diff --git a/.gitignore b/.gitignore
index 070faf2c8..5549e4d86 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,5 @@ packages/viewer/dist
 coverage/
 .vscode
 test-queries
+
+**/.DS_Store
diff --git a/packages/viewer/dist/Speckle.js.map b/packages/viewer/dist/Speckle.js.map
new file mode 100644
index 000000000..6c56446d6
--- /dev/null
+++ b/packages/viewer/dist/Speckle.js.map
@@ -0,0 +1 @@
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webpackUniversalModuleDefinition(root, factory) {\n\tif(typeof exports === 'object' && typeof module === 'object')\n\t\tmodule.exports = factory();\n\telse if(typeof define === 'function' && define.amd)\n\t\tdefine([], factory);\n\telse if(typeof exports === 'object')\n\t\texports[\"Speckle\"] = factory();\n\telse\n\t\troot[\"Speckle\"] = factory();\n})(this, function() {\nreturn ","import Viewer from './modules/Viewer'\nimport ObjectLoader from './modules/ObjectLoader'\nimport Converter from './modules/Converter'\n\nexport { Viewer, ObjectLoader, Converter }\n","import * as THREE from 'three'\nimport ObjectWrapper from './ObjectWrapper'\nimport { getConversionFactor } from './Units'\n\n/**\n * Utility class providing some top level conversion methods.\n */\nexport default class Coverter {\n\n  constructor( objectLoader ) {\n    if ( !objectLoader ) {\n      console.warn( 'Converter initialized without a corresponding object loader. Any objects that include references will throw errors.' )\n    }\n\n    this.objectLoader = objectLoader\n  }\n\n  /**\n   * If the object is convertable (there is a direct conversion routine), it will invoke the callback with the conversion result.\n   * If the object is not convertable, it will recursively iterate through it (arrays & objects) and invoke the callback on any postive conversion result.\n   * @param  {[type]}   obj      [description]\n   * @param  {Function} callback [description]\n   * @return {[type]}            [description]\n   */\n  async traverseAndConvert( obj, callback ) {\n    // Exit on primitives (string, ints, bools, bigints, etc.)\n    if ( typeof obj !== 'object' ) return\n\n    if ( obj.referencedId ) obj = await this.resolveReference( obj )\n\n    // Traverse arrays, and exit early (we don't want to iterate through many numbers)\n    if ( Array.isArray( obj ) ) {\n      for ( let element of obj ) {\n        if ( typeof element !== 'object' ) return // exit early for non-object based arrays\n        ( async() => await this.traverseAndConvert( element, callback ) )() //iife so we don't block\n      }\n    }\n\n    // If we can convert it, we should invoke the respective conversion routine.\n    const type = this.getSpeckleType( obj )\n    if ( this[`${type}ToBufferGeometry`] ) {\n      try {\n        console.log( 'conversion failed', type, obj )\n        callback( await this[`${type}ToBufferGeometry`]( obj.data || obj ) )\n        return\n      } catch ( e ) {\n        console.warn( `(Traversing - direct) Failed to convert ${type} with id: ${obj.id}` )\n      }\n    }\n\n    let target = obj.data || obj\n\n    // Check if the object has a display value of sorts\n    let displayValue = target['displayMesh'] || target['@displayMesh'] || target['displayValue']|| target['@displayValue']\n    if ( displayValue ) {\n      displayValue = await this.resolveReference( displayValue )\n      if ( !displayValue.units ) displayValue.units = obj.units\n\n      try {\n        let { bufferGeometry } = await this.convert( displayValue )\n        callback( new ObjectWrapper( bufferGeometry, obj ) ) // use the parent's metadata!\n\n        // return // returning here is faster but excludes objects that have a display value and displayable children (ie, a wall with windows)\n      } catch ( e ) {\n        console.warn( `(Traversing) Failed to convert obj with id: ${obj.id}` )\n      }\n    }\n\n    // Last attempt: iterate through all object keys and see if we can display anything!\n    // traverses the object in case there's any sub-objects we can convert.\n    for ( let prop in target ) {\n      if ( typeof target[prop] !== 'object' ) continue\n      ( async() => await this.traverseAndConvert( target[prop], callback ) )() //iife so we don't block\n    }\n  }\n\n  /**\n   * Directly converts an object and invokes the callback with the the conversion result.\n   * @param  {[type]} obj [description]\n   * @param  {Function} callback [description]\n   * @return {[type]}     [description]\n   */\n  async convert( obj ) {\n    if ( obj.referencedId ) obj = await this.resolveReference( obj )\n    try {\n      let type = this.getSpeckleType( obj )\n      if ( this[`${type}ToBufferGeometry`] ) {\n        return await this[`${type}ToBufferGeometry`]( obj.data || obj )\n      }\n      else return null\n    } catch ( e ) {\n      console.warn( `(Direct convert) Failed to convert object with id: ${obj.id}` )\n      throw e\n    }\n  }\n\n  /**\n   * Takes an array composed of chunked references and dechunks it.\n   * @param  {[type]} arr [description]\n   * @return {[type]}     [description]\n   */\n  async dechunk( arr ) {\n    if ( !arr ) return arr\n    // Handles pre-chunking objects, or arrs that have not been chunked\n    if ( !arr[0].referencedId ) return arr\n\n    let dechunked = []\n    for ( let ref of arr ) {\n      let real = await this.objectLoader.getObject( ref.referencedId )\n      dechunked.push( ...real.data )\n    }\n    return dechunked\n  }\n\n  /**\n   * Resolves an object reference by waiting for the loader to load it up.\n   * @param  {[type]} obj [description]\n   * @return {[type]}     [description]\n   */\n  async resolveReference( obj ) {\n    if ( obj.referencedId )\n      return await this.objectLoader.getObject( obj.referencedId )\n    else return obj\n  }\n\n  /**\n   * Gets the speckle type of an object in various scenarios.\n   * @param  {[type]} obj [description]\n   * @return {[type]}     [description]\n   */\n  getSpeckleType( obj ) {\n    let type = 'Base'\n    if ( obj.data )\n      type = obj.data.speckle_type ? obj.data.speckle_type.split( '.' ).reverse()[0] : type\n    else\n      type = obj.speckle_type ? obj.speckle_type.split( '.' ).reverse()[0] : type\n    return type\n  }\n\n  async BrepToBufferGeometry( obj ) {\n    try {\n      if ( !obj ) return\n      let { bufferGeometry } = await this.MeshToBufferGeometry( await this.resolveReference( obj.displayValue || obj.displayMesh ) )\n\n      // deletes known uneeded fields\n      delete obj.displayMesh\n      delete obj.displayValue\n      delete obj.Edges\n      delete obj.Faces\n      delete obj.Loops\n      delete obj.Trims\n      delete obj.Curve2D\n      delete obj.Curve3D\n      delete obj.Surfaces\n      delete obj.Vertices\n\n      return new ObjectWrapper( bufferGeometry, obj )\n    } catch ( e ) {\n      console.warn( `Failed to convert brep id: ${obj.id}` )\n      throw e\n    }\n  }\n\n  async MeshToBufferGeometry( obj ) {\n    try {\n      if ( !obj ) return\n\n      let conversionFactor = getConversionFactor( obj.units )\n      // console.log( conversionFactor )\n      let buffer = new THREE.BufferGeometry( )\n      let indices = [ ]\n\n      let vertices = await this.dechunk( obj.vertices )\n      console.log( 'Vertices', vertices )\n      let faces = await this.dechunk( obj.faces )\n\n      let k = 0\n      while ( k < faces.length ) {\n        if ( faces[ k ] === 1 ) { // QUAD FACE\n          indices.push( faces[ k + 1 ], faces[ k + 2 ], faces[ k + 3 ] )\n          indices.push( faces[ k + 1 ], faces[ k + 3 ], faces[ k + 4 ] )\n          k += 5\n        } else if ( faces[ k ] === 0 ) { // TRIANGLE FACE\n          indices.push( faces[ k + 1 ], faces[ k + 2 ], faces[ k + 3 ] )\n          k += 4\n        } else throw new Error( `Mesh type not supported. Face topology indicator: ${faces[k]}` )\n      }\n      buffer.setIndex( indices )\n\n      buffer.setAttribute(\n        'position',\n        new THREE.Float32BufferAttribute( conversionFactor === 1 ? vertices : vertices.map( v => v * conversionFactor ), 3 ) )\n\n      buffer.computeVertexNormals( )\n      buffer.computeFaceNormals( )\n      buffer.computeBoundingSphere( )\n\n      delete obj.vertices\n      delete obj.faces\n\n      return new ObjectWrapper( buffer, obj )\n    } catch ( e ) {\n      console.warn( `Failed to convert mesh with id: ${obj.id}` )\n      throw e\n    }\n  }\n\n  // TODOs:\n  async PointToBufferGeometry( obj ) {\n    console.log( 'Point to buffer', obj )\n  }\n\n  // async LineToBufferGeometry( obj ) {}\n  // async PolylineToBufferGeometry( obj ) {}\n  // async PolycurveToBufferGeometry( obj ) {}\n  // async CurveToBufferGeometry( obj ) {}\n  // async CircleToBufferGeometry( obj ) {}\n  // async ArcToBufferGeometry( obj ) {}\n  // async EllipseToBufferGeometry( obj ) {}\n  // async SurfaceToBufferGeometry( obj ) {}\n}\n","\nexport default class EventEmitter {\n  constructor() {\n    this._events = {}\n  }\n\n  on( name, listener ) {\n    if ( !this._events[name] ) {\n      this._events[name] = []\n    }\n\n    this._events[name].push( listener )\n  }\n\n  removeListener( name, listenerToRemove ) {\n    if ( !this._events[name] ) return\n\n    const filterListeners = ( listener ) => listener !== listenerToRemove\n\n    this._events[name] = this._events[name].filter( filterListeners )\n  }\n\n  emit( name, data ) {\n    if ( !this._events[name] ) return\n\n    const fireCallbacks = ( callback ) => {\n      callback( data )\n    }\n\n    this._events[name].forEach( fireCallbacks )\n  }\n}\n","/**\n * Simple client that streams object info from a Speckle Server.\n * TODO: This should be split from the viewer into its own package.\n */\nexport default class ObjectLoader {\n\n  constructor( { serverUrl, streamId, token, objectId } ) {\n    this.INTERVAL_MS = 20\n    this.TIMEOUT_MS = 180000 // three mins\n\n    this.serverUrl = serverUrl || window.location.origin\n    this.streamId = streamId\n    this.objectId = objectId\n    this.token = token || localStorage.getItem( 'AuthToken' )\n    this.headers = {\n      'Authorization': `Bearer ${this.token}`,\n      'Accept': 'text/plain'\n    }\n    this.requestUrl = `${this.serverUrl}/objects/${this.streamId}/${this.objectId}`\n    this.promises = []\n    this.intervals = {}\n    this.buffer = []\n  }\n\n  dispose() {\n    this.buffer = []\n    this.intervals.forEach( i => clearInterval( i.interval ) )\n  }\n\n  async getObject( id ){\n    if ( this.buffer[id] ) return this.buffer[id]\n\n    let promise = new Promise( ( resolve, reject ) => {\n      this.promises.push( { id, resolve, reject } )\n      // Only create a new interval checker if none is already present!\n      if ( this.intervals[id] ) {\n        this.intervals[id].elapsed = 0 // reset elapsed\n      } else {\n        let intervalId = setInterval( this.tryResolvePromise.bind( this ), this.INTERVAL_MS, id )\n        this.intervals[id] = { interval: intervalId, elapsed: 0 }\n      }\n    } )\n    return promise\n  }\n\n  tryResolvePromise( id ) {\n    this.intervals[id].elapsed += this.INTERVAL_MS\n    if ( this.buffer[id] ) {\n      for ( let p of this.promises.filter( p => p.id === id ) ) {\n        p.resolve( this.buffer[id] )\n      }\n\n      clearInterval( this.intervals[id].interval )\n      delete this.intervals[id]\n      // this.promises = this.promises.filter( p => p.id !== p.id ) // clearing out promises too early seems to nuke loading\n      return\n    }\n\n    if ( this.intervals[id].elapsed > this.TIMEOUT_MS ) {\n      console.warn( `Timeout resolving ${id}. HIC SVNT DRACONES.` )\n      clearInterval( this.intervals[id].interval )\n      this.promises.filter( p => p.id === id ).forEach( p => p.reject() )\n      this.promises = this.promises.filter( p => p.id !== p.id ) // clear out\n    }\n  }\n\n  async * getObjectIterator(  ) {\n    for await ( let line of this.getRawObjectIterator() ) {\n      let { id, obj } = this.processLine( line )\n      this.buffer[ id ] = obj\n      yield obj\n    }\n  }\n\n  processLine( chunk ) {\n    var pieces = chunk.split( '\\t' )\n    return { id: pieces[0], obj: JSON.parse( pieces[1] ) }\n  }\n\n  async * getRawObjectIterator() {\n    const decoder = new TextDecoder()\n    const response = await fetch( this.requestUrl, { headers: this.headers } )\n    const reader = response.body.getReader()\n    let { value: chunk, done: readerDone } = await reader.read()\n    chunk = chunk ? decoder.decode( chunk ) : ''\n\n    let re = /\\r\\n|\\n|\\r/gm\n    let startIndex = 0\n\n    while ( true ) {\n      let result = re.exec( chunk )\n      if ( !result ) {\n        if ( readerDone ) break\n        let remainder = chunk.substr( startIndex );\n        ( { value: chunk, done: readerDone } = await reader.read() )\n        chunk = remainder + ( chunk ? decoder.decode( chunk ) : '' )\n        startIndex = re.lastIndex = 0\n        continue\n      }\n      yield chunk.substring( startIndex, result.index )\n      startIndex = re.lastIndex\n    }\n\n    if ( startIndex < chunk.length ) {\n      yield chunk.substr( startIndex )\n    }\n  }\n}\n","/**\n * Class that wraps around a buffer geometry and any remaining speckle object\n * metadata. Used to match the two in the renderer.\n */\nexport default class ObjectWrapper {\n  constructor( bufferGeometry, meta, geometryType ) {\n    this.bufferGeometry = bufferGeometry\n    this.meta = meta\n    this.geometryType = geometryType || 'solid'\n  }\n}\n","import * as THREE from 'three'\nimport debounce from 'lodash.debounce'\n\n\n/**\n * Manages objects and provides some convenience methods to focus on the entire scene, or one specific object.\n */\nexport default class SceneObjectManager {\n\n  constructor( viewer ) {\n    this.viewer = viewer\n    this.scene = viewer.scene\n    this.userObjects = new THREE.Group()\n    this.solidObjects = new THREE.Group()\n    this.transparentObjects = new THREE.Group()\n\n    this.userObjects.add( this.solidObjects )\n    this.userObjects.add( this.transparentObjects )\n    this.scene.add( this.userObjects )\n\n    this.solidMaterial = new THREE.MeshStandardMaterial( {\n      color: 0x8D9194,\n      emissive: 0x0,\n      roughness: 1,\n      metalness: 0,\n      side: THREE.DoubleSide,\n      envMap: this.viewer.cubeCamera.renderTarget.texture\n    } )\n\n    this.transparentMaterial = new THREE.MeshStandardMaterial( {\n      color: 0xA0A4A8,\n      emissive: 0x0,\n      roughness: 0,\n      metalness: 0.5,\n      side: THREE.DoubleSide,\n      transparent: true,\n      opacity: 0.4,\n      envMap: this.viewer.cubeCamera.renderTarget.texture\n    } )\n\n\n    this.objectIds = []\n    this.postLoad = debounce( () => { this._postLoadFunction() }, 200 )\n\n    this.loaders = []\n  }\n\n  get objects() {\n    return [ ...this.solidObjects.children, ...this.transparentObjects.children ]\n  }\n\n  // Note: we might switch later down the line from cloning materials to solely\n  // using a few \"default\" ones and controlling color through vertex colors.\n  // For now a small compromise to speed up dev; it is not the most memory\n  // efficient approach.\n  // To support big models we might need to merge everything in buffer geometries,\n  // and control things separately to squeeze those sweet FPS (esp mobile); but\n  // this conflicts a bit with the interactivity requirements of the viewer, esp.\n  // the TODO ones (colour by property).\n  addObject( wrapper ) {\n    if ( !wrapper || !wrapper.bufferGeometry ) return\n\n\n    switch ( wrapper.geometryType ) {\n    case 'solid':\n      // Do we have a defined material?\n      if ( wrapper.meta.renderMaterial ) {\n\n        let renderMat = wrapper.meta.renderMaterial\n        let color = new THREE.Color( this._argbToRGB( renderMat.diffuse ) )\n        this._normaliseColor( color )\n        // Is it a transparent material?\n        if ( renderMat.opacity !== 1 ) {\n          let material = this.transparentMaterial.clone()\n          material.clippingPlanes = this.viewer.sectionPlaneHelper.planes\n          material.color = color\n          material.opacity = renderMat.opacity !== 0 ? renderMat.opacity : 0.2\n          this.addTransparentSolid( wrapper, material )\n\n        // It's not a transparent material!\n        } else {\n          let material = this.solidMaterial.clone()\n          material.clippingPlanes = this.viewer.sectionPlaneHelper.planes\n          material.color = color\n          material.metalness = renderMat.metalness\n          if ( material.metalness !== 0 ) material.roughness = 0.1\n          if ( material.metalness > 0.8 ) material.color = new THREE.Color( '#CDCDCD' ) // hack for rhino metal materials being black FFS\n          this.addSolid( wrapper, material )\n        }\n      } else {\n        // If we don't have defined material, just use the default\n        let material = this.solidMaterial.clone()\n        material.clippingPlanes = this.viewer.sectionPlaneHelper.planes\n        this.addSolid( wrapper, material )\n      }\n      break\n    case 'line':\n      this.addLine( wrapper )\n      break\n    case 'point':\n      this.addPoint( wrapper )\n      break\n    }\n\n    this.postLoad()\n  }\n\n  addSolid( wrapper, material ) {\n    const mesh = new THREE.Mesh( wrapper.bufferGeometry, material ? material : this.solidMaterial )\n    mesh.userData = wrapper.meta\n    mesh.uuid = wrapper.meta.id\n    this.objectIds.push( mesh.uuid )\n    this.solidObjects.add( mesh )\n  }\n\n  addTransparentSolid( wrapper, material ) {\n    const mesh = new THREE.Mesh( wrapper.bufferGeometry, material ? material : this.transparentMaterial )\n    mesh.userData = wrapper.meta\n    mesh.uuid = wrapper.meta.id\n    this.objectIds.push( mesh.uuid )\n    this.transparentObjects.add( mesh )\n  }\n\n  addLine( wrapper ) {\n    // TODO\n  }\n\n  addPoint( wrapper ){\n    // TODO\n  }\n\n  removeObject( id ) {\n    // TODO\n  }\n\n  removeAllObjects() {\n    for ( let obj of this.objects ) {\n      if ( obj.geometry ){\n        obj.geometry.dispose()\n      }\n    }\n    this.solidObjects.clear()\n    this.transparentObjects.clear()\n    this.viewer.selectionHelper.unselect()\n    this.objectIds = []\n\n    this._postLoadFunction()\n  }\n\n  _postLoadFunction() {\n    this.zoomExtents()\n    this.viewer.reflectionsNeedUpdate = true\n    this.viewer.sectionPlaneHelper._matchSceneSize()\n  }\n\n  zoomToObject( target ) {\n    const box = new THREE.Box3().setFromObject( target )\n    this.zoomToBox( box )\n  }\n\n  zoomExtents() {\n    let bboxTarget = this.userObjects\n    if ( this.objects.length === 0 )  {\n      let box = new THREE.Box3( new THREE.Vector3( -1,-1,-1 ), new THREE.Vector3( 1,1,1 ) )\n      this.zoomToBox( box )\n      return\n    }\n    let box = new THREE.Box3().setFromObject( bboxTarget )\n    this.zoomToBox( box )\n  }\n\n  // see this discussion: https://github.com/mrdoob/three.js/pull/14526#issuecomment-497254491\n  // Notes: seems that zooming in to a box 'rescales' the SSAO pass somehow and makes it\n  // look better. Could we do the same thing somehow when controls stop moving?\n  zoomToBox( box ) {\n    const fitOffset = 1.2\n\n    const size = box.getSize( new THREE.Vector3() )\n    const center = box.getCenter( new THREE.Vector3() )\n\n    const maxSize = Math.max( size.x, size.y, size.z )\n    const fitHeightDistance = maxSize / ( 2 * Math.atan( Math.PI * this.viewer.camera.fov / 360 ) )\n    const fitWidthDistance = fitHeightDistance / this.viewer.camera.aspect\n    const distance = fitOffset * Math.max( fitHeightDistance, fitWidthDistance )\n\n    const direction = this.viewer.controls.target.clone()\n      .sub( this.viewer.camera.position )\n      .normalize()\n      .multiplyScalar( distance )\n\n    // this.viewer.controls.maxDistance = distance * 20\n    this.viewer.controls.target.copy( center )\n\n    this.viewer.camera.near = distance / 100\n    this.viewer.camera.far = distance * 100\n    this.viewer.camera.updateProjectionMatrix()\n\n    this.viewer.camera.position.copy( this.viewer.controls.target ).sub( direction )\n\n    this.viewer.controls.update()\n  }\n\n  _argbToRGB( argb ) {\n    return '#'+ ( '000000' + ( argb & 0xFFFFFF ).toString( 16 ) ).slice( -6 )\n  }\n\n  _normaliseColor( color ) {\n    // Note: full of **magic numbers** that will need changing once global scene\n    // is properly set up; also to test with materials coming from other software too...\n    let hsl = {}\n    color.getHSL( hsl )\n\n    if ( hsl.s + hsl.l > 1 ) {\n      while ( hsl.s + hsl.l > 1 ){\n        hsl.s -= 0.05\n        hsl.l -= 0.05\n      }\n    }\n\n    if ( hsl.l > 0.6 ) {\n      hsl.l = 0.6\n    }\n\n    if ( hsl.l < 0.3 ) {\n      hsl.l = 0.3\n    }\n\n    color.setHSL( hsl.h, hsl.s, hsl.l )\n  }\n\n}\n","import * as THREE from 'three'\nimport { TransformControls } from 'three/examples/jsm/controls/TransformControls.js'\n\n/**\n * WIP: A utility class for adding section planes to the scene.\n * - 'S' shows/hides section planes\n * - 's' toggles controls from translate to rotate\n */\nexport default class SectionPlaneHelper {\n\n  constructor( parent ) {\n    this.viewer = parent\n    this.cutters = []\n    this.visible = false\n\n    window.addEventListener( 'keydown', ( event ) => {\n      if ( event.key === 's' ) {\n        this.toggleTransformControls()\n      }\n      if ( event.key === 'S' ) {\n        this.toggleSectionPlanes()\n      }\n    }, false )\n  }\n\n  get planes() {\n    return this.cutters.map( cutter => cutter.plane )\n  }\n\n  get activePlanes() {\n    return this.cutters.filter( cutter => cutter.visible ).map( cutter => cutter.plane )\n  }\n\n  toggleTransformControls() {\n    this.cutters.forEach( cutter => {\n      if ( cutter.control.mode === 'rotate' ) {\n        cutter.control.setMode( 'translate' )\n        cutter.control.showX = false\n        cutter.control.showY = false\n        cutter.control.showZ = true\n        return\n      }\n      cutter.control.setMode( 'rotate' )\n      cutter.control.showX = true\n      cutter.control.showY = true\n      cutter.control.showZ = false\n    } )\n  }\n\n  createSectionPlane() {\n    let cutter = { }\n\n    cutter.id = this.cutters.length\n    cutter.visible = false\n    cutter.plane = new THREE.Plane( new THREE.Vector3( 0, 0, -1 ), 1 )\n\n    cutter.helper = new THREE.Mesh( new THREE.PlaneGeometry( 1, 1, 1 ), new THREE.MeshBasicMaterial( { color: 0xAFAFAF, transparent: true, opacity: 0.1, side: THREE.DoubleSide } ) )\n    cutter.helper.visible = false\n    this.viewer.scene.add( cutter.helper )\n\n    cutter.control = new TransformControls( this.viewer.camera, this.viewer.renderer.domElement )\n    cutter.control.setSize( 0.5 )\n    cutter.control.space = 'local'\n    cutter.control.showX = false\n    cutter.control.showY = false\n    cutter.control.setRotationSnap( THREE.MathUtils.degToRad( 15 ) )\n\n    cutter.control.addEventListener( 'change', () => this.viewer.render )\n    cutter.control.addEventListener( 'dragging-changed', ( event ) => {\n      if ( !cutter.visible ) return\n      this.viewer.controls.enabled = !event.value\n\n      // Reference: https://stackoverflow.com/a/52124409\n      let normal = new THREE.Vector3()\n      let point = new THREE.Vector3()\n      normal.set( 0, 0, -1 ).applyQuaternion( cutter.helper.quaternion )\n      point.copy( cutter.helper.position )\n      cutter.plane.setFromNormalAndCoplanarPoint( normal, point )\n    } )\n\n    cutter.control.attach( cutter.helper )\n    cutter.control.visible = false\n    this.viewer.scene.add( cutter.control )\n\n    this.cutters.push( cutter )\n\n    // adds local clipping planes to all materials\n    let objs = this.viewer.sceneManager.objects\n    objs.forEach( obj => {\n      obj.material.clippingPlanes = this.cutters.map( c => c.plane )\n    } )\n  }\n\n  toggleSectionPlanes() {\n    if ( this.visible ) this.hideSectionPlanes()\n    else this.showSectionPlanes()\n\n    this.visible = !this.visible\n  }\n\n  showSectionPlanes() {\n    this._matchSceneSize()\n\n    this.cutters.forEach( cutter => {\n      cutter.visible = true\n      cutter.helper.visible = true\n      cutter.control.visible = true\n    } )\n\n    this.viewer.renderer.localClippingEnabled = true\n  }\n\n  hideSectionPlanes() {\n    this.cutters.forEach( cutter => {\n      cutter.visible = false\n      cutter.helper.visible = false\n      cutter.control.visible = false\n    } )\n    this.viewer.renderer.localClippingEnabled = false\n  }\n\n  _matchSceneSize() {\n    // Scales and translate helper to scene bbox center and origin\n    const sceneBox = new THREE.Box3().setFromObject( this.viewer.sceneManager.userObjects )\n    const sceneSize = new THREE.Vector3()\n    sceneBox.getSize( sceneSize )\n    const sceneCenter = new THREE.Vector3()\n    sceneBox.getCenter( sceneCenter )\n\n    this.cutters.forEach( cutter => {\n      cutter.helper.scale.set( sceneSize.x > 0 ? sceneSize.x : 1, sceneSize.y > 0 ? sceneSize.y : 1, sceneSize.z >0 ? sceneSize.z : 1 )\n      cutter.helper.position.set( sceneCenter.x, sceneCenter.y, sceneCenter.z )\n\n      let normal = new THREE.Vector3()\n      let point = new THREE.Vector3()\n      normal.set( 0, 0, -1 ).applyQuaternion( cutter.helper.quaternion )\n      point.copy( cutter.helper.position )\n      cutter.plane.setFromNormalAndCoplanarPoint( normal, point )\n    } )\n\n  }\n\n}\n","import * as THREE from 'three'\nimport debounce from 'lodash.debounce'\nimport EventEmitter from './EventEmitter'\n\n/**\n * Selects and deselects user added objects in the scene. Emits the array of all intersected objects on click.\n * Behaviours:\n * - Clicking on one object will select it.\n * - Double clicking on one object will focus on it.\n * - Double clicking anywhere else will focus the scene.\n * - Pressing escape will clear any selection present.\n * TODOs:\n * - Ensure clipped geometry is not selected.\n * - When objects are disposed, ensure selection is reset.\n */\nexport default class SelectionHelper extends EventEmitter {\n\n  constructor( parent ) {\n    super()\n    this.viewer = parent\n    this.raycaster = new THREE.Raycaster()\n\n    // Handle clicks during camera moves\n    this.orbiting = false\n    this.viewer.controls.addEventListener( 'change', debounce( () => { this.orbiting = false }, 100 ) )\n    this.viewer.controls.addEventListener( 'start', debounce( () => { this.orbiting = true }, 200 )  )\n    this.viewer.controls.addEventListener( 'end', debounce( () => { this.orbiting = false }, 200 )  )\n\n    // Handle mouseclicks\n    this.viewer.renderer.domElement.addEventListener( 'pointerup', ( e ) => {\n      if ( this.orbiting ) return\n\n      let selectionObjects = this.getClickedObjects( e )\n      this.handleSelection( selectionObjects )\n    } )\n\n    // Doubleclicks on touch devices\n    // http://jsfiddle.net/brettwp/J4djY/\n    this.tapTimeout\n    this.lastTap = 0\n    this.touchLocation\n    this.viewer.renderer.domElement.addEventListener( 'touchstart', ( e ) => { this.touchLocation = e.targetTouches[0] } )\n    this.viewer.renderer.domElement.addEventListener( 'touchend', ( event ) => {\n      var currentTime = new Date().getTime()\n      var tapLength = currentTime - this.lastTap\n      clearTimeout( this.tapTimeout )\n      if ( tapLength < 500 && tapLength > 0 ) {\n        let selectionObjects = this.getClickedObjects( this.touchLocation )\n        this.emit( 'object-doubleclicked', selectionObjects )\n        if ( !this.orbiting )\n          this.handleDoubleClick( selectionObjects )\n        event.preventDefault()\n      } else {\n        this.tapTimeout = setTimeout( function() {\n          clearTimeout( this.tapTimeout )\n        }, 500 )\n      }\n      this.lastTap = currentTime\n    } )\n\n    this.viewer.renderer.domElement.addEventListener( 'dblclick', ( e ) => {\n      // if ( this.orbiting ) return // not needed for zoom to thing?\n\n      let selectionObjects = this.getClickedObjects( e )\n\n      this.emit( 'object-doubleclicked', selectionObjects )\n      this.handleDoubleClick( selectionObjects )\n    } )\n\n    // Handle multiple object selection\n    this.multiSelect = false\n    document.addEventListener( 'keydown', ( e ) => {\n      if ( e.isComposing || e.keyCode === 229 ) return\n      if ( e.key === 'Shift' ) this.multiSelect = true\n      if ( e.key === 'Escape' ) this.unselect( )\n    } )\n    document.addEventListener( 'keyup', ( e ) => {\n      if ( e.isComposing || e.keyCode === 229 ) return\n      if ( e.key === 'Shift' ) this.multiSelect = false\n    } )\n\n    this.selectionMaterial = new THREE.MeshLambertMaterial( { color: 0x0B55D2, emissive: 0x0B55D2, side: THREE.DoubleSide } )\n    this.selectedObjects = new THREE.Group()\n    this.selectedObjects.renderOrder = 1000\n    this.viewer.scene.add( this.selectedObjects )\n\n    this.originalSelectionObjects = []\n  }\n\n  handleSelection( objects ) {\n    this.select( objects[0] )\n  }\n\n  handleDoubleClick( objects ) {\n    if ( !objects || objects.length === 0 ) this.viewer.sceneManager.zoomExtents()\n    else this.viewer.sceneManager.zoomToObject( objects[0].object )\n  }\n\n  select( obj ) {\n    if ( !this.multiSelect ) this.unselect()\n    if ( !obj ) {\n      this.emit( 'object-clicked', this.originalSelectionObjects )\n      return\n    }\n\n    let mesh = new THREE.Mesh( obj.object.geometry, this.selectionMaterial )\n    this.selectedObjects.add( mesh )\n    this.originalSelectionObjects.push( obj )\n    this.emit( 'object-clicked', this.originalSelectionObjects )\n  }\n\n  unselect() {\n    this.selectedObjects.clear()\n    this.originalSelectionObjects = []\n  }\n\n  getClickedObjects( e ) {\n    const normalizedPosition = this._getNormalisedClickPosition( e )\n    this.raycaster.setFromCamera( normalizedPosition, this.viewer.camera )\n\n    let intersectedObjects = this.raycaster.intersectObjects( this.viewer.sceneManager.objects )\n    intersectedObjects = intersectedObjects.filter( obj => this.viewer.sectionPlaneHelper.activePlanes.every( pl => pl.distanceToPoint( obj.point ) > 0 ) )\n\n    return intersectedObjects\n  }\n\n  _getNormalisedClickPosition( e ) {\n    // Reference: https://threejsfundamentals.org/threejs/lessons/threejs-picking.html\n    const canvas = this.viewer.renderer.domElement\n    const rect = this.viewer.renderer.domElement.getBoundingClientRect()\n\n    const pos = {\n      x: ( e.clientX - rect.left ) * canvas.width / rect.width,\n      y: ( e.clientY - rect.top ) * canvas.height / rect.height\n    }\n    return {\n      x: ( pos.x / canvas.width ) *  2 - 1,\n      y: ( pos.y / canvas.height ) * -2 + 1\n    }\n  }\n\n  dispose() {\n    this.viewer.scene.remove( this.selectedObjects )\n    this.unselect()\n    this.originalSelectionObjects = null\n    this.selectionMaterial = null\n    this.selectedObjects = null\n  }\n\n}\n","export const Units = {\n  Millimeters: 'mm',\n  Centimeters: 'cm',\n  Meters: 'm',\n  Kilometers: 'km',\n  Inches: 'in',\n  Feet: 'ft',\n  Yards: 'yd',\n  Miles: 'mi'\n}\n\nexport function getConversionFactor( from, to = Units.Meters ){\n  from = normaliseName( from )\n  to = normaliseName( to )\n  switch ( from )\n  {\n  // METRIC\n  case Units.Millimeters:\n    switch ( to )\n    {\n    case Units.Centimeters: return 0.1\n    case Units.Meters: return 0.001\n    case Units.Kilometers: return 1e-6\n    case Units.Inches: return 0.0393701\n    case Units.Feet: return 0.00328084\n    case Units.Yards: return 0.00109361\n    case Units.Miles: return 6.21371e-7\n    }\n    break\n  case Units.Centimeters:\n    switch ( to )\n    {\n    case Units.Millimeters: return 10\n    case Units.Meters: return 0.01\n    case Units.Kilometers: return 1e-5\n    case Units.Inches: return 0.393701\n    case Units.Feet: return 0.0328084\n    case Units.Yards: return 0.0109361\n    case Units.Miles: return 6.21371e-6\n    }\n    break\n  case Units.Meters:\n    switch ( to )\n    {\n    case Units.Millimeters: return 1000\n    case Units.Centimeters: return 100\n    case Units.Kilometers: return 1000\n    case Units.Inches: return 39.3701\n    case Units.Feet: return 3.28084\n    case Units.Yards: return 1.09361\n    case Units.Miles: return 0.000621371\n    }\n    break\n  case Units.Kilometers:\n    switch ( to )\n    {\n    case Units.Millimeters: return 1000000\n    case Units.Centimeters: return 100000\n    case Units.Meters: return 1000\n    case Units.Inches: return 39370.1\n    case Units.Feet: return 3280.84\n    case Units.Yards: return 1093.61\n    case Units.Miles: return 0.621371\n    }\n    break\n\n    // IMPERIAL\n  case Units.Inches:\n    switch ( to )\n    {\n    case Units.Millimeters: return 25.4\n    case Units.Centimeters: return 2.54\n    case Units.Meters: return 0.0254\n    case Units.Kilometers: return 2.54e-5\n    case Units.Feet: return 0.0833333\n    case Units.Yards: return 0.027777694\n    case Units.Miles: return 1.57828e-5\n    }\n    break\n  case Units.Feet:\n    switch ( to )\n    {\n    case Units.Millimeters: return 304.8\n    case Units.Centimeters: return 30.48\n    case Units.Meters: return 0.3048\n    case Units.Kilometers: return 0.0003048\n    case Units.Inches: return 12\n    case Units.Yards: return 0.333332328\n    case Units.Miles: return 0.000189394\n    }\n    break\n  case Units.Miles:\n    switch ( to )\n    {\n    case Units.Millimeters: return 1.609e+6\n    case Units.Centimeters: return 160934\n    case Units.Meters: return 1609.34\n    case Units.Kilometers: return 1.60934\n    case Units.Inches: return 63360\n    case Units.Feet: return 5280\n    case Units.Yards: return 1759.99469184\n    }\n    break\n  }\n  return 1\n}\n\nexport function normaliseName( unit ) {\n  if ( !unit ) return Units.Meters\n  switch ( unit.toLowerCase() )\n  {\n  case 'mm':\n  case 'mil':\n  case 'millimeters':\n  case 'millimetres':\n    return Units.Millimeters\n  case 'cm':\n  case 'centimetre':\n  case 'centimeter':\n  case 'centimetres':\n  case 'centimeters':\n    return Units.Centimeters\n  case 'm':\n  case 'meter':\n  case 'metre':\n  case 'meters':\n  case 'metres':\n    return Units.Meters\n  case 'inches':\n  case 'inch':\n  case 'in':\n    return Units.Inches\n  case 'feet':\n  case 'foot':\n  case 'ft':\n    return Units.Feet\n  case 'yard':\n  case 'yards':\n  case 'yd':\n    return Units.Yards\n  case 'miles':\n  case 'mile':\n  case 'mi':\n    return Units.Miles\n  default:\n    return Units.Meters\n  }\n}\n","import * as THREE from 'three'\nimport { OrbitControls } from 'three/examples/jsm/controls/OrbitControls.js'\nimport { EffectComposer } from 'three/examples/jsm/postprocessing/EffectComposer.js'\nimport { SSAOPass } from 'three/examples/jsm/postprocessing/SSAOPass.js'\nimport Stats from 'three/examples/jsm/libs/stats.module.js'\n\nimport ObjectManager from './SceneObjectManager'\nimport SelectionHelper from './SelectionHelper'\nimport SectionPlaneHelper from './SectionPlaneHelper'\nimport ViewerObjectLoader from './ViewerObjectLoader'\nimport EventEmitter from './EventEmitter'\n\nexport default class Viewer extends EventEmitter {\n\n  constructor( { container, postprocessing = true, reflections = true } ) {\n    super()\n    this.container = container || document.getElementById( 'renderer' )\n    this.postprocessing = postprocessing\n    this.scene = new THREE.Scene()\n\n    this.camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight )\n    this.camera.up.set( 0, 0, 1 )\n    this.camera.position.set( 1, 1, 1 )\n\n    this.renderer = new THREE.WebGLRenderer( { antialias: true, alpha: true } )\n    this.renderer.setClearColor( 0xcccccc, 0 )\n    this.renderer.setPixelRatio( window.devicePixelRatio )\n    this.renderer.setSize( this.container.offsetWidth, this.container.offsetHeight )\n    this.container.appendChild( this.renderer.domElement )\n\n    // commented out because the ssao flash is annoying\n    // this.renderer.gammaFactor = 2.2\n    // this.renderer.outputEncoding = THREE.sRGBEncoding\n\n    this.reflections = reflections\n    this.reflectionsNeedUpdate = true\n    const cubeRenderTarget = new THREE.WebGLCubeRenderTarget( 512, { format: THREE.RGBFormat, generateMipmaps: true, minFilter: THREE.LinearMipmapLinearFilter } )\n    this.cubeCamera = new THREE.CubeCamera( 0.1, 10_000, cubeRenderTarget )\n    this.scene.add( this.cubeCamera )\n\n    this.controls = new OrbitControls( this.camera, this.renderer.domElement )\n    this.controls.enableDamping = true\n    this.controls.dampingFactor = 0.1\n    this.controls.screenSpacePanning = true\n    this.controls.maxPolarAngle = Math.PI / 2\n    this.controls.panSpeed = 0.8\n    this.controls.rotateSpeed = 0.8\n\n    this.composer = new EffectComposer( this.renderer )\n\n    this.ssaoPass = new SSAOPass( this.scene, this.camera, this.container.offsetWidth, this.container.offsetHeight )\n    this.ssaoPass.kernelRadius = 0.03\n    this.ssaoPass.kernelSize = 16\n    this.ssaoPass.minDistance = 0.0002\n    this.ssaoPass.maxDistance = 10\n    this.ssaoPass.output = SSAOPass.OUTPUT.Default\n    this.composer.addPass( this.ssaoPass )\n\n    this.pauseSSAO = false\n    this.controls.addEventListener( 'start', () => { this.pauseSSAO = true } )\n    this.controls.addEventListener( 'end', () => { this.pauseSSAO = false } )\n\n    this.stats = new Stats()\n    this.container.appendChild( this.stats.dom )\n\n    window.addEventListener( 'resize', this.onWindowResize.bind( this ), false )\n\n    this.sectionPlaneHelper = new SectionPlaneHelper( this )\n    this.sceneManager = new ObjectManager( this )\n    this.selectionHelper = new SelectionHelper( this )\n\n    this.sectionPlaneHelper.createSectionPlane()\n\n    this.sceneLights()\n    this.animate()\n\n    this.loaders = []\n  }\n\n  sceneLights() {\n    let ambientLight = new THREE.AmbientLight( 0xffffff )\n    this.scene.add( ambientLight )\n\n    const lights = []\n    lights[ 0 ] = new THREE.PointLight( 0xffffff, 0.21, 0 )\n    lights[ 1 ] = new THREE.PointLight( 0xffffff, 0.21, 0 )\n    lights[ 2 ] = new THREE.PointLight( 0xffffff, 0.21, 0 )\n    lights[ 3 ] = new THREE.PointLight( 0xffffff, 0.21, 0 )\n\n    let factor = 1000\n    lights[ 0 ].position.set( 1 * factor, 1 * factor, 1 * factor )\n    lights[ 1 ].position.set( 1 * factor, -1 * factor, 1 * factor )\n    lights[ 2 ].position.set( -1 * factor, -1 * factor, 1 * factor )\n    lights[ 3 ].position.set( -1 * factor, 1 * factor, 1 * factor )\n\n    this.scene.add( lights[ 0 ] )\n    this.scene.add( lights[ 1 ] )\n    this.scene.add( lights[ 2 ] )\n    this.scene.add( lights[ 3 ] )\n\n    // let sphereSize = 0.2\n    // this.scene.add( new THREE.PointLightHelper( lights[ 0 ], sphereSize ) )\n    // this.scene.add( new THREE.PointLightHelper( lights[ 1 ], sphereSize ) )\n    // this.scene.add( new THREE.PointLightHelper( lights[ 2 ], sphereSize ) )\n    // this.scene.add( new THREE.PointLightHelper( lights[ 3 ], sphereSize ) )\n\n\n    const hemiLight = new THREE.HemisphereLight( 0xffffff, 0x0, 0.2 )\n    hemiLight.color.setHSL( 1, 1, 1 )\n    hemiLight.groundColor.setHSL( 0.095, 1, 0.75 )\n    hemiLight.up.set( 0, 0, 1 )\n    this.scene.add( hemiLight )\n\n    let axesHelper = new THREE.AxesHelper( 1 )\n    this.scene.add( axesHelper )\n\n    let group = new THREE.Group()\n    this.scene.add( group )\n  }\n\n  onWindowResize() {\n    this.camera.aspect = this.container.offsetWidth / this.container.offsetHeight\n    this.camera.updateProjectionMatrix()\n    this.renderer.setSize( this.container.offsetWidth, this.container.offsetHeight )\n    this.composer.setSize( this.container.offsetWidth, this.container.offsetHeight )\n  }\n\n  animate() {\n    requestAnimationFrame( this.animate.bind( this ) )\n    this.controls.update()\n    this.stats.begin()\n    this.render()\n    this.stats.end()\n  }\n\n  render() {\n    if ( this.reflections && this.reflectionsNeedUpdate ) {\n      // Note: scene based \"dynamic\" reflections need to be handled a bit more carefully, or else:\n      // GL ERROR :GL_INVALID_OPERATION : glDrawElements: Source and destination textures of the draw are the same.\n      // First remove the env map from all materials\n      for ( let obj of this.sceneManager.objects ) {\n        obj.material.envMap = null\n      }\n\n      // Second, set a scene background color (renderer is transparent by default)\n      // and then finally update the cubemap camera.\n      this.scene.background = new THREE.Color( '#F0F3F8' )\n      this.cubeCamera.update( this.renderer, this.scene )\n      this.scene.background = null\n\n      // Finally, re-set the env maps of all materials\n      for ( let obj of this.sceneManager.objects ) {\n        obj.material.envMap = this.cubeCamera.renderTarget.texture\n      }\n      this.reflectionsNeedUpdate = false\n    }\n\n\n    // Render as usual\n    // TODO: post processing SSAO sucks so much currently it's off by default\n    if ( this.postprocessing && !this.pauseSSAO && !this.renderer.localClippingEnabled ){\n      this.composer.render( this.scene, this.camera )\n    }\n    else {\n      this.renderer.render( this.scene, this.camera )\n    }\n  }\n\n  async loadObject( url, token ) {\n    let loader = new ViewerObjectLoader( this, url, token )\n    this.loaders.push( loader )\n    await loader.load()\n  }\n\n  dispose() {\n    // TODO\n  }\n}\n","import ObjectLoader from './ObjectLoader'\nimport Converter from './Converter'\n\n/**\n * Helper wrapper around the ObjectLoader class, with some built in assumptions.\n */\n\nexport default class ViewerObjectLoader {\n\n\n  constructor( parent, objectUrl, authToken ) {\n    this.viewer = parent\n    this.token = authToken || localStorage.getItem( 'AuthToken' )\n\n    if ( !this.token ) {\n      throw new Error( 'No suitable authorization token found.' )\n    }\n\n    // example url: `https://staging.speckle.dev/streams/a75ab4f10f/objects/f33645dc9a702de8af0af16bd5f655b0`\n    let url = new URL( objectUrl )\n\n    let segments = url.pathname.split( '/' )\n    if ( segments.length < 5 || url.pathname.indexOf( 'streams' ) === -1 || url.pathname.indexOf( 'objects' ) === -1 ) {\n      throw new Error( 'Unexpected object url format.' )\n    }\n\n    this.serverUrl = url.origin\n    this.streamId = segments[2]\n    this.objectId = segments[4]\n\n    this.loader = new ObjectLoader( {\n      serverUrl: this.serverUrl,\n      token: this.token,\n      streamId: this.streamId,\n      objectId: this.objectId,\n    } )\n\n    this.converter = new Converter( this.loader )\n  }\n\n  async load( ) {\n    let first = true\n    let current = 0\n    let total = 0\n    for await ( let obj of this.loader.getObjectIterator() ) {\n      if ( first ) {\n        ( async() => {\n          await this.converter.traverseAndConvert( obj, ( o ) => this.viewer.sceneManager.addObject( o ) )\n        } )()\n        first = false\n        total = obj.totalChildrenCount\n      }\n      current++\n      this.viewer.emit( 'load-progress', { progress: current/total, id: this.objectId } )\n    }\n  }\n}\n","/**\n * lodash (Custom Build) <https://lodash.com/>\n * Build: `lodash modularize exports=\"npm\" -o ./`\n * Copyright jQuery Foundation and other contributors <https://jquery.org/>\n * Released under MIT license <https://lodash.com/license>\n * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>\n * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors\n */\n\n/** Used as the `TypeError` message for \"Functions\" methods. */\nvar FUNC_ERROR_TEXT = 'Expected a function';\n\n/** Used as references for various `Number` constants. */\nvar NAN = 0 / 0;\n\n/** `Object#toString` result references. */\nvar symbolTag = '[object Symbol]';\n\n/** Used to match leading and trailing whitespace. */\nvar reTrim = /^\\s+|\\s+$/g;\n\n/** Used to detect bad signed hexadecimal string values. */\nvar reIsBadHex = /^[-+]0x[0-9a-f]+$/i;\n\n/** Used to detect binary string values. */\nvar reIsBinary = /^0b[01]+$/i;\n\n/** Used to detect octal string values. */\nvar reIsOctal = /^0o[0-7]+$/i;\n\n/** Built-in method references without a dependency on `root`. */\nvar freeParseInt = parseInt;\n\n/** Detect free variable `global` from Node.js. */\nvar freeGlobal = typeof global == 'object' && global && global.Object === Object && global;\n\n/** Detect free variable `self`. */\nvar freeSelf = typeof self == 'object' && self && self.Object === Object && self;\n\n/** Used as a reference to the global object. */\nvar root = freeGlobal || freeSelf || Function('return this')();\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeMax = Math.max,\n    nativeMin = Math.min;\n\n/**\n * Gets the timestamp of the number of milliseconds that have elapsed since\n * the Unix epoch (1 January 1970 00:00:00 UTC).\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Date\n * @returns {number} Returns the timestamp.\n * @example\n *\n * _.defer(function(stamp) {\n *   console.log(_.now() - stamp);\n * }, _.now());\n * // => Logs the number of milliseconds it took for the deferred invocation.\n */\nvar now = function() {\n  return root.Date.now();\n};\n\n/**\n * Creates a debounced function that delays invoking `func` until after `wait`\n * milliseconds have elapsed since the last time the debounced function was\n * invoked. The debounced function comes with a `cancel` method to cancel\n * delayed `func` invocations and a `flush` method to immediately invoke them.\n * Provide `options` to indicate whether `func` should be invoked on the\n * leading and/or trailing edge of the `wait` timeout. The `func` is invoked\n * with the last arguments provided to the debounced function. Subsequent\n * calls to the debounced function return the result of the last `func`\n * invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is\n * invoked on the trailing edge of the timeout only if the debounced function\n * is invoked more than once during the `wait` timeout.\n *\n * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.debounce` and `_.throttle`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to debounce.\n * @param {number} [wait=0] The number of milliseconds to delay.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=false]\n *  Specify invoking on the leading edge of the timeout.\n * @param {number} [options.maxWait]\n *  The maximum time `func` is allowed to be delayed before it's invoked.\n * @param {boolean} [options.trailing=true]\n *  Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new debounced function.\n * @example\n *\n * // Avoid costly calculations while the window size is in flux.\n * jQuery(window).on('resize', _.debounce(calculateLayout, 150));\n *\n * // Invoke `sendMail` when clicked, debouncing subsequent calls.\n * jQuery(element).on('click', _.debounce(sendMail, 300, {\n *   'leading': true,\n *   'trailing': false\n * }));\n *\n * // Ensure `batchLog` is invoked once after 1 second of debounced calls.\n * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });\n * var source = new EventSource('/stream');\n * jQuery(source).on('message', debounced);\n *\n * // Cancel the trailing debounced invocation.\n * jQuery(window).on('popstate', debounced.cancel);\n */\nfunction debounce(func, wait, options) {\n  var lastArgs,\n      lastThis,\n      maxWait,\n      result,\n      timerId,\n      lastCallTime,\n      lastInvokeTime = 0,\n      leading = false,\n      maxing = false,\n      trailing = true;\n\n  if (typeof func != 'function') {\n    throw new TypeError(FUNC_ERROR_TEXT);\n  }\n  wait = toNumber(wait) || 0;\n  if (isObject(options)) {\n    leading = !!options.leading;\n    maxing = 'maxWait' in options;\n    maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;\n    trailing = 'trailing' in options ? !!options.trailing : trailing;\n  }\n\n  function invokeFunc(time) {\n    var args = lastArgs,\n        thisArg = lastThis;\n\n    lastArgs = lastThis = undefined;\n    lastInvokeTime = time;\n    result = func.apply(thisArg, args);\n    return result;\n  }\n\n  function leadingEdge(time) {\n    // Reset any `maxWait` timer.\n    lastInvokeTime = time;\n    // Start the timer for the trailing edge.\n    timerId = setTimeout(timerExpired, wait);\n    // Invoke the leading edge.\n    return leading ? invokeFunc(time) : result;\n  }\n\n  function remainingWait(time) {\n    var timeSinceLastCall = time - lastCallTime,\n        timeSinceLastInvoke = time - lastInvokeTime,\n        result = wait - timeSinceLastCall;\n\n    return maxing ? nativeMin(result, maxWait - timeSinceLastInvoke) : result;\n  }\n\n  function shouldInvoke(time) {\n    var timeSinceLastCall = time - lastCallTime,\n        timeSinceLastInvoke = time - lastInvokeTime;\n\n    // Either this is the first call, activity has stopped and we're at the\n    // trailing edge, the system time has gone backwards and we're treating\n    // it as the trailing edge, or we've hit the `maxWait` limit.\n    return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||\n      (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));\n  }\n\n  function timerExpired() {\n    var time = now();\n    if (shouldInvoke(time)) {\n      return trailingEdge(time);\n    }\n    // Restart the timer.\n    timerId = setTimeout(timerExpired, remainingWait(time));\n  }\n\n  function trailingEdge(time) {\n    timerId = undefined;\n\n    // Only invoke if we have `lastArgs` which means `func` has been\n    // debounced at least once.\n    if (trailing && lastArgs) {\n      return invokeFunc(time);\n    }\n    lastArgs = lastThis = undefined;\n    return result;\n  }\n\n  function cancel() {\n    if (timerId !== undefined) {\n      clearTimeout(timerId);\n    }\n    lastInvokeTime = 0;\n    lastArgs = lastCallTime = lastThis = timerId = undefined;\n  }\n\n  function flush() {\n    return timerId === undefined ? result : trailingEdge(now());\n  }\n\n  function debounced() {\n    var time = now(),\n        isInvoking = shouldInvoke(time);\n\n    lastArgs = arguments;\n    lastThis = this;\n    lastCallTime = time;\n\n    if (isInvoking) {\n      if (timerId === undefined) {\n        return leadingEdge(lastCallTime);\n      }\n      if (maxing) {\n        // Handle invocations in a tight loop.\n        timerId = setTimeout(timerExpired, wait);\n        return invokeFunc(lastCallTime);\n      }\n    }\n    if (timerId === undefined) {\n      timerId = setTimeout(timerExpired, wait);\n    }\n    return result;\n  }\n  debounced.cancel = cancel;\n  debounced.flush = flush;\n  return debounced;\n}\n\n/**\n * Checks if `value` is the\n * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)\n * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an object, else `false`.\n * @example\n *\n * _.isObject({});\n * // => true\n *\n * _.isObject([1, 2, 3]);\n * // => true\n *\n * _.isObject(_.noop);\n * // => true\n *\n * _.isObject(null);\n * // => false\n */\nfunction isObject(value) {\n  var type = typeof value;\n  return !!value && (type == 'object' || type == 'function');\n}\n\n/**\n * Checks if `value` is object-like. A value is object-like if it's not `null`\n * and has a `typeof` result of \"object\".\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n * @example\n *\n * _.isObjectLike({});\n * // => true\n *\n * _.isObjectLike([1, 2, 3]);\n * // => true\n *\n * _.isObjectLike(_.noop);\n * // => false\n *\n * _.isObjectLike(null);\n * // => false\n */\nfunction isObjectLike(value) {\n  return !!value && typeof value == 'object';\n}\n\n/**\n * Checks if `value` is classified as a `Symbol` primitive or object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.\n * @example\n *\n * _.isSymbol(Symbol.iterator);\n * // => true\n *\n * _.isSymbol('abc');\n * // => false\n */\nfunction isSymbol(value) {\n  return typeof value == 'symbol' ||\n    (isObjectLike(value) && objectToString.call(value) == symbolTag);\n}\n\n/**\n * Converts `value` to a number.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to process.\n * @returns {number} Returns the number.\n * @example\n *\n * _.toNumber(3.2);\n * // => 3.2\n *\n * _.toNumber(Number.MIN_VALUE);\n * // => 5e-324\n *\n * _.toNumber(Infinity);\n * // => Infinity\n *\n * _.toNumber('3.2');\n * // => 3.2\n */\nfunction toNumber(value) {\n  if (typeof value == 'number') {\n    return value;\n  }\n  if (isSymbol(value)) {\n    return NAN;\n  }\n  if (isObject(value)) {\n    var other = typeof value.valueOf == 'function' ? value.valueOf() : value;\n    value = isObject(other) ? (other + '') : other;\n  }\n  if (typeof value != 'string') {\n    return value === 0 ? value : +value;\n  }\n  value = value.replace(reTrim, '');\n  var isBinary = reIsBinary.test(value);\n  return (isBinary || reIsOctal.test(value))\n    ? freeParseInt(value.slice(2), isBinary ? 2 : 8)\n    : (reIsBadHex.test(value) ? NAN : +value);\n}\n\nmodule.exports = debounce;\n","// threejs.org/license\nconst REVISION = '124';\nconst MOUSE = { LEFT: 0, MIDDLE: 1, RIGHT: 2, ROTATE: 0, DOLLY: 1, PAN: 2 };\nconst TOUCH = { ROTATE: 0, PAN: 1, DOLLY_PAN: 2, DOLLY_ROTATE: 3 };\nconst CullFaceNone = 0;\nconst CullFaceBack = 1;\nconst CullFaceFront = 2;\nconst CullFaceFrontBack = 3;\nconst BasicShadowMap = 0;\nconst PCFShadowMap = 1;\nconst PCFSoftShadowMap = 2;\nconst VSMShadowMap = 3;\nconst FrontSide = 0;\nconst BackSide = 1;\nconst DoubleSide = 2;\nconst FlatShading = 1;\nconst SmoothShading = 2;\nconst NoBlending = 0;\nconst NormalBlending = 1;\nconst AdditiveBlending = 2;\nconst SubtractiveBlending = 3;\nconst MultiplyBlending = 4;\nconst CustomBlending = 5;\nconst AddEquation = 100;\nconst SubtractEquation = 101;\nconst ReverseSubtractEquation = 102;\nconst MinEquation = 103;\nconst MaxEquation = 104;\nconst ZeroFactor = 200;\nconst OneFactor = 201;\nconst SrcColorFactor = 202;\nconst OneMinusSrcColorFactor = 203;\nconst SrcAlphaFactor = 204;\nconst OneMinusSrcAlphaFactor = 205;\nconst DstAlphaFactor = 206;\nconst OneMinusDstAlphaFactor = 207;\nconst DstColorFactor = 208;\nconst OneMinusDstColorFactor = 209;\nconst SrcAlphaSaturateFactor = 210;\nconst NeverDepth = 0;\nconst AlwaysDepth = 1;\nconst LessDepth = 2;\nconst LessEqualDepth = 3;\nconst EqualDepth = 4;\nconst GreaterEqualDepth = 5;\nconst GreaterDepth = 6;\nconst NotEqualDepth = 7;\nconst MultiplyOperation = 0;\nconst MixOperation = 1;\nconst AddOperation = 2;\nconst NoToneMapping = 0;\nconst LinearToneMapping = 1;\nconst ReinhardToneMapping = 2;\nconst CineonToneMapping = 3;\nconst ACESFilmicToneMapping = 4;\nconst CustomToneMapping = 5;\n\nconst UVMapping = 300;\nconst CubeReflectionMapping = 301;\nconst CubeRefractionMapping = 302;\nconst EquirectangularReflectionMapping = 303;\nconst EquirectangularRefractionMapping = 304;\nconst CubeUVReflectionMapping = 306;\nconst CubeUVRefractionMapping = 307;\nconst RepeatWrapping = 1000;\nconst ClampToEdgeWrapping = 1001;\nconst MirroredRepeatWrapping = 1002;\nconst NearestFilter = 1003;\nconst NearestMipmapNearestFilter = 1004;\nconst NearestMipMapNearestFilter = 1004;\nconst NearestMipmapLinearFilter = 1005;\nconst NearestMipMapLinearFilter = 1005;\nconst LinearFilter = 1006;\nconst LinearMipmapNearestFilter = 1007;\nconst LinearMipMapNearestFilter = 1007;\nconst LinearMipmapLinearFilter = 1008;\nconst LinearMipMapLinearFilter = 1008;\nconst UnsignedByteType = 1009;\nconst ByteType = 1010;\nconst ShortType = 1011;\nconst UnsignedShortType = 1012;\nconst IntType = 1013;\nconst UnsignedIntType = 1014;\nconst FloatType = 1015;\nconst HalfFloatType = 1016;\nconst UnsignedShort4444Type = 1017;\nconst UnsignedShort5551Type = 1018;\nconst UnsignedShort565Type = 1019;\nconst UnsignedInt248Type = 1020;\nconst AlphaFormat = 1021;\nconst RGBFormat = 1022;\nconst RGBAFormat = 1023;\nconst LuminanceFormat = 1024;\nconst LuminanceAlphaFormat = 1025;\nconst RGBEFormat = RGBAFormat;\nconst DepthFormat = 1026;\nconst DepthStencilFormat = 1027;\nconst RedFormat = 1028;\nconst RedIntegerFormat = 1029;\nconst RGFormat = 1030;\nconst RGIntegerFormat = 1031;\nconst RGBIntegerFormat = 1032;\nconst RGBAIntegerFormat = 1033;\n\nconst RGB_S3TC_DXT1_Format = 33776;\nconst RGBA_S3TC_DXT1_Format = 33777;\nconst RGBA_S3TC_DXT3_Format = 33778;\nconst RGBA_S3TC_DXT5_Format = 33779;\nconst RGB_PVRTC_4BPPV1_Format = 35840;\nconst RGB_PVRTC_2BPPV1_Format = 35841;\nconst RGBA_PVRTC_4BPPV1_Format = 35842;\nconst RGBA_PVRTC_2BPPV1_Format = 35843;\nconst RGB_ETC1_Format = 36196;\nconst RGB_ETC2_Format = 37492;\nconst RGBA_ETC2_EAC_Format = 37496;\nconst RGBA_ASTC_4x4_Format = 37808;\nconst RGBA_ASTC_5x4_Format = 37809;\nconst RGBA_ASTC_5x5_Format = 37810;\nconst RGBA_ASTC_6x5_Format = 37811;\nconst RGBA_ASTC_6x6_Format = 37812;\nconst RGBA_ASTC_8x5_Format = 37813;\nconst RGBA_ASTC_8x6_Format = 37814;\nconst RGBA_ASTC_8x8_Format = 37815;\nconst RGBA_ASTC_10x5_Format = 37816;\nconst RGBA_ASTC_10x6_Format = 37817;\nconst RGBA_ASTC_10x8_Format = 37818;\nconst RGBA_ASTC_10x10_Format = 37819;\nconst RGBA_ASTC_12x10_Format = 37820;\nconst RGBA_ASTC_12x12_Format = 37821;\nconst RGBA_BPTC_Format = 36492;\nconst SRGB8_ALPHA8_ASTC_4x4_Format = 37840;\nconst SRGB8_ALPHA8_ASTC_5x4_Format = 37841;\nconst SRGB8_ALPHA8_ASTC_5x5_Format = 37842;\nconst SRGB8_ALPHA8_ASTC_6x5_Format = 37843;\nconst SRGB8_ALPHA8_ASTC_6x6_Format = 37844;\nconst SRGB8_ALPHA8_ASTC_8x5_Format = 37845;\nconst SRGB8_ALPHA8_ASTC_8x6_Format = 37846;\nconst SRGB8_ALPHA8_ASTC_8x8_Format = 37847;\nconst SRGB8_ALPHA8_ASTC_10x5_Format = 37848;\nconst SRGB8_ALPHA8_ASTC_10x6_Format = 37849;\nconst SRGB8_ALPHA8_ASTC_10x8_Format = 37850;\nconst SRGB8_ALPHA8_ASTC_10x10_Format = 37851;\nconst SRGB8_ALPHA8_ASTC_12x10_Format = 37852;\nconst SRGB8_ALPHA8_ASTC_12x12_Format = 37853;\nconst LoopOnce = 2200;\nconst LoopRepeat = 2201;\nconst LoopPingPong = 2202;\nconst InterpolateDiscrete = 2300;\nconst InterpolateLinear = 2301;\nconst InterpolateSmooth = 2302;\nconst ZeroCurvatureEnding = 2400;\nconst ZeroSlopeEnding = 2401;\nconst WrapAroundEnding = 2402;\nconst NormalAnimationBlendMode = 2500;\nconst AdditiveAnimationBlendMode = 2501;\nconst TrianglesDrawMode = 0;\nconst TriangleStripDrawMode = 1;\nconst TriangleFanDrawMode = 2;\nconst LinearEncoding = 3000;\nconst sRGBEncoding = 3001;\nconst GammaEncoding = 3007;\nconst RGBEEncoding = 3002;\nconst LogLuvEncoding = 3003;\nconst RGBM7Encoding = 3004;\nconst RGBM16Encoding = 3005;\nconst RGBDEncoding = 3006;\nconst BasicDepthPacking = 3200;\nconst RGBADepthPacking = 3201;\nconst TangentSpaceNormalMap = 0;\nconst ObjectSpaceNormalMap = 1;\n\nconst ZeroStencilOp = 0;\nconst KeepStencilOp = 7680;\nconst ReplaceStencilOp = 7681;\nconst IncrementStencilOp = 7682;\nconst DecrementStencilOp = 7683;\nconst IncrementWrapStencilOp = 34055;\nconst DecrementWrapStencilOp = 34056;\nconst InvertStencilOp = 5386;\n\nconst NeverStencilFunc = 512;\nconst LessStencilFunc = 513;\nconst EqualStencilFunc = 514;\nconst LessEqualStencilFunc = 515;\nconst GreaterStencilFunc = 516;\nconst NotEqualStencilFunc = 517;\nconst GreaterEqualStencilFunc = 518;\nconst AlwaysStencilFunc = 519;\n\nconst StaticDrawUsage = 35044;\nconst DynamicDrawUsage = 35048;\nconst StreamDrawUsage = 35040;\nconst StaticReadUsage = 35045;\nconst DynamicReadUsage = 35049;\nconst StreamReadUsage = 35041;\nconst StaticCopyUsage = 35046;\nconst DynamicCopyUsage = 35050;\nconst StreamCopyUsage = 35042;\n\nconst GLSL1 = '100';\nconst GLSL3 = '300 es';\n\n/**\n * https://github.com/mrdoob/eventdispatcher.js/\n */\n\nfunction EventDispatcher() {}\n\nObject.assign( EventDispatcher.prototype, {\n\n\taddEventListener: function ( type, listener ) {\n\n\t\tif ( this._listeners === undefined ) this._listeners = {};\n\n\t\tconst listeners = this._listeners;\n\n\t\tif ( listeners[ type ] === undefined ) {\n\n\t\t\tlisteners[ type ] = [];\n\n\t\t}\n\n\t\tif ( listeners[ type ].indexOf( listener ) === - 1 ) {\n\n\t\t\tlisteners[ type ].push( listener );\n\n\t\t}\n\n\t},\n\n\thasEventListener: function ( type, listener ) {\n\n\t\tif ( this._listeners === undefined ) return false;\n\n\t\tconst listeners = this._listeners;\n\n\t\treturn listeners[ type ] !== undefined && listeners[ type ].indexOf( listener ) !== - 1;\n\n\t},\n\n\tremoveEventListener: function ( type, listener ) {\n\n\t\tif ( this._listeners === undefined ) return;\n\n\t\tconst listeners = this._listeners;\n\t\tconst listenerArray = listeners[ type ];\n\n\t\tif ( listenerArray !== undefined ) {\n\n\t\t\tconst index = listenerArray.indexOf( listener );\n\n\t\t\tif ( index !== - 1 ) {\n\n\t\t\t\tlistenerArray.splice( index, 1 );\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\tdispatchEvent: function ( event ) {\n\n\t\tif ( this._listeners === undefined ) return;\n\n\t\tconst listeners = this._listeners;\n\t\tconst listenerArray = listeners[ event.type ];\n\n\t\tif ( listenerArray !== undefined ) {\n\n\t\t\tevent.target = this;\n\n\t\t\t// Make a copy, in case listeners are removed while iterating.\n\t\t\tconst array = listenerArray.slice( 0 );\n\n\t\t\tfor ( let i = 0, l = array.length; i < l; i ++ ) {\n\n\t\t\t\tarray[ i ].call( this, event );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n} );\n\nconst _lut = [];\n\nfor ( let i = 0; i < 256; i ++ ) {\n\n\t_lut[ i ] = ( i < 16 ? '0' : '' ) + ( i ).toString( 16 );\n\n}\n\nlet _seed = 1234567;\n\nconst MathUtils = {\n\n\tDEG2RAD: Math.PI / 180,\n\tRAD2DEG: 180 / Math.PI,\n\n\tgenerateUUID: function () {\n\n\t\t// http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript/21963136#21963136\n\n\t\tconst d0 = Math.random() * 0xffffffff | 0;\n\t\tconst d1 = Math.random() * 0xffffffff | 0;\n\t\tconst d2 = Math.random() * 0xffffffff | 0;\n\t\tconst d3 = Math.random() * 0xffffffff | 0;\n\t\tconst uuid = _lut[ d0 & 0xff ] + _lut[ d0 >> 8 & 0xff ] + _lut[ d0 >> 16 & 0xff ] + _lut[ d0 >> 24 & 0xff ] + '-' +\n\t\t\t_lut[ d1 & 0xff ] + _lut[ d1 >> 8 & 0xff ] + '-' + _lut[ d1 >> 16 & 0x0f | 0x40 ] + _lut[ d1 >> 24 & 0xff ] + '-' +\n\t\t\t_lut[ d2 & 0x3f | 0x80 ] + _lut[ d2 >> 8 & 0xff ] + '-' + _lut[ d2 >> 16 & 0xff ] + _lut[ d2 >> 24 & 0xff ] +\n\t\t\t_lut[ d3 & 0xff ] + _lut[ d3 >> 8 & 0xff ] + _lut[ d3 >> 16 & 0xff ] + _lut[ d3 >> 24 & 0xff ];\n\n\t\t// .toUpperCase() here flattens concatenated strings to save heap memory space.\n\t\treturn uuid.toUpperCase();\n\n\t},\n\n\tclamp: function ( value, min, max ) {\n\n\t\treturn Math.max( min, Math.min( max, value ) );\n\n\t},\n\n\t// compute euclidian modulo of m % n\n\t// https://en.wikipedia.org/wiki/Modulo_operation\n\n\teuclideanModulo: function ( n, m ) {\n\n\t\treturn ( ( n % m ) + m ) % m;\n\n\t},\n\n\t// Linear mapping from range <a1, a2> to range <b1, b2>\n\n\tmapLinear: function ( x, a1, a2, b1, b2 ) {\n\n\t\treturn b1 + ( x - a1 ) * ( b2 - b1 ) / ( a2 - a1 );\n\n\t},\n\n\t// https://en.wikipedia.org/wiki/Linear_interpolation\n\n\tlerp: function ( x, y, t ) {\n\n\t\treturn ( 1 - t ) * x + t * y;\n\n\t},\n\n\t// http://en.wikipedia.org/wiki/Smoothstep\n\n\tsmoothstep: function ( x, min, max ) {\n\n\t\tif ( x <= min ) return 0;\n\t\tif ( x >= max ) return 1;\n\n\t\tx = ( x - min ) / ( max - min );\n\n\t\treturn x * x * ( 3 - 2 * x );\n\n\t},\n\n\tsmootherstep: function ( x, min, max ) {\n\n\t\tif ( x <= min ) return 0;\n\t\tif ( x >= max ) return 1;\n\n\t\tx = ( x - min ) / ( max - min );\n\n\t\treturn x * x * x * ( x * ( x * 6 - 15 ) + 10 );\n\n\t},\n\n\t// Random integer from <low, high> interval\n\n\trandInt: function ( low, high ) {\n\n\t\treturn low + Math.floor( Math.random() * ( high - low + 1 ) );\n\n\t},\n\n\t// Random float from <low, high> interval\n\n\trandFloat: function ( low, high ) {\n\n\t\treturn low + Math.random() * ( high - low );\n\n\t},\n\n\t// Random float from <-range/2, range/2> interval\n\n\trandFloatSpread: function ( range ) {\n\n\t\treturn range * ( 0.5 - Math.random() );\n\n\t},\n\n\t// Deterministic pseudo-random float in the interval [ 0, 1 ]\n\n\tseededRandom: function ( s ) {\n\n\t\tif ( s !== undefined ) _seed = s % 2147483647;\n\n\t\t// Park-Miller algorithm\n\n\t\t_seed = _seed * 16807 % 2147483647;\n\n\t\treturn ( _seed - 1 ) / 2147483646;\n\n\t},\n\n\tdegToRad: function ( degrees ) {\n\n\t\treturn degrees * MathUtils.DEG2RAD;\n\n\t},\n\n\tradToDeg: function ( radians ) {\n\n\t\treturn radians * MathUtils.RAD2DEG;\n\n\t},\n\n\tisPowerOfTwo: function ( value ) {\n\n\t\treturn ( value & ( value - 1 ) ) === 0 && value !== 0;\n\n\t},\n\n\tceilPowerOfTwo: function ( value ) {\n\n\t\treturn Math.pow( 2, Math.ceil( Math.log( value ) / Math.LN2 ) );\n\n\t},\n\n\tfloorPowerOfTwo: function ( value ) {\n\n\t\treturn Math.pow( 2, Math.floor( Math.log( value ) / Math.LN2 ) );\n\n\t},\n\n\tsetQuaternionFromProperEuler: function ( q, a, b, c, order ) {\n\n\t\t// Intrinsic Proper Euler Angles - see https://en.wikipedia.org/wiki/Euler_angles\n\n\t\t// rotations are applied to the axes in the order specified by 'order'\n\t\t// rotation by angle 'a' is applied first, then by angle 'b', then by angle 'c'\n\t\t// angles are in radians\n\n\t\tconst cos = Math.cos;\n\t\tconst sin = Math.sin;\n\n\t\tconst c2 = cos( b / 2 );\n\t\tconst s2 = sin( b / 2 );\n\n\t\tconst c13 = cos( ( a + c ) / 2 );\n\t\tconst s13 = sin( ( a + c ) / 2 );\n\n\t\tconst c1_3 = cos( ( a - c ) / 2 );\n\t\tconst s1_3 = sin( ( a - c ) / 2 );\n\n\t\tconst c3_1 = cos( ( c - a ) / 2 );\n\t\tconst s3_1 = sin( ( c - a ) / 2 );\n\n\t\tswitch ( order ) {\n\n\t\t\tcase 'XYX':\n\t\t\t\tq.set( c2 * s13, s2 * c1_3, s2 * s1_3, c2 * c13 );\n\t\t\t\tbreak;\n\n\t\t\tcase 'YZY':\n\t\t\t\tq.set( s2 * s1_3, c2 * s13, s2 * c1_3, c2 * c13 );\n\t\t\t\tbreak;\n\n\t\t\tcase 'ZXZ':\n\t\t\t\tq.set( s2 * c1_3, s2 * s1_3, c2 * s13, c2 * c13 );\n\t\t\t\tbreak;\n\n\t\t\tcase 'XZX':\n\t\t\t\tq.set( c2 * s13, s2 * s3_1, s2 * c3_1, c2 * c13 );\n\t\t\t\tbreak;\n\n\t\t\tcase 'YXY':\n\t\t\t\tq.set( s2 * c3_1, c2 * s13, s2 * s3_1, c2 * c13 );\n\t\t\t\tbreak;\n\n\t\t\tcase 'ZYZ':\n\t\t\t\tq.set( s2 * s3_1, s2 * c3_1, c2 * s13, c2 * c13 );\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\t\t\t\tconsole.warn( 'THREE.MathUtils: .setQuaternionFromProperEuler() encountered an unknown order: ' + order );\n\n\t\t}\n\n\t}\n\n};\n\nclass Vector2 {\n\n\tconstructor( x = 0, y = 0 ) {\n\n\t\tObject.defineProperty( this, 'isVector2', { value: true } );\n\n\t\tthis.x = x;\n\t\tthis.y = y;\n\n\t}\n\n\tget width() {\n\n\t\treturn this.x;\n\n\t}\n\n\tset width( value ) {\n\n\t\tthis.x = value;\n\n\t}\n\n\tget height() {\n\n\t\treturn this.y;\n\n\t}\n\n\tset height( value ) {\n\n\t\tthis.y = value;\n\n\t}\n\n\tset( x, y ) {\n\n\t\tthis.x = x;\n\t\tthis.y = y;\n\n\t\treturn this;\n\n\t}\n\n\tsetScalar( scalar ) {\n\n\t\tthis.x = scalar;\n\t\tthis.y = scalar;\n\n\t\treturn this;\n\n\t}\n\n\tsetX( x ) {\n\n\t\tthis.x = x;\n\n\t\treturn this;\n\n\t}\n\n\tsetY( y ) {\n\n\t\tthis.y = y;\n\n\t\treturn this;\n\n\t}\n\n\tsetComponent( index, value ) {\n\n\t\tswitch ( index ) {\n\n\t\t\tcase 0: this.x = value; break;\n\t\t\tcase 1: this.y = value; break;\n\t\t\tdefault: throw new Error( 'index is out of range: ' + index );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tgetComponent( index ) {\n\n\t\tswitch ( index ) {\n\n\t\t\tcase 0: return this.x;\n\t\t\tcase 1: return this.y;\n\t\t\tdefault: throw new Error( 'index is out of range: ' + index );\n\n\t\t}\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor( this.x, this.y );\n\n\t}\n\n\tcopy( v ) {\n\n\t\tthis.x = v.x;\n\t\tthis.y = v.y;\n\n\t\treturn this;\n\n\t}\n\n\tadd( v, w ) {\n\n\t\tif ( w !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Vector2: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );\n\t\t\treturn this.addVectors( v, w );\n\n\t\t}\n\n\t\tthis.x += v.x;\n\t\tthis.y += v.y;\n\n\t\treturn this;\n\n\t}\n\n\taddScalar( s ) {\n\n\t\tthis.x += s;\n\t\tthis.y += s;\n\n\t\treturn this;\n\n\t}\n\n\taddVectors( a, b ) {\n\n\t\tthis.x = a.x + b.x;\n\t\tthis.y = a.y + b.y;\n\n\t\treturn this;\n\n\t}\n\n\taddScaledVector( v, s ) {\n\n\t\tthis.x += v.x * s;\n\t\tthis.y += v.y * s;\n\n\t\treturn this;\n\n\t}\n\n\tsub( v, w ) {\n\n\t\tif ( w !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Vector2: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );\n\t\t\treturn this.subVectors( v, w );\n\n\t\t}\n\n\t\tthis.x -= v.x;\n\t\tthis.y -= v.y;\n\n\t\treturn this;\n\n\t}\n\n\tsubScalar( s ) {\n\n\t\tthis.x -= s;\n\t\tthis.y -= s;\n\n\t\treturn this;\n\n\t}\n\n\tsubVectors( a, b ) {\n\n\t\tthis.x = a.x - b.x;\n\t\tthis.y = a.y - b.y;\n\n\t\treturn this;\n\n\t}\n\n\tmultiply( v ) {\n\n\t\tthis.x *= v.x;\n\t\tthis.y *= v.y;\n\n\t\treturn this;\n\n\t}\n\n\tmultiplyScalar( scalar ) {\n\n\t\tthis.x *= scalar;\n\t\tthis.y *= scalar;\n\n\t\treturn this;\n\n\t}\n\n\tdivide( v ) {\n\n\t\tthis.x /= v.x;\n\t\tthis.y /= v.y;\n\n\t\treturn this;\n\n\t}\n\n\tdivideScalar( scalar ) {\n\n\t\treturn this.multiplyScalar( 1 / scalar );\n\n\t}\n\n\tapplyMatrix3( m ) {\n\n\t\tconst x = this.x, y = this.y;\n\t\tconst e = m.elements;\n\n\t\tthis.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ];\n\t\tthis.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ];\n\n\t\treturn this;\n\n\t}\n\n\tmin( v ) {\n\n\t\tthis.x = Math.min( this.x, v.x );\n\t\tthis.y = Math.min( this.y, v.y );\n\n\t\treturn this;\n\n\t}\n\n\tmax( v ) {\n\n\t\tthis.x = Math.max( this.x, v.x );\n\t\tthis.y = Math.max( this.y, v.y );\n\n\t\treturn this;\n\n\t}\n\n\tclamp( min, max ) {\n\n\t\t// assumes min < max, componentwise\n\n\t\tthis.x = Math.max( min.x, Math.min( max.x, this.x ) );\n\t\tthis.y = Math.max( min.y, Math.min( max.y, this.y ) );\n\n\t\treturn this;\n\n\t}\n\n\tclampScalar( minVal, maxVal ) {\n\n\t\tthis.x = Math.max( minVal, Math.min( maxVal, this.x ) );\n\t\tthis.y = Math.max( minVal, Math.min( maxVal, this.y ) );\n\n\t\treturn this;\n\n\t}\n\n\tclampLength( min, max ) {\n\n\t\tconst length = this.length();\n\n\t\treturn this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );\n\n\t}\n\n\tfloor() {\n\n\t\tthis.x = Math.floor( this.x );\n\t\tthis.y = Math.floor( this.y );\n\n\t\treturn this;\n\n\t}\n\n\tceil() {\n\n\t\tthis.x = Math.ceil( this.x );\n\t\tthis.y = Math.ceil( this.y );\n\n\t\treturn this;\n\n\t}\n\n\tround() {\n\n\t\tthis.x = Math.round( this.x );\n\t\tthis.y = Math.round( this.y );\n\n\t\treturn this;\n\n\t}\n\n\troundToZero() {\n\n\t\tthis.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );\n\t\tthis.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );\n\n\t\treturn this;\n\n\t}\n\n\tnegate() {\n\n\t\tthis.x = - this.x;\n\t\tthis.y = - this.y;\n\n\t\treturn this;\n\n\t}\n\n\tdot( v ) {\n\n\t\treturn this.x * v.x + this.y * v.y;\n\n\t}\n\n\tcross( v ) {\n\n\t\treturn this.x * v.y - this.y * v.x;\n\n\t}\n\n\tlengthSq() {\n\n\t\treturn this.x * this.x + this.y * this.y;\n\n\t}\n\n\tlength() {\n\n\t\treturn Math.sqrt( this.x * this.x + this.y * this.y );\n\n\t}\n\n\tmanhattanLength() {\n\n\t\treturn Math.abs( this.x ) + Math.abs( this.y );\n\n\t}\n\n\tnormalize() {\n\n\t\treturn this.divideScalar( this.length() || 1 );\n\n\t}\n\n\tangle() {\n\n\t\t// computes the angle in radians with respect to the positive x-axis\n\n\t\tconst angle = Math.atan2( - this.y, - this.x ) + Math.PI;\n\n\t\treturn angle;\n\n\t}\n\n\tdistanceTo( v ) {\n\n\t\treturn Math.sqrt( this.distanceToSquared( v ) );\n\n\t}\n\n\tdistanceToSquared( v ) {\n\n\t\tconst dx = this.x - v.x, dy = this.y - v.y;\n\t\treturn dx * dx + dy * dy;\n\n\t}\n\n\tmanhattanDistanceTo( v ) {\n\n\t\treturn Math.abs( this.x - v.x ) + Math.abs( this.y - v.y );\n\n\t}\n\n\tsetLength( length ) {\n\n\t\treturn this.normalize().multiplyScalar( length );\n\n\t}\n\n\tlerp( v, alpha ) {\n\n\t\tthis.x += ( v.x - this.x ) * alpha;\n\t\tthis.y += ( v.y - this.y ) * alpha;\n\n\t\treturn this;\n\n\t}\n\n\tlerpVectors( v1, v2, alpha ) {\n\n\t\tthis.x = v1.x + ( v2.x - v1.x ) * alpha;\n\t\tthis.y = v1.y + ( v2.y - v1.y ) * alpha;\n\n\t\treturn this;\n\n\t}\n\n\tequals( v ) {\n\n\t\treturn ( ( v.x === this.x ) && ( v.y === this.y ) );\n\n\t}\n\n\tfromArray( array, offset = 0 ) {\n\n\t\tthis.x = array[ offset ];\n\t\tthis.y = array[ offset + 1 ];\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tarray[ offset ] = this.x;\n\t\tarray[ offset + 1 ] = this.y;\n\n\t\treturn array;\n\n\t}\n\n\tfromBufferAttribute( attribute, index, offset ) {\n\n\t\tif ( offset !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Vector2: offset has been removed from .fromBufferAttribute().' );\n\n\t\t}\n\n\t\tthis.x = attribute.getX( index );\n\t\tthis.y = attribute.getY( index );\n\n\t\treturn this;\n\n\t}\n\n\trotateAround( center, angle ) {\n\n\t\tconst c = Math.cos( angle ), s = Math.sin( angle );\n\n\t\tconst x = this.x - center.x;\n\t\tconst y = this.y - center.y;\n\n\t\tthis.x = x * c - y * s + center.x;\n\t\tthis.y = x * s + y * c + center.y;\n\n\t\treturn this;\n\n\t}\n\n\trandom() {\n\n\t\tthis.x = Math.random();\n\t\tthis.y = Math.random();\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass Matrix3 {\n\n\tconstructor() {\n\n\t\tObject.defineProperty( this, 'isMatrix3', { value: true } );\n\n\t\tthis.elements = [\n\n\t\t\t1, 0, 0,\n\t\t\t0, 1, 0,\n\t\t\t0, 0, 1\n\n\t\t];\n\n\t\tif ( arguments.length > 0 ) {\n\n\t\t\tconsole.error( 'THREE.Matrix3: the constructor no longer reads arguments. use .set() instead.' );\n\n\t\t}\n\n\t}\n\n\tset( n11, n12, n13, n21, n22, n23, n31, n32, n33 ) {\n\n\t\tconst te = this.elements;\n\n\t\tte[ 0 ] = n11; te[ 1 ] = n21; te[ 2 ] = n31;\n\t\tte[ 3 ] = n12; te[ 4 ] = n22; te[ 5 ] = n32;\n\t\tte[ 6 ] = n13; te[ 7 ] = n23; te[ 8 ] = n33;\n\n\t\treturn this;\n\n\t}\n\n\tidentity() {\n\n\t\tthis.set(\n\n\t\t\t1, 0, 0,\n\t\t\t0, 1, 0,\n\t\t\t0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().fromArray( this.elements );\n\n\t}\n\n\tcopy( m ) {\n\n\t\tconst te = this.elements;\n\t\tconst me = m.elements;\n\n\t\tte[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ];\n\t\tte[ 3 ] = me[ 3 ]; te[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ];\n\t\tte[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ]; te[ 8 ] = me[ 8 ];\n\n\t\treturn this;\n\n\t}\n\n\textractBasis( xAxis, yAxis, zAxis ) {\n\n\t\txAxis.setFromMatrix3Column( this, 0 );\n\t\tyAxis.setFromMatrix3Column( this, 1 );\n\t\tzAxis.setFromMatrix3Column( this, 2 );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromMatrix4( m ) {\n\n\t\tconst me = m.elements;\n\n\t\tthis.set(\n\n\t\t\tme[ 0 ], me[ 4 ], me[ 8 ],\n\t\t\tme[ 1 ], me[ 5 ], me[ 9 ],\n\t\t\tme[ 2 ], me[ 6 ], me[ 10 ]\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tmultiply( m ) {\n\n\t\treturn this.multiplyMatrices( this, m );\n\n\t}\n\n\tpremultiply( m ) {\n\n\t\treturn this.multiplyMatrices( m, this );\n\n\t}\n\n\tmultiplyMatrices( a, b ) {\n\n\t\tconst ae = a.elements;\n\t\tconst be = b.elements;\n\t\tconst te = this.elements;\n\n\t\tconst a11 = ae[ 0 ], a12 = ae[ 3 ], a13 = ae[ 6 ];\n\t\tconst a21 = ae[ 1 ], a22 = ae[ 4 ], a23 = ae[ 7 ];\n\t\tconst a31 = ae[ 2 ], a32 = ae[ 5 ], a33 = ae[ 8 ];\n\n\t\tconst b11 = be[ 0 ], b12 = be[ 3 ], b13 = be[ 6 ];\n\t\tconst b21 = be[ 1 ], b22 = be[ 4 ], b23 = be[ 7 ];\n\t\tconst b31 = be[ 2 ], b32 = be[ 5 ], b33 = be[ 8 ];\n\n\t\tte[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31;\n\t\tte[ 3 ] = a11 * b12 + a12 * b22 + a13 * b32;\n\t\tte[ 6 ] = a11 * b13 + a12 * b23 + a13 * b33;\n\n\t\tte[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31;\n\t\tte[ 4 ] = a21 * b12 + a22 * b22 + a23 * b32;\n\t\tte[ 7 ] = a21 * b13 + a22 * b23 + a23 * b33;\n\n\t\tte[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31;\n\t\tte[ 5 ] = a31 * b12 + a32 * b22 + a33 * b32;\n\t\tte[ 8 ] = a31 * b13 + a32 * b23 + a33 * b33;\n\n\t\treturn this;\n\n\t}\n\n\tmultiplyScalar( s ) {\n\n\t\tconst te = this.elements;\n\n\t\tte[ 0 ] *= s; te[ 3 ] *= s; te[ 6 ] *= s;\n\t\tte[ 1 ] *= s; te[ 4 ] *= s; te[ 7 ] *= s;\n\t\tte[ 2 ] *= s; te[ 5 ] *= s; te[ 8 ] *= s;\n\n\t\treturn this;\n\n\t}\n\n\tdeterminant() {\n\n\t\tconst te = this.elements;\n\n\t\tconst a = te[ 0 ], b = te[ 1 ], c = te[ 2 ],\n\t\t\td = te[ 3 ], e = te[ 4 ], f = te[ 5 ],\n\t\t\tg = te[ 6 ], h = te[ 7 ], i = te[ 8 ];\n\n\t\treturn a * e * i - a * f * h - b * d * i + b * f * g + c * d * h - c * e * g;\n\n\t}\n\n\tinvert() {\n\n\t\tconst te = this.elements,\n\n\t\t\tn11 = te[ 0 ], n21 = te[ 1 ], n31 = te[ 2 ],\n\t\t\tn12 = te[ 3 ], n22 = te[ 4 ], n32 = te[ 5 ],\n\t\t\tn13 = te[ 6 ], n23 = te[ 7 ], n33 = te[ 8 ],\n\n\t\t\tt11 = n33 * n22 - n32 * n23,\n\t\t\tt12 = n32 * n13 - n33 * n12,\n\t\t\tt13 = n23 * n12 - n22 * n13,\n\n\t\t\tdet = n11 * t11 + n21 * t12 + n31 * t13;\n\n\t\tif ( det === 0 ) return this.set( 0, 0, 0, 0, 0, 0, 0, 0, 0 );\n\n\t\tconst detInv = 1 / det;\n\n\t\tte[ 0 ] = t11 * detInv;\n\t\tte[ 1 ] = ( n31 * n23 - n33 * n21 ) * detInv;\n\t\tte[ 2 ] = ( n32 * n21 - n31 * n22 ) * detInv;\n\n\t\tte[ 3 ] = t12 * detInv;\n\t\tte[ 4 ] = ( n33 * n11 - n31 * n13 ) * detInv;\n\t\tte[ 5 ] = ( n31 * n12 - n32 * n11 ) * detInv;\n\n\t\tte[ 6 ] = t13 * detInv;\n\t\tte[ 7 ] = ( n21 * n13 - n23 * n11 ) * detInv;\n\t\tte[ 8 ] = ( n22 * n11 - n21 * n12 ) * detInv;\n\n\t\treturn this;\n\n\t}\n\n\ttranspose() {\n\n\t\tlet tmp;\n\t\tconst m = this.elements;\n\n\t\ttmp = m[ 1 ]; m[ 1 ] = m[ 3 ]; m[ 3 ] = tmp;\n\t\ttmp = m[ 2 ]; m[ 2 ] = m[ 6 ]; m[ 6 ] = tmp;\n\t\ttmp = m[ 5 ]; m[ 5 ] = m[ 7 ]; m[ 7 ] = tmp;\n\n\t\treturn this;\n\n\t}\n\n\tgetNormalMatrix( matrix4 ) {\n\n\t\treturn this.setFromMatrix4( matrix4 ).copy( this ).invert().transpose();\n\n\t}\n\n\ttransposeIntoArray( r ) {\n\n\t\tconst m = this.elements;\n\n\t\tr[ 0 ] = m[ 0 ];\n\t\tr[ 1 ] = m[ 3 ];\n\t\tr[ 2 ] = m[ 6 ];\n\t\tr[ 3 ] = m[ 1 ];\n\t\tr[ 4 ] = m[ 4 ];\n\t\tr[ 5 ] = m[ 7 ];\n\t\tr[ 6 ] = m[ 2 ];\n\t\tr[ 7 ] = m[ 5 ];\n\t\tr[ 8 ] = m[ 8 ];\n\n\t\treturn this;\n\n\t}\n\n\tsetUvTransform( tx, ty, sx, sy, rotation, cx, cy ) {\n\n\t\tconst c = Math.cos( rotation );\n\t\tconst s = Math.sin( rotation );\n\n\t\tthis.set(\n\t\t\tsx * c, sx * s, - sx * ( c * cx + s * cy ) + cx + tx,\n\t\t\t- sy * s, sy * c, - sy * ( - s * cx + c * cy ) + cy + ty,\n\t\t\t0, 0, 1\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tscale( sx, sy ) {\n\n\t\tconst te = this.elements;\n\n\t\tte[ 0 ] *= sx; te[ 3 ] *= sx; te[ 6 ] *= sx;\n\t\tte[ 1 ] *= sy; te[ 4 ] *= sy; te[ 7 ] *= sy;\n\n\t\treturn this;\n\n\t}\n\n\trotate( theta ) {\n\n\t\tconst c = Math.cos( theta );\n\t\tconst s = Math.sin( theta );\n\n\t\tconst te = this.elements;\n\n\t\tconst a11 = te[ 0 ], a12 = te[ 3 ], a13 = te[ 6 ];\n\t\tconst a21 = te[ 1 ], a22 = te[ 4 ], a23 = te[ 7 ];\n\n\t\tte[ 0 ] = c * a11 + s * a21;\n\t\tte[ 3 ] = c * a12 + s * a22;\n\t\tte[ 6 ] = c * a13 + s * a23;\n\n\t\tte[ 1 ] = - s * a11 + c * a21;\n\t\tte[ 4 ] = - s * a12 + c * a22;\n\t\tte[ 7 ] = - s * a13 + c * a23;\n\n\t\treturn this;\n\n\t}\n\n\ttranslate( tx, ty ) {\n\n\t\tconst te = this.elements;\n\n\t\tte[ 0 ] += tx * te[ 2 ]; te[ 3 ] += tx * te[ 5 ]; te[ 6 ] += tx * te[ 8 ];\n\t\tte[ 1 ] += ty * te[ 2 ]; te[ 4 ] += ty * te[ 5 ]; te[ 7 ] += ty * te[ 8 ];\n\n\t\treturn this;\n\n\t}\n\n\tequals( matrix ) {\n\n\t\tconst te = this.elements;\n\t\tconst me = matrix.elements;\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tif ( te[ i ] !== me[ i ] ) return false;\n\n\t\t}\n\n\t\treturn true;\n\n\t}\n\n\tfromArray( array, offset = 0 ) {\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tthis.elements[ i ] = array[ i + offset ];\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tconst te = this.elements;\n\n\t\tarray[ offset ] = te[ 0 ];\n\t\tarray[ offset + 1 ] = te[ 1 ];\n\t\tarray[ offset + 2 ] = te[ 2 ];\n\n\t\tarray[ offset + 3 ] = te[ 3 ];\n\t\tarray[ offset + 4 ] = te[ 4 ];\n\t\tarray[ offset + 5 ] = te[ 5 ];\n\n\t\tarray[ offset + 6 ] = te[ 6 ];\n\t\tarray[ offset + 7 ] = te[ 7 ];\n\t\tarray[ offset + 8 ] = te[ 8 ];\n\n\t\treturn array;\n\n\t}\n\n}\n\nlet _canvas;\n\nconst ImageUtils = {\n\n\tgetDataURL: function ( image ) {\n\n\t\tif ( /^data:/i.test( image.src ) ) {\n\n\t\t\treturn image.src;\n\n\t\t}\n\n\t\tif ( typeof HTMLCanvasElement == 'undefined' ) {\n\n\t\t\treturn image.src;\n\n\t\t}\n\n\t\tlet canvas;\n\n\t\tif ( image instanceof HTMLCanvasElement ) {\n\n\t\t\tcanvas = image;\n\n\t\t} else {\n\n\t\t\tif ( _canvas === undefined ) _canvas = document.createElementNS( 'http://www.w3.org/1999/xhtml', 'canvas' );\n\n\t\t\t_canvas.width = image.width;\n\t\t\t_canvas.height = image.height;\n\n\t\t\tconst context = _canvas.getContext( '2d' );\n\n\t\t\tif ( image instanceof ImageData ) {\n\n\t\t\t\tcontext.putImageData( image, 0, 0 );\n\n\t\t\t} else {\n\n\t\t\t\tcontext.drawImage( image, 0, 0, image.width, image.height );\n\n\t\t\t}\n\n\t\t\tcanvas = _canvas;\n\n\t\t}\n\n\t\tif ( canvas.width > 2048 || canvas.height > 2048 ) {\n\n\t\t\treturn canvas.toDataURL( 'image/jpeg', 0.6 );\n\n\t\t} else {\n\n\t\t\treturn canvas.toDataURL( 'image/png' );\n\n\t\t}\n\n\t}\n\n};\n\nlet textureId = 0;\n\nfunction Texture( image = Texture.DEFAULT_IMAGE, mapping = Texture.DEFAULT_MAPPING, wrapS = ClampToEdgeWrapping, wrapT = ClampToEdgeWrapping, magFilter = LinearFilter, minFilter = LinearMipmapLinearFilter, format = RGBAFormat, type = UnsignedByteType, anisotropy = 1, encoding = LinearEncoding ) {\n\n\tObject.defineProperty( this, 'id', { value: textureId ++ } );\n\n\tthis.uuid = MathUtils.generateUUID();\n\n\tthis.name = '';\n\n\tthis.image = image;\n\tthis.mipmaps = [];\n\n\tthis.mapping = mapping;\n\n\tthis.wrapS = wrapS;\n\tthis.wrapT = wrapT;\n\n\tthis.magFilter = magFilter;\n\tthis.minFilter = minFilter;\n\n\tthis.anisotropy = anisotropy;\n\n\tthis.format = format;\n\tthis.internalFormat = null;\n\tthis.type = type;\n\n\tthis.offset = new Vector2( 0, 0 );\n\tthis.repeat = new Vector2( 1, 1 );\n\tthis.center = new Vector2( 0, 0 );\n\tthis.rotation = 0;\n\n\tthis.matrixAutoUpdate = true;\n\tthis.matrix = new Matrix3();\n\n\tthis.generateMipmaps = true;\n\tthis.premultiplyAlpha = false;\n\tthis.flipY = true;\n\tthis.unpackAlignment = 4;\t// valid values: 1, 2, 4, 8 (see http://www.khronos.org/opengles/sdk/docs/man/xhtml/glPixelStorei.xml)\n\n\t// Values of encoding !== THREE.LinearEncoding only supported on map, envMap and emissiveMap.\n\t//\n\t// Also changing the encoding after already used by a Material will not automatically make the Material\n\t// update. You need to explicitly call Material.needsUpdate to trigger it to recompile.\n\tthis.encoding = encoding;\n\n\tthis.version = 0;\n\tthis.onUpdate = null;\n\n}\n\nTexture.DEFAULT_IMAGE = undefined;\nTexture.DEFAULT_MAPPING = UVMapping;\n\nTexture.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {\n\n\tconstructor: Texture,\n\n\tisTexture: true,\n\n\tupdateMatrix: function () {\n\n\t\tthis.matrix.setUvTransform( this.offset.x, this.offset.y, this.repeat.x, this.repeat.y, this.rotation, this.center.x, this.center.y );\n\n\t},\n\n\tclone: function () {\n\n\t\treturn new this.constructor().copy( this );\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\tthis.name = source.name;\n\n\t\tthis.image = source.image;\n\t\tthis.mipmaps = source.mipmaps.slice( 0 );\n\n\t\tthis.mapping = source.mapping;\n\n\t\tthis.wrapS = source.wrapS;\n\t\tthis.wrapT = source.wrapT;\n\n\t\tthis.magFilter = source.magFilter;\n\t\tthis.minFilter = source.minFilter;\n\n\t\tthis.anisotropy = source.anisotropy;\n\n\t\tthis.format = source.format;\n\t\tthis.internalFormat = source.internalFormat;\n\t\tthis.type = source.type;\n\n\t\tthis.offset.copy( source.offset );\n\t\tthis.repeat.copy( source.repeat );\n\t\tthis.center.copy( source.center );\n\t\tthis.rotation = source.rotation;\n\n\t\tthis.matrixAutoUpdate = source.matrixAutoUpdate;\n\t\tthis.matrix.copy( source.matrix );\n\n\t\tthis.generateMipmaps = source.generateMipmaps;\n\t\tthis.premultiplyAlpha = source.premultiplyAlpha;\n\t\tthis.flipY = source.flipY;\n\t\tthis.unpackAlignment = source.unpackAlignment;\n\t\tthis.encoding = source.encoding;\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function ( meta ) {\n\n\t\tconst isRootObject = ( meta === undefined || typeof meta === 'string' );\n\n\t\tif ( ! isRootObject && meta.textures[ this.uuid ] !== undefined ) {\n\n\t\t\treturn meta.textures[ this.uuid ];\n\n\t\t}\n\n\t\tconst output = {\n\n\t\t\tmetadata: {\n\t\t\t\tversion: 4.5,\n\t\t\t\ttype: 'Texture',\n\t\t\t\tgenerator: 'Texture.toJSON'\n\t\t\t},\n\n\t\t\tuuid: this.uuid,\n\t\t\tname: this.name,\n\n\t\t\tmapping: this.mapping,\n\n\t\t\trepeat: [ this.repeat.x, this.repeat.y ],\n\t\t\toffset: [ this.offset.x, this.offset.y ],\n\t\t\tcenter: [ this.center.x, this.center.y ],\n\t\t\trotation: this.rotation,\n\n\t\t\twrap: [ this.wrapS, this.wrapT ],\n\n\t\t\tformat: this.format,\n\t\t\ttype: this.type,\n\t\t\tencoding: this.encoding,\n\n\t\t\tminFilter: this.minFilter,\n\t\t\tmagFilter: this.magFilter,\n\t\t\tanisotropy: this.anisotropy,\n\n\t\t\tflipY: this.flipY,\n\n\t\t\tpremultiplyAlpha: this.premultiplyAlpha,\n\t\t\tunpackAlignment: this.unpackAlignment\n\n\t\t};\n\n\t\tif ( this.image !== undefined ) {\n\n\t\t\t// TODO: Move to THREE.Image\n\n\t\t\tconst image = this.image;\n\n\t\t\tif ( image.uuid === undefined ) {\n\n\t\t\t\timage.uuid = MathUtils.generateUUID(); // UGH\n\n\t\t\t}\n\n\t\t\tif ( ! isRootObject && meta.images[ image.uuid ] === undefined ) {\n\n\t\t\t\tlet url;\n\n\t\t\t\tif ( Array.isArray( image ) ) {\n\n\t\t\t\t\t// process array of images e.g. CubeTexture\n\n\t\t\t\t\turl = [];\n\n\t\t\t\t\tfor ( let i = 0, l = image.length; i < l; i ++ ) {\n\n\t\t\t\t\t\t// check cube texture with data textures\n\n\t\t\t\t\t\tif ( image[ i ].isDataTexture ) {\n\n\t\t\t\t\t\t\turl.push( serializeImage( image[ i ].image ) );\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\turl.push( serializeImage( image[ i ] ) );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// process single image\n\n\t\t\t\t\turl = serializeImage( image );\n\n\t\t\t\t}\n\n\t\t\t\tmeta.images[ image.uuid ] = {\n\t\t\t\t\tuuid: image.uuid,\n\t\t\t\t\turl: url\n\t\t\t\t};\n\n\t\t\t}\n\n\t\t\toutput.image = image.uuid;\n\n\t\t}\n\n\t\tif ( ! isRootObject ) {\n\n\t\t\tmeta.textures[ this.uuid ] = output;\n\n\t\t}\n\n\t\treturn output;\n\n\t},\n\n\tdispose: function () {\n\n\t\tthis.dispatchEvent( { type: 'dispose' } );\n\n\t},\n\n\ttransformUv: function ( uv ) {\n\n\t\tif ( this.mapping !== UVMapping ) return uv;\n\n\t\tuv.applyMatrix3( this.matrix );\n\n\t\tif ( uv.x < 0 || uv.x > 1 ) {\n\n\t\t\tswitch ( this.wrapS ) {\n\n\t\t\t\tcase RepeatWrapping:\n\n\t\t\t\t\tuv.x = uv.x - Math.floor( uv.x );\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase ClampToEdgeWrapping:\n\n\t\t\t\t\tuv.x = uv.x < 0 ? 0 : 1;\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase MirroredRepeatWrapping:\n\n\t\t\t\t\tif ( Math.abs( Math.floor( uv.x ) % 2 ) === 1 ) {\n\n\t\t\t\t\t\tuv.x = Math.ceil( uv.x ) - uv.x;\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tuv.x = uv.x - Math.floor( uv.x );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( uv.y < 0 || uv.y > 1 ) {\n\n\t\t\tswitch ( this.wrapT ) {\n\n\t\t\t\tcase RepeatWrapping:\n\n\t\t\t\t\tuv.y = uv.y - Math.floor( uv.y );\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase ClampToEdgeWrapping:\n\n\t\t\t\t\tuv.y = uv.y < 0 ? 0 : 1;\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase MirroredRepeatWrapping:\n\n\t\t\t\t\tif ( Math.abs( Math.floor( uv.y ) % 2 ) === 1 ) {\n\n\t\t\t\t\t\tuv.y = Math.ceil( uv.y ) - uv.y;\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tuv.y = uv.y - Math.floor( uv.y );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( this.flipY ) {\n\n\t\t\tuv.y = 1 - uv.y;\n\n\t\t}\n\n\t\treturn uv;\n\n\t}\n\n} );\n\nObject.defineProperty( Texture.prototype, 'needsUpdate', {\n\n\tset: function ( value ) {\n\n\t\tif ( value === true ) this.version ++;\n\n\t}\n\n} );\n\nfunction serializeImage( image ) {\n\n\tif ( ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) ||\n\t\t( typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement ) ||\n\t\t( typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap ) ) {\n\n\t\t// default images\n\n\t\treturn ImageUtils.getDataURL( image );\n\n\t} else {\n\n\t\tif ( image.data ) {\n\n\t\t\t// images of DataTexture\n\n\t\t\treturn {\n\t\t\t\tdata: Array.prototype.slice.call( image.data ),\n\t\t\t\twidth: image.width,\n\t\t\t\theight: image.height,\n\t\t\t\ttype: image.data.constructor.name\n\t\t\t};\n\n\t\t} else {\n\n\t\t\tconsole.warn( 'THREE.Texture: Unable to serialize Texture.' );\n\t\t\treturn {};\n\n\t\t}\n\n\t}\n\n}\n\nclass Vector4 {\n\n\tconstructor( x = 0, y = 0, z = 0, w = 1 ) {\n\n\t\tObject.defineProperty( this, 'isVector4', { value: true } );\n\n\t\tthis.x = x;\n\t\tthis.y = y;\n\t\tthis.z = z;\n\t\tthis.w = w;\n\n\t}\n\n\tget width() {\n\n\t\treturn this.z;\n\n\t}\n\n\tset width( value ) {\n\n\t\tthis.z = value;\n\n\t}\n\n\tget height() {\n\n\t\treturn this.w;\n\n\t}\n\n\tset height( value ) {\n\n\t\tthis.w = value;\n\n\t}\n\n\tset( x, y, z, w ) {\n\n\t\tthis.x = x;\n\t\tthis.y = y;\n\t\tthis.z = z;\n\t\tthis.w = w;\n\n\t\treturn this;\n\n\t}\n\n\tsetScalar( scalar ) {\n\n\t\tthis.x = scalar;\n\t\tthis.y = scalar;\n\t\tthis.z = scalar;\n\t\tthis.w = scalar;\n\n\t\treturn this;\n\n\t}\n\n\tsetX( x ) {\n\n\t\tthis.x = x;\n\n\t\treturn this;\n\n\t}\n\n\tsetY( y ) {\n\n\t\tthis.y = y;\n\n\t\treturn this;\n\n\t}\n\n\tsetZ( z ) {\n\n\t\tthis.z = z;\n\n\t\treturn this;\n\n\t}\n\n\tsetW( w ) {\n\n\t\tthis.w = w;\n\n\t\treturn this;\n\n\t}\n\n\tsetComponent( index, value ) {\n\n\t\tswitch ( index ) {\n\n\t\t\tcase 0: this.x = value; break;\n\t\t\tcase 1: this.y = value; break;\n\t\t\tcase 2: this.z = value; break;\n\t\t\tcase 3: this.w = value; break;\n\t\t\tdefault: throw new Error( 'index is out of range: ' + index );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tgetComponent( index ) {\n\n\t\tswitch ( index ) {\n\n\t\t\tcase 0: return this.x;\n\t\t\tcase 1: return this.y;\n\t\t\tcase 2: return this.z;\n\t\t\tcase 3: return this.w;\n\t\t\tdefault: throw new Error( 'index is out of range: ' + index );\n\n\t\t}\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor( this.x, this.y, this.z, this.w );\n\n\t}\n\n\tcopy( v ) {\n\n\t\tthis.x = v.x;\n\t\tthis.y = v.y;\n\t\tthis.z = v.z;\n\t\tthis.w = ( v.w !== undefined ) ? v.w : 1;\n\n\t\treturn this;\n\n\t}\n\n\tadd( v, w ) {\n\n\t\tif ( w !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Vector4: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );\n\t\t\treturn this.addVectors( v, w );\n\n\t\t}\n\n\t\tthis.x += v.x;\n\t\tthis.y += v.y;\n\t\tthis.z += v.z;\n\t\tthis.w += v.w;\n\n\t\treturn this;\n\n\t}\n\n\taddScalar( s ) {\n\n\t\tthis.x += s;\n\t\tthis.y += s;\n\t\tthis.z += s;\n\t\tthis.w += s;\n\n\t\treturn this;\n\n\t}\n\n\taddVectors( a, b ) {\n\n\t\tthis.x = a.x + b.x;\n\t\tthis.y = a.y + b.y;\n\t\tthis.z = a.z + b.z;\n\t\tthis.w = a.w + b.w;\n\n\t\treturn this;\n\n\t}\n\n\taddScaledVector( v, s ) {\n\n\t\tthis.x += v.x * s;\n\t\tthis.y += v.y * s;\n\t\tthis.z += v.z * s;\n\t\tthis.w += v.w * s;\n\n\t\treturn this;\n\n\t}\n\n\tsub( v, w ) {\n\n\t\tif ( w !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Vector4: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );\n\t\t\treturn this.subVectors( v, w );\n\n\t\t}\n\n\t\tthis.x -= v.x;\n\t\tthis.y -= v.y;\n\t\tthis.z -= v.z;\n\t\tthis.w -= v.w;\n\n\t\treturn this;\n\n\t}\n\n\tsubScalar( s ) {\n\n\t\tthis.x -= s;\n\t\tthis.y -= s;\n\t\tthis.z -= s;\n\t\tthis.w -= s;\n\n\t\treturn this;\n\n\t}\n\n\tsubVectors( a, b ) {\n\n\t\tthis.x = a.x - b.x;\n\t\tthis.y = a.y - b.y;\n\t\tthis.z = a.z - b.z;\n\t\tthis.w = a.w - b.w;\n\n\t\treturn this;\n\n\t}\n\n\tmultiplyScalar( scalar ) {\n\n\t\tthis.x *= scalar;\n\t\tthis.y *= scalar;\n\t\tthis.z *= scalar;\n\t\tthis.w *= scalar;\n\n\t\treturn this;\n\n\t}\n\n\tapplyMatrix4( m ) {\n\n\t\tconst x = this.x, y = this.y, z = this.z, w = this.w;\n\t\tconst e = m.elements;\n\n\t\tthis.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z + e[ 12 ] * w;\n\t\tthis.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z + e[ 13 ] * w;\n\t\tthis.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] * w;\n\t\tthis.w = e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] * w;\n\n\t\treturn this;\n\n\t}\n\n\tdivideScalar( scalar ) {\n\n\t\treturn this.multiplyScalar( 1 / scalar );\n\n\t}\n\n\tsetAxisAngleFromQuaternion( q ) {\n\n\t\t// http://www.euclideanspace.com/maths/geometry/rotations/conversions/quaternionToAngle/index.htm\n\n\t\t// q is assumed to be normalized\n\n\t\tthis.w = 2 * Math.acos( q.w );\n\n\t\tconst s = Math.sqrt( 1 - q.w * q.w );\n\n\t\tif ( s < 0.0001 ) {\n\n\t\t\tthis.x = 1;\n\t\t\tthis.y = 0;\n\t\t\tthis.z = 0;\n\n\t\t} else {\n\n\t\t\tthis.x = q.x / s;\n\t\t\tthis.y = q.y / s;\n\t\t\tthis.z = q.z / s;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetAxisAngleFromRotationMatrix( m ) {\n\n\t\t// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToAngle/index.htm\n\n\t\t// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)\n\n\t\tlet angle, x, y, z; // variables for result\n\t\tconst epsilon = 0.01,\t\t// margin to allow for rounding errors\n\t\t\tepsilon2 = 0.1,\t\t// margin to distinguish between 0 and 180 degrees\n\n\t\t\tte = m.elements,\n\n\t\t\tm11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],\n\t\t\tm21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],\n\t\t\tm31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];\n\n\t\tif ( ( Math.abs( m12 - m21 ) < epsilon ) &&\n\t\t     ( Math.abs( m13 - m31 ) < epsilon ) &&\n\t\t     ( Math.abs( m23 - m32 ) < epsilon ) ) {\n\n\t\t\t// singularity found\n\t\t\t// first check for identity matrix which must have +1 for all terms\n\t\t\t// in leading diagonal and zero in other terms\n\n\t\t\tif ( ( Math.abs( m12 + m21 ) < epsilon2 ) &&\n\t\t\t     ( Math.abs( m13 + m31 ) < epsilon2 ) &&\n\t\t\t     ( Math.abs( m23 + m32 ) < epsilon2 ) &&\n\t\t\t     ( Math.abs( m11 + m22 + m33 - 3 ) < epsilon2 ) ) {\n\n\t\t\t\t// this singularity is identity matrix so angle = 0\n\n\t\t\t\tthis.set( 1, 0, 0, 0 );\n\n\t\t\t\treturn this; // zero angle, arbitrary axis\n\n\t\t\t}\n\n\t\t\t// otherwise this singularity is angle = 180\n\n\t\t\tangle = Math.PI;\n\n\t\t\tconst xx = ( m11 + 1 ) / 2;\n\t\t\tconst yy = ( m22 + 1 ) / 2;\n\t\t\tconst zz = ( m33 + 1 ) / 2;\n\t\t\tconst xy = ( m12 + m21 ) / 4;\n\t\t\tconst xz = ( m13 + m31 ) / 4;\n\t\t\tconst yz = ( m23 + m32 ) / 4;\n\n\t\t\tif ( ( xx > yy ) && ( xx > zz ) ) {\n\n\t\t\t\t// m11 is the largest diagonal term\n\n\t\t\t\tif ( xx < epsilon ) {\n\n\t\t\t\t\tx = 0;\n\t\t\t\t\ty = 0.707106781;\n\t\t\t\t\tz = 0.707106781;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tx = Math.sqrt( xx );\n\t\t\t\t\ty = xy / x;\n\t\t\t\t\tz = xz / x;\n\n\t\t\t\t}\n\n\t\t\t} else if ( yy > zz ) {\n\n\t\t\t\t// m22 is the largest diagonal term\n\n\t\t\t\tif ( yy < epsilon ) {\n\n\t\t\t\t\tx = 0.707106781;\n\t\t\t\t\ty = 0;\n\t\t\t\t\tz = 0.707106781;\n\n\t\t\t\t} else {\n\n\t\t\t\t\ty = Math.sqrt( yy );\n\t\t\t\t\tx = xy / y;\n\t\t\t\t\tz = yz / y;\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\t// m33 is the largest diagonal term so base result on this\n\n\t\t\t\tif ( zz < epsilon ) {\n\n\t\t\t\t\tx = 0.707106781;\n\t\t\t\t\ty = 0.707106781;\n\t\t\t\t\tz = 0;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tz = Math.sqrt( zz );\n\t\t\t\t\tx = xz / z;\n\t\t\t\t\ty = yz / z;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tthis.set( x, y, z, angle );\n\n\t\t\treturn this; // return 180 deg rotation\n\n\t\t}\n\n\t\t// as we have reached here there are no singularities so we can handle normally\n\n\t\tlet s = Math.sqrt( ( m32 - m23 ) * ( m32 - m23 ) +\n\t\t\t( m13 - m31 ) * ( m13 - m31 ) +\n\t\t\t( m21 - m12 ) * ( m21 - m12 ) ); // used to normalize\n\n\t\tif ( Math.abs( s ) < 0.001 ) s = 1;\n\n\t\t// prevent divide by zero, should not happen if matrix is orthogonal and should be\n\t\t// caught by singularity test above, but I've left it in just in case\n\n\t\tthis.x = ( m32 - m23 ) / s;\n\t\tthis.y = ( m13 - m31 ) / s;\n\t\tthis.z = ( m21 - m12 ) / s;\n\t\tthis.w = Math.acos( ( m11 + m22 + m33 - 1 ) / 2 );\n\n\t\treturn this;\n\n\t}\n\n\tmin( v ) {\n\n\t\tthis.x = Math.min( this.x, v.x );\n\t\tthis.y = Math.min( this.y, v.y );\n\t\tthis.z = Math.min( this.z, v.z );\n\t\tthis.w = Math.min( this.w, v.w );\n\n\t\treturn this;\n\n\t}\n\n\tmax( v ) {\n\n\t\tthis.x = Math.max( this.x, v.x );\n\t\tthis.y = Math.max( this.y, v.y );\n\t\tthis.z = Math.max( this.z, v.z );\n\t\tthis.w = Math.max( this.w, v.w );\n\n\t\treturn this;\n\n\t}\n\n\tclamp( min, max ) {\n\n\t\t// assumes min < max, componentwise\n\n\t\tthis.x = Math.max( min.x, Math.min( max.x, this.x ) );\n\t\tthis.y = Math.max( min.y, Math.min( max.y, this.y ) );\n\t\tthis.z = Math.max( min.z, Math.min( max.z, this.z ) );\n\t\tthis.w = Math.max( min.w, Math.min( max.w, this.w ) );\n\n\t\treturn this;\n\n\t}\n\n\tclampScalar( minVal, maxVal ) {\n\n\t\tthis.x = Math.max( minVal, Math.min( maxVal, this.x ) );\n\t\tthis.y = Math.max( minVal, Math.min( maxVal, this.y ) );\n\t\tthis.z = Math.max( minVal, Math.min( maxVal, this.z ) );\n\t\tthis.w = Math.max( minVal, Math.min( maxVal, this.w ) );\n\n\t\treturn this;\n\n\t}\n\n\tclampLength( min, max ) {\n\n\t\tconst length = this.length();\n\n\t\treturn this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );\n\n\t}\n\n\tfloor() {\n\n\t\tthis.x = Math.floor( this.x );\n\t\tthis.y = Math.floor( this.y );\n\t\tthis.z = Math.floor( this.z );\n\t\tthis.w = Math.floor( this.w );\n\n\t\treturn this;\n\n\t}\n\n\tceil() {\n\n\t\tthis.x = Math.ceil( this.x );\n\t\tthis.y = Math.ceil( this.y );\n\t\tthis.z = Math.ceil( this.z );\n\t\tthis.w = Math.ceil( this.w );\n\n\t\treturn this;\n\n\t}\n\n\tround() {\n\n\t\tthis.x = Math.round( this.x );\n\t\tthis.y = Math.round( this.y );\n\t\tthis.z = Math.round( this.z );\n\t\tthis.w = Math.round( this.w );\n\n\t\treturn this;\n\n\t}\n\n\troundToZero() {\n\n\t\tthis.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );\n\t\tthis.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );\n\t\tthis.z = ( this.z < 0 ) ? Math.ceil( this.z ) : Math.floor( this.z );\n\t\tthis.w = ( this.w < 0 ) ? Math.ceil( this.w ) : Math.floor( this.w );\n\n\t\treturn this;\n\n\t}\n\n\tnegate() {\n\n\t\tthis.x = - this.x;\n\t\tthis.y = - this.y;\n\t\tthis.z = - this.z;\n\t\tthis.w = - this.w;\n\n\t\treturn this;\n\n\t}\n\n\tdot( v ) {\n\n\t\treturn this.x * v.x + this.y * v.y + this.z * v.z + this.w * v.w;\n\n\t}\n\n\tlengthSq() {\n\n\t\treturn this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w;\n\n\t}\n\n\tlength() {\n\n\t\treturn Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w );\n\n\t}\n\n\tmanhattanLength() {\n\n\t\treturn Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z ) + Math.abs( this.w );\n\n\t}\n\n\tnormalize() {\n\n\t\treturn this.divideScalar( this.length() || 1 );\n\n\t}\n\n\tsetLength( length ) {\n\n\t\treturn this.normalize().multiplyScalar( length );\n\n\t}\n\n\tlerp( v, alpha ) {\n\n\t\tthis.x += ( v.x - this.x ) * alpha;\n\t\tthis.y += ( v.y - this.y ) * alpha;\n\t\tthis.z += ( v.z - this.z ) * alpha;\n\t\tthis.w += ( v.w - this.w ) * alpha;\n\n\t\treturn this;\n\n\t}\n\n\tlerpVectors( v1, v2, alpha ) {\n\n\t\tthis.x = v1.x + ( v2.x - v1.x ) * alpha;\n\t\tthis.y = v1.y + ( v2.y - v1.y ) * alpha;\n\t\tthis.z = v1.z + ( v2.z - v1.z ) * alpha;\n\t\tthis.w = v1.w + ( v2.w - v1.w ) * alpha;\n\n\t\treturn this;\n\n\t}\n\n\tequals( v ) {\n\n\t\treturn ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) && ( v.w === this.w ) );\n\n\t}\n\n\tfromArray( array, offset = 0 ) {\n\n\t\tthis.x = array[ offset ];\n\t\tthis.y = array[ offset + 1 ];\n\t\tthis.z = array[ offset + 2 ];\n\t\tthis.w = array[ offset + 3 ];\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tarray[ offset ] = this.x;\n\t\tarray[ offset + 1 ] = this.y;\n\t\tarray[ offset + 2 ] = this.z;\n\t\tarray[ offset + 3 ] = this.w;\n\n\t\treturn array;\n\n\t}\n\n\tfromBufferAttribute( attribute, index, offset ) {\n\n\t\tif ( offset !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Vector4: offset has been removed from .fromBufferAttribute().' );\n\n\t\t}\n\n\t\tthis.x = attribute.getX( index );\n\t\tthis.y = attribute.getY( index );\n\t\tthis.z = attribute.getZ( index );\n\t\tthis.w = attribute.getW( index );\n\n\t\treturn this;\n\n\t}\n\n\trandom() {\n\n\t\tthis.x = Math.random();\n\t\tthis.y = Math.random();\n\t\tthis.z = Math.random();\n\t\tthis.w = Math.random();\n\n\t\treturn this;\n\n\t}\n\n}\n\n/*\n In options, we can specify:\n * Texture parameters for an auto-generated target texture\n * depthBuffer/stencilBuffer: Booleans to indicate if we should generate these buffers\n*/\nfunction WebGLRenderTarget( width, height, options ) {\n\n\tthis.width = width;\n\tthis.height = height;\n\n\tthis.scissor = new Vector4( 0, 0, width, height );\n\tthis.scissorTest = false;\n\n\tthis.viewport = new Vector4( 0, 0, width, height );\n\n\toptions = options || {};\n\n\tthis.texture = new Texture( undefined, options.mapping, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.encoding );\n\n\tthis.texture.image = {};\n\tthis.texture.image.width = width;\n\tthis.texture.image.height = height;\n\n\tthis.texture.generateMipmaps = options.generateMipmaps !== undefined ? options.generateMipmaps : false;\n\tthis.texture.minFilter = options.minFilter !== undefined ? options.minFilter : LinearFilter;\n\n\tthis.depthBuffer = options.depthBuffer !== undefined ? options.depthBuffer : true;\n\tthis.stencilBuffer = options.stencilBuffer !== undefined ? options.stencilBuffer : false;\n\tthis.depthTexture = options.depthTexture !== undefined ? options.depthTexture : null;\n\n}\n\nWebGLRenderTarget.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {\n\n\tconstructor: WebGLRenderTarget,\n\n\tisWebGLRenderTarget: true,\n\n\tsetSize: function ( width, height ) {\n\n\t\tif ( this.width !== width || this.height !== height ) {\n\n\t\t\tthis.width = width;\n\t\t\tthis.height = height;\n\n\t\t\tthis.texture.image.width = width;\n\t\t\tthis.texture.image.height = height;\n\n\t\t\tthis.dispose();\n\n\t\t}\n\n\t\tthis.viewport.set( 0, 0, width, height );\n\t\tthis.scissor.set( 0, 0, width, height );\n\n\t},\n\n\tclone: function () {\n\n\t\treturn new this.constructor().copy( this );\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\tthis.width = source.width;\n\t\tthis.height = source.height;\n\n\t\tthis.viewport.copy( source.viewport );\n\n\t\tthis.texture = source.texture.clone();\n\n\t\tthis.depthBuffer = source.depthBuffer;\n\t\tthis.stencilBuffer = source.stencilBuffer;\n\t\tthis.depthTexture = source.depthTexture;\n\n\t\treturn this;\n\n\t},\n\n\tdispose: function () {\n\n\t\tthis.dispatchEvent( { type: 'dispose' } );\n\n\t}\n\n} );\n\nfunction WebGLMultisampleRenderTarget( width, height, options ) {\n\n\tWebGLRenderTarget.call( this, width, height, options );\n\n\tthis.samples = 4;\n\n}\n\nWebGLMultisampleRenderTarget.prototype = Object.assign( Object.create( WebGLRenderTarget.prototype ), {\n\n\tconstructor: WebGLMultisampleRenderTarget,\n\n\tisWebGLMultisampleRenderTarget: true,\n\n\tcopy: function ( source ) {\n\n\t\tWebGLRenderTarget.prototype.copy.call( this, source );\n\n\t\tthis.samples = source.samples;\n\n\t\treturn this;\n\n\t}\n\n} );\n\nclass Quaternion {\n\n\tconstructor( x = 0, y = 0, z = 0, w = 1 ) {\n\n\t\tObject.defineProperty( this, 'isQuaternion', { value: true } );\n\n\t\tthis._x = x;\n\t\tthis._y = y;\n\t\tthis._z = z;\n\t\tthis._w = w;\n\n\t}\n\n\tstatic slerp( qa, qb, qm, t ) {\n\n\t\treturn qm.copy( qa ).slerp( qb, t );\n\n\t}\n\n\tstatic slerpFlat( dst, dstOffset, src0, srcOffset0, src1, srcOffset1, t ) {\n\n\t\t// fuzz-free, array-based Quaternion SLERP operation\n\n\t\tlet x0 = src0[ srcOffset0 + 0 ],\n\t\t\ty0 = src0[ srcOffset0 + 1 ],\n\t\t\tz0 = src0[ srcOffset0 + 2 ],\n\t\t\tw0 = src0[ srcOffset0 + 3 ];\n\n\t\tconst x1 = src1[ srcOffset1 + 0 ],\n\t\t\ty1 = src1[ srcOffset1 + 1 ],\n\t\t\tz1 = src1[ srcOffset1 + 2 ],\n\t\t\tw1 = src1[ srcOffset1 + 3 ];\n\n\t\tif ( w0 !== w1 || x0 !== x1 || y0 !== y1 || z0 !== z1 ) {\n\n\t\t\tlet s = 1 - t;\n\t\t\tconst cos = x0 * x1 + y0 * y1 + z0 * z1 + w0 * w1,\n\t\t\t\tdir = ( cos >= 0 ? 1 : - 1 ),\n\t\t\t\tsqrSin = 1 - cos * cos;\n\n\t\t\t// Skip the Slerp for tiny steps to avoid numeric problems:\n\t\t\tif ( sqrSin > Number.EPSILON ) {\n\n\t\t\t\tconst sin = Math.sqrt( sqrSin ),\n\t\t\t\t\tlen = Math.atan2( sin, cos * dir );\n\n\t\t\t\ts = Math.sin( s * len ) / sin;\n\t\t\t\tt = Math.sin( t * len ) / sin;\n\n\t\t\t}\n\n\t\t\tconst tDir = t * dir;\n\n\t\t\tx0 = x0 * s + x1 * tDir;\n\t\t\ty0 = y0 * s + y1 * tDir;\n\t\t\tz0 = z0 * s + z1 * tDir;\n\t\t\tw0 = w0 * s + w1 * tDir;\n\n\t\t\t// Normalize in case we just did a lerp:\n\t\t\tif ( s === 1 - t ) {\n\n\t\t\t\tconst f = 1 / Math.sqrt( x0 * x0 + y0 * y0 + z0 * z0 + w0 * w0 );\n\n\t\t\t\tx0 *= f;\n\t\t\t\ty0 *= f;\n\t\t\t\tz0 *= f;\n\t\t\t\tw0 *= f;\n\n\t\t\t}\n\n\t\t}\n\n\t\tdst[ dstOffset ] = x0;\n\t\tdst[ dstOffset + 1 ] = y0;\n\t\tdst[ dstOffset + 2 ] = z0;\n\t\tdst[ dstOffset + 3 ] = w0;\n\n\t}\n\n\tstatic multiplyQuaternionsFlat( dst, dstOffset, src0, srcOffset0, src1, srcOffset1 ) {\n\n\t\tconst x0 = src0[ srcOffset0 ];\n\t\tconst y0 = src0[ srcOffset0 + 1 ];\n\t\tconst z0 = src0[ srcOffset0 + 2 ];\n\t\tconst w0 = src0[ srcOffset0 + 3 ];\n\n\t\tconst x1 = src1[ srcOffset1 ];\n\t\tconst y1 = src1[ srcOffset1 + 1 ];\n\t\tconst z1 = src1[ srcOffset1 + 2 ];\n\t\tconst w1 = src1[ srcOffset1 + 3 ];\n\n\t\tdst[ dstOffset ] = x0 * w1 + w0 * x1 + y0 * z1 - z0 * y1;\n\t\tdst[ dstOffset + 1 ] = y0 * w1 + w0 * y1 + z0 * x1 - x0 * z1;\n\t\tdst[ dstOffset + 2 ] = z0 * w1 + w0 * z1 + x0 * y1 - y0 * x1;\n\t\tdst[ dstOffset + 3 ] = w0 * w1 - x0 * x1 - y0 * y1 - z0 * z1;\n\n\t\treturn dst;\n\n\t}\n\n\tget x() {\n\n\t\treturn this._x;\n\n\t}\n\n\tset x( value ) {\n\n\t\tthis._x = value;\n\t\tthis._onChangeCallback();\n\n\t}\n\n\tget y() {\n\n\t\treturn this._y;\n\n\t}\n\n\tset y( value ) {\n\n\t\tthis._y = value;\n\t\tthis._onChangeCallback();\n\n\t}\n\n\tget z() {\n\n\t\treturn this._z;\n\n\t}\n\n\tset z( value ) {\n\n\t\tthis._z = value;\n\t\tthis._onChangeCallback();\n\n\t}\n\n\tget w() {\n\n\t\treturn this._w;\n\n\t}\n\n\tset w( value ) {\n\n\t\tthis._w = value;\n\t\tthis._onChangeCallback();\n\n\t}\n\n\tset( x, y, z, w ) {\n\n\t\tthis._x = x;\n\t\tthis._y = y;\n\t\tthis._z = z;\n\t\tthis._w = w;\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor( this._x, this._y, this._z, this._w );\n\n\t}\n\n\tcopy( quaternion ) {\n\n\t\tthis._x = quaternion.x;\n\t\tthis._y = quaternion.y;\n\t\tthis._z = quaternion.z;\n\t\tthis._w = quaternion.w;\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tsetFromEuler( euler, update ) {\n\n\t\tif ( ! ( euler && euler.isEuler ) ) {\n\n\t\t\tthrow new Error( 'THREE.Quaternion: .setFromEuler() now expects an Euler rotation rather than a Vector3 and order.' );\n\n\t\t}\n\n\t\tconst x = euler._x, y = euler._y, z = euler._z, order = euler._order;\n\n\t\t// http://www.mathworks.com/matlabcentral/fileexchange/\n\t\t// \t20696-function-to-convert-between-dcm-euler-angles-quaternions-and-euler-vectors/\n\t\t//\tcontent/SpinCalc.m\n\n\t\tconst cos = Math.cos;\n\t\tconst sin = Math.sin;\n\n\t\tconst c1 = cos( x / 2 );\n\t\tconst c2 = cos( y / 2 );\n\t\tconst c3 = cos( z / 2 );\n\n\t\tconst s1 = sin( x / 2 );\n\t\tconst s2 = sin( y / 2 );\n\t\tconst s3 = sin( z / 2 );\n\n\t\tswitch ( order ) {\n\n\t\t\tcase 'XYZ':\n\t\t\t\tthis._x = s1 * c2 * c3 + c1 * s2 * s3;\n\t\t\t\tthis._y = c1 * s2 * c3 - s1 * c2 * s3;\n\t\t\t\tthis._z = c1 * c2 * s3 + s1 * s2 * c3;\n\t\t\t\tthis._w = c1 * c2 * c3 - s1 * s2 * s3;\n\t\t\t\tbreak;\n\n\t\t\tcase 'YXZ':\n\t\t\t\tthis._x = s1 * c2 * c3 + c1 * s2 * s3;\n\t\t\t\tthis._y = c1 * s2 * c3 - s1 * c2 * s3;\n\t\t\t\tthis._z = c1 * c2 * s3 - s1 * s2 * c3;\n\t\t\t\tthis._w = c1 * c2 * c3 + s1 * s2 * s3;\n\t\t\t\tbreak;\n\n\t\t\tcase 'ZXY':\n\t\t\t\tthis._x = s1 * c2 * c3 - c1 * s2 * s3;\n\t\t\t\tthis._y = c1 * s2 * c3 + s1 * c2 * s3;\n\t\t\t\tthis._z = c1 * c2 * s3 + s1 * s2 * c3;\n\t\t\t\tthis._w = c1 * c2 * c3 - s1 * s2 * s3;\n\t\t\t\tbreak;\n\n\t\t\tcase 'ZYX':\n\t\t\t\tthis._x = s1 * c2 * c3 - c1 * s2 * s3;\n\t\t\t\tthis._y = c1 * s2 * c3 + s1 * c2 * s3;\n\t\t\t\tthis._z = c1 * c2 * s3 - s1 * s2 * c3;\n\t\t\t\tthis._w = c1 * c2 * c3 + s1 * s2 * s3;\n\t\t\t\tbreak;\n\n\t\t\tcase 'YZX':\n\t\t\t\tthis._x = s1 * c2 * c3 + c1 * s2 * s3;\n\t\t\t\tthis._y = c1 * s2 * c3 + s1 * c2 * s3;\n\t\t\t\tthis._z = c1 * c2 * s3 - s1 * s2 * c3;\n\t\t\t\tthis._w = c1 * c2 * c3 - s1 * s2 * s3;\n\t\t\t\tbreak;\n\n\t\t\tcase 'XZY':\n\t\t\t\tthis._x = s1 * c2 * c3 - c1 * s2 * s3;\n\t\t\t\tthis._y = c1 * s2 * c3 - s1 * c2 * s3;\n\t\t\t\tthis._z = c1 * c2 * s3 + s1 * s2 * c3;\n\t\t\t\tthis._w = c1 * c2 * c3 + s1 * s2 * s3;\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\t\t\t\tconsole.warn( 'THREE.Quaternion: .setFromEuler() encountered an unknown order: ' + order );\n\n\t\t}\n\n\t\tif ( update !== false ) this._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tsetFromAxisAngle( axis, angle ) {\n\n\t\t// http://www.euclideanspace.com/maths/geometry/rotations/conversions/angleToQuaternion/index.htm\n\n\t\t// assumes axis is normalized\n\n\t\tconst halfAngle = angle / 2, s = Math.sin( halfAngle );\n\n\t\tthis._x = axis.x * s;\n\t\tthis._y = axis.y * s;\n\t\tthis._z = axis.z * s;\n\t\tthis._w = Math.cos( halfAngle );\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tsetFromRotationMatrix( m ) {\n\n\t\t// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToQuaternion/index.htm\n\n\t\t// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)\n\n\t\tconst te = m.elements,\n\n\t\t\tm11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],\n\t\t\tm21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],\n\t\t\tm31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ],\n\n\t\t\ttrace = m11 + m22 + m33;\n\n\t\tif ( trace > 0 ) {\n\n\t\t\tconst s = 0.5 / Math.sqrt( trace + 1.0 );\n\n\t\t\tthis._w = 0.25 / s;\n\t\t\tthis._x = ( m32 - m23 ) * s;\n\t\t\tthis._y = ( m13 - m31 ) * s;\n\t\t\tthis._z = ( m21 - m12 ) * s;\n\n\t\t} else if ( m11 > m22 && m11 > m33 ) {\n\n\t\t\tconst s = 2.0 * Math.sqrt( 1.0 + m11 - m22 - m33 );\n\n\t\t\tthis._w = ( m32 - m23 ) / s;\n\t\t\tthis._x = 0.25 * s;\n\t\t\tthis._y = ( m12 + m21 ) / s;\n\t\t\tthis._z = ( m13 + m31 ) / s;\n\n\t\t} else if ( m22 > m33 ) {\n\n\t\t\tconst s = 2.0 * Math.sqrt( 1.0 + m22 - m11 - m33 );\n\n\t\t\tthis._w = ( m13 - m31 ) / s;\n\t\t\tthis._x = ( m12 + m21 ) / s;\n\t\t\tthis._y = 0.25 * s;\n\t\t\tthis._z = ( m23 + m32 ) / s;\n\n\t\t} else {\n\n\t\t\tconst s = 2.0 * Math.sqrt( 1.0 + m33 - m11 - m22 );\n\n\t\t\tthis._w = ( m21 - m12 ) / s;\n\t\t\tthis._x = ( m13 + m31 ) / s;\n\t\t\tthis._y = ( m23 + m32 ) / s;\n\t\t\tthis._z = 0.25 * s;\n\n\t\t}\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tsetFromUnitVectors( vFrom, vTo ) {\n\n\t\t// assumes direction vectors vFrom and vTo are normalized\n\n\t\tconst EPS = 0.000001;\n\n\t\tlet r = vFrom.dot( vTo ) + 1;\n\n\t\tif ( r < EPS ) {\n\n\t\t\tr = 0;\n\n\t\t\tif ( Math.abs( vFrom.x ) > Math.abs( vFrom.z ) ) {\n\n\t\t\t\tthis._x = - vFrom.y;\n\t\t\t\tthis._y = vFrom.x;\n\t\t\t\tthis._z = 0;\n\t\t\t\tthis._w = r;\n\n\t\t\t} else {\n\n\t\t\t\tthis._x = 0;\n\t\t\t\tthis._y = - vFrom.z;\n\t\t\t\tthis._z = vFrom.y;\n\t\t\t\tthis._w = r;\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\t// crossVectors( vFrom, vTo ); // inlined to avoid cyclic dependency on Vector3\n\n\t\t\tthis._x = vFrom.y * vTo.z - vFrom.z * vTo.y;\n\t\t\tthis._y = vFrom.z * vTo.x - vFrom.x * vTo.z;\n\t\t\tthis._z = vFrom.x * vTo.y - vFrom.y * vTo.x;\n\t\t\tthis._w = r;\n\n\t\t}\n\n\t\treturn this.normalize();\n\n\t}\n\n\tangleTo( q ) {\n\n\t\treturn 2 * Math.acos( Math.abs( MathUtils.clamp( this.dot( q ), - 1, 1 ) ) );\n\n\t}\n\n\trotateTowards( q, step ) {\n\n\t\tconst angle = this.angleTo( q );\n\n\t\tif ( angle === 0 ) return this;\n\n\t\tconst t = Math.min( 1, step / angle );\n\n\t\tthis.slerp( q, t );\n\n\t\treturn this;\n\n\t}\n\n\tidentity() {\n\n\t\treturn this.set( 0, 0, 0, 1 );\n\n\t}\n\n\tinvert() {\n\n\t\t// quaternion is assumed to have unit length\n\n\t\treturn this.conjugate();\n\n\t}\n\n\tconjugate() {\n\n\t\tthis._x *= - 1;\n\t\tthis._y *= - 1;\n\t\tthis._z *= - 1;\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tdot( v ) {\n\n\t\treturn this._x * v._x + this._y * v._y + this._z * v._z + this._w * v._w;\n\n\t}\n\n\tlengthSq() {\n\n\t\treturn this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w;\n\n\t}\n\n\tlength() {\n\n\t\treturn Math.sqrt( this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w );\n\n\t}\n\n\tnormalize() {\n\n\t\tlet l = this.length();\n\n\t\tif ( l === 0 ) {\n\n\t\t\tthis._x = 0;\n\t\t\tthis._y = 0;\n\t\t\tthis._z = 0;\n\t\t\tthis._w = 1;\n\n\t\t} else {\n\n\t\t\tl = 1 / l;\n\n\t\t\tthis._x = this._x * l;\n\t\t\tthis._y = this._y * l;\n\t\t\tthis._z = this._z * l;\n\t\t\tthis._w = this._w * l;\n\n\t\t}\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tmultiply( q, p ) {\n\n\t\tif ( p !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Quaternion: .multiply() now only accepts one argument. Use .multiplyQuaternions( a, b ) instead.' );\n\t\t\treturn this.multiplyQuaternions( q, p );\n\n\t\t}\n\n\t\treturn this.multiplyQuaternions( this, q );\n\n\t}\n\n\tpremultiply( q ) {\n\n\t\treturn this.multiplyQuaternions( q, this );\n\n\t}\n\n\tmultiplyQuaternions( a, b ) {\n\n\t\t// from http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/code/index.htm\n\n\t\tconst qax = a._x, qay = a._y, qaz = a._z, qaw = a._w;\n\t\tconst qbx = b._x, qby = b._y, qbz = b._z, qbw = b._w;\n\n\t\tthis._x = qax * qbw + qaw * qbx + qay * qbz - qaz * qby;\n\t\tthis._y = qay * qbw + qaw * qby + qaz * qbx - qax * qbz;\n\t\tthis._z = qaz * qbw + qaw * qbz + qax * qby - qay * qbx;\n\t\tthis._w = qaw * qbw - qax * qbx - qay * qby - qaz * qbz;\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tslerp( qb, t ) {\n\n\t\tif ( t === 0 ) return this;\n\t\tif ( t === 1 ) return this.copy( qb );\n\n\t\tconst x = this._x, y = this._y, z = this._z, w = this._w;\n\n\t\t// http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/slerp/\n\n\t\tlet cosHalfTheta = w * qb._w + x * qb._x + y * qb._y + z * qb._z;\n\n\t\tif ( cosHalfTheta < 0 ) {\n\n\t\t\tthis._w = - qb._w;\n\t\t\tthis._x = - qb._x;\n\t\t\tthis._y = - qb._y;\n\t\t\tthis._z = - qb._z;\n\n\t\t\tcosHalfTheta = - cosHalfTheta;\n\n\t\t} else {\n\n\t\t\tthis.copy( qb );\n\n\t\t}\n\n\t\tif ( cosHalfTheta >= 1.0 ) {\n\n\t\t\tthis._w = w;\n\t\t\tthis._x = x;\n\t\t\tthis._y = y;\n\t\t\tthis._z = z;\n\n\t\t\treturn this;\n\n\t\t}\n\n\t\tconst sqrSinHalfTheta = 1.0 - cosHalfTheta * cosHalfTheta;\n\n\t\tif ( sqrSinHalfTheta <= Number.EPSILON ) {\n\n\t\t\tconst s = 1 - t;\n\t\t\tthis._w = s * w + t * this._w;\n\t\t\tthis._x = s * x + t * this._x;\n\t\t\tthis._y = s * y + t * this._y;\n\t\t\tthis._z = s * z + t * this._z;\n\n\t\t\tthis.normalize();\n\t\t\tthis._onChangeCallback();\n\n\t\t\treturn this;\n\n\t\t}\n\n\t\tconst sinHalfTheta = Math.sqrt( sqrSinHalfTheta );\n\t\tconst halfTheta = Math.atan2( sinHalfTheta, cosHalfTheta );\n\t\tconst ratioA = Math.sin( ( 1 - t ) * halfTheta ) / sinHalfTheta,\n\t\t\tratioB = Math.sin( t * halfTheta ) / sinHalfTheta;\n\n\t\tthis._w = ( w * ratioA + this._w * ratioB );\n\t\tthis._x = ( x * ratioA + this._x * ratioB );\n\t\tthis._y = ( y * ratioA + this._y * ratioB );\n\t\tthis._z = ( z * ratioA + this._z * ratioB );\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tequals( quaternion ) {\n\n\t\treturn ( quaternion._x === this._x ) && ( quaternion._y === this._y ) && ( quaternion._z === this._z ) && ( quaternion._w === this._w );\n\n\t}\n\n\tfromArray( array, offset = 0 ) {\n\n\t\tthis._x = array[ offset ];\n\t\tthis._y = array[ offset + 1 ];\n\t\tthis._z = array[ offset + 2 ];\n\t\tthis._w = array[ offset + 3 ];\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tarray[ offset ] = this._x;\n\t\tarray[ offset + 1 ] = this._y;\n\t\tarray[ offset + 2 ] = this._z;\n\t\tarray[ offset + 3 ] = this._w;\n\n\t\treturn array;\n\n\t}\n\n\tfromBufferAttribute( attribute, index ) {\n\n\t\tthis._x = attribute.getX( index );\n\t\tthis._y = attribute.getY( index );\n\t\tthis._z = attribute.getZ( index );\n\t\tthis._w = attribute.getW( index );\n\n\t\treturn this;\n\n\t}\n\n\t_onChange( callback ) {\n\n\t\tthis._onChangeCallback = callback;\n\n\t\treturn this;\n\n\t}\n\n\t_onChangeCallback() {}\n\n}\n\nclass Vector3 {\n\n\tconstructor( x = 0, y = 0, z = 0 ) {\n\n\t\tObject.defineProperty( this, 'isVector3', { value: true } );\n\n\t\tthis.x = x;\n\t\tthis.y = y;\n\t\tthis.z = z;\n\n\t}\n\n\tset( x, y, z ) {\n\n\t\tif ( z === undefined ) z = this.z; // sprite.scale.set(x,y)\n\n\t\tthis.x = x;\n\t\tthis.y = y;\n\t\tthis.z = z;\n\n\t\treturn this;\n\n\t}\n\n\tsetScalar( scalar ) {\n\n\t\tthis.x = scalar;\n\t\tthis.y = scalar;\n\t\tthis.z = scalar;\n\n\t\treturn this;\n\n\t}\n\n\tsetX( x ) {\n\n\t\tthis.x = x;\n\n\t\treturn this;\n\n\t}\n\n\tsetY( y ) {\n\n\t\tthis.y = y;\n\n\t\treturn this;\n\n\t}\n\n\tsetZ( z ) {\n\n\t\tthis.z = z;\n\n\t\treturn this;\n\n\t}\n\n\tsetComponent( index, value ) {\n\n\t\tswitch ( index ) {\n\n\t\t\tcase 0: this.x = value; break;\n\t\t\tcase 1: this.y = value; break;\n\t\t\tcase 2: this.z = value; break;\n\t\t\tdefault: throw new Error( 'index is out of range: ' + index );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tgetComponent( index ) {\n\n\t\tswitch ( index ) {\n\n\t\t\tcase 0: return this.x;\n\t\t\tcase 1: return this.y;\n\t\t\tcase 2: return this.z;\n\t\t\tdefault: throw new Error( 'index is out of range: ' + index );\n\n\t\t}\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor( this.x, this.y, this.z );\n\n\t}\n\n\tcopy( v ) {\n\n\t\tthis.x = v.x;\n\t\tthis.y = v.y;\n\t\tthis.z = v.z;\n\n\t\treturn this;\n\n\t}\n\n\tadd( v, w ) {\n\n\t\tif ( w !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Vector3: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );\n\t\t\treturn this.addVectors( v, w );\n\n\t\t}\n\n\t\tthis.x += v.x;\n\t\tthis.y += v.y;\n\t\tthis.z += v.z;\n\n\t\treturn this;\n\n\t}\n\n\taddScalar( s ) {\n\n\t\tthis.x += s;\n\t\tthis.y += s;\n\t\tthis.z += s;\n\n\t\treturn this;\n\n\t}\n\n\taddVectors( a, b ) {\n\n\t\tthis.x = a.x + b.x;\n\t\tthis.y = a.y + b.y;\n\t\tthis.z = a.z + b.z;\n\n\t\treturn this;\n\n\t}\n\n\taddScaledVector( v, s ) {\n\n\t\tthis.x += v.x * s;\n\t\tthis.y += v.y * s;\n\t\tthis.z += v.z * s;\n\n\t\treturn this;\n\n\t}\n\n\tsub( v, w ) {\n\n\t\tif ( w !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Vector3: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );\n\t\t\treturn this.subVectors( v, w );\n\n\t\t}\n\n\t\tthis.x -= v.x;\n\t\tthis.y -= v.y;\n\t\tthis.z -= v.z;\n\n\t\treturn this;\n\n\t}\n\n\tsubScalar( s ) {\n\n\t\tthis.x -= s;\n\t\tthis.y -= s;\n\t\tthis.z -= s;\n\n\t\treturn this;\n\n\t}\n\n\tsubVectors( a, b ) {\n\n\t\tthis.x = a.x - b.x;\n\t\tthis.y = a.y - b.y;\n\t\tthis.z = a.z - b.z;\n\n\t\treturn this;\n\n\t}\n\n\tmultiply( v, w ) {\n\n\t\tif ( w !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Vector3: .multiply() now only accepts one argument. Use .multiplyVectors( a, b ) instead.' );\n\t\t\treturn this.multiplyVectors( v, w );\n\n\t\t}\n\n\t\tthis.x *= v.x;\n\t\tthis.y *= v.y;\n\t\tthis.z *= v.z;\n\n\t\treturn this;\n\n\t}\n\n\tmultiplyScalar( scalar ) {\n\n\t\tthis.x *= scalar;\n\t\tthis.y *= scalar;\n\t\tthis.z *= scalar;\n\n\t\treturn this;\n\n\t}\n\n\tmultiplyVectors( a, b ) {\n\n\t\tthis.x = a.x * b.x;\n\t\tthis.y = a.y * b.y;\n\t\tthis.z = a.z * b.z;\n\n\t\treturn this;\n\n\t}\n\n\tapplyEuler( euler ) {\n\n\t\tif ( ! ( euler && euler.isEuler ) ) {\n\n\t\t\tconsole.error( 'THREE.Vector3: .applyEuler() now expects an Euler rotation rather than a Vector3 and order.' );\n\n\t\t}\n\n\t\treturn this.applyQuaternion( _quaternion.setFromEuler( euler ) );\n\n\t}\n\n\tapplyAxisAngle( axis, angle ) {\n\n\t\treturn this.applyQuaternion( _quaternion.setFromAxisAngle( axis, angle ) );\n\n\t}\n\n\tapplyMatrix3( m ) {\n\n\t\tconst x = this.x, y = this.y, z = this.z;\n\t\tconst e = m.elements;\n\n\t\tthis.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ] * z;\n\t\tthis.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ] * z;\n\t\tthis.z = e[ 2 ] * x + e[ 5 ] * y + e[ 8 ] * z;\n\n\t\treturn this;\n\n\t}\n\n\tapplyNormalMatrix( m ) {\n\n\t\treturn this.applyMatrix3( m ).normalize();\n\n\t}\n\n\tapplyMatrix4( m ) {\n\n\t\tconst x = this.x, y = this.y, z = this.z;\n\t\tconst e = m.elements;\n\n\t\tconst w = 1 / ( e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] );\n\n\t\tthis.x = ( e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z + e[ 12 ] ) * w;\n\t\tthis.y = ( e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z + e[ 13 ] ) * w;\n\t\tthis.z = ( e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] ) * w;\n\n\t\treturn this;\n\n\t}\n\n\tapplyQuaternion( q ) {\n\n\t\tconst x = this.x, y = this.y, z = this.z;\n\t\tconst qx = q.x, qy = q.y, qz = q.z, qw = q.w;\n\n\t\t// calculate quat * vector\n\n\t\tconst ix = qw * x + qy * z - qz * y;\n\t\tconst iy = qw * y + qz * x - qx * z;\n\t\tconst iz = qw * z + qx * y - qy * x;\n\t\tconst iw = - qx * x - qy * y - qz * z;\n\n\t\t// calculate result * inverse quat\n\n\t\tthis.x = ix * qw + iw * - qx + iy * - qz - iz * - qy;\n\t\tthis.y = iy * qw + iw * - qy + iz * - qx - ix * - qz;\n\t\tthis.z = iz * qw + iw * - qz + ix * - qy - iy * - qx;\n\n\t\treturn this;\n\n\t}\n\n\tproject( camera ) {\n\n\t\treturn this.applyMatrix4( camera.matrixWorldInverse ).applyMatrix4( camera.projectionMatrix );\n\n\t}\n\n\tunproject( camera ) {\n\n\t\treturn this.applyMatrix4( camera.projectionMatrixInverse ).applyMatrix4( camera.matrixWorld );\n\n\t}\n\n\ttransformDirection( m ) {\n\n\t\t// input: THREE.Matrix4 affine matrix\n\t\t// vector interpreted as a direction\n\n\t\tconst x = this.x, y = this.y, z = this.z;\n\t\tconst e = m.elements;\n\n\t\tthis.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z;\n\t\tthis.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z;\n\t\tthis.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z;\n\n\t\treturn this.normalize();\n\n\t}\n\n\tdivide( v ) {\n\n\t\tthis.x /= v.x;\n\t\tthis.y /= v.y;\n\t\tthis.z /= v.z;\n\n\t\treturn this;\n\n\t}\n\n\tdivideScalar( scalar ) {\n\n\t\treturn this.multiplyScalar( 1 / scalar );\n\n\t}\n\n\tmin( v ) {\n\n\t\tthis.x = Math.min( this.x, v.x );\n\t\tthis.y = Math.min( this.y, v.y );\n\t\tthis.z = Math.min( this.z, v.z );\n\n\t\treturn this;\n\n\t}\n\n\tmax( v ) {\n\n\t\tthis.x = Math.max( this.x, v.x );\n\t\tthis.y = Math.max( this.y, v.y );\n\t\tthis.z = Math.max( this.z, v.z );\n\n\t\treturn this;\n\n\t}\n\n\tclamp( min, max ) {\n\n\t\t// assumes min < max, componentwise\n\n\t\tthis.x = Math.max( min.x, Math.min( max.x, this.x ) );\n\t\tthis.y = Math.max( min.y, Math.min( max.y, this.y ) );\n\t\tthis.z = Math.max( min.z, Math.min( max.z, this.z ) );\n\n\t\treturn this;\n\n\t}\n\n\tclampScalar( minVal, maxVal ) {\n\n\t\tthis.x = Math.max( minVal, Math.min( maxVal, this.x ) );\n\t\tthis.y = Math.max( minVal, Math.min( maxVal, this.y ) );\n\t\tthis.z = Math.max( minVal, Math.min( maxVal, this.z ) );\n\n\t\treturn this;\n\n\t}\n\n\tclampLength( min, max ) {\n\n\t\tconst length = this.length();\n\n\t\treturn this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );\n\n\t}\n\n\tfloor() {\n\n\t\tthis.x = Math.floor( this.x );\n\t\tthis.y = Math.floor( this.y );\n\t\tthis.z = Math.floor( this.z );\n\n\t\treturn this;\n\n\t}\n\n\tceil() {\n\n\t\tthis.x = Math.ceil( this.x );\n\t\tthis.y = Math.ceil( this.y );\n\t\tthis.z = Math.ceil( this.z );\n\n\t\treturn this;\n\n\t}\n\n\tround() {\n\n\t\tthis.x = Math.round( this.x );\n\t\tthis.y = Math.round( this.y );\n\t\tthis.z = Math.round( this.z );\n\n\t\treturn this;\n\n\t}\n\n\troundToZero() {\n\n\t\tthis.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );\n\t\tthis.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );\n\t\tthis.z = ( this.z < 0 ) ? Math.ceil( this.z ) : Math.floor( this.z );\n\n\t\treturn this;\n\n\t}\n\n\tnegate() {\n\n\t\tthis.x = - this.x;\n\t\tthis.y = - this.y;\n\t\tthis.z = - this.z;\n\n\t\treturn this;\n\n\t}\n\n\tdot( v ) {\n\n\t\treturn this.x * v.x + this.y * v.y + this.z * v.z;\n\n\t}\n\n\t// TODO lengthSquared?\n\n\tlengthSq() {\n\n\t\treturn this.x * this.x + this.y * this.y + this.z * this.z;\n\n\t}\n\n\tlength() {\n\n\t\treturn Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z );\n\n\t}\n\n\tmanhattanLength() {\n\n\t\treturn Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z );\n\n\t}\n\n\tnormalize() {\n\n\t\treturn this.divideScalar( this.length() || 1 );\n\n\t}\n\n\tsetLength( length ) {\n\n\t\treturn this.normalize().multiplyScalar( length );\n\n\t}\n\n\tlerp( v, alpha ) {\n\n\t\tthis.x += ( v.x - this.x ) * alpha;\n\t\tthis.y += ( v.y - this.y ) * alpha;\n\t\tthis.z += ( v.z - this.z ) * alpha;\n\n\t\treturn this;\n\n\t}\n\n\tlerpVectors( v1, v2, alpha ) {\n\n\t\tthis.x = v1.x + ( v2.x - v1.x ) * alpha;\n\t\tthis.y = v1.y + ( v2.y - v1.y ) * alpha;\n\t\tthis.z = v1.z + ( v2.z - v1.z ) * alpha;\n\n\t\treturn this;\n\n\t}\n\n\tcross( v, w ) {\n\n\t\tif ( w !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Vector3: .cross() now only accepts one argument. Use .crossVectors( a, b ) instead.' );\n\t\t\treturn this.crossVectors( v, w );\n\n\t\t}\n\n\t\treturn this.crossVectors( this, v );\n\n\t}\n\n\tcrossVectors( a, b ) {\n\n\t\tconst ax = a.x, ay = a.y, az = a.z;\n\t\tconst bx = b.x, by = b.y, bz = b.z;\n\n\t\tthis.x = ay * bz - az * by;\n\t\tthis.y = az * bx - ax * bz;\n\t\tthis.z = ax * by - ay * bx;\n\n\t\treturn this;\n\n\t}\n\n\tprojectOnVector( v ) {\n\n\t\tconst denominator = v.lengthSq();\n\n\t\tif ( denominator === 0 ) return this.set( 0, 0, 0 );\n\n\t\tconst scalar = v.dot( this ) / denominator;\n\n\t\treturn this.copy( v ).multiplyScalar( scalar );\n\n\t}\n\n\tprojectOnPlane( planeNormal ) {\n\n\t\t_vector.copy( this ).projectOnVector( planeNormal );\n\n\t\treturn this.sub( _vector );\n\n\t}\n\n\treflect( normal ) {\n\n\t\t// reflect incident vector off plane orthogonal to normal\n\t\t// normal is assumed to have unit length\n\n\t\treturn this.sub( _vector.copy( normal ).multiplyScalar( 2 * this.dot( normal ) ) );\n\n\t}\n\n\tangleTo( v ) {\n\n\t\tconst denominator = Math.sqrt( this.lengthSq() * v.lengthSq() );\n\n\t\tif ( denominator === 0 ) return Math.PI / 2;\n\n\t\tconst theta = this.dot( v ) / denominator;\n\n\t\t// clamp, to handle numerical problems\n\n\t\treturn Math.acos( MathUtils.clamp( theta, - 1, 1 ) );\n\n\t}\n\n\tdistanceTo( v ) {\n\n\t\treturn Math.sqrt( this.distanceToSquared( v ) );\n\n\t}\n\n\tdistanceToSquared( v ) {\n\n\t\tconst dx = this.x - v.x, dy = this.y - v.y, dz = this.z - v.z;\n\n\t\treturn dx * dx + dy * dy + dz * dz;\n\n\t}\n\n\tmanhattanDistanceTo( v ) {\n\n\t\treturn Math.abs( this.x - v.x ) + Math.abs( this.y - v.y ) + Math.abs( this.z - v.z );\n\n\t}\n\n\tsetFromSpherical( s ) {\n\n\t\treturn this.setFromSphericalCoords( s.radius, s.phi, s.theta );\n\n\t}\n\n\tsetFromSphericalCoords( radius, phi, theta ) {\n\n\t\tconst sinPhiRadius = Math.sin( phi ) * radius;\n\n\t\tthis.x = sinPhiRadius * Math.sin( theta );\n\t\tthis.y = Math.cos( phi ) * radius;\n\t\tthis.z = sinPhiRadius * Math.cos( theta );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromCylindrical( c ) {\n\n\t\treturn this.setFromCylindricalCoords( c.radius, c.theta, c.y );\n\n\t}\n\n\tsetFromCylindricalCoords( radius, theta, y ) {\n\n\t\tthis.x = radius * Math.sin( theta );\n\t\tthis.y = y;\n\t\tthis.z = radius * Math.cos( theta );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromMatrixPosition( m ) {\n\n\t\tconst e = m.elements;\n\n\t\tthis.x = e[ 12 ];\n\t\tthis.y = e[ 13 ];\n\t\tthis.z = e[ 14 ];\n\n\t\treturn this;\n\n\t}\n\n\tsetFromMatrixScale( m ) {\n\n\t\tconst sx = this.setFromMatrixColumn( m, 0 ).length();\n\t\tconst sy = this.setFromMatrixColumn( m, 1 ).length();\n\t\tconst sz = this.setFromMatrixColumn( m, 2 ).length();\n\n\t\tthis.x = sx;\n\t\tthis.y = sy;\n\t\tthis.z = sz;\n\n\t\treturn this;\n\n\t}\n\n\tsetFromMatrixColumn( m, index ) {\n\n\t\treturn this.fromArray( m.elements, index * 4 );\n\n\t}\n\n\tsetFromMatrix3Column( m, index ) {\n\n\t\treturn this.fromArray( m.elements, index * 3 );\n\n\t}\n\n\tequals( v ) {\n\n\t\treturn ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) );\n\n\t}\n\n\tfromArray( array, offset = 0 ) {\n\n\t\tthis.x = array[ offset ];\n\t\tthis.y = array[ offset + 1 ];\n\t\tthis.z = array[ offset + 2 ];\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tarray[ offset ] = this.x;\n\t\tarray[ offset + 1 ] = this.y;\n\t\tarray[ offset + 2 ] = this.z;\n\n\t\treturn array;\n\n\t}\n\n\tfromBufferAttribute( attribute, index, offset ) {\n\n\t\tif ( offset !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Vector3: offset has been removed from .fromBufferAttribute().' );\n\n\t\t}\n\n\t\tthis.x = attribute.getX( index );\n\t\tthis.y = attribute.getY( index );\n\t\tthis.z = attribute.getZ( index );\n\n\t\treturn this;\n\n\t}\n\n\trandom() {\n\n\t\tthis.x = Math.random();\n\t\tthis.y = Math.random();\n\t\tthis.z = Math.random();\n\n\t\treturn this;\n\n\t}\n\n}\n\nconst _vector = /*@__PURE__*/ new Vector3();\nconst _quaternion = /*@__PURE__*/ new Quaternion();\n\nclass Box3 {\n\n\tconstructor( min, max ) {\n\n\t\tObject.defineProperty( this, 'isBox3', { value: true } );\n\n\t\tthis.min = ( min !== undefined ) ? min : new Vector3( + Infinity, + Infinity, + Infinity );\n\t\tthis.max = ( max !== undefined ) ? max : new Vector3( - Infinity, - Infinity, - Infinity );\n\n\t}\n\n\tset( min, max ) {\n\n\t\tthis.min.copy( min );\n\t\tthis.max.copy( max );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromArray( array ) {\n\n\t\tlet minX = + Infinity;\n\t\tlet minY = + Infinity;\n\t\tlet minZ = + Infinity;\n\n\t\tlet maxX = - Infinity;\n\t\tlet maxY = - Infinity;\n\t\tlet maxZ = - Infinity;\n\n\t\tfor ( let i = 0, l = array.length; i < l; i += 3 ) {\n\n\t\t\tconst x = array[ i ];\n\t\t\tconst y = array[ i + 1 ];\n\t\t\tconst z = array[ i + 2 ];\n\n\t\t\tif ( x < minX ) minX = x;\n\t\t\tif ( y < minY ) minY = y;\n\t\t\tif ( z < minZ ) minZ = z;\n\n\t\t\tif ( x > maxX ) maxX = x;\n\t\t\tif ( y > maxY ) maxY = y;\n\t\t\tif ( z > maxZ ) maxZ = z;\n\n\t\t}\n\n\t\tthis.min.set( minX, minY, minZ );\n\t\tthis.max.set( maxX, maxY, maxZ );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromBufferAttribute( attribute ) {\n\n\t\tlet minX = + Infinity;\n\t\tlet minY = + Infinity;\n\t\tlet minZ = + Infinity;\n\n\t\tlet maxX = - Infinity;\n\t\tlet maxY = - Infinity;\n\t\tlet maxZ = - Infinity;\n\n\t\tfor ( let i = 0, l = attribute.count; i < l; i ++ ) {\n\n\t\t\tconst x = attribute.getX( i );\n\t\t\tconst y = attribute.getY( i );\n\t\t\tconst z = attribute.getZ( i );\n\n\t\t\tif ( x < minX ) minX = x;\n\t\t\tif ( y < minY ) minY = y;\n\t\t\tif ( z < minZ ) minZ = z;\n\n\t\t\tif ( x > maxX ) maxX = x;\n\t\t\tif ( y > maxY ) maxY = y;\n\t\t\tif ( z > maxZ ) maxZ = z;\n\n\t\t}\n\n\t\tthis.min.set( minX, minY, minZ );\n\t\tthis.max.set( maxX, maxY, maxZ );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromPoints( points ) {\n\n\t\tthis.makeEmpty();\n\n\t\tfor ( let i = 0, il = points.length; i < il; i ++ ) {\n\n\t\t\tthis.expandByPoint( points[ i ] );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetFromCenterAndSize( center, size ) {\n\n\t\tconst halfSize = _vector$1.copy( size ).multiplyScalar( 0.5 );\n\n\t\tthis.min.copy( center ).sub( halfSize );\n\t\tthis.max.copy( center ).add( halfSize );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromObject( object ) {\n\n\t\tthis.makeEmpty();\n\n\t\treturn this.expandByObject( object );\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( box ) {\n\n\t\tthis.min.copy( box.min );\n\t\tthis.max.copy( box.max );\n\n\t\treturn this;\n\n\t}\n\n\tmakeEmpty() {\n\n\t\tthis.min.x = this.min.y = this.min.z = + Infinity;\n\t\tthis.max.x = this.max.y = this.max.z = - Infinity;\n\n\t\treturn this;\n\n\t}\n\n\tisEmpty() {\n\n\t\t// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes\n\n\t\treturn ( this.max.x < this.min.x ) || ( this.max.y < this.min.y ) || ( this.max.z < this.min.z );\n\n\t}\n\n\tgetCenter( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Box3: .getCenter() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\treturn this.isEmpty() ? target.set( 0, 0, 0 ) : target.addVectors( this.min, this.max ).multiplyScalar( 0.5 );\n\n\t}\n\n\tgetSize( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Box3: .getSize() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\treturn this.isEmpty() ? target.set( 0, 0, 0 ) : target.subVectors( this.max, this.min );\n\n\t}\n\n\texpandByPoint( point ) {\n\n\t\tthis.min.min( point );\n\t\tthis.max.max( point );\n\n\t\treturn this;\n\n\t}\n\n\texpandByVector( vector ) {\n\n\t\tthis.min.sub( vector );\n\t\tthis.max.add( vector );\n\n\t\treturn this;\n\n\t}\n\n\texpandByScalar( scalar ) {\n\n\t\tthis.min.addScalar( - scalar );\n\t\tthis.max.addScalar( scalar );\n\n\t\treturn this;\n\n\t}\n\n\texpandByObject( object ) {\n\n\t\t// Computes the world-axis-aligned bounding box of an object (including its children),\n\t\t// accounting for both the object's, and children's, world transforms\n\n\t\tobject.updateWorldMatrix( false, false );\n\n\t\tconst geometry = object.geometry;\n\n\t\tif ( geometry !== undefined ) {\n\n\t\t\tif ( geometry.boundingBox === null ) {\n\n\t\t\t\tgeometry.computeBoundingBox();\n\n\t\t\t}\n\n\t\t\t_box.copy( geometry.boundingBox );\n\t\t\t_box.applyMatrix4( object.matrixWorld );\n\n\t\t\tthis.union( _box );\n\n\t\t}\n\n\t\tconst children = object.children;\n\n\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\tthis.expandByObject( children[ i ] );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tcontainsPoint( point ) {\n\n\t\treturn point.x < this.min.x || point.x > this.max.x ||\n\t\t\tpoint.y < this.min.y || point.y > this.max.y ||\n\t\t\tpoint.z < this.min.z || point.z > this.max.z ? false : true;\n\n\t}\n\n\tcontainsBox( box ) {\n\n\t\treturn this.min.x <= box.min.x && box.max.x <= this.max.x &&\n\t\t\tthis.min.y <= box.min.y && box.max.y <= this.max.y &&\n\t\t\tthis.min.z <= box.min.z && box.max.z <= this.max.z;\n\n\t}\n\n\tgetParameter( point, target ) {\n\n\t\t// This can potentially have a divide by zero if the box\n\t\t// has a size dimension of 0.\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Box3: .getParameter() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\treturn target.set(\n\t\t\t( point.x - this.min.x ) / ( this.max.x - this.min.x ),\n\t\t\t( point.y - this.min.y ) / ( this.max.y - this.min.y ),\n\t\t\t( point.z - this.min.z ) / ( this.max.z - this.min.z )\n\t\t);\n\n\t}\n\n\tintersectsBox( box ) {\n\n\t\t// using 6 splitting planes to rule out intersections.\n\t\treturn box.max.x < this.min.x || box.min.x > this.max.x ||\n\t\t\tbox.max.y < this.min.y || box.min.y > this.max.y ||\n\t\t\tbox.max.z < this.min.z || box.min.z > this.max.z ? false : true;\n\n\t}\n\n\tintersectsSphere( sphere ) {\n\n\t\t// Find the point on the AABB closest to the sphere center.\n\t\tthis.clampPoint( sphere.center, _vector$1 );\n\n\t\t// If that point is inside the sphere, the AABB and sphere intersect.\n\t\treturn _vector$1.distanceToSquared( sphere.center ) <= ( sphere.radius * sphere.radius );\n\n\t}\n\n\tintersectsPlane( plane ) {\n\n\t\t// We compute the minimum and maximum dot product values. If those values\n\t\t// are on the same side (back or front) of the plane, then there is no intersection.\n\n\t\tlet min, max;\n\n\t\tif ( plane.normal.x > 0 ) {\n\n\t\t\tmin = plane.normal.x * this.min.x;\n\t\t\tmax = plane.normal.x * this.max.x;\n\n\t\t} else {\n\n\t\t\tmin = plane.normal.x * this.max.x;\n\t\t\tmax = plane.normal.x * this.min.x;\n\n\t\t}\n\n\t\tif ( plane.normal.y > 0 ) {\n\n\t\t\tmin += plane.normal.y * this.min.y;\n\t\t\tmax += plane.normal.y * this.max.y;\n\n\t\t} else {\n\n\t\t\tmin += plane.normal.y * this.max.y;\n\t\t\tmax += plane.normal.y * this.min.y;\n\n\t\t}\n\n\t\tif ( plane.normal.z > 0 ) {\n\n\t\t\tmin += plane.normal.z * this.min.z;\n\t\t\tmax += plane.normal.z * this.max.z;\n\n\t\t} else {\n\n\t\t\tmin += plane.normal.z * this.max.z;\n\t\t\tmax += plane.normal.z * this.min.z;\n\n\t\t}\n\n\t\treturn ( min <= - plane.constant && max >= - plane.constant );\n\n\t}\n\n\tintersectsTriangle( triangle ) {\n\n\t\tif ( this.isEmpty() ) {\n\n\t\t\treturn false;\n\n\t\t}\n\n\t\t// compute box center and extents\n\t\tthis.getCenter( _center );\n\t\t_extents.subVectors( this.max, _center );\n\n\t\t// translate triangle to aabb origin\n\t\t_v0.subVectors( triangle.a, _center );\n\t\t_v1.subVectors( triangle.b, _center );\n\t\t_v2.subVectors( triangle.c, _center );\n\n\t\t// compute edge vectors for triangle\n\t\t_f0.subVectors( _v1, _v0 );\n\t\t_f1.subVectors( _v2, _v1 );\n\t\t_f2.subVectors( _v0, _v2 );\n\n\t\t// test against axes that are given by cross product combinations of the edges of the triangle and the edges of the aabb\n\t\t// make an axis testing of each of the 3 sides of the aabb against each of the 3 sides of the triangle = 9 axis of separation\n\t\t// axis_ij = u_i x f_j (u0, u1, u2 = face normals of aabb = x,y,z axes vectors since aabb is axis aligned)\n\t\tlet axes = [\n\t\t\t0, - _f0.z, _f0.y, 0, - _f1.z, _f1.y, 0, - _f2.z, _f2.y,\n\t\t\t_f0.z, 0, - _f0.x, _f1.z, 0, - _f1.x, _f2.z, 0, - _f2.x,\n\t\t\t- _f0.y, _f0.x, 0, - _f1.y, _f1.x, 0, - _f2.y, _f2.x, 0\n\t\t];\n\t\tif ( ! satForAxes( axes, _v0, _v1, _v2, _extents ) ) {\n\n\t\t\treturn false;\n\n\t\t}\n\n\t\t// test 3 face normals from the aabb\n\t\taxes = [ 1, 0, 0, 0, 1, 0, 0, 0, 1 ];\n\t\tif ( ! satForAxes( axes, _v0, _v1, _v2, _extents ) ) {\n\n\t\t\treturn false;\n\n\t\t}\n\n\t\t// finally testing the face normal of the triangle\n\t\t// use already existing triangle edge vectors here\n\t\t_triangleNormal.crossVectors( _f0, _f1 );\n\t\taxes = [ _triangleNormal.x, _triangleNormal.y, _triangleNormal.z ];\n\n\t\treturn satForAxes( axes, _v0, _v1, _v2, _extents );\n\n\t}\n\n\tclampPoint( point, target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Box3: .clampPoint() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\treturn target.copy( point ).clamp( this.min, this.max );\n\n\t}\n\n\tdistanceToPoint( point ) {\n\n\t\tconst clampedPoint = _vector$1.copy( point ).clamp( this.min, this.max );\n\n\t\treturn clampedPoint.sub( point ).length();\n\n\t}\n\n\tgetBoundingSphere( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.error( 'THREE.Box3: .getBoundingSphere() target is now required' );\n\t\t\t//target = new Sphere(); // removed to avoid cyclic dependency\n\n\t\t}\n\n\t\tthis.getCenter( target.center );\n\n\t\ttarget.radius = this.getSize( _vector$1 ).length() * 0.5;\n\n\t\treturn target;\n\n\t}\n\n\tintersect( box ) {\n\n\t\tthis.min.max( box.min );\n\t\tthis.max.min( box.max );\n\n\t\t// ensure that if there is no overlap, the result is fully empty, not slightly empty with non-inf/+inf values that will cause subsequence intersects to erroneously return valid values.\n\t\tif ( this.isEmpty() ) this.makeEmpty();\n\n\t\treturn this;\n\n\t}\n\n\tunion( box ) {\n\n\t\tthis.min.min( box.min );\n\t\tthis.max.max( box.max );\n\n\t\treturn this;\n\n\t}\n\n\tapplyMatrix4( matrix ) {\n\n\t\t// transform of empty box is an empty box.\n\t\tif ( this.isEmpty() ) return this;\n\n\t\t// NOTE: I am using a binary pattern to specify all 2^3 combinations below\n\t\t_points[ 0 ].set( this.min.x, this.min.y, this.min.z ).applyMatrix4( matrix ); // 000\n\t\t_points[ 1 ].set( this.min.x, this.min.y, this.max.z ).applyMatrix4( matrix ); // 001\n\t\t_points[ 2 ].set( this.min.x, this.max.y, this.min.z ).applyMatrix4( matrix ); // 010\n\t\t_points[ 3 ].set( this.min.x, this.max.y, this.max.z ).applyMatrix4( matrix ); // 011\n\t\t_points[ 4 ].set( this.max.x, this.min.y, this.min.z ).applyMatrix4( matrix ); // 100\n\t\t_points[ 5 ].set( this.max.x, this.min.y, this.max.z ).applyMatrix4( matrix ); // 101\n\t\t_points[ 6 ].set( this.max.x, this.max.y, this.min.z ).applyMatrix4( matrix ); // 110\n\t\t_points[ 7 ].set( this.max.x, this.max.y, this.max.z ).applyMatrix4( matrix ); // 111\n\n\t\tthis.setFromPoints( _points );\n\n\t\treturn this;\n\n\t}\n\n\ttranslate( offset ) {\n\n\t\tthis.min.add( offset );\n\t\tthis.max.add( offset );\n\n\t\treturn this;\n\n\t}\n\n\tequals( box ) {\n\n\t\treturn box.min.equals( this.min ) && box.max.equals( this.max );\n\n\t}\n\n}\n\nfunction satForAxes( axes, v0, v1, v2, extents ) {\n\n\tfor ( let i = 0, j = axes.length - 3; i <= j; i += 3 ) {\n\n\t\t_testAxis.fromArray( axes, i );\n\t\t// project the aabb onto the seperating axis\n\t\tconst r = extents.x * Math.abs( _testAxis.x ) + extents.y * Math.abs( _testAxis.y ) + extents.z * Math.abs( _testAxis.z );\n\t\t// project all 3 vertices of the triangle onto the seperating axis\n\t\tconst p0 = v0.dot( _testAxis );\n\t\tconst p1 = v1.dot( _testAxis );\n\t\tconst p2 = v2.dot( _testAxis );\n\t\t// actual test, basically see if either of the most extreme of the triangle points intersects r\n\t\tif ( Math.max( - Math.max( p0, p1, p2 ), Math.min( p0, p1, p2 ) ) > r ) {\n\n\t\t\t// points of the projected triangle are outside the projected half-length of the aabb\n\t\t\t// the axis is seperating and we can exit\n\t\t\treturn false;\n\n\t\t}\n\n\t}\n\n\treturn true;\n\n}\n\nconst _points = [\n\t/*@__PURE__*/ new Vector3(),\n\t/*@__PURE__*/ new Vector3(),\n\t/*@__PURE__*/ new Vector3(),\n\t/*@__PURE__*/ new Vector3(),\n\t/*@__PURE__*/ new Vector3(),\n\t/*@__PURE__*/ new Vector3(),\n\t/*@__PURE__*/ new Vector3(),\n\t/*@__PURE__*/ new Vector3()\n];\n\nconst _vector$1 = /*@__PURE__*/ new Vector3();\n\nconst _box = /*@__PURE__*/ new Box3();\n\n// triangle centered vertices\n\nconst _v0 = /*@__PURE__*/ new Vector3();\nconst _v1 = /*@__PURE__*/ new Vector3();\nconst _v2 = /*@__PURE__*/ new Vector3();\n\n// triangle edge vectors\n\nconst _f0 = /*@__PURE__*/ new Vector3();\nconst _f1 = /*@__PURE__*/ new Vector3();\nconst _f2 = /*@__PURE__*/ new Vector3();\n\nconst _center = /*@__PURE__*/ new Vector3();\nconst _extents = /*@__PURE__*/ new Vector3();\nconst _triangleNormal = /*@__PURE__*/ new Vector3();\nconst _testAxis = /*@__PURE__*/ new Vector3();\n\nconst _box$1 = /*@__PURE__*/ new Box3();\n\nclass Sphere {\n\n\tconstructor( center, radius ) {\n\n\t\tthis.center = ( center !== undefined ) ? center : new Vector3();\n\t\tthis.radius = ( radius !== undefined ) ? radius : - 1;\n\n\t}\n\n\tset( center, radius ) {\n\n\t\tthis.center.copy( center );\n\t\tthis.radius = radius;\n\n\t\treturn this;\n\n\t}\n\n\tsetFromPoints( points, optionalCenter ) {\n\n\t\tconst center = this.center;\n\n\t\tif ( optionalCenter !== undefined ) {\n\n\t\t\tcenter.copy( optionalCenter );\n\n\t\t} else {\n\n\t\t\t_box$1.setFromPoints( points ).getCenter( center );\n\n\t\t}\n\n\t\tlet maxRadiusSq = 0;\n\n\t\tfor ( let i = 0, il = points.length; i < il; i ++ ) {\n\n\t\t\tmaxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( points[ i ] ) );\n\n\t\t}\n\n\t\tthis.radius = Math.sqrt( maxRadiusSq );\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( sphere ) {\n\n\t\tthis.center.copy( sphere.center );\n\t\tthis.radius = sphere.radius;\n\n\t\treturn this;\n\n\t}\n\n\tisEmpty() {\n\n\t\treturn ( this.radius < 0 );\n\n\t}\n\n\tmakeEmpty() {\n\n\t\tthis.center.set( 0, 0, 0 );\n\t\tthis.radius = - 1;\n\n\t\treturn this;\n\n\t}\n\n\tcontainsPoint( point ) {\n\n\t\treturn ( point.distanceToSquared( this.center ) <= ( this.radius * this.radius ) );\n\n\t}\n\n\tdistanceToPoint( point ) {\n\n\t\treturn ( point.distanceTo( this.center ) - this.radius );\n\n\t}\n\n\tintersectsSphere( sphere ) {\n\n\t\tconst radiusSum = this.radius + sphere.radius;\n\n\t\treturn sphere.center.distanceToSquared( this.center ) <= ( radiusSum * radiusSum );\n\n\t}\n\n\tintersectsBox( box ) {\n\n\t\treturn box.intersectsSphere( this );\n\n\t}\n\n\tintersectsPlane( plane ) {\n\n\t\treturn Math.abs( plane.distanceToPoint( this.center ) ) <= this.radius;\n\n\t}\n\n\tclampPoint( point, target ) {\n\n\t\tconst deltaLengthSq = this.center.distanceToSquared( point );\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Sphere: .clampPoint() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\ttarget.copy( point );\n\n\t\tif ( deltaLengthSq > ( this.radius * this.radius ) ) {\n\n\t\t\ttarget.sub( this.center ).normalize();\n\t\t\ttarget.multiplyScalar( this.radius ).add( this.center );\n\n\t\t}\n\n\t\treturn target;\n\n\t}\n\n\tgetBoundingBox( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Sphere: .getBoundingBox() target is now required' );\n\t\t\ttarget = new Box3();\n\n\t\t}\n\n\t\tif ( this.isEmpty() ) {\n\n\t\t\t// Empty sphere produces empty bounding box\n\t\t\ttarget.makeEmpty();\n\t\t\treturn target;\n\n\t\t}\n\n\t\ttarget.set( this.center, this.center );\n\t\ttarget.expandByScalar( this.radius );\n\n\t\treturn target;\n\n\t}\n\n\tapplyMatrix4( matrix ) {\n\n\t\tthis.center.applyMatrix4( matrix );\n\t\tthis.radius = this.radius * matrix.getMaxScaleOnAxis();\n\n\t\treturn this;\n\n\t}\n\n\ttranslate( offset ) {\n\n\t\tthis.center.add( offset );\n\n\t\treturn this;\n\n\t}\n\n\tequals( sphere ) {\n\n\t\treturn sphere.center.equals( this.center ) && ( sphere.radius === this.radius );\n\n\t}\n\n}\n\nconst _vector$2 = /*@__PURE__*/ new Vector3();\nconst _segCenter = /*@__PURE__*/ new Vector3();\nconst _segDir = /*@__PURE__*/ new Vector3();\nconst _diff = /*@__PURE__*/ new Vector3();\n\nconst _edge1 = /*@__PURE__*/ new Vector3();\nconst _edge2 = /*@__PURE__*/ new Vector3();\nconst _normal = /*@__PURE__*/ new Vector3();\n\nclass Ray {\n\n\tconstructor( origin, direction ) {\n\n\t\tthis.origin = ( origin !== undefined ) ? origin : new Vector3();\n\t\tthis.direction = ( direction !== undefined ) ? direction : new Vector3( 0, 0, - 1 );\n\n\t}\n\n\tset( origin, direction ) {\n\n\t\tthis.origin.copy( origin );\n\t\tthis.direction.copy( direction );\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( ray ) {\n\n\t\tthis.origin.copy( ray.origin );\n\t\tthis.direction.copy( ray.direction );\n\n\t\treturn this;\n\n\t}\n\n\tat( t, target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Ray: .at() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\treturn target.copy( this.direction ).multiplyScalar( t ).add( this.origin );\n\n\t}\n\n\tlookAt( v ) {\n\n\t\tthis.direction.copy( v ).sub( this.origin ).normalize();\n\n\t\treturn this;\n\n\t}\n\n\trecast( t ) {\n\n\t\tthis.origin.copy( this.at( t, _vector$2 ) );\n\n\t\treturn this;\n\n\t}\n\n\tclosestPointToPoint( point, target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Ray: .closestPointToPoint() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\ttarget.subVectors( point, this.origin );\n\n\t\tconst directionDistance = target.dot( this.direction );\n\n\t\tif ( directionDistance < 0 ) {\n\n\t\t\treturn target.copy( this.origin );\n\n\t\t}\n\n\t\treturn target.copy( this.direction ).multiplyScalar( directionDistance ).add( this.origin );\n\n\t}\n\n\tdistanceToPoint( point ) {\n\n\t\treturn Math.sqrt( this.distanceSqToPoint( point ) );\n\n\t}\n\n\tdistanceSqToPoint( point ) {\n\n\t\tconst directionDistance = _vector$2.subVectors( point, this.origin ).dot( this.direction );\n\n\t\t// point behind the ray\n\n\t\tif ( directionDistance < 0 ) {\n\n\t\t\treturn this.origin.distanceToSquared( point );\n\n\t\t}\n\n\t\t_vector$2.copy( this.direction ).multiplyScalar( directionDistance ).add( this.origin );\n\n\t\treturn _vector$2.distanceToSquared( point );\n\n\t}\n\n\tdistanceSqToSegment( v0, v1, optionalPointOnRay, optionalPointOnSegment ) {\n\n\t\t// from http://www.geometrictools.com/GTEngine/Include/Mathematics/GteDistRaySegment.h\n\t\t// It returns the min distance between the ray and the segment\n\t\t// defined by v0 and v1\n\t\t// It can also set two optional targets :\n\t\t// - The closest point on the ray\n\t\t// - The closest point on the segment\n\n\t\t_segCenter.copy( v0 ).add( v1 ).multiplyScalar( 0.5 );\n\t\t_segDir.copy( v1 ).sub( v0 ).normalize();\n\t\t_diff.copy( this.origin ).sub( _segCenter );\n\n\t\tconst segExtent = v0.distanceTo( v1 ) * 0.5;\n\t\tconst a01 = - this.direction.dot( _segDir );\n\t\tconst b0 = _diff.dot( this.direction );\n\t\tconst b1 = - _diff.dot( _segDir );\n\t\tconst c = _diff.lengthSq();\n\t\tconst det = Math.abs( 1 - a01 * a01 );\n\t\tlet s0, s1, sqrDist, extDet;\n\n\t\tif ( det > 0 ) {\n\n\t\t\t// The ray and segment are not parallel.\n\n\t\t\ts0 = a01 * b1 - b0;\n\t\t\ts1 = a01 * b0 - b1;\n\t\t\textDet = segExtent * det;\n\n\t\t\tif ( s0 >= 0 ) {\n\n\t\t\t\tif ( s1 >= - extDet ) {\n\n\t\t\t\t\tif ( s1 <= extDet ) {\n\n\t\t\t\t\t\t// region 0\n\t\t\t\t\t\t// Minimum at interior points of ray and segment.\n\n\t\t\t\t\t\tconst invDet = 1 / det;\n\t\t\t\t\t\ts0 *= invDet;\n\t\t\t\t\t\ts1 *= invDet;\n\t\t\t\t\t\tsqrDist = s0 * ( s0 + a01 * s1 + 2 * b0 ) + s1 * ( a01 * s0 + s1 + 2 * b1 ) + c;\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\t// region 1\n\n\t\t\t\t\t\ts1 = segExtent;\n\t\t\t\t\t\ts0 = Math.max( 0, - ( a01 * s1 + b0 ) );\n\t\t\t\t\t\tsqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// region 5\n\n\t\t\t\t\ts1 = - segExtent;\n\t\t\t\t\ts0 = Math.max( 0, - ( a01 * s1 + b0 ) );\n\t\t\t\t\tsqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tif ( s1 <= - extDet ) {\n\n\t\t\t\t\t// region 4\n\n\t\t\t\t\ts0 = Math.max( 0, - ( - a01 * segExtent + b0 ) );\n\t\t\t\t\ts1 = ( s0 > 0 ) ? - segExtent : Math.min( Math.max( - segExtent, - b1 ), segExtent );\n\t\t\t\t\tsqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;\n\n\t\t\t\t} else if ( s1 <= extDet ) {\n\n\t\t\t\t\t// region 3\n\n\t\t\t\t\ts0 = 0;\n\t\t\t\t\ts1 = Math.min( Math.max( - segExtent, - b1 ), segExtent );\n\t\t\t\t\tsqrDist = s1 * ( s1 + 2 * b1 ) + c;\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// region 2\n\n\t\t\t\t\ts0 = Math.max( 0, - ( a01 * segExtent + b0 ) );\n\t\t\t\t\ts1 = ( s0 > 0 ) ? segExtent : Math.min( Math.max( - segExtent, - b1 ), segExtent );\n\t\t\t\t\tsqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\t// Ray and segment are parallel.\n\n\t\t\ts1 = ( a01 > 0 ) ? - segExtent : segExtent;\n\t\t\ts0 = Math.max( 0, - ( a01 * s1 + b0 ) );\n\t\t\tsqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;\n\n\t\t}\n\n\t\tif ( optionalPointOnRay ) {\n\n\t\t\toptionalPointOnRay.copy( this.direction ).multiplyScalar( s0 ).add( this.origin );\n\n\t\t}\n\n\t\tif ( optionalPointOnSegment ) {\n\n\t\t\toptionalPointOnSegment.copy( _segDir ).multiplyScalar( s1 ).add( _segCenter );\n\n\t\t}\n\n\t\treturn sqrDist;\n\n\t}\n\n\tintersectSphere( sphere, target ) {\n\n\t\t_vector$2.subVectors( sphere.center, this.origin );\n\t\tconst tca = _vector$2.dot( this.direction );\n\t\tconst d2 = _vector$2.dot( _vector$2 ) - tca * tca;\n\t\tconst radius2 = sphere.radius * sphere.radius;\n\n\t\tif ( d2 > radius2 ) return null;\n\n\t\tconst thc = Math.sqrt( radius2 - d2 );\n\n\t\t// t0 = first intersect point - entrance on front of sphere\n\t\tconst t0 = tca - thc;\n\n\t\t// t1 = second intersect point - exit point on back of sphere\n\t\tconst t1 = tca + thc;\n\n\t\t// test to see if both t0 and t1 are behind the ray - if so, return null\n\t\tif ( t0 < 0 && t1 < 0 ) return null;\n\n\t\t// test to see if t0 is behind the ray:\n\t\t// if it is, the ray is inside the sphere, so return the second exit point scaled by t1,\n\t\t// in order to always return an intersect point that is in front of the ray.\n\t\tif ( t0 < 0 ) return this.at( t1, target );\n\n\t\t// else t0 is in front of the ray, so return the first collision point scaled by t0\n\t\treturn this.at( t0, target );\n\n\t}\n\n\tintersectsSphere( sphere ) {\n\n\t\treturn this.distanceSqToPoint( sphere.center ) <= ( sphere.radius * sphere.radius );\n\n\t}\n\n\tdistanceToPlane( plane ) {\n\n\t\tconst denominator = plane.normal.dot( this.direction );\n\n\t\tif ( denominator === 0 ) {\n\n\t\t\t// line is coplanar, return origin\n\t\t\tif ( plane.distanceToPoint( this.origin ) === 0 ) {\n\n\t\t\t\treturn 0;\n\n\t\t\t}\n\n\t\t\t// Null is preferable to undefined since undefined means.... it is undefined\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\tconst t = - ( this.origin.dot( plane.normal ) + plane.constant ) / denominator;\n\n\t\t// Return if the ray never intersects the plane\n\n\t\treturn t >= 0 ? t : null;\n\n\t}\n\n\tintersectPlane( plane, target ) {\n\n\t\tconst t = this.distanceToPlane( plane );\n\n\t\tif ( t === null ) {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\treturn this.at( t, target );\n\n\t}\n\n\tintersectsPlane( plane ) {\n\n\t\t// check if the ray lies on the plane first\n\n\t\tconst distToPoint = plane.distanceToPoint( this.origin );\n\n\t\tif ( distToPoint === 0 ) {\n\n\t\t\treturn true;\n\n\t\t}\n\n\t\tconst denominator = plane.normal.dot( this.direction );\n\n\t\tif ( denominator * distToPoint < 0 ) {\n\n\t\t\treturn true;\n\n\t\t}\n\n\t\t// ray origin is behind the plane (and is pointing behind it)\n\n\t\treturn false;\n\n\t}\n\n\tintersectBox( box, target ) {\n\n\t\tlet tmin, tmax, tymin, tymax, tzmin, tzmax;\n\n\t\tconst invdirx = 1 / this.direction.x,\n\t\t\tinvdiry = 1 / this.direction.y,\n\t\t\tinvdirz = 1 / this.direction.z;\n\n\t\tconst origin = this.origin;\n\n\t\tif ( invdirx >= 0 ) {\n\n\t\t\ttmin = ( box.min.x - origin.x ) * invdirx;\n\t\t\ttmax = ( box.max.x - origin.x ) * invdirx;\n\n\t\t} else {\n\n\t\t\ttmin = ( box.max.x - origin.x ) * invdirx;\n\t\t\ttmax = ( box.min.x - origin.x ) * invdirx;\n\n\t\t}\n\n\t\tif ( invdiry >= 0 ) {\n\n\t\t\ttymin = ( box.min.y - origin.y ) * invdiry;\n\t\t\ttymax = ( box.max.y - origin.y ) * invdiry;\n\n\t\t} else {\n\n\t\t\ttymin = ( box.max.y - origin.y ) * invdiry;\n\t\t\ttymax = ( box.min.y - origin.y ) * invdiry;\n\n\t\t}\n\n\t\tif ( ( tmin > tymax ) || ( tymin > tmax ) ) return null;\n\n\t\t// These lines also handle the case where tmin or tmax is NaN\n\t\t// (result of 0 * Infinity). x !== x returns true if x is NaN\n\n\t\tif ( tymin > tmin || tmin !== tmin ) tmin = tymin;\n\n\t\tif ( tymax < tmax || tmax !== tmax ) tmax = tymax;\n\n\t\tif ( invdirz >= 0 ) {\n\n\t\t\ttzmin = ( box.min.z - origin.z ) * invdirz;\n\t\t\ttzmax = ( box.max.z - origin.z ) * invdirz;\n\n\t\t} else {\n\n\t\t\ttzmin = ( box.max.z - origin.z ) * invdirz;\n\t\t\ttzmax = ( box.min.z - origin.z ) * invdirz;\n\n\t\t}\n\n\t\tif ( ( tmin > tzmax ) || ( tzmin > tmax ) ) return null;\n\n\t\tif ( tzmin > tmin || tmin !== tmin ) tmin = tzmin;\n\n\t\tif ( tzmax < tmax || tmax !== tmax ) tmax = tzmax;\n\n\t\t//return point closest to the ray (positive side)\n\n\t\tif ( tmax < 0 ) return null;\n\n\t\treturn this.at( tmin >= 0 ? tmin : tmax, target );\n\n\t}\n\n\tintersectsBox( box ) {\n\n\t\treturn this.intersectBox( box, _vector$2 ) !== null;\n\n\t}\n\n\tintersectTriangle( a, b, c, backfaceCulling, target ) {\n\n\t\t// Compute the offset origin, edges, and normal.\n\n\t\t// from http://www.geometrictools.com/GTEngine/Include/Mathematics/GteIntrRay3Triangle3.h\n\n\t\t_edge1.subVectors( b, a );\n\t\t_edge2.subVectors( c, a );\n\t\t_normal.crossVectors( _edge1, _edge2 );\n\n\t\t// Solve Q + t*D = b1*E1 + b2*E2 (Q = kDiff, D = ray direction,\n\t\t// E1 = kEdge1, E2 = kEdge2, N = Cross(E1,E2)) by\n\t\t//   |Dot(D,N)|*b1 = sign(Dot(D,N))*Dot(D,Cross(Q,E2))\n\t\t//   |Dot(D,N)|*b2 = sign(Dot(D,N))*Dot(D,Cross(E1,Q))\n\t\t//   |Dot(D,N)|*t = -sign(Dot(D,N))*Dot(Q,N)\n\t\tlet DdN = this.direction.dot( _normal );\n\t\tlet sign;\n\n\t\tif ( DdN > 0 ) {\n\n\t\t\tif ( backfaceCulling ) return null;\n\t\t\tsign = 1;\n\n\t\t} else if ( DdN < 0 ) {\n\n\t\t\tsign = - 1;\n\t\t\tDdN = - DdN;\n\n\t\t} else {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\t_diff.subVectors( this.origin, a );\n\t\tconst DdQxE2 = sign * this.direction.dot( _edge2.crossVectors( _diff, _edge2 ) );\n\n\t\t// b1 < 0, no intersection\n\t\tif ( DdQxE2 < 0 ) {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\tconst DdE1xQ = sign * this.direction.dot( _edge1.cross( _diff ) );\n\n\t\t// b2 < 0, no intersection\n\t\tif ( DdE1xQ < 0 ) {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\t// b1+b2 > 1, no intersection\n\t\tif ( DdQxE2 + DdE1xQ > DdN ) {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\t// Line intersects triangle, check if ray does.\n\t\tconst QdN = - sign * _diff.dot( _normal );\n\n\t\t// t < 0, no intersection\n\t\tif ( QdN < 0 ) {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\t// Ray intersects triangle.\n\t\treturn this.at( QdN / DdN, target );\n\n\t}\n\n\tapplyMatrix4( matrix4 ) {\n\n\t\tthis.origin.applyMatrix4( matrix4 );\n\t\tthis.direction.transformDirection( matrix4 );\n\n\t\treturn this;\n\n\t}\n\n\tequals( ray ) {\n\n\t\treturn ray.origin.equals( this.origin ) && ray.direction.equals( this.direction );\n\n\t}\n\n}\n\nclass Matrix4 {\n\n\tconstructor() {\n\n\t\tObject.defineProperty( this, 'isMatrix4', { value: true } );\n\n\t\tthis.elements = [\n\n\t\t\t1, 0, 0, 0,\n\t\t\t0, 1, 0, 0,\n\t\t\t0, 0, 1, 0,\n\t\t\t0, 0, 0, 1\n\n\t\t];\n\n\t\tif ( arguments.length > 0 ) {\n\n\t\t\tconsole.error( 'THREE.Matrix4: the constructor no longer reads arguments. use .set() instead.' );\n\n\t\t}\n\n\t}\n\n\tset( n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44 ) {\n\n\t\tconst te = this.elements;\n\n\t\tte[ 0 ] = n11; te[ 4 ] = n12; te[ 8 ] = n13; te[ 12 ] = n14;\n\t\tte[ 1 ] = n21; te[ 5 ] = n22; te[ 9 ] = n23; te[ 13 ] = n24;\n\t\tte[ 2 ] = n31; te[ 6 ] = n32; te[ 10 ] = n33; te[ 14 ] = n34;\n\t\tte[ 3 ] = n41; te[ 7 ] = n42; te[ 11 ] = n43; te[ 15 ] = n44;\n\n\t\treturn this;\n\n\t}\n\n\tidentity() {\n\n\t\tthis.set(\n\n\t\t\t1, 0, 0, 0,\n\t\t\t0, 1, 0, 0,\n\t\t\t0, 0, 1, 0,\n\t\t\t0, 0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new Matrix4().fromArray( this.elements );\n\n\t}\n\n\tcopy( m ) {\n\n\t\tconst te = this.elements;\n\t\tconst me = m.elements;\n\n\t\tte[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ]; te[ 3 ] = me[ 3 ];\n\t\tte[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ]; te[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ];\n\t\tte[ 8 ] = me[ 8 ]; te[ 9 ] = me[ 9 ]; te[ 10 ] = me[ 10 ]; te[ 11 ] = me[ 11 ];\n\t\tte[ 12 ] = me[ 12 ]; te[ 13 ] = me[ 13 ]; te[ 14 ] = me[ 14 ]; te[ 15 ] = me[ 15 ];\n\n\t\treturn this;\n\n\t}\n\n\tcopyPosition( m ) {\n\n\t\tconst te = this.elements, me = m.elements;\n\n\t\tte[ 12 ] = me[ 12 ];\n\t\tte[ 13 ] = me[ 13 ];\n\t\tte[ 14 ] = me[ 14 ];\n\n\t\treturn this;\n\n\t}\n\n\textractBasis( xAxis, yAxis, zAxis ) {\n\n\t\txAxis.setFromMatrixColumn( this, 0 );\n\t\tyAxis.setFromMatrixColumn( this, 1 );\n\t\tzAxis.setFromMatrixColumn( this, 2 );\n\n\t\treturn this;\n\n\t}\n\n\tmakeBasis( xAxis, yAxis, zAxis ) {\n\n\t\tthis.set(\n\t\t\txAxis.x, yAxis.x, zAxis.x, 0,\n\t\t\txAxis.y, yAxis.y, zAxis.y, 0,\n\t\t\txAxis.z, yAxis.z, zAxis.z, 0,\n\t\t\t0, 0, 0, 1\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\textractRotation( m ) {\n\n\t\t// this method does not support reflection matrices\n\n\t\tconst te = this.elements;\n\t\tconst me = m.elements;\n\n\t\tconst scaleX = 1 / _v1$1.setFromMatrixColumn( m, 0 ).length();\n\t\tconst scaleY = 1 / _v1$1.setFromMatrixColumn( m, 1 ).length();\n\t\tconst scaleZ = 1 / _v1$1.setFromMatrixColumn( m, 2 ).length();\n\n\t\tte[ 0 ] = me[ 0 ] * scaleX;\n\t\tte[ 1 ] = me[ 1 ] * scaleX;\n\t\tte[ 2 ] = me[ 2 ] * scaleX;\n\t\tte[ 3 ] = 0;\n\n\t\tte[ 4 ] = me[ 4 ] * scaleY;\n\t\tte[ 5 ] = me[ 5 ] * scaleY;\n\t\tte[ 6 ] = me[ 6 ] * scaleY;\n\t\tte[ 7 ] = 0;\n\n\t\tte[ 8 ] = me[ 8 ] * scaleZ;\n\t\tte[ 9 ] = me[ 9 ] * scaleZ;\n\t\tte[ 10 ] = me[ 10 ] * scaleZ;\n\t\tte[ 11 ] = 0;\n\n\t\tte[ 12 ] = 0;\n\t\tte[ 13 ] = 0;\n\t\tte[ 14 ] = 0;\n\t\tte[ 15 ] = 1;\n\n\t\treturn this;\n\n\t}\n\n\tmakeRotationFromEuler( euler ) {\n\n\t\tif ( ! ( euler && euler.isEuler ) ) {\n\n\t\t\tconsole.error( 'THREE.Matrix4: .makeRotationFromEuler() now expects a Euler rotation rather than a Vector3 and order.' );\n\n\t\t}\n\n\t\tconst te = this.elements;\n\n\t\tconst x = euler.x, y = euler.y, z = euler.z;\n\t\tconst a = Math.cos( x ), b = Math.sin( x );\n\t\tconst c = Math.cos( y ), d = Math.sin( y );\n\t\tconst e = Math.cos( z ), f = Math.sin( z );\n\n\t\tif ( euler.order === 'XYZ' ) {\n\n\t\t\tconst ae = a * e, af = a * f, be = b * e, bf = b * f;\n\n\t\t\tte[ 0 ] = c * e;\n\t\t\tte[ 4 ] = - c * f;\n\t\t\tte[ 8 ] = d;\n\n\t\t\tte[ 1 ] = af + be * d;\n\t\t\tte[ 5 ] = ae - bf * d;\n\t\t\tte[ 9 ] = - b * c;\n\n\t\t\tte[ 2 ] = bf - ae * d;\n\t\t\tte[ 6 ] = be + af * d;\n\t\t\tte[ 10 ] = a * c;\n\n\t\t} else if ( euler.order === 'YXZ' ) {\n\n\t\t\tconst ce = c * e, cf = c * f, de = d * e, df = d * f;\n\n\t\t\tte[ 0 ] = ce + df * b;\n\t\t\tte[ 4 ] = de * b - cf;\n\t\t\tte[ 8 ] = a * d;\n\n\t\t\tte[ 1 ] = a * f;\n\t\t\tte[ 5 ] = a * e;\n\t\t\tte[ 9 ] = - b;\n\n\t\t\tte[ 2 ] = cf * b - de;\n\t\t\tte[ 6 ] = df + ce * b;\n\t\t\tte[ 10 ] = a * c;\n\n\t\t} else if ( euler.order === 'ZXY' ) {\n\n\t\t\tconst ce = c * e, cf = c * f, de = d * e, df = d * f;\n\n\t\t\tte[ 0 ] = ce - df * b;\n\t\t\tte[ 4 ] = - a * f;\n\t\t\tte[ 8 ] = de + cf * b;\n\n\t\t\tte[ 1 ] = cf + de * b;\n\t\t\tte[ 5 ] = a * e;\n\t\t\tte[ 9 ] = df - ce * b;\n\n\t\t\tte[ 2 ] = - a * d;\n\t\t\tte[ 6 ] = b;\n\t\t\tte[ 10 ] = a * c;\n\n\t\t} else if ( euler.order === 'ZYX' ) {\n\n\t\t\tconst ae = a * e, af = a * f, be = b * e, bf = b * f;\n\n\t\t\tte[ 0 ] = c * e;\n\t\t\tte[ 4 ] = be * d - af;\n\t\t\tte[ 8 ] = ae * d + bf;\n\n\t\t\tte[ 1 ] = c * f;\n\t\t\tte[ 5 ] = bf * d + ae;\n\t\t\tte[ 9 ] = af * d - be;\n\n\t\t\tte[ 2 ] = - d;\n\t\t\tte[ 6 ] = b * c;\n\t\t\tte[ 10 ] = a * c;\n\n\t\t} else if ( euler.order === 'YZX' ) {\n\n\t\t\tconst ac = a * c, ad = a * d, bc = b * c, bd = b * d;\n\n\t\t\tte[ 0 ] = c * e;\n\t\t\tte[ 4 ] = bd - ac * f;\n\t\t\tte[ 8 ] = bc * f + ad;\n\n\t\t\tte[ 1 ] = f;\n\t\t\tte[ 5 ] = a * e;\n\t\t\tte[ 9 ] = - b * e;\n\n\t\t\tte[ 2 ] = - d * e;\n\t\t\tte[ 6 ] = ad * f + bc;\n\t\t\tte[ 10 ] = ac - bd * f;\n\n\t\t} else if ( euler.order === 'XZY' ) {\n\n\t\t\tconst ac = a * c, ad = a * d, bc = b * c, bd = b * d;\n\n\t\t\tte[ 0 ] = c * e;\n\t\t\tte[ 4 ] = - f;\n\t\t\tte[ 8 ] = d * e;\n\n\t\t\tte[ 1 ] = ac * f + bd;\n\t\t\tte[ 5 ] = a * e;\n\t\t\tte[ 9 ] = ad * f - bc;\n\n\t\t\tte[ 2 ] = bc * f - ad;\n\t\t\tte[ 6 ] = b * e;\n\t\t\tte[ 10 ] = bd * f + ac;\n\n\t\t}\n\n\t\t// bottom row\n\t\tte[ 3 ] = 0;\n\t\tte[ 7 ] = 0;\n\t\tte[ 11 ] = 0;\n\n\t\t// last column\n\t\tte[ 12 ] = 0;\n\t\tte[ 13 ] = 0;\n\t\tte[ 14 ] = 0;\n\t\tte[ 15 ] = 1;\n\n\t\treturn this;\n\n\t}\n\n\tmakeRotationFromQuaternion( q ) {\n\n\t\treturn this.compose( _zero, q, _one );\n\n\t}\n\n\tlookAt( eye, target, up ) {\n\n\t\tconst te = this.elements;\n\n\t\t_z.subVectors( eye, target );\n\n\t\tif ( _z.lengthSq() === 0 ) {\n\n\t\t\t// eye and target are in the same position\n\n\t\t\t_z.z = 1;\n\n\t\t}\n\n\t\t_z.normalize();\n\t\t_x.crossVectors( up, _z );\n\n\t\tif ( _x.lengthSq() === 0 ) {\n\n\t\t\t// up and z are parallel\n\n\t\t\tif ( Math.abs( up.z ) === 1 ) {\n\n\t\t\t\t_z.x += 0.0001;\n\n\t\t\t} else {\n\n\t\t\t\t_z.z += 0.0001;\n\n\t\t\t}\n\n\t\t\t_z.normalize();\n\t\t\t_x.crossVectors( up, _z );\n\n\t\t}\n\n\t\t_x.normalize();\n\t\t_y.crossVectors( _z, _x );\n\n\t\tte[ 0 ] = _x.x; te[ 4 ] = _y.x; te[ 8 ] = _z.x;\n\t\tte[ 1 ] = _x.y; te[ 5 ] = _y.y; te[ 9 ] = _z.y;\n\t\tte[ 2 ] = _x.z; te[ 6 ] = _y.z; te[ 10 ] = _z.z;\n\n\t\treturn this;\n\n\t}\n\n\tmultiply( m, n ) {\n\n\t\tif ( n !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Matrix4: .multiply() now only accepts one argument. Use .multiplyMatrices( a, b ) instead.' );\n\t\t\treturn this.multiplyMatrices( m, n );\n\n\t\t}\n\n\t\treturn this.multiplyMatrices( this, m );\n\n\t}\n\n\tpremultiply( m ) {\n\n\t\treturn this.multiplyMatrices( m, this );\n\n\t}\n\n\tmultiplyMatrices( a, b ) {\n\n\t\tconst ae = a.elements;\n\t\tconst be = b.elements;\n\t\tconst te = this.elements;\n\n\t\tconst a11 = ae[ 0 ], a12 = ae[ 4 ], a13 = ae[ 8 ], a14 = ae[ 12 ];\n\t\tconst a21 = ae[ 1 ], a22 = ae[ 5 ], a23 = ae[ 9 ], a24 = ae[ 13 ];\n\t\tconst a31 = ae[ 2 ], a32 = ae[ 6 ], a33 = ae[ 10 ], a34 = ae[ 14 ];\n\t\tconst a41 = ae[ 3 ], a42 = ae[ 7 ], a43 = ae[ 11 ], a44 = ae[ 15 ];\n\n\t\tconst b11 = be[ 0 ], b12 = be[ 4 ], b13 = be[ 8 ], b14 = be[ 12 ];\n\t\tconst b21 = be[ 1 ], b22 = be[ 5 ], b23 = be[ 9 ], b24 = be[ 13 ];\n\t\tconst b31 = be[ 2 ], b32 = be[ 6 ], b33 = be[ 10 ], b34 = be[ 14 ];\n\t\tconst b41 = be[ 3 ], b42 = be[ 7 ], b43 = be[ 11 ], b44 = be[ 15 ];\n\n\t\tte[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31 + a14 * b41;\n\t\tte[ 4 ] = a11 * b12 + a12 * b22 + a13 * b32 + a14 * b42;\n\t\tte[ 8 ] = a11 * b13 + a12 * b23 + a13 * b33 + a14 * b43;\n\t\tte[ 12 ] = a11 * b14 + a12 * b24 + a13 * b34 + a14 * b44;\n\n\t\tte[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31 + a24 * b41;\n\t\tte[ 5 ] = a21 * b12 + a22 * b22 + a23 * b32 + a24 * b42;\n\t\tte[ 9 ] = a21 * b13 + a22 * b23 + a23 * b33 + a24 * b43;\n\t\tte[ 13 ] = a21 * b14 + a22 * b24 + a23 * b34 + a24 * b44;\n\n\t\tte[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31 + a34 * b41;\n\t\tte[ 6 ] = a31 * b12 + a32 * b22 + a33 * b32 + a34 * b42;\n\t\tte[ 10 ] = a31 * b13 + a32 * b23 + a33 * b33 + a34 * b43;\n\t\tte[ 14 ] = a31 * b14 + a32 * b24 + a33 * b34 + a34 * b44;\n\n\t\tte[ 3 ] = a41 * b11 + a42 * b21 + a43 * b31 + a44 * b41;\n\t\tte[ 7 ] = a41 * b12 + a42 * b22 + a43 * b32 + a44 * b42;\n\t\tte[ 11 ] = a41 * b13 + a42 * b23 + a43 * b33 + a44 * b43;\n\t\tte[ 15 ] = a41 * b14 + a42 * b24 + a43 * b34 + a44 * b44;\n\n\t\treturn this;\n\n\t}\n\n\tmultiplyScalar( s ) {\n\n\t\tconst te = this.elements;\n\n\t\tte[ 0 ] *= s; te[ 4 ] *= s; te[ 8 ] *= s; te[ 12 ] *= s;\n\t\tte[ 1 ] *= s; te[ 5 ] *= s; te[ 9 ] *= s; te[ 13 ] *= s;\n\t\tte[ 2 ] *= s; te[ 6 ] *= s; te[ 10 ] *= s; te[ 14 ] *= s;\n\t\tte[ 3 ] *= s; te[ 7 ] *= s; te[ 11 ] *= s; te[ 15 ] *= s;\n\n\t\treturn this;\n\n\t}\n\n\tdeterminant() {\n\n\t\tconst te = this.elements;\n\n\t\tconst n11 = te[ 0 ], n12 = te[ 4 ], n13 = te[ 8 ], n14 = te[ 12 ];\n\t\tconst n21 = te[ 1 ], n22 = te[ 5 ], n23 = te[ 9 ], n24 = te[ 13 ];\n\t\tconst n31 = te[ 2 ], n32 = te[ 6 ], n33 = te[ 10 ], n34 = te[ 14 ];\n\t\tconst n41 = te[ 3 ], n42 = te[ 7 ], n43 = te[ 11 ], n44 = te[ 15 ];\n\n\t\t//TODO: make this more efficient\n\t\t//( based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm )\n\n\t\treturn (\n\t\t\tn41 * (\n\t\t\t\t+ n14 * n23 * n32\n\t\t\t\t - n13 * n24 * n32\n\t\t\t\t - n14 * n22 * n33\n\t\t\t\t + n12 * n24 * n33\n\t\t\t\t + n13 * n22 * n34\n\t\t\t\t - n12 * n23 * n34\n\t\t\t) +\n\t\t\tn42 * (\n\t\t\t\t+ n11 * n23 * n34\n\t\t\t\t - n11 * n24 * n33\n\t\t\t\t + n14 * n21 * n33\n\t\t\t\t - n13 * n21 * n34\n\t\t\t\t + n13 * n24 * n31\n\t\t\t\t - n14 * n23 * n31\n\t\t\t) +\n\t\t\tn43 * (\n\t\t\t\t+ n11 * n24 * n32\n\t\t\t\t - n11 * n22 * n34\n\t\t\t\t - n14 * n21 * n32\n\t\t\t\t + n12 * n21 * n34\n\t\t\t\t + n14 * n22 * n31\n\t\t\t\t - n12 * n24 * n31\n\t\t\t) +\n\t\t\tn44 * (\n\t\t\t\t- n13 * n22 * n31\n\t\t\t\t - n11 * n23 * n32\n\t\t\t\t + n11 * n22 * n33\n\t\t\t\t + n13 * n21 * n32\n\t\t\t\t - n12 * n21 * n33\n\t\t\t\t + n12 * n23 * n31\n\t\t\t)\n\n\t\t);\n\n\t}\n\n\ttranspose() {\n\n\t\tconst te = this.elements;\n\t\tlet tmp;\n\n\t\ttmp = te[ 1 ]; te[ 1 ] = te[ 4 ]; te[ 4 ] = tmp;\n\t\ttmp = te[ 2 ]; te[ 2 ] = te[ 8 ]; te[ 8 ] = tmp;\n\t\ttmp = te[ 6 ]; te[ 6 ] = te[ 9 ]; te[ 9 ] = tmp;\n\n\t\ttmp = te[ 3 ]; te[ 3 ] = te[ 12 ]; te[ 12 ] = tmp;\n\t\ttmp = te[ 7 ]; te[ 7 ] = te[ 13 ]; te[ 13 ] = tmp;\n\t\ttmp = te[ 11 ]; te[ 11 ] = te[ 14 ]; te[ 14 ] = tmp;\n\n\t\treturn this;\n\n\t}\n\n\tsetPosition( x, y, z ) {\n\n\t\tconst te = this.elements;\n\n\t\tif ( x.isVector3 ) {\n\n\t\t\tte[ 12 ] = x.x;\n\t\t\tte[ 13 ] = x.y;\n\t\t\tte[ 14 ] = x.z;\n\n\t\t} else {\n\n\t\t\tte[ 12 ] = x;\n\t\t\tte[ 13 ] = y;\n\t\t\tte[ 14 ] = z;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tinvert() {\n\n\t\t// based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm\n\t\tconst te = this.elements,\n\n\t\t\tn11 = te[ 0 ], n21 = te[ 1 ], n31 = te[ 2 ], n41 = te[ 3 ],\n\t\t\tn12 = te[ 4 ], n22 = te[ 5 ], n32 = te[ 6 ], n42 = te[ 7 ],\n\t\t\tn13 = te[ 8 ], n23 = te[ 9 ], n33 = te[ 10 ], n43 = te[ 11 ],\n\t\t\tn14 = te[ 12 ], n24 = te[ 13 ], n34 = te[ 14 ], n44 = te[ 15 ],\n\n\t\t\tt11 = n23 * n34 * n42 - n24 * n33 * n42 + n24 * n32 * n43 - n22 * n34 * n43 - n23 * n32 * n44 + n22 * n33 * n44,\n\t\t\tt12 = n14 * n33 * n42 - n13 * n34 * n42 - n14 * n32 * n43 + n12 * n34 * n43 + n13 * n32 * n44 - n12 * n33 * n44,\n\t\t\tt13 = n13 * n24 * n42 - n14 * n23 * n42 + n14 * n22 * n43 - n12 * n24 * n43 - n13 * n22 * n44 + n12 * n23 * n44,\n\t\t\tt14 = n14 * n23 * n32 - n13 * n24 * n32 - n14 * n22 * n33 + n12 * n24 * n33 + n13 * n22 * n34 - n12 * n23 * n34;\n\n\t\tconst det = n11 * t11 + n21 * t12 + n31 * t13 + n41 * t14;\n\n\t\tif ( det === 0 ) return this.set( 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 );\n\n\t\tconst detInv = 1 / det;\n\n\t\tte[ 0 ] = t11 * detInv;\n\t\tte[ 1 ] = ( n24 * n33 * n41 - n23 * n34 * n41 - n24 * n31 * n43 + n21 * n34 * n43 + n23 * n31 * n44 - n21 * n33 * n44 ) * detInv;\n\t\tte[ 2 ] = ( n22 * n34 * n41 - n24 * n32 * n41 + n24 * n31 * n42 - n21 * n34 * n42 - n22 * n31 * n44 + n21 * n32 * n44 ) * detInv;\n\t\tte[ 3 ] = ( n23 * n32 * n41 - n22 * n33 * n41 - n23 * n31 * n42 + n21 * n33 * n42 + n22 * n31 * n43 - n21 * n32 * n43 ) * detInv;\n\n\t\tte[ 4 ] = t12 * detInv;\n\t\tte[ 5 ] = ( n13 * n34 * n41 - n14 * n33 * n41 + n14 * n31 * n43 - n11 * n34 * n43 - n13 * n31 * n44 + n11 * n33 * n44 ) * detInv;\n\t\tte[ 6 ] = ( n14 * n32 * n41 - n12 * n34 * n41 - n14 * n31 * n42 + n11 * n34 * n42 + n12 * n31 * n44 - n11 * n32 * n44 ) * detInv;\n\t\tte[ 7 ] = ( n12 * n33 * n41 - n13 * n32 * n41 + n13 * n31 * n42 - n11 * n33 * n42 - n12 * n31 * n43 + n11 * n32 * n43 ) * detInv;\n\n\t\tte[ 8 ] = t13 * detInv;\n\t\tte[ 9 ] = ( n14 * n23 * n41 - n13 * n24 * n41 - n14 * n21 * n43 + n11 * n24 * n43 + n13 * n21 * n44 - n11 * n23 * n44 ) * detInv;\n\t\tte[ 10 ] = ( n12 * n24 * n41 - n14 * n22 * n41 + n14 * n21 * n42 - n11 * n24 * n42 - n12 * n21 * n44 + n11 * n22 * n44 ) * detInv;\n\t\tte[ 11 ] = ( n13 * n22 * n41 - n12 * n23 * n41 - n13 * n21 * n42 + n11 * n23 * n42 + n12 * n21 * n43 - n11 * n22 * n43 ) * detInv;\n\n\t\tte[ 12 ] = t14 * detInv;\n\t\tte[ 13 ] = ( n13 * n24 * n31 - n14 * n23 * n31 + n14 * n21 * n33 - n11 * n24 * n33 - n13 * n21 * n34 + n11 * n23 * n34 ) * detInv;\n\t\tte[ 14 ] = ( n14 * n22 * n31 - n12 * n24 * n31 - n14 * n21 * n32 + n11 * n24 * n32 + n12 * n21 * n34 - n11 * n22 * n34 ) * detInv;\n\t\tte[ 15 ] = ( n12 * n23 * n31 - n13 * n22 * n31 + n13 * n21 * n32 - n11 * n23 * n32 - n12 * n21 * n33 + n11 * n22 * n33 ) * detInv;\n\n\t\treturn this;\n\n\t}\n\n\tscale( v ) {\n\n\t\tconst te = this.elements;\n\t\tconst x = v.x, y = v.y, z = v.z;\n\n\t\tte[ 0 ] *= x; te[ 4 ] *= y; te[ 8 ] *= z;\n\t\tte[ 1 ] *= x; te[ 5 ] *= y; te[ 9 ] *= z;\n\t\tte[ 2 ] *= x; te[ 6 ] *= y; te[ 10 ] *= z;\n\t\tte[ 3 ] *= x; te[ 7 ] *= y; te[ 11 ] *= z;\n\n\t\treturn this;\n\n\t}\n\n\tgetMaxScaleOnAxis() {\n\n\t\tconst te = this.elements;\n\n\t\tconst scaleXSq = te[ 0 ] * te[ 0 ] + te[ 1 ] * te[ 1 ] + te[ 2 ] * te[ 2 ];\n\t\tconst scaleYSq = te[ 4 ] * te[ 4 ] + te[ 5 ] * te[ 5 ] + te[ 6 ] * te[ 6 ];\n\t\tconst scaleZSq = te[ 8 ] * te[ 8 ] + te[ 9 ] * te[ 9 ] + te[ 10 ] * te[ 10 ];\n\n\t\treturn Math.sqrt( Math.max( scaleXSq, scaleYSq, scaleZSq ) );\n\n\t}\n\n\tmakeTranslation( x, y, z ) {\n\n\t\tthis.set(\n\n\t\t\t1, 0, 0, x,\n\t\t\t0, 1, 0, y,\n\t\t\t0, 0, 1, z,\n\t\t\t0, 0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tmakeRotationX( theta ) {\n\n\t\tconst c = Math.cos( theta ), s = Math.sin( theta );\n\n\t\tthis.set(\n\n\t\t\t1, 0, 0, 0,\n\t\t\t0, c, - s, 0,\n\t\t\t0, s, c, 0,\n\t\t\t0, 0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tmakeRotationY( theta ) {\n\n\t\tconst c = Math.cos( theta ), s = Math.sin( theta );\n\n\t\tthis.set(\n\n\t\t\t c, 0, s, 0,\n\t\t\t 0, 1, 0, 0,\n\t\t\t- s, 0, c, 0,\n\t\t\t 0, 0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tmakeRotationZ( theta ) {\n\n\t\tconst c = Math.cos( theta ), s = Math.sin( theta );\n\n\t\tthis.set(\n\n\t\t\tc, - s, 0, 0,\n\t\t\ts, c, 0, 0,\n\t\t\t0, 0, 1, 0,\n\t\t\t0, 0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tmakeRotationAxis( axis, angle ) {\n\n\t\t// Based on http://www.gamedev.net/reference/articles/article1199.asp\n\n\t\tconst c = Math.cos( angle );\n\t\tconst s = Math.sin( angle );\n\t\tconst t = 1 - c;\n\t\tconst x = axis.x, y = axis.y, z = axis.z;\n\t\tconst tx = t * x, ty = t * y;\n\n\t\tthis.set(\n\n\t\t\ttx * x + c, tx * y - s * z, tx * z + s * y, 0,\n\t\t\ttx * y + s * z, ty * y + c, ty * z - s * x, 0,\n\t\t\ttx * z - s * y, ty * z + s * x, t * z * z + c, 0,\n\t\t\t0, 0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tmakeScale( x, y, z ) {\n\n\t\tthis.set(\n\n\t\t\tx, 0, 0, 0,\n\t\t\t0, y, 0, 0,\n\t\t\t0, 0, z, 0,\n\t\t\t0, 0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tmakeShear( x, y, z ) {\n\n\t\tthis.set(\n\n\t\t\t1, y, z, 0,\n\t\t\tx, 1, z, 0,\n\t\t\tx, y, 1, 0,\n\t\t\t0, 0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tcompose( position, quaternion, scale ) {\n\n\t\tconst te = this.elements;\n\n\t\tconst x = quaternion._x, y = quaternion._y, z = quaternion._z, w = quaternion._w;\n\t\tconst x2 = x + x,\ty2 = y + y, z2 = z + z;\n\t\tconst xx = x * x2, xy = x * y2, xz = x * z2;\n\t\tconst yy = y * y2, yz = y * z2, zz = z * z2;\n\t\tconst wx = w * x2, wy = w * y2, wz = w * z2;\n\n\t\tconst sx = scale.x, sy = scale.y, sz = scale.z;\n\n\t\tte[ 0 ] = ( 1 - ( yy + zz ) ) * sx;\n\t\tte[ 1 ] = ( xy + wz ) * sx;\n\t\tte[ 2 ] = ( xz - wy ) * sx;\n\t\tte[ 3 ] = 0;\n\n\t\tte[ 4 ] = ( xy - wz ) * sy;\n\t\tte[ 5 ] = ( 1 - ( xx + zz ) ) * sy;\n\t\tte[ 6 ] = ( yz + wx ) * sy;\n\t\tte[ 7 ] = 0;\n\n\t\tte[ 8 ] = ( xz + wy ) * sz;\n\t\tte[ 9 ] = ( yz - wx ) * sz;\n\t\tte[ 10 ] = ( 1 - ( xx + yy ) ) * sz;\n\t\tte[ 11 ] = 0;\n\n\t\tte[ 12 ] = position.x;\n\t\tte[ 13 ] = position.y;\n\t\tte[ 14 ] = position.z;\n\t\tte[ 15 ] = 1;\n\n\t\treturn this;\n\n\t}\n\n\tdecompose( position, quaternion, scale ) {\n\n\t\tconst te = this.elements;\n\n\t\tlet sx = _v1$1.set( te[ 0 ], te[ 1 ], te[ 2 ] ).length();\n\t\tconst sy = _v1$1.set( te[ 4 ], te[ 5 ], te[ 6 ] ).length();\n\t\tconst sz = _v1$1.set( te[ 8 ], te[ 9 ], te[ 10 ] ).length();\n\n\t\t// if determine is negative, we need to invert one scale\n\t\tconst det = this.determinant();\n\t\tif ( det < 0 ) sx = - sx;\n\n\t\tposition.x = te[ 12 ];\n\t\tposition.y = te[ 13 ];\n\t\tposition.z = te[ 14 ];\n\n\t\t// scale the rotation part\n\t\t_m1.copy( this );\n\n\t\tconst invSX = 1 / sx;\n\t\tconst invSY = 1 / sy;\n\t\tconst invSZ = 1 / sz;\n\n\t\t_m1.elements[ 0 ] *= invSX;\n\t\t_m1.elements[ 1 ] *= invSX;\n\t\t_m1.elements[ 2 ] *= invSX;\n\n\t\t_m1.elements[ 4 ] *= invSY;\n\t\t_m1.elements[ 5 ] *= invSY;\n\t\t_m1.elements[ 6 ] *= invSY;\n\n\t\t_m1.elements[ 8 ] *= invSZ;\n\t\t_m1.elements[ 9 ] *= invSZ;\n\t\t_m1.elements[ 10 ] *= invSZ;\n\n\t\tquaternion.setFromRotationMatrix( _m1 );\n\n\t\tscale.x = sx;\n\t\tscale.y = sy;\n\t\tscale.z = sz;\n\n\t\treturn this;\n\n\t}\n\n\tmakePerspective( left, right, top, bottom, near, far ) {\n\n\t\tif ( far === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Matrix4: .makePerspective() has been redefined and has a new signature. Please check the docs.' );\n\n\t\t}\n\n\t\tconst te = this.elements;\n\t\tconst x = 2 * near / ( right - left );\n\t\tconst y = 2 * near / ( top - bottom );\n\n\t\tconst a = ( right + left ) / ( right - left );\n\t\tconst b = ( top + bottom ) / ( top - bottom );\n\t\tconst c = - ( far + near ) / ( far - near );\n\t\tconst d = - 2 * far * near / ( far - near );\n\n\t\tte[ 0 ] = x;\tte[ 4 ] = 0;\tte[ 8 ] = a;\tte[ 12 ] = 0;\n\t\tte[ 1 ] = 0;\tte[ 5 ] = y;\tte[ 9 ] = b;\tte[ 13 ] = 0;\n\t\tte[ 2 ] = 0;\tte[ 6 ] = 0;\tte[ 10 ] = c;\tte[ 14 ] = d;\n\t\tte[ 3 ] = 0;\tte[ 7 ] = 0;\tte[ 11 ] = - 1;\tte[ 15 ] = 0;\n\n\t\treturn this;\n\n\t}\n\n\tmakeOrthographic( left, right, top, bottom, near, far ) {\n\n\t\tconst te = this.elements;\n\t\tconst w = 1.0 / ( right - left );\n\t\tconst h = 1.0 / ( top - bottom );\n\t\tconst p = 1.0 / ( far - near );\n\n\t\tconst x = ( right + left ) * w;\n\t\tconst y = ( top + bottom ) * h;\n\t\tconst z = ( far + near ) * p;\n\n\t\tte[ 0 ] = 2 * w;\tte[ 4 ] = 0;\tte[ 8 ] = 0;\tte[ 12 ] = - x;\n\t\tte[ 1 ] = 0;\tte[ 5 ] = 2 * h;\tte[ 9 ] = 0;\tte[ 13 ] = - y;\n\t\tte[ 2 ] = 0;\tte[ 6 ] = 0;\tte[ 10 ] = - 2 * p;\tte[ 14 ] = - z;\n\t\tte[ 3 ] = 0;\tte[ 7 ] = 0;\tte[ 11 ] = 0;\tte[ 15 ] = 1;\n\n\t\treturn this;\n\n\t}\n\n\tequals( matrix ) {\n\n\t\tconst te = this.elements;\n\t\tconst me = matrix.elements;\n\n\t\tfor ( let i = 0; i < 16; i ++ ) {\n\n\t\t\tif ( te[ i ] !== me[ i ] ) return false;\n\n\t\t}\n\n\t\treturn true;\n\n\t}\n\n\tfromArray( array, offset = 0 ) {\n\n\t\tfor ( let i = 0; i < 16; i ++ ) {\n\n\t\t\tthis.elements[ i ] = array[ i + offset ];\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tconst te = this.elements;\n\n\t\tarray[ offset ] = te[ 0 ];\n\t\tarray[ offset + 1 ] = te[ 1 ];\n\t\tarray[ offset + 2 ] = te[ 2 ];\n\t\tarray[ offset + 3 ] = te[ 3 ];\n\n\t\tarray[ offset + 4 ] = te[ 4 ];\n\t\tarray[ offset + 5 ] = te[ 5 ];\n\t\tarray[ offset + 6 ] = te[ 6 ];\n\t\tarray[ offset + 7 ] = te[ 7 ];\n\n\t\tarray[ offset + 8 ] = te[ 8 ];\n\t\tarray[ offset + 9 ] = te[ 9 ];\n\t\tarray[ offset + 10 ] = te[ 10 ];\n\t\tarray[ offset + 11 ] = te[ 11 ];\n\n\t\tarray[ offset + 12 ] = te[ 12 ];\n\t\tarray[ offset + 13 ] = te[ 13 ];\n\t\tarray[ offset + 14 ] = te[ 14 ];\n\t\tarray[ offset + 15 ] = te[ 15 ];\n\n\t\treturn array;\n\n\t}\n\n}\n\nconst _v1$1 = /*@__PURE__*/ new Vector3();\nconst _m1 = /*@__PURE__*/ new Matrix4();\nconst _zero = /*@__PURE__*/ new Vector3( 0, 0, 0 );\nconst _one = /*@__PURE__*/ new Vector3( 1, 1, 1 );\nconst _x = /*@__PURE__*/ new Vector3();\nconst _y = /*@__PURE__*/ new Vector3();\nconst _z = /*@__PURE__*/ new Vector3();\n\nclass Euler {\n\n\tconstructor( x = 0, y = 0, z = 0, order = Euler.DefaultOrder ) {\n\n\t\tObject.defineProperty( this, 'isEuler', { value: true } );\n\n\t\tthis._x = x;\n\t\tthis._y = y;\n\t\tthis._z = z;\n\t\tthis._order = order;\n\n\t}\n\n\tget x() {\n\n\t\treturn this._x;\n\n\t}\n\n\tset x( value ) {\n\n\t\tthis._x = value;\n\t\tthis._onChangeCallback();\n\n\t}\n\n\tget y() {\n\n\t\treturn this._y;\n\n\t}\n\n\tset y( value ) {\n\n\t\tthis._y = value;\n\t\tthis._onChangeCallback();\n\n\t}\n\n\tget z() {\n\n\t\treturn this._z;\n\n\t}\n\n\tset z( value ) {\n\n\t\tthis._z = value;\n\t\tthis._onChangeCallback();\n\n\t}\n\n\tget order() {\n\n\t\treturn this._order;\n\n\t}\n\n\tset order( value ) {\n\n\t\tthis._order = value;\n\t\tthis._onChangeCallback();\n\n\t}\n\n\tset( x, y, z, order ) {\n\n\t\tthis._x = x;\n\t\tthis._y = y;\n\t\tthis._z = z;\n\t\tthis._order = order || this._order;\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor( this._x, this._y, this._z, this._order );\n\n\t}\n\n\tcopy( euler ) {\n\n\t\tthis._x = euler._x;\n\t\tthis._y = euler._y;\n\t\tthis._z = euler._z;\n\t\tthis._order = euler._order;\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tsetFromRotationMatrix( m, order, update ) {\n\n\t\tconst clamp = MathUtils.clamp;\n\n\t\t// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)\n\n\t\tconst te = m.elements;\n\t\tconst m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ];\n\t\tconst m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ];\n\t\tconst m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];\n\n\t\torder = order || this._order;\n\n\t\tswitch ( order ) {\n\n\t\t\tcase 'XYZ':\n\n\t\t\t\tthis._y = Math.asin( clamp( m13, - 1, 1 ) );\n\n\t\t\t\tif ( Math.abs( m13 ) < 0.9999999 ) {\n\n\t\t\t\t\tthis._x = Math.atan2( - m23, m33 );\n\t\t\t\t\tthis._z = Math.atan2( - m12, m11 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthis._x = Math.atan2( m32, m22 );\n\t\t\t\t\tthis._z = 0;\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'YXZ':\n\n\t\t\t\tthis._x = Math.asin( - clamp( m23, - 1, 1 ) );\n\n\t\t\t\tif ( Math.abs( m23 ) < 0.9999999 ) {\n\n\t\t\t\t\tthis._y = Math.atan2( m13, m33 );\n\t\t\t\t\tthis._z = Math.atan2( m21, m22 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthis._y = Math.atan2( - m31, m11 );\n\t\t\t\t\tthis._z = 0;\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'ZXY':\n\n\t\t\t\tthis._x = Math.asin( clamp( m32, - 1, 1 ) );\n\n\t\t\t\tif ( Math.abs( m32 ) < 0.9999999 ) {\n\n\t\t\t\t\tthis._y = Math.atan2( - m31, m33 );\n\t\t\t\t\tthis._z = Math.atan2( - m12, m22 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthis._y = 0;\n\t\t\t\t\tthis._z = Math.atan2( m21, m11 );\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'ZYX':\n\n\t\t\t\tthis._y = Math.asin( - clamp( m31, - 1, 1 ) );\n\n\t\t\t\tif ( Math.abs( m31 ) < 0.9999999 ) {\n\n\t\t\t\t\tthis._x = Math.atan2( m32, m33 );\n\t\t\t\t\tthis._z = Math.atan2( m21, m11 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthis._x = 0;\n\t\t\t\t\tthis._z = Math.atan2( - m12, m22 );\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'YZX':\n\n\t\t\t\tthis._z = Math.asin( clamp( m21, - 1, 1 ) );\n\n\t\t\t\tif ( Math.abs( m21 ) < 0.9999999 ) {\n\n\t\t\t\t\tthis._x = Math.atan2( - m23, m22 );\n\t\t\t\t\tthis._y = Math.atan2( - m31, m11 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthis._x = 0;\n\t\t\t\t\tthis._y = Math.atan2( m13, m33 );\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'XZY':\n\n\t\t\t\tthis._z = Math.asin( - clamp( m12, - 1, 1 ) );\n\n\t\t\t\tif ( Math.abs( m12 ) < 0.9999999 ) {\n\n\t\t\t\t\tthis._x = Math.atan2( m32, m22 );\n\t\t\t\t\tthis._y = Math.atan2( m13, m11 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthis._x = Math.atan2( - m23, m33 );\n\t\t\t\t\tthis._y = 0;\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\n\t\t\t\tconsole.warn( 'THREE.Euler: .setFromRotationMatrix() encountered an unknown order: ' + order );\n\n\t\t}\n\n\t\tthis._order = order;\n\n\t\tif ( update !== false ) this._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tsetFromQuaternion( q, order, update ) {\n\n\t\t_matrix.makeRotationFromQuaternion( q );\n\n\t\treturn this.setFromRotationMatrix( _matrix, order, update );\n\n\t}\n\n\tsetFromVector3( v, order ) {\n\n\t\treturn this.set( v.x, v.y, v.z, order || this._order );\n\n\t}\n\n\treorder( newOrder ) {\n\n\t\t// WARNING: this discards revolution information -bhouston\n\n\t\t_quaternion$1.setFromEuler( this );\n\n\t\treturn this.setFromQuaternion( _quaternion$1, newOrder );\n\n\t}\n\n\tequals( euler ) {\n\n\t\treturn ( euler._x === this._x ) && ( euler._y === this._y ) && ( euler._z === this._z ) && ( euler._order === this._order );\n\n\t}\n\n\tfromArray( array ) {\n\n\t\tthis._x = array[ 0 ];\n\t\tthis._y = array[ 1 ];\n\t\tthis._z = array[ 2 ];\n\t\tif ( array[ 3 ] !== undefined ) this._order = array[ 3 ];\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tarray[ offset ] = this._x;\n\t\tarray[ offset + 1 ] = this._y;\n\t\tarray[ offset + 2 ] = this._z;\n\t\tarray[ offset + 3 ] = this._order;\n\n\t\treturn array;\n\n\t}\n\n\ttoVector3( optionalResult ) {\n\n\t\tif ( optionalResult ) {\n\n\t\t\treturn optionalResult.set( this._x, this._y, this._z );\n\n\t\t} else {\n\n\t\t\treturn new Vector3( this._x, this._y, this._z );\n\n\t\t}\n\n\t}\n\n\t_onChange( callback ) {\n\n\t\tthis._onChangeCallback = callback;\n\n\t\treturn this;\n\n\t}\n\n\t_onChangeCallback() {}\n\n}\n\nEuler.DefaultOrder = 'XYZ';\nEuler.RotationOrders = [ 'XYZ', 'YZX', 'ZXY', 'XZY', 'YXZ', 'ZYX' ];\n\nconst _matrix = /*@__PURE__*/ new Matrix4();\nconst _quaternion$1 = /*@__PURE__*/ new Quaternion();\n\nclass Layers {\n\n\tconstructor() {\n\n\t\tthis.mask = 1 | 0;\n\n\t}\n\n\tset( channel ) {\n\n\t\tthis.mask = 1 << channel | 0;\n\n\t}\n\n\tenable( channel ) {\n\n\t\tthis.mask |= 1 << channel | 0;\n\n\t}\n\n\tenableAll() {\n\n\t\tthis.mask = 0xffffffff | 0;\n\n\t}\n\n\ttoggle( channel ) {\n\n\t\tthis.mask ^= 1 << channel | 0;\n\n\t}\n\n\tdisable( channel ) {\n\n\t\tthis.mask &= ~ ( 1 << channel | 0 );\n\n\t}\n\n\tdisableAll() {\n\n\t\tthis.mask = 0;\n\n\t}\n\n\ttest( layers ) {\n\n\t\treturn ( this.mask & layers.mask ) !== 0;\n\n\t}\n\n}\n\nlet _object3DId = 0;\n\nconst _v1$2 = new Vector3();\nconst _q1 = new Quaternion();\nconst _m1$1 = new Matrix4();\nconst _target = new Vector3();\n\nconst _position = new Vector3();\nconst _scale = new Vector3();\nconst _quaternion$2 = new Quaternion();\n\nconst _xAxis = new Vector3( 1, 0, 0 );\nconst _yAxis = new Vector3( 0, 1, 0 );\nconst _zAxis = new Vector3( 0, 0, 1 );\n\nconst _addedEvent = { type: 'added' };\nconst _removedEvent = { type: 'removed' };\n\nfunction Object3D() {\n\n\tObject.defineProperty( this, 'id', { value: _object3DId ++ } );\n\n\tthis.uuid = MathUtils.generateUUID();\n\n\tthis.name = '';\n\tthis.type = 'Object3D';\n\n\tthis.parent = null;\n\tthis.children = [];\n\n\tthis.up = Object3D.DefaultUp.clone();\n\n\tconst position = new Vector3();\n\tconst rotation = new Euler();\n\tconst quaternion = new Quaternion();\n\tconst scale = new Vector3( 1, 1, 1 );\n\n\tfunction onRotationChange() {\n\n\t\tquaternion.setFromEuler( rotation, false );\n\n\t}\n\n\tfunction onQuaternionChange() {\n\n\t\trotation.setFromQuaternion( quaternion, undefined, false );\n\n\t}\n\n\trotation._onChange( onRotationChange );\n\tquaternion._onChange( onQuaternionChange );\n\n\tObject.defineProperties( this, {\n\t\tposition: {\n\t\t\tconfigurable: true,\n\t\t\tenumerable: true,\n\t\t\tvalue: position\n\t\t},\n\t\trotation: {\n\t\t\tconfigurable: true,\n\t\t\tenumerable: true,\n\t\t\tvalue: rotation\n\t\t},\n\t\tquaternion: {\n\t\t\tconfigurable: true,\n\t\t\tenumerable: true,\n\t\t\tvalue: quaternion\n\t\t},\n\t\tscale: {\n\t\t\tconfigurable: true,\n\t\t\tenumerable: true,\n\t\t\tvalue: scale\n\t\t},\n\t\tmodelViewMatrix: {\n\t\t\tvalue: new Matrix4()\n\t\t},\n\t\tnormalMatrix: {\n\t\t\tvalue: new Matrix3()\n\t\t}\n\t} );\n\n\tthis.matrix = new Matrix4();\n\tthis.matrixWorld = new Matrix4();\n\n\tthis.matrixAutoUpdate = Object3D.DefaultMatrixAutoUpdate;\n\tthis.matrixWorldNeedsUpdate = false;\n\n\tthis.layers = new Layers();\n\tthis.visible = true;\n\n\tthis.castShadow = false;\n\tthis.receiveShadow = false;\n\n\tthis.frustumCulled = true;\n\tthis.renderOrder = 0;\n\n\tthis.animations = [];\n\n\tthis.userData = {};\n\n}\n\nObject3D.DefaultUp = new Vector3( 0, 1, 0 );\nObject3D.DefaultMatrixAutoUpdate = true;\n\nObject3D.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {\n\n\tconstructor: Object3D,\n\n\tisObject3D: true,\n\n\tonBeforeRender: function () {},\n\tonAfterRender: function () {},\n\n\tapplyMatrix4: function ( matrix ) {\n\n\t\tif ( this.matrixAutoUpdate ) this.updateMatrix();\n\n\t\tthis.matrix.premultiply( matrix );\n\n\t\tthis.matrix.decompose( this.position, this.quaternion, this.scale );\n\n\t},\n\n\tapplyQuaternion: function ( q ) {\n\n\t\tthis.quaternion.premultiply( q );\n\n\t\treturn this;\n\n\t},\n\n\tsetRotationFromAxisAngle: function ( axis, angle ) {\n\n\t\t// assumes axis is normalized\n\n\t\tthis.quaternion.setFromAxisAngle( axis, angle );\n\n\t},\n\n\tsetRotationFromEuler: function ( euler ) {\n\n\t\tthis.quaternion.setFromEuler( euler, true );\n\n\t},\n\n\tsetRotationFromMatrix: function ( m ) {\n\n\t\t// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)\n\n\t\tthis.quaternion.setFromRotationMatrix( m );\n\n\t},\n\n\tsetRotationFromQuaternion: function ( q ) {\n\n\t\t// assumes q is normalized\n\n\t\tthis.quaternion.copy( q );\n\n\t},\n\n\trotateOnAxis: function ( axis, angle ) {\n\n\t\t// rotate object on axis in object space\n\t\t// axis is assumed to be normalized\n\n\t\t_q1.setFromAxisAngle( axis, angle );\n\n\t\tthis.quaternion.multiply( _q1 );\n\n\t\treturn this;\n\n\t},\n\n\trotateOnWorldAxis: function ( axis, angle ) {\n\n\t\t// rotate object on axis in world space\n\t\t// axis is assumed to be normalized\n\t\t// method assumes no rotated parent\n\n\t\t_q1.setFromAxisAngle( axis, angle );\n\n\t\tthis.quaternion.premultiply( _q1 );\n\n\t\treturn this;\n\n\t},\n\n\trotateX: function ( angle ) {\n\n\t\treturn this.rotateOnAxis( _xAxis, angle );\n\n\t},\n\n\trotateY: function ( angle ) {\n\n\t\treturn this.rotateOnAxis( _yAxis, angle );\n\n\t},\n\n\trotateZ: function ( angle ) {\n\n\t\treturn this.rotateOnAxis( _zAxis, angle );\n\n\t},\n\n\ttranslateOnAxis: function ( axis, distance ) {\n\n\t\t// translate object by distance along axis in object space\n\t\t// axis is assumed to be normalized\n\n\t\t_v1$2.copy( axis ).applyQuaternion( this.quaternion );\n\n\t\tthis.position.add( _v1$2.multiplyScalar( distance ) );\n\n\t\treturn this;\n\n\t},\n\n\ttranslateX: function ( distance ) {\n\n\t\treturn this.translateOnAxis( _xAxis, distance );\n\n\t},\n\n\ttranslateY: function ( distance ) {\n\n\t\treturn this.translateOnAxis( _yAxis, distance );\n\n\t},\n\n\ttranslateZ: function ( distance ) {\n\n\t\treturn this.translateOnAxis( _zAxis, distance );\n\n\t},\n\n\tlocalToWorld: function ( vector ) {\n\n\t\treturn vector.applyMatrix4( this.matrixWorld );\n\n\t},\n\n\tworldToLocal: function ( vector ) {\n\n\t\treturn vector.applyMatrix4( _m1$1.copy( this.matrixWorld ).invert() );\n\n\t},\n\n\tlookAt: function ( x, y, z ) {\n\n\t\t// This method does not support objects having non-uniformly-scaled parent(s)\n\n\t\tif ( x.isVector3 ) {\n\n\t\t\t_target.copy( x );\n\n\t\t} else {\n\n\t\t\t_target.set( x, y, z );\n\n\t\t}\n\n\t\tconst parent = this.parent;\n\n\t\tthis.updateWorldMatrix( true, false );\n\n\t\t_position.setFromMatrixPosition( this.matrixWorld );\n\n\t\tif ( this.isCamera || this.isLight ) {\n\n\t\t\t_m1$1.lookAt( _position, _target, this.up );\n\n\t\t} else {\n\n\t\t\t_m1$1.lookAt( _target, _position, this.up );\n\n\t\t}\n\n\t\tthis.quaternion.setFromRotationMatrix( _m1$1 );\n\n\t\tif ( parent ) {\n\n\t\t\t_m1$1.extractRotation( parent.matrixWorld );\n\t\t\t_q1.setFromRotationMatrix( _m1$1 );\n\t\t\tthis.quaternion.premultiply( _q1.invert() );\n\n\t\t}\n\n\t},\n\n\tadd: function ( object ) {\n\n\t\tif ( arguments.length > 1 ) {\n\n\t\t\tfor ( let i = 0; i < arguments.length; i ++ ) {\n\n\t\t\t\tthis.add( arguments[ i ] );\n\n\t\t\t}\n\n\t\t\treturn this;\n\n\t\t}\n\n\t\tif ( object === this ) {\n\n\t\t\tconsole.error( 'THREE.Object3D.add: object can\\'t be added as a child of itself.', object );\n\t\t\treturn this;\n\n\t\t}\n\n\t\tif ( object && object.isObject3D ) {\n\n\t\t\tif ( object.parent !== null ) {\n\n\t\t\t\tobject.parent.remove( object );\n\n\t\t\t}\n\n\t\t\tobject.parent = this;\n\t\t\tthis.children.push( object );\n\n\t\t\tobject.dispatchEvent( _addedEvent );\n\n\t\t} else {\n\n\t\t\tconsole.error( 'THREE.Object3D.add: object not an instance of THREE.Object3D.', object );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tremove: function ( object ) {\n\n\t\tif ( arguments.length > 1 ) {\n\n\t\t\tfor ( let i = 0; i < arguments.length; i ++ ) {\n\n\t\t\t\tthis.remove( arguments[ i ] );\n\n\t\t\t}\n\n\t\t\treturn this;\n\n\t\t}\n\n\t\tconst index = this.children.indexOf( object );\n\n\t\tif ( index !== - 1 ) {\n\n\t\t\tobject.parent = null;\n\t\t\tthis.children.splice( index, 1 );\n\n\t\t\tobject.dispatchEvent( _removedEvent );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tclear: function () {\n\n\t\tfor ( let i = 0; i < this.children.length; i ++ ) {\n\n\t\t\tconst object = this.children[ i ];\n\n\t\t\tobject.parent = null;\n\n\t\t\tobject.dispatchEvent( _removedEvent );\n\n\t\t}\n\n\t\tthis.children.length = 0;\n\n\t\treturn this;\n\n\n\t},\n\n\tattach: function ( object ) {\n\n\t\t// adds object as a child of this, while maintaining the object's world transform\n\n\t\tthis.updateWorldMatrix( true, false );\n\n\t\t_m1$1.copy( this.matrixWorld ).invert();\n\n\t\tif ( object.parent !== null ) {\n\n\t\t\tobject.parent.updateWorldMatrix( true, false );\n\n\t\t\t_m1$1.multiply( object.parent.matrixWorld );\n\n\t\t}\n\n\t\tobject.applyMatrix4( _m1$1 );\n\n\t\tobject.updateWorldMatrix( false, false );\n\n\t\tthis.add( object );\n\n\t\treturn this;\n\n\t},\n\n\tgetObjectById: function ( id ) {\n\n\t\treturn this.getObjectByProperty( 'id', id );\n\n\t},\n\n\tgetObjectByName: function ( name ) {\n\n\t\treturn this.getObjectByProperty( 'name', name );\n\n\t},\n\n\tgetObjectByProperty: function ( name, value ) {\n\n\t\tif ( this[ name ] === value ) return this;\n\n\t\tfor ( let i = 0, l = this.children.length; i < l; i ++ ) {\n\n\t\t\tconst child = this.children[ i ];\n\t\t\tconst object = child.getObjectByProperty( name, value );\n\n\t\t\tif ( object !== undefined ) {\n\n\t\t\t\treturn object;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn undefined;\n\n\t},\n\n\tgetWorldPosition: function ( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Object3D: .getWorldPosition() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\tthis.updateWorldMatrix( true, false );\n\n\t\treturn target.setFromMatrixPosition( this.matrixWorld );\n\n\t},\n\n\tgetWorldQuaternion: function ( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Object3D: .getWorldQuaternion() target is now required' );\n\t\t\ttarget = new Quaternion();\n\n\t\t}\n\n\t\tthis.updateWorldMatrix( true, false );\n\n\t\tthis.matrixWorld.decompose( _position, target, _scale );\n\n\t\treturn target;\n\n\t},\n\n\tgetWorldScale: function ( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Object3D: .getWorldScale() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\tthis.updateWorldMatrix( true, false );\n\n\t\tthis.matrixWorld.decompose( _position, _quaternion$2, target );\n\n\t\treturn target;\n\n\t},\n\n\tgetWorldDirection: function ( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Object3D: .getWorldDirection() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\tthis.updateWorldMatrix( true, false );\n\n\t\tconst e = this.matrixWorld.elements;\n\n\t\treturn target.set( e[ 8 ], e[ 9 ], e[ 10 ] ).normalize();\n\n\t},\n\n\traycast: function () {},\n\n\ttraverse: function ( callback ) {\n\n\t\tcallback( this );\n\n\t\tconst children = this.children;\n\n\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\tchildren[ i ].traverse( callback );\n\n\t\t}\n\n\t},\n\n\ttraverseVisible: function ( callback ) {\n\n\t\tif ( this.visible === false ) return;\n\n\t\tcallback( this );\n\n\t\tconst children = this.children;\n\n\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\tchildren[ i ].traverseVisible( callback );\n\n\t\t}\n\n\t},\n\n\ttraverseAncestors: function ( callback ) {\n\n\t\tconst parent = this.parent;\n\n\t\tif ( parent !== null ) {\n\n\t\t\tcallback( parent );\n\n\t\t\tparent.traverseAncestors( callback );\n\n\t\t}\n\n\t},\n\n\tupdateMatrix: function () {\n\n\t\tthis.matrix.compose( this.position, this.quaternion, this.scale );\n\n\t\tthis.matrixWorldNeedsUpdate = true;\n\n\t},\n\n\tupdateMatrixWorld: function ( force ) {\n\n\t\tif ( this.matrixAutoUpdate ) this.updateMatrix();\n\n\t\tif ( this.matrixWorldNeedsUpdate || force ) {\n\n\t\t\tif ( this.parent === null ) {\n\n\t\t\t\tthis.matrixWorld.copy( this.matrix );\n\n\t\t\t} else {\n\n\t\t\t\tthis.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );\n\n\t\t\t}\n\n\t\t\tthis.matrixWorldNeedsUpdate = false;\n\n\t\t\tforce = true;\n\n\t\t}\n\n\t\t// update children\n\n\t\tconst children = this.children;\n\n\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\tchildren[ i ].updateMatrixWorld( force );\n\n\t\t}\n\n\t},\n\n\tupdateWorldMatrix: function ( updateParents, updateChildren ) {\n\n\t\tconst parent = this.parent;\n\n\t\tif ( updateParents === true && parent !== null ) {\n\n\t\t\tparent.updateWorldMatrix( true, false );\n\n\t\t}\n\n\t\tif ( this.matrixAutoUpdate ) this.updateMatrix();\n\n\t\tif ( this.parent === null ) {\n\n\t\t\tthis.matrixWorld.copy( this.matrix );\n\n\t\t} else {\n\n\t\t\tthis.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );\n\n\t\t}\n\n\t\t// update children\n\n\t\tif ( updateChildren === true ) {\n\n\t\t\tconst children = this.children;\n\n\t\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\t\tchildren[ i ].updateWorldMatrix( false, true );\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\ttoJSON: function ( meta ) {\n\n\t\t// meta is a string when called from JSON.stringify\n\t\tconst isRootObject = ( meta === undefined || typeof meta === 'string' );\n\n\t\tconst output = {};\n\n\t\t// meta is a hash used to collect geometries, materials.\n\t\t// not providing it implies that this is the root object\n\t\t// being serialized.\n\t\tif ( isRootObject ) {\n\n\t\t\t// initialize meta obj\n\t\t\tmeta = {\n\t\t\t\tgeometries: {},\n\t\t\t\tmaterials: {},\n\t\t\t\ttextures: {},\n\t\t\t\timages: {},\n\t\t\t\tshapes: {},\n\t\t\t\tskeletons: {},\n\t\t\t\tanimations: {}\n\t\t\t};\n\n\t\t\toutput.metadata = {\n\t\t\t\tversion: 4.5,\n\t\t\t\ttype: 'Object',\n\t\t\t\tgenerator: 'Object3D.toJSON'\n\t\t\t};\n\n\t\t}\n\n\t\t// standard Object3D serialization\n\n\t\tconst object = {};\n\n\t\tobject.uuid = this.uuid;\n\t\tobject.type = this.type;\n\n\t\tif ( this.name !== '' ) object.name = this.name;\n\t\tif ( this.castShadow === true ) object.castShadow = true;\n\t\tif ( this.receiveShadow === true ) object.receiveShadow = true;\n\t\tif ( this.visible === false ) object.visible = false;\n\t\tif ( this.frustumCulled === false ) object.frustumCulled = false;\n\t\tif ( this.renderOrder !== 0 ) object.renderOrder = this.renderOrder;\n\t\tif ( JSON.stringify( this.userData ) !== '{}' ) object.userData = this.userData;\n\n\t\tobject.layers = this.layers.mask;\n\t\tobject.matrix = this.matrix.toArray();\n\n\t\tif ( this.matrixAutoUpdate === false ) object.matrixAutoUpdate = false;\n\n\t\t// object specific properties\n\n\t\tif ( this.isInstancedMesh ) {\n\n\t\t\tobject.type = 'InstancedMesh';\n\t\t\tobject.count = this.count;\n\t\t\tobject.instanceMatrix = this.instanceMatrix.toJSON();\n\n\t\t}\n\n\t\t//\n\n\t\tfunction serialize( library, element ) {\n\n\t\t\tif ( library[ element.uuid ] === undefined ) {\n\n\t\t\t\tlibrary[ element.uuid ] = element.toJSON( meta );\n\n\t\t\t}\n\n\t\t\treturn element.uuid;\n\n\t\t}\n\n\t\tif ( this.isMesh || this.isLine || this.isPoints ) {\n\n\t\t\tobject.geometry = serialize( meta.geometries, this.geometry );\n\n\t\t\tconst parameters = this.geometry.parameters;\n\n\t\t\tif ( parameters !== undefined && parameters.shapes !== undefined ) {\n\n\t\t\t\tconst shapes = parameters.shapes;\n\n\t\t\t\tif ( Array.isArray( shapes ) ) {\n\n\t\t\t\t\tfor ( let i = 0, l = shapes.length; i < l; i ++ ) {\n\n\t\t\t\t\t\tconst shape = shapes[ i ];\n\n\t\t\t\t\t\tserialize( meta.shapes, shape );\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\tserialize( meta.shapes, shapes );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( this.isSkinnedMesh ) {\n\n\t\t\tobject.bindMode = this.bindMode;\n\t\t\tobject.bindMatrix = this.bindMatrix.toArray();\n\n\t\t\tif ( this.skeleton !== undefined ) {\n\n\t\t\t\tserialize( meta.skeletons, this.skeleton );\n\n\t\t\t\tobject.skeleton = this.skeleton.uuid;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( this.material !== undefined ) {\n\n\t\t\tif ( Array.isArray( this.material ) ) {\n\n\t\t\t\tconst uuids = [];\n\n\t\t\t\tfor ( let i = 0, l = this.material.length; i < l; i ++ ) {\n\n\t\t\t\t\tuuids.push( serialize( meta.materials, this.material[ i ] ) );\n\n\t\t\t\t}\n\n\t\t\t\tobject.material = uuids;\n\n\t\t\t} else {\n\n\t\t\t\tobject.material = serialize( meta.materials, this.material );\n\n\t\t\t}\n\n\t\t}\n\n\t\t//\n\n\t\tif ( this.children.length > 0 ) {\n\n\t\t\tobject.children = [];\n\n\t\t\tfor ( let i = 0; i < this.children.length; i ++ ) {\n\n\t\t\t\tobject.children.push( this.children[ i ].toJSON( meta ).object );\n\n\t\t\t}\n\n\t\t}\n\n\t\t//\n\n\t\tif ( this.animations.length > 0 ) {\n\n\t\t\tobject.animations = [];\n\n\t\t\tfor ( let i = 0; i < this.animations.length; i ++ ) {\n\n\t\t\t\tconst animation = this.animations[ i ];\n\n\t\t\t\tobject.animations.push( serialize( meta.animations, animation ) );\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( isRootObject ) {\n\n\t\t\tconst geometries = extractFromCache( meta.geometries );\n\t\t\tconst materials = extractFromCache( meta.materials );\n\t\t\tconst textures = extractFromCache( meta.textures );\n\t\t\tconst images = extractFromCache( meta.images );\n\t\t\tconst shapes = extractFromCache( meta.shapes );\n\t\t\tconst skeletons = extractFromCache( meta.skeletons );\n\t\t\tconst animations = extractFromCache( meta.animations );\n\n\t\t\tif ( geometries.length > 0 ) output.geometries = geometries;\n\t\t\tif ( materials.length > 0 ) output.materials = materials;\n\t\t\tif ( textures.length > 0 ) output.textures = textures;\n\t\t\tif ( images.length > 0 ) output.images = images;\n\t\t\tif ( shapes.length > 0 ) output.shapes = shapes;\n\t\t\tif ( skeletons.length > 0 ) output.skeletons = skeletons;\n\t\t\tif ( animations.length > 0 ) output.animations = animations;\n\n\t\t}\n\n\t\toutput.object = object;\n\n\t\treturn output;\n\n\t\t// extract data from the cache hash\n\t\t// remove metadata on each item\n\t\t// and return as array\n\t\tfunction extractFromCache( cache ) {\n\n\t\t\tconst values = [];\n\t\t\tfor ( const key in cache ) {\n\n\t\t\t\tconst data = cache[ key ];\n\t\t\t\tdelete data.metadata;\n\t\t\t\tvalues.push( data );\n\n\t\t\t}\n\n\t\t\treturn values;\n\n\t\t}\n\n\t},\n\n\tclone: function ( recursive ) {\n\n\t\treturn new this.constructor().copy( this, recursive );\n\n\t},\n\n\tcopy: function ( source, recursive = true ) {\n\n\t\tthis.name = source.name;\n\n\t\tthis.up.copy( source.up );\n\n\t\tthis.position.copy( source.position );\n\t\tthis.rotation.order = source.rotation.order;\n\t\tthis.quaternion.copy( source.quaternion );\n\t\tthis.scale.copy( source.scale );\n\n\t\tthis.matrix.copy( source.matrix );\n\t\tthis.matrixWorld.copy( source.matrixWorld );\n\n\t\tthis.matrixAutoUpdate = source.matrixAutoUpdate;\n\t\tthis.matrixWorldNeedsUpdate = source.matrixWorldNeedsUpdate;\n\n\t\tthis.layers.mask = source.layers.mask;\n\t\tthis.visible = source.visible;\n\n\t\tthis.castShadow = source.castShadow;\n\t\tthis.receiveShadow = source.receiveShadow;\n\n\t\tthis.frustumCulled = source.frustumCulled;\n\t\tthis.renderOrder = source.renderOrder;\n\n\t\tthis.userData = JSON.parse( JSON.stringify( source.userData ) );\n\n\t\tif ( recursive === true ) {\n\n\t\t\tfor ( let i = 0; i < source.children.length; i ++ ) {\n\n\t\t\t\tconst child = source.children[ i ];\n\t\t\t\tthis.add( child.clone() );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n} );\n\nconst _vector1 = /*@__PURE__*/ new Vector3();\nconst _vector2 = /*@__PURE__*/ new Vector3();\nconst _normalMatrix = /*@__PURE__*/ new Matrix3();\n\nclass Plane {\n\n\tconstructor( normal, constant ) {\n\n\t\tObject.defineProperty( this, 'isPlane', { value: true } );\n\n\t\t// normal is assumed to be normalized\n\n\t\tthis.normal = ( normal !== undefined ) ? normal : new Vector3( 1, 0, 0 );\n\t\tthis.constant = ( constant !== undefined ) ? constant : 0;\n\n\t}\n\n\tset( normal, constant ) {\n\n\t\tthis.normal.copy( normal );\n\t\tthis.constant = constant;\n\n\t\treturn this;\n\n\t}\n\n\tsetComponents( x, y, z, w ) {\n\n\t\tthis.normal.set( x, y, z );\n\t\tthis.constant = w;\n\n\t\treturn this;\n\n\t}\n\n\tsetFromNormalAndCoplanarPoint( normal, point ) {\n\n\t\tthis.normal.copy( normal );\n\t\tthis.constant = - point.dot( this.normal );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromCoplanarPoints( a, b, c ) {\n\n\t\tconst normal = _vector1.subVectors( c, b ).cross( _vector2.subVectors( a, b ) ).normalize();\n\n\t\t// Q: should an error be thrown if normal is zero (e.g. degenerate plane)?\n\n\t\tthis.setFromNormalAndCoplanarPoint( normal, a );\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( plane ) {\n\n\t\tthis.normal.copy( plane.normal );\n\t\tthis.constant = plane.constant;\n\n\t\treturn this;\n\n\t}\n\n\tnormalize() {\n\n\t\t// Note: will lead to a divide by zero if the plane is invalid.\n\n\t\tconst inverseNormalLength = 1.0 / this.normal.length();\n\t\tthis.normal.multiplyScalar( inverseNormalLength );\n\t\tthis.constant *= inverseNormalLength;\n\n\t\treturn this;\n\n\t}\n\n\tnegate() {\n\n\t\tthis.constant *= - 1;\n\t\tthis.normal.negate();\n\n\t\treturn this;\n\n\t}\n\n\tdistanceToPoint( point ) {\n\n\t\treturn this.normal.dot( point ) + this.constant;\n\n\t}\n\n\tdistanceToSphere( sphere ) {\n\n\t\treturn this.distanceToPoint( sphere.center ) - sphere.radius;\n\n\t}\n\n\tprojectPoint( point, target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Plane: .projectPoint() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\treturn target.copy( this.normal ).multiplyScalar( - this.distanceToPoint( point ) ).add( point );\n\n\t}\n\n\tintersectLine( line, target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Plane: .intersectLine() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\tconst direction = line.delta( _vector1 );\n\n\t\tconst denominator = this.normal.dot( direction );\n\n\t\tif ( denominator === 0 ) {\n\n\t\t\t// line is coplanar, return origin\n\t\t\tif ( this.distanceToPoint( line.start ) === 0 ) {\n\n\t\t\t\treturn target.copy( line.start );\n\n\t\t\t}\n\n\t\t\t// Unsure if this is the correct method to handle this case.\n\t\t\treturn undefined;\n\n\t\t}\n\n\t\tconst t = - ( line.start.dot( this.normal ) + this.constant ) / denominator;\n\n\t\tif ( t < 0 || t > 1 ) {\n\n\t\t\treturn undefined;\n\n\t\t}\n\n\t\treturn target.copy( direction ).multiplyScalar( t ).add( line.start );\n\n\t}\n\n\tintersectsLine( line ) {\n\n\t\t// Note: this tests if a line intersects the plane, not whether it (or its end-points) are coplanar with it.\n\n\t\tconst startSign = this.distanceToPoint( line.start );\n\t\tconst endSign = this.distanceToPoint( line.end );\n\n\t\treturn ( startSign < 0 && endSign > 0 ) || ( endSign < 0 && startSign > 0 );\n\n\t}\n\n\tintersectsBox( box ) {\n\n\t\treturn box.intersectsPlane( this );\n\n\t}\n\n\tintersectsSphere( sphere ) {\n\n\t\treturn sphere.intersectsPlane( this );\n\n\t}\n\n\tcoplanarPoint( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Plane: .coplanarPoint() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\treturn target.copy( this.normal ).multiplyScalar( - this.constant );\n\n\t}\n\n\tapplyMatrix4( matrix, optionalNormalMatrix ) {\n\n\t\tconst normalMatrix = optionalNormalMatrix || _normalMatrix.getNormalMatrix( matrix );\n\n\t\tconst referencePoint = this.coplanarPoint( _vector1 ).applyMatrix4( matrix );\n\n\t\tconst normal = this.normal.applyMatrix3( normalMatrix ).normalize();\n\n\t\tthis.constant = - referencePoint.dot( normal );\n\n\t\treturn this;\n\n\t}\n\n\ttranslate( offset ) {\n\n\t\tthis.constant -= offset.dot( this.normal );\n\n\t\treturn this;\n\n\t}\n\n\tequals( plane ) {\n\n\t\treturn plane.normal.equals( this.normal ) && ( plane.constant === this.constant );\n\n\t}\n\n}\n\nconst _v0$1 = /*@__PURE__*/ new Vector3();\nconst _v1$3 = /*@__PURE__*/ new Vector3();\nconst _v2$1 = /*@__PURE__*/ new Vector3();\nconst _v3 = /*@__PURE__*/ new Vector3();\n\nconst _vab = /*@__PURE__*/ new Vector3();\nconst _vac = /*@__PURE__*/ new Vector3();\nconst _vbc = /*@__PURE__*/ new Vector3();\nconst _vap = /*@__PURE__*/ new Vector3();\nconst _vbp = /*@__PURE__*/ new Vector3();\nconst _vcp = /*@__PURE__*/ new Vector3();\n\nclass Triangle {\n\n\tconstructor( a, b, c ) {\n\n\t\tthis.a = ( a !== undefined ) ? a : new Vector3();\n\t\tthis.b = ( b !== undefined ) ? b : new Vector3();\n\t\tthis.c = ( c !== undefined ) ? c : new Vector3();\n\n\t}\n\n\tstatic getNormal( a, b, c, target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Triangle: .getNormal() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\ttarget.subVectors( c, b );\n\t\t_v0$1.subVectors( a, b );\n\t\ttarget.cross( _v0$1 );\n\n\t\tconst targetLengthSq = target.lengthSq();\n\t\tif ( targetLengthSq > 0 ) {\n\n\t\t\treturn target.multiplyScalar( 1 / Math.sqrt( targetLengthSq ) );\n\n\t\t}\n\n\t\treturn target.set( 0, 0, 0 );\n\n\t}\n\n\t// static/instance method to calculate barycentric coordinates\n\t// based on: http://www.blackpawn.com/texts/pointinpoly/default.html\n\tstatic getBarycoord( point, a, b, c, target ) {\n\n\t\t_v0$1.subVectors( c, a );\n\t\t_v1$3.subVectors( b, a );\n\t\t_v2$1.subVectors( point, a );\n\n\t\tconst dot00 = _v0$1.dot( _v0$1 );\n\t\tconst dot01 = _v0$1.dot( _v1$3 );\n\t\tconst dot02 = _v0$1.dot( _v2$1 );\n\t\tconst dot11 = _v1$3.dot( _v1$3 );\n\t\tconst dot12 = _v1$3.dot( _v2$1 );\n\n\t\tconst denom = ( dot00 * dot11 - dot01 * dot01 );\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Triangle: .getBarycoord() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\t// collinear or singular triangle\n\t\tif ( denom === 0 ) {\n\n\t\t\t// arbitrary location outside of triangle?\n\t\t\t// not sure if this is the best idea, maybe should be returning undefined\n\t\t\treturn target.set( - 2, - 1, - 1 );\n\n\t\t}\n\n\t\tconst invDenom = 1 / denom;\n\t\tconst u = ( dot11 * dot02 - dot01 * dot12 ) * invDenom;\n\t\tconst v = ( dot00 * dot12 - dot01 * dot02 ) * invDenom;\n\n\t\t// barycentric coordinates must always sum to 1\n\t\treturn target.set( 1 - u - v, v, u );\n\n\t}\n\n\tstatic containsPoint( point, a, b, c ) {\n\n\t\tthis.getBarycoord( point, a, b, c, _v3 );\n\n\t\treturn ( _v3.x >= 0 ) && ( _v3.y >= 0 ) && ( ( _v3.x + _v3.y ) <= 1 );\n\n\t}\n\n\tstatic getUV( point, p1, p2, p3, uv1, uv2, uv3, target ) {\n\n\t\tthis.getBarycoord( point, p1, p2, p3, _v3 );\n\n\t\ttarget.set( 0, 0 );\n\t\ttarget.addScaledVector( uv1, _v3.x );\n\t\ttarget.addScaledVector( uv2, _v3.y );\n\t\ttarget.addScaledVector( uv3, _v3.z );\n\n\t\treturn target;\n\n\t}\n\n\tstatic isFrontFacing( a, b, c, direction ) {\n\n\t\t_v0$1.subVectors( c, b );\n\t\t_v1$3.subVectors( a, b );\n\n\t\t// strictly front facing\n\t\treturn ( _v0$1.cross( _v1$3 ).dot( direction ) < 0 ) ? true : false;\n\n\t}\n\n\tset( a, b, c ) {\n\n\t\tthis.a.copy( a );\n\t\tthis.b.copy( b );\n\t\tthis.c.copy( c );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromPointsAndIndices( points, i0, i1, i2 ) {\n\n\t\tthis.a.copy( points[ i0 ] );\n\t\tthis.b.copy( points[ i1 ] );\n\t\tthis.c.copy( points[ i2 ] );\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( triangle ) {\n\n\t\tthis.a.copy( triangle.a );\n\t\tthis.b.copy( triangle.b );\n\t\tthis.c.copy( triangle.c );\n\n\t\treturn this;\n\n\t}\n\n\tgetArea() {\n\n\t\t_v0$1.subVectors( this.c, this.b );\n\t\t_v1$3.subVectors( this.a, this.b );\n\n\t\treturn _v0$1.cross( _v1$3 ).length() * 0.5;\n\n\t}\n\n\tgetMidpoint( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Triangle: .getMidpoint() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\treturn target.addVectors( this.a, this.b ).add( this.c ).multiplyScalar( 1 / 3 );\n\n\t}\n\n\tgetNormal( target ) {\n\n\t\treturn Triangle.getNormal( this.a, this.b, this.c, target );\n\n\t}\n\n\tgetPlane( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Triangle: .getPlane() target is now required' );\n\t\t\ttarget = new Plane();\n\n\t\t}\n\n\t\treturn target.setFromCoplanarPoints( this.a, this.b, this.c );\n\n\t}\n\n\tgetBarycoord( point, target ) {\n\n\t\treturn Triangle.getBarycoord( point, this.a, this.b, this.c, target );\n\n\t}\n\n\tgetUV( point, uv1, uv2, uv3, target ) {\n\n\t\treturn Triangle.getUV( point, this.a, this.b, this.c, uv1, uv2, uv3, target );\n\n\t}\n\n\tcontainsPoint( point ) {\n\n\t\treturn Triangle.containsPoint( point, this.a, this.b, this.c );\n\n\t}\n\n\tisFrontFacing( direction ) {\n\n\t\treturn Triangle.isFrontFacing( this.a, this.b, this.c, direction );\n\n\t}\n\n\tintersectsBox( box ) {\n\n\t\treturn box.intersectsTriangle( this );\n\n\t}\n\n\tclosestPointToPoint( p, target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Triangle: .closestPointToPoint() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\tconst a = this.a, b = this.b, c = this.c;\n\t\tlet v, w;\n\n\t\t// algorithm thanks to Real-Time Collision Detection by Christer Ericson,\n\t\t// published by Morgan Kaufmann Publishers, (c) 2005 Elsevier Inc.,\n\t\t// under the accompanying license; see chapter 5.1.5 for detailed explanation.\n\t\t// basically, we're distinguishing which of the voronoi regions of the triangle\n\t\t// the point lies in with the minimum amount of redundant computation.\n\n\t\t_vab.subVectors( b, a );\n\t\t_vac.subVectors( c, a );\n\t\t_vap.subVectors( p, a );\n\t\tconst d1 = _vab.dot( _vap );\n\t\tconst d2 = _vac.dot( _vap );\n\t\tif ( d1 <= 0 && d2 <= 0 ) {\n\n\t\t\t// vertex region of A; barycentric coords (1, 0, 0)\n\t\t\treturn target.copy( a );\n\n\t\t}\n\n\t\t_vbp.subVectors( p, b );\n\t\tconst d3 = _vab.dot( _vbp );\n\t\tconst d4 = _vac.dot( _vbp );\n\t\tif ( d3 >= 0 && d4 <= d3 ) {\n\n\t\t\t// vertex region of B; barycentric coords (0, 1, 0)\n\t\t\treturn target.copy( b );\n\n\t\t}\n\n\t\tconst vc = d1 * d4 - d3 * d2;\n\t\tif ( vc <= 0 && d1 >= 0 && d3 <= 0 ) {\n\n\t\t\tv = d1 / ( d1 - d3 );\n\t\t\t// edge region of AB; barycentric coords (1-v, v, 0)\n\t\t\treturn target.copy( a ).addScaledVector( _vab, v );\n\n\t\t}\n\n\t\t_vcp.subVectors( p, c );\n\t\tconst d5 = _vab.dot( _vcp );\n\t\tconst d6 = _vac.dot( _vcp );\n\t\tif ( d6 >= 0 && d5 <= d6 ) {\n\n\t\t\t// vertex region of C; barycentric coords (0, 0, 1)\n\t\t\treturn target.copy( c );\n\n\t\t}\n\n\t\tconst vb = d5 * d2 - d1 * d6;\n\t\tif ( vb <= 0 && d2 >= 0 && d6 <= 0 ) {\n\n\t\t\tw = d2 / ( d2 - d6 );\n\t\t\t// edge region of AC; barycentric coords (1-w, 0, w)\n\t\t\treturn target.copy( a ).addScaledVector( _vac, w );\n\n\t\t}\n\n\t\tconst va = d3 * d6 - d5 * d4;\n\t\tif ( va <= 0 && ( d4 - d3 ) >= 0 && ( d5 - d6 ) >= 0 ) {\n\n\t\t\t_vbc.subVectors( c, b );\n\t\t\tw = ( d4 - d3 ) / ( ( d4 - d3 ) + ( d5 - d6 ) );\n\t\t\t// edge region of BC; barycentric coords (0, 1-w, w)\n\t\t\treturn target.copy( b ).addScaledVector( _vbc, w ); // edge region of BC\n\n\t\t}\n\n\t\t// face region\n\t\tconst denom = 1 / ( va + vb + vc );\n\t\t// u = va * denom\n\t\tv = vb * denom;\n\t\tw = vc * denom;\n\n\t\treturn target.copy( a ).addScaledVector( _vab, v ).addScaledVector( _vac, w );\n\n\t}\n\n\tequals( triangle ) {\n\n\t\treturn triangle.a.equals( this.a ) && triangle.b.equals( this.b ) && triangle.c.equals( this.c );\n\n\t}\n\n}\n\nconst _colorKeywords = { 'aliceblue': 0xF0F8FF, 'antiquewhite': 0xFAEBD7, 'aqua': 0x00FFFF, 'aquamarine': 0x7FFFD4, 'azure': 0xF0FFFF,\n\t'beige': 0xF5F5DC, 'bisque': 0xFFE4C4, 'black': 0x000000, 'blanchedalmond': 0xFFEBCD, 'blue': 0x0000FF, 'blueviolet': 0x8A2BE2,\n\t'brown': 0xA52A2A, 'burlywood': 0xDEB887, 'cadetblue': 0x5F9EA0, 'chartreuse': 0x7FFF00, 'chocolate': 0xD2691E, 'coral': 0xFF7F50,\n\t'cornflowerblue': 0x6495ED, 'cornsilk': 0xFFF8DC, 'crimson': 0xDC143C, 'cyan': 0x00FFFF, 'darkblue': 0x00008B, 'darkcyan': 0x008B8B,\n\t'darkgoldenrod': 0xB8860B, 'darkgray': 0xA9A9A9, 'darkgreen': 0x006400, 'darkgrey': 0xA9A9A9, 'darkkhaki': 0xBDB76B, 'darkmagenta': 0x8B008B,\n\t'darkolivegreen': 0x556B2F, 'darkorange': 0xFF8C00, 'darkorchid': 0x9932CC, 'darkred': 0x8B0000, 'darksalmon': 0xE9967A, 'darkseagreen': 0x8FBC8F,\n\t'darkslateblue': 0x483D8B, 'darkslategray': 0x2F4F4F, 'darkslategrey': 0x2F4F4F, 'darkturquoise': 0x00CED1, 'darkviolet': 0x9400D3,\n\t'deeppink': 0xFF1493, 'deepskyblue': 0x00BFFF, 'dimgray': 0x696969, 'dimgrey': 0x696969, 'dodgerblue': 0x1E90FF, 'firebrick': 0xB22222,\n\t'floralwhite': 0xFFFAF0, 'forestgreen': 0x228B22, 'fuchsia': 0xFF00FF, 'gainsboro': 0xDCDCDC, 'ghostwhite': 0xF8F8FF, 'gold': 0xFFD700,\n\t'goldenrod': 0xDAA520, 'gray': 0x808080, 'green': 0x008000, 'greenyellow': 0xADFF2F, 'grey': 0x808080, 'honeydew': 0xF0FFF0, 'hotpink': 0xFF69B4,\n\t'indianred': 0xCD5C5C, 'indigo': 0x4B0082, 'ivory': 0xFFFFF0, 'khaki': 0xF0E68C, 'lavender': 0xE6E6FA, 'lavenderblush': 0xFFF0F5, 'lawngreen': 0x7CFC00,\n\t'lemonchiffon': 0xFFFACD, 'lightblue': 0xADD8E6, 'lightcoral': 0xF08080, 'lightcyan': 0xE0FFFF, 'lightgoldenrodyellow': 0xFAFAD2, 'lightgray': 0xD3D3D3,\n\t'lightgreen': 0x90EE90, 'lightgrey': 0xD3D3D3, 'lightpink': 0xFFB6C1, 'lightsalmon': 0xFFA07A, 'lightseagreen': 0x20B2AA, 'lightskyblue': 0x87CEFA,\n\t'lightslategray': 0x778899, 'lightslategrey': 0x778899, 'lightsteelblue': 0xB0C4DE, 'lightyellow': 0xFFFFE0, 'lime': 0x00FF00, 'limegreen': 0x32CD32,\n\t'linen': 0xFAF0E6, 'magenta': 0xFF00FF, 'maroon': 0x800000, 'mediumaquamarine': 0x66CDAA, 'mediumblue': 0x0000CD, 'mediumorchid': 0xBA55D3,\n\t'mediumpurple': 0x9370DB, 'mediumseagreen': 0x3CB371, 'mediumslateblue': 0x7B68EE, 'mediumspringgreen': 0x00FA9A, 'mediumturquoise': 0x48D1CC,\n\t'mediumvioletred': 0xC71585, 'midnightblue': 0x191970, 'mintcream': 0xF5FFFA, 'mistyrose': 0xFFE4E1, 'moccasin': 0xFFE4B5, 'navajowhite': 0xFFDEAD,\n\t'navy': 0x000080, 'oldlace': 0xFDF5E6, 'olive': 0x808000, 'olivedrab': 0x6B8E23, 'orange': 0xFFA500, 'orangered': 0xFF4500, 'orchid': 0xDA70D6,\n\t'palegoldenrod': 0xEEE8AA, 'palegreen': 0x98FB98, 'paleturquoise': 0xAFEEEE, 'palevioletred': 0xDB7093, 'papayawhip': 0xFFEFD5, 'peachpuff': 0xFFDAB9,\n\t'peru': 0xCD853F, 'pink': 0xFFC0CB, 'plum': 0xDDA0DD, 'powderblue': 0xB0E0E6, 'purple': 0x800080, 'rebeccapurple': 0x663399, 'red': 0xFF0000, 'rosybrown': 0xBC8F8F,\n\t'royalblue': 0x4169E1, 'saddlebrown': 0x8B4513, 'salmon': 0xFA8072, 'sandybrown': 0xF4A460, 'seagreen': 0x2E8B57, 'seashell': 0xFFF5EE,\n\t'sienna': 0xA0522D, 'silver': 0xC0C0C0, 'skyblue': 0x87CEEB, 'slateblue': 0x6A5ACD, 'slategray': 0x708090, 'slategrey': 0x708090, 'snow': 0xFFFAFA,\n\t'springgreen': 0x00FF7F, 'steelblue': 0x4682B4, 'tan': 0xD2B48C, 'teal': 0x008080, 'thistle': 0xD8BFD8, 'tomato': 0xFF6347, 'turquoise': 0x40E0D0,\n\t'violet': 0xEE82EE, 'wheat': 0xF5DEB3, 'white': 0xFFFFFF, 'whitesmoke': 0xF5F5F5, 'yellow': 0xFFFF00, 'yellowgreen': 0x9ACD32 };\n\nconst _hslA = { h: 0, s: 0, l: 0 };\nconst _hslB = { h: 0, s: 0, l: 0 };\n\nfunction hue2rgb( p, q, t ) {\n\n\tif ( t < 0 ) t += 1;\n\tif ( t > 1 ) t -= 1;\n\tif ( t < 1 / 6 ) return p + ( q - p ) * 6 * t;\n\tif ( t < 1 / 2 ) return q;\n\tif ( t < 2 / 3 ) return p + ( q - p ) * 6 * ( 2 / 3 - t );\n\treturn p;\n\n}\n\nfunction SRGBToLinear( c ) {\n\n\treturn ( c < 0.04045 ) ? c * 0.0773993808 : Math.pow( c * 0.9478672986 + 0.0521327014, 2.4 );\n\n}\n\nfunction LinearToSRGB( c ) {\n\n\treturn ( c < 0.0031308 ) ? c * 12.92 : 1.055 * ( Math.pow( c, 0.41666 ) ) - 0.055;\n\n}\n\nclass Color {\n\n\tconstructor( r, g, b ) {\n\n\t\tObject.defineProperty( this, 'isColor', { value: true } );\n\n\t\tif ( g === undefined && b === undefined ) {\n\n\t\t\t// r is THREE.Color, hex or string\n\t\t\treturn this.set( r );\n\n\t\t}\n\n\t\treturn this.setRGB( r, g, b );\n\n\t}\n\n\tset( value ) {\n\n\t\tif ( value && value.isColor ) {\n\n\t\t\tthis.copy( value );\n\n\t\t} else if ( typeof value === 'number' ) {\n\n\t\t\tthis.setHex( value );\n\n\t\t} else if ( typeof value === 'string' ) {\n\n\t\t\tthis.setStyle( value );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetScalar( scalar ) {\n\n\t\tthis.r = scalar;\n\t\tthis.g = scalar;\n\t\tthis.b = scalar;\n\n\t\treturn this;\n\n\t}\n\n\tsetHex( hex ) {\n\n\t\thex = Math.floor( hex );\n\n\t\tthis.r = ( hex >> 16 & 255 ) / 255;\n\t\tthis.g = ( hex >> 8 & 255 ) / 255;\n\t\tthis.b = ( hex & 255 ) / 255;\n\n\t\treturn this;\n\n\t}\n\n\tsetRGB( r, g, b ) {\n\n\t\tthis.r = r;\n\t\tthis.g = g;\n\t\tthis.b = b;\n\n\t\treturn this;\n\n\t}\n\n\tsetHSL( h, s, l ) {\n\n\t\t// h,s,l ranges are in 0.0 - 1.0\n\t\th = MathUtils.euclideanModulo( h, 1 );\n\t\ts = MathUtils.clamp( s, 0, 1 );\n\t\tl = MathUtils.clamp( l, 0, 1 );\n\n\t\tif ( s === 0 ) {\n\n\t\t\tthis.r = this.g = this.b = l;\n\n\t\t} else {\n\n\t\t\tconst p = l <= 0.5 ? l * ( 1 + s ) : l + s - ( l * s );\n\t\t\tconst q = ( 2 * l ) - p;\n\n\t\t\tthis.r = hue2rgb( q, p, h + 1 / 3 );\n\t\t\tthis.g = hue2rgb( q, p, h );\n\t\t\tthis.b = hue2rgb( q, p, h - 1 / 3 );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetStyle( style ) {\n\n\t\tfunction handleAlpha( string ) {\n\n\t\t\tif ( string === undefined ) return;\n\n\t\t\tif ( parseFloat( string ) < 1 ) {\n\n\t\t\t\tconsole.warn( 'THREE.Color: Alpha component of ' + style + ' will be ignored.' );\n\n\t\t\t}\n\n\t\t}\n\n\n\t\tlet m;\n\n\t\tif ( m = /^((?:rgb|hsl)a?)\\(\\s*([^\\)]*)\\)/.exec( style ) ) {\n\n\t\t\t// rgb / hsl\n\n\t\t\tlet color;\n\t\t\tconst name = m[ 1 ];\n\t\t\tconst components = m[ 2 ];\n\n\t\t\tswitch ( name ) {\n\n\t\t\t\tcase 'rgb':\n\t\t\t\tcase 'rgba':\n\n\t\t\t\t\tif ( color = /^(\\d+)\\s*,\\s*(\\d+)\\s*,\\s*(\\d+)\\s*(?:,\\s*(\\d*\\.?\\d+)\\s*)?$/.exec( components ) ) {\n\n\t\t\t\t\t\t// rgb(255,0,0) rgba(255,0,0,0.5)\n\t\t\t\t\t\tthis.r = Math.min( 255, parseInt( color[ 1 ], 10 ) ) / 255;\n\t\t\t\t\t\tthis.g = Math.min( 255, parseInt( color[ 2 ], 10 ) ) / 255;\n\t\t\t\t\t\tthis.b = Math.min( 255, parseInt( color[ 3 ], 10 ) ) / 255;\n\n\t\t\t\t\t\thandleAlpha( color[ 4 ] );\n\n\t\t\t\t\t\treturn this;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( color = /^(\\d+)\\%\\s*,\\s*(\\d+)\\%\\s*,\\s*(\\d+)\\%\\s*(?:,\\s*(\\d*\\.?\\d+)\\s*)?$/.exec( components ) ) {\n\n\t\t\t\t\t\t// rgb(100%,0%,0%) rgba(100%,0%,0%,0.5)\n\t\t\t\t\t\tthis.r = Math.min( 100, parseInt( color[ 1 ], 10 ) ) / 100;\n\t\t\t\t\t\tthis.g = Math.min( 100, parseInt( color[ 2 ], 10 ) ) / 100;\n\t\t\t\t\t\tthis.b = Math.min( 100, parseInt( color[ 3 ], 10 ) ) / 100;\n\n\t\t\t\t\t\thandleAlpha( color[ 4 ] );\n\n\t\t\t\t\t\treturn this;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'hsl':\n\t\t\t\tcase 'hsla':\n\n\t\t\t\t\tif ( color = /^(\\d*\\.?\\d+)\\s*,\\s*(\\d+)\\%\\s*,\\s*(\\d+)\\%\\s*(?:,\\s*(\\d*\\.?\\d+)\\s*)?$/.exec( components ) ) {\n\n\t\t\t\t\t\t// hsl(120,50%,50%) hsla(120,50%,50%,0.5)\n\t\t\t\t\t\tconst h = parseFloat( color[ 1 ] ) / 360;\n\t\t\t\t\t\tconst s = parseInt( color[ 2 ], 10 ) / 100;\n\t\t\t\t\t\tconst l = parseInt( color[ 3 ], 10 ) / 100;\n\n\t\t\t\t\t\thandleAlpha( color[ 4 ] );\n\n\t\t\t\t\t\treturn this.setHSL( h, s, l );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t} else if ( m = /^\\#([A-Fa-f\\d]+)$/.exec( style ) ) {\n\n\t\t\t// hex color\n\n\t\t\tconst hex = m[ 1 ];\n\t\t\tconst size = hex.length;\n\n\t\t\tif ( size === 3 ) {\n\n\t\t\t\t// #ff0\n\t\t\t\tthis.r = parseInt( hex.charAt( 0 ) + hex.charAt( 0 ), 16 ) / 255;\n\t\t\t\tthis.g = parseInt( hex.charAt( 1 ) + hex.charAt( 1 ), 16 ) / 255;\n\t\t\t\tthis.b = parseInt( hex.charAt( 2 ) + hex.charAt( 2 ), 16 ) / 255;\n\n\t\t\t\treturn this;\n\n\t\t\t} else if ( size === 6 ) {\n\n\t\t\t\t// #ff0000\n\t\t\t\tthis.r = parseInt( hex.charAt( 0 ) + hex.charAt( 1 ), 16 ) / 255;\n\t\t\t\tthis.g = parseInt( hex.charAt( 2 ) + hex.charAt( 3 ), 16 ) / 255;\n\t\t\t\tthis.b = parseInt( hex.charAt( 4 ) + hex.charAt( 5 ), 16 ) / 255;\n\n\t\t\t\treturn this;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( style && style.length > 0 ) {\n\n\t\t\treturn this.setColorName( style );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetColorName( style ) {\n\n\t\t// color keywords\n\t\tconst hex = _colorKeywords[ style ];\n\n\t\tif ( hex !== undefined ) {\n\n\t\t\t// red\n\t\t\tthis.setHex( hex );\n\n\t\t} else {\n\n\t\t\t// unknown color\n\t\t\tconsole.warn( 'THREE.Color: Unknown color ' + style );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor( this.r, this.g, this.b );\n\n\t}\n\n\tcopy( color ) {\n\n\t\tthis.r = color.r;\n\t\tthis.g = color.g;\n\t\tthis.b = color.b;\n\n\t\treturn this;\n\n\t}\n\n\tcopyGammaToLinear( color, gammaFactor = 2.0 ) {\n\n\t\tthis.r = Math.pow( color.r, gammaFactor );\n\t\tthis.g = Math.pow( color.g, gammaFactor );\n\t\tthis.b = Math.pow( color.b, gammaFactor );\n\n\t\treturn this;\n\n\t}\n\n\tcopyLinearToGamma( color, gammaFactor = 2.0 ) {\n\n\t\tconst safeInverse = ( gammaFactor > 0 ) ? ( 1.0 / gammaFactor ) : 1.0;\n\n\t\tthis.r = Math.pow( color.r, safeInverse );\n\t\tthis.g = Math.pow( color.g, safeInverse );\n\t\tthis.b = Math.pow( color.b, safeInverse );\n\n\t\treturn this;\n\n\t}\n\n\tconvertGammaToLinear( gammaFactor ) {\n\n\t\tthis.copyGammaToLinear( this, gammaFactor );\n\n\t\treturn this;\n\n\t}\n\n\tconvertLinearToGamma( gammaFactor ) {\n\n\t\tthis.copyLinearToGamma( this, gammaFactor );\n\n\t\treturn this;\n\n\t}\n\n\tcopySRGBToLinear( color ) {\n\n\t\tthis.r = SRGBToLinear( color.r );\n\t\tthis.g = SRGBToLinear( color.g );\n\t\tthis.b = SRGBToLinear( color.b );\n\n\t\treturn this;\n\n\t}\n\n\tcopyLinearToSRGB( color ) {\n\n\t\tthis.r = LinearToSRGB( color.r );\n\t\tthis.g = LinearToSRGB( color.g );\n\t\tthis.b = LinearToSRGB( color.b );\n\n\t\treturn this;\n\n\t}\n\n\tconvertSRGBToLinear() {\n\n\t\tthis.copySRGBToLinear( this );\n\n\t\treturn this;\n\n\t}\n\n\tconvertLinearToSRGB() {\n\n\t\tthis.copyLinearToSRGB( this );\n\n\t\treturn this;\n\n\t}\n\n\tgetHex() {\n\n\t\treturn ( this.r * 255 ) << 16 ^ ( this.g * 255 ) << 8 ^ ( this.b * 255 ) << 0;\n\n\t}\n\n\tgetHexString() {\n\n\t\treturn ( '000000' + this.getHex().toString( 16 ) ).slice( - 6 );\n\n\t}\n\n\tgetHSL( target ) {\n\n\t\t// h,s,l ranges are in 0.0 - 1.0\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Color: .getHSL() target is now required' );\n\t\t\ttarget = { h: 0, s: 0, l: 0 };\n\n\t\t}\n\n\t\tconst r = this.r, g = this.g, b = this.b;\n\n\t\tconst max = Math.max( r, g, b );\n\t\tconst min = Math.min( r, g, b );\n\n\t\tlet hue, saturation;\n\t\tconst lightness = ( min + max ) / 2.0;\n\n\t\tif ( min === max ) {\n\n\t\t\thue = 0;\n\t\t\tsaturation = 0;\n\n\t\t} else {\n\n\t\t\tconst delta = max - min;\n\n\t\t\tsaturation = lightness <= 0.5 ? delta / ( max + min ) : delta / ( 2 - max - min );\n\n\t\t\tswitch ( max ) {\n\n\t\t\t\tcase r: hue = ( g - b ) / delta + ( g < b ? 6 : 0 ); break;\n\t\t\t\tcase g: hue = ( b - r ) / delta + 2; break;\n\t\t\t\tcase b: hue = ( r - g ) / delta + 4; break;\n\n\t\t\t}\n\n\t\t\thue /= 6;\n\n\t\t}\n\n\t\ttarget.h = hue;\n\t\ttarget.s = saturation;\n\t\ttarget.l = lightness;\n\n\t\treturn target;\n\n\t}\n\n\tgetStyle() {\n\n\t\treturn 'rgb(' + ( ( this.r * 255 ) | 0 ) + ',' + ( ( this.g * 255 ) | 0 ) + ',' + ( ( this.b * 255 ) | 0 ) + ')';\n\n\t}\n\n\toffsetHSL( h, s, l ) {\n\n\t\tthis.getHSL( _hslA );\n\n\t\t_hslA.h += h; _hslA.s += s; _hslA.l += l;\n\n\t\tthis.setHSL( _hslA.h, _hslA.s, _hslA.l );\n\n\t\treturn this;\n\n\t}\n\n\tadd( color ) {\n\n\t\tthis.r += color.r;\n\t\tthis.g += color.g;\n\t\tthis.b += color.b;\n\n\t\treturn this;\n\n\t}\n\n\taddColors( color1, color2 ) {\n\n\t\tthis.r = color1.r + color2.r;\n\t\tthis.g = color1.g + color2.g;\n\t\tthis.b = color1.b + color2.b;\n\n\t\treturn this;\n\n\t}\n\n\taddScalar( s ) {\n\n\t\tthis.r += s;\n\t\tthis.g += s;\n\t\tthis.b += s;\n\n\t\treturn this;\n\n\t}\n\n\tsub( color ) {\n\n\t\tthis.r = Math.max( 0, this.r - color.r );\n\t\tthis.g = Math.max( 0, this.g - color.g );\n\t\tthis.b = Math.max( 0, this.b - color.b );\n\n\t\treturn this;\n\n\t}\n\n\tmultiply( color ) {\n\n\t\tthis.r *= color.r;\n\t\tthis.g *= color.g;\n\t\tthis.b *= color.b;\n\n\t\treturn this;\n\n\t}\n\n\tmultiplyScalar( s ) {\n\n\t\tthis.r *= s;\n\t\tthis.g *= s;\n\t\tthis.b *= s;\n\n\t\treturn this;\n\n\t}\n\n\tlerp( color, alpha ) {\n\n\t\tthis.r += ( color.r - this.r ) * alpha;\n\t\tthis.g += ( color.g - this.g ) * alpha;\n\t\tthis.b += ( color.b - this.b ) * alpha;\n\n\t\treturn this;\n\n\t}\n\n\tlerpHSL( color, alpha ) {\n\n\t\tthis.getHSL( _hslA );\n\t\tcolor.getHSL( _hslB );\n\n\t\tconst h = MathUtils.lerp( _hslA.h, _hslB.h, alpha );\n\t\tconst s = MathUtils.lerp( _hslA.s, _hslB.s, alpha );\n\t\tconst l = MathUtils.lerp( _hslA.l, _hslB.l, alpha );\n\n\t\tthis.setHSL( h, s, l );\n\n\t\treturn this;\n\n\t}\n\n\tequals( c ) {\n\n\t\treturn ( c.r === this.r ) && ( c.g === this.g ) && ( c.b === this.b );\n\n\t}\n\n\tfromArray( array, offset = 0 ) {\n\n\t\tthis.r = array[ offset ];\n\t\tthis.g = array[ offset + 1 ];\n\t\tthis.b = array[ offset + 2 ];\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tarray[ offset ] = this.r;\n\t\tarray[ offset + 1 ] = this.g;\n\t\tarray[ offset + 2 ] = this.b;\n\n\t\treturn array;\n\n\t}\n\n\tfromBufferAttribute( attribute, index ) {\n\n\t\tthis.r = attribute.getX( index );\n\t\tthis.g = attribute.getY( index );\n\t\tthis.b = attribute.getZ( index );\n\n\t\tif ( attribute.normalized === true ) {\n\n\t\t\t// assuming Uint8Array\n\n\t\t\tthis.r /= 255;\n\t\t\tthis.g /= 255;\n\t\t\tthis.b /= 255;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON() {\n\n\t\treturn this.getHex();\n\n\t}\n\n}\n\nColor.NAMES = _colorKeywords;\nColor.prototype.r = 1;\nColor.prototype.g = 1;\nColor.prototype.b = 1;\n\nclass Face3 {\n\n\tconstructor( a, b, c, normal, color, materialIndex = 0 ) {\n\n\t\tthis.a = a;\n\t\tthis.b = b;\n\t\tthis.c = c;\n\n\t\tthis.normal = ( normal && normal.isVector3 ) ? normal : new Vector3();\n\t\tthis.vertexNormals = Array.isArray( normal ) ? normal : [];\n\n\t\tthis.color = ( color && color.isColor ) ? color : new Color();\n\t\tthis.vertexColors = Array.isArray( color ) ? color : [];\n\n\t\tthis.materialIndex = materialIndex;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tthis.a = source.a;\n\t\tthis.b = source.b;\n\t\tthis.c = source.c;\n\n\t\tthis.normal.copy( source.normal );\n\t\tthis.color.copy( source.color );\n\n\t\tthis.materialIndex = source.materialIndex;\n\n\t\tfor ( let i = 0, il = source.vertexNormals.length; i < il; i ++ ) {\n\n\t\t\tthis.vertexNormals[ i ] = source.vertexNormals[ i ].clone();\n\n\t\t}\n\n\t\tfor ( let i = 0, il = source.vertexColors.length; i < il; i ++ ) {\n\n\t\t\tthis.vertexColors[ i ] = source.vertexColors[ i ].clone();\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n}\n\nlet materialId = 0;\n\nfunction Material() {\n\n\tObject.defineProperty( this, 'id', { value: materialId ++ } );\n\n\tthis.uuid = MathUtils.generateUUID();\n\n\tthis.name = '';\n\tthis.type = 'Material';\n\n\tthis.fog = true;\n\n\tthis.blending = NormalBlending;\n\tthis.side = FrontSide;\n\tthis.flatShading = false;\n\tthis.vertexColors = false;\n\n\tthis.opacity = 1;\n\tthis.transparent = false;\n\n\tthis.blendSrc = SrcAlphaFactor;\n\tthis.blendDst = OneMinusSrcAlphaFactor;\n\tthis.blendEquation = AddEquation;\n\tthis.blendSrcAlpha = null;\n\tthis.blendDstAlpha = null;\n\tthis.blendEquationAlpha = null;\n\n\tthis.depthFunc = LessEqualDepth;\n\tthis.depthTest = true;\n\tthis.depthWrite = true;\n\n\tthis.stencilWriteMask = 0xff;\n\tthis.stencilFunc = AlwaysStencilFunc;\n\tthis.stencilRef = 0;\n\tthis.stencilFuncMask = 0xff;\n\tthis.stencilFail = KeepStencilOp;\n\tthis.stencilZFail = KeepStencilOp;\n\tthis.stencilZPass = KeepStencilOp;\n\tthis.stencilWrite = false;\n\n\tthis.clippingPlanes = null;\n\tthis.clipIntersection = false;\n\tthis.clipShadows = false;\n\n\tthis.shadowSide = null;\n\n\tthis.colorWrite = true;\n\n\tthis.precision = null; // override the renderer's default precision for this material\n\n\tthis.polygonOffset = false;\n\tthis.polygonOffsetFactor = 0;\n\tthis.polygonOffsetUnits = 0;\n\n\tthis.dithering = false;\n\n\tthis.alphaTest = 0;\n\tthis.premultipliedAlpha = false;\n\n\tthis.visible = true;\n\n\tthis.toneMapped = true;\n\n\tthis.userData = {};\n\n\tthis.version = 0;\n\n}\n\nMaterial.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {\n\n\tconstructor: Material,\n\n\tisMaterial: true,\n\n\tonBeforeCompile: function ( /* shaderobject, renderer */ ) {},\n\n\tcustomProgramCacheKey: function () {\n\n\t\treturn this.onBeforeCompile.toString();\n\n\t},\n\n\tsetValues: function ( values ) {\n\n\t\tif ( values === undefined ) return;\n\n\t\tfor ( const key in values ) {\n\n\t\t\tconst newValue = values[ key ];\n\n\t\t\tif ( newValue === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.Material: \\'' + key + '\\' parameter is undefined.' );\n\t\t\t\tcontinue;\n\n\t\t\t}\n\n\t\t\t// for backward compatability if shading is set in the constructor\n\t\t\tif ( key === 'shading' ) {\n\n\t\t\t\tconsole.warn( 'THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.' );\n\t\t\t\tthis.flatShading = ( newValue === FlatShading ) ? true : false;\n\t\t\t\tcontinue;\n\n\t\t\t}\n\n\t\t\tconst currentValue = this[ key ];\n\n\t\t\tif ( currentValue === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.' + this.type + ': \\'' + key + '\\' is not a property of this material.' );\n\t\t\t\tcontinue;\n\n\t\t\t}\n\n\t\t\tif ( currentValue && currentValue.isColor ) {\n\n\t\t\t\tcurrentValue.set( newValue );\n\n\t\t\t} else if ( ( currentValue && currentValue.isVector3 ) && ( newValue && newValue.isVector3 ) ) {\n\n\t\t\t\tcurrentValue.copy( newValue );\n\n\t\t\t} else {\n\n\t\t\t\tthis[ key ] = newValue;\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\ttoJSON: function ( meta ) {\n\n\t\tconst isRoot = ( meta === undefined || typeof meta === 'string' );\n\n\t\tif ( isRoot ) {\n\n\t\t\tmeta = {\n\t\t\t\ttextures: {},\n\t\t\t\timages: {}\n\t\t\t};\n\n\t\t}\n\n\t\tconst data = {\n\t\t\tmetadata: {\n\t\t\t\tversion: 4.5,\n\t\t\t\ttype: 'Material',\n\t\t\t\tgenerator: 'Material.toJSON'\n\t\t\t}\n\t\t};\n\n\t\t// standard Material serialization\n\t\tdata.uuid = this.uuid;\n\t\tdata.type = this.type;\n\n\t\tif ( this.name !== '' ) data.name = this.name;\n\n\t\tif ( this.color && this.color.isColor ) data.color = this.color.getHex();\n\n\t\tif ( this.roughness !== undefined ) data.roughness = this.roughness;\n\t\tif ( this.metalness !== undefined ) data.metalness = this.metalness;\n\n\t\tif ( this.sheen && this.sheen.isColor ) data.sheen = this.sheen.getHex();\n\t\tif ( this.emissive && this.emissive.isColor ) data.emissive = this.emissive.getHex();\n\t\tif ( this.emissiveIntensity && this.emissiveIntensity !== 1 ) data.emissiveIntensity = this.emissiveIntensity;\n\n\t\tif ( this.specular && this.specular.isColor ) data.specular = this.specular.getHex();\n\t\tif ( this.shininess !== undefined ) data.shininess = this.shininess;\n\t\tif ( this.clearcoat !== undefined ) data.clearcoat = this.clearcoat;\n\t\tif ( this.clearcoatRoughness !== undefined ) data.clearcoatRoughness = this.clearcoatRoughness;\n\n\t\tif ( this.clearcoatMap && this.clearcoatMap.isTexture ) {\n\n\t\t\tdata.clearcoatMap = this.clearcoatMap.toJSON( meta ).uuid;\n\n\t\t}\n\n\t\tif ( this.clearcoatRoughnessMap && this.clearcoatRoughnessMap.isTexture ) {\n\n\t\t\tdata.clearcoatRoughnessMap = this.clearcoatRoughnessMap.toJSON( meta ).uuid;\n\n\t\t}\n\n\t\tif ( this.clearcoatNormalMap && this.clearcoatNormalMap.isTexture ) {\n\n\t\t\tdata.clearcoatNormalMap = this.clearcoatNormalMap.toJSON( meta ).uuid;\n\t\t\tdata.clearcoatNormalScale = this.clearcoatNormalScale.toArray();\n\n\t\t}\n\n\t\tif ( this.map && this.map.isTexture ) data.map = this.map.toJSON( meta ).uuid;\n\t\tif ( this.matcap && this.matcap.isTexture ) data.matcap = this.matcap.toJSON( meta ).uuid;\n\t\tif ( this.alphaMap && this.alphaMap.isTexture ) data.alphaMap = this.alphaMap.toJSON( meta ).uuid;\n\t\tif ( this.lightMap && this.lightMap.isTexture ) data.lightMap = this.lightMap.toJSON( meta ).uuid;\n\n\t\tif ( this.aoMap && this.aoMap.isTexture ) {\n\n\t\t\tdata.aoMap = this.aoMap.toJSON( meta ).uuid;\n\t\t\tdata.aoMapIntensity = this.aoMapIntensity;\n\n\t\t}\n\n\t\tif ( this.bumpMap && this.bumpMap.isTexture ) {\n\n\t\t\tdata.bumpMap = this.bumpMap.toJSON( meta ).uuid;\n\t\t\tdata.bumpScale = this.bumpScale;\n\n\t\t}\n\n\t\tif ( this.normalMap && this.normalMap.isTexture ) {\n\n\t\t\tdata.normalMap = this.normalMap.toJSON( meta ).uuid;\n\t\t\tdata.normalMapType = this.normalMapType;\n\t\t\tdata.normalScale = this.normalScale.toArray();\n\n\t\t}\n\n\t\tif ( this.displacementMap && this.displacementMap.isTexture ) {\n\n\t\t\tdata.displacementMap = this.displacementMap.toJSON( meta ).uuid;\n\t\t\tdata.displacementScale = this.displacementScale;\n\t\t\tdata.displacementBias = this.displacementBias;\n\n\t\t}\n\n\t\tif ( this.roughnessMap && this.roughnessMap.isTexture ) data.roughnessMap = this.roughnessMap.toJSON( meta ).uuid;\n\t\tif ( this.metalnessMap && this.metalnessMap.isTexture ) data.metalnessMap = this.metalnessMap.toJSON( meta ).uuid;\n\n\t\tif ( this.emissiveMap && this.emissiveMap.isTexture ) data.emissiveMap = this.emissiveMap.toJSON( meta ).uuid;\n\t\tif ( this.specularMap && this.specularMap.isTexture ) data.specularMap = this.specularMap.toJSON( meta ).uuid;\n\n\t\tif ( this.envMap && this.envMap.isTexture ) {\n\n\t\t\tdata.envMap = this.envMap.toJSON( meta ).uuid;\n\t\t\tdata.reflectivity = this.reflectivity; // Scale behind envMap\n\t\t\tdata.refractionRatio = this.refractionRatio;\n\n\t\t\tif ( this.combine !== undefined ) data.combine = this.combine;\n\t\t\tif ( this.envMapIntensity !== undefined ) data.envMapIntensity = this.envMapIntensity;\n\n\t\t}\n\n\t\tif ( this.gradientMap && this.gradientMap.isTexture ) {\n\n\t\t\tdata.gradientMap = this.gradientMap.toJSON( meta ).uuid;\n\n\t\t}\n\n\t\tif ( this.size !== undefined ) data.size = this.size;\n\t\tif ( this.sizeAttenuation !== undefined ) data.sizeAttenuation = this.sizeAttenuation;\n\n\t\tif ( this.blending !== NormalBlending ) data.blending = this.blending;\n\t\tif ( this.flatShading === true ) data.flatShading = this.flatShading;\n\t\tif ( this.side !== FrontSide ) data.side = this.side;\n\t\tif ( this.vertexColors ) data.vertexColors = true;\n\n\t\tif ( this.opacity < 1 ) data.opacity = this.opacity;\n\t\tif ( this.transparent === true ) data.transparent = this.transparent;\n\n\t\tdata.depthFunc = this.depthFunc;\n\t\tdata.depthTest = this.depthTest;\n\t\tdata.depthWrite = this.depthWrite;\n\n\t\tdata.stencilWrite = this.stencilWrite;\n\t\tdata.stencilWriteMask = this.stencilWriteMask;\n\t\tdata.stencilFunc = this.stencilFunc;\n\t\tdata.stencilRef = this.stencilRef;\n\t\tdata.stencilFuncMask = this.stencilFuncMask;\n\t\tdata.stencilFail = this.stencilFail;\n\t\tdata.stencilZFail = this.stencilZFail;\n\t\tdata.stencilZPass = this.stencilZPass;\n\n\t\t// rotation (SpriteMaterial)\n\t\tif ( this.rotation && this.rotation !== 0 ) data.rotation = this.rotation;\n\n\t\tif ( this.polygonOffset === true ) data.polygonOffset = true;\n\t\tif ( this.polygonOffsetFactor !== 0 ) data.polygonOffsetFactor = this.polygonOffsetFactor;\n\t\tif ( this.polygonOffsetUnits !== 0 ) data.polygonOffsetUnits = this.polygonOffsetUnits;\n\n\t\tif ( this.linewidth && this.linewidth !== 1 ) data.linewidth = this.linewidth;\n\t\tif ( this.dashSize !== undefined ) data.dashSize = this.dashSize;\n\t\tif ( this.gapSize !== undefined ) data.gapSize = this.gapSize;\n\t\tif ( this.scale !== undefined ) data.scale = this.scale;\n\n\t\tif ( this.dithering === true ) data.dithering = true;\n\n\t\tif ( this.alphaTest > 0 ) data.alphaTest = this.alphaTest;\n\t\tif ( this.premultipliedAlpha === true ) data.premultipliedAlpha = this.premultipliedAlpha;\n\n\t\tif ( this.wireframe === true ) data.wireframe = this.wireframe;\n\t\tif ( this.wireframeLinewidth > 1 ) data.wireframeLinewidth = this.wireframeLinewidth;\n\t\tif ( this.wireframeLinecap !== 'round' ) data.wireframeLinecap = this.wireframeLinecap;\n\t\tif ( this.wireframeLinejoin !== 'round' ) data.wireframeLinejoin = this.wireframeLinejoin;\n\n\t\tif ( this.morphTargets === true ) data.morphTargets = true;\n\t\tif ( this.morphNormals === true ) data.morphNormals = true;\n\t\tif ( this.skinning === true ) data.skinning = true;\n\n\t\tif ( this.visible === false ) data.visible = false;\n\n\t\tif ( this.toneMapped === false ) data.toneMapped = false;\n\n\t\tif ( JSON.stringify( this.userData ) !== '{}' ) data.userData = this.userData;\n\n\t\t// TODO: Copied from Object3D.toJSON\n\n\t\tfunction extractFromCache( cache ) {\n\n\t\t\tconst values = [];\n\n\t\t\tfor ( const key in cache ) {\n\n\t\t\t\tconst data = cache[ key ];\n\t\t\t\tdelete data.metadata;\n\t\t\t\tvalues.push( data );\n\n\t\t\t}\n\n\t\t\treturn values;\n\n\t\t}\n\n\t\tif ( isRoot ) {\n\n\t\t\tconst textures = extractFromCache( meta.textures );\n\t\t\tconst images = extractFromCache( meta.images );\n\n\t\t\tif ( textures.length > 0 ) data.textures = textures;\n\t\t\tif ( images.length > 0 ) data.images = images;\n\n\t\t}\n\n\t\treturn data;\n\n\t},\n\n\tclone: function () {\n\n\t\treturn new this.constructor().copy( this );\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\tthis.name = source.name;\n\n\t\tthis.fog = source.fog;\n\n\t\tthis.blending = source.blending;\n\t\tthis.side = source.side;\n\t\tthis.flatShading = source.flatShading;\n\t\tthis.vertexColors = source.vertexColors;\n\n\t\tthis.opacity = source.opacity;\n\t\tthis.transparent = source.transparent;\n\n\t\tthis.blendSrc = source.blendSrc;\n\t\tthis.blendDst = source.blendDst;\n\t\tthis.blendEquation = source.blendEquation;\n\t\tthis.blendSrcAlpha = source.blendSrcAlpha;\n\t\tthis.blendDstAlpha = source.blendDstAlpha;\n\t\tthis.blendEquationAlpha = source.blendEquationAlpha;\n\n\t\tthis.depthFunc = source.depthFunc;\n\t\tthis.depthTest = source.depthTest;\n\t\tthis.depthWrite = source.depthWrite;\n\n\t\tthis.stencilWriteMask = source.stencilWriteMask;\n\t\tthis.stencilFunc = source.stencilFunc;\n\t\tthis.stencilRef = source.stencilRef;\n\t\tthis.stencilFuncMask = source.stencilFuncMask;\n\t\tthis.stencilFail = source.stencilFail;\n\t\tthis.stencilZFail = source.stencilZFail;\n\t\tthis.stencilZPass = source.stencilZPass;\n\t\tthis.stencilWrite = source.stencilWrite;\n\n\t\tconst srcPlanes = source.clippingPlanes;\n\t\tlet dstPlanes = null;\n\n\t\tif ( srcPlanes !== null ) {\n\n\t\t\tconst n = srcPlanes.length;\n\t\t\tdstPlanes = new Array( n );\n\n\t\t\tfor ( let i = 0; i !== n; ++ i ) {\n\n\t\t\t\tdstPlanes[ i ] = srcPlanes[ i ].clone();\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis.clippingPlanes = dstPlanes;\n\t\tthis.clipIntersection = source.clipIntersection;\n\t\tthis.clipShadows = source.clipShadows;\n\n\t\tthis.shadowSide = source.shadowSide;\n\n\t\tthis.colorWrite = source.colorWrite;\n\n\t\tthis.precision = source.precision;\n\n\t\tthis.polygonOffset = source.polygonOffset;\n\t\tthis.polygonOffsetFactor = source.polygonOffsetFactor;\n\t\tthis.polygonOffsetUnits = source.polygonOffsetUnits;\n\n\t\tthis.dithering = source.dithering;\n\n\t\tthis.alphaTest = source.alphaTest;\n\t\tthis.premultipliedAlpha = source.premultipliedAlpha;\n\n\t\tthis.visible = source.visible;\n\n\t\tthis.toneMapped = source.toneMapped;\n\n\t\tthis.userData = JSON.parse( JSON.stringify( source.userData ) );\n\n\t\treturn this;\n\n\t},\n\n\tdispose: function () {\n\n\t\tthis.dispatchEvent( { type: 'dispose' } );\n\n\t}\n\n} );\n\nObject.defineProperty( Material.prototype, 'needsUpdate', {\n\n\tset: function ( value ) {\n\n\t\tif ( value === true ) this.version ++;\n\n\t}\n\n} );\n\n/**\n * parameters = {\n *  color: <hex>,\n *  opacity: <float>,\n *  map: new THREE.Texture( <Image> ),\n *\n *  lightMap: new THREE.Texture( <Image> ),\n *  lightMapIntensity: <float>\n *\n *  aoMap: new THREE.Texture( <Image> ),\n *  aoMapIntensity: <float>\n *\n *  specularMap: new THREE.Texture( <Image> ),\n *\n *  alphaMap: new THREE.Texture( <Image> ),\n *\n *  envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),\n *  combine: THREE.Multiply,\n *  reflectivity: <float>,\n *  refractionRatio: <float>,\n *\n *  depthTest: <bool>,\n *  depthWrite: <bool>,\n *\n *  wireframe: <boolean>,\n *  wireframeLinewidth: <float>,\n *\n *  skinning: <bool>,\n *  morphTargets: <bool>\n * }\n */\n\nfunction MeshBasicMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.type = 'MeshBasicMaterial';\n\n\tthis.color = new Color( 0xffffff ); // emissive\n\n\tthis.map = null;\n\n\tthis.lightMap = null;\n\tthis.lightMapIntensity = 1.0;\n\n\tthis.aoMap = null;\n\tthis.aoMapIntensity = 1.0;\n\n\tthis.specularMap = null;\n\n\tthis.alphaMap = null;\n\n\tthis.envMap = null;\n\tthis.combine = MultiplyOperation;\n\tthis.reflectivity = 1;\n\tthis.refractionRatio = 0.98;\n\n\tthis.wireframe = false;\n\tthis.wireframeLinewidth = 1;\n\tthis.wireframeLinecap = 'round';\n\tthis.wireframeLinejoin = 'round';\n\n\tthis.skinning = false;\n\tthis.morphTargets = false;\n\n\tthis.setValues( parameters );\n\n}\n\nMeshBasicMaterial.prototype = Object.create( Material.prototype );\nMeshBasicMaterial.prototype.constructor = MeshBasicMaterial;\n\nMeshBasicMaterial.prototype.isMeshBasicMaterial = true;\n\nMeshBasicMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.color.copy( source.color );\n\n\tthis.map = source.map;\n\n\tthis.lightMap = source.lightMap;\n\tthis.lightMapIntensity = source.lightMapIntensity;\n\n\tthis.aoMap = source.aoMap;\n\tthis.aoMapIntensity = source.aoMapIntensity;\n\n\tthis.specularMap = source.specularMap;\n\n\tthis.alphaMap = source.alphaMap;\n\n\tthis.envMap = source.envMap;\n\tthis.combine = source.combine;\n\tthis.reflectivity = source.reflectivity;\n\tthis.refractionRatio = source.refractionRatio;\n\n\tthis.wireframe = source.wireframe;\n\tthis.wireframeLinewidth = source.wireframeLinewidth;\n\tthis.wireframeLinecap = source.wireframeLinecap;\n\tthis.wireframeLinejoin = source.wireframeLinejoin;\n\n\tthis.skinning = source.skinning;\n\tthis.morphTargets = source.morphTargets;\n\n\treturn this;\n\n};\n\nconst _vector$3 = new Vector3();\nconst _vector2$1 = new Vector2();\n\nfunction BufferAttribute( array, itemSize, normalized ) {\n\n\tif ( Array.isArray( array ) ) {\n\n\t\tthrow new TypeError( 'THREE.BufferAttribute: array should be a Typed Array.' );\n\n\t}\n\n\tthis.name = '';\n\n\tthis.array = array;\n\tthis.itemSize = itemSize;\n\tthis.count = array !== undefined ? array.length / itemSize : 0;\n\tthis.normalized = normalized === true;\n\n\tthis.usage = StaticDrawUsage;\n\tthis.updateRange = { offset: 0, count: - 1 };\n\n\tthis.version = 0;\n\n}\n\nObject.defineProperty( BufferAttribute.prototype, 'needsUpdate', {\n\n\tset: function ( value ) {\n\n\t\tif ( value === true ) this.version ++;\n\n\t}\n\n} );\n\nObject.assign( BufferAttribute.prototype, {\n\n\tisBufferAttribute: true,\n\n\tonUploadCallback: function () {},\n\n\tsetUsage: function ( value ) {\n\n\t\tthis.usage = value;\n\n\t\treturn this;\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\tthis.name = source.name;\n\t\tthis.array = new source.array.constructor( source.array );\n\t\tthis.itemSize = source.itemSize;\n\t\tthis.count = source.count;\n\t\tthis.normalized = source.normalized;\n\n\t\tthis.usage = source.usage;\n\n\t\treturn this;\n\n\t},\n\n\tcopyAt: function ( index1, attribute, index2 ) {\n\n\t\tindex1 *= this.itemSize;\n\t\tindex2 *= attribute.itemSize;\n\n\t\tfor ( let i = 0, l = this.itemSize; i < l; i ++ ) {\n\n\t\t\tthis.array[ index1 + i ] = attribute.array[ index2 + i ];\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tcopyArray: function ( array ) {\n\n\t\tthis.array.set( array );\n\n\t\treturn this;\n\n\t},\n\n\tcopyColorsArray: function ( colors ) {\n\n\t\tconst array = this.array;\n\t\tlet offset = 0;\n\n\t\tfor ( let i = 0, l = colors.length; i < l; i ++ ) {\n\n\t\t\tlet color = colors[ i ];\n\n\t\t\tif ( color === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.BufferAttribute.copyColorsArray(): color is undefined', i );\n\t\t\t\tcolor = new Color();\n\n\t\t\t}\n\n\t\t\tarray[ offset ++ ] = color.r;\n\t\t\tarray[ offset ++ ] = color.g;\n\t\t\tarray[ offset ++ ] = color.b;\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tcopyVector2sArray: function ( vectors ) {\n\n\t\tconst array = this.array;\n\t\tlet offset = 0;\n\n\t\tfor ( let i = 0, l = vectors.length; i < l; i ++ ) {\n\n\t\t\tlet vector = vectors[ i ];\n\n\t\t\tif ( vector === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.BufferAttribute.copyVector2sArray(): vector is undefined', i );\n\t\t\t\tvector = new Vector2();\n\n\t\t\t}\n\n\t\t\tarray[ offset ++ ] = vector.x;\n\t\t\tarray[ offset ++ ] = vector.y;\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tcopyVector3sArray: function ( vectors ) {\n\n\t\tconst array = this.array;\n\t\tlet offset = 0;\n\n\t\tfor ( let i = 0, l = vectors.length; i < l; i ++ ) {\n\n\t\t\tlet vector = vectors[ i ];\n\n\t\t\tif ( vector === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.BufferAttribute.copyVector3sArray(): vector is undefined', i );\n\t\t\t\tvector = new Vector3();\n\n\t\t\t}\n\n\t\t\tarray[ offset ++ ] = vector.x;\n\t\t\tarray[ offset ++ ] = vector.y;\n\t\t\tarray[ offset ++ ] = vector.z;\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tcopyVector4sArray: function ( vectors ) {\n\n\t\tconst array = this.array;\n\t\tlet offset = 0;\n\n\t\tfor ( let i = 0, l = vectors.length; i < l; i ++ ) {\n\n\t\t\tlet vector = vectors[ i ];\n\n\t\t\tif ( vector === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.BufferAttribute.copyVector4sArray(): vector is undefined', i );\n\t\t\t\tvector = new Vector4();\n\n\t\t\t}\n\n\t\t\tarray[ offset ++ ] = vector.x;\n\t\t\tarray[ offset ++ ] = vector.y;\n\t\t\tarray[ offset ++ ] = vector.z;\n\t\t\tarray[ offset ++ ] = vector.w;\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tapplyMatrix3: function ( m ) {\n\n\t\tif ( this.itemSize === 2 ) {\n\n\t\t\tfor ( let i = 0, l = this.count; i < l; i ++ ) {\n\n\t\t\t\t_vector2$1.fromBufferAttribute( this, i );\n\t\t\t\t_vector2$1.applyMatrix3( m );\n\n\t\t\t\tthis.setXY( i, _vector2$1.x, _vector2$1.y );\n\n\t\t\t}\n\n\t\t} else if ( this.itemSize === 3 ) {\n\n\t\t\tfor ( let i = 0, l = this.count; i < l; i ++ ) {\n\n\t\t\t\t_vector$3.fromBufferAttribute( this, i );\n\t\t\t\t_vector$3.applyMatrix3( m );\n\n\t\t\t\tthis.setXYZ( i, _vector$3.x, _vector$3.y, _vector$3.z );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tapplyMatrix4: function ( m ) {\n\n\t\tfor ( let i = 0, l = this.count; i < l; i ++ ) {\n\n\t\t\t_vector$3.x = this.getX( i );\n\t\t\t_vector$3.y = this.getY( i );\n\t\t\t_vector$3.z = this.getZ( i );\n\n\t\t\t_vector$3.applyMatrix4( m );\n\n\t\t\tthis.setXYZ( i, _vector$3.x, _vector$3.y, _vector$3.z );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tapplyNormalMatrix: function ( m ) {\n\n\t\tfor ( let i = 0, l = this.count; i < l; i ++ ) {\n\n\t\t\t_vector$3.x = this.getX( i );\n\t\t\t_vector$3.y = this.getY( i );\n\t\t\t_vector$3.z = this.getZ( i );\n\n\t\t\t_vector$3.applyNormalMatrix( m );\n\n\t\t\tthis.setXYZ( i, _vector$3.x, _vector$3.y, _vector$3.z );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\ttransformDirection: function ( m ) {\n\n\t\tfor ( let i = 0, l = this.count; i < l; i ++ ) {\n\n\t\t\t_vector$3.x = this.getX( i );\n\t\t\t_vector$3.y = this.getY( i );\n\t\t\t_vector$3.z = this.getZ( i );\n\n\t\t\t_vector$3.transformDirection( m );\n\n\t\t\tthis.setXYZ( i, _vector$3.x, _vector$3.y, _vector$3.z );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tset: function ( value, offset = 0 ) {\n\n\t\tthis.array.set( value, offset );\n\n\t\treturn this;\n\n\t},\n\n\tgetX: function ( index ) {\n\n\t\treturn this.array[ index * this.itemSize ];\n\n\t},\n\n\tsetX: function ( index, x ) {\n\n\t\tthis.array[ index * this.itemSize ] = x;\n\n\t\treturn this;\n\n\t},\n\n\tgetY: function ( index ) {\n\n\t\treturn this.array[ index * this.itemSize + 1 ];\n\n\t},\n\n\tsetY: function ( index, y ) {\n\n\t\tthis.array[ index * this.itemSize + 1 ] = y;\n\n\t\treturn this;\n\n\t},\n\n\tgetZ: function ( index ) {\n\n\t\treturn this.array[ index * this.itemSize + 2 ];\n\n\t},\n\n\tsetZ: function ( index, z ) {\n\n\t\tthis.array[ index * this.itemSize + 2 ] = z;\n\n\t\treturn this;\n\n\t},\n\n\tgetW: function ( index ) {\n\n\t\treturn this.array[ index * this.itemSize + 3 ];\n\n\t},\n\n\tsetW: function ( index, w ) {\n\n\t\tthis.array[ index * this.itemSize + 3 ] = w;\n\n\t\treturn this;\n\n\t},\n\n\tsetXY: function ( index, x, y ) {\n\n\t\tindex *= this.itemSize;\n\n\t\tthis.array[ index + 0 ] = x;\n\t\tthis.array[ index + 1 ] = y;\n\n\t\treturn this;\n\n\t},\n\n\tsetXYZ: function ( index, x, y, z ) {\n\n\t\tindex *= this.itemSize;\n\n\t\tthis.array[ index + 0 ] = x;\n\t\tthis.array[ index + 1 ] = y;\n\t\tthis.array[ index + 2 ] = z;\n\n\t\treturn this;\n\n\t},\n\n\tsetXYZW: function ( index, x, y, z, w ) {\n\n\t\tindex *= this.itemSize;\n\n\t\tthis.array[ index + 0 ] = x;\n\t\tthis.array[ index + 1 ] = y;\n\t\tthis.array[ index + 2 ] = z;\n\t\tthis.array[ index + 3 ] = w;\n\n\t\treturn this;\n\n\t},\n\n\tonUpload: function ( callback ) {\n\n\t\tthis.onUploadCallback = callback;\n\n\t\treturn this;\n\n\t},\n\n\tclone: function () {\n\n\t\treturn new this.constructor( this.array, this.itemSize ).copy( this );\n\n\t},\n\n\ttoJSON: function () {\n\n\t\treturn {\n\t\t\titemSize: this.itemSize,\n\t\t\ttype: this.array.constructor.name,\n\t\t\tarray: Array.prototype.slice.call( this.array ),\n\t\t\tnormalized: this.normalized\n\t\t};\n\n\t}\n\n} );\n\n//\n\nfunction Int8BufferAttribute( array, itemSize, normalized ) {\n\n\tBufferAttribute.call( this, new Int8Array( array ), itemSize, normalized );\n\n}\n\nInt8BufferAttribute.prototype = Object.create( BufferAttribute.prototype );\nInt8BufferAttribute.prototype.constructor = Int8BufferAttribute;\n\n\nfunction Uint8BufferAttribute( array, itemSize, normalized ) {\n\n\tBufferAttribute.call( this, new Uint8Array( array ), itemSize, normalized );\n\n}\n\nUint8BufferAttribute.prototype = Object.create( BufferAttribute.prototype );\nUint8BufferAttribute.prototype.constructor = Uint8BufferAttribute;\n\n\nfunction Uint8ClampedBufferAttribute( array, itemSize, normalized ) {\n\n\tBufferAttribute.call( this, new Uint8ClampedArray( array ), itemSize, normalized );\n\n}\n\nUint8ClampedBufferAttribute.prototype = Object.create( BufferAttribute.prototype );\nUint8ClampedBufferAttribute.prototype.constructor = Uint8ClampedBufferAttribute;\n\n\nfunction Int16BufferAttribute( array, itemSize, normalized ) {\n\n\tBufferAttribute.call( this, new Int16Array( array ), itemSize, normalized );\n\n}\n\nInt16BufferAttribute.prototype = Object.create( BufferAttribute.prototype );\nInt16BufferAttribute.prototype.constructor = Int16BufferAttribute;\n\n\nfunction Uint16BufferAttribute( array, itemSize, normalized ) {\n\n\tBufferAttribute.call( this, new Uint16Array( array ), itemSize, normalized );\n\n}\n\nUint16BufferAttribute.prototype = Object.create( BufferAttribute.prototype );\nUint16BufferAttribute.prototype.constructor = Uint16BufferAttribute;\n\n\nfunction Int32BufferAttribute( array, itemSize, normalized ) {\n\n\tBufferAttribute.call( this, new Int32Array( array ), itemSize, normalized );\n\n}\n\nInt32BufferAttribute.prototype = Object.create( BufferAttribute.prototype );\nInt32BufferAttribute.prototype.constructor = Int32BufferAttribute;\n\n\nfunction Uint32BufferAttribute( array, itemSize, normalized ) {\n\n\tBufferAttribute.call( this, new Uint32Array( array ), itemSize, normalized );\n\n}\n\nUint32BufferAttribute.prototype = Object.create( BufferAttribute.prototype );\nUint32BufferAttribute.prototype.constructor = Uint32BufferAttribute;\n\nfunction Float16BufferAttribute( array, itemSize, normalized ) {\n\n\tBufferAttribute.call( this, new Uint16Array( array ), itemSize, normalized );\n\n}\n\nFloat16BufferAttribute.prototype = Object.create( BufferAttribute.prototype );\nFloat16BufferAttribute.prototype.constructor = Float16BufferAttribute;\nFloat16BufferAttribute.prototype.isFloat16BufferAttribute = true;\n\nfunction Float32BufferAttribute( array, itemSize, normalized ) {\n\n\tBufferAttribute.call( this, new Float32Array( array ), itemSize, normalized );\n\n}\n\nFloat32BufferAttribute.prototype = Object.create( BufferAttribute.prototype );\nFloat32BufferAttribute.prototype.constructor = Float32BufferAttribute;\n\n\nfunction Float64BufferAttribute( array, itemSize, normalized ) {\n\n\tBufferAttribute.call( this, new Float64Array( array ), itemSize, normalized );\n\n}\n\nFloat64BufferAttribute.prototype = Object.create( BufferAttribute.prototype );\nFloat64BufferAttribute.prototype.constructor = Float64BufferAttribute;\n\nclass DirectGeometry {\n\n\tconstructor() {\n\n\t\tthis.vertices = [];\n\t\tthis.normals = [];\n\t\tthis.colors = [];\n\t\tthis.uvs = [];\n\t\tthis.uvs2 = [];\n\n\t\tthis.groups = [];\n\n\t\tthis.morphTargets = {};\n\n\t\tthis.skinWeights = [];\n\t\tthis.skinIndices = [];\n\n\t\t// this.lineDistances = [];\n\n\t\tthis.boundingBox = null;\n\t\tthis.boundingSphere = null;\n\n\t\t// update flags\n\n\t\tthis.verticesNeedUpdate = false;\n\t\tthis.normalsNeedUpdate = false;\n\t\tthis.colorsNeedUpdate = false;\n\t\tthis.uvsNeedUpdate = false;\n\t\tthis.groupsNeedUpdate = false;\n\n\t}\n\n\tcomputeGroups( geometry ) {\n\n\t\tconst groups = [];\n\n\t\tlet group, i;\n\t\tlet materialIndex = undefined;\n\n\t\tconst faces = geometry.faces;\n\n\t\tfor ( i = 0; i < faces.length; i ++ ) {\n\n\t\t\tconst face = faces[ i ];\n\n\t\t\t// materials\n\n\t\t\tif ( face.materialIndex !== materialIndex ) {\n\n\t\t\t\tmaterialIndex = face.materialIndex;\n\n\t\t\t\tif ( group !== undefined ) {\n\n\t\t\t\t\tgroup.count = ( i * 3 ) - group.start;\n\t\t\t\t\tgroups.push( group );\n\n\t\t\t\t}\n\n\t\t\t\tgroup = {\n\t\t\t\t\tstart: i * 3,\n\t\t\t\t\tmaterialIndex: materialIndex\n\t\t\t\t};\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( group !== undefined ) {\n\n\t\t\tgroup.count = ( i * 3 ) - group.start;\n\t\t\tgroups.push( group );\n\n\t\t}\n\n\t\tthis.groups = groups;\n\n\t}\n\n\tfromGeometry( geometry ) {\n\n\t\tconst faces = geometry.faces;\n\t\tconst vertices = geometry.vertices;\n\t\tconst faceVertexUvs = geometry.faceVertexUvs;\n\n\t\tconst hasFaceVertexUv = faceVertexUvs[ 0 ] && faceVertexUvs[ 0 ].length > 0;\n\t\tconst hasFaceVertexUv2 = faceVertexUvs[ 1 ] && faceVertexUvs[ 1 ].length > 0;\n\n\t\t// morphs\n\n\t\tconst morphTargets = geometry.morphTargets;\n\t\tconst morphTargetsLength = morphTargets.length;\n\n\t\tlet morphTargetsPosition;\n\n\t\tif ( morphTargetsLength > 0 ) {\n\n\t\t\tmorphTargetsPosition = [];\n\n\t\t\tfor ( let i = 0; i < morphTargetsLength; i ++ ) {\n\n\t\t\t\tmorphTargetsPosition[ i ] = {\n\t\t\t\t\tname: morphTargets[ i ].name,\n\t\t\t\t \tdata: []\n\t\t\t\t};\n\n\t\t\t}\n\n\t\t\tthis.morphTargets.position = morphTargetsPosition;\n\n\t\t}\n\n\t\tconst morphNormals = geometry.morphNormals;\n\t\tconst morphNormalsLength = morphNormals.length;\n\n\t\tlet morphTargetsNormal;\n\n\t\tif ( morphNormalsLength > 0 ) {\n\n\t\t\tmorphTargetsNormal = [];\n\n\t\t\tfor ( let i = 0; i < morphNormalsLength; i ++ ) {\n\n\t\t\t\tmorphTargetsNormal[ i ] = {\n\t\t\t\t\tname: morphNormals[ i ].name,\n\t\t\t\t \tdata: []\n\t\t\t\t};\n\n\t\t\t}\n\n\t\t\tthis.morphTargets.normal = morphTargetsNormal;\n\n\t\t}\n\n\t\t// skins\n\n\t\tconst skinIndices = geometry.skinIndices;\n\t\tconst skinWeights = geometry.skinWeights;\n\n\t\tconst hasSkinIndices = skinIndices.length === vertices.length;\n\t\tconst hasSkinWeights = skinWeights.length === vertices.length;\n\n\t\t//\n\n\t\tif ( vertices.length > 0 && faces.length === 0 ) {\n\n\t\t\tconsole.error( 'THREE.DirectGeometry: Faceless geometries are not supported.' );\n\n\t\t}\n\n\t\tfor ( let i = 0; i < faces.length; i ++ ) {\n\n\t\t\tconst face = faces[ i ];\n\n\t\t\tthis.vertices.push( vertices[ face.a ], vertices[ face.b ], vertices[ face.c ] );\n\n\t\t\tconst vertexNormals = face.vertexNormals;\n\n\t\t\tif ( vertexNormals.length === 3 ) {\n\n\t\t\t\tthis.normals.push( vertexNormals[ 0 ], vertexNormals[ 1 ], vertexNormals[ 2 ] );\n\n\t\t\t} else {\n\n\t\t\t\tconst normal = face.normal;\n\n\t\t\t\tthis.normals.push( normal, normal, normal );\n\n\t\t\t}\n\n\t\t\tconst vertexColors = face.vertexColors;\n\n\t\t\tif ( vertexColors.length === 3 ) {\n\n\t\t\t\tthis.colors.push( vertexColors[ 0 ], vertexColors[ 1 ], vertexColors[ 2 ] );\n\n\t\t\t} else {\n\n\t\t\t\tconst color = face.color;\n\n\t\t\t\tthis.colors.push( color, color, color );\n\n\t\t\t}\n\n\t\t\tif ( hasFaceVertexUv === true ) {\n\n\t\t\t\tconst vertexUvs = faceVertexUvs[ 0 ][ i ];\n\n\t\t\t\tif ( vertexUvs !== undefined ) {\n\n\t\t\t\t\tthis.uvs.push( vertexUvs[ 0 ], vertexUvs[ 1 ], vertexUvs[ 2 ] );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.warn( 'THREE.DirectGeometry.fromGeometry(): Undefined vertexUv ', i );\n\n\t\t\t\t\tthis.uvs.push( new Vector2(), new Vector2(), new Vector2() );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( hasFaceVertexUv2 === true ) {\n\n\t\t\t\tconst vertexUvs = faceVertexUvs[ 1 ][ i ];\n\n\t\t\t\tif ( vertexUvs !== undefined ) {\n\n\t\t\t\t\tthis.uvs2.push( vertexUvs[ 0 ], vertexUvs[ 1 ], vertexUvs[ 2 ] );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.warn( 'THREE.DirectGeometry.fromGeometry(): Undefined vertexUv2 ', i );\n\n\t\t\t\t\tthis.uvs2.push( new Vector2(), new Vector2(), new Vector2() );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// morphs\n\n\t\t\tfor ( let j = 0; j < morphTargetsLength; j ++ ) {\n\n\t\t\t\tconst morphTarget = morphTargets[ j ].vertices;\n\n\t\t\t\tmorphTargetsPosition[ j ].data.push( morphTarget[ face.a ], morphTarget[ face.b ], morphTarget[ face.c ] );\n\n\t\t\t}\n\n\t\t\tfor ( let j = 0; j < morphNormalsLength; j ++ ) {\n\n\t\t\t\tconst morphNormal = morphNormals[ j ].vertexNormals[ i ];\n\n\t\t\t\tmorphTargetsNormal[ j ].data.push( morphNormal.a, morphNormal.b, morphNormal.c );\n\n\t\t\t}\n\n\t\t\t// skins\n\n\t\t\tif ( hasSkinIndices ) {\n\n\t\t\t\tthis.skinIndices.push( skinIndices[ face.a ], skinIndices[ face.b ], skinIndices[ face.c ] );\n\n\t\t\t}\n\n\t\t\tif ( hasSkinWeights ) {\n\n\t\t\t\tthis.skinWeights.push( skinWeights[ face.a ], skinWeights[ face.b ], skinWeights[ face.c ] );\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis.computeGroups( geometry );\n\n\t\tthis.verticesNeedUpdate = geometry.verticesNeedUpdate;\n\t\tthis.normalsNeedUpdate = geometry.normalsNeedUpdate;\n\t\tthis.colorsNeedUpdate = geometry.colorsNeedUpdate;\n\t\tthis.uvsNeedUpdate = geometry.uvsNeedUpdate;\n\t\tthis.groupsNeedUpdate = geometry.groupsNeedUpdate;\n\n\t\tif ( geometry.boundingSphere !== null ) {\n\n\t\t\tthis.boundingSphere = geometry.boundingSphere.clone();\n\n\t\t}\n\n\t\tif ( geometry.boundingBox !== null ) {\n\n\t\t\tthis.boundingBox = geometry.boundingBox.clone();\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n}\n\nfunction arrayMax( array ) {\n\n\tif ( array.length === 0 ) return - Infinity;\n\n\tlet max = array[ 0 ];\n\n\tfor ( let i = 1, l = array.length; i < l; ++ i ) {\n\n\t\tif ( array[ i ] > max ) max = array[ i ];\n\n\t}\n\n\treturn max;\n\n}\n\nconst TYPED_ARRAYS = {\n\tInt8Array: Int8Array,\n\tUint8Array: Uint8Array,\n\t// Workaround for IE11 pre KB2929437. See #11440\n\tUint8ClampedArray: typeof Uint8ClampedArray !== 'undefined' ? Uint8ClampedArray : Uint8Array,\n\tInt16Array: Int16Array,\n\tUint16Array: Uint16Array,\n\tInt32Array: Int32Array,\n\tUint32Array: Uint32Array,\n\tFloat32Array: Float32Array,\n\tFloat64Array: Float64Array\n};\n\nfunction getTypedArray( type, buffer ) {\n\n\treturn new TYPED_ARRAYS[ type ]( buffer );\n\n}\n\nlet _bufferGeometryId = 1; // BufferGeometry uses odd numbers as Id\n\nconst _m1$2 = new Matrix4();\nconst _obj = new Object3D();\nconst _offset = new Vector3();\nconst _box$2 = new Box3();\nconst _boxMorphTargets = new Box3();\nconst _vector$4 = new Vector3();\n\nfunction BufferGeometry() {\n\n\tObject.defineProperty( this, 'id', { value: _bufferGeometryId += 2 } );\n\n\tthis.uuid = MathUtils.generateUUID();\n\n\tthis.name = '';\n\tthis.type = 'BufferGeometry';\n\n\tthis.index = null;\n\tthis.attributes = {};\n\n\tthis.morphAttributes = {};\n\tthis.morphTargetsRelative = false;\n\n\tthis.groups = [];\n\n\tthis.boundingBox = null;\n\tthis.boundingSphere = null;\n\n\tthis.drawRange = { start: 0, count: Infinity };\n\n\tthis.userData = {};\n\n}\n\nBufferGeometry.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {\n\n\tconstructor: BufferGeometry,\n\n\tisBufferGeometry: true,\n\n\tgetIndex: function () {\n\n\t\treturn this.index;\n\n\t},\n\n\tsetIndex: function ( index ) {\n\n\t\tif ( Array.isArray( index ) ) {\n\n\t\t\tthis.index = new ( arrayMax( index ) > 65535 ? Uint32BufferAttribute : Uint16BufferAttribute )( index, 1 );\n\n\t\t} else {\n\n\t\t\tthis.index = index;\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tgetAttribute: function ( name ) {\n\n\t\treturn this.attributes[ name ];\n\n\t},\n\n\tsetAttribute: function ( name, attribute ) {\n\n\t\tthis.attributes[ name ] = attribute;\n\n\t\treturn this;\n\n\t},\n\n\tdeleteAttribute: function ( name ) {\n\n\t\tdelete this.attributes[ name ];\n\n\t\treturn this;\n\n\t},\n\n\thasAttribute: function ( name ) {\n\n\t\treturn this.attributes[ name ] !== undefined;\n\n\t},\n\n\taddGroup: function ( start, count, materialIndex = 0 ) {\n\n\t\tthis.groups.push( {\n\n\t\t\tstart: start,\n\t\t\tcount: count,\n\t\t\tmaterialIndex: materialIndex\n\n\t\t} );\n\n\t},\n\n\tclearGroups: function () {\n\n\t\tthis.groups = [];\n\n\t},\n\n\tsetDrawRange: function ( start, count ) {\n\n\t\tthis.drawRange.start = start;\n\t\tthis.drawRange.count = count;\n\n\t},\n\n\tapplyMatrix4: function ( matrix ) {\n\n\t\tconst position = this.attributes.position;\n\n\t\tif ( position !== undefined ) {\n\n\t\t\tposition.applyMatrix4( matrix );\n\n\t\t\tposition.needsUpdate = true;\n\n\t\t}\n\n\t\tconst normal = this.attributes.normal;\n\n\t\tif ( normal !== undefined ) {\n\n\t\t\tconst normalMatrix = new Matrix3().getNormalMatrix( matrix );\n\n\t\t\tnormal.applyNormalMatrix( normalMatrix );\n\n\t\t\tnormal.needsUpdate = true;\n\n\t\t}\n\n\t\tconst tangent = this.attributes.tangent;\n\n\t\tif ( tangent !== undefined ) {\n\n\t\t\ttangent.transformDirection( matrix );\n\n\t\t\ttangent.needsUpdate = true;\n\n\t\t}\n\n\t\tif ( this.boundingBox !== null ) {\n\n\t\t\tthis.computeBoundingBox();\n\n\t\t}\n\n\t\tif ( this.boundingSphere !== null ) {\n\n\t\t\tthis.computeBoundingSphere();\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\trotateX: function ( angle ) {\n\n\t\t// rotate geometry around world x-axis\n\n\t\t_m1$2.makeRotationX( angle );\n\n\t\tthis.applyMatrix4( _m1$2 );\n\n\t\treturn this;\n\n\t},\n\n\trotateY: function ( angle ) {\n\n\t\t// rotate geometry around world y-axis\n\n\t\t_m1$2.makeRotationY( angle );\n\n\t\tthis.applyMatrix4( _m1$2 );\n\n\t\treturn this;\n\n\t},\n\n\trotateZ: function ( angle ) {\n\n\t\t// rotate geometry around world z-axis\n\n\t\t_m1$2.makeRotationZ( angle );\n\n\t\tthis.applyMatrix4( _m1$2 );\n\n\t\treturn this;\n\n\t},\n\n\ttranslate: function ( x, y, z ) {\n\n\t\t// translate geometry\n\n\t\t_m1$2.makeTranslation( x, y, z );\n\n\t\tthis.applyMatrix4( _m1$2 );\n\n\t\treturn this;\n\n\t},\n\n\tscale: function ( x, y, z ) {\n\n\t\t// scale geometry\n\n\t\t_m1$2.makeScale( x, y, z );\n\n\t\tthis.applyMatrix4( _m1$2 );\n\n\t\treturn this;\n\n\t},\n\n\tlookAt: function ( vector ) {\n\n\t\t_obj.lookAt( vector );\n\n\t\t_obj.updateMatrix();\n\n\t\tthis.applyMatrix4( _obj.matrix );\n\n\t\treturn this;\n\n\t},\n\n\tcenter: function () {\n\n\t\tthis.computeBoundingBox();\n\n\t\tthis.boundingBox.getCenter( _offset ).negate();\n\n\t\tthis.translate( _offset.x, _offset.y, _offset.z );\n\n\t\treturn this;\n\n\t},\n\n\tsetFromObject: function ( object ) {\n\n\t\t// console.log( 'THREE.BufferGeometry.setFromObject(). Converting', object, this );\n\n\t\tconst geometry = object.geometry;\n\n\t\tif ( object.isPoints || object.isLine ) {\n\n\t\t\tconst positions = new Float32BufferAttribute( geometry.vertices.length * 3, 3 );\n\t\t\tconst colors = new Float32BufferAttribute( geometry.colors.length * 3, 3 );\n\n\t\t\tthis.setAttribute( 'position', positions.copyVector3sArray( geometry.vertices ) );\n\t\t\tthis.setAttribute( 'color', colors.copyColorsArray( geometry.colors ) );\n\n\t\t\tif ( geometry.lineDistances && geometry.lineDistances.length === geometry.vertices.length ) {\n\n\t\t\t\tconst lineDistances = new Float32BufferAttribute( geometry.lineDistances.length, 1 );\n\n\t\t\t\tthis.setAttribute( 'lineDistance', lineDistances.copyArray( geometry.lineDistances ) );\n\n\t\t\t}\n\n\t\t\tif ( geometry.boundingSphere !== null ) {\n\n\t\t\t\tthis.boundingSphere = geometry.boundingSphere.clone();\n\n\t\t\t}\n\n\t\t\tif ( geometry.boundingBox !== null ) {\n\n\t\t\t\tthis.boundingBox = geometry.boundingBox.clone();\n\n\t\t\t}\n\n\t\t} else if ( object.isMesh ) {\n\n\t\t\tif ( geometry && geometry.isGeometry ) {\n\n\t\t\t\tthis.fromGeometry( geometry );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tsetFromPoints: function ( points ) {\n\n\t\tconst position = [];\n\n\t\tfor ( let i = 0, l = points.length; i < l; i ++ ) {\n\n\t\t\tconst point = points[ i ];\n\t\t\tposition.push( point.x, point.y, point.z || 0 );\n\n\t\t}\n\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( position, 3 ) );\n\n\t\treturn this;\n\n\t},\n\n\tupdateFromObject: function ( object ) {\n\n\t\tlet geometry = object.geometry;\n\n\t\tif ( object.isMesh ) {\n\n\t\t\tlet direct = geometry.__directGeometry;\n\n\t\t\tif ( geometry.elementsNeedUpdate === true ) {\n\n\t\t\t\tdirect = undefined;\n\t\t\t\tgeometry.elementsNeedUpdate = false;\n\n\t\t\t}\n\n\t\t\tif ( direct === undefined ) {\n\n\t\t\t\treturn this.fromGeometry( geometry );\n\n\t\t\t}\n\n\t\t\tdirect.verticesNeedUpdate = geometry.verticesNeedUpdate;\n\t\t\tdirect.normalsNeedUpdate = geometry.normalsNeedUpdate;\n\t\t\tdirect.colorsNeedUpdate = geometry.colorsNeedUpdate;\n\t\t\tdirect.uvsNeedUpdate = geometry.uvsNeedUpdate;\n\t\t\tdirect.groupsNeedUpdate = geometry.groupsNeedUpdate;\n\n\t\t\tgeometry.verticesNeedUpdate = false;\n\t\t\tgeometry.normalsNeedUpdate = false;\n\t\t\tgeometry.colorsNeedUpdate = false;\n\t\t\tgeometry.uvsNeedUpdate = false;\n\t\t\tgeometry.groupsNeedUpdate = false;\n\n\t\t\tgeometry = direct;\n\n\t\t}\n\n\t\tif ( geometry.verticesNeedUpdate === true ) {\n\n\t\t\tconst attribute = this.attributes.position;\n\n\t\t\tif ( attribute !== undefined ) {\n\n\t\t\t\tattribute.copyVector3sArray( geometry.vertices );\n\t\t\t\tattribute.needsUpdate = true;\n\n\t\t\t}\n\n\t\t\tgeometry.verticesNeedUpdate = false;\n\n\t\t}\n\n\t\tif ( geometry.normalsNeedUpdate === true ) {\n\n\t\t\tconst attribute = this.attributes.normal;\n\n\t\t\tif ( attribute !== undefined ) {\n\n\t\t\t\tattribute.copyVector3sArray( geometry.normals );\n\t\t\t\tattribute.needsUpdate = true;\n\n\t\t\t}\n\n\t\t\tgeometry.normalsNeedUpdate = false;\n\n\t\t}\n\n\t\tif ( geometry.colorsNeedUpdate === true ) {\n\n\t\t\tconst attribute = this.attributes.color;\n\n\t\t\tif ( attribute !== undefined ) {\n\n\t\t\t\tattribute.copyColorsArray( geometry.colors );\n\t\t\t\tattribute.needsUpdate = true;\n\n\t\t\t}\n\n\t\t\tgeometry.colorsNeedUpdate = false;\n\n\t\t}\n\n\t\tif ( geometry.uvsNeedUpdate ) {\n\n\t\t\tconst attribute = this.attributes.uv;\n\n\t\t\tif ( attribute !== undefined ) {\n\n\t\t\t\tattribute.copyVector2sArray( geometry.uvs );\n\t\t\t\tattribute.needsUpdate = true;\n\n\t\t\t}\n\n\t\t\tgeometry.uvsNeedUpdate = false;\n\n\t\t}\n\n\t\tif ( geometry.lineDistancesNeedUpdate ) {\n\n\t\t\tconst attribute = this.attributes.lineDistance;\n\n\t\t\tif ( attribute !== undefined ) {\n\n\t\t\t\tattribute.copyArray( geometry.lineDistances );\n\t\t\t\tattribute.needsUpdate = true;\n\n\t\t\t}\n\n\t\t\tgeometry.lineDistancesNeedUpdate = false;\n\n\t\t}\n\n\t\tif ( geometry.groupsNeedUpdate ) {\n\n\t\t\tgeometry.computeGroups( object.geometry );\n\t\t\tthis.groups = geometry.groups;\n\n\t\t\tgeometry.groupsNeedUpdate = false;\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tfromGeometry: function ( geometry ) {\n\n\t\tgeometry.__directGeometry = new DirectGeometry().fromGeometry( geometry );\n\n\t\treturn this.fromDirectGeometry( geometry.__directGeometry );\n\n\t},\n\n\tfromDirectGeometry: function ( geometry ) {\n\n\t\tconst positions = new Float32Array( geometry.vertices.length * 3 );\n\t\tthis.setAttribute( 'position', new BufferAttribute( positions, 3 ).copyVector3sArray( geometry.vertices ) );\n\n\t\tif ( geometry.normals.length > 0 ) {\n\n\t\t\tconst normals = new Float32Array( geometry.normals.length * 3 );\n\t\t\tthis.setAttribute( 'normal', new BufferAttribute( normals, 3 ).copyVector3sArray( geometry.normals ) );\n\n\t\t}\n\n\t\tif ( geometry.colors.length > 0 ) {\n\n\t\t\tconst colors = new Float32Array( geometry.colors.length * 3 );\n\t\t\tthis.setAttribute( 'color', new BufferAttribute( colors, 3 ).copyColorsArray( geometry.colors ) );\n\n\t\t}\n\n\t\tif ( geometry.uvs.length > 0 ) {\n\n\t\t\tconst uvs = new Float32Array( geometry.uvs.length * 2 );\n\t\t\tthis.setAttribute( 'uv', new BufferAttribute( uvs, 2 ).copyVector2sArray( geometry.uvs ) );\n\n\t\t}\n\n\t\tif ( geometry.uvs2.length > 0 ) {\n\n\t\t\tconst uvs2 = new Float32Array( geometry.uvs2.length * 2 );\n\t\t\tthis.setAttribute( 'uv2', new BufferAttribute( uvs2, 2 ).copyVector2sArray( geometry.uvs2 ) );\n\n\t\t}\n\n\t\t// groups\n\n\t\tthis.groups = geometry.groups;\n\n\t\t// morphs\n\n\t\tfor ( const name in geometry.morphTargets ) {\n\n\t\t\tconst array = [];\n\t\t\tconst morphTargets = geometry.morphTargets[ name ];\n\n\t\t\tfor ( let i = 0, l = morphTargets.length; i < l; i ++ ) {\n\n\t\t\t\tconst morphTarget = morphTargets[ i ];\n\n\t\t\t\tconst attribute = new Float32BufferAttribute( morphTarget.data.length * 3, 3 );\n\t\t\t\tattribute.name = morphTarget.name;\n\n\t\t\t\tarray.push( attribute.copyVector3sArray( morphTarget.data ) );\n\n\t\t\t}\n\n\t\t\tthis.morphAttributes[ name ] = array;\n\n\t\t}\n\n\t\t// skinning\n\n\t\tif ( geometry.skinIndices.length > 0 ) {\n\n\t\t\tconst skinIndices = new Float32BufferAttribute( geometry.skinIndices.length * 4, 4 );\n\t\t\tthis.setAttribute( 'skinIndex', skinIndices.copyVector4sArray( geometry.skinIndices ) );\n\n\t\t}\n\n\t\tif ( geometry.skinWeights.length > 0 ) {\n\n\t\t\tconst skinWeights = new Float32BufferAttribute( geometry.skinWeights.length * 4, 4 );\n\t\t\tthis.setAttribute( 'skinWeight', skinWeights.copyVector4sArray( geometry.skinWeights ) );\n\n\t\t}\n\n\t\t//\n\n\t\tif ( geometry.boundingSphere !== null ) {\n\n\t\t\tthis.boundingSphere = geometry.boundingSphere.clone();\n\n\t\t}\n\n\t\tif ( geometry.boundingBox !== null ) {\n\n\t\t\tthis.boundingBox = geometry.boundingBox.clone();\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tcomputeBoundingBox: function () {\n\n\t\tif ( this.boundingBox === null ) {\n\n\t\t\tthis.boundingBox = new Box3();\n\n\t\t}\n\n\t\tconst position = this.attributes.position;\n\t\tconst morphAttributesPosition = this.morphAttributes.position;\n\n\t\tif ( position && position.isGLBufferAttribute ) {\n\n\t\t\tconsole.error( 'THREE.BufferGeometry.computeBoundingBox(): GLBufferAttribute requires a manual bounding box. Alternatively set \"mesh.frustumCulled\" to \"false\".', this );\n\n\t\t\tthis.boundingBox.set(\n\t\t\t\tnew Vector3( - Infinity, - Infinity, - Infinity ),\n\t\t\t\tnew Vector3( + Infinity, + Infinity, + Infinity )\n\t\t\t);\n\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( position !== undefined ) {\n\n\t\t\tthis.boundingBox.setFromBufferAttribute( position );\n\n\t\t\t// process morph attributes if present\n\n\t\t\tif ( morphAttributesPosition ) {\n\n\t\t\t\tfor ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst morphAttribute = morphAttributesPosition[ i ];\n\t\t\t\t\t_box$2.setFromBufferAttribute( morphAttribute );\n\n\t\t\t\t\tif ( this.morphTargetsRelative ) {\n\n\t\t\t\t\t\t_vector$4.addVectors( this.boundingBox.min, _box$2.min );\n\t\t\t\t\t\tthis.boundingBox.expandByPoint( _vector$4 );\n\n\t\t\t\t\t\t_vector$4.addVectors( this.boundingBox.max, _box$2.max );\n\t\t\t\t\t\tthis.boundingBox.expandByPoint( _vector$4 );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tthis.boundingBox.expandByPoint( _box$2.min );\n\t\t\t\t\t\tthis.boundingBox.expandByPoint( _box$2.max );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tthis.boundingBox.makeEmpty();\n\n\t\t}\n\n\t\tif ( isNaN( this.boundingBox.min.x ) || isNaN( this.boundingBox.min.y ) || isNaN( this.boundingBox.min.z ) ) {\n\n\t\t\tconsole.error( 'THREE.BufferGeometry.computeBoundingBox(): Computed min/max have NaN values. The \"position\" attribute is likely to have NaN values.', this );\n\n\t\t}\n\n\t},\n\n\tcomputeBoundingSphere: function () {\n\n\t\tif ( this.boundingSphere === null ) {\n\n\t\t\tthis.boundingSphere = new Sphere();\n\n\t\t}\n\n\t\tconst position = this.attributes.position;\n\t\tconst morphAttributesPosition = this.morphAttributes.position;\n\n\t\tif ( position && position.isGLBufferAttribute ) {\n\n\t\t\tconsole.error( 'THREE.BufferGeometry.computeBoundingSphere(): GLBufferAttribute requires a manual bounding sphere. Alternatively set \"mesh.frustumCulled\" to \"false\".', this );\n\n\t\t\tthis.boundingSphere.set( new Vector3(), Infinity );\n\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( position ) {\n\n\t\t\t// first, find the center of the bounding sphere\n\n\t\t\tconst center = this.boundingSphere.center;\n\n\t\t\t_box$2.setFromBufferAttribute( position );\n\n\t\t\t// process morph attributes if present\n\n\t\t\tif ( morphAttributesPosition ) {\n\n\t\t\t\tfor ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst morphAttribute = morphAttributesPosition[ i ];\n\t\t\t\t\t_boxMorphTargets.setFromBufferAttribute( morphAttribute );\n\n\t\t\t\t\tif ( this.morphTargetsRelative ) {\n\n\t\t\t\t\t\t_vector$4.addVectors( _box$2.min, _boxMorphTargets.min );\n\t\t\t\t\t\t_box$2.expandByPoint( _vector$4 );\n\n\t\t\t\t\t\t_vector$4.addVectors( _box$2.max, _boxMorphTargets.max );\n\t\t\t\t\t\t_box$2.expandByPoint( _vector$4 );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\t_box$2.expandByPoint( _boxMorphTargets.min );\n\t\t\t\t\t\t_box$2.expandByPoint( _boxMorphTargets.max );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t_box$2.getCenter( center );\n\n\t\t\t// second, try to find a boundingSphere with a radius smaller than the\n\t\t\t// boundingSphere of the boundingBox: sqrt(3) smaller in the best case\n\n\t\t\tlet maxRadiusSq = 0;\n\n\t\t\tfor ( let i = 0, il = position.count; i < il; i ++ ) {\n\n\t\t\t\t_vector$4.fromBufferAttribute( position, i );\n\n\t\t\t\tmaxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( _vector$4 ) );\n\n\t\t\t}\n\n\t\t\t// process morph attributes if present\n\n\t\t\tif ( morphAttributesPosition ) {\n\n\t\t\t\tfor ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst morphAttribute = morphAttributesPosition[ i ];\n\t\t\t\t\tconst morphTargetsRelative = this.morphTargetsRelative;\n\n\t\t\t\t\tfor ( let j = 0, jl = morphAttribute.count; j < jl; j ++ ) {\n\n\t\t\t\t\t\t_vector$4.fromBufferAttribute( morphAttribute, j );\n\n\t\t\t\t\t\tif ( morphTargetsRelative ) {\n\n\t\t\t\t\t\t\t_offset.fromBufferAttribute( position, j );\n\t\t\t\t\t\t\t_vector$4.add( _offset );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tmaxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( _vector$4 ) );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tthis.boundingSphere.radius = Math.sqrt( maxRadiusSq );\n\n\t\t\tif ( isNaN( this.boundingSphere.radius ) ) {\n\n\t\t\t\tconsole.error( 'THREE.BufferGeometry.computeBoundingSphere(): Computed radius is NaN. The \"position\" attribute is likely to have NaN values.', this );\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\tcomputeFaceNormals: function () {\n\n\t\t// backwards compatibility\n\n\t},\n\n\tcomputeVertexNormals: function () {\n\n\t\tconst index = this.index;\n\t\tconst positionAttribute = this.getAttribute( 'position' );\n\n\t\tif ( positionAttribute !== undefined ) {\n\n\t\t\tlet normalAttribute = this.getAttribute( 'normal' );\n\n\t\t\tif ( normalAttribute === undefined ) {\n\n\t\t\t\tnormalAttribute = new BufferAttribute( new Float32Array( positionAttribute.count * 3 ), 3 );\n\t\t\t\tthis.setAttribute( 'normal', normalAttribute );\n\n\t\t\t} else {\n\n\t\t\t\t// reset existing normals to zero\n\n\t\t\t\tfor ( let i = 0, il = normalAttribute.count; i < il; i ++ ) {\n\n\t\t\t\t\tnormalAttribute.setXYZ( i, 0, 0, 0 );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tconst pA = new Vector3(), pB = new Vector3(), pC = new Vector3();\n\t\t\tconst nA = new Vector3(), nB = new Vector3(), nC = new Vector3();\n\t\t\tconst cb = new Vector3(), ab = new Vector3();\n\n\t\t\t// indexed elements\n\n\t\t\tif ( index ) {\n\n\t\t\t\tfor ( let i = 0, il = index.count; i < il; i += 3 ) {\n\n\t\t\t\t\tconst vA = index.getX( i + 0 );\n\t\t\t\t\tconst vB = index.getX( i + 1 );\n\t\t\t\t\tconst vC = index.getX( i + 2 );\n\n\t\t\t\t\tpA.fromBufferAttribute( positionAttribute, vA );\n\t\t\t\t\tpB.fromBufferAttribute( positionAttribute, vB );\n\t\t\t\t\tpC.fromBufferAttribute( positionAttribute, vC );\n\n\t\t\t\t\tcb.subVectors( pC, pB );\n\t\t\t\t\tab.subVectors( pA, pB );\n\t\t\t\t\tcb.cross( ab );\n\n\t\t\t\t\tnA.fromBufferAttribute( normalAttribute, vA );\n\t\t\t\t\tnB.fromBufferAttribute( normalAttribute, vB );\n\t\t\t\t\tnC.fromBufferAttribute( normalAttribute, vC );\n\n\t\t\t\t\tnA.add( cb );\n\t\t\t\t\tnB.add( cb );\n\t\t\t\t\tnC.add( cb );\n\n\t\t\t\t\tnormalAttribute.setXYZ( vA, nA.x, nA.y, nA.z );\n\t\t\t\t\tnormalAttribute.setXYZ( vB, nB.x, nB.y, nB.z );\n\t\t\t\t\tnormalAttribute.setXYZ( vC, nC.x, nC.y, nC.z );\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\t// non-indexed elements (unconnected triangle soup)\n\n\t\t\t\tfor ( let i = 0, il = positionAttribute.count; i < il; i += 3 ) {\n\n\t\t\t\t\tpA.fromBufferAttribute( positionAttribute, i + 0 );\n\t\t\t\t\tpB.fromBufferAttribute( positionAttribute, i + 1 );\n\t\t\t\t\tpC.fromBufferAttribute( positionAttribute, i + 2 );\n\n\t\t\t\t\tcb.subVectors( pC, pB );\n\t\t\t\t\tab.subVectors( pA, pB );\n\t\t\t\t\tcb.cross( ab );\n\n\t\t\t\t\tnormalAttribute.setXYZ( i + 0, cb.x, cb.y, cb.z );\n\t\t\t\t\tnormalAttribute.setXYZ( i + 1, cb.x, cb.y, cb.z );\n\t\t\t\t\tnormalAttribute.setXYZ( i + 2, cb.x, cb.y, cb.z );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tthis.normalizeNormals();\n\n\t\t\tnormalAttribute.needsUpdate = true;\n\n\t\t}\n\n\t},\n\n\tmerge: function ( geometry, offset ) {\n\n\t\tif ( ! ( geometry && geometry.isBufferGeometry ) ) {\n\n\t\t\tconsole.error( 'THREE.BufferGeometry.merge(): geometry not an instance of THREE.BufferGeometry.', geometry );\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( offset === undefined ) {\n\n\t\t\toffset = 0;\n\n\t\t\tconsole.warn(\n\t\t\t\t'THREE.BufferGeometry.merge(): Overwriting original geometry, starting at offset=0. '\n\t\t\t\t+ 'Use BufferGeometryUtils.mergeBufferGeometries() for lossless merge.'\n\t\t\t);\n\n\t\t}\n\n\t\tconst attributes = this.attributes;\n\n\t\tfor ( const key in attributes ) {\n\n\t\t\tif ( geometry.attributes[ key ] === undefined ) continue;\n\n\t\t\tconst attribute1 = attributes[ key ];\n\t\t\tconst attributeArray1 = attribute1.array;\n\n\t\t\tconst attribute2 = geometry.attributes[ key ];\n\t\t\tconst attributeArray2 = attribute2.array;\n\n\t\t\tconst attributeOffset = attribute2.itemSize * offset;\n\t\t\tconst length = Math.min( attributeArray2.length, attributeArray1.length - attributeOffset );\n\n\t\t\tfor ( let i = 0, j = attributeOffset; i < length; i ++, j ++ ) {\n\n\t\t\t\tattributeArray1[ j ] = attributeArray2[ i ];\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tnormalizeNormals: function () {\n\n\t\tconst normals = this.attributes.normal;\n\n\t\tfor ( let i = 0, il = normals.count; i < il; i ++ ) {\n\n\t\t\t_vector$4.fromBufferAttribute( normals, i );\n\n\t\t\t_vector$4.normalize();\n\n\t\t\tnormals.setXYZ( i, _vector$4.x, _vector$4.y, _vector$4.z );\n\n\t\t}\n\n\t},\n\n\ttoNonIndexed: function () {\n\n\t\tfunction convertBufferAttribute( attribute, indices ) {\n\n\t\t\tconst array = attribute.array;\n\t\t\tconst itemSize = attribute.itemSize;\n\t\t\tconst normalized = attribute.normalized;\n\n\t\t\tconst array2 = new array.constructor( indices.length * itemSize );\n\n\t\t\tlet index = 0, index2 = 0;\n\n\t\t\tfor ( let i = 0, l = indices.length; i < l; i ++ ) {\n\n\t\t\t\tindex = indices[ i ] * itemSize;\n\n\t\t\t\tfor ( let j = 0; j < itemSize; j ++ ) {\n\n\t\t\t\t\tarray2[ index2 ++ ] = array[ index ++ ];\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\treturn new BufferAttribute( array2, itemSize, normalized );\n\n\t\t}\n\n\t\t//\n\n\t\tif ( this.index === null ) {\n\n\t\t\tconsole.warn( 'THREE.BufferGeometry.toNonIndexed(): Geometry is already non-indexed.' );\n\t\t\treturn this;\n\n\t\t}\n\n\t\tconst geometry2 = new BufferGeometry();\n\n\t\tconst indices = this.index.array;\n\t\tconst attributes = this.attributes;\n\n\t\t// attributes\n\n\t\tfor ( const name in attributes ) {\n\n\t\t\tconst attribute = attributes[ name ];\n\n\t\t\tconst newAttribute = convertBufferAttribute( attribute, indices );\n\n\t\t\tgeometry2.setAttribute( name, newAttribute );\n\n\t\t}\n\n\t\t// morph attributes\n\n\t\tconst morphAttributes = this.morphAttributes;\n\n\t\tfor ( const name in morphAttributes ) {\n\n\t\t\tconst morphArray = [];\n\t\t\tconst morphAttribute = morphAttributes[ name ]; // morphAttribute: array of Float32BufferAttributes\n\n\t\t\tfor ( let i = 0, il = morphAttribute.length; i < il; i ++ ) {\n\n\t\t\t\tconst attribute = morphAttribute[ i ];\n\n\t\t\t\tconst newAttribute = convertBufferAttribute( attribute, indices );\n\n\t\t\t\tmorphArray.push( newAttribute );\n\n\t\t\t}\n\n\t\t\tgeometry2.morphAttributes[ name ] = morphArray;\n\n\t\t}\n\n\t\tgeometry2.morphTargetsRelative = this.morphTargetsRelative;\n\n\t\t// groups\n\n\t\tconst groups = this.groups;\n\n\t\tfor ( let i = 0, l = groups.length; i < l; i ++ ) {\n\n\t\t\tconst group = groups[ i ];\n\t\t\tgeometry2.addGroup( group.start, group.count, group.materialIndex );\n\n\t\t}\n\n\t\treturn geometry2;\n\n\t},\n\n\ttoJSON: function () {\n\n\t\tconst data = {\n\t\t\tmetadata: {\n\t\t\t\tversion: 4.5,\n\t\t\t\ttype: 'BufferGeometry',\n\t\t\t\tgenerator: 'BufferGeometry.toJSON'\n\t\t\t}\n\t\t};\n\n\t\t// standard BufferGeometry serialization\n\n\t\tdata.uuid = this.uuid;\n\t\tdata.type = this.type;\n\t\tif ( this.name !== '' ) data.name = this.name;\n\t\tif ( Object.keys( this.userData ).length > 0 ) data.userData = this.userData;\n\n\t\tif ( this.parameters !== undefined ) {\n\n\t\t\tconst parameters = this.parameters;\n\n\t\t\tfor ( const key in parameters ) {\n\n\t\t\t\tif ( parameters[ key ] !== undefined ) data[ key ] = parameters[ key ];\n\n\t\t\t}\n\n\t\t\treturn data;\n\n\t\t}\n\n\t\tdata.data = { attributes: {} };\n\n\t\tconst index = this.index;\n\n\t\tif ( index !== null ) {\n\n\t\t\tdata.data.index = {\n\t\t\t\ttype: index.array.constructor.name,\n\t\t\t\tarray: Array.prototype.slice.call( index.array )\n\t\t\t};\n\n\t\t}\n\n\t\tconst attributes = this.attributes;\n\n\t\tfor ( const key in attributes ) {\n\n\t\t\tconst attribute = attributes[ key ];\n\n\t\t\tconst attributeData = attribute.toJSON( data.data );\n\n\t\t\tif ( attribute.name !== '' ) attributeData.name = attribute.name;\n\n\t\t\tdata.data.attributes[ key ] = attributeData;\n\n\t\t}\n\n\t\tconst morphAttributes = {};\n\t\tlet hasMorphAttributes = false;\n\n\t\tfor ( const key in this.morphAttributes ) {\n\n\t\t\tconst attributeArray = this.morphAttributes[ key ];\n\n\t\t\tconst array = [];\n\n\t\t\tfor ( let i = 0, il = attributeArray.length; i < il; i ++ ) {\n\n\t\t\t\tconst attribute = attributeArray[ i ];\n\n\t\t\t\tconst attributeData = attribute.toJSON( data.data );\n\n\t\t\t\tif ( attribute.name !== '' ) attributeData.name = attribute.name;\n\n\t\t\t\tarray.push( attributeData );\n\n\t\t\t}\n\n\t\t\tif ( array.length > 0 ) {\n\n\t\t\t\tmorphAttributes[ key ] = array;\n\n\t\t\t\thasMorphAttributes = true;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( hasMorphAttributes ) {\n\n\t\t\tdata.data.morphAttributes = morphAttributes;\n\t\t\tdata.data.morphTargetsRelative = this.morphTargetsRelative;\n\n\t\t}\n\n\t\tconst groups = this.groups;\n\n\t\tif ( groups.length > 0 ) {\n\n\t\t\tdata.data.groups = JSON.parse( JSON.stringify( groups ) );\n\n\t\t}\n\n\t\tconst boundingSphere = this.boundingSphere;\n\n\t\tif ( boundingSphere !== null ) {\n\n\t\t\tdata.data.boundingSphere = {\n\t\t\t\tcenter: boundingSphere.center.toArray(),\n\t\t\t\tradius: boundingSphere.radius\n\t\t\t};\n\n\t\t}\n\n\t\treturn data;\n\n\t},\n\n\tclone: function () {\n\n\t\t/*\n\t\t // Handle primitives\n\n\t\t const parameters = this.parameters;\n\n\t\t if ( parameters !== undefined ) {\n\n\t\t const values = [];\n\n\t\t for ( const key in parameters ) {\n\n\t\t values.push( parameters[ key ] );\n\n\t\t }\n\n\t\t const geometry = Object.create( this.constructor.prototype );\n\t\t this.constructor.apply( geometry, values );\n\t\t return geometry;\n\n\t\t }\n\n\t\t return new this.constructor().copy( this );\n\t\t */\n\n\t\treturn new BufferGeometry().copy( this );\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\t// reset\n\n\t\tthis.index = null;\n\t\tthis.attributes = {};\n\t\tthis.morphAttributes = {};\n\t\tthis.groups = [];\n\t\tthis.boundingBox = null;\n\t\tthis.boundingSphere = null;\n\n\t\t// used for storing cloned, shared data\n\n\t\tconst data = {};\n\n\t\t// name\n\n\t\tthis.name = source.name;\n\n\t\t// index\n\n\t\tconst index = source.index;\n\n\t\tif ( index !== null ) {\n\n\t\t\tthis.setIndex( index.clone( data ) );\n\n\t\t}\n\n\t\t// attributes\n\n\t\tconst attributes = source.attributes;\n\n\t\tfor ( const name in attributes ) {\n\n\t\t\tconst attribute = attributes[ name ];\n\t\t\tthis.setAttribute( name, attribute.clone( data ) );\n\n\t\t}\n\n\t\t// morph attributes\n\n\t\tconst morphAttributes = source.morphAttributes;\n\n\t\tfor ( const name in morphAttributes ) {\n\n\t\t\tconst array = [];\n\t\t\tconst morphAttribute = morphAttributes[ name ]; // morphAttribute: array of Float32BufferAttributes\n\n\t\t\tfor ( let i = 0, l = morphAttribute.length; i < l; i ++ ) {\n\n\t\t\t\tarray.push( morphAttribute[ i ].clone( data ) );\n\n\t\t\t}\n\n\t\t\tthis.morphAttributes[ name ] = array;\n\n\t\t}\n\n\t\tthis.morphTargetsRelative = source.morphTargetsRelative;\n\n\t\t// groups\n\n\t\tconst groups = source.groups;\n\n\t\tfor ( let i = 0, l = groups.length; i < l; i ++ ) {\n\n\t\t\tconst group = groups[ i ];\n\t\t\tthis.addGroup( group.start, group.count, group.materialIndex );\n\n\t\t}\n\n\t\t// bounding box\n\n\t\tconst boundingBox = source.boundingBox;\n\n\t\tif ( boundingBox !== null ) {\n\n\t\t\tthis.boundingBox = boundingBox.clone();\n\n\t\t}\n\n\t\t// bounding sphere\n\n\t\tconst boundingSphere = source.boundingSphere;\n\n\t\tif ( boundingSphere !== null ) {\n\n\t\t\tthis.boundingSphere = boundingSphere.clone();\n\n\t\t}\n\n\t\t// draw range\n\n\t\tthis.drawRange.start = source.drawRange.start;\n\t\tthis.drawRange.count = source.drawRange.count;\n\n\t\t// user data\n\n\t\tthis.userData = source.userData;\n\n\t\treturn this;\n\n\t},\n\n\tdispose: function () {\n\n\t\tthis.dispatchEvent( { type: 'dispose' } );\n\n\t}\n\n} );\n\nconst _inverseMatrix = new Matrix4();\nconst _ray = new Ray();\nconst _sphere = new Sphere();\n\nconst _vA = new Vector3();\nconst _vB = new Vector3();\nconst _vC = new Vector3();\n\nconst _tempA = new Vector3();\nconst _tempB = new Vector3();\nconst _tempC = new Vector3();\n\nconst _morphA = new Vector3();\nconst _morphB = new Vector3();\nconst _morphC = new Vector3();\n\nconst _uvA = new Vector2();\nconst _uvB = new Vector2();\nconst _uvC = new Vector2();\n\nconst _intersectionPoint = new Vector3();\nconst _intersectionPointWorld = new Vector3();\n\nfunction Mesh( geometry = new BufferGeometry(), material = new MeshBasicMaterial() ) {\n\n\tObject3D.call( this );\n\n\tthis.type = 'Mesh';\n\n\tthis.geometry = geometry;\n\tthis.material = material;\n\n\tthis.updateMorphTargets();\n\n}\n\nMesh.prototype = Object.assign( Object.create( Object3D.prototype ), {\n\n\tconstructor: Mesh,\n\n\tisMesh: true,\n\n\tcopy: function ( source ) {\n\n\t\tObject3D.prototype.copy.call( this, source );\n\n\t\tif ( source.morphTargetInfluences !== undefined ) {\n\n\t\t\tthis.morphTargetInfluences = source.morphTargetInfluences.slice();\n\n\t\t}\n\n\t\tif ( source.morphTargetDictionary !== undefined ) {\n\n\t\t\tthis.morphTargetDictionary = Object.assign( {}, source.morphTargetDictionary );\n\n\t\t}\n\n\t\tthis.material = source.material;\n\t\tthis.geometry = source.geometry;\n\n\t\treturn this;\n\n\t},\n\n\tupdateMorphTargets: function () {\n\n\t\tconst geometry = this.geometry;\n\n\t\tif ( geometry.isBufferGeometry ) {\n\n\t\t\tconst morphAttributes = geometry.morphAttributes;\n\t\t\tconst keys = Object.keys( morphAttributes );\n\n\t\t\tif ( keys.length > 0 ) {\n\n\t\t\t\tconst morphAttribute = morphAttributes[ keys[ 0 ] ];\n\n\t\t\t\tif ( morphAttribute !== undefined ) {\n\n\t\t\t\t\tthis.morphTargetInfluences = [];\n\t\t\t\t\tthis.morphTargetDictionary = {};\n\n\t\t\t\t\tfor ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {\n\n\t\t\t\t\t\tconst name = morphAttribute[ m ].name || String( m );\n\n\t\t\t\t\t\tthis.morphTargetInfluences.push( 0 );\n\t\t\t\t\t\tthis.morphTargetDictionary[ name ] = m;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tconst morphTargets = geometry.morphTargets;\n\n\t\t\tif ( morphTargets !== undefined && morphTargets.length > 0 ) {\n\n\t\t\t\tconsole.error( 'THREE.Mesh.updateMorphTargets() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.' );\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\traycast: function ( raycaster, intersects ) {\n\n\t\tconst geometry = this.geometry;\n\t\tconst material = this.material;\n\t\tconst matrixWorld = this.matrixWorld;\n\n\t\tif ( material === undefined ) return;\n\n\t\t// Checking boundingSphere distance to ray\n\n\t\tif ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();\n\n\t\t_sphere.copy( geometry.boundingSphere );\n\t\t_sphere.applyMatrix4( matrixWorld );\n\n\t\tif ( raycaster.ray.intersectsSphere( _sphere ) === false ) return;\n\n\t\t//\n\n\t\t_inverseMatrix.copy( matrixWorld ).invert();\n\t\t_ray.copy( raycaster.ray ).applyMatrix4( _inverseMatrix );\n\n\t\t// Check boundingBox before continuing\n\n\t\tif ( geometry.boundingBox !== null ) {\n\n\t\t\tif ( _ray.intersectsBox( geometry.boundingBox ) === false ) return;\n\n\t\t}\n\n\t\tlet intersection;\n\n\t\tif ( geometry.isBufferGeometry ) {\n\n\t\t\tconst index = geometry.index;\n\t\t\tconst position = geometry.attributes.position;\n\t\t\tconst morphPosition = geometry.morphAttributes.position;\n\t\t\tconst morphTargetsRelative = geometry.morphTargetsRelative;\n\t\t\tconst uv = geometry.attributes.uv;\n\t\t\tconst uv2 = geometry.attributes.uv2;\n\t\t\tconst groups = geometry.groups;\n\t\t\tconst drawRange = geometry.drawRange;\n\n\t\t\tif ( index !== null ) {\n\n\t\t\t\t// indexed buffer geometry\n\n\t\t\t\tif ( Array.isArray( material ) ) {\n\n\t\t\t\t\tfor ( let i = 0, il = groups.length; i < il; i ++ ) {\n\n\t\t\t\t\t\tconst group = groups[ i ];\n\t\t\t\t\t\tconst groupMaterial = material[ group.materialIndex ];\n\n\t\t\t\t\t\tconst start = Math.max( group.start, drawRange.start );\n\t\t\t\t\t\tconst end = Math.min( ( group.start + group.count ), ( drawRange.start + drawRange.count ) );\n\n\t\t\t\t\t\tfor ( let j = start, jl = end; j < jl; j += 3 ) {\n\n\t\t\t\t\t\t\tconst a = index.getX( j );\n\t\t\t\t\t\t\tconst b = index.getX( j + 1 );\n\t\t\t\t\t\t\tconst c = index.getX( j + 2 );\n\n\t\t\t\t\t\t\tintersection = checkBufferGeometryIntersection( this, groupMaterial, raycaster, _ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c );\n\n\t\t\t\t\t\t\tif ( intersection ) {\n\n\t\t\t\t\t\t\t\tintersection.faceIndex = Math.floor( j / 3 ); // triangle number in indexed buffer semantics\n\t\t\t\t\t\t\t\tintersection.face.materialIndex = group.materialIndex;\n\t\t\t\t\t\t\t\tintersects.push( intersection );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconst start = Math.max( 0, drawRange.start );\n\t\t\t\t\tconst end = Math.min( index.count, ( drawRange.start + drawRange.count ) );\n\n\t\t\t\t\tfor ( let i = start, il = end; i < il; i += 3 ) {\n\n\t\t\t\t\t\tconst a = index.getX( i );\n\t\t\t\t\t\tconst b = index.getX( i + 1 );\n\t\t\t\t\t\tconst c = index.getX( i + 2 );\n\n\t\t\t\t\t\tintersection = checkBufferGeometryIntersection( this, material, raycaster, _ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c );\n\n\t\t\t\t\t\tif ( intersection ) {\n\n\t\t\t\t\t\t\tintersection.faceIndex = Math.floor( i / 3 ); // triangle number in indexed buffer semantics\n\t\t\t\t\t\t\tintersects.push( intersection );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t} else if ( position !== undefined ) {\n\n\t\t\t\t// non-indexed buffer geometry\n\n\t\t\t\tif ( Array.isArray( material ) ) {\n\n\t\t\t\t\tfor ( let i = 0, il = groups.length; i < il; i ++ ) {\n\n\t\t\t\t\t\tconst group = groups[ i ];\n\t\t\t\t\t\tconst groupMaterial = material[ group.materialIndex ];\n\n\t\t\t\t\t\tconst start = Math.max( group.start, drawRange.start );\n\t\t\t\t\t\tconst end = Math.min( ( group.start + group.count ), ( drawRange.start + drawRange.count ) );\n\n\t\t\t\t\t\tfor ( let j = start, jl = end; j < jl; j += 3 ) {\n\n\t\t\t\t\t\t\tconst a = j;\n\t\t\t\t\t\t\tconst b = j + 1;\n\t\t\t\t\t\t\tconst c = j + 2;\n\n\t\t\t\t\t\t\tintersection = checkBufferGeometryIntersection( this, groupMaterial, raycaster, _ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c );\n\n\t\t\t\t\t\t\tif ( intersection ) {\n\n\t\t\t\t\t\t\t\tintersection.faceIndex = Math.floor( j / 3 ); // triangle number in non-indexed buffer semantics\n\t\t\t\t\t\t\t\tintersection.face.materialIndex = group.materialIndex;\n\t\t\t\t\t\t\t\tintersects.push( intersection );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconst start = Math.max( 0, drawRange.start );\n\t\t\t\t\tconst end = Math.min( position.count, ( drawRange.start + drawRange.count ) );\n\n\t\t\t\t\tfor ( let i = start, il = end; i < il; i += 3 ) {\n\n\t\t\t\t\t\tconst a = i;\n\t\t\t\t\t\tconst b = i + 1;\n\t\t\t\t\t\tconst c = i + 2;\n\n\t\t\t\t\t\tintersection = checkBufferGeometryIntersection( this, material, raycaster, _ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c );\n\n\t\t\t\t\t\tif ( intersection ) {\n\n\t\t\t\t\t\t\tintersection.faceIndex = Math.floor( i / 3 ); // triangle number in non-indexed buffer semantics\n\t\t\t\t\t\t\tintersects.push( intersection );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else if ( geometry.isGeometry ) {\n\n\t\t\tconst isMultiMaterial = Array.isArray( material );\n\n\t\t\tconst vertices = geometry.vertices;\n\t\t\tconst faces = geometry.faces;\n\t\t\tlet uvs;\n\n\t\t\tconst faceVertexUvs = geometry.faceVertexUvs[ 0 ];\n\t\t\tif ( faceVertexUvs.length > 0 ) uvs = faceVertexUvs;\n\n\t\t\tfor ( let f = 0, fl = faces.length; f < fl; f ++ ) {\n\n\t\t\t\tconst face = faces[ f ];\n\t\t\t\tconst faceMaterial = isMultiMaterial ? material[ face.materialIndex ] : material;\n\n\t\t\t\tif ( faceMaterial === undefined ) continue;\n\n\t\t\t\tconst fvA = vertices[ face.a ];\n\t\t\t\tconst fvB = vertices[ face.b ];\n\t\t\t\tconst fvC = vertices[ face.c ];\n\n\t\t\t\tintersection = checkIntersection( this, faceMaterial, raycaster, _ray, fvA, fvB, fvC, _intersectionPoint );\n\n\t\t\t\tif ( intersection ) {\n\n\t\t\t\t\tif ( uvs && uvs[ f ] ) {\n\n\t\t\t\t\t\tconst uvs_f = uvs[ f ];\n\t\t\t\t\t\t_uvA.copy( uvs_f[ 0 ] );\n\t\t\t\t\t\t_uvB.copy( uvs_f[ 1 ] );\n\t\t\t\t\t\t_uvC.copy( uvs_f[ 2 ] );\n\n\t\t\t\t\t\tintersection.uv = Triangle.getUV( _intersectionPoint, fvA, fvB, fvC, _uvA, _uvB, _uvC, new Vector2() );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tintersection.face = face;\n\t\t\t\t\tintersection.faceIndex = f;\n\t\t\t\t\tintersects.push( intersection );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n} );\n\nfunction checkIntersection( object, material, raycaster, ray, pA, pB, pC, point ) {\n\n\tlet intersect;\n\n\tif ( material.side === BackSide ) {\n\n\t\tintersect = ray.intersectTriangle( pC, pB, pA, true, point );\n\n\t} else {\n\n\t\tintersect = ray.intersectTriangle( pA, pB, pC, material.side !== DoubleSide, point );\n\n\t}\n\n\tif ( intersect === null ) return null;\n\n\t_intersectionPointWorld.copy( point );\n\t_intersectionPointWorld.applyMatrix4( object.matrixWorld );\n\n\tconst distance = raycaster.ray.origin.distanceTo( _intersectionPointWorld );\n\n\tif ( distance < raycaster.near || distance > raycaster.far ) return null;\n\n\treturn {\n\t\tdistance: distance,\n\t\tpoint: _intersectionPointWorld.clone(),\n\t\tobject: object\n\t};\n\n}\n\nfunction checkBufferGeometryIntersection( object, material, raycaster, ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c ) {\n\n\t_vA.fromBufferAttribute( position, a );\n\t_vB.fromBufferAttribute( position, b );\n\t_vC.fromBufferAttribute( position, c );\n\n\tconst morphInfluences = object.morphTargetInfluences;\n\n\tif ( material.morphTargets && morphPosition && morphInfluences ) {\n\n\t\t_morphA.set( 0, 0, 0 );\n\t\t_morphB.set( 0, 0, 0 );\n\t\t_morphC.set( 0, 0, 0 );\n\n\t\tfor ( let i = 0, il = morphPosition.length; i < il; i ++ ) {\n\n\t\t\tconst influence = morphInfluences[ i ];\n\t\t\tconst morphAttribute = morphPosition[ i ];\n\n\t\t\tif ( influence === 0 ) continue;\n\n\t\t\t_tempA.fromBufferAttribute( morphAttribute, a );\n\t\t\t_tempB.fromBufferAttribute( morphAttribute, b );\n\t\t\t_tempC.fromBufferAttribute( morphAttribute, c );\n\n\t\t\tif ( morphTargetsRelative ) {\n\n\t\t\t\t_morphA.addScaledVector( _tempA, influence );\n\t\t\t\t_morphB.addScaledVector( _tempB, influence );\n\t\t\t\t_morphC.addScaledVector( _tempC, influence );\n\n\t\t\t} else {\n\n\t\t\t\t_morphA.addScaledVector( _tempA.sub( _vA ), influence );\n\t\t\t\t_morphB.addScaledVector( _tempB.sub( _vB ), influence );\n\t\t\t\t_morphC.addScaledVector( _tempC.sub( _vC ), influence );\n\n\t\t\t}\n\n\t\t}\n\n\t\t_vA.add( _morphA );\n\t\t_vB.add( _morphB );\n\t\t_vC.add( _morphC );\n\n\t}\n\n\tif ( object.isSkinnedMesh ) {\n\n\t\tobject.boneTransform( a, _vA );\n\t\tobject.boneTransform( b, _vB );\n\t\tobject.boneTransform( c, _vC );\n\n\t}\n\n\tconst intersection = checkIntersection( object, material, raycaster, ray, _vA, _vB, _vC, _intersectionPoint );\n\n\tif ( intersection ) {\n\n\t\tif ( uv ) {\n\n\t\t\t_uvA.fromBufferAttribute( uv, a );\n\t\t\t_uvB.fromBufferAttribute( uv, b );\n\t\t\t_uvC.fromBufferAttribute( uv, c );\n\n\t\t\tintersection.uv = Triangle.getUV( _intersectionPoint, _vA, _vB, _vC, _uvA, _uvB, _uvC, new Vector2() );\n\n\t\t}\n\n\t\tif ( uv2 ) {\n\n\t\t\t_uvA.fromBufferAttribute( uv2, a );\n\t\t\t_uvB.fromBufferAttribute( uv2, b );\n\t\t\t_uvC.fromBufferAttribute( uv2, c );\n\n\t\t\tintersection.uv2 = Triangle.getUV( _intersectionPoint, _vA, _vB, _vC, _uvA, _uvB, _uvC, new Vector2() );\n\n\t\t}\n\n\t\tconst face = new Face3( a, b, c );\n\t\tTriangle.getNormal( _vA, _vB, _vC, face.normal );\n\n\t\tintersection.face = face;\n\n\t}\n\n\treturn intersection;\n\n}\n\nclass BoxBufferGeometry extends BufferGeometry {\n\n\tconstructor( width = 1, height = 1, depth = 1, widthSegments = 1, heightSegments = 1, depthSegments = 1 ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'BoxBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\twidth: width,\n\t\t\theight: height,\n\t\t\tdepth: depth,\n\t\t\twidthSegments: widthSegments,\n\t\t\theightSegments: heightSegments,\n\t\t\tdepthSegments: depthSegments\n\t\t};\n\n\t\tconst scope = this;\n\n\t\t// segments\n\n\t\twidthSegments = Math.floor( widthSegments );\n\t\theightSegments = Math.floor( heightSegments );\n\t\tdepthSegments = Math.floor( depthSegments );\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\t// helper variables\n\n\t\tlet numberOfVertices = 0;\n\t\tlet groupStart = 0;\n\n\t\t// build each side of the box geometry\n\n\t\tbuildPlane( 'z', 'y', 'x', - 1, - 1, depth, height, width, depthSegments, heightSegments, 0 ); // px\n\t\tbuildPlane( 'z', 'y', 'x', 1, - 1, depth, height, - width, depthSegments, heightSegments, 1 ); // nx\n\t\tbuildPlane( 'x', 'z', 'y', 1, 1, width, depth, height, widthSegments, depthSegments, 2 ); // py\n\t\tbuildPlane( 'x', 'z', 'y', 1, - 1, width, depth, - height, widthSegments, depthSegments, 3 ); // ny\n\t\tbuildPlane( 'x', 'y', 'z', 1, - 1, width, height, depth, widthSegments, heightSegments, 4 ); // pz\n\t\tbuildPlane( 'x', 'y', 'z', - 1, - 1, width, height, - depth, widthSegments, heightSegments, 5 ); // nz\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t\tfunction buildPlane( u, v, w, udir, vdir, width, height, depth, gridX, gridY, materialIndex ) {\n\n\t\t\tconst segmentWidth = width / gridX;\n\t\t\tconst segmentHeight = height / gridY;\n\n\t\t\tconst widthHalf = width / 2;\n\t\t\tconst heightHalf = height / 2;\n\t\t\tconst depthHalf = depth / 2;\n\n\t\t\tconst gridX1 = gridX + 1;\n\t\t\tconst gridY1 = gridY + 1;\n\n\t\t\tlet vertexCounter = 0;\n\t\t\tlet groupCount = 0;\n\n\t\t\tconst vector = new Vector3();\n\n\t\t\t// generate vertices, normals and uvs\n\n\t\t\tfor ( let iy = 0; iy < gridY1; iy ++ ) {\n\n\t\t\t\tconst y = iy * segmentHeight - heightHalf;\n\n\t\t\t\tfor ( let ix = 0; ix < gridX1; ix ++ ) {\n\n\t\t\t\t\tconst x = ix * segmentWidth - widthHalf;\n\n\t\t\t\t\t// set values to correct vector component\n\n\t\t\t\t\tvector[ u ] = x * udir;\n\t\t\t\t\tvector[ v ] = y * vdir;\n\t\t\t\t\tvector[ w ] = depthHalf;\n\n\t\t\t\t\t// now apply vector to vertex buffer\n\n\t\t\t\t\tvertices.push( vector.x, vector.y, vector.z );\n\n\t\t\t\t\t// set values to correct vector component\n\n\t\t\t\t\tvector[ u ] = 0;\n\t\t\t\t\tvector[ v ] = 0;\n\t\t\t\t\tvector[ w ] = depth > 0 ? 1 : - 1;\n\n\t\t\t\t\t// now apply vector to normal buffer\n\n\t\t\t\t\tnormals.push( vector.x, vector.y, vector.z );\n\n\t\t\t\t\t// uvs\n\n\t\t\t\t\tuvs.push( ix / gridX );\n\t\t\t\t\tuvs.push( 1 - ( iy / gridY ) );\n\n\t\t\t\t\t// counters\n\n\t\t\t\t\tvertexCounter += 1;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// indices\n\n\t\t\t// 1. you need three indices to draw a single face\n\t\t\t// 2. a single segment consists of two faces\n\t\t\t// 3. so we need to generate six (2*3) indices per segment\n\n\t\t\tfor ( let iy = 0; iy < gridY; iy ++ ) {\n\n\t\t\t\tfor ( let ix = 0; ix < gridX; ix ++ ) {\n\n\t\t\t\t\tconst a = numberOfVertices + ix + gridX1 * iy;\n\t\t\t\t\tconst b = numberOfVertices + ix + gridX1 * ( iy + 1 );\n\t\t\t\t\tconst c = numberOfVertices + ( ix + 1 ) + gridX1 * ( iy + 1 );\n\t\t\t\t\tconst d = numberOfVertices + ( ix + 1 ) + gridX1 * iy;\n\n\t\t\t\t\t// faces\n\n\t\t\t\t\tindices.push( a, b, d );\n\t\t\t\t\tindices.push( b, c, d );\n\n\t\t\t\t\t// increase counter\n\n\t\t\t\t\tgroupCount += 6;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// add a group to the geometry. this will ensure multi material support\n\n\t\t\tscope.addGroup( groupStart, groupCount, materialIndex );\n\n\t\t\t// calculate new start value for groups\n\n\t\t\tgroupStart += groupCount;\n\n\t\t\t// update total number of vertices\n\n\t\t\tnumberOfVertices += vertexCounter;\n\n\t\t}\n\n\t}\n\n}\n\n/**\n * Uniform Utilities\n */\n\nfunction cloneUniforms( src ) {\n\n\tconst dst = {};\n\n\tfor ( const u in src ) {\n\n\t\tdst[ u ] = {};\n\n\t\tfor ( const p in src[ u ] ) {\n\n\t\t\tconst property = src[ u ][ p ];\n\n\t\t\tif ( property && ( property.isColor ||\n\t\t\t\tproperty.isMatrix3 || property.isMatrix4 ||\n\t\t\t\tproperty.isVector2 || property.isVector3 || property.isVector4 ||\n\t\t\t\tproperty.isTexture ) ) {\n\n\t\t\t\tdst[ u ][ p ] = property.clone();\n\n\t\t\t} else if ( Array.isArray( property ) ) {\n\n\t\t\t\tdst[ u ][ p ] = property.slice();\n\n\t\t\t} else {\n\n\t\t\t\tdst[ u ][ p ] = property;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\treturn dst;\n\n}\n\nfunction mergeUniforms( uniforms ) {\n\n\tconst merged = {};\n\n\tfor ( let u = 0; u < uniforms.length; u ++ ) {\n\n\t\tconst tmp = cloneUniforms( uniforms[ u ] );\n\n\t\tfor ( const p in tmp ) {\n\n\t\t\tmerged[ p ] = tmp[ p ];\n\n\t\t}\n\n\t}\n\n\treturn merged;\n\n}\n\n// Legacy\n\nconst UniformsUtils = { clone: cloneUniforms, merge: mergeUniforms };\n\nvar default_vertex = \"void main() {\\n\\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );\\n}\";\n\nvar default_fragment = \"void main() {\\n\\tgl_FragColor = vec4( 1.0, 0.0, 0.0, 1.0 );\\n}\";\n\n/**\n * parameters = {\n *  defines: { \"label\" : \"value\" },\n *  uniforms: { \"parameter1\": { value: 1.0 }, \"parameter2\": { value2: 2 } },\n *\n *  fragmentShader: <string>,\n *  vertexShader: <string>,\n *\n *  wireframe: <boolean>,\n *  wireframeLinewidth: <float>,\n *\n *  lights: <bool>,\n *\n *  skinning: <bool>,\n *  morphTargets: <bool>,\n *  morphNormals: <bool>\n * }\n */\n\nfunction ShaderMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.type = 'ShaderMaterial';\n\n\tthis.defines = {};\n\tthis.uniforms = {};\n\n\tthis.vertexShader = default_vertex;\n\tthis.fragmentShader = default_fragment;\n\n\tthis.linewidth = 1;\n\n\tthis.wireframe = false;\n\tthis.wireframeLinewidth = 1;\n\n\tthis.fog = false; // set to use scene fog\n\tthis.lights = false; // set to use scene lights\n\tthis.clipping = false; // set to use user-defined clipping planes\n\n\tthis.skinning = false; // set to use skinning attribute streams\n\tthis.morphTargets = false; // set to use morph targets\n\tthis.morphNormals = false; // set to use morph normals\n\n\tthis.extensions = {\n\t\tderivatives: false, // set to use derivatives\n\t\tfragDepth: false, // set to use fragment depth values\n\t\tdrawBuffers: false, // set to use draw buffers\n\t\tshaderTextureLOD: false // set to use shader texture LOD\n\t};\n\n\t// When rendered geometry doesn't include these attributes but the material does,\n\t// use these default values in WebGL. This avoids errors when buffer data is missing.\n\tthis.defaultAttributeValues = {\n\t\t'color': [ 1, 1, 1 ],\n\t\t'uv': [ 0, 0 ],\n\t\t'uv2': [ 0, 0 ]\n\t};\n\n\tthis.index0AttributeName = undefined;\n\tthis.uniformsNeedUpdate = false;\n\n\tthis.glslVersion = null;\n\n\tif ( parameters !== undefined ) {\n\n\t\tif ( parameters.attributes !== undefined ) {\n\n\t\t\tconsole.error( 'THREE.ShaderMaterial: attributes should now be defined in THREE.BufferGeometry instead.' );\n\n\t\t}\n\n\t\tthis.setValues( parameters );\n\n\t}\n\n}\n\nShaderMaterial.prototype = Object.create( Material.prototype );\nShaderMaterial.prototype.constructor = ShaderMaterial;\n\nShaderMaterial.prototype.isShaderMaterial = true;\n\nShaderMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.fragmentShader = source.fragmentShader;\n\tthis.vertexShader = source.vertexShader;\n\n\tthis.uniforms = cloneUniforms( source.uniforms );\n\n\tthis.defines = Object.assign( {}, source.defines );\n\n\tthis.wireframe = source.wireframe;\n\tthis.wireframeLinewidth = source.wireframeLinewidth;\n\n\tthis.lights = source.lights;\n\tthis.clipping = source.clipping;\n\n\tthis.skinning = source.skinning;\n\n\tthis.morphTargets = source.morphTargets;\n\tthis.morphNormals = source.morphNormals;\n\n\tthis.extensions = Object.assign( {}, source.extensions );\n\n\tthis.glslVersion = source.glslVersion;\n\n\treturn this;\n\n};\n\nShaderMaterial.prototype.toJSON = function ( meta ) {\n\n\tconst data = Material.prototype.toJSON.call( this, meta );\n\n\tdata.glslVersion = this.glslVersion;\n\tdata.uniforms = {};\n\n\tfor ( const name in this.uniforms ) {\n\n\t\tconst uniform = this.uniforms[ name ];\n\t\tconst value = uniform.value;\n\n\t\tif ( value && value.isTexture ) {\n\n\t\t\tdata.uniforms[ name ] = {\n\t\t\t\ttype: 't',\n\t\t\t\tvalue: value.toJSON( meta ).uuid\n\t\t\t};\n\n\t\t} else if ( value && value.isColor ) {\n\n\t\t\tdata.uniforms[ name ] = {\n\t\t\t\ttype: 'c',\n\t\t\t\tvalue: value.getHex()\n\t\t\t};\n\n\t\t} else if ( value && value.isVector2 ) {\n\n\t\t\tdata.uniforms[ name ] = {\n\t\t\t\ttype: 'v2',\n\t\t\t\tvalue: value.toArray()\n\t\t\t};\n\n\t\t} else if ( value && value.isVector3 ) {\n\n\t\t\tdata.uniforms[ name ] = {\n\t\t\t\ttype: 'v3',\n\t\t\t\tvalue: value.toArray()\n\t\t\t};\n\n\t\t} else if ( value && value.isVector4 ) {\n\n\t\t\tdata.uniforms[ name ] = {\n\t\t\t\ttype: 'v4',\n\t\t\t\tvalue: value.toArray()\n\t\t\t};\n\n\t\t} else if ( value && value.isMatrix3 ) {\n\n\t\t\tdata.uniforms[ name ] = {\n\t\t\t\ttype: 'm3',\n\t\t\t\tvalue: value.toArray()\n\t\t\t};\n\n\t\t} else if ( value && value.isMatrix4 ) {\n\n\t\t\tdata.uniforms[ name ] = {\n\t\t\t\ttype: 'm4',\n\t\t\t\tvalue: value.toArray()\n\t\t\t};\n\n\t\t} else {\n\n\t\t\tdata.uniforms[ name ] = {\n\t\t\t\tvalue: value\n\t\t\t};\n\n\t\t\t// note: the array variants v2v, v3v, v4v, m4v and tv are not supported so far\n\n\t\t}\n\n\t}\n\n\tif ( Object.keys( this.defines ).length > 0 ) data.defines = this.defines;\n\n\tdata.vertexShader = this.vertexShader;\n\tdata.fragmentShader = this.fragmentShader;\n\n\tconst extensions = {};\n\n\tfor ( const key in this.extensions ) {\n\n\t\tif ( this.extensions[ key ] === true ) extensions[ key ] = true;\n\n\t}\n\n\tif ( Object.keys( extensions ).length > 0 ) data.extensions = extensions;\n\n\treturn data;\n\n};\n\nfunction Camera() {\n\n\tObject3D.call( this );\n\n\tthis.type = 'Camera';\n\n\tthis.matrixWorldInverse = new Matrix4();\n\n\tthis.projectionMatrix = new Matrix4();\n\tthis.projectionMatrixInverse = new Matrix4();\n\n}\n\nCamera.prototype = Object.assign( Object.create( Object3D.prototype ), {\n\n\tconstructor: Camera,\n\n\tisCamera: true,\n\n\tcopy: function ( source, recursive ) {\n\n\t\tObject3D.prototype.copy.call( this, source, recursive );\n\n\t\tthis.matrixWorldInverse.copy( source.matrixWorldInverse );\n\n\t\tthis.projectionMatrix.copy( source.projectionMatrix );\n\t\tthis.projectionMatrixInverse.copy( source.projectionMatrixInverse );\n\n\t\treturn this;\n\n\t},\n\n\tgetWorldDirection: function ( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Camera: .getWorldDirection() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\tthis.updateWorldMatrix( true, false );\n\n\t\tconst e = this.matrixWorld.elements;\n\n\t\treturn target.set( - e[ 8 ], - e[ 9 ], - e[ 10 ] ).normalize();\n\n\t},\n\n\tupdateMatrixWorld: function ( force ) {\n\n\t\tObject3D.prototype.updateMatrixWorld.call( this, force );\n\n\t\tthis.matrixWorldInverse.copy( this.matrixWorld ).invert();\n\n\t},\n\n\tupdateWorldMatrix: function ( updateParents, updateChildren ) {\n\n\t\tObject3D.prototype.updateWorldMatrix.call( this, updateParents, updateChildren );\n\n\t\tthis.matrixWorldInverse.copy( this.matrixWorld ).invert();\n\n\t},\n\n\tclone: function () {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n} );\n\nfunction PerspectiveCamera( fov = 50, aspect = 1, near = 0.1, far = 2000 ) {\n\n\tCamera.call( this );\n\n\tthis.type = 'PerspectiveCamera';\n\n\tthis.fov = fov;\n\tthis.zoom = 1;\n\n\tthis.near = near;\n\tthis.far = far;\n\tthis.focus = 10;\n\n\tthis.aspect = aspect;\n\tthis.view = null;\n\n\tthis.filmGauge = 35;\t// width of the film (default in millimeters)\n\tthis.filmOffset = 0;\t// horizontal film offset (same unit as gauge)\n\n\tthis.updateProjectionMatrix();\n\n}\n\nPerspectiveCamera.prototype = Object.assign( Object.create( Camera.prototype ), {\n\n\tconstructor: PerspectiveCamera,\n\n\tisPerspectiveCamera: true,\n\n\tcopy: function ( source, recursive ) {\n\n\t\tCamera.prototype.copy.call( this, source, recursive );\n\n\t\tthis.fov = source.fov;\n\t\tthis.zoom = source.zoom;\n\n\t\tthis.near = source.near;\n\t\tthis.far = source.far;\n\t\tthis.focus = source.focus;\n\n\t\tthis.aspect = source.aspect;\n\t\tthis.view = source.view === null ? null : Object.assign( {}, source.view );\n\n\t\tthis.filmGauge = source.filmGauge;\n\t\tthis.filmOffset = source.filmOffset;\n\n\t\treturn this;\n\n\t},\n\n\t/**\n\t * Sets the FOV by focal length in respect to the current .filmGauge.\n\t *\n\t * The default film gauge is 35, so that the focal length can be specified for\n\t * a 35mm (full frame) camera.\n\t *\n\t * Values for focal length and film gauge must have the same unit.\n\t */\n\tsetFocalLength: function ( focalLength ) {\n\n\t\t// see http://www.bobatkins.com/photography/technical/field_of_view.html\n\t\tconst vExtentSlope = 0.5 * this.getFilmHeight() / focalLength;\n\n\t\tthis.fov = MathUtils.RAD2DEG * 2 * Math.atan( vExtentSlope );\n\t\tthis.updateProjectionMatrix();\n\n\t},\n\n\t/**\n\t * Calculates the focal length from the current .fov and .filmGauge.\n\t */\n\tgetFocalLength: function () {\n\n\t\tconst vExtentSlope = Math.tan( MathUtils.DEG2RAD * 0.5 * this.fov );\n\n\t\treturn 0.5 * this.getFilmHeight() / vExtentSlope;\n\n\t},\n\n\tgetEffectiveFOV: function () {\n\n\t\treturn MathUtils.RAD2DEG * 2 * Math.atan(\n\t\t\tMath.tan( MathUtils.DEG2RAD * 0.5 * this.fov ) / this.zoom );\n\n\t},\n\n\tgetFilmWidth: function () {\n\n\t\t// film not completely covered in portrait format (aspect < 1)\n\t\treturn this.filmGauge * Math.min( this.aspect, 1 );\n\n\t},\n\n\tgetFilmHeight: function () {\n\n\t\t// film not completely covered in landscape format (aspect > 1)\n\t\treturn this.filmGauge / Math.max( this.aspect, 1 );\n\n\t},\n\n\t/**\n\t * Sets an offset in a larger frustum. This is useful for multi-window or\n\t * multi-monitor/multi-machine setups.\n\t *\n\t * For example, if you have 3x2 monitors and each monitor is 1920x1080 and\n\t * the monitors are in grid like this\n\t *\n\t *   +---+---+---+\n\t *   | A | B | C |\n\t *   +---+---+---+\n\t *   | D | E | F |\n\t *   +---+---+---+\n\t *\n\t * then for each monitor you would call it like this\n\t *\n\t *   const w = 1920;\n\t *   const h = 1080;\n\t *   const fullWidth = w * 3;\n\t *   const fullHeight = h * 2;\n\t *\n\t *   --A--\n\t *   camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 0, w, h );\n\t *   --B--\n\t *   camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 0, w, h );\n\t *   --C--\n\t *   camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 0, w, h );\n\t *   --D--\n\t *   camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 1, w, h );\n\t *   --E--\n\t *   camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 1, w, h );\n\t *   --F--\n\t *   camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 1, w, h );\n\t *\n\t *   Note there is no reason monitors have to be the same size or in a grid.\n\t */\n\tsetViewOffset: function ( fullWidth, fullHeight, x, y, width, height ) {\n\n\t\tthis.aspect = fullWidth / fullHeight;\n\n\t\tif ( this.view === null ) {\n\n\t\t\tthis.view = {\n\t\t\t\tenabled: true,\n\t\t\t\tfullWidth: 1,\n\t\t\t\tfullHeight: 1,\n\t\t\t\toffsetX: 0,\n\t\t\t\toffsetY: 0,\n\t\t\t\twidth: 1,\n\t\t\t\theight: 1\n\t\t\t};\n\n\t\t}\n\n\t\tthis.view.enabled = true;\n\t\tthis.view.fullWidth = fullWidth;\n\t\tthis.view.fullHeight = fullHeight;\n\t\tthis.view.offsetX = x;\n\t\tthis.view.offsetY = y;\n\t\tthis.view.width = width;\n\t\tthis.view.height = height;\n\n\t\tthis.updateProjectionMatrix();\n\n\t},\n\n\tclearViewOffset: function () {\n\n\t\tif ( this.view !== null ) {\n\n\t\t\tthis.view.enabled = false;\n\n\t\t}\n\n\t\tthis.updateProjectionMatrix();\n\n\t},\n\n\tupdateProjectionMatrix: function () {\n\n\t\tconst near = this.near;\n\t\tlet top = near * Math.tan( MathUtils.DEG2RAD * 0.5 * this.fov ) / this.zoom;\n\t\tlet height = 2 * top;\n\t\tlet width = this.aspect * height;\n\t\tlet left = - 0.5 * width;\n\t\tconst view = this.view;\n\n\t\tif ( this.view !== null && this.view.enabled ) {\n\n\t\t\tconst fullWidth = view.fullWidth,\n\t\t\t\tfullHeight = view.fullHeight;\n\n\t\t\tleft += view.offsetX * width / fullWidth;\n\t\t\ttop -= view.offsetY * height / fullHeight;\n\t\t\twidth *= view.width / fullWidth;\n\t\t\theight *= view.height / fullHeight;\n\n\t\t}\n\n\t\tconst skew = this.filmOffset;\n\t\tif ( skew !== 0 ) left += near * skew / this.getFilmWidth();\n\n\t\tthis.projectionMatrix.makePerspective( left, left + width, top, top - height, near, this.far );\n\n\t\tthis.projectionMatrixInverse.copy( this.projectionMatrix ).invert();\n\n\t},\n\n\ttoJSON: function ( meta ) {\n\n\t\tconst data = Object3D.prototype.toJSON.call( this, meta );\n\n\t\tdata.object.fov = this.fov;\n\t\tdata.object.zoom = this.zoom;\n\n\t\tdata.object.near = this.near;\n\t\tdata.object.far = this.far;\n\t\tdata.object.focus = this.focus;\n\n\t\tdata.object.aspect = this.aspect;\n\n\t\tif ( this.view !== null ) data.object.view = Object.assign( {}, this.view );\n\n\t\tdata.object.filmGauge = this.filmGauge;\n\t\tdata.object.filmOffset = this.filmOffset;\n\n\t\treturn data;\n\n\t}\n\n} );\n\nconst fov = 90, aspect = 1;\n\nfunction CubeCamera( near, far, renderTarget ) {\n\n\tObject3D.call( this );\n\n\tthis.type = 'CubeCamera';\n\n\tif ( renderTarget.isWebGLCubeRenderTarget !== true ) {\n\n\t\tconsole.error( 'THREE.CubeCamera: The constructor now expects an instance of WebGLCubeRenderTarget as third parameter.' );\n\t\treturn;\n\n\t}\n\n\tthis.renderTarget = renderTarget;\n\n\tconst cameraPX = new PerspectiveCamera( fov, aspect, near, far );\n\tcameraPX.layers = this.layers;\n\tcameraPX.up.set( 0, - 1, 0 );\n\tcameraPX.lookAt( new Vector3( 1, 0, 0 ) );\n\tthis.add( cameraPX );\n\n\tconst cameraNX = new PerspectiveCamera( fov, aspect, near, far );\n\tcameraNX.layers = this.layers;\n\tcameraNX.up.set( 0, - 1, 0 );\n\tcameraNX.lookAt( new Vector3( - 1, 0, 0 ) );\n\tthis.add( cameraNX );\n\n\tconst cameraPY = new PerspectiveCamera( fov, aspect, near, far );\n\tcameraPY.layers = this.layers;\n\tcameraPY.up.set( 0, 0, 1 );\n\tcameraPY.lookAt( new Vector3( 0, 1, 0 ) );\n\tthis.add( cameraPY );\n\n\tconst cameraNY = new PerspectiveCamera( fov, aspect, near, far );\n\tcameraNY.layers = this.layers;\n\tcameraNY.up.set( 0, 0, - 1 );\n\tcameraNY.lookAt( new Vector3( 0, - 1, 0 ) );\n\tthis.add( cameraNY );\n\n\tconst cameraPZ = new PerspectiveCamera( fov, aspect, near, far );\n\tcameraPZ.layers = this.layers;\n\tcameraPZ.up.set( 0, - 1, 0 );\n\tcameraPZ.lookAt( new Vector3( 0, 0, 1 ) );\n\tthis.add( cameraPZ );\n\n\tconst cameraNZ = new PerspectiveCamera( fov, aspect, near, far );\n\tcameraNZ.layers = this.layers;\n\tcameraNZ.up.set( 0, - 1, 0 );\n\tcameraNZ.lookAt( new Vector3( 0, 0, - 1 ) );\n\tthis.add( cameraNZ );\n\n\tthis.update = function ( renderer, scene ) {\n\n\t\tif ( this.parent === null ) this.updateMatrixWorld();\n\n\t\tconst currentXrEnabled = renderer.xr.enabled;\n\t\tconst currentRenderTarget = renderer.getRenderTarget();\n\n\t\trenderer.xr.enabled = false;\n\n\t\tconst generateMipmaps = renderTarget.texture.generateMipmaps;\n\n\t\trenderTarget.texture.generateMipmaps = false;\n\n\t\trenderer.setRenderTarget( renderTarget, 0 );\n\t\trenderer.render( scene, cameraPX );\n\n\t\trenderer.setRenderTarget( renderTarget, 1 );\n\t\trenderer.render( scene, cameraNX );\n\n\t\trenderer.setRenderTarget( renderTarget, 2 );\n\t\trenderer.render( scene, cameraPY );\n\n\t\trenderer.setRenderTarget( renderTarget, 3 );\n\t\trenderer.render( scene, cameraNY );\n\n\t\trenderer.setRenderTarget( renderTarget, 4 );\n\t\trenderer.render( scene, cameraPZ );\n\n\t\trenderTarget.texture.generateMipmaps = generateMipmaps;\n\n\t\trenderer.setRenderTarget( renderTarget, 5 );\n\t\trenderer.render( scene, cameraNZ );\n\n\t\trenderer.setRenderTarget( currentRenderTarget );\n\n\t\trenderer.xr.enabled = currentXrEnabled;\n\n\t};\n\n}\n\nCubeCamera.prototype = Object.create( Object3D.prototype );\nCubeCamera.prototype.constructor = CubeCamera;\n\nfunction CubeTexture( images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding ) {\n\n\timages = images !== undefined ? images : [];\n\tmapping = mapping !== undefined ? mapping : CubeReflectionMapping;\n\tformat = format !== undefined ? format : RGBFormat;\n\n\tTexture.call( this, images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );\n\n\tthis.flipY = false;\n\n\t// Why CubeTexture._needsFlipEnvMap is necessary:\n\t//\n\t// By convention -- likely based on the RenderMan spec from the 1990's -- cube maps are specified by WebGL (and three.js)\n\t// in a coordinate system in which positive-x is to the right when looking up the positive-z axis -- in other words,\n\t// in a left-handed coordinate system. By continuing this convention, preexisting cube maps continued to render correctly.\n\n\t// three.js uses a right-handed coordinate system. So environment maps used in three.js appear to have px and nx swapped\n\t// and the flag _needsFlipEnvMap controls this conversion. The flip is not required (and thus _needsFlipEnvMap is set to false)\n\t// when using WebGLCubeRenderTarget.texture as a cube texture.\n\n\tthis._needsFlipEnvMap = true;\n\n}\n\nCubeTexture.prototype = Object.create( Texture.prototype );\nCubeTexture.prototype.constructor = CubeTexture;\n\nCubeTexture.prototype.isCubeTexture = true;\n\nObject.defineProperty( CubeTexture.prototype, 'images', {\n\n\tget: function () {\n\n\t\treturn this.image;\n\n\t},\n\n\tset: function ( value ) {\n\n\t\tthis.image = value;\n\n\t}\n\n} );\n\nfunction WebGLCubeRenderTarget( size, options, dummy ) {\n\n\tif ( Number.isInteger( options ) ) {\n\n\t\tconsole.warn( 'THREE.WebGLCubeRenderTarget: constructor signature is now WebGLCubeRenderTarget( size, options )' );\n\n\t\toptions = dummy;\n\n\t}\n\n\tWebGLRenderTarget.call( this, size, size, options );\n\n\toptions = options || {};\n\n\tthis.texture = new CubeTexture( undefined, options.mapping, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.encoding );\n\n\tthis.texture._needsFlipEnvMap = false;\n\n}\n\nWebGLCubeRenderTarget.prototype = Object.create( WebGLRenderTarget.prototype );\nWebGLCubeRenderTarget.prototype.constructor = WebGLCubeRenderTarget;\n\nWebGLCubeRenderTarget.prototype.isWebGLCubeRenderTarget = true;\n\nWebGLCubeRenderTarget.prototype.fromEquirectangularTexture = function ( renderer, texture ) {\n\n\tthis.texture.type = texture.type;\n\tthis.texture.format = RGBAFormat; // see #18859\n\tthis.texture.encoding = texture.encoding;\n\n\tthis.texture.generateMipmaps = texture.generateMipmaps;\n\tthis.texture.minFilter = texture.minFilter;\n\tthis.texture.magFilter = texture.magFilter;\n\n\tconst shader = {\n\n\t\tuniforms: {\n\t\t\ttEquirect: { value: null },\n\t\t},\n\n\t\tvertexShader: /* glsl */`\n\n\t\t\tvarying vec3 vWorldDirection;\n\n\t\t\tvec3 transformDirection( in vec3 dir, in mat4 matrix ) {\n\n\t\t\t\treturn normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );\n\n\t\t\t}\n\n\t\t\tvoid main() {\n\n\t\t\t\tvWorldDirection = transformDirection( position, modelMatrix );\n\n\t\t\t\t#include <begin_vertex>\n\t\t\t\t#include <project_vertex>\n\n\t\t\t}\n\t\t`,\n\n\t\tfragmentShader: /* glsl */`\n\n\t\t\tuniform sampler2D tEquirect;\n\n\t\t\tvarying vec3 vWorldDirection;\n\n\t\t\t#include <common>\n\n\t\t\tvoid main() {\n\n\t\t\t\tvec3 direction = normalize( vWorldDirection );\n\n\t\t\t\tvec2 sampleUV = equirectUv( direction );\n\n\t\t\t\tgl_FragColor = texture2D( tEquirect, sampleUV );\n\n\t\t\t}\n\t\t`\n\t};\n\n\tconst geometry = new BoxBufferGeometry( 5, 5, 5 );\n\n\tconst material = new ShaderMaterial( {\n\n\t\tname: 'CubemapFromEquirect',\n\n\t\tuniforms: cloneUniforms( shader.uniforms ),\n\t\tvertexShader: shader.vertexShader,\n\t\tfragmentShader: shader.fragmentShader,\n\t\tside: BackSide,\n\t\tblending: NoBlending\n\n\t} );\n\n\tmaterial.uniforms.tEquirect.value = texture;\n\n\tconst mesh = new Mesh( geometry, material );\n\n\tconst currentMinFilter = texture.minFilter;\n\n\t// Avoid blurred poles\n\tif ( texture.minFilter === LinearMipmapLinearFilter ) texture.minFilter = LinearFilter;\n\n\tconst camera = new CubeCamera( 1, 10, this );\n\tcamera.update( renderer, mesh );\n\n\ttexture.minFilter = currentMinFilter;\n\n\tmesh.geometry.dispose();\n\tmesh.material.dispose();\n\n\treturn this;\n\n};\n\nWebGLCubeRenderTarget.prototype.clear = function ( renderer, color, depth, stencil ) {\n\n\tconst currentRenderTarget = renderer.getRenderTarget();\n\n\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\trenderer.setRenderTarget( this, i );\n\n\t\trenderer.clear( color, depth, stencil );\n\n\t}\n\n\trenderer.setRenderTarget( currentRenderTarget );\n\n};\n\nfunction DataTexture( data, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, encoding ) {\n\n\tTexture.call( this, null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );\n\n\tthis.image = { data: data || null, width: width || 1, height: height || 1 };\n\n\tthis.magFilter = magFilter !== undefined ? magFilter : NearestFilter;\n\tthis.minFilter = minFilter !== undefined ? minFilter : NearestFilter;\n\n\tthis.generateMipmaps = false;\n\tthis.flipY = false;\n\tthis.unpackAlignment = 1;\n\n\tthis.needsUpdate = true;\n\n}\n\nDataTexture.prototype = Object.create( Texture.prototype );\nDataTexture.prototype.constructor = DataTexture;\n\nDataTexture.prototype.isDataTexture = true;\n\nconst _sphere$1 = /*@__PURE__*/ new Sphere();\nconst _vector$5 = /*@__PURE__*/ new Vector3();\n\nclass Frustum {\n\n\tconstructor( p0, p1, p2, p3, p4, p5 ) {\n\n\t\tthis.planes = [\n\n\t\t\t( p0 !== undefined ) ? p0 : new Plane(),\n\t\t\t( p1 !== undefined ) ? p1 : new Plane(),\n\t\t\t( p2 !== undefined ) ? p2 : new Plane(),\n\t\t\t( p3 !== undefined ) ? p3 : new Plane(),\n\t\t\t( p4 !== undefined ) ? p4 : new Plane(),\n\t\t\t( p5 !== undefined ) ? p5 : new Plane()\n\n\t\t];\n\n\t}\n\n\tset( p0, p1, p2, p3, p4, p5 ) {\n\n\t\tconst planes = this.planes;\n\n\t\tplanes[ 0 ].copy( p0 );\n\t\tplanes[ 1 ].copy( p1 );\n\t\tplanes[ 2 ].copy( p2 );\n\t\tplanes[ 3 ].copy( p3 );\n\t\tplanes[ 4 ].copy( p4 );\n\t\tplanes[ 5 ].copy( p5 );\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( frustum ) {\n\n\t\tconst planes = this.planes;\n\n\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\tplanes[ i ].copy( frustum.planes[ i ] );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetFromProjectionMatrix( m ) {\n\n\t\tconst planes = this.planes;\n\t\tconst me = m.elements;\n\t\tconst me0 = me[ 0 ], me1 = me[ 1 ], me2 = me[ 2 ], me3 = me[ 3 ];\n\t\tconst me4 = me[ 4 ], me5 = me[ 5 ], me6 = me[ 6 ], me7 = me[ 7 ];\n\t\tconst me8 = me[ 8 ], me9 = me[ 9 ], me10 = me[ 10 ], me11 = me[ 11 ];\n\t\tconst me12 = me[ 12 ], me13 = me[ 13 ], me14 = me[ 14 ], me15 = me[ 15 ];\n\n\t\tplanes[ 0 ].setComponents( me3 - me0, me7 - me4, me11 - me8, me15 - me12 ).normalize();\n\t\tplanes[ 1 ].setComponents( me3 + me0, me7 + me4, me11 + me8, me15 + me12 ).normalize();\n\t\tplanes[ 2 ].setComponents( me3 + me1, me7 + me5, me11 + me9, me15 + me13 ).normalize();\n\t\tplanes[ 3 ].setComponents( me3 - me1, me7 - me5, me11 - me9, me15 - me13 ).normalize();\n\t\tplanes[ 4 ].setComponents( me3 - me2, me7 - me6, me11 - me10, me15 - me14 ).normalize();\n\t\tplanes[ 5 ].setComponents( me3 + me2, me7 + me6, me11 + me10, me15 + me14 ).normalize();\n\n\t\treturn this;\n\n\t}\n\n\tintersectsObject( object ) {\n\n\t\tconst geometry = object.geometry;\n\n\t\tif ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();\n\n\t\t_sphere$1.copy( geometry.boundingSphere ).applyMatrix4( object.matrixWorld );\n\n\t\treturn this.intersectsSphere( _sphere$1 );\n\n\t}\n\n\tintersectsSprite( sprite ) {\n\n\t\t_sphere$1.center.set( 0, 0, 0 );\n\t\t_sphere$1.radius = 0.7071067811865476;\n\t\t_sphere$1.applyMatrix4( sprite.matrixWorld );\n\n\t\treturn this.intersectsSphere( _sphere$1 );\n\n\t}\n\n\tintersectsSphere( sphere ) {\n\n\t\tconst planes = this.planes;\n\t\tconst center = sphere.center;\n\t\tconst negRadius = - sphere.radius;\n\n\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\tconst distance = planes[ i ].distanceToPoint( center );\n\n\t\t\tif ( distance < negRadius ) {\n\n\t\t\t\treturn false;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn true;\n\n\t}\n\n\tintersectsBox( box ) {\n\n\t\tconst planes = this.planes;\n\n\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\tconst plane = planes[ i ];\n\n\t\t\t// corner at max distance\n\n\t\t\t_vector$5.x = plane.normal.x > 0 ? box.max.x : box.min.x;\n\t\t\t_vector$5.y = plane.normal.y > 0 ? box.max.y : box.min.y;\n\t\t\t_vector$5.z = plane.normal.z > 0 ? box.max.z : box.min.z;\n\n\t\t\tif ( plane.distanceToPoint( _vector$5 ) < 0 ) {\n\n\t\t\t\treturn false;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn true;\n\n\t}\n\n\tcontainsPoint( point ) {\n\n\t\tconst planes = this.planes;\n\n\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\tif ( planes[ i ].distanceToPoint( point ) < 0 ) {\n\n\t\t\t\treturn false;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn true;\n\n\t}\n\n}\n\nfunction WebGLAnimation() {\n\n\tlet context = null;\n\tlet isAnimating = false;\n\tlet animationLoop = null;\n\tlet requestId = null;\n\n\tfunction onAnimationFrame( time, frame ) {\n\n\t\tanimationLoop( time, frame );\n\n\t\trequestId = context.requestAnimationFrame( onAnimationFrame );\n\n\t}\n\n\treturn {\n\n\t\tstart: function () {\n\n\t\t\tif ( isAnimating === true ) return;\n\t\t\tif ( animationLoop === null ) return;\n\n\t\t\trequestId = context.requestAnimationFrame( onAnimationFrame );\n\n\t\t\tisAnimating = true;\n\n\t\t},\n\n\t\tstop: function () {\n\n\t\t\tcontext.cancelAnimationFrame( requestId );\n\n\t\t\tisAnimating = false;\n\n\t\t},\n\n\t\tsetAnimationLoop: function ( callback ) {\n\n\t\t\tanimationLoop = callback;\n\n\t\t},\n\n\t\tsetContext: function ( value ) {\n\n\t\t\tcontext = value;\n\n\t\t}\n\n\t};\n\n}\n\nfunction WebGLAttributes( gl, capabilities ) {\n\n\tconst isWebGL2 = capabilities.isWebGL2;\n\n\tconst buffers = new WeakMap();\n\n\tfunction createBuffer( attribute, bufferType ) {\n\n\t\tconst array = attribute.array;\n\t\tconst usage = attribute.usage;\n\n\t\tconst buffer = gl.createBuffer();\n\n\t\tgl.bindBuffer( bufferType, buffer );\n\t\tgl.bufferData( bufferType, array, usage );\n\n\t\tattribute.onUploadCallback();\n\n\t\tlet type = 5126;\n\n\t\tif ( array instanceof Float32Array ) {\n\n\t\t\ttype = 5126;\n\n\t\t} else if ( array instanceof Float64Array ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLAttributes: Unsupported data buffer format: Float64Array.' );\n\n\t\t} else if ( array instanceof Uint16Array ) {\n\n\t\t\tif ( attribute.isFloat16BufferAttribute ) {\n\n\t\t\t\tif ( isWebGL2 ) {\n\n\t\t\t\t\ttype = 5131;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.warn( 'THREE.WebGLAttributes: Usage of Float16BufferAttribute requires WebGL2.' );\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\ttype = 5123;\n\n\t\t\t}\n\n\t\t} else if ( array instanceof Int16Array ) {\n\n\t\t\ttype = 5122;\n\n\t\t} else if ( array instanceof Uint32Array ) {\n\n\t\t\ttype = 5125;\n\n\t\t} else if ( array instanceof Int32Array ) {\n\n\t\t\ttype = 5124;\n\n\t\t} else if ( array instanceof Int8Array ) {\n\n\t\t\ttype = 5120;\n\n\t\t} else if ( array instanceof Uint8Array ) {\n\n\t\t\ttype = 5121;\n\n\t\t}\n\n\t\treturn {\n\t\t\tbuffer: buffer,\n\t\t\ttype: type,\n\t\t\tbytesPerElement: array.BYTES_PER_ELEMENT,\n\t\t\tversion: attribute.version\n\t\t};\n\n\t}\n\n\tfunction updateBuffer( buffer, attribute, bufferType ) {\n\n\t\tconst array = attribute.array;\n\t\tconst updateRange = attribute.updateRange;\n\n\t\tgl.bindBuffer( bufferType, buffer );\n\n\t\tif ( updateRange.count === - 1 ) {\n\n\t\t\t// Not using update ranges\n\n\t\t\tgl.bufferSubData( bufferType, 0, array );\n\n\t\t} else {\n\n\t\t\tif ( isWebGL2 ) {\n\n\t\t\t\tgl.bufferSubData( bufferType, updateRange.offset * array.BYTES_PER_ELEMENT,\n\t\t\t\t\tarray, updateRange.offset, updateRange.count );\n\n\t\t\t} else {\n\n\t\t\t\tgl.bufferSubData( bufferType, updateRange.offset * array.BYTES_PER_ELEMENT,\n\t\t\t\t\tarray.subarray( updateRange.offset, updateRange.offset + updateRange.count ) );\n\n\t\t\t}\n\n\t\t\tupdateRange.count = - 1; // reset range\n\n\t\t}\n\n\t}\n\n\t//\n\n\tfunction get( attribute ) {\n\n\t\tif ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;\n\n\t\treturn buffers.get( attribute );\n\n\t}\n\n\tfunction remove( attribute ) {\n\n\t\tif ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;\n\n\t\tconst data = buffers.get( attribute );\n\n\t\tif ( data ) {\n\n\t\t\tgl.deleteBuffer( data.buffer );\n\n\t\t\tbuffers.delete( attribute );\n\n\t\t}\n\n\t}\n\n\tfunction update( attribute, bufferType ) {\n\n\t\tif ( attribute.isGLBufferAttribute ) {\n\n\t\t\tconst cached = buffers.get( attribute );\n\n\t\t\tif ( ! cached || cached.version < attribute.version ) {\n\n\t\t\t\tbuffers.set( attribute, {\n\t\t\t\t\tbuffer: attribute.buffer,\n\t\t\t\t\ttype: attribute.type,\n\t\t\t\t\tbytesPerElement: attribute.elementSize,\n\t\t\t\t\tversion: attribute.version\n\t\t\t\t} );\n\n\t\t\t}\n\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;\n\n\t\tconst data = buffers.get( attribute );\n\n\t\tif ( data === undefined ) {\n\n\t\t\tbuffers.set( attribute, createBuffer( attribute, bufferType ) );\n\n\t\t} else if ( data.version < attribute.version ) {\n\n\t\t\tupdateBuffer( data.buffer, attribute, bufferType );\n\n\t\t\tdata.version = attribute.version;\n\n\t\t}\n\n\t}\n\n\treturn {\n\n\t\tget: get,\n\t\tremove: remove,\n\t\tupdate: update\n\n\t};\n\n}\n\nclass PlaneBufferGeometry extends BufferGeometry {\n\n\tconstructor( width = 1, height = 1, widthSegments = 1, heightSegments = 1 ) {\n\n\t\tsuper();\n\t\tthis.type = 'PlaneBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\twidth: width,\n\t\t\theight: height,\n\t\t\twidthSegments: widthSegments,\n\t\t\theightSegments: heightSegments\n\t\t};\n\n\t\tconst width_half = width / 2;\n\t\tconst height_half = height / 2;\n\n\t\tconst gridX = Math.floor( widthSegments );\n\t\tconst gridY = Math.floor( heightSegments );\n\n\t\tconst gridX1 = gridX + 1;\n\t\tconst gridY1 = gridY + 1;\n\n\t\tconst segment_width = width / gridX;\n\t\tconst segment_height = height / gridY;\n\n\t\t//\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\tfor ( let iy = 0; iy < gridY1; iy ++ ) {\n\n\t\t\tconst y = iy * segment_height - height_half;\n\n\t\t\tfor ( let ix = 0; ix < gridX1; ix ++ ) {\n\n\t\t\t\tconst x = ix * segment_width - width_half;\n\n\t\t\t\tvertices.push( x, - y, 0 );\n\n\t\t\t\tnormals.push( 0, 0, 1 );\n\n\t\t\t\tuvs.push( ix / gridX );\n\t\t\t\tuvs.push( 1 - ( iy / gridY ) );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfor ( let iy = 0; iy < gridY; iy ++ ) {\n\n\t\t\tfor ( let ix = 0; ix < gridX; ix ++ ) {\n\n\t\t\t\tconst a = ix + gridX1 * iy;\n\t\t\t\tconst b = ix + gridX1 * ( iy + 1 );\n\t\t\t\tconst c = ( ix + 1 ) + gridX1 * ( iy + 1 );\n\t\t\t\tconst d = ( ix + 1 ) + gridX1 * iy;\n\n\t\t\t\tindices.push( a, b, d );\n\t\t\t\tindices.push( b, c, d );\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t}\n\n}\n\nvar alphamap_fragment = \"#ifdef USE_ALPHAMAP\\n\\tdiffuseColor.a *= texture2D( alphaMap, vUv ).g;\\n#endif\";\n\nvar alphamap_pars_fragment = \"#ifdef USE_ALPHAMAP\\n\\tuniform sampler2D alphaMap;\\n#endif\";\n\nvar alphatest_fragment = \"#ifdef ALPHATEST\\n\\tif ( diffuseColor.a < ALPHATEST ) discard;\\n#endif\";\n\nvar aomap_fragment = \"#ifdef USE_AOMAP\\n\\tfloat ambientOcclusion = ( texture2D( aoMap, vUv2 ).r - 1.0 ) * aoMapIntensity + 1.0;\\n\\treflectedLight.indirectDiffuse *= ambientOcclusion;\\n\\t#if defined( USE_ENVMAP ) && defined( STANDARD )\\n\\t\\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\\n\\t\\treflectedLight.indirectSpecular *= computeSpecularOcclusion( dotNV, ambientOcclusion, material.specularRoughness );\\n\\t#endif\\n#endif\";\n\nvar aomap_pars_fragment = \"#ifdef USE_AOMAP\\n\\tuniform sampler2D aoMap;\\n\\tuniform float aoMapIntensity;\\n#endif\";\n\nvar begin_vertex = \"vec3 transformed = vec3( position );\";\n\nvar beginnormal_vertex = \"vec3 objectNormal = vec3( normal );\\n#ifdef USE_TANGENT\\n\\tvec3 objectTangent = vec3( tangent.xyz );\\n#endif\";\n\nvar bsdfs = \"vec2 integrateSpecularBRDF( const in float dotNV, const in float roughness ) {\\n\\tconst vec4 c0 = vec4( - 1, - 0.0275, - 0.572, 0.022 );\\n\\tconst vec4 c1 = vec4( 1, 0.0425, 1.04, - 0.04 );\\n\\tvec4 r = roughness * c0 + c1;\\n\\tfloat a004 = min( r.x * r.x, exp2( - 9.28 * dotNV ) ) * r.x + r.y;\\n\\treturn vec2( -1.04, 1.04 ) * a004 + r.zw;\\n}\\nfloat punctualLightIntensityToIrradianceFactor( const in float lightDistance, const in float cutoffDistance, const in float decayExponent ) {\\n#if defined ( PHYSICALLY_CORRECT_LIGHTS )\\n\\tfloat distanceFalloff = 1.0 / max( pow( lightDistance, decayExponent ), 0.01 );\\n\\tif( cutoffDistance > 0.0 ) {\\n\\t\\tdistanceFalloff *= pow2( saturate( 1.0 - pow4( lightDistance / cutoffDistance ) ) );\\n\\t}\\n\\treturn distanceFalloff;\\n#else\\n\\tif( cutoffDistance > 0.0 && decayExponent > 0.0 ) {\\n\\t\\treturn pow( saturate( -lightDistance / cutoffDistance + 1.0 ), decayExponent );\\n\\t}\\n\\treturn 1.0;\\n#endif\\n}\\nvec3 BRDF_Diffuse_Lambert( const in vec3 diffuseColor ) {\\n\\treturn RECIPROCAL_PI * diffuseColor;\\n}\\nvec3 F_Schlick( const in vec3 specularColor, const in float dotLH ) {\\n\\tfloat fresnel = exp2( ( -5.55473 * dotLH - 6.98316 ) * dotLH );\\n\\treturn ( 1.0 - specularColor ) * fresnel + specularColor;\\n}\\nvec3 F_Schlick_RoughnessDependent( const in vec3 F0, const in float dotNV, const in float roughness ) {\\n\\tfloat fresnel = exp2( ( -5.55473 * dotNV - 6.98316 ) * dotNV );\\n\\tvec3 Fr = max( vec3( 1.0 - roughness ), F0 ) - F0;\\n\\treturn Fr * fresnel + F0;\\n}\\nfloat G_GGX_Smith( const in float alpha, const in float dotNL, const in float dotNV ) {\\n\\tfloat a2 = pow2( alpha );\\n\\tfloat gl = dotNL + sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\\n\\tfloat gv = dotNV + sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\\n\\treturn 1.0 / ( gl * gv );\\n}\\nfloat G_GGX_SmithCorrelated( const in float alpha, const in float dotNL, const in float dotNV ) {\\n\\tfloat a2 = pow2( alpha );\\n\\tfloat gv = dotNL * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\\n\\tfloat gl = dotNV * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\\n\\treturn 0.5 / max( gv + gl, EPSILON );\\n}\\nfloat D_GGX( const in float alpha, const in float dotNH ) {\\n\\tfloat a2 = pow2( alpha );\\n\\tfloat denom = pow2( dotNH ) * ( a2 - 1.0 ) + 1.0;\\n\\treturn RECIPROCAL_PI * a2 / pow2( denom );\\n}\\nvec3 BRDF_Specular_GGX( const in IncidentLight incidentLight, const in vec3 viewDir, const in vec3 normal, const in vec3 specularColor, const in float roughness ) {\\n\\tfloat alpha = pow2( roughness );\\n\\tvec3 halfDir = normalize( incidentLight.direction + viewDir );\\n\\tfloat dotNL = saturate( dot( normal, incidentLight.direction ) );\\n\\tfloat dotNV = saturate( dot( normal, viewDir ) );\\n\\tfloat dotNH = saturate( dot( normal, halfDir ) );\\n\\tfloat dotLH = saturate( dot( incidentLight.direction, halfDir ) );\\n\\tvec3 F = F_Schlick( specularColor, dotLH );\\n\\tfloat G = G_GGX_SmithCorrelated( alpha, dotNL, dotNV );\\n\\tfloat D = D_GGX( alpha, dotNH );\\n\\treturn F * ( G * D );\\n}\\nvec2 LTC_Uv( const in vec3 N, const in vec3 V, const in float roughness ) {\\n\\tconst float LUT_SIZE = 64.0;\\n\\tconst float LUT_SCALE = ( LUT_SIZE - 1.0 ) / LUT_SIZE;\\n\\tconst float LUT_BIAS = 0.5 / LUT_SIZE;\\n\\tfloat dotNV = saturate( dot( N, V ) );\\n\\tvec2 uv = vec2( roughness, sqrt( 1.0 - dotNV ) );\\n\\tuv = uv * LUT_SCALE + LUT_BIAS;\\n\\treturn uv;\\n}\\nfloat LTC_ClippedSphereFormFactor( const in vec3 f ) {\\n\\tfloat l = length( f );\\n\\treturn max( ( l * l + f.z ) / ( l + 1.0 ), 0.0 );\\n}\\nvec3 LTC_EdgeVectorFormFactor( const in vec3 v1, const in vec3 v2 ) {\\n\\tfloat x = dot( v1, v2 );\\n\\tfloat y = abs( x );\\n\\tfloat a = 0.8543985 + ( 0.4965155 + 0.0145206 * y ) * y;\\n\\tfloat b = 3.4175940 + ( 4.1616724 + y ) * y;\\n\\tfloat v = a / b;\\n\\tfloat theta_sintheta = ( x > 0.0 ) ? v : 0.5 * inversesqrt( max( 1.0 - x * x, 1e-7 ) ) - v;\\n\\treturn cross( v1, v2 ) * theta_sintheta;\\n}\\nvec3 LTC_Evaluate( const in vec3 N, const in vec3 V, const in vec3 P, const in mat3 mInv, const in vec3 rectCoords[ 4 ] ) {\\n\\tvec3 v1 = rectCoords[ 1 ] - rectCoords[ 0 ];\\n\\tvec3 v2 = rectCoords[ 3 ] - rectCoords[ 0 ];\\n\\tvec3 lightNormal = cross( v1, v2 );\\n\\tif( dot( lightNormal, P - rectCoords[ 0 ] ) < 0.0 ) return vec3( 0.0 );\\n\\tvec3 T1, T2;\\n\\tT1 = normalize( V - N * dot( V, N ) );\\n\\tT2 = - cross( N, T1 );\\n\\tmat3 mat = mInv * transposeMat3( mat3( T1, T2, N ) );\\n\\tvec3 coords[ 4 ];\\n\\tcoords[ 0 ] = mat * ( rectCoords[ 0 ] - P );\\n\\tcoords[ 1 ] = mat * ( rectCoords[ 1 ] - P );\\n\\tcoords[ 2 ] = mat * ( rectCoords[ 2 ] - P );\\n\\tcoords[ 3 ] = mat * ( rectCoords[ 3 ] - P );\\n\\tcoords[ 0 ] = normalize( coords[ 0 ] );\\n\\tcoords[ 1 ] = normalize( coords[ 1 ] );\\n\\tcoords[ 2 ] = normalize( coords[ 2 ] );\\n\\tcoords[ 3 ] = normalize( coords[ 3 ] );\\n\\tvec3 vectorFormFactor = vec3( 0.0 );\\n\\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 0 ], coords[ 1 ] );\\n\\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 1 ], coords[ 2 ] );\\n\\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 2 ], coords[ 3 ] );\\n\\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 3 ], coords[ 0 ] );\\n\\tfloat result = LTC_ClippedSphereFormFactor( vectorFormFactor );\\n\\treturn vec3( result );\\n}\\nvec3 BRDF_Specular_GGX_Environment( const in vec3 viewDir, const in vec3 normal, const in vec3 specularColor, const in float roughness ) {\\n\\tfloat dotNV = saturate( dot( normal, viewDir ) );\\n\\tvec2 brdf = integrateSpecularBRDF( dotNV, roughness );\\n\\treturn specularColor * brdf.x + brdf.y;\\n}\\nvoid BRDF_Specular_Multiscattering_Environment( const in GeometricContext geometry, const in vec3 specularColor, const in float roughness, inout vec3 singleScatter, inout vec3 multiScatter ) {\\n\\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\\n\\tvec3 F = F_Schlick_RoughnessDependent( specularColor, dotNV, roughness );\\n\\tvec2 brdf = integrateSpecularBRDF( dotNV, roughness );\\n\\tvec3 FssEss = F * brdf.x + brdf.y;\\n\\tfloat Ess = brdf.x + brdf.y;\\n\\tfloat Ems = 1.0 - Ess;\\n\\tvec3 Favg = specularColor + ( 1.0 - specularColor ) * 0.047619;\\tvec3 Fms = FssEss * Favg / ( 1.0 - Ems * Favg );\\n\\tsingleScatter += FssEss;\\n\\tmultiScatter += Fms * Ems;\\n}\\nfloat G_BlinnPhong_Implicit( ) {\\n\\treturn 0.25;\\n}\\nfloat D_BlinnPhong( const in float shininess, const in float dotNH ) {\\n\\treturn RECIPROCAL_PI * ( shininess * 0.5 + 1.0 ) * pow( dotNH, shininess );\\n}\\nvec3 BRDF_Specular_BlinnPhong( const in IncidentLight incidentLight, const in GeometricContext geometry, const in vec3 specularColor, const in float shininess ) {\\n\\tvec3 halfDir = normalize( incidentLight.direction + geometry.viewDir );\\n\\tfloat dotNH = saturate( dot( geometry.normal, halfDir ) );\\n\\tfloat dotLH = saturate( dot( incidentLight.direction, halfDir ) );\\n\\tvec3 F = F_Schlick( specularColor, dotLH );\\n\\tfloat G = G_BlinnPhong_Implicit( );\\n\\tfloat D = D_BlinnPhong( shininess, dotNH );\\n\\treturn F * ( G * D );\\n}\\nfloat GGXRoughnessToBlinnExponent( const in float ggxRoughness ) {\\n\\treturn ( 2.0 / pow2( ggxRoughness + 0.0001 ) - 2.0 );\\n}\\nfloat BlinnExponentToGGXRoughness( const in float blinnExponent ) {\\n\\treturn sqrt( 2.0 / ( blinnExponent + 2.0 ) );\\n}\\n#if defined( USE_SHEEN )\\nfloat D_Charlie(float roughness, float NoH) {\\n\\tfloat invAlpha = 1.0 / roughness;\\n\\tfloat cos2h = NoH * NoH;\\n\\tfloat sin2h = max(1.0 - cos2h, 0.0078125);\\treturn (2.0 + invAlpha) * pow(sin2h, invAlpha * 0.5) / (2.0 * PI);\\n}\\nfloat V_Neubelt(float NoV, float NoL) {\\n\\treturn saturate(1.0 / (4.0 * (NoL + NoV - NoL * NoV)));\\n}\\nvec3 BRDF_Specular_Sheen( const in float roughness, const in vec3 L, const in GeometricContext geometry, vec3 specularColor ) {\\n\\tvec3 N = geometry.normal;\\n\\tvec3 V = geometry.viewDir;\\n\\tvec3 H = normalize( V + L );\\n\\tfloat dotNH = saturate( dot( N, H ) );\\n\\treturn specularColor * D_Charlie( roughness, dotNH ) * V_Neubelt( dot(N, V), dot(N, L) );\\n}\\n#endif\";\n\nvar bumpmap_pars_fragment = \"#ifdef USE_BUMPMAP\\n\\tuniform sampler2D bumpMap;\\n\\tuniform float bumpScale;\\n\\tvec2 dHdxy_fwd() {\\n\\t\\tvec2 dSTdx = dFdx( vUv );\\n\\t\\tvec2 dSTdy = dFdy( vUv );\\n\\t\\tfloat Hll = bumpScale * texture2D( bumpMap, vUv ).x;\\n\\t\\tfloat dBx = bumpScale * texture2D( bumpMap, vUv + dSTdx ).x - Hll;\\n\\t\\tfloat dBy = bumpScale * texture2D( bumpMap, vUv + dSTdy ).x - Hll;\\n\\t\\treturn vec2( dBx, dBy );\\n\\t}\\n\\tvec3 perturbNormalArb( vec3 surf_pos, vec3 surf_norm, vec2 dHdxy ) {\\n\\t\\tvec3 vSigmaX = vec3( dFdx( surf_pos.x ), dFdx( surf_pos.y ), dFdx( surf_pos.z ) );\\n\\t\\tvec3 vSigmaY = vec3( dFdy( surf_pos.x ), dFdy( surf_pos.y ), dFdy( surf_pos.z ) );\\n\\t\\tvec3 vN = surf_norm;\\n\\t\\tvec3 R1 = cross( vSigmaY, vN );\\n\\t\\tvec3 R2 = cross( vN, vSigmaX );\\n\\t\\tfloat fDet = dot( vSigmaX, R1 );\\n\\t\\tfDet *= ( float( gl_FrontFacing ) * 2.0 - 1.0 );\\n\\t\\tvec3 vGrad = sign( fDet ) * ( dHdxy.x * R1 + dHdxy.y * R2 );\\n\\t\\treturn normalize( abs( fDet ) * surf_norm - vGrad );\\n\\t}\\n#endif\";\n\nvar clipping_planes_fragment = \"#if NUM_CLIPPING_PLANES > 0\\n\\tvec4 plane;\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < UNION_CLIPPING_PLANES; i ++ ) {\\n\\t\\tplane = clippingPlanes[ i ];\\n\\t\\tif ( dot( vClipPosition, plane.xyz ) > plane.w ) discard;\\n\\t}\\n\\t#pragma unroll_loop_end\\n\\t#if UNION_CLIPPING_PLANES < NUM_CLIPPING_PLANES\\n\\t\\tbool clipped = true;\\n\\t\\t#pragma unroll_loop_start\\n\\t\\tfor ( int i = UNION_CLIPPING_PLANES; i < NUM_CLIPPING_PLANES; i ++ ) {\\n\\t\\t\\tplane = clippingPlanes[ i ];\\n\\t\\t\\tclipped = ( dot( vClipPosition, plane.xyz ) > plane.w ) && clipped;\\n\\t\\t}\\n\\t\\t#pragma unroll_loop_end\\n\\t\\tif ( clipped ) discard;\\n\\t#endif\\n#endif\";\n\nvar clipping_planes_pars_fragment = \"#if NUM_CLIPPING_PLANES > 0\\n\\tvarying vec3 vClipPosition;\\n\\tuniform vec4 clippingPlanes[ NUM_CLIPPING_PLANES ];\\n#endif\";\n\nvar clipping_planes_pars_vertex = \"#if NUM_CLIPPING_PLANES > 0\\n\\tvarying vec3 vClipPosition;\\n#endif\";\n\nvar clipping_planes_vertex = \"#if NUM_CLIPPING_PLANES > 0\\n\\tvClipPosition = - mvPosition.xyz;\\n#endif\";\n\nvar color_fragment = \"#ifdef USE_COLOR\\n\\tdiffuseColor.rgb *= vColor;\\n#endif\";\n\nvar color_pars_fragment = \"#ifdef USE_COLOR\\n\\tvarying vec3 vColor;\\n#endif\";\n\nvar color_pars_vertex = \"#if defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR )\\n\\tvarying vec3 vColor;\\n#endif\";\n\nvar color_vertex = \"#if defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR )\\n\\tvColor = vec3( 1.0 );\\n#endif\\n#ifdef USE_COLOR\\n\\tvColor.xyz *= color.xyz;\\n#endif\\n#ifdef USE_INSTANCING_COLOR\\n\\tvColor.xyz *= instanceColor.xyz;\\n#endif\";\n\nvar common = \"#define PI 3.141592653589793\\n#define PI2 6.283185307179586\\n#define PI_HALF 1.5707963267948966\\n#define RECIPROCAL_PI 0.3183098861837907\\n#define RECIPROCAL_PI2 0.15915494309189535\\n#define EPSILON 1e-6\\n#ifndef saturate\\n#define saturate(a) clamp( a, 0.0, 1.0 )\\n#endif\\n#define whiteComplement(a) ( 1.0 - saturate( a ) )\\nfloat pow2( const in float x ) { return x*x; }\\nfloat pow3( const in float x ) { return x*x*x; }\\nfloat pow4( const in float x ) { float x2 = x*x; return x2*x2; }\\nfloat average( const in vec3 color ) { return dot( color, vec3( 0.3333 ) ); }\\nhighp float rand( const in vec2 uv ) {\\n\\tconst highp float a = 12.9898, b = 78.233, c = 43758.5453;\\n\\thighp float dt = dot( uv.xy, vec2( a,b ) ), sn = mod( dt, PI );\\n\\treturn fract(sin(sn) * c);\\n}\\n#ifdef HIGH_PRECISION\\n\\tfloat precisionSafeLength( vec3 v ) { return length( v ); }\\n#else\\n\\tfloat max3( vec3 v ) { return max( max( v.x, v.y ), v.z ); }\\n\\tfloat precisionSafeLength( vec3 v ) {\\n\\t\\tfloat maxComponent = max3( abs( v ) );\\n\\t\\treturn length( v / maxComponent ) * maxComponent;\\n\\t}\\n#endif\\nstruct IncidentLight {\\n\\tvec3 color;\\n\\tvec3 direction;\\n\\tbool visible;\\n};\\nstruct ReflectedLight {\\n\\tvec3 directDiffuse;\\n\\tvec3 directSpecular;\\n\\tvec3 indirectDiffuse;\\n\\tvec3 indirectSpecular;\\n};\\nstruct GeometricContext {\\n\\tvec3 position;\\n\\tvec3 normal;\\n\\tvec3 viewDir;\\n#ifdef CLEARCOAT\\n\\tvec3 clearcoatNormal;\\n#endif\\n};\\nvec3 transformDirection( in vec3 dir, in mat4 matrix ) {\\n\\treturn normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );\\n}\\nvec3 inverseTransformDirection( in vec3 dir, in mat4 matrix ) {\\n\\treturn normalize( ( vec4( dir, 0.0 ) * matrix ).xyz );\\n}\\nvec3 projectOnPlane(in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {\\n\\tfloat distance = dot( planeNormal, point - pointOnPlane );\\n\\treturn - distance * planeNormal + point;\\n}\\nfloat sideOfPlane( in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {\\n\\treturn sign( dot( point - pointOnPlane, planeNormal ) );\\n}\\nvec3 linePlaneIntersect( in vec3 pointOnLine, in vec3 lineDirection, in vec3 pointOnPlane, in vec3 planeNormal ) {\\n\\treturn lineDirection * ( dot( planeNormal, pointOnPlane - pointOnLine ) / dot( planeNormal, lineDirection ) ) + pointOnLine;\\n}\\nmat3 transposeMat3( const in mat3 m ) {\\n\\tmat3 tmp;\\n\\ttmp[ 0 ] = vec3( m[ 0 ].x, m[ 1 ].x, m[ 2 ].x );\\n\\ttmp[ 1 ] = vec3( m[ 0 ].y, m[ 1 ].y, m[ 2 ].y );\\n\\ttmp[ 2 ] = vec3( m[ 0 ].z, m[ 1 ].z, m[ 2 ].z );\\n\\treturn tmp;\\n}\\nfloat linearToRelativeLuminance( const in vec3 color ) {\\n\\tvec3 weights = vec3( 0.2126, 0.7152, 0.0722 );\\n\\treturn dot( weights, color.rgb );\\n}\\nbool isPerspectiveMatrix( mat4 m ) {\\n\\treturn m[ 2 ][ 3 ] == - 1.0;\\n}\\nvec2 equirectUv( in vec3 dir ) {\\n\\tfloat u = atan( dir.z, dir.x ) * RECIPROCAL_PI2 + 0.5;\\n\\tfloat v = asin( clamp( dir.y, - 1.0, 1.0 ) ) * RECIPROCAL_PI + 0.5;\\n\\treturn vec2( u, v );\\n}\";\n\nvar cube_uv_reflection_fragment = \"#ifdef ENVMAP_TYPE_CUBE_UV\\n\\t#define cubeUV_maxMipLevel 8.0\\n\\t#define cubeUV_minMipLevel 4.0\\n\\t#define cubeUV_maxTileSize 256.0\\n\\t#define cubeUV_minTileSize 16.0\\n\\tfloat getFace( vec3 direction ) {\\n\\t\\tvec3 absDirection = abs( direction );\\n\\t\\tfloat face = - 1.0;\\n\\t\\tif ( absDirection.x > absDirection.z ) {\\n\\t\\t\\tif ( absDirection.x > absDirection.y )\\n\\t\\t\\t\\tface = direction.x > 0.0 ? 0.0 : 3.0;\\n\\t\\t\\telse\\n\\t\\t\\t\\tface = direction.y > 0.0 ? 1.0 : 4.0;\\n\\t\\t} else {\\n\\t\\t\\tif ( absDirection.z > absDirection.y )\\n\\t\\t\\t\\tface = direction.z > 0.0 ? 2.0 : 5.0;\\n\\t\\t\\telse\\n\\t\\t\\t\\tface = direction.y > 0.0 ? 1.0 : 4.0;\\n\\t\\t}\\n\\t\\treturn face;\\n\\t}\\n\\tvec2 getUV( vec3 direction, float face ) {\\n\\t\\tvec2 uv;\\n\\t\\tif ( face == 0.0 ) {\\n\\t\\t\\tuv = vec2( direction.z, direction.y ) / abs( direction.x );\\n\\t\\t} else if ( face == 1.0 ) {\\n\\t\\t\\tuv = vec2( - direction.x, - direction.z ) / abs( direction.y );\\n\\t\\t} else if ( face == 2.0 ) {\\n\\t\\t\\tuv = vec2( - direction.x, direction.y ) / abs( direction.z );\\n\\t\\t} else if ( face == 3.0 ) {\\n\\t\\t\\tuv = vec2( - direction.z, direction.y ) / abs( direction.x );\\n\\t\\t} else if ( face == 4.0 ) {\\n\\t\\t\\tuv = vec2( - direction.x, direction.z ) / abs( direction.y );\\n\\t\\t} else {\\n\\t\\t\\tuv = vec2( direction.x, direction.y ) / abs( direction.z );\\n\\t\\t}\\n\\t\\treturn 0.5 * ( uv + 1.0 );\\n\\t}\\n\\tvec3 bilinearCubeUV( sampler2D envMap, vec3 direction, float mipInt ) {\\n\\t\\tfloat face = getFace( direction );\\n\\t\\tfloat filterInt = max( cubeUV_minMipLevel - mipInt, 0.0 );\\n\\t\\tmipInt = max( mipInt, cubeUV_minMipLevel );\\n\\t\\tfloat faceSize = exp2( mipInt );\\n\\t\\tfloat texelSize = 1.0 / ( 3.0 * cubeUV_maxTileSize );\\n\\t\\tvec2 uv = getUV( direction, face ) * ( faceSize - 1.0 );\\n\\t\\tvec2 f = fract( uv );\\n\\t\\tuv += 0.5 - f;\\n\\t\\tif ( face > 2.0 ) {\\n\\t\\t\\tuv.y += faceSize;\\n\\t\\t\\tface -= 3.0;\\n\\t\\t}\\n\\t\\tuv.x += face * faceSize;\\n\\t\\tif ( mipInt < cubeUV_maxMipLevel ) {\\n\\t\\t\\tuv.y += 2.0 * cubeUV_maxTileSize;\\n\\t\\t}\\n\\t\\tuv.y += filterInt * 2.0 * cubeUV_minTileSize;\\n\\t\\tuv.x += 3.0 * max( 0.0, cubeUV_maxTileSize - 2.0 * faceSize );\\n\\t\\tuv *= texelSize;\\n\\t\\tvec3 tl = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\\n\\t\\tuv.x += texelSize;\\n\\t\\tvec3 tr = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\\n\\t\\tuv.y += texelSize;\\n\\t\\tvec3 br = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\\n\\t\\tuv.x -= texelSize;\\n\\t\\tvec3 bl = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\\n\\t\\tvec3 tm = mix( tl, tr, f.x );\\n\\t\\tvec3 bm = mix( bl, br, f.x );\\n\\t\\treturn mix( tm, bm, f.y );\\n\\t}\\n\\t#define r0 1.0\\n\\t#define v0 0.339\\n\\t#define m0 - 2.0\\n\\t#define r1 0.8\\n\\t#define v1 0.276\\n\\t#define m1 - 1.0\\n\\t#define r4 0.4\\n\\t#define v4 0.046\\n\\t#define m4 2.0\\n\\t#define r5 0.305\\n\\t#define v5 0.016\\n\\t#define m5 3.0\\n\\t#define r6 0.21\\n\\t#define v6 0.0038\\n\\t#define m6 4.0\\n\\tfloat roughnessToMip( float roughness ) {\\n\\t\\tfloat mip = 0.0;\\n\\t\\tif ( roughness >= r1 ) {\\n\\t\\t\\tmip = ( r0 - roughness ) * ( m1 - m0 ) / ( r0 - r1 ) + m0;\\n\\t\\t} else if ( roughness >= r4 ) {\\n\\t\\t\\tmip = ( r1 - roughness ) * ( m4 - m1 ) / ( r1 - r4 ) + m1;\\n\\t\\t} else if ( roughness >= r5 ) {\\n\\t\\t\\tmip = ( r4 - roughness ) * ( m5 - m4 ) / ( r4 - r5 ) + m4;\\n\\t\\t} else if ( roughness >= r6 ) {\\n\\t\\t\\tmip = ( r5 - roughness ) * ( m6 - m5 ) / ( r5 - r6 ) + m5;\\n\\t\\t} else {\\n\\t\\t\\tmip = - 2.0 * log2( 1.16 * roughness );\\t\\t}\\n\\t\\treturn mip;\\n\\t}\\n\\tvec4 textureCubeUV( sampler2D envMap, vec3 sampleDir, float roughness ) {\\n\\t\\tfloat mip = clamp( roughnessToMip( roughness ), m0, cubeUV_maxMipLevel );\\n\\t\\tfloat mipF = fract( mip );\\n\\t\\tfloat mipInt = floor( mip );\\n\\t\\tvec3 color0 = bilinearCubeUV( envMap, sampleDir, mipInt );\\n\\t\\tif ( mipF == 0.0 ) {\\n\\t\\t\\treturn vec4( color0, 1.0 );\\n\\t\\t} else {\\n\\t\\t\\tvec3 color1 = bilinearCubeUV( envMap, sampleDir, mipInt + 1.0 );\\n\\t\\t\\treturn vec4( mix( color0, color1, mipF ), 1.0 );\\n\\t\\t}\\n\\t}\\n#endif\";\n\nvar defaultnormal_vertex = \"vec3 transformedNormal = objectNormal;\\n#ifdef USE_INSTANCING\\n\\tmat3 m = mat3( instanceMatrix );\\n\\ttransformedNormal /= vec3( dot( m[ 0 ], m[ 0 ] ), dot( m[ 1 ], m[ 1 ] ), dot( m[ 2 ], m[ 2 ] ) );\\n\\ttransformedNormal = m * transformedNormal;\\n#endif\\ntransformedNormal = normalMatrix * transformedNormal;\\n#ifdef FLIP_SIDED\\n\\ttransformedNormal = - transformedNormal;\\n#endif\\n#ifdef USE_TANGENT\\n\\tvec3 transformedTangent = ( modelViewMatrix * vec4( objectTangent, 0.0 ) ).xyz;\\n\\t#ifdef FLIP_SIDED\\n\\t\\ttransformedTangent = - transformedTangent;\\n\\t#endif\\n#endif\";\n\nvar displacementmap_pars_vertex = \"#ifdef USE_DISPLACEMENTMAP\\n\\tuniform sampler2D displacementMap;\\n\\tuniform float displacementScale;\\n\\tuniform float displacementBias;\\n#endif\";\n\nvar displacementmap_vertex = \"#ifdef USE_DISPLACEMENTMAP\\n\\ttransformed += normalize( objectNormal ) * ( texture2D( displacementMap, vUv ).x * displacementScale + displacementBias );\\n#endif\";\n\nvar emissivemap_fragment = \"#ifdef USE_EMISSIVEMAP\\n\\tvec4 emissiveColor = texture2D( emissiveMap, vUv );\\n\\temissiveColor.rgb = emissiveMapTexelToLinear( emissiveColor ).rgb;\\n\\ttotalEmissiveRadiance *= emissiveColor.rgb;\\n#endif\";\n\nvar emissivemap_pars_fragment = \"#ifdef USE_EMISSIVEMAP\\n\\tuniform sampler2D emissiveMap;\\n#endif\";\n\nvar encodings_fragment = \"gl_FragColor = linearToOutputTexel( gl_FragColor );\";\n\nvar encodings_pars_fragment = \"\\nvec4 LinearToLinear( in vec4 value ) {\\n\\treturn value;\\n}\\nvec4 GammaToLinear( in vec4 value, in float gammaFactor ) {\\n\\treturn vec4( pow( value.rgb, vec3( gammaFactor ) ), value.a );\\n}\\nvec4 LinearToGamma( in vec4 value, in float gammaFactor ) {\\n\\treturn vec4( pow( value.rgb, vec3( 1.0 / gammaFactor ) ), value.a );\\n}\\nvec4 sRGBToLinear( in vec4 value ) {\\n\\treturn vec4( mix( pow( value.rgb * 0.9478672986 + vec3( 0.0521327014 ), vec3( 2.4 ) ), value.rgb * 0.0773993808, vec3( lessThanEqual( value.rgb, vec3( 0.04045 ) ) ) ), value.a );\\n}\\nvec4 LinearTosRGB( in vec4 value ) {\\n\\treturn vec4( mix( pow( value.rgb, vec3( 0.41666 ) ) * 1.055 - vec3( 0.055 ), value.rgb * 12.92, vec3( lessThanEqual( value.rgb, vec3( 0.0031308 ) ) ) ), value.a );\\n}\\nvec4 RGBEToLinear( in vec4 value ) {\\n\\treturn vec4( value.rgb * exp2( value.a * 255.0 - 128.0 ), 1.0 );\\n}\\nvec4 LinearToRGBE( in vec4 value ) {\\n\\tfloat maxComponent = max( max( value.r, value.g ), value.b );\\n\\tfloat fExp = clamp( ceil( log2( maxComponent ) ), -128.0, 127.0 );\\n\\treturn vec4( value.rgb / exp2( fExp ), ( fExp + 128.0 ) / 255.0 );\\n}\\nvec4 RGBMToLinear( in vec4 value, in float maxRange ) {\\n\\treturn vec4( value.rgb * value.a * maxRange, 1.0 );\\n}\\nvec4 LinearToRGBM( in vec4 value, in float maxRange ) {\\n\\tfloat maxRGB = max( value.r, max( value.g, value.b ) );\\n\\tfloat M = clamp( maxRGB / maxRange, 0.0, 1.0 );\\n\\tM = ceil( M * 255.0 ) / 255.0;\\n\\treturn vec4( value.rgb / ( M * maxRange ), M );\\n}\\nvec4 RGBDToLinear( in vec4 value, in float maxRange ) {\\n\\treturn vec4( value.rgb * ( ( maxRange / 255.0 ) / value.a ), 1.0 );\\n}\\nvec4 LinearToRGBD( in vec4 value, in float maxRange ) {\\n\\tfloat maxRGB = max( value.r, max( value.g, value.b ) );\\n\\tfloat D = max( maxRange / maxRGB, 1.0 );\\n\\tD = clamp( floor( D ) / 255.0, 0.0, 1.0 );\\n\\treturn vec4( value.rgb * ( D * ( 255.0 / maxRange ) ), D );\\n}\\nconst mat3 cLogLuvM = mat3( 0.2209, 0.3390, 0.4184, 0.1138, 0.6780, 0.7319, 0.0102, 0.1130, 0.2969 );\\nvec4 LinearToLogLuv( in vec4 value ) {\\n\\tvec3 Xp_Y_XYZp = cLogLuvM * value.rgb;\\n\\tXp_Y_XYZp = max( Xp_Y_XYZp, vec3( 1e-6, 1e-6, 1e-6 ) );\\n\\tvec4 vResult;\\n\\tvResult.xy = Xp_Y_XYZp.xy / Xp_Y_XYZp.z;\\n\\tfloat Le = 2.0 * log2(Xp_Y_XYZp.y) + 127.0;\\n\\tvResult.w = fract( Le );\\n\\tvResult.z = ( Le - ( floor( vResult.w * 255.0 ) ) / 255.0 ) / 255.0;\\n\\treturn vResult;\\n}\\nconst mat3 cLogLuvInverseM = mat3( 6.0014, -2.7008, -1.7996, -1.3320, 3.1029, -5.7721, 0.3008, -1.0882, 5.6268 );\\nvec4 LogLuvToLinear( in vec4 value ) {\\n\\tfloat Le = value.z * 255.0 + value.w;\\n\\tvec3 Xp_Y_XYZp;\\n\\tXp_Y_XYZp.y = exp2( ( Le - 127.0 ) / 2.0 );\\n\\tXp_Y_XYZp.z = Xp_Y_XYZp.y / value.y;\\n\\tXp_Y_XYZp.x = value.x * Xp_Y_XYZp.z;\\n\\tvec3 vRGB = cLogLuvInverseM * Xp_Y_XYZp.rgb;\\n\\treturn vec4( max( vRGB, 0.0 ), 1.0 );\\n}\";\n\nvar envmap_fragment = \"#ifdef USE_ENVMAP\\n\\t#ifdef ENV_WORLDPOS\\n\\t\\tvec3 cameraToFrag;\\n\\t\\tif ( isOrthographic ) {\\n\\t\\t\\tcameraToFrag = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\\n\\t\\t} else {\\n\\t\\t\\tcameraToFrag = normalize( vWorldPosition - cameraPosition );\\n\\t\\t}\\n\\t\\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\\n\\t\\t#ifdef ENVMAP_MODE_REFLECTION\\n\\t\\t\\tvec3 reflectVec = reflect( cameraToFrag, worldNormal );\\n\\t\\t#else\\n\\t\\t\\tvec3 reflectVec = refract( cameraToFrag, worldNormal, refractionRatio );\\n\\t\\t#endif\\n\\t#else\\n\\t\\tvec3 reflectVec = vReflect;\\n\\t#endif\\n\\t#ifdef ENVMAP_TYPE_CUBE\\n\\t\\tvec4 envColor = textureCube( envMap, vec3( flipEnvMap * reflectVec.x, reflectVec.yz ) );\\n\\t#elif defined( ENVMAP_TYPE_CUBE_UV )\\n\\t\\tvec4 envColor = textureCubeUV( envMap, reflectVec, 0.0 );\\n\\t#else\\n\\t\\tvec4 envColor = vec4( 0.0 );\\n\\t#endif\\n\\t#ifndef ENVMAP_TYPE_CUBE_UV\\n\\t\\tenvColor = envMapTexelToLinear( envColor );\\n\\t#endif\\n\\t#ifdef ENVMAP_BLENDING_MULTIPLY\\n\\t\\toutgoingLight = mix( outgoingLight, outgoingLight * envColor.xyz, specularStrength * reflectivity );\\n\\t#elif defined( ENVMAP_BLENDING_MIX )\\n\\t\\toutgoingLight = mix( outgoingLight, envColor.xyz, specularStrength * reflectivity );\\n\\t#elif defined( ENVMAP_BLENDING_ADD )\\n\\t\\toutgoingLight += envColor.xyz * specularStrength * reflectivity;\\n\\t#endif\\n#endif\";\n\nvar envmap_common_pars_fragment = \"#ifdef USE_ENVMAP\\n\\tuniform float envMapIntensity;\\n\\tuniform float flipEnvMap;\\n\\tuniform int maxMipLevel;\\n\\t#ifdef ENVMAP_TYPE_CUBE\\n\\t\\tuniform samplerCube envMap;\\n\\t#else\\n\\t\\tuniform sampler2D envMap;\\n\\t#endif\\n\\t\\n#endif\";\n\nvar envmap_pars_fragment = \"#ifdef USE_ENVMAP\\n\\tuniform float reflectivity;\\n\\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG )\\n\\t\\t#define ENV_WORLDPOS\\n\\t#endif\\n\\t#ifdef ENV_WORLDPOS\\n\\t\\tvarying vec3 vWorldPosition;\\n\\t\\tuniform float refractionRatio;\\n\\t#else\\n\\t\\tvarying vec3 vReflect;\\n\\t#endif\\n#endif\";\n\nvar envmap_pars_vertex = \"#ifdef USE_ENVMAP\\n\\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) ||defined( PHONG )\\n\\t\\t#define ENV_WORLDPOS\\n\\t#endif\\n\\t#ifdef ENV_WORLDPOS\\n\\t\\t\\n\\t\\tvarying vec3 vWorldPosition;\\n\\t#else\\n\\t\\tvarying vec3 vReflect;\\n\\t\\tuniform float refractionRatio;\\n\\t#endif\\n#endif\";\n\nvar envmap_vertex = \"#ifdef USE_ENVMAP\\n\\t#ifdef ENV_WORLDPOS\\n\\t\\tvWorldPosition = worldPosition.xyz;\\n\\t#else\\n\\t\\tvec3 cameraToVertex;\\n\\t\\tif ( isOrthographic ) {\\n\\t\\t\\tcameraToVertex = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\\n\\t\\t} else {\\n\\t\\t\\tcameraToVertex = normalize( worldPosition.xyz - cameraPosition );\\n\\t\\t}\\n\\t\\tvec3 worldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\\n\\t\\t#ifdef ENVMAP_MODE_REFLECTION\\n\\t\\t\\tvReflect = reflect( cameraToVertex, worldNormal );\\n\\t\\t#else\\n\\t\\t\\tvReflect = refract( cameraToVertex, worldNormal, refractionRatio );\\n\\t\\t#endif\\n\\t#endif\\n#endif\";\n\nvar fog_vertex = \"#ifdef USE_FOG\\n\\tfogDepth = - mvPosition.z;\\n#endif\";\n\nvar fog_pars_vertex = \"#ifdef USE_FOG\\n\\tvarying float fogDepth;\\n#endif\";\n\nvar fog_fragment = \"#ifdef USE_FOG\\n\\t#ifdef FOG_EXP2\\n\\t\\tfloat fogFactor = 1.0 - exp( - fogDensity * fogDensity * fogDepth * fogDepth );\\n\\t#else\\n\\t\\tfloat fogFactor = smoothstep( fogNear, fogFar, fogDepth );\\n\\t#endif\\n\\tgl_FragColor.rgb = mix( gl_FragColor.rgb, fogColor, fogFactor );\\n#endif\";\n\nvar fog_pars_fragment = \"#ifdef USE_FOG\\n\\tuniform vec3 fogColor;\\n\\tvarying float fogDepth;\\n\\t#ifdef FOG_EXP2\\n\\t\\tuniform float fogDensity;\\n\\t#else\\n\\t\\tuniform float fogNear;\\n\\t\\tuniform float fogFar;\\n\\t#endif\\n#endif\";\n\nvar gradientmap_pars_fragment = \"#ifdef USE_GRADIENTMAP\\n\\tuniform sampler2D gradientMap;\\n#endif\\nvec3 getGradientIrradiance( vec3 normal, vec3 lightDirection ) {\\n\\tfloat dotNL = dot( normal, lightDirection );\\n\\tvec2 coord = vec2( dotNL * 0.5 + 0.5, 0.0 );\\n\\t#ifdef USE_GRADIENTMAP\\n\\t\\treturn texture2D( gradientMap, coord ).rgb;\\n\\t#else\\n\\t\\treturn ( coord.x < 0.7 ) ? vec3( 0.7 ) : vec3( 1.0 );\\n\\t#endif\\n}\";\n\nvar lightmap_fragment = \"#ifdef USE_LIGHTMAP\\n\\tvec4 lightMapTexel= texture2D( lightMap, vUv2 );\\n\\treflectedLight.indirectDiffuse += PI * lightMapTexelToLinear( lightMapTexel ).rgb * lightMapIntensity;\\n#endif\";\n\nvar lightmap_pars_fragment = \"#ifdef USE_LIGHTMAP\\n\\tuniform sampler2D lightMap;\\n\\tuniform float lightMapIntensity;\\n#endif\";\n\nvar lights_lambert_vertex = \"vec3 diffuse = vec3( 1.0 );\\nGeometricContext geometry;\\ngeometry.position = mvPosition.xyz;\\ngeometry.normal = normalize( transformedNormal );\\ngeometry.viewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( -mvPosition.xyz );\\nGeometricContext backGeometry;\\nbackGeometry.position = geometry.position;\\nbackGeometry.normal = -geometry.normal;\\nbackGeometry.viewDir = geometry.viewDir;\\nvLightFront = vec3( 0.0 );\\nvIndirectFront = vec3( 0.0 );\\n#ifdef DOUBLE_SIDED\\n\\tvLightBack = vec3( 0.0 );\\n\\tvIndirectBack = vec3( 0.0 );\\n#endif\\nIncidentLight directLight;\\nfloat dotNL;\\nvec3 directLightColor_Diffuse;\\nvIndirectFront += getAmbientLightIrradiance( ambientLightColor );\\nvIndirectFront += getLightProbeIrradiance( lightProbe, geometry );\\n#ifdef DOUBLE_SIDED\\n\\tvIndirectBack += getAmbientLightIrradiance( ambientLightColor );\\n\\tvIndirectBack += getLightProbeIrradiance( lightProbe, backGeometry );\\n#endif\\n#if NUM_POINT_LIGHTS > 0\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\\n\\t\\tgetPointDirectLightIrradiance( pointLights[ i ], geometry, directLight );\\n\\t\\tdotNL = dot( geometry.normal, directLight.direction );\\n\\t\\tdirectLightColor_Diffuse = PI * directLight.color;\\n\\t\\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\\n\\t\\t#ifdef DOUBLE_SIDED\\n\\t\\t\\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\\n\\t\\t#endif\\n\\t}\\n\\t#pragma unroll_loop_end\\n#endif\\n#if NUM_SPOT_LIGHTS > 0\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\\n\\t\\tgetSpotDirectLightIrradiance( spotLights[ i ], geometry, directLight );\\n\\t\\tdotNL = dot( geometry.normal, directLight.direction );\\n\\t\\tdirectLightColor_Diffuse = PI * directLight.color;\\n\\t\\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\\n\\t\\t#ifdef DOUBLE_SIDED\\n\\t\\t\\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\\n\\t\\t#endif\\n\\t}\\n\\t#pragma unroll_loop_end\\n#endif\\n#if NUM_DIR_LIGHTS > 0\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\\n\\t\\tgetDirectionalDirectLightIrradiance( directionalLights[ i ], geometry, directLight );\\n\\t\\tdotNL = dot( geometry.normal, directLight.direction );\\n\\t\\tdirectLightColor_Diffuse = PI * directLight.color;\\n\\t\\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\\n\\t\\t#ifdef DOUBLE_SIDED\\n\\t\\t\\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\\n\\t\\t#endif\\n\\t}\\n\\t#pragma unroll_loop_end\\n#endif\\n#if NUM_HEMI_LIGHTS > 0\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\\n\\t\\tvIndirectFront += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry );\\n\\t\\t#ifdef DOUBLE_SIDED\\n\\t\\t\\tvIndirectBack += getHemisphereLightIrradiance( hemisphereLights[ i ], backGeometry );\\n\\t\\t#endif\\n\\t}\\n\\t#pragma unroll_loop_end\\n#endif\";\n\nvar lights_pars_begin = \"uniform bool receiveShadow;\\nuniform vec3 ambientLightColor;\\nuniform vec3 lightProbe[ 9 ];\\nvec3 shGetIrradianceAt( in vec3 normal, in vec3 shCoefficients[ 9 ] ) {\\n\\tfloat x = normal.x, y = normal.y, z = normal.z;\\n\\tvec3 result = shCoefficients[ 0 ] * 0.886227;\\n\\tresult += shCoefficients[ 1 ] * 2.0 * 0.511664 * y;\\n\\tresult += shCoefficients[ 2 ] * 2.0 * 0.511664 * z;\\n\\tresult += shCoefficients[ 3 ] * 2.0 * 0.511664 * x;\\n\\tresult += shCoefficients[ 4 ] * 2.0 * 0.429043 * x * y;\\n\\tresult += shCoefficients[ 5 ] * 2.0 * 0.429043 * y * z;\\n\\tresult += shCoefficients[ 6 ] * ( 0.743125 * z * z - 0.247708 );\\n\\tresult += shCoefficients[ 7 ] * 2.0 * 0.429043 * x * z;\\n\\tresult += shCoefficients[ 8 ] * 0.429043 * ( x * x - y * y );\\n\\treturn result;\\n}\\nvec3 getLightProbeIrradiance( const in vec3 lightProbe[ 9 ], const in GeometricContext geometry ) {\\n\\tvec3 worldNormal = inverseTransformDirection( geometry.normal, viewMatrix );\\n\\tvec3 irradiance = shGetIrradianceAt( worldNormal, lightProbe );\\n\\treturn irradiance;\\n}\\nvec3 getAmbientLightIrradiance( const in vec3 ambientLightColor ) {\\n\\tvec3 irradiance = ambientLightColor;\\n\\t#ifndef PHYSICALLY_CORRECT_LIGHTS\\n\\t\\tirradiance *= PI;\\n\\t#endif\\n\\treturn irradiance;\\n}\\n#if NUM_DIR_LIGHTS > 0\\n\\tstruct DirectionalLight {\\n\\t\\tvec3 direction;\\n\\t\\tvec3 color;\\n\\t};\\n\\tuniform DirectionalLight directionalLights[ NUM_DIR_LIGHTS ];\\n\\tvoid getDirectionalDirectLightIrradiance( const in DirectionalLight directionalLight, const in GeometricContext geometry, out IncidentLight directLight ) {\\n\\t\\tdirectLight.color = directionalLight.color;\\n\\t\\tdirectLight.direction = directionalLight.direction;\\n\\t\\tdirectLight.visible = true;\\n\\t}\\n#endif\\n#if NUM_POINT_LIGHTS > 0\\n\\tstruct PointLight {\\n\\t\\tvec3 position;\\n\\t\\tvec3 color;\\n\\t\\tfloat distance;\\n\\t\\tfloat decay;\\n\\t};\\n\\tuniform PointLight pointLights[ NUM_POINT_LIGHTS ];\\n\\tvoid getPointDirectLightIrradiance( const in PointLight pointLight, const in GeometricContext geometry, out IncidentLight directLight ) {\\n\\t\\tvec3 lVector = pointLight.position - geometry.position;\\n\\t\\tdirectLight.direction = normalize( lVector );\\n\\t\\tfloat lightDistance = length( lVector );\\n\\t\\tdirectLight.color = pointLight.color;\\n\\t\\tdirectLight.color *= punctualLightIntensityToIrradianceFactor( lightDistance, pointLight.distance, pointLight.decay );\\n\\t\\tdirectLight.visible = ( directLight.color != vec3( 0.0 ) );\\n\\t}\\n#endif\\n#if NUM_SPOT_LIGHTS > 0\\n\\tstruct SpotLight {\\n\\t\\tvec3 position;\\n\\t\\tvec3 direction;\\n\\t\\tvec3 color;\\n\\t\\tfloat distance;\\n\\t\\tfloat decay;\\n\\t\\tfloat coneCos;\\n\\t\\tfloat penumbraCos;\\n\\t};\\n\\tuniform SpotLight spotLights[ NUM_SPOT_LIGHTS ];\\n\\tvoid getSpotDirectLightIrradiance( const in SpotLight spotLight, const in GeometricContext geometry, out IncidentLight directLight ) {\\n\\t\\tvec3 lVector = spotLight.position - geometry.position;\\n\\t\\tdirectLight.direction = normalize( lVector );\\n\\t\\tfloat lightDistance = length( lVector );\\n\\t\\tfloat angleCos = dot( directLight.direction, spotLight.direction );\\n\\t\\tif ( angleCos > spotLight.coneCos ) {\\n\\t\\t\\tfloat spotEffect = smoothstep( spotLight.coneCos, spotLight.penumbraCos, angleCos );\\n\\t\\t\\tdirectLight.color = spotLight.color;\\n\\t\\t\\tdirectLight.color *= spotEffect * punctualLightIntensityToIrradianceFactor( lightDistance, spotLight.distance, spotLight.decay );\\n\\t\\t\\tdirectLight.visible = true;\\n\\t\\t} else {\\n\\t\\t\\tdirectLight.color = vec3( 0.0 );\\n\\t\\t\\tdirectLight.visible = false;\\n\\t\\t}\\n\\t}\\n#endif\\n#if NUM_RECT_AREA_LIGHTS > 0\\n\\tstruct RectAreaLight {\\n\\t\\tvec3 color;\\n\\t\\tvec3 position;\\n\\t\\tvec3 halfWidth;\\n\\t\\tvec3 halfHeight;\\n\\t};\\n\\tuniform sampler2D ltc_1;\\tuniform sampler2D ltc_2;\\n\\tuniform RectAreaLight rectAreaLights[ NUM_RECT_AREA_LIGHTS ];\\n#endif\\n#if NUM_HEMI_LIGHTS > 0\\n\\tstruct HemisphereLight {\\n\\t\\tvec3 direction;\\n\\t\\tvec3 skyColor;\\n\\t\\tvec3 groundColor;\\n\\t};\\n\\tuniform HemisphereLight hemisphereLights[ NUM_HEMI_LIGHTS ];\\n\\tvec3 getHemisphereLightIrradiance( const in HemisphereLight hemiLight, const in GeometricContext geometry ) {\\n\\t\\tfloat dotNL = dot( geometry.normal, hemiLight.direction );\\n\\t\\tfloat hemiDiffuseWeight = 0.5 * dotNL + 0.5;\\n\\t\\tvec3 irradiance = mix( hemiLight.groundColor, hemiLight.skyColor, hemiDiffuseWeight );\\n\\t\\t#ifndef PHYSICALLY_CORRECT_LIGHTS\\n\\t\\t\\tirradiance *= PI;\\n\\t\\t#endif\\n\\t\\treturn irradiance;\\n\\t}\\n#endif\";\n\nvar envmap_physical_pars_fragment = \"#if defined( USE_ENVMAP )\\n\\t#ifdef ENVMAP_MODE_REFRACTION\\n\\t\\tuniform float refractionRatio;\\n\\t#endif\\n\\tvec3 getLightProbeIndirectIrradiance( const in GeometricContext geometry, const in int maxMIPLevel ) {\\n\\t\\tvec3 worldNormal = inverseTransformDirection( geometry.normal, viewMatrix );\\n\\t\\t#ifdef ENVMAP_TYPE_CUBE\\n\\t\\t\\tvec3 queryVec = vec3( flipEnvMap * worldNormal.x, worldNormal.yz );\\n\\t\\t\\t#ifdef TEXTURE_LOD_EXT\\n\\t\\t\\t\\tvec4 envMapColor = textureCubeLodEXT( envMap, queryVec, float( maxMIPLevel ) );\\n\\t\\t\\t#else\\n\\t\\t\\t\\tvec4 envMapColor = textureCube( envMap, queryVec, float( maxMIPLevel ) );\\n\\t\\t\\t#endif\\n\\t\\t\\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\\n\\t\\t#elif defined( ENVMAP_TYPE_CUBE_UV )\\n\\t\\t\\tvec4 envMapColor = textureCubeUV( envMap, worldNormal, 1.0 );\\n\\t\\t#else\\n\\t\\t\\tvec4 envMapColor = vec4( 0.0 );\\n\\t\\t#endif\\n\\t\\treturn PI * envMapColor.rgb * envMapIntensity;\\n\\t}\\n\\tfloat getSpecularMIPLevel( const in float roughness, const in int maxMIPLevel ) {\\n\\t\\tfloat maxMIPLevelScalar = float( maxMIPLevel );\\n\\t\\tfloat sigma = PI * roughness * roughness / ( 1.0 + roughness );\\n\\t\\tfloat desiredMIPLevel = maxMIPLevelScalar + log2( sigma );\\n\\t\\treturn clamp( desiredMIPLevel, 0.0, maxMIPLevelScalar );\\n\\t}\\n\\tvec3 getLightProbeIndirectRadiance( const in vec3 viewDir, const in vec3 normal, const in float roughness, const in int maxMIPLevel ) {\\n\\t\\t#ifdef ENVMAP_MODE_REFLECTION\\n\\t\\t\\tvec3 reflectVec = reflect( -viewDir, normal );\\n\\t\\t\\treflectVec = normalize( mix( reflectVec, normal, roughness * roughness) );\\n\\t\\t#else\\n\\t\\t\\tvec3 reflectVec = refract( -viewDir, normal, refractionRatio );\\n\\t\\t#endif\\n\\t\\treflectVec = inverseTransformDirection( reflectVec, viewMatrix );\\n\\t\\tfloat specularMIPLevel = getSpecularMIPLevel( roughness, maxMIPLevel );\\n\\t\\t#ifdef ENVMAP_TYPE_CUBE\\n\\t\\t\\tvec3 queryReflectVec = vec3( flipEnvMap * reflectVec.x, reflectVec.yz );\\n\\t\\t\\t#ifdef TEXTURE_LOD_EXT\\n\\t\\t\\t\\tvec4 envMapColor = textureCubeLodEXT( envMap, queryReflectVec, specularMIPLevel );\\n\\t\\t\\t#else\\n\\t\\t\\t\\tvec4 envMapColor = textureCube( envMap, queryReflectVec, specularMIPLevel );\\n\\t\\t\\t#endif\\n\\t\\t\\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\\n\\t\\t#elif defined( ENVMAP_TYPE_CUBE_UV )\\n\\t\\t\\tvec4 envMapColor = textureCubeUV( envMap, reflectVec, roughness );\\n\\t\\t#endif\\n\\t\\treturn envMapColor.rgb * envMapIntensity;\\n\\t}\\n#endif\";\n\nvar lights_toon_fragment = \"ToonMaterial material;\\nmaterial.diffuseColor = diffuseColor.rgb;\";\n\nvar lights_toon_pars_fragment = \"varying vec3 vViewPosition;\\n#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n#endif\\nstruct ToonMaterial {\\n\\tvec3 diffuseColor;\\n};\\nvoid RE_Direct_Toon( const in IncidentLight directLight, const in GeometricContext geometry, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\\n\\tvec3 irradiance = getGradientIrradiance( geometry.normal, directLight.direction ) * directLight.color;\\n\\t#ifndef PHYSICALLY_CORRECT_LIGHTS\\n\\t\\tirradiance *= PI;\\n\\t#endif\\n\\treflectedLight.directDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\\n}\\nvoid RE_IndirectDiffuse_Toon( const in vec3 irradiance, const in GeometricContext geometry, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\\n\\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\\n}\\n#define RE_Direct\\t\\t\\t\\tRE_Direct_Toon\\n#define RE_IndirectDiffuse\\t\\tRE_IndirectDiffuse_Toon\\n#define Material_LightProbeLOD( material )\\t(0)\";\n\nvar lights_phong_fragment = \"BlinnPhongMaterial material;\\nmaterial.diffuseColor = diffuseColor.rgb;\\nmaterial.specularColor = specular;\\nmaterial.specularShininess = shininess;\\nmaterial.specularStrength = specularStrength;\";\n\nvar lights_phong_pars_fragment = \"varying vec3 vViewPosition;\\n#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n#endif\\nstruct BlinnPhongMaterial {\\n\\tvec3 diffuseColor;\\n\\tvec3 specularColor;\\n\\tfloat specularShininess;\\n\\tfloat specularStrength;\\n};\\nvoid RE_Direct_BlinnPhong( const in IncidentLight directLight, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\\n\\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\\n\\tvec3 irradiance = dotNL * directLight.color;\\n\\t#ifndef PHYSICALLY_CORRECT_LIGHTS\\n\\t\\tirradiance *= PI;\\n\\t#endif\\n\\treflectedLight.directDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\\n\\treflectedLight.directSpecular += irradiance * BRDF_Specular_BlinnPhong( directLight, geometry, material.specularColor, material.specularShininess ) * material.specularStrength;\\n}\\nvoid RE_IndirectDiffuse_BlinnPhong( const in vec3 irradiance, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\\n\\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\\n}\\n#define RE_Direct\\t\\t\\t\\tRE_Direct_BlinnPhong\\n#define RE_IndirectDiffuse\\t\\tRE_IndirectDiffuse_BlinnPhong\\n#define Material_LightProbeLOD( material )\\t(0)\";\n\nvar lights_physical_fragment = \"PhysicalMaterial material;\\nmaterial.diffuseColor = diffuseColor.rgb * ( 1.0 - metalnessFactor );\\nvec3 dxy = max( abs( dFdx( geometryNormal ) ), abs( dFdy( geometryNormal ) ) );\\nfloat geometryRoughness = max( max( dxy.x, dxy.y ), dxy.z );\\nmaterial.specularRoughness = max( roughnessFactor, 0.0525 );material.specularRoughness += geometryRoughness;\\nmaterial.specularRoughness = min( material.specularRoughness, 1.0 );\\n#ifdef REFLECTIVITY\\n\\tmaterial.specularColor = mix( vec3( MAXIMUM_SPECULAR_COEFFICIENT * pow2( reflectivity ) ), diffuseColor.rgb, metalnessFactor );\\n#else\\n\\tmaterial.specularColor = mix( vec3( DEFAULT_SPECULAR_COEFFICIENT ), diffuseColor.rgb, metalnessFactor );\\n#endif\\n#ifdef CLEARCOAT\\n\\tmaterial.clearcoat = clearcoat;\\n\\tmaterial.clearcoatRoughness = clearcoatRoughness;\\n\\t#ifdef USE_CLEARCOATMAP\\n\\t\\tmaterial.clearcoat *= texture2D( clearcoatMap, vUv ).x;\\n\\t#endif\\n\\t#ifdef USE_CLEARCOAT_ROUGHNESSMAP\\n\\t\\tmaterial.clearcoatRoughness *= texture2D( clearcoatRoughnessMap, vUv ).y;\\n\\t#endif\\n\\tmaterial.clearcoat = saturate( material.clearcoat );\\tmaterial.clearcoatRoughness = max( material.clearcoatRoughness, 0.0525 );\\n\\tmaterial.clearcoatRoughness += geometryRoughness;\\n\\tmaterial.clearcoatRoughness = min( material.clearcoatRoughness, 1.0 );\\n#endif\\n#ifdef USE_SHEEN\\n\\tmaterial.sheenColor = sheen;\\n#endif\";\n\nvar lights_physical_pars_fragment = \"struct PhysicalMaterial {\\n\\tvec3 diffuseColor;\\n\\tfloat specularRoughness;\\n\\tvec3 specularColor;\\n#ifdef CLEARCOAT\\n\\tfloat clearcoat;\\n\\tfloat clearcoatRoughness;\\n#endif\\n#ifdef USE_SHEEN\\n\\tvec3 sheenColor;\\n#endif\\n};\\n#define MAXIMUM_SPECULAR_COEFFICIENT 0.16\\n#define DEFAULT_SPECULAR_COEFFICIENT 0.04\\nfloat clearcoatDHRApprox( const in float roughness, const in float dotNL ) {\\n\\treturn DEFAULT_SPECULAR_COEFFICIENT + ( 1.0 - DEFAULT_SPECULAR_COEFFICIENT ) * ( pow( 1.0 - dotNL, 5.0 ) * pow( 1.0 - roughness, 2.0 ) );\\n}\\n#if NUM_RECT_AREA_LIGHTS > 0\\n\\tvoid RE_Direct_RectArea_Physical( const in RectAreaLight rectAreaLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\\n\\t\\tvec3 normal = geometry.normal;\\n\\t\\tvec3 viewDir = geometry.viewDir;\\n\\t\\tvec3 position = geometry.position;\\n\\t\\tvec3 lightPos = rectAreaLight.position;\\n\\t\\tvec3 halfWidth = rectAreaLight.halfWidth;\\n\\t\\tvec3 halfHeight = rectAreaLight.halfHeight;\\n\\t\\tvec3 lightColor = rectAreaLight.color;\\n\\t\\tfloat roughness = material.specularRoughness;\\n\\t\\tvec3 rectCoords[ 4 ];\\n\\t\\trectCoords[ 0 ] = lightPos + halfWidth - halfHeight;\\t\\trectCoords[ 1 ] = lightPos - halfWidth - halfHeight;\\n\\t\\trectCoords[ 2 ] = lightPos - halfWidth + halfHeight;\\n\\t\\trectCoords[ 3 ] = lightPos + halfWidth + halfHeight;\\n\\t\\tvec2 uv = LTC_Uv( normal, viewDir, roughness );\\n\\t\\tvec4 t1 = texture2D( ltc_1, uv );\\n\\t\\tvec4 t2 = texture2D( ltc_2, uv );\\n\\t\\tmat3 mInv = mat3(\\n\\t\\t\\tvec3( t1.x, 0, t1.y ),\\n\\t\\t\\tvec3(    0, 1,    0 ),\\n\\t\\t\\tvec3( t1.z, 0, t1.w )\\n\\t\\t);\\n\\t\\tvec3 fresnel = ( material.specularColor * t2.x + ( vec3( 1.0 ) - material.specularColor ) * t2.y );\\n\\t\\treflectedLight.directSpecular += lightColor * fresnel * LTC_Evaluate( normal, viewDir, position, mInv, rectCoords );\\n\\t\\treflectedLight.directDiffuse += lightColor * material.diffuseColor * LTC_Evaluate( normal, viewDir, position, mat3( 1.0 ), rectCoords );\\n\\t}\\n#endif\\nvoid RE_Direct_Physical( const in IncidentLight directLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\\n\\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\\n\\tvec3 irradiance = dotNL * directLight.color;\\n\\t#ifndef PHYSICALLY_CORRECT_LIGHTS\\n\\t\\tirradiance *= PI;\\n\\t#endif\\n\\t#ifdef CLEARCOAT\\n\\t\\tfloat ccDotNL = saturate( dot( geometry.clearcoatNormal, directLight.direction ) );\\n\\t\\tvec3 ccIrradiance = ccDotNL * directLight.color;\\n\\t\\t#ifndef PHYSICALLY_CORRECT_LIGHTS\\n\\t\\t\\tccIrradiance *= PI;\\n\\t\\t#endif\\n\\t\\tfloat clearcoatDHR = material.clearcoat * clearcoatDHRApprox( material.clearcoatRoughness, ccDotNL );\\n\\t\\treflectedLight.directSpecular += ccIrradiance * material.clearcoat * BRDF_Specular_GGX( directLight, geometry.viewDir, geometry.clearcoatNormal, vec3( DEFAULT_SPECULAR_COEFFICIENT ), material.clearcoatRoughness );\\n\\t#else\\n\\t\\tfloat clearcoatDHR = 0.0;\\n\\t#endif\\n\\t#ifdef USE_SHEEN\\n\\t\\treflectedLight.directSpecular += ( 1.0 - clearcoatDHR ) * irradiance * BRDF_Specular_Sheen(\\n\\t\\t\\tmaterial.specularRoughness,\\n\\t\\t\\tdirectLight.direction,\\n\\t\\t\\tgeometry,\\n\\t\\t\\tmaterial.sheenColor\\n\\t\\t);\\n\\t#else\\n\\t\\treflectedLight.directSpecular += ( 1.0 - clearcoatDHR ) * irradiance * BRDF_Specular_GGX( directLight, geometry.viewDir, geometry.normal, material.specularColor, material.specularRoughness);\\n\\t#endif\\n\\treflectedLight.directDiffuse += ( 1.0 - clearcoatDHR ) * irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\\n}\\nvoid RE_IndirectDiffuse_Physical( const in vec3 irradiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\\n\\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\\n}\\nvoid RE_IndirectSpecular_Physical( const in vec3 radiance, const in vec3 irradiance, const in vec3 clearcoatRadiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight) {\\n\\t#ifdef CLEARCOAT\\n\\t\\tfloat ccDotNV = saturate( dot( geometry.clearcoatNormal, geometry.viewDir ) );\\n\\t\\treflectedLight.indirectSpecular += clearcoatRadiance * material.clearcoat * BRDF_Specular_GGX_Environment( geometry.viewDir, geometry.clearcoatNormal, vec3( DEFAULT_SPECULAR_COEFFICIENT ), material.clearcoatRoughness );\\n\\t\\tfloat ccDotNL = ccDotNV;\\n\\t\\tfloat clearcoatDHR = material.clearcoat * clearcoatDHRApprox( material.clearcoatRoughness, ccDotNL );\\n\\t#else\\n\\t\\tfloat clearcoatDHR = 0.0;\\n\\t#endif\\n\\tfloat clearcoatInv = 1.0 - clearcoatDHR;\\n\\tvec3 singleScattering = vec3( 0.0 );\\n\\tvec3 multiScattering = vec3( 0.0 );\\n\\tvec3 cosineWeightedIrradiance = irradiance * RECIPROCAL_PI;\\n\\tBRDF_Specular_Multiscattering_Environment( geometry, material.specularColor, material.specularRoughness, singleScattering, multiScattering );\\n\\tvec3 diffuse = material.diffuseColor * ( 1.0 - ( singleScattering + multiScattering ) );\\n\\treflectedLight.indirectSpecular += clearcoatInv * radiance * singleScattering;\\n\\treflectedLight.indirectSpecular += multiScattering * cosineWeightedIrradiance;\\n\\treflectedLight.indirectDiffuse += diffuse * cosineWeightedIrradiance;\\n}\\n#define RE_Direct\\t\\t\\t\\tRE_Direct_Physical\\n#define RE_Direct_RectArea\\t\\tRE_Direct_RectArea_Physical\\n#define RE_IndirectDiffuse\\t\\tRE_IndirectDiffuse_Physical\\n#define RE_IndirectSpecular\\t\\tRE_IndirectSpecular_Physical\\nfloat computeSpecularOcclusion( const in float dotNV, const in float ambientOcclusion, const in float roughness ) {\\n\\treturn saturate( pow( dotNV + ambientOcclusion, exp2( - 16.0 * roughness - 1.0 ) ) - 1.0 + ambientOcclusion );\\n}\";\n\nvar lights_fragment_begin = \"\\nGeometricContext geometry;\\ngeometry.position = - vViewPosition;\\ngeometry.normal = normal;\\ngeometry.viewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( vViewPosition );\\n#ifdef CLEARCOAT\\n\\tgeometry.clearcoatNormal = clearcoatNormal;\\n#endif\\nIncidentLight directLight;\\n#if ( NUM_POINT_LIGHTS > 0 ) && defined( RE_Direct )\\n\\tPointLight pointLight;\\n\\t#if defined( USE_SHADOWMAP ) && NUM_POINT_LIGHT_SHADOWS > 0\\n\\tPointLightShadow pointLightShadow;\\n\\t#endif\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\\n\\t\\tpointLight = pointLights[ i ];\\n\\t\\tgetPointDirectLightIrradiance( pointLight, geometry, directLight );\\n\\t\\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_POINT_LIGHT_SHADOWS )\\n\\t\\tpointLightShadow = pointLightShadows[ i ];\\n\\t\\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getPointShadow( pointShadowMap[ i ], pointLightShadow.shadowMapSize, pointLightShadow.shadowBias, pointLightShadow.shadowRadius, vPointShadowCoord[ i ], pointLightShadow.shadowCameraNear, pointLightShadow.shadowCameraFar ) : 1.0;\\n\\t\\t#endif\\n\\t\\tRE_Direct( directLight, geometry, material, reflectedLight );\\n\\t}\\n\\t#pragma unroll_loop_end\\n#endif\\n#if ( NUM_SPOT_LIGHTS > 0 ) && defined( RE_Direct )\\n\\tSpotLight spotLight;\\n\\t#if defined( USE_SHADOWMAP ) && NUM_SPOT_LIGHT_SHADOWS > 0\\n\\tSpotLightShadow spotLightShadow;\\n\\t#endif\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\\n\\t\\tspotLight = spotLights[ i ];\\n\\t\\tgetSpotDirectLightIrradiance( spotLight, geometry, directLight );\\n\\t\\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )\\n\\t\\tspotLightShadow = spotLightShadows[ i ];\\n\\t\\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getShadow( spotShadowMap[ i ], spotLightShadow.shadowMapSize, spotLightShadow.shadowBias, spotLightShadow.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\\n\\t\\t#endif\\n\\t\\tRE_Direct( directLight, geometry, material, reflectedLight );\\n\\t}\\n\\t#pragma unroll_loop_end\\n#endif\\n#if ( NUM_DIR_LIGHTS > 0 ) && defined( RE_Direct )\\n\\tDirectionalLight directionalLight;\\n\\t#if defined( USE_SHADOWMAP ) && NUM_DIR_LIGHT_SHADOWS > 0\\n\\tDirectionalLightShadow directionalLightShadow;\\n\\t#endif\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\\n\\t\\tdirectionalLight = directionalLights[ i ];\\n\\t\\tgetDirectionalDirectLightIrradiance( directionalLight, geometry, directLight );\\n\\t\\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_DIR_LIGHT_SHADOWS )\\n\\t\\tdirectionalLightShadow = directionalLightShadows[ i ];\\n\\t\\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getShadow( directionalShadowMap[ i ], directionalLightShadow.shadowMapSize, directionalLightShadow.shadowBias, directionalLightShadow.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\\n\\t\\t#endif\\n\\t\\tRE_Direct( directLight, geometry, material, reflectedLight );\\n\\t}\\n\\t#pragma unroll_loop_end\\n#endif\\n#if ( NUM_RECT_AREA_LIGHTS > 0 ) && defined( RE_Direct_RectArea )\\n\\tRectAreaLight rectAreaLight;\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_RECT_AREA_LIGHTS; i ++ ) {\\n\\t\\trectAreaLight = rectAreaLights[ i ];\\n\\t\\tRE_Direct_RectArea( rectAreaLight, geometry, material, reflectedLight );\\n\\t}\\n\\t#pragma unroll_loop_end\\n#endif\\n#if defined( RE_IndirectDiffuse )\\n\\tvec3 iblIrradiance = vec3( 0.0 );\\n\\tvec3 irradiance = getAmbientLightIrradiance( ambientLightColor );\\n\\tirradiance += getLightProbeIrradiance( lightProbe, geometry );\\n\\t#if ( NUM_HEMI_LIGHTS > 0 )\\n\\t\\t#pragma unroll_loop_start\\n\\t\\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\\n\\t\\t\\tirradiance += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry );\\n\\t\\t}\\n\\t\\t#pragma unroll_loop_end\\n\\t#endif\\n#endif\\n#if defined( RE_IndirectSpecular )\\n\\tvec3 radiance = vec3( 0.0 );\\n\\tvec3 clearcoatRadiance = vec3( 0.0 );\\n#endif\";\n\nvar lights_fragment_maps = \"#if defined( RE_IndirectDiffuse )\\n\\t#ifdef USE_LIGHTMAP\\n\\t\\tvec4 lightMapTexel= texture2D( lightMap, vUv2 );\\n\\t\\tvec3 lightMapIrradiance = lightMapTexelToLinear( lightMapTexel ).rgb * lightMapIntensity;\\n\\t\\t#ifndef PHYSICALLY_CORRECT_LIGHTS\\n\\t\\t\\tlightMapIrradiance *= PI;\\n\\t\\t#endif\\n\\t\\tirradiance += lightMapIrradiance;\\n\\t#endif\\n\\t#if defined( USE_ENVMAP ) && defined( STANDARD ) && defined( ENVMAP_TYPE_CUBE_UV )\\n\\t\\tiblIrradiance += getLightProbeIndirectIrradiance( geometry, maxMipLevel );\\n\\t#endif\\n#endif\\n#if defined( USE_ENVMAP ) && defined( RE_IndirectSpecular )\\n\\tradiance += getLightProbeIndirectRadiance( geometry.viewDir, geometry.normal, material.specularRoughness, maxMipLevel );\\n\\t#ifdef CLEARCOAT\\n\\t\\tclearcoatRadiance += getLightProbeIndirectRadiance( geometry.viewDir, geometry.clearcoatNormal, material.clearcoatRoughness, maxMipLevel );\\n\\t#endif\\n#endif\";\n\nvar lights_fragment_end = \"#if defined( RE_IndirectDiffuse )\\n\\tRE_IndirectDiffuse( irradiance, geometry, material, reflectedLight );\\n#endif\\n#if defined( RE_IndirectSpecular )\\n\\tRE_IndirectSpecular( radiance, iblIrradiance, clearcoatRadiance, geometry, material, reflectedLight );\\n#endif\";\n\nvar logdepthbuf_fragment = \"#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\\n\\tgl_FragDepthEXT = vIsPerspective == 0.0 ? gl_FragCoord.z : log2( vFragDepth ) * logDepthBufFC * 0.5;\\n#endif\";\n\nvar logdepthbuf_pars_fragment = \"#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\\n\\tuniform float logDepthBufFC;\\n\\tvarying float vFragDepth;\\n\\tvarying float vIsPerspective;\\n#endif\";\n\nvar logdepthbuf_pars_vertex = \"#ifdef USE_LOGDEPTHBUF\\n\\t#ifdef USE_LOGDEPTHBUF_EXT\\n\\t\\tvarying float vFragDepth;\\n\\t\\tvarying float vIsPerspective;\\n\\t#else\\n\\t\\tuniform float logDepthBufFC;\\n\\t#endif\\n#endif\";\n\nvar logdepthbuf_vertex = \"#ifdef USE_LOGDEPTHBUF\\n\\t#ifdef USE_LOGDEPTHBUF_EXT\\n\\t\\tvFragDepth = 1.0 + gl_Position.w;\\n\\t\\tvIsPerspective = float( isPerspectiveMatrix( projectionMatrix ) );\\n\\t#else\\n\\t\\tif ( isPerspectiveMatrix( projectionMatrix ) ) {\\n\\t\\t\\tgl_Position.z = log2( max( EPSILON, gl_Position.w + 1.0 ) ) * logDepthBufFC - 1.0;\\n\\t\\t\\tgl_Position.z *= gl_Position.w;\\n\\t\\t}\\n\\t#endif\\n#endif\";\n\nvar map_fragment = \"#ifdef USE_MAP\\n\\tvec4 texelColor = texture2D( map, vUv );\\n\\ttexelColor = mapTexelToLinear( texelColor );\\n\\tdiffuseColor *= texelColor;\\n#endif\";\n\nvar map_pars_fragment = \"#ifdef USE_MAP\\n\\tuniform sampler2D map;\\n#endif\";\n\nvar map_particle_fragment = \"#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\\n\\tvec2 uv = ( uvTransform * vec3( gl_PointCoord.x, 1.0 - gl_PointCoord.y, 1 ) ).xy;\\n#endif\\n#ifdef USE_MAP\\n\\tvec4 mapTexel = texture2D( map, uv );\\n\\tdiffuseColor *= mapTexelToLinear( mapTexel );\\n#endif\\n#ifdef USE_ALPHAMAP\\n\\tdiffuseColor.a *= texture2D( alphaMap, uv ).g;\\n#endif\";\n\nvar map_particle_pars_fragment = \"#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\\n\\tuniform mat3 uvTransform;\\n#endif\\n#ifdef USE_MAP\\n\\tuniform sampler2D map;\\n#endif\\n#ifdef USE_ALPHAMAP\\n\\tuniform sampler2D alphaMap;\\n#endif\";\n\nvar metalnessmap_fragment = \"float metalnessFactor = metalness;\\n#ifdef USE_METALNESSMAP\\n\\tvec4 texelMetalness = texture2D( metalnessMap, vUv );\\n\\tmetalnessFactor *= texelMetalness.b;\\n#endif\";\n\nvar metalnessmap_pars_fragment = \"#ifdef USE_METALNESSMAP\\n\\tuniform sampler2D metalnessMap;\\n#endif\";\n\nvar morphnormal_vertex = \"#ifdef USE_MORPHNORMALS\\n\\tobjectNormal *= morphTargetBaseInfluence;\\n\\tobjectNormal += morphNormal0 * morphTargetInfluences[ 0 ];\\n\\tobjectNormal += morphNormal1 * morphTargetInfluences[ 1 ];\\n\\tobjectNormal += morphNormal2 * morphTargetInfluences[ 2 ];\\n\\tobjectNormal += morphNormal3 * morphTargetInfluences[ 3 ];\\n#endif\";\n\nvar morphtarget_pars_vertex = \"#ifdef USE_MORPHTARGETS\\n\\tuniform float morphTargetBaseInfluence;\\n\\t#ifndef USE_MORPHNORMALS\\n\\t\\tuniform float morphTargetInfluences[ 8 ];\\n\\t#else\\n\\t\\tuniform float morphTargetInfluences[ 4 ];\\n\\t#endif\\n#endif\";\n\nvar morphtarget_vertex = \"#ifdef USE_MORPHTARGETS\\n\\ttransformed *= morphTargetBaseInfluence;\\n\\ttransformed += morphTarget0 * morphTargetInfluences[ 0 ];\\n\\ttransformed += morphTarget1 * morphTargetInfluences[ 1 ];\\n\\ttransformed += morphTarget2 * morphTargetInfluences[ 2 ];\\n\\ttransformed += morphTarget3 * morphTargetInfluences[ 3 ];\\n\\t#ifndef USE_MORPHNORMALS\\n\\t\\ttransformed += morphTarget4 * morphTargetInfluences[ 4 ];\\n\\t\\ttransformed += morphTarget5 * morphTargetInfluences[ 5 ];\\n\\t\\ttransformed += morphTarget6 * morphTargetInfluences[ 6 ];\\n\\t\\ttransformed += morphTarget7 * morphTargetInfluences[ 7 ];\\n\\t#endif\\n#endif\";\n\nvar normal_fragment_begin = \"#ifdef FLAT_SHADED\\n\\tvec3 fdx = vec3( dFdx( vViewPosition.x ), dFdx( vViewPosition.y ), dFdx( vViewPosition.z ) );\\n\\tvec3 fdy = vec3( dFdy( vViewPosition.x ), dFdy( vViewPosition.y ), dFdy( vViewPosition.z ) );\\n\\tvec3 normal = normalize( cross( fdx, fdy ) );\\n#else\\n\\tvec3 normal = normalize( vNormal );\\n\\t#ifdef DOUBLE_SIDED\\n\\t\\tnormal = normal * ( float( gl_FrontFacing ) * 2.0 - 1.0 );\\n\\t#endif\\n\\t#ifdef USE_TANGENT\\n\\t\\tvec3 tangent = normalize( vTangent );\\n\\t\\tvec3 bitangent = normalize( vBitangent );\\n\\t\\t#ifdef DOUBLE_SIDED\\n\\t\\t\\ttangent = tangent * ( float( gl_FrontFacing ) * 2.0 - 1.0 );\\n\\t\\t\\tbitangent = bitangent * ( float( gl_FrontFacing ) * 2.0 - 1.0 );\\n\\t\\t#endif\\n\\t\\t#if defined( TANGENTSPACE_NORMALMAP ) || defined( USE_CLEARCOAT_NORMALMAP )\\n\\t\\t\\tmat3 vTBN = mat3( tangent, bitangent, normal );\\n\\t\\t#endif\\n\\t#endif\\n#endif\\nvec3 geometryNormal = normal;\";\n\nvar normal_fragment_maps = \"#ifdef OBJECTSPACE_NORMALMAP\\n\\tnormal = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\\n\\t#ifdef FLIP_SIDED\\n\\t\\tnormal = - normal;\\n\\t#endif\\n\\t#ifdef DOUBLE_SIDED\\n\\t\\tnormal = normal * ( float( gl_FrontFacing ) * 2.0 - 1.0 );\\n\\t#endif\\n\\tnormal = normalize( normalMatrix * normal );\\n#elif defined( TANGENTSPACE_NORMALMAP )\\n\\tvec3 mapN = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\\n\\tmapN.xy *= normalScale;\\n\\t#ifdef USE_TANGENT\\n\\t\\tnormal = normalize( vTBN * mapN );\\n\\t#else\\n\\t\\tnormal = perturbNormal2Arb( -vViewPosition, normal, mapN );\\n\\t#endif\\n#elif defined( USE_BUMPMAP )\\n\\tnormal = perturbNormalArb( -vViewPosition, normal, dHdxy_fwd() );\\n#endif\";\n\nvar normalmap_pars_fragment = \"#ifdef USE_NORMALMAP\\n\\tuniform sampler2D normalMap;\\n\\tuniform vec2 normalScale;\\n#endif\\n#ifdef OBJECTSPACE_NORMALMAP\\n\\tuniform mat3 normalMatrix;\\n#endif\\n#if ! defined ( USE_TANGENT ) && ( defined ( TANGENTSPACE_NORMALMAP ) || defined ( USE_CLEARCOAT_NORMALMAP ) )\\n\\tvec3 perturbNormal2Arb( vec3 eye_pos, vec3 surf_norm, vec3 mapN ) {\\n\\t\\tvec3 q0 = vec3( dFdx( eye_pos.x ), dFdx( eye_pos.y ), dFdx( eye_pos.z ) );\\n\\t\\tvec3 q1 = vec3( dFdy( eye_pos.x ), dFdy( eye_pos.y ), dFdy( eye_pos.z ) );\\n\\t\\tvec2 st0 = dFdx( vUv.st );\\n\\t\\tvec2 st1 = dFdy( vUv.st );\\n\\t\\tfloat scale = sign( st1.t * st0.s - st0.t * st1.s );\\n\\t\\tvec3 S = normalize( ( q0 * st1.t - q1 * st0.t ) * scale );\\n\\t\\tvec3 T = normalize( ( - q0 * st1.s + q1 * st0.s ) * scale );\\n\\t\\tvec3 N = normalize( surf_norm );\\n\\t\\tmat3 tsn = mat3( S, T, N );\\n\\t\\tmapN.xy *= ( float( gl_FrontFacing ) * 2.0 - 1.0 );\\n\\t\\treturn normalize( tsn * mapN );\\n\\t}\\n#endif\";\n\nvar clearcoat_normal_fragment_begin = \"#ifdef CLEARCOAT\\n\\tvec3 clearcoatNormal = geometryNormal;\\n#endif\";\n\nvar clearcoat_normal_fragment_maps = \"#ifdef USE_CLEARCOAT_NORMALMAP\\n\\tvec3 clearcoatMapN = texture2D( clearcoatNormalMap, vUv ).xyz * 2.0 - 1.0;\\n\\tclearcoatMapN.xy *= clearcoatNormalScale;\\n\\t#ifdef USE_TANGENT\\n\\t\\tclearcoatNormal = normalize( vTBN * clearcoatMapN );\\n\\t#else\\n\\t\\tclearcoatNormal = perturbNormal2Arb( - vViewPosition, clearcoatNormal, clearcoatMapN );\\n\\t#endif\\n#endif\";\n\nvar clearcoat_pars_fragment = \"#ifdef USE_CLEARCOATMAP\\n\\tuniform sampler2D clearcoatMap;\\n#endif\\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\\n\\tuniform sampler2D clearcoatRoughnessMap;\\n#endif\\n#ifdef USE_CLEARCOAT_NORMALMAP\\n\\tuniform sampler2D clearcoatNormalMap;\\n\\tuniform vec2 clearcoatNormalScale;\\n#endif\";\n\nvar packing = \"vec3 packNormalToRGB( const in vec3 normal ) {\\n\\treturn normalize( normal ) * 0.5 + 0.5;\\n}\\nvec3 unpackRGBToNormal( const in vec3 rgb ) {\\n\\treturn 2.0 * rgb.xyz - 1.0;\\n}\\nconst float PackUpscale = 256. / 255.;const float UnpackDownscale = 255. / 256.;\\nconst vec3 PackFactors = vec3( 256. * 256. * 256., 256. * 256., 256. );\\nconst vec4 UnpackFactors = UnpackDownscale / vec4( PackFactors, 1. );\\nconst float ShiftRight8 = 1. / 256.;\\nvec4 packDepthToRGBA( const in float v ) {\\n\\tvec4 r = vec4( fract( v * PackFactors ), v );\\n\\tr.yzw -= r.xyz * ShiftRight8;\\treturn r * PackUpscale;\\n}\\nfloat unpackRGBAToDepth( const in vec4 v ) {\\n\\treturn dot( v, UnpackFactors );\\n}\\nvec4 pack2HalfToRGBA( vec2 v ) {\\n\\tvec4 r = vec4( v.x, fract( v.x * 255.0 ), v.y, fract( v.y * 255.0 ));\\n\\treturn vec4( r.x - r.y / 255.0, r.y, r.z - r.w / 255.0, r.w);\\n}\\nvec2 unpackRGBATo2Half( vec4 v ) {\\n\\treturn vec2( v.x + ( v.y / 255.0 ), v.z + ( v.w / 255.0 ) );\\n}\\nfloat viewZToOrthographicDepth( const in float viewZ, const in float near, const in float far ) {\\n\\treturn ( viewZ + near ) / ( near - far );\\n}\\nfloat orthographicDepthToViewZ( const in float linearClipZ, const in float near, const in float far ) {\\n\\treturn linearClipZ * ( near - far ) - near;\\n}\\nfloat viewZToPerspectiveDepth( const in float viewZ, const in float near, const in float far ) {\\n\\treturn (( near + viewZ ) * far ) / (( far - near ) * viewZ );\\n}\\nfloat perspectiveDepthToViewZ( const in float invClipZ, const in float near, const in float far ) {\\n\\treturn ( near * far ) / ( ( far - near ) * invClipZ - far );\\n}\";\n\nvar premultiplied_alpha_fragment = \"#ifdef PREMULTIPLIED_ALPHA\\n\\tgl_FragColor.rgb *= gl_FragColor.a;\\n#endif\";\n\nvar project_vertex = \"vec4 mvPosition = vec4( transformed, 1.0 );\\n#ifdef USE_INSTANCING\\n\\tmvPosition = instanceMatrix * mvPosition;\\n#endif\\nmvPosition = modelViewMatrix * mvPosition;\\ngl_Position = projectionMatrix * mvPosition;\";\n\nvar dithering_fragment = \"#ifdef DITHERING\\n\\tgl_FragColor.rgb = dithering( gl_FragColor.rgb );\\n#endif\";\n\nvar dithering_pars_fragment = \"#ifdef DITHERING\\n\\tvec3 dithering( vec3 color ) {\\n\\t\\tfloat grid_position = rand( gl_FragCoord.xy );\\n\\t\\tvec3 dither_shift_RGB = vec3( 0.25 / 255.0, -0.25 / 255.0, 0.25 / 255.0 );\\n\\t\\tdither_shift_RGB = mix( 2.0 * dither_shift_RGB, -2.0 * dither_shift_RGB, grid_position );\\n\\t\\treturn color + dither_shift_RGB;\\n\\t}\\n#endif\";\n\nvar roughnessmap_fragment = \"float roughnessFactor = roughness;\\n#ifdef USE_ROUGHNESSMAP\\n\\tvec4 texelRoughness = texture2D( roughnessMap, vUv );\\n\\troughnessFactor *= texelRoughness.g;\\n#endif\";\n\nvar roughnessmap_pars_fragment = \"#ifdef USE_ROUGHNESSMAP\\n\\tuniform sampler2D roughnessMap;\\n#endif\";\n\nvar shadowmap_pars_fragment = \"#ifdef USE_SHADOWMAP\\n\\t#if NUM_DIR_LIGHT_SHADOWS > 0\\n\\t\\tuniform sampler2D directionalShadowMap[ NUM_DIR_LIGHT_SHADOWS ];\\n\\t\\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\\n\\t\\tstruct DirectionalLightShadow {\\n\\t\\t\\tfloat shadowBias;\\n\\t\\t\\tfloat shadowNormalBias;\\n\\t\\t\\tfloat shadowRadius;\\n\\t\\t\\tvec2 shadowMapSize;\\n\\t\\t};\\n\\t\\tuniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\\n\\t#endif\\n\\t#if NUM_SPOT_LIGHT_SHADOWS > 0\\n\\t\\tuniform sampler2D spotShadowMap[ NUM_SPOT_LIGHT_SHADOWS ];\\n\\t\\tvarying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHT_SHADOWS ];\\n\\t\\tstruct SpotLightShadow {\\n\\t\\t\\tfloat shadowBias;\\n\\t\\t\\tfloat shadowNormalBias;\\n\\t\\t\\tfloat shadowRadius;\\n\\t\\t\\tvec2 shadowMapSize;\\n\\t\\t};\\n\\t\\tuniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\\n\\t#endif\\n\\t#if NUM_POINT_LIGHT_SHADOWS > 0\\n\\t\\tuniform sampler2D pointShadowMap[ NUM_POINT_LIGHT_SHADOWS ];\\n\\t\\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\\n\\t\\tstruct PointLightShadow {\\n\\t\\t\\tfloat shadowBias;\\n\\t\\t\\tfloat shadowNormalBias;\\n\\t\\t\\tfloat shadowRadius;\\n\\t\\t\\tvec2 shadowMapSize;\\n\\t\\t\\tfloat shadowCameraNear;\\n\\t\\t\\tfloat shadowCameraFar;\\n\\t\\t};\\n\\t\\tuniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\\n\\t#endif\\n\\tfloat texture2DCompare( sampler2D depths, vec2 uv, float compare ) {\\n\\t\\treturn step( compare, unpackRGBAToDepth( texture2D( depths, uv ) ) );\\n\\t}\\n\\tvec2 texture2DDistribution( sampler2D shadow, vec2 uv ) {\\n\\t\\treturn unpackRGBATo2Half( texture2D( shadow, uv ) );\\n\\t}\\n\\tfloat VSMShadow (sampler2D shadow, vec2 uv, float compare ){\\n\\t\\tfloat occlusion = 1.0;\\n\\t\\tvec2 distribution = texture2DDistribution( shadow, uv );\\n\\t\\tfloat hard_shadow = step( compare , distribution.x );\\n\\t\\tif (hard_shadow != 1.0 ) {\\n\\t\\t\\tfloat distance = compare - distribution.x ;\\n\\t\\t\\tfloat variance = max( 0.00000, distribution.y * distribution.y );\\n\\t\\t\\tfloat softness_probability = variance / (variance + distance * distance );\\t\\t\\tsoftness_probability = clamp( ( softness_probability - 0.3 ) / ( 0.95 - 0.3 ), 0.0, 1.0 );\\t\\t\\tocclusion = clamp( max( hard_shadow, softness_probability ), 0.0, 1.0 );\\n\\t\\t}\\n\\t\\treturn occlusion;\\n\\t}\\n\\tfloat getShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord ) {\\n\\t\\tfloat shadow = 1.0;\\n\\t\\tshadowCoord.xyz /= shadowCoord.w;\\n\\t\\tshadowCoord.z += shadowBias;\\n\\t\\tbvec4 inFrustumVec = bvec4 ( shadowCoord.x >= 0.0, shadowCoord.x <= 1.0, shadowCoord.y >= 0.0, shadowCoord.y <= 1.0 );\\n\\t\\tbool inFrustum = all( inFrustumVec );\\n\\t\\tbvec2 frustumTestVec = bvec2( inFrustum, shadowCoord.z <= 1.0 );\\n\\t\\tbool frustumTest = all( frustumTestVec );\\n\\t\\tif ( frustumTest ) {\\n\\t\\t#if defined( SHADOWMAP_TYPE_PCF )\\n\\t\\t\\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\\n\\t\\t\\tfloat dx0 = - texelSize.x * shadowRadius;\\n\\t\\t\\tfloat dy0 = - texelSize.y * shadowRadius;\\n\\t\\t\\tfloat dx1 = + texelSize.x * shadowRadius;\\n\\t\\t\\tfloat dy1 = + texelSize.y * shadowRadius;\\n\\t\\t\\tfloat dx2 = dx0 / 2.0;\\n\\t\\t\\tfloat dy2 = dy0 / 2.0;\\n\\t\\t\\tfloat dx3 = dx1 / 2.0;\\n\\t\\t\\tfloat dy3 = dy1 / 2.0;\\n\\t\\t\\tshadow = (\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy0 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy0 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy0 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy2 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy2 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy2 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, 0.0 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, 0.0 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, 0.0 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, 0.0 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy3 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy3 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy3 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy1 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy1 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy1 ), shadowCoord.z )\\n\\t\\t\\t) * ( 1.0 / 17.0 );\\n\\t\\t#elif defined( SHADOWMAP_TYPE_PCF_SOFT )\\n\\t\\t\\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\\n\\t\\t\\tfloat dx = texelSize.x;\\n\\t\\t\\tfloat dy = texelSize.y;\\n\\t\\t\\tvec2 uv = shadowCoord.xy;\\n\\t\\t\\tvec2 f = fract( uv * shadowMapSize + 0.5 );\\n\\t\\t\\tuv -= f * texelSize;\\n\\t\\t\\tshadow = (\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, uv, shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, uv + vec2( dx, 0.0 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, uv + vec2( 0.0, dy ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, uv + texelSize, shadowCoord.z ) +\\n\\t\\t\\t\\tmix( texture2DCompare( shadowMap, uv + vec2( -dx, 0.0 ), shadowCoord.z ), \\n\\t\\t\\t\\t\\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 0.0 ), shadowCoord.z ),\\n\\t\\t\\t\\t\\t f.x ) +\\n\\t\\t\\t\\tmix( texture2DCompare( shadowMap, uv + vec2( -dx, dy ), shadowCoord.z ), \\n\\t\\t\\t\\t\\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, dy ), shadowCoord.z ),\\n\\t\\t\\t\\t\\t f.x ) +\\n\\t\\t\\t\\tmix( texture2DCompare( shadowMap, uv + vec2( 0.0, -dy ), shadowCoord.z ), \\n\\t\\t\\t\\t\\t texture2DCompare( shadowMap, uv + vec2( 0.0, 2.0 * dy ), shadowCoord.z ),\\n\\t\\t\\t\\t\\t f.y ) +\\n\\t\\t\\t\\tmix( texture2DCompare( shadowMap, uv + vec2( dx, -dy ), shadowCoord.z ), \\n\\t\\t\\t\\t\\t texture2DCompare( shadowMap, uv + vec2( dx, 2.0 * dy ), shadowCoord.z ),\\n\\t\\t\\t\\t\\t f.y ) +\\n\\t\\t\\t\\tmix( mix( texture2DCompare( shadowMap, uv + vec2( -dx, -dy ), shadowCoord.z ), \\n\\t\\t\\t\\t\\t\\t  texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, -dy ), shadowCoord.z ),\\n\\t\\t\\t\\t\\t\\t  f.x ),\\n\\t\\t\\t\\t\\t mix( texture2DCompare( shadowMap, uv + vec2( -dx, 2.0 * dy ), shadowCoord.z ), \\n\\t\\t\\t\\t\\t\\t  texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 2.0 * dy ), shadowCoord.z ),\\n\\t\\t\\t\\t\\t\\t  f.x ),\\n\\t\\t\\t\\t\\t f.y )\\n\\t\\t\\t) * ( 1.0 / 9.0 );\\n\\t\\t#elif defined( SHADOWMAP_TYPE_VSM )\\n\\t\\t\\tshadow = VSMShadow( shadowMap, shadowCoord.xy, shadowCoord.z );\\n\\t\\t#else\\n\\t\\t\\tshadow = texture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z );\\n\\t\\t#endif\\n\\t\\t}\\n\\t\\treturn shadow;\\n\\t}\\n\\tvec2 cubeToUV( vec3 v, float texelSizeY ) {\\n\\t\\tvec3 absV = abs( v );\\n\\t\\tfloat scaleToCube = 1.0 / max( absV.x, max( absV.y, absV.z ) );\\n\\t\\tabsV *= scaleToCube;\\n\\t\\tv *= scaleToCube * ( 1.0 - 2.0 * texelSizeY );\\n\\t\\tvec2 planar = v.xy;\\n\\t\\tfloat almostATexel = 1.5 * texelSizeY;\\n\\t\\tfloat almostOne = 1.0 - almostATexel;\\n\\t\\tif ( absV.z >= almostOne ) {\\n\\t\\t\\tif ( v.z > 0.0 )\\n\\t\\t\\t\\tplanar.x = 4.0 - v.x;\\n\\t\\t} else if ( absV.x >= almostOne ) {\\n\\t\\t\\tfloat signX = sign( v.x );\\n\\t\\t\\tplanar.x = v.z * signX + 2.0 * signX;\\n\\t\\t} else if ( absV.y >= almostOne ) {\\n\\t\\t\\tfloat signY = sign( v.y );\\n\\t\\t\\tplanar.x = v.x + 2.0 * signY + 2.0;\\n\\t\\t\\tplanar.y = v.z * signY - 2.0;\\n\\t\\t}\\n\\t\\treturn vec2( 0.125, 0.25 ) * planar + vec2( 0.375, 0.75 );\\n\\t}\\n\\tfloat getPointShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord, float shadowCameraNear, float shadowCameraFar ) {\\n\\t\\tvec2 texelSize = vec2( 1.0 ) / ( shadowMapSize * vec2( 4.0, 2.0 ) );\\n\\t\\tvec3 lightToPosition = shadowCoord.xyz;\\n\\t\\tfloat dp = ( length( lightToPosition ) - shadowCameraNear ) / ( shadowCameraFar - shadowCameraNear );\\t\\tdp += shadowBias;\\n\\t\\tvec3 bd3D = normalize( lightToPosition );\\n\\t\\t#if defined( SHADOWMAP_TYPE_PCF ) || defined( SHADOWMAP_TYPE_PCF_SOFT ) || defined( SHADOWMAP_TYPE_VSM )\\n\\t\\t\\tvec2 offset = vec2( - 1, 1 ) * shadowRadius * texelSize.y;\\n\\t\\t\\treturn (\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyy, texelSize.y ), dp ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyy, texelSize.y ), dp ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyx, texelSize.y ), dp ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyx, texelSize.y ), dp ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxy, texelSize.y ), dp ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxy, texelSize.y ), dp ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxx, texelSize.y ), dp ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxx, texelSize.y ), dp )\\n\\t\\t\\t) * ( 1.0 / 9.0 );\\n\\t\\t#else\\n\\t\\t\\treturn texture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp );\\n\\t\\t#endif\\n\\t}\\n#endif\";\n\nvar shadowmap_pars_vertex = \"#ifdef USE_SHADOWMAP\\n\\t#if NUM_DIR_LIGHT_SHADOWS > 0\\n\\t\\tuniform mat4 directionalShadowMatrix[ NUM_DIR_LIGHT_SHADOWS ];\\n\\t\\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\\n\\t\\tstruct DirectionalLightShadow {\\n\\t\\t\\tfloat shadowBias;\\n\\t\\t\\tfloat shadowNormalBias;\\n\\t\\t\\tfloat shadowRadius;\\n\\t\\t\\tvec2 shadowMapSize;\\n\\t\\t};\\n\\t\\tuniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\\n\\t#endif\\n\\t#if NUM_SPOT_LIGHT_SHADOWS > 0\\n\\t\\tuniform mat4 spotShadowMatrix[ NUM_SPOT_LIGHT_SHADOWS ];\\n\\t\\tvarying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHT_SHADOWS ];\\n\\t\\tstruct SpotLightShadow {\\n\\t\\t\\tfloat shadowBias;\\n\\t\\t\\tfloat shadowNormalBias;\\n\\t\\t\\tfloat shadowRadius;\\n\\t\\t\\tvec2 shadowMapSize;\\n\\t\\t};\\n\\t\\tuniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\\n\\t#endif\\n\\t#if NUM_POINT_LIGHT_SHADOWS > 0\\n\\t\\tuniform mat4 pointShadowMatrix[ NUM_POINT_LIGHT_SHADOWS ];\\n\\t\\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\\n\\t\\tstruct PointLightShadow {\\n\\t\\t\\tfloat shadowBias;\\n\\t\\t\\tfloat shadowNormalBias;\\n\\t\\t\\tfloat shadowRadius;\\n\\t\\t\\tvec2 shadowMapSize;\\n\\t\\t\\tfloat shadowCameraNear;\\n\\t\\t\\tfloat shadowCameraFar;\\n\\t\\t};\\n\\t\\tuniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\\n\\t#endif\\n#endif\";\n\nvar shadowmap_vertex = \"#ifdef USE_SHADOWMAP\\n\\t#if NUM_DIR_LIGHT_SHADOWS > 0 || NUM_SPOT_LIGHT_SHADOWS > 0 || NUM_POINT_LIGHT_SHADOWS > 0\\n\\t\\tvec3 shadowWorldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\\n\\t\\tvec4 shadowWorldPosition;\\n\\t#endif\\n\\t#if NUM_DIR_LIGHT_SHADOWS > 0\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\\n\\t\\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * directionalLightShadows[ i ].shadowNormalBias, 0 );\\n\\t\\tvDirectionalShadowCoord[ i ] = directionalShadowMatrix[ i ] * shadowWorldPosition;\\n\\t}\\n\\t#pragma unroll_loop_end\\n\\t#endif\\n\\t#if NUM_SPOT_LIGHT_SHADOWS > 0\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {\\n\\t\\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * spotLightShadows[ i ].shadowNormalBias, 0 );\\n\\t\\tvSpotShadowCoord[ i ] = spotShadowMatrix[ i ] * shadowWorldPosition;\\n\\t}\\n\\t#pragma unroll_loop_end\\n\\t#endif\\n\\t#if NUM_POINT_LIGHT_SHADOWS > 0\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\\n\\t\\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * pointLightShadows[ i ].shadowNormalBias, 0 );\\n\\t\\tvPointShadowCoord[ i ] = pointShadowMatrix[ i ] * shadowWorldPosition;\\n\\t}\\n\\t#pragma unroll_loop_end\\n\\t#endif\\n#endif\";\n\nvar shadowmask_pars_fragment = \"float getShadowMask() {\\n\\tfloat shadow = 1.0;\\n\\t#ifdef USE_SHADOWMAP\\n\\t#if NUM_DIR_LIGHT_SHADOWS > 0\\n\\tDirectionalLightShadow directionalLight;\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\\n\\t\\tdirectionalLight = directionalLightShadows[ i ];\\n\\t\\tshadow *= receiveShadow ? getShadow( directionalShadowMap[ i ], directionalLight.shadowMapSize, directionalLight.shadowBias, directionalLight.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\\n\\t}\\n\\t#pragma unroll_loop_end\\n\\t#endif\\n\\t#if NUM_SPOT_LIGHT_SHADOWS > 0\\n\\tSpotLightShadow spotLight;\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {\\n\\t\\tspotLight = spotLightShadows[ i ];\\n\\t\\tshadow *= receiveShadow ? getShadow( spotShadowMap[ i ], spotLight.shadowMapSize, spotLight.shadowBias, spotLight.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\\n\\t}\\n\\t#pragma unroll_loop_end\\n\\t#endif\\n\\t#if NUM_POINT_LIGHT_SHADOWS > 0\\n\\tPointLightShadow pointLight;\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\\n\\t\\tpointLight = pointLightShadows[ i ];\\n\\t\\tshadow *= receiveShadow ? getPointShadow( pointShadowMap[ i ], pointLight.shadowMapSize, pointLight.shadowBias, pointLight.shadowRadius, vPointShadowCoord[ i ], pointLight.shadowCameraNear, pointLight.shadowCameraFar ) : 1.0;\\n\\t}\\n\\t#pragma unroll_loop_end\\n\\t#endif\\n\\t#endif\\n\\treturn shadow;\\n}\";\n\nvar skinbase_vertex = \"#ifdef USE_SKINNING\\n\\tmat4 boneMatX = getBoneMatrix( skinIndex.x );\\n\\tmat4 boneMatY = getBoneMatrix( skinIndex.y );\\n\\tmat4 boneMatZ = getBoneMatrix( skinIndex.z );\\n\\tmat4 boneMatW = getBoneMatrix( skinIndex.w );\\n#endif\";\n\nvar skinning_pars_vertex = \"#ifdef USE_SKINNING\\n\\tuniform mat4 bindMatrix;\\n\\tuniform mat4 bindMatrixInverse;\\n\\t#ifdef BONE_TEXTURE\\n\\t\\tuniform highp sampler2D boneTexture;\\n\\t\\tuniform int boneTextureSize;\\n\\t\\tmat4 getBoneMatrix( const in float i ) {\\n\\t\\t\\tfloat j = i * 4.0;\\n\\t\\t\\tfloat x = mod( j, float( boneTextureSize ) );\\n\\t\\t\\tfloat y = floor( j / float( boneTextureSize ) );\\n\\t\\t\\tfloat dx = 1.0 / float( boneTextureSize );\\n\\t\\t\\tfloat dy = 1.0 / float( boneTextureSize );\\n\\t\\t\\ty = dy * ( y + 0.5 );\\n\\t\\t\\tvec4 v1 = texture2D( boneTexture, vec2( dx * ( x + 0.5 ), y ) );\\n\\t\\t\\tvec4 v2 = texture2D( boneTexture, vec2( dx * ( x + 1.5 ), y ) );\\n\\t\\t\\tvec4 v3 = texture2D( boneTexture, vec2( dx * ( x + 2.5 ), y ) );\\n\\t\\t\\tvec4 v4 = texture2D( boneTexture, vec2( dx * ( x + 3.5 ), y ) );\\n\\t\\t\\tmat4 bone = mat4( v1, v2, v3, v4 );\\n\\t\\t\\treturn bone;\\n\\t\\t}\\n\\t#else\\n\\t\\tuniform mat4 boneMatrices[ MAX_BONES ];\\n\\t\\tmat4 getBoneMatrix( const in float i ) {\\n\\t\\t\\tmat4 bone = boneMatrices[ int(i) ];\\n\\t\\t\\treturn bone;\\n\\t\\t}\\n\\t#endif\\n#endif\";\n\nvar skinning_vertex = \"#ifdef USE_SKINNING\\n\\tvec4 skinVertex = bindMatrix * vec4( transformed, 1.0 );\\n\\tvec4 skinned = vec4( 0.0 );\\n\\tskinned += boneMatX * skinVertex * skinWeight.x;\\n\\tskinned += boneMatY * skinVertex * skinWeight.y;\\n\\tskinned += boneMatZ * skinVertex * skinWeight.z;\\n\\tskinned += boneMatW * skinVertex * skinWeight.w;\\n\\ttransformed = ( bindMatrixInverse * skinned ).xyz;\\n#endif\";\n\nvar skinnormal_vertex = \"#ifdef USE_SKINNING\\n\\tmat4 skinMatrix = mat4( 0.0 );\\n\\tskinMatrix += skinWeight.x * boneMatX;\\n\\tskinMatrix += skinWeight.y * boneMatY;\\n\\tskinMatrix += skinWeight.z * boneMatZ;\\n\\tskinMatrix += skinWeight.w * boneMatW;\\n\\tskinMatrix = bindMatrixInverse * skinMatrix * bindMatrix;\\n\\tobjectNormal = vec4( skinMatrix * vec4( objectNormal, 0.0 ) ).xyz;\\n\\t#ifdef USE_TANGENT\\n\\t\\tobjectTangent = vec4( skinMatrix * vec4( objectTangent, 0.0 ) ).xyz;\\n\\t#endif\\n#endif\";\n\nvar specularmap_fragment = \"float specularStrength;\\n#ifdef USE_SPECULARMAP\\n\\tvec4 texelSpecular = texture2D( specularMap, vUv );\\n\\tspecularStrength = texelSpecular.r;\\n#else\\n\\tspecularStrength = 1.0;\\n#endif\";\n\nvar specularmap_pars_fragment = \"#ifdef USE_SPECULARMAP\\n\\tuniform sampler2D specularMap;\\n#endif\";\n\nvar tonemapping_fragment = \"#if defined( TONE_MAPPING )\\n\\tgl_FragColor.rgb = toneMapping( gl_FragColor.rgb );\\n#endif\";\n\nvar tonemapping_pars_fragment = \"#ifndef saturate\\n#define saturate(a) clamp( a, 0.0, 1.0 )\\n#endif\\nuniform float toneMappingExposure;\\nvec3 LinearToneMapping( vec3 color ) {\\n\\treturn toneMappingExposure * color;\\n}\\nvec3 ReinhardToneMapping( vec3 color ) {\\n\\tcolor *= toneMappingExposure;\\n\\treturn saturate( color / ( vec3( 1.0 ) + color ) );\\n}\\nvec3 OptimizedCineonToneMapping( vec3 color ) {\\n\\tcolor *= toneMappingExposure;\\n\\tcolor = max( vec3( 0.0 ), color - 0.004 );\\n\\treturn pow( ( color * ( 6.2 * color + 0.5 ) ) / ( color * ( 6.2 * color + 1.7 ) + 0.06 ), vec3( 2.2 ) );\\n}\\nvec3 RRTAndODTFit( vec3 v ) {\\n\\tvec3 a = v * ( v + 0.0245786 ) - 0.000090537;\\n\\tvec3 b = v * ( 0.983729 * v + 0.4329510 ) + 0.238081;\\n\\treturn a / b;\\n}\\nvec3 ACESFilmicToneMapping( vec3 color ) {\\n\\tconst mat3 ACESInputMat = mat3(\\n\\t\\tvec3( 0.59719, 0.07600, 0.02840 ),\\t\\tvec3( 0.35458, 0.90834, 0.13383 ),\\n\\t\\tvec3( 0.04823, 0.01566, 0.83777 )\\n\\t);\\n\\tconst mat3 ACESOutputMat = mat3(\\n\\t\\tvec3(  1.60475, -0.10208, -0.00327 ),\\t\\tvec3( -0.53108,  1.10813, -0.07276 ),\\n\\t\\tvec3( -0.07367, -0.00605,  1.07602 )\\n\\t);\\n\\tcolor *= toneMappingExposure / 0.6;\\n\\tcolor = ACESInputMat * color;\\n\\tcolor = RRTAndODTFit( color );\\n\\tcolor = ACESOutputMat * color;\\n\\treturn saturate( color );\\n}\\nvec3 CustomToneMapping( vec3 color ) { return color; }\";\n\nvar transmissionmap_fragment = \"#ifdef USE_TRANSMISSIONMAP\\n\\ttotalTransmission *= texture2D( transmissionMap, vUv ).r;\\n#endif\";\n\nvar transmissionmap_pars_fragment = \"#ifdef USE_TRANSMISSIONMAP\\n\\tuniform sampler2D transmissionMap;\\n#endif\";\n\nvar uv_pars_fragment = \"#if ( defined( USE_UV ) && ! defined( UVS_VERTEX_ONLY ) )\\n\\tvarying vec2 vUv;\\n#endif\";\n\nvar uv_pars_vertex = \"#ifdef USE_UV\\n\\t#ifdef UVS_VERTEX_ONLY\\n\\t\\tvec2 vUv;\\n\\t#else\\n\\t\\tvarying vec2 vUv;\\n\\t#endif\\n\\tuniform mat3 uvTransform;\\n#endif\";\n\nvar uv_vertex = \"#ifdef USE_UV\\n\\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\\n#endif\";\n\nvar uv2_pars_fragment = \"#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\\n\\tvarying vec2 vUv2;\\n#endif\";\n\nvar uv2_pars_vertex = \"#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\\n\\tattribute vec2 uv2;\\n\\tvarying vec2 vUv2;\\n\\tuniform mat3 uv2Transform;\\n#endif\";\n\nvar uv2_vertex = \"#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\\n\\tvUv2 = ( uv2Transform * vec3( uv2, 1 ) ).xy;\\n#endif\";\n\nvar worldpos_vertex = \"#if defined( USE_ENVMAP ) || defined( DISTANCE ) || defined ( USE_SHADOWMAP )\\n\\tvec4 worldPosition = vec4( transformed, 1.0 );\\n\\t#ifdef USE_INSTANCING\\n\\t\\tworldPosition = instanceMatrix * worldPosition;\\n\\t#endif\\n\\tworldPosition = modelMatrix * worldPosition;\\n#endif\";\n\nvar background_frag = \"uniform sampler2D t2D;\\nvarying vec2 vUv;\\nvoid main() {\\n\\tvec4 texColor = texture2D( t2D, vUv );\\n\\tgl_FragColor = mapTexelToLinear( texColor );\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n}\";\n\nvar background_vert = \"varying vec2 vUv;\\nuniform mat3 uvTransform;\\nvoid main() {\\n\\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\\n\\tgl_Position = vec4( position.xy, 1.0, 1.0 );\\n}\";\n\nvar cube_frag = \"#include <envmap_common_pars_fragment>\\nuniform float opacity;\\nvarying vec3 vWorldDirection;\\n#include <cube_uv_reflection_fragment>\\nvoid main() {\\n\\tvec3 vReflect = vWorldDirection;\\n\\t#include <envmap_fragment>\\n\\tgl_FragColor = envColor;\\n\\tgl_FragColor.a *= opacity;\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n}\";\n\nvar cube_vert = \"varying vec3 vWorldDirection;\\n#include <common>\\nvoid main() {\\n\\tvWorldDirection = transformDirection( position, modelMatrix );\\n\\t#include <begin_vertex>\\n\\t#include <project_vertex>\\n\\tgl_Position.z = gl_Position.w;\\n}\";\n\nvar depth_frag = \"#if DEPTH_PACKING == 3200\\n\\tuniform float opacity;\\n#endif\\n#include <common>\\n#include <packing>\\n#include <uv_pars_fragment>\\n#include <map_pars_fragment>\\n#include <alphamap_pars_fragment>\\n#include <logdepthbuf_pars_fragment>\\n#include <clipping_planes_pars_fragment>\\nvarying vec2 vHighPrecisionZW;\\nvoid main() {\\n\\t#include <clipping_planes_fragment>\\n\\tvec4 diffuseColor = vec4( 1.0 );\\n\\t#if DEPTH_PACKING == 3200\\n\\t\\tdiffuseColor.a = opacity;\\n\\t#endif\\n\\t#include <map_fragment>\\n\\t#include <alphamap_fragment>\\n\\t#include <alphatest_fragment>\\n\\t#include <logdepthbuf_fragment>\\n\\tfloat fragCoordZ = 0.5 * vHighPrecisionZW[0] / vHighPrecisionZW[1] + 0.5;\\n\\t#if DEPTH_PACKING == 3200\\n\\t\\tgl_FragColor = vec4( vec3( 1.0 - fragCoordZ ), opacity );\\n\\t#elif DEPTH_PACKING == 3201\\n\\t\\tgl_FragColor = packDepthToRGBA( fragCoordZ );\\n\\t#endif\\n}\";\n\nvar depth_vert = \"#include <common>\\n#include <uv_pars_vertex>\\n#include <displacementmap_pars_vertex>\\n#include <morphtarget_pars_vertex>\\n#include <skinning_pars_vertex>\\n#include <logdepthbuf_pars_vertex>\\n#include <clipping_planes_pars_vertex>\\nvarying vec2 vHighPrecisionZW;\\nvoid main() {\\n\\t#include <uv_vertex>\\n\\t#include <skinbase_vertex>\\n\\t#ifdef USE_DISPLACEMENTMAP\\n\\t\\t#include <beginnormal_vertex>\\n\\t\\t#include <morphnormal_vertex>\\n\\t\\t#include <skinnormal_vertex>\\n\\t#endif\\n\\t#include <begin_vertex>\\n\\t#include <morphtarget_vertex>\\n\\t#include <skinning_vertex>\\n\\t#include <displacementmap_vertex>\\n\\t#include <project_vertex>\\n\\t#include <logdepthbuf_vertex>\\n\\t#include <clipping_planes_vertex>\\n\\tvHighPrecisionZW = gl_Position.zw;\\n}\";\n\nvar distanceRGBA_frag = \"#define DISTANCE\\nuniform vec3 referencePosition;\\nuniform float nearDistance;\\nuniform float farDistance;\\nvarying vec3 vWorldPosition;\\n#include <common>\\n#include <packing>\\n#include <uv_pars_fragment>\\n#include <map_pars_fragment>\\n#include <alphamap_pars_fragment>\\n#include <clipping_planes_pars_fragment>\\nvoid main () {\\n\\t#include <clipping_planes_fragment>\\n\\tvec4 diffuseColor = vec4( 1.0 );\\n\\t#include <map_fragment>\\n\\t#include <alphamap_fragment>\\n\\t#include <alphatest_fragment>\\n\\tfloat dist = length( vWorldPosition - referencePosition );\\n\\tdist = ( dist - nearDistance ) / ( farDistance - nearDistance );\\n\\tdist = saturate( dist );\\n\\tgl_FragColor = packDepthToRGBA( dist );\\n}\";\n\nvar distanceRGBA_vert = \"#define DISTANCE\\nvarying vec3 vWorldPosition;\\n#include <common>\\n#include <uv_pars_vertex>\\n#include <displacementmap_pars_vertex>\\n#include <morphtarget_pars_vertex>\\n#include <skinning_pars_vertex>\\n#include <clipping_planes_pars_vertex>\\nvoid main() {\\n\\t#include <uv_vertex>\\n\\t#include <skinbase_vertex>\\n\\t#ifdef USE_DISPLACEMENTMAP\\n\\t\\t#include <beginnormal_vertex>\\n\\t\\t#include <morphnormal_vertex>\\n\\t\\t#include <skinnormal_vertex>\\n\\t#endif\\n\\t#include <begin_vertex>\\n\\t#include <morphtarget_vertex>\\n\\t#include <skinning_vertex>\\n\\t#include <displacementmap_vertex>\\n\\t#include <project_vertex>\\n\\t#include <worldpos_vertex>\\n\\t#include <clipping_planes_vertex>\\n\\tvWorldPosition = worldPosition.xyz;\\n}\";\n\nvar equirect_frag = \"uniform sampler2D tEquirect;\\nvarying vec3 vWorldDirection;\\n#include <common>\\nvoid main() {\\n\\tvec3 direction = normalize( vWorldDirection );\\n\\tvec2 sampleUV = equirectUv( direction );\\n\\tvec4 texColor = texture2D( tEquirect, sampleUV );\\n\\tgl_FragColor = mapTexelToLinear( texColor );\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n}\";\n\nvar equirect_vert = \"varying vec3 vWorldDirection;\\n#include <common>\\nvoid main() {\\n\\tvWorldDirection = transformDirection( position, modelMatrix );\\n\\t#include <begin_vertex>\\n\\t#include <project_vertex>\\n}\";\n\nvar linedashed_frag = \"uniform vec3 diffuse;\\nuniform float opacity;\\nuniform float dashSize;\\nuniform float totalSize;\\nvarying float vLineDistance;\\n#include <common>\\n#include <color_pars_fragment>\\n#include <fog_pars_fragment>\\n#include <logdepthbuf_pars_fragment>\\n#include <clipping_planes_pars_fragment>\\nvoid main() {\\n\\t#include <clipping_planes_fragment>\\n\\tif ( mod( vLineDistance, totalSize ) > dashSize ) {\\n\\t\\tdiscard;\\n\\t}\\n\\tvec3 outgoingLight = vec3( 0.0 );\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\t#include <logdepthbuf_fragment>\\n\\t#include <color_fragment>\\n\\toutgoingLight = diffuseColor.rgb;\\n\\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n\\t#include <fog_fragment>\\n\\t#include <premultiplied_alpha_fragment>\\n}\";\n\nvar linedashed_vert = \"uniform float scale;\\nattribute float lineDistance;\\nvarying float vLineDistance;\\n#include <common>\\n#include <color_pars_vertex>\\n#include <fog_pars_vertex>\\n#include <morphtarget_pars_vertex>\\n#include <logdepthbuf_pars_vertex>\\n#include <clipping_planes_pars_vertex>\\nvoid main() {\\n\\tvLineDistance = scale * lineDistance;\\n\\t#include <color_vertex>\\n\\t#include <begin_vertex>\\n\\t#include <morphtarget_vertex>\\n\\t#include <project_vertex>\\n\\t#include <logdepthbuf_vertex>\\n\\t#include <clipping_planes_vertex>\\n\\t#include <fog_vertex>\\n}\";\n\nvar meshbasic_frag = \"uniform vec3 diffuse;\\nuniform float opacity;\\n#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n#endif\\n#include <common>\\n#include <dithering_pars_fragment>\\n#include <color_pars_fragment>\\n#include <uv_pars_fragment>\\n#include <uv2_pars_fragment>\\n#include <map_pars_fragment>\\n#include <alphamap_pars_fragment>\\n#include <aomap_pars_fragment>\\n#include <lightmap_pars_fragment>\\n#include <envmap_common_pars_fragment>\\n#include <envmap_pars_fragment>\\n#include <cube_uv_reflection_fragment>\\n#include <fog_pars_fragment>\\n#include <specularmap_pars_fragment>\\n#include <logdepthbuf_pars_fragment>\\n#include <clipping_planes_pars_fragment>\\nvoid main() {\\n\\t#include <clipping_planes_fragment>\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\t#include <logdepthbuf_fragment>\\n\\t#include <map_fragment>\\n\\t#include <color_fragment>\\n\\t#include <alphamap_fragment>\\n\\t#include <alphatest_fragment>\\n\\t#include <specularmap_fragment>\\n\\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\\n\\t#ifdef USE_LIGHTMAP\\n\\t\\n\\t\\tvec4 lightMapTexel= texture2D( lightMap, vUv2 );\\n\\t\\treflectedLight.indirectDiffuse += lightMapTexelToLinear( lightMapTexel ).rgb * lightMapIntensity;\\n\\t#else\\n\\t\\treflectedLight.indirectDiffuse += vec3( 1.0 );\\n\\t#endif\\n\\t#include <aomap_fragment>\\n\\treflectedLight.indirectDiffuse *= diffuseColor.rgb;\\n\\tvec3 outgoingLight = reflectedLight.indirectDiffuse;\\n\\t#include <envmap_fragment>\\n\\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n\\t#include <fog_fragment>\\n\\t#include <premultiplied_alpha_fragment>\\n\\t#include <dithering_fragment>\\n}\";\n\nvar meshbasic_vert = \"#include <common>\\n#include <uv_pars_vertex>\\n#include <uv2_pars_vertex>\\n#include <envmap_pars_vertex>\\n#include <color_pars_vertex>\\n#include <fog_pars_vertex>\\n#include <morphtarget_pars_vertex>\\n#include <skinning_pars_vertex>\\n#include <logdepthbuf_pars_vertex>\\n#include <clipping_planes_pars_vertex>\\nvoid main() {\\n\\t#include <uv_vertex>\\n\\t#include <uv2_vertex>\\n\\t#include <color_vertex>\\n\\t#include <skinbase_vertex>\\n\\t#ifdef USE_ENVMAP\\n\\t#include <beginnormal_vertex>\\n\\t#include <morphnormal_vertex>\\n\\t#include <skinnormal_vertex>\\n\\t#include <defaultnormal_vertex>\\n\\t#endif\\n\\t#include <begin_vertex>\\n\\t#include <morphtarget_vertex>\\n\\t#include <skinning_vertex>\\n\\t#include <project_vertex>\\n\\t#include <logdepthbuf_vertex>\\n\\t#include <worldpos_vertex>\\n\\t#include <clipping_planes_vertex>\\n\\t#include <envmap_vertex>\\n\\t#include <fog_vertex>\\n}\";\n\nvar meshlambert_frag = \"uniform vec3 diffuse;\\nuniform vec3 emissive;\\nuniform float opacity;\\nvarying vec3 vLightFront;\\nvarying vec3 vIndirectFront;\\n#ifdef DOUBLE_SIDED\\n\\tvarying vec3 vLightBack;\\n\\tvarying vec3 vIndirectBack;\\n#endif\\n#include <common>\\n#include <packing>\\n#include <dithering_pars_fragment>\\n#include <color_pars_fragment>\\n#include <uv_pars_fragment>\\n#include <uv2_pars_fragment>\\n#include <map_pars_fragment>\\n#include <alphamap_pars_fragment>\\n#include <aomap_pars_fragment>\\n#include <lightmap_pars_fragment>\\n#include <emissivemap_pars_fragment>\\n#include <envmap_common_pars_fragment>\\n#include <envmap_pars_fragment>\\n#include <cube_uv_reflection_fragment>\\n#include <bsdfs>\\n#include <lights_pars_begin>\\n#include <fog_pars_fragment>\\n#include <shadowmap_pars_fragment>\\n#include <shadowmask_pars_fragment>\\n#include <specularmap_pars_fragment>\\n#include <logdepthbuf_pars_fragment>\\n#include <clipping_planes_pars_fragment>\\nvoid main() {\\n\\t#include <clipping_planes_fragment>\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\\n\\tvec3 totalEmissiveRadiance = emissive;\\n\\t#include <logdepthbuf_fragment>\\n\\t#include <map_fragment>\\n\\t#include <color_fragment>\\n\\t#include <alphamap_fragment>\\n\\t#include <alphatest_fragment>\\n\\t#include <specularmap_fragment>\\n\\t#include <emissivemap_fragment>\\n\\t#ifdef DOUBLE_SIDED\\n\\t\\treflectedLight.indirectDiffuse += ( gl_FrontFacing ) ? vIndirectFront : vIndirectBack;\\n\\t#else\\n\\t\\treflectedLight.indirectDiffuse += vIndirectFront;\\n\\t#endif\\n\\t#include <lightmap_fragment>\\n\\treflectedLight.indirectDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb );\\n\\t#ifdef DOUBLE_SIDED\\n\\t\\treflectedLight.directDiffuse = ( gl_FrontFacing ) ? vLightFront : vLightBack;\\n\\t#else\\n\\t\\treflectedLight.directDiffuse = vLightFront;\\n\\t#endif\\n\\treflectedLight.directDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb ) * getShadowMask();\\n\\t#include <aomap_fragment>\\n\\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\\n\\t#include <envmap_fragment>\\n\\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n\\t#include <fog_fragment>\\n\\t#include <premultiplied_alpha_fragment>\\n\\t#include <dithering_fragment>\\n}\";\n\nvar meshlambert_vert = \"#define LAMBERT\\nvarying vec3 vLightFront;\\nvarying vec3 vIndirectFront;\\n#ifdef DOUBLE_SIDED\\n\\tvarying vec3 vLightBack;\\n\\tvarying vec3 vIndirectBack;\\n#endif\\n#include <common>\\n#include <uv_pars_vertex>\\n#include <uv2_pars_vertex>\\n#include <envmap_pars_vertex>\\n#include <bsdfs>\\n#include <lights_pars_begin>\\n#include <color_pars_vertex>\\n#include <fog_pars_vertex>\\n#include <morphtarget_pars_vertex>\\n#include <skinning_pars_vertex>\\n#include <shadowmap_pars_vertex>\\n#include <logdepthbuf_pars_vertex>\\n#include <clipping_planes_pars_vertex>\\nvoid main() {\\n\\t#include <uv_vertex>\\n\\t#include <uv2_vertex>\\n\\t#include <color_vertex>\\n\\t#include <beginnormal_vertex>\\n\\t#include <morphnormal_vertex>\\n\\t#include <skinbase_vertex>\\n\\t#include <skinnormal_vertex>\\n\\t#include <defaultnormal_vertex>\\n\\t#include <begin_vertex>\\n\\t#include <morphtarget_vertex>\\n\\t#include <skinning_vertex>\\n\\t#include <project_vertex>\\n\\t#include <logdepthbuf_vertex>\\n\\t#include <clipping_planes_vertex>\\n\\t#include <worldpos_vertex>\\n\\t#include <envmap_vertex>\\n\\t#include <lights_lambert_vertex>\\n\\t#include <shadowmap_vertex>\\n\\t#include <fog_vertex>\\n}\";\n\nvar meshmatcap_frag = \"#define MATCAP\\nuniform vec3 diffuse;\\nuniform float opacity;\\nuniform sampler2D matcap;\\nvarying vec3 vViewPosition;\\n#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n#endif\\n#include <common>\\n#include <dithering_pars_fragment>\\n#include <color_pars_fragment>\\n#include <uv_pars_fragment>\\n#include <map_pars_fragment>\\n#include <alphamap_pars_fragment>\\n#include <fog_pars_fragment>\\n#include <bumpmap_pars_fragment>\\n#include <normalmap_pars_fragment>\\n#include <logdepthbuf_pars_fragment>\\n#include <clipping_planes_pars_fragment>\\nvoid main() {\\n\\t#include <clipping_planes_fragment>\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\t#include <logdepthbuf_fragment>\\n\\t#include <map_fragment>\\n\\t#include <color_fragment>\\n\\t#include <alphamap_fragment>\\n\\t#include <alphatest_fragment>\\n\\t#include <normal_fragment_begin>\\n\\t#include <normal_fragment_maps>\\n\\tvec3 viewDir = normalize( vViewPosition );\\n\\tvec3 x = normalize( vec3( viewDir.z, 0.0, - viewDir.x ) );\\n\\tvec3 y = cross( viewDir, x );\\n\\tvec2 uv = vec2( dot( x, normal ), dot( y, normal ) ) * 0.495 + 0.5;\\n\\t#ifdef USE_MATCAP\\n\\t\\tvec4 matcapColor = texture2D( matcap, uv );\\n\\t\\tmatcapColor = matcapTexelToLinear( matcapColor );\\n\\t#else\\n\\t\\tvec4 matcapColor = vec4( 1.0 );\\n\\t#endif\\n\\tvec3 outgoingLight = diffuseColor.rgb * matcapColor.rgb;\\n\\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n\\t#include <fog_fragment>\\n\\t#include <premultiplied_alpha_fragment>\\n\\t#include <dithering_fragment>\\n}\";\n\nvar meshmatcap_vert = \"#define MATCAP\\nvarying vec3 vViewPosition;\\n#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n#endif\\n#include <common>\\n#include <uv_pars_vertex>\\n#include <color_pars_vertex>\\n#include <displacementmap_pars_vertex>\\n#include <fog_pars_vertex>\\n#include <morphtarget_pars_vertex>\\n#include <skinning_pars_vertex>\\n#include <logdepthbuf_pars_vertex>\\n#include <clipping_planes_pars_vertex>\\nvoid main() {\\n\\t#include <uv_vertex>\\n\\t#include <color_vertex>\\n\\t#include <beginnormal_vertex>\\n\\t#include <morphnormal_vertex>\\n\\t#include <skinbase_vertex>\\n\\t#include <skinnormal_vertex>\\n\\t#include <defaultnormal_vertex>\\n\\t#ifndef FLAT_SHADED\\n\\t\\tvNormal = normalize( transformedNormal );\\n\\t#endif\\n\\t#include <begin_vertex>\\n\\t#include <morphtarget_vertex>\\n\\t#include <skinning_vertex>\\n\\t#include <displacementmap_vertex>\\n\\t#include <project_vertex>\\n\\t#include <logdepthbuf_vertex>\\n\\t#include <clipping_planes_vertex>\\n\\t#include <fog_vertex>\\n\\tvViewPosition = - mvPosition.xyz;\\n}\";\n\nvar meshtoon_frag = \"#define TOON\\nuniform vec3 diffuse;\\nuniform vec3 emissive;\\nuniform float opacity;\\n#include <common>\\n#include <packing>\\n#include <dithering_pars_fragment>\\n#include <color_pars_fragment>\\n#include <uv_pars_fragment>\\n#include <uv2_pars_fragment>\\n#include <map_pars_fragment>\\n#include <alphamap_pars_fragment>\\n#include <aomap_pars_fragment>\\n#include <lightmap_pars_fragment>\\n#include <emissivemap_pars_fragment>\\n#include <gradientmap_pars_fragment>\\n#include <fog_pars_fragment>\\n#include <bsdfs>\\n#include <lights_pars_begin>\\n#include <lights_toon_pars_fragment>\\n#include <shadowmap_pars_fragment>\\n#include <bumpmap_pars_fragment>\\n#include <normalmap_pars_fragment>\\n#include <logdepthbuf_pars_fragment>\\n#include <clipping_planes_pars_fragment>\\nvoid main() {\\n\\t#include <clipping_planes_fragment>\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\\n\\tvec3 totalEmissiveRadiance = emissive;\\n\\t#include <logdepthbuf_fragment>\\n\\t#include <map_fragment>\\n\\t#include <color_fragment>\\n\\t#include <alphamap_fragment>\\n\\t#include <alphatest_fragment>\\n\\t#include <normal_fragment_begin>\\n\\t#include <normal_fragment_maps>\\n\\t#include <emissivemap_fragment>\\n\\t#include <lights_toon_fragment>\\n\\t#include <lights_fragment_begin>\\n\\t#include <lights_fragment_maps>\\n\\t#include <lights_fragment_end>\\n\\t#include <aomap_fragment>\\n\\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\\n\\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n\\t#include <fog_fragment>\\n\\t#include <premultiplied_alpha_fragment>\\n\\t#include <dithering_fragment>\\n}\";\n\nvar meshtoon_vert = \"#define TOON\\nvarying vec3 vViewPosition;\\n#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n#endif\\n#include <common>\\n#include <uv_pars_vertex>\\n#include <uv2_pars_vertex>\\n#include <displacementmap_pars_vertex>\\n#include <color_pars_vertex>\\n#include <fog_pars_vertex>\\n#include <morphtarget_pars_vertex>\\n#include <skinning_pars_vertex>\\n#include <shadowmap_pars_vertex>\\n#include <logdepthbuf_pars_vertex>\\n#include <clipping_planes_pars_vertex>\\nvoid main() {\\n\\t#include <uv_vertex>\\n\\t#include <uv2_vertex>\\n\\t#include <color_vertex>\\n\\t#include <beginnormal_vertex>\\n\\t#include <morphnormal_vertex>\\n\\t#include <skinbase_vertex>\\n\\t#include <skinnormal_vertex>\\n\\t#include <defaultnormal_vertex>\\n#ifndef FLAT_SHADED\\n\\tvNormal = normalize( transformedNormal );\\n#endif\\n\\t#include <begin_vertex>\\n\\t#include <morphtarget_vertex>\\n\\t#include <skinning_vertex>\\n\\t#include <displacementmap_vertex>\\n\\t#include <project_vertex>\\n\\t#include <logdepthbuf_vertex>\\n\\t#include <clipping_planes_vertex>\\n\\tvViewPosition = - mvPosition.xyz;\\n\\t#include <worldpos_vertex>\\n\\t#include <shadowmap_vertex>\\n\\t#include <fog_vertex>\\n}\";\n\nvar meshphong_frag = \"#define PHONG\\nuniform vec3 diffuse;\\nuniform vec3 emissive;\\nuniform vec3 specular;\\nuniform float shininess;\\nuniform float opacity;\\n#include <common>\\n#include <packing>\\n#include <dithering_pars_fragment>\\n#include <color_pars_fragment>\\n#include <uv_pars_fragment>\\n#include <uv2_pars_fragment>\\n#include <map_pars_fragment>\\n#include <alphamap_pars_fragment>\\n#include <aomap_pars_fragment>\\n#include <lightmap_pars_fragment>\\n#include <emissivemap_pars_fragment>\\n#include <envmap_common_pars_fragment>\\n#include <envmap_pars_fragment>\\n#include <cube_uv_reflection_fragment>\\n#include <fog_pars_fragment>\\n#include <bsdfs>\\n#include <lights_pars_begin>\\n#include <lights_phong_pars_fragment>\\n#include <shadowmap_pars_fragment>\\n#include <bumpmap_pars_fragment>\\n#include <normalmap_pars_fragment>\\n#include <specularmap_pars_fragment>\\n#include <logdepthbuf_pars_fragment>\\n#include <clipping_planes_pars_fragment>\\nvoid main() {\\n\\t#include <clipping_planes_fragment>\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\\n\\tvec3 totalEmissiveRadiance = emissive;\\n\\t#include <logdepthbuf_fragment>\\n\\t#include <map_fragment>\\n\\t#include <color_fragment>\\n\\t#include <alphamap_fragment>\\n\\t#include <alphatest_fragment>\\n\\t#include <specularmap_fragment>\\n\\t#include <normal_fragment_begin>\\n\\t#include <normal_fragment_maps>\\n\\t#include <emissivemap_fragment>\\n\\t#include <lights_phong_fragment>\\n\\t#include <lights_fragment_begin>\\n\\t#include <lights_fragment_maps>\\n\\t#include <lights_fragment_end>\\n\\t#include <aomap_fragment>\\n\\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;\\n\\t#include <envmap_fragment>\\n\\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n\\t#include <fog_fragment>\\n\\t#include <premultiplied_alpha_fragment>\\n\\t#include <dithering_fragment>\\n}\";\n\nvar meshphong_vert = \"#define PHONG\\nvarying vec3 vViewPosition;\\n#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n#endif\\n#include <common>\\n#include <uv_pars_vertex>\\n#include <uv2_pars_vertex>\\n#include <displacementmap_pars_vertex>\\n#include <envmap_pars_vertex>\\n#include <color_pars_vertex>\\n#include <fog_pars_vertex>\\n#include <morphtarget_pars_vertex>\\n#include <skinning_pars_vertex>\\n#include <shadowmap_pars_vertex>\\n#include <logdepthbuf_pars_vertex>\\n#include <clipping_planes_pars_vertex>\\nvoid main() {\\n\\t#include <uv_vertex>\\n\\t#include <uv2_vertex>\\n\\t#include <color_vertex>\\n\\t#include <beginnormal_vertex>\\n\\t#include <morphnormal_vertex>\\n\\t#include <skinbase_vertex>\\n\\t#include <skinnormal_vertex>\\n\\t#include <defaultnormal_vertex>\\n#ifndef FLAT_SHADED\\n\\tvNormal = normalize( transformedNormal );\\n#endif\\n\\t#include <begin_vertex>\\n\\t#include <morphtarget_vertex>\\n\\t#include <skinning_vertex>\\n\\t#include <displacementmap_vertex>\\n\\t#include <project_vertex>\\n\\t#include <logdepthbuf_vertex>\\n\\t#include <clipping_planes_vertex>\\n\\tvViewPosition = - mvPosition.xyz;\\n\\t#include <worldpos_vertex>\\n\\t#include <envmap_vertex>\\n\\t#include <shadowmap_vertex>\\n\\t#include <fog_vertex>\\n}\";\n\nvar meshphysical_frag = \"#define STANDARD\\n#ifdef PHYSICAL\\n\\t#define REFLECTIVITY\\n\\t#define CLEARCOAT\\n\\t#define TRANSMISSION\\n#endif\\nuniform vec3 diffuse;\\nuniform vec3 emissive;\\nuniform float roughness;\\nuniform float metalness;\\nuniform float opacity;\\n#ifdef TRANSMISSION\\n\\tuniform float transmission;\\n#endif\\n#ifdef REFLECTIVITY\\n\\tuniform float reflectivity;\\n#endif\\n#ifdef CLEARCOAT\\n\\tuniform float clearcoat;\\n\\tuniform float clearcoatRoughness;\\n#endif\\n#ifdef USE_SHEEN\\n\\tuniform vec3 sheen;\\n#endif\\nvarying vec3 vViewPosition;\\n#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n\\t#ifdef USE_TANGENT\\n\\t\\tvarying vec3 vTangent;\\n\\t\\tvarying vec3 vBitangent;\\n\\t#endif\\n#endif\\n#include <common>\\n#include <packing>\\n#include <dithering_pars_fragment>\\n#include <color_pars_fragment>\\n#include <uv_pars_fragment>\\n#include <uv2_pars_fragment>\\n#include <map_pars_fragment>\\n#include <alphamap_pars_fragment>\\n#include <aomap_pars_fragment>\\n#include <lightmap_pars_fragment>\\n#include <emissivemap_pars_fragment>\\n#include <transmissionmap_pars_fragment>\\n#include <bsdfs>\\n#include <cube_uv_reflection_fragment>\\n#include <envmap_common_pars_fragment>\\n#include <envmap_physical_pars_fragment>\\n#include <fog_pars_fragment>\\n#include <lights_pars_begin>\\n#include <lights_physical_pars_fragment>\\n#include <shadowmap_pars_fragment>\\n#include <bumpmap_pars_fragment>\\n#include <normalmap_pars_fragment>\\n#include <clearcoat_pars_fragment>\\n#include <roughnessmap_pars_fragment>\\n#include <metalnessmap_pars_fragment>\\n#include <logdepthbuf_pars_fragment>\\n#include <clipping_planes_pars_fragment>\\nvoid main() {\\n\\t#include <clipping_planes_fragment>\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\\n\\tvec3 totalEmissiveRadiance = emissive;\\n\\t#ifdef TRANSMISSION\\n\\t\\tfloat totalTransmission = transmission;\\n\\t#endif\\n\\t#include <logdepthbuf_fragment>\\n\\t#include <map_fragment>\\n\\t#include <color_fragment>\\n\\t#include <alphamap_fragment>\\n\\t#include <alphatest_fragment>\\n\\t#include <roughnessmap_fragment>\\n\\t#include <metalnessmap_fragment>\\n\\t#include <normal_fragment_begin>\\n\\t#include <normal_fragment_maps>\\n\\t#include <clearcoat_normal_fragment_begin>\\n\\t#include <clearcoat_normal_fragment_maps>\\n\\t#include <emissivemap_fragment>\\n\\t#include <transmissionmap_fragment>\\n\\t#include <lights_physical_fragment>\\n\\t#include <lights_fragment_begin>\\n\\t#include <lights_fragment_maps>\\n\\t#include <lights_fragment_end>\\n\\t#include <aomap_fragment>\\n\\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;\\n\\t#ifdef TRANSMISSION\\n\\t\\tdiffuseColor.a *= mix( saturate( 1. - totalTransmission + linearToRelativeLuminance( reflectedLight.directSpecular + reflectedLight.indirectSpecular ) ), 1.0, metalness );\\n\\t#endif\\n\\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n\\t#include <fog_fragment>\\n\\t#include <premultiplied_alpha_fragment>\\n\\t#include <dithering_fragment>\\n}\";\n\nvar meshphysical_vert = \"#define STANDARD\\nvarying vec3 vViewPosition;\\n#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n\\t#ifdef USE_TANGENT\\n\\t\\tvarying vec3 vTangent;\\n\\t\\tvarying vec3 vBitangent;\\n\\t#endif\\n#endif\\n#include <common>\\n#include <uv_pars_vertex>\\n#include <uv2_pars_vertex>\\n#include <displacementmap_pars_vertex>\\n#include <color_pars_vertex>\\n#include <fog_pars_vertex>\\n#include <morphtarget_pars_vertex>\\n#include <skinning_pars_vertex>\\n#include <shadowmap_pars_vertex>\\n#include <logdepthbuf_pars_vertex>\\n#include <clipping_planes_pars_vertex>\\nvoid main() {\\n\\t#include <uv_vertex>\\n\\t#include <uv2_vertex>\\n\\t#include <color_vertex>\\n\\t#include <beginnormal_vertex>\\n\\t#include <morphnormal_vertex>\\n\\t#include <skinbase_vertex>\\n\\t#include <skinnormal_vertex>\\n\\t#include <defaultnormal_vertex>\\n#ifndef FLAT_SHADED\\n\\tvNormal = normalize( transformedNormal );\\n\\t#ifdef USE_TANGENT\\n\\t\\tvTangent = normalize( transformedTangent );\\n\\t\\tvBitangent = normalize( cross( vNormal, vTangent ) * tangent.w );\\n\\t#endif\\n#endif\\n\\t#include <begin_vertex>\\n\\t#include <morphtarget_vertex>\\n\\t#include <skinning_vertex>\\n\\t#include <displacementmap_vertex>\\n\\t#include <project_vertex>\\n\\t#include <logdepthbuf_vertex>\\n\\t#include <clipping_planes_vertex>\\n\\tvViewPosition = - mvPosition.xyz;\\n\\t#include <worldpos_vertex>\\n\\t#include <shadowmap_vertex>\\n\\t#include <fog_vertex>\\n}\";\n\nvar normal_frag = \"#define NORMAL\\nuniform float opacity;\\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\\n\\tvarying vec3 vViewPosition;\\n#endif\\n#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n\\t#ifdef USE_TANGENT\\n\\t\\tvarying vec3 vTangent;\\n\\t\\tvarying vec3 vBitangent;\\n\\t#endif\\n#endif\\n#include <packing>\\n#include <uv_pars_fragment>\\n#include <bumpmap_pars_fragment>\\n#include <normalmap_pars_fragment>\\n#include <logdepthbuf_pars_fragment>\\n#include <clipping_planes_pars_fragment>\\nvoid main() {\\n\\t#include <clipping_planes_fragment>\\n\\t#include <logdepthbuf_fragment>\\n\\t#include <normal_fragment_begin>\\n\\t#include <normal_fragment_maps>\\n\\tgl_FragColor = vec4( packNormalToRGB( normal ), opacity );\\n}\";\n\nvar normal_vert = \"#define NORMAL\\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\\n\\tvarying vec3 vViewPosition;\\n#endif\\n#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n\\t#ifdef USE_TANGENT\\n\\t\\tvarying vec3 vTangent;\\n\\t\\tvarying vec3 vBitangent;\\n\\t#endif\\n#endif\\n#include <common>\\n#include <uv_pars_vertex>\\n#include <displacementmap_pars_vertex>\\n#include <morphtarget_pars_vertex>\\n#include <skinning_pars_vertex>\\n#include <logdepthbuf_pars_vertex>\\n#include <clipping_planes_pars_vertex>\\nvoid main() {\\n\\t#include <uv_vertex>\\n\\t#include <beginnormal_vertex>\\n\\t#include <morphnormal_vertex>\\n\\t#include <skinbase_vertex>\\n\\t#include <skinnormal_vertex>\\n\\t#include <defaultnormal_vertex>\\n#ifndef FLAT_SHADED\\n\\tvNormal = normalize( transformedNormal );\\n\\t#ifdef USE_TANGENT\\n\\t\\tvTangent = normalize( transformedTangent );\\n\\t\\tvBitangent = normalize( cross( vNormal, vTangent ) * tangent.w );\\n\\t#endif\\n#endif\\n\\t#include <begin_vertex>\\n\\t#include <morphtarget_vertex>\\n\\t#include <skinning_vertex>\\n\\t#include <displacementmap_vertex>\\n\\t#include <project_vertex>\\n\\t#include <logdepthbuf_vertex>\\n\\t#include <clipping_planes_vertex>\\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\\n\\tvViewPosition = - mvPosition.xyz;\\n#endif\\n}\";\n\nvar points_frag = \"uniform vec3 diffuse;\\nuniform float opacity;\\n#include <common>\\n#include <color_pars_fragment>\\n#include <map_particle_pars_fragment>\\n#include <fog_pars_fragment>\\n#include <logdepthbuf_pars_fragment>\\n#include <clipping_planes_pars_fragment>\\nvoid main() {\\n\\t#include <clipping_planes_fragment>\\n\\tvec3 outgoingLight = vec3( 0.0 );\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\t#include <logdepthbuf_fragment>\\n\\t#include <map_particle_fragment>\\n\\t#include <color_fragment>\\n\\t#include <alphatest_fragment>\\n\\toutgoingLight = diffuseColor.rgb;\\n\\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n\\t#include <fog_fragment>\\n\\t#include <premultiplied_alpha_fragment>\\n}\";\n\nvar points_vert = \"uniform float size;\\nuniform float scale;\\n#include <common>\\n#include <color_pars_vertex>\\n#include <fog_pars_vertex>\\n#include <morphtarget_pars_vertex>\\n#include <logdepthbuf_pars_vertex>\\n#include <clipping_planes_pars_vertex>\\nvoid main() {\\n\\t#include <color_vertex>\\n\\t#include <begin_vertex>\\n\\t#include <morphtarget_vertex>\\n\\t#include <project_vertex>\\n\\tgl_PointSize = size;\\n\\t#ifdef USE_SIZEATTENUATION\\n\\t\\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\\n\\t\\tif ( isPerspective ) gl_PointSize *= ( scale / - mvPosition.z );\\n\\t#endif\\n\\t#include <logdepthbuf_vertex>\\n\\t#include <clipping_planes_vertex>\\n\\t#include <worldpos_vertex>\\n\\t#include <fog_vertex>\\n}\";\n\nvar shadow_frag = \"uniform vec3 color;\\nuniform float opacity;\\n#include <common>\\n#include <packing>\\n#include <fog_pars_fragment>\\n#include <bsdfs>\\n#include <lights_pars_begin>\\n#include <shadowmap_pars_fragment>\\n#include <shadowmask_pars_fragment>\\nvoid main() {\\n\\tgl_FragColor = vec4( color, opacity * ( 1.0 - getShadowMask() ) );\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n\\t#include <fog_fragment>\\n}\";\n\nvar shadow_vert = \"#include <common>\\n#include <fog_pars_vertex>\\n#include <shadowmap_pars_vertex>\\nvoid main() {\\n\\t#include <begin_vertex>\\n\\t#include <project_vertex>\\n\\t#include <worldpos_vertex>\\n\\t#include <beginnormal_vertex>\\n\\t#include <morphnormal_vertex>\\n\\t#include <skinbase_vertex>\\n\\t#include <skinnormal_vertex>\\n\\t#include <defaultnormal_vertex>\\n\\t#include <shadowmap_vertex>\\n\\t#include <fog_vertex>\\n}\";\n\nvar sprite_frag = \"uniform vec3 diffuse;\\nuniform float opacity;\\n#include <common>\\n#include <uv_pars_fragment>\\n#include <map_pars_fragment>\\n#include <alphamap_pars_fragment>\\n#include <fog_pars_fragment>\\n#include <logdepthbuf_pars_fragment>\\n#include <clipping_planes_pars_fragment>\\nvoid main() {\\n\\t#include <clipping_planes_fragment>\\n\\tvec3 outgoingLight = vec3( 0.0 );\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\t#include <logdepthbuf_fragment>\\n\\t#include <map_fragment>\\n\\t#include <alphamap_fragment>\\n\\t#include <alphatest_fragment>\\n\\toutgoingLight = diffuseColor.rgb;\\n\\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n\\t#include <fog_fragment>\\n}\";\n\nvar sprite_vert = \"uniform float rotation;\\nuniform vec2 center;\\n#include <common>\\n#include <uv_pars_vertex>\\n#include <fog_pars_vertex>\\n#include <logdepthbuf_pars_vertex>\\n#include <clipping_planes_pars_vertex>\\nvoid main() {\\n\\t#include <uv_vertex>\\n\\tvec4 mvPosition = modelViewMatrix * vec4( 0.0, 0.0, 0.0, 1.0 );\\n\\tvec2 scale;\\n\\tscale.x = length( vec3( modelMatrix[ 0 ].x, modelMatrix[ 0 ].y, modelMatrix[ 0 ].z ) );\\n\\tscale.y = length( vec3( modelMatrix[ 1 ].x, modelMatrix[ 1 ].y, modelMatrix[ 1 ].z ) );\\n\\t#ifndef USE_SIZEATTENUATION\\n\\t\\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\\n\\t\\tif ( isPerspective ) scale *= - mvPosition.z;\\n\\t#endif\\n\\tvec2 alignedPosition = ( position.xy - ( center - vec2( 0.5 ) ) ) * scale;\\n\\tvec2 rotatedPosition;\\n\\trotatedPosition.x = cos( rotation ) * alignedPosition.x - sin( rotation ) * alignedPosition.y;\\n\\trotatedPosition.y = sin( rotation ) * alignedPosition.x + cos( rotation ) * alignedPosition.y;\\n\\tmvPosition.xy += rotatedPosition;\\n\\tgl_Position = projectionMatrix * mvPosition;\\n\\t#include <logdepthbuf_vertex>\\n\\t#include <clipping_planes_vertex>\\n\\t#include <fog_vertex>\\n}\";\n\nconst ShaderChunk = {\n\talphamap_fragment: alphamap_fragment,\n\talphamap_pars_fragment: alphamap_pars_fragment,\n\talphatest_fragment: alphatest_fragment,\n\taomap_fragment: aomap_fragment,\n\taomap_pars_fragment: aomap_pars_fragment,\n\tbegin_vertex: begin_vertex,\n\tbeginnormal_vertex: beginnormal_vertex,\n\tbsdfs: bsdfs,\n\tbumpmap_pars_fragment: bumpmap_pars_fragment,\n\tclipping_planes_fragment: clipping_planes_fragment,\n\tclipping_planes_pars_fragment: clipping_planes_pars_fragment,\n\tclipping_planes_pars_vertex: clipping_planes_pars_vertex,\n\tclipping_planes_vertex: clipping_planes_vertex,\n\tcolor_fragment: color_fragment,\n\tcolor_pars_fragment: color_pars_fragment,\n\tcolor_pars_vertex: color_pars_vertex,\n\tcolor_vertex: color_vertex,\n\tcommon: common,\n\tcube_uv_reflection_fragment: cube_uv_reflection_fragment,\n\tdefaultnormal_vertex: defaultnormal_vertex,\n\tdisplacementmap_pars_vertex: displacementmap_pars_vertex,\n\tdisplacementmap_vertex: displacementmap_vertex,\n\temissivemap_fragment: emissivemap_fragment,\n\temissivemap_pars_fragment: emissivemap_pars_fragment,\n\tencodings_fragment: encodings_fragment,\n\tencodings_pars_fragment: encodings_pars_fragment,\n\tenvmap_fragment: envmap_fragment,\n\tenvmap_common_pars_fragment: envmap_common_pars_fragment,\n\tenvmap_pars_fragment: envmap_pars_fragment,\n\tenvmap_pars_vertex: envmap_pars_vertex,\n\tenvmap_physical_pars_fragment: envmap_physical_pars_fragment,\n\tenvmap_vertex: envmap_vertex,\n\tfog_vertex: fog_vertex,\n\tfog_pars_vertex: fog_pars_vertex,\n\tfog_fragment: fog_fragment,\n\tfog_pars_fragment: fog_pars_fragment,\n\tgradientmap_pars_fragment: gradientmap_pars_fragment,\n\tlightmap_fragment: lightmap_fragment,\n\tlightmap_pars_fragment: lightmap_pars_fragment,\n\tlights_lambert_vertex: lights_lambert_vertex,\n\tlights_pars_begin: lights_pars_begin,\n\tlights_toon_fragment: lights_toon_fragment,\n\tlights_toon_pars_fragment: lights_toon_pars_fragment,\n\tlights_phong_fragment: lights_phong_fragment,\n\tlights_phong_pars_fragment: lights_phong_pars_fragment,\n\tlights_physical_fragment: lights_physical_fragment,\n\tlights_physical_pars_fragment: lights_physical_pars_fragment,\n\tlights_fragment_begin: lights_fragment_begin,\n\tlights_fragment_maps: lights_fragment_maps,\n\tlights_fragment_end: lights_fragment_end,\n\tlogdepthbuf_fragment: logdepthbuf_fragment,\n\tlogdepthbuf_pars_fragment: logdepthbuf_pars_fragment,\n\tlogdepthbuf_pars_vertex: logdepthbuf_pars_vertex,\n\tlogdepthbuf_vertex: logdepthbuf_vertex,\n\tmap_fragment: map_fragment,\n\tmap_pars_fragment: map_pars_fragment,\n\tmap_particle_fragment: map_particle_fragment,\n\tmap_particle_pars_fragment: map_particle_pars_fragment,\n\tmetalnessmap_fragment: metalnessmap_fragment,\n\tmetalnessmap_pars_fragment: metalnessmap_pars_fragment,\n\tmorphnormal_vertex: morphnormal_vertex,\n\tmorphtarget_pars_vertex: morphtarget_pars_vertex,\n\tmorphtarget_vertex: morphtarget_vertex,\n\tnormal_fragment_begin: normal_fragment_begin,\n\tnormal_fragment_maps: normal_fragment_maps,\n\tnormalmap_pars_fragment: normalmap_pars_fragment,\n\tclearcoat_normal_fragment_begin: clearcoat_normal_fragment_begin,\n\tclearcoat_normal_fragment_maps: clearcoat_normal_fragment_maps,\n\tclearcoat_pars_fragment: clearcoat_pars_fragment,\n\tpacking: packing,\n\tpremultiplied_alpha_fragment: premultiplied_alpha_fragment,\n\tproject_vertex: project_vertex,\n\tdithering_fragment: dithering_fragment,\n\tdithering_pars_fragment: dithering_pars_fragment,\n\troughnessmap_fragment: roughnessmap_fragment,\n\troughnessmap_pars_fragment: roughnessmap_pars_fragment,\n\tshadowmap_pars_fragment: shadowmap_pars_fragment,\n\tshadowmap_pars_vertex: shadowmap_pars_vertex,\n\tshadowmap_vertex: shadowmap_vertex,\n\tshadowmask_pars_fragment: shadowmask_pars_fragment,\n\tskinbase_vertex: skinbase_vertex,\n\tskinning_pars_vertex: skinning_pars_vertex,\n\tskinning_vertex: skinning_vertex,\n\tskinnormal_vertex: skinnormal_vertex,\n\tspecularmap_fragment: specularmap_fragment,\n\tspecularmap_pars_fragment: specularmap_pars_fragment,\n\ttonemapping_fragment: tonemapping_fragment,\n\ttonemapping_pars_fragment: tonemapping_pars_fragment,\n\ttransmissionmap_fragment: transmissionmap_fragment,\n\ttransmissionmap_pars_fragment: transmissionmap_pars_fragment,\n\tuv_pars_fragment: uv_pars_fragment,\n\tuv_pars_vertex: uv_pars_vertex,\n\tuv_vertex: uv_vertex,\n\tuv2_pars_fragment: uv2_pars_fragment,\n\tuv2_pars_vertex: uv2_pars_vertex,\n\tuv2_vertex: uv2_vertex,\n\tworldpos_vertex: worldpos_vertex,\n\n\tbackground_frag: background_frag,\n\tbackground_vert: background_vert,\n\tcube_frag: cube_frag,\n\tcube_vert: cube_vert,\n\tdepth_frag: depth_frag,\n\tdepth_vert: depth_vert,\n\tdistanceRGBA_frag: distanceRGBA_frag,\n\tdistanceRGBA_vert: distanceRGBA_vert,\n\tequirect_frag: equirect_frag,\n\tequirect_vert: equirect_vert,\n\tlinedashed_frag: linedashed_frag,\n\tlinedashed_vert: linedashed_vert,\n\tmeshbasic_frag: meshbasic_frag,\n\tmeshbasic_vert: meshbasic_vert,\n\tmeshlambert_frag: meshlambert_frag,\n\tmeshlambert_vert: meshlambert_vert,\n\tmeshmatcap_frag: meshmatcap_frag,\n\tmeshmatcap_vert: meshmatcap_vert,\n\tmeshtoon_frag: meshtoon_frag,\n\tmeshtoon_vert: meshtoon_vert,\n\tmeshphong_frag: meshphong_frag,\n\tmeshphong_vert: meshphong_vert,\n\tmeshphysical_frag: meshphysical_frag,\n\tmeshphysical_vert: meshphysical_vert,\n\tnormal_frag: normal_frag,\n\tnormal_vert: normal_vert,\n\tpoints_frag: points_frag,\n\tpoints_vert: points_vert,\n\tshadow_frag: shadow_frag,\n\tshadow_vert: shadow_vert,\n\tsprite_frag: sprite_frag,\n\tsprite_vert: sprite_vert\n};\n\n/**\n * Uniforms library for shared webgl shaders\n */\n\nconst UniformsLib = {\n\n\tcommon: {\n\n\t\tdiffuse: { value: new Color( 0xeeeeee ) },\n\t\topacity: { value: 1.0 },\n\n\t\tmap: { value: null },\n\t\tuvTransform: { value: new Matrix3() },\n\t\tuv2Transform: { value: new Matrix3() },\n\n\t\talphaMap: { value: null },\n\n\t},\n\n\tspecularmap: {\n\n\t\tspecularMap: { value: null },\n\n\t},\n\n\tenvmap: {\n\n\t\tenvMap: { value: null },\n\t\tflipEnvMap: { value: - 1 },\n\t\treflectivity: { value: 1.0 },\n\t\trefractionRatio: { value: 0.98 },\n\t\tmaxMipLevel: { value: 0 }\n\n\t},\n\n\taomap: {\n\n\t\taoMap: { value: null },\n\t\taoMapIntensity: { value: 1 }\n\n\t},\n\n\tlightmap: {\n\n\t\tlightMap: { value: null },\n\t\tlightMapIntensity: { value: 1 }\n\n\t},\n\n\temissivemap: {\n\n\t\temissiveMap: { value: null }\n\n\t},\n\n\tbumpmap: {\n\n\t\tbumpMap: { value: null },\n\t\tbumpScale: { value: 1 }\n\n\t},\n\n\tnormalmap: {\n\n\t\tnormalMap: { value: null },\n\t\tnormalScale: { value: new Vector2( 1, 1 ) }\n\n\t},\n\n\tdisplacementmap: {\n\n\t\tdisplacementMap: { value: null },\n\t\tdisplacementScale: { value: 1 },\n\t\tdisplacementBias: { value: 0 }\n\n\t},\n\n\troughnessmap: {\n\n\t\troughnessMap: { value: null }\n\n\t},\n\n\tmetalnessmap: {\n\n\t\tmetalnessMap: { value: null }\n\n\t},\n\n\tgradientmap: {\n\n\t\tgradientMap: { value: null }\n\n\t},\n\n\tfog: {\n\n\t\tfogDensity: { value: 0.00025 },\n\t\tfogNear: { value: 1 },\n\t\tfogFar: { value: 2000 },\n\t\tfogColor: { value: new Color( 0xffffff ) }\n\n\t},\n\n\tlights: {\n\n\t\tambientLightColor: { value: [] },\n\n\t\tlightProbe: { value: [] },\n\n\t\tdirectionalLights: { value: [], properties: {\n\t\t\tdirection: {},\n\t\t\tcolor: {}\n\t\t} },\n\n\t\tdirectionalLightShadows: { value: [], properties: {\n\t\t\tshadowBias: {},\n\t\t\tshadowNormalBias: {},\n\t\t\tshadowRadius: {},\n\t\t\tshadowMapSize: {}\n\t\t} },\n\n\t\tdirectionalShadowMap: { value: [] },\n\t\tdirectionalShadowMatrix: { value: [] },\n\n\t\tspotLights: { value: [], properties: {\n\t\t\tcolor: {},\n\t\t\tposition: {},\n\t\t\tdirection: {},\n\t\t\tdistance: {},\n\t\t\tconeCos: {},\n\t\t\tpenumbraCos: {},\n\t\t\tdecay: {}\n\t\t} },\n\n\t\tspotLightShadows: { value: [], properties: {\n\t\t\tshadowBias: {},\n\t\t\tshadowNormalBias: {},\n\t\t\tshadowRadius: {},\n\t\t\tshadowMapSize: {}\n\t\t} },\n\n\t\tspotShadowMap: { value: [] },\n\t\tspotShadowMatrix: { value: [] },\n\n\t\tpointLights: { value: [], properties: {\n\t\t\tcolor: {},\n\t\t\tposition: {},\n\t\t\tdecay: {},\n\t\t\tdistance: {}\n\t\t} },\n\n\t\tpointLightShadows: { value: [], properties: {\n\t\t\tshadowBias: {},\n\t\t\tshadowNormalBias: {},\n\t\t\tshadowRadius: {},\n\t\t\tshadowMapSize: {},\n\t\t\tshadowCameraNear: {},\n\t\t\tshadowCameraFar: {}\n\t\t} },\n\n\t\tpointShadowMap: { value: [] },\n\t\tpointShadowMatrix: { value: [] },\n\n\t\themisphereLights: { value: [], properties: {\n\t\t\tdirection: {},\n\t\t\tskyColor: {},\n\t\t\tgroundColor: {}\n\t\t} },\n\n\t\t// TODO (abelnation): RectAreaLight BRDF data needs to be moved from example to main src\n\t\trectAreaLights: { value: [], properties: {\n\t\t\tcolor: {},\n\t\t\tposition: {},\n\t\t\twidth: {},\n\t\t\theight: {}\n\t\t} },\n\n\t\tltc_1: { value: null },\n\t\tltc_2: { value: null }\n\n\t},\n\n\tpoints: {\n\n\t\tdiffuse: { value: new Color( 0xeeeeee ) },\n\t\topacity: { value: 1.0 },\n\t\tsize: { value: 1.0 },\n\t\tscale: { value: 1.0 },\n\t\tmap: { value: null },\n\t\talphaMap: { value: null },\n\t\tuvTransform: { value: new Matrix3() }\n\n\t},\n\n\tsprite: {\n\n\t\tdiffuse: { value: new Color( 0xeeeeee ) },\n\t\topacity: { value: 1.0 },\n\t\tcenter: { value: new Vector2( 0.5, 0.5 ) },\n\t\trotation: { value: 0.0 },\n\t\tmap: { value: null },\n\t\talphaMap: { value: null },\n\t\tuvTransform: { value: new Matrix3() }\n\n\t}\n\n};\n\nconst ShaderLib = {\n\n\tbasic: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.specularmap,\n\t\t\tUniformsLib.envmap,\n\t\t\tUniformsLib.aomap,\n\t\t\tUniformsLib.lightmap,\n\t\t\tUniformsLib.fog\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.meshbasic_vert,\n\t\tfragmentShader: ShaderChunk.meshbasic_frag\n\n\t},\n\n\tlambert: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.specularmap,\n\t\t\tUniformsLib.envmap,\n\t\t\tUniformsLib.aomap,\n\t\t\tUniformsLib.lightmap,\n\t\t\tUniformsLib.emissivemap,\n\t\t\tUniformsLib.fog,\n\t\t\tUniformsLib.lights,\n\t\t\t{\n\t\t\t\temissive: { value: new Color( 0x000000 ) }\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.meshlambert_vert,\n\t\tfragmentShader: ShaderChunk.meshlambert_frag\n\n\t},\n\n\tphong: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.specularmap,\n\t\t\tUniformsLib.envmap,\n\t\t\tUniformsLib.aomap,\n\t\t\tUniformsLib.lightmap,\n\t\t\tUniformsLib.emissivemap,\n\t\t\tUniformsLib.bumpmap,\n\t\t\tUniformsLib.normalmap,\n\t\t\tUniformsLib.displacementmap,\n\t\t\tUniformsLib.fog,\n\t\t\tUniformsLib.lights,\n\t\t\t{\n\t\t\t\temissive: { value: new Color( 0x000000 ) },\n\t\t\t\tspecular: { value: new Color( 0x111111 ) },\n\t\t\t\tshininess: { value: 30 }\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.meshphong_vert,\n\t\tfragmentShader: ShaderChunk.meshphong_frag\n\n\t},\n\n\tstandard: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.envmap,\n\t\t\tUniformsLib.aomap,\n\t\t\tUniformsLib.lightmap,\n\t\t\tUniformsLib.emissivemap,\n\t\t\tUniformsLib.bumpmap,\n\t\t\tUniformsLib.normalmap,\n\t\t\tUniformsLib.displacementmap,\n\t\t\tUniformsLib.roughnessmap,\n\t\t\tUniformsLib.metalnessmap,\n\t\t\tUniformsLib.fog,\n\t\t\tUniformsLib.lights,\n\t\t\t{\n\t\t\t\temissive: { value: new Color( 0x000000 ) },\n\t\t\t\troughness: { value: 1.0 },\n\t\t\t\tmetalness: { value: 0.0 },\n\t\t\t\tenvMapIntensity: { value: 1 } // temporary\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.meshphysical_vert,\n\t\tfragmentShader: ShaderChunk.meshphysical_frag\n\n\t},\n\n\ttoon: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.aomap,\n\t\t\tUniformsLib.lightmap,\n\t\t\tUniformsLib.emissivemap,\n\t\t\tUniformsLib.bumpmap,\n\t\t\tUniformsLib.normalmap,\n\t\t\tUniformsLib.displacementmap,\n\t\t\tUniformsLib.gradientmap,\n\t\t\tUniformsLib.fog,\n\t\t\tUniformsLib.lights,\n\t\t\t{\n\t\t\t\temissive: { value: new Color( 0x000000 ) }\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.meshtoon_vert,\n\t\tfragmentShader: ShaderChunk.meshtoon_frag\n\n\t},\n\n\tmatcap: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.bumpmap,\n\t\t\tUniformsLib.normalmap,\n\t\t\tUniformsLib.displacementmap,\n\t\t\tUniformsLib.fog,\n\t\t\t{\n\t\t\t\tmatcap: { value: null }\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.meshmatcap_vert,\n\t\tfragmentShader: ShaderChunk.meshmatcap_frag\n\n\t},\n\n\tpoints: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.points,\n\t\t\tUniformsLib.fog\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.points_vert,\n\t\tfragmentShader: ShaderChunk.points_frag\n\n\t},\n\n\tdashed: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.fog,\n\t\t\t{\n\t\t\t\tscale: { value: 1 },\n\t\t\t\tdashSize: { value: 1 },\n\t\t\t\ttotalSize: { value: 2 }\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.linedashed_vert,\n\t\tfragmentShader: ShaderChunk.linedashed_frag\n\n\t},\n\n\tdepth: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.displacementmap\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.depth_vert,\n\t\tfragmentShader: ShaderChunk.depth_frag\n\n\t},\n\n\tnormal: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.bumpmap,\n\t\t\tUniformsLib.normalmap,\n\t\t\tUniformsLib.displacementmap,\n\t\t\t{\n\t\t\t\topacity: { value: 1.0 }\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.normal_vert,\n\t\tfragmentShader: ShaderChunk.normal_frag\n\n\t},\n\n\tsprite: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.sprite,\n\t\t\tUniformsLib.fog\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.sprite_vert,\n\t\tfragmentShader: ShaderChunk.sprite_frag\n\n\t},\n\n\tbackground: {\n\n\t\tuniforms: {\n\t\t\tuvTransform: { value: new Matrix3() },\n\t\t\tt2D: { value: null },\n\t\t},\n\n\t\tvertexShader: ShaderChunk.background_vert,\n\t\tfragmentShader: ShaderChunk.background_frag\n\n\t},\n\t/* -------------------------------------------------------------------------\n\t//\tCube map shader\n\t ------------------------------------------------------------------------- */\n\n\tcube: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.envmap,\n\t\t\t{\n\t\t\t\topacity: { value: 1.0 }\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.cube_vert,\n\t\tfragmentShader: ShaderChunk.cube_frag\n\n\t},\n\n\tequirect: {\n\n\t\tuniforms: {\n\t\t\ttEquirect: { value: null },\n\t\t},\n\n\t\tvertexShader: ShaderChunk.equirect_vert,\n\t\tfragmentShader: ShaderChunk.equirect_frag\n\n\t},\n\n\tdistanceRGBA: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.displacementmap,\n\t\t\t{\n\t\t\t\treferencePosition: { value: new Vector3() },\n\t\t\t\tnearDistance: { value: 1 },\n\t\t\t\tfarDistance: { value: 1000 }\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.distanceRGBA_vert,\n\t\tfragmentShader: ShaderChunk.distanceRGBA_frag\n\n\t},\n\n\tshadow: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.lights,\n\t\t\tUniformsLib.fog,\n\t\t\t{\n\t\t\t\tcolor: { value: new Color( 0x00000 ) },\n\t\t\t\topacity: { value: 1.0 }\n\t\t\t},\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.shadow_vert,\n\t\tfragmentShader: ShaderChunk.shadow_frag\n\n\t}\n\n};\n\nShaderLib.physical = {\n\n\tuniforms: mergeUniforms( [\n\t\tShaderLib.standard.uniforms,\n\t\t{\n\t\t\tclearcoat: { value: 0 },\n\t\t\tclearcoatMap: { value: null },\n\t\t\tclearcoatRoughness: { value: 0 },\n\t\t\tclearcoatRoughnessMap: { value: null },\n\t\t\tclearcoatNormalScale: { value: new Vector2( 1, 1 ) },\n\t\t\tclearcoatNormalMap: { value: null },\n\t\t\tsheen: { value: new Color( 0x000000 ) },\n\t\t\ttransmission: { value: 0 },\n\t\t\ttransmissionMap: { value: null },\n\t\t}\n\t] ),\n\n\tvertexShader: ShaderChunk.meshphysical_vert,\n\tfragmentShader: ShaderChunk.meshphysical_frag\n\n};\n\nfunction WebGLBackground( renderer, cubemaps, state, objects, premultipliedAlpha ) {\n\n\tconst clearColor = new Color( 0x000000 );\n\tlet clearAlpha = 0;\n\n\tlet planeMesh;\n\tlet boxMesh;\n\n\tlet currentBackground = null;\n\tlet currentBackgroundVersion = 0;\n\tlet currentTonemapping = null;\n\n\tfunction render( renderList, scene, camera, forceClear ) {\n\n\t\tlet background = scene.isScene === true ? scene.background : null;\n\n\t\tif ( background && background.isTexture ) {\n\n\t\t\tbackground = cubemaps.get( background );\n\n\t\t}\n\n\t\t// Ignore background in AR\n\t\t// TODO: Reconsider this.\n\n\t\tconst xr = renderer.xr;\n\t\tconst session = xr.getSession && xr.getSession();\n\n\t\tif ( session && session.environmentBlendMode === 'additive' ) {\n\n\t\t\tbackground = null;\n\n\t\t}\n\n\t\tif ( background === null ) {\n\n\t\t\tsetClear( clearColor, clearAlpha );\n\n\t\t} else if ( background && background.isColor ) {\n\n\t\t\tsetClear( background, 1 );\n\t\t\tforceClear = true;\n\n\t\t}\n\n\t\tif ( renderer.autoClear || forceClear ) {\n\n\t\t\trenderer.clear( renderer.autoClearColor, renderer.autoClearDepth, renderer.autoClearStencil );\n\n\t\t}\n\n\t\tif ( background && ( background.isCubeTexture || background.isWebGLCubeRenderTarget || background.mapping === CubeUVReflectionMapping ) ) {\n\n\t\t\tif ( boxMesh === undefined ) {\n\n\t\t\t\tboxMesh = new Mesh(\n\t\t\t\t\tnew BoxBufferGeometry( 1, 1, 1 ),\n\t\t\t\t\tnew ShaderMaterial( {\n\t\t\t\t\t\tname: 'BackgroundCubeMaterial',\n\t\t\t\t\t\tuniforms: cloneUniforms( ShaderLib.cube.uniforms ),\n\t\t\t\t\t\tvertexShader: ShaderLib.cube.vertexShader,\n\t\t\t\t\t\tfragmentShader: ShaderLib.cube.fragmentShader,\n\t\t\t\t\t\tside: BackSide,\n\t\t\t\t\t\tdepthTest: false,\n\t\t\t\t\t\tdepthWrite: false,\n\t\t\t\t\t\tfog: false\n\t\t\t\t\t} )\n\t\t\t\t);\n\n\t\t\t\tboxMesh.geometry.deleteAttribute( 'normal' );\n\t\t\t\tboxMesh.geometry.deleteAttribute( 'uv' );\n\n\t\t\t\tboxMesh.onBeforeRender = function ( renderer, scene, camera ) {\n\n\t\t\t\t\tthis.matrixWorld.copyPosition( camera.matrixWorld );\n\n\t\t\t\t};\n\n\t\t\t\t// enable code injection for non-built-in material\n\t\t\t\tObject.defineProperty( boxMesh.material, 'envMap', {\n\n\t\t\t\t\tget: function () {\n\n\t\t\t\t\t\treturn this.uniforms.envMap.value;\n\n\t\t\t\t\t}\n\n\t\t\t\t} );\n\n\t\t\t\tobjects.update( boxMesh );\n\n\t\t\t}\n\n\t\t\tif ( background.isWebGLCubeRenderTarget ) {\n\n\t\t\t\t// TODO Deprecate\n\n\t\t\t\tbackground = background.texture;\n\n\t\t\t}\n\n\t\t\tboxMesh.material.uniforms.envMap.value = background;\n\t\t\tboxMesh.material.uniforms.flipEnvMap.value = ( background.isCubeTexture && background._needsFlipEnvMap ) ? - 1 : 1;\n\n\t\t\tif ( currentBackground !== background ||\n\t\t\t\tcurrentBackgroundVersion !== background.version ||\n\t\t\t\tcurrentTonemapping !== renderer.toneMapping ) {\n\n\t\t\t\tboxMesh.material.needsUpdate = true;\n\n\t\t\t\tcurrentBackground = background;\n\t\t\t\tcurrentBackgroundVersion = background.version;\n\t\t\t\tcurrentTonemapping = renderer.toneMapping;\n\n\t\t\t}\n\n\t\t\t// push to the pre-sorted opaque render list\n\t\t\trenderList.unshift( boxMesh, boxMesh.geometry, boxMesh.material, 0, 0, null );\n\n\t\t} else if ( background && background.isTexture ) {\n\n\t\t\tif ( planeMesh === undefined ) {\n\n\t\t\t\tplaneMesh = new Mesh(\n\t\t\t\t\tnew PlaneBufferGeometry( 2, 2 ),\n\t\t\t\t\tnew ShaderMaterial( {\n\t\t\t\t\t\tname: 'BackgroundMaterial',\n\t\t\t\t\t\tuniforms: cloneUniforms( ShaderLib.background.uniforms ),\n\t\t\t\t\t\tvertexShader: ShaderLib.background.vertexShader,\n\t\t\t\t\t\tfragmentShader: ShaderLib.background.fragmentShader,\n\t\t\t\t\t\tside: FrontSide,\n\t\t\t\t\t\tdepthTest: false,\n\t\t\t\t\t\tdepthWrite: false,\n\t\t\t\t\t\tfog: false\n\t\t\t\t\t} )\n\t\t\t\t);\n\n\t\t\t\tplaneMesh.geometry.deleteAttribute( 'normal' );\n\n\t\t\t\t// enable code injection for non-built-in material\n\t\t\t\tObject.defineProperty( planeMesh.material, 'map', {\n\n\t\t\t\t\tget: function () {\n\n\t\t\t\t\t\treturn this.uniforms.t2D.value;\n\n\t\t\t\t\t}\n\n\t\t\t\t} );\n\n\t\t\t\tobjects.update( planeMesh );\n\n\t\t\t}\n\n\t\t\tplaneMesh.material.uniforms.t2D.value = background;\n\n\t\t\tif ( background.matrixAutoUpdate === true ) {\n\n\t\t\t\tbackground.updateMatrix();\n\n\t\t\t}\n\n\t\t\tplaneMesh.material.uniforms.uvTransform.value.copy( background.matrix );\n\n\t\t\tif ( currentBackground !== background ||\n\t\t\t\tcurrentBackgroundVersion !== background.version ||\n\t\t\t\tcurrentTonemapping !== renderer.toneMapping ) {\n\n\t\t\t\tplaneMesh.material.needsUpdate = true;\n\n\t\t\t\tcurrentBackground = background;\n\t\t\t\tcurrentBackgroundVersion = background.version;\n\t\t\t\tcurrentTonemapping = renderer.toneMapping;\n\n\t\t\t}\n\n\n\t\t\t// push to the pre-sorted opaque render list\n\t\t\trenderList.unshift( planeMesh, planeMesh.geometry, planeMesh.material, 0, 0, null );\n\n\t\t}\n\n\t}\n\n\tfunction setClear( color, alpha ) {\n\n\t\tstate.buffers.color.setClear( color.r, color.g, color.b, alpha, premultipliedAlpha );\n\n\t}\n\n\treturn {\n\n\t\tgetClearColor: function () {\n\n\t\t\treturn clearColor;\n\n\t\t},\n\t\tsetClearColor: function ( color, alpha = 1 ) {\n\n\t\t\tclearColor.set( color );\n\t\t\tclearAlpha = alpha;\n\t\t\tsetClear( clearColor, clearAlpha );\n\n\t\t},\n\t\tgetClearAlpha: function () {\n\n\t\t\treturn clearAlpha;\n\n\t\t},\n\t\tsetClearAlpha: function ( alpha ) {\n\n\t\t\tclearAlpha = alpha;\n\t\t\tsetClear( clearColor, clearAlpha );\n\n\t\t},\n\t\trender: render\n\n\t};\n\n}\n\nfunction WebGLBindingStates( gl, extensions, attributes, capabilities ) {\n\n\tconst maxVertexAttributes = gl.getParameter( 34921 );\n\n\tconst extension = capabilities.isWebGL2 ? null : extensions.get( 'OES_vertex_array_object' );\n\tconst vaoAvailable = capabilities.isWebGL2 || extension !== null;\n\n\tconst bindingStates = {};\n\n\tconst defaultState = createBindingState( null );\n\tlet currentState = defaultState;\n\n\tfunction setup( object, material, program, geometry, index ) {\n\n\t\tlet updateBuffers = false;\n\n\t\tif ( vaoAvailable ) {\n\n\t\t\tconst state = getBindingState( geometry, program, material );\n\n\t\t\tif ( currentState !== state ) {\n\n\t\t\t\tcurrentState = state;\n\t\t\t\tbindVertexArrayObject( currentState.object );\n\n\t\t\t}\n\n\t\t\tupdateBuffers = needsUpdate( geometry, index );\n\n\t\t\tif ( updateBuffers ) saveCache( geometry, index );\n\n\t\t} else {\n\n\t\t\tconst wireframe = ( material.wireframe === true );\n\n\t\t\tif ( currentState.geometry !== geometry.id ||\n\t\t\t\tcurrentState.program !== program.id ||\n\t\t\t\tcurrentState.wireframe !== wireframe ) {\n\n\t\t\t\tcurrentState.geometry = geometry.id;\n\t\t\t\tcurrentState.program = program.id;\n\t\t\t\tcurrentState.wireframe = wireframe;\n\n\t\t\t\tupdateBuffers = true;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( object.isInstancedMesh === true ) {\n\n\t\t\tupdateBuffers = true;\n\n\t\t}\n\n\t\tif ( index !== null ) {\n\n\t\t\tattributes.update( index, 34963 );\n\n\t\t}\n\n\t\tif ( updateBuffers ) {\n\n\t\t\tsetupVertexAttributes( object, material, program, geometry );\n\n\t\t\tif ( index !== null ) {\n\n\t\t\t\tgl.bindBuffer( 34963, attributes.get( index ).buffer );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tfunction createVertexArrayObject() {\n\n\t\tif ( capabilities.isWebGL2 ) return gl.createVertexArray();\n\n\t\treturn extension.createVertexArrayOES();\n\n\t}\n\n\tfunction bindVertexArrayObject( vao ) {\n\n\t\tif ( capabilities.isWebGL2 ) return gl.bindVertexArray( vao );\n\n\t\treturn extension.bindVertexArrayOES( vao );\n\n\t}\n\n\tfunction deleteVertexArrayObject( vao ) {\n\n\t\tif ( capabilities.isWebGL2 ) return gl.deleteVertexArray( vao );\n\n\t\treturn extension.deleteVertexArrayOES( vao );\n\n\t}\n\n\tfunction getBindingState( geometry, program, material ) {\n\n\t\tconst wireframe = ( material.wireframe === true );\n\n\t\tlet programMap = bindingStates[ geometry.id ];\n\n\t\tif ( programMap === undefined ) {\n\n\t\t\tprogramMap = {};\n\t\t\tbindingStates[ geometry.id ] = programMap;\n\n\t\t}\n\n\t\tlet stateMap = programMap[ program.id ];\n\n\t\tif ( stateMap === undefined ) {\n\n\t\t\tstateMap = {};\n\t\t\tprogramMap[ program.id ] = stateMap;\n\n\t\t}\n\n\t\tlet state = stateMap[ wireframe ];\n\n\t\tif ( state === undefined ) {\n\n\t\t\tstate = createBindingState( createVertexArrayObject() );\n\t\t\tstateMap[ wireframe ] = state;\n\n\t\t}\n\n\t\treturn state;\n\n\t}\n\n\tfunction createBindingState( vao ) {\n\n\t\tconst newAttributes = [];\n\t\tconst enabledAttributes = [];\n\t\tconst attributeDivisors = [];\n\n\t\tfor ( let i = 0; i < maxVertexAttributes; i ++ ) {\n\n\t\t\tnewAttributes[ i ] = 0;\n\t\t\tenabledAttributes[ i ] = 0;\n\t\t\tattributeDivisors[ i ] = 0;\n\n\t\t}\n\n\t\treturn {\n\n\t\t\t// for backward compatibility on non-VAO support browser\n\t\t\tgeometry: null,\n\t\t\tprogram: null,\n\t\t\twireframe: false,\n\n\t\t\tnewAttributes: newAttributes,\n\t\t\tenabledAttributes: enabledAttributes,\n\t\t\tattributeDivisors: attributeDivisors,\n\t\t\tobject: vao,\n\t\t\tattributes: {},\n\t\t\tindex: null\n\n\t\t};\n\n\t}\n\n\tfunction needsUpdate( geometry, index ) {\n\n\t\tconst cachedAttributes = currentState.attributes;\n\t\tconst geometryAttributes = geometry.attributes;\n\n\t\tlet attributesNum = 0;\n\n\t\tfor ( const key in geometryAttributes ) {\n\n\t\t\tconst cachedAttribute = cachedAttributes[ key ];\n\t\t\tconst geometryAttribute = geometryAttributes[ key ];\n\n\t\t\tif ( cachedAttribute === undefined ) return true;\n\n\t\t\tif ( cachedAttribute.attribute !== geometryAttribute ) return true;\n\n\t\t\tif ( cachedAttribute.data !== geometryAttribute.data ) return true;\n\n\t\t\tattributesNum ++;\n\n\t\t}\n\n\t\tif ( currentState.attributesNum !== attributesNum ) return true;\n\n\t\tif ( currentState.index !== index ) return true;\n\n\t\treturn false;\n\n\t}\n\n\tfunction saveCache( geometry, index ) {\n\n\t\tconst cache = {};\n\t\tconst attributes = geometry.attributes;\n\t\tlet attributesNum = 0;\n\n\t\tfor ( const key in attributes ) {\n\n\t\t\tconst attribute = attributes[ key ];\n\n\t\t\tconst data = {};\n\t\t\tdata.attribute = attribute;\n\n\t\t\tif ( attribute.data ) {\n\n\t\t\t\tdata.data = attribute.data;\n\n\t\t\t}\n\n\t\t\tcache[ key ] = data;\n\n\t\t\tattributesNum ++;\n\n\t\t}\n\n\t\tcurrentState.attributes = cache;\n\t\tcurrentState.attributesNum = attributesNum;\n\n\t\tcurrentState.index = index;\n\n\t}\n\n\tfunction initAttributes() {\n\n\t\tconst newAttributes = currentState.newAttributes;\n\n\t\tfor ( let i = 0, il = newAttributes.length; i < il; i ++ ) {\n\n\t\t\tnewAttributes[ i ] = 0;\n\n\t\t}\n\n\t}\n\n\tfunction enableAttribute( attribute ) {\n\n\t\tenableAttributeAndDivisor( attribute, 0 );\n\n\t}\n\n\tfunction enableAttributeAndDivisor( attribute, meshPerAttribute ) {\n\n\t\tconst newAttributes = currentState.newAttributes;\n\t\tconst enabledAttributes = currentState.enabledAttributes;\n\t\tconst attributeDivisors = currentState.attributeDivisors;\n\n\t\tnewAttributes[ attribute ] = 1;\n\n\t\tif ( enabledAttributes[ attribute ] === 0 ) {\n\n\t\t\tgl.enableVertexAttribArray( attribute );\n\t\t\tenabledAttributes[ attribute ] = 1;\n\n\t\t}\n\n\t\tif ( attributeDivisors[ attribute ] !== meshPerAttribute ) {\n\n\t\t\tconst extension = capabilities.isWebGL2 ? gl : extensions.get( 'ANGLE_instanced_arrays' );\n\n\t\t\textension[ capabilities.isWebGL2 ? 'vertexAttribDivisor' : 'vertexAttribDivisorANGLE' ]( attribute, meshPerAttribute );\n\t\t\tattributeDivisors[ attribute ] = meshPerAttribute;\n\n\t\t}\n\n\t}\n\n\tfunction disableUnusedAttributes() {\n\n\t\tconst newAttributes = currentState.newAttributes;\n\t\tconst enabledAttributes = currentState.enabledAttributes;\n\n\t\tfor ( let i = 0, il = enabledAttributes.length; i < il; i ++ ) {\n\n\t\t\tif ( enabledAttributes[ i ] !== newAttributes[ i ] ) {\n\n\t\t\t\tgl.disableVertexAttribArray( i );\n\t\t\t\tenabledAttributes[ i ] = 0;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tfunction vertexAttribPointer( index, size, type, normalized, stride, offset ) {\n\n\t\tif ( capabilities.isWebGL2 === true && ( type === 5124 || type === 5125 ) ) {\n\n\t\t\tgl.vertexAttribIPointer( index, size, type, stride, offset );\n\n\t\t} else {\n\n\t\t\tgl.vertexAttribPointer( index, size, type, normalized, stride, offset );\n\n\t\t}\n\n\t}\n\n\tfunction setupVertexAttributes( object, material, program, geometry ) {\n\n\t\tif ( capabilities.isWebGL2 === false && ( object.isInstancedMesh || geometry.isInstancedBufferGeometry ) ) {\n\n\t\t\tif ( extensions.get( 'ANGLE_instanced_arrays' ) === null ) return;\n\n\t\t}\n\n\t\tinitAttributes();\n\n\t\tconst geometryAttributes = geometry.attributes;\n\n\t\tconst programAttributes = program.getAttributes();\n\n\t\tconst materialDefaultAttributeValues = material.defaultAttributeValues;\n\n\t\tfor ( const name in programAttributes ) {\n\n\t\t\tconst programAttribute = programAttributes[ name ];\n\n\t\t\tif ( programAttribute >= 0 ) {\n\n\t\t\t\tconst geometryAttribute = geometryAttributes[ name ];\n\n\t\t\t\tif ( geometryAttribute !== undefined ) {\n\n\t\t\t\t\tconst normalized = geometryAttribute.normalized;\n\t\t\t\t\tconst size = geometryAttribute.itemSize;\n\n\t\t\t\t\tconst attribute = attributes.get( geometryAttribute );\n\n\t\t\t\t\t// TODO Attribute may not be available on context restore\n\n\t\t\t\t\tif ( attribute === undefined ) continue;\n\n\t\t\t\t\tconst buffer = attribute.buffer;\n\t\t\t\t\tconst type = attribute.type;\n\t\t\t\t\tconst bytesPerElement = attribute.bytesPerElement;\n\n\t\t\t\t\tif ( geometryAttribute.isInterleavedBufferAttribute ) {\n\n\t\t\t\t\t\tconst data = geometryAttribute.data;\n\t\t\t\t\t\tconst stride = data.stride;\n\t\t\t\t\t\tconst offset = geometryAttribute.offset;\n\n\t\t\t\t\t\tif ( data && data.isInstancedInterleavedBuffer ) {\n\n\t\t\t\t\t\t\tenableAttributeAndDivisor( programAttribute, data.meshPerAttribute );\n\n\t\t\t\t\t\t\tif ( geometry._maxInstanceCount === undefined ) {\n\n\t\t\t\t\t\t\t\tgeometry._maxInstanceCount = data.meshPerAttribute * data.count;\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tenableAttribute( programAttribute );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tgl.bindBuffer( 34962, buffer );\n\t\t\t\t\t\tvertexAttribPointer( programAttribute, size, type, normalized, stride * bytesPerElement, offset * bytesPerElement );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tif ( geometryAttribute.isInstancedBufferAttribute ) {\n\n\t\t\t\t\t\t\tenableAttributeAndDivisor( programAttribute, geometryAttribute.meshPerAttribute );\n\n\t\t\t\t\t\t\tif ( geometry._maxInstanceCount === undefined ) {\n\n\t\t\t\t\t\t\t\tgeometry._maxInstanceCount = geometryAttribute.meshPerAttribute * geometryAttribute.count;\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tenableAttribute( programAttribute );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tgl.bindBuffer( 34962, buffer );\n\t\t\t\t\t\tvertexAttribPointer( programAttribute, size, type, normalized, 0, 0 );\n\n\t\t\t\t\t}\n\n\t\t\t\t} else if ( name === 'instanceMatrix' ) {\n\n\t\t\t\t\tconst attribute = attributes.get( object.instanceMatrix );\n\n\t\t\t\t\t// TODO Attribute may not be available on context restore\n\n\t\t\t\t\tif ( attribute === undefined ) continue;\n\n\t\t\t\t\tconst buffer = attribute.buffer;\n\t\t\t\t\tconst type = attribute.type;\n\n\t\t\t\t\tenableAttributeAndDivisor( programAttribute + 0, 1 );\n\t\t\t\t\tenableAttributeAndDivisor( programAttribute + 1, 1 );\n\t\t\t\t\tenableAttributeAndDivisor( programAttribute + 2, 1 );\n\t\t\t\t\tenableAttributeAndDivisor( programAttribute + 3, 1 );\n\n\t\t\t\t\tgl.bindBuffer( 34962, buffer );\n\n\t\t\t\t\tgl.vertexAttribPointer( programAttribute + 0, 4, type, false, 64, 0 );\n\t\t\t\t\tgl.vertexAttribPointer( programAttribute + 1, 4, type, false, 64, 16 );\n\t\t\t\t\tgl.vertexAttribPointer( programAttribute + 2, 4, type, false, 64, 32 );\n\t\t\t\t\tgl.vertexAttribPointer( programAttribute + 3, 4, type, false, 64, 48 );\n\n\t\t\t\t} else if ( name === 'instanceColor' ) {\n\n\t\t\t\t\tconst attribute = attributes.get( object.instanceColor );\n\n\t\t\t\t\t// TODO Attribute may not be available on context restore\n\n\t\t\t\t\tif ( attribute === undefined ) continue;\n\n\t\t\t\t\tconst buffer = attribute.buffer;\n\t\t\t\t\tconst type = attribute.type;\n\n\t\t\t\t\tenableAttributeAndDivisor( programAttribute, 1 );\n\n\t\t\t\t\tgl.bindBuffer( 34962, buffer );\n\n\t\t\t\t\tgl.vertexAttribPointer( programAttribute, 3, type, false, 12, 0 );\n\n\t\t\t\t} else if ( materialDefaultAttributeValues !== undefined ) {\n\n\t\t\t\t\tconst value = materialDefaultAttributeValues[ name ];\n\n\t\t\t\t\tif ( value !== undefined ) {\n\n\t\t\t\t\t\tswitch ( value.length ) {\n\n\t\t\t\t\t\t\tcase 2:\n\t\t\t\t\t\t\t\tgl.vertexAttrib2fv( programAttribute, value );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tcase 3:\n\t\t\t\t\t\t\t\tgl.vertexAttrib3fv( programAttribute, value );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tcase 4:\n\t\t\t\t\t\t\t\tgl.vertexAttrib4fv( programAttribute, value );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tdefault:\n\t\t\t\t\t\t\t\tgl.vertexAttrib1fv( programAttribute, value );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tdisableUnusedAttributes();\n\n\t}\n\n\tfunction dispose() {\n\n\t\treset();\n\n\t\tfor ( const geometryId in bindingStates ) {\n\n\t\t\tconst programMap = bindingStates[ geometryId ];\n\n\t\t\tfor ( const programId in programMap ) {\n\n\t\t\t\tconst stateMap = programMap[ programId ];\n\n\t\t\t\tfor ( const wireframe in stateMap ) {\n\n\t\t\t\t\tdeleteVertexArrayObject( stateMap[ wireframe ].object );\n\n\t\t\t\t\tdelete stateMap[ wireframe ];\n\n\t\t\t\t}\n\n\t\t\t\tdelete programMap[ programId ];\n\n\t\t\t}\n\n\t\t\tdelete bindingStates[ geometryId ];\n\n\t\t}\n\n\t}\n\n\tfunction releaseStatesOfGeometry( geometry ) {\n\n\t\tif ( bindingStates[ geometry.id ] === undefined ) return;\n\n\t\tconst programMap = bindingStates[ geometry.id ];\n\n\t\tfor ( const programId in programMap ) {\n\n\t\t\tconst stateMap = programMap[ programId ];\n\n\t\t\tfor ( const wireframe in stateMap ) {\n\n\t\t\t\tdeleteVertexArrayObject( stateMap[ wireframe ].object );\n\n\t\t\t\tdelete stateMap[ wireframe ];\n\n\t\t\t}\n\n\t\t\tdelete programMap[ programId ];\n\n\t\t}\n\n\t\tdelete bindingStates[ geometry.id ];\n\n\t}\n\n\tfunction releaseStatesOfProgram( program ) {\n\n\t\tfor ( const geometryId in bindingStates ) {\n\n\t\t\tconst programMap = bindingStates[ geometryId ];\n\n\t\t\tif ( programMap[ program.id ] === undefined ) continue;\n\n\t\t\tconst stateMap = programMap[ program.id ];\n\n\t\t\tfor ( const wireframe in stateMap ) {\n\n\t\t\t\tdeleteVertexArrayObject( stateMap[ wireframe ].object );\n\n\t\t\t\tdelete stateMap[ wireframe ];\n\n\t\t\t}\n\n\t\t\tdelete programMap[ program.id ];\n\n\t\t}\n\n\t}\n\n\tfunction reset() {\n\n\t\tresetDefaultState();\n\n\t\tif ( currentState === defaultState ) return;\n\n\t\tcurrentState = defaultState;\n\t\tbindVertexArrayObject( currentState.object );\n\n\t}\n\n\t// for backward-compatilibity\n\n\tfunction resetDefaultState() {\n\n\t\tdefaultState.geometry = null;\n\t\tdefaultState.program = null;\n\t\tdefaultState.wireframe = false;\n\n\t}\n\n\treturn {\n\n\t\tsetup: setup,\n\t\treset: reset,\n\t\tresetDefaultState: resetDefaultState,\n\t\tdispose: dispose,\n\t\treleaseStatesOfGeometry: releaseStatesOfGeometry,\n\t\treleaseStatesOfProgram: releaseStatesOfProgram,\n\n\t\tinitAttributes: initAttributes,\n\t\tenableAttribute: enableAttribute,\n\t\tdisableUnusedAttributes: disableUnusedAttributes\n\n\t};\n\n}\n\nfunction WebGLBufferRenderer( gl, extensions, info, capabilities ) {\n\n\tconst isWebGL2 = capabilities.isWebGL2;\n\n\tlet mode;\n\n\tfunction setMode( value ) {\n\n\t\tmode = value;\n\n\t}\n\n\tfunction render( start, count ) {\n\n\t\tgl.drawArrays( mode, start, count );\n\n\t\tinfo.update( count, mode, 1 );\n\n\t}\n\n\tfunction renderInstances( start, count, primcount ) {\n\n\t\tif ( primcount === 0 ) return;\n\n\t\tlet extension, methodName;\n\n\t\tif ( isWebGL2 ) {\n\n\t\t\textension = gl;\n\t\t\tmethodName = 'drawArraysInstanced';\n\n\t\t} else {\n\n\t\t\textension = extensions.get( 'ANGLE_instanced_arrays' );\n\t\t\tmethodName = 'drawArraysInstancedANGLE';\n\n\t\t\tif ( extension === null ) {\n\n\t\t\t\tconsole.error( 'THREE.WebGLBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.' );\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t}\n\n\t\textension[ methodName ]( mode, start, count, primcount );\n\n\t\tinfo.update( count, mode, primcount );\n\n\t}\n\n\t//\n\n\tthis.setMode = setMode;\n\tthis.render = render;\n\tthis.renderInstances = renderInstances;\n\n}\n\nfunction WebGLCapabilities( gl, extensions, parameters ) {\n\n\tlet maxAnisotropy;\n\n\tfunction getMaxAnisotropy() {\n\n\t\tif ( maxAnisotropy !== undefined ) return maxAnisotropy;\n\n\t\tconst extension = extensions.get( 'EXT_texture_filter_anisotropic' );\n\n\t\tif ( extension !== null ) {\n\n\t\t\tmaxAnisotropy = gl.getParameter( extension.MAX_TEXTURE_MAX_ANISOTROPY_EXT );\n\n\t\t} else {\n\n\t\t\tmaxAnisotropy = 0;\n\n\t\t}\n\n\t\treturn maxAnisotropy;\n\n\t}\n\n\tfunction getMaxPrecision( precision ) {\n\n\t\tif ( precision === 'highp' ) {\n\n\t\t\tif ( gl.getShaderPrecisionFormat( 35633, 36338 ).precision > 0 &&\n\t\t\t\tgl.getShaderPrecisionFormat( 35632, 36338 ).precision > 0 ) {\n\n\t\t\t\treturn 'highp';\n\n\t\t\t}\n\n\t\t\tprecision = 'mediump';\n\n\t\t}\n\n\t\tif ( precision === 'mediump' ) {\n\n\t\t\tif ( gl.getShaderPrecisionFormat( 35633, 36337 ).precision > 0 &&\n\t\t\t\tgl.getShaderPrecisionFormat( 35632, 36337 ).precision > 0 ) {\n\n\t\t\t\treturn 'mediump';\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn 'lowp';\n\n\t}\n\n\t/* eslint-disable no-undef */\n\tconst isWebGL2 = ( typeof WebGL2RenderingContext !== 'undefined' && gl instanceof WebGL2RenderingContext ) ||\n\t\t( typeof WebGL2ComputeRenderingContext !== 'undefined' && gl instanceof WebGL2ComputeRenderingContext );\n\t/* eslint-enable no-undef */\n\n\tlet precision = parameters.precision !== undefined ? parameters.precision : 'highp';\n\tconst maxPrecision = getMaxPrecision( precision );\n\n\tif ( maxPrecision !== precision ) {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer:', precision, 'not supported, using', maxPrecision, 'instead.' );\n\t\tprecision = maxPrecision;\n\n\t}\n\n\tconst logarithmicDepthBuffer = parameters.logarithmicDepthBuffer === true;\n\n\tconst maxTextures = gl.getParameter( 34930 );\n\tconst maxVertexTextures = gl.getParameter( 35660 );\n\tconst maxTextureSize = gl.getParameter( 3379 );\n\tconst maxCubemapSize = gl.getParameter( 34076 );\n\n\tconst maxAttributes = gl.getParameter( 34921 );\n\tconst maxVertexUniforms = gl.getParameter( 36347 );\n\tconst maxVaryings = gl.getParameter( 36348 );\n\tconst maxFragmentUniforms = gl.getParameter( 36349 );\n\n\tconst vertexTextures = maxVertexTextures > 0;\n\tconst floatFragmentTextures = isWebGL2 || !! extensions.get( 'OES_texture_float' );\n\tconst floatVertexTextures = vertexTextures && floatFragmentTextures;\n\n\tconst maxSamples = isWebGL2 ? gl.getParameter( 36183 ) : 0;\n\n\treturn {\n\n\t\tisWebGL2: isWebGL2,\n\n\t\tgetMaxAnisotropy: getMaxAnisotropy,\n\t\tgetMaxPrecision: getMaxPrecision,\n\n\t\tprecision: precision,\n\t\tlogarithmicDepthBuffer: logarithmicDepthBuffer,\n\n\t\tmaxTextures: maxTextures,\n\t\tmaxVertexTextures: maxVertexTextures,\n\t\tmaxTextureSize: maxTextureSize,\n\t\tmaxCubemapSize: maxCubemapSize,\n\n\t\tmaxAttributes: maxAttributes,\n\t\tmaxVertexUniforms: maxVertexUniforms,\n\t\tmaxVaryings: maxVaryings,\n\t\tmaxFragmentUniforms: maxFragmentUniforms,\n\n\t\tvertexTextures: vertexTextures,\n\t\tfloatFragmentTextures: floatFragmentTextures,\n\t\tfloatVertexTextures: floatVertexTextures,\n\n\t\tmaxSamples: maxSamples\n\n\t};\n\n}\n\nfunction WebGLClipping( properties ) {\n\n\tconst scope = this;\n\n\tlet globalState = null,\n\t\tnumGlobalPlanes = 0,\n\t\tlocalClippingEnabled = false,\n\t\trenderingShadows = false;\n\n\tconst plane = new Plane(),\n\t\tviewNormalMatrix = new Matrix3(),\n\n\t\tuniform = { value: null, needsUpdate: false };\n\n\tthis.uniform = uniform;\n\tthis.numPlanes = 0;\n\tthis.numIntersection = 0;\n\n\tthis.init = function ( planes, enableLocalClipping, camera ) {\n\n\t\tconst enabled =\n\t\t\tplanes.length !== 0 ||\n\t\t\tenableLocalClipping ||\n\t\t\t// enable state of previous frame - the clipping code has to\n\t\t\t// run another frame in order to reset the state:\n\t\t\tnumGlobalPlanes !== 0 ||\n\t\t\tlocalClippingEnabled;\n\n\t\tlocalClippingEnabled = enableLocalClipping;\n\n\t\tglobalState = projectPlanes( planes, camera, 0 );\n\t\tnumGlobalPlanes = planes.length;\n\n\t\treturn enabled;\n\n\t};\n\n\tthis.beginShadows = function () {\n\n\t\trenderingShadows = true;\n\t\tprojectPlanes( null );\n\n\t};\n\n\tthis.endShadows = function () {\n\n\t\trenderingShadows = false;\n\t\tresetGlobalState();\n\n\t};\n\n\tthis.setState = function ( material, camera, useCache ) {\n\n\t\tconst planes = material.clippingPlanes,\n\t\t\tclipIntersection = material.clipIntersection,\n\t\t\tclipShadows = material.clipShadows;\n\n\t\tconst materialProperties = properties.get( material );\n\n\t\tif ( ! localClippingEnabled || planes === null || planes.length === 0 || renderingShadows && ! clipShadows ) {\n\n\t\t\t// there's no local clipping\n\n\t\t\tif ( renderingShadows ) {\n\n\t\t\t\t// there's no global clipping\n\n\t\t\t\tprojectPlanes( null );\n\n\t\t\t} else {\n\n\t\t\t\tresetGlobalState();\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tconst nGlobal = renderingShadows ? 0 : numGlobalPlanes,\n\t\t\t\tlGlobal = nGlobal * 4;\n\n\t\t\tlet dstArray = materialProperties.clippingState || null;\n\n\t\t\tuniform.value = dstArray; // ensure unique state\n\n\t\t\tdstArray = projectPlanes( planes, camera, lGlobal, useCache );\n\n\t\t\tfor ( let i = 0; i !== lGlobal; ++ i ) {\n\n\t\t\t\tdstArray[ i ] = globalState[ i ];\n\n\t\t\t}\n\n\t\t\tmaterialProperties.clippingState = dstArray;\n\t\t\tthis.numIntersection = clipIntersection ? this.numPlanes : 0;\n\t\t\tthis.numPlanes += nGlobal;\n\n\t\t}\n\n\n\t};\n\n\tfunction resetGlobalState() {\n\n\t\tif ( uniform.value !== globalState ) {\n\n\t\t\tuniform.value = globalState;\n\t\t\tuniform.needsUpdate = numGlobalPlanes > 0;\n\n\t\t}\n\n\t\tscope.numPlanes = numGlobalPlanes;\n\t\tscope.numIntersection = 0;\n\n\t}\n\n\tfunction projectPlanes( planes, camera, dstOffset, skipTransform ) {\n\n\t\tconst nPlanes = planes !== null ? planes.length : 0;\n\t\tlet dstArray = null;\n\n\t\tif ( nPlanes !== 0 ) {\n\n\t\t\tdstArray = uniform.value;\n\n\t\t\tif ( skipTransform !== true || dstArray === null ) {\n\n\t\t\t\tconst flatSize = dstOffset + nPlanes * 4,\n\t\t\t\t\tviewMatrix = camera.matrixWorldInverse;\n\n\t\t\t\tviewNormalMatrix.getNormalMatrix( viewMatrix );\n\n\t\t\t\tif ( dstArray === null || dstArray.length < flatSize ) {\n\n\t\t\t\t\tdstArray = new Float32Array( flatSize );\n\n\t\t\t\t}\n\n\t\t\t\tfor ( let i = 0, i4 = dstOffset; i !== nPlanes; ++ i, i4 += 4 ) {\n\n\t\t\t\t\tplane.copy( planes[ i ] ).applyMatrix4( viewMatrix, viewNormalMatrix );\n\n\t\t\t\t\tplane.normal.toArray( dstArray, i4 );\n\t\t\t\t\tdstArray[ i4 + 3 ] = plane.constant;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tuniform.value = dstArray;\n\t\t\tuniform.needsUpdate = true;\n\n\t\t}\n\n\t\tscope.numPlanes = nPlanes;\n\t\tscope.numIntersection = 0;\n\n\t\treturn dstArray;\n\n\t}\n\n}\n\nfunction WebGLCubeMaps( renderer ) {\n\n\tlet cubemaps = new WeakMap();\n\n\tfunction mapTextureMapping( texture, mapping ) {\n\n\t\tif ( mapping === EquirectangularReflectionMapping ) {\n\n\t\t\ttexture.mapping = CubeReflectionMapping;\n\n\t\t} else if ( mapping === EquirectangularRefractionMapping ) {\n\n\t\t\ttexture.mapping = CubeRefractionMapping;\n\n\t\t}\n\n\t\treturn texture;\n\n\t}\n\n\tfunction get( texture ) {\n\n\t\tif ( texture && texture.isTexture ) {\n\n\t\t\tconst mapping = texture.mapping;\n\n\t\t\tif ( mapping === EquirectangularReflectionMapping || mapping === EquirectangularRefractionMapping ) {\n\n\t\t\t\tif ( cubemaps.has( texture ) ) {\n\n\t\t\t\t\tconst cubemap = cubemaps.get( texture ).texture;\n\t\t\t\t\treturn mapTextureMapping( cubemap, texture.mapping );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconst image = texture.image;\n\n\t\t\t\t\tif ( image && image.height > 0 ) {\n\n\t\t\t\t\t\tconst currentRenderList = renderer.getRenderList();\n\t\t\t\t\t\tconst currentRenderTarget = renderer.getRenderTarget();\n\n\t\t\t\t\t\tconst renderTarget = new WebGLCubeRenderTarget( image.height / 2 );\n\t\t\t\t\t\trenderTarget.fromEquirectangularTexture( renderer, texture );\n\t\t\t\t\t\tcubemaps.set( texture, renderTarget );\n\n\t\t\t\t\t\trenderer.setRenderTarget( currentRenderTarget );\n\t\t\t\t\t\trenderer.setRenderList( currentRenderList );\n\n\t\t\t\t\t\ttexture.addEventListener( 'dispose', onTextureDispose );\n\n\t\t\t\t\t\treturn mapTextureMapping( renderTarget.texture, texture.mapping );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\t// image not yet ready. try the conversion next frame\n\n\t\t\t\t\t\treturn null;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn texture;\n\n\t}\n\n\tfunction onTextureDispose( event ) {\n\n\t\tconst texture = event.target;\n\n\t\ttexture.removeEventListener( 'dispose', onTextureDispose );\n\n\t\tconst cubemap = cubemaps.get( texture );\n\n\t\tif ( cubemap !== undefined ) {\n\n\t\t\tcubemaps.delete( texture );\n\t\t\tcubemap.dispose();\n\n\t\t}\n\n\t}\n\n\tfunction dispose() {\n\n\t\tcubemaps = new WeakMap();\n\n\t}\n\n\treturn {\n\t\tget: get,\n\t\tdispose: dispose\n\t};\n\n}\n\nfunction WebGLExtensions( gl ) {\n\n\tconst extensions = {};\n\n\treturn {\n\n\t\thas: function ( name ) {\n\n\t\t\tif ( extensions[ name ] !== undefined ) {\n\n\t\t\t\treturn extensions[ name ] !== null;\n\n\t\t\t}\n\n\t\t\tlet extension;\n\n\t\t\tswitch ( name ) {\n\n\t\t\t\tcase 'WEBGL_depth_texture':\n\t\t\t\t\textension = gl.getExtension( 'WEBGL_depth_texture' ) || gl.getExtension( 'MOZ_WEBGL_depth_texture' ) || gl.getExtension( 'WEBKIT_WEBGL_depth_texture' );\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'EXT_texture_filter_anisotropic':\n\t\t\t\t\textension = gl.getExtension( 'EXT_texture_filter_anisotropic' ) || gl.getExtension( 'MOZ_EXT_texture_filter_anisotropic' ) || gl.getExtension( 'WEBKIT_EXT_texture_filter_anisotropic' );\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'WEBGL_compressed_texture_s3tc':\n\t\t\t\t\textension = gl.getExtension( 'WEBGL_compressed_texture_s3tc' ) || gl.getExtension( 'MOZ_WEBGL_compressed_texture_s3tc' ) || gl.getExtension( 'WEBKIT_WEBGL_compressed_texture_s3tc' );\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'WEBGL_compressed_texture_pvrtc':\n\t\t\t\t\textension = gl.getExtension( 'WEBGL_compressed_texture_pvrtc' ) || gl.getExtension( 'WEBKIT_WEBGL_compressed_texture_pvrtc' );\n\t\t\t\t\tbreak;\n\n\t\t\t\tdefault:\n\t\t\t\t\textension = gl.getExtension( name );\n\n\t\t\t}\n\n\t\t\textensions[ name ] = extension;\n\n\t\t\treturn extension !== null;\n\n\t\t},\n\n\t\tget: function ( name ) {\n\n\t\t\tif ( ! this.has( name ) ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: ' + name + ' extension not supported.' );\n\n\t\t\t}\n\n\t\t\treturn extensions[ name ];\n\n\t\t}\n\n\t};\n\n}\n\nfunction WebGLGeometries( gl, attributes, info, bindingStates ) {\n\n\tconst geometries = new WeakMap();\n\tconst wireframeAttributes = new WeakMap();\n\n\tfunction onGeometryDispose( event ) {\n\n\t\tconst geometry = event.target;\n\t\tconst buffergeometry = geometries.get( geometry );\n\n\t\tif ( buffergeometry.index !== null ) {\n\n\t\t\tattributes.remove( buffergeometry.index );\n\n\t\t}\n\n\t\tfor ( const name in buffergeometry.attributes ) {\n\n\t\t\tattributes.remove( buffergeometry.attributes[ name ] );\n\n\t\t}\n\n\t\tgeometry.removeEventListener( 'dispose', onGeometryDispose );\n\n\t\tgeometries.delete( geometry );\n\n\t\tconst attribute = wireframeAttributes.get( buffergeometry );\n\n\t\tif ( attribute ) {\n\n\t\t\tattributes.remove( attribute );\n\t\t\twireframeAttributes.delete( buffergeometry );\n\n\t\t}\n\n\t\tbindingStates.releaseStatesOfGeometry( buffergeometry );\n\n\t\tif ( geometry.isInstancedBufferGeometry === true ) {\n\n\t\t\tdelete geometry._maxInstanceCount;\n\n\t\t}\n\n\t\t//\n\n\t\tinfo.memory.geometries --;\n\n\t}\n\n\tfunction get( object, geometry ) {\n\n\t\tlet buffergeometry = geometries.get( geometry );\n\n\t\tif ( buffergeometry ) return buffergeometry;\n\n\t\tgeometry.addEventListener( 'dispose', onGeometryDispose );\n\n\t\tif ( geometry.isBufferGeometry ) {\n\n\t\t\tbuffergeometry = geometry;\n\n\t\t} else if ( geometry.isGeometry ) {\n\n\t\t\tif ( geometry._bufferGeometry === undefined ) {\n\n\t\t\t\tgeometry._bufferGeometry = new BufferGeometry().setFromObject( object );\n\n\t\t\t}\n\n\t\t\tbuffergeometry = geometry._bufferGeometry;\n\n\t\t}\n\n\t\tgeometries.set( geometry, buffergeometry );\n\n\t\tinfo.memory.geometries ++;\n\n\t\treturn buffergeometry;\n\n\t}\n\n\tfunction update( geometry ) {\n\n\t\tconst geometryAttributes = geometry.attributes;\n\n\t\t// Updating index buffer in VAO now. See WebGLBindingStates.\n\n\t\tfor ( const name in geometryAttributes ) {\n\n\t\t\tattributes.update( geometryAttributes[ name ], 34962 );\n\n\t\t}\n\n\t\t// morph targets\n\n\t\tconst morphAttributes = geometry.morphAttributes;\n\n\t\tfor ( const name in morphAttributes ) {\n\n\t\t\tconst array = morphAttributes[ name ];\n\n\t\t\tfor ( let i = 0, l = array.length; i < l; i ++ ) {\n\n\t\t\t\tattributes.update( array[ i ], 34962 );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tfunction updateWireframeAttribute( geometry ) {\n\n\t\tconst indices = [];\n\n\t\tconst geometryIndex = geometry.index;\n\t\tconst geometryPosition = geometry.attributes.position;\n\t\tlet version = 0;\n\n\t\tif ( geometryIndex !== null ) {\n\n\t\t\tconst array = geometryIndex.array;\n\t\t\tversion = geometryIndex.version;\n\n\t\t\tfor ( let i = 0, l = array.length; i < l; i += 3 ) {\n\n\t\t\t\tconst a = array[ i + 0 ];\n\t\t\t\tconst b = array[ i + 1 ];\n\t\t\t\tconst c = array[ i + 2 ];\n\n\t\t\t\tindices.push( a, b, b, c, c, a );\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tconst array = geometryPosition.array;\n\t\t\tversion = geometryPosition.version;\n\n\t\t\tfor ( let i = 0, l = ( array.length / 3 ) - 1; i < l; i += 3 ) {\n\n\t\t\t\tconst a = i + 0;\n\t\t\t\tconst b = i + 1;\n\t\t\t\tconst c = i + 2;\n\n\t\t\t\tindices.push( a, b, b, c, c, a );\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst attribute = new ( arrayMax( indices ) > 65535 ? Uint32BufferAttribute : Uint16BufferAttribute )( indices, 1 );\n\t\tattribute.version = version;\n\n\t\t// Updating index buffer in VAO now. See WebGLBindingStates\n\n\t\t//\n\n\t\tconst previousAttribute = wireframeAttributes.get( geometry );\n\n\t\tif ( previousAttribute ) attributes.remove( previousAttribute );\n\n\t\t//\n\n\t\twireframeAttributes.set( geometry, attribute );\n\n\t}\n\n\tfunction getWireframeAttribute( geometry ) {\n\n\t\tconst currentAttribute = wireframeAttributes.get( geometry );\n\n\t\tif ( currentAttribute ) {\n\n\t\t\tconst geometryIndex = geometry.index;\n\n\t\t\tif ( geometryIndex !== null ) {\n\n\t\t\t\t// if the attribute is obsolete, create a new one\n\n\t\t\t\tif ( currentAttribute.version < geometryIndex.version ) {\n\n\t\t\t\t\tupdateWireframeAttribute( geometry );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tupdateWireframeAttribute( geometry );\n\n\t\t}\n\n\t\treturn wireframeAttributes.get( geometry );\n\n\t}\n\n\treturn {\n\n\t\tget: get,\n\t\tupdate: update,\n\n\t\tgetWireframeAttribute: getWireframeAttribute\n\n\t};\n\n}\n\nfunction WebGLIndexedBufferRenderer( gl, extensions, info, capabilities ) {\n\n\tconst isWebGL2 = capabilities.isWebGL2;\n\n\tlet mode;\n\n\tfunction setMode( value ) {\n\n\t\tmode = value;\n\n\t}\n\n\tlet type, bytesPerElement;\n\n\tfunction setIndex( value ) {\n\n\t\ttype = value.type;\n\t\tbytesPerElement = value.bytesPerElement;\n\n\t}\n\n\tfunction render( start, count ) {\n\n\t\tgl.drawElements( mode, count, type, start * bytesPerElement );\n\n\t\tinfo.update( count, mode, 1 );\n\n\t}\n\n\tfunction renderInstances( start, count, primcount ) {\n\n\t\tif ( primcount === 0 ) return;\n\n\t\tlet extension, methodName;\n\n\t\tif ( isWebGL2 ) {\n\n\t\t\textension = gl;\n\t\t\tmethodName = 'drawElementsInstanced';\n\n\t\t} else {\n\n\t\t\textension = extensions.get( 'ANGLE_instanced_arrays' );\n\t\t\tmethodName = 'drawElementsInstancedANGLE';\n\n\t\t\tif ( extension === null ) {\n\n\t\t\t\tconsole.error( 'THREE.WebGLIndexedBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.' );\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t}\n\n\t\textension[ methodName ]( mode, count, type, start * bytesPerElement, primcount );\n\n\t\tinfo.update( count, mode, primcount );\n\n\t}\n\n\t//\n\n\tthis.setMode = setMode;\n\tthis.setIndex = setIndex;\n\tthis.render = render;\n\tthis.renderInstances = renderInstances;\n\n}\n\nfunction WebGLInfo( gl ) {\n\n\tconst memory = {\n\t\tgeometries: 0,\n\t\ttextures: 0\n\t};\n\n\tconst render = {\n\t\tframe: 0,\n\t\tcalls: 0,\n\t\ttriangles: 0,\n\t\tpoints: 0,\n\t\tlines: 0\n\t};\n\n\tfunction update( count, mode, instanceCount ) {\n\n\t\trender.calls ++;\n\n\t\tswitch ( mode ) {\n\n\t\t\tcase 4:\n\t\t\t\trender.triangles += instanceCount * ( count / 3 );\n\t\t\t\tbreak;\n\n\t\t\tcase 1:\n\t\t\t\trender.lines += instanceCount * ( count / 2 );\n\t\t\t\tbreak;\n\n\t\t\tcase 3:\n\t\t\t\trender.lines += instanceCount * ( count - 1 );\n\t\t\t\tbreak;\n\n\t\t\tcase 2:\n\t\t\t\trender.lines += instanceCount * count;\n\t\t\t\tbreak;\n\n\t\t\tcase 0:\n\t\t\t\trender.points += instanceCount * count;\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\t\t\t\tconsole.error( 'THREE.WebGLInfo: Unknown draw mode:', mode );\n\t\t\t\tbreak;\n\n\t\t}\n\n\t}\n\n\tfunction reset() {\n\n\t\trender.frame ++;\n\t\trender.calls = 0;\n\t\trender.triangles = 0;\n\t\trender.points = 0;\n\t\trender.lines = 0;\n\n\t}\n\n\treturn {\n\t\tmemory: memory,\n\t\trender: render,\n\t\tprograms: null,\n\t\tautoReset: true,\n\t\treset: reset,\n\t\tupdate: update\n\t};\n\n}\n\nfunction numericalSort( a, b ) {\n\n\treturn a[ 0 ] - b[ 0 ];\n\n}\n\nfunction absNumericalSort( a, b ) {\n\n\treturn Math.abs( b[ 1 ] ) - Math.abs( a[ 1 ] );\n\n}\n\nfunction WebGLMorphtargets( gl ) {\n\n\tconst influencesList = {};\n\tconst morphInfluences = new Float32Array( 8 );\n\n\tconst workInfluences = [];\n\n\tfor ( let i = 0; i < 8; i ++ ) {\n\n\t\tworkInfluences[ i ] = [ i, 0 ];\n\n\t}\n\n\tfunction update( object, geometry, material, program ) {\n\n\t\tconst objectInfluences = object.morphTargetInfluences;\n\n\t\t// When object doesn't have morph target influences defined, we treat it as a 0-length array\n\t\t// This is important to make sure we set up morphTargetBaseInfluence / morphTargetInfluences\n\n\t\tconst length = objectInfluences === undefined ? 0 : objectInfluences.length;\n\n\t\tlet influences = influencesList[ geometry.id ];\n\n\t\tif ( influences === undefined ) {\n\n\t\t\t// initialise list\n\n\t\t\tinfluences = [];\n\n\t\t\tfor ( let i = 0; i < length; i ++ ) {\n\n\t\t\t\tinfluences[ i ] = [ i, 0 ];\n\n\t\t\t}\n\n\t\t\tinfluencesList[ geometry.id ] = influences;\n\n\t\t}\n\n\t\t// Collect influences\n\n\t\tfor ( let i = 0; i < length; i ++ ) {\n\n\t\t\tconst influence = influences[ i ];\n\n\t\t\tinfluence[ 0 ] = i;\n\t\t\tinfluence[ 1 ] = objectInfluences[ i ];\n\n\t\t}\n\n\t\tinfluences.sort( absNumericalSort );\n\n\t\tfor ( let i = 0; i < 8; i ++ ) {\n\n\t\t\tif ( i < length && influences[ i ][ 1 ] ) {\n\n\t\t\t\tworkInfluences[ i ][ 0 ] = influences[ i ][ 0 ];\n\t\t\t\tworkInfluences[ i ][ 1 ] = influences[ i ][ 1 ];\n\n\t\t\t} else {\n\n\t\t\t\tworkInfluences[ i ][ 0 ] = Number.MAX_SAFE_INTEGER;\n\t\t\t\tworkInfluences[ i ][ 1 ] = 0;\n\n\t\t\t}\n\n\t\t}\n\n\t\tworkInfluences.sort( numericalSort );\n\n\t\tconst morphTargets = material.morphTargets && geometry.morphAttributes.position;\n\t\tconst morphNormals = material.morphNormals && geometry.morphAttributes.normal;\n\n\t\tlet morphInfluencesSum = 0;\n\n\t\tfor ( let i = 0; i < 8; i ++ ) {\n\n\t\t\tconst influence = workInfluences[ i ];\n\t\t\tconst index = influence[ 0 ];\n\t\t\tconst value = influence[ 1 ];\n\n\t\t\tif ( index !== Number.MAX_SAFE_INTEGER && value ) {\n\n\t\t\t\tif ( morphTargets && geometry.getAttribute( 'morphTarget' + i ) !== morphTargets[ index ] ) {\n\n\t\t\t\t\tgeometry.setAttribute( 'morphTarget' + i, morphTargets[ index ] );\n\n\t\t\t\t}\n\n\t\t\t\tif ( morphNormals && geometry.getAttribute( 'morphNormal' + i ) !== morphNormals[ index ] ) {\n\n\t\t\t\t\tgeometry.setAttribute( 'morphNormal' + i, morphNormals[ index ] );\n\n\t\t\t\t}\n\n\t\t\t\tmorphInfluences[ i ] = value;\n\t\t\t\tmorphInfluencesSum += value;\n\n\t\t\t} else {\n\n\t\t\t\tif ( morphTargets && geometry.hasAttribute( 'morphTarget' + i ) === true ) {\n\n\t\t\t\t\tgeometry.deleteAttribute( 'morphTarget' + i );\n\n\t\t\t\t}\n\n\t\t\t\tif ( morphNormals && geometry.hasAttribute( 'morphNormal' + i ) === true ) {\n\n\t\t\t\t\tgeometry.deleteAttribute( 'morphNormal' + i );\n\n\t\t\t\t}\n\n\t\t\t\tmorphInfluences[ i ] = 0;\n\n\t\t\t}\n\n\t\t}\n\n\t\t// GLSL shader uses formula baseinfluence * base + sum(target * influence)\n\t\t// This allows us to switch between absolute morphs and relative morphs without changing shader code\n\t\t// When baseinfluence = 1 - sum(influence), the above is equivalent to sum((target - base) * influence)\n\t\tconst morphBaseInfluence = geometry.morphTargetsRelative ? 1 : 1 - morphInfluencesSum;\n\n\t\tprogram.getUniforms().setValue( gl, 'morphTargetBaseInfluence', morphBaseInfluence );\n\t\tprogram.getUniforms().setValue( gl, 'morphTargetInfluences', morphInfluences );\n\n\t}\n\n\treturn {\n\n\t\tupdate: update\n\n\t};\n\n}\n\nfunction WebGLObjects( gl, geometries, attributes, info ) {\n\n\tlet updateMap = new WeakMap();\n\n\tfunction update( object ) {\n\n\t\tconst frame = info.render.frame;\n\n\t\tconst geometry = object.geometry;\n\t\tconst buffergeometry = geometries.get( object, geometry );\n\n\t\t// Update once per frame\n\n\t\tif ( updateMap.get( buffergeometry ) !== frame ) {\n\n\t\t\tif ( geometry.isGeometry ) {\n\n\t\t\t\tbuffergeometry.updateFromObject( object );\n\n\t\t\t}\n\n\t\t\tgeometries.update( buffergeometry );\n\n\t\t\tupdateMap.set( buffergeometry, frame );\n\n\t\t}\n\n\t\tif ( object.isInstancedMesh ) {\n\n\t\t\tif ( object.hasEventListener( 'dispose', onInstancedMeshDispose ) === false ) {\n\n\t\t\t\tobject.addEventListener( 'dispose', onInstancedMeshDispose );\n\n\t\t\t}\n\n\t\t\tattributes.update( object.instanceMatrix, 34962 );\n\n\t\t\tif ( object.instanceColor !== null ) {\n\n\t\t\t\tattributes.update( object.instanceColor, 34962 );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn buffergeometry;\n\n\t}\n\n\tfunction dispose() {\n\n\t\tupdateMap = new WeakMap();\n\n\t}\n\n\tfunction onInstancedMeshDispose( event ) {\n\n\t\tconst instancedMesh = event.target;\n\n\t\tinstancedMesh.removeEventListener( 'dispose', onInstancedMeshDispose );\n\n\t\tattributes.remove( instancedMesh.instanceMatrix );\n\n\t\tif ( instancedMesh.instanceColor !== null ) attributes.remove( instancedMesh.instanceColor );\n\n\t}\n\n\treturn {\n\n\t\tupdate: update,\n\t\tdispose: dispose\n\n\t};\n\n}\n\nfunction DataTexture2DArray( data = null, width = 1, height = 1, depth = 1 ) {\n\n\tTexture.call( this, null );\n\n\tthis.image = { data, width, height, depth };\n\n\tthis.magFilter = NearestFilter;\n\tthis.minFilter = NearestFilter;\n\n\tthis.wrapR = ClampToEdgeWrapping;\n\n\tthis.generateMipmaps = false;\n\tthis.flipY = false;\n\n\tthis.needsUpdate = true;\n\n}\n\nDataTexture2DArray.prototype = Object.create( Texture.prototype );\nDataTexture2DArray.prototype.constructor = DataTexture2DArray;\nDataTexture2DArray.prototype.isDataTexture2DArray = true;\n\nfunction DataTexture3D( data = null, width = 1, height = 1, depth = 1 ) {\n\n\t// We're going to add .setXXX() methods for setting properties later.\n\t// Users can still set in DataTexture3D directly.\n\t//\n\t//\tconst texture = new THREE.DataTexture3D( data, width, height, depth );\n\t// \ttexture.anisotropy = 16;\n\t//\n\t// See #14839\n\n\tTexture.call( this, null );\n\n\tthis.image = { data, width, height, depth };\n\n\tthis.magFilter = NearestFilter;\n\tthis.minFilter = NearestFilter;\n\n\tthis.wrapR = ClampToEdgeWrapping;\n\n\tthis.generateMipmaps = false;\n\tthis.flipY = false;\n\n\tthis.needsUpdate = true;\n\n\n}\n\nDataTexture3D.prototype = Object.create( Texture.prototype );\nDataTexture3D.prototype.constructor = DataTexture3D;\nDataTexture3D.prototype.isDataTexture3D = true;\n\n/**\n * Uniforms of a program.\n * Those form a tree structure with a special top-level container for the root,\n * which you get by calling 'new WebGLUniforms( gl, program )'.\n *\n *\n * Properties of inner nodes including the top-level container:\n *\n * .seq - array of nested uniforms\n * .map - nested uniforms by name\n *\n *\n * Methods of all nodes except the top-level container:\n *\n * .setValue( gl, value, [textures] )\n *\n * \t\tuploads a uniform value(s)\n *  \tthe 'textures' parameter is needed for sampler uniforms\n *\n *\n * Static methods of the top-level container (textures factorizations):\n *\n * .upload( gl, seq, values, textures )\n *\n * \t\tsets uniforms in 'seq' to 'values[id].value'\n *\n * .seqWithValue( seq, values ) : filteredSeq\n *\n * \t\tfilters 'seq' entries with corresponding entry in values\n *\n *\n * Methods of the top-level container (textures factorizations):\n *\n * .setValue( gl, name, value, textures )\n *\n * \t\tsets uniform with  name 'name' to 'value'\n *\n * .setOptional( gl, obj, prop )\n *\n * \t\tlike .set for an optional property of the object\n *\n */\n\nconst emptyTexture = new Texture();\nconst emptyTexture2dArray = new DataTexture2DArray();\nconst emptyTexture3d = new DataTexture3D();\nconst emptyCubeTexture = new CubeTexture();\n\n// --- Utilities ---\n\n// Array Caches (provide typed arrays for temporary by size)\n\nconst arrayCacheF32 = [];\nconst arrayCacheI32 = [];\n\n// Float32Array caches used for uploading Matrix uniforms\n\nconst mat4array = new Float32Array( 16 );\nconst mat3array = new Float32Array( 9 );\nconst mat2array = new Float32Array( 4 );\n\n// Flattening for arrays of vectors and matrices\n\nfunction flatten( array, nBlocks, blockSize ) {\n\n\tconst firstElem = array[ 0 ];\n\n\tif ( firstElem <= 0 || firstElem > 0 ) return array;\n\t// unoptimized: ! isNaN( firstElem )\n\t// see http://jacksondunstan.com/articles/983\n\n\tconst n = nBlocks * blockSize;\n\tlet r = arrayCacheF32[ n ];\n\n\tif ( r === undefined ) {\n\n\t\tr = new Float32Array( n );\n\t\tarrayCacheF32[ n ] = r;\n\n\t}\n\n\tif ( nBlocks !== 0 ) {\n\n\t\tfirstElem.toArray( r, 0 );\n\n\t\tfor ( let i = 1, offset = 0; i !== nBlocks; ++ i ) {\n\n\t\t\toffset += blockSize;\n\t\t\tarray[ i ].toArray( r, offset );\n\n\t\t}\n\n\t}\n\n\treturn r;\n\n}\n\nfunction arraysEqual( a, b ) {\n\n\tif ( a.length !== b.length ) return false;\n\n\tfor ( let i = 0, l = a.length; i < l; i ++ ) {\n\n\t\tif ( a[ i ] !== b[ i ] ) return false;\n\n\t}\n\n\treturn true;\n\n}\n\nfunction copyArray( a, b ) {\n\n\tfor ( let i = 0, l = b.length; i < l; i ++ ) {\n\n\t\ta[ i ] = b[ i ];\n\n\t}\n\n}\n\n// Texture unit allocation\n\nfunction allocTexUnits( textures, n ) {\n\n\tlet r = arrayCacheI32[ n ];\n\n\tif ( r === undefined ) {\n\n\t\tr = new Int32Array( n );\n\t\tarrayCacheI32[ n ] = r;\n\n\t}\n\n\tfor ( let i = 0; i !== n; ++ i ) {\n\n\t\tr[ i ] = textures.allocateTextureUnit();\n\n\t}\n\n\treturn r;\n\n}\n\n// --- Setters ---\n\n// Note: Defining these methods externally, because they come in a bunch\n// and this way their names minify.\n\n// Single scalar\n\nfunction setValueV1f( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( cache[ 0 ] === v ) return;\n\n\tgl.uniform1f( this.addr, v );\n\n\tcache[ 0 ] = v;\n\n}\n\n// Single float vector (from flat array or THREE.VectorN)\n\nfunction setValueV2f( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( v.x !== undefined ) {\n\n\t\tif ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y ) {\n\n\t\t\tgl.uniform2f( this.addr, v.x, v.y );\n\n\t\t\tcache[ 0 ] = v.x;\n\t\t\tcache[ 1 ] = v.y;\n\n\t\t}\n\n\t} else {\n\n\t\tif ( arraysEqual( cache, v ) ) return;\n\n\t\tgl.uniform2fv( this.addr, v );\n\n\t\tcopyArray( cache, v );\n\n\t}\n\n}\n\nfunction setValueV3f( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( v.x !== undefined ) {\n\n\t\tif ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z ) {\n\n\t\t\tgl.uniform3f( this.addr, v.x, v.y, v.z );\n\n\t\t\tcache[ 0 ] = v.x;\n\t\t\tcache[ 1 ] = v.y;\n\t\t\tcache[ 2 ] = v.z;\n\n\t\t}\n\n\t} else if ( v.r !== undefined ) {\n\n\t\tif ( cache[ 0 ] !== v.r || cache[ 1 ] !== v.g || cache[ 2 ] !== v.b ) {\n\n\t\t\tgl.uniform3f( this.addr, v.r, v.g, v.b );\n\n\t\t\tcache[ 0 ] = v.r;\n\t\t\tcache[ 1 ] = v.g;\n\t\t\tcache[ 2 ] = v.b;\n\n\t\t}\n\n\t} else {\n\n\t\tif ( arraysEqual( cache, v ) ) return;\n\n\t\tgl.uniform3fv( this.addr, v );\n\n\t\tcopyArray( cache, v );\n\n\t}\n\n}\n\nfunction setValueV4f( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( v.x !== undefined ) {\n\n\t\tif ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z || cache[ 3 ] !== v.w ) {\n\n\t\t\tgl.uniform4f( this.addr, v.x, v.y, v.z, v.w );\n\n\t\t\tcache[ 0 ] = v.x;\n\t\t\tcache[ 1 ] = v.y;\n\t\t\tcache[ 2 ] = v.z;\n\t\t\tcache[ 3 ] = v.w;\n\n\t\t}\n\n\t} else {\n\n\t\tif ( arraysEqual( cache, v ) ) return;\n\n\t\tgl.uniform4fv( this.addr, v );\n\n\t\tcopyArray( cache, v );\n\n\t}\n\n}\n\n// Single matrix (from flat array or MatrixN)\n\nfunction setValueM2( gl, v ) {\n\n\tconst cache = this.cache;\n\tconst elements = v.elements;\n\n\tif ( elements === undefined ) {\n\n\t\tif ( arraysEqual( cache, v ) ) return;\n\n\t\tgl.uniformMatrix2fv( this.addr, false, v );\n\n\t\tcopyArray( cache, v );\n\n\t} else {\n\n\t\tif ( arraysEqual( cache, elements ) ) return;\n\n\t\tmat2array.set( elements );\n\n\t\tgl.uniformMatrix2fv( this.addr, false, mat2array );\n\n\t\tcopyArray( cache, elements );\n\n\t}\n\n}\n\nfunction setValueM3( gl, v ) {\n\n\tconst cache = this.cache;\n\tconst elements = v.elements;\n\n\tif ( elements === undefined ) {\n\n\t\tif ( arraysEqual( cache, v ) ) return;\n\n\t\tgl.uniformMatrix3fv( this.addr, false, v );\n\n\t\tcopyArray( cache, v );\n\n\t} else {\n\n\t\tif ( arraysEqual( cache, elements ) ) return;\n\n\t\tmat3array.set( elements );\n\n\t\tgl.uniformMatrix3fv( this.addr, false, mat3array );\n\n\t\tcopyArray( cache, elements );\n\n\t}\n\n}\n\nfunction setValueM4( gl, v ) {\n\n\tconst cache = this.cache;\n\tconst elements = v.elements;\n\n\tif ( elements === undefined ) {\n\n\t\tif ( arraysEqual( cache, v ) ) return;\n\n\t\tgl.uniformMatrix4fv( this.addr, false, v );\n\n\t\tcopyArray( cache, v );\n\n\t} else {\n\n\t\tif ( arraysEqual( cache, elements ) ) return;\n\n\t\tmat4array.set( elements );\n\n\t\tgl.uniformMatrix4fv( this.addr, false, mat4array );\n\n\t\tcopyArray( cache, elements );\n\n\t}\n\n}\n\n// Single texture (2D / Cube)\n\nfunction setValueT1( gl, v, textures ) {\n\n\tconst cache = this.cache;\n\tconst unit = textures.allocateTextureUnit();\n\n\tif ( cache[ 0 ] !== unit ) {\n\n\t\tgl.uniform1i( this.addr, unit );\n\t\tcache[ 0 ] = unit;\n\n\t}\n\n\ttextures.safeSetTexture2D( v || emptyTexture, unit );\n\n}\n\nfunction setValueT2DArray1( gl, v, textures ) {\n\n\tconst cache = this.cache;\n\tconst unit = textures.allocateTextureUnit();\n\n\tif ( cache[ 0 ] !== unit ) {\n\n\t\tgl.uniform1i( this.addr, unit );\n\t\tcache[ 0 ] = unit;\n\n\t}\n\n\ttextures.setTexture2DArray( v || emptyTexture2dArray, unit );\n\n}\n\nfunction setValueT3D1( gl, v, textures ) {\n\n\tconst cache = this.cache;\n\tconst unit = textures.allocateTextureUnit();\n\n\tif ( cache[ 0 ] !== unit ) {\n\n\t\tgl.uniform1i( this.addr, unit );\n\t\tcache[ 0 ] = unit;\n\n\t}\n\n\ttextures.setTexture3D( v || emptyTexture3d, unit );\n\n}\n\nfunction setValueT6( gl, v, textures ) {\n\n\tconst cache = this.cache;\n\tconst unit = textures.allocateTextureUnit();\n\n\tif ( cache[ 0 ] !== unit ) {\n\n\t\tgl.uniform1i( this.addr, unit );\n\t\tcache[ 0 ] = unit;\n\n\t}\n\n\ttextures.safeSetTextureCube( v || emptyCubeTexture, unit );\n\n}\n\n// Integer / Boolean vectors or arrays thereof (always flat arrays)\n\nfunction setValueV1i( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( cache[ 0 ] === v ) return;\n\n\tgl.uniform1i( this.addr, v );\n\n\tcache[ 0 ] = v;\n\n}\n\nfunction setValueV2i( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( arraysEqual( cache, v ) ) return;\n\n\tgl.uniform2iv( this.addr, v );\n\n\tcopyArray( cache, v );\n\n}\n\nfunction setValueV3i( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( arraysEqual( cache, v ) ) return;\n\n\tgl.uniform3iv( this.addr, v );\n\n\tcopyArray( cache, v );\n\n}\n\nfunction setValueV4i( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( arraysEqual( cache, v ) ) return;\n\n\tgl.uniform4iv( this.addr, v );\n\n\tcopyArray( cache, v );\n\n}\n\n// uint\n\nfunction setValueV1ui( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( cache[ 0 ] === v ) return;\n\n\tgl.uniform1ui( this.addr, v );\n\n\tcache[ 0 ] = v;\n\n}\n\n// Helper to pick the right setter for the singular case\n\nfunction getSingularSetter( type ) {\n\n\tswitch ( type ) {\n\n\t\tcase 0x1406: return setValueV1f; // FLOAT\n\t\tcase 0x8b50: return setValueV2f; // _VEC2\n\t\tcase 0x8b51: return setValueV3f; // _VEC3\n\t\tcase 0x8b52: return setValueV4f; // _VEC4\n\n\t\tcase 0x8b5a: return setValueM2; // _MAT2\n\t\tcase 0x8b5b: return setValueM3; // _MAT3\n\t\tcase 0x8b5c: return setValueM4; // _MAT4\n\n\t\tcase 0x1404: case 0x8b56: return setValueV1i; // INT, BOOL\n\t\tcase 0x8b53: case 0x8b57: return setValueV2i; // _VEC2\n\t\tcase 0x8b54: case 0x8b58: return setValueV3i; // _VEC3\n\t\tcase 0x8b55: case 0x8b59: return setValueV4i; // _VEC4\n\n\t\tcase 0x1405: return setValueV1ui; // UINT\n\n\t\tcase 0x8b5e: // SAMPLER_2D\n\t\tcase 0x8d66: // SAMPLER_EXTERNAL_OES\n\t\tcase 0x8dca: // INT_SAMPLER_2D\n\t\tcase 0x8dd2: // UNSIGNED_INT_SAMPLER_2D\n\t\tcase 0x8b62: // SAMPLER_2D_SHADOW\n\t\t\treturn setValueT1;\n\n\t\tcase 0x8b5f: // SAMPLER_3D\n\t\tcase 0x8dcb: // INT_SAMPLER_3D\n\t\tcase 0x8dd3: // UNSIGNED_INT_SAMPLER_3D\n\t\t\treturn setValueT3D1;\n\n\t\tcase 0x8b60: // SAMPLER_CUBE\n\t\tcase 0x8dcc: // INT_SAMPLER_CUBE\n\t\tcase 0x8dd4: // UNSIGNED_INT_SAMPLER_CUBE\n\t\tcase 0x8dc5: // SAMPLER_CUBE_SHADOW\n\t\t\treturn setValueT6;\n\n\t\tcase 0x8dc1: // SAMPLER_2D_ARRAY\n\t\tcase 0x8dcf: // INT_SAMPLER_2D_ARRAY\n\t\tcase 0x8dd7: // UNSIGNED_INT_SAMPLER_2D_ARRAY\n\t\tcase 0x8dc4: // SAMPLER_2D_ARRAY_SHADOW\n\t\t\treturn setValueT2DArray1;\n\n\t}\n\n}\n\n// Array of scalars\nfunction setValueV1fArray( gl, v ) {\n\n\tgl.uniform1fv( this.addr, v );\n\n}\n\n// Integer / Boolean vectors or arrays thereof (always flat arrays)\nfunction setValueV1iArray( gl, v ) {\n\n\tgl.uniform1iv( this.addr, v );\n\n}\n\nfunction setValueV2iArray( gl, v ) {\n\n\tgl.uniform2iv( this.addr, v );\n\n}\n\nfunction setValueV3iArray( gl, v ) {\n\n\tgl.uniform3iv( this.addr, v );\n\n}\n\nfunction setValueV4iArray( gl, v ) {\n\n\tgl.uniform4iv( this.addr, v );\n\n}\n\n\n// Array of vectors (flat or from THREE classes)\n\nfunction setValueV2fArray( gl, v ) {\n\n\tconst data = flatten( v, this.size, 2 );\n\n\tgl.uniform2fv( this.addr, data );\n\n}\n\nfunction setValueV3fArray( gl, v ) {\n\n\tconst data = flatten( v, this.size, 3 );\n\n\tgl.uniform3fv( this.addr, data );\n\n}\n\nfunction setValueV4fArray( gl, v ) {\n\n\tconst data = flatten( v, this.size, 4 );\n\n\tgl.uniform4fv( this.addr, data );\n\n}\n\n// Array of matrices (flat or from THREE clases)\n\nfunction setValueM2Array( gl, v ) {\n\n\tconst data = flatten( v, this.size, 4 );\n\n\tgl.uniformMatrix2fv( this.addr, false, data );\n\n}\n\nfunction setValueM3Array( gl, v ) {\n\n\tconst data = flatten( v, this.size, 9 );\n\n\tgl.uniformMatrix3fv( this.addr, false, data );\n\n}\n\nfunction setValueM4Array( gl, v ) {\n\n\tconst data = flatten( v, this.size, 16 );\n\n\tgl.uniformMatrix4fv( this.addr, false, data );\n\n}\n\n// Array of textures (2D / Cube)\n\nfunction setValueT1Array( gl, v, textures ) {\n\n\tconst n = v.length;\n\n\tconst units = allocTexUnits( textures, n );\n\n\tgl.uniform1iv( this.addr, units );\n\n\tfor ( let i = 0; i !== n; ++ i ) {\n\n\t\ttextures.safeSetTexture2D( v[ i ] || emptyTexture, units[ i ] );\n\n\t}\n\n}\n\nfunction setValueT6Array( gl, v, textures ) {\n\n\tconst n = v.length;\n\n\tconst units = allocTexUnits( textures, n );\n\n\tgl.uniform1iv( this.addr, units );\n\n\tfor ( let i = 0; i !== n; ++ i ) {\n\n\t\ttextures.safeSetTextureCube( v[ i ] || emptyCubeTexture, units[ i ] );\n\n\t}\n\n}\n\n// Helper to pick the right setter for a pure (bottom-level) array\n\nfunction getPureArraySetter( type ) {\n\n\tswitch ( type ) {\n\n\t\tcase 0x1406: return setValueV1fArray; // FLOAT\n\t\tcase 0x8b50: return setValueV2fArray; // _VEC2\n\t\tcase 0x8b51: return setValueV3fArray; // _VEC3\n\t\tcase 0x8b52: return setValueV4fArray; // _VEC4\n\n\t\tcase 0x8b5a: return setValueM2Array; // _MAT2\n\t\tcase 0x8b5b: return setValueM3Array; // _MAT3\n\t\tcase 0x8b5c: return setValueM4Array; // _MAT4\n\n\t\tcase 0x1404: case 0x8b56: return setValueV1iArray; // INT, BOOL\n\t\tcase 0x8b53: case 0x8b57: return setValueV2iArray; // _VEC2\n\t\tcase 0x8b54: case 0x8b58: return setValueV3iArray; // _VEC3\n\t\tcase 0x8b55: case 0x8b59: return setValueV4iArray; // _VEC4\n\n\t\tcase 0x8b5e: // SAMPLER_2D\n\t\tcase 0x8d66: // SAMPLER_EXTERNAL_OES\n\t\tcase 0x8dca: // INT_SAMPLER_2D\n\t\tcase 0x8dd2: // UNSIGNED_INT_SAMPLER_2D\n\t\tcase 0x8b62: // SAMPLER_2D_SHADOW\n\t\t\treturn setValueT1Array;\n\n\t\tcase 0x8b60: // SAMPLER_CUBE\n\t\tcase 0x8dcc: // INT_SAMPLER_CUBE\n\t\tcase 0x8dd4: // UNSIGNED_INT_SAMPLER_CUBE\n\t\tcase 0x8dc5: // SAMPLER_CUBE_SHADOW\n\t\t\treturn setValueT6Array;\n\n\t}\n\n}\n\n// --- Uniform Classes ---\n\nfunction SingleUniform( id, activeInfo, addr ) {\n\n\tthis.id = id;\n\tthis.addr = addr;\n\tthis.cache = [];\n\tthis.setValue = getSingularSetter( activeInfo.type );\n\n\t// this.path = activeInfo.name; // DEBUG\n\n}\n\nfunction PureArrayUniform( id, activeInfo, addr ) {\n\n\tthis.id = id;\n\tthis.addr = addr;\n\tthis.cache = [];\n\tthis.size = activeInfo.size;\n\tthis.setValue = getPureArraySetter( activeInfo.type );\n\n\t// this.path = activeInfo.name; // DEBUG\n\n}\n\nPureArrayUniform.prototype.updateCache = function ( data ) {\n\n\tconst cache = this.cache;\n\n\tif ( data instanceof Float32Array && cache.length !== data.length ) {\n\n\t\tthis.cache = new Float32Array( data.length );\n\n\t}\n\n\tcopyArray( cache, data );\n\n};\n\nfunction StructuredUniform( id ) {\n\n\tthis.id = id;\n\n\tthis.seq = [];\n\tthis.map = {};\n\n}\n\nStructuredUniform.prototype.setValue = function ( gl, value, textures ) {\n\n\tconst seq = this.seq;\n\n\tfor ( let i = 0, n = seq.length; i !== n; ++ i ) {\n\n\t\tconst u = seq[ i ];\n\t\tu.setValue( gl, value[ u.id ], textures );\n\n\t}\n\n};\n\n// --- Top-level ---\n\n// Parser - builds up the property tree from the path strings\n\nconst RePathPart = /(\\w+)(\\])?(\\[|\\.)?/g;\n\n// extracts\n// \t- the identifier (member name or array index)\n//  - followed by an optional right bracket (found when array index)\n//  - followed by an optional left bracket or dot (type of subscript)\n//\n// Note: These portions can be read in a non-overlapping fashion and\n// allow straightforward parsing of the hierarchy that WebGL encodes\n// in the uniform names.\n\nfunction addUniform( container, uniformObject ) {\n\n\tcontainer.seq.push( uniformObject );\n\tcontainer.map[ uniformObject.id ] = uniformObject;\n\n}\n\nfunction parseUniform( activeInfo, addr, container ) {\n\n\tconst path = activeInfo.name,\n\t\tpathLength = path.length;\n\n\t// reset RegExp object, because of the early exit of a previous run\n\tRePathPart.lastIndex = 0;\n\n\twhile ( true ) {\n\n\t\tconst match = RePathPart.exec( path ),\n\t\t\tmatchEnd = RePathPart.lastIndex;\n\n\t\tlet id = match[ 1 ];\n\t\tconst idIsIndex = match[ 2 ] === ']',\n\t\t\tsubscript = match[ 3 ];\n\n\t\tif ( idIsIndex ) id = id | 0; // convert to integer\n\n\t\tif ( subscript === undefined || subscript === '[' && matchEnd + 2 === pathLength ) {\n\n\t\t\t// bare name or \"pure\" bottom-level array \"[0]\" suffix\n\n\t\t\taddUniform( container, subscript === undefined ?\n\t\t\t\tnew SingleUniform( id, activeInfo, addr ) :\n\t\t\t\tnew PureArrayUniform( id, activeInfo, addr ) );\n\n\t\t\tbreak;\n\n\t\t} else {\n\n\t\t\t// step into inner node / create it in case it doesn't exist\n\n\t\t\tconst map = container.map;\n\t\t\tlet next = map[ id ];\n\n\t\t\tif ( next === undefined ) {\n\n\t\t\t\tnext = new StructuredUniform( id );\n\t\t\t\taddUniform( container, next );\n\n\t\t\t}\n\n\t\t\tcontainer = next;\n\n\t\t}\n\n\t}\n\n}\n\n// Root Container\n\nfunction WebGLUniforms( gl, program ) {\n\n\tthis.seq = [];\n\tthis.map = {};\n\n\tconst n = gl.getProgramParameter( program, 35718 );\n\n\tfor ( let i = 0; i < n; ++ i ) {\n\n\t\tconst info = gl.getActiveUniform( program, i ),\n\t\t\taddr = gl.getUniformLocation( program, info.name );\n\n\t\tparseUniform( info, addr, this );\n\n\t}\n\n}\n\nWebGLUniforms.prototype.setValue = function ( gl, name, value, textures ) {\n\n\tconst u = this.map[ name ];\n\n\tif ( u !== undefined ) u.setValue( gl, value, textures );\n\n};\n\nWebGLUniforms.prototype.setOptional = function ( gl, object, name ) {\n\n\tconst v = object[ name ];\n\n\tif ( v !== undefined ) this.setValue( gl, name, v );\n\n};\n\n\n// Static interface\n\nWebGLUniforms.upload = function ( gl, seq, values, textures ) {\n\n\tfor ( let i = 0, n = seq.length; i !== n; ++ i ) {\n\n\t\tconst u = seq[ i ],\n\t\t\tv = values[ u.id ];\n\n\t\tif ( v.needsUpdate !== false ) {\n\n\t\t\t// note: always updating when .needsUpdate is undefined\n\t\t\tu.setValue( gl, v.value, textures );\n\n\t\t}\n\n\t}\n\n};\n\nWebGLUniforms.seqWithValue = function ( seq, values ) {\n\n\tconst r = [];\n\n\tfor ( let i = 0, n = seq.length; i !== n; ++ i ) {\n\n\t\tconst u = seq[ i ];\n\t\tif ( u.id in values ) r.push( u );\n\n\t}\n\n\treturn r;\n\n};\n\nfunction WebGLShader( gl, type, string ) {\n\n\tconst shader = gl.createShader( type );\n\n\tgl.shaderSource( shader, string );\n\tgl.compileShader( shader );\n\n\treturn shader;\n\n}\n\nlet programIdCount = 0;\n\nfunction addLineNumbers( string ) {\n\n\tconst lines = string.split( '\\n' );\n\n\tfor ( let i = 0; i < lines.length; i ++ ) {\n\n\t\tlines[ i ] = ( i + 1 ) + ': ' + lines[ i ];\n\n\t}\n\n\treturn lines.join( '\\n' );\n\n}\n\nfunction getEncodingComponents( encoding ) {\n\n\tswitch ( encoding ) {\n\n\t\tcase LinearEncoding:\n\t\t\treturn [ 'Linear', '( value )' ];\n\t\tcase sRGBEncoding:\n\t\t\treturn [ 'sRGB', '( value )' ];\n\t\tcase RGBEEncoding:\n\t\t\treturn [ 'RGBE', '( value )' ];\n\t\tcase RGBM7Encoding:\n\t\t\treturn [ 'RGBM', '( value, 7.0 )' ];\n\t\tcase RGBM16Encoding:\n\t\t\treturn [ 'RGBM', '( value, 16.0 )' ];\n\t\tcase RGBDEncoding:\n\t\t\treturn [ 'RGBD', '( value, 256.0 )' ];\n\t\tcase GammaEncoding:\n\t\t\treturn [ 'Gamma', '( value, float( GAMMA_FACTOR ) )' ];\n\t\tcase LogLuvEncoding:\n\t\t\treturn [ 'LogLuv', '( value )' ];\n\t\tdefault:\n\t\t\tconsole.warn( 'THREE.WebGLProgram: Unsupported encoding:', encoding );\n\t\t\treturn [ 'Linear', '( value )' ];\n\n\t}\n\n}\n\nfunction getShaderErrors( gl, shader, type ) {\n\n\tconst status = gl.getShaderParameter( shader, 35713 );\n\tconst log = gl.getShaderInfoLog( shader ).trim();\n\n\tif ( status && log === '' ) return '';\n\n\t// --enable-privileged-webgl-extension\n\t// console.log( '**' + type + '**', gl.getExtension( 'WEBGL_debug_shaders' ).getTranslatedShaderSource( shader ) );\n\n\tconst source = gl.getShaderSource( shader );\n\n\treturn 'THREE.WebGLShader: gl.getShaderInfoLog() ' + type + '\\n' + log + addLineNumbers( source );\n\n}\n\nfunction getTexelDecodingFunction( functionName, encoding ) {\n\n\tconst components = getEncodingComponents( encoding );\n\treturn 'vec4 ' + functionName + '( vec4 value ) { return ' + components[ 0 ] + 'ToLinear' + components[ 1 ] + '; }';\n\n}\n\nfunction getTexelEncodingFunction( functionName, encoding ) {\n\n\tconst components = getEncodingComponents( encoding );\n\treturn 'vec4 ' + functionName + '( vec4 value ) { return LinearTo' + components[ 0 ] + components[ 1 ] + '; }';\n\n}\n\nfunction getToneMappingFunction( functionName, toneMapping ) {\n\n\tlet toneMappingName;\n\n\tswitch ( toneMapping ) {\n\n\t\tcase LinearToneMapping:\n\t\t\ttoneMappingName = 'Linear';\n\t\t\tbreak;\n\n\t\tcase ReinhardToneMapping:\n\t\t\ttoneMappingName = 'Reinhard';\n\t\t\tbreak;\n\n\t\tcase CineonToneMapping:\n\t\t\ttoneMappingName = 'OptimizedCineon';\n\t\t\tbreak;\n\n\t\tcase ACESFilmicToneMapping:\n\t\t\ttoneMappingName = 'ACESFilmic';\n\t\t\tbreak;\n\n\t\tcase CustomToneMapping:\n\t\t\ttoneMappingName = 'Custom';\n\t\t\tbreak;\n\n\t\tdefault:\n\t\t\tconsole.warn( 'THREE.WebGLProgram: Unsupported toneMapping:', toneMapping );\n\t\t\ttoneMappingName = 'Linear';\n\n\t}\n\n\treturn 'vec3 ' + functionName + '( vec3 color ) { return ' + toneMappingName + 'ToneMapping( color ); }';\n\n}\n\nfunction generateExtensions( parameters ) {\n\n\tconst chunks = [\n\t\t( parameters.extensionDerivatives || parameters.envMapCubeUV || parameters.bumpMap || parameters.tangentSpaceNormalMap || parameters.clearcoatNormalMap || parameters.flatShading || parameters.shaderID === 'physical' ) ? '#extension GL_OES_standard_derivatives : enable' : '',\n\t\t( parameters.extensionFragDepth || parameters.logarithmicDepthBuffer ) && parameters.rendererExtensionFragDepth ? '#extension GL_EXT_frag_depth : enable' : '',\n\t\t( parameters.extensionDrawBuffers && parameters.rendererExtensionDrawBuffers ) ? '#extension GL_EXT_draw_buffers : require' : '',\n\t\t( parameters.extensionShaderTextureLOD || parameters.envMap ) && parameters.rendererExtensionShaderTextureLod ? '#extension GL_EXT_shader_texture_lod : enable' : ''\n\t];\n\n\treturn chunks.filter( filterEmptyLine ).join( '\\n' );\n\n}\n\nfunction generateDefines( defines ) {\n\n\tconst chunks = [];\n\n\tfor ( const name in defines ) {\n\n\t\tconst value = defines[ name ];\n\n\t\tif ( value === false ) continue;\n\n\t\tchunks.push( '#define ' + name + ' ' + value );\n\n\t}\n\n\treturn chunks.join( '\\n' );\n\n}\n\nfunction fetchAttributeLocations( gl, program ) {\n\n\tconst attributes = {};\n\n\tconst n = gl.getProgramParameter( program, 35721 );\n\n\tfor ( let i = 0; i < n; i ++ ) {\n\n\t\tconst info = gl.getActiveAttrib( program, i );\n\t\tconst name = info.name;\n\n\t\t// console.log( 'THREE.WebGLProgram: ACTIVE VERTEX ATTRIBUTE:', name, i );\n\n\t\tattributes[ name ] = gl.getAttribLocation( program, name );\n\n\t}\n\n\treturn attributes;\n\n}\n\nfunction filterEmptyLine( string ) {\n\n\treturn string !== '';\n\n}\n\nfunction replaceLightNums( string, parameters ) {\n\n\treturn string\n\t\t.replace( /NUM_DIR_LIGHTS/g, parameters.numDirLights )\n\t\t.replace( /NUM_SPOT_LIGHTS/g, parameters.numSpotLights )\n\t\t.replace( /NUM_RECT_AREA_LIGHTS/g, parameters.numRectAreaLights )\n\t\t.replace( /NUM_POINT_LIGHTS/g, parameters.numPointLights )\n\t\t.replace( /NUM_HEMI_LIGHTS/g, parameters.numHemiLights )\n\t\t.replace( /NUM_DIR_LIGHT_SHADOWS/g, parameters.numDirLightShadows )\n\t\t.replace( /NUM_SPOT_LIGHT_SHADOWS/g, parameters.numSpotLightShadows )\n\t\t.replace( /NUM_POINT_LIGHT_SHADOWS/g, parameters.numPointLightShadows );\n\n}\n\nfunction replaceClippingPlaneNums( string, parameters ) {\n\n\treturn string\n\t\t.replace( /NUM_CLIPPING_PLANES/g, parameters.numClippingPlanes )\n\t\t.replace( /UNION_CLIPPING_PLANES/g, ( parameters.numClippingPlanes - parameters.numClipIntersection ) );\n\n}\n\n// Resolve Includes\n\nconst includePattern = /^[ \\t]*#include +<([\\w\\d./]+)>/gm;\n\nfunction resolveIncludes( string ) {\n\n\treturn string.replace( includePattern, includeReplacer );\n\n}\n\nfunction includeReplacer( match, include ) {\n\n\tconst string = ShaderChunk[ include ];\n\n\tif ( string === undefined ) {\n\n\t\tthrow new Error( 'Can not resolve #include <' + include + '>' );\n\n\t}\n\n\treturn resolveIncludes( string );\n\n}\n\n// Unroll Loops\n\nconst deprecatedUnrollLoopPattern = /#pragma unroll_loop[\\s]+?for \\( int i \\= (\\d+)\\; i < (\\d+)\\; i \\+\\+ \\) \\{([\\s\\S]+?)(?=\\})\\}/g;\nconst unrollLoopPattern = /#pragma unroll_loop_start\\s+for\\s*\\(\\s*int\\s+i\\s*=\\s*(\\d+)\\s*;\\s*i\\s*<\\s*(\\d+)\\s*;\\s*i\\s*\\+\\+\\s*\\)\\s*{([\\s\\S]+?)}\\s+#pragma unroll_loop_end/g;\n\nfunction unrollLoops( string ) {\n\n\treturn string\n\t\t.replace( unrollLoopPattern, loopReplacer )\n\t\t.replace( deprecatedUnrollLoopPattern, deprecatedLoopReplacer );\n\n}\n\nfunction deprecatedLoopReplacer( match, start, end, snippet ) {\n\n\tconsole.warn( 'WebGLProgram: #pragma unroll_loop shader syntax is deprecated. Please use #pragma unroll_loop_start syntax instead.' );\n\treturn loopReplacer( match, start, end, snippet );\n\n}\n\nfunction loopReplacer( match, start, end, snippet ) {\n\n\tlet string = '';\n\n\tfor ( let i = parseInt( start ); i < parseInt( end ); i ++ ) {\n\n\t\tstring += snippet\n\t\t\t.replace( /\\[\\s*i\\s*\\]/g, '[ ' + i + ' ]' )\n\t\t\t.replace( /UNROLLED_LOOP_INDEX/g, i );\n\n\t}\n\n\treturn string;\n\n}\n\n//\n\nfunction generatePrecision( parameters ) {\n\n\tlet precisionstring = 'precision ' + parameters.precision + ' float;\\nprecision ' + parameters.precision + ' int;';\n\n\tif ( parameters.precision === 'highp' ) {\n\n\t\tprecisionstring += '\\n#define HIGH_PRECISION';\n\n\t} else if ( parameters.precision === 'mediump' ) {\n\n\t\tprecisionstring += '\\n#define MEDIUM_PRECISION';\n\n\t} else if ( parameters.precision === 'lowp' ) {\n\n\t\tprecisionstring += '\\n#define LOW_PRECISION';\n\n\t}\n\n\treturn precisionstring;\n\n}\n\nfunction generateShadowMapTypeDefine( parameters ) {\n\n\tlet shadowMapTypeDefine = 'SHADOWMAP_TYPE_BASIC';\n\n\tif ( parameters.shadowMapType === PCFShadowMap ) {\n\n\t\tshadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF';\n\n\t} else if ( parameters.shadowMapType === PCFSoftShadowMap ) {\n\n\t\tshadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF_SOFT';\n\n\t} else if ( parameters.shadowMapType === VSMShadowMap ) {\n\n\t\tshadowMapTypeDefine = 'SHADOWMAP_TYPE_VSM';\n\n\t}\n\n\treturn shadowMapTypeDefine;\n\n}\n\nfunction generateEnvMapTypeDefine( parameters ) {\n\n\tlet envMapTypeDefine = 'ENVMAP_TYPE_CUBE';\n\n\tif ( parameters.envMap ) {\n\n\t\tswitch ( parameters.envMapMode ) {\n\n\t\t\tcase CubeReflectionMapping:\n\t\t\tcase CubeRefractionMapping:\n\t\t\t\tenvMapTypeDefine = 'ENVMAP_TYPE_CUBE';\n\t\t\t\tbreak;\n\n\t\t\tcase CubeUVReflectionMapping:\n\t\t\tcase CubeUVRefractionMapping:\n\t\t\t\tenvMapTypeDefine = 'ENVMAP_TYPE_CUBE_UV';\n\t\t\t\tbreak;\n\n\t\t}\n\n\t}\n\n\treturn envMapTypeDefine;\n\n}\n\nfunction generateEnvMapModeDefine( parameters ) {\n\n\tlet envMapModeDefine = 'ENVMAP_MODE_REFLECTION';\n\n\tif ( parameters.envMap ) {\n\n\t\tswitch ( parameters.envMapMode ) {\n\n\t\t\tcase CubeRefractionMapping:\n\t\t\tcase CubeUVRefractionMapping:\n\n\t\t\t\tenvMapModeDefine = 'ENVMAP_MODE_REFRACTION';\n\t\t\t\tbreak;\n\n\t\t}\n\n\t}\n\n\treturn envMapModeDefine;\n\n}\n\nfunction generateEnvMapBlendingDefine( parameters ) {\n\n\tlet envMapBlendingDefine = 'ENVMAP_BLENDING_NONE';\n\n\tif ( parameters.envMap ) {\n\n\t\tswitch ( parameters.combine ) {\n\n\t\t\tcase MultiplyOperation:\n\t\t\t\tenvMapBlendingDefine = 'ENVMAP_BLENDING_MULTIPLY';\n\t\t\t\tbreak;\n\n\t\t\tcase MixOperation:\n\t\t\t\tenvMapBlendingDefine = 'ENVMAP_BLENDING_MIX';\n\t\t\t\tbreak;\n\n\t\t\tcase AddOperation:\n\t\t\t\tenvMapBlendingDefine = 'ENVMAP_BLENDING_ADD';\n\t\t\t\tbreak;\n\n\t\t}\n\n\t}\n\n\treturn envMapBlendingDefine;\n\n}\n\nfunction WebGLProgram( renderer, cacheKey, parameters, bindingStates ) {\n\n\tconst gl = renderer.getContext();\n\n\tconst defines = parameters.defines;\n\n\tlet vertexShader = parameters.vertexShader;\n\tlet fragmentShader = parameters.fragmentShader;\n\n\tconst shadowMapTypeDefine = generateShadowMapTypeDefine( parameters );\n\tconst envMapTypeDefine = generateEnvMapTypeDefine( parameters );\n\tconst envMapModeDefine = generateEnvMapModeDefine( parameters );\n\tconst envMapBlendingDefine = generateEnvMapBlendingDefine( parameters );\n\n\n\tconst gammaFactorDefine = ( renderer.gammaFactor > 0 ) ? renderer.gammaFactor : 1.0;\n\n\tconst customExtensions = parameters.isWebGL2 ? '' : generateExtensions( parameters );\n\n\tconst customDefines = generateDefines( defines );\n\n\tconst program = gl.createProgram();\n\n\tlet prefixVertex, prefixFragment;\n\tlet versionString = parameters.glslVersion ? '#version ' + parameters.glslVersion + '\\n' : '';\n\n\tif ( parameters.isRawShaderMaterial ) {\n\n\t\tprefixVertex = [\n\n\t\t\tcustomDefines\n\n\t\t].filter( filterEmptyLine ).join( '\\n' );\n\n\t\tif ( prefixVertex.length > 0 ) {\n\n\t\t\tprefixVertex += '\\n';\n\n\t\t}\n\n\t\tprefixFragment = [\n\n\t\t\tcustomExtensions,\n\t\t\tcustomDefines\n\n\t\t].filter( filterEmptyLine ).join( '\\n' );\n\n\t\tif ( prefixFragment.length > 0 ) {\n\n\t\t\tprefixFragment += '\\n';\n\n\t\t}\n\n\t} else {\n\n\t\tprefixVertex = [\n\n\t\t\tgeneratePrecision( parameters ),\n\n\t\t\t'#define SHADER_NAME ' + parameters.shaderName,\n\n\t\t\tcustomDefines,\n\n\t\t\tparameters.instancing ? '#define USE_INSTANCING' : '',\n\t\t\tparameters.instancingColor ? '#define USE_INSTANCING_COLOR' : '',\n\n\t\t\tparameters.supportsVertexTextures ? '#define VERTEX_TEXTURES' : '',\n\n\t\t\t'#define GAMMA_FACTOR ' + gammaFactorDefine,\n\n\t\t\t'#define MAX_BONES ' + parameters.maxBones,\n\t\t\t( parameters.useFog && parameters.fog ) ? '#define USE_FOG' : '',\n\t\t\t( parameters.useFog && parameters.fogExp2 ) ? '#define FOG_EXP2' : '',\n\n\t\t\tparameters.map ? '#define USE_MAP' : '',\n\t\t\tparameters.envMap ? '#define USE_ENVMAP' : '',\n\t\t\tparameters.envMap ? '#define ' + envMapModeDefine : '',\n\t\t\tparameters.lightMap ? '#define USE_LIGHTMAP' : '',\n\t\t\tparameters.aoMap ? '#define USE_AOMAP' : '',\n\t\t\tparameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '',\n\t\t\tparameters.bumpMap ? '#define USE_BUMPMAP' : '',\n\t\t\tparameters.normalMap ? '#define USE_NORMALMAP' : '',\n\t\t\t( parameters.normalMap && parameters.objectSpaceNormalMap ) ? '#define OBJECTSPACE_NORMALMAP' : '',\n\t\t\t( parameters.normalMap && parameters.tangentSpaceNormalMap ) ? '#define TANGENTSPACE_NORMALMAP' : '',\n\n\t\t\tparameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '',\n\t\t\tparameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '',\n\t\t\tparameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '',\n\t\t\tparameters.displacementMap && parameters.supportsVertexTextures ? '#define USE_DISPLACEMENTMAP' : '',\n\t\t\tparameters.specularMap ? '#define USE_SPECULARMAP' : '',\n\t\t\tparameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '',\n\t\t\tparameters.metalnessMap ? '#define USE_METALNESSMAP' : '',\n\t\t\tparameters.alphaMap ? '#define USE_ALPHAMAP' : '',\n\t\t\tparameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '',\n\n\t\t\tparameters.vertexTangents ? '#define USE_TANGENT' : '',\n\t\t\tparameters.vertexColors ? '#define USE_COLOR' : '',\n\t\t\tparameters.vertexUvs ? '#define USE_UV' : '',\n\t\t\tparameters.uvsVertexOnly ? '#define UVS_VERTEX_ONLY' : '',\n\n\t\t\tparameters.flatShading ? '#define FLAT_SHADED' : '',\n\n\t\t\tparameters.skinning ? '#define USE_SKINNING' : '',\n\t\t\tparameters.useVertexTexture ? '#define BONE_TEXTURE' : '',\n\n\t\t\tparameters.morphTargets ? '#define USE_MORPHTARGETS' : '',\n\t\t\tparameters.morphNormals && parameters.flatShading === false ? '#define USE_MORPHNORMALS' : '',\n\t\t\tparameters.doubleSided ? '#define DOUBLE_SIDED' : '',\n\t\t\tparameters.flipSided ? '#define FLIP_SIDED' : '',\n\n\t\t\tparameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '',\n\t\t\tparameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '',\n\n\t\t\tparameters.sizeAttenuation ? '#define USE_SIZEATTENUATION' : '',\n\n\t\t\tparameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '',\n\t\t\t( parameters.logarithmicDepthBuffer && parameters.rendererExtensionFragDepth ) ? '#define USE_LOGDEPTHBUF_EXT' : '',\n\n\t\t\t'uniform mat4 modelMatrix;',\n\t\t\t'uniform mat4 modelViewMatrix;',\n\t\t\t'uniform mat4 projectionMatrix;',\n\t\t\t'uniform mat4 viewMatrix;',\n\t\t\t'uniform mat3 normalMatrix;',\n\t\t\t'uniform vec3 cameraPosition;',\n\t\t\t'uniform bool isOrthographic;',\n\n\t\t\t'#ifdef USE_INSTANCING',\n\n\t\t\t'\tattribute mat4 instanceMatrix;',\n\n\t\t\t'#endif',\n\n\t\t\t'#ifdef USE_INSTANCING_COLOR',\n\n\t\t\t'\tattribute vec3 instanceColor;',\n\n\t\t\t'#endif',\n\n\t\t\t'attribute vec3 position;',\n\t\t\t'attribute vec3 normal;',\n\t\t\t'attribute vec2 uv;',\n\n\t\t\t'#ifdef USE_TANGENT',\n\n\t\t\t'\tattribute vec4 tangent;',\n\n\t\t\t'#endif',\n\n\t\t\t'#ifdef USE_COLOR',\n\n\t\t\t'\tattribute vec3 color;',\n\n\t\t\t'#endif',\n\n\t\t\t'#ifdef USE_MORPHTARGETS',\n\n\t\t\t'\tattribute vec3 morphTarget0;',\n\t\t\t'\tattribute vec3 morphTarget1;',\n\t\t\t'\tattribute vec3 morphTarget2;',\n\t\t\t'\tattribute vec3 morphTarget3;',\n\n\t\t\t'\t#ifdef USE_MORPHNORMALS',\n\n\t\t\t'\t\tattribute vec3 morphNormal0;',\n\t\t\t'\t\tattribute vec3 morphNormal1;',\n\t\t\t'\t\tattribute vec3 morphNormal2;',\n\t\t\t'\t\tattribute vec3 morphNormal3;',\n\n\t\t\t'\t#else',\n\n\t\t\t'\t\tattribute vec3 morphTarget4;',\n\t\t\t'\t\tattribute vec3 morphTarget5;',\n\t\t\t'\t\tattribute vec3 morphTarget6;',\n\t\t\t'\t\tattribute vec3 morphTarget7;',\n\n\t\t\t'\t#endif',\n\n\t\t\t'#endif',\n\n\t\t\t'#ifdef USE_SKINNING',\n\n\t\t\t'\tattribute vec4 skinIndex;',\n\t\t\t'\tattribute vec4 skinWeight;',\n\n\t\t\t'#endif',\n\n\t\t\t'\\n'\n\n\t\t].filter( filterEmptyLine ).join( '\\n' );\n\n\t\tprefixFragment = [\n\n\t\t\tcustomExtensions,\n\n\t\t\tgeneratePrecision( parameters ),\n\n\t\t\t'#define SHADER_NAME ' + parameters.shaderName,\n\n\t\t\tcustomDefines,\n\n\t\t\tparameters.alphaTest ? '#define ALPHATEST ' + parameters.alphaTest + ( parameters.alphaTest % 1 ? '' : '.0' ) : '', // add '.0' if integer\n\n\t\t\t'#define GAMMA_FACTOR ' + gammaFactorDefine,\n\n\t\t\t( parameters.useFog && parameters.fog ) ? '#define USE_FOG' : '',\n\t\t\t( parameters.useFog && parameters.fogExp2 ) ? '#define FOG_EXP2' : '',\n\n\t\t\tparameters.map ? '#define USE_MAP' : '',\n\t\t\tparameters.matcap ? '#define USE_MATCAP' : '',\n\t\t\tparameters.envMap ? '#define USE_ENVMAP' : '',\n\t\t\tparameters.envMap ? '#define ' + envMapTypeDefine : '',\n\t\t\tparameters.envMap ? '#define ' + envMapModeDefine : '',\n\t\t\tparameters.envMap ? '#define ' + envMapBlendingDefine : '',\n\t\t\tparameters.lightMap ? '#define USE_LIGHTMAP' : '',\n\t\t\tparameters.aoMap ? '#define USE_AOMAP' : '',\n\t\t\tparameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '',\n\t\t\tparameters.bumpMap ? '#define USE_BUMPMAP' : '',\n\t\t\tparameters.normalMap ? '#define USE_NORMALMAP' : '',\n\t\t\t( parameters.normalMap && parameters.objectSpaceNormalMap ) ? '#define OBJECTSPACE_NORMALMAP' : '',\n\t\t\t( parameters.normalMap && parameters.tangentSpaceNormalMap ) ? '#define TANGENTSPACE_NORMALMAP' : '',\n\t\t\tparameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '',\n\t\t\tparameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '',\n\t\t\tparameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '',\n\t\t\tparameters.specularMap ? '#define USE_SPECULARMAP' : '',\n\t\t\tparameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '',\n\t\t\tparameters.metalnessMap ? '#define USE_METALNESSMAP' : '',\n\t\t\tparameters.alphaMap ? '#define USE_ALPHAMAP' : '',\n\n\t\t\tparameters.sheen ? '#define USE_SHEEN' : '',\n\t\t\tparameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '',\n\n\t\t\tparameters.vertexTangents ? '#define USE_TANGENT' : '',\n\t\t\tparameters.vertexColors || parameters.instancingColor ? '#define USE_COLOR' : '',\n\t\t\tparameters.vertexUvs ? '#define USE_UV' : '',\n\t\t\tparameters.uvsVertexOnly ? '#define UVS_VERTEX_ONLY' : '',\n\n\t\t\tparameters.gradientMap ? '#define USE_GRADIENTMAP' : '',\n\n\t\t\tparameters.flatShading ? '#define FLAT_SHADED' : '',\n\n\t\t\tparameters.doubleSided ? '#define DOUBLE_SIDED' : '',\n\t\t\tparameters.flipSided ? '#define FLIP_SIDED' : '',\n\n\t\t\tparameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '',\n\t\t\tparameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '',\n\n\t\t\tparameters.premultipliedAlpha ? '#define PREMULTIPLIED_ALPHA' : '',\n\n\t\t\tparameters.physicallyCorrectLights ? '#define PHYSICALLY_CORRECT_LIGHTS' : '',\n\n\t\t\tparameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '',\n\t\t\t( parameters.logarithmicDepthBuffer && parameters.rendererExtensionFragDepth ) ? '#define USE_LOGDEPTHBUF_EXT' : '',\n\n\t\t\t( ( parameters.extensionShaderTextureLOD || parameters.envMap ) && parameters.rendererExtensionShaderTextureLod ) ? '#define TEXTURE_LOD_EXT' : '',\n\n\t\t\t'uniform mat4 viewMatrix;',\n\t\t\t'uniform vec3 cameraPosition;',\n\t\t\t'uniform bool isOrthographic;',\n\n\t\t\t( parameters.toneMapping !== NoToneMapping ) ? '#define TONE_MAPPING' : '',\n\t\t\t( parameters.toneMapping !== NoToneMapping ) ? ShaderChunk[ 'tonemapping_pars_fragment' ] : '', // this code is required here because it is used by the toneMapping() function defined below\n\t\t\t( parameters.toneMapping !== NoToneMapping ) ? getToneMappingFunction( 'toneMapping', parameters.toneMapping ) : '',\n\n\t\t\tparameters.dithering ? '#define DITHERING' : '',\n\n\t\t\tShaderChunk[ 'encodings_pars_fragment' ], // this code is required here because it is used by the various encoding/decoding function defined below\n\t\t\tparameters.map ? getTexelDecodingFunction( 'mapTexelToLinear', parameters.mapEncoding ) : '',\n\t\t\tparameters.matcap ? getTexelDecodingFunction( 'matcapTexelToLinear', parameters.matcapEncoding ) : '',\n\t\t\tparameters.envMap ? getTexelDecodingFunction( 'envMapTexelToLinear', parameters.envMapEncoding ) : '',\n\t\t\tparameters.emissiveMap ? getTexelDecodingFunction( 'emissiveMapTexelToLinear', parameters.emissiveMapEncoding ) : '',\n\t\t\tparameters.lightMap ? getTexelDecodingFunction( 'lightMapTexelToLinear', parameters.lightMapEncoding ) : '',\n\t\t\tgetTexelEncodingFunction( 'linearToOutputTexel', parameters.outputEncoding ),\n\n\t\t\tparameters.depthPacking ? '#define DEPTH_PACKING ' + parameters.depthPacking : '',\n\n\t\t\t'\\n'\n\n\t\t].filter( filterEmptyLine ).join( '\\n' );\n\n\t}\n\n\tvertexShader = resolveIncludes( vertexShader );\n\tvertexShader = replaceLightNums( vertexShader, parameters );\n\tvertexShader = replaceClippingPlaneNums( vertexShader, parameters );\n\n\tfragmentShader = resolveIncludes( fragmentShader );\n\tfragmentShader = replaceLightNums( fragmentShader, parameters );\n\tfragmentShader = replaceClippingPlaneNums( fragmentShader, parameters );\n\n\tvertexShader = unrollLoops( vertexShader );\n\tfragmentShader = unrollLoops( fragmentShader );\n\n\tif ( parameters.isWebGL2 && parameters.isRawShaderMaterial !== true ) {\n\n\t\t// GLSL 3.0 conversion for built-in materials and ShaderMaterial\n\n\t\tversionString = '#version 300 es\\n';\n\n\t\tprefixVertex = [\n\t\t\t'#define attribute in',\n\t\t\t'#define varying out',\n\t\t\t'#define texture2D texture'\n\t\t].join( '\\n' ) + '\\n' + prefixVertex;\n\n\t\tprefixFragment = [\n\t\t\t'#define varying in',\n\t\t\t( parameters.glslVersion === GLSL3 ) ? '' : 'out highp vec4 pc_fragColor;',\n\t\t\t( parameters.glslVersion === GLSL3 ) ? '' : '#define gl_FragColor pc_fragColor',\n\t\t\t'#define gl_FragDepthEXT gl_FragDepth',\n\t\t\t'#define texture2D texture',\n\t\t\t'#define textureCube texture',\n\t\t\t'#define texture2DProj textureProj',\n\t\t\t'#define texture2DLodEXT textureLod',\n\t\t\t'#define texture2DProjLodEXT textureProjLod',\n\t\t\t'#define textureCubeLodEXT textureLod',\n\t\t\t'#define texture2DGradEXT textureGrad',\n\t\t\t'#define texture2DProjGradEXT textureProjGrad',\n\t\t\t'#define textureCubeGradEXT textureGrad'\n\t\t].join( '\\n' ) + '\\n' + prefixFragment;\n\n\t}\n\n\tconst vertexGlsl = versionString + prefixVertex + vertexShader;\n\tconst fragmentGlsl = versionString + prefixFragment + fragmentShader;\n\n\t// console.log( '*VERTEX*', vertexGlsl );\n\t// console.log( '*FRAGMENT*', fragmentGlsl );\n\n\tconst glVertexShader = WebGLShader( gl, 35633, vertexGlsl );\n\tconst glFragmentShader = WebGLShader( gl, 35632, fragmentGlsl );\n\n\tgl.attachShader( program, glVertexShader );\n\tgl.attachShader( program, glFragmentShader );\n\n\t// Force a particular attribute to index 0.\n\n\tif ( parameters.index0AttributeName !== undefined ) {\n\n\t\tgl.bindAttribLocation( program, 0, parameters.index0AttributeName );\n\n\t} else if ( parameters.morphTargets === true ) {\n\n\t\t// programs with morphTargets displace position out of attribute 0\n\t\tgl.bindAttribLocation( program, 0, 'position' );\n\n\t}\n\n\tgl.linkProgram( program );\n\n\t// check for link errors\n\tif ( renderer.debug.checkShaderErrors ) {\n\n\t\tconst programLog = gl.getProgramInfoLog( program ).trim();\n\t\tconst vertexLog = gl.getShaderInfoLog( glVertexShader ).trim();\n\t\tconst fragmentLog = gl.getShaderInfoLog( glFragmentShader ).trim();\n\n\t\tlet runnable = true;\n\t\tlet haveDiagnostics = true;\n\n\t\tif ( gl.getProgramParameter( program, 35714 ) === false ) {\n\n\t\t\trunnable = false;\n\n\t\t\tconst vertexErrors = getShaderErrors( gl, glVertexShader, 'vertex' );\n\t\t\tconst fragmentErrors = getShaderErrors( gl, glFragmentShader, 'fragment' );\n\n\t\t\tconsole.error( 'THREE.WebGLProgram: shader error: ', gl.getError(), '35715', gl.getProgramParameter( program, 35715 ), 'gl.getProgramInfoLog', programLog, vertexErrors, fragmentErrors );\n\n\t\t} else if ( programLog !== '' ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLProgram: gl.getProgramInfoLog()', programLog );\n\n\t\t} else if ( vertexLog === '' || fragmentLog === '' ) {\n\n\t\t\thaveDiagnostics = false;\n\n\t\t}\n\n\t\tif ( haveDiagnostics ) {\n\n\t\t\tthis.diagnostics = {\n\n\t\t\t\trunnable: runnable,\n\n\t\t\t\tprogramLog: programLog,\n\n\t\t\t\tvertexShader: {\n\n\t\t\t\t\tlog: vertexLog,\n\t\t\t\t\tprefix: prefixVertex\n\n\t\t\t\t},\n\n\t\t\t\tfragmentShader: {\n\n\t\t\t\t\tlog: fragmentLog,\n\t\t\t\t\tprefix: prefixFragment\n\n\t\t\t\t}\n\n\t\t\t};\n\n\t\t}\n\n\t}\n\n\t// Clean up\n\n\t// Crashes in iOS9 and iOS10. #18402\n\t// gl.detachShader( program, glVertexShader );\n\t// gl.detachShader( program, glFragmentShader );\n\n\tgl.deleteShader( glVertexShader );\n\tgl.deleteShader( glFragmentShader );\n\n\t// set up caching for uniform locations\n\n\tlet cachedUniforms;\n\n\tthis.getUniforms = function () {\n\n\t\tif ( cachedUniforms === undefined ) {\n\n\t\t\tcachedUniforms = new WebGLUniforms( gl, program );\n\n\t\t}\n\n\t\treturn cachedUniforms;\n\n\t};\n\n\t// set up caching for attribute locations\n\n\tlet cachedAttributes;\n\n\tthis.getAttributes = function () {\n\n\t\tif ( cachedAttributes === undefined ) {\n\n\t\t\tcachedAttributes = fetchAttributeLocations( gl, program );\n\n\t\t}\n\n\t\treturn cachedAttributes;\n\n\t};\n\n\t// free resource\n\n\tthis.destroy = function () {\n\n\t\tbindingStates.releaseStatesOfProgram( this );\n\n\t\tgl.deleteProgram( program );\n\t\tthis.program = undefined;\n\n\t};\n\n\t//\n\n\tthis.name = parameters.shaderName;\n\tthis.id = programIdCount ++;\n\tthis.cacheKey = cacheKey;\n\tthis.usedTimes = 1;\n\tthis.program = program;\n\tthis.vertexShader = glVertexShader;\n\tthis.fragmentShader = glFragmentShader;\n\n\treturn this;\n\n}\n\nfunction WebGLPrograms( renderer, cubemaps, extensions, capabilities, bindingStates, clipping ) {\n\n\tconst programs = [];\n\n\tconst isWebGL2 = capabilities.isWebGL2;\n\tconst logarithmicDepthBuffer = capabilities.logarithmicDepthBuffer;\n\tconst floatVertexTextures = capabilities.floatVertexTextures;\n\tconst maxVertexUniforms = capabilities.maxVertexUniforms;\n\tconst vertexTextures = capabilities.vertexTextures;\n\n\tlet precision = capabilities.precision;\n\n\tconst shaderIDs = {\n\t\tMeshDepthMaterial: 'depth',\n\t\tMeshDistanceMaterial: 'distanceRGBA',\n\t\tMeshNormalMaterial: 'normal',\n\t\tMeshBasicMaterial: 'basic',\n\t\tMeshLambertMaterial: 'lambert',\n\t\tMeshPhongMaterial: 'phong',\n\t\tMeshToonMaterial: 'toon',\n\t\tMeshStandardMaterial: 'physical',\n\t\tMeshPhysicalMaterial: 'physical',\n\t\tMeshMatcapMaterial: 'matcap',\n\t\tLineBasicMaterial: 'basic',\n\t\tLineDashedMaterial: 'dashed',\n\t\tPointsMaterial: 'points',\n\t\tShadowMaterial: 'shadow',\n\t\tSpriteMaterial: 'sprite'\n\t};\n\n\tconst parameterNames = [\n\t\t'precision', 'isWebGL2', 'supportsVertexTextures', 'outputEncoding', 'instancing', 'instancingColor',\n\t\t'map', 'mapEncoding', 'matcap', 'matcapEncoding', 'envMap', 'envMapMode', 'envMapEncoding', 'envMapCubeUV',\n\t\t'lightMap', 'lightMapEncoding', 'aoMap', 'emissiveMap', 'emissiveMapEncoding', 'bumpMap', 'normalMap', 'objectSpaceNormalMap', 'tangentSpaceNormalMap', 'clearcoatMap', 'clearcoatRoughnessMap', 'clearcoatNormalMap', 'displacementMap', 'specularMap',\n\t\t'roughnessMap', 'metalnessMap', 'gradientMap',\n\t\t'alphaMap', 'combine', 'vertexColors', 'vertexTangents', 'vertexUvs', 'uvsVertexOnly', 'fog', 'useFog', 'fogExp2',\n\t\t'flatShading', 'sizeAttenuation', 'logarithmicDepthBuffer', 'skinning',\n\t\t'maxBones', 'useVertexTexture', 'morphTargets', 'morphNormals',\n\t\t'maxMorphTargets', 'maxMorphNormals', 'premultipliedAlpha',\n\t\t'numDirLights', 'numPointLights', 'numSpotLights', 'numHemiLights', 'numRectAreaLights',\n\t\t'numDirLightShadows', 'numPointLightShadows', 'numSpotLightShadows',\n\t\t'shadowMapEnabled', 'shadowMapType', 'toneMapping', 'physicallyCorrectLights',\n\t\t'alphaTest', 'doubleSided', 'flipSided', 'numClippingPlanes', 'numClipIntersection', 'depthPacking', 'dithering',\n\t\t'sheen', 'transmissionMap'\n\t];\n\n\tfunction getMaxBones( object ) {\n\n\t\tconst skeleton = object.skeleton;\n\t\tconst bones = skeleton.bones;\n\n\t\tif ( floatVertexTextures ) {\n\n\t\t\treturn 1024;\n\n\t\t} else {\n\n\t\t\t// default for when object is not specified\n\t\t\t// ( for example when prebuilding shader to be used with multiple objects )\n\t\t\t//\n\t\t\t//  - leave some extra space for other uniforms\n\t\t\t//  - limit here is ANGLE's 254 max uniform vectors\n\t\t\t//    (up to 54 should be safe)\n\n\t\t\tconst nVertexUniforms = maxVertexUniforms;\n\t\t\tconst nVertexMatrices = Math.floor( ( nVertexUniforms - 20 ) / 4 );\n\n\t\t\tconst maxBones = Math.min( nVertexMatrices, bones.length );\n\n\t\t\tif ( maxBones < bones.length ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Skeleton has ' + bones.length + ' bones. This GPU supports ' + maxBones + '.' );\n\t\t\t\treturn 0;\n\n\t\t\t}\n\n\t\t\treturn maxBones;\n\n\t\t}\n\n\t}\n\n\tfunction getTextureEncodingFromMap( map ) {\n\n\t\tlet encoding;\n\n\t\tif ( map && map.isTexture ) {\n\n\t\t\tencoding = map.encoding;\n\n\t\t} else if ( map && map.isWebGLRenderTarget ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLPrograms.getTextureEncodingFromMap: don\\'t use render targets as textures. Use their .texture property instead.' );\n\t\t\tencoding = map.texture.encoding;\n\n\t\t} else {\n\n\t\t\tencoding = LinearEncoding;\n\n\t\t}\n\n\t\treturn encoding;\n\n\t}\n\n\tfunction getParameters( material, lights, shadows, scene, object ) {\n\n\t\tconst fog = scene.fog;\n\t\tconst environment = material.isMeshStandardMaterial ? scene.environment : null;\n\n\t\tconst envMap = cubemaps.get( material.envMap || environment );\n\n\t\tconst shaderID = shaderIDs[ material.type ];\n\n\t\t// heuristics to create shader parameters according to lights in the scene\n\t\t// (not to blow over maxLights budget)\n\n\t\tconst maxBones = object.isSkinnedMesh ? getMaxBones( object ) : 0;\n\n\t\tif ( material.precision !== null ) {\n\n\t\t\tprecision = capabilities.getMaxPrecision( material.precision );\n\n\t\t\tif ( precision !== material.precision ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLProgram.getParameters:', material.precision, 'not supported, using', precision, 'instead.' );\n\n\t\t\t}\n\n\t\t}\n\n\t\tlet vertexShader, fragmentShader;\n\n\t\tif ( shaderID ) {\n\n\t\t\tconst shader = ShaderLib[ shaderID ];\n\n\t\t\tvertexShader = shader.vertexShader;\n\t\t\tfragmentShader = shader.fragmentShader;\n\n\t\t} else {\n\n\t\t\tvertexShader = material.vertexShader;\n\t\t\tfragmentShader = material.fragmentShader;\n\n\t\t}\n\n\t\tconst currentRenderTarget = renderer.getRenderTarget();\n\n\t\tconst parameters = {\n\n\t\t\tisWebGL2: isWebGL2,\n\n\t\t\tshaderID: shaderID,\n\t\t\tshaderName: material.type,\n\n\t\t\tvertexShader: vertexShader,\n\t\t\tfragmentShader: fragmentShader,\n\t\t\tdefines: material.defines,\n\n\t\t\tisRawShaderMaterial: material.isRawShaderMaterial === true,\n\t\t\tglslVersion: material.glslVersion,\n\n\t\t\tprecision: precision,\n\n\t\t\tinstancing: object.isInstancedMesh === true,\n\t\t\tinstancingColor: object.isInstancedMesh === true && object.instanceColor !== null,\n\n\t\t\tsupportsVertexTextures: vertexTextures,\n\t\t\toutputEncoding: ( currentRenderTarget !== null ) ? getTextureEncodingFromMap( currentRenderTarget.texture ) : renderer.outputEncoding,\n\t\t\tmap: !! material.map,\n\t\t\tmapEncoding: getTextureEncodingFromMap( material.map ),\n\t\t\tmatcap: !! material.matcap,\n\t\t\tmatcapEncoding: getTextureEncodingFromMap( material.matcap ),\n\t\t\tenvMap: !! envMap,\n\t\t\tenvMapMode: envMap && envMap.mapping,\n\t\t\tenvMapEncoding: getTextureEncodingFromMap( envMap ),\n\t\t\tenvMapCubeUV: ( !! envMap ) && ( ( envMap.mapping === CubeUVReflectionMapping ) || ( envMap.mapping === CubeUVRefractionMapping ) ),\n\t\t\tlightMap: !! material.lightMap,\n\t\t\tlightMapEncoding: getTextureEncodingFromMap( material.lightMap ),\n\t\t\taoMap: !! material.aoMap,\n\t\t\temissiveMap: !! material.emissiveMap,\n\t\t\temissiveMapEncoding: getTextureEncodingFromMap( material.emissiveMap ),\n\t\t\tbumpMap: !! material.bumpMap,\n\t\t\tnormalMap: !! material.normalMap,\n\t\t\tobjectSpaceNormalMap: material.normalMapType === ObjectSpaceNormalMap,\n\t\t\ttangentSpaceNormalMap: material.normalMapType === TangentSpaceNormalMap,\n\t\t\tclearcoatMap: !! material.clearcoatMap,\n\t\t\tclearcoatRoughnessMap: !! material.clearcoatRoughnessMap,\n\t\t\tclearcoatNormalMap: !! material.clearcoatNormalMap,\n\t\t\tdisplacementMap: !! material.displacementMap,\n\t\t\troughnessMap: !! material.roughnessMap,\n\t\t\tmetalnessMap: !! material.metalnessMap,\n\t\t\tspecularMap: !! material.specularMap,\n\t\t\talphaMap: !! material.alphaMap,\n\n\t\t\tgradientMap: !! material.gradientMap,\n\n\t\t\tsheen: !! material.sheen,\n\n\t\t\ttransmissionMap: !! material.transmissionMap,\n\n\t\t\tcombine: material.combine,\n\n\t\t\tvertexTangents: ( material.normalMap && material.vertexTangents ),\n\t\t\tvertexColors: material.vertexColors,\n\t\t\tvertexUvs: !! material.map || !! material.bumpMap || !! material.normalMap || !! material.specularMap || !! material.alphaMap || !! material.emissiveMap || !! material.roughnessMap || !! material.metalnessMap || !! material.clearcoatMap || !! material.clearcoatRoughnessMap || !! material.clearcoatNormalMap || !! material.displacementMap || !! material.transmissionMap,\n\t\t\tuvsVertexOnly: ! ( !! material.map || !! material.bumpMap || !! material.normalMap || !! material.specularMap || !! material.alphaMap || !! material.emissiveMap || !! material.roughnessMap || !! material.metalnessMap || !! material.clearcoatNormalMap || !! material.transmissionMap ) && !! material.displacementMap,\n\n\t\t\tfog: !! fog,\n\t\t\tuseFog: material.fog,\n\t\t\tfogExp2: ( fog && fog.isFogExp2 ),\n\n\t\t\tflatShading: material.flatShading,\n\n\t\t\tsizeAttenuation: material.sizeAttenuation,\n\t\t\tlogarithmicDepthBuffer: logarithmicDepthBuffer,\n\n\t\t\tskinning: material.skinning && maxBones > 0,\n\t\t\tmaxBones: maxBones,\n\t\t\tuseVertexTexture: floatVertexTextures,\n\n\t\t\tmorphTargets: material.morphTargets,\n\t\t\tmorphNormals: material.morphNormals,\n\t\t\tmaxMorphTargets: renderer.maxMorphTargets,\n\t\t\tmaxMorphNormals: renderer.maxMorphNormals,\n\n\t\t\tnumDirLights: lights.directional.length,\n\t\t\tnumPointLights: lights.point.length,\n\t\t\tnumSpotLights: lights.spot.length,\n\t\t\tnumRectAreaLights: lights.rectArea.length,\n\t\t\tnumHemiLights: lights.hemi.length,\n\n\t\t\tnumDirLightShadows: lights.directionalShadowMap.length,\n\t\t\tnumPointLightShadows: lights.pointShadowMap.length,\n\t\t\tnumSpotLightShadows: lights.spotShadowMap.length,\n\n\t\t\tnumClippingPlanes: clipping.numPlanes,\n\t\t\tnumClipIntersection: clipping.numIntersection,\n\n\t\t\tdithering: material.dithering,\n\n\t\t\tshadowMapEnabled: renderer.shadowMap.enabled && shadows.length > 0,\n\t\t\tshadowMapType: renderer.shadowMap.type,\n\n\t\t\ttoneMapping: material.toneMapped ? renderer.toneMapping : NoToneMapping,\n\t\t\tphysicallyCorrectLights: renderer.physicallyCorrectLights,\n\n\t\t\tpremultipliedAlpha: material.premultipliedAlpha,\n\n\t\t\talphaTest: material.alphaTest,\n\t\t\tdoubleSided: material.side === DoubleSide,\n\t\t\tflipSided: material.side === BackSide,\n\n\t\t\tdepthPacking: ( material.depthPacking !== undefined ) ? material.depthPacking : false,\n\n\t\t\tindex0AttributeName: material.index0AttributeName,\n\n\t\t\textensionDerivatives: material.extensions && material.extensions.derivatives,\n\t\t\textensionFragDepth: material.extensions && material.extensions.fragDepth,\n\t\t\textensionDrawBuffers: material.extensions && material.extensions.drawBuffers,\n\t\t\textensionShaderTextureLOD: material.extensions && material.extensions.shaderTextureLOD,\n\n\t\t\trendererExtensionFragDepth: isWebGL2 || extensions.has( 'EXT_frag_depth' ),\n\t\t\trendererExtensionDrawBuffers: isWebGL2 || extensions.has( 'WEBGL_draw_buffers' ),\n\t\t\trendererExtensionShaderTextureLod: isWebGL2 || extensions.has( 'EXT_shader_texture_lod' ),\n\n\t\t\tcustomProgramCacheKey: material.customProgramCacheKey()\n\n\t\t};\n\n\t\treturn parameters;\n\n\t}\n\n\tfunction getProgramCacheKey( parameters ) {\n\n\t\tconst array = [];\n\n\t\tif ( parameters.shaderID ) {\n\n\t\t\tarray.push( parameters.shaderID );\n\n\t\t} else {\n\n\t\t\tarray.push( parameters.fragmentShader );\n\t\t\tarray.push( parameters.vertexShader );\n\n\t\t}\n\n\t\tif ( parameters.defines !== undefined ) {\n\n\t\t\tfor ( const name in parameters.defines ) {\n\n\t\t\t\tarray.push( name );\n\t\t\t\tarray.push( parameters.defines[ name ] );\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( parameters.isRawShaderMaterial === false ) {\n\n\t\t\tfor ( let i = 0; i < parameterNames.length; i ++ ) {\n\n\t\t\t\tarray.push( parameters[ parameterNames[ i ] ] );\n\n\t\t\t}\n\n\t\t\tarray.push( renderer.outputEncoding );\n\t\t\tarray.push( renderer.gammaFactor );\n\n\t\t}\n\n\t\tarray.push( parameters.customProgramCacheKey );\n\n\t\treturn array.join();\n\n\t}\n\n\tfunction getUniforms( material ) {\n\n\t\tconst shaderID = shaderIDs[ material.type ];\n\t\tlet uniforms;\n\n\t\tif ( shaderID ) {\n\n\t\t\tconst shader = ShaderLib[ shaderID ];\n\t\t\tuniforms = UniformsUtils.clone( shader.uniforms );\n\n\t\t} else {\n\n\t\t\tuniforms = material.uniforms;\n\n\t\t}\n\n\t\treturn uniforms;\n\n\t}\n\n\tfunction acquireProgram( parameters, cacheKey ) {\n\n\t\tlet program;\n\n\t\t// Check if code has been already compiled\n\t\tfor ( let p = 0, pl = programs.length; p < pl; p ++ ) {\n\n\t\t\tconst preexistingProgram = programs[ p ];\n\n\t\t\tif ( preexistingProgram.cacheKey === cacheKey ) {\n\n\t\t\t\tprogram = preexistingProgram;\n\t\t\t\t++ program.usedTimes;\n\n\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( program === undefined ) {\n\n\t\t\tprogram = new WebGLProgram( renderer, cacheKey, parameters, bindingStates );\n\t\t\tprograms.push( program );\n\n\t\t}\n\n\t\treturn program;\n\n\t}\n\n\tfunction releaseProgram( program ) {\n\n\t\tif ( -- program.usedTimes === 0 ) {\n\n\t\t\t// Remove from unordered set\n\t\t\tconst i = programs.indexOf( program );\n\t\t\tprograms[ i ] = programs[ programs.length - 1 ];\n\t\t\tprograms.pop();\n\n\t\t\t// Free WebGL resources\n\t\t\tprogram.destroy();\n\n\t\t}\n\n\t}\n\n\treturn {\n\t\tgetParameters: getParameters,\n\t\tgetProgramCacheKey: getProgramCacheKey,\n\t\tgetUniforms: getUniforms,\n\t\tacquireProgram: acquireProgram,\n\t\treleaseProgram: releaseProgram,\n\t\t// Exposed for resource monitoring & error feedback via renderer.info:\n\t\tprograms: programs\n\t};\n\n}\n\nfunction WebGLProperties() {\n\n\tlet properties = new WeakMap();\n\n\tfunction get( object ) {\n\n\t\tlet map = properties.get( object );\n\n\t\tif ( map === undefined ) {\n\n\t\t\tmap = {};\n\t\t\tproperties.set( object, map );\n\n\t\t}\n\n\t\treturn map;\n\n\t}\n\n\tfunction remove( object ) {\n\n\t\tproperties.delete( object );\n\n\t}\n\n\tfunction update( object, key, value ) {\n\n\t\tproperties.get( object )[ key ] = value;\n\n\t}\n\n\tfunction dispose() {\n\n\t\tproperties = new WeakMap();\n\n\t}\n\n\treturn {\n\t\tget: get,\n\t\tremove: remove,\n\t\tupdate: update,\n\t\tdispose: dispose\n\t};\n\n}\n\nfunction painterSortStable( a, b ) {\n\n\tif ( a.groupOrder !== b.groupOrder ) {\n\n\t\treturn a.groupOrder - b.groupOrder;\n\n\t} else if ( a.renderOrder !== b.renderOrder ) {\n\n\t\treturn a.renderOrder - b.renderOrder;\n\n\t} else if ( a.program !== b.program ) {\n\n\t\treturn a.program.id - b.program.id;\n\n\t} else if ( a.material.id !== b.material.id ) {\n\n\t\treturn a.material.id - b.material.id;\n\n\t} else if ( a.z !== b.z ) {\n\n\t\treturn a.z - b.z;\n\n\t} else {\n\n\t\treturn a.id - b.id;\n\n\t}\n\n}\n\nfunction reversePainterSortStable( a, b ) {\n\n\tif ( a.groupOrder !== b.groupOrder ) {\n\n\t\treturn a.groupOrder - b.groupOrder;\n\n\t} else if ( a.renderOrder !== b.renderOrder ) {\n\n\t\treturn a.renderOrder - b.renderOrder;\n\n\t} else if ( a.z !== b.z ) {\n\n\t\treturn b.z - a.z;\n\n\t} else {\n\n\t\treturn a.id - b.id;\n\n\t}\n\n}\n\n\nfunction WebGLRenderList( properties ) {\n\n\tconst renderItems = [];\n\tlet renderItemsIndex = 0;\n\n\tconst opaque = [];\n\tconst transparent = [];\n\n\tconst defaultProgram = { id: - 1 };\n\n\tfunction init() {\n\n\t\trenderItemsIndex = 0;\n\n\t\topaque.length = 0;\n\t\ttransparent.length = 0;\n\n\t}\n\n\tfunction getNextRenderItem( object, geometry, material, groupOrder, z, group ) {\n\n\t\tlet renderItem = renderItems[ renderItemsIndex ];\n\t\tconst materialProperties = properties.get( material );\n\n\t\tif ( renderItem === undefined ) {\n\n\t\t\trenderItem = {\n\t\t\t\tid: object.id,\n\t\t\t\tobject: object,\n\t\t\t\tgeometry: geometry,\n\t\t\t\tmaterial: material,\n\t\t\t\tprogram: materialProperties.program || defaultProgram,\n\t\t\t\tgroupOrder: groupOrder,\n\t\t\t\trenderOrder: object.renderOrder,\n\t\t\t\tz: z,\n\t\t\t\tgroup: group\n\t\t\t};\n\n\t\t\trenderItems[ renderItemsIndex ] = renderItem;\n\n\t\t} else {\n\n\t\t\trenderItem.id = object.id;\n\t\t\trenderItem.object = object;\n\t\t\trenderItem.geometry = geometry;\n\t\t\trenderItem.material = material;\n\t\t\trenderItem.program = materialProperties.program || defaultProgram;\n\t\t\trenderItem.groupOrder = groupOrder;\n\t\t\trenderItem.renderOrder = object.renderOrder;\n\t\t\trenderItem.z = z;\n\t\t\trenderItem.group = group;\n\n\t\t}\n\n\t\trenderItemsIndex ++;\n\n\t\treturn renderItem;\n\n\t}\n\n\tfunction push( object, geometry, material, groupOrder, z, group ) {\n\n\t\tconst renderItem = getNextRenderItem( object, geometry, material, groupOrder, z, group );\n\n\t\t( material.transparent === true ? transparent : opaque ).push( renderItem );\n\n\t}\n\n\tfunction unshift( object, geometry, material, groupOrder, z, group ) {\n\n\t\tconst renderItem = getNextRenderItem( object, geometry, material, groupOrder, z, group );\n\n\t\t( material.transparent === true ? transparent : opaque ).unshift( renderItem );\n\n\t}\n\n\tfunction sort( customOpaqueSort, customTransparentSort ) {\n\n\t\tif ( opaque.length > 1 ) opaque.sort( customOpaqueSort || painterSortStable );\n\t\tif ( transparent.length > 1 ) transparent.sort( customTransparentSort || reversePainterSortStable );\n\n\t}\n\n\tfunction finish() {\n\n\t\t// Clear references from inactive renderItems in the list\n\n\t\tfor ( let i = renderItemsIndex, il = renderItems.length; i < il; i ++ ) {\n\n\t\t\tconst renderItem = renderItems[ i ];\n\n\t\t\tif ( renderItem.id === null ) break;\n\n\t\t\trenderItem.id = null;\n\t\t\trenderItem.object = null;\n\t\t\trenderItem.geometry = null;\n\t\t\trenderItem.material = null;\n\t\t\trenderItem.program = null;\n\t\t\trenderItem.group = null;\n\n\t\t}\n\n\t}\n\n\treturn {\n\n\t\topaque: opaque,\n\t\ttransparent: transparent,\n\n\t\tinit: init,\n\t\tpush: push,\n\t\tunshift: unshift,\n\t\tfinish: finish,\n\n\t\tsort: sort\n\t};\n\n}\n\nfunction WebGLRenderLists( properties ) {\n\n\tlet lists = new WeakMap();\n\n\tfunction get( scene, camera ) {\n\n\t\tconst cameras = lists.get( scene );\n\t\tlet list;\n\n\t\tif ( cameras === undefined ) {\n\n\t\t\tlist = new WebGLRenderList( properties );\n\t\t\tlists.set( scene, new WeakMap() );\n\t\t\tlists.get( scene ).set( camera, list );\n\n\t\t} else {\n\n\t\t\tlist = cameras.get( camera );\n\t\t\tif ( list === undefined ) {\n\n\t\t\t\tlist = new WebGLRenderList( properties );\n\t\t\t\tcameras.set( camera, list );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn list;\n\n\t}\n\n\tfunction dispose() {\n\n\t\tlists = new WeakMap();\n\n\t}\n\n\treturn {\n\t\tget: get,\n\t\tdispose: dispose\n\t};\n\n}\n\nfunction UniformsCache() {\n\n\tconst lights = {};\n\n\treturn {\n\n\t\tget: function ( light ) {\n\n\t\t\tif ( lights[ light.id ] !== undefined ) {\n\n\t\t\t\treturn lights[ light.id ];\n\n\t\t\t}\n\n\t\t\tlet uniforms;\n\n\t\t\tswitch ( light.type ) {\n\n\t\t\t\tcase 'DirectionalLight':\n\t\t\t\t\tuniforms = {\n\t\t\t\t\t\tdirection: new Vector3(),\n\t\t\t\t\t\tcolor: new Color()\n\t\t\t\t\t};\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'SpotLight':\n\t\t\t\t\tuniforms = {\n\t\t\t\t\t\tposition: new Vector3(),\n\t\t\t\t\t\tdirection: new Vector3(),\n\t\t\t\t\t\tcolor: new Color(),\n\t\t\t\t\t\tdistance: 0,\n\t\t\t\t\t\tconeCos: 0,\n\t\t\t\t\t\tpenumbraCos: 0,\n\t\t\t\t\t\tdecay: 0\n\t\t\t\t\t};\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'PointLight':\n\t\t\t\t\tuniforms = {\n\t\t\t\t\t\tposition: new Vector3(),\n\t\t\t\t\t\tcolor: new Color(),\n\t\t\t\t\t\tdistance: 0,\n\t\t\t\t\t\tdecay: 0\n\t\t\t\t\t};\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'HemisphereLight':\n\t\t\t\t\tuniforms = {\n\t\t\t\t\t\tdirection: new Vector3(),\n\t\t\t\t\t\tskyColor: new Color(),\n\t\t\t\t\t\tgroundColor: new Color()\n\t\t\t\t\t};\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'RectAreaLight':\n\t\t\t\t\tuniforms = {\n\t\t\t\t\t\tcolor: new Color(),\n\t\t\t\t\t\tposition: new Vector3(),\n\t\t\t\t\t\thalfWidth: new Vector3(),\n\t\t\t\t\t\thalfHeight: new Vector3()\n\t\t\t\t\t};\n\t\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t\tlights[ light.id ] = uniforms;\n\n\t\t\treturn uniforms;\n\n\t\t}\n\n\t};\n\n}\n\nfunction ShadowUniformsCache() {\n\n\tconst lights = {};\n\n\treturn {\n\n\t\tget: function ( light ) {\n\n\t\t\tif ( lights[ light.id ] !== undefined ) {\n\n\t\t\t\treturn lights[ light.id ];\n\n\t\t\t}\n\n\t\t\tlet uniforms;\n\n\t\t\tswitch ( light.type ) {\n\n\t\t\t\tcase 'DirectionalLight':\n\t\t\t\t\tuniforms = {\n\t\t\t\t\t\tshadowBias: 0,\n\t\t\t\t\t\tshadowNormalBias: 0,\n\t\t\t\t\t\tshadowRadius: 1,\n\t\t\t\t\t\tshadowMapSize: new Vector2()\n\t\t\t\t\t};\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'SpotLight':\n\t\t\t\t\tuniforms = {\n\t\t\t\t\t\tshadowBias: 0,\n\t\t\t\t\t\tshadowNormalBias: 0,\n\t\t\t\t\t\tshadowRadius: 1,\n\t\t\t\t\t\tshadowMapSize: new Vector2()\n\t\t\t\t\t};\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'PointLight':\n\t\t\t\t\tuniforms = {\n\t\t\t\t\t\tshadowBias: 0,\n\t\t\t\t\t\tshadowNormalBias: 0,\n\t\t\t\t\t\tshadowRadius: 1,\n\t\t\t\t\t\tshadowMapSize: new Vector2(),\n\t\t\t\t\t\tshadowCameraNear: 1,\n\t\t\t\t\t\tshadowCameraFar: 1000\n\t\t\t\t\t};\n\t\t\t\t\tbreak;\n\n\t\t\t\t// TODO (abelnation): set RectAreaLight shadow uniforms\n\n\t\t\t}\n\n\t\t\tlights[ light.id ] = uniforms;\n\n\t\t\treturn uniforms;\n\n\t\t}\n\n\t};\n\n}\n\n\n\nlet nextVersion = 0;\n\nfunction shadowCastingLightsFirst( lightA, lightB ) {\n\n\treturn ( lightB.castShadow ? 1 : 0 ) - ( lightA.castShadow ? 1 : 0 );\n\n}\n\nfunction WebGLLights( extensions, capabilities ) {\n\n\tconst cache = new UniformsCache();\n\n\tconst shadowCache = ShadowUniformsCache();\n\n\tconst state = {\n\n\t\tversion: 0,\n\n\t\thash: {\n\t\t\tdirectionalLength: - 1,\n\t\t\tpointLength: - 1,\n\t\t\tspotLength: - 1,\n\t\t\trectAreaLength: - 1,\n\t\t\themiLength: - 1,\n\n\t\t\tnumDirectionalShadows: - 1,\n\t\t\tnumPointShadows: - 1,\n\t\t\tnumSpotShadows: - 1\n\t\t},\n\n\t\tambient: [ 0, 0, 0 ],\n\t\tprobe: [],\n\t\tdirectional: [],\n\t\tdirectionalShadow: [],\n\t\tdirectionalShadowMap: [],\n\t\tdirectionalShadowMatrix: [],\n\t\tspot: [],\n\t\tspotShadow: [],\n\t\tspotShadowMap: [],\n\t\tspotShadowMatrix: [],\n\t\trectArea: [],\n\t\trectAreaLTC1: null,\n\t\trectAreaLTC2: null,\n\t\tpoint: [],\n\t\tpointShadow: [],\n\t\tpointShadowMap: [],\n\t\tpointShadowMatrix: [],\n\t\themi: []\n\n\t};\n\n\tfor ( let i = 0; i < 9; i ++ ) state.probe.push( new Vector3() );\n\n\tconst vector3 = new Vector3();\n\tconst matrix4 = new Matrix4();\n\tconst matrix42 = new Matrix4();\n\n\tfunction setup( lights ) {\n\n\t\tlet r = 0, g = 0, b = 0;\n\n\t\tfor ( let i = 0; i < 9; i ++ ) state.probe[ i ].set( 0, 0, 0 );\n\n\t\tlet directionalLength = 0;\n\t\tlet pointLength = 0;\n\t\tlet spotLength = 0;\n\t\tlet rectAreaLength = 0;\n\t\tlet hemiLength = 0;\n\n\t\tlet numDirectionalShadows = 0;\n\t\tlet numPointShadows = 0;\n\t\tlet numSpotShadows = 0;\n\n\t\tlights.sort( shadowCastingLightsFirst );\n\n\t\tfor ( let i = 0, l = lights.length; i < l; i ++ ) {\n\n\t\t\tconst light = lights[ i ];\n\n\t\t\tconst color = light.color;\n\t\t\tconst intensity = light.intensity;\n\t\t\tconst distance = light.distance;\n\n\t\t\tconst shadowMap = ( light.shadow && light.shadow.map ) ? light.shadow.map.texture : null;\n\n\t\t\tif ( light.isAmbientLight ) {\n\n\t\t\t\tr += color.r * intensity;\n\t\t\t\tg += color.g * intensity;\n\t\t\t\tb += color.b * intensity;\n\n\t\t\t} else if ( light.isLightProbe ) {\n\n\t\t\t\tfor ( let j = 0; j < 9; j ++ ) {\n\n\t\t\t\t\tstate.probe[ j ].addScaledVector( light.sh.coefficients[ j ], intensity );\n\n\t\t\t\t}\n\n\t\t\t} else if ( light.isDirectionalLight ) {\n\n\t\t\t\tconst uniforms = cache.get( light );\n\n\t\t\t\tuniforms.color.copy( light.color ).multiplyScalar( light.intensity );\n\n\t\t\t\tif ( light.castShadow ) {\n\n\t\t\t\t\tconst shadow = light.shadow;\n\n\t\t\t\t\tconst shadowUniforms = shadowCache.get( light );\n\n\t\t\t\t\tshadowUniforms.shadowBias = shadow.bias;\n\t\t\t\t\tshadowUniforms.shadowNormalBias = shadow.normalBias;\n\t\t\t\t\tshadowUniforms.shadowRadius = shadow.radius;\n\t\t\t\t\tshadowUniforms.shadowMapSize = shadow.mapSize;\n\n\t\t\t\t\tstate.directionalShadow[ directionalLength ] = shadowUniforms;\n\t\t\t\t\tstate.directionalShadowMap[ directionalLength ] = shadowMap;\n\t\t\t\t\tstate.directionalShadowMatrix[ directionalLength ] = light.shadow.matrix;\n\n\t\t\t\t\tnumDirectionalShadows ++;\n\n\t\t\t\t}\n\n\t\t\t\tstate.directional[ directionalLength ] = uniforms;\n\n\t\t\t\tdirectionalLength ++;\n\n\t\t\t} else if ( light.isSpotLight ) {\n\n\t\t\t\tconst uniforms = cache.get( light );\n\n\t\t\t\tuniforms.position.setFromMatrixPosition( light.matrixWorld );\n\n\t\t\t\tuniforms.color.copy( color ).multiplyScalar( intensity );\n\t\t\t\tuniforms.distance = distance;\n\n\t\t\t\tuniforms.coneCos = Math.cos( light.angle );\n\t\t\t\tuniforms.penumbraCos = Math.cos( light.angle * ( 1 - light.penumbra ) );\n\t\t\t\tuniforms.decay = light.decay;\n\n\t\t\t\tif ( light.castShadow ) {\n\n\t\t\t\t\tconst shadow = light.shadow;\n\n\t\t\t\t\tconst shadowUniforms = shadowCache.get( light );\n\n\t\t\t\t\tshadowUniforms.shadowBias = shadow.bias;\n\t\t\t\t\tshadowUniforms.shadowNormalBias = shadow.normalBias;\n\t\t\t\t\tshadowUniforms.shadowRadius = shadow.radius;\n\t\t\t\t\tshadowUniforms.shadowMapSize = shadow.mapSize;\n\n\t\t\t\t\tstate.spotShadow[ spotLength ] = shadowUniforms;\n\t\t\t\t\tstate.spotShadowMap[ spotLength ] = shadowMap;\n\t\t\t\t\tstate.spotShadowMatrix[ spotLength ] = light.shadow.matrix;\n\n\t\t\t\t\tnumSpotShadows ++;\n\n\t\t\t\t}\n\n\t\t\t\tstate.spot[ spotLength ] = uniforms;\n\n\t\t\t\tspotLength ++;\n\n\t\t\t} else if ( light.isRectAreaLight ) {\n\n\t\t\t\tconst uniforms = cache.get( light );\n\n\t\t\t\t// (a) intensity is the total visible light emitted\n\t\t\t\t//uniforms.color.copy( color ).multiplyScalar( intensity / ( light.width * light.height * Math.PI ) );\n\n\t\t\t\t// (b) intensity is the brightness of the light\n\t\t\t\tuniforms.color.copy( color ).multiplyScalar( intensity );\n\n\t\t\t\tuniforms.halfWidth.set( light.width * 0.5, 0.0, 0.0 );\n\t\t\t\tuniforms.halfHeight.set( 0.0, light.height * 0.5, 0.0 );\n\n\t\t\t\tstate.rectArea[ rectAreaLength ] = uniforms;\n\n\t\t\t\trectAreaLength ++;\n\n\t\t\t} else if ( light.isPointLight ) {\n\n\t\t\t\tconst uniforms = cache.get( light );\n\n\t\t\t\tuniforms.color.copy( light.color ).multiplyScalar( light.intensity );\n\t\t\t\tuniforms.distance = light.distance;\n\t\t\t\tuniforms.decay = light.decay;\n\n\t\t\t\tif ( light.castShadow ) {\n\n\t\t\t\t\tconst shadow = light.shadow;\n\n\t\t\t\t\tconst shadowUniforms = shadowCache.get( light );\n\n\t\t\t\t\tshadowUniforms.shadowBias = shadow.bias;\n\t\t\t\t\tshadowUniforms.shadowNormalBias = shadow.normalBias;\n\t\t\t\t\tshadowUniforms.shadowRadius = shadow.radius;\n\t\t\t\t\tshadowUniforms.shadowMapSize = shadow.mapSize;\n\t\t\t\t\tshadowUniforms.shadowCameraNear = shadow.camera.near;\n\t\t\t\t\tshadowUniforms.shadowCameraFar = shadow.camera.far;\n\n\t\t\t\t\tstate.pointShadow[ pointLength ] = shadowUniforms;\n\t\t\t\t\tstate.pointShadowMap[ pointLength ] = shadowMap;\n\t\t\t\t\tstate.pointShadowMatrix[ pointLength ] = light.shadow.matrix;\n\n\t\t\t\t\tnumPointShadows ++;\n\n\t\t\t\t}\n\n\t\t\t\tstate.point[ pointLength ] = uniforms;\n\n\t\t\t\tpointLength ++;\n\n\t\t\t} else if ( light.isHemisphereLight ) {\n\n\t\t\t\tconst uniforms = cache.get( light );\n\n\t\t\t\tuniforms.skyColor.copy( light.color ).multiplyScalar( intensity );\n\t\t\t\tuniforms.groundColor.copy( light.groundColor ).multiplyScalar( intensity );\n\n\t\t\t\tstate.hemi[ hemiLength ] = uniforms;\n\n\t\t\t\themiLength ++;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( rectAreaLength > 0 ) {\n\n\t\t\tif ( capabilities.isWebGL2 ) {\n\n\t\t\t\t// WebGL 2\n\n\t\t\t\tstate.rectAreaLTC1 = UniformsLib.LTC_FLOAT_1;\n\t\t\t\tstate.rectAreaLTC2 = UniformsLib.LTC_FLOAT_2;\n\n\t\t\t} else {\n\n\t\t\t\t// WebGL 1\n\n\t\t\t\tif ( extensions.has( 'OES_texture_float_linear' ) === true ) {\n\n\t\t\t\t\tstate.rectAreaLTC1 = UniformsLib.LTC_FLOAT_1;\n\t\t\t\t\tstate.rectAreaLTC2 = UniformsLib.LTC_FLOAT_2;\n\n\t\t\t\t} else if ( extensions.has( 'OES_texture_half_float_linear' ) === true ) {\n\n\t\t\t\t\tstate.rectAreaLTC1 = UniformsLib.LTC_HALF_1;\n\t\t\t\t\tstate.rectAreaLTC2 = UniformsLib.LTC_HALF_2;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.error( 'THREE.WebGLRenderer: Unable to use RectAreaLight. Missing WebGL extensions.' );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tstate.ambient[ 0 ] = r;\n\t\tstate.ambient[ 1 ] = g;\n\t\tstate.ambient[ 2 ] = b;\n\n\t\tconst hash = state.hash;\n\n\t\tif ( hash.directionalLength !== directionalLength ||\n\t\t\thash.pointLength !== pointLength ||\n\t\t\thash.spotLength !== spotLength ||\n\t\t\thash.rectAreaLength !== rectAreaLength ||\n\t\t\thash.hemiLength !== hemiLength ||\n\t\t\thash.numDirectionalShadows !== numDirectionalShadows ||\n\t\t\thash.numPointShadows !== numPointShadows ||\n\t\t\thash.numSpotShadows !== numSpotShadows ) {\n\n\t\t\tstate.directional.length = directionalLength;\n\t\t\tstate.spot.length = spotLength;\n\t\t\tstate.rectArea.length = rectAreaLength;\n\t\t\tstate.point.length = pointLength;\n\t\t\tstate.hemi.length = hemiLength;\n\n\t\t\tstate.directionalShadow.length = numDirectionalShadows;\n\t\t\tstate.directionalShadowMap.length = numDirectionalShadows;\n\t\t\tstate.pointShadow.length = numPointShadows;\n\t\t\tstate.pointShadowMap.length = numPointShadows;\n\t\t\tstate.spotShadow.length = numSpotShadows;\n\t\t\tstate.spotShadowMap.length = numSpotShadows;\n\t\t\tstate.directionalShadowMatrix.length = numDirectionalShadows;\n\t\t\tstate.pointShadowMatrix.length = numPointShadows;\n\t\t\tstate.spotShadowMatrix.length = numSpotShadows;\n\n\t\t\thash.directionalLength = directionalLength;\n\t\t\thash.pointLength = pointLength;\n\t\t\thash.spotLength = spotLength;\n\t\t\thash.rectAreaLength = rectAreaLength;\n\t\t\thash.hemiLength = hemiLength;\n\n\t\t\thash.numDirectionalShadows = numDirectionalShadows;\n\t\t\thash.numPointShadows = numPointShadows;\n\t\t\thash.numSpotShadows = numSpotShadows;\n\n\t\t\tstate.version = nextVersion ++;\n\n\t\t}\n\n\t}\n\n\tfunction setupView( lights, camera ) {\n\n\t\tlet directionalLength = 0;\n\t\tlet pointLength = 0;\n\t\tlet spotLength = 0;\n\t\tlet rectAreaLength = 0;\n\t\tlet hemiLength = 0;\n\n\t\tconst viewMatrix = camera.matrixWorldInverse;\n\n\t\tfor ( let i = 0, l = lights.length; i < l; i ++ ) {\n\n\t\t\tconst light = lights[ i ];\n\n\t\t\tif ( light.isDirectionalLight ) {\n\n\t\t\t\tconst uniforms = state.directional[ directionalLength ];\n\n\t\t\t\tuniforms.direction.setFromMatrixPosition( light.matrixWorld );\n\t\t\t\tvector3.setFromMatrixPosition( light.target.matrixWorld );\n\t\t\t\tuniforms.direction.sub( vector3 );\n\t\t\t\tuniforms.direction.transformDirection( viewMatrix );\n\n\t\t\t\tdirectionalLength ++;\n\n\t\t\t} else if ( light.isSpotLight ) {\n\n\t\t\t\tconst uniforms = state.spot[ spotLength ];\n\n\t\t\t\tuniforms.position.setFromMatrixPosition( light.matrixWorld );\n\t\t\t\tuniforms.position.applyMatrix4( viewMatrix );\n\n\t\t\t\tuniforms.direction.setFromMatrixPosition( light.matrixWorld );\n\t\t\t\tvector3.setFromMatrixPosition( light.target.matrixWorld );\n\t\t\t\tuniforms.direction.sub( vector3 );\n\t\t\t\tuniforms.direction.transformDirection( viewMatrix );\n\n\t\t\t\tspotLength ++;\n\n\t\t\t} else if ( light.isRectAreaLight ) {\n\n\t\t\t\tconst uniforms = state.rectArea[ rectAreaLength ];\n\n\t\t\t\tuniforms.position.setFromMatrixPosition( light.matrixWorld );\n\t\t\t\tuniforms.position.applyMatrix4( viewMatrix );\n\n\t\t\t\t// extract local rotation of light to derive width/height half vectors\n\t\t\t\tmatrix42.identity();\n\t\t\t\tmatrix4.copy( light.matrixWorld );\n\t\t\t\tmatrix4.premultiply( viewMatrix );\n\t\t\t\tmatrix42.extractRotation( matrix4 );\n\n\t\t\t\tuniforms.halfWidth.set( light.width * 0.5, 0.0, 0.0 );\n\t\t\t\tuniforms.halfHeight.set( 0.0, light.height * 0.5, 0.0 );\n\n\t\t\t\tuniforms.halfWidth.applyMatrix4( matrix42 );\n\t\t\t\tuniforms.halfHeight.applyMatrix4( matrix42 );\n\n\t\t\t\trectAreaLength ++;\n\n\t\t\t} else if ( light.isPointLight ) {\n\n\t\t\t\tconst uniforms = state.point[ pointLength ];\n\n\t\t\t\tuniforms.position.setFromMatrixPosition( light.matrixWorld );\n\t\t\t\tuniforms.position.applyMatrix4( viewMatrix );\n\n\t\t\t\tpointLength ++;\n\n\t\t\t} else if ( light.isHemisphereLight ) {\n\n\t\t\t\tconst uniforms = state.hemi[ hemiLength ];\n\n\t\t\t\tuniforms.direction.setFromMatrixPosition( light.matrixWorld );\n\t\t\t\tuniforms.direction.transformDirection( viewMatrix );\n\t\t\t\tuniforms.direction.normalize();\n\n\t\t\t\themiLength ++;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\treturn {\n\t\tsetup: setup,\n\t\tsetupView: setupView,\n\t\tstate: state\n\t};\n\n}\n\nfunction WebGLRenderState( extensions, capabilities ) {\n\n\tconst lights = new WebGLLights( extensions, capabilities );\n\n\tconst lightsArray = [];\n\tconst shadowsArray = [];\n\n\tfunction init() {\n\n\t\tlightsArray.length = 0;\n\t\tshadowsArray.length = 0;\n\n\t}\n\n\tfunction pushLight( light ) {\n\n\t\tlightsArray.push( light );\n\n\t}\n\n\tfunction pushShadow( shadowLight ) {\n\n\t\tshadowsArray.push( shadowLight );\n\n\t}\n\n\tfunction setupLights() {\n\n\t\tlights.setup( lightsArray );\n\n\t}\n\n\tfunction setupLightsView( camera ) {\n\n\t\tlights.setupView( lightsArray, camera );\n\n\t}\n\n\tconst state = {\n\t\tlightsArray: lightsArray,\n\t\tshadowsArray: shadowsArray,\n\n\t\tlights: lights\n\t};\n\n\treturn {\n\t\tinit: init,\n\t\tstate: state,\n\t\tsetupLights: setupLights,\n\t\tsetupLightsView: setupLightsView,\n\n\t\tpushLight: pushLight,\n\t\tpushShadow: pushShadow\n\t};\n\n}\n\nfunction WebGLRenderStates( extensions, capabilities ) {\n\n\tlet renderStates = new WeakMap();\n\n\tfunction get( scene, renderCallDepth = 0 ) {\n\n\t\tlet renderState;\n\n\t\tif ( renderStates.has( scene ) === false ) {\n\n\t\t\trenderState = new WebGLRenderState( extensions, capabilities );\n\t\t\trenderStates.set( scene, [] );\n\t\t\trenderStates.get( scene ).push( renderState );\n\n\t\t} else {\n\n\t\t\tif ( renderCallDepth >= renderStates.get( scene ).length ) {\n\n\t\t\t\trenderState = new WebGLRenderState( extensions, capabilities );\n\t\t\t\trenderStates.get( scene ).push( renderState );\n\n\t\t\t} else {\n\n\t\t\t\trenderState = renderStates.get( scene )[ renderCallDepth ];\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn renderState;\n\n\t}\n\n\tfunction dispose() {\n\n\t\trenderStates = new WeakMap();\n\n\t}\n\n\treturn {\n\t\tget: get,\n\t\tdispose: dispose\n\t};\n\n}\n\n/**\n * parameters = {\n *\n *  opacity: <float>,\n *\n *  map: new THREE.Texture( <Image> ),\n *\n *  alphaMap: new THREE.Texture( <Image> ),\n *\n *  displacementMap: new THREE.Texture( <Image> ),\n *  displacementScale: <float>,\n *  displacementBias: <float>,\n *\n *  wireframe: <boolean>,\n *  wireframeLinewidth: <float>\n * }\n */\n\nfunction MeshDepthMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.type = 'MeshDepthMaterial';\n\n\tthis.depthPacking = BasicDepthPacking;\n\n\tthis.skinning = false;\n\tthis.morphTargets = false;\n\n\tthis.map = null;\n\n\tthis.alphaMap = null;\n\n\tthis.displacementMap = null;\n\tthis.displacementScale = 1;\n\tthis.displacementBias = 0;\n\n\tthis.wireframe = false;\n\tthis.wireframeLinewidth = 1;\n\n\tthis.fog = false;\n\n\tthis.setValues( parameters );\n\n}\n\nMeshDepthMaterial.prototype = Object.create( Material.prototype );\nMeshDepthMaterial.prototype.constructor = MeshDepthMaterial;\n\nMeshDepthMaterial.prototype.isMeshDepthMaterial = true;\n\nMeshDepthMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.depthPacking = source.depthPacking;\n\n\tthis.skinning = source.skinning;\n\tthis.morphTargets = source.morphTargets;\n\n\tthis.map = source.map;\n\n\tthis.alphaMap = source.alphaMap;\n\n\tthis.displacementMap = source.displacementMap;\n\tthis.displacementScale = source.displacementScale;\n\tthis.displacementBias = source.displacementBias;\n\n\tthis.wireframe = source.wireframe;\n\tthis.wireframeLinewidth = source.wireframeLinewidth;\n\n\treturn this;\n\n};\n\n/**\n * parameters = {\n *\n *  referencePosition: <float>,\n *  nearDistance: <float>,\n *  farDistance: <float>,\n *\n *  skinning: <bool>,\n *  morphTargets: <bool>,\n *\n *  map: new THREE.Texture( <Image> ),\n *\n *  alphaMap: new THREE.Texture( <Image> ),\n *\n *  displacementMap: new THREE.Texture( <Image> ),\n *  displacementScale: <float>,\n *  displacementBias: <float>\n *\n * }\n */\n\nfunction MeshDistanceMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.type = 'MeshDistanceMaterial';\n\n\tthis.referencePosition = new Vector3();\n\tthis.nearDistance = 1;\n\tthis.farDistance = 1000;\n\n\tthis.skinning = false;\n\tthis.morphTargets = false;\n\n\tthis.map = null;\n\n\tthis.alphaMap = null;\n\n\tthis.displacementMap = null;\n\tthis.displacementScale = 1;\n\tthis.displacementBias = 0;\n\n\tthis.fog = false;\n\n\tthis.setValues( parameters );\n\n}\n\nMeshDistanceMaterial.prototype = Object.create( Material.prototype );\nMeshDistanceMaterial.prototype.constructor = MeshDistanceMaterial;\n\nMeshDistanceMaterial.prototype.isMeshDistanceMaterial = true;\n\nMeshDistanceMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.referencePosition.copy( source.referencePosition );\n\tthis.nearDistance = source.nearDistance;\n\tthis.farDistance = source.farDistance;\n\n\tthis.skinning = source.skinning;\n\tthis.morphTargets = source.morphTargets;\n\n\tthis.map = source.map;\n\n\tthis.alphaMap = source.alphaMap;\n\n\tthis.displacementMap = source.displacementMap;\n\tthis.displacementScale = source.displacementScale;\n\tthis.displacementBias = source.displacementBias;\n\n\treturn this;\n\n};\n\nvar vsm_frag = \"uniform sampler2D shadow_pass;\\nuniform vec2 resolution;\\nuniform float radius;\\n#include <packing>\\nvoid main() {\\n\\tfloat mean = 0.0;\\n\\tfloat squared_mean = 0.0;\\n\\tfloat depth = unpackRGBAToDepth( texture2D( shadow_pass, ( gl_FragCoord.xy ) / resolution ) );\\n\\tfor ( float i = -1.0; i < 1.0 ; i += SAMPLE_RATE) {\\n\\t\\t#ifdef HORIZONTAL_PASS\\n\\t\\t\\tvec2 distribution = unpackRGBATo2Half( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( i, 0.0 ) * radius ) / resolution ) );\\n\\t\\t\\tmean += distribution.x;\\n\\t\\t\\tsquared_mean += distribution.y * distribution.y + distribution.x * distribution.x;\\n\\t\\t#else\\n\\t\\t\\tfloat depth = unpackRGBAToDepth( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( 0.0, i ) * radius ) / resolution ) );\\n\\t\\t\\tmean += depth;\\n\\t\\t\\tsquared_mean += depth * depth;\\n\\t\\t#endif\\n\\t}\\n\\tmean = mean * HALF_SAMPLE_RATE;\\n\\tsquared_mean = squared_mean * HALF_SAMPLE_RATE;\\n\\tfloat std_dev = sqrt( squared_mean - mean * mean );\\n\\tgl_FragColor = pack2HalfToRGBA( vec2( mean, std_dev ) );\\n}\";\n\nvar vsm_vert = \"void main() {\\n\\tgl_Position = vec4( position, 1.0 );\\n}\";\n\nfunction WebGLShadowMap( _renderer, _objects, maxTextureSize ) {\n\n\tlet _frustum = new Frustum();\n\n\tconst _shadowMapSize = new Vector2(),\n\t\t_viewportSize = new Vector2(),\n\n\t\t_viewport = new Vector4(),\n\n\t\t_depthMaterials = [],\n\t\t_distanceMaterials = [],\n\n\t\t_materialCache = {};\n\n\tconst shadowSide = { 0: BackSide, 1: FrontSide, 2: DoubleSide };\n\n\tconst shadowMaterialVertical = new ShaderMaterial( {\n\n\t\tdefines: {\n\t\t\tSAMPLE_RATE: 2.0 / 8.0,\n\t\t\tHALF_SAMPLE_RATE: 1.0 / 8.0\n\t\t},\n\n\t\tuniforms: {\n\t\t\tshadow_pass: { value: null },\n\t\t\tresolution: { value: new Vector2() },\n\t\t\tradius: { value: 4.0 }\n\t\t},\n\n\t\tvertexShader: vsm_vert,\n\n\t\tfragmentShader: vsm_frag\n\n\t} );\n\n\tconst shadowMaterialHorizontal = shadowMaterialVertical.clone();\n\tshadowMaterialHorizontal.defines.HORIZONTAL_PASS = 1;\n\n\tconst fullScreenTri = new BufferGeometry();\n\tfullScreenTri.setAttribute(\n\t\t'position',\n\t\tnew BufferAttribute(\n\t\t\tnew Float32Array( [ - 1, - 1, 0.5, 3, - 1, 0.5, - 1, 3, 0.5 ] ),\n\t\t\t3\n\t\t)\n\t);\n\n\tconst fullScreenMesh = new Mesh( fullScreenTri, shadowMaterialVertical );\n\n\tconst scope = this;\n\n\tthis.enabled = false;\n\n\tthis.autoUpdate = true;\n\tthis.needsUpdate = false;\n\n\tthis.type = PCFShadowMap;\n\n\tthis.render = function ( lights, scene, camera ) {\n\n\t\tif ( scope.enabled === false ) return;\n\t\tif ( scope.autoUpdate === false && scope.needsUpdate === false ) return;\n\n\t\tif ( lights.length === 0 ) return;\n\n\t\tconst currentRenderTarget = _renderer.getRenderTarget();\n\t\tconst activeCubeFace = _renderer.getActiveCubeFace();\n\t\tconst activeMipmapLevel = _renderer.getActiveMipmapLevel();\n\n\t\tconst _state = _renderer.state;\n\n\t\t// Set GL state for depth map.\n\t\t_state.setBlending( NoBlending );\n\t\t_state.buffers.color.setClear( 1, 1, 1, 1 );\n\t\t_state.buffers.depth.setTest( true );\n\t\t_state.setScissorTest( false );\n\n\t\t// render depth map\n\n\t\tfor ( let i = 0, il = lights.length; i < il; i ++ ) {\n\n\t\t\tconst light = lights[ i ];\n\t\t\tconst shadow = light.shadow;\n\n\t\t\tif ( shadow === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLShadowMap:', light, 'has no shadow.' );\n\t\t\t\tcontinue;\n\n\t\t\t}\n\n\t\t\tif ( shadow.autoUpdate === false && shadow.needsUpdate === false ) continue;\n\n\t\t\t_shadowMapSize.copy( shadow.mapSize );\n\n\t\t\tconst shadowFrameExtents = shadow.getFrameExtents();\n\n\t\t\t_shadowMapSize.multiply( shadowFrameExtents );\n\n\t\t\t_viewportSize.copy( shadow.mapSize );\n\n\t\t\tif ( _shadowMapSize.x > maxTextureSize || _shadowMapSize.y > maxTextureSize ) {\n\n\t\t\t\tif ( _shadowMapSize.x > maxTextureSize ) {\n\n\t\t\t\t\t_viewportSize.x = Math.floor( maxTextureSize / shadowFrameExtents.x );\n\t\t\t\t\t_shadowMapSize.x = _viewportSize.x * shadowFrameExtents.x;\n\t\t\t\t\tshadow.mapSize.x = _viewportSize.x;\n\n\t\t\t\t}\n\n\t\t\t\tif ( _shadowMapSize.y > maxTextureSize ) {\n\n\t\t\t\t\t_viewportSize.y = Math.floor( maxTextureSize / shadowFrameExtents.y );\n\t\t\t\t\t_shadowMapSize.y = _viewportSize.y * shadowFrameExtents.y;\n\t\t\t\t\tshadow.mapSize.y = _viewportSize.y;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( shadow.map === null && ! shadow.isPointLightShadow && this.type === VSMShadowMap ) {\n\n\t\t\t\tconst pars = { minFilter: LinearFilter, magFilter: LinearFilter, format: RGBAFormat };\n\n\t\t\t\tshadow.map = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y, pars );\n\t\t\t\tshadow.map.texture.name = light.name + '.shadowMap';\n\n\t\t\t\tshadow.mapPass = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y, pars );\n\n\t\t\t\tshadow.camera.updateProjectionMatrix();\n\n\t\t\t}\n\n\t\t\tif ( shadow.map === null ) {\n\n\t\t\t\tconst pars = { minFilter: NearestFilter, magFilter: NearestFilter, format: RGBAFormat };\n\n\t\t\t\tshadow.map = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y, pars );\n\t\t\t\tshadow.map.texture.name = light.name + '.shadowMap';\n\n\t\t\t\tshadow.camera.updateProjectionMatrix();\n\n\t\t\t}\n\n\t\t\t_renderer.setRenderTarget( shadow.map );\n\t\t\t_renderer.clear();\n\n\t\t\tconst viewportCount = shadow.getViewportCount();\n\n\t\t\tfor ( let vp = 0; vp < viewportCount; vp ++ ) {\n\n\t\t\t\tconst viewport = shadow.getViewport( vp );\n\n\t\t\t\t_viewport.set(\n\t\t\t\t\t_viewportSize.x * viewport.x,\n\t\t\t\t\t_viewportSize.y * viewport.y,\n\t\t\t\t\t_viewportSize.x * viewport.z,\n\t\t\t\t\t_viewportSize.y * viewport.w\n\t\t\t\t);\n\n\t\t\t\t_state.viewport( _viewport );\n\n\t\t\t\tshadow.updateMatrices( light, vp );\n\n\t\t\t\t_frustum = shadow.getFrustum();\n\n\t\t\t\trenderObject( scene, camera, shadow.camera, light, this.type );\n\n\t\t\t}\n\n\t\t\t// do blur pass for VSM\n\n\t\t\tif ( ! shadow.isPointLightShadow && this.type === VSMShadowMap ) {\n\n\t\t\t\tVSMPass( shadow, camera );\n\n\t\t\t}\n\n\t\t\tshadow.needsUpdate = false;\n\n\t\t}\n\n\t\tscope.needsUpdate = false;\n\n\t\t_renderer.setRenderTarget( currentRenderTarget, activeCubeFace, activeMipmapLevel );\n\n\t};\n\n\tfunction VSMPass( shadow, camera ) {\n\n\t\tconst geometry = _objects.update( fullScreenMesh );\n\n\t\t// vertical pass\n\n\t\tshadowMaterialVertical.uniforms.shadow_pass.value = shadow.map.texture;\n\t\tshadowMaterialVertical.uniforms.resolution.value = shadow.mapSize;\n\t\tshadowMaterialVertical.uniforms.radius.value = shadow.radius;\n\t\t_renderer.setRenderTarget( shadow.mapPass );\n\t\t_renderer.clear();\n\t\t_renderer.renderBufferDirect( camera, null, geometry, shadowMaterialVertical, fullScreenMesh, null );\n\n\t\t// horizontal pass\n\n\t\tshadowMaterialHorizontal.uniforms.shadow_pass.value = shadow.mapPass.texture;\n\t\tshadowMaterialHorizontal.uniforms.resolution.value = shadow.mapSize;\n\t\tshadowMaterialHorizontal.uniforms.radius.value = shadow.radius;\n\t\t_renderer.setRenderTarget( shadow.map );\n\t\t_renderer.clear();\n\t\t_renderer.renderBufferDirect( camera, null, geometry, shadowMaterialHorizontal, fullScreenMesh, null );\n\n\t}\n\n\tfunction getDepthMaterialVariant( useMorphing, useSkinning, useInstancing ) {\n\n\t\tconst index = useMorphing << 0 | useSkinning << 1 | useInstancing << 2;\n\n\t\tlet material = _depthMaterials[ index ];\n\n\t\tif ( material === undefined ) {\n\n\t\t\tmaterial = new MeshDepthMaterial( {\n\n\t\t\t\tdepthPacking: RGBADepthPacking,\n\n\t\t\t\tmorphTargets: useMorphing,\n\t\t\t\tskinning: useSkinning\n\n\t\t\t} );\n\n\t\t\t_depthMaterials[ index ] = material;\n\n\t\t}\n\n\t\treturn material;\n\n\t}\n\n\tfunction getDistanceMaterialVariant( useMorphing, useSkinning, useInstancing ) {\n\n\t\tconst index = useMorphing << 0 | useSkinning << 1 | useInstancing << 2;\n\n\t\tlet material = _distanceMaterials[ index ];\n\n\t\tif ( material === undefined ) {\n\n\t\t\tmaterial = new MeshDistanceMaterial( {\n\n\t\t\t\tmorphTargets: useMorphing,\n\t\t\t\tskinning: useSkinning\n\n\t\t\t} );\n\n\t\t\t_distanceMaterials[ index ] = material;\n\n\t\t}\n\n\t\treturn material;\n\n\t}\n\n\tfunction getDepthMaterial( object, geometry, material, light, shadowCameraNear, shadowCameraFar, type ) {\n\n\t\tlet result = null;\n\n\t\tlet getMaterialVariant = getDepthMaterialVariant;\n\t\tlet customMaterial = object.customDepthMaterial;\n\n\t\tif ( light.isPointLight === true ) {\n\n\t\t\tgetMaterialVariant = getDistanceMaterialVariant;\n\t\t\tcustomMaterial = object.customDistanceMaterial;\n\n\t\t}\n\n\t\tif ( customMaterial === undefined ) {\n\n\t\t\tlet useMorphing = false;\n\n\t\t\tif ( material.morphTargets === true ) {\n\n\t\t\t\tuseMorphing = geometry.morphAttributes && geometry.morphAttributes.position && geometry.morphAttributes.position.length > 0;\n\n\t\t\t}\n\n\t\t\tlet useSkinning = false;\n\n\t\t\tif ( object.isSkinnedMesh === true ) {\n\n\t\t\t\tif ( material.skinning === true ) {\n\n\t\t\t\t\tuseSkinning = true;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.warn( 'THREE.WebGLShadowMap: THREE.SkinnedMesh with material.skinning set to false:', object );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tconst useInstancing = object.isInstancedMesh === true;\n\n\t\t\tresult = getMaterialVariant( useMorphing, useSkinning, useInstancing );\n\n\t\t} else {\n\n\t\t\tresult = customMaterial;\n\n\t\t}\n\n\t\tif ( _renderer.localClippingEnabled &&\n\t\t\t\tmaterial.clipShadows === true &&\n\t\t\t\tmaterial.clippingPlanes.length !== 0 ) {\n\n\t\t\t// in this case we need a unique material instance reflecting the\n\t\t\t// appropriate state\n\n\t\t\tconst keyA = result.uuid, keyB = material.uuid;\n\n\t\t\tlet materialsForVariant = _materialCache[ keyA ];\n\n\t\t\tif ( materialsForVariant === undefined ) {\n\n\t\t\t\tmaterialsForVariant = {};\n\t\t\t\t_materialCache[ keyA ] = materialsForVariant;\n\n\t\t\t}\n\n\t\t\tlet cachedMaterial = materialsForVariant[ keyB ];\n\n\t\t\tif ( cachedMaterial === undefined ) {\n\n\t\t\t\tcachedMaterial = result.clone();\n\t\t\t\tmaterialsForVariant[ keyB ] = cachedMaterial;\n\n\t\t\t}\n\n\t\t\tresult = cachedMaterial;\n\n\t\t}\n\n\t\tresult.visible = material.visible;\n\t\tresult.wireframe = material.wireframe;\n\n\t\tif ( type === VSMShadowMap ) {\n\n\t\t\tresult.side = ( material.shadowSide !== null ) ? material.shadowSide : material.side;\n\n\t\t} else {\n\n\t\t\tresult.side = ( material.shadowSide !== null ) ? material.shadowSide : shadowSide[ material.side ];\n\n\t\t}\n\n\t\tresult.clipShadows = material.clipShadows;\n\t\tresult.clippingPlanes = material.clippingPlanes;\n\t\tresult.clipIntersection = material.clipIntersection;\n\n\t\tresult.wireframeLinewidth = material.wireframeLinewidth;\n\t\tresult.linewidth = material.linewidth;\n\n\t\tif ( light.isPointLight === true && result.isMeshDistanceMaterial === true ) {\n\n\t\t\tresult.referencePosition.setFromMatrixPosition( light.matrixWorld );\n\t\t\tresult.nearDistance = shadowCameraNear;\n\t\t\tresult.farDistance = shadowCameraFar;\n\n\t\t}\n\n\t\treturn result;\n\n\t}\n\n\tfunction renderObject( object, camera, shadowCamera, light, type ) {\n\n\t\tif ( object.visible === false ) return;\n\n\t\tconst visible = object.layers.test( camera.layers );\n\n\t\tif ( visible && ( object.isMesh || object.isLine || object.isPoints ) ) {\n\n\t\t\tif ( ( object.castShadow || ( object.receiveShadow && type === VSMShadowMap ) ) && ( ! object.frustumCulled || _frustum.intersectsObject( object ) ) ) {\n\n\t\t\t\tobject.modelViewMatrix.multiplyMatrices( shadowCamera.matrixWorldInverse, object.matrixWorld );\n\n\t\t\t\tconst geometry = _objects.update( object );\n\t\t\t\tconst material = object.material;\n\n\t\t\t\tif ( Array.isArray( material ) ) {\n\n\t\t\t\t\tconst groups = geometry.groups;\n\n\t\t\t\t\tfor ( let k = 0, kl = groups.length; k < kl; k ++ ) {\n\n\t\t\t\t\t\tconst group = groups[ k ];\n\t\t\t\t\t\tconst groupMaterial = material[ group.materialIndex ];\n\n\t\t\t\t\t\tif ( groupMaterial && groupMaterial.visible ) {\n\n\t\t\t\t\t\t\tconst depthMaterial = getDepthMaterial( object, geometry, groupMaterial, light, shadowCamera.near, shadowCamera.far, type );\n\n\t\t\t\t\t\t\t_renderer.renderBufferDirect( shadowCamera, null, geometry, depthMaterial, object, group );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t} else if ( material.visible ) {\n\n\t\t\t\t\tconst depthMaterial = getDepthMaterial( object, geometry, material, light, shadowCamera.near, shadowCamera.far, type );\n\n\t\t\t\t\t_renderer.renderBufferDirect( shadowCamera, null, geometry, depthMaterial, object, null );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst children = object.children;\n\n\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\trenderObject( children[ i ], camera, shadowCamera, light, type );\n\n\t\t}\n\n\t}\n\n}\n\nfunction WebGLState( gl, extensions, capabilities ) {\n\n\tconst isWebGL2 = capabilities.isWebGL2;\n\n\tfunction ColorBuffer() {\n\n\t\tlet locked = false;\n\n\t\tconst color = new Vector4();\n\t\tlet currentColorMask = null;\n\t\tconst currentColorClear = new Vector4( 0, 0, 0, 0 );\n\n\t\treturn {\n\n\t\t\tsetMask: function ( colorMask ) {\n\n\t\t\t\tif ( currentColorMask !== colorMask && ! locked ) {\n\n\t\t\t\t\tgl.colorMask( colorMask, colorMask, colorMask, colorMask );\n\t\t\t\t\tcurrentColorMask = colorMask;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tsetLocked: function ( lock ) {\n\n\t\t\t\tlocked = lock;\n\n\t\t\t},\n\n\t\t\tsetClear: function ( r, g, b, a, premultipliedAlpha ) {\n\n\t\t\t\tif ( premultipliedAlpha === true ) {\n\n\t\t\t\t\tr *= a; g *= a; b *= a;\n\n\t\t\t\t}\n\n\t\t\t\tcolor.set( r, g, b, a );\n\n\t\t\t\tif ( currentColorClear.equals( color ) === false ) {\n\n\t\t\t\t\tgl.clearColor( r, g, b, a );\n\t\t\t\t\tcurrentColorClear.copy( color );\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\treset: function () {\n\n\t\t\t\tlocked = false;\n\n\t\t\t\tcurrentColorMask = null;\n\t\t\t\tcurrentColorClear.set( - 1, 0, 0, 0 ); // set to invalid state\n\n\t\t\t}\n\n\t\t};\n\n\t}\n\n\tfunction DepthBuffer() {\n\n\t\tlet locked = false;\n\n\t\tlet currentDepthMask = null;\n\t\tlet currentDepthFunc = null;\n\t\tlet currentDepthClear = null;\n\n\t\treturn {\n\n\t\t\tsetTest: function ( depthTest ) {\n\n\t\t\t\tif ( depthTest ) {\n\n\t\t\t\t\tenable( 2929 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tdisable( 2929 );\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tsetMask: function ( depthMask ) {\n\n\t\t\t\tif ( currentDepthMask !== depthMask && ! locked ) {\n\n\t\t\t\t\tgl.depthMask( depthMask );\n\t\t\t\t\tcurrentDepthMask = depthMask;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tsetFunc: function ( depthFunc ) {\n\n\t\t\t\tif ( currentDepthFunc !== depthFunc ) {\n\n\t\t\t\t\tif ( depthFunc ) {\n\n\t\t\t\t\t\tswitch ( depthFunc ) {\n\n\t\t\t\t\t\t\tcase NeverDepth:\n\n\t\t\t\t\t\t\t\tgl.depthFunc( 512 );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tcase AlwaysDepth:\n\n\t\t\t\t\t\t\t\tgl.depthFunc( 519 );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tcase LessDepth:\n\n\t\t\t\t\t\t\t\tgl.depthFunc( 513 );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tcase LessEqualDepth:\n\n\t\t\t\t\t\t\t\tgl.depthFunc( 515 );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tcase EqualDepth:\n\n\t\t\t\t\t\t\t\tgl.depthFunc( 514 );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tcase GreaterEqualDepth:\n\n\t\t\t\t\t\t\t\tgl.depthFunc( 518 );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tcase GreaterDepth:\n\n\t\t\t\t\t\t\t\tgl.depthFunc( 516 );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tcase NotEqualDepth:\n\n\t\t\t\t\t\t\t\tgl.depthFunc( 517 );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tdefault:\n\n\t\t\t\t\t\t\t\tgl.depthFunc( 515 );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tgl.depthFunc( 515 );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tcurrentDepthFunc = depthFunc;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tsetLocked: function ( lock ) {\n\n\t\t\t\tlocked = lock;\n\n\t\t\t},\n\n\t\t\tsetClear: function ( depth ) {\n\n\t\t\t\tif ( currentDepthClear !== depth ) {\n\n\t\t\t\t\tgl.clearDepth( depth );\n\t\t\t\t\tcurrentDepthClear = depth;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\treset: function () {\n\n\t\t\t\tlocked = false;\n\n\t\t\t\tcurrentDepthMask = null;\n\t\t\t\tcurrentDepthFunc = null;\n\t\t\t\tcurrentDepthClear = null;\n\n\t\t\t}\n\n\t\t};\n\n\t}\n\n\tfunction StencilBuffer() {\n\n\t\tlet locked = false;\n\n\t\tlet currentStencilMask = null;\n\t\tlet currentStencilFunc = null;\n\t\tlet currentStencilRef = null;\n\t\tlet currentStencilFuncMask = null;\n\t\tlet currentStencilFail = null;\n\t\tlet currentStencilZFail = null;\n\t\tlet currentStencilZPass = null;\n\t\tlet currentStencilClear = null;\n\n\t\treturn {\n\n\t\t\tsetTest: function ( stencilTest ) {\n\n\t\t\t\tif ( ! locked ) {\n\n\t\t\t\t\tif ( stencilTest ) {\n\n\t\t\t\t\t\tenable( 2960 );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tdisable( 2960 );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tsetMask: function ( stencilMask ) {\n\n\t\t\t\tif ( currentStencilMask !== stencilMask && ! locked ) {\n\n\t\t\t\t\tgl.stencilMask( stencilMask );\n\t\t\t\t\tcurrentStencilMask = stencilMask;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tsetFunc: function ( stencilFunc, stencilRef, stencilMask ) {\n\n\t\t\t\tif ( currentStencilFunc !== stencilFunc ||\n\t\t\t\t     currentStencilRef !== stencilRef ||\n\t\t\t\t     currentStencilFuncMask !== stencilMask ) {\n\n\t\t\t\t\tgl.stencilFunc( stencilFunc, stencilRef, stencilMask );\n\n\t\t\t\t\tcurrentStencilFunc = stencilFunc;\n\t\t\t\t\tcurrentStencilRef = stencilRef;\n\t\t\t\t\tcurrentStencilFuncMask = stencilMask;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tsetOp: function ( stencilFail, stencilZFail, stencilZPass ) {\n\n\t\t\t\tif ( currentStencilFail !== stencilFail ||\n\t\t\t\t     currentStencilZFail !== stencilZFail ||\n\t\t\t\t     currentStencilZPass !== stencilZPass ) {\n\n\t\t\t\t\tgl.stencilOp( stencilFail, stencilZFail, stencilZPass );\n\n\t\t\t\t\tcurrentStencilFail = stencilFail;\n\t\t\t\t\tcurrentStencilZFail = stencilZFail;\n\t\t\t\t\tcurrentStencilZPass = stencilZPass;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tsetLocked: function ( lock ) {\n\n\t\t\t\tlocked = lock;\n\n\t\t\t},\n\n\t\t\tsetClear: function ( stencil ) {\n\n\t\t\t\tif ( currentStencilClear !== stencil ) {\n\n\t\t\t\t\tgl.clearStencil( stencil );\n\t\t\t\t\tcurrentStencilClear = stencil;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\treset: function () {\n\n\t\t\t\tlocked = false;\n\n\t\t\t\tcurrentStencilMask = null;\n\t\t\t\tcurrentStencilFunc = null;\n\t\t\t\tcurrentStencilRef = null;\n\t\t\t\tcurrentStencilFuncMask = null;\n\t\t\t\tcurrentStencilFail = null;\n\t\t\t\tcurrentStencilZFail = null;\n\t\t\t\tcurrentStencilZPass = null;\n\t\t\t\tcurrentStencilClear = null;\n\n\t\t\t}\n\n\t\t};\n\n\t}\n\n\t//\n\n\tconst colorBuffer = new ColorBuffer();\n\tconst depthBuffer = new DepthBuffer();\n\tconst stencilBuffer = new StencilBuffer();\n\n\tlet enabledCapabilities = {};\n\n\tlet currentProgram = null;\n\n\tlet currentBlendingEnabled = null;\n\tlet currentBlending = null;\n\tlet currentBlendEquation = null;\n\tlet currentBlendSrc = null;\n\tlet currentBlendDst = null;\n\tlet currentBlendEquationAlpha = null;\n\tlet currentBlendSrcAlpha = null;\n\tlet currentBlendDstAlpha = null;\n\tlet currentPremultipledAlpha = false;\n\n\tlet currentFlipSided = null;\n\tlet currentCullFace = null;\n\n\tlet currentLineWidth = null;\n\n\tlet currentPolygonOffsetFactor = null;\n\tlet currentPolygonOffsetUnits = null;\n\n\tconst maxTextures = gl.getParameter( 35661 );\n\n\tlet lineWidthAvailable = false;\n\tlet version = 0;\n\tconst glVersion = gl.getParameter( 7938 );\n\n\tif ( glVersion.indexOf( 'WebGL' ) !== - 1 ) {\n\n\t\tversion = parseFloat( /^WebGL (\\d)/.exec( glVersion )[ 1 ] );\n\t\tlineWidthAvailable = ( version >= 1.0 );\n\n\t} else if ( glVersion.indexOf( 'OpenGL ES' ) !== - 1 ) {\n\n\t\tversion = parseFloat( /^OpenGL ES (\\d)/.exec( glVersion )[ 1 ] );\n\t\tlineWidthAvailable = ( version >= 2.0 );\n\n\t}\n\n\tlet currentTextureSlot = null;\n\tlet currentBoundTextures = {};\n\n\tconst currentScissor = new Vector4();\n\tconst currentViewport = new Vector4();\n\n\tfunction createTexture( type, target, count ) {\n\n\t\tconst data = new Uint8Array( 4 ); // 4 is required to match default unpack alignment of 4.\n\t\tconst texture = gl.createTexture();\n\n\t\tgl.bindTexture( type, texture );\n\t\tgl.texParameteri( type, 10241, 9728 );\n\t\tgl.texParameteri( type, 10240, 9728 );\n\n\t\tfor ( let i = 0; i < count; i ++ ) {\n\n\t\t\tgl.texImage2D( target + i, 0, 6408, 1, 1, 0, 6408, 5121, data );\n\n\t\t}\n\n\t\treturn texture;\n\n\t}\n\n\tconst emptyTextures = {};\n\temptyTextures[ 3553 ] = createTexture( 3553, 3553, 1 );\n\temptyTextures[ 34067 ] = createTexture( 34067, 34069, 6 );\n\n\t// init\n\n\tcolorBuffer.setClear( 0, 0, 0, 1 );\n\tdepthBuffer.setClear( 1 );\n\tstencilBuffer.setClear( 0 );\n\n\tenable( 2929 );\n\tdepthBuffer.setFunc( LessEqualDepth );\n\n\tsetFlipSided( false );\n\tsetCullFace( CullFaceBack );\n\tenable( 2884 );\n\n\tsetBlending( NoBlending );\n\n\t//\n\n\tfunction enable( id ) {\n\n\t\tif ( enabledCapabilities[ id ] !== true ) {\n\n\t\t\tgl.enable( id );\n\t\t\tenabledCapabilities[ id ] = true;\n\n\t\t}\n\n\t}\n\n\tfunction disable( id ) {\n\n\t\tif ( enabledCapabilities[ id ] !== false ) {\n\n\t\t\tgl.disable( id );\n\t\t\tenabledCapabilities[ id ] = false;\n\n\t\t}\n\n\t}\n\n\tfunction useProgram( program ) {\n\n\t\tif ( currentProgram !== program ) {\n\n\t\t\tgl.useProgram( program );\n\n\t\t\tcurrentProgram = program;\n\n\t\t\treturn true;\n\n\t\t}\n\n\t\treturn false;\n\n\t}\n\n\tconst equationToGL = {\n\t\t[ AddEquation ]: 32774,\n\t\t[ SubtractEquation ]: 32778,\n\t\t[ ReverseSubtractEquation ]: 32779\n\t};\n\n\tif ( isWebGL2 ) {\n\n\t\tequationToGL[ MinEquation ] = 32775;\n\t\tequationToGL[ MaxEquation ] = 32776;\n\n\t} else {\n\n\t\tconst extension = extensions.get( 'EXT_blend_minmax' );\n\n\t\tif ( extension !== null ) {\n\n\t\t\tequationToGL[ MinEquation ] = extension.MIN_EXT;\n\t\t\tequationToGL[ MaxEquation ] = extension.MAX_EXT;\n\n\t\t}\n\n\t}\n\n\tconst factorToGL = {\n\t\t[ ZeroFactor ]: 0,\n\t\t[ OneFactor ]: 1,\n\t\t[ SrcColorFactor ]: 768,\n\t\t[ SrcAlphaFactor ]: 770,\n\t\t[ SrcAlphaSaturateFactor ]: 776,\n\t\t[ DstColorFactor ]: 774,\n\t\t[ DstAlphaFactor ]: 772,\n\t\t[ OneMinusSrcColorFactor ]: 769,\n\t\t[ OneMinusSrcAlphaFactor ]: 771,\n\t\t[ OneMinusDstColorFactor ]: 775,\n\t\t[ OneMinusDstAlphaFactor ]: 773\n\t};\n\n\tfunction setBlending( blending, blendEquation, blendSrc, blendDst, blendEquationAlpha, blendSrcAlpha, blendDstAlpha, premultipliedAlpha ) {\n\n\t\tif ( blending === NoBlending ) {\n\n\t\t\tif ( currentBlendingEnabled ) {\n\n\t\t\t\tdisable( 3042 );\n\t\t\t\tcurrentBlendingEnabled = false;\n\n\t\t\t}\n\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( ! currentBlendingEnabled ) {\n\n\t\t\tenable( 3042 );\n\t\t\tcurrentBlendingEnabled = true;\n\n\t\t}\n\n\t\tif ( blending !== CustomBlending ) {\n\n\t\t\tif ( blending !== currentBlending || premultipliedAlpha !== currentPremultipledAlpha ) {\n\n\t\t\t\tif ( currentBlendEquation !== AddEquation || currentBlendEquationAlpha !== AddEquation ) {\n\n\t\t\t\t\tgl.blendEquation( 32774 );\n\n\t\t\t\t\tcurrentBlendEquation = AddEquation;\n\t\t\t\t\tcurrentBlendEquationAlpha = AddEquation;\n\n\t\t\t\t}\n\n\t\t\t\tif ( premultipliedAlpha ) {\n\n\t\t\t\t\tswitch ( blending ) {\n\n\t\t\t\t\t\tcase NormalBlending:\n\t\t\t\t\t\t\tgl.blendFuncSeparate( 1, 771, 1, 771 );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase AdditiveBlending:\n\t\t\t\t\t\t\tgl.blendFunc( 1, 1 );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase SubtractiveBlending:\n\t\t\t\t\t\t\tgl.blendFuncSeparate( 0, 0, 769, 771 );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase MultiplyBlending:\n\t\t\t\t\t\t\tgl.blendFuncSeparate( 0, 768, 0, 770 );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tdefault:\n\t\t\t\t\t\t\tconsole.error( 'THREE.WebGLState: Invalid blending: ', blending );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\tswitch ( blending ) {\n\n\t\t\t\t\t\tcase NormalBlending:\n\t\t\t\t\t\t\tgl.blendFuncSeparate( 770, 771, 1, 771 );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase AdditiveBlending:\n\t\t\t\t\t\t\tgl.blendFunc( 770, 1 );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase SubtractiveBlending:\n\t\t\t\t\t\t\tgl.blendFunc( 0, 769 );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase MultiplyBlending:\n\t\t\t\t\t\t\tgl.blendFunc( 0, 768 );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tdefault:\n\t\t\t\t\t\t\tconsole.error( 'THREE.WebGLState: Invalid blending: ', blending );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tcurrentBlendSrc = null;\n\t\t\t\tcurrentBlendDst = null;\n\t\t\t\tcurrentBlendSrcAlpha = null;\n\t\t\t\tcurrentBlendDstAlpha = null;\n\n\t\t\t\tcurrentBlending = blending;\n\t\t\t\tcurrentPremultipledAlpha = premultipliedAlpha;\n\n\t\t\t}\n\n\t\t\treturn;\n\n\t\t}\n\n\t\t// custom blending\n\n\t\tblendEquationAlpha = blendEquationAlpha || blendEquation;\n\t\tblendSrcAlpha = blendSrcAlpha || blendSrc;\n\t\tblendDstAlpha = blendDstAlpha || blendDst;\n\n\t\tif ( blendEquation !== currentBlendEquation || blendEquationAlpha !== currentBlendEquationAlpha ) {\n\n\t\t\tgl.blendEquationSeparate( equationToGL[ blendEquation ], equationToGL[ blendEquationAlpha ] );\n\n\t\t\tcurrentBlendEquation = blendEquation;\n\t\t\tcurrentBlendEquationAlpha = blendEquationAlpha;\n\n\t\t}\n\n\t\tif ( blendSrc !== currentBlendSrc || blendDst !== currentBlendDst || blendSrcAlpha !== currentBlendSrcAlpha || blendDstAlpha !== currentBlendDstAlpha ) {\n\n\t\t\tgl.blendFuncSeparate( factorToGL[ blendSrc ], factorToGL[ blendDst ], factorToGL[ blendSrcAlpha ], factorToGL[ blendDstAlpha ] );\n\n\t\t\tcurrentBlendSrc = blendSrc;\n\t\t\tcurrentBlendDst = blendDst;\n\t\t\tcurrentBlendSrcAlpha = blendSrcAlpha;\n\t\t\tcurrentBlendDstAlpha = blendDstAlpha;\n\n\t\t}\n\n\t\tcurrentBlending = blending;\n\t\tcurrentPremultipledAlpha = null;\n\n\t}\n\n\tfunction setMaterial( material, frontFaceCW ) {\n\n\t\tmaterial.side === DoubleSide\n\t\t\t? disable( 2884 )\n\t\t\t: enable( 2884 );\n\n\t\tlet flipSided = ( material.side === BackSide );\n\t\tif ( frontFaceCW ) flipSided = ! flipSided;\n\n\t\tsetFlipSided( flipSided );\n\n\t\t( material.blending === NormalBlending && material.transparent === false )\n\t\t\t? setBlending( NoBlending )\n\t\t\t: setBlending( material.blending, material.blendEquation, material.blendSrc, material.blendDst, material.blendEquationAlpha, material.blendSrcAlpha, material.blendDstAlpha, material.premultipliedAlpha );\n\n\t\tdepthBuffer.setFunc( material.depthFunc );\n\t\tdepthBuffer.setTest( material.depthTest );\n\t\tdepthBuffer.setMask( material.depthWrite );\n\t\tcolorBuffer.setMask( material.colorWrite );\n\n\t\tconst stencilWrite = material.stencilWrite;\n\t\tstencilBuffer.setTest( stencilWrite );\n\t\tif ( stencilWrite ) {\n\n\t\t\tstencilBuffer.setMask( material.stencilWriteMask );\n\t\t\tstencilBuffer.setFunc( material.stencilFunc, material.stencilRef, material.stencilFuncMask );\n\t\t\tstencilBuffer.setOp( material.stencilFail, material.stencilZFail, material.stencilZPass );\n\n\t\t}\n\n\t\tsetPolygonOffset( material.polygonOffset, material.polygonOffsetFactor, material.polygonOffsetUnits );\n\n\t}\n\n\t//\n\n\tfunction setFlipSided( flipSided ) {\n\n\t\tif ( currentFlipSided !== flipSided ) {\n\n\t\t\tif ( flipSided ) {\n\n\t\t\t\tgl.frontFace( 2304 );\n\n\t\t\t} else {\n\n\t\t\t\tgl.frontFace( 2305 );\n\n\t\t\t}\n\n\t\t\tcurrentFlipSided = flipSided;\n\n\t\t}\n\n\t}\n\n\tfunction setCullFace( cullFace ) {\n\n\t\tif ( cullFace !== CullFaceNone ) {\n\n\t\t\tenable( 2884 );\n\n\t\t\tif ( cullFace !== currentCullFace ) {\n\n\t\t\t\tif ( cullFace === CullFaceBack ) {\n\n\t\t\t\t\tgl.cullFace( 1029 );\n\n\t\t\t\t} else if ( cullFace === CullFaceFront ) {\n\n\t\t\t\t\tgl.cullFace( 1028 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tgl.cullFace( 1032 );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tdisable( 2884 );\n\n\t\t}\n\n\t\tcurrentCullFace = cullFace;\n\n\t}\n\n\tfunction setLineWidth( width ) {\n\n\t\tif ( width !== currentLineWidth ) {\n\n\t\t\tif ( lineWidthAvailable ) gl.lineWidth( width );\n\n\t\t\tcurrentLineWidth = width;\n\n\t\t}\n\n\t}\n\n\tfunction setPolygonOffset( polygonOffset, factor, units ) {\n\n\t\tif ( polygonOffset ) {\n\n\t\t\tenable( 32823 );\n\n\t\t\tif ( currentPolygonOffsetFactor !== factor || currentPolygonOffsetUnits !== units ) {\n\n\t\t\t\tgl.polygonOffset( factor, units );\n\n\t\t\t\tcurrentPolygonOffsetFactor = factor;\n\t\t\t\tcurrentPolygonOffsetUnits = units;\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tdisable( 32823 );\n\n\t\t}\n\n\t}\n\n\tfunction setScissorTest( scissorTest ) {\n\n\t\tif ( scissorTest ) {\n\n\t\t\tenable( 3089 );\n\n\t\t} else {\n\n\t\t\tdisable( 3089 );\n\n\t\t}\n\n\t}\n\n\t// texture\n\n\tfunction activeTexture( webglSlot ) {\n\n\t\tif ( webglSlot === undefined ) webglSlot = 33984 + maxTextures - 1;\n\n\t\tif ( currentTextureSlot !== webglSlot ) {\n\n\t\t\tgl.activeTexture( webglSlot );\n\t\t\tcurrentTextureSlot = webglSlot;\n\n\t\t}\n\n\t}\n\n\tfunction bindTexture( webglType, webglTexture ) {\n\n\t\tif ( currentTextureSlot === null ) {\n\n\t\t\tactiveTexture();\n\n\t\t}\n\n\t\tlet boundTexture = currentBoundTextures[ currentTextureSlot ];\n\n\t\tif ( boundTexture === undefined ) {\n\n\t\t\tboundTexture = { type: undefined, texture: undefined };\n\t\t\tcurrentBoundTextures[ currentTextureSlot ] = boundTexture;\n\n\t\t}\n\n\t\tif ( boundTexture.type !== webglType || boundTexture.texture !== webglTexture ) {\n\n\t\t\tgl.bindTexture( webglType, webglTexture || emptyTextures[ webglType ] );\n\n\t\t\tboundTexture.type = webglType;\n\t\t\tboundTexture.texture = webglTexture;\n\n\t\t}\n\n\t}\n\n\tfunction unbindTexture() {\n\n\t\tconst boundTexture = currentBoundTextures[ currentTextureSlot ];\n\n\t\tif ( boundTexture !== undefined && boundTexture.type !== undefined ) {\n\n\t\t\tgl.bindTexture( boundTexture.type, null );\n\n\t\t\tboundTexture.type = undefined;\n\t\t\tboundTexture.texture = undefined;\n\n\t\t}\n\n\t}\n\n\tfunction compressedTexImage2D() {\n\n\t\ttry {\n\n\t\t\tgl.compressedTexImage2D.apply( gl, arguments );\n\n\t\t} catch ( error ) {\n\n\t\t\tconsole.error( 'THREE.WebGLState:', error );\n\n\t\t}\n\n\t}\n\n\tfunction texImage2D() {\n\n\t\ttry {\n\n\t\t\tgl.texImage2D.apply( gl, arguments );\n\n\t\t} catch ( error ) {\n\n\t\t\tconsole.error( 'THREE.WebGLState:', error );\n\n\t\t}\n\n\t}\n\n\tfunction texImage3D() {\n\n\t\ttry {\n\n\t\t\tgl.texImage3D.apply( gl, arguments );\n\n\t\t} catch ( error ) {\n\n\t\t\tconsole.error( 'THREE.WebGLState:', error );\n\n\t\t}\n\n\t}\n\n\t//\n\n\tfunction scissor( scissor ) {\n\n\t\tif ( currentScissor.equals( scissor ) === false ) {\n\n\t\t\tgl.scissor( scissor.x, scissor.y, scissor.z, scissor.w );\n\t\t\tcurrentScissor.copy( scissor );\n\n\t\t}\n\n\t}\n\n\tfunction viewport( viewport ) {\n\n\t\tif ( currentViewport.equals( viewport ) === false ) {\n\n\t\t\tgl.viewport( viewport.x, viewport.y, viewport.z, viewport.w );\n\t\t\tcurrentViewport.copy( viewport );\n\n\t\t}\n\n\t}\n\n\t//\n\n\tfunction reset() {\n\n\t\tenabledCapabilities = {};\n\n\t\tcurrentTextureSlot = null;\n\t\tcurrentBoundTextures = {};\n\n\t\tcurrentProgram = null;\n\n\t\tcurrentBlendingEnabled = null;\n\t\tcurrentBlending = null;\n\t\tcurrentBlendEquation = null;\n\t\tcurrentBlendSrc = null;\n\t\tcurrentBlendDst = null;\n\t\tcurrentBlendEquationAlpha = null;\n\t\tcurrentBlendSrcAlpha = null;\n\t\tcurrentBlendDstAlpha = null;\n\t\tcurrentPremultipledAlpha = false;\n\n\t\tcurrentFlipSided = null;\n\t\tcurrentCullFace = null;\n\n\t\tcurrentLineWidth = null;\n\n\t\tcurrentPolygonOffsetFactor = null;\n\t\tcurrentPolygonOffsetUnits = null;\n\n\t\tcolorBuffer.reset();\n\t\tdepthBuffer.reset();\n\t\tstencilBuffer.reset();\n\n\t}\n\n\treturn {\n\n\t\tbuffers: {\n\t\t\tcolor: colorBuffer,\n\t\t\tdepth: depthBuffer,\n\t\t\tstencil: stencilBuffer\n\t\t},\n\n\t\tenable: enable,\n\t\tdisable: disable,\n\n\t\tuseProgram: useProgram,\n\n\t\tsetBlending: setBlending,\n\t\tsetMaterial: setMaterial,\n\n\t\tsetFlipSided: setFlipSided,\n\t\tsetCullFace: setCullFace,\n\n\t\tsetLineWidth: setLineWidth,\n\t\tsetPolygonOffset: setPolygonOffset,\n\n\t\tsetScissorTest: setScissorTest,\n\n\t\tactiveTexture: activeTexture,\n\t\tbindTexture: bindTexture,\n\t\tunbindTexture: unbindTexture,\n\t\tcompressedTexImage2D: compressedTexImage2D,\n\t\ttexImage2D: texImage2D,\n\t\ttexImage3D: texImage3D,\n\n\t\tscissor: scissor,\n\t\tviewport: viewport,\n\n\t\treset: reset\n\n\t};\n\n}\n\nfunction WebGLTextures( _gl, extensions, state, properties, capabilities, utils, info ) {\n\n\tconst isWebGL2 = capabilities.isWebGL2;\n\tconst maxTextures = capabilities.maxTextures;\n\tconst maxCubemapSize = capabilities.maxCubemapSize;\n\tconst maxTextureSize = capabilities.maxTextureSize;\n\tconst maxSamples = capabilities.maxSamples;\n\n\tconst _videoTextures = new WeakMap();\n\tlet _canvas;\n\n\t// cordova iOS (as of 5.0) still uses UIWebView, which provides OffscreenCanvas,\n\t// also OffscreenCanvas.getContext(\"webgl\"), but not OffscreenCanvas.getContext(\"2d\")!\n\t// Some implementations may only implement OffscreenCanvas partially (e.g. lacking 2d).\n\n\tlet useOffscreenCanvas = false;\n\n\ttry {\n\n\t\tuseOffscreenCanvas = typeof OffscreenCanvas !== 'undefined'\n\t\t\t&& ( new OffscreenCanvas( 1, 1 ).getContext( '2d' ) ) !== null;\n\n\t} catch ( err ) {\n\n\t\t// Ignore any errors\n\n\t}\n\n\tfunction createCanvas( width, height ) {\n\n\t\t// Use OffscreenCanvas when available. Specially needed in web workers\n\n\t\treturn useOffscreenCanvas ?\n\t\t\tnew OffscreenCanvas( width, height ) :\n\t\t\tdocument.createElementNS( 'http://www.w3.org/1999/xhtml', 'canvas' );\n\n\t}\n\n\tfunction resizeImage( image, needsPowerOfTwo, needsNewCanvas, maxSize ) {\n\n\t\tlet scale = 1;\n\n\t\t// handle case if texture exceeds max size\n\n\t\tif ( image.width > maxSize || image.height > maxSize ) {\n\n\t\t\tscale = maxSize / Math.max( image.width, image.height );\n\n\t\t}\n\n\t\t// only perform resize if necessary\n\n\t\tif ( scale < 1 || needsPowerOfTwo === true ) {\n\n\t\t\t// only perform resize for certain image types\n\n\t\t\tif ( ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) ||\n\t\t\t\t( typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement ) ||\n\t\t\t\t( typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap ) ) {\n\n\t\t\t\tconst floor = needsPowerOfTwo ? MathUtils.floorPowerOfTwo : Math.floor;\n\n\t\t\t\tconst width = floor( scale * image.width );\n\t\t\t\tconst height = floor( scale * image.height );\n\n\t\t\t\tif ( _canvas === undefined ) _canvas = createCanvas( width, height );\n\n\t\t\t\t// cube textures can't reuse the same canvas\n\n\t\t\t\tconst canvas = needsNewCanvas ? createCanvas( width, height ) : _canvas;\n\n\t\t\t\tcanvas.width = width;\n\t\t\t\tcanvas.height = height;\n\n\t\t\t\tconst context = canvas.getContext( '2d' );\n\t\t\t\tcontext.drawImage( image, 0, 0, width, height );\n\n\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Texture has been resized from (' + image.width + 'x' + image.height + ') to (' + width + 'x' + height + ').' );\n\n\t\t\t\treturn canvas;\n\n\t\t\t} else {\n\n\t\t\t\tif ( 'data' in image ) {\n\n\t\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Image in DataTexture is too big (' + image.width + 'x' + image.height + ').' );\n\n\t\t\t\t}\n\n\t\t\t\treturn image;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn image;\n\n\t}\n\n\tfunction isPowerOfTwo( image ) {\n\n\t\treturn MathUtils.isPowerOfTwo( image.width ) && MathUtils.isPowerOfTwo( image.height );\n\n\t}\n\n\tfunction textureNeedsPowerOfTwo( texture ) {\n\n\t\tif ( isWebGL2 ) return false;\n\n\t\treturn ( texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping ) ||\n\t\t\t( texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter );\n\n\t}\n\n\tfunction textureNeedsGenerateMipmaps( texture, supportsMips ) {\n\n\t\treturn texture.generateMipmaps && supportsMips &&\n\t\t\ttexture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter;\n\n\t}\n\n\tfunction generateMipmap( target, texture, width, height ) {\n\n\t\t_gl.generateMipmap( target );\n\n\t\tconst textureProperties = properties.get( texture );\n\n\t\t// Note: Math.log( x ) * Math.LOG2E used instead of Math.log2( x ) which is not supported by IE11\n\t\ttextureProperties.__maxMipLevel = Math.log( Math.max( width, height ) ) * Math.LOG2E;\n\n\t}\n\n\tfunction getInternalFormat( internalFormatName, glFormat, glType ) {\n\n\t\tif ( isWebGL2 === false ) return glFormat;\n\n\t\tif ( internalFormatName !== null ) {\n\n\t\t\tif ( _gl[ internalFormatName ] !== undefined ) return _gl[ internalFormatName ];\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: Attempt to use non-existing WebGL internal format \\'' + internalFormatName + '\\'' );\n\n\t\t}\n\n\t\tlet internalFormat = glFormat;\n\n\t\tif ( glFormat === 6403 ) {\n\n\t\t\tif ( glType === 5126 ) internalFormat = 33326;\n\t\t\tif ( glType === 5131 ) internalFormat = 33325;\n\t\t\tif ( glType === 5121 ) internalFormat = 33321;\n\n\t\t}\n\n\t\tif ( glFormat === 6407 ) {\n\n\t\t\tif ( glType === 5126 ) internalFormat = 34837;\n\t\t\tif ( glType === 5131 ) internalFormat = 34843;\n\t\t\tif ( glType === 5121 ) internalFormat = 32849;\n\n\t\t}\n\n\t\tif ( glFormat === 6408 ) {\n\n\t\t\tif ( glType === 5126 ) internalFormat = 34836;\n\t\t\tif ( glType === 5131 ) internalFormat = 34842;\n\t\t\tif ( glType === 5121 ) internalFormat = 32856;\n\n\t\t}\n\n\t\tif ( internalFormat === 33325 || internalFormat === 33326 ||\n\t\t\tinternalFormat === 34842 || internalFormat === 34836 ) {\n\n\t\t\textensions.get( 'EXT_color_buffer_float' );\n\n\t\t}\n\n\t\treturn internalFormat;\n\n\t}\n\n\t// Fallback filters for non-power-of-2 textures\n\n\tfunction filterFallback( f ) {\n\n\t\tif ( f === NearestFilter || f === NearestMipmapNearestFilter || f === NearestMipmapLinearFilter ) {\n\n\t\t\treturn 9728;\n\n\t\t}\n\n\t\treturn 9729;\n\n\t}\n\n\t//\n\n\tfunction onTextureDispose( event ) {\n\n\t\tconst texture = event.target;\n\n\t\ttexture.removeEventListener( 'dispose', onTextureDispose );\n\n\t\tdeallocateTexture( texture );\n\n\t\tif ( texture.isVideoTexture ) {\n\n\t\t\t_videoTextures.delete( texture );\n\n\t\t}\n\n\t\tinfo.memory.textures --;\n\n\t}\n\n\tfunction onRenderTargetDispose( event ) {\n\n\t\tconst renderTarget = event.target;\n\n\t\trenderTarget.removeEventListener( 'dispose', onRenderTargetDispose );\n\n\t\tdeallocateRenderTarget( renderTarget );\n\n\t\tinfo.memory.textures --;\n\n\t}\n\n\t//\n\n\tfunction deallocateTexture( texture ) {\n\n\t\tconst textureProperties = properties.get( texture );\n\n\t\tif ( textureProperties.__webglInit === undefined ) return;\n\n\t\t_gl.deleteTexture( textureProperties.__webglTexture );\n\n\t\tproperties.remove( texture );\n\n\t}\n\n\tfunction deallocateRenderTarget( renderTarget ) {\n\n\t\tconst renderTargetProperties = properties.get( renderTarget );\n\t\tconst textureProperties = properties.get( renderTarget.texture );\n\n\t\tif ( ! renderTarget ) return;\n\n\t\tif ( textureProperties.__webglTexture !== undefined ) {\n\n\t\t\t_gl.deleteTexture( textureProperties.__webglTexture );\n\n\t\t}\n\n\t\tif ( renderTarget.depthTexture ) {\n\n\t\t\trenderTarget.depthTexture.dispose();\n\n\t\t}\n\n\t\tif ( renderTarget.isWebGLCubeRenderTarget ) {\n\n\t\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\t\t_gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer[ i ] );\n\t\t\t\tif ( renderTargetProperties.__webglDepthbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer[ i ] );\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\t_gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer );\n\t\t\tif ( renderTargetProperties.__webglDepthbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer );\n\t\t\tif ( renderTargetProperties.__webglMultisampledFramebuffer ) _gl.deleteFramebuffer( renderTargetProperties.__webglMultisampledFramebuffer );\n\t\t\tif ( renderTargetProperties.__webglColorRenderbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglColorRenderbuffer );\n\t\t\tif ( renderTargetProperties.__webglDepthRenderbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthRenderbuffer );\n\n\t\t}\n\n\t\tproperties.remove( renderTarget.texture );\n\t\tproperties.remove( renderTarget );\n\n\t}\n\n\t//\n\n\tlet textureUnits = 0;\n\n\tfunction resetTextureUnits() {\n\n\t\ttextureUnits = 0;\n\n\t}\n\n\tfunction allocateTextureUnit() {\n\n\t\tconst textureUnit = textureUnits;\n\n\t\tif ( textureUnit >= maxTextures ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLTextures: Trying to use ' + textureUnit + ' texture units while this GPU supports only ' + maxTextures );\n\n\t\t}\n\n\t\ttextureUnits += 1;\n\n\t\treturn textureUnit;\n\n\t}\n\n\t//\n\n\tfunction setTexture2D( texture, slot ) {\n\n\t\tconst textureProperties = properties.get( texture );\n\n\t\tif ( texture.isVideoTexture ) updateVideoTexture( texture );\n\n\t\tif ( texture.version > 0 && textureProperties.__version !== texture.version ) {\n\n\t\t\tconst image = texture.image;\n\n\t\t\tif ( image === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Texture marked for update but image is undefined' );\n\n\t\t\t} else if ( image.complete === false ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Texture marked for update but image is incomplete' );\n\n\t\t\t} else {\n\n\t\t\t\tuploadTexture( textureProperties, texture, slot );\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t}\n\n\t\tstate.activeTexture( 33984 + slot );\n\t\tstate.bindTexture( 3553, textureProperties.__webglTexture );\n\n\t}\n\n\tfunction setTexture2DArray( texture, slot ) {\n\n\t\tconst textureProperties = properties.get( texture );\n\n\t\tif ( texture.version > 0 && textureProperties.__version !== texture.version ) {\n\n\t\t\tuploadTexture( textureProperties, texture, slot );\n\t\t\treturn;\n\n\t\t}\n\n\t\tstate.activeTexture( 33984 + slot );\n\t\tstate.bindTexture( 35866, textureProperties.__webglTexture );\n\n\t}\n\n\tfunction setTexture3D( texture, slot ) {\n\n\t\tconst textureProperties = properties.get( texture );\n\n\t\tif ( texture.version > 0 && textureProperties.__version !== texture.version ) {\n\n\t\t\tuploadTexture( textureProperties, texture, slot );\n\t\t\treturn;\n\n\t\t}\n\n\t\tstate.activeTexture( 33984 + slot );\n\t\tstate.bindTexture( 32879, textureProperties.__webglTexture );\n\n\t}\n\n\tfunction setTextureCube( texture, slot ) {\n\n\t\tconst textureProperties = properties.get( texture );\n\n\t\tif ( texture.version > 0 && textureProperties.__version !== texture.version ) {\n\n\t\t\tuploadCubeTexture( textureProperties, texture, slot );\n\t\t\treturn;\n\n\t\t}\n\n\t\tstate.activeTexture( 33984 + slot );\n\t\tstate.bindTexture( 34067, textureProperties.__webglTexture );\n\n\t}\n\n\tconst wrappingToGL = {\n\t\t[ RepeatWrapping ]: 10497,\n\t\t[ ClampToEdgeWrapping ]: 33071,\n\t\t[ MirroredRepeatWrapping ]: 33648\n\t};\n\n\tconst filterToGL = {\n\t\t[ NearestFilter ]: 9728,\n\t\t[ NearestMipmapNearestFilter ]: 9984,\n\t\t[ NearestMipmapLinearFilter ]: 9986,\n\n\t\t[ LinearFilter ]: 9729,\n\t\t[ LinearMipmapNearestFilter ]: 9985,\n\t\t[ LinearMipmapLinearFilter ]: 9987\n\t};\n\n\tfunction setTextureParameters( textureType, texture, supportsMips ) {\n\n\t\tif ( supportsMips ) {\n\n\t\t\t_gl.texParameteri( textureType, 10242, wrappingToGL[ texture.wrapS ] );\n\t\t\t_gl.texParameteri( textureType, 10243, wrappingToGL[ texture.wrapT ] );\n\n\t\t\tif ( textureType === 32879 || textureType === 35866 ) {\n\n\t\t\t\t_gl.texParameteri( textureType, 32882, wrappingToGL[ texture.wrapR ] );\n\n\t\t\t}\n\n\t\t\t_gl.texParameteri( textureType, 10240, filterToGL[ texture.magFilter ] );\n\t\t\t_gl.texParameteri( textureType, 10241, filterToGL[ texture.minFilter ] );\n\n\t\t} else {\n\n\t\t\t_gl.texParameteri( textureType, 10242, 33071 );\n\t\t\t_gl.texParameteri( textureType, 10243, 33071 );\n\n\t\t\tif ( textureType === 32879 || textureType === 35866 ) {\n\n\t\t\t\t_gl.texParameteri( textureType, 32882, 33071 );\n\n\t\t\t}\n\n\t\t\tif ( texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Texture is not power of two. Texture.wrapS and Texture.wrapT should be set to THREE.ClampToEdgeWrapping.' );\n\n\t\t\t}\n\n\t\t\t_gl.texParameteri( textureType, 10240, filterFallback( texture.magFilter ) );\n\t\t\t_gl.texParameteri( textureType, 10241, filterFallback( texture.minFilter ) );\n\n\t\t\tif ( texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Texture is not power of two. Texture.minFilter should be set to THREE.NearestFilter or THREE.LinearFilter.' );\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst extension = extensions.get( 'EXT_texture_filter_anisotropic' );\n\n\t\tif ( extension ) {\n\n\t\t\tif ( texture.type === FloatType && extensions.get( 'OES_texture_float_linear' ) === null ) return;\n\t\t\tif ( texture.type === HalfFloatType && ( isWebGL2 || extensions.get( 'OES_texture_half_float_linear' ) ) === null ) return;\n\n\t\t\tif ( texture.anisotropy > 1 || properties.get( texture ).__currentAnisotropy ) {\n\n\t\t\t\t_gl.texParameterf( textureType, extension.TEXTURE_MAX_ANISOTROPY_EXT, Math.min( texture.anisotropy, capabilities.getMaxAnisotropy() ) );\n\t\t\t\tproperties.get( texture ).__currentAnisotropy = texture.anisotropy;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tfunction initTexture( textureProperties, texture ) {\n\n\t\tif ( textureProperties.__webglInit === undefined ) {\n\n\t\t\ttextureProperties.__webglInit = true;\n\n\t\t\ttexture.addEventListener( 'dispose', onTextureDispose );\n\n\t\t\ttextureProperties.__webglTexture = _gl.createTexture();\n\n\t\t\tinfo.memory.textures ++;\n\n\t\t}\n\n\t}\n\n\tfunction uploadTexture( textureProperties, texture, slot ) {\n\n\t\tlet textureType = 3553;\n\n\t\tif ( texture.isDataTexture2DArray ) textureType = 35866;\n\t\tif ( texture.isDataTexture3D ) textureType = 32879;\n\n\t\tinitTexture( textureProperties, texture );\n\n\t\tstate.activeTexture( 33984 + slot );\n\t\tstate.bindTexture( textureType, textureProperties.__webglTexture );\n\n\t\t_gl.pixelStorei( 37440, texture.flipY );\n\t\t_gl.pixelStorei( 37441, texture.premultiplyAlpha );\n\t\t_gl.pixelStorei( 3317, texture.unpackAlignment );\n\n\t\tconst needsPowerOfTwo = textureNeedsPowerOfTwo( texture ) && isPowerOfTwo( texture.image ) === false;\n\t\tconst image = resizeImage( texture.image, needsPowerOfTwo, false, maxTextureSize );\n\n\t\tconst supportsMips = isPowerOfTwo( image ) || isWebGL2,\n\t\t\tglFormat = utils.convert( texture.format );\n\n\t\tlet glType = utils.convert( texture.type ),\n\t\t\tglInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType );\n\n\t\tsetTextureParameters( textureType, texture, supportsMips );\n\n\t\tlet mipmap;\n\t\tconst mipmaps = texture.mipmaps;\n\n\t\tif ( texture.isDepthTexture ) {\n\n\t\t\t// populate depth texture with dummy data\n\n\t\t\tglInternalFormat = 6402;\n\n\t\t\tif ( isWebGL2 ) {\n\n\t\t\t\tif ( texture.type === FloatType ) {\n\n\t\t\t\t\tglInternalFormat = 36012;\n\n\t\t\t\t} else if ( texture.type === UnsignedIntType ) {\n\n\t\t\t\t\tglInternalFormat = 33190;\n\n\t\t\t\t} else if ( texture.type === UnsignedInt248Type ) {\n\n\t\t\t\t\tglInternalFormat = 35056;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tglInternalFormat = 33189; // WebGL2 requires sized internalformat for glTexImage2D\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tif ( texture.type === FloatType ) {\n\n\t\t\t\t\tconsole.error( 'WebGLRenderer: Floating point depth texture requires WebGL2.' );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// validation checks for WebGL 1\n\n\t\t\tif ( texture.format === DepthFormat && glInternalFormat === 6402 ) {\n\n\t\t\t\t// The error INVALID_OPERATION is generated by texImage2D if format and internalformat are\n\t\t\t\t// DEPTH_COMPONENT and type is not UNSIGNED_SHORT or UNSIGNED_INT\n\t\t\t\t// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)\n\t\t\t\tif ( texture.type !== UnsignedShortType && texture.type !== UnsignedIntType ) {\n\n\t\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Use UnsignedShortType or UnsignedIntType for DepthFormat DepthTexture.' );\n\n\t\t\t\t\ttexture.type = UnsignedShortType;\n\t\t\t\t\tglType = utils.convert( texture.type );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( texture.format === DepthStencilFormat && glInternalFormat === 6402 ) {\n\n\t\t\t\t// Depth stencil textures need the DEPTH_STENCIL internal format\n\t\t\t\t// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)\n\t\t\t\tglInternalFormat = 34041;\n\n\t\t\t\t// The error INVALID_OPERATION is generated by texImage2D if format and internalformat are\n\t\t\t\t// DEPTH_STENCIL and type is not UNSIGNED_INT_24_8_WEBGL.\n\t\t\t\t// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)\n\t\t\t\tif ( texture.type !== UnsignedInt248Type ) {\n\n\t\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Use UnsignedInt248Type for DepthStencilFormat DepthTexture.' );\n\n\t\t\t\t\ttexture.type = UnsignedInt248Type;\n\t\t\t\t\tglType = utils.convert( texture.type );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t//\n\n\t\t\tstate.texImage2D( 3553, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, null );\n\n\t\t} else if ( texture.isDataTexture ) {\n\n\t\t\t// use manually created mipmaps if available\n\t\t\t// if there are no manual mipmaps\n\t\t\t// set 0 level mipmap and then use GL to generate other mipmap levels\n\n\t\t\tif ( mipmaps.length > 0 && supportsMips ) {\n\n\t\t\t\tfor ( let i = 0, il = mipmaps.length; i < il; i ++ ) {\n\n\t\t\t\t\tmipmap = mipmaps[ i ];\n\t\t\t\t\tstate.texImage2D( 3553, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );\n\n\t\t\t\t}\n\n\t\t\t\ttexture.generateMipmaps = false;\n\t\t\t\ttextureProperties.__maxMipLevel = mipmaps.length - 1;\n\n\t\t\t} else {\n\n\t\t\t\tstate.texImage2D( 3553, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, image.data );\n\t\t\t\ttextureProperties.__maxMipLevel = 0;\n\n\t\t\t}\n\n\t\t} else if ( texture.isCompressedTexture ) {\n\n\t\t\tfor ( let i = 0, il = mipmaps.length; i < il; i ++ ) {\n\n\t\t\t\tmipmap = mipmaps[ i ];\n\n\t\t\t\tif ( texture.format !== RGBAFormat && texture.format !== RGBFormat ) {\n\n\t\t\t\t\tif ( glFormat !== null ) {\n\n\t\t\t\t\t\tstate.compressedTexImage2D( 3553, i, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .uploadTexture()' );\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\tstate.texImage2D( 3553, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\ttextureProperties.__maxMipLevel = mipmaps.length - 1;\n\n\t\t} else if ( texture.isDataTexture2DArray ) {\n\n\t\t\tstate.texImage3D( 35866, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data );\n\t\t\ttextureProperties.__maxMipLevel = 0;\n\n\t\t} else if ( texture.isDataTexture3D ) {\n\n\t\t\tstate.texImage3D( 32879, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data );\n\t\t\ttextureProperties.__maxMipLevel = 0;\n\n\t\t} else {\n\n\t\t\t// regular Texture (image, video, canvas)\n\n\t\t\t// use manually created mipmaps if available\n\t\t\t// if there are no manual mipmaps\n\t\t\t// set 0 level mipmap and then use GL to generate other mipmap levels\n\n\t\t\tif ( mipmaps.length > 0 && supportsMips ) {\n\n\t\t\t\tfor ( let i = 0, il = mipmaps.length; i < il; i ++ ) {\n\n\t\t\t\t\tmipmap = mipmaps[ i ];\n\t\t\t\t\tstate.texImage2D( 3553, i, glInternalFormat, glFormat, glType, mipmap );\n\n\t\t\t\t}\n\n\t\t\t\ttexture.generateMipmaps = false;\n\t\t\t\ttextureProperties.__maxMipLevel = mipmaps.length - 1;\n\n\t\t\t} else {\n\n\t\t\t\tstate.texImage2D( 3553, 0, glInternalFormat, glFormat, glType, image );\n\t\t\t\ttextureProperties.__maxMipLevel = 0;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {\n\n\t\t\tgenerateMipmap( textureType, texture, image.width, image.height );\n\n\t\t}\n\n\t\ttextureProperties.__version = texture.version;\n\n\t\tif ( texture.onUpdate ) texture.onUpdate( texture );\n\n\t}\n\n\tfunction uploadCubeTexture( textureProperties, texture, slot ) {\n\n\t\tif ( texture.image.length !== 6 ) return;\n\n\t\tinitTexture( textureProperties, texture );\n\n\t\tstate.activeTexture( 33984 + slot );\n\t\tstate.bindTexture( 34067, textureProperties.__webglTexture );\n\n\t\t_gl.pixelStorei( 37440, texture.flipY );\n\n\t\tconst isCompressed = ( texture && ( texture.isCompressedTexture || texture.image[ 0 ].isCompressedTexture ) );\n\t\tconst isDataTexture = ( texture.image[ 0 ] && texture.image[ 0 ].isDataTexture );\n\n\t\tconst cubeImage = [];\n\n\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\tif ( ! isCompressed && ! isDataTexture ) {\n\n\t\t\t\tcubeImage[ i ] = resizeImage( texture.image[ i ], false, true, maxCubemapSize );\n\n\t\t\t} else {\n\n\t\t\t\tcubeImage[ i ] = isDataTexture ? texture.image[ i ].image : texture.image[ i ];\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst image = cubeImage[ 0 ],\n\t\t\tsupportsMips = isPowerOfTwo( image ) || isWebGL2,\n\t\t\tglFormat = utils.convert( texture.format ),\n\t\t\tglType = utils.convert( texture.type ),\n\t\t\tglInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType );\n\n\t\tsetTextureParameters( 34067, texture, supportsMips );\n\n\t\tlet mipmaps;\n\n\t\tif ( isCompressed ) {\n\n\t\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\t\tmipmaps = cubeImage[ i ].mipmaps;\n\n\t\t\t\tfor ( let j = 0; j < mipmaps.length; j ++ ) {\n\n\t\t\t\t\tconst mipmap = mipmaps[ j ];\n\n\t\t\t\t\tif ( texture.format !== RGBAFormat && texture.format !== RGBFormat ) {\n\n\t\t\t\t\t\tif ( glFormat !== null ) {\n\n\t\t\t\t\t\t\tstate.compressedTexImage2D( 34069 + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data );\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .setTextureCube()' );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tstate.texImage2D( 34069 + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\ttextureProperties.__maxMipLevel = mipmaps.length - 1;\n\n\t\t} else {\n\n\t\t\tmipmaps = texture.mipmaps;\n\n\t\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\t\tif ( isDataTexture ) {\n\n\t\t\t\t\tstate.texImage2D( 34069 + i, 0, glInternalFormat, cubeImage[ i ].width, cubeImage[ i ].height, 0, glFormat, glType, cubeImage[ i ].data );\n\n\t\t\t\t\tfor ( let j = 0; j < mipmaps.length; j ++ ) {\n\n\t\t\t\t\t\tconst mipmap = mipmaps[ j ];\n\t\t\t\t\t\tconst mipmapImage = mipmap.image[ i ].image;\n\n\t\t\t\t\t\tstate.texImage2D( 34069 + i, j + 1, glInternalFormat, mipmapImage.width, mipmapImage.height, 0, glFormat, glType, mipmapImage.data );\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\tstate.texImage2D( 34069 + i, 0, glInternalFormat, glFormat, glType, cubeImage[ i ] );\n\n\t\t\t\t\tfor ( let j = 0; j < mipmaps.length; j ++ ) {\n\n\t\t\t\t\t\tconst mipmap = mipmaps[ j ];\n\n\t\t\t\t\t\tstate.texImage2D( 34069 + i, j + 1, glInternalFormat, glFormat, glType, mipmap.image[ i ] );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\ttextureProperties.__maxMipLevel = mipmaps.length;\n\n\t\t}\n\n\t\tif ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {\n\n\t\t\t// We assume images for cube map have the same size.\n\t\t\tgenerateMipmap( 34067, texture, image.width, image.height );\n\n\t\t}\n\n\t\ttextureProperties.__version = texture.version;\n\n\t\tif ( texture.onUpdate ) texture.onUpdate( texture );\n\n\t}\n\n\t// Render targets\n\n\t// Setup storage for target texture and bind it to correct framebuffer\n\tfunction setupFrameBufferTexture( framebuffer, renderTarget, attachment, textureTarget ) {\n\n\t\tconst glFormat = utils.convert( renderTarget.texture.format );\n\t\tconst glType = utils.convert( renderTarget.texture.type );\n\t\tconst glInternalFormat = getInternalFormat( renderTarget.texture.internalFormat, glFormat, glType );\n\t\tstate.texImage2D( textureTarget, 0, glInternalFormat, renderTarget.width, renderTarget.height, 0, glFormat, glType, null );\n\t\t_gl.bindFramebuffer( 36160, framebuffer );\n\t\t_gl.framebufferTexture2D( 36160, attachment, textureTarget, properties.get( renderTarget.texture ).__webglTexture, 0 );\n\t\t_gl.bindFramebuffer( 36160, null );\n\n\t}\n\n\t// Setup storage for internal depth/stencil buffers and bind to correct framebuffer\n\tfunction setupRenderBufferStorage( renderbuffer, renderTarget, isMultisample ) {\n\n\t\t_gl.bindRenderbuffer( 36161, renderbuffer );\n\n\t\tif ( renderTarget.depthBuffer && ! renderTarget.stencilBuffer ) {\n\n\t\t\tlet glInternalFormat = 33189;\n\n\t\t\tif ( isMultisample ) {\n\n\t\t\t\tconst depthTexture = renderTarget.depthTexture;\n\n\t\t\t\tif ( depthTexture && depthTexture.isDepthTexture ) {\n\n\t\t\t\t\tif ( depthTexture.type === FloatType ) {\n\n\t\t\t\t\t\tglInternalFormat = 36012;\n\n\t\t\t\t\t} else if ( depthTexture.type === UnsignedIntType ) {\n\n\t\t\t\t\t\tglInternalFormat = 33190;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tconst samples = getRenderTargetSamples( renderTarget );\n\n\t\t\t\t_gl.renderbufferStorageMultisample( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );\n\n\t\t\t} else {\n\n\t\t\t\t_gl.renderbufferStorage( 36161, glInternalFormat, renderTarget.width, renderTarget.height );\n\n\t\t\t}\n\n\t\t\t_gl.framebufferRenderbuffer( 36160, 36096, 36161, renderbuffer );\n\n\t\t} else if ( renderTarget.depthBuffer && renderTarget.stencilBuffer ) {\n\n\t\t\tif ( isMultisample ) {\n\n\t\t\t\tconst samples = getRenderTargetSamples( renderTarget );\n\n\t\t\t\t_gl.renderbufferStorageMultisample( 36161, samples, 35056, renderTarget.width, renderTarget.height );\n\n\t\t\t} else {\n\n\t\t\t\t_gl.renderbufferStorage( 36161, 34041, renderTarget.width, renderTarget.height );\n\n\t\t\t}\n\n\n\t\t\t_gl.framebufferRenderbuffer( 36160, 33306, 36161, renderbuffer );\n\n\t\t} else {\n\n\t\t\tconst glFormat = utils.convert( renderTarget.texture.format );\n\t\t\tconst glType = utils.convert( renderTarget.texture.type );\n\t\t\tconst glInternalFormat = getInternalFormat( renderTarget.texture.internalFormat, glFormat, glType );\n\n\t\t\tif ( isMultisample ) {\n\n\t\t\t\tconst samples = getRenderTargetSamples( renderTarget );\n\n\t\t\t\t_gl.renderbufferStorageMultisample( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );\n\n\t\t\t} else {\n\n\t\t\t\t_gl.renderbufferStorage( 36161, glInternalFormat, renderTarget.width, renderTarget.height );\n\n\t\t\t}\n\n\t\t}\n\n\t\t_gl.bindRenderbuffer( 36161, null );\n\n\t}\n\n\t// Setup resources for a Depth Texture for a FBO (needs an extension)\n\tfunction setupDepthTexture( framebuffer, renderTarget ) {\n\n\t\tconst isCube = ( renderTarget && renderTarget.isWebGLCubeRenderTarget );\n\t\tif ( isCube ) throw new Error( 'Depth Texture with cube render targets is not supported' );\n\n\t\t_gl.bindFramebuffer( 36160, framebuffer );\n\n\t\tif ( ! ( renderTarget.depthTexture && renderTarget.depthTexture.isDepthTexture ) ) {\n\n\t\t\tthrow new Error( 'renderTarget.depthTexture must be an instance of THREE.DepthTexture' );\n\n\t\t}\n\n\t\t// upload an empty depth texture with framebuffer size\n\t\tif ( ! properties.get( renderTarget.depthTexture ).__webglTexture ||\n\t\t\t\trenderTarget.depthTexture.image.width !== renderTarget.width ||\n\t\t\t\trenderTarget.depthTexture.image.height !== renderTarget.height ) {\n\n\t\t\trenderTarget.depthTexture.image.width = renderTarget.width;\n\t\t\trenderTarget.depthTexture.image.height = renderTarget.height;\n\t\t\trenderTarget.depthTexture.needsUpdate = true;\n\n\t\t}\n\n\t\tsetTexture2D( renderTarget.depthTexture, 0 );\n\n\t\tconst webglDepthTexture = properties.get( renderTarget.depthTexture ).__webglTexture;\n\n\t\tif ( renderTarget.depthTexture.format === DepthFormat ) {\n\n\t\t\t_gl.framebufferTexture2D( 36160, 36096, 3553, webglDepthTexture, 0 );\n\n\t\t} else if ( renderTarget.depthTexture.format === DepthStencilFormat ) {\n\n\t\t\t_gl.framebufferTexture2D( 36160, 33306, 3553, webglDepthTexture, 0 );\n\n\t\t} else {\n\n\t\t\tthrow new Error( 'Unknown depthTexture format' );\n\n\t\t}\n\n\t}\n\n\t// Setup GL resources for a non-texture depth buffer\n\tfunction setupDepthRenderbuffer( renderTarget ) {\n\n\t\tconst renderTargetProperties = properties.get( renderTarget );\n\n\t\tconst isCube = ( renderTarget.isWebGLCubeRenderTarget === true );\n\n\t\tif ( renderTarget.depthTexture ) {\n\n\t\t\tif ( isCube ) throw new Error( 'target.depthTexture not supported in Cube render targets' );\n\n\t\t\tsetupDepthTexture( renderTargetProperties.__webglFramebuffer, renderTarget );\n\n\t\t} else {\n\n\t\t\tif ( isCube ) {\n\n\t\t\t\trenderTargetProperties.__webglDepthbuffer = [];\n\n\t\t\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\t\t\t_gl.bindFramebuffer( 36160, renderTargetProperties.__webglFramebuffer[ i ] );\n\t\t\t\t\trenderTargetProperties.__webglDepthbuffer[ i ] = _gl.createRenderbuffer();\n\t\t\t\t\tsetupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer[ i ], renderTarget, false );\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\t_gl.bindFramebuffer( 36160, renderTargetProperties.__webglFramebuffer );\n\t\t\t\trenderTargetProperties.__webglDepthbuffer = _gl.createRenderbuffer();\n\t\t\t\tsetupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer, renderTarget, false );\n\n\t\t\t}\n\n\t\t}\n\n\t\t_gl.bindFramebuffer( 36160, null );\n\n\t}\n\n\t// Set up GL resources for the render target\n\tfunction setupRenderTarget( renderTarget ) {\n\n\t\tconst renderTargetProperties = properties.get( renderTarget );\n\t\tconst textureProperties = properties.get( renderTarget.texture );\n\n\t\trenderTarget.addEventListener( 'dispose', onRenderTargetDispose );\n\n\t\ttextureProperties.__webglTexture = _gl.createTexture();\n\n\t\tinfo.memory.textures ++;\n\n\t\tconst isCube = ( renderTarget.isWebGLCubeRenderTarget === true );\n\t\tconst isMultisample = ( renderTarget.isWebGLMultisampleRenderTarget === true );\n\t\tconst supportsMips = isPowerOfTwo( renderTarget ) || isWebGL2;\n\n\t\t// Handles WebGL2 RGBFormat fallback - #18858\n\n\t\tif ( isWebGL2 && renderTarget.texture.format === RGBFormat && ( renderTarget.texture.type === FloatType || renderTarget.texture.type === HalfFloatType ) ) {\n\n\t\t\trenderTarget.texture.format = RGBAFormat;\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: Rendering to textures with RGB format is not supported. Using RGBA format instead.' );\n\n\t\t}\n\n\t\t// Setup framebuffer\n\n\t\tif ( isCube ) {\n\n\t\t\trenderTargetProperties.__webglFramebuffer = [];\n\n\t\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\t\trenderTargetProperties.__webglFramebuffer[ i ] = _gl.createFramebuffer();\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\trenderTargetProperties.__webglFramebuffer = _gl.createFramebuffer();\n\n\t\t\tif ( isMultisample ) {\n\n\t\t\t\tif ( isWebGL2 ) {\n\n\t\t\t\t\trenderTargetProperties.__webglMultisampledFramebuffer = _gl.createFramebuffer();\n\t\t\t\t\trenderTargetProperties.__webglColorRenderbuffer = _gl.createRenderbuffer();\n\n\t\t\t\t\t_gl.bindRenderbuffer( 36161, renderTargetProperties.__webglColorRenderbuffer );\n\n\t\t\t\t\tconst glFormat = utils.convert( renderTarget.texture.format );\n\t\t\t\t\tconst glType = utils.convert( renderTarget.texture.type );\n\t\t\t\t\tconst glInternalFormat = getInternalFormat( renderTarget.texture.internalFormat, glFormat, glType );\n\t\t\t\t\tconst samples = getRenderTargetSamples( renderTarget );\n\t\t\t\t\t_gl.renderbufferStorageMultisample( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );\n\n\t\t\t\t\t_gl.bindFramebuffer( 36160, renderTargetProperties.__webglMultisampledFramebuffer );\n\t\t\t\t\t_gl.framebufferRenderbuffer( 36160, 36064, 36161, renderTargetProperties.__webglColorRenderbuffer );\n\t\t\t\t\t_gl.bindRenderbuffer( 36161, null );\n\n\t\t\t\t\tif ( renderTarget.depthBuffer ) {\n\n\t\t\t\t\t\trenderTargetProperties.__webglDepthRenderbuffer = _gl.createRenderbuffer();\n\t\t\t\t\t\tsetupRenderBufferStorage( renderTargetProperties.__webglDepthRenderbuffer, renderTarget, true );\n\n\t\t\t\t\t}\n\n\t\t\t\t\t_gl.bindFramebuffer( 36160, null );\n\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: WebGLMultisampleRenderTarget can only be used with WebGL2.' );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\t// Setup color buffer\n\n\t\tif ( isCube ) {\n\n\t\t\tstate.bindTexture( 34067, textureProperties.__webglTexture );\n\t\t\tsetTextureParameters( 34067, renderTarget.texture, supportsMips );\n\n\t\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\t\tsetupFrameBufferTexture( renderTargetProperties.__webglFramebuffer[ i ], renderTarget, 36064, 34069 + i );\n\n\t\t\t}\n\n\t\t\tif ( textureNeedsGenerateMipmaps( renderTarget.texture, supportsMips ) ) {\n\n\t\t\t\tgenerateMipmap( 34067, renderTarget.texture, renderTarget.width, renderTarget.height );\n\n\t\t\t}\n\n\t\t\tstate.bindTexture( 34067, null );\n\n\t\t} else {\n\n\t\t\tstate.bindTexture( 3553, textureProperties.__webglTexture );\n\t\t\tsetTextureParameters( 3553, renderTarget.texture, supportsMips );\n\t\t\tsetupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, 36064, 3553 );\n\n\t\t\tif ( textureNeedsGenerateMipmaps( renderTarget.texture, supportsMips ) ) {\n\n\t\t\t\tgenerateMipmap( 3553, renderTarget.texture, renderTarget.width, renderTarget.height );\n\n\t\t\t}\n\n\t\t\tstate.bindTexture( 3553, null );\n\n\t\t}\n\n\t\t// Setup depth and stencil buffers\n\n\t\tif ( renderTarget.depthBuffer ) {\n\n\t\t\tsetupDepthRenderbuffer( renderTarget );\n\n\t\t}\n\n\t}\n\n\tfunction updateRenderTargetMipmap( renderTarget ) {\n\n\t\tconst texture = renderTarget.texture;\n\t\tconst supportsMips = isPowerOfTwo( renderTarget ) || isWebGL2;\n\n\t\tif ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {\n\n\t\t\tconst target = renderTarget.isWebGLCubeRenderTarget ? 34067 : 3553;\n\t\t\tconst webglTexture = properties.get( texture ).__webglTexture;\n\n\t\t\tstate.bindTexture( target, webglTexture );\n\t\t\tgenerateMipmap( target, texture, renderTarget.width, renderTarget.height );\n\t\t\tstate.bindTexture( target, null );\n\n\t\t}\n\n\t}\n\n\tfunction updateMultisampleRenderTarget( renderTarget ) {\n\n\t\tif ( renderTarget.isWebGLMultisampleRenderTarget ) {\n\n\t\t\tif ( isWebGL2 ) {\n\n\t\t\t\tconst renderTargetProperties = properties.get( renderTarget );\n\n\t\t\t\t_gl.bindFramebuffer( 36008, renderTargetProperties.__webglMultisampledFramebuffer );\n\t\t\t\t_gl.bindFramebuffer( 36009, renderTargetProperties.__webglFramebuffer );\n\n\t\t\t\tconst width = renderTarget.width;\n\t\t\t\tconst height = renderTarget.height;\n\t\t\t\tlet mask = 16384;\n\n\t\t\t\tif ( renderTarget.depthBuffer ) mask |= 256;\n\t\t\t\tif ( renderTarget.stencilBuffer ) mask |= 1024;\n\n\t\t\t\t_gl.blitFramebuffer( 0, 0, width, height, 0, 0, width, height, mask, 9728 );\n\n\t\t\t\t_gl.bindFramebuffer( 36160, renderTargetProperties.__webglMultisampledFramebuffer ); // see #18905\n\n\t\t\t} else {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: WebGLMultisampleRenderTarget can only be used with WebGL2.' );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tfunction getRenderTargetSamples( renderTarget ) {\n\n\t\treturn ( isWebGL2 && renderTarget.isWebGLMultisampleRenderTarget ) ?\n\t\t\tMath.min( maxSamples, renderTarget.samples ) : 0;\n\n\t}\n\n\tfunction updateVideoTexture( texture ) {\n\n\t\tconst frame = info.render.frame;\n\n\t\t// Check the last frame we updated the VideoTexture\n\n\t\tif ( _videoTextures.get( texture ) !== frame ) {\n\n\t\t\t_videoTextures.set( texture, frame );\n\t\t\ttexture.update();\n\n\t\t}\n\n\t}\n\n\t// backwards compatibility\n\n\tlet warnedTexture2D = false;\n\tlet warnedTextureCube = false;\n\n\tfunction safeSetTexture2D( texture, slot ) {\n\n\t\tif ( texture && texture.isWebGLRenderTarget ) {\n\n\t\t\tif ( warnedTexture2D === false ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLTextures.safeSetTexture2D: don\\'t use render targets as textures. Use their .texture property instead.' );\n\t\t\t\twarnedTexture2D = true;\n\n\t\t\t}\n\n\t\t\ttexture = texture.texture;\n\n\t\t}\n\n\t\tsetTexture2D( texture, slot );\n\n\t}\n\n\tfunction safeSetTextureCube( texture, slot ) {\n\n\t\tif ( texture && texture.isWebGLCubeRenderTarget ) {\n\n\t\t\tif ( warnedTextureCube === false ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLTextures.safeSetTextureCube: don\\'t use cube render targets as textures. Use their .texture property instead.' );\n\t\t\t\twarnedTextureCube = true;\n\n\t\t\t}\n\n\t\t\ttexture = texture.texture;\n\n\t\t}\n\n\n\t\tsetTextureCube( texture, slot );\n\n\t}\n\n\t//\n\n\tthis.allocateTextureUnit = allocateTextureUnit;\n\tthis.resetTextureUnits = resetTextureUnits;\n\n\tthis.setTexture2D = setTexture2D;\n\tthis.setTexture2DArray = setTexture2DArray;\n\tthis.setTexture3D = setTexture3D;\n\tthis.setTextureCube = setTextureCube;\n\tthis.setupRenderTarget = setupRenderTarget;\n\tthis.updateRenderTargetMipmap = updateRenderTargetMipmap;\n\tthis.updateMultisampleRenderTarget = updateMultisampleRenderTarget;\n\n\tthis.safeSetTexture2D = safeSetTexture2D;\n\tthis.safeSetTextureCube = safeSetTextureCube;\n\n}\n\nfunction WebGLUtils( gl, extensions, capabilities ) {\n\n\tconst isWebGL2 = capabilities.isWebGL2;\n\n\tfunction convert( p ) {\n\n\t\tlet extension;\n\n\t\tif ( p === UnsignedByteType ) return 5121;\n\t\tif ( p === UnsignedShort4444Type ) return 32819;\n\t\tif ( p === UnsignedShort5551Type ) return 32820;\n\t\tif ( p === UnsignedShort565Type ) return 33635;\n\n\t\tif ( p === ByteType ) return 5120;\n\t\tif ( p === ShortType ) return 5122;\n\t\tif ( p === UnsignedShortType ) return 5123;\n\t\tif ( p === IntType ) return 5124;\n\t\tif ( p === UnsignedIntType ) return 5125;\n\t\tif ( p === FloatType ) return 5126;\n\n\t\tif ( p === HalfFloatType ) {\n\n\t\t\tif ( isWebGL2 ) return 5131;\n\n\t\t\textension = extensions.get( 'OES_texture_half_float' );\n\n\t\t\tif ( extension !== null ) {\n\n\t\t\t\treturn extension.HALF_FLOAT_OES;\n\n\t\t\t} else {\n\n\t\t\t\treturn null;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( p === AlphaFormat ) return 6406;\n\t\tif ( p === RGBFormat ) return 6407;\n\t\tif ( p === RGBAFormat ) return 6408;\n\t\tif ( p === LuminanceFormat ) return 6409;\n\t\tif ( p === LuminanceAlphaFormat ) return 6410;\n\t\tif ( p === DepthFormat ) return 6402;\n\t\tif ( p === DepthStencilFormat ) return 34041;\n\t\tif ( p === RedFormat ) return 6403;\n\n\t\t// WebGL2 formats.\n\n\t\tif ( p === RedIntegerFormat ) return 36244;\n\t\tif ( p === RGFormat ) return 33319;\n\t\tif ( p === RGIntegerFormat ) return 33320;\n\t\tif ( p === RGBIntegerFormat ) return 36248;\n\t\tif ( p === RGBAIntegerFormat ) return 36249;\n\n\t\tif ( p === RGB_S3TC_DXT1_Format || p === RGBA_S3TC_DXT1_Format ||\n\t\t\tp === RGBA_S3TC_DXT3_Format || p === RGBA_S3TC_DXT5_Format ) {\n\n\t\t\textension = extensions.get( 'WEBGL_compressed_texture_s3tc' );\n\n\t\t\tif ( extension !== null ) {\n\n\t\t\t\tif ( p === RGB_S3TC_DXT1_Format ) return extension.COMPRESSED_RGB_S3TC_DXT1_EXT;\n\t\t\t\tif ( p === RGBA_S3TC_DXT1_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT1_EXT;\n\t\t\t\tif ( p === RGBA_S3TC_DXT3_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT3_EXT;\n\t\t\t\tif ( p === RGBA_S3TC_DXT5_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT5_EXT;\n\n\t\t\t} else {\n\n\t\t\t\treturn null;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( p === RGB_PVRTC_4BPPV1_Format || p === RGB_PVRTC_2BPPV1_Format ||\n\t\t\tp === RGBA_PVRTC_4BPPV1_Format || p === RGBA_PVRTC_2BPPV1_Format ) {\n\n\t\t\textension = extensions.get( 'WEBGL_compressed_texture_pvrtc' );\n\n\t\t\tif ( extension !== null ) {\n\n\t\t\t\tif ( p === RGB_PVRTC_4BPPV1_Format ) return extension.COMPRESSED_RGB_PVRTC_4BPPV1_IMG;\n\t\t\t\tif ( p === RGB_PVRTC_2BPPV1_Format ) return extension.COMPRESSED_RGB_PVRTC_2BPPV1_IMG;\n\t\t\t\tif ( p === RGBA_PVRTC_4BPPV1_Format ) return extension.COMPRESSED_RGBA_PVRTC_4BPPV1_IMG;\n\t\t\t\tif ( p === RGBA_PVRTC_2BPPV1_Format ) return extension.COMPRESSED_RGBA_PVRTC_2BPPV1_IMG;\n\n\t\t\t} else {\n\n\t\t\t\treturn null;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( p === RGB_ETC1_Format ) {\n\n\t\t\textension = extensions.get( 'WEBGL_compressed_texture_etc1' );\n\n\t\t\tif ( extension !== null ) {\n\n\t\t\t\treturn extension.COMPRESSED_RGB_ETC1_WEBGL;\n\n\t\t\t} else {\n\n\t\t\t\treturn null;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( p === RGB_ETC2_Format || p === RGBA_ETC2_EAC_Format ) {\n\n\t\t\textension = extensions.get( 'WEBGL_compressed_texture_etc' );\n\n\t\t\tif ( extension !== null ) {\n\n\t\t\t\tif ( p === RGB_ETC2_Format ) return extension.COMPRESSED_RGB8_ETC2;\n\t\t\t\tif ( p === RGBA_ETC2_EAC_Format ) return extension.COMPRESSED_RGBA8_ETC2_EAC;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( p === RGBA_ASTC_4x4_Format || p === RGBA_ASTC_5x4_Format || p === RGBA_ASTC_5x5_Format ||\n\t\t\tp === RGBA_ASTC_6x5_Format || p === RGBA_ASTC_6x6_Format || p === RGBA_ASTC_8x5_Format ||\n\t\t\tp === RGBA_ASTC_8x6_Format || p === RGBA_ASTC_8x8_Format || p === RGBA_ASTC_10x5_Format ||\n\t\t\tp === RGBA_ASTC_10x6_Format || p === RGBA_ASTC_10x8_Format || p === RGBA_ASTC_10x10_Format ||\n\t\t\tp === RGBA_ASTC_12x10_Format || p === RGBA_ASTC_12x12_Format ||\n\t\t\tp === SRGB8_ALPHA8_ASTC_4x4_Format || p === SRGB8_ALPHA8_ASTC_5x4_Format || p === SRGB8_ALPHA8_ASTC_5x5_Format ||\n\t\t\tp === SRGB8_ALPHA8_ASTC_6x5_Format || p === SRGB8_ALPHA8_ASTC_6x6_Format || p === SRGB8_ALPHA8_ASTC_8x5_Format ||\n\t\t\tp === SRGB8_ALPHA8_ASTC_8x6_Format || p === SRGB8_ALPHA8_ASTC_8x8_Format || p === SRGB8_ALPHA8_ASTC_10x5_Format ||\n\t\t\tp === SRGB8_ALPHA8_ASTC_10x6_Format || p === SRGB8_ALPHA8_ASTC_10x8_Format || p === SRGB8_ALPHA8_ASTC_10x10_Format ||\n\t\t\tp === SRGB8_ALPHA8_ASTC_12x10_Format || p === SRGB8_ALPHA8_ASTC_12x12_Format ) {\n\n\t\t\textension = extensions.get( 'WEBGL_compressed_texture_astc' );\n\n\t\t\tif ( extension !== null ) {\n\n\t\t\t\t// TODO Complete?\n\n\t\t\t\treturn p;\n\n\t\t\t} else {\n\n\t\t\t\treturn null;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( p === RGBA_BPTC_Format ) {\n\n\t\t\textension = extensions.get( 'EXT_texture_compression_bptc' );\n\n\t\t\tif ( extension !== null ) {\n\n\t\t\t\t// TODO Complete?\n\n\t\t\t\treturn p;\n\n\t\t\t} else {\n\n\t\t\t\treturn null;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( p === UnsignedInt248Type ) {\n\n\t\t\tif ( isWebGL2 ) return 34042;\n\n\t\t\textension = extensions.get( 'WEBGL_depth_texture' );\n\n\t\t\tif ( extension !== null ) {\n\n\t\t\t\treturn extension.UNSIGNED_INT_24_8_WEBGL;\n\n\t\t\t} else {\n\n\t\t\t\treturn null;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\treturn { convert: convert };\n\n}\n\nfunction ArrayCamera( array = [] ) {\n\n\tPerspectiveCamera.call( this );\n\n\tthis.cameras = array;\n\n}\n\nArrayCamera.prototype = Object.assign( Object.create( PerspectiveCamera.prototype ), {\n\n\tconstructor: ArrayCamera,\n\n\tisArrayCamera: true\n\n} );\n\nfunction Group() {\n\n\tObject3D.call( this );\n\n\tthis.type = 'Group';\n\n}\n\nGroup.prototype = Object.assign( Object.create( Object3D.prototype ), {\n\n\tconstructor: Group,\n\n\tisGroup: true\n\n} );\n\nfunction WebXRController() {\n\n\tthis._targetRay = null;\n\tthis._grip = null;\n\tthis._hand = null;\n\n}\n\nObject.assign( WebXRController.prototype, {\n\n\tconstructor: WebXRController,\n\n\tgetHandSpace: function () {\n\n\t\tif ( this._hand === null ) {\n\n\t\t\tthis._hand = new Group();\n\t\t\tthis._hand.matrixAutoUpdate = false;\n\t\t\tthis._hand.visible = false;\n\n\t\t\tthis._hand.joints = [];\n\t\t\tthis._hand.inputState = { pinching: false };\n\n\t\t\tif ( window.XRHand ) {\n\n\t\t\t\tfor ( let i = 0; i <= window.XRHand.LITTLE_PHALANX_TIP; i ++ ) {\n\n\t\t\t\t\t// The transform of this joint will be updated with the joint pose on each frame\n\t\t\t\t\tconst joint = new Group();\n\t\t\t\t\tjoint.matrixAutoUpdate = false;\n\t\t\t\t\tjoint.visible = false;\n\t\t\t\t\tthis._hand.joints.push( joint );\n\t\t\t\t\t// ??\n\t\t\t\t\tthis._hand.add( joint );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn this._hand;\n\n\t},\n\n\tgetTargetRaySpace: function () {\n\n\t\tif ( this._targetRay === null ) {\n\n\t\t\tthis._targetRay = new Group();\n\t\t\tthis._targetRay.matrixAutoUpdate = false;\n\t\t\tthis._targetRay.visible = false;\n\n\t\t}\n\n\t\treturn this._targetRay;\n\n\t},\n\n\tgetGripSpace: function () {\n\n\t\tif ( this._grip === null ) {\n\n\t\t\tthis._grip = new Group();\n\t\t\tthis._grip.matrixAutoUpdate = false;\n\t\t\tthis._grip.visible = false;\n\n\t\t}\n\n\t\treturn this._grip;\n\n\t},\n\n\tdispatchEvent: function ( event ) {\n\n\t\tif ( this._targetRay !== null ) {\n\n\t\t\tthis._targetRay.dispatchEvent( event );\n\n\t\t}\n\n\t\tif ( this._grip !== null ) {\n\n\t\t\tthis._grip.dispatchEvent( event );\n\n\t\t}\n\n\t\tif ( this._hand !== null ) {\n\n\t\t\tthis._hand.dispatchEvent( event );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tdisconnect: function ( inputSource ) {\n\n\t\tthis.dispatchEvent( { type: 'disconnected', data: inputSource } );\n\n\t\tif ( this._targetRay !== null ) {\n\n\t\t\tthis._targetRay.visible = false;\n\n\t\t}\n\n\t\tif ( this._grip !== null ) {\n\n\t\t\tthis._grip.visible = false;\n\n\t\t}\n\n\t\tif ( this._hand !== null ) {\n\n\t\t\tthis._hand.visible = false;\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tupdate: function ( inputSource, frame, referenceSpace ) {\n\n\t\tlet inputPose = null;\n\t\tlet gripPose = null;\n\t\tlet handPose = null;\n\n\t\tconst targetRay = this._targetRay;\n\t\tconst grip = this._grip;\n\t\tconst hand = this._hand;\n\n\t\tif ( inputSource && frame.session.visibilityState !== 'visible-blurred' ) {\n\n\t\t\tif ( hand && inputSource.hand ) {\n\n\t\t\t\thandPose = true;\n\n\t\t\t\tfor ( let i = 0; i <= window.XRHand.LITTLE_PHALANX_TIP; i ++ ) {\n\n\t\t\t\t\tif ( inputSource.hand[ i ] ) {\n\n\t\t\t\t\t\t// Update the joints groups with the XRJoint poses\n\t\t\t\t\t\tconst jointPose = frame.getJointPose( inputSource.hand[ i ], referenceSpace );\n\t\t\t\t\t\tconst joint = hand.joints[ i ];\n\n\t\t\t\t\t\tif ( jointPose !== null ) {\n\n\t\t\t\t\t\t\tjoint.matrix.fromArray( jointPose.transform.matrix );\n\t\t\t\t\t\t\tjoint.matrix.decompose( joint.position, joint.rotation, joint.scale );\n\t\t\t\t\t\t\tjoint.jointRadius = jointPose.radius;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tjoint.visible = jointPose !== null;\n\n\t\t\t\t\t\t// Custom events\n\n\t\t\t\t\t\t// Check pinch\n\t\t\t\t\t\tconst indexTip = hand.joints[ window.XRHand.INDEX_PHALANX_TIP ];\n\t\t\t\t\t\tconst thumbTip = hand.joints[ window.XRHand.THUMB_PHALANX_TIP ];\n\t\t\t\t\t\tconst distance = indexTip.position.distanceTo( thumbTip.position );\n\n\t\t\t\t\t\tconst distanceToPinch = 0.02;\n\t\t\t\t\t\tconst threshold = 0.005;\n\n\t\t\t\t\t\tif ( hand.inputState.pinching && distance > distanceToPinch + threshold ) {\n\n\t\t\t\t\t\t\thand.inputState.pinching = false;\n\t\t\t\t\t\t\tthis.dispatchEvent( {\n\t\t\t\t\t\t\t\ttype: 'pinchend',\n\t\t\t\t\t\t\t\thandedness: inputSource.handedness,\n\t\t\t\t\t\t\t\ttarget: this\n\t\t\t\t\t\t\t} );\n\n\t\t\t\t\t\t} else if ( ! hand.inputState.pinching && distance <= distanceToPinch - threshold ) {\n\n\t\t\t\t\t\t\thand.inputState.pinching = true;\n\t\t\t\t\t\t\tthis.dispatchEvent( {\n\t\t\t\t\t\t\t\ttype: 'pinchstart',\n\t\t\t\t\t\t\t\thandedness: inputSource.handedness,\n\t\t\t\t\t\t\t\ttarget: this\n\t\t\t\t\t\t\t} );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tif ( targetRay !== null ) {\n\n\t\t\t\t\tinputPose = frame.getPose( inputSource.targetRaySpace, referenceSpace );\n\n\t\t\t\t\tif ( inputPose !== null ) {\n\n\t\t\t\t\t\ttargetRay.matrix.fromArray( inputPose.transform.matrix );\n\t\t\t\t\t\ttargetRay.matrix.decompose( targetRay.position, targetRay.rotation, targetRay.scale );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tif ( grip !== null && inputSource.gripSpace ) {\n\n\t\t\t\t\tgripPose = frame.getPose( inputSource.gripSpace, referenceSpace );\n\n\t\t\t\t\tif ( gripPose !== null ) {\n\n\t\t\t\t\t\tgrip.matrix.fromArray( gripPose.transform.matrix );\n\t\t\t\t\t\tgrip.matrix.decompose( grip.position, grip.rotation, grip.scale );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( targetRay !== null ) {\n\n\t\t\ttargetRay.visible = ( inputPose !== null );\n\n\t\t}\n\n\t\tif ( grip !== null ) {\n\n\t\t\tgrip.visible = ( gripPose !== null );\n\n\t\t}\n\n\t\tif ( hand !== null ) {\n\n\t\t\thand.visible = ( handPose !== null );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n} );\n\nfunction WebXRManager( renderer, gl ) {\n\n\tconst scope = this;\n\n\tlet session = null;\n\n\tlet framebufferScaleFactor = 1.0;\n\n\tlet referenceSpace = null;\n\tlet referenceSpaceType = 'local-floor';\n\n\tlet pose = null;\n\n\tconst controllers = [];\n\tconst inputSourcesMap = new Map();\n\n\t//\n\n\tconst cameraL = new PerspectiveCamera();\n\tcameraL.layers.enable( 1 );\n\tcameraL.viewport = new Vector4();\n\n\tconst cameraR = new PerspectiveCamera();\n\tcameraR.layers.enable( 2 );\n\tcameraR.viewport = new Vector4();\n\n\tconst cameras = [ cameraL, cameraR ];\n\n\tconst cameraVR = new ArrayCamera();\n\tcameraVR.layers.enable( 1 );\n\tcameraVR.layers.enable( 2 );\n\n\tlet _currentDepthNear = null;\n\tlet _currentDepthFar = null;\n\n\t//\n\n\tthis.enabled = false;\n\n\tthis.isPresenting = false;\n\n\tthis.getController = function ( index ) {\n\n\t\tlet controller = controllers[ index ];\n\n\t\tif ( controller === undefined ) {\n\n\t\t\tcontroller = new WebXRController();\n\t\t\tcontrollers[ index ] = controller;\n\n\t\t}\n\n\t\treturn controller.getTargetRaySpace();\n\n\t};\n\n\tthis.getControllerGrip = function ( index ) {\n\n\t\tlet controller = controllers[ index ];\n\n\t\tif ( controller === undefined ) {\n\n\t\t\tcontroller = new WebXRController();\n\t\t\tcontrollers[ index ] = controller;\n\n\t\t}\n\n\t\treturn controller.getGripSpace();\n\n\t};\n\n\tthis.getHand = function ( index ) {\n\n\t\tlet controller = controllers[ index ];\n\n\t\tif ( controller === undefined ) {\n\n\t\t\tcontroller = new WebXRController();\n\t\t\tcontrollers[ index ] = controller;\n\n\t\t}\n\n\t\treturn controller.getHandSpace();\n\n\t};\n\n\t//\n\n\tfunction onSessionEvent( event ) {\n\n\t\tconst controller = inputSourcesMap.get( event.inputSource );\n\n\t\tif ( controller ) {\n\n\t\t\tcontroller.dispatchEvent( { type: event.type, data: event.inputSource } );\n\n\t\t}\n\n\t}\n\n\tfunction onSessionEnd() {\n\n\t\tinputSourcesMap.forEach( function ( controller, inputSource ) {\n\n\t\t\tcontroller.disconnect( inputSource );\n\n\t\t} );\n\n\t\tinputSourcesMap.clear();\n\n\t\t//\n\n\t\trenderer.setFramebuffer( null );\n\t\trenderer.setRenderTarget( renderer.getRenderTarget() ); // Hack #15830\n\t\tanimation.stop();\n\n\t\tscope.isPresenting = false;\n\n\t\tscope.dispatchEvent( { type: 'sessionend' } );\n\n\t}\n\n\tfunction onRequestReferenceSpace( value ) {\n\n\t\treferenceSpace = value;\n\n\t\tanimation.setContext( session );\n\t\tanimation.start();\n\n\t\tscope.isPresenting = true;\n\n\t\tscope.dispatchEvent( { type: 'sessionstart' } );\n\n\t}\n\n\tthis.setFramebufferScaleFactor = function ( value ) {\n\n\t\tframebufferScaleFactor = value;\n\n\t\tif ( scope.isPresenting === true ) {\n\n\t\t\tconsole.warn( 'THREE.WebXRManager: Cannot change framebuffer scale while presenting.' );\n\n\t\t}\n\n\t};\n\n\tthis.setReferenceSpaceType = function ( value ) {\n\n\t\treferenceSpaceType = value;\n\n\t\tif ( scope.isPresenting === true ) {\n\n\t\t\tconsole.warn( 'THREE.WebXRManager: Cannot change reference space type while presenting.' );\n\n\t\t}\n\n\t};\n\n\tthis.getReferenceSpace = function () {\n\n\t\treturn referenceSpace;\n\n\t};\n\n\tthis.getSession = function () {\n\n\t\treturn session;\n\n\t};\n\n\tthis.setSession = function ( value ) {\n\n\t\tsession = value;\n\n\t\tif ( session !== null ) {\n\n\t\t\tsession.addEventListener( 'select', onSessionEvent );\n\t\t\tsession.addEventListener( 'selectstart', onSessionEvent );\n\t\t\tsession.addEventListener( 'selectend', onSessionEvent );\n\t\t\tsession.addEventListener( 'squeeze', onSessionEvent );\n\t\t\tsession.addEventListener( 'squeezestart', onSessionEvent );\n\t\t\tsession.addEventListener( 'squeezeend', onSessionEvent );\n\t\t\tsession.addEventListener( 'end', onSessionEnd );\n\n\t\t\tconst attributes = gl.getContextAttributes();\n\n\t\t\tif ( attributes.xrCompatible !== true ) {\n\n\t\t\t\tgl.makeXRCompatible();\n\n\t\t\t}\n\n\t\t\tconst layerInit = {\n\t\t\t\tantialias: attributes.antialias,\n\t\t\t\talpha: attributes.alpha,\n\t\t\t\tdepth: attributes.depth,\n\t\t\t\tstencil: attributes.stencil,\n\t\t\t\tframebufferScaleFactor: framebufferScaleFactor\n\t\t\t};\n\n\t\t\t// eslint-disable-next-line no-undef\n\t\t\tconst baseLayer = new XRWebGLLayer( session, gl, layerInit );\n\n\t\t\tsession.updateRenderState( { baseLayer: baseLayer } );\n\n\t\t\tsession.requestReferenceSpace( referenceSpaceType ).then( onRequestReferenceSpace );\n\n\t\t\t//\n\n\t\t\tsession.addEventListener( 'inputsourceschange', updateInputSources );\n\n\t\t}\n\n\t};\n\n\tfunction updateInputSources( event ) {\n\n\t\tconst inputSources = session.inputSources;\n\n\t\t// Assign inputSources to available controllers\n\n\t\tfor ( let i = 0; i < controllers.length; i ++ ) {\n\n\t\t\tinputSourcesMap.set( inputSources[ i ], controllers[ i ] );\n\n\t\t}\n\n\t\t// Notify disconnected\n\n\t\tfor ( let i = 0; i < event.removed.length; i ++ ) {\n\n\t\t\tconst inputSource = event.removed[ i ];\n\t\t\tconst controller = inputSourcesMap.get( inputSource );\n\n\t\t\tif ( controller ) {\n\n\t\t\t\tcontroller.dispatchEvent( { type: 'disconnected', data: inputSource } );\n\t\t\t\tinputSourcesMap.delete( inputSource );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// Notify connected\n\n\t\tfor ( let i = 0; i < event.added.length; i ++ ) {\n\n\t\t\tconst inputSource = event.added[ i ];\n\t\t\tconst controller = inputSourcesMap.get( inputSource );\n\n\t\t\tif ( controller ) {\n\n\t\t\t\tcontroller.dispatchEvent( { type: 'connected', data: inputSource } );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\t//\n\n\tconst cameraLPos = new Vector3();\n\tconst cameraRPos = new Vector3();\n\n\t/**\n\t * Assumes 2 cameras that are parallel and share an X-axis, and that\n\t * the cameras' projection and world matrices have already been set.\n\t * And that near and far planes are identical for both cameras.\n\t * Visualization of this technique: https://computergraphics.stackexchange.com/a/4765\n\t */\n\tfunction setProjectionFromUnion( camera, cameraL, cameraR ) {\n\n\t\tcameraLPos.setFromMatrixPosition( cameraL.matrixWorld );\n\t\tcameraRPos.setFromMatrixPosition( cameraR.matrixWorld );\n\n\t\tconst ipd = cameraLPos.distanceTo( cameraRPos );\n\n\t\tconst projL = cameraL.projectionMatrix.elements;\n\t\tconst projR = cameraR.projectionMatrix.elements;\n\n\t\t// VR systems will have identical far and near planes, and\n\t\t// most likely identical top and bottom frustum extents.\n\t\t// Use the left camera for these values.\n\t\tconst near = projL[ 14 ] / ( projL[ 10 ] - 1 );\n\t\tconst far = projL[ 14 ] / ( projL[ 10 ] + 1 );\n\t\tconst topFov = ( projL[ 9 ] + 1 ) / projL[ 5 ];\n\t\tconst bottomFov = ( projL[ 9 ] - 1 ) / projL[ 5 ];\n\n\t\tconst leftFov = ( projL[ 8 ] - 1 ) / projL[ 0 ];\n\t\tconst rightFov = ( projR[ 8 ] + 1 ) / projR[ 0 ];\n\t\tconst left = near * leftFov;\n\t\tconst right = near * rightFov;\n\n\t\t// Calculate the new camera's position offset from the\n\t\t// left camera. xOffset should be roughly half `ipd`.\n\t\tconst zOffset = ipd / ( - leftFov + rightFov );\n\t\tconst xOffset = zOffset * - leftFov;\n\n\t\t// TODO: Better way to apply this offset?\n\t\tcameraL.matrixWorld.decompose( camera.position, camera.quaternion, camera.scale );\n\t\tcamera.translateX( xOffset );\n\t\tcamera.translateZ( zOffset );\n\t\tcamera.matrixWorld.compose( camera.position, camera.quaternion, camera.scale );\n\t\tcamera.matrixWorldInverse.copy( camera.matrixWorld ).invert();\n\n\t\t// Find the union of the frustum values of the cameras and scale\n\t\t// the values so that the near plane's position does not change in world space,\n\t\t// although must now be relative to the new union camera.\n\t\tconst near2 = near + zOffset;\n\t\tconst far2 = far + zOffset;\n\t\tconst left2 = left - xOffset;\n\t\tconst right2 = right + ( ipd - xOffset );\n\t\tconst top2 = topFov * far / far2 * near2;\n\t\tconst bottom2 = bottomFov * far / far2 * near2;\n\n\t\tcamera.projectionMatrix.makePerspective( left2, right2, top2, bottom2, near2, far2 );\n\n\t}\n\n\tfunction updateCamera( camera, parent ) {\n\n\t\tif ( parent === null ) {\n\n\t\t\tcamera.matrixWorld.copy( camera.matrix );\n\n\t\t} else {\n\n\t\t\tcamera.matrixWorld.multiplyMatrices( parent.matrixWorld, camera.matrix );\n\n\t\t}\n\n\t\tcamera.matrixWorldInverse.copy( camera.matrixWorld ).invert();\n\n\t}\n\n\tthis.getCamera = function ( camera ) {\n\n\t\tcameraVR.near = cameraR.near = cameraL.near = camera.near;\n\t\tcameraVR.far = cameraR.far = cameraL.far = camera.far;\n\n\t\tif ( _currentDepthNear !== cameraVR.near || _currentDepthFar !== cameraVR.far ) {\n\n\t\t\t// Note that the new renderState won't apply until the next frame. See #18320\n\n\t\t\tsession.updateRenderState( {\n\t\t\t\tdepthNear: cameraVR.near,\n\t\t\t\tdepthFar: cameraVR.far\n\t\t\t} );\n\n\t\t\t_currentDepthNear = cameraVR.near;\n\t\t\t_currentDepthFar = cameraVR.far;\n\n\t\t}\n\n\t\tconst parent = camera.parent;\n\t\tconst cameras = cameraVR.cameras;\n\n\t\tupdateCamera( cameraVR, parent );\n\n\t\tfor ( let i = 0; i < cameras.length; i ++ ) {\n\n\t\t\tupdateCamera( cameras[ i ], parent );\n\n\t\t}\n\n\t\t// update camera and its children\n\n\t\tcamera.matrixWorld.copy( cameraVR.matrixWorld );\n\n\t\tconst children = camera.children;\n\n\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\tchildren[ i ].updateMatrixWorld( true );\n\n\t\t}\n\n\t\t// update projection matrix for proper view frustum culling\n\n\t\tif ( cameras.length === 2 ) {\n\n\t\t\tsetProjectionFromUnion( cameraVR, cameraL, cameraR );\n\n\t\t} else {\n\n\t\t\t// assume single camera setup (AR)\n\n\t\t\tcameraVR.projectionMatrix.copy( cameraL.projectionMatrix );\n\n\t\t}\n\n\t\treturn cameraVR;\n\n\t};\n\n\t// Animation Loop\n\n\tlet onAnimationFrameCallback = null;\n\n\tfunction onAnimationFrame( time, frame ) {\n\n\t\tpose = frame.getViewerPose( referenceSpace );\n\n\t\tif ( pose !== null ) {\n\n\t\t\tconst views = pose.views;\n\t\t\tconst baseLayer = session.renderState.baseLayer;\n\n\t\t\trenderer.setFramebuffer( baseLayer.framebuffer );\n\n\t\t\tlet cameraVRNeedsUpdate = false;\n\n\t\t\t// check if it's necessary to rebuild cameraVR's camera list\n\n\t\t\tif ( views.length !== cameraVR.cameras.length ) {\n\n\t\t\t\tcameraVR.cameras.length = 0;\n\t\t\t\tcameraVRNeedsUpdate = true;\n\n\t\t\t}\n\n\t\t\tfor ( let i = 0; i < views.length; i ++ ) {\n\n\t\t\t\tconst view = views[ i ];\n\t\t\t\tconst viewport = baseLayer.getViewport( view );\n\n\t\t\t\tconst camera = cameras[ i ];\n\t\t\t\tcamera.matrix.fromArray( view.transform.matrix );\n\t\t\t\tcamera.projectionMatrix.fromArray( view.projectionMatrix );\n\t\t\t\tcamera.viewport.set( viewport.x, viewport.y, viewport.width, viewport.height );\n\n\t\t\t\tif ( i === 0 ) {\n\n\t\t\t\t\tcameraVR.matrix.copy( camera.matrix );\n\n\t\t\t\t}\n\n\t\t\t\tif ( cameraVRNeedsUpdate === true ) {\n\n\t\t\t\t\tcameraVR.cameras.push( camera );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\t//\n\n\t\tconst inputSources = session.inputSources;\n\n\t\tfor ( let i = 0; i < controllers.length; i ++ ) {\n\n\t\t\tconst controller = controllers[ i ];\n\t\t\tconst inputSource = inputSources[ i ];\n\n\t\t\tcontroller.update( inputSource, frame, referenceSpace );\n\n\t\t}\n\n\t\tif ( onAnimationFrameCallback ) onAnimationFrameCallback( time, frame );\n\n\t}\n\n\tconst animation = new WebGLAnimation();\n\tanimation.setAnimationLoop( onAnimationFrame );\n\n\tthis.setAnimationLoop = function ( callback ) {\n\n\t\tonAnimationFrameCallback = callback;\n\n\t};\n\n\tthis.dispose = function () {};\n\n}\n\nObject.assign( WebXRManager.prototype, EventDispatcher.prototype );\n\nfunction WebGLMaterials( properties ) {\n\n\tfunction refreshFogUniforms( uniforms, fog ) {\n\n\t\tuniforms.fogColor.value.copy( fog.color );\n\n\t\tif ( fog.isFog ) {\n\n\t\t\tuniforms.fogNear.value = fog.near;\n\t\t\tuniforms.fogFar.value = fog.far;\n\n\t\t} else if ( fog.isFogExp2 ) {\n\n\t\t\tuniforms.fogDensity.value = fog.density;\n\n\t\t}\n\n\t}\n\n\tfunction refreshMaterialUniforms( uniforms, material, pixelRatio, height ) {\n\n\t\tif ( material.isMeshBasicMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\n\t\t} else if ( material.isMeshLambertMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\t\t\trefreshUniformsLambert( uniforms, material );\n\n\t\t} else if ( material.isMeshToonMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\t\t\trefreshUniformsToon( uniforms, material );\n\n\t\t} else if ( material.isMeshPhongMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\t\t\trefreshUniformsPhong( uniforms, material );\n\n\t\t} else if ( material.isMeshStandardMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\n\t\t\tif ( material.isMeshPhysicalMaterial ) {\n\n\t\t\t\trefreshUniformsPhysical( uniforms, material );\n\n\t\t\t} else {\n\n\t\t\t\trefreshUniformsStandard( uniforms, material );\n\n\t\t\t}\n\n\t\t} else if ( material.isMeshMatcapMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\t\t\trefreshUniformsMatcap( uniforms, material );\n\n\t\t} else if ( material.isMeshDepthMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\t\t\trefreshUniformsDepth( uniforms, material );\n\n\t\t} else if ( material.isMeshDistanceMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\t\t\trefreshUniformsDistance( uniforms, material );\n\n\t\t} else if ( material.isMeshNormalMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\t\t\trefreshUniformsNormal( uniforms, material );\n\n\t\t} else if ( material.isLineBasicMaterial ) {\n\n\t\t\trefreshUniformsLine( uniforms, material );\n\n\t\t\tif ( material.isLineDashedMaterial ) {\n\n\t\t\t\trefreshUniformsDash( uniforms, material );\n\n\t\t\t}\n\n\t\t} else if ( material.isPointsMaterial ) {\n\n\t\t\trefreshUniformsPoints( uniforms, material, pixelRatio, height );\n\n\t\t} else if ( material.isSpriteMaterial ) {\n\n\t\t\trefreshUniformsSprites( uniforms, material );\n\n\t\t} else if ( material.isShadowMaterial ) {\n\n\t\t\tuniforms.color.value.copy( material.color );\n\t\t\tuniforms.opacity.value = material.opacity;\n\n\t\t} else if ( material.isShaderMaterial ) {\n\n\t\t\tmaterial.uniformsNeedUpdate = false; // #15581\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsCommon( uniforms, material ) {\n\n\t\tuniforms.opacity.value = material.opacity;\n\n\t\tif ( material.color ) {\n\n\t\t\tuniforms.diffuse.value.copy( material.color );\n\n\t\t}\n\n\t\tif ( material.emissive ) {\n\n\t\t\tuniforms.emissive.value.copy( material.emissive ).multiplyScalar( material.emissiveIntensity );\n\n\t\t}\n\n\t\tif ( material.map ) {\n\n\t\t\tuniforms.map.value = material.map;\n\n\t\t}\n\n\t\tif ( material.alphaMap ) {\n\n\t\t\tuniforms.alphaMap.value = material.alphaMap;\n\n\t\t}\n\n\t\tif ( material.specularMap ) {\n\n\t\t\tuniforms.specularMap.value = material.specularMap;\n\n\t\t}\n\n\t\tconst envMap = properties.get( material ).envMap;\n\n\t\tif ( envMap ) {\n\n\t\t\tuniforms.envMap.value = envMap;\n\n\t\t\tuniforms.flipEnvMap.value = ( envMap.isCubeTexture && envMap._needsFlipEnvMap ) ? - 1 : 1;\n\n\t\t\tuniforms.reflectivity.value = material.reflectivity;\n\t\t\tuniforms.refractionRatio.value = material.refractionRatio;\n\n\t\t\tconst maxMipLevel = properties.get( envMap ).__maxMipLevel;\n\n\t\t\tif ( maxMipLevel !== undefined ) {\n\n\t\t\t\tuniforms.maxMipLevel.value = maxMipLevel;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( material.lightMap ) {\n\n\t\t\tuniforms.lightMap.value = material.lightMap;\n\t\t\tuniforms.lightMapIntensity.value = material.lightMapIntensity;\n\n\t\t}\n\n\t\tif ( material.aoMap ) {\n\n\t\t\tuniforms.aoMap.value = material.aoMap;\n\t\t\tuniforms.aoMapIntensity.value = material.aoMapIntensity;\n\n\t\t}\n\n\t\t// uv repeat and offset setting priorities\n\t\t// 1. color map\n\t\t// 2. specular map\n\t\t// 3. displacementMap map\n\t\t// 4. normal map\n\t\t// 5. bump map\n\t\t// 6. roughnessMap map\n\t\t// 7. metalnessMap map\n\t\t// 8. alphaMap map\n\t\t// 9. emissiveMap map\n\t\t// 10. clearcoat map\n\t\t// 11. clearcoat normal map\n\t\t// 12. clearcoat roughnessMap map\n\n\t\tlet uvScaleMap;\n\n\t\tif ( material.map ) {\n\n\t\t\tuvScaleMap = material.map;\n\n\t\t} else if ( material.specularMap ) {\n\n\t\t\tuvScaleMap = material.specularMap;\n\n\t\t} else if ( material.displacementMap ) {\n\n\t\t\tuvScaleMap = material.displacementMap;\n\n\t\t} else if ( material.normalMap ) {\n\n\t\t\tuvScaleMap = material.normalMap;\n\n\t\t} else if ( material.bumpMap ) {\n\n\t\t\tuvScaleMap = material.bumpMap;\n\n\t\t} else if ( material.roughnessMap ) {\n\n\t\t\tuvScaleMap = material.roughnessMap;\n\n\t\t} else if ( material.metalnessMap ) {\n\n\t\t\tuvScaleMap = material.metalnessMap;\n\n\t\t} else if ( material.alphaMap ) {\n\n\t\t\tuvScaleMap = material.alphaMap;\n\n\t\t} else if ( material.emissiveMap ) {\n\n\t\t\tuvScaleMap = material.emissiveMap;\n\n\t\t} else if ( material.clearcoatMap ) {\n\n\t\t\tuvScaleMap = material.clearcoatMap;\n\n\t\t} else if ( material.clearcoatNormalMap ) {\n\n\t\t\tuvScaleMap = material.clearcoatNormalMap;\n\n\t\t} else if ( material.clearcoatRoughnessMap ) {\n\n\t\t\tuvScaleMap = material.clearcoatRoughnessMap;\n\n\t\t}\n\n\t\tif ( uvScaleMap !== undefined ) {\n\n\t\t\t// backwards compatibility\n\t\t\tif ( uvScaleMap.isWebGLRenderTarget ) {\n\n\t\t\t\tuvScaleMap = uvScaleMap.texture;\n\n\t\t\t}\n\n\t\t\tif ( uvScaleMap.matrixAutoUpdate === true ) {\n\n\t\t\t\tuvScaleMap.updateMatrix();\n\n\t\t\t}\n\n\t\t\tuniforms.uvTransform.value.copy( uvScaleMap.matrix );\n\n\t\t}\n\n\t\t// uv repeat and offset setting priorities for uv2\n\t\t// 1. ao map\n\t\t// 2. light map\n\n\t\tlet uv2ScaleMap;\n\n\t\tif ( material.aoMap ) {\n\n\t\t\tuv2ScaleMap = material.aoMap;\n\n\t\t} else if ( material.lightMap ) {\n\n\t\t\tuv2ScaleMap = material.lightMap;\n\n\t\t}\n\n\t\tif ( uv2ScaleMap !== undefined ) {\n\n\t\t\t// backwards compatibility\n\t\t\tif ( uv2ScaleMap.isWebGLRenderTarget ) {\n\n\t\t\t\tuv2ScaleMap = uv2ScaleMap.texture;\n\n\t\t\t}\n\n\t\t\tif ( uv2ScaleMap.matrixAutoUpdate === true ) {\n\n\t\t\t\tuv2ScaleMap.updateMatrix();\n\n\t\t\t}\n\n\t\t\tuniforms.uv2Transform.value.copy( uv2ScaleMap.matrix );\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsLine( uniforms, material ) {\n\n\t\tuniforms.diffuse.value.copy( material.color );\n\t\tuniforms.opacity.value = material.opacity;\n\n\t}\n\n\tfunction refreshUniformsDash( uniforms, material ) {\n\n\t\tuniforms.dashSize.value = material.dashSize;\n\t\tuniforms.totalSize.value = material.dashSize + material.gapSize;\n\t\tuniforms.scale.value = material.scale;\n\n\t}\n\n\tfunction refreshUniformsPoints( uniforms, material, pixelRatio, height ) {\n\n\t\tuniforms.diffuse.value.copy( material.color );\n\t\tuniforms.opacity.value = material.opacity;\n\t\tuniforms.size.value = material.size * pixelRatio;\n\t\tuniforms.scale.value = height * 0.5;\n\n\t\tif ( material.map ) {\n\n\t\t\tuniforms.map.value = material.map;\n\n\t\t}\n\n\t\tif ( material.alphaMap ) {\n\n\t\t\tuniforms.alphaMap.value = material.alphaMap;\n\n\t\t}\n\n\t\t// uv repeat and offset setting priorities\n\t\t// 1. color map\n\t\t// 2. alpha map\n\n\t\tlet uvScaleMap;\n\n\t\tif ( material.map ) {\n\n\t\t\tuvScaleMap = material.map;\n\n\t\t} else if ( material.alphaMap ) {\n\n\t\t\tuvScaleMap = material.alphaMap;\n\n\t\t}\n\n\t\tif ( uvScaleMap !== undefined ) {\n\n\t\t\tif ( uvScaleMap.matrixAutoUpdate === true ) {\n\n\t\t\t\tuvScaleMap.updateMatrix();\n\n\t\t\t}\n\n\t\t\tuniforms.uvTransform.value.copy( uvScaleMap.matrix );\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsSprites( uniforms, material ) {\n\n\t\tuniforms.diffuse.value.copy( material.color );\n\t\tuniforms.opacity.value = material.opacity;\n\t\tuniforms.rotation.value = material.rotation;\n\n\t\tif ( material.map ) {\n\n\t\t\tuniforms.map.value = material.map;\n\n\t\t}\n\n\t\tif ( material.alphaMap ) {\n\n\t\t\tuniforms.alphaMap.value = material.alphaMap;\n\n\t\t}\n\n\t\t// uv repeat and offset setting priorities\n\t\t// 1. color map\n\t\t// 2. alpha map\n\n\t\tlet uvScaleMap;\n\n\t\tif ( material.map ) {\n\n\t\t\tuvScaleMap = material.map;\n\n\t\t} else if ( material.alphaMap ) {\n\n\t\t\tuvScaleMap = material.alphaMap;\n\n\t\t}\n\n\t\tif ( uvScaleMap !== undefined ) {\n\n\t\t\tif ( uvScaleMap.matrixAutoUpdate === true ) {\n\n\t\t\t\tuvScaleMap.updateMatrix();\n\n\t\t\t}\n\n\t\t\tuniforms.uvTransform.value.copy( uvScaleMap.matrix );\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsLambert( uniforms, material ) {\n\n\t\tif ( material.emissiveMap ) {\n\n\t\t\tuniforms.emissiveMap.value = material.emissiveMap;\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsPhong( uniforms, material ) {\n\n\t\tuniforms.specular.value.copy( material.specular );\n\t\tuniforms.shininess.value = Math.max( material.shininess, 1e-4 ); // to prevent pow( 0.0, 0.0 )\n\n\t\tif ( material.emissiveMap ) {\n\n\t\t\tuniforms.emissiveMap.value = material.emissiveMap;\n\n\t\t}\n\n\t\tif ( material.bumpMap ) {\n\n\t\t\tuniforms.bumpMap.value = material.bumpMap;\n\t\t\tuniforms.bumpScale.value = material.bumpScale;\n\t\t\tif ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;\n\n\t\t}\n\n\t\tif ( material.normalMap ) {\n\n\t\t\tuniforms.normalMap.value = material.normalMap;\n\t\t\tuniforms.normalScale.value.copy( material.normalScale );\n\t\t\tif ( material.side === BackSide ) uniforms.normalScale.value.negate();\n\n\t\t}\n\n\t\tif ( material.displacementMap ) {\n\n\t\t\tuniforms.displacementMap.value = material.displacementMap;\n\t\t\tuniforms.displacementScale.value = material.displacementScale;\n\t\t\tuniforms.displacementBias.value = material.displacementBias;\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsToon( uniforms, material ) {\n\n\t\tif ( material.gradientMap ) {\n\n\t\t\tuniforms.gradientMap.value = material.gradientMap;\n\n\t\t}\n\n\t\tif ( material.emissiveMap ) {\n\n\t\t\tuniforms.emissiveMap.value = material.emissiveMap;\n\n\t\t}\n\n\t\tif ( material.bumpMap ) {\n\n\t\t\tuniforms.bumpMap.value = material.bumpMap;\n\t\t\tuniforms.bumpScale.value = material.bumpScale;\n\t\t\tif ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;\n\n\t\t}\n\n\t\tif ( material.normalMap ) {\n\n\t\t\tuniforms.normalMap.value = material.normalMap;\n\t\t\tuniforms.normalScale.value.copy( material.normalScale );\n\t\t\tif ( material.side === BackSide ) uniforms.normalScale.value.negate();\n\n\t\t}\n\n\t\tif ( material.displacementMap ) {\n\n\t\t\tuniforms.displacementMap.value = material.displacementMap;\n\t\t\tuniforms.displacementScale.value = material.displacementScale;\n\t\t\tuniforms.displacementBias.value = material.displacementBias;\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsStandard( uniforms, material ) {\n\n\t\tuniforms.roughness.value = material.roughness;\n\t\tuniforms.metalness.value = material.metalness;\n\n\t\tif ( material.roughnessMap ) {\n\n\t\t\tuniforms.roughnessMap.value = material.roughnessMap;\n\n\t\t}\n\n\t\tif ( material.metalnessMap ) {\n\n\t\t\tuniforms.metalnessMap.value = material.metalnessMap;\n\n\t\t}\n\n\t\tif ( material.emissiveMap ) {\n\n\t\t\tuniforms.emissiveMap.value = material.emissiveMap;\n\n\t\t}\n\n\t\tif ( material.bumpMap ) {\n\n\t\t\tuniforms.bumpMap.value = material.bumpMap;\n\t\t\tuniforms.bumpScale.value = material.bumpScale;\n\t\t\tif ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;\n\n\t\t}\n\n\t\tif ( material.normalMap ) {\n\n\t\t\tuniforms.normalMap.value = material.normalMap;\n\t\t\tuniforms.normalScale.value.copy( material.normalScale );\n\t\t\tif ( material.side === BackSide ) uniforms.normalScale.value.negate();\n\n\t\t}\n\n\t\tif ( material.displacementMap ) {\n\n\t\t\tuniforms.displacementMap.value = material.displacementMap;\n\t\t\tuniforms.displacementScale.value = material.displacementScale;\n\t\t\tuniforms.displacementBias.value = material.displacementBias;\n\n\t\t}\n\n\t\tconst envMap = properties.get( material ).envMap;\n\n\t\tif ( envMap ) {\n\n\t\t\t//uniforms.envMap.value = material.envMap; // part of uniforms common\n\t\t\tuniforms.envMapIntensity.value = material.envMapIntensity;\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsPhysical( uniforms, material ) {\n\n\t\trefreshUniformsStandard( uniforms, material );\n\n\t\tuniforms.reflectivity.value = material.reflectivity; // also part of uniforms common\n\n\t\tuniforms.clearcoat.value = material.clearcoat;\n\t\tuniforms.clearcoatRoughness.value = material.clearcoatRoughness;\n\t\tif ( material.sheen ) uniforms.sheen.value.copy( material.sheen );\n\n\t\tif ( material.clearcoatMap ) {\n\n\t\t\tuniforms.clearcoatMap.value = material.clearcoatMap;\n\n\t\t}\n\n\t\tif ( material.clearcoatRoughnessMap ) {\n\n\t\t\tuniforms.clearcoatRoughnessMap.value = material.clearcoatRoughnessMap;\n\n\t\t}\n\n\t\tif ( material.clearcoatNormalMap ) {\n\n\t\t\tuniforms.clearcoatNormalScale.value.copy( material.clearcoatNormalScale );\n\t\t\tuniforms.clearcoatNormalMap.value = material.clearcoatNormalMap;\n\n\t\t\tif ( material.side === BackSide ) {\n\n\t\t\t\tuniforms.clearcoatNormalScale.value.negate();\n\n\t\t\t}\n\n\t\t}\n\n\t\tuniforms.transmission.value = material.transmission;\n\n\t\tif ( material.transmissionMap ) {\n\n\t\t\tuniforms.transmissionMap.value = material.transmissionMap;\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsMatcap( uniforms, material ) {\n\n\t\tif ( material.matcap ) {\n\n\t\t\tuniforms.matcap.value = material.matcap;\n\n\t\t}\n\n\t\tif ( material.bumpMap ) {\n\n\t\t\tuniforms.bumpMap.value = material.bumpMap;\n\t\t\tuniforms.bumpScale.value = material.bumpScale;\n\t\t\tif ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;\n\n\t\t}\n\n\t\tif ( material.normalMap ) {\n\n\t\t\tuniforms.normalMap.value = material.normalMap;\n\t\t\tuniforms.normalScale.value.copy( material.normalScale );\n\t\t\tif ( material.side === BackSide ) uniforms.normalScale.value.negate();\n\n\t\t}\n\n\t\tif ( material.displacementMap ) {\n\n\t\t\tuniforms.displacementMap.value = material.displacementMap;\n\t\t\tuniforms.displacementScale.value = material.displacementScale;\n\t\t\tuniforms.displacementBias.value = material.displacementBias;\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsDepth( uniforms, material ) {\n\n\t\tif ( material.displacementMap ) {\n\n\t\t\tuniforms.displacementMap.value = material.displacementMap;\n\t\t\tuniforms.displacementScale.value = material.displacementScale;\n\t\t\tuniforms.displacementBias.value = material.displacementBias;\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsDistance( uniforms, material ) {\n\n\t\tif ( material.displacementMap ) {\n\n\t\t\tuniforms.displacementMap.value = material.displacementMap;\n\t\t\tuniforms.displacementScale.value = material.displacementScale;\n\t\t\tuniforms.displacementBias.value = material.displacementBias;\n\n\t\t}\n\n\t\tuniforms.referencePosition.value.copy( material.referencePosition );\n\t\tuniforms.nearDistance.value = material.nearDistance;\n\t\tuniforms.farDistance.value = material.farDistance;\n\n\t}\n\n\tfunction refreshUniformsNormal( uniforms, material ) {\n\n\t\tif ( material.bumpMap ) {\n\n\t\t\tuniforms.bumpMap.value = material.bumpMap;\n\t\t\tuniforms.bumpScale.value = material.bumpScale;\n\t\t\tif ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;\n\n\t\t}\n\n\t\tif ( material.normalMap ) {\n\n\t\t\tuniforms.normalMap.value = material.normalMap;\n\t\t\tuniforms.normalScale.value.copy( material.normalScale );\n\t\t\tif ( material.side === BackSide ) uniforms.normalScale.value.negate();\n\n\t\t}\n\n\t\tif ( material.displacementMap ) {\n\n\t\t\tuniforms.displacementMap.value = material.displacementMap;\n\t\t\tuniforms.displacementScale.value = material.displacementScale;\n\t\t\tuniforms.displacementBias.value = material.displacementBias;\n\n\t\t}\n\n\t}\n\n\treturn {\n\t\trefreshFogUniforms: refreshFogUniforms,\n\t\trefreshMaterialUniforms: refreshMaterialUniforms\n\t};\n\n}\n\nfunction createCanvasElement() {\n\n\tconst canvas = document.createElementNS( 'http://www.w3.org/1999/xhtml', 'canvas' );\n\tcanvas.style.display = 'block';\n\treturn canvas;\n\n}\n\nfunction WebGLRenderer( parameters ) {\n\n\tparameters = parameters || {};\n\n\tconst _canvas = parameters.canvas !== undefined ? parameters.canvas : createCanvasElement(),\n\t\t_context = parameters.context !== undefined ? parameters.context : null,\n\n\t\t_alpha = parameters.alpha !== undefined ? parameters.alpha : false,\n\t\t_depth = parameters.depth !== undefined ? parameters.depth : true,\n\t\t_stencil = parameters.stencil !== undefined ? parameters.stencil : true,\n\t\t_antialias = parameters.antialias !== undefined ? parameters.antialias : false,\n\t\t_premultipliedAlpha = parameters.premultipliedAlpha !== undefined ? parameters.premultipliedAlpha : true,\n\t\t_preserveDrawingBuffer = parameters.preserveDrawingBuffer !== undefined ? parameters.preserveDrawingBuffer : false,\n\t\t_powerPreference = parameters.powerPreference !== undefined ? parameters.powerPreference : 'default',\n\t\t_failIfMajorPerformanceCaveat = parameters.failIfMajorPerformanceCaveat !== undefined ? parameters.failIfMajorPerformanceCaveat : false;\n\n\tlet currentRenderList = null;\n\tlet currentRenderState = null;\n\n\t// render() can be called from within a callback triggered by another render.\n\t// We track this so that the nested render call gets its state isolated from the parent render call.\n\n\tconst renderStateStack = [];\n\n\t// public properties\n\n\tthis.domElement = _canvas;\n\n\t// Debug configuration container\n\tthis.debug = {\n\n\t\t/**\n\t\t * Enables error checking and reporting when shader programs are being compiled\n\t\t * @type {boolean}\n\t\t */\n\t\tcheckShaderErrors: true\n\t};\n\n\t// clearing\n\n\tthis.autoClear = true;\n\tthis.autoClearColor = true;\n\tthis.autoClearDepth = true;\n\tthis.autoClearStencil = true;\n\n\t// scene graph\n\n\tthis.sortObjects = true;\n\n\t// user-defined clipping\n\n\tthis.clippingPlanes = [];\n\tthis.localClippingEnabled = false;\n\n\t// physically based shading\n\n\tthis.gammaFactor = 2.0;\t// for backwards compatibility\n\tthis.outputEncoding = LinearEncoding;\n\n\t// physical lights\n\n\tthis.physicallyCorrectLights = false;\n\n\t// tone mapping\n\n\tthis.toneMapping = NoToneMapping;\n\tthis.toneMappingExposure = 1.0;\n\n\t// morphs\n\n\tthis.maxMorphTargets = 8;\n\tthis.maxMorphNormals = 4;\n\n\t// internal properties\n\n\tconst _this = this;\n\n\tlet _isContextLost = false;\n\n\t// internal state cache\n\n\tlet _framebuffer = null;\n\n\tlet _currentActiveCubeFace = 0;\n\tlet _currentActiveMipmapLevel = 0;\n\tlet _currentRenderTarget = null;\n\tlet _currentFramebuffer = null;\n\tlet _currentMaterialId = - 1;\n\n\tlet _currentCamera = null;\n\n\tconst _currentViewport = new Vector4();\n\tconst _currentScissor = new Vector4();\n\tlet _currentScissorTest = null;\n\n\t//\n\n\tlet _width = _canvas.width;\n\tlet _height = _canvas.height;\n\n\tlet _pixelRatio = 1;\n\tlet _opaqueSort = null;\n\tlet _transparentSort = null;\n\n\tconst _viewport = new Vector4( 0, 0, _width, _height );\n\tconst _scissor = new Vector4( 0, 0, _width, _height );\n\tlet _scissorTest = false;\n\n\t// frustum\n\n\tconst _frustum = new Frustum();\n\n\t// clipping\n\n\tlet _clippingEnabled = false;\n\tlet _localClippingEnabled = false;\n\n\t// camera matrices cache\n\n\tconst _projScreenMatrix = new Matrix4();\n\n\tconst _vector3 = new Vector3();\n\n\tconst _emptyScene = { background: null, fog: null, environment: null, overrideMaterial: null, isScene: true };\n\n\tfunction getTargetPixelRatio() {\n\n\t\treturn _currentRenderTarget === null ? _pixelRatio : 1;\n\n\t}\n\n\t// initialize\n\n\tlet _gl = _context;\n\n\tfunction getContext( contextNames, contextAttributes ) {\n\n\t\tfor ( let i = 0; i < contextNames.length; i ++ ) {\n\n\t\t\tconst contextName = contextNames[ i ];\n\t\t\tconst context = _canvas.getContext( contextName, contextAttributes );\n\t\t\tif ( context !== null ) return context;\n\n\t\t}\n\n\t\treturn null;\n\n\t}\n\n\ttry {\n\n\t\tconst contextAttributes = {\n\t\t\talpha: _alpha,\n\t\t\tdepth: _depth,\n\t\t\tstencil: _stencil,\n\t\t\tantialias: _antialias,\n\t\t\tpremultipliedAlpha: _premultipliedAlpha,\n\t\t\tpreserveDrawingBuffer: _preserveDrawingBuffer,\n\t\t\tpowerPreference: _powerPreference,\n\t\t\tfailIfMajorPerformanceCaveat: _failIfMajorPerformanceCaveat\n\t\t};\n\n\t\t// event listeners must be registered before WebGL context is created, see #12753\n\n\t\t_canvas.addEventListener( 'webglcontextlost', onContextLost, false );\n\t\t_canvas.addEventListener( 'webglcontextrestored', onContextRestore, false );\n\n\t\tif ( _gl === null ) {\n\n\t\t\tconst contextNames = [ 'webgl2', 'webgl', 'experimental-webgl' ];\n\n\t\t\tif ( _this.isWebGL1Renderer === true ) {\n\n\t\t\t\tcontextNames.shift();\n\n\t\t\t}\n\n\t\t\t_gl = getContext( contextNames, contextAttributes );\n\n\t\t\tif ( _gl === null ) {\n\n\t\t\t\tif ( getContext( contextNames ) ) {\n\n\t\t\t\t\tthrow new Error( 'Error creating WebGL context with your selected attributes.' );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthrow new Error( 'Error creating WebGL context.' );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\t// Some experimental-webgl implementations do not have getShaderPrecisionFormat\n\n\t\tif ( _gl.getShaderPrecisionFormat === undefined ) {\n\n\t\t\t_gl.getShaderPrecisionFormat = function () {\n\n\t\t\t\treturn { 'rangeMin': 1, 'rangeMax': 1, 'precision': 1 };\n\n\t\t\t};\n\n\t\t}\n\n\t} catch ( error ) {\n\n\t\tconsole.error( 'THREE.WebGLRenderer: ' + error.message );\n\t\tthrow error;\n\n\t}\n\n\tlet extensions, capabilities, state, info;\n\tlet properties, textures, cubemaps, attributes, geometries, objects;\n\tlet programCache, materials, renderLists, renderStates, clipping;\n\n\tlet background, morphtargets, bufferRenderer, indexedBufferRenderer;\n\n\tlet utils, bindingStates;\n\n\tfunction initGLContext() {\n\n\t\textensions = new WebGLExtensions( _gl );\n\n\t\tcapabilities = new WebGLCapabilities( _gl, extensions, parameters );\n\n\t\tif ( capabilities.isWebGL2 === false ) {\n\n\t\t\textensions.get( 'WEBGL_depth_texture' );\n\t\t\textensions.get( 'OES_texture_float' );\n\t\t\textensions.get( 'OES_texture_half_float' );\n\t\t\textensions.get( 'OES_texture_half_float_linear' );\n\t\t\textensions.get( 'OES_standard_derivatives' );\n\t\t\textensions.get( 'OES_element_index_uint' );\n\t\t\textensions.get( 'OES_vertex_array_object' );\n\t\t\textensions.get( 'ANGLE_instanced_arrays' );\n\n\t\t}\n\n\t\textensions.get( 'OES_texture_float_linear' );\n\n\t\tutils = new WebGLUtils( _gl, extensions, capabilities );\n\n\t\tstate = new WebGLState( _gl, extensions, capabilities );\n\t\tstate.scissor( _currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ).floor() );\n\t\tstate.viewport( _currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ).floor() );\n\n\t\tinfo = new WebGLInfo( _gl );\n\t\tproperties = new WebGLProperties();\n\t\ttextures = new WebGLTextures( _gl, extensions, state, properties, capabilities, utils, info );\n\t\tcubemaps = new WebGLCubeMaps( _this );\n\t\tattributes = new WebGLAttributes( _gl, capabilities );\n\t\tbindingStates = new WebGLBindingStates( _gl, extensions, attributes, capabilities );\n\t\tgeometries = new WebGLGeometries( _gl, attributes, info, bindingStates );\n\t\tobjects = new WebGLObjects( _gl, geometries, attributes, info );\n\t\tmorphtargets = new WebGLMorphtargets( _gl );\n\t\tclipping = new WebGLClipping( properties );\n\t\tprogramCache = new WebGLPrograms( _this, cubemaps, extensions, capabilities, bindingStates, clipping );\n\t\tmaterials = new WebGLMaterials( properties );\n\t\trenderLists = new WebGLRenderLists( properties );\n\t\trenderStates = new WebGLRenderStates( extensions, capabilities );\n\t\tbackground = new WebGLBackground( _this, cubemaps, state, objects, _premultipliedAlpha );\n\n\t\tbufferRenderer = new WebGLBufferRenderer( _gl, extensions, info, capabilities );\n\t\tindexedBufferRenderer = new WebGLIndexedBufferRenderer( _gl, extensions, info, capabilities );\n\n\t\tinfo.programs = programCache.programs;\n\n\t\t_this.capabilities = capabilities;\n\t\t_this.extensions = extensions;\n\t\t_this.properties = properties;\n\t\t_this.renderLists = renderLists;\n\t\t_this.state = state;\n\t\t_this.info = info;\n\n\t}\n\n\tinitGLContext();\n\n\t// xr\n\n\tconst xr = new WebXRManager( _this, _gl );\n\n\tthis.xr = xr;\n\n\t// shadow map\n\n\tconst shadowMap = new WebGLShadowMap( _this, objects, capabilities.maxTextureSize );\n\n\tthis.shadowMap = shadowMap;\n\n\t// API\n\n\tthis.getContext = function () {\n\n\t\treturn _gl;\n\n\t};\n\n\tthis.getContextAttributes = function () {\n\n\t\treturn _gl.getContextAttributes();\n\n\t};\n\n\tthis.forceContextLoss = function () {\n\n\t\tconst extension = extensions.get( 'WEBGL_lose_context' );\n\t\tif ( extension ) extension.loseContext();\n\n\t};\n\n\tthis.forceContextRestore = function () {\n\n\t\tconst extension = extensions.get( 'WEBGL_lose_context' );\n\t\tif ( extension ) extension.restoreContext();\n\n\t};\n\n\tthis.getPixelRatio = function () {\n\n\t\treturn _pixelRatio;\n\n\t};\n\n\tthis.setPixelRatio = function ( value ) {\n\n\t\tif ( value === undefined ) return;\n\n\t\t_pixelRatio = value;\n\n\t\tthis.setSize( _width, _height, false );\n\n\t};\n\n\tthis.getSize = function ( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'WebGLRenderer: .getsize() now requires a Vector2 as an argument' );\n\n\t\t\ttarget = new Vector2();\n\n\t\t}\n\n\t\treturn target.set( _width, _height );\n\n\t};\n\n\tthis.setSize = function ( width, height, updateStyle ) {\n\n\t\tif ( xr.isPresenting ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: Can\\'t change size while VR device is presenting.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\t_width = width;\n\t\t_height = height;\n\n\t\t_canvas.width = Math.floor( width * _pixelRatio );\n\t\t_canvas.height = Math.floor( height * _pixelRatio );\n\n\t\tif ( updateStyle !== false ) {\n\n\t\t\t_canvas.style.width = width + 'px';\n\t\t\t_canvas.style.height = height + 'px';\n\n\t\t}\n\n\t\tthis.setViewport( 0, 0, width, height );\n\n\t};\n\n\tthis.getDrawingBufferSize = function ( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'WebGLRenderer: .getdrawingBufferSize() now requires a Vector2 as an argument' );\n\n\t\t\ttarget = new Vector2();\n\n\t\t}\n\n\t\treturn target.set( _width * _pixelRatio, _height * _pixelRatio ).floor();\n\n\t};\n\n\tthis.setDrawingBufferSize = function ( width, height, pixelRatio ) {\n\n\t\t_width = width;\n\t\t_height = height;\n\n\t\t_pixelRatio = pixelRatio;\n\n\t\t_canvas.width = Math.floor( width * pixelRatio );\n\t\t_canvas.height = Math.floor( height * pixelRatio );\n\n\t\tthis.setViewport( 0, 0, width, height );\n\n\t};\n\n\tthis.getCurrentViewport = function ( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'WebGLRenderer: .getCurrentViewport() now requires a Vector4 as an argument' );\n\n\t\t\ttarget = new Vector4();\n\n\t\t}\n\n\t\treturn target.copy( _currentViewport );\n\n\t};\n\n\tthis.getViewport = function ( target ) {\n\n\t\treturn target.copy( _viewport );\n\n\t};\n\n\tthis.setViewport = function ( x, y, width, height ) {\n\n\t\tif ( x.isVector4 ) {\n\n\t\t\t_viewport.set( x.x, x.y, x.z, x.w );\n\n\t\t} else {\n\n\t\t\t_viewport.set( x, y, width, height );\n\n\t\t}\n\n\t\tstate.viewport( _currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ).floor() );\n\n\t};\n\n\tthis.getScissor = function ( target ) {\n\n\t\treturn target.copy( _scissor );\n\n\t};\n\n\tthis.setScissor = function ( x, y, width, height ) {\n\n\t\tif ( x.isVector4 ) {\n\n\t\t\t_scissor.set( x.x, x.y, x.z, x.w );\n\n\t\t} else {\n\n\t\t\t_scissor.set( x, y, width, height );\n\n\t\t}\n\n\t\tstate.scissor( _currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ).floor() );\n\n\t};\n\n\tthis.getScissorTest = function () {\n\n\t\treturn _scissorTest;\n\n\t};\n\n\tthis.setScissorTest = function ( boolean ) {\n\n\t\tstate.setScissorTest( _scissorTest = boolean );\n\n\t};\n\n\tthis.setOpaqueSort = function ( method ) {\n\n\t\t_opaqueSort = method;\n\n\t};\n\n\tthis.setTransparentSort = function ( method ) {\n\n\t\t_transparentSort = method;\n\n\t};\n\n\t// Clearing\n\n\tthis.getClearColor = function ( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'WebGLRenderer: .getClearColor() now requires a Color as an argument' );\n\n\t\t\ttarget = new Color();\n\n\t\t}\n\n\t\treturn target.copy( background.getClearColor() );\n\n\t};\n\n\tthis.setClearColor = function () {\n\n\t\tbackground.setClearColor.apply( background, arguments );\n\n\t};\n\n\tthis.getClearAlpha = function () {\n\n\t\treturn background.getClearAlpha();\n\n\t};\n\n\tthis.setClearAlpha = function () {\n\n\t\tbackground.setClearAlpha.apply( background, arguments );\n\n\t};\n\n\tthis.clear = function ( color, depth, stencil ) {\n\n\t\tlet bits = 0;\n\n\t\tif ( color === undefined || color ) bits |= 16384;\n\t\tif ( depth === undefined || depth ) bits |= 256;\n\t\tif ( stencil === undefined || stencil ) bits |= 1024;\n\n\t\t_gl.clear( bits );\n\n\t};\n\n\tthis.clearColor = function () {\n\n\t\tthis.clear( true, false, false );\n\n\t};\n\n\tthis.clearDepth = function () {\n\n\t\tthis.clear( false, true, false );\n\n\t};\n\n\tthis.clearStencil = function () {\n\n\t\tthis.clear( false, false, true );\n\n\t};\n\n\t//\n\n\tthis.dispose = function () {\n\n\t\t_canvas.removeEventListener( 'webglcontextlost', onContextLost, false );\n\t\t_canvas.removeEventListener( 'webglcontextrestored', onContextRestore, false );\n\n\t\trenderLists.dispose();\n\t\trenderStates.dispose();\n\t\tproperties.dispose();\n\t\tcubemaps.dispose();\n\t\tobjects.dispose();\n\t\tbindingStates.dispose();\n\n\t\txr.dispose();\n\n\t\tanimation.stop();\n\n\t};\n\n\t// Events\n\n\tfunction onContextLost( event ) {\n\n\t\tevent.preventDefault();\n\n\t\tconsole.log( 'THREE.WebGLRenderer: Context Lost.' );\n\n\t\t_isContextLost = true;\n\n\t}\n\n\tfunction onContextRestore( /* event */ ) {\n\n\t\tconsole.log( 'THREE.WebGLRenderer: Context Restored.' );\n\n\t\t_isContextLost = false;\n\n\t\tinitGLContext();\n\n\t}\n\n\tfunction onMaterialDispose( event ) {\n\n\t\tconst material = event.target;\n\n\t\tmaterial.removeEventListener( 'dispose', onMaterialDispose );\n\n\t\tdeallocateMaterial( material );\n\n\t}\n\n\t// Buffer deallocation\n\n\tfunction deallocateMaterial( material ) {\n\n\t\treleaseMaterialProgramReference( material );\n\n\t\tproperties.remove( material );\n\n\t}\n\n\n\tfunction releaseMaterialProgramReference( material ) {\n\n\t\tconst programInfo = properties.get( material ).program;\n\n\t\tif ( programInfo !== undefined ) {\n\n\t\t\tprogramCache.releaseProgram( programInfo );\n\n\t\t}\n\n\t}\n\n\t// Buffer rendering\n\n\tfunction renderObjectImmediate( object, program ) {\n\n\t\tobject.render( function ( object ) {\n\n\t\t\t_this.renderBufferImmediate( object, program );\n\n\t\t} );\n\n\t}\n\n\tthis.renderBufferImmediate = function ( object, program ) {\n\n\t\tbindingStates.initAttributes();\n\n\t\tconst buffers = properties.get( object );\n\n\t\tif ( object.hasPositions && ! buffers.position ) buffers.position = _gl.createBuffer();\n\t\tif ( object.hasNormals && ! buffers.normal ) buffers.normal = _gl.createBuffer();\n\t\tif ( object.hasUvs && ! buffers.uv ) buffers.uv = _gl.createBuffer();\n\t\tif ( object.hasColors && ! buffers.color ) buffers.color = _gl.createBuffer();\n\n\t\tconst programAttributes = program.getAttributes();\n\n\t\tif ( object.hasPositions ) {\n\n\t\t\t_gl.bindBuffer( 34962, buffers.position );\n\t\t\t_gl.bufferData( 34962, object.positionArray, 35048 );\n\n\t\t\tbindingStates.enableAttribute( programAttributes.position );\n\t\t\t_gl.vertexAttribPointer( programAttributes.position, 3, 5126, false, 0, 0 );\n\n\t\t}\n\n\t\tif ( object.hasNormals ) {\n\n\t\t\t_gl.bindBuffer( 34962, buffers.normal );\n\t\t\t_gl.bufferData( 34962, object.normalArray, 35048 );\n\n\t\t\tbindingStates.enableAttribute( programAttributes.normal );\n\t\t\t_gl.vertexAttribPointer( programAttributes.normal, 3, 5126, false, 0, 0 );\n\n\t\t}\n\n\t\tif ( object.hasUvs ) {\n\n\t\t\t_gl.bindBuffer( 34962, buffers.uv );\n\t\t\t_gl.bufferData( 34962, object.uvArray, 35048 );\n\n\t\t\tbindingStates.enableAttribute( programAttributes.uv );\n\t\t\t_gl.vertexAttribPointer( programAttributes.uv, 2, 5126, false, 0, 0 );\n\n\t\t}\n\n\t\tif ( object.hasColors ) {\n\n\t\t\t_gl.bindBuffer( 34962, buffers.color );\n\t\t\t_gl.bufferData( 34962, object.colorArray, 35048 );\n\n\t\t\tbindingStates.enableAttribute( programAttributes.color );\n\t\t\t_gl.vertexAttribPointer( programAttributes.color, 3, 5126, false, 0, 0 );\n\n\t\t}\n\n\t\tbindingStates.disableUnusedAttributes();\n\n\t\t_gl.drawArrays( 4, 0, object.count );\n\n\t\tobject.count = 0;\n\n\t};\n\n\tthis.renderBufferDirect = function ( camera, scene, geometry, material, object, group ) {\n\n\t\tif ( scene === null ) scene = _emptyScene; // renderBufferDirect second parameter used to be fog (could be null)\n\n\t\tconst frontFaceCW = ( object.isMesh && object.matrixWorld.determinant() < 0 );\n\n\t\tconst program = setProgram( camera, scene, material, object );\n\n\t\tstate.setMaterial( material, frontFaceCW );\n\n\t\t//\n\n\t\tlet index = geometry.index;\n\t\tconst position = geometry.attributes.position;\n\n\t\t//\n\n\t\tif ( index === null ) {\n\n\t\t\tif ( position === undefined || position.count === 0 ) return;\n\n\t\t} else if ( index.count === 0 ) {\n\n\t\t\treturn;\n\n\t\t}\n\n\t\t//\n\n\t\tlet rangeFactor = 1;\n\n\t\tif ( material.wireframe === true ) {\n\n\t\t\tindex = geometries.getWireframeAttribute( geometry );\n\t\t\trangeFactor = 2;\n\n\t\t}\n\n\t\tif ( material.morphTargets || material.morphNormals ) {\n\n\t\t\tmorphtargets.update( object, geometry, material, program );\n\n\t\t}\n\n\t\tbindingStates.setup( object, material, program, geometry, index );\n\n\t\tlet attribute;\n\t\tlet renderer = bufferRenderer;\n\n\t\tif ( index !== null ) {\n\n\t\t\tattribute = attributes.get( index );\n\n\t\t\trenderer = indexedBufferRenderer;\n\t\t\trenderer.setIndex( attribute );\n\n\t\t}\n\n\t\t//\n\n\t\tconst dataCount = ( index !== null ) ? index.count : position.count;\n\n\t\tconst rangeStart = geometry.drawRange.start * rangeFactor;\n\t\tconst rangeCount = geometry.drawRange.count * rangeFactor;\n\n\t\tconst groupStart = group !== null ? group.start * rangeFactor : 0;\n\t\tconst groupCount = group !== null ? group.count * rangeFactor : Infinity;\n\n\t\tconst drawStart = Math.max( rangeStart, groupStart );\n\t\tconst drawEnd = Math.min( dataCount, rangeStart + rangeCount, groupStart + groupCount ) - 1;\n\n\t\tconst drawCount = Math.max( 0, drawEnd - drawStart + 1 );\n\n\t\tif ( drawCount === 0 ) return;\n\n\t\t//\n\n\t\tif ( object.isMesh ) {\n\n\t\t\tif ( material.wireframe === true ) {\n\n\t\t\t\tstate.setLineWidth( material.wireframeLinewidth * getTargetPixelRatio() );\n\t\t\t\trenderer.setMode( 1 );\n\n\t\t\t} else {\n\n\t\t\t\trenderer.setMode( 4 );\n\n\t\t\t}\n\n\t\t} else if ( object.isLine ) {\n\n\t\t\tlet lineWidth = material.linewidth;\n\n\t\t\tif ( lineWidth === undefined ) lineWidth = 1; // Not using Line*Material\n\n\t\t\tstate.setLineWidth( lineWidth * getTargetPixelRatio() );\n\n\t\t\tif ( object.isLineSegments ) {\n\n\t\t\t\trenderer.setMode( 1 );\n\n\t\t\t} else if ( object.isLineLoop ) {\n\n\t\t\t\trenderer.setMode( 2 );\n\n\t\t\t} else {\n\n\t\t\t\trenderer.setMode( 3 );\n\n\t\t\t}\n\n\t\t} else if ( object.isPoints ) {\n\n\t\t\trenderer.setMode( 0 );\n\n\t\t} else if ( object.isSprite ) {\n\n\t\t\trenderer.setMode( 4 );\n\n\t\t}\n\n\t\tif ( object.isInstancedMesh ) {\n\n\t\t\trenderer.renderInstances( drawStart, drawCount, object.count );\n\n\t\t} else if ( geometry.isInstancedBufferGeometry ) {\n\n\t\t\tconst instanceCount = Math.min( geometry.instanceCount, geometry._maxInstanceCount );\n\n\t\t\trenderer.renderInstances( drawStart, drawCount, instanceCount );\n\n\t\t} else {\n\n\t\t\trenderer.render( drawStart, drawCount );\n\n\t\t}\n\n\t};\n\n\t// Compile\n\n\tthis.compile = function ( scene, camera ) {\n\n\t\tcurrentRenderState = renderStates.get( scene );\n\t\tcurrentRenderState.init();\n\n\t\tscene.traverseVisible( function ( object ) {\n\n\t\t\tif ( object.isLight && object.layers.test( camera.layers ) ) {\n\n\t\t\t\tcurrentRenderState.pushLight( object );\n\n\t\t\t\tif ( object.castShadow ) {\n\n\t\t\t\t\tcurrentRenderState.pushShadow( object );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} );\n\n\t\tcurrentRenderState.setupLights();\n\n\t\tconst compiled = new WeakMap();\n\n\t\tscene.traverse( function ( object ) {\n\n\t\t\tconst material = object.material;\n\n\t\t\tif ( material ) {\n\n\t\t\t\tif ( Array.isArray( material ) ) {\n\n\t\t\t\t\tfor ( let i = 0; i < material.length; i ++ ) {\n\n\t\t\t\t\t\tconst material2 = material[ i ];\n\n\t\t\t\t\t\tif ( compiled.has( material2 ) === false ) {\n\n\t\t\t\t\t\t\tinitMaterial( material2, scene, object );\n\t\t\t\t\t\t\tcompiled.set( material2 );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t} else if ( compiled.has( material ) === false ) {\n\n\t\t\t\t\tinitMaterial( material, scene, object );\n\t\t\t\t\tcompiled.set( material );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} );\n\n\t};\n\n\t// Animation Loop\n\n\tlet onAnimationFrameCallback = null;\n\n\tfunction onAnimationFrame( time ) {\n\n\t\tif ( xr.isPresenting ) return;\n\t\tif ( onAnimationFrameCallback ) onAnimationFrameCallback( time );\n\n\t}\n\n\tconst animation = new WebGLAnimation();\n\tanimation.setAnimationLoop( onAnimationFrame );\n\n\tif ( typeof window !== 'undefined' ) animation.setContext( window );\n\n\tthis.setAnimationLoop = function ( callback ) {\n\n\t\tonAnimationFrameCallback = callback;\n\t\txr.setAnimationLoop( callback );\n\n\t\t( callback === null ) ? animation.stop() : animation.start();\n\n\t};\n\n\t// Rendering\n\n\tthis.render = function ( scene, camera ) {\n\n\t\tlet renderTarget, forceClear;\n\n\t\tif ( arguments[ 2 ] !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer.render(): the renderTarget argument has been removed. Use .setRenderTarget() instead.' );\n\t\t\trenderTarget = arguments[ 2 ];\n\n\t\t}\n\n\t\tif ( arguments[ 3 ] !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer.render(): the forceClear argument has been removed. Use .clear() instead.' );\n\t\t\tforceClear = arguments[ 3 ];\n\n\t\t}\n\n\t\tif ( camera !== undefined && camera.isCamera !== true ) {\n\n\t\t\tconsole.error( 'THREE.WebGLRenderer.render: camera is not an instance of THREE.Camera.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( _isContextLost === true ) return;\n\n\t\t// reset caching for this frame\n\n\t\tbindingStates.resetDefaultState();\n\t\t_currentMaterialId = - 1;\n\t\t_currentCamera = null;\n\n\t\t// update scene graph\n\n\t\tif ( scene.autoUpdate === true ) scene.updateMatrixWorld();\n\n\t\t// update camera matrices and frustum\n\n\t\tif ( camera.parent === null ) camera.updateMatrixWorld();\n\n\t\tif ( xr.enabled === true && xr.isPresenting === true ) {\n\n\t\t\tcamera = xr.getCamera( camera );\n\n\t\t}\n\n\t\t//\n\t\tif ( scene.isScene === true ) scene.onBeforeRender( _this, scene, camera, renderTarget || _currentRenderTarget );\n\n\t\tcurrentRenderState = renderStates.get( scene, renderStateStack.length );\n\t\tcurrentRenderState.init();\n\n\t\trenderStateStack.push( currentRenderState );\n\n\t\t_projScreenMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );\n\t\t_frustum.setFromProjectionMatrix( _projScreenMatrix );\n\n\t\t_localClippingEnabled = this.localClippingEnabled;\n\t\t_clippingEnabled = clipping.init( this.clippingPlanes, _localClippingEnabled, camera );\n\n\t\tcurrentRenderList = renderLists.get( scene, camera );\n\t\tcurrentRenderList.init();\n\n\t\tprojectObject( scene, camera, 0, _this.sortObjects );\n\n\t\tcurrentRenderList.finish();\n\n\t\tif ( _this.sortObjects === true ) {\n\n\t\t\tcurrentRenderList.sort( _opaqueSort, _transparentSort );\n\n\t\t}\n\n\t\t//\n\n\t\tif ( _clippingEnabled === true ) clipping.beginShadows();\n\n\t\tconst shadowsArray = currentRenderState.state.shadowsArray;\n\n\t\tshadowMap.render( shadowsArray, scene, camera );\n\n\t\tcurrentRenderState.setupLights();\n\t\tcurrentRenderState.setupLightsView( camera );\n\n\t\tif ( _clippingEnabled === true ) clipping.endShadows();\n\n\t\t//\n\n\t\tif ( this.info.autoReset === true ) this.info.reset();\n\n\t\tif ( renderTarget !== undefined ) {\n\n\t\t\tthis.setRenderTarget( renderTarget );\n\n\t\t}\n\n\t\t//\n\n\t\tbackground.render( currentRenderList, scene, camera, forceClear );\n\n\t\t// render scene\n\n\t\tconst opaqueObjects = currentRenderList.opaque;\n\t\tconst transparentObjects = currentRenderList.transparent;\n\n\t\tif ( opaqueObjects.length > 0 ) renderObjects( opaqueObjects, scene, camera );\n\t\tif ( transparentObjects.length > 0 ) renderObjects( transparentObjects, scene, camera );\n\n\t\t//\n\n\t\tif ( scene.isScene === true ) scene.onAfterRender( _this, scene, camera );\n\n\t\t//\n\n\t\tif ( _currentRenderTarget !== null ) {\n\n\t\t\t// Generate mipmap if we're using any kind of mipmap filtering\n\n\t\t\ttextures.updateRenderTargetMipmap( _currentRenderTarget );\n\n\t\t\t// resolve multisample renderbuffers to a single-sample texture if necessary\n\n\t\t\ttextures.updateMultisampleRenderTarget( _currentRenderTarget );\n\n\t\t}\n\n\t\t// Ensure depth buffer writing is enabled so it can be cleared on next render\n\n\t\tstate.buffers.depth.setTest( true );\n\t\tstate.buffers.depth.setMask( true );\n\t\tstate.buffers.color.setMask( true );\n\n\t\tstate.setPolygonOffset( false );\n\n\t\t// _gl.finish();\n\n\t\trenderStateStack.pop();\n\t\tif ( renderStateStack.length > 0 ) {\n\n\t\t\tcurrentRenderState = renderStateStack[ renderStateStack.length - 1 ];\n\n\t\t} else {\n\n\t\t\tcurrentRenderState = null;\n\n\t\t}\n\n\t\tcurrentRenderList = null;\n\n\t};\n\n\tfunction projectObject( object, camera, groupOrder, sortObjects ) {\n\n\t\tif ( object.visible === false ) return;\n\n\t\tconst visible = object.layers.test( camera.layers );\n\n\t\tif ( visible ) {\n\n\t\t\tif ( object.isGroup ) {\n\n\t\t\t\tgroupOrder = object.renderOrder;\n\n\t\t\t} else if ( object.isLOD ) {\n\n\t\t\t\tif ( object.autoUpdate === true ) object.update( camera );\n\n\t\t\t} else if ( object.isLight ) {\n\n\t\t\t\tcurrentRenderState.pushLight( object );\n\n\t\t\t\tif ( object.castShadow ) {\n\n\t\t\t\t\tcurrentRenderState.pushShadow( object );\n\n\t\t\t\t}\n\n\t\t\t} else if ( object.isSprite ) {\n\n\t\t\t\tif ( ! object.frustumCulled || _frustum.intersectsSprite( object ) ) {\n\n\t\t\t\t\tif ( sortObjects ) {\n\n\t\t\t\t\t\t_vector3.setFromMatrixPosition( object.matrixWorld )\n\t\t\t\t\t\t\t.applyMatrix4( _projScreenMatrix );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tconst geometry = objects.update( object );\n\t\t\t\t\tconst material = object.material;\n\n\t\t\t\t\tif ( material.visible ) {\n\n\t\t\t\t\t\tcurrentRenderList.push( object, geometry, material, groupOrder, _vector3.z, null );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t} else if ( object.isImmediateRenderObject ) {\n\n\t\t\t\tif ( sortObjects ) {\n\n\t\t\t\t\t_vector3.setFromMatrixPosition( object.matrixWorld )\n\t\t\t\t\t\t.applyMatrix4( _projScreenMatrix );\n\n\t\t\t\t}\n\n\t\t\t\tcurrentRenderList.push( object, null, object.material, groupOrder, _vector3.z, null );\n\n\t\t\t} else if ( object.isMesh || object.isLine || object.isPoints ) {\n\n\t\t\t\tif ( object.isSkinnedMesh ) {\n\n\t\t\t\t\t// update skeleton only once in a frame\n\n\t\t\t\t\tif ( object.skeleton.frame !== info.render.frame ) {\n\n\t\t\t\t\t\tobject.skeleton.update();\n\t\t\t\t\t\tobject.skeleton.frame = info.render.frame;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tif ( ! object.frustumCulled || _frustum.intersectsObject( object ) ) {\n\n\t\t\t\t\tif ( sortObjects ) {\n\n\t\t\t\t\t\t_vector3.setFromMatrixPosition( object.matrixWorld )\n\t\t\t\t\t\t\t.applyMatrix4( _projScreenMatrix );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tconst geometry = objects.update( object );\n\t\t\t\t\tconst material = object.material;\n\n\t\t\t\t\tif ( Array.isArray( material ) ) {\n\n\t\t\t\t\t\tconst groups = geometry.groups;\n\n\t\t\t\t\t\tfor ( let i = 0, l = groups.length; i < l; i ++ ) {\n\n\t\t\t\t\t\t\tconst group = groups[ i ];\n\t\t\t\t\t\t\tconst groupMaterial = material[ group.materialIndex ];\n\n\t\t\t\t\t\t\tif ( groupMaterial && groupMaterial.visible ) {\n\n\t\t\t\t\t\t\t\tcurrentRenderList.push( object, geometry, groupMaterial, groupOrder, _vector3.z, group );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t} else if ( material.visible ) {\n\n\t\t\t\t\t\tcurrentRenderList.push( object, geometry, material, groupOrder, _vector3.z, null );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst children = object.children;\n\n\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\tprojectObject( children[ i ], camera, groupOrder, sortObjects );\n\n\t\t}\n\n\t}\n\n\tfunction renderObjects( renderList, scene, camera ) {\n\n\t\tconst overrideMaterial = scene.isScene === true ? scene.overrideMaterial : null;\n\n\t\tfor ( let i = 0, l = renderList.length; i < l; i ++ ) {\n\n\t\t\tconst renderItem = renderList[ i ];\n\n\t\t\tconst object = renderItem.object;\n\t\t\tconst geometry = renderItem.geometry;\n\t\t\tconst material = overrideMaterial === null ? renderItem.material : overrideMaterial;\n\t\t\tconst group = renderItem.group;\n\n\t\t\tif ( camera.isArrayCamera ) {\n\n\t\t\t\tconst cameras = camera.cameras;\n\n\t\t\t\tfor ( let j = 0, jl = cameras.length; j < jl; j ++ ) {\n\n\t\t\t\t\tconst camera2 = cameras[ j ];\n\n\t\t\t\t\tif ( object.layers.test( camera2.layers ) ) {\n\n\t\t\t\t\t\tstate.viewport( _currentViewport.copy( camera2.viewport ) );\n\n\t\t\t\t\t\tcurrentRenderState.setupLightsView( camera2 );\n\n\t\t\t\t\t\trenderObject( object, scene, camera2, geometry, material, group );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\trenderObject( object, scene, camera, geometry, material, group );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tfunction renderObject( object, scene, camera, geometry, material, group ) {\n\n\t\tobject.onBeforeRender( _this, scene, camera, geometry, material, group );\n\n\t\tobject.modelViewMatrix.multiplyMatrices( camera.matrixWorldInverse, object.matrixWorld );\n\t\tobject.normalMatrix.getNormalMatrix( object.modelViewMatrix );\n\n\t\tif ( object.isImmediateRenderObject ) {\n\n\t\t\tconst program = setProgram( camera, scene, material, object );\n\n\t\t\tstate.setMaterial( material );\n\n\t\t\tbindingStates.reset();\n\n\t\t\trenderObjectImmediate( object, program );\n\n\t\t} else {\n\n\t\t\t_this.renderBufferDirect( camera, scene, geometry, material, object, group );\n\n\t\t}\n\n\t\tobject.onAfterRender( _this, scene, camera, geometry, material, group );\n\n\t}\n\n\tfunction initMaterial( material, scene, object ) {\n\n\t\tif ( scene.isScene !== true ) scene = _emptyScene; // scene could be a Mesh, Line, Points, ...\n\n\t\tconst materialProperties = properties.get( material );\n\n\t\tconst lights = currentRenderState.state.lights;\n\t\tconst shadowsArray = currentRenderState.state.shadowsArray;\n\n\t\tconst lightsStateVersion = lights.state.version;\n\n\t\tconst parameters = programCache.getParameters( material, lights.state, shadowsArray, scene, object );\n\t\tconst programCacheKey = programCache.getProgramCacheKey( parameters );\n\n\t\tlet program = materialProperties.program;\n\t\tlet programChange = true;\n\n\t\tif ( program === undefined ) {\n\n\t\t\t// new material\n\t\t\tmaterial.addEventListener( 'dispose', onMaterialDispose );\n\n\t\t} else if ( program.cacheKey !== programCacheKey ) {\n\n\t\t\t// changed glsl or parameters\n\t\t\treleaseMaterialProgramReference( material );\n\n\t\t} else if ( materialProperties.lightsStateVersion !== lightsStateVersion ) {\n\n\t\t\tprogramChange = false;\n\n\t\t} else if ( parameters.shaderID !== undefined ) {\n\n\t\t\t// same glsl and uniform list, envMap still needs the update here to avoid a frame-late effect\n\n\t\t\tconst environment = material.isMeshStandardMaterial ? scene.environment : null;\n\t\t\tmaterialProperties.envMap = cubemaps.get( material.envMap || environment );\n\n\t\t\treturn;\n\n\t\t} else {\n\n\t\t\t// only rebuild uniform list\n\t\t\tprogramChange = false;\n\n\t\t}\n\n\t\tif ( programChange ) {\n\n\t\t\tparameters.uniforms = programCache.getUniforms( material );\n\n\t\t\tmaterial.onBeforeCompile( parameters, _this );\n\n\t\t\tprogram = programCache.acquireProgram( parameters, programCacheKey );\n\n\t\t\tmaterialProperties.program = program;\n\t\t\tmaterialProperties.uniforms = parameters.uniforms;\n\t\t\tmaterialProperties.outputEncoding = parameters.outputEncoding;\n\n\t\t}\n\n\t\tconst uniforms = materialProperties.uniforms;\n\n\t\tif ( ! material.isShaderMaterial &&\n\t\t\t! material.isRawShaderMaterial ||\n\t\t\tmaterial.clipping === true ) {\n\n\t\t\tmaterialProperties.numClippingPlanes = clipping.numPlanes;\n\t\t\tmaterialProperties.numIntersection = clipping.numIntersection;\n\t\t\tuniforms.clippingPlanes = clipping.uniform;\n\n\t\t}\n\n\t\tmaterialProperties.environment = material.isMeshStandardMaterial ? scene.environment : null;\n\t\tmaterialProperties.fog = scene.fog;\n\t\tmaterialProperties.envMap = cubemaps.get( material.envMap || materialProperties.environment );\n\n\t\t// store the light setup it was created for\n\n\t\tmaterialProperties.needsLights = materialNeedsLights( material );\n\t\tmaterialProperties.lightsStateVersion = lightsStateVersion;\n\n\t\tif ( materialProperties.needsLights ) {\n\n\t\t\t// wire up the material to this renderer's lighting state\n\n\t\t\tuniforms.ambientLightColor.value = lights.state.ambient;\n\t\t\tuniforms.lightProbe.value = lights.state.probe;\n\t\t\tuniforms.directionalLights.value = lights.state.directional;\n\t\t\tuniforms.directionalLightShadows.value = lights.state.directionalShadow;\n\t\t\tuniforms.spotLights.value = lights.state.spot;\n\t\t\tuniforms.spotLightShadows.value = lights.state.spotShadow;\n\t\t\tuniforms.rectAreaLights.value = lights.state.rectArea;\n\t\t\tuniforms.ltc_1.value = lights.state.rectAreaLTC1;\n\t\t\tuniforms.ltc_2.value = lights.state.rectAreaLTC2;\n\t\t\tuniforms.pointLights.value = lights.state.point;\n\t\t\tuniforms.pointLightShadows.value = lights.state.pointShadow;\n\t\t\tuniforms.hemisphereLights.value = lights.state.hemi;\n\n\t\t\tuniforms.directionalShadowMap.value = lights.state.directionalShadowMap;\n\t\t\tuniforms.directionalShadowMatrix.value = lights.state.directionalShadowMatrix;\n\t\t\tuniforms.spotShadowMap.value = lights.state.spotShadowMap;\n\t\t\tuniforms.spotShadowMatrix.value = lights.state.spotShadowMatrix;\n\t\t\tuniforms.pointShadowMap.value = lights.state.pointShadowMap;\n\t\t\tuniforms.pointShadowMatrix.value = lights.state.pointShadowMatrix;\n\t\t\t// TODO (abelnation): add area lights shadow info to uniforms\n\n\t\t}\n\n\t\tconst progUniforms = materialProperties.program.getUniforms();\n\t\tconst uniformsList = WebGLUniforms.seqWithValue( progUniforms.seq, uniforms );\n\n\t\tmaterialProperties.uniformsList = uniformsList;\n\n\t}\n\n\tfunction setProgram( camera, scene, material, object ) {\n\n\t\tif ( scene.isScene !== true ) scene = _emptyScene; // scene could be a Mesh, Line, Points, ...\n\n\t\ttextures.resetTextureUnits();\n\n\t\tconst fog = scene.fog;\n\t\tconst environment = material.isMeshStandardMaterial ? scene.environment : null;\n\t\tconst encoding = ( _currentRenderTarget === null ) ? _this.outputEncoding : _currentRenderTarget.texture.encoding;\n\t\tconst envMap = cubemaps.get( material.envMap || environment );\n\n\t\tconst materialProperties = properties.get( material );\n\t\tconst lights = currentRenderState.state.lights;\n\n\t\tif ( _clippingEnabled === true ) {\n\n\t\t\tif ( _localClippingEnabled === true || camera !== _currentCamera ) {\n\n\t\t\t\tconst useCache =\n\t\t\t\t\tcamera === _currentCamera &&\n\t\t\t\t\tmaterial.id === _currentMaterialId;\n\n\t\t\t\t// we might want to call this function with some ClippingGroup\n\t\t\t\t// object instead of the material, once it becomes feasible\n\t\t\t\t// (#8465, #8379)\n\t\t\t\tclipping.setState( material, camera, useCache );\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( material.version === materialProperties.__version ) {\n\n\t\t\tif ( material.fog && materialProperties.fog !== fog ) {\n\n\t\t\t\tinitMaterial( material, scene, object );\n\n\t\t\t} else if ( materialProperties.environment !== environment ) {\n\n\t\t\t\tinitMaterial( material, scene, object );\n\n\t\t\t} else if ( materialProperties.needsLights && ( materialProperties.lightsStateVersion !== lights.state.version ) ) {\n\n\t\t\t\tinitMaterial( material, scene, object );\n\n\t\t\t} else if ( materialProperties.numClippingPlanes !== undefined &&\n\t\t\t\t( materialProperties.numClippingPlanes !== clipping.numPlanes ||\n\t\t\t\tmaterialProperties.numIntersection !== clipping.numIntersection ) ) {\n\n\t\t\t\tinitMaterial( material, scene, object );\n\n\t\t\t} else if ( materialProperties.outputEncoding !== encoding ) {\n\n\t\t\t\tinitMaterial( material, scene, object );\n\n\t\t\t} else if ( materialProperties.envMap !== envMap ) {\n\n\t\t\t\tinitMaterial( material, scene, object );\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tinitMaterial( material, scene, object );\n\t\t\tmaterialProperties.__version = material.version;\n\n\t\t}\n\n\t\tlet refreshProgram = false;\n\t\tlet refreshMaterial = false;\n\t\tlet refreshLights = false;\n\n\t\tconst program = materialProperties.program,\n\t\t\tp_uniforms = program.getUniforms(),\n\t\t\tm_uniforms = materialProperties.uniforms;\n\n\t\tif ( state.useProgram( program.program ) ) {\n\n\t\t\trefreshProgram = true;\n\t\t\trefreshMaterial = true;\n\t\t\trefreshLights = true;\n\n\t\t}\n\n\t\tif ( material.id !== _currentMaterialId ) {\n\n\t\t\t_currentMaterialId = material.id;\n\n\t\t\trefreshMaterial = true;\n\n\t\t}\n\n\t\tif ( refreshProgram || _currentCamera !== camera ) {\n\n\t\t\tp_uniforms.setValue( _gl, 'projectionMatrix', camera.projectionMatrix );\n\n\t\t\tif ( capabilities.logarithmicDepthBuffer ) {\n\n\t\t\t\tp_uniforms.setValue( _gl, 'logDepthBufFC',\n\t\t\t\t\t2.0 / ( Math.log( camera.far + 1.0 ) / Math.LN2 ) );\n\n\t\t\t}\n\n\t\t\tif ( _currentCamera !== camera ) {\n\n\t\t\t\t_currentCamera = camera;\n\n\t\t\t\t// lighting uniforms depend on the camera so enforce an update\n\t\t\t\t// now, in case this material supports lights - or later, when\n\t\t\t\t// the next material that does gets activated:\n\n\t\t\t\trefreshMaterial = true;\t\t// set to true on material change\n\t\t\t\trefreshLights = true;\t\t// remains set until update done\n\n\t\t\t}\n\n\t\t\t// load material specific uniforms\n\t\t\t// (shader material also gets them for the sake of genericity)\n\n\t\t\tif ( material.isShaderMaterial ||\n\t\t\t\tmaterial.isMeshPhongMaterial ||\n\t\t\t\tmaterial.isMeshToonMaterial ||\n\t\t\t\tmaterial.isMeshStandardMaterial ||\n\t\t\t\tmaterial.envMap ) {\n\n\t\t\t\tconst uCamPos = p_uniforms.map.cameraPosition;\n\n\t\t\t\tif ( uCamPos !== undefined ) {\n\n\t\t\t\t\tuCamPos.setValue( _gl,\n\t\t\t\t\t\t_vector3.setFromMatrixPosition( camera.matrixWorld ) );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( material.isMeshPhongMaterial ||\n\t\t\t\tmaterial.isMeshToonMaterial ||\n\t\t\t\tmaterial.isMeshLambertMaterial ||\n\t\t\t\tmaterial.isMeshBasicMaterial ||\n\t\t\t\tmaterial.isMeshStandardMaterial ||\n\t\t\t\tmaterial.isShaderMaterial ) {\n\n\t\t\t\tp_uniforms.setValue( _gl, 'isOrthographic', camera.isOrthographicCamera === true );\n\n\t\t\t}\n\n\t\t\tif ( material.isMeshPhongMaterial ||\n\t\t\t\tmaterial.isMeshToonMaterial ||\n\t\t\t\tmaterial.isMeshLambertMaterial ||\n\t\t\t\tmaterial.isMeshBasicMaterial ||\n\t\t\t\tmaterial.isMeshStandardMaterial ||\n\t\t\t\tmaterial.isShaderMaterial ||\n\t\t\t\tmaterial.isShadowMaterial ||\n\t\t\t\tmaterial.skinning ) {\n\n\t\t\t\tp_uniforms.setValue( _gl, 'viewMatrix', camera.matrixWorldInverse );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// skinning uniforms must be set even if material didn't change\n\t\t// auto-setting of texture unit for bone texture must go before other textures\n\t\t// otherwise textures used for skinning can take over texture units reserved for other material textures\n\n\t\tif ( material.skinning ) {\n\n\t\t\tp_uniforms.setOptional( _gl, object, 'bindMatrix' );\n\t\t\tp_uniforms.setOptional( _gl, object, 'bindMatrixInverse' );\n\n\t\t\tconst skeleton = object.skeleton;\n\n\t\t\tif ( skeleton ) {\n\n\t\t\t\tconst bones = skeleton.bones;\n\n\t\t\t\tif ( capabilities.floatVertexTextures ) {\n\n\t\t\t\t\tif ( skeleton.boneTexture === null ) {\n\n\t\t\t\t\t\t// layout (1 matrix = 4 pixels)\n\t\t\t\t\t\t//      RGBA RGBA RGBA RGBA (=> column1, column2, column3, column4)\n\t\t\t\t\t\t//  with  8x8  pixel texture max   16 bones * 4 pixels =  (8 * 8)\n\t\t\t\t\t\t//       16x16 pixel texture max   64 bones * 4 pixels = (16 * 16)\n\t\t\t\t\t\t//       32x32 pixel texture max  256 bones * 4 pixels = (32 * 32)\n\t\t\t\t\t\t//       64x64 pixel texture max 1024 bones * 4 pixels = (64 * 64)\n\n\n\t\t\t\t\t\tlet size = Math.sqrt( bones.length * 4 ); // 4 pixels needed for 1 matrix\n\t\t\t\t\t\tsize = MathUtils.ceilPowerOfTwo( size );\n\t\t\t\t\t\tsize = Math.max( size, 4 );\n\n\t\t\t\t\t\tconst boneMatrices = new Float32Array( size * size * 4 ); // 4 floats per RGBA pixel\n\t\t\t\t\t\tboneMatrices.set( skeleton.boneMatrices ); // copy current values\n\n\t\t\t\t\t\tconst boneTexture = new DataTexture( boneMatrices, size, size, RGBAFormat, FloatType );\n\n\t\t\t\t\t\tskeleton.boneMatrices = boneMatrices;\n\t\t\t\t\t\tskeleton.boneTexture = boneTexture;\n\t\t\t\t\t\tskeleton.boneTextureSize = size;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tp_uniforms.setValue( _gl, 'boneTexture', skeleton.boneTexture, textures );\n\t\t\t\t\tp_uniforms.setValue( _gl, 'boneTextureSize', skeleton.boneTextureSize );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tp_uniforms.setOptional( _gl, skeleton, 'boneMatrices' );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( refreshMaterial || materialProperties.receiveShadow !== object.receiveShadow ) {\n\n\t\t\tmaterialProperties.receiveShadow = object.receiveShadow;\n\t\t\tp_uniforms.setValue( _gl, 'receiveShadow', object.receiveShadow );\n\n\t\t}\n\n\t\tif ( refreshMaterial ) {\n\n\t\t\tp_uniforms.setValue( _gl, 'toneMappingExposure', _this.toneMappingExposure );\n\n\t\t\tif ( materialProperties.needsLights ) {\n\n\t\t\t\t// the current material requires lighting info\n\n\t\t\t\t// note: all lighting uniforms are always set correctly\n\t\t\t\t// they simply reference the renderer's state for their\n\t\t\t\t// values\n\t\t\t\t//\n\t\t\t\t// use the current material's .needsUpdate flags to set\n\t\t\t\t// the GL state when required\n\n\t\t\t\tmarkUniformsLightsNeedsUpdate( m_uniforms, refreshLights );\n\n\t\t\t}\n\n\t\t\t// refresh uniforms common to several materials\n\n\t\t\tif ( fog && material.fog ) {\n\n\t\t\t\tmaterials.refreshFogUniforms( m_uniforms, fog );\n\n\t\t\t}\n\n\t\t\tmaterials.refreshMaterialUniforms( m_uniforms, material, _pixelRatio, _height );\n\n\t\t\tWebGLUniforms.upload( _gl, materialProperties.uniformsList, m_uniforms, textures );\n\n\t\t}\n\n\t\tif ( material.isShaderMaterial && material.uniformsNeedUpdate === true ) {\n\n\t\t\tWebGLUniforms.upload( _gl, materialProperties.uniformsList, m_uniforms, textures );\n\t\t\tmaterial.uniformsNeedUpdate = false;\n\n\t\t}\n\n\t\tif ( material.isSpriteMaterial ) {\n\n\t\t\tp_uniforms.setValue( _gl, 'center', object.center );\n\n\t\t}\n\n\t\t// common matrices\n\n\t\tp_uniforms.setValue( _gl, 'modelViewMatrix', object.modelViewMatrix );\n\t\tp_uniforms.setValue( _gl, 'normalMatrix', object.normalMatrix );\n\t\tp_uniforms.setValue( _gl, 'modelMatrix', object.matrixWorld );\n\n\t\treturn program;\n\n\t}\n\n\t// If uniforms are marked as clean, they don't need to be loaded to the GPU.\n\n\tfunction markUniformsLightsNeedsUpdate( uniforms, value ) {\n\n\t\tuniforms.ambientLightColor.needsUpdate = value;\n\t\tuniforms.lightProbe.needsUpdate = value;\n\n\t\tuniforms.directionalLights.needsUpdate = value;\n\t\tuniforms.directionalLightShadows.needsUpdate = value;\n\t\tuniforms.pointLights.needsUpdate = value;\n\t\tuniforms.pointLightShadows.needsUpdate = value;\n\t\tuniforms.spotLights.needsUpdate = value;\n\t\tuniforms.spotLightShadows.needsUpdate = value;\n\t\tuniforms.rectAreaLights.needsUpdate = value;\n\t\tuniforms.hemisphereLights.needsUpdate = value;\n\n\t}\n\n\tfunction materialNeedsLights( material ) {\n\n\t\treturn material.isMeshLambertMaterial || material.isMeshToonMaterial || material.isMeshPhongMaterial ||\n\t\t\tmaterial.isMeshStandardMaterial || material.isShadowMaterial ||\n\t\t\t( material.isShaderMaterial && material.lights === true );\n\n\t}\n\n\t//\n\tthis.setFramebuffer = function ( value ) {\n\n\t\tif ( _framebuffer !== value && _currentRenderTarget === null ) _gl.bindFramebuffer( 36160, value );\n\n\t\t_framebuffer = value;\n\n\t};\n\n\tthis.getActiveCubeFace = function () {\n\n\t\treturn _currentActiveCubeFace;\n\n\t};\n\n\tthis.getActiveMipmapLevel = function () {\n\n\t\treturn _currentActiveMipmapLevel;\n\n\t};\n\n\tthis.getRenderList = function () {\n\n\t\treturn currentRenderList;\n\n\t};\n\n\tthis.setRenderList = function ( renderList ) {\n\n\t\tcurrentRenderList = renderList;\n\n\t};\n\n\tthis.getRenderTarget = function () {\n\n\t\treturn _currentRenderTarget;\n\n\t};\n\n\tthis.setRenderTarget = function ( renderTarget, activeCubeFace = 0, activeMipmapLevel = 0 ) {\n\n\t\t_currentRenderTarget = renderTarget;\n\t\t_currentActiveCubeFace = activeCubeFace;\n\t\t_currentActiveMipmapLevel = activeMipmapLevel;\n\n\t\tif ( renderTarget && properties.get( renderTarget ).__webglFramebuffer === undefined ) {\n\n\t\t\ttextures.setupRenderTarget( renderTarget );\n\n\t\t}\n\n\t\tlet framebuffer = _framebuffer;\n\t\tlet isCube = false;\n\n\t\tif ( renderTarget ) {\n\n\t\t\tconst __webglFramebuffer = properties.get( renderTarget ).__webglFramebuffer;\n\n\t\t\tif ( renderTarget.isWebGLCubeRenderTarget ) {\n\n\t\t\t\tframebuffer = __webglFramebuffer[ activeCubeFace ];\n\t\t\t\tisCube = true;\n\n\t\t\t} else if ( renderTarget.isWebGLMultisampleRenderTarget ) {\n\n\t\t\t\tframebuffer = properties.get( renderTarget ).__webglMultisampledFramebuffer;\n\n\t\t\t} else {\n\n\t\t\t\tframebuffer = __webglFramebuffer;\n\n\t\t\t}\n\n\t\t\t_currentViewport.copy( renderTarget.viewport );\n\t\t\t_currentScissor.copy( renderTarget.scissor );\n\t\t\t_currentScissorTest = renderTarget.scissorTest;\n\n\t\t} else {\n\n\t\t\t_currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ).floor();\n\t\t\t_currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ).floor();\n\t\t\t_currentScissorTest = _scissorTest;\n\n\t\t}\n\n\t\tif ( _currentFramebuffer !== framebuffer ) {\n\n\t\t\t_gl.bindFramebuffer( 36160, framebuffer );\n\t\t\t_currentFramebuffer = framebuffer;\n\n\t\t}\n\n\t\tstate.viewport( _currentViewport );\n\t\tstate.scissor( _currentScissor );\n\t\tstate.setScissorTest( _currentScissorTest );\n\n\t\tif ( isCube ) {\n\n\t\t\tconst textureProperties = properties.get( renderTarget.texture );\n\t\t\t_gl.framebufferTexture2D( 36160, 36064, 34069 + activeCubeFace, textureProperties.__webglTexture, activeMipmapLevel );\n\n\t\t}\n\n\t};\n\n\tthis.readRenderTargetPixels = function ( renderTarget, x, y, width, height, buffer, activeCubeFaceIndex ) {\n\n\t\tif ( ! ( renderTarget && renderTarget.isWebGLRenderTarget ) ) {\n\n\t\t\tconsole.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not THREE.WebGLRenderTarget.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tlet framebuffer = properties.get( renderTarget ).__webglFramebuffer;\n\n\t\tif ( renderTarget.isWebGLCubeRenderTarget && activeCubeFaceIndex !== undefined ) {\n\n\t\t\tframebuffer = framebuffer[ activeCubeFaceIndex ];\n\n\t\t}\n\n\t\tif ( framebuffer ) {\n\n\t\t\tlet restore = false;\n\n\t\t\tif ( framebuffer !== _currentFramebuffer ) {\n\n\t\t\t\t_gl.bindFramebuffer( 36160, framebuffer );\n\n\t\t\t\trestore = true;\n\n\t\t\t}\n\n\t\t\ttry {\n\n\t\t\t\tconst texture = renderTarget.texture;\n\t\t\t\tconst textureFormat = texture.format;\n\t\t\t\tconst textureType = texture.type;\n\n\t\t\t\tif ( textureFormat !== RGBAFormat && utils.convert( textureFormat ) !== _gl.getParameter( 35739 ) ) {\n\n\t\t\t\t\tconsole.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in RGBA or implementation defined format.' );\n\t\t\t\t\treturn;\n\n\t\t\t\t}\n\n\t\t\t\tif ( textureType !== UnsignedByteType && utils.convert( textureType ) !== _gl.getParameter( 35738 ) && // IE11, Edge and Chrome Mac < 52 (#9513)\n\t\t\t\t\t! ( textureType === FloatType && ( capabilities.isWebGL2 || extensions.get( 'OES_texture_float' ) || extensions.get( 'WEBGL_color_buffer_float' ) ) ) && // Chrome Mac >= 52 and Firefox\n\t\t\t\t\t! ( textureType === HalfFloatType && ( capabilities.isWebGL2 ? extensions.get( 'EXT_color_buffer_float' ) : extensions.get( 'EXT_color_buffer_half_float' ) ) ) ) {\n\n\t\t\t\t\tconsole.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in UnsignedByteType or implementation defined type.' );\n\t\t\t\t\treturn;\n\n\t\t\t\t}\n\n\t\t\t\tif ( _gl.checkFramebufferStatus( 36160 ) === 36053 ) {\n\n\t\t\t\t\t// the following if statement ensures valid read requests (no out-of-bounds pixels, see #8604)\n\n\t\t\t\t\tif ( ( x >= 0 && x <= ( renderTarget.width - width ) ) && ( y >= 0 && y <= ( renderTarget.height - height ) ) ) {\n\n\t\t\t\t\t\t_gl.readPixels( x, y, width, height, utils.convert( textureFormat ), utils.convert( textureType ), buffer );\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.error( 'THREE.WebGLRenderer.readRenderTargetPixels: readPixels from renderTarget failed. Framebuffer not complete.' );\n\n\t\t\t\t}\n\n\t\t\t} finally {\n\n\t\t\t\tif ( restore ) {\n\n\t\t\t\t\t_gl.bindFramebuffer( 36160, _currentFramebuffer );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t};\n\n\tthis.copyFramebufferToTexture = function ( position, texture, level = 0 ) {\n\n\t\tconst levelScale = Math.pow( 2, - level );\n\t\tconst width = Math.floor( texture.image.width * levelScale );\n\t\tconst height = Math.floor( texture.image.height * levelScale );\n\t\tconst glFormat = utils.convert( texture.format );\n\n\t\ttextures.setTexture2D( texture, 0 );\n\n\t\t_gl.copyTexImage2D( 3553, level, glFormat, position.x, position.y, width, height, 0 );\n\n\t\tstate.unbindTexture();\n\n\t};\n\n\tthis.copyTextureToTexture = function ( position, srcTexture, dstTexture, level = 0 ) {\n\n\t\tconst width = srcTexture.image.width;\n\t\tconst height = srcTexture.image.height;\n\t\tconst glFormat = utils.convert( dstTexture.format );\n\t\tconst glType = utils.convert( dstTexture.type );\n\n\t\ttextures.setTexture2D( dstTexture, 0 );\n\n\t\t// As another texture upload may have changed pixelStorei\n\t\t// parameters, make sure they are correct for the dstTexture\n\t\t_gl.pixelStorei( 37440, dstTexture.flipY );\n\t\t_gl.pixelStorei( 37441, dstTexture.premultiplyAlpha );\n\t\t_gl.pixelStorei( 3317, dstTexture.unpackAlignment );\n\n\t\tif ( srcTexture.isDataTexture ) {\n\n\t\t\t_gl.texSubImage2D( 3553, level, position.x, position.y, width, height, glFormat, glType, srcTexture.image.data );\n\n\t\t} else {\n\n\t\t\tif ( srcTexture.isCompressedTexture ) {\n\n\t\t\t\t_gl.compressedTexSubImage2D( 3553, level, position.x, position.y, srcTexture.mipmaps[ 0 ].width, srcTexture.mipmaps[ 0 ].height, glFormat, srcTexture.mipmaps[ 0 ].data );\n\n\t\t\t} else {\n\n\t\t\t\t_gl.texSubImage2D( 3553, level, position.x, position.y, glFormat, glType, srcTexture.image );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// Generate mipmaps only when copying level 0\n\t\tif ( level === 0 && dstTexture.generateMipmaps ) _gl.generateMipmap( 3553 );\n\n\t\tstate.unbindTexture();\n\n\t};\n\n\tthis.initTexture = function ( texture ) {\n\n\t\ttextures.setTexture2D( texture, 0 );\n\n\t\tstate.unbindTexture();\n\n\t};\n\n\tthis.resetState = function () {\n\n\t\tstate.reset();\n\t\tbindingStates.reset();\n\n\t};\n\n\tif ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {\n\n\t\t__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) ); // eslint-disable-line no-undef\n\n\t}\n\n}\n\nfunction WebGL1Renderer( parameters ) {\n\n\tWebGLRenderer.call( this, parameters );\n\n}\n\nWebGL1Renderer.prototype = Object.assign( Object.create( WebGLRenderer.prototype ), {\n\n\tconstructor: WebGL1Renderer,\n\n\tisWebGL1Renderer: true\n\n} );\n\nclass FogExp2 {\n\n\tconstructor( color, density ) {\n\n\t\tObject.defineProperty( this, 'isFogExp2', { value: true } );\n\n\t\tthis.name = '';\n\n\t\tthis.color = new Color( color );\n\t\tthis.density = ( density !== undefined ) ? density : 0.00025;\n\n\t}\n\n\tclone() {\n\n\t\treturn new FogExp2( this.color, this.density );\n\n\t}\n\n\ttoJSON( /* meta */ ) {\n\n\t\treturn {\n\t\t\ttype: 'FogExp2',\n\t\t\tcolor: this.color.getHex(),\n\t\t\tdensity: this.density\n\t\t};\n\n\t}\n\n}\n\nclass Fog {\n\n\tconstructor( color, near, far ) {\n\n\t\tObject.defineProperty( this, 'isFog', { value: true } );\n\n\t\tthis.name = '';\n\n\t\tthis.color = new Color( color );\n\n\t\tthis.near = ( near !== undefined ) ? near : 1;\n\t\tthis.far = ( far !== undefined ) ? far : 1000;\n\n\t}\n\n\tclone() {\n\n\t\treturn new Fog( this.color, this.near, this.far );\n\n\t}\n\n\ttoJSON( /* meta */ ) {\n\n\t\treturn {\n\t\t\ttype: 'Fog',\n\t\t\tcolor: this.color.getHex(),\n\t\t\tnear: this.near,\n\t\t\tfar: this.far\n\t\t};\n\n\t}\n\n}\n\nclass Scene extends Object3D {\n\n\tconstructor() {\n\n\t\tsuper();\n\n\t\tObject.defineProperty( this, 'isScene', { value: true } );\n\n\t\tthis.type = 'Scene';\n\n\t\tthis.background = null;\n\t\tthis.environment = null;\n\t\tthis.fog = null;\n\n\t\tthis.overrideMaterial = null;\n\n\t\tthis.autoUpdate = true; // checked by the renderer\n\n\t\tif ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {\n\n\t\t\t__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) ); // eslint-disable-line no-undef\n\n\t\t}\n\n\t}\n\n\tcopy( source, recursive ) {\n\n\t\tsuper.copy( source, recursive );\n\n\t\tif ( source.background !== null ) this.background = source.background.clone();\n\t\tif ( source.environment !== null ) this.environment = source.environment.clone();\n\t\tif ( source.fog !== null ) this.fog = source.fog.clone();\n\n\t\tif ( source.overrideMaterial !== null ) this.overrideMaterial = source.overrideMaterial.clone();\n\n\t\tthis.autoUpdate = source.autoUpdate;\n\t\tthis.matrixAutoUpdate = source.matrixAutoUpdate;\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON( meta ) {\n\n\t\tconst data = super.toJSON( meta );\n\n\t\tif ( this.background !== null ) data.object.background = this.background.toJSON( meta );\n\t\tif ( this.environment !== null ) data.object.environment = this.environment.toJSON( meta );\n\t\tif ( this.fog !== null ) data.object.fog = this.fog.toJSON();\n\n\t\treturn data;\n\n\t}\n\n}\n\nfunction InterleavedBuffer( array, stride ) {\n\n\tthis.array = array;\n\tthis.stride = stride;\n\tthis.count = array !== undefined ? array.length / stride : 0;\n\n\tthis.usage = StaticDrawUsage;\n\tthis.updateRange = { offset: 0, count: - 1 };\n\n\tthis.version = 0;\n\n\tthis.uuid = MathUtils.generateUUID();\n\n}\n\nObject.defineProperty( InterleavedBuffer.prototype, 'needsUpdate', {\n\n\tset: function ( value ) {\n\n\t\tif ( value === true ) this.version ++;\n\n\t}\n\n} );\n\nObject.assign( InterleavedBuffer.prototype, {\n\n\tisInterleavedBuffer: true,\n\n\tonUploadCallback: function () {},\n\n\tsetUsage: function ( value ) {\n\n\t\tthis.usage = value;\n\n\t\treturn this;\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\tthis.array = new source.array.constructor( source.array );\n\t\tthis.count = source.count;\n\t\tthis.stride = source.stride;\n\t\tthis.usage = source.usage;\n\n\t\treturn this;\n\n\t},\n\n\tcopyAt: function ( index1, attribute, index2 ) {\n\n\t\tindex1 *= this.stride;\n\t\tindex2 *= attribute.stride;\n\n\t\tfor ( let i = 0, l = this.stride; i < l; i ++ ) {\n\n\t\t\tthis.array[ index1 + i ] = attribute.array[ index2 + i ];\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tset: function ( value, offset = 0 ) {\n\n\t\tthis.array.set( value, offset );\n\n\t\treturn this;\n\n\t},\n\n\tclone: function ( data ) {\n\n\t\tif ( data.arrayBuffers === undefined ) {\n\n\t\t\tdata.arrayBuffers = {};\n\n\t\t}\n\n\t\tif ( this.array.buffer._uuid === undefined ) {\n\n\t\t\tthis.array.buffer._uuid = MathUtils.generateUUID();\n\n\t\t}\n\n\t\tif ( data.arrayBuffers[ this.array.buffer._uuid ] === undefined ) {\n\n\t\t\tdata.arrayBuffers[ this.array.buffer._uuid ] = this.array.slice( 0 ).buffer;\n\n\t\t}\n\n\t\tconst array = new this.array.constructor( data.arrayBuffers[ this.array.buffer._uuid ] );\n\n\t\tconst ib = new InterleavedBuffer( array, this.stride );\n\t\tib.setUsage( this.usage );\n\n\t\treturn ib;\n\n\t},\n\n\tonUpload: function ( callback ) {\n\n\t\tthis.onUploadCallback = callback;\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function ( data ) {\n\n\t\tif ( data.arrayBuffers === undefined ) {\n\n\t\t\tdata.arrayBuffers = {};\n\n\t\t}\n\n\t\t// generate UUID for array buffer if necessary\n\n\t\tif ( this.array.buffer._uuid === undefined ) {\n\n\t\t\tthis.array.buffer._uuid = MathUtils.generateUUID();\n\n\t\t}\n\n\t\tif ( data.arrayBuffers[ this.array.buffer._uuid ] === undefined ) {\n\n\t\t\tdata.arrayBuffers[ this.array.buffer._uuid ] = Array.prototype.slice.call( new Uint32Array( this.array.buffer ) );\n\n\t\t}\n\n\t\t//\n\n\t\treturn {\n\t\t\tuuid: this.uuid,\n\t\t\tbuffer: this.array.buffer._uuid,\n\t\t\ttype: this.array.constructor.name,\n\t\t\tstride: this.stride\n\t\t};\n\n\t}\n\n} );\n\nconst _vector$6 = new Vector3();\n\nfunction InterleavedBufferAttribute( interleavedBuffer, itemSize, offset, normalized ) {\n\n\tthis.name = '';\n\n\tthis.data = interleavedBuffer;\n\tthis.itemSize = itemSize;\n\tthis.offset = offset;\n\n\tthis.normalized = normalized === true;\n\n}\n\nObject.defineProperties( InterleavedBufferAttribute.prototype, {\n\n\tcount: {\n\n\t\tget: function () {\n\n\t\t\treturn this.data.count;\n\n\t\t}\n\n\t},\n\n\tarray: {\n\n\t\tget: function () {\n\n\t\t\treturn this.data.array;\n\n\t\t}\n\n\t},\n\n\tneedsUpdate: {\n\n\t\tset: function ( value ) {\n\n\t\t\tthis.data.needsUpdate = value;\n\n\t\t}\n\n\t}\n\n} );\n\nObject.assign( InterleavedBufferAttribute.prototype, {\n\n\tisInterleavedBufferAttribute: true,\n\n\tapplyMatrix4: function ( m ) {\n\n\t\tfor ( let i = 0, l = this.data.count; i < l; i ++ ) {\n\n\t\t\t_vector$6.x = this.getX( i );\n\t\t\t_vector$6.y = this.getY( i );\n\t\t\t_vector$6.z = this.getZ( i );\n\n\t\t\t_vector$6.applyMatrix4( m );\n\n\t\t\tthis.setXYZ( i, _vector$6.x, _vector$6.y, _vector$6.z );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tsetX: function ( index, x ) {\n\n\t\tthis.data.array[ index * this.data.stride + this.offset ] = x;\n\n\t\treturn this;\n\n\t},\n\n\tsetY: function ( index, y ) {\n\n\t\tthis.data.array[ index * this.data.stride + this.offset + 1 ] = y;\n\n\t\treturn this;\n\n\t},\n\n\tsetZ: function ( index, z ) {\n\n\t\tthis.data.array[ index * this.data.stride + this.offset + 2 ] = z;\n\n\t\treturn this;\n\n\t},\n\n\tsetW: function ( index, w ) {\n\n\t\tthis.data.array[ index * this.data.stride + this.offset + 3 ] = w;\n\n\t\treturn this;\n\n\t},\n\n\tgetX: function ( index ) {\n\n\t\treturn this.data.array[ index * this.data.stride + this.offset ];\n\n\t},\n\n\tgetY: function ( index ) {\n\n\t\treturn this.data.array[ index * this.data.stride + this.offset + 1 ];\n\n\t},\n\n\tgetZ: function ( index ) {\n\n\t\treturn this.data.array[ index * this.data.stride + this.offset + 2 ];\n\n\t},\n\n\tgetW: function ( index ) {\n\n\t\treturn this.data.array[ index * this.data.stride + this.offset + 3 ];\n\n\t},\n\n\tsetXY: function ( index, x, y ) {\n\n\t\tindex = index * this.data.stride + this.offset;\n\n\t\tthis.data.array[ index + 0 ] = x;\n\t\tthis.data.array[ index + 1 ] = y;\n\n\t\treturn this;\n\n\t},\n\n\tsetXYZ: function ( index, x, y, z ) {\n\n\t\tindex = index * this.data.stride + this.offset;\n\n\t\tthis.data.array[ index + 0 ] = x;\n\t\tthis.data.array[ index + 1 ] = y;\n\t\tthis.data.array[ index + 2 ] = z;\n\n\t\treturn this;\n\n\t},\n\n\tsetXYZW: function ( index, x, y, z, w ) {\n\n\t\tindex = index * this.data.stride + this.offset;\n\n\t\tthis.data.array[ index + 0 ] = x;\n\t\tthis.data.array[ index + 1 ] = y;\n\t\tthis.data.array[ index + 2 ] = z;\n\t\tthis.data.array[ index + 3 ] = w;\n\n\t\treturn this;\n\n\t},\n\n\tclone: function ( data ) {\n\n\t\tif ( data === undefined ) {\n\n\t\t\tconsole.log( 'THREE.InterleavedBufferAttribute.clone(): Cloning an interlaved buffer attribute will deinterleave buffer data.' );\n\n\t\t\tconst array = [];\n\n\t\t\tfor ( let i = 0; i < this.count; i ++ ) {\n\n\t\t\t\tconst index = i * this.data.stride + this.offset;\n\n\t\t\t\tfor ( let j = 0; j < this.itemSize; j ++ ) {\n\n\t\t\t\t\tarray.push( this.data.array[ index + j ] );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\treturn new BufferAttribute( new this.array.constructor( array ), this.itemSize, this.normalized );\n\n\t\t} else {\n\n\t\t\tif ( data.interleavedBuffers === undefined ) {\n\n\t\t\t\tdata.interleavedBuffers = {};\n\n\t\t\t}\n\n\t\t\tif ( data.interleavedBuffers[ this.data.uuid ] === undefined ) {\n\n\t\t\t\tdata.interleavedBuffers[ this.data.uuid ] = this.data.clone( data );\n\n\t\t\t}\n\n\t\t\treturn new InterleavedBufferAttribute( data.interleavedBuffers[ this.data.uuid ], this.itemSize, this.offset, this.normalized );\n\n\t\t}\n\n\t},\n\n\ttoJSON: function ( data ) {\n\n\t\tif ( data === undefined ) {\n\n\t\t\tconsole.log( 'THREE.InterleavedBufferAttribute.toJSON(): Serializing an interlaved buffer attribute will deinterleave buffer data.' );\n\n\t\t\tconst array = [];\n\n\t\t\tfor ( let i = 0; i < this.count; i ++ ) {\n\n\t\t\t\tconst index = i * this.data.stride + this.offset;\n\n\t\t\t\tfor ( let j = 0; j < this.itemSize; j ++ ) {\n\n\t\t\t\t\tarray.push( this.data.array[ index + j ] );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// deinterleave data and save it as an ordinary buffer attribute for now\n\n\t\t\treturn {\n\t\t\t\titemSize: this.itemSize,\n\t\t\t\ttype: this.array.constructor.name,\n\t\t\t\tarray: array,\n\t\t\t\tnormalized: this.normalized\n\t\t\t};\n\n\t\t} else {\n\n\t\t\t// save as true interlaved attribtue\n\n\t\t\tif ( data.interleavedBuffers === undefined ) {\n\n\t\t\t\tdata.interleavedBuffers = {};\n\n\t\t\t}\n\n\t\t\tif ( data.interleavedBuffers[ this.data.uuid ] === undefined ) {\n\n\t\t\t\tdata.interleavedBuffers[ this.data.uuid ] = this.data.toJSON( data );\n\n\t\t\t}\n\n\t\t\treturn {\n\t\t\t\tisInterleavedBufferAttribute: true,\n\t\t\t\titemSize: this.itemSize,\n\t\t\t\tdata: this.data.uuid,\n\t\t\t\toffset: this.offset,\n\t\t\t\tnormalized: this.normalized\n\t\t\t};\n\n\t\t}\n\n\t}\n\n} );\n\n/**\n * parameters = {\n *  color: <hex>,\n *  map: new THREE.Texture( <Image> ),\n *  alphaMap: new THREE.Texture( <Image> ),\n *  rotation: <float>,\n *  sizeAttenuation: <bool>\n * }\n */\n\nfunction SpriteMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.type = 'SpriteMaterial';\n\n\tthis.color = new Color( 0xffffff );\n\n\tthis.map = null;\n\n\tthis.alphaMap = null;\n\n\tthis.rotation = 0;\n\n\tthis.sizeAttenuation = true;\n\n\tthis.transparent = true;\n\n\tthis.setValues( parameters );\n\n}\n\nSpriteMaterial.prototype = Object.create( Material.prototype );\nSpriteMaterial.prototype.constructor = SpriteMaterial;\nSpriteMaterial.prototype.isSpriteMaterial = true;\n\nSpriteMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.color.copy( source.color );\n\n\tthis.map = source.map;\n\n\tthis.alphaMap = source.alphaMap;\n\n\tthis.rotation = source.rotation;\n\n\tthis.sizeAttenuation = source.sizeAttenuation;\n\n\treturn this;\n\n};\n\nlet _geometry;\n\nconst _intersectPoint = new Vector3();\nconst _worldScale = new Vector3();\nconst _mvPosition = new Vector3();\n\nconst _alignedPosition = new Vector2();\nconst _rotatedPosition = new Vector2();\nconst _viewWorldMatrix = new Matrix4();\n\nconst _vA$1 = new Vector3();\nconst _vB$1 = new Vector3();\nconst _vC$1 = new Vector3();\n\nconst _uvA$1 = new Vector2();\nconst _uvB$1 = new Vector2();\nconst _uvC$1 = new Vector2();\n\nfunction Sprite( material ) {\n\n\tObject3D.call( this );\n\n\tthis.type = 'Sprite';\n\n\tif ( _geometry === undefined ) {\n\n\t\t_geometry = new BufferGeometry();\n\n\t\tconst float32Array = new Float32Array( [\n\t\t\t- 0.5, - 0.5, 0, 0, 0,\n\t\t\t0.5, - 0.5, 0, 1, 0,\n\t\t\t0.5, 0.5, 0, 1, 1,\n\t\t\t- 0.5, 0.5, 0, 0, 1\n\t\t] );\n\n\t\tconst interleavedBuffer = new InterleavedBuffer( float32Array, 5 );\n\n\t\t_geometry.setIndex( [ 0, 1, 2,\t0, 2, 3 ] );\n\t\t_geometry.setAttribute( 'position', new InterleavedBufferAttribute( interleavedBuffer, 3, 0, false ) );\n\t\t_geometry.setAttribute( 'uv', new InterleavedBufferAttribute( interleavedBuffer, 2, 3, false ) );\n\n\t}\n\n\tthis.geometry = _geometry;\n\tthis.material = ( material !== undefined ) ? material : new SpriteMaterial();\n\n\tthis.center = new Vector2( 0.5, 0.5 );\n\n}\n\nSprite.prototype = Object.assign( Object.create( Object3D.prototype ), {\n\n\tconstructor: Sprite,\n\n\tisSprite: true,\n\n\traycast: function ( raycaster, intersects ) {\n\n\t\tif ( raycaster.camera === null ) {\n\n\t\t\tconsole.error( 'THREE.Sprite: \"Raycaster.camera\" needs to be set in order to raycast against sprites.' );\n\n\t\t}\n\n\t\t_worldScale.setFromMatrixScale( this.matrixWorld );\n\n\t\t_viewWorldMatrix.copy( raycaster.camera.matrixWorld );\n\t\tthis.modelViewMatrix.multiplyMatrices( raycaster.camera.matrixWorldInverse, this.matrixWorld );\n\n\t\t_mvPosition.setFromMatrixPosition( this.modelViewMatrix );\n\n\t\tif ( raycaster.camera.isPerspectiveCamera && this.material.sizeAttenuation === false ) {\n\n\t\t\t_worldScale.multiplyScalar( - _mvPosition.z );\n\n\t\t}\n\n\t\tconst rotation = this.material.rotation;\n\t\tlet sin, cos;\n\n\t\tif ( rotation !== 0 ) {\n\n\t\t\tcos = Math.cos( rotation );\n\t\t\tsin = Math.sin( rotation );\n\n\t\t}\n\n\t\tconst center = this.center;\n\n\t\ttransformVertex( _vA$1.set( - 0.5, - 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );\n\t\ttransformVertex( _vB$1.set( 0.5, - 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );\n\t\ttransformVertex( _vC$1.set( 0.5, 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );\n\n\t\t_uvA$1.set( 0, 0 );\n\t\t_uvB$1.set( 1, 0 );\n\t\t_uvC$1.set( 1, 1 );\n\n\t\t// check first triangle\n\t\tlet intersect = raycaster.ray.intersectTriangle( _vA$1, _vB$1, _vC$1, false, _intersectPoint );\n\n\t\tif ( intersect === null ) {\n\n\t\t\t// check second triangle\n\t\t\ttransformVertex( _vB$1.set( - 0.5, 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );\n\t\t\t_uvB$1.set( 0, 1 );\n\n\t\t\tintersect = raycaster.ray.intersectTriangle( _vA$1, _vC$1, _vB$1, false, _intersectPoint );\n\t\t\tif ( intersect === null ) {\n\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst distance = raycaster.ray.origin.distanceTo( _intersectPoint );\n\n\t\tif ( distance < raycaster.near || distance > raycaster.far ) return;\n\n\t\tintersects.push( {\n\n\t\t\tdistance: distance,\n\t\t\tpoint: _intersectPoint.clone(),\n\t\t\tuv: Triangle.getUV( _intersectPoint, _vA$1, _vB$1, _vC$1, _uvA$1, _uvB$1, _uvC$1, new Vector2() ),\n\t\t\tface: null,\n\t\t\tobject: this\n\n\t\t} );\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\tObject3D.prototype.copy.call( this, source );\n\n\t\tif ( source.center !== undefined ) this.center.copy( source.center );\n\n\t\tthis.material = source.material;\n\n\t\treturn this;\n\n\t}\n\n} );\n\nfunction transformVertex( vertexPosition, mvPosition, center, scale, sin, cos ) {\n\n\t// compute position in camera space\n\t_alignedPosition.subVectors( vertexPosition, center ).addScalar( 0.5 ).multiply( scale );\n\n\t// to check if rotation is not zero\n\tif ( sin !== undefined ) {\n\n\t\t_rotatedPosition.x = ( cos * _alignedPosition.x ) - ( sin * _alignedPosition.y );\n\t\t_rotatedPosition.y = ( sin * _alignedPosition.x ) + ( cos * _alignedPosition.y );\n\n\t} else {\n\n\t\t_rotatedPosition.copy( _alignedPosition );\n\n\t}\n\n\n\tvertexPosition.copy( mvPosition );\n\tvertexPosition.x += _rotatedPosition.x;\n\tvertexPosition.y += _rotatedPosition.y;\n\n\t// transform to world space\n\tvertexPosition.applyMatrix4( _viewWorldMatrix );\n\n}\n\nconst _v1$4 = new Vector3();\nconst _v2$2 = new Vector3();\n\nfunction LOD() {\n\n\tObject3D.call( this );\n\n\tthis._currentLevel = 0;\n\n\tthis.type = 'LOD';\n\n\tObject.defineProperties( this, {\n\t\tlevels: {\n\t\t\tenumerable: true,\n\t\t\tvalue: []\n\t\t}\n\t} );\n\n\tthis.autoUpdate = true;\n\n}\n\nLOD.prototype = Object.assign( Object.create( Object3D.prototype ), {\n\n\tconstructor: LOD,\n\n\tisLOD: true,\n\n\tcopy: function ( source ) {\n\n\t\tObject3D.prototype.copy.call( this, source, false );\n\n\t\tconst levels = source.levels;\n\n\t\tfor ( let i = 0, l = levels.length; i < l; i ++ ) {\n\n\t\t\tconst level = levels[ i ];\n\n\t\t\tthis.addLevel( level.object.clone(), level.distance );\n\n\t\t}\n\n\t\tthis.autoUpdate = source.autoUpdate;\n\n\t\treturn this;\n\n\t},\n\n\taddLevel: function ( object, distance = 0 ) {\n\n\t\tdistance = Math.abs( distance );\n\n\t\tconst levels = this.levels;\n\n\t\tlet l;\n\n\t\tfor ( l = 0; l < levels.length; l ++ ) {\n\n\t\t\tif ( distance < levels[ l ].distance ) {\n\n\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t}\n\n\t\tlevels.splice( l, 0, { distance: distance, object: object } );\n\n\t\tthis.add( object );\n\n\t\treturn this;\n\n\t},\n\n\tgetCurrentLevel: function () {\n\n\t\treturn this._currentLevel;\n\n\t},\n\n\tgetObjectForDistance: function ( distance ) {\n\n\t\tconst levels = this.levels;\n\n\t\tif ( levels.length > 0 ) {\n\n\t\t\tlet i, l;\n\n\t\t\tfor ( i = 1, l = levels.length; i < l; i ++ ) {\n\n\t\t\t\tif ( distance < levels[ i ].distance ) {\n\n\t\t\t\t\tbreak;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\treturn levels[ i - 1 ].object;\n\n\t\t}\n\n\t\treturn null;\n\n\t},\n\n\traycast: function ( raycaster, intersects ) {\n\n\t\tconst levels = this.levels;\n\n\t\tif ( levels.length > 0 ) {\n\n\t\t\t_v1$4.setFromMatrixPosition( this.matrixWorld );\n\n\t\t\tconst distance = raycaster.ray.origin.distanceTo( _v1$4 );\n\n\t\t\tthis.getObjectForDistance( distance ).raycast( raycaster, intersects );\n\n\t\t}\n\n\t},\n\n\tupdate: function ( camera ) {\n\n\t\tconst levels = this.levels;\n\n\t\tif ( levels.length > 1 ) {\n\n\t\t\t_v1$4.setFromMatrixPosition( camera.matrixWorld );\n\t\t\t_v2$2.setFromMatrixPosition( this.matrixWorld );\n\n\t\t\tconst distance = _v1$4.distanceTo( _v2$2 ) / camera.zoom;\n\n\t\t\tlevels[ 0 ].object.visible = true;\n\n\t\t\tlet i, l;\n\n\t\t\tfor ( i = 1, l = levels.length; i < l; i ++ ) {\n\n\t\t\t\tif ( distance >= levels[ i ].distance ) {\n\n\t\t\t\t\tlevels[ i - 1 ].object.visible = false;\n\t\t\t\t\tlevels[ i ].object.visible = true;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tbreak;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tthis._currentLevel = i - 1;\n\n\t\t\tfor ( ; i < l; i ++ ) {\n\n\t\t\t\tlevels[ i ].object.visible = false;\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\ttoJSON: function ( meta ) {\n\n\t\tconst data = Object3D.prototype.toJSON.call( this, meta );\n\n\t\tif ( this.autoUpdate === false ) data.object.autoUpdate = false;\n\n\t\tdata.object.levels = [];\n\n\t\tconst levels = this.levels;\n\n\t\tfor ( let i = 0, l = levels.length; i < l; i ++ ) {\n\n\t\t\tconst level = levels[ i ];\n\n\t\t\tdata.object.levels.push( {\n\t\t\t\tobject: level.object.uuid,\n\t\t\t\tdistance: level.distance\n\t\t\t} );\n\n\t\t}\n\n\t\treturn data;\n\n\t}\n\n} );\n\nconst _basePosition = new Vector3();\n\nconst _skinIndex = new Vector4();\nconst _skinWeight = new Vector4();\n\nconst _vector$7 = new Vector3();\nconst _matrix$1 = new Matrix4();\n\nfunction SkinnedMesh( geometry, material ) {\n\n\tif ( geometry && geometry.isGeometry ) {\n\n\t\tconsole.error( 'THREE.SkinnedMesh no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.' );\n\n\t}\n\n\tMesh.call( this, geometry, material );\n\n\tthis.type = 'SkinnedMesh';\n\n\tthis.bindMode = 'attached';\n\tthis.bindMatrix = new Matrix4();\n\tthis.bindMatrixInverse = new Matrix4();\n\n}\n\nSkinnedMesh.prototype = Object.assign( Object.create( Mesh.prototype ), {\n\n\tconstructor: SkinnedMesh,\n\n\tisSkinnedMesh: true,\n\n\tcopy: function ( source ) {\n\n\t\tMesh.prototype.copy.call( this, source );\n\n\t\tthis.bindMode = source.bindMode;\n\t\tthis.bindMatrix.copy( source.bindMatrix );\n\t\tthis.bindMatrixInverse.copy( source.bindMatrixInverse );\n\n\t\tthis.skeleton = source.skeleton;\n\n\t\treturn this;\n\n\t},\n\n\tbind: function ( skeleton, bindMatrix ) {\n\n\t\tthis.skeleton = skeleton;\n\n\t\tif ( bindMatrix === undefined ) {\n\n\t\t\tthis.updateMatrixWorld( true );\n\n\t\t\tthis.skeleton.calculateInverses();\n\n\t\t\tbindMatrix = this.matrixWorld;\n\n\t\t}\n\n\t\tthis.bindMatrix.copy( bindMatrix );\n\t\tthis.bindMatrixInverse.copy( bindMatrix ).invert();\n\n\t},\n\n\tpose: function () {\n\n\t\tthis.skeleton.pose();\n\n\t},\n\n\tnormalizeSkinWeights: function () {\n\n\t\tconst vector = new Vector4();\n\n\t\tconst skinWeight = this.geometry.attributes.skinWeight;\n\n\t\tfor ( let i = 0, l = skinWeight.count; i < l; i ++ ) {\n\n\t\t\tvector.x = skinWeight.getX( i );\n\t\t\tvector.y = skinWeight.getY( i );\n\t\t\tvector.z = skinWeight.getZ( i );\n\t\t\tvector.w = skinWeight.getW( i );\n\n\t\t\tconst scale = 1.0 / vector.manhattanLength();\n\n\t\t\tif ( scale !== Infinity ) {\n\n\t\t\t\tvector.multiplyScalar( scale );\n\n\t\t\t} else {\n\n\t\t\t\tvector.set( 1, 0, 0, 0 ); // do something reasonable\n\n\t\t\t}\n\n\t\t\tskinWeight.setXYZW( i, vector.x, vector.y, vector.z, vector.w );\n\n\t\t}\n\n\t},\n\n\tupdateMatrixWorld: function ( force ) {\n\n\t\tMesh.prototype.updateMatrixWorld.call( this, force );\n\n\t\tif ( this.bindMode === 'attached' ) {\n\n\t\t\tthis.bindMatrixInverse.copy( this.matrixWorld ).invert();\n\n\t\t} else if ( this.bindMode === 'detached' ) {\n\n\t\t\tthis.bindMatrixInverse.copy( this.bindMatrix ).invert();\n\n\t\t} else {\n\n\t\t\tconsole.warn( 'THREE.SkinnedMesh: Unrecognized bindMode: ' + this.bindMode );\n\n\t\t}\n\n\t},\n\n\tboneTransform: function ( index, target ) {\n\n\t\tconst skeleton = this.skeleton;\n\t\tconst geometry = this.geometry;\n\n\t\t_skinIndex.fromBufferAttribute( geometry.attributes.skinIndex, index );\n\t\t_skinWeight.fromBufferAttribute( geometry.attributes.skinWeight, index );\n\n\t\t_basePosition.fromBufferAttribute( geometry.attributes.position, index ).applyMatrix4( this.bindMatrix );\n\n\t\ttarget.set( 0, 0, 0 );\n\n\t\tfor ( let i = 0; i < 4; i ++ ) {\n\n\t\t\tconst weight = _skinWeight.getComponent( i );\n\n\t\t\tif ( weight !== 0 ) {\n\n\t\t\t\tconst boneIndex = _skinIndex.getComponent( i );\n\n\t\t\t\t_matrix$1.multiplyMatrices( skeleton.bones[ boneIndex ].matrixWorld, skeleton.boneInverses[ boneIndex ] );\n\n\t\t\t\ttarget.addScaledVector( _vector$7.copy( _basePosition ).applyMatrix4( _matrix$1 ), weight );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn target.applyMatrix4( this.bindMatrixInverse );\n\n\t}\n\n} );\n\nfunction Bone() {\n\n\tObject3D.call( this );\n\n\tthis.type = 'Bone';\n\n}\n\nBone.prototype = Object.assign( Object.create( Object3D.prototype ), {\n\n\tconstructor: Bone,\n\n\tisBone: true\n\n} );\n\nconst _offsetMatrix = new Matrix4();\nconst _identityMatrix = new Matrix4();\n\nfunction Skeleton( bones = [], boneInverses = [] ) {\n\n\tthis.uuid = MathUtils.generateUUID();\n\n\tthis.bones = bones.slice( 0 );\n\tthis.boneInverses = boneInverses;\n\tthis.boneMatrices = null;\n\n\tthis.boneTexture = null;\n\tthis.boneTextureSize = 0;\n\n\tthis.frame = - 1;\n\n\tthis.init();\n\n}\n\nObject.assign( Skeleton.prototype, {\n\n\tinit: function () {\n\n\t\tconst bones = this.bones;\n\t\tconst boneInverses = this.boneInverses;\n\n\t\tthis.boneMatrices = new Float32Array( bones.length * 16 );\n\n\t\t// calculate inverse bone matrices if necessary\n\n\t\tif ( boneInverses.length === 0 ) {\n\n\t\t\tthis.calculateInverses();\n\n\t\t} else {\n\n\t\t\t// handle special case\n\n\t\t\tif ( bones.length !== boneInverses.length ) {\n\n\t\t\t\tconsole.warn( 'THREE.Skeleton: Number of inverse bone matrices does not match amount of bones.' );\n\n\t\t\t\tthis.boneInverses = [];\n\n\t\t\t\tfor ( let i = 0, il = this.bones.length; i < il; i ++ ) {\n\n\t\t\t\t\tthis.boneInverses.push( new Matrix4() );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\tcalculateInverses: function () {\n\n\t\tthis.boneInverses.length = 0;\n\n\t\tfor ( let i = 0, il = this.bones.length; i < il; i ++ ) {\n\n\t\t\tconst inverse = new Matrix4();\n\n\t\t\tif ( this.bones[ i ] ) {\n\n\t\t\t\tinverse.copy( this.bones[ i ].matrixWorld ).invert();\n\n\t\t\t}\n\n\t\t\tthis.boneInverses.push( inverse );\n\n\t\t}\n\n\t},\n\n\tpose: function () {\n\n\t\t// recover the bind-time world matrices\n\n\t\tfor ( let i = 0, il = this.bones.length; i < il; i ++ ) {\n\n\t\t\tconst bone = this.bones[ i ];\n\n\t\t\tif ( bone ) {\n\n\t\t\t\tbone.matrixWorld.copy( this.boneInverses[ i ] ).invert();\n\n\t\t\t}\n\n\t\t}\n\n\t\t// compute the local matrices, positions, rotations and scales\n\n\t\tfor ( let i = 0, il = this.bones.length; i < il; i ++ ) {\n\n\t\t\tconst bone = this.bones[ i ];\n\n\t\t\tif ( bone ) {\n\n\t\t\t\tif ( bone.parent && bone.parent.isBone ) {\n\n\t\t\t\t\tbone.matrix.copy( bone.parent.matrixWorld ).invert();\n\t\t\t\t\tbone.matrix.multiply( bone.matrixWorld );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tbone.matrix.copy( bone.matrixWorld );\n\n\t\t\t\t}\n\n\t\t\t\tbone.matrix.decompose( bone.position, bone.quaternion, bone.scale );\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\tupdate: function () {\n\n\t\tconst bones = this.bones;\n\t\tconst boneInverses = this.boneInverses;\n\t\tconst boneMatrices = this.boneMatrices;\n\t\tconst boneTexture = this.boneTexture;\n\n\t\t// flatten bone matrices to array\n\n\t\tfor ( let i = 0, il = bones.length; i < il; i ++ ) {\n\n\t\t\t// compute the offset between the current and the original transform\n\n\t\t\tconst matrix = bones[ i ] ? bones[ i ].matrixWorld : _identityMatrix;\n\n\t\t\t_offsetMatrix.multiplyMatrices( matrix, boneInverses[ i ] );\n\t\t\t_offsetMatrix.toArray( boneMatrices, i * 16 );\n\n\t\t}\n\n\t\tif ( boneTexture !== null ) {\n\n\t\t\tboneTexture.needsUpdate = true;\n\n\t\t}\n\n\t},\n\n\tclone: function () {\n\n\t\treturn new Skeleton( this.bones, this.boneInverses );\n\n\t},\n\n\tgetBoneByName: function ( name ) {\n\n\t\tfor ( let i = 0, il = this.bones.length; i < il; i ++ ) {\n\n\t\t\tconst bone = this.bones[ i ];\n\n\t\t\tif ( bone.name === name ) {\n\n\t\t\t\treturn bone;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn undefined;\n\n\t},\n\n\tdispose: function ( ) {\n\n\t\tif ( this.boneTexture !== null ) {\n\n\t\t\tthis.boneTexture.dispose();\n\n\t\t\tthis.boneTexture = null;\n\n\t\t}\n\n\t},\n\n\tfromJSON: function ( json, bones ) {\n\n\t\tthis.uuid = json.uuid;\n\n\t\tfor ( let i = 0, l = json.bones.length; i < l; i ++ ) {\n\n\t\t\tconst uuid = json.bones[ i ];\n\t\t\tlet bone = bones[ uuid ];\n\n\t\t\tif ( bone === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.Skeleton: No bone found with UUID:', uuid );\n\t\t\t\tbone = new Bone();\n\n\t\t\t}\n\n\t\t\tthis.bones.push( bone );\n\t\t\tthis.boneInverses.push( new Matrix4().fromArray( json.boneInverses[ i ] ) );\n\n\t\t}\n\n\t\tthis.init();\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function () {\n\n\t\tconst data = {\n\t\t\tmetadata: {\n\t\t\t\tversion: 4.5,\n\t\t\t\ttype: 'Skeleton',\n\t\t\t\tgenerator: 'Skeleton.toJSON'\n\t\t\t},\n\t\t\tbones: [],\n\t\t\tboneInverses: []\n\t\t};\n\n\t\tdata.uuid = this.uuid;\n\n\t\tconst bones = this.bones;\n\t\tconst boneInverses = this.boneInverses;\n\n\t\tfor ( let i = 0, l = bones.length; i < l; i ++ ) {\n\n\t\t\tconst bone = bones[ i ];\n\t\t\tdata.bones.push( bone.uuid );\n\n\t\t\tconst boneInverse = boneInverses[ i ];\n\t\t\tdata.boneInverses.push( boneInverse.toArray() );\n\n\t\t}\n\n\t\treturn data;\n\n\t}\n\n} );\n\nconst _instanceLocalMatrix = new Matrix4();\nconst _instanceWorldMatrix = new Matrix4();\n\nconst _instanceIntersects = [];\n\nconst _mesh = new Mesh();\n\nfunction InstancedMesh( geometry, material, count ) {\n\n\tMesh.call( this, geometry, material );\n\n\tthis.instanceMatrix = new BufferAttribute( new Float32Array( count * 16 ), 16 );\n\tthis.instanceColor = null;\n\n\tthis.count = count;\n\n\tthis.frustumCulled = false;\n\n}\n\nInstancedMesh.prototype = Object.assign( Object.create( Mesh.prototype ), {\n\n\tconstructor: InstancedMesh,\n\n\tisInstancedMesh: true,\n\n\tcopy: function ( source ) {\n\n\t\tMesh.prototype.copy.call( this, source );\n\n\t\tthis.instanceMatrix.copy( source.instanceMatrix );\n\t\tthis.count = source.count;\n\n\t\treturn this;\n\n\t},\n\n\tgetColorAt: function ( index, color ) {\n\n\t\tcolor.fromArray( this.instanceColor.array, index * 3 );\n\n\t},\n\n\tgetMatrixAt: function ( index, matrix ) {\n\n\t\tmatrix.fromArray( this.instanceMatrix.array, index * 16 );\n\n\t},\n\n\traycast: function ( raycaster, intersects ) {\n\n\t\tconst matrixWorld = this.matrixWorld;\n\t\tconst raycastTimes = this.count;\n\n\t\t_mesh.geometry = this.geometry;\n\t\t_mesh.material = this.material;\n\n\t\tif ( _mesh.material === undefined ) return;\n\n\t\tfor ( let instanceId = 0; instanceId < raycastTimes; instanceId ++ ) {\n\n\t\t\t// calculate the world matrix for each instance\n\n\t\t\tthis.getMatrixAt( instanceId, _instanceLocalMatrix );\n\n\t\t\t_instanceWorldMatrix.multiplyMatrices( matrixWorld, _instanceLocalMatrix );\n\n\t\t\t// the mesh represents this single instance\n\n\t\t\t_mesh.matrixWorld = _instanceWorldMatrix;\n\n\t\t\t_mesh.raycast( raycaster, _instanceIntersects );\n\n\t\t\t// process the result of raycast\n\n\t\t\tfor ( let i = 0, l = _instanceIntersects.length; i < l; i ++ ) {\n\n\t\t\t\tconst intersect = _instanceIntersects[ i ];\n\t\t\t\tintersect.instanceId = instanceId;\n\t\t\t\tintersect.object = this;\n\t\t\t\tintersects.push( intersect );\n\n\t\t\t}\n\n\t\t\t_instanceIntersects.length = 0;\n\n\t\t}\n\n\t},\n\n\tsetColorAt: function ( index, color ) {\n\n\t\tif ( this.instanceColor === null ) {\n\n\t\t\tthis.instanceColor = new BufferAttribute( new Float32Array( this.count * 3 ), 3 );\n\n\t\t}\n\n\t\tcolor.toArray( this.instanceColor.array, index * 3 );\n\n\t},\n\n\tsetMatrixAt: function ( index, matrix ) {\n\n\t\tmatrix.toArray( this.instanceMatrix.array, index * 16 );\n\n\t},\n\n\tupdateMorphTargets: function () {\n\n\t},\n\n\tdispose: function () {\n\n\t\tthis.dispatchEvent( { type: 'dispose' } );\n\n\t}\n\n} );\n\n/**\n * parameters = {\n *  color: <hex>,\n *  opacity: <float>,\n *\n *  linewidth: <float>,\n *  linecap: \"round\",\n *  linejoin: \"round\"\n * }\n */\n\nfunction LineBasicMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.type = 'LineBasicMaterial';\n\n\tthis.color = new Color( 0xffffff );\n\n\tthis.linewidth = 1;\n\tthis.linecap = 'round';\n\tthis.linejoin = 'round';\n\n\tthis.morphTargets = false;\n\n\tthis.setValues( parameters );\n\n}\n\nLineBasicMaterial.prototype = Object.create( Material.prototype );\nLineBasicMaterial.prototype.constructor = LineBasicMaterial;\n\nLineBasicMaterial.prototype.isLineBasicMaterial = true;\n\nLineBasicMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.color.copy( source.color );\n\n\tthis.linewidth = source.linewidth;\n\tthis.linecap = source.linecap;\n\tthis.linejoin = source.linejoin;\n\n\tthis.morphTargets = source.morphTargets;\n\n\treturn this;\n\n};\n\nconst _start = new Vector3();\nconst _end = new Vector3();\nconst _inverseMatrix$1 = new Matrix4();\nconst _ray$1 = new Ray();\nconst _sphere$2 = new Sphere();\n\nfunction Line( geometry = new BufferGeometry(), material = new LineBasicMaterial() ) {\n\n\tObject3D.call( this );\n\n\tthis.type = 'Line';\n\n\tthis.geometry = geometry;\n\tthis.material = material;\n\n\tthis.updateMorphTargets();\n\n}\n\nLine.prototype = Object.assign( Object.create( Object3D.prototype ), {\n\n\tconstructor: Line,\n\n\tisLine: true,\n\n\tcopy: function ( source ) {\n\n\t\tObject3D.prototype.copy.call( this, source );\n\n\t\tthis.material = source.material;\n\t\tthis.geometry = source.geometry;\n\n\t\treturn this;\n\n\t},\n\n\tcomputeLineDistances: function () {\n\n\t\tconst geometry = this.geometry;\n\n\t\tif ( geometry.isBufferGeometry ) {\n\n\t\t\t// we assume non-indexed geometry\n\n\t\t\tif ( geometry.index === null ) {\n\n\t\t\t\tconst positionAttribute = geometry.attributes.position;\n\t\t\t\tconst lineDistances = [ 0 ];\n\n\t\t\t\tfor ( let i = 1, l = positionAttribute.count; i < l; i ++ ) {\n\n\t\t\t\t\t_start.fromBufferAttribute( positionAttribute, i - 1 );\n\t\t\t\t\t_end.fromBufferAttribute( positionAttribute, i );\n\n\t\t\t\t\tlineDistances[ i ] = lineDistances[ i - 1 ];\n\t\t\t\t\tlineDistances[ i ] += _start.distanceTo( _end );\n\n\t\t\t\t}\n\n\t\t\t\tgeometry.setAttribute( 'lineDistance', new Float32BufferAttribute( lineDistances, 1 ) );\n\n\t\t\t} else {\n\n\t\t\t\tconsole.warn( 'THREE.Line.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.' );\n\n\t\t\t}\n\n\t\t} else if ( geometry.isGeometry ) {\n\n\t\t\tconst vertices = geometry.vertices;\n\t\t\tconst lineDistances = geometry.lineDistances;\n\n\t\t\tlineDistances[ 0 ] = 0;\n\n\t\t\tfor ( let i = 1, l = vertices.length; i < l; i ++ ) {\n\n\t\t\t\tlineDistances[ i ] = lineDistances[ i - 1 ];\n\t\t\t\tlineDistances[ i ] += vertices[ i - 1 ].distanceTo( vertices[ i ] );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\traycast: function ( raycaster, intersects ) {\n\n\t\tconst geometry = this.geometry;\n\t\tconst matrixWorld = this.matrixWorld;\n\t\tconst threshold = raycaster.params.Line.threshold;\n\n\t\t// Checking boundingSphere distance to ray\n\n\t\tif ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();\n\n\t\t_sphere$2.copy( geometry.boundingSphere );\n\t\t_sphere$2.applyMatrix4( matrixWorld );\n\t\t_sphere$2.radius += threshold;\n\n\t\tif ( raycaster.ray.intersectsSphere( _sphere$2 ) === false ) return;\n\n\t\t//\n\n\t\t_inverseMatrix$1.copy( matrixWorld ).invert();\n\t\t_ray$1.copy( raycaster.ray ).applyMatrix4( _inverseMatrix$1 );\n\n\t\tconst localThreshold = threshold / ( ( this.scale.x + this.scale.y + this.scale.z ) / 3 );\n\t\tconst localThresholdSq = localThreshold * localThreshold;\n\n\t\tconst vStart = new Vector3();\n\t\tconst vEnd = new Vector3();\n\t\tconst interSegment = new Vector3();\n\t\tconst interRay = new Vector3();\n\t\tconst step = this.isLineSegments ? 2 : 1;\n\n\t\tif ( geometry.isBufferGeometry ) {\n\n\t\t\tconst index = geometry.index;\n\t\t\tconst attributes = geometry.attributes;\n\t\t\tconst positionAttribute = attributes.position;\n\n\t\t\tif ( index !== null ) {\n\n\t\t\t\tconst indices = index.array;\n\n\t\t\t\tfor ( let i = 0, l = indices.length - 1; i < l; i += step ) {\n\n\t\t\t\t\tconst a = indices[ i ];\n\t\t\t\t\tconst b = indices[ i + 1 ];\n\n\t\t\t\t\tvStart.fromBufferAttribute( positionAttribute, a );\n\t\t\t\t\tvEnd.fromBufferAttribute( positionAttribute, b );\n\n\t\t\t\t\tconst distSq = _ray$1.distanceSqToSegment( vStart, vEnd, interRay, interSegment );\n\n\t\t\t\t\tif ( distSq > localThresholdSq ) continue;\n\n\t\t\t\t\tinterRay.applyMatrix4( this.matrixWorld ); //Move back to world space for distance calculation\n\n\t\t\t\t\tconst distance = raycaster.ray.origin.distanceTo( interRay );\n\n\t\t\t\t\tif ( distance < raycaster.near || distance > raycaster.far ) continue;\n\n\t\t\t\t\tintersects.push( {\n\n\t\t\t\t\t\tdistance: distance,\n\t\t\t\t\t\t// What do we want? intersection point on the ray or on the segment??\n\t\t\t\t\t\t// point: raycaster.ray.at( distance ),\n\t\t\t\t\t\tpoint: interSegment.clone().applyMatrix4( this.matrixWorld ),\n\t\t\t\t\t\tindex: i,\n\t\t\t\t\t\tface: null,\n\t\t\t\t\t\tfaceIndex: null,\n\t\t\t\t\t\tobject: this\n\n\t\t\t\t\t} );\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tfor ( let i = 0, l = positionAttribute.count - 1; i < l; i += step ) {\n\n\t\t\t\t\tvStart.fromBufferAttribute( positionAttribute, i );\n\t\t\t\t\tvEnd.fromBufferAttribute( positionAttribute, i + 1 );\n\n\t\t\t\t\tconst distSq = _ray$1.distanceSqToSegment( vStart, vEnd, interRay, interSegment );\n\n\t\t\t\t\tif ( distSq > localThresholdSq ) continue;\n\n\t\t\t\t\tinterRay.applyMatrix4( this.matrixWorld ); //Move back to world space for distance calculation\n\n\t\t\t\t\tconst distance = raycaster.ray.origin.distanceTo( interRay );\n\n\t\t\t\t\tif ( distance < raycaster.near || distance > raycaster.far ) continue;\n\n\t\t\t\t\tintersects.push( {\n\n\t\t\t\t\t\tdistance: distance,\n\t\t\t\t\t\t// What do we want? intersection point on the ray or on the segment??\n\t\t\t\t\t\t// point: raycaster.ray.at( distance ),\n\t\t\t\t\t\tpoint: interSegment.clone().applyMatrix4( this.matrixWorld ),\n\t\t\t\t\t\tindex: i,\n\t\t\t\t\t\tface: null,\n\t\t\t\t\t\tfaceIndex: null,\n\t\t\t\t\t\tobject: this\n\n\t\t\t\t\t} );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else if ( geometry.isGeometry ) {\n\n\t\t\tconst vertices = geometry.vertices;\n\t\t\tconst nbVertices = vertices.length;\n\n\t\t\tfor ( let i = 0; i < nbVertices - 1; i += step ) {\n\n\t\t\t\tconst distSq = _ray$1.distanceSqToSegment( vertices[ i ], vertices[ i + 1 ], interRay, interSegment );\n\n\t\t\t\tif ( distSq > localThresholdSq ) continue;\n\n\t\t\t\tinterRay.applyMatrix4( this.matrixWorld ); //Move back to world space for distance calculation\n\n\t\t\t\tconst distance = raycaster.ray.origin.distanceTo( interRay );\n\n\t\t\t\tif ( distance < raycaster.near || distance > raycaster.far ) continue;\n\n\t\t\t\tintersects.push( {\n\n\t\t\t\t\tdistance: distance,\n\t\t\t\t\t// What do we want? intersection point on the ray or on the segment??\n\t\t\t\t\t// point: raycaster.ray.at( distance ),\n\t\t\t\t\tpoint: interSegment.clone().applyMatrix4( this.matrixWorld ),\n\t\t\t\t\tindex: i,\n\t\t\t\t\tface: null,\n\t\t\t\t\tfaceIndex: null,\n\t\t\t\t\tobject: this\n\n\t\t\t\t} );\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\tupdateMorphTargets: function () {\n\n\t\tconst geometry = this.geometry;\n\n\t\tif ( geometry.isBufferGeometry ) {\n\n\t\t\tconst morphAttributes = geometry.morphAttributes;\n\t\t\tconst keys = Object.keys( morphAttributes );\n\n\t\t\tif ( keys.length > 0 ) {\n\n\t\t\t\tconst morphAttribute = morphAttributes[ keys[ 0 ] ];\n\n\t\t\t\tif ( morphAttribute !== undefined ) {\n\n\t\t\t\t\tthis.morphTargetInfluences = [];\n\t\t\t\t\tthis.morphTargetDictionary = {};\n\n\t\t\t\t\tfor ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {\n\n\t\t\t\t\t\tconst name = morphAttribute[ m ].name || String( m );\n\n\t\t\t\t\t\tthis.morphTargetInfluences.push( 0 );\n\t\t\t\t\t\tthis.morphTargetDictionary[ name ] = m;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tconst morphTargets = geometry.morphTargets;\n\n\t\t\tif ( morphTargets !== undefined && morphTargets.length > 0 ) {\n\n\t\t\t\tconsole.error( 'THREE.Line.updateMorphTargets() does not support THREE.Geometry. Use THREE.BufferGeometry instead.' );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n} );\n\nconst _start$1 = new Vector3();\nconst _end$1 = new Vector3();\n\nfunction LineSegments( geometry, material ) {\n\n\tLine.call( this, geometry, material );\n\n\tthis.type = 'LineSegments';\n\n}\n\nLineSegments.prototype = Object.assign( Object.create( Line.prototype ), {\n\n\tconstructor: LineSegments,\n\n\tisLineSegments: true,\n\n\tcomputeLineDistances: function () {\n\n\t\tconst geometry = this.geometry;\n\n\t\tif ( geometry.isBufferGeometry ) {\n\n\t\t\t// we assume non-indexed geometry\n\n\t\t\tif ( geometry.index === null ) {\n\n\t\t\t\tconst positionAttribute = geometry.attributes.position;\n\t\t\t\tconst lineDistances = [];\n\n\t\t\t\tfor ( let i = 0, l = positionAttribute.count; i < l; i += 2 ) {\n\n\t\t\t\t\t_start$1.fromBufferAttribute( positionAttribute, i );\n\t\t\t\t\t_end$1.fromBufferAttribute( positionAttribute, i + 1 );\n\n\t\t\t\t\tlineDistances[ i ] = ( i === 0 ) ? 0 : lineDistances[ i - 1 ];\n\t\t\t\t\tlineDistances[ i + 1 ] = lineDistances[ i ] + _start$1.distanceTo( _end$1 );\n\n\t\t\t\t}\n\n\t\t\t\tgeometry.setAttribute( 'lineDistance', new Float32BufferAttribute( lineDistances, 1 ) );\n\n\t\t\t} else {\n\n\t\t\t\tconsole.warn( 'THREE.LineSegments.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.' );\n\n\t\t\t}\n\n\t\t} else if ( geometry.isGeometry ) {\n\n\t\t\tconst vertices = geometry.vertices;\n\t\t\tconst lineDistances = geometry.lineDistances;\n\n\t\t\tfor ( let i = 0, l = vertices.length; i < l; i += 2 ) {\n\n\t\t\t\t_start$1.copy( vertices[ i ] );\n\t\t\t\t_end$1.copy( vertices[ i + 1 ] );\n\n\t\t\t\tlineDistances[ i ] = ( i === 0 ) ? 0 : lineDistances[ i - 1 ];\n\t\t\t\tlineDistances[ i + 1 ] = lineDistances[ i ] + _start$1.distanceTo( _end$1 );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n} );\n\nfunction LineLoop( geometry, material ) {\n\n\tLine.call( this, geometry, material );\n\n\tthis.type = 'LineLoop';\n\n}\n\nLineLoop.prototype = Object.assign( Object.create( Line.prototype ), {\n\n\tconstructor: LineLoop,\n\n\tisLineLoop: true,\n\n} );\n\n/**\n * parameters = {\n *  color: <hex>,\n *  opacity: <float>,\n *  map: new THREE.Texture( <Image> ),\n *  alphaMap: new THREE.Texture( <Image> ),\n *\n *  size: <float>,\n *  sizeAttenuation: <bool>\n *\n *  morphTargets: <bool>\n * }\n */\n\nfunction PointsMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.type = 'PointsMaterial';\n\n\tthis.color = new Color( 0xffffff );\n\n\tthis.map = null;\n\n\tthis.alphaMap = null;\n\n\tthis.size = 1;\n\tthis.sizeAttenuation = true;\n\n\tthis.morphTargets = false;\n\n\tthis.setValues( parameters );\n\n}\n\nPointsMaterial.prototype = Object.create( Material.prototype );\nPointsMaterial.prototype.constructor = PointsMaterial;\n\nPointsMaterial.prototype.isPointsMaterial = true;\n\nPointsMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.color.copy( source.color );\n\n\tthis.map = source.map;\n\n\tthis.alphaMap = source.alphaMap;\n\n\tthis.size = source.size;\n\tthis.sizeAttenuation = source.sizeAttenuation;\n\n\tthis.morphTargets = source.morphTargets;\n\n\treturn this;\n\n};\n\nconst _inverseMatrix$2 = new Matrix4();\nconst _ray$2 = new Ray();\nconst _sphere$3 = new Sphere();\nconst _position$1 = new Vector3();\n\nfunction Points( geometry = new BufferGeometry(), material = new PointsMaterial() ) {\n\n\tObject3D.call( this );\n\n\tthis.type = 'Points';\n\n\tthis.geometry = geometry;\n\tthis.material = material;\n\n\tthis.updateMorphTargets();\n\n}\n\nPoints.prototype = Object.assign( Object.create( Object3D.prototype ), {\n\n\tconstructor: Points,\n\n\tisPoints: true,\n\n\tcopy: function ( source ) {\n\n\t\tObject3D.prototype.copy.call( this, source );\n\n\t\tthis.material = source.material;\n\t\tthis.geometry = source.geometry;\n\n\t\treturn this;\n\n\t},\n\n\traycast: function ( raycaster, intersects ) {\n\n\t\tconst geometry = this.geometry;\n\t\tconst matrixWorld = this.matrixWorld;\n\t\tconst threshold = raycaster.params.Points.threshold;\n\n\t\t// Checking boundingSphere distance to ray\n\n\t\tif ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();\n\n\t\t_sphere$3.copy( geometry.boundingSphere );\n\t\t_sphere$3.applyMatrix4( matrixWorld );\n\t\t_sphere$3.radius += threshold;\n\n\t\tif ( raycaster.ray.intersectsSphere( _sphere$3 ) === false ) return;\n\n\t\t//\n\n\t\t_inverseMatrix$2.copy( matrixWorld ).invert();\n\t\t_ray$2.copy( raycaster.ray ).applyMatrix4( _inverseMatrix$2 );\n\n\t\tconst localThreshold = threshold / ( ( this.scale.x + this.scale.y + this.scale.z ) / 3 );\n\t\tconst localThresholdSq = localThreshold * localThreshold;\n\n\t\tif ( geometry.isBufferGeometry ) {\n\n\t\t\tconst index = geometry.index;\n\t\t\tconst attributes = geometry.attributes;\n\t\t\tconst positionAttribute = attributes.position;\n\n\t\t\tif ( index !== null ) {\n\n\t\t\t\tconst indices = index.array;\n\n\t\t\t\tfor ( let i = 0, il = indices.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst a = indices[ i ];\n\n\t\t\t\t\t_position$1.fromBufferAttribute( positionAttribute, a );\n\n\t\t\t\t\ttestPoint( _position$1, a, localThresholdSq, matrixWorld, raycaster, intersects, this );\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tfor ( let i = 0, l = positionAttribute.count; i < l; i ++ ) {\n\n\t\t\t\t\t_position$1.fromBufferAttribute( positionAttribute, i );\n\n\t\t\t\t\ttestPoint( _position$1, i, localThresholdSq, matrixWorld, raycaster, intersects, this );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tconst vertices = geometry.vertices;\n\n\t\t\tfor ( let i = 0, l = vertices.length; i < l; i ++ ) {\n\n\t\t\t\ttestPoint( vertices[ i ], i, localThresholdSq, matrixWorld, raycaster, intersects, this );\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\tupdateMorphTargets: function () {\n\n\t\tconst geometry = this.geometry;\n\n\t\tif ( geometry.isBufferGeometry ) {\n\n\t\t\tconst morphAttributes = geometry.morphAttributes;\n\t\t\tconst keys = Object.keys( morphAttributes );\n\n\t\t\tif ( keys.length > 0 ) {\n\n\t\t\t\tconst morphAttribute = morphAttributes[ keys[ 0 ] ];\n\n\t\t\t\tif ( morphAttribute !== undefined ) {\n\n\t\t\t\t\tthis.morphTargetInfluences = [];\n\t\t\t\t\tthis.morphTargetDictionary = {};\n\n\t\t\t\t\tfor ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {\n\n\t\t\t\t\t\tconst name = morphAttribute[ m ].name || String( m );\n\n\t\t\t\t\t\tthis.morphTargetInfluences.push( 0 );\n\t\t\t\t\t\tthis.morphTargetDictionary[ name ] = m;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tconst morphTargets = geometry.morphTargets;\n\n\t\t\tif ( morphTargets !== undefined && morphTargets.length > 0 ) {\n\n\t\t\t\tconsole.error( 'THREE.Points.updateMorphTargets() does not support THREE.Geometry. Use THREE.BufferGeometry instead.' );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n} );\n\nfunction testPoint( point, index, localThresholdSq, matrixWorld, raycaster, intersects, object ) {\n\n\tconst rayPointDistanceSq = _ray$2.distanceSqToPoint( point );\n\n\tif ( rayPointDistanceSq < localThresholdSq ) {\n\n\t\tconst intersectPoint = new Vector3();\n\n\t\t_ray$2.closestPointToPoint( point, intersectPoint );\n\t\tintersectPoint.applyMatrix4( matrixWorld );\n\n\t\tconst distance = raycaster.ray.origin.distanceTo( intersectPoint );\n\n\t\tif ( distance < raycaster.near || distance > raycaster.far ) return;\n\n\t\tintersects.push( {\n\n\t\t\tdistance: distance,\n\t\t\tdistanceToRay: Math.sqrt( rayPointDistanceSq ),\n\t\t\tpoint: intersectPoint,\n\t\t\tindex: index,\n\t\t\tface: null,\n\t\t\tobject: object\n\n\t\t} );\n\n\t}\n\n}\n\nfunction VideoTexture( video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {\n\n\tTexture.call( this, video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );\n\n\tthis.format = format !== undefined ? format : RGBFormat;\n\n\tthis.minFilter = minFilter !== undefined ? minFilter : LinearFilter;\n\tthis.magFilter = magFilter !== undefined ? magFilter : LinearFilter;\n\n\tthis.generateMipmaps = false;\n\n\tconst scope = this;\n\n\tfunction updateVideo() {\n\n\t\tscope.needsUpdate = true;\n\t\tvideo.requestVideoFrameCallback( updateVideo );\n\n\t}\n\n\tif ( 'requestVideoFrameCallback' in video ) {\n\n\t\tvideo.requestVideoFrameCallback( updateVideo );\n\n\t}\n\n}\n\nVideoTexture.prototype = Object.assign( Object.create( Texture.prototype ), {\n\n\tconstructor: VideoTexture,\n\n\tclone: function () {\n\n\t\treturn new this.constructor( this.image ).copy( this );\n\n\t},\n\n\tisVideoTexture: true,\n\n\tupdate: function () {\n\n\t\tconst video = this.image;\n\t\tconst hasVideoFrameCallback = 'requestVideoFrameCallback' in video;\n\n\t\tif ( hasVideoFrameCallback === false && video.readyState >= video.HAVE_CURRENT_DATA ) {\n\n\t\t\tthis.needsUpdate = true;\n\n\t\t}\n\n\t}\n\n} );\n\nfunction CompressedTexture( mipmaps, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, encoding ) {\n\n\tTexture.call( this, null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );\n\n\tthis.image = { width: width, height: height };\n\tthis.mipmaps = mipmaps;\n\n\t// no flipping for cube textures\n\t// (also flipping doesn't work for compressed textures )\n\n\tthis.flipY = false;\n\n\t// can't generate mipmaps for compressed textures\n\t// mips must be embedded in DDS files\n\n\tthis.generateMipmaps = false;\n\n}\n\nCompressedTexture.prototype = Object.create( Texture.prototype );\nCompressedTexture.prototype.constructor = CompressedTexture;\n\nCompressedTexture.prototype.isCompressedTexture = true;\n\nfunction CanvasTexture( canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {\n\n\tTexture.call( this, canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );\n\n\tthis.needsUpdate = true;\n\n}\n\nCanvasTexture.prototype = Object.create( Texture.prototype );\nCanvasTexture.prototype.constructor = CanvasTexture;\nCanvasTexture.prototype.isCanvasTexture = true;\n\nfunction DepthTexture( width, height, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, format ) {\n\n\tformat = format !== undefined ? format : DepthFormat;\n\n\tif ( format !== DepthFormat && format !== DepthStencilFormat ) {\n\n\t\tthrow new Error( 'DepthTexture format must be either THREE.DepthFormat or THREE.DepthStencilFormat' );\n\n\t}\n\n\tif ( type === undefined && format === DepthFormat ) type = UnsignedShortType;\n\tif ( type === undefined && format === DepthStencilFormat ) type = UnsignedInt248Type;\n\n\tTexture.call( this, null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );\n\n\tthis.image = { width: width, height: height };\n\n\tthis.magFilter = magFilter !== undefined ? magFilter : NearestFilter;\n\tthis.minFilter = minFilter !== undefined ? minFilter : NearestFilter;\n\n\tthis.flipY = false;\n\tthis.generateMipmaps = false;\n\n}\n\nDepthTexture.prototype = Object.create( Texture.prototype );\nDepthTexture.prototype.constructor = DepthTexture;\nDepthTexture.prototype.isDepthTexture = true;\n\nlet _geometryId = 0; // Geometry uses even numbers as Id\nconst _m1$3 = new Matrix4();\nconst _obj$1 = new Object3D();\nconst _offset$1 = new Vector3();\n\nfunction Geometry() {\n\n\tObject.defineProperty( this, 'id', { value: _geometryId += 2 } );\n\n\tthis.uuid = MathUtils.generateUUID();\n\n\tthis.name = '';\n\tthis.type = 'Geometry';\n\n\tthis.vertices = [];\n\tthis.colors = [];\n\tthis.faces = [];\n\tthis.faceVertexUvs = [[]];\n\n\tthis.morphTargets = [];\n\tthis.morphNormals = [];\n\n\tthis.skinWeights = [];\n\tthis.skinIndices = [];\n\n\tthis.lineDistances = [];\n\n\tthis.boundingBox = null;\n\tthis.boundingSphere = null;\n\n\t// update flags\n\n\tthis.elementsNeedUpdate = false;\n\tthis.verticesNeedUpdate = false;\n\tthis.uvsNeedUpdate = false;\n\tthis.normalsNeedUpdate = false;\n\tthis.colorsNeedUpdate = false;\n\tthis.lineDistancesNeedUpdate = false;\n\tthis.groupsNeedUpdate = false;\n\n}\n\nGeometry.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {\n\n\tconstructor: Geometry,\n\n\tisGeometry: true,\n\n\tapplyMatrix4: function ( matrix ) {\n\n\t\tconst normalMatrix = new Matrix3().getNormalMatrix( matrix );\n\n\t\tfor ( let i = 0, il = this.vertices.length; i < il; i ++ ) {\n\n\t\t\tconst vertex = this.vertices[ i ];\n\t\t\tvertex.applyMatrix4( matrix );\n\n\t\t}\n\n\t\tfor ( let i = 0, il = this.faces.length; i < il; i ++ ) {\n\n\t\t\tconst face = this.faces[ i ];\n\t\t\tface.normal.applyMatrix3( normalMatrix ).normalize();\n\n\t\t\tfor ( let j = 0, jl = face.vertexNormals.length; j < jl; j ++ ) {\n\n\t\t\t\tface.vertexNormals[ j ].applyMatrix3( normalMatrix ).normalize();\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( this.boundingBox !== null ) {\n\n\t\t\tthis.computeBoundingBox();\n\n\t\t}\n\n\t\tif ( this.boundingSphere !== null ) {\n\n\t\t\tthis.computeBoundingSphere();\n\n\t\t}\n\n\t\tthis.verticesNeedUpdate = true;\n\t\tthis.normalsNeedUpdate = true;\n\n\t\treturn this;\n\n\t},\n\n\trotateX: function ( angle ) {\n\n\t\t// rotate geometry around world x-axis\n\n\t\t_m1$3.makeRotationX( angle );\n\n\t\tthis.applyMatrix4( _m1$3 );\n\n\t\treturn this;\n\n\t},\n\n\trotateY: function ( angle ) {\n\n\t\t// rotate geometry around world y-axis\n\n\t\t_m1$3.makeRotationY( angle );\n\n\t\tthis.applyMatrix4( _m1$3 );\n\n\t\treturn this;\n\n\t},\n\n\trotateZ: function ( angle ) {\n\n\t\t// rotate geometry around world z-axis\n\n\t\t_m1$3.makeRotationZ( angle );\n\n\t\tthis.applyMatrix4( _m1$3 );\n\n\t\treturn this;\n\n\t},\n\n\ttranslate: function ( x, y, z ) {\n\n\t\t// translate geometry\n\n\t\t_m1$3.makeTranslation( x, y, z );\n\n\t\tthis.applyMatrix4( _m1$3 );\n\n\t\treturn this;\n\n\t},\n\n\tscale: function ( x, y, z ) {\n\n\t\t// scale geometry\n\n\t\t_m1$3.makeScale( x, y, z );\n\n\t\tthis.applyMatrix4( _m1$3 );\n\n\t\treturn this;\n\n\t},\n\n\tlookAt: function ( vector ) {\n\n\t\t_obj$1.lookAt( vector );\n\n\t\t_obj$1.updateMatrix();\n\n\t\tthis.applyMatrix4( _obj$1.matrix );\n\n\t\treturn this;\n\n\t},\n\n\tfromBufferGeometry: function ( geometry ) {\n\n\t\tconst scope = this;\n\n\t\tconst index = geometry.index !== null ? geometry.index : undefined;\n\t\tconst attributes = geometry.attributes;\n\n\t\tif ( attributes.position === undefined ) {\n\n\t\t\tconsole.error( 'THREE.Geometry.fromBufferGeometry(): Position attribute required for conversion.' );\n\t\t\treturn this;\n\n\t\t}\n\n\t\tconst position = attributes.position;\n\t\tconst normal = attributes.normal;\n\t\tconst color = attributes.color;\n\t\tconst uv = attributes.uv;\n\t\tconst uv2 = attributes.uv2;\n\n\t\tif ( uv2 !== undefined ) this.faceVertexUvs[ 1 ] = [];\n\n\t\tfor ( let i = 0; i < position.count; i ++ ) {\n\n\t\t\tscope.vertices.push( new Vector3().fromBufferAttribute( position, i ) );\n\n\t\t\tif ( color !== undefined ) {\n\n\t\t\t\tscope.colors.push( new Color().fromBufferAttribute( color, i ) );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction addFace( a, b, c, materialIndex ) {\n\n\t\t\tconst vertexColors = ( color === undefined ) ? [] : [\n\t\t\t\tscope.colors[ a ].clone(),\n\t\t\t\tscope.colors[ b ].clone(),\n\t\t\t\tscope.colors[ c ].clone()\n\t\t\t];\n\n\t\t\tconst vertexNormals = ( normal === undefined ) ? [] : [\n\t\t\t\tnew Vector3().fromBufferAttribute( normal, a ),\n\t\t\t\tnew Vector3().fromBufferAttribute( normal, b ),\n\t\t\t\tnew Vector3().fromBufferAttribute( normal, c )\n\t\t\t];\n\n\t\t\tconst face = new Face3( a, b, c, vertexNormals, vertexColors, materialIndex );\n\n\t\t\tscope.faces.push( face );\n\n\t\t\tif ( uv !== undefined ) {\n\n\t\t\t\tscope.faceVertexUvs[ 0 ].push( [\n\t\t\t\t\tnew Vector2().fromBufferAttribute( uv, a ),\n\t\t\t\t\tnew Vector2().fromBufferAttribute( uv, b ),\n\t\t\t\t\tnew Vector2().fromBufferAttribute( uv, c )\n\t\t\t\t] );\n\n\t\t\t}\n\n\t\t\tif ( uv2 !== undefined ) {\n\n\t\t\t\tscope.faceVertexUvs[ 1 ].push( [\n\t\t\t\t\tnew Vector2().fromBufferAttribute( uv2, a ),\n\t\t\t\t\tnew Vector2().fromBufferAttribute( uv2, b ),\n\t\t\t\t\tnew Vector2().fromBufferAttribute( uv2, c )\n\t\t\t\t] );\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst groups = geometry.groups;\n\n\t\tif ( groups.length > 0 ) {\n\n\t\t\tfor ( let i = 0; i < groups.length; i ++ ) {\n\n\t\t\t\tconst group = groups[ i ];\n\n\t\t\t\tconst start = group.start;\n\t\t\t\tconst count = group.count;\n\n\t\t\t\tfor ( let j = start, jl = start + count; j < jl; j += 3 ) {\n\n\t\t\t\t\tif ( index !== undefined ) {\n\n\t\t\t\t\t\taddFace( index.getX( j ), index.getX( j + 1 ), index.getX( j + 2 ), group.materialIndex );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\taddFace( j, j + 1, j + 2, group.materialIndex );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tif ( index !== undefined ) {\n\n\t\t\t\tfor ( let i = 0; i < index.count; i += 3 ) {\n\n\t\t\t\t\taddFace( index.getX( i ), index.getX( i + 1 ), index.getX( i + 2 ) );\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tfor ( let i = 0; i < position.count; i += 3 ) {\n\n\t\t\t\t\taddFace( i, i + 1, i + 2 );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis.computeFaceNormals();\n\n\t\tif ( geometry.boundingBox !== null ) {\n\n\t\t\tthis.boundingBox = geometry.boundingBox.clone();\n\n\t\t}\n\n\t\tif ( geometry.boundingSphere !== null ) {\n\n\t\t\tthis.boundingSphere = geometry.boundingSphere.clone();\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tcenter: function () {\n\n\t\tthis.computeBoundingBox();\n\n\t\tthis.boundingBox.getCenter( _offset$1 ).negate();\n\n\t\tthis.translate( _offset$1.x, _offset$1.y, _offset$1.z );\n\n\t\treturn this;\n\n\t},\n\n\tnormalize: function () {\n\n\t\tthis.computeBoundingSphere();\n\n\t\tconst center = this.boundingSphere.center;\n\t\tconst radius = this.boundingSphere.radius;\n\n\t\tconst s = radius === 0 ? 1 : 1.0 / radius;\n\n\t\tconst matrix = new Matrix4();\n\t\tmatrix.set(\n\t\t\ts, 0, 0, - s * center.x,\n\t\t\t0, s, 0, - s * center.y,\n\t\t\t0, 0, s, - s * center.z,\n\t\t\t0, 0, 0, 1\n\t\t);\n\n\t\tthis.applyMatrix4( matrix );\n\n\t\treturn this;\n\n\t},\n\n\tcomputeFaceNormals: function () {\n\n\t\tconst cb = new Vector3(), ab = new Vector3();\n\n\t\tfor ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {\n\n\t\t\tconst face = this.faces[ f ];\n\n\t\t\tconst vA = this.vertices[ face.a ];\n\t\t\tconst vB = this.vertices[ face.b ];\n\t\t\tconst vC = this.vertices[ face.c ];\n\n\t\t\tcb.subVectors( vC, vB );\n\t\t\tab.subVectors( vA, vB );\n\t\t\tcb.cross( ab );\n\n\t\t\tcb.normalize();\n\n\t\t\tface.normal.copy( cb );\n\n\t\t}\n\n\t},\n\n\tcomputeVertexNormals: function ( areaWeighted = true ) {\n\n\t\tconst vertices = new Array( this.vertices.length );\n\n\t\tfor ( let v = 0, vl = this.vertices.length; v < vl; v ++ ) {\n\n\t\t\tvertices[ v ] = new Vector3();\n\n\t\t}\n\n\t\tif ( areaWeighted ) {\n\n\t\t\t// vertex normals weighted by triangle areas\n\t\t\t// http://www.iquilezles.org/www/articles/normals/normals.htm\n\n\t\t\tconst cb = new Vector3(), ab = new Vector3();\n\n\t\t\tfor ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {\n\n\t\t\t\tconst face = this.faces[ f ];\n\n\t\t\t\tconst vA = this.vertices[ face.a ];\n\t\t\t\tconst vB = this.vertices[ face.b ];\n\t\t\t\tconst vC = this.vertices[ face.c ];\n\n\t\t\t\tcb.subVectors( vC, vB );\n\t\t\t\tab.subVectors( vA, vB );\n\t\t\t\tcb.cross( ab );\n\n\t\t\t\tvertices[ face.a ].add( cb );\n\t\t\t\tvertices[ face.b ].add( cb );\n\t\t\t\tvertices[ face.c ].add( cb );\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tthis.computeFaceNormals();\n\n\t\t\tfor ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {\n\n\t\t\t\tconst face = this.faces[ f ];\n\n\t\t\t\tvertices[ face.a ].add( face.normal );\n\t\t\t\tvertices[ face.b ].add( face.normal );\n\t\t\t\tvertices[ face.c ].add( face.normal );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfor ( let v = 0, vl = this.vertices.length; v < vl; v ++ ) {\n\n\t\t\tvertices[ v ].normalize();\n\n\t\t}\n\n\t\tfor ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {\n\n\t\t\tconst face = this.faces[ f ];\n\n\t\t\tconst vertexNormals = face.vertexNormals;\n\n\t\t\tif ( vertexNormals.length === 3 ) {\n\n\t\t\t\tvertexNormals[ 0 ].copy( vertices[ face.a ] );\n\t\t\t\tvertexNormals[ 1 ].copy( vertices[ face.b ] );\n\t\t\t\tvertexNormals[ 2 ].copy( vertices[ face.c ] );\n\n\t\t\t} else {\n\n\t\t\t\tvertexNormals[ 0 ] = vertices[ face.a ].clone();\n\t\t\t\tvertexNormals[ 1 ] = vertices[ face.b ].clone();\n\t\t\t\tvertexNormals[ 2 ] = vertices[ face.c ].clone();\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( this.faces.length > 0 ) {\n\n\t\t\tthis.normalsNeedUpdate = true;\n\n\t\t}\n\n\t},\n\n\tcomputeFlatVertexNormals: function () {\n\n\t\tthis.computeFaceNormals();\n\n\t\tfor ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {\n\n\t\t\tconst face = this.faces[ f ];\n\n\t\t\tconst vertexNormals = face.vertexNormals;\n\n\t\t\tif ( vertexNormals.length === 3 ) {\n\n\t\t\t\tvertexNormals[ 0 ].copy( face.normal );\n\t\t\t\tvertexNormals[ 1 ].copy( face.normal );\n\t\t\t\tvertexNormals[ 2 ].copy( face.normal );\n\n\t\t\t} else {\n\n\t\t\t\tvertexNormals[ 0 ] = face.normal.clone();\n\t\t\t\tvertexNormals[ 1 ] = face.normal.clone();\n\t\t\t\tvertexNormals[ 2 ] = face.normal.clone();\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( this.faces.length > 0 ) {\n\n\t\t\tthis.normalsNeedUpdate = true;\n\n\t\t}\n\n\t},\n\n\tcomputeMorphNormals: function () {\n\n\t\t// save original normals\n\t\t// - create temp variables on first access\n\t\t//   otherwise just copy (for faster repeated calls)\n\n\t\tfor ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {\n\n\t\t\tconst face = this.faces[ f ];\n\n\t\t\tif ( ! face.__originalFaceNormal ) {\n\n\t\t\t\tface.__originalFaceNormal = face.normal.clone();\n\n\t\t\t} else {\n\n\t\t\t\tface.__originalFaceNormal.copy( face.normal );\n\n\t\t\t}\n\n\t\t\tif ( ! face.__originalVertexNormals ) face.__originalVertexNormals = [];\n\n\t\t\tfor ( let i = 0, il = face.vertexNormals.length; i < il; i ++ ) {\n\n\t\t\t\tif ( ! face.__originalVertexNormals[ i ] ) {\n\n\t\t\t\t\tface.__originalVertexNormals[ i ] = face.vertexNormals[ i ].clone();\n\n\t\t\t\t} else {\n\n\t\t\t\t\tface.__originalVertexNormals[ i ].copy( face.vertexNormals[ i ] );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\t// use temp geometry to compute face and vertex normals for each morph\n\n\t\tconst tmpGeo = new Geometry();\n\t\ttmpGeo.faces = this.faces;\n\n\t\tfor ( let i = 0, il = this.morphTargets.length; i < il; i ++ ) {\n\n\t\t\t// create on first access\n\n\t\t\tif ( ! this.morphNormals[ i ] ) {\n\n\t\t\t\tthis.morphNormals[ i ] = {};\n\t\t\t\tthis.morphNormals[ i ].faceNormals = [];\n\t\t\t\tthis.morphNormals[ i ].vertexNormals = [];\n\n\t\t\t\tconst dstNormalsFace = this.morphNormals[ i ].faceNormals;\n\t\t\t\tconst dstNormalsVertex = this.morphNormals[ i ].vertexNormals;\n\n\t\t\t\tfor ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {\n\n\t\t\t\t\tconst faceNormal = new Vector3();\n\t\t\t\t\tconst vertexNormals = { a: new Vector3(), b: new Vector3(), c: new Vector3() };\n\n\t\t\t\t\tdstNormalsFace.push( faceNormal );\n\t\t\t\t\tdstNormalsVertex.push( vertexNormals );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tconst morphNormals = this.morphNormals[ i ];\n\n\t\t\t// set vertices to morph target\n\n\t\t\ttmpGeo.vertices = this.morphTargets[ i ].vertices;\n\n\t\t\t// compute morph normals\n\n\t\t\ttmpGeo.computeFaceNormals();\n\t\t\ttmpGeo.computeVertexNormals();\n\n\t\t\t// store morph normals\n\n\t\t\tfor ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {\n\n\t\t\t\tconst face = this.faces[ f ];\n\n\t\t\t\tconst faceNormal = morphNormals.faceNormals[ f ];\n\t\t\t\tconst vertexNormals = morphNormals.vertexNormals[ f ];\n\n\t\t\t\tfaceNormal.copy( face.normal );\n\n\t\t\t\tvertexNormals.a.copy( face.vertexNormals[ 0 ] );\n\t\t\t\tvertexNormals.b.copy( face.vertexNormals[ 1 ] );\n\t\t\t\tvertexNormals.c.copy( face.vertexNormals[ 2 ] );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// restore original normals\n\n\t\tfor ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {\n\n\t\t\tconst face = this.faces[ f ];\n\n\t\t\tface.normal = face.__originalFaceNormal;\n\t\t\tface.vertexNormals = face.__originalVertexNormals;\n\n\t\t}\n\n\t},\n\n\tcomputeBoundingBox: function () {\n\n\t\tif ( this.boundingBox === null ) {\n\n\t\t\tthis.boundingBox = new Box3();\n\n\t\t}\n\n\t\tthis.boundingBox.setFromPoints( this.vertices );\n\n\t},\n\n\tcomputeBoundingSphere: function () {\n\n\t\tif ( this.boundingSphere === null ) {\n\n\t\t\tthis.boundingSphere = new Sphere();\n\n\t\t}\n\n\t\tthis.boundingSphere.setFromPoints( this.vertices );\n\n\t},\n\n\tmerge: function ( geometry, matrix, materialIndexOffset = 0 ) {\n\n\t\tif ( ! ( geometry && geometry.isGeometry ) ) {\n\n\t\t\tconsole.error( 'THREE.Geometry.merge(): geometry not an instance of THREE.Geometry.', geometry );\n\t\t\treturn;\n\n\t\t}\n\n\t\tlet normalMatrix;\n\t\tconst vertexOffset = this.vertices.length,\n\t\t\tvertices1 = this.vertices,\n\t\t\tvertices2 = geometry.vertices,\n\t\t\tfaces1 = this.faces,\n\t\t\tfaces2 = geometry.faces,\n\t\t\tcolors1 = this.colors,\n\t\t\tcolors2 = geometry.colors;\n\n\t\tif ( matrix !== undefined ) {\n\n\t\t\tnormalMatrix = new Matrix3().getNormalMatrix( matrix );\n\n\t\t}\n\n\t\t// vertices\n\n\t\tfor ( let i = 0, il = vertices2.length; i < il; i ++ ) {\n\n\t\t\tconst vertex = vertices2[ i ];\n\n\t\t\tconst vertexCopy = vertex.clone();\n\n\t\t\tif ( matrix !== undefined ) vertexCopy.applyMatrix4( matrix );\n\n\t\t\tvertices1.push( vertexCopy );\n\n\t\t}\n\n\t\t// colors\n\n\t\tfor ( let i = 0, il = colors2.length; i < il; i ++ ) {\n\n\t\t\tcolors1.push( colors2[ i ].clone() );\n\n\t\t}\n\n\t\t// faces\n\n\t\tfor ( let i = 0, il = faces2.length; i < il; i ++ ) {\n\n\t\t\tconst face = faces2[ i ];\n\t\t\tlet normal, color;\n\t\t\tconst faceVertexNormals = face.vertexNormals,\n\t\t\t\tfaceVertexColors = face.vertexColors;\n\n\t\t\tconst faceCopy = new Face3( face.a + vertexOffset, face.b + vertexOffset, face.c + vertexOffset );\n\t\t\tfaceCopy.normal.copy( face.normal );\n\n\t\t\tif ( normalMatrix !== undefined ) {\n\n\t\t\t\tfaceCopy.normal.applyMatrix3( normalMatrix ).normalize();\n\n\t\t\t}\n\n\t\t\tfor ( let j = 0, jl = faceVertexNormals.length; j < jl; j ++ ) {\n\n\t\t\t\tnormal = faceVertexNormals[ j ].clone();\n\n\t\t\t\tif ( normalMatrix !== undefined ) {\n\n\t\t\t\t\tnormal.applyMatrix3( normalMatrix ).normalize();\n\n\t\t\t\t}\n\n\t\t\t\tfaceCopy.vertexNormals.push( normal );\n\n\t\t\t}\n\n\t\t\tfaceCopy.color.copy( face.color );\n\n\t\t\tfor ( let j = 0, jl = faceVertexColors.length; j < jl; j ++ ) {\n\n\t\t\t\tcolor = faceVertexColors[ j ];\n\t\t\t\tfaceCopy.vertexColors.push( color.clone() );\n\n\t\t\t}\n\n\t\t\tfaceCopy.materialIndex = face.materialIndex + materialIndexOffset;\n\n\t\t\tfaces1.push( faceCopy );\n\n\t\t}\n\n\t\t// uvs\n\n\t\tfor ( let i = 0, il = geometry.faceVertexUvs.length; i < il; i ++ ) {\n\n\t\t\tconst faceVertexUvs2 = geometry.faceVertexUvs[ i ];\n\n\t\t\tif ( this.faceVertexUvs[ i ] === undefined ) this.faceVertexUvs[ i ] = [];\n\n\t\t\tfor ( let j = 0, jl = faceVertexUvs2.length; j < jl; j ++ ) {\n\n\t\t\t\tconst uvs2 = faceVertexUvs2[ j ], uvsCopy = [];\n\n\t\t\t\tfor ( let k = 0, kl = uvs2.length; k < kl; k ++ ) {\n\n\t\t\t\t\tuvsCopy.push( uvs2[ k ].clone() );\n\n\t\t\t\t}\n\n\t\t\t\tthis.faceVertexUvs[ i ].push( uvsCopy );\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\tmergeMesh: function ( mesh ) {\n\n\t\tif ( ! ( mesh && mesh.isMesh ) ) {\n\n\t\t\tconsole.error( 'THREE.Geometry.mergeMesh(): mesh not an instance of THREE.Mesh.', mesh );\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( mesh.matrixAutoUpdate ) mesh.updateMatrix();\n\n\t\tthis.merge( mesh.geometry, mesh.matrix );\n\n\t},\n\n\t/*\n\t * Checks for duplicate vertices with hashmap.\n\t * Duplicated vertices are removed\n\t * and faces' vertices are updated.\n\t */\n\n\tmergeVertices: function ( precisionPoints = 4 ) {\n\n\t\tconst verticesMap = {}; // Hashmap for looking up vertices by position coordinates (and making sure they are unique)\n\t\tconst unique = [], changes = [];\n\n\t\tconst precision = Math.pow( 10, precisionPoints );\n\n\t\tfor ( let i = 0, il = this.vertices.length; i < il; i ++ ) {\n\n\t\t\tconst v = this.vertices[ i ];\n\t\t\tconst key = Math.round( v.x * precision ) + '_' + Math.round( v.y * precision ) + '_' + Math.round( v.z * precision );\n\n\t\t\tif ( verticesMap[ key ] === undefined ) {\n\n\t\t\t\tverticesMap[ key ] = i;\n\t\t\t\tunique.push( this.vertices[ i ] );\n\t\t\t\tchanges[ i ] = unique.length - 1;\n\n\t\t\t} else {\n\n\t\t\t\t//console.log('Duplicate vertex found. ', i, ' could be using ', verticesMap[key]);\n\t\t\t\tchanges[ i ] = changes[ verticesMap[ key ] ];\n\n\t\t\t}\n\n\t\t}\n\n\n\t\t// if faces are completely degenerate after merging vertices, we\n\t\t// have to remove them from the geometry.\n\t\tconst faceIndicesToRemove = [];\n\n\t\tfor ( let i = 0, il = this.faces.length; i < il; i ++ ) {\n\n\t\t\tconst face = this.faces[ i ];\n\n\t\t\tface.a = changes[ face.a ];\n\t\t\tface.b = changes[ face.b ];\n\t\t\tface.c = changes[ face.c ];\n\n\t\t\tconst indices = [ face.a, face.b, face.c ];\n\n\t\t\t// if any duplicate vertices are found in a Face3\n\t\t\t// we have to remove the face as nothing can be saved\n\t\t\tfor ( let n = 0; n < 3; n ++ ) {\n\n\t\t\t\tif ( indices[ n ] === indices[ ( n + 1 ) % 3 ] ) {\n\n\t\t\t\t\tfaceIndicesToRemove.push( i );\n\t\t\t\t\tbreak;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tfor ( let i = faceIndicesToRemove.length - 1; i >= 0; i -- ) {\n\n\t\t\tconst idx = faceIndicesToRemove[ i ];\n\n\t\t\tthis.faces.splice( idx, 1 );\n\n\t\t\tfor ( let j = 0, jl = this.faceVertexUvs.length; j < jl; j ++ ) {\n\n\t\t\t\tthis.faceVertexUvs[ j ].splice( idx, 1 );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// Use unique set of vertices\n\n\t\tconst diff = this.vertices.length - unique.length;\n\t\tthis.vertices = unique;\n\t\treturn diff;\n\n\t},\n\n\tsetFromPoints: function ( points ) {\n\n\t\tthis.vertices = [];\n\n\t\tfor ( let i = 0, l = points.length; i < l; i ++ ) {\n\n\t\t\tconst point = points[ i ];\n\t\t\tthis.vertices.push( new Vector3( point.x, point.y, point.z || 0 ) );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tsortFacesByMaterialIndex: function () {\n\n\t\tconst faces = this.faces;\n\t\tconst length = faces.length;\n\n\t\t// tag faces\n\n\t\tfor ( let i = 0; i < length; i ++ ) {\n\n\t\t\tfaces[ i ]._id = i;\n\n\t\t}\n\n\t\t// sort faces\n\n\t\tfunction materialIndexSort( a, b ) {\n\n\t\t\treturn a.materialIndex - b.materialIndex;\n\n\t\t}\n\n\t\tfaces.sort( materialIndexSort );\n\n\t\t// sort uvs\n\n\t\tconst uvs1 = this.faceVertexUvs[ 0 ];\n\t\tconst uvs2 = this.faceVertexUvs[ 1 ];\n\n\t\tlet newUvs1, newUvs2;\n\n\t\tif ( uvs1 && uvs1.length === length ) newUvs1 = [];\n\t\tif ( uvs2 && uvs2.length === length ) newUvs2 = [];\n\n\t\tfor ( let i = 0; i < length; i ++ ) {\n\n\t\t\tconst id = faces[ i ]._id;\n\n\t\t\tif ( newUvs1 ) newUvs1.push( uvs1[ id ] );\n\t\t\tif ( newUvs2 ) newUvs2.push( uvs2[ id ] );\n\n\t\t}\n\n\t\tif ( newUvs1 ) this.faceVertexUvs[ 0 ] = newUvs1;\n\t\tif ( newUvs2 ) this.faceVertexUvs[ 1 ] = newUvs2;\n\n\t},\n\n\ttoJSON: function () {\n\n\t\tconst data = {\n\t\t\tmetadata: {\n\t\t\t\tversion: 4.5,\n\t\t\t\ttype: 'Geometry',\n\t\t\t\tgenerator: 'Geometry.toJSON'\n\t\t\t}\n\t\t};\n\n\t\t// standard Geometry serialization\n\n\t\tdata.uuid = this.uuid;\n\t\tdata.type = this.type;\n\t\tif ( this.name !== '' ) data.name = this.name;\n\n\t\tif ( this.parameters !== undefined ) {\n\n\t\t\tconst parameters = this.parameters;\n\n\t\t\tfor ( const key in parameters ) {\n\n\t\t\t\tif ( parameters[ key ] !== undefined ) data[ key ] = parameters[ key ];\n\n\t\t\t}\n\n\t\t\treturn data;\n\n\t\t}\n\n\t\tconst vertices = [];\n\n\t\tfor ( let i = 0; i < this.vertices.length; i ++ ) {\n\n\t\t\tconst vertex = this.vertices[ i ];\n\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t}\n\n\t\tconst faces = [];\n\t\tconst normals = [];\n\t\tconst normalsHash = {};\n\t\tconst colors = [];\n\t\tconst colorsHash = {};\n\t\tconst uvs = [];\n\t\tconst uvsHash = {};\n\n\t\tfor ( let i = 0; i < this.faces.length; i ++ ) {\n\n\t\t\tconst face = this.faces[ i ];\n\n\t\t\tconst hasMaterial = true;\n\t\t\tconst hasFaceUv = false; // deprecated\n\t\t\tconst hasFaceVertexUv = this.faceVertexUvs[ 0 ][ i ] !== undefined;\n\t\t\tconst hasFaceNormal = face.normal.length() > 0;\n\t\t\tconst hasFaceVertexNormal = face.vertexNormals.length > 0;\n\t\t\tconst hasFaceColor = face.color.r !== 1 || face.color.g !== 1 || face.color.b !== 1;\n\t\t\tconst hasFaceVertexColor = face.vertexColors.length > 0;\n\n\t\t\tlet faceType = 0;\n\n\t\t\tfaceType = setBit( faceType, 0, 0 ); // isQuad\n\t\t\tfaceType = setBit( faceType, 1, hasMaterial );\n\t\t\tfaceType = setBit( faceType, 2, hasFaceUv );\n\t\t\tfaceType = setBit( faceType, 3, hasFaceVertexUv );\n\t\t\tfaceType = setBit( faceType, 4, hasFaceNormal );\n\t\t\tfaceType = setBit( faceType, 5, hasFaceVertexNormal );\n\t\t\tfaceType = setBit( faceType, 6, hasFaceColor );\n\t\t\tfaceType = setBit( faceType, 7, hasFaceVertexColor );\n\n\t\t\tfaces.push( faceType );\n\t\t\tfaces.push( face.a, face.b, face.c );\n\t\t\tfaces.push( face.materialIndex );\n\n\t\t\tif ( hasFaceVertexUv ) {\n\n\t\t\t\tconst faceVertexUvs = this.faceVertexUvs[ 0 ][ i ];\n\n\t\t\t\tfaces.push(\n\t\t\t\t\tgetUvIndex( faceVertexUvs[ 0 ] ),\n\t\t\t\t\tgetUvIndex( faceVertexUvs[ 1 ] ),\n\t\t\t\t\tgetUvIndex( faceVertexUvs[ 2 ] )\n\t\t\t\t);\n\n\t\t\t}\n\n\t\t\tif ( hasFaceNormal ) {\n\n\t\t\t\tfaces.push( getNormalIndex( face.normal ) );\n\n\t\t\t}\n\n\t\t\tif ( hasFaceVertexNormal ) {\n\n\t\t\t\tconst vertexNormals = face.vertexNormals;\n\n\t\t\t\tfaces.push(\n\t\t\t\t\tgetNormalIndex( vertexNormals[ 0 ] ),\n\t\t\t\t\tgetNormalIndex( vertexNormals[ 1 ] ),\n\t\t\t\t\tgetNormalIndex( vertexNormals[ 2 ] )\n\t\t\t\t);\n\n\t\t\t}\n\n\t\t\tif ( hasFaceColor ) {\n\n\t\t\t\tfaces.push( getColorIndex( face.color ) );\n\n\t\t\t}\n\n\t\t\tif ( hasFaceVertexColor ) {\n\n\t\t\t\tconst vertexColors = face.vertexColors;\n\n\t\t\t\tfaces.push(\n\t\t\t\t\tgetColorIndex( vertexColors[ 0 ] ),\n\t\t\t\t\tgetColorIndex( vertexColors[ 1 ] ),\n\t\t\t\t\tgetColorIndex( vertexColors[ 2 ] )\n\t\t\t\t);\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction setBit( value, position, enabled ) {\n\n\t\t\treturn enabled ? value | ( 1 << position ) : value & ( ~ ( 1 << position ) );\n\n\t\t}\n\n\t\tfunction getNormalIndex( normal ) {\n\n\t\t\tconst hash = normal.x.toString() + normal.y.toString() + normal.z.toString();\n\n\t\t\tif ( normalsHash[ hash ] !== undefined ) {\n\n\t\t\t\treturn normalsHash[ hash ];\n\n\t\t\t}\n\n\t\t\tnormalsHash[ hash ] = normals.length / 3;\n\t\t\tnormals.push( normal.x, normal.y, normal.z );\n\n\t\t\treturn normalsHash[ hash ];\n\n\t\t}\n\n\t\tfunction getColorIndex( color ) {\n\n\t\t\tconst hash = color.r.toString() + color.g.toString() + color.b.toString();\n\n\t\t\tif ( colorsHash[ hash ] !== undefined ) {\n\n\t\t\t\treturn colorsHash[ hash ];\n\n\t\t\t}\n\n\t\t\tcolorsHash[ hash ] = colors.length;\n\t\t\tcolors.push( color.getHex() );\n\n\t\t\treturn colorsHash[ hash ];\n\n\t\t}\n\n\t\tfunction getUvIndex( uv ) {\n\n\t\t\tconst hash = uv.x.toString() + uv.y.toString();\n\n\t\t\tif ( uvsHash[ hash ] !== undefined ) {\n\n\t\t\t\treturn uvsHash[ hash ];\n\n\t\t\t}\n\n\t\t\tuvsHash[ hash ] = uvs.length / 2;\n\t\t\tuvs.push( uv.x, uv.y );\n\n\t\t\treturn uvsHash[ hash ];\n\n\t\t}\n\n\t\tdata.data = {};\n\n\t\tdata.data.vertices = vertices;\n\t\tdata.data.normals = normals;\n\t\tif ( colors.length > 0 ) data.data.colors = colors;\n\t\tif ( uvs.length > 0 ) data.data.uvs = [ uvs ]; // temporal backward compatibility\n\t\tdata.data.faces = faces;\n\n\t\treturn data;\n\n\t},\n\n\tclone: function () {\n\n\t\t/*\n\t\t // Handle primitives\n\n\t\t const parameters = this.parameters;\n\n\t\t if ( parameters !== undefined ) {\n\n\t\t const values = [];\n\n\t\t for ( const key in parameters ) {\n\n\t\t values.push( parameters[ key ] );\n\n\t\t }\n\n\t\t const geometry = Object.create( this.constructor.prototype );\n\t\t this.constructor.apply( geometry, values );\n\t\t return geometry;\n\n\t\t }\n\n\t\t return new this.constructor().copy( this );\n\t\t */\n\n\t\treturn new Geometry().copy( this );\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\t// reset\n\n\t\tthis.vertices = [];\n\t\tthis.colors = [];\n\t\tthis.faces = [];\n\t\tthis.faceVertexUvs = [[]];\n\t\tthis.morphTargets = [];\n\t\tthis.morphNormals = [];\n\t\tthis.skinWeights = [];\n\t\tthis.skinIndices = [];\n\t\tthis.lineDistances = [];\n\t\tthis.boundingBox = null;\n\t\tthis.boundingSphere = null;\n\n\t\t// name\n\n\t\tthis.name = source.name;\n\n\t\t// vertices\n\n\t\tconst vertices = source.vertices;\n\n\t\tfor ( let i = 0, il = vertices.length; i < il; i ++ ) {\n\n\t\t\tthis.vertices.push( vertices[ i ].clone() );\n\n\t\t}\n\n\t\t// colors\n\n\t\tconst colors = source.colors;\n\n\t\tfor ( let i = 0, il = colors.length; i < il; i ++ ) {\n\n\t\t\tthis.colors.push( colors[ i ].clone() );\n\n\t\t}\n\n\t\t// faces\n\n\t\tconst faces = source.faces;\n\n\t\tfor ( let i = 0, il = faces.length; i < il; i ++ ) {\n\n\t\t\tthis.faces.push( faces[ i ].clone() );\n\n\t\t}\n\n\t\t// face vertex uvs\n\n\t\tfor ( let i = 0, il = source.faceVertexUvs.length; i < il; i ++ ) {\n\n\t\t\tconst faceVertexUvs = source.faceVertexUvs[ i ];\n\n\t\t\tif ( this.faceVertexUvs[ i ] === undefined ) {\n\n\t\t\t\tthis.faceVertexUvs[ i ] = [];\n\n\t\t\t}\n\n\t\t\tfor ( let j = 0, jl = faceVertexUvs.length; j < jl; j ++ ) {\n\n\t\t\t\tconst uvs = faceVertexUvs[ j ], uvsCopy = [];\n\n\t\t\t\tfor ( let k = 0, kl = uvs.length; k < kl; k ++ ) {\n\n\t\t\t\t\tconst uv = uvs[ k ];\n\n\t\t\t\t\tuvsCopy.push( uv.clone() );\n\n\t\t\t\t}\n\n\t\t\t\tthis.faceVertexUvs[ i ].push( uvsCopy );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// morph targets\n\n\t\tconst morphTargets = source.morphTargets;\n\n\t\tfor ( let i = 0, il = morphTargets.length; i < il; i ++ ) {\n\n\t\t\tconst morphTarget = {};\n\t\t\tmorphTarget.name = morphTargets[ i ].name;\n\n\t\t\t// vertices\n\n\t\t\tif ( morphTargets[ i ].vertices !== undefined ) {\n\n\t\t\t\tmorphTarget.vertices = [];\n\n\t\t\t\tfor ( let j = 0, jl = morphTargets[ i ].vertices.length; j < jl; j ++ ) {\n\n\t\t\t\t\tmorphTarget.vertices.push( morphTargets[ i ].vertices[ j ].clone() );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// normals\n\n\t\t\tif ( morphTargets[ i ].normals !== undefined ) {\n\n\t\t\t\tmorphTarget.normals = [];\n\n\t\t\t\tfor ( let j = 0, jl = morphTargets[ i ].normals.length; j < jl; j ++ ) {\n\n\t\t\t\t\tmorphTarget.normals.push( morphTargets[ i ].normals[ j ].clone() );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tthis.morphTargets.push( morphTarget );\n\n\t\t}\n\n\t\t// morph normals\n\n\t\tconst morphNormals = source.morphNormals;\n\n\t\tfor ( let i = 0, il = morphNormals.length; i < il; i ++ ) {\n\n\t\t\tconst morphNormal = {};\n\n\t\t\t// vertex normals\n\n\t\t\tif ( morphNormals[ i ].vertexNormals !== undefined ) {\n\n\t\t\t\tmorphNormal.vertexNormals = [];\n\n\t\t\t\tfor ( let j = 0, jl = morphNormals[ i ].vertexNormals.length; j < jl; j ++ ) {\n\n\t\t\t\t\tconst srcVertexNormal = morphNormals[ i ].vertexNormals[ j ];\n\t\t\t\t\tconst destVertexNormal = {};\n\n\t\t\t\t\tdestVertexNormal.a = srcVertexNormal.a.clone();\n\t\t\t\t\tdestVertexNormal.b = srcVertexNormal.b.clone();\n\t\t\t\t\tdestVertexNormal.c = srcVertexNormal.c.clone();\n\n\t\t\t\t\tmorphNormal.vertexNormals.push( destVertexNormal );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// face normals\n\n\t\t\tif ( morphNormals[ i ].faceNormals !== undefined ) {\n\n\t\t\t\tmorphNormal.faceNormals = [];\n\n\t\t\t\tfor ( let j = 0, jl = morphNormals[ i ].faceNormals.length; j < jl; j ++ ) {\n\n\t\t\t\t\tmorphNormal.faceNormals.push( morphNormals[ i ].faceNormals[ j ].clone() );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tthis.morphNormals.push( morphNormal );\n\n\t\t}\n\n\t\t// skin weights\n\n\t\tconst skinWeights = source.skinWeights;\n\n\t\tfor ( let i = 0, il = skinWeights.length; i < il; i ++ ) {\n\n\t\t\tthis.skinWeights.push( skinWeights[ i ].clone() );\n\n\t\t}\n\n\t\t// skin indices\n\n\t\tconst skinIndices = source.skinIndices;\n\n\t\tfor ( let i = 0, il = skinIndices.length; i < il; i ++ ) {\n\n\t\t\tthis.skinIndices.push( skinIndices[ i ].clone() );\n\n\t\t}\n\n\t\t// line distances\n\n\t\tconst lineDistances = source.lineDistances;\n\n\t\tfor ( let i = 0, il = lineDistances.length; i < il; i ++ ) {\n\n\t\t\tthis.lineDistances.push( lineDistances[ i ] );\n\n\t\t}\n\n\t\t// bounding box\n\n\t\tconst boundingBox = source.boundingBox;\n\n\t\tif ( boundingBox !== null ) {\n\n\t\t\tthis.boundingBox = boundingBox.clone();\n\n\t\t}\n\n\t\t// bounding sphere\n\n\t\tconst boundingSphere = source.boundingSphere;\n\n\t\tif ( boundingSphere !== null ) {\n\n\t\t\tthis.boundingSphere = boundingSphere.clone();\n\n\t\t}\n\n\t\t// update flags\n\n\t\tthis.elementsNeedUpdate = source.elementsNeedUpdate;\n\t\tthis.verticesNeedUpdate = source.verticesNeedUpdate;\n\t\tthis.uvsNeedUpdate = source.uvsNeedUpdate;\n\t\tthis.normalsNeedUpdate = source.normalsNeedUpdate;\n\t\tthis.colorsNeedUpdate = source.colorsNeedUpdate;\n\t\tthis.lineDistancesNeedUpdate = source.lineDistancesNeedUpdate;\n\t\tthis.groupsNeedUpdate = source.groupsNeedUpdate;\n\n\t\treturn this;\n\n\t},\n\n\tdispose: function () {\n\n\t\tthis.dispatchEvent( { type: 'dispose' } );\n\n\t}\n\n} );\n\nclass BoxGeometry extends Geometry {\n\n\tconstructor( width, height, depth, widthSegments, heightSegments, depthSegments ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'BoxGeometry';\n\n\t\tthis.parameters = {\n\t\t\twidth: width,\n\t\t\theight: height,\n\t\t\tdepth: depth,\n\t\t\twidthSegments: widthSegments,\n\t\t\theightSegments: heightSegments,\n\t\t\tdepthSegments: depthSegments\n\t\t};\n\n\t\tthis.fromBufferGeometry( new BoxBufferGeometry( width, height, depth, widthSegments, heightSegments, depthSegments ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass CircleBufferGeometry extends BufferGeometry {\n\n\tconstructor( radius = 1, segments = 8, thetaStart = 0, thetaLength = Math.PI * 2 ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'CircleBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tsegments: segments,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t\tsegments = Math.max( 3, segments );\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\t// helper variables\n\n\t\tconst vertex = new Vector3();\n\t\tconst uv = new Vector2();\n\n\t\t// center point\n\n\t\tvertices.push( 0, 0, 0 );\n\t\tnormals.push( 0, 0, 1 );\n\t\tuvs.push( 0.5, 0.5 );\n\n\t\tfor ( let s = 0, i = 3; s <= segments; s ++, i += 3 ) {\n\n\t\t\tconst segment = thetaStart + s / segments * thetaLength;\n\n\t\t\t// vertex\n\n\t\t\tvertex.x = radius * Math.cos( segment );\n\t\t\tvertex.y = radius * Math.sin( segment );\n\n\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t// normal\n\n\t\t\tnormals.push( 0, 0, 1 );\n\n\t\t\t// uvs\n\n\t\t\tuv.x = ( vertices[ i ] / radius + 1 ) / 2;\n\t\t\tuv.y = ( vertices[ i + 1 ] / radius + 1 ) / 2;\n\n\t\t\tuvs.push( uv.x, uv.y );\n\n\t\t}\n\n\t\t// indices\n\n\t\tfor ( let i = 1; i <= segments; i ++ ) {\n\n\t\t\tindices.push( i, i + 1, 0 );\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t}\n\n}\n\nclass CircleGeometry extends Geometry {\n\n\tconstructor( radius, segments, thetaStart, thetaLength ) {\n\n\t\tsuper();\n\t\tthis.type = 'CircleGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tsegments: segments,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t\tthis.fromBufferGeometry( new CircleBufferGeometry( radius, segments, thetaStart, thetaLength ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass CylinderBufferGeometry extends BufferGeometry {\n\n\tconstructor( radiusTop = 1, radiusBottom = 1, height = 1, radialSegments = 8, heightSegments = 1, openEnded = false, thetaStart = 0, thetaLength = Math.PI * 2 ) {\n\n\t\tsuper();\n\t\tthis.type = 'CylinderBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradiusTop: radiusTop,\n\t\t\tradiusBottom: radiusBottom,\n\t\t\theight: height,\n\t\t\tradialSegments: radialSegments,\n\t\t\theightSegments: heightSegments,\n\t\t\topenEnded: openEnded,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t\tconst scope = this;\n\n\t\tradialSegments = Math.floor( radialSegments );\n\t\theightSegments = Math.floor( heightSegments );\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\t// helper variables\n\n\t\tlet index = 0;\n\t\tconst indexArray = [];\n\t\tconst halfHeight = height / 2;\n\t\tlet groupStart = 0;\n\n\t\t// generate geometry\n\n\t\tgenerateTorso();\n\n\t\tif ( openEnded === false ) {\n\n\t\t\tif ( radiusTop > 0 ) generateCap( true );\n\t\t\tif ( radiusBottom > 0 ) generateCap( false );\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t\tfunction generateTorso() {\n\n\t\t\tconst normal = new Vector3();\n\t\t\tconst vertex = new Vector3();\n\n\t\t\tlet groupCount = 0;\n\n\t\t\t// this will be used to calculate the normal\n\t\t\tconst slope = ( radiusBottom - radiusTop ) / height;\n\n\t\t\t// generate vertices, normals and uvs\n\n\t\t\tfor ( let y = 0; y <= heightSegments; y ++ ) {\n\n\t\t\t\tconst indexRow = [];\n\n\t\t\t\tconst v = y / heightSegments;\n\n\t\t\t\t// calculate the radius of the current row\n\n\t\t\t\tconst radius = v * ( radiusBottom - radiusTop ) + radiusTop;\n\n\t\t\t\tfor ( let x = 0; x <= radialSegments; x ++ ) {\n\n\t\t\t\t\tconst u = x / radialSegments;\n\n\t\t\t\t\tconst theta = u * thetaLength + thetaStart;\n\n\t\t\t\t\tconst sinTheta = Math.sin( theta );\n\t\t\t\t\tconst cosTheta = Math.cos( theta );\n\n\t\t\t\t\t// vertex\n\n\t\t\t\t\tvertex.x = radius * sinTheta;\n\t\t\t\t\tvertex.y = - v * height + halfHeight;\n\t\t\t\t\tvertex.z = radius * cosTheta;\n\t\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t\t// normal\n\n\t\t\t\t\tnormal.set( sinTheta, slope, cosTheta ).normalize();\n\t\t\t\t\tnormals.push( normal.x, normal.y, normal.z );\n\n\t\t\t\t\t// uv\n\n\t\t\t\t\tuvs.push( u, 1 - v );\n\n\t\t\t\t\t// save index of vertex in respective row\n\n\t\t\t\t\tindexRow.push( index ++ );\n\n\t\t\t\t}\n\n\t\t\t\t// now save vertices of the row in our index array\n\n\t\t\t\tindexArray.push( indexRow );\n\n\t\t\t}\n\n\t\t\t// generate indices\n\n\t\t\tfor ( let x = 0; x < radialSegments; x ++ ) {\n\n\t\t\t\tfor ( let y = 0; y < heightSegments; y ++ ) {\n\n\t\t\t\t\t// we use the index array to access the correct indices\n\n\t\t\t\t\tconst a = indexArray[ y ][ x ];\n\t\t\t\t\tconst b = indexArray[ y + 1 ][ x ];\n\t\t\t\t\tconst c = indexArray[ y + 1 ][ x + 1 ];\n\t\t\t\t\tconst d = indexArray[ y ][ x + 1 ];\n\n\t\t\t\t\t// faces\n\n\t\t\t\t\tindices.push( a, b, d );\n\t\t\t\t\tindices.push( b, c, d );\n\n\t\t\t\t\t// update group counter\n\n\t\t\t\t\tgroupCount += 6;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// add a group to the geometry. this will ensure multi material support\n\n\t\t\tscope.addGroup( groupStart, groupCount, 0 );\n\n\t\t\t// calculate new start value for groups\n\n\t\t\tgroupStart += groupCount;\n\n\t\t}\n\n\t\tfunction generateCap( top ) {\n\n\t\t\t// save the index of the first center vertex\n\t\t\tconst centerIndexStart = index;\n\n\t\t\tconst uv = new Vector2();\n\t\t\tconst vertex = new Vector3();\n\n\t\t\tlet groupCount = 0;\n\n\t\t\tconst radius = ( top === true ) ? radiusTop : radiusBottom;\n\t\t\tconst sign = ( top === true ) ? 1 : - 1;\n\n\t\t\t// first we generate the center vertex data of the cap.\n\t\t\t// because the geometry needs one set of uvs per face,\n\t\t\t// we must generate a center vertex per face/segment\n\n\t\t\tfor ( let x = 1; x <= radialSegments; x ++ ) {\n\n\t\t\t\t// vertex\n\n\t\t\t\tvertices.push( 0, halfHeight * sign, 0 );\n\n\t\t\t\t// normal\n\n\t\t\t\tnormals.push( 0, sign, 0 );\n\n\t\t\t\t// uv\n\n\t\t\t\tuvs.push( 0.5, 0.5 );\n\n\t\t\t\t// increase index\n\n\t\t\t\tindex ++;\n\n\t\t\t}\n\n\t\t\t// save the index of the last center vertex\n\t\t\tconst centerIndexEnd = index;\n\n\t\t\t// now we generate the surrounding vertices, normals and uvs\n\n\t\t\tfor ( let x = 0; x <= radialSegments; x ++ ) {\n\n\t\t\t\tconst u = x / radialSegments;\n\t\t\t\tconst theta = u * thetaLength + thetaStart;\n\n\t\t\t\tconst cosTheta = Math.cos( theta );\n\t\t\t\tconst sinTheta = Math.sin( theta );\n\n\t\t\t\t// vertex\n\n\t\t\t\tvertex.x = radius * sinTheta;\n\t\t\t\tvertex.y = halfHeight * sign;\n\t\t\t\tvertex.z = radius * cosTheta;\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t// normal\n\n\t\t\t\tnormals.push( 0, sign, 0 );\n\n\t\t\t\t// uv\n\n\t\t\t\tuv.x = ( cosTheta * 0.5 ) + 0.5;\n\t\t\t\tuv.y = ( sinTheta * 0.5 * sign ) + 0.5;\n\t\t\t\tuvs.push( uv.x, uv.y );\n\n\t\t\t\t// increase index\n\n\t\t\t\tindex ++;\n\n\t\t\t}\n\n\t\t\t// generate indices\n\n\t\t\tfor ( let x = 0; x < radialSegments; x ++ ) {\n\n\t\t\t\tconst c = centerIndexStart + x;\n\t\t\t\tconst i = centerIndexEnd + x;\n\n\t\t\t\tif ( top === true ) {\n\n\t\t\t\t\t// face top\n\n\t\t\t\t\tindices.push( i, i + 1, c );\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// face bottom\n\n\t\t\t\t\tindices.push( i + 1, i, c );\n\n\t\t\t\t}\n\n\t\t\t\tgroupCount += 3;\n\n\t\t\t}\n\n\t\t\t// add a group to the geometry. this will ensure multi material support\n\n\t\t\tscope.addGroup( groupStart, groupCount, top === true ? 1 : 2 );\n\n\t\t\t// calculate new start value for groups\n\n\t\t\tgroupStart += groupCount;\n\n\t\t}\n\n\t}\n\n}\n\nclass CylinderGeometry extends Geometry {\n\n\tconstructor( radiusTop, radiusBottom, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) {\n\n\t\tsuper();\n\t\tthis.type = 'CylinderGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradiusTop: radiusTop,\n\t\t\tradiusBottom: radiusBottom,\n\t\t\theight: height,\n\t\t\tradialSegments: radialSegments,\n\t\t\theightSegments: heightSegments,\n\t\t\topenEnded: openEnded,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t\tthis.fromBufferGeometry( new CylinderBufferGeometry( radiusTop, radiusBottom, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass ConeGeometry extends CylinderGeometry {\n\n\tconstructor( radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) {\n\n\t\tsuper( 0, radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength );\n\t\tthis.type = 'ConeGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\theight: height,\n\t\t\tradialSegments: radialSegments,\n\t\t\theightSegments: heightSegments,\n\t\t\topenEnded: openEnded,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t}\n\n}\n\nclass ConeBufferGeometry extends CylinderBufferGeometry {\n\n\tconstructor( radius = 1, height = 1, radialSegments = 8, heightSegments = 1, openEnded = false, thetaStart = 0, thetaLength = Math.PI * 2 ) {\n\n\t\tsuper( 0, radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength );\n\n\t\tthis.type = 'ConeBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\theight: height,\n\t\t\tradialSegments: radialSegments,\n\t\t\theightSegments: heightSegments,\n\t\t\topenEnded: openEnded,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t}\n\n}\n\nclass PolyhedronBufferGeometry extends BufferGeometry {\n\n\tconstructor( vertices, indices, radius = 1, detail = 0 ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'PolyhedronBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tvertices: vertices,\n\t\t\tindices: indices,\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t\t// default buffer data\n\n\t\tconst vertexBuffer = [];\n\t\tconst uvBuffer = [];\n\n\t\t// the subdivision creates the vertex buffer data\n\n\t\tsubdivide( detail );\n\n\t\t// all vertices should lie on a conceptual sphere with a given radius\n\n\t\tapplyRadius( radius );\n\n\t\t// finally, create the uv data\n\n\t\tgenerateUVs();\n\n\t\t// build non-indexed geometry\n\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertexBuffer, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( vertexBuffer.slice(), 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvBuffer, 2 ) );\n\n\t\tif ( detail === 0 ) {\n\n\t\t\tthis.computeVertexNormals(); // flat normals\n\n\t\t} else {\n\n\t\t\tthis.normalizeNormals(); // smooth normals\n\n\t\t}\n\n\t\t// helper functions\n\n\t\tfunction subdivide( detail ) {\n\n\t\t\tconst a = new Vector3();\n\t\t\tconst b = new Vector3();\n\t\t\tconst c = new Vector3();\n\n\t\t\t// iterate over all faces and apply a subdivison with the given detail value\n\n\t\t\tfor ( let i = 0; i < indices.length; i += 3 ) {\n\n\t\t\t\t// get the vertices of the face\n\n\t\t\t\tgetVertexByIndex( indices[ i + 0 ], a );\n\t\t\t\tgetVertexByIndex( indices[ i + 1 ], b );\n\t\t\t\tgetVertexByIndex( indices[ i + 2 ], c );\n\n\t\t\t\t// perform subdivision\n\n\t\t\t\tsubdivideFace( a, b, c, detail );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction subdivideFace( a, b, c, detail ) {\n\n\t\t\tconst cols = detail + 1;\n\n\t\t\t// we use this multidimensional array as a data structure for creating the subdivision\n\n\t\t\tconst v = [];\n\n\t\t\t// construct all of the vertices for this subdivision\n\n\t\t\tfor ( let i = 0; i <= cols; i ++ ) {\n\n\t\t\t\tv[ i ] = [];\n\n\t\t\t\tconst aj = a.clone().lerp( c, i / cols );\n\t\t\t\tconst bj = b.clone().lerp( c, i / cols );\n\n\t\t\t\tconst rows = cols - i;\n\n\t\t\t\tfor ( let j = 0; j <= rows; j ++ ) {\n\n\t\t\t\t\tif ( j === 0 && i === cols ) {\n\n\t\t\t\t\t\tv[ i ][ j ] = aj;\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tv[ i ][ j ] = aj.clone().lerp( bj, j / rows );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// construct all of the faces\n\n\t\t\tfor ( let i = 0; i < cols; i ++ ) {\n\n\t\t\t\tfor ( let j = 0; j < 2 * ( cols - i ) - 1; j ++ ) {\n\n\t\t\t\t\tconst k = Math.floor( j / 2 );\n\n\t\t\t\t\tif ( j % 2 === 0 ) {\n\n\t\t\t\t\t\tpushVertex( v[ i ][ k + 1 ] );\n\t\t\t\t\t\tpushVertex( v[ i + 1 ][ k ] );\n\t\t\t\t\t\tpushVertex( v[ i ][ k ] );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tpushVertex( v[ i ][ k + 1 ] );\n\t\t\t\t\t\tpushVertex( v[ i + 1 ][ k + 1 ] );\n\t\t\t\t\t\tpushVertex( v[ i + 1 ][ k ] );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction applyRadius( radius ) {\n\n\t\t\tconst vertex = new Vector3();\n\n\t\t\t// iterate over the entire buffer and apply the radius to each vertex\n\n\t\t\tfor ( let i = 0; i < vertexBuffer.length; i += 3 ) {\n\n\t\t\t\tvertex.x = vertexBuffer[ i + 0 ];\n\t\t\t\tvertex.y = vertexBuffer[ i + 1 ];\n\t\t\t\tvertex.z = vertexBuffer[ i + 2 ];\n\n\t\t\t\tvertex.normalize().multiplyScalar( radius );\n\n\t\t\t\tvertexBuffer[ i + 0 ] = vertex.x;\n\t\t\t\tvertexBuffer[ i + 1 ] = vertex.y;\n\t\t\t\tvertexBuffer[ i + 2 ] = vertex.z;\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction generateUVs() {\n\n\t\t\tconst vertex = new Vector3();\n\n\t\t\tfor ( let i = 0; i < vertexBuffer.length; i += 3 ) {\n\n\t\t\t\tvertex.x = vertexBuffer[ i + 0 ];\n\t\t\t\tvertex.y = vertexBuffer[ i + 1 ];\n\t\t\t\tvertex.z = vertexBuffer[ i + 2 ];\n\n\t\t\t\tconst u = azimuth( vertex ) / 2 / Math.PI + 0.5;\n\t\t\t\tconst v = inclination( vertex ) / Math.PI + 0.5;\n\t\t\t\tuvBuffer.push( u, 1 - v );\n\n\t\t\t}\n\n\t\t\tcorrectUVs();\n\n\t\t\tcorrectSeam();\n\n\t\t}\n\n\t\tfunction correctSeam() {\n\n\t\t\t// handle case when face straddles the seam, see #3269\n\n\t\t\tfor ( let i = 0; i < uvBuffer.length; i += 6 ) {\n\n\t\t\t\t// uv data of a single face\n\n\t\t\t\tconst x0 = uvBuffer[ i + 0 ];\n\t\t\t\tconst x1 = uvBuffer[ i + 2 ];\n\t\t\t\tconst x2 = uvBuffer[ i + 4 ];\n\n\t\t\t\tconst max = Math.max( x0, x1, x2 );\n\t\t\t\tconst min = Math.min( x0, x1, x2 );\n\n\t\t\t\t// 0.9 is somewhat arbitrary\n\n\t\t\t\tif ( max > 0.9 && min < 0.1 ) {\n\n\t\t\t\t\tif ( x0 < 0.2 ) uvBuffer[ i + 0 ] += 1;\n\t\t\t\t\tif ( x1 < 0.2 ) uvBuffer[ i + 2 ] += 1;\n\t\t\t\t\tif ( x2 < 0.2 ) uvBuffer[ i + 4 ] += 1;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction pushVertex( vertex ) {\n\n\t\t\tvertexBuffer.push( vertex.x, vertex.y, vertex.z );\n\n\t\t}\n\n\t\tfunction getVertexByIndex( index, vertex ) {\n\n\t\t\tconst stride = index * 3;\n\n\t\t\tvertex.x = vertices[ stride + 0 ];\n\t\t\tvertex.y = vertices[ stride + 1 ];\n\t\t\tvertex.z = vertices[ stride + 2 ];\n\n\t\t}\n\n\t\tfunction correctUVs() {\n\n\t\t\tconst a = new Vector3();\n\t\t\tconst b = new Vector3();\n\t\t\tconst c = new Vector3();\n\n\t\t\tconst centroid = new Vector3();\n\n\t\t\tconst uvA = new Vector2();\n\t\t\tconst uvB = new Vector2();\n\t\t\tconst uvC = new Vector2();\n\n\t\t\tfor ( let i = 0, j = 0; i < vertexBuffer.length; i += 9, j += 6 ) {\n\n\t\t\t\ta.set( vertexBuffer[ i + 0 ], vertexBuffer[ i + 1 ], vertexBuffer[ i + 2 ] );\n\t\t\t\tb.set( vertexBuffer[ i + 3 ], vertexBuffer[ i + 4 ], vertexBuffer[ i + 5 ] );\n\t\t\t\tc.set( vertexBuffer[ i + 6 ], vertexBuffer[ i + 7 ], vertexBuffer[ i + 8 ] );\n\n\t\t\t\tuvA.set( uvBuffer[ j + 0 ], uvBuffer[ j + 1 ] );\n\t\t\t\tuvB.set( uvBuffer[ j + 2 ], uvBuffer[ j + 3 ] );\n\t\t\t\tuvC.set( uvBuffer[ j + 4 ], uvBuffer[ j + 5 ] );\n\n\t\t\t\tcentroid.copy( a ).add( b ).add( c ).divideScalar( 3 );\n\n\t\t\t\tconst azi = azimuth( centroid );\n\n\t\t\t\tcorrectUV( uvA, j + 0, a, azi );\n\t\t\t\tcorrectUV( uvB, j + 2, b, azi );\n\t\t\t\tcorrectUV( uvC, j + 4, c, azi );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction correctUV( uv, stride, vector, azimuth ) {\n\n\t\t\tif ( ( azimuth < 0 ) && ( uv.x === 1 ) ) {\n\n\t\t\t\tuvBuffer[ stride ] = uv.x - 1;\n\n\t\t\t}\n\n\t\t\tif ( ( vector.x === 0 ) && ( vector.z === 0 ) ) {\n\n\t\t\t\tuvBuffer[ stride ] = azimuth / 2 / Math.PI + 0.5;\n\n\t\t\t}\n\n\t\t}\n\n\t\t// Angle around the Y axis, counter-clockwise when looking from above.\n\n\t\tfunction azimuth( vector ) {\n\n\t\t\treturn Math.atan2( vector.z, - vector.x );\n\n\t\t}\n\n\n\t\t// Angle above the XZ plane.\n\n\t\tfunction inclination( vector ) {\n\n\t\t\treturn Math.atan2( - vector.y, Math.sqrt( ( vector.x * vector.x ) + ( vector.z * vector.z ) ) );\n\n\t\t}\n\n\t}\n\n}\n\nclass DodecahedronBufferGeometry extends PolyhedronBufferGeometry {\n\n\tconstructor( radius = 1, detail = 0 ) {\n\n\t\tconst t = ( 1 + Math.sqrt( 5 ) ) / 2;\n\t\tconst r = 1 / t;\n\n\t\tconst vertices = [\n\n\t\t\t// (±1, ±1, ±1)\n\t\t\t- 1, - 1, - 1,\t- 1, - 1, 1,\n\t\t\t- 1, 1, - 1, - 1, 1, 1,\n\t\t\t1, - 1, - 1, 1, - 1, 1,\n\t\t\t1, 1, - 1, 1, 1, 1,\n\n\t\t\t// (0, ±1/φ, ±φ)\n\t\t\t0, - r, - t, 0, - r, t,\n\t\t\t0, r, - t, 0, r, t,\n\n\t\t\t// (±1/φ, ±φ, 0)\n\t\t\t- r, - t, 0, - r, t, 0,\n\t\t\tr, - t, 0, r, t, 0,\n\n\t\t\t// (±φ, 0, ±1/φ)\n\t\t\t- t, 0, - r, t, 0, - r,\n\t\t\t- t, 0, r, t, 0, r\n\t\t];\n\n\t\tconst indices = [\n\t\t\t3, 11, 7, \t3, 7, 15, \t3, 15, 13,\n\t\t\t7, 19, 17, \t7, 17, 6, \t7, 6, 15,\n\t\t\t17, 4, 8, \t17, 8, 10, \t17, 10, 6,\n\t\t\t8, 0, 16, \t8, 16, 2, \t8, 2, 10,\n\t\t\t0, 12, 1, \t0, 1, 18, \t0, 18, 16,\n\t\t\t6, 10, 2, \t6, 2, 13, \t6, 13, 15,\n\t\t\t2, 16, 18, \t2, 18, 3, \t2, 3, 13,\n\t\t\t18, 1, 9, \t18, 9, 11, \t18, 11, 3,\n\t\t\t4, 14, 12, \t4, 12, 0, \t4, 0, 8,\n\t\t\t11, 9, 5, \t11, 5, 19, \t11, 19, 7,\n\t\t\t19, 5, 14, \t19, 14, 4, \t19, 4, 17,\n\t\t\t1, 12, 14, \t1, 14, 5, \t1, 5, 9\n\t\t];\n\n\t\tsuper( vertices, indices, radius, detail );\n\n\t\tthis.type = 'DodecahedronBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t}\n\n}\n\nclass DodecahedronGeometry extends Geometry {\n\n\tconstructor( radius, detail ) {\n\n\t\tsuper();\n\t\tthis.type = 'DodecahedronGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t\tthis.fromBufferGeometry( new DodecahedronBufferGeometry( radius, detail ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nconst _v0$2 = new Vector3();\nconst _v1$5 = new Vector3();\nconst _normal$1 = new Vector3();\nconst _triangle = new Triangle();\n\nclass EdgesGeometry extends BufferGeometry {\n\n\tconstructor( geometry, thresholdAngle ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'EdgesGeometry';\n\n\t\tthis.parameters = {\n\t\t\tthresholdAngle: thresholdAngle\n\t\t};\n\n\t\tthresholdAngle = ( thresholdAngle !== undefined ) ? thresholdAngle : 1;\n\n\t\tif ( geometry.isGeometry ) {\n\n\t\t\tgeometry = new BufferGeometry().fromGeometry( geometry );\n\n\t\t}\n\n\t\tconst precisionPoints = 4;\n\t\tconst precision = Math.pow( 10, precisionPoints );\n\t\tconst thresholdDot = Math.cos( MathUtils.DEG2RAD * thresholdAngle );\n\n\t\tconst indexAttr = geometry.getIndex();\n\t\tconst positionAttr = geometry.getAttribute( 'position' );\n\t\tconst indexCount = indexAttr ? indexAttr.count : positionAttr.count;\n\n\t\tconst indexArr = [ 0, 0, 0 ];\n\t\tconst vertKeys = [ 'a', 'b', 'c' ];\n\t\tconst hashes = new Array( 3 );\n\n\t\tconst edgeData = {};\n\t\tconst vertices = [];\n\t\tfor ( let i = 0; i < indexCount; i += 3 ) {\n\n\t\t\tif ( indexAttr ) {\n\n\t\t\t\tindexArr[ 0 ] = indexAttr.getX( i );\n\t\t\t\tindexArr[ 1 ] = indexAttr.getX( i + 1 );\n\t\t\t\tindexArr[ 2 ] = indexAttr.getX( i + 2 );\n\n\t\t\t} else {\n\n\t\t\t\tindexArr[ 0 ] = i;\n\t\t\t\tindexArr[ 1 ] = i + 1;\n\t\t\t\tindexArr[ 2 ] = i + 2;\n\n\t\t\t}\n\n\t\t\tconst { a, b, c } = _triangle;\n\t\t\ta.fromBufferAttribute( positionAttr, indexArr[ 0 ] );\n\t\t\tb.fromBufferAttribute( positionAttr, indexArr[ 1 ] );\n\t\t\tc.fromBufferAttribute( positionAttr, indexArr[ 2 ] );\n\t\t\t_triangle.getNormal( _normal$1 );\n\n\t\t\t// create hashes for the edge from the vertices\n\t\t\thashes[ 0 ] = `${ Math.round( a.x * precision ) },${ Math.round( a.y * precision ) },${ Math.round( a.z * precision ) }`;\n\t\t\thashes[ 1 ] = `${ Math.round( b.x * precision ) },${ Math.round( b.y * precision ) },${ Math.round( b.z * precision ) }`;\n\t\t\thashes[ 2 ] = `${ Math.round( c.x * precision ) },${ Math.round( c.y * precision ) },${ Math.round( c.z * precision ) }`;\n\n\t\t\t// skip degenerate triangles\n\t\t\tif ( hashes[ 0 ] === hashes[ 1 ] || hashes[ 1 ] === hashes[ 2 ] || hashes[ 2 ] === hashes[ 0 ] ) {\n\n\t\t\t\tcontinue;\n\n\t\t\t}\n\n\t\t\t// iterate over every edge\n\t\t\tfor ( let j = 0; j < 3; j ++ ) {\n\n\t\t\t\t// get the first and next vertex making up the edge\n\t\t\t\tconst jNext = ( j + 1 ) % 3;\n\t\t\t\tconst vecHash0 = hashes[ j ];\n\t\t\t\tconst vecHash1 = hashes[ jNext ];\n\t\t\t\tconst v0 = _triangle[ vertKeys[ j ] ];\n\t\t\t\tconst v1 = _triangle[ vertKeys[ jNext ] ];\n\n\t\t\t\tconst hash = `${ vecHash0 }_${ vecHash1 }`;\n\t\t\t\tconst reverseHash = `${ vecHash1 }_${ vecHash0 }`;\n\n\t\t\t\tif ( reverseHash in edgeData && edgeData[ reverseHash ] ) {\n\n\t\t\t\t\t// if we found a sibling edge add it into the vertex array if\n\t\t\t\t\t// it meets the angle threshold and delete the edge from the map.\n\t\t\t\t\tif ( _normal$1.dot( edgeData[ reverseHash ].normal ) <= thresholdDot ) {\n\n\t\t\t\t\t\tvertices.push( v0.x, v0.y, v0.z );\n\t\t\t\t\t\tvertices.push( v1.x, v1.y, v1.z );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tedgeData[ reverseHash ] = null;\n\n\t\t\t\t} else if ( ! ( hash in edgeData ) ) {\n\n\t\t\t\t\t// if we've already got an edge here then skip adding a new one\n\t\t\t\t\tedgeData[ hash ] = {\n\n\t\t\t\t\t\tindex0: indexArr[ j ],\n\t\t\t\t\t\tindex1: indexArr[ jNext ],\n\t\t\t\t\t\tnormal: _normal$1.clone(),\n\n\t\t\t\t\t};\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\t// iterate over all remaining, unmatched edges and add them to the vertex array\n\t\tfor ( const key in edgeData ) {\n\n\t\t\tif ( edgeData[ key ] ) {\n\n\t\t\t\tconst { index0, index1 } = edgeData[ key ];\n\t\t\t\t_v0$2.fromBufferAttribute( positionAttr, index0 );\n\t\t\t\t_v1$5.fromBufferAttribute( positionAttr, index1 );\n\n\t\t\t\tvertices.push( _v0$2.x, _v0$2.y, _v0$2.z );\n\t\t\t\tvertices.push( _v1$5.x, _v1$5.y, _v1$5.z );\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\n\t}\n\n}\n\n/**\n * Port from https://github.com/mapbox/earcut (v2.2.2)\n */\n\nconst Earcut = {\n\n\ttriangulate: function ( data, holeIndices, dim ) {\n\n\t\tdim = dim || 2;\n\n\t\tconst hasHoles = holeIndices && holeIndices.length;\n\t\tconst outerLen = hasHoles ? holeIndices[ 0 ] * dim : data.length;\n\t\tlet outerNode = linkedList( data, 0, outerLen, dim, true );\n\t\tconst triangles = [];\n\n\t\tif ( ! outerNode || outerNode.next === outerNode.prev ) return triangles;\n\n\t\tlet minX, minY, maxX, maxY, x, y, invSize;\n\n\t\tif ( hasHoles ) outerNode = eliminateHoles( data, holeIndices, outerNode, dim );\n\n\t\t// if the shape is not too simple, we'll use z-order curve hash later; calculate polygon bbox\n\t\tif ( data.length > 80 * dim ) {\n\n\t\t\tminX = maxX = data[ 0 ];\n\t\t\tminY = maxY = data[ 1 ];\n\n\t\t\tfor ( let i = dim; i < outerLen; i += dim ) {\n\n\t\t\t\tx = data[ i ];\n\t\t\t\ty = data[ i + 1 ];\n\t\t\t\tif ( x < minX ) minX = x;\n\t\t\t\tif ( y < minY ) minY = y;\n\t\t\t\tif ( x > maxX ) maxX = x;\n\t\t\t\tif ( y > maxY ) maxY = y;\n\n\t\t\t}\n\n\t\t\t// minX, minY and invSize are later used to transform coords into integers for z-order calculation\n\t\t\tinvSize = Math.max( maxX - minX, maxY - minY );\n\t\t\tinvSize = invSize !== 0 ? 1 / invSize : 0;\n\n\t\t}\n\n\t\tearcutLinked( outerNode, triangles, dim, minX, minY, invSize );\n\n\t\treturn triangles;\n\n\t}\n\n};\n\n// create a circular doubly linked list from polygon points in the specified winding order\nfunction linkedList( data, start, end, dim, clockwise ) {\n\n\tlet i, last;\n\n\tif ( clockwise === ( signedArea( data, start, end, dim ) > 0 ) ) {\n\n\t\tfor ( i = start; i < end; i += dim ) last = insertNode( i, data[ i ], data[ i + 1 ], last );\n\n\t} else {\n\n\t\tfor ( i = end - dim; i >= start; i -= dim ) last = insertNode( i, data[ i ], data[ i + 1 ], last );\n\n\t}\n\n\tif ( last && equals( last, last.next ) ) {\n\n\t\tremoveNode( last );\n\t\tlast = last.next;\n\n\t}\n\n\treturn last;\n\n}\n\n// eliminate colinear or duplicate points\nfunction filterPoints( start, end ) {\n\n\tif ( ! start ) return start;\n\tif ( ! end ) end = start;\n\n\tlet p = start,\n\t\tagain;\n\tdo {\n\n\t\tagain = false;\n\n\t\tif ( ! p.steiner && ( equals( p, p.next ) || area( p.prev, p, p.next ) === 0 ) ) {\n\n\t\t\tremoveNode( p );\n\t\t\tp = end = p.prev;\n\t\t\tif ( p === p.next ) break;\n\t\t\tagain = true;\n\n\t\t} else {\n\n\t\t\tp = p.next;\n\n\t\t}\n\n\t} while ( again || p !== end );\n\n\treturn end;\n\n}\n\n// main ear slicing loop which triangulates a polygon (given as a linked list)\nfunction earcutLinked( ear, triangles, dim, minX, minY, invSize, pass ) {\n\n\tif ( ! ear ) return;\n\n\t// interlink polygon nodes in z-order\n\tif ( ! pass && invSize ) indexCurve( ear, minX, minY, invSize );\n\n\tlet stop = ear,\n\t\tprev, next;\n\n\t// iterate through ears, slicing them one by one\n\twhile ( ear.prev !== ear.next ) {\n\n\t\tprev = ear.prev;\n\t\tnext = ear.next;\n\n\t\tif ( invSize ? isEarHashed( ear, minX, minY, invSize ) : isEar( ear ) ) {\n\n\t\t\t// cut off the triangle\n\t\t\ttriangles.push( prev.i / dim );\n\t\t\ttriangles.push( ear.i / dim );\n\t\t\ttriangles.push( next.i / dim );\n\n\t\t\tremoveNode( ear );\n\n\t\t\t// skipping the next vertex leads to less sliver triangles\n\t\t\tear = next.next;\n\t\t\tstop = next.next;\n\n\t\t\tcontinue;\n\n\t\t}\n\n\t\tear = next;\n\n\t\t// if we looped through the whole remaining polygon and can't find any more ears\n\t\tif ( ear === stop ) {\n\n\t\t\t// try filtering points and slicing again\n\t\t\tif ( ! pass ) {\n\n\t\t\t\tearcutLinked( filterPoints( ear ), triangles, dim, minX, minY, invSize, 1 );\n\n\t\t\t\t// if this didn't work, try curing all small self-intersections locally\n\n\t\t\t} else if ( pass === 1 ) {\n\n\t\t\t\tear = cureLocalIntersections( filterPoints( ear ), triangles, dim );\n\t\t\t\tearcutLinked( ear, triangles, dim, minX, minY, invSize, 2 );\n\n\t\t\t\t// as a last resort, try splitting the remaining polygon into two\n\n\t\t\t} else if ( pass === 2 ) {\n\n\t\t\t\tsplitEarcut( ear, triangles, dim, minX, minY, invSize );\n\n\t\t\t}\n\n\t\t\tbreak;\n\n\t\t}\n\n\t}\n\n}\n\n// check whether a polygon node forms a valid ear with adjacent nodes\nfunction isEar( ear ) {\n\n\tconst a = ear.prev,\n\t\tb = ear,\n\t\tc = ear.next;\n\n\tif ( area( a, b, c ) >= 0 ) return false; // reflex, can't be an ear\n\n\t// now make sure we don't have other points inside the potential ear\n\tlet p = ear.next.next;\n\n\twhile ( p !== ear.prev ) {\n\n\t\tif ( pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y ) &&\n\t\t\tarea( p.prev, p, p.next ) >= 0 ) return false;\n\t\tp = p.next;\n\n\t}\n\n\treturn true;\n\n}\n\nfunction isEarHashed( ear, minX, minY, invSize ) {\n\n\tconst a = ear.prev,\n\t\tb = ear,\n\t\tc = ear.next;\n\n\tif ( area( a, b, c ) >= 0 ) return false; // reflex, can't be an ear\n\n\t// triangle bbox; min & max are calculated like this for speed\n\tconst minTX = a.x < b.x ? ( a.x < c.x ? a.x : c.x ) : ( b.x < c.x ? b.x : c.x ),\n\t\tminTY = a.y < b.y ? ( a.y < c.y ? a.y : c.y ) : ( b.y < c.y ? b.y : c.y ),\n\t\tmaxTX = a.x > b.x ? ( a.x > c.x ? a.x : c.x ) : ( b.x > c.x ? b.x : c.x ),\n\t\tmaxTY = a.y > b.y ? ( a.y > c.y ? a.y : c.y ) : ( b.y > c.y ? b.y : c.y );\n\n\t// z-order range for the current triangle bbox;\n\tconst minZ = zOrder( minTX, minTY, minX, minY, invSize ),\n\t\tmaxZ = zOrder( maxTX, maxTY, minX, minY, invSize );\n\n\tlet p = ear.prevZ,\n\t\tn = ear.nextZ;\n\n\t// look for points inside the triangle in both directions\n\twhile ( p && p.z >= minZ && n && n.z <= maxZ ) {\n\n\t\tif ( p !== ear.prev && p !== ear.next &&\n\t\t\tpointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y ) &&\n\t\t\tarea( p.prev, p, p.next ) >= 0 ) return false;\n\t\tp = p.prevZ;\n\n\t\tif ( n !== ear.prev && n !== ear.next &&\n\t\t\tpointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, n.x, n.y ) &&\n\t\t\tarea( n.prev, n, n.next ) >= 0 ) return false;\n\t\tn = n.nextZ;\n\n\t}\n\n\t// look for remaining points in decreasing z-order\n\twhile ( p && p.z >= minZ ) {\n\n\t\tif ( p !== ear.prev && p !== ear.next &&\n\t\t\tpointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y ) &&\n\t\t\tarea( p.prev, p, p.next ) >= 0 ) return false;\n\t\tp = p.prevZ;\n\n\t}\n\n\t// look for remaining points in increasing z-order\n\twhile ( n && n.z <= maxZ ) {\n\n\t\tif ( n !== ear.prev && n !== ear.next &&\n\t\t\tpointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, n.x, n.y ) &&\n\t\t\tarea( n.prev, n, n.next ) >= 0 ) return false;\n\t\tn = n.nextZ;\n\n\t}\n\n\treturn true;\n\n}\n\n// go through all polygon nodes and cure small local self-intersections\nfunction cureLocalIntersections( start, triangles, dim ) {\n\n\tlet p = start;\n\tdo {\n\n\t\tconst a = p.prev,\n\t\t\tb = p.next.next;\n\n\t\tif ( ! equals( a, b ) && intersects( a, p, p.next, b ) && locallyInside( a, b ) && locallyInside( b, a ) ) {\n\n\t\t\ttriangles.push( a.i / dim );\n\t\t\ttriangles.push( p.i / dim );\n\t\t\ttriangles.push( b.i / dim );\n\n\t\t\t// remove two nodes involved\n\t\t\tremoveNode( p );\n\t\t\tremoveNode( p.next );\n\n\t\t\tp = start = b;\n\n\t\t}\n\n\t\tp = p.next;\n\n\t} while ( p !== start );\n\n\treturn filterPoints( p );\n\n}\n\n// try splitting polygon into two and triangulate them independently\nfunction splitEarcut( start, triangles, dim, minX, minY, invSize ) {\n\n\t// look for a valid diagonal that divides the polygon into two\n\tlet a = start;\n\tdo {\n\n\t\tlet b = a.next.next;\n\t\twhile ( b !== a.prev ) {\n\n\t\t\tif ( a.i !== b.i && isValidDiagonal( a, b ) ) {\n\n\t\t\t\t// split the polygon in two by the diagonal\n\t\t\t\tlet c = splitPolygon( a, b );\n\n\t\t\t\t// filter colinear points around the cuts\n\t\t\t\ta = filterPoints( a, a.next );\n\t\t\t\tc = filterPoints( c, c.next );\n\n\t\t\t\t// run earcut on each half\n\t\t\t\tearcutLinked( a, triangles, dim, minX, minY, invSize );\n\t\t\t\tearcutLinked( c, triangles, dim, minX, minY, invSize );\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t\tb = b.next;\n\n\t\t}\n\n\t\ta = a.next;\n\n\t} while ( a !== start );\n\n}\n\n// link every hole into the outer loop, producing a single-ring polygon without holes\nfunction eliminateHoles( data, holeIndices, outerNode, dim ) {\n\n\tconst queue = [];\n\tlet i, len, start, end, list;\n\n\tfor ( i = 0, len = holeIndices.length; i < len; i ++ ) {\n\n\t\tstart = holeIndices[ i ] * dim;\n\t\tend = i < len - 1 ? holeIndices[ i + 1 ] * dim : data.length;\n\t\tlist = linkedList( data, start, end, dim, false );\n\t\tif ( list === list.next ) list.steiner = true;\n\t\tqueue.push( getLeftmost( list ) );\n\n\t}\n\n\tqueue.sort( compareX );\n\n\t// process holes from left to right\n\tfor ( i = 0; i < queue.length; i ++ ) {\n\n\t\teliminateHole( queue[ i ], outerNode );\n\t\touterNode = filterPoints( outerNode, outerNode.next );\n\n\t}\n\n\treturn outerNode;\n\n}\n\nfunction compareX( a, b ) {\n\n\treturn a.x - b.x;\n\n}\n\n// find a bridge between vertices that connects hole with an outer ring and and link it\nfunction eliminateHole( hole, outerNode ) {\n\n\touterNode = findHoleBridge( hole, outerNode );\n\tif ( outerNode ) {\n\n\t\tconst b = splitPolygon( outerNode, hole );\n\n\t\t// filter collinear points around the cuts\n\t\tfilterPoints( outerNode, outerNode.next );\n\t\tfilterPoints( b, b.next );\n\n\t}\n\n}\n\n// David Eberly's algorithm for finding a bridge between hole and outer polygon\nfunction findHoleBridge( hole, outerNode ) {\n\n\tlet p = outerNode;\n\tconst hx = hole.x;\n\tconst hy = hole.y;\n\tlet qx = - Infinity, m;\n\n\t// find a segment intersected by a ray from the hole's leftmost point to the left;\n\t// segment's endpoint with lesser x will be potential connection point\n\tdo {\n\n\t\tif ( hy <= p.y && hy >= p.next.y && p.next.y !== p.y ) {\n\n\t\t\tconst x = p.x + ( hy - p.y ) * ( p.next.x - p.x ) / ( p.next.y - p.y );\n\t\t\tif ( x <= hx && x > qx ) {\n\n\t\t\t\tqx = x;\n\t\t\t\tif ( x === hx ) {\n\n\t\t\t\t\tif ( hy === p.y ) return p;\n\t\t\t\t\tif ( hy === p.next.y ) return p.next;\n\n\t\t\t\t}\n\n\t\t\t\tm = p.x < p.next.x ? p : p.next;\n\n\t\t\t}\n\n\t\t}\n\n\t\tp = p.next;\n\n\t} while ( p !== outerNode );\n\n\tif ( ! m ) return null;\n\n\tif ( hx === qx ) return m; // hole touches outer segment; pick leftmost endpoint\n\n\t// look for points inside the triangle of hole point, segment intersection and endpoint;\n\t// if there are no points found, we have a valid connection;\n\t// otherwise choose the point of the minimum angle with the ray as connection point\n\n\tconst stop = m,\n\t\tmx = m.x,\n\t\tmy = m.y;\n\tlet tanMin = Infinity, tan;\n\n\tp = m;\n\n\tdo {\n\n\t\tif ( hx >= p.x && p.x >= mx && hx !== p.x &&\n\t\t\t\tpointInTriangle( hy < my ? hx : qx, hy, mx, my, hy < my ? qx : hx, hy, p.x, p.y ) ) {\n\n\t\t\ttan = Math.abs( hy - p.y ) / ( hx - p.x ); // tangential\n\n\t\t\tif ( locallyInside( p, hole ) && ( tan < tanMin || ( tan === tanMin && ( p.x > m.x || ( p.x === m.x && sectorContainsSector( m, p ) ) ) ) ) ) {\n\n\t\t\t\tm = p;\n\t\t\t\ttanMin = tan;\n\n\t\t\t}\n\n\t\t}\n\n\t\tp = p.next;\n\n\t} while ( p !== stop );\n\n\treturn m;\n\n}\n\n// whether sector in vertex m contains sector in vertex p in the same coordinates\nfunction sectorContainsSector( m, p ) {\n\n\treturn area( m.prev, m, p.prev ) < 0 && area( p.next, m, m.next ) < 0;\n\n}\n\n// interlink polygon nodes in z-order\nfunction indexCurve( start, minX, minY, invSize ) {\n\n\tlet p = start;\n\tdo {\n\n\t\tif ( p.z === null ) p.z = zOrder( p.x, p.y, minX, minY, invSize );\n\t\tp.prevZ = p.prev;\n\t\tp.nextZ = p.next;\n\t\tp = p.next;\n\n\t} while ( p !== start );\n\n\tp.prevZ.nextZ = null;\n\tp.prevZ = null;\n\n\tsortLinked( p );\n\n}\n\n// Simon Tatham's linked list merge sort algorithm\n// http://www.chiark.greenend.org.uk/~sgtatham/algorithms/listsort.html\nfunction sortLinked( list ) {\n\n\tlet i, p, q, e, tail, numMerges, pSize, qSize,\n\t\tinSize = 1;\n\n\tdo {\n\n\t\tp = list;\n\t\tlist = null;\n\t\ttail = null;\n\t\tnumMerges = 0;\n\n\t\twhile ( p ) {\n\n\t\t\tnumMerges ++;\n\t\t\tq = p;\n\t\t\tpSize = 0;\n\t\t\tfor ( i = 0; i < inSize; i ++ ) {\n\n\t\t\t\tpSize ++;\n\t\t\t\tq = q.nextZ;\n\t\t\t\tif ( ! q ) break;\n\n\t\t\t}\n\n\t\t\tqSize = inSize;\n\n\t\t\twhile ( pSize > 0 || ( qSize > 0 && q ) ) {\n\n\t\t\t\tif ( pSize !== 0 && ( qSize === 0 || ! q || p.z <= q.z ) ) {\n\n\t\t\t\t\te = p;\n\t\t\t\t\tp = p.nextZ;\n\t\t\t\t\tpSize --;\n\n\t\t\t\t} else {\n\n\t\t\t\t\te = q;\n\t\t\t\t\tq = q.nextZ;\n\t\t\t\t\tqSize --;\n\n\t\t\t\t}\n\n\t\t\t\tif ( tail ) tail.nextZ = e;\n\t\t\t\telse list = e;\n\n\t\t\t\te.prevZ = tail;\n\t\t\t\ttail = e;\n\n\t\t\t}\n\n\t\t\tp = q;\n\n\t\t}\n\n\t\ttail.nextZ = null;\n\t\tinSize *= 2;\n\n\t} while ( numMerges > 1 );\n\n\treturn list;\n\n}\n\n// z-order of a point given coords and inverse of the longer side of data bbox\nfunction zOrder( x, y, minX, minY, invSize ) {\n\n\t// coords are transformed into non-negative 15-bit integer range\n\tx = 32767 * ( x - minX ) * invSize;\n\ty = 32767 * ( y - minY ) * invSize;\n\n\tx = ( x | ( x << 8 ) ) & 0x00FF00FF;\n\tx = ( x | ( x << 4 ) ) & 0x0F0F0F0F;\n\tx = ( x | ( x << 2 ) ) & 0x33333333;\n\tx = ( x | ( x << 1 ) ) & 0x55555555;\n\n\ty = ( y | ( y << 8 ) ) & 0x00FF00FF;\n\ty = ( y | ( y << 4 ) ) & 0x0F0F0F0F;\n\ty = ( y | ( y << 2 ) ) & 0x33333333;\n\ty = ( y | ( y << 1 ) ) & 0x55555555;\n\n\treturn x | ( y << 1 );\n\n}\n\n// find the leftmost node of a polygon ring\nfunction getLeftmost( start ) {\n\n\tlet p = start,\n\t\tleftmost = start;\n\tdo {\n\n\t\tif ( p.x < leftmost.x || ( p.x === leftmost.x && p.y < leftmost.y ) ) leftmost = p;\n\t\tp = p.next;\n\n\t} while ( p !== start );\n\n\treturn leftmost;\n\n}\n\n// check if a point lies within a convex triangle\nfunction pointInTriangle( ax, ay, bx, by, cx, cy, px, py ) {\n\n\treturn ( cx - px ) * ( ay - py ) - ( ax - px ) * ( cy - py ) >= 0 &&\n\t\t\t( ax - px ) * ( by - py ) - ( bx - px ) * ( ay - py ) >= 0 &&\n\t\t\t( bx - px ) * ( cy - py ) - ( cx - px ) * ( by - py ) >= 0;\n\n}\n\n// check if a diagonal between two polygon nodes is valid (lies in polygon interior)\nfunction isValidDiagonal( a, b ) {\n\n\treturn a.next.i !== b.i && a.prev.i !== b.i && ! intersectsPolygon( a, b ) && // dones't intersect other edges\n\t\t( locallyInside( a, b ) && locallyInside( b, a ) && middleInside( a, b ) && // locally visible\n\t\t( area( a.prev, a, b.prev ) || area( a, b.prev, b ) ) || // does not create opposite-facing sectors\n\t\tequals( a, b ) && area( a.prev, a, a.next ) > 0 && area( b.prev, b, b.next ) > 0 ); // special zero-length case\n\n}\n\n// signed area of a triangle\nfunction area( p, q, r ) {\n\n\treturn ( q.y - p.y ) * ( r.x - q.x ) - ( q.x - p.x ) * ( r.y - q.y );\n\n}\n\n// check if two points are equal\nfunction equals( p1, p2 ) {\n\n\treturn p1.x === p2.x && p1.y === p2.y;\n\n}\n\n// check if two segments intersect\nfunction intersects( p1, q1, p2, q2 ) {\n\n\tconst o1 = sign( area( p1, q1, p2 ) );\n\tconst o2 = sign( area( p1, q1, q2 ) );\n\tconst o3 = sign( area( p2, q2, p1 ) );\n\tconst o4 = sign( area( p2, q2, q1 ) );\n\n\tif ( o1 !== o2 && o3 !== o4 ) return true; // general case\n\n\tif ( o1 === 0 && onSegment( p1, p2, q1 ) ) return true; // p1, q1 and p2 are collinear and p2 lies on p1q1\n\tif ( o2 === 0 && onSegment( p1, q2, q1 ) ) return true; // p1, q1 and q2 are collinear and q2 lies on p1q1\n\tif ( o3 === 0 && onSegment( p2, p1, q2 ) ) return true; // p2, q2 and p1 are collinear and p1 lies on p2q2\n\tif ( o4 === 0 && onSegment( p2, q1, q2 ) ) return true; // p2, q2 and q1 are collinear and q1 lies on p2q2\n\n\treturn false;\n\n}\n\n// for collinear points p, q, r, check if point q lies on segment pr\nfunction onSegment( p, q, r ) {\n\n\treturn q.x <= Math.max( p.x, r.x ) && q.x >= Math.min( p.x, r.x ) && q.y <= Math.max( p.y, r.y ) && q.y >= Math.min( p.y, r.y );\n\n}\n\nfunction sign( num ) {\n\n\treturn num > 0 ? 1 : num < 0 ? - 1 : 0;\n\n}\n\n// check if a polygon diagonal intersects any polygon segments\nfunction intersectsPolygon( a, b ) {\n\n\tlet p = a;\n\tdo {\n\n\t\tif ( p.i !== a.i && p.next.i !== a.i && p.i !== b.i && p.next.i !== b.i &&\n\t\t\t\tintersects( p, p.next, a, b ) ) return true;\n\t\tp = p.next;\n\n\t} while ( p !== a );\n\n\treturn false;\n\n}\n\n// check if a polygon diagonal is locally inside the polygon\nfunction locallyInside( a, b ) {\n\n\treturn area( a.prev, a, a.next ) < 0 ?\n\t\tarea( a, b, a.next ) >= 0 && area( a, a.prev, b ) >= 0 :\n\t\tarea( a, b, a.prev ) < 0 || area( a, a.next, b ) < 0;\n\n}\n\n// check if the middle point of a polygon diagonal is inside the polygon\nfunction middleInside( a, b ) {\n\n\tlet p = a,\n\t\tinside = false;\n\tconst px = ( a.x + b.x ) / 2,\n\t\tpy = ( a.y + b.y ) / 2;\n\tdo {\n\n\t\tif ( ( ( p.y > py ) !== ( p.next.y > py ) ) && p.next.y !== p.y &&\n\t\t\t\t( px < ( p.next.x - p.x ) * ( py - p.y ) / ( p.next.y - p.y ) + p.x ) )\n\t\t\tinside = ! inside;\n\t\tp = p.next;\n\n\t} while ( p !== a );\n\n\treturn inside;\n\n}\n\n// link two polygon vertices with a bridge; if the vertices belong to the same ring, it splits polygon into two;\n// if one belongs to the outer ring and another to a hole, it merges it into a single ring\nfunction splitPolygon( a, b ) {\n\n\tconst a2 = new Node( a.i, a.x, a.y ),\n\t\tb2 = new Node( b.i, b.x, b.y ),\n\t\tan = a.next,\n\t\tbp = b.prev;\n\n\ta.next = b;\n\tb.prev = a;\n\n\ta2.next = an;\n\tan.prev = a2;\n\n\tb2.next = a2;\n\ta2.prev = b2;\n\n\tbp.next = b2;\n\tb2.prev = bp;\n\n\treturn b2;\n\n}\n\n// create a node and optionally link it with previous one (in a circular doubly linked list)\nfunction insertNode( i, x, y, last ) {\n\n\tconst p = new Node( i, x, y );\n\n\tif ( ! last ) {\n\n\t\tp.prev = p;\n\t\tp.next = p;\n\n\t} else {\n\n\t\tp.next = last.next;\n\t\tp.prev = last;\n\t\tlast.next.prev = p;\n\t\tlast.next = p;\n\n\t}\n\n\treturn p;\n\n}\n\nfunction removeNode( p ) {\n\n\tp.next.prev = p.prev;\n\tp.prev.next = p.next;\n\n\tif ( p.prevZ ) p.prevZ.nextZ = p.nextZ;\n\tif ( p.nextZ ) p.nextZ.prevZ = p.prevZ;\n\n}\n\nfunction Node( i, x, y ) {\n\n\t// vertex index in coordinates array\n\tthis.i = i;\n\n\t// vertex coordinates\n\tthis.x = x;\n\tthis.y = y;\n\n\t// previous and next vertex nodes in a polygon ring\n\tthis.prev = null;\n\tthis.next = null;\n\n\t// z-order curve value\n\tthis.z = null;\n\n\t// previous and next nodes in z-order\n\tthis.prevZ = null;\n\tthis.nextZ = null;\n\n\t// indicates whether this is a steiner point\n\tthis.steiner = false;\n\n}\n\nfunction signedArea( data, start, end, dim ) {\n\n\tlet sum = 0;\n\tfor ( let i = start, j = end - dim; i < end; i += dim ) {\n\n\t\tsum += ( data[ j ] - data[ i ] ) * ( data[ i + 1 ] + data[ j + 1 ] );\n\t\tj = i;\n\n\t}\n\n\treturn sum;\n\n}\n\nconst ShapeUtils = {\n\n\t// calculate area of the contour polygon\n\n\tarea: function ( contour ) {\n\n\t\tconst n = contour.length;\n\t\tlet a = 0.0;\n\n\t\tfor ( let p = n - 1, q = 0; q < n; p = q ++ ) {\n\n\t\t\ta += contour[ p ].x * contour[ q ].y - contour[ q ].x * contour[ p ].y;\n\n\t\t}\n\n\t\treturn a * 0.5;\n\n\t},\n\n\tisClockWise: function ( pts ) {\n\n\t\treturn ShapeUtils.area( pts ) < 0;\n\n\t},\n\n\ttriangulateShape: function ( contour, holes ) {\n\n\t\tconst vertices = []; // flat array of vertices like [ x0,y0, x1,y1, x2,y2, ... ]\n\t\tconst holeIndices = []; // array of hole indices\n\t\tconst faces = []; // final array of vertex indices like [ [ a,b,d ], [ b,c,d ] ]\n\n\t\tremoveDupEndPts( contour );\n\t\taddContour( vertices, contour );\n\n\t\t//\n\n\t\tlet holeIndex = contour.length;\n\n\t\tholes.forEach( removeDupEndPts );\n\n\t\tfor ( let i = 0; i < holes.length; i ++ ) {\n\n\t\t\tholeIndices.push( holeIndex );\n\t\t\tholeIndex += holes[ i ].length;\n\t\t\taddContour( vertices, holes[ i ] );\n\n\t\t}\n\n\t\t//\n\n\t\tconst triangles = Earcut.triangulate( vertices, holeIndices );\n\n\t\t//\n\n\t\tfor ( let i = 0; i < triangles.length; i += 3 ) {\n\n\t\t\tfaces.push( triangles.slice( i, i + 3 ) );\n\n\t\t}\n\n\t\treturn faces;\n\n\t}\n\n};\n\nfunction removeDupEndPts( points ) {\n\n\tconst l = points.length;\n\n\tif ( l > 2 && points[ l - 1 ].equals( points[ 0 ] ) ) {\n\n\t\tpoints.pop();\n\n\t}\n\n}\n\nfunction addContour( vertices, contour ) {\n\n\tfor ( let i = 0; i < contour.length; i ++ ) {\n\n\t\tvertices.push( contour[ i ].x );\n\t\tvertices.push( contour[ i ].y );\n\n\t}\n\n}\n\n/**\n * Creates extruded geometry from a path shape.\n *\n * parameters = {\n *\n *  curveSegments: <int>, // number of points on the curves\n *  steps: <int>, // number of points for z-side extrusions / used for subdividing segments of extrude spline too\n *  depth: <float>, // Depth to extrude the shape\n *\n *  bevelEnabled: <bool>, // turn on bevel\n *  bevelThickness: <float>, // how deep into the original shape bevel goes\n *  bevelSize: <float>, // how far from shape outline (including bevelOffset) is bevel\n *  bevelOffset: <float>, // how far from shape outline does bevel start\n *  bevelSegments: <int>, // number of bevel layers\n *\n *  extrudePath: <THREE.Curve> // curve to extrude shape along\n *\n *  UVGenerator: <Object> // object that provides UV generator functions\n *\n * }\n */\n\nclass ExtrudeBufferGeometry extends BufferGeometry {\n\n\tconstructor( shapes, options ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'ExtrudeBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tshapes: shapes,\n\t\t\toptions: options\n\t\t};\n\n\t\tshapes = Array.isArray( shapes ) ? shapes : [ shapes ];\n\n\t\tconst scope = this;\n\n\t\tconst verticesArray = [];\n\t\tconst uvArray = [];\n\n\t\tfor ( let i = 0, l = shapes.length; i < l; i ++ ) {\n\n\t\t\tconst shape = shapes[ i ];\n\t\t\taddShape( shape );\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( verticesArray, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvArray, 2 ) );\n\n\t\tthis.computeVertexNormals();\n\n\t\t// functions\n\n\t\tfunction addShape( shape ) {\n\n\t\t\tconst placeholder = [];\n\n\t\t\t// options\n\n\t\t\tconst curveSegments = options.curveSegments !== undefined ? options.curveSegments : 12;\n\t\t\tconst steps = options.steps !== undefined ? options.steps : 1;\n\t\t\tlet depth = options.depth !== undefined ? options.depth : 100;\n\n\t\t\tlet bevelEnabled = options.bevelEnabled !== undefined ? options.bevelEnabled : true;\n\t\t\tlet bevelThickness = options.bevelThickness !== undefined ? options.bevelThickness : 6;\n\t\t\tlet bevelSize = options.bevelSize !== undefined ? options.bevelSize : bevelThickness - 2;\n\t\t\tlet bevelOffset = options.bevelOffset !== undefined ? options.bevelOffset : 0;\n\t\t\tlet bevelSegments = options.bevelSegments !== undefined ? options.bevelSegments : 3;\n\n\t\t\tconst extrudePath = options.extrudePath;\n\n\t\t\tconst uvgen = options.UVGenerator !== undefined ? options.UVGenerator : WorldUVGenerator;\n\n\t\t\t// deprecated options\n\n\t\t\tif ( options.amount !== undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.ExtrudeBufferGeometry: amount has been renamed to depth.' );\n\t\t\t\tdepth = options.amount;\n\n\t\t\t}\n\n\t\t\t//\n\n\t\t\tlet extrudePts, extrudeByPath = false;\n\t\t\tlet splineTube, binormal, normal, position2;\n\n\t\t\tif ( extrudePath ) {\n\n\t\t\t\textrudePts = extrudePath.getSpacedPoints( steps );\n\n\t\t\t\textrudeByPath = true;\n\t\t\t\tbevelEnabled = false; // bevels not supported for path extrusion\n\n\t\t\t\t// SETUP TNB variables\n\n\t\t\t\t// TODO1 - have a .isClosed in spline?\n\n\t\t\t\tsplineTube = extrudePath.computeFrenetFrames( steps, false );\n\n\t\t\t\t// console.log(splineTube, 'splineTube', splineTube.normals.length, 'steps', steps, 'extrudePts', extrudePts.length);\n\n\t\t\t\tbinormal = new Vector3();\n\t\t\t\tnormal = new Vector3();\n\t\t\t\tposition2 = new Vector3();\n\n\t\t\t}\n\n\t\t\t// Safeguards if bevels are not enabled\n\n\t\t\tif ( ! bevelEnabled ) {\n\n\t\t\t\tbevelSegments = 0;\n\t\t\t\tbevelThickness = 0;\n\t\t\t\tbevelSize = 0;\n\t\t\t\tbevelOffset = 0;\n\n\t\t\t}\n\n\t\t\t// Variables initialization\n\n\t\t\tconst shapePoints = shape.extractPoints( curveSegments );\n\n\t\t\tlet vertices = shapePoints.shape;\n\t\t\tconst holes = shapePoints.holes;\n\n\t\t\tconst reverse = ! ShapeUtils.isClockWise( vertices );\n\n\t\t\tif ( reverse ) {\n\n\t\t\t\tvertices = vertices.reverse();\n\n\t\t\t\t// Maybe we should also check if holes are in the opposite direction, just to be safe ...\n\n\t\t\t\tfor ( let h = 0, hl = holes.length; h < hl; h ++ ) {\n\n\t\t\t\t\tconst ahole = holes[ h ];\n\n\t\t\t\t\tif ( ShapeUtils.isClockWise( ahole ) ) {\n\n\t\t\t\t\t\tholes[ h ] = ahole.reverse();\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\n\t\t\tconst faces = ShapeUtils.triangulateShape( vertices, holes );\n\n\t\t\t/* Vertices */\n\n\t\t\tconst contour = vertices; // vertices has all points but contour has only points of circumference\n\n\t\t\tfor ( let h = 0, hl = holes.length; h < hl; h ++ ) {\n\n\t\t\t\tconst ahole = holes[ h ];\n\n\t\t\t\tvertices = vertices.concat( ahole );\n\n\t\t\t}\n\n\n\t\t\tfunction scalePt2( pt, vec, size ) {\n\n\t\t\t\tif ( ! vec ) console.error( 'THREE.ExtrudeGeometry: vec does not exist' );\n\n\t\t\t\treturn vec.clone().multiplyScalar( size ).add( pt );\n\n\t\t\t}\n\n\t\t\tconst vlen = vertices.length, flen = faces.length;\n\n\n\t\t\t// Find directions for point movement\n\n\n\t\t\tfunction getBevelVec( inPt, inPrev, inNext ) {\n\n\t\t\t\t// computes for inPt the corresponding point inPt' on a new contour\n\t\t\t\t//   shifted by 1 unit (length of normalized vector) to the left\n\t\t\t\t// if we walk along contour clockwise, this new contour is outside the old one\n\t\t\t\t//\n\t\t\t\t// inPt' is the intersection of the two lines parallel to the two\n\t\t\t\t//  adjacent edges of inPt at a distance of 1 unit on the left side.\n\n\t\t\t\tlet v_trans_x, v_trans_y, shrink_by; // resulting translation vector for inPt\n\n\t\t\t\t// good reading for geometry algorithms (here: line-line intersection)\n\t\t\t\t// http://geomalgorithms.com/a05-_intersect-1.html\n\n\t\t\t\tconst v_prev_x = inPt.x - inPrev.x,\n\t\t\t\t\tv_prev_y = inPt.y - inPrev.y;\n\t\t\t\tconst v_next_x = inNext.x - inPt.x,\n\t\t\t\t\tv_next_y = inNext.y - inPt.y;\n\n\t\t\t\tconst v_prev_lensq = ( v_prev_x * v_prev_x + v_prev_y * v_prev_y );\n\n\t\t\t\t// check for collinear edges\n\t\t\t\tconst collinear0 = ( v_prev_x * v_next_y - v_prev_y * v_next_x );\n\n\t\t\t\tif ( Math.abs( collinear0 ) > Number.EPSILON ) {\n\n\t\t\t\t\t// not collinear\n\n\t\t\t\t\t// length of vectors for normalizing\n\n\t\t\t\t\tconst v_prev_len = Math.sqrt( v_prev_lensq );\n\t\t\t\t\tconst v_next_len = Math.sqrt( v_next_x * v_next_x + v_next_y * v_next_y );\n\n\t\t\t\t\t// shift adjacent points by unit vectors to the left\n\n\t\t\t\t\tconst ptPrevShift_x = ( inPrev.x - v_prev_y / v_prev_len );\n\t\t\t\t\tconst ptPrevShift_y = ( inPrev.y + v_prev_x / v_prev_len );\n\n\t\t\t\t\tconst ptNextShift_x = ( inNext.x - v_next_y / v_next_len );\n\t\t\t\t\tconst ptNextShift_y = ( inNext.y + v_next_x / v_next_len );\n\n\t\t\t\t\t// scaling factor for v_prev to intersection point\n\n\t\t\t\t\tconst sf = ( ( ptNextShift_x - ptPrevShift_x ) * v_next_y -\n\t\t\t\t\t\t\t( ptNextShift_y - ptPrevShift_y ) * v_next_x ) /\n\t\t\t\t\t\t( v_prev_x * v_next_y - v_prev_y * v_next_x );\n\n\t\t\t\t\t// vector from inPt to intersection point\n\n\t\t\t\t\tv_trans_x = ( ptPrevShift_x + v_prev_x * sf - inPt.x );\n\t\t\t\t\tv_trans_y = ( ptPrevShift_y + v_prev_y * sf - inPt.y );\n\n\t\t\t\t\t// Don't normalize!, otherwise sharp corners become ugly\n\t\t\t\t\t//  but prevent crazy spikes\n\t\t\t\t\tconst v_trans_lensq = ( v_trans_x * v_trans_x + v_trans_y * v_trans_y );\n\t\t\t\t\tif ( v_trans_lensq <= 2 ) {\n\n\t\t\t\t\t\treturn new Vector2( v_trans_x, v_trans_y );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tshrink_by = Math.sqrt( v_trans_lensq / 2 );\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// handle special case of collinear edges\n\n\t\t\t\t\tlet direction_eq = false; // assumes: opposite\n\n\t\t\t\t\tif ( v_prev_x > Number.EPSILON ) {\n\n\t\t\t\t\t\tif ( v_next_x > Number.EPSILON ) {\n\n\t\t\t\t\t\t\tdirection_eq = true;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tif ( v_prev_x < - Number.EPSILON ) {\n\n\t\t\t\t\t\t\tif ( v_next_x < - Number.EPSILON ) {\n\n\t\t\t\t\t\t\t\tdirection_eq = true;\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tif ( Math.sign( v_prev_y ) === Math.sign( v_next_y ) ) {\n\n\t\t\t\t\t\t\t\tdirection_eq = true;\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( direction_eq ) {\n\n\t\t\t\t\t\t// console.log(\"Warning: lines are a straight sequence\");\n\t\t\t\t\t\tv_trans_x = - v_prev_y;\n\t\t\t\t\t\tv_trans_y = v_prev_x;\n\t\t\t\t\t\tshrink_by = Math.sqrt( v_prev_lensq );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\t// console.log(\"Warning: lines are a straight spike\");\n\t\t\t\t\t\tv_trans_x = v_prev_x;\n\t\t\t\t\t\tv_trans_y = v_prev_y;\n\t\t\t\t\t\tshrink_by = Math.sqrt( v_prev_lensq / 2 );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\treturn new Vector2( v_trans_x / shrink_by, v_trans_y / shrink_by );\n\n\t\t\t}\n\n\n\t\t\tconst contourMovements = [];\n\n\t\t\tfor ( let i = 0, il = contour.length, j = il - 1, k = i + 1; i < il; i ++, j ++, k ++ ) {\n\n\t\t\t\tif ( j === il ) j = 0;\n\t\t\t\tif ( k === il ) k = 0;\n\n\t\t\t\t//  (j)---(i)---(k)\n\t\t\t\t// console.log('i,j,k', i, j , k)\n\n\t\t\t\tcontourMovements[ i ] = getBevelVec( contour[ i ], contour[ j ], contour[ k ] );\n\n\t\t\t}\n\n\t\t\tconst holesMovements = [];\n\t\t\tlet oneHoleMovements, verticesMovements = contourMovements.concat();\n\n\t\t\tfor ( let h = 0, hl = holes.length; h < hl; h ++ ) {\n\n\t\t\t\tconst ahole = holes[ h ];\n\n\t\t\t\toneHoleMovements = [];\n\n\t\t\t\tfor ( let i = 0, il = ahole.length, j = il - 1, k = i + 1; i < il; i ++, j ++, k ++ ) {\n\n\t\t\t\t\tif ( j === il ) j = 0;\n\t\t\t\t\tif ( k === il ) k = 0;\n\n\t\t\t\t\t//  (j)---(i)---(k)\n\t\t\t\t\toneHoleMovements[ i ] = getBevelVec( ahole[ i ], ahole[ j ], ahole[ k ] );\n\n\t\t\t\t}\n\n\t\t\t\tholesMovements.push( oneHoleMovements );\n\t\t\t\tverticesMovements = verticesMovements.concat( oneHoleMovements );\n\n\t\t\t}\n\n\n\t\t\t// Loop bevelSegments, 1 for the front, 1 for the back\n\n\t\t\tfor ( let b = 0; b < bevelSegments; b ++ ) {\n\n\t\t\t\t//for ( b = bevelSegments; b > 0; b -- ) {\n\n\t\t\t\tconst t = b / bevelSegments;\n\t\t\t\tconst z = bevelThickness * Math.cos( t * Math.PI / 2 );\n\t\t\t\tconst bs = bevelSize * Math.sin( t * Math.PI / 2 ) + bevelOffset;\n\n\t\t\t\t// contract shape\n\n\t\t\t\tfor ( let i = 0, il = contour.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst vert = scalePt2( contour[ i ], contourMovements[ i ], bs );\n\n\t\t\t\t\tv( vert.x, vert.y, - z );\n\n\t\t\t\t}\n\n\t\t\t\t// expand holes\n\n\t\t\t\tfor ( let h = 0, hl = holes.length; h < hl; h ++ ) {\n\n\t\t\t\t\tconst ahole = holes[ h ];\n\t\t\t\t\toneHoleMovements = holesMovements[ h ];\n\n\t\t\t\t\tfor ( let i = 0, il = ahole.length; i < il; i ++ ) {\n\n\t\t\t\t\t\tconst vert = scalePt2( ahole[ i ], oneHoleMovements[ i ], bs );\n\n\t\t\t\t\t\tv( vert.x, vert.y, - z );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tconst bs = bevelSize + bevelOffset;\n\n\t\t\t// Back facing vertices\n\n\t\t\tfor ( let i = 0; i < vlen; i ++ ) {\n\n\t\t\t\tconst vert = bevelEnabled ? scalePt2( vertices[ i ], verticesMovements[ i ], bs ) : vertices[ i ];\n\n\t\t\t\tif ( ! extrudeByPath ) {\n\n\t\t\t\t\tv( vert.x, vert.y, 0 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// v( vert.x, vert.y + extrudePts[ 0 ].y, extrudePts[ 0 ].x );\n\n\t\t\t\t\tnormal.copy( splineTube.normals[ 0 ] ).multiplyScalar( vert.x );\n\t\t\t\t\tbinormal.copy( splineTube.binormals[ 0 ] ).multiplyScalar( vert.y );\n\n\t\t\t\t\tposition2.copy( extrudePts[ 0 ] ).add( normal ).add( binormal );\n\n\t\t\t\t\tv( position2.x, position2.y, position2.z );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// Add stepped vertices...\n\t\t\t// Including front facing vertices\n\n\t\t\tfor ( let s = 1; s <= steps; s ++ ) {\n\n\t\t\t\tfor ( let i = 0; i < vlen; i ++ ) {\n\n\t\t\t\t\tconst vert = bevelEnabled ? scalePt2( vertices[ i ], verticesMovements[ i ], bs ) : vertices[ i ];\n\n\t\t\t\t\tif ( ! extrudeByPath ) {\n\n\t\t\t\t\t\tv( vert.x, vert.y, depth / steps * s );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\t// v( vert.x, vert.y + extrudePts[ s - 1 ].y, extrudePts[ s - 1 ].x );\n\n\t\t\t\t\t\tnormal.copy( splineTube.normals[ s ] ).multiplyScalar( vert.x );\n\t\t\t\t\t\tbinormal.copy( splineTube.binormals[ s ] ).multiplyScalar( vert.y );\n\n\t\t\t\t\t\tposition2.copy( extrudePts[ s ] ).add( normal ).add( binormal );\n\n\t\t\t\t\t\tv( position2.x, position2.y, position2.z );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\n\t\t\t// Add bevel segments planes\n\n\t\t\t//for ( b = 1; b <= bevelSegments; b ++ ) {\n\t\t\tfor ( let b = bevelSegments - 1; b >= 0; b -- ) {\n\n\t\t\t\tconst t = b / bevelSegments;\n\t\t\t\tconst z = bevelThickness * Math.cos( t * Math.PI / 2 );\n\t\t\t\tconst bs = bevelSize * Math.sin( t * Math.PI / 2 ) + bevelOffset;\n\n\t\t\t\t// contract shape\n\n\t\t\t\tfor ( let i = 0, il = contour.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst vert = scalePt2( contour[ i ], contourMovements[ i ], bs );\n\t\t\t\t\tv( vert.x, vert.y, depth + z );\n\n\t\t\t\t}\n\n\t\t\t\t// expand holes\n\n\t\t\t\tfor ( let h = 0, hl = holes.length; h < hl; h ++ ) {\n\n\t\t\t\t\tconst ahole = holes[ h ];\n\t\t\t\t\toneHoleMovements = holesMovements[ h ];\n\n\t\t\t\t\tfor ( let i = 0, il = ahole.length; i < il; i ++ ) {\n\n\t\t\t\t\t\tconst vert = scalePt2( ahole[ i ], oneHoleMovements[ i ], bs );\n\n\t\t\t\t\t\tif ( ! extrudeByPath ) {\n\n\t\t\t\t\t\t\tv( vert.x, vert.y, depth + z );\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tv( vert.x, vert.y + extrudePts[ steps - 1 ].y, extrudePts[ steps - 1 ].x + z );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t/* Faces */\n\n\t\t\t// Top and bottom faces\n\n\t\t\tbuildLidFaces();\n\n\t\t\t// Sides faces\n\n\t\t\tbuildSideFaces();\n\n\n\t\t\t/////  Internal functions\n\n\t\t\tfunction buildLidFaces() {\n\n\t\t\t\tconst start = verticesArray.length / 3;\n\n\t\t\t\tif ( bevelEnabled ) {\n\n\t\t\t\t\tlet layer = 0; // steps + 1\n\t\t\t\t\tlet offset = vlen * layer;\n\n\t\t\t\t\t// Bottom faces\n\n\t\t\t\t\tfor ( let i = 0; i < flen; i ++ ) {\n\n\t\t\t\t\t\tconst face = faces[ i ];\n\t\t\t\t\t\tf3( face[ 2 ] + offset, face[ 1 ] + offset, face[ 0 ] + offset );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tlayer = steps + bevelSegments * 2;\n\t\t\t\t\toffset = vlen * layer;\n\n\t\t\t\t\t// Top faces\n\n\t\t\t\t\tfor ( let i = 0; i < flen; i ++ ) {\n\n\t\t\t\t\t\tconst face = faces[ i ];\n\t\t\t\t\t\tf3( face[ 0 ] + offset, face[ 1 ] + offset, face[ 2 ] + offset );\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// Bottom faces\n\n\t\t\t\t\tfor ( let i = 0; i < flen; i ++ ) {\n\n\t\t\t\t\t\tconst face = faces[ i ];\n\t\t\t\t\t\tf3( face[ 2 ], face[ 1 ], face[ 0 ] );\n\n\t\t\t\t\t}\n\n\t\t\t\t\t// Top faces\n\n\t\t\t\t\tfor ( let i = 0; i < flen; i ++ ) {\n\n\t\t\t\t\t\tconst face = faces[ i ];\n\t\t\t\t\t\tf3( face[ 0 ] + vlen * steps, face[ 1 ] + vlen * steps, face[ 2 ] + vlen * steps );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tscope.addGroup( start, verticesArray.length / 3 - start, 0 );\n\n\t\t\t}\n\n\t\t\t// Create faces for the z-sides of the shape\n\n\t\t\tfunction buildSideFaces() {\n\n\t\t\t\tconst start = verticesArray.length / 3;\n\t\t\t\tlet layeroffset = 0;\n\t\t\t\tsidewalls( contour, layeroffset );\n\t\t\t\tlayeroffset += contour.length;\n\n\t\t\t\tfor ( let h = 0, hl = holes.length; h < hl; h ++ ) {\n\n\t\t\t\t\tconst ahole = holes[ h ];\n\t\t\t\t\tsidewalls( ahole, layeroffset );\n\n\t\t\t\t\t//, true\n\t\t\t\t\tlayeroffset += ahole.length;\n\n\t\t\t\t}\n\n\n\t\t\t\tscope.addGroup( start, verticesArray.length / 3 - start, 1 );\n\n\n\t\t\t}\n\n\t\t\tfunction sidewalls( contour, layeroffset ) {\n\n\t\t\t\tlet i = contour.length;\n\n\t\t\t\twhile ( -- i >= 0 ) {\n\n\t\t\t\t\tconst j = i;\n\t\t\t\t\tlet k = i - 1;\n\t\t\t\t\tif ( k < 0 ) k = contour.length - 1;\n\n\t\t\t\t\t//console.log('b', i,j, i-1, k,vertices.length);\n\n\t\t\t\t\tfor ( let s = 0, sl = ( steps + bevelSegments * 2 ); s < sl; s ++ ) {\n\n\t\t\t\t\t\tconst slen1 = vlen * s;\n\t\t\t\t\t\tconst slen2 = vlen * ( s + 1 );\n\n\t\t\t\t\t\tconst a = layeroffset + j + slen1,\n\t\t\t\t\t\t\tb = layeroffset + k + slen1,\n\t\t\t\t\t\t\tc = layeroffset + k + slen2,\n\t\t\t\t\t\t\td = layeroffset + j + slen2;\n\n\t\t\t\t\t\tf4( a, b, c, d );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tfunction v( x, y, z ) {\n\n\t\t\t\tplaceholder.push( x );\n\t\t\t\tplaceholder.push( y );\n\t\t\t\tplaceholder.push( z );\n\n\t\t\t}\n\n\n\t\t\tfunction f3( a, b, c ) {\n\n\t\t\t\taddVertex( a );\n\t\t\t\taddVertex( b );\n\t\t\t\taddVertex( c );\n\n\t\t\t\tconst nextIndex = verticesArray.length / 3;\n\t\t\t\tconst uvs = uvgen.generateTopUV( scope, verticesArray, nextIndex - 3, nextIndex - 2, nextIndex - 1 );\n\n\t\t\t\taddUV( uvs[ 0 ] );\n\t\t\t\taddUV( uvs[ 1 ] );\n\t\t\t\taddUV( uvs[ 2 ] );\n\n\t\t\t}\n\n\t\t\tfunction f4( a, b, c, d ) {\n\n\t\t\t\taddVertex( a );\n\t\t\t\taddVertex( b );\n\t\t\t\taddVertex( d );\n\n\t\t\t\taddVertex( b );\n\t\t\t\taddVertex( c );\n\t\t\t\taddVertex( d );\n\n\n\t\t\t\tconst nextIndex = verticesArray.length / 3;\n\t\t\t\tconst uvs = uvgen.generateSideWallUV( scope, verticesArray, nextIndex - 6, nextIndex - 3, nextIndex - 2, nextIndex - 1 );\n\n\t\t\t\taddUV( uvs[ 0 ] );\n\t\t\t\taddUV( uvs[ 1 ] );\n\t\t\t\taddUV( uvs[ 3 ] );\n\n\t\t\t\taddUV( uvs[ 1 ] );\n\t\t\t\taddUV( uvs[ 2 ] );\n\t\t\t\taddUV( uvs[ 3 ] );\n\n\t\t\t}\n\n\t\t\tfunction addVertex( index ) {\n\n\t\t\t\tverticesArray.push( placeholder[ index * 3 + 0 ] );\n\t\t\t\tverticesArray.push( placeholder[ index * 3 + 1 ] );\n\t\t\t\tverticesArray.push( placeholder[ index * 3 + 2 ] );\n\n\t\t\t}\n\n\n\t\t\tfunction addUV( vector2 ) {\n\n\t\t\t\tuvArray.push( vector2.x );\n\t\t\t\tuvArray.push( vector2.y );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = BufferGeometry.prototype.toJSON.call( this );\n\n\t\tconst shapes = this.parameters.shapes;\n\t\tconst options = this.parameters.options;\n\n\t\treturn toJSON( shapes, options, data );\n\n\t}\n\n}\n\nconst WorldUVGenerator = {\n\n\tgenerateTopUV: function ( geometry, vertices, indexA, indexB, indexC ) {\n\n\t\tconst a_x = vertices[ indexA * 3 ];\n\t\tconst a_y = vertices[ indexA * 3 + 1 ];\n\t\tconst b_x = vertices[ indexB * 3 ];\n\t\tconst b_y = vertices[ indexB * 3 + 1 ];\n\t\tconst c_x = vertices[ indexC * 3 ];\n\t\tconst c_y = vertices[ indexC * 3 + 1 ];\n\n\t\treturn [\n\t\t\tnew Vector2( a_x, a_y ),\n\t\t\tnew Vector2( b_x, b_y ),\n\t\t\tnew Vector2( c_x, c_y )\n\t\t];\n\n\t},\n\n\tgenerateSideWallUV: function ( geometry, vertices, indexA, indexB, indexC, indexD ) {\n\n\t\tconst a_x = vertices[ indexA * 3 ];\n\t\tconst a_y = vertices[ indexA * 3 + 1 ];\n\t\tconst a_z = vertices[ indexA * 3 + 2 ];\n\t\tconst b_x = vertices[ indexB * 3 ];\n\t\tconst b_y = vertices[ indexB * 3 + 1 ];\n\t\tconst b_z = vertices[ indexB * 3 + 2 ];\n\t\tconst c_x = vertices[ indexC * 3 ];\n\t\tconst c_y = vertices[ indexC * 3 + 1 ];\n\t\tconst c_z = vertices[ indexC * 3 + 2 ];\n\t\tconst d_x = vertices[ indexD * 3 ];\n\t\tconst d_y = vertices[ indexD * 3 + 1 ];\n\t\tconst d_z = vertices[ indexD * 3 + 2 ];\n\n\t\tif ( Math.abs( a_y - b_y ) < 0.01 ) {\n\n\t\t\treturn [\n\t\t\t\tnew Vector2( a_x, 1 - a_z ),\n\t\t\t\tnew Vector2( b_x, 1 - b_z ),\n\t\t\t\tnew Vector2( c_x, 1 - c_z ),\n\t\t\t\tnew Vector2( d_x, 1 - d_z )\n\t\t\t];\n\n\t\t} else {\n\n\t\t\treturn [\n\t\t\t\tnew Vector2( a_y, 1 - a_z ),\n\t\t\t\tnew Vector2( b_y, 1 - b_z ),\n\t\t\t\tnew Vector2( c_y, 1 - c_z ),\n\t\t\t\tnew Vector2( d_y, 1 - d_z )\n\t\t\t];\n\n\t\t}\n\n\t}\n\n};\n\nfunction toJSON( shapes, options, data ) {\n\n\tdata.shapes = [];\n\n\tif ( Array.isArray( shapes ) ) {\n\n\t\tfor ( let i = 0, l = shapes.length; i < l; i ++ ) {\n\n\t\t\tconst shape = shapes[ i ];\n\n\t\t\tdata.shapes.push( shape.uuid );\n\n\t\t}\n\n\t} else {\n\n\t\tdata.shapes.push( shapes.uuid );\n\n\t}\n\n\tif ( options.extrudePath !== undefined ) data.options.extrudePath = options.extrudePath.toJSON();\n\n\treturn data;\n\n}\n\n/**\n * Creates extruded geometry from a path shape.\n *\n * parameters = {\n *\n *  curveSegments: <int>, // number of points on the curves\n *  steps: <int>, // number of points for z-side extrusions / used for subdividing segments of extrude spline too\n *  depth: <float>, // Depth to extrude the shape\n *\n *  bevelEnabled: <bool>, // turn on bevel\n *  bevelThickness: <float>, // how deep into the original shape bevel goes\n *  bevelSize: <float>, // how far from shape outline (including bevelOffset) is bevel\n *  bevelOffset: <float>, // how far from shape outline does bevel start\n *  bevelSegments: <int>, // number of bevel layers\n *\n *  extrudePath: <THREE.Curve> // curve to extrude shape along\n *\n *  UVGenerator: <Object> // object that provides UV generator functions\n *\n * }\n */\n\nclass ExtrudeGeometry extends Geometry {\n\n\tconstructor( shapes, options ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'ExtrudeGeometry';\n\n\t\tthis.parameters = {\n\t\t\tshapes: shapes,\n\t\t\toptions: options\n\t\t};\n\n\t\tthis.fromBufferGeometry( new ExtrudeBufferGeometry( shapes, options ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = super.toJSON();\n\n\t\tconst shapes = this.parameters.shapes;\n\t\tconst options = this.parameters.options;\n\n\t\treturn toJSON$1( shapes, options, data );\n\n\t}\n\n}\n\nfunction toJSON$1( shapes, options, data ) {\n\n\tdata.shapes = [];\n\n\tif ( Array.isArray( shapes ) ) {\n\n\t\tfor ( let i = 0, l = shapes.length; i < l; i ++ ) {\n\n\t\t\tconst shape = shapes[ i ];\n\n\t\t\tdata.shapes.push( shape.uuid );\n\n\t\t}\n\n\t} else {\n\n\t\tdata.shapes.push( shapes.uuid );\n\n\t}\n\n\tif ( options.extrudePath !== undefined ) data.options.extrudePath = options.extrudePath.toJSON();\n\n\treturn data;\n\n}\n\nclass IcosahedronBufferGeometry extends PolyhedronBufferGeometry {\n\n\tconstructor( radius = 1, detail = 0 ) {\n\n\t\tconst t = ( 1 + Math.sqrt( 5 ) ) / 2;\n\n\t\tconst vertices = [\n\t\t\t- 1, t, 0, \t1, t, 0, \t- 1, - t, 0, \t1, - t, 0,\n\t\t\t0, - 1, t, \t0, 1, t,\t0, - 1, - t, \t0, 1, - t,\n\t\t\tt, 0, - 1, \tt, 0, 1, \t- t, 0, - 1, \t- t, 0, 1\n\t\t];\n\n\t\tconst indices = [\n\t\t\t0, 11, 5, \t0, 5, 1, \t0, 1, 7, \t0, 7, 10, \t0, 10, 11,\n\t\t\t1, 5, 9, \t5, 11, 4,\t11, 10, 2,\t10, 7, 6,\t7, 1, 8,\n\t\t\t3, 9, 4, \t3, 4, 2,\t3, 2, 6,\t3, 6, 8,\t3, 8, 9,\n\t\t\t4, 9, 5, \t2, 4, 11,\t6, 2, 10,\t8, 6, 7,\t9, 8, 1\n\t\t];\n\n\t\tsuper( vertices, indices, radius, detail );\n\n\t\tthis.type = 'IcosahedronBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t}\n\n}\n\nclass IcosahedronGeometry extends Geometry {\n\n\tconstructor( radius, detail ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'IcosahedronGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t\tthis.fromBufferGeometry( new IcosahedronBufferGeometry( radius, detail ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass LatheBufferGeometry extends BufferGeometry {\n\n\tconstructor( points, segments = 12, phiStart = 0, phiLength = Math.PI * 2 ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'LatheBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tpoints: points,\n\t\t\tsegments: segments,\n\t\t\tphiStart: phiStart,\n\t\t\tphiLength: phiLength\n\t\t};\n\n\t\tsegments = Math.floor( segments );\n\n\t\t// clamp phiLength so it's in range of [ 0, 2PI ]\n\n\t\tphiLength = MathUtils.clamp( phiLength, 0, Math.PI * 2 );\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst uvs = [];\n\n\t\t// helper variables\n\n\t\tconst inverseSegments = 1.0 / segments;\n\t\tconst vertex = new Vector3();\n\t\tconst uv = new Vector2();\n\n\t\t// generate vertices and uvs\n\n\t\tfor ( let i = 0; i <= segments; i ++ ) {\n\n\t\t\tconst phi = phiStart + i * inverseSegments * phiLength;\n\n\t\t\tconst sin = Math.sin( phi );\n\t\t\tconst cos = Math.cos( phi );\n\n\t\t\tfor ( let j = 0; j <= ( points.length - 1 ); j ++ ) {\n\n\t\t\t\t// vertex\n\n\t\t\t\tvertex.x = points[ j ].x * sin;\n\t\t\t\tvertex.y = points[ j ].y;\n\t\t\t\tvertex.z = points[ j ].x * cos;\n\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t// uv\n\n\t\t\t\tuv.x = i / segments;\n\t\t\t\tuv.y = j / ( points.length - 1 );\n\n\t\t\t\tuvs.push( uv.x, uv.y );\n\n\n\t\t\t}\n\n\t\t}\n\n\t\t// indices\n\n\t\tfor ( let i = 0; i < segments; i ++ ) {\n\n\t\t\tfor ( let j = 0; j < ( points.length - 1 ); j ++ ) {\n\n\t\t\t\tconst base = j + i * points.length;\n\n\t\t\t\tconst a = base;\n\t\t\t\tconst b = base + points.length;\n\t\t\t\tconst c = base + points.length + 1;\n\t\t\t\tconst d = base + 1;\n\n\t\t\t\t// faces\n\n\t\t\t\tindices.push( a, b, d );\n\t\t\t\tindices.push( b, c, d );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t\t// generate normals\n\n\t\tthis.computeVertexNormals();\n\n\t\t// if the geometry is closed, we need to average the normals along the seam.\n\t\t// because the corresponding vertices are identical (but still have different UVs).\n\n\t\tif ( phiLength === Math.PI * 2 ) {\n\n\t\t\tconst normals = this.attributes.normal.array;\n\t\t\tconst n1 = new Vector3();\n\t\t\tconst n2 = new Vector3();\n\t\t\tconst n = new Vector3();\n\n\t\t\t// this is the buffer offset for the last line of vertices\n\n\t\t\tconst base = segments * points.length * 3;\n\n\t\t\tfor ( let i = 0, j = 0; i < points.length; i ++, j += 3 ) {\n\n\t\t\t\t// select the normal of the vertex in the first line\n\n\t\t\t\tn1.x = normals[ j + 0 ];\n\t\t\t\tn1.y = normals[ j + 1 ];\n\t\t\t\tn1.z = normals[ j + 2 ];\n\n\t\t\t\t// select the normal of the vertex in the last line\n\n\t\t\t\tn2.x = normals[ base + j + 0 ];\n\t\t\t\tn2.y = normals[ base + j + 1 ];\n\t\t\t\tn2.z = normals[ base + j + 2 ];\n\n\t\t\t\t// average normals\n\n\t\t\t\tn.addVectors( n1, n2 ).normalize();\n\n\t\t\t\t// assign the new values to both normals\n\n\t\t\t\tnormals[ j + 0 ] = normals[ base + j + 0 ] = n.x;\n\t\t\t\tnormals[ j + 1 ] = normals[ base + j + 1 ] = n.y;\n\t\t\t\tnormals[ j + 2 ] = normals[ base + j + 2 ] = n.z;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n}\n\nclass LatheGeometry extends Geometry {\n\n\tconstructor( points, segments, phiStart, phiLength ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'LatheGeometry';\n\n\t\tthis.parameters = {\n\t\t\tpoints: points,\n\t\t\tsegments: segments,\n\t\t\tphiStart: phiStart,\n\t\t\tphiLength: phiLength\n\t\t};\n\n\t\tthis.fromBufferGeometry( new LatheBufferGeometry( points, segments, phiStart, phiLength ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass OctahedronBufferGeometry extends PolyhedronBufferGeometry {\n\n\tconstructor( radius = 1, detail = 0 ) {\n\n\t\tconst vertices = [\n\t\t\t1, 0, 0, \t- 1, 0, 0,\t0, 1, 0,\n\t\t\t0, - 1, 0, \t0, 0, 1,\t0, 0, - 1\n\t\t];\n\n\t\tconst indices = [\n\t\t\t0, 2, 4,\t0, 4, 3,\t0, 3, 5,\n\t\t\t0, 5, 2,\t1, 2, 5,\t1, 5, 3,\n\t\t\t1, 3, 4,\t1, 4, 2\n\t\t];\n\n\t\tsuper( vertices, indices, radius, detail );\n\n\t\tthis.type = 'OctahedronBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t}\n\n}\n\nclass OctahedronGeometry extends Geometry {\n\n\tconstructor( radius, detail ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'OctahedronGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t\tthis.fromBufferGeometry( new OctahedronBufferGeometry( radius, detail ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\n/**\n * Parametric Surfaces Geometry\n * based on the brilliant article by @prideout https://prideout.net/blog/old/blog/index.html@p=44.html\n */\n\nfunction ParametricBufferGeometry( func, slices, stacks ) {\n\n\tBufferGeometry.call( this );\n\n\tthis.type = 'ParametricBufferGeometry';\n\n\tthis.parameters = {\n\t\tfunc: func,\n\t\tslices: slices,\n\t\tstacks: stacks\n\t};\n\n\t// buffers\n\n\tconst indices = [];\n\tconst vertices = [];\n\tconst normals = [];\n\tconst uvs = [];\n\n\tconst EPS = 0.00001;\n\n\tconst normal = new Vector3();\n\n\tconst p0 = new Vector3(), p1 = new Vector3();\n\tconst pu = new Vector3(), pv = new Vector3();\n\n\tif ( func.length < 3 ) {\n\n\t\tconsole.error( 'THREE.ParametricGeometry: Function must now modify a Vector3 as third parameter.' );\n\n\t}\n\n\t// generate vertices, normals and uvs\n\n\tconst sliceCount = slices + 1;\n\n\tfor ( let i = 0; i <= stacks; i ++ ) {\n\n\t\tconst v = i / stacks;\n\n\t\tfor ( let j = 0; j <= slices; j ++ ) {\n\n\t\t\tconst u = j / slices;\n\n\t\t\t// vertex\n\n\t\t\tfunc( u, v, p0 );\n\t\t\tvertices.push( p0.x, p0.y, p0.z );\n\n\t\t\t// normal\n\n\t\t\t// approximate tangent vectors via finite differences\n\n\t\t\tif ( u - EPS >= 0 ) {\n\n\t\t\t\tfunc( u - EPS, v, p1 );\n\t\t\t\tpu.subVectors( p0, p1 );\n\n\t\t\t} else {\n\n\t\t\t\tfunc( u + EPS, v, p1 );\n\t\t\t\tpu.subVectors( p1, p0 );\n\n\t\t\t}\n\n\t\t\tif ( v - EPS >= 0 ) {\n\n\t\t\t\tfunc( u, v - EPS, p1 );\n\t\t\t\tpv.subVectors( p0, p1 );\n\n\t\t\t} else {\n\n\t\t\t\tfunc( u, v + EPS, p1 );\n\t\t\t\tpv.subVectors( p1, p0 );\n\n\t\t\t}\n\n\t\t\t// cross product of tangent vectors returns surface normal\n\n\t\t\tnormal.crossVectors( pu, pv ).normalize();\n\t\t\tnormals.push( normal.x, normal.y, normal.z );\n\n\t\t\t// uv\n\n\t\t\tuvs.push( u, v );\n\n\t\t}\n\n\t}\n\n\t// generate indices\n\n\tfor ( let i = 0; i < stacks; i ++ ) {\n\n\t\tfor ( let j = 0; j < slices; j ++ ) {\n\n\t\t\tconst a = i * sliceCount + j;\n\t\t\tconst b = i * sliceCount + j + 1;\n\t\t\tconst c = ( i + 1 ) * sliceCount + j + 1;\n\t\t\tconst d = ( i + 1 ) * sliceCount + j;\n\n\t\t\t// faces one and two\n\n\t\t\tindices.push( a, b, d );\n\t\t\tindices.push( b, c, d );\n\n\t\t}\n\n\t}\n\n\t// build geometry\n\n\tthis.setIndex( indices );\n\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n}\n\nParametricBufferGeometry.prototype = Object.create( BufferGeometry.prototype );\nParametricBufferGeometry.prototype.constructor = ParametricBufferGeometry;\n\n/**\n * Parametric Surfaces Geometry\n * based on the brilliant article by @prideout https://prideout.net/blog/old/blog/index.html@p=44.html\n */\n\nfunction ParametricGeometry( func, slices, stacks ) {\n\n\tGeometry.call( this );\n\n\tthis.type = 'ParametricGeometry';\n\n\tthis.parameters = {\n\t\tfunc: func,\n\t\tslices: slices,\n\t\tstacks: stacks\n\t};\n\n\tthis.fromBufferGeometry( new ParametricBufferGeometry( func, slices, stacks ) );\n\tthis.mergeVertices();\n\n}\n\nParametricGeometry.prototype = Object.create( Geometry.prototype );\nParametricGeometry.prototype.constructor = ParametricGeometry;\n\nclass PlaneGeometry extends Geometry {\n\n\tconstructor( width, height, widthSegments, heightSegments ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'PlaneGeometry';\n\n\t\tthis.parameters = {\n\t\t\twidth: width,\n\t\t\theight: height,\n\t\t\twidthSegments: widthSegments,\n\t\t\theightSegments: heightSegments\n\t\t};\n\n\t\tthis.fromBufferGeometry( new PlaneBufferGeometry( width, height, widthSegments, heightSegments ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass PolyhedronGeometry extends Geometry {\n\n\tconstructor( vertices, indices, radius, detail ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'PolyhedronGeometry';\n\n\t\tthis.parameters = {\n\t\t\tvertices: vertices,\n\t\t\tindices: indices,\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t\tthis.fromBufferGeometry( new PolyhedronBufferGeometry( vertices, indices, radius, detail ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass RingBufferGeometry extends BufferGeometry {\n\n\tconstructor( innerRadius = 0.5, outerRadius = 1, thetaSegments = 8, phiSegments = 1, thetaStart = 0, thetaLength = Math.PI * 2 ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'RingBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tinnerRadius: innerRadius,\n\t\t\touterRadius: outerRadius,\n\t\t\tthetaSegments: thetaSegments,\n\t\t\tphiSegments: phiSegments,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t\tthetaSegments = Math.max( 3, thetaSegments );\n\t\tphiSegments = Math.max( 1, phiSegments );\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\t// some helper variables\n\n\t\tlet radius = innerRadius;\n\t\tconst radiusStep = ( ( outerRadius - innerRadius ) / phiSegments );\n\t\tconst vertex = new Vector3();\n\t\tconst uv = new Vector2();\n\n\t\t// generate vertices, normals and uvs\n\n\t\tfor ( let j = 0; j <= phiSegments; j ++ ) {\n\n\t\t\tfor ( let i = 0; i <= thetaSegments; i ++ ) {\n\n\t\t\t\t// values are generate from the inside of the ring to the outside\n\n\t\t\t\tconst segment = thetaStart + i / thetaSegments * thetaLength;\n\n\t\t\t\t// vertex\n\n\t\t\t\tvertex.x = radius * Math.cos( segment );\n\t\t\t\tvertex.y = radius * Math.sin( segment );\n\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t// normal\n\n\t\t\t\tnormals.push( 0, 0, 1 );\n\n\t\t\t\t// uv\n\n\t\t\t\tuv.x = ( vertex.x / outerRadius + 1 ) / 2;\n\t\t\t\tuv.y = ( vertex.y / outerRadius + 1 ) / 2;\n\n\t\t\t\tuvs.push( uv.x, uv.y );\n\n\t\t\t}\n\n\t\t\t// increase the radius for next row of vertices\n\n\t\t\tradius += radiusStep;\n\n\t\t}\n\n\t\t// indices\n\n\t\tfor ( let j = 0; j < phiSegments; j ++ ) {\n\n\t\t\tconst thetaSegmentLevel = j * ( thetaSegments + 1 );\n\n\t\t\tfor ( let i = 0; i < thetaSegments; i ++ ) {\n\n\t\t\t\tconst segment = i + thetaSegmentLevel;\n\n\t\t\t\tconst a = segment;\n\t\t\t\tconst b = segment + thetaSegments + 1;\n\t\t\t\tconst c = segment + thetaSegments + 2;\n\t\t\t\tconst d = segment + 1;\n\n\t\t\t\t// faces\n\n\t\t\t\tindices.push( a, b, d );\n\t\t\t\tindices.push( b, c, d );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t}\n\n}\n\nclass RingGeometry extends Geometry {\n\n\tconstructor( innerRadius, outerRadius, thetaSegments, phiSegments, thetaStart, thetaLength ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'RingGeometry';\n\n\t\tthis.parameters = {\n\t\t\tinnerRadius: innerRadius,\n\t\t\touterRadius: outerRadius,\n\t\t\tthetaSegments: thetaSegments,\n\t\t\tphiSegments: phiSegments,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t\tthis.fromBufferGeometry( new RingBufferGeometry( innerRadius, outerRadius, thetaSegments, phiSegments, thetaStart, thetaLength ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass ShapeBufferGeometry extends BufferGeometry {\n\n\tconstructor( shapes, curveSegments = 12 ) {\n\n\t\tsuper();\n\t\tthis.type = 'ShapeBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tshapes: shapes,\n\t\t\tcurveSegments: curveSegments\n\t\t};\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\t// helper variables\n\n\t\tlet groupStart = 0;\n\t\tlet groupCount = 0;\n\n\t\t// allow single and array values for \"shapes\" parameter\n\n\t\tif ( Array.isArray( shapes ) === false ) {\n\n\t\t\taddShape( shapes );\n\n\t\t} else {\n\n\t\t\tfor ( let i = 0; i < shapes.length; i ++ ) {\n\n\t\t\t\taddShape( shapes[ i ] );\n\n\t\t\t\tthis.addGroup( groupStart, groupCount, i ); // enables MultiMaterial support\n\n\t\t\t\tgroupStart += groupCount;\n\t\t\t\tgroupCount = 0;\n\n\t\t\t}\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\n\t\t// helper functions\n\n\t\tfunction addShape( shape ) {\n\n\t\t\tconst indexOffset = vertices.length / 3;\n\t\t\tconst points = shape.extractPoints( curveSegments );\n\n\t\t\tlet shapeVertices = points.shape;\n\t\t\tconst shapeHoles = points.holes;\n\n\t\t\t// check direction of vertices\n\n\t\t\tif ( ShapeUtils.isClockWise( shapeVertices ) === false ) {\n\n\t\t\t\tshapeVertices = shapeVertices.reverse();\n\n\t\t\t}\n\n\t\t\tfor ( let i = 0, l = shapeHoles.length; i < l; i ++ ) {\n\n\t\t\t\tconst shapeHole = shapeHoles[ i ];\n\n\t\t\t\tif ( ShapeUtils.isClockWise( shapeHole ) === true ) {\n\n\t\t\t\t\tshapeHoles[ i ] = shapeHole.reverse();\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tconst faces = ShapeUtils.triangulateShape( shapeVertices, shapeHoles );\n\n\t\t\t// join vertices of inner and outer paths to a single array\n\n\t\t\tfor ( let i = 0, l = shapeHoles.length; i < l; i ++ ) {\n\n\t\t\t\tconst shapeHole = shapeHoles[ i ];\n\t\t\t\tshapeVertices = shapeVertices.concat( shapeHole );\n\n\t\t\t}\n\n\t\t\t// vertices, normals, uvs\n\n\t\t\tfor ( let i = 0, l = shapeVertices.length; i < l; i ++ ) {\n\n\t\t\t\tconst vertex = shapeVertices[ i ];\n\n\t\t\t\tvertices.push( vertex.x, vertex.y, 0 );\n\t\t\t\tnormals.push( 0, 0, 1 );\n\t\t\t\tuvs.push( vertex.x, vertex.y ); // world uvs\n\n\t\t\t}\n\n\t\t\t// incides\n\n\t\t\tfor ( let i = 0, l = faces.length; i < l; i ++ ) {\n\n\t\t\t\tconst face = faces[ i ];\n\n\t\t\t\tconst a = face[ 0 ] + indexOffset;\n\t\t\t\tconst b = face[ 1 ] + indexOffset;\n\t\t\t\tconst c = face[ 2 ] + indexOffset;\n\n\t\t\t\tindices.push( a, b, c );\n\t\t\t\tgroupCount += 3;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = BufferGeometry.prototype.toJSON.call( this );\n\n\t\tconst shapes = this.parameters.shapes;\n\n\t\treturn toJSON$2( shapes, data );\n\n\t}\n\n}\n\nfunction toJSON$2( shapes, data ) {\n\n\tdata.shapes = [];\n\n\tif ( Array.isArray( shapes ) ) {\n\n\t\tfor ( let i = 0, l = shapes.length; i < l; i ++ ) {\n\n\t\t\tconst shape = shapes[ i ];\n\n\t\t\tdata.shapes.push( shape.uuid );\n\n\t\t}\n\n\t} else {\n\n\t\tdata.shapes.push( shapes.uuid );\n\n\t}\n\n\treturn data;\n\n}\n\nclass ShapeGeometry extends Geometry {\n\n\tconstructor( shapes, curveSegments ) {\n\n\t\tsuper();\n\t\tthis.type = 'ShapeGeometry';\n\n\t\tif ( typeof curveSegments === 'object' ) {\n\n\t\t\tconsole.warn( 'THREE.ShapeGeometry: Options parameter has been removed.' );\n\n\t\t\tcurveSegments = curveSegments.curveSegments;\n\n\t\t}\n\n\t\tthis.parameters = {\n\t\t\tshapes: shapes,\n\t\t\tcurveSegments: curveSegments\n\t\t};\n\n\t\tthis.fromBufferGeometry( new ShapeBufferGeometry( shapes, curveSegments ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = Geometry.prototype.toJSON.call( this );\n\n\t\tconst shapes = this.parameters.shapes;\n\n\t\treturn toJSON$3( shapes, data );\n\n\t}\n\n}\n\nfunction toJSON$3( shapes, data ) {\n\n\tdata.shapes = [];\n\n\tif ( Array.isArray( shapes ) ) {\n\n\t\tfor ( let i = 0, l = shapes.length; i < l; i ++ ) {\n\n\t\t\tconst shape = shapes[ i ];\n\n\t\t\tdata.shapes.push( shape.uuid );\n\n\t\t}\n\n\t} else {\n\n\t\tdata.shapes.push( shapes.uuid );\n\n\t}\n\n\treturn data;\n\n}\n\nclass SphereBufferGeometry extends BufferGeometry {\n\n\tconstructor( radius = 1, widthSegments = 8, heightSegments = 6, phiStart = 0, phiLength = Math.PI * 2, thetaStart = 0, thetaLength = Math.PI ) {\n\n\t\tsuper();\n\t\tthis.type = 'SphereBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\twidthSegments: widthSegments,\n\t\t\theightSegments: heightSegments,\n\t\t\tphiStart: phiStart,\n\t\t\tphiLength: phiLength,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t\twidthSegments = Math.max( 3, Math.floor( widthSegments ) );\n\t\theightSegments = Math.max( 2, Math.floor( heightSegments ) );\n\n\t\tconst thetaEnd = Math.min( thetaStart + thetaLength, Math.PI );\n\n\t\tlet index = 0;\n\t\tconst grid = [];\n\n\t\tconst vertex = new Vector3();\n\t\tconst normal = new Vector3();\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\t// generate vertices, normals and uvs\n\n\t\tfor ( let iy = 0; iy <= heightSegments; iy ++ ) {\n\n\t\t\tconst verticesRow = [];\n\n\t\t\tconst v = iy / heightSegments;\n\n\t\t\t// special case for the poles\n\n\t\t\tlet uOffset = 0;\n\n\t\t\tif ( iy == 0 && thetaStart == 0 ) {\n\n\t\t\t\tuOffset = 0.5 / widthSegments;\n\n\t\t\t} else if ( iy == heightSegments && thetaEnd == Math.PI ) {\n\n\t\t\t\tuOffset = - 0.5 / widthSegments;\n\n\t\t\t}\n\n\t\t\tfor ( let ix = 0; ix <= widthSegments; ix ++ ) {\n\n\t\t\t\tconst u = ix / widthSegments;\n\n\t\t\t\t// vertex\n\n\t\t\t\tvertex.x = - radius * Math.cos( phiStart + u * phiLength ) * Math.sin( thetaStart + v * thetaLength );\n\t\t\t\tvertex.y = radius * Math.cos( thetaStart + v * thetaLength );\n\t\t\t\tvertex.z = radius * Math.sin( phiStart + u * phiLength ) * Math.sin( thetaStart + v * thetaLength );\n\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t// normal\n\n\t\t\t\tnormal.copy( vertex ).normalize();\n\t\t\t\tnormals.push( normal.x, normal.y, normal.z );\n\n\t\t\t\t// uv\n\n\t\t\t\tuvs.push( u + uOffset, 1 - v );\n\n\t\t\t\tverticesRow.push( index ++ );\n\n\t\t\t}\n\n\t\t\tgrid.push( verticesRow );\n\n\t\t}\n\n\t\t// indices\n\n\t\tfor ( let iy = 0; iy < heightSegments; iy ++ ) {\n\n\t\t\tfor ( let ix = 0; ix < widthSegments; ix ++ ) {\n\n\t\t\t\tconst a = grid[ iy ][ ix + 1 ];\n\t\t\t\tconst b = grid[ iy ][ ix ];\n\t\t\t\tconst c = grid[ iy + 1 ][ ix ];\n\t\t\t\tconst d = grid[ iy + 1 ][ ix + 1 ];\n\n\t\t\t\tif ( iy !== 0 || thetaStart > 0 ) indices.push( a, b, d );\n\t\t\t\tif ( iy !== heightSegments - 1 || thetaEnd < Math.PI ) indices.push( b, c, d );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t}\n\n}\n\nclass SphereGeometry extends Geometry {\n\n\tconstructor( radius, widthSegments, heightSegments, phiStart, phiLength, thetaStart, thetaLength ) {\n\n\t\tsuper();\n\t\tthis.type = 'SphereGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\twidthSegments: widthSegments,\n\t\t\theightSegments: heightSegments,\n\t\t\tphiStart: phiStart,\n\t\t\tphiLength: phiLength,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t\tthis.fromBufferGeometry( new SphereBufferGeometry( radius, widthSegments, heightSegments, phiStart, phiLength, thetaStart, thetaLength ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass TetrahedronBufferGeometry extends PolyhedronBufferGeometry {\n\n\tconstructor( radius = 1, detail = 0 ) {\n\n\t\tconst vertices = [\n\t\t\t1, 1, 1, \t- 1, - 1, 1, \t- 1, 1, - 1, \t1, - 1, - 1\n\t\t];\n\n\t\tconst indices = [\n\t\t\t2, 1, 0, \t0, 3, 2,\t1, 3, 0,\t2, 3, 1\n\t\t];\n\n\t\tsuper( vertices, indices, radius, detail );\n\n\t\tthis.type = 'TetrahedronBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t}\n\n}\n\nclass TetrahedronGeometry extends Geometry {\n\n\tconstructor( radius, detail ) {\n\n\t\tsuper();\n\t\tthis.type = 'TetrahedronGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t\tthis.fromBufferGeometry( new TetrahedronBufferGeometry( radius, detail ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\n/**\n * Text = 3D Text\n *\n * parameters = {\n *  font: <THREE.Font>, // font\n *\n *  size: <float>, // size of the text\n *  height: <float>, // thickness to extrude text\n *  curveSegments: <int>, // number of points on the curves\n *\n *  bevelEnabled: <bool>, // turn on bevel\n *  bevelThickness: <float>, // how deep into text bevel goes\n *  bevelSize: <float>, // how far from text outline (including bevelOffset) is bevel\n *  bevelOffset: <float> // how far from text outline does bevel start\n * }\n */\n\nclass TextBufferGeometry extends ExtrudeBufferGeometry {\n\n\tconstructor( text, parameters = {} ) {\n\n\t\tconst font = parameters.font;\n\n\t\tif ( ! ( font && font.isFont ) ) {\n\n\t\t\tconsole.error( 'THREE.TextGeometry: font parameter is not an instance of THREE.Font.' );\n\t\t\treturn new BufferGeometry();\n\n\t\t}\n\n\t\tconst shapes = font.generateShapes( text, parameters.size );\n\n\t\t// translate parameters to ExtrudeGeometry API\n\n\t\tparameters.depth = parameters.height !== undefined ? parameters.height : 50;\n\n\t\t// defaults\n\n\t\tif ( parameters.bevelThickness === undefined ) parameters.bevelThickness = 10;\n\t\tif ( parameters.bevelSize === undefined ) parameters.bevelSize = 8;\n\t\tif ( parameters.bevelEnabled === undefined ) parameters.bevelEnabled = false;\n\n\t\tsuper( shapes, parameters );\n\n\t\tthis.type = 'TextBufferGeometry';\n\n\t}\n\n}\n\n/**\n * Text = 3D Text\n *\n * parameters = {\n *  font: <THREE.Font>, // font\n *\n *  size: <float>, // size of the text\n *  height: <float>, // thickness to extrude text\n *  curveSegments: <int>, // number of points on the curves\n *\n *  bevelEnabled: <bool>, // turn on bevel\n *  bevelThickness: <float>, // how deep into text bevel goes\n *  bevelSize: <float>, // how far from text outline (including bevelOffset) is bevel\n *  bevelOffset: <float> // how far from text outline does bevel start\n * }\n */\n\nclass TextGeometry extends Geometry {\n\n\tconstructor( text, parameters ) {\n\n\t\tsuper();\n\t\tthis.type = 'TextGeometry';\n\n\t\tthis.parameters = {\n\t\t\ttext: text,\n\t\t\tparameters: parameters\n\t\t};\n\n\t\tthis.fromBufferGeometry( new TextBufferGeometry( text, parameters ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass TorusBufferGeometry extends BufferGeometry {\n\n\tconstructor( radius = 1, tube = 0.4, radialSegments = 8, tubularSegments = 6, arc = Math.PI * 2 ) {\n\n\t\tsuper();\n\t\tthis.type = 'TorusBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\ttube: tube,\n\t\t\tradialSegments: radialSegments,\n\t\t\ttubularSegments: tubularSegments,\n\t\t\tarc: arc\n\t\t};\n\n\t\tradialSegments = Math.floor( radialSegments );\n\t\ttubularSegments = Math.floor( tubularSegments );\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\t// helper variables\n\n\t\tconst center = new Vector3();\n\t\tconst vertex = new Vector3();\n\t\tconst normal = new Vector3();\n\n\t\t// generate vertices, normals and uvs\n\n\t\tfor ( let j = 0; j <= radialSegments; j ++ ) {\n\n\t\t\tfor ( let i = 0; i <= tubularSegments; i ++ ) {\n\n\t\t\t\tconst u = i / tubularSegments * arc;\n\t\t\t\tconst v = j / radialSegments * Math.PI * 2;\n\n\t\t\t\t// vertex\n\n\t\t\t\tvertex.x = ( radius + tube * Math.cos( v ) ) * Math.cos( u );\n\t\t\t\tvertex.y = ( radius + tube * Math.cos( v ) ) * Math.sin( u );\n\t\t\t\tvertex.z = tube * Math.sin( v );\n\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t// normal\n\n\t\t\t\tcenter.x = radius * Math.cos( u );\n\t\t\t\tcenter.y = radius * Math.sin( u );\n\t\t\t\tnormal.subVectors( vertex, center ).normalize();\n\n\t\t\t\tnormals.push( normal.x, normal.y, normal.z );\n\n\t\t\t\t// uv\n\n\t\t\t\tuvs.push( i / tubularSegments );\n\t\t\t\tuvs.push( j / radialSegments );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// generate indices\n\n\t\tfor ( let j = 1; j <= radialSegments; j ++ ) {\n\n\t\t\tfor ( let i = 1; i <= tubularSegments; i ++ ) {\n\n\t\t\t\t// indices\n\n\t\t\t\tconst a = ( tubularSegments + 1 ) * j + i - 1;\n\t\t\t\tconst b = ( tubularSegments + 1 ) * ( j - 1 ) + i - 1;\n\t\t\t\tconst c = ( tubularSegments + 1 ) * ( j - 1 ) + i;\n\t\t\t\tconst d = ( tubularSegments + 1 ) * j + i;\n\n\t\t\t\t// faces\n\n\t\t\t\tindices.push( a, b, d );\n\t\t\t\tindices.push( b, c, d );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t}\n\n}\n\nclass TorusGeometry extends Geometry {\n\n\tconstructor( radius, tube, radialSegments, tubularSegments, arc ) {\n\n\t\tsuper();\n\t\tthis.type = 'TorusGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\ttube: tube,\n\t\t\tradialSegments: radialSegments,\n\t\t\ttubularSegments: tubularSegments,\n\t\t\tarc: arc\n\t\t};\n\n\t\tthis.fromBufferGeometry( new TorusBufferGeometry( radius, tube, radialSegments, tubularSegments, arc ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass TorusKnotBufferGeometry extends BufferGeometry {\n\n\tconstructor( radius = 1, tube = 0.4, tubularSegments = 64, radialSegments = 8, p = 2, q = 3 ) {\n\n\t\tsuper();\n\t\tthis.type = 'TorusKnotBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\ttube: tube,\n\t\t\ttubularSegments: tubularSegments,\n\t\t\tradialSegments: radialSegments,\n\t\t\tp: p,\n\t\t\tq: q\n\t\t};\n\n\t\ttubularSegments = Math.floor( tubularSegments );\n\t\tradialSegments = Math.floor( radialSegments );\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\t// helper variables\n\n\t\tconst vertex = new Vector3();\n\t\tconst normal = new Vector3();\n\n\t\tconst P1 = new Vector3();\n\t\tconst P2 = new Vector3();\n\n\t\tconst B = new Vector3();\n\t\tconst T = new Vector3();\n\t\tconst N = new Vector3();\n\n\t\t// generate vertices, normals and uvs\n\n\t\tfor ( let i = 0; i <= tubularSegments; ++ i ) {\n\n\t\t\t// the radian \"u\" is used to calculate the position on the torus curve of the current tubular segement\n\n\t\t\tconst u = i / tubularSegments * p * Math.PI * 2;\n\n\t\t\t// now we calculate two points. P1 is our current position on the curve, P2 is a little farther ahead.\n\t\t\t// these points are used to create a special \"coordinate space\", which is necessary to calculate the correct vertex positions\n\n\t\t\tcalculatePositionOnCurve( u, p, q, radius, P1 );\n\t\t\tcalculatePositionOnCurve( u + 0.01, p, q, radius, P2 );\n\n\t\t\t// calculate orthonormal basis\n\n\t\t\tT.subVectors( P2, P1 );\n\t\t\tN.addVectors( P2, P1 );\n\t\t\tB.crossVectors( T, N );\n\t\t\tN.crossVectors( B, T );\n\n\t\t\t// normalize B, N. T can be ignored, we don't use it\n\n\t\t\tB.normalize();\n\t\t\tN.normalize();\n\n\t\t\tfor ( let j = 0; j <= radialSegments; ++ j ) {\n\n\t\t\t\t// now calculate the vertices. they are nothing more than an extrusion of the torus curve.\n\t\t\t\t// because we extrude a shape in the xy-plane, there is no need to calculate a z-value.\n\n\t\t\t\tconst v = j / radialSegments * Math.PI * 2;\n\t\t\t\tconst cx = - tube * Math.cos( v );\n\t\t\t\tconst cy = tube * Math.sin( v );\n\n\t\t\t\t// now calculate the final vertex position.\n\t\t\t\t// first we orient the extrusion with our basis vectos, then we add it to the current position on the curve\n\n\t\t\t\tvertex.x = P1.x + ( cx * N.x + cy * B.x );\n\t\t\t\tvertex.y = P1.y + ( cx * N.y + cy * B.y );\n\t\t\t\tvertex.z = P1.z + ( cx * N.z + cy * B.z );\n\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t// normal (P1 is always the center/origin of the extrusion, thus we can use it to calculate the normal)\n\n\t\t\t\tnormal.subVectors( vertex, P1 ).normalize();\n\n\t\t\t\tnormals.push( normal.x, normal.y, normal.z );\n\n\t\t\t\t// uv\n\n\t\t\t\tuvs.push( i / tubularSegments );\n\t\t\t\tuvs.push( j / radialSegments );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// generate indices\n\n\t\tfor ( let j = 1; j <= tubularSegments; j ++ ) {\n\n\t\t\tfor ( let i = 1; i <= radialSegments; i ++ ) {\n\n\t\t\t\t// indices\n\n\t\t\t\tconst a = ( radialSegments + 1 ) * ( j - 1 ) + ( i - 1 );\n\t\t\t\tconst b = ( radialSegments + 1 ) * j + ( i - 1 );\n\t\t\t\tconst c = ( radialSegments + 1 ) * j + i;\n\t\t\t\tconst d = ( radialSegments + 1 ) * ( j - 1 ) + i;\n\n\t\t\t\t// faces\n\n\t\t\t\tindices.push( a, b, d );\n\t\t\t\tindices.push( b, c, d );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t\t// this function calculates the current position on the torus curve\n\n\t\tfunction calculatePositionOnCurve( u, p, q, radius, position ) {\n\n\t\t\tconst cu = Math.cos( u );\n\t\t\tconst su = Math.sin( u );\n\t\t\tconst quOverP = q / p * u;\n\t\t\tconst cs = Math.cos( quOverP );\n\n\t\t\tposition.x = radius * ( 2 + cs ) * 0.5 * cu;\n\t\t\tposition.y = radius * ( 2 + cs ) * su * 0.5;\n\t\t\tposition.z = radius * Math.sin( quOverP ) * 0.5;\n\n\t\t}\n\n\t}\n\n}\n\nclass TorusKnotGeometry extends Geometry {\n\n\tconstructor( radius, tube, tubularSegments, radialSegments, p, q, heightScale ) {\n\n\t\tsuper();\n\t\tthis.type = 'TorusKnotGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\ttube: tube,\n\t\t\ttubularSegments: tubularSegments,\n\t\t\tradialSegments: radialSegments,\n\t\t\tp: p,\n\t\t\tq: q\n\t\t};\n\n\t\tif ( heightScale !== undefined ) console.warn( 'THREE.TorusKnotGeometry: heightScale has been deprecated. Use .scale( x, y, z ) instead.' );\n\n\t\tthis.fromBufferGeometry( new TorusKnotBufferGeometry( radius, tube, tubularSegments, radialSegments, p, q ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass TubeBufferGeometry extends BufferGeometry {\n\n\tconstructor( path, tubularSegments = 64, radius = 1, radialSegments = 8, closed = false ) {\n\n\t\tsuper();\n\t\tthis.type = 'TubeBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tpath: path,\n\t\t\ttubularSegments: tubularSegments,\n\t\t\tradius: radius,\n\t\t\tradialSegments: radialSegments,\n\t\t\tclosed: closed\n\t\t};\n\n\t\tconst frames = path.computeFrenetFrames( tubularSegments, closed );\n\n\t\t// expose internals\n\n\t\tthis.tangents = frames.tangents;\n\t\tthis.normals = frames.normals;\n\t\tthis.binormals = frames.binormals;\n\n\t\t// helper variables\n\n\t\tconst vertex = new Vector3();\n\t\tconst normal = new Vector3();\n\t\tconst uv = new Vector2();\n\t\tlet P = new Vector3();\n\n\t\t// buffer\n\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\t\tconst indices = [];\n\n\t\t// create buffer data\n\n\t\tgenerateBufferData();\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t\t// functions\n\n\t\tfunction generateBufferData() {\n\n\t\t\tfor ( let i = 0; i < tubularSegments; i ++ ) {\n\n\t\t\t\tgenerateSegment( i );\n\n\t\t\t}\n\n\t\t\t// if the geometry is not closed, generate the last row of vertices and normals\n\t\t\t// at the regular position on the given path\n\t\t\t//\n\t\t\t// if the geometry is closed, duplicate the first row of vertices and normals (uvs will differ)\n\n\t\t\tgenerateSegment( ( closed === false ) ? tubularSegments : 0 );\n\n\t\t\t// uvs are generated in a separate function.\n\t\t\t// this makes it easy compute correct values for closed geometries\n\n\t\t\tgenerateUVs();\n\n\t\t\t// finally create faces\n\n\t\t\tgenerateIndices();\n\n\t\t}\n\n\t\tfunction generateSegment( i ) {\n\n\t\t\t// we use getPointAt to sample evenly distributed points from the given path\n\n\t\t\tP = path.getPointAt( i / tubularSegments, P );\n\n\t\t\t// retrieve corresponding normal and binormal\n\n\t\t\tconst N = frames.normals[ i ];\n\t\t\tconst B = frames.binormals[ i ];\n\n\t\t\t// generate normals and vertices for the current segment\n\n\t\t\tfor ( let j = 0; j <= radialSegments; j ++ ) {\n\n\t\t\t\tconst v = j / radialSegments * Math.PI * 2;\n\n\t\t\t\tconst sin = Math.sin( v );\n\t\t\t\tconst cos = - Math.cos( v );\n\n\t\t\t\t// normal\n\n\t\t\t\tnormal.x = ( cos * N.x + sin * B.x );\n\t\t\t\tnormal.y = ( cos * N.y + sin * B.y );\n\t\t\t\tnormal.z = ( cos * N.z + sin * B.z );\n\t\t\t\tnormal.normalize();\n\n\t\t\t\tnormals.push( normal.x, normal.y, normal.z );\n\n\t\t\t\t// vertex\n\n\t\t\t\tvertex.x = P.x + radius * normal.x;\n\t\t\t\tvertex.y = P.y + radius * normal.y;\n\t\t\t\tvertex.z = P.z + radius * normal.z;\n\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction generateIndices() {\n\n\t\t\tfor ( let j = 1; j <= tubularSegments; j ++ ) {\n\n\t\t\t\tfor ( let i = 1; i <= radialSegments; i ++ ) {\n\n\t\t\t\t\tconst a = ( radialSegments + 1 ) * ( j - 1 ) + ( i - 1 );\n\t\t\t\t\tconst b = ( radialSegments + 1 ) * j + ( i - 1 );\n\t\t\t\t\tconst c = ( radialSegments + 1 ) * j + i;\n\t\t\t\t\tconst d = ( radialSegments + 1 ) * ( j - 1 ) + i;\n\n\t\t\t\t\t// faces\n\n\t\t\t\t\tindices.push( a, b, d );\n\t\t\t\t\tindices.push( b, c, d );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction generateUVs() {\n\n\t\t\tfor ( let i = 0; i <= tubularSegments; i ++ ) {\n\n\t\t\t\tfor ( let j = 0; j <= radialSegments; j ++ ) {\n\n\t\t\t\t\tuv.x = i / tubularSegments;\n\t\t\t\t\tuv.y = j / radialSegments;\n\n\t\t\t\t\tuvs.push( uv.x, uv.y );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\ttoJSON() {\n\n\t\tconst data = BufferGeometry.prototype.toJSON.call( this );\n\n\t\tdata.path = this.parameters.path.toJSON();\n\n\t\treturn data;\n\n\t}\n\n}\n\nclass TubeGeometry extends Geometry {\n\n\tconstructor( path, tubularSegments, radius, radialSegments, closed, taper ) {\n\n\t\tsuper();\n\t\tthis.type = 'TubeGeometry';\n\n\t\tthis.parameters = {\n\t\t\tpath: path,\n\t\t\ttubularSegments: tubularSegments,\n\t\t\tradius: radius,\n\t\t\tradialSegments: radialSegments,\n\t\t\tclosed: closed\n\t\t};\n\n\t\tif ( taper !== undefined ) console.warn( 'THREE.TubeGeometry: taper has been removed.' );\n\n\t\tconst bufferGeometry = new TubeBufferGeometry( path, tubularSegments, radius, radialSegments, closed );\n\n\t\t// expose internals\n\n\t\tthis.tangents = bufferGeometry.tangents;\n\t\tthis.normals = bufferGeometry.normals;\n\t\tthis.binormals = bufferGeometry.binormals;\n\n\t\t// create geometry\n\n\t\tthis.fromBufferGeometry( bufferGeometry );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass WireframeGeometry extends BufferGeometry {\n\n\tconstructor( geometry ) {\n\n\t\tsuper();\n\t\tthis.type = 'WireframeGeometry';\n\n\t\t// buffer\n\n\t\tconst vertices = [];\n\n\t\t// helper variables\n\n\t\tconst edge = [ 0, 0 ], edges = {};\n\t\tconst keys = [ 'a', 'b', 'c' ];\n\n\t\t// different logic for Geometry and BufferGeometry\n\n\t\tif ( geometry && geometry.isGeometry ) {\n\n\t\t\t// create a data structure that contains all edges without duplicates\n\n\t\t\tconst faces = geometry.faces;\n\n\t\t\tfor ( let i = 0, l = faces.length; i < l; i ++ ) {\n\n\t\t\t\tconst face = faces[ i ];\n\n\t\t\t\tfor ( let j = 0; j < 3; j ++ ) {\n\n\t\t\t\t\tconst edge1 = face[ keys[ j ] ];\n\t\t\t\t\tconst edge2 = face[ keys[ ( j + 1 ) % 3 ] ];\n\t\t\t\t\tedge[ 0 ] = Math.min( edge1, edge2 ); // sorting prevents duplicates\n\t\t\t\t\tedge[ 1 ] = Math.max( edge1, edge2 );\n\n\t\t\t\t\tconst key = edge[ 0 ] + ',' + edge[ 1 ];\n\n\t\t\t\t\tif ( edges[ key ] === undefined ) {\n\n\t\t\t\t\t\tedges[ key ] = { index1: edge[ 0 ], index2: edge[ 1 ] };\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// generate vertices\n\n\t\t\tfor ( const key in edges ) {\n\n\t\t\t\tconst e = edges[ key ];\n\n\t\t\t\tlet vertex = geometry.vertices[ e.index1 ];\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\tvertex = geometry.vertices[ e.index2 ];\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t}\n\n\t\t} else if ( geometry && geometry.isBufferGeometry ) {\n\n\t\t\tconst vertex = new Vector3();\n\n\t\t\tif ( geometry.index !== null ) {\n\n\t\t\t\t// indexed BufferGeometry\n\n\t\t\t\tconst position = geometry.attributes.position;\n\t\t\t\tconst indices = geometry.index;\n\t\t\t\tlet groups = geometry.groups;\n\n\t\t\t\tif ( groups.length === 0 ) {\n\n\t\t\t\t\tgroups = [ { start: 0, count: indices.count, materialIndex: 0 } ];\n\n\t\t\t\t}\n\n\t\t\t\t// create a data structure that contains all eges without duplicates\n\n\t\t\t\tfor ( let o = 0, ol = groups.length; o < ol; ++ o ) {\n\n\t\t\t\t\tconst group = groups[ o ];\n\n\t\t\t\t\tconst start = group.start;\n\t\t\t\t\tconst count = group.count;\n\n\t\t\t\t\tfor ( let i = start, l = ( start + count ); i < l; i += 3 ) {\n\n\t\t\t\t\t\tfor ( let j = 0; j < 3; j ++ ) {\n\n\t\t\t\t\t\t\tconst edge1 = indices.getX( i + j );\n\t\t\t\t\t\t\tconst edge2 = indices.getX( i + ( j + 1 ) % 3 );\n\t\t\t\t\t\t\tedge[ 0 ] = Math.min( edge1, edge2 ); // sorting prevents duplicates\n\t\t\t\t\t\t\tedge[ 1 ] = Math.max( edge1, edge2 );\n\n\t\t\t\t\t\t\tconst key = edge[ 0 ] + ',' + edge[ 1 ];\n\n\t\t\t\t\t\t\tif ( edges[ key ] === undefined ) {\n\n\t\t\t\t\t\t\t\tedges[ key ] = { index1: edge[ 0 ], index2: edge[ 1 ] };\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\t// generate vertices\n\n\t\t\t\tfor ( const key in edges ) {\n\n\t\t\t\t\tconst e = edges[ key ];\n\n\t\t\t\t\tvertex.fromBufferAttribute( position, e.index1 );\n\t\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t\tvertex.fromBufferAttribute( position, e.index2 );\n\t\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\t// non-indexed BufferGeometry\n\n\t\t\t\tconst position = geometry.attributes.position;\n\n\t\t\t\tfor ( let i = 0, l = ( position.count / 3 ); i < l; i ++ ) {\n\n\t\t\t\t\tfor ( let j = 0; j < 3; j ++ ) {\n\n\t\t\t\t\t\t// three edges per triangle, an edge is represented as (index1, index2)\n\t\t\t\t\t\t// e.g. the first triangle has the following edges: (0,1),(1,2),(2,0)\n\n\t\t\t\t\t\tconst index1 = 3 * i + j;\n\t\t\t\t\t\tvertex.fromBufferAttribute( position, index1 );\n\t\t\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t\t\tconst index2 = 3 * i + ( ( j + 1 ) % 3 );\n\t\t\t\t\t\tvertex.fromBufferAttribute( position, index2 );\n\t\t\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\n\t}\n\n}\n\nvar Geometries = /*#__PURE__*/Object.freeze({\n\t__proto__: null,\n\tBoxGeometry: BoxGeometry,\n\tBoxBufferGeometry: BoxBufferGeometry,\n\tCircleGeometry: CircleGeometry,\n\tCircleBufferGeometry: CircleBufferGeometry,\n\tConeGeometry: ConeGeometry,\n\tConeBufferGeometry: ConeBufferGeometry,\n\tCylinderGeometry: CylinderGeometry,\n\tCylinderBufferGeometry: CylinderBufferGeometry,\n\tDodecahedronGeometry: DodecahedronGeometry,\n\tDodecahedronBufferGeometry: DodecahedronBufferGeometry,\n\tEdgesGeometry: EdgesGeometry,\n\tExtrudeGeometry: ExtrudeGeometry,\n\tExtrudeBufferGeometry: ExtrudeBufferGeometry,\n\tIcosahedronGeometry: IcosahedronGeometry,\n\tIcosahedronBufferGeometry: IcosahedronBufferGeometry,\n\tLatheGeometry: LatheGeometry,\n\tLatheBufferGeometry: LatheBufferGeometry,\n\tOctahedronGeometry: OctahedronGeometry,\n\tOctahedronBufferGeometry: OctahedronBufferGeometry,\n\tParametricGeometry: ParametricGeometry,\n\tParametricBufferGeometry: ParametricBufferGeometry,\n\tPlaneGeometry: PlaneGeometry,\n\tPlaneBufferGeometry: PlaneBufferGeometry,\n\tPolyhedronGeometry: PolyhedronGeometry,\n\tPolyhedronBufferGeometry: PolyhedronBufferGeometry,\n\tRingGeometry: RingGeometry,\n\tRingBufferGeometry: RingBufferGeometry,\n\tShapeGeometry: ShapeGeometry,\n\tShapeBufferGeometry: ShapeBufferGeometry,\n\tSphereGeometry: SphereGeometry,\n\tSphereBufferGeometry: SphereBufferGeometry,\n\tTetrahedronGeometry: TetrahedronGeometry,\n\tTetrahedronBufferGeometry: TetrahedronBufferGeometry,\n\tTextGeometry: TextGeometry,\n\tTextBufferGeometry: TextBufferGeometry,\n\tTorusGeometry: TorusGeometry,\n\tTorusBufferGeometry: TorusBufferGeometry,\n\tTorusKnotGeometry: TorusKnotGeometry,\n\tTorusKnotBufferGeometry: TorusKnotBufferGeometry,\n\tTubeGeometry: TubeGeometry,\n\tTubeBufferGeometry: TubeBufferGeometry,\n\tWireframeGeometry: WireframeGeometry\n});\n\n/**\n * parameters = {\n *  color: <THREE.Color>\n * }\n */\n\nfunction ShadowMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.type = 'ShadowMaterial';\n\n\tthis.color = new Color( 0x000000 );\n\tthis.transparent = true;\n\n\tthis.setValues( parameters );\n\n}\n\nShadowMaterial.prototype = Object.create( Material.prototype );\nShadowMaterial.prototype.constructor = ShadowMaterial;\n\nShadowMaterial.prototype.isShadowMaterial = true;\n\nShadowMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.color.copy( source.color );\n\n\treturn this;\n\n};\n\nfunction RawShaderMaterial( parameters ) {\n\n\tShaderMaterial.call( this, parameters );\n\n\tthis.type = 'RawShaderMaterial';\n\n}\n\nRawShaderMaterial.prototype = Object.create( ShaderMaterial.prototype );\nRawShaderMaterial.prototype.constructor = RawShaderMaterial;\n\nRawShaderMaterial.prototype.isRawShaderMaterial = true;\n\n/**\n * parameters = {\n *  color: <hex>,\n *  roughness: <float>,\n *  metalness: <float>,\n *  opacity: <float>,\n *\n *  map: new THREE.Texture( <Image> ),\n *\n *  lightMap: new THREE.Texture( <Image> ),\n *  lightMapIntensity: <float>\n *\n *  aoMap: new THREE.Texture( <Image> ),\n *  aoMapIntensity: <float>\n *\n *  emissive: <hex>,\n *  emissiveIntensity: <float>\n *  emissiveMap: new THREE.Texture( <Image> ),\n *\n *  bumpMap: new THREE.Texture( <Image> ),\n *  bumpScale: <float>,\n *\n *  normalMap: new THREE.Texture( <Image> ),\n *  normalMapType: THREE.TangentSpaceNormalMap,\n *  normalScale: <Vector2>,\n *\n *  displacementMap: new THREE.Texture( <Image> ),\n *  displacementScale: <float>,\n *  displacementBias: <float>,\n *\n *  roughnessMap: new THREE.Texture( <Image> ),\n *\n *  metalnessMap: new THREE.Texture( <Image> ),\n *\n *  alphaMap: new THREE.Texture( <Image> ),\n *\n *  envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),\n *  envMapIntensity: <float>\n *\n *  refractionRatio: <float>,\n *\n *  wireframe: <boolean>,\n *  wireframeLinewidth: <float>,\n *\n *  skinning: <bool>,\n *  morphTargets: <bool>,\n *  morphNormals: <bool>\n * }\n */\n\nfunction MeshStandardMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.defines = { 'STANDARD': '' };\n\n\tthis.type = 'MeshStandardMaterial';\n\n\tthis.color = new Color( 0xffffff ); // diffuse\n\tthis.roughness = 1.0;\n\tthis.metalness = 0.0;\n\n\tthis.map = null;\n\n\tthis.lightMap = null;\n\tthis.lightMapIntensity = 1.0;\n\n\tthis.aoMap = null;\n\tthis.aoMapIntensity = 1.0;\n\n\tthis.emissive = new Color( 0x000000 );\n\tthis.emissiveIntensity = 1.0;\n\tthis.emissiveMap = null;\n\n\tthis.bumpMap = null;\n\tthis.bumpScale = 1;\n\n\tthis.normalMap = null;\n\tthis.normalMapType = TangentSpaceNormalMap;\n\tthis.normalScale = new Vector2( 1, 1 );\n\n\tthis.displacementMap = null;\n\tthis.displacementScale = 1;\n\tthis.displacementBias = 0;\n\n\tthis.roughnessMap = null;\n\n\tthis.metalnessMap = null;\n\n\tthis.alphaMap = null;\n\n\tthis.envMap = null;\n\tthis.envMapIntensity = 1.0;\n\n\tthis.refractionRatio = 0.98;\n\n\tthis.wireframe = false;\n\tthis.wireframeLinewidth = 1;\n\tthis.wireframeLinecap = 'round';\n\tthis.wireframeLinejoin = 'round';\n\n\tthis.skinning = false;\n\tthis.morphTargets = false;\n\tthis.morphNormals = false;\n\n\tthis.vertexTangents = false;\n\n\tthis.setValues( parameters );\n\n}\n\nMeshStandardMaterial.prototype = Object.create( Material.prototype );\nMeshStandardMaterial.prototype.constructor = MeshStandardMaterial;\n\nMeshStandardMaterial.prototype.isMeshStandardMaterial = true;\n\nMeshStandardMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.defines = { 'STANDARD': '' };\n\n\tthis.color.copy( source.color );\n\tthis.roughness = source.roughness;\n\tthis.metalness = source.metalness;\n\n\tthis.map = source.map;\n\n\tthis.lightMap = source.lightMap;\n\tthis.lightMapIntensity = source.lightMapIntensity;\n\n\tthis.aoMap = source.aoMap;\n\tthis.aoMapIntensity = source.aoMapIntensity;\n\n\tthis.emissive.copy( source.emissive );\n\tthis.emissiveMap = source.emissiveMap;\n\tthis.emissiveIntensity = source.emissiveIntensity;\n\n\tthis.bumpMap = source.bumpMap;\n\tthis.bumpScale = source.bumpScale;\n\n\tthis.normalMap = source.normalMap;\n\tthis.normalMapType = source.normalMapType;\n\tthis.normalScale.copy( source.normalScale );\n\n\tthis.displacementMap = source.displacementMap;\n\tthis.displacementScale = source.displacementScale;\n\tthis.displacementBias = source.displacementBias;\n\n\tthis.roughnessMap = source.roughnessMap;\n\n\tthis.metalnessMap = source.metalnessMap;\n\n\tthis.alphaMap = source.alphaMap;\n\n\tthis.envMap = source.envMap;\n\tthis.envMapIntensity = source.envMapIntensity;\n\n\tthis.refractionRatio = source.refractionRatio;\n\n\tthis.wireframe = source.wireframe;\n\tthis.wireframeLinewidth = source.wireframeLinewidth;\n\tthis.wireframeLinecap = source.wireframeLinecap;\n\tthis.wireframeLinejoin = source.wireframeLinejoin;\n\n\tthis.skinning = source.skinning;\n\tthis.morphTargets = source.morphTargets;\n\tthis.morphNormals = source.morphNormals;\n\n\tthis.vertexTangents = source.vertexTangents;\n\n\treturn this;\n\n};\n\n/**\n * parameters = {\n *  clearcoat: <float>,\n *  clearcoatMap: new THREE.Texture( <Image> ),\n *  clearcoatRoughness: <float>,\n *  clearcoatRoughnessMap: new THREE.Texture( <Image> ),\n *  clearcoatNormalScale: <Vector2>,\n *  clearcoatNormalMap: new THREE.Texture( <Image> ),\n *\n *  reflectivity: <float>,\n *  ior: <float>,\n *\n *  sheen: <Color>,\n *\n *  transmission: <float>,\n *  transmissionMap: new THREE.Texture( <Image> )\n * }\n */\n\nfunction MeshPhysicalMaterial( parameters ) {\n\n\tMeshStandardMaterial.call( this );\n\n\tthis.defines = {\n\n\t\t'STANDARD': '',\n\t\t'PHYSICAL': ''\n\n\t};\n\n\tthis.type = 'MeshPhysicalMaterial';\n\n\tthis.clearcoat = 0.0;\n\tthis.clearcoatMap = null;\n\tthis.clearcoatRoughness = 0.0;\n\tthis.clearcoatRoughnessMap = null;\n\tthis.clearcoatNormalScale = new Vector2( 1, 1 );\n\tthis.clearcoatNormalMap = null;\n\n\tthis.reflectivity = 0.5; // maps to F0 = 0.04\n\n\tObject.defineProperty( this, 'ior', {\n\t\tget: function () {\n\n\t\t\treturn ( 1 + 0.4 * this.reflectivity ) / ( 1 - 0.4 * this.reflectivity );\n\n\t\t},\n\t\tset: function ( ior ) {\n\n\t\t\tthis.reflectivity = MathUtils.clamp( 2.5 * ( ior - 1 ) / ( ior + 1 ), 0, 1 );\n\n\t\t}\n\t} );\n\n\tthis.sheen = null; // null will disable sheen bsdf\n\n\tthis.transmission = 0.0;\n\tthis.transmissionMap = null;\n\n\tthis.setValues( parameters );\n\n}\n\nMeshPhysicalMaterial.prototype = Object.create( MeshStandardMaterial.prototype );\nMeshPhysicalMaterial.prototype.constructor = MeshPhysicalMaterial;\n\nMeshPhysicalMaterial.prototype.isMeshPhysicalMaterial = true;\n\nMeshPhysicalMaterial.prototype.copy = function ( source ) {\n\n\tMeshStandardMaterial.prototype.copy.call( this, source );\n\n\tthis.defines = {\n\n\t\t'STANDARD': '',\n\t\t'PHYSICAL': ''\n\n\t};\n\n\tthis.clearcoat = source.clearcoat;\n\tthis.clearcoatMap = source.clearcoatMap;\n\tthis.clearcoatRoughness = source.clearcoatRoughness;\n\tthis.clearcoatRoughnessMap = source.clearcoatRoughnessMap;\n\tthis.clearcoatNormalMap = source.clearcoatNormalMap;\n\tthis.clearcoatNormalScale.copy( source.clearcoatNormalScale );\n\n\tthis.reflectivity = source.reflectivity;\n\n\tif ( source.sheen ) {\n\n\t\tthis.sheen = ( this.sheen || new Color() ).copy( source.sheen );\n\n\t} else {\n\n\t\tthis.sheen = null;\n\n\t}\n\n\tthis.transmission = source.transmission;\n\tthis.transmissionMap = source.transmissionMap;\n\n\treturn this;\n\n};\n\n/**\n * parameters = {\n *  color: <hex>,\n *  specular: <hex>,\n *  shininess: <float>,\n *  opacity: <float>,\n *\n *  map: new THREE.Texture( <Image> ),\n *\n *  lightMap: new THREE.Texture( <Image> ),\n *  lightMapIntensity: <float>\n *\n *  aoMap: new THREE.Texture( <Image> ),\n *  aoMapIntensity: <float>\n *\n *  emissive: <hex>,\n *  emissiveIntensity: <float>\n *  emissiveMap: new THREE.Texture( <Image> ),\n *\n *  bumpMap: new THREE.Texture( <Image> ),\n *  bumpScale: <float>,\n *\n *  normalMap: new THREE.Texture( <Image> ),\n *  normalMapType: THREE.TangentSpaceNormalMap,\n *  normalScale: <Vector2>,\n *\n *  displacementMap: new THREE.Texture( <Image> ),\n *  displacementScale: <float>,\n *  displacementBias: <float>,\n *\n *  specularMap: new THREE.Texture( <Image> ),\n *\n *  alphaMap: new THREE.Texture( <Image> ),\n *\n *  envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),\n *  combine: THREE.MultiplyOperation,\n *  reflectivity: <float>,\n *  refractionRatio: <float>,\n *\n *  wireframe: <boolean>,\n *  wireframeLinewidth: <float>,\n *\n *  skinning: <bool>,\n *  morphTargets: <bool>,\n *  morphNormals: <bool>\n * }\n */\n\nfunction MeshPhongMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.type = 'MeshPhongMaterial';\n\n\tthis.color = new Color( 0xffffff ); // diffuse\n\tthis.specular = new Color( 0x111111 );\n\tthis.shininess = 30;\n\n\tthis.map = null;\n\n\tthis.lightMap = null;\n\tthis.lightMapIntensity = 1.0;\n\n\tthis.aoMap = null;\n\tthis.aoMapIntensity = 1.0;\n\n\tthis.emissive = new Color( 0x000000 );\n\tthis.emissiveIntensity = 1.0;\n\tthis.emissiveMap = null;\n\n\tthis.bumpMap = null;\n\tthis.bumpScale = 1;\n\n\tthis.normalMap = null;\n\tthis.normalMapType = TangentSpaceNormalMap;\n\tthis.normalScale = new Vector2( 1, 1 );\n\n\tthis.displacementMap = null;\n\tthis.displacementScale = 1;\n\tthis.displacementBias = 0;\n\n\tthis.specularMap = null;\n\n\tthis.alphaMap = null;\n\n\tthis.envMap = null;\n\tthis.combine = MultiplyOperation;\n\tthis.reflectivity = 1;\n\tthis.refractionRatio = 0.98;\n\n\tthis.wireframe = false;\n\tthis.wireframeLinewidth = 1;\n\tthis.wireframeLinecap = 'round';\n\tthis.wireframeLinejoin = 'round';\n\n\tthis.skinning = false;\n\tthis.morphTargets = false;\n\tthis.morphNormals = false;\n\n\tthis.setValues( parameters );\n\n}\n\nMeshPhongMaterial.prototype = Object.create( Material.prototype );\nMeshPhongMaterial.prototype.constructor = MeshPhongMaterial;\n\nMeshPhongMaterial.prototype.isMeshPhongMaterial = true;\n\nMeshPhongMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.color.copy( source.color );\n\tthis.specular.copy( source.specular );\n\tthis.shininess = source.shininess;\n\n\tthis.map = source.map;\n\n\tthis.lightMap = source.lightMap;\n\tthis.lightMapIntensity = source.lightMapIntensity;\n\n\tthis.aoMap = source.aoMap;\n\tthis.aoMapIntensity = source.aoMapIntensity;\n\n\tthis.emissive.copy( source.emissive );\n\tthis.emissiveMap = source.emissiveMap;\n\tthis.emissiveIntensity = source.emissiveIntensity;\n\n\tthis.bumpMap = source.bumpMap;\n\tthis.bumpScale = source.bumpScale;\n\n\tthis.normalMap = source.normalMap;\n\tthis.normalMapType = source.normalMapType;\n\tthis.normalScale.copy( source.normalScale );\n\n\tthis.displacementMap = source.displacementMap;\n\tthis.displacementScale = source.displacementScale;\n\tthis.displacementBias = source.displacementBias;\n\n\tthis.specularMap = source.specularMap;\n\n\tthis.alphaMap = source.alphaMap;\n\n\tthis.envMap = source.envMap;\n\tthis.combine = source.combine;\n\tthis.reflectivity = source.reflectivity;\n\tthis.refractionRatio = source.refractionRatio;\n\n\tthis.wireframe = source.wireframe;\n\tthis.wireframeLinewidth = source.wireframeLinewidth;\n\tthis.wireframeLinecap = source.wireframeLinecap;\n\tthis.wireframeLinejoin = source.wireframeLinejoin;\n\n\tthis.skinning = source.skinning;\n\tthis.morphTargets = source.morphTargets;\n\tthis.morphNormals = source.morphNormals;\n\n\treturn this;\n\n};\n\n/**\n * parameters = {\n *  color: <hex>,\n *\n *  map: new THREE.Texture( <Image> ),\n *  gradientMap: new THREE.Texture( <Image> ),\n *\n *  lightMap: new THREE.Texture( <Image> ),\n *  lightMapIntensity: <float>\n *\n *  aoMap: new THREE.Texture( <Image> ),\n *  aoMapIntensity: <float>\n *\n *  emissive: <hex>,\n *  emissiveIntensity: <float>\n *  emissiveMap: new THREE.Texture( <Image> ),\n *\n *  bumpMap: new THREE.Texture( <Image> ),\n *  bumpScale: <float>,\n *\n *  normalMap: new THREE.Texture( <Image> ),\n *  normalMapType: THREE.TangentSpaceNormalMap,\n *  normalScale: <Vector2>,\n *\n *  displacementMap: new THREE.Texture( <Image> ),\n *  displacementScale: <float>,\n *  displacementBias: <float>,\n *\n *  alphaMap: new THREE.Texture( <Image> ),\n *\n *  wireframe: <boolean>,\n *  wireframeLinewidth: <float>,\n *\n *  skinning: <bool>,\n *  morphTargets: <bool>,\n *  morphNormals: <bool>\n * }\n */\n\nfunction MeshToonMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.defines = { 'TOON': '' };\n\n\tthis.type = 'MeshToonMaterial';\n\n\tthis.color = new Color( 0xffffff );\n\n\tthis.map = null;\n\tthis.gradientMap = null;\n\n\tthis.lightMap = null;\n\tthis.lightMapIntensity = 1.0;\n\n\tthis.aoMap = null;\n\tthis.aoMapIntensity = 1.0;\n\n\tthis.emissive = new Color( 0x000000 );\n\tthis.emissiveIntensity = 1.0;\n\tthis.emissiveMap = null;\n\n\tthis.bumpMap = null;\n\tthis.bumpScale = 1;\n\n\tthis.normalMap = null;\n\tthis.normalMapType = TangentSpaceNormalMap;\n\tthis.normalScale = new Vector2( 1, 1 );\n\n\tthis.displacementMap = null;\n\tthis.displacementScale = 1;\n\tthis.displacementBias = 0;\n\n\tthis.alphaMap = null;\n\n\tthis.wireframe = false;\n\tthis.wireframeLinewidth = 1;\n\tthis.wireframeLinecap = 'round';\n\tthis.wireframeLinejoin = 'round';\n\n\tthis.skinning = false;\n\tthis.morphTargets = false;\n\tthis.morphNormals = false;\n\n\tthis.setValues( parameters );\n\n}\n\nMeshToonMaterial.prototype = Object.create( Material.prototype );\nMeshToonMaterial.prototype.constructor = MeshToonMaterial;\n\nMeshToonMaterial.prototype.isMeshToonMaterial = true;\n\nMeshToonMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.color.copy( source.color );\n\n\tthis.map = source.map;\n\tthis.gradientMap = source.gradientMap;\n\n\tthis.lightMap = source.lightMap;\n\tthis.lightMapIntensity = source.lightMapIntensity;\n\n\tthis.aoMap = source.aoMap;\n\tthis.aoMapIntensity = source.aoMapIntensity;\n\n\tthis.emissive.copy( source.emissive );\n\tthis.emissiveMap = source.emissiveMap;\n\tthis.emissiveIntensity = source.emissiveIntensity;\n\n\tthis.bumpMap = source.bumpMap;\n\tthis.bumpScale = source.bumpScale;\n\n\tthis.normalMap = source.normalMap;\n\tthis.normalMapType = source.normalMapType;\n\tthis.normalScale.copy( source.normalScale );\n\n\tthis.displacementMap = source.displacementMap;\n\tthis.displacementScale = source.displacementScale;\n\tthis.displacementBias = source.displacementBias;\n\n\tthis.alphaMap = source.alphaMap;\n\n\tthis.wireframe = source.wireframe;\n\tthis.wireframeLinewidth = source.wireframeLinewidth;\n\tthis.wireframeLinecap = source.wireframeLinecap;\n\tthis.wireframeLinejoin = source.wireframeLinejoin;\n\n\tthis.skinning = source.skinning;\n\tthis.morphTargets = source.morphTargets;\n\tthis.morphNormals = source.morphNormals;\n\n\treturn this;\n\n};\n\n/**\n * parameters = {\n *  opacity: <float>,\n *\n *  bumpMap: new THREE.Texture( <Image> ),\n *  bumpScale: <float>,\n *\n *  normalMap: new THREE.Texture( <Image> ),\n *  normalMapType: THREE.TangentSpaceNormalMap,\n *  normalScale: <Vector2>,\n *\n *  displacementMap: new THREE.Texture( <Image> ),\n *  displacementScale: <float>,\n *  displacementBias: <float>,\n *\n *  wireframe: <boolean>,\n *  wireframeLinewidth: <float>\n *\n *  skinning: <bool>,\n *  morphTargets: <bool>,\n *  morphNormals: <bool>\n * }\n */\n\nfunction MeshNormalMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.type = 'MeshNormalMaterial';\n\n\tthis.bumpMap = null;\n\tthis.bumpScale = 1;\n\n\tthis.normalMap = null;\n\tthis.normalMapType = TangentSpaceNormalMap;\n\tthis.normalScale = new Vector2( 1, 1 );\n\n\tthis.displacementMap = null;\n\tthis.displacementScale = 1;\n\tthis.displacementBias = 0;\n\n\tthis.wireframe = false;\n\tthis.wireframeLinewidth = 1;\n\n\tthis.fog = false;\n\n\tthis.skinning = false;\n\tthis.morphTargets = false;\n\tthis.morphNormals = false;\n\n\tthis.setValues( parameters );\n\n}\n\nMeshNormalMaterial.prototype = Object.create( Material.prototype );\nMeshNormalMaterial.prototype.constructor = MeshNormalMaterial;\n\nMeshNormalMaterial.prototype.isMeshNormalMaterial = true;\n\nMeshNormalMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.bumpMap = source.bumpMap;\n\tthis.bumpScale = source.bumpScale;\n\n\tthis.normalMap = source.normalMap;\n\tthis.normalMapType = source.normalMapType;\n\tthis.normalScale.copy( source.normalScale );\n\n\tthis.displacementMap = source.displacementMap;\n\tthis.displacementScale = source.displacementScale;\n\tthis.displacementBias = source.displacementBias;\n\n\tthis.wireframe = source.wireframe;\n\tthis.wireframeLinewidth = source.wireframeLinewidth;\n\n\tthis.skinning = source.skinning;\n\tthis.morphTargets = source.morphTargets;\n\tthis.morphNormals = source.morphNormals;\n\n\treturn this;\n\n};\n\n/**\n * parameters = {\n *  color: <hex>,\n *  opacity: <float>,\n *\n *  map: new THREE.Texture( <Image> ),\n *\n *  lightMap: new THREE.Texture( <Image> ),\n *  lightMapIntensity: <float>\n *\n *  aoMap: new THREE.Texture( <Image> ),\n *  aoMapIntensity: <float>\n *\n *  emissive: <hex>,\n *  emissiveIntensity: <float>\n *  emissiveMap: new THREE.Texture( <Image> ),\n *\n *  specularMap: new THREE.Texture( <Image> ),\n *\n *  alphaMap: new THREE.Texture( <Image> ),\n *\n *  envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),\n *  combine: THREE.Multiply,\n *  reflectivity: <float>,\n *  refractionRatio: <float>,\n *\n *  wireframe: <boolean>,\n *  wireframeLinewidth: <float>,\n *\n *  skinning: <bool>,\n *  morphTargets: <bool>,\n *  morphNormals: <bool>\n * }\n */\n\nfunction MeshLambertMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.type = 'MeshLambertMaterial';\n\n\tthis.color = new Color( 0xffffff ); // diffuse\n\n\tthis.map = null;\n\n\tthis.lightMap = null;\n\tthis.lightMapIntensity = 1.0;\n\n\tthis.aoMap = null;\n\tthis.aoMapIntensity = 1.0;\n\n\tthis.emissive = new Color( 0x000000 );\n\tthis.emissiveIntensity = 1.0;\n\tthis.emissiveMap = null;\n\n\tthis.specularMap = null;\n\n\tthis.alphaMap = null;\n\n\tthis.envMap = null;\n\tthis.combine = MultiplyOperation;\n\tthis.reflectivity = 1;\n\tthis.refractionRatio = 0.98;\n\n\tthis.wireframe = false;\n\tthis.wireframeLinewidth = 1;\n\tthis.wireframeLinecap = 'round';\n\tthis.wireframeLinejoin = 'round';\n\n\tthis.skinning = false;\n\tthis.morphTargets = false;\n\tthis.morphNormals = false;\n\n\tthis.setValues( parameters );\n\n}\n\nMeshLambertMaterial.prototype = Object.create( Material.prototype );\nMeshLambertMaterial.prototype.constructor = MeshLambertMaterial;\n\nMeshLambertMaterial.prototype.isMeshLambertMaterial = true;\n\nMeshLambertMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.color.copy( source.color );\n\n\tthis.map = source.map;\n\n\tthis.lightMap = source.lightMap;\n\tthis.lightMapIntensity = source.lightMapIntensity;\n\n\tthis.aoMap = source.aoMap;\n\tthis.aoMapIntensity = source.aoMapIntensity;\n\n\tthis.emissive.copy( source.emissive );\n\tthis.emissiveMap = source.emissiveMap;\n\tthis.emissiveIntensity = source.emissiveIntensity;\n\n\tthis.specularMap = source.specularMap;\n\n\tthis.alphaMap = source.alphaMap;\n\n\tthis.envMap = source.envMap;\n\tthis.combine = source.combine;\n\tthis.reflectivity = source.reflectivity;\n\tthis.refractionRatio = source.refractionRatio;\n\n\tthis.wireframe = source.wireframe;\n\tthis.wireframeLinewidth = source.wireframeLinewidth;\n\tthis.wireframeLinecap = source.wireframeLinecap;\n\tthis.wireframeLinejoin = source.wireframeLinejoin;\n\n\tthis.skinning = source.skinning;\n\tthis.morphTargets = source.morphTargets;\n\tthis.morphNormals = source.morphNormals;\n\n\treturn this;\n\n};\n\n/**\n * parameters = {\n *  color: <hex>,\n *  opacity: <float>,\n *\n *  matcap: new THREE.Texture( <Image> ),\n *\n *  map: new THREE.Texture( <Image> ),\n *\n *  bumpMap: new THREE.Texture( <Image> ),\n *  bumpScale: <float>,\n *\n *  normalMap: new THREE.Texture( <Image> ),\n *  normalMapType: THREE.TangentSpaceNormalMap,\n *  normalScale: <Vector2>,\n *\n *  displacementMap: new THREE.Texture( <Image> ),\n *  displacementScale: <float>,\n *  displacementBias: <float>,\n *\n *  alphaMap: new THREE.Texture( <Image> ),\n *\n *  skinning: <bool>,\n *  morphTargets: <bool>,\n *  morphNormals: <bool>\n * }\n */\n\nfunction MeshMatcapMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.defines = { 'MATCAP': '' };\n\n\tthis.type = 'MeshMatcapMaterial';\n\n\tthis.color = new Color( 0xffffff ); // diffuse\n\n\tthis.matcap = null;\n\n\tthis.map = null;\n\n\tthis.bumpMap = null;\n\tthis.bumpScale = 1;\n\n\tthis.normalMap = null;\n\tthis.normalMapType = TangentSpaceNormalMap;\n\tthis.normalScale = new Vector2( 1, 1 );\n\n\tthis.displacementMap = null;\n\tthis.displacementScale = 1;\n\tthis.displacementBias = 0;\n\n\tthis.alphaMap = null;\n\n\tthis.skinning = false;\n\tthis.morphTargets = false;\n\tthis.morphNormals = false;\n\n\tthis.setValues( parameters );\n\n}\n\nMeshMatcapMaterial.prototype = Object.create( Material.prototype );\nMeshMatcapMaterial.prototype.constructor = MeshMatcapMaterial;\n\nMeshMatcapMaterial.prototype.isMeshMatcapMaterial = true;\n\nMeshMatcapMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.defines = { 'MATCAP': '' };\n\n\tthis.color.copy( source.color );\n\n\tthis.matcap = source.matcap;\n\n\tthis.map = source.map;\n\n\tthis.bumpMap = source.bumpMap;\n\tthis.bumpScale = source.bumpScale;\n\n\tthis.normalMap = source.normalMap;\n\tthis.normalMapType = source.normalMapType;\n\tthis.normalScale.copy( source.normalScale );\n\n\tthis.displacementMap = source.displacementMap;\n\tthis.displacementScale = source.displacementScale;\n\tthis.displacementBias = source.displacementBias;\n\n\tthis.alphaMap = source.alphaMap;\n\n\tthis.skinning = source.skinning;\n\tthis.morphTargets = source.morphTargets;\n\tthis.morphNormals = source.morphNormals;\n\n\treturn this;\n\n};\n\n/**\n * parameters = {\n *  color: <hex>,\n *  opacity: <float>,\n *\n *  linewidth: <float>,\n *\n *  scale: <float>,\n *  dashSize: <float>,\n *  gapSize: <float>\n * }\n */\n\nfunction LineDashedMaterial( parameters ) {\n\n\tLineBasicMaterial.call( this );\n\n\tthis.type = 'LineDashedMaterial';\n\n\tthis.scale = 1;\n\tthis.dashSize = 3;\n\tthis.gapSize = 1;\n\n\tthis.setValues( parameters );\n\n}\n\nLineDashedMaterial.prototype = Object.create( LineBasicMaterial.prototype );\nLineDashedMaterial.prototype.constructor = LineDashedMaterial;\n\nLineDashedMaterial.prototype.isLineDashedMaterial = true;\n\nLineDashedMaterial.prototype.copy = function ( source ) {\n\n\tLineBasicMaterial.prototype.copy.call( this, source );\n\n\tthis.scale = source.scale;\n\tthis.dashSize = source.dashSize;\n\tthis.gapSize = source.gapSize;\n\n\treturn this;\n\n};\n\nvar Materials = /*#__PURE__*/Object.freeze({\n\t__proto__: null,\n\tShadowMaterial: ShadowMaterial,\n\tSpriteMaterial: SpriteMaterial,\n\tRawShaderMaterial: RawShaderMaterial,\n\tShaderMaterial: ShaderMaterial,\n\tPointsMaterial: PointsMaterial,\n\tMeshPhysicalMaterial: MeshPhysicalMaterial,\n\tMeshStandardMaterial: MeshStandardMaterial,\n\tMeshPhongMaterial: MeshPhongMaterial,\n\tMeshToonMaterial: MeshToonMaterial,\n\tMeshNormalMaterial: MeshNormalMaterial,\n\tMeshLambertMaterial: MeshLambertMaterial,\n\tMeshDepthMaterial: MeshDepthMaterial,\n\tMeshDistanceMaterial: MeshDistanceMaterial,\n\tMeshBasicMaterial: MeshBasicMaterial,\n\tMeshMatcapMaterial: MeshMatcapMaterial,\n\tLineDashedMaterial: LineDashedMaterial,\n\tLineBasicMaterial: LineBasicMaterial,\n\tMaterial: Material\n});\n\nconst AnimationUtils = {\n\n\t// same as Array.prototype.slice, but also works on typed arrays\n\tarraySlice: function ( array, from, to ) {\n\n\t\tif ( AnimationUtils.isTypedArray( array ) ) {\n\n\t\t\t// in ios9 array.subarray(from, undefined) will return empty array\n\t\t\t// but array.subarray(from) or array.subarray(from, len) is correct\n\t\t\treturn new array.constructor( array.subarray( from, to !== undefined ? to : array.length ) );\n\n\t\t}\n\n\t\treturn array.slice( from, to );\n\n\t},\n\n\t// converts an array to a specific type\n\tconvertArray: function ( array, type, forceClone ) {\n\n\t\tif ( ! array || // let 'undefined' and 'null' pass\n\t\t\t! forceClone && array.constructor === type ) return array;\n\n\t\tif ( typeof type.BYTES_PER_ELEMENT === 'number' ) {\n\n\t\t\treturn new type( array ); // create typed array\n\n\t\t}\n\n\t\treturn Array.prototype.slice.call( array ); // create Array\n\n\t},\n\n\tisTypedArray: function ( object ) {\n\n\t\treturn ArrayBuffer.isView( object ) &&\n\t\t\t! ( object instanceof DataView );\n\n\t},\n\n\t// returns an array by which times and values can be sorted\n\tgetKeyframeOrder: function ( times ) {\n\n\t\tfunction compareTime( i, j ) {\n\n\t\t\treturn times[ i ] - times[ j ];\n\n\t\t}\n\n\t\tconst n = times.length;\n\t\tconst result = new Array( n );\n\t\tfor ( let i = 0; i !== n; ++ i ) result[ i ] = i;\n\n\t\tresult.sort( compareTime );\n\n\t\treturn result;\n\n\t},\n\n\t// uses the array previously returned by 'getKeyframeOrder' to sort data\n\tsortedArray: function ( values, stride, order ) {\n\n\t\tconst nValues = values.length;\n\t\tconst result = new values.constructor( nValues );\n\n\t\tfor ( let i = 0, dstOffset = 0; dstOffset !== nValues; ++ i ) {\n\n\t\t\tconst srcOffset = order[ i ] * stride;\n\n\t\t\tfor ( let j = 0; j !== stride; ++ j ) {\n\n\t\t\t\tresult[ dstOffset ++ ] = values[ srcOffset + j ];\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn result;\n\n\t},\n\n\t// function for parsing AOS keyframe formats\n\tflattenJSON: function ( jsonKeys, times, values, valuePropertyName ) {\n\n\t\tlet i = 1, key = jsonKeys[ 0 ];\n\n\t\twhile ( key !== undefined && key[ valuePropertyName ] === undefined ) {\n\n\t\t\tkey = jsonKeys[ i ++ ];\n\n\t\t}\n\n\t\tif ( key === undefined ) return; // no data\n\n\t\tlet value = key[ valuePropertyName ];\n\t\tif ( value === undefined ) return; // no data\n\n\t\tif ( Array.isArray( value ) ) {\n\n\t\t\tdo {\n\n\t\t\t\tvalue = key[ valuePropertyName ];\n\n\t\t\t\tif ( value !== undefined ) {\n\n\t\t\t\t\ttimes.push( key.time );\n\t\t\t\t\tvalues.push.apply( values, value ); // push all elements\n\n\t\t\t\t}\n\n\t\t\t\tkey = jsonKeys[ i ++ ];\n\n\t\t\t} while ( key !== undefined );\n\n\t\t} else if ( value.toArray !== undefined ) {\n\n\t\t\t// ...assume THREE.Math-ish\n\n\t\t\tdo {\n\n\t\t\t\tvalue = key[ valuePropertyName ];\n\n\t\t\t\tif ( value !== undefined ) {\n\n\t\t\t\t\ttimes.push( key.time );\n\t\t\t\t\tvalue.toArray( values, values.length );\n\n\t\t\t\t}\n\n\t\t\t\tkey = jsonKeys[ i ++ ];\n\n\t\t\t} while ( key !== undefined );\n\n\t\t} else {\n\n\t\t\t// otherwise push as-is\n\n\t\t\tdo {\n\n\t\t\t\tvalue = key[ valuePropertyName ];\n\n\t\t\t\tif ( value !== undefined ) {\n\n\t\t\t\t\ttimes.push( key.time );\n\t\t\t\t\tvalues.push( value );\n\n\t\t\t\t}\n\n\t\t\t\tkey = jsonKeys[ i ++ ];\n\n\t\t\t} while ( key !== undefined );\n\n\t\t}\n\n\t},\n\n\tsubclip: function ( sourceClip, name, startFrame, endFrame, fps = 30 ) {\n\n\t\tconst clip = sourceClip.clone();\n\n\t\tclip.name = name;\n\n\t\tconst tracks = [];\n\n\t\tfor ( let i = 0; i < clip.tracks.length; ++ i ) {\n\n\t\t\tconst track = clip.tracks[ i ];\n\t\t\tconst valueSize = track.getValueSize();\n\n\t\t\tconst times = [];\n\t\t\tconst values = [];\n\n\t\t\tfor ( let j = 0; j < track.times.length; ++ j ) {\n\n\t\t\t\tconst frame = track.times[ j ] * fps;\n\n\t\t\t\tif ( frame < startFrame || frame >= endFrame ) continue;\n\n\t\t\t\ttimes.push( track.times[ j ] );\n\n\t\t\t\tfor ( let k = 0; k < valueSize; ++ k ) {\n\n\t\t\t\t\tvalues.push( track.values[ j * valueSize + k ] );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( times.length === 0 ) continue;\n\n\t\t\ttrack.times = AnimationUtils.convertArray( times, track.times.constructor );\n\t\t\ttrack.values = AnimationUtils.convertArray( values, track.values.constructor );\n\n\t\t\ttracks.push( track );\n\n\t\t}\n\n\t\tclip.tracks = tracks;\n\n\t\t// find minimum .times value across all tracks in the trimmed clip\n\n\t\tlet minStartTime = Infinity;\n\n\t\tfor ( let i = 0; i < clip.tracks.length; ++ i ) {\n\n\t\t\tif ( minStartTime > clip.tracks[ i ].times[ 0 ] ) {\n\n\t\t\t\tminStartTime = clip.tracks[ i ].times[ 0 ];\n\n\t\t\t}\n\n\t\t}\n\n\t\t// shift all tracks such that clip begins at t=0\n\n\t\tfor ( let i = 0; i < clip.tracks.length; ++ i ) {\n\n\t\t\tclip.tracks[ i ].shift( - 1 * minStartTime );\n\n\t\t}\n\n\t\tclip.resetDuration();\n\n\t\treturn clip;\n\n\t},\n\n\tmakeClipAdditive: function ( targetClip, referenceFrame = 0, referenceClip = targetClip, fps = 30 ) {\n\n\t\tif ( fps <= 0 ) fps = 30;\n\n\t\tconst numTracks = referenceClip.tracks.length;\n\t\tconst referenceTime = referenceFrame / fps;\n\n\t\t// Make each track's values relative to the values at the reference frame\n\t\tfor ( let i = 0; i < numTracks; ++ i ) {\n\n\t\t\tconst referenceTrack = referenceClip.tracks[ i ];\n\t\t\tconst referenceTrackType = referenceTrack.ValueTypeName;\n\n\t\t\t// Skip this track if it's non-numeric\n\t\t\tif ( referenceTrackType === 'bool' || referenceTrackType === 'string' ) continue;\n\n\t\t\t// Find the track in the target clip whose name and type matches the reference track\n\t\t\tconst targetTrack = targetClip.tracks.find( function ( track ) {\n\n\t\t\t\treturn track.name === referenceTrack.name\n\t\t\t\t\t&& track.ValueTypeName === referenceTrackType;\n\n\t\t\t} );\n\n\t\t\tif ( targetTrack === undefined ) continue;\n\n\t\t\tlet referenceOffset = 0;\n\t\t\tconst referenceValueSize = referenceTrack.getValueSize();\n\n\t\t\tif ( referenceTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline ) {\n\n\t\t\t\treferenceOffset = referenceValueSize / 3;\n\n\t\t\t}\n\n\t\t\tlet targetOffset = 0;\n\t\t\tconst targetValueSize = targetTrack.getValueSize();\n\n\t\t\tif ( targetTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline ) {\n\n\t\t\t\ttargetOffset = targetValueSize / 3;\n\n\t\t\t}\n\n\t\t\tconst lastIndex = referenceTrack.times.length - 1;\n\t\t\tlet referenceValue;\n\n\t\t\t// Find the value to subtract out of the track\n\t\t\tif ( referenceTime <= referenceTrack.times[ 0 ] ) {\n\n\t\t\t\t// Reference frame is earlier than the first keyframe, so just use the first keyframe\n\t\t\t\tconst startIndex = referenceOffset;\n\t\t\t\tconst endIndex = referenceValueSize - referenceOffset;\n\t\t\t\treferenceValue = AnimationUtils.arraySlice( referenceTrack.values, startIndex, endIndex );\n\n\t\t\t} else if ( referenceTime >= referenceTrack.times[ lastIndex ] ) {\n\n\t\t\t\t// Reference frame is after the last keyframe, so just use the last keyframe\n\t\t\t\tconst startIndex = lastIndex * referenceValueSize + referenceOffset;\n\t\t\t\tconst endIndex = startIndex + referenceValueSize - referenceOffset;\n\t\t\t\treferenceValue = AnimationUtils.arraySlice( referenceTrack.values, startIndex, endIndex );\n\n\t\t\t} else {\n\n\t\t\t\t// Interpolate to the reference value\n\t\t\t\tconst interpolant = referenceTrack.createInterpolant();\n\t\t\t\tconst startIndex = referenceOffset;\n\t\t\t\tconst endIndex = referenceValueSize - referenceOffset;\n\t\t\t\tinterpolant.evaluate( referenceTime );\n\t\t\t\treferenceValue = AnimationUtils.arraySlice( interpolant.resultBuffer, startIndex, endIndex );\n\n\t\t\t}\n\n\t\t\t// Conjugate the quaternion\n\t\t\tif ( referenceTrackType === 'quaternion' ) {\n\n\t\t\t\tconst referenceQuat = new Quaternion().fromArray( referenceValue ).normalize().conjugate();\n\t\t\t\treferenceQuat.toArray( referenceValue );\n\n\t\t\t}\n\n\t\t\t// Subtract the reference value from all of the track values\n\n\t\t\tconst numTimes = targetTrack.times.length;\n\t\t\tfor ( let j = 0; j < numTimes; ++ j ) {\n\n\t\t\t\tconst valueStart = j * targetValueSize + targetOffset;\n\n\t\t\t\tif ( referenceTrackType === 'quaternion' ) {\n\n\t\t\t\t\t// Multiply the conjugate for quaternion track types\n\t\t\t\t\tQuaternion.multiplyQuaternionsFlat(\n\t\t\t\t\t\ttargetTrack.values,\n\t\t\t\t\t\tvalueStart,\n\t\t\t\t\t\treferenceValue,\n\t\t\t\t\t\t0,\n\t\t\t\t\t\ttargetTrack.values,\n\t\t\t\t\t\tvalueStart\n\t\t\t\t\t);\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconst valueEnd = targetValueSize - targetOffset * 2;\n\n\t\t\t\t\t// Subtract each value for all other numeric track types\n\t\t\t\t\tfor ( let k = 0; k < valueEnd; ++ k ) {\n\n\t\t\t\t\t\ttargetTrack.values[ valueStart + k ] -= referenceValue[ k ];\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\ttargetClip.blendMode = AdditiveAnimationBlendMode;\n\n\t\treturn targetClip;\n\n\t}\n\n};\n\n/**\n * Abstract base class of interpolants over parametric samples.\n *\n * The parameter domain is one dimensional, typically the time or a path\n * along a curve defined by the data.\n *\n * The sample values can have any dimensionality and derived classes may\n * apply special interpretations to the data.\n *\n * This class provides the interval seek in a Template Method, deferring\n * the actual interpolation to derived classes.\n *\n * Time complexity is O(1) for linear access crossing at most two points\n * and O(log N) for random access, where N is the number of positions.\n *\n * References:\n *\n * \t\thttp://www.oodesign.com/template-method-pattern.html\n *\n */\n\nfunction Interpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {\n\n\tthis.parameterPositions = parameterPositions;\n\tthis._cachedIndex = 0;\n\n\tthis.resultBuffer = resultBuffer !== undefined ?\n\t\tresultBuffer : new sampleValues.constructor( sampleSize );\n\tthis.sampleValues = sampleValues;\n\tthis.valueSize = sampleSize;\n\n}\n\nObject.assign( Interpolant.prototype, {\n\n\tevaluate: function ( t ) {\n\n\t\tconst pp = this.parameterPositions;\n\t\tlet i1 = this._cachedIndex,\n\t\t\tt1 = pp[ i1 ],\n\t\t\tt0 = pp[ i1 - 1 ];\n\n\t\tvalidate_interval: {\n\n\t\t\tseek: {\n\n\t\t\t\tlet right;\n\n\t\t\t\tlinear_scan: {\n\n\t\t\t\t\t//- See http://jsperf.com/comparison-to-undefined/3\n\t\t\t\t\t//- slower code:\n\t\t\t\t\t//-\n\t\t\t\t\t//- \t\t\t\tif ( t >= t1 || t1 === undefined ) {\n\t\t\t\t\tforward_scan: if ( ! ( t < t1 ) ) {\n\n\t\t\t\t\t\tfor ( let giveUpAt = i1 + 2; ; ) {\n\n\t\t\t\t\t\t\tif ( t1 === undefined ) {\n\n\t\t\t\t\t\t\t\tif ( t < t0 ) break forward_scan;\n\n\t\t\t\t\t\t\t\t// after end\n\n\t\t\t\t\t\t\t\ti1 = pp.length;\n\t\t\t\t\t\t\t\tthis._cachedIndex = i1;\n\t\t\t\t\t\t\t\treturn this.afterEnd_( i1 - 1, t, t0 );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tif ( i1 === giveUpAt ) break; // this loop\n\n\t\t\t\t\t\t\tt0 = t1;\n\t\t\t\t\t\t\tt1 = pp[ ++ i1 ];\n\n\t\t\t\t\t\t\tif ( t < t1 ) {\n\n\t\t\t\t\t\t\t\t// we have arrived at the sought interval\n\t\t\t\t\t\t\t\tbreak seek;\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// prepare binary search on the right side of the index\n\t\t\t\t\t\tright = pp.length;\n\t\t\t\t\t\tbreak linear_scan;\n\n\t\t\t\t\t}\n\n\t\t\t\t\t//- slower code:\n\t\t\t\t\t//-\t\t\t\t\tif ( t < t0 || t0 === undefined ) {\n\t\t\t\t\tif ( ! ( t >= t0 ) ) {\n\n\t\t\t\t\t\t// looping?\n\n\t\t\t\t\t\tconst t1global = pp[ 1 ];\n\n\t\t\t\t\t\tif ( t < t1global ) {\n\n\t\t\t\t\t\t\ti1 = 2; // + 1, using the scan for the details\n\t\t\t\t\t\t\tt0 = t1global;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// linear reverse scan\n\n\t\t\t\t\t\tfor ( let giveUpAt = i1 - 2; ; ) {\n\n\t\t\t\t\t\t\tif ( t0 === undefined ) {\n\n\t\t\t\t\t\t\t\t// before start\n\n\t\t\t\t\t\t\t\tthis._cachedIndex = 0;\n\t\t\t\t\t\t\t\treturn this.beforeStart_( 0, t, t1 );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tif ( i1 === giveUpAt ) break; // this loop\n\n\t\t\t\t\t\t\tt1 = t0;\n\t\t\t\t\t\t\tt0 = pp[ -- i1 - 1 ];\n\n\t\t\t\t\t\t\tif ( t >= t0 ) {\n\n\t\t\t\t\t\t\t\t// we have arrived at the sought interval\n\t\t\t\t\t\t\t\tbreak seek;\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// prepare binary search on the left side of the index\n\t\t\t\t\t\tright = i1;\n\t\t\t\t\t\ti1 = 0;\n\t\t\t\t\t\tbreak linear_scan;\n\n\t\t\t\t\t}\n\n\t\t\t\t\t// the interval is valid\n\n\t\t\t\t\tbreak validate_interval;\n\n\t\t\t\t} // linear scan\n\n\t\t\t\t// binary search\n\n\t\t\t\twhile ( i1 < right ) {\n\n\t\t\t\t\tconst mid = ( i1 + right ) >>> 1;\n\n\t\t\t\t\tif ( t < pp[ mid ] ) {\n\n\t\t\t\t\t\tright = mid;\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\ti1 = mid + 1;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tt1 = pp[ i1 ];\n\t\t\t\tt0 = pp[ i1 - 1 ];\n\n\t\t\t\t// check boundary cases, again\n\n\t\t\t\tif ( t0 === undefined ) {\n\n\t\t\t\t\tthis._cachedIndex = 0;\n\t\t\t\t\treturn this.beforeStart_( 0, t, t1 );\n\n\t\t\t\t}\n\n\t\t\t\tif ( t1 === undefined ) {\n\n\t\t\t\t\ti1 = pp.length;\n\t\t\t\t\tthis._cachedIndex = i1;\n\t\t\t\t\treturn this.afterEnd_( i1 - 1, t0, t );\n\n\t\t\t\t}\n\n\t\t\t} // seek\n\n\t\t\tthis._cachedIndex = i1;\n\n\t\t\tthis.intervalChanged_( i1, t0, t1 );\n\n\t\t} // validate_interval\n\n\t\treturn this.interpolate_( i1, t0, t, t1 );\n\n\t},\n\n\tsettings: null, // optional, subclass-specific settings structure\n\t// Note: The indirection allows central control of many interpolants.\n\n\t// --- Protected interface\n\n\tDefaultSettings_: {},\n\n\tgetSettings_: function () {\n\n\t\treturn this.settings || this.DefaultSettings_;\n\n\t},\n\n\tcopySampleValue_: function ( index ) {\n\n\t\t// copies a sample value to the result buffer\n\n\t\tconst result = this.resultBuffer,\n\t\t\tvalues = this.sampleValues,\n\t\t\tstride = this.valueSize,\n\t\t\toffset = index * stride;\n\n\t\tfor ( let i = 0; i !== stride; ++ i ) {\n\n\t\t\tresult[ i ] = values[ offset + i ];\n\n\t\t}\n\n\t\treturn result;\n\n\t},\n\n\t// Template methods for derived classes:\n\n\tinterpolate_: function ( /* i1, t0, t, t1 */ ) {\n\n\t\tthrow new Error( 'call to abstract method' );\n\t\t// implementations shall return this.resultBuffer\n\n\t},\n\n\tintervalChanged_: function ( /* i1, t0, t1 */ ) {\n\n\t\t// empty\n\n\t}\n\n} );\n\n// DECLARE ALIAS AFTER assign prototype\nObject.assign( Interpolant.prototype, {\n\n\t//( 0, t, t0 ), returns this.resultBuffer\n\tbeforeStart_: Interpolant.prototype.copySampleValue_,\n\n\t//( N-1, tN-1, t ), returns this.resultBuffer\n\tafterEnd_: Interpolant.prototype.copySampleValue_,\n\n} );\n\n/**\n * Fast and simple cubic spline interpolant.\n *\n * It was derived from a Hermitian construction setting the first derivative\n * at each sample position to the linear slope between neighboring positions\n * over their parameter interval.\n */\n\nfunction CubicInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {\n\n\tInterpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );\n\n\tthis._weightPrev = - 0;\n\tthis._offsetPrev = - 0;\n\tthis._weightNext = - 0;\n\tthis._offsetNext = - 0;\n\n}\n\nCubicInterpolant.prototype = Object.assign( Object.create( Interpolant.prototype ), {\n\n\tconstructor: CubicInterpolant,\n\n\tDefaultSettings_: {\n\n\t\tendingStart: ZeroCurvatureEnding,\n\t\tendingEnd: ZeroCurvatureEnding\n\n\t},\n\n\tintervalChanged_: function ( i1, t0, t1 ) {\n\n\t\tconst pp = this.parameterPositions;\n\t\tlet iPrev = i1 - 2,\n\t\t\tiNext = i1 + 1,\n\n\t\t\ttPrev = pp[ iPrev ],\n\t\t\ttNext = pp[ iNext ];\n\n\t\tif ( tPrev === undefined ) {\n\n\t\t\tswitch ( this.getSettings_().endingStart ) {\n\n\t\t\t\tcase ZeroSlopeEnding:\n\n\t\t\t\t\t// f'(t0) = 0\n\t\t\t\t\tiPrev = i1;\n\t\t\t\t\ttPrev = 2 * t0 - t1;\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase WrapAroundEnding:\n\n\t\t\t\t\t// use the other end of the curve\n\t\t\t\t\tiPrev = pp.length - 2;\n\t\t\t\t\ttPrev = t0 + pp[ iPrev ] - pp[ iPrev + 1 ];\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tdefault: // ZeroCurvatureEnding\n\n\t\t\t\t\t// f''(t0) = 0 a.k.a. Natural Spline\n\t\t\t\t\tiPrev = i1;\n\t\t\t\t\ttPrev = t1;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( tNext === undefined ) {\n\n\t\t\tswitch ( this.getSettings_().endingEnd ) {\n\n\t\t\t\tcase ZeroSlopeEnding:\n\n\t\t\t\t\t// f'(tN) = 0\n\t\t\t\t\tiNext = i1;\n\t\t\t\t\ttNext = 2 * t1 - t0;\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase WrapAroundEnding:\n\n\t\t\t\t\t// use the other end of the curve\n\t\t\t\t\tiNext = 1;\n\t\t\t\t\ttNext = t1 + pp[ 1 ] - pp[ 0 ];\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tdefault: // ZeroCurvatureEnding\n\n\t\t\t\t\t// f''(tN) = 0, a.k.a. Natural Spline\n\t\t\t\t\tiNext = i1 - 1;\n\t\t\t\t\ttNext = t0;\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst halfDt = ( t1 - t0 ) * 0.5,\n\t\t\tstride = this.valueSize;\n\n\t\tthis._weightPrev = halfDt / ( t0 - tPrev );\n\t\tthis._weightNext = halfDt / ( tNext - t1 );\n\t\tthis._offsetPrev = iPrev * stride;\n\t\tthis._offsetNext = iNext * stride;\n\n\t},\n\n\tinterpolate_: function ( i1, t0, t, t1 ) {\n\n\t\tconst result = this.resultBuffer,\n\t\t\tvalues = this.sampleValues,\n\t\t\tstride = this.valueSize,\n\n\t\t\to1 = i1 * stride,\t\to0 = o1 - stride,\n\t\t\toP = this._offsetPrev, \toN = this._offsetNext,\n\t\t\twP = this._weightPrev,\twN = this._weightNext,\n\n\t\t\tp = ( t - t0 ) / ( t1 - t0 ),\n\t\t\tpp = p * p,\n\t\t\tppp = pp * p;\n\n\t\t// evaluate polynomials\n\n\t\tconst sP = - wP * ppp + 2 * wP * pp - wP * p;\n\t\tconst s0 = ( 1 + wP ) * ppp + ( - 1.5 - 2 * wP ) * pp + ( - 0.5 + wP ) * p + 1;\n\t\tconst s1 = ( - 1 - wN ) * ppp + ( 1.5 + wN ) * pp + 0.5 * p;\n\t\tconst sN = wN * ppp - wN * pp;\n\n\t\t// combine data linearly\n\n\t\tfor ( let i = 0; i !== stride; ++ i ) {\n\n\t\t\tresult[ i ] =\n\t\t\t\t\tsP * values[ oP + i ] +\n\t\t\t\t\ts0 * values[ o0 + i ] +\n\t\t\t\t\ts1 * values[ o1 + i ] +\n\t\t\t\t\tsN * values[ oN + i ];\n\n\t\t}\n\n\t\treturn result;\n\n\t}\n\n} );\n\nfunction LinearInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {\n\n\tInterpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );\n\n}\n\nLinearInterpolant.prototype = Object.assign( Object.create( Interpolant.prototype ), {\n\n\tconstructor: LinearInterpolant,\n\n\tinterpolate_: function ( i1, t0, t, t1 ) {\n\n\t\tconst result = this.resultBuffer,\n\t\t\tvalues = this.sampleValues,\n\t\t\tstride = this.valueSize,\n\n\t\t\toffset1 = i1 * stride,\n\t\t\toffset0 = offset1 - stride,\n\n\t\t\tweight1 = ( t - t0 ) / ( t1 - t0 ),\n\t\t\tweight0 = 1 - weight1;\n\n\t\tfor ( let i = 0; i !== stride; ++ i ) {\n\n\t\t\tresult[ i ] =\n\t\t\t\t\tvalues[ offset0 + i ] * weight0 +\n\t\t\t\t\tvalues[ offset1 + i ] * weight1;\n\n\t\t}\n\n\t\treturn result;\n\n\t}\n\n} );\n\n/**\n *\n * Interpolant that evaluates to the sample value at the position preceeding\n * the parameter.\n */\n\nfunction DiscreteInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {\n\n\tInterpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );\n\n}\n\nDiscreteInterpolant.prototype = Object.assign( Object.create( Interpolant.prototype ), {\n\n\tconstructor: DiscreteInterpolant,\n\n\tinterpolate_: function ( i1 /*, t0, t, t1 */ ) {\n\n\t\treturn this.copySampleValue_( i1 - 1 );\n\n\t}\n\n} );\n\nfunction KeyframeTrack( name, times, values, interpolation ) {\n\n\tif ( name === undefined ) throw new Error( 'THREE.KeyframeTrack: track name is undefined' );\n\tif ( times === undefined || times.length === 0 ) throw new Error( 'THREE.KeyframeTrack: no keyframes in track named ' + name );\n\n\tthis.name = name;\n\n\tthis.times = AnimationUtils.convertArray( times, this.TimeBufferType );\n\tthis.values = AnimationUtils.convertArray( values, this.ValueBufferType );\n\n\tthis.setInterpolation( interpolation || this.DefaultInterpolation );\n\n}\n\n// Static methods\n\nObject.assign( KeyframeTrack, {\n\n\t// Serialization (in static context, because of constructor invocation\n\t// and automatic invocation of .toJSON):\n\n\ttoJSON: function ( track ) {\n\n\t\tconst trackType = track.constructor;\n\n\t\tlet json;\n\n\t\t// derived classes can define a static toJSON method\n\t\tif ( trackType.toJSON !== undefined ) {\n\n\t\t\tjson = trackType.toJSON( track );\n\n\t\t} else {\n\n\t\t\t// by default, we assume the data can be serialized as-is\n\t\t\tjson = {\n\n\t\t\t\t'name': track.name,\n\t\t\t\t'times': AnimationUtils.convertArray( track.times, Array ),\n\t\t\t\t'values': AnimationUtils.convertArray( track.values, Array )\n\n\t\t\t};\n\n\t\t\tconst interpolation = track.getInterpolation();\n\n\t\t\tif ( interpolation !== track.DefaultInterpolation ) {\n\n\t\t\t\tjson.interpolation = interpolation;\n\n\t\t\t}\n\n\t\t}\n\n\t\tjson.type = track.ValueTypeName; // mandatory\n\n\t\treturn json;\n\n\t}\n\n} );\n\nObject.assign( KeyframeTrack.prototype, {\n\n\tconstructor: KeyframeTrack,\n\n\tTimeBufferType: Float32Array,\n\n\tValueBufferType: Float32Array,\n\n\tDefaultInterpolation: InterpolateLinear,\n\n\tInterpolantFactoryMethodDiscrete: function ( result ) {\n\n\t\treturn new DiscreteInterpolant( this.times, this.values, this.getValueSize(), result );\n\n\t},\n\n\tInterpolantFactoryMethodLinear: function ( result ) {\n\n\t\treturn new LinearInterpolant( this.times, this.values, this.getValueSize(), result );\n\n\t},\n\n\tInterpolantFactoryMethodSmooth: function ( result ) {\n\n\t\treturn new CubicInterpolant( this.times, this.values, this.getValueSize(), result );\n\n\t},\n\n\tsetInterpolation: function ( interpolation ) {\n\n\t\tlet factoryMethod;\n\n\t\tswitch ( interpolation ) {\n\n\t\t\tcase InterpolateDiscrete:\n\n\t\t\t\tfactoryMethod = this.InterpolantFactoryMethodDiscrete;\n\n\t\t\t\tbreak;\n\n\t\t\tcase InterpolateLinear:\n\n\t\t\t\tfactoryMethod = this.InterpolantFactoryMethodLinear;\n\n\t\t\t\tbreak;\n\n\t\t\tcase InterpolateSmooth:\n\n\t\t\t\tfactoryMethod = this.InterpolantFactoryMethodSmooth;\n\n\t\t\t\tbreak;\n\n\t\t}\n\n\t\tif ( factoryMethod === undefined ) {\n\n\t\t\tconst message = 'unsupported interpolation for ' +\n\t\t\t\tthis.ValueTypeName + ' keyframe track named ' + this.name;\n\n\t\t\tif ( this.createInterpolant === undefined ) {\n\n\t\t\t\t// fall back to default, unless the default itself is messed up\n\t\t\t\tif ( interpolation !== this.DefaultInterpolation ) {\n\n\t\t\t\t\tthis.setInterpolation( this.DefaultInterpolation );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthrow new Error( message ); // fatal, in this case\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tconsole.warn( 'THREE.KeyframeTrack:', message );\n\t\t\treturn this;\n\n\t\t}\n\n\t\tthis.createInterpolant = factoryMethod;\n\n\t\treturn this;\n\n\t},\n\n\tgetInterpolation: function () {\n\n\t\tswitch ( this.createInterpolant ) {\n\n\t\t\tcase this.InterpolantFactoryMethodDiscrete:\n\n\t\t\t\treturn InterpolateDiscrete;\n\n\t\t\tcase this.InterpolantFactoryMethodLinear:\n\n\t\t\t\treturn InterpolateLinear;\n\n\t\t\tcase this.InterpolantFactoryMethodSmooth:\n\n\t\t\t\treturn InterpolateSmooth;\n\n\t\t}\n\n\t},\n\n\tgetValueSize: function () {\n\n\t\treturn this.values.length / this.times.length;\n\n\t},\n\n\t// move all keyframes either forwards or backwards in time\n\tshift: function ( timeOffset ) {\n\n\t\tif ( timeOffset !== 0.0 ) {\n\n\t\t\tconst times = this.times;\n\n\t\t\tfor ( let i = 0, n = times.length; i !== n; ++ i ) {\n\n\t\t\t\ttimes[ i ] += timeOffset;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\t// scale all keyframe times by a factor (useful for frame <-> seconds conversions)\n\tscale: function ( timeScale ) {\n\n\t\tif ( timeScale !== 1.0 ) {\n\n\t\t\tconst times = this.times;\n\n\t\t\tfor ( let i = 0, n = times.length; i !== n; ++ i ) {\n\n\t\t\t\ttimes[ i ] *= timeScale;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\t// removes keyframes before and after animation without changing any values within the range [startTime, endTime].\n\t// IMPORTANT: We do not shift around keys to the start of the track time, because for interpolated keys this will change their values\n\ttrim: function ( startTime, endTime ) {\n\n\t\tconst times = this.times,\n\t\t\tnKeys = times.length;\n\n\t\tlet from = 0,\n\t\t\tto = nKeys - 1;\n\n\t\twhile ( from !== nKeys && times[ from ] < startTime ) {\n\n\t\t\t++ from;\n\n\t\t}\n\n\t\twhile ( to !== - 1 && times[ to ] > endTime ) {\n\n\t\t\t-- to;\n\n\t\t}\n\n\t\t++ to; // inclusive -> exclusive bound\n\n\t\tif ( from !== 0 || to !== nKeys ) {\n\n\t\t\t// empty tracks are forbidden, so keep at least one keyframe\n\t\t\tif ( from >= to ) {\n\n\t\t\t\tto = Math.max( to, 1 );\n\t\t\t\tfrom = to - 1;\n\n\t\t\t}\n\n\t\t\tconst stride = this.getValueSize();\n\t\t\tthis.times = AnimationUtils.arraySlice( times, from, to );\n\t\t\tthis.values = AnimationUtils.arraySlice( this.values, from * stride, to * stride );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\t// ensure we do not get a GarbageInGarbageOut situation, make sure tracks are at least minimally viable\n\tvalidate: function () {\n\n\t\tlet valid = true;\n\n\t\tconst valueSize = this.getValueSize();\n\t\tif ( valueSize - Math.floor( valueSize ) !== 0 ) {\n\n\t\t\tconsole.error( 'THREE.KeyframeTrack: Invalid value size in track.', this );\n\t\t\tvalid = false;\n\n\t\t}\n\n\t\tconst times = this.times,\n\t\t\tvalues = this.values,\n\n\t\t\tnKeys = times.length;\n\n\t\tif ( nKeys === 0 ) {\n\n\t\t\tconsole.error( 'THREE.KeyframeTrack: Track is empty.', this );\n\t\t\tvalid = false;\n\n\t\t}\n\n\t\tlet prevTime = null;\n\n\t\tfor ( let i = 0; i !== nKeys; i ++ ) {\n\n\t\t\tconst currTime = times[ i ];\n\n\t\t\tif ( typeof currTime === 'number' && isNaN( currTime ) ) {\n\n\t\t\t\tconsole.error( 'THREE.KeyframeTrack: Time is not a valid number.', this, i, currTime );\n\t\t\t\tvalid = false;\n\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t\tif ( prevTime !== null && prevTime > currTime ) {\n\n\t\t\t\tconsole.error( 'THREE.KeyframeTrack: Out of order keys.', this, i, currTime, prevTime );\n\t\t\t\tvalid = false;\n\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t\tprevTime = currTime;\n\n\t\t}\n\n\t\tif ( values !== undefined ) {\n\n\t\t\tif ( AnimationUtils.isTypedArray( values ) ) {\n\n\t\t\t\tfor ( let i = 0, n = values.length; i !== n; ++ i ) {\n\n\t\t\t\t\tconst value = values[ i ];\n\n\t\t\t\t\tif ( isNaN( value ) ) {\n\n\t\t\t\t\t\tconsole.error( 'THREE.KeyframeTrack: Value is not a valid number.', this, i, value );\n\t\t\t\t\t\tvalid = false;\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn valid;\n\n\t},\n\n\t// removes equivalent sequential keys as common in morph target sequences\n\t// (0,0,0,0,1,1,1,0,0,0,0,0,0,0) --> (0,0,1,1,0,0)\n\toptimize: function () {\n\n\t\t// times or values may be shared with other tracks, so overwriting is unsafe\n\t\tconst times = AnimationUtils.arraySlice( this.times ),\n\t\t\tvalues = AnimationUtils.arraySlice( this.values ),\n\t\t\tstride = this.getValueSize(),\n\n\t\t\tsmoothInterpolation = this.getInterpolation() === InterpolateSmooth,\n\n\t\t\tlastIndex = times.length - 1;\n\n\t\tlet writeIndex = 1;\n\n\t\tfor ( let i = 1; i < lastIndex; ++ i ) {\n\n\t\t\tlet keep = false;\n\n\t\t\tconst time = times[ i ];\n\t\t\tconst timeNext = times[ i + 1 ];\n\n\t\t\t// remove adjacent keyframes scheduled at the same time\n\n\t\t\tif ( time !== timeNext && ( i !== 1 || time !== time[ 0 ] ) ) {\n\n\t\t\t\tif ( ! smoothInterpolation ) {\n\n\t\t\t\t\t// remove unnecessary keyframes same as their neighbors\n\n\t\t\t\t\tconst offset = i * stride,\n\t\t\t\t\t\toffsetP = offset - stride,\n\t\t\t\t\t\toffsetN = offset + stride;\n\n\t\t\t\t\tfor ( let j = 0; j !== stride; ++ j ) {\n\n\t\t\t\t\t\tconst value = values[ offset + j ];\n\n\t\t\t\t\t\tif ( value !== values[ offsetP + j ] ||\n\t\t\t\t\t\t\tvalue !== values[ offsetN + j ] ) {\n\n\t\t\t\t\t\t\tkeep = true;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\tkeep = true;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// in-place compaction\n\n\t\t\tif ( keep ) {\n\n\t\t\t\tif ( i !== writeIndex ) {\n\n\t\t\t\t\ttimes[ writeIndex ] = times[ i ];\n\n\t\t\t\t\tconst readOffset = i * stride,\n\t\t\t\t\t\twriteOffset = writeIndex * stride;\n\n\t\t\t\t\tfor ( let j = 0; j !== stride; ++ j ) {\n\n\t\t\t\t\t\tvalues[ writeOffset + j ] = values[ readOffset + j ];\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\t++ writeIndex;\n\n\t\t\t}\n\n\t\t}\n\n\t\t// flush last keyframe (compaction looks ahead)\n\n\t\tif ( lastIndex > 0 ) {\n\n\t\t\ttimes[ writeIndex ] = times[ lastIndex ];\n\n\t\t\tfor ( let readOffset = lastIndex * stride, writeOffset = writeIndex * stride, j = 0; j !== stride; ++ j ) {\n\n\t\t\t\tvalues[ writeOffset + j ] = values[ readOffset + j ];\n\n\t\t\t}\n\n\t\t\t++ writeIndex;\n\n\t\t}\n\n\t\tif ( writeIndex !== times.length ) {\n\n\t\t\tthis.times = AnimationUtils.arraySlice( times, 0, writeIndex );\n\t\t\tthis.values = AnimationUtils.arraySlice( values, 0, writeIndex * stride );\n\n\t\t} else {\n\n\t\t\tthis.times = times;\n\t\t\tthis.values = values;\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tclone: function () {\n\n\t\tconst times = AnimationUtils.arraySlice( this.times, 0 );\n\t\tconst values = AnimationUtils.arraySlice( this.values, 0 );\n\n\t\tconst TypedKeyframeTrack = this.constructor;\n\t\tconst track = new TypedKeyframeTrack( this.name, times, values );\n\n\t\t// Interpolant argument to constructor is not saved, so copy the factory method directly.\n\t\ttrack.createInterpolant = this.createInterpolant;\n\n\t\treturn track;\n\n\t}\n\n} );\n\n/**\n * A Track of Boolean keyframe values.\n */\n\nfunction BooleanKeyframeTrack( name, times, values ) {\n\n\tKeyframeTrack.call( this, name, times, values );\n\n}\n\nBooleanKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {\n\n\tconstructor: BooleanKeyframeTrack,\n\n\tValueTypeName: 'bool',\n\tValueBufferType: Array,\n\n\tDefaultInterpolation: InterpolateDiscrete,\n\n\tInterpolantFactoryMethodLinear: undefined,\n\tInterpolantFactoryMethodSmooth: undefined\n\n\t// Note: Actually this track could have a optimized / compressed\n\t// representation of a single value and a custom interpolant that\n\t// computes \"firstValue ^ isOdd( index )\".\n\n} );\n\n/**\n * A Track of keyframe values that represent color.\n */\n\nfunction ColorKeyframeTrack( name, times, values, interpolation ) {\n\n\tKeyframeTrack.call( this, name, times, values, interpolation );\n\n}\n\nColorKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {\n\n\tconstructor: ColorKeyframeTrack,\n\n\tValueTypeName: 'color'\n\n\t// ValueBufferType is inherited\n\n\t// DefaultInterpolation is inherited\n\n\t// Note: Very basic implementation and nothing special yet.\n\t// However, this is the place for color space parameterization.\n\n} );\n\n/**\n * A Track of numeric keyframe values.\n */\n\nfunction NumberKeyframeTrack( name, times, values, interpolation ) {\n\n\tKeyframeTrack.call( this, name, times, values, interpolation );\n\n}\n\nNumberKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {\n\n\tconstructor: NumberKeyframeTrack,\n\n\tValueTypeName: 'number'\n\n\t// ValueBufferType is inherited\n\n\t// DefaultInterpolation is inherited\n\n} );\n\n/**\n * Spherical linear unit quaternion interpolant.\n */\n\nfunction QuaternionLinearInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {\n\n\tInterpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );\n\n}\n\nQuaternionLinearInterpolant.prototype = Object.assign( Object.create( Interpolant.prototype ), {\n\n\tconstructor: QuaternionLinearInterpolant,\n\n\tinterpolate_: function ( i1, t0, t, t1 ) {\n\n\t\tconst result = this.resultBuffer,\n\t\t\tvalues = this.sampleValues,\n\t\t\tstride = this.valueSize,\n\n\t\t\talpha = ( t - t0 ) / ( t1 - t0 );\n\n\t\tlet offset = i1 * stride;\n\n\t\tfor ( let end = offset + stride; offset !== end; offset += 4 ) {\n\n\t\t\tQuaternion.slerpFlat( result, 0, values, offset - stride, values, offset, alpha );\n\n\t\t}\n\n\t\treturn result;\n\n\t}\n\n} );\n\n/**\n * A Track of quaternion keyframe values.\n */\n\nfunction QuaternionKeyframeTrack( name, times, values, interpolation ) {\n\n\tKeyframeTrack.call( this, name, times, values, interpolation );\n\n}\n\nQuaternionKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {\n\n\tconstructor: QuaternionKeyframeTrack,\n\n\tValueTypeName: 'quaternion',\n\n\t// ValueBufferType is inherited\n\n\tDefaultInterpolation: InterpolateLinear,\n\n\tInterpolantFactoryMethodLinear: function ( result ) {\n\n\t\treturn new QuaternionLinearInterpolant( this.times, this.values, this.getValueSize(), result );\n\n\t},\n\n\tInterpolantFactoryMethodSmooth: undefined // not yet implemented\n\n} );\n\n/**\n * A Track that interpolates Strings\n */\n\nfunction StringKeyframeTrack( name, times, values, interpolation ) {\n\n\tKeyframeTrack.call( this, name, times, values, interpolation );\n\n}\n\nStringKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {\n\n\tconstructor: StringKeyframeTrack,\n\n\tValueTypeName: 'string',\n\tValueBufferType: Array,\n\n\tDefaultInterpolation: InterpolateDiscrete,\n\n\tInterpolantFactoryMethodLinear: undefined,\n\n\tInterpolantFactoryMethodSmooth: undefined\n\n} );\n\n/**\n * A Track of vectored keyframe values.\n */\n\nfunction VectorKeyframeTrack( name, times, values, interpolation ) {\n\n\tKeyframeTrack.call( this, name, times, values, interpolation );\n\n}\n\nVectorKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {\n\n\tconstructor: VectorKeyframeTrack,\n\n\tValueTypeName: 'vector'\n\n\t// ValueBufferType is inherited\n\n\t// DefaultInterpolation is inherited\n\n} );\n\nfunction AnimationClip( name, duration = - 1, tracks, blendMode = NormalAnimationBlendMode ) {\n\n\tthis.name = name;\n\tthis.tracks = tracks;\n\tthis.duration = duration;\n\tthis.blendMode = blendMode;\n\n\tthis.uuid = MathUtils.generateUUID();\n\n\t// this means it should figure out its duration by scanning the tracks\n\tif ( this.duration < 0 ) {\n\n\t\tthis.resetDuration();\n\n\t}\n\n}\n\nfunction getTrackTypeForValueTypeName( typeName ) {\n\n\tswitch ( typeName.toLowerCase() ) {\n\n\t\tcase 'scalar':\n\t\tcase 'double':\n\t\tcase 'float':\n\t\tcase 'number':\n\t\tcase 'integer':\n\n\t\t\treturn NumberKeyframeTrack;\n\n\t\tcase 'vector':\n\t\tcase 'vector2':\n\t\tcase 'vector3':\n\t\tcase 'vector4':\n\n\t\t\treturn VectorKeyframeTrack;\n\n\t\tcase 'color':\n\n\t\t\treturn ColorKeyframeTrack;\n\n\t\tcase 'quaternion':\n\n\t\t\treturn QuaternionKeyframeTrack;\n\n\t\tcase 'bool':\n\t\tcase 'boolean':\n\n\t\t\treturn BooleanKeyframeTrack;\n\n\t\tcase 'string':\n\n\t\t\treturn StringKeyframeTrack;\n\n\t}\n\n\tthrow new Error( 'THREE.KeyframeTrack: Unsupported typeName: ' + typeName );\n\n}\n\nfunction parseKeyframeTrack( json ) {\n\n\tif ( json.type === undefined ) {\n\n\t\tthrow new Error( 'THREE.KeyframeTrack: track type undefined, can not parse' );\n\n\t}\n\n\tconst trackType = getTrackTypeForValueTypeName( json.type );\n\n\tif ( json.times === undefined ) {\n\n\t\tconst times = [], values = [];\n\n\t\tAnimationUtils.flattenJSON( json.keys, times, values, 'value' );\n\n\t\tjson.times = times;\n\t\tjson.values = values;\n\n\t}\n\n\t// derived classes can define a static parse method\n\tif ( trackType.parse !== undefined ) {\n\n\t\treturn trackType.parse( json );\n\n\t} else {\n\n\t\t// by default, we assume a constructor compatible with the base\n\t\treturn new trackType( json.name, json.times, json.values, json.interpolation );\n\n\t}\n\n}\n\nObject.assign( AnimationClip, {\n\n\tparse: function ( json ) {\n\n\t\tconst tracks = [],\n\t\t\tjsonTracks = json.tracks,\n\t\t\tframeTime = 1.0 / ( json.fps || 1.0 );\n\n\t\tfor ( let i = 0, n = jsonTracks.length; i !== n; ++ i ) {\n\n\t\t\ttracks.push( parseKeyframeTrack( jsonTracks[ i ] ).scale( frameTime ) );\n\n\t\t}\n\n\t\tconst clip = new AnimationClip( json.name, json.duration, tracks, json.blendMode );\n\t\tclip.uuid = json.uuid;\n\n\t\treturn clip;\n\n\t},\n\n\ttoJSON: function ( clip ) {\n\n\t\tconst tracks = [],\n\t\t\tclipTracks = clip.tracks;\n\n\t\tconst json = {\n\n\t\t\t'name': clip.name,\n\t\t\t'duration': clip.duration,\n\t\t\t'tracks': tracks,\n\t\t\t'uuid': clip.uuid,\n\t\t\t'blendMode': clip.blendMode\n\n\t\t};\n\n\t\tfor ( let i = 0, n = clipTracks.length; i !== n; ++ i ) {\n\n\t\t\ttracks.push( KeyframeTrack.toJSON( clipTracks[ i ] ) );\n\n\t\t}\n\n\t\treturn json;\n\n\t},\n\n\tCreateFromMorphTargetSequence: function ( name, morphTargetSequence, fps, noLoop ) {\n\n\t\tconst numMorphTargets = morphTargetSequence.length;\n\t\tconst tracks = [];\n\n\t\tfor ( let i = 0; i < numMorphTargets; i ++ ) {\n\n\t\t\tlet times = [];\n\t\t\tlet values = [];\n\n\t\t\ttimes.push(\n\t\t\t\t( i + numMorphTargets - 1 ) % numMorphTargets,\n\t\t\t\ti,\n\t\t\t\t( i + 1 ) % numMorphTargets );\n\n\t\t\tvalues.push( 0, 1, 0 );\n\n\t\t\tconst order = AnimationUtils.getKeyframeOrder( times );\n\t\t\ttimes = AnimationUtils.sortedArray( times, 1, order );\n\t\t\tvalues = AnimationUtils.sortedArray( values, 1, order );\n\n\t\t\t// if there is a key at the first frame, duplicate it as the\n\t\t\t// last frame as well for perfect loop.\n\t\t\tif ( ! noLoop && times[ 0 ] === 0 ) {\n\n\t\t\t\ttimes.push( numMorphTargets );\n\t\t\t\tvalues.push( values[ 0 ] );\n\n\t\t\t}\n\n\t\t\ttracks.push(\n\t\t\t\tnew NumberKeyframeTrack(\n\t\t\t\t\t'.morphTargetInfluences[' + morphTargetSequence[ i ].name + ']',\n\t\t\t\t\ttimes, values\n\t\t\t\t).scale( 1.0 / fps ) );\n\n\t\t}\n\n\t\treturn new AnimationClip( name, - 1, tracks );\n\n\t},\n\n\tfindByName: function ( objectOrClipArray, name ) {\n\n\t\tlet clipArray = objectOrClipArray;\n\n\t\tif ( ! Array.isArray( objectOrClipArray ) ) {\n\n\t\t\tconst o = objectOrClipArray;\n\t\t\tclipArray = o.geometry && o.geometry.animations || o.animations;\n\n\t\t}\n\n\t\tfor ( let i = 0; i < clipArray.length; i ++ ) {\n\n\t\t\tif ( clipArray[ i ].name === name ) {\n\n\t\t\t\treturn clipArray[ i ];\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn null;\n\n\t},\n\n\tCreateClipsFromMorphTargetSequences: function ( morphTargets, fps, noLoop ) {\n\n\t\tconst animationToMorphTargets = {};\n\n\t\t// tested with https://regex101.com/ on trick sequences\n\t\t// such flamingo_flyA_003, flamingo_run1_003, crdeath0059\n\t\tconst pattern = /^([\\w-]*?)([\\d]+)$/;\n\n\t\t// sort morph target names into animation groups based\n\t\t// patterns like Walk_001, Walk_002, Run_001, Run_002\n\t\tfor ( let i = 0, il = morphTargets.length; i < il; i ++ ) {\n\n\t\t\tconst morphTarget = morphTargets[ i ];\n\t\t\tconst parts = morphTarget.name.match( pattern );\n\n\t\t\tif ( parts && parts.length > 1 ) {\n\n\t\t\t\tconst name = parts[ 1 ];\n\n\t\t\t\tlet animationMorphTargets = animationToMorphTargets[ name ];\n\n\t\t\t\tif ( ! animationMorphTargets ) {\n\n\t\t\t\t\tanimationToMorphTargets[ name ] = animationMorphTargets = [];\n\n\t\t\t\t}\n\n\t\t\t\tanimationMorphTargets.push( morphTarget );\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst clips = [];\n\n\t\tfor ( const name in animationToMorphTargets ) {\n\n\t\t\tclips.push( AnimationClip.CreateFromMorphTargetSequence( name, animationToMorphTargets[ name ], fps, noLoop ) );\n\n\t\t}\n\n\t\treturn clips;\n\n\t},\n\n\t// parse the animation.hierarchy format\n\tparseAnimation: function ( animation, bones ) {\n\n\t\tif ( ! animation ) {\n\n\t\t\tconsole.error( 'THREE.AnimationClip: No animation in JSONLoader data.' );\n\t\t\treturn null;\n\n\t\t}\n\n\t\tconst addNonemptyTrack = function ( trackType, trackName, animationKeys, propertyName, destTracks ) {\n\n\t\t\t// only return track if there are actually keys.\n\t\t\tif ( animationKeys.length !== 0 ) {\n\n\t\t\t\tconst times = [];\n\t\t\t\tconst values = [];\n\n\t\t\t\tAnimationUtils.flattenJSON( animationKeys, times, values, propertyName );\n\n\t\t\t\t// empty keys are filtered out, so check again\n\t\t\t\tif ( times.length !== 0 ) {\n\n\t\t\t\t\tdestTracks.push( new trackType( trackName, times, values ) );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t};\n\n\t\tconst tracks = [];\n\n\t\tconst clipName = animation.name || 'default';\n\t\tconst fps = animation.fps || 30;\n\t\tconst blendMode = animation.blendMode;\n\n\t\t// automatic length determination in AnimationClip.\n\t\tlet duration = animation.length || - 1;\n\n\t\tconst hierarchyTracks = animation.hierarchy || [];\n\n\t\tfor ( let h = 0; h < hierarchyTracks.length; h ++ ) {\n\n\t\t\tconst animationKeys = hierarchyTracks[ h ].keys;\n\n\t\t\t// skip empty tracks\n\t\t\tif ( ! animationKeys || animationKeys.length === 0 ) continue;\n\n\t\t\t// process morph targets\n\t\t\tif ( animationKeys[ 0 ].morphTargets ) {\n\n\t\t\t\t// figure out all morph targets used in this track\n\t\t\t\tconst morphTargetNames = {};\n\n\t\t\t\tlet k;\n\n\t\t\t\tfor ( k = 0; k < animationKeys.length; k ++ ) {\n\n\t\t\t\t\tif ( animationKeys[ k ].morphTargets ) {\n\n\t\t\t\t\t\tfor ( let m = 0; m < animationKeys[ k ].morphTargets.length; m ++ ) {\n\n\t\t\t\t\t\t\tmorphTargetNames[ animationKeys[ k ].morphTargets[ m ] ] = - 1;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\t// create a track for each morph target with all zero\n\t\t\t\t// morphTargetInfluences except for the keys in which\n\t\t\t\t// the morphTarget is named.\n\t\t\t\tfor ( const morphTargetName in morphTargetNames ) {\n\n\t\t\t\t\tconst times = [];\n\t\t\t\t\tconst values = [];\n\n\t\t\t\t\tfor ( let m = 0; m !== animationKeys[ k ].morphTargets.length; ++ m ) {\n\n\t\t\t\t\t\tconst animationKey = animationKeys[ k ];\n\n\t\t\t\t\t\ttimes.push( animationKey.time );\n\t\t\t\t\t\tvalues.push( ( animationKey.morphTarget === morphTargetName ) ? 1 : 0 );\n\n\t\t\t\t\t}\n\n\t\t\t\t\ttracks.push( new NumberKeyframeTrack( '.morphTargetInfluence[' + morphTargetName + ']', times, values ) );\n\n\t\t\t\t}\n\n\t\t\t\tduration = morphTargetNames.length * ( fps || 1.0 );\n\n\t\t\t} else {\n\n\t\t\t\t// ...assume skeletal animation\n\n\t\t\t\tconst boneName = '.bones[' + bones[ h ].name + ']';\n\n\t\t\t\taddNonemptyTrack(\n\t\t\t\t\tVectorKeyframeTrack, boneName + '.position',\n\t\t\t\t\tanimationKeys, 'pos', tracks );\n\n\t\t\t\taddNonemptyTrack(\n\t\t\t\t\tQuaternionKeyframeTrack, boneName + '.quaternion',\n\t\t\t\t\tanimationKeys, 'rot', tracks );\n\n\t\t\t\taddNonemptyTrack(\n\t\t\t\t\tVectorKeyframeTrack, boneName + '.scale',\n\t\t\t\t\tanimationKeys, 'scl', tracks );\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( tracks.length === 0 ) {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\tconst clip = new AnimationClip( clipName, duration, tracks, blendMode );\n\n\t\treturn clip;\n\n\t}\n\n} );\n\nObject.assign( AnimationClip.prototype, {\n\n\tresetDuration: function () {\n\n\t\tconst tracks = this.tracks;\n\t\tlet duration = 0;\n\n\t\tfor ( let i = 0, n = tracks.length; i !== n; ++ i ) {\n\n\t\t\tconst track = this.tracks[ i ];\n\n\t\t\tduration = Math.max( duration, track.times[ track.times.length - 1 ] );\n\n\t\t}\n\n\t\tthis.duration = duration;\n\n\t\treturn this;\n\n\t},\n\n\ttrim: function () {\n\n\t\tfor ( let i = 0; i < this.tracks.length; i ++ ) {\n\n\t\t\tthis.tracks[ i ].trim( 0, this.duration );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tvalidate: function () {\n\n\t\tlet valid = true;\n\n\t\tfor ( let i = 0; i < this.tracks.length; i ++ ) {\n\n\t\t\tvalid = valid && this.tracks[ i ].validate();\n\n\t\t}\n\n\t\treturn valid;\n\n\t},\n\n\toptimize: function () {\n\n\t\tfor ( let i = 0; i < this.tracks.length; i ++ ) {\n\n\t\t\tthis.tracks[ i ].optimize();\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tclone: function () {\n\n\t\tconst tracks = [];\n\n\t\tfor ( let i = 0; i < this.tracks.length; i ++ ) {\n\n\t\t\ttracks.push( this.tracks[ i ].clone() );\n\n\t\t}\n\n\t\treturn new AnimationClip( this.name, this.duration, tracks, this.blendMode );\n\n\t},\n\n\ttoJSON: function () {\n\n\t\treturn AnimationClip.toJSON( this );\n\n\t}\n\n} );\n\nconst Cache = {\n\n\tenabled: false,\n\n\tfiles: {},\n\n\tadd: function ( key, file ) {\n\n\t\tif ( this.enabled === false ) return;\n\n\t\t// console.log( 'THREE.Cache', 'Adding key:', key );\n\n\t\tthis.files[ key ] = file;\n\n\t},\n\n\tget: function ( key ) {\n\n\t\tif ( this.enabled === false ) return;\n\n\t\t// console.log( 'THREE.Cache', 'Checking key:', key );\n\n\t\treturn this.files[ key ];\n\n\t},\n\n\tremove: function ( key ) {\n\n\t\tdelete this.files[ key ];\n\n\t},\n\n\tclear: function () {\n\n\t\tthis.files = {};\n\n\t}\n\n};\n\nfunction LoadingManager( onLoad, onProgress, onError ) {\n\n\tconst scope = this;\n\n\tlet isLoading = false;\n\tlet itemsLoaded = 0;\n\tlet itemsTotal = 0;\n\tlet urlModifier = undefined;\n\tconst handlers = [];\n\n\t// Refer to #5689 for the reason why we don't set .onStart\n\t// in the constructor\n\n\tthis.onStart = undefined;\n\tthis.onLoad = onLoad;\n\tthis.onProgress = onProgress;\n\tthis.onError = onError;\n\n\tthis.itemStart = function ( url ) {\n\n\t\titemsTotal ++;\n\n\t\tif ( isLoading === false ) {\n\n\t\t\tif ( scope.onStart !== undefined ) {\n\n\t\t\t\tscope.onStart( url, itemsLoaded, itemsTotal );\n\n\t\t\t}\n\n\t\t}\n\n\t\tisLoading = true;\n\n\t};\n\n\tthis.itemEnd = function ( url ) {\n\n\t\titemsLoaded ++;\n\n\t\tif ( scope.onProgress !== undefined ) {\n\n\t\t\tscope.onProgress( url, itemsLoaded, itemsTotal );\n\n\t\t}\n\n\t\tif ( itemsLoaded === itemsTotal ) {\n\n\t\t\tisLoading = false;\n\n\t\t\tif ( scope.onLoad !== undefined ) {\n\n\t\t\t\tscope.onLoad();\n\n\t\t\t}\n\n\t\t}\n\n\t};\n\n\tthis.itemError = function ( url ) {\n\n\t\tif ( scope.onError !== undefined ) {\n\n\t\t\tscope.onError( url );\n\n\t\t}\n\n\t};\n\n\tthis.resolveURL = function ( url ) {\n\n\t\tif ( urlModifier ) {\n\n\t\t\treturn urlModifier( url );\n\n\t\t}\n\n\t\treturn url;\n\n\t};\n\n\tthis.setURLModifier = function ( transform ) {\n\n\t\turlModifier = transform;\n\n\t\treturn this;\n\n\t};\n\n\tthis.addHandler = function ( regex, loader ) {\n\n\t\thandlers.push( regex, loader );\n\n\t\treturn this;\n\n\t};\n\n\tthis.removeHandler = function ( regex ) {\n\n\t\tconst index = handlers.indexOf( regex );\n\n\t\tif ( index !== - 1 ) {\n\n\t\t\thandlers.splice( index, 2 );\n\n\t\t}\n\n\t\treturn this;\n\n\t};\n\n\tthis.getHandler = function ( file ) {\n\n\t\tfor ( let i = 0, l = handlers.length; i < l; i += 2 ) {\n\n\t\t\tconst regex = handlers[ i ];\n\t\t\tconst loader = handlers[ i + 1 ];\n\n\t\t\tif ( regex.global ) regex.lastIndex = 0; // see #17920\n\n\t\t\tif ( regex.test( file ) ) {\n\n\t\t\t\treturn loader;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn null;\n\n\t};\n\n}\n\nconst DefaultLoadingManager = new LoadingManager();\n\nfunction Loader( manager ) {\n\n\tthis.manager = ( manager !== undefined ) ? manager : DefaultLoadingManager;\n\n\tthis.crossOrigin = 'anonymous';\n\tthis.withCredentials = false;\n\tthis.path = '';\n\tthis.resourcePath = '';\n\tthis.requestHeader = {};\n\n}\n\nObject.assign( Loader.prototype, {\n\n\tload: function ( /* url, onLoad, onProgress, onError */ ) {},\n\n\tloadAsync: function ( url, onProgress ) {\n\n\t\tconst scope = this;\n\n\t\treturn new Promise( function ( resolve, reject ) {\n\n\t\t\tscope.load( url, resolve, onProgress, reject );\n\n\t\t} );\n\n\t},\n\n\tparse: function ( /* data */ ) {},\n\n\tsetCrossOrigin: function ( crossOrigin ) {\n\n\t\tthis.crossOrigin = crossOrigin;\n\t\treturn this;\n\n\t},\n\n\tsetWithCredentials: function ( value ) {\n\n\t\tthis.withCredentials = value;\n\t\treturn this;\n\n\t},\n\n\tsetPath: function ( path ) {\n\n\t\tthis.path = path;\n\t\treturn this;\n\n\t},\n\n\tsetResourcePath: function ( resourcePath ) {\n\n\t\tthis.resourcePath = resourcePath;\n\t\treturn this;\n\n\t},\n\n\tsetRequestHeader: function ( requestHeader ) {\n\n\t\tthis.requestHeader = requestHeader;\n\t\treturn this;\n\n\t}\n\n} );\n\nconst loading = {};\n\nfunction FileLoader( manager ) {\n\n\tLoader.call( this, manager );\n\n}\n\nFileLoader.prototype = Object.assign( Object.create( Loader.prototype ), {\n\n\tconstructor: FileLoader,\n\n\tload: function ( url, onLoad, onProgress, onError ) {\n\n\t\tif ( url === undefined ) url = '';\n\n\t\tif ( this.path !== undefined ) url = this.path + url;\n\n\t\turl = this.manager.resolveURL( url );\n\n\t\tconst scope = this;\n\n\t\tconst cached = Cache.get( url );\n\n\t\tif ( cached !== undefined ) {\n\n\t\t\tscope.manager.itemStart( url );\n\n\t\t\tsetTimeout( function () {\n\n\t\t\t\tif ( onLoad ) onLoad( cached );\n\n\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t}, 0 );\n\n\t\t\treturn cached;\n\n\t\t}\n\n\t\t// Check if request is duplicate\n\n\t\tif ( loading[ url ] !== undefined ) {\n\n\t\t\tloading[ url ].push( {\n\n\t\t\t\tonLoad: onLoad,\n\t\t\t\tonProgress: onProgress,\n\t\t\t\tonError: onError\n\n\t\t\t} );\n\n\t\t\treturn;\n\n\t\t}\n\n\t\t// Check for data: URI\n\t\tconst dataUriRegex = /^data:(.*?)(;base64)?,(.*)$/;\n\t\tconst dataUriRegexResult = url.match( dataUriRegex );\n\t\tlet request;\n\n\t\t// Safari can not handle Data URIs through XMLHttpRequest so process manually\n\t\tif ( dataUriRegexResult ) {\n\n\t\t\tconst mimeType = dataUriRegexResult[ 1 ];\n\t\t\tconst isBase64 = !! dataUriRegexResult[ 2 ];\n\n\t\t\tlet data = dataUriRegexResult[ 3 ];\n\t\t\tdata = decodeURIComponent( data );\n\n\t\t\tif ( isBase64 ) data = atob( data );\n\n\t\t\ttry {\n\n\t\t\t\tlet response;\n\t\t\t\tconst responseType = ( this.responseType || '' ).toLowerCase();\n\n\t\t\t\tswitch ( responseType ) {\n\n\t\t\t\t\tcase 'arraybuffer':\n\t\t\t\t\tcase 'blob':\n\n\t\t\t\t\t\tconst view = new Uint8Array( data.length );\n\n\t\t\t\t\t\tfor ( let i = 0; i < data.length; i ++ ) {\n\n\t\t\t\t\t\t\tview[ i ] = data.charCodeAt( i );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tif ( responseType === 'blob' ) {\n\n\t\t\t\t\t\t\tresponse = new Blob( [ view.buffer ], { type: mimeType } );\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tresponse = view.buffer;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'document':\n\n\t\t\t\t\t\tconst parser = new DOMParser();\n\t\t\t\t\t\tresponse = parser.parseFromString( data, mimeType );\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'json':\n\n\t\t\t\t\t\tresponse = JSON.parse( data );\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tdefault: // 'text' or other\n\n\t\t\t\t\t\tresponse = data;\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t}\n\n\t\t\t\t// Wait for next browser tick like standard XMLHttpRequest event dispatching does\n\t\t\t\tsetTimeout( function () {\n\n\t\t\t\t\tif ( onLoad ) onLoad( response );\n\n\t\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t\t}, 0 );\n\n\t\t\t} catch ( error ) {\n\n\t\t\t\t// Wait for next browser tick like standard XMLHttpRequest event dispatching does\n\t\t\t\tsetTimeout( function () {\n\n\t\t\t\t\tif ( onError ) onError( error );\n\n\t\t\t\t\tscope.manager.itemError( url );\n\t\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t\t}, 0 );\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\t// Initialise array for duplicate requests\n\n\t\t\tloading[ url ] = [];\n\n\t\t\tloading[ url ].push( {\n\n\t\t\t\tonLoad: onLoad,\n\t\t\t\tonProgress: onProgress,\n\t\t\t\tonError: onError\n\n\t\t\t} );\n\n\t\t\trequest = new XMLHttpRequest();\n\n\t\t\trequest.open( 'GET', url, true );\n\n\t\t\trequest.addEventListener( 'load', function ( event ) {\n\n\t\t\t\tconst response = this.response;\n\n\t\t\t\tconst callbacks = loading[ url ];\n\n\t\t\t\tdelete loading[ url ];\n\n\t\t\t\tif ( this.status === 200 || this.status === 0 ) {\n\n\t\t\t\t\t// Some browsers return HTTP Status 0 when using non-http protocol\n\t\t\t\t\t// e.g. 'file://' or 'data://'. Handle as success.\n\n\t\t\t\t\tif ( this.status === 0 ) console.warn( 'THREE.FileLoader: HTTP Status 0 received.' );\n\n\t\t\t\t\t// Add to cache only on HTTP success, so that we do not cache\n\t\t\t\t\t// error response bodies as proper responses to requests.\n\t\t\t\t\tCache.add( url, response );\n\n\t\t\t\t\tfor ( let i = 0, il = callbacks.length; i < il; i ++ ) {\n\n\t\t\t\t\t\tconst callback = callbacks[ i ];\n\t\t\t\t\t\tif ( callback.onLoad ) callback.onLoad( response );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tfor ( let i = 0, il = callbacks.length; i < il; i ++ ) {\n\n\t\t\t\t\t\tconst callback = callbacks[ i ];\n\t\t\t\t\t\tif ( callback.onError ) callback.onError( event );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tscope.manager.itemError( url );\n\t\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t\t}\n\n\t\t\t}, false );\n\n\t\t\trequest.addEventListener( 'progress', function ( event ) {\n\n\t\t\t\tconst callbacks = loading[ url ];\n\n\t\t\t\tfor ( let i = 0, il = callbacks.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst callback = callbacks[ i ];\n\t\t\t\t\tif ( callback.onProgress ) callback.onProgress( event );\n\n\t\t\t\t}\n\n\t\t\t}, false );\n\n\t\t\trequest.addEventListener( 'error', function ( event ) {\n\n\t\t\t\tconst callbacks = loading[ url ];\n\n\t\t\t\tdelete loading[ url ];\n\n\t\t\t\tfor ( let i = 0, il = callbacks.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst callback = callbacks[ i ];\n\t\t\t\t\tif ( callback.onError ) callback.onError( event );\n\n\t\t\t\t}\n\n\t\t\t\tscope.manager.itemError( url );\n\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t}, false );\n\n\t\t\trequest.addEventListener( 'abort', function ( event ) {\n\n\t\t\t\tconst callbacks = loading[ url ];\n\n\t\t\t\tdelete loading[ url ];\n\n\t\t\t\tfor ( let i = 0, il = callbacks.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst callback = callbacks[ i ];\n\t\t\t\t\tif ( callback.onError ) callback.onError( event );\n\n\t\t\t\t}\n\n\t\t\t\tscope.manager.itemError( url );\n\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t}, false );\n\n\t\t\tif ( this.responseType !== undefined ) request.responseType = this.responseType;\n\t\t\tif ( this.withCredentials !== undefined ) request.withCredentials = this.withCredentials;\n\n\t\t\tif ( request.overrideMimeType ) request.overrideMimeType( this.mimeType !== undefined ? this.mimeType : 'text/plain' );\n\n\t\t\tfor ( const header in this.requestHeader ) {\n\n\t\t\t\trequest.setRequestHeader( header, this.requestHeader[ header ] );\n\n\t\t\t}\n\n\t\t\trequest.send( null );\n\n\t\t}\n\n\t\tscope.manager.itemStart( url );\n\n\t\treturn request;\n\n\t},\n\n\tsetResponseType: function ( value ) {\n\n\t\tthis.responseType = value;\n\t\treturn this;\n\n\t},\n\n\tsetMimeType: function ( value ) {\n\n\t\tthis.mimeType = value;\n\t\treturn this;\n\n\t}\n\n} );\n\nfunction AnimationLoader( manager ) {\n\n\tLoader.call( this, manager );\n\n}\n\nAnimationLoader.prototype = Object.assign( Object.create( Loader.prototype ), {\n\n\tconstructor: AnimationLoader,\n\n\tload: function ( url, onLoad, onProgress, onError ) {\n\n\t\tconst scope = this;\n\n\t\tconst loader = new FileLoader( scope.manager );\n\t\tloader.setPath( scope.path );\n\t\tloader.setRequestHeader( scope.requestHeader );\n\t\tloader.setWithCredentials( scope.withCredentials );\n\t\tloader.load( url, function ( text ) {\n\n\t\t\ttry {\n\n\t\t\t\tonLoad( scope.parse( JSON.parse( text ) ) );\n\n\t\t\t} catch ( e ) {\n\n\t\t\t\tif ( onError ) {\n\n\t\t\t\t\tonError( e );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.error( e );\n\n\t\t\t\t}\n\n\t\t\t\tscope.manager.itemError( url );\n\n\t\t\t}\n\n\t\t}, onProgress, onError );\n\n\t},\n\n\tparse: function ( json ) {\n\n\t\tconst animations = [];\n\n\t\tfor ( let i = 0; i < json.length; i ++ ) {\n\n\t\t\tconst clip = AnimationClip.parse( json[ i ] );\n\n\t\t\tanimations.push( clip );\n\n\t\t}\n\n\t\treturn animations;\n\n\t}\n\n} );\n\n/**\n * Abstract Base class to block based textures loader (dds, pvr, ...)\n *\n * Sub classes have to implement the parse() method which will be used in load().\n */\n\nfunction CompressedTextureLoader( manager ) {\n\n\tLoader.call( this, manager );\n\n}\n\nCompressedTextureLoader.prototype = Object.assign( Object.create( Loader.prototype ), {\n\n\tconstructor: CompressedTextureLoader,\n\n\tload: function ( url, onLoad, onProgress, onError ) {\n\n\t\tconst scope = this;\n\n\t\tconst images = [];\n\n\t\tconst texture = new CompressedTexture();\n\n\t\tconst loader = new FileLoader( this.manager );\n\t\tloader.setPath( this.path );\n\t\tloader.setResponseType( 'arraybuffer' );\n\t\tloader.setRequestHeader( this.requestHeader );\n\t\tloader.setWithCredentials( scope.withCredentials );\n\n\t\tlet loaded = 0;\n\n\t\tfunction loadTexture( i ) {\n\n\t\t\tloader.load( url[ i ], function ( buffer ) {\n\n\t\t\t\tconst texDatas = scope.parse( buffer, true );\n\n\t\t\t\timages[ i ] = {\n\t\t\t\t\twidth: texDatas.width,\n\t\t\t\t\theight: texDatas.height,\n\t\t\t\t\tformat: texDatas.format,\n\t\t\t\t\tmipmaps: texDatas.mipmaps\n\t\t\t\t};\n\n\t\t\t\tloaded += 1;\n\n\t\t\t\tif ( loaded === 6 ) {\n\n\t\t\t\t\tif ( texDatas.mipmapCount === 1 ) texture.minFilter = LinearFilter;\n\n\t\t\t\t\ttexture.image = images;\n\t\t\t\t\ttexture.format = texDatas.format;\n\t\t\t\t\ttexture.needsUpdate = true;\n\n\t\t\t\t\tif ( onLoad ) onLoad( texture );\n\n\t\t\t\t}\n\n\t\t\t}, onProgress, onError );\n\n\t\t}\n\n\t\tif ( Array.isArray( url ) ) {\n\n\t\t\tfor ( let i = 0, il = url.length; i < il; ++ i ) {\n\n\t\t\t\tloadTexture( i );\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\t// compressed cubemap texture stored in a single DDS file\n\n\t\t\tloader.load( url, function ( buffer ) {\n\n\t\t\t\tconst texDatas = scope.parse( buffer, true );\n\n\t\t\t\tif ( texDatas.isCubemap ) {\n\n\t\t\t\t\tconst faces = texDatas.mipmaps.length / texDatas.mipmapCount;\n\n\t\t\t\t\tfor ( let f = 0; f < faces; f ++ ) {\n\n\t\t\t\t\t\timages[ f ] = { mipmaps: [] };\n\n\t\t\t\t\t\tfor ( let i = 0; i < texDatas.mipmapCount; i ++ ) {\n\n\t\t\t\t\t\t\timages[ f ].mipmaps.push( texDatas.mipmaps[ f * texDatas.mipmapCount + i ] );\n\t\t\t\t\t\t\timages[ f ].format = texDatas.format;\n\t\t\t\t\t\t\timages[ f ].width = texDatas.width;\n\t\t\t\t\t\t\timages[ f ].height = texDatas.height;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\ttexture.image = images;\n\n\t\t\t\t} else {\n\n\t\t\t\t\ttexture.image.width = texDatas.width;\n\t\t\t\t\ttexture.image.height = texDatas.height;\n\t\t\t\t\ttexture.mipmaps = texDatas.mipmaps;\n\n\t\t\t\t}\n\n\t\t\t\tif ( texDatas.mipmapCount === 1 ) {\n\n\t\t\t\t\ttexture.minFilter = LinearFilter;\n\n\t\t\t\t}\n\n\t\t\t\ttexture.format = texDatas.format;\n\t\t\t\ttexture.needsUpdate = true;\n\n\t\t\t\tif ( onLoad ) onLoad( texture );\n\n\t\t\t}, onProgress, onError );\n\n\t\t}\n\n\t\treturn texture;\n\n\t}\n\n} );\n\nfunction ImageLoader( manager ) {\n\n\tLoader.call( this, manager );\n\n}\n\nImageLoader.prototype = Object.assign( Object.create( Loader.prototype ), {\n\n\tconstructor: ImageLoader,\n\n\tload: function ( url, onLoad, onProgress, onError ) {\n\n\t\tif ( this.path !== undefined ) url = this.path + url;\n\n\t\turl = this.manager.resolveURL( url );\n\n\t\tconst scope = this;\n\n\t\tconst cached = Cache.get( url );\n\n\t\tif ( cached !== undefined ) {\n\n\t\t\tscope.manager.itemStart( url );\n\n\t\t\tsetTimeout( function () {\n\n\t\t\t\tif ( onLoad ) onLoad( cached );\n\n\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t}, 0 );\n\n\t\t\treturn cached;\n\n\t\t}\n\n\t\tconst image = document.createElementNS( 'http://www.w3.org/1999/xhtml', 'img' );\n\n\t\tfunction onImageLoad() {\n\n\t\t\timage.removeEventListener( 'load', onImageLoad, false );\n\t\t\timage.removeEventListener( 'error', onImageError, false );\n\n\t\t\tCache.add( url, this );\n\n\t\t\tif ( onLoad ) onLoad( this );\n\n\t\t\tscope.manager.itemEnd( url );\n\n\t\t}\n\n\t\tfunction onImageError( event ) {\n\n\t\t\timage.removeEventListener( 'load', onImageLoad, false );\n\t\t\timage.removeEventListener( 'error', onImageError, false );\n\n\t\t\tif ( onError ) onError( event );\n\n\t\t\tscope.manager.itemError( url );\n\t\t\tscope.manager.itemEnd( url );\n\n\t\t}\n\n\t\timage.addEventListener( 'load', onImageLoad, false );\n\t\timage.addEventListener( 'error', onImageError, false );\n\n\t\tif ( url.substr( 0, 5 ) !== 'data:' ) {\n\n\t\t\tif ( this.crossOrigin !== undefined ) image.crossOrigin = this.crossOrigin;\n\n\t\t}\n\n\t\tscope.manager.itemStart( url );\n\n\t\timage.src = url;\n\n\t\treturn image;\n\n\t}\n\n} );\n\nfunction CubeTextureLoader( manager ) {\n\n\tLoader.call( this, manager );\n\n}\n\nCubeTextureLoader.prototype = Object.assign( Object.create( Loader.prototype ), {\n\n\tconstructor: CubeTextureLoader,\n\n\tload: function ( urls, onLoad, onProgress, onError ) {\n\n\t\tconst texture = new CubeTexture();\n\n\t\tconst loader = new ImageLoader( this.manager );\n\t\tloader.setCrossOrigin( this.crossOrigin );\n\t\tloader.setPath( this.path );\n\n\t\tlet loaded = 0;\n\n\t\tfunction loadTexture( i ) {\n\n\t\t\tloader.load( urls[ i ], function ( image ) {\n\n\t\t\t\ttexture.images[ i ] = image;\n\n\t\t\t\tloaded ++;\n\n\t\t\t\tif ( loaded === 6 ) {\n\n\t\t\t\t\ttexture.needsUpdate = true;\n\n\t\t\t\t\tif ( onLoad ) onLoad( texture );\n\n\t\t\t\t}\n\n\t\t\t}, undefined, onError );\n\n\t\t}\n\n\t\tfor ( let i = 0; i < urls.length; ++ i ) {\n\n\t\t\tloadTexture( i );\n\n\t\t}\n\n\t\treturn texture;\n\n\t}\n\n} );\n\n/**\n * Abstract Base class to load generic binary textures formats (rgbe, hdr, ...)\n *\n * Sub classes have to implement the parse() method which will be used in load().\n */\n\nfunction DataTextureLoader( manager ) {\n\n\tLoader.call( this, manager );\n\n}\n\nDataTextureLoader.prototype = Object.assign( Object.create( Loader.prototype ), {\n\n\tconstructor: DataTextureLoader,\n\n\tload: function ( url, onLoad, onProgress, onError ) {\n\n\t\tconst scope = this;\n\n\t\tconst texture = new DataTexture();\n\n\t\tconst loader = new FileLoader( this.manager );\n\t\tloader.setResponseType( 'arraybuffer' );\n\t\tloader.setRequestHeader( this.requestHeader );\n\t\tloader.setPath( this.path );\n\t\tloader.setWithCredentials( scope.withCredentials );\n\t\tloader.load( url, function ( buffer ) {\n\n\t\t\tconst texData = scope.parse( buffer );\n\n\t\t\tif ( ! texData ) return;\n\n\t\t\tif ( texData.image !== undefined ) {\n\n\t\t\t\ttexture.image = texData.image;\n\n\t\t\t} else if ( texData.data !== undefined ) {\n\n\t\t\t\ttexture.image.width = texData.width;\n\t\t\t\ttexture.image.height = texData.height;\n\t\t\t\ttexture.image.data = texData.data;\n\n\t\t\t}\n\n\t\t\ttexture.wrapS = texData.wrapS !== undefined ? texData.wrapS : ClampToEdgeWrapping;\n\t\t\ttexture.wrapT = texData.wrapT !== undefined ? texData.wrapT : ClampToEdgeWrapping;\n\n\t\t\ttexture.magFilter = texData.magFilter !== undefined ? texData.magFilter : LinearFilter;\n\t\t\ttexture.minFilter = texData.minFilter !== undefined ? texData.minFilter : LinearFilter;\n\n\t\t\ttexture.anisotropy = texData.anisotropy !== undefined ? texData.anisotropy : 1;\n\n\t\t\tif ( texData.format !== undefined ) {\n\n\t\t\t\ttexture.format = texData.format;\n\n\t\t\t}\n\n\t\t\tif ( texData.type !== undefined ) {\n\n\t\t\t\ttexture.type = texData.type;\n\n\t\t\t}\n\n\t\t\tif ( texData.mipmaps !== undefined ) {\n\n\t\t\t\ttexture.mipmaps = texData.mipmaps;\n\t\t\t\ttexture.minFilter = LinearMipmapLinearFilter; // presumably...\n\n\t\t\t}\n\n\t\t\tif ( texData.mipmapCount === 1 ) {\n\n\t\t\t\ttexture.minFilter = LinearFilter;\n\n\t\t\t}\n\n\t\t\ttexture.needsUpdate = true;\n\n\t\t\tif ( onLoad ) onLoad( texture, texData );\n\n\t\t}, onProgress, onError );\n\n\n\t\treturn texture;\n\n\t}\n\n} );\n\nfunction TextureLoader( manager ) {\n\n\tLoader.call( this, manager );\n\n}\n\nTextureLoader.prototype = Object.assign( Object.create( Loader.prototype ), {\n\n\tconstructor: TextureLoader,\n\n\tload: function ( url, onLoad, onProgress, onError ) {\n\n\t\tconst texture = new Texture();\n\n\t\tconst loader = new ImageLoader( this.manager );\n\t\tloader.setCrossOrigin( this.crossOrigin );\n\t\tloader.setPath( this.path );\n\n\t\tloader.load( url, function ( image ) {\n\n\t\t\ttexture.image = image;\n\n\t\t\t// JPEGs can't have an alpha channel, so memory can be saved by storing them as RGB.\n\t\t\tconst isJPEG = url.search( /\\.jpe?g($|\\?)/i ) > 0 || url.search( /^data\\:image\\/jpeg/ ) === 0;\n\n\t\t\ttexture.format = isJPEG ? RGBFormat : RGBAFormat;\n\t\t\ttexture.needsUpdate = true;\n\n\t\t\tif ( onLoad !== undefined ) {\n\n\t\t\t\tonLoad( texture );\n\n\t\t\t}\n\n\t\t}, onProgress, onError );\n\n\t\treturn texture;\n\n\t}\n\n} );\n\n/**\n * Extensible curve object.\n *\n * Some common of curve methods:\n * .getPoint( t, optionalTarget ), .getTangent( t, optionalTarget )\n * .getPointAt( u, optionalTarget ), .getTangentAt( u, optionalTarget )\n * .getPoints(), .getSpacedPoints()\n * .getLength()\n * .updateArcLengths()\n *\n * This following curves inherit from THREE.Curve:\n *\n * -- 2D curves --\n * THREE.ArcCurve\n * THREE.CubicBezierCurve\n * THREE.EllipseCurve\n * THREE.LineCurve\n * THREE.QuadraticBezierCurve\n * THREE.SplineCurve\n *\n * -- 3D curves --\n * THREE.CatmullRomCurve3\n * THREE.CubicBezierCurve3\n * THREE.LineCurve3\n * THREE.QuadraticBezierCurve3\n *\n * A series of curves can be represented as a THREE.CurvePath.\n *\n **/\n\nfunction Curve() {\n\n\tthis.type = 'Curve';\n\n\tthis.arcLengthDivisions = 200;\n\n}\n\nObject.assign( Curve.prototype, {\n\n\t// Virtual base class method to overwrite and implement in subclasses\n\t//\t- t [0 .. 1]\n\n\tgetPoint: function ( /* t, optionalTarget */ ) {\n\n\t\tconsole.warn( 'THREE.Curve: .getPoint() not implemented.' );\n\t\treturn null;\n\n\t},\n\n\t// Get point at relative position in curve according to arc length\n\t// - u [0 .. 1]\n\n\tgetPointAt: function ( u, optionalTarget ) {\n\n\t\tconst t = this.getUtoTmapping( u );\n\t\treturn this.getPoint( t, optionalTarget );\n\n\t},\n\n\t// Get sequence of points using getPoint( t )\n\n\tgetPoints: function ( divisions = 5 ) {\n\n\t\tconst points = [];\n\n\t\tfor ( let d = 0; d <= divisions; d ++ ) {\n\n\t\t\tpoints.push( this.getPoint( d / divisions ) );\n\n\t\t}\n\n\t\treturn points;\n\n\t},\n\n\t// Get sequence of points using getPointAt( u )\n\n\tgetSpacedPoints: function ( divisions = 5 ) {\n\n\t\tconst points = [];\n\n\t\tfor ( let d = 0; d <= divisions; d ++ ) {\n\n\t\t\tpoints.push( this.getPointAt( d / divisions ) );\n\n\t\t}\n\n\t\treturn points;\n\n\t},\n\n\t// Get total curve arc length\n\n\tgetLength: function () {\n\n\t\tconst lengths = this.getLengths();\n\t\treturn lengths[ lengths.length - 1 ];\n\n\t},\n\n\t// Get list of cumulative segment lengths\n\n\tgetLengths: function ( divisions ) {\n\n\t\tif ( divisions === undefined ) divisions = this.arcLengthDivisions;\n\n\t\tif ( this.cacheArcLengths &&\n\t\t\t( this.cacheArcLengths.length === divisions + 1 ) &&\n\t\t\t! this.needsUpdate ) {\n\n\t\t\treturn this.cacheArcLengths;\n\n\t\t}\n\n\t\tthis.needsUpdate = false;\n\n\t\tconst cache = [];\n\t\tlet current, last = this.getPoint( 0 );\n\t\tlet sum = 0;\n\n\t\tcache.push( 0 );\n\n\t\tfor ( let p = 1; p <= divisions; p ++ ) {\n\n\t\t\tcurrent = this.getPoint( p / divisions );\n\t\t\tsum += current.distanceTo( last );\n\t\t\tcache.push( sum );\n\t\t\tlast = current;\n\n\t\t}\n\n\t\tthis.cacheArcLengths = cache;\n\n\t\treturn cache; // { sums: cache, sum: sum }; Sum is in the last element.\n\n\t},\n\n\tupdateArcLengths: function () {\n\n\t\tthis.needsUpdate = true;\n\t\tthis.getLengths();\n\n\t},\n\n\t// Given u ( 0 .. 1 ), get a t to find p. This gives you points which are equidistant\n\n\tgetUtoTmapping: function ( u, distance ) {\n\n\t\tconst arcLengths = this.getLengths();\n\n\t\tlet i = 0;\n\t\tconst il = arcLengths.length;\n\n\t\tlet targetArcLength; // The targeted u distance value to get\n\n\t\tif ( distance ) {\n\n\t\t\ttargetArcLength = distance;\n\n\t\t} else {\n\n\t\t\ttargetArcLength = u * arcLengths[ il - 1 ];\n\n\t\t}\n\n\t\t// binary search for the index with largest value smaller than target u distance\n\n\t\tlet low = 0, high = il - 1, comparison;\n\n\t\twhile ( low <= high ) {\n\n\t\t\ti = Math.floor( low + ( high - low ) / 2 ); // less likely to overflow, though probably not issue here, JS doesn't really have integers, all numbers are floats\n\n\t\t\tcomparison = arcLengths[ i ] - targetArcLength;\n\n\t\t\tif ( comparison < 0 ) {\n\n\t\t\t\tlow = i + 1;\n\n\t\t\t} else if ( comparison > 0 ) {\n\n\t\t\t\thigh = i - 1;\n\n\t\t\t} else {\n\n\t\t\t\thigh = i;\n\t\t\t\tbreak;\n\n\t\t\t\t// DONE\n\n\t\t\t}\n\n\t\t}\n\n\t\ti = high;\n\n\t\tif ( arcLengths[ i ] === targetArcLength ) {\n\n\t\t\treturn i / ( il - 1 );\n\n\t\t}\n\n\t\t// we could get finer grain at lengths, or use simple interpolation between two points\n\n\t\tconst lengthBefore = arcLengths[ i ];\n\t\tconst lengthAfter = arcLengths[ i + 1 ];\n\n\t\tconst segmentLength = lengthAfter - lengthBefore;\n\n\t\t// determine where we are between the 'before' and 'after' points\n\n\t\tconst segmentFraction = ( targetArcLength - lengthBefore ) / segmentLength;\n\n\t\t// add that fractional amount to t\n\n\t\tconst t = ( i + segmentFraction ) / ( il - 1 );\n\n\t\treturn t;\n\n\t},\n\n\t// Returns a unit vector tangent at t\n\t// In case any sub curve does not implement its tangent derivation,\n\t// 2 points a small delta apart will be used to find its gradient\n\t// which seems to give a reasonable approximation\n\n\tgetTangent: function ( t, optionalTarget ) {\n\n\t\tconst delta = 0.0001;\n\t\tlet t1 = t - delta;\n\t\tlet t2 = t + delta;\n\n\t\t// Capping in case of danger\n\n\t\tif ( t1 < 0 ) t1 = 0;\n\t\tif ( t2 > 1 ) t2 = 1;\n\n\t\tconst pt1 = this.getPoint( t1 );\n\t\tconst pt2 = this.getPoint( t2 );\n\n\t\tconst tangent = optionalTarget || ( ( pt1.isVector2 ) ? new Vector2() : new Vector3() );\n\n\t\ttangent.copy( pt2 ).sub( pt1 ).normalize();\n\n\t\treturn tangent;\n\n\t},\n\n\tgetTangentAt: function ( u, optionalTarget ) {\n\n\t\tconst t = this.getUtoTmapping( u );\n\t\treturn this.getTangent( t, optionalTarget );\n\n\t},\n\n\tcomputeFrenetFrames: function ( segments, closed ) {\n\n\t\t// see http://www.cs.indiana.edu/pub/techreports/TR425.pdf\n\n\t\tconst normal = new Vector3();\n\n\t\tconst tangents = [];\n\t\tconst normals = [];\n\t\tconst binormals = [];\n\n\t\tconst vec = new Vector3();\n\t\tconst mat = new Matrix4();\n\n\t\t// compute the tangent vectors for each segment on the curve\n\n\t\tfor ( let i = 0; i <= segments; i ++ ) {\n\n\t\t\tconst u = i / segments;\n\n\t\t\ttangents[ i ] = this.getTangentAt( u, new Vector3() );\n\t\t\ttangents[ i ].normalize();\n\n\t\t}\n\n\t\t// select an initial normal vector perpendicular to the first tangent vector,\n\t\t// and in the direction of the minimum tangent xyz component\n\n\t\tnormals[ 0 ] = new Vector3();\n\t\tbinormals[ 0 ] = new Vector3();\n\t\tlet min = Number.MAX_VALUE;\n\t\tconst tx = Math.abs( tangents[ 0 ].x );\n\t\tconst ty = Math.abs( tangents[ 0 ].y );\n\t\tconst tz = Math.abs( tangents[ 0 ].z );\n\n\t\tif ( tx <= min ) {\n\n\t\t\tmin = tx;\n\t\t\tnormal.set( 1, 0, 0 );\n\n\t\t}\n\n\t\tif ( ty <= min ) {\n\n\t\t\tmin = ty;\n\t\t\tnormal.set( 0, 1, 0 );\n\n\t\t}\n\n\t\tif ( tz <= min ) {\n\n\t\t\tnormal.set( 0, 0, 1 );\n\n\t\t}\n\n\t\tvec.crossVectors( tangents[ 0 ], normal ).normalize();\n\n\t\tnormals[ 0 ].crossVectors( tangents[ 0 ], vec );\n\t\tbinormals[ 0 ].crossVectors( tangents[ 0 ], normals[ 0 ] );\n\n\n\t\t// compute the slowly-varying normal and binormal vectors for each segment on the curve\n\n\t\tfor ( let i = 1; i <= segments; i ++ ) {\n\n\t\t\tnormals[ i ] = normals[ i - 1 ].clone();\n\n\t\t\tbinormals[ i ] = binormals[ i - 1 ].clone();\n\n\t\t\tvec.crossVectors( tangents[ i - 1 ], tangents[ i ] );\n\n\t\t\tif ( vec.length() > Number.EPSILON ) {\n\n\t\t\t\tvec.normalize();\n\n\t\t\t\tconst theta = Math.acos( MathUtils.clamp( tangents[ i - 1 ].dot( tangents[ i ] ), - 1, 1 ) ); // clamp for floating pt errors\n\n\t\t\t\tnormals[ i ].applyMatrix4( mat.makeRotationAxis( vec, theta ) );\n\n\t\t\t}\n\n\t\t\tbinormals[ i ].crossVectors( tangents[ i ], normals[ i ] );\n\n\t\t}\n\n\t\t// if the curve is closed, postprocess the vectors so the first and last normal vectors are the same\n\n\t\tif ( closed === true ) {\n\n\t\t\tlet theta = Math.acos( MathUtils.clamp( normals[ 0 ].dot( normals[ segments ] ), - 1, 1 ) );\n\t\t\ttheta /= segments;\n\n\t\t\tif ( tangents[ 0 ].dot( vec.crossVectors( normals[ 0 ], normals[ segments ] ) ) > 0 ) {\n\n\t\t\t\ttheta = - theta;\n\n\t\t\t}\n\n\t\t\tfor ( let i = 1; i <= segments; i ++ ) {\n\n\t\t\t\t// twist a little...\n\t\t\t\tnormals[ i ].applyMatrix4( mat.makeRotationAxis( tangents[ i ], theta * i ) );\n\t\t\t\tbinormals[ i ].crossVectors( tangents[ i ], normals[ i ] );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn {\n\t\t\ttangents: tangents,\n\t\t\tnormals: normals,\n\t\t\tbinormals: binormals\n\t\t};\n\n\t},\n\n\tclone: function () {\n\n\t\treturn new this.constructor().copy( this );\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\tthis.arcLengthDivisions = source.arcLengthDivisions;\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function () {\n\n\t\tconst data = {\n\t\t\tmetadata: {\n\t\t\t\tversion: 4.5,\n\t\t\t\ttype: 'Curve',\n\t\t\t\tgenerator: 'Curve.toJSON'\n\t\t\t}\n\t\t};\n\n\t\tdata.arcLengthDivisions = this.arcLengthDivisions;\n\t\tdata.type = this.type;\n\n\t\treturn data;\n\n\t},\n\n\tfromJSON: function ( json ) {\n\n\t\tthis.arcLengthDivisions = json.arcLengthDivisions;\n\n\t\treturn this;\n\n\t}\n\n} );\n\nfunction EllipseCurve( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {\n\n\tCurve.call( this );\n\n\tthis.type = 'EllipseCurve';\n\n\tthis.aX = aX || 0;\n\tthis.aY = aY || 0;\n\n\tthis.xRadius = xRadius || 1;\n\tthis.yRadius = yRadius || 1;\n\n\tthis.aStartAngle = aStartAngle || 0;\n\tthis.aEndAngle = aEndAngle || 2 * Math.PI;\n\n\tthis.aClockwise = aClockwise || false;\n\n\tthis.aRotation = aRotation || 0;\n\n}\n\nEllipseCurve.prototype = Object.create( Curve.prototype );\nEllipseCurve.prototype.constructor = EllipseCurve;\n\nEllipseCurve.prototype.isEllipseCurve = true;\n\nEllipseCurve.prototype.getPoint = function ( t, optionalTarget ) {\n\n\tconst point = optionalTarget || new Vector2();\n\n\tconst twoPi = Math.PI * 2;\n\tlet deltaAngle = this.aEndAngle - this.aStartAngle;\n\tconst samePoints = Math.abs( deltaAngle ) < Number.EPSILON;\n\n\t// ensures that deltaAngle is 0 .. 2 PI\n\twhile ( deltaAngle < 0 ) deltaAngle += twoPi;\n\twhile ( deltaAngle > twoPi ) deltaAngle -= twoPi;\n\n\tif ( deltaAngle < Number.EPSILON ) {\n\n\t\tif ( samePoints ) {\n\n\t\t\tdeltaAngle = 0;\n\n\t\t} else {\n\n\t\t\tdeltaAngle = twoPi;\n\n\t\t}\n\n\t}\n\n\tif ( this.aClockwise === true && ! samePoints ) {\n\n\t\tif ( deltaAngle === twoPi ) {\n\n\t\t\tdeltaAngle = - twoPi;\n\n\t\t} else {\n\n\t\t\tdeltaAngle = deltaAngle - twoPi;\n\n\t\t}\n\n\t}\n\n\tconst angle = this.aStartAngle + t * deltaAngle;\n\tlet x = this.aX + this.xRadius * Math.cos( angle );\n\tlet y = this.aY + this.yRadius * Math.sin( angle );\n\n\tif ( this.aRotation !== 0 ) {\n\n\t\tconst cos = Math.cos( this.aRotation );\n\t\tconst sin = Math.sin( this.aRotation );\n\n\t\tconst tx = x - this.aX;\n\t\tconst ty = y - this.aY;\n\n\t\t// Rotate the point about the center of the ellipse.\n\t\tx = tx * cos - ty * sin + this.aX;\n\t\ty = tx * sin + ty * cos + this.aY;\n\n\t}\n\n\treturn point.set( x, y );\n\n};\n\nEllipseCurve.prototype.copy = function ( source ) {\n\n\tCurve.prototype.copy.call( this, source );\n\n\tthis.aX = source.aX;\n\tthis.aY = source.aY;\n\n\tthis.xRadius = source.xRadius;\n\tthis.yRadius = source.yRadius;\n\n\tthis.aStartAngle = source.aStartAngle;\n\tthis.aEndAngle = source.aEndAngle;\n\n\tthis.aClockwise = source.aClockwise;\n\n\tthis.aRotation = source.aRotation;\n\n\treturn this;\n\n};\n\n\nEllipseCurve.prototype.toJSON = function () {\n\n\tconst data = Curve.prototype.toJSON.call( this );\n\n\tdata.aX = this.aX;\n\tdata.aY = this.aY;\n\n\tdata.xRadius = this.xRadius;\n\tdata.yRadius = this.yRadius;\n\n\tdata.aStartAngle = this.aStartAngle;\n\tdata.aEndAngle = this.aEndAngle;\n\n\tdata.aClockwise = this.aClockwise;\n\n\tdata.aRotation = this.aRotation;\n\n\treturn data;\n\n};\n\nEllipseCurve.prototype.fromJSON = function ( json ) {\n\n\tCurve.prototype.fromJSON.call( this, json );\n\n\tthis.aX = json.aX;\n\tthis.aY = json.aY;\n\n\tthis.xRadius = json.xRadius;\n\tthis.yRadius = json.yRadius;\n\n\tthis.aStartAngle = json.aStartAngle;\n\tthis.aEndAngle = json.aEndAngle;\n\n\tthis.aClockwise = json.aClockwise;\n\n\tthis.aRotation = json.aRotation;\n\n\treturn this;\n\n};\n\nfunction ArcCurve( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {\n\n\tEllipseCurve.call( this, aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise );\n\n\tthis.type = 'ArcCurve';\n\n}\n\nArcCurve.prototype = Object.create( EllipseCurve.prototype );\nArcCurve.prototype.constructor = ArcCurve;\n\nArcCurve.prototype.isArcCurve = true;\n\n/**\n * Centripetal CatmullRom Curve - which is useful for avoiding\n * cusps and self-intersections in non-uniform catmull rom curves.\n * http://www.cemyuksel.com/research/catmullrom_param/catmullrom.pdf\n *\n * curve.type accepts centripetal(default), chordal and catmullrom\n * curve.tension is used for catmullrom which defaults to 0.5\n */\n\n\n/*\nBased on an optimized c++ solution in\n - http://stackoverflow.com/questions/9489736/catmull-rom-curve-with-no-cusps-and-no-self-intersections/\n - http://ideone.com/NoEbVM\n\nThis CubicPoly class could be used for reusing some variables and calculations,\nbut for three.js curve use, it could be possible inlined and flatten into a single function call\nwhich can be placed in CurveUtils.\n*/\n\nfunction CubicPoly() {\n\n\tlet c0 = 0, c1 = 0, c2 = 0, c3 = 0;\n\n\t/*\n\t * Compute coefficients for a cubic polynomial\n\t *   p(s) = c0 + c1*s + c2*s^2 + c3*s^3\n\t * such that\n\t *   p(0) = x0, p(1) = x1\n\t *  and\n\t *   p'(0) = t0, p'(1) = t1.\n\t */\n\tfunction init( x0, x1, t0, t1 ) {\n\n\t\tc0 = x0;\n\t\tc1 = t0;\n\t\tc2 = - 3 * x0 + 3 * x1 - 2 * t0 - t1;\n\t\tc3 = 2 * x0 - 2 * x1 + t0 + t1;\n\n\t}\n\n\treturn {\n\n\t\tinitCatmullRom: function ( x0, x1, x2, x3, tension ) {\n\n\t\t\tinit( x1, x2, tension * ( x2 - x0 ), tension * ( x3 - x1 ) );\n\n\t\t},\n\n\t\tinitNonuniformCatmullRom: function ( x0, x1, x2, x3, dt0, dt1, dt2 ) {\n\n\t\t\t// compute tangents when parameterized in [t1,t2]\n\t\t\tlet t1 = ( x1 - x0 ) / dt0 - ( x2 - x0 ) / ( dt0 + dt1 ) + ( x2 - x1 ) / dt1;\n\t\t\tlet t2 = ( x2 - x1 ) / dt1 - ( x3 - x1 ) / ( dt1 + dt2 ) + ( x3 - x2 ) / dt2;\n\n\t\t\t// rescale tangents for parametrization in [0,1]\n\t\t\tt1 *= dt1;\n\t\t\tt2 *= dt1;\n\n\t\t\tinit( x1, x2, t1, t2 );\n\n\t\t},\n\n\t\tcalc: function ( t ) {\n\n\t\t\tconst t2 = t * t;\n\t\t\tconst t3 = t2 * t;\n\t\t\treturn c0 + c1 * t + c2 * t2 + c3 * t3;\n\n\t\t}\n\n\t};\n\n}\n\n//\n\nconst tmp = new Vector3();\nconst px = new CubicPoly(), py = new CubicPoly(), pz = new CubicPoly();\n\nfunction CatmullRomCurve3( points = [], closed = false, curveType = 'centripetal', tension = 0.5 ) {\n\n\tCurve.call( this );\n\n\tthis.type = 'CatmullRomCurve3';\n\n\tthis.points = points;\n\tthis.closed = closed;\n\tthis.curveType = curveType;\n\tthis.tension = tension;\n\n}\n\nCatmullRomCurve3.prototype = Object.create( Curve.prototype );\nCatmullRomCurve3.prototype.constructor = CatmullRomCurve3;\n\nCatmullRomCurve3.prototype.isCatmullRomCurve3 = true;\n\nCatmullRomCurve3.prototype.getPoint = function ( t, optionalTarget = new Vector3() ) {\n\n\tconst point = optionalTarget;\n\n\tconst points = this.points;\n\tconst l = points.length;\n\n\tconst p = ( l - ( this.closed ? 0 : 1 ) ) * t;\n\tlet intPoint = Math.floor( p );\n\tlet weight = p - intPoint;\n\n\tif ( this.closed ) {\n\n\t\tintPoint += intPoint > 0 ? 0 : ( Math.floor( Math.abs( intPoint ) / l ) + 1 ) * l;\n\n\t} else if ( weight === 0 && intPoint === l - 1 ) {\n\n\t\tintPoint = l - 2;\n\t\tweight = 1;\n\n\t}\n\n\tlet p0, p3; // 4 points (p1 & p2 defined below)\n\n\tif ( this.closed || intPoint > 0 ) {\n\n\t\tp0 = points[ ( intPoint - 1 ) % l ];\n\n\t} else {\n\n\t\t// extrapolate first point\n\t\ttmp.subVectors( points[ 0 ], points[ 1 ] ).add( points[ 0 ] );\n\t\tp0 = tmp;\n\n\t}\n\n\tconst p1 = points[ intPoint % l ];\n\tconst p2 = points[ ( intPoint + 1 ) % l ];\n\n\tif ( this.closed || intPoint + 2 < l ) {\n\n\t\tp3 = points[ ( intPoint + 2 ) % l ];\n\n\t} else {\n\n\t\t// extrapolate last point\n\t\ttmp.subVectors( points[ l - 1 ], points[ l - 2 ] ).add( points[ l - 1 ] );\n\t\tp3 = tmp;\n\n\t}\n\n\tif ( this.curveType === 'centripetal' || this.curveType === 'chordal' ) {\n\n\t\t// init Centripetal / Chordal Catmull-Rom\n\t\tconst pow = this.curveType === 'chordal' ? 0.5 : 0.25;\n\t\tlet dt0 = Math.pow( p0.distanceToSquared( p1 ), pow );\n\t\tlet dt1 = Math.pow( p1.distanceToSquared( p2 ), pow );\n\t\tlet dt2 = Math.pow( p2.distanceToSquared( p3 ), pow );\n\n\t\t// safety check for repeated points\n\t\tif ( dt1 < 1e-4 ) dt1 = 1.0;\n\t\tif ( dt0 < 1e-4 ) dt0 = dt1;\n\t\tif ( dt2 < 1e-4 ) dt2 = dt1;\n\n\t\tpx.initNonuniformCatmullRom( p0.x, p1.x, p2.x, p3.x, dt0, dt1, dt2 );\n\t\tpy.initNonuniformCatmullRom( p0.y, p1.y, p2.y, p3.y, dt0, dt1, dt2 );\n\t\tpz.initNonuniformCatmullRom( p0.z, p1.z, p2.z, p3.z, dt0, dt1, dt2 );\n\n\t} else if ( this.curveType === 'catmullrom' ) {\n\n\t\tpx.initCatmullRom( p0.x, p1.x, p2.x, p3.x, this.tension );\n\t\tpy.initCatmullRom( p0.y, p1.y, p2.y, p3.y, this.tension );\n\t\tpz.initCatmullRom( p0.z, p1.z, p2.z, p3.z, this.tension );\n\n\t}\n\n\tpoint.set(\n\t\tpx.calc( weight ),\n\t\tpy.calc( weight ),\n\t\tpz.calc( weight )\n\t);\n\n\treturn point;\n\n};\n\nCatmullRomCurve3.prototype.copy = function ( source ) {\n\n\tCurve.prototype.copy.call( this, source );\n\n\tthis.points = [];\n\n\tfor ( let i = 0, l = source.points.length; i < l; i ++ ) {\n\n\t\tconst point = source.points[ i ];\n\n\t\tthis.points.push( point.clone() );\n\n\t}\n\n\tthis.closed = source.closed;\n\tthis.curveType = source.curveType;\n\tthis.tension = source.tension;\n\n\treturn this;\n\n};\n\nCatmullRomCurve3.prototype.toJSON = function () {\n\n\tconst data = Curve.prototype.toJSON.call( this );\n\n\tdata.points = [];\n\n\tfor ( let i = 0, l = this.points.length; i < l; i ++ ) {\n\n\t\tconst point = this.points[ i ];\n\t\tdata.points.push( point.toArray() );\n\n\t}\n\n\tdata.closed = this.closed;\n\tdata.curveType = this.curveType;\n\tdata.tension = this.tension;\n\n\treturn data;\n\n};\n\nCatmullRomCurve3.prototype.fromJSON = function ( json ) {\n\n\tCurve.prototype.fromJSON.call( this, json );\n\n\tthis.points = [];\n\n\tfor ( let i = 0, l = json.points.length; i < l; i ++ ) {\n\n\t\tconst point = json.points[ i ];\n\t\tthis.points.push( new Vector3().fromArray( point ) );\n\n\t}\n\n\tthis.closed = json.closed;\n\tthis.curveType = json.curveType;\n\tthis.tension = json.tension;\n\n\treturn this;\n\n};\n\n/**\n * Bezier Curves formulas obtained from\n * http://en.wikipedia.org/wiki/Bézier_curve\n */\n\nfunction CatmullRom( t, p0, p1, p2, p3 ) {\n\n\tconst v0 = ( p2 - p0 ) * 0.5;\n\tconst v1 = ( p3 - p1 ) * 0.5;\n\tconst t2 = t * t;\n\tconst t3 = t * t2;\n\treturn ( 2 * p1 - 2 * p2 + v0 + v1 ) * t3 + ( - 3 * p1 + 3 * p2 - 2 * v0 - v1 ) * t2 + v0 * t + p1;\n\n}\n\n//\n\nfunction QuadraticBezierP0( t, p ) {\n\n\tconst k = 1 - t;\n\treturn k * k * p;\n\n}\n\nfunction QuadraticBezierP1( t, p ) {\n\n\treturn 2 * ( 1 - t ) * t * p;\n\n}\n\nfunction QuadraticBezierP2( t, p ) {\n\n\treturn t * t * p;\n\n}\n\nfunction QuadraticBezier( t, p0, p1, p2 ) {\n\n\treturn QuadraticBezierP0( t, p0 ) + QuadraticBezierP1( t, p1 ) +\n\t\tQuadraticBezierP2( t, p2 );\n\n}\n\n//\n\nfunction CubicBezierP0( t, p ) {\n\n\tconst k = 1 - t;\n\treturn k * k * k * p;\n\n}\n\nfunction CubicBezierP1( t, p ) {\n\n\tconst k = 1 - t;\n\treturn 3 * k * k * t * p;\n\n}\n\nfunction CubicBezierP2( t, p ) {\n\n\treturn 3 * ( 1 - t ) * t * t * p;\n\n}\n\nfunction CubicBezierP3( t, p ) {\n\n\treturn t * t * t * p;\n\n}\n\nfunction CubicBezier( t, p0, p1, p2, p3 ) {\n\n\treturn CubicBezierP0( t, p0 ) + CubicBezierP1( t, p1 ) + CubicBezierP2( t, p2 ) +\n\t\tCubicBezierP3( t, p3 );\n\n}\n\nfunction CubicBezierCurve( v0 = new Vector2(), v1 = new Vector2(), v2 = new Vector2(), v3 = new Vector2() ) {\n\n\tCurve.call( this );\n\n\tthis.type = 'CubicBezierCurve';\n\n\tthis.v0 = v0;\n\tthis.v1 = v1;\n\tthis.v2 = v2;\n\tthis.v3 = v3;\n\n}\n\nCubicBezierCurve.prototype = Object.create( Curve.prototype );\nCubicBezierCurve.prototype.constructor = CubicBezierCurve;\n\nCubicBezierCurve.prototype.isCubicBezierCurve = true;\n\nCubicBezierCurve.prototype.getPoint = function ( t, optionalTarget = new Vector2() ) {\n\n\tconst point = optionalTarget;\n\n\tconst v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;\n\n\tpoint.set(\n\t\tCubicBezier( t, v0.x, v1.x, v2.x, v3.x ),\n\t\tCubicBezier( t, v0.y, v1.y, v2.y, v3.y )\n\t);\n\n\treturn point;\n\n};\n\nCubicBezierCurve.prototype.copy = function ( source ) {\n\n\tCurve.prototype.copy.call( this, source );\n\n\tthis.v0.copy( source.v0 );\n\tthis.v1.copy( source.v1 );\n\tthis.v2.copy( source.v2 );\n\tthis.v3.copy( source.v3 );\n\n\treturn this;\n\n};\n\nCubicBezierCurve.prototype.toJSON = function () {\n\n\tconst data = Curve.prototype.toJSON.call( this );\n\n\tdata.v0 = this.v0.toArray();\n\tdata.v1 = this.v1.toArray();\n\tdata.v2 = this.v2.toArray();\n\tdata.v3 = this.v3.toArray();\n\n\treturn data;\n\n};\n\nCubicBezierCurve.prototype.fromJSON = function ( json ) {\n\n\tCurve.prototype.fromJSON.call( this, json );\n\n\tthis.v0.fromArray( json.v0 );\n\tthis.v1.fromArray( json.v1 );\n\tthis.v2.fromArray( json.v2 );\n\tthis.v3.fromArray( json.v3 );\n\n\treturn this;\n\n};\n\nfunction CubicBezierCurve3( v0 = new Vector3(), v1 = new Vector3(), v2 = new Vector3(), v3 = new Vector3() ) {\n\n\tCurve.call( this );\n\n\tthis.type = 'CubicBezierCurve3';\n\n\tthis.v0 = v0;\n\tthis.v1 = v1;\n\tthis.v2 = v2;\n\tthis.v3 = v3;\n\n}\n\nCubicBezierCurve3.prototype = Object.create( Curve.prototype );\nCubicBezierCurve3.prototype.constructor = CubicBezierCurve3;\n\nCubicBezierCurve3.prototype.isCubicBezierCurve3 = true;\n\nCubicBezierCurve3.prototype.getPoint = function ( t, optionalTarget = new Vector3() ) {\n\n\tconst point = optionalTarget;\n\n\tconst v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;\n\n\tpoint.set(\n\t\tCubicBezier( t, v0.x, v1.x, v2.x, v3.x ),\n\t\tCubicBezier( t, v0.y, v1.y, v2.y, v3.y ),\n\t\tCubicBezier( t, v0.z, v1.z, v2.z, v3.z )\n\t);\n\n\treturn point;\n\n};\n\nCubicBezierCurve3.prototype.copy = function ( source ) {\n\n\tCurve.prototype.copy.call( this, source );\n\n\tthis.v0.copy( source.v0 );\n\tthis.v1.copy( source.v1 );\n\tthis.v2.copy( source.v2 );\n\tthis.v3.copy( source.v3 );\n\n\treturn this;\n\n};\n\nCubicBezierCurve3.prototype.toJSON = function () {\n\n\tconst data = Curve.prototype.toJSON.call( this );\n\n\tdata.v0 = this.v0.toArray();\n\tdata.v1 = this.v1.toArray();\n\tdata.v2 = this.v2.toArray();\n\tdata.v3 = this.v3.toArray();\n\n\treturn data;\n\n};\n\nCubicBezierCurve3.prototype.fromJSON = function ( json ) {\n\n\tCurve.prototype.fromJSON.call( this, json );\n\n\tthis.v0.fromArray( json.v0 );\n\tthis.v1.fromArray( json.v1 );\n\tthis.v2.fromArray( json.v2 );\n\tthis.v3.fromArray( json.v3 );\n\n\treturn this;\n\n};\n\nfunction LineCurve( v1 = new Vector2(), v2 = new Vector2() ) {\n\n\tCurve.call( this );\n\n\tthis.type = 'LineCurve';\n\n\tthis.v1 = v1;\n\tthis.v2 = v2;\n\n}\n\nLineCurve.prototype = Object.create( Curve.prototype );\nLineCurve.prototype.constructor = LineCurve;\n\nLineCurve.prototype.isLineCurve = true;\n\nLineCurve.prototype.getPoint = function ( t, optionalTarget = new Vector2() ) {\n\n\tconst point = optionalTarget;\n\n\tif ( t === 1 ) {\n\n\t\tpoint.copy( this.v2 );\n\n\t} else {\n\n\t\tpoint.copy( this.v2 ).sub( this.v1 );\n\t\tpoint.multiplyScalar( t ).add( this.v1 );\n\n\t}\n\n\treturn point;\n\n};\n\n// Line curve is linear, so we can overwrite default getPointAt\n\nLineCurve.prototype.getPointAt = function ( u, optionalTarget ) {\n\n\treturn this.getPoint( u, optionalTarget );\n\n};\n\nLineCurve.prototype.getTangent = function ( t, optionalTarget ) {\n\n\tconst tangent = optionalTarget || new Vector2();\n\n\ttangent.copy( this.v2 ).sub( this.v1 ).normalize();\n\n\treturn tangent;\n\n};\n\nLineCurve.prototype.copy = function ( source ) {\n\n\tCurve.prototype.copy.call( this, source );\n\n\tthis.v1.copy( source.v1 );\n\tthis.v2.copy( source.v2 );\n\n\treturn this;\n\n};\n\nLineCurve.prototype.toJSON = function () {\n\n\tconst data = Curve.prototype.toJSON.call( this );\n\n\tdata.v1 = this.v1.toArray();\n\tdata.v2 = this.v2.toArray();\n\n\treturn data;\n\n};\n\nLineCurve.prototype.fromJSON = function ( json ) {\n\n\tCurve.prototype.fromJSON.call( this, json );\n\n\tthis.v1.fromArray( json.v1 );\n\tthis.v2.fromArray( json.v2 );\n\n\treturn this;\n\n};\n\nfunction LineCurve3( v1 = new Vector3(), v2 = new Vector3() ) {\n\n\tCurve.call( this );\n\n\tthis.type = 'LineCurve3';\n\n\tthis.v1 = v1;\n\tthis.v2 = v2;\n\n}\n\nLineCurve3.prototype = Object.create( Curve.prototype );\nLineCurve3.prototype.constructor = LineCurve3;\n\nLineCurve3.prototype.isLineCurve3 = true;\n\nLineCurve3.prototype.getPoint = function ( t, optionalTarget = new Vector3() ) {\n\n\tconst point = optionalTarget;\n\n\tif ( t === 1 ) {\n\n\t\tpoint.copy( this.v2 );\n\n\t} else {\n\n\t\tpoint.copy( this.v2 ).sub( this.v1 );\n\t\tpoint.multiplyScalar( t ).add( this.v1 );\n\n\t}\n\n\treturn point;\n\n};\n\n// Line curve is linear, so we can overwrite default getPointAt\n\nLineCurve3.prototype.getPointAt = function ( u, optionalTarget ) {\n\n\treturn this.getPoint( u, optionalTarget );\n\n};\n\nLineCurve3.prototype.copy = function ( source ) {\n\n\tCurve.prototype.copy.call( this, source );\n\n\tthis.v1.copy( source.v1 );\n\tthis.v2.copy( source.v2 );\n\n\treturn this;\n\n};\n\nLineCurve3.prototype.toJSON = function () {\n\n\tconst data = Curve.prototype.toJSON.call( this );\n\n\tdata.v1 = this.v1.toArray();\n\tdata.v2 = this.v2.toArray();\n\n\treturn data;\n\n};\n\nLineCurve3.prototype.fromJSON = function ( json ) {\n\n\tCurve.prototype.fromJSON.call( this, json );\n\n\tthis.v1.fromArray( json.v1 );\n\tthis.v2.fromArray( json.v2 );\n\n\treturn this;\n\n};\n\nfunction QuadraticBezierCurve( v0 = new Vector2(), v1 = new Vector2(), v2 = new Vector2() ) {\n\n\tCurve.call( this );\n\n\tthis.type = 'QuadraticBezierCurve';\n\n\tthis.v0 = v0;\n\tthis.v1 = v1;\n\tthis.v2 = v2;\n\n}\n\nQuadraticBezierCurve.prototype = Object.create( Curve.prototype );\nQuadraticBezierCurve.prototype.constructor = QuadraticBezierCurve;\n\nQuadraticBezierCurve.prototype.isQuadraticBezierCurve = true;\n\nQuadraticBezierCurve.prototype.getPoint = function ( t, optionalTarget = new Vector2() ) {\n\n\tconst point = optionalTarget;\n\n\tconst v0 = this.v0, v1 = this.v1, v2 = this.v2;\n\n\tpoint.set(\n\t\tQuadraticBezier( t, v0.x, v1.x, v2.x ),\n\t\tQuadraticBezier( t, v0.y, v1.y, v2.y )\n\t);\n\n\treturn point;\n\n};\n\nQuadraticBezierCurve.prototype.copy = function ( source ) {\n\n\tCurve.prototype.copy.call( this, source );\n\n\tthis.v0.copy( source.v0 );\n\tthis.v1.copy( source.v1 );\n\tthis.v2.copy( source.v2 );\n\n\treturn this;\n\n};\n\nQuadraticBezierCurve.prototype.toJSON = function () {\n\n\tconst data = Curve.prototype.toJSON.call( this );\n\n\tdata.v0 = this.v0.toArray();\n\tdata.v1 = this.v1.toArray();\n\tdata.v2 = this.v2.toArray();\n\n\treturn data;\n\n};\n\nQuadraticBezierCurve.prototype.fromJSON = function ( json ) {\n\n\tCurve.prototype.fromJSON.call( this, json );\n\n\tthis.v0.fromArray( json.v0 );\n\tthis.v1.fromArray( json.v1 );\n\tthis.v2.fromArray( json.v2 );\n\n\treturn this;\n\n};\n\nfunction QuadraticBezierCurve3( v0 = new Vector3(), v1 = new Vector3(), v2 = new Vector3() ) {\n\n\tCurve.call( this );\n\n\tthis.type = 'QuadraticBezierCurve3';\n\n\tthis.v0 = v0;\n\tthis.v1 = v1;\n\tthis.v2 = v2;\n\n}\n\nQuadraticBezierCurve3.prototype = Object.create( Curve.prototype );\nQuadraticBezierCurve3.prototype.constructor = QuadraticBezierCurve3;\n\nQuadraticBezierCurve3.prototype.isQuadraticBezierCurve3 = true;\n\nQuadraticBezierCurve3.prototype.getPoint = function ( t, optionalTarget = new Vector3() ) {\n\n\tconst point = optionalTarget;\n\n\tconst v0 = this.v0, v1 = this.v1, v2 = this.v2;\n\n\tpoint.set(\n\t\tQuadraticBezier( t, v0.x, v1.x, v2.x ),\n\t\tQuadraticBezier( t, v0.y, v1.y, v2.y ),\n\t\tQuadraticBezier( t, v0.z, v1.z, v2.z )\n\t);\n\n\treturn point;\n\n};\n\nQuadraticBezierCurve3.prototype.copy = function ( source ) {\n\n\tCurve.prototype.copy.call( this, source );\n\n\tthis.v0.copy( source.v0 );\n\tthis.v1.copy( source.v1 );\n\tthis.v2.copy( source.v2 );\n\n\treturn this;\n\n};\n\nQuadraticBezierCurve3.prototype.toJSON = function () {\n\n\tconst data = Curve.prototype.toJSON.call( this );\n\n\tdata.v0 = this.v0.toArray();\n\tdata.v1 = this.v1.toArray();\n\tdata.v2 = this.v2.toArray();\n\n\treturn data;\n\n};\n\nQuadraticBezierCurve3.prototype.fromJSON = function ( json ) {\n\n\tCurve.prototype.fromJSON.call( this, json );\n\n\tthis.v0.fromArray( json.v0 );\n\tthis.v1.fromArray( json.v1 );\n\tthis.v2.fromArray( json.v2 );\n\n\treturn this;\n\n};\n\nfunction SplineCurve( points = [] ) {\n\n\tCurve.call( this );\n\n\tthis.type = 'SplineCurve';\n\n\tthis.points = points;\n\n}\n\nSplineCurve.prototype = Object.create( Curve.prototype );\nSplineCurve.prototype.constructor = SplineCurve;\n\nSplineCurve.prototype.isSplineCurve = true;\n\nSplineCurve.prototype.getPoint = function ( t, optionalTarget = new Vector2() ) {\n\n\tconst point = optionalTarget;\n\n\tconst points = this.points;\n\tconst p = ( points.length - 1 ) * t;\n\n\tconst intPoint = Math.floor( p );\n\tconst weight = p - intPoint;\n\n\tconst p0 = points[ intPoint === 0 ? intPoint : intPoint - 1 ];\n\tconst p1 = points[ intPoint ];\n\tconst p2 = points[ intPoint > points.length - 2 ? points.length - 1 : intPoint + 1 ];\n\tconst p3 = points[ intPoint > points.length - 3 ? points.length - 1 : intPoint + 2 ];\n\n\tpoint.set(\n\t\tCatmullRom( weight, p0.x, p1.x, p2.x, p3.x ),\n\t\tCatmullRom( weight, p0.y, p1.y, p2.y, p3.y )\n\t);\n\n\treturn point;\n\n};\n\nSplineCurve.prototype.copy = function ( source ) {\n\n\tCurve.prototype.copy.call( this, source );\n\n\tthis.points = [];\n\n\tfor ( let i = 0, l = source.points.length; i < l; i ++ ) {\n\n\t\tconst point = source.points[ i ];\n\n\t\tthis.points.push( point.clone() );\n\n\t}\n\n\treturn this;\n\n};\n\nSplineCurve.prototype.toJSON = function () {\n\n\tconst data = Curve.prototype.toJSON.call( this );\n\n\tdata.points = [];\n\n\tfor ( let i = 0, l = this.points.length; i < l; i ++ ) {\n\n\t\tconst point = this.points[ i ];\n\t\tdata.points.push( point.toArray() );\n\n\t}\n\n\treturn data;\n\n};\n\nSplineCurve.prototype.fromJSON = function ( json ) {\n\n\tCurve.prototype.fromJSON.call( this, json );\n\n\tthis.points = [];\n\n\tfor ( let i = 0, l = json.points.length; i < l; i ++ ) {\n\n\t\tconst point = json.points[ i ];\n\t\tthis.points.push( new Vector2().fromArray( point ) );\n\n\t}\n\n\treturn this;\n\n};\n\nvar Curves = /*#__PURE__*/Object.freeze({\n\t__proto__: null,\n\tArcCurve: ArcCurve,\n\tCatmullRomCurve3: CatmullRomCurve3,\n\tCubicBezierCurve: CubicBezierCurve,\n\tCubicBezierCurve3: CubicBezierCurve3,\n\tEllipseCurve: EllipseCurve,\n\tLineCurve: LineCurve,\n\tLineCurve3: LineCurve3,\n\tQuadraticBezierCurve: QuadraticBezierCurve,\n\tQuadraticBezierCurve3: QuadraticBezierCurve3,\n\tSplineCurve: SplineCurve\n});\n\n/**************************************************************\n *\tCurved Path - a curve path is simply a array of connected\n *  curves, but retains the api of a curve\n **************************************************************/\n\nfunction CurvePath() {\n\n\tCurve.call( this );\n\n\tthis.type = 'CurvePath';\n\n\tthis.curves = [];\n\tthis.autoClose = false; // Automatically closes the path\n\n}\n\nCurvePath.prototype = Object.assign( Object.create( Curve.prototype ), {\n\n\tconstructor: CurvePath,\n\n\tadd: function ( curve ) {\n\n\t\tthis.curves.push( curve );\n\n\t},\n\n\tclosePath: function () {\n\n\t\t// Add a line curve if start and end of lines are not connected\n\t\tconst startPoint = this.curves[ 0 ].getPoint( 0 );\n\t\tconst endPoint = this.curves[ this.curves.length - 1 ].getPoint( 1 );\n\n\t\tif ( ! startPoint.equals( endPoint ) ) {\n\n\t\t\tthis.curves.push( new LineCurve( endPoint, startPoint ) );\n\n\t\t}\n\n\t},\n\n\t// To get accurate point with reference to\n\t// entire path distance at time t,\n\t// following has to be done:\n\n\t// 1. Length of each sub path have to be known\n\t// 2. Locate and identify type of curve\n\t// 3. Get t for the curve\n\t// 4. Return curve.getPointAt(t')\n\n\tgetPoint: function ( t ) {\n\n\t\tconst d = t * this.getLength();\n\t\tconst curveLengths = this.getCurveLengths();\n\t\tlet i = 0;\n\n\t\t// To think about boundaries points.\n\n\t\twhile ( i < curveLengths.length ) {\n\n\t\t\tif ( curveLengths[ i ] >= d ) {\n\n\t\t\t\tconst diff = curveLengths[ i ] - d;\n\t\t\t\tconst curve = this.curves[ i ];\n\n\t\t\t\tconst segmentLength = curve.getLength();\n\t\t\t\tconst u = segmentLength === 0 ? 0 : 1 - diff / segmentLength;\n\n\t\t\t\treturn curve.getPointAt( u );\n\n\t\t\t}\n\n\t\t\ti ++;\n\n\t\t}\n\n\t\treturn null;\n\n\t\t// loop where sum != 0, sum > d , sum+1 <d\n\n\t},\n\n\t// We cannot use the default THREE.Curve getPoint() with getLength() because in\n\t// THREE.Curve, getLength() depends on getPoint() but in THREE.CurvePath\n\t// getPoint() depends on getLength\n\n\tgetLength: function () {\n\n\t\tconst lens = this.getCurveLengths();\n\t\treturn lens[ lens.length - 1 ];\n\n\t},\n\n\t// cacheLengths must be recalculated.\n\tupdateArcLengths: function () {\n\n\t\tthis.needsUpdate = true;\n\t\tthis.cacheLengths = null;\n\t\tthis.getCurveLengths();\n\n\t},\n\n\t// Compute lengths and cache them\n\t// We cannot overwrite getLengths() because UtoT mapping uses it.\n\n\tgetCurveLengths: function () {\n\n\t\t// We use cache values if curves and cache array are same length\n\n\t\tif ( this.cacheLengths && this.cacheLengths.length === this.curves.length ) {\n\n\t\t\treturn this.cacheLengths;\n\n\t\t}\n\n\t\t// Get length of sub-curve\n\t\t// Push sums into cached array\n\n\t\tconst lengths = [];\n\t\tlet sums = 0;\n\n\t\tfor ( let i = 0, l = this.curves.length; i < l; i ++ ) {\n\n\t\t\tsums += this.curves[ i ].getLength();\n\t\t\tlengths.push( sums );\n\n\t\t}\n\n\t\tthis.cacheLengths = lengths;\n\n\t\treturn lengths;\n\n\t},\n\n\tgetSpacedPoints: function ( divisions = 40 ) {\n\n\t\tconst points = [];\n\n\t\tfor ( let i = 0; i <= divisions; i ++ ) {\n\n\t\t\tpoints.push( this.getPoint( i / divisions ) );\n\n\t\t}\n\n\t\tif ( this.autoClose ) {\n\n\t\t\tpoints.push( points[ 0 ] );\n\n\t\t}\n\n\t\treturn points;\n\n\t},\n\n\tgetPoints: function ( divisions = 12 ) {\n\n\t\tconst points = [];\n\t\tlet last;\n\n\t\tfor ( let i = 0, curves = this.curves; i < curves.length; i ++ ) {\n\n\t\t\tconst curve = curves[ i ];\n\t\t\tconst resolution = ( curve && curve.isEllipseCurve ) ? divisions * 2\n\t\t\t\t: ( curve && ( curve.isLineCurve || curve.isLineCurve3 ) ) ? 1\n\t\t\t\t\t: ( curve && curve.isSplineCurve ) ? divisions * curve.points.length\n\t\t\t\t\t\t: divisions;\n\n\t\t\tconst pts = curve.getPoints( resolution );\n\n\t\t\tfor ( let j = 0; j < pts.length; j ++ ) {\n\n\t\t\t\tconst point = pts[ j ];\n\n\t\t\t\tif ( last && last.equals( point ) ) continue; // ensures no consecutive points are duplicates\n\n\t\t\t\tpoints.push( point );\n\t\t\t\tlast = point;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( this.autoClose && points.length > 1 && ! points[ points.length - 1 ].equals( points[ 0 ] ) ) {\n\n\t\t\tpoints.push( points[ 0 ] );\n\n\t\t}\n\n\t\treturn points;\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\tCurve.prototype.copy.call( this, source );\n\n\t\tthis.curves = [];\n\n\t\tfor ( let i = 0, l = source.curves.length; i < l; i ++ ) {\n\n\t\t\tconst curve = source.curves[ i ];\n\n\t\t\tthis.curves.push( curve.clone() );\n\n\t\t}\n\n\t\tthis.autoClose = source.autoClose;\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function () {\n\n\t\tconst data = Curve.prototype.toJSON.call( this );\n\n\t\tdata.autoClose = this.autoClose;\n\t\tdata.curves = [];\n\n\t\tfor ( let i = 0, l = this.curves.length; i < l; i ++ ) {\n\n\t\t\tconst curve = this.curves[ i ];\n\t\t\tdata.curves.push( curve.toJSON() );\n\n\t\t}\n\n\t\treturn data;\n\n\t},\n\n\tfromJSON: function ( json ) {\n\n\t\tCurve.prototype.fromJSON.call( this, json );\n\n\t\tthis.autoClose = json.autoClose;\n\t\tthis.curves = [];\n\n\t\tfor ( let i = 0, l = json.curves.length; i < l; i ++ ) {\n\n\t\t\tconst curve = json.curves[ i ];\n\t\t\tthis.curves.push( new Curves[ curve.type ]().fromJSON( curve ) );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n} );\n\nfunction Path( points ) {\n\n\tCurvePath.call( this );\n\n\tthis.type = 'Path';\n\n\tthis.currentPoint = new Vector2();\n\n\tif ( points ) {\n\n\t\tthis.setFromPoints( points );\n\n\t}\n\n}\n\nPath.prototype = Object.assign( Object.create( CurvePath.prototype ), {\n\n\tconstructor: Path,\n\n\tsetFromPoints: function ( points ) {\n\n\t\tthis.moveTo( points[ 0 ].x, points[ 0 ].y );\n\n\t\tfor ( let i = 1, l = points.length; i < l; i ++ ) {\n\n\t\t\tthis.lineTo( points[ i ].x, points[ i ].y );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tmoveTo: function ( x, y ) {\n\n\t\tthis.currentPoint.set( x, y ); // TODO consider referencing vectors instead of copying?\n\n\t\treturn this;\n\n\t},\n\n\tlineTo: function ( x, y ) {\n\n\t\tconst curve = new LineCurve( this.currentPoint.clone(), new Vector2( x, y ) );\n\t\tthis.curves.push( curve );\n\n\t\tthis.currentPoint.set( x, y );\n\n\t\treturn this;\n\n\t},\n\n\tquadraticCurveTo: function ( aCPx, aCPy, aX, aY ) {\n\n\t\tconst curve = new QuadraticBezierCurve(\n\t\t\tthis.currentPoint.clone(),\n\t\t\tnew Vector2( aCPx, aCPy ),\n\t\t\tnew Vector2( aX, aY )\n\t\t);\n\n\t\tthis.curves.push( curve );\n\n\t\tthis.currentPoint.set( aX, aY );\n\n\t\treturn this;\n\n\t},\n\n\tbezierCurveTo: function ( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY ) {\n\n\t\tconst curve = new CubicBezierCurve(\n\t\t\tthis.currentPoint.clone(),\n\t\t\tnew Vector2( aCP1x, aCP1y ),\n\t\t\tnew Vector2( aCP2x, aCP2y ),\n\t\t\tnew Vector2( aX, aY )\n\t\t);\n\n\t\tthis.curves.push( curve );\n\n\t\tthis.currentPoint.set( aX, aY );\n\n\t\treturn this;\n\n\t},\n\n\tsplineThru: function ( pts /*Array of Vector*/ ) {\n\n\t\tconst npts = [ this.currentPoint.clone() ].concat( pts );\n\n\t\tconst curve = new SplineCurve( npts );\n\t\tthis.curves.push( curve );\n\n\t\tthis.currentPoint.copy( pts[ pts.length - 1 ] );\n\n\t\treturn this;\n\n\t},\n\n\tarc: function ( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {\n\n\t\tconst x0 = this.currentPoint.x;\n\t\tconst y0 = this.currentPoint.y;\n\n\t\tthis.absarc( aX + x0, aY + y0, aRadius,\n\t\t\taStartAngle, aEndAngle, aClockwise );\n\n\t\treturn this;\n\n\t},\n\n\tabsarc: function ( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {\n\n\t\tthis.absellipse( aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise );\n\n\t\treturn this;\n\n\t},\n\n\tellipse: function ( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {\n\n\t\tconst x0 = this.currentPoint.x;\n\t\tconst y0 = this.currentPoint.y;\n\n\t\tthis.absellipse( aX + x0, aY + y0, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation );\n\n\t\treturn this;\n\n\t},\n\n\tabsellipse: function ( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {\n\n\t\tconst curve = new EllipseCurve( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation );\n\n\t\tif ( this.curves.length > 0 ) {\n\n\t\t\t// if a previous curve is present, attempt to join\n\t\t\tconst firstPoint = curve.getPoint( 0 );\n\n\t\t\tif ( ! firstPoint.equals( this.currentPoint ) ) {\n\n\t\t\t\tthis.lineTo( firstPoint.x, firstPoint.y );\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis.curves.push( curve );\n\n\t\tconst lastPoint = curve.getPoint( 1 );\n\t\tthis.currentPoint.copy( lastPoint );\n\n\t\treturn this;\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\tCurvePath.prototype.copy.call( this, source );\n\n\t\tthis.currentPoint.copy( source.currentPoint );\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function () {\n\n\t\tconst data = CurvePath.prototype.toJSON.call( this );\n\n\t\tdata.currentPoint = this.currentPoint.toArray();\n\n\t\treturn data;\n\n\t},\n\n\tfromJSON: function ( json ) {\n\n\t\tCurvePath.prototype.fromJSON.call( this, json );\n\n\t\tthis.currentPoint.fromArray( json.currentPoint );\n\n\t\treturn this;\n\n\t}\n\n} );\n\nfunction Shape( points ) {\n\n\tPath.call( this, points );\n\n\tthis.uuid = MathUtils.generateUUID();\n\n\tthis.type = 'Shape';\n\n\tthis.holes = [];\n\n}\n\nShape.prototype = Object.assign( Object.create( Path.prototype ), {\n\n\tconstructor: Shape,\n\n\tgetPointsHoles: function ( divisions ) {\n\n\t\tconst holesPts = [];\n\n\t\tfor ( let i = 0, l = this.holes.length; i < l; i ++ ) {\n\n\t\t\tholesPts[ i ] = this.holes[ i ].getPoints( divisions );\n\n\t\t}\n\n\t\treturn holesPts;\n\n\t},\n\n\t// get points of shape and holes (keypoints based on segments parameter)\n\n\textractPoints: function ( divisions ) {\n\n\t\treturn {\n\n\t\t\tshape: this.getPoints( divisions ),\n\t\t\tholes: this.getPointsHoles( divisions )\n\n\t\t};\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\tPath.prototype.copy.call( this, source );\n\n\t\tthis.holes = [];\n\n\t\tfor ( let i = 0, l = source.holes.length; i < l; i ++ ) {\n\n\t\t\tconst hole = source.holes[ i ];\n\n\t\t\tthis.holes.push( hole.clone() );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function () {\n\n\t\tconst data = Path.prototype.toJSON.call( this );\n\n\t\tdata.uuid = this.uuid;\n\t\tdata.holes = [];\n\n\t\tfor ( let i = 0, l = this.holes.length; i < l; i ++ ) {\n\n\t\t\tconst hole = this.holes[ i ];\n\t\t\tdata.holes.push( hole.toJSON() );\n\n\t\t}\n\n\t\treturn data;\n\n\t},\n\n\tfromJSON: function ( json ) {\n\n\t\tPath.prototype.fromJSON.call( this, json );\n\n\t\tthis.uuid = json.uuid;\n\t\tthis.holes = [];\n\n\t\tfor ( let i = 0, l = json.holes.length; i < l; i ++ ) {\n\n\t\t\tconst hole = json.holes[ i ];\n\t\t\tthis.holes.push( new Path().fromJSON( hole ) );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n} );\n\nfunction Light( color, intensity = 1 ) {\n\n\tObject3D.call( this );\n\n\tthis.type = 'Light';\n\n\tthis.color = new Color( color );\n\tthis.intensity = intensity;\n\n}\n\nLight.prototype = Object.assign( Object.create( Object3D.prototype ), {\n\n\tconstructor: Light,\n\n\tisLight: true,\n\n\tcopy: function ( source ) {\n\n\t\tObject3D.prototype.copy.call( this, source );\n\n\t\tthis.color.copy( source.color );\n\t\tthis.intensity = source.intensity;\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function ( meta ) {\n\n\t\tconst data = Object3D.prototype.toJSON.call( this, meta );\n\n\t\tdata.object.color = this.color.getHex();\n\t\tdata.object.intensity = this.intensity;\n\n\t\tif ( this.groundColor !== undefined ) data.object.groundColor = this.groundColor.getHex();\n\n\t\tif ( this.distance !== undefined ) data.object.distance = this.distance;\n\t\tif ( this.angle !== undefined ) data.object.angle = this.angle;\n\t\tif ( this.decay !== undefined ) data.object.decay = this.decay;\n\t\tif ( this.penumbra !== undefined ) data.object.penumbra = this.penumbra;\n\n\t\tif ( this.shadow !== undefined ) data.object.shadow = this.shadow.toJSON();\n\n\t\treturn data;\n\n\t}\n\n} );\n\nfunction HemisphereLight( skyColor, groundColor, intensity ) {\n\n\tLight.call( this, skyColor, intensity );\n\n\tthis.type = 'HemisphereLight';\n\n\tthis.position.copy( Object3D.DefaultUp );\n\tthis.updateMatrix();\n\n\tthis.groundColor = new Color( groundColor );\n\n}\n\nHemisphereLight.prototype = Object.assign( Object.create( Light.prototype ), {\n\n\tconstructor: HemisphereLight,\n\n\tisHemisphereLight: true,\n\n\tcopy: function ( source ) {\n\n\t\tLight.prototype.copy.call( this, source );\n\n\t\tthis.groundColor.copy( source.groundColor );\n\n\t\treturn this;\n\n\t}\n\n} );\n\nfunction LightShadow( camera ) {\n\n\tthis.camera = camera;\n\n\tthis.bias = 0;\n\tthis.normalBias = 0;\n\tthis.radius = 1;\n\n\tthis.mapSize = new Vector2( 512, 512 );\n\n\tthis.map = null;\n\tthis.mapPass = null;\n\tthis.matrix = new Matrix4();\n\n\tthis.autoUpdate = true;\n\tthis.needsUpdate = false;\n\n\tthis._frustum = new Frustum();\n\tthis._frameExtents = new Vector2( 1, 1 );\n\n\tthis._viewportCount = 1;\n\n\tthis._viewports = [\n\n\t\tnew Vector4( 0, 0, 1, 1 )\n\n\t];\n\n}\n\nObject.assign( LightShadow.prototype, {\n\n\t_projScreenMatrix: new Matrix4(),\n\n\t_lightPositionWorld: new Vector3(),\n\n\t_lookTarget: new Vector3(),\n\n\tgetViewportCount: function () {\n\n\t\treturn this._viewportCount;\n\n\t},\n\n\tgetFrustum: function () {\n\n\t\treturn this._frustum;\n\n\t},\n\n\tupdateMatrices: function ( light ) {\n\n\t\tconst shadowCamera = this.camera,\n\t\t\tshadowMatrix = this.matrix,\n\t\t\tprojScreenMatrix = this._projScreenMatrix,\n\t\t\tlookTarget = this._lookTarget,\n\t\t\tlightPositionWorld = this._lightPositionWorld;\n\n\t\tlightPositionWorld.setFromMatrixPosition( light.matrixWorld );\n\t\tshadowCamera.position.copy( lightPositionWorld );\n\n\t\tlookTarget.setFromMatrixPosition( light.target.matrixWorld );\n\t\tshadowCamera.lookAt( lookTarget );\n\t\tshadowCamera.updateMatrixWorld();\n\n\t\tprojScreenMatrix.multiplyMatrices( shadowCamera.projectionMatrix, shadowCamera.matrixWorldInverse );\n\t\tthis._frustum.setFromProjectionMatrix( projScreenMatrix );\n\n\t\tshadowMatrix.set(\n\t\t\t0.5, 0.0, 0.0, 0.5,\n\t\t\t0.0, 0.5, 0.0, 0.5,\n\t\t\t0.0, 0.0, 0.5, 0.5,\n\t\t\t0.0, 0.0, 0.0, 1.0\n\t\t);\n\n\t\tshadowMatrix.multiply( shadowCamera.projectionMatrix );\n\t\tshadowMatrix.multiply( shadowCamera.matrixWorldInverse );\n\n\t},\n\n\tgetViewport: function ( viewportIndex ) {\n\n\t\treturn this._viewports[ viewportIndex ];\n\n\t},\n\n\tgetFrameExtents: function () {\n\n\t\treturn this._frameExtents;\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\tthis.camera = source.camera.clone();\n\n\t\tthis.bias = source.bias;\n\t\tthis.radius = source.radius;\n\n\t\tthis.mapSize.copy( source.mapSize );\n\n\t\treturn this;\n\n\t},\n\n\tclone: function () {\n\n\t\treturn new this.constructor().copy( this );\n\n\t},\n\n\ttoJSON: function () {\n\n\t\tconst object = {};\n\n\t\tif ( this.bias !== 0 ) object.bias = this.bias;\n\t\tif ( this.normalBias !== 0 ) object.normalBias = this.normalBias;\n\t\tif ( this.radius !== 1 ) object.radius = this.radius;\n\t\tif ( this.mapSize.x !== 512 || this.mapSize.y !== 512 ) object.mapSize = this.mapSize.toArray();\n\n\t\tobject.camera = this.camera.toJSON( false ).object;\n\t\tdelete object.camera.matrix;\n\n\t\treturn object;\n\n\t}\n\n} );\n\nfunction SpotLightShadow() {\n\n\tLightShadow.call( this, new PerspectiveCamera( 50, 1, 0.5, 500 ) );\n\n\tthis.focus = 1;\n\n}\n\nSpotLightShadow.prototype = Object.assign( Object.create( LightShadow.prototype ), {\n\n\tconstructor: SpotLightShadow,\n\n\tisSpotLightShadow: true,\n\n\tupdateMatrices: function ( light ) {\n\n\t\tconst camera = this.camera;\n\n\t\tconst fov = MathUtils.RAD2DEG * 2 * light.angle * this.focus;\n\t\tconst aspect = this.mapSize.width / this.mapSize.height;\n\t\tconst far = light.distance || camera.far;\n\n\t\tif ( fov !== camera.fov || aspect !== camera.aspect || far !== camera.far ) {\n\n\t\t\tcamera.fov = fov;\n\t\t\tcamera.aspect = aspect;\n\t\t\tcamera.far = far;\n\t\t\tcamera.updateProjectionMatrix();\n\n\t\t}\n\n\t\tLightShadow.prototype.updateMatrices.call( this, light );\n\n\t}\n\n} );\n\nfunction SpotLight( color, intensity, distance, angle, penumbra, decay ) {\n\n\tLight.call( this, color, intensity );\n\n\tthis.type = 'SpotLight';\n\n\tthis.position.copy( Object3D.DefaultUp );\n\tthis.updateMatrix();\n\n\tthis.target = new Object3D();\n\n\tObject.defineProperty( this, 'power', {\n\t\tget: function () {\n\n\t\t\t// intensity = power per solid angle.\n\t\t\t// ref: equation (17) from https://seblagarde.files.wordpress.com/2015/07/course_notes_moving_frostbite_to_pbr_v32.pdf\n\t\t\treturn this.intensity * Math.PI;\n\n\t\t},\n\t\tset: function ( power ) {\n\n\t\t\t// intensity = power per solid angle.\n\t\t\t// ref: equation (17) from https://seblagarde.files.wordpress.com/2015/07/course_notes_moving_frostbite_to_pbr_v32.pdf\n\t\t\tthis.intensity = power / Math.PI;\n\n\t\t}\n\t} );\n\n\tthis.distance = ( distance !== undefined ) ? distance : 0;\n\tthis.angle = ( angle !== undefined ) ? angle : Math.PI / 3;\n\tthis.penumbra = ( penumbra !== undefined ) ? penumbra : 0;\n\tthis.decay = ( decay !== undefined ) ? decay : 1;\t// for physically correct lights, should be 2.\n\n\tthis.shadow = new SpotLightShadow();\n\n}\n\nSpotLight.prototype = Object.assign( Object.create( Light.prototype ), {\n\n\tconstructor: SpotLight,\n\n\tisSpotLight: true,\n\n\tcopy: function ( source ) {\n\n\t\tLight.prototype.copy.call( this, source );\n\n\t\tthis.distance = source.distance;\n\t\tthis.angle = source.angle;\n\t\tthis.penumbra = source.penumbra;\n\t\tthis.decay = source.decay;\n\n\t\tthis.target = source.target.clone();\n\n\t\tthis.shadow = source.shadow.clone();\n\n\t\treturn this;\n\n\t}\n\n} );\n\nfunction PointLightShadow() {\n\n\tLightShadow.call( this, new PerspectiveCamera( 90, 1, 0.5, 500 ) );\n\n\tthis._frameExtents = new Vector2( 4, 2 );\n\n\tthis._viewportCount = 6;\n\n\tthis._viewports = [\n\t\t// These viewports map a cube-map onto a 2D texture with the\n\t\t// following orientation:\n\t\t//\n\t\t//  xzXZ\n\t\t//   y Y\n\t\t//\n\t\t// X - Positive x direction\n\t\t// x - Negative x direction\n\t\t// Y - Positive y direction\n\t\t// y - Negative y direction\n\t\t// Z - Positive z direction\n\t\t// z - Negative z direction\n\n\t\t// positive X\n\t\tnew Vector4( 2, 1, 1, 1 ),\n\t\t// negative X\n\t\tnew Vector4( 0, 1, 1, 1 ),\n\t\t// positive Z\n\t\tnew Vector4( 3, 1, 1, 1 ),\n\t\t// negative Z\n\t\tnew Vector4( 1, 1, 1, 1 ),\n\t\t// positive Y\n\t\tnew Vector4( 3, 0, 1, 1 ),\n\t\t// negative Y\n\t\tnew Vector4( 1, 0, 1, 1 )\n\t];\n\n\tthis._cubeDirections = [\n\t\tnew Vector3( 1, 0, 0 ), new Vector3( - 1, 0, 0 ), new Vector3( 0, 0, 1 ),\n\t\tnew Vector3( 0, 0, - 1 ), new Vector3( 0, 1, 0 ), new Vector3( 0, - 1, 0 )\n\t];\n\n\tthis._cubeUps = [\n\t\tnew Vector3( 0, 1, 0 ), new Vector3( 0, 1, 0 ), new Vector3( 0, 1, 0 ),\n\t\tnew Vector3( 0, 1, 0 ), new Vector3( 0, 0, 1 ),\tnew Vector3( 0, 0, - 1 )\n\t];\n\n}\n\nPointLightShadow.prototype = Object.assign( Object.create( LightShadow.prototype ), {\n\n\tconstructor: PointLightShadow,\n\n\tisPointLightShadow: true,\n\n\tupdateMatrices: function ( light, viewportIndex = 0 ) {\n\n\t\tconst camera = this.camera,\n\t\t\tshadowMatrix = this.matrix,\n\t\t\tlightPositionWorld = this._lightPositionWorld,\n\t\t\tlookTarget = this._lookTarget,\n\t\t\tprojScreenMatrix = this._projScreenMatrix;\n\n\t\tlightPositionWorld.setFromMatrixPosition( light.matrixWorld );\n\t\tcamera.position.copy( lightPositionWorld );\n\n\t\tlookTarget.copy( camera.position );\n\t\tlookTarget.add( this._cubeDirections[ viewportIndex ] );\n\t\tcamera.up.copy( this._cubeUps[ viewportIndex ] );\n\t\tcamera.lookAt( lookTarget );\n\t\tcamera.updateMatrixWorld();\n\n\t\tshadowMatrix.makeTranslation( - lightPositionWorld.x, - lightPositionWorld.y, - lightPositionWorld.z );\n\n\t\tprojScreenMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );\n\t\tthis._frustum.setFromProjectionMatrix( projScreenMatrix );\n\n\t}\n\n} );\n\nfunction PointLight( color, intensity, distance, decay ) {\n\n\tLight.call( this, color, intensity );\n\n\tthis.type = 'PointLight';\n\n\tObject.defineProperty( this, 'power', {\n\t\tget: function () {\n\n\t\t\t// intensity = power per solid angle.\n\t\t\t// ref: equation (15) from https://seblagarde.files.wordpress.com/2015/07/course_notes_moving_frostbite_to_pbr_v32.pdf\n\t\t\treturn this.intensity * 4 * Math.PI;\n\n\t\t},\n\t\tset: function ( power ) {\n\n\t\t\t// intensity = power per solid angle.\n\t\t\t// ref: equation (15) from https://seblagarde.files.wordpress.com/2015/07/course_notes_moving_frostbite_to_pbr_v32.pdf\n\t\t\tthis.intensity = power / ( 4 * Math.PI );\n\n\t\t}\n\t} );\n\n\tthis.distance = ( distance !== undefined ) ? distance : 0;\n\tthis.decay = ( decay !== undefined ) ? decay : 1;\t// for physically correct lights, should be 2.\n\n\tthis.shadow = new PointLightShadow();\n\n}\n\nPointLight.prototype = Object.assign( Object.create( Light.prototype ), {\n\n\tconstructor: PointLight,\n\n\tisPointLight: true,\n\n\tcopy: function ( source ) {\n\n\t\tLight.prototype.copy.call( this, source );\n\n\t\tthis.distance = source.distance;\n\t\tthis.decay = source.decay;\n\n\t\tthis.shadow = source.shadow.clone();\n\n\t\treturn this;\n\n\t}\n\n} );\n\nfunction OrthographicCamera( left = - 1, right = 1, top = 1, bottom = - 1, near = 0.1, far = 2000 ) {\n\n\tCamera.call( this );\n\n\tthis.type = 'OrthographicCamera';\n\n\tthis.zoom = 1;\n\tthis.view = null;\n\n\tthis.left = left;\n\tthis.right = right;\n\tthis.top = top;\n\tthis.bottom = bottom;\n\n\tthis.near = near;\n\tthis.far = far;\n\n\tthis.updateProjectionMatrix();\n\n}\n\nOrthographicCamera.prototype = Object.assign( Object.create( Camera.prototype ), {\n\n\tconstructor: OrthographicCamera,\n\n\tisOrthographicCamera: true,\n\n\tcopy: function ( source, recursive ) {\n\n\t\tCamera.prototype.copy.call( this, source, recursive );\n\n\t\tthis.left = source.left;\n\t\tthis.right = source.right;\n\t\tthis.top = source.top;\n\t\tthis.bottom = source.bottom;\n\t\tthis.near = source.near;\n\t\tthis.far = source.far;\n\n\t\tthis.zoom = source.zoom;\n\t\tthis.view = source.view === null ? null : Object.assign( {}, source.view );\n\n\t\treturn this;\n\n\t},\n\n\tsetViewOffset: function ( fullWidth, fullHeight, x, y, width, height ) {\n\n\t\tif ( this.view === null ) {\n\n\t\t\tthis.view = {\n\t\t\t\tenabled: true,\n\t\t\t\tfullWidth: 1,\n\t\t\t\tfullHeight: 1,\n\t\t\t\toffsetX: 0,\n\t\t\t\toffsetY: 0,\n\t\t\t\twidth: 1,\n\t\t\t\theight: 1\n\t\t\t};\n\n\t\t}\n\n\t\tthis.view.enabled = true;\n\t\tthis.view.fullWidth = fullWidth;\n\t\tthis.view.fullHeight = fullHeight;\n\t\tthis.view.offsetX = x;\n\t\tthis.view.offsetY = y;\n\t\tthis.view.width = width;\n\t\tthis.view.height = height;\n\n\t\tthis.updateProjectionMatrix();\n\n\t},\n\n\tclearViewOffset: function () {\n\n\t\tif ( this.view !== null ) {\n\n\t\t\tthis.view.enabled = false;\n\n\t\t}\n\n\t\tthis.updateProjectionMatrix();\n\n\t},\n\n\tupdateProjectionMatrix: function () {\n\n\t\tconst dx = ( this.right - this.left ) / ( 2 * this.zoom );\n\t\tconst dy = ( this.top - this.bottom ) / ( 2 * this.zoom );\n\t\tconst cx = ( this.right + this.left ) / 2;\n\t\tconst cy = ( this.top + this.bottom ) / 2;\n\n\t\tlet left = cx - dx;\n\t\tlet right = cx + dx;\n\t\tlet top = cy + dy;\n\t\tlet bottom = cy - dy;\n\n\t\tif ( this.view !== null && this.view.enabled ) {\n\n\t\t\tconst scaleW = ( this.right - this.left ) / this.view.fullWidth / this.zoom;\n\t\t\tconst scaleH = ( this.top - this.bottom ) / this.view.fullHeight / this.zoom;\n\n\t\t\tleft += scaleW * this.view.offsetX;\n\t\t\tright = left + scaleW * this.view.width;\n\t\t\ttop -= scaleH * this.view.offsetY;\n\t\t\tbottom = top - scaleH * this.view.height;\n\n\t\t}\n\n\t\tthis.projectionMatrix.makeOrthographic( left, right, top, bottom, this.near, this.far );\n\n\t\tthis.projectionMatrixInverse.copy( this.projectionMatrix ).invert();\n\n\t},\n\n\ttoJSON: function ( meta ) {\n\n\t\tconst data = Object3D.prototype.toJSON.call( this, meta );\n\n\t\tdata.object.zoom = this.zoom;\n\t\tdata.object.left = this.left;\n\t\tdata.object.right = this.right;\n\t\tdata.object.top = this.top;\n\t\tdata.object.bottom = this.bottom;\n\t\tdata.object.near = this.near;\n\t\tdata.object.far = this.far;\n\n\t\tif ( this.view !== null ) data.object.view = Object.assign( {}, this.view );\n\n\t\treturn data;\n\n\t}\n\n} );\n\nfunction DirectionalLightShadow() {\n\n\tLightShadow.call( this, new OrthographicCamera( - 5, 5, 5, - 5, 0.5, 500 ) );\n\n}\n\nDirectionalLightShadow.prototype = Object.assign( Object.create( LightShadow.prototype ), {\n\n\tconstructor: DirectionalLightShadow,\n\n\tisDirectionalLightShadow: true,\n\n\tupdateMatrices: function ( light ) {\n\n\t\tLightShadow.prototype.updateMatrices.call( this, light );\n\n\t}\n\n} );\n\nfunction DirectionalLight( color, intensity ) {\n\n\tLight.call( this, color, intensity );\n\n\tthis.type = 'DirectionalLight';\n\n\tthis.position.copy( Object3D.DefaultUp );\n\tthis.updateMatrix();\n\n\tthis.target = new Object3D();\n\n\tthis.shadow = new DirectionalLightShadow();\n\n}\n\nDirectionalLight.prototype = Object.assign( Object.create( Light.prototype ), {\n\n\tconstructor: DirectionalLight,\n\n\tisDirectionalLight: true,\n\n\tcopy: function ( source ) {\n\n\t\tLight.prototype.copy.call( this, source );\n\n\t\tthis.target = source.target.clone();\n\n\t\tthis.shadow = source.shadow.clone();\n\n\t\treturn this;\n\n\t}\n\n} );\n\nfunction AmbientLight( color, intensity ) {\n\n\tLight.call( this, color, intensity );\n\n\tthis.type = 'AmbientLight';\n\n}\n\nAmbientLight.prototype = Object.assign( Object.create( Light.prototype ), {\n\n\tconstructor: AmbientLight,\n\n\tisAmbientLight: true\n\n} );\n\nfunction RectAreaLight( color, intensity, width, height ) {\n\n\tLight.call( this, color, intensity );\n\n\tthis.type = 'RectAreaLight';\n\n\tthis.width = ( width !== undefined ) ? width : 10;\n\tthis.height = ( height !== undefined ) ? height : 10;\n\n}\n\nRectAreaLight.prototype = Object.assign( Object.create( Light.prototype ), {\n\n\tconstructor: RectAreaLight,\n\n\tisRectAreaLight: true,\n\n\tcopy: function ( source ) {\n\n\t\tLight.prototype.copy.call( this, source );\n\n\t\tthis.width = source.width;\n\t\tthis.height = source.height;\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function ( meta ) {\n\n\t\tconst data = Light.prototype.toJSON.call( this, meta );\n\n\t\tdata.object.width = this.width;\n\t\tdata.object.height = this.height;\n\n\t\treturn data;\n\n\t}\n\n} );\n\n/**\n * Primary reference:\n *   https://graphics.stanford.edu/papers/envmap/envmap.pdf\n *\n * Secondary reference:\n *   https://www.ppsloan.org/publications/StupidSH36.pdf\n */\n\n// 3-band SH defined by 9 coefficients\n\nclass SphericalHarmonics3 {\n\n\tconstructor() {\n\n\t\tObject.defineProperty( this, 'isSphericalHarmonics3', { value: true } );\n\n\t\tthis.coefficients = [];\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tthis.coefficients.push( new Vector3() );\n\n\t\t}\n\n\t}\n\n\tset( coefficients ) {\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tthis.coefficients[ i ].copy( coefficients[ i ] );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tzero() {\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tthis.coefficients[ i ].set( 0, 0, 0 );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\t// get the radiance in the direction of the normal\n\t// target is a Vector3\n\tgetAt( normal, target ) {\n\n\t\t// normal is assumed to be unit length\n\n\t\tconst x = normal.x, y = normal.y, z = normal.z;\n\n\t\tconst coeff = this.coefficients;\n\n\t\t// band 0\n\t\ttarget.copy( coeff[ 0 ] ).multiplyScalar( 0.282095 );\n\n\t\t// band 1\n\t\ttarget.addScaledVector( coeff[ 1 ], 0.488603 * y );\n\t\ttarget.addScaledVector( coeff[ 2 ], 0.488603 * z );\n\t\ttarget.addScaledVector( coeff[ 3 ], 0.488603 * x );\n\n\t\t// band 2\n\t\ttarget.addScaledVector( coeff[ 4 ], 1.092548 * ( x * y ) );\n\t\ttarget.addScaledVector( coeff[ 5 ], 1.092548 * ( y * z ) );\n\t\ttarget.addScaledVector( coeff[ 6 ], 0.315392 * ( 3.0 * z * z - 1.0 ) );\n\t\ttarget.addScaledVector( coeff[ 7 ], 1.092548 * ( x * z ) );\n\t\ttarget.addScaledVector( coeff[ 8 ], 0.546274 * ( x * x - y * y ) );\n\n\t\treturn target;\n\n\t}\n\n\t// get the irradiance (radiance convolved with cosine lobe) in the direction of the normal\n\t// target is a Vector3\n\t// https://graphics.stanford.edu/papers/envmap/envmap.pdf\n\tgetIrradianceAt( normal, target ) {\n\n\t\t// normal is assumed to be unit length\n\n\t\tconst x = normal.x, y = normal.y, z = normal.z;\n\n\t\tconst coeff = this.coefficients;\n\n\t\t// band 0\n\t\ttarget.copy( coeff[ 0 ] ).multiplyScalar( 0.886227 ); // π * 0.282095\n\n\t\t// band 1\n\t\ttarget.addScaledVector( coeff[ 1 ], 2.0 * 0.511664 * y ); // ( 2 * π / 3 ) * 0.488603\n\t\ttarget.addScaledVector( coeff[ 2 ], 2.0 * 0.511664 * z );\n\t\ttarget.addScaledVector( coeff[ 3 ], 2.0 * 0.511664 * x );\n\n\t\t// band 2\n\t\ttarget.addScaledVector( coeff[ 4 ], 2.0 * 0.429043 * x * y ); // ( π / 4 ) * 1.092548\n\t\ttarget.addScaledVector( coeff[ 5 ], 2.0 * 0.429043 * y * z );\n\t\ttarget.addScaledVector( coeff[ 6 ], 0.743125 * z * z - 0.247708 ); // ( π / 4 ) * 0.315392 * 3\n\t\ttarget.addScaledVector( coeff[ 7 ], 2.0 * 0.429043 * x * z );\n\t\ttarget.addScaledVector( coeff[ 8 ], 0.429043 * ( x * x - y * y ) ); // ( π / 4 ) * 0.546274\n\n\t\treturn target;\n\n\t}\n\n\tadd( sh ) {\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tthis.coefficients[ i ].add( sh.coefficients[ i ] );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\taddScaledSH( sh, s ) {\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tthis.coefficients[ i ].addScaledVector( sh.coefficients[ i ], s );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tscale( s ) {\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tthis.coefficients[ i ].multiplyScalar( s );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tlerp( sh, alpha ) {\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tthis.coefficients[ i ].lerp( sh.coefficients[ i ], alpha );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tequals( sh ) {\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tif ( ! this.coefficients[ i ].equals( sh.coefficients[ i ] ) ) {\n\n\t\t\t\treturn false;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn true;\n\n\t}\n\n\tcopy( sh ) {\n\n\t\treturn this.set( sh.coefficients );\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tfromArray( array, offset = 0 ) {\n\n\t\tconst coefficients = this.coefficients;\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tcoefficients[ i ].fromArray( array, offset + ( i * 3 ) );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tconst coefficients = this.coefficients;\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tcoefficients[ i ].toArray( array, offset + ( i * 3 ) );\n\n\t\t}\n\n\t\treturn array;\n\n\t}\n\n\t// evaluate the basis functions\n\t// shBasis is an Array[ 9 ]\n\tstatic getBasisAt( normal, shBasis ) {\n\n\t\t// normal is assumed to be unit length\n\n\t\tconst x = normal.x, y = normal.y, z = normal.z;\n\n\t\t// band 0\n\t\tshBasis[ 0 ] = 0.282095;\n\n\t\t// band 1\n\t\tshBasis[ 1 ] = 0.488603 * y;\n\t\tshBasis[ 2 ] = 0.488603 * z;\n\t\tshBasis[ 3 ] = 0.488603 * x;\n\n\t\t// band 2\n\t\tshBasis[ 4 ] = 1.092548 * x * y;\n\t\tshBasis[ 5 ] = 1.092548 * y * z;\n\t\tshBasis[ 6 ] = 0.315392 * ( 3 * z * z - 1 );\n\t\tshBasis[ 7 ] = 1.092548 * x * z;\n\t\tshBasis[ 8 ] = 0.546274 * ( x * x - y * y );\n\n\t}\n\n}\n\nfunction LightProbe( sh, intensity ) {\n\n\tLight.call( this, undefined, intensity );\n\n\tthis.type = 'LightProbe';\n\n\tthis.sh = ( sh !== undefined ) ? sh : new SphericalHarmonics3();\n\n}\n\nLightProbe.prototype = Object.assign( Object.create( Light.prototype ), {\n\n\tconstructor: LightProbe,\n\n\tisLightProbe: true,\n\n\tcopy: function ( source ) {\n\n\t\tLight.prototype.copy.call( this, source );\n\n\t\tthis.sh.copy( source.sh );\n\n\t\treturn this;\n\n\t},\n\n\tfromJSON: function ( json ) {\n\n\t\tthis.intensity = json.intensity; // TODO: Move this bit to Light.fromJSON();\n\t\tthis.sh.fromArray( json.sh );\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function ( meta ) {\n\n\t\tconst data = Light.prototype.toJSON.call( this, meta );\n\n\t\tdata.object.sh = this.sh.toArray();\n\n\t\treturn data;\n\n\t}\n\n} );\n\nfunction MaterialLoader( manager ) {\n\n\tLoader.call( this, manager );\n\n\tthis.textures = {};\n\n}\n\nMaterialLoader.prototype = Object.assign( Object.create( Loader.prototype ), {\n\n\tconstructor: MaterialLoader,\n\n\tload: function ( url, onLoad, onProgress, onError ) {\n\n\t\tconst scope = this;\n\n\t\tconst loader = new FileLoader( scope.manager );\n\t\tloader.setPath( scope.path );\n\t\tloader.setRequestHeader( scope.requestHeader );\n\t\tloader.setWithCredentials( scope.withCredentials );\n\t\tloader.load( url, function ( text ) {\n\n\t\t\ttry {\n\n\t\t\t\tonLoad( scope.parse( JSON.parse( text ) ) );\n\n\t\t\t} catch ( e ) {\n\n\t\t\t\tif ( onError ) {\n\n\t\t\t\t\tonError( e );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.error( e );\n\n\t\t\t\t}\n\n\t\t\t\tscope.manager.itemError( url );\n\n\t\t\t}\n\n\t\t}, onProgress, onError );\n\n\t},\n\n\tparse: function ( json ) {\n\n\t\tconst textures = this.textures;\n\n\t\tfunction getTexture( name ) {\n\n\t\t\tif ( textures[ name ] === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.MaterialLoader: Undefined texture', name );\n\n\t\t\t}\n\n\t\t\treturn textures[ name ];\n\n\t\t}\n\n\t\tconst material = new Materials[ json.type ]();\n\n\t\tif ( json.uuid !== undefined ) material.uuid = json.uuid;\n\t\tif ( json.name !== undefined ) material.name = json.name;\n\t\tif ( json.color !== undefined && material.color !== undefined ) material.color.setHex( json.color );\n\t\tif ( json.roughness !== undefined ) material.roughness = json.roughness;\n\t\tif ( json.metalness !== undefined ) material.metalness = json.metalness;\n\t\tif ( json.sheen !== undefined ) material.sheen = new Color().setHex( json.sheen );\n\t\tif ( json.emissive !== undefined && material.emissive !== undefined ) material.emissive.setHex( json.emissive );\n\t\tif ( json.specular !== undefined && material.specular !== undefined ) material.specular.setHex( json.specular );\n\t\tif ( json.shininess !== undefined ) material.shininess = json.shininess;\n\t\tif ( json.clearcoat !== undefined ) material.clearcoat = json.clearcoat;\n\t\tif ( json.clearcoatRoughness !== undefined ) material.clearcoatRoughness = json.clearcoatRoughness;\n\t\tif ( json.fog !== undefined ) material.fog = json.fog;\n\t\tif ( json.flatShading !== undefined ) material.flatShading = json.flatShading;\n\t\tif ( json.blending !== undefined ) material.blending = json.blending;\n\t\tif ( json.combine !== undefined ) material.combine = json.combine;\n\t\tif ( json.side !== undefined ) material.side = json.side;\n\t\tif ( json.opacity !== undefined ) material.opacity = json.opacity;\n\t\tif ( json.transparent !== undefined ) material.transparent = json.transparent;\n\t\tif ( json.alphaTest !== undefined ) material.alphaTest = json.alphaTest;\n\t\tif ( json.depthTest !== undefined ) material.depthTest = json.depthTest;\n\t\tif ( json.depthWrite !== undefined ) material.depthWrite = json.depthWrite;\n\t\tif ( json.colorWrite !== undefined ) material.colorWrite = json.colorWrite;\n\n\t\tif ( json.stencilWrite !== undefined ) material.stencilWrite = json.stencilWrite;\n\t\tif ( json.stencilWriteMask !== undefined ) material.stencilWriteMask = json.stencilWriteMask;\n\t\tif ( json.stencilFunc !== undefined ) material.stencilFunc = json.stencilFunc;\n\t\tif ( json.stencilRef !== undefined ) material.stencilRef = json.stencilRef;\n\t\tif ( json.stencilFuncMask !== undefined ) material.stencilFuncMask = json.stencilFuncMask;\n\t\tif ( json.stencilFail !== undefined ) material.stencilFail = json.stencilFail;\n\t\tif ( json.stencilZFail !== undefined ) material.stencilZFail = json.stencilZFail;\n\t\tif ( json.stencilZPass !== undefined ) material.stencilZPass = json.stencilZPass;\n\n\t\tif ( json.wireframe !== undefined ) material.wireframe = json.wireframe;\n\t\tif ( json.wireframeLinewidth !== undefined ) material.wireframeLinewidth = json.wireframeLinewidth;\n\t\tif ( json.wireframeLinecap !== undefined ) material.wireframeLinecap = json.wireframeLinecap;\n\t\tif ( json.wireframeLinejoin !== undefined ) material.wireframeLinejoin = json.wireframeLinejoin;\n\n\t\tif ( json.rotation !== undefined ) material.rotation = json.rotation;\n\n\t\tif ( json.linewidth !== 1 ) material.linewidth = json.linewidth;\n\t\tif ( json.dashSize !== undefined ) material.dashSize = json.dashSize;\n\t\tif ( json.gapSize !== undefined ) material.gapSize = json.gapSize;\n\t\tif ( json.scale !== undefined ) material.scale = json.scale;\n\n\t\tif ( json.polygonOffset !== undefined ) material.polygonOffset = json.polygonOffset;\n\t\tif ( json.polygonOffsetFactor !== undefined ) material.polygonOffsetFactor = json.polygonOffsetFactor;\n\t\tif ( json.polygonOffsetUnits !== undefined ) material.polygonOffsetUnits = json.polygonOffsetUnits;\n\n\t\tif ( json.skinning !== undefined ) material.skinning = json.skinning;\n\t\tif ( json.morphTargets !== undefined ) material.morphTargets = json.morphTargets;\n\t\tif ( json.morphNormals !== undefined ) material.morphNormals = json.morphNormals;\n\t\tif ( json.dithering !== undefined ) material.dithering = json.dithering;\n\n\t\tif ( json.vertexTangents !== undefined ) material.vertexTangents = json.vertexTangents;\n\n\t\tif ( json.visible !== undefined ) material.visible = json.visible;\n\n\t\tif ( json.toneMapped !== undefined ) material.toneMapped = json.toneMapped;\n\n\t\tif ( json.userData !== undefined ) material.userData = json.userData;\n\n\t\tif ( json.vertexColors !== undefined ) {\n\n\t\t\tif ( typeof json.vertexColors === 'number' ) {\n\n\t\t\t\tmaterial.vertexColors = ( json.vertexColors > 0 ) ? true : false;\n\n\t\t\t} else {\n\n\t\t\t\tmaterial.vertexColors = json.vertexColors;\n\n\t\t\t}\n\n\t\t}\n\n\t\t// Shader Material\n\n\t\tif ( json.uniforms !== undefined ) {\n\n\t\t\tfor ( const name in json.uniforms ) {\n\n\t\t\t\tconst uniform = json.uniforms[ name ];\n\n\t\t\t\tmaterial.uniforms[ name ] = {};\n\n\t\t\t\tswitch ( uniform.type ) {\n\n\t\t\t\t\tcase 't':\n\t\t\t\t\t\tmaterial.uniforms[ name ].value = getTexture( uniform.value );\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'c':\n\t\t\t\t\t\tmaterial.uniforms[ name ].value = new Color().setHex( uniform.value );\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'v2':\n\t\t\t\t\t\tmaterial.uniforms[ name ].value = new Vector2().fromArray( uniform.value );\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'v3':\n\t\t\t\t\t\tmaterial.uniforms[ name ].value = new Vector3().fromArray( uniform.value );\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'v4':\n\t\t\t\t\t\tmaterial.uniforms[ name ].value = new Vector4().fromArray( uniform.value );\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'm3':\n\t\t\t\t\t\tmaterial.uniforms[ name ].value = new Matrix3().fromArray( uniform.value );\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'm4':\n\t\t\t\t\t\tmaterial.uniforms[ name ].value = new Matrix4().fromArray( uniform.value );\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tdefault:\n\t\t\t\t\t\tmaterial.uniforms[ name ].value = uniform.value;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( json.defines !== undefined ) material.defines = json.defines;\n\t\tif ( json.vertexShader !== undefined ) material.vertexShader = json.vertexShader;\n\t\tif ( json.fragmentShader !== undefined ) material.fragmentShader = json.fragmentShader;\n\n\t\tif ( json.extensions !== undefined ) {\n\n\t\t\tfor ( const key in json.extensions ) {\n\n\t\t\t\tmaterial.extensions[ key ] = json.extensions[ key ];\n\n\t\t\t}\n\n\t\t}\n\n\t\t// Deprecated\n\n\t\tif ( json.shading !== undefined ) material.flatShading = json.shading === 1; // THREE.FlatShading\n\n\t\t// for PointsMaterial\n\n\t\tif ( json.size !== undefined ) material.size = json.size;\n\t\tif ( json.sizeAttenuation !== undefined ) material.sizeAttenuation = json.sizeAttenuation;\n\n\t\t// maps\n\n\t\tif ( json.map !== undefined ) material.map = getTexture( json.map );\n\t\tif ( json.matcap !== undefined ) material.matcap = getTexture( json.matcap );\n\n\t\tif ( json.alphaMap !== undefined ) material.alphaMap = getTexture( json.alphaMap );\n\n\t\tif ( json.bumpMap !== undefined ) material.bumpMap = getTexture( json.bumpMap );\n\t\tif ( json.bumpScale !== undefined ) material.bumpScale = json.bumpScale;\n\n\t\tif ( json.normalMap !== undefined ) material.normalMap = getTexture( json.normalMap );\n\t\tif ( json.normalMapType !== undefined ) material.normalMapType = json.normalMapType;\n\t\tif ( json.normalScale !== undefined ) {\n\n\t\t\tlet normalScale = json.normalScale;\n\n\t\t\tif ( Array.isArray( normalScale ) === false ) {\n\n\t\t\t\t// Blender exporter used to export a scalar. See #7459\n\n\t\t\t\tnormalScale = [ normalScale, normalScale ];\n\n\t\t\t}\n\n\t\t\tmaterial.normalScale = new Vector2().fromArray( normalScale );\n\n\t\t}\n\n\t\tif ( json.displacementMap !== undefined ) material.displacementMap = getTexture( json.displacementMap );\n\t\tif ( json.displacementScale !== undefined ) material.displacementScale = json.displacementScale;\n\t\tif ( json.displacementBias !== undefined ) material.displacementBias = json.displacementBias;\n\n\t\tif ( json.roughnessMap !== undefined ) material.roughnessMap = getTexture( json.roughnessMap );\n\t\tif ( json.metalnessMap !== undefined ) material.metalnessMap = getTexture( json.metalnessMap );\n\n\t\tif ( json.emissiveMap !== undefined ) material.emissiveMap = getTexture( json.emissiveMap );\n\t\tif ( json.emissiveIntensity !== undefined ) material.emissiveIntensity = json.emissiveIntensity;\n\n\t\tif ( json.specularMap !== undefined ) material.specularMap = getTexture( json.specularMap );\n\n\t\tif ( json.envMap !== undefined ) material.envMap = getTexture( json.envMap );\n\t\tif ( json.envMapIntensity !== undefined ) material.envMapIntensity = json.envMapIntensity;\n\n\t\tif ( json.reflectivity !== undefined ) material.reflectivity = json.reflectivity;\n\t\tif ( json.refractionRatio !== undefined ) material.refractionRatio = json.refractionRatio;\n\n\t\tif ( json.lightMap !== undefined ) material.lightMap = getTexture( json.lightMap );\n\t\tif ( json.lightMapIntensity !== undefined ) material.lightMapIntensity = json.lightMapIntensity;\n\n\t\tif ( json.aoMap !== undefined ) material.aoMap = getTexture( json.aoMap );\n\t\tif ( json.aoMapIntensity !== undefined ) material.aoMapIntensity = json.aoMapIntensity;\n\n\t\tif ( json.gradientMap !== undefined ) material.gradientMap = getTexture( json.gradientMap );\n\n\t\tif ( json.clearcoatMap !== undefined ) material.clearcoatMap = getTexture( json.clearcoatMap );\n\t\tif ( json.clearcoatRoughnessMap !== undefined ) material.clearcoatRoughnessMap = getTexture( json.clearcoatRoughnessMap );\n\t\tif ( json.clearcoatNormalMap !== undefined ) material.clearcoatNormalMap = getTexture( json.clearcoatNormalMap );\n\t\tif ( json.clearcoatNormalScale !== undefined ) material.clearcoatNormalScale = new Vector2().fromArray( json.clearcoatNormalScale );\n\n\t\tif ( json.transmission !== undefined ) material.transmission = json.transmission;\n\t\tif ( json.transmissionMap !== undefined ) material.transmissionMap = getTexture( json.transmissionMap );\n\n\t\treturn material;\n\n\t},\n\n\tsetTextures: function ( value ) {\n\n\t\tthis.textures = value;\n\t\treturn this;\n\n\t}\n\n} );\n\nconst LoaderUtils = {\n\n\tdecodeText: function ( array ) {\n\n\t\tif ( typeof TextDecoder !== 'undefined' ) {\n\n\t\t\treturn new TextDecoder().decode( array );\n\n\t\t}\n\n\t\t// Avoid the String.fromCharCode.apply(null, array) shortcut, which\n\t\t// throws a \"maximum call stack size exceeded\" error for large arrays.\n\n\t\tlet s = '';\n\n\t\tfor ( let i = 0, il = array.length; i < il; i ++ ) {\n\n\t\t\t// Implicitly assumes little-endian.\n\t\t\ts += String.fromCharCode( array[ i ] );\n\n\t\t}\n\n\t\ttry {\n\n\t\t\t// merges multi-byte utf-8 characters.\n\n\t\t\treturn decodeURIComponent( escape( s ) );\n\n\t\t} catch ( e ) { // see #16358\n\n\t\t\treturn s;\n\n\t\t}\n\n\t},\n\n\textractUrlBase: function ( url ) {\n\n\t\tconst index = url.lastIndexOf( '/' );\n\n\t\tif ( index === - 1 ) return './';\n\n\t\treturn url.substr( 0, index + 1 );\n\n\t}\n\n};\n\nfunction InstancedBufferGeometry() {\n\n\tBufferGeometry.call( this );\n\n\tthis.type = 'InstancedBufferGeometry';\n\tthis.instanceCount = Infinity;\n\n}\n\nInstancedBufferGeometry.prototype = Object.assign( Object.create( BufferGeometry.prototype ), {\n\n\tconstructor: InstancedBufferGeometry,\n\n\tisInstancedBufferGeometry: true,\n\n\tcopy: function ( source ) {\n\n\t\tBufferGeometry.prototype.copy.call( this, source );\n\n\t\tthis.instanceCount = source.instanceCount;\n\n\t\treturn this;\n\n\t},\n\n\tclone: function () {\n\n\t\treturn new this.constructor().copy( this );\n\n\t},\n\n\ttoJSON: function () {\n\n\t\tconst data = BufferGeometry.prototype.toJSON.call( this );\n\n\t\tdata.instanceCount = this.instanceCount;\n\n\t\tdata.isInstancedBufferGeometry = true;\n\n\t\treturn data;\n\n\t}\n\n} );\n\nfunction InstancedBufferAttribute( array, itemSize, normalized, meshPerAttribute ) {\n\n\tif ( typeof ( normalized ) === 'number' ) {\n\n\t\tmeshPerAttribute = normalized;\n\n\t\tnormalized = false;\n\n\t\tconsole.error( 'THREE.InstancedBufferAttribute: The constructor now expects normalized as the third argument.' );\n\n\t}\n\n\tBufferAttribute.call( this, array, itemSize, normalized );\n\n\tthis.meshPerAttribute = meshPerAttribute || 1;\n\n}\n\nInstancedBufferAttribute.prototype = Object.assign( Object.create( BufferAttribute.prototype ), {\n\n\tconstructor: InstancedBufferAttribute,\n\n\tisInstancedBufferAttribute: true,\n\n\tcopy: function ( source ) {\n\n\t\tBufferAttribute.prototype.copy.call( this, source );\n\n\t\tthis.meshPerAttribute = source.meshPerAttribute;\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function ()\t{\n\n\t\tconst data = BufferAttribute.prototype.toJSON.call( this );\n\n\t\tdata.meshPerAttribute = this.meshPerAttribute;\n\n\t\tdata.isInstancedBufferAttribute = true;\n\n\t\treturn data;\n\n\t}\n\n} );\n\nfunction BufferGeometryLoader( manager ) {\n\n\tLoader.call( this, manager );\n\n}\n\nBufferGeometryLoader.prototype = Object.assign( Object.create( Loader.prototype ), {\n\n\tconstructor: BufferGeometryLoader,\n\n\tload: function ( url, onLoad, onProgress, onError ) {\n\n\t\tconst scope = this;\n\n\t\tconst loader = new FileLoader( scope.manager );\n\t\tloader.setPath( scope.path );\n\t\tloader.setRequestHeader( scope.requestHeader );\n\t\tloader.setWithCredentials( scope.withCredentials );\n\t\tloader.load( url, function ( text ) {\n\n\t\t\ttry {\n\n\t\t\t\tonLoad( scope.parse( JSON.parse( text ) ) );\n\n\t\t\t} catch ( e ) {\n\n\t\t\t\tif ( onError ) {\n\n\t\t\t\t\tonError( e );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.error( e );\n\n\t\t\t\t}\n\n\t\t\t\tscope.manager.itemError( url );\n\n\t\t\t}\n\n\t\t}, onProgress, onError );\n\n\t},\n\n\tparse: function ( json ) {\n\n\t\tconst interleavedBufferMap = {};\n\t\tconst arrayBufferMap = {};\n\n\t\tfunction getInterleavedBuffer( json, uuid ) {\n\n\t\t\tif ( interleavedBufferMap[ uuid ] !== undefined ) return interleavedBufferMap[ uuid ];\n\n\t\t\tconst interleavedBuffers = json.interleavedBuffers;\n\t\t\tconst interleavedBuffer = interleavedBuffers[ uuid ];\n\n\t\t\tconst buffer = getArrayBuffer( json, interleavedBuffer.buffer );\n\n\t\t\tconst array = getTypedArray( interleavedBuffer.type, buffer );\n\t\t\tconst ib = new InterleavedBuffer( array, interleavedBuffer.stride );\n\t\t\tib.uuid = interleavedBuffer.uuid;\n\n\t\t\tinterleavedBufferMap[ uuid ] = ib;\n\n\t\t\treturn ib;\n\n\t\t}\n\n\t\tfunction getArrayBuffer( json, uuid ) {\n\n\t\t\tif ( arrayBufferMap[ uuid ] !== undefined ) return arrayBufferMap[ uuid ];\n\n\t\t\tconst arrayBuffers = json.arrayBuffers;\n\t\t\tconst arrayBuffer = arrayBuffers[ uuid ];\n\n\t\t\tconst ab = new Uint32Array( arrayBuffer ).buffer;\n\n\t\t\tarrayBufferMap[ uuid ] = ab;\n\n\t\t\treturn ab;\n\n\t\t}\n\n\t\tconst geometry = json.isInstancedBufferGeometry ? new InstancedBufferGeometry() : new BufferGeometry();\n\n\t\tconst index = json.data.index;\n\n\t\tif ( index !== undefined ) {\n\n\t\t\tconst typedArray = getTypedArray( index.type, index.array );\n\t\t\tgeometry.setIndex( new BufferAttribute( typedArray, 1 ) );\n\n\t\t}\n\n\t\tconst attributes = json.data.attributes;\n\n\t\tfor ( const key in attributes ) {\n\n\t\t\tconst attribute = attributes[ key ];\n\t\t\tlet bufferAttribute;\n\n\t\t\tif ( attribute.isInterleavedBufferAttribute ) {\n\n\t\t\t\tconst interleavedBuffer = getInterleavedBuffer( json.data, attribute.data );\n\t\t\t\tbufferAttribute = new InterleavedBufferAttribute( interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized );\n\n\t\t\t} else {\n\n\t\t\t\tconst typedArray = getTypedArray( attribute.type, attribute.array );\n\t\t\t\tconst bufferAttributeConstr = attribute.isInstancedBufferAttribute ? InstancedBufferAttribute : BufferAttribute;\n\t\t\t\tbufferAttribute = new bufferAttributeConstr( typedArray, attribute.itemSize, attribute.normalized );\n\n\t\t\t}\n\n\t\t\tif ( attribute.name !== undefined ) bufferAttribute.name = attribute.name;\n\t\t\tgeometry.setAttribute( key, bufferAttribute );\n\n\t\t}\n\n\t\tconst morphAttributes = json.data.morphAttributes;\n\n\t\tif ( morphAttributes ) {\n\n\t\t\tfor ( const key in morphAttributes ) {\n\n\t\t\t\tconst attributeArray = morphAttributes[ key ];\n\n\t\t\t\tconst array = [];\n\n\t\t\t\tfor ( let i = 0, il = attributeArray.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst attribute = attributeArray[ i ];\n\t\t\t\t\tlet bufferAttribute;\n\n\t\t\t\t\tif ( attribute.isInterleavedBufferAttribute ) {\n\n\t\t\t\t\t\tconst interleavedBuffer = getInterleavedBuffer( json.data, attribute.data );\n\t\t\t\t\t\tbufferAttribute = new InterleavedBufferAttribute( interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tconst typedArray = getTypedArray( attribute.type, attribute.array );\n\t\t\t\t\t\tbufferAttribute = new BufferAttribute( typedArray, attribute.itemSize, attribute.normalized );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( attribute.name !== undefined ) bufferAttribute.name = attribute.name;\n\t\t\t\t\tarray.push( bufferAttribute );\n\n\t\t\t\t}\n\n\t\t\t\tgeometry.morphAttributes[ key ] = array;\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst morphTargetsRelative = json.data.morphTargetsRelative;\n\n\t\tif ( morphTargetsRelative ) {\n\n\t\t\tgeometry.morphTargetsRelative = true;\n\n\t\t}\n\n\t\tconst groups = json.data.groups || json.data.drawcalls || json.data.offsets;\n\n\t\tif ( groups !== undefined ) {\n\n\t\t\tfor ( let i = 0, n = groups.length; i !== n; ++ i ) {\n\n\t\t\t\tconst group = groups[ i ];\n\n\t\t\t\tgeometry.addGroup( group.start, group.count, group.materialIndex );\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst boundingSphere = json.data.boundingSphere;\n\n\t\tif ( boundingSphere !== undefined ) {\n\n\t\t\tconst center = new Vector3();\n\n\t\t\tif ( boundingSphere.center !== undefined ) {\n\n\t\t\t\tcenter.fromArray( boundingSphere.center );\n\n\t\t\t}\n\n\t\t\tgeometry.boundingSphere = new Sphere( center, boundingSphere.radius );\n\n\t\t}\n\n\t\tif ( json.name ) geometry.name = json.name;\n\t\tif ( json.userData ) geometry.userData = json.userData;\n\n\t\treturn geometry;\n\n\t}\n\n} );\n\nclass ObjectLoader extends Loader {\n\n\tconstructor( manager ) {\n\n\t\tsuper( manager );\n\n\t}\n\n\tload( url, onLoad, onProgress, onError ) {\n\n\t\tconst scope = this;\n\n\t\tconst path = ( this.path === '' ) ? LoaderUtils.extractUrlBase( url ) : this.path;\n\t\tthis.resourcePath = this.resourcePath || path;\n\n\t\tconst loader = new FileLoader( this.manager );\n\t\tloader.setPath( this.path );\n\t\tloader.setRequestHeader( this.requestHeader );\n\t\tloader.setWithCredentials( this.withCredentials );\n\t\tloader.load( url, function ( text ) {\n\n\t\t\tlet json = null;\n\n\t\t\ttry {\n\n\t\t\t\tjson = JSON.parse( text );\n\n\t\t\t} catch ( error ) {\n\n\t\t\t\tif ( onError !== undefined ) onError( error );\n\n\t\t\t\tconsole.error( 'THREE:ObjectLoader: Can\\'t parse ' + url + '.', error.message );\n\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t\tconst metadata = json.metadata;\n\n\t\t\tif ( metadata === undefined || metadata.type === undefined || metadata.type.toLowerCase() === 'geometry' ) {\n\n\t\t\t\tconsole.error( 'THREE.ObjectLoader: Can\\'t load ' + url );\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t\tscope.parse( json, onLoad );\n\n\t\t}, onProgress, onError );\n\n\t}\n\n\tparse( json, onLoad ) {\n\n\t\tconst animations = this.parseAnimations( json.animations );\n\t\tconst shapes = this.parseShapes( json.shapes );\n\t\tconst geometries = this.parseGeometries( json.geometries, shapes );\n\n\t\tconst images = this.parseImages( json.images, function () {\n\n\t\t\tif ( onLoad !== undefined ) onLoad( object );\n\n\t\t} );\n\n\t\tconst textures = this.parseTextures( json.textures, images );\n\t\tconst materials = this.parseMaterials( json.materials, textures );\n\n\t\tconst object = this.parseObject( json.object, geometries, materials, animations );\n\t\tconst skeletons = this.parseSkeletons( json.skeletons, object );\n\n\t\tthis.bindSkeletons( object, skeletons );\n\n\t\t//\n\n\t\tif ( onLoad !== undefined ) {\n\n\t\t\tlet hasImages = false;\n\n\t\t\tfor ( const uuid in images ) {\n\n\t\t\t\tif ( images[ uuid ] instanceof HTMLImageElement ) {\n\n\t\t\t\t\thasImages = true;\n\t\t\t\t\tbreak;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( hasImages === false ) onLoad( object );\n\n\t\t}\n\n\t\treturn object;\n\n\t}\n\n\tparseShapes( json ) {\n\n\t\tconst shapes = {};\n\n\t\tif ( json !== undefined ) {\n\n\t\t\tfor ( let i = 0, l = json.length; i < l; i ++ ) {\n\n\t\t\t\tconst shape = new Shape().fromJSON( json[ i ] );\n\n\t\t\t\tshapes[ shape.uuid ] = shape;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn shapes;\n\n\t}\n\n\tparseSkeletons( json, object ) {\n\n\t\tconst skeletons = {};\n\t\tconst bones = {};\n\n\t\t// generate bone lookup table\n\n\t\tobject.traverse( function ( child ) {\n\n\t\t\tif ( child.isBone ) bones[ child.uuid ] = child;\n\n\t\t} );\n\n\t\t// create skeletons\n\n\t\tif ( json !== undefined ) {\n\n\t\t\tfor ( let i = 0, l = json.length; i < l; i ++ ) {\n\n\t\t\t\tconst skeleton = new Skeleton().fromJSON( json[ i ], bones );\n\n\t\t\t\tskeletons[ skeleton.uuid ] = skeleton;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn skeletons;\n\n\t}\n\n\tparseGeometries( json, shapes ) {\n\n\t\tconst geometries = {};\n\t\tlet geometryShapes;\n\n\t\tif ( json !== undefined ) {\n\n\t\t\tconst bufferGeometryLoader = new BufferGeometryLoader();\n\n\t\t\tfor ( let i = 0, l = json.length; i < l; i ++ ) {\n\n\t\t\t\tlet geometry;\n\t\t\t\tconst data = json[ i ];\n\n\t\t\t\tswitch ( data.type ) {\n\n\t\t\t\t\tcase 'PlaneGeometry':\n\t\t\t\t\tcase 'PlaneBufferGeometry':\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tdata.width,\n\t\t\t\t\t\t\tdata.height,\n\t\t\t\t\t\t\tdata.widthSegments,\n\t\t\t\t\t\t\tdata.heightSegments\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'BoxGeometry':\n\t\t\t\t\tcase 'BoxBufferGeometry':\n\t\t\t\t\tcase 'CubeGeometry': // backwards compatible\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tdata.width,\n\t\t\t\t\t\t\tdata.height,\n\t\t\t\t\t\t\tdata.depth,\n\t\t\t\t\t\t\tdata.widthSegments,\n\t\t\t\t\t\t\tdata.heightSegments,\n\t\t\t\t\t\t\tdata.depthSegments\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'CircleGeometry':\n\t\t\t\t\tcase 'CircleBufferGeometry':\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tdata.radius,\n\t\t\t\t\t\t\tdata.segments,\n\t\t\t\t\t\t\tdata.thetaStart,\n\t\t\t\t\t\t\tdata.thetaLength\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'CylinderGeometry':\n\t\t\t\t\tcase 'CylinderBufferGeometry':\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tdata.radiusTop,\n\t\t\t\t\t\t\tdata.radiusBottom,\n\t\t\t\t\t\t\tdata.height,\n\t\t\t\t\t\t\tdata.radialSegments,\n\t\t\t\t\t\t\tdata.heightSegments,\n\t\t\t\t\t\t\tdata.openEnded,\n\t\t\t\t\t\t\tdata.thetaStart,\n\t\t\t\t\t\t\tdata.thetaLength\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'ConeGeometry':\n\t\t\t\t\tcase 'ConeBufferGeometry':\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tdata.radius,\n\t\t\t\t\t\t\tdata.height,\n\t\t\t\t\t\t\tdata.radialSegments,\n\t\t\t\t\t\t\tdata.heightSegments,\n\t\t\t\t\t\t\tdata.openEnded,\n\t\t\t\t\t\t\tdata.thetaStart,\n\t\t\t\t\t\t\tdata.thetaLength\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'SphereGeometry':\n\t\t\t\t\tcase 'SphereBufferGeometry':\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tdata.radius,\n\t\t\t\t\t\t\tdata.widthSegments,\n\t\t\t\t\t\t\tdata.heightSegments,\n\t\t\t\t\t\t\tdata.phiStart,\n\t\t\t\t\t\t\tdata.phiLength,\n\t\t\t\t\t\t\tdata.thetaStart,\n\t\t\t\t\t\t\tdata.thetaLength\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'DodecahedronGeometry':\n\t\t\t\t\tcase 'DodecahedronBufferGeometry':\n\t\t\t\t\tcase 'IcosahedronGeometry':\n\t\t\t\t\tcase 'IcosahedronBufferGeometry':\n\t\t\t\t\tcase 'OctahedronGeometry':\n\t\t\t\t\tcase 'OctahedronBufferGeometry':\n\t\t\t\t\tcase 'TetrahedronGeometry':\n\t\t\t\t\tcase 'TetrahedronBufferGeometry':\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tdata.radius,\n\t\t\t\t\t\t\tdata.detail\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'RingGeometry':\n\t\t\t\t\tcase 'RingBufferGeometry':\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tdata.innerRadius,\n\t\t\t\t\t\t\tdata.outerRadius,\n\t\t\t\t\t\t\tdata.thetaSegments,\n\t\t\t\t\t\t\tdata.phiSegments,\n\t\t\t\t\t\t\tdata.thetaStart,\n\t\t\t\t\t\t\tdata.thetaLength\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'TorusGeometry':\n\t\t\t\t\tcase 'TorusBufferGeometry':\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tdata.radius,\n\t\t\t\t\t\t\tdata.tube,\n\t\t\t\t\t\t\tdata.radialSegments,\n\t\t\t\t\t\t\tdata.tubularSegments,\n\t\t\t\t\t\t\tdata.arc\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'TorusKnotGeometry':\n\t\t\t\t\tcase 'TorusKnotBufferGeometry':\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tdata.radius,\n\t\t\t\t\t\t\tdata.tube,\n\t\t\t\t\t\t\tdata.tubularSegments,\n\t\t\t\t\t\t\tdata.radialSegments,\n\t\t\t\t\t\t\tdata.p,\n\t\t\t\t\t\t\tdata.q\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'TubeGeometry':\n\t\t\t\t\tcase 'TubeBufferGeometry':\n\n\t\t\t\t\t\t// This only works for built-in curves (e.g. CatmullRomCurve3).\n\t\t\t\t\t\t// User defined curves or instances of CurvePath will not be deserialized.\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tnew Curves[ data.path.type ]().fromJSON( data.path ),\n\t\t\t\t\t\t\tdata.tubularSegments,\n\t\t\t\t\t\t\tdata.radius,\n\t\t\t\t\t\t\tdata.radialSegments,\n\t\t\t\t\t\t\tdata.closed\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'LatheGeometry':\n\t\t\t\t\tcase 'LatheBufferGeometry':\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tdata.points,\n\t\t\t\t\t\t\tdata.segments,\n\t\t\t\t\t\t\tdata.phiStart,\n\t\t\t\t\t\t\tdata.phiLength\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'PolyhedronGeometry':\n\t\t\t\t\tcase 'PolyhedronBufferGeometry':\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tdata.vertices,\n\t\t\t\t\t\t\tdata.indices,\n\t\t\t\t\t\t\tdata.radius,\n\t\t\t\t\t\t\tdata.details\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'ShapeGeometry':\n\t\t\t\t\tcase 'ShapeBufferGeometry':\n\n\t\t\t\t\t\tgeometryShapes = [];\n\n\t\t\t\t\t\tfor ( let j = 0, jl = data.shapes.length; j < jl; j ++ ) {\n\n\t\t\t\t\t\t\tconst shape = shapes[ data.shapes[ j ] ];\n\n\t\t\t\t\t\t\tgeometryShapes.push( shape );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tgeometryShapes,\n\t\t\t\t\t\t\tdata.curveSegments\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\n\t\t\t\t\tcase 'ExtrudeGeometry':\n\t\t\t\t\tcase 'ExtrudeBufferGeometry':\n\n\t\t\t\t\t\tgeometryShapes = [];\n\n\t\t\t\t\t\tfor ( let j = 0, jl = data.shapes.length; j < jl; j ++ ) {\n\n\t\t\t\t\t\t\tconst shape = shapes[ data.shapes[ j ] ];\n\n\t\t\t\t\t\t\tgeometryShapes.push( shape );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tconst extrudePath = data.options.extrudePath;\n\n\t\t\t\t\t\tif ( extrudePath !== undefined ) {\n\n\t\t\t\t\t\t\tdata.options.extrudePath = new Curves[ extrudePath.type ]().fromJSON( extrudePath );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tgeometryShapes,\n\t\t\t\t\t\t\tdata.options\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'BufferGeometry':\n\t\t\t\t\tcase 'InstancedBufferGeometry':\n\n\t\t\t\t\t\tgeometry = bufferGeometryLoader.parse( data );\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'Geometry':\n\n\t\t\t\t\t\tconsole.error( 'THREE.ObjectLoader: Loading \"Geometry\" is not supported anymore.' );\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tdefault:\n\n\t\t\t\t\t\tconsole.warn( 'THREE.ObjectLoader: Unsupported geometry type \"' + data.type + '\"' );\n\n\t\t\t\t\t\tcontinue;\n\n\t\t\t\t}\n\n\t\t\t\tgeometry.uuid = data.uuid;\n\n\t\t\t\tif ( data.name !== undefined ) geometry.name = data.name;\n\t\t\t\tif ( geometry.isBufferGeometry === true && data.userData !== undefined ) geometry.userData = data.userData;\n\n\t\t\t\tgeometries[ data.uuid ] = geometry;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn geometries;\n\n\t}\n\n\tparseMaterials( json, textures ) {\n\n\t\tconst cache = {}; // MultiMaterial\n\t\tconst materials = {};\n\n\t\tif ( json !== undefined ) {\n\n\t\t\tconst loader = new MaterialLoader();\n\t\t\tloader.setTextures( textures );\n\n\t\t\tfor ( let i = 0, l = json.length; i < l; i ++ ) {\n\n\t\t\t\tconst data = json[ i ];\n\n\t\t\t\tif ( data.type === 'MultiMaterial' ) {\n\n\t\t\t\t\t// Deprecated\n\n\t\t\t\t\tconst array = [];\n\n\t\t\t\t\tfor ( let j = 0; j < data.materials.length; j ++ ) {\n\n\t\t\t\t\t\tconst material = data.materials[ j ];\n\n\t\t\t\t\t\tif ( cache[ material.uuid ] === undefined ) {\n\n\t\t\t\t\t\t\tcache[ material.uuid ] = loader.parse( material );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tarray.push( cache[ material.uuid ] );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tmaterials[ data.uuid ] = array;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tif ( cache[ data.uuid ] === undefined ) {\n\n\t\t\t\t\t\tcache[ data.uuid ] = loader.parse( data );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tmaterials[ data.uuid ] = cache[ data.uuid ];\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn materials;\n\n\t}\n\n\tparseAnimations( json ) {\n\n\t\tconst animations = {};\n\n\t\tif ( json !== undefined ) {\n\n\t\t\tfor ( let i = 0; i < json.length; i ++ ) {\n\n\t\t\t\tconst data = json[ i ];\n\n\t\t\t\tconst clip = AnimationClip.parse( data );\n\n\t\t\t\tanimations[ clip.uuid ] = clip;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn animations;\n\n\t}\n\n\tparseImages( json, onLoad ) {\n\n\t\tconst scope = this;\n\t\tconst images = {};\n\n\t\tlet loader;\n\n\t\tfunction loadImage( url ) {\n\n\t\t\tscope.manager.itemStart( url );\n\n\t\t\treturn loader.load( url, function () {\n\n\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t}, undefined, function () {\n\n\t\t\t\tscope.manager.itemError( url );\n\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t} );\n\n\t\t}\n\n\t\tfunction deserializeImage( image ) {\n\n\t\t\tif ( typeof image === 'string' ) {\n\n\t\t\t\tconst url = image;\n\n\t\t\t\tconst path = /^(\\/\\/)|([a-z]+:(\\/\\/)?)/i.test( url ) ? url : scope.resourcePath + url;\n\n\t\t\t\treturn loadImage( path );\n\n\t\t\t} else {\n\n\t\t\t\tif ( image.data ) {\n\n\t\t\t\t\treturn {\n\t\t\t\t\t\tdata: getTypedArray( image.type, image.data ),\n\t\t\t\t\t\twidth: image.width,\n\t\t\t\t\t\theight: image.height\n\t\t\t\t\t};\n\n\t\t\t\t} else {\n\n\t\t\t\t\treturn null;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( json !== undefined && json.length > 0 ) {\n\n\t\t\tconst manager = new LoadingManager( onLoad );\n\n\t\t\tloader = new ImageLoader( manager );\n\t\t\tloader.setCrossOrigin( this.crossOrigin );\n\n\t\t\tfor ( let i = 0, il = json.length; i < il; i ++ ) {\n\n\t\t\t\tconst image = json[ i ];\n\t\t\t\tconst url = image.url;\n\n\t\t\t\tif ( Array.isArray( url ) ) {\n\n\t\t\t\t\t// load array of images e.g CubeTexture\n\n\t\t\t\t\timages[ image.uuid ] = [];\n\n\t\t\t\t\tfor ( let j = 0, jl = url.length; j < jl; j ++ ) {\n\n\t\t\t\t\t\tconst currentUrl = url[ j ];\n\n\t\t\t\t\t\tconst deserializedImage = deserializeImage( currentUrl );\n\n\t\t\t\t\t\tif ( deserializedImage !== null ) {\n\n\t\t\t\t\t\t\tif ( deserializedImage instanceof HTMLImageElement ) {\n\n\t\t\t\t\t\t\t\timages[ image.uuid ].push( deserializedImage );\n\n\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\t// special case: handle array of data textures for cube textures\n\n\t\t\t\t\t\t\t\timages[ image.uuid ].push( new DataTexture( deserializedImage.data, deserializedImage.width, deserializedImage.height ) );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// load single image\n\n\t\t\t\t\tconst deserializedImage = deserializeImage( image.url );\n\n\t\t\t\t\tif ( deserializedImage !== null ) {\n\n\t\t\t\t\t\timages[ image.uuid ] = deserializedImage;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn images;\n\n\t}\n\n\tparseTextures( json, images ) {\n\n\t\tfunction parseConstant( value, type ) {\n\n\t\t\tif ( typeof value === 'number' ) return value;\n\n\t\t\tconsole.warn( 'THREE.ObjectLoader.parseTexture: Constant should be in numeric form.', value );\n\n\t\t\treturn type[ value ];\n\n\t\t}\n\n\t\tconst textures = {};\n\n\t\tif ( json !== undefined ) {\n\n\t\t\tfor ( let i = 0, l = json.length; i < l; i ++ ) {\n\n\t\t\t\tconst data = json[ i ];\n\n\t\t\t\tif ( data.image === undefined ) {\n\n\t\t\t\t\tconsole.warn( 'THREE.ObjectLoader: No \"image\" specified for', data.uuid );\n\n\t\t\t\t}\n\n\t\t\t\tif ( images[ data.image ] === undefined ) {\n\n\t\t\t\t\tconsole.warn( 'THREE.ObjectLoader: Undefined image', data.image );\n\n\t\t\t\t}\n\n\t\t\t\tlet texture;\n\t\t\t\tconst image = images[ data.image ];\n\n\t\t\t\tif ( Array.isArray( image ) ) {\n\n\t\t\t\t\ttexture = new CubeTexture( image );\n\n\t\t\t\t\tif ( image.length === 6 ) texture.needsUpdate = true;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tif ( image && image.data ) {\n\n\t\t\t\t\t\ttexture = new DataTexture( image.data, image.width, image.height );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\ttexture = new Texture( image );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( image ) texture.needsUpdate = true; // textures can have undefined image data\n\n\t\t\t\t}\n\n\t\t\t\ttexture.uuid = data.uuid;\n\n\t\t\t\tif ( data.name !== undefined ) texture.name = data.name;\n\n\t\t\t\tif ( data.mapping !== undefined ) texture.mapping = parseConstant( data.mapping, TEXTURE_MAPPING );\n\n\t\t\t\tif ( data.offset !== undefined ) texture.offset.fromArray( data.offset );\n\t\t\t\tif ( data.repeat !== undefined ) texture.repeat.fromArray( data.repeat );\n\t\t\t\tif ( data.center !== undefined ) texture.center.fromArray( data.center );\n\t\t\t\tif ( data.rotation !== undefined ) texture.rotation = data.rotation;\n\n\t\t\t\tif ( data.wrap !== undefined ) {\n\n\t\t\t\t\ttexture.wrapS = parseConstant( data.wrap[ 0 ], TEXTURE_WRAPPING );\n\t\t\t\t\ttexture.wrapT = parseConstant( data.wrap[ 1 ], TEXTURE_WRAPPING );\n\n\t\t\t\t}\n\n\t\t\t\tif ( data.format !== undefined ) texture.format = data.format;\n\t\t\t\tif ( data.type !== undefined ) texture.type = data.type;\n\t\t\t\tif ( data.encoding !== undefined ) texture.encoding = data.encoding;\n\n\t\t\t\tif ( data.minFilter !== undefined ) texture.minFilter = parseConstant( data.minFilter, TEXTURE_FILTER );\n\t\t\t\tif ( data.magFilter !== undefined ) texture.magFilter = parseConstant( data.magFilter, TEXTURE_FILTER );\n\t\t\t\tif ( data.anisotropy !== undefined ) texture.anisotropy = data.anisotropy;\n\n\t\t\t\tif ( data.flipY !== undefined ) texture.flipY = data.flipY;\n\n\t\t\t\tif ( data.premultiplyAlpha !== undefined ) texture.premultiplyAlpha = data.premultiplyAlpha;\n\t\t\t\tif ( data.unpackAlignment !== undefined ) texture.unpackAlignment = data.unpackAlignment;\n\n\t\t\t\ttextures[ data.uuid ] = texture;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn textures;\n\n\t}\n\n\tparseObject( data, geometries, materials, animations ) {\n\n\t\tlet object;\n\n\t\tfunction getGeometry( name ) {\n\n\t\t\tif ( geometries[ name ] === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.ObjectLoader: Undefined geometry', name );\n\n\t\t\t}\n\n\t\t\treturn geometries[ name ];\n\n\t\t}\n\n\t\tfunction getMaterial( name ) {\n\n\t\t\tif ( name === undefined ) return undefined;\n\n\t\t\tif ( Array.isArray( name ) ) {\n\n\t\t\t\tconst array = [];\n\n\t\t\t\tfor ( let i = 0, l = name.length; i < l; i ++ ) {\n\n\t\t\t\t\tconst uuid = name[ i ];\n\n\t\t\t\t\tif ( materials[ uuid ] === undefined ) {\n\n\t\t\t\t\t\tconsole.warn( 'THREE.ObjectLoader: Undefined material', uuid );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tarray.push( materials[ uuid ] );\n\n\t\t\t\t}\n\n\t\t\t\treturn array;\n\n\t\t\t}\n\n\t\t\tif ( materials[ name ] === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.ObjectLoader: Undefined material', name );\n\n\t\t\t}\n\n\t\t\treturn materials[ name ];\n\n\t\t}\n\n\t\tlet geometry, material;\n\n\t\tswitch ( data.type ) {\n\n\t\t\tcase 'Scene':\n\n\t\t\t\tobject = new Scene();\n\n\t\t\t\tif ( data.background !== undefined ) {\n\n\t\t\t\t\tif ( Number.isInteger( data.background ) ) {\n\n\t\t\t\t\t\tobject.background = new Color( data.background );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tif ( data.fog !== undefined ) {\n\n\t\t\t\t\tif ( data.fog.type === 'Fog' ) {\n\n\t\t\t\t\t\tobject.fog = new Fog( data.fog.color, data.fog.near, data.fog.far );\n\n\t\t\t\t\t} else if ( data.fog.type === 'FogExp2' ) {\n\n\t\t\t\t\t\tobject.fog = new FogExp2( data.fog.color, data.fog.density );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'PerspectiveCamera':\n\n\t\t\t\tobject = new PerspectiveCamera( data.fov, data.aspect, data.near, data.far );\n\n\t\t\t\tif ( data.focus !== undefined ) object.focus = data.focus;\n\t\t\t\tif ( data.zoom !== undefined ) object.zoom = data.zoom;\n\t\t\t\tif ( data.filmGauge !== undefined ) object.filmGauge = data.filmGauge;\n\t\t\t\tif ( data.filmOffset !== undefined ) object.filmOffset = data.filmOffset;\n\t\t\t\tif ( data.view !== undefined ) object.view = Object.assign( {}, data.view );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'OrthographicCamera':\n\n\t\t\t\tobject = new OrthographicCamera( data.left, data.right, data.top, data.bottom, data.near, data.far );\n\n\t\t\t\tif ( data.zoom !== undefined ) object.zoom = data.zoom;\n\t\t\t\tif ( data.view !== undefined ) object.view = Object.assign( {}, data.view );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'AmbientLight':\n\n\t\t\t\tobject = new AmbientLight( data.color, data.intensity );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'DirectionalLight':\n\n\t\t\t\tobject = new DirectionalLight( data.color, data.intensity );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'PointLight':\n\n\t\t\t\tobject = new PointLight( data.color, data.intensity, data.distance, data.decay );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'RectAreaLight':\n\n\t\t\t\tobject = new RectAreaLight( data.color, data.intensity, data.width, data.height );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'SpotLight':\n\n\t\t\t\tobject = new SpotLight( data.color, data.intensity, data.distance, data.angle, data.penumbra, data.decay );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'HemisphereLight':\n\n\t\t\t\tobject = new HemisphereLight( data.color, data.groundColor, data.intensity );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'LightProbe':\n\n\t\t\t\tobject = new LightProbe().fromJSON( data );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'SkinnedMesh':\n\n\t\t\t\tgeometry = getGeometry( data.geometry );\n\t\t\t \tmaterial = getMaterial( data.material );\n\n\t\t\t\tobject = new SkinnedMesh( geometry, material );\n\n\t\t\t\tif ( data.bindMode !== undefined ) object.bindMode = data.bindMode;\n\t\t\t\tif ( data.bindMatrix !== undefined ) object.bindMatrix.fromArray( data.bindMatrix );\n\t\t\t\tif ( data.skeleton !== undefined ) object.skeleton = data.skeleton;\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'Mesh':\n\n\t\t\t\tgeometry = getGeometry( data.geometry );\n\t\t\t\tmaterial = getMaterial( data.material );\n\n\t\t\t\tobject = new Mesh( geometry, material );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'InstancedMesh':\n\n\t\t\t\tgeometry = getGeometry( data.geometry );\n\t\t\t\tmaterial = getMaterial( data.material );\n\t\t\t\tconst count = data.count;\n\t\t\t\tconst instanceMatrix = data.instanceMatrix;\n\n\t\t\t\tobject = new InstancedMesh( geometry, material, count );\n\t\t\t\tobject.instanceMatrix = new BufferAttribute( new Float32Array( instanceMatrix.array ), 16 );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'LOD':\n\n\t\t\t\tobject = new LOD();\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'Line':\n\n\t\t\t\tobject = new Line( getGeometry( data.geometry ), getMaterial( data.material ) );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'LineLoop':\n\n\t\t\t\tobject = new LineLoop( getGeometry( data.geometry ), getMaterial( data.material ) );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'LineSegments':\n\n\t\t\t\tobject = new LineSegments( getGeometry( data.geometry ), getMaterial( data.material ) );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'PointCloud':\n\t\t\tcase 'Points':\n\n\t\t\t\tobject = new Points( getGeometry( data.geometry ), getMaterial( data.material ) );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'Sprite':\n\n\t\t\t\tobject = new Sprite( getMaterial( data.material ) );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'Group':\n\n\t\t\t\tobject = new Group();\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'Bone':\n\n\t\t\t\tobject = new Bone();\n\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\n\t\t\t\tobject = new Object3D();\n\n\t\t}\n\n\t\tobject.uuid = data.uuid;\n\n\t\tif ( data.name !== undefined ) object.name = data.name;\n\n\t\tif ( data.matrix !== undefined ) {\n\n\t\t\tobject.matrix.fromArray( data.matrix );\n\n\t\t\tif ( data.matrixAutoUpdate !== undefined ) object.matrixAutoUpdate = data.matrixAutoUpdate;\n\t\t\tif ( object.matrixAutoUpdate ) object.matrix.decompose( object.position, object.quaternion, object.scale );\n\n\t\t} else {\n\n\t\t\tif ( data.position !== undefined ) object.position.fromArray( data.position );\n\t\t\tif ( data.rotation !== undefined ) object.rotation.fromArray( data.rotation );\n\t\t\tif ( data.quaternion !== undefined ) object.quaternion.fromArray( data.quaternion );\n\t\t\tif ( data.scale !== undefined ) object.scale.fromArray( data.scale );\n\n\t\t}\n\n\t\tif ( data.castShadow !== undefined ) object.castShadow = data.castShadow;\n\t\tif ( data.receiveShadow !== undefined ) object.receiveShadow = data.receiveShadow;\n\n\t\tif ( data.shadow ) {\n\n\t\t\tif ( data.shadow.bias !== undefined ) object.shadow.bias = data.shadow.bias;\n\t\t\tif ( data.shadow.normalBias !== undefined ) object.shadow.normalBias = data.shadow.normalBias;\n\t\t\tif ( data.shadow.radius !== undefined ) object.shadow.radius = data.shadow.radius;\n\t\t\tif ( data.shadow.mapSize !== undefined ) object.shadow.mapSize.fromArray( data.shadow.mapSize );\n\t\t\tif ( data.shadow.camera !== undefined ) object.shadow.camera = this.parseObject( data.shadow.camera );\n\n\t\t}\n\n\t\tif ( data.visible !== undefined ) object.visible = data.visible;\n\t\tif ( data.frustumCulled !== undefined ) object.frustumCulled = data.frustumCulled;\n\t\tif ( data.renderOrder !== undefined ) object.renderOrder = data.renderOrder;\n\t\tif ( data.userData !== undefined ) object.userData = data.userData;\n\t\tif ( data.layers !== undefined ) object.layers.mask = data.layers;\n\n\t\tif ( data.children !== undefined ) {\n\n\t\t\tconst children = data.children;\n\n\t\t\tfor ( let i = 0; i < children.length; i ++ ) {\n\n\t\t\t\tobject.add( this.parseObject( children[ i ], geometries, materials, animations ) );\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( data.animations !== undefined ) {\n\n\t\t\tconst objectAnimations = data.animations;\n\n\t\t\tfor ( let i = 0; i < objectAnimations.length; i ++ ) {\n\n\t\t\t\tconst uuid = objectAnimations[ i ];\n\n\t\t\t\tobject.animations.push( animations[ uuid ] );\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( data.type === 'LOD' ) {\n\n\t\t\tif ( data.autoUpdate !== undefined ) object.autoUpdate = data.autoUpdate;\n\n\t\t\tconst levels = data.levels;\n\n\t\t\tfor ( let l = 0; l < levels.length; l ++ ) {\n\n\t\t\t\tconst level = levels[ l ];\n\t\t\t\tconst child = object.getObjectByProperty( 'uuid', level.object );\n\n\t\t\t\tif ( child !== undefined ) {\n\n\t\t\t\t\tobject.addLevel( child, level.distance );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn object;\n\n\t}\n\n\tbindSkeletons( object, skeletons ) {\n\n\t\tif ( Object.keys( skeletons ).length === 0 ) return;\n\n\t\tobject.traverse( function ( child ) {\n\n\t\t\tif ( child.isSkinnedMesh === true && child.skeleton !== undefined ) {\n\n\t\t\t\tconst skeleton = skeletons[ child.skeleton ];\n\n\t\t\t\tif ( skeleton === undefined ) {\n\n\t\t\t\t\tconsole.warn( 'THREE.ObjectLoader: No skeleton found with UUID:', child.skeleton );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tchild.bind( skeleton, child.bindMatrix );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} );\n\n\t}\n\n\t/* DEPRECATED */\n\n\tsetTexturePath( value ) {\n\n\t\tconsole.warn( 'THREE.ObjectLoader: .setTexturePath() has been renamed to .setResourcePath().' );\n\t\treturn this.setResourcePath( value );\n\n\t}\n\n}\n\nconst TEXTURE_MAPPING = {\n\tUVMapping: UVMapping,\n\tCubeReflectionMapping: CubeReflectionMapping,\n\tCubeRefractionMapping: CubeRefractionMapping,\n\tEquirectangularReflectionMapping: EquirectangularReflectionMapping,\n\tEquirectangularRefractionMapping: EquirectangularRefractionMapping,\n\tCubeUVReflectionMapping: CubeUVReflectionMapping,\n\tCubeUVRefractionMapping: CubeUVRefractionMapping\n};\n\nconst TEXTURE_WRAPPING = {\n\tRepeatWrapping: RepeatWrapping,\n\tClampToEdgeWrapping: ClampToEdgeWrapping,\n\tMirroredRepeatWrapping: MirroredRepeatWrapping\n};\n\nconst TEXTURE_FILTER = {\n\tNearestFilter: NearestFilter,\n\tNearestMipmapNearestFilter: NearestMipmapNearestFilter,\n\tNearestMipmapLinearFilter: NearestMipmapLinearFilter,\n\tLinearFilter: LinearFilter,\n\tLinearMipmapNearestFilter: LinearMipmapNearestFilter,\n\tLinearMipmapLinearFilter: LinearMipmapLinearFilter\n};\n\nfunction ImageBitmapLoader( manager ) {\n\n\tif ( typeof createImageBitmap === 'undefined' ) {\n\n\t\tconsole.warn( 'THREE.ImageBitmapLoader: createImageBitmap() not supported.' );\n\n\t}\n\n\tif ( typeof fetch === 'undefined' ) {\n\n\t\tconsole.warn( 'THREE.ImageBitmapLoader: fetch() not supported.' );\n\n\t}\n\n\tLoader.call( this, manager );\n\n\tthis.options = { premultiplyAlpha: 'none' };\n\n}\n\nImageBitmapLoader.prototype = Object.assign( Object.create( Loader.prototype ), {\n\n\tconstructor: ImageBitmapLoader,\n\n\tisImageBitmapLoader: true,\n\n\tsetOptions: function setOptions( options ) {\n\n\t\tthis.options = options;\n\n\t\treturn this;\n\n\t},\n\n\tload: function ( url, onLoad, onProgress, onError ) {\n\n\t\tif ( url === undefined ) url = '';\n\n\t\tif ( this.path !== undefined ) url = this.path + url;\n\n\t\turl = this.manager.resolveURL( url );\n\n\t\tconst scope = this;\n\n\t\tconst cached = Cache.get( url );\n\n\t\tif ( cached !== undefined ) {\n\n\t\t\tscope.manager.itemStart( url );\n\n\t\t\tsetTimeout( function () {\n\n\t\t\t\tif ( onLoad ) onLoad( cached );\n\n\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t}, 0 );\n\n\t\t\treturn cached;\n\n\t\t}\n\n\t\tconst fetchOptions = {};\n\t\tfetchOptions.credentials = ( this.crossOrigin === 'anonymous' ) ? 'same-origin' : 'include';\n\n\t\tfetch( url, fetchOptions ).then( function ( res ) {\n\n\t\t\treturn res.blob();\n\n\t\t} ).then( function ( blob ) {\n\n\t\t\treturn createImageBitmap( blob, scope.options );\n\n\t\t} ).then( function ( imageBitmap ) {\n\n\t\t\tCache.add( url, imageBitmap );\n\n\t\t\tif ( onLoad ) onLoad( imageBitmap );\n\n\t\t\tscope.manager.itemEnd( url );\n\n\t\t} ).catch( function ( e ) {\n\n\t\t\tif ( onError ) onError( e );\n\n\t\t\tscope.manager.itemError( url );\n\t\t\tscope.manager.itemEnd( url );\n\n\t\t} );\n\n\t\tscope.manager.itemStart( url );\n\n\t}\n\n} );\n\nfunction ShapePath() {\n\n\tthis.type = 'ShapePath';\n\n\tthis.color = new Color();\n\n\tthis.subPaths = [];\n\tthis.currentPath = null;\n\n}\n\nObject.assign( ShapePath.prototype, {\n\n\tmoveTo: function ( x, y ) {\n\n\t\tthis.currentPath = new Path();\n\t\tthis.subPaths.push( this.currentPath );\n\t\tthis.currentPath.moveTo( x, y );\n\n\t\treturn this;\n\n\t},\n\n\tlineTo: function ( x, y ) {\n\n\t\tthis.currentPath.lineTo( x, y );\n\n\t\treturn this;\n\n\t},\n\n\tquadraticCurveTo: function ( aCPx, aCPy, aX, aY ) {\n\n\t\tthis.currentPath.quadraticCurveTo( aCPx, aCPy, aX, aY );\n\n\t\treturn this;\n\n\t},\n\n\tbezierCurveTo: function ( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY ) {\n\n\t\tthis.currentPath.bezierCurveTo( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY );\n\n\t\treturn this;\n\n\t},\n\n\tsplineThru: function ( pts ) {\n\n\t\tthis.currentPath.splineThru( pts );\n\n\t\treturn this;\n\n\t},\n\n\ttoShapes: function ( isCCW, noHoles ) {\n\n\t\tfunction toShapesNoHoles( inSubpaths ) {\n\n\t\t\tconst shapes = [];\n\n\t\t\tfor ( let i = 0, l = inSubpaths.length; i < l; i ++ ) {\n\n\t\t\t\tconst tmpPath = inSubpaths[ i ];\n\n\t\t\t\tconst tmpShape = new Shape();\n\t\t\t\ttmpShape.curves = tmpPath.curves;\n\n\t\t\t\tshapes.push( tmpShape );\n\n\t\t\t}\n\n\t\t\treturn shapes;\n\n\t\t}\n\n\t\tfunction isPointInsidePolygon( inPt, inPolygon ) {\n\n\t\t\tconst polyLen = inPolygon.length;\n\n\t\t\t// inPt on polygon contour => immediate success    or\n\t\t\t// toggling of inside/outside at every single! intersection point of an edge\n\t\t\t//  with the horizontal line through inPt, left of inPt\n\t\t\t//  not counting lowerY endpoints of edges and whole edges on that line\n\t\t\tlet inside = false;\n\t\t\tfor ( let p = polyLen - 1, q = 0; q < polyLen; p = q ++ ) {\n\n\t\t\t\tlet edgeLowPt = inPolygon[ p ];\n\t\t\t\tlet edgeHighPt = inPolygon[ q ];\n\n\t\t\t\tlet edgeDx = edgeHighPt.x - edgeLowPt.x;\n\t\t\t\tlet edgeDy = edgeHighPt.y - edgeLowPt.y;\n\n\t\t\t\tif ( Math.abs( edgeDy ) > Number.EPSILON ) {\n\n\t\t\t\t\t// not parallel\n\t\t\t\t\tif ( edgeDy < 0 ) {\n\n\t\t\t\t\t\tedgeLowPt = inPolygon[ q ]; edgeDx = - edgeDx;\n\t\t\t\t\t\tedgeHighPt = inPolygon[ p ]; edgeDy = - edgeDy;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( ( inPt.y < edgeLowPt.y ) || ( inPt.y > edgeHighPt.y ) ) \t\tcontinue;\n\n\t\t\t\t\tif ( inPt.y === edgeLowPt.y ) {\n\n\t\t\t\t\t\tif ( inPt.x === edgeLowPt.x )\t\treturn\ttrue;\t\t// inPt is on contour ?\n\t\t\t\t\t\t// continue;\t\t\t\t// no intersection or edgeLowPt => doesn't count !!!\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tconst perpEdge = edgeDy * ( inPt.x - edgeLowPt.x ) - edgeDx * ( inPt.y - edgeLowPt.y );\n\t\t\t\t\t\tif ( perpEdge === 0 )\t\t\t\treturn\ttrue;\t\t// inPt is on contour ?\n\t\t\t\t\t\tif ( perpEdge < 0 ) \t\t\t\tcontinue;\n\t\t\t\t\t\tinside = ! inside;\t\t// true intersection left of inPt\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// parallel or collinear\n\t\t\t\t\tif ( inPt.y !== edgeLowPt.y ) \t\tcontinue;\t\t\t// parallel\n\t\t\t\t\t// edge lies on the same horizontal line as inPt\n\t\t\t\t\tif ( ( ( edgeHighPt.x <= inPt.x ) && ( inPt.x <= edgeLowPt.x ) ) ||\n\t\t\t\t\t\t ( ( edgeLowPt.x <= inPt.x ) && ( inPt.x <= edgeHighPt.x ) ) )\t\treturn\ttrue;\t// inPt: Point on contour !\n\t\t\t\t\t// continue;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\treturn\tinside;\n\n\t\t}\n\n\t\tconst isClockWise = ShapeUtils.isClockWise;\n\n\t\tconst subPaths = this.subPaths;\n\t\tif ( subPaths.length === 0 ) return [];\n\n\t\tif ( noHoles === true )\treturn\ttoShapesNoHoles( subPaths );\n\n\n\t\tlet solid, tmpPath, tmpShape;\n\t\tconst shapes = [];\n\n\t\tif ( subPaths.length === 1 ) {\n\n\t\t\ttmpPath = subPaths[ 0 ];\n\t\t\ttmpShape = new Shape();\n\t\t\ttmpShape.curves = tmpPath.curves;\n\t\t\tshapes.push( tmpShape );\n\t\t\treturn shapes;\n\n\t\t}\n\n\t\tlet holesFirst = ! isClockWise( subPaths[ 0 ].getPoints() );\n\t\tholesFirst = isCCW ? ! holesFirst : holesFirst;\n\n\t\t// console.log(\"Holes first\", holesFirst);\n\n\t\tconst betterShapeHoles = [];\n\t\tconst newShapes = [];\n\t\tlet newShapeHoles = [];\n\t\tlet mainIdx = 0;\n\t\tlet tmpPoints;\n\n\t\tnewShapes[ mainIdx ] = undefined;\n\t\tnewShapeHoles[ mainIdx ] = [];\n\n\t\tfor ( let i = 0, l = subPaths.length; i < l; i ++ ) {\n\n\t\t\ttmpPath = subPaths[ i ];\n\t\t\ttmpPoints = tmpPath.getPoints();\n\t\t\tsolid = isClockWise( tmpPoints );\n\t\t\tsolid = isCCW ? ! solid : solid;\n\n\t\t\tif ( solid ) {\n\n\t\t\t\tif ( ( ! holesFirst ) && ( newShapes[ mainIdx ] ) )\tmainIdx ++;\n\n\t\t\t\tnewShapes[ mainIdx ] = { s: new Shape(), p: tmpPoints };\n\t\t\t\tnewShapes[ mainIdx ].s.curves = tmpPath.curves;\n\n\t\t\t\tif ( holesFirst )\tmainIdx ++;\n\t\t\t\tnewShapeHoles[ mainIdx ] = [];\n\n\t\t\t\t//console.log('cw', i);\n\n\t\t\t} else {\n\n\t\t\t\tnewShapeHoles[ mainIdx ].push( { h: tmpPath, p: tmpPoints[ 0 ] } );\n\n\t\t\t\t//console.log('ccw', i);\n\n\t\t\t}\n\n\t\t}\n\n\t\t// only Holes? -> probably all Shapes with wrong orientation\n\t\tif ( ! newShapes[ 0 ] )\treturn\ttoShapesNoHoles( subPaths );\n\n\n\t\tif ( newShapes.length > 1 ) {\n\n\t\t\tlet ambiguous = false;\n\t\t\tconst toChange = [];\n\n\t\t\tfor ( let sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx ++ ) {\n\n\t\t\t\tbetterShapeHoles[ sIdx ] = [];\n\n\t\t\t}\n\n\t\t\tfor ( let sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx ++ ) {\n\n\t\t\t\tconst sho = newShapeHoles[ sIdx ];\n\n\t\t\t\tfor ( let hIdx = 0; hIdx < sho.length; hIdx ++ ) {\n\n\t\t\t\t\tconst ho = sho[ hIdx ];\n\t\t\t\t\tlet hole_unassigned = true;\n\n\t\t\t\t\tfor ( let s2Idx = 0; s2Idx < newShapes.length; s2Idx ++ ) {\n\n\t\t\t\t\t\tif ( isPointInsidePolygon( ho.p, newShapes[ s2Idx ].p ) ) {\n\n\t\t\t\t\t\t\tif ( sIdx !== s2Idx )\ttoChange.push( { froms: sIdx, tos: s2Idx, hole: hIdx } );\n\t\t\t\t\t\t\tif ( hole_unassigned ) {\n\n\t\t\t\t\t\t\t\thole_unassigned = false;\n\t\t\t\t\t\t\t\tbetterShapeHoles[ s2Idx ].push( ho );\n\n\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\tambiguous = true;\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( hole_unassigned ) {\n\n\t\t\t\t\t\tbetterShapeHoles[ sIdx ].push( ho );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\t\t\t// console.log(\"ambiguous: \", ambiguous);\n\n\t\t\tif ( toChange.length > 0 ) {\n\n\t\t\t\t// console.log(\"to change: \", toChange);\n\t\t\t\tif ( ! ambiguous )\tnewShapeHoles = betterShapeHoles;\n\n\t\t\t}\n\n\t\t}\n\n\t\tlet tmpHoles;\n\n\t\tfor ( let i = 0, il = newShapes.length; i < il; i ++ ) {\n\n\t\t\ttmpShape = newShapes[ i ].s;\n\t\t\tshapes.push( tmpShape );\n\t\t\ttmpHoles = newShapeHoles[ i ];\n\n\t\t\tfor ( let j = 0, jl = tmpHoles.length; j < jl; j ++ ) {\n\n\t\t\t\ttmpShape.holes.push( tmpHoles[ j ].h );\n\n\t\t\t}\n\n\t\t}\n\n\t\t//console.log(\"shape\", shapes);\n\n\t\treturn shapes;\n\n\t}\n\n} );\n\nfunction Font( data ) {\n\n\tthis.type = 'Font';\n\n\tthis.data = data;\n\n}\n\nObject.assign( Font.prototype, {\n\n\tisFont: true,\n\n\tgenerateShapes: function ( text, size = 100 ) {\n\n\t\tconst shapes = [];\n\t\tconst paths = createPaths( text, size, this.data );\n\n\t\tfor ( let p = 0, pl = paths.length; p < pl; p ++ ) {\n\n\t\t\tArray.prototype.push.apply( shapes, paths[ p ].toShapes() );\n\n\t\t}\n\n\t\treturn shapes;\n\n\t}\n\n} );\n\nfunction createPaths( text, size, data ) {\n\n\tconst chars = Array.from ? Array.from( text ) : String( text ).split( '' ); // workaround for IE11, see #13988\n\tconst scale = size / data.resolution;\n\tconst line_height = ( data.boundingBox.yMax - data.boundingBox.yMin + data.underlineThickness ) * scale;\n\n\tconst paths = [];\n\n\tlet offsetX = 0, offsetY = 0;\n\n\tfor ( let i = 0; i < chars.length; i ++ ) {\n\n\t\tconst char = chars[ i ];\n\n\t\tif ( char === '\\n' ) {\n\n\t\t\toffsetX = 0;\n\t\t\toffsetY -= line_height;\n\n\t\t} else {\n\n\t\t\tconst ret = createPath( char, scale, offsetX, offsetY, data );\n\t\t\toffsetX += ret.offsetX;\n\t\t\tpaths.push( ret.path );\n\n\t\t}\n\n\t}\n\n\treturn paths;\n\n}\n\nfunction createPath( char, scale, offsetX, offsetY, data ) {\n\n\tconst glyph = data.glyphs[ char ] || data.glyphs[ '?' ];\n\n\tif ( ! glyph ) {\n\n\t\tconsole.error( 'THREE.Font: character \"' + char + '\" does not exists in font family ' + data.familyName + '.' );\n\n\t\treturn;\n\n\t}\n\n\tconst path = new ShapePath();\n\n\tlet x, y, cpx, cpy, cpx1, cpy1, cpx2, cpy2;\n\n\tif ( glyph.o ) {\n\n\t\tconst outline = glyph._cachedOutline || ( glyph._cachedOutline = glyph.o.split( ' ' ) );\n\n\t\tfor ( let i = 0, l = outline.length; i < l; ) {\n\n\t\t\tconst action = outline[ i ++ ];\n\n\t\t\tswitch ( action ) {\n\n\t\t\t\tcase 'm': // moveTo\n\n\t\t\t\t\tx = outline[ i ++ ] * scale + offsetX;\n\t\t\t\t\ty = outline[ i ++ ] * scale + offsetY;\n\n\t\t\t\t\tpath.moveTo( x, y );\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'l': // lineTo\n\n\t\t\t\t\tx = outline[ i ++ ] * scale + offsetX;\n\t\t\t\t\ty = outline[ i ++ ] * scale + offsetY;\n\n\t\t\t\t\tpath.lineTo( x, y );\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'q': // quadraticCurveTo\n\n\t\t\t\t\tcpx = outline[ i ++ ] * scale + offsetX;\n\t\t\t\t\tcpy = outline[ i ++ ] * scale + offsetY;\n\t\t\t\t\tcpx1 = outline[ i ++ ] * scale + offsetX;\n\t\t\t\t\tcpy1 = outline[ i ++ ] * scale + offsetY;\n\n\t\t\t\t\tpath.quadraticCurveTo( cpx1, cpy1, cpx, cpy );\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'b': // bezierCurveTo\n\n\t\t\t\t\tcpx = outline[ i ++ ] * scale + offsetX;\n\t\t\t\t\tcpy = outline[ i ++ ] * scale + offsetY;\n\t\t\t\t\tcpx1 = outline[ i ++ ] * scale + offsetX;\n\t\t\t\t\tcpy1 = outline[ i ++ ] * scale + offsetY;\n\t\t\t\t\tcpx2 = outline[ i ++ ] * scale + offsetX;\n\t\t\t\t\tcpy2 = outline[ i ++ ] * scale + offsetY;\n\n\t\t\t\t\tpath.bezierCurveTo( cpx1, cpy1, cpx2, cpy2, cpx, cpy );\n\n\t\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\treturn { offsetX: glyph.ha * scale, path: path };\n\n}\n\nfunction FontLoader( manager ) {\n\n\tLoader.call( this, manager );\n\n}\n\nFontLoader.prototype = Object.assign( Object.create( Loader.prototype ), {\n\n\tconstructor: FontLoader,\n\n\tload: function ( url, onLoad, onProgress, onError ) {\n\n\t\tconst scope = this;\n\n\t\tconst loader = new FileLoader( this.manager );\n\t\tloader.setPath( this.path );\n\t\tloader.setRequestHeader( this.requestHeader );\n\t\tloader.setWithCredentials( scope.withCredentials );\n\t\tloader.load( url, function ( text ) {\n\n\t\t\tlet json;\n\n\t\t\ttry {\n\n\t\t\t\tjson = JSON.parse( text );\n\n\t\t\t} catch ( e ) {\n\n\t\t\t\tconsole.warn( 'THREE.FontLoader: typeface.js support is being deprecated. Use typeface.json instead.' );\n\t\t\t\tjson = JSON.parse( text.substring( 65, text.length - 2 ) );\n\n\t\t\t}\n\n\t\t\tconst font = scope.parse( json );\n\n\t\t\tif ( onLoad ) onLoad( font );\n\n\t\t}, onProgress, onError );\n\n\t},\n\n\tparse: function ( json ) {\n\n\t\treturn new Font( json );\n\n\t}\n\n} );\n\nlet _context;\n\nconst AudioContext = {\n\n\tgetContext: function () {\n\n\t\tif ( _context === undefined ) {\n\n\t\t\t_context = new ( window.AudioContext || window.webkitAudioContext )();\n\n\t\t}\n\n\t\treturn _context;\n\n\t},\n\n\tsetContext: function ( value ) {\n\n\t\t_context = value;\n\n\t}\n\n};\n\nfunction AudioLoader( manager ) {\n\n\tLoader.call( this, manager );\n\n}\n\nAudioLoader.prototype = Object.assign( Object.create( Loader.prototype ), {\n\n\tconstructor: AudioLoader,\n\n\tload: function ( url, onLoad, onProgress, onError ) {\n\n\t\tconst scope = this;\n\n\t\tconst loader = new FileLoader( scope.manager );\n\t\tloader.setResponseType( 'arraybuffer' );\n\t\tloader.setPath( scope.path );\n\t\tloader.setRequestHeader( scope.requestHeader );\n\t\tloader.setWithCredentials( scope.withCredentials );\n\t\tloader.load( url, function ( buffer ) {\n\n\t\t\ttry {\n\n\t\t\t\t// Create a copy of the buffer. The `decodeAudioData` method\n\t\t\t\t// detaches the buffer when complete, preventing reuse.\n\t\t\t\tconst bufferCopy = buffer.slice( 0 );\n\n\t\t\t\tconst context = AudioContext.getContext();\n\t\t\t\tcontext.decodeAudioData( bufferCopy, function ( audioBuffer ) {\n\n\t\t\t\t\tonLoad( audioBuffer );\n\n\t\t\t\t} );\n\n\t\t\t} catch ( e ) {\n\n\t\t\t\tif ( onError ) {\n\n\t\t\t\t\tonError( e );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.error( e );\n\n\t\t\t\t}\n\n\t\t\t\tscope.manager.itemError( url );\n\n\t\t\t}\n\n\t\t}, onProgress, onError );\n\n\t}\n\n} );\n\nfunction HemisphereLightProbe( skyColor, groundColor, intensity ) {\n\n\tLightProbe.call( this, undefined, intensity );\n\n\tconst color1 = new Color().set( skyColor );\n\tconst color2 = new Color().set( groundColor );\n\n\tconst sky = new Vector3( color1.r, color1.g, color1.b );\n\tconst ground = new Vector3( color2.r, color2.g, color2.b );\n\n\t// without extra factor of PI in the shader, should = 1 / Math.sqrt( Math.PI );\n\tconst c0 = Math.sqrt( Math.PI );\n\tconst c1 = c0 * Math.sqrt( 0.75 );\n\n\tthis.sh.coefficients[ 0 ].copy( sky ).add( ground ).multiplyScalar( c0 );\n\tthis.sh.coefficients[ 1 ].copy( sky ).sub( ground ).multiplyScalar( c1 );\n\n}\n\nHemisphereLightProbe.prototype = Object.assign( Object.create( LightProbe.prototype ), {\n\n\tconstructor: HemisphereLightProbe,\n\n\tisHemisphereLightProbe: true,\n\n\tcopy: function ( source ) { // modifying colors not currently supported\n\n\t\tLightProbe.prototype.copy.call( this, source );\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function ( meta ) {\n\n\t\tconst data = LightProbe.prototype.toJSON.call( this, meta );\n\n\t\t// data.sh = this.sh.toArray(); // todo\n\n\t\treturn data;\n\n\t}\n\n} );\n\nfunction AmbientLightProbe( color, intensity ) {\n\n\tLightProbe.call( this, undefined, intensity );\n\n\tconst color1 = new Color().set( color );\n\n\t// without extra factor of PI in the shader, would be 2 / Math.sqrt( Math.PI );\n\tthis.sh.coefficients[ 0 ].set( color1.r, color1.g, color1.b ).multiplyScalar( 2 * Math.sqrt( Math.PI ) );\n\n}\n\nAmbientLightProbe.prototype = Object.assign( Object.create( LightProbe.prototype ), {\n\n\tconstructor: AmbientLightProbe,\n\n\tisAmbientLightProbe: true,\n\n\tcopy: function ( source ) { // modifying color not currently supported\n\n\t\tLightProbe.prototype.copy.call( this, source );\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function ( meta ) {\n\n\t\tconst data = LightProbe.prototype.toJSON.call( this, meta );\n\n\t\t// data.sh = this.sh.toArray(); // todo\n\n\t\treturn data;\n\n\t}\n\n} );\n\nconst _eyeRight = new Matrix4();\nconst _eyeLeft = new Matrix4();\n\nfunction StereoCamera() {\n\n\tthis.type = 'StereoCamera';\n\n\tthis.aspect = 1;\n\n\tthis.eyeSep = 0.064;\n\n\tthis.cameraL = new PerspectiveCamera();\n\tthis.cameraL.layers.enable( 1 );\n\tthis.cameraL.matrixAutoUpdate = false;\n\n\tthis.cameraR = new PerspectiveCamera();\n\tthis.cameraR.layers.enable( 2 );\n\tthis.cameraR.matrixAutoUpdate = false;\n\n\tthis._cache = {\n\t\tfocus: null,\n\t\tfov: null,\n\t\taspect: null,\n\t\tnear: null,\n\t\tfar: null,\n\t\tzoom: null,\n\t\teyeSep: null\n\t};\n\n}\n\nObject.assign( StereoCamera.prototype, {\n\n\tupdate: function ( camera ) {\n\n\t\tconst cache = this._cache;\n\n\t\tconst needsUpdate = cache.focus !== camera.focus || cache.fov !== camera.fov ||\n\t\t\tcache.aspect !== camera.aspect * this.aspect || cache.near !== camera.near ||\n\t\t\tcache.far !== camera.far || cache.zoom !== camera.zoom || cache.eyeSep !== this.eyeSep;\n\n\t\tif ( needsUpdate ) {\n\n\t\t\tcache.focus = camera.focus;\n\t\t\tcache.fov = camera.fov;\n\t\t\tcache.aspect = camera.aspect * this.aspect;\n\t\t\tcache.near = camera.near;\n\t\t\tcache.far = camera.far;\n\t\t\tcache.zoom = camera.zoom;\n\t\t\tcache.eyeSep = this.eyeSep;\n\n\t\t\t// Off-axis stereoscopic effect based on\n\t\t\t// http://paulbourke.net/stereographics/stereorender/\n\n\t\t\tconst projectionMatrix = camera.projectionMatrix.clone();\n\t\t\tconst eyeSepHalf = cache.eyeSep / 2;\n\t\t\tconst eyeSepOnProjection = eyeSepHalf * cache.near / cache.focus;\n\t\t\tconst ymax = ( cache.near * Math.tan( MathUtils.DEG2RAD * cache.fov * 0.5 ) ) / cache.zoom;\n\t\t\tlet xmin, xmax;\n\n\t\t\t// translate xOffset\n\n\t\t\t_eyeLeft.elements[ 12 ] = - eyeSepHalf;\n\t\t\t_eyeRight.elements[ 12 ] = eyeSepHalf;\n\n\t\t\t// for left eye\n\n\t\t\txmin = - ymax * cache.aspect + eyeSepOnProjection;\n\t\t\txmax = ymax * cache.aspect + eyeSepOnProjection;\n\n\t\t\tprojectionMatrix.elements[ 0 ] = 2 * cache.near / ( xmax - xmin );\n\t\t\tprojectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );\n\n\t\t\tthis.cameraL.projectionMatrix.copy( projectionMatrix );\n\n\t\t\t// for right eye\n\n\t\t\txmin = - ymax * cache.aspect - eyeSepOnProjection;\n\t\t\txmax = ymax * cache.aspect - eyeSepOnProjection;\n\n\t\t\tprojectionMatrix.elements[ 0 ] = 2 * cache.near / ( xmax - xmin );\n\t\t\tprojectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );\n\n\t\t\tthis.cameraR.projectionMatrix.copy( projectionMatrix );\n\n\t\t}\n\n\t\tthis.cameraL.matrixWorld.copy( camera.matrixWorld ).multiply( _eyeLeft );\n\t\tthis.cameraR.matrixWorld.copy( camera.matrixWorld ).multiply( _eyeRight );\n\n\t}\n\n} );\n\nclass Clock {\n\n\tconstructor( autoStart ) {\n\n\t\tthis.autoStart = ( autoStart !== undefined ) ? autoStart : true;\n\n\t\tthis.startTime = 0;\n\t\tthis.oldTime = 0;\n\t\tthis.elapsedTime = 0;\n\n\t\tthis.running = false;\n\n\t}\n\n\tstart() {\n\n\t\tthis.startTime = now();\n\n\t\tthis.oldTime = this.startTime;\n\t\tthis.elapsedTime = 0;\n\t\tthis.running = true;\n\n\t}\n\n\tstop() {\n\n\t\tthis.getElapsedTime();\n\t\tthis.running = false;\n\t\tthis.autoStart = false;\n\n\t}\n\n\tgetElapsedTime() {\n\n\t\tthis.getDelta();\n\t\treturn this.elapsedTime;\n\n\t}\n\n\tgetDelta() {\n\n\t\tlet diff = 0;\n\n\t\tif ( this.autoStart && ! this.running ) {\n\n\t\t\tthis.start();\n\t\t\treturn 0;\n\n\t\t}\n\n\t\tif ( this.running ) {\n\n\t\t\tconst newTime = now();\n\n\t\t\tdiff = ( newTime - this.oldTime ) / 1000;\n\t\t\tthis.oldTime = newTime;\n\n\t\t\tthis.elapsedTime += diff;\n\n\t\t}\n\n\t\treturn diff;\n\n\t}\n\n}\n\nfunction now() {\n\n\treturn ( typeof performance === 'undefined' ? Date : performance ).now(); // see #10732\n\n}\n\nconst _position$2 = /*@__PURE__*/ new Vector3();\nconst _quaternion$3 = /*@__PURE__*/ new Quaternion();\nconst _scale$1 = /*@__PURE__*/ new Vector3();\nconst _orientation = /*@__PURE__*/ new Vector3();\n\nclass AudioListener extends Object3D {\n\n\tconstructor() {\n\n\t\tsuper();\n\n\t\tthis.type = 'AudioListener';\n\n\t\tthis.context = AudioContext.getContext();\n\n\t\tthis.gain = this.context.createGain();\n\t\tthis.gain.connect( this.context.destination );\n\n\t\tthis.filter = null;\n\n\t\tthis.timeDelta = 0;\n\n\t\t// private\n\n\t\tthis._clock = new Clock();\n\n\t}\n\n\tgetInput() {\n\n\t\treturn this.gain;\n\n\t}\n\n\tremoveFilter() {\n\n\t\tif ( this.filter !== null ) {\n\n\t\t\tthis.gain.disconnect( this.filter );\n\t\t\tthis.filter.disconnect( this.context.destination );\n\t\t\tthis.gain.connect( this.context.destination );\n\t\t\tthis.filter = null;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tgetFilter() {\n\n\t\treturn this.filter;\n\n\t}\n\n\tsetFilter( value ) {\n\n\t\tif ( this.filter !== null ) {\n\n\t\t\tthis.gain.disconnect( this.filter );\n\t\t\tthis.filter.disconnect( this.context.destination );\n\n\t\t} else {\n\n\t\t\tthis.gain.disconnect( this.context.destination );\n\n\t\t}\n\n\t\tthis.filter = value;\n\t\tthis.gain.connect( this.filter );\n\t\tthis.filter.connect( this.context.destination );\n\n\t\treturn this;\n\n\t}\n\n\tgetMasterVolume() {\n\n\t\treturn this.gain.gain.value;\n\n\t}\n\n\tsetMasterVolume( value ) {\n\n\t\tthis.gain.gain.setTargetAtTime( value, this.context.currentTime, 0.01 );\n\n\t\treturn this;\n\n\t}\n\n\tupdateMatrixWorld( force ) {\n\n\t\tsuper.updateMatrixWorld( force );\n\n\t\tconst listener = this.context.listener;\n\t\tconst up = this.up;\n\n\t\tthis.timeDelta = this._clock.getDelta();\n\n\t\tthis.matrixWorld.decompose( _position$2, _quaternion$3, _scale$1 );\n\n\t\t_orientation.set( 0, 0, - 1 ).applyQuaternion( _quaternion$3 );\n\n\t\tif ( listener.positionX ) {\n\n\t\t\t// code path for Chrome (see #14393)\n\n\t\t\tconst endTime = this.context.currentTime + this.timeDelta;\n\n\t\t\tlistener.positionX.linearRampToValueAtTime( _position$2.x, endTime );\n\t\t\tlistener.positionY.linearRampToValueAtTime( _position$2.y, endTime );\n\t\t\tlistener.positionZ.linearRampToValueAtTime( _position$2.z, endTime );\n\t\t\tlistener.forwardX.linearRampToValueAtTime( _orientation.x, endTime );\n\t\t\tlistener.forwardY.linearRampToValueAtTime( _orientation.y, endTime );\n\t\t\tlistener.forwardZ.linearRampToValueAtTime( _orientation.z, endTime );\n\t\t\tlistener.upX.linearRampToValueAtTime( up.x, endTime );\n\t\t\tlistener.upY.linearRampToValueAtTime( up.y, endTime );\n\t\t\tlistener.upZ.linearRampToValueAtTime( up.z, endTime );\n\n\t\t} else {\n\n\t\t\tlistener.setPosition( _position$2.x, _position$2.y, _position$2.z );\n\t\t\tlistener.setOrientation( _orientation.x, _orientation.y, _orientation.z, up.x, up.y, up.z );\n\n\t\t}\n\n\t}\n\n}\n\nclass Audio extends Object3D {\n\n\tconstructor( listener ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'Audio';\n\n\t\tthis.listener = listener;\n\t\tthis.context = listener.context;\n\n\t\tthis.gain = this.context.createGain();\n\t\tthis.gain.connect( listener.getInput() );\n\n\t\tthis.autoplay = false;\n\n\t\tthis.buffer = null;\n\t\tthis.detune = 0;\n\t\tthis.loop = false;\n\t\tthis.loopStart = 0;\n\t\tthis.loopEnd = 0;\n\t\tthis.offset = 0;\n\t\tthis.duration = undefined;\n\t\tthis.playbackRate = 1;\n\t\tthis.isPlaying = false;\n\t\tthis.hasPlaybackControl = true;\n\t\tthis.source = null;\n\t\tthis.sourceType = 'empty';\n\n\t\tthis._startedAt = 0;\n\t\tthis._progress = 0;\n\t\tthis._connected = false;\n\n\t\tthis.filters = [];\n\n\t}\n\n\tgetOutput() {\n\n\t\treturn this.gain;\n\n\t}\n\n\tsetNodeSource( audioNode ) {\n\n\t\tthis.hasPlaybackControl = false;\n\t\tthis.sourceType = 'audioNode';\n\t\tthis.source = audioNode;\n\t\tthis.connect();\n\n\t\treturn this;\n\n\t}\n\n\tsetMediaElementSource( mediaElement ) {\n\n\t\tthis.hasPlaybackControl = false;\n\t\tthis.sourceType = 'mediaNode';\n\t\tthis.source = this.context.createMediaElementSource( mediaElement );\n\t\tthis.connect();\n\n\t\treturn this;\n\n\t}\n\n\tsetMediaStreamSource( mediaStream ) {\n\n\t\tthis.hasPlaybackControl = false;\n\t\tthis.sourceType = 'mediaStreamNode';\n\t\tthis.source = this.context.createMediaStreamSource( mediaStream );\n\t\tthis.connect();\n\n\t\treturn this;\n\n\t}\n\n\tsetBuffer( audioBuffer ) {\n\n\t\tthis.buffer = audioBuffer;\n\t\tthis.sourceType = 'buffer';\n\n\t\tif ( this.autoplay ) this.play();\n\n\t\treturn this;\n\n\t}\n\n\tplay( delay = 0 ) {\n\n\t\tif ( this.isPlaying === true ) {\n\n\t\t\tconsole.warn( 'THREE.Audio: Audio is already playing.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( this.hasPlaybackControl === false ) {\n\n\t\t\tconsole.warn( 'THREE.Audio: this Audio has no playback control.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tthis._startedAt = this.context.currentTime + delay;\n\n\t\tconst source = this.context.createBufferSource();\n\t\tsource.buffer = this.buffer;\n\t\tsource.loop = this.loop;\n\t\tsource.loopStart = this.loopStart;\n\t\tsource.loopEnd = this.loopEnd;\n\t\tsource.onended = this.onEnded.bind( this );\n\t\tsource.start( this._startedAt, this._progress + this.offset, this.duration );\n\n\t\tthis.isPlaying = true;\n\n\t\tthis.source = source;\n\n\t\tthis.setDetune( this.detune );\n\t\tthis.setPlaybackRate( this.playbackRate );\n\n\t\treturn this.connect();\n\n\t}\n\n\tpause() {\n\n\t\tif ( this.hasPlaybackControl === false ) {\n\n\t\t\tconsole.warn( 'THREE.Audio: this Audio has no playback control.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( this.isPlaying === true ) {\n\n\t\t\t// update current progress\n\n\t\t\tthis._progress += Math.max( this.context.currentTime - this._startedAt, 0 ) * this.playbackRate;\n\n\t\t\tif ( this.loop === true ) {\n\n\t\t\t\t// ensure _progress does not exceed duration with looped audios\n\n\t\t\t\tthis._progress = this._progress % ( this.duration || this.buffer.duration );\n\n\t\t\t}\n\n\t\t\tthis.source.stop();\n\t\t\tthis.source.onended = null;\n\n\t\t\tthis.isPlaying = false;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tstop() {\n\n\t\tif ( this.hasPlaybackControl === false ) {\n\n\t\t\tconsole.warn( 'THREE.Audio: this Audio has no playback control.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tthis._progress = 0;\n\n\t\tthis.source.stop();\n\t\tthis.source.onended = null;\n\t\tthis.isPlaying = false;\n\n\t\treturn this;\n\n\t}\n\n\tconnect() {\n\n\t\tif ( this.filters.length > 0 ) {\n\n\t\t\tthis.source.connect( this.filters[ 0 ] );\n\n\t\t\tfor ( let i = 1, l = this.filters.length; i < l; i ++ ) {\n\n\t\t\t\tthis.filters[ i - 1 ].connect( this.filters[ i ] );\n\n\t\t\t}\n\n\t\t\tthis.filters[ this.filters.length - 1 ].connect( this.getOutput() );\n\n\t\t} else {\n\n\t\t\tthis.source.connect( this.getOutput() );\n\n\t\t}\n\n\t\tthis._connected = true;\n\n\t\treturn this;\n\n\t}\n\n\tdisconnect() {\n\n\t\tif ( this.filters.length > 0 ) {\n\n\t\t\tthis.source.disconnect( this.filters[ 0 ] );\n\n\t\t\tfor ( let i = 1, l = this.filters.length; i < l; i ++ ) {\n\n\t\t\t\tthis.filters[ i - 1 ].disconnect( this.filters[ i ] );\n\n\t\t\t}\n\n\t\t\tthis.filters[ this.filters.length - 1 ].disconnect( this.getOutput() );\n\n\t\t} else {\n\n\t\t\tthis.source.disconnect( this.getOutput() );\n\n\t\t}\n\n\t\tthis._connected = false;\n\n\t\treturn this;\n\n\t}\n\n\tgetFilters() {\n\n\t\treturn this.filters;\n\n\t}\n\n\tsetFilters( value ) {\n\n\t\tif ( ! value ) value = [];\n\n\t\tif ( this._connected === true ) {\n\n\t\t\tthis.disconnect();\n\t\t\tthis.filters = value.slice();\n\t\t\tthis.connect();\n\n\t\t} else {\n\n\t\t\tthis.filters = value.slice();\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetDetune( value ) {\n\n\t\tthis.detune = value;\n\n\t\tif ( this.source.detune === undefined ) return; // only set detune when available\n\n\t\tif ( this.isPlaying === true ) {\n\n\t\t\tthis.source.detune.setTargetAtTime( this.detune, this.context.currentTime, 0.01 );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tgetDetune() {\n\n\t\treturn this.detune;\n\n\t}\n\n\tgetFilter() {\n\n\t\treturn this.getFilters()[ 0 ];\n\n\t}\n\n\tsetFilter( filter ) {\n\n\t\treturn this.setFilters( filter ? [ filter ] : [] );\n\n\t}\n\n\tsetPlaybackRate( value ) {\n\n\t\tif ( this.hasPlaybackControl === false ) {\n\n\t\t\tconsole.warn( 'THREE.Audio: this Audio has no playback control.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tthis.playbackRate = value;\n\n\t\tif ( this.isPlaying === true ) {\n\n\t\t\tthis.source.playbackRate.setTargetAtTime( this.playbackRate, this.context.currentTime, 0.01 );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tgetPlaybackRate() {\n\n\t\treturn this.playbackRate;\n\n\t}\n\n\tonEnded() {\n\n\t\tthis.isPlaying = false;\n\n\t}\n\n\tgetLoop() {\n\n\t\tif ( this.hasPlaybackControl === false ) {\n\n\t\t\tconsole.warn( 'THREE.Audio: this Audio has no playback control.' );\n\t\t\treturn false;\n\n\t\t}\n\n\t\treturn this.loop;\n\n\t}\n\n\tsetLoop( value ) {\n\n\t\tif ( this.hasPlaybackControl === false ) {\n\n\t\t\tconsole.warn( 'THREE.Audio: this Audio has no playback control.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tthis.loop = value;\n\n\t\tif ( this.isPlaying === true ) {\n\n\t\t\tthis.source.loop = this.loop;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetLoopStart( value ) {\n\n\t\tthis.loopStart = value;\n\n\t\treturn this;\n\n\t}\n\n\tsetLoopEnd( value ) {\n\n\t\tthis.loopEnd = value;\n\n\t\treturn this;\n\n\t}\n\n\tgetVolume() {\n\n\t\treturn this.gain.gain.value;\n\n\t}\n\n\tsetVolume( value ) {\n\n\t\tthis.gain.gain.setTargetAtTime( value, this.context.currentTime, 0.01 );\n\n\t\treturn this;\n\n\t}\n\n}\n\nconst _position$3 = /*@__PURE__*/ new Vector3();\nconst _quaternion$4 = /*@__PURE__*/ new Quaternion();\nconst _scale$2 = /*@__PURE__*/ new Vector3();\nconst _orientation$1 = /*@__PURE__*/ new Vector3();\n\nclass PositionalAudio extends Audio {\n\n\tconstructor( listener ) {\n\n\t\tsuper( listener );\n\n\t\tthis.panner = this.context.createPanner();\n\t\tthis.panner.panningModel = 'HRTF';\n\t\tthis.panner.connect( this.gain );\n\n\t}\n\n\tgetOutput() {\n\n\t\treturn this.panner;\n\n\t}\n\n\tgetRefDistance() {\n\n\t\treturn this.panner.refDistance;\n\n\t}\n\n\tsetRefDistance( value ) {\n\n\t\tthis.panner.refDistance = value;\n\n\t\treturn this;\n\n\t}\n\n\tgetRolloffFactor() {\n\n\t\treturn this.panner.rolloffFactor;\n\n\t}\n\n\tsetRolloffFactor( value ) {\n\n\t\tthis.panner.rolloffFactor = value;\n\n\t\treturn this;\n\n\t}\n\n\tgetDistanceModel() {\n\n\t\treturn this.panner.distanceModel;\n\n\t}\n\n\tsetDistanceModel( value ) {\n\n\t\tthis.panner.distanceModel = value;\n\n\t\treturn this;\n\n\t}\n\n\tgetMaxDistance() {\n\n\t\treturn this.panner.maxDistance;\n\n\t}\n\n\tsetMaxDistance( value ) {\n\n\t\tthis.panner.maxDistance = value;\n\n\t\treturn this;\n\n\t}\n\n\tsetDirectionalCone( coneInnerAngle, coneOuterAngle, coneOuterGain ) {\n\n\t\tthis.panner.coneInnerAngle = coneInnerAngle;\n\t\tthis.panner.coneOuterAngle = coneOuterAngle;\n\t\tthis.panner.coneOuterGain = coneOuterGain;\n\n\t\treturn this;\n\n\t}\n\n\tupdateMatrixWorld( force ) {\n\n\t\tsuper.updateMatrixWorld( force );\n\n\t\tif ( this.hasPlaybackControl === true && this.isPlaying === false ) return;\n\n\t\tthis.matrixWorld.decompose( _position$3, _quaternion$4, _scale$2 );\n\n\t\t_orientation$1.set( 0, 0, 1 ).applyQuaternion( _quaternion$4 );\n\n\t\tconst panner = this.panner;\n\n\t\tif ( panner.positionX ) {\n\n\t\t\t// code path for Chrome and Firefox (see #14393)\n\n\t\t\tconst endTime = this.context.currentTime + this.listener.timeDelta;\n\n\t\t\tpanner.positionX.linearRampToValueAtTime( _position$3.x, endTime );\n\t\t\tpanner.positionY.linearRampToValueAtTime( _position$3.y, endTime );\n\t\t\tpanner.positionZ.linearRampToValueAtTime( _position$3.z, endTime );\n\t\t\tpanner.orientationX.linearRampToValueAtTime( _orientation$1.x, endTime );\n\t\t\tpanner.orientationY.linearRampToValueAtTime( _orientation$1.y, endTime );\n\t\t\tpanner.orientationZ.linearRampToValueAtTime( _orientation$1.z, endTime );\n\n\t\t} else {\n\n\t\t\tpanner.setPosition( _position$3.x, _position$3.y, _position$3.z );\n\t\t\tpanner.setOrientation( _orientation$1.x, _orientation$1.y, _orientation$1.z );\n\n\t\t}\n\n\t}\n\n}\n\nclass AudioAnalyser {\n\n\tconstructor( audio, fftSize = 2048 ) {\n\n\t\tthis.analyser = audio.context.createAnalyser();\n\t\tthis.analyser.fftSize = fftSize;\n\n\t\tthis.data = new Uint8Array( this.analyser.frequencyBinCount );\n\n\t\taudio.getOutput().connect( this.analyser );\n\n\t}\n\n\n\tgetFrequencyData() {\n\n\t\tthis.analyser.getByteFrequencyData( this.data );\n\n\t\treturn this.data;\n\n\t}\n\n\tgetAverageFrequency() {\n\n\t\tlet value = 0;\n\t\tconst data = this.getFrequencyData();\n\n\t\tfor ( let i = 0; i < data.length; i ++ ) {\n\n\t\t\tvalue += data[ i ];\n\n\t\t}\n\n\t\treturn value / data.length;\n\n\t}\n\n}\n\nfunction PropertyMixer( binding, typeName, valueSize ) {\n\n\tthis.binding = binding;\n\tthis.valueSize = valueSize;\n\n\tlet mixFunction,\n\t\tmixFunctionAdditive,\n\t\tsetIdentity;\n\n\t// buffer layout: [ incoming | accu0 | accu1 | orig | addAccu | (optional work) ]\n\t//\n\t// interpolators can use .buffer as their .result\n\t// the data then goes to 'incoming'\n\t//\n\t// 'accu0' and 'accu1' are used frame-interleaved for\n\t// the cumulative result and are compared to detect\n\t// changes\n\t//\n\t// 'orig' stores the original state of the property\n\t//\n\t// 'add' is used for additive cumulative results\n\t//\n\t// 'work' is optional and is only present for quaternion types. It is used\n\t// to store intermediate quaternion multiplication results\n\n\tswitch ( typeName ) {\n\n\t\tcase 'quaternion':\n\t\t\tmixFunction = this._slerp;\n\t\t\tmixFunctionAdditive = this._slerpAdditive;\n\t\t\tsetIdentity = this._setAdditiveIdentityQuaternion;\n\n\t\t\tthis.buffer = new Float64Array( valueSize * 6 );\n\t\t\tthis._workIndex = 5;\n\t\t\tbreak;\n\n\t\tcase 'string':\n\t\tcase 'bool':\n\t\t\tmixFunction = this._select;\n\n\t\t\t// Use the regular mix function and for additive on these types,\n\t\t\t// additive is not relevant for non-numeric types\n\t\t\tmixFunctionAdditive = this._select;\n\n\t\t\tsetIdentity = this._setAdditiveIdentityOther;\n\n\t\t\tthis.buffer = new Array( valueSize * 5 );\n\t\t\tbreak;\n\n\t\tdefault:\n\t\t\tmixFunction = this._lerp;\n\t\t\tmixFunctionAdditive = this._lerpAdditive;\n\t\t\tsetIdentity = this._setAdditiveIdentityNumeric;\n\n\t\t\tthis.buffer = new Float64Array( valueSize * 5 );\n\n\t}\n\n\tthis._mixBufferRegion = mixFunction;\n\tthis._mixBufferRegionAdditive = mixFunctionAdditive;\n\tthis._setIdentity = setIdentity;\n\tthis._origIndex = 3;\n\tthis._addIndex = 4;\n\n\tthis.cumulativeWeight = 0;\n\tthis.cumulativeWeightAdditive = 0;\n\n\tthis.useCount = 0;\n\tthis.referenceCount = 0;\n\n}\n\nObject.assign( PropertyMixer.prototype, {\n\n\t// accumulate data in the 'incoming' region into 'accu<i>'\n\taccumulate: function ( accuIndex, weight ) {\n\n\t\t// note: happily accumulating nothing when weight = 0, the caller knows\n\t\t// the weight and shouldn't have made the call in the first place\n\n\t\tconst buffer = this.buffer,\n\t\t\tstride = this.valueSize,\n\t\t\toffset = accuIndex * stride + stride;\n\n\t\tlet currentWeight = this.cumulativeWeight;\n\n\t\tif ( currentWeight === 0 ) {\n\n\t\t\t// accuN := incoming * weight\n\n\t\t\tfor ( let i = 0; i !== stride; ++ i ) {\n\n\t\t\t\tbuffer[ offset + i ] = buffer[ i ];\n\n\t\t\t}\n\n\t\t\tcurrentWeight = weight;\n\n\t\t} else {\n\n\t\t\t// accuN := accuN + incoming * weight\n\n\t\t\tcurrentWeight += weight;\n\t\t\tconst mix = weight / currentWeight;\n\t\t\tthis._mixBufferRegion( buffer, offset, 0, mix, stride );\n\n\t\t}\n\n\t\tthis.cumulativeWeight = currentWeight;\n\n\t},\n\n\t// accumulate data in the 'incoming' region into 'add'\n\taccumulateAdditive: function ( weight ) {\n\n\t\tconst buffer = this.buffer,\n\t\t\tstride = this.valueSize,\n\t\t\toffset = stride * this._addIndex;\n\n\t\tif ( this.cumulativeWeightAdditive === 0 ) {\n\n\t\t\t// add = identity\n\n\t\t\tthis._setIdentity();\n\n\t\t}\n\n\t\t// add := add + incoming * weight\n\n\t\tthis._mixBufferRegionAdditive( buffer, offset, 0, weight, stride );\n\t\tthis.cumulativeWeightAdditive += weight;\n\n\t},\n\n\t// apply the state of 'accu<i>' to the binding when accus differ\n\tapply: function ( accuIndex ) {\n\n\t\tconst stride = this.valueSize,\n\t\t\tbuffer = this.buffer,\n\t\t\toffset = accuIndex * stride + stride,\n\n\t\t\tweight = this.cumulativeWeight,\n\t\t\tweightAdditive = this.cumulativeWeightAdditive,\n\n\t\t\tbinding = this.binding;\n\n\t\tthis.cumulativeWeight = 0;\n\t\tthis.cumulativeWeightAdditive = 0;\n\n\t\tif ( weight < 1 ) {\n\n\t\t\t// accuN := accuN + original * ( 1 - cumulativeWeight )\n\n\t\t\tconst originalValueOffset = stride * this._origIndex;\n\n\t\t\tthis._mixBufferRegion(\n\t\t\t\tbuffer, offset, originalValueOffset, 1 - weight, stride );\n\n\t\t}\n\n\t\tif ( weightAdditive > 0 ) {\n\n\t\t\t// accuN := accuN + additive accuN\n\n\t\t\tthis._mixBufferRegionAdditive( buffer, offset, this._addIndex * stride, 1, stride );\n\n\t\t}\n\n\t\tfor ( let i = stride, e = stride + stride; i !== e; ++ i ) {\n\n\t\t\tif ( buffer[ i ] !== buffer[ i + stride ] ) {\n\n\t\t\t\t// value has changed -> update scene graph\n\n\t\t\t\tbinding.setValue( buffer, offset );\n\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\t// remember the state of the bound property and copy it to both accus\n\tsaveOriginalState: function () {\n\n\t\tconst binding = this.binding;\n\n\t\tconst buffer = this.buffer,\n\t\t\tstride = this.valueSize,\n\n\t\t\toriginalValueOffset = stride * this._origIndex;\n\n\t\tbinding.getValue( buffer, originalValueOffset );\n\n\t\t// accu[0..1] := orig -- initially detect changes against the original\n\t\tfor ( let i = stride, e = originalValueOffset; i !== e; ++ i ) {\n\n\t\t\tbuffer[ i ] = buffer[ originalValueOffset + ( i % stride ) ];\n\n\t\t}\n\n\t\t// Add to identity for additive\n\t\tthis._setIdentity();\n\n\t\tthis.cumulativeWeight = 0;\n\t\tthis.cumulativeWeightAdditive = 0;\n\n\t},\n\n\t// apply the state previously taken via 'saveOriginalState' to the binding\n\trestoreOriginalState: function () {\n\n\t\tconst originalValueOffset = this.valueSize * 3;\n\t\tthis.binding.setValue( this.buffer, originalValueOffset );\n\n\t},\n\n\t_setAdditiveIdentityNumeric: function () {\n\n\t\tconst startIndex = this._addIndex * this.valueSize;\n\t\tconst endIndex = startIndex + this.valueSize;\n\n\t\tfor ( let i = startIndex; i < endIndex; i ++ ) {\n\n\t\t\tthis.buffer[ i ] = 0;\n\n\t\t}\n\n\t},\n\n\t_setAdditiveIdentityQuaternion: function () {\n\n\t\tthis._setAdditiveIdentityNumeric();\n\t\tthis.buffer[ this._addIndex * this.valueSize + 3 ] = 1;\n\n\t},\n\n\t_setAdditiveIdentityOther: function () {\n\n\t\tconst startIndex = this._origIndex * this.valueSize;\n\t\tconst targetIndex = this._addIndex * this.valueSize;\n\n\t\tfor ( let i = 0; i < this.valueSize; i ++ ) {\n\n\t\t\tthis.buffer[ targetIndex + i ] = this.buffer[ startIndex + i ];\n\n\t\t}\n\n\t},\n\n\n\t// mix functions\n\n\t_select: function ( buffer, dstOffset, srcOffset, t, stride ) {\n\n\t\tif ( t >= 0.5 ) {\n\n\t\t\tfor ( let i = 0; i !== stride; ++ i ) {\n\n\t\t\t\tbuffer[ dstOffset + i ] = buffer[ srcOffset + i ];\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\t_slerp: function ( buffer, dstOffset, srcOffset, t ) {\n\n\t\tQuaternion.slerpFlat( buffer, dstOffset, buffer, dstOffset, buffer, srcOffset, t );\n\n\t},\n\n\t_slerpAdditive: function ( buffer, dstOffset, srcOffset, t, stride ) {\n\n\t\tconst workOffset = this._workIndex * stride;\n\n\t\t// Store result in intermediate buffer offset\n\t\tQuaternion.multiplyQuaternionsFlat( buffer, workOffset, buffer, dstOffset, buffer, srcOffset );\n\n\t\t// Slerp to the intermediate result\n\t\tQuaternion.slerpFlat( buffer, dstOffset, buffer, dstOffset, buffer, workOffset, t );\n\n\t},\n\n\t_lerp: function ( buffer, dstOffset, srcOffset, t, stride ) {\n\n\t\tconst s = 1 - t;\n\n\t\tfor ( let i = 0; i !== stride; ++ i ) {\n\n\t\t\tconst j = dstOffset + i;\n\n\t\t\tbuffer[ j ] = buffer[ j ] * s + buffer[ srcOffset + i ] * t;\n\n\t\t}\n\n\t},\n\n\t_lerpAdditive: function ( buffer, dstOffset, srcOffset, t, stride ) {\n\n\t\tfor ( let i = 0; i !== stride; ++ i ) {\n\n\t\t\tconst j = dstOffset + i;\n\n\t\t\tbuffer[ j ] = buffer[ j ] + buffer[ srcOffset + i ] * t;\n\n\t\t}\n\n\t}\n\n} );\n\n// Characters [].:/ are reserved for track binding syntax.\nconst _RESERVED_CHARS_RE = '\\\\[\\\\]\\\\.:\\\\/';\nconst _reservedRe = new RegExp( '[' + _RESERVED_CHARS_RE + ']', 'g' );\n\n// Attempts to allow node names from any language. ES5's `\\w` regexp matches\n// only latin characters, and the unicode \\p{L} is not yet supported. So\n// instead, we exclude reserved characters and match everything else.\nconst _wordChar = '[^' + _RESERVED_CHARS_RE + ']';\nconst _wordCharOrDot = '[^' + _RESERVED_CHARS_RE.replace( '\\\\.', '' ) + ']';\n\n// Parent directories, delimited by '/' or ':'. Currently unused, but must\n// be matched to parse the rest of the track name.\nconst _directoryRe = /((?:WC+[\\/:])*)/.source.replace( 'WC', _wordChar );\n\n// Target node. May contain word characters (a-zA-Z0-9_) and '.' or '-'.\nconst _nodeRe = /(WCOD+)?/.source.replace( 'WCOD', _wordCharOrDot );\n\n// Object on target node, and accessor. May not contain reserved\n// characters. Accessor may contain any character except closing bracket.\nconst _objectRe = /(?:\\.(WC+)(?:\\[(.+)\\])?)?/.source.replace( 'WC', _wordChar );\n\n// Property and accessor. May not contain reserved characters. Accessor may\n// contain any non-bracket characters.\nconst _propertyRe = /\\.(WC+)(?:\\[(.+)\\])?/.source.replace( 'WC', _wordChar );\n\nconst _trackRe = new RegExp( ''\n\t+ '^'\n\t+ _directoryRe\n\t+ _nodeRe\n\t+ _objectRe\n\t+ _propertyRe\n\t+ '$'\n);\n\nconst _supportedObjectNames = [ 'material', 'materials', 'bones' ];\n\nfunction Composite( targetGroup, path, optionalParsedPath ) {\n\n\tconst parsedPath = optionalParsedPath || PropertyBinding.parseTrackName( path );\n\n\tthis._targetGroup = targetGroup;\n\tthis._bindings = targetGroup.subscribe_( path, parsedPath );\n\n}\n\nObject.assign( Composite.prototype, {\n\n\tgetValue: function ( array, offset ) {\n\n\t\tthis.bind(); // bind all binding\n\n\t\tconst firstValidIndex = this._targetGroup.nCachedObjects_,\n\t\t\tbinding = this._bindings[ firstValidIndex ];\n\n\t\t// and only call .getValue on the first\n\t\tif ( binding !== undefined ) binding.getValue( array, offset );\n\n\t},\n\n\tsetValue: function ( array, offset ) {\n\n\t\tconst bindings = this._bindings;\n\n\t\tfor ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {\n\n\t\t\tbindings[ i ].setValue( array, offset );\n\n\t\t}\n\n\t},\n\n\tbind: function () {\n\n\t\tconst bindings = this._bindings;\n\n\t\tfor ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {\n\n\t\t\tbindings[ i ].bind();\n\n\t\t}\n\n\t},\n\n\tunbind: function () {\n\n\t\tconst bindings = this._bindings;\n\n\t\tfor ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {\n\n\t\t\tbindings[ i ].unbind();\n\n\t\t}\n\n\t}\n\n} );\n\n\nfunction PropertyBinding( rootNode, path, parsedPath ) {\n\n\tthis.path = path;\n\tthis.parsedPath = parsedPath || PropertyBinding.parseTrackName( path );\n\n\tthis.node = PropertyBinding.findNode( rootNode, this.parsedPath.nodeName ) || rootNode;\n\n\tthis.rootNode = rootNode;\n\n}\n\nObject.assign( PropertyBinding, {\n\n\tComposite: Composite,\n\n\tcreate: function ( root, path, parsedPath ) {\n\n\t\tif ( ! ( root && root.isAnimationObjectGroup ) ) {\n\n\t\t\treturn new PropertyBinding( root, path, parsedPath );\n\n\t\t} else {\n\n\t\t\treturn new PropertyBinding.Composite( root, path, parsedPath );\n\n\t\t}\n\n\t},\n\n\t/**\n\t * Replaces spaces with underscores and removes unsupported characters from\n\t * node names, to ensure compatibility with parseTrackName().\n\t *\n\t * @param {string} name Node name to be sanitized.\n\t * @return {string}\n\t */\n\tsanitizeNodeName: function ( name ) {\n\n\t\treturn name.replace( /\\s/g, '_' ).replace( _reservedRe, '' );\n\n\t},\n\n\tparseTrackName: function ( trackName ) {\n\n\t\tconst matches = _trackRe.exec( trackName );\n\n\t\tif ( ! matches ) {\n\n\t\t\tthrow new Error( 'PropertyBinding: Cannot parse trackName: ' + trackName );\n\n\t\t}\n\n\t\tconst results = {\n\t\t\t// directoryName: matches[ 1 ], // (tschw) currently unused\n\t\t\tnodeName: matches[ 2 ],\n\t\t\tobjectName: matches[ 3 ],\n\t\t\tobjectIndex: matches[ 4 ],\n\t\t\tpropertyName: matches[ 5 ], // required\n\t\t\tpropertyIndex: matches[ 6 ]\n\t\t};\n\n\t\tconst lastDot = results.nodeName && results.nodeName.lastIndexOf( '.' );\n\n\t\tif ( lastDot !== undefined && lastDot !== - 1 ) {\n\n\t\t\tconst objectName = results.nodeName.substring( lastDot + 1 );\n\n\t\t\t// Object names must be checked against an allowlist. Otherwise, there\n\t\t\t// is no way to parse 'foo.bar.baz': 'baz' must be a property, but\n\t\t\t// 'bar' could be the objectName, or part of a nodeName (which can\n\t\t\t// include '.' characters).\n\t\t\tif ( _supportedObjectNames.indexOf( objectName ) !== - 1 ) {\n\n\t\t\t\tresults.nodeName = results.nodeName.substring( 0, lastDot );\n\t\t\t\tresults.objectName = objectName;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( results.propertyName === null || results.propertyName.length === 0 ) {\n\n\t\t\tthrow new Error( 'PropertyBinding: can not parse propertyName from trackName: ' + trackName );\n\n\t\t}\n\n\t\treturn results;\n\n\t},\n\n\tfindNode: function ( root, nodeName ) {\n\n\t\tif ( ! nodeName || nodeName === '' || nodeName === '.' || nodeName === - 1 || nodeName === root.name || nodeName === root.uuid ) {\n\n\t\t\treturn root;\n\n\t\t}\n\n\t\t// search into skeleton bones.\n\t\tif ( root.skeleton ) {\n\n\t\t\tconst bone = root.skeleton.getBoneByName( nodeName );\n\n\t\t\tif ( bone !== undefined ) {\n\n\t\t\t\treturn bone;\n\n\t\t\t}\n\n\t\t}\n\n\t\t// search into node subtree.\n\t\tif ( root.children ) {\n\n\t\t\tconst searchNodeSubtree = function ( children ) {\n\n\t\t\t\tfor ( let i = 0; i < children.length; i ++ ) {\n\n\t\t\t\t\tconst childNode = children[ i ];\n\n\t\t\t\t\tif ( childNode.name === nodeName || childNode.uuid === nodeName ) {\n\n\t\t\t\t\t\treturn childNode;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tconst result = searchNodeSubtree( childNode.children );\n\n\t\t\t\t\tif ( result ) return result;\n\n\t\t\t\t}\n\n\t\t\t\treturn null;\n\n\t\t\t};\n\n\t\t\tconst subTreeNode = searchNodeSubtree( root.children );\n\n\t\t\tif ( subTreeNode ) {\n\n\t\t\t\treturn subTreeNode;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn null;\n\n\t}\n\n} );\n\nObject.assign( PropertyBinding.prototype, { // prototype, continued\n\n\t// these are used to \"bind\" a nonexistent property\n\t_getValue_unavailable: function () {},\n\t_setValue_unavailable: function () {},\n\n\tBindingType: {\n\t\tDirect: 0,\n\t\tEntireArray: 1,\n\t\tArrayElement: 2,\n\t\tHasFromToArray: 3\n\t},\n\n\tVersioning: {\n\t\tNone: 0,\n\t\tNeedsUpdate: 1,\n\t\tMatrixWorldNeedsUpdate: 2\n\t},\n\n\tGetterByBindingType: [\n\n\t\tfunction getValue_direct( buffer, offset ) {\n\n\t\t\tbuffer[ offset ] = this.node[ this.propertyName ];\n\n\t\t},\n\n\t\tfunction getValue_array( buffer, offset ) {\n\n\t\t\tconst source = this.resolvedProperty;\n\n\t\t\tfor ( let i = 0, n = source.length; i !== n; ++ i ) {\n\n\t\t\t\tbuffer[ offset ++ ] = source[ i ];\n\n\t\t\t}\n\n\t\t},\n\n\t\tfunction getValue_arrayElement( buffer, offset ) {\n\n\t\t\tbuffer[ offset ] = this.resolvedProperty[ this.propertyIndex ];\n\n\t\t},\n\n\t\tfunction getValue_toArray( buffer, offset ) {\n\n\t\t\tthis.resolvedProperty.toArray( buffer, offset );\n\n\t\t}\n\n\t],\n\n\tSetterByBindingTypeAndVersioning: [\n\n\t\t[\n\t\t\t// Direct\n\n\t\t\tfunction setValue_direct( buffer, offset ) {\n\n\t\t\t\tthis.targetObject[ this.propertyName ] = buffer[ offset ];\n\n\t\t\t},\n\n\t\t\tfunction setValue_direct_setNeedsUpdate( buffer, offset ) {\n\n\t\t\t\tthis.targetObject[ this.propertyName ] = buffer[ offset ];\n\t\t\t\tthis.targetObject.needsUpdate = true;\n\n\t\t\t},\n\n\t\t\tfunction setValue_direct_setMatrixWorldNeedsUpdate( buffer, offset ) {\n\n\t\t\t\tthis.targetObject[ this.propertyName ] = buffer[ offset ];\n\t\t\t\tthis.targetObject.matrixWorldNeedsUpdate = true;\n\n\t\t\t}\n\n\t\t], [\n\n\t\t\t// EntireArray\n\n\t\t\tfunction setValue_array( buffer, offset ) {\n\n\t\t\t\tconst dest = this.resolvedProperty;\n\n\t\t\t\tfor ( let i = 0, n = dest.length; i !== n; ++ i ) {\n\n\t\t\t\t\tdest[ i ] = buffer[ offset ++ ];\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tfunction setValue_array_setNeedsUpdate( buffer, offset ) {\n\n\t\t\t\tconst dest = this.resolvedProperty;\n\n\t\t\t\tfor ( let i = 0, n = dest.length; i !== n; ++ i ) {\n\n\t\t\t\t\tdest[ i ] = buffer[ offset ++ ];\n\n\t\t\t\t}\n\n\t\t\t\tthis.targetObject.needsUpdate = true;\n\n\t\t\t},\n\n\t\t\tfunction setValue_array_setMatrixWorldNeedsUpdate( buffer, offset ) {\n\n\t\t\t\tconst dest = this.resolvedProperty;\n\n\t\t\t\tfor ( let i = 0, n = dest.length; i !== n; ++ i ) {\n\n\t\t\t\t\tdest[ i ] = buffer[ offset ++ ];\n\n\t\t\t\t}\n\n\t\t\t\tthis.targetObject.matrixWorldNeedsUpdate = true;\n\n\t\t\t}\n\n\t\t], [\n\n\t\t\t// ArrayElement\n\n\t\t\tfunction setValue_arrayElement( buffer, offset ) {\n\n\t\t\t\tthis.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];\n\n\t\t\t},\n\n\t\t\tfunction setValue_arrayElement_setNeedsUpdate( buffer, offset ) {\n\n\t\t\t\tthis.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];\n\t\t\t\tthis.targetObject.needsUpdate = true;\n\n\t\t\t},\n\n\t\t\tfunction setValue_arrayElement_setMatrixWorldNeedsUpdate( buffer, offset ) {\n\n\t\t\t\tthis.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];\n\t\t\t\tthis.targetObject.matrixWorldNeedsUpdate = true;\n\n\t\t\t}\n\n\t\t], [\n\n\t\t\t// HasToFromArray\n\n\t\t\tfunction setValue_fromArray( buffer, offset ) {\n\n\t\t\t\tthis.resolvedProperty.fromArray( buffer, offset );\n\n\t\t\t},\n\n\t\t\tfunction setValue_fromArray_setNeedsUpdate( buffer, offset ) {\n\n\t\t\t\tthis.resolvedProperty.fromArray( buffer, offset );\n\t\t\t\tthis.targetObject.needsUpdate = true;\n\n\t\t\t},\n\n\t\t\tfunction setValue_fromArray_setMatrixWorldNeedsUpdate( buffer, offset ) {\n\n\t\t\t\tthis.resolvedProperty.fromArray( buffer, offset );\n\t\t\t\tthis.targetObject.matrixWorldNeedsUpdate = true;\n\n\t\t\t}\n\n\t\t]\n\n\t],\n\n\tgetValue: function getValue_unbound( targetArray, offset ) {\n\n\t\tthis.bind();\n\t\tthis.getValue( targetArray, offset );\n\n\t\t// Note: This class uses a State pattern on a per-method basis:\n\t\t// 'bind' sets 'this.getValue' / 'setValue' and shadows the\n\t\t// prototype version of these methods with one that represents\n\t\t// the bound state. When the property is not found, the methods\n\t\t// become no-ops.\n\n\t},\n\n\tsetValue: function getValue_unbound( sourceArray, offset ) {\n\n\t\tthis.bind();\n\t\tthis.setValue( sourceArray, offset );\n\n\t},\n\n\t// create getter / setter pair for a property in the scene graph\n\tbind: function () {\n\n\t\tlet targetObject = this.node;\n\t\tconst parsedPath = this.parsedPath;\n\n\t\tconst objectName = parsedPath.objectName;\n\t\tconst propertyName = parsedPath.propertyName;\n\t\tlet propertyIndex = parsedPath.propertyIndex;\n\n\t\tif ( ! targetObject ) {\n\n\t\t\ttargetObject = PropertyBinding.findNode( this.rootNode, parsedPath.nodeName ) || this.rootNode;\n\n\t\t\tthis.node = targetObject;\n\n\t\t}\n\n\t\t// set fail state so we can just 'return' on error\n\t\tthis.getValue = this._getValue_unavailable;\n\t\tthis.setValue = this._setValue_unavailable;\n\n\t\t// ensure there is a value node\n\t\tif ( ! targetObject ) {\n\n\t\t\tconsole.error( 'THREE.PropertyBinding: Trying to update node for track: ' + this.path + ' but it wasn\\'t found.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( objectName ) {\n\n\t\t\tlet objectIndex = parsedPath.objectIndex;\n\n\t\t\t// special cases were we need to reach deeper into the hierarchy to get the face materials....\n\t\t\tswitch ( objectName ) {\n\n\t\t\t\tcase 'materials':\n\n\t\t\t\t\tif ( ! targetObject.material ) {\n\n\t\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Can not bind to material as node does not have a material.', this );\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( ! targetObject.material.materials ) {\n\n\t\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Can not bind to material.materials as node.material does not have a materials array.', this );\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t}\n\n\t\t\t\t\ttargetObject = targetObject.material.materials;\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'bones':\n\n\t\t\t\t\tif ( ! targetObject.skeleton ) {\n\n\t\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Can not bind to bones as node does not have a skeleton.', this );\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t}\n\n\t\t\t\t\t// potential future optimization: skip this if propertyIndex is already an integer\n\t\t\t\t\t// and convert the integer string to a true integer.\n\n\t\t\t\t\ttargetObject = targetObject.skeleton.bones;\n\n\t\t\t\t\t// support resolving morphTarget names into indices.\n\t\t\t\t\tfor ( let i = 0; i < targetObject.length; i ++ ) {\n\n\t\t\t\t\t\tif ( targetObject[ i ].name === objectIndex ) {\n\n\t\t\t\t\t\t\tobjectIndex = i;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tdefault:\n\n\t\t\t\t\tif ( targetObject[ objectName ] === undefined ) {\n\n\t\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Can not bind to objectName of node undefined.', this );\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t}\n\n\t\t\t\t\ttargetObject = targetObject[ objectName ];\n\n\t\t\t}\n\n\n\t\t\tif ( objectIndex !== undefined ) {\n\n\t\t\t\tif ( targetObject[ objectIndex ] === undefined ) {\n\n\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Trying to bind to objectIndex of objectName, but is undefined.', this, targetObject );\n\t\t\t\t\treturn;\n\n\t\t\t\t}\n\n\t\t\t\ttargetObject = targetObject[ objectIndex ];\n\n\t\t\t}\n\n\t\t}\n\n\t\t// resolve property\n\t\tconst nodeProperty = targetObject[ propertyName ];\n\n\t\tif ( nodeProperty === undefined ) {\n\n\t\t\tconst nodeName = parsedPath.nodeName;\n\n\t\t\tconsole.error( 'THREE.PropertyBinding: Trying to update property for track: ' + nodeName +\n\t\t\t\t'.' + propertyName + ' but it wasn\\'t found.', targetObject );\n\t\t\treturn;\n\n\t\t}\n\n\t\t// determine versioning scheme\n\t\tlet versioning = this.Versioning.None;\n\n\t\tthis.targetObject = targetObject;\n\n\t\tif ( targetObject.needsUpdate !== undefined ) { // material\n\n\t\t\tversioning = this.Versioning.NeedsUpdate;\n\n\t\t} else if ( targetObject.matrixWorldNeedsUpdate !== undefined ) { // node transform\n\n\t\t\tversioning = this.Versioning.MatrixWorldNeedsUpdate;\n\n\t\t}\n\n\t\t// determine how the property gets bound\n\t\tlet bindingType = this.BindingType.Direct;\n\n\t\tif ( propertyIndex !== undefined ) {\n\n\t\t\t// access a sub element of the property array (only primitives are supported right now)\n\n\t\t\tif ( propertyName === 'morphTargetInfluences' ) {\n\n\t\t\t\t// potential optimization, skip this if propertyIndex is already an integer, and convert the integer string to a true integer.\n\n\t\t\t\t// support resolving morphTarget names into indices.\n\t\t\t\tif ( ! targetObject.geometry ) {\n\n\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.', this );\n\t\t\t\t\treturn;\n\n\t\t\t\t}\n\n\t\t\t\tif ( targetObject.geometry.isBufferGeometry ) {\n\n\t\t\t\t\tif ( ! targetObject.geometry.morphAttributes ) {\n\n\t\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.morphAttributes.', this );\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( targetObject.morphTargetDictionary[ propertyIndex ] !== undefined ) {\n\n\t\t\t\t\t\tpropertyIndex = targetObject.morphTargetDictionary[ propertyIndex ];\n\n\t\t\t\t\t}\n\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences on THREE.Geometry. Use THREE.BufferGeometry instead.', this );\n\t\t\t\t\treturn;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tbindingType = this.BindingType.ArrayElement;\n\n\t\t\tthis.resolvedProperty = nodeProperty;\n\t\t\tthis.propertyIndex = propertyIndex;\n\n\t\t} else if ( nodeProperty.fromArray !== undefined && nodeProperty.toArray !== undefined ) {\n\n\t\t\t// must use copy for Object3D.Euler/Quaternion\n\n\t\t\tbindingType = this.BindingType.HasFromToArray;\n\n\t\t\tthis.resolvedProperty = nodeProperty;\n\n\t\t} else if ( Array.isArray( nodeProperty ) ) {\n\n\t\t\tbindingType = this.BindingType.EntireArray;\n\n\t\t\tthis.resolvedProperty = nodeProperty;\n\n\t\t} else {\n\n\t\t\tthis.propertyName = propertyName;\n\n\t\t}\n\n\t\t// select getter / setter\n\t\tthis.getValue = this.GetterByBindingType[ bindingType ];\n\t\tthis.setValue = this.SetterByBindingTypeAndVersioning[ bindingType ][ versioning ];\n\n\t},\n\n\tunbind: function () {\n\n\t\tthis.node = null;\n\n\t\t// back to the prototype version of getValue / setValue\n\t\t// note: avoiding to mutate the shape of 'this' via 'delete'\n\t\tthis.getValue = this._getValue_unbound;\n\t\tthis.setValue = this._setValue_unbound;\n\n\t}\n\n} );\n\n// DECLARE ALIAS AFTER assign prototype\nObject.assign( PropertyBinding.prototype, {\n\n\t// initial state of these methods that calls 'bind'\n\t_getValue_unbound: PropertyBinding.prototype.getValue,\n\t_setValue_unbound: PropertyBinding.prototype.setValue,\n\n} );\n\n/**\n *\n * A group of objects that receives a shared animation state.\n *\n * Usage:\n *\n *  - Add objects you would otherwise pass as 'root' to the\n *    constructor or the .clipAction method of AnimationMixer.\n *\n *  - Instead pass this object as 'root'.\n *\n *  - You can also add and remove objects later when the mixer\n *    is running.\n *\n * Note:\n *\n *    Objects of this class appear as one object to the mixer,\n *    so cache control of the individual objects must be done\n *    on the group.\n *\n * Limitation:\n *\n *  - The animated properties must be compatible among the\n *    all objects in the group.\n *\n *  - A single property can either be controlled through a\n *    target group or directly, but not both.\n */\n\nfunction AnimationObjectGroup() {\n\n\tthis.uuid = MathUtils.generateUUID();\n\n\t// cached objects followed by the active ones\n\tthis._objects = Array.prototype.slice.call( arguments );\n\n\tthis.nCachedObjects_ = 0; // threshold\n\t// note: read by PropertyBinding.Composite\n\n\tconst indices = {};\n\tthis._indicesByUUID = indices; // for bookkeeping\n\n\tfor ( let i = 0, n = arguments.length; i !== n; ++ i ) {\n\n\t\tindices[ arguments[ i ].uuid ] = i;\n\n\t}\n\n\tthis._paths = []; // inside: string\n\tthis._parsedPaths = []; // inside: { we don't care, here }\n\tthis._bindings = []; // inside: Array< PropertyBinding >\n\tthis._bindingsIndicesByPath = {}; // inside: indices in these arrays\n\n\tconst scope = this;\n\n\tthis.stats = {\n\n\t\tobjects: {\n\t\t\tget total() {\n\n\t\t\t\treturn scope._objects.length;\n\n\t\t\t},\n\t\t\tget inUse() {\n\n\t\t\t\treturn this.total - scope.nCachedObjects_;\n\n\t\t\t}\n\t\t},\n\t\tget bindingsPerObject() {\n\n\t\t\treturn scope._bindings.length;\n\n\t\t}\n\n\t};\n\n}\n\nObject.assign( AnimationObjectGroup.prototype, {\n\n\tisAnimationObjectGroup: true,\n\n\tadd: function () {\n\n\t\tconst objects = this._objects,\n\t\t\tindicesByUUID = this._indicesByUUID,\n\t\t\tpaths = this._paths,\n\t\t\tparsedPaths = this._parsedPaths,\n\t\t\tbindings = this._bindings,\n\t\t\tnBindings = bindings.length;\n\n\t\tlet knownObject = undefined,\n\t\t\tnObjects = objects.length,\n\t\t\tnCachedObjects = this.nCachedObjects_;\n\n\t\tfor ( let i = 0, n = arguments.length; i !== n; ++ i ) {\n\n\t\t\tconst object = arguments[ i ],\n\t\t\t\tuuid = object.uuid;\n\t\t\tlet index = indicesByUUID[ uuid ];\n\n\t\t\tif ( index === undefined ) {\n\n\t\t\t\t// unknown object -> add it to the ACTIVE region\n\n\t\t\t\tindex = nObjects ++;\n\t\t\t\tindicesByUUID[ uuid ] = index;\n\t\t\t\tobjects.push( object );\n\n\t\t\t\t// accounting is done, now do the same for all bindings\n\n\t\t\t\tfor ( let j = 0, m = nBindings; j !== m; ++ j ) {\n\n\t\t\t\t\tbindings[ j ].push( new PropertyBinding( object, paths[ j ], parsedPaths[ j ] ) );\n\n\t\t\t\t}\n\n\t\t\t} else if ( index < nCachedObjects ) {\n\n\t\t\t\tknownObject = objects[ index ];\n\n\t\t\t\t// move existing object to the ACTIVE region\n\n\t\t\t\tconst firstActiveIndex = -- nCachedObjects,\n\t\t\t\t\tlastCachedObject = objects[ firstActiveIndex ];\n\n\t\t\t\tindicesByUUID[ lastCachedObject.uuid ] = index;\n\t\t\t\tobjects[ index ] = lastCachedObject;\n\n\t\t\t\tindicesByUUID[ uuid ] = firstActiveIndex;\n\t\t\t\tobjects[ firstActiveIndex ] = object;\n\n\t\t\t\t// accounting is done, now do the same for all bindings\n\n\t\t\t\tfor ( let j = 0, m = nBindings; j !== m; ++ j ) {\n\n\t\t\t\t\tconst bindingsForPath = bindings[ j ],\n\t\t\t\t\t\tlastCached = bindingsForPath[ firstActiveIndex ];\n\n\t\t\t\t\tlet binding = bindingsForPath[ index ];\n\n\t\t\t\t\tbindingsForPath[ index ] = lastCached;\n\n\t\t\t\t\tif ( binding === undefined ) {\n\n\t\t\t\t\t\t// since we do not bother to create new bindings\n\t\t\t\t\t\t// for objects that are cached, the binding may\n\t\t\t\t\t\t// or may not exist\n\n\t\t\t\t\t\tbinding = new PropertyBinding( object, paths[ j ], parsedPaths[ j ] );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbindingsForPath[ firstActiveIndex ] = binding;\n\n\t\t\t\t}\n\n\t\t\t} else if ( objects[ index ] !== knownObject ) {\n\n\t\t\t\tconsole.error( 'THREE.AnimationObjectGroup: Different objects with the same UUID ' +\n\t\t\t\t\t'detected. Clean the caches or recreate your infrastructure when reloading scenes.' );\n\n\t\t\t} // else the object is already where we want it to be\n\n\t\t} // for arguments\n\n\t\tthis.nCachedObjects_ = nCachedObjects;\n\n\t},\n\n\tremove: function () {\n\n\t\tconst objects = this._objects,\n\t\t\tindicesByUUID = this._indicesByUUID,\n\t\t\tbindings = this._bindings,\n\t\t\tnBindings = bindings.length;\n\n\t\tlet nCachedObjects = this.nCachedObjects_;\n\n\t\tfor ( let i = 0, n = arguments.length; i !== n; ++ i ) {\n\n\t\t\tconst object = arguments[ i ],\n\t\t\t\tuuid = object.uuid,\n\t\t\t\tindex = indicesByUUID[ uuid ];\n\n\t\t\tif ( index !== undefined && index >= nCachedObjects ) {\n\n\t\t\t\t// move existing object into the CACHED region\n\n\t\t\t\tconst lastCachedIndex = nCachedObjects ++,\n\t\t\t\t\tfirstActiveObject = objects[ lastCachedIndex ];\n\n\t\t\t\tindicesByUUID[ firstActiveObject.uuid ] = index;\n\t\t\t\tobjects[ index ] = firstActiveObject;\n\n\t\t\t\tindicesByUUID[ uuid ] = lastCachedIndex;\n\t\t\t\tobjects[ lastCachedIndex ] = object;\n\n\t\t\t\t// accounting is done, now do the same for all bindings\n\n\t\t\t\tfor ( let j = 0, m = nBindings; j !== m; ++ j ) {\n\n\t\t\t\t\tconst bindingsForPath = bindings[ j ],\n\t\t\t\t\t\tfirstActive = bindingsForPath[ lastCachedIndex ],\n\t\t\t\t\t\tbinding = bindingsForPath[ index ];\n\n\t\t\t\t\tbindingsForPath[ index ] = firstActive;\n\t\t\t\t\tbindingsForPath[ lastCachedIndex ] = binding;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} // for arguments\n\n\t\tthis.nCachedObjects_ = nCachedObjects;\n\n\t},\n\n\t// remove & forget\n\tuncache: function () {\n\n\t\tconst objects = this._objects,\n\t\t\tindicesByUUID = this._indicesByUUID,\n\t\t\tbindings = this._bindings,\n\t\t\tnBindings = bindings.length;\n\n\t\tlet nCachedObjects = this.nCachedObjects_,\n\t\t\tnObjects = objects.length;\n\n\t\tfor ( let i = 0, n = arguments.length; i !== n; ++ i ) {\n\n\t\t\tconst object = arguments[ i ],\n\t\t\t\tuuid = object.uuid,\n\t\t\t\tindex = indicesByUUID[ uuid ];\n\n\t\t\tif ( index !== undefined ) {\n\n\t\t\t\tdelete indicesByUUID[ uuid ];\n\n\t\t\t\tif ( index < nCachedObjects ) {\n\n\t\t\t\t\t// object is cached, shrink the CACHED region\n\n\t\t\t\t\tconst firstActiveIndex = -- nCachedObjects,\n\t\t\t\t\t\tlastCachedObject = objects[ firstActiveIndex ],\n\t\t\t\t\t\tlastIndex = -- nObjects,\n\t\t\t\t\t\tlastObject = objects[ lastIndex ];\n\n\t\t\t\t\t// last cached object takes this object's place\n\t\t\t\t\tindicesByUUID[ lastCachedObject.uuid ] = index;\n\t\t\t\t\tobjects[ index ] = lastCachedObject;\n\n\t\t\t\t\t// last object goes to the activated slot and pop\n\t\t\t\t\tindicesByUUID[ lastObject.uuid ] = firstActiveIndex;\n\t\t\t\t\tobjects[ firstActiveIndex ] = lastObject;\n\t\t\t\t\tobjects.pop();\n\n\t\t\t\t\t// accounting is done, now do the same for all bindings\n\n\t\t\t\t\tfor ( let j = 0, m = nBindings; j !== m; ++ j ) {\n\n\t\t\t\t\t\tconst bindingsForPath = bindings[ j ],\n\t\t\t\t\t\t\tlastCached = bindingsForPath[ firstActiveIndex ],\n\t\t\t\t\t\t\tlast = bindingsForPath[ lastIndex ];\n\n\t\t\t\t\t\tbindingsForPath[ index ] = lastCached;\n\t\t\t\t\t\tbindingsForPath[ firstActiveIndex ] = last;\n\t\t\t\t\t\tbindingsForPath.pop();\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// object is active, just swap with the last and pop\n\n\t\t\t\t\tconst lastIndex = -- nObjects,\n\t\t\t\t\t\tlastObject = objects[ lastIndex ];\n\n\t\t\t\t\tif ( lastIndex > 0 ) {\n\n\t\t\t\t\t\tindicesByUUID[ lastObject.uuid ] = index;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tobjects[ index ] = lastObject;\n\t\t\t\t\tobjects.pop();\n\n\t\t\t\t\t// accounting is done, now do the same for all bindings\n\n\t\t\t\t\tfor ( let j = 0, m = nBindings; j !== m; ++ j ) {\n\n\t\t\t\t\t\tconst bindingsForPath = bindings[ j ];\n\n\t\t\t\t\t\tbindingsForPath[ index ] = bindingsForPath[ lastIndex ];\n\t\t\t\t\t\tbindingsForPath.pop();\n\n\t\t\t\t\t}\n\n\t\t\t\t} // cached or active\n\n\t\t\t} // if object is known\n\n\t\t} // for arguments\n\n\t\tthis.nCachedObjects_ = nCachedObjects;\n\n\t},\n\n\t// Internal interface used by befriended PropertyBinding.Composite:\n\n\tsubscribe_: function ( path, parsedPath ) {\n\n\t\t// returns an array of bindings for the given path that is changed\n\t\t// according to the contained objects in the group\n\n\t\tconst indicesByPath = this._bindingsIndicesByPath;\n\t\tlet index = indicesByPath[ path ];\n\t\tconst bindings = this._bindings;\n\n\t\tif ( index !== undefined ) return bindings[ index ];\n\n\t\tconst paths = this._paths,\n\t\t\tparsedPaths = this._parsedPaths,\n\t\t\tobjects = this._objects,\n\t\t\tnObjects = objects.length,\n\t\t\tnCachedObjects = this.nCachedObjects_,\n\t\t\tbindingsForPath = new Array( nObjects );\n\n\t\tindex = bindings.length;\n\n\t\tindicesByPath[ path ] = index;\n\n\t\tpaths.push( path );\n\t\tparsedPaths.push( parsedPath );\n\t\tbindings.push( bindingsForPath );\n\n\t\tfor ( let i = nCachedObjects, n = objects.length; i !== n; ++ i ) {\n\n\t\t\tconst object = objects[ i ];\n\t\t\tbindingsForPath[ i ] = new PropertyBinding( object, path, parsedPath );\n\n\t\t}\n\n\t\treturn bindingsForPath;\n\n\t},\n\n\tunsubscribe_: function ( path ) {\n\n\t\t// tells the group to forget about a property path and no longer\n\t\t// update the array previously obtained with 'subscribe_'\n\n\t\tconst indicesByPath = this._bindingsIndicesByPath,\n\t\t\tindex = indicesByPath[ path ];\n\n\t\tif ( index !== undefined ) {\n\n\t\t\tconst paths = this._paths,\n\t\t\t\tparsedPaths = this._parsedPaths,\n\t\t\t\tbindings = this._bindings,\n\t\t\t\tlastBindingsIndex = bindings.length - 1,\n\t\t\t\tlastBindings = bindings[ lastBindingsIndex ],\n\t\t\t\tlastBindingsPath = path[ lastBindingsIndex ];\n\n\t\t\tindicesByPath[ lastBindingsPath ] = index;\n\n\t\t\tbindings[ index ] = lastBindings;\n\t\t\tbindings.pop();\n\n\t\t\tparsedPaths[ index ] = parsedPaths[ lastBindingsIndex ];\n\t\t\tparsedPaths.pop();\n\n\t\t\tpaths[ index ] = paths[ lastBindingsIndex ];\n\t\t\tpaths.pop();\n\n\t\t}\n\n\t}\n\n} );\n\nclass AnimationAction {\n\n\tconstructor( mixer, clip, localRoot = null, blendMode = clip.blendMode ) {\n\n\t\tthis._mixer = mixer;\n\t\tthis._clip = clip;\n\t\tthis._localRoot = localRoot;\n\t\tthis.blendMode = blendMode;\n\n\t\tconst tracks = clip.tracks,\n\t\t\tnTracks = tracks.length,\n\t\t\tinterpolants = new Array( nTracks );\n\n\t\tconst interpolantSettings = {\n\t\t\tendingStart: ZeroCurvatureEnding,\n\t\t\tendingEnd: ZeroCurvatureEnding\n\t\t};\n\n\t\tfor ( let i = 0; i !== nTracks; ++ i ) {\n\n\t\t\tconst interpolant = tracks[ i ].createInterpolant( null );\n\t\t\tinterpolants[ i ] = interpolant;\n\t\t\tinterpolant.settings = interpolantSettings;\n\n\t\t}\n\n\t\tthis._interpolantSettings = interpolantSettings;\n\n\t\tthis._interpolants = interpolants; // bound by the mixer\n\n\t\t// inside: PropertyMixer (managed by the mixer)\n\t\tthis._propertyBindings = new Array( nTracks );\n\n\t\tthis._cacheIndex = null; // for the memory manager\n\t\tthis._byClipCacheIndex = null; // for the memory manager\n\n\t\tthis._timeScaleInterpolant = null;\n\t\tthis._weightInterpolant = null;\n\n\t\tthis.loop = LoopRepeat;\n\t\tthis._loopCount = - 1;\n\n\t\t// global mixer time when the action is to be started\n\t\t// it's set back to 'null' upon start of the action\n\t\tthis._startTime = null;\n\n\t\t// scaled local time of the action\n\t\t// gets clamped or wrapped to 0..clip.duration according to loop\n\t\tthis.time = 0;\n\n\t\tthis.timeScale = 1;\n\t\tthis._effectiveTimeScale = 1;\n\n\t\tthis.weight = 1;\n\t\tthis._effectiveWeight = 1;\n\n\t\tthis.repetitions = Infinity; // no. of repetitions when looping\n\n\t\tthis.paused = false; // true -> zero effective time scale\n\t\tthis.enabled = true; // false -> zero effective weight\n\n\t\tthis.clampWhenFinished = false;// keep feeding the last frame?\n\n\t\tthis.zeroSlopeAtStart = true;// for smooth interpolation w/o separate\n\t\tthis.zeroSlopeAtEnd = true;// clips for start, loop and end\n\n\t}\n\n\t// State & Scheduling\n\n\tplay() {\n\n\t\tthis._mixer._activateAction( this );\n\n\t\treturn this;\n\n\t}\n\n\tstop() {\n\n\t\tthis._mixer._deactivateAction( this );\n\n\t\treturn this.reset();\n\n\t}\n\n\treset() {\n\n\t\tthis.paused = false;\n\t\tthis.enabled = true;\n\n\t\tthis.time = 0; // restart clip\n\t\tthis._loopCount = - 1;// forget previous loops\n\t\tthis._startTime = null;// forget scheduling\n\n\t\treturn this.stopFading().stopWarping();\n\n\t}\n\n\tisRunning() {\n\n\t\treturn this.enabled && ! this.paused && this.timeScale !== 0 &&\n\t\t\tthis._startTime === null && this._mixer._isActiveAction( this );\n\n\t}\n\n\t// return true when play has been called\n\tisScheduled() {\n\n\t\treturn this._mixer._isActiveAction( this );\n\n\t}\n\n\tstartAt( time ) {\n\n\t\tthis._startTime = time;\n\n\t\treturn this;\n\n\t}\n\n\tsetLoop( mode, repetitions ) {\n\n\t\tthis.loop = mode;\n\t\tthis.repetitions = repetitions;\n\n\t\treturn this;\n\n\t}\n\n\t// Weight\n\n\t// set the weight stopping any scheduled fading\n\t// although .enabled = false yields an effective weight of zero, this\n\t// method does *not* change .enabled, because it would be confusing\n\tsetEffectiveWeight( weight ) {\n\n\t\tthis.weight = weight;\n\n\t\t// note: same logic as when updated at runtime\n\t\tthis._effectiveWeight = this.enabled ? weight : 0;\n\n\t\treturn this.stopFading();\n\n\t}\n\n\t// return the weight considering fading and .enabled\n\tgetEffectiveWeight() {\n\n\t\treturn this._effectiveWeight;\n\n\t}\n\n\tfadeIn( duration ) {\n\n\t\treturn this._scheduleFading( duration, 0, 1 );\n\n\t}\n\n\tfadeOut( duration ) {\n\n\t\treturn this._scheduleFading( duration, 1, 0 );\n\n\t}\n\n\tcrossFadeFrom( fadeOutAction, duration, warp ) {\n\n\t\tfadeOutAction.fadeOut( duration );\n\t\tthis.fadeIn( duration );\n\n\t\tif ( warp ) {\n\n\t\t\tconst fadeInDuration = this._clip.duration,\n\t\t\t\tfadeOutDuration = fadeOutAction._clip.duration,\n\n\t\t\t\tstartEndRatio = fadeOutDuration / fadeInDuration,\n\t\t\t\tendStartRatio = fadeInDuration / fadeOutDuration;\n\n\t\t\tfadeOutAction.warp( 1.0, startEndRatio, duration );\n\t\t\tthis.warp( endStartRatio, 1.0, duration );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tcrossFadeTo( fadeInAction, duration, warp ) {\n\n\t\treturn fadeInAction.crossFadeFrom( this, duration, warp );\n\n\t}\n\n\tstopFading() {\n\n\t\tconst weightInterpolant = this._weightInterpolant;\n\n\t\tif ( weightInterpolant !== null ) {\n\n\t\t\tthis._weightInterpolant = null;\n\t\t\tthis._mixer._takeBackControlInterpolant( weightInterpolant );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\t// Time Scale Control\n\n\t// set the time scale stopping any scheduled warping\n\t// although .paused = true yields an effective time scale of zero, this\n\t// method does *not* change .paused, because it would be confusing\n\tsetEffectiveTimeScale( timeScale ) {\n\n\t\tthis.timeScale = timeScale;\n\t\tthis._effectiveTimeScale = this.paused ? 0 : timeScale;\n\n\t\treturn this.stopWarping();\n\n\t}\n\n\t// return the time scale considering warping and .paused\n\tgetEffectiveTimeScale() {\n\n\t\treturn this._effectiveTimeScale;\n\n\t}\n\n\tsetDuration( duration ) {\n\n\t\tthis.timeScale = this._clip.duration / duration;\n\n\t\treturn this.stopWarping();\n\n\t}\n\n\tsyncWith( action ) {\n\n\t\tthis.time = action.time;\n\t\tthis.timeScale = action.timeScale;\n\n\t\treturn this.stopWarping();\n\n\t}\n\n\thalt( duration ) {\n\n\t\treturn this.warp( this._effectiveTimeScale, 0, duration );\n\n\t}\n\n\twarp( startTimeScale, endTimeScale, duration ) {\n\n\t\tconst mixer = this._mixer,\n\t\t\tnow = mixer.time,\n\t\t\ttimeScale = this.timeScale;\n\n\t\tlet interpolant = this._timeScaleInterpolant;\n\n\t\tif ( interpolant === null ) {\n\n\t\t\tinterpolant = mixer._lendControlInterpolant();\n\t\t\tthis._timeScaleInterpolant = interpolant;\n\n\t\t}\n\n\t\tconst times = interpolant.parameterPositions,\n\t\t\tvalues = interpolant.sampleValues;\n\n\t\ttimes[ 0 ] = now;\n\t\ttimes[ 1 ] = now + duration;\n\n\t\tvalues[ 0 ] = startTimeScale / timeScale;\n\t\tvalues[ 1 ] = endTimeScale / timeScale;\n\n\t\treturn this;\n\n\t}\n\n\tstopWarping() {\n\n\t\tconst timeScaleInterpolant = this._timeScaleInterpolant;\n\n\t\tif ( timeScaleInterpolant !== null ) {\n\n\t\t\tthis._timeScaleInterpolant = null;\n\t\t\tthis._mixer._takeBackControlInterpolant( timeScaleInterpolant );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\t// Object Accessors\n\n\tgetMixer() {\n\n\t\treturn this._mixer;\n\n\t}\n\n\tgetClip() {\n\n\t\treturn this._clip;\n\n\t}\n\n\tgetRoot() {\n\n\t\treturn this._localRoot || this._mixer._root;\n\n\t}\n\n\t// Interna\n\n\t_update( time, deltaTime, timeDirection, accuIndex ) {\n\n\t\t// called by the mixer\n\n\t\tif ( ! this.enabled ) {\n\n\t\t\t// call ._updateWeight() to update ._effectiveWeight\n\n\t\t\tthis._updateWeight( time );\n\t\t\treturn;\n\n\t\t}\n\n\t\tconst startTime = this._startTime;\n\n\t\tif ( startTime !== null ) {\n\n\t\t\t// check for scheduled start of action\n\n\t\t\tconst timeRunning = ( time - startTime ) * timeDirection;\n\t\t\tif ( timeRunning < 0 || timeDirection === 0 ) {\n\n\t\t\t\treturn; // yet to come / don't decide when delta = 0\n\n\t\t\t}\n\n\t\t\t// start\n\n\t\t\tthis._startTime = null; // unschedule\n\t\t\tdeltaTime = timeDirection * timeRunning;\n\n\t\t}\n\n\t\t// apply time scale and advance time\n\n\t\tdeltaTime *= this._updateTimeScale( time );\n\t\tconst clipTime = this._updateTime( deltaTime );\n\n\t\t// note: _updateTime may disable the action resulting in\n\t\t// an effective weight of 0\n\n\t\tconst weight = this._updateWeight( time );\n\n\t\tif ( weight > 0 ) {\n\n\t\t\tconst interpolants = this._interpolants;\n\t\t\tconst propertyMixers = this._propertyBindings;\n\n\t\t\tswitch ( this.blendMode ) {\n\n\t\t\t\tcase AdditiveAnimationBlendMode:\n\n\t\t\t\t\tfor ( let j = 0, m = interpolants.length; j !== m; ++ j ) {\n\n\t\t\t\t\t\tinterpolants[ j ].evaluate( clipTime );\n\t\t\t\t\t\tpropertyMixers[ j ].accumulateAdditive( weight );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase NormalAnimationBlendMode:\n\t\t\t\tdefault:\n\n\t\t\t\t\tfor ( let j = 0, m = interpolants.length; j !== m; ++ j ) {\n\n\t\t\t\t\t\tinterpolants[ j ].evaluate( clipTime );\n\t\t\t\t\t\tpropertyMixers[ j ].accumulate( accuIndex, weight );\n\n\t\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\t_updateWeight( time ) {\n\n\t\tlet weight = 0;\n\n\t\tif ( this.enabled ) {\n\n\t\t\tweight = this.weight;\n\t\t\tconst interpolant = this._weightInterpolant;\n\n\t\t\tif ( interpolant !== null ) {\n\n\t\t\t\tconst interpolantValue = interpolant.evaluate( time )[ 0 ];\n\n\t\t\t\tweight *= interpolantValue;\n\n\t\t\t\tif ( time > interpolant.parameterPositions[ 1 ] ) {\n\n\t\t\t\t\tthis.stopFading();\n\n\t\t\t\t\tif ( interpolantValue === 0 ) {\n\n\t\t\t\t\t\t// faded out, disable\n\t\t\t\t\t\tthis.enabled = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis._effectiveWeight = weight;\n\t\treturn weight;\n\n\t}\n\n\t_updateTimeScale( time ) {\n\n\t\tlet timeScale = 0;\n\n\t\tif ( ! this.paused ) {\n\n\t\t\ttimeScale = this.timeScale;\n\n\t\t\tconst interpolant = this._timeScaleInterpolant;\n\n\t\t\tif ( interpolant !== null ) {\n\n\t\t\t\tconst interpolantValue = interpolant.evaluate( time )[ 0 ];\n\n\t\t\t\ttimeScale *= interpolantValue;\n\n\t\t\t\tif ( time > interpolant.parameterPositions[ 1 ] ) {\n\n\t\t\t\t\tthis.stopWarping();\n\n\t\t\t\t\tif ( timeScale === 0 ) {\n\n\t\t\t\t\t\t// motion has halted, pause\n\t\t\t\t\t\tthis.paused = true;\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\t// warp done - apply final time scale\n\t\t\t\t\t\tthis.timeScale = timeScale;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis._effectiveTimeScale = timeScale;\n\t\treturn timeScale;\n\n\t}\n\n\t_updateTime( deltaTime ) {\n\n\t\tconst duration = this._clip.duration;\n\t\tconst loop = this.loop;\n\n\t\tlet time = this.time + deltaTime;\n\t\tlet loopCount = this._loopCount;\n\n\t\tconst pingPong = ( loop === LoopPingPong );\n\n\t\tif ( deltaTime === 0 ) {\n\n\t\t\tif ( loopCount === - 1 ) return time;\n\n\t\t\treturn ( pingPong && ( loopCount & 1 ) === 1 ) ? duration - time : time;\n\n\t\t}\n\n\t\tif ( loop === LoopOnce ) {\n\n\t\t\tif ( loopCount === - 1 ) {\n\n\t\t\t\t// just started\n\n\t\t\t\tthis._loopCount = 0;\n\t\t\t\tthis._setEndings( true, true, false );\n\n\t\t\t}\n\n\t\t\thandle_stop: {\n\n\t\t\t\tif ( time >= duration ) {\n\n\t\t\t\t\ttime = duration;\n\n\t\t\t\t} else if ( time < 0 ) {\n\n\t\t\t\t\ttime = 0;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthis.time = time;\n\n\t\t\t\t\tbreak handle_stop;\n\n\t\t\t\t}\n\n\t\t\t\tif ( this.clampWhenFinished ) this.paused = true;\n\t\t\t\telse this.enabled = false;\n\n\t\t\t\tthis.time = time;\n\n\t\t\t\tthis._mixer.dispatchEvent( {\n\t\t\t\t\ttype: 'finished', action: this,\n\t\t\t\t\tdirection: deltaTime < 0 ? - 1 : 1\n\t\t\t\t} );\n\n\t\t\t}\n\n\t\t} else { // repetitive Repeat or PingPong\n\n\t\t\tif ( loopCount === - 1 ) {\n\n\t\t\t\t// just started\n\n\t\t\t\tif ( deltaTime >= 0 ) {\n\n\t\t\t\t\tloopCount = 0;\n\n\t\t\t\t\tthis._setEndings( true, this.repetitions === 0, pingPong );\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// when looping in reverse direction, the initial\n\t\t\t\t\t// transition through zero counts as a repetition,\n\t\t\t\t\t// so leave loopCount at -1\n\n\t\t\t\t\tthis._setEndings( this.repetitions === 0, true, pingPong );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( time >= duration || time < 0 ) {\n\n\t\t\t\t// wrap around\n\n\t\t\t\tconst loopDelta = Math.floor( time / duration ); // signed\n\t\t\t\ttime -= duration * loopDelta;\n\n\t\t\t\tloopCount += Math.abs( loopDelta );\n\n\t\t\t\tconst pending = this.repetitions - loopCount;\n\n\t\t\t\tif ( pending <= 0 ) {\n\n\t\t\t\t\t// have to stop (switch state, clamp time, fire event)\n\n\t\t\t\t\tif ( this.clampWhenFinished ) this.paused = true;\n\t\t\t\t\telse this.enabled = false;\n\n\t\t\t\t\ttime = deltaTime > 0 ? duration : 0;\n\n\t\t\t\t\tthis.time = time;\n\n\t\t\t\t\tthis._mixer.dispatchEvent( {\n\t\t\t\t\t\ttype: 'finished', action: this,\n\t\t\t\t\t\tdirection: deltaTime > 0 ? 1 : - 1\n\t\t\t\t\t} );\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// keep running\n\n\t\t\t\t\tif ( pending === 1 ) {\n\n\t\t\t\t\t\t// entering the last round\n\n\t\t\t\t\t\tconst atStart = deltaTime < 0;\n\t\t\t\t\t\tthis._setEndings( atStart, ! atStart, pingPong );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tthis._setEndings( false, false, pingPong );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tthis._loopCount = loopCount;\n\n\t\t\t\t\tthis.time = time;\n\n\t\t\t\t\tthis._mixer.dispatchEvent( {\n\t\t\t\t\t\ttype: 'loop', action: this, loopDelta: loopDelta\n\t\t\t\t\t} );\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tthis.time = time;\n\n\t\t\t}\n\n\t\t\tif ( pingPong && ( loopCount & 1 ) === 1 ) {\n\n\t\t\t\t// invert time for the \"pong round\"\n\n\t\t\t\treturn duration - time;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn time;\n\n\t}\n\n\t_setEndings( atStart, atEnd, pingPong ) {\n\n\t\tconst settings = this._interpolantSettings;\n\n\t\tif ( pingPong ) {\n\n\t\t\tsettings.endingStart = ZeroSlopeEnding;\n\t\t\tsettings.endingEnd = ZeroSlopeEnding;\n\n\t\t} else {\n\n\t\t\t// assuming for LoopOnce atStart == atEnd == true\n\n\t\t\tif ( atStart ) {\n\n\t\t\t\tsettings.endingStart = this.zeroSlopeAtStart ? ZeroSlopeEnding : ZeroCurvatureEnding;\n\n\t\t\t} else {\n\n\t\t\t\tsettings.endingStart = WrapAroundEnding;\n\n\t\t\t}\n\n\t\t\tif ( atEnd ) {\n\n\t\t\t\tsettings.endingEnd = this.zeroSlopeAtEnd ? ZeroSlopeEnding : ZeroCurvatureEnding;\n\n\t\t\t} else {\n\n\t\t\t\tsettings.endingEnd \t = WrapAroundEnding;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\t_scheduleFading( duration, weightNow, weightThen ) {\n\n\t\tconst mixer = this._mixer, now = mixer.time;\n\t\tlet interpolant = this._weightInterpolant;\n\n\t\tif ( interpolant === null ) {\n\n\t\t\tinterpolant = mixer._lendControlInterpolant();\n\t\t\tthis._weightInterpolant = interpolant;\n\n\t\t}\n\n\t\tconst times = interpolant.parameterPositions,\n\t\t\tvalues = interpolant.sampleValues;\n\n\t\ttimes[ 0 ] = now;\n\t\tvalues[ 0 ] = weightNow;\n\t\ttimes[ 1 ] = now + duration;\n\t\tvalues[ 1 ] = weightThen;\n\n\t\treturn this;\n\n\t}\n\n}\n\nfunction AnimationMixer( root ) {\n\n\tthis._root = root;\n\tthis._initMemoryManager();\n\tthis._accuIndex = 0;\n\n\tthis.time = 0;\n\n\tthis.timeScale = 1.0;\n\n}\n\nAnimationMixer.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {\n\n\tconstructor: AnimationMixer,\n\n\t_bindAction: function ( action, prototypeAction ) {\n\n\t\tconst root = action._localRoot || this._root,\n\t\t\ttracks = action._clip.tracks,\n\t\t\tnTracks = tracks.length,\n\t\t\tbindings = action._propertyBindings,\n\t\t\tinterpolants = action._interpolants,\n\t\t\trootUuid = root.uuid,\n\t\t\tbindingsByRoot = this._bindingsByRootAndName;\n\n\t\tlet bindingsByName = bindingsByRoot[ rootUuid ];\n\n\t\tif ( bindingsByName === undefined ) {\n\n\t\t\tbindingsByName = {};\n\t\t\tbindingsByRoot[ rootUuid ] = bindingsByName;\n\n\t\t}\n\n\t\tfor ( let i = 0; i !== nTracks; ++ i ) {\n\n\t\t\tconst track = tracks[ i ],\n\t\t\t\ttrackName = track.name;\n\n\t\t\tlet binding = bindingsByName[ trackName ];\n\n\t\t\tif ( binding !== undefined ) {\n\n\t\t\t\tbindings[ i ] = binding;\n\n\t\t\t} else {\n\n\t\t\t\tbinding = bindings[ i ];\n\n\t\t\t\tif ( binding !== undefined ) {\n\n\t\t\t\t\t// existing binding, make sure the cache knows\n\n\t\t\t\t\tif ( binding._cacheIndex === null ) {\n\n\t\t\t\t\t\t++ binding.referenceCount;\n\t\t\t\t\t\tthis._addInactiveBinding( binding, rootUuid, trackName );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tcontinue;\n\n\t\t\t\t}\n\n\t\t\t\tconst path = prototypeAction && prototypeAction.\n\t\t\t\t\t_propertyBindings[ i ].binding.parsedPath;\n\n\t\t\t\tbinding = new PropertyMixer(\n\t\t\t\t\tPropertyBinding.create( root, trackName, path ),\n\t\t\t\t\ttrack.ValueTypeName, track.getValueSize() );\n\n\t\t\t\t++ binding.referenceCount;\n\t\t\t\tthis._addInactiveBinding( binding, rootUuid, trackName );\n\n\t\t\t\tbindings[ i ] = binding;\n\n\t\t\t}\n\n\t\t\tinterpolants[ i ].resultBuffer = binding.buffer;\n\n\t\t}\n\n\t},\n\n\t_activateAction: function ( action ) {\n\n\t\tif ( ! this._isActiveAction( action ) ) {\n\n\t\t\tif ( action._cacheIndex === null ) {\n\n\t\t\t\t// this action has been forgotten by the cache, but the user\n\t\t\t\t// appears to be still using it -> rebind\n\n\t\t\t\tconst rootUuid = ( action._localRoot || this._root ).uuid,\n\t\t\t\t\tclipUuid = action._clip.uuid,\n\t\t\t\t\tactionsForClip = this._actionsByClip[ clipUuid ];\n\n\t\t\t\tthis._bindAction( action,\n\t\t\t\t\tactionsForClip && actionsForClip.knownActions[ 0 ] );\n\n\t\t\t\tthis._addInactiveAction( action, clipUuid, rootUuid );\n\n\t\t\t}\n\n\t\t\tconst bindings = action._propertyBindings;\n\n\t\t\t// increment reference counts / sort out state\n\t\t\tfor ( let i = 0, n = bindings.length; i !== n; ++ i ) {\n\n\t\t\t\tconst binding = bindings[ i ];\n\n\t\t\t\tif ( binding.useCount ++ === 0 ) {\n\n\t\t\t\t\tthis._lendBinding( binding );\n\t\t\t\t\tbinding.saveOriginalState();\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tthis._lendAction( action );\n\n\t\t}\n\n\t},\n\n\t_deactivateAction: function ( action ) {\n\n\t\tif ( this._isActiveAction( action ) ) {\n\n\t\t\tconst bindings = action._propertyBindings;\n\n\t\t\t// decrement reference counts / sort out state\n\t\t\tfor ( let i = 0, n = bindings.length; i !== n; ++ i ) {\n\n\t\t\t\tconst binding = bindings[ i ];\n\n\t\t\t\tif ( -- binding.useCount === 0 ) {\n\n\t\t\t\t\tbinding.restoreOriginalState();\n\t\t\t\t\tthis._takeBackBinding( binding );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tthis._takeBackAction( action );\n\n\t\t}\n\n\t},\n\n\t// Memory manager\n\n\t_initMemoryManager: function () {\n\n\t\tthis._actions = []; // 'nActiveActions' followed by inactive ones\n\t\tthis._nActiveActions = 0;\n\n\t\tthis._actionsByClip = {};\n\t\t// inside:\n\t\t// {\n\t\t// \tknownActions: Array< AnimationAction > - used as prototypes\n\t\t// \tactionByRoot: AnimationAction - lookup\n\t\t// }\n\n\n\t\tthis._bindings = []; // 'nActiveBindings' followed by inactive ones\n\t\tthis._nActiveBindings = 0;\n\n\t\tthis._bindingsByRootAndName = {}; // inside: Map< name, PropertyMixer >\n\n\n\t\tthis._controlInterpolants = []; // same game as above\n\t\tthis._nActiveControlInterpolants = 0;\n\n\t\tconst scope = this;\n\n\t\tthis.stats = {\n\n\t\t\tactions: {\n\t\t\t\tget total() {\n\n\t\t\t\t\treturn scope._actions.length;\n\n\t\t\t\t},\n\t\t\t\tget inUse() {\n\n\t\t\t\t\treturn scope._nActiveActions;\n\n\t\t\t\t}\n\t\t\t},\n\t\t\tbindings: {\n\t\t\t\tget total() {\n\n\t\t\t\t\treturn scope._bindings.length;\n\n\t\t\t\t},\n\t\t\t\tget inUse() {\n\n\t\t\t\t\treturn scope._nActiveBindings;\n\n\t\t\t\t}\n\t\t\t},\n\t\t\tcontrolInterpolants: {\n\t\t\t\tget total() {\n\n\t\t\t\t\treturn scope._controlInterpolants.length;\n\n\t\t\t\t},\n\t\t\t\tget inUse() {\n\n\t\t\t\t\treturn scope._nActiveControlInterpolants;\n\n\t\t\t\t}\n\t\t\t}\n\n\t\t};\n\n\t},\n\n\t// Memory management for AnimationAction objects\n\n\t_isActiveAction: function ( action ) {\n\n\t\tconst index = action._cacheIndex;\n\t\treturn index !== null && index < this._nActiveActions;\n\n\t},\n\n\t_addInactiveAction: function ( action, clipUuid, rootUuid ) {\n\n\t\tconst actions = this._actions,\n\t\t\tactionsByClip = this._actionsByClip;\n\n\t\tlet actionsForClip = actionsByClip[ clipUuid ];\n\n\t\tif ( actionsForClip === undefined ) {\n\n\t\t\tactionsForClip = {\n\n\t\t\t\tknownActions: [ action ],\n\t\t\t\tactionByRoot: {}\n\n\t\t\t};\n\n\t\t\taction._byClipCacheIndex = 0;\n\n\t\t\tactionsByClip[ clipUuid ] = actionsForClip;\n\n\t\t} else {\n\n\t\t\tconst knownActions = actionsForClip.knownActions;\n\n\t\t\taction._byClipCacheIndex = knownActions.length;\n\t\t\tknownActions.push( action );\n\n\t\t}\n\n\t\taction._cacheIndex = actions.length;\n\t\tactions.push( action );\n\n\t\tactionsForClip.actionByRoot[ rootUuid ] = action;\n\n\t},\n\n\t_removeInactiveAction: function ( action ) {\n\n\t\tconst actions = this._actions,\n\t\t\tlastInactiveAction = actions[ actions.length - 1 ],\n\t\t\tcacheIndex = action._cacheIndex;\n\n\t\tlastInactiveAction._cacheIndex = cacheIndex;\n\t\tactions[ cacheIndex ] = lastInactiveAction;\n\t\tactions.pop();\n\n\t\taction._cacheIndex = null;\n\n\n\t\tconst clipUuid = action._clip.uuid,\n\t\t\tactionsByClip = this._actionsByClip,\n\t\t\tactionsForClip = actionsByClip[ clipUuid ],\n\t\t\tknownActionsForClip = actionsForClip.knownActions,\n\n\t\t\tlastKnownAction =\n\t\t\t\tknownActionsForClip[ knownActionsForClip.length - 1 ],\n\n\t\t\tbyClipCacheIndex = action._byClipCacheIndex;\n\n\t\tlastKnownAction._byClipCacheIndex = byClipCacheIndex;\n\t\tknownActionsForClip[ byClipCacheIndex ] = lastKnownAction;\n\t\tknownActionsForClip.pop();\n\n\t\taction._byClipCacheIndex = null;\n\n\n\t\tconst actionByRoot = actionsForClip.actionByRoot,\n\t\t\trootUuid = ( action._localRoot || this._root ).uuid;\n\n\t\tdelete actionByRoot[ rootUuid ];\n\n\t\tif ( knownActionsForClip.length === 0 ) {\n\n\t\t\tdelete actionsByClip[ clipUuid ];\n\n\t\t}\n\n\t\tthis._removeInactiveBindingsForAction( action );\n\n\t},\n\n\t_removeInactiveBindingsForAction: function ( action ) {\n\n\t\tconst bindings = action._propertyBindings;\n\n\t\tfor ( let i = 0, n = bindings.length; i !== n; ++ i ) {\n\n\t\t\tconst binding = bindings[ i ];\n\n\t\t\tif ( -- binding.referenceCount === 0 ) {\n\n\t\t\t\tthis._removeInactiveBinding( binding );\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\t_lendAction: function ( action ) {\n\n\t\t// [ active actions |  inactive actions  ]\n\t\t// [  active actions >| inactive actions ]\n\t\t//                 s        a\n\t\t//                  <-swap->\n\t\t//                 a        s\n\n\t\tconst actions = this._actions,\n\t\t\tprevIndex = action._cacheIndex,\n\n\t\t\tlastActiveIndex = this._nActiveActions ++,\n\n\t\t\tfirstInactiveAction = actions[ lastActiveIndex ];\n\n\t\taction._cacheIndex = lastActiveIndex;\n\t\tactions[ lastActiveIndex ] = action;\n\n\t\tfirstInactiveAction._cacheIndex = prevIndex;\n\t\tactions[ prevIndex ] = firstInactiveAction;\n\n\t},\n\n\t_takeBackAction: function ( action ) {\n\n\t\t// [  active actions  | inactive actions ]\n\t\t// [ active actions |< inactive actions  ]\n\t\t//        a        s\n\t\t//         <-swap->\n\t\t//        s        a\n\n\t\tconst actions = this._actions,\n\t\t\tprevIndex = action._cacheIndex,\n\n\t\t\tfirstInactiveIndex = -- this._nActiveActions,\n\n\t\t\tlastActiveAction = actions[ firstInactiveIndex ];\n\n\t\taction._cacheIndex = firstInactiveIndex;\n\t\tactions[ firstInactiveIndex ] = action;\n\n\t\tlastActiveAction._cacheIndex = prevIndex;\n\t\tactions[ prevIndex ] = lastActiveAction;\n\n\t},\n\n\t// Memory management for PropertyMixer objects\n\n\t_addInactiveBinding: function ( binding, rootUuid, trackName ) {\n\n\t\tconst bindingsByRoot = this._bindingsByRootAndName,\n\t\t\tbindings = this._bindings;\n\n\t\tlet bindingByName = bindingsByRoot[ rootUuid ];\n\n\t\tif ( bindingByName === undefined ) {\n\n\t\t\tbindingByName = {};\n\t\t\tbindingsByRoot[ rootUuid ] = bindingByName;\n\n\t\t}\n\n\t\tbindingByName[ trackName ] = binding;\n\n\t\tbinding._cacheIndex = bindings.length;\n\t\tbindings.push( binding );\n\n\t},\n\n\t_removeInactiveBinding: function ( binding ) {\n\n\t\tconst bindings = this._bindings,\n\t\t\tpropBinding = binding.binding,\n\t\t\trootUuid = propBinding.rootNode.uuid,\n\t\t\ttrackName = propBinding.path,\n\t\t\tbindingsByRoot = this._bindingsByRootAndName,\n\t\t\tbindingByName = bindingsByRoot[ rootUuid ],\n\n\t\t\tlastInactiveBinding = bindings[ bindings.length - 1 ],\n\t\t\tcacheIndex = binding._cacheIndex;\n\n\t\tlastInactiveBinding._cacheIndex = cacheIndex;\n\t\tbindings[ cacheIndex ] = lastInactiveBinding;\n\t\tbindings.pop();\n\n\t\tdelete bindingByName[ trackName ];\n\n\t\tif ( Object.keys( bindingByName ).length === 0 ) {\n\n\t\t\tdelete bindingsByRoot[ rootUuid ];\n\n\t\t}\n\n\t},\n\n\t_lendBinding: function ( binding ) {\n\n\t\tconst bindings = this._bindings,\n\t\t\tprevIndex = binding._cacheIndex,\n\n\t\t\tlastActiveIndex = this._nActiveBindings ++,\n\n\t\t\tfirstInactiveBinding = bindings[ lastActiveIndex ];\n\n\t\tbinding._cacheIndex = lastActiveIndex;\n\t\tbindings[ lastActiveIndex ] = binding;\n\n\t\tfirstInactiveBinding._cacheIndex = prevIndex;\n\t\tbindings[ prevIndex ] = firstInactiveBinding;\n\n\t},\n\n\t_takeBackBinding: function ( binding ) {\n\n\t\tconst bindings = this._bindings,\n\t\t\tprevIndex = binding._cacheIndex,\n\n\t\t\tfirstInactiveIndex = -- this._nActiveBindings,\n\n\t\t\tlastActiveBinding = bindings[ firstInactiveIndex ];\n\n\t\tbinding._cacheIndex = firstInactiveIndex;\n\t\tbindings[ firstInactiveIndex ] = binding;\n\n\t\tlastActiveBinding._cacheIndex = prevIndex;\n\t\tbindings[ prevIndex ] = lastActiveBinding;\n\n\t},\n\n\n\t// Memory management of Interpolants for weight and time scale\n\n\t_lendControlInterpolant: function () {\n\n\t\tconst interpolants = this._controlInterpolants,\n\t\t\tlastActiveIndex = this._nActiveControlInterpolants ++;\n\n\t\tlet interpolant = interpolants[ lastActiveIndex ];\n\n\t\tif ( interpolant === undefined ) {\n\n\t\t\tinterpolant = new LinearInterpolant(\n\t\t\t\tnew Float32Array( 2 ), new Float32Array( 2 ),\n\t\t\t\t1, this._controlInterpolantsResultBuffer );\n\n\t\t\tinterpolant.__cacheIndex = lastActiveIndex;\n\t\t\tinterpolants[ lastActiveIndex ] = interpolant;\n\n\t\t}\n\n\t\treturn interpolant;\n\n\t},\n\n\t_takeBackControlInterpolant: function ( interpolant ) {\n\n\t\tconst interpolants = this._controlInterpolants,\n\t\t\tprevIndex = interpolant.__cacheIndex,\n\n\t\t\tfirstInactiveIndex = -- this._nActiveControlInterpolants,\n\n\t\t\tlastActiveInterpolant = interpolants[ firstInactiveIndex ];\n\n\t\tinterpolant.__cacheIndex = firstInactiveIndex;\n\t\tinterpolants[ firstInactiveIndex ] = interpolant;\n\n\t\tlastActiveInterpolant.__cacheIndex = prevIndex;\n\t\tinterpolants[ prevIndex ] = lastActiveInterpolant;\n\n\t},\n\n\t_controlInterpolantsResultBuffer: new Float32Array( 1 ),\n\n\t// return an action for a clip optionally using a custom root target\n\t// object (this method allocates a lot of dynamic memory in case a\n\t// previously unknown clip/root combination is specified)\n\tclipAction: function ( clip, optionalRoot, blendMode ) {\n\n\t\tconst root = optionalRoot || this._root,\n\t\t\trootUuid = root.uuid;\n\n\t\tlet clipObject = typeof clip === 'string' ? AnimationClip.findByName( root, clip ) : clip;\n\n\t\tconst clipUuid = clipObject !== null ? clipObject.uuid : clip;\n\n\t\tconst actionsForClip = this._actionsByClip[ clipUuid ];\n\t\tlet prototypeAction = null;\n\n\t\tif ( blendMode === undefined ) {\n\n\t\t\tif ( clipObject !== null ) {\n\n\t\t\t\tblendMode = clipObject.blendMode;\n\n\t\t\t} else {\n\n\t\t\t\tblendMode = NormalAnimationBlendMode;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( actionsForClip !== undefined ) {\n\n\t\t\tconst existingAction = actionsForClip.actionByRoot[ rootUuid ];\n\n\t\t\tif ( existingAction !== undefined && existingAction.blendMode === blendMode ) {\n\n\t\t\t\treturn existingAction;\n\n\t\t\t}\n\n\t\t\t// we know the clip, so we don't have to parse all\n\t\t\t// the bindings again but can just copy\n\t\t\tprototypeAction = actionsForClip.knownActions[ 0 ];\n\n\t\t\t// also, take the clip from the prototype action\n\t\t\tif ( clipObject === null )\n\t\t\t\tclipObject = prototypeAction._clip;\n\n\t\t}\n\n\t\t// clip must be known when specified via string\n\t\tif ( clipObject === null ) return null;\n\n\t\t// allocate all resources required to run it\n\t\tconst newAction = new AnimationAction( this, clipObject, optionalRoot, blendMode );\n\n\t\tthis._bindAction( newAction, prototypeAction );\n\n\t\t// and make the action known to the memory manager\n\t\tthis._addInactiveAction( newAction, clipUuid, rootUuid );\n\n\t\treturn newAction;\n\n\t},\n\n\t// get an existing action\n\texistingAction: function ( clip, optionalRoot ) {\n\n\t\tconst root = optionalRoot || this._root,\n\t\t\trootUuid = root.uuid,\n\n\t\t\tclipObject = typeof clip === 'string' ?\n\t\t\t\tAnimationClip.findByName( root, clip ) : clip,\n\n\t\t\tclipUuid = clipObject ? clipObject.uuid : clip,\n\n\t\t\tactionsForClip = this._actionsByClip[ clipUuid ];\n\n\t\tif ( actionsForClip !== undefined ) {\n\n\t\t\treturn actionsForClip.actionByRoot[ rootUuid ] || null;\n\n\t\t}\n\n\t\treturn null;\n\n\t},\n\n\t// deactivates all previously scheduled actions\n\tstopAllAction: function () {\n\n\t\tconst actions = this._actions,\n\t\t\tnActions = this._nActiveActions;\n\n\t\tfor ( let i = nActions - 1; i >= 0; -- i ) {\n\n\t\t\tactions[ i ].stop();\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\t// advance the time and update apply the animation\n\tupdate: function ( deltaTime ) {\n\n\t\tdeltaTime *= this.timeScale;\n\n\t\tconst actions = this._actions,\n\t\t\tnActions = this._nActiveActions,\n\n\t\t\ttime = this.time += deltaTime,\n\t\t\ttimeDirection = Math.sign( deltaTime ),\n\n\t\t\taccuIndex = this._accuIndex ^= 1;\n\n\t\t// run active actions\n\n\t\tfor ( let i = 0; i !== nActions; ++ i ) {\n\n\t\t\tconst action = actions[ i ];\n\n\t\t\taction._update( time, deltaTime, timeDirection, accuIndex );\n\n\t\t}\n\n\t\t// update scene graph\n\n\t\tconst bindings = this._bindings,\n\t\t\tnBindings = this._nActiveBindings;\n\n\t\tfor ( let i = 0; i !== nBindings; ++ i ) {\n\n\t\t\tbindings[ i ].apply( accuIndex );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\t// Allows you to seek to a specific time in an animation.\n\tsetTime: function ( timeInSeconds ) {\n\n\t\tthis.time = 0; // Zero out time attribute for AnimationMixer object;\n\t\tfor ( let i = 0; i < this._actions.length; i ++ ) {\n\n\t\t\tthis._actions[ i ].time = 0; // Zero out time attribute for all associated AnimationAction objects.\n\n\t\t}\n\n\t\treturn this.update( timeInSeconds ); // Update used to set exact time. Returns \"this\" AnimationMixer object.\n\n\t},\n\n\t// return this mixer's root target object\n\tgetRoot: function () {\n\n\t\treturn this._root;\n\n\t},\n\n\t// free all resources specific to a particular clip\n\tuncacheClip: function ( clip ) {\n\n\t\tconst actions = this._actions,\n\t\t\tclipUuid = clip.uuid,\n\t\t\tactionsByClip = this._actionsByClip,\n\t\t\tactionsForClip = actionsByClip[ clipUuid ];\n\n\t\tif ( actionsForClip !== undefined ) {\n\n\t\t\t// note: just calling _removeInactiveAction would mess up the\n\t\t\t// iteration state and also require updating the state we can\n\t\t\t// just throw away\n\n\t\t\tconst actionsToRemove = actionsForClip.knownActions;\n\n\t\t\tfor ( let i = 0, n = actionsToRemove.length; i !== n; ++ i ) {\n\n\t\t\t\tconst action = actionsToRemove[ i ];\n\n\t\t\t\tthis._deactivateAction( action );\n\n\t\t\t\tconst cacheIndex = action._cacheIndex,\n\t\t\t\t\tlastInactiveAction = actions[ actions.length - 1 ];\n\n\t\t\t\taction._cacheIndex = null;\n\t\t\t\taction._byClipCacheIndex = null;\n\n\t\t\t\tlastInactiveAction._cacheIndex = cacheIndex;\n\t\t\t\tactions[ cacheIndex ] = lastInactiveAction;\n\t\t\t\tactions.pop();\n\n\t\t\t\tthis._removeInactiveBindingsForAction( action );\n\n\t\t\t}\n\n\t\t\tdelete actionsByClip[ clipUuid ];\n\n\t\t}\n\n\t},\n\n\t// free all resources specific to a particular root target object\n\tuncacheRoot: function ( root ) {\n\n\t\tconst rootUuid = root.uuid,\n\t\t\tactionsByClip = this._actionsByClip;\n\n\t\tfor ( const clipUuid in actionsByClip ) {\n\n\t\t\tconst actionByRoot = actionsByClip[ clipUuid ].actionByRoot,\n\t\t\t\taction = actionByRoot[ rootUuid ];\n\n\t\t\tif ( action !== undefined ) {\n\n\t\t\t\tthis._deactivateAction( action );\n\t\t\t\tthis._removeInactiveAction( action );\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst bindingsByRoot = this._bindingsByRootAndName,\n\t\t\tbindingByName = bindingsByRoot[ rootUuid ];\n\n\t\tif ( bindingByName !== undefined ) {\n\n\t\t\tfor ( const trackName in bindingByName ) {\n\n\t\t\t\tconst binding = bindingByName[ trackName ];\n\t\t\t\tbinding.restoreOriginalState();\n\t\t\t\tthis._removeInactiveBinding( binding );\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\t// remove a targeted clip from the cache\n\tuncacheAction: function ( clip, optionalRoot ) {\n\n\t\tconst action = this.existingAction( clip, optionalRoot );\n\n\t\tif ( action !== null ) {\n\n\t\t\tthis._deactivateAction( action );\n\t\t\tthis._removeInactiveAction( action );\n\n\t\t}\n\n\t}\n\n} );\n\nclass Uniform {\n\n\tconstructor( value ) {\n\n\t\tif ( typeof value === 'string' ) {\n\n\t\t\tconsole.warn( 'THREE.Uniform: Type parameter is no longer needed.' );\n\t\t\tvalue = arguments[ 1 ];\n\n\t\t}\n\n\t\tthis.value = value;\n\n\t}\n\n\tclone() {\n\n\t\treturn new Uniform( this.value.clone === undefined ? this.value : this.value.clone() );\n\n\t}\n\n}\n\nfunction InstancedInterleavedBuffer( array, stride, meshPerAttribute ) {\n\n\tInterleavedBuffer.call( this, array, stride );\n\n\tthis.meshPerAttribute = meshPerAttribute || 1;\n\n}\n\nInstancedInterleavedBuffer.prototype = Object.assign( Object.create( InterleavedBuffer.prototype ), {\n\n\tconstructor: InstancedInterleavedBuffer,\n\n\tisInstancedInterleavedBuffer: true,\n\n\tcopy: function ( source ) {\n\n\t\tInterleavedBuffer.prototype.copy.call( this, source );\n\n\t\tthis.meshPerAttribute = source.meshPerAttribute;\n\n\t\treturn this;\n\n\t},\n\n\tclone: function ( data ) {\n\n\t\tconst ib = InterleavedBuffer.prototype.clone.call( this, data );\n\n\t\tib.meshPerAttribute = this.meshPerAttribute;\n\n\t\treturn ib;\n\n\t},\n\n\ttoJSON: function ( data ) {\n\n\t\tconst json = InterleavedBuffer.prototype.toJSON.call( this, data );\n\n\t\tjson.isInstancedInterleavedBuffer = true;\n\t\tjson.meshPerAttribute = this.meshPerAttribute;\n\n\t\treturn json;\n\n\t}\n\n} );\n\nfunction GLBufferAttribute( buffer, type, itemSize, elementSize, count ) {\n\n\tthis.buffer = buffer;\n\tthis.type = type;\n\tthis.itemSize = itemSize;\n\tthis.elementSize = elementSize;\n\tthis.count = count;\n\n\tthis.version = 0;\n\n}\n\nObject.defineProperty( GLBufferAttribute.prototype, 'needsUpdate', {\n\n\tset: function ( value ) {\n\n\t\tif ( value === true ) this.version ++;\n\n\t}\n\n} );\n\nObject.assign( GLBufferAttribute.prototype, {\n\n\tisGLBufferAttribute: true,\n\n\tsetBuffer: function ( buffer ) {\n\n\t\tthis.buffer = buffer;\n\n\t\treturn this;\n\n\t},\n\n\tsetType: function ( type, elementSize ) {\n\n\t\tthis.type = type;\n\t\tthis.elementSize = elementSize;\n\n\t\treturn this;\n\n\t},\n\n\tsetItemSize: function ( itemSize ) {\n\n\t\tthis.itemSize = itemSize;\n\n\t\treturn this;\n\n\t},\n\n\tsetCount: function ( count ) {\n\n\t\tthis.count = count;\n\n\t\treturn this;\n\n\t},\n\n} );\n\nfunction Raycaster( origin, direction, near, far ) {\n\n\tthis.ray = new Ray( origin, direction );\n\t// direction is assumed to be normalized (for accurate distance calculations)\n\n\tthis.near = near || 0;\n\tthis.far = far || Infinity;\n\tthis.camera = null;\n\tthis.layers = new Layers();\n\n\tthis.params = {\n\t\tMesh: {},\n\t\tLine: { threshold: 1 },\n\t\tLOD: {},\n\t\tPoints: { threshold: 1 },\n\t\tSprite: {}\n\t};\n\n\tObject.defineProperties( this.params, {\n\t\tPointCloud: {\n\t\t\tget: function () {\n\n\t\t\t\tconsole.warn( 'THREE.Raycaster: params.PointCloud has been renamed to params.Points.' );\n\t\t\t\treturn this.Points;\n\n\t\t\t}\n\t\t}\n\t} );\n\n}\n\nfunction ascSort( a, b ) {\n\n\treturn a.distance - b.distance;\n\n}\n\nfunction intersectObject( object, raycaster, intersects, recursive ) {\n\n\tif ( object.layers.test( raycaster.layers ) ) {\n\n\t\tobject.raycast( raycaster, intersects );\n\n\t}\n\n\tif ( recursive === true ) {\n\n\t\tconst children = object.children;\n\n\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\tintersectObject( children[ i ], raycaster, intersects, true );\n\n\t\t}\n\n\t}\n\n}\n\nObject.assign( Raycaster.prototype, {\n\n\tset: function ( origin, direction ) {\n\n\t\t// direction is assumed to be normalized (for accurate distance calculations)\n\n\t\tthis.ray.set( origin, direction );\n\n\t},\n\n\tsetFromCamera: function ( coords, camera ) {\n\n\t\tif ( camera && camera.isPerspectiveCamera ) {\n\n\t\t\tthis.ray.origin.setFromMatrixPosition( camera.matrixWorld );\n\t\t\tthis.ray.direction.set( coords.x, coords.y, 0.5 ).unproject( camera ).sub( this.ray.origin ).normalize();\n\t\t\tthis.camera = camera;\n\n\t\t} else if ( camera && camera.isOrthographicCamera ) {\n\n\t\t\tthis.ray.origin.set( coords.x, coords.y, ( camera.near + camera.far ) / ( camera.near - camera.far ) ).unproject( camera ); // set origin in plane of camera\n\t\t\tthis.ray.direction.set( 0, 0, - 1 ).transformDirection( camera.matrixWorld );\n\t\t\tthis.camera = camera;\n\n\t\t} else {\n\n\t\t\tconsole.error( 'THREE.Raycaster: Unsupported camera type: ' + camera.type );\n\n\t\t}\n\n\t},\n\n\tintersectObject: function ( object, recursive, optionalTarget ) {\n\n\t\tconst intersects = optionalTarget || [];\n\n\t\tintersectObject( object, this, intersects, recursive );\n\n\t\tintersects.sort( ascSort );\n\n\t\treturn intersects;\n\n\t},\n\n\tintersectObjects: function ( objects, recursive, optionalTarget ) {\n\n\t\tconst intersects = optionalTarget || [];\n\n\t\tif ( Array.isArray( objects ) === false ) {\n\n\t\t\tconsole.warn( 'THREE.Raycaster.intersectObjects: objects is not an Array.' );\n\t\t\treturn intersects;\n\n\t\t}\n\n\t\tfor ( let i = 0, l = objects.length; i < l; i ++ ) {\n\n\t\t\tintersectObject( objects[ i ], this, intersects, recursive );\n\n\t\t}\n\n\t\tintersects.sort( ascSort );\n\n\t\treturn intersects;\n\n\t}\n\n} );\n\n/**\n * Ref: https://en.wikipedia.org/wiki/Spherical_coordinate_system\n *\n * The polar angle (phi) is measured from the positive y-axis. The positive y-axis is up.\n * The azimuthal angle (theta) is measured from the positive z-axis.\n */\n\nclass Spherical {\n\n\tconstructor( radius = 1, phi = 0, theta = 0 ) {\n\n\t\tthis.radius = radius;\n\t\tthis.phi = phi; // polar angle\n\t\tthis.theta = theta; // azimuthal angle\n\n\t\treturn this;\n\n\t}\n\n\tset( radius, phi, theta ) {\n\n\t\tthis.radius = radius;\n\t\tthis.phi = phi;\n\t\tthis.theta = theta;\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( other ) {\n\n\t\tthis.radius = other.radius;\n\t\tthis.phi = other.phi;\n\t\tthis.theta = other.theta;\n\n\t\treturn this;\n\n\t}\n\n\t// restrict phi to be betwee EPS and PI-EPS\n\tmakeSafe() {\n\n\t\tconst EPS = 0.000001;\n\t\tthis.phi = Math.max( EPS, Math.min( Math.PI - EPS, this.phi ) );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromVector3( v ) {\n\n\t\treturn this.setFromCartesianCoords( v.x, v.y, v.z );\n\n\t}\n\n\tsetFromCartesianCoords( x, y, z ) {\n\n\t\tthis.radius = Math.sqrt( x * x + y * y + z * z );\n\n\t\tif ( this.radius === 0 ) {\n\n\t\t\tthis.theta = 0;\n\t\t\tthis.phi = 0;\n\n\t\t} else {\n\n\t\t\tthis.theta = Math.atan2( x, z );\n\t\t\tthis.phi = Math.acos( MathUtils.clamp( y / this.radius, - 1, 1 ) );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n}\n\n/**\n * Ref: https://en.wikipedia.org/wiki/Cylindrical_coordinate_system\n */\n\nclass Cylindrical {\n\n\tconstructor( radius, theta, y ) {\n\n\t\tthis.radius = ( radius !== undefined ) ? radius : 1.0; // distance from the origin to a point in the x-z plane\n\t\tthis.theta = ( theta !== undefined ) ? theta : 0; // counterclockwise angle in the x-z plane measured in radians from the positive z-axis\n\t\tthis.y = ( y !== undefined ) ? y : 0; // height above the x-z plane\n\n\t\treturn this;\n\n\t}\n\n\tset( radius, theta, y ) {\n\n\t\tthis.radius = radius;\n\t\tthis.theta = theta;\n\t\tthis.y = y;\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( other ) {\n\n\t\tthis.radius = other.radius;\n\t\tthis.theta = other.theta;\n\t\tthis.y = other.y;\n\n\t\treturn this;\n\n\t}\n\n\tsetFromVector3( v ) {\n\n\t\treturn this.setFromCartesianCoords( v.x, v.y, v.z );\n\n\t}\n\n\tsetFromCartesianCoords( x, y, z ) {\n\n\t\tthis.radius = Math.sqrt( x * x + z * z );\n\t\tthis.theta = Math.atan2( x, z );\n\t\tthis.y = y;\n\n\t\treturn this;\n\n\t}\n\n}\n\nconst _vector$8 = /*@__PURE__*/ new Vector2();\n\nclass Box2 {\n\n\tconstructor( min, max ) {\n\n\t\tObject.defineProperty( this, 'isBox2', { value: true } );\n\n\t\tthis.min = ( min !== undefined ) ? min : new Vector2( + Infinity, + Infinity );\n\t\tthis.max = ( max !== undefined ) ? max : new Vector2( - Infinity, - Infinity );\n\n\t}\n\n\tset( min, max ) {\n\n\t\tthis.min.copy( min );\n\t\tthis.max.copy( max );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromPoints( points ) {\n\n\t\tthis.makeEmpty();\n\n\t\tfor ( let i = 0, il = points.length; i < il; i ++ ) {\n\n\t\t\tthis.expandByPoint( points[ i ] );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetFromCenterAndSize( center, size ) {\n\n\t\tconst halfSize = _vector$8.copy( size ).multiplyScalar( 0.5 );\n\t\tthis.min.copy( center ).sub( halfSize );\n\t\tthis.max.copy( center ).add( halfSize );\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( box ) {\n\n\t\tthis.min.copy( box.min );\n\t\tthis.max.copy( box.max );\n\n\t\treturn this;\n\n\t}\n\n\tmakeEmpty() {\n\n\t\tthis.min.x = this.min.y = + Infinity;\n\t\tthis.max.x = this.max.y = - Infinity;\n\n\t\treturn this;\n\n\t}\n\n\tisEmpty() {\n\n\t\t// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes\n\n\t\treturn ( this.max.x < this.min.x ) || ( this.max.y < this.min.y );\n\n\t}\n\n\tgetCenter( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Box2: .getCenter() target is now required' );\n\t\t\ttarget = new Vector2();\n\n\t\t}\n\n\t\treturn this.isEmpty() ? target.set( 0, 0 ) : target.addVectors( this.min, this.max ).multiplyScalar( 0.5 );\n\n\t}\n\n\tgetSize( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Box2: .getSize() target is now required' );\n\t\t\ttarget = new Vector2();\n\n\t\t}\n\n\t\treturn this.isEmpty() ? target.set( 0, 0 ) : target.subVectors( this.max, this.min );\n\n\t}\n\n\texpandByPoint( point ) {\n\n\t\tthis.min.min( point );\n\t\tthis.max.max( point );\n\n\t\treturn this;\n\n\t}\n\n\texpandByVector( vector ) {\n\n\t\tthis.min.sub( vector );\n\t\tthis.max.add( vector );\n\n\t\treturn this;\n\n\t}\n\n\texpandByScalar( scalar ) {\n\n\t\tthis.min.addScalar( - scalar );\n\t\tthis.max.addScalar( scalar );\n\n\t\treturn this;\n\n\t}\n\n\tcontainsPoint( point ) {\n\n\t\treturn point.x < this.min.x || point.x > this.max.x ||\n\t\t\tpoint.y < this.min.y || point.y > this.max.y ? false : true;\n\n\t}\n\n\tcontainsBox( box ) {\n\n\t\treturn this.min.x <= box.min.x && box.max.x <= this.max.x &&\n\t\t\tthis.min.y <= box.min.y && box.max.y <= this.max.y;\n\n\t}\n\n\tgetParameter( point, target ) {\n\n\t\t// This can potentially have a divide by zero if the box\n\t\t// has a size dimension of 0.\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Box2: .getParameter() target is now required' );\n\t\t\ttarget = new Vector2();\n\n\t\t}\n\n\t\treturn target.set(\n\t\t\t( point.x - this.min.x ) / ( this.max.x - this.min.x ),\n\t\t\t( point.y - this.min.y ) / ( this.max.y - this.min.y )\n\t\t);\n\n\t}\n\n\tintersectsBox( box ) {\n\n\t\t// using 4 splitting planes to rule out intersections\n\n\t\treturn box.max.x < this.min.x || box.min.x > this.max.x ||\n\t\t\tbox.max.y < this.min.y || box.min.y > this.max.y ? false : true;\n\n\t}\n\n\tclampPoint( point, target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Box2: .clampPoint() target is now required' );\n\t\t\ttarget = new Vector2();\n\n\t\t}\n\n\t\treturn target.copy( point ).clamp( this.min, this.max );\n\n\t}\n\n\tdistanceToPoint( point ) {\n\n\t\tconst clampedPoint = _vector$8.copy( point ).clamp( this.min, this.max );\n\t\treturn clampedPoint.sub( point ).length();\n\n\t}\n\n\tintersect( box ) {\n\n\t\tthis.min.max( box.min );\n\t\tthis.max.min( box.max );\n\n\t\treturn this;\n\n\t}\n\n\tunion( box ) {\n\n\t\tthis.min.min( box.min );\n\t\tthis.max.max( box.max );\n\n\t\treturn this;\n\n\t}\n\n\ttranslate( offset ) {\n\n\t\tthis.min.add( offset );\n\t\tthis.max.add( offset );\n\n\t\treturn this;\n\n\t}\n\n\tequals( box ) {\n\n\t\treturn box.min.equals( this.min ) && box.max.equals( this.max );\n\n\t}\n\n}\n\nconst _startP = /*@__PURE__*/ new Vector3();\nconst _startEnd = /*@__PURE__*/ new Vector3();\n\nclass Line3 {\n\n\tconstructor( start, end ) {\n\n\t\tthis.start = ( start !== undefined ) ? start : new Vector3();\n\t\tthis.end = ( end !== undefined ) ? end : new Vector3();\n\n\t}\n\n\tset( start, end ) {\n\n\t\tthis.start.copy( start );\n\t\tthis.end.copy( end );\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( line ) {\n\n\t\tthis.start.copy( line.start );\n\t\tthis.end.copy( line.end );\n\n\t\treturn this;\n\n\t}\n\n\tgetCenter( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Line3: .getCenter() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\treturn target.addVectors( this.start, this.end ).multiplyScalar( 0.5 );\n\n\t}\n\n\tdelta( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Line3: .delta() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\treturn target.subVectors( this.end, this.start );\n\n\t}\n\n\tdistanceSq() {\n\n\t\treturn this.start.distanceToSquared( this.end );\n\n\t}\n\n\tdistance() {\n\n\t\treturn this.start.distanceTo( this.end );\n\n\t}\n\n\tat( t, target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Line3: .at() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\treturn this.delta( target ).multiplyScalar( t ).add( this.start );\n\n\t}\n\n\tclosestPointToPointParameter( point, clampToLine ) {\n\n\t\t_startP.subVectors( point, this.start );\n\t\t_startEnd.subVectors( this.end, this.start );\n\n\t\tconst startEnd2 = _startEnd.dot( _startEnd );\n\t\tconst startEnd_startP = _startEnd.dot( _startP );\n\n\t\tlet t = startEnd_startP / startEnd2;\n\n\t\tif ( clampToLine ) {\n\n\t\t\tt = MathUtils.clamp( t, 0, 1 );\n\n\t\t}\n\n\t\treturn t;\n\n\t}\n\n\tclosestPointToPoint( point, clampToLine, target ) {\n\n\t\tconst t = this.closestPointToPointParameter( point, clampToLine );\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Line3: .closestPointToPoint() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\treturn this.delta( target ).multiplyScalar( t ).add( this.start );\n\n\t}\n\n\tapplyMatrix4( matrix ) {\n\n\t\tthis.start.applyMatrix4( matrix );\n\t\tthis.end.applyMatrix4( matrix );\n\n\t\treturn this;\n\n\t}\n\n\tequals( line ) {\n\n\t\treturn line.start.equals( this.start ) && line.end.equals( this.end );\n\n\t}\n\n}\n\nfunction ImmediateRenderObject( material ) {\n\n\tObject3D.call( this );\n\n\tthis.material = material;\n\tthis.render = function ( /* renderCallback */ ) {};\n\n\tthis.hasPositions = false;\n\tthis.hasNormals = false;\n\tthis.hasColors = false;\n\tthis.hasUvs = false;\n\n\tthis.positionArray = null;\n\tthis.normalArray = null;\n\tthis.colorArray = null;\n\tthis.uvArray = null;\n\n\tthis.count = 0;\n\n}\n\nImmediateRenderObject.prototype = Object.create( Object3D.prototype );\nImmediateRenderObject.prototype.constructor = ImmediateRenderObject;\n\nImmediateRenderObject.prototype.isImmediateRenderObject = true;\n\nconst _vector$9 = /*@__PURE__*/ new Vector3();\n\nclass SpotLightHelper extends Object3D {\n\n\tconstructor( light, color ) {\n\n\t\tsuper();\n\t\tthis.light = light;\n\t\tthis.light.updateMatrixWorld();\n\n\t\tthis.matrix = light.matrixWorld;\n\t\tthis.matrixAutoUpdate = false;\n\n\t\tthis.color = color;\n\n\t\tconst geometry = new BufferGeometry();\n\n\t\tconst positions = [\n\t\t\t0, 0, 0, \t0, 0, 1,\n\t\t\t0, 0, 0, \t1, 0, 1,\n\t\t\t0, 0, 0,\t- 1, 0, 1,\n\t\t\t0, 0, 0, \t0, 1, 1,\n\t\t\t0, 0, 0, \t0, - 1, 1\n\t\t];\n\n\t\tfor ( let i = 0, j = 1, l = 32; i < l; i ++, j ++ ) {\n\n\t\t\tconst p1 = ( i / l ) * Math.PI * 2;\n\t\t\tconst p2 = ( j / l ) * Math.PI * 2;\n\n\t\t\tpositions.push(\n\t\t\t\tMath.cos( p1 ), Math.sin( p1 ), 1,\n\t\t\t\tMath.cos( p2 ), Math.sin( p2 ), 1\n\t\t\t);\n\n\t\t}\n\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );\n\n\t\tconst material = new LineBasicMaterial( { fog: false, toneMapped: false } );\n\n\t\tthis.cone = new LineSegments( geometry, material );\n\t\tthis.add( this.cone );\n\n\t\tthis.update();\n\n\t}\n\n\tdispose() {\n\n\t\tthis.cone.geometry.dispose();\n\t\tthis.cone.material.dispose();\n\n\t}\n\n\tupdate() {\n\n\t\tthis.light.updateMatrixWorld();\n\n\t\tconst coneLength = this.light.distance ? this.light.distance : 1000;\n\t\tconst coneWidth = coneLength * Math.tan( this.light.angle );\n\n\t\tthis.cone.scale.set( coneWidth, coneWidth, coneLength );\n\n\t\t_vector$9.setFromMatrixPosition( this.light.target.matrixWorld );\n\n\t\tthis.cone.lookAt( _vector$9 );\n\n\t\tif ( this.color !== undefined ) {\n\n\t\t\tthis.cone.material.color.set( this.color );\n\n\t\t} else {\n\n\t\t\tthis.cone.material.color.copy( this.light.color );\n\n\t\t}\n\n\t}\n\n}\n\nconst _vector$a = /*@__PURE__*/ new Vector3();\nconst _boneMatrix = /*@__PURE__*/ new Matrix4();\nconst _matrixWorldInv = /*@__PURE__*/ new Matrix4();\n\n\nclass SkeletonHelper extends LineSegments {\n\n\tconstructor( object ) {\n\n\t\tconst bones = getBoneList( object );\n\n\t\tconst geometry = new BufferGeometry();\n\n\t\tconst vertices = [];\n\t\tconst colors = [];\n\n\t\tconst color1 = new Color( 0, 0, 1 );\n\t\tconst color2 = new Color( 0, 1, 0 );\n\n\t\tfor ( let i = 0; i < bones.length; i ++ ) {\n\n\t\t\tconst bone = bones[ i ];\n\n\t\t\tif ( bone.parent && bone.parent.isBone ) {\n\n\t\t\t\tvertices.push( 0, 0, 0 );\n\t\t\t\tvertices.push( 0, 0, 0 );\n\t\t\t\tcolors.push( color1.r, color1.g, color1.b );\n\t\t\t\tcolors.push( color2.r, color2.g, color2.b );\n\n\t\t\t}\n\n\t\t}\n\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tgeometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );\n\n\t\tconst material = new LineBasicMaterial( { vertexColors: true, depthTest: false, depthWrite: false, toneMapped: false, transparent: true } );\n\n\t\tsuper( geometry, material );\n\n\t\tthis.type = 'SkeletonHelper';\n\t\tthis.isSkeletonHelper = true;\n\n\t\tthis.root = object;\n\t\tthis.bones = bones;\n\n\t\tthis.matrix = object.matrixWorld;\n\t\tthis.matrixAutoUpdate = false;\n\n\t}\n\n\tupdateMatrixWorld( force ) {\n\n\t\tconst bones = this.bones;\n\n\t\tconst geometry = this.geometry;\n\t\tconst position = geometry.getAttribute( 'position' );\n\n\t\t_matrixWorldInv.copy( this.root.matrixWorld ).invert();\n\n\t\tfor ( let i = 0, j = 0; i < bones.length; i ++ ) {\n\n\t\t\tconst bone = bones[ i ];\n\n\t\t\tif ( bone.parent && bone.parent.isBone ) {\n\n\t\t\t\t_boneMatrix.multiplyMatrices( _matrixWorldInv, bone.matrixWorld );\n\t\t\t\t_vector$a.setFromMatrixPosition( _boneMatrix );\n\t\t\t\tposition.setXYZ( j, _vector$a.x, _vector$a.y, _vector$a.z );\n\n\t\t\t\t_boneMatrix.multiplyMatrices( _matrixWorldInv, bone.parent.matrixWorld );\n\t\t\t\t_vector$a.setFromMatrixPosition( _boneMatrix );\n\t\t\t\tposition.setXYZ( j + 1, _vector$a.x, _vector$a.y, _vector$a.z );\n\n\t\t\t\tj += 2;\n\n\t\t\t}\n\n\t\t}\n\n\t\tgeometry.getAttribute( 'position' ).needsUpdate = true;\n\n\t\tsuper.updateMatrixWorld( force );\n\n\t}\n\n}\n\n\nfunction getBoneList( object ) {\n\n\tconst boneList = [];\n\n\tif ( object && object.isBone ) {\n\n\t\tboneList.push( object );\n\n\t}\n\n\tfor ( let i = 0; i < object.children.length; i ++ ) {\n\n\t\tboneList.push.apply( boneList, getBoneList( object.children[ i ] ) );\n\n\t}\n\n\treturn boneList;\n\n}\n\nclass PointLightHelper extends Mesh {\n\n\tconstructor( light, sphereSize, color ) {\n\n\t\tconst geometry = new SphereBufferGeometry( sphereSize, 4, 2 );\n\t\tconst material = new MeshBasicMaterial( { wireframe: true, fog: false, toneMapped: false } );\n\n\t\tsuper( geometry, material );\n\n\t\tthis.light = light;\n\t\tthis.light.updateMatrixWorld();\n\n\t\tthis.color = color;\n\n\t\tthis.type = 'PointLightHelper';\n\n\t\tthis.matrix = this.light.matrixWorld;\n\t\tthis.matrixAutoUpdate = false;\n\n\t\tthis.update();\n\n\n\t\t/*\n\t// TODO: delete this comment?\n\tconst distanceGeometry = new THREE.IcosahedronBufferGeometry( 1, 2 );\n\tconst distanceMaterial = new THREE.MeshBasicMaterial( { color: hexColor, fog: false, wireframe: true, opacity: 0.1, transparent: true } );\n\n\tthis.lightSphere = new THREE.Mesh( bulbGeometry, bulbMaterial );\n\tthis.lightDistance = new THREE.Mesh( distanceGeometry, distanceMaterial );\n\n\tconst d = light.distance;\n\n\tif ( d === 0.0 ) {\n\n\t\tthis.lightDistance.visible = false;\n\n\t} else {\n\n\t\tthis.lightDistance.scale.set( d, d, d );\n\n\t}\n\n\tthis.add( this.lightDistance );\n\t*/\n\n\t}\n\n\tdispose() {\n\n\t\tthis.geometry.dispose();\n\t\tthis.material.dispose();\n\n\t}\n\n\tupdate() {\n\n\t\tif ( this.color !== undefined ) {\n\n\t\t\tthis.material.color.set( this.color );\n\n\t\t} else {\n\n\t\t\tthis.material.color.copy( this.light.color );\n\n\t\t}\n\n\t\t/*\n\t\tconst d = this.light.distance;\n\n\t\tif ( d === 0.0 ) {\n\n\t\t\tthis.lightDistance.visible = false;\n\n\t\t} else {\n\n\t\t\tthis.lightDistance.visible = true;\n\t\t\tthis.lightDistance.scale.set( d, d, d );\n\n\t\t}\n\t\t*/\n\n\t}\n\n}\n\nconst _vector$b = /*@__PURE__*/ new Vector3();\nconst _color1 = /*@__PURE__*/ new Color();\nconst _color2 = /*@__PURE__*/ new Color();\n\nclass HemisphereLightHelper extends Object3D {\n\n\tconstructor( light, size, color ) {\n\n\t\tsuper();\n\t\tthis.light = light;\n\t\tthis.light.updateMatrixWorld();\n\n\t\tthis.matrix = light.matrixWorld;\n\t\tthis.matrixAutoUpdate = false;\n\n\t\tthis.color = color;\n\n\t\tconst geometry = new OctahedronBufferGeometry( size );\n\t\tgeometry.rotateY( Math.PI * 0.5 );\n\n\t\tthis.material = new MeshBasicMaterial( { wireframe: true, fog: false, toneMapped: false } );\n\t\tif ( this.color === undefined ) this.material.vertexColors = true;\n\n\t\tconst position = geometry.getAttribute( 'position' );\n\t\tconst colors = new Float32Array( position.count * 3 );\n\n\t\tgeometry.setAttribute( 'color', new BufferAttribute( colors, 3 ) );\n\n\t\tthis.add( new Mesh( geometry, this.material ) );\n\n\t\tthis.update();\n\n\t}\n\n\tdispose() {\n\n\t\tthis.children[ 0 ].geometry.dispose();\n\t\tthis.children[ 0 ].material.dispose();\n\n\t}\n\n\tupdate() {\n\n\t\tconst mesh = this.children[ 0 ];\n\n\t\tif ( this.color !== undefined ) {\n\n\t\t\tthis.material.color.set( this.color );\n\n\t\t} else {\n\n\t\t\tconst colors = mesh.geometry.getAttribute( 'color' );\n\n\t\t\t_color1.copy( this.light.color );\n\t\t\t_color2.copy( this.light.groundColor );\n\n\t\t\tfor ( let i = 0, l = colors.count; i < l; i ++ ) {\n\n\t\t\t\tconst color = ( i < ( l / 2 ) ) ? _color1 : _color2;\n\n\t\t\t\tcolors.setXYZ( i, color.r, color.g, color.b );\n\n\t\t\t}\n\n\t\t\tcolors.needsUpdate = true;\n\n\t\t}\n\n\t\tmesh.lookAt( _vector$b.setFromMatrixPosition( this.light.matrixWorld ).negate() );\n\n\t}\n\n}\n\nclass GridHelper extends LineSegments {\n\n\tconstructor( size = 10, divisions = 10, color1 = 0x444444, color2 = 0x888888 ) {\n\n\t\tcolor1 = new Color( color1 );\n\t\tcolor2 = new Color( color2 );\n\n\t\tconst center = divisions / 2;\n\t\tconst step = size / divisions;\n\t\tconst halfSize = size / 2;\n\n\t\tconst vertices = [], colors = [];\n\n\t\tfor ( let i = 0, j = 0, k = - halfSize; i <= divisions; i ++, k += step ) {\n\n\t\t\tvertices.push( - halfSize, 0, k, halfSize, 0, k );\n\t\t\tvertices.push( k, 0, - halfSize, k, 0, halfSize );\n\n\t\t\tconst color = i === center ? color1 : color2;\n\n\t\t\tcolor.toArray( colors, j ); j += 3;\n\t\t\tcolor.toArray( colors, j ); j += 3;\n\t\t\tcolor.toArray( colors, j ); j += 3;\n\t\t\tcolor.toArray( colors, j ); j += 3;\n\n\t\t}\n\n\t\tconst geometry = new BufferGeometry();\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tgeometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );\n\n\t\tconst material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );\n\n\t\tsuper( geometry, material );\n\n\t\tthis.type = 'GridHelper';\n\n\t}\n\n}\n\nclass PolarGridHelper extends LineSegments {\n\n\tconstructor( radius = 10, radials = 16, circles = 8, divisions = 64, color1 = 0x444444, color2 = 0x888888 ) {\n\n\t\tcolor1 = new Color( color1 );\n\t\tcolor2 = new Color( color2 );\n\n\t\tconst vertices = [];\n\t\tconst colors = [];\n\n\t\t// create the radials\n\n\t\tfor ( let i = 0; i <= radials; i ++ ) {\n\n\t\t\tconst v = ( i / radials ) * ( Math.PI * 2 );\n\n\t\t\tconst x = Math.sin( v ) * radius;\n\t\t\tconst z = Math.cos( v ) * radius;\n\n\t\t\tvertices.push( 0, 0, 0 );\n\t\t\tvertices.push( x, 0, z );\n\n\t\t\tconst color = ( i & 1 ) ? color1 : color2;\n\n\t\t\tcolors.push( color.r, color.g, color.b );\n\t\t\tcolors.push( color.r, color.g, color.b );\n\n\t\t}\n\n\t\t// create the circles\n\n\t\tfor ( let i = 0; i <= circles; i ++ ) {\n\n\t\t\tconst color = ( i & 1 ) ? color1 : color2;\n\n\t\t\tconst r = radius - ( radius / circles * i );\n\n\t\t\tfor ( let j = 0; j < divisions; j ++ ) {\n\n\t\t\t\t// first vertex\n\n\t\t\t\tlet v = ( j / divisions ) * ( Math.PI * 2 );\n\n\t\t\t\tlet x = Math.sin( v ) * r;\n\t\t\t\tlet z = Math.cos( v ) * r;\n\n\t\t\t\tvertices.push( x, 0, z );\n\t\t\t\tcolors.push( color.r, color.g, color.b );\n\n\t\t\t\t// second vertex\n\n\t\t\t\tv = ( ( j + 1 ) / divisions ) * ( Math.PI * 2 );\n\n\t\t\t\tx = Math.sin( v ) * r;\n\t\t\t\tz = Math.cos( v ) * r;\n\n\t\t\t\tvertices.push( x, 0, z );\n\t\t\t\tcolors.push( color.r, color.g, color.b );\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst geometry = new BufferGeometry();\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tgeometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );\n\n\t\tconst material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );\n\n\t\tsuper( geometry, material );\n\n\t\tthis.type = 'PolarGridHelper';\n\n\t}\n\n}\n\nconst _v1$6 = /*@__PURE__*/ new Vector3();\nconst _v2$3 = /*@__PURE__*/ new Vector3();\nconst _v3$1 = /*@__PURE__*/ new Vector3();\n\nclass DirectionalLightHelper extends Object3D {\n\n\tconstructor( light, size, color ) {\n\n\t\tsuper();\n\t\tthis.light = light;\n\t\tthis.light.updateMatrixWorld();\n\n\t\tthis.matrix = light.matrixWorld;\n\t\tthis.matrixAutoUpdate = false;\n\n\t\tthis.color = color;\n\n\t\tif ( size === undefined ) size = 1;\n\n\t\tlet geometry = new BufferGeometry();\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( [\n\t\t\t- size, size, 0,\n\t\t\tsize, size, 0,\n\t\t\tsize, - size, 0,\n\t\t\t- size, - size, 0,\n\t\t\t- size, size, 0\n\t\t], 3 ) );\n\n\t\tconst material = new LineBasicMaterial( { fog: false, toneMapped: false } );\n\n\t\tthis.lightPlane = new Line( geometry, material );\n\t\tthis.add( this.lightPlane );\n\n\t\tgeometry = new BufferGeometry();\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0, 0, 0, 1 ], 3 ) );\n\n\t\tthis.targetLine = new Line( geometry, material );\n\t\tthis.add( this.targetLine );\n\n\t\tthis.update();\n\n\t}\n\n\tdispose() {\n\n\t\tthis.lightPlane.geometry.dispose();\n\t\tthis.lightPlane.material.dispose();\n\t\tthis.targetLine.geometry.dispose();\n\t\tthis.targetLine.material.dispose();\n\n\t}\n\n\tupdate() {\n\n\t\t_v1$6.setFromMatrixPosition( this.light.matrixWorld );\n\t\t_v2$3.setFromMatrixPosition( this.light.target.matrixWorld );\n\t\t_v3$1.subVectors( _v2$3, _v1$6 );\n\n\t\tthis.lightPlane.lookAt( _v2$3 );\n\n\t\tif ( this.color !== undefined ) {\n\n\t\t\tthis.lightPlane.material.color.set( this.color );\n\t\t\tthis.targetLine.material.color.set( this.color );\n\n\t\t} else {\n\n\t\t\tthis.lightPlane.material.color.copy( this.light.color );\n\t\t\tthis.targetLine.material.color.copy( this.light.color );\n\n\t\t}\n\n\t\tthis.targetLine.lookAt( _v2$3 );\n\t\tthis.targetLine.scale.z = _v3$1.length();\n\n\t}\n\n}\n\nconst _vector$c = /*@__PURE__*/ new Vector3();\nconst _camera = /*@__PURE__*/ new Camera();\n\n/**\n *\t- shows frustum, line of sight and up of the camera\n *\t- suitable for fast updates\n * \t- based on frustum visualization in lightgl.js shadowmap example\n *\t\thttp://evanw.github.com/lightgl.js/tests/shadowmap.html\n */\n\nclass CameraHelper extends LineSegments {\n\n\tconstructor( camera ) {\n\n\t\tconst geometry = new BufferGeometry();\n\t\tconst material = new LineBasicMaterial( { color: 0xffffff, vertexColors: true, toneMapped: false } );\n\n\t\tconst vertices = [];\n\t\tconst colors = [];\n\n\t\tconst pointMap = {};\n\n\t\t// colors\n\n\t\tconst colorFrustum = new Color( 0xffaa00 );\n\t\tconst colorCone = new Color( 0xff0000 );\n\t\tconst colorUp = new Color( 0x00aaff );\n\t\tconst colorTarget = new Color( 0xffffff );\n\t\tconst colorCross = new Color( 0x333333 );\n\n\t\t// near\n\n\t\taddLine( 'n1', 'n2', colorFrustum );\n\t\taddLine( 'n2', 'n4', colorFrustum );\n\t\taddLine( 'n4', 'n3', colorFrustum );\n\t\taddLine( 'n3', 'n1', colorFrustum );\n\n\t\t// far\n\n\t\taddLine( 'f1', 'f2', colorFrustum );\n\t\taddLine( 'f2', 'f4', colorFrustum );\n\t\taddLine( 'f4', 'f3', colorFrustum );\n\t\taddLine( 'f3', 'f1', colorFrustum );\n\n\t\t// sides\n\n\t\taddLine( 'n1', 'f1', colorFrustum );\n\t\taddLine( 'n2', 'f2', colorFrustum );\n\t\taddLine( 'n3', 'f3', colorFrustum );\n\t\taddLine( 'n4', 'f4', colorFrustum );\n\n\t\t// cone\n\n\t\taddLine( 'p', 'n1', colorCone );\n\t\taddLine( 'p', 'n2', colorCone );\n\t\taddLine( 'p', 'n3', colorCone );\n\t\taddLine( 'p', 'n4', colorCone );\n\n\t\t// up\n\n\t\taddLine( 'u1', 'u2', colorUp );\n\t\taddLine( 'u2', 'u3', colorUp );\n\t\taddLine( 'u3', 'u1', colorUp );\n\n\t\t// target\n\n\t\taddLine( 'c', 't', colorTarget );\n\t\taddLine( 'p', 'c', colorCross );\n\n\t\t// cross\n\n\t\taddLine( 'cn1', 'cn2', colorCross );\n\t\taddLine( 'cn3', 'cn4', colorCross );\n\n\t\taddLine( 'cf1', 'cf2', colorCross );\n\t\taddLine( 'cf3', 'cf4', colorCross );\n\n\t\tfunction addLine( a, b, color ) {\n\n\t\t\taddPoint( a, color );\n\t\t\taddPoint( b, color );\n\n\t\t}\n\n\t\tfunction addPoint( id, color ) {\n\n\t\t\tvertices.push( 0, 0, 0 );\n\t\t\tcolors.push( color.r, color.g, color.b );\n\n\t\t\tif ( pointMap[ id ] === undefined ) {\n\n\t\t\t\tpointMap[ id ] = [];\n\n\t\t\t}\n\n\t\t\tpointMap[ id ].push( ( vertices.length / 3 ) - 1 );\n\n\t\t}\n\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tgeometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );\n\n\t\tsuper( geometry, material );\n\n\t\tthis.type = 'CameraHelper';\n\n\t\tthis.camera = camera;\n\t\tif ( this.camera.updateProjectionMatrix ) this.camera.updateProjectionMatrix();\n\n\t\tthis.matrix = camera.matrixWorld;\n\t\tthis.matrixAutoUpdate = false;\n\n\t\tthis.pointMap = pointMap;\n\n\t\tthis.update();\n\n\t}\n\n\tupdate() {\n\n\t\tconst geometry = this.geometry;\n\t\tconst pointMap = this.pointMap;\n\n\t\tconst w = 1, h = 1;\n\n\t\t// we need just camera projection matrix inverse\n\t\t// world matrix must be identity\n\n\t\t_camera.projectionMatrixInverse.copy( this.camera.projectionMatrixInverse );\n\n\t\t// center / target\n\n\t\tsetPoint( 'c', pointMap, geometry, _camera, 0, 0, - 1 );\n\t\tsetPoint( 't', pointMap, geometry, _camera, 0, 0, 1 );\n\n\t\t// near\n\n\t\tsetPoint( 'n1', pointMap, geometry, _camera, - w, - h, - 1 );\n\t\tsetPoint( 'n2', pointMap, geometry, _camera, w, - h, - 1 );\n\t\tsetPoint( 'n3', pointMap, geometry, _camera, - w, h, - 1 );\n\t\tsetPoint( 'n4', pointMap, geometry, _camera, w, h, - 1 );\n\n\t\t// far\n\n\t\tsetPoint( 'f1', pointMap, geometry, _camera, - w, - h, 1 );\n\t\tsetPoint( 'f2', pointMap, geometry, _camera, w, - h, 1 );\n\t\tsetPoint( 'f3', pointMap, geometry, _camera, - w, h, 1 );\n\t\tsetPoint( 'f4', pointMap, geometry, _camera, w, h, 1 );\n\n\t\t// up\n\n\t\tsetPoint( 'u1', pointMap, geometry, _camera, w * 0.7, h * 1.1, - 1 );\n\t\tsetPoint( 'u2', pointMap, geometry, _camera, - w * 0.7, h * 1.1, - 1 );\n\t\tsetPoint( 'u3', pointMap, geometry, _camera, 0, h * 2, - 1 );\n\n\t\t// cross\n\n\t\tsetPoint( 'cf1', pointMap, geometry, _camera, - w, 0, 1 );\n\t\tsetPoint( 'cf2', pointMap, geometry, _camera, w, 0, 1 );\n\t\tsetPoint( 'cf3', pointMap, geometry, _camera, 0, - h, 1 );\n\t\tsetPoint( 'cf4', pointMap, geometry, _camera, 0, h, 1 );\n\n\t\tsetPoint( 'cn1', pointMap, geometry, _camera, - w, 0, - 1 );\n\t\tsetPoint( 'cn2', pointMap, geometry, _camera, w, 0, - 1 );\n\t\tsetPoint( 'cn3', pointMap, geometry, _camera, 0, - h, - 1 );\n\t\tsetPoint( 'cn4', pointMap, geometry, _camera, 0, h, - 1 );\n\n\t\tgeometry.getAttribute( 'position' ).needsUpdate = true;\n\n\t}\n\n}\n\n\nfunction setPoint( point, pointMap, geometry, camera, x, y, z ) {\n\n\t_vector$c.set( x, y, z ).unproject( camera );\n\n\tconst points = pointMap[ point ];\n\n\tif ( points !== undefined ) {\n\n\t\tconst position = geometry.getAttribute( 'position' );\n\n\t\tfor ( let i = 0, l = points.length; i < l; i ++ ) {\n\n\t\t\tposition.setXYZ( points[ i ], _vector$c.x, _vector$c.y, _vector$c.z );\n\n\t\t}\n\n\t}\n\n}\n\nconst _box$3 = /*@__PURE__*/ new Box3();\n\nclass BoxHelper extends LineSegments {\n\n\tconstructor( object, color = 0xffff00 ) {\n\n\t\tconst indices = new Uint16Array( [ 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 ] );\n\t\tconst positions = new Float32Array( 8 * 3 );\n\n\t\tconst geometry = new BufferGeometry();\n\t\tgeometry.setIndex( new BufferAttribute( indices, 1 ) );\n\t\tgeometry.setAttribute( 'position', new BufferAttribute( positions, 3 ) );\n\n\t\tsuper( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );\n\n\t\tthis.object = object;\n\t\tthis.type = 'BoxHelper';\n\n\t\tthis.matrixAutoUpdate = false;\n\n\t\tthis.update();\n\n\t}\n\n\tupdate( object ) {\n\n\t\tif ( object !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.BoxHelper: .update() has no longer arguments.' );\n\n\t\t}\n\n\t\tif ( this.object !== undefined ) {\n\n\t\t\t_box$3.setFromObject( this.object );\n\n\t\t}\n\n\t\tif ( _box$3.isEmpty() ) return;\n\n\t\tconst min = _box$3.min;\n\t\tconst max = _box$3.max;\n\n\t\t/*\n\t\t\t5____4\n\t\t1/___0/|\n\t\t| 6__|_7\n\t\t2/___3/\n\n\t\t0: max.x, max.y, max.z\n\t\t1: min.x, max.y, max.z\n\t\t2: min.x, min.y, max.z\n\t\t3: max.x, min.y, max.z\n\t\t4: max.x, max.y, min.z\n\t\t5: min.x, max.y, min.z\n\t\t6: min.x, min.y, min.z\n\t\t7: max.x, min.y, min.z\n\t\t*/\n\n\t\tconst position = this.geometry.attributes.position;\n\t\tconst array = position.array;\n\n\t\tarray[ 0 ] = max.x; array[ 1 ] = max.y; array[ 2 ] = max.z;\n\t\tarray[ 3 ] = min.x; array[ 4 ] = max.y; array[ 5 ] = max.z;\n\t\tarray[ 6 ] = min.x; array[ 7 ] = min.y; array[ 8 ] = max.z;\n\t\tarray[ 9 ] = max.x; array[ 10 ] = min.y; array[ 11 ] = max.z;\n\t\tarray[ 12 ] = max.x; array[ 13 ] = max.y; array[ 14 ] = min.z;\n\t\tarray[ 15 ] = min.x; array[ 16 ] = max.y; array[ 17 ] = min.z;\n\t\tarray[ 18 ] = min.x; array[ 19 ] = min.y; array[ 20 ] = min.z;\n\t\tarray[ 21 ] = max.x; array[ 22 ] = min.y; array[ 23 ] = min.z;\n\n\t\tposition.needsUpdate = true;\n\n\t\tthis.geometry.computeBoundingSphere();\n\n\n\t}\n\n\tsetFromObject( object ) {\n\n\t\tthis.object = object;\n\t\tthis.update();\n\n\t\treturn this;\n\n\t}\n\n\tcopy( source ) {\n\n\t\tLineSegments.prototype.copy.call( this, source );\n\n\t\tthis.object = source.object;\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass Box3Helper extends LineSegments {\n\n\tconstructor( box, color = 0xffff00 ) {\n\n\t\tconst indices = new Uint16Array( [ 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 ] );\n\n\t\tconst positions = [ 1, 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, - 1, 1, 1, 1, - 1, - 1, 1, - 1, - 1, - 1, - 1, 1, - 1, - 1 ];\n\n\t\tconst geometry = new BufferGeometry();\n\n\t\tgeometry.setIndex( new BufferAttribute( indices, 1 ) );\n\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );\n\n\t\tsuper( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );\n\n\t\tthis.box = box;\n\n\t\tthis.type = 'Box3Helper';\n\n\t\tthis.geometry.computeBoundingSphere();\n\n\t}\n\n\tupdateMatrixWorld( force ) {\n\n\t\tconst box = this.box;\n\n\t\tif ( box.isEmpty() ) return;\n\n\t\tbox.getCenter( this.position );\n\n\t\tbox.getSize( this.scale );\n\n\t\tthis.scale.multiplyScalar( 0.5 );\n\n\t\tsuper.updateMatrixWorld( force );\n\n\t}\n\n}\n\nclass PlaneHelper extends Line {\n\n\tconstructor( plane, size = 1, hex = 0xffff00 ) {\n\n\t\tconst color = hex;\n\n\t\tconst positions = [ 1, - 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, - 1, 1, 1, 1, 1, 0, 0, 1, 0, 0, 0 ];\n\n\t\tconst geometry = new BufferGeometry();\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );\n\t\tgeometry.computeBoundingSphere();\n\n\t\tsuper( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );\n\n\t\tthis.type = 'PlaneHelper';\n\n\t\tthis.plane = plane;\n\n\t\tthis.size = size;\n\n\t\tconst positions2 = [ 1, 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, 1, 1, - 1, - 1, 1, 1, - 1, 1 ];\n\n\t\tconst geometry2 = new BufferGeometry();\n\t\tgeometry2.setAttribute( 'position', new Float32BufferAttribute( positions2, 3 ) );\n\t\tgeometry2.computeBoundingSphere();\n\n\t\tthis.add( new Mesh( geometry2, new MeshBasicMaterial( { color: color, opacity: 0.2, transparent: true, depthWrite: false, toneMapped: false } ) ) );\n\n\t}\n\n\tupdateMatrixWorld( force ) {\n\n\t\tlet scale = - this.plane.constant;\n\n\t\tif ( Math.abs( scale ) < 1e-8 ) scale = 1e-8; // sign does not matter\n\n\t\tthis.scale.set( 0.5 * this.size, 0.5 * this.size, scale );\n\n\t\tthis.children[ 0 ].material.side = ( scale < 0 ) ? BackSide : FrontSide; // renderer flips side when determinant < 0; flipping not wanted here\n\n\t\tthis.lookAt( this.plane.normal );\n\n\t\tsuper.updateMatrixWorld( force );\n\n\t}\n\n}\n\nconst _axis = /*@__PURE__*/ new Vector3();\nlet _lineGeometry, _coneGeometry;\n\nclass ArrowHelper extends Object3D {\n\n\tconstructor( dir, origin, length, color, headLength, headWidth ) {\n\n\t\tsuper();\n\t\t// dir is assumed to be normalized\n\n\t\tthis.type = 'ArrowHelper';\n\n\t\tif ( dir === undefined ) dir = new Vector3( 0, 0, 1 );\n\t\tif ( origin === undefined ) origin = new Vector3( 0, 0, 0 );\n\t\tif ( length === undefined ) length = 1;\n\t\tif ( color === undefined ) color = 0xffff00;\n\t\tif ( headLength === undefined ) headLength = 0.2 * length;\n\t\tif ( headWidth === undefined ) headWidth = 0.2 * headLength;\n\n\t\tif ( _lineGeometry === undefined ) {\n\n\t\t\t_lineGeometry = new BufferGeometry();\n\t\t\t_lineGeometry.setAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0, 0, 1, 0 ], 3 ) );\n\n\t\t\t_coneGeometry = new CylinderBufferGeometry( 0, 0.5, 1, 5, 1 );\n\t\t\t_coneGeometry.translate( 0, - 0.5, 0 );\n\n\t\t}\n\n\t\tthis.position.copy( origin );\n\n\t\tthis.line = new Line( _lineGeometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );\n\t\tthis.line.matrixAutoUpdate = false;\n\t\tthis.add( this.line );\n\n\t\tthis.cone = new Mesh( _coneGeometry, new MeshBasicMaterial( { color: color, toneMapped: false } ) );\n\t\tthis.cone.matrixAutoUpdate = false;\n\t\tthis.add( this.cone );\n\n\t\tthis.setDirection( dir );\n\t\tthis.setLength( length, headLength, headWidth );\n\n\t}\n\n\tsetDirection( dir ) {\n\n\t\t// dir is assumed to be normalized\n\n\t\tif ( dir.y > 0.99999 ) {\n\n\t\t\tthis.quaternion.set( 0, 0, 0, 1 );\n\n\t\t} else if ( dir.y < - 0.99999 ) {\n\n\t\t\tthis.quaternion.set( 1, 0, 0, 0 );\n\n\t\t} else {\n\n\t\t\t_axis.set( dir.z, 0, - dir.x ).normalize();\n\n\t\t\tconst radians = Math.acos( dir.y );\n\n\t\t\tthis.quaternion.setFromAxisAngle( _axis, radians );\n\n\t\t}\n\n\t}\n\n\tsetLength( length, headLength, headWidth ) {\n\n\t\tif ( headLength === undefined ) headLength = 0.2 * length;\n\t\tif ( headWidth === undefined ) headWidth = 0.2 * headLength;\n\n\t\tthis.line.scale.set( 1, Math.max( 0.0001, length - headLength ), 1 ); // see #17458\n\t\tthis.line.updateMatrix();\n\n\t\tthis.cone.scale.set( headWidth, headLength, headWidth );\n\t\tthis.cone.position.y = length;\n\t\tthis.cone.updateMatrix();\n\n\t}\n\n\tsetColor( color ) {\n\n\t\tthis.line.material.color.set( color );\n\t\tthis.cone.material.color.set( color );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source, false );\n\n\t\tthis.line.copy( source.line );\n\t\tthis.cone.copy( source.cone );\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass AxesHelper extends LineSegments {\n\n\tconstructor( size = 1 ) {\n\n\t\tconst vertices = [\n\t\t\t0, 0, 0,\tsize, 0, 0,\n\t\t\t0, 0, 0,\t0, size, 0,\n\t\t\t0, 0, 0,\t0, 0, size\n\t\t];\n\n\t\tconst colors = [\n\t\t\t1, 0, 0,\t1, 0.6, 0,\n\t\t\t0, 1, 0,\t0.6, 1, 0,\n\t\t\t0, 0, 1,\t0, 0.6, 1\n\t\t];\n\n\t\tconst geometry = new BufferGeometry();\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tgeometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );\n\n\t\tconst material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );\n\n\t\tsuper( geometry, material );\n\n\t\tthis.type = 'AxesHelper';\n\n\t}\n\n}\n\nconst _floatView = new Float32Array( 1 );\nconst _int32View = new Int32Array( _floatView.buffer );\n\nconst DataUtils = {\n\n\t// Converts float32 to float16 (stored as uint16 value).\n\n\ttoHalfFloat: function ( val ) {\n\n\t\t// Source: http://gamedev.stackexchange.com/questions/17326/conversion-of-a-number-from-single-precision-floating-point-representation-to-a/17410#17410\n\n\t\t/* This method is faster than the OpenEXR implementation (very often\n\t\t* used, eg. in Ogre), with the additional benefit of rounding, inspired\n\t\t* by James Tursa?s half-precision code. */\n\n\t\t_floatView[ 0 ] = val;\n\t\tconst x = _int32View[ 0 ];\n\n\t\tlet bits = ( x >> 16 ) & 0x8000; /* Get the sign */\n\t\tlet m = ( x >> 12 ) & 0x07ff; /* Keep one extra bit for rounding */\n\t\tconst e = ( x >> 23 ) & 0xff; /* Using int is faster here */\n\n\t\t/* If zero, or denormal, or exponent underflows too much for a denormal\n\t\t\t* half, return signed zero. */\n\t\tif ( e < 103 ) return bits;\n\n\t\t/* If NaN, return NaN. If Inf or exponent overflow, return Inf. */\n\t\tif ( e > 142 ) {\n\n\t\t\tbits |= 0x7c00;\n\t\t\t/* If exponent was 0xff and one mantissa bit was set, it means NaN,\n\t\t\t\t\t\t* not Inf, so make sure we set one mantissa bit too. */\n\t\t\tbits |= ( ( e == 255 ) ? 0 : 1 ) && ( x & 0x007fffff );\n\t\t\treturn bits;\n\n\t\t}\n\n\t\t/* If exponent underflows but not too much, return a denormal */\n\t\tif ( e < 113 ) {\n\n\t\t\tm |= 0x0800;\n\t\t\t/* Extra rounding may overflow and set mantissa to 0 and exponent\n\t\t\t\t* to 1, which is OK. */\n\t\t\tbits |= ( m >> ( 114 - e ) ) + ( ( m >> ( 113 - e ) ) & 1 );\n\t\t\treturn bits;\n\n\t\t}\n\n\t\tbits |= ( ( e - 112 ) << 10 ) | ( m >> 1 );\n\t\t/* Extra rounding. An overflow will set mantissa to 0 and increment\n\t\t\t* the exponent, which is OK. */\n\t\tbits += m & 1;\n\t\treturn bits;\n\n\t}\n\n};\n\nconst LOD_MIN = 4;\nconst LOD_MAX = 8;\nconst SIZE_MAX = Math.pow( 2, LOD_MAX );\n\n// The standard deviations (radians) associated with the extra mips. These are\n// chosen to approximate a Trowbridge-Reitz distribution function times the\n// geometric shadowing function. These sigma values squared must match the\n// variance #defines in cube_uv_reflection_fragment.glsl.js.\nconst EXTRA_LOD_SIGMA = [ 0.125, 0.215, 0.35, 0.446, 0.526, 0.582 ];\n\nconst TOTAL_LODS = LOD_MAX - LOD_MIN + 1 + EXTRA_LOD_SIGMA.length;\n\n// The maximum length of the blur for loop. Smaller sigmas will use fewer\n// samples and exit early, but not recompile the shader.\nconst MAX_SAMPLES = 20;\n\nconst ENCODINGS = {\n\t[ LinearEncoding ]: 0,\n\t[ sRGBEncoding ]: 1,\n\t[ RGBEEncoding ]: 2,\n\t[ RGBM7Encoding ]: 3,\n\t[ RGBM16Encoding ]: 4,\n\t[ RGBDEncoding ]: 5,\n\t[ GammaEncoding ]: 6\n};\n\nconst _flatCamera = /*@__PURE__*/ new OrthographicCamera();\nconst { _lodPlanes, _sizeLods, _sigmas } = /*@__PURE__*/ _createPlanes();\nconst _clearColor = /*@__PURE__*/ new Color();\nlet _oldTarget = null;\n\n// Golden Ratio\nconst PHI = ( 1 + Math.sqrt( 5 ) ) / 2;\nconst INV_PHI = 1 / PHI;\n\n// Vertices of a dodecahedron (except the opposites, which represent the\n// same axis), used as axis directions evenly spread on a sphere.\nconst _axisDirections = [\n\t/*@__PURE__*/ new Vector3( 1, 1, 1 ),\n\t/*@__PURE__*/ new Vector3( - 1, 1, 1 ),\n\t/*@__PURE__*/ new Vector3( 1, 1, - 1 ),\n\t/*@__PURE__*/ new Vector3( - 1, 1, - 1 ),\n\t/*@__PURE__*/ new Vector3( 0, PHI, INV_PHI ),\n\t/*@__PURE__*/ new Vector3( 0, PHI, - INV_PHI ),\n\t/*@__PURE__*/ new Vector3( INV_PHI, 0, PHI ),\n\t/*@__PURE__*/ new Vector3( - INV_PHI, 0, PHI ),\n\t/*@__PURE__*/ new Vector3( PHI, INV_PHI, 0 ),\n\t/*@__PURE__*/ new Vector3( - PHI, INV_PHI, 0 ) ];\n\n/**\n * This class generates a Prefiltered, Mipmapped Radiance Environment Map\n * (PMREM) from a cubeMap environment texture. This allows different levels of\n * blur to be quickly accessed based on material roughness. It is packed into a\n * special CubeUV format that allows us to perform custom interpolation so that\n * we can support nonlinear formats such as RGBE. Unlike a traditional mipmap\n * chain, it only goes down to the LOD_MIN level (above), and then creates extra\n * even more filtered 'mips' at the same LOD_MIN resolution, associated with\n * higher roughness levels. In this way we maintain resolution to smoothly\n * interpolate diffuse lighting while limiting sampling computation.\n */\n\nclass PMREMGenerator {\n\n\tconstructor( renderer ) {\n\n\t\tthis._renderer = renderer;\n\t\tthis._pingPongRenderTarget = null;\n\n\t\tthis._blurMaterial = _getBlurShader( MAX_SAMPLES );\n\t\tthis._equirectShader = null;\n\t\tthis._cubemapShader = null;\n\n\t\tthis._compileMaterial( this._blurMaterial );\n\n\t}\n\n\t/**\n\t * Generates a PMREM from a supplied Scene, which can be faster than using an\n\t * image if networking bandwidth is low. Optional sigma specifies a blur radius\n\t * in radians to be applied to the scene before PMREM generation. Optional near\n\t * and far planes ensure the scene is rendered in its entirety (the cubeCamera\n\t * is placed at the origin).\n\t */\n\tfromScene( scene, sigma = 0, near = 0.1, far = 100 ) {\n\n\t\t_oldTarget = this._renderer.getRenderTarget();\n\t\tconst cubeUVRenderTarget = this._allocateTargets();\n\n\t\tthis._sceneToCubeUV( scene, near, far, cubeUVRenderTarget );\n\t\tif ( sigma > 0 ) {\n\n\t\t\tthis._blur( cubeUVRenderTarget, 0, 0, sigma );\n\n\t\t}\n\n\t\tthis._applyPMREM( cubeUVRenderTarget );\n\t\tthis._cleanup( cubeUVRenderTarget );\n\n\t\treturn cubeUVRenderTarget;\n\n\t}\n\n\t/**\n\t * Generates a PMREM from an equirectangular texture, which can be either LDR\n\t * (RGBFormat) or HDR (RGBEFormat). The ideal input image size is 1k (1024 x 512),\n\t * as this matches best with the 256 x 256 cubemap output.\n\t */\n\tfromEquirectangular( equirectangular ) {\n\n\t\treturn this._fromTexture( equirectangular );\n\n\t}\n\n\t/**\n\t * Generates a PMREM from an cubemap texture, which can be either LDR\n\t * (RGBFormat) or HDR (RGBEFormat). The ideal input cube size is 256 x 256,\n\t * as this matches best with the 256 x 256 cubemap output.\n\t */\n\tfromCubemap( cubemap ) {\n\n\t\treturn this._fromTexture( cubemap );\n\n\t}\n\n\t/**\n\t * Pre-compiles the cubemap shader. You can get faster start-up by invoking this method during\n\t * your texture's network fetch for increased concurrency.\n\t */\n\tcompileCubemapShader() {\n\n\t\tif ( this._cubemapShader === null ) {\n\n\t\t\tthis._cubemapShader = _getCubemapShader();\n\t\t\tthis._compileMaterial( this._cubemapShader );\n\n\t\t}\n\n\t}\n\n\t/**\n\t * Pre-compiles the equirectangular shader. You can get faster start-up by invoking this method during\n\t * your texture's network fetch for increased concurrency.\n\t */\n\tcompileEquirectangularShader() {\n\n\t\tif ( this._equirectShader === null ) {\n\n\t\t\tthis._equirectShader = _getEquirectShader();\n\t\t\tthis._compileMaterial( this._equirectShader );\n\n\t\t}\n\n\t}\n\n\t/**\n\t * Disposes of the PMREMGenerator's internal memory. Note that PMREMGenerator is a static class,\n\t * so you should not need more than one PMREMGenerator object. If you do, calling dispose() on\n\t * one of them will cause any others to also become unusable.\n\t */\n\tdispose() {\n\n\t\tthis._blurMaterial.dispose();\n\n\t\tif ( this._cubemapShader !== null ) this._cubemapShader.dispose();\n\t\tif ( this._equirectShader !== null ) this._equirectShader.dispose();\n\n\t\tfor ( let i = 0; i < _lodPlanes.length; i ++ ) {\n\n\t\t\t_lodPlanes[ i ].dispose();\n\n\t\t}\n\n\t}\n\n\t// private interface\n\n\t_cleanup( outputTarget ) {\n\n\t\tthis._pingPongRenderTarget.dispose();\n\t\tthis._renderer.setRenderTarget( _oldTarget );\n\t\toutputTarget.scissorTest = false;\n\t\t_setViewport( outputTarget, 0, 0, outputTarget.width, outputTarget.height );\n\n\t}\n\n\t_fromTexture( texture ) {\n\n\t\t_oldTarget = this._renderer.getRenderTarget();\n\t\tconst cubeUVRenderTarget = this._allocateTargets( texture );\n\t\tthis._textureToCubeUV( texture, cubeUVRenderTarget );\n\t\tthis._applyPMREM( cubeUVRenderTarget );\n\t\tthis._cleanup( cubeUVRenderTarget );\n\n\t\treturn cubeUVRenderTarget;\n\n\t}\n\n\t_allocateTargets( texture ) { // warning: null texture is valid\n\n\t\tconst params = {\n\t\t\tmagFilter: NearestFilter,\n\t\t\tminFilter: NearestFilter,\n\t\t\tgenerateMipmaps: false,\n\t\t\ttype: UnsignedByteType,\n\t\t\tformat: RGBEFormat,\n\t\t\tencoding: _isLDR( texture ) ? texture.encoding : RGBEEncoding,\n\t\t\tdepthBuffer: false\n\t\t};\n\n\t\tconst cubeUVRenderTarget = _createRenderTarget( params );\n\t\tcubeUVRenderTarget.depthBuffer = texture ? false : true;\n\t\tthis._pingPongRenderTarget = _createRenderTarget( params );\n\t\treturn cubeUVRenderTarget;\n\n\t}\n\n\t_compileMaterial( material ) {\n\n\t\tconst tmpMesh = new Mesh( _lodPlanes[ 0 ], material );\n\t\tthis._renderer.compile( tmpMesh, _flatCamera );\n\n\t}\n\n\t_sceneToCubeUV( scene, near, far, cubeUVRenderTarget ) {\n\n\t\tconst fov = 90;\n\t\tconst aspect = 1;\n\t\tconst cubeCamera = new PerspectiveCamera( fov, aspect, near, far );\n\t\tconst upSign = [ 1, - 1, 1, 1, 1, 1 ];\n\t\tconst forwardSign = [ 1, 1, 1, - 1, - 1, - 1 ];\n\t\tconst renderer = this._renderer;\n\n\t\tconst outputEncoding = renderer.outputEncoding;\n\t\tconst toneMapping = renderer.toneMapping;\n\t\trenderer.getClearColor( _clearColor );\n\t\tconst clearAlpha = renderer.getClearAlpha();\n\n\t\trenderer.toneMapping = NoToneMapping;\n\t\trenderer.outputEncoding = LinearEncoding;\n\n\t\tlet background = scene.background;\n\t\tif ( background && background.isColor ) {\n\n\t\t\tbackground.convertSRGBToLinear();\n\t\t\t// Convert linear to RGBE\n\t\t\tconst maxComponent = Math.max( background.r, background.g, background.b );\n\t\t\tconst fExp = Math.min( Math.max( Math.ceil( Math.log2( maxComponent ) ), - 128.0 ), 127.0 );\n\t\t\tbackground = background.multiplyScalar( Math.pow( 2.0, - fExp ) );\n\t\t\tconst alpha = ( fExp + 128.0 ) / 255.0;\n\t\t\trenderer.setClearColor( background, alpha );\n\t\t\tscene.background = null;\n\n\t\t}\n\n\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\tconst col = i % 3;\n\t\t\tif ( col == 0 ) {\n\n\t\t\t\tcubeCamera.up.set( 0, upSign[ i ], 0 );\n\t\t\t\tcubeCamera.lookAt( forwardSign[ i ], 0, 0 );\n\n\t\t\t} else if ( col == 1 ) {\n\n\t\t\t\tcubeCamera.up.set( 0, 0, upSign[ i ] );\n\t\t\t\tcubeCamera.lookAt( 0, forwardSign[ i ], 0 );\n\n\t\t\t} else {\n\n\t\t\t\tcubeCamera.up.set( 0, upSign[ i ], 0 );\n\t\t\t\tcubeCamera.lookAt( 0, 0, forwardSign[ i ] );\n\n\t\t\t}\n\n\t\t\t_setViewport( cubeUVRenderTarget,\n\t\t\t\tcol * SIZE_MAX, i > 2 ? SIZE_MAX : 0, SIZE_MAX, SIZE_MAX );\n\t\t\trenderer.setRenderTarget( cubeUVRenderTarget );\n\t\t\trenderer.render( scene, cubeCamera );\n\n\t\t}\n\n\t\trenderer.toneMapping = toneMapping;\n\t\trenderer.outputEncoding = outputEncoding;\n\t\trenderer.setClearColor( _clearColor, clearAlpha );\n\n\t}\n\n\t_textureToCubeUV( texture, cubeUVRenderTarget ) {\n\n\t\tconst renderer = this._renderer;\n\n\t\tif ( texture.isCubeTexture ) {\n\n\t\t\tif ( this._cubemapShader == null ) {\n\n\t\t\t\tthis._cubemapShader = _getCubemapShader();\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tif ( this._equirectShader == null ) {\n\n\t\t\t\tthis._equirectShader = _getEquirectShader();\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst material = texture.isCubeTexture ? this._cubemapShader : this._equirectShader;\n\t\tconst mesh = new Mesh( _lodPlanes[ 0 ], material );\n\n\t\tconst uniforms = material.uniforms;\n\n\t\tuniforms[ 'envMap' ].value = texture;\n\n\t\tif ( ! texture.isCubeTexture ) {\n\n\t\t\tuniforms[ 'texelSize' ].value.set( 1.0 / texture.image.width, 1.0 / texture.image.height );\n\n\t\t}\n\n\t\tuniforms[ 'inputEncoding' ].value = ENCODINGS[ texture.encoding ];\n\t\tuniforms[ 'outputEncoding' ].value = ENCODINGS[ cubeUVRenderTarget.texture.encoding ];\n\n\t\t_setViewport( cubeUVRenderTarget, 0, 0, 3 * SIZE_MAX, 2 * SIZE_MAX );\n\n\t\trenderer.setRenderTarget( cubeUVRenderTarget );\n\t\trenderer.render( mesh, _flatCamera );\n\n\t}\n\n\t_applyPMREM( cubeUVRenderTarget ) {\n\n\t\tconst renderer = this._renderer;\n\t\tconst autoClear = renderer.autoClear;\n\t\trenderer.autoClear = false;\n\n\t\tfor ( let i = 1; i < TOTAL_LODS; i ++ ) {\n\n\t\t\tconst sigma = Math.sqrt( _sigmas[ i ] * _sigmas[ i ] - _sigmas[ i - 1 ] * _sigmas[ i - 1 ] );\n\n\t\t\tconst poleAxis = _axisDirections[ ( i - 1 ) % _axisDirections.length ];\n\n\t\t\tthis._blur( cubeUVRenderTarget, i - 1, i, sigma, poleAxis );\n\n\t\t}\n\n\t\trenderer.autoClear = autoClear;\n\n\t}\n\n\t/**\n\t * This is a two-pass Gaussian blur for a cubemap. Normally this is done\n\t * vertically and horizontally, but this breaks down on a cube. Here we apply\n\t * the blur latitudinally (around the poles), and then longitudinally (towards\n\t * the poles) to approximate the orthogonally-separable blur. It is least\n\t * accurate at the poles, but still does a decent job.\n\t */\n\t_blur( cubeUVRenderTarget, lodIn, lodOut, sigma, poleAxis ) {\n\n\t\tconst pingPongRenderTarget = this._pingPongRenderTarget;\n\n\t\tthis._halfBlur(\n\t\t\tcubeUVRenderTarget,\n\t\t\tpingPongRenderTarget,\n\t\t\tlodIn,\n\t\t\tlodOut,\n\t\t\tsigma,\n\t\t\t'latitudinal',\n\t\t\tpoleAxis );\n\n\t\tthis._halfBlur(\n\t\t\tpingPongRenderTarget,\n\t\t\tcubeUVRenderTarget,\n\t\t\tlodOut,\n\t\t\tlodOut,\n\t\t\tsigma,\n\t\t\t'longitudinal',\n\t\t\tpoleAxis );\n\n\t}\n\n\t_halfBlur( targetIn, targetOut, lodIn, lodOut, sigmaRadians, direction, poleAxis ) {\n\n\t\tconst renderer = this._renderer;\n\t\tconst blurMaterial = this._blurMaterial;\n\n\t\tif ( direction !== 'latitudinal' && direction !== 'longitudinal' ) {\n\n\t\t\tconsole.error(\n\t\t\t\t'blur direction must be either latitudinal or longitudinal!' );\n\n\t\t}\n\n\t\t// Number of standard deviations at which to cut off the discrete approximation.\n\t\tconst STANDARD_DEVIATIONS = 3;\n\n\t\tconst blurMesh = new Mesh( _lodPlanes[ lodOut ], blurMaterial );\n\t\tconst blurUniforms = blurMaterial.uniforms;\n\n\t\tconst pixels = _sizeLods[ lodIn ] - 1;\n\t\tconst radiansPerPixel = isFinite( sigmaRadians ) ? Math.PI / ( 2 * pixels ) : 2 * Math.PI / ( 2 * MAX_SAMPLES - 1 );\n\t\tconst sigmaPixels = sigmaRadians / radiansPerPixel;\n\t\tconst samples = isFinite( sigmaRadians ) ? 1 + Math.floor( STANDARD_DEVIATIONS * sigmaPixels ) : MAX_SAMPLES;\n\n\t\tif ( samples > MAX_SAMPLES ) {\n\n\t\t\tconsole.warn( `sigmaRadians, ${\n\t\t\t\tsigmaRadians}, is too large and will clip, as it requested ${\n\t\t\t\tsamples} samples when the maximum is set to ${MAX_SAMPLES}` );\n\n\t\t}\n\n\t\tconst weights = [];\n\t\tlet sum = 0;\n\n\t\tfor ( let i = 0; i < MAX_SAMPLES; ++ i ) {\n\n\t\t\tconst x = i / sigmaPixels;\n\t\t\tconst weight = Math.exp( - x * x / 2 );\n\t\t\tweights.push( weight );\n\n\t\t\tif ( i == 0 ) {\n\n\t\t\t\tsum += weight;\n\n\t\t\t} else if ( i < samples ) {\n\n\t\t\t\tsum += 2 * weight;\n\n\t\t\t}\n\n\t\t}\n\n\t\tfor ( let i = 0; i < weights.length; i ++ ) {\n\n\t\t\tweights[ i ] = weights[ i ] / sum;\n\n\t\t}\n\n\t\tblurUniforms[ 'envMap' ].value = targetIn.texture;\n\t\tblurUniforms[ 'samples' ].value = samples;\n\t\tblurUniforms[ 'weights' ].value = weights;\n\t\tblurUniforms[ 'latitudinal' ].value = direction === 'latitudinal';\n\n\t\tif ( poleAxis ) {\n\n\t\t\tblurUniforms[ 'poleAxis' ].value = poleAxis;\n\n\t\t}\n\n\t\tblurUniforms[ 'dTheta' ].value = radiansPerPixel;\n\t\tblurUniforms[ 'mipInt' ].value = LOD_MAX - lodIn;\n\t\tblurUniforms[ 'inputEncoding' ].value = ENCODINGS[ targetIn.texture.encoding ];\n\t\tblurUniforms[ 'outputEncoding' ].value = ENCODINGS[ targetIn.texture.encoding ];\n\n\t\tconst outputSize = _sizeLods[ lodOut ];\n\t\tconst x = 3 * Math.max( 0, SIZE_MAX - 2 * outputSize );\n\t\tconst y = ( lodOut === 0 ? 0 : 2 * SIZE_MAX ) + 2 * outputSize * ( lodOut > LOD_MAX - LOD_MIN ? lodOut - LOD_MAX + LOD_MIN : 0 );\n\n\t\t_setViewport( targetOut, x, y, 3 * outputSize, 2 * outputSize );\n\t\trenderer.setRenderTarget( targetOut );\n\t\trenderer.render( blurMesh, _flatCamera );\n\n\t}\n\n}\n\nfunction _isLDR( texture ) {\n\n\tif ( texture === undefined || texture.type !== UnsignedByteType ) return false;\n\n\treturn texture.encoding === LinearEncoding || texture.encoding === sRGBEncoding || texture.encoding === GammaEncoding;\n\n}\n\nfunction _createPlanes() {\n\n\tconst _lodPlanes = [];\n\tconst _sizeLods = [];\n\tconst _sigmas = [];\n\n\tlet lod = LOD_MAX;\n\n\tfor ( let i = 0; i < TOTAL_LODS; i ++ ) {\n\n\t\tconst sizeLod = Math.pow( 2, lod );\n\t\t_sizeLods.push( sizeLod );\n\t\tlet sigma = 1.0 / sizeLod;\n\n\t\tif ( i > LOD_MAX - LOD_MIN ) {\n\n\t\t\tsigma = EXTRA_LOD_SIGMA[ i - LOD_MAX + LOD_MIN - 1 ];\n\n\t\t} else if ( i == 0 ) {\n\n\t\t\tsigma = 0;\n\n\t\t}\n\n\t\t_sigmas.push( sigma );\n\n\t\tconst texelSize = 1.0 / ( sizeLod - 1 );\n\t\tconst min = - texelSize / 2;\n\t\tconst max = 1 + texelSize / 2;\n\t\tconst uv1 = [ min, min, max, min, max, max, min, min, max, max, min, max ];\n\n\t\tconst cubeFaces = 6;\n\t\tconst vertices = 6;\n\t\tconst positionSize = 3;\n\t\tconst uvSize = 2;\n\t\tconst faceIndexSize = 1;\n\n\t\tconst position = new Float32Array( positionSize * vertices * cubeFaces );\n\t\tconst uv = new Float32Array( uvSize * vertices * cubeFaces );\n\t\tconst faceIndex = new Float32Array( faceIndexSize * vertices * cubeFaces );\n\n\t\tfor ( let face = 0; face < cubeFaces; face ++ ) {\n\n\t\t\tconst x = ( face % 3 ) * 2 / 3 - 1;\n\t\t\tconst y = face > 2 ? 0 : - 1;\n\t\t\tconst coordinates = [\n\t\t\t\tx, y, 0,\n\t\t\t\tx + 2 / 3, y, 0,\n\t\t\t\tx + 2 / 3, y + 1, 0,\n\t\t\t\tx, y, 0,\n\t\t\t\tx + 2 / 3, y + 1, 0,\n\t\t\t\tx, y + 1, 0\n\t\t\t];\n\t\t\tposition.set( coordinates, positionSize * vertices * face );\n\t\t\tuv.set( uv1, uvSize * vertices * face );\n\t\t\tconst fill = [ face, face, face, face, face, face ];\n\t\t\tfaceIndex.set( fill, faceIndexSize * vertices * face );\n\n\t\t}\n\n\t\tconst planes = new BufferGeometry();\n\t\tplanes.setAttribute( 'position', new BufferAttribute( position, positionSize ) );\n\t\tplanes.setAttribute( 'uv', new BufferAttribute( uv, uvSize ) );\n\t\tplanes.setAttribute( 'faceIndex', new BufferAttribute( faceIndex, faceIndexSize ) );\n\t\t_lodPlanes.push( planes );\n\n\t\tif ( lod > LOD_MIN ) {\n\n\t\t\tlod --;\n\n\t\t}\n\n\t}\n\n\treturn { _lodPlanes, _sizeLods, _sigmas };\n\n}\n\nfunction _createRenderTarget( params ) {\n\n\tconst cubeUVRenderTarget = new WebGLRenderTarget( 3 * SIZE_MAX, 3 * SIZE_MAX, params );\n\tcubeUVRenderTarget.texture.mapping = CubeUVReflectionMapping;\n\tcubeUVRenderTarget.texture.name = 'PMREM.cubeUv';\n\tcubeUVRenderTarget.scissorTest = true;\n\treturn cubeUVRenderTarget;\n\n}\n\nfunction _setViewport( target, x, y, width, height ) {\n\n\ttarget.viewport.set( x, y, width, height );\n\ttarget.scissor.set( x, y, width, height );\n\n}\n\nfunction _getBlurShader( maxSamples ) {\n\n\tconst weights = new Float32Array( maxSamples );\n\tconst poleAxis = new Vector3( 0, 1, 0 );\n\tconst shaderMaterial = new RawShaderMaterial( {\n\n\t\tname: 'SphericalGaussianBlur',\n\n\t\tdefines: { 'n': maxSamples },\n\n\t\tuniforms: {\n\t\t\t'envMap': { value: null },\n\t\t\t'samples': { value: 1 },\n\t\t\t'weights': { value: weights },\n\t\t\t'latitudinal': { value: false },\n\t\t\t'dTheta': { value: 0 },\n\t\t\t'mipInt': { value: 0 },\n\t\t\t'poleAxis': { value: poleAxis },\n\t\t\t'inputEncoding': { value: ENCODINGS[ LinearEncoding ] },\n\t\t\t'outputEncoding': { value: ENCODINGS[ LinearEncoding ] }\n\t\t},\n\n\t\tvertexShader: _getCommonVertexShader(),\n\n\t\tfragmentShader: /* glsl */`\n\n\t\t\tprecision mediump float;\n\t\t\tprecision mediump int;\n\n\t\t\tvarying vec3 vOutputDirection;\n\n\t\t\tuniform sampler2D envMap;\n\t\t\tuniform int samples;\n\t\t\tuniform float weights[ n ];\n\t\t\tuniform bool latitudinal;\n\t\t\tuniform float dTheta;\n\t\t\tuniform float mipInt;\n\t\t\tuniform vec3 poleAxis;\n\n\t\t\t${ _getEncodings() }\n\n\t\t\t#define ENVMAP_TYPE_CUBE_UV\n\t\t\t#include <cube_uv_reflection_fragment>\n\n\t\t\tvec3 getSample( float theta, vec3 axis ) {\n\n\t\t\t\tfloat cosTheta = cos( theta );\n\t\t\t\t// Rodrigues' axis-angle rotation\n\t\t\t\tvec3 sampleDirection = vOutputDirection * cosTheta\n\t\t\t\t\t+ cross( axis, vOutputDirection ) * sin( theta )\n\t\t\t\t\t+ axis * dot( axis, vOutputDirection ) * ( 1.0 - cosTheta );\n\n\t\t\t\treturn bilinearCubeUV( envMap, sampleDirection, mipInt );\n\n\t\t\t}\n\n\t\t\tvoid main() {\n\n\t\t\t\tvec3 axis = latitudinal ? poleAxis : cross( poleAxis, vOutputDirection );\n\n\t\t\t\tif ( all( equal( axis, vec3( 0.0 ) ) ) ) {\n\n\t\t\t\t\taxis = vec3( vOutputDirection.z, 0.0, - vOutputDirection.x );\n\n\t\t\t\t}\n\n\t\t\t\taxis = normalize( axis );\n\n\t\t\t\tgl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );\n\t\t\t\tgl_FragColor.rgb += weights[ 0 ] * getSample( 0.0, axis );\n\n\t\t\t\tfor ( int i = 1; i < n; i++ ) {\n\n\t\t\t\t\tif ( i >= samples ) {\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tfloat theta = dTheta * float( i );\n\t\t\t\t\tgl_FragColor.rgb += weights[ i ] * getSample( -1.0 * theta, axis );\n\t\t\t\t\tgl_FragColor.rgb += weights[ i ] * getSample( theta, axis );\n\n\t\t\t\t}\n\n\t\t\t\tgl_FragColor = linearToOutputTexel( gl_FragColor );\n\n\t\t\t}\n\t\t`,\n\n\t\tblending: NoBlending,\n\t\tdepthTest: false,\n\t\tdepthWrite: false\n\n\t} );\n\n\treturn shaderMaterial;\n\n}\n\nfunction _getEquirectShader() {\n\n\tconst texelSize = new Vector2( 1, 1 );\n\tconst shaderMaterial = new RawShaderMaterial( {\n\n\t\tname: 'EquirectangularToCubeUV',\n\n\t\tuniforms: {\n\t\t\t'envMap': { value: null },\n\t\t\t'texelSize': { value: texelSize },\n\t\t\t'inputEncoding': { value: ENCODINGS[ LinearEncoding ] },\n\t\t\t'outputEncoding': { value: ENCODINGS[ LinearEncoding ] }\n\t\t},\n\n\t\tvertexShader: _getCommonVertexShader(),\n\n\t\tfragmentShader: /* glsl */`\n\n\t\t\tprecision mediump float;\n\t\t\tprecision mediump int;\n\n\t\t\tvarying vec3 vOutputDirection;\n\n\t\t\tuniform sampler2D envMap;\n\t\t\tuniform vec2 texelSize;\n\n\t\t\t${ _getEncodings() }\n\n\t\t\t#include <common>\n\n\t\t\tvoid main() {\n\n\t\t\t\tgl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );\n\n\t\t\t\tvec3 outputDirection = normalize( vOutputDirection );\n\t\t\t\tvec2 uv = equirectUv( outputDirection );\n\n\t\t\t\tvec2 f = fract( uv / texelSize - 0.5 );\n\t\t\t\tuv -= f * texelSize;\n\t\t\t\tvec3 tl = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;\n\t\t\t\tuv.x += texelSize.x;\n\t\t\t\tvec3 tr = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;\n\t\t\t\tuv.y += texelSize.y;\n\t\t\t\tvec3 br = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;\n\t\t\t\tuv.x -= texelSize.x;\n\t\t\t\tvec3 bl = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;\n\n\t\t\t\tvec3 tm = mix( tl, tr, f.x );\n\t\t\t\tvec3 bm = mix( bl, br, f.x );\n\t\t\t\tgl_FragColor.rgb = mix( tm, bm, f.y );\n\n\t\t\t\tgl_FragColor = linearToOutputTexel( gl_FragColor );\n\n\t\t\t}\n\t\t`,\n\n\t\tblending: NoBlending,\n\t\tdepthTest: false,\n\t\tdepthWrite: false\n\n\t} );\n\n\treturn shaderMaterial;\n\n}\n\nfunction _getCubemapShader() {\n\n\tconst shaderMaterial = new RawShaderMaterial( {\n\n\t\tname: 'CubemapToCubeUV',\n\n\t\tuniforms: {\n\t\t\t'envMap': { value: null },\n\t\t\t'inputEncoding': { value: ENCODINGS[ LinearEncoding ] },\n\t\t\t'outputEncoding': { value: ENCODINGS[ LinearEncoding ] }\n\t\t},\n\n\t\tvertexShader: _getCommonVertexShader(),\n\n\t\tfragmentShader: /* glsl */`\n\n\t\t\tprecision mediump float;\n\t\t\tprecision mediump int;\n\n\t\t\tvarying vec3 vOutputDirection;\n\n\t\t\tuniform samplerCube envMap;\n\n\t\t\t${ _getEncodings() }\n\n\t\t\tvoid main() {\n\n\t\t\t\tgl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );\n\t\t\t\tgl_FragColor.rgb = envMapTexelToLinear( textureCube( envMap, vec3( - vOutputDirection.x, vOutputDirection.yz ) ) ).rgb;\n\t\t\t\tgl_FragColor = linearToOutputTexel( gl_FragColor );\n\n\t\t\t}\n\t\t`,\n\n\t\tblending: NoBlending,\n\t\tdepthTest: false,\n\t\tdepthWrite: false\n\n\t} );\n\n\treturn shaderMaterial;\n\n}\n\nfunction _getCommonVertexShader() {\n\n\treturn /* glsl */`\n\n\t\tprecision mediump float;\n\t\tprecision mediump int;\n\n\t\tattribute vec3 position;\n\t\tattribute vec2 uv;\n\t\tattribute float faceIndex;\n\n\t\tvarying vec3 vOutputDirection;\n\n\t\t// RH coordinate system; PMREM face-indexing convention\n\t\tvec3 getDirection( vec2 uv, float face ) {\n\n\t\t\tuv = 2.0 * uv - 1.0;\n\n\t\t\tvec3 direction = vec3( uv, 1.0 );\n\n\t\t\tif ( face == 0.0 ) {\n\n\t\t\t\tdirection = direction.zyx; // ( 1, v, u ) pos x\n\n\t\t\t} else if ( face == 1.0 ) {\n\n\t\t\t\tdirection = direction.xzy;\n\t\t\t\tdirection.xz *= -1.0; // ( -u, 1, -v ) pos y\n\n\t\t\t} else if ( face == 2.0 ) {\n\n\t\t\t\tdirection.x *= -1.0; // ( -u, v, 1 ) pos z\n\n\t\t\t} else if ( face == 3.0 ) {\n\n\t\t\t\tdirection = direction.zyx;\n\t\t\t\tdirection.xz *= -1.0; // ( -1, v, -u ) neg x\n\n\t\t\t} else if ( face == 4.0 ) {\n\n\t\t\t\tdirection = direction.xzy;\n\t\t\t\tdirection.xy *= -1.0; // ( -u, -1, v ) neg y\n\n\t\t\t} else if ( face == 5.0 ) {\n\n\t\t\t\tdirection.z *= -1.0; // ( u, v, -1 ) neg z\n\n\t\t\t}\n\n\t\t\treturn direction;\n\n\t\t}\n\n\t\tvoid main() {\n\n\t\t\tvOutputDirection = getDirection( uv, faceIndex );\n\t\t\tgl_Position = vec4( position, 1.0 );\n\n\t\t}\n\t`;\n\n}\n\nfunction _getEncodings() {\n\n\treturn /* glsl */`\n\n\t\tuniform int inputEncoding;\n\t\tuniform int outputEncoding;\n\n\t\t#include <encodings_pars_fragment>\n\n\t\tvec4 inputTexelToLinear( vec4 value ) {\n\n\t\t\tif ( inputEncoding == 0 ) {\n\n\t\t\t\treturn value;\n\n\t\t\t} else if ( inputEncoding == 1 ) {\n\n\t\t\t\treturn sRGBToLinear( value );\n\n\t\t\t} else if ( inputEncoding == 2 ) {\n\n\t\t\t\treturn RGBEToLinear( value );\n\n\t\t\t} else if ( inputEncoding == 3 ) {\n\n\t\t\t\treturn RGBMToLinear( value, 7.0 );\n\n\t\t\t} else if ( inputEncoding == 4 ) {\n\n\t\t\t\treturn RGBMToLinear( value, 16.0 );\n\n\t\t\t} else if ( inputEncoding == 5 ) {\n\n\t\t\t\treturn RGBDToLinear( value, 256.0 );\n\n\t\t\t} else {\n\n\t\t\t\treturn GammaToLinear( value, 2.2 );\n\n\t\t\t}\n\n\t\t}\n\n\t\tvec4 linearToOutputTexel( vec4 value ) {\n\n\t\t\tif ( outputEncoding == 0 ) {\n\n\t\t\t\treturn value;\n\n\t\t\t} else if ( outputEncoding == 1 ) {\n\n\t\t\t\treturn LinearTosRGB( value );\n\n\t\t\t} else if ( outputEncoding == 2 ) {\n\n\t\t\t\treturn LinearToRGBE( value );\n\n\t\t\t} else if ( outputEncoding == 3 ) {\n\n\t\t\t\treturn LinearToRGBM( value, 7.0 );\n\n\t\t\t} else if ( outputEncoding == 4 ) {\n\n\t\t\t\treturn LinearToRGBM( value, 16.0 );\n\n\t\t\t} else if ( outputEncoding == 5 ) {\n\n\t\t\t\treturn LinearToRGBD( value, 256.0 );\n\n\t\t\t} else {\n\n\t\t\t\treturn LinearToGamma( value, 2.2 );\n\n\t\t\t}\n\n\t\t}\n\n\t\tvec4 envMapTexelToLinear( vec4 color ) {\n\n\t\t\treturn inputTexelToLinear( color );\n\n\t\t}\n\t`;\n\n}\n\nfunction Face4( a, b, c, d, normal, color, materialIndex ) {\n\n\tconsole.warn( 'THREE.Face4 has been removed. A THREE.Face3 will be created instead.' );\n\treturn new Face3( a, b, c, normal, color, materialIndex );\n\n}\n\nconst LineStrip = 0;\nconst LinePieces = 1;\nconst NoColors = 0;\nconst FaceColors = 1;\nconst VertexColors = 2;\n\nfunction MeshFaceMaterial( materials ) {\n\n\tconsole.warn( 'THREE.MeshFaceMaterial has been removed. Use an Array instead.' );\n\treturn materials;\n\n}\n\nfunction MultiMaterial( materials = [] ) {\n\n\tconsole.warn( 'THREE.MultiMaterial has been removed. Use an Array instead.' );\n\tmaterials.isMultiMaterial = true;\n\tmaterials.materials = materials;\n\tmaterials.clone = function () {\n\n\t\treturn materials.slice();\n\n\t};\n\n\treturn materials;\n\n}\n\nfunction PointCloud( geometry, material ) {\n\n\tconsole.warn( 'THREE.PointCloud has been renamed to THREE.Points.' );\n\treturn new Points( geometry, material );\n\n}\n\nfunction Particle( material ) {\n\n\tconsole.warn( 'THREE.Particle has been renamed to THREE.Sprite.' );\n\treturn new Sprite( material );\n\n}\n\nfunction ParticleSystem( geometry, material ) {\n\n\tconsole.warn( 'THREE.ParticleSystem has been renamed to THREE.Points.' );\n\treturn new Points( geometry, material );\n\n}\n\nfunction PointCloudMaterial( parameters ) {\n\n\tconsole.warn( 'THREE.PointCloudMaterial has been renamed to THREE.PointsMaterial.' );\n\treturn new PointsMaterial( parameters );\n\n}\n\nfunction ParticleBasicMaterial( parameters ) {\n\n\tconsole.warn( 'THREE.ParticleBasicMaterial has been renamed to THREE.PointsMaterial.' );\n\treturn new PointsMaterial( parameters );\n\n}\n\nfunction ParticleSystemMaterial( parameters ) {\n\n\tconsole.warn( 'THREE.ParticleSystemMaterial has been renamed to THREE.PointsMaterial.' );\n\treturn new PointsMaterial( parameters );\n\n}\n\nfunction Vertex( x, y, z ) {\n\n\tconsole.warn( 'THREE.Vertex has been removed. Use THREE.Vector3 instead.' );\n\treturn new Vector3( x, y, z );\n\n}\n\n//\n\nfunction DynamicBufferAttribute( array, itemSize ) {\n\n\tconsole.warn( 'THREE.DynamicBufferAttribute has been removed. Use new THREE.BufferAttribute().setUsage( THREE.DynamicDrawUsage ) instead.' );\n\treturn new BufferAttribute( array, itemSize ).setUsage( DynamicDrawUsage );\n\n}\n\nfunction Int8Attribute( array, itemSize ) {\n\n\tconsole.warn( 'THREE.Int8Attribute has been removed. Use new THREE.Int8BufferAttribute() instead.' );\n\treturn new Int8BufferAttribute( array, itemSize );\n\n}\n\nfunction Uint8Attribute( array, itemSize ) {\n\n\tconsole.warn( 'THREE.Uint8Attribute has been removed. Use new THREE.Uint8BufferAttribute() instead.' );\n\treturn new Uint8BufferAttribute( array, itemSize );\n\n}\n\nfunction Uint8ClampedAttribute( array, itemSize ) {\n\n\tconsole.warn( 'THREE.Uint8ClampedAttribute has been removed. Use new THREE.Uint8ClampedBufferAttribute() instead.' );\n\treturn new Uint8ClampedBufferAttribute( array, itemSize );\n\n}\n\nfunction Int16Attribute( array, itemSize ) {\n\n\tconsole.warn( 'THREE.Int16Attribute has been removed. Use new THREE.Int16BufferAttribute() instead.' );\n\treturn new Int16BufferAttribute( array, itemSize );\n\n}\n\nfunction Uint16Attribute( array, itemSize ) {\n\n\tconsole.warn( 'THREE.Uint16Attribute has been removed. Use new THREE.Uint16BufferAttribute() instead.' );\n\treturn new Uint16BufferAttribute( array, itemSize );\n\n}\n\nfunction Int32Attribute( array, itemSize ) {\n\n\tconsole.warn( 'THREE.Int32Attribute has been removed. Use new THREE.Int32BufferAttribute() instead.' );\n\treturn new Int32BufferAttribute( array, itemSize );\n\n}\n\nfunction Uint32Attribute( array, itemSize ) {\n\n\tconsole.warn( 'THREE.Uint32Attribute has been removed. Use new THREE.Uint32BufferAttribute() instead.' );\n\treturn new Uint32BufferAttribute( array, itemSize );\n\n}\n\nfunction Float32Attribute( array, itemSize ) {\n\n\tconsole.warn( 'THREE.Float32Attribute has been removed. Use new THREE.Float32BufferAttribute() instead.' );\n\treturn new Float32BufferAttribute( array, itemSize );\n\n}\n\nfunction Float64Attribute( array, itemSize ) {\n\n\tconsole.warn( 'THREE.Float64Attribute has been removed. Use new THREE.Float64BufferAttribute() instead.' );\n\treturn new Float64BufferAttribute( array, itemSize );\n\n}\n\n//\n\nCurve.create = function ( construct, getPoint ) {\n\n\tconsole.log( 'THREE.Curve.create() has been deprecated' );\n\n\tconstruct.prototype = Object.create( Curve.prototype );\n\tconstruct.prototype.constructor = construct;\n\tconstruct.prototype.getPoint = getPoint;\n\n\treturn construct;\n\n};\n\n//\n\nObject.assign( CurvePath.prototype, {\n\n\tcreatePointsGeometry: function ( divisions ) {\n\n\t\tconsole.warn( 'THREE.CurvePath: .createPointsGeometry() has been removed. Use new THREE.Geometry().setFromPoints( points ) instead.' );\n\n\t\t// generate geometry from path points (for Line or Points objects)\n\n\t\tconst pts = this.getPoints( divisions );\n\t\treturn this.createGeometry( pts );\n\n\t},\n\n\tcreateSpacedPointsGeometry: function ( divisions ) {\n\n\t\tconsole.warn( 'THREE.CurvePath: .createSpacedPointsGeometry() has been removed. Use new THREE.Geometry().setFromPoints( points ) instead.' );\n\n\t\t// generate geometry from equidistant sampling along the path\n\n\t\tconst pts = this.getSpacedPoints( divisions );\n\t\treturn this.createGeometry( pts );\n\n\t},\n\n\tcreateGeometry: function ( points ) {\n\n\t\tconsole.warn( 'THREE.CurvePath: .createGeometry() has been removed. Use new THREE.Geometry().setFromPoints( points ) instead.' );\n\n\t\tconst geometry = new Geometry();\n\n\t\tfor ( let i = 0, l = points.length; i < l; i ++ ) {\n\n\t\t\tconst point = points[ i ];\n\t\t\tgeometry.vertices.push( new Vector3( point.x, point.y, point.z || 0 ) );\n\n\t\t}\n\n\t\treturn geometry;\n\n\t}\n\n} );\n\n//\n\nObject.assign( Path.prototype, {\n\n\tfromPoints: function ( points ) {\n\n\t\tconsole.warn( 'THREE.Path: .fromPoints() has been renamed to .setFromPoints().' );\n\t\treturn this.setFromPoints( points );\n\n\t}\n\n} );\n\n//\n\nfunction ClosedSplineCurve3( points ) {\n\n\tconsole.warn( 'THREE.ClosedSplineCurve3 has been deprecated. Use THREE.CatmullRomCurve3 instead.' );\n\n\tCatmullRomCurve3.call( this, points );\n\tthis.type = 'catmullrom';\n\tthis.closed = true;\n\n}\n\nClosedSplineCurve3.prototype = Object.create( CatmullRomCurve3.prototype );\n\n//\n\nfunction SplineCurve3( points ) {\n\n\tconsole.warn( 'THREE.SplineCurve3 has been deprecated. Use THREE.CatmullRomCurve3 instead.' );\n\n\tCatmullRomCurve3.call( this, points );\n\tthis.type = 'catmullrom';\n\n}\n\nSplineCurve3.prototype = Object.create( CatmullRomCurve3.prototype );\n\n//\n\nfunction Spline( points ) {\n\n\tconsole.warn( 'THREE.Spline has been removed. Use THREE.CatmullRomCurve3 instead.' );\n\n\tCatmullRomCurve3.call( this, points );\n\tthis.type = 'catmullrom';\n\n}\n\nSpline.prototype = Object.create( CatmullRomCurve3.prototype );\n\nObject.assign( Spline.prototype, {\n\n\tinitFromArray: function ( /* a */ ) {\n\n\t\tconsole.error( 'THREE.Spline: .initFromArray() has been removed.' );\n\n\t},\n\tgetControlPointsArray: function ( /* optionalTarget */ ) {\n\n\t\tconsole.error( 'THREE.Spline: .getControlPointsArray() has been removed.' );\n\n\t},\n\treparametrizeByArcLength: function ( /* samplingCoef */ ) {\n\n\t\tconsole.error( 'THREE.Spline: .reparametrizeByArcLength() has been removed.' );\n\n\t}\n\n} );\n\n//\n\nfunction AxisHelper( size ) {\n\n\tconsole.warn( 'THREE.AxisHelper has been renamed to THREE.AxesHelper.' );\n\treturn new AxesHelper( size );\n\n}\n\nfunction BoundingBoxHelper( object, color ) {\n\n\tconsole.warn( 'THREE.BoundingBoxHelper has been deprecated. Creating a THREE.BoxHelper instead.' );\n\treturn new BoxHelper( object, color );\n\n}\n\nfunction EdgesHelper( object, hex ) {\n\n\tconsole.warn( 'THREE.EdgesHelper has been removed. Use THREE.EdgesGeometry instead.' );\n\treturn new LineSegments( new EdgesGeometry( object.geometry ), new LineBasicMaterial( { color: hex !== undefined ? hex : 0xffffff } ) );\n\n}\n\nGridHelper.prototype.setColors = function () {\n\n\tconsole.error( 'THREE.GridHelper: setColors() has been deprecated, pass them in the constructor instead.' );\n\n};\n\nSkeletonHelper.prototype.update = function () {\n\n\tconsole.error( 'THREE.SkeletonHelper: update() no longer needs to be called.' );\n\n};\n\nfunction WireframeHelper( object, hex ) {\n\n\tconsole.warn( 'THREE.WireframeHelper has been removed. Use THREE.WireframeGeometry instead.' );\n\treturn new LineSegments( new WireframeGeometry( object.geometry ), new LineBasicMaterial( { color: hex !== undefined ? hex : 0xffffff } ) );\n\n}\n\n//\n\nObject.assign( Loader.prototype, {\n\n\textractUrlBase: function ( url ) {\n\n\t\tconsole.warn( 'THREE.Loader: .extractUrlBase() has been deprecated. Use THREE.LoaderUtils.extractUrlBase() instead.' );\n\t\treturn LoaderUtils.extractUrlBase( url );\n\n\t}\n\n} );\n\nLoader.Handlers = {\n\n\tadd: function ( /* regex, loader */ ) {\n\n\t\tconsole.error( 'THREE.Loader: Handlers.add() has been removed. Use LoadingManager.addHandler() instead.' );\n\n\t},\n\n\tget: function ( /* file */ ) {\n\n\t\tconsole.error( 'THREE.Loader: Handlers.get() has been removed. Use LoadingManager.getHandler() instead.' );\n\n\t}\n\n};\n\nfunction XHRLoader( manager ) {\n\n\tconsole.warn( 'THREE.XHRLoader has been renamed to THREE.FileLoader.' );\n\treturn new FileLoader( manager );\n\n}\n\nfunction BinaryTextureLoader( manager ) {\n\n\tconsole.warn( 'THREE.BinaryTextureLoader has been renamed to THREE.DataTextureLoader.' );\n\treturn new DataTextureLoader( manager );\n\n}\n\n//\n\nObject.assign( Box2.prototype, {\n\n\tcenter: function ( optionalTarget ) {\n\n\t\tconsole.warn( 'THREE.Box2: .center() has been renamed to .getCenter().' );\n\t\treturn this.getCenter( optionalTarget );\n\n\t},\n\tempty: function () {\n\n\t\tconsole.warn( 'THREE.Box2: .empty() has been renamed to .isEmpty().' );\n\t\treturn this.isEmpty();\n\n\t},\n\tisIntersectionBox: function ( box ) {\n\n\t\tconsole.warn( 'THREE.Box2: .isIntersectionBox() has been renamed to .intersectsBox().' );\n\t\treturn this.intersectsBox( box );\n\n\t},\n\tsize: function ( optionalTarget ) {\n\n\t\tconsole.warn( 'THREE.Box2: .size() has been renamed to .getSize().' );\n\t\treturn this.getSize( optionalTarget );\n\n\t}\n} );\n\nObject.assign( Box3.prototype, {\n\n\tcenter: function ( optionalTarget ) {\n\n\t\tconsole.warn( 'THREE.Box3: .center() has been renamed to .getCenter().' );\n\t\treturn this.getCenter( optionalTarget );\n\n\t},\n\tempty: function () {\n\n\t\tconsole.warn( 'THREE.Box3: .empty() has been renamed to .isEmpty().' );\n\t\treturn this.isEmpty();\n\n\t},\n\tisIntersectionBox: function ( box ) {\n\n\t\tconsole.warn( 'THREE.Box3: .isIntersectionBox() has been renamed to .intersectsBox().' );\n\t\treturn this.intersectsBox( box );\n\n\t},\n\tisIntersectionSphere: function ( sphere ) {\n\n\t\tconsole.warn( 'THREE.Box3: .isIntersectionSphere() has been renamed to .intersectsSphere().' );\n\t\treturn this.intersectsSphere( sphere );\n\n\t},\n\tsize: function ( optionalTarget ) {\n\n\t\tconsole.warn( 'THREE.Box3: .size() has been renamed to .getSize().' );\n\t\treturn this.getSize( optionalTarget );\n\n\t}\n} );\n\nObject.assign( Sphere.prototype, {\n\n\tempty: function () {\n\n\t\tconsole.warn( 'THREE.Sphere: .empty() has been renamed to .isEmpty().' );\n\t\treturn this.isEmpty();\n\n\t},\n\n} );\n\nFrustum.prototype.setFromMatrix = function ( m ) {\n\n\tconsole.warn( 'THREE.Frustum: .setFromMatrix() has been renamed to .setFromProjectionMatrix().' );\n\treturn this.setFromProjectionMatrix( m );\n\n};\n\nLine3.prototype.center = function ( optionalTarget ) {\n\n\tconsole.warn( 'THREE.Line3: .center() has been renamed to .getCenter().' );\n\treturn this.getCenter( optionalTarget );\n\n};\n\nObject.assign( MathUtils, {\n\n\trandom16: function () {\n\n\t\tconsole.warn( 'THREE.Math: .random16() has been deprecated. Use Math.random() instead.' );\n\t\treturn Math.random();\n\n\t},\n\n\tnearestPowerOfTwo: function ( value ) {\n\n\t\tconsole.warn( 'THREE.Math: .nearestPowerOfTwo() has been renamed to .floorPowerOfTwo().' );\n\t\treturn MathUtils.floorPowerOfTwo( value );\n\n\t},\n\n\tnextPowerOfTwo: function ( value ) {\n\n\t\tconsole.warn( 'THREE.Math: .nextPowerOfTwo() has been renamed to .ceilPowerOfTwo().' );\n\t\treturn MathUtils.ceilPowerOfTwo( value );\n\n\t}\n\n} );\n\nObject.assign( Matrix3.prototype, {\n\n\tflattenToArrayOffset: function ( array, offset ) {\n\n\t\tconsole.warn( 'THREE.Matrix3: .flattenToArrayOffset() has been deprecated. Use .toArray() instead.' );\n\t\treturn this.toArray( array, offset );\n\n\t},\n\tmultiplyVector3: function ( vector ) {\n\n\t\tconsole.warn( 'THREE.Matrix3: .multiplyVector3() has been removed. Use vector.applyMatrix3( matrix ) instead.' );\n\t\treturn vector.applyMatrix3( this );\n\n\t},\n\tmultiplyVector3Array: function ( /* a */ ) {\n\n\t\tconsole.error( 'THREE.Matrix3: .multiplyVector3Array() has been removed.' );\n\n\t},\n\tapplyToBufferAttribute: function ( attribute ) {\n\n\t\tconsole.warn( 'THREE.Matrix3: .applyToBufferAttribute() has been removed. Use attribute.applyMatrix3( matrix ) instead.' );\n\t\treturn attribute.applyMatrix3( this );\n\n\t},\n\tapplyToVector3Array: function ( /* array, offset, length */ ) {\n\n\t\tconsole.error( 'THREE.Matrix3: .applyToVector3Array() has been removed.' );\n\n\t},\n\tgetInverse: function ( matrix ) {\n\n\t\tconsole.warn( 'THREE.Matrix3: .getInverse() has been removed. Use matrixInv.copy( matrix ).invert(); instead.' );\n\t\treturn this.copy( matrix ).invert();\n\n\t}\n\n} );\n\nObject.assign( Matrix4.prototype, {\n\n\textractPosition: function ( m ) {\n\n\t\tconsole.warn( 'THREE.Matrix4: .extractPosition() has been renamed to .copyPosition().' );\n\t\treturn this.copyPosition( m );\n\n\t},\n\tflattenToArrayOffset: function ( array, offset ) {\n\n\t\tconsole.warn( 'THREE.Matrix4: .flattenToArrayOffset() has been deprecated. Use .toArray() instead.' );\n\t\treturn this.toArray( array, offset );\n\n\t},\n\tgetPosition: function () {\n\n\t\tconsole.warn( 'THREE.Matrix4: .getPosition() has been removed. Use Vector3.setFromMatrixPosition( matrix ) instead.' );\n\t\treturn new Vector3().setFromMatrixColumn( this, 3 );\n\n\t},\n\tsetRotationFromQuaternion: function ( q ) {\n\n\t\tconsole.warn( 'THREE.Matrix4: .setRotationFromQuaternion() has been renamed to .makeRotationFromQuaternion().' );\n\t\treturn this.makeRotationFromQuaternion( q );\n\n\t},\n\tmultiplyToArray: function () {\n\n\t\tconsole.warn( 'THREE.Matrix4: .multiplyToArray() has been removed.' );\n\n\t},\n\tmultiplyVector3: function ( vector ) {\n\n\t\tconsole.warn( 'THREE.Matrix4: .multiplyVector3() has been removed. Use vector.applyMatrix4( matrix ) instead.' );\n\t\treturn vector.applyMatrix4( this );\n\n\t},\n\tmultiplyVector4: function ( vector ) {\n\n\t\tconsole.warn( 'THREE.Matrix4: .multiplyVector4() has been removed. Use vector.applyMatrix4( matrix ) instead.' );\n\t\treturn vector.applyMatrix4( this );\n\n\t},\n\tmultiplyVector3Array: function ( /* a */ ) {\n\n\t\tconsole.error( 'THREE.Matrix4: .multiplyVector3Array() has been removed.' );\n\n\t},\n\trotateAxis: function ( v ) {\n\n\t\tconsole.warn( 'THREE.Matrix4: .rotateAxis() has been removed. Use Vector3.transformDirection( matrix ) instead.' );\n\t\tv.transformDirection( this );\n\n\t},\n\tcrossVector: function ( vector ) {\n\n\t\tconsole.warn( 'THREE.Matrix4: .crossVector() has been removed. Use vector.applyMatrix4( matrix ) instead.' );\n\t\treturn vector.applyMatrix4( this );\n\n\t},\n\ttranslate: function () {\n\n\t\tconsole.error( 'THREE.Matrix4: .translate() has been removed.' );\n\n\t},\n\trotateX: function () {\n\n\t\tconsole.error( 'THREE.Matrix4: .rotateX() has been removed.' );\n\n\t},\n\trotateY: function () {\n\n\t\tconsole.error( 'THREE.Matrix4: .rotateY() has been removed.' );\n\n\t},\n\trotateZ: function () {\n\n\t\tconsole.error( 'THREE.Matrix4: .rotateZ() has been removed.' );\n\n\t},\n\trotateByAxis: function () {\n\n\t\tconsole.error( 'THREE.Matrix4: .rotateByAxis() has been removed.' );\n\n\t},\n\tapplyToBufferAttribute: function ( attribute ) {\n\n\t\tconsole.warn( 'THREE.Matrix4: .applyToBufferAttribute() has been removed. Use attribute.applyMatrix4( matrix ) instead.' );\n\t\treturn attribute.applyMatrix4( this );\n\n\t},\n\tapplyToVector3Array: function ( /* array, offset, length */ ) {\n\n\t\tconsole.error( 'THREE.Matrix4: .applyToVector3Array() has been removed.' );\n\n\t},\n\tmakeFrustum: function ( left, right, bottom, top, near, far ) {\n\n\t\tconsole.warn( 'THREE.Matrix4: .makeFrustum() has been removed. Use .makePerspective( left, right, top, bottom, near, far ) instead.' );\n\t\treturn this.makePerspective( left, right, top, bottom, near, far );\n\n\t},\n\tgetInverse: function ( matrix ) {\n\n\t\tconsole.warn( 'THREE.Matrix4: .getInverse() has been removed. Use matrixInv.copy( matrix ).invert(); instead.' );\n\t\treturn this.copy( matrix ).invert();\n\n\t}\n\n} );\n\nPlane.prototype.isIntersectionLine = function ( line ) {\n\n\tconsole.warn( 'THREE.Plane: .isIntersectionLine() has been renamed to .intersectsLine().' );\n\treturn this.intersectsLine( line );\n\n};\n\nObject.assign( Quaternion.prototype, {\n\n\tmultiplyVector3: function ( vector ) {\n\n\t\tconsole.warn( 'THREE.Quaternion: .multiplyVector3() has been removed. Use is now vector.applyQuaternion( quaternion ) instead.' );\n\t\treturn vector.applyQuaternion( this );\n\n\t},\n\tinverse: function ( ) {\n\n\t\tconsole.warn( 'THREE.Quaternion: .inverse() has been renamed to invert().' );\n\t\treturn this.invert();\n\n\t}\n\n} );\n\nObject.assign( Ray.prototype, {\n\n\tisIntersectionBox: function ( box ) {\n\n\t\tconsole.warn( 'THREE.Ray: .isIntersectionBox() has been renamed to .intersectsBox().' );\n\t\treturn this.intersectsBox( box );\n\n\t},\n\tisIntersectionPlane: function ( plane ) {\n\n\t\tconsole.warn( 'THREE.Ray: .isIntersectionPlane() has been renamed to .intersectsPlane().' );\n\t\treturn this.intersectsPlane( plane );\n\n\t},\n\tisIntersectionSphere: function ( sphere ) {\n\n\t\tconsole.warn( 'THREE.Ray: .isIntersectionSphere() has been renamed to .intersectsSphere().' );\n\t\treturn this.intersectsSphere( sphere );\n\n\t}\n\n} );\n\nObject.assign( Triangle.prototype, {\n\n\tarea: function () {\n\n\t\tconsole.warn( 'THREE.Triangle: .area() has been renamed to .getArea().' );\n\t\treturn this.getArea();\n\n\t},\n\tbarycoordFromPoint: function ( point, target ) {\n\n\t\tconsole.warn( 'THREE.Triangle: .barycoordFromPoint() has been renamed to .getBarycoord().' );\n\t\treturn this.getBarycoord( point, target );\n\n\t},\n\tmidpoint: function ( target ) {\n\n\t\tconsole.warn( 'THREE.Triangle: .midpoint() has been renamed to .getMidpoint().' );\n\t\treturn this.getMidpoint( target );\n\n\t},\n\tnormal: function ( target ) {\n\n\t\tconsole.warn( 'THREE.Triangle: .normal() has been renamed to .getNormal().' );\n\t\treturn this.getNormal( target );\n\n\t},\n\tplane: function ( target ) {\n\n\t\tconsole.warn( 'THREE.Triangle: .plane() has been renamed to .getPlane().' );\n\t\treturn this.getPlane( target );\n\n\t}\n\n} );\n\nObject.assign( Triangle, {\n\n\tbarycoordFromPoint: function ( point, a, b, c, target ) {\n\n\t\tconsole.warn( 'THREE.Triangle: .barycoordFromPoint() has been renamed to .getBarycoord().' );\n\t\treturn Triangle.getBarycoord( point, a, b, c, target );\n\n\t},\n\tnormal: function ( a, b, c, target ) {\n\n\t\tconsole.warn( 'THREE.Triangle: .normal() has been renamed to .getNormal().' );\n\t\treturn Triangle.getNormal( a, b, c, target );\n\n\t}\n\n} );\n\nObject.assign( Shape.prototype, {\n\n\textractAllPoints: function ( divisions ) {\n\n\t\tconsole.warn( 'THREE.Shape: .extractAllPoints() has been removed. Use .extractPoints() instead.' );\n\t\treturn this.extractPoints( divisions );\n\n\t},\n\textrude: function ( options ) {\n\n\t\tconsole.warn( 'THREE.Shape: .extrude() has been removed. Use ExtrudeGeometry() instead.' );\n\t\treturn new ExtrudeGeometry( this, options );\n\n\t},\n\tmakeGeometry: function ( options ) {\n\n\t\tconsole.warn( 'THREE.Shape: .makeGeometry() has been removed. Use ShapeGeometry() instead.' );\n\t\treturn new ShapeGeometry( this, options );\n\n\t}\n\n} );\n\nObject.assign( Vector2.prototype, {\n\n\tfromAttribute: function ( attribute, index, offset ) {\n\n\t\tconsole.warn( 'THREE.Vector2: .fromAttribute() has been renamed to .fromBufferAttribute().' );\n\t\treturn this.fromBufferAttribute( attribute, index, offset );\n\n\t},\n\tdistanceToManhattan: function ( v ) {\n\n\t\tconsole.warn( 'THREE.Vector2: .distanceToManhattan() has been renamed to .manhattanDistanceTo().' );\n\t\treturn this.manhattanDistanceTo( v );\n\n\t},\n\tlengthManhattan: function () {\n\n\t\tconsole.warn( 'THREE.Vector2: .lengthManhattan() has been renamed to .manhattanLength().' );\n\t\treturn this.manhattanLength();\n\n\t}\n\n} );\n\nObject.assign( Vector3.prototype, {\n\n\tsetEulerFromRotationMatrix: function () {\n\n\t\tconsole.error( 'THREE.Vector3: .setEulerFromRotationMatrix() has been removed. Use Euler.setFromRotationMatrix() instead.' );\n\n\t},\n\tsetEulerFromQuaternion: function () {\n\n\t\tconsole.error( 'THREE.Vector3: .setEulerFromQuaternion() has been removed. Use Euler.setFromQuaternion() instead.' );\n\n\t},\n\tgetPositionFromMatrix: function ( m ) {\n\n\t\tconsole.warn( 'THREE.Vector3: .getPositionFromMatrix() has been renamed to .setFromMatrixPosition().' );\n\t\treturn this.setFromMatrixPosition( m );\n\n\t},\n\tgetScaleFromMatrix: function ( m ) {\n\n\t\tconsole.warn( 'THREE.Vector3: .getScaleFromMatrix() has been renamed to .setFromMatrixScale().' );\n\t\treturn this.setFromMatrixScale( m );\n\n\t},\n\tgetColumnFromMatrix: function ( index, matrix ) {\n\n\t\tconsole.warn( 'THREE.Vector3: .getColumnFromMatrix() has been renamed to .setFromMatrixColumn().' );\n\t\treturn this.setFromMatrixColumn( matrix, index );\n\n\t},\n\tapplyProjection: function ( m ) {\n\n\t\tconsole.warn( 'THREE.Vector3: .applyProjection() has been removed. Use .applyMatrix4( m ) instead.' );\n\t\treturn this.applyMatrix4( m );\n\n\t},\n\tfromAttribute: function ( attribute, index, offset ) {\n\n\t\tconsole.warn( 'THREE.Vector3: .fromAttribute() has been renamed to .fromBufferAttribute().' );\n\t\treturn this.fromBufferAttribute( attribute, index, offset );\n\n\t},\n\tdistanceToManhattan: function ( v ) {\n\n\t\tconsole.warn( 'THREE.Vector3: .distanceToManhattan() has been renamed to .manhattanDistanceTo().' );\n\t\treturn this.manhattanDistanceTo( v );\n\n\t},\n\tlengthManhattan: function () {\n\n\t\tconsole.warn( 'THREE.Vector3: .lengthManhattan() has been renamed to .manhattanLength().' );\n\t\treturn this.manhattanLength();\n\n\t}\n\n} );\n\nObject.assign( Vector4.prototype, {\n\n\tfromAttribute: function ( attribute, index, offset ) {\n\n\t\tconsole.warn( 'THREE.Vector4: .fromAttribute() has been renamed to .fromBufferAttribute().' );\n\t\treturn this.fromBufferAttribute( attribute, index, offset );\n\n\t},\n\tlengthManhattan: function () {\n\n\t\tconsole.warn( 'THREE.Vector4: .lengthManhattan() has been renamed to .manhattanLength().' );\n\t\treturn this.manhattanLength();\n\n\t}\n\n} );\n\n//\n\nObject.assign( Geometry.prototype, {\n\n\tcomputeTangents: function () {\n\n\t\tconsole.error( 'THREE.Geometry: .computeTangents() has been removed.' );\n\n\t},\n\tcomputeLineDistances: function () {\n\n\t\tconsole.error( 'THREE.Geometry: .computeLineDistances() has been removed. Use THREE.Line.computeLineDistances() instead.' );\n\n\t},\n\tapplyMatrix: function ( matrix ) {\n\n\t\tconsole.warn( 'THREE.Geometry: .applyMatrix() has been renamed to .applyMatrix4().' );\n\t\treturn this.applyMatrix4( matrix );\n\n\t}\n\n} );\n\nObject.assign( Object3D.prototype, {\n\n\tgetChildByName: function ( name ) {\n\n\t\tconsole.warn( 'THREE.Object3D: .getChildByName() has been renamed to .getObjectByName().' );\n\t\treturn this.getObjectByName( name );\n\n\t},\n\trenderDepth: function () {\n\n\t\tconsole.warn( 'THREE.Object3D: .renderDepth has been removed. Use .renderOrder, instead.' );\n\n\t},\n\ttranslate: function ( distance, axis ) {\n\n\t\tconsole.warn( 'THREE.Object3D: .translate() has been removed. Use .translateOnAxis( axis, distance ) instead.' );\n\t\treturn this.translateOnAxis( axis, distance );\n\n\t},\n\tgetWorldRotation: function () {\n\n\t\tconsole.error( 'THREE.Object3D: .getWorldRotation() has been removed. Use THREE.Object3D.getWorldQuaternion( target ) instead.' );\n\n\t},\n\tapplyMatrix: function ( matrix ) {\n\n\t\tconsole.warn( 'THREE.Object3D: .applyMatrix() has been renamed to .applyMatrix4().' );\n\t\treturn this.applyMatrix4( matrix );\n\n\t}\n\n} );\n\nObject.defineProperties( Object3D.prototype, {\n\n\teulerOrder: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.Object3D: .eulerOrder is now .rotation.order.' );\n\t\t\treturn this.rotation.order;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.Object3D: .eulerOrder is now .rotation.order.' );\n\t\t\tthis.rotation.order = value;\n\n\t\t}\n\t},\n\tuseQuaternion: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.Object3D: .useQuaternion has been removed. The library now uses quaternions by default.' );\n\n\t\t},\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.Object3D: .useQuaternion has been removed. The library now uses quaternions by default.' );\n\n\t\t}\n\t}\n\n} );\n\nObject.assign( Mesh.prototype, {\n\n\tsetDrawMode: function () {\n\n\t\tconsole.error( 'THREE.Mesh: .setDrawMode() has been removed. The renderer now always assumes THREE.TrianglesDrawMode. Transform your geometry via BufferGeometryUtils.toTrianglesDrawMode() if necessary.' );\n\n\t},\n\n} );\n\nObject.defineProperties( Mesh.prototype, {\n\n\tdrawMode: {\n\t\tget: function () {\n\n\t\t\tconsole.error( 'THREE.Mesh: .drawMode has been removed. The renderer now always assumes THREE.TrianglesDrawMode.' );\n\t\t\treturn TrianglesDrawMode;\n\n\t\t},\n\t\tset: function () {\n\n\t\t\tconsole.error( 'THREE.Mesh: .drawMode has been removed. The renderer now always assumes THREE.TrianglesDrawMode. Transform your geometry via BufferGeometryUtils.toTrianglesDrawMode() if necessary.' );\n\n\t\t}\n\t}\n\n} );\n\nObject.defineProperties( LOD.prototype, {\n\n\tobjects: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.LOD: .objects has been renamed to .levels.' );\n\t\t\treturn this.levels;\n\n\t\t}\n\t}\n\n} );\n\nObject.defineProperty( Skeleton.prototype, 'useVertexTexture', {\n\n\tget: function () {\n\n\t\tconsole.warn( 'THREE.Skeleton: useVertexTexture has been removed.' );\n\n\t},\n\tset: function () {\n\n\t\tconsole.warn( 'THREE.Skeleton: useVertexTexture has been removed.' );\n\n\t}\n\n} );\n\nSkinnedMesh.prototype.initBones = function () {\n\n\tconsole.error( 'THREE.SkinnedMesh: initBones() has been removed.' );\n\n};\n\nObject.defineProperty( Curve.prototype, '__arcLengthDivisions', {\n\n\tget: function () {\n\n\t\tconsole.warn( 'THREE.Curve: .__arcLengthDivisions is now .arcLengthDivisions.' );\n\t\treturn this.arcLengthDivisions;\n\n\t},\n\tset: function ( value ) {\n\n\t\tconsole.warn( 'THREE.Curve: .__arcLengthDivisions is now .arcLengthDivisions.' );\n\t\tthis.arcLengthDivisions = value;\n\n\t}\n\n} );\n\n//\n\nPerspectiveCamera.prototype.setLens = function ( focalLength, filmGauge ) {\n\n\tconsole.warn( 'THREE.PerspectiveCamera.setLens is deprecated. ' +\n\t\t\t'Use .setFocalLength and .filmGauge for a photographic setup.' );\n\n\tif ( filmGauge !== undefined ) this.filmGauge = filmGauge;\n\tthis.setFocalLength( focalLength );\n\n};\n\n//\n\nObject.defineProperties( Light.prototype, {\n\tonlyShadow: {\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.Light: .onlyShadow has been removed.' );\n\n\t\t}\n\t},\n\tshadowCameraFov: {\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.Light: .shadowCameraFov is now .shadow.camera.fov.' );\n\t\t\tthis.shadow.camera.fov = value;\n\n\t\t}\n\t},\n\tshadowCameraLeft: {\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.Light: .shadowCameraLeft is now .shadow.camera.left.' );\n\t\t\tthis.shadow.camera.left = value;\n\n\t\t}\n\t},\n\tshadowCameraRight: {\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.Light: .shadowCameraRight is now .shadow.camera.right.' );\n\t\t\tthis.shadow.camera.right = value;\n\n\t\t}\n\t},\n\tshadowCameraTop: {\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.Light: .shadowCameraTop is now .shadow.camera.top.' );\n\t\t\tthis.shadow.camera.top = value;\n\n\t\t}\n\t},\n\tshadowCameraBottom: {\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.Light: .shadowCameraBottom is now .shadow.camera.bottom.' );\n\t\t\tthis.shadow.camera.bottom = value;\n\n\t\t}\n\t},\n\tshadowCameraNear: {\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.Light: .shadowCameraNear is now .shadow.camera.near.' );\n\t\t\tthis.shadow.camera.near = value;\n\n\t\t}\n\t},\n\tshadowCameraFar: {\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.Light: .shadowCameraFar is now .shadow.camera.far.' );\n\t\t\tthis.shadow.camera.far = value;\n\n\t\t}\n\t},\n\tshadowCameraVisible: {\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.Light: .shadowCameraVisible has been removed. Use new THREE.CameraHelper( light.shadow.camera ) instead.' );\n\n\t\t}\n\t},\n\tshadowBias: {\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.Light: .shadowBias is now .shadow.bias.' );\n\t\t\tthis.shadow.bias = value;\n\n\t\t}\n\t},\n\tshadowDarkness: {\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.Light: .shadowDarkness has been removed.' );\n\n\t\t}\n\t},\n\tshadowMapWidth: {\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.Light: .shadowMapWidth is now .shadow.mapSize.width.' );\n\t\t\tthis.shadow.mapSize.width = value;\n\n\t\t}\n\t},\n\tshadowMapHeight: {\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.Light: .shadowMapHeight is now .shadow.mapSize.height.' );\n\t\t\tthis.shadow.mapSize.height = value;\n\n\t\t}\n\t}\n} );\n\n//\n\nObject.defineProperties( BufferAttribute.prototype, {\n\n\tlength: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.BufferAttribute: .length has been deprecated. Use .count instead.' );\n\t\t\treturn this.array.length;\n\n\t\t}\n\t},\n\tdynamic: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.BufferAttribute: .dynamic has been deprecated. Use .usage instead.' );\n\t\t\treturn this.usage === DynamicDrawUsage;\n\n\t\t},\n\t\tset: function ( /* value */ ) {\n\n\t\t\tconsole.warn( 'THREE.BufferAttribute: .dynamic has been deprecated. Use .usage instead.' );\n\t\t\tthis.setUsage( DynamicDrawUsage );\n\n\t\t}\n\t}\n\n} );\n\nObject.assign( BufferAttribute.prototype, {\n\tsetDynamic: function ( value ) {\n\n\t\tconsole.warn( 'THREE.BufferAttribute: .setDynamic() has been deprecated. Use .setUsage() instead.' );\n\t\tthis.setUsage( value === true ? DynamicDrawUsage : StaticDrawUsage );\n\t\treturn this;\n\n\t},\n\tcopyIndicesArray: function ( /* indices */ ) {\n\n\t\tconsole.error( 'THREE.BufferAttribute: .copyIndicesArray() has been removed.' );\n\n\t},\n\tsetArray: function ( /* array */ ) {\n\n\t\tconsole.error( 'THREE.BufferAttribute: .setArray has been removed. Use BufferGeometry .setAttribute to replace/resize attribute buffers' );\n\n\t}\n} );\n\nObject.assign( BufferGeometry.prototype, {\n\n\taddIndex: function ( index ) {\n\n\t\tconsole.warn( 'THREE.BufferGeometry: .addIndex() has been renamed to .setIndex().' );\n\t\tthis.setIndex( index );\n\n\t},\n\taddAttribute: function ( name, attribute ) {\n\n\t\tconsole.warn( 'THREE.BufferGeometry: .addAttribute() has been renamed to .setAttribute().' );\n\n\t\tif ( ! ( attribute && attribute.isBufferAttribute ) && ! ( attribute && attribute.isInterleavedBufferAttribute ) ) {\n\n\t\t\tconsole.warn( 'THREE.BufferGeometry: .addAttribute() now expects ( name, attribute ).' );\n\n\t\t\treturn this.setAttribute( name, new BufferAttribute( arguments[ 1 ], arguments[ 2 ] ) );\n\n\t\t}\n\n\t\tif ( name === 'index' ) {\n\n\t\t\tconsole.warn( 'THREE.BufferGeometry.addAttribute: Use .setIndex() for index attribute.' );\n\t\t\tthis.setIndex( attribute );\n\n\t\t\treturn this;\n\n\t\t}\n\n\t\treturn this.setAttribute( name, attribute );\n\n\t},\n\taddDrawCall: function ( start, count, indexOffset ) {\n\n\t\tif ( indexOffset !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.BufferGeometry: .addDrawCall() no longer supports indexOffset.' );\n\n\t\t}\n\n\t\tconsole.warn( 'THREE.BufferGeometry: .addDrawCall() is now .addGroup().' );\n\t\tthis.addGroup( start, count );\n\n\t},\n\tclearDrawCalls: function () {\n\n\t\tconsole.warn( 'THREE.BufferGeometry: .clearDrawCalls() is now .clearGroups().' );\n\t\tthis.clearGroups();\n\n\t},\n\tcomputeTangents: function () {\n\n\t\tconsole.warn( 'THREE.BufferGeometry: .computeTangents() has been removed.' );\n\n\t},\n\tcomputeOffsets: function () {\n\n\t\tconsole.warn( 'THREE.BufferGeometry: .computeOffsets() has been removed.' );\n\n\t},\n\tremoveAttribute: function ( name ) {\n\n\t\tconsole.warn( 'THREE.BufferGeometry: .removeAttribute() has been renamed to .deleteAttribute().' );\n\n\t\treturn this.deleteAttribute( name );\n\n\t},\n\tapplyMatrix: function ( matrix ) {\n\n\t\tconsole.warn( 'THREE.BufferGeometry: .applyMatrix() has been renamed to .applyMatrix4().' );\n\t\treturn this.applyMatrix4( matrix );\n\n\t}\n\n} );\n\nObject.defineProperties( BufferGeometry.prototype, {\n\n\tdrawcalls: {\n\t\tget: function () {\n\n\t\t\tconsole.error( 'THREE.BufferGeometry: .drawcalls has been renamed to .groups.' );\n\t\t\treturn this.groups;\n\n\t\t}\n\t},\n\toffsets: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.BufferGeometry: .offsets has been renamed to .groups.' );\n\t\t\treturn this.groups;\n\n\t\t}\n\t}\n\n} );\n\nObject.defineProperties( InstancedBufferGeometry.prototype, {\n\n\tmaxInstancedCount: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.InstancedBufferGeometry: .maxInstancedCount has been renamed to .instanceCount.' );\n\t\t\treturn this.instanceCount;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.InstancedBufferGeometry: .maxInstancedCount has been renamed to .instanceCount.' );\n\t\t\tthis.instanceCount = value;\n\n\t\t}\n\t}\n\n} );\n\nObject.defineProperties( Raycaster.prototype, {\n\n\tlinePrecision: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.Raycaster: .linePrecision has been deprecated. Use .params.Line.threshold instead.' );\n\t\t\treturn this.params.Line.threshold;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.Raycaster: .linePrecision has been deprecated. Use .params.Line.threshold instead.' );\n\t\t\tthis.params.Line.threshold = value;\n\n\t\t}\n\t}\n\n} );\n\nObject.defineProperties( InterleavedBuffer.prototype, {\n\n\tdynamic: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.InterleavedBuffer: .length has been deprecated. Use .usage instead.' );\n\t\t\treturn this.usage === DynamicDrawUsage;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.InterleavedBuffer: .length has been deprecated. Use .usage instead.' );\n\t\t\tthis.setUsage( value );\n\n\t\t}\n\t}\n\n} );\n\nObject.assign( InterleavedBuffer.prototype, {\n\tsetDynamic: function ( value ) {\n\n\t\tconsole.warn( 'THREE.InterleavedBuffer: .setDynamic() has been deprecated. Use .setUsage() instead.' );\n\t\tthis.setUsage( value === true ? DynamicDrawUsage : StaticDrawUsage );\n\t\treturn this;\n\n\t},\n\tsetArray: function ( /* array */ ) {\n\n\t\tconsole.error( 'THREE.InterleavedBuffer: .setArray has been removed. Use BufferGeometry .setAttribute to replace/resize attribute buffers' );\n\n\t}\n} );\n\n//\n\nObject.assign( ExtrudeBufferGeometry.prototype, {\n\n\tgetArrays: function () {\n\n\t\tconsole.error( 'THREE.ExtrudeBufferGeometry: .getArrays() has been removed.' );\n\n\t},\n\n\taddShapeList: function () {\n\n\t\tconsole.error( 'THREE.ExtrudeBufferGeometry: .addShapeList() has been removed.' );\n\n\t},\n\n\taddShape: function () {\n\n\t\tconsole.error( 'THREE.ExtrudeBufferGeometry: .addShape() has been removed.' );\n\n\t}\n\n} );\n\n//\n\nObject.assign( Scene.prototype, {\n\n\tdispose: function () {\n\n\t\tconsole.error( 'THREE.Scene: .dispose() has been removed.' );\n\n\t}\n\n} );\n\n//\n\nObject.defineProperties( Uniform.prototype, {\n\n\tdynamic: {\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.Uniform: .dynamic has been removed. Use object.onBeforeRender() instead.' );\n\n\t\t}\n\t},\n\tonUpdate: {\n\t\tvalue: function () {\n\n\t\t\tconsole.warn( 'THREE.Uniform: .onUpdate() has been removed. Use object.onBeforeRender() instead.' );\n\t\t\treturn this;\n\n\t\t}\n\t}\n\n} );\n\n//\n\nObject.defineProperties( Material.prototype, {\n\n\twrapAround: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.Material: .wrapAround has been removed.' );\n\n\t\t},\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.Material: .wrapAround has been removed.' );\n\n\t\t}\n\t},\n\n\toverdraw: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.Material: .overdraw has been removed.' );\n\n\t\t},\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.Material: .overdraw has been removed.' );\n\n\t\t}\n\t},\n\n\twrapRGB: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.Material: .wrapRGB has been removed.' );\n\t\t\treturn new Color();\n\n\t\t}\n\t},\n\n\tshading: {\n\t\tget: function () {\n\n\t\t\tconsole.error( 'THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.' );\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.' );\n\t\t\tthis.flatShading = ( value === FlatShading );\n\n\t\t}\n\t},\n\n\tstencilMask: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.' + this.type + ': .stencilMask has been removed. Use .stencilFuncMask instead.' );\n\t\t\treturn this.stencilFuncMask;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.' + this.type + ': .stencilMask has been removed. Use .stencilFuncMask instead.' );\n\t\t\tthis.stencilFuncMask = value;\n\n\t\t}\n\t}\n\n} );\n\nObject.defineProperties( MeshPhongMaterial.prototype, {\n\n\tmetal: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.MeshPhongMaterial: .metal has been removed. Use THREE.MeshStandardMaterial instead.' );\n\t\t\treturn false;\n\n\t\t},\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.MeshPhongMaterial: .metal has been removed. Use THREE.MeshStandardMaterial instead' );\n\n\t\t}\n\t}\n\n} );\n\nObject.defineProperties( MeshPhysicalMaterial.prototype, {\n\n\ttransparency: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.MeshPhysicalMaterial: .transparency has been renamed to .transmission.' );\n\t\t\treturn this.transmission;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.MeshPhysicalMaterial: .transparency has been renamed to .transmission.' );\n\t\t\tthis.transmission = value;\n\n\t\t}\n\t}\n\n} );\n\nObject.defineProperties( ShaderMaterial.prototype, {\n\n\tderivatives: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.ShaderMaterial: .derivatives has been moved to .extensions.derivatives.' );\n\t\t\treturn this.extensions.derivatives;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE. ShaderMaterial: .derivatives has been moved to .extensions.derivatives.' );\n\t\t\tthis.extensions.derivatives = value;\n\n\t\t}\n\t}\n\n} );\n\n//\n\nObject.assign( WebGLRenderer.prototype, {\n\n\tclearTarget: function ( renderTarget, color, depth, stencil ) {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .clearTarget() has been deprecated. Use .setRenderTarget() and .clear() instead.' );\n\t\tthis.setRenderTarget( renderTarget );\n\t\tthis.clear( color, depth, stencil );\n\n\t},\n\tanimate: function ( callback ) {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .animate() is now .setAnimationLoop().' );\n\t\tthis.setAnimationLoop( callback );\n\n\t},\n\tgetCurrentRenderTarget: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .getCurrentRenderTarget() is now .getRenderTarget().' );\n\t\treturn this.getRenderTarget();\n\n\t},\n\tgetMaxAnisotropy: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .getMaxAnisotropy() is now .capabilities.getMaxAnisotropy().' );\n\t\treturn this.capabilities.getMaxAnisotropy();\n\n\t},\n\tgetPrecision: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .getPrecision() is now .capabilities.precision.' );\n\t\treturn this.capabilities.precision;\n\n\t},\n\tresetGLState: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .resetGLState() is now .state.reset().' );\n\t\treturn this.state.reset();\n\n\t},\n\tsupportsFloatTextures: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .supportsFloatTextures() is now .extensions.get( \\'OES_texture_float\\' ).' );\n\t\treturn this.extensions.get( 'OES_texture_float' );\n\n\t},\n\tsupportsHalfFloatTextures: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .supportsHalfFloatTextures() is now .extensions.get( \\'OES_texture_half_float\\' ).' );\n\t\treturn this.extensions.get( 'OES_texture_half_float' );\n\n\t},\n\tsupportsStandardDerivatives: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .supportsStandardDerivatives() is now .extensions.get( \\'OES_standard_derivatives\\' ).' );\n\t\treturn this.extensions.get( 'OES_standard_derivatives' );\n\n\t},\n\tsupportsCompressedTextureS3TC: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .supportsCompressedTextureS3TC() is now .extensions.get( \\'WEBGL_compressed_texture_s3tc\\' ).' );\n\t\treturn this.extensions.get( 'WEBGL_compressed_texture_s3tc' );\n\n\t},\n\tsupportsCompressedTexturePVRTC: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .supportsCompressedTexturePVRTC() is now .extensions.get( \\'WEBGL_compressed_texture_pvrtc\\' ).' );\n\t\treturn this.extensions.get( 'WEBGL_compressed_texture_pvrtc' );\n\n\t},\n\tsupportsBlendMinMax: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .supportsBlendMinMax() is now .extensions.get( \\'EXT_blend_minmax\\' ).' );\n\t\treturn this.extensions.get( 'EXT_blend_minmax' );\n\n\t},\n\tsupportsVertexTextures: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .supportsVertexTextures() is now .capabilities.vertexTextures.' );\n\t\treturn this.capabilities.vertexTextures;\n\n\t},\n\tsupportsInstancedArrays: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .supportsInstancedArrays() is now .extensions.get( \\'ANGLE_instanced_arrays\\' ).' );\n\t\treturn this.extensions.get( 'ANGLE_instanced_arrays' );\n\n\t},\n\tenableScissorTest: function ( boolean ) {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .enableScissorTest() is now .setScissorTest().' );\n\t\tthis.setScissorTest( boolean );\n\n\t},\n\tinitMaterial: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .initMaterial() has been removed.' );\n\n\t},\n\taddPrePlugin: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .addPrePlugin() has been removed.' );\n\n\t},\n\taddPostPlugin: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .addPostPlugin() has been removed.' );\n\n\t},\n\tupdateShadowMap: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .updateShadowMap() has been removed.' );\n\n\t},\n\tsetFaceCulling: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .setFaceCulling() has been removed.' );\n\n\t},\n\tallocTextureUnit: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .allocTextureUnit() has been removed.' );\n\n\t},\n\tsetTexture: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .setTexture() has been removed.' );\n\n\t},\n\tsetTexture2D: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .setTexture2D() has been removed.' );\n\n\t},\n\tsetTextureCube: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .setTextureCube() has been removed.' );\n\n\t},\n\tgetActiveMipMapLevel: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .getActiveMipMapLevel() is now .getActiveMipmapLevel().' );\n\t\treturn this.getActiveMipmapLevel();\n\n\t}\n\n} );\n\nObject.defineProperties( WebGLRenderer.prototype, {\n\n\tshadowMapEnabled: {\n\t\tget: function () {\n\n\t\t\treturn this.shadowMap.enabled;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .shadowMapEnabled is now .shadowMap.enabled.' );\n\t\t\tthis.shadowMap.enabled = value;\n\n\t\t}\n\t},\n\tshadowMapType: {\n\t\tget: function () {\n\n\t\t\treturn this.shadowMap.type;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .shadowMapType is now .shadowMap.type.' );\n\t\t\tthis.shadowMap.type = value;\n\n\t\t}\n\t},\n\tshadowMapCullFace: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .shadowMapCullFace has been removed. Set Material.shadowSide instead.' );\n\t\t\treturn undefined;\n\n\t\t},\n\t\tset: function ( /* value */ ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .shadowMapCullFace has been removed. Set Material.shadowSide instead.' );\n\n\t\t}\n\t},\n\tcontext: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .context has been removed. Use .getContext() instead.' );\n\t\t\treturn this.getContext();\n\n\t\t}\n\t},\n\tvr: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .vr has been renamed to .xr' );\n\t\t\treturn this.xr;\n\n\t\t}\n\t},\n\tgammaInput: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .gammaInput has been removed. Set the encoding for textures via Texture.encoding instead.' );\n\t\t\treturn false;\n\n\t\t},\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .gammaInput has been removed. Set the encoding for textures via Texture.encoding instead.' );\n\n\t\t}\n\t},\n\tgammaOutput: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .gammaOutput has been removed. Set WebGLRenderer.outputEncoding instead.' );\n\t\t\treturn false;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .gammaOutput has been removed. Set WebGLRenderer.outputEncoding instead.' );\n\t\t\tthis.outputEncoding = ( value === true ) ? sRGBEncoding : LinearEncoding;\n\n\t\t}\n\t},\n\ttoneMappingWhitePoint: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .toneMappingWhitePoint has been removed.' );\n\t\t\treturn 1.0;\n\n\t\t},\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .toneMappingWhitePoint has been removed.' );\n\n\t\t}\n\t},\n\n} );\n\nObject.defineProperties( WebGLShadowMap.prototype, {\n\n\tcullFace: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .shadowMap.cullFace has been removed. Set Material.shadowSide instead.' );\n\t\t\treturn undefined;\n\n\t\t},\n\t\tset: function ( /* cullFace */ ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .shadowMap.cullFace has been removed. Set Material.shadowSide instead.' );\n\n\t\t}\n\t},\n\trenderReverseSided: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .shadowMap.renderReverseSided has been removed. Set Material.shadowSide instead.' );\n\t\t\treturn undefined;\n\n\t\t},\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .shadowMap.renderReverseSided has been removed. Set Material.shadowSide instead.' );\n\n\t\t}\n\t},\n\trenderSingleSided: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .shadowMap.renderSingleSided has been removed. Set Material.shadowSide instead.' );\n\t\t\treturn undefined;\n\n\t\t},\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .shadowMap.renderSingleSided has been removed. Set Material.shadowSide instead.' );\n\n\t\t}\n\t}\n\n} );\n\nfunction WebGLRenderTargetCube( width, height, options ) {\n\n\tconsole.warn( 'THREE.WebGLRenderTargetCube( width, height, options ) is now WebGLCubeRenderTarget( size, options ).' );\n\treturn new WebGLCubeRenderTarget( width, options );\n\n}\n\n//\n\nObject.defineProperties( WebGLRenderTarget.prototype, {\n\n\twrapS: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .wrapS is now .texture.wrapS.' );\n\t\t\treturn this.texture.wrapS;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .wrapS is now .texture.wrapS.' );\n\t\t\tthis.texture.wrapS = value;\n\n\t\t}\n\t},\n\twrapT: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .wrapT is now .texture.wrapT.' );\n\t\t\treturn this.texture.wrapT;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .wrapT is now .texture.wrapT.' );\n\t\t\tthis.texture.wrapT = value;\n\n\t\t}\n\t},\n\tmagFilter: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .magFilter is now .texture.magFilter.' );\n\t\t\treturn this.texture.magFilter;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .magFilter is now .texture.magFilter.' );\n\t\t\tthis.texture.magFilter = value;\n\n\t\t}\n\t},\n\tminFilter: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .minFilter is now .texture.minFilter.' );\n\t\t\treturn this.texture.minFilter;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .minFilter is now .texture.minFilter.' );\n\t\t\tthis.texture.minFilter = value;\n\n\t\t}\n\t},\n\tanisotropy: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .anisotropy is now .texture.anisotropy.' );\n\t\t\treturn this.texture.anisotropy;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .anisotropy is now .texture.anisotropy.' );\n\t\t\tthis.texture.anisotropy = value;\n\n\t\t}\n\t},\n\toffset: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .offset is now .texture.offset.' );\n\t\t\treturn this.texture.offset;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .offset is now .texture.offset.' );\n\t\t\tthis.texture.offset = value;\n\n\t\t}\n\t},\n\trepeat: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .repeat is now .texture.repeat.' );\n\t\t\treturn this.texture.repeat;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .repeat is now .texture.repeat.' );\n\t\t\tthis.texture.repeat = value;\n\n\t\t}\n\t},\n\tformat: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .format is now .texture.format.' );\n\t\t\treturn this.texture.format;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .format is now .texture.format.' );\n\t\t\tthis.texture.format = value;\n\n\t\t}\n\t},\n\ttype: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .type is now .texture.type.' );\n\t\t\treturn this.texture.type;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .type is now .texture.type.' );\n\t\t\tthis.texture.type = value;\n\n\t\t}\n\t},\n\tgenerateMipmaps: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .generateMipmaps is now .texture.generateMipmaps.' );\n\t\t\treturn this.texture.generateMipmaps;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .generateMipmaps is now .texture.generateMipmaps.' );\n\t\t\tthis.texture.generateMipmaps = value;\n\n\t\t}\n\t}\n\n} );\n\n//\n\nObject.defineProperties( Audio.prototype, {\n\n\tload: {\n\t\tvalue: function ( file ) {\n\n\t\t\tconsole.warn( 'THREE.Audio: .load has been deprecated. Use THREE.AudioLoader instead.' );\n\t\t\tconst scope = this;\n\t\t\tconst audioLoader = new AudioLoader();\n\t\t\taudioLoader.load( file, function ( buffer ) {\n\n\t\t\t\tscope.setBuffer( buffer );\n\n\t\t\t} );\n\t\t\treturn this;\n\n\t\t}\n\t},\n\tstartTime: {\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.Audio: .startTime is now .play( delay ).' );\n\n\t\t}\n\t}\n\n} );\n\nAudioAnalyser.prototype.getData = function () {\n\n\tconsole.warn( 'THREE.AudioAnalyser: .getData() is now .getFrequencyData().' );\n\treturn this.getFrequencyData();\n\n};\n\n//\n\nCubeCamera.prototype.updateCubeMap = function ( renderer, scene ) {\n\n\tconsole.warn( 'THREE.CubeCamera: .updateCubeMap() is now .update().' );\n\treturn this.update( renderer, scene );\n\n};\n\nCubeCamera.prototype.clear = function ( renderer, color, depth, stencil ) {\n\n\tconsole.warn( 'THREE.CubeCamera: .clear() is now .renderTarget.clear().' );\n\treturn this.renderTarget.clear( renderer, color, depth, stencil );\n\n};\n\n//\n\nconst GeometryUtils = {\n\n\tmerge: function ( geometry1, geometry2, materialIndexOffset ) {\n\n\t\tconsole.warn( 'THREE.GeometryUtils: .merge() has been moved to Geometry. Use geometry.merge( geometry2, matrix, materialIndexOffset ) instead.' );\n\t\tlet matrix;\n\n\t\tif ( geometry2.isMesh ) {\n\n\t\t\tgeometry2.matrixAutoUpdate && geometry2.updateMatrix();\n\n\t\t\tmatrix = geometry2.matrix;\n\t\t\tgeometry2 = geometry2.geometry;\n\n\t\t}\n\n\t\tgeometry1.merge( geometry2, matrix, materialIndexOffset );\n\n\t},\n\n\tcenter: function ( geometry ) {\n\n\t\tconsole.warn( 'THREE.GeometryUtils: .center() has been moved to Geometry. Use geometry.center() instead.' );\n\t\treturn geometry.center();\n\n\t}\n\n};\n\nImageUtils.crossOrigin = undefined;\n\nImageUtils.loadTexture = function ( url, mapping, onLoad, onError ) {\n\n\tconsole.warn( 'THREE.ImageUtils.loadTexture has been deprecated. Use THREE.TextureLoader() instead.' );\n\n\tconst loader = new TextureLoader();\n\tloader.setCrossOrigin( this.crossOrigin );\n\n\tconst texture = loader.load( url, onLoad, undefined, onError );\n\n\tif ( mapping ) texture.mapping = mapping;\n\n\treturn texture;\n\n};\n\nImageUtils.loadTextureCube = function ( urls, mapping, onLoad, onError ) {\n\n\tconsole.warn( 'THREE.ImageUtils.loadTextureCube has been deprecated. Use THREE.CubeTextureLoader() instead.' );\n\n\tconst loader = new CubeTextureLoader();\n\tloader.setCrossOrigin( this.crossOrigin );\n\n\tconst texture = loader.load( urls, onLoad, undefined, onError );\n\n\tif ( mapping ) texture.mapping = mapping;\n\n\treturn texture;\n\n};\n\nImageUtils.loadCompressedTexture = function () {\n\n\tconsole.error( 'THREE.ImageUtils.loadCompressedTexture has been removed. Use THREE.DDSLoader instead.' );\n\n};\n\nImageUtils.loadCompressedTextureCube = function () {\n\n\tconsole.error( 'THREE.ImageUtils.loadCompressedTextureCube has been removed. Use THREE.DDSLoader instead.' );\n\n};\n\n//\n\nfunction CanvasRenderer() {\n\n\tconsole.error( 'THREE.CanvasRenderer has been removed' );\n\n}\n\n//\n\nfunction JSONLoader() {\n\n\tconsole.error( 'THREE.JSONLoader has been removed.' );\n\n}\n\n//\n\nconst SceneUtils = {\n\n\tcreateMultiMaterialObject: function ( /* geometry, materials */ ) {\n\n\t\tconsole.error( 'THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js' );\n\n\t},\n\n\tdetach: function ( /* child, parent, scene */ ) {\n\n\t\tconsole.error( 'THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js' );\n\n\t},\n\n\tattach: function ( /* child, scene, parent */ ) {\n\n\t\tconsole.error( 'THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js' );\n\n\t}\n\n};\n\n//\n\nfunction LensFlare() {\n\n\tconsole.error( 'THREE.LensFlare has been moved to /examples/jsm/objects/Lensflare.js' );\n\n}\n\nif ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {\n\n\t/* eslint-disable no-undef */\n\t__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'register', { detail: {\n\t\trevision: REVISION,\n\t} } ) );\n\t/* eslint-enable no-undef */\n\n}\n\nexport { ACESFilmicToneMapping, AddEquation, AddOperation, AdditiveAnimationBlendMode, AdditiveBlending, AlphaFormat, AlwaysDepth, AlwaysStencilFunc, AmbientLight, AmbientLightProbe, AnimationClip, AnimationLoader, AnimationMixer, AnimationObjectGroup, AnimationUtils, ArcCurve, ArrayCamera, ArrowHelper, Audio, AudioAnalyser, AudioContext, AudioListener, AudioLoader, AxesHelper, AxisHelper, BackSide, BasicDepthPacking, BasicShadowMap, BinaryTextureLoader, Bone, BooleanKeyframeTrack, BoundingBoxHelper, Box2, Box3, Box3Helper, BoxBufferGeometry, BoxGeometry, BoxHelper, BufferAttribute, BufferGeometry, BufferGeometryLoader, ByteType, Cache, Camera, CameraHelper, CanvasRenderer, CanvasTexture, CatmullRomCurve3, CineonToneMapping, CircleBufferGeometry, CircleGeometry, ClampToEdgeWrapping, Clock, ClosedSplineCurve3, Color, ColorKeyframeTrack, CompressedTexture, CompressedTextureLoader, ConeBufferGeometry, ConeGeometry, CubeCamera, BoxGeometry as CubeGeometry, CubeReflectionMapping, CubeRefractionMapping, CubeTexture, CubeTextureLoader, CubeUVReflectionMapping, CubeUVRefractionMapping, CubicBezierCurve, CubicBezierCurve3, CubicInterpolant, CullFaceBack, CullFaceFront, CullFaceFrontBack, CullFaceNone, Curve, CurvePath, CustomBlending, CustomToneMapping, CylinderBufferGeometry, CylinderGeometry, Cylindrical, DataTexture, DataTexture2DArray, DataTexture3D, DataTextureLoader, DataUtils, DecrementStencilOp, DecrementWrapStencilOp, DefaultLoadingManager, DepthFormat, DepthStencilFormat, DepthTexture, DirectionalLight, DirectionalLightHelper, DiscreteInterpolant, DodecahedronBufferGeometry, DodecahedronGeometry, DoubleSide, DstAlphaFactor, DstColorFactor, DynamicBufferAttribute, DynamicCopyUsage, DynamicDrawUsage, DynamicReadUsage, EdgesGeometry, EdgesHelper, EllipseCurve, EqualDepth, EqualStencilFunc, EquirectangularReflectionMapping, EquirectangularRefractionMapping, Euler, EventDispatcher, ExtrudeBufferGeometry, ExtrudeGeometry, Face3, Face4, FaceColors, FileLoader, FlatShading, Float16BufferAttribute, Float32Attribute, Float32BufferAttribute, Float64Attribute, Float64BufferAttribute, FloatType, Fog, FogExp2, Font, FontLoader, FrontSide, Frustum, GLBufferAttribute, GLSL1, GLSL3, GammaEncoding, Geometry, GeometryUtils, GreaterDepth, GreaterEqualDepth, GreaterEqualStencilFunc, GreaterStencilFunc, GridHelper, Group, HalfFloatType, HemisphereLight, HemisphereLightHelper, HemisphereLightProbe, IcosahedronBufferGeometry, IcosahedronGeometry, ImageBitmapLoader, ImageLoader, ImageUtils, ImmediateRenderObject, IncrementStencilOp, IncrementWrapStencilOp, InstancedBufferAttribute, InstancedBufferGeometry, InstancedInterleavedBuffer, InstancedMesh, Int16Attribute, Int16BufferAttribute, Int32Attribute, Int32BufferAttribute, Int8Attribute, Int8BufferAttribute, IntType, InterleavedBuffer, InterleavedBufferAttribute, Interpolant, InterpolateDiscrete, InterpolateLinear, InterpolateSmooth, InvertStencilOp, JSONLoader, KeepStencilOp, KeyframeTrack, LOD, LatheBufferGeometry, LatheGeometry, Layers, LensFlare, LessDepth, LessEqualDepth, LessEqualStencilFunc, LessStencilFunc, Light, LightProbe, Line, Line3, LineBasicMaterial, LineCurve, LineCurve3, LineDashedMaterial, LineLoop, LinePieces, LineSegments, LineStrip, LinearEncoding, LinearFilter, LinearInterpolant, LinearMipMapLinearFilter, LinearMipMapNearestFilter, LinearMipmapLinearFilter, LinearMipmapNearestFilter, LinearToneMapping, Loader, LoaderUtils, LoadingManager, LogLuvEncoding, LoopOnce, LoopPingPong, LoopRepeat, LuminanceAlphaFormat, LuminanceFormat, MOUSE, Material, MaterialLoader, MathUtils as Math, MathUtils, Matrix3, Matrix4, MaxEquation, Mesh, MeshBasicMaterial, MeshDepthMaterial, MeshDistanceMaterial, MeshFaceMaterial, MeshLambertMaterial, MeshMatcapMaterial, MeshNormalMaterial, MeshPhongMaterial, MeshPhysicalMaterial, MeshStandardMaterial, MeshToonMaterial, MinEquation, MirroredRepeatWrapping, MixOperation, MultiMaterial, MultiplyBlending, MultiplyOperation, NearestFilter, NearestMipMapLinearFilter, NearestMipMapNearestFilter, NearestMipmapLinearFilter, NearestMipmapNearestFilter, NeverDepth, NeverStencilFunc, NoBlending, NoColors, NoToneMapping, NormalAnimationBlendMode, NormalBlending, NotEqualDepth, NotEqualStencilFunc, NumberKeyframeTrack, Object3D, ObjectLoader, ObjectSpaceNormalMap, OctahedronBufferGeometry, OctahedronGeometry, OneFactor, OneMinusDstAlphaFactor, OneMinusDstColorFactor, OneMinusSrcAlphaFactor, OneMinusSrcColorFactor, OrthographicCamera, PCFShadowMap, PCFSoftShadowMap, PMREMGenerator, ParametricBufferGeometry, ParametricGeometry, Particle, ParticleBasicMaterial, ParticleSystem, ParticleSystemMaterial, Path, PerspectiveCamera, Plane, PlaneBufferGeometry, PlaneGeometry, PlaneHelper, PointCloud, PointCloudMaterial, PointLight, PointLightHelper, Points, PointsMaterial, PolarGridHelper, PolyhedronBufferGeometry, PolyhedronGeometry, PositionalAudio, PropertyBinding, PropertyMixer, QuadraticBezierCurve, QuadraticBezierCurve3, Quaternion, QuaternionKeyframeTrack, QuaternionLinearInterpolant, REVISION, RGBADepthPacking, RGBAFormat, RGBAIntegerFormat, RGBA_ASTC_10x10_Format, RGBA_ASTC_10x5_Format, RGBA_ASTC_10x6_Format, RGBA_ASTC_10x8_Format, RGBA_ASTC_12x10_Format, RGBA_ASTC_12x12_Format, RGBA_ASTC_4x4_Format, RGBA_ASTC_5x4_Format, RGBA_ASTC_5x5_Format, RGBA_ASTC_6x5_Format, RGBA_ASTC_6x6_Format, RGBA_ASTC_8x5_Format, RGBA_ASTC_8x6_Format, RGBA_ASTC_8x8_Format, RGBA_BPTC_Format, RGBA_ETC2_EAC_Format, RGBA_PVRTC_2BPPV1_Format, RGBA_PVRTC_4BPPV1_Format, RGBA_S3TC_DXT1_Format, RGBA_S3TC_DXT3_Format, RGBA_S3TC_DXT5_Format, RGBDEncoding, RGBEEncoding, RGBEFormat, RGBFormat, RGBIntegerFormat, RGBM16Encoding, RGBM7Encoding, RGB_ETC1_Format, RGB_ETC2_Format, RGB_PVRTC_2BPPV1_Format, RGB_PVRTC_4BPPV1_Format, RGB_S3TC_DXT1_Format, RGFormat, RGIntegerFormat, RawShaderMaterial, Ray, Raycaster, RectAreaLight, RedFormat, RedIntegerFormat, ReinhardToneMapping, RepeatWrapping, ReplaceStencilOp, ReverseSubtractEquation, RingBufferGeometry, RingGeometry, SRGB8_ALPHA8_ASTC_10x10_Format, SRGB8_ALPHA8_ASTC_10x5_Format, SRGB8_ALPHA8_ASTC_10x6_Format, SRGB8_ALPHA8_ASTC_10x8_Format, SRGB8_ALPHA8_ASTC_12x10_Format, SRGB8_ALPHA8_ASTC_12x12_Format, SRGB8_ALPHA8_ASTC_4x4_Format, SRGB8_ALPHA8_ASTC_5x4_Format, SRGB8_ALPHA8_ASTC_5x5_Format, SRGB8_ALPHA8_ASTC_6x5_Format, SRGB8_ALPHA8_ASTC_6x6_Format, SRGB8_ALPHA8_ASTC_8x5_Format, SRGB8_ALPHA8_ASTC_8x6_Format, SRGB8_ALPHA8_ASTC_8x8_Format, Scene, SceneUtils, ShaderChunk, ShaderLib, ShaderMaterial, ShadowMaterial, Shape, ShapeBufferGeometry, ShapeGeometry, ShapePath, ShapeUtils, ShortType, Skeleton, SkeletonHelper, SkinnedMesh, SmoothShading, Sphere, SphereBufferGeometry, SphereGeometry, Spherical, SphericalHarmonics3, Spline, SplineCurve, SplineCurve3, SpotLight, SpotLightHelper, Sprite, SpriteMaterial, SrcAlphaFactor, SrcAlphaSaturateFactor, SrcColorFactor, StaticCopyUsage, StaticDrawUsage, StaticReadUsage, StereoCamera, StreamCopyUsage, StreamDrawUsage, StreamReadUsage, StringKeyframeTrack, SubtractEquation, SubtractiveBlending, TOUCH, TangentSpaceNormalMap, TetrahedronBufferGeometry, TetrahedronGeometry, TextBufferGeometry, TextGeometry, Texture, TextureLoader, TorusBufferGeometry, TorusGeometry, TorusKnotBufferGeometry, TorusKnotGeometry, Triangle, TriangleFanDrawMode, TriangleStripDrawMode, TrianglesDrawMode, TubeBufferGeometry, TubeGeometry, UVMapping, Uint16Attribute, Uint16BufferAttribute, Uint32Attribute, Uint32BufferAttribute, Uint8Attribute, Uint8BufferAttribute, Uint8ClampedAttribute, Uint8ClampedBufferAttribute, Uniform, UniformsLib, UniformsUtils, UnsignedByteType, UnsignedInt248Type, UnsignedIntType, UnsignedShort4444Type, UnsignedShort5551Type, UnsignedShort565Type, UnsignedShortType, VSMShadowMap, Vector2, Vector3, Vector4, VectorKeyframeTrack, Vertex, VertexColors, VideoTexture, WebGL1Renderer, WebGLCubeRenderTarget, WebGLMultisampleRenderTarget, WebGLRenderTarget, WebGLRenderTargetCube, WebGLRenderer, WebGLUtils, WireframeGeometry, WireframeHelper, WrapAroundEnding, XHRLoader, ZeroCurvatureEnding, ZeroFactor, ZeroSlopeEnding, ZeroStencilOp, sRGBEncoding };\n","import {\n\tEventDispatcher,\n\tMOUSE,\n\tQuaternion,\n\tSpherical,\n\tTOUCH,\n\tVector2,\n\tVector3\n} from '../../../build/three.module.js';\n\n// This set of controls performs orbiting, dollying (zooming), and panning.\n// Unlike TrackballControls, it maintains the \"up\" direction object.up (+Y by default).\n//\n//    Orbit - left mouse / touch: one-finger move\n//    Zoom - middle mouse, or mousewheel / touch: two-finger spread or squish\n//    Pan - right mouse, or left mouse + ctrl/meta/shiftKey, or arrow keys / touch: two-finger move\n\nvar OrbitControls = function ( object, domElement ) {\n\n\tif ( domElement === undefined ) console.warn( 'THREE.OrbitControls: The second parameter \"domElement\" is now mandatory.' );\n\tif ( domElement === document ) console.error( 'THREE.OrbitControls: \"document\" should not be used as the target \"domElement\". Please use \"renderer.domElement\" instead.' );\n\n\tthis.object = object;\n\tthis.domElement = domElement;\n\n\t// Set to false to disable this control\n\tthis.enabled = true;\n\n\t// \"target\" sets the location of focus, where the object orbits around\n\tthis.target = new Vector3();\n\n\t// How far you can dolly in and out ( PerspectiveCamera only )\n\tthis.minDistance = 0;\n\tthis.maxDistance = Infinity;\n\n\t// How far you can zoom in and out ( OrthographicCamera only )\n\tthis.minZoom = 0;\n\tthis.maxZoom = Infinity;\n\n\t// How far you can orbit vertically, upper and lower limits.\n\t// Range is 0 to Math.PI radians.\n\tthis.minPolarAngle = 0; // radians\n\tthis.maxPolarAngle = Math.PI; // radians\n\n\t// How far you can orbit horizontally, upper and lower limits.\n\t// If set, the interval [ min, max ] must be a sub-interval of [ - 2 PI, 2 PI ], with ( max - min < 2 PI )\n\tthis.minAzimuthAngle = - Infinity; // radians\n\tthis.maxAzimuthAngle = Infinity; // radians\n\n\t// Set to true to enable damping (inertia)\n\t// If damping is enabled, you must call controls.update() in your animation loop\n\tthis.enableDamping = false;\n\tthis.dampingFactor = 0.05;\n\n\t// This option actually enables dollying in and out; left as \"zoom\" for backwards compatibility.\n\t// Set to false to disable zooming\n\tthis.enableZoom = true;\n\tthis.zoomSpeed = 1.0;\n\n\t// Set to false to disable rotating\n\tthis.enableRotate = true;\n\tthis.rotateSpeed = 1.0;\n\n\t// Set to false to disable panning\n\tthis.enablePan = true;\n\tthis.panSpeed = 1.0;\n\tthis.screenSpacePanning = true; // if false, pan orthogonal to world-space direction camera.up\n\tthis.keyPanSpeed = 7.0;\t// pixels moved per arrow key push\n\n\t// Set to true to automatically rotate around the target\n\t// If auto-rotate is enabled, you must call controls.update() in your animation loop\n\tthis.autoRotate = false;\n\tthis.autoRotateSpeed = 2.0; // 30 seconds per round when fps is 60\n\n\t// Set to false to disable use of the keys\n\tthis.enableKeys = true;\n\n\t// The four arrow keys\n\tthis.keys = { LEFT: 37, UP: 38, RIGHT: 39, BOTTOM: 40 };\n\n\t// Mouse buttons\n\tthis.mouseButtons = { LEFT: MOUSE.ROTATE, MIDDLE: MOUSE.DOLLY, RIGHT: MOUSE.PAN };\n\n\t// Touch fingers\n\tthis.touches = { ONE: TOUCH.ROTATE, TWO: TOUCH.DOLLY_PAN };\n\n\t// for reset\n\tthis.target0 = this.target.clone();\n\tthis.position0 = this.object.position.clone();\n\tthis.zoom0 = this.object.zoom;\n\n\t//\n\t// public methods\n\t//\n\n\tthis.getPolarAngle = function () {\n\n\t\treturn spherical.phi;\n\n\t};\n\n\tthis.getAzimuthalAngle = function () {\n\n\t\treturn spherical.theta;\n\n\t};\n\n\tthis.saveState = function () {\n\n\t\tscope.target0.copy( scope.target );\n\t\tscope.position0.copy( scope.object.position );\n\t\tscope.zoom0 = scope.object.zoom;\n\n\t};\n\n\tthis.reset = function () {\n\n\t\tscope.target.copy( scope.target0 );\n\t\tscope.object.position.copy( scope.position0 );\n\t\tscope.object.zoom = scope.zoom0;\n\n\t\tscope.object.updateProjectionMatrix();\n\t\tscope.dispatchEvent( changeEvent );\n\n\t\tscope.update();\n\n\t\tstate = STATE.NONE;\n\n\t};\n\n\t// this method is exposed, but perhaps it would be better if we can make it private...\n\tthis.update = function () {\n\n\t\tvar offset = new Vector3();\n\n\t\t// so camera.up is the orbit axis\n\t\tvar quat = new Quaternion().setFromUnitVectors( object.up, new Vector3( 0, 1, 0 ) );\n\t\tvar quatInverse = quat.clone().invert();\n\n\t\tvar lastPosition = new Vector3();\n\t\tvar lastQuaternion = new Quaternion();\n\n\t\tvar twoPI = 2 * Math.PI;\n\n\t\treturn function update() {\n\n\t\t\tvar position = scope.object.position;\n\n\t\t\toffset.copy( position ).sub( scope.target );\n\n\t\t\t// rotate offset to \"y-axis-is-up\" space\n\t\t\toffset.applyQuaternion( quat );\n\n\t\t\t// angle from z-axis around y-axis\n\t\t\tspherical.setFromVector3( offset );\n\n\t\t\tif ( scope.autoRotate && state === STATE.NONE ) {\n\n\t\t\t\trotateLeft( getAutoRotationAngle() );\n\n\t\t\t}\n\n\t\t\tif ( scope.enableDamping ) {\n\n\t\t\t\tspherical.theta += sphericalDelta.theta * scope.dampingFactor;\n\t\t\t\tspherical.phi += sphericalDelta.phi * scope.dampingFactor;\n\n\t\t\t} else {\n\n\t\t\t\tspherical.theta += sphericalDelta.theta;\n\t\t\t\tspherical.phi += sphericalDelta.phi;\n\n\t\t\t}\n\n\t\t\t// restrict theta to be between desired limits\n\n\t\t\tvar min = scope.minAzimuthAngle;\n\t\t\tvar max = scope.maxAzimuthAngle;\n\n\t\t\tif ( isFinite( min ) && isFinite( max ) ) {\n\n\t\t\t\tif ( min < - Math.PI ) min += twoPI; else if ( min > Math.PI ) min -= twoPI;\n\n\t\t\t\tif ( max < - Math.PI ) max += twoPI; else if ( max > Math.PI ) max -= twoPI;\n\n\t\t\t\tif ( min <= max ) {\n\n\t\t\t\t\tspherical.theta = Math.max( min, Math.min( max, spherical.theta ) );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tspherical.theta = ( spherical.theta > ( min + max ) / 2 ) ?\n\t\t\t\t\t\tMath.max( min, spherical.theta ) :\n\t\t\t\t\t\tMath.min( max, spherical.theta );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// restrict phi to be between desired limits\n\t\t\tspherical.phi = Math.max( scope.minPolarAngle, Math.min( scope.maxPolarAngle, spherical.phi ) );\n\n\t\t\tspherical.makeSafe();\n\n\n\t\t\tspherical.radius *= scale;\n\n\t\t\t// restrict radius to be between desired limits\n\t\t\tspherical.radius = Math.max( scope.minDistance, Math.min( scope.maxDistance, spherical.radius ) );\n\n\t\t\t// move target to panned location\n\n\t\t\tif ( scope.enableDamping === true ) {\n\n\t\t\t\tscope.target.addScaledVector( panOffset, scope.dampingFactor );\n\n\t\t\t} else {\n\n\t\t\t\tscope.target.add( panOffset );\n\n\t\t\t}\n\n\t\t\toffset.setFromSpherical( spherical );\n\n\t\t\t// rotate offset back to \"camera-up-vector-is-up\" space\n\t\t\toffset.applyQuaternion( quatInverse );\n\n\t\t\tposition.copy( scope.target ).add( offset );\n\n\t\t\tscope.object.lookAt( scope.target );\n\n\t\t\tif ( scope.enableDamping === true ) {\n\n\t\t\t\tsphericalDelta.theta *= ( 1 - scope.dampingFactor );\n\t\t\t\tsphericalDelta.phi *= ( 1 - scope.dampingFactor );\n\n\t\t\t\tpanOffset.multiplyScalar( 1 - scope.dampingFactor );\n\n\t\t\t} else {\n\n\t\t\t\tsphericalDelta.set( 0, 0, 0 );\n\n\t\t\t\tpanOffset.set( 0, 0, 0 );\n\n\t\t\t}\n\n\t\t\tscale = 1;\n\n\t\t\t// update condition is:\n\t\t\t// min(camera displacement, camera rotation in radians)^2 > EPS\n\t\t\t// using small-angle approximation cos(x/2) = 1 - x^2 / 8\n\n\t\t\tif ( zoomChanged ||\n\t\t\t\tlastPosition.distanceToSquared( scope.object.position ) > EPS ||\n\t\t\t\t8 * ( 1 - lastQuaternion.dot( scope.object.quaternion ) ) > EPS ) {\n\n\t\t\t\tscope.dispatchEvent( changeEvent );\n\n\t\t\t\tlastPosition.copy( scope.object.position );\n\t\t\t\tlastQuaternion.copy( scope.object.quaternion );\n\t\t\t\tzoomChanged = false;\n\n\t\t\t\treturn true;\n\n\t\t\t}\n\n\t\t\treturn false;\n\n\t\t};\n\n\t}();\n\n\tthis.dispose = function () {\n\n\t\tscope.domElement.removeEventListener( 'contextmenu', onContextMenu, false );\n\n\t\tscope.domElement.removeEventListener( 'pointerdown', onPointerDown, false );\n\t\tscope.domElement.removeEventListener( 'wheel', onMouseWheel, false );\n\n\t\tscope.domElement.removeEventListener( 'touchstart', onTouchStart, false );\n\t\tscope.domElement.removeEventListener( 'touchend', onTouchEnd, false );\n\t\tscope.domElement.removeEventListener( 'touchmove', onTouchMove, false );\n\n\t\tscope.domElement.ownerDocument.removeEventListener( 'pointermove', onPointerMove, false );\n\t\tscope.domElement.ownerDocument.removeEventListener( 'pointerup', onPointerUp, false );\n\n\t\tscope.domElement.removeEventListener( 'keydown', onKeyDown, false );\n\n\t\t//scope.dispatchEvent( { type: 'dispose' } ); // should this be added here?\n\n\t};\n\n\t//\n\t// internals\n\t//\n\n\tvar scope = this;\n\n\tvar changeEvent = { type: 'change' };\n\tvar startEvent = { type: 'start' };\n\tvar endEvent = { type: 'end' };\n\n\tvar STATE = {\n\t\tNONE: - 1,\n\t\tROTATE: 0,\n\t\tDOLLY: 1,\n\t\tPAN: 2,\n\t\tTOUCH_ROTATE: 3,\n\t\tTOUCH_PAN: 4,\n\t\tTOUCH_DOLLY_PAN: 5,\n\t\tTOUCH_DOLLY_ROTATE: 6\n\t};\n\n\tvar state = STATE.NONE;\n\n\tvar EPS = 0.000001;\n\n\t// current position in spherical coordinates\n\tvar spherical = new Spherical();\n\tvar sphericalDelta = new Spherical();\n\n\tvar scale = 1;\n\tvar panOffset = new Vector3();\n\tvar zoomChanged = false;\n\n\tvar rotateStart = new Vector2();\n\tvar rotateEnd = new Vector2();\n\tvar rotateDelta = new Vector2();\n\n\tvar panStart = new Vector2();\n\tvar panEnd = new Vector2();\n\tvar panDelta = new Vector2();\n\n\tvar dollyStart = new Vector2();\n\tvar dollyEnd = new Vector2();\n\tvar dollyDelta = new Vector2();\n\n\tfunction getAutoRotationAngle() {\n\n\t\treturn 2 * Math.PI / 60 / 60 * scope.autoRotateSpeed;\n\n\t}\n\n\tfunction getZoomScale() {\n\n\t\treturn Math.pow( 0.95, scope.zoomSpeed );\n\n\t}\n\n\tfunction rotateLeft( angle ) {\n\n\t\tsphericalDelta.theta -= angle;\n\n\t}\n\n\tfunction rotateUp( angle ) {\n\n\t\tsphericalDelta.phi -= angle;\n\n\t}\n\n\tvar panLeft = function () {\n\n\t\tvar v = new Vector3();\n\n\t\treturn function panLeft( distance, objectMatrix ) {\n\n\t\t\tv.setFromMatrixColumn( objectMatrix, 0 ); // get X column of objectMatrix\n\t\t\tv.multiplyScalar( - distance );\n\n\t\t\tpanOffset.add( v );\n\n\t\t};\n\n\t}();\n\n\tvar panUp = function () {\n\n\t\tvar v = new Vector3();\n\n\t\treturn function panUp( distance, objectMatrix ) {\n\n\t\t\tif ( scope.screenSpacePanning === true ) {\n\n\t\t\t\tv.setFromMatrixColumn( objectMatrix, 1 );\n\n\t\t\t} else {\n\n\t\t\t\tv.setFromMatrixColumn( objectMatrix, 0 );\n\t\t\t\tv.crossVectors( scope.object.up, v );\n\n\t\t\t}\n\n\t\t\tv.multiplyScalar( distance );\n\n\t\t\tpanOffset.add( v );\n\n\t\t};\n\n\t}();\n\n\t// deltaX and deltaY are in pixels; right and down are positive\n\tvar pan = function () {\n\n\t\tvar offset = new Vector3();\n\n\t\treturn function pan( deltaX, deltaY ) {\n\n\t\t\tvar element = scope.domElement;\n\n\t\t\tif ( scope.object.isPerspectiveCamera ) {\n\n\t\t\t\t// perspective\n\t\t\t\tvar position = scope.object.position;\n\t\t\t\toffset.copy( position ).sub( scope.target );\n\t\t\t\tvar targetDistance = offset.length();\n\n\t\t\t\t// half of the fov is center to top of screen\n\t\t\t\ttargetDistance *= Math.tan( ( scope.object.fov / 2 ) * Math.PI / 180.0 );\n\n\t\t\t\t// we use only clientHeight here so aspect ratio does not distort speed\n\t\t\t\tpanLeft( 2 * deltaX * targetDistance / element.clientHeight, scope.object.matrix );\n\t\t\t\tpanUp( 2 * deltaY * targetDistance / element.clientHeight, scope.object.matrix );\n\n\t\t\t} else if ( scope.object.isOrthographicCamera ) {\n\n\t\t\t\t// orthographic\n\t\t\t\tpanLeft( deltaX * ( scope.object.right - scope.object.left ) / scope.object.zoom / element.clientWidth, scope.object.matrix );\n\t\t\t\tpanUp( deltaY * ( scope.object.top - scope.object.bottom ) / scope.object.zoom / element.clientHeight, scope.object.matrix );\n\n\t\t\t} else {\n\n\t\t\t\t// camera neither orthographic nor perspective\n\t\t\t\tconsole.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - pan disabled.' );\n\t\t\t\tscope.enablePan = false;\n\n\t\t\t}\n\n\t\t};\n\n\t}();\n\n\tfunction dollyOut( dollyScale ) {\n\n\t\tif ( scope.object.isPerspectiveCamera ) {\n\n\t\t\tscale /= dollyScale;\n\n\t\t} else if ( scope.object.isOrthographicCamera ) {\n\n\t\t\tscope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom * dollyScale ) );\n\t\t\tscope.object.updateProjectionMatrix();\n\t\t\tzoomChanged = true;\n\n\t\t} else {\n\n\t\t\tconsole.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );\n\t\t\tscope.enableZoom = false;\n\n\t\t}\n\n\t}\n\n\tfunction dollyIn( dollyScale ) {\n\n\t\tif ( scope.object.isPerspectiveCamera ) {\n\n\t\t\tscale *= dollyScale;\n\n\t\t} else if ( scope.object.isOrthographicCamera ) {\n\n\t\t\tscope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom / dollyScale ) );\n\t\t\tscope.object.updateProjectionMatrix();\n\t\t\tzoomChanged = true;\n\n\t\t} else {\n\n\t\t\tconsole.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );\n\t\t\tscope.enableZoom = false;\n\n\t\t}\n\n\t}\n\n\t//\n\t// event callbacks - update the object state\n\t//\n\n\tfunction handleMouseDownRotate( event ) {\n\n\t\trotateStart.set( event.clientX, event.clientY );\n\n\t}\n\n\tfunction handleMouseDownDolly( event ) {\n\n\t\tdollyStart.set( event.clientX, event.clientY );\n\n\t}\n\n\tfunction handleMouseDownPan( event ) {\n\n\t\tpanStart.set( event.clientX, event.clientY );\n\n\t}\n\n\tfunction handleMouseMoveRotate( event ) {\n\n\t\trotateEnd.set( event.clientX, event.clientY );\n\n\t\trotateDelta.subVectors( rotateEnd, rotateStart ).multiplyScalar( scope.rotateSpeed );\n\n\t\tvar element = scope.domElement;\n\n\t\trotateLeft( 2 * Math.PI * rotateDelta.x / element.clientHeight ); // yes, height\n\n\t\trotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight );\n\n\t\trotateStart.copy( rotateEnd );\n\n\t\tscope.update();\n\n\t}\n\n\tfunction handleMouseMoveDolly( event ) {\n\n\t\tdollyEnd.set( event.clientX, event.clientY );\n\n\t\tdollyDelta.subVectors( dollyEnd, dollyStart );\n\n\t\tif ( dollyDelta.y > 0 ) {\n\n\t\t\tdollyOut( getZoomScale() );\n\n\t\t} else if ( dollyDelta.y < 0 ) {\n\n\t\t\tdollyIn( getZoomScale() );\n\n\t\t}\n\n\t\tdollyStart.copy( dollyEnd );\n\n\t\tscope.update();\n\n\t}\n\n\tfunction handleMouseMovePan( event ) {\n\n\t\tpanEnd.set( event.clientX, event.clientY );\n\n\t\tpanDelta.subVectors( panEnd, panStart ).multiplyScalar( scope.panSpeed );\n\n\t\tpan( panDelta.x, panDelta.y );\n\n\t\tpanStart.copy( panEnd );\n\n\t\tscope.update();\n\n\t}\n\n\tfunction handleMouseUp( /*event*/ ) {\n\n\t\t// no-op\n\n\t}\n\n\tfunction handleMouseWheel( event ) {\n\n\t\tif ( event.deltaY < 0 ) {\n\n\t\t\tdollyIn( getZoomScale() );\n\n\t\t} else if ( event.deltaY > 0 ) {\n\n\t\t\tdollyOut( getZoomScale() );\n\n\t\t}\n\n\t\tscope.update();\n\n\t}\n\n\tfunction handleKeyDown( event ) {\n\n\t\tvar needsUpdate = false;\n\n\t\tswitch ( event.keyCode ) {\n\n\t\t\tcase scope.keys.UP:\n\t\t\t\tpan( 0, scope.keyPanSpeed );\n\t\t\t\tneedsUpdate = true;\n\t\t\t\tbreak;\n\n\t\t\tcase scope.keys.BOTTOM:\n\t\t\t\tpan( 0, - scope.keyPanSpeed );\n\t\t\t\tneedsUpdate = true;\n\t\t\t\tbreak;\n\n\t\t\tcase scope.keys.LEFT:\n\t\t\t\tpan( scope.keyPanSpeed, 0 );\n\t\t\t\tneedsUpdate = true;\n\t\t\t\tbreak;\n\n\t\t\tcase scope.keys.RIGHT:\n\t\t\t\tpan( - scope.keyPanSpeed, 0 );\n\t\t\t\tneedsUpdate = true;\n\t\t\t\tbreak;\n\n\t\t}\n\n\t\tif ( needsUpdate ) {\n\n\t\t\t// prevent the browser from scrolling on cursor keys\n\t\t\tevent.preventDefault();\n\n\t\t\tscope.update();\n\n\t\t}\n\n\n\t}\n\n\tfunction handleTouchStartRotate( event ) {\n\n\t\tif ( event.touches.length == 1 ) {\n\n\t\t\trotateStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );\n\n\t\t} else {\n\n\t\t\tvar x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );\n\t\t\tvar y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );\n\n\t\t\trotateStart.set( x, y );\n\n\t\t}\n\n\t}\n\n\tfunction handleTouchStartPan( event ) {\n\n\t\tif ( event.touches.length == 1 ) {\n\n\t\t\tpanStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );\n\n\t\t} else {\n\n\t\t\tvar x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );\n\t\t\tvar y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );\n\n\t\t\tpanStart.set( x, y );\n\n\t\t}\n\n\t}\n\n\tfunction handleTouchStartDolly( event ) {\n\n\t\tvar dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;\n\t\tvar dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;\n\n\t\tvar distance = Math.sqrt( dx * dx + dy * dy );\n\n\t\tdollyStart.set( 0, distance );\n\n\t}\n\n\tfunction handleTouchStartDollyPan( event ) {\n\n\t\tif ( scope.enableZoom ) handleTouchStartDolly( event );\n\n\t\tif ( scope.enablePan ) handleTouchStartPan( event );\n\n\t}\n\n\tfunction handleTouchStartDollyRotate( event ) {\n\n\t\tif ( scope.enableZoom ) handleTouchStartDolly( event );\n\n\t\tif ( scope.enableRotate ) handleTouchStartRotate( event );\n\n\t}\n\n\tfunction handleTouchMoveRotate( event ) {\n\n\t\tif ( event.touches.length == 1 ) {\n\n\t\t\trotateEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );\n\n\t\t} else {\n\n\t\t\tvar x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );\n\t\t\tvar y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );\n\n\t\t\trotateEnd.set( x, y );\n\n\t\t}\n\n\t\trotateDelta.subVectors( rotateEnd, rotateStart ).multiplyScalar( scope.rotateSpeed );\n\n\t\tvar element = scope.domElement;\n\n\t\trotateLeft( 2 * Math.PI * rotateDelta.x / element.clientHeight ); // yes, height\n\n\t\trotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight );\n\n\t\trotateStart.copy( rotateEnd );\n\n\t}\n\n\tfunction handleTouchMovePan( event ) {\n\n\t\tif ( event.touches.length == 1 ) {\n\n\t\t\tpanEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );\n\n\t\t} else {\n\n\t\t\tvar x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );\n\t\t\tvar y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );\n\n\t\t\tpanEnd.set( x, y );\n\n\t\t}\n\n\t\tpanDelta.subVectors( panEnd, panStart ).multiplyScalar( scope.panSpeed );\n\n\t\tpan( panDelta.x, panDelta.y );\n\n\t\tpanStart.copy( panEnd );\n\n\t}\n\n\tfunction handleTouchMoveDolly( event ) {\n\n\t\tvar dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;\n\t\tvar dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;\n\n\t\tvar distance = Math.sqrt( dx * dx + dy * dy );\n\n\t\tdollyEnd.set( 0, distance );\n\n\t\tdollyDelta.set( 0, Math.pow( dollyEnd.y / dollyStart.y, scope.zoomSpeed ) );\n\n\t\tdollyOut( dollyDelta.y );\n\n\t\tdollyStart.copy( dollyEnd );\n\n\t}\n\n\tfunction handleTouchMoveDollyPan( event ) {\n\n\t\tif ( scope.enableZoom ) handleTouchMoveDolly( event );\n\n\t\tif ( scope.enablePan ) handleTouchMovePan( event );\n\n\t}\n\n\tfunction handleTouchMoveDollyRotate( event ) {\n\n\t\tif ( scope.enableZoom ) handleTouchMoveDolly( event );\n\n\t\tif ( scope.enableRotate ) handleTouchMoveRotate( event );\n\n\t}\n\n\tfunction handleTouchEnd( /*event*/ ) {\n\n\t\t// no-op\n\n\t}\n\n\t//\n\t// event handlers - FSM: listen for events and reset state\n\t//\n\n\tfunction onPointerDown( event ) {\n\n\t\tif ( scope.enabled === false ) return;\n\n\t\tswitch ( event.pointerType ) {\n\n\t\t\tcase 'mouse':\n\t\t\tcase 'pen':\n\t\t\t\tonMouseDown( event );\n\t\t\t\tbreak;\n\n\t\t\t// TODO touch\n\n\t\t}\n\n\t}\n\n\tfunction onPointerMove( event ) {\n\n\t\tif ( scope.enabled === false ) return;\n\n\t\tswitch ( event.pointerType ) {\n\n\t\t\tcase 'mouse':\n\t\t\tcase 'pen':\n\t\t\t\tonMouseMove( event );\n\t\t\t\tbreak;\n\n\t\t\t// TODO touch\n\n\t\t}\n\n\t}\n\n\tfunction onPointerUp( event ) {\n\n\t\tswitch ( event.pointerType ) {\n\n\t\t\tcase 'mouse':\n\t\t\tcase 'pen':\n\t\t\t\tonMouseUp( event );\n\t\t\t\tbreak;\n\n\t\t\t// TODO touch\n\n\t\t}\n\n\t}\n\n\tfunction onMouseDown( event ) {\n\n\t\t// Prevent the browser from scrolling.\n\t\tevent.preventDefault();\n\n\t\t// Manually set the focus since calling preventDefault above\n\t\t// prevents the browser from setting it automatically.\n\n\t\tscope.domElement.focus ? scope.domElement.focus() : window.focus();\n\n\t\tvar mouseAction;\n\n\t\tswitch ( event.button ) {\n\n\t\t\tcase 0:\n\n\t\t\t\tmouseAction = scope.mouseButtons.LEFT;\n\t\t\t\tbreak;\n\n\t\t\tcase 1:\n\n\t\t\t\tmouseAction = scope.mouseButtons.MIDDLE;\n\t\t\t\tbreak;\n\n\t\t\tcase 2:\n\n\t\t\t\tmouseAction = scope.mouseButtons.RIGHT;\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\n\t\t\t\tmouseAction = - 1;\n\n\t\t}\n\n\t\tswitch ( mouseAction ) {\n\n\t\t\tcase MOUSE.DOLLY:\n\n\t\t\t\tif ( scope.enableZoom === false ) return;\n\n\t\t\t\thandleMouseDownDolly( event );\n\n\t\t\t\tstate = STATE.DOLLY;\n\n\t\t\t\tbreak;\n\n\t\t\tcase MOUSE.ROTATE:\n\n\t\t\t\tif ( event.ctrlKey || event.metaKey || event.shiftKey ) {\n\n\t\t\t\t\tif ( scope.enablePan === false ) return;\n\n\t\t\t\t\thandleMouseDownPan( event );\n\n\t\t\t\t\tstate = STATE.PAN;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tif ( scope.enableRotate === false ) return;\n\n\t\t\t\t\thandleMouseDownRotate( event );\n\n\t\t\t\t\tstate = STATE.ROTATE;\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tcase MOUSE.PAN:\n\n\t\t\t\tif ( event.ctrlKey || event.metaKey || event.shiftKey ) {\n\n\t\t\t\t\tif ( scope.enableRotate === false ) return;\n\n\t\t\t\t\thandleMouseDownRotate( event );\n\n\t\t\t\t\tstate = STATE.ROTATE;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tif ( scope.enablePan === false ) return;\n\n\t\t\t\t\thandleMouseDownPan( event );\n\n\t\t\t\t\tstate = STATE.PAN;\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\n\t\t\t\tstate = STATE.NONE;\n\n\t\t}\n\n\t\tif ( state !== STATE.NONE ) {\n\n\t\t\tscope.domElement.ownerDocument.addEventListener( 'pointermove', onPointerMove, false );\n\t\t\tscope.domElement.ownerDocument.addEventListener( 'pointerup', onPointerUp, false );\n\n\t\t\tscope.dispatchEvent( startEvent );\n\n\t\t}\n\n\t}\n\n\tfunction onMouseMove( event ) {\n\n\t\tif ( scope.enabled === false ) return;\n\n\t\tevent.preventDefault();\n\n\t\tswitch ( state ) {\n\n\t\t\tcase STATE.ROTATE:\n\n\t\t\t\tif ( scope.enableRotate === false ) return;\n\n\t\t\t\thandleMouseMoveRotate( event );\n\n\t\t\t\tbreak;\n\n\t\t\tcase STATE.DOLLY:\n\n\t\t\t\tif ( scope.enableZoom === false ) return;\n\n\t\t\t\thandleMouseMoveDolly( event );\n\n\t\t\t\tbreak;\n\n\t\t\tcase STATE.PAN:\n\n\t\t\t\tif ( scope.enablePan === false ) return;\n\n\t\t\t\thandleMouseMovePan( event );\n\n\t\t\t\tbreak;\n\n\t\t}\n\n\t}\n\n\tfunction onMouseUp( event ) {\n\n\t\tscope.domElement.ownerDocument.removeEventListener( 'pointermove', onPointerMove, false );\n\t\tscope.domElement.ownerDocument.removeEventListener( 'pointerup', onPointerUp, false );\n\n\t\tif ( scope.enabled === false ) return;\n\n\t\thandleMouseUp( event );\n\n\t\tscope.dispatchEvent( endEvent );\n\n\t\tstate = STATE.NONE;\n\n\t}\n\n\tfunction onMouseWheel( event ) {\n\n\t\tif ( scope.enabled === false || scope.enableZoom === false || ( state !== STATE.NONE && state !== STATE.ROTATE ) ) return;\n\n\t\tevent.preventDefault();\n\t\tevent.stopPropagation();\n\n\t\tscope.dispatchEvent( startEvent );\n\n\t\thandleMouseWheel( event );\n\n\t\tscope.dispatchEvent( endEvent );\n\n\t}\n\n\tfunction onKeyDown( event ) {\n\n\t\tif ( scope.enabled === false || scope.enableKeys === false || scope.enablePan === false ) return;\n\n\t\thandleKeyDown( event );\n\n\t}\n\n\tfunction onTouchStart( event ) {\n\n\t\tif ( scope.enabled === false ) return;\n\n\t\tevent.preventDefault(); // prevent scrolling\n\n\t\tswitch ( event.touches.length ) {\n\n\t\t\tcase 1:\n\n\t\t\t\tswitch ( scope.touches.ONE ) {\n\n\t\t\t\t\tcase TOUCH.ROTATE:\n\n\t\t\t\t\t\tif ( scope.enableRotate === false ) return;\n\n\t\t\t\t\t\thandleTouchStartRotate( event );\n\n\t\t\t\t\t\tstate = STATE.TOUCH_ROTATE;\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase TOUCH.PAN:\n\n\t\t\t\t\t\tif ( scope.enablePan === false ) return;\n\n\t\t\t\t\t\thandleTouchStartPan( event );\n\n\t\t\t\t\t\tstate = STATE.TOUCH_PAN;\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tdefault:\n\n\t\t\t\t\t\tstate = STATE.NONE;\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tcase 2:\n\n\t\t\t\tswitch ( scope.touches.TWO ) {\n\n\t\t\t\t\tcase TOUCH.DOLLY_PAN:\n\n\t\t\t\t\t\tif ( scope.enableZoom === false && scope.enablePan === false ) return;\n\n\t\t\t\t\t\thandleTouchStartDollyPan( event );\n\n\t\t\t\t\t\tstate = STATE.TOUCH_DOLLY_PAN;\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase TOUCH.DOLLY_ROTATE:\n\n\t\t\t\t\t\tif ( scope.enableZoom === false && scope.enableRotate === false ) return;\n\n\t\t\t\t\t\thandleTouchStartDollyRotate( event );\n\n\t\t\t\t\t\tstate = STATE.TOUCH_DOLLY_ROTATE;\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tdefault:\n\n\t\t\t\t\t\tstate = STATE.NONE;\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\n\t\t\t\tstate = STATE.NONE;\n\n\t\t}\n\n\t\tif ( state !== STATE.NONE ) {\n\n\t\t\tscope.dispatchEvent( startEvent );\n\n\t\t}\n\n\t}\n\n\tfunction onTouchMove( event ) {\n\n\t\tif ( scope.enabled === false ) return;\n\n\t\tevent.preventDefault(); // prevent scrolling\n\t\tevent.stopPropagation();\n\n\t\tswitch ( state ) {\n\n\t\t\tcase STATE.TOUCH_ROTATE:\n\n\t\t\t\tif ( scope.enableRotate === false ) return;\n\n\t\t\t\thandleTouchMoveRotate( event );\n\n\t\t\t\tscope.update();\n\n\t\t\t\tbreak;\n\n\t\t\tcase STATE.TOUCH_PAN:\n\n\t\t\t\tif ( scope.enablePan === false ) return;\n\n\t\t\t\thandleTouchMovePan( event );\n\n\t\t\t\tscope.update();\n\n\t\t\t\tbreak;\n\n\t\t\tcase STATE.TOUCH_DOLLY_PAN:\n\n\t\t\t\tif ( scope.enableZoom === false && scope.enablePan === false ) return;\n\n\t\t\t\thandleTouchMoveDollyPan( event );\n\n\t\t\t\tscope.update();\n\n\t\t\t\tbreak;\n\n\t\t\tcase STATE.TOUCH_DOLLY_ROTATE:\n\n\t\t\t\tif ( scope.enableZoom === false && scope.enableRotate === false ) return;\n\n\t\t\t\thandleTouchMoveDollyRotate( event );\n\n\t\t\t\tscope.update();\n\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\n\t\t\t\tstate = STATE.NONE;\n\n\t\t}\n\n\t}\n\n\tfunction onTouchEnd( event ) {\n\n\t\tif ( scope.enabled === false ) return;\n\n\t\thandleTouchEnd( event );\n\n\t\tscope.dispatchEvent( endEvent );\n\n\t\tstate = STATE.NONE;\n\n\t}\n\n\tfunction onContextMenu( event ) {\n\n\t\tif ( scope.enabled === false ) return;\n\n\t\tevent.preventDefault();\n\n\t}\n\n\t//\n\n\tscope.domElement.addEventListener( 'contextmenu', onContextMenu, false );\n\n\tscope.domElement.addEventListener( 'pointerdown', onPointerDown, false );\n\tscope.domElement.addEventListener( 'wheel', onMouseWheel, false );\n\n\tscope.domElement.addEventListener( 'touchstart', onTouchStart, false );\n\tscope.domElement.addEventListener( 'touchend', onTouchEnd, false );\n\tscope.domElement.addEventListener( 'touchmove', onTouchMove, false );\n\n\tscope.domElement.addEventListener( 'keydown', onKeyDown, false );\n\n\t// force an update at start\n\n\tthis.update();\n\n};\n\nOrbitControls.prototype = Object.create( EventDispatcher.prototype );\nOrbitControls.prototype.constructor = OrbitControls;\n\n\n// This set of controls performs orbiting, dollying (zooming), and panning.\n// Unlike TrackballControls, it maintains the \"up\" direction object.up (+Y by default).\n// This is very similar to OrbitControls, another set of touch behavior\n//\n//    Orbit - right mouse, or left mouse + ctrl/meta/shiftKey / touch: two-finger rotate\n//    Zoom - middle mouse, or mousewheel / touch: two-finger spread or squish\n//    Pan - left mouse, or arrow keys / touch: one-finger move\n\nvar MapControls = function ( object, domElement ) {\n\n\tOrbitControls.call( this, object, domElement );\n\n\tthis.screenSpacePanning = false; // pan orthogonal to world-space direction camera.up\n\n\tthis.mouseButtons.LEFT = MOUSE.PAN;\n\tthis.mouseButtons.RIGHT = MOUSE.ROTATE;\n\n\tthis.touches.ONE = TOUCH.PAN;\n\tthis.touches.TWO = TOUCH.DOLLY_ROTATE;\n\n};\n\nMapControls.prototype = Object.create( EventDispatcher.prototype );\nMapControls.prototype.constructor = MapControls;\n\nexport { OrbitControls, MapControls };\n","import {\n\tBoxBufferGeometry,\n\tBufferGeometry,\n\tColor,\n\tCylinderBufferGeometry,\n\tDoubleSide,\n\tEuler,\n\tFloat32BufferAttribute,\n\tLine,\n\tLineBasicMaterial,\n\tMatrix4,\n\tMesh,\n\tMeshBasicMaterial,\n\tObject3D,\n\tOctahedronBufferGeometry,\n\tPlaneBufferGeometry,\n\tQuaternion,\n\tRaycaster,\n\tSphereBufferGeometry,\n\tTorusBufferGeometry,\n\tVector3\n} from '../../../build/three.module.js';\n\nvar TransformControls = function ( camera, domElement ) {\n\n\tif ( domElement === undefined ) {\n\n\t\tconsole.warn( 'THREE.TransformControls: The second parameter \"domElement\" is now mandatory.' );\n\t\tdomElement = document;\n\n\t}\n\n\tObject3D.call( this );\n\n\tthis.visible = false;\n\tthis.domElement = domElement;\n\n\tvar _gizmo = new TransformControlsGizmo();\n\tthis.add( _gizmo );\n\n\tvar _plane = new TransformControlsPlane();\n\tthis.add( _plane );\n\n\tvar scope = this;\n\n\t// Define properties with getters/setter\n\t// Setting the defined property will automatically trigger change event\n\t// Defined properties are passed down to gizmo and plane\n\n\tdefineProperty( 'camera', camera );\n\tdefineProperty( 'object', undefined );\n\tdefineProperty( 'enabled', true );\n\tdefineProperty( 'axis', null );\n\tdefineProperty( 'mode', 'translate' );\n\tdefineProperty( 'translationSnap', null );\n\tdefineProperty( 'rotationSnap', null );\n\tdefineProperty( 'scaleSnap', null );\n\tdefineProperty( 'space', 'world' );\n\tdefineProperty( 'size', 1 );\n\tdefineProperty( 'dragging', false );\n\tdefineProperty( 'showX', true );\n\tdefineProperty( 'showY', true );\n\tdefineProperty( 'showZ', true );\n\n\tvar changeEvent = { type: 'change' };\n\tvar mouseDownEvent = { type: 'mouseDown' };\n\tvar mouseUpEvent = { type: 'mouseUp', mode: scope.mode };\n\tvar objectChangeEvent = { type: 'objectChange' };\n\n\t// Reusable utility variables\n\n\tvar raycaster = new Raycaster();\n\n\tfunction intersectObjectWithRay( object, raycaster, includeInvisible ) {\n\n\t\tvar allIntersections = raycaster.intersectObject( object, true );\n\n\t\tfor ( var i = 0; i < allIntersections.length; i ++ ) {\n\n\t\t\tif ( allIntersections[ i ].object.visible || includeInvisible ) {\n\n\t\t\t\treturn allIntersections[ i ];\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn false;\n\n\t}\n\n\tvar _tempVector = new Vector3();\n\tvar _tempVector2 = new Vector3();\n\tvar _tempQuaternion = new Quaternion();\n\tvar _unit = {\n\t\tX: new Vector3( 1, 0, 0 ),\n\t\tY: new Vector3( 0, 1, 0 ),\n\t\tZ: new Vector3( 0, 0, 1 )\n\t};\n\n\tvar pointStart = new Vector3();\n\tvar pointEnd = new Vector3();\n\tvar offset = new Vector3();\n\tvar rotationAxis = new Vector3();\n\tvar startNorm = new Vector3();\n\tvar endNorm = new Vector3();\n\tvar rotationAngle = 0;\n\n\tvar cameraPosition = new Vector3();\n\tvar cameraQuaternion = new Quaternion();\n\tvar cameraScale = new Vector3();\n\n\tvar parentPosition = new Vector3();\n\tvar parentQuaternion = new Quaternion();\n\tvar parentQuaternionInv = new Quaternion();\n\tvar parentScale = new Vector3();\n\n\tvar worldPositionStart = new Vector3();\n\tvar worldQuaternionStart = new Quaternion();\n\tvar worldScaleStart = new Vector3();\n\n\tvar worldPosition = new Vector3();\n\tvar worldQuaternion = new Quaternion();\n\tvar worldQuaternionInv = new Quaternion();\n\tvar worldScale = new Vector3();\n\n\tvar eye = new Vector3();\n\n\tvar positionStart = new Vector3();\n\tvar quaternionStart = new Quaternion();\n\tvar scaleStart = new Vector3();\n\n\t// TODO: remove properties unused in plane and gizmo\n\n\tdefineProperty( 'worldPosition', worldPosition );\n\tdefineProperty( 'worldPositionStart', worldPositionStart );\n\tdefineProperty( 'worldQuaternion', worldQuaternion );\n\tdefineProperty( 'worldQuaternionStart', worldQuaternionStart );\n\tdefineProperty( 'cameraPosition', cameraPosition );\n\tdefineProperty( 'cameraQuaternion', cameraQuaternion );\n\tdefineProperty( 'pointStart', pointStart );\n\tdefineProperty( 'pointEnd', pointEnd );\n\tdefineProperty( 'rotationAxis', rotationAxis );\n\tdefineProperty( 'rotationAngle', rotationAngle );\n\tdefineProperty( 'eye', eye );\n\n\t{\n\n\t\tdomElement.addEventListener( 'pointerdown', onPointerDown, false );\n\t\tdomElement.addEventListener( 'pointermove', onPointerHover, false );\n\t\tscope.domElement.ownerDocument.addEventListener( 'pointerup', onPointerUp, false );\n\n\t}\n\n\tthis.dispose = function () {\n\n\t\tdomElement.removeEventListener( 'pointerdown', onPointerDown );\n\t\tdomElement.removeEventListener( 'pointermove', onPointerHover );\n\t\tscope.domElement.ownerDocument.removeEventListener( 'pointermove', onPointerMove );\n\t\tscope.domElement.ownerDocument.removeEventListener( 'pointerup', onPointerUp );\n\n\t\tthis.traverse( function ( child ) {\n\n\t\t\tif ( child.geometry ) child.geometry.dispose();\n\t\t\tif ( child.material ) child.material.dispose();\n\n\t\t} );\n\n\t};\n\n\t// Set current object\n\tthis.attach = function ( object ) {\n\n\t\tthis.object = object;\n\t\tthis.visible = true;\n\n\t\treturn this;\n\n\t};\n\n\t// Detatch from object\n\tthis.detach = function () {\n\n\t\tthis.object = undefined;\n\t\tthis.visible = false;\n\t\tthis.axis = null;\n\n\t\treturn this;\n\n\t};\n\n\t// Defined getter, setter and store for a property\n\tfunction defineProperty( propName, defaultValue ) {\n\n\t\tvar propValue = defaultValue;\n\n\t\tObject.defineProperty( scope, propName, {\n\n\t\t\tget: function () {\n\n\t\t\t\treturn propValue !== undefined ? propValue : defaultValue;\n\n\t\t\t},\n\n\t\t\tset: function ( value ) {\n\n\t\t\t\tif ( propValue !== value ) {\n\n\t\t\t\t\tpropValue = value;\n\t\t\t\t\t_plane[ propName ] = value;\n\t\t\t\t\t_gizmo[ propName ] = value;\n\n\t\t\t\t\tscope.dispatchEvent( { type: propName + '-changed', value: value } );\n\t\t\t\t\tscope.dispatchEvent( changeEvent );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} );\n\n\t\tscope[ propName ] = defaultValue;\n\t\t_plane[ propName ] = defaultValue;\n\t\t_gizmo[ propName ] = defaultValue;\n\n\t}\n\n\t// updateMatrixWorld  updates key transformation variables\n\tthis.updateMatrixWorld = function () {\n\n\t\tif ( this.object !== undefined ) {\n\n\t\t\tthis.object.updateMatrixWorld();\n\n\t\t\tif ( this.object.parent === null ) {\n\n\t\t\t\tconsole.error( 'TransformControls: The attached 3D object must be a part of the scene graph.' );\n\n\t\t\t} else {\n\n\t\t\t\tthis.object.parent.matrixWorld.decompose( parentPosition, parentQuaternion, parentScale );\n\n\t\t\t}\n\n\t\t\tthis.object.matrixWorld.decompose( worldPosition, worldQuaternion, worldScale );\n\n\t\t\tparentQuaternionInv.copy( parentQuaternion ).invert();\n\t\t\tworldQuaternionInv.copy( worldQuaternion ).invert();\n\n\t\t}\n\n\t\tthis.camera.updateMatrixWorld();\n\t\tthis.camera.matrixWorld.decompose( cameraPosition, cameraQuaternion, cameraScale );\n\n\t\teye.copy( cameraPosition ).sub( worldPosition ).normalize();\n\n\t\tObject3D.prototype.updateMatrixWorld.call( this );\n\n\t};\n\n\tthis.pointerHover = function ( pointer ) {\n\n\t\tif ( this.object === undefined || this.dragging === true ) return;\n\n\t\traycaster.setFromCamera( pointer, this.camera );\n\n\t\tvar intersect = intersectObjectWithRay( _gizmo.picker[ this.mode ], raycaster );\n\n\t\tif ( intersect ) {\n\n\t\t\tthis.axis = intersect.object.name;\n\n\t\t} else {\n\n\t\t\tthis.axis = null;\n\n\t\t}\n\n\t};\n\n\tthis.pointerDown = function ( pointer ) {\n\n\t\tif ( this.object === undefined || this.dragging === true || pointer.button !== 0 ) return;\n\n\t\tif ( this.axis !== null ) {\n\n\t\t\traycaster.setFromCamera( pointer, this.camera );\n\n\t\t\tvar planeIntersect = intersectObjectWithRay( _plane, raycaster, true );\n\n\t\t\tif ( planeIntersect ) {\n\n\t\t\t\tvar space = this.space;\n\n\t\t\t\tif ( this.mode === 'scale' ) {\n\n\t\t\t\t\tspace = 'local';\n\n\t\t\t\t} else if ( this.axis === 'E' || this.axis === 'XYZE' || this.axis === 'XYZ' ) {\n\n\t\t\t\t\tspace = 'world';\n\n\t\t\t\t}\n\n\t\t\t\tif ( space === 'local' && this.mode === 'rotate' ) {\n\n\t\t\t\t\tvar snap = this.rotationSnap;\n\n\t\t\t\t\tif ( this.axis === 'X' && snap ) this.object.rotation.x = Math.round( this.object.rotation.x / snap ) * snap;\n\t\t\t\t\tif ( this.axis === 'Y' && snap ) this.object.rotation.y = Math.round( this.object.rotation.y / snap ) * snap;\n\t\t\t\t\tif ( this.axis === 'Z' && snap ) this.object.rotation.z = Math.round( this.object.rotation.z / snap ) * snap;\n\n\t\t\t\t}\n\n\t\t\t\tthis.object.updateMatrixWorld();\n\t\t\t\tthis.object.parent.updateMatrixWorld();\n\n\t\t\t\tpositionStart.copy( this.object.position );\n\t\t\t\tquaternionStart.copy( this.object.quaternion );\n\t\t\t\tscaleStart.copy( this.object.scale );\n\n\t\t\t\tthis.object.matrixWorld.decompose( worldPositionStart, worldQuaternionStart, worldScaleStart );\n\n\t\t\t\tpointStart.copy( planeIntersect.point ).sub( worldPositionStart );\n\n\t\t\t}\n\n\t\t\tthis.dragging = true;\n\t\t\tmouseDownEvent.mode = this.mode;\n\t\t\tthis.dispatchEvent( mouseDownEvent );\n\n\t\t}\n\n\t};\n\n\tthis.pointerMove = function ( pointer ) {\n\n\t\tvar axis = this.axis;\n\t\tvar mode = this.mode;\n\t\tvar object = this.object;\n\t\tvar space = this.space;\n\n\t\tif ( mode === 'scale' ) {\n\n\t\t\tspace = 'local';\n\n\t\t} else if ( axis === 'E' || axis === 'XYZE' || axis === 'XYZ' ) {\n\n\t\t\tspace = 'world';\n\n\t\t}\n\n\t\tif ( object === undefined || axis === null || this.dragging === false || pointer.button !== - 1 ) return;\n\n\t\traycaster.setFromCamera( pointer, this.camera );\n\n\t\tvar planeIntersect = intersectObjectWithRay( _plane, raycaster, true );\n\n\t\tif ( ! planeIntersect ) return;\n\n\t\tpointEnd.copy( planeIntersect.point ).sub( worldPositionStart );\n\n\t\tif ( mode === 'translate' ) {\n\n\t\t\t// Apply translate\n\n\t\t\toffset.copy( pointEnd ).sub( pointStart );\n\n\t\t\tif ( space === 'local' && axis !== 'XYZ' ) {\n\n\t\t\t\toffset.applyQuaternion( worldQuaternionInv );\n\n\t\t\t}\n\n\t\t\tif ( axis.indexOf( 'X' ) === - 1 ) offset.x = 0;\n\t\t\tif ( axis.indexOf( 'Y' ) === - 1 ) offset.y = 0;\n\t\t\tif ( axis.indexOf( 'Z' ) === - 1 ) offset.z = 0;\n\n\t\t\tif ( space === 'local' && axis !== 'XYZ' ) {\n\n\t\t\t\toffset.applyQuaternion( quaternionStart ).divide( parentScale );\n\n\t\t\t} else {\n\n\t\t\t\toffset.applyQuaternion( parentQuaternionInv ).divide( parentScale );\n\n\t\t\t}\n\n\t\t\tobject.position.copy( offset ).add( positionStart );\n\n\t\t\t// Apply translation snap\n\n\t\t\tif ( this.translationSnap ) {\n\n\t\t\t\tif ( space === 'local' ) {\n\n\t\t\t\t\tobject.position.applyQuaternion( _tempQuaternion.copy( quaternionStart ).invert() );\n\n\t\t\t\t\tif ( axis.search( 'X' ) !== - 1 ) {\n\n\t\t\t\t\t\tobject.position.x = Math.round( object.position.x / this.translationSnap ) * this.translationSnap;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( axis.search( 'Y' ) !== - 1 ) {\n\n\t\t\t\t\t\tobject.position.y = Math.round( object.position.y / this.translationSnap ) * this.translationSnap;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( axis.search( 'Z' ) !== - 1 ) {\n\n\t\t\t\t\t\tobject.position.z = Math.round( object.position.z / this.translationSnap ) * this.translationSnap;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tobject.position.applyQuaternion( quaternionStart );\n\n\t\t\t\t}\n\n\t\t\t\tif ( space === 'world' ) {\n\n\t\t\t\t\tif ( object.parent ) {\n\n\t\t\t\t\t\tobject.position.add( _tempVector.setFromMatrixPosition( object.parent.matrixWorld ) );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( axis.search( 'X' ) !== - 1 ) {\n\n\t\t\t\t\t\tobject.position.x = Math.round( object.position.x / this.translationSnap ) * this.translationSnap;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( axis.search( 'Y' ) !== - 1 ) {\n\n\t\t\t\t\t\tobject.position.y = Math.round( object.position.y / this.translationSnap ) * this.translationSnap;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( axis.search( 'Z' ) !== - 1 ) {\n\n\t\t\t\t\t\tobject.position.z = Math.round( object.position.z / this.translationSnap ) * this.translationSnap;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( object.parent ) {\n\n\t\t\t\t\t\tobject.position.sub( _tempVector.setFromMatrixPosition( object.parent.matrixWorld ) );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else if ( mode === 'scale' ) {\n\n\t\t\tif ( axis.search( 'XYZ' ) !== - 1 ) {\n\n\t\t\t\tvar d = pointEnd.length() / pointStart.length();\n\n\t\t\t\tif ( pointEnd.dot( pointStart ) < 0 ) d *= - 1;\n\n\t\t\t\t_tempVector2.set( d, d, d );\n\n\t\t\t} else {\n\n\t\t\t\t_tempVector.copy( pointStart );\n\t\t\t\t_tempVector2.copy( pointEnd );\n\n\t\t\t\t_tempVector.applyQuaternion( worldQuaternionInv );\n\t\t\t\t_tempVector2.applyQuaternion( worldQuaternionInv );\n\n\t\t\t\t_tempVector2.divide( _tempVector );\n\n\t\t\t\tif ( axis.search( 'X' ) === - 1 ) {\n\n\t\t\t\t\t_tempVector2.x = 1;\n\n\t\t\t\t}\n\n\t\t\t\tif ( axis.search( 'Y' ) === - 1 ) {\n\n\t\t\t\t\t_tempVector2.y = 1;\n\n\t\t\t\t}\n\n\t\t\t\tif ( axis.search( 'Z' ) === - 1 ) {\n\n\t\t\t\t\t_tempVector2.z = 1;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// Apply scale\n\n\t\t\tobject.scale.copy( scaleStart ).multiply( _tempVector2 );\n\n\t\t\tif ( this.scaleSnap ) {\n\n\t\t\t\tif ( axis.search( 'X' ) !== - 1 ) {\n\n\t\t\t\t\tobject.scale.x = Math.round( object.scale.x / this.scaleSnap ) * this.scaleSnap || this.scaleSnap;\n\n\t\t\t\t}\n\n\t\t\t\tif ( axis.search( 'Y' ) !== - 1 ) {\n\n\t\t\t\t\tobject.scale.y = Math.round( object.scale.y / this.scaleSnap ) * this.scaleSnap || this.scaleSnap;\n\n\t\t\t\t}\n\n\t\t\t\tif ( axis.search( 'Z' ) !== - 1 ) {\n\n\t\t\t\t\tobject.scale.z = Math.round( object.scale.z / this.scaleSnap ) * this.scaleSnap || this.scaleSnap;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else if ( mode === 'rotate' ) {\n\n\t\t\toffset.copy( pointEnd ).sub( pointStart );\n\n\t\t\tvar ROTATION_SPEED = 20 / worldPosition.distanceTo( _tempVector.setFromMatrixPosition( this.camera.matrixWorld ) );\n\n\t\t\tif ( axis === 'E' ) {\n\n\t\t\t\trotationAxis.copy( eye );\n\t\t\t\trotationAngle = pointEnd.angleTo( pointStart );\n\n\t\t\t\tstartNorm.copy( pointStart ).normalize();\n\t\t\t\tendNorm.copy( pointEnd ).normalize();\n\n\t\t\t\trotationAngle *= ( endNorm.cross( startNorm ).dot( eye ) < 0 ? 1 : - 1 );\n\n\t\t\t} else if ( axis === 'XYZE' ) {\n\n\t\t\t\trotationAxis.copy( offset ).cross( eye ).normalize();\n\t\t\t\trotationAngle = offset.dot( _tempVector.copy( rotationAxis ).cross( this.eye ) ) * ROTATION_SPEED;\n\n\t\t\t} else if ( axis === 'X' || axis === 'Y' || axis === 'Z' ) {\n\n\t\t\t\trotationAxis.copy( _unit[ axis ] );\n\n\t\t\t\t_tempVector.copy( _unit[ axis ] );\n\n\t\t\t\tif ( space === 'local' ) {\n\n\t\t\t\t\t_tempVector.applyQuaternion( worldQuaternion );\n\n\t\t\t\t}\n\n\t\t\t\trotationAngle = offset.dot( _tempVector.cross( eye ).normalize() ) * ROTATION_SPEED;\n\n\t\t\t}\n\n\t\t\t// Apply rotation snap\n\n\t\t\tif ( this.rotationSnap ) rotationAngle = Math.round( rotationAngle / this.rotationSnap ) * this.rotationSnap;\n\n\t\t\tthis.rotationAngle = rotationAngle;\n\n\t\t\t// Apply rotate\n\t\t\tif ( space === 'local' && axis !== 'E' && axis !== 'XYZE' ) {\n\n\t\t\t\tobject.quaternion.copy( quaternionStart );\n\t\t\t\tobject.quaternion.multiply( _tempQuaternion.setFromAxisAngle( rotationAxis, rotationAngle ) ).normalize();\n\n\t\t\t} else {\n\n\t\t\t\trotationAxis.applyQuaternion( parentQuaternionInv );\n\t\t\t\tobject.quaternion.copy( _tempQuaternion.setFromAxisAngle( rotationAxis, rotationAngle ) );\n\t\t\t\tobject.quaternion.multiply( quaternionStart ).normalize();\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis.dispatchEvent( changeEvent );\n\t\tthis.dispatchEvent( objectChangeEvent );\n\n\t};\n\n\tthis.pointerUp = function ( pointer ) {\n\n\t\tif ( pointer.button !== 0 ) return;\n\n\t\tif ( this.dragging && ( this.axis !== null ) ) {\n\n\t\t\tmouseUpEvent.mode = this.mode;\n\t\t\tthis.dispatchEvent( mouseUpEvent );\n\n\t\t}\n\n\t\tthis.dragging = false;\n\t\tthis.axis = null;\n\n\t};\n\n\t// normalize mouse / touch pointer and remap {x,y} to view space.\n\n\tfunction getPointer( event ) {\n\n\t\tif ( scope.domElement.ownerDocument.pointerLockElement ) {\n\n\t\t\treturn {\n\t\t\t\tx: 0,\n\t\t\t\ty: 0,\n\t\t\t\tbutton: event.button\n\t\t\t};\n\n\t\t} else {\n\n\t\t\tvar pointer = event.changedTouches ? event.changedTouches[ 0 ] : event;\n\n\t\t\tvar rect = domElement.getBoundingClientRect();\n\n\t\t\treturn {\n\t\t\t\tx: ( pointer.clientX - rect.left ) / rect.width * 2 - 1,\n\t\t\t\ty: - ( pointer.clientY - rect.top ) / rect.height * 2 + 1,\n\t\t\t\tbutton: event.button\n\t\t\t};\n\n\t\t}\n\n\t}\n\n\t// mouse / touch event handlers\n\n\tfunction onPointerHover( event ) {\n\n\t\tif ( ! scope.enabled ) return;\n\n\t\tswitch ( event.pointerType ) {\n\n\t\t\tcase 'mouse':\n\t\t\tcase 'pen':\n\t\t\t\tscope.pointerHover( getPointer( event ) );\n\t\t\t\tbreak;\n\n\t\t}\n\n\t}\n\n\tfunction onPointerDown( event ) {\n\n\t\tif ( ! scope.enabled ) return;\n\n\t\tscope.domElement.style.touchAction = 'none'; // disable touch scroll\n\t\tscope.domElement.ownerDocument.addEventListener( 'pointermove', onPointerMove, false );\n\n\t\tscope.pointerHover( getPointer( event ) );\n\t\tscope.pointerDown( getPointer( event ) );\n\n\t}\n\n\tfunction onPointerMove( event ) {\n\n\t\tif ( ! scope.enabled ) return;\n\n\t\tscope.pointerMove( getPointer( event ) );\n\n\t}\n\n\tfunction onPointerUp( event ) {\n\n\t\tif ( ! scope.enabled ) return;\n\n\t\tscope.domElement.style.touchAction = '';\n\t\tscope.domElement.ownerDocument.removeEventListener( 'pointermove', onPointerMove, false );\n\n\t\tscope.pointerUp( getPointer( event ) );\n\n\t}\n\n\t// TODO: deprecate\n\n\tthis.getMode = function () {\n\n\t\treturn scope.mode;\n\n\t};\n\n\tthis.setMode = function ( mode ) {\n\n\t\tscope.mode = mode;\n\n\t};\n\n\tthis.setTranslationSnap = function ( translationSnap ) {\n\n\t\tscope.translationSnap = translationSnap;\n\n\t};\n\n\tthis.setRotationSnap = function ( rotationSnap ) {\n\n\t\tscope.rotationSnap = rotationSnap;\n\n\t};\n\n\tthis.setScaleSnap = function ( scaleSnap ) {\n\n\t\tscope.scaleSnap = scaleSnap;\n\n\t};\n\n\tthis.setSize = function ( size ) {\n\n\t\tscope.size = size;\n\n\t};\n\n\tthis.setSpace = function ( space ) {\n\n\t\tscope.space = space;\n\n\t};\n\n\tthis.update = function () {\n\n\t\tconsole.warn( 'THREE.TransformControls: update function has no more functionality and therefore has been deprecated.' );\n\n\t};\n\n};\n\nTransformControls.prototype = Object.assign( Object.create( Object3D.prototype ), {\n\n\tconstructor: TransformControls,\n\n\tisTransformControls: true\n\n} );\n\n\nvar TransformControlsGizmo = function () {\n\n\t'use strict';\n\n\tObject3D.call( this );\n\n\tthis.type = 'TransformControlsGizmo';\n\n\t// shared materials\n\n\tvar gizmoMaterial = new MeshBasicMaterial( {\n\t\tdepthTest: false,\n\t\tdepthWrite: false,\n\t\ttransparent: true,\n\t\tside: DoubleSide,\n\t\tfog: false,\n\t\ttoneMapped: false\n\t} );\n\n\tvar gizmoLineMaterial = new LineBasicMaterial( {\n\t\tdepthTest: false,\n\t\tdepthWrite: false,\n\t\ttransparent: true,\n\t\tlinewidth: 1,\n\t\tfog: false,\n\t\ttoneMapped: false\n\t} );\n\n\t// Make unique material for each axis/color\n\n\tvar matInvisible = gizmoMaterial.clone();\n\tmatInvisible.opacity = 0.15;\n\n\tvar matHelper = gizmoMaterial.clone();\n\tmatHelper.opacity = 0.33;\n\n\tvar matRed = gizmoMaterial.clone();\n\tmatRed.color.set( 0xff0000 );\n\n\tvar matGreen = gizmoMaterial.clone();\n\tmatGreen.color.set( 0x00ff00 );\n\n\tvar matBlue = gizmoMaterial.clone();\n\tmatBlue.color.set( 0x0000ff );\n\n\tvar matWhiteTransparent = gizmoMaterial.clone();\n\tmatWhiteTransparent.opacity = 0.25;\n\n\tvar matYellowTransparent = matWhiteTransparent.clone();\n\tmatYellowTransparent.color.set( 0xffff00 );\n\n\tvar matCyanTransparent = matWhiteTransparent.clone();\n\tmatCyanTransparent.color.set( 0x00ffff );\n\n\tvar matMagentaTransparent = matWhiteTransparent.clone();\n\tmatMagentaTransparent.color.set( 0xff00ff );\n\n\tvar matYellow = gizmoMaterial.clone();\n\tmatYellow.color.set( 0xffff00 );\n\n\tvar matLineRed = gizmoLineMaterial.clone();\n\tmatLineRed.color.set( 0xff0000 );\n\n\tvar matLineGreen = gizmoLineMaterial.clone();\n\tmatLineGreen.color.set( 0x00ff00 );\n\n\tvar matLineBlue = gizmoLineMaterial.clone();\n\tmatLineBlue.color.set( 0x0000ff );\n\n\tvar matLineCyan = gizmoLineMaterial.clone();\n\tmatLineCyan.color.set( 0x00ffff );\n\n\tvar matLineMagenta = gizmoLineMaterial.clone();\n\tmatLineMagenta.color.set( 0xff00ff );\n\n\tvar matLineYellow = gizmoLineMaterial.clone();\n\tmatLineYellow.color.set( 0xffff00 );\n\n\tvar matLineGray = gizmoLineMaterial.clone();\n\tmatLineGray.color.set( 0x787878 );\n\n\tvar matLineYellowTransparent = matLineYellow.clone();\n\tmatLineYellowTransparent.opacity = 0.25;\n\n\t// reusable geometry\n\n\tvar arrowGeometry = new CylinderBufferGeometry( 0, 0.05, 0.2, 12, 1, false );\n\n\tvar scaleHandleGeometry = new BoxBufferGeometry( 0.125, 0.125, 0.125 );\n\n\tvar lineGeometry = new BufferGeometry();\n\tlineGeometry.setAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0,\t1, 0, 0 ], 3 ) );\n\n\tvar CircleGeometry = function ( radius, arc ) {\n\n\t\tvar geometry = new BufferGeometry( );\n\t\tvar vertices = [];\n\n\t\tfor ( var i = 0; i <= 64 * arc; ++ i ) {\n\n\t\t\tvertices.push( 0, Math.cos( i / 32 * Math.PI ) * radius, Math.sin( i / 32 * Math.PI ) * radius );\n\n\t\t}\n\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\n\t\treturn geometry;\n\n\t};\n\n\t// Special geometry for transform helper. If scaled with position vector it spans from [0,0,0] to position\n\n\tvar TranslateHelperGeometry = function () {\n\n\t\tvar geometry = new BufferGeometry();\n\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0, 1, 1, 1 ], 3 ) );\n\n\t\treturn geometry;\n\n\t};\n\n\t// Gizmo definitions - custom hierarchy definitions for setupGizmo() function\n\n\tvar gizmoTranslate = {\n\t\tX: [\n\t\t\t[ new Mesh( arrowGeometry, matRed ), [ 1, 0, 0 ], [ 0, 0, - Math.PI / 2 ], null, 'fwd' ],\n\t\t\t[ new Mesh( arrowGeometry, matRed ), [ 1, 0, 0 ], [ 0, 0, Math.PI / 2 ], null, 'bwd' ],\n\t\t\t[ new Line( lineGeometry, matLineRed ) ]\n\t\t],\n\t\tY: [\n\t\t\t[ new Mesh( arrowGeometry, matGreen ), [ 0, 1, 0 ], null, null, 'fwd' ],\n\t\t\t[ new Mesh( arrowGeometry, matGreen ), [ 0, 1, 0 ], [ Math.PI, 0, 0 ], null, 'bwd' ],\n\t\t\t[ new Line( lineGeometry, matLineGreen ), null, [ 0, 0, Math.PI / 2 ]]\n\t\t],\n\t\tZ: [\n\t\t\t[ new Mesh( arrowGeometry, matBlue ), [ 0, 0, 1 ], [ Math.PI / 2, 0, 0 ], null, 'fwd' ],\n\t\t\t[ new Mesh( arrowGeometry, matBlue ), [ 0, 0, 1 ], [ - Math.PI / 2, 0, 0 ], null, 'bwd' ],\n\t\t\t[ new Line( lineGeometry, matLineBlue ), null, [ 0, - Math.PI / 2, 0 ]]\n\t\t],\n\t\tXYZ: [\n\t\t\t[ new Mesh( new OctahedronBufferGeometry( 0.1, 0 ), matWhiteTransparent.clone() ), [ 0, 0, 0 ], [ 0, 0, 0 ]]\n\t\t],\n\t\tXY: [\n\t\t\t[ new Mesh( new PlaneBufferGeometry( 0.295, 0.295 ), matYellowTransparent.clone() ), [ 0.15, 0.15, 0 ]],\n\t\t\t[ new Line( lineGeometry, matLineYellow ), [ 0.18, 0.3, 0 ], null, [ 0.125, 1, 1 ]],\n\t\t\t[ new Line( lineGeometry, matLineYellow ), [ 0.3, 0.18, 0 ], [ 0, 0, Math.PI / 2 ], [ 0.125, 1, 1 ]]\n\t\t],\n\t\tYZ: [\n\t\t\t[ new Mesh( new PlaneBufferGeometry( 0.295, 0.295 ), matCyanTransparent.clone() ), [ 0, 0.15, 0.15 ], [ 0, Math.PI / 2, 0 ]],\n\t\t\t[ new Line( lineGeometry, matLineCyan ), [ 0, 0.18, 0.3 ], [ 0, 0, Math.PI / 2 ], [ 0.125, 1, 1 ]],\n\t\t\t[ new Line( lineGeometry, matLineCyan ), [ 0, 0.3, 0.18 ], [ 0, - Math.PI / 2, 0 ], [ 0.125, 1, 1 ]]\n\t\t],\n\t\tXZ: [\n\t\t\t[ new Mesh( new PlaneBufferGeometry( 0.295, 0.295 ), matMagentaTransparent.clone() ), [ 0.15, 0, 0.15 ], [ - Math.PI / 2, 0, 0 ]],\n\t\t\t[ new Line( lineGeometry, matLineMagenta ), [ 0.18, 0, 0.3 ], null, [ 0.125, 1, 1 ]],\n\t\t\t[ new Line( lineGeometry, matLineMagenta ), [ 0.3, 0, 0.18 ], [ 0, - Math.PI / 2, 0 ], [ 0.125, 1, 1 ]]\n\t\t]\n\t};\n\n\tvar pickerTranslate = {\n\t\tX: [\n\t\t\t[ new Mesh( new CylinderBufferGeometry( 0.2, 0, 1, 4, 1, false ), matInvisible ), [ 0.6, 0, 0 ], [ 0, 0, - Math.PI / 2 ]]\n\t\t],\n\t\tY: [\n\t\t\t[ new Mesh( new CylinderBufferGeometry( 0.2, 0, 1, 4, 1, false ), matInvisible ), [ 0, 0.6, 0 ]]\n\t\t],\n\t\tZ: [\n\t\t\t[ new Mesh( new CylinderBufferGeometry( 0.2, 0, 1, 4, 1, false ), matInvisible ), [ 0, 0, 0.6 ], [ Math.PI / 2, 0, 0 ]]\n\t\t],\n\t\tXYZ: [\n\t\t\t[ new Mesh( new OctahedronBufferGeometry( 0.2, 0 ), matInvisible ) ]\n\t\t],\n\t\tXY: [\n\t\t\t[ new Mesh( new PlaneBufferGeometry( 0.4, 0.4 ), matInvisible ), [ 0.2, 0.2, 0 ]]\n\t\t],\n\t\tYZ: [\n\t\t\t[ new Mesh( new PlaneBufferGeometry( 0.4, 0.4 ), matInvisible ), [ 0, 0.2, 0.2 ], [ 0, Math.PI / 2, 0 ]]\n\t\t],\n\t\tXZ: [\n\t\t\t[ new Mesh( new PlaneBufferGeometry( 0.4, 0.4 ), matInvisible ), [ 0.2, 0, 0.2 ], [ - Math.PI / 2, 0, 0 ]]\n\t\t]\n\t};\n\n\tvar helperTranslate = {\n\t\tSTART: [\n\t\t\t[ new Mesh( new OctahedronBufferGeometry( 0.01, 2 ), matHelper ), null, null, null, 'helper' ]\n\t\t],\n\t\tEND: [\n\t\t\t[ new Mesh( new OctahedronBufferGeometry( 0.01, 2 ), matHelper ), null, null, null, 'helper' ]\n\t\t],\n\t\tDELTA: [\n\t\t\t[ new Line( TranslateHelperGeometry(), matHelper ), null, null, null, 'helper' ]\n\t\t],\n\t\tX: [\n\t\t\t[ new Line( lineGeometry, matHelper.clone() ), [ - 1e3, 0, 0 ], null, [ 1e6, 1, 1 ], 'helper' ]\n\t\t],\n\t\tY: [\n\t\t\t[ new Line( lineGeometry, matHelper.clone() ), [ 0, - 1e3, 0 ], [ 0, 0, Math.PI / 2 ], [ 1e6, 1, 1 ], 'helper' ]\n\t\t],\n\t\tZ: [\n\t\t\t[ new Line( lineGeometry, matHelper.clone() ), [ 0, 0, - 1e3 ], [ 0, - Math.PI / 2, 0 ], [ 1e6, 1, 1 ], 'helper' ]\n\t\t]\n\t};\n\n\tvar gizmoRotate = {\n\t\tX: [\n\t\t\t[ new Line( CircleGeometry( 1, 0.5 ), matLineRed ) ],\n\t\t\t[ new Mesh( new OctahedronBufferGeometry( 0.04, 0 ), matRed ), [ 0, 0, 0.99 ], null, [ 1, 3, 1 ]],\n\t\t],\n\t\tY: [\n\t\t\t[ new Line( CircleGeometry( 1, 0.5 ), matLineGreen ), null, [ 0, 0, - Math.PI / 2 ]],\n\t\t\t[ new Mesh( new OctahedronBufferGeometry( 0.04, 0 ), matGreen ), [ 0, 0, 0.99 ], null, [ 3, 1, 1 ]],\n\t\t],\n\t\tZ: [\n\t\t\t[ new Line( CircleGeometry( 1, 0.5 ), matLineBlue ), null, [ 0, Math.PI / 2, 0 ]],\n\t\t\t[ new Mesh( new OctahedronBufferGeometry( 0.04, 0 ), matBlue ), [ 0.99, 0, 0 ], null, [ 1, 3, 1 ]],\n\t\t],\n\t\tE: [\n\t\t\t[ new Line( CircleGeometry( 1.25, 1 ), matLineYellowTransparent ), null, [ 0, Math.PI / 2, 0 ]],\n\t\t\t[ new Mesh( new CylinderBufferGeometry( 0.03, 0, 0.15, 4, 1, false ), matLineYellowTransparent ), [ 1.17, 0, 0 ], [ 0, 0, - Math.PI / 2 ], [ 1, 1, 0.001 ]],\n\t\t\t[ new Mesh( new CylinderBufferGeometry( 0.03, 0, 0.15, 4, 1, false ), matLineYellowTransparent ), [ - 1.17, 0, 0 ], [ 0, 0, Math.PI / 2 ], [ 1, 1, 0.001 ]],\n\t\t\t[ new Mesh( new CylinderBufferGeometry( 0.03, 0, 0.15, 4, 1, false ), matLineYellowTransparent ), [ 0, - 1.17, 0 ], [ Math.PI, 0, 0 ], [ 1, 1, 0.001 ]],\n\t\t\t[ new Mesh( new CylinderBufferGeometry( 0.03, 0, 0.15, 4, 1, false ), matLineYellowTransparent ), [ 0, 1.17, 0 ], [ 0, 0, 0 ], [ 1, 1, 0.001 ]],\n\t\t],\n\t\tXYZE: [\n\t\t\t[ new Line( CircleGeometry( 1, 1 ), matLineGray ), null, [ 0, Math.PI / 2, 0 ]]\n\t\t]\n\t};\n\n\tvar helperRotate = {\n\t\tAXIS: [\n\t\t\t[ new Line( lineGeometry, matHelper.clone() ), [ - 1e3, 0, 0 ], null, [ 1e6, 1, 1 ], 'helper' ]\n\t\t]\n\t};\n\n\tvar pickerRotate = {\n\t\tX: [\n\t\t\t[ new Mesh( new TorusBufferGeometry( 1, 0.1, 4, 24 ), matInvisible ), [ 0, 0, 0 ], [ 0, - Math.PI / 2, - Math.PI / 2 ]],\n\t\t],\n\t\tY: [\n\t\t\t[ new Mesh( new TorusBufferGeometry( 1, 0.1, 4, 24 ), matInvisible ), [ 0, 0, 0 ], [ Math.PI / 2, 0, 0 ]],\n\t\t],\n\t\tZ: [\n\t\t\t[ new Mesh( new TorusBufferGeometry( 1, 0.1, 4, 24 ), matInvisible ), [ 0, 0, 0 ], [ 0, 0, - Math.PI / 2 ]],\n\t\t],\n\t\tE: [\n\t\t\t[ new Mesh( new TorusBufferGeometry( 1.25, 0.1, 2, 24 ), matInvisible ) ]\n\t\t],\n\t\tXYZE: [\n\t\t\t[ new Mesh( new SphereBufferGeometry( 0.7, 10, 8 ), matInvisible ) ]\n\t\t]\n\t};\n\n\tvar gizmoScale = {\n\t\tX: [\n\t\t\t[ new Mesh( scaleHandleGeometry, matRed ), [ 0.8, 0, 0 ], [ 0, 0, - Math.PI / 2 ]],\n\t\t\t[ new Line( lineGeometry, matLineRed ), null, null, [ 0.8, 1, 1 ]]\n\t\t],\n\t\tY: [\n\t\t\t[ new Mesh( scaleHandleGeometry, matGreen ), [ 0, 0.8, 0 ]],\n\t\t\t[ new Line( lineGeometry, matLineGreen ), null, [ 0, 0, Math.PI / 2 ], [ 0.8, 1, 1 ]]\n\t\t],\n\t\tZ: [\n\t\t\t[ new Mesh( scaleHandleGeometry, matBlue ), [ 0, 0, 0.8 ], [ Math.PI / 2, 0, 0 ]],\n\t\t\t[ new Line( lineGeometry, matLineBlue ), null, [ 0, - Math.PI / 2, 0 ], [ 0.8, 1, 1 ]]\n\t\t],\n\t\tXY: [\n\t\t\t[ new Mesh( scaleHandleGeometry, matYellowTransparent ), [ 0.85, 0.85, 0 ], null, [ 2, 2, 0.2 ]],\n\t\t\t[ new Line( lineGeometry, matLineYellow ), [ 0.855, 0.98, 0 ], null, [ 0.125, 1, 1 ]],\n\t\t\t[ new Line( lineGeometry, matLineYellow ), [ 0.98, 0.855, 0 ], [ 0, 0, Math.PI / 2 ], [ 0.125, 1, 1 ]]\n\t\t],\n\t\tYZ: [\n\t\t\t[ new Mesh( scaleHandleGeometry, matCyanTransparent ), [ 0, 0.85, 0.85 ], null, [ 0.2, 2, 2 ]],\n\t\t\t[ new Line( lineGeometry, matLineCyan ), [ 0, 0.855, 0.98 ], [ 0, 0, Math.PI / 2 ], [ 0.125, 1, 1 ]],\n\t\t\t[ new Line( lineGeometry, matLineCyan ), [ 0, 0.98, 0.855 ], [ 0, - Math.PI / 2, 0 ], [ 0.125, 1, 1 ]]\n\t\t],\n\t\tXZ: [\n\t\t\t[ new Mesh( scaleHandleGeometry, matMagentaTransparent ), [ 0.85, 0, 0.85 ], null, [ 2, 0.2, 2 ]],\n\t\t\t[ new Line( lineGeometry, matLineMagenta ), [ 0.855, 0, 0.98 ], null, [ 0.125, 1, 1 ]],\n\t\t\t[ new Line( lineGeometry, matLineMagenta ), [ 0.98, 0, 0.855 ], [ 0, - Math.PI / 2, 0 ], [ 0.125, 1, 1 ]]\n\t\t],\n\t\tXYZX: [\n\t\t\t[ new Mesh( new BoxBufferGeometry( 0.125, 0.125, 0.125 ), matWhiteTransparent.clone() ), [ 1.1, 0, 0 ]],\n\t\t],\n\t\tXYZY: [\n\t\t\t[ new Mesh( new BoxBufferGeometry( 0.125, 0.125, 0.125 ), matWhiteTransparent.clone() ), [ 0, 1.1, 0 ]],\n\t\t],\n\t\tXYZZ: [\n\t\t\t[ new Mesh( new BoxBufferGeometry( 0.125, 0.125, 0.125 ), matWhiteTransparent.clone() ), [ 0, 0, 1.1 ]],\n\t\t]\n\t};\n\n\tvar pickerScale = {\n\t\tX: [\n\t\t\t[ new Mesh( new CylinderBufferGeometry( 0.2, 0, 0.8, 4, 1, false ), matInvisible ), [ 0.5, 0, 0 ], [ 0, 0, - Math.PI / 2 ]]\n\t\t],\n\t\tY: [\n\t\t\t[ new Mesh( new CylinderBufferGeometry( 0.2, 0, 0.8, 4, 1, false ), matInvisible ), [ 0, 0.5, 0 ]]\n\t\t],\n\t\tZ: [\n\t\t\t[ new Mesh( new CylinderBufferGeometry( 0.2, 0, 0.8, 4, 1, false ), matInvisible ), [ 0, 0, 0.5 ], [ Math.PI / 2, 0, 0 ]]\n\t\t],\n\t\tXY: [\n\t\t\t[ new Mesh( scaleHandleGeometry, matInvisible ), [ 0.85, 0.85, 0 ], null, [ 3, 3, 0.2 ]],\n\t\t],\n\t\tYZ: [\n\t\t\t[ new Mesh( scaleHandleGeometry, matInvisible ), [ 0, 0.85, 0.85 ], null, [ 0.2, 3, 3 ]],\n\t\t],\n\t\tXZ: [\n\t\t\t[ new Mesh( scaleHandleGeometry, matInvisible ), [ 0.85, 0, 0.85 ], null, [ 3, 0.2, 3 ]],\n\t\t],\n\t\tXYZX: [\n\t\t\t[ new Mesh( new BoxBufferGeometry( 0.2, 0.2, 0.2 ), matInvisible ), [ 1.1, 0, 0 ]],\n\t\t],\n\t\tXYZY: [\n\t\t\t[ new Mesh( new BoxBufferGeometry( 0.2, 0.2, 0.2 ), matInvisible ), [ 0, 1.1, 0 ]],\n\t\t],\n\t\tXYZZ: [\n\t\t\t[ new Mesh( new BoxBufferGeometry( 0.2, 0.2, 0.2 ), matInvisible ), [ 0, 0, 1.1 ]],\n\t\t]\n\t};\n\n\tvar helperScale = {\n\t\tX: [\n\t\t\t[ new Line( lineGeometry, matHelper.clone() ), [ - 1e3, 0, 0 ], null, [ 1e6, 1, 1 ], 'helper' ]\n\t\t],\n\t\tY: [\n\t\t\t[ new Line( lineGeometry, matHelper.clone() ), [ 0, - 1e3, 0 ], [ 0, 0, Math.PI / 2 ], [ 1e6, 1, 1 ], 'helper' ]\n\t\t],\n\t\tZ: [\n\t\t\t[ new Line( lineGeometry, matHelper.clone() ), [ 0, 0, - 1e3 ], [ 0, - Math.PI / 2, 0 ], [ 1e6, 1, 1 ], 'helper' ]\n\t\t]\n\t};\n\n\t// Creates an Object3D with gizmos described in custom hierarchy definition.\n\n\tvar setupGizmo = function ( gizmoMap ) {\n\n\t\tvar gizmo = new Object3D();\n\n\t\tfor ( var name in gizmoMap ) {\n\n\t\t\tfor ( var i = gizmoMap[ name ].length; i --; ) {\n\n\t\t\t\tvar object = gizmoMap[ name ][ i ][ 0 ].clone();\n\t\t\t\tvar position = gizmoMap[ name ][ i ][ 1 ];\n\t\t\t\tvar rotation = gizmoMap[ name ][ i ][ 2 ];\n\t\t\t\tvar scale = gizmoMap[ name ][ i ][ 3 ];\n\t\t\t\tvar tag = gizmoMap[ name ][ i ][ 4 ];\n\n\t\t\t\t// name and tag properties are essential for picking and updating logic.\n\t\t\t\tobject.name = name;\n\t\t\t\tobject.tag = tag;\n\n\t\t\t\tif ( position ) {\n\n\t\t\t\t\tobject.position.set( position[ 0 ], position[ 1 ], position[ 2 ] );\n\n\t\t\t\t}\n\n\t\t\t\tif ( rotation ) {\n\n\t\t\t\t\tobject.rotation.set( rotation[ 0 ], rotation[ 1 ], rotation[ 2 ] );\n\n\t\t\t\t}\n\n\t\t\t\tif ( scale ) {\n\n\t\t\t\t\tobject.scale.set( scale[ 0 ], scale[ 1 ], scale[ 2 ] );\n\n\t\t\t\t}\n\n\t\t\t\tobject.updateMatrix();\n\n\t\t\t\tvar tempGeometry = object.geometry.clone();\n\t\t\t\ttempGeometry.applyMatrix4( object.matrix );\n\t\t\t\tobject.geometry = tempGeometry;\n\t\t\t\tobject.renderOrder = Infinity;\n\n\t\t\t\tobject.position.set( 0, 0, 0 );\n\t\t\t\tobject.rotation.set( 0, 0, 0 );\n\t\t\t\tobject.scale.set( 1, 1, 1 );\n\n\t\t\t\tgizmo.add( object );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn gizmo;\n\n\t};\n\n\t// Reusable utility variables\n\n\tvar tempVector = new Vector3( 0, 0, 0 );\n\tvar tempEuler = new Euler();\n\tvar alignVector = new Vector3( 0, 1, 0 );\n\tvar zeroVector = new Vector3( 0, 0, 0 );\n\tvar lookAtMatrix = new Matrix4();\n\tvar tempQuaternion = new Quaternion();\n\tvar tempQuaternion2 = new Quaternion();\n\tvar identityQuaternion = new Quaternion();\n\n\tvar unitX = new Vector3( 1, 0, 0 );\n\tvar unitY = new Vector3( 0, 1, 0 );\n\tvar unitZ = new Vector3( 0, 0, 1 );\n\n\t// Gizmo creation\n\n\tthis.gizmo = {};\n\tthis.picker = {};\n\tthis.helper = {};\n\n\tthis.add( this.gizmo[ 'translate' ] = setupGizmo( gizmoTranslate ) );\n\tthis.add( this.gizmo[ 'rotate' ] = setupGizmo( gizmoRotate ) );\n\tthis.add( this.gizmo[ 'scale' ] = setupGizmo( gizmoScale ) );\n\tthis.add( this.picker[ 'translate' ] = setupGizmo( pickerTranslate ) );\n\tthis.add( this.picker[ 'rotate' ] = setupGizmo( pickerRotate ) );\n\tthis.add( this.picker[ 'scale' ] = setupGizmo( pickerScale ) );\n\tthis.add( this.helper[ 'translate' ] = setupGizmo( helperTranslate ) );\n\tthis.add( this.helper[ 'rotate' ] = setupGizmo( helperRotate ) );\n\tthis.add( this.helper[ 'scale' ] = setupGizmo( helperScale ) );\n\n\t// Pickers should be hidden always\n\n\tthis.picker[ 'translate' ].visible = false;\n\tthis.picker[ 'rotate' ].visible = false;\n\tthis.picker[ 'scale' ].visible = false;\n\n\t// updateMatrixWorld will update transformations and appearance of individual handles\n\n\tthis.updateMatrixWorld = function () {\n\n\t\tvar space = this.space;\n\n\t\tif ( this.mode === 'scale' ) space = 'local'; // scale always oriented to local rotation\n\n\t\tvar quaternion = space === 'local' ? this.worldQuaternion : identityQuaternion;\n\n\t\t// Show only gizmos for current transform mode\n\n\t\tthis.gizmo[ 'translate' ].visible = this.mode === 'translate';\n\t\tthis.gizmo[ 'rotate' ].visible = this.mode === 'rotate';\n\t\tthis.gizmo[ 'scale' ].visible = this.mode === 'scale';\n\n\t\tthis.helper[ 'translate' ].visible = this.mode === 'translate';\n\t\tthis.helper[ 'rotate' ].visible = this.mode === 'rotate';\n\t\tthis.helper[ 'scale' ].visible = this.mode === 'scale';\n\n\n\t\tvar handles = [];\n\t\thandles = handles.concat( this.picker[ this.mode ].children );\n\t\thandles = handles.concat( this.gizmo[ this.mode ].children );\n\t\thandles = handles.concat( this.helper[ this.mode ].children );\n\n\t\tfor ( var i = 0; i < handles.length; i ++ ) {\n\n\t\t\tvar handle = handles[ i ];\n\n\t\t\t// hide aligned to camera\n\n\t\t\thandle.visible = true;\n\t\t\thandle.rotation.set( 0, 0, 0 );\n\t\t\thandle.position.copy( this.worldPosition );\n\n\t\t\tvar factor;\n\n\t\t\tif ( this.camera.isOrthographicCamera ) {\n\n\t\t\t\tfactor = ( this.camera.top - this.camera.bottom ) / this.camera.zoom;\n\n\t\t\t} else {\n\n\t\t\t\tfactor = this.worldPosition.distanceTo( this.cameraPosition ) * Math.min( 1.9 * Math.tan( Math.PI * this.camera.fov / 360 ) / this.camera.zoom, 7 );\n\n\t\t\t}\n\n\t\t\thandle.scale.set( 1, 1, 1 ).multiplyScalar( factor * this.size / 7 );\n\n\t\t\t// TODO: simplify helpers and consider decoupling from gizmo\n\n\t\t\tif ( handle.tag === 'helper' ) {\n\n\t\t\t\thandle.visible = false;\n\n\t\t\t\tif ( handle.name === 'AXIS' ) {\n\n\t\t\t\t\thandle.position.copy( this.worldPositionStart );\n\t\t\t\t\thandle.visible = !! this.axis;\n\n\t\t\t\t\tif ( this.axis === 'X' ) {\n\n\t\t\t\t\t\ttempQuaternion.setFromEuler( tempEuler.set( 0, 0, 0 ) );\n\t\t\t\t\t\thandle.quaternion.copy( quaternion ).multiply( tempQuaternion );\n\n\t\t\t\t\t\tif ( Math.abs( alignVector.copy( unitX ).applyQuaternion( quaternion ).dot( this.eye ) ) > 0.9 ) {\n\n\t\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( this.axis === 'Y' ) {\n\n\t\t\t\t\t\ttempQuaternion.setFromEuler( tempEuler.set( 0, 0, Math.PI / 2 ) );\n\t\t\t\t\t\thandle.quaternion.copy( quaternion ).multiply( tempQuaternion );\n\n\t\t\t\t\t\tif ( Math.abs( alignVector.copy( unitY ).applyQuaternion( quaternion ).dot( this.eye ) ) > 0.9 ) {\n\n\t\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( this.axis === 'Z' ) {\n\n\t\t\t\t\t\ttempQuaternion.setFromEuler( tempEuler.set( 0, Math.PI / 2, 0 ) );\n\t\t\t\t\t\thandle.quaternion.copy( quaternion ).multiply( tempQuaternion );\n\n\t\t\t\t\t\tif ( Math.abs( alignVector.copy( unitZ ).applyQuaternion( quaternion ).dot( this.eye ) ) > 0.9 ) {\n\n\t\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( this.axis === 'XYZE' ) {\n\n\t\t\t\t\t\ttempQuaternion.setFromEuler( tempEuler.set( 0, Math.PI / 2, 0 ) );\n\t\t\t\t\t\talignVector.copy( this.rotationAxis );\n\t\t\t\t\t\thandle.quaternion.setFromRotationMatrix( lookAtMatrix.lookAt( zeroVector, alignVector, unitY ) );\n\t\t\t\t\t\thandle.quaternion.multiply( tempQuaternion );\n\t\t\t\t\t\thandle.visible = this.dragging;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( this.axis === 'E' ) {\n\n\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t}\n\n\n\t\t\t\t} else if ( handle.name === 'START' ) {\n\n\t\t\t\t\thandle.position.copy( this.worldPositionStart );\n\t\t\t\t\thandle.visible = this.dragging;\n\n\t\t\t\t} else if ( handle.name === 'END' ) {\n\n\t\t\t\t\thandle.position.copy( this.worldPosition );\n\t\t\t\t\thandle.visible = this.dragging;\n\n\t\t\t\t} else if ( handle.name === 'DELTA' ) {\n\n\t\t\t\t\thandle.position.copy( this.worldPositionStart );\n\t\t\t\t\thandle.quaternion.copy( this.worldQuaternionStart );\n\t\t\t\t\ttempVector.set( 1e-10, 1e-10, 1e-10 ).add( this.worldPositionStart ).sub( this.worldPosition ).multiplyScalar( - 1 );\n\t\t\t\t\ttempVector.applyQuaternion( this.worldQuaternionStart.clone().invert() );\n\t\t\t\t\thandle.scale.copy( tempVector );\n\t\t\t\t\thandle.visible = this.dragging;\n\n\t\t\t\t} else {\n\n\t\t\t\t\thandle.quaternion.copy( quaternion );\n\n\t\t\t\t\tif ( this.dragging ) {\n\n\t\t\t\t\t\thandle.position.copy( this.worldPositionStart );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\thandle.position.copy( this.worldPosition );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( this.axis ) {\n\n\t\t\t\t\t\thandle.visible = this.axis.search( handle.name ) !== - 1;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\t// If updating helper, skip rest of the loop\n\t\t\t\tcontinue;\n\n\t\t\t}\n\n\t\t\t// Align handles to current local or world rotation\n\n\t\t\thandle.quaternion.copy( quaternion );\n\n\t\t\tif ( this.mode === 'translate' || this.mode === 'scale' ) {\n\n\t\t\t\t// Hide translate and scale axis facing the camera\n\n\t\t\t\tvar AXIS_HIDE_TRESHOLD = 0.99;\n\t\t\t\tvar PLANE_HIDE_TRESHOLD = 0.2;\n\t\t\t\tvar AXIS_FLIP_TRESHOLD = 0.0;\n\n\n\t\t\t\tif ( handle.name === 'X' || handle.name === 'XYZX' ) {\n\n\t\t\t\t\tif ( Math.abs( alignVector.copy( unitX ).applyQuaternion( quaternion ).dot( this.eye ) ) > AXIS_HIDE_TRESHOLD ) {\n\n\t\t\t\t\t\thandle.scale.set( 1e-10, 1e-10, 1e-10 );\n\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tif ( handle.name === 'Y' || handle.name === 'XYZY' ) {\n\n\t\t\t\t\tif ( Math.abs( alignVector.copy( unitY ).applyQuaternion( quaternion ).dot( this.eye ) ) > AXIS_HIDE_TRESHOLD ) {\n\n\t\t\t\t\t\thandle.scale.set( 1e-10, 1e-10, 1e-10 );\n\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tif ( handle.name === 'Z' || handle.name === 'XYZZ' ) {\n\n\t\t\t\t\tif ( Math.abs( alignVector.copy( unitZ ).applyQuaternion( quaternion ).dot( this.eye ) ) > AXIS_HIDE_TRESHOLD ) {\n\n\t\t\t\t\t\thandle.scale.set( 1e-10, 1e-10, 1e-10 );\n\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tif ( handle.name === 'XY' ) {\n\n\t\t\t\t\tif ( Math.abs( alignVector.copy( unitZ ).applyQuaternion( quaternion ).dot( this.eye ) ) < PLANE_HIDE_TRESHOLD ) {\n\n\t\t\t\t\t\thandle.scale.set( 1e-10, 1e-10, 1e-10 );\n\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tif ( handle.name === 'YZ' ) {\n\n\t\t\t\t\tif ( Math.abs( alignVector.copy( unitX ).applyQuaternion( quaternion ).dot( this.eye ) ) < PLANE_HIDE_TRESHOLD ) {\n\n\t\t\t\t\t\thandle.scale.set( 1e-10, 1e-10, 1e-10 );\n\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tif ( handle.name === 'XZ' ) {\n\n\t\t\t\t\tif ( Math.abs( alignVector.copy( unitY ).applyQuaternion( quaternion ).dot( this.eye ) ) < PLANE_HIDE_TRESHOLD ) {\n\n\t\t\t\t\t\thandle.scale.set( 1e-10, 1e-10, 1e-10 );\n\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\t// Flip translate and scale axis ocluded behind another axis\n\n\t\t\t\tif ( handle.name.search( 'X' ) !== - 1 ) {\n\n\t\t\t\t\tif ( alignVector.copy( unitX ).applyQuaternion( quaternion ).dot( this.eye ) < AXIS_FLIP_TRESHOLD ) {\n\n\t\t\t\t\t\tif ( handle.tag === 'fwd' ) {\n\n\t\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\thandle.scale.x *= - 1;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t} else if ( handle.tag === 'bwd' ) {\n\n\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tif ( handle.name.search( 'Y' ) !== - 1 ) {\n\n\t\t\t\t\tif ( alignVector.copy( unitY ).applyQuaternion( quaternion ).dot( this.eye ) < AXIS_FLIP_TRESHOLD ) {\n\n\t\t\t\t\t\tif ( handle.tag === 'fwd' ) {\n\n\t\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\thandle.scale.y *= - 1;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t} else if ( handle.tag === 'bwd' ) {\n\n\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tif ( handle.name.search( 'Z' ) !== - 1 ) {\n\n\t\t\t\t\tif ( alignVector.copy( unitZ ).applyQuaternion( quaternion ).dot( this.eye ) < AXIS_FLIP_TRESHOLD ) {\n\n\t\t\t\t\t\tif ( handle.tag === 'fwd' ) {\n\n\t\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\thandle.scale.z *= - 1;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t} else if ( handle.tag === 'bwd' ) {\n\n\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t} else if ( this.mode === 'rotate' ) {\n\n\t\t\t\t// Align handles to current local or world rotation\n\n\t\t\t\ttempQuaternion2.copy( quaternion );\n\t\t\t\talignVector.copy( this.eye ).applyQuaternion( tempQuaternion.copy( quaternion ).invert() );\n\n\t\t\t\tif ( handle.name.search( 'E' ) !== - 1 ) {\n\n\t\t\t\t\thandle.quaternion.setFromRotationMatrix( lookAtMatrix.lookAt( this.eye, zeroVector, unitY ) );\n\n\t\t\t\t}\n\n\t\t\t\tif ( handle.name === 'X' ) {\n\n\t\t\t\t\ttempQuaternion.setFromAxisAngle( unitX, Math.atan2( - alignVector.y, alignVector.z ) );\n\t\t\t\t\ttempQuaternion.multiplyQuaternions( tempQuaternion2, tempQuaternion );\n\t\t\t\t\thandle.quaternion.copy( tempQuaternion );\n\n\t\t\t\t}\n\n\t\t\t\tif ( handle.name === 'Y' ) {\n\n\t\t\t\t\ttempQuaternion.setFromAxisAngle( unitY, Math.atan2( alignVector.x, alignVector.z ) );\n\t\t\t\t\ttempQuaternion.multiplyQuaternions( tempQuaternion2, tempQuaternion );\n\t\t\t\t\thandle.quaternion.copy( tempQuaternion );\n\n\t\t\t\t}\n\n\t\t\t\tif ( handle.name === 'Z' ) {\n\n\t\t\t\t\ttempQuaternion.setFromAxisAngle( unitZ, Math.atan2( alignVector.y, alignVector.x ) );\n\t\t\t\t\ttempQuaternion.multiplyQuaternions( tempQuaternion2, tempQuaternion );\n\t\t\t\t\thandle.quaternion.copy( tempQuaternion );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// Hide disabled axes\n\t\t\thandle.visible = handle.visible && ( handle.name.indexOf( 'X' ) === - 1 || this.showX );\n\t\t\thandle.visible = handle.visible && ( handle.name.indexOf( 'Y' ) === - 1 || this.showY );\n\t\t\thandle.visible = handle.visible && ( handle.name.indexOf( 'Z' ) === - 1 || this.showZ );\n\t\t\thandle.visible = handle.visible && ( handle.name.indexOf( 'E' ) === - 1 || ( this.showX && this.showY && this.showZ ) );\n\n\t\t\t// highlight selected axis\n\n\t\t\thandle.material._opacity = handle.material._opacity || handle.material.opacity;\n\t\t\thandle.material._color = handle.material._color || handle.material.color.clone();\n\n\t\t\thandle.material.color.copy( handle.material._color );\n\t\t\thandle.material.opacity = handle.material._opacity;\n\n\t\t\tif ( ! this.enabled ) {\n\n\t\t\t\thandle.material.opacity *= 0.5;\n\t\t\t\thandle.material.color.lerp( new Color( 1, 1, 1 ), 0.5 );\n\n\t\t\t} else if ( this.axis ) {\n\n\t\t\t\tif ( handle.name === this.axis ) {\n\n\t\t\t\t\thandle.material.opacity = 1.0;\n\t\t\t\t\thandle.material.color.lerp( new Color( 1, 1, 1 ), 0.5 );\n\n\t\t\t\t} else if ( this.axis.split( '' ).some( function ( a ) {\n\n\t\t\t\t\treturn handle.name === a;\n\n\t\t\t\t} ) ) {\n\n\t\t\t\t\thandle.material.opacity = 1.0;\n\t\t\t\t\thandle.material.color.lerp( new Color( 1, 1, 1 ), 0.5 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\thandle.material.opacity *= 0.25;\n\t\t\t\t\thandle.material.color.lerp( new Color( 1, 1, 1 ), 0.5 );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tObject3D.prototype.updateMatrixWorld.call( this );\n\n\t};\n\n};\n\nTransformControlsGizmo.prototype = Object.assign( Object.create( Object3D.prototype ), {\n\n\tconstructor: TransformControlsGizmo,\n\n\tisTransformControlsGizmo: true\n\n} );\n\n\nvar TransformControlsPlane = function () {\n\n\t'use strict';\n\n\tMesh.call( this,\n\t\tnew PlaneBufferGeometry( 100000, 100000, 2, 2 ),\n\t\tnew MeshBasicMaterial( { visible: false, wireframe: true, side: DoubleSide, transparent: true, opacity: 0.1, toneMapped: false } )\n\t);\n\n\tthis.type = 'TransformControlsPlane';\n\n\tvar unitX = new Vector3( 1, 0, 0 );\n\tvar unitY = new Vector3( 0, 1, 0 );\n\tvar unitZ = new Vector3( 0, 0, 1 );\n\n\tvar tempVector = new Vector3();\n\tvar dirVector = new Vector3();\n\tvar alignVector = new Vector3();\n\tvar tempMatrix = new Matrix4();\n\tvar identityQuaternion = new Quaternion();\n\n\tthis.updateMatrixWorld = function () {\n\n\t\tvar space = this.space;\n\n\t\tthis.position.copy( this.worldPosition );\n\n\t\tif ( this.mode === 'scale' ) space = 'local'; // scale always oriented to local rotation\n\n\t\tunitX.set( 1, 0, 0 ).applyQuaternion( space === 'local' ? this.worldQuaternion : identityQuaternion );\n\t\tunitY.set( 0, 1, 0 ).applyQuaternion( space === 'local' ? this.worldQuaternion : identityQuaternion );\n\t\tunitZ.set( 0, 0, 1 ).applyQuaternion( space === 'local' ? this.worldQuaternion : identityQuaternion );\n\n\t\t// Align the plane for current transform mode, axis and space.\n\n\t\talignVector.copy( unitY );\n\n\t\tswitch ( this.mode ) {\n\n\t\t\tcase 'translate':\n\t\t\tcase 'scale':\n\t\t\t\tswitch ( this.axis ) {\n\n\t\t\t\t\tcase 'X':\n\t\t\t\t\t\talignVector.copy( this.eye ).cross( unitX );\n\t\t\t\t\t\tdirVector.copy( unitX ).cross( alignVector );\n\t\t\t\t\t\tbreak;\n\t\t\t\t\tcase 'Y':\n\t\t\t\t\t\talignVector.copy( this.eye ).cross( unitY );\n\t\t\t\t\t\tdirVector.copy( unitY ).cross( alignVector );\n\t\t\t\t\t\tbreak;\n\t\t\t\t\tcase 'Z':\n\t\t\t\t\t\talignVector.copy( this.eye ).cross( unitZ );\n\t\t\t\t\t\tdirVector.copy( unitZ ).cross( alignVector );\n\t\t\t\t\t\tbreak;\n\t\t\t\t\tcase 'XY':\n\t\t\t\t\t\tdirVector.copy( unitZ );\n\t\t\t\t\t\tbreak;\n\t\t\t\t\tcase 'YZ':\n\t\t\t\t\t\tdirVector.copy( unitX );\n\t\t\t\t\t\tbreak;\n\t\t\t\t\tcase 'XZ':\n\t\t\t\t\t\talignVector.copy( unitZ );\n\t\t\t\t\t\tdirVector.copy( unitY );\n\t\t\t\t\t\tbreak;\n\t\t\t\t\tcase 'XYZ':\n\t\t\t\t\tcase 'E':\n\t\t\t\t\t\tdirVector.set( 0, 0, 0 );\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\t\t\tcase 'rotate':\n\t\t\tdefault:\n\t\t\t\t// special case for rotate\n\t\t\t\tdirVector.set( 0, 0, 0 );\n\n\t\t}\n\n\t\tif ( dirVector.length() === 0 ) {\n\n\t\t\t// If in rotate mode, make the plane parallel to camera\n\t\t\tthis.quaternion.copy( this.cameraQuaternion );\n\n\t\t} else {\n\n\t\t\ttempMatrix.lookAt( tempVector.set( 0, 0, 0 ), dirVector, alignVector );\n\n\t\t\tthis.quaternion.setFromRotationMatrix( tempMatrix );\n\n\t\t}\n\n\t\tObject3D.prototype.updateMatrixWorld.call( this );\n\n\t};\n\n};\n\nTransformControlsPlane.prototype = Object.assign( Object.create( Mesh.prototype ), {\n\n\tconstructor: TransformControlsPlane,\n\n\tisTransformControlsPlane: true\n\n} );\n\nexport { TransformControls, TransformControlsGizmo, TransformControlsPlane };\n","var Stats = function () {\n\n\tvar mode = 0;\n\n\tvar container = document.createElement( 'div' );\n\tcontainer.style.cssText = 'position:fixed;top:0;left:0;cursor:pointer;opacity:0.9;z-index:10000';\n\tcontainer.addEventListener( 'click', function ( event ) {\n\n\t\tevent.preventDefault();\n\t\tshowPanel( ++ mode % container.children.length );\n\n\t}, false );\n\n\t//\n\n\tfunction addPanel( panel ) {\n\n\t\tcontainer.appendChild( panel.dom );\n\t\treturn panel;\n\n\t}\n\n\tfunction showPanel( id ) {\n\n\t\tfor ( var i = 0; i < container.children.length; i ++ ) {\n\n\t\t\tcontainer.children[ i ].style.display = i === id ? 'block' : 'none';\n\n\t\t}\n\n\t\tmode = id;\n\n\t}\n\n\t//\n\n\tvar beginTime = ( performance || Date ).now(), prevTime = beginTime, frames = 0;\n\n\tvar fpsPanel = addPanel( new Stats.Panel( 'FPS', '#0ff', '#002' ) );\n\tvar msPanel = addPanel( new Stats.Panel( 'MS', '#0f0', '#020' ) );\n\n\tif ( self.performance && self.performance.memory ) {\n\n\t\tvar memPanel = addPanel( new Stats.Panel( 'MB', '#f08', '#201' ) );\n\n\t}\n\n\tshowPanel( 0 );\n\n\treturn {\n\n\t\tREVISION: 16,\n\n\t\tdom: container,\n\n\t\taddPanel: addPanel,\n\t\tshowPanel: showPanel,\n\n\t\tbegin: function () {\n\n\t\t\tbeginTime = ( performance || Date ).now();\n\n\t\t},\n\n\t\tend: function () {\n\n\t\t\tframes ++;\n\n\t\t\tvar time = ( performance || Date ).now();\n\n\t\t\tmsPanel.update( time - beginTime, 200 );\n\n\t\t\tif ( time >= prevTime + 1000 ) {\n\n\t\t\t\tfpsPanel.update( ( frames * 1000 ) / ( time - prevTime ), 100 );\n\n\t\t\t\tprevTime = time;\n\t\t\t\tframes = 0;\n\n\t\t\t\tif ( memPanel ) {\n\n\t\t\t\t\tvar memory = performance.memory;\n\t\t\t\t\tmemPanel.update( memory.usedJSHeapSize / 1048576, memory.jsHeapSizeLimit / 1048576 );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\treturn time;\n\n\t\t},\n\n\t\tupdate: function () {\n\n\t\t\tbeginTime = this.end();\n\n\t\t},\n\n\t\t// Backwards Compatibility\n\n\t\tdomElement: container,\n\t\tsetMode: showPanel\n\n\t};\n\n};\n\nStats.Panel = function ( name, fg, bg ) {\n\n\tvar min = Infinity, max = 0, round = Math.round;\n\tvar PR = round( window.devicePixelRatio || 1 );\n\n\tvar WIDTH = 80 * PR, HEIGHT = 48 * PR,\n\t\tTEXT_X = 3 * PR, TEXT_Y = 2 * PR,\n\t\tGRAPH_X = 3 * PR, GRAPH_Y = 15 * PR,\n\t\tGRAPH_WIDTH = 74 * PR, GRAPH_HEIGHT = 30 * PR;\n\n\tvar canvas = document.createElement( 'canvas' );\n\tcanvas.width = WIDTH;\n\tcanvas.height = HEIGHT;\n\tcanvas.style.cssText = 'width:80px;height:48px';\n\n\tvar context = canvas.getContext( '2d' );\n\tcontext.font = 'bold ' + ( 9 * PR ) + 'px Helvetica,Arial,sans-serif';\n\tcontext.textBaseline = 'top';\n\n\tcontext.fillStyle = bg;\n\tcontext.fillRect( 0, 0, WIDTH, HEIGHT );\n\n\tcontext.fillStyle = fg;\n\tcontext.fillText( name, TEXT_X, TEXT_Y );\n\tcontext.fillRect( GRAPH_X, GRAPH_Y, GRAPH_WIDTH, GRAPH_HEIGHT );\n\n\tcontext.fillStyle = bg;\n\tcontext.globalAlpha = 0.9;\n\tcontext.fillRect( GRAPH_X, GRAPH_Y, GRAPH_WIDTH, GRAPH_HEIGHT );\n\n\treturn {\n\n\t\tdom: canvas,\n\n\t\tupdate: function ( value, maxValue ) {\n\n\t\t\tmin = Math.min( min, value );\n\t\t\tmax = Math.max( max, value );\n\n\t\t\tcontext.fillStyle = bg;\n\t\t\tcontext.globalAlpha = 1;\n\t\t\tcontext.fillRect( 0, 0, WIDTH, GRAPH_Y );\n\t\t\tcontext.fillStyle = fg;\n\t\t\tcontext.fillText( round( value ) + ' ' + name + ' (' + round( min ) + '-' + round( max ) + ')', TEXT_X, TEXT_Y );\n\n\t\t\tcontext.drawImage( canvas, GRAPH_X + PR, GRAPH_Y, GRAPH_WIDTH - PR, GRAPH_HEIGHT, GRAPH_X, GRAPH_Y, GRAPH_WIDTH - PR, GRAPH_HEIGHT );\n\n\t\t\tcontext.fillRect( GRAPH_X + GRAPH_WIDTH - PR, GRAPH_Y, PR, GRAPH_HEIGHT );\n\n\t\t\tcontext.fillStyle = bg;\n\t\t\tcontext.globalAlpha = 0.9;\n\t\t\tcontext.fillRect( GRAPH_X + GRAPH_WIDTH - PR, GRAPH_Y, PR, round( ( 1 - ( value / maxValue ) ) * GRAPH_HEIGHT ) );\n\n\t\t}\n\n\t};\n\n};\n\nexport default Stats;\n","// Ported from Stefan Gustavson's java implementation\n// http://staffwww.itn.liu.se/~stegu/simplexnoise/simplexnoise.pdf\n// Read Stefan's excellent paper for details on how this code works.\n//\n// Sean McCullough banksean@gmail.com\n//\n// Added 4D noise\n\n/**\n * You can pass in a random number generator object if you like.\n * It is assumed to have a random() method.\n */\nvar SimplexNoise = function ( r ) {\n\n\tif ( r == undefined ) r = Math;\n\tthis.grad3 = [[ 1, 1, 0 ], [ - 1, 1, 0 ], [ 1, - 1, 0 ], [ - 1, - 1, 0 ],\n\t\t[ 1, 0, 1 ], [ - 1, 0, 1 ], [ 1, 0, - 1 ], [ - 1, 0, - 1 ],\n\t\t[ 0, 1, 1 ], [ 0, - 1, 1 ], [ 0, 1, - 1 ], [ 0, - 1, - 1 ]];\n\n\tthis.grad4 = [[ 0, 1, 1, 1 ], [ 0, 1, 1, - 1 ], [ 0, 1, - 1, 1 ], [ 0, 1, - 1, - 1 ],\n\t     [ 0, - 1, 1, 1 ], [ 0, - 1, 1, - 1 ], [ 0, - 1, - 1, 1 ], [ 0, - 1, - 1, - 1 ],\n\t     [ 1, 0, 1, 1 ], [ 1, 0, 1, - 1 ], [ 1, 0, - 1, 1 ], [ 1, 0, - 1, - 1 ],\n\t     [ - 1, 0, 1, 1 ], [ - 1, 0, 1, - 1 ], [ - 1, 0, - 1, 1 ], [ - 1, 0, - 1, - 1 ],\n\t     [ 1, 1, 0, 1 ], [ 1, 1, 0, - 1 ], [ 1, - 1, 0, 1 ], [ 1, - 1, 0, - 1 ],\n\t     [ - 1, 1, 0, 1 ], [ - 1, 1, 0, - 1 ], [ - 1, - 1, 0, 1 ], [ - 1, - 1, 0, - 1 ],\n\t     [ 1, 1, 1, 0 ], [ 1, 1, - 1, 0 ], [ 1, - 1, 1, 0 ], [ 1, - 1, - 1, 0 ],\n\t     [ - 1, 1, 1, 0 ], [ - 1, 1, - 1, 0 ], [ - 1, - 1, 1, 0 ], [ - 1, - 1, - 1, 0 ]];\n\n\tthis.p = [];\n\n\tfor ( var i = 0; i < 256; i ++ ) {\n\n\t\tthis.p[ i ] = Math.floor( r.random() * 256 );\n\n\t}\n\n\t// To remove the need for index wrapping, double the permutation table length\n\tthis.perm = [];\n\n\tfor ( var i = 0; i < 512; i ++ ) {\n\n\t\tthis.perm[ i ] = this.p[ i & 255 ];\n\n\t}\n\n\t// A lookup table to traverse the simplex around a given point in 4D.\n\t// Details can be found where this table is used, in the 4D noise method.\n\tthis.simplex = [\n\t\t[ 0, 1, 2, 3 ], [ 0, 1, 3, 2 ], [ 0, 0, 0, 0 ], [ 0, 2, 3, 1 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 1, 2, 3, 0 ],\n\t\t[ 0, 2, 1, 3 ], [ 0, 0, 0, 0 ], [ 0, 3, 1, 2 ], [ 0, 3, 2, 1 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 1, 3, 2, 0 ],\n\t\t[ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ],\n\t\t[ 1, 2, 0, 3 ], [ 0, 0, 0, 0 ], [ 1, 3, 0, 2 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 2, 3, 0, 1 ], [ 2, 3, 1, 0 ],\n\t\t[ 1, 0, 2, 3 ], [ 1, 0, 3, 2 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 2, 0, 3, 1 ], [ 0, 0, 0, 0 ], [ 2, 1, 3, 0 ],\n\t\t[ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ],\n\t\t[ 2, 0, 1, 3 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 3, 0, 1, 2 ], [ 3, 0, 2, 1 ], [ 0, 0, 0, 0 ], [ 3, 1, 2, 0 ],\n\t\t[ 2, 1, 0, 3 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 3, 1, 0, 2 ], [ 0, 0, 0, 0 ], [ 3, 2, 0, 1 ], [ 3, 2, 1, 0 ]];\n\n};\n\nSimplexNoise.prototype.dot = function ( g, x, y ) {\n\n\treturn g[ 0 ] * x + g[ 1 ] * y;\n\n};\n\nSimplexNoise.prototype.dot3 = function ( g, x, y, z ) {\n\n\treturn g[ 0 ] * x + g[ 1 ] * y + g[ 2 ] * z;\n\n};\n\nSimplexNoise.prototype.dot4 = function ( g, x, y, z, w ) {\n\n\treturn g[ 0 ] * x + g[ 1 ] * y + g[ 2 ] * z + g[ 3 ] * w;\n\n};\n\nSimplexNoise.prototype.noise = function ( xin, yin ) {\n\n\tvar n0, n1, n2; // Noise contributions from the three corners\n\t// Skew the input space to determine which simplex cell we're in\n\tvar F2 = 0.5 * ( Math.sqrt( 3.0 ) - 1.0 );\n\tvar s = ( xin + yin ) * F2; // Hairy factor for 2D\n\tvar i = Math.floor( xin + s );\n\tvar j = Math.floor( yin + s );\n\tvar G2 = ( 3.0 - Math.sqrt( 3.0 ) ) / 6.0;\n\tvar t = ( i + j ) * G2;\n\tvar X0 = i - t; // Unskew the cell origin back to (x,y) space\n\tvar Y0 = j - t;\n\tvar x0 = xin - X0; // The x,y distances from the cell origin\n\tvar y0 = yin - Y0;\n\t// For the 2D case, the simplex shape is an equilateral triangle.\n\t// Determine which simplex we are in.\n\tvar i1, j1; // Offsets for second (middle) corner of simplex in (i,j) coords\n\tif ( x0 > y0 ) {\n\n\t\ti1 = 1; j1 = 0;\n\n\t\t// lower triangle, XY order: (0,0)->(1,0)->(1,1)\n\n\t}\telse {\n\n\t\ti1 = 0; j1 = 1;\n\n\t} // upper triangle, YX order: (0,0)->(0,1)->(1,1)\n\n\t// A step of (1,0) in (i,j) means a step of (1-c,-c) in (x,y), and\n\t// a step of (0,1) in (i,j) means a step of (-c,1-c) in (x,y), where\n\t// c = (3-sqrt(3))/6\n\tvar x1 = x0 - i1 + G2; // Offsets for middle corner in (x,y) unskewed coords\n\tvar y1 = y0 - j1 + G2;\n\tvar x2 = x0 - 1.0 + 2.0 * G2; // Offsets for last corner in (x,y) unskewed coords\n\tvar y2 = y0 - 1.0 + 2.0 * G2;\n\t// Work out the hashed gradient indices of the three simplex corners\n\tvar ii = i & 255;\n\tvar jj = j & 255;\n\tvar gi0 = this.perm[ ii + this.perm[ jj ] ] % 12;\n\tvar gi1 = this.perm[ ii + i1 + this.perm[ jj + j1 ] ] % 12;\n\tvar gi2 = this.perm[ ii + 1 + this.perm[ jj + 1 ] ] % 12;\n\t// Calculate the contribution from the three corners\n\tvar t0 = 0.5 - x0 * x0 - y0 * y0;\n\tif ( t0 < 0 ) n0 = 0.0;\n\telse {\n\n\t\tt0 *= t0;\n\t\tn0 = t0 * t0 * this.dot( this.grad3[ gi0 ], x0, y0 ); // (x,y) of grad3 used for 2D gradient\n\n\t}\n\n\tvar t1 = 0.5 - x1 * x1 - y1 * y1;\n\tif ( t1 < 0 ) n1 = 0.0;\n\telse {\n\n\t\tt1 *= t1;\n\t\tn1 = t1 * t1 * this.dot( this.grad3[ gi1 ], x1, y1 );\n\n\t}\n\n\tvar t2 = 0.5 - x2 * x2 - y2 * y2;\n\tif ( t2 < 0 ) n2 = 0.0;\n\telse {\n\n\t\tt2 *= t2;\n\t\tn2 = t2 * t2 * this.dot( this.grad3[ gi2 ], x2, y2 );\n\n\t}\n\n\t// Add contributions from each corner to get the final noise value.\n\t// The result is scaled to return values in the interval [-1,1].\n\treturn 70.0 * ( n0 + n1 + n2 );\n\n};\n\n// 3D simplex noise\nSimplexNoise.prototype.noise3d = function ( xin, yin, zin ) {\n\n\tvar n0, n1, n2, n3; // Noise contributions from the four corners\n\t// Skew the input space to determine which simplex cell we're in\n\tvar F3 = 1.0 / 3.0;\n\tvar s = ( xin + yin + zin ) * F3; // Very nice and simple skew factor for 3D\n\tvar i = Math.floor( xin + s );\n\tvar j = Math.floor( yin + s );\n\tvar k = Math.floor( zin + s );\n\tvar G3 = 1.0 / 6.0; // Very nice and simple unskew factor, too\n\tvar t = ( i + j + k ) * G3;\n\tvar X0 = i - t; // Unskew the cell origin back to (x,y,z) space\n\tvar Y0 = j - t;\n\tvar Z0 = k - t;\n\tvar x0 = xin - X0; // The x,y,z distances from the cell origin\n\tvar y0 = yin - Y0;\n\tvar z0 = zin - Z0;\n\t// For the 3D case, the simplex shape is a slightly irregular tetrahedron.\n\t// Determine which simplex we are in.\n\tvar i1, j1, k1; // Offsets for second corner of simplex in (i,j,k) coords\n\tvar i2, j2, k2; // Offsets for third corner of simplex in (i,j,k) coords\n\tif ( x0 >= y0 ) {\n\n\t\tif ( y0 >= z0 ) {\n\n\t\t\ti1 = 1; j1 = 0; k1 = 0; i2 = 1; j2 = 1; k2 = 0;\n\n\t\t\t// X Y Z order\n\n\t\t} else if ( x0 >= z0 ) {\n\n\t\t\ti1 = 1; j1 = 0; k1 = 0; i2 = 1; j2 = 0; k2 = 1;\n\n\t\t\t// X Z Y order\n\n\t\t} else {\n\n\t\t\ti1 = 0; j1 = 0; k1 = 1; i2 = 1; j2 = 0; k2 = 1;\n\n\t\t} // Z X Y order\n\n\t} else { // x0<y0\n\n\t\tif ( y0 < z0 ) {\n\n\t\t\ti1 = 0; j1 = 0; k1 = 1; i2 = 0; j2 = 1; k2 = 1;\n\n\t\t\t// Z Y X order\n\n\t\t} else if ( x0 < z0 ) {\n\n\t\t\ti1 = 0; j1 = 1; k1 = 0; i2 = 0; j2 = 1; k2 = 1;\n\n\t\t\t// Y Z X order\n\n\t\t} else {\n\n\t\t\ti1 = 0; j1 = 1; k1 = 0; i2 = 1; j2 = 1; k2 = 0;\n\n\t\t} // Y X Z order\n\n\t}\n\n\t// A step of (1,0,0) in (i,j,k) means a step of (1-c,-c,-c) in (x,y,z),\n\t// a step of (0,1,0) in (i,j,k) means a step of (-c,1-c,-c) in (x,y,z), and\n\t// a step of (0,0,1) in (i,j,k) means a step of (-c,-c,1-c) in (x,y,z), where\n\t// c = 1/6.\n\tvar x1 = x0 - i1 + G3; // Offsets for second corner in (x,y,z) coords\n\tvar y1 = y0 - j1 + G3;\n\tvar z1 = z0 - k1 + G3;\n\tvar x2 = x0 - i2 + 2.0 * G3; // Offsets for third corner in (x,y,z) coords\n\tvar y2 = y0 - j2 + 2.0 * G3;\n\tvar z2 = z0 - k2 + 2.0 * G3;\n\tvar x3 = x0 - 1.0 + 3.0 * G3; // Offsets for last corner in (x,y,z) coords\n\tvar y3 = y0 - 1.0 + 3.0 * G3;\n\tvar z3 = z0 - 1.0 + 3.0 * G3;\n\t// Work out the hashed gradient indices of the four simplex corners\n\tvar ii = i & 255;\n\tvar jj = j & 255;\n\tvar kk = k & 255;\n\tvar gi0 = this.perm[ ii + this.perm[ jj + this.perm[ kk ] ] ] % 12;\n\tvar gi1 = this.perm[ ii + i1 + this.perm[ jj + j1 + this.perm[ kk + k1 ] ] ] % 12;\n\tvar gi2 = this.perm[ ii + i2 + this.perm[ jj + j2 + this.perm[ kk + k2 ] ] ] % 12;\n\tvar gi3 = this.perm[ ii + 1 + this.perm[ jj + 1 + this.perm[ kk + 1 ] ] ] % 12;\n\t// Calculate the contribution from the four corners\n\tvar t0 = 0.6 - x0 * x0 - y0 * y0 - z0 * z0;\n\tif ( t0 < 0 ) n0 = 0.0;\n\telse {\n\n\t\tt0 *= t0;\n\t\tn0 = t0 * t0 * this.dot3( this.grad3[ gi0 ], x0, y0, z0 );\n\n\t}\n\n\tvar t1 = 0.6 - x1 * x1 - y1 * y1 - z1 * z1;\n\tif ( t1 < 0 ) n1 = 0.0;\n\telse {\n\n\t\tt1 *= t1;\n\t\tn1 = t1 * t1 * this.dot3( this.grad3[ gi1 ], x1, y1, z1 );\n\n\t}\n\n\tvar t2 = 0.6 - x2 * x2 - y2 * y2 - z2 * z2;\n\tif ( t2 < 0 ) n2 = 0.0;\n\telse {\n\n\t\tt2 *= t2;\n\t\tn2 = t2 * t2 * this.dot3( this.grad3[ gi2 ], x2, y2, z2 );\n\n\t}\n\n\tvar t3 = 0.6 - x3 * x3 - y3 * y3 - z3 * z3;\n\tif ( t3 < 0 ) n3 = 0.0;\n\telse {\n\n\t\tt3 *= t3;\n\t\tn3 = t3 * t3 * this.dot3( this.grad3[ gi3 ], x3, y3, z3 );\n\n\t}\n\n\t// Add contributions from each corner to get the final noise value.\n\t// The result is scaled to stay just inside [-1,1]\n\treturn 32.0 * ( n0 + n1 + n2 + n3 );\n\n};\n\n// 4D simplex noise\nSimplexNoise.prototype.noise4d = function ( x, y, z, w ) {\n\n\t// For faster and easier lookups\n\tvar grad4 = this.grad4;\n\tvar simplex = this.simplex;\n\tvar perm = this.perm;\n\n\t// The skewing and unskewing factors are hairy again for the 4D case\n\tvar F4 = ( Math.sqrt( 5.0 ) - 1.0 ) / 4.0;\n\tvar G4 = ( 5.0 - Math.sqrt( 5.0 ) ) / 20.0;\n\tvar n0, n1, n2, n3, n4; // Noise contributions from the five corners\n\t// Skew the (x,y,z,w) space to determine which cell of 24 simplices we're in\n\tvar s = ( x + y + z + w ) * F4; // Factor for 4D skewing\n\tvar i = Math.floor( x + s );\n\tvar j = Math.floor( y + s );\n\tvar k = Math.floor( z + s );\n\tvar l = Math.floor( w + s );\n\tvar t = ( i + j + k + l ) * G4; // Factor for 4D unskewing\n\tvar X0 = i - t; // Unskew the cell origin back to (x,y,z,w) space\n\tvar Y0 = j - t;\n\tvar Z0 = k - t;\n\tvar W0 = l - t;\n\tvar x0 = x - X0; // The x,y,z,w distances from the cell origin\n\tvar y0 = y - Y0;\n\tvar z0 = z - Z0;\n\tvar w0 = w - W0;\n\n\t// For the 4D case, the simplex is a 4D shape I won't even try to describe.\n\t// To find out which of the 24 possible simplices we're in, we need to\n\t// determine the magnitude ordering of x0, y0, z0 and w0.\n\t// The method below is a good way of finding the ordering of x,y,z,w and\n\t// then find the correct traversal order for the simplex we’re in.\n\t// First, six pair-wise comparisons are performed between each possible pair\n\t// of the four coordinates, and the results are used to add up binary bits\n\t// for an integer index.\n\tvar c1 = ( x0 > y0 ) ? 32 : 0;\n\tvar c2 = ( x0 > z0 ) ? 16 : 0;\n\tvar c3 = ( y0 > z0 ) ? 8 : 0;\n\tvar c4 = ( x0 > w0 ) ? 4 : 0;\n\tvar c5 = ( y0 > w0 ) ? 2 : 0;\n\tvar c6 = ( z0 > w0 ) ? 1 : 0;\n\tvar c = c1 + c2 + c3 + c4 + c5 + c6;\n\tvar i1, j1, k1, l1; // The integer offsets for the second simplex corner\n\tvar i2, j2, k2, l2; // The integer offsets for the third simplex corner\n\tvar i3, j3, k3, l3; // The integer offsets for the fourth simplex corner\n\t// simplex[c] is a 4-vector with the numbers 0, 1, 2 and 3 in some order.\n\t// Many values of c will never occur, since e.g. x>y>z>w makes x<z, y<w and x<w\n\t// impossible. Only the 24 indices which have non-zero entries make any sense.\n\t// We use a thresholding to set the coordinates in turn from the largest magnitude.\n\t// The number 3 in the \"simplex\" array is at the position of the largest coordinate.\n\ti1 = simplex[ c ][ 0 ] >= 3 ? 1 : 0;\n\tj1 = simplex[ c ][ 1 ] >= 3 ? 1 : 0;\n\tk1 = simplex[ c ][ 2 ] >= 3 ? 1 : 0;\n\tl1 = simplex[ c ][ 3 ] >= 3 ? 1 : 0;\n\t// The number 2 in the \"simplex\" array is at the second largest coordinate.\n\ti2 = simplex[ c ][ 0 ] >= 2 ? 1 : 0;\n\tj2 = simplex[ c ][ 1 ] >= 2 ? 1 : 0; k2 = simplex[ c ][ 2 ] >= 2 ? 1 : 0;\n\tl2 = simplex[ c ][ 3 ] >= 2 ? 1 : 0;\n\t// The number 1 in the \"simplex\" array is at the second smallest coordinate.\n\ti3 = simplex[ c ][ 0 ] >= 1 ? 1 : 0;\n\tj3 = simplex[ c ][ 1 ] >= 1 ? 1 : 0;\n\tk3 = simplex[ c ][ 2 ] >= 1 ? 1 : 0;\n\tl3 = simplex[ c ][ 3 ] >= 1 ? 1 : 0;\n\t// The fifth corner has all coordinate offsets = 1, so no need to look that up.\n\tvar x1 = x0 - i1 + G4; // Offsets for second corner in (x,y,z,w) coords\n\tvar y1 = y0 - j1 + G4;\n\tvar z1 = z0 - k1 + G4;\n\tvar w1 = w0 - l1 + G4;\n\tvar x2 = x0 - i2 + 2.0 * G4; // Offsets for third corner in (x,y,z,w) coords\n\tvar y2 = y0 - j2 + 2.0 * G4;\n\tvar z2 = z0 - k2 + 2.0 * G4;\n\tvar w2 = w0 - l2 + 2.0 * G4;\n\tvar x3 = x0 - i3 + 3.0 * G4; // Offsets for fourth corner in (x,y,z,w) coords\n\tvar y3 = y0 - j3 + 3.0 * G4;\n\tvar z3 = z0 - k3 + 3.0 * G4;\n\tvar w3 = w0 - l3 + 3.0 * G4;\n\tvar x4 = x0 - 1.0 + 4.0 * G4; // Offsets for last corner in (x,y,z,w) coords\n\tvar y4 = y0 - 1.0 + 4.0 * G4;\n\tvar z4 = z0 - 1.0 + 4.0 * G4;\n\tvar w4 = w0 - 1.0 + 4.0 * G4;\n\t// Work out the hashed gradient indices of the five simplex corners\n\tvar ii = i & 255;\n\tvar jj = j & 255;\n\tvar kk = k & 255;\n\tvar ll = l & 255;\n\tvar gi0 = perm[ ii + perm[ jj + perm[ kk + perm[ ll ] ] ] ] % 32;\n\tvar gi1 = perm[ ii + i1 + perm[ jj + j1 + perm[ kk + k1 + perm[ ll + l1 ] ] ] ] % 32;\n\tvar gi2 = perm[ ii + i2 + perm[ jj + j2 + perm[ kk + k2 + perm[ ll + l2 ] ] ] ] % 32;\n\tvar gi3 = perm[ ii + i3 + perm[ jj + j3 + perm[ kk + k3 + perm[ ll + l3 ] ] ] ] % 32;\n\tvar gi4 = perm[ ii + 1 + perm[ jj + 1 + perm[ kk + 1 + perm[ ll + 1 ] ] ] ] % 32;\n\t// Calculate the contribution from the five corners\n\tvar t0 = 0.6 - x0 * x0 - y0 * y0 - z0 * z0 - w0 * w0;\n\tif ( t0 < 0 ) n0 = 0.0;\n\telse {\n\n\t\tt0 *= t0;\n\t\tn0 = t0 * t0 * this.dot4( grad4[ gi0 ], x0, y0, z0, w0 );\n\n\t}\n\n\tvar t1 = 0.6 - x1 * x1 - y1 * y1 - z1 * z1 - w1 * w1;\n\tif ( t1 < 0 ) n1 = 0.0;\n\telse {\n\n\t\tt1 *= t1;\n\t\tn1 = t1 * t1 * this.dot4( grad4[ gi1 ], x1, y1, z1, w1 );\n\n\t}\n\n\tvar t2 = 0.6 - x2 * x2 - y2 * y2 - z2 * z2 - w2 * w2;\n\tif ( t2 < 0 ) n2 = 0.0;\n\telse {\n\n\t\tt2 *= t2;\n\t\tn2 = t2 * t2 * this.dot4( grad4[ gi2 ], x2, y2, z2, w2 );\n\n\t}\n\n\tvar t3 = 0.6 - x3 * x3 - y3 * y3 - z3 * z3 - w3 * w3;\n\tif ( t3 < 0 ) n3 = 0.0;\n\telse {\n\n\t\tt3 *= t3;\n\t\tn3 = t3 * t3 * this.dot4( grad4[ gi3 ], x3, y3, z3, w3 );\n\n\t}\n\n\tvar t4 = 0.6 - x4 * x4 - y4 * y4 - z4 * z4 - w4 * w4;\n\tif ( t4 < 0 ) n4 = 0.0;\n\telse {\n\n\t\tt4 *= t4;\n\t\tn4 = t4 * t4 * this.dot4( grad4[ gi4 ], x4, y4, z4, w4 );\n\n\t}\n\n\t// Sum up and scale the result to cover the range [-1,1]\n\treturn 27.0 * ( n0 + n1 + n2 + n3 + n4 );\n\n};\n\nexport { SimplexNoise };\n","import {\n\tClock,\n\tLinearFilter,\n\tMesh,\n\tOrthographicCamera,\n\tPlaneBufferGeometry,\n\tRGBAFormat,\n\tVector2,\n\tWebGLRenderTarget\n} from '../../../build/three.module.js';\nimport { CopyShader } from '../shaders/CopyShader.js';\nimport { ShaderPass } from '../postprocessing/ShaderPass.js';\nimport { MaskPass } from '../postprocessing/MaskPass.js';\nimport { ClearMaskPass } from '../postprocessing/MaskPass.js';\n\nvar EffectComposer = function ( renderer, renderTarget ) {\n\n\tthis.renderer = renderer;\n\n\tif ( renderTarget === undefined ) {\n\n\t\tvar parameters = {\n\t\t\tminFilter: LinearFilter,\n\t\t\tmagFilter: LinearFilter,\n\t\t\tformat: RGBAFormat\n\t\t};\n\n\t\tvar size = renderer.getSize( new Vector2() );\n\t\tthis._pixelRatio = renderer.getPixelRatio();\n\t\tthis._width = size.width;\n\t\tthis._height = size.height;\n\n\t\trenderTarget = new WebGLRenderTarget( this._width * this._pixelRatio, this._height * this._pixelRatio, parameters );\n\t\trenderTarget.texture.name = 'EffectComposer.rt1';\n\n\t} else {\n\n\t\tthis._pixelRatio = 1;\n\t\tthis._width = renderTarget.width;\n\t\tthis._height = renderTarget.height;\n\n\t}\n\n\tthis.renderTarget1 = renderTarget;\n\tthis.renderTarget2 = renderTarget.clone();\n\tthis.renderTarget2.texture.name = 'EffectComposer.rt2';\n\n\tthis.writeBuffer = this.renderTarget1;\n\tthis.readBuffer = this.renderTarget2;\n\n\tthis.renderToScreen = true;\n\n\tthis.passes = [];\n\n\t// dependencies\n\n\tif ( CopyShader === undefined ) {\n\n\t\tconsole.error( 'THREE.EffectComposer relies on CopyShader' );\n\n\t}\n\n\tif ( ShaderPass === undefined ) {\n\n\t\tconsole.error( 'THREE.EffectComposer relies on ShaderPass' );\n\n\t}\n\n\tthis.copyPass = new ShaderPass( CopyShader );\n\n\tthis.clock = new Clock();\n\n};\n\nObject.assign( EffectComposer.prototype, {\n\n\tswapBuffers: function () {\n\n\t\tvar tmp = this.readBuffer;\n\t\tthis.readBuffer = this.writeBuffer;\n\t\tthis.writeBuffer = tmp;\n\n\t},\n\n\taddPass: function ( pass ) {\n\n\t\tthis.passes.push( pass );\n\t\tpass.setSize( this._width * this._pixelRatio, this._height * this._pixelRatio );\n\n\t},\n\n\tinsertPass: function ( pass, index ) {\n\n\t\tthis.passes.splice( index, 0, pass );\n\t\tpass.setSize( this._width * this._pixelRatio, this._height * this._pixelRatio );\n\n\t},\n\n\tremovePass: function ( pass ) {\n\n\t\tconst index = this.passes.indexOf( pass );\n\n\t\tif ( index !== - 1 ) {\n\n\t\t\tthis.passes.splice( index, 1 );\n\n\t\t}\n\n\t},\n\n\tisLastEnabledPass: function ( passIndex ) {\n\n\t\tfor ( var i = passIndex + 1; i < this.passes.length; i ++ ) {\n\n\t\t\tif ( this.passes[ i ].enabled ) {\n\n\t\t\t\treturn false;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn true;\n\n\t},\n\n\trender: function ( deltaTime ) {\n\n\t\t// deltaTime value is in seconds\n\n\t\tif ( deltaTime === undefined ) {\n\n\t\t\tdeltaTime = this.clock.getDelta();\n\n\t\t}\n\n\t\tvar currentRenderTarget = this.renderer.getRenderTarget();\n\n\t\tvar maskActive = false;\n\n\t\tvar pass, i, il = this.passes.length;\n\n\t\tfor ( i = 0; i < il; i ++ ) {\n\n\t\t\tpass = this.passes[ i ];\n\n\t\t\tif ( pass.enabled === false ) continue;\n\n\t\t\tpass.renderToScreen = ( this.renderToScreen && this.isLastEnabledPass( i ) );\n\t\t\tpass.render( this.renderer, this.writeBuffer, this.readBuffer, deltaTime, maskActive );\n\n\t\t\tif ( pass.needsSwap ) {\n\n\t\t\t\tif ( maskActive ) {\n\n\t\t\t\t\tvar context = this.renderer.getContext();\n\t\t\t\t\tvar stencil = this.renderer.state.buffers.stencil;\n\n\t\t\t\t\t//context.stencilFunc( context.NOTEQUAL, 1, 0xffffffff );\n\t\t\t\t\tstencil.setFunc( context.NOTEQUAL, 1, 0xffffffff );\n\n\t\t\t\t\tthis.copyPass.render( this.renderer, this.writeBuffer, this.readBuffer, deltaTime );\n\n\t\t\t\t\t//context.stencilFunc( context.EQUAL, 1, 0xffffffff );\n\t\t\t\t\tstencil.setFunc( context.EQUAL, 1, 0xffffffff );\n\n\t\t\t\t}\n\n\t\t\t\tthis.swapBuffers();\n\n\t\t\t}\n\n\t\t\tif ( MaskPass !== undefined ) {\n\n\t\t\t\tif ( pass instanceof MaskPass ) {\n\n\t\t\t\t\tmaskActive = true;\n\n\t\t\t\t} else if ( pass instanceof ClearMaskPass ) {\n\n\t\t\t\t\tmaskActive = false;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis.renderer.setRenderTarget( currentRenderTarget );\n\n\t},\n\n\treset: function ( renderTarget ) {\n\n\t\tif ( renderTarget === undefined ) {\n\n\t\t\tvar size = this.renderer.getSize( new Vector2() );\n\t\t\tthis._pixelRatio = this.renderer.getPixelRatio();\n\t\t\tthis._width = size.width;\n\t\t\tthis._height = size.height;\n\n\t\t\trenderTarget = this.renderTarget1.clone();\n\t\t\trenderTarget.setSize( this._width * this._pixelRatio, this._height * this._pixelRatio );\n\n\t\t}\n\n\t\tthis.renderTarget1.dispose();\n\t\tthis.renderTarget2.dispose();\n\t\tthis.renderTarget1 = renderTarget;\n\t\tthis.renderTarget2 = renderTarget.clone();\n\n\t\tthis.writeBuffer = this.renderTarget1;\n\t\tthis.readBuffer = this.renderTarget2;\n\n\t},\n\n\tsetSize: function ( width, height ) {\n\n\t\tthis._width = width;\n\t\tthis._height = height;\n\n\t\tvar effectiveWidth = this._width * this._pixelRatio;\n\t\tvar effectiveHeight = this._height * this._pixelRatio;\n\n\t\tthis.renderTarget1.setSize( effectiveWidth, effectiveHeight );\n\t\tthis.renderTarget2.setSize( effectiveWidth, effectiveHeight );\n\n\t\tfor ( var i = 0; i < this.passes.length; i ++ ) {\n\n\t\t\tthis.passes[ i ].setSize( effectiveWidth, effectiveHeight );\n\n\t\t}\n\n\t},\n\n\tsetPixelRatio: function ( pixelRatio ) {\n\n\t\tthis._pixelRatio = pixelRatio;\n\n\t\tthis.setSize( this._width, this._height );\n\n\t}\n\n} );\n\n\nvar Pass = function () {\n\n\t// if set to true, the pass is processed by the composer\n\tthis.enabled = true;\n\n\t// if set to true, the pass indicates to swap read and write buffer after rendering\n\tthis.needsSwap = true;\n\n\t// if set to true, the pass clears its buffer before rendering\n\tthis.clear = false;\n\n\t// if set to true, the result of the pass is rendered to screen. This is set automatically by EffectComposer.\n\tthis.renderToScreen = false;\n\n};\n\nObject.assign( Pass.prototype, {\n\n\tsetSize: function ( /* width, height */ ) {},\n\n\trender: function ( /* renderer, writeBuffer, readBuffer, deltaTime, maskActive */ ) {\n\n\t\tconsole.error( 'THREE.Pass: .render() must be implemented in derived pass.' );\n\n\t}\n\n} );\n\n// Helper for passes that need to fill the viewport with a single quad.\nPass.FullScreenQuad = ( function () {\n\n\tvar camera = new OrthographicCamera( - 1, 1, 1, - 1, 0, 1 );\n\tvar geometry = new PlaneBufferGeometry( 2, 2 );\n\n\tvar FullScreenQuad = function ( material ) {\n\n\t\tthis._mesh = new Mesh( geometry, material );\n\n\t};\n\n\tObject.defineProperty( FullScreenQuad.prototype, 'material', {\n\n\t\tget: function () {\n\n\t\t\treturn this._mesh.material;\n\n\t\t},\n\n\t\tset: function ( value ) {\n\n\t\t\tthis._mesh.material = value;\n\n\t\t}\n\n\t} );\n\n\tObject.assign( FullScreenQuad.prototype, {\n\n\t\tdispose: function () {\n\n\t\t\tthis._mesh.geometry.dispose();\n\n\t\t},\n\n\t\trender: function ( renderer ) {\n\n\t\t\trenderer.render( this._mesh, camera );\n\n\t\t}\n\n\t} );\n\n\treturn FullScreenQuad;\n\n} )();\n\nexport { EffectComposer, Pass };\n","import { Pass } from '../postprocessing/Pass.js';\n\nvar MaskPass = function ( scene, camera ) {\n\n\tPass.call( this );\n\n\tthis.scene = scene;\n\tthis.camera = camera;\n\n\tthis.clear = true;\n\tthis.needsSwap = false;\n\n\tthis.inverse = false;\n\n};\n\nMaskPass.prototype = Object.assign( Object.create( Pass.prototype ), {\n\n\tconstructor: MaskPass,\n\n\trender: function ( renderer, writeBuffer, readBuffer /*, deltaTime, maskActive */ ) {\n\n\t\tvar context = renderer.getContext();\n\t\tvar state = renderer.state;\n\n\t\t// don't update color or depth\n\n\t\tstate.buffers.color.setMask( false );\n\t\tstate.buffers.depth.setMask( false );\n\n\t\t// lock buffers\n\n\t\tstate.buffers.color.setLocked( true );\n\t\tstate.buffers.depth.setLocked( true );\n\n\t\t// set up stencil\n\n\t\tvar writeValue, clearValue;\n\n\t\tif ( this.inverse ) {\n\n\t\t\twriteValue = 0;\n\t\t\tclearValue = 1;\n\n\t\t} else {\n\n\t\t\twriteValue = 1;\n\t\t\tclearValue = 0;\n\n\t\t}\n\n\t\tstate.buffers.stencil.setTest( true );\n\t\tstate.buffers.stencil.setOp( context.REPLACE, context.REPLACE, context.REPLACE );\n\t\tstate.buffers.stencil.setFunc( context.ALWAYS, writeValue, 0xffffffff );\n\t\tstate.buffers.stencil.setClear( clearValue );\n\t\tstate.buffers.stencil.setLocked( true );\n\n\t\t// draw into the stencil buffer\n\n\t\trenderer.setRenderTarget( readBuffer );\n\t\tif ( this.clear ) renderer.clear();\n\t\trenderer.render( this.scene, this.camera );\n\n\t\trenderer.setRenderTarget( writeBuffer );\n\t\tif ( this.clear ) renderer.clear();\n\t\trenderer.render( this.scene, this.camera );\n\n\t\t// unlock color and depth buffer for subsequent rendering\n\n\t\tstate.buffers.color.setLocked( false );\n\t\tstate.buffers.depth.setLocked( false );\n\n\t\t// only render where stencil is set to 1\n\n\t\tstate.buffers.stencil.setLocked( false );\n\t\tstate.buffers.stencil.setFunc( context.EQUAL, 1, 0xffffffff ); // draw if == 1\n\t\tstate.buffers.stencil.setOp( context.KEEP, context.KEEP, context.KEEP );\n\t\tstate.buffers.stencil.setLocked( true );\n\n\t}\n\n} );\n\n\nvar ClearMaskPass = function () {\n\n\tPass.call( this );\n\n\tthis.needsSwap = false;\n\n};\n\nClearMaskPass.prototype = Object.create( Pass.prototype );\n\nObject.assign( ClearMaskPass.prototype, {\n\n\trender: function ( renderer /*, writeBuffer, readBuffer, deltaTime, maskActive */ ) {\n\n\t\trenderer.state.buffers.stencil.setLocked( false );\n\t\trenderer.state.buffers.stencil.setTest( false );\n\n\t}\n\n} );\n\nexport { MaskPass, ClearMaskPass };\n","import {\n\tOrthographicCamera,\n\tPlaneBufferGeometry,\n\tMesh\n} from '../../../build/three.module.js';\n\nfunction Pass() {\n\n\t// if set to true, the pass is processed by the composer\n\tthis.enabled = true;\n\n\t// if set to true, the pass indicates to swap read and write buffer after rendering\n\tthis.needsSwap = true;\n\n\t// if set to true, the pass clears its buffer before rendering\n\tthis.clear = false;\n\n\t// if set to true, the result of the pass is rendered to screen. This is set automatically by EffectComposer.\n\tthis.renderToScreen = false;\n\n}\n\nObject.assign( Pass.prototype, {\n\n\tsetSize: function ( /* width, height */ ) {},\n\n\trender: function ( /* renderer, writeBuffer, readBuffer, deltaTime, maskActive */ ) {\n\n\t\tconsole.error( 'THREE.Pass: .render() must be implemented in derived pass.' );\n\n\t}\n\n} );\n\n// Helper for passes that need to fill the viewport with a single quad.\n\n// Important: It's actually a hack to put FullScreenQuad into the Pass namespace. This is only\n// done to make examples/js code work. Normally, FullScreenQuad should be exported\n// from this module like Pass.\n\nPass.FullScreenQuad = ( function () {\n\n\tvar camera = new OrthographicCamera( - 1, 1, 1, - 1, 0, 1 );\n\tvar geometry = new PlaneBufferGeometry( 2, 2 );\n\n\tvar FullScreenQuad = function ( material ) {\n\n\t\tthis._mesh = new Mesh( geometry, material );\n\n\t};\n\n\tObject.defineProperty( FullScreenQuad.prototype, 'material', {\n\n\t\tget: function () {\n\n\t\t\treturn this._mesh.material;\n\n\t\t},\n\n\t\tset: function ( value ) {\n\n\t\t\tthis._mesh.material = value;\n\n\t\t}\n\n\t} );\n\n\tObject.assign( FullScreenQuad.prototype, {\n\n\t\tdispose: function () {\n\n\t\t\tthis._mesh.geometry.dispose();\n\n\t\t},\n\n\t\trender: function ( renderer ) {\n\n\t\t\trenderer.render( this._mesh, camera );\n\n\t\t}\n\n\t} );\n\n\treturn FullScreenQuad;\n\n} )();\n\nexport { Pass };\n","import {\n\tAddEquation,\n\tColor,\n\tCustomBlending,\n\tDataTexture,\n\tDepthTexture,\n\tDstAlphaFactor,\n\tDstColorFactor,\n\tFloatType,\n\tLinearFilter,\n\tMathUtils,\n\tMeshNormalMaterial,\n\tNearestFilter,\n\tNoBlending,\n\tRGBAFormat,\n\tRepeatWrapping,\n\tShaderMaterial,\n\tUniformsUtils,\n\tUnsignedShortType,\n\tVector3,\n\tWebGLRenderTarget,\n\tZeroFactor\n} from '../../../build/three.module.js';\nimport { Pass } from '../postprocessing/Pass.js';\nimport { SimplexNoise } from '../math/SimplexNoise.js';\nimport { SSAOShader } from '../shaders/SSAOShader.js';\nimport { SSAOBlurShader } from '../shaders/SSAOShader.js';\nimport { SSAODepthShader } from '../shaders/SSAOShader.js';\nimport { CopyShader } from '../shaders/CopyShader.js';\n\nvar SSAOPass = function ( scene, camera, width, height ) {\n\n\tPass.call( this );\n\n\tthis.width = ( width !== undefined ) ? width : 512;\n\tthis.height = ( height !== undefined ) ? height : 512;\n\n\tthis.clear = true;\n\n\tthis.camera = camera;\n\tthis.scene = scene;\n\n\tthis.kernelRadius = 8;\n\tthis.kernelSize = 32;\n\tthis.kernel = [];\n\tthis.noiseTexture = null;\n\tthis.output = 0;\n\n\tthis.minDistance = 0.005;\n\tthis.maxDistance = 0.1;\n\n\tthis._visibilityCache = new Map();\n\n\t//\n\n\tthis.generateSampleKernel();\n\tthis.generateRandomKernelRotations();\n\n\t// beauty render target\n\n\tvar depthTexture = new DepthTexture();\n\tdepthTexture.type = UnsignedShortType;\n\tdepthTexture.minFilter = NearestFilter;\n\tdepthTexture.maxFilter = NearestFilter;\n\n\tthis.beautyRenderTarget = new WebGLRenderTarget( this.width, this.height, {\n\t\tminFilter: LinearFilter,\n\t\tmagFilter: LinearFilter,\n\t\tformat: RGBAFormat\n\t} );\n\n\t// normal render target with depth buffer\n\n\tthis.normalRenderTarget = new WebGLRenderTarget( this.width, this.height, {\n\t\tminFilter: NearestFilter,\n\t\tmagFilter: NearestFilter,\n\t\tformat: RGBAFormat,\n\t\tdepthTexture: depthTexture\n\t} );\n\n\t// ssao render target\n\n\tthis.ssaoRenderTarget = new WebGLRenderTarget( this.width, this.height, {\n\t\tminFilter: LinearFilter,\n\t\tmagFilter: LinearFilter,\n\t\tformat: RGBAFormat\n\t} );\n\n\tthis.blurRenderTarget = this.ssaoRenderTarget.clone();\n\n\t// ssao material\n\n\tif ( SSAOShader === undefined ) {\n\n\t\tconsole.error( 'THREE.SSAOPass: The pass relies on SSAOShader.' );\n\n\t}\n\n\tthis.ssaoMaterial = new ShaderMaterial( {\n\t\tdefines: Object.assign( {}, SSAOShader.defines ),\n\t\tuniforms: UniformsUtils.clone( SSAOShader.uniforms ),\n\t\tvertexShader: SSAOShader.vertexShader,\n\t\tfragmentShader: SSAOShader.fragmentShader,\n\t\tblending: NoBlending\n\t} );\n\n\tthis.ssaoMaterial.uniforms[ 'tDiffuse' ].value = this.beautyRenderTarget.texture;\n\tthis.ssaoMaterial.uniforms[ 'tNormal' ].value = this.normalRenderTarget.texture;\n\tthis.ssaoMaterial.uniforms[ 'tDepth' ].value = this.normalRenderTarget.depthTexture;\n\tthis.ssaoMaterial.uniforms[ 'tNoise' ].value = this.noiseTexture;\n\tthis.ssaoMaterial.uniforms[ 'kernel' ].value = this.kernel;\n\tthis.ssaoMaterial.uniforms[ 'cameraNear' ].value = this.camera.near;\n\tthis.ssaoMaterial.uniforms[ 'cameraFar' ].value = this.camera.far;\n\tthis.ssaoMaterial.uniforms[ 'resolution' ].value.set( this.width, this.height );\n\tthis.ssaoMaterial.uniforms[ 'cameraProjectionMatrix' ].value.copy( this.camera.projectionMatrix );\n\tthis.ssaoMaterial.uniforms[ 'cameraInverseProjectionMatrix' ].value.copy( this.camera.projectionMatrixInverse );\n\n\t// normal material\n\n\tthis.normalMaterial = new MeshNormalMaterial();\n\tthis.normalMaterial.blending = NoBlending;\n\n\t// blur material\n\n\tthis.blurMaterial = new ShaderMaterial( {\n\t\tdefines: Object.assign( {}, SSAOBlurShader.defines ),\n\t\tuniforms: UniformsUtils.clone( SSAOBlurShader.uniforms ),\n\t\tvertexShader: SSAOBlurShader.vertexShader,\n\t\tfragmentShader: SSAOBlurShader.fragmentShader\n\t} );\n\tthis.blurMaterial.uniforms[ 'tDiffuse' ].value = this.ssaoRenderTarget.texture;\n\tthis.blurMaterial.uniforms[ 'resolution' ].value.set( this.width, this.height );\n\n\t// material for rendering the depth\n\n\tthis.depthRenderMaterial = new ShaderMaterial( {\n\t\tdefines: Object.assign( {}, SSAODepthShader.defines ),\n\t\tuniforms: UniformsUtils.clone( SSAODepthShader.uniforms ),\n\t\tvertexShader: SSAODepthShader.vertexShader,\n\t\tfragmentShader: SSAODepthShader.fragmentShader,\n\t\tblending: NoBlending\n\t} );\n\tthis.depthRenderMaterial.uniforms[ 'tDepth' ].value = this.normalRenderTarget.depthTexture;\n\tthis.depthRenderMaterial.uniforms[ 'cameraNear' ].value = this.camera.near;\n\tthis.depthRenderMaterial.uniforms[ 'cameraFar' ].value = this.camera.far;\n\n\t// material for rendering the content of a render target\n\n\tthis.copyMaterial = new ShaderMaterial( {\n\t\tuniforms: UniformsUtils.clone( CopyShader.uniforms ),\n\t\tvertexShader: CopyShader.vertexShader,\n\t\tfragmentShader: CopyShader.fragmentShader,\n\t\ttransparent: true,\n\t\tdepthTest: false,\n\t\tdepthWrite: false,\n\t\tblendSrc: DstColorFactor,\n\t\tblendDst: ZeroFactor,\n\t\tblendEquation: AddEquation,\n\t\tblendSrcAlpha: DstAlphaFactor,\n\t\tblendDstAlpha: ZeroFactor,\n\t\tblendEquationAlpha: AddEquation\n\t} );\n\n\tthis.fsQuad = new Pass.FullScreenQuad( null );\n\n\tthis.originalClearColor = new Color();\n\n};\n\nSSAOPass.prototype = Object.assign( Object.create( Pass.prototype ), {\n\n\tconstructor: SSAOPass,\n\n\tdispose: function () {\n\n\t\t// dispose render targets\n\n\t\tthis.beautyRenderTarget.dispose();\n\t\tthis.normalRenderTarget.dispose();\n\t\tthis.ssaoRenderTarget.dispose();\n\t\tthis.blurRenderTarget.dispose();\n\n\t\t// dispose materials\n\n\t\tthis.normalMaterial.dispose();\n\t\tthis.blurMaterial.dispose();\n\t\tthis.copyMaterial.dispose();\n\t\tthis.depthRenderMaterial.dispose();\n\n\t\t// dipsose full screen quad\n\n\t\tthis.fsQuad.dispose();\n\n\t},\n\n\trender: function ( renderer, writeBuffer /*, readBuffer, deltaTime, maskActive */ ) {\n\n\t\t// render beauty\n\n\t\trenderer.setRenderTarget( this.beautyRenderTarget );\n\t\trenderer.clear();\n\t\trenderer.render( this.scene, this.camera );\n\n\t\t// render normals and depth (honor only meshes, points and lines do not contribute to SSAO)\n\n\t\tthis.overrideVisibility();\n\t\tthis.renderOverride( renderer, this.normalMaterial, this.normalRenderTarget, 0x7777ff, 1.0 );\n\t\tthis.restoreVisibility();\n\n\t\t// render SSAO\n\n\t\tthis.ssaoMaterial.uniforms[ 'kernelRadius' ].value = this.kernelRadius;\n\t\tthis.ssaoMaterial.uniforms[ 'minDistance' ].value = this.minDistance;\n\t\tthis.ssaoMaterial.uniforms[ 'maxDistance' ].value = this.maxDistance;\n\t\tthis.renderPass( renderer, this.ssaoMaterial, this.ssaoRenderTarget );\n\n\t\t// render blur\n\n\t\tthis.renderPass( renderer, this.blurMaterial, this.blurRenderTarget );\n\n\t\t// output result to screen\n\n\t\tswitch ( this.output ) {\n\n\t\t\tcase SSAOPass.OUTPUT.SSAO:\n\n\t\t\t\tthis.copyMaterial.uniforms[ 'tDiffuse' ].value = this.ssaoRenderTarget.texture;\n\t\t\t\tthis.copyMaterial.blending = NoBlending;\n\t\t\t\tthis.renderPass( renderer, this.copyMaterial, this.renderToScreen ? null : writeBuffer );\n\n\t\t\t\tbreak;\n\n\t\t\tcase SSAOPass.OUTPUT.Blur:\n\n\t\t\t\tthis.copyMaterial.uniforms[ 'tDiffuse' ].value = this.blurRenderTarget.texture;\n\t\t\t\tthis.copyMaterial.blending = NoBlending;\n\t\t\t\tthis.renderPass( renderer, this.copyMaterial, this.renderToScreen ? null : writeBuffer );\n\n\t\t\t\tbreak;\n\n\t\t\tcase SSAOPass.OUTPUT.Beauty:\n\n\t\t\t\tthis.copyMaterial.uniforms[ 'tDiffuse' ].value = this.beautyRenderTarget.texture;\n\t\t\t\tthis.copyMaterial.blending = NoBlending;\n\t\t\t\tthis.renderPass( renderer, this.copyMaterial, this.renderToScreen ? null : writeBuffer );\n\n\t\t\t\tbreak;\n\n\t\t\tcase SSAOPass.OUTPUT.Depth:\n\n\t\t\t\tthis.renderPass( renderer, this.depthRenderMaterial, this.renderToScreen ? null : writeBuffer );\n\n\t\t\t\tbreak;\n\n\t\t\tcase SSAOPass.OUTPUT.Normal:\n\n\t\t\t\tthis.copyMaterial.uniforms[ 'tDiffuse' ].value = this.normalRenderTarget.texture;\n\t\t\t\tthis.copyMaterial.blending = NoBlending;\n\t\t\t\tthis.renderPass( renderer, this.copyMaterial, this.renderToScreen ? null : writeBuffer );\n\n\t\t\t\tbreak;\n\n\t\t\tcase SSAOPass.OUTPUT.Default:\n\n\t\t\t\tthis.copyMaterial.uniforms[ 'tDiffuse' ].value = this.beautyRenderTarget.texture;\n\t\t\t\tthis.copyMaterial.blending = NoBlending;\n\t\t\t\tthis.renderPass( renderer, this.copyMaterial, this.renderToScreen ? null : writeBuffer );\n\n\t\t\t\tthis.copyMaterial.uniforms[ 'tDiffuse' ].value = this.blurRenderTarget.texture;\n\t\t\t\tthis.copyMaterial.blending = CustomBlending;\n\t\t\t\tthis.renderPass( renderer, this.copyMaterial, this.renderToScreen ? null : writeBuffer );\n\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\t\t\t\tconsole.warn( 'THREE.SSAOPass: Unknown output type.' );\n\n\t\t}\n\n\t},\n\n\trenderPass: function ( renderer, passMaterial, renderTarget, clearColor, clearAlpha ) {\n\n\t\t// save original state\n\t\trenderer.getClearColor( this.originalClearColor );\n\t\tvar originalClearAlpha = renderer.getClearAlpha();\n\t\tvar originalAutoClear = renderer.autoClear;\n\n\t\trenderer.setRenderTarget( renderTarget );\n\n\t\t// setup pass state\n\t\trenderer.autoClear = false;\n\t\tif ( ( clearColor !== undefined ) && ( clearColor !== null ) ) {\n\n\t\t\trenderer.setClearColor( clearColor );\n\t\t\trenderer.setClearAlpha( clearAlpha || 0.0 );\n\t\t\trenderer.clear();\n\n\t\t}\n\n\t\tthis.fsQuad.material = passMaterial;\n\t\tthis.fsQuad.render( renderer );\n\n\t\t// restore original state\n\t\trenderer.autoClear = originalAutoClear;\n\t\trenderer.setClearColor( this.originalClearColor );\n\t\trenderer.setClearAlpha( originalClearAlpha );\n\n\t},\n\n\trenderOverride: function ( renderer, overrideMaterial, renderTarget, clearColor, clearAlpha ) {\n\n\t\trenderer.getClearColor( this.originalClearColor );\n\t\tvar originalClearAlpha = renderer.getClearAlpha();\n\t\tvar originalAutoClear = renderer.autoClear;\n\n\t\trenderer.setRenderTarget( renderTarget );\n\t\trenderer.autoClear = false;\n\n\t\tclearColor = overrideMaterial.clearColor || clearColor;\n\t\tclearAlpha = overrideMaterial.clearAlpha || clearAlpha;\n\n\t\tif ( ( clearColor !== undefined ) && ( clearColor !== null ) ) {\n\n\t\t\trenderer.setClearColor( clearColor );\n\t\t\trenderer.setClearAlpha( clearAlpha || 0.0 );\n\t\t\trenderer.clear();\n\n\t\t}\n\n\t\tthis.scene.overrideMaterial = overrideMaterial;\n\t\trenderer.render( this.scene, this.camera );\n\t\tthis.scene.overrideMaterial = null;\n\n\t\t// restore original state\n\n\t\trenderer.autoClear = originalAutoClear;\n\t\trenderer.setClearColor( this.originalClearColor );\n\t\trenderer.setClearAlpha( originalClearAlpha );\n\n\t},\n\n\tsetSize: function ( width, height ) {\n\n\t\tthis.width = width;\n\t\tthis.height = height;\n\n\t\tthis.beautyRenderTarget.setSize( width, height );\n\t\tthis.ssaoRenderTarget.setSize( width, height );\n\t\tthis.normalRenderTarget.setSize( width, height );\n\t\tthis.blurRenderTarget.setSize( width, height );\n\n\t\tthis.ssaoMaterial.uniforms[ 'resolution' ].value.set( width, height );\n\t\tthis.ssaoMaterial.uniforms[ 'cameraProjectionMatrix' ].value.copy( this.camera.projectionMatrix );\n\t\tthis.ssaoMaterial.uniforms[ 'cameraInverseProjectionMatrix' ].value.copy( this.camera.projectionMatrixInverse );\n\n\t\tthis.blurMaterial.uniforms[ 'resolution' ].value.set( width, height );\n\n\t},\n\n\tgenerateSampleKernel: function () {\n\n\t\tvar kernelSize = this.kernelSize;\n\t\tvar kernel = this.kernel;\n\n\t\tfor ( var i = 0; i < kernelSize; i ++ ) {\n\n\t\t\tvar sample = new Vector3();\n\t\t\tsample.x = ( Math.random() * 2 ) - 1;\n\t\t\tsample.y = ( Math.random() * 2 ) - 1;\n\t\t\tsample.z = Math.random();\n\n\t\t\tsample.normalize();\n\n\t\t\tvar scale = i / kernelSize;\n\t\t\tscale = MathUtils.lerp( 0.1, 1, scale * scale );\n\t\t\tsample.multiplyScalar( scale );\n\n\t\t\tkernel.push( sample );\n\n\t\t}\n\n\t},\n\n\tgenerateRandomKernelRotations: function () {\n\n\t\tvar width = 4, height = 4;\n\n\t\tif ( SimplexNoise === undefined ) {\n\n\t\t\tconsole.error( 'THREE.SSAOPass: The pass relies on SimplexNoise.' );\n\n\t\t}\n\n\t\tvar simplex = new SimplexNoise();\n\n\t\tvar size = width * height;\n\t\tvar data = new Float32Array( size * 4 );\n\n\t\tfor ( var i = 0; i < size; i ++ ) {\n\n\t\t\tvar stride = i * 4;\n\n\t\t\tvar x = ( Math.random() * 2 ) - 1;\n\t\t\tvar y = ( Math.random() * 2 ) - 1;\n\t\t\tvar z = 0;\n\n\t\t\tvar noise = simplex.noise3d( x, y, z );\n\n\t\t\tdata[ stride ] = noise;\n\t\t\tdata[ stride + 1 ] = noise;\n\t\t\tdata[ stride + 2 ] = noise;\n\t\t\tdata[ stride + 3 ] = 1;\n\n\t\t}\n\n\t\tthis.noiseTexture = new DataTexture( data, width, height, RGBAFormat, FloatType );\n\t\tthis.noiseTexture.wrapS = RepeatWrapping;\n\t\tthis.noiseTexture.wrapT = RepeatWrapping;\n\n\t},\n\n\toverrideVisibility: function () {\n\n\t\tvar scene = this.scene;\n\t\tvar cache = this._visibilityCache;\n\n\t\tscene.traverse( function ( object ) {\n\n\t\t\tcache.set( object, object.visible );\n\n\t\t\tif ( object.isPoints || object.isLine ) object.visible = false;\n\n\t\t} );\n\n\t},\n\n\trestoreVisibility: function () {\n\n\t\tvar scene = this.scene;\n\t\tvar cache = this._visibilityCache;\n\n\t\tscene.traverse( function ( object ) {\n\n\t\t\tvar visible = cache.get( object );\n\t\t\tobject.visible = visible;\n\n\t\t} );\n\n\t\tcache.clear();\n\n\t}\n\n} );\n\nSSAOPass.OUTPUT = {\n\t'Default': 0,\n\t'SSAO': 1,\n\t'Blur': 2,\n\t'Beauty': 3,\n\t'Depth': 4,\n\t'Normal': 5\n};\n\nexport { SSAOPass };\n","import {\n\tShaderMaterial,\n\tUniformsUtils\n} from '../../../build/three.module.js';\nimport { Pass } from '../postprocessing/Pass.js';\n\nvar ShaderPass = function ( shader, textureID ) {\n\n\tPass.call( this );\n\n\tthis.textureID = ( textureID !== undefined ) ? textureID : 'tDiffuse';\n\n\tif ( shader instanceof ShaderMaterial ) {\n\n\t\tthis.uniforms = shader.uniforms;\n\n\t\tthis.material = shader;\n\n\t} else if ( shader ) {\n\n\t\tthis.uniforms = UniformsUtils.clone( shader.uniforms );\n\n\t\tthis.material = new ShaderMaterial( {\n\n\t\t\tdefines: Object.assign( {}, shader.defines ),\n\t\t\tuniforms: this.uniforms,\n\t\t\tvertexShader: shader.vertexShader,\n\t\t\tfragmentShader: shader.fragmentShader\n\n\t\t} );\n\n\t}\n\n\tthis.fsQuad = new Pass.FullScreenQuad( this.material );\n\n};\n\nShaderPass.prototype = Object.assign( Object.create( Pass.prototype ), {\n\n\tconstructor: ShaderPass,\n\n\trender: function ( renderer, writeBuffer, readBuffer /*, deltaTime, maskActive */ ) {\n\n\t\tif ( this.uniforms[ this.textureID ] ) {\n\n\t\t\tthis.uniforms[ this.textureID ].value = readBuffer.texture;\n\n\t\t}\n\n\t\tthis.fsQuad.material = this.material;\n\n\t\tif ( this.renderToScreen ) {\n\n\t\t\trenderer.setRenderTarget( null );\n\t\t\tthis.fsQuad.render( renderer );\n\n\t\t} else {\n\n\t\t\trenderer.setRenderTarget( writeBuffer );\n\t\t\t// TODO: Avoid using autoClear properties, see https://github.com/mrdoob/three.js/pull/15571#issuecomment-465669600\n\t\t\tif ( this.clear ) renderer.clear( renderer.autoClearColor, renderer.autoClearDepth, renderer.autoClearStencil );\n\t\t\tthis.fsQuad.render( renderer );\n\n\t\t}\n\n\t}\n\n} );\n\nexport { ShaderPass };\n","/**\n * Full-screen textured quad shader\n */\n\nvar CopyShader = {\n\n\tuniforms: {\n\n\t\t'tDiffuse': { value: null },\n\t\t'opacity': { value: 1.0 }\n\n\t},\n\n\tvertexShader: [\n\n\t\t'varying vec2 vUv;',\n\n\t\t'void main() {',\n\n\t\t'\tvUv = uv;',\n\t\t'\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );',\n\n\t\t'}'\n\n\t].join( '\\n' ),\n\n\tfragmentShader: [\n\n\t\t'uniform float opacity;',\n\n\t\t'uniform sampler2D tDiffuse;',\n\n\t\t'varying vec2 vUv;',\n\n\t\t'void main() {',\n\n\t\t'\tvec4 texel = texture2D( tDiffuse, vUv );',\n\t\t'\tgl_FragColor = opacity * texel;',\n\n\t\t'}'\n\n\t].join( '\\n' )\n\n};\n\nexport { CopyShader };\n","import {\n\tMatrix4,\n\tVector2\n} from '../../../build/three.module.js';\n\n/**\n * References:\n * http://john-chapman-graphics.blogspot.com/2013/01/ssao-tutorial.html\n * https://learnopengl.com/Advanced-Lighting/SSAO\n * https://github.com/McNopper/OpenGL/blob/master/Example28/shader/ssao.frag.glsl\n */\n\nvar SSAOShader = {\n\n\tdefines: {\n\t\t'PERSPECTIVE_CAMERA': 1,\n\t\t'KERNEL_SIZE': 32\n\t},\n\n\tuniforms: {\n\n\t\t'tDiffuse': { value: null },\n\t\t'tNormal': { value: null },\n\t\t'tDepth': { value: null },\n\t\t'tNoise': { value: null },\n\t\t'kernel': { value: null },\n\t\t'cameraNear': { value: null },\n\t\t'cameraFar': { value: null },\n\t\t'resolution': { value: new Vector2() },\n\t\t'cameraProjectionMatrix': { value: new Matrix4() },\n\t\t'cameraInverseProjectionMatrix': { value: new Matrix4() },\n\t\t'kernelRadius': { value: 8 },\n\t\t'minDistance': { value: 0.005 },\n\t\t'maxDistance': { value: 0.05 },\n\n\t},\n\n\tvertexShader: [\n\n\t\t'varying vec2 vUv;',\n\n\t\t'void main() {',\n\n\t\t'\tvUv = uv;',\n\n\t\t'\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );',\n\n\t\t'}'\n\n\t].join( '\\n' ),\n\n\tfragmentShader: [\n\n\t\t'uniform sampler2D tDiffuse;',\n\t\t'uniform sampler2D tNormal;',\n\t\t'uniform sampler2D tDepth;',\n\t\t'uniform sampler2D tNoise;',\n\n\t\t'uniform vec3 kernel[ KERNEL_SIZE ];',\n\n\t\t'uniform vec2 resolution;',\n\n\t\t'uniform float cameraNear;',\n\t\t'uniform float cameraFar;',\n\t\t'uniform mat4 cameraProjectionMatrix;',\n\t\t'uniform mat4 cameraInverseProjectionMatrix;',\n\n\t\t'uniform float kernelRadius;',\n\t\t'uniform float minDistance;', // avoid artifacts caused by neighbour fragments with minimal depth difference\n\t\t'uniform float maxDistance;', // avoid the influence of fragments which are too far away\n\n\t\t'varying vec2 vUv;',\n\n\t\t'#include <packing>',\n\n\t\t'float getDepth( const in vec2 screenPosition ) {',\n\n\t\t'\treturn texture2D( tDepth, screenPosition ).x;',\n\n\t\t'}',\n\n\t\t'float getLinearDepth( const in vec2 screenPosition ) {',\n\n\t\t'\t#if PERSPECTIVE_CAMERA == 1',\n\n\t\t'\t\tfloat fragCoordZ = texture2D( tDepth, screenPosition ).x;',\n\t\t'\t\tfloat viewZ = perspectiveDepthToViewZ( fragCoordZ, cameraNear, cameraFar );',\n\t\t'\t\treturn viewZToOrthographicDepth( viewZ, cameraNear, cameraFar );',\n\n\t\t'\t#else',\n\n\t\t'\t\treturn texture2D( tDepth, screenPosition ).x;',\n\n\t\t'\t#endif',\n\n\t\t'}',\n\n\t\t'float getViewZ( const in float depth ) {',\n\n\t\t'\t#if PERSPECTIVE_CAMERA == 1',\n\n\t\t'\t\treturn perspectiveDepthToViewZ( depth, cameraNear, cameraFar );',\n\n\t\t'\t#else',\n\n\t\t'\t\treturn orthographicDepthToViewZ( depth, cameraNear, cameraFar );',\n\n\t\t'\t#endif',\n\n\t\t'}',\n\n\t\t'vec3 getViewPosition( const in vec2 screenPosition, const in float depth, const in float viewZ ) {',\n\n\t\t'\tfloat clipW = cameraProjectionMatrix[2][3] * viewZ + cameraProjectionMatrix[3][3];',\n\n\t\t'\tvec4 clipPosition = vec4( ( vec3( screenPosition, depth ) - 0.5 ) * 2.0, 1.0 );',\n\n\t\t'\tclipPosition *= clipW; // unprojection.',\n\n\t\t'\treturn ( cameraInverseProjectionMatrix * clipPosition ).xyz;',\n\n\t\t'}',\n\n\t\t'vec3 getViewNormal( const in vec2 screenPosition ) {',\n\n\t\t'\treturn unpackRGBToNormal( texture2D( tNormal, screenPosition ).xyz );',\n\n\t\t'}',\n\n\t\t'void main() {',\n\n\t\t'\tfloat depth = getDepth( vUv );',\n\t\t'\tfloat viewZ = getViewZ( depth );',\n\n\t\t'\tvec3 viewPosition = getViewPosition( vUv, depth, viewZ );',\n\t\t'\tvec3 viewNormal = getViewNormal( vUv );',\n\n\t\t' vec2 noiseScale = vec2( resolution.x / 4.0, resolution.y / 4.0 );',\n\t\t'\tvec3 random = texture2D( tNoise, vUv * noiseScale ).xyz;',\n\n\t\t// compute matrix used to reorient a kernel vector\n\n\t\t'\tvec3 tangent = normalize( random - viewNormal * dot( random, viewNormal ) );',\n\t\t'\tvec3 bitangent = cross( viewNormal, tangent );',\n\t\t'\tmat3 kernelMatrix = mat3( tangent, bitangent, viewNormal );',\n\n\t\t' float occlusion = 0.0;',\n\n\t\t' for ( int i = 0; i < KERNEL_SIZE; i ++ ) {',\n\n\t\t'\t\tvec3 sampleVector = kernelMatrix * kernel[ i ];', // reorient sample vector in view space\n\t\t'\t\tvec3 samplePoint = viewPosition + ( sampleVector * kernelRadius );', // calculate sample point\n\n\t\t'\t\tvec4 samplePointNDC = cameraProjectionMatrix * vec4( samplePoint, 1.0 );', // project point and calculate NDC\n\t\t'\t\tsamplePointNDC /= samplePointNDC.w;',\n\n\t\t'\t\tvec2 samplePointUv = samplePointNDC.xy * 0.5 + 0.5;', // compute uv coordinates\n\n\t\t'\t\tfloat realDepth = getLinearDepth( samplePointUv );', // get linear depth from depth texture\n\t\t'\t\tfloat sampleDepth = viewZToOrthographicDepth( samplePoint.z, cameraNear, cameraFar );', // compute linear depth of the sample view Z value\n\t\t'\t\tfloat delta = sampleDepth - realDepth;',\n\n\t\t'\t\tif ( delta > minDistance && delta < maxDistance ) {', // if fragment is before sample point, increase occlusion\n\n\t\t'\t\t\tocclusion += 1.0;',\n\n\t\t'\t\t}',\n\n\t\t'\t}',\n\n\t\t'\tocclusion = clamp( occlusion / float( KERNEL_SIZE ), 0.0, 1.0 );',\n\n\t\t'\tgl_FragColor = vec4( vec3( 1.0 - occlusion ), 1.0 );',\n\n\t\t'}'\n\n\t].join( '\\n' )\n\n};\n\nvar SSAODepthShader = {\n\n\tdefines: {\n\t\t'PERSPECTIVE_CAMERA': 1\n\t},\n\n\tuniforms: {\n\n\t\t'tDepth': { value: null },\n\t\t'cameraNear': { value: null },\n\t\t'cameraFar': { value: null },\n\n\t},\n\n\tvertexShader: [\n\n\t\t'varying vec2 vUv;',\n\n\t\t'void main() {',\n\n\t\t'\tvUv = uv;',\n\t\t'\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );',\n\n\t\t'}'\n\n\t].join( '\\n' ),\n\n\tfragmentShader: [\n\n\t\t'uniform sampler2D tDepth;',\n\n\t\t'uniform float cameraNear;',\n\t\t'uniform float cameraFar;',\n\n\t\t'varying vec2 vUv;',\n\n\t\t'#include <packing>',\n\n\t\t'float getLinearDepth( const in vec2 screenPosition ) {',\n\n\t\t'\t#if PERSPECTIVE_CAMERA == 1',\n\n\t\t'\t\tfloat fragCoordZ = texture2D( tDepth, screenPosition ).x;',\n\t\t'\t\tfloat viewZ = perspectiveDepthToViewZ( fragCoordZ, cameraNear, cameraFar );',\n\t\t'\t\treturn viewZToOrthographicDepth( viewZ, cameraNear, cameraFar );',\n\n\t\t'\t#else',\n\n\t\t'\t\treturn texture2D( tDepth, screenPosition ).x;',\n\n\t\t'\t#endif',\n\n\t\t'}',\n\n\t\t'void main() {',\n\n\t\t'\tfloat depth = getLinearDepth( vUv );',\n\t\t'\tgl_FragColor = vec4( vec3( 1.0 - depth ), 1.0 );',\n\n\t\t'}'\n\n\t].join( '\\n' )\n\n};\n\nvar SSAOBlurShader = {\n\n\tuniforms: {\n\n\t\t'tDiffuse': { value: null },\n\t\t'resolution': { value: new Vector2() }\n\n\t},\n\n\tvertexShader: [\n\n\t\t'varying vec2 vUv;',\n\n\t\t'void main() {',\n\n\t\t'\tvUv = uv;',\n\t\t'\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );',\n\n\t\t'}'\n\n\t].join( '\\n' ),\n\n\tfragmentShader: [\n\n\t\t'uniform sampler2D tDiffuse;',\n\n\t\t'uniform vec2 resolution;',\n\n\t\t'varying vec2 vUv;',\n\n\t\t'void main() {',\n\n\t\t'\tvec2 texelSize = ( 1.0 / resolution );',\n\t\t'\tfloat result = 0.0;',\n\n\t\t'\tfor ( int i = - 2; i <= 2; i ++ ) {',\n\n\t\t'\t\tfor ( int j = - 2; j <= 2; j ++ ) {',\n\n\t\t'\t\t\tvec2 offset = ( vec2( float( i ), float( j ) ) ) * texelSize;',\n\t\t'\t\t\tresult += texture2D( tDiffuse, vUv + offset ).r;',\n\n\t\t'\t\t}',\n\n\t\t'\t}',\n\n\t\t'\tgl_FragColor = vec4( vec3( result / ( 5.0 * 5.0 ) ), 1.0 );',\n\n\t\t'}'\n\n\t].join( '\\n' )\n\n};\n\nexport { SSAOShader, SSAODepthShader, SSAOBlurShader };\n","// The module cache\nvar __webpack_module_cache__ = {};\n\n// The require function\nfunction __webpack_require__(moduleId) {\n\t// Check if module is in cache\n\tif(__webpack_module_cache__[moduleId]) {\n\t\treturn __webpack_module_cache__[moduleId].exports;\n\t}\n\t// Create a new module (and put it into the cache)\n\tvar module = __webpack_module_cache__[moduleId] = {\n\t\t// no module.id needed\n\t\t// no module.loaded needed\n\t\texports: {}\n\t};\n\n\t// Execute the module function\n\t__webpack_modules__[moduleId](module, module.exports, __webpack_require__);\n\n\t// Return the exports of the module\n\treturn module.exports;\n}\n\n","// getDefaultExport function for compatibility with non-harmony modules\n__webpack_require__.n = (module) => {\n\tvar getter = module && module.__esModule ?\n\t\t() => module['default'] :\n\t\t() => module;\n\t__webpack_require__.d(getter, { a: getter });\n\treturn getter;\n};","// define getter functions for harmony exports\n__webpack_require__.d = (exports, definition) => {\n\tfor(var key in definition) {\n\t\tif(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) {\n\t\t\tObject.defineProperty(exports, key, { enumerable: true, get: definition[key] });\n\t\t}\n\t}\n};","__webpack_require__.g = (function() {\n\tif (typeof globalThis === 'object') return globalThis;\n\ttry {\n\t\treturn this || new Function('return this')();\n\t} catch (e) {\n\t\tif (typeof window === 'object') return window;\n\t}\n})();","__webpack_require__.o = (obj, prop) => Object.prototype.hasOwnProperty.call(obj, prop)","// define __esModule on exports\n__webpack_require__.r = (exports) => {\n\tif(typeof Symbol !== 'undefined' && Symbol.toStringTag) {\n\t\tObject.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });\n\t}\n\tObject.defineProperty(exports, '__esModule', { value: true });\n};","// module exports must be returned from runtime so entry inlining is disabled\n// startup\n// Load entry module and return exports\nreturn __webpack_require__(\"./src/index.js\");\n"],"sourceRoot":""}
\ No newline at end of file
diff --git a/packages/viewer/example/demo.js b/packages/viewer/example/demo.js
index 871e11d02..5a1ada482 100644
--- a/packages/viewer/example/demo.js
+++ b/packages/viewer/example/demo.js
@@ -228,7 +228,7 @@ var v = new _modules_Viewer__WEBPACK_IMPORTED_MODULE_0__.default({
 });
 v.on('load-progress', args => console.log(args));
 window.v = v;
-var token = 'e844747dc6f6b0b5c7d5fbd82d66de6e9529531d75';
+var token = '72b3da65eb21cb211f9d79fc1d12ef3699fc47e6f0';
 
 window.LoadData = /*#__PURE__*/function () {
   var _LoadData = _asyncToGenerator(function* (url) {
@@ -314,8 +314,10 @@ __webpack_require__.r(__webpack_exports__);
 /* harmony export */   "default": () => /* binding */ Coverter
 /* harmony export */ });
 /* harmony import */ var three__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! three */ "./node_modules/three/build/three.module.js");
-/* harmony import */ var _ObjectWrapper__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./ObjectWrapper */ "./src/modules/ObjectWrapper.js");
-/* harmony import */ var _Units__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./Units */ "./src/modules/Units.js");
+/* harmony import */ var three_examples_jsm_curves_NURBSCurve__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! three/examples/jsm/curves/NURBSCurve */ "./node_modules/three/examples/jsm/curves/NURBSCurve.js");
+/* harmony import */ var three_examples_jsm_curves_NURBSUtils__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! three/examples/jsm/curves/NURBSUtils */ "./node_modules/three/examples/jsm/curves/NURBSUtils.js");
+/* harmony import */ var _ObjectWrapper__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! ./ObjectWrapper */ "./src/modules/ObjectWrapper.js");
+/* harmony import */ var _Units__WEBPACK_IMPORTED_MODULE_4__ = __webpack_require__(/*! ./Units */ "./src/modules/Units.js");
 function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }
 
 function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }
@@ -329,6 +331,9 @@ function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _d
 
 
 
+
+
+
 /**
  * Utility class providing some top level conversion methods.
  */
@@ -389,7 +394,7 @@ var Coverter = /*#__PURE__*/function () {
             callback(yield this[type + "ToBufferGeometry"](obj.data || obj));
             return;
           } catch (e) {
-            console.warn("(Traversing - direct) Failed to convert " + type + " with id: " + obj.id);
+            console.warn("(Traversing - direct) Failed to convert " + type + " with id: " + obj.id, e);
           }
         }
 
@@ -405,10 +410,10 @@ var Coverter = /*#__PURE__*/function () {
             var {
               bufferGeometry
             } = yield this.convert(displayValue);
-            callback(new _ObjectWrapper__WEBPACK_IMPORTED_MODULE_1__.default(bufferGeometry, obj)); // use the parent's metadata!
+            callback(new _ObjectWrapper__WEBPACK_IMPORTED_MODULE_3__.default(bufferGeometry, obj)); // use the parent's metadata!
             // return // returning here is faster but excludes objects that have a display value and displayable children (ie, a wall with windows)
           } catch (e) {
-            console.warn("(Traversing) Failed to convert obj with id: " + obj.id);
+            console.warn("(Traversing) Failed to convert obj with id: " + obj.id + " \u2014 " + e.message);
           }
         } // Last attempt: iterate through all object keys and see if we can display anything!
         // traverses the object in case there's any sub-objects we can convert.
@@ -548,7 +553,7 @@ var Coverter = /*#__PURE__*/function () {
           delete obj.Curve3D;
           delete obj.Surfaces;
           delete obj.Vertices;
-          return new _ObjectWrapper__WEBPACK_IMPORTED_MODULE_1__.default(bufferGeometry, obj);
+          return new _ObjectWrapper__WEBPACK_IMPORTED_MODULE_3__.default(bufferGeometry, obj);
         } catch (e) {
           console.warn("Failed to convert brep id: " + obj.id);
           throw e;
@@ -567,7 +572,7 @@ var Coverter = /*#__PURE__*/function () {
       var _MeshToBufferGeometry = _asyncToGenerator(function* (obj) {
         try {
           if (!obj) return;
-          var conversionFactor = (0,_Units__WEBPACK_IMPORTED_MODULE_2__.getConversionFactor)(obj.units); // console.log( conversionFactor )
+          var conversionFactor = (0,_Units__WEBPACK_IMPORTED_MODULE_4__.getConversionFactor)(obj.units); // console.log( conversionFactor )
 
           var buffer = new three__WEBPACK_IMPORTED_MODULE_0__.BufferGeometry();
           var indices = [];
@@ -595,7 +600,7 @@ var Coverter = /*#__PURE__*/function () {
           buffer.computeBoundingSphere();
           delete obj.vertices;
           delete obj.faces;
-          return new _ObjectWrapper__WEBPACK_IMPORTED_MODULE_1__.default(buffer, obj);
+          return new _ObjectWrapper__WEBPACK_IMPORTED_MODULE_3__.default(buffer, obj);
         } catch (e) {
           console.warn("Failed to convert mesh with id: " + obj.id);
           throw e;
@@ -608,15 +613,187 @@ var Coverter = /*#__PURE__*/function () {
 
       return MeshToBufferGeometry;
     }() // TODOs:
-    // async PointToBufferGeometry( obj ) {}
-    // async LineToBufferGeometry( obj ) {}
-    // async PolylineToBufferGeometry( obj ) {}
-    // async PolycurveToBufferGeometry( obj ) {}
-    // async CurveToBufferGeometry( obj ) {}
-    // async CircleToBufferGeometry( obj ) {}
-    // async ArcToBufferGeometry( obj ) {}
-    // async EllipseToBufferGeometry( obj ) {}
-    // async SurfaceToBufferGeometry( obj ) {}
+
+  }, {
+    key: "PointToBufferGeometry",
+    value: function () {
+      var _PointToBufferGeometry = _asyncToGenerator(function* (obj) {
+        var conversionFactor = (0,_Units__WEBPACK_IMPORTED_MODULE_4__.getConversionFactor)(obj.units);
+        var v = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3(obj.value[0] * conversionFactor, obj.value[1] * conversionFactor, obj.value[2] * conversionFactor);
+        var buf = new three__WEBPACK_IMPORTED_MODULE_0__.BufferGeometry().setFromPoints([v]);
+        delete obj.value;
+        delete obj.speckle_type;
+        return new _ObjectWrapper__WEBPACK_IMPORTED_MODULE_3__.default(buf, obj, 'point');
+      });
+
+      function PointToBufferGeometry(_x8) {
+        return _PointToBufferGeometry.apply(this, arguments);
+      }
+
+      return PointToBufferGeometry;
+    }()
+  }, {
+    key: "LineToBufferGeometry",
+    value: function () {
+      var _LineToBufferGeometry = _asyncToGenerator(function* (obj) {
+        return this.PolylineToBufferGeometry(obj);
+      });
+
+      function LineToBufferGeometry(_x9) {
+        return _LineToBufferGeometry.apply(this, arguments);
+      }
+
+      return LineToBufferGeometry;
+    }()
+  }, {
+    key: "PolylineToBufferGeometry",
+    value: function () {
+      var _PolylineToBufferGeometry = _asyncToGenerator(function* (obj) {
+        var conversionFactor = (0,_Units__WEBPACK_IMPORTED_MODULE_4__.getConversionFactor)(obj.units);
+        var points = [];
+
+        for (var i = 0; i < obj.value.length; i += 3) {
+          points.push(new three__WEBPACK_IMPORTED_MODULE_0__.Vector3(obj.value[i] * conversionFactor, obj.value[i + 1] * conversionFactor, obj.value[i + 2] * conversionFactor));
+        }
+
+        var geometry = new three__WEBPACK_IMPORTED_MODULE_0__.BufferGeometry().setFromPoints(points);
+        delete obj.value;
+        delete obj.speckle_type;
+        return new _ObjectWrapper__WEBPACK_IMPORTED_MODULE_3__.default(geometry, obj, 'line');
+      });
+
+      function PolylineToBufferGeometry(_x10) {
+        return _PolylineToBufferGeometry.apply(this, arguments);
+      }
+
+      return PolylineToBufferGeometry;
+    }() // async PolycurveToBufferGeometry( obj ) {}
+
+  }, {
+    key: "CurveToBufferGeometry",
+    value: function () {
+      var _CurveToBufferGeometry = _asyncToGenerator(function* (obj) {
+        try {
+          console.log('Curve to buffer', obj);
+          var conversionFactor = (0,_Units__WEBPACK_IMPORTED_MODULE_4__.getConversionFactor)(obj.units); // Convert points+weights to Vector4
+
+          var points = [];
+
+          for (var i = 0; i < obj.points.length; i += 3) {
+            points.push(new three__WEBPACK_IMPORTED_MODULE_0__.Vector4(obj.points[i] * conversionFactor, obj.points[i + 1] * conversionFactor, obj.points[i + 2] * conversionFactor, obj.weights[i / 3] * conversionFactor));
+          } // Convert knots from rhino compact format to normal format.
+
+
+          var knots = [obj.knots[0]];
+          knots = knots.concat(obj.knots);
+          knots.push(knots[knots.length - 1]); // Create the nurbs curve
+
+          var curve = new three_examples_jsm_curves_NURBSCurve__WEBPACK_IMPORTED_MODULE_1__.NURBSCurve(obj.degree, knots, points, null, null); // Delete everything unnecessary from the metadata object.
+
+          delete obj.speckle_type;
+          delete obj.displayValue;
+          delete obj.points;
+          delete obj.weights;
+          delete obj.knots; // Compute appropriate curve subdivisions
+
+          var div = curve.getLength() / 0.1;
+          div = parseInt(div.toString());
+          if (div < 20) div = 20;
+          if (div > 4000) div = 4000; // Divide the nurbs curve in points
+
+          var pts = curve.getPoints(div);
+          return new _ObjectWrapper__WEBPACK_IMPORTED_MODULE_3__.default(new three__WEBPACK_IMPORTED_MODULE_0__.BufferGeometry().setFromPoints(pts), obj, 'line');
+        } catch (e) {
+          console.warn('Error converting nurbs curve, falling back to displayValue', obj);
+          var poly = yield this.PolylineToBufferGeometry(obj.displayValue);
+          delete obj.speckle_type;
+          delete obj.displayValue;
+          delete obj.points;
+          delete obj.weights;
+          delete obj.knots;
+          return new _ObjectWrapper__WEBPACK_IMPORTED_MODULE_3__.default(poly.bufferGeometry, obj, 'line');
+        }
+      });
+
+      function CurveToBufferGeometry(_x11) {
+        return _CurveToBufferGeometry.apply(this, arguments);
+      }
+
+      return CurveToBufferGeometry;
+    }()
+  }, {
+    key: "CircleToBufferGeometry",
+    value: function () {
+      var _CircleToBufferGeometry = _asyncToGenerator(function* (obj) {
+        console.log('circle to buffer', obj);
+        var center = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3(obj.plane.origin.value[0], obj.plane.origin.value[1], obj.plane.origin.value[2]);
+        var xAxis = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3(obj.plane.xdir.value[0], obj.plane.xdir.value[1], obj.plane.xdir.value[2]);
+        var yAxis = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3(obj.plane.ydir.value[0], obj.plane.ydir.value[1], obj.plane.ydir.value[2]);
+        console.log(center, xAxis, yAxis);
+        var resolution = 2 * Math.PI * obj.radius / 0.1;
+        resolution = parseInt(resolution.toString());
+        var points = [];
+
+        for (var index = 0; index <= resolution; index++) {
+          var t = index * Math.PI * 2 / resolution;
+          var x = Math.cos(t) * obj.radius;
+          var y = Math.sin(t) * obj.radius;
+          var xMove = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3(xAxis.x * x, xAxis.y * x, xAxis.z * x);
+          var yMove = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3(yAxis.x * y, yAxis.y * y, yAxis.z * y);
+          var pt = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3().addVectors(xMove, yMove).add(center);
+          points.push(pt);
+        }
+
+        console.log(points);
+        var geometry = new three__WEBPACK_IMPORTED_MODULE_0__.BufferGeometry().setFromPoints(points);
+        delete obj.value;
+        delete obj.speckle_type;
+        return new _ObjectWrapper__WEBPACK_IMPORTED_MODULE_3__.default(geometry, obj, 'line');
+      });
+
+      function CircleToBufferGeometry(_x12) {
+        return _CircleToBufferGeometry.apply(this, arguments);
+      }
+
+      return CircleToBufferGeometry;
+    }() // async ArcToBufferGeometry( obj ) {}
+
+  }, {
+    key: "EllipseToBufferGeometry",
+    value: function () {
+      var _EllipseToBufferGeometry = _asyncToGenerator(function* (obj) {
+        console.log('ellipse to buffer', obj);
+        var center = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3(obj.plane.origin.value[0], obj.plane.origin.value[1], obj.plane.origin.value[2]);
+        var xAxis = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3(obj.plane.xdir.value[0], obj.plane.xdir.value[1], obj.plane.xdir.value[2]);
+        var yAxis = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3(obj.plane.ydir.value[0], obj.plane.ydir.value[1], obj.plane.ydir.value[2]);
+        console.log(center, xAxis, yAxis);
+        var resolution = 2 * Math.PI * obj.radius / 0.1;
+        resolution = parseInt(resolution.toString());
+        var points = [];
+
+        for (var index = 0; index <= resolution; index++) {
+          var t = index * Math.PI * 2 / resolution;
+          var x = Math.cos(t) * obj.radius1;
+          var y = Math.sin(t) * obj.radius2;
+          var xMove = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3(xAxis.x * x, xAxis.y * x, xAxis.z * x);
+          var yMove = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3(yAxis.x * y, yAxis.y * y, yAxis.z * y);
+          var pt = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3().addVectors(xMove, yMove).add(center);
+          points.push(pt);
+        }
+
+        console.log(points);
+        var geometry = new three__WEBPACK_IMPORTED_MODULE_0__.BufferGeometry().setFromPoints(points);
+        delete obj.value;
+        delete obj.speckle_type;
+        return new _ObjectWrapper__WEBPACK_IMPORTED_MODULE_3__.default(geometry, obj, 'line');
+      });
+
+      function EllipseToBufferGeometry(_x13) {
+        return _EllipseToBufferGeometry.apply(this, arguments);
+      }
+
+      return EllipseToBufferGeometry;
+    }() // async SurfaceToBufferGeometry( obj ) {}
 
   }]);
 
@@ -971,6 +1148,7 @@ function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _d
 
 
 
+
 /**
  * Manages objects and provides some convenience methods to focus on the entire scene, or one specific object.
  */
@@ -1008,8 +1186,15 @@ var SceneObjectManager = /*#__PURE__*/function () {
       transparent: true,
       opacity: 0.4,
       envMap: this.viewer.cubeCamera.renderTarget.texture
-    }); // this.lineMaterial = new
-
+    });
+    this.lineMaterial = new three__WEBPACK_IMPORTED_MODULE_0__.LineBasicMaterial({
+      color: 0x000000
+    });
+    this.pointMaterial = new three__WEBPACK_IMPORTED_MODULE_0__.PointsMaterial({
+      size: 10,
+      sizeAttenuation: false,
+      color: 0x000000
+    });
     this.objectIds = [];
     this.postLoad = lodash_debounce__WEBPACK_IMPORTED_MODULE_1___default()(() => {
       this._postLoadFunction();
@@ -1100,10 +1285,19 @@ var SceneObjectManager = /*#__PURE__*/function () {
     key: "addLine",
     value: function addLine(wrapper) {
       var line = new three__WEBPACK_IMPORTED_MODULE_0__.Line(wrapper.bufferGeometry, this.lineMaterial);
+      line.userData = wrapper.meta;
+      line.uuid = wrapper.meta.id;
+      this.objectIds.push(line.uuid);
+      this.solidObjects.add(line);
     }
   }, {
     key: "addPoint",
-    value: function addPoint(wrapper) {// TODO
+    value: function addPoint(wrapper) {
+      var dot = new three__WEBPACK_IMPORTED_MODULE_0__.Points(wrapper.bufferGeometry, this.pointMaterial);
+      dot.userData = wrapper.meta;
+      dot.uuid = wrapper.meta.id;
+      this.objectIds.push(dot.uuid);
+      this.solidObjects.add(dot);
     }
   }, {
     key: "removeObject",
@@ -65406,6 +65600,584 @@ TransformControlsPlane.prototype = Object.assign( Object.create( _build_three_mo
 
 
 
+/***/ }),
+
+/***/ "./node_modules/three/examples/jsm/curves/NURBSCurve.js":
+/*!**************************************************************!*\
+  !*** ./node_modules/three/examples/jsm/curves/NURBSCurve.js ***!
+  \**************************************************************/
+/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => {
+
+"use strict";
+__webpack_require__.r(__webpack_exports__);
+/* harmony export */ __webpack_require__.d(__webpack_exports__, {
+/* harmony export */   "NURBSCurve": () => /* binding */ NURBSCurve
+/* harmony export */ });
+/* harmony import */ var _build_three_module_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ../../../build/three.module.js */ "./node_modules/three/build/three.module.js");
+/* harmony import */ var _curves_NURBSUtils_js__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../curves/NURBSUtils.js */ "./node_modules/three/examples/jsm/curves/NURBSUtils.js");
+
+
+
+/**
+ * NURBS curve object
+ *
+ * Derives from Curve, overriding getPoint and getTangent.
+ *
+ * Implementation is based on (x, y [, z=0 [, w=1]]) control points with w=weight.
+ *
+ **/
+
+var NURBSCurve = function ( degree, knots /* array of reals */, controlPoints /* array of Vector(2|3|4) */, startKnot /* index in knots */, endKnot /* index in knots */ ) {
+
+	_build_three_module_js__WEBPACK_IMPORTED_MODULE_0__.Curve.call( this );
+
+	this.degree = degree;
+	this.knots = knots;
+	this.controlPoints = [];
+	// Used by periodic NURBS to remove hidden spans
+	this.startKnot = startKnot || 0;
+	this.endKnot = endKnot || ( this.knots.length - 1 );
+	for ( var i = 0; i < controlPoints.length; ++ i ) {
+
+		// ensure Vector4 for control points
+		var point = controlPoints[ i ];
+		this.controlPoints[ i ] = new _build_three_module_js__WEBPACK_IMPORTED_MODULE_0__.Vector4( point.x, point.y, point.z, point.w );
+
+	}
+
+};
+
+
+NURBSCurve.prototype = Object.create( _build_three_module_js__WEBPACK_IMPORTED_MODULE_0__.Curve.prototype );
+NURBSCurve.prototype.constructor = NURBSCurve;
+
+
+NURBSCurve.prototype.getPoint = function ( t, optionalTarget ) {
+
+	var point = optionalTarget || new _build_three_module_js__WEBPACK_IMPORTED_MODULE_0__.Vector3();
+
+	var u = this.knots[ this.startKnot ] + t * ( this.knots[ this.endKnot ] - this.knots[ this.startKnot ] ); // linear mapping t->u
+
+	// following results in (wx, wy, wz, w) homogeneous point
+	var hpoint = _curves_NURBSUtils_js__WEBPACK_IMPORTED_MODULE_1__.NURBSUtils.calcBSplinePoint( this.degree, this.knots, this.controlPoints, u );
+
+	if ( hpoint.w != 1.0 ) {
+
+		// project to 3D space: (wx, wy, wz, w) -> (x, y, z, 1)
+		hpoint.divideScalar( hpoint.w );
+
+	}
+
+	return point.set( hpoint.x, hpoint.y, hpoint.z );
+
+};
+
+
+NURBSCurve.prototype.getTangent = function ( t, optionalTarget ) {
+
+	var tangent = optionalTarget || new _build_three_module_js__WEBPACK_IMPORTED_MODULE_0__.Vector3();
+
+	var u = this.knots[ 0 ] + t * ( this.knots[ this.knots.length - 1 ] - this.knots[ 0 ] );
+	var ders = _curves_NURBSUtils_js__WEBPACK_IMPORTED_MODULE_1__.NURBSUtils.calcNURBSDerivatives( this.degree, this.knots, this.controlPoints, u, 1 );
+	tangent.copy( ders[ 1 ] ).normalize();
+
+	return tangent;
+
+};
+
+
+
+
+/***/ }),
+
+/***/ "./node_modules/three/examples/jsm/curves/NURBSUtils.js":
+/*!**************************************************************!*\
+  !*** ./node_modules/three/examples/jsm/curves/NURBSUtils.js ***!
+  \**************************************************************/
+/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => {
+
+"use strict";
+__webpack_require__.r(__webpack_exports__);
+/* harmony export */ __webpack_require__.d(__webpack_exports__, {
+/* harmony export */   "NURBSUtils": () => /* binding */ NURBSUtils
+/* harmony export */ });
+/* harmony import */ var _build_three_module_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ../../../build/three.module.js */ "./node_modules/three/build/three.module.js");
+
+
+/**
+ * NURBS utils
+ *
+ * See NURBSCurve and NURBSSurface.
+ **/
+
+
+/**************************************************************
+ *	NURBS Utils
+ **************************************************************/
+
+var NURBSUtils = {
+
+	/*
+	Finds knot vector span.
+
+	p : degree
+	u : parametric value
+	U : knot vector
+
+	returns the span
+	*/
+	findSpan: function ( p, u, U ) {
+
+		var n = U.length - p - 1;
+
+		if ( u >= U[ n ] ) {
+
+			return n - 1;
+
+		}
+
+		if ( u <= U[ p ] ) {
+
+			return p;
+
+		}
+
+		var low = p;
+		var high = n;
+		var mid = Math.floor( ( low + high ) / 2 );
+
+		while ( u < U[ mid ] || u >= U[ mid + 1 ] ) {
+
+			if ( u < U[ mid ] ) {
+
+				high = mid;
+
+			} else {
+
+				low = mid;
+
+			}
+
+			mid = Math.floor( ( low + high ) / 2 );
+
+		}
+
+		return mid;
+
+	},
+
+
+	/*
+	Calculate basis functions. See The NURBS Book, page 70, algorithm A2.2
+
+	span : span in which u lies
+	u    : parametric point
+	p    : degree
+	U    : knot vector
+
+	returns array[p+1] with basis functions values.
+	*/
+	calcBasisFunctions: function ( span, u, p, U ) {
+
+		var N = [];
+		var left = [];
+		var right = [];
+		N[ 0 ] = 1.0;
+
+		for ( var j = 1; j <= p; ++ j ) {
+
+			left[ j ] = u - U[ span + 1 - j ];
+			right[ j ] = U[ span + j ] - u;
+
+			var saved = 0.0;
+
+			for ( var r = 0; r < j; ++ r ) {
+
+				var rv = right[ r + 1 ];
+				var lv = left[ j - r ];
+				var temp = N[ r ] / ( rv + lv );
+				N[ r ] = saved + rv * temp;
+				saved = lv * temp;
+
+			 }
+
+			 N[ j ] = saved;
+
+		 }
+
+		 return N;
+
+	},
+
+
+	/*
+	Calculate B-Spline curve points. See The NURBS Book, page 82, algorithm A3.1.
+
+	p : degree of B-Spline
+	U : knot vector
+	P : control points (x, y, z, w)
+	u : parametric point
+
+	returns point for given u
+	*/
+	calcBSplinePoint: function ( p, U, P, u ) {
+
+		var span = this.findSpan( p, u, U );
+		var N = this.calcBasisFunctions( span, u, p, U );
+		var C = new _build_three_module_js__WEBPACK_IMPORTED_MODULE_0__.Vector4( 0, 0, 0, 0 );
+
+		for ( var j = 0; j <= p; ++ j ) {
+
+			var point = P[ span - p + j ];
+			var Nj = N[ j ];
+			var wNj = point.w * Nj;
+			C.x += point.x * wNj;
+			C.y += point.y * wNj;
+			C.z += point.z * wNj;
+			C.w += point.w * Nj;
+
+		}
+
+		return C;
+
+	},
+
+
+	/*
+	Calculate basis functions derivatives. See The NURBS Book, page 72, algorithm A2.3.
+
+	span : span in which u lies
+	u    : parametric point
+	p    : degree
+	n    : number of derivatives to calculate
+	U    : knot vector
+
+	returns array[n+1][p+1] with basis functions derivatives
+	*/
+	calcBasisFunctionDerivatives: function ( span, u, p, n, U ) {
+
+		var zeroArr = [];
+		for ( var i = 0; i <= p; ++ i )
+			zeroArr[ i ] = 0.0;
+
+		var ders = [];
+		for ( var i = 0; i <= n; ++ i )
+			ders[ i ] = zeroArr.slice( 0 );
+
+		var ndu = [];
+		for ( var i = 0; i <= p; ++ i )
+			ndu[ i ] = zeroArr.slice( 0 );
+
+		ndu[ 0 ][ 0 ] = 1.0;
+
+		var left = zeroArr.slice( 0 );
+		var right = zeroArr.slice( 0 );
+
+		for ( var j = 1; j <= p; ++ j ) {
+
+			left[ j ] = u - U[ span + 1 - j ];
+			right[ j ] = U[ span + j ] - u;
+
+			var saved = 0.0;
+
+			for ( var r = 0; r < j; ++ r ) {
+
+				var rv = right[ r + 1 ];
+				var lv = left[ j - r ];
+				ndu[ j ][ r ] = rv + lv;
+
+				var temp = ndu[ r ][ j - 1 ] / ndu[ j ][ r ];
+				ndu[ r ][ j ] = saved + rv * temp;
+				saved = lv * temp;
+
+			}
+
+			ndu[ j ][ j ] = saved;
+
+		}
+
+		for ( var j = 0; j <= p; ++ j ) {
+
+			ders[ 0 ][ j ] = ndu[ j ][ p ];
+
+		}
+
+		for ( var r = 0; r <= p; ++ r ) {
+
+			var s1 = 0;
+			var s2 = 1;
+
+			var a = [];
+			for ( var i = 0; i <= p; ++ i ) {
+
+				a[ i ] = zeroArr.slice( 0 );
+
+			}
+
+			a[ 0 ][ 0 ] = 1.0;
+
+			for ( var k = 1; k <= n; ++ k ) {
+
+				var d = 0.0;
+				var rk = r - k;
+				var pk = p - k;
+
+				if ( r >= k ) {
+
+					a[ s2 ][ 0 ] = a[ s1 ][ 0 ] / ndu[ pk + 1 ][ rk ];
+					d = a[ s2 ][ 0 ] * ndu[ rk ][ pk ];
+
+				}
+
+				var j1 = ( rk >= - 1 ) ? 1 : - rk;
+				var j2 = ( r - 1 <= pk ) ? k - 1 : p - r;
+
+				for ( var j = j1; j <= j2; ++ j ) {
+
+					a[ s2 ][ j ] = ( a[ s1 ][ j ] - a[ s1 ][ j - 1 ] ) / ndu[ pk + 1 ][ rk + j ];
+					d += a[ s2 ][ j ] * ndu[ rk + j ][ pk ];
+
+				}
+
+				if ( r <= pk ) {
+
+					a[ s2 ][ k ] = - a[ s1 ][ k - 1 ] / ndu[ pk + 1 ][ r ];
+					d += a[ s2 ][ k ] * ndu[ r ][ pk ];
+
+				}
+
+				ders[ k ][ r ] = d;
+
+				var j = s1;
+				s1 = s2;
+				s2 = j;
+
+			}
+
+		}
+
+		var r = p;
+
+		for ( var k = 1; k <= n; ++ k ) {
+
+			for ( var j = 0; j <= p; ++ j ) {
+
+				ders[ k ][ j ] *= r;
+
+			}
+
+			r *= p - k;
+
+		}
+
+		return ders;
+
+	},
+
+
+	/*
+		Calculate derivatives of a B-Spline. See The NURBS Book, page 93, algorithm A3.2.
+
+		p  : degree
+		U  : knot vector
+		P  : control points
+		u  : Parametric points
+		nd : number of derivatives
+
+		returns array[d+1] with derivatives
+		*/
+	calcBSplineDerivatives: function ( p, U, P, u, nd ) {
+
+		var du = nd < p ? nd : p;
+		var CK = [];
+		var span = this.findSpan( p, u, U );
+		var nders = this.calcBasisFunctionDerivatives( span, u, p, du, U );
+		var Pw = [];
+
+		for ( var i = 0; i < P.length; ++ i ) {
+
+			var point = P[ i ].clone();
+			var w = point.w;
+
+			point.x *= w;
+			point.y *= w;
+			point.z *= w;
+
+			Pw[ i ] = point;
+
+		}
+
+		for ( var k = 0; k <= du; ++ k ) {
+
+			var point = Pw[ span - p ].clone().multiplyScalar( nders[ k ][ 0 ] );
+
+			for ( var j = 1; j <= p; ++ j ) {
+
+				point.add( Pw[ span - p + j ].clone().multiplyScalar( nders[ k ][ j ] ) );
+
+			}
+
+			CK[ k ] = point;
+
+		}
+
+		for ( var k = du + 1; k <= nd + 1; ++ k ) {
+
+			CK[ k ] = new _build_three_module_js__WEBPACK_IMPORTED_MODULE_0__.Vector4( 0, 0, 0 );
+
+		}
+
+		return CK;
+
+	},
+
+
+	/*
+	Calculate "K over I"
+
+	returns k!/(i!(k-i)!)
+	*/
+	calcKoverI: function ( k, i ) {
+
+		var nom = 1;
+
+		for ( var j = 2; j <= k; ++ j ) {
+
+			nom *= j;
+
+		}
+
+		var denom = 1;
+
+		for ( var j = 2; j <= i; ++ j ) {
+
+			denom *= j;
+
+		}
+
+		for ( var j = 2; j <= k - i; ++ j ) {
+
+			denom *= j;
+
+		}
+
+		return nom / denom;
+
+	},
+
+
+	/*
+	Calculate derivatives (0-nd) of rational curve. See The NURBS Book, page 127, algorithm A4.2.
+
+	Pders : result of function calcBSplineDerivatives
+
+	returns array with derivatives for rational curve.
+	*/
+	calcRationalCurveDerivatives: function ( Pders ) {
+
+		var nd = Pders.length;
+		var Aders = [];
+		var wders = [];
+
+		for ( var i = 0; i < nd; ++ i ) {
+
+			var point = Pders[ i ];
+			Aders[ i ] = new _build_three_module_js__WEBPACK_IMPORTED_MODULE_0__.Vector3( point.x, point.y, point.z );
+			wders[ i ] = point.w;
+
+		}
+
+		var CK = [];
+
+		for ( var k = 0; k < nd; ++ k ) {
+
+			var v = Aders[ k ].clone();
+
+			for ( var i = 1; i <= k; ++ i ) {
+
+				v.sub( CK[ k - i ].clone().multiplyScalar( this.calcKoverI( k, i ) * wders[ i ] ) );
+
+			}
+
+			CK[ k ] = v.divideScalar( wders[ 0 ] );
+
+		}
+
+		return CK;
+
+	},
+
+
+	/*
+	Calculate NURBS curve derivatives. See The NURBS Book, page 127, algorithm A4.2.
+
+	p  : degree
+	U  : knot vector
+	P  : control points in homogeneous space
+	u  : parametric points
+	nd : number of derivatives
+
+	returns array with derivatives.
+	*/
+	calcNURBSDerivatives: function ( p, U, P, u, nd ) {
+
+		var Pders = this.calcBSplineDerivatives( p, U, P, u, nd );
+		return this.calcRationalCurveDerivatives( Pders );
+
+	},
+
+
+	/*
+	Calculate rational B-Spline surface point. See The NURBS Book, page 134, algorithm A4.3.
+
+	p1, p2 : degrees of B-Spline surface
+	U1, U2 : knot vectors
+	P      : control points (x, y, z, w)
+	u, v   : parametric values
+
+	returns point for given (u, v)
+	*/
+	calcSurfacePoint: function ( p, q, U, V, P, u, v, target ) {
+
+		var uspan = this.findSpan( p, u, U );
+		var vspan = this.findSpan( q, v, V );
+		var Nu = this.calcBasisFunctions( uspan, u, p, U );
+		var Nv = this.calcBasisFunctions( vspan, v, q, V );
+		var temp = [];
+
+		for ( var l = 0; l <= q; ++ l ) {
+
+			temp[ l ] = new _build_three_module_js__WEBPACK_IMPORTED_MODULE_0__.Vector4( 0, 0, 0, 0 );
+			for ( var k = 0; k <= p; ++ k ) {
+
+				var point = P[ uspan - p + k ][ vspan - q + l ].clone();
+				var w = point.w;
+				point.x *= w;
+				point.y *= w;
+				point.z *= w;
+				temp[ l ].add( point.multiplyScalar( Nu[ k ] ) );
+
+			}
+
+		}
+
+		var Sw = new _build_three_module_js__WEBPACK_IMPORTED_MODULE_0__.Vector4( 0, 0, 0, 0 );
+		for ( var l = 0; l <= q; ++ l ) {
+
+			Sw.add( temp[ l ].multiplyScalar( Nv[ l ] ) );
+
+		}
+
+		Sw.divideScalar( Sw.w );
+		target.set( Sw.x, Sw.y, Sw.z );
+
+	}
+
+};
+
+
+
+
 /***/ }),
 
 /***/ "./node_modules/three/examples/jsm/libs/stats.module.js":
diff --git a/packages/viewer/example/demo.js.map b/packages/viewer/example/demo.js.map
new file mode 100644
index 000000000..d61b603e6
--- /dev/null
+++ b/packages/viewer/example/demo.js.map
@@ -0,0 +1 @@
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strict'\n\nmodule.exports = ansiHTML\n\n// Reference to https://github.com/sindresorhus/ansi-regex\nvar _regANSI = /(?:(?:\\u001b\\[)|\\u009b)(?:(?:[0-9]{1,3})?(?:(?:;[0-9]{0,3})*)?[A-M|f-m])|\\u001b[A-M]/\n\nvar _defColors = {\n  reset: ['fff', '000'], // [FOREGROUD_COLOR, BACKGROUND_COLOR]\n  black: '000',\n  red: 'ff0000',\n  green: '209805',\n  yellow: 'e8bf03',\n  blue: '0000ff',\n  magenta: 'ff00ff',\n  cyan: '00ffee',\n  lightgrey: 'f0f0f0',\n  darkgrey: '888'\n}\nvar _styles = {\n  30: 'black',\n  31: 'red',\n  32: 'green',\n  33: 'yellow',\n  34: 'blue',\n  35: 'magenta',\n  36: 'cyan',\n  37: 'lightgrey'\n}\nvar _openTags = {\n  '1': 'font-weight:bold', // bold\n  '2': 'opacity:0.5', // dim\n  '3': '<i>', // italic\n  '4': '<u>', // underscore\n  '8': 'display:none', // hidden\n  '9': '<del>' // delete\n}\nvar _closeTags = {\n  '23': '</i>', // reset italic\n  '24': '</u>', // reset underscore\n  '29': '</del>' // reset delete\n}\n\n;[0, 21, 22, 27, 28, 39, 49].forEach(function (n) {\n  _closeTags[n] = '</span>'\n})\n\n/**\n * Converts text with ANSI color codes to HTML markup.\n * @param {String} text\n * @returns {*}\n */\nfunction ansiHTML (text) {\n  // Returns the text if the string has no ANSI escape code.\n  if (!_regANSI.test(text)) {\n    return text\n  }\n\n  // Cache opened sequence.\n  var ansiCodes = []\n  // Replace with markup.\n  var ret = text.replace(/\\033\\[(\\d+)*m/g, function (match, seq) {\n    var ot = _openTags[seq]\n    if (ot) {\n      // If current sequence has been opened, close it.\n      if (!!~ansiCodes.indexOf(seq)) { // eslint-disable-line no-extra-boolean-cast\n        ansiCodes.pop()\n        return '</span>'\n      }\n      // Open tag.\n      ansiCodes.push(seq)\n      return ot[0] === '<' ? ot : '<span style=\"' + ot + ';\">'\n    }\n\n    var ct = _closeTags[seq]\n    if (ct) {\n      // Pop sequence\n      ansiCodes.pop()\n      return ct\n    }\n    return ''\n  })\n\n  // Make sure tags are closed.\n  var l = ansiCodes.length\n  ;(l > 0) && (ret += Array(l + 1).join('</span>'))\n\n  return ret\n}\n\n/**\n * Customize colors.\n * @param {Object} colors reference to _defColors\n */\nansiHTML.setColors = function (colors) {\n  if (typeof colors !== 'object') {\n    throw new Error('`colors` parameter must be an Object.')\n  }\n\n  var _finalColors = {}\n  for (var key in _defColors) {\n    var hex = colors.hasOwnProperty(key) ? colors[key] : null\n    if (!hex) {\n      _finalColors[key] = _defColors[key]\n      continue\n    }\n    if ('reset' === key) {\n      if (typeof hex === 'string') {\n        hex = [hex]\n      }\n      if (!Array.isArray(hex) || hex.length === 0 || hex.some(function (h) {\n        return typeof h !== 'string'\n      })) {\n        throw new Error('The value of `' + key + '` property must be an Array and each item could only be a hex string, e.g.: FF0000')\n      }\n      var defHexColor = _defColors[key]\n      if (!hex[0]) {\n        hex[0] = defHexColor[0]\n      }\n      if (hex.length === 1 || !hex[1]) {\n        hex = [hex[0]]\n        hex.push(defHexColor[1])\n      }\n\n      hex = hex.slice(0, 2)\n    } else if (typeof hex !== 'string') {\n      throw new Error('The value of `' + key + '` property must be a hex string, e.g.: FF0000')\n    }\n    _finalColors[key] = hex\n  }\n  _setTags(_finalColors)\n}\n\n/**\n * Reset colors.\n */\nansiHTML.reset = function () {\n  _setTags(_defColors)\n}\n\n/**\n * Expose tags, including open and close.\n * @type {Object}\n */\nansiHTML.tags = {}\n\nif (Object.defineProperty) {\n  Object.defineProperty(ansiHTML.tags, 'open', {\n    get: function () { return _openTags }\n  })\n  Object.defineProperty(ansiHTML.tags, 'close', {\n    get: function () { return _closeTags }\n  })\n} else {\n  ansiHTML.tags.open = _openTags\n  ansiHTML.tags.close = _closeTags\n}\n\nfunction _setTags (colors) {\n  // reset all\n  _openTags['0'] = 'font-weight:normal;opacity:1;color:#' + colors.reset[0] + ';background:#' + colors.reset[1]\n  // inverse\n  _openTags['7'] = 'color:#' + colors.reset[1] + ';background:#' + colors.reset[0]\n  // dark grey\n  _openTags['90'] = 'color:#' + colors.darkgrey\n\n  for (var code in _styles) {\n    var color = _styles[code]\n    var oriColor = colors[color] || '000'\n    _openTags[code] = 'color:#' + oriColor\n    code = parseInt(code)\n    _openTags[(code + 10).toString()] = 'background:#' + oriColor\n  }\n}\n\nansiHTML.reset()\n","'use strict';\nmodule.exports = function () {\n\treturn /[\\u001b\\u009b][[()#;?]*(?:[0-9]{1,4}(?:;[0-9]{0,4})*)?[0-9A-PRZcf-nqry=><]/g;\n};\n","\nimport Viewer from './modules/Viewer'\nimport ObjectLoader from './modules/ObjectLoader'\nimport Converter from './modules/Converter'\n\nlet v = new Viewer( { container: document.getElementById( 'renderer' ) } )\nv.on( 'load-progress', args => console.log( args ) )\n\nwindow.v = v\n\nconst token = '72b3da65eb21cb211f9d79fc1d12ef3699fc47e6f0'\n\nwindow.LoadData = async function LoadData( url ) {\n  url = url || document.getElementById( 'objectUrlInput' ).value\n  await v.loadObject( url, token )\n}\n\nwindow.LoadDataOld = async function LoadData( id ) {\n\n  // v.sceneManager.removeAllObjects()\n\n  id = id || document.getElementById( 'objectIdInput' ).value\n  let loader = new ObjectLoader( {\n    serverUrl: 'https://staging.speckle.dev',\n    streamId: '5486aa9fc7',\n    token,\n    objectId: id\n  } )\n\n  let converter = new Converter( loader )\n  let first = true\n  // Note: it's important the loop continues to load.\n  for await ( let obj of loader.getObjectIterator() ) {\n    if ( first ) {\n      ( async() => {\n        await converter.traverseAndConvert( obj, ( o ) => v.sceneManager.addObject( o ) )\n      } )()\n      first = false\n    }\n  }\n}\n","import * as THREE from 'three'\nimport { BufferGeometry, Plane, PlaneBufferGeometry } from 'three'\nimport { NURBSCurve } from 'three/examples/jsm/curves/NURBSCurve'\nimport { NURBSUtils } from 'three/examples/jsm/curves/NURBSUtils'\nimport ObjectWrapper from './ObjectWrapper'\nimport { getConversionFactor } from './Units'\n\n/**\n * Utility class providing some top level conversion methods.\n */\nexport default class Coverter {\n\n  constructor( objectLoader ) {\n    if ( !objectLoader ) {\n      console.warn( 'Converter initialized without a corresponding object loader. Any objects that include references will throw errors.' )\n    }\n\n    this.objectLoader = objectLoader\n  }\n\n  /**\n   * If the object is convertable (there is a direct conversion routine), it will invoke the callback with the conversion result.\n   * If the object is not convertable, it will recursively iterate through it (arrays & objects) and invoke the callback on any postive conversion result.\n   * @param  {[type]}   obj      [description]\n   * @param  {Function} callback [description]\n   * @return {[type]}            [description]\n   */\n  async traverseAndConvert( obj, callback ) {\n    // Exit on primitives (string, ints, bools, bigints, etc.)\n    if ( typeof obj !== 'object' ) return\n\n    if ( obj.referencedId ) obj = await this.resolveReference( obj )\n\n    // Traverse arrays, and exit early (we don't want to iterate through many numbers)\n    if ( Array.isArray( obj ) ) {\n      for ( let element of obj ) {\n        if ( typeof element !== 'object' ) return // exit early for non-object based arrays\n        ( async() => await this.traverseAndConvert( element, callback ) )() //iife so we don't block\n      }\n    }\n\n    // If we can convert it, we should invoke the respective conversion routine.\n    const type = this.getSpeckleType( obj )\n    if ( this[`${type}ToBufferGeometry`] ) {\n      try {\n        callback( await this[`${type}ToBufferGeometry`]( obj.data || obj ) )\n        return\n      } catch ( e ) {\n        console.warn( `(Traversing - direct) Failed to convert ${type} with id: ${obj.id}`, e )\n      }\n    }\n\n    let target = obj.data || obj\n\n    // Check if the object has a display value of sorts\n    let displayValue = target['displayMesh'] || target['@displayMesh'] || target['displayValue']|| target['@displayValue']\n    if ( displayValue ) {\n      displayValue = await this.resolveReference( displayValue )\n      if ( !displayValue.units ) displayValue.units = obj.units\n\n      try {\n        let { bufferGeometry } = await this.convert( displayValue )\n        callback( new ObjectWrapper( bufferGeometry, obj ) ) // use the parent's metadata!\n\n        // return // returning here is faster but excludes objects that have a display value and displayable children (ie, a wall with windows)\n      } catch ( e ) {\n        console.warn( `(Traversing) Failed to convert obj with id: ${obj.id} — ${e.message}` )\n      }\n    }\n\n    // Last attempt: iterate through all object keys and see if we can display anything!\n    // traverses the object in case there's any sub-objects we can convert.\n    for ( let prop in target ) {\n      if ( typeof target[prop] !== 'object' ) continue\n      ( async() => await this.traverseAndConvert( target[prop], callback ) )() //iife so we don't block\n    }\n  }\n\n  /**\n   * Directly converts an object and invokes the callback with the the conversion result.\n   * @param  {[type]} obj [description]\n   * @param  {Function} callback [description]\n   * @return {[type]}     [description]\n   */\n  async convert( obj ) {\n    if ( obj.referencedId ) obj = await this.resolveReference( obj )\n    try {\n      let type = this.getSpeckleType( obj )\n      if ( this[`${type}ToBufferGeometry`] ) {\n        return await this[`${type}ToBufferGeometry`]( obj.data || obj )\n      }\n      else return null\n    } catch ( e ) {\n      console.warn( `(Direct convert) Failed to convert object with id: ${obj.id}` )\n      throw e\n    }\n  }\n\n  /**\n   * Takes an array composed of chunked references and dechunks it.\n   * @param  {[type]} arr [description]\n   * @return {[type]}     [description]\n   */\n  async dechunk( arr ) {\n    if ( !arr ) return arr\n    // Handles pre-chunking objects, or arrs that have not been chunked\n    if ( !arr[0].referencedId ) return arr\n\n    let dechunked = []\n    for ( let ref of arr ) {\n      let real = await this.objectLoader.getObject( ref.referencedId )\n      dechunked.push( ...real.data )\n    }\n    return dechunked\n  }\n\n  /**\n   * Resolves an object reference by waiting for the loader to load it up.\n   * @param  {[type]} obj [description]\n   * @return {[type]}     [description]\n   */\n  async resolveReference( obj ) {\n    if ( obj.referencedId )\n      return await this.objectLoader.getObject( obj.referencedId )\n    else return obj\n  }\n\n  /**\n   * Gets the speckle type of an object in various scenarios.\n   * @param  {[type]} obj [description]\n   * @return {[type]}     [description]\n   */\n  getSpeckleType( obj ) {\n    let type = 'Base'\n    if ( obj.data )\n      type = obj.data.speckle_type ? obj.data.speckle_type.split( '.' ).reverse()[0] : type\n    else\n      type = obj.speckle_type ? obj.speckle_type.split( '.' ).reverse()[0] : type\n    return type\n  }\n\n  async BrepToBufferGeometry( obj ) {\n    try {\n      if ( !obj ) return\n      let { bufferGeometry } = await this.MeshToBufferGeometry( await this.resolveReference( obj.displayValue || obj.displayMesh ) )\n\n      // deletes known uneeded fields\n      delete obj.displayMesh\n      delete obj.displayValue\n      delete obj.Edges\n      delete obj.Faces\n      delete obj.Loops\n      delete obj.Trims\n      delete obj.Curve2D\n      delete obj.Curve3D\n      delete obj.Surfaces\n      delete obj.Vertices\n\n      return new ObjectWrapper( bufferGeometry, obj )\n    } catch ( e ) {\n      console.warn( `Failed to convert brep id: ${obj.id}` )\n      throw e\n    }\n  }\n\n  async MeshToBufferGeometry( obj ) {\n    try {\n      if ( !obj ) return\n\n      let conversionFactor = getConversionFactor( obj.units )\n      // console.log( conversionFactor )\n      let buffer = new THREE.BufferGeometry( )\n      let indices = [ ]\n\n      let vertices = await this.dechunk( obj.vertices )\n      let faces = await this.dechunk( obj.faces )\n\n      let k = 0\n      while ( k < faces.length ) {\n        if ( faces[ k ] === 1 ) { // QUAD FACE\n          indices.push( faces[ k + 1 ], faces[ k + 2 ], faces[ k + 3 ] )\n          indices.push( faces[ k + 1 ], faces[ k + 3 ], faces[ k + 4 ] )\n          k += 5\n        } else if ( faces[ k ] === 0 ) { // TRIANGLE FACE\n          indices.push( faces[ k + 1 ], faces[ k + 2 ], faces[ k + 3 ] )\n          k += 4\n        } else throw new Error( `Mesh type not supported. Face topology indicator: ${faces[k]}` )\n      }\n      buffer.setIndex( indices )\n\n      buffer.setAttribute(\n        'position',\n        new THREE.Float32BufferAttribute( conversionFactor === 1 ? vertices : vertices.map( v => v * conversionFactor ), 3 ) )\n\n      buffer.computeVertexNormals( )\n      buffer.computeFaceNormals( )\n      buffer.computeBoundingSphere( )\n\n      delete obj.vertices\n      delete obj.faces\n\n      return new ObjectWrapper( buffer, obj )\n    } catch ( e ) {\n      console.warn( `Failed to convert mesh with id: ${obj.id}` )\n      throw e\n    }\n  }\n\n  // TODOs:\n  async PointToBufferGeometry( obj ) {\n    let conversionFactor = getConversionFactor( obj.units )\n    const v = new THREE.Vector3( obj.value[0]* conversionFactor,obj.value[1]* conversionFactor,obj.value[2] * conversionFactor )\n    let buf = new THREE.BufferGeometry().setFromPoints( [ v ] )\n    \n    delete obj.value\n    delete obj.speckle_type\n\n    return new ObjectWrapper( buf, obj, 'point' )\n  }\n\n  async LineToBufferGeometry( obj ) {\n    return this.PolylineToBufferGeometry( obj )\n  }\n  async PolylineToBufferGeometry( obj ) {\n    let conversionFactor = getConversionFactor( obj.units )\n\n    const points = []\n    for ( let i = 0; i < obj.value.length; i+=3 ) {\n      points.push( new THREE.Vector3( obj.value[ i ]* conversionFactor,obj.value[i+1]* conversionFactor,obj.value[i+2] * conversionFactor ) )\n    }\n    const geometry = new THREE.BufferGeometry().setFromPoints( points )\n\n    delete obj.value\n    delete obj.speckle_type\n\n    return new ObjectWrapper( geometry, obj, 'line' )\n  }\n\n  // async PolycurveToBufferGeometry( obj ) {}\n  async CurveToBufferGeometry( obj ) {\n    try {\n      console.log( 'Curve to buffer', obj )\n      let conversionFactor = getConversionFactor( obj.units )\n      \n      // Convert points+weights to Vector4\n      const points = []\n      for ( let i = 0; i < obj.points.length; i+=3 ) {\n        points.push( new THREE.Vector4( obj.points[ i ]* conversionFactor,obj.points[i+1]* conversionFactor,obj.points[i+2] * conversionFactor, obj.weights[i/3] * conversionFactor ) )\n      }\n      // Convert knots from rhino compact format to normal format.\n      let knots = [ obj.knots[0] ]\n      knots = knots.concat( obj.knots )\n      knots.push( knots[knots.length -1] )\n  \n      // Create the nurbs curve\n      const curve = new NURBSCurve( obj.degree, knots, points, null, null )\n      \n      // Delete everything unnecessary from the metadata object.\n      delete obj.speckle_type\n      delete obj.displayValue\n      delete obj.points\n      delete obj.weights\n      delete obj.knots\n      \n      // Compute appropriate curve subdivisions\n      let div = curve.getLength() / 0.1\n      div = parseInt( div.toString() ) \n      if ( div < 20 ) div = 20\n      if ( div > 4000 ) div = 4000\n\n      // Divide the nurbs curve in points\n      var pts = curve.getPoints( div )\n      return new ObjectWrapper( new BufferGeometry().setFromPoints( pts ), obj, 'line' )\n\n    } catch ( e ) {\n      console.warn( 'Error converting nurbs curve, falling back to displayValue', obj )\n      const poly = await this.PolylineToBufferGeometry( obj.displayValue )\n\n      delete obj.speckle_type\n      delete obj.displayValue\n      delete obj.points\n      delete obj.weights\n      delete obj.knots\n\n      return new ObjectWrapper( poly.bufferGeometry, obj, 'line' )\n    }\n\n    \n  }\n\n  async CircleToBufferGeometry( obj ) {\n    console.log( 'circle to buffer', obj )\n    \n    const center = new THREE.Vector3( obj.plane.origin.value[0],obj.plane.origin.value[1],obj.plane.origin.value[2] )\n    const xAxis = new THREE.Vector3( obj.plane.xdir.value[0],obj.plane.xdir.value[1],obj.plane.xdir.value[2] )\n    const yAxis = new THREE.Vector3( obj.plane.ydir.value[0],obj.plane.ydir.value[1],obj.plane.ydir.value[2] )\n    console.log( center,xAxis,yAxis )\n\n    let resolution = 2 * Math.PI * obj.radius / 0.1\n    resolution = parseInt( resolution.toString() )\n    let points = []\n\n    for ( let index = 0; index <= resolution; index++ ) {\n      let t = index * Math.PI * 2 / resolution\n      let x = Math.cos( t ) * obj.radius\n      let y = Math.sin( t ) * obj.radius\n      const xMove = new THREE.Vector3( xAxis.x * x, xAxis.y * x, xAxis.z * x )\n      const yMove = new THREE.Vector3( yAxis.x * y, yAxis.y * y, yAxis.z * y )\n  \n      let pt = new THREE.Vector3().addVectors( xMove, yMove ).add( center )\n      points.push( pt )\n    }\n    console.log( points )\n    const geometry = new THREE.BufferGeometry().setFromPoints( points )\n\n    delete obj.value\n    delete obj.speckle_type\n\n    return new ObjectWrapper( geometry, obj, 'line' )\n  }\n  \n\n  // async ArcToBufferGeometry( obj ) {}\n  async EllipseToBufferGeometry( obj ) {\n    console.log( 'ellipse to buffer', obj )\n    \n    const center = new THREE.Vector3( obj.plane.origin.value[0],obj.plane.origin.value[1],obj.plane.origin.value[2] )\n    const xAxis = new THREE.Vector3( obj.plane.xdir.value[0],obj.plane.xdir.value[1],obj.plane.xdir.value[2] )\n    const yAxis = new THREE.Vector3( obj.plane.ydir.value[0],obj.plane.ydir.value[1],obj.plane.ydir.value[2] )\n    console.log( center,xAxis,yAxis )\n\n    let resolution = 2 * Math.PI * obj.radius / 0.1\n    resolution = parseInt( resolution.toString() )\n    let points = []\n\n    for ( let index = 0; index <= resolution; index++ ) {\n      let t = index * Math.PI * 2 / resolution\n      let x = Math.cos( t ) * obj.radius1\n      let y = Math.sin( t ) * obj.radius2\n      const xMove = new THREE.Vector3( xAxis.x * x, xAxis.y * x, xAxis.z * x )\n      const yMove = new THREE.Vector3( yAxis.x * y, yAxis.y * y, yAxis.z * y )\n  \n      let pt = new THREE.Vector3().addVectors( xMove, yMove ).add( center )\n      points.push( pt )\n    }\n    console.log( points )\n    const geometry = new THREE.BufferGeometry().setFromPoints( points )\n\n    delete obj.value\n    delete obj.speckle_type\n\n    return new ObjectWrapper( geometry, obj, 'line' )\n  }\n  \n  // async SurfaceToBufferGeometry( obj ) {}\n}\n","\nexport default class EventEmitter {\n  constructor() {\n    this._events = {}\n  }\n\n  on( name, listener ) {\n    if ( !this._events[name] ) {\n      this._events[name] = []\n    }\n\n    this._events[name].push( listener )\n  }\n\n  removeListener( name, listenerToRemove ) {\n    if ( !this._events[name] ) return\n\n    const filterListeners = ( listener ) => listener !== listenerToRemove\n\n    this._events[name] = this._events[name].filter( filterListeners )\n  }\n\n  emit( name, data ) {\n    if ( !this._events[name] ) return\n\n    const fireCallbacks = ( callback ) => {\n      callback( data )\n    }\n\n    this._events[name].forEach( fireCallbacks )\n  }\n}\n","/**\n * Simple client that streams object info from a Speckle Server.\n * TODO: This should be split from the viewer into its own package.\n */\nexport default class ObjectLoader {\n\n  constructor( { serverUrl, streamId, token, objectId } ) {\n    this.INTERVAL_MS = 20\n    this.TIMEOUT_MS = 180000 // three mins\n\n    this.serverUrl = serverUrl || window.location.origin\n    this.streamId = streamId\n    this.objectId = objectId\n    this.token = token || localStorage.getItem( 'AuthToken' )\n    this.headers = {\n      'Authorization': `Bearer ${this.token}`,\n      'Accept': 'text/plain'\n    }\n    this.requestUrl = `${this.serverUrl}/objects/${this.streamId}/${this.objectId}`\n    this.promises = []\n    this.intervals = {}\n    this.buffer = []\n  }\n\n  dispose() {\n    this.buffer = []\n    this.intervals.forEach( i => clearInterval( i.interval ) )\n  }\n\n  async getObject( id ){\n    if ( this.buffer[id] ) return this.buffer[id]\n\n    let promise = new Promise( ( resolve, reject ) => {\n      this.promises.push( { id, resolve, reject } )\n      // Only create a new interval checker if none is already present!\n      if ( this.intervals[id] ) {\n        this.intervals[id].elapsed = 0 // reset elapsed\n      } else {\n        let intervalId = setInterval( this.tryResolvePromise.bind( this ), this.INTERVAL_MS, id )\n        this.intervals[id] = { interval: intervalId, elapsed: 0 }\n      }\n    } )\n    return promise\n  }\n\n  tryResolvePromise( id ) {\n    this.intervals[id].elapsed += this.INTERVAL_MS\n    if ( this.buffer[id] ) {\n      for ( let p of this.promises.filter( p => p.id === id ) ) {\n        p.resolve( this.buffer[id] )\n      }\n\n      clearInterval( this.intervals[id].interval )\n      delete this.intervals[id]\n      // this.promises = this.promises.filter( p => p.id !== p.id ) // clearing out promises too early seems to nuke loading\n      return\n    }\n\n    if ( this.intervals[id].elapsed > this.TIMEOUT_MS ) {\n      console.warn( `Timeout resolving ${id}. HIC SVNT DRACONES.` )\n      clearInterval( this.intervals[id].interval )\n      this.promises.filter( p => p.id === id ).forEach( p => p.reject() )\n      this.promises = this.promises.filter( p => p.id !== p.id ) // clear out\n    }\n  }\n\n  async * getObjectIterator(  ) {\n    for await ( let line of this.getRawObjectIterator() ) {\n      let { id, obj } = this.processLine( line )\n      this.buffer[ id ] = obj\n      yield obj\n    }\n  }\n\n  processLine( chunk ) {\n    var pieces = chunk.split( '\\t' )\n    return { id: pieces[0], obj: JSON.parse( pieces[1] ) }\n  }\n\n  async * getRawObjectIterator() {\n    const decoder = new TextDecoder()\n    const response = await fetch( this.requestUrl, { headers: this.headers } )\n    const reader = response.body.getReader()\n    let { value: chunk, done: readerDone } = await reader.read()\n    chunk = chunk ? decoder.decode( chunk ) : ''\n\n    let re = /\\r\\n|\\n|\\r/gm\n    let startIndex = 0\n\n    while ( true ) {\n      let result = re.exec( chunk )\n      if ( !result ) {\n        if ( readerDone ) break\n        let remainder = chunk.substr( startIndex );\n        ( { value: chunk, done: readerDone } = await reader.read() )\n        chunk = remainder + ( chunk ? decoder.decode( chunk ) : '' )\n        startIndex = re.lastIndex = 0\n        continue\n      }\n      yield chunk.substring( startIndex, result.index )\n      startIndex = re.lastIndex\n    }\n\n    if ( startIndex < chunk.length ) {\n      yield chunk.substr( startIndex )\n    }\n  }\n}\n","/**\n * Class that wraps around a buffer geometry and any remaining speckle object\n * metadata. Used to match the two in the renderer.\n */\nexport default class ObjectWrapper {\n  constructor( bufferGeometry, meta, geometryType ) {\n    this.bufferGeometry = bufferGeometry\n    this.meta = meta\n    this.geometryType = geometryType || 'solid'\n  }\n}\n","import * as THREE from 'three'\nimport debounce from 'lodash.debounce'\nimport { LineBasicMaterial } from 'three'\n\n\n/**\n * Manages objects and provides some convenience methods to focus on the entire scene, or one specific object.\n */\nexport default class SceneObjectManager {\n\n  constructor( viewer ) {\n    this.viewer = viewer\n    this.scene = viewer.scene\n    this.userObjects = new THREE.Group()\n    this.solidObjects = new THREE.Group()\n    this.transparentObjects = new THREE.Group()\n\n    this.userObjects.add( this.solidObjects )\n    this.userObjects.add( this.transparentObjects )\n    this.scene.add( this.userObjects )\n\n    this.solidMaterial = new THREE.MeshStandardMaterial( {\n      color: 0x8D9194,\n      emissive: 0x0,\n      roughness: 1,\n      metalness: 0,\n      side: THREE.DoubleSide,\n      envMap: this.viewer.cubeCamera.renderTarget.texture\n    } )\n\n    this.transparentMaterial = new THREE.MeshStandardMaterial( {\n      color: 0xA0A4A8,\n      emissive: 0x0,\n      roughness: 0,\n      metalness: 0.5,\n      side: THREE.DoubleSide,\n      transparent: true,\n      opacity: 0.4,\n      envMap: this.viewer.cubeCamera.renderTarget.texture\n    } )\n\n    this.lineMaterial = new THREE.LineBasicMaterial( { color: 0x000000 } )\n\n    this.pointMaterial = new THREE.PointsMaterial( { size: 10, sizeAttenuation: false, color: 0x000000 } )\n\n    this.objectIds = []\n    this.postLoad = debounce( () => { this._postLoadFunction() }, 200 )\n\n    this.loaders = []\n  }\n\n  get objects() {\n    return [ ...this.solidObjects.children, ...this.transparentObjects.children ]\n  }\n\n  // Note: we might switch later down the line from cloning materials to solely\n  // using a few \"default\" ones and controlling color through vertex colors.\n  // For now a small compromise to speed up dev; it is not the most memory\n  // efficient approach.\n  // To support big models we might need to merge everything in buffer geometries,\n  // and control things separately to squeeze those sweet FPS (esp mobile); but\n  // this conflicts a bit with the interactivity requirements of the viewer, esp.\n  // the TODO ones (colour by property).\n  addObject( wrapper ) {\n    if ( !wrapper || !wrapper.bufferGeometry ) return\n\n\n    switch ( wrapper.geometryType ) {\n    case 'solid':\n      // Do we have a defined material?\n      if ( wrapper.meta.renderMaterial ) {\n\n        let renderMat = wrapper.meta.renderMaterial\n        let color = new THREE.Color( this._argbToRGB( renderMat.diffuse ) )\n        this._normaliseColor( color )\n        // Is it a transparent material?\n        if ( renderMat.opacity !== 1 ) {\n          let material = this.transparentMaterial.clone()\n          material.clippingPlanes = this.viewer.sectionPlaneHelper.planes\n          material.color = color\n          material.opacity = renderMat.opacity !== 0 ? renderMat.opacity : 0.2\n          this.addTransparentSolid( wrapper, material )\n\n        // It's not a transparent material!\n        } else {\n          let material = this.solidMaterial.clone()\n          material.clippingPlanes = this.viewer.sectionPlaneHelper.planes\n          material.color = color\n          material.metalness = renderMat.metalness\n          if ( material.metalness !== 0 ) material.roughness = 0.1\n          if ( material.metalness > 0.8 ) material.color = new THREE.Color( '#CDCDCD' ) // hack for rhino metal materials being black FFS\n          this.addSolid( wrapper, material )\n        }\n      } else {\n        // If we don't have defined material, just use the default\n        let material = this.solidMaterial.clone()\n        material.clippingPlanes = this.viewer.sectionPlaneHelper.planes\n        this.addSolid( wrapper, material )\n      }\n      break\n    case 'line':\n      this.addLine( wrapper )\n      break\n    case 'point':\n      this.addPoint( wrapper )\n      break\n    }\n\n    this.postLoad()\n  }\n\n  addSolid( wrapper, material ) {\n    const mesh = new THREE.Mesh( wrapper.bufferGeometry, material ? material : this.solidMaterial )\n    mesh.userData = wrapper.meta\n    mesh.uuid = wrapper.meta.id\n    this.objectIds.push( mesh.uuid )\n    this.solidObjects.add( mesh )\n  }\n\n  addTransparentSolid( wrapper, material ) {\n    const mesh = new THREE.Mesh( wrapper.bufferGeometry, material ? material : this.transparentMaterial )\n    mesh.userData = wrapper.meta\n    mesh.uuid = wrapper.meta.id\n    this.objectIds.push( mesh.uuid )\n    this.transparentObjects.add( mesh )\n  }\n\n  addLine( wrapper ) {\n    const line = new THREE.Line( wrapper.bufferGeometry, this.lineMaterial )\n    line.userData = wrapper.meta\n    line.uuid = wrapper.meta.id\n    this.objectIds.push( line.uuid )\n    this.solidObjects.add( line )\n  }\n\n  addPoint( wrapper ){\n    var dot = new THREE.Points( wrapper.bufferGeometry, this.pointMaterial )\n    dot.userData = wrapper.meta\n    dot.uuid = wrapper.meta.id\n    this.objectIds.push( dot.uuid )\n    this.solidObjects.add( dot )\n  }\n\n  removeObject( id ) {\n    // TODO\n  }\n\n  removeAllObjects() {\n    for ( let obj of this.objects ) {\n      if ( obj.geometry ){\n        obj.geometry.dispose()\n      }\n    }\n    this.solidObjects.clear()\n    this.transparentObjects.clear()\n    this.viewer.selectionHelper.unselect()\n    this.objectIds = []\n\n    this._postLoadFunction()\n  }\n\n  _postLoadFunction() {\n    this.zoomExtents()\n    this.viewer.reflectionsNeedUpdate = true\n    this.viewer.sectionPlaneHelper._matchSceneSize()\n  }\n\n  zoomToObject( target ) {\n    const box = new THREE.Box3().setFromObject( target )\n    this.zoomToBox( box )\n  }\n\n  zoomExtents() {\n    let bboxTarget = this.userObjects\n    if ( this.objects.length === 0 )  {\n      let box = new THREE.Box3( new THREE.Vector3( -1,-1,-1 ), new THREE.Vector3( 1,1,1 ) )\n      this.zoomToBox( box )\n      return\n    }\n    let box = new THREE.Box3().setFromObject( bboxTarget )\n    this.zoomToBox( box )\n  }\n\n  // see this discussion: https://github.com/mrdoob/three.js/pull/14526#issuecomment-497254491\n  // Notes: seems that zooming in to a box 'rescales' the SSAO pass somehow and makes it\n  // look better. Could we do the same thing somehow when controls stop moving?\n  zoomToBox( box ) {\n    const fitOffset = 1.2\n\n    const size = box.getSize( new THREE.Vector3() )\n    const center = box.getCenter( new THREE.Vector3() )\n\n    const maxSize = Math.max( size.x, size.y, size.z )\n    const fitHeightDistance = maxSize / ( 2 * Math.atan( Math.PI * this.viewer.camera.fov / 360 ) )\n    const fitWidthDistance = fitHeightDistance / this.viewer.camera.aspect\n    const distance = fitOffset * Math.max( fitHeightDistance, fitWidthDistance )\n\n    const direction = this.viewer.controls.target.clone()\n      .sub( this.viewer.camera.position )\n      .normalize()\n      .multiplyScalar( distance )\n\n    // this.viewer.controls.maxDistance = distance * 20\n    this.viewer.controls.target.copy( center )\n\n    this.viewer.camera.near = distance / 100\n    this.viewer.camera.far = distance * 100\n    this.viewer.camera.updateProjectionMatrix()\n\n    this.viewer.camera.position.copy( this.viewer.controls.target ).sub( direction )\n\n    this.viewer.controls.update()\n  }\n\n  _argbToRGB( argb ) {\n    return '#'+ ( '000000' + ( argb & 0xFFFFFF ).toString( 16 ) ).slice( -6 )\n  }\n\n  _normaliseColor( color ) {\n    // Note: full of **magic numbers** that will need changing once global scene\n    // is properly set up; also to test with materials coming from other software too...\n    let hsl = {}\n    color.getHSL( hsl )\n\n    if ( hsl.s + hsl.l > 1 ) {\n      while ( hsl.s + hsl.l > 1 ){\n        hsl.s -= 0.05\n        hsl.l -= 0.05\n      }\n    }\n\n    if ( hsl.l > 0.6 ) {\n      hsl.l = 0.6\n    }\n\n    if ( hsl.l < 0.3 ) {\n      hsl.l = 0.3\n    }\n\n    color.setHSL( hsl.h, hsl.s, hsl.l )\n  }\n\n}\n","import * as THREE from 'three'\nimport { TransformControls } from 'three/examples/jsm/controls/TransformControls.js'\n\n/**\n * WIP: A utility class for adding section planes to the scene.\n * - 'S' shows/hides section planes\n * - 's' toggles controls from translate to rotate\n */\nexport default class SectionPlaneHelper {\n\n  constructor( parent ) {\n    this.viewer = parent\n    this.cutters = []\n    this.visible = false\n\n    window.addEventListener( 'keydown', ( event ) => {\n      if ( event.key === 's' ) {\n        this.toggleTransformControls()\n      }\n      if ( event.key === 'S' ) {\n        this.toggleSectionPlanes()\n      }\n    }, false )\n  }\n\n  get planes() {\n    return this.cutters.map( cutter => cutter.plane )\n  }\n\n  get activePlanes() {\n    return this.cutters.filter( cutter => cutter.visible ).map( cutter => cutter.plane )\n  }\n\n  toggleTransformControls() {\n    this.cutters.forEach( cutter => {\n      if ( cutter.control.mode === 'rotate' ) {\n        cutter.control.setMode( 'translate' )\n        cutter.control.showX = false\n        cutter.control.showY = false\n        cutter.control.showZ = true\n        return\n      }\n      cutter.control.setMode( 'rotate' )\n      cutter.control.showX = true\n      cutter.control.showY = true\n      cutter.control.showZ = false\n    } )\n  }\n\n  createSectionPlane() {\n    let cutter = { }\n\n    cutter.id = this.cutters.length\n    cutter.visible = false\n    cutter.plane = new THREE.Plane( new THREE.Vector3( 0, 0, -1 ), 1 )\n\n    cutter.helper = new THREE.Mesh( new THREE.PlaneGeometry( 1, 1, 1 ), new THREE.MeshBasicMaterial( { color: 0xAFAFAF, transparent: true, opacity: 0.1, side: THREE.DoubleSide } ) )\n    cutter.helper.visible = false\n    this.viewer.scene.add( cutter.helper )\n\n    cutter.control = new TransformControls( this.viewer.camera, this.viewer.renderer.domElement )\n    cutter.control.setSize( 0.5 )\n    cutter.control.space = 'local'\n    cutter.control.showX = false\n    cutter.control.showY = false\n    cutter.control.setRotationSnap( THREE.MathUtils.degToRad( 15 ) )\n\n    cutter.control.addEventListener( 'change', () => this.viewer.render )\n    cutter.control.addEventListener( 'dragging-changed', ( event ) => {\n      if ( !cutter.visible ) return\n      this.viewer.controls.enabled = !event.value\n\n      // Reference: https://stackoverflow.com/a/52124409\n      let normal = new THREE.Vector3()\n      let point = new THREE.Vector3()\n      normal.set( 0, 0, -1 ).applyQuaternion( cutter.helper.quaternion )\n      point.copy( cutter.helper.position )\n      cutter.plane.setFromNormalAndCoplanarPoint( normal, point )\n    } )\n\n    cutter.control.attach( cutter.helper )\n    cutter.control.visible = false\n    this.viewer.scene.add( cutter.control )\n\n    this.cutters.push( cutter )\n\n    // adds local clipping planes to all materials\n    let objs = this.viewer.sceneManager.objects\n    objs.forEach( obj => {\n      obj.material.clippingPlanes = this.cutters.map( c => c.plane )\n    } )\n  }\n\n  toggleSectionPlanes() {\n    if ( this.visible ) this.hideSectionPlanes()\n    else this.showSectionPlanes()\n\n    this.visible = !this.visible\n  }\n\n  showSectionPlanes() {\n    this._matchSceneSize()\n\n    this.cutters.forEach( cutter => {\n      cutter.visible = true\n      cutter.helper.visible = true\n      cutter.control.visible = true\n    } )\n\n    this.viewer.renderer.localClippingEnabled = true\n  }\n\n  hideSectionPlanes() {\n    this.cutters.forEach( cutter => {\n      cutter.visible = false\n      cutter.helper.visible = false\n      cutter.control.visible = false\n    } )\n    this.viewer.renderer.localClippingEnabled = false\n  }\n\n  _matchSceneSize() {\n    // Scales and translate helper to scene bbox center and origin\n    const sceneBox = new THREE.Box3().setFromObject( this.viewer.sceneManager.userObjects )\n    const sceneSize = new THREE.Vector3()\n    sceneBox.getSize( sceneSize )\n    const sceneCenter = new THREE.Vector3()\n    sceneBox.getCenter( sceneCenter )\n\n    this.cutters.forEach( cutter => {\n      cutter.helper.scale.set( sceneSize.x > 0 ? sceneSize.x : 1, sceneSize.y > 0 ? sceneSize.y : 1, sceneSize.z >0 ? sceneSize.z : 1 )\n      cutter.helper.position.set( sceneCenter.x, sceneCenter.y, sceneCenter.z )\n\n      let normal = new THREE.Vector3()\n      let point = new THREE.Vector3()\n      normal.set( 0, 0, -1 ).applyQuaternion( cutter.helper.quaternion )\n      point.copy( cutter.helper.position )\n      cutter.plane.setFromNormalAndCoplanarPoint( normal, point )\n    } )\n\n  }\n\n}\n","import * as THREE from 'three'\nimport debounce from 'lodash.debounce'\nimport EventEmitter from './EventEmitter'\n\n/**\n * Selects and deselects user added objects in the scene. Emits the array of all intersected objects on click.\n * Behaviours:\n * - Clicking on one object will select it.\n * - Double clicking on one object will focus on it.\n * - Double clicking anywhere else will focus the scene.\n * - Pressing escape will clear any selection present.\n * TODOs:\n * - Ensure clipped geometry is not selected.\n * - When objects are disposed, ensure selection is reset.\n */\nexport default class SelectionHelper extends EventEmitter {\n\n  constructor( parent ) {\n    super()\n    this.viewer = parent\n    this.raycaster = new THREE.Raycaster()\n\n    // Handle clicks during camera moves\n    this.orbiting = false\n    this.viewer.controls.addEventListener( 'change', debounce( () => { this.orbiting = false }, 100 ) )\n    this.viewer.controls.addEventListener( 'start', debounce( () => { this.orbiting = true }, 200 )  )\n    this.viewer.controls.addEventListener( 'end', debounce( () => { this.orbiting = false }, 200 )  )\n\n    // Handle mouseclicks\n    this.viewer.renderer.domElement.addEventListener( 'pointerup', ( e ) => {\n      if ( this.orbiting ) return\n\n      let selectionObjects = this.getClickedObjects( e )\n      this.handleSelection( selectionObjects )\n    } )\n\n    // Doubleclicks on touch devices\n    // http://jsfiddle.net/brettwp/J4djY/\n    this.tapTimeout\n    this.lastTap = 0\n    this.touchLocation\n    this.viewer.renderer.domElement.addEventListener( 'touchstart', ( e ) => { this.touchLocation = e.targetTouches[0] } )\n    this.viewer.renderer.domElement.addEventListener( 'touchend', ( event ) => {\n      var currentTime = new Date().getTime()\n      var tapLength = currentTime - this.lastTap\n      clearTimeout( this.tapTimeout )\n      if ( tapLength < 500 && tapLength > 0 ) {\n        let selectionObjects = this.getClickedObjects( this.touchLocation )\n        this.emit( 'object-doubleclicked', selectionObjects )\n        if ( !this.orbiting )\n          this.handleDoubleClick( selectionObjects )\n        event.preventDefault()\n      } else {\n        this.tapTimeout = setTimeout( function() {\n          clearTimeout( this.tapTimeout )\n        }, 500 )\n      }\n      this.lastTap = currentTime\n    } )\n\n    this.viewer.renderer.domElement.addEventListener( 'dblclick', ( e ) => {\n      // if ( this.orbiting ) return // not needed for zoom to thing?\n\n      let selectionObjects = this.getClickedObjects( e )\n\n      this.emit( 'object-doubleclicked', selectionObjects )\n      this.handleDoubleClick( selectionObjects )\n    } )\n\n    // Handle multiple object selection\n    this.multiSelect = false\n    document.addEventListener( 'keydown', ( e ) => {\n      if ( e.isComposing || e.keyCode === 229 ) return\n      if ( e.key === 'Shift' ) this.multiSelect = true\n      if ( e.key === 'Escape' ) this.unselect( )\n    } )\n    document.addEventListener( 'keyup', ( e ) => {\n      if ( e.isComposing || e.keyCode === 229 ) return\n      if ( e.key === 'Shift' ) this.multiSelect = false\n    } )\n\n    this.selectionMaterial = new THREE.MeshLambertMaterial( { color: 0x0B55D2, emissive: 0x0B55D2, side: THREE.DoubleSide } )\n    this.selectedObjects = new THREE.Group()\n    this.selectedObjects.renderOrder = 1000\n    this.viewer.scene.add( this.selectedObjects )\n\n    this.originalSelectionObjects = []\n  }\n\n  handleSelection( objects ) {\n    this.select( objects[0] )\n  }\n\n  handleDoubleClick( objects ) {\n    if ( !objects || objects.length === 0 ) this.viewer.sceneManager.zoomExtents()\n    else this.viewer.sceneManager.zoomToObject( objects[0].object )\n  }\n\n  select( obj ) {\n    if ( !this.multiSelect ) this.unselect()\n    if ( !obj ) {\n      this.emit( 'object-clicked', this.originalSelectionObjects )\n      return\n    }\n\n    let mesh = new THREE.Mesh( obj.object.geometry, this.selectionMaterial )\n    this.selectedObjects.add( mesh )\n    this.originalSelectionObjects.push( obj )\n    this.emit( 'object-clicked', this.originalSelectionObjects )\n  }\n\n  unselect() {\n    this.selectedObjects.clear()\n    this.originalSelectionObjects = []\n  }\n\n  getClickedObjects( e ) {\n    const normalizedPosition = this._getNormalisedClickPosition( e )\n    this.raycaster.setFromCamera( normalizedPosition, this.viewer.camera )\n\n    let intersectedObjects = this.raycaster.intersectObjects( this.viewer.sceneManager.objects )\n    intersectedObjects = intersectedObjects.filter( obj => this.viewer.sectionPlaneHelper.activePlanes.every( pl => pl.distanceToPoint( obj.point ) > 0 ) )\n\n    return intersectedObjects\n  }\n\n  _getNormalisedClickPosition( e ) {\n    // Reference: https://threejsfundamentals.org/threejs/lessons/threejs-picking.html\n    const canvas = this.viewer.renderer.domElement\n    const rect = this.viewer.renderer.domElement.getBoundingClientRect()\n\n    const pos = {\n      x: ( e.clientX - rect.left ) * canvas.width / rect.width,\n      y: ( e.clientY - rect.top ) * canvas.height / rect.height\n    }\n    return {\n      x: ( pos.x / canvas.width ) *  2 - 1,\n      y: ( pos.y / canvas.height ) * -2 + 1\n    }\n  }\n\n  dispose() {\n    this.viewer.scene.remove( this.selectedObjects )\n    this.unselect()\n    this.originalSelectionObjects = null\n    this.selectionMaterial = null\n    this.selectedObjects = null\n  }\n\n}\n","export const Units = {\n  Millimeters: 'mm',\n  Centimeters: 'cm',\n  Meters: 'm',\n  Kilometers: 'km',\n  Inches: 'in',\n  Feet: 'ft',\n  Yards: 'yd',\n  Miles: 'mi'\n}\n\nexport function getConversionFactor( from, to = Units.Meters ){\n  from = normaliseName( from )\n  to = normaliseName( to )\n  switch ( from )\n  {\n  // METRIC\n  case Units.Millimeters:\n    switch ( to )\n    {\n    case Units.Centimeters: return 0.1\n    case Units.Meters: return 0.001\n    case Units.Kilometers: return 1e-6\n    case Units.Inches: return 0.0393701\n    case Units.Feet: return 0.00328084\n    case Units.Yards: return 0.00109361\n    case Units.Miles: return 6.21371e-7\n    }\n    break\n  case Units.Centimeters:\n    switch ( to )\n    {\n    case Units.Millimeters: return 10\n    case Units.Meters: return 0.01\n    case Units.Kilometers: return 1e-5\n    case Units.Inches: return 0.393701\n    case Units.Feet: return 0.0328084\n    case Units.Yards: return 0.0109361\n    case Units.Miles: return 6.21371e-6\n    }\n    break\n  case Units.Meters:\n    switch ( to )\n    {\n    case Units.Millimeters: return 1000\n    case Units.Centimeters: return 100\n    case Units.Kilometers: return 1000\n    case Units.Inches: return 39.3701\n    case Units.Feet: return 3.28084\n    case Units.Yards: return 1.09361\n    case Units.Miles: return 0.000621371\n    }\n    break\n  case Units.Kilometers:\n    switch ( to )\n    {\n    case Units.Millimeters: return 1000000\n    case Units.Centimeters: return 100000\n    case Units.Meters: return 1000\n    case Units.Inches: return 39370.1\n    case Units.Feet: return 3280.84\n    case Units.Yards: return 1093.61\n    case Units.Miles: return 0.621371\n    }\n    break\n\n    // IMPERIAL\n  case Units.Inches:\n    switch ( to )\n    {\n    case Units.Millimeters: return 25.4\n    case Units.Centimeters: return 2.54\n    case Units.Meters: return 0.0254\n    case Units.Kilometers: return 2.54e-5\n    case Units.Feet: return 0.0833333\n    case Units.Yards: return 0.027777694\n    case Units.Miles: return 1.57828e-5\n    }\n    break\n  case Units.Feet:\n    switch ( to )\n    {\n    case Units.Millimeters: return 304.8\n    case Units.Centimeters: return 30.48\n    case Units.Meters: return 0.3048\n    case Units.Kilometers: return 0.0003048\n    case Units.Inches: return 12\n    case Units.Yards: return 0.333332328\n    case Units.Miles: return 0.000189394\n    }\n    break\n  case Units.Miles:\n    switch ( to )\n    {\n    case Units.Millimeters: return 1.609e+6\n    case Units.Centimeters: return 160934\n    case Units.Meters: return 1609.34\n    case Units.Kilometers: return 1.60934\n    case Units.Inches: return 63360\n    case Units.Feet: return 5280\n    case Units.Yards: return 1759.99469184\n    }\n    break\n  }\n  return 1\n}\n\nexport function normaliseName( unit ) {\n  if ( !unit ) return Units.Meters\n  switch ( unit.toLowerCase() )\n  {\n  case 'mm':\n  case 'mil':\n  case 'millimeters':\n  case 'millimetres':\n    return Units.Millimeters\n  case 'cm':\n  case 'centimetre':\n  case 'centimeter':\n  case 'centimetres':\n  case 'centimeters':\n    return Units.Centimeters\n  case 'm':\n  case 'meter':\n  case 'metre':\n  case 'meters':\n  case 'metres':\n    return Units.Meters\n  case 'inches':\n  case 'inch':\n  case 'in':\n    return Units.Inches\n  case 'feet':\n  case 'foot':\n  case 'ft':\n    return Units.Feet\n  case 'yard':\n  case 'yards':\n  case 'yd':\n    return Units.Yards\n  case 'miles':\n  case 'mile':\n  case 'mi':\n    return Units.Miles\n  default:\n    return Units.Meters\n  }\n}\n","import * as THREE from 'three'\nimport { OrbitControls } from 'three/examples/jsm/controls/OrbitControls.js'\nimport { EffectComposer } from 'three/examples/jsm/postprocessing/EffectComposer.js'\nimport { SSAOPass } from 'three/examples/jsm/postprocessing/SSAOPass.js'\nimport Stats from 'three/examples/jsm/libs/stats.module.js'\n\nimport ObjectManager from './SceneObjectManager'\nimport SelectionHelper from './SelectionHelper'\nimport SectionPlaneHelper from './SectionPlaneHelper'\nimport ViewerObjectLoader from './ViewerObjectLoader'\nimport EventEmitter from './EventEmitter'\n\nexport default class Viewer extends EventEmitter {\n\n  constructor( { container, postprocessing = true, reflections = true } ) {\n    super()\n    this.container = container || document.getElementById( 'renderer' )\n    this.postprocessing = postprocessing\n    this.scene = new THREE.Scene()\n\n    this.camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight )\n    this.camera.up.set( 0, 0, 1 )\n    this.camera.position.set( 1, 1, 1 )\n\n    this.renderer = new THREE.WebGLRenderer( { antialias: true, alpha: true } )\n    this.renderer.setClearColor( 0xcccccc, 0 )\n    this.renderer.setPixelRatio( window.devicePixelRatio )\n    this.renderer.setSize( this.container.offsetWidth, this.container.offsetHeight )\n    this.container.appendChild( this.renderer.domElement )\n\n    // commented out because the ssao flash is annoying\n    // this.renderer.gammaFactor = 2.2\n    // this.renderer.outputEncoding = THREE.sRGBEncoding\n\n    this.reflections = reflections\n    this.reflectionsNeedUpdate = true\n    const cubeRenderTarget = new THREE.WebGLCubeRenderTarget( 512, { format: THREE.RGBFormat, generateMipmaps: true, minFilter: THREE.LinearMipmapLinearFilter } )\n    this.cubeCamera = new THREE.CubeCamera( 0.1, 10_000, cubeRenderTarget )\n    this.scene.add( this.cubeCamera )\n\n    this.controls = new OrbitControls( this.camera, this.renderer.domElement )\n    this.controls.enableDamping = true\n    this.controls.dampingFactor = 0.1\n    this.controls.screenSpacePanning = true\n    this.controls.maxPolarAngle = Math.PI / 2\n    this.controls.panSpeed = 0.8\n    this.controls.rotateSpeed = 0.8\n\n    this.composer = new EffectComposer( this.renderer )\n\n    this.ssaoPass = new SSAOPass( this.scene, this.camera, this.container.offsetWidth, this.container.offsetHeight )\n    this.ssaoPass.kernelRadius = 0.03\n    this.ssaoPass.kernelSize = 16\n    this.ssaoPass.minDistance = 0.0002\n    this.ssaoPass.maxDistance = 10\n    this.ssaoPass.output = SSAOPass.OUTPUT.Default\n    this.composer.addPass( this.ssaoPass )\n\n    this.pauseSSAO = false\n    this.controls.addEventListener( 'start', () => { this.pauseSSAO = true } )\n    this.controls.addEventListener( 'end', () => { this.pauseSSAO = false } )\n\n    this.stats = new Stats()\n    this.container.appendChild( this.stats.dom )\n\n    window.addEventListener( 'resize', this.onWindowResize.bind( this ), false )\n\n    this.sectionPlaneHelper = new SectionPlaneHelper( this )\n    this.sceneManager = new ObjectManager( this )\n    this.selectionHelper = new SelectionHelper( this )\n\n    this.sectionPlaneHelper.createSectionPlane()\n\n    this.sceneLights()\n    this.animate()\n\n    this.loaders = []\n  }\n\n  sceneLights() {\n    let ambientLight = new THREE.AmbientLight( 0xffffff )\n    this.scene.add( ambientLight )\n\n    const lights = []\n    lights[ 0 ] = new THREE.PointLight( 0xffffff, 0.21, 0 )\n    lights[ 1 ] = new THREE.PointLight( 0xffffff, 0.21, 0 )\n    lights[ 2 ] = new THREE.PointLight( 0xffffff, 0.21, 0 )\n    lights[ 3 ] = new THREE.PointLight( 0xffffff, 0.21, 0 )\n\n    let factor = 1000\n    lights[ 0 ].position.set( 1 * factor, 1 * factor, 1 * factor )\n    lights[ 1 ].position.set( 1 * factor, -1 * factor, 1 * factor )\n    lights[ 2 ].position.set( -1 * factor, -1 * factor, 1 * factor )\n    lights[ 3 ].position.set( -1 * factor, 1 * factor, 1 * factor )\n\n    this.scene.add( lights[ 0 ] )\n    this.scene.add( lights[ 1 ] )\n    this.scene.add( lights[ 2 ] )\n    this.scene.add( lights[ 3 ] )\n\n    // let sphereSize = 0.2\n    // this.scene.add( new THREE.PointLightHelper( lights[ 0 ], sphereSize ) )\n    // this.scene.add( new THREE.PointLightHelper( lights[ 1 ], sphereSize ) )\n    // this.scene.add( new THREE.PointLightHelper( lights[ 2 ], sphereSize ) )\n    // this.scene.add( new THREE.PointLightHelper( lights[ 3 ], sphereSize ) )\n\n\n    const hemiLight = new THREE.HemisphereLight( 0xffffff, 0x0, 0.2 )\n    hemiLight.color.setHSL( 1, 1, 1 )\n    hemiLight.groundColor.setHSL( 0.095, 1, 0.75 )\n    hemiLight.up.set( 0, 0, 1 )\n    this.scene.add( hemiLight )\n\n    let axesHelper = new THREE.AxesHelper( 1 )\n    this.scene.add( axesHelper )\n\n    let group = new THREE.Group()\n    this.scene.add( group )\n  }\n\n  onWindowResize() {\n    this.camera.aspect = this.container.offsetWidth / this.container.offsetHeight\n    this.camera.updateProjectionMatrix()\n    this.renderer.setSize( this.container.offsetWidth, this.container.offsetHeight )\n    this.composer.setSize( this.container.offsetWidth, this.container.offsetHeight )\n  }\n\n  animate() {\n    requestAnimationFrame( this.animate.bind( this ) )\n    this.controls.update()\n    this.stats.begin()\n    this.render()\n    this.stats.end()\n  }\n\n  render() {\n    if ( this.reflections && this.reflectionsNeedUpdate ) {\n      // Note: scene based \"dynamic\" reflections need to be handled a bit more carefully, or else:\n      // GL ERROR :GL_INVALID_OPERATION : glDrawElements: Source and destination textures of the draw are the same.\n      // First remove the env map from all materials\n      for ( let obj of this.sceneManager.objects ) {\n        obj.material.envMap = null\n      }\n\n      // Second, set a scene background color (renderer is transparent by default)\n      // and then finally update the cubemap camera.\n      this.scene.background = new THREE.Color( '#F0F3F8' )\n      this.cubeCamera.update( this.renderer, this.scene )\n      this.scene.background = null\n\n      // Finally, re-set the env maps of all materials\n      for ( let obj of this.sceneManager.objects ) {\n        obj.material.envMap = this.cubeCamera.renderTarget.texture\n      }\n      this.reflectionsNeedUpdate = false\n    }\n\n\n    // Render as usual\n    // TODO: post processing SSAO sucks so much currently it's off by default\n    if ( this.postprocessing && !this.pauseSSAO && !this.renderer.localClippingEnabled ){\n      this.composer.render( this.scene, this.camera )\n    }\n    else {\n      this.renderer.render( this.scene, this.camera )\n    }\n  }\n\n  async loadObject( url, token ) {\n    let loader = new ViewerObjectLoader( this, url, token )\n    this.loaders.push( loader )\n    await loader.load()\n  }\n\n  dispose() {\n    // TODO\n  }\n}\n","import ObjectLoader from './ObjectLoader'\nimport Converter from './Converter'\n\n/**\n * Helper wrapper around the ObjectLoader class, with some built in assumptions.\n */\n\nexport default class ViewerObjectLoader {\n\n\n  constructor( parent, objectUrl, authToken ) {\n    this.viewer = parent\n    this.token = authToken || localStorage.getItem( 'AuthToken' )\n\n    if ( !this.token ) {\n      throw new Error( 'No suitable authorization token found.' )\n    }\n\n    // example url: `https://staging.speckle.dev/streams/a75ab4f10f/objects/f33645dc9a702de8af0af16bd5f655b0`\n    let url = new URL( objectUrl )\n\n    let segments = url.pathname.split( '/' )\n    if ( segments.length < 5 || url.pathname.indexOf( 'streams' ) === -1 || url.pathname.indexOf( 'objects' ) === -1 ) {\n      throw new Error( 'Unexpected object url format.' )\n    }\n\n    this.serverUrl = url.origin\n    this.streamId = segments[2]\n    this.objectId = segments[4]\n\n    this.loader = new ObjectLoader( {\n      serverUrl: this.serverUrl,\n      token: this.token,\n      streamId: this.streamId,\n      objectId: this.objectId,\n    } )\n\n    this.converter = new Converter( this.loader )\n  }\n\n  async load( ) {\n    let first = true\n    let current = 0\n    let total = 0\n    for await ( let obj of this.loader.getObjectIterator() ) {\n      if ( first ) {\n        ( async() => {\n          await this.converter.traverseAndConvert( obj, ( o ) => this.viewer.sceneManager.addObject( o ) )\n        } )()\n        first = false\n        total = obj.totalChildrenCount\n      }\n      current++\n      this.viewer.emit( 'load-progress', { progress: current/total, id: this.objectId } )\n    }\n  }\n}\n","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n'use strict';\n\nvar R = typeof Reflect === 'object' ? Reflect : null\nvar ReflectApply = R && typeof R.apply === 'function'\n  ? R.apply\n  : function ReflectApply(target, receiver, args) {\n    return Function.prototype.apply.call(target, receiver, args);\n  }\n\nvar ReflectOwnKeys\nif (R && typeof R.ownKeys === 'function') {\n  ReflectOwnKeys = R.ownKeys\n} else if (Object.getOwnPropertySymbols) {\n  ReflectOwnKeys = function ReflectOwnKeys(target) {\n    return Object.getOwnPropertyNames(target)\n      .concat(Object.getOwnPropertySymbols(target));\n  };\n} else {\n  ReflectOwnKeys = function ReflectOwnKeys(target) {\n    return Object.getOwnPropertyNames(target);\n  };\n}\n\nfunction ProcessEmitWarning(warning) {\n  if (console && console.warn) console.warn(warning);\n}\n\nvar NumberIsNaN = Number.isNaN || function NumberIsNaN(value) {\n  return value !== value;\n}\n\nfunction EventEmitter() {\n  EventEmitter.init.call(this);\n}\nmodule.exports = EventEmitter;\nmodule.exports.once = once;\n\n// Backwards-compat with node 0.10.x\nEventEmitter.EventEmitter = EventEmitter;\n\nEventEmitter.prototype._events = undefined;\nEventEmitter.prototype._eventsCount = 0;\nEventEmitter.prototype._maxListeners = undefined;\n\n// By default EventEmitters will print a warning if more than 10 listeners are\n// added to it. This is a useful default which helps finding memory leaks.\nvar defaultMaxListeners = 10;\n\nfunction checkListener(listener) {\n  if (typeof listener !== 'function') {\n    throw new TypeError('The \"listener\" argument must be of type Function. Received type ' + typeof listener);\n  }\n}\n\nObject.defineProperty(EventEmitter, 'defaultMaxListeners', {\n  enumerable: true,\n  get: function() {\n    return defaultMaxListeners;\n  },\n  set: function(arg) {\n    if (typeof arg !== 'number' || arg < 0 || NumberIsNaN(arg)) {\n      throw new RangeError('The value of \"defaultMaxListeners\" is out of range. It must be a non-negative number. Received ' + arg + '.');\n    }\n    defaultMaxListeners = arg;\n  }\n});\n\nEventEmitter.init = function() {\n\n  if (this._events === undefined ||\n      this._events === Object.getPrototypeOf(this)._events) {\n    this._events = Object.create(null);\n    this._eventsCount = 0;\n  }\n\n  this._maxListeners = this._maxListeners || undefined;\n};\n\n// Obviously not all Emitters should be limited to 10. This function allows\n// that to be increased. Set to zero for unlimited.\nEventEmitter.prototype.setMaxListeners = function setMaxListeners(n) {\n  if (typeof n !== 'number' || n < 0 || NumberIsNaN(n)) {\n    throw new RangeError('The value of \"n\" is out of range. It must be a non-negative number. Received ' + n + '.');\n  }\n  this._maxListeners = n;\n  return this;\n};\n\nfunction _getMaxListeners(that) {\n  if (that._maxListeners === undefined)\n    return EventEmitter.defaultMaxListeners;\n  return that._maxListeners;\n}\n\nEventEmitter.prototype.getMaxListeners = function getMaxListeners() {\n  return _getMaxListeners(this);\n};\n\nEventEmitter.prototype.emit = function emit(type) {\n  var args = [];\n  for (var i = 1; i < arguments.length; i++) args.push(arguments[i]);\n  var doError = (type === 'error');\n\n  var events = this._events;\n  if (events !== undefined)\n    doError = (doError && events.error === undefined);\n  else if (!doError)\n    return false;\n\n  // If there is no 'error' event listener then throw.\n  if (doError) {\n    var er;\n    if (args.length > 0)\n      er = args[0];\n    if (er instanceof Error) {\n      // Note: The comments on the `throw` lines are intentional, they show\n      // up in Node's output if this results in an unhandled exception.\n      throw er; // Unhandled 'error' event\n    }\n    // At least give some kind of context to the user\n    var err = new Error('Unhandled error.' + (er ? ' (' + er.message + ')' : ''));\n    err.context = er;\n    throw err; // Unhandled 'error' event\n  }\n\n  var handler = events[type];\n\n  if (handler === undefined)\n    return false;\n\n  if (typeof handler === 'function') {\n    ReflectApply(handler, this, args);\n  } else {\n    var len = handler.length;\n    var listeners = arrayClone(handler, len);\n    for (var i = 0; i < len; ++i)\n      ReflectApply(listeners[i], this, args);\n  }\n\n  return true;\n};\n\nfunction _addListener(target, type, listener, prepend) {\n  var m;\n  var events;\n  var existing;\n\n  checkListener(listener);\n\n  events = target._events;\n  if (events === undefined) {\n    events = target._events = Object.create(null);\n    target._eventsCount = 0;\n  } else {\n    // To avoid recursion in the case that type === \"newListener\"! Before\n    // adding it to the listeners, first emit \"newListener\".\n    if (events.newListener !== undefined) {\n      target.emit('newListener', type,\n                  listener.listener ? listener.listener : listener);\n\n      // Re-assign `events` because a newListener handler could have caused the\n      // this._events to be assigned to a new object\n      events = target._events;\n    }\n    existing = events[type];\n  }\n\n  if (existing === undefined) {\n    // Optimize the case of one listener. Don't need the extra array object.\n    existing = events[type] = listener;\n    ++target._eventsCount;\n  } else {\n    if (typeof existing === 'function') {\n      // Adding the second element, need to change to array.\n      existing = events[type] =\n        prepend ? [listener, existing] : [existing, listener];\n      // If we've already got an array, just append.\n    } else if (prepend) {\n      existing.unshift(listener);\n    } else {\n      existing.push(listener);\n    }\n\n    // Check for listener leak\n    m = _getMaxListeners(target);\n    if (m > 0 && existing.length > m && !existing.warned) {\n      existing.warned = true;\n      // No error code for this since it is a Warning\n      // eslint-disable-next-line no-restricted-syntax\n      var w = new Error('Possible EventEmitter memory leak detected. ' +\n                          existing.length + ' ' + String(type) + ' listeners ' +\n                          'added. Use emitter.setMaxListeners() to ' +\n                          'increase limit');\n      w.name = 'MaxListenersExceededWarning';\n      w.emitter = target;\n      w.type = type;\n      w.count = existing.length;\n      ProcessEmitWarning(w);\n    }\n  }\n\n  return target;\n}\n\nEventEmitter.prototype.addListener = function addListener(type, listener) {\n  return _addListener(this, type, listener, false);\n};\n\nEventEmitter.prototype.on = EventEmitter.prototype.addListener;\n\nEventEmitter.prototype.prependListener =\n    function prependListener(type, listener) {\n      return _addListener(this, type, listener, true);\n    };\n\nfunction onceWrapper() {\n  if (!this.fired) {\n    this.target.removeListener(this.type, this.wrapFn);\n    this.fired = true;\n    if (arguments.length === 0)\n      return this.listener.call(this.target);\n    return this.listener.apply(this.target, arguments);\n  }\n}\n\nfunction _onceWrap(target, type, listener) {\n  var state = { fired: false, wrapFn: undefined, target: target, type: type, listener: listener };\n  var wrapped = onceWrapper.bind(state);\n  wrapped.listener = listener;\n  state.wrapFn = wrapped;\n  return wrapped;\n}\n\nEventEmitter.prototype.once = function once(type, listener) {\n  checkListener(listener);\n  this.on(type, _onceWrap(this, type, listener));\n  return this;\n};\n\nEventEmitter.prototype.prependOnceListener =\n    function prependOnceListener(type, listener) {\n      checkListener(listener);\n      this.prependListener(type, _onceWrap(this, type, listener));\n      return this;\n    };\n\n// Emits a 'removeListener' event if and only if the listener was removed.\nEventEmitter.prototype.removeListener =\n    function removeListener(type, listener) {\n      var list, events, position, i, originalListener;\n\n      checkListener(listener);\n\n      events = this._events;\n      if (events === undefined)\n        return this;\n\n      list = events[type];\n      if (list === undefined)\n        return this;\n\n      if (list === listener || list.listener === listener) {\n        if (--this._eventsCount === 0)\n          this._events = Object.create(null);\n        else {\n          delete events[type];\n          if (events.removeListener)\n            this.emit('removeListener', type, list.listener || listener);\n        }\n      } else if (typeof list !== 'function') {\n        position = -1;\n\n        for (i = list.length - 1; i >= 0; i--) {\n          if (list[i] === listener || list[i].listener === listener) {\n            originalListener = list[i].listener;\n            position = i;\n            break;\n          }\n        }\n\n        if (position < 0)\n          return this;\n\n        if (position === 0)\n          list.shift();\n        else {\n          spliceOne(list, position);\n        }\n\n        if (list.length === 1)\n          events[type] = list[0];\n\n        if (events.removeListener !== undefined)\n          this.emit('removeListener', type, originalListener || listener);\n      }\n\n      return this;\n    };\n\nEventEmitter.prototype.off = EventEmitter.prototype.removeListener;\n\nEventEmitter.prototype.removeAllListeners =\n    function removeAllListeners(type) {\n      var listeners, events, i;\n\n      events = this._events;\n      if (events === undefined)\n        return this;\n\n      // not listening for removeListener, no need to emit\n      if (events.removeListener === undefined) {\n        if (arguments.length === 0) {\n          this._events = Object.create(null);\n          this._eventsCount = 0;\n        } else if (events[type] !== undefined) {\n          if (--this._eventsCount === 0)\n            this._events = Object.create(null);\n          else\n            delete events[type];\n        }\n        return this;\n      }\n\n      // emit removeListener for all listeners on all events\n      if (arguments.length === 0) {\n        var keys = Object.keys(events);\n        var key;\n        for (i = 0; i < keys.length; ++i) {\n          key = keys[i];\n          if (key === 'removeListener') continue;\n          this.removeAllListeners(key);\n        }\n        this.removeAllListeners('removeListener');\n        this._events = Object.create(null);\n        this._eventsCount = 0;\n        return this;\n      }\n\n      listeners = events[type];\n\n      if (typeof listeners === 'function') {\n        this.removeListener(type, listeners);\n      } else if (listeners !== undefined) {\n        // LIFO order\n        for (i = listeners.length - 1; i >= 0; i--) {\n          this.removeListener(type, listeners[i]);\n        }\n      }\n\n      return this;\n    };\n\nfunction _listeners(target, type, unwrap) {\n  var events = target._events;\n\n  if (events === undefined)\n    return [];\n\n  var evlistener = events[type];\n  if (evlistener === undefined)\n    return [];\n\n  if (typeof evlistener === 'function')\n    return unwrap ? [evlistener.listener || evlistener] : [evlistener];\n\n  return unwrap ?\n    unwrapListeners(evlistener) : arrayClone(evlistener, evlistener.length);\n}\n\nEventEmitter.prototype.listeners = function listeners(type) {\n  return _listeners(this, type, true);\n};\n\nEventEmitter.prototype.rawListeners = function rawListeners(type) {\n  return _listeners(this, type, false);\n};\n\nEventEmitter.listenerCount = function(emitter, type) {\n  if (typeof emitter.listenerCount === 'function') {\n    return emitter.listenerCount(type);\n  } else {\n    return listenerCount.call(emitter, type);\n  }\n};\n\nEventEmitter.prototype.listenerCount = listenerCount;\nfunction listenerCount(type) {\n  var events = this._events;\n\n  if (events !== undefined) {\n    var evlistener = events[type];\n\n    if (typeof evlistener === 'function') {\n      return 1;\n    } else if (evlistener !== undefined) {\n      return evlistener.length;\n    }\n  }\n\n  return 0;\n}\n\nEventEmitter.prototype.eventNames = function eventNames() {\n  return this._eventsCount > 0 ? ReflectOwnKeys(this._events) : [];\n};\n\nfunction arrayClone(arr, n) {\n  var copy = new Array(n);\n  for (var i = 0; i < n; ++i)\n    copy[i] = arr[i];\n  return copy;\n}\n\nfunction spliceOne(list, index) {\n  for (; index + 1 < list.length; index++)\n    list[index] = list[index + 1];\n  list.pop();\n}\n\nfunction unwrapListeners(arr) {\n  var ret = new Array(arr.length);\n  for (var i = 0; i < ret.length; ++i) {\n    ret[i] = arr[i].listener || arr[i];\n  }\n  return ret;\n}\n\nfunction once(emitter, name) {\n  return new Promise(function (resolve, reject) {\n    function eventListener() {\n      if (errorListener !== undefined) {\n        emitter.removeListener('error', errorListener);\n      }\n      resolve([].slice.call(arguments));\n    };\n    var errorListener;\n\n    // Adding an error listener is not optional because\n    // if an error is thrown on an event emitter we cannot\n    // guarantee that the actual event we are waiting will\n    // be fired. The result could be a silent way to create\n    // memory or file descriptor leaks, which is something\n    // we should avoid.\n    if (name !== 'error') {\n      errorListener = function errorListener(err) {\n        emitter.removeListener(name, eventListener);\n        reject(err);\n      };\n\n      emitter.once('error', errorListener);\n    }\n\n    emitter.once(name, eventListener);\n  });\n}\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nvar surrogate_pairs_1 = require(\"./surrogate-pairs\");\nvar HTML_ALPHA = ['apos', 'nbsp', 'iexcl', 'cent', 'pound', 'curren', 'yen', 'brvbar', 'sect', 'uml', 'copy', 'ordf', 'laquo', 'not', 'shy', 'reg', 'macr', 'deg', 'plusmn', 'sup2', 'sup3', 'acute', 'micro', 'para', 'middot', 'cedil', 'sup1', 'ordm', 'raquo', 'frac14', 'frac12', 'frac34', 'iquest', 'Agrave', 'Aacute', 'Acirc', 'Atilde', 'Auml', 'Aring', 'AElig', 'Ccedil', 'Egrave', 'Eacute', 'Ecirc', 'Euml', 'Igrave', 'Iacute', 'Icirc', 'Iuml', 'ETH', 'Ntilde', 'Ograve', 'Oacute', 'Ocirc', 'Otilde', 'Ouml', 'times', 'Oslash', 'Ugrave', 'Uacute', 'Ucirc', 'Uuml', 'Yacute', 'THORN', 'szlig', 'agrave', 'aacute', 'acirc', 'atilde', 'auml', 'aring', 'aelig', 'ccedil', 'egrave', 'eacute', 'ecirc', 'euml', 'igrave', 'iacute', 'icirc', 'iuml', 'eth', 'ntilde', 'ograve', 'oacute', 'ocirc', 'otilde', 'ouml', 'divide', 'oslash', 'ugrave', 'uacute', 'ucirc', 'uuml', 'yacute', 'thorn', 'yuml', 'quot', 'amp', 'lt', 'gt', 'OElig', 'oelig', 'Scaron', 'scaron', 'Yuml', 'circ', 'tilde', 'ensp', 'emsp', 'thinsp', 'zwnj', 'zwj', 'lrm', 'rlm', 'ndash', 'mdash', 'lsquo', 'rsquo', 'sbquo', 'ldquo', 'rdquo', 'bdquo', 'dagger', 'Dagger', 'permil', 'lsaquo', 'rsaquo', 'euro', 'fnof', 'Alpha', 'Beta', 'Gamma', 'Delta', 'Epsilon', 'Zeta', 'Eta', 'Theta', 'Iota', 'Kappa', 'Lambda', 'Mu', 'Nu', 'Xi', 'Omicron', 'Pi', 'Rho', 'Sigma', 'Tau', 'Upsilon', 'Phi', 'Chi', 'Psi', 'Omega', 'alpha', 'beta', 'gamma', 'delta', 'epsilon', 'zeta', 'eta', 'theta', 'iota', 'kappa', 'lambda', 'mu', 'nu', 'xi', 'omicron', 'pi', 'rho', 'sigmaf', 'sigma', 'tau', 'upsilon', 'phi', 'chi', 'psi', 'omega', 'thetasym', 'upsih', 'piv', 'bull', 'hellip', 'prime', 'Prime', 'oline', 'frasl', 'weierp', 'image', 'real', 'trade', 'alefsym', 'larr', 'uarr', 'rarr', 'darr', 'harr', 'crarr', 'lArr', 'uArr', 'rArr', 'dArr', 'hArr', 'forall', 'part', 'exist', 'empty', 'nabla', 'isin', 'notin', 'ni', 'prod', 'sum', 'minus', 'lowast', 'radic', 'prop', 'infin', 'ang', 'and', 'or', 'cap', 'cup', 'int', 'there4', 'sim', 'cong', 'asymp', 'ne', 'equiv', 'le', 'ge', 'sub', 'sup', 'nsub', 'sube', 'supe', 'oplus', 'otimes', 'perp', 'sdot', 'lceil', 'rceil', 'lfloor', 'rfloor', 'lang', 'rang', 'loz', 'spades', 'clubs', 'hearts', 'diams'];\nvar HTML_CODES = [39, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 34, 38, 60, 62, 338, 339, 352, 353, 376, 710, 732, 8194, 8195, 8201, 8204, 8205, 8206, 8207, 8211, 8212, 8216, 8217, 8218, 8220, 8221, 8222, 8224, 8225, 8240, 8249, 8250, 8364, 402, 913, 914, 915, 916, 917, 918, 919, 920, 921, 922, 923, 924, 925, 926, 927, 928, 929, 931, 932, 933, 934, 935, 936, 937, 945, 946, 947, 948, 949, 950, 951, 952, 953, 954, 955, 956, 957, 958, 959, 960, 961, 962, 963, 964, 965, 966, 967, 968, 969, 977, 978, 982, 8226, 8230, 8242, 8243, 8254, 8260, 8472, 8465, 8476, 8482, 8501, 8592, 8593, 8594, 8595, 8596, 8629, 8656, 8657, 8658, 8659, 8660, 8704, 8706, 8707, 8709, 8711, 8712, 8713, 8715, 8719, 8721, 8722, 8727, 8730, 8733, 8734, 8736, 8743, 8744, 8745, 8746, 8747, 8756, 8764, 8773, 8776, 8800, 8801, 8804, 8805, 8834, 8835, 8836, 8838, 8839, 8853, 8855, 8869, 8901, 8968, 8969, 8970, 8971, 9001, 9002, 9674, 9824, 9827, 9829, 9830];\nvar alphaIndex = {};\nvar numIndex = {};\n(function () {\n    var i = 0;\n    var length = HTML_ALPHA.length;\n    while (i < length) {\n        var a = HTML_ALPHA[i];\n        var c = HTML_CODES[i];\n        alphaIndex[a] = String.fromCharCode(c);\n        numIndex[c] = a;\n        i++;\n    }\n})();\nvar Html4Entities = /** @class */ (function () {\n    function Html4Entities() {\n    }\n    Html4Entities.prototype.decode = function (str) {\n        if (!str || !str.length) {\n            return '';\n        }\n        return str.replace(/&(#?[\\w\\d]+);?/g, function (s, entity) {\n            var chr;\n            if (entity.charAt(0) === \"#\") {\n                var code = entity.charAt(1).toLowerCase() === 'x' ?\n                    parseInt(entity.substr(2), 16) :\n                    parseInt(entity.substr(1));\n                if (!isNaN(code) || code >= -32768) {\n                    if (code <= 65535) {\n                        chr = String.fromCharCode(code);\n                    }\n                    else {\n                        chr = surrogate_pairs_1.fromCodePoint(code);\n                    }\n                }\n            }\n            else {\n                chr = alphaIndex[entity];\n            }\n            return chr || s;\n        });\n    };\n    Html4Entities.decode = function (str) {\n        return new Html4Entities().decode(str);\n    };\n    Html4Entities.prototype.encode = function (str) {\n        if (!str || !str.length) {\n            return '';\n        }\n        var strLength = str.length;\n        var result = '';\n        var i = 0;\n        while (i < strLength) {\n            var alpha = numIndex[str.charCodeAt(i)];\n            result += alpha ? \"&\" + alpha + \";\" : str.charAt(i);\n            i++;\n        }\n        return result;\n    };\n    Html4Entities.encode = function (str) {\n        return new Html4Entities().encode(str);\n    };\n    Html4Entities.prototype.encodeNonUTF = function (str) {\n        if (!str || !str.length) {\n            return '';\n        }\n        var strLength = str.length;\n        var result = '';\n        var i = 0;\n        while (i < strLength) {\n            var cc = str.charCodeAt(i);\n            var alpha = numIndex[cc];\n            if (alpha) {\n                result += \"&\" + alpha + \";\";\n            }\n            else if (cc < 32 || cc > 126) {\n                if (cc >= surrogate_pairs_1.highSurrogateFrom && cc <= surrogate_pairs_1.highSurrogateTo) {\n                    result += '&#' + surrogate_pairs_1.getCodePoint(str, i) + ';';\n                    i++;\n                }\n                else {\n                    result += '&#' + cc + ';';\n                }\n            }\n            else {\n                result += str.charAt(i);\n            }\n            i++;\n        }\n        return result;\n    };\n    Html4Entities.encodeNonUTF = function (str) {\n        return new Html4Entities().encodeNonUTF(str);\n    };\n    Html4Entities.prototype.encodeNonASCII = function (str) {\n        if (!str || !str.length) {\n            return '';\n        }\n        var strLength = str.length;\n        var result = '';\n        var i = 0;\n        while (i < strLength) {\n            var c = str.charCodeAt(i);\n            if (c <= 255) {\n                result += str[i++];\n                continue;\n            }\n            if (c >= surrogate_pairs_1.highSurrogateFrom && c <= surrogate_pairs_1.highSurrogateTo) {\n                result += '&#' + surrogate_pairs_1.getCodePoint(str, i) + ';';\n                i++;\n            }\n            else {\n                result += '&#' + c + ';';\n            }\n            i++;\n        }\n        return result;\n    };\n    Html4Entities.encodeNonASCII = function (str) {\n        return new Html4Entities().encodeNonASCII(str);\n    };\n    return Html4Entities;\n}());\nexports.Html4Entities = Html4Entities;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nvar surrogate_pairs_1 = require(\"./surrogate-pairs\");\nvar ENTITIES = [['Aacute', [193]], ['aacute', [225]], ['Abreve', [258]], ['abreve', [259]], ['ac', [8766]], ['acd', [8767]], ['acE', [8766, 819]], ['Acirc', [194]], ['acirc', [226]], ['acute', [180]], ['Acy', [1040]], ['acy', [1072]], ['AElig', [198]], ['aelig', [230]], ['af', [8289]], ['Afr', [120068]], ['afr', [120094]], ['Agrave', [192]], ['agrave', [224]], ['alefsym', [8501]], ['aleph', [8501]], ['Alpha', [913]], ['alpha', [945]], ['Amacr', [256]], ['amacr', [257]], ['amalg', [10815]], ['amp', [38]], ['AMP', [38]], ['andand', [10837]], ['And', [10835]], ['and', [8743]], ['andd', [10844]], ['andslope', [10840]], ['andv', [10842]], ['ang', [8736]], ['ange', [10660]], ['angle', [8736]], ['angmsdaa', [10664]], ['angmsdab', [10665]], ['angmsdac', [10666]], ['angmsdad', [10667]], ['angmsdae', [10668]], ['angmsdaf', [10669]], ['angmsdag', [10670]], ['angmsdah', [10671]], ['angmsd', [8737]], ['angrt', [8735]], ['angrtvb', [8894]], ['angrtvbd', [10653]], ['angsph', [8738]], ['angst', [197]], ['angzarr', [9084]], ['Aogon', [260]], ['aogon', [261]], ['Aopf', [120120]], ['aopf', [120146]], ['apacir', [10863]], ['ap', [8776]], ['apE', [10864]], ['ape', [8778]], ['apid', [8779]], ['apos', [39]], ['ApplyFunction', [8289]], ['approx', [8776]], ['approxeq', [8778]], ['Aring', [197]], ['aring', [229]], ['Ascr', [119964]], ['ascr', [119990]], ['Assign', [8788]], ['ast', [42]], ['asymp', [8776]], ['asympeq', [8781]], ['Atilde', [195]], ['atilde', [227]], ['Auml', [196]], ['auml', [228]], ['awconint', [8755]], ['awint', [10769]], ['backcong', [8780]], ['backepsilon', [1014]], ['backprime', [8245]], ['backsim', [8765]], ['backsimeq', [8909]], ['Backslash', [8726]], ['Barv', [10983]], ['barvee', [8893]], ['barwed', [8965]], ['Barwed', [8966]], ['barwedge', [8965]], ['bbrk', [9141]], ['bbrktbrk', [9142]], ['bcong', [8780]], ['Bcy', [1041]], ['bcy', [1073]], ['bdquo', [8222]], ['becaus', [8757]], ['because', [8757]], ['Because', [8757]], ['bemptyv', [10672]], ['bepsi', [1014]], ['bernou', [8492]], ['Bernoullis', [8492]], ['Beta', [914]], ['beta', [946]], ['beth', [8502]], ['between', [8812]], ['Bfr', [120069]], ['bfr', [120095]], ['bigcap', [8898]], ['bigcirc', [9711]], ['bigcup', [8899]], ['bigodot', [10752]], ['bigoplus', [10753]], ['bigotimes', [10754]], ['bigsqcup', [10758]], ['bigstar', [9733]], ['bigtriangledown', [9661]], ['bigtriangleup', [9651]], ['biguplus', [10756]], ['bigvee', [8897]], ['bigwedge', [8896]], ['bkarow', [10509]], ['blacklozenge', [10731]], ['blacksquare', [9642]], ['blacktriangle', [9652]], ['blacktriangledown', [9662]], ['blacktriangleleft', [9666]], ['blacktriangleright', [9656]], ['blank', [9251]], ['blk12', [9618]], ['blk14', [9617]], ['blk34', [9619]], ['block', [9608]], ['bne', [61, 8421]], ['bnequiv', [8801, 8421]], ['bNot', [10989]], ['bnot', [8976]], ['Bopf', [120121]], ['bopf', [120147]], ['bot', [8869]], ['bottom', [8869]], ['bowtie', [8904]], ['boxbox', [10697]], ['boxdl', [9488]], ['boxdL', [9557]], ['boxDl', [9558]], ['boxDL', [9559]], ['boxdr', [9484]], ['boxdR', [9554]], ['boxDr', [9555]], ['boxDR', [9556]], ['boxh', [9472]], ['boxH', [9552]], ['boxhd', [9516]], ['boxHd', [9572]], ['boxhD', [9573]], ['boxHD', [9574]], ['boxhu', [9524]], ['boxHu', [9575]], ['boxhU', [9576]], ['boxHU', [9577]], ['boxminus', [8863]], ['boxplus', [8862]], ['boxtimes', [8864]], ['boxul', [9496]], ['boxuL', [9563]], ['boxUl', [9564]], ['boxUL', [9565]], ['boxur', [9492]], ['boxuR', [9560]], ['boxUr', [9561]], ['boxUR', [9562]], ['boxv', [9474]], ['boxV', [9553]], ['boxvh', [9532]], ['boxvH', [9578]], ['boxVh', [9579]], ['boxVH', [9580]], ['boxvl', [9508]], ['boxvL', [9569]], ['boxVl', [9570]], ['boxVL', [9571]], ['boxvr', [9500]], ['boxvR', [9566]], ['boxVr', [9567]], ['boxVR', [9568]], ['bprime', [8245]], ['breve', [728]], ['Breve', [728]], ['brvbar', [166]], ['bscr', [119991]], ['Bscr', [8492]], ['bsemi', [8271]], ['bsim', [8765]], ['bsime', [8909]], ['bsolb', [10693]], ['bsol', [92]], ['bsolhsub', [10184]], ['bull', [8226]], ['bullet', [8226]], ['bump', [8782]], ['bumpE', [10926]], ['bumpe', [8783]], ['Bumpeq', [8782]], ['bumpeq', [8783]], ['Cacute', [262]], ['cacute', [263]], ['capand', [10820]], ['capbrcup', [10825]], ['capcap', [10827]], ['cap', [8745]], ['Cap', [8914]], ['capcup', [10823]], ['capdot', [10816]], ['CapitalDifferentialD', [8517]], ['caps', [8745, 65024]], ['caret', [8257]], ['caron', [711]], ['Cayleys', [8493]], ['ccaps', [10829]], ['Ccaron', [268]], ['ccaron', [269]], ['Ccedil', [199]], ['ccedil', [231]], ['Ccirc', [264]], ['ccirc', [265]], ['Cconint', [8752]], ['ccups', [10828]], ['ccupssm', [10832]], ['Cdot', [266]], ['cdot', [267]], ['cedil', [184]], ['Cedilla', [184]], ['cemptyv', [10674]], ['cent', [162]], ['centerdot', [183]], ['CenterDot', [183]], ['cfr', [120096]], ['Cfr', [8493]], ['CHcy', [1063]], ['chcy', [1095]], ['check', [10003]], ['checkmark', [10003]], ['Chi', [935]], ['chi', [967]], ['circ', [710]], ['circeq', [8791]], ['circlearrowleft', [8634]], ['circlearrowright', [8635]], ['circledast', [8859]], ['circledcirc', [8858]], ['circleddash', [8861]], ['CircleDot', [8857]], ['circledR', [174]], ['circledS', [9416]], ['CircleMinus', [8854]], ['CirclePlus', [8853]], ['CircleTimes', [8855]], ['cir', [9675]], ['cirE', [10691]], ['cire', [8791]], ['cirfnint', [10768]], ['cirmid', [10991]], ['cirscir', [10690]], ['ClockwiseContourIntegral', [8754]], ['clubs', [9827]], ['clubsuit', [9827]], ['colon', [58]], ['Colon', [8759]], ['Colone', [10868]], ['colone', [8788]], ['coloneq', [8788]], ['comma', [44]], ['commat', [64]], ['comp', [8705]], ['compfn', [8728]], ['complement', [8705]], ['complexes', [8450]], ['cong', [8773]], ['congdot', [10861]], ['Congruent', [8801]], ['conint', [8750]], ['Conint', [8751]], ['ContourIntegral', [8750]], ['copf', [120148]], ['Copf', [8450]], ['coprod', [8720]], ['Coproduct', [8720]], ['copy', [169]], ['COPY', [169]], ['copysr', [8471]], ['CounterClockwiseContourIntegral', [8755]], ['crarr', [8629]], ['cross', [10007]], ['Cross', [10799]], ['Cscr', [119966]], ['cscr', [119992]], ['csub', [10959]], ['csube', [10961]], ['csup', [10960]], ['csupe', [10962]], ['ctdot', [8943]], ['cudarrl', [10552]], ['cudarrr', [10549]], ['cuepr', [8926]], ['cuesc', [8927]], ['cularr', [8630]], ['cularrp', [10557]], ['cupbrcap', [10824]], ['cupcap', [10822]], ['CupCap', [8781]], ['cup', [8746]], ['Cup', [8915]], ['cupcup', [10826]], ['cupdot', [8845]], ['cupor', [10821]], ['cups', [8746, 65024]], ['curarr', [8631]], ['curarrm', [10556]], ['curlyeqprec', [8926]], ['curlyeqsucc', [8927]], ['curlyvee', [8910]], ['curlywedge', [8911]], ['curren', [164]], ['curvearrowleft', [8630]], ['curvearrowright', [8631]], ['cuvee', [8910]], ['cuwed', [8911]], ['cwconint', [8754]], ['cwint', [8753]], ['cylcty', [9005]], ['dagger', [8224]], ['Dagger', [8225]], ['daleth', [8504]], ['darr', [8595]], ['Darr', [8609]], ['dArr', [8659]], ['dash', [8208]], ['Dashv', [10980]], ['dashv', [8867]], ['dbkarow', [10511]], ['dblac', [733]], ['Dcaron', [270]], ['dcaron', [271]], ['Dcy', [1044]], ['dcy', [1076]], ['ddagger', [8225]], ['ddarr', [8650]], ['DD', [8517]], ['dd', [8518]], ['DDotrahd', [10513]], ['ddotseq', [10871]], ['deg', [176]], ['Del', [8711]], ['Delta', [916]], ['delta', [948]], ['demptyv', [10673]], ['dfisht', [10623]], ['Dfr', [120071]], ['dfr', [120097]], ['dHar', [10597]], ['dharl', [8643]], ['dharr', [8642]], ['DiacriticalAcute', [180]], ['DiacriticalDot', [729]], ['DiacriticalDoubleAcute', [733]], ['DiacriticalGrave', [96]], ['DiacriticalTilde', [732]], ['diam', [8900]], ['diamond', [8900]], ['Diamond', [8900]], ['diamondsuit', [9830]], ['diams', [9830]], ['die', [168]], ['DifferentialD', [8518]], ['digamma', [989]], ['disin', [8946]], ['div', [247]], ['divide', [247]], ['divideontimes', [8903]], ['divonx', [8903]], ['DJcy', [1026]], ['djcy', [1106]], ['dlcorn', [8990]], ['dlcrop', [8973]], ['dollar', [36]], ['Dopf', [120123]], ['dopf', [120149]], ['Dot', [168]], ['dot', [729]], ['DotDot', [8412]], ['doteq', [8784]], ['doteqdot', [8785]], ['DotEqual', [8784]], ['dotminus', [8760]], ['dotplus', [8724]], ['dotsquare', [8865]], ['doublebarwedge', [8966]], ['DoubleContourIntegral', [8751]], ['DoubleDot', [168]], ['DoubleDownArrow', [8659]], ['DoubleLeftArrow', [8656]], ['DoubleLeftRightArrow', [8660]], ['DoubleLeftTee', [10980]], ['DoubleLongLeftArrow', [10232]], ['DoubleLongLeftRightArrow', [10234]], ['DoubleLongRightArrow', [10233]], ['DoubleRightArrow', [8658]], ['DoubleRightTee', [8872]], ['DoubleUpArrow', [8657]], ['DoubleUpDownArrow', [8661]], ['DoubleVerticalBar', [8741]], ['DownArrowBar', [10515]], ['downarrow', [8595]], ['DownArrow', [8595]], ['Downarrow', [8659]], ['DownArrowUpArrow', [8693]], ['DownBreve', [785]], ['downdownarrows', [8650]], ['downharpoonleft', [8643]], ['downharpoonright', [8642]], ['DownLeftRightVector', [10576]], ['DownLeftTeeVector', [10590]], ['DownLeftVectorBar', [10582]], ['DownLeftVector', [8637]], ['DownRightTeeVector', [10591]], ['DownRightVectorBar', [10583]], ['DownRightVector', [8641]], ['DownTeeArrow', [8615]], ['DownTee', [8868]], ['drbkarow', [10512]], ['drcorn', [8991]], ['drcrop', [8972]], ['Dscr', [119967]], ['dscr', [119993]], ['DScy', [1029]], ['dscy', [1109]], ['dsol', [10742]], ['Dstrok', [272]], ['dstrok', [273]], ['dtdot', [8945]], ['dtri', [9663]], ['dtrif', [9662]], ['duarr', [8693]], ['duhar', [10607]], ['dwangle', [10662]], ['DZcy', [1039]], ['dzcy', [1119]], ['dzigrarr', [10239]], ['Eacute', [201]], ['eacute', [233]], ['easter', [10862]], ['Ecaron', [282]], ['ecaron', [283]], ['Ecirc', [202]], ['ecirc', [234]], ['ecir', [8790]], ['ecolon', [8789]], ['Ecy', [1069]], ['ecy', [1101]], ['eDDot', [10871]], ['Edot', [278]], ['edot', [279]], ['eDot', [8785]], ['ee', [8519]], ['efDot', [8786]], ['Efr', [120072]], ['efr', [120098]], ['eg', [10906]], ['Egrave', [200]], ['egrave', [232]], ['egs', [10902]], ['egsdot', [10904]], ['el', [10905]], ['Element', [8712]], ['elinters', [9191]], ['ell', [8467]], ['els', [10901]], ['elsdot', [10903]], ['Emacr', [274]], ['emacr', [275]], ['empty', [8709]], ['emptyset', [8709]], ['EmptySmallSquare', [9723]], ['emptyv', [8709]], ['EmptyVerySmallSquare', [9643]], ['emsp13', [8196]], ['emsp14', [8197]], ['emsp', [8195]], ['ENG', [330]], ['eng', [331]], ['ensp', [8194]], ['Eogon', [280]], ['eogon', [281]], ['Eopf', [120124]], ['eopf', [120150]], ['epar', [8917]], ['eparsl', [10723]], ['eplus', [10865]], ['epsi', [949]], ['Epsilon', [917]], ['epsilon', [949]], ['epsiv', [1013]], ['eqcirc', [8790]], ['eqcolon', [8789]], ['eqsim', [8770]], ['eqslantgtr', [10902]], ['eqslantless', [10901]], ['Equal', [10869]], ['equals', [61]], ['EqualTilde', [8770]], ['equest', [8799]], ['Equilibrium', [8652]], ['equiv', [8801]], ['equivDD', [10872]], ['eqvparsl', [10725]], ['erarr', [10609]], ['erDot', [8787]], ['escr', [8495]], ['Escr', [8496]], ['esdot', [8784]], ['Esim', [10867]], ['esim', [8770]], ['Eta', [919]], ['eta', [951]], ['ETH', [208]], ['eth', [240]], ['Euml', [203]], ['euml', [235]], ['euro', [8364]], ['excl', [33]], ['exist', [8707]], ['Exists', [8707]], ['expectation', [8496]], ['exponentiale', [8519]], ['ExponentialE', [8519]], ['fallingdotseq', [8786]], ['Fcy', [1060]], ['fcy', [1092]], ['female', [9792]], ['ffilig', [64259]], ['fflig', [64256]], ['ffllig', [64260]], ['Ffr', [120073]], ['ffr', [120099]], ['filig', [64257]], ['FilledSmallSquare', [9724]], ['FilledVerySmallSquare', [9642]], ['fjlig', [102, 106]], ['flat', [9837]], ['fllig', [64258]], ['fltns', [9649]], ['fnof', [402]], ['Fopf', [120125]], ['fopf', [120151]], ['forall', [8704]], ['ForAll', [8704]], ['fork', [8916]], ['forkv', [10969]], ['Fouriertrf', [8497]], ['fpartint', [10765]], ['frac12', [189]], ['frac13', [8531]], ['frac14', [188]], ['frac15', [8533]], 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['isinsv', [8947]], ['isinv', [8712]], ['it', [8290]], ['Itilde', [296]], ['itilde', [297]], ['Iukcy', [1030]], ['iukcy', [1110]], ['Iuml', [207]], ['iuml', [239]], ['Jcirc', [308]], ['jcirc', [309]], ['Jcy', [1049]], ['jcy', [1081]], ['Jfr', [120077]], ['jfr', [120103]], ['jmath', [567]], ['Jopf', [120129]], ['jopf', [120155]], ['Jscr', [119973]], ['jscr', [119999]], ['Jsercy', [1032]], ['jsercy', [1112]], ['Jukcy', [1028]], ['jukcy', [1108]], ['Kappa', [922]], ['kappa', [954]], ['kappav', [1008]], ['Kcedil', [310]], ['kcedil', [311]], ['Kcy', [1050]], ['kcy', [1082]], ['Kfr', [120078]], ['kfr', [120104]], ['kgreen', [312]], ['KHcy', [1061]], ['khcy', [1093]], ['KJcy', [1036]], ['kjcy', [1116]], ['Kopf', [120130]], ['kopf', [120156]], ['Kscr', [119974]], ['kscr', [120000]], ['lAarr', [8666]], ['Lacute', [313]], ['lacute', [314]], ['laemptyv', [10676]], ['lagran', [8466]], ['Lambda', [923]], ['lambda', [955]], ['lang', [10216]], ['Lang', [10218]], ['langd', [10641]], ['langle', 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['LeftArrowRightArrow', [8646]], ['leftarrowtail', [8610]], ['LeftCeiling', [8968]], ['LeftDoubleBracket', [10214]], ['LeftDownTeeVector', [10593]], ['LeftDownVectorBar', [10585]], ['LeftDownVector', [8643]], ['LeftFloor', [8970]], ['leftharpoondown', [8637]], ['leftharpoonup', [8636]], ['leftleftarrows', [8647]], ['leftrightarrow', [8596]], ['LeftRightArrow', [8596]], ['Leftrightarrow', [8660]], ['leftrightarrows', [8646]], ['leftrightharpoons', [8651]], ['leftrightsquigarrow', [8621]], ['LeftRightVector', [10574]], ['LeftTeeArrow', [8612]], ['LeftTee', [8867]], ['LeftTeeVector', [10586]], ['leftthreetimes', [8907]], ['LeftTriangleBar', [10703]], ['LeftTriangle', [8882]], ['LeftTriangleEqual', [8884]], ['LeftUpDownVector', [10577]], ['LeftUpTeeVector', [10592]], ['LeftUpVectorBar', [10584]], ['LeftUpVector', [8639]], ['LeftVectorBar', [10578]], ['LeftVector', [8636]], ['lEg', [10891]], ['leg', [8922]], ['leq', [8804]], ['leqq', [8806]], ['leqslant', [10877]], ['lescc', [10920]], ['les', [10877]], ['lesdot', [10879]], ['lesdoto', [10881]], ['lesdotor', [10883]], ['lesg', [8922, 65024]], ['lesges', [10899]], ['lessapprox', [10885]], ['lessdot', [8918]], ['lesseqgtr', [8922]], ['lesseqqgtr', [10891]], ['LessEqualGreater', [8922]], ['LessFullEqual', [8806]], ['LessGreater', [8822]], ['lessgtr', [8822]], ['LessLess', [10913]], ['lesssim', [8818]], ['LessSlantEqual', [10877]], ['LessTilde', [8818]], ['lfisht', [10620]], ['lfloor', [8970]], ['Lfr', [120079]], ['lfr', [120105]], ['lg', [8822]], ['lgE', [10897]], ['lHar', [10594]], ['lhard', [8637]], ['lharu', [8636]], ['lharul', [10602]], ['lhblk', [9604]], ['LJcy', [1033]], ['ljcy', [1113]], ['llarr', [8647]], ['ll', [8810]], ['Ll', [8920]], ['llcorner', [8990]], ['Lleftarrow', [8666]], ['llhard', [10603]], ['lltri', [9722]], ['Lmidot', [319]], ['lmidot', [320]], ['lmoustache', [9136]], ['lmoust', [9136]], ['lnap', [10889]], ['lnapprox', [10889]], ['lne', [10887]], ['lnE', [8808]], ['lneq', [10887]], ['lneqq', 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['minusb', [8863]], ['minus', [8722]], ['minusd', [8760]], ['minusdu', [10794]], ['MinusPlus', [8723]], ['mlcp', [10971]], ['mldr', [8230]], ['mnplus', [8723]], ['models', [8871]], ['Mopf', [120132]], ['mopf', [120158]], ['mp', [8723]], ['mscr', [120002]], ['Mscr', [8499]], ['mstpos', [8766]], ['Mu', [924]], ['mu', [956]], ['multimap', [8888]], ['mumap', [8888]], ['nabla', [8711]], ['Nacute', [323]], ['nacute', [324]], ['nang', [8736, 8402]], ['nap', [8777]], ['napE', [10864, 824]], ['napid', [8779, 824]], ['napos', [329]], ['napprox', [8777]], ['natural', [9838]], ['naturals', [8469]], ['natur', [9838]], ['nbsp', [160]], ['nbump', [8782, 824]], ['nbumpe', [8783, 824]], ['ncap', [10819]], ['Ncaron', [327]], ['ncaron', [328]], ['Ncedil', [325]], ['ncedil', [326]], ['ncong', [8775]], ['ncongdot', [10861, 824]], ['ncup', [10818]], ['Ncy', [1053]], ['ncy', [1085]], ['ndash', [8211]], ['nearhk', [10532]], ['nearr', [8599]], ['neArr', [8663]], ['nearrow', [8599]], ['ne', [8800]], ['nedot', 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[10703, 824]], ['NotLeftTriangle', [8938]], ['NotLeftTriangleEqual', [8940]], ['NotLess', [8814]], ['NotLessEqual', [8816]], ['NotLessGreater', [8824]], ['NotLessLess', [8810, 824]], ['NotLessSlantEqual', [10877, 824]], ['NotLessTilde', [8820]], ['NotNestedGreaterGreater', [10914, 824]], ['NotNestedLessLess', [10913, 824]], ['notni', [8716]], ['notniva', [8716]], ['notnivb', [8958]], ['notnivc', [8957]], ['NotPrecedes', [8832]], ['NotPrecedesEqual', [10927, 824]], ['NotPrecedesSlantEqual', [8928]], ['NotReverseElement', [8716]], ['NotRightTriangleBar', [10704, 824]], ['NotRightTriangle', [8939]], ['NotRightTriangleEqual', [8941]], ['NotSquareSubset', [8847, 824]], ['NotSquareSubsetEqual', [8930]], ['NotSquareSuperset', [8848, 824]], ['NotSquareSupersetEqual', [8931]], ['NotSubset', [8834, 8402]], ['NotSubsetEqual', [8840]], ['NotSucceeds', [8833]], ['NotSucceedsEqual', [10928, 824]], ['NotSucceedsSlantEqual', [8929]], ['NotSucceedsTilde', [8831, 824]], ['NotSuperset', [8835, 8402]], ['NotSupersetEqual', [8841]], ['NotTilde', [8769]], ['NotTildeEqual', [8772]], ['NotTildeFullEqual', [8775]], ['NotTildeTilde', [8777]], ['NotVerticalBar', [8740]], ['nparallel', [8742]], ['npar', [8742]], ['nparsl', [11005, 8421]], ['npart', [8706, 824]], ['npolint', [10772]], ['npr', [8832]], ['nprcue', [8928]], ['nprec', [8832]], ['npreceq', [10927, 824]], ['npre', [10927, 824]], ['nrarrc', [10547, 824]], ['nrarr', [8603]], ['nrArr', [8655]], ['nrarrw', [8605, 824]], ['nrightarrow', [8603]], ['nRightarrow', [8655]], ['nrtri', [8939]], ['nrtrie', [8941]], ['nsc', [8833]], ['nsccue', [8929]], ['nsce', [10928, 824]], ['Nscr', [119977]], ['nscr', [120003]], ['nshortmid', [8740]], ['nshortparallel', [8742]], ['nsim', [8769]], ['nsime', [8772]], ['nsimeq', [8772]], ['nsmid', [8740]], ['nspar', [8742]], ['nsqsube', [8930]], ['nsqsupe', [8931]], ['nsub', [8836]], ['nsubE', [10949, 824]], ['nsube', [8840]], ['nsubset', [8834, 8402]], ['nsubseteq', [8840]], ['nsubseteqq', [10949, 824]], 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['ocirc', [244]], ['ocir', [8858]], ['Ocy', [1054]], ['ocy', [1086]], ['odash', [8861]], ['Odblac', [336]], ['odblac', [337]], ['odiv', [10808]], ['odot', [8857]], ['odsold', [10684]], ['OElig', [338]], ['oelig', [339]], ['ofcir', [10687]], ['Ofr', [120082]], ['ofr', [120108]], ['ogon', [731]], ['Ograve', [210]], ['ograve', [242]], ['ogt', [10689]], ['ohbar', [10677]], ['ohm', [937]], ['oint', [8750]], ['olarr', [8634]], ['olcir', [10686]], ['olcross', [10683]], ['oline', [8254]], ['olt', [10688]], ['Omacr', [332]], ['omacr', [333]], ['Omega', [937]], ['omega', [969]], ['Omicron', [927]], ['omicron', [959]], ['omid', [10678]], ['ominus', [8854]], ['Oopf', [120134]], ['oopf', [120160]], ['opar', [10679]], ['OpenCurlyDoubleQuote', [8220]], ['OpenCurlyQuote', [8216]], ['operp', [10681]], ['oplus', [8853]], ['orarr', [8635]], ['Or', [10836]], ['or', [8744]], ['ord', [10845]], ['order', [8500]], ['orderof', [8500]], ['ordf', [170]], ['ordm', [186]], ['origof', [8886]], ['oror', [10838]], ['orslope', [10839]], ['orv', [10843]], ['oS', [9416]], ['Oscr', [119978]], ['oscr', [8500]], ['Oslash', [216]], ['oslash', [248]], ['osol', [8856]], ['Otilde', [213]], ['otilde', [245]], ['otimesas', [10806]], ['Otimes', [10807]], ['otimes', [8855]], ['Ouml', [214]], ['ouml', [246]], ['ovbar', [9021]], ['OverBar', [8254]], ['OverBrace', [9182]], ['OverBracket', [9140]], ['OverParenthesis', [9180]], ['para', [182]], ['parallel', [8741]], ['par', [8741]], ['parsim', [10995]], ['parsl', [11005]], ['part', [8706]], ['PartialD', [8706]], ['Pcy', [1055]], ['pcy', [1087]], ['percnt', [37]], ['period', [46]], ['permil', [8240]], ['perp', [8869]], ['pertenk', [8241]], ['Pfr', [120083]], ['pfr', [120109]], ['Phi', [934]], ['phi', [966]], ['phiv', [981]], ['phmmat', [8499]], ['phone', [9742]], ['Pi', [928]], ['pi', [960]], ['pitchfork', [8916]], ['piv', [982]], ['planck', [8463]], ['planckh', [8462]], ['plankv', [8463]], ['plusacir', [10787]], ['plusb', [8862]], ['pluscir', [10786]], ['plus', 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['RightArrow', [8594]], ['Rightarrow', [8658]], ['RightArrowLeftArrow', [8644]], ['rightarrowtail', [8611]], ['RightCeiling', [8969]], ['RightDoubleBracket', [10215]], ['RightDownTeeVector', [10589]], ['RightDownVectorBar', [10581]], ['RightDownVector', [8642]], ['RightFloor', [8971]], ['rightharpoondown', [8641]], ['rightharpoonup', [8640]], ['rightleftarrows', [8644]], ['rightleftharpoons', [8652]], ['rightrightarrows', [8649]], ['rightsquigarrow', [8605]], ['RightTeeArrow', [8614]], ['RightTee', [8866]], ['RightTeeVector', [10587]], ['rightthreetimes', [8908]], ['RightTriangleBar', [10704]], ['RightTriangle', [8883]], ['RightTriangleEqual', [8885]], ['RightUpDownVector', [10575]], ['RightUpTeeVector', [10588]], ['RightUpVectorBar', [10580]], ['RightUpVector', [8638]], ['RightVectorBar', [10579]], ['RightVector', [8640]], ['ring', [730]], ['risingdotseq', [8787]], ['rlarr', [8644]], ['rlhar', [8652]], ['rlm', [8207]], ['rmoustache', [9137]], ['rmoust', [9137]], ['rnmid', [10990]], ['roang', [10221]], ['roarr', [8702]], ['robrk', [10215]], ['ropar', [10630]], ['ropf', [120163]], ['Ropf', [8477]], ['roplus', [10798]], ['rotimes', [10805]], ['RoundImplies', [10608]], ['rpar', [41]], ['rpargt', [10644]], ['rppolint', [10770]], ['rrarr', [8649]], ['Rrightarrow', [8667]], ['rsaquo', [8250]], ['rscr', [120007]], ['Rscr', [8475]], ['rsh', [8625]], ['Rsh', [8625]], ['rsqb', [93]], ['rsquo', [8217]], ['rsquor', [8217]], ['CloseCurlyQuote', [8217]], ['rthree', [8908]], ['rtimes', [8906]], ['rtri', [9657]], ['rtrie', [8885]], ['rtrif', [9656]], ['rtriltri', [10702]], ['RuleDelayed', [10740]], ['ruluhar', [10600]], ['rx', [8478]], ['Sacute', [346]], ['sacute', [347]], ['sbquo', [8218]], ['scap', [10936]], ['Scaron', [352]], ['scaron', [353]], ['Sc', [10940]], ['sc', [8827]], ['sccue', [8829]], ['sce', [10928]], ['scE', [10932]], ['Scedil', [350]], ['scedil', [351]], ['Scirc', [348]], ['scirc', [349]], ['scnap', [10938]], ['scnE', [10934]], ['scnsim', [8937]], ['scpolint', [10771]], ['scsim', [8831]], ['Scy', [1057]], ['scy', [1089]], ['sdotb', [8865]], ['sdot', [8901]], ['sdote', [10854]], ['searhk', [10533]], ['searr', [8600]], ['seArr', [8664]], ['searrow', [8600]], ['sect', [167]], ['semi', [59]], ['seswar', [10537]], ['setminus', [8726]], ['setmn', [8726]], ['sext', [10038]], ['Sfr', [120086]], ['sfr', [120112]], ['sfrown', [8994]], ['sharp', [9839]], ['SHCHcy', [1065]], ['shchcy', [1097]], ['SHcy', [1064]], ['shcy', [1096]], ['ShortDownArrow', [8595]], ['ShortLeftArrow', [8592]], ['shortmid', [8739]], ['shortparallel', [8741]], ['ShortRightArrow', [8594]], ['ShortUpArrow', [8593]], ['shy', [173]], ['Sigma', [931]], ['sigma', [963]], ['sigmaf', [962]], ['sigmav', [962]], ['sim', [8764]], ['simdot', [10858]], ['sime', [8771]], ['simeq', [8771]], ['simg', [10910]], ['simgE', [10912]], ['siml', [10909]], ['simlE', [10911]], ['simne', [8774]], ['simplus', [10788]], ['simrarr', [10610]], ['slarr', [8592]], ['SmallCircle', [8728]], ['smallsetminus', [8726]], ['smashp', [10803]], ['smeparsl', [10724]], ['smid', [8739]], ['smile', [8995]], ['smt', [10922]], ['smte', [10924]], ['smtes', [10924, 65024]], ['SOFTcy', [1068]], ['softcy', [1100]], ['solbar', [9023]], ['solb', [10692]], ['sol', [47]], ['Sopf', [120138]], ['sopf', [120164]], ['spades', [9824]], ['spadesuit', [9824]], ['spar', [8741]], ['sqcap', [8851]], ['sqcaps', [8851, 65024]], ['sqcup', [8852]], ['sqcups', [8852, 65024]], ['Sqrt', [8730]], ['sqsub', [8847]], ['sqsube', [8849]], ['sqsubset', [8847]], ['sqsubseteq', [8849]], ['sqsup', [8848]], ['sqsupe', [8850]], ['sqsupset', [8848]], ['sqsupseteq', [8850]], ['square', [9633]], ['Square', [9633]], ['SquareIntersection', [8851]], ['SquareSubset', [8847]], ['SquareSubsetEqual', [8849]], ['SquareSuperset', [8848]], ['SquareSupersetEqual', [8850]], ['SquareUnion', [8852]], ['squarf', [9642]], ['squ', [9633]], ['squf', [9642]], ['srarr', [8594]], ['Sscr', [119982]], ['sscr', [120008]], ['ssetmn', [8726]], ['ssmile', [8995]], ['sstarf', [8902]], ['Star', [8902]], ['star', [9734]], ['starf', [9733]], ['straightepsilon', [1013]], ['straightphi', [981]], ['strns', [175]], ['sub', [8834]], ['Sub', [8912]], ['subdot', [10941]], ['subE', [10949]], ['sube', [8838]], ['subedot', [10947]], ['submult', [10945]], ['subnE', [10955]], ['subne', [8842]], ['subplus', [10943]], ['subrarr', [10617]], ['subset', [8834]], ['Subset', [8912]], ['subseteq', [8838]], ['subseteqq', [10949]], ['SubsetEqual', [8838]], ['subsetneq', [8842]], ['subsetneqq', [10955]], ['subsim', [10951]], ['subsub', [10965]], ['subsup', [10963]], ['succapprox', [10936]], ['succ', [8827]], ['succcurlyeq', [8829]], ['Succeeds', [8827]], ['SucceedsEqual', [10928]], ['SucceedsSlantEqual', [8829]], ['SucceedsTilde', [8831]], ['succeq', [10928]], ['succnapprox', [10938]], ['succneqq', [10934]], ['succnsim', [8937]], ['succsim', [8831]], ['SuchThat', [8715]], ['sum', [8721]], ['Sum', [8721]], ['sung', [9834]], ['sup1', [185]], ['sup2', [178]], ['sup3', [179]], ['sup', [8835]], ['Sup', [8913]], ['supdot', [10942]], ['supdsub', [10968]], ['supE', [10950]], ['supe', [8839]], ['supedot', [10948]], ['Superset', [8835]], ['SupersetEqual', [8839]], ['suphsol', [10185]], ['suphsub', [10967]], ['suplarr', [10619]], ['supmult', [10946]], ['supnE', [10956]], ['supne', [8843]], ['supplus', [10944]], ['supset', [8835]], ['Supset', [8913]], ['supseteq', [8839]], ['supseteqq', [10950]], ['supsetneq', [8843]], ['supsetneqq', [10956]], ['supsim', [10952]], ['supsub', [10964]], ['supsup', [10966]], ['swarhk', [10534]], ['swarr', [8601]], ['swArr', [8665]], ['swarrow', [8601]], ['swnwar', [10538]], ['szlig', [223]], ['Tab', [9]], ['target', [8982]], ['Tau', [932]], ['tau', [964]], ['tbrk', [9140]], ['Tcaron', [356]], ['tcaron', [357]], ['Tcedil', [354]], ['tcedil', [355]], ['Tcy', [1058]], ['tcy', [1090]], ['tdot', [8411]], ['telrec', [8981]], ['Tfr', [120087]], ['tfr', [120113]], ['there4', [8756]], ['therefore', [8756]], ['Therefore', [8756]], ['Theta', [920]], ['theta', [952]], ['thetasym', [977]], ['thetav', [977]], ['thickapprox', [8776]], ['thicksim', [8764]], ['ThickSpace', [8287, 8202]], ['ThinSpace', [8201]], ['thinsp', [8201]], ['thkap', [8776]], ['thksim', [8764]], ['THORN', [222]], ['thorn', [254]], ['tilde', [732]], ['Tilde', [8764]], ['TildeEqual', [8771]], ['TildeFullEqual', [8773]], ['TildeTilde', [8776]], ['timesbar', [10801]], ['timesb', [8864]], ['times', [215]], ['timesd', [10800]], ['tint', [8749]], ['toea', [10536]], ['topbot', [9014]], ['topcir', [10993]], ['top', [8868]], ['Topf', [120139]], ['topf', [120165]], ['topfork', [10970]], ['tosa', [10537]], ['tprime', [8244]], ['trade', [8482]], ['TRADE', [8482]], ['triangle', [9653]], ['triangledown', [9663]], ['triangleleft', [9667]], ['trianglelefteq', [8884]], ['triangleq', [8796]], ['triangleright', [9657]], ['trianglerighteq', [8885]], ['tridot', [9708]], ['trie', [8796]], ['triminus', [10810]], ['TripleDot', [8411]], ['triplus', [10809]], ['trisb', [10701]], ['tritime', [10811]], ['trpezium', [9186]], ['Tscr', [119983]], ['tscr', [120009]], ['TScy', [1062]], ['tscy', [1094]], ['TSHcy', [1035]], ['tshcy', [1115]], ['Tstrok', [358]], ['tstrok', [359]], ['twixt', [8812]], ['twoheadleftarrow', [8606]], ['twoheadrightarrow', [8608]], ['Uacute', [218]], ['uacute', [250]], ['uarr', [8593]], ['Uarr', [8607]], ['uArr', [8657]], ['Uarrocir', [10569]], ['Ubrcy', [1038]], ['ubrcy', [1118]], ['Ubreve', [364]], ['ubreve', [365]], ['Ucirc', [219]], ['ucirc', [251]], ['Ucy', [1059]], ['ucy', [1091]], ['udarr', [8645]], ['Udblac', [368]], ['udblac', [369]], ['udhar', [10606]], ['ufisht', [10622]], ['Ufr', [120088]], ['ufr', [120114]], ['Ugrave', [217]], ['ugrave', [249]], ['uHar', [10595]], ['uharl', [8639]], ['uharr', [8638]], ['uhblk', [9600]], ['ulcorn', [8988]], ['ulcorner', [8988]], ['ulcrop', [8975]], ['ultri', [9720]], ['Umacr', [362]], ['umacr', [363]], ['uml', [168]], ['UnderBar', [95]], ['UnderBrace', [9183]], ['UnderBracket', [9141]], ['UnderParenthesis', [9181]], ['Union', [8899]], ['UnionPlus', [8846]], ['Uogon', [370]], ['uogon', [371]], ['Uopf', [120140]], ['uopf', [120166]], ['UpArrowBar', [10514]], ['uparrow', [8593]], ['UpArrow', [8593]], ['Uparrow', [8657]], ['UpArrowDownArrow', [8645]], ['updownarrow', [8597]], ['UpDownArrow', [8597]], ['Updownarrow', [8661]], ['UpEquilibrium', [10606]], ['upharpoonleft', [8639]], ['upharpoonright', [8638]], ['uplus', [8846]], ['UpperLeftArrow', [8598]], ['UpperRightArrow', [8599]], ['upsi', [965]], ['Upsi', [978]], ['upsih', [978]], ['Upsilon', [933]], ['upsilon', [965]], ['UpTeeArrow', [8613]], ['UpTee', [8869]], ['upuparrows', [8648]], ['urcorn', [8989]], ['urcorner', [8989]], ['urcrop', [8974]], ['Uring', [366]], ['uring', [367]], ['urtri', [9721]], ['Uscr', [119984]], ['uscr', [120010]], ['utdot', [8944]], ['Utilde', [360]], ['utilde', [361]], ['utri', [9653]], ['utrif', [9652]], ['uuarr', [8648]], ['Uuml', [220]], ['uuml', [252]], ['uwangle', [10663]], ['vangrt', [10652]], ['varepsilon', [1013]], ['varkappa', [1008]], ['varnothing', [8709]], ['varphi', [981]], ['varpi', [982]], ['varpropto', [8733]], ['varr', [8597]], ['vArr', [8661]], ['varrho', [1009]], ['varsigma', [962]], ['varsubsetneq', [8842, 65024]], ['varsubsetneqq', [10955, 65024]], ['varsupsetneq', [8843, 65024]], ['varsupsetneqq', [10956, 65024]], ['vartheta', [977]], ['vartriangleleft', [8882]], ['vartriangleright', [8883]], ['vBar', [10984]], ['Vbar', [10987]], ['vBarv', [10985]], ['Vcy', [1042]], ['vcy', [1074]], ['vdash', [8866]], ['vDash', [8872]], ['Vdash', [8873]], ['VDash', [8875]], ['Vdashl', [10982]], ['veebar', [8891]], ['vee', [8744]], ['Vee', [8897]], ['veeeq', [8794]], ['vellip', [8942]], ['verbar', [124]], ['Verbar', [8214]], ['vert', [124]], ['Vert', [8214]], ['VerticalBar', [8739]], ['VerticalLine', [124]], ['VerticalSeparator', [10072]], ['VerticalTilde', [8768]], ['VeryThinSpace', [8202]], ['Vfr', [120089]], ['vfr', [120115]], ['vltri', [8882]], ['vnsub', [8834, 8402]], ['vnsup', [8835, 8402]], ['Vopf', [120141]], ['vopf', [120167]], ['vprop', [8733]], ['vrtri', [8883]], ['Vscr', [119985]], ['vscr', [120011]], ['vsubnE', [10955, 65024]], ['vsubne', [8842, 65024]], ['vsupnE', [10956, 65024]], ['vsupne', [8843, 65024]], ['Vvdash', [8874]], ['vzigzag', [10650]], ['Wcirc', [372]], ['wcirc', [373]], ['wedbar', [10847]], ['wedge', [8743]], ['Wedge', [8896]], ['wedgeq', [8793]], ['weierp', [8472]], ['Wfr', [120090]], ['wfr', [120116]], ['Wopf', [120142]], ['wopf', [120168]], ['wp', [8472]], ['wr', [8768]], ['wreath', [8768]], ['Wscr', [119986]], ['wscr', [120012]], ['xcap', [8898]], ['xcirc', [9711]], ['xcup', [8899]], ['xdtri', [9661]], ['Xfr', [120091]], ['xfr', [120117]], ['xharr', [10231]], ['xhArr', [10234]], ['Xi', [926]], ['xi', [958]], ['xlarr', [10229]], ['xlArr', [10232]], ['xmap', [10236]], ['xnis', [8955]], ['xodot', [10752]], ['Xopf', [120143]], ['xopf', [120169]], ['xoplus', [10753]], ['xotime', [10754]], ['xrarr', [10230]], ['xrArr', [10233]], ['Xscr', [119987]], ['xscr', [120013]], ['xsqcup', [10758]], ['xuplus', [10756]], ['xutri', [9651]], ['xvee', [8897]], ['xwedge', [8896]], ['Yacute', [221]], ['yacute', [253]], ['YAcy', [1071]], ['yacy', [1103]], ['Ycirc', [374]], ['ycirc', [375]], ['Ycy', [1067]], ['ycy', [1099]], ['yen', [165]], ['Yfr', [120092]], ['yfr', [120118]], ['YIcy', [1031]], ['yicy', [1111]], ['Yopf', [120144]], ['yopf', [120170]], ['Yscr', [119988]], ['yscr', [120014]], ['YUcy', [1070]], ['yucy', [1102]], ['yuml', [255]], ['Yuml', [376]], ['Zacute', [377]], ['zacute', [378]], ['Zcaron', [381]], ['zcaron', [382]], ['Zcy', [1047]], ['zcy', [1079]], ['Zdot', [379]], ['zdot', [380]], ['zeetrf', [8488]], ['ZeroWidthSpace', [8203]], ['Zeta', [918]], ['zeta', [950]], ['zfr', [120119]], ['Zfr', [8488]], ['ZHcy', [1046]], ['zhcy', [1078]], ['zigrarr', [8669]], ['zopf', [120171]], ['Zopf', [8484]], ['Zscr', [119989]], ['zscr', [120015]], ['zwj', [8205]], ['zwnj', [8204]]];\nvar DECODE_ONLY_ENTITIES = [['NewLine', [10]]];\nvar alphaIndex = {};\nvar charIndex = {};\ncreateIndexes(alphaIndex, charIndex);\nvar Html5Entities = /** @class */ (function () {\n    function Html5Entities() {\n    }\n    Html5Entities.prototype.decode = function (str) {\n        if (!str || !str.length) {\n            return '';\n        }\n        return str.replace(/&(#?[\\w\\d]+);?/g, function (s, entity) {\n            var chr;\n            if (entity.charAt(0) === \"#\") {\n                var code = entity.charAt(1) === 'x' ?\n                    parseInt(entity.substr(2).toLowerCase(), 16) :\n                    parseInt(entity.substr(1));\n                if (!isNaN(code) || code >= -32768) {\n                    if (code <= 65535) {\n                        chr = String.fromCharCode(code);\n                    }\n                    else {\n                        chr = surrogate_pairs_1.fromCodePoint(code);\n                    }\n                }\n            }\n            else {\n                chr = alphaIndex[entity];\n            }\n            return chr || s;\n        });\n    };\n    Html5Entities.decode = function (str) {\n        return new Html5Entities().decode(str);\n    };\n    Html5Entities.prototype.encode = function (str) {\n        if (!str || !str.length) {\n            return '';\n        }\n        var strLength = str.length;\n        var result = '';\n        var i = 0;\n        while (i < strLength) {\n            var charInfo = charIndex[str.charCodeAt(i)];\n            if (charInfo) {\n                var alpha = charInfo[str.charCodeAt(i + 1)];\n                if (alpha) {\n                    i++;\n                }\n                else {\n                    alpha = charInfo[''];\n                }\n                if (alpha) {\n                    result += \"&\" + alpha + \";\";\n                    i++;\n                    continue;\n                }\n            }\n            result += str.charAt(i);\n            i++;\n        }\n        return result;\n    };\n    Html5Entities.encode = function (str) {\n        return new Html5Entities().encode(str);\n    };\n    Html5Entities.prototype.encodeNonUTF = function (str) {\n        if (!str || !str.length) {\n            return '';\n        }\n        var strLength = str.length;\n        var result = '';\n        var i = 0;\n        while (i < strLength) {\n            var c = str.charCodeAt(i);\n            var charInfo = charIndex[c];\n            if (charInfo) {\n                var alpha = charInfo[str.charCodeAt(i + 1)];\n                if (alpha) {\n                    i++;\n                }\n                else {\n                    alpha = charInfo[''];\n                }\n                if (alpha) {\n                    result += \"&\" + alpha + \";\";\n                    i++;\n                    continue;\n                }\n            }\n            if (c < 32 || c > 126) {\n                if (c >= surrogate_pairs_1.highSurrogateFrom && c <= surrogate_pairs_1.highSurrogateTo) {\n                    result += '&#' + surrogate_pairs_1.getCodePoint(str, i) + ';';\n                    i++;\n                }\n                else {\n                    result += '&#' + c + ';';\n                }\n            }\n            else {\n                result += str.charAt(i);\n            }\n            i++;\n        }\n        return result;\n    };\n    Html5Entities.encodeNonUTF = function (str) {\n        return new Html5Entities().encodeNonUTF(str);\n    };\n    Html5Entities.prototype.encodeNonASCII = function (str) {\n        if (!str || !str.length) {\n            return '';\n        }\n        var strLength = str.length;\n        var result = '';\n        var i = 0;\n        while (i < strLength) {\n            var c = str.charCodeAt(i);\n            if (c <= 255) {\n                result += str[i++];\n                continue;\n            }\n            if (c >= surrogate_pairs_1.highSurrogateFrom && c <= surrogate_pairs_1.highSurrogateTo) {\n                result += '&#' + surrogate_pairs_1.getCodePoint(str, i) + ';';\n                i += 2;\n            }\n            else {\n                result += '&#' + c + ';';\n                i++;\n            }\n        }\n        return result;\n    };\n    Html5Entities.encodeNonASCII = function (str) {\n        return new Html5Entities().encodeNonASCII(str);\n    };\n    return Html5Entities;\n}());\nexports.Html5Entities = Html5Entities;\nfunction createIndexes(alphaIndex, charIndex) {\n    var i = ENTITIES.length;\n    while (i--) {\n        var _a = ENTITIES[i], alpha = _a[0], _b = _a[1], chr = _b[0], chr2 = _b[1];\n        var addChar = (chr < 32 || chr > 126) || chr === 62 || chr === 60 || chr === 38 || chr === 34 || chr === 39;\n        var charInfo = void 0;\n        if (addChar) {\n            charInfo = charIndex[chr] = charIndex[chr] || {};\n        }\n        if (chr2) {\n            alphaIndex[alpha] = String.fromCharCode(chr) + String.fromCharCode(chr2);\n            addChar && (charInfo[chr2] = alpha);\n        }\n        else {\n            alphaIndex[alpha] = String.fromCharCode(chr);\n            addChar && (charInfo[''] = alpha);\n        }\n    }\n    i = DECODE_ONLY_ENTITIES.length;\n    while (i--) {\n        var _c = DECODE_ONLY_ENTITIES[i], alpha = _c[0], _d = _c[1], chr = _d[0], chr2 = _d[1];\n        alphaIndex[alpha] = String.fromCharCode(chr) + (chr2 ? String.fromCharCode(chr2) : '');\n    }\n}\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nvar xml_entities_1 = require(\"./xml-entities\");\nexports.XmlEntities = xml_entities_1.XmlEntities;\nvar html4_entities_1 = require(\"./html4-entities\");\nexports.Html4Entities = html4_entities_1.Html4Entities;\nvar html5_entities_1 = require(\"./html5-entities\");\nexports.Html5Entities = html5_entities_1.Html5Entities;\nexports.AllHtmlEntities = html5_entities_1.Html5Entities;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.fromCodePoint = String.fromCodePoint || function (astralCodePoint) {\n    return String.fromCharCode(Math.floor((astralCodePoint - 0x10000) / 0x400) + 0xD800, (astralCodePoint - 0x10000) % 0x400 + 0xDC00);\n};\nexports.getCodePoint = String.prototype.codePointAt ?\n    function (input, position) {\n        return input.codePointAt(position);\n    } :\n    function (input, position) {\n        return (input.charCodeAt(position) - 0xD800) * 0x400\n            + input.charCodeAt(position + 1) - 0xDC00 + 0x10000;\n    };\nexports.highSurrogateFrom = 0xD800;\nexports.highSurrogateTo = 0xDBFF;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nvar surrogate_pairs_1 = require(\"./surrogate-pairs\");\nvar ALPHA_INDEX = {\n    '&lt': '<',\n    '&gt': '>',\n    '&quot': '\"',\n    '&apos': '\\'',\n    '&amp': '&',\n    '&lt;': '<',\n    '&gt;': '>',\n    '&quot;': '\"',\n    '&apos;': '\\'',\n    '&amp;': '&'\n};\nvar CHAR_INDEX = {\n    60: 'lt',\n    62: 'gt',\n    34: 'quot',\n    39: 'apos',\n    38: 'amp'\n};\nvar CHAR_S_INDEX = {\n    '<': '&lt;',\n    '>': '&gt;',\n    '\"': '&quot;',\n    '\\'': '&apos;',\n    '&': '&amp;'\n};\nvar XmlEntities = /** @class */ (function () {\n    function XmlEntities() {\n    }\n    XmlEntities.prototype.encode = function (str) {\n        if (!str || !str.length) {\n            return '';\n        }\n        return str.replace(/[<>\"'&]/g, function (s) {\n            return CHAR_S_INDEX[s];\n        });\n    };\n    XmlEntities.encode = function (str) {\n        return new XmlEntities().encode(str);\n    };\n    XmlEntities.prototype.decode = function (str) {\n        if (!str || !str.length) {\n            return '';\n        }\n        return str.replace(/&#?[0-9a-zA-Z]+;?/g, function (s) {\n            if (s.charAt(1) === '#') {\n                var code = s.charAt(2).toLowerCase() === 'x' ?\n                    parseInt(s.substr(3), 16) :\n                    parseInt(s.substr(2));\n                if (!isNaN(code) || code >= -32768) {\n                    if (code <= 65535) {\n                        return String.fromCharCode(code);\n                    }\n                    else {\n                        return surrogate_pairs_1.fromCodePoint(code);\n                    }\n                }\n                return '';\n            }\n            return ALPHA_INDEX[s] || s;\n        });\n    };\n    XmlEntities.decode = function (str) {\n        return new XmlEntities().decode(str);\n    };\n    XmlEntities.prototype.encodeNonUTF = function (str) {\n        if (!str || !str.length) {\n            return '';\n        }\n        var strLength = str.length;\n        var result = '';\n        var i = 0;\n        while (i < strLength) {\n            var c = str.charCodeAt(i);\n            var alpha = CHAR_INDEX[c];\n            if (alpha) {\n                result += \"&\" + alpha + \";\";\n                i++;\n                continue;\n            }\n            if (c < 32 || c > 126) {\n                if (c >= surrogate_pairs_1.highSurrogateFrom && c <= surrogate_pairs_1.highSurrogateTo) {\n                    result += '&#' + surrogate_pairs_1.getCodePoint(str, i) + ';';\n                    i++;\n                }\n                else {\n                    result += '&#' + c + ';';\n                }\n            }\n            else {\n                result += str.charAt(i);\n            }\n            i++;\n        }\n        return result;\n    };\n    XmlEntities.encodeNonUTF = function (str) {\n        return new XmlEntities().encodeNonUTF(str);\n    };\n    XmlEntities.prototype.encodeNonASCII = function (str) {\n        if (!str || !str.length) {\n            return '';\n        }\n        var strLength = str.length;\n        var result = '';\n        var i = 0;\n        while (i < strLength) {\n            var c = str.charCodeAt(i);\n            if (c <= 255) {\n                result += str[i++];\n                continue;\n            }\n            if (c >= surrogate_pairs_1.highSurrogateFrom && c <= surrogate_pairs_1.highSurrogateTo) {\n                result += '&#' + surrogate_pairs_1.getCodePoint(str, i) + ';';\n                i++;\n            }\n            else {\n                result += '&#' + c + ';';\n            }\n            i++;\n        }\n        return result;\n    };\n    XmlEntities.encodeNonASCII = function (str) {\n        return new XmlEntities().encodeNonASCII(str);\n    };\n    return XmlEntities;\n}());\nexports.XmlEntities = XmlEntities;\n","/**\n * lodash (Custom Build) <https://lodash.com/>\n * Build: `lodash modularize exports=\"npm\" -o ./`\n * Copyright jQuery Foundation and other contributors <https://jquery.org/>\n * Released under MIT license <https://lodash.com/license>\n * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>\n * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors\n */\n\n/** Used as the `TypeError` message for \"Functions\" methods. */\nvar FUNC_ERROR_TEXT = 'Expected a function';\n\n/** Used as references for various `Number` constants. */\nvar NAN = 0 / 0;\n\n/** `Object#toString` result references. */\nvar symbolTag = '[object Symbol]';\n\n/** Used to match leading and trailing whitespace. */\nvar reTrim = /^\\s+|\\s+$/g;\n\n/** Used to detect bad signed hexadecimal string values. */\nvar reIsBadHex = /^[-+]0x[0-9a-f]+$/i;\n\n/** Used to detect binary string values. */\nvar reIsBinary = /^0b[01]+$/i;\n\n/** Used to detect octal string values. */\nvar reIsOctal = /^0o[0-7]+$/i;\n\n/** Built-in method references without a dependency on `root`. */\nvar freeParseInt = parseInt;\n\n/** Detect free variable `global` from Node.js. */\nvar freeGlobal = typeof global == 'object' && global && global.Object === Object && global;\n\n/** Detect free variable `self`. */\nvar freeSelf = typeof self == 'object' && self && self.Object === Object && self;\n\n/** Used as a reference to the global object. */\nvar root = freeGlobal || freeSelf || Function('return this')();\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeMax = Math.max,\n    nativeMin = Math.min;\n\n/**\n * Gets the timestamp of the number of milliseconds that have elapsed since\n * the Unix epoch (1 January 1970 00:00:00 UTC).\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Date\n * @returns {number} Returns the timestamp.\n * @example\n *\n * _.defer(function(stamp) {\n *   console.log(_.now() - stamp);\n * }, _.now());\n * // => Logs the number of milliseconds it took for the deferred invocation.\n */\nvar now = function() {\n  return root.Date.now();\n};\n\n/**\n * Creates a debounced function that delays invoking `func` until after `wait`\n * milliseconds have elapsed since the last time the debounced function was\n * invoked. The debounced function comes with a `cancel` method to cancel\n * delayed `func` invocations and a `flush` method to immediately invoke them.\n * Provide `options` to indicate whether `func` should be invoked on the\n * leading and/or trailing edge of the `wait` timeout. The `func` is invoked\n * with the last arguments provided to the debounced function. Subsequent\n * calls to the debounced function return the result of the last `func`\n * invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is\n * invoked on the trailing edge of the timeout only if the debounced function\n * is invoked more than once during the `wait` timeout.\n *\n * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.debounce` and `_.throttle`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to debounce.\n * @param {number} [wait=0] The number of milliseconds to delay.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=false]\n *  Specify invoking on the leading edge of the timeout.\n * @param {number} [options.maxWait]\n *  The maximum time `func` is allowed to be delayed before it's invoked.\n * @param {boolean} [options.trailing=true]\n *  Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new debounced function.\n * @example\n *\n * // Avoid costly calculations while the window size is in flux.\n * jQuery(window).on('resize', _.debounce(calculateLayout, 150));\n *\n * // Invoke `sendMail` when clicked, debouncing subsequent calls.\n * jQuery(element).on('click', _.debounce(sendMail, 300, {\n *   'leading': true,\n *   'trailing': false\n * }));\n *\n * // Ensure `batchLog` is invoked once after 1 second of debounced calls.\n * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });\n * var source = new EventSource('/stream');\n * jQuery(source).on('message', debounced);\n *\n * // Cancel the trailing debounced invocation.\n * jQuery(window).on('popstate', debounced.cancel);\n */\nfunction debounce(func, wait, options) {\n  var lastArgs,\n      lastThis,\n      maxWait,\n      result,\n      timerId,\n      lastCallTime,\n      lastInvokeTime = 0,\n      leading = false,\n      maxing = false,\n      trailing = true;\n\n  if (typeof func != 'function') {\n    throw new TypeError(FUNC_ERROR_TEXT);\n  }\n  wait = toNumber(wait) || 0;\n  if (isObject(options)) {\n    leading = !!options.leading;\n    maxing = 'maxWait' in options;\n    maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;\n    trailing = 'trailing' in options ? !!options.trailing : trailing;\n  }\n\n  function invokeFunc(time) {\n    var args = lastArgs,\n        thisArg = lastThis;\n\n    lastArgs = lastThis = undefined;\n    lastInvokeTime = time;\n    result = func.apply(thisArg, args);\n    return result;\n  }\n\n  function leadingEdge(time) {\n    // Reset any `maxWait` timer.\n    lastInvokeTime = time;\n    // Start the timer for the trailing edge.\n    timerId = setTimeout(timerExpired, wait);\n    // Invoke the leading edge.\n    return leading ? invokeFunc(time) : result;\n  }\n\n  function remainingWait(time) {\n    var timeSinceLastCall = time - lastCallTime,\n        timeSinceLastInvoke = time - lastInvokeTime,\n        result = wait - timeSinceLastCall;\n\n    return maxing ? nativeMin(result, maxWait - timeSinceLastInvoke) : result;\n  }\n\n  function shouldInvoke(time) {\n    var timeSinceLastCall = time - lastCallTime,\n        timeSinceLastInvoke = time - lastInvokeTime;\n\n    // Either this is the first call, activity has stopped and we're at the\n    // trailing edge, the system time has gone backwards and we're treating\n    // it as the trailing edge, or we've hit the `maxWait` limit.\n    return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||\n      (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));\n  }\n\n  function timerExpired() {\n    var time = now();\n    if (shouldInvoke(time)) {\n      return trailingEdge(time);\n    }\n    // Restart the timer.\n    timerId = setTimeout(timerExpired, remainingWait(time));\n  }\n\n  function trailingEdge(time) {\n    timerId = undefined;\n\n    // Only invoke if we have `lastArgs` which means `func` has been\n    // debounced at least once.\n    if (trailing && lastArgs) {\n      return invokeFunc(time);\n    }\n    lastArgs = lastThis = undefined;\n    return result;\n  }\n\n  function cancel() {\n    if (timerId !== undefined) {\n      clearTimeout(timerId);\n    }\n    lastInvokeTime = 0;\n    lastArgs = lastCallTime = lastThis = timerId = undefined;\n  }\n\n  function flush() {\n    return timerId === undefined ? result : trailingEdge(now());\n  }\n\n  function debounced() {\n    var time = now(),\n        isInvoking = shouldInvoke(time);\n\n    lastArgs = arguments;\n    lastThis = this;\n    lastCallTime = time;\n\n    if (isInvoking) {\n      if (timerId === undefined) {\n        return leadingEdge(lastCallTime);\n      }\n      if (maxing) {\n        // Handle invocations in a tight loop.\n        timerId = setTimeout(timerExpired, wait);\n        return invokeFunc(lastCallTime);\n      }\n    }\n    if (timerId === undefined) {\n      timerId = setTimeout(timerExpired, wait);\n    }\n    return result;\n  }\n  debounced.cancel = cancel;\n  debounced.flush = flush;\n  return debounced;\n}\n\n/**\n * Checks if `value` is the\n * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)\n * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an object, else `false`.\n * @example\n *\n * _.isObject({});\n * // => true\n *\n * _.isObject([1, 2, 3]);\n * // => true\n *\n * _.isObject(_.noop);\n * // => true\n *\n * _.isObject(null);\n * // => false\n */\nfunction isObject(value) {\n  var type = typeof value;\n  return !!value && (type == 'object' || type == 'function');\n}\n\n/**\n * Checks if `value` is object-like. A value is object-like if it's not `null`\n * and has a `typeof` result of \"object\".\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n * @example\n *\n * _.isObjectLike({});\n * // => true\n *\n * _.isObjectLike([1, 2, 3]);\n * // => true\n *\n * _.isObjectLike(_.noop);\n * // => false\n *\n * _.isObjectLike(null);\n * // => false\n */\nfunction isObjectLike(value) {\n  return !!value && typeof value == 'object';\n}\n\n/**\n * Checks if `value` is classified as a `Symbol` primitive or object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.\n * @example\n *\n * _.isSymbol(Symbol.iterator);\n * // => true\n *\n * _.isSymbol('abc');\n * // => false\n */\nfunction isSymbol(value) {\n  return typeof value == 'symbol' ||\n    (isObjectLike(value) && objectToString.call(value) == symbolTag);\n}\n\n/**\n * Converts `value` to a number.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to process.\n * @returns {number} Returns the number.\n * @example\n *\n * _.toNumber(3.2);\n * // => 3.2\n *\n * _.toNumber(Number.MIN_VALUE);\n * // => 5e-324\n *\n * _.toNumber(Infinity);\n * // => Infinity\n *\n * _.toNumber('3.2');\n * // => 3.2\n */\nfunction toNumber(value) {\n  if (typeof value == 'number') {\n    return value;\n  }\n  if (isSymbol(value)) {\n    return NAN;\n  }\n  if (isObject(value)) {\n    var other = typeof value.valueOf == 'function' ? value.valueOf() : value;\n    value = isObject(other) ? (other + '') : other;\n  }\n  if (typeof value != 'string') {\n    return value === 0 ? value : +value;\n  }\n  value = value.replace(reTrim, '');\n  var isBinary = reIsBinary.test(value);\n  return (isBinary || reIsOctal.test(value))\n    ? freeParseInt(value.slice(2), isBinary ? 2 : 8)\n    : (reIsBadHex.test(value) ? NAN : +value);\n}\n\nmodule.exports = debounce;\n","/*\n* loglevel - https://github.com/pimterry/loglevel\n*\n* Copyright (c) 2013 Tim Perry\n* Licensed under the MIT license.\n*/\n(function (root, definition) {\n    \"use strict\";\n    if (typeof define === 'function' && define.amd) {\n        define(definition);\n    } else if (typeof module === 'object' && module.exports) {\n        module.exports = definition();\n    } else {\n        root.log = definition();\n    }\n}(this, function () {\n    \"use strict\";\n\n    // Slightly dubious tricks to cut down minimized file size\n    var noop = function() {};\n    var undefinedType = \"undefined\";\n    var isIE = (typeof window !== undefinedType) && (typeof window.navigator !== undefinedType) && (\n        /Trident\\/|MSIE /.test(window.navigator.userAgent)\n    );\n\n    var logMethods = [\n        \"trace\",\n        \"debug\",\n        \"info\",\n        \"warn\",\n        \"error\"\n    ];\n\n    // Cross-browser bind equivalent that works at least back to IE6\n    function bindMethod(obj, methodName) {\n        var method = obj[methodName];\n        if (typeof method.bind === 'function') {\n            return method.bind(obj);\n        } else {\n            try {\n                return Function.prototype.bind.call(method, obj);\n            } catch (e) {\n                // Missing bind shim or IE8 + Modernizr, fallback to wrapping\n                return function() {\n                    return Function.prototype.apply.apply(method, [obj, arguments]);\n                };\n            }\n        }\n    }\n\n    // Trace() doesn't print the message in IE, so for that case we need to wrap it\n    function traceForIE() {\n        if (console.log) {\n            if (console.log.apply) {\n                console.log.apply(console, arguments);\n            } else {\n                // In old IE, native console methods themselves don't have apply().\n                Function.prototype.apply.apply(console.log, [console, arguments]);\n            }\n        }\n        if (console.trace) console.trace();\n    }\n\n    // Build the best logging method possible for this env\n    // Wherever possible we want to bind, not wrap, to preserve stack traces\n    function realMethod(methodName) {\n        if (methodName === 'debug') {\n            methodName = 'log';\n        }\n\n        if (typeof console === undefinedType) {\n            return false; // No method possible, for now - fixed later by enableLoggingWhenConsoleArrives\n        } else if (methodName === 'trace' && isIE) {\n            return traceForIE;\n        } else if (console[methodName] !== undefined) {\n            return bindMethod(console, methodName);\n        } else if (console.log !== undefined) {\n            return bindMethod(console, 'log');\n        } else {\n            return noop;\n        }\n    }\n\n    // These private functions always need `this` to be set properly\n\n    function replaceLoggingMethods(level, loggerName) {\n        /*jshint validthis:true */\n        for (var i = 0; i < logMethods.length; i++) {\n            var methodName = logMethods[i];\n            this[methodName] = (i < level) ?\n                noop :\n                this.methodFactory(methodName, level, loggerName);\n        }\n\n        // Define log.log as an alias for log.debug\n        this.log = this.debug;\n    }\n\n    // In old IE versions, the console isn't present until you first open it.\n    // We build realMethod() replacements here that regenerate logging methods\n    function enableLoggingWhenConsoleArrives(methodName, level, loggerName) {\n        return function () {\n            if (typeof console !== undefinedType) {\n                replaceLoggingMethods.call(this, level, loggerName);\n                this[methodName].apply(this, arguments);\n            }\n        };\n    }\n\n    // By default, we use closely bound real methods wherever possible, and\n    // otherwise we wait for a console to appear, and then try again.\n    function defaultMethodFactory(methodName, level, loggerName) {\n        /*jshint validthis:true */\n        return realMethod(methodName) ||\n               enableLoggingWhenConsoleArrives.apply(this, arguments);\n    }\n\n    function Logger(name, defaultLevel, factory) {\n      var self = this;\n      var currentLevel;\n\n      var storageKey = \"loglevel\";\n      if (typeof name === \"string\") {\n        storageKey += \":\" + name;\n      } else if (typeof name === \"symbol\") {\n        storageKey = undefined;\n      }\n\n      function persistLevelIfPossible(levelNum) {\n          var levelName = (logMethods[levelNum] || 'silent').toUpperCase();\n\n          if (typeof window === undefinedType || !storageKey) return;\n\n          // Use localStorage if available\n          try {\n              window.localStorage[storageKey] = levelName;\n              return;\n          } catch (ignore) {}\n\n          // Use session cookie as fallback\n          try {\n              window.document.cookie =\n                encodeURIComponent(storageKey) + \"=\" + levelName + \";\";\n          } catch (ignore) {}\n      }\n\n      function getPersistedLevel() {\n          var storedLevel;\n\n          if (typeof window === undefinedType || !storageKey) return;\n\n          try {\n              storedLevel = window.localStorage[storageKey];\n          } catch (ignore) {}\n\n          // Fallback to cookies if local storage gives us nothing\n          if (typeof storedLevel === undefinedType) {\n              try {\n                  var cookie = window.document.cookie;\n                  var location = cookie.indexOf(\n                      encodeURIComponent(storageKey) + \"=\");\n                  if (location !== -1) {\n                      storedLevel = /^([^;]+)/.exec(cookie.slice(location))[1];\n                  }\n              } catch (ignore) {}\n          }\n\n          // If the stored level is not valid, treat it as if nothing was stored.\n          if (self.levels[storedLevel] === undefined) {\n              storedLevel = undefined;\n          }\n\n          return storedLevel;\n      }\n\n      /*\n       *\n       * Public logger API - see https://github.com/pimterry/loglevel for details\n       *\n       */\n\n      self.name = name;\n\n      self.levels = { \"TRACE\": 0, \"DEBUG\": 1, \"INFO\": 2, \"WARN\": 3,\n          \"ERROR\": 4, \"SILENT\": 5};\n\n      self.methodFactory = factory || defaultMethodFactory;\n\n      self.getLevel = function () {\n          return currentLevel;\n      };\n\n      self.setLevel = function (level, persist) {\n          if (typeof level === \"string\" && self.levels[level.toUpperCase()] !== undefined) {\n              level = self.levels[level.toUpperCase()];\n          }\n          if (typeof level === \"number\" && level >= 0 && level <= self.levels.SILENT) {\n              currentLevel = level;\n              if (persist !== false) {  // defaults to true\n                  persistLevelIfPossible(level);\n              }\n              replaceLoggingMethods.call(self, level, name);\n              if (typeof console === undefinedType && level < self.levels.SILENT) {\n                  return \"No console available for logging\";\n              }\n          } else {\n              throw \"log.setLevel() called with invalid level: \" + level;\n          }\n      };\n\n      self.setDefaultLevel = function (level) {\n          if (!getPersistedLevel()) {\n              self.setLevel(level, false);\n          }\n      };\n\n      self.enableAll = function(persist) {\n          self.setLevel(self.levels.TRACE, persist);\n      };\n\n      self.disableAll = function(persist) {\n          self.setLevel(self.levels.SILENT, persist);\n      };\n\n      // Initialize with the right level\n      var initialLevel = getPersistedLevel();\n      if (initialLevel == null) {\n          initialLevel = defaultLevel == null ? \"WARN\" : defaultLevel;\n      }\n      self.setLevel(initialLevel, false);\n    }\n\n    /*\n     *\n     * Top-level API\n     *\n     */\n\n    var defaultLogger = new Logger();\n\n    var _loggersByName = {};\n    defaultLogger.getLogger = function getLogger(name) {\n        if ((typeof name !== \"symbol\" && typeof name !== \"string\") || name === \"\") {\n          throw new TypeError(\"You must supply a name when creating a logger.\");\n        }\n\n        var logger = _loggersByName[name];\n        if (!logger) {\n          logger = _loggersByName[name] = new Logger(\n            name, defaultLogger.getLevel(), defaultLogger.methodFactory);\n        }\n        return logger;\n    };\n\n    // Grab the current global log variable in case of overwrite\n    var _log = (typeof window !== undefinedType) ? window.log : undefined;\n    defaultLogger.noConflict = function() {\n        if (typeof window !== undefinedType &&\n               window.log === defaultLogger) {\n            window.log = _log;\n        }\n\n        return defaultLogger;\n    };\n\n    defaultLogger.getLoggers = function getLoggers() {\n        return _loggersByName;\n    };\n\n    // ES6 default export, for compatibility\n    defaultLogger['default'] = defaultLogger;\n\n    return defaultLogger;\n}));\n","'use strict';\n\n/** Highest positive signed 32-bit float value */\nconst maxInt = 2147483647; // aka. 0x7FFFFFFF or 2^31-1\n\n/** Bootstring parameters */\nconst base = 36;\nconst tMin = 1;\nconst tMax = 26;\nconst skew = 38;\nconst damp = 700;\nconst initialBias = 72;\nconst initialN = 128; // 0x80\nconst delimiter = '-'; // '\\x2D'\n\n/** Regular expressions */\nconst regexPunycode = /^xn--/;\nconst regexNonASCII = /[^\\0-\\x7E]/; // non-ASCII chars\nconst regexSeparators = /[\\x2E\\u3002\\uFF0E\\uFF61]/g; // RFC 3490 separators\n\n/** Error messages */\nconst errors = {\n\t'overflow': 'Overflow: input needs wider integers to process',\n\t'not-basic': 'Illegal input >= 0x80 (not a basic code point)',\n\t'invalid-input': 'Invalid input'\n};\n\n/** Convenience shortcuts */\nconst baseMinusTMin = base - tMin;\nconst floor = Math.floor;\nconst stringFromCharCode = String.fromCharCode;\n\n/*--------------------------------------------------------------------------*/\n\n/**\n * A generic error utility function.\n * @private\n * @param {String} type The error type.\n * @returns {Error} Throws a `RangeError` with the applicable error message.\n */\nfunction error(type) {\n\tthrow new RangeError(errors[type]);\n}\n\n/**\n * A generic `Array#map` utility function.\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} callback The function that gets called for every array\n * item.\n * @returns {Array} A new array of values returned by the callback function.\n */\nfunction map(array, fn) {\n\tconst result = [];\n\tlet length = array.length;\n\twhile (length--) {\n\t\tresult[length] = fn(array[length]);\n\t}\n\treturn result;\n}\n\n/**\n * A simple `Array#map`-like wrapper to work with domain name strings or email\n * addresses.\n * @private\n * @param {String} domain The domain name or email address.\n * @param {Function} callback The function that gets called for every\n * character.\n * @returns {Array} A new string of characters returned by the callback\n * function.\n */\nfunction mapDomain(string, fn) {\n\tconst parts = string.split('@');\n\tlet result = '';\n\tif (parts.length > 1) {\n\t\t// In email addresses, only the domain name should be punycoded. Leave\n\t\t// the local part (i.e. everything up to `@`) intact.\n\t\tresult = parts[0] + '@';\n\t\tstring = parts[1];\n\t}\n\t// Avoid `split(regex)` for IE8 compatibility. See #17.\n\tstring = string.replace(regexSeparators, '\\x2E');\n\tconst labels = string.split('.');\n\tconst encoded = map(labels, fn).join('.');\n\treturn result + encoded;\n}\n\n/**\n * Creates an array containing the numeric code points of each Unicode\n * character in the string. While JavaScript uses UCS-2 internally,\n * this function will convert a pair of surrogate halves (each of which\n * UCS-2 exposes as separate characters) into a single code point,\n * matching UTF-16.\n * @see `punycode.ucs2.encode`\n * @see <https://mathiasbynens.be/notes/javascript-encoding>\n * @memberOf punycode.ucs2\n * @name decode\n * @param {String} string The Unicode input string (UCS-2).\n * @returns {Array} The new array of code points.\n */\nfunction ucs2decode(string) {\n\tconst output = [];\n\tlet counter = 0;\n\tconst length = string.length;\n\twhile (counter < length) {\n\t\tconst value = string.charCodeAt(counter++);\n\t\tif (value >= 0xD800 && value <= 0xDBFF && counter < length) {\n\t\t\t// It's a high surrogate, and there is a next character.\n\t\t\tconst extra = string.charCodeAt(counter++);\n\t\t\tif ((extra & 0xFC00) == 0xDC00) { // Low surrogate.\n\t\t\t\toutput.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);\n\t\t\t} else {\n\t\t\t\t// It's an unmatched surrogate; only append this code unit, in case the\n\t\t\t\t// next code unit is the high surrogate of a surrogate pair.\n\t\t\t\toutput.push(value);\n\t\t\t\tcounter--;\n\t\t\t}\n\t\t} else {\n\t\t\toutput.push(value);\n\t\t}\n\t}\n\treturn output;\n}\n\n/**\n * Creates a string based on an array of numeric code points.\n * @see `punycode.ucs2.decode`\n * @memberOf punycode.ucs2\n * @name encode\n * @param {Array} codePoints The array of numeric code points.\n * @returns {String} The new Unicode string (UCS-2).\n */\nconst ucs2encode = array => String.fromCodePoint(...array);\n\n/**\n * Converts a basic code point into a digit/integer.\n * @see `digitToBasic()`\n * @private\n * @param {Number} codePoint The basic numeric code point value.\n * @returns {Number} The numeric value of a basic code point (for use in\n * representing integers) in the range `0` to `base - 1`, or `base` if\n * the code point does not represent a value.\n */\nconst basicToDigit = function(codePoint) {\n\tif (codePoint - 0x30 < 0x0A) {\n\t\treturn codePoint - 0x16;\n\t}\n\tif (codePoint - 0x41 < 0x1A) {\n\t\treturn codePoint - 0x41;\n\t}\n\tif (codePoint - 0x61 < 0x1A) {\n\t\treturn codePoint - 0x61;\n\t}\n\treturn base;\n};\n\n/**\n * Converts a digit/integer into a basic code point.\n * @see `basicToDigit()`\n * @private\n * @param {Number} digit The numeric value of a basic code point.\n * @returns {Number} The basic code point whose value (when used for\n * representing integers) is `digit`, which needs to be in the range\n * `0` to `base - 1`. If `flag` is non-zero, the uppercase form is\n * used; else, the lowercase form is used. The behavior is undefined\n * if `flag` is non-zero and `digit` has no uppercase form.\n */\nconst digitToBasic = function(digit, flag) {\n\t//  0..25 map to ASCII a..z or A..Z\n\t// 26..35 map to ASCII 0..9\n\treturn digit + 22 + 75 * (digit < 26) - ((flag != 0) << 5);\n};\n\n/**\n * Bias adaptation function as per section 3.4 of RFC 3492.\n * https://tools.ietf.org/html/rfc3492#section-3.4\n * @private\n */\nconst adapt = function(delta, numPoints, firstTime) {\n\tlet k = 0;\n\tdelta = firstTime ? floor(delta / damp) : delta >> 1;\n\tdelta += floor(delta / numPoints);\n\tfor (/* no initialization */; delta > baseMinusTMin * tMax >> 1; k += base) {\n\t\tdelta = floor(delta / baseMinusTMin);\n\t}\n\treturn floor(k + (baseMinusTMin + 1) * delta / (delta + skew));\n};\n\n/**\n * Converts a Punycode string of ASCII-only symbols to a string of Unicode\n * symbols.\n * @memberOf punycode\n * @param {String} input The Punycode string of ASCII-only symbols.\n * @returns {String} The resulting string of Unicode symbols.\n */\nconst decode = function(input) {\n\t// Don't use UCS-2.\n\tconst output = [];\n\tconst inputLength = input.length;\n\tlet i = 0;\n\tlet n = initialN;\n\tlet bias = initialBias;\n\n\t// Handle the basic code points: let `basic` be the number of input code\n\t// points before the last delimiter, or `0` if there is none, then copy\n\t// the first basic code points to the output.\n\n\tlet basic = input.lastIndexOf(delimiter);\n\tif (basic < 0) {\n\t\tbasic = 0;\n\t}\n\n\tfor (let j = 0; j < basic; ++j) {\n\t\t// if it's not a basic code point\n\t\tif (input.charCodeAt(j) >= 0x80) {\n\t\t\terror('not-basic');\n\t\t}\n\t\toutput.push(input.charCodeAt(j));\n\t}\n\n\t// Main decoding loop: start just after the last delimiter if any basic code\n\t// points were copied; start at the beginning otherwise.\n\n\tfor (let index = basic > 0 ? basic + 1 : 0; index < inputLength; /* no final expression */) {\n\n\t\t// `index` is the index of the next character to be consumed.\n\t\t// Decode a generalized variable-length integer into `delta`,\n\t\t// which gets added to `i`. The overflow checking is easier\n\t\t// if we increase `i` as we go, then subtract off its starting\n\t\t// value at the end to obtain `delta`.\n\t\tlet oldi = i;\n\t\tfor (let w = 1, k = base; /* no condition */; k += base) {\n\n\t\t\tif (index >= inputLength) {\n\t\t\t\terror('invalid-input');\n\t\t\t}\n\n\t\t\tconst digit = basicToDigit(input.charCodeAt(index++));\n\n\t\t\tif (digit >= base || digit > floor((maxInt - i) / w)) {\n\t\t\t\terror('overflow');\n\t\t\t}\n\n\t\t\ti += digit * w;\n\t\t\tconst t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);\n\n\t\t\tif (digit < t) {\n\t\t\t\tbreak;\n\t\t\t}\n\n\t\t\tconst baseMinusT = base - t;\n\t\t\tif (w > floor(maxInt / baseMinusT)) {\n\t\t\t\terror('overflow');\n\t\t\t}\n\n\t\t\tw *= baseMinusT;\n\n\t\t}\n\n\t\tconst out = output.length + 1;\n\t\tbias = adapt(i - oldi, out, oldi == 0);\n\n\t\t// `i` was supposed to wrap around from `out` to `0`,\n\t\t// incrementing `n` each time, so we'll fix that now:\n\t\tif (floor(i / out) > maxInt - n) {\n\t\t\terror('overflow');\n\t\t}\n\n\t\tn += floor(i / out);\n\t\ti %= out;\n\n\t\t// Insert `n` at position `i` of the output.\n\t\toutput.splice(i++, 0, n);\n\n\t}\n\n\treturn String.fromCodePoint(...output);\n};\n\n/**\n * Converts a string of Unicode symbols (e.g. a domain name label) to a\n * Punycode string of ASCII-only symbols.\n * @memberOf punycode\n * @param {String} input The string of Unicode symbols.\n * @returns {String} The resulting Punycode string of ASCII-only symbols.\n */\nconst encode = function(input) {\n\tconst output = [];\n\n\t// Convert the input in UCS-2 to an array of Unicode code points.\n\tinput = ucs2decode(input);\n\n\t// Cache the length.\n\tlet inputLength = input.length;\n\n\t// Initialize the state.\n\tlet n = initialN;\n\tlet delta = 0;\n\tlet bias = initialBias;\n\n\t// Handle the basic code points.\n\tfor (const currentValue of input) {\n\t\tif (currentValue < 0x80) {\n\t\t\toutput.push(stringFromCharCode(currentValue));\n\t\t}\n\t}\n\n\tlet basicLength = output.length;\n\tlet handledCPCount = basicLength;\n\n\t// `handledCPCount` is the number of code points that have been handled;\n\t// `basicLength` is the number of basic code points.\n\n\t// Finish the basic string with a delimiter unless it's empty.\n\tif (basicLength) {\n\t\toutput.push(delimiter);\n\t}\n\n\t// Main encoding loop:\n\twhile (handledCPCount < inputLength) {\n\n\t\t// All non-basic code points < n have been handled already. Find the next\n\t\t// larger one:\n\t\tlet m = maxInt;\n\t\tfor (const currentValue of input) {\n\t\t\tif (currentValue >= n && currentValue < m) {\n\t\t\t\tm = currentValue;\n\t\t\t}\n\t\t}\n\n\t\t// Increase `delta` enough to advance the decoder's <n,i> state to <m,0>,\n\t\t// but guard against overflow.\n\t\tconst handledCPCountPlusOne = handledCPCount + 1;\n\t\tif (m - n > floor((maxInt - delta) / handledCPCountPlusOne)) {\n\t\t\terror('overflow');\n\t\t}\n\n\t\tdelta += (m - n) * handledCPCountPlusOne;\n\t\tn = m;\n\n\t\tfor (const currentValue of input) {\n\t\t\tif (currentValue < n && ++delta > maxInt) {\n\t\t\t\terror('overflow');\n\t\t\t}\n\t\t\tif (currentValue == n) {\n\t\t\t\t// Represent delta as a generalized variable-length integer.\n\t\t\t\tlet q = delta;\n\t\t\t\tfor (let k = base; /* no condition */; k += base) {\n\t\t\t\t\tconst t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);\n\t\t\t\t\tif (q < t) {\n\t\t\t\t\t\tbreak;\n\t\t\t\t\t}\n\t\t\t\t\tconst qMinusT = q - t;\n\t\t\t\t\tconst baseMinusT = base - t;\n\t\t\t\t\toutput.push(\n\t\t\t\t\t\tstringFromCharCode(digitToBasic(t + qMinusT % baseMinusT, 0))\n\t\t\t\t\t);\n\t\t\t\t\tq = floor(qMinusT / baseMinusT);\n\t\t\t\t}\n\n\t\t\t\toutput.push(stringFromCharCode(digitToBasic(q, 0)));\n\t\t\t\tbias = adapt(delta, handledCPCountPlusOne, handledCPCount == basicLength);\n\t\t\t\tdelta = 0;\n\t\t\t\t++handledCPCount;\n\t\t\t}\n\t\t}\n\n\t\t++delta;\n\t\t++n;\n\n\t}\n\treturn output.join('');\n};\n\n/**\n * Converts a Punycode string representing a domain name or an email address\n * to Unicode. Only the Punycoded parts of the input will be converted, i.e.\n * it doesn't matter if you call it on a string that has already been\n * converted to Unicode.\n * @memberOf punycode\n * @param {String} input The Punycoded domain name or email address to\n * convert to Unicode.\n * @returns {String} The Unicode representation of the given Punycode\n * string.\n */\nconst toUnicode = function(input) {\n\treturn mapDomain(input, function(string) {\n\t\treturn regexPunycode.test(string)\n\t\t\t? decode(string.slice(4).toLowerCase())\n\t\t\t: string;\n\t});\n};\n\n/**\n * Converts a Unicode string representing a domain name or an email address to\n * Punycode. Only the non-ASCII parts of the domain name will be converted,\n * i.e. it doesn't matter if you call it with a domain that's already in\n * ASCII.\n * @memberOf punycode\n * @param {String} input The domain name or email address to convert, as a\n * Unicode string.\n * @returns {String} The Punycode representation of the given domain name or\n * email address.\n */\nconst toASCII = function(input) {\n\treturn mapDomain(input, function(string) {\n\t\treturn regexNonASCII.test(string)\n\t\t\t? 'xn--' + encode(string)\n\t\t\t: string;\n\t});\n};\n\n/*--------------------------------------------------------------------------*/\n\n/** Define the public API */\nconst punycode = {\n\t/**\n\t * A string representing the current Punycode.js version number.\n\t * @memberOf punycode\n\t * @type String\n\t */\n\t'version': '2.1.0',\n\t/**\n\t * An object of methods to convert from JavaScript's internal character\n\t * representation (UCS-2) to Unicode code points, and back.\n\t * @see <https://mathiasbynens.be/notes/javascript-encoding>\n\t * @memberOf punycode\n\t * @type Object\n\t */\n\t'ucs2': {\n\t\t'decode': ucs2decode,\n\t\t'encode': ucs2encode\n\t},\n\t'decode': decode,\n\t'encode': encode,\n\t'toASCII': toASCII,\n\t'toUnicode': toUnicode\n};\n\nexport { ucs2decode, ucs2encode, decode, encode, toASCII, toUnicode };\nexport default punycode;\n","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n'use strict';\n\n// If obj.hasOwnProperty has been overridden, then calling\n// obj.hasOwnProperty(prop) will break.\n// See: https://github.com/joyent/node/issues/1707\nfunction hasOwnProperty(obj, prop) {\n  return Object.prototype.hasOwnProperty.call(obj, prop);\n}\n\nmodule.exports = function(qs, sep, eq, options) {\n  sep = sep || '&';\n  eq = eq || '=';\n  var obj = {};\n\n  if (typeof qs !== 'string' || qs.length === 0) {\n    return obj;\n  }\n\n  var regexp = /\\+/g;\n  qs = qs.split(sep);\n\n  var maxKeys = 1000;\n  if (options && typeof options.maxKeys === 'number') {\n    maxKeys = options.maxKeys;\n  }\n\n  var len = qs.length;\n  // maxKeys <= 0 means that we should not limit keys count\n  if (maxKeys > 0 && len > maxKeys) {\n    len = maxKeys;\n  }\n\n  for (var i = 0; i < len; ++i) {\n    var x = qs[i].replace(regexp, '%20'),\n        idx = x.indexOf(eq),\n        kstr, vstr, k, v;\n\n    if (idx >= 0) {\n      kstr = x.substr(0, idx);\n      vstr = x.substr(idx + 1);\n    } else {\n      kstr = x;\n      vstr = '';\n    }\n\n    k = decodeURIComponent(kstr);\n    v = decodeURIComponent(vstr);\n\n    if (!hasOwnProperty(obj, k)) {\n      obj[k] = v;\n    } else if (Array.isArray(obj[k])) {\n      obj[k].push(v);\n    } else {\n      obj[k] = [obj[k], v];\n    }\n  }\n\n  return obj;\n};\n","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n'use strict';\n\nvar stringifyPrimitive = function(v) {\n  switch (typeof v) {\n    case 'string':\n      return v;\n\n    case 'boolean':\n      return v ? 'true' : 'false';\n\n    case 'number':\n      return isFinite(v) ? v : '';\n\n    default:\n      return '';\n  }\n};\n\nmodule.exports = function(obj, sep, eq, name) {\n  sep = sep || '&';\n  eq = eq || '=';\n  if (obj === null) {\n    obj = undefined;\n  }\n\n  if (typeof obj === 'object') {\n    return Object.keys(obj).map(function(k) {\n      var ks = encodeURIComponent(stringifyPrimitive(k)) + eq;\n      if (Array.isArray(obj[k])) {\n        return obj[k].map(function(v) {\n          return ks + encodeURIComponent(stringifyPrimitive(v));\n        }).join(sep);\n      } else {\n        return ks + encodeURIComponent(stringifyPrimitive(obj[k]));\n      }\n    }).join(sep);\n\n  }\n\n  if (!name) return '';\n  return encodeURIComponent(stringifyPrimitive(name)) + eq +\n         encodeURIComponent(stringifyPrimitive(obj));\n};\n","'use strict';\n\nexports.decode = exports.parse = require('./decode');\nexports.encode = exports.stringify = require('./encode');\n","/* sockjs-client v1.5.0 | http://sockjs.org | MIT license */\n(function(f){if(typeof exports===\"object\"&&typeof module!==\"undefined\"){module.exports=f()}else if(typeof define===\"function\"&&define.amd){define([],f)}else{var g;if(typeof window!==\"undefined\"){g=window}else if(typeof global!==\"undefined\"){g=global}else if(typeof self!==\"undefined\"){g=self}else{g=this}g.SockJS = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c=\"function\"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error(\"Cannot find module '\"+i+\"'\");throw a.code=\"MODULE_NOT_FOUND\",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u=\"function\"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){\n(function (global){\n'use strict';\n\nvar transportList = require('./transport-list');\n\nmodule.exports = require('./main')(transportList);\n\n// TODO can't get rid of this until all servers do\nif ('_sockjs_onload' in global) {\n  setTimeout(global._sockjs_onload, 1);\n}\n\n}).call(this,typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n\n},{\"./main\":14,\"./transport-list\":16}],2:[function(require,module,exports){\n'use strict';\n\nvar inherits = require('inherits')\n  , Event = require('./event')\n  ;\n\nfunction CloseEvent() {\n  Event.call(this);\n  this.initEvent('close', false, false);\n  this.wasClean = false;\n  this.code = 0;\n  this.reason = '';\n}\n\ninherits(CloseEvent, Event);\n\nmodule.exports = CloseEvent;\n\n},{\"./event\":4,\"inherits\":57}],3:[function(require,module,exports){\n'use strict';\n\nvar inherits = require('inherits')\n  , EventTarget = require('./eventtarget')\n  ;\n\nfunction EventEmitter() {\n  EventTarget.call(this);\n}\n\ninherits(EventEmitter, EventTarget);\n\nEventEmitter.prototype.removeAllListeners = function(type) {\n  if (type) {\n    delete this._listeners[type];\n  } else {\n    this._listeners = {};\n  }\n};\n\nEventEmitter.prototype.once = function(type, listener) {\n  var self = this\n    , fired = false;\n\n  function g() {\n    self.removeListener(type, g);\n\n    if (!fired) {\n      fired = true;\n      listener.apply(this, arguments);\n    }\n  }\n\n  this.on(type, g);\n};\n\nEventEmitter.prototype.emit = function() {\n  var type = arguments[0];\n  var listeners = this._listeners[type];\n  if (!listeners) {\n    return;\n  }\n  // equivalent of Array.prototype.slice.call(arguments, 1);\n  var l = arguments.length;\n  var args = new Array(l - 1);\n  for (var ai = 1; ai < l; ai++) {\n    args[ai - 1] = arguments[ai];\n  }\n  for (var i = 0; i < listeners.length; i++) {\n    listeners[i].apply(this, args);\n  }\n};\n\nEventEmitter.prototype.on = EventEmitter.prototype.addListener = EventTarget.prototype.addEventListener;\nEventEmitter.prototype.removeListener = EventTarget.prototype.removeEventListener;\n\nmodule.exports.EventEmitter = EventEmitter;\n\n},{\"./eventtarget\":5,\"inherits\":57}],4:[function(require,module,exports){\n'use strict';\n\nfunction Event(eventType) {\n  this.type = eventType;\n}\n\nEvent.prototype.initEvent = function(eventType, canBubble, cancelable) {\n  this.type = eventType;\n  this.bubbles = canBubble;\n  this.cancelable = cancelable;\n  this.timeStamp = +new Date();\n  return this;\n};\n\nEvent.prototype.stopPropagation = function() {};\nEvent.prototype.preventDefault = function() {};\n\nEvent.CAPTURING_PHASE = 1;\nEvent.AT_TARGET = 2;\nEvent.BUBBLING_PHASE = 3;\n\nmodule.exports = Event;\n\n},{}],5:[function(require,module,exports){\n'use strict';\n\n/* Simplified implementation of DOM2 EventTarget.\n *   http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-EventTarget\n */\n\nfunction EventTarget() {\n  this._listeners = {};\n}\n\nEventTarget.prototype.addEventListener = function(eventType, listener) {\n  if (!(eventType in this._listeners)) {\n    this._listeners[eventType] = [];\n  }\n  var arr = this._listeners[eventType];\n  // #4\n  if (arr.indexOf(listener) === -1) {\n    // Make a copy so as not to interfere with a current dispatchEvent.\n    arr = arr.concat([listener]);\n  }\n  this._listeners[eventType] = arr;\n};\n\nEventTarget.prototype.removeEventListener = function(eventType, listener) {\n  var arr = this._listeners[eventType];\n  if (!arr) {\n    return;\n  }\n  var idx = arr.indexOf(listener);\n  if (idx !== -1) {\n    if (arr.length > 1) {\n      // Make a copy so as not to interfere with a current dispatchEvent.\n      this._listeners[eventType] = arr.slice(0, idx).concat(arr.slice(idx + 1));\n    } else {\n      delete this._listeners[eventType];\n    }\n    return;\n  }\n};\n\nEventTarget.prototype.dispatchEvent = function() {\n  var event = arguments[0];\n  var t = event.type;\n  // equivalent of Array.prototype.slice.call(arguments, 0);\n  var args = arguments.length === 1 ? [event] : Array.apply(null, arguments);\n  // TODO: This doesn't match the real behavior; per spec, onfoo get\n  // their place in line from the /first/ time they're set from\n  // non-null. Although WebKit bumps it to the end every time it's\n  // set.\n  if (this['on' + t]) {\n    this['on' + t].apply(this, args);\n  }\n  if (t in this._listeners) {\n    // Grab a reference to the listeners list. removeEventListener may alter the list.\n    var listeners = this._listeners[t];\n    for (var i = 0; i < listeners.length; i++) {\n      listeners[i].apply(this, args);\n    }\n  }\n};\n\nmodule.exports = EventTarget;\n\n},{}],6:[function(require,module,exports){\n'use strict';\n\nvar inherits = require('inherits')\n  , Event = require('./event')\n  ;\n\nfunction TransportMessageEvent(data) {\n  Event.call(this);\n  this.initEvent('message', false, false);\n  this.data = data;\n}\n\ninherits(TransportMessageEvent, Event);\n\nmodule.exports = TransportMessageEvent;\n\n},{\"./event\":4,\"inherits\":57}],7:[function(require,module,exports){\n'use strict';\n\nvar JSON3 = require('json3')\n  , iframeUtils = require('./utils/iframe')\n  ;\n\nfunction FacadeJS(transport) {\n  this._transport = transport;\n  transport.on('message', this._transportMessage.bind(this));\n  transport.on('close', this._transportClose.bind(this));\n}\n\nFacadeJS.prototype._transportClose = function(code, reason) {\n  iframeUtils.postMessage('c', JSON3.stringify([code, reason]));\n};\nFacadeJS.prototype._transportMessage = function(frame) {\n  iframeUtils.postMessage('t', frame);\n};\nFacadeJS.prototype._send = function(data) {\n  this._transport.send(data);\n};\nFacadeJS.prototype._close = function() {\n  this._transport.close();\n  this._transport.removeAllListeners();\n};\n\nmodule.exports = FacadeJS;\n\n},{\"./utils/iframe\":47,\"json3\":58}],8:[function(require,module,exports){\n(function (process){\n'use strict';\n\nvar urlUtils = require('./utils/url')\n  , eventUtils = require('./utils/event')\n  , JSON3 = require('json3')\n  , FacadeJS = require('./facade')\n  , InfoIframeReceiver = require('./info-iframe-receiver')\n  , iframeUtils = require('./utils/iframe')\n  , loc = require('./location')\n  ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n  debug = require('debug')('sockjs-client:iframe-bootstrap');\n}\n\nmodule.exports = function(SockJS, availableTransports) {\n  var transportMap = {};\n  availableTransports.forEach(function(at) {\n    if (at.facadeTransport) {\n      transportMap[at.facadeTransport.transportName] = at.facadeTransport;\n    }\n  });\n\n  // hard-coded for the info iframe\n  // TODO see if we can make this more dynamic\n  transportMap[InfoIframeReceiver.transportName] = InfoIframeReceiver;\n  var parentOrigin;\n\n  /* eslint-disable camelcase */\n  SockJS.bootstrap_iframe = function() {\n    /* eslint-enable camelcase */\n    var facade;\n    iframeUtils.currentWindowId = loc.hash.slice(1);\n    var onMessage = function(e) {\n      if (e.source !== parent) {\n        return;\n      }\n      if (typeof parentOrigin === 'undefined') {\n        parentOrigin = e.origin;\n      }\n      if (e.origin !== parentOrigin) {\n        return;\n      }\n\n      var iframeMessage;\n      try {\n        iframeMessage = JSON3.parse(e.data);\n      } catch (ignored) {\n        debug('bad json', e.data);\n        return;\n      }\n\n      if (iframeMessage.windowId !== iframeUtils.currentWindowId) {\n        return;\n      }\n      switch (iframeMessage.type) {\n      case 's':\n        var p;\n        try {\n          p = JSON3.parse(iframeMessage.data);\n        } catch (ignored) {\n          debug('bad json', iframeMessage.data);\n          break;\n        }\n        var version = p[0];\n        var transport = p[1];\n        var transUrl = p[2];\n        var baseUrl = p[3];\n        debug(version, transport, transUrl, baseUrl);\n        // change this to semver logic\n        if (version !== SockJS.version) {\n          throw new Error('Incompatible SockJS! Main site uses:' +\n                    ' \"' + version + '\", the iframe:' +\n                    ' \"' + SockJS.version + '\".');\n        }\n\n        if (!urlUtils.isOriginEqual(transUrl, loc.href) ||\n            !urlUtils.isOriginEqual(baseUrl, loc.href)) {\n          throw new Error('Can\\'t connect to different domain from within an ' +\n                    'iframe. (' + loc.href + ', ' + transUrl + ', ' + baseUrl + ')');\n        }\n        facade = new FacadeJS(new transportMap[transport](transUrl, baseUrl));\n        break;\n      case 'm':\n        facade._send(iframeMessage.data);\n        break;\n      case 'c':\n        if (facade) {\n          facade._close();\n        }\n        facade = null;\n        break;\n      }\n    };\n\n    eventUtils.attachEvent('message', onMessage);\n\n    // Start\n    iframeUtils.postMessage('s');\n  };\n};\n\n}).call(this,{ env: {} })\n\n},{\"./facade\":7,\"./info-iframe-receiver\":10,\"./location\":13,\"./utils/event\":46,\"./utils/iframe\":47,\"./utils/url\":52,\"debug\":55,\"json3\":58}],9:[function(require,module,exports){\n(function (process){\n'use strict';\n\nvar EventEmitter = require('events').EventEmitter\n  , inherits = require('inherits')\n  , JSON3 = require('json3')\n  , objectUtils = require('./utils/object')\n  ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n  debug = require('debug')('sockjs-client:info-ajax');\n}\n\nfunction InfoAjax(url, AjaxObject) {\n  EventEmitter.call(this);\n\n  var self = this;\n  var t0 = +new Date();\n  this.xo = new AjaxObject('GET', url);\n\n  this.xo.once('finish', function(status, text) {\n    var info, rtt;\n    if (status === 200) {\n      rtt = (+new Date()) - t0;\n      if (text) {\n        try {\n          info = JSON3.parse(text);\n        } catch (e) {\n          debug('bad json', text);\n        }\n      }\n\n      if (!objectUtils.isObject(info)) {\n        info = {};\n      }\n    }\n    self.emit('finish', info, rtt);\n    self.removeAllListeners();\n  });\n}\n\ninherits(InfoAjax, EventEmitter);\n\nInfoAjax.prototype.close = function() {\n  this.removeAllListeners();\n  this.xo.close();\n};\n\nmodule.exports = InfoAjax;\n\n}).call(this,{ env: {} })\n\n},{\"./utils/object\":49,\"debug\":55,\"events\":3,\"inherits\":57,\"json3\":58}],10:[function(require,module,exports){\n'use strict';\n\nvar inherits = require('inherits')\n  , EventEmitter = require('events').EventEmitter\n  , JSON3 = require('json3')\n  , XHRLocalObject = require('./transport/sender/xhr-local')\n  , InfoAjax = require('./info-ajax')\n  ;\n\nfunction InfoReceiverIframe(transUrl) {\n  var self = this;\n  EventEmitter.call(this);\n\n  this.ir = new InfoAjax(transUrl, XHRLocalObject);\n  this.ir.once('finish', function(info, rtt) {\n    self.ir = null;\n    self.emit('message', JSON3.stringify([info, rtt]));\n  });\n}\n\ninherits(InfoReceiverIframe, EventEmitter);\n\nInfoReceiverIframe.transportName = 'iframe-info-receiver';\n\nInfoReceiverIframe.prototype.close = function() {\n  if (this.ir) {\n    this.ir.close();\n    this.ir = null;\n  }\n  this.removeAllListeners();\n};\n\nmodule.exports = InfoReceiverIframe;\n\n},{\"./info-ajax\":9,\"./transport/sender/xhr-local\":37,\"events\":3,\"inherits\":57,\"json3\":58}],11:[function(require,module,exports){\n(function (process,global){\n'use strict';\n\nvar EventEmitter = require('events').EventEmitter\n  , inherits = require('inherits')\n  , JSON3 = require('json3')\n  , utils = require('./utils/event')\n  , IframeTransport = require('./transport/iframe')\n  , InfoReceiverIframe = require('./info-iframe-receiver')\n  ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n  debug = require('debug')('sockjs-client:info-iframe');\n}\n\nfunction InfoIframe(baseUrl, url) {\n  var self = this;\n  EventEmitter.call(this);\n\n  var go = function() {\n    var ifr = self.ifr = new IframeTransport(InfoReceiverIframe.transportName, url, baseUrl);\n\n    ifr.once('message', function(msg) {\n      if (msg) {\n        var d;\n        try {\n          d = JSON3.parse(msg);\n        } catch (e) {\n          debug('bad json', msg);\n          self.emit('finish');\n          self.close();\n          return;\n        }\n\n        var info = d[0], rtt = d[1];\n        self.emit('finish', info, rtt);\n      }\n      self.close();\n    });\n\n    ifr.once('close', function() {\n      self.emit('finish');\n      self.close();\n    });\n  };\n\n  // TODO this seems the same as the 'needBody' from transports\n  if (!global.document.body) {\n    utils.attachEvent('load', go);\n  } else {\n    go();\n  }\n}\n\ninherits(InfoIframe, EventEmitter);\n\nInfoIframe.enabled = function() {\n  return IframeTransport.enabled();\n};\n\nInfoIframe.prototype.close = function() {\n  if (this.ifr) {\n    this.ifr.close();\n  }\n  this.removeAllListeners();\n  this.ifr = null;\n};\n\nmodule.exports = InfoIframe;\n\n}).call(this,{ env: {} },typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n\n},{\"./info-iframe-receiver\":10,\"./transport/iframe\":22,\"./utils/event\":46,\"debug\":55,\"events\":3,\"inherits\":57,\"json3\":58}],12:[function(require,module,exports){\n(function (process){\n'use strict';\n\nvar EventEmitter = require('events').EventEmitter\n  , inherits = require('inherits')\n  , urlUtils = require('./utils/url')\n  , XDR = require('./transport/sender/xdr')\n  , XHRCors = require('./transport/sender/xhr-cors')\n  , XHRLocal = require('./transport/sender/xhr-local')\n  , XHRFake = require('./transport/sender/xhr-fake')\n  , InfoIframe = require('./info-iframe')\n  , InfoAjax = require('./info-ajax')\n  ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n  debug = require('debug')('sockjs-client:info-receiver');\n}\n\nfunction InfoReceiver(baseUrl, urlInfo) {\n  debug(baseUrl);\n  var self = this;\n  EventEmitter.call(this);\n\n  setTimeout(function() {\n    self.doXhr(baseUrl, urlInfo);\n  }, 0);\n}\n\ninherits(InfoReceiver, EventEmitter);\n\n// TODO this is currently ignoring the list of available transports and the whitelist\n\nInfoReceiver._getReceiver = function(baseUrl, url, urlInfo) {\n  // determine method of CORS support (if needed)\n  if (urlInfo.sameOrigin) {\n    return new InfoAjax(url, XHRLocal);\n  }\n  if (XHRCors.enabled) {\n    return new InfoAjax(url, XHRCors);\n  }\n  if (XDR.enabled && urlInfo.sameScheme) {\n    return new InfoAjax(url, XDR);\n  }\n  if (InfoIframe.enabled()) {\n    return new InfoIframe(baseUrl, url);\n  }\n  return new InfoAjax(url, XHRFake);\n};\n\nInfoReceiver.prototype.doXhr = function(baseUrl, urlInfo) {\n  var self = this\n    , url = urlUtils.addPath(baseUrl, '/info')\n    ;\n  debug('doXhr', url);\n\n  this.xo = InfoReceiver._getReceiver(baseUrl, url, urlInfo);\n\n  this.timeoutRef = setTimeout(function() {\n    debug('timeout');\n    self._cleanup(false);\n    self.emit('finish');\n  }, InfoReceiver.timeout);\n\n  this.xo.once('finish', function(info, rtt) {\n    debug('finish', info, rtt);\n    self._cleanup(true);\n    self.emit('finish', info, rtt);\n  });\n};\n\nInfoReceiver.prototype._cleanup = function(wasClean) {\n  debug('_cleanup');\n  clearTimeout(this.timeoutRef);\n  this.timeoutRef = null;\n  if (!wasClean && this.xo) {\n    this.xo.close();\n  }\n  this.xo = null;\n};\n\nInfoReceiver.prototype.close = function() {\n  debug('close');\n  this.removeAllListeners();\n  this._cleanup(false);\n};\n\nInfoReceiver.timeout = 8000;\n\nmodule.exports = InfoReceiver;\n\n}).call(this,{ env: {} })\n\n},{\"./info-ajax\":9,\"./info-iframe\":11,\"./transport/sender/xdr\":34,\"./transport/sender/xhr-cors\":35,\"./transport/sender/xhr-fake\":36,\"./transport/sender/xhr-local\":37,\"./utils/url\":52,\"debug\":55,\"events\":3,\"inherits\":57}],13:[function(require,module,exports){\n(function (global){\n'use strict';\n\nmodule.exports = global.location || {\n  origin: 'http://localhost:80'\n, protocol: 'http:'\n, host: 'localhost'\n, port: 80\n, href: 'http://localhost/'\n, hash: ''\n};\n\n}).call(this,typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n\n},{}],14:[function(require,module,exports){\n(function (process,global){\n'use strict';\n\nrequire('./shims');\n\nvar URL = require('url-parse')\n  , inherits = require('inherits')\n  , JSON3 = require('json3')\n  , random = require('./utils/random')\n  , escape = require('./utils/escape')\n  , urlUtils = require('./utils/url')\n  , eventUtils = require('./utils/event')\n  , transport = require('./utils/transport')\n  , objectUtils = require('./utils/object')\n  , browser = require('./utils/browser')\n  , log = require('./utils/log')\n  , Event = require('./event/event')\n  , EventTarget = require('./event/eventtarget')\n  , loc = require('./location')\n  , CloseEvent = require('./event/close')\n  , TransportMessageEvent = require('./event/trans-message')\n  , InfoReceiver = require('./info-receiver')\n  ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n  debug = require('debug')('sockjs-client:main');\n}\n\nvar transports;\n\n// follow constructor steps defined at http://dev.w3.org/html5/websockets/#the-websocket-interface\nfunction SockJS(url, protocols, options) {\n  if (!(this instanceof SockJS)) {\n    return new SockJS(url, protocols, options);\n  }\n  if (arguments.length < 1) {\n    throw new TypeError(\"Failed to construct 'SockJS: 1 argument required, but only 0 present\");\n  }\n  EventTarget.call(this);\n\n  this.readyState = SockJS.CONNECTING;\n  this.extensions = '';\n  this.protocol = '';\n\n  // non-standard extension\n  options = options || {};\n  if (options.protocols_whitelist) {\n    log.warn(\"'protocols_whitelist' is DEPRECATED. Use 'transports' instead.\");\n  }\n  this._transportsWhitelist = options.transports;\n  this._transportOptions = options.transportOptions || {};\n  this._timeout = options.timeout || 0;\n\n  var sessionId = options.sessionId || 8;\n  if (typeof sessionId === 'function') {\n    this._generateSessionId = sessionId;\n  } else if (typeof sessionId === 'number') {\n    this._generateSessionId = function() {\n      return random.string(sessionId);\n    };\n  } else {\n    throw new TypeError('If sessionId is used in the options, it needs to be a number or a function.');\n  }\n\n  this._server = options.server || random.numberString(1000);\n\n  // Step 1 of WS spec - parse and validate the url. Issue #8\n  var parsedUrl = new URL(url);\n  if (!parsedUrl.host || !parsedUrl.protocol) {\n    throw new SyntaxError(\"The URL '\" + url + \"' is invalid\");\n  } else if (parsedUrl.hash) {\n    throw new SyntaxError('The URL must not contain a fragment');\n  } else if (parsedUrl.protocol !== 'http:' && parsedUrl.protocol !== 'https:') {\n    throw new SyntaxError(\"The URL's scheme must be either 'http:' or 'https:'. '\" + parsedUrl.protocol + \"' is not allowed.\");\n  }\n\n  var secure = parsedUrl.protocol === 'https:';\n  // Step 2 - don't allow secure origin with an insecure protocol\n  if (loc.protocol === 'https:' && !secure) {\n    // exception is 127.0.0.0/8 and ::1 urls\n    if (!urlUtils.isLoopbackAddr(parsedUrl.hostname)) {\n      throw new Error('SecurityError: An insecure SockJS connection may not be initiated from a page loaded over HTTPS');\n    }\n  }\n\n  // Step 3 - check port access - no need here\n  // Step 4 - parse protocols argument\n  if (!protocols) {\n    protocols = [];\n  } else if (!Array.isArray(protocols)) {\n    protocols = [protocols];\n  }\n\n  // Step 5 - check protocols argument\n  var sortedProtocols = protocols.sort();\n  sortedProtocols.forEach(function(proto, i) {\n    if (!proto) {\n      throw new SyntaxError(\"The protocols entry '\" + proto + \"' is invalid.\");\n    }\n    if (i < (sortedProtocols.length - 1) && proto === sortedProtocols[i + 1]) {\n      throw new SyntaxError(\"The protocols entry '\" + proto + \"' is duplicated.\");\n    }\n  });\n\n  // Step 6 - convert origin\n  var o = urlUtils.getOrigin(loc.href);\n  this._origin = o ? o.toLowerCase() : null;\n\n  // remove the trailing slash\n  parsedUrl.set('pathname', parsedUrl.pathname.replace(/\\/+$/, ''));\n\n  // store the sanitized url\n  this.url = parsedUrl.href;\n  debug('using url', this.url);\n\n  // Step 7 - start connection in background\n  // obtain server info\n  // http://sockjs.github.io/sockjs-protocol/sockjs-protocol-0.3.3.html#section-26\n  this._urlInfo = {\n    nullOrigin: !browser.hasDomain()\n  , sameOrigin: urlUtils.isOriginEqual(this.url, loc.href)\n  , sameScheme: urlUtils.isSchemeEqual(this.url, loc.href)\n  };\n\n  this._ir = new InfoReceiver(this.url, this._urlInfo);\n  this._ir.once('finish', this._receiveInfo.bind(this));\n}\n\ninherits(SockJS, EventTarget);\n\nfunction userSetCode(code) {\n  return code === 1000 || (code >= 3000 && code <= 4999);\n}\n\nSockJS.prototype.close = function(code, reason) {\n  // Step 1\n  if (code && !userSetCode(code)) {\n    throw new Error('InvalidAccessError: Invalid code');\n  }\n  // Step 2.4 states the max is 123 bytes, but we are just checking length\n  if (reason && reason.length > 123) {\n    throw new SyntaxError('reason argument has an invalid length');\n  }\n\n  // Step 3.1\n  if (this.readyState === SockJS.CLOSING || this.readyState === SockJS.CLOSED) {\n    return;\n  }\n\n  // TODO look at docs to determine how to set this\n  var wasClean = true;\n  this._close(code || 1000, reason || 'Normal closure', wasClean);\n};\n\nSockJS.prototype.send = function(data) {\n  // #13 - convert anything non-string to string\n  // TODO this currently turns objects into [object Object]\n  if (typeof data !== 'string') {\n    data = '' + data;\n  }\n  if (this.readyState === SockJS.CONNECTING) {\n    throw new Error('InvalidStateError: The connection has not been established yet');\n  }\n  if (this.readyState !== SockJS.OPEN) {\n    return;\n  }\n  this._transport.send(escape.quote(data));\n};\n\nSockJS.version = require('./version');\n\nSockJS.CONNECTING = 0;\nSockJS.OPEN = 1;\nSockJS.CLOSING = 2;\nSockJS.CLOSED = 3;\n\nSockJS.prototype._receiveInfo = function(info, rtt) {\n  debug('_receiveInfo', rtt);\n  this._ir = null;\n  if (!info) {\n    this._close(1002, 'Cannot connect to server');\n    return;\n  }\n\n  // establish a round-trip timeout (RTO) based on the\n  // round-trip time (RTT)\n  this._rto = this.countRTO(rtt);\n  // allow server to override url used for the actual transport\n  this._transUrl = info.base_url ? info.base_url : this.url;\n  info = objectUtils.extend(info, this._urlInfo);\n  debug('info', info);\n  // determine list of desired and supported transports\n  var enabledTransports = transports.filterToEnabled(this._transportsWhitelist, info);\n  this._transports = enabledTransports.main;\n  debug(this._transports.length + ' enabled transports');\n\n  this._connect();\n};\n\nSockJS.prototype._connect = function() {\n  for (var Transport = this._transports.shift(); Transport; Transport = this._transports.shift()) {\n    debug('attempt', Transport.transportName);\n    if (Transport.needBody) {\n      if (!global.document.body ||\n          (typeof global.document.readyState !== 'undefined' &&\n            global.document.readyState !== 'complete' &&\n            global.document.readyState !== 'interactive')) {\n        debug('waiting for body');\n        this._transports.unshift(Transport);\n        eventUtils.attachEvent('load', this._connect.bind(this));\n        return;\n      }\n    }\n\n    // calculate timeout based on RTO and round trips. Default to 5s\n    var timeoutMs = Math.max(this._timeout, (this._rto * Transport.roundTrips) || 5000);\n    this._transportTimeoutId = setTimeout(this._transportTimeout.bind(this), timeoutMs);\n    debug('using timeout', timeoutMs);\n\n    var transportUrl = urlUtils.addPath(this._transUrl, '/' + this._server + '/' + this._generateSessionId());\n    var options = this._transportOptions[Transport.transportName];\n    debug('transport url', transportUrl);\n    var transportObj = new Transport(transportUrl, this._transUrl, options);\n    transportObj.on('message', this._transportMessage.bind(this));\n    transportObj.once('close', this._transportClose.bind(this));\n    transportObj.transportName = Transport.transportName;\n    this._transport = transportObj;\n\n    return;\n  }\n  this._close(2000, 'All transports failed', false);\n};\n\nSockJS.prototype._transportTimeout = function() {\n  debug('_transportTimeout');\n  if (this.readyState === SockJS.CONNECTING) {\n    if (this._transport) {\n      this._transport.close();\n    }\n\n    this._transportClose(2007, 'Transport timed out');\n  }\n};\n\nSockJS.prototype._transportMessage = function(msg) {\n  debug('_transportMessage', msg);\n  var self = this\n    , type = msg.slice(0, 1)\n    , content = msg.slice(1)\n    , payload\n    ;\n\n  // first check for messages that don't need a payload\n  switch (type) {\n    case 'o':\n      this._open();\n      return;\n    case 'h':\n      this.dispatchEvent(new Event('heartbeat'));\n      debug('heartbeat', this.transport);\n      return;\n  }\n\n  if (content) {\n    try {\n      payload = JSON3.parse(content);\n    } catch (e) {\n      debug('bad json', content);\n    }\n  }\n\n  if (typeof payload === 'undefined') {\n    debug('empty payload', content);\n    return;\n  }\n\n  switch (type) {\n    case 'a':\n      if (Array.isArray(payload)) {\n        payload.forEach(function(p) {\n          debug('message', self.transport, p);\n          self.dispatchEvent(new TransportMessageEvent(p));\n        });\n      }\n      break;\n    case 'm':\n      debug('message', this.transport, payload);\n      this.dispatchEvent(new TransportMessageEvent(payload));\n      break;\n    case 'c':\n      if (Array.isArray(payload) && payload.length === 2) {\n        this._close(payload[0], payload[1], true);\n      }\n      break;\n  }\n};\n\nSockJS.prototype._transportClose = function(code, reason) {\n  debug('_transportClose', this.transport, code, reason);\n  if (this._transport) {\n    this._transport.removeAllListeners();\n    this._transport = null;\n    this.transport = null;\n  }\n\n  if (!userSetCode(code) && code !== 2000 && this.readyState === SockJS.CONNECTING) {\n    this._connect();\n    return;\n  }\n\n  this._close(code, reason);\n};\n\nSockJS.prototype._open = function() {\n  debug('_open', this._transport && this._transport.transportName, this.readyState);\n  if (this.readyState === SockJS.CONNECTING) {\n    if (this._transportTimeoutId) {\n      clearTimeout(this._transportTimeoutId);\n      this._transportTimeoutId = null;\n    }\n    this.readyState = SockJS.OPEN;\n    this.transport = this._transport.transportName;\n    this.dispatchEvent(new Event('open'));\n    debug('connected', this.transport);\n  } else {\n    // The server might have been restarted, and lost track of our\n    // connection.\n    this._close(1006, 'Server lost session');\n  }\n};\n\nSockJS.prototype._close = function(code, reason, wasClean) {\n  debug('_close', this.transport, code, reason, wasClean, this.readyState);\n  var forceFail = false;\n\n  if (this._ir) {\n    forceFail = true;\n    this._ir.close();\n    this._ir = null;\n  }\n  if (this._transport) {\n    this._transport.close();\n    this._transport = null;\n    this.transport = null;\n  }\n\n  if (this.readyState === SockJS.CLOSED) {\n    throw new Error('InvalidStateError: SockJS has already been closed');\n  }\n\n  this.readyState = SockJS.CLOSING;\n  setTimeout(function() {\n    this.readyState = SockJS.CLOSED;\n\n    if (forceFail) {\n      this.dispatchEvent(new Event('error'));\n    }\n\n    var e = new CloseEvent('close');\n    e.wasClean = wasClean || false;\n    e.code = code || 1000;\n    e.reason = reason;\n\n    this.dispatchEvent(e);\n    this.onmessage = this.onclose = this.onerror = null;\n    debug('disconnected');\n  }.bind(this), 0);\n};\n\n// See: http://www.erg.abdn.ac.uk/~gerrit/dccp/notes/ccid2/rto_estimator/\n// and RFC 2988.\nSockJS.prototype.countRTO = function(rtt) {\n  // In a local environment, when using IE8/9 and the `jsonp-polling`\n  // transport the time needed to establish a connection (the time that pass\n  // from the opening of the transport to the call of `_dispatchOpen`) is\n  // around 200msec (the lower bound used in the article above) and this\n  // causes spurious timeouts. For this reason we calculate a value slightly\n  // larger than that used in the article.\n  if (rtt > 100) {\n    return 4 * rtt; // rto > 400msec\n  }\n  return 300 + rtt; // 300msec < rto <= 400msec\n};\n\nmodule.exports = function(availableTransports) {\n  transports = transport(availableTransports);\n  require('./iframe-bootstrap')(SockJS, availableTransports);\n  return SockJS;\n};\n\n}).call(this,{ env: {} },typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n\n},{\"./event/close\":2,\"./event/event\":4,\"./event/eventtarget\":5,\"./event/trans-message\":6,\"./iframe-bootstrap\":8,\"./info-receiver\":12,\"./location\":13,\"./shims\":15,\"./utils/browser\":44,\"./utils/escape\":45,\"./utils/event\":46,\"./utils/log\":48,\"./utils/object\":49,\"./utils/random\":50,\"./utils/transport\":51,\"./utils/url\":52,\"./version\":53,\"debug\":55,\"inherits\":57,\"json3\":58,\"url-parse\":61}],15:[function(require,module,exports){\n/* eslint-disable */\n/* jscs: disable */\n'use strict';\n\n// pulled specific shims from https://github.com/es-shims/es5-shim\n\nvar ArrayPrototype = Array.prototype;\nvar ObjectPrototype = Object.prototype;\nvar FunctionPrototype = Function.prototype;\nvar StringPrototype = String.prototype;\nvar array_slice = ArrayPrototype.slice;\n\nvar _toString = ObjectPrototype.toString;\nvar isFunction = function (val) {\n    return ObjectPrototype.toString.call(val) === '[object Function]';\n};\nvar isArray = function isArray(obj) {\n    return _toString.call(obj) === '[object Array]';\n};\nvar isString = function isString(obj) {\n    return _toString.call(obj) === '[object String]';\n};\n\nvar supportsDescriptors = Object.defineProperty && (function () {\n    try {\n        Object.defineProperty({}, 'x', {});\n        return true;\n    } catch (e) { /* this is ES3 */\n        return false;\n    }\n}());\n\n// Define configurable, writable and non-enumerable props\n// if they don't exist.\nvar defineProperty;\nif (supportsDescriptors) {\n    defineProperty = function (object, name, method, forceAssign) {\n        if (!forceAssign && (name in object)) { return; }\n        Object.defineProperty(object, name, {\n            configurable: true,\n            enumerable: false,\n            writable: true,\n            value: method\n        });\n    };\n} else {\n    defineProperty = function (object, name, method, forceAssign) {\n        if (!forceAssign && (name in object)) { return; }\n        object[name] = method;\n    };\n}\nvar defineProperties = function (object, map, forceAssign) {\n    for (var name in map) {\n        if (ObjectPrototype.hasOwnProperty.call(map, name)) {\n          defineProperty(object, name, map[name], forceAssign);\n        }\n    }\n};\n\nvar toObject = function (o) {\n    if (o == null) { // this matches both null and undefined\n        throw new TypeError(\"can't convert \" + o + ' to object');\n    }\n    return Object(o);\n};\n\n//\n// Util\n// ======\n//\n\n// ES5 9.4\n// http://es5.github.com/#x9.4\n// http://jsperf.com/to-integer\n\nfunction toInteger(num) {\n    var n = +num;\n    if (n !== n) { // isNaN\n        n = 0;\n    } else if (n !== 0 && n !== (1 / 0) && n !== -(1 / 0)) {\n        n = (n > 0 || -1) * Math.floor(Math.abs(n));\n    }\n    return n;\n}\n\nfunction ToUint32(x) {\n    return x >>> 0;\n}\n\n//\n// Function\n// ========\n//\n\n// ES-5 15.3.4.5\n// http://es5.github.com/#x15.3.4.5\n\nfunction Empty() {}\n\ndefineProperties(FunctionPrototype, {\n    bind: function bind(that) { // .length is 1\n        // 1. Let Target be the this value.\n        var target = this;\n        // 2. If IsCallable(Target) is false, throw a TypeError exception.\n        if (!isFunction(target)) {\n            throw new TypeError('Function.prototype.bind called on incompatible ' + target);\n        }\n        // 3. Let A be a new (possibly empty) internal list of all of the\n        //   argument values provided after thisArg (arg1, arg2 etc), in order.\n        // XXX slicedArgs will stand in for \"A\" if used\n        var args = array_slice.call(arguments, 1); // for normal call\n        // 4. Let F be a new native ECMAScript object.\n        // 11. Set the [[Prototype]] internal property of F to the standard\n        //   built-in Function prototype object as specified in 15.3.3.1.\n        // 12. Set the [[Call]] internal property of F as described in\n        //   15.3.4.5.1.\n        // 13. Set the [[Construct]] internal property of F as described in\n        //   15.3.4.5.2.\n        // 14. Set the [[HasInstance]] internal property of F as described in\n        //   15.3.4.5.3.\n        var binder = function () {\n\n            if (this instanceof bound) {\n                // 15.3.4.5.2 [[Construct]]\n                // When the [[Construct]] internal method of a function object,\n                // F that was created using the bind function is called with a\n                // list of arguments ExtraArgs, the following steps are taken:\n                // 1. Let target be the value of F's [[TargetFunction]]\n                //   internal property.\n                // 2. If target has no [[Construct]] internal method, a\n                //   TypeError exception is thrown.\n                // 3. Let boundArgs be the value of F's [[BoundArgs]] internal\n                //   property.\n                // 4. Let args be a new list containing the same values as the\n                //   list boundArgs in the same order followed by the same\n                //   values as the list ExtraArgs in the same order.\n                // 5. Return the result of calling the [[Construct]] internal\n                //   method of target providing args as the arguments.\n\n                var result = target.apply(\n                    this,\n                    args.concat(array_slice.call(arguments))\n                );\n                if (Object(result) === result) {\n                    return result;\n                }\n                return this;\n\n            } else {\n                // 15.3.4.5.1 [[Call]]\n                // When the [[Call]] internal method of a function object, F,\n                // which was created using the bind function is called with a\n                // this value and a list of arguments ExtraArgs, the following\n                // steps are taken:\n                // 1. Let boundArgs be the value of F's [[BoundArgs]] internal\n                //   property.\n                // 2. Let boundThis be the value of F's [[BoundThis]] internal\n                //   property.\n                // 3. Let target be the value of F's [[TargetFunction]] internal\n                //   property.\n                // 4. Let args be a new list containing the same values as the\n                //   list boundArgs in the same order followed by the same\n                //   values as the list ExtraArgs in the same order.\n                // 5. Return the result of calling the [[Call]] internal method\n                //   of target providing boundThis as the this value and\n                //   providing args as the arguments.\n\n                // equiv: target.call(this, ...boundArgs, ...args)\n                return target.apply(\n                    that,\n                    args.concat(array_slice.call(arguments))\n                );\n\n            }\n\n        };\n\n        // 15. If the [[Class]] internal property of Target is \"Function\", then\n        //     a. Let L be the length property of Target minus the length of A.\n        //     b. Set the length own property of F to either 0 or L, whichever is\n        //       larger.\n        // 16. Else set the length own property of F to 0.\n\n        var boundLength = Math.max(0, target.length - args.length);\n\n        // 17. Set the attributes of the length own property of F to the values\n        //   specified in 15.3.5.1.\n        var boundArgs = [];\n        for (var i = 0; i < boundLength; i++) {\n            boundArgs.push('$' + i);\n        }\n\n        // XXX Build a dynamic function with desired amount of arguments is the only\n        // way to set the length property of a function.\n        // In environments where Content Security Policies enabled (Chrome extensions,\n        // for ex.) all use of eval or Function costructor throws an exception.\n        // However in all of these environments Function.prototype.bind exists\n        // and so this code will never be executed.\n        var bound = Function('binder', 'return function (' + boundArgs.join(',') + '){ return binder.apply(this, arguments); }')(binder);\n\n        if (target.prototype) {\n            Empty.prototype = target.prototype;\n            bound.prototype = new Empty();\n            // Clean up dangling references.\n            Empty.prototype = null;\n        }\n\n        // TODO\n        // 18. Set the [[Extensible]] internal property of F to true.\n\n        // TODO\n        // 19. Let thrower be the [[ThrowTypeError]] function Object (13.2.3).\n        // 20. Call the [[DefineOwnProperty]] internal method of F with\n        //   arguments \"caller\", PropertyDescriptor {[[Get]]: thrower, [[Set]]:\n        //   thrower, [[Enumerable]]: false, [[Configurable]]: false}, and\n        //   false.\n        // 21. Call the [[DefineOwnProperty]] internal method of F with\n        //   arguments \"arguments\", PropertyDescriptor {[[Get]]: thrower,\n        //   [[Set]]: thrower, [[Enumerable]]: false, [[Configurable]]: false},\n        //   and false.\n\n        // TODO\n        // NOTE Function objects created using Function.prototype.bind do not\n        // have a prototype property or the [[Code]], [[FormalParameters]], and\n        // [[Scope]] internal properties.\n        // XXX can't delete prototype in pure-js.\n\n        // 22. Return F.\n        return bound;\n    }\n});\n\n//\n// Array\n// =====\n//\n\n// ES5 15.4.3.2\n// http://es5.github.com/#x15.4.3.2\n// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/isArray\ndefineProperties(Array, { isArray: isArray });\n\n\nvar boxedString = Object('a');\nvar splitString = boxedString[0] !== 'a' || !(0 in boxedString);\n\nvar properlyBoxesContext = function properlyBoxed(method) {\n    // Check node 0.6.21 bug where third parameter is not boxed\n    var properlyBoxesNonStrict = true;\n    var properlyBoxesStrict = true;\n    if (method) {\n        method.call('foo', function (_, __, context) {\n            if (typeof context !== 'object') { properlyBoxesNonStrict = false; }\n        });\n\n        method.call([1], function () {\n            'use strict';\n            properlyBoxesStrict = typeof this === 'string';\n        }, 'x');\n    }\n    return !!method && properlyBoxesNonStrict && properlyBoxesStrict;\n};\n\ndefineProperties(ArrayPrototype, {\n    forEach: function forEach(fun /*, thisp*/) {\n        var object = toObject(this),\n            self = splitString && isString(this) ? this.split('') : object,\n            thisp = arguments[1],\n            i = -1,\n            length = self.length >>> 0;\n\n        // If no callback function or if callback is not a callable function\n        if (!isFunction(fun)) {\n            throw new TypeError(); // TODO message\n        }\n\n        while (++i < length) {\n            if (i in self) {\n                // Invoke the callback function with call, passing arguments:\n                // context, property value, property key, thisArg object\n                // context\n                fun.call(thisp, self[i], i, object);\n            }\n        }\n    }\n}, !properlyBoxesContext(ArrayPrototype.forEach));\n\n// ES5 15.4.4.14\n// http://es5.github.com/#x15.4.4.14\n// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/indexOf\nvar hasFirefox2IndexOfBug = Array.prototype.indexOf && [0, 1].indexOf(1, 2) !== -1;\ndefineProperties(ArrayPrototype, {\n    indexOf: function indexOf(sought /*, fromIndex */ ) {\n        var self = splitString && isString(this) ? this.split('') : toObject(this),\n            length = self.length >>> 0;\n\n        if (!length) {\n            return -1;\n        }\n\n        var i = 0;\n        if (arguments.length > 1) {\n            i = toInteger(arguments[1]);\n        }\n\n        // handle negative indices\n        i = i >= 0 ? i : Math.max(0, length + i);\n        for (; i < length; i++) {\n            if (i in self && self[i] === sought) {\n                return i;\n            }\n        }\n        return -1;\n    }\n}, hasFirefox2IndexOfBug);\n\n//\n// String\n// ======\n//\n\n// ES5 15.5.4.14\n// http://es5.github.com/#x15.5.4.14\n\n// [bugfix, IE lt 9, firefox 4, Konqueror, Opera, obscure browsers]\n// Many browsers do not split properly with regular expressions or they\n// do not perform the split correctly under obscure conditions.\n// See http://blog.stevenlevithan.com/archives/cross-browser-split\n// I've tested in many browsers and this seems to cover the deviant ones:\n//    'ab'.split(/(?:ab)*/) should be [\"\", \"\"], not [\"\"]\n//    '.'.split(/(.?)(.?)/) should be [\"\", \".\", \"\", \"\"], not [\"\", \"\"]\n//    'tesst'.split(/(s)*/) should be [\"t\", undefined, \"e\", \"s\", \"t\"], not\n//       [undefined, \"t\", undefined, \"e\", ...]\n//    ''.split(/.?/) should be [], not [\"\"]\n//    '.'.split(/()()/) should be [\".\"], not [\"\", \"\", \".\"]\n\nvar string_split = StringPrototype.split;\nif (\n    'ab'.split(/(?:ab)*/).length !== 2 ||\n    '.'.split(/(.?)(.?)/).length !== 4 ||\n    'tesst'.split(/(s)*/)[1] === 't' ||\n    'test'.split(/(?:)/, -1).length !== 4 ||\n    ''.split(/.?/).length ||\n    '.'.split(/()()/).length > 1\n) {\n    (function () {\n        var compliantExecNpcg = /()??/.exec('')[1] === void 0; // NPCG: nonparticipating capturing group\n\n        StringPrototype.split = function (separator, limit) {\n            var string = this;\n            if (separator === void 0 && limit === 0) {\n                return [];\n            }\n\n            // If `separator` is not a regex, use native split\n            if (_toString.call(separator) !== '[object RegExp]') {\n                return string_split.call(this, separator, limit);\n            }\n\n            var output = [],\n                flags = (separator.ignoreCase ? 'i' : '') +\n                        (separator.multiline  ? 'm' : '') +\n                        (separator.extended   ? 'x' : '') + // Proposed for ES6\n                        (separator.sticky     ? 'y' : ''), // Firefox 3+\n                lastLastIndex = 0,\n                // Make `global` and avoid `lastIndex` issues by working with a copy\n                separator2, match, lastIndex, lastLength;\n            separator = new RegExp(separator.source, flags + 'g');\n            string += ''; // Type-convert\n            if (!compliantExecNpcg) {\n                // Doesn't need flags gy, but they don't hurt\n                separator2 = new RegExp('^' + separator.source + '$(?!\\\\s)', flags);\n            }\n            /* Values for `limit`, per the spec:\n             * If undefined: 4294967295 // Math.pow(2, 32) - 1\n             * If 0, Infinity, or NaN: 0\n             * If positive number: limit = Math.floor(limit); if (limit > 4294967295) limit -= 4294967296;\n             * If negative number: 4294967296 - Math.floor(Math.abs(limit))\n             * If other: Type-convert, then use the above rules\n             */\n            limit = limit === void 0 ?\n                -1 >>> 0 : // Math.pow(2, 32) - 1\n                ToUint32(limit);\n            while (match = separator.exec(string)) {\n                // `separator.lastIndex` is not reliable cross-browser\n                lastIndex = match.index + match[0].length;\n                if (lastIndex > lastLastIndex) {\n                    output.push(string.slice(lastLastIndex, match.index));\n                    // Fix browsers whose `exec` methods don't consistently return `undefined` for\n                    // nonparticipating capturing groups\n                    if (!compliantExecNpcg && match.length > 1) {\n                        match[0].replace(separator2, function () {\n                            for (var i = 1; i < arguments.length - 2; i++) {\n                                if (arguments[i] === void 0) {\n                                    match[i] = void 0;\n                                }\n                            }\n                        });\n                    }\n                    if (match.length > 1 && match.index < string.length) {\n                        ArrayPrototype.push.apply(output, match.slice(1));\n                    }\n                    lastLength = match[0].length;\n                    lastLastIndex = lastIndex;\n                    if (output.length >= limit) {\n                        break;\n                    }\n                }\n                if (separator.lastIndex === match.index) {\n                    separator.lastIndex++; // Avoid an infinite loop\n                }\n            }\n            if (lastLastIndex === string.length) {\n                if (lastLength || !separator.test('')) {\n                    output.push('');\n                }\n            } else {\n                output.push(string.slice(lastLastIndex));\n            }\n            return output.length > limit ? output.slice(0, limit) : output;\n        };\n    }());\n\n// [bugfix, chrome]\n// If separator is undefined, then the result array contains just one String,\n// which is the this value (converted to a String). If limit is not undefined,\n// then the output array is truncated so that it contains no more than limit\n// elements.\n// \"0\".split(undefined, 0) -> []\n} else if ('0'.split(void 0, 0).length) {\n    StringPrototype.split = function split(separator, limit) {\n        if (separator === void 0 && limit === 0) { return []; }\n        return string_split.call(this, separator, limit);\n    };\n}\n\n// ECMA-262, 3rd B.2.3\n// Not an ECMAScript standard, although ECMAScript 3rd Edition has a\n// non-normative section suggesting uniform semantics and it should be\n// normalized across all browsers\n// [bugfix, IE lt 9] IE < 9 substr() with negative value not working in IE\nvar string_substr = StringPrototype.substr;\nvar hasNegativeSubstrBug = ''.substr && '0b'.substr(-1) !== 'b';\ndefineProperties(StringPrototype, {\n    substr: function substr(start, length) {\n        return string_substr.call(\n            this,\n            start < 0 ? ((start = this.length + start) < 0 ? 0 : start) : start,\n            length\n        );\n    }\n}, hasNegativeSubstrBug);\n\n},{}],16:[function(require,module,exports){\n'use strict';\n\nmodule.exports = [\n  // streaming transports\n  require('./transport/websocket')\n, require('./transport/xhr-streaming')\n, require('./transport/xdr-streaming')\n, require('./transport/eventsource')\n, require('./transport/lib/iframe-wrap')(require('./transport/eventsource'))\n\n  // polling transports\n, require('./transport/htmlfile')\n, require('./transport/lib/iframe-wrap')(require('./transport/htmlfile'))\n, require('./transport/xhr-polling')\n, require('./transport/xdr-polling')\n, require('./transport/lib/iframe-wrap')(require('./transport/xhr-polling'))\n, require('./transport/jsonp-polling')\n];\n\n},{\"./transport/eventsource\":20,\"./transport/htmlfile\":21,\"./transport/jsonp-polling\":23,\"./transport/lib/iframe-wrap\":26,\"./transport/websocket\":38,\"./transport/xdr-polling\":39,\"./transport/xdr-streaming\":40,\"./transport/xhr-polling\":41,\"./transport/xhr-streaming\":42}],17:[function(require,module,exports){\n(function (process,global){\n'use strict';\n\nvar EventEmitter = require('events').EventEmitter\n  , inherits = require('inherits')\n  , utils = require('../../utils/event')\n  , urlUtils = require('../../utils/url')\n  , XHR = global.XMLHttpRequest\n  ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n  debug = require('debug')('sockjs-client:browser:xhr');\n}\n\nfunction AbstractXHRObject(method, url, payload, opts) {\n  debug(method, url);\n  var self = this;\n  EventEmitter.call(this);\n\n  setTimeout(function () {\n    self._start(method, url, payload, opts);\n  }, 0);\n}\n\ninherits(AbstractXHRObject, EventEmitter);\n\nAbstractXHRObject.prototype._start = function(method, url, payload, opts) {\n  var self = this;\n\n  try {\n    this.xhr = new XHR();\n  } catch (x) {\n    // intentionally empty\n  }\n\n  if (!this.xhr) {\n    debug('no xhr');\n    this.emit('finish', 0, 'no xhr support');\n    this._cleanup();\n    return;\n  }\n\n  // several browsers cache POSTs\n  url = urlUtils.addQuery(url, 't=' + (+new Date()));\n\n  // Explorer tends to keep connection open, even after the\n  // tab gets closed: http://bugs.jquery.com/ticket/5280\n  this.unloadRef = utils.unloadAdd(function() {\n    debug('unload cleanup');\n    self._cleanup(true);\n  });\n  try {\n    this.xhr.open(method, url, true);\n    if (this.timeout && 'timeout' in this.xhr) {\n      this.xhr.timeout = this.timeout;\n      this.xhr.ontimeout = function() {\n        debug('xhr timeout');\n        self.emit('finish', 0, '');\n        self._cleanup(false);\n      };\n    }\n  } catch (e) {\n    debug('exception', e);\n    // IE raises an exception on wrong port.\n    this.emit('finish', 0, '');\n    this._cleanup(false);\n    return;\n  }\n\n  if ((!opts || !opts.noCredentials) && AbstractXHRObject.supportsCORS) {\n    debug('withCredentials');\n    // Mozilla docs says https://developer.mozilla.org/en/XMLHttpRequest :\n    // \"This never affects same-site requests.\"\n\n    this.xhr.withCredentials = true;\n  }\n  if (opts && opts.headers) {\n    for (var key in opts.headers) {\n      this.xhr.setRequestHeader(key, opts.headers[key]);\n    }\n  }\n\n  this.xhr.onreadystatechange = function() {\n    if (self.xhr) {\n      var x = self.xhr;\n      var text, status;\n      debug('readyState', x.readyState);\n      switch (x.readyState) {\n      case 3:\n        // IE doesn't like peeking into responseText or status\n        // on Microsoft.XMLHTTP and readystate=3\n        try {\n          status = x.status;\n          text = x.responseText;\n        } catch (e) {\n          // intentionally empty\n        }\n        debug('status', status);\n        // IE returns 1223 for 204: http://bugs.jquery.com/ticket/1450\n        if (status === 1223) {\n          status = 204;\n        }\n\n        // IE does return readystate == 3 for 404 answers.\n        if (status === 200 && text && text.length > 0) {\n          debug('chunk');\n          self.emit('chunk', status, text);\n        }\n        break;\n      case 4:\n        status = x.status;\n        debug('status', status);\n        // IE returns 1223 for 204: http://bugs.jquery.com/ticket/1450\n        if (status === 1223) {\n          status = 204;\n        }\n        // IE returns this for a bad port\n        // http://msdn.microsoft.com/en-us/library/windows/desktop/aa383770(v=vs.85).aspx\n        if (status === 12005 || status === 12029) {\n          status = 0;\n        }\n\n        debug('finish', status, x.responseText);\n        self.emit('finish', status, x.responseText);\n        self._cleanup(false);\n        break;\n      }\n    }\n  };\n\n  try {\n    self.xhr.send(payload);\n  } catch (e) {\n    self.emit('finish', 0, '');\n    self._cleanup(false);\n  }\n};\n\nAbstractXHRObject.prototype._cleanup = function(abort) {\n  debug('cleanup');\n  if (!this.xhr) {\n    return;\n  }\n  this.removeAllListeners();\n  utils.unloadDel(this.unloadRef);\n\n  // IE needs this field to be a function\n  this.xhr.onreadystatechange = function() {};\n  if (this.xhr.ontimeout) {\n    this.xhr.ontimeout = null;\n  }\n\n  if (abort) {\n    try {\n      this.xhr.abort();\n    } catch (x) {\n      // intentionally empty\n    }\n  }\n  this.unloadRef = this.xhr = null;\n};\n\nAbstractXHRObject.prototype.close = function() {\n  debug('close');\n  this._cleanup(true);\n};\n\nAbstractXHRObject.enabled = !!XHR;\n// override XMLHttpRequest for IE6/7\n// obfuscate to avoid firewalls\nvar axo = ['Active'].concat('Object').join('X');\nif (!AbstractXHRObject.enabled && (axo in global)) {\n  debug('overriding xmlhttprequest');\n  XHR = function() {\n    try {\n      return new global[axo]('Microsoft.XMLHTTP');\n    } catch (e) {\n      return null;\n    }\n  };\n  AbstractXHRObject.enabled = !!new XHR();\n}\n\nvar cors = false;\ntry {\n  cors = 'withCredentials' in new XHR();\n} catch (ignored) {\n  // intentionally empty\n}\n\nAbstractXHRObject.supportsCORS = cors;\n\nmodule.exports = AbstractXHRObject;\n\n}).call(this,{ env: {} },typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n\n},{\"../../utils/event\":46,\"../../utils/url\":52,\"debug\":55,\"events\":3,\"inherits\":57}],18:[function(require,module,exports){\n(function (global){\nmodule.exports = global.EventSource;\n\n}).call(this,typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n\n},{}],19:[function(require,module,exports){\n(function (global){\n'use strict';\n\nvar Driver = global.WebSocket || global.MozWebSocket;\nif (Driver) {\n\tmodule.exports = function WebSocketBrowserDriver(url) {\n\t\treturn new Driver(url);\n\t};\n} else {\n\tmodule.exports = undefined;\n}\n\n}).call(this,typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n\n},{}],20:[function(require,module,exports){\n'use strict';\n\nvar inherits = require('inherits')\n  , AjaxBasedTransport = require('./lib/ajax-based')\n  , EventSourceReceiver = require('./receiver/eventsource')\n  , XHRCorsObject = require('./sender/xhr-cors')\n  , EventSourceDriver = require('eventsource')\n  ;\n\nfunction EventSourceTransport(transUrl) {\n  if (!EventSourceTransport.enabled()) {\n    throw new Error('Transport created when disabled');\n  }\n\n  AjaxBasedTransport.call(this, transUrl, '/eventsource', EventSourceReceiver, XHRCorsObject);\n}\n\ninherits(EventSourceTransport, AjaxBasedTransport);\n\nEventSourceTransport.enabled = function() {\n  return !!EventSourceDriver;\n};\n\nEventSourceTransport.transportName = 'eventsource';\nEventSourceTransport.roundTrips = 2;\n\nmodule.exports = EventSourceTransport;\n\n},{\"./lib/ajax-based\":24,\"./receiver/eventsource\":29,\"./sender/xhr-cors\":35,\"eventsource\":18,\"inherits\":57}],21:[function(require,module,exports){\n'use strict';\n\nvar inherits = require('inherits')\n  , HtmlfileReceiver = require('./receiver/htmlfile')\n  , XHRLocalObject = require('./sender/xhr-local')\n  , AjaxBasedTransport = require('./lib/ajax-based')\n  ;\n\nfunction HtmlFileTransport(transUrl) {\n  if (!HtmlfileReceiver.enabled) {\n    throw new Error('Transport created when disabled');\n  }\n  AjaxBasedTransport.call(this, transUrl, '/htmlfile', HtmlfileReceiver, XHRLocalObject);\n}\n\ninherits(HtmlFileTransport, AjaxBasedTransport);\n\nHtmlFileTransport.enabled = function(info) {\n  return HtmlfileReceiver.enabled && info.sameOrigin;\n};\n\nHtmlFileTransport.transportName = 'htmlfile';\nHtmlFileTransport.roundTrips = 2;\n\nmodule.exports = HtmlFileTransport;\n\n},{\"./lib/ajax-based\":24,\"./receiver/htmlfile\":30,\"./sender/xhr-local\":37,\"inherits\":57}],22:[function(require,module,exports){\n(function (process){\n'use strict';\n\n// Few cool transports do work only for same-origin. In order to make\n// them work cross-domain we shall use iframe, served from the\n// remote domain. New browsers have capabilities to communicate with\n// cross domain iframe using postMessage(). In IE it was implemented\n// from IE 8+, but of course, IE got some details wrong:\n//    http://msdn.microsoft.com/en-us/library/cc197015(v=VS.85).aspx\n//    http://stevesouders.com/misc/test-postmessage.php\n\nvar inherits = require('inherits')\n  , JSON3 = require('json3')\n  , EventEmitter = require('events').EventEmitter\n  , version = require('../version')\n  , urlUtils = require('../utils/url')\n  , iframeUtils = require('../utils/iframe')\n  , eventUtils = require('../utils/event')\n  , random = require('../utils/random')\n  ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n  debug = require('debug')('sockjs-client:transport:iframe');\n}\n\nfunction IframeTransport(transport, transUrl, baseUrl) {\n  if (!IframeTransport.enabled()) {\n    throw new Error('Transport created when disabled');\n  }\n  EventEmitter.call(this);\n\n  var self = this;\n  this.origin = urlUtils.getOrigin(baseUrl);\n  this.baseUrl = baseUrl;\n  this.transUrl = transUrl;\n  this.transport = transport;\n  this.windowId = random.string(8);\n\n  var iframeUrl = urlUtils.addPath(baseUrl, '/iframe.html') + '#' + this.windowId;\n  debug(transport, transUrl, iframeUrl);\n\n  this.iframeObj = iframeUtils.createIframe(iframeUrl, function(r) {\n    debug('err callback');\n    self.emit('close', 1006, 'Unable to load an iframe (' + r + ')');\n    self.close();\n  });\n\n  this.onmessageCallback = this._message.bind(this);\n  eventUtils.attachEvent('message', this.onmessageCallback);\n}\n\ninherits(IframeTransport, EventEmitter);\n\nIframeTransport.prototype.close = function() {\n  debug('close');\n  this.removeAllListeners();\n  if (this.iframeObj) {\n    eventUtils.detachEvent('message', this.onmessageCallback);\n    try {\n      // When the iframe is not loaded, IE raises an exception\n      // on 'contentWindow'.\n      this.postMessage('c');\n    } catch (x) {\n      // intentionally empty\n    }\n    this.iframeObj.cleanup();\n    this.iframeObj = null;\n    this.onmessageCallback = this.iframeObj = null;\n  }\n};\n\nIframeTransport.prototype._message = function(e) {\n  debug('message', e.data);\n  if (!urlUtils.isOriginEqual(e.origin, this.origin)) {\n    debug('not same origin', e.origin, this.origin);\n    return;\n  }\n\n  var iframeMessage;\n  try {\n    iframeMessage = JSON3.parse(e.data);\n  } catch (ignored) {\n    debug('bad json', e.data);\n    return;\n  }\n\n  if (iframeMessage.windowId !== this.windowId) {\n    debug('mismatched window id', iframeMessage.windowId, this.windowId);\n    return;\n  }\n\n  switch (iframeMessage.type) {\n  case 's':\n    this.iframeObj.loaded();\n    // window global dependency\n    this.postMessage('s', JSON3.stringify([\n      version\n    , this.transport\n    , this.transUrl\n    , this.baseUrl\n    ]));\n    break;\n  case 't':\n    this.emit('message', iframeMessage.data);\n    break;\n  case 'c':\n    var cdata;\n    try {\n      cdata = JSON3.parse(iframeMessage.data);\n    } catch (ignored) {\n      debug('bad json', iframeMessage.data);\n      return;\n    }\n    this.emit('close', cdata[0], cdata[1]);\n    this.close();\n    break;\n  }\n};\n\nIframeTransport.prototype.postMessage = function(type, data) {\n  debug('postMessage', type, data);\n  this.iframeObj.post(JSON3.stringify({\n    windowId: this.windowId\n  , type: type\n  , data: data || ''\n  }), this.origin);\n};\n\nIframeTransport.prototype.send = function(message) {\n  debug('send', message);\n  this.postMessage('m', message);\n};\n\nIframeTransport.enabled = function() {\n  return iframeUtils.iframeEnabled;\n};\n\nIframeTransport.transportName = 'iframe';\nIframeTransport.roundTrips = 2;\n\nmodule.exports = IframeTransport;\n\n}).call(this,{ env: {} })\n\n},{\"../utils/event\":46,\"../utils/iframe\":47,\"../utils/random\":50,\"../utils/url\":52,\"../version\":53,\"debug\":55,\"events\":3,\"inherits\":57,\"json3\":58}],23:[function(require,module,exports){\n(function (global){\n'use strict';\n\n// The simplest and most robust transport, using the well-know cross\n// domain hack - JSONP. This transport is quite inefficient - one\n// message could use up to one http request. But at least it works almost\n// everywhere.\n// Known limitations:\n//   o you will get a spinning cursor\n//   o for Konqueror a dumb timer is needed to detect errors\n\nvar inherits = require('inherits')\n  , SenderReceiver = require('./lib/sender-receiver')\n  , JsonpReceiver = require('./receiver/jsonp')\n  , jsonpSender = require('./sender/jsonp')\n  ;\n\nfunction JsonPTransport(transUrl) {\n  if (!JsonPTransport.enabled()) {\n    throw new Error('Transport created when disabled');\n  }\n  SenderReceiver.call(this, transUrl, '/jsonp', jsonpSender, JsonpReceiver);\n}\n\ninherits(JsonPTransport, SenderReceiver);\n\nJsonPTransport.enabled = function() {\n  return !!global.document;\n};\n\nJsonPTransport.transportName = 'jsonp-polling';\nJsonPTransport.roundTrips = 1;\nJsonPTransport.needBody = true;\n\nmodule.exports = JsonPTransport;\n\n}).call(this,typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n\n},{\"./lib/sender-receiver\":28,\"./receiver/jsonp\":31,\"./sender/jsonp\":33,\"inherits\":57}],24:[function(require,module,exports){\n(function (process){\n'use strict';\n\nvar inherits = require('inherits')\n  , urlUtils = require('../../utils/url')\n  , SenderReceiver = require('./sender-receiver')\n  ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n  debug = require('debug')('sockjs-client:ajax-based');\n}\n\nfunction createAjaxSender(AjaxObject) {\n  return function(url, payload, callback) {\n    debug('create ajax sender', url, payload);\n    var opt = {};\n    if (typeof payload === 'string') {\n      opt.headers = {'Content-type': 'text/plain'};\n    }\n    var ajaxUrl = urlUtils.addPath(url, '/xhr_send');\n    var xo = new AjaxObject('POST', ajaxUrl, payload, opt);\n    xo.once('finish', function(status) {\n      debug('finish', status);\n      xo = null;\n\n      if (status !== 200 && status !== 204) {\n        return callback(new Error('http status ' + status));\n      }\n      callback();\n    });\n    return function() {\n      debug('abort');\n      xo.close();\n      xo = null;\n\n      var err = new Error('Aborted');\n      err.code = 1000;\n      callback(err);\n    };\n  };\n}\n\nfunction AjaxBasedTransport(transUrl, urlSuffix, Receiver, AjaxObject) {\n  SenderReceiver.call(this, transUrl, urlSuffix, createAjaxSender(AjaxObject), Receiver, AjaxObject);\n}\n\ninherits(AjaxBasedTransport, SenderReceiver);\n\nmodule.exports = AjaxBasedTransport;\n\n}).call(this,{ env: {} })\n\n},{\"../../utils/url\":52,\"./sender-receiver\":28,\"debug\":55,\"inherits\":57}],25:[function(require,module,exports){\n(function (process){\n'use strict';\n\nvar inherits = require('inherits')\n  , EventEmitter = require('events').EventEmitter\n  ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n  debug = require('debug')('sockjs-client:buffered-sender');\n}\n\nfunction BufferedSender(url, sender) {\n  debug(url);\n  EventEmitter.call(this);\n  this.sendBuffer = [];\n  this.sender = sender;\n  this.url = url;\n}\n\ninherits(BufferedSender, EventEmitter);\n\nBufferedSender.prototype.send = function(message) {\n  debug('send', message);\n  this.sendBuffer.push(message);\n  if (!this.sendStop) {\n    this.sendSchedule();\n  }\n};\n\n// For polling transports in a situation when in the message callback,\n// new message is being send. If the sending connection was started\n// before receiving one, it is possible to saturate the network and\n// timeout due to the lack of receiving socket. To avoid that we delay\n// sending messages by some small time, in order to let receiving\n// connection be started beforehand. This is only a halfmeasure and\n// does not fix the big problem, but it does make the tests go more\n// stable on slow networks.\nBufferedSender.prototype.sendScheduleWait = function() {\n  debug('sendScheduleWait');\n  var self = this;\n  var tref;\n  this.sendStop = function() {\n    debug('sendStop');\n    self.sendStop = null;\n    clearTimeout(tref);\n  };\n  tref = setTimeout(function() {\n    debug('timeout');\n    self.sendStop = null;\n    self.sendSchedule();\n  }, 25);\n};\n\nBufferedSender.prototype.sendSchedule = function() {\n  debug('sendSchedule', this.sendBuffer.length);\n  var self = this;\n  if (this.sendBuffer.length > 0) {\n    var payload = '[' + this.sendBuffer.join(',') + ']';\n    this.sendStop = this.sender(this.url, payload, function(err) {\n      self.sendStop = null;\n      if (err) {\n        debug('error', err);\n        self.emit('close', err.code || 1006, 'Sending error: ' + err);\n        self.close();\n      } else {\n        self.sendScheduleWait();\n      }\n    });\n    this.sendBuffer = [];\n  }\n};\n\nBufferedSender.prototype._cleanup = function() {\n  debug('_cleanup');\n  this.removeAllListeners();\n};\n\nBufferedSender.prototype.close = function() {\n  debug('close');\n  this._cleanup();\n  if (this.sendStop) {\n    this.sendStop();\n    this.sendStop = null;\n  }\n};\n\nmodule.exports = BufferedSender;\n\n}).call(this,{ env: {} })\n\n},{\"debug\":55,\"events\":3,\"inherits\":57}],26:[function(require,module,exports){\n(function (global){\n'use strict';\n\nvar inherits = require('inherits')\n  , IframeTransport = require('../iframe')\n  , objectUtils = require('../../utils/object')\n  ;\n\nmodule.exports = function(transport) {\n\n  function IframeWrapTransport(transUrl, baseUrl) {\n    IframeTransport.call(this, transport.transportName, transUrl, baseUrl);\n  }\n\n  inherits(IframeWrapTransport, IframeTransport);\n\n  IframeWrapTransport.enabled = function(url, info) {\n    if (!global.document) {\n      return false;\n    }\n\n    var iframeInfo = objectUtils.extend({}, info);\n    iframeInfo.sameOrigin = true;\n    return transport.enabled(iframeInfo) && IframeTransport.enabled();\n  };\n\n  IframeWrapTransport.transportName = 'iframe-' + transport.transportName;\n  IframeWrapTransport.needBody = true;\n  IframeWrapTransport.roundTrips = IframeTransport.roundTrips + transport.roundTrips - 1; // html, javascript (2) + transport - no CORS (1)\n\n  IframeWrapTransport.facadeTransport = transport;\n\n  return IframeWrapTransport;\n};\n\n}).call(this,typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n\n},{\"../../utils/object\":49,\"../iframe\":22,\"inherits\":57}],27:[function(require,module,exports){\n(function (process){\n'use strict';\n\nvar inherits = require('inherits')\n  , EventEmitter = require('events').EventEmitter\n  ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n  debug = require('debug')('sockjs-client:polling');\n}\n\nfunction Polling(Receiver, receiveUrl, AjaxObject) {\n  debug(receiveUrl);\n  EventEmitter.call(this);\n  this.Receiver = Receiver;\n  this.receiveUrl = receiveUrl;\n  this.AjaxObject = AjaxObject;\n  this._scheduleReceiver();\n}\n\ninherits(Polling, EventEmitter);\n\nPolling.prototype._scheduleReceiver = function() {\n  debug('_scheduleReceiver');\n  var self = this;\n  var poll = this.poll = new this.Receiver(this.receiveUrl, this.AjaxObject);\n\n  poll.on('message', function(msg) {\n    debug('message', msg);\n    self.emit('message', msg);\n  });\n\n  poll.once('close', function(code, reason) {\n    debug('close', code, reason, self.pollIsClosing);\n    self.poll = poll = null;\n\n    if (!self.pollIsClosing) {\n      if (reason === 'network') {\n        self._scheduleReceiver();\n      } else {\n        self.emit('close', code || 1006, reason);\n        self.removeAllListeners();\n      }\n    }\n  });\n};\n\nPolling.prototype.abort = function() {\n  debug('abort');\n  this.removeAllListeners();\n  this.pollIsClosing = true;\n  if (this.poll) {\n    this.poll.abort();\n  }\n};\n\nmodule.exports = Polling;\n\n}).call(this,{ env: {} })\n\n},{\"debug\":55,\"events\":3,\"inherits\":57}],28:[function(require,module,exports){\n(function (process){\n'use strict';\n\nvar inherits = require('inherits')\n  , urlUtils = require('../../utils/url')\n  , BufferedSender = require('./buffered-sender')\n  , Polling = require('./polling')\n  ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n  debug = require('debug')('sockjs-client:sender-receiver');\n}\n\nfunction SenderReceiver(transUrl, urlSuffix, senderFunc, Receiver, AjaxObject) {\n  var pollUrl = urlUtils.addPath(transUrl, urlSuffix);\n  debug(pollUrl);\n  var self = this;\n  BufferedSender.call(this, transUrl, senderFunc);\n\n  this.poll = new Polling(Receiver, pollUrl, AjaxObject);\n  this.poll.on('message', function(msg) {\n    debug('poll message', msg);\n    self.emit('message', msg);\n  });\n  this.poll.once('close', function(code, reason) {\n    debug('poll close', code, reason);\n    self.poll = null;\n    self.emit('close', code, reason);\n    self.close();\n  });\n}\n\ninherits(SenderReceiver, BufferedSender);\n\nSenderReceiver.prototype.close = function() {\n  BufferedSender.prototype.close.call(this);\n  debug('close');\n  this.removeAllListeners();\n  if (this.poll) {\n    this.poll.abort();\n    this.poll = null;\n  }\n};\n\nmodule.exports = SenderReceiver;\n\n}).call(this,{ env: {} })\n\n},{\"../../utils/url\":52,\"./buffered-sender\":25,\"./polling\":27,\"debug\":55,\"inherits\":57}],29:[function(require,module,exports){\n(function (process){\n'use strict';\n\nvar inherits = require('inherits')\n  , EventEmitter = require('events').EventEmitter\n  , EventSourceDriver = require('eventsource')\n  ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n  debug = require('debug')('sockjs-client:receiver:eventsource');\n}\n\nfunction EventSourceReceiver(url) {\n  debug(url);\n  EventEmitter.call(this);\n\n  var self = this;\n  var es = this.es = new EventSourceDriver(url);\n  es.onmessage = function(e) {\n    debug('message', e.data);\n    self.emit('message', decodeURI(e.data));\n  };\n  es.onerror = function(e) {\n    debug('error', es.readyState, e);\n    // ES on reconnection has readyState = 0 or 1.\n    // on network error it's CLOSED = 2\n    var reason = (es.readyState !== 2 ? 'network' : 'permanent');\n    self._cleanup();\n    self._close(reason);\n  };\n}\n\ninherits(EventSourceReceiver, EventEmitter);\n\nEventSourceReceiver.prototype.abort = function() {\n  debug('abort');\n  this._cleanup();\n  this._close('user');\n};\n\nEventSourceReceiver.prototype._cleanup = function() {\n  debug('cleanup');\n  var es = this.es;\n  if (es) {\n    es.onmessage = es.onerror = null;\n    es.close();\n    this.es = null;\n  }\n};\n\nEventSourceReceiver.prototype._close = function(reason) {\n  debug('close', reason);\n  var self = this;\n  // Safari and chrome < 15 crash if we close window before\n  // waiting for ES cleanup. See:\n  // https://code.google.com/p/chromium/issues/detail?id=89155\n  setTimeout(function() {\n    self.emit('close', null, reason);\n    self.removeAllListeners();\n  }, 200);\n};\n\nmodule.exports = EventSourceReceiver;\n\n}).call(this,{ env: {} })\n\n},{\"debug\":55,\"events\":3,\"eventsource\":18,\"inherits\":57}],30:[function(require,module,exports){\n(function (process,global){\n'use strict';\n\nvar inherits = require('inherits')\n  , iframeUtils = require('../../utils/iframe')\n  , urlUtils = require('../../utils/url')\n  , EventEmitter = require('events').EventEmitter\n  , random = require('../../utils/random')\n  ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n  debug = require('debug')('sockjs-client:receiver:htmlfile');\n}\n\nfunction HtmlfileReceiver(url) {\n  debug(url);\n  EventEmitter.call(this);\n  var self = this;\n  iframeUtils.polluteGlobalNamespace();\n\n  this.id = 'a' + random.string(6);\n  url = urlUtils.addQuery(url, 'c=' + decodeURIComponent(iframeUtils.WPrefix + '.' + this.id));\n\n  debug('using htmlfile', HtmlfileReceiver.htmlfileEnabled);\n  var constructFunc = HtmlfileReceiver.htmlfileEnabled ?\n      iframeUtils.createHtmlfile : iframeUtils.createIframe;\n\n  global[iframeUtils.WPrefix][this.id] = {\n    start: function() {\n      debug('start');\n      self.iframeObj.loaded();\n    }\n  , message: function(data) {\n      debug('message', data);\n      self.emit('message', data);\n    }\n  , stop: function() {\n      debug('stop');\n      self._cleanup();\n      self._close('network');\n    }\n  };\n  this.iframeObj = constructFunc(url, function() {\n    debug('callback');\n    self._cleanup();\n    self._close('permanent');\n  });\n}\n\ninherits(HtmlfileReceiver, EventEmitter);\n\nHtmlfileReceiver.prototype.abort = function() {\n  debug('abort');\n  this._cleanup();\n  this._close('user');\n};\n\nHtmlfileReceiver.prototype._cleanup = function() {\n  debug('_cleanup');\n  if (this.iframeObj) {\n    this.iframeObj.cleanup();\n    this.iframeObj = null;\n  }\n  delete global[iframeUtils.WPrefix][this.id];\n};\n\nHtmlfileReceiver.prototype._close = function(reason) {\n  debug('_close', reason);\n  this.emit('close', null, reason);\n  this.removeAllListeners();\n};\n\nHtmlfileReceiver.htmlfileEnabled = false;\n\n// obfuscate to avoid firewalls\nvar axo = ['Active'].concat('Object').join('X');\nif (axo in global) {\n  try {\n    HtmlfileReceiver.htmlfileEnabled = !!new global[axo]('htmlfile');\n  } catch (x) {\n    // intentionally empty\n  }\n}\n\nHtmlfileReceiver.enabled = HtmlfileReceiver.htmlfileEnabled || iframeUtils.iframeEnabled;\n\nmodule.exports = HtmlfileReceiver;\n\n}).call(this,{ env: {} },typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n\n},{\"../../utils/iframe\":47,\"../../utils/random\":50,\"../../utils/url\":52,\"debug\":55,\"events\":3,\"inherits\":57}],31:[function(require,module,exports){\n(function (process,global){\n'use strict';\n\nvar utils = require('../../utils/iframe')\n  , random = require('../../utils/random')\n  , browser = require('../../utils/browser')\n  , urlUtils = require('../../utils/url')\n  , inherits = require('inherits')\n  , EventEmitter = require('events').EventEmitter\n  ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n  debug = require('debug')('sockjs-client:receiver:jsonp');\n}\n\nfunction JsonpReceiver(url) {\n  debug(url);\n  var self = this;\n  EventEmitter.call(this);\n\n  utils.polluteGlobalNamespace();\n\n  this.id = 'a' + random.string(6);\n  var urlWithId = urlUtils.addQuery(url, 'c=' + encodeURIComponent(utils.WPrefix + '.' + this.id));\n\n  global[utils.WPrefix][this.id] = this._callback.bind(this);\n  this._createScript(urlWithId);\n\n  // Fallback mostly for Konqueror - stupid timer, 35 seconds shall be plenty.\n  this.timeoutId = setTimeout(function() {\n    debug('timeout');\n    self._abort(new Error('JSONP script loaded abnormally (timeout)'));\n  }, JsonpReceiver.timeout);\n}\n\ninherits(JsonpReceiver, EventEmitter);\n\nJsonpReceiver.prototype.abort = function() {\n  debug('abort');\n  if (global[utils.WPrefix][this.id]) {\n    var err = new Error('JSONP user aborted read');\n    err.code = 1000;\n    this._abort(err);\n  }\n};\n\nJsonpReceiver.timeout = 35000;\nJsonpReceiver.scriptErrorTimeout = 1000;\n\nJsonpReceiver.prototype._callback = function(data) {\n  debug('_callback', data);\n  this._cleanup();\n\n  if (this.aborting) {\n    return;\n  }\n\n  if (data) {\n    debug('message', data);\n    this.emit('message', data);\n  }\n  this.emit('close', null, 'network');\n  this.removeAllListeners();\n};\n\nJsonpReceiver.prototype._abort = function(err) {\n  debug('_abort', err);\n  this._cleanup();\n  this.aborting = true;\n  this.emit('close', err.code, err.message);\n  this.removeAllListeners();\n};\n\nJsonpReceiver.prototype._cleanup = function() {\n  debug('_cleanup');\n  clearTimeout(this.timeoutId);\n  if (this.script2) {\n    this.script2.parentNode.removeChild(this.script2);\n    this.script2 = null;\n  }\n  if (this.script) {\n    var script = this.script;\n    // Unfortunately, you can't really abort script loading of\n    // the script.\n    script.parentNode.removeChild(script);\n    script.onreadystatechange = script.onerror =\n        script.onload = script.onclick = null;\n    this.script = null;\n  }\n  delete global[utils.WPrefix][this.id];\n};\n\nJsonpReceiver.prototype._scriptError = function() {\n  debug('_scriptError');\n  var self = this;\n  if (this.errorTimer) {\n    return;\n  }\n\n  this.errorTimer = setTimeout(function() {\n    if (!self.loadedOkay) {\n      self._abort(new Error('JSONP script loaded abnormally (onerror)'));\n    }\n  }, JsonpReceiver.scriptErrorTimeout);\n};\n\nJsonpReceiver.prototype._createScript = function(url) {\n  debug('_createScript', url);\n  var self = this;\n  var script = this.script = global.document.createElement('script');\n  var script2;  // Opera synchronous load trick.\n\n  script.id = 'a' + random.string(8);\n  script.src = url;\n  script.type = 'text/javascript';\n  script.charset = 'UTF-8';\n  script.onerror = this._scriptError.bind(this);\n  script.onload = function() {\n    debug('onload');\n    self._abort(new Error('JSONP script loaded abnormally (onload)'));\n  };\n\n  // IE9 fires 'error' event after onreadystatechange or before, in random order.\n  // Use loadedOkay to determine if actually errored\n  script.onreadystatechange = function() {\n    debug('onreadystatechange', script.readyState);\n    if (/loaded|closed/.test(script.readyState)) {\n      if (script && script.htmlFor && script.onclick) {\n        self.loadedOkay = true;\n        try {\n          // In IE, actually execute the script.\n          script.onclick();\n        } catch (x) {\n          // intentionally empty\n        }\n      }\n      if (script) {\n        self._abort(new Error('JSONP script loaded abnormally (onreadystatechange)'));\n      }\n    }\n  };\n  // IE: event/htmlFor/onclick trick.\n  // One can't rely on proper order for onreadystatechange. In order to\n  // make sure, set a 'htmlFor' and 'event' properties, so that\n  // script code will be installed as 'onclick' handler for the\n  // script object. Later, onreadystatechange, manually execute this\n  // code. FF and Chrome doesn't work with 'event' and 'htmlFor'\n  // set. For reference see:\n  //   http://jaubourg.net/2010/07/loading-script-as-onclick-handler-of.html\n  // Also, read on that about script ordering:\n  //   http://wiki.whatwg.org/wiki/Dynamic_Script_Execution_Order\n  if (typeof script.async === 'undefined' && global.document.attachEvent) {\n    // According to mozilla docs, in recent browsers script.async defaults\n    // to 'true', so we may use it to detect a good browser:\n    // https://developer.mozilla.org/en/HTML/Element/script\n    if (!browser.isOpera()) {\n      // Naively assume we're in IE\n      try {\n        script.htmlFor = script.id;\n        script.event = 'onclick';\n      } catch (x) {\n        // intentionally empty\n      }\n      script.async = true;\n    } else {\n      // Opera, second sync script hack\n      script2 = this.script2 = global.document.createElement('script');\n      script2.text = \"try{var a = document.getElementById('\" + script.id + \"'); if(a)a.onerror();}catch(x){};\";\n      script.async = script2.async = false;\n    }\n  }\n  if (typeof script.async !== 'undefined') {\n    script.async = true;\n  }\n\n  var head = global.document.getElementsByTagName('head')[0];\n  head.insertBefore(script, head.firstChild);\n  if (script2) {\n    head.insertBefore(script2, head.firstChild);\n  }\n};\n\nmodule.exports = JsonpReceiver;\n\n}).call(this,{ env: {} },typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n\n},{\"../../utils/browser\":44,\"../../utils/iframe\":47,\"../../utils/random\":50,\"../../utils/url\":52,\"debug\":55,\"events\":3,\"inherits\":57}],32:[function(require,module,exports){\n(function (process){\n'use strict';\n\nvar inherits = require('inherits')\n  , EventEmitter = require('events').EventEmitter\n  ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n  debug = require('debug')('sockjs-client:receiver:xhr');\n}\n\nfunction XhrReceiver(url, AjaxObject) {\n  debug(url);\n  EventEmitter.call(this);\n  var self = this;\n\n  this.bufferPosition = 0;\n\n  this.xo = new AjaxObject('POST', url, null);\n  this.xo.on('chunk', this._chunkHandler.bind(this));\n  this.xo.once('finish', function(status, text) {\n    debug('finish', status, text);\n    self._chunkHandler(status, text);\n    self.xo = null;\n    var reason = status === 200 ? 'network' : 'permanent';\n    debug('close', reason);\n    self.emit('close', null, reason);\n    self._cleanup();\n  });\n}\n\ninherits(XhrReceiver, EventEmitter);\n\nXhrReceiver.prototype._chunkHandler = function(status, text) {\n  debug('_chunkHandler', status);\n  if (status !== 200 || !text) {\n    return;\n  }\n\n  for (var idx = -1; ; this.bufferPosition += idx + 1) {\n    var buf = text.slice(this.bufferPosition);\n    idx = buf.indexOf('\\n');\n    if (idx === -1) {\n      break;\n    }\n    var msg = buf.slice(0, idx);\n    if (msg) {\n      debug('message', msg);\n      this.emit('message', msg);\n    }\n  }\n};\n\nXhrReceiver.prototype._cleanup = function() {\n  debug('_cleanup');\n  this.removeAllListeners();\n};\n\nXhrReceiver.prototype.abort = function() {\n  debug('abort');\n  if (this.xo) {\n    this.xo.close();\n    debug('close');\n    this.emit('close', null, 'user');\n    this.xo = null;\n  }\n  this._cleanup();\n};\n\nmodule.exports = XhrReceiver;\n\n}).call(this,{ env: {} })\n\n},{\"debug\":55,\"events\":3,\"inherits\":57}],33:[function(require,module,exports){\n(function (process,global){\n'use strict';\n\nvar random = require('../../utils/random')\n  , urlUtils = require('../../utils/url')\n  ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n  debug = require('debug')('sockjs-client:sender:jsonp');\n}\n\nvar form, area;\n\nfunction createIframe(id) {\n  debug('createIframe', id);\n  try {\n    // ie6 dynamic iframes with target=\"\" support (thanks Chris Lambacher)\n    return global.document.createElement('<iframe name=\"' + id + '\">');\n  } catch (x) {\n    var iframe = global.document.createElement('iframe');\n    iframe.name = id;\n    return iframe;\n  }\n}\n\nfunction createForm() {\n  debug('createForm');\n  form = global.document.createElement('form');\n  form.style.display = 'none';\n  form.style.position = 'absolute';\n  form.method = 'POST';\n  form.enctype = 'application/x-www-form-urlencoded';\n  form.acceptCharset = 'UTF-8';\n\n  area = global.document.createElement('textarea');\n  area.name = 'd';\n  form.appendChild(area);\n\n  global.document.body.appendChild(form);\n}\n\nmodule.exports = function(url, payload, callback) {\n  debug(url, payload);\n  if (!form) {\n    createForm();\n  }\n  var id = 'a' + random.string(8);\n  form.target = id;\n  form.action = urlUtils.addQuery(urlUtils.addPath(url, '/jsonp_send'), 'i=' + id);\n\n  var iframe = createIframe(id);\n  iframe.id = id;\n  iframe.style.display = 'none';\n  form.appendChild(iframe);\n\n  try {\n    area.value = payload;\n  } catch (e) {\n    // seriously broken browsers get here\n  }\n  form.submit();\n\n  var completed = function(err) {\n    debug('completed', id, err);\n    if (!iframe.onerror) {\n      return;\n    }\n    iframe.onreadystatechange = iframe.onerror = iframe.onload = null;\n    // Opera mini doesn't like if we GC iframe\n    // immediately, thus this timeout.\n    setTimeout(function() {\n      debug('cleaning up', id);\n      iframe.parentNode.removeChild(iframe);\n      iframe = null;\n    }, 500);\n    area.value = '';\n    // It is not possible to detect if the iframe succeeded or\n    // failed to submit our form.\n    callback(err);\n  };\n  iframe.onerror = function() {\n    debug('onerror', id);\n    completed();\n  };\n  iframe.onload = function() {\n    debug('onload', id);\n    completed();\n  };\n  iframe.onreadystatechange = function(e) {\n    debug('onreadystatechange', id, iframe.readyState, e);\n    if (iframe.readyState === 'complete') {\n      completed();\n    }\n  };\n  return function() {\n    debug('aborted', id);\n    completed(new Error('Aborted'));\n  };\n};\n\n}).call(this,{ env: {} },typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n\n},{\"../../utils/random\":50,\"../../utils/url\":52,\"debug\":55}],34:[function(require,module,exports){\n(function (process,global){\n'use strict';\n\nvar EventEmitter = require('events').EventEmitter\n  , inherits = require('inherits')\n  , eventUtils = require('../../utils/event')\n  , browser = require('../../utils/browser')\n  , urlUtils = require('../../utils/url')\n  ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n  debug = require('debug')('sockjs-client:sender:xdr');\n}\n\n// References:\n//   http://ajaxian.com/archives/100-line-ajax-wrapper\n//   http://msdn.microsoft.com/en-us/library/cc288060(v=VS.85).aspx\n\nfunction XDRObject(method, url, payload) {\n  debug(method, url);\n  var self = this;\n  EventEmitter.call(this);\n\n  setTimeout(function() {\n    self._start(method, url, payload);\n  }, 0);\n}\n\ninherits(XDRObject, EventEmitter);\n\nXDRObject.prototype._start = function(method, url, payload) {\n  debug('_start');\n  var self = this;\n  var xdr = new global.XDomainRequest();\n  // IE caches even POSTs\n  url = urlUtils.addQuery(url, 't=' + (+new Date()));\n\n  xdr.onerror = function() {\n    debug('onerror');\n    self._error();\n  };\n  xdr.ontimeout = function() {\n    debug('ontimeout');\n    self._error();\n  };\n  xdr.onprogress = function() {\n    debug('progress', xdr.responseText);\n    self.emit('chunk', 200, xdr.responseText);\n  };\n  xdr.onload = function() {\n    debug('load');\n    self.emit('finish', 200, xdr.responseText);\n    self._cleanup(false);\n  };\n  this.xdr = xdr;\n  this.unloadRef = eventUtils.unloadAdd(function() {\n    self._cleanup(true);\n  });\n  try {\n    // Fails with AccessDenied if port number is bogus\n    this.xdr.open(method, url);\n    if (this.timeout) {\n      this.xdr.timeout = this.timeout;\n    }\n    this.xdr.send(payload);\n  } catch (x) {\n    this._error();\n  }\n};\n\nXDRObject.prototype._error = function() {\n  this.emit('finish', 0, '');\n  this._cleanup(false);\n};\n\nXDRObject.prototype._cleanup = function(abort) {\n  debug('cleanup', abort);\n  if (!this.xdr) {\n    return;\n  }\n  this.removeAllListeners();\n  eventUtils.unloadDel(this.unloadRef);\n\n  this.xdr.ontimeout = this.xdr.onerror = this.xdr.onprogress = this.xdr.onload = null;\n  if (abort) {\n    try {\n      this.xdr.abort();\n    } catch (x) {\n      // intentionally empty\n    }\n  }\n  this.unloadRef = this.xdr = null;\n};\n\nXDRObject.prototype.close = function() {\n  debug('close');\n  this._cleanup(true);\n};\n\n// IE 8/9 if the request target uses the same scheme - #79\nXDRObject.enabled = !!(global.XDomainRequest && browser.hasDomain());\n\nmodule.exports = XDRObject;\n\n}).call(this,{ env: {} },typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n\n},{\"../../utils/browser\":44,\"../../utils/event\":46,\"../../utils/url\":52,\"debug\":55,\"events\":3,\"inherits\":57}],35:[function(require,module,exports){\n'use strict';\n\nvar inherits = require('inherits')\n  , XhrDriver = require('../driver/xhr')\n  ;\n\nfunction XHRCorsObject(method, url, payload, opts) {\n  XhrDriver.call(this, method, url, payload, opts);\n}\n\ninherits(XHRCorsObject, XhrDriver);\n\nXHRCorsObject.enabled = XhrDriver.enabled && XhrDriver.supportsCORS;\n\nmodule.exports = XHRCorsObject;\n\n},{\"../driver/xhr\":17,\"inherits\":57}],36:[function(require,module,exports){\n'use strict';\n\nvar EventEmitter = require('events').EventEmitter\n  , inherits = require('inherits')\n  ;\n\nfunction XHRFake(/* method, url, payload, opts */) {\n  var self = this;\n  EventEmitter.call(this);\n\n  this.to = setTimeout(function() {\n    self.emit('finish', 200, '{}');\n  }, XHRFake.timeout);\n}\n\ninherits(XHRFake, EventEmitter);\n\nXHRFake.prototype.close = function() {\n  clearTimeout(this.to);\n};\n\nXHRFake.timeout = 2000;\n\nmodule.exports = XHRFake;\n\n},{\"events\":3,\"inherits\":57}],37:[function(require,module,exports){\n'use strict';\n\nvar inherits = require('inherits')\n  , XhrDriver = require('../driver/xhr')\n  ;\n\nfunction XHRLocalObject(method, url, payload /*, opts */) {\n  XhrDriver.call(this, method, url, payload, {\n    noCredentials: true\n  });\n}\n\ninherits(XHRLocalObject, XhrDriver);\n\nXHRLocalObject.enabled = XhrDriver.enabled;\n\nmodule.exports = XHRLocalObject;\n\n},{\"../driver/xhr\":17,\"inherits\":57}],38:[function(require,module,exports){\n(function (process){\n'use strict';\n\nvar utils = require('../utils/event')\n  , urlUtils = require('../utils/url')\n  , inherits = require('inherits')\n  , EventEmitter = require('events').EventEmitter\n  , WebsocketDriver = require('./driver/websocket')\n  ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n  debug = require('debug')('sockjs-client:websocket');\n}\n\nfunction WebSocketTransport(transUrl, ignore, options) {\n  if (!WebSocketTransport.enabled()) {\n    throw new Error('Transport created when disabled');\n  }\n\n  EventEmitter.call(this);\n  debug('constructor', transUrl);\n\n  var self = this;\n  var url = urlUtils.addPath(transUrl, '/websocket');\n  if (url.slice(0, 5) === 'https') {\n    url = 'wss' + url.slice(5);\n  } else {\n    url = 'ws' + url.slice(4);\n  }\n  this.url = url;\n\n  this.ws = new WebsocketDriver(this.url, [], options);\n  this.ws.onmessage = function(e) {\n    debug('message event', e.data);\n    self.emit('message', e.data);\n  };\n  // Firefox has an interesting bug. If a websocket connection is\n  // created after onunload, it stays alive even when user\n  // navigates away from the page. In such situation let's lie -\n  // let's not open the ws connection at all. See:\n  // https://github.com/sockjs/sockjs-client/issues/28\n  // https://bugzilla.mozilla.org/show_bug.cgi?id=696085\n  this.unloadRef = utils.unloadAdd(function() {\n    debug('unload');\n    self.ws.close();\n  });\n  this.ws.onclose = function(e) {\n    debug('close event', e.code, e.reason);\n    self.emit('close', e.code, e.reason);\n    self._cleanup();\n  };\n  this.ws.onerror = function(e) {\n    debug('error event', e);\n    self.emit('close', 1006, 'WebSocket connection broken');\n    self._cleanup();\n  };\n}\n\ninherits(WebSocketTransport, EventEmitter);\n\nWebSocketTransport.prototype.send = function(data) {\n  var msg = '[' + data + ']';\n  debug('send', msg);\n  this.ws.send(msg);\n};\n\nWebSocketTransport.prototype.close = function() {\n  debug('close');\n  var ws = this.ws;\n  this._cleanup();\n  if (ws) {\n    ws.close();\n  }\n};\n\nWebSocketTransport.prototype._cleanup = function() {\n  debug('_cleanup');\n  var ws = this.ws;\n  if (ws) {\n    ws.onmessage = ws.onclose = ws.onerror = null;\n  }\n  utils.unloadDel(this.unloadRef);\n  this.unloadRef = this.ws = null;\n  this.removeAllListeners();\n};\n\nWebSocketTransport.enabled = function() {\n  debug('enabled');\n  return !!WebsocketDriver;\n};\nWebSocketTransport.transportName = 'websocket';\n\n// In theory, ws should require 1 round trip. But in chrome, this is\n// not very stable over SSL. Most likely a ws connection requires a\n// separate SSL connection, in which case 2 round trips are an\n// absolute minumum.\nWebSocketTransport.roundTrips = 2;\n\nmodule.exports = WebSocketTransport;\n\n}).call(this,{ env: {} })\n\n},{\"../utils/event\":46,\"../utils/url\":52,\"./driver/websocket\":19,\"debug\":55,\"events\":3,\"inherits\":57}],39:[function(require,module,exports){\n'use strict';\n\nvar inherits = require('inherits')\n  , AjaxBasedTransport = require('./lib/ajax-based')\n  , XdrStreamingTransport = require('./xdr-streaming')\n  , XhrReceiver = require('./receiver/xhr')\n  , XDRObject = require('./sender/xdr')\n  ;\n\nfunction XdrPollingTransport(transUrl) {\n  if (!XDRObject.enabled) {\n    throw new Error('Transport created when disabled');\n  }\n  AjaxBasedTransport.call(this, transUrl, '/xhr', XhrReceiver, XDRObject);\n}\n\ninherits(XdrPollingTransport, AjaxBasedTransport);\n\nXdrPollingTransport.enabled = XdrStreamingTransport.enabled;\nXdrPollingTransport.transportName = 'xdr-polling';\nXdrPollingTransport.roundTrips = 2; // preflight, ajax\n\nmodule.exports = XdrPollingTransport;\n\n},{\"./lib/ajax-based\":24,\"./receiver/xhr\":32,\"./sender/xdr\":34,\"./xdr-streaming\":40,\"inherits\":57}],40:[function(require,module,exports){\n'use strict';\n\nvar inherits = require('inherits')\n  , AjaxBasedTransport = require('./lib/ajax-based')\n  , XhrReceiver = require('./receiver/xhr')\n  , XDRObject = require('./sender/xdr')\n  ;\n\n// According to:\n//   http://stackoverflow.com/questions/1641507/detect-browser-support-for-cross-domain-xmlhttprequests\n//   http://hacks.mozilla.org/2009/07/cross-site-xmlhttprequest-with-cors/\n\nfunction XdrStreamingTransport(transUrl) {\n  if (!XDRObject.enabled) {\n    throw new Error('Transport created when disabled');\n  }\n  AjaxBasedTransport.call(this, transUrl, '/xhr_streaming', XhrReceiver, XDRObject);\n}\n\ninherits(XdrStreamingTransport, AjaxBasedTransport);\n\nXdrStreamingTransport.enabled = function(info) {\n  if (info.cookie_needed || info.nullOrigin) {\n    return false;\n  }\n  return XDRObject.enabled && info.sameScheme;\n};\n\nXdrStreamingTransport.transportName = 'xdr-streaming';\nXdrStreamingTransport.roundTrips = 2; // preflight, ajax\n\nmodule.exports = XdrStreamingTransport;\n\n},{\"./lib/ajax-based\":24,\"./receiver/xhr\":32,\"./sender/xdr\":34,\"inherits\":57}],41:[function(require,module,exports){\n'use strict';\n\nvar inherits = require('inherits')\n  , AjaxBasedTransport = require('./lib/ajax-based')\n  , XhrReceiver = require('./receiver/xhr')\n  , XHRCorsObject = require('./sender/xhr-cors')\n  , XHRLocalObject = require('./sender/xhr-local')\n  ;\n\nfunction XhrPollingTransport(transUrl) {\n  if (!XHRLocalObject.enabled && !XHRCorsObject.enabled) {\n    throw new Error('Transport created when disabled');\n  }\n  AjaxBasedTransport.call(this, transUrl, '/xhr', XhrReceiver, XHRCorsObject);\n}\n\ninherits(XhrPollingTransport, AjaxBasedTransport);\n\nXhrPollingTransport.enabled = function(info) {\n  if (info.nullOrigin) {\n    return false;\n  }\n\n  if (XHRLocalObject.enabled && info.sameOrigin) {\n    return true;\n  }\n  return XHRCorsObject.enabled;\n};\n\nXhrPollingTransport.transportName = 'xhr-polling';\nXhrPollingTransport.roundTrips = 2; // preflight, ajax\n\nmodule.exports = XhrPollingTransport;\n\n},{\"./lib/ajax-based\":24,\"./receiver/xhr\":32,\"./sender/xhr-cors\":35,\"./sender/xhr-local\":37,\"inherits\":57}],42:[function(require,module,exports){\n(function (global){\n'use strict';\n\nvar inherits = require('inherits')\n  , AjaxBasedTransport = require('./lib/ajax-based')\n  , XhrReceiver = require('./receiver/xhr')\n  , XHRCorsObject = require('./sender/xhr-cors')\n  , XHRLocalObject = require('./sender/xhr-local')\n  , browser = require('../utils/browser')\n  ;\n\nfunction XhrStreamingTransport(transUrl) {\n  if (!XHRLocalObject.enabled && !XHRCorsObject.enabled) {\n    throw new Error('Transport created when disabled');\n  }\n  AjaxBasedTransport.call(this, transUrl, '/xhr_streaming', XhrReceiver, XHRCorsObject);\n}\n\ninherits(XhrStreamingTransport, AjaxBasedTransport);\n\nXhrStreamingTransport.enabled = function(info) {\n  if (info.nullOrigin) {\n    return false;\n  }\n  // Opera doesn't support xhr-streaming #60\n  // But it might be able to #92\n  if (browser.isOpera()) {\n    return false;\n  }\n\n  return XHRCorsObject.enabled;\n};\n\nXhrStreamingTransport.transportName = 'xhr-streaming';\nXhrStreamingTransport.roundTrips = 2; // preflight, ajax\n\n// Safari gets confused when a streaming ajax request is started\n// before onload. This causes the load indicator to spin indefinetely.\n// Only require body when used in a browser\nXhrStreamingTransport.needBody = !!global.document;\n\nmodule.exports = XhrStreamingTransport;\n\n}).call(this,typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n\n},{\"../utils/browser\":44,\"./lib/ajax-based\":24,\"./receiver/xhr\":32,\"./sender/xhr-cors\":35,\"./sender/xhr-local\":37,\"inherits\":57}],43:[function(require,module,exports){\n(function (global){\n'use strict';\n\nif (global.crypto && global.crypto.getRandomValues) {\n  module.exports.randomBytes = function(length) {\n    var bytes = new Uint8Array(length);\n    global.crypto.getRandomValues(bytes);\n    return bytes;\n  };\n} else {\n  module.exports.randomBytes = function(length) {\n    var bytes = new Array(length);\n    for (var i = 0; i < length; i++) {\n      bytes[i] = Math.floor(Math.random() * 256);\n    }\n    return bytes;\n  };\n}\n\n}).call(this,typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n\n},{}],44:[function(require,module,exports){\n(function (global){\n'use strict';\n\nmodule.exports = {\n  isOpera: function() {\n    return global.navigator &&\n      /opera/i.test(global.navigator.userAgent);\n  }\n\n, isKonqueror: function() {\n    return global.navigator &&\n      /konqueror/i.test(global.navigator.userAgent);\n  }\n\n  // #187 wrap document.domain in try/catch because of WP8 from file:///\n, hasDomain: function () {\n    // non-browser client always has a domain\n    if (!global.document) {\n      return true;\n    }\n\n    try {\n      return !!global.document.domain;\n    } catch (e) {\n      return false;\n    }\n  }\n};\n\n}).call(this,typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n\n},{}],45:[function(require,module,exports){\n'use strict';\n\nvar JSON3 = require('json3');\n\n// Some extra characters that Chrome gets wrong, and substitutes with\n// something else on the wire.\n// eslint-disable-next-line no-control-regex, no-misleading-character-class\nvar extraEscapable = /[\\x00-\\x1f\\ud800-\\udfff\\ufffe\\uffff\\u0300-\\u0333\\u033d-\\u0346\\u034a-\\u034c\\u0350-\\u0352\\u0357-\\u0358\\u035c-\\u0362\\u0374\\u037e\\u0387\\u0591-\\u05af\\u05c4\\u0610-\\u0617\\u0653-\\u0654\\u0657-\\u065b\\u065d-\\u065e\\u06df-\\u06e2\\u06eb-\\u06ec\\u0730\\u0732-\\u0733\\u0735-\\u0736\\u073a\\u073d\\u073f-\\u0741\\u0743\\u0745\\u0747\\u07eb-\\u07f1\\u0951\\u0958-\\u095f\\u09dc-\\u09dd\\u09df\\u0a33\\u0a36\\u0a59-\\u0a5b\\u0a5e\\u0b5c-\\u0b5d\\u0e38-\\u0e39\\u0f43\\u0f4d\\u0f52\\u0f57\\u0f5c\\u0f69\\u0f72-\\u0f76\\u0f78\\u0f80-\\u0f83\\u0f93\\u0f9d\\u0fa2\\u0fa7\\u0fac\\u0fb9\\u1939-\\u193a\\u1a17\\u1b6b\\u1cda-\\u1cdb\\u1dc0-\\u1dcf\\u1dfc\\u1dfe\\u1f71\\u1f73\\u1f75\\u1f77\\u1f79\\u1f7b\\u1f7d\\u1fbb\\u1fbe\\u1fc9\\u1fcb\\u1fd3\\u1fdb\\u1fe3\\u1feb\\u1fee-\\u1fef\\u1ff9\\u1ffb\\u1ffd\\u2000-\\u2001\\u20d0-\\u20d1\\u20d4-\\u20d7\\u20e7-\\u20e9\\u2126\\u212a-\\u212b\\u2329-\\u232a\\u2adc\\u302b-\\u302c\\uaab2-\\uaab3\\uf900-\\ufa0d\\ufa10\\ufa12\\ufa15-\\ufa1e\\ufa20\\ufa22\\ufa25-\\ufa26\\ufa2a-\\ufa2d\\ufa30-\\ufa6d\\ufa70-\\ufad9\\ufb1d\\ufb1f\\ufb2a-\\ufb36\\ufb38-\\ufb3c\\ufb3e\\ufb40-\\ufb41\\ufb43-\\ufb44\\ufb46-\\ufb4e\\ufff0-\\uffff]/g\n  , extraLookup;\n\n// This may be quite slow, so let's delay until user actually uses bad\n// characters.\nvar unrollLookup = function(escapable) {\n  var i;\n  var unrolled = {};\n  var c = [];\n  for (i = 0; i < 65536; i++) {\n    c.push( String.fromCharCode(i) );\n  }\n  escapable.lastIndex = 0;\n  c.join('').replace(escapable, function(a) {\n    unrolled[ a ] = '\\\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);\n    return '';\n  });\n  escapable.lastIndex = 0;\n  return unrolled;\n};\n\n// Quote string, also taking care of unicode characters that browsers\n// often break. Especially, take care of unicode surrogates:\n// http://en.wikipedia.org/wiki/Mapping_of_Unicode_characters#Surrogates\nmodule.exports = {\n  quote: function(string) {\n    var quoted = JSON3.stringify(string);\n\n    // In most cases this should be very fast and good enough.\n    extraEscapable.lastIndex = 0;\n    if (!extraEscapable.test(quoted)) {\n      return quoted;\n    }\n\n    if (!extraLookup) {\n      extraLookup = unrollLookup(extraEscapable);\n    }\n\n    return quoted.replace(extraEscapable, function(a) {\n      return extraLookup[a];\n    });\n  }\n};\n\n},{\"json3\":58}],46:[function(require,module,exports){\n(function (global){\n'use strict';\n\nvar random = require('./random');\n\nvar onUnload = {}\n  , afterUnload = false\n    // detect google chrome packaged apps because they don't allow the 'unload' event\n  , isChromePackagedApp = global.chrome && global.chrome.app && global.chrome.app.runtime\n  ;\n\nmodule.exports = {\n  attachEvent: function(event, listener) {\n    if (typeof global.addEventListener !== 'undefined') {\n      global.addEventListener(event, listener, false);\n    } else if (global.document && global.attachEvent) {\n      // IE quirks.\n      // According to: http://stevesouders.com/misc/test-postmessage.php\n      // the message gets delivered only to 'document', not 'window'.\n      global.document.attachEvent('on' + event, listener);\n      // I get 'window' for ie8.\n      global.attachEvent('on' + event, listener);\n    }\n  }\n\n, detachEvent: function(event, listener) {\n    if (typeof global.addEventListener !== 'undefined') {\n      global.removeEventListener(event, listener, false);\n    } else if (global.document && global.detachEvent) {\n      global.document.detachEvent('on' + event, listener);\n      global.detachEvent('on' + event, listener);\n    }\n  }\n\n, unloadAdd: function(listener) {\n    if (isChromePackagedApp) {\n      return null;\n    }\n\n    var ref = random.string(8);\n    onUnload[ref] = listener;\n    if (afterUnload) {\n      setTimeout(this.triggerUnloadCallbacks, 0);\n    }\n    return ref;\n  }\n\n, unloadDel: function(ref) {\n    if (ref in onUnload) {\n      delete onUnload[ref];\n    }\n  }\n\n, triggerUnloadCallbacks: function() {\n    for (var ref in onUnload) {\n      onUnload[ref]();\n      delete onUnload[ref];\n    }\n  }\n};\n\nvar unloadTriggered = function() {\n  if (afterUnload) {\n    return;\n  }\n  afterUnload = true;\n  module.exports.triggerUnloadCallbacks();\n};\n\n// 'unload' alone is not reliable in opera within an iframe, but we\n// can't use `beforeunload` as IE fires it on javascript: links.\nif (!isChromePackagedApp) {\n  module.exports.attachEvent('unload', unloadTriggered);\n}\n\n}).call(this,typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n\n},{\"./random\":50}],47:[function(require,module,exports){\n(function (process,global){\n'use strict';\n\nvar eventUtils = require('./event')\n  , JSON3 = require('json3')\n  , browser = require('./browser')\n  ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n  debug = require('debug')('sockjs-client:utils:iframe');\n}\n\nmodule.exports = {\n  WPrefix: '_jp'\n, currentWindowId: null\n\n, polluteGlobalNamespace: function() {\n    if (!(module.exports.WPrefix in global)) {\n      global[module.exports.WPrefix] = {};\n    }\n  }\n\n, postMessage: function(type, data) {\n    if (global.parent !== global) {\n      global.parent.postMessage(JSON3.stringify({\n        windowId: module.exports.currentWindowId\n      , type: type\n      , data: data || ''\n      }), '*');\n    } else {\n      debug('Cannot postMessage, no parent window.', type, data);\n    }\n  }\n\n, createIframe: function(iframeUrl, errorCallback) {\n    var iframe = global.document.createElement('iframe');\n    var tref, unloadRef;\n    var unattach = function() {\n      debug('unattach');\n      clearTimeout(tref);\n      // Explorer had problems with that.\n      try {\n        iframe.onload = null;\n      } catch (x) {\n        // intentionally empty\n      }\n      iframe.onerror = null;\n    };\n    var cleanup = function() {\n      debug('cleanup');\n      if (iframe) {\n        unattach();\n        // This timeout makes chrome fire onbeforeunload event\n        // within iframe. Without the timeout it goes straight to\n        // onunload.\n        setTimeout(function() {\n          if (iframe) {\n            iframe.parentNode.removeChild(iframe);\n          }\n          iframe = null;\n        }, 0);\n        eventUtils.unloadDel(unloadRef);\n      }\n    };\n    var onerror = function(err) {\n      debug('onerror', err);\n      if (iframe) {\n        cleanup();\n        errorCallback(err);\n      }\n    };\n    var post = function(msg, origin) {\n      debug('post', msg, origin);\n      setTimeout(function() {\n        try {\n          // When the iframe is not loaded, IE raises an exception\n          // on 'contentWindow'.\n          if (iframe && iframe.contentWindow) {\n            iframe.contentWindow.postMessage(msg, origin);\n          }\n        } catch (x) {\n          // intentionally empty\n        }\n      }, 0);\n    };\n\n    iframe.src = iframeUrl;\n    iframe.style.display = 'none';\n    iframe.style.position = 'absolute';\n    iframe.onerror = function() {\n      onerror('onerror');\n    };\n    iframe.onload = function() {\n      debug('onload');\n      // `onload` is triggered before scripts on the iframe are\n      // executed. Give it few seconds to actually load stuff.\n      clearTimeout(tref);\n      tref = setTimeout(function() {\n        onerror('onload timeout');\n      }, 2000);\n    };\n    global.document.body.appendChild(iframe);\n    tref = setTimeout(function() {\n      onerror('timeout');\n    }, 15000);\n    unloadRef = eventUtils.unloadAdd(cleanup);\n    return {\n      post: post\n    , cleanup: cleanup\n    , loaded: unattach\n    };\n  }\n\n/* eslint no-undef: \"off\", new-cap: \"off\" */\n, createHtmlfile: function(iframeUrl, errorCallback) {\n    var axo = ['Active'].concat('Object').join('X');\n    var doc = new global[axo]('htmlfile');\n    var tref, unloadRef;\n    var iframe;\n    var unattach = function() {\n      clearTimeout(tref);\n      iframe.onerror = null;\n    };\n    var cleanup = function() {\n      if (doc) {\n        unattach();\n        eventUtils.unloadDel(unloadRef);\n        iframe.parentNode.removeChild(iframe);\n        iframe = doc = null;\n        CollectGarbage();\n      }\n    };\n    var onerror = function(r) {\n      debug('onerror', r);\n      if (doc) {\n        cleanup();\n        errorCallback(r);\n      }\n    };\n    var post = function(msg, origin) {\n      try {\n        // When the iframe is not loaded, IE raises an exception\n        // on 'contentWindow'.\n        setTimeout(function() {\n          if (iframe && iframe.contentWindow) {\n              iframe.contentWindow.postMessage(msg, origin);\n          }\n        }, 0);\n      } catch (x) {\n        // intentionally empty\n      }\n    };\n\n    doc.open();\n    doc.write('<html><s' + 'cript>' +\n              'document.domain=\"' + global.document.domain + '\";' +\n              '</s' + 'cript></html>');\n    doc.close();\n    doc.parentWindow[module.exports.WPrefix] = global[module.exports.WPrefix];\n    var c = doc.createElement('div');\n    doc.body.appendChild(c);\n    iframe = doc.createElement('iframe');\n    c.appendChild(iframe);\n    iframe.src = iframeUrl;\n    iframe.onerror = function() {\n      onerror('onerror');\n    };\n    tref = setTimeout(function() {\n      onerror('timeout');\n    }, 15000);\n    unloadRef = eventUtils.unloadAdd(cleanup);\n    return {\n      post: post\n    , cleanup: cleanup\n    , loaded: unattach\n    };\n  }\n};\n\nmodule.exports.iframeEnabled = false;\nif (global.document) {\n  // postMessage misbehaves in konqueror 4.6.5 - the messages are delivered with\n  // huge delay, or not at all.\n  module.exports.iframeEnabled = (typeof global.postMessage === 'function' ||\n    typeof global.postMessage === 'object') && (!browser.isKonqueror());\n}\n\n}).call(this,{ env: {} },typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n\n},{\"./browser\":44,\"./event\":46,\"debug\":55,\"json3\":58}],48:[function(require,module,exports){\n(function (global){\n'use strict';\n\nvar logObject = {};\n['log', 'debug', 'warn'].forEach(function (level) {\n  var levelExists;\n\n  try {\n    levelExists = global.console && global.console[level] && global.console[level].apply;\n  } catch(e) {\n    // do nothing\n  }\n\n  logObject[level] = levelExists ? function () {\n    return global.console[level].apply(global.console, arguments);\n  } : (level === 'log' ? function () {} : logObject.log);\n});\n\nmodule.exports = logObject;\n\n}).call(this,typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n\n},{}],49:[function(require,module,exports){\n'use strict';\n\nmodule.exports = {\n  isObject: function(obj) {\n    var type = typeof obj;\n    return type === 'function' || type === 'object' && !!obj;\n  }\n\n, extend: function(obj) {\n    if (!this.isObject(obj)) {\n      return obj;\n    }\n    var source, prop;\n    for (var i = 1, length = arguments.length; i < length; i++) {\n      source = arguments[i];\n      for (prop in source) {\n        if (Object.prototype.hasOwnProperty.call(source, prop)) {\n          obj[prop] = source[prop];\n        }\n      }\n    }\n    return obj;\n  }\n};\n\n},{}],50:[function(require,module,exports){\n'use strict';\n\nvar crypto = require('crypto');\n\n// This string has length 32, a power of 2, so the modulus doesn't introduce a\n// bias.\nvar _randomStringChars = 'abcdefghijklmnopqrstuvwxyz012345';\nmodule.exports = {\n  string: function(length) {\n    var max = _randomStringChars.length;\n    var bytes = crypto.randomBytes(length);\n    var ret = [];\n    for (var i = 0; i < length; i++) {\n      ret.push(_randomStringChars.substr(bytes[i] % max, 1));\n    }\n    return ret.join('');\n  }\n\n, number: function(max) {\n    return Math.floor(Math.random() * max);\n  }\n\n, numberString: function(max) {\n    var t = ('' + (max - 1)).length;\n    var p = new Array(t + 1).join('0');\n    return (p + this.number(max)).slice(-t);\n  }\n};\n\n},{\"crypto\":43}],51:[function(require,module,exports){\n(function (process){\n'use strict';\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n  debug = require('debug')('sockjs-client:utils:transport');\n}\n\nmodule.exports = function(availableTransports) {\n  return {\n    filterToEnabled: function(transportsWhitelist, info) {\n      var transports = {\n        main: []\n      , facade: []\n      };\n      if (!transportsWhitelist) {\n        transportsWhitelist = [];\n      } else if (typeof transportsWhitelist === 'string') {\n        transportsWhitelist = [transportsWhitelist];\n      }\n\n      availableTransports.forEach(function(trans) {\n        if (!trans) {\n          return;\n        }\n\n        if (trans.transportName === 'websocket' && info.websocket === false) {\n          debug('disabled from server', 'websocket');\n          return;\n        }\n\n        if (transportsWhitelist.length &&\n            transportsWhitelist.indexOf(trans.transportName) === -1) {\n          debug('not in whitelist', trans.transportName);\n          return;\n        }\n\n        if (trans.enabled(info)) {\n          debug('enabled', trans.transportName);\n          transports.main.push(trans);\n          if (trans.facadeTransport) {\n            transports.facade.push(trans.facadeTransport);\n          }\n        } else {\n          debug('disabled', trans.transportName);\n        }\n      });\n      return transports;\n    }\n  };\n};\n\n}).call(this,{ env: {} })\n\n},{\"debug\":55}],52:[function(require,module,exports){\n(function (process){\n'use strict';\n\nvar URL = require('url-parse');\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n  debug = require('debug')('sockjs-client:utils:url');\n}\n\nmodule.exports = {\n  getOrigin: function(url) {\n    if (!url) {\n      return null;\n    }\n\n    var p = new URL(url);\n    if (p.protocol === 'file:') {\n      return null;\n    }\n\n    var port = p.port;\n    if (!port) {\n      port = (p.protocol === 'https:') ? '443' : '80';\n    }\n\n    return p.protocol + '//' + p.hostname + ':' + port;\n  }\n\n, isOriginEqual: function(a, b) {\n    var res = this.getOrigin(a) === this.getOrigin(b);\n    debug('same', a, b, res);\n    return res;\n  }\n\n, isSchemeEqual: function(a, b) {\n    return (a.split(':')[0] === b.split(':')[0]);\n  }\n\n, addPath: function (url, path) {\n    var qs = url.split('?');\n    return qs[0] + path + (qs[1] ? '?' + qs[1] : '');\n  }\n\n, addQuery: function (url, q) {\n    return url + (url.indexOf('?') === -1 ? ('?' + q) : ('&' + q));\n  }\n\n, isLoopbackAddr: function (addr) {\n    return /^127\\.([0-9]{1,3})\\.([0-9]{1,3})\\.([0-9]{1,3})$/i.test(addr) || /^\\[::1\\]$/.test(addr);\n  }\n};\n\n}).call(this,{ env: {} })\n\n},{\"debug\":55,\"url-parse\":61}],53:[function(require,module,exports){\nmodule.exports = '1.5.0';\n\n},{}],54:[function(require,module,exports){\n/**\n * Helpers.\n */\n\nvar s = 1000;\nvar m = s * 60;\nvar h = m * 60;\nvar d = h * 24;\nvar w = d * 7;\nvar y = d * 365.25;\n\n/**\n * Parse or format the given `val`.\n *\n * Options:\n *\n *  - `long` verbose formatting [false]\n *\n * @param {String|Number} val\n * @param {Object} [options]\n * @throws {Error} throw an error if val is not a non-empty string or a number\n * @return {String|Number}\n * @api public\n */\n\nmodule.exports = function(val, options) {\n  options = options || {};\n  var type = typeof val;\n  if (type === 'string' && val.length > 0) {\n    return parse(val);\n  } else if (type === 'number' && isFinite(val)) {\n    return options.long ? fmtLong(val) : fmtShort(val);\n  }\n  throw new Error(\n    'val is not a non-empty string or a valid number. val=' +\n      JSON.stringify(val)\n  );\n};\n\n/**\n * Parse the given `str` and return milliseconds.\n *\n * @param {String} str\n * @return {Number}\n * @api private\n */\n\nfunction parse(str) {\n  str = String(str);\n  if (str.length > 100) {\n    return;\n  }\n  var match = /^(-?(?:\\d+)?\\.?\\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|weeks?|w|years?|yrs?|y)?$/i.exec(\n    str\n  );\n  if (!match) {\n    return;\n  }\n  var n = parseFloat(match[1]);\n  var type = (match[2] || 'ms').toLowerCase();\n  switch (type) {\n    case 'years':\n    case 'year':\n    case 'yrs':\n    case 'yr':\n    case 'y':\n      return n * y;\n    case 'weeks':\n    case 'week':\n    case 'w':\n      return n * w;\n    case 'days':\n    case 'day':\n    case 'd':\n      return n * d;\n    case 'hours':\n    case 'hour':\n    case 'hrs':\n    case 'hr':\n    case 'h':\n      return n * h;\n    case 'minutes':\n    case 'minute':\n    case 'mins':\n    case 'min':\n    case 'm':\n      return n * m;\n    case 'seconds':\n    case 'second':\n    case 'secs':\n    case 'sec':\n    case 's':\n      return n * s;\n    case 'milliseconds':\n    case 'millisecond':\n    case 'msecs':\n    case 'msec':\n    case 'ms':\n      return n;\n    default:\n      return undefined;\n  }\n}\n\n/**\n * Short format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction fmtShort(ms) {\n  var msAbs = Math.abs(ms);\n  if (msAbs >= d) {\n    return Math.round(ms / d) + 'd';\n  }\n  if (msAbs >= h) {\n    return Math.round(ms / h) + 'h';\n  }\n  if (msAbs >= m) {\n    return Math.round(ms / m) + 'm';\n  }\n  if (msAbs >= s) {\n    return Math.round(ms / s) + 's';\n  }\n  return ms + 'ms';\n}\n\n/**\n * Long format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction fmtLong(ms) {\n  var msAbs = Math.abs(ms);\n  if (msAbs >= d) {\n    return plural(ms, msAbs, d, 'day');\n  }\n  if (msAbs >= h) {\n    return plural(ms, msAbs, h, 'hour');\n  }\n  if (msAbs >= m) {\n    return plural(ms, msAbs, m, 'minute');\n  }\n  if (msAbs >= s) {\n    return plural(ms, msAbs, s, 'second');\n  }\n  return ms + ' ms';\n}\n\n/**\n * Pluralization helper.\n */\n\nfunction plural(ms, msAbs, n, name) {\n  var isPlural = msAbs >= n * 1.5;\n  return Math.round(ms / n) + ' ' + name + (isPlural ? 's' : '');\n}\n\n},{}],55:[function(require,module,exports){\n(function (process){\n\"use strict\";\n\nfunction _typeof(obj) { if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\n/* eslint-env browser */\n\n/**\n * This is the web browser implementation of `debug()`.\n */\nexports.log = log;\nexports.formatArgs = formatArgs;\nexports.save = save;\nexports.load = load;\nexports.useColors = useColors;\nexports.storage = localstorage();\n/**\n * Colors.\n */\n\nexports.colors = ['#0000CC', '#0000FF', '#0033CC', '#0033FF', '#0066CC', '#0066FF', '#0099CC', '#0099FF', '#00CC00', '#00CC33', '#00CC66', '#00CC99', '#00CCCC', '#00CCFF', '#3300CC', '#3300FF', '#3333CC', '#3333FF', '#3366CC', '#3366FF', '#3399CC', '#3399FF', '#33CC00', '#33CC33', '#33CC66', '#33CC99', '#33CCCC', '#33CCFF', '#6600CC', '#6600FF', '#6633CC', '#6633FF', '#66CC00', '#66CC33', '#9900CC', '#9900FF', '#9933CC', '#9933FF', '#99CC00', '#99CC33', '#CC0000', '#CC0033', '#CC0066', '#CC0099', '#CC00CC', '#CC00FF', '#CC3300', '#CC3333', '#CC3366', '#CC3399', '#CC33CC', '#CC33FF', '#CC6600', '#CC6633', '#CC9900', '#CC9933', '#CCCC00', '#CCCC33', '#FF0000', '#FF0033', '#FF0066', '#FF0099', '#FF00CC', '#FF00FF', '#FF3300', '#FF3333', '#FF3366', '#FF3399', '#FF33CC', '#FF33FF', '#FF6600', '#FF6633', '#FF9900', '#FF9933', '#FFCC00', '#FFCC33'];\n/**\n * Currently only WebKit-based Web Inspectors, Firefox >= v31,\n * and the Firebug extension (any Firefox version) are known\n * to support \"%c\" CSS customizations.\n *\n * TODO: add a `localStorage` variable to explicitly enable/disable colors\n */\n// eslint-disable-next-line complexity\n\nfunction useColors() {\n  // NB: In an Electron preload script, document will be defined but not fully\n  // initialized. Since we know we're in Chrome, we'll just detect this case\n  // explicitly\n  if (typeof window !== 'undefined' && window.process && (window.process.type === 'renderer' || window.process.__nwjs)) {\n    return true;\n  } // Internet Explorer and Edge do not support colors.\n\n\n  if (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\\/(\\d+)/)) {\n    return false;\n  } // Is webkit? http://stackoverflow.com/a/16459606/376773\n  // document is undefined in react-native: https://github.com/facebook/react-native/pull/1632\n\n\n  return typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance || // Is firebug? http://stackoverflow.com/a/398120/376773\n  typeof window !== 'undefined' && window.console && (window.console.firebug || window.console.exception && window.console.table) || // Is firefox >= v31?\n  // https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages\n  typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\\/(\\d+)/) && parseInt(RegExp.$1, 10) >= 31 || // Double check webkit in userAgent just in case we are in a worker\n  typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\\/(\\d+)/);\n}\n/**\n * Colorize log arguments if enabled.\n *\n * @api public\n */\n\n\nfunction formatArgs(args) {\n  args[0] = (this.useColors ? '%c' : '') + this.namespace + (this.useColors ? ' %c' : ' ') + args[0] + (this.useColors ? '%c ' : ' ') + '+' + module.exports.humanize(this.diff);\n\n  if (!this.useColors) {\n    return;\n  }\n\n  var c = 'color: ' + this.color;\n  args.splice(1, 0, c, 'color: inherit'); // The final \"%c\" is somewhat tricky, because there could be other\n  // arguments passed either before or after the %c, so we need to\n  // figure out the correct index to insert the CSS into\n\n  var index = 0;\n  var lastC = 0;\n  args[0].replace(/%[a-zA-Z%]/g, function (match) {\n    if (match === '%%') {\n      return;\n    }\n\n    index++;\n\n    if (match === '%c') {\n      // We only are interested in the *last* %c\n      // (the user may have provided their own)\n      lastC = index;\n    }\n  });\n  args.splice(lastC, 0, c);\n}\n/**\n * Invokes `console.log()` when available.\n * No-op when `console.log` is not a \"function\".\n *\n * @api public\n */\n\n\nfunction log() {\n  var _console;\n\n  // This hackery is required for IE8/9, where\n  // the `console.log` function doesn't have 'apply'\n  return (typeof console === \"undefined\" ? \"undefined\" : _typeof(console)) === 'object' && console.log && (_console = console).log.apply(_console, arguments);\n}\n/**\n * Save `namespaces`.\n *\n * @param {String} namespaces\n * @api private\n */\n\n\nfunction save(namespaces) {\n  try {\n    if (namespaces) {\n      exports.storage.setItem('debug', namespaces);\n    } else {\n      exports.storage.removeItem('debug');\n    }\n  } catch (error) {// Swallow\n    // XXX (@Qix-) should we be logging these?\n  }\n}\n/**\n * Load `namespaces`.\n *\n * @return {String} returns the previously persisted debug modes\n * @api private\n */\n\n\nfunction load() {\n  var r;\n\n  try {\n    r = exports.storage.getItem('debug');\n  } catch (error) {} // Swallow\n  // XXX (@Qix-) should we be logging these?\n  // If debug isn't set in LS, and we're in Electron, try to load $DEBUG\n\n\n  if (!r && typeof process !== 'undefined' && 'env' in process) {\n    r = process.env.DEBUG;\n  }\n\n  return r;\n}\n/**\n * Localstorage attempts to return the localstorage.\n *\n * This is necessary because safari throws\n * when a user disables cookies/localstorage\n * and you attempt to access it.\n *\n * @return {LocalStorage}\n * @api private\n */\n\n\nfunction localstorage() {\n  try {\n    // TVMLKit (Apple TV JS Runtime) does not have a window object, just localStorage in the global context\n    // The Browser also has localStorage in the global context.\n    return localStorage;\n  } catch (error) {// Swallow\n    // XXX (@Qix-) should we be logging these?\n  }\n}\n\nmodule.exports = require('./common')(exports);\nvar formatters = module.exports.formatters;\n/**\n * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.\n */\n\nformatters.j = function (v) {\n  try {\n    return JSON.stringify(v);\n  } catch (error) {\n    return '[UnexpectedJSONParseError]: ' + error.message;\n  }\n};\n\n\n}).call(this,{ env: {} })\n\n},{\"./common\":56}],56:[function(require,module,exports){\n\"use strict\";\n\n/**\n * This is the common logic for both the Node.js and web browser\n * implementations of `debug()`.\n */\nfunction setup(env) {\n  createDebug.debug = createDebug;\n  createDebug.default = createDebug;\n  createDebug.coerce = coerce;\n  createDebug.disable = disable;\n  createDebug.enable = enable;\n  createDebug.enabled = enabled;\n  createDebug.humanize = require('ms');\n  Object.keys(env).forEach(function (key) {\n    createDebug[key] = env[key];\n  });\n  /**\n  * Active `debug` instances.\n  */\n\n  createDebug.instances = [];\n  /**\n  * The currently active debug mode names, and names to skip.\n  */\n\n  createDebug.names = [];\n  createDebug.skips = [];\n  /**\n  * Map of special \"%n\" handling functions, for the debug \"format\" argument.\n  *\n  * Valid key names are a single, lower or upper-case letter, i.e. \"n\" and \"N\".\n  */\n\n  createDebug.formatters = {};\n  /**\n  * Selects a color for a debug namespace\n  * @param {String} namespace The namespace string for the for the debug instance to be colored\n  * @return {Number|String} An ANSI color code for the given namespace\n  * @api private\n  */\n\n  function selectColor(namespace) {\n    var hash = 0;\n\n    for (var i = 0; i < namespace.length; i++) {\n      hash = (hash << 5) - hash + namespace.charCodeAt(i);\n      hash |= 0; // Convert to 32bit integer\n    }\n\n    return createDebug.colors[Math.abs(hash) % createDebug.colors.length];\n  }\n\n  createDebug.selectColor = selectColor;\n  /**\n  * Create a debugger with the given `namespace`.\n  *\n  * @param {String} namespace\n  * @return {Function}\n  * @api public\n  */\n\n  function createDebug(namespace) {\n    var prevTime;\n\n    function debug() {\n      // Disabled?\n      if (!debug.enabled) {\n        return;\n      }\n\n      for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n        args[_key] = arguments[_key];\n      }\n\n      var self = debug; // Set `diff` timestamp\n\n      var curr = Number(new Date());\n      var ms = curr - (prevTime || curr);\n      self.diff = ms;\n      self.prev = prevTime;\n      self.curr = curr;\n      prevTime = curr;\n      args[0] = createDebug.coerce(args[0]);\n\n      if (typeof args[0] !== 'string') {\n        // Anything else let's inspect with %O\n        args.unshift('%O');\n      } // Apply any `formatters` transformations\n\n\n      var index = 0;\n      args[0] = args[0].replace(/%([a-zA-Z%])/g, function (match, format) {\n        // If we encounter an escaped % then don't increase the array index\n        if (match === '%%') {\n          return match;\n        }\n\n        index++;\n        var formatter = createDebug.formatters[format];\n\n        if (typeof formatter === 'function') {\n          var val = args[index];\n          match = formatter.call(self, val); // Now we need to remove `args[index]` since it's inlined in the `format`\n\n          args.splice(index, 1);\n          index--;\n        }\n\n        return match;\n      }); // Apply env-specific formatting (colors, etc.)\n\n      createDebug.formatArgs.call(self, args);\n      var logFn = self.log || createDebug.log;\n      logFn.apply(self, args);\n    }\n\n    debug.namespace = namespace;\n    debug.enabled = createDebug.enabled(namespace);\n    debug.useColors = createDebug.useColors();\n    debug.color = selectColor(namespace);\n    debug.destroy = destroy;\n    debug.extend = extend; // Debug.formatArgs = formatArgs;\n    // debug.rawLog = rawLog;\n    // env-specific initialization logic for debug instances\n\n    if (typeof createDebug.init === 'function') {\n      createDebug.init(debug);\n    }\n\n    createDebug.instances.push(debug);\n    return debug;\n  }\n\n  function destroy() {\n    var index = createDebug.instances.indexOf(this);\n\n    if (index !== -1) {\n      createDebug.instances.splice(index, 1);\n      return true;\n    }\n\n    return false;\n  }\n\n  function extend(namespace, delimiter) {\n    return createDebug(this.namespace + (typeof delimiter === 'undefined' ? ':' : delimiter) + namespace);\n  }\n  /**\n  * Enables a debug mode by namespaces. This can include modes\n  * separated by a colon and wildcards.\n  *\n  * @param {String} namespaces\n  * @api public\n  */\n\n\n  function enable(namespaces) {\n    createDebug.save(namespaces);\n    createDebug.names = [];\n    createDebug.skips = [];\n    var i;\n    var split = (typeof namespaces === 'string' ? namespaces : '').split(/[\\s,]+/);\n    var len = split.length;\n\n    for (i = 0; i < len; i++) {\n      if (!split[i]) {\n        // ignore empty strings\n        continue;\n      }\n\n      namespaces = split[i].replace(/\\*/g, '.*?');\n\n      if (namespaces[0] === '-') {\n        createDebug.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));\n      } else {\n        createDebug.names.push(new RegExp('^' + namespaces + '$'));\n      }\n    }\n\n    for (i = 0; i < createDebug.instances.length; i++) {\n      var instance = createDebug.instances[i];\n      instance.enabled = createDebug.enabled(instance.namespace);\n    }\n  }\n  /**\n  * Disable debug output.\n  *\n  * @api public\n  */\n\n\n  function disable() {\n    createDebug.enable('');\n  }\n  /**\n  * Returns true if the given mode name is enabled, false otherwise.\n  *\n  * @param {String} name\n  * @return {Boolean}\n  * @api public\n  */\n\n\n  function enabled(name) {\n    if (name[name.length - 1] === '*') {\n      return true;\n    }\n\n    var i;\n    var len;\n\n    for (i = 0, len = createDebug.skips.length; i < len; i++) {\n      if (createDebug.skips[i].test(name)) {\n        return false;\n      }\n    }\n\n    for (i = 0, len = createDebug.names.length; i < len; i++) {\n      if (createDebug.names[i].test(name)) {\n        return true;\n      }\n    }\n\n    return false;\n  }\n  /**\n  * Coerce `val`.\n  *\n  * @param {Mixed} val\n  * @return {Mixed}\n  * @api private\n  */\n\n\n  function coerce(val) {\n    if (val instanceof Error) {\n      return val.stack || val.message;\n    }\n\n    return val;\n  }\n\n  createDebug.enable(createDebug.load());\n  return createDebug;\n}\n\nmodule.exports = setup;\n\n\n},{\"ms\":54}],57:[function(require,module,exports){\nif (typeof Object.create === 'function') {\n  // implementation from standard node.js 'util' module\n  module.exports = function inherits(ctor, superCtor) {\n    if (superCtor) {\n      ctor.super_ = superCtor\n      ctor.prototype = Object.create(superCtor.prototype, {\n        constructor: {\n          value: ctor,\n          enumerable: false,\n          writable: true,\n          configurable: true\n        }\n      })\n    }\n  };\n} else {\n  // old school shim for old browsers\n  module.exports = function inherits(ctor, superCtor) {\n    if (superCtor) {\n      ctor.super_ = superCtor\n      var TempCtor = function () {}\n      TempCtor.prototype = superCtor.prototype\n      ctor.prototype = new TempCtor()\n      ctor.prototype.constructor = ctor\n    }\n  }\n}\n\n},{}],58:[function(require,module,exports){\n(function (global){\n/*! JSON v3.3.2 | https://bestiejs.github.io/json3 | Copyright 2012-2015, Kit Cambridge, Benjamin Tan | http://kit.mit-license.org */\n;(function () {\n  // Detect the `define` function exposed by asynchronous module loaders. The\n  // strict `define` check is necessary for compatibility with `r.js`.\n  var isLoader = typeof define === \"function\" && define.amd;\n\n  // A set of types used to distinguish objects from primitives.\n  var objectTypes = {\n    \"function\": true,\n    \"object\": true\n  };\n\n  // Detect the `exports` object exposed by CommonJS implementations.\n  var freeExports = objectTypes[typeof exports] && exports && !exports.nodeType && exports;\n\n  // Use the `global` object exposed by Node (including Browserify via\n  // `insert-module-globals`), Narwhal, and Ringo as the default context,\n  // and the `window` object in browsers. Rhino exports a `global` function\n  // instead.\n  var root = objectTypes[typeof window] && window || this,\n      freeGlobal = freeExports && objectTypes[typeof module] && module && !module.nodeType && typeof global == \"object\" && global;\n\n  if (freeGlobal && (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal || freeGlobal.self === freeGlobal)) {\n    root = freeGlobal;\n  }\n\n  // Public: Initializes JSON 3 using the given `context` object, attaching the\n  // `stringify` and `parse` functions to the specified `exports` object.\n  function runInContext(context, exports) {\n    context || (context = root.Object());\n    exports || (exports = root.Object());\n\n    // Native constructor aliases.\n    var Number = context.Number || root.Number,\n        String = context.String || root.String,\n        Object = context.Object || root.Object,\n        Date = context.Date || root.Date,\n        SyntaxError = context.SyntaxError || root.SyntaxError,\n        TypeError = context.TypeError || root.TypeError,\n        Math = context.Math || root.Math,\n        nativeJSON = context.JSON || root.JSON;\n\n    // Delegate to the native `stringify` and `parse` implementations.\n    if (typeof nativeJSON == \"object\" && nativeJSON) {\n      exports.stringify = nativeJSON.stringify;\n      exports.parse = nativeJSON.parse;\n    }\n\n    // Convenience aliases.\n    var objectProto = Object.prototype,\n        getClass = objectProto.toString,\n        isProperty = objectProto.hasOwnProperty,\n        undefined;\n\n    // Internal: Contains `try...catch` logic used by other functions.\n    // This prevents other functions from being deoptimized.\n    function attempt(func, errorFunc) {\n      try {\n        func();\n      } catch (exception) {\n        if (errorFunc) {\n          errorFunc();\n        }\n      }\n    }\n\n    // Test the `Date#getUTC*` methods. Based on work by @Yaffle.\n    var isExtended = new Date(-3509827334573292);\n    attempt(function () {\n      // The `getUTCFullYear`, `Month`, and `Date` methods return nonsensical\n      // results for certain dates in Opera >= 10.53.\n      isExtended = isExtended.getUTCFullYear() == -109252 && isExtended.getUTCMonth() === 0 && isExtended.getUTCDate() === 1 &&\n        isExtended.getUTCHours() == 10 && isExtended.getUTCMinutes() == 37 && isExtended.getUTCSeconds() == 6 && isExtended.getUTCMilliseconds() == 708;\n    });\n\n    // Internal: Determines whether the native `JSON.stringify` and `parse`\n    // implementations are spec-compliant. Based on work by Ken Snyder.\n    function has(name) {\n      if (has[name] != null) {\n        // Return cached feature test result.\n        return has[name];\n      }\n      var isSupported;\n      if (name == \"bug-string-char-index\") {\n        // IE <= 7 doesn't support accessing string characters using square\n        // bracket notation. IE 8 only supports this for primitives.\n        isSupported = \"a\"[0] != \"a\";\n      } else if (name == \"json\") {\n        // Indicates whether both `JSON.stringify` and `JSON.parse` are\n        // supported.\n        isSupported = has(\"json-stringify\") && has(\"date-serialization\") && has(\"json-parse\");\n      } else if (name == \"date-serialization\") {\n        // Indicates whether `Date`s can be serialized accurately by `JSON.stringify`.\n        isSupported = has(\"json-stringify\") && isExtended;\n        if (isSupported) {\n          var stringify = exports.stringify;\n          attempt(function () {\n            isSupported =\n              // JSON 2, Prototype <= 1.7, and older WebKit builds incorrectly\n              // serialize extended years.\n              stringify(new Date(-8.64e15)) == '\"-271821-04-20T00:00:00.000Z\"' &&\n              // The milliseconds are optional in ES 5, but required in 5.1.\n              stringify(new Date(8.64e15)) == '\"+275760-09-13T00:00:00.000Z\"' &&\n              // Firefox <= 11.0 incorrectly serializes years prior to 0 as negative\n              // four-digit years instead of six-digit years. Credits: @Yaffle.\n              stringify(new Date(-621987552e5)) == '\"-000001-01-01T00:00:00.000Z\"' &&\n              // Safari <= 5.1.5 and Opera >= 10.53 incorrectly serialize millisecond\n              // values less than 1000. Credits: @Yaffle.\n              stringify(new Date(-1)) == '\"1969-12-31T23:59:59.999Z\"';\n          });\n        }\n      } else {\n        var value, serialized = '{\"a\":[1,true,false,null,\"\\\\u0000\\\\b\\\\n\\\\f\\\\r\\\\t\"]}';\n        // Test `JSON.stringify`.\n        if (name == \"json-stringify\") {\n          var stringify = exports.stringify, stringifySupported = typeof stringify == \"function\";\n          if (stringifySupported) {\n            // A test function object with a custom `toJSON` method.\n            (value = function () {\n              return 1;\n            }).toJSON = value;\n            attempt(function () {\n              stringifySupported =\n                // Firefox 3.1b1 and b2 serialize string, number, and boolean\n                // primitives as object literals.\n                stringify(0) === \"0\" &&\n                // FF 3.1b1, b2, and JSON 2 serialize wrapped primitives as object\n                // literals.\n                stringify(new Number()) === \"0\" &&\n                stringify(new String()) == '\"\"' &&\n                // FF 3.1b1, 2 throw an error if the value is `null`, `undefined`, or\n                // does not define a canonical JSON representation (this applies to\n                // objects with `toJSON` properties as well, *unless* they are nested\n                // within an object or array).\n                stringify(getClass) === undefined &&\n                // IE 8 serializes `undefined` as `\"undefined\"`. Safari <= 5.1.7 and\n                // FF 3.1b3 pass this test.\n                stringify(undefined) === undefined &&\n                // Safari <= 5.1.7 and FF 3.1b3 throw `Error`s and `TypeError`s,\n                // respectively, if the value is omitted entirely.\n                stringify() === undefined &&\n                // FF 3.1b1, 2 throw an error if the given value is not a number,\n                // string, array, object, Boolean, or `null` literal. This applies to\n                // objects with custom `toJSON` methods as well, unless they are nested\n                // inside object or array literals. YUI 3.0.0b1 ignores custom `toJSON`\n                // methods entirely.\n                stringify(value) === \"1\" &&\n                stringify([value]) == \"[1]\" &&\n                // Prototype <= 1.6.1 serializes `[undefined]` as `\"[]\"` instead of\n                // `\"[null]\"`.\n                stringify([undefined]) == \"[null]\" &&\n                // YUI 3.0.0b1 fails to serialize `null` literals.\n                stringify(null) == \"null\" &&\n                // FF 3.1b1, 2 halts serialization if an array contains a function:\n                // `[1, true, getClass, 1]` serializes as \"[1,true,],\". FF 3.1b3\n                // elides non-JSON values from objects and arrays, unless they\n                // define custom `toJSON` methods.\n                stringify([undefined, getClass, null]) == \"[null,null,null]\" &&\n                // Simple serialization test. FF 3.1b1 uses Unicode escape sequences\n                // where character escape codes are expected (e.g., `\\b` => `\\u0008`).\n                stringify({ \"a\": [value, true, false, null, \"\\x00\\b\\n\\f\\r\\t\"] }) == serialized &&\n                // FF 3.1b1 and b2 ignore the `filter` and `width` arguments.\n                stringify(null, value) === \"1\" &&\n                stringify([1, 2], null, 1) == \"[\\n 1,\\n 2\\n]\";\n            }, function () {\n              stringifySupported = false;\n            });\n          }\n          isSupported = stringifySupported;\n        }\n        // Test `JSON.parse`.\n        if (name == \"json-parse\") {\n          var parse = exports.parse, parseSupported;\n          if (typeof parse == \"function\") {\n            attempt(function () {\n              // FF 3.1b1, b2 will throw an exception if a bare literal is provided.\n              // Conforming implementations should also coerce the initial argument to\n              // a string prior to parsing.\n              if (parse(\"0\") === 0 && !parse(false)) {\n                // Simple parsing test.\n                value = parse(serialized);\n                parseSupported = value[\"a\"].length == 5 && value[\"a\"][0] === 1;\n                if (parseSupported) {\n                  attempt(function () {\n                    // Safari <= 5.1.2 and FF 3.1b1 allow unescaped tabs in strings.\n                    parseSupported = !parse('\"\\t\"');\n                  });\n                  if (parseSupported) {\n                    attempt(function () {\n                      // FF 4.0 and 4.0.1 allow leading `+` signs and leading\n                      // decimal points. FF 4.0, 4.0.1, and IE 9-10 also allow\n                      // certain octal literals.\n                      parseSupported = parse(\"01\") !== 1;\n                    });\n                  }\n                  if (parseSupported) {\n                    attempt(function () {\n                      // FF 4.0, 4.0.1, and Rhino 1.7R3-R4 allow trailing decimal\n                      // points. These environments, along with FF 3.1b1 and 2,\n                      // also allow trailing commas in JSON objects and arrays.\n                      parseSupported = parse(\"1.\") !== 1;\n                    });\n                  }\n                }\n              }\n            }, function () {\n              parseSupported = false;\n            });\n          }\n          isSupported = parseSupported;\n        }\n      }\n      return has[name] = !!isSupported;\n    }\n    has[\"bug-string-char-index\"] = has[\"date-serialization\"] = has[\"json\"] = has[\"json-stringify\"] = has[\"json-parse\"] = null;\n\n    if (!has(\"json\")) {\n      // Common `[[Class]]` name aliases.\n      var functionClass = \"[object Function]\",\n          dateClass = \"[object Date]\",\n          numberClass = \"[object Number]\",\n          stringClass = \"[object String]\",\n          arrayClass = \"[object Array]\",\n          booleanClass = \"[object Boolean]\";\n\n      // Detect incomplete support for accessing string characters by index.\n      var charIndexBuggy = has(\"bug-string-char-index\");\n\n      // Internal: Normalizes the `for...in` iteration algorithm across\n      // environments. Each enumerated key is yielded to a `callback` function.\n      var forOwn = function (object, callback) {\n        var size = 0, Properties, dontEnums, property;\n\n        // Tests for bugs in the current environment's `for...in` algorithm. The\n        // `valueOf` property inherits the non-enumerable flag from\n        // `Object.prototype` in older versions of IE, Netscape, and Mozilla.\n        (Properties = function () {\n          this.valueOf = 0;\n        }).prototype.valueOf = 0;\n\n        // Iterate over a new instance of the `Properties` class.\n        dontEnums = new Properties();\n        for (property in dontEnums) {\n          // Ignore all properties inherited from `Object.prototype`.\n          if (isProperty.call(dontEnums, property)) {\n            size++;\n          }\n        }\n        Properties = dontEnums = null;\n\n        // Normalize the iteration algorithm.\n        if (!size) {\n          // A list of non-enumerable properties inherited from `Object.prototype`.\n          dontEnums = [\"valueOf\", \"toString\", \"toLocaleString\", \"propertyIsEnumerable\", \"isPrototypeOf\", \"hasOwnProperty\", \"constructor\"];\n          // IE <= 8, Mozilla 1.0, and Netscape 6.2 ignore shadowed non-enumerable\n          // properties.\n          forOwn = function (object, callback) {\n            var isFunction = getClass.call(object) == functionClass, property, length;\n            var hasProperty = !isFunction && typeof object.constructor != \"function\" && objectTypes[typeof object.hasOwnProperty] && object.hasOwnProperty || isProperty;\n            for (property in object) {\n              // Gecko <= 1.0 enumerates the `prototype` property of functions under\n              // certain conditions; IE does not.\n              if (!(isFunction && property == \"prototype\") && hasProperty.call(object, property)) {\n                callback(property);\n              }\n            }\n            // Manually invoke the callback for each non-enumerable property.\n            for (length = dontEnums.length; property = dontEnums[--length];) {\n              if (hasProperty.call(object, property)) {\n                callback(property);\n              }\n            }\n          };\n        } else {\n          // No bugs detected; use the standard `for...in` algorithm.\n          forOwn = function (object, callback) {\n            var isFunction = getClass.call(object) == functionClass, property, isConstructor;\n            for (property in object) {\n              if (!(isFunction && property == \"prototype\") && isProperty.call(object, property) && !(isConstructor = property === \"constructor\")) {\n                callback(property);\n              }\n            }\n            // Manually invoke the callback for the `constructor` property due to\n            // cross-environment inconsistencies.\n            if (isConstructor || isProperty.call(object, (property = \"constructor\"))) {\n              callback(property);\n            }\n          };\n        }\n        return forOwn(object, callback);\n      };\n\n      // Public: Serializes a JavaScript `value` as a JSON string. The optional\n      // `filter` argument may specify either a function that alters how object and\n      // array members are serialized, or an array of strings and numbers that\n      // indicates which properties should be serialized. The optional `width`\n      // argument may be either a string or number that specifies the indentation\n      // level of the output.\n      if (!has(\"json-stringify\") && !has(\"date-serialization\")) {\n        // Internal: A map of control characters and their escaped equivalents.\n        var Escapes = {\n          92: \"\\\\\\\\\",\n          34: '\\\\\"',\n          8: \"\\\\b\",\n          12: \"\\\\f\",\n          10: \"\\\\n\",\n          13: \"\\\\r\",\n          9: \"\\\\t\"\n        };\n\n        // Internal: Converts `value` into a zero-padded string such that its\n        // length is at least equal to `width`. The `width` must be <= 6.\n        var leadingZeroes = \"000000\";\n        var toPaddedString = function (width, value) {\n          // The `|| 0` expression is necessary to work around a bug in\n          // Opera <= 7.54u2 where `0 == -0`, but `String(-0) !== \"0\"`.\n          return (leadingZeroes + (value || 0)).slice(-width);\n        };\n\n        // Internal: Serializes a date object.\n        var serializeDate = function (value) {\n          var getData, year, month, date, time, hours, minutes, seconds, milliseconds;\n          // Define additional utility methods if the `Date` methods are buggy.\n          if (!isExtended) {\n            var floor = Math.floor;\n            // A mapping between the months of the year and the number of days between\n            // January 1st and the first of the respective month.\n            var Months = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334];\n            // Internal: Calculates the number of days between the Unix epoch and the\n            // first day of the given month.\n            var getDay = function (year, month) {\n              return Months[month] + 365 * (year - 1970) + floor((year - 1969 + (month = +(month > 1))) / 4) - floor((year - 1901 + month) / 100) + floor((year - 1601 + month) / 400);\n            };\n            getData = function (value) {\n              // Manually compute the year, month, date, hours, minutes,\n              // seconds, and milliseconds if the `getUTC*` methods are\n              // buggy. Adapted from @Yaffle's `date-shim` project.\n              date = floor(value / 864e5);\n              for (year = floor(date / 365.2425) + 1970 - 1; getDay(year + 1, 0) <= date; year++);\n              for (month = floor((date - getDay(year, 0)) / 30.42); getDay(year, month + 1) <= date; month++);\n              date = 1 + date - getDay(year, month);\n              // The `time` value specifies the time within the day (see ES\n              // 5.1 section 15.9.1.2). The formula `(A % B + B) % B` is used\n              // to compute `A modulo B`, as the `%` operator does not\n              // correspond to the `modulo` operation for negative numbers.\n              time = (value % 864e5 + 864e5) % 864e5;\n              // The hours, minutes, seconds, and milliseconds are obtained by\n              // decomposing the time within the day. See section 15.9.1.10.\n              hours = floor(time / 36e5) % 24;\n              minutes = floor(time / 6e4) % 60;\n              seconds = floor(time / 1e3) % 60;\n              milliseconds = time % 1e3;\n            };\n          } else {\n            getData = function (value) {\n              year = value.getUTCFullYear();\n              month = value.getUTCMonth();\n              date = value.getUTCDate();\n              hours = value.getUTCHours();\n              minutes = value.getUTCMinutes();\n              seconds = value.getUTCSeconds();\n              milliseconds = value.getUTCMilliseconds();\n            };\n          }\n          serializeDate = function (value) {\n            if (value > -1 / 0 && value < 1 / 0) {\n              // Dates are serialized according to the `Date#toJSON` method\n              // specified in ES 5.1 section 15.9.5.44. See section 15.9.1.15\n              // for the ISO 8601 date time string format.\n              getData(value);\n              // Serialize extended years correctly.\n              value = (year <= 0 || year >= 1e4 ? (year < 0 ? \"-\" : \"+\") + toPaddedString(6, year < 0 ? -year : year) : toPaddedString(4, year)) +\n              \"-\" + toPaddedString(2, month + 1) + \"-\" + toPaddedString(2, date) +\n              // Months, dates, hours, minutes, and seconds should have two\n              // digits; milliseconds should have three.\n              \"T\" + toPaddedString(2, hours) + \":\" + toPaddedString(2, minutes) + \":\" + toPaddedString(2, seconds) +\n              // Milliseconds are optional in ES 5.0, but required in 5.1.\n              \".\" + toPaddedString(3, milliseconds) + \"Z\";\n              year = month = date = hours = minutes = seconds = milliseconds = null;\n            } else {\n              value = null;\n            }\n            return value;\n          };\n          return serializeDate(value);\n        };\n\n        // For environments with `JSON.stringify` but buggy date serialization,\n        // we override the native `Date#toJSON` implementation with a\n        // spec-compliant one.\n        if (has(\"json-stringify\") && !has(\"date-serialization\")) {\n          // Internal: the `Date#toJSON` implementation used to override the native one.\n          function dateToJSON (key) {\n            return serializeDate(this);\n          }\n\n          // Public: `JSON.stringify`. See ES 5.1 section 15.12.3.\n          var nativeStringify = exports.stringify;\n          exports.stringify = function (source, filter, width) {\n            var nativeToJSON = Date.prototype.toJSON;\n            Date.prototype.toJSON = dateToJSON;\n            var result = nativeStringify(source, filter, width);\n            Date.prototype.toJSON = nativeToJSON;\n            return result;\n          }\n        } else {\n          // Internal: Double-quotes a string `value`, replacing all ASCII control\n          // characters (characters with code unit values between 0 and 31) with\n          // their escaped equivalents. This is an implementation of the\n          // `Quote(value)` operation defined in ES 5.1 section 15.12.3.\n          var unicodePrefix = \"\\\\u00\";\n          var escapeChar = function (character) {\n            var charCode = character.charCodeAt(0), escaped = Escapes[charCode];\n            if (escaped) {\n              return escaped;\n            }\n            return unicodePrefix + toPaddedString(2, charCode.toString(16));\n          };\n          var reEscape = /[\\x00-\\x1f\\x22\\x5c]/g;\n          var quote = function (value) {\n            reEscape.lastIndex = 0;\n            return '\"' +\n              (\n                reEscape.test(value)\n                  ? value.replace(reEscape, escapeChar)\n                  : value\n              ) +\n              '\"';\n          };\n\n          // Internal: Recursively serializes an object. Implements the\n          // `Str(key, holder)`, `JO(value)`, and `JA(value)` operations.\n          var serialize = function (property, object, callback, properties, whitespace, indentation, stack) {\n            var value, type, className, results, element, index, length, prefix, result;\n            attempt(function () {\n              // Necessary for host object support.\n              value = object[property];\n            });\n            if (typeof value == \"object\" && value) {\n              if (value.getUTCFullYear && getClass.call(value) == dateClass && value.toJSON === Date.prototype.toJSON) {\n                value = serializeDate(value);\n              } else if (typeof value.toJSON == \"function\") {\n                value = value.toJSON(property);\n              }\n            }\n            if (callback) {\n              // If a replacement function was provided, call it to obtain the value\n              // for serialization.\n              value = callback.call(object, property, value);\n            }\n            // Exit early if value is `undefined` or `null`.\n            if (value == undefined) {\n              return value === undefined ? value : \"null\";\n            }\n            type = typeof value;\n            // Only call `getClass` if the value is an object.\n            if (type == \"object\") {\n              className = getClass.call(value);\n            }\n            switch (className || type) {\n              case \"boolean\":\n              case booleanClass:\n                // Booleans are represented literally.\n                return \"\" + value;\n              case \"number\":\n              case numberClass:\n                // JSON numbers must be finite. `Infinity` and `NaN` are serialized as\n                // `\"null\"`.\n                return value > -1 / 0 && value < 1 / 0 ? \"\" + value : \"null\";\n              case \"string\":\n              case stringClass:\n                // Strings are double-quoted and escaped.\n                return quote(\"\" + value);\n            }\n            // Recursively serialize objects and arrays.\n            if (typeof value == \"object\") {\n              // Check for cyclic structures. This is a linear search; performance\n              // is inversely proportional to the number of unique nested objects.\n              for (length = stack.length; length--;) {\n                if (stack[length] === value) {\n                  // Cyclic structures cannot be serialized by `JSON.stringify`.\n                  throw TypeError();\n                }\n              }\n              // Add the object to the stack of traversed objects.\n              stack.push(value);\n              results = [];\n              // Save the current indentation level and indent one additional level.\n              prefix = indentation;\n              indentation += whitespace;\n              if (className == arrayClass) {\n                // Recursively serialize array elements.\n                for (index = 0, length = value.length; index < length; index++) {\n                  element = serialize(index, value, callback, properties, whitespace, indentation, stack);\n                  results.push(element === undefined ? \"null\" : element);\n                }\n                result = results.length ? (whitespace ? \"[\\n\" + indentation + results.join(\",\\n\" + indentation) + \"\\n\" + prefix + \"]\" : (\"[\" + results.join(\",\") + \"]\")) : \"[]\";\n              } else {\n                // Recursively serialize object members. Members are selected from\n                // either a user-specified list of property names, or the object\n                // itself.\n                forOwn(properties || value, function (property) {\n                  var element = serialize(property, value, callback, properties, whitespace, indentation, stack);\n                  if (element !== undefined) {\n                    // According to ES 5.1 section 15.12.3: \"If `gap` {whitespace}\n                    // is not the empty string, let `member` {quote(property) + \":\"}\n                    // be the concatenation of `member` and the `space` character.\"\n                    // The \"`space` character\" refers to the literal space\n                    // character, not the `space` {width} argument provided to\n                    // `JSON.stringify`.\n                    results.push(quote(property) + \":\" + (whitespace ? \" \" : \"\") + element);\n                  }\n                });\n                result = results.length ? (whitespace ? \"{\\n\" + indentation + results.join(\",\\n\" + indentation) + \"\\n\" + prefix + \"}\" : (\"{\" + results.join(\",\") + \"}\")) : \"{}\";\n              }\n              // Remove the object from the traversed object stack.\n              stack.pop();\n              return result;\n            }\n          };\n\n          // Public: `JSON.stringify`. See ES 5.1 section 15.12.3.\n          exports.stringify = function (source, filter, width) {\n            var whitespace, callback, properties, className;\n            if (objectTypes[typeof filter] && filter) {\n              className = getClass.call(filter);\n              if (className == functionClass) {\n                callback = filter;\n              } else if (className == arrayClass) {\n                // Convert the property names array into a makeshift set.\n                properties = {};\n                for (var index = 0, length = filter.length, value; index < length;) {\n                  value = filter[index++];\n                  className = getClass.call(value);\n                  if (className == \"[object String]\" || className == \"[object Number]\") {\n                    properties[value] = 1;\n                  }\n                }\n              }\n            }\n            if (width) {\n              className = getClass.call(width);\n              if (className == numberClass) {\n                // Convert the `width` to an integer and create a string containing\n                // `width` number of space characters.\n                if ((width -= width % 1) > 0) {\n                  if (width > 10) {\n                    width = 10;\n                  }\n                  for (whitespace = \"\"; whitespace.length < width;) {\n                    whitespace += \" \";\n                  }\n                }\n              } else if (className == stringClass) {\n                whitespace = width.length <= 10 ? width : width.slice(0, 10);\n              }\n            }\n            // Opera <= 7.54u2 discards the values associated with empty string keys\n            // (`\"\"`) only if they are used directly within an object member list\n            // (e.g., `!(\"\" in { \"\": 1})`).\n            return serialize(\"\", (value = {}, value[\"\"] = source, value), callback, properties, whitespace, \"\", []);\n          };\n        }\n      }\n\n      // Public: Parses a JSON source string.\n      if (!has(\"json-parse\")) {\n        var fromCharCode = String.fromCharCode;\n\n        // Internal: A map of escaped control characters and their unescaped\n        // equivalents.\n        var Unescapes = {\n          92: \"\\\\\",\n          34: '\"',\n          47: \"/\",\n          98: \"\\b\",\n          116: \"\\t\",\n          110: \"\\n\",\n          102: \"\\f\",\n          114: \"\\r\"\n        };\n\n        // Internal: Stores the parser state.\n        var Index, Source;\n\n        // Internal: Resets the parser state and throws a `SyntaxError`.\n        var abort = function () {\n          Index = Source = null;\n          throw SyntaxError();\n        };\n\n        // Internal: Returns the next token, or `\"$\"` if the parser has reached\n        // the end of the source string. A token may be a string, number, `null`\n        // literal, or Boolean literal.\n        var lex = function () {\n          var source = Source, length = source.length, value, begin, position, isSigned, charCode;\n          while (Index < length) {\n            charCode = source.charCodeAt(Index);\n            switch (charCode) {\n              case 9: case 10: case 13: case 32:\n                // Skip whitespace tokens, including tabs, carriage returns, line\n                // feeds, and space characters.\n                Index++;\n                break;\n              case 123: case 125: case 91: case 93: case 58: case 44:\n                // Parse a punctuator token (`{`, `}`, `[`, `]`, `:`, or `,`) at\n                // the current position.\n                value = charIndexBuggy ? source.charAt(Index) : source[Index];\n                Index++;\n                return value;\n              case 34:\n                // `\"` delimits a JSON string; advance to the next character and\n                // begin parsing the string. String tokens are prefixed with the\n                // sentinel `@` character to distinguish them from punctuators and\n                // end-of-string tokens.\n                for (value = \"@\", Index++; Index < length;) {\n                  charCode = source.charCodeAt(Index);\n                  if (charCode < 32) {\n                    // Unescaped ASCII control characters (those with a code unit\n                    // less than the space character) are not permitted.\n                    abort();\n                  } else if (charCode == 92) {\n                    // A reverse solidus (`\\`) marks the beginning of an escaped\n                    // control character (including `\"`, `\\`, and `/`) or Unicode\n                    // escape sequence.\n                    charCode = source.charCodeAt(++Index);\n                    switch (charCode) {\n                      case 92: case 34: case 47: case 98: case 116: case 110: case 102: case 114:\n                        // Revive escaped control characters.\n                        value += Unescapes[charCode];\n                        Index++;\n                        break;\n                      case 117:\n                        // `\\u` marks the beginning of a Unicode escape sequence.\n                        // Advance to the first character and validate the\n                        // four-digit code point.\n                        begin = ++Index;\n                        for (position = Index + 4; Index < position; Index++) {\n                          charCode = source.charCodeAt(Index);\n                          // A valid sequence comprises four hexdigits (case-\n                          // insensitive) that form a single hexadecimal value.\n                          if (!(charCode >= 48 && charCode <= 57 || charCode >= 97 && charCode <= 102 || charCode >= 65 && charCode <= 70)) {\n                            // Invalid Unicode escape sequence.\n                            abort();\n                          }\n                        }\n                        // Revive the escaped character.\n                        value += fromCharCode(\"0x\" + source.slice(begin, Index));\n                        break;\n                      default:\n                        // Invalid escape sequence.\n                        abort();\n                    }\n                  } else {\n                    if (charCode == 34) {\n                      // An unescaped double-quote character marks the end of the\n                      // string.\n                      break;\n                    }\n                    charCode = source.charCodeAt(Index);\n                    begin = Index;\n                    // Optimize for the common case where a string is valid.\n                    while (charCode >= 32 && charCode != 92 && charCode != 34) {\n                      charCode = source.charCodeAt(++Index);\n                    }\n                    // Append the string as-is.\n                    value += source.slice(begin, Index);\n                  }\n                }\n                if (source.charCodeAt(Index) == 34) {\n                  // Advance to the next character and return the revived string.\n                  Index++;\n                  return value;\n                }\n                // Unterminated string.\n                abort();\n              default:\n                // Parse numbers and literals.\n                begin = Index;\n                // Advance past the negative sign, if one is specified.\n                if (charCode == 45) {\n                  isSigned = true;\n                  charCode = source.charCodeAt(++Index);\n                }\n                // Parse an integer or floating-point value.\n                if (charCode >= 48 && charCode <= 57) {\n                  // Leading zeroes are interpreted as octal literals.\n                  if (charCode == 48 && ((charCode = source.charCodeAt(Index + 1)), charCode >= 48 && charCode <= 57)) {\n                    // Illegal octal literal.\n                    abort();\n                  }\n                  isSigned = false;\n                  // Parse the integer component.\n                  for (; Index < length && ((charCode = source.charCodeAt(Index)), charCode >= 48 && charCode <= 57); Index++);\n                  // Floats cannot contain a leading decimal point; however, this\n                  // case is already accounted for by the parser.\n                  if (source.charCodeAt(Index) == 46) {\n                    position = ++Index;\n                    // Parse the decimal component.\n                    for (; position < length; position++) {\n                      charCode = source.charCodeAt(position);\n                      if (charCode < 48 || charCode > 57) {\n                        break;\n                      }\n                    }\n                    if (position == Index) {\n                      // Illegal trailing decimal.\n                      abort();\n                    }\n                    Index = position;\n                  }\n                  // Parse exponents. The `e` denoting the exponent is\n                  // case-insensitive.\n                  charCode = source.charCodeAt(Index);\n                  if (charCode == 101 || charCode == 69) {\n                    charCode = source.charCodeAt(++Index);\n                    // Skip past the sign following the exponent, if one is\n                    // specified.\n                    if (charCode == 43 || charCode == 45) {\n                      Index++;\n                    }\n                    // Parse the exponential component.\n                    for (position = Index; position < length; position++) {\n                      charCode = source.charCodeAt(position);\n                      if (charCode < 48 || charCode > 57) {\n                        break;\n                      }\n                    }\n                    if (position == Index) {\n                      // Illegal empty exponent.\n                      abort();\n                    }\n                    Index = position;\n                  }\n                  // Coerce the parsed value to a JavaScript number.\n                  return +source.slice(begin, Index);\n                }\n                // A negative sign may only precede numbers.\n                if (isSigned) {\n                  abort();\n                }\n                // `true`, `false`, and `null` literals.\n                var temp = source.slice(Index, Index + 4);\n                if (temp == \"true\") {\n                  Index += 4;\n                  return true;\n                } else if (temp == \"fals\" && source.charCodeAt(Index + 4 ) == 101) {\n                  Index += 5;\n                  return false;\n                } else if (temp == \"null\") {\n                  Index += 4;\n                  return null;\n                }\n                // Unrecognized token.\n                abort();\n            }\n          }\n          // Return the sentinel `$` character if the parser has reached the end\n          // of the source string.\n          return \"$\";\n        };\n\n        // Internal: Parses a JSON `value` token.\n        var get = function (value) {\n          var results, hasMembers;\n          if (value == \"$\") {\n            // Unexpected end of input.\n            abort();\n          }\n          if (typeof value == \"string\") {\n            if ((charIndexBuggy ? value.charAt(0) : value[0]) == \"@\") {\n              // Remove the sentinel `@` character.\n              return value.slice(1);\n            }\n            // Parse object and array literals.\n            if (value == \"[\") {\n              // Parses a JSON array, returning a new JavaScript array.\n              results = [];\n              for (;;) {\n                value = lex();\n                // A closing square bracket marks the end of the array literal.\n                if (value == \"]\") {\n                  break;\n                }\n                // If the array literal contains elements, the current token\n                // should be a comma separating the previous element from the\n                // next.\n                if (hasMembers) {\n                  if (value == \",\") {\n                    value = lex();\n                    if (value == \"]\") {\n                      // Unexpected trailing `,` in array literal.\n                      abort();\n                    }\n                  } else {\n                    // A `,` must separate each array element.\n                    abort();\n                  }\n                } else {\n                  hasMembers = true;\n                }\n                // Elisions and leading commas are not permitted.\n                if (value == \",\") {\n                  abort();\n                }\n                results.push(get(value));\n              }\n              return results;\n            } else if (value == \"{\") {\n              // Parses a JSON object, returning a new JavaScript object.\n              results = {};\n              for (;;) {\n                value = lex();\n                // A closing curly brace marks the end of the object literal.\n                if (value == \"}\") {\n                  break;\n                }\n                // If the object literal contains members, the current token\n                // should be a comma separator.\n                if (hasMembers) {\n                  if (value == \",\") {\n                    value = lex();\n                    if (value == \"}\") {\n                      // Unexpected trailing `,` in object literal.\n                      abort();\n                    }\n                  } else {\n                    // A `,` must separate each object member.\n                    abort();\n                  }\n                } else {\n                  hasMembers = true;\n                }\n                // Leading commas are not permitted, object property names must be\n                // double-quoted strings, and a `:` must separate each property\n                // name and value.\n                if (value == \",\" || typeof value != \"string\" || (charIndexBuggy ? value.charAt(0) : value[0]) != \"@\" || lex() != \":\") {\n                  abort();\n                }\n                results[value.slice(1)] = get(lex());\n              }\n              return results;\n            }\n            // Unexpected token encountered.\n            abort();\n          }\n          return value;\n        };\n\n        // Internal: Updates a traversed object member.\n        var update = function (source, property, callback) {\n          var element = walk(source, property, callback);\n          if (element === undefined) {\n            delete source[property];\n          } else {\n            source[property] = element;\n          }\n        };\n\n        // Internal: Recursively traverses a parsed JSON object, invoking the\n        // `callback` function for each value. This is an implementation of the\n        // `Walk(holder, name)` operation defined in ES 5.1 section 15.12.2.\n        var walk = function (source, property, callback) {\n          var value = source[property], length;\n          if (typeof value == \"object\" && value) {\n            // `forOwn` can't be used to traverse an array in Opera <= 8.54\n            // because its `Object#hasOwnProperty` implementation returns `false`\n            // for array indices (e.g., `![1, 2, 3].hasOwnProperty(\"0\")`).\n            if (getClass.call(value) == arrayClass) {\n              for (length = value.length; length--;) {\n                update(getClass, forOwn, value, length, callback);\n              }\n            } else {\n              forOwn(value, function (property) {\n                update(value, property, callback);\n              });\n            }\n          }\n          return callback.call(source, property, value);\n        };\n\n        // Public: `JSON.parse`. See ES 5.1 section 15.12.2.\n        exports.parse = function (source, callback) {\n          var result, value;\n          Index = 0;\n          Source = \"\" + source;\n          result = get(lex());\n          // If a JSON string contains multiple tokens, it is invalid.\n          if (lex() != \"$\") {\n            abort();\n          }\n          // Reset the parser state.\n          Index = Source = null;\n          return callback && getClass.call(callback) == functionClass ? walk((value = {}, value[\"\"] = result, value), \"\", callback) : result;\n        };\n      }\n    }\n\n    exports.runInContext = runInContext;\n    return exports;\n  }\n\n  if (freeExports && !isLoader) {\n    // Export for CommonJS environments.\n    runInContext(root, freeExports);\n  } else {\n    // Export for web browsers and JavaScript engines.\n    var nativeJSON = root.JSON,\n        previousJSON = root.JSON3,\n        isRestored = false;\n\n    var JSON3 = runInContext(root, (root.JSON3 = {\n      // Public: Restores the original value of the global `JSON` object and\n      // returns a reference to the `JSON3` object.\n      \"noConflict\": function () {\n        if (!isRestored) {\n          isRestored = true;\n          root.JSON = nativeJSON;\n          root.JSON3 = previousJSON;\n          nativeJSON = previousJSON = null;\n        }\n        return JSON3;\n      }\n    }));\n\n    root.JSON = {\n      \"parse\": JSON3.parse,\n      \"stringify\": JSON3.stringify\n    };\n  }\n\n  // Export for asynchronous module loaders.\n  if (isLoader) {\n    define(function () {\n      return JSON3;\n    });\n  }\n}).call(this);\n\n}).call(this,typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n\n},{}],59:[function(require,module,exports){\n'use strict';\n\nvar has = Object.prototype.hasOwnProperty\n  , undef;\n\n/**\n * Decode a URI encoded string.\n *\n * @param {String} input The URI encoded string.\n * @returns {String|Null} The decoded string.\n * @api private\n */\nfunction decode(input) {\n  try {\n    return decodeURIComponent(input.replace(/\\+/g, ' '));\n  } catch (e) {\n    return null;\n  }\n}\n\n/**\n * Attempts to encode a given input.\n *\n * @param {String} input The string that needs to be encoded.\n * @returns {String|Null} The encoded string.\n * @api private\n */\nfunction encode(input) {\n  try {\n    return encodeURIComponent(input);\n  } catch (e) {\n    return null;\n  }\n}\n\n/**\n * Simple query string parser.\n *\n * @param {String} query The query string that needs to be parsed.\n * @returns {Object}\n * @api public\n */\nfunction querystring(query) {\n  var parser = /([^=?&]+)=?([^&]*)/g\n    , result = {}\n    , part;\n\n  while (part = parser.exec(query)) {\n    var key = decode(part[1])\n      , value = decode(part[2]);\n\n    //\n    // Prevent overriding of existing properties. This ensures that build-in\n    // methods like `toString` or __proto__ are not overriden by malicious\n    // querystrings.\n    //\n    // In the case if failed decoding, we want to omit the key/value pairs\n    // from the result.\n    //\n    if (key === null || value === null || key in result) continue;\n    result[key] = value;\n  }\n\n  return result;\n}\n\n/**\n * Transform a query string to an object.\n *\n * @param {Object} obj Object that should be transformed.\n * @param {String} prefix Optional prefix.\n * @returns {String}\n * @api public\n */\nfunction querystringify(obj, prefix) {\n  prefix = prefix || '';\n\n  var pairs = []\n    , value\n    , key;\n\n  //\n  // Optionally prefix with a '?' if needed\n  //\n  if ('string' !== typeof prefix) prefix = '?';\n\n  for (key in obj) {\n    if (has.call(obj, key)) {\n      value = obj[key];\n\n      //\n      // Edge cases where we actually want to encode the value to an empty\n      // string instead of the stringified value.\n      //\n      if (!value && (value === null || value === undef || isNaN(value))) {\n        value = '';\n      }\n\n      key = encodeURIComponent(key);\n      value = encodeURIComponent(value);\n\n      //\n      // If we failed to encode the strings, we should bail out as we don't\n      // want to add invalid strings to the query.\n      //\n      if (key === null || value === null) continue;\n      pairs.push(key +'='+ value);\n    }\n  }\n\n  return pairs.length ? prefix + pairs.join('&') : '';\n}\n\n//\n// Expose the module.\n//\nexports.stringify = querystringify;\nexports.parse = querystring;\n\n},{}],60:[function(require,module,exports){\n'use strict';\n\n/**\n * Check if we're required to add a port number.\n *\n * @see https://url.spec.whatwg.org/#default-port\n * @param {Number|String} port Port number we need to check\n * @param {String} protocol Protocol we need to check against.\n * @returns {Boolean} Is it a default port for the given protocol\n * @api private\n */\nmodule.exports = function required(port, protocol) {\n  protocol = protocol.split(':')[0];\n  port = +port;\n\n  if (!port) return false;\n\n  switch (protocol) {\n    case 'http':\n    case 'ws':\n    return port !== 80;\n\n    case 'https':\n    case 'wss':\n    return port !== 443;\n\n    case 'ftp':\n    return port !== 21;\n\n    case 'gopher':\n    return port !== 70;\n\n    case 'file':\n    return false;\n  }\n\n  return port !== 0;\n};\n\n},{}],61:[function(require,module,exports){\n(function (global){\n'use strict';\n\nvar required = require('requires-port')\n  , qs = require('querystringify')\n  , slashes = /^[A-Za-z][A-Za-z0-9+-.]*:\\/\\//\n  , protocolre = /^([a-z][a-z0-9.+-]*:)?(\\/\\/)?([\\S\\s]*)/i\n  , whitespace = '[\\\\x09\\\\x0A\\\\x0B\\\\x0C\\\\x0D\\\\x20\\\\xA0\\\\u1680\\\\u180E\\\\u2000\\\\u2001\\\\u2002\\\\u2003\\\\u2004\\\\u2005\\\\u2006\\\\u2007\\\\u2008\\\\u2009\\\\u200A\\\\u202F\\\\u205F\\\\u3000\\\\u2028\\\\u2029\\\\uFEFF]'\n  , left = new RegExp('^'+ whitespace +'+');\n\n/**\n * Trim a given string.\n *\n * @param {String} str String to trim.\n * @public\n */\nfunction trimLeft(str) {\n  return (str ? str : '').toString().replace(left, '');\n}\n\n/**\n * These are the parse rules for the URL parser, it informs the parser\n * about:\n *\n * 0. The char it Needs to parse, if it's a string it should be done using\n *    indexOf, RegExp using exec and NaN means set as current value.\n * 1. The property we should set when parsing this value.\n * 2. Indication if it's backwards or forward parsing, when set as number it's\n *    the value of extra chars that should be split off.\n * 3. Inherit from location if non existing in the parser.\n * 4. `toLowerCase` the resulting value.\n */\nvar rules = [\n  ['#', 'hash'],                        // Extract from the back.\n  ['?', 'query'],                       // Extract from the back.\n  function sanitize(address) {          // Sanitize what is left of the address\n    return address.replace('\\\\', '/');\n  },\n  ['/', 'pathname'],                    // Extract from the back.\n  ['@', 'auth', 1],                     // Extract from the front.\n  [NaN, 'host', undefined, 1, 1],       // Set left over value.\n  [/:(\\d+)$/, 'port', undefined, 1],    // RegExp the back.\n  [NaN, 'hostname', undefined, 1, 1]    // Set left over.\n];\n\n/**\n * These properties should not be copied or inherited from. This is only needed\n * for all non blob URL's as a blob URL does not include a hash, only the\n * origin.\n *\n * @type {Object}\n * @private\n */\nvar ignore = { hash: 1, query: 1 };\n\n/**\n * The location object differs when your code is loaded through a normal page,\n * Worker or through a worker using a blob. And with the blobble begins the\n * trouble as the location object will contain the URL of the blob, not the\n * location of the page where our code is loaded in. The actual origin is\n * encoded in the `pathname` so we can thankfully generate a good \"default\"\n * location from it so we can generate proper relative URL's again.\n *\n * @param {Object|String} loc Optional default location object.\n * @returns {Object} lolcation object.\n * @public\n */\nfunction lolcation(loc) {\n  var globalVar;\n\n  if (typeof window !== 'undefined') globalVar = window;\n  else if (typeof global !== 'undefined') globalVar = global;\n  else if (typeof self !== 'undefined') globalVar = self;\n  else globalVar = {};\n\n  var location = globalVar.location || {};\n  loc = loc || location;\n\n  var finaldestination = {}\n    , type = typeof loc\n    , key;\n\n  if ('blob:' === loc.protocol) {\n    finaldestination = new Url(unescape(loc.pathname), {});\n  } else if ('string' === type) {\n    finaldestination = new Url(loc, {});\n    for (key in ignore) delete finaldestination[key];\n  } else if ('object' === type) {\n    for (key in loc) {\n      if (key in ignore) continue;\n      finaldestination[key] = loc[key];\n    }\n\n    if (finaldestination.slashes === undefined) {\n      finaldestination.slashes = slashes.test(loc.href);\n    }\n  }\n\n  return finaldestination;\n}\n\n/**\n * @typedef ProtocolExtract\n * @type Object\n * @property {String} protocol Protocol matched in the URL, in lowercase.\n * @property {Boolean} slashes `true` if protocol is followed by \"//\", else `false`.\n * @property {String} rest Rest of the URL that is not part of the protocol.\n */\n\n/**\n * Extract protocol information from a URL with/without double slash (\"//\").\n *\n * @param {String} address URL we want to extract from.\n * @return {ProtocolExtract} Extracted information.\n * @private\n */\nfunction extractProtocol(address) {\n  address = trimLeft(address);\n  var match = protocolre.exec(address);\n\n  return {\n    protocol: match[1] ? match[1].toLowerCase() : '',\n    slashes: !!match[2],\n    rest: match[3]\n  };\n}\n\n/**\n * Resolve a relative URL pathname against a base URL pathname.\n *\n * @param {String} relative Pathname of the relative URL.\n * @param {String} base Pathname of the base URL.\n * @return {String} Resolved pathname.\n * @private\n */\nfunction resolve(relative, base) {\n  if (relative === '') return base;\n\n  var path = (base || '/').split('/').slice(0, -1).concat(relative.split('/'))\n    , i = path.length\n    , last = path[i - 1]\n    , unshift = false\n    , up = 0;\n\n  while (i--) {\n    if (path[i] === '.') {\n      path.splice(i, 1);\n    } else if (path[i] === '..') {\n      path.splice(i, 1);\n      up++;\n    } else if (up) {\n      if (i === 0) unshift = true;\n      path.splice(i, 1);\n      up--;\n    }\n  }\n\n  if (unshift) path.unshift('');\n  if (last === '.' || last === '..') path.push('');\n\n  return path.join('/');\n}\n\n/**\n * The actual URL instance. Instead of returning an object we've opted-in to\n * create an actual constructor as it's much more memory efficient and\n * faster and it pleases my OCD.\n *\n * It is worth noting that we should not use `URL` as class name to prevent\n * clashes with the global URL instance that got introduced in browsers.\n *\n * @constructor\n * @param {String} address URL we want to parse.\n * @param {Object|String} [location] Location defaults for relative paths.\n * @param {Boolean|Function} [parser] Parser for the query string.\n * @private\n */\nfunction Url(address, location, parser) {\n  address = trimLeft(address);\n\n  if (!(this instanceof Url)) {\n    return new Url(address, location, parser);\n  }\n\n  var relative, extracted, parse, instruction, index, key\n    , instructions = rules.slice()\n    , type = typeof location\n    , url = this\n    , i = 0;\n\n  //\n  // The following if statements allows this module two have compatibility with\n  // 2 different API:\n  //\n  // 1. Node.js's `url.parse` api which accepts a URL, boolean as arguments\n  //    where the boolean indicates that the query string should also be parsed.\n  //\n  // 2. The `URL` interface of the browser which accepts a URL, object as\n  //    arguments. The supplied object will be used as default values / fall-back\n  //    for relative paths.\n  //\n  if ('object' !== type && 'string' !== type) {\n    parser = location;\n    location = null;\n  }\n\n  if (parser && 'function' !== typeof parser) parser = qs.parse;\n\n  location = lolcation(location);\n\n  //\n  // Extract protocol information before running the instructions.\n  //\n  extracted = extractProtocol(address || '');\n  relative = !extracted.protocol && !extracted.slashes;\n  url.slashes = extracted.slashes || relative && location.slashes;\n  url.protocol = extracted.protocol || location.protocol || '';\n  address = extracted.rest;\n\n  //\n  // When the authority component is absent the URL starts with a path\n  // component.\n  //\n  if (!extracted.slashes) instructions[3] = [/(.*)/, 'pathname'];\n\n  for (; i < instructions.length; i++) {\n    instruction = instructions[i];\n\n    if (typeof instruction === 'function') {\n      address = instruction(address);\n      continue;\n    }\n\n    parse = instruction[0];\n    key = instruction[1];\n\n    if (parse !== parse) {\n      url[key] = address;\n    } else if ('string' === typeof parse) {\n      if (~(index = address.indexOf(parse))) {\n        if ('number' === typeof instruction[2]) {\n          url[key] = address.slice(0, index);\n          address = address.slice(index + instruction[2]);\n        } else {\n          url[key] = address.slice(index);\n          address = address.slice(0, index);\n        }\n      }\n    } else if ((index = parse.exec(address))) {\n      url[key] = index[1];\n      address = address.slice(0, index.index);\n    }\n\n    url[key] = url[key] || (\n      relative && instruction[3] ? location[key] || '' : ''\n    );\n\n    //\n    // Hostname, host and protocol should be lowercased so they can be used to\n    // create a proper `origin`.\n    //\n    if (instruction[4]) url[key] = url[key].toLowerCase();\n  }\n\n  //\n  // Also parse the supplied query string in to an object. If we're supplied\n  // with a custom parser as function use that instead of the default build-in\n  // parser.\n  //\n  if (parser) url.query = parser(url.query);\n\n  //\n  // If the URL is relative, resolve the pathname against the base URL.\n  //\n  if (\n      relative\n    && location.slashes\n    && url.pathname.charAt(0) !== '/'\n    && (url.pathname !== '' || location.pathname !== '')\n  ) {\n    url.pathname = resolve(url.pathname, location.pathname);\n  }\n\n  //\n  // We should not add port numbers if they are already the default port number\n  // for a given protocol. As the host also contains the port number we're going\n  // override it with the hostname which contains no port number.\n  //\n  if (!required(url.port, url.protocol)) {\n    url.host = url.hostname;\n    url.port = '';\n  }\n\n  //\n  // Parse down the `auth` for the username and password.\n  //\n  url.username = url.password = '';\n  if (url.auth) {\n    instruction = url.auth.split(':');\n    url.username = instruction[0] || '';\n    url.password = instruction[1] || '';\n  }\n\n  url.origin = url.protocol && url.host && url.protocol !== 'file:'\n    ? url.protocol +'//'+ url.host\n    : 'null';\n\n  //\n  // The href is just the compiled result.\n  //\n  url.href = url.toString();\n}\n\n/**\n * This is convenience method for changing properties in the URL instance to\n * insure that they all propagate correctly.\n *\n * @param {String} part          Property we need to adjust.\n * @param {Mixed} value          The newly assigned value.\n * @param {Boolean|Function} fn  When setting the query, it will be the function\n *                               used to parse the query.\n *                               When setting the protocol, double slash will be\n *                               removed from the final url if it is true.\n * @returns {URL} URL instance for chaining.\n * @public\n */\nfunction set(part, value, fn) {\n  var url = this;\n\n  switch (part) {\n    case 'query':\n      if ('string' === typeof value && value.length) {\n        value = (fn || qs.parse)(value);\n      }\n\n      url[part] = value;\n      break;\n\n    case 'port':\n      url[part] = value;\n\n      if (!required(value, url.protocol)) {\n        url.host = url.hostname;\n        url[part] = '';\n      } else if (value) {\n        url.host = url.hostname +':'+ value;\n      }\n\n      break;\n\n    case 'hostname':\n      url[part] = value;\n\n      if (url.port) value += ':'+ url.port;\n      url.host = value;\n      break;\n\n    case 'host':\n      url[part] = value;\n\n      if (/:\\d+$/.test(value)) {\n        value = value.split(':');\n        url.port = value.pop();\n        url.hostname = value.join(':');\n      } else {\n        url.hostname = value;\n        url.port = '';\n      }\n\n      break;\n\n    case 'protocol':\n      url.protocol = value.toLowerCase();\n      url.slashes = !fn;\n      break;\n\n    case 'pathname':\n    case 'hash':\n      if (value) {\n        var char = part === 'pathname' ? '/' : '#';\n        url[part] = value.charAt(0) !== char ? char + value : value;\n      } else {\n        url[part] = value;\n      }\n      break;\n\n    default:\n      url[part] = value;\n  }\n\n  for (var i = 0; i < rules.length; i++) {\n    var ins = rules[i];\n\n    if (ins[4]) url[ins[1]] = url[ins[1]].toLowerCase();\n  }\n\n  url.origin = url.protocol && url.host && url.protocol !== 'file:'\n    ? url.protocol +'//'+ url.host\n    : 'null';\n\n  url.href = url.toString();\n\n  return url;\n}\n\n/**\n * Transform the properties back in to a valid and full URL string.\n *\n * @param {Function} stringify Optional query stringify function.\n * @returns {String} Compiled version of the URL.\n * @public\n */\nfunction toString(stringify) {\n  if (!stringify || 'function' !== typeof stringify) stringify = qs.stringify;\n\n  var query\n    , url = this\n    , protocol = url.protocol;\n\n  if (protocol && protocol.charAt(protocol.length - 1) !== ':') protocol += ':';\n\n  var result = protocol + (url.slashes ? '//' : '');\n\n  if (url.username) {\n    result += url.username;\n    if (url.password) result += ':'+ url.password;\n    result += '@';\n  }\n\n  result += url.host + url.pathname;\n\n  query = 'object' === typeof url.query ? stringify(url.query) : url.query;\n  if (query) result += '?' !== query.charAt(0) ? '?'+ query : query;\n\n  if (url.hash) result += url.hash;\n\n  return result;\n}\n\nUrl.prototype = { set: set, toString: toString };\n\n//\n// Expose the URL parser and some additional properties that might be useful for\n// others or testing.\n//\nUrl.extractProtocol = extractProtocol;\nUrl.location = lolcation;\nUrl.trimLeft = trimLeft;\nUrl.qs = qs;\n\nmodule.exports = Url;\n\n}).call(this,typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n\n},{\"querystringify\":59,\"requires-port\":60}]},{},[1])(1)\n});\n\n\n//# sourceMappingURL=sockjs.js.map\n","'use strict';\nvar ansiRegex = require('ansi-regex')();\n\nmodule.exports = function (str) {\n\treturn typeof str === 'string' ? str.replace(ansiRegex, '') : str;\n};\n","// threejs.org/license\nconst REVISION = '124';\nconst MOUSE = { LEFT: 0, MIDDLE: 1, RIGHT: 2, ROTATE: 0, DOLLY: 1, PAN: 2 };\nconst TOUCH = { ROTATE: 0, PAN: 1, DOLLY_PAN: 2, DOLLY_ROTATE: 3 };\nconst CullFaceNone = 0;\nconst CullFaceBack = 1;\nconst CullFaceFront = 2;\nconst CullFaceFrontBack = 3;\nconst BasicShadowMap = 0;\nconst PCFShadowMap = 1;\nconst PCFSoftShadowMap = 2;\nconst VSMShadowMap = 3;\nconst FrontSide = 0;\nconst BackSide = 1;\nconst DoubleSide = 2;\nconst FlatShading = 1;\nconst SmoothShading = 2;\nconst NoBlending = 0;\nconst NormalBlending = 1;\nconst AdditiveBlending = 2;\nconst SubtractiveBlending = 3;\nconst MultiplyBlending = 4;\nconst CustomBlending = 5;\nconst AddEquation = 100;\nconst SubtractEquation = 101;\nconst ReverseSubtractEquation = 102;\nconst MinEquation = 103;\nconst MaxEquation = 104;\nconst ZeroFactor = 200;\nconst OneFactor = 201;\nconst SrcColorFactor = 202;\nconst OneMinusSrcColorFactor = 203;\nconst SrcAlphaFactor = 204;\nconst OneMinusSrcAlphaFactor = 205;\nconst DstAlphaFactor = 206;\nconst OneMinusDstAlphaFactor = 207;\nconst DstColorFactor = 208;\nconst OneMinusDstColorFactor = 209;\nconst SrcAlphaSaturateFactor = 210;\nconst NeverDepth = 0;\nconst AlwaysDepth = 1;\nconst LessDepth = 2;\nconst LessEqualDepth = 3;\nconst EqualDepth = 4;\nconst GreaterEqualDepth = 5;\nconst GreaterDepth = 6;\nconst NotEqualDepth = 7;\nconst MultiplyOperation = 0;\nconst MixOperation = 1;\nconst AddOperation = 2;\nconst NoToneMapping = 0;\nconst LinearToneMapping = 1;\nconst ReinhardToneMapping = 2;\nconst CineonToneMapping = 3;\nconst ACESFilmicToneMapping = 4;\nconst CustomToneMapping = 5;\n\nconst UVMapping = 300;\nconst CubeReflectionMapping = 301;\nconst CubeRefractionMapping = 302;\nconst EquirectangularReflectionMapping = 303;\nconst EquirectangularRefractionMapping = 304;\nconst CubeUVReflectionMapping = 306;\nconst CubeUVRefractionMapping = 307;\nconst RepeatWrapping = 1000;\nconst ClampToEdgeWrapping = 1001;\nconst MirroredRepeatWrapping = 1002;\nconst NearestFilter = 1003;\nconst NearestMipmapNearestFilter = 1004;\nconst NearestMipMapNearestFilter = 1004;\nconst NearestMipmapLinearFilter = 1005;\nconst NearestMipMapLinearFilter = 1005;\nconst LinearFilter = 1006;\nconst LinearMipmapNearestFilter = 1007;\nconst LinearMipMapNearestFilter = 1007;\nconst LinearMipmapLinearFilter = 1008;\nconst LinearMipMapLinearFilter = 1008;\nconst UnsignedByteType = 1009;\nconst ByteType = 1010;\nconst ShortType = 1011;\nconst UnsignedShortType = 1012;\nconst IntType = 1013;\nconst UnsignedIntType = 1014;\nconst FloatType = 1015;\nconst HalfFloatType = 1016;\nconst UnsignedShort4444Type = 1017;\nconst UnsignedShort5551Type = 1018;\nconst UnsignedShort565Type = 1019;\nconst UnsignedInt248Type = 1020;\nconst AlphaFormat = 1021;\nconst RGBFormat = 1022;\nconst RGBAFormat = 1023;\nconst LuminanceFormat = 1024;\nconst LuminanceAlphaFormat = 1025;\nconst RGBEFormat = RGBAFormat;\nconst DepthFormat = 1026;\nconst DepthStencilFormat = 1027;\nconst RedFormat = 1028;\nconst RedIntegerFormat = 1029;\nconst RGFormat = 1030;\nconst RGIntegerFormat = 1031;\nconst RGBIntegerFormat = 1032;\nconst RGBAIntegerFormat = 1033;\n\nconst RGB_S3TC_DXT1_Format = 33776;\nconst RGBA_S3TC_DXT1_Format = 33777;\nconst RGBA_S3TC_DXT3_Format = 33778;\nconst RGBA_S3TC_DXT5_Format = 33779;\nconst RGB_PVRTC_4BPPV1_Format = 35840;\nconst RGB_PVRTC_2BPPV1_Format = 35841;\nconst RGBA_PVRTC_4BPPV1_Format = 35842;\nconst RGBA_PVRTC_2BPPV1_Format = 35843;\nconst RGB_ETC1_Format = 36196;\nconst RGB_ETC2_Format = 37492;\nconst RGBA_ETC2_EAC_Format = 37496;\nconst RGBA_ASTC_4x4_Format = 37808;\nconst RGBA_ASTC_5x4_Format = 37809;\nconst RGBA_ASTC_5x5_Format = 37810;\nconst RGBA_ASTC_6x5_Format = 37811;\nconst RGBA_ASTC_6x6_Format = 37812;\nconst RGBA_ASTC_8x5_Format = 37813;\nconst RGBA_ASTC_8x6_Format = 37814;\nconst RGBA_ASTC_8x8_Format = 37815;\nconst RGBA_ASTC_10x5_Format = 37816;\nconst RGBA_ASTC_10x6_Format = 37817;\nconst RGBA_ASTC_10x8_Format = 37818;\nconst RGBA_ASTC_10x10_Format = 37819;\nconst RGBA_ASTC_12x10_Format = 37820;\nconst RGBA_ASTC_12x12_Format = 37821;\nconst RGBA_BPTC_Format = 36492;\nconst SRGB8_ALPHA8_ASTC_4x4_Format = 37840;\nconst SRGB8_ALPHA8_ASTC_5x4_Format = 37841;\nconst SRGB8_ALPHA8_ASTC_5x5_Format = 37842;\nconst SRGB8_ALPHA8_ASTC_6x5_Format = 37843;\nconst SRGB8_ALPHA8_ASTC_6x6_Format = 37844;\nconst SRGB8_ALPHA8_ASTC_8x5_Format = 37845;\nconst SRGB8_ALPHA8_ASTC_8x6_Format = 37846;\nconst SRGB8_ALPHA8_ASTC_8x8_Format = 37847;\nconst SRGB8_ALPHA8_ASTC_10x5_Format = 37848;\nconst SRGB8_ALPHA8_ASTC_10x6_Format = 37849;\nconst SRGB8_ALPHA8_ASTC_10x8_Format = 37850;\nconst SRGB8_ALPHA8_ASTC_10x10_Format = 37851;\nconst SRGB8_ALPHA8_ASTC_12x10_Format = 37852;\nconst SRGB8_ALPHA8_ASTC_12x12_Format = 37853;\nconst LoopOnce = 2200;\nconst LoopRepeat = 2201;\nconst LoopPingPong = 2202;\nconst InterpolateDiscrete = 2300;\nconst InterpolateLinear = 2301;\nconst InterpolateSmooth = 2302;\nconst ZeroCurvatureEnding = 2400;\nconst ZeroSlopeEnding = 2401;\nconst WrapAroundEnding = 2402;\nconst NormalAnimationBlendMode = 2500;\nconst AdditiveAnimationBlendMode = 2501;\nconst TrianglesDrawMode = 0;\nconst TriangleStripDrawMode = 1;\nconst TriangleFanDrawMode = 2;\nconst LinearEncoding = 3000;\nconst sRGBEncoding = 3001;\nconst GammaEncoding = 3007;\nconst RGBEEncoding = 3002;\nconst LogLuvEncoding = 3003;\nconst RGBM7Encoding = 3004;\nconst RGBM16Encoding = 3005;\nconst RGBDEncoding = 3006;\nconst BasicDepthPacking = 3200;\nconst RGBADepthPacking = 3201;\nconst TangentSpaceNormalMap = 0;\nconst ObjectSpaceNormalMap = 1;\n\nconst ZeroStencilOp = 0;\nconst KeepStencilOp = 7680;\nconst ReplaceStencilOp = 7681;\nconst IncrementStencilOp = 7682;\nconst DecrementStencilOp = 7683;\nconst IncrementWrapStencilOp = 34055;\nconst DecrementWrapStencilOp = 34056;\nconst InvertStencilOp = 5386;\n\nconst NeverStencilFunc = 512;\nconst LessStencilFunc = 513;\nconst EqualStencilFunc = 514;\nconst LessEqualStencilFunc = 515;\nconst GreaterStencilFunc = 516;\nconst NotEqualStencilFunc = 517;\nconst GreaterEqualStencilFunc = 518;\nconst AlwaysStencilFunc = 519;\n\nconst StaticDrawUsage = 35044;\nconst DynamicDrawUsage = 35048;\nconst StreamDrawUsage = 35040;\nconst StaticReadUsage = 35045;\nconst DynamicReadUsage = 35049;\nconst StreamReadUsage = 35041;\nconst StaticCopyUsage = 35046;\nconst DynamicCopyUsage = 35050;\nconst StreamCopyUsage = 35042;\n\nconst GLSL1 = '100';\nconst GLSL3 = '300 es';\n\n/**\n * https://github.com/mrdoob/eventdispatcher.js/\n */\n\nfunction EventDispatcher() {}\n\nObject.assign( EventDispatcher.prototype, {\n\n\taddEventListener: function ( type, listener ) {\n\n\t\tif ( this._listeners === undefined ) this._listeners = {};\n\n\t\tconst listeners = this._listeners;\n\n\t\tif ( listeners[ type ] === undefined ) {\n\n\t\t\tlisteners[ type ] = [];\n\n\t\t}\n\n\t\tif ( listeners[ type ].indexOf( listener ) === - 1 ) {\n\n\t\t\tlisteners[ type ].push( listener );\n\n\t\t}\n\n\t},\n\n\thasEventListener: function ( type, listener ) {\n\n\t\tif ( this._listeners === undefined ) return false;\n\n\t\tconst listeners = this._listeners;\n\n\t\treturn listeners[ type ] !== undefined && listeners[ type ].indexOf( listener ) !== - 1;\n\n\t},\n\n\tremoveEventListener: function ( type, listener ) {\n\n\t\tif ( this._listeners === undefined ) return;\n\n\t\tconst listeners = this._listeners;\n\t\tconst listenerArray = listeners[ type ];\n\n\t\tif ( listenerArray !== undefined ) {\n\n\t\t\tconst index = listenerArray.indexOf( listener );\n\n\t\t\tif ( index !== - 1 ) {\n\n\t\t\t\tlistenerArray.splice( index, 1 );\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\tdispatchEvent: function ( event ) {\n\n\t\tif ( this._listeners === undefined ) return;\n\n\t\tconst listeners = this._listeners;\n\t\tconst listenerArray = listeners[ event.type ];\n\n\t\tif ( listenerArray !== undefined ) {\n\n\t\t\tevent.target = this;\n\n\t\t\t// Make a copy, in case listeners are removed while iterating.\n\t\t\tconst array = listenerArray.slice( 0 );\n\n\t\t\tfor ( let i = 0, l = array.length; i < l; i ++ ) {\n\n\t\t\t\tarray[ i ].call( this, event );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n} );\n\nconst _lut = [];\n\nfor ( let i = 0; i < 256; i ++ ) {\n\n\t_lut[ i ] = ( i < 16 ? '0' : '' ) + ( i ).toString( 16 );\n\n}\n\nlet _seed = 1234567;\n\nconst MathUtils = {\n\n\tDEG2RAD: Math.PI / 180,\n\tRAD2DEG: 180 / Math.PI,\n\n\tgenerateUUID: function () {\n\n\t\t// http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript/21963136#21963136\n\n\t\tconst d0 = Math.random() * 0xffffffff | 0;\n\t\tconst d1 = Math.random() * 0xffffffff | 0;\n\t\tconst d2 = Math.random() * 0xffffffff | 0;\n\t\tconst d3 = Math.random() * 0xffffffff | 0;\n\t\tconst uuid = _lut[ d0 & 0xff ] + _lut[ d0 >> 8 & 0xff ] + _lut[ d0 >> 16 & 0xff ] + _lut[ d0 >> 24 & 0xff ] + '-' +\n\t\t\t_lut[ d1 & 0xff ] + _lut[ d1 >> 8 & 0xff ] + '-' + _lut[ d1 >> 16 & 0x0f | 0x40 ] + _lut[ d1 >> 24 & 0xff ] + '-' +\n\t\t\t_lut[ d2 & 0x3f | 0x80 ] + _lut[ d2 >> 8 & 0xff ] + '-' + _lut[ d2 >> 16 & 0xff ] + _lut[ d2 >> 24 & 0xff ] +\n\t\t\t_lut[ d3 & 0xff ] + _lut[ d3 >> 8 & 0xff ] + _lut[ d3 >> 16 & 0xff ] + _lut[ d3 >> 24 & 0xff ];\n\n\t\t// .toUpperCase() here flattens concatenated strings to save heap memory space.\n\t\treturn uuid.toUpperCase();\n\n\t},\n\n\tclamp: function ( value, min, max ) {\n\n\t\treturn Math.max( min, Math.min( max, value ) );\n\n\t},\n\n\t// compute euclidian modulo of m % n\n\t// https://en.wikipedia.org/wiki/Modulo_operation\n\n\teuclideanModulo: function ( n, m ) {\n\n\t\treturn ( ( n % m ) + m ) % m;\n\n\t},\n\n\t// Linear mapping from range <a1, a2> to range <b1, b2>\n\n\tmapLinear: function ( x, a1, a2, b1, b2 ) {\n\n\t\treturn b1 + ( x - a1 ) * ( b2 - b1 ) / ( a2 - a1 );\n\n\t},\n\n\t// https://en.wikipedia.org/wiki/Linear_interpolation\n\n\tlerp: function ( x, y, t ) {\n\n\t\treturn ( 1 - t ) * x + t * y;\n\n\t},\n\n\t// http://en.wikipedia.org/wiki/Smoothstep\n\n\tsmoothstep: function ( x, min, max ) {\n\n\t\tif ( x <= min ) return 0;\n\t\tif ( x >= max ) return 1;\n\n\t\tx = ( x - min ) / ( max - min );\n\n\t\treturn x * x * ( 3 - 2 * x );\n\n\t},\n\n\tsmootherstep: function ( x, min, max ) {\n\n\t\tif ( x <= min ) return 0;\n\t\tif ( x >= max ) return 1;\n\n\t\tx = ( x - min ) / ( max - min );\n\n\t\treturn x * x * x * ( x * ( x * 6 - 15 ) + 10 );\n\n\t},\n\n\t// Random integer from <low, high> interval\n\n\trandInt: function ( low, high ) {\n\n\t\treturn low + Math.floor( Math.random() * ( high - low + 1 ) );\n\n\t},\n\n\t// Random float from <low, high> interval\n\n\trandFloat: function ( low, high ) {\n\n\t\treturn low + Math.random() * ( high - low );\n\n\t},\n\n\t// Random float from <-range/2, range/2> interval\n\n\trandFloatSpread: function ( range ) {\n\n\t\treturn range * ( 0.5 - Math.random() );\n\n\t},\n\n\t// Deterministic pseudo-random float in the interval [ 0, 1 ]\n\n\tseededRandom: function ( s ) {\n\n\t\tif ( s !== undefined ) _seed = s % 2147483647;\n\n\t\t// Park-Miller algorithm\n\n\t\t_seed = _seed * 16807 % 2147483647;\n\n\t\treturn ( _seed - 1 ) / 2147483646;\n\n\t},\n\n\tdegToRad: function ( degrees ) {\n\n\t\treturn degrees * MathUtils.DEG2RAD;\n\n\t},\n\n\tradToDeg: function ( radians ) {\n\n\t\treturn radians * MathUtils.RAD2DEG;\n\n\t},\n\n\tisPowerOfTwo: function ( value ) {\n\n\t\treturn ( value & ( value - 1 ) ) === 0 && value !== 0;\n\n\t},\n\n\tceilPowerOfTwo: function ( value ) {\n\n\t\treturn Math.pow( 2, Math.ceil( Math.log( value ) / Math.LN2 ) );\n\n\t},\n\n\tfloorPowerOfTwo: function ( value ) {\n\n\t\treturn Math.pow( 2, Math.floor( Math.log( value ) / Math.LN2 ) );\n\n\t},\n\n\tsetQuaternionFromProperEuler: function ( q, a, b, c, order ) {\n\n\t\t// Intrinsic Proper Euler Angles - see https://en.wikipedia.org/wiki/Euler_angles\n\n\t\t// rotations are applied to the axes in the order specified by 'order'\n\t\t// rotation by angle 'a' is applied first, then by angle 'b', then by angle 'c'\n\t\t// angles are in radians\n\n\t\tconst cos = Math.cos;\n\t\tconst sin = Math.sin;\n\n\t\tconst c2 = cos( b / 2 );\n\t\tconst s2 = sin( b / 2 );\n\n\t\tconst c13 = cos( ( a + c ) / 2 );\n\t\tconst s13 = sin( ( a + c ) / 2 );\n\n\t\tconst c1_3 = cos( ( a - c ) / 2 );\n\t\tconst s1_3 = sin( ( a - c ) / 2 );\n\n\t\tconst c3_1 = cos( ( c - a ) / 2 );\n\t\tconst s3_1 = sin( ( c - a ) / 2 );\n\n\t\tswitch ( order ) {\n\n\t\t\tcase 'XYX':\n\t\t\t\tq.set( c2 * s13, s2 * c1_3, s2 * s1_3, c2 * c13 );\n\t\t\t\tbreak;\n\n\t\t\tcase 'YZY':\n\t\t\t\tq.set( s2 * s1_3, c2 * s13, s2 * c1_3, c2 * c13 );\n\t\t\t\tbreak;\n\n\t\t\tcase 'ZXZ':\n\t\t\t\tq.set( s2 * c1_3, s2 * s1_3, c2 * s13, c2 * c13 );\n\t\t\t\tbreak;\n\n\t\t\tcase 'XZX':\n\t\t\t\tq.set( c2 * s13, s2 * s3_1, s2 * c3_1, c2 * c13 );\n\t\t\t\tbreak;\n\n\t\t\tcase 'YXY':\n\t\t\t\tq.set( s2 * c3_1, c2 * s13, s2 * s3_1, c2 * c13 );\n\t\t\t\tbreak;\n\n\t\t\tcase 'ZYZ':\n\t\t\t\tq.set( s2 * s3_1, s2 * c3_1, c2 * s13, c2 * c13 );\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\t\t\t\tconsole.warn( 'THREE.MathUtils: .setQuaternionFromProperEuler() encountered an unknown order: ' + order );\n\n\t\t}\n\n\t}\n\n};\n\nclass Vector2 {\n\n\tconstructor( x = 0, y = 0 ) {\n\n\t\tObject.defineProperty( this, 'isVector2', { value: true } );\n\n\t\tthis.x = x;\n\t\tthis.y = y;\n\n\t}\n\n\tget width() {\n\n\t\treturn this.x;\n\n\t}\n\n\tset width( value ) {\n\n\t\tthis.x = value;\n\n\t}\n\n\tget height() {\n\n\t\treturn this.y;\n\n\t}\n\n\tset height( value ) {\n\n\t\tthis.y = value;\n\n\t}\n\n\tset( x, y ) {\n\n\t\tthis.x = x;\n\t\tthis.y = y;\n\n\t\treturn this;\n\n\t}\n\n\tsetScalar( scalar ) {\n\n\t\tthis.x = scalar;\n\t\tthis.y = scalar;\n\n\t\treturn this;\n\n\t}\n\n\tsetX( x ) {\n\n\t\tthis.x = x;\n\n\t\treturn this;\n\n\t}\n\n\tsetY( y ) {\n\n\t\tthis.y = y;\n\n\t\treturn this;\n\n\t}\n\n\tsetComponent( index, value ) {\n\n\t\tswitch ( index ) {\n\n\t\t\tcase 0: this.x = value; break;\n\t\t\tcase 1: this.y = value; break;\n\t\t\tdefault: throw new Error( 'index is out of range: ' + index );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tgetComponent( index ) {\n\n\t\tswitch ( index ) {\n\n\t\t\tcase 0: return this.x;\n\t\t\tcase 1: return this.y;\n\t\t\tdefault: throw new Error( 'index is out of range: ' + index );\n\n\t\t}\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor( this.x, this.y );\n\n\t}\n\n\tcopy( v ) {\n\n\t\tthis.x = v.x;\n\t\tthis.y = v.y;\n\n\t\treturn this;\n\n\t}\n\n\tadd( v, w ) {\n\n\t\tif ( w !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Vector2: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );\n\t\t\treturn this.addVectors( v, w );\n\n\t\t}\n\n\t\tthis.x += v.x;\n\t\tthis.y += v.y;\n\n\t\treturn this;\n\n\t}\n\n\taddScalar( s ) {\n\n\t\tthis.x += s;\n\t\tthis.y += s;\n\n\t\treturn this;\n\n\t}\n\n\taddVectors( a, b ) {\n\n\t\tthis.x = a.x + b.x;\n\t\tthis.y = a.y + b.y;\n\n\t\treturn this;\n\n\t}\n\n\taddScaledVector( v, s ) {\n\n\t\tthis.x += v.x * s;\n\t\tthis.y += v.y * s;\n\n\t\treturn this;\n\n\t}\n\n\tsub( v, w ) {\n\n\t\tif ( w !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Vector2: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );\n\t\t\treturn this.subVectors( v, w );\n\n\t\t}\n\n\t\tthis.x -= v.x;\n\t\tthis.y -= v.y;\n\n\t\treturn this;\n\n\t}\n\n\tsubScalar( s ) {\n\n\t\tthis.x -= s;\n\t\tthis.y -= s;\n\n\t\treturn this;\n\n\t}\n\n\tsubVectors( a, b ) {\n\n\t\tthis.x = a.x - b.x;\n\t\tthis.y = a.y - b.y;\n\n\t\treturn this;\n\n\t}\n\n\tmultiply( v ) {\n\n\t\tthis.x *= v.x;\n\t\tthis.y *= v.y;\n\n\t\treturn this;\n\n\t}\n\n\tmultiplyScalar( scalar ) {\n\n\t\tthis.x *= scalar;\n\t\tthis.y *= scalar;\n\n\t\treturn this;\n\n\t}\n\n\tdivide( v ) {\n\n\t\tthis.x /= v.x;\n\t\tthis.y /= v.y;\n\n\t\treturn this;\n\n\t}\n\n\tdivideScalar( scalar ) {\n\n\t\treturn this.multiplyScalar( 1 / scalar );\n\n\t}\n\n\tapplyMatrix3( m ) {\n\n\t\tconst x = this.x, y = this.y;\n\t\tconst e = m.elements;\n\n\t\tthis.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ];\n\t\tthis.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ];\n\n\t\treturn this;\n\n\t}\n\n\tmin( v ) {\n\n\t\tthis.x = Math.min( this.x, v.x );\n\t\tthis.y = Math.min( this.y, v.y );\n\n\t\treturn this;\n\n\t}\n\n\tmax( v ) {\n\n\t\tthis.x = Math.max( this.x, v.x );\n\t\tthis.y = Math.max( this.y, v.y );\n\n\t\treturn this;\n\n\t}\n\n\tclamp( min, max ) {\n\n\t\t// assumes min < max, componentwise\n\n\t\tthis.x = Math.max( min.x, Math.min( max.x, this.x ) );\n\t\tthis.y = Math.max( min.y, Math.min( max.y, this.y ) );\n\n\t\treturn this;\n\n\t}\n\n\tclampScalar( minVal, maxVal ) {\n\n\t\tthis.x = Math.max( minVal, Math.min( maxVal, this.x ) );\n\t\tthis.y = Math.max( minVal, Math.min( maxVal, this.y ) );\n\n\t\treturn this;\n\n\t}\n\n\tclampLength( min, max ) {\n\n\t\tconst length = this.length();\n\n\t\treturn this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );\n\n\t}\n\n\tfloor() {\n\n\t\tthis.x = Math.floor( this.x );\n\t\tthis.y = Math.floor( this.y );\n\n\t\treturn this;\n\n\t}\n\n\tceil() {\n\n\t\tthis.x = Math.ceil( this.x );\n\t\tthis.y = Math.ceil( this.y );\n\n\t\treturn this;\n\n\t}\n\n\tround() {\n\n\t\tthis.x = Math.round( this.x );\n\t\tthis.y = Math.round( this.y );\n\n\t\treturn this;\n\n\t}\n\n\troundToZero() {\n\n\t\tthis.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );\n\t\tthis.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );\n\n\t\treturn this;\n\n\t}\n\n\tnegate() {\n\n\t\tthis.x = - this.x;\n\t\tthis.y = - this.y;\n\n\t\treturn this;\n\n\t}\n\n\tdot( v ) {\n\n\t\treturn this.x * v.x + this.y * v.y;\n\n\t}\n\n\tcross( v ) {\n\n\t\treturn this.x * v.y - this.y * v.x;\n\n\t}\n\n\tlengthSq() {\n\n\t\treturn this.x * this.x + this.y * this.y;\n\n\t}\n\n\tlength() {\n\n\t\treturn Math.sqrt( this.x * this.x + this.y * this.y );\n\n\t}\n\n\tmanhattanLength() {\n\n\t\treturn Math.abs( this.x ) + Math.abs( this.y );\n\n\t}\n\n\tnormalize() {\n\n\t\treturn this.divideScalar( this.length() || 1 );\n\n\t}\n\n\tangle() {\n\n\t\t// computes the angle in radians with respect to the positive x-axis\n\n\t\tconst angle = Math.atan2( - this.y, - this.x ) + Math.PI;\n\n\t\treturn angle;\n\n\t}\n\n\tdistanceTo( v ) {\n\n\t\treturn Math.sqrt( this.distanceToSquared( v ) );\n\n\t}\n\n\tdistanceToSquared( v ) {\n\n\t\tconst dx = this.x - v.x, dy = this.y - v.y;\n\t\treturn dx * dx + dy * dy;\n\n\t}\n\n\tmanhattanDistanceTo( v ) {\n\n\t\treturn Math.abs( this.x - v.x ) + Math.abs( this.y - v.y );\n\n\t}\n\n\tsetLength( length ) {\n\n\t\treturn this.normalize().multiplyScalar( length );\n\n\t}\n\n\tlerp( v, alpha ) {\n\n\t\tthis.x += ( v.x - this.x ) * alpha;\n\t\tthis.y += ( v.y - this.y ) * alpha;\n\n\t\treturn this;\n\n\t}\n\n\tlerpVectors( v1, v2, alpha ) {\n\n\t\tthis.x = v1.x + ( v2.x - v1.x ) * alpha;\n\t\tthis.y = v1.y + ( v2.y - v1.y ) * alpha;\n\n\t\treturn this;\n\n\t}\n\n\tequals( v ) {\n\n\t\treturn ( ( v.x === this.x ) && ( v.y === this.y ) );\n\n\t}\n\n\tfromArray( array, offset = 0 ) {\n\n\t\tthis.x = array[ offset ];\n\t\tthis.y = array[ offset + 1 ];\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tarray[ offset ] = this.x;\n\t\tarray[ offset + 1 ] = this.y;\n\n\t\treturn array;\n\n\t}\n\n\tfromBufferAttribute( attribute, index, offset ) {\n\n\t\tif ( offset !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Vector2: offset has been removed from .fromBufferAttribute().' );\n\n\t\t}\n\n\t\tthis.x = attribute.getX( index );\n\t\tthis.y = attribute.getY( index );\n\n\t\treturn this;\n\n\t}\n\n\trotateAround( center, angle ) {\n\n\t\tconst c = Math.cos( angle ), s = Math.sin( angle );\n\n\t\tconst x = this.x - center.x;\n\t\tconst y = this.y - center.y;\n\n\t\tthis.x = x * c - y * s + center.x;\n\t\tthis.y = x * s + y * c + center.y;\n\n\t\treturn this;\n\n\t}\n\n\trandom() {\n\n\t\tthis.x = Math.random();\n\t\tthis.y = Math.random();\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass Matrix3 {\n\n\tconstructor() {\n\n\t\tObject.defineProperty( this, 'isMatrix3', { value: true } );\n\n\t\tthis.elements = [\n\n\t\t\t1, 0, 0,\n\t\t\t0, 1, 0,\n\t\t\t0, 0, 1\n\n\t\t];\n\n\t\tif ( arguments.length > 0 ) {\n\n\t\t\tconsole.error( 'THREE.Matrix3: the constructor no longer reads arguments. use .set() instead.' );\n\n\t\t}\n\n\t}\n\n\tset( n11, n12, n13, n21, n22, n23, n31, n32, n33 ) {\n\n\t\tconst te = this.elements;\n\n\t\tte[ 0 ] = n11; te[ 1 ] = n21; te[ 2 ] = n31;\n\t\tte[ 3 ] = n12; te[ 4 ] = n22; te[ 5 ] = n32;\n\t\tte[ 6 ] = n13; te[ 7 ] = n23; te[ 8 ] = n33;\n\n\t\treturn this;\n\n\t}\n\n\tidentity() {\n\n\t\tthis.set(\n\n\t\t\t1, 0, 0,\n\t\t\t0, 1, 0,\n\t\t\t0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().fromArray( this.elements );\n\n\t}\n\n\tcopy( m ) {\n\n\t\tconst te = this.elements;\n\t\tconst me = m.elements;\n\n\t\tte[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ];\n\t\tte[ 3 ] = me[ 3 ]; te[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ];\n\t\tte[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ]; te[ 8 ] = me[ 8 ];\n\n\t\treturn this;\n\n\t}\n\n\textractBasis( xAxis, yAxis, zAxis ) {\n\n\t\txAxis.setFromMatrix3Column( this, 0 );\n\t\tyAxis.setFromMatrix3Column( this, 1 );\n\t\tzAxis.setFromMatrix3Column( this, 2 );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromMatrix4( m ) {\n\n\t\tconst me = m.elements;\n\n\t\tthis.set(\n\n\t\t\tme[ 0 ], me[ 4 ], me[ 8 ],\n\t\t\tme[ 1 ], me[ 5 ], me[ 9 ],\n\t\t\tme[ 2 ], me[ 6 ], me[ 10 ]\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tmultiply( m ) {\n\n\t\treturn this.multiplyMatrices( this, m );\n\n\t}\n\n\tpremultiply( m ) {\n\n\t\treturn this.multiplyMatrices( m, this );\n\n\t}\n\n\tmultiplyMatrices( a, b ) {\n\n\t\tconst ae = a.elements;\n\t\tconst be = b.elements;\n\t\tconst te = this.elements;\n\n\t\tconst a11 = ae[ 0 ], a12 = ae[ 3 ], a13 = ae[ 6 ];\n\t\tconst a21 = ae[ 1 ], a22 = ae[ 4 ], a23 = ae[ 7 ];\n\t\tconst a31 = ae[ 2 ], a32 = ae[ 5 ], a33 = ae[ 8 ];\n\n\t\tconst b11 = be[ 0 ], b12 = be[ 3 ], b13 = be[ 6 ];\n\t\tconst b21 = be[ 1 ], b22 = be[ 4 ], b23 = be[ 7 ];\n\t\tconst b31 = be[ 2 ], b32 = be[ 5 ], b33 = be[ 8 ];\n\n\t\tte[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31;\n\t\tte[ 3 ] = a11 * b12 + a12 * b22 + a13 * b32;\n\t\tte[ 6 ] = a11 * b13 + a12 * b23 + a13 * b33;\n\n\t\tte[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31;\n\t\tte[ 4 ] = a21 * b12 + a22 * b22 + a23 * b32;\n\t\tte[ 7 ] = a21 * b13 + a22 * b23 + a23 * b33;\n\n\t\tte[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31;\n\t\tte[ 5 ] = a31 * b12 + a32 * b22 + a33 * b32;\n\t\tte[ 8 ] = a31 * b13 + a32 * b23 + a33 * b33;\n\n\t\treturn this;\n\n\t}\n\n\tmultiplyScalar( s ) {\n\n\t\tconst te = this.elements;\n\n\t\tte[ 0 ] *= s; te[ 3 ] *= s; te[ 6 ] *= s;\n\t\tte[ 1 ] *= s; te[ 4 ] *= s; te[ 7 ] *= s;\n\t\tte[ 2 ] *= s; te[ 5 ] *= s; te[ 8 ] *= s;\n\n\t\treturn this;\n\n\t}\n\n\tdeterminant() {\n\n\t\tconst te = this.elements;\n\n\t\tconst a = te[ 0 ], b = te[ 1 ], c = te[ 2 ],\n\t\t\td = te[ 3 ], e = te[ 4 ], f = te[ 5 ],\n\t\t\tg = te[ 6 ], h = te[ 7 ], i = te[ 8 ];\n\n\t\treturn a * e * i - a * f * h - b * d * i + b * f * g + c * d * h - c * e * g;\n\n\t}\n\n\tinvert() {\n\n\t\tconst te = this.elements,\n\n\t\t\tn11 = te[ 0 ], n21 = te[ 1 ], n31 = te[ 2 ],\n\t\t\tn12 = te[ 3 ], n22 = te[ 4 ], n32 = te[ 5 ],\n\t\t\tn13 = te[ 6 ], n23 = te[ 7 ], n33 = te[ 8 ],\n\n\t\t\tt11 = n33 * n22 - n32 * n23,\n\t\t\tt12 = n32 * n13 - n33 * n12,\n\t\t\tt13 = n23 * n12 - n22 * n13,\n\n\t\t\tdet = n11 * t11 + n21 * t12 + n31 * t13;\n\n\t\tif ( det === 0 ) return this.set( 0, 0, 0, 0, 0, 0, 0, 0, 0 );\n\n\t\tconst detInv = 1 / det;\n\n\t\tte[ 0 ] = t11 * detInv;\n\t\tte[ 1 ] = ( n31 * n23 - n33 * n21 ) * detInv;\n\t\tte[ 2 ] = ( n32 * n21 - n31 * n22 ) * detInv;\n\n\t\tte[ 3 ] = t12 * detInv;\n\t\tte[ 4 ] = ( n33 * n11 - n31 * n13 ) * detInv;\n\t\tte[ 5 ] = ( n31 * n12 - n32 * n11 ) * detInv;\n\n\t\tte[ 6 ] = t13 * detInv;\n\t\tte[ 7 ] = ( n21 * n13 - n23 * n11 ) * detInv;\n\t\tte[ 8 ] = ( n22 * n11 - n21 * n12 ) * detInv;\n\n\t\treturn this;\n\n\t}\n\n\ttranspose() {\n\n\t\tlet tmp;\n\t\tconst m = this.elements;\n\n\t\ttmp = m[ 1 ]; m[ 1 ] = m[ 3 ]; m[ 3 ] = tmp;\n\t\ttmp = m[ 2 ]; m[ 2 ] = m[ 6 ]; m[ 6 ] = tmp;\n\t\ttmp = m[ 5 ]; m[ 5 ] = m[ 7 ]; m[ 7 ] = tmp;\n\n\t\treturn this;\n\n\t}\n\n\tgetNormalMatrix( matrix4 ) {\n\n\t\treturn this.setFromMatrix4( matrix4 ).copy( this ).invert().transpose();\n\n\t}\n\n\ttransposeIntoArray( r ) {\n\n\t\tconst m = this.elements;\n\n\t\tr[ 0 ] = m[ 0 ];\n\t\tr[ 1 ] = m[ 3 ];\n\t\tr[ 2 ] = m[ 6 ];\n\t\tr[ 3 ] = m[ 1 ];\n\t\tr[ 4 ] = m[ 4 ];\n\t\tr[ 5 ] = m[ 7 ];\n\t\tr[ 6 ] = m[ 2 ];\n\t\tr[ 7 ] = m[ 5 ];\n\t\tr[ 8 ] = m[ 8 ];\n\n\t\treturn this;\n\n\t}\n\n\tsetUvTransform( tx, ty, sx, sy, rotation, cx, cy ) {\n\n\t\tconst c = Math.cos( rotation );\n\t\tconst s = Math.sin( rotation );\n\n\t\tthis.set(\n\t\t\tsx * c, sx * s, - sx * ( c * cx + s * cy ) + cx + tx,\n\t\t\t- sy * s, sy * c, - sy * ( - s * cx + c * cy ) + cy + ty,\n\t\t\t0, 0, 1\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tscale( sx, sy ) {\n\n\t\tconst te = this.elements;\n\n\t\tte[ 0 ] *= sx; te[ 3 ] *= sx; te[ 6 ] *= sx;\n\t\tte[ 1 ] *= sy; te[ 4 ] *= sy; te[ 7 ] *= sy;\n\n\t\treturn this;\n\n\t}\n\n\trotate( theta ) {\n\n\t\tconst c = Math.cos( theta );\n\t\tconst s = Math.sin( theta );\n\n\t\tconst te = this.elements;\n\n\t\tconst a11 = te[ 0 ], a12 = te[ 3 ], a13 = te[ 6 ];\n\t\tconst a21 = te[ 1 ], a22 = te[ 4 ], a23 = te[ 7 ];\n\n\t\tte[ 0 ] = c * a11 + s * a21;\n\t\tte[ 3 ] = c * a12 + s * a22;\n\t\tte[ 6 ] = c * a13 + s * a23;\n\n\t\tte[ 1 ] = - s * a11 + c * a21;\n\t\tte[ 4 ] = - s * a12 + c * a22;\n\t\tte[ 7 ] = - s * a13 + c * a23;\n\n\t\treturn this;\n\n\t}\n\n\ttranslate( tx, ty ) {\n\n\t\tconst te = this.elements;\n\n\t\tte[ 0 ] += tx * te[ 2 ]; te[ 3 ] += tx * te[ 5 ]; te[ 6 ] += tx * te[ 8 ];\n\t\tte[ 1 ] += ty * te[ 2 ]; te[ 4 ] += ty * te[ 5 ]; te[ 7 ] += ty * te[ 8 ];\n\n\t\treturn this;\n\n\t}\n\n\tequals( matrix ) {\n\n\t\tconst te = this.elements;\n\t\tconst me = matrix.elements;\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tif ( te[ i ] !== me[ i ] ) return false;\n\n\t\t}\n\n\t\treturn true;\n\n\t}\n\n\tfromArray( array, offset = 0 ) {\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tthis.elements[ i ] = array[ i + offset ];\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tconst te = this.elements;\n\n\t\tarray[ offset ] = te[ 0 ];\n\t\tarray[ offset + 1 ] = te[ 1 ];\n\t\tarray[ offset + 2 ] = te[ 2 ];\n\n\t\tarray[ offset + 3 ] = te[ 3 ];\n\t\tarray[ offset + 4 ] = te[ 4 ];\n\t\tarray[ offset + 5 ] = te[ 5 ];\n\n\t\tarray[ offset + 6 ] = te[ 6 ];\n\t\tarray[ offset + 7 ] = te[ 7 ];\n\t\tarray[ offset + 8 ] = te[ 8 ];\n\n\t\treturn array;\n\n\t}\n\n}\n\nlet _canvas;\n\nconst ImageUtils = {\n\n\tgetDataURL: function ( image ) {\n\n\t\tif ( /^data:/i.test( image.src ) ) {\n\n\t\t\treturn image.src;\n\n\t\t}\n\n\t\tif ( typeof HTMLCanvasElement == 'undefined' ) {\n\n\t\t\treturn image.src;\n\n\t\t}\n\n\t\tlet canvas;\n\n\t\tif ( image instanceof HTMLCanvasElement ) {\n\n\t\t\tcanvas = image;\n\n\t\t} else {\n\n\t\t\tif ( _canvas === undefined ) _canvas = document.createElementNS( 'http://www.w3.org/1999/xhtml', 'canvas' );\n\n\t\t\t_canvas.width = image.width;\n\t\t\t_canvas.height = image.height;\n\n\t\t\tconst context = _canvas.getContext( '2d' );\n\n\t\t\tif ( image instanceof ImageData ) {\n\n\t\t\t\tcontext.putImageData( image, 0, 0 );\n\n\t\t\t} else {\n\n\t\t\t\tcontext.drawImage( image, 0, 0, image.width, image.height );\n\n\t\t\t}\n\n\t\t\tcanvas = _canvas;\n\n\t\t}\n\n\t\tif ( canvas.width > 2048 || canvas.height > 2048 ) {\n\n\t\t\treturn canvas.toDataURL( 'image/jpeg', 0.6 );\n\n\t\t} else {\n\n\t\t\treturn canvas.toDataURL( 'image/png' );\n\n\t\t}\n\n\t}\n\n};\n\nlet textureId = 0;\n\nfunction Texture( image = Texture.DEFAULT_IMAGE, mapping = Texture.DEFAULT_MAPPING, wrapS = ClampToEdgeWrapping, wrapT = ClampToEdgeWrapping, magFilter = LinearFilter, minFilter = LinearMipmapLinearFilter, format = RGBAFormat, type = UnsignedByteType, anisotropy = 1, encoding = LinearEncoding ) {\n\n\tObject.defineProperty( this, 'id', { value: textureId ++ } );\n\n\tthis.uuid = MathUtils.generateUUID();\n\n\tthis.name = '';\n\n\tthis.image = image;\n\tthis.mipmaps = [];\n\n\tthis.mapping = mapping;\n\n\tthis.wrapS = wrapS;\n\tthis.wrapT = wrapT;\n\n\tthis.magFilter = magFilter;\n\tthis.minFilter = minFilter;\n\n\tthis.anisotropy = anisotropy;\n\n\tthis.format = format;\n\tthis.internalFormat = null;\n\tthis.type = type;\n\n\tthis.offset = new Vector2( 0, 0 );\n\tthis.repeat = new Vector2( 1, 1 );\n\tthis.center = new Vector2( 0, 0 );\n\tthis.rotation = 0;\n\n\tthis.matrixAutoUpdate = true;\n\tthis.matrix = new Matrix3();\n\n\tthis.generateMipmaps = true;\n\tthis.premultiplyAlpha = false;\n\tthis.flipY = true;\n\tthis.unpackAlignment = 4;\t// valid values: 1, 2, 4, 8 (see http://www.khronos.org/opengles/sdk/docs/man/xhtml/glPixelStorei.xml)\n\n\t// Values of encoding !== THREE.LinearEncoding only supported on map, envMap and emissiveMap.\n\t//\n\t// Also changing the encoding after already used by a Material will not automatically make the Material\n\t// update. You need to explicitly call Material.needsUpdate to trigger it to recompile.\n\tthis.encoding = encoding;\n\n\tthis.version = 0;\n\tthis.onUpdate = null;\n\n}\n\nTexture.DEFAULT_IMAGE = undefined;\nTexture.DEFAULT_MAPPING = UVMapping;\n\nTexture.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {\n\n\tconstructor: Texture,\n\n\tisTexture: true,\n\n\tupdateMatrix: function () {\n\n\t\tthis.matrix.setUvTransform( this.offset.x, this.offset.y, this.repeat.x, this.repeat.y, this.rotation, this.center.x, this.center.y );\n\n\t},\n\n\tclone: function () {\n\n\t\treturn new this.constructor().copy( this );\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\tthis.name = source.name;\n\n\t\tthis.image = source.image;\n\t\tthis.mipmaps = source.mipmaps.slice( 0 );\n\n\t\tthis.mapping = source.mapping;\n\n\t\tthis.wrapS = source.wrapS;\n\t\tthis.wrapT = source.wrapT;\n\n\t\tthis.magFilter = source.magFilter;\n\t\tthis.minFilter = source.minFilter;\n\n\t\tthis.anisotropy = source.anisotropy;\n\n\t\tthis.format = source.format;\n\t\tthis.internalFormat = source.internalFormat;\n\t\tthis.type = source.type;\n\n\t\tthis.offset.copy( source.offset );\n\t\tthis.repeat.copy( source.repeat );\n\t\tthis.center.copy( source.center );\n\t\tthis.rotation = source.rotation;\n\n\t\tthis.matrixAutoUpdate = source.matrixAutoUpdate;\n\t\tthis.matrix.copy( source.matrix );\n\n\t\tthis.generateMipmaps = source.generateMipmaps;\n\t\tthis.premultiplyAlpha = source.premultiplyAlpha;\n\t\tthis.flipY = source.flipY;\n\t\tthis.unpackAlignment = source.unpackAlignment;\n\t\tthis.encoding = source.encoding;\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function ( meta ) {\n\n\t\tconst isRootObject = ( meta === undefined || typeof meta === 'string' );\n\n\t\tif ( ! isRootObject && meta.textures[ this.uuid ] !== undefined ) {\n\n\t\t\treturn meta.textures[ this.uuid ];\n\n\t\t}\n\n\t\tconst output = {\n\n\t\t\tmetadata: {\n\t\t\t\tversion: 4.5,\n\t\t\t\ttype: 'Texture',\n\t\t\t\tgenerator: 'Texture.toJSON'\n\t\t\t},\n\n\t\t\tuuid: this.uuid,\n\t\t\tname: this.name,\n\n\t\t\tmapping: this.mapping,\n\n\t\t\trepeat: [ this.repeat.x, this.repeat.y ],\n\t\t\toffset: [ this.offset.x, this.offset.y ],\n\t\t\tcenter: [ this.center.x, this.center.y ],\n\t\t\trotation: this.rotation,\n\n\t\t\twrap: [ this.wrapS, this.wrapT ],\n\n\t\t\tformat: this.format,\n\t\t\ttype: this.type,\n\t\t\tencoding: this.encoding,\n\n\t\t\tminFilter: this.minFilter,\n\t\t\tmagFilter: this.magFilter,\n\t\t\tanisotropy: this.anisotropy,\n\n\t\t\tflipY: this.flipY,\n\n\t\t\tpremultiplyAlpha: this.premultiplyAlpha,\n\t\t\tunpackAlignment: this.unpackAlignment\n\n\t\t};\n\n\t\tif ( this.image !== undefined ) {\n\n\t\t\t// TODO: Move to THREE.Image\n\n\t\t\tconst image = this.image;\n\n\t\t\tif ( image.uuid === undefined ) {\n\n\t\t\t\timage.uuid = MathUtils.generateUUID(); // UGH\n\n\t\t\t}\n\n\t\t\tif ( ! isRootObject && meta.images[ image.uuid ] === undefined ) {\n\n\t\t\t\tlet url;\n\n\t\t\t\tif ( Array.isArray( image ) ) {\n\n\t\t\t\t\t// process array of images e.g. CubeTexture\n\n\t\t\t\t\turl = [];\n\n\t\t\t\t\tfor ( let i = 0, l = image.length; i < l; i ++ ) {\n\n\t\t\t\t\t\t// check cube texture with data textures\n\n\t\t\t\t\t\tif ( image[ i ].isDataTexture ) {\n\n\t\t\t\t\t\t\turl.push( serializeImage( image[ i ].image ) );\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\turl.push( serializeImage( image[ i ] ) );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// process single image\n\n\t\t\t\t\turl = serializeImage( image );\n\n\t\t\t\t}\n\n\t\t\t\tmeta.images[ image.uuid ] = {\n\t\t\t\t\tuuid: image.uuid,\n\t\t\t\t\turl: url\n\t\t\t\t};\n\n\t\t\t}\n\n\t\t\toutput.image = image.uuid;\n\n\t\t}\n\n\t\tif ( ! isRootObject ) {\n\n\t\t\tmeta.textures[ this.uuid ] = output;\n\n\t\t}\n\n\t\treturn output;\n\n\t},\n\n\tdispose: function () {\n\n\t\tthis.dispatchEvent( { type: 'dispose' } );\n\n\t},\n\n\ttransformUv: function ( uv ) {\n\n\t\tif ( this.mapping !== UVMapping ) return uv;\n\n\t\tuv.applyMatrix3( this.matrix );\n\n\t\tif ( uv.x < 0 || uv.x > 1 ) {\n\n\t\t\tswitch ( this.wrapS ) {\n\n\t\t\t\tcase RepeatWrapping:\n\n\t\t\t\t\tuv.x = uv.x - Math.floor( uv.x );\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase ClampToEdgeWrapping:\n\n\t\t\t\t\tuv.x = uv.x < 0 ? 0 : 1;\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase MirroredRepeatWrapping:\n\n\t\t\t\t\tif ( Math.abs( Math.floor( uv.x ) % 2 ) === 1 ) {\n\n\t\t\t\t\t\tuv.x = Math.ceil( uv.x ) - uv.x;\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tuv.x = uv.x - Math.floor( uv.x );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( uv.y < 0 || uv.y > 1 ) {\n\n\t\t\tswitch ( this.wrapT ) {\n\n\t\t\t\tcase RepeatWrapping:\n\n\t\t\t\t\tuv.y = uv.y - Math.floor( uv.y );\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase ClampToEdgeWrapping:\n\n\t\t\t\t\tuv.y = uv.y < 0 ? 0 : 1;\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase MirroredRepeatWrapping:\n\n\t\t\t\t\tif ( Math.abs( Math.floor( uv.y ) % 2 ) === 1 ) {\n\n\t\t\t\t\t\tuv.y = Math.ceil( uv.y ) - uv.y;\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tuv.y = uv.y - Math.floor( uv.y );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( this.flipY ) {\n\n\t\t\tuv.y = 1 - uv.y;\n\n\t\t}\n\n\t\treturn uv;\n\n\t}\n\n} );\n\nObject.defineProperty( Texture.prototype, 'needsUpdate', {\n\n\tset: function ( value ) {\n\n\t\tif ( value === true ) this.version ++;\n\n\t}\n\n} );\n\nfunction serializeImage( image ) {\n\n\tif ( ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) ||\n\t\t( typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement ) ||\n\t\t( typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap ) ) {\n\n\t\t// default images\n\n\t\treturn ImageUtils.getDataURL( image );\n\n\t} else {\n\n\t\tif ( image.data ) {\n\n\t\t\t// images of DataTexture\n\n\t\t\treturn {\n\t\t\t\tdata: Array.prototype.slice.call( image.data ),\n\t\t\t\twidth: image.width,\n\t\t\t\theight: image.height,\n\t\t\t\ttype: image.data.constructor.name\n\t\t\t};\n\n\t\t} else {\n\n\t\t\tconsole.warn( 'THREE.Texture: Unable to serialize Texture.' );\n\t\t\treturn {};\n\n\t\t}\n\n\t}\n\n}\n\nclass Vector4 {\n\n\tconstructor( x = 0, y = 0, z = 0, w = 1 ) {\n\n\t\tObject.defineProperty( this, 'isVector4', { value: true } );\n\n\t\tthis.x = x;\n\t\tthis.y = y;\n\t\tthis.z = z;\n\t\tthis.w = w;\n\n\t}\n\n\tget width() {\n\n\t\treturn this.z;\n\n\t}\n\n\tset width( value ) {\n\n\t\tthis.z = value;\n\n\t}\n\n\tget height() {\n\n\t\treturn this.w;\n\n\t}\n\n\tset height( value ) {\n\n\t\tthis.w = value;\n\n\t}\n\n\tset( x, y, z, w ) {\n\n\t\tthis.x = x;\n\t\tthis.y = y;\n\t\tthis.z = z;\n\t\tthis.w = w;\n\n\t\treturn this;\n\n\t}\n\n\tsetScalar( scalar ) {\n\n\t\tthis.x = scalar;\n\t\tthis.y = scalar;\n\t\tthis.z = scalar;\n\t\tthis.w = scalar;\n\n\t\treturn this;\n\n\t}\n\n\tsetX( x ) {\n\n\t\tthis.x = x;\n\n\t\treturn this;\n\n\t}\n\n\tsetY( y ) {\n\n\t\tthis.y = y;\n\n\t\treturn this;\n\n\t}\n\n\tsetZ( z ) {\n\n\t\tthis.z = z;\n\n\t\treturn this;\n\n\t}\n\n\tsetW( w ) {\n\n\t\tthis.w = w;\n\n\t\treturn this;\n\n\t}\n\n\tsetComponent( index, value ) {\n\n\t\tswitch ( index ) {\n\n\t\t\tcase 0: this.x = value; break;\n\t\t\tcase 1: this.y = value; break;\n\t\t\tcase 2: this.z = value; break;\n\t\t\tcase 3: this.w = value; break;\n\t\t\tdefault: throw new Error( 'index is out of range: ' + index );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tgetComponent( index ) {\n\n\t\tswitch ( index ) {\n\n\t\t\tcase 0: return this.x;\n\t\t\tcase 1: return this.y;\n\t\t\tcase 2: return this.z;\n\t\t\tcase 3: return this.w;\n\t\t\tdefault: throw new Error( 'index is out of range: ' + index );\n\n\t\t}\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor( this.x, this.y, this.z, this.w );\n\n\t}\n\n\tcopy( v ) {\n\n\t\tthis.x = v.x;\n\t\tthis.y = v.y;\n\t\tthis.z = v.z;\n\t\tthis.w = ( v.w !== undefined ) ? v.w : 1;\n\n\t\treturn this;\n\n\t}\n\n\tadd( v, w ) {\n\n\t\tif ( w !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Vector4: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );\n\t\t\treturn this.addVectors( v, w );\n\n\t\t}\n\n\t\tthis.x += v.x;\n\t\tthis.y += v.y;\n\t\tthis.z += v.z;\n\t\tthis.w += v.w;\n\n\t\treturn this;\n\n\t}\n\n\taddScalar( s ) {\n\n\t\tthis.x += s;\n\t\tthis.y += s;\n\t\tthis.z += s;\n\t\tthis.w += s;\n\n\t\treturn this;\n\n\t}\n\n\taddVectors( a, b ) {\n\n\t\tthis.x = a.x + b.x;\n\t\tthis.y = a.y + b.y;\n\t\tthis.z = a.z + b.z;\n\t\tthis.w = a.w + b.w;\n\n\t\treturn this;\n\n\t}\n\n\taddScaledVector( v, s ) {\n\n\t\tthis.x += v.x * s;\n\t\tthis.y += v.y * s;\n\t\tthis.z += v.z * s;\n\t\tthis.w += v.w * s;\n\n\t\treturn this;\n\n\t}\n\n\tsub( v, w ) {\n\n\t\tif ( w !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Vector4: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );\n\t\t\treturn this.subVectors( v, w );\n\n\t\t}\n\n\t\tthis.x -= v.x;\n\t\tthis.y -= v.y;\n\t\tthis.z -= v.z;\n\t\tthis.w -= v.w;\n\n\t\treturn this;\n\n\t}\n\n\tsubScalar( s ) {\n\n\t\tthis.x -= s;\n\t\tthis.y -= s;\n\t\tthis.z -= s;\n\t\tthis.w -= s;\n\n\t\treturn this;\n\n\t}\n\n\tsubVectors( a, b ) {\n\n\t\tthis.x = a.x - b.x;\n\t\tthis.y = a.y - b.y;\n\t\tthis.z = a.z - b.z;\n\t\tthis.w = a.w - b.w;\n\n\t\treturn this;\n\n\t}\n\n\tmultiplyScalar( scalar ) {\n\n\t\tthis.x *= scalar;\n\t\tthis.y *= scalar;\n\t\tthis.z *= scalar;\n\t\tthis.w *= scalar;\n\n\t\treturn this;\n\n\t}\n\n\tapplyMatrix4( m ) {\n\n\t\tconst x = this.x, y = this.y, z = this.z, w = this.w;\n\t\tconst e = m.elements;\n\n\t\tthis.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z + e[ 12 ] * w;\n\t\tthis.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z + e[ 13 ] * w;\n\t\tthis.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] * w;\n\t\tthis.w = e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] * w;\n\n\t\treturn this;\n\n\t}\n\n\tdivideScalar( scalar ) {\n\n\t\treturn this.multiplyScalar( 1 / scalar );\n\n\t}\n\n\tsetAxisAngleFromQuaternion( q ) {\n\n\t\t// http://www.euclideanspace.com/maths/geometry/rotations/conversions/quaternionToAngle/index.htm\n\n\t\t// q is assumed to be normalized\n\n\t\tthis.w = 2 * Math.acos( q.w );\n\n\t\tconst s = Math.sqrt( 1 - q.w * q.w );\n\n\t\tif ( s < 0.0001 ) {\n\n\t\t\tthis.x = 1;\n\t\t\tthis.y = 0;\n\t\t\tthis.z = 0;\n\n\t\t} else {\n\n\t\t\tthis.x = q.x / s;\n\t\t\tthis.y = q.y / s;\n\t\t\tthis.z = q.z / s;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetAxisAngleFromRotationMatrix( m ) {\n\n\t\t// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToAngle/index.htm\n\n\t\t// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)\n\n\t\tlet angle, x, y, z; // variables for result\n\t\tconst epsilon = 0.01,\t\t// margin to allow for rounding errors\n\t\t\tepsilon2 = 0.1,\t\t// margin to distinguish between 0 and 180 degrees\n\n\t\t\tte = m.elements,\n\n\t\t\tm11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],\n\t\t\tm21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],\n\t\t\tm31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];\n\n\t\tif ( ( Math.abs( m12 - m21 ) < epsilon ) &&\n\t\t     ( Math.abs( m13 - m31 ) < epsilon ) &&\n\t\t     ( Math.abs( m23 - m32 ) < epsilon ) ) {\n\n\t\t\t// singularity found\n\t\t\t// first check for identity matrix which must have +1 for all terms\n\t\t\t// in leading diagonal and zero in other terms\n\n\t\t\tif ( ( Math.abs( m12 + m21 ) < epsilon2 ) &&\n\t\t\t     ( Math.abs( m13 + m31 ) < epsilon2 ) &&\n\t\t\t     ( Math.abs( m23 + m32 ) < epsilon2 ) &&\n\t\t\t     ( Math.abs( m11 + m22 + m33 - 3 ) < epsilon2 ) ) {\n\n\t\t\t\t// this singularity is identity matrix so angle = 0\n\n\t\t\t\tthis.set( 1, 0, 0, 0 );\n\n\t\t\t\treturn this; // zero angle, arbitrary axis\n\n\t\t\t}\n\n\t\t\t// otherwise this singularity is angle = 180\n\n\t\t\tangle = Math.PI;\n\n\t\t\tconst xx = ( m11 + 1 ) / 2;\n\t\t\tconst yy = ( m22 + 1 ) / 2;\n\t\t\tconst zz = ( m33 + 1 ) / 2;\n\t\t\tconst xy = ( m12 + m21 ) / 4;\n\t\t\tconst xz = ( m13 + m31 ) / 4;\n\t\t\tconst yz = ( m23 + m32 ) / 4;\n\n\t\t\tif ( ( xx > yy ) && ( xx > zz ) ) {\n\n\t\t\t\t// m11 is the largest diagonal term\n\n\t\t\t\tif ( xx < epsilon ) {\n\n\t\t\t\t\tx = 0;\n\t\t\t\t\ty = 0.707106781;\n\t\t\t\t\tz = 0.707106781;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tx = Math.sqrt( xx );\n\t\t\t\t\ty = xy / x;\n\t\t\t\t\tz = xz / x;\n\n\t\t\t\t}\n\n\t\t\t} else if ( yy > zz ) {\n\n\t\t\t\t// m22 is the largest diagonal term\n\n\t\t\t\tif ( yy < epsilon ) {\n\n\t\t\t\t\tx = 0.707106781;\n\t\t\t\t\ty = 0;\n\t\t\t\t\tz = 0.707106781;\n\n\t\t\t\t} else {\n\n\t\t\t\t\ty = Math.sqrt( yy );\n\t\t\t\t\tx = xy / y;\n\t\t\t\t\tz = yz / y;\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\t// m33 is the largest diagonal term so base result on this\n\n\t\t\t\tif ( zz < epsilon ) {\n\n\t\t\t\t\tx = 0.707106781;\n\t\t\t\t\ty = 0.707106781;\n\t\t\t\t\tz = 0;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tz = Math.sqrt( zz );\n\t\t\t\t\tx = xz / z;\n\t\t\t\t\ty = yz / z;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tthis.set( x, y, z, angle );\n\n\t\t\treturn this; // return 180 deg rotation\n\n\t\t}\n\n\t\t// as we have reached here there are no singularities so we can handle normally\n\n\t\tlet s = Math.sqrt( ( m32 - m23 ) * ( m32 - m23 ) +\n\t\t\t( m13 - m31 ) * ( m13 - m31 ) +\n\t\t\t( m21 - m12 ) * ( m21 - m12 ) ); // used to normalize\n\n\t\tif ( Math.abs( s ) < 0.001 ) s = 1;\n\n\t\t// prevent divide by zero, should not happen if matrix is orthogonal and should be\n\t\t// caught by singularity test above, but I've left it in just in case\n\n\t\tthis.x = ( m32 - m23 ) / s;\n\t\tthis.y = ( m13 - m31 ) / s;\n\t\tthis.z = ( m21 - m12 ) / s;\n\t\tthis.w = Math.acos( ( m11 + m22 + m33 - 1 ) / 2 );\n\n\t\treturn this;\n\n\t}\n\n\tmin( v ) {\n\n\t\tthis.x = Math.min( this.x, v.x );\n\t\tthis.y = Math.min( this.y, v.y );\n\t\tthis.z = Math.min( this.z, v.z );\n\t\tthis.w = Math.min( this.w, v.w );\n\n\t\treturn this;\n\n\t}\n\n\tmax( v ) {\n\n\t\tthis.x = Math.max( this.x, v.x );\n\t\tthis.y = Math.max( this.y, v.y );\n\t\tthis.z = Math.max( this.z, v.z );\n\t\tthis.w = Math.max( this.w, v.w );\n\n\t\treturn this;\n\n\t}\n\n\tclamp( min, max ) {\n\n\t\t// assumes min < max, componentwise\n\n\t\tthis.x = Math.max( min.x, Math.min( max.x, this.x ) );\n\t\tthis.y = Math.max( min.y, Math.min( max.y, this.y ) );\n\t\tthis.z = Math.max( min.z, Math.min( max.z, this.z ) );\n\t\tthis.w = Math.max( min.w, Math.min( max.w, this.w ) );\n\n\t\treturn this;\n\n\t}\n\n\tclampScalar( minVal, maxVal ) {\n\n\t\tthis.x = Math.max( minVal, Math.min( maxVal, this.x ) );\n\t\tthis.y = Math.max( minVal, Math.min( maxVal, this.y ) );\n\t\tthis.z = Math.max( minVal, Math.min( maxVal, this.z ) );\n\t\tthis.w = Math.max( minVal, Math.min( maxVal, this.w ) );\n\n\t\treturn this;\n\n\t}\n\n\tclampLength( min, max ) {\n\n\t\tconst length = this.length();\n\n\t\treturn this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );\n\n\t}\n\n\tfloor() {\n\n\t\tthis.x = Math.floor( this.x );\n\t\tthis.y = Math.floor( this.y );\n\t\tthis.z = Math.floor( this.z );\n\t\tthis.w = Math.floor( this.w );\n\n\t\treturn this;\n\n\t}\n\n\tceil() {\n\n\t\tthis.x = Math.ceil( this.x );\n\t\tthis.y = Math.ceil( this.y );\n\t\tthis.z = Math.ceil( this.z );\n\t\tthis.w = Math.ceil( this.w );\n\n\t\treturn this;\n\n\t}\n\n\tround() {\n\n\t\tthis.x = Math.round( this.x );\n\t\tthis.y = Math.round( this.y );\n\t\tthis.z = Math.round( this.z );\n\t\tthis.w = Math.round( this.w );\n\n\t\treturn this;\n\n\t}\n\n\troundToZero() {\n\n\t\tthis.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );\n\t\tthis.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );\n\t\tthis.z = ( this.z < 0 ) ? Math.ceil( this.z ) : Math.floor( this.z );\n\t\tthis.w = ( this.w < 0 ) ? Math.ceil( this.w ) : Math.floor( this.w );\n\n\t\treturn this;\n\n\t}\n\n\tnegate() {\n\n\t\tthis.x = - this.x;\n\t\tthis.y = - this.y;\n\t\tthis.z = - this.z;\n\t\tthis.w = - this.w;\n\n\t\treturn this;\n\n\t}\n\n\tdot( v ) {\n\n\t\treturn this.x * v.x + this.y * v.y + this.z * v.z + this.w * v.w;\n\n\t}\n\n\tlengthSq() {\n\n\t\treturn this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w;\n\n\t}\n\n\tlength() {\n\n\t\treturn Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w );\n\n\t}\n\n\tmanhattanLength() {\n\n\t\treturn Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z ) + Math.abs( this.w );\n\n\t}\n\n\tnormalize() {\n\n\t\treturn this.divideScalar( this.length() || 1 );\n\n\t}\n\n\tsetLength( length ) {\n\n\t\treturn this.normalize().multiplyScalar( length );\n\n\t}\n\n\tlerp( v, alpha ) {\n\n\t\tthis.x += ( v.x - this.x ) * alpha;\n\t\tthis.y += ( v.y - this.y ) * alpha;\n\t\tthis.z += ( v.z - this.z ) * alpha;\n\t\tthis.w += ( v.w - this.w ) * alpha;\n\n\t\treturn this;\n\n\t}\n\n\tlerpVectors( v1, v2, alpha ) {\n\n\t\tthis.x = v1.x + ( v2.x - v1.x ) * alpha;\n\t\tthis.y = v1.y + ( v2.y - v1.y ) * alpha;\n\t\tthis.z = v1.z + ( v2.z - v1.z ) * alpha;\n\t\tthis.w = v1.w + ( v2.w - v1.w ) * alpha;\n\n\t\treturn this;\n\n\t}\n\n\tequals( v ) {\n\n\t\treturn ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) && ( v.w === this.w ) );\n\n\t}\n\n\tfromArray( array, offset = 0 ) {\n\n\t\tthis.x = array[ offset ];\n\t\tthis.y = array[ offset + 1 ];\n\t\tthis.z = array[ offset + 2 ];\n\t\tthis.w = array[ offset + 3 ];\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tarray[ offset ] = this.x;\n\t\tarray[ offset + 1 ] = this.y;\n\t\tarray[ offset + 2 ] = this.z;\n\t\tarray[ offset + 3 ] = this.w;\n\n\t\treturn array;\n\n\t}\n\n\tfromBufferAttribute( attribute, index, offset ) {\n\n\t\tif ( offset !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Vector4: offset has been removed from .fromBufferAttribute().' );\n\n\t\t}\n\n\t\tthis.x = attribute.getX( index );\n\t\tthis.y = attribute.getY( index );\n\t\tthis.z = attribute.getZ( index );\n\t\tthis.w = attribute.getW( index );\n\n\t\treturn this;\n\n\t}\n\n\trandom() {\n\n\t\tthis.x = Math.random();\n\t\tthis.y = Math.random();\n\t\tthis.z = Math.random();\n\t\tthis.w = Math.random();\n\n\t\treturn this;\n\n\t}\n\n}\n\n/*\n In options, we can specify:\n * Texture parameters for an auto-generated target texture\n * depthBuffer/stencilBuffer: Booleans to indicate if we should generate these buffers\n*/\nfunction WebGLRenderTarget( width, height, options ) {\n\n\tthis.width = width;\n\tthis.height = height;\n\n\tthis.scissor = new Vector4( 0, 0, width, height );\n\tthis.scissorTest = false;\n\n\tthis.viewport = new Vector4( 0, 0, width, height );\n\n\toptions = options || {};\n\n\tthis.texture = new Texture( undefined, options.mapping, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.encoding );\n\n\tthis.texture.image = {};\n\tthis.texture.image.width = width;\n\tthis.texture.image.height = height;\n\n\tthis.texture.generateMipmaps = options.generateMipmaps !== undefined ? options.generateMipmaps : false;\n\tthis.texture.minFilter = options.minFilter !== undefined ? options.minFilter : LinearFilter;\n\n\tthis.depthBuffer = options.depthBuffer !== undefined ? options.depthBuffer : true;\n\tthis.stencilBuffer = options.stencilBuffer !== undefined ? options.stencilBuffer : false;\n\tthis.depthTexture = options.depthTexture !== undefined ? options.depthTexture : null;\n\n}\n\nWebGLRenderTarget.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {\n\n\tconstructor: WebGLRenderTarget,\n\n\tisWebGLRenderTarget: true,\n\n\tsetSize: function ( width, height ) {\n\n\t\tif ( this.width !== width || this.height !== height ) {\n\n\t\t\tthis.width = width;\n\t\t\tthis.height = height;\n\n\t\t\tthis.texture.image.width = width;\n\t\t\tthis.texture.image.height = height;\n\n\t\t\tthis.dispose();\n\n\t\t}\n\n\t\tthis.viewport.set( 0, 0, width, height );\n\t\tthis.scissor.set( 0, 0, width, height );\n\n\t},\n\n\tclone: function () {\n\n\t\treturn new this.constructor().copy( this );\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\tthis.width = source.width;\n\t\tthis.height = source.height;\n\n\t\tthis.viewport.copy( source.viewport );\n\n\t\tthis.texture = source.texture.clone();\n\n\t\tthis.depthBuffer = source.depthBuffer;\n\t\tthis.stencilBuffer = source.stencilBuffer;\n\t\tthis.depthTexture = source.depthTexture;\n\n\t\treturn this;\n\n\t},\n\n\tdispose: function () {\n\n\t\tthis.dispatchEvent( { type: 'dispose' } );\n\n\t}\n\n} );\n\nfunction WebGLMultisampleRenderTarget( width, height, options ) {\n\n\tWebGLRenderTarget.call( this, width, height, options );\n\n\tthis.samples = 4;\n\n}\n\nWebGLMultisampleRenderTarget.prototype = Object.assign( Object.create( WebGLRenderTarget.prototype ), {\n\n\tconstructor: WebGLMultisampleRenderTarget,\n\n\tisWebGLMultisampleRenderTarget: true,\n\n\tcopy: function ( source ) {\n\n\t\tWebGLRenderTarget.prototype.copy.call( this, source );\n\n\t\tthis.samples = source.samples;\n\n\t\treturn this;\n\n\t}\n\n} );\n\nclass Quaternion {\n\n\tconstructor( x = 0, y = 0, z = 0, w = 1 ) {\n\n\t\tObject.defineProperty( this, 'isQuaternion', { value: true } );\n\n\t\tthis._x = x;\n\t\tthis._y = y;\n\t\tthis._z = z;\n\t\tthis._w = w;\n\n\t}\n\n\tstatic slerp( qa, qb, qm, t ) {\n\n\t\treturn qm.copy( qa ).slerp( qb, t );\n\n\t}\n\n\tstatic slerpFlat( dst, dstOffset, src0, srcOffset0, src1, srcOffset1, t ) {\n\n\t\t// fuzz-free, array-based Quaternion SLERP operation\n\n\t\tlet x0 = src0[ srcOffset0 + 0 ],\n\t\t\ty0 = src0[ srcOffset0 + 1 ],\n\t\t\tz0 = src0[ srcOffset0 + 2 ],\n\t\t\tw0 = src0[ srcOffset0 + 3 ];\n\n\t\tconst x1 = src1[ srcOffset1 + 0 ],\n\t\t\ty1 = src1[ srcOffset1 + 1 ],\n\t\t\tz1 = src1[ srcOffset1 + 2 ],\n\t\t\tw1 = src1[ srcOffset1 + 3 ];\n\n\t\tif ( w0 !== w1 || x0 !== x1 || y0 !== y1 || z0 !== z1 ) {\n\n\t\t\tlet s = 1 - t;\n\t\t\tconst cos = x0 * x1 + y0 * y1 + z0 * z1 + w0 * w1,\n\t\t\t\tdir = ( cos >= 0 ? 1 : - 1 ),\n\t\t\t\tsqrSin = 1 - cos * cos;\n\n\t\t\t// Skip the Slerp for tiny steps to avoid numeric problems:\n\t\t\tif ( sqrSin > Number.EPSILON ) {\n\n\t\t\t\tconst sin = Math.sqrt( sqrSin ),\n\t\t\t\t\tlen = Math.atan2( sin, cos * dir );\n\n\t\t\t\ts = Math.sin( s * len ) / sin;\n\t\t\t\tt = Math.sin( t * len ) / sin;\n\n\t\t\t}\n\n\t\t\tconst tDir = t * dir;\n\n\t\t\tx0 = x0 * s + x1 * tDir;\n\t\t\ty0 = y0 * s + y1 * tDir;\n\t\t\tz0 = z0 * s + z1 * tDir;\n\t\t\tw0 = w0 * s + w1 * tDir;\n\n\t\t\t// Normalize in case we just did a lerp:\n\t\t\tif ( s === 1 - t ) {\n\n\t\t\t\tconst f = 1 / Math.sqrt( x0 * x0 + y0 * y0 + z0 * z0 + w0 * w0 );\n\n\t\t\t\tx0 *= f;\n\t\t\t\ty0 *= f;\n\t\t\t\tz0 *= f;\n\t\t\t\tw0 *= f;\n\n\t\t\t}\n\n\t\t}\n\n\t\tdst[ dstOffset ] = x0;\n\t\tdst[ dstOffset + 1 ] = y0;\n\t\tdst[ dstOffset + 2 ] = z0;\n\t\tdst[ dstOffset + 3 ] = w0;\n\n\t}\n\n\tstatic multiplyQuaternionsFlat( dst, dstOffset, src0, srcOffset0, src1, srcOffset1 ) {\n\n\t\tconst x0 = src0[ srcOffset0 ];\n\t\tconst y0 = src0[ srcOffset0 + 1 ];\n\t\tconst z0 = src0[ srcOffset0 + 2 ];\n\t\tconst w0 = src0[ srcOffset0 + 3 ];\n\n\t\tconst x1 = src1[ srcOffset1 ];\n\t\tconst y1 = src1[ srcOffset1 + 1 ];\n\t\tconst z1 = src1[ srcOffset1 + 2 ];\n\t\tconst w1 = src1[ srcOffset1 + 3 ];\n\n\t\tdst[ dstOffset ] = x0 * w1 + w0 * x1 + y0 * z1 - z0 * y1;\n\t\tdst[ dstOffset + 1 ] = y0 * w1 + w0 * y1 + z0 * x1 - x0 * z1;\n\t\tdst[ dstOffset + 2 ] = z0 * w1 + w0 * z1 + x0 * y1 - y0 * x1;\n\t\tdst[ dstOffset + 3 ] = w0 * w1 - x0 * x1 - y0 * y1 - z0 * z1;\n\n\t\treturn dst;\n\n\t}\n\n\tget x() {\n\n\t\treturn this._x;\n\n\t}\n\n\tset x( value ) {\n\n\t\tthis._x = value;\n\t\tthis._onChangeCallback();\n\n\t}\n\n\tget y() {\n\n\t\treturn this._y;\n\n\t}\n\n\tset y( value ) {\n\n\t\tthis._y = value;\n\t\tthis._onChangeCallback();\n\n\t}\n\n\tget z() {\n\n\t\treturn this._z;\n\n\t}\n\n\tset z( value ) {\n\n\t\tthis._z = value;\n\t\tthis._onChangeCallback();\n\n\t}\n\n\tget w() {\n\n\t\treturn this._w;\n\n\t}\n\n\tset w( value ) {\n\n\t\tthis._w = value;\n\t\tthis._onChangeCallback();\n\n\t}\n\n\tset( x, y, z, w ) {\n\n\t\tthis._x = x;\n\t\tthis._y = y;\n\t\tthis._z = z;\n\t\tthis._w = w;\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor( this._x, this._y, this._z, this._w );\n\n\t}\n\n\tcopy( quaternion ) {\n\n\t\tthis._x = quaternion.x;\n\t\tthis._y = quaternion.y;\n\t\tthis._z = quaternion.z;\n\t\tthis._w = quaternion.w;\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tsetFromEuler( euler, update ) {\n\n\t\tif ( ! ( euler && euler.isEuler ) ) {\n\n\t\t\tthrow new Error( 'THREE.Quaternion: .setFromEuler() now expects an Euler rotation rather than a Vector3 and order.' );\n\n\t\t}\n\n\t\tconst x = euler._x, y = euler._y, z = euler._z, order = euler._order;\n\n\t\t// http://www.mathworks.com/matlabcentral/fileexchange/\n\t\t// \t20696-function-to-convert-between-dcm-euler-angles-quaternions-and-euler-vectors/\n\t\t//\tcontent/SpinCalc.m\n\n\t\tconst cos = Math.cos;\n\t\tconst sin = Math.sin;\n\n\t\tconst c1 = cos( x / 2 );\n\t\tconst c2 = cos( y / 2 );\n\t\tconst c3 = cos( z / 2 );\n\n\t\tconst s1 = sin( x / 2 );\n\t\tconst s2 = sin( y / 2 );\n\t\tconst s3 = sin( z / 2 );\n\n\t\tswitch ( order ) {\n\n\t\t\tcase 'XYZ':\n\t\t\t\tthis._x = s1 * c2 * c3 + c1 * s2 * s3;\n\t\t\t\tthis._y = c1 * s2 * c3 - s1 * c2 * s3;\n\t\t\t\tthis._z = c1 * c2 * s3 + s1 * s2 * c3;\n\t\t\t\tthis._w = c1 * c2 * c3 - s1 * s2 * s3;\n\t\t\t\tbreak;\n\n\t\t\tcase 'YXZ':\n\t\t\t\tthis._x = s1 * c2 * c3 + c1 * s2 * s3;\n\t\t\t\tthis._y = c1 * s2 * c3 - s1 * c2 * s3;\n\t\t\t\tthis._z = c1 * c2 * s3 - s1 * s2 * c3;\n\t\t\t\tthis._w = c1 * c2 * c3 + s1 * s2 * s3;\n\t\t\t\tbreak;\n\n\t\t\tcase 'ZXY':\n\t\t\t\tthis._x = s1 * c2 * c3 - c1 * s2 * s3;\n\t\t\t\tthis._y = c1 * s2 * c3 + s1 * c2 * s3;\n\t\t\t\tthis._z = c1 * c2 * s3 + s1 * s2 * c3;\n\t\t\t\tthis._w = c1 * c2 * c3 - s1 * s2 * s3;\n\t\t\t\tbreak;\n\n\t\t\tcase 'ZYX':\n\t\t\t\tthis._x = s1 * c2 * c3 - c1 * s2 * s3;\n\t\t\t\tthis._y = c1 * s2 * c3 + s1 * c2 * s3;\n\t\t\t\tthis._z = c1 * c2 * s3 - s1 * s2 * c3;\n\t\t\t\tthis._w = c1 * c2 * c3 + s1 * s2 * s3;\n\t\t\t\tbreak;\n\n\t\t\tcase 'YZX':\n\t\t\t\tthis._x = s1 * c2 * c3 + c1 * s2 * s3;\n\t\t\t\tthis._y = c1 * s2 * c3 + s1 * c2 * s3;\n\t\t\t\tthis._z = c1 * c2 * s3 - s1 * s2 * c3;\n\t\t\t\tthis._w = c1 * c2 * c3 - s1 * s2 * s3;\n\t\t\t\tbreak;\n\n\t\t\tcase 'XZY':\n\t\t\t\tthis._x = s1 * c2 * c3 - c1 * s2 * s3;\n\t\t\t\tthis._y = c1 * s2 * c3 - s1 * c2 * s3;\n\t\t\t\tthis._z = c1 * c2 * s3 + s1 * s2 * c3;\n\t\t\t\tthis._w = c1 * c2 * c3 + s1 * s2 * s3;\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\t\t\t\tconsole.warn( 'THREE.Quaternion: .setFromEuler() encountered an unknown order: ' + order );\n\n\t\t}\n\n\t\tif ( update !== false ) this._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tsetFromAxisAngle( axis, angle ) {\n\n\t\t// http://www.euclideanspace.com/maths/geometry/rotations/conversions/angleToQuaternion/index.htm\n\n\t\t// assumes axis is normalized\n\n\t\tconst halfAngle = angle / 2, s = Math.sin( halfAngle );\n\n\t\tthis._x = axis.x * s;\n\t\tthis._y = axis.y * s;\n\t\tthis._z = axis.z * s;\n\t\tthis._w = Math.cos( halfAngle );\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tsetFromRotationMatrix( m ) {\n\n\t\t// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToQuaternion/index.htm\n\n\t\t// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)\n\n\t\tconst te = m.elements,\n\n\t\t\tm11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],\n\t\t\tm21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],\n\t\t\tm31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ],\n\n\t\t\ttrace = m11 + m22 + m33;\n\n\t\tif ( trace > 0 ) {\n\n\t\t\tconst s = 0.5 / Math.sqrt( trace + 1.0 );\n\n\t\t\tthis._w = 0.25 / s;\n\t\t\tthis._x = ( m32 - m23 ) * s;\n\t\t\tthis._y = ( m13 - m31 ) * s;\n\t\t\tthis._z = ( m21 - m12 ) * s;\n\n\t\t} else if ( m11 > m22 && m11 > m33 ) {\n\n\t\t\tconst s = 2.0 * Math.sqrt( 1.0 + m11 - m22 - m33 );\n\n\t\t\tthis._w = ( m32 - m23 ) / s;\n\t\t\tthis._x = 0.25 * s;\n\t\t\tthis._y = ( m12 + m21 ) / s;\n\t\t\tthis._z = ( m13 + m31 ) / s;\n\n\t\t} else if ( m22 > m33 ) {\n\n\t\t\tconst s = 2.0 * Math.sqrt( 1.0 + m22 - m11 - m33 );\n\n\t\t\tthis._w = ( m13 - m31 ) / s;\n\t\t\tthis._x = ( m12 + m21 ) / s;\n\t\t\tthis._y = 0.25 * s;\n\t\t\tthis._z = ( m23 + m32 ) / s;\n\n\t\t} else {\n\n\t\t\tconst s = 2.0 * Math.sqrt( 1.0 + m33 - m11 - m22 );\n\n\t\t\tthis._w = ( m21 - m12 ) / s;\n\t\t\tthis._x = ( m13 + m31 ) / s;\n\t\t\tthis._y = ( m23 + m32 ) / s;\n\t\t\tthis._z = 0.25 * s;\n\n\t\t}\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tsetFromUnitVectors( vFrom, vTo ) {\n\n\t\t// assumes direction vectors vFrom and vTo are normalized\n\n\t\tconst EPS = 0.000001;\n\n\t\tlet r = vFrom.dot( vTo ) + 1;\n\n\t\tif ( r < EPS ) {\n\n\t\t\tr = 0;\n\n\t\t\tif ( Math.abs( vFrom.x ) > Math.abs( vFrom.z ) ) {\n\n\t\t\t\tthis._x = - vFrom.y;\n\t\t\t\tthis._y = vFrom.x;\n\t\t\t\tthis._z = 0;\n\t\t\t\tthis._w = r;\n\n\t\t\t} else {\n\n\t\t\t\tthis._x = 0;\n\t\t\t\tthis._y = - vFrom.z;\n\t\t\t\tthis._z = vFrom.y;\n\t\t\t\tthis._w = r;\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\t// crossVectors( vFrom, vTo ); // inlined to avoid cyclic dependency on Vector3\n\n\t\t\tthis._x = vFrom.y * vTo.z - vFrom.z * vTo.y;\n\t\t\tthis._y = vFrom.z * vTo.x - vFrom.x * vTo.z;\n\t\t\tthis._z = vFrom.x * vTo.y - vFrom.y * vTo.x;\n\t\t\tthis._w = r;\n\n\t\t}\n\n\t\treturn this.normalize();\n\n\t}\n\n\tangleTo( q ) {\n\n\t\treturn 2 * Math.acos( Math.abs( MathUtils.clamp( this.dot( q ), - 1, 1 ) ) );\n\n\t}\n\n\trotateTowards( q, step ) {\n\n\t\tconst angle = this.angleTo( q );\n\n\t\tif ( angle === 0 ) return this;\n\n\t\tconst t = Math.min( 1, step / angle );\n\n\t\tthis.slerp( q, t );\n\n\t\treturn this;\n\n\t}\n\n\tidentity() {\n\n\t\treturn this.set( 0, 0, 0, 1 );\n\n\t}\n\n\tinvert() {\n\n\t\t// quaternion is assumed to have unit length\n\n\t\treturn this.conjugate();\n\n\t}\n\n\tconjugate() {\n\n\t\tthis._x *= - 1;\n\t\tthis._y *= - 1;\n\t\tthis._z *= - 1;\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tdot( v ) {\n\n\t\treturn this._x * v._x + this._y * v._y + this._z * v._z + this._w * v._w;\n\n\t}\n\n\tlengthSq() {\n\n\t\treturn this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w;\n\n\t}\n\n\tlength() {\n\n\t\treturn Math.sqrt( this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w );\n\n\t}\n\n\tnormalize() {\n\n\t\tlet l = this.length();\n\n\t\tif ( l === 0 ) {\n\n\t\t\tthis._x = 0;\n\t\t\tthis._y = 0;\n\t\t\tthis._z = 0;\n\t\t\tthis._w = 1;\n\n\t\t} else {\n\n\t\t\tl = 1 / l;\n\n\t\t\tthis._x = this._x * l;\n\t\t\tthis._y = this._y * l;\n\t\t\tthis._z = this._z * l;\n\t\t\tthis._w = this._w * l;\n\n\t\t}\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tmultiply( q, p ) {\n\n\t\tif ( p !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Quaternion: .multiply() now only accepts one argument. Use .multiplyQuaternions( a, b ) instead.' );\n\t\t\treturn this.multiplyQuaternions( q, p );\n\n\t\t}\n\n\t\treturn this.multiplyQuaternions( this, q );\n\n\t}\n\n\tpremultiply( q ) {\n\n\t\treturn this.multiplyQuaternions( q, this );\n\n\t}\n\n\tmultiplyQuaternions( a, b ) {\n\n\t\t// from http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/code/index.htm\n\n\t\tconst qax = a._x, qay = a._y, qaz = a._z, qaw = a._w;\n\t\tconst qbx = b._x, qby = b._y, qbz = b._z, qbw = b._w;\n\n\t\tthis._x = qax * qbw + qaw * qbx + qay * qbz - qaz * qby;\n\t\tthis._y = qay * qbw + qaw * qby + qaz * qbx - qax * qbz;\n\t\tthis._z = qaz * qbw + qaw * qbz + qax * qby - qay * qbx;\n\t\tthis._w = qaw * qbw - qax * qbx - qay * qby - qaz * qbz;\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tslerp( qb, t ) {\n\n\t\tif ( t === 0 ) return this;\n\t\tif ( t === 1 ) return this.copy( qb );\n\n\t\tconst x = this._x, y = this._y, z = this._z, w = this._w;\n\n\t\t// http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/slerp/\n\n\t\tlet cosHalfTheta = w * qb._w + x * qb._x + y * qb._y + z * qb._z;\n\n\t\tif ( cosHalfTheta < 0 ) {\n\n\t\t\tthis._w = - qb._w;\n\t\t\tthis._x = - qb._x;\n\t\t\tthis._y = - qb._y;\n\t\t\tthis._z = - qb._z;\n\n\t\t\tcosHalfTheta = - cosHalfTheta;\n\n\t\t} else {\n\n\t\t\tthis.copy( qb );\n\n\t\t}\n\n\t\tif ( cosHalfTheta >= 1.0 ) {\n\n\t\t\tthis._w = w;\n\t\t\tthis._x = x;\n\t\t\tthis._y = y;\n\t\t\tthis._z = z;\n\n\t\t\treturn this;\n\n\t\t}\n\n\t\tconst sqrSinHalfTheta = 1.0 - cosHalfTheta * cosHalfTheta;\n\n\t\tif ( sqrSinHalfTheta <= Number.EPSILON ) {\n\n\t\t\tconst s = 1 - t;\n\t\t\tthis._w = s * w + t * this._w;\n\t\t\tthis._x = s * x + t * this._x;\n\t\t\tthis._y = s * y + t * this._y;\n\t\t\tthis._z = s * z + t * this._z;\n\n\t\t\tthis.normalize();\n\t\t\tthis._onChangeCallback();\n\n\t\t\treturn this;\n\n\t\t}\n\n\t\tconst sinHalfTheta = Math.sqrt( sqrSinHalfTheta );\n\t\tconst halfTheta = Math.atan2( sinHalfTheta, cosHalfTheta );\n\t\tconst ratioA = Math.sin( ( 1 - t ) * halfTheta ) / sinHalfTheta,\n\t\t\tratioB = Math.sin( t * halfTheta ) / sinHalfTheta;\n\n\t\tthis._w = ( w * ratioA + this._w * ratioB );\n\t\tthis._x = ( x * ratioA + this._x * ratioB );\n\t\tthis._y = ( y * ratioA + this._y * ratioB );\n\t\tthis._z = ( z * ratioA + this._z * ratioB );\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tequals( quaternion ) {\n\n\t\treturn ( quaternion._x === this._x ) && ( quaternion._y === this._y ) && ( quaternion._z === this._z ) && ( quaternion._w === this._w );\n\n\t}\n\n\tfromArray( array, offset = 0 ) {\n\n\t\tthis._x = array[ offset ];\n\t\tthis._y = array[ offset + 1 ];\n\t\tthis._z = array[ offset + 2 ];\n\t\tthis._w = array[ offset + 3 ];\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tarray[ offset ] = this._x;\n\t\tarray[ offset + 1 ] = this._y;\n\t\tarray[ offset + 2 ] = this._z;\n\t\tarray[ offset + 3 ] = this._w;\n\n\t\treturn array;\n\n\t}\n\n\tfromBufferAttribute( attribute, index ) {\n\n\t\tthis._x = attribute.getX( index );\n\t\tthis._y = attribute.getY( index );\n\t\tthis._z = attribute.getZ( index );\n\t\tthis._w = attribute.getW( index );\n\n\t\treturn this;\n\n\t}\n\n\t_onChange( callback ) {\n\n\t\tthis._onChangeCallback = callback;\n\n\t\treturn this;\n\n\t}\n\n\t_onChangeCallback() {}\n\n}\n\nclass Vector3 {\n\n\tconstructor( x = 0, y = 0, z = 0 ) {\n\n\t\tObject.defineProperty( this, 'isVector3', { value: true } );\n\n\t\tthis.x = x;\n\t\tthis.y = y;\n\t\tthis.z = z;\n\n\t}\n\n\tset( x, y, z ) {\n\n\t\tif ( z === undefined ) z = this.z; // sprite.scale.set(x,y)\n\n\t\tthis.x = x;\n\t\tthis.y = y;\n\t\tthis.z = z;\n\n\t\treturn this;\n\n\t}\n\n\tsetScalar( scalar ) {\n\n\t\tthis.x = scalar;\n\t\tthis.y = scalar;\n\t\tthis.z = scalar;\n\n\t\treturn this;\n\n\t}\n\n\tsetX( x ) {\n\n\t\tthis.x = x;\n\n\t\treturn this;\n\n\t}\n\n\tsetY( y ) {\n\n\t\tthis.y = y;\n\n\t\treturn this;\n\n\t}\n\n\tsetZ( z ) {\n\n\t\tthis.z = z;\n\n\t\treturn this;\n\n\t}\n\n\tsetComponent( index, value ) {\n\n\t\tswitch ( index ) {\n\n\t\t\tcase 0: this.x = value; break;\n\t\t\tcase 1: this.y = value; break;\n\t\t\tcase 2: this.z = value; break;\n\t\t\tdefault: throw new Error( 'index is out of range: ' + index );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tgetComponent( index ) {\n\n\t\tswitch ( index ) {\n\n\t\t\tcase 0: return this.x;\n\t\t\tcase 1: return this.y;\n\t\t\tcase 2: return this.z;\n\t\t\tdefault: throw new Error( 'index is out of range: ' + index );\n\n\t\t}\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor( this.x, this.y, this.z );\n\n\t}\n\n\tcopy( v ) {\n\n\t\tthis.x = v.x;\n\t\tthis.y = v.y;\n\t\tthis.z = v.z;\n\n\t\treturn this;\n\n\t}\n\n\tadd( v, w ) {\n\n\t\tif ( w !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Vector3: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );\n\t\t\treturn this.addVectors( v, w );\n\n\t\t}\n\n\t\tthis.x += v.x;\n\t\tthis.y += v.y;\n\t\tthis.z += v.z;\n\n\t\treturn this;\n\n\t}\n\n\taddScalar( s ) {\n\n\t\tthis.x += s;\n\t\tthis.y += s;\n\t\tthis.z += s;\n\n\t\treturn this;\n\n\t}\n\n\taddVectors( a, b ) {\n\n\t\tthis.x = a.x + b.x;\n\t\tthis.y = a.y + b.y;\n\t\tthis.z = a.z + b.z;\n\n\t\treturn this;\n\n\t}\n\n\taddScaledVector( v, s ) {\n\n\t\tthis.x += v.x * s;\n\t\tthis.y += v.y * s;\n\t\tthis.z += v.z * s;\n\n\t\treturn this;\n\n\t}\n\n\tsub( v, w ) {\n\n\t\tif ( w !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Vector3: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );\n\t\t\treturn this.subVectors( v, w );\n\n\t\t}\n\n\t\tthis.x -= v.x;\n\t\tthis.y -= v.y;\n\t\tthis.z -= v.z;\n\n\t\treturn this;\n\n\t}\n\n\tsubScalar( s ) {\n\n\t\tthis.x -= s;\n\t\tthis.y -= s;\n\t\tthis.z -= s;\n\n\t\treturn this;\n\n\t}\n\n\tsubVectors( a, b ) {\n\n\t\tthis.x = a.x - b.x;\n\t\tthis.y = a.y - b.y;\n\t\tthis.z = a.z - b.z;\n\n\t\treturn this;\n\n\t}\n\n\tmultiply( v, w ) {\n\n\t\tif ( w !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Vector3: .multiply() now only accepts one argument. Use .multiplyVectors( a, b ) instead.' );\n\t\t\treturn this.multiplyVectors( v, w );\n\n\t\t}\n\n\t\tthis.x *= v.x;\n\t\tthis.y *= v.y;\n\t\tthis.z *= v.z;\n\n\t\treturn this;\n\n\t}\n\n\tmultiplyScalar( scalar ) {\n\n\t\tthis.x *= scalar;\n\t\tthis.y *= scalar;\n\t\tthis.z *= scalar;\n\n\t\treturn this;\n\n\t}\n\n\tmultiplyVectors( a, b ) {\n\n\t\tthis.x = a.x * b.x;\n\t\tthis.y = a.y * b.y;\n\t\tthis.z = a.z * b.z;\n\n\t\treturn this;\n\n\t}\n\n\tapplyEuler( euler ) {\n\n\t\tif ( ! ( euler && euler.isEuler ) ) {\n\n\t\t\tconsole.error( 'THREE.Vector3: .applyEuler() now expects an Euler rotation rather than a Vector3 and order.' );\n\n\t\t}\n\n\t\treturn this.applyQuaternion( _quaternion.setFromEuler( euler ) );\n\n\t}\n\n\tapplyAxisAngle( axis, angle ) {\n\n\t\treturn this.applyQuaternion( _quaternion.setFromAxisAngle( axis, angle ) );\n\n\t}\n\n\tapplyMatrix3( m ) {\n\n\t\tconst x = this.x, y = this.y, z = this.z;\n\t\tconst e = m.elements;\n\n\t\tthis.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ] * z;\n\t\tthis.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ] * z;\n\t\tthis.z = e[ 2 ] * x + e[ 5 ] * y + e[ 8 ] * z;\n\n\t\treturn this;\n\n\t}\n\n\tapplyNormalMatrix( m ) {\n\n\t\treturn this.applyMatrix3( m ).normalize();\n\n\t}\n\n\tapplyMatrix4( m ) {\n\n\t\tconst x = this.x, y = this.y, z = this.z;\n\t\tconst e = m.elements;\n\n\t\tconst w = 1 / ( e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] );\n\n\t\tthis.x = ( e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z + e[ 12 ] ) * w;\n\t\tthis.y = ( e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z + e[ 13 ] ) * w;\n\t\tthis.z = ( e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] ) * w;\n\n\t\treturn this;\n\n\t}\n\n\tapplyQuaternion( q ) {\n\n\t\tconst x = this.x, y = this.y, z = this.z;\n\t\tconst qx = q.x, qy = q.y, qz = q.z, qw = q.w;\n\n\t\t// calculate quat * vector\n\n\t\tconst ix = qw * x + qy * z - qz * y;\n\t\tconst iy = qw * y + qz * x - qx * z;\n\t\tconst iz = qw * z + qx * y - qy * x;\n\t\tconst iw = - qx * x - qy * y - qz * z;\n\n\t\t// calculate result * inverse quat\n\n\t\tthis.x = ix * qw + iw * - qx + iy * - qz - iz * - qy;\n\t\tthis.y = iy * qw + iw * - qy + iz * - qx - ix * - qz;\n\t\tthis.z = iz * qw + iw * - qz + ix * - qy - iy * - qx;\n\n\t\treturn this;\n\n\t}\n\n\tproject( camera ) {\n\n\t\treturn this.applyMatrix4( camera.matrixWorldInverse ).applyMatrix4( camera.projectionMatrix );\n\n\t}\n\n\tunproject( camera ) {\n\n\t\treturn this.applyMatrix4( camera.projectionMatrixInverse ).applyMatrix4( camera.matrixWorld );\n\n\t}\n\n\ttransformDirection( m ) {\n\n\t\t// input: THREE.Matrix4 affine matrix\n\t\t// vector interpreted as a direction\n\n\t\tconst x = this.x, y = this.y, z = this.z;\n\t\tconst e = m.elements;\n\n\t\tthis.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z;\n\t\tthis.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z;\n\t\tthis.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z;\n\n\t\treturn this.normalize();\n\n\t}\n\n\tdivide( v ) {\n\n\t\tthis.x /= v.x;\n\t\tthis.y /= v.y;\n\t\tthis.z /= v.z;\n\n\t\treturn this;\n\n\t}\n\n\tdivideScalar( scalar ) {\n\n\t\treturn this.multiplyScalar( 1 / scalar );\n\n\t}\n\n\tmin( v ) {\n\n\t\tthis.x = Math.min( this.x, v.x );\n\t\tthis.y = Math.min( this.y, v.y );\n\t\tthis.z = Math.min( this.z, v.z );\n\n\t\treturn this;\n\n\t}\n\n\tmax( v ) {\n\n\t\tthis.x = Math.max( this.x, v.x );\n\t\tthis.y = Math.max( this.y, v.y );\n\t\tthis.z = Math.max( this.z, v.z );\n\n\t\treturn this;\n\n\t}\n\n\tclamp( min, max ) {\n\n\t\t// assumes min < max, componentwise\n\n\t\tthis.x = Math.max( min.x, Math.min( max.x, this.x ) );\n\t\tthis.y = Math.max( min.y, Math.min( max.y, this.y ) );\n\t\tthis.z = Math.max( min.z, Math.min( max.z, this.z ) );\n\n\t\treturn this;\n\n\t}\n\n\tclampScalar( minVal, maxVal ) {\n\n\t\tthis.x = Math.max( minVal, Math.min( maxVal, this.x ) );\n\t\tthis.y = Math.max( minVal, Math.min( maxVal, this.y ) );\n\t\tthis.z = Math.max( minVal, Math.min( maxVal, this.z ) );\n\n\t\treturn this;\n\n\t}\n\n\tclampLength( min, max ) {\n\n\t\tconst length = this.length();\n\n\t\treturn this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );\n\n\t}\n\n\tfloor() {\n\n\t\tthis.x = Math.floor( this.x );\n\t\tthis.y = Math.floor( this.y );\n\t\tthis.z = Math.floor( this.z );\n\n\t\treturn this;\n\n\t}\n\n\tceil() {\n\n\t\tthis.x = Math.ceil( this.x );\n\t\tthis.y = Math.ceil( this.y );\n\t\tthis.z = Math.ceil( this.z );\n\n\t\treturn this;\n\n\t}\n\n\tround() {\n\n\t\tthis.x = Math.round( this.x );\n\t\tthis.y = Math.round( this.y );\n\t\tthis.z = Math.round( this.z );\n\n\t\treturn this;\n\n\t}\n\n\troundToZero() {\n\n\t\tthis.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );\n\t\tthis.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );\n\t\tthis.z = ( this.z < 0 ) ? Math.ceil( this.z ) : Math.floor( this.z );\n\n\t\treturn this;\n\n\t}\n\n\tnegate() {\n\n\t\tthis.x = - this.x;\n\t\tthis.y = - this.y;\n\t\tthis.z = - this.z;\n\n\t\treturn this;\n\n\t}\n\n\tdot( v ) {\n\n\t\treturn this.x * v.x + this.y * v.y + this.z * v.z;\n\n\t}\n\n\t// TODO lengthSquared?\n\n\tlengthSq() {\n\n\t\treturn this.x * this.x + this.y * this.y + this.z * this.z;\n\n\t}\n\n\tlength() {\n\n\t\treturn Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z );\n\n\t}\n\n\tmanhattanLength() {\n\n\t\treturn Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z );\n\n\t}\n\n\tnormalize() {\n\n\t\treturn this.divideScalar( this.length() || 1 );\n\n\t}\n\n\tsetLength( length ) {\n\n\t\treturn this.normalize().multiplyScalar( length );\n\n\t}\n\n\tlerp( v, alpha ) {\n\n\t\tthis.x += ( v.x - this.x ) * alpha;\n\t\tthis.y += ( v.y - this.y ) * alpha;\n\t\tthis.z += ( v.z - this.z ) * alpha;\n\n\t\treturn this;\n\n\t}\n\n\tlerpVectors( v1, v2, alpha ) {\n\n\t\tthis.x = v1.x + ( v2.x - v1.x ) * alpha;\n\t\tthis.y = v1.y + ( v2.y - v1.y ) * alpha;\n\t\tthis.z = v1.z + ( v2.z - v1.z ) * alpha;\n\n\t\treturn this;\n\n\t}\n\n\tcross( v, w ) {\n\n\t\tif ( w !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Vector3: .cross() now only accepts one argument. Use .crossVectors( a, b ) instead.' );\n\t\t\treturn this.crossVectors( v, w );\n\n\t\t}\n\n\t\treturn this.crossVectors( this, v );\n\n\t}\n\n\tcrossVectors( a, b ) {\n\n\t\tconst ax = a.x, ay = a.y, az = a.z;\n\t\tconst bx = b.x, by = b.y, bz = b.z;\n\n\t\tthis.x = ay * bz - az * by;\n\t\tthis.y = az * bx - ax * bz;\n\t\tthis.z = ax * by - ay * bx;\n\n\t\treturn this;\n\n\t}\n\n\tprojectOnVector( v ) {\n\n\t\tconst denominator = v.lengthSq();\n\n\t\tif ( denominator === 0 ) return this.set( 0, 0, 0 );\n\n\t\tconst scalar = v.dot( this ) / denominator;\n\n\t\treturn this.copy( v ).multiplyScalar( scalar );\n\n\t}\n\n\tprojectOnPlane( planeNormal ) {\n\n\t\t_vector.copy( this ).projectOnVector( planeNormal );\n\n\t\treturn this.sub( _vector );\n\n\t}\n\n\treflect( normal ) {\n\n\t\t// reflect incident vector off plane orthogonal to normal\n\t\t// normal is assumed to have unit length\n\n\t\treturn this.sub( _vector.copy( normal ).multiplyScalar( 2 * this.dot( normal ) ) );\n\n\t}\n\n\tangleTo( v ) {\n\n\t\tconst denominator = Math.sqrt( this.lengthSq() * v.lengthSq() );\n\n\t\tif ( denominator === 0 ) return Math.PI / 2;\n\n\t\tconst theta = this.dot( v ) / denominator;\n\n\t\t// clamp, to handle numerical problems\n\n\t\treturn Math.acos( MathUtils.clamp( theta, - 1, 1 ) );\n\n\t}\n\n\tdistanceTo( v ) {\n\n\t\treturn Math.sqrt( this.distanceToSquared( v ) );\n\n\t}\n\n\tdistanceToSquared( v ) {\n\n\t\tconst dx = this.x - v.x, dy = this.y - v.y, dz = this.z - v.z;\n\n\t\treturn dx * dx + dy * dy + dz * dz;\n\n\t}\n\n\tmanhattanDistanceTo( v ) {\n\n\t\treturn Math.abs( this.x - v.x ) + Math.abs( this.y - v.y ) + Math.abs( this.z - v.z );\n\n\t}\n\n\tsetFromSpherical( s ) {\n\n\t\treturn this.setFromSphericalCoords( s.radius, s.phi, s.theta );\n\n\t}\n\n\tsetFromSphericalCoords( radius, phi, theta ) {\n\n\t\tconst sinPhiRadius = Math.sin( phi ) * radius;\n\n\t\tthis.x = sinPhiRadius * Math.sin( theta );\n\t\tthis.y = Math.cos( phi ) * radius;\n\t\tthis.z = sinPhiRadius * Math.cos( theta );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromCylindrical( c ) {\n\n\t\treturn this.setFromCylindricalCoords( c.radius, c.theta, c.y );\n\n\t}\n\n\tsetFromCylindricalCoords( radius, theta, y ) {\n\n\t\tthis.x = radius * Math.sin( theta );\n\t\tthis.y = y;\n\t\tthis.z = radius * Math.cos( theta );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromMatrixPosition( m ) {\n\n\t\tconst e = m.elements;\n\n\t\tthis.x = e[ 12 ];\n\t\tthis.y = e[ 13 ];\n\t\tthis.z = e[ 14 ];\n\n\t\treturn this;\n\n\t}\n\n\tsetFromMatrixScale( m ) {\n\n\t\tconst sx = this.setFromMatrixColumn( m, 0 ).length();\n\t\tconst sy = this.setFromMatrixColumn( m, 1 ).length();\n\t\tconst sz = this.setFromMatrixColumn( m, 2 ).length();\n\n\t\tthis.x = sx;\n\t\tthis.y = sy;\n\t\tthis.z = sz;\n\n\t\treturn this;\n\n\t}\n\n\tsetFromMatrixColumn( m, index ) {\n\n\t\treturn this.fromArray( m.elements, index * 4 );\n\n\t}\n\n\tsetFromMatrix3Column( m, index ) {\n\n\t\treturn this.fromArray( m.elements, index * 3 );\n\n\t}\n\n\tequals( v ) {\n\n\t\treturn ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) );\n\n\t}\n\n\tfromArray( array, offset = 0 ) {\n\n\t\tthis.x = array[ offset ];\n\t\tthis.y = array[ offset + 1 ];\n\t\tthis.z = array[ offset + 2 ];\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tarray[ offset ] = this.x;\n\t\tarray[ offset + 1 ] = this.y;\n\t\tarray[ offset + 2 ] = this.z;\n\n\t\treturn array;\n\n\t}\n\n\tfromBufferAttribute( attribute, index, offset ) {\n\n\t\tif ( offset !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Vector3: offset has been removed from .fromBufferAttribute().' );\n\n\t\t}\n\n\t\tthis.x = attribute.getX( index );\n\t\tthis.y = attribute.getY( index );\n\t\tthis.z = attribute.getZ( index );\n\n\t\treturn this;\n\n\t}\n\n\trandom() {\n\n\t\tthis.x = Math.random();\n\t\tthis.y = Math.random();\n\t\tthis.z = Math.random();\n\n\t\treturn this;\n\n\t}\n\n}\n\nconst _vector = /*@__PURE__*/ new Vector3();\nconst _quaternion = /*@__PURE__*/ new Quaternion();\n\nclass Box3 {\n\n\tconstructor( min, max ) {\n\n\t\tObject.defineProperty( this, 'isBox3', { value: true } );\n\n\t\tthis.min = ( min !== undefined ) ? min : new Vector3( + Infinity, + Infinity, + Infinity );\n\t\tthis.max = ( max !== undefined ) ? max : new Vector3( - Infinity, - Infinity, - Infinity );\n\n\t}\n\n\tset( min, max ) {\n\n\t\tthis.min.copy( min );\n\t\tthis.max.copy( max );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromArray( array ) {\n\n\t\tlet minX = + Infinity;\n\t\tlet minY = + Infinity;\n\t\tlet minZ = + Infinity;\n\n\t\tlet maxX = - Infinity;\n\t\tlet maxY = - Infinity;\n\t\tlet maxZ = - Infinity;\n\n\t\tfor ( let i = 0, l = array.length; i < l; i += 3 ) {\n\n\t\t\tconst x = array[ i ];\n\t\t\tconst y = array[ i + 1 ];\n\t\t\tconst z = array[ i + 2 ];\n\n\t\t\tif ( x < minX ) minX = x;\n\t\t\tif ( y < minY ) minY = y;\n\t\t\tif ( z < minZ ) minZ = z;\n\n\t\t\tif ( x > maxX ) maxX = x;\n\t\t\tif ( y > maxY ) maxY = y;\n\t\t\tif ( z > maxZ ) maxZ = z;\n\n\t\t}\n\n\t\tthis.min.set( minX, minY, minZ );\n\t\tthis.max.set( maxX, maxY, maxZ );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromBufferAttribute( attribute ) {\n\n\t\tlet minX = + Infinity;\n\t\tlet minY = + Infinity;\n\t\tlet minZ = + Infinity;\n\n\t\tlet maxX = - Infinity;\n\t\tlet maxY = - Infinity;\n\t\tlet maxZ = - Infinity;\n\n\t\tfor ( let i = 0, l = attribute.count; i < l; i ++ ) {\n\n\t\t\tconst x = attribute.getX( i );\n\t\t\tconst y = attribute.getY( i );\n\t\t\tconst z = attribute.getZ( i );\n\n\t\t\tif ( x < minX ) minX = x;\n\t\t\tif ( y < minY ) minY = y;\n\t\t\tif ( z < minZ ) minZ = z;\n\n\t\t\tif ( x > maxX ) maxX = x;\n\t\t\tif ( y > maxY ) maxY = y;\n\t\t\tif ( z > maxZ ) maxZ = z;\n\n\t\t}\n\n\t\tthis.min.set( minX, minY, minZ );\n\t\tthis.max.set( maxX, maxY, maxZ );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromPoints( points ) {\n\n\t\tthis.makeEmpty();\n\n\t\tfor ( let i = 0, il = points.length; i < il; i ++ ) {\n\n\t\t\tthis.expandByPoint( points[ i ] );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetFromCenterAndSize( center, size ) {\n\n\t\tconst halfSize = _vector$1.copy( size ).multiplyScalar( 0.5 );\n\n\t\tthis.min.copy( center ).sub( halfSize );\n\t\tthis.max.copy( center ).add( halfSize );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromObject( object ) {\n\n\t\tthis.makeEmpty();\n\n\t\treturn this.expandByObject( object );\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( box ) {\n\n\t\tthis.min.copy( box.min );\n\t\tthis.max.copy( box.max );\n\n\t\treturn this;\n\n\t}\n\n\tmakeEmpty() {\n\n\t\tthis.min.x = this.min.y = this.min.z = + Infinity;\n\t\tthis.max.x = this.max.y = this.max.z = - Infinity;\n\n\t\treturn this;\n\n\t}\n\n\tisEmpty() {\n\n\t\t// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes\n\n\t\treturn ( this.max.x < this.min.x ) || ( this.max.y < this.min.y ) || ( this.max.z < this.min.z );\n\n\t}\n\n\tgetCenter( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Box3: .getCenter() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\treturn this.isEmpty() ? target.set( 0, 0, 0 ) : target.addVectors( this.min, this.max ).multiplyScalar( 0.5 );\n\n\t}\n\n\tgetSize( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Box3: .getSize() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\treturn this.isEmpty() ? target.set( 0, 0, 0 ) : target.subVectors( this.max, this.min );\n\n\t}\n\n\texpandByPoint( point ) {\n\n\t\tthis.min.min( point );\n\t\tthis.max.max( point );\n\n\t\treturn this;\n\n\t}\n\n\texpandByVector( vector ) {\n\n\t\tthis.min.sub( vector );\n\t\tthis.max.add( vector );\n\n\t\treturn this;\n\n\t}\n\n\texpandByScalar( scalar ) {\n\n\t\tthis.min.addScalar( - scalar );\n\t\tthis.max.addScalar( scalar );\n\n\t\treturn this;\n\n\t}\n\n\texpandByObject( object ) {\n\n\t\t// Computes the world-axis-aligned bounding box of an object (including its children),\n\t\t// accounting for both the object's, and children's, world transforms\n\n\t\tobject.updateWorldMatrix( false, false );\n\n\t\tconst geometry = object.geometry;\n\n\t\tif ( geometry !== undefined ) {\n\n\t\t\tif ( geometry.boundingBox === null ) {\n\n\t\t\t\tgeometry.computeBoundingBox();\n\n\t\t\t}\n\n\t\t\t_box.copy( geometry.boundingBox );\n\t\t\t_box.applyMatrix4( object.matrixWorld );\n\n\t\t\tthis.union( _box );\n\n\t\t}\n\n\t\tconst children = object.children;\n\n\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\tthis.expandByObject( children[ i ] );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tcontainsPoint( point ) {\n\n\t\treturn point.x < this.min.x || point.x > this.max.x ||\n\t\t\tpoint.y < this.min.y || point.y > this.max.y ||\n\t\t\tpoint.z < this.min.z || point.z > this.max.z ? false : true;\n\n\t}\n\n\tcontainsBox( box ) {\n\n\t\treturn this.min.x <= box.min.x && box.max.x <= this.max.x &&\n\t\t\tthis.min.y <= box.min.y && box.max.y <= this.max.y &&\n\t\t\tthis.min.z <= box.min.z && box.max.z <= this.max.z;\n\n\t}\n\n\tgetParameter( point, target ) {\n\n\t\t// This can potentially have a divide by zero if the box\n\t\t// has a size dimension of 0.\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Box3: .getParameter() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\treturn target.set(\n\t\t\t( point.x - this.min.x ) / ( this.max.x - this.min.x ),\n\t\t\t( point.y - this.min.y ) / ( this.max.y - this.min.y ),\n\t\t\t( point.z - this.min.z ) / ( this.max.z - this.min.z )\n\t\t);\n\n\t}\n\n\tintersectsBox( box ) {\n\n\t\t// using 6 splitting planes to rule out intersections.\n\t\treturn box.max.x < this.min.x || box.min.x > this.max.x ||\n\t\t\tbox.max.y < this.min.y || box.min.y > this.max.y ||\n\t\t\tbox.max.z < this.min.z || box.min.z > this.max.z ? false : true;\n\n\t}\n\n\tintersectsSphere( sphere ) {\n\n\t\t// Find the point on the AABB closest to the sphere center.\n\t\tthis.clampPoint( sphere.center, _vector$1 );\n\n\t\t// If that point is inside the sphere, the AABB and sphere intersect.\n\t\treturn _vector$1.distanceToSquared( sphere.center ) <= ( sphere.radius * sphere.radius );\n\n\t}\n\n\tintersectsPlane( plane ) {\n\n\t\t// We compute the minimum and maximum dot product values. If those values\n\t\t// are on the same side (back or front) of the plane, then there is no intersection.\n\n\t\tlet min, max;\n\n\t\tif ( plane.normal.x > 0 ) {\n\n\t\t\tmin = plane.normal.x * this.min.x;\n\t\t\tmax = plane.normal.x * this.max.x;\n\n\t\t} else {\n\n\t\t\tmin = plane.normal.x * this.max.x;\n\t\t\tmax = plane.normal.x * this.min.x;\n\n\t\t}\n\n\t\tif ( plane.normal.y > 0 ) {\n\n\t\t\tmin += plane.normal.y * this.min.y;\n\t\t\tmax += plane.normal.y * this.max.y;\n\n\t\t} else {\n\n\t\t\tmin += plane.normal.y * this.max.y;\n\t\t\tmax += plane.normal.y * this.min.y;\n\n\t\t}\n\n\t\tif ( plane.normal.z > 0 ) {\n\n\t\t\tmin += plane.normal.z * this.min.z;\n\t\t\tmax += plane.normal.z * this.max.z;\n\n\t\t} else {\n\n\t\t\tmin += plane.normal.z * this.max.z;\n\t\t\tmax += plane.normal.z * this.min.z;\n\n\t\t}\n\n\t\treturn ( min <= - plane.constant && max >= - plane.constant );\n\n\t}\n\n\tintersectsTriangle( triangle ) {\n\n\t\tif ( this.isEmpty() ) {\n\n\t\t\treturn false;\n\n\t\t}\n\n\t\t// compute box center and extents\n\t\tthis.getCenter( _center );\n\t\t_extents.subVectors( this.max, _center );\n\n\t\t// translate triangle to aabb origin\n\t\t_v0.subVectors( triangle.a, _center );\n\t\t_v1.subVectors( triangle.b, _center );\n\t\t_v2.subVectors( triangle.c, _center );\n\n\t\t// compute edge vectors for triangle\n\t\t_f0.subVectors( _v1, _v0 );\n\t\t_f1.subVectors( _v2, _v1 );\n\t\t_f2.subVectors( _v0, _v2 );\n\n\t\t// test against axes that are given by cross product combinations of the edges of the triangle and the edges of the aabb\n\t\t// make an axis testing of each of the 3 sides of the aabb against each of the 3 sides of the triangle = 9 axis of separation\n\t\t// axis_ij = u_i x f_j (u0, u1, u2 = face normals of aabb = x,y,z axes vectors since aabb is axis aligned)\n\t\tlet axes = [\n\t\t\t0, - _f0.z, _f0.y, 0, - _f1.z, _f1.y, 0, - _f2.z, _f2.y,\n\t\t\t_f0.z, 0, - _f0.x, _f1.z, 0, - _f1.x, _f2.z, 0, - _f2.x,\n\t\t\t- _f0.y, _f0.x, 0, - _f1.y, _f1.x, 0, - _f2.y, _f2.x, 0\n\t\t];\n\t\tif ( ! satForAxes( axes, _v0, _v1, _v2, _extents ) ) {\n\n\t\t\treturn false;\n\n\t\t}\n\n\t\t// test 3 face normals from the aabb\n\t\taxes = [ 1, 0, 0, 0, 1, 0, 0, 0, 1 ];\n\t\tif ( ! satForAxes( axes, _v0, _v1, _v2, _extents ) ) {\n\n\t\t\treturn false;\n\n\t\t}\n\n\t\t// finally testing the face normal of the triangle\n\t\t// use already existing triangle edge vectors here\n\t\t_triangleNormal.crossVectors( _f0, _f1 );\n\t\taxes = [ _triangleNormal.x, _triangleNormal.y, _triangleNormal.z ];\n\n\t\treturn satForAxes( axes, _v0, _v1, _v2, _extents );\n\n\t}\n\n\tclampPoint( point, target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Box3: .clampPoint() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\treturn target.copy( point ).clamp( this.min, this.max );\n\n\t}\n\n\tdistanceToPoint( point ) {\n\n\t\tconst clampedPoint = _vector$1.copy( point ).clamp( this.min, this.max );\n\n\t\treturn clampedPoint.sub( point ).length();\n\n\t}\n\n\tgetBoundingSphere( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.error( 'THREE.Box3: .getBoundingSphere() target is now required' );\n\t\t\t//target = new Sphere(); // removed to avoid cyclic dependency\n\n\t\t}\n\n\t\tthis.getCenter( target.center );\n\n\t\ttarget.radius = this.getSize( _vector$1 ).length() * 0.5;\n\n\t\treturn target;\n\n\t}\n\n\tintersect( box ) {\n\n\t\tthis.min.max( box.min );\n\t\tthis.max.min( box.max );\n\n\t\t// ensure that if there is no overlap, the result is fully empty, not slightly empty with non-inf/+inf values that will cause subsequence intersects to erroneously return valid values.\n\t\tif ( this.isEmpty() ) this.makeEmpty();\n\n\t\treturn this;\n\n\t}\n\n\tunion( box ) {\n\n\t\tthis.min.min( box.min );\n\t\tthis.max.max( box.max );\n\n\t\treturn this;\n\n\t}\n\n\tapplyMatrix4( matrix ) {\n\n\t\t// transform of empty box is an empty box.\n\t\tif ( this.isEmpty() ) return this;\n\n\t\t// NOTE: I am using a binary pattern to specify all 2^3 combinations below\n\t\t_points[ 0 ].set( this.min.x, this.min.y, this.min.z ).applyMatrix4( matrix ); // 000\n\t\t_points[ 1 ].set( this.min.x, this.min.y, this.max.z ).applyMatrix4( matrix ); // 001\n\t\t_points[ 2 ].set( this.min.x, this.max.y, this.min.z ).applyMatrix4( matrix ); // 010\n\t\t_points[ 3 ].set( this.min.x, this.max.y, this.max.z ).applyMatrix4( matrix ); // 011\n\t\t_points[ 4 ].set( this.max.x, this.min.y, this.min.z ).applyMatrix4( matrix ); // 100\n\t\t_points[ 5 ].set( this.max.x, this.min.y, this.max.z ).applyMatrix4( matrix ); // 101\n\t\t_points[ 6 ].set( this.max.x, this.max.y, this.min.z ).applyMatrix4( matrix ); // 110\n\t\t_points[ 7 ].set( this.max.x, this.max.y, this.max.z ).applyMatrix4( matrix ); // 111\n\n\t\tthis.setFromPoints( _points );\n\n\t\treturn this;\n\n\t}\n\n\ttranslate( offset ) {\n\n\t\tthis.min.add( offset );\n\t\tthis.max.add( offset );\n\n\t\treturn this;\n\n\t}\n\n\tequals( box ) {\n\n\t\treturn box.min.equals( this.min ) && box.max.equals( this.max );\n\n\t}\n\n}\n\nfunction satForAxes( axes, v0, v1, v2, extents ) {\n\n\tfor ( let i = 0, j = axes.length - 3; i <= j; i += 3 ) {\n\n\t\t_testAxis.fromArray( axes, i );\n\t\t// project the aabb onto the seperating axis\n\t\tconst r = extents.x * Math.abs( _testAxis.x ) + extents.y * Math.abs( _testAxis.y ) + extents.z * Math.abs( _testAxis.z );\n\t\t// project all 3 vertices of the triangle onto the seperating axis\n\t\tconst p0 = v0.dot( _testAxis );\n\t\tconst p1 = v1.dot( _testAxis );\n\t\tconst p2 = v2.dot( _testAxis );\n\t\t// actual test, basically see if either of the most extreme of the triangle points intersects r\n\t\tif ( Math.max( - Math.max( p0, p1, p2 ), Math.min( p0, p1, p2 ) ) > r ) {\n\n\t\t\t// points of the projected triangle are outside the projected half-length of the aabb\n\t\t\t// the axis is seperating and we can exit\n\t\t\treturn false;\n\n\t\t}\n\n\t}\n\n\treturn true;\n\n}\n\nconst _points = [\n\t/*@__PURE__*/ new Vector3(),\n\t/*@__PURE__*/ new Vector3(),\n\t/*@__PURE__*/ new Vector3(),\n\t/*@__PURE__*/ new Vector3(),\n\t/*@__PURE__*/ new Vector3(),\n\t/*@__PURE__*/ new Vector3(),\n\t/*@__PURE__*/ new Vector3(),\n\t/*@__PURE__*/ new Vector3()\n];\n\nconst _vector$1 = /*@__PURE__*/ new Vector3();\n\nconst _box = /*@__PURE__*/ new Box3();\n\n// triangle centered vertices\n\nconst _v0 = /*@__PURE__*/ new Vector3();\nconst _v1 = /*@__PURE__*/ new Vector3();\nconst _v2 = /*@__PURE__*/ new Vector3();\n\n// triangle edge vectors\n\nconst _f0 = /*@__PURE__*/ new Vector3();\nconst _f1 = /*@__PURE__*/ new Vector3();\nconst _f2 = /*@__PURE__*/ new Vector3();\n\nconst _center = /*@__PURE__*/ new Vector3();\nconst _extents = /*@__PURE__*/ new Vector3();\nconst _triangleNormal = /*@__PURE__*/ new Vector3();\nconst _testAxis = /*@__PURE__*/ new Vector3();\n\nconst _box$1 = /*@__PURE__*/ new Box3();\n\nclass Sphere {\n\n\tconstructor( center, radius ) {\n\n\t\tthis.center = ( center !== undefined ) ? center : new Vector3();\n\t\tthis.radius = ( radius !== undefined ) ? radius : - 1;\n\n\t}\n\n\tset( center, radius ) {\n\n\t\tthis.center.copy( center );\n\t\tthis.radius = radius;\n\n\t\treturn this;\n\n\t}\n\n\tsetFromPoints( points, optionalCenter ) {\n\n\t\tconst center = this.center;\n\n\t\tif ( optionalCenter !== undefined ) {\n\n\t\t\tcenter.copy( optionalCenter );\n\n\t\t} else {\n\n\t\t\t_box$1.setFromPoints( points ).getCenter( center );\n\n\t\t}\n\n\t\tlet maxRadiusSq = 0;\n\n\t\tfor ( let i = 0, il = points.length; i < il; i ++ ) {\n\n\t\t\tmaxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( points[ i ] ) );\n\n\t\t}\n\n\t\tthis.radius = Math.sqrt( maxRadiusSq );\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( sphere ) {\n\n\t\tthis.center.copy( sphere.center );\n\t\tthis.radius = sphere.radius;\n\n\t\treturn this;\n\n\t}\n\n\tisEmpty() {\n\n\t\treturn ( this.radius < 0 );\n\n\t}\n\n\tmakeEmpty() {\n\n\t\tthis.center.set( 0, 0, 0 );\n\t\tthis.radius = - 1;\n\n\t\treturn this;\n\n\t}\n\n\tcontainsPoint( point ) {\n\n\t\treturn ( point.distanceToSquared( this.center ) <= ( this.radius * this.radius ) );\n\n\t}\n\n\tdistanceToPoint( point ) {\n\n\t\treturn ( point.distanceTo( this.center ) - this.radius );\n\n\t}\n\n\tintersectsSphere( sphere ) {\n\n\t\tconst radiusSum = this.radius + sphere.radius;\n\n\t\treturn sphere.center.distanceToSquared( this.center ) <= ( radiusSum * radiusSum );\n\n\t}\n\n\tintersectsBox( box ) {\n\n\t\treturn box.intersectsSphere( this );\n\n\t}\n\n\tintersectsPlane( plane ) {\n\n\t\treturn Math.abs( plane.distanceToPoint( this.center ) ) <= this.radius;\n\n\t}\n\n\tclampPoint( point, target ) {\n\n\t\tconst deltaLengthSq = this.center.distanceToSquared( point );\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Sphere: .clampPoint() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\ttarget.copy( point );\n\n\t\tif ( deltaLengthSq > ( this.radius * this.radius ) ) {\n\n\t\t\ttarget.sub( this.center ).normalize();\n\t\t\ttarget.multiplyScalar( this.radius ).add( this.center );\n\n\t\t}\n\n\t\treturn target;\n\n\t}\n\n\tgetBoundingBox( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Sphere: .getBoundingBox() target is now required' );\n\t\t\ttarget = new Box3();\n\n\t\t}\n\n\t\tif ( this.isEmpty() ) {\n\n\t\t\t// Empty sphere produces empty bounding box\n\t\t\ttarget.makeEmpty();\n\t\t\treturn target;\n\n\t\t}\n\n\t\ttarget.set( this.center, this.center );\n\t\ttarget.expandByScalar( this.radius );\n\n\t\treturn target;\n\n\t}\n\n\tapplyMatrix4( matrix ) {\n\n\t\tthis.center.applyMatrix4( matrix );\n\t\tthis.radius = this.radius * matrix.getMaxScaleOnAxis();\n\n\t\treturn this;\n\n\t}\n\n\ttranslate( offset ) {\n\n\t\tthis.center.add( offset );\n\n\t\treturn this;\n\n\t}\n\n\tequals( sphere ) {\n\n\t\treturn sphere.center.equals( this.center ) && ( sphere.radius === this.radius );\n\n\t}\n\n}\n\nconst _vector$2 = /*@__PURE__*/ new Vector3();\nconst _segCenter = /*@__PURE__*/ new Vector3();\nconst _segDir = /*@__PURE__*/ new Vector3();\nconst _diff = /*@__PURE__*/ new Vector3();\n\nconst _edge1 = /*@__PURE__*/ new Vector3();\nconst _edge2 = /*@__PURE__*/ new Vector3();\nconst _normal = /*@__PURE__*/ new Vector3();\n\nclass Ray {\n\n\tconstructor( origin, direction ) {\n\n\t\tthis.origin = ( origin !== undefined ) ? origin : new Vector3();\n\t\tthis.direction = ( direction !== undefined ) ? direction : new Vector3( 0, 0, - 1 );\n\n\t}\n\n\tset( origin, direction ) {\n\n\t\tthis.origin.copy( origin );\n\t\tthis.direction.copy( direction );\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( ray ) {\n\n\t\tthis.origin.copy( ray.origin );\n\t\tthis.direction.copy( ray.direction );\n\n\t\treturn this;\n\n\t}\n\n\tat( t, target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Ray: .at() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\treturn target.copy( this.direction ).multiplyScalar( t ).add( this.origin );\n\n\t}\n\n\tlookAt( v ) {\n\n\t\tthis.direction.copy( v ).sub( this.origin ).normalize();\n\n\t\treturn this;\n\n\t}\n\n\trecast( t ) {\n\n\t\tthis.origin.copy( this.at( t, _vector$2 ) );\n\n\t\treturn this;\n\n\t}\n\n\tclosestPointToPoint( point, target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Ray: .closestPointToPoint() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\ttarget.subVectors( point, this.origin );\n\n\t\tconst directionDistance = target.dot( this.direction );\n\n\t\tif ( directionDistance < 0 ) {\n\n\t\t\treturn target.copy( this.origin );\n\n\t\t}\n\n\t\treturn target.copy( this.direction ).multiplyScalar( directionDistance ).add( this.origin );\n\n\t}\n\n\tdistanceToPoint( point ) {\n\n\t\treturn Math.sqrt( this.distanceSqToPoint( point ) );\n\n\t}\n\n\tdistanceSqToPoint( point ) {\n\n\t\tconst directionDistance = _vector$2.subVectors( point, this.origin ).dot( this.direction );\n\n\t\t// point behind the ray\n\n\t\tif ( directionDistance < 0 ) {\n\n\t\t\treturn this.origin.distanceToSquared( point );\n\n\t\t}\n\n\t\t_vector$2.copy( this.direction ).multiplyScalar( directionDistance ).add( this.origin );\n\n\t\treturn _vector$2.distanceToSquared( point );\n\n\t}\n\n\tdistanceSqToSegment( v0, v1, optionalPointOnRay, optionalPointOnSegment ) {\n\n\t\t// from http://www.geometrictools.com/GTEngine/Include/Mathematics/GteDistRaySegment.h\n\t\t// It returns the min distance between the ray and the segment\n\t\t// defined by v0 and v1\n\t\t// It can also set two optional targets :\n\t\t// - The closest point on the ray\n\t\t// - The closest point on the segment\n\n\t\t_segCenter.copy( v0 ).add( v1 ).multiplyScalar( 0.5 );\n\t\t_segDir.copy( v1 ).sub( v0 ).normalize();\n\t\t_diff.copy( this.origin ).sub( _segCenter );\n\n\t\tconst segExtent = v0.distanceTo( v1 ) * 0.5;\n\t\tconst a01 = - this.direction.dot( _segDir );\n\t\tconst b0 = _diff.dot( this.direction );\n\t\tconst b1 = - _diff.dot( _segDir );\n\t\tconst c = _diff.lengthSq();\n\t\tconst det = Math.abs( 1 - a01 * a01 );\n\t\tlet s0, s1, sqrDist, extDet;\n\n\t\tif ( det > 0 ) {\n\n\t\t\t// The ray and segment are not parallel.\n\n\t\t\ts0 = a01 * b1 - b0;\n\t\t\ts1 = a01 * b0 - b1;\n\t\t\textDet = segExtent * det;\n\n\t\t\tif ( s0 >= 0 ) {\n\n\t\t\t\tif ( s1 >= - extDet ) {\n\n\t\t\t\t\tif ( s1 <= extDet ) {\n\n\t\t\t\t\t\t// region 0\n\t\t\t\t\t\t// Minimum at interior points of ray and segment.\n\n\t\t\t\t\t\tconst invDet = 1 / det;\n\t\t\t\t\t\ts0 *= invDet;\n\t\t\t\t\t\ts1 *= invDet;\n\t\t\t\t\t\tsqrDist = s0 * ( s0 + a01 * s1 + 2 * b0 ) + s1 * ( a01 * s0 + s1 + 2 * b1 ) + c;\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\t// region 1\n\n\t\t\t\t\t\ts1 = segExtent;\n\t\t\t\t\t\ts0 = Math.max( 0, - ( a01 * s1 + b0 ) );\n\t\t\t\t\t\tsqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// region 5\n\n\t\t\t\t\ts1 = - segExtent;\n\t\t\t\t\ts0 = Math.max( 0, - ( a01 * s1 + b0 ) );\n\t\t\t\t\tsqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tif ( s1 <= - extDet ) {\n\n\t\t\t\t\t// region 4\n\n\t\t\t\t\ts0 = Math.max( 0, - ( - a01 * segExtent + b0 ) );\n\t\t\t\t\ts1 = ( s0 > 0 ) ? - segExtent : Math.min( Math.max( - segExtent, - b1 ), segExtent );\n\t\t\t\t\tsqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;\n\n\t\t\t\t} else if ( s1 <= extDet ) {\n\n\t\t\t\t\t// region 3\n\n\t\t\t\t\ts0 = 0;\n\t\t\t\t\ts1 = Math.min( Math.max( - segExtent, - b1 ), segExtent );\n\t\t\t\t\tsqrDist = s1 * ( s1 + 2 * b1 ) + c;\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// region 2\n\n\t\t\t\t\ts0 = Math.max( 0, - ( a01 * segExtent + b0 ) );\n\t\t\t\t\ts1 = ( s0 > 0 ) ? segExtent : Math.min( Math.max( - segExtent, - b1 ), segExtent );\n\t\t\t\t\tsqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\t// Ray and segment are parallel.\n\n\t\t\ts1 = ( a01 > 0 ) ? - segExtent : segExtent;\n\t\t\ts0 = Math.max( 0, - ( a01 * s1 + b0 ) );\n\t\t\tsqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;\n\n\t\t}\n\n\t\tif ( optionalPointOnRay ) {\n\n\t\t\toptionalPointOnRay.copy( this.direction ).multiplyScalar( s0 ).add( this.origin );\n\n\t\t}\n\n\t\tif ( optionalPointOnSegment ) {\n\n\t\t\toptionalPointOnSegment.copy( _segDir ).multiplyScalar( s1 ).add( _segCenter );\n\n\t\t}\n\n\t\treturn sqrDist;\n\n\t}\n\n\tintersectSphere( sphere, target ) {\n\n\t\t_vector$2.subVectors( sphere.center, this.origin );\n\t\tconst tca = _vector$2.dot( this.direction );\n\t\tconst d2 = _vector$2.dot( _vector$2 ) - tca * tca;\n\t\tconst radius2 = sphere.radius * sphere.radius;\n\n\t\tif ( d2 > radius2 ) return null;\n\n\t\tconst thc = Math.sqrt( radius2 - d2 );\n\n\t\t// t0 = first intersect point - entrance on front of sphere\n\t\tconst t0 = tca - thc;\n\n\t\t// t1 = second intersect point - exit point on back of sphere\n\t\tconst t1 = tca + thc;\n\n\t\t// test to see if both t0 and t1 are behind the ray - if so, return null\n\t\tif ( t0 < 0 && t1 < 0 ) return null;\n\n\t\t// test to see if t0 is behind the ray:\n\t\t// if it is, the ray is inside the sphere, so return the second exit point scaled by t1,\n\t\t// in order to always return an intersect point that is in front of the ray.\n\t\tif ( t0 < 0 ) return this.at( t1, target );\n\n\t\t// else t0 is in front of the ray, so return the first collision point scaled by t0\n\t\treturn this.at( t0, target );\n\n\t}\n\n\tintersectsSphere( sphere ) {\n\n\t\treturn this.distanceSqToPoint( sphere.center ) <= ( sphere.radius * sphere.radius );\n\n\t}\n\n\tdistanceToPlane( plane ) {\n\n\t\tconst denominator = plane.normal.dot( this.direction );\n\n\t\tif ( denominator === 0 ) {\n\n\t\t\t// line is coplanar, return origin\n\t\t\tif ( plane.distanceToPoint( this.origin ) === 0 ) {\n\n\t\t\t\treturn 0;\n\n\t\t\t}\n\n\t\t\t// Null is preferable to undefined since undefined means.... it is undefined\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\tconst t = - ( this.origin.dot( plane.normal ) + plane.constant ) / denominator;\n\n\t\t// Return if the ray never intersects the plane\n\n\t\treturn t >= 0 ? t : null;\n\n\t}\n\n\tintersectPlane( plane, target ) {\n\n\t\tconst t = this.distanceToPlane( plane );\n\n\t\tif ( t === null ) {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\treturn this.at( t, target );\n\n\t}\n\n\tintersectsPlane( plane ) {\n\n\t\t// check if the ray lies on the plane first\n\n\t\tconst distToPoint = plane.distanceToPoint( this.origin );\n\n\t\tif ( distToPoint === 0 ) {\n\n\t\t\treturn true;\n\n\t\t}\n\n\t\tconst denominator = plane.normal.dot( this.direction );\n\n\t\tif ( denominator * distToPoint < 0 ) {\n\n\t\t\treturn true;\n\n\t\t}\n\n\t\t// ray origin is behind the plane (and is pointing behind it)\n\n\t\treturn false;\n\n\t}\n\n\tintersectBox( box, target ) {\n\n\t\tlet tmin, tmax, tymin, tymax, tzmin, tzmax;\n\n\t\tconst invdirx = 1 / this.direction.x,\n\t\t\tinvdiry = 1 / this.direction.y,\n\t\t\tinvdirz = 1 / this.direction.z;\n\n\t\tconst origin = this.origin;\n\n\t\tif ( invdirx >= 0 ) {\n\n\t\t\ttmin = ( box.min.x - origin.x ) * invdirx;\n\t\t\ttmax = ( box.max.x - origin.x ) * invdirx;\n\n\t\t} else {\n\n\t\t\ttmin = ( box.max.x - origin.x ) * invdirx;\n\t\t\ttmax = ( box.min.x - origin.x ) * invdirx;\n\n\t\t}\n\n\t\tif ( invdiry >= 0 ) {\n\n\t\t\ttymin = ( box.min.y - origin.y ) * invdiry;\n\t\t\ttymax = ( box.max.y - origin.y ) * invdiry;\n\n\t\t} else {\n\n\t\t\ttymin = ( box.max.y - origin.y ) * invdiry;\n\t\t\ttymax = ( box.min.y - origin.y ) * invdiry;\n\n\t\t}\n\n\t\tif ( ( tmin > tymax ) || ( tymin > tmax ) ) return null;\n\n\t\t// These lines also handle the case where tmin or tmax is NaN\n\t\t// (result of 0 * Infinity). x !== x returns true if x is NaN\n\n\t\tif ( tymin > tmin || tmin !== tmin ) tmin = tymin;\n\n\t\tif ( tymax < tmax || tmax !== tmax ) tmax = tymax;\n\n\t\tif ( invdirz >= 0 ) {\n\n\t\t\ttzmin = ( box.min.z - origin.z ) * invdirz;\n\t\t\ttzmax = ( box.max.z - origin.z ) * invdirz;\n\n\t\t} else {\n\n\t\t\ttzmin = ( box.max.z - origin.z ) * invdirz;\n\t\t\ttzmax = ( box.min.z - origin.z ) * invdirz;\n\n\t\t}\n\n\t\tif ( ( tmin > tzmax ) || ( tzmin > tmax ) ) return null;\n\n\t\tif ( tzmin > tmin || tmin !== tmin ) tmin = tzmin;\n\n\t\tif ( tzmax < tmax || tmax !== tmax ) tmax = tzmax;\n\n\t\t//return point closest to the ray (positive side)\n\n\t\tif ( tmax < 0 ) return null;\n\n\t\treturn this.at( tmin >= 0 ? tmin : tmax, target );\n\n\t}\n\n\tintersectsBox( box ) {\n\n\t\treturn this.intersectBox( box, _vector$2 ) !== null;\n\n\t}\n\n\tintersectTriangle( a, b, c, backfaceCulling, target ) {\n\n\t\t// Compute the offset origin, edges, and normal.\n\n\t\t// from http://www.geometrictools.com/GTEngine/Include/Mathematics/GteIntrRay3Triangle3.h\n\n\t\t_edge1.subVectors( b, a );\n\t\t_edge2.subVectors( c, a );\n\t\t_normal.crossVectors( _edge1, _edge2 );\n\n\t\t// Solve Q + t*D = b1*E1 + b2*E2 (Q = kDiff, D = ray direction,\n\t\t// E1 = kEdge1, E2 = kEdge2, N = Cross(E1,E2)) by\n\t\t//   |Dot(D,N)|*b1 = sign(Dot(D,N))*Dot(D,Cross(Q,E2))\n\t\t//   |Dot(D,N)|*b2 = sign(Dot(D,N))*Dot(D,Cross(E1,Q))\n\t\t//   |Dot(D,N)|*t = -sign(Dot(D,N))*Dot(Q,N)\n\t\tlet DdN = this.direction.dot( _normal );\n\t\tlet sign;\n\n\t\tif ( DdN > 0 ) {\n\n\t\t\tif ( backfaceCulling ) return null;\n\t\t\tsign = 1;\n\n\t\t} else if ( DdN < 0 ) {\n\n\t\t\tsign = - 1;\n\t\t\tDdN = - DdN;\n\n\t\t} else {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\t_diff.subVectors( this.origin, a );\n\t\tconst DdQxE2 = sign * this.direction.dot( _edge2.crossVectors( _diff, _edge2 ) );\n\n\t\t// b1 < 0, no intersection\n\t\tif ( DdQxE2 < 0 ) {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\tconst DdE1xQ = sign * this.direction.dot( _edge1.cross( _diff ) );\n\n\t\t// b2 < 0, no intersection\n\t\tif ( DdE1xQ < 0 ) {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\t// b1+b2 > 1, no intersection\n\t\tif ( DdQxE2 + DdE1xQ > DdN ) {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\t// Line intersects triangle, check if ray does.\n\t\tconst QdN = - sign * _diff.dot( _normal );\n\n\t\t// t < 0, no intersection\n\t\tif ( QdN < 0 ) {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\t// Ray intersects triangle.\n\t\treturn this.at( QdN / DdN, target );\n\n\t}\n\n\tapplyMatrix4( matrix4 ) {\n\n\t\tthis.origin.applyMatrix4( matrix4 );\n\t\tthis.direction.transformDirection( matrix4 );\n\n\t\treturn this;\n\n\t}\n\n\tequals( ray ) {\n\n\t\treturn ray.origin.equals( this.origin ) && ray.direction.equals( this.direction );\n\n\t}\n\n}\n\nclass Matrix4 {\n\n\tconstructor() {\n\n\t\tObject.defineProperty( this, 'isMatrix4', { value: true } );\n\n\t\tthis.elements = [\n\n\t\t\t1, 0, 0, 0,\n\t\t\t0, 1, 0, 0,\n\t\t\t0, 0, 1, 0,\n\t\t\t0, 0, 0, 1\n\n\t\t];\n\n\t\tif ( arguments.length > 0 ) {\n\n\t\t\tconsole.error( 'THREE.Matrix4: the constructor no longer reads arguments. use .set() instead.' );\n\n\t\t}\n\n\t}\n\n\tset( n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44 ) {\n\n\t\tconst te = this.elements;\n\n\t\tte[ 0 ] = n11; te[ 4 ] = n12; te[ 8 ] = n13; te[ 12 ] = n14;\n\t\tte[ 1 ] = n21; te[ 5 ] = n22; te[ 9 ] = n23; te[ 13 ] = n24;\n\t\tte[ 2 ] = n31; te[ 6 ] = n32; te[ 10 ] = n33; te[ 14 ] = n34;\n\t\tte[ 3 ] = n41; te[ 7 ] = n42; te[ 11 ] = n43; te[ 15 ] = n44;\n\n\t\treturn this;\n\n\t}\n\n\tidentity() {\n\n\t\tthis.set(\n\n\t\t\t1, 0, 0, 0,\n\t\t\t0, 1, 0, 0,\n\t\t\t0, 0, 1, 0,\n\t\t\t0, 0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new Matrix4().fromArray( this.elements );\n\n\t}\n\n\tcopy( m ) {\n\n\t\tconst te = this.elements;\n\t\tconst me = m.elements;\n\n\t\tte[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ]; te[ 3 ] = me[ 3 ];\n\t\tte[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ]; te[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ];\n\t\tte[ 8 ] = me[ 8 ]; te[ 9 ] = me[ 9 ]; te[ 10 ] = me[ 10 ]; te[ 11 ] = me[ 11 ];\n\t\tte[ 12 ] = me[ 12 ]; te[ 13 ] = me[ 13 ]; te[ 14 ] = me[ 14 ]; te[ 15 ] = me[ 15 ];\n\n\t\treturn this;\n\n\t}\n\n\tcopyPosition( m ) {\n\n\t\tconst te = this.elements, me = m.elements;\n\n\t\tte[ 12 ] = me[ 12 ];\n\t\tte[ 13 ] = me[ 13 ];\n\t\tte[ 14 ] = me[ 14 ];\n\n\t\treturn this;\n\n\t}\n\n\textractBasis( xAxis, yAxis, zAxis ) {\n\n\t\txAxis.setFromMatrixColumn( this, 0 );\n\t\tyAxis.setFromMatrixColumn( this, 1 );\n\t\tzAxis.setFromMatrixColumn( this, 2 );\n\n\t\treturn this;\n\n\t}\n\n\tmakeBasis( xAxis, yAxis, zAxis ) {\n\n\t\tthis.set(\n\t\t\txAxis.x, yAxis.x, zAxis.x, 0,\n\t\t\txAxis.y, yAxis.y, zAxis.y, 0,\n\t\t\txAxis.z, yAxis.z, zAxis.z, 0,\n\t\t\t0, 0, 0, 1\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\textractRotation( m ) {\n\n\t\t// this method does not support reflection matrices\n\n\t\tconst te = this.elements;\n\t\tconst me = m.elements;\n\n\t\tconst scaleX = 1 / _v1$1.setFromMatrixColumn( m, 0 ).length();\n\t\tconst scaleY = 1 / _v1$1.setFromMatrixColumn( m, 1 ).length();\n\t\tconst scaleZ = 1 / _v1$1.setFromMatrixColumn( m, 2 ).length();\n\n\t\tte[ 0 ] = me[ 0 ] * scaleX;\n\t\tte[ 1 ] = me[ 1 ] * scaleX;\n\t\tte[ 2 ] = me[ 2 ] * scaleX;\n\t\tte[ 3 ] = 0;\n\n\t\tte[ 4 ] = me[ 4 ] * scaleY;\n\t\tte[ 5 ] = me[ 5 ] * scaleY;\n\t\tte[ 6 ] = me[ 6 ] * scaleY;\n\t\tte[ 7 ] = 0;\n\n\t\tte[ 8 ] = me[ 8 ] * scaleZ;\n\t\tte[ 9 ] = me[ 9 ] * scaleZ;\n\t\tte[ 10 ] = me[ 10 ] * scaleZ;\n\t\tte[ 11 ] = 0;\n\n\t\tte[ 12 ] = 0;\n\t\tte[ 13 ] = 0;\n\t\tte[ 14 ] = 0;\n\t\tte[ 15 ] = 1;\n\n\t\treturn this;\n\n\t}\n\n\tmakeRotationFromEuler( euler ) {\n\n\t\tif ( ! ( euler && euler.isEuler ) ) {\n\n\t\t\tconsole.error( 'THREE.Matrix4: .makeRotationFromEuler() now expects a Euler rotation rather than a Vector3 and order.' );\n\n\t\t}\n\n\t\tconst te = this.elements;\n\n\t\tconst x = euler.x, y = euler.y, z = euler.z;\n\t\tconst a = Math.cos( x ), b = Math.sin( x );\n\t\tconst c = Math.cos( y ), d = Math.sin( y );\n\t\tconst e = Math.cos( z ), f = Math.sin( z );\n\n\t\tif ( euler.order === 'XYZ' ) {\n\n\t\t\tconst ae = a * e, af = a * f, be = b * e, bf = b * f;\n\n\t\t\tte[ 0 ] = c * e;\n\t\t\tte[ 4 ] = - c * f;\n\t\t\tte[ 8 ] = d;\n\n\t\t\tte[ 1 ] = af + be * d;\n\t\t\tte[ 5 ] = ae - bf * d;\n\t\t\tte[ 9 ] = - b * c;\n\n\t\t\tte[ 2 ] = bf - ae * d;\n\t\t\tte[ 6 ] = be + af * d;\n\t\t\tte[ 10 ] = a * c;\n\n\t\t} else if ( euler.order === 'YXZ' ) {\n\n\t\t\tconst ce = c * e, cf = c * f, de = d * e, df = d * f;\n\n\t\t\tte[ 0 ] = ce + df * b;\n\t\t\tte[ 4 ] = de * b - cf;\n\t\t\tte[ 8 ] = a * d;\n\n\t\t\tte[ 1 ] = a * f;\n\t\t\tte[ 5 ] = a * e;\n\t\t\tte[ 9 ] = - b;\n\n\t\t\tte[ 2 ] = cf * b - de;\n\t\t\tte[ 6 ] = df + ce * b;\n\t\t\tte[ 10 ] = a * c;\n\n\t\t} else if ( euler.order === 'ZXY' ) {\n\n\t\t\tconst ce = c * e, cf = c * f, de = d * e, df = d * f;\n\n\t\t\tte[ 0 ] = ce - df * b;\n\t\t\tte[ 4 ] = - a * f;\n\t\t\tte[ 8 ] = de + cf * b;\n\n\t\t\tte[ 1 ] = cf + de * b;\n\t\t\tte[ 5 ] = a * e;\n\t\t\tte[ 9 ] = df - ce * b;\n\n\t\t\tte[ 2 ] = - a * d;\n\t\t\tte[ 6 ] = b;\n\t\t\tte[ 10 ] = a * c;\n\n\t\t} else if ( euler.order === 'ZYX' ) {\n\n\t\t\tconst ae = a * e, af = a * f, be = b * e, bf = b * f;\n\n\t\t\tte[ 0 ] = c * e;\n\t\t\tte[ 4 ] = be * d - af;\n\t\t\tte[ 8 ] = ae * d + bf;\n\n\t\t\tte[ 1 ] = c * f;\n\t\t\tte[ 5 ] = bf * d + ae;\n\t\t\tte[ 9 ] = af * d - be;\n\n\t\t\tte[ 2 ] = - d;\n\t\t\tte[ 6 ] = b * c;\n\t\t\tte[ 10 ] = a * c;\n\n\t\t} else if ( euler.order === 'YZX' ) {\n\n\t\t\tconst ac = a * c, ad = a * d, bc = b * c, bd = b * d;\n\n\t\t\tte[ 0 ] = c * e;\n\t\t\tte[ 4 ] = bd - ac * f;\n\t\t\tte[ 8 ] = bc * f + ad;\n\n\t\t\tte[ 1 ] = f;\n\t\t\tte[ 5 ] = a * e;\n\t\t\tte[ 9 ] = - b * e;\n\n\t\t\tte[ 2 ] = - d * e;\n\t\t\tte[ 6 ] = ad * f + bc;\n\t\t\tte[ 10 ] = ac - bd * f;\n\n\t\t} else if ( euler.order === 'XZY' ) {\n\n\t\t\tconst ac = a * c, ad = a * d, bc = b * c, bd = b * d;\n\n\t\t\tte[ 0 ] = c * e;\n\t\t\tte[ 4 ] = - f;\n\t\t\tte[ 8 ] = d * e;\n\n\t\t\tte[ 1 ] = ac * f + bd;\n\t\t\tte[ 5 ] = a * e;\n\t\t\tte[ 9 ] = ad * f - bc;\n\n\t\t\tte[ 2 ] = bc * f - ad;\n\t\t\tte[ 6 ] = b * e;\n\t\t\tte[ 10 ] = bd * f + ac;\n\n\t\t}\n\n\t\t// bottom row\n\t\tte[ 3 ] = 0;\n\t\tte[ 7 ] = 0;\n\t\tte[ 11 ] = 0;\n\n\t\t// last column\n\t\tte[ 12 ] = 0;\n\t\tte[ 13 ] = 0;\n\t\tte[ 14 ] = 0;\n\t\tte[ 15 ] = 1;\n\n\t\treturn this;\n\n\t}\n\n\tmakeRotationFromQuaternion( q ) {\n\n\t\treturn this.compose( _zero, q, _one );\n\n\t}\n\n\tlookAt( eye, target, up ) {\n\n\t\tconst te = this.elements;\n\n\t\t_z.subVectors( eye, target );\n\n\t\tif ( _z.lengthSq() === 0 ) {\n\n\t\t\t// eye and target are in the same position\n\n\t\t\t_z.z = 1;\n\n\t\t}\n\n\t\t_z.normalize();\n\t\t_x.crossVectors( up, _z );\n\n\t\tif ( _x.lengthSq() === 0 ) {\n\n\t\t\t// up and z are parallel\n\n\t\t\tif ( Math.abs( up.z ) === 1 ) {\n\n\t\t\t\t_z.x += 0.0001;\n\n\t\t\t} else {\n\n\t\t\t\t_z.z += 0.0001;\n\n\t\t\t}\n\n\t\t\t_z.normalize();\n\t\t\t_x.crossVectors( up, _z );\n\n\t\t}\n\n\t\t_x.normalize();\n\t\t_y.crossVectors( _z, _x );\n\n\t\tte[ 0 ] = _x.x; te[ 4 ] = _y.x; te[ 8 ] = _z.x;\n\t\tte[ 1 ] = _x.y; te[ 5 ] = _y.y; te[ 9 ] = _z.y;\n\t\tte[ 2 ] = _x.z; te[ 6 ] = _y.z; te[ 10 ] = _z.z;\n\n\t\treturn this;\n\n\t}\n\n\tmultiply( m, n ) {\n\n\t\tif ( n !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Matrix4: .multiply() now only accepts one argument. Use .multiplyMatrices( a, b ) instead.' );\n\t\t\treturn this.multiplyMatrices( m, n );\n\n\t\t}\n\n\t\treturn this.multiplyMatrices( this, m );\n\n\t}\n\n\tpremultiply( m ) {\n\n\t\treturn this.multiplyMatrices( m, this );\n\n\t}\n\n\tmultiplyMatrices( a, b ) {\n\n\t\tconst ae = a.elements;\n\t\tconst be = b.elements;\n\t\tconst te = this.elements;\n\n\t\tconst a11 = ae[ 0 ], a12 = ae[ 4 ], a13 = ae[ 8 ], a14 = ae[ 12 ];\n\t\tconst a21 = ae[ 1 ], a22 = ae[ 5 ], a23 = ae[ 9 ], a24 = ae[ 13 ];\n\t\tconst a31 = ae[ 2 ], a32 = ae[ 6 ], a33 = ae[ 10 ], a34 = ae[ 14 ];\n\t\tconst a41 = ae[ 3 ], a42 = ae[ 7 ], a43 = ae[ 11 ], a44 = ae[ 15 ];\n\n\t\tconst b11 = be[ 0 ], b12 = be[ 4 ], b13 = be[ 8 ], b14 = be[ 12 ];\n\t\tconst b21 = be[ 1 ], b22 = be[ 5 ], b23 = be[ 9 ], b24 = be[ 13 ];\n\t\tconst b31 = be[ 2 ], b32 = be[ 6 ], b33 = be[ 10 ], b34 = be[ 14 ];\n\t\tconst b41 = be[ 3 ], b42 = be[ 7 ], b43 = be[ 11 ], b44 = be[ 15 ];\n\n\t\tte[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31 + a14 * b41;\n\t\tte[ 4 ] = a11 * b12 + a12 * b22 + a13 * b32 + a14 * b42;\n\t\tte[ 8 ] = a11 * b13 + a12 * b23 + a13 * b33 + a14 * b43;\n\t\tte[ 12 ] = a11 * b14 + a12 * b24 + a13 * b34 + a14 * b44;\n\n\t\tte[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31 + a24 * b41;\n\t\tte[ 5 ] = a21 * b12 + a22 * b22 + a23 * b32 + a24 * b42;\n\t\tte[ 9 ] = a21 * b13 + a22 * b23 + a23 * b33 + a24 * b43;\n\t\tte[ 13 ] = a21 * b14 + a22 * b24 + a23 * b34 + a24 * b44;\n\n\t\tte[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31 + a34 * b41;\n\t\tte[ 6 ] = a31 * b12 + a32 * b22 + a33 * b32 + a34 * b42;\n\t\tte[ 10 ] = a31 * b13 + a32 * b23 + a33 * b33 + a34 * b43;\n\t\tte[ 14 ] = a31 * b14 + a32 * b24 + a33 * b34 + a34 * b44;\n\n\t\tte[ 3 ] = a41 * b11 + a42 * b21 + a43 * b31 + a44 * b41;\n\t\tte[ 7 ] = a41 * b12 + a42 * b22 + a43 * b32 + a44 * b42;\n\t\tte[ 11 ] = a41 * b13 + a42 * b23 + a43 * b33 + a44 * b43;\n\t\tte[ 15 ] = a41 * b14 + a42 * b24 + a43 * b34 + a44 * b44;\n\n\t\treturn this;\n\n\t}\n\n\tmultiplyScalar( s ) {\n\n\t\tconst te = this.elements;\n\n\t\tte[ 0 ] *= s; te[ 4 ] *= s; te[ 8 ] *= s; te[ 12 ] *= s;\n\t\tte[ 1 ] *= s; te[ 5 ] *= s; te[ 9 ] *= s; te[ 13 ] *= s;\n\t\tte[ 2 ] *= s; te[ 6 ] *= s; te[ 10 ] *= s; te[ 14 ] *= s;\n\t\tte[ 3 ] *= s; te[ 7 ] *= s; te[ 11 ] *= s; te[ 15 ] *= s;\n\n\t\treturn this;\n\n\t}\n\n\tdeterminant() {\n\n\t\tconst te = this.elements;\n\n\t\tconst n11 = te[ 0 ], n12 = te[ 4 ], n13 = te[ 8 ], n14 = te[ 12 ];\n\t\tconst n21 = te[ 1 ], n22 = te[ 5 ], n23 = te[ 9 ], n24 = te[ 13 ];\n\t\tconst n31 = te[ 2 ], n32 = te[ 6 ], n33 = te[ 10 ], n34 = te[ 14 ];\n\t\tconst n41 = te[ 3 ], n42 = te[ 7 ], n43 = te[ 11 ], n44 = te[ 15 ];\n\n\t\t//TODO: make this more efficient\n\t\t//( based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm )\n\n\t\treturn (\n\t\t\tn41 * (\n\t\t\t\t+ n14 * n23 * n32\n\t\t\t\t - n13 * n24 * n32\n\t\t\t\t - n14 * n22 * n33\n\t\t\t\t + n12 * n24 * n33\n\t\t\t\t + n13 * n22 * n34\n\t\t\t\t - n12 * n23 * n34\n\t\t\t) +\n\t\t\tn42 * (\n\t\t\t\t+ n11 * n23 * n34\n\t\t\t\t - n11 * n24 * n33\n\t\t\t\t + n14 * n21 * n33\n\t\t\t\t - n13 * n21 * n34\n\t\t\t\t + n13 * n24 * n31\n\t\t\t\t - n14 * n23 * n31\n\t\t\t) +\n\t\t\tn43 * (\n\t\t\t\t+ n11 * n24 * n32\n\t\t\t\t - n11 * n22 * n34\n\t\t\t\t - n14 * n21 * n32\n\t\t\t\t + n12 * n21 * n34\n\t\t\t\t + n14 * n22 * n31\n\t\t\t\t - n12 * n24 * n31\n\t\t\t) +\n\t\t\tn44 * (\n\t\t\t\t- n13 * n22 * n31\n\t\t\t\t - n11 * n23 * n32\n\t\t\t\t + n11 * n22 * n33\n\t\t\t\t + n13 * n21 * n32\n\t\t\t\t - n12 * n21 * n33\n\t\t\t\t + n12 * n23 * n31\n\t\t\t)\n\n\t\t);\n\n\t}\n\n\ttranspose() {\n\n\t\tconst te = this.elements;\n\t\tlet tmp;\n\n\t\ttmp = te[ 1 ]; te[ 1 ] = te[ 4 ]; te[ 4 ] = tmp;\n\t\ttmp = te[ 2 ]; te[ 2 ] = te[ 8 ]; te[ 8 ] = tmp;\n\t\ttmp = te[ 6 ]; te[ 6 ] = te[ 9 ]; te[ 9 ] = tmp;\n\n\t\ttmp = te[ 3 ]; te[ 3 ] = te[ 12 ]; te[ 12 ] = tmp;\n\t\ttmp = te[ 7 ]; te[ 7 ] = te[ 13 ]; te[ 13 ] = tmp;\n\t\ttmp = te[ 11 ]; te[ 11 ] = te[ 14 ]; te[ 14 ] = tmp;\n\n\t\treturn this;\n\n\t}\n\n\tsetPosition( x, y, z ) {\n\n\t\tconst te = this.elements;\n\n\t\tif ( x.isVector3 ) {\n\n\t\t\tte[ 12 ] = x.x;\n\t\t\tte[ 13 ] = x.y;\n\t\t\tte[ 14 ] = x.z;\n\n\t\t} else {\n\n\t\t\tte[ 12 ] = x;\n\t\t\tte[ 13 ] = y;\n\t\t\tte[ 14 ] = z;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tinvert() {\n\n\t\t// based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm\n\t\tconst te = this.elements,\n\n\t\t\tn11 = te[ 0 ], n21 = te[ 1 ], n31 = te[ 2 ], n41 = te[ 3 ],\n\t\t\tn12 = te[ 4 ], n22 = te[ 5 ], n32 = te[ 6 ], n42 = te[ 7 ],\n\t\t\tn13 = te[ 8 ], n23 = te[ 9 ], n33 = te[ 10 ], n43 = te[ 11 ],\n\t\t\tn14 = te[ 12 ], n24 = te[ 13 ], n34 = te[ 14 ], n44 = te[ 15 ],\n\n\t\t\tt11 = n23 * n34 * n42 - n24 * n33 * n42 + n24 * n32 * n43 - n22 * n34 * n43 - n23 * n32 * n44 + n22 * n33 * n44,\n\t\t\tt12 = n14 * n33 * n42 - n13 * n34 * n42 - n14 * n32 * n43 + n12 * n34 * n43 + n13 * n32 * n44 - n12 * n33 * n44,\n\t\t\tt13 = n13 * n24 * n42 - n14 * n23 * n42 + n14 * n22 * n43 - n12 * n24 * n43 - n13 * n22 * n44 + n12 * n23 * n44,\n\t\t\tt14 = n14 * n23 * n32 - n13 * n24 * n32 - n14 * n22 * n33 + n12 * n24 * n33 + n13 * n22 * n34 - n12 * n23 * n34;\n\n\t\tconst det = n11 * t11 + n21 * t12 + n31 * t13 + n41 * t14;\n\n\t\tif ( det === 0 ) return this.set( 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 );\n\n\t\tconst detInv = 1 / det;\n\n\t\tte[ 0 ] = t11 * detInv;\n\t\tte[ 1 ] = ( n24 * n33 * n41 - n23 * n34 * n41 - n24 * n31 * n43 + n21 * n34 * n43 + n23 * n31 * n44 - n21 * n33 * n44 ) * detInv;\n\t\tte[ 2 ] = ( n22 * n34 * n41 - n24 * n32 * n41 + n24 * n31 * n42 - n21 * n34 * n42 - n22 * n31 * n44 + n21 * n32 * n44 ) * detInv;\n\t\tte[ 3 ] = ( n23 * n32 * n41 - n22 * n33 * n41 - n23 * n31 * n42 + n21 * n33 * n42 + n22 * n31 * n43 - n21 * n32 * n43 ) * detInv;\n\n\t\tte[ 4 ] = t12 * detInv;\n\t\tte[ 5 ] = ( n13 * n34 * n41 - n14 * n33 * n41 + n14 * n31 * n43 - n11 * n34 * n43 - n13 * n31 * n44 + n11 * n33 * n44 ) * detInv;\n\t\tte[ 6 ] = ( n14 * n32 * n41 - n12 * n34 * n41 - n14 * n31 * n42 + n11 * n34 * n42 + n12 * n31 * n44 - n11 * n32 * n44 ) * detInv;\n\t\tte[ 7 ] = ( n12 * n33 * n41 - n13 * n32 * n41 + n13 * n31 * n42 - n11 * n33 * n42 - n12 * n31 * n43 + n11 * n32 * n43 ) * detInv;\n\n\t\tte[ 8 ] = t13 * detInv;\n\t\tte[ 9 ] = ( n14 * n23 * n41 - n13 * n24 * n41 - n14 * n21 * n43 + n11 * n24 * n43 + n13 * n21 * n44 - n11 * n23 * n44 ) * detInv;\n\t\tte[ 10 ] = ( n12 * n24 * n41 - n14 * n22 * n41 + n14 * n21 * n42 - n11 * n24 * n42 - n12 * n21 * n44 + n11 * n22 * n44 ) * detInv;\n\t\tte[ 11 ] = ( n13 * n22 * n41 - n12 * n23 * n41 - n13 * n21 * n42 + n11 * n23 * n42 + n12 * n21 * n43 - n11 * n22 * n43 ) * detInv;\n\n\t\tte[ 12 ] = t14 * detInv;\n\t\tte[ 13 ] = ( n13 * n24 * n31 - n14 * n23 * n31 + n14 * n21 * n33 - n11 * n24 * n33 - n13 * n21 * n34 + n11 * n23 * n34 ) * detInv;\n\t\tte[ 14 ] = ( n14 * n22 * n31 - n12 * n24 * n31 - n14 * n21 * n32 + n11 * n24 * n32 + n12 * n21 * n34 - n11 * n22 * n34 ) * detInv;\n\t\tte[ 15 ] = ( n12 * n23 * n31 - n13 * n22 * n31 + n13 * n21 * n32 - n11 * n23 * n32 - n12 * n21 * n33 + n11 * n22 * n33 ) * detInv;\n\n\t\treturn this;\n\n\t}\n\n\tscale( v ) {\n\n\t\tconst te = this.elements;\n\t\tconst x = v.x, y = v.y, z = v.z;\n\n\t\tte[ 0 ] *= x; te[ 4 ] *= y; te[ 8 ] *= z;\n\t\tte[ 1 ] *= x; te[ 5 ] *= y; te[ 9 ] *= z;\n\t\tte[ 2 ] *= x; te[ 6 ] *= y; te[ 10 ] *= z;\n\t\tte[ 3 ] *= x; te[ 7 ] *= y; te[ 11 ] *= z;\n\n\t\treturn this;\n\n\t}\n\n\tgetMaxScaleOnAxis() {\n\n\t\tconst te = this.elements;\n\n\t\tconst scaleXSq = te[ 0 ] * te[ 0 ] + te[ 1 ] * te[ 1 ] + te[ 2 ] * te[ 2 ];\n\t\tconst scaleYSq = te[ 4 ] * te[ 4 ] + te[ 5 ] * te[ 5 ] + te[ 6 ] * te[ 6 ];\n\t\tconst scaleZSq = te[ 8 ] * te[ 8 ] + te[ 9 ] * te[ 9 ] + te[ 10 ] * te[ 10 ];\n\n\t\treturn Math.sqrt( Math.max( scaleXSq, scaleYSq, scaleZSq ) );\n\n\t}\n\n\tmakeTranslation( x, y, z ) {\n\n\t\tthis.set(\n\n\t\t\t1, 0, 0, x,\n\t\t\t0, 1, 0, y,\n\t\t\t0, 0, 1, z,\n\t\t\t0, 0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tmakeRotationX( theta ) {\n\n\t\tconst c = Math.cos( theta ), s = Math.sin( theta );\n\n\t\tthis.set(\n\n\t\t\t1, 0, 0, 0,\n\t\t\t0, c, - s, 0,\n\t\t\t0, s, c, 0,\n\t\t\t0, 0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tmakeRotationY( theta ) {\n\n\t\tconst c = Math.cos( theta ), s = Math.sin( theta );\n\n\t\tthis.set(\n\n\t\t\t c, 0, s, 0,\n\t\t\t 0, 1, 0, 0,\n\t\t\t- s, 0, c, 0,\n\t\t\t 0, 0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tmakeRotationZ( theta ) {\n\n\t\tconst c = Math.cos( theta ), s = Math.sin( theta );\n\n\t\tthis.set(\n\n\t\t\tc, - s, 0, 0,\n\t\t\ts, c, 0, 0,\n\t\t\t0, 0, 1, 0,\n\t\t\t0, 0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tmakeRotationAxis( axis, angle ) {\n\n\t\t// Based on http://www.gamedev.net/reference/articles/article1199.asp\n\n\t\tconst c = Math.cos( angle );\n\t\tconst s = Math.sin( angle );\n\t\tconst t = 1 - c;\n\t\tconst x = axis.x, y = axis.y, z = axis.z;\n\t\tconst tx = t * x, ty = t * y;\n\n\t\tthis.set(\n\n\t\t\ttx * x + c, tx * y - s * z, tx * z + s * y, 0,\n\t\t\ttx * y + s * z, ty * y + c, ty * z - s * x, 0,\n\t\t\ttx * z - s * y, ty * z + s * x, t * z * z + c, 0,\n\t\t\t0, 0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tmakeScale( x, y, z ) {\n\n\t\tthis.set(\n\n\t\t\tx, 0, 0, 0,\n\t\t\t0, y, 0, 0,\n\t\t\t0, 0, z, 0,\n\t\t\t0, 0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tmakeShear( x, y, z ) {\n\n\t\tthis.set(\n\n\t\t\t1, y, z, 0,\n\t\t\tx, 1, z, 0,\n\t\t\tx, y, 1, 0,\n\t\t\t0, 0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tcompose( position, quaternion, scale ) {\n\n\t\tconst te = this.elements;\n\n\t\tconst x = quaternion._x, y = quaternion._y, z = quaternion._z, w = quaternion._w;\n\t\tconst x2 = x + x,\ty2 = y + y, z2 = z + z;\n\t\tconst xx = x * x2, xy = x * y2, xz = x * z2;\n\t\tconst yy = y * y2, yz = y * z2, zz = z * z2;\n\t\tconst wx = w * x2, wy = w * y2, wz = w * z2;\n\n\t\tconst sx = scale.x, sy = scale.y, sz = scale.z;\n\n\t\tte[ 0 ] = ( 1 - ( yy + zz ) ) * sx;\n\t\tte[ 1 ] = ( xy + wz ) * sx;\n\t\tte[ 2 ] = ( xz - wy ) * sx;\n\t\tte[ 3 ] = 0;\n\n\t\tte[ 4 ] = ( xy - wz ) * sy;\n\t\tte[ 5 ] = ( 1 - ( xx + zz ) ) * sy;\n\t\tte[ 6 ] = ( yz + wx ) * sy;\n\t\tte[ 7 ] = 0;\n\n\t\tte[ 8 ] = ( xz + wy ) * sz;\n\t\tte[ 9 ] = ( yz - wx ) * sz;\n\t\tte[ 10 ] = ( 1 - ( xx + yy ) ) * sz;\n\t\tte[ 11 ] = 0;\n\n\t\tte[ 12 ] = position.x;\n\t\tte[ 13 ] = position.y;\n\t\tte[ 14 ] = position.z;\n\t\tte[ 15 ] = 1;\n\n\t\treturn this;\n\n\t}\n\n\tdecompose( position, quaternion, scale ) {\n\n\t\tconst te = this.elements;\n\n\t\tlet sx = _v1$1.set( te[ 0 ], te[ 1 ], te[ 2 ] ).length();\n\t\tconst sy = _v1$1.set( te[ 4 ], te[ 5 ], te[ 6 ] ).length();\n\t\tconst sz = _v1$1.set( te[ 8 ], te[ 9 ], te[ 10 ] ).length();\n\n\t\t// if determine is negative, we need to invert one scale\n\t\tconst det = this.determinant();\n\t\tif ( det < 0 ) sx = - sx;\n\n\t\tposition.x = te[ 12 ];\n\t\tposition.y = te[ 13 ];\n\t\tposition.z = te[ 14 ];\n\n\t\t// scale the rotation part\n\t\t_m1.copy( this );\n\n\t\tconst invSX = 1 / sx;\n\t\tconst invSY = 1 / sy;\n\t\tconst invSZ = 1 / sz;\n\n\t\t_m1.elements[ 0 ] *= invSX;\n\t\t_m1.elements[ 1 ] *= invSX;\n\t\t_m1.elements[ 2 ] *= invSX;\n\n\t\t_m1.elements[ 4 ] *= invSY;\n\t\t_m1.elements[ 5 ] *= invSY;\n\t\t_m1.elements[ 6 ] *= invSY;\n\n\t\t_m1.elements[ 8 ] *= invSZ;\n\t\t_m1.elements[ 9 ] *= invSZ;\n\t\t_m1.elements[ 10 ] *= invSZ;\n\n\t\tquaternion.setFromRotationMatrix( _m1 );\n\n\t\tscale.x = sx;\n\t\tscale.y = sy;\n\t\tscale.z = sz;\n\n\t\treturn this;\n\n\t}\n\n\tmakePerspective( left, right, top, bottom, near, far ) {\n\n\t\tif ( far === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Matrix4: .makePerspective() has been redefined and has a new signature. Please check the docs.' );\n\n\t\t}\n\n\t\tconst te = this.elements;\n\t\tconst x = 2 * near / ( right - left );\n\t\tconst y = 2 * near / ( top - bottom );\n\n\t\tconst a = ( right + left ) / ( right - left );\n\t\tconst b = ( top + bottom ) / ( top - bottom );\n\t\tconst c = - ( far + near ) / ( far - near );\n\t\tconst d = - 2 * far * near / ( far - near );\n\n\t\tte[ 0 ] = x;\tte[ 4 ] = 0;\tte[ 8 ] = a;\tte[ 12 ] = 0;\n\t\tte[ 1 ] = 0;\tte[ 5 ] = y;\tte[ 9 ] = b;\tte[ 13 ] = 0;\n\t\tte[ 2 ] = 0;\tte[ 6 ] = 0;\tte[ 10 ] = c;\tte[ 14 ] = d;\n\t\tte[ 3 ] = 0;\tte[ 7 ] = 0;\tte[ 11 ] = - 1;\tte[ 15 ] = 0;\n\n\t\treturn this;\n\n\t}\n\n\tmakeOrthographic( left, right, top, bottom, near, far ) {\n\n\t\tconst te = this.elements;\n\t\tconst w = 1.0 / ( right - left );\n\t\tconst h = 1.0 / ( top - bottom );\n\t\tconst p = 1.0 / ( far - near );\n\n\t\tconst x = ( right + left ) * w;\n\t\tconst y = ( top + bottom ) * h;\n\t\tconst z = ( far + near ) * p;\n\n\t\tte[ 0 ] = 2 * w;\tte[ 4 ] = 0;\tte[ 8 ] = 0;\tte[ 12 ] = - x;\n\t\tte[ 1 ] = 0;\tte[ 5 ] = 2 * h;\tte[ 9 ] = 0;\tte[ 13 ] = - y;\n\t\tte[ 2 ] = 0;\tte[ 6 ] = 0;\tte[ 10 ] = - 2 * p;\tte[ 14 ] = - z;\n\t\tte[ 3 ] = 0;\tte[ 7 ] = 0;\tte[ 11 ] = 0;\tte[ 15 ] = 1;\n\n\t\treturn this;\n\n\t}\n\n\tequals( matrix ) {\n\n\t\tconst te = this.elements;\n\t\tconst me = matrix.elements;\n\n\t\tfor ( let i = 0; i < 16; i ++ ) {\n\n\t\t\tif ( te[ i ] !== me[ i ] ) return false;\n\n\t\t}\n\n\t\treturn true;\n\n\t}\n\n\tfromArray( array, offset = 0 ) {\n\n\t\tfor ( let i = 0; i < 16; i ++ ) {\n\n\t\t\tthis.elements[ i ] = array[ i + offset ];\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tconst te = this.elements;\n\n\t\tarray[ offset ] = te[ 0 ];\n\t\tarray[ offset + 1 ] = te[ 1 ];\n\t\tarray[ offset + 2 ] = te[ 2 ];\n\t\tarray[ offset + 3 ] = te[ 3 ];\n\n\t\tarray[ offset + 4 ] = te[ 4 ];\n\t\tarray[ offset + 5 ] = te[ 5 ];\n\t\tarray[ offset + 6 ] = te[ 6 ];\n\t\tarray[ offset + 7 ] = te[ 7 ];\n\n\t\tarray[ offset + 8 ] = te[ 8 ];\n\t\tarray[ offset + 9 ] = te[ 9 ];\n\t\tarray[ offset + 10 ] = te[ 10 ];\n\t\tarray[ offset + 11 ] = te[ 11 ];\n\n\t\tarray[ offset + 12 ] = te[ 12 ];\n\t\tarray[ offset + 13 ] = te[ 13 ];\n\t\tarray[ offset + 14 ] = te[ 14 ];\n\t\tarray[ offset + 15 ] = te[ 15 ];\n\n\t\treturn array;\n\n\t}\n\n}\n\nconst _v1$1 = /*@__PURE__*/ new Vector3();\nconst _m1 = /*@__PURE__*/ new Matrix4();\nconst _zero = /*@__PURE__*/ new Vector3( 0, 0, 0 );\nconst _one = /*@__PURE__*/ new Vector3( 1, 1, 1 );\nconst _x = /*@__PURE__*/ new Vector3();\nconst _y = /*@__PURE__*/ new Vector3();\nconst _z = /*@__PURE__*/ new Vector3();\n\nclass Euler {\n\n\tconstructor( x = 0, y = 0, z = 0, order = Euler.DefaultOrder ) {\n\n\t\tObject.defineProperty( this, 'isEuler', { value: true } );\n\n\t\tthis._x = x;\n\t\tthis._y = y;\n\t\tthis._z = z;\n\t\tthis._order = order;\n\n\t}\n\n\tget x() {\n\n\t\treturn this._x;\n\n\t}\n\n\tset x( value ) {\n\n\t\tthis._x = value;\n\t\tthis._onChangeCallback();\n\n\t}\n\n\tget y() {\n\n\t\treturn this._y;\n\n\t}\n\n\tset y( value ) {\n\n\t\tthis._y = value;\n\t\tthis._onChangeCallback();\n\n\t}\n\n\tget z() {\n\n\t\treturn this._z;\n\n\t}\n\n\tset z( value ) {\n\n\t\tthis._z = value;\n\t\tthis._onChangeCallback();\n\n\t}\n\n\tget order() {\n\n\t\treturn this._order;\n\n\t}\n\n\tset order( value ) {\n\n\t\tthis._order = value;\n\t\tthis._onChangeCallback();\n\n\t}\n\n\tset( x, y, z, order ) {\n\n\t\tthis._x = x;\n\t\tthis._y = y;\n\t\tthis._z = z;\n\t\tthis._order = order || this._order;\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor( this._x, this._y, this._z, this._order );\n\n\t}\n\n\tcopy( euler ) {\n\n\t\tthis._x = euler._x;\n\t\tthis._y = euler._y;\n\t\tthis._z = euler._z;\n\t\tthis._order = euler._order;\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tsetFromRotationMatrix( m, order, update ) {\n\n\t\tconst clamp = MathUtils.clamp;\n\n\t\t// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)\n\n\t\tconst te = m.elements;\n\t\tconst m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ];\n\t\tconst m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ];\n\t\tconst m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];\n\n\t\torder = order || this._order;\n\n\t\tswitch ( order ) {\n\n\t\t\tcase 'XYZ':\n\n\t\t\t\tthis._y = Math.asin( clamp( m13, - 1, 1 ) );\n\n\t\t\t\tif ( Math.abs( m13 ) < 0.9999999 ) {\n\n\t\t\t\t\tthis._x = Math.atan2( - m23, m33 );\n\t\t\t\t\tthis._z = Math.atan2( - m12, m11 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthis._x = Math.atan2( m32, m22 );\n\t\t\t\t\tthis._z = 0;\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'YXZ':\n\n\t\t\t\tthis._x = Math.asin( - clamp( m23, - 1, 1 ) );\n\n\t\t\t\tif ( Math.abs( m23 ) < 0.9999999 ) {\n\n\t\t\t\t\tthis._y = Math.atan2( m13, m33 );\n\t\t\t\t\tthis._z = Math.atan2( m21, m22 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthis._y = Math.atan2( - m31, m11 );\n\t\t\t\t\tthis._z = 0;\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'ZXY':\n\n\t\t\t\tthis._x = Math.asin( clamp( m32, - 1, 1 ) );\n\n\t\t\t\tif ( Math.abs( m32 ) < 0.9999999 ) {\n\n\t\t\t\t\tthis._y = Math.atan2( - m31, m33 );\n\t\t\t\t\tthis._z = Math.atan2( - m12, m22 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthis._y = 0;\n\t\t\t\t\tthis._z = Math.atan2( m21, m11 );\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'ZYX':\n\n\t\t\t\tthis._y = Math.asin( - clamp( m31, - 1, 1 ) );\n\n\t\t\t\tif ( Math.abs( m31 ) < 0.9999999 ) {\n\n\t\t\t\t\tthis._x = Math.atan2( m32, m33 );\n\t\t\t\t\tthis._z = Math.atan2( m21, m11 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthis._x = 0;\n\t\t\t\t\tthis._z = Math.atan2( - m12, m22 );\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'YZX':\n\n\t\t\t\tthis._z = Math.asin( clamp( m21, - 1, 1 ) );\n\n\t\t\t\tif ( Math.abs( m21 ) < 0.9999999 ) {\n\n\t\t\t\t\tthis._x = Math.atan2( - m23, m22 );\n\t\t\t\t\tthis._y = Math.atan2( - m31, m11 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthis._x = 0;\n\t\t\t\t\tthis._y = Math.atan2( m13, m33 );\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'XZY':\n\n\t\t\t\tthis._z = Math.asin( - clamp( m12, - 1, 1 ) );\n\n\t\t\t\tif ( Math.abs( m12 ) < 0.9999999 ) {\n\n\t\t\t\t\tthis._x = Math.atan2( m32, m22 );\n\t\t\t\t\tthis._y = Math.atan2( m13, m11 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthis._x = Math.atan2( - m23, m33 );\n\t\t\t\t\tthis._y = 0;\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\n\t\t\t\tconsole.warn( 'THREE.Euler: .setFromRotationMatrix() encountered an unknown order: ' + order );\n\n\t\t}\n\n\t\tthis._order = order;\n\n\t\tif ( update !== false ) this._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tsetFromQuaternion( q, order, update ) {\n\n\t\t_matrix.makeRotationFromQuaternion( q );\n\n\t\treturn this.setFromRotationMatrix( _matrix, order, update );\n\n\t}\n\n\tsetFromVector3( v, order ) {\n\n\t\treturn this.set( v.x, v.y, v.z, order || this._order );\n\n\t}\n\n\treorder( newOrder ) {\n\n\t\t// WARNING: this discards revolution information -bhouston\n\n\t\t_quaternion$1.setFromEuler( this );\n\n\t\treturn this.setFromQuaternion( _quaternion$1, newOrder );\n\n\t}\n\n\tequals( euler ) {\n\n\t\treturn ( euler._x === this._x ) && ( euler._y === this._y ) && ( euler._z === this._z ) && ( euler._order === this._order );\n\n\t}\n\n\tfromArray( array ) {\n\n\t\tthis._x = array[ 0 ];\n\t\tthis._y = array[ 1 ];\n\t\tthis._z = array[ 2 ];\n\t\tif ( array[ 3 ] !== undefined ) this._order = array[ 3 ];\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tarray[ offset ] = this._x;\n\t\tarray[ offset + 1 ] = this._y;\n\t\tarray[ offset + 2 ] = this._z;\n\t\tarray[ offset + 3 ] = this._order;\n\n\t\treturn array;\n\n\t}\n\n\ttoVector3( optionalResult ) {\n\n\t\tif ( optionalResult ) {\n\n\t\t\treturn optionalResult.set( this._x, this._y, this._z );\n\n\t\t} else {\n\n\t\t\treturn new Vector3( this._x, this._y, this._z );\n\n\t\t}\n\n\t}\n\n\t_onChange( callback ) {\n\n\t\tthis._onChangeCallback = callback;\n\n\t\treturn this;\n\n\t}\n\n\t_onChangeCallback() {}\n\n}\n\nEuler.DefaultOrder = 'XYZ';\nEuler.RotationOrders = [ 'XYZ', 'YZX', 'ZXY', 'XZY', 'YXZ', 'ZYX' ];\n\nconst _matrix = /*@__PURE__*/ new Matrix4();\nconst _quaternion$1 = /*@__PURE__*/ new Quaternion();\n\nclass Layers {\n\n\tconstructor() {\n\n\t\tthis.mask = 1 | 0;\n\n\t}\n\n\tset( channel ) {\n\n\t\tthis.mask = 1 << channel | 0;\n\n\t}\n\n\tenable( channel ) {\n\n\t\tthis.mask |= 1 << channel | 0;\n\n\t}\n\n\tenableAll() {\n\n\t\tthis.mask = 0xffffffff | 0;\n\n\t}\n\n\ttoggle( channel ) {\n\n\t\tthis.mask ^= 1 << channel | 0;\n\n\t}\n\n\tdisable( channel ) {\n\n\t\tthis.mask &= ~ ( 1 << channel | 0 );\n\n\t}\n\n\tdisableAll() {\n\n\t\tthis.mask = 0;\n\n\t}\n\n\ttest( layers ) {\n\n\t\treturn ( this.mask & layers.mask ) !== 0;\n\n\t}\n\n}\n\nlet _object3DId = 0;\n\nconst _v1$2 = new Vector3();\nconst _q1 = new Quaternion();\nconst _m1$1 = new Matrix4();\nconst _target = new Vector3();\n\nconst _position = new Vector3();\nconst _scale = new Vector3();\nconst _quaternion$2 = new Quaternion();\n\nconst _xAxis = new Vector3( 1, 0, 0 );\nconst _yAxis = new Vector3( 0, 1, 0 );\nconst _zAxis = new Vector3( 0, 0, 1 );\n\nconst _addedEvent = { type: 'added' };\nconst _removedEvent = { type: 'removed' };\n\nfunction Object3D() {\n\n\tObject.defineProperty( this, 'id', { value: _object3DId ++ } );\n\n\tthis.uuid = MathUtils.generateUUID();\n\n\tthis.name = '';\n\tthis.type = 'Object3D';\n\n\tthis.parent = null;\n\tthis.children = [];\n\n\tthis.up = Object3D.DefaultUp.clone();\n\n\tconst position = new Vector3();\n\tconst rotation = new Euler();\n\tconst quaternion = new Quaternion();\n\tconst scale = new Vector3( 1, 1, 1 );\n\n\tfunction onRotationChange() {\n\n\t\tquaternion.setFromEuler( rotation, false );\n\n\t}\n\n\tfunction onQuaternionChange() {\n\n\t\trotation.setFromQuaternion( quaternion, undefined, false );\n\n\t}\n\n\trotation._onChange( onRotationChange );\n\tquaternion._onChange( onQuaternionChange );\n\n\tObject.defineProperties( this, {\n\t\tposition: {\n\t\t\tconfigurable: true,\n\t\t\tenumerable: true,\n\t\t\tvalue: position\n\t\t},\n\t\trotation: {\n\t\t\tconfigurable: true,\n\t\t\tenumerable: true,\n\t\t\tvalue: rotation\n\t\t},\n\t\tquaternion: {\n\t\t\tconfigurable: true,\n\t\t\tenumerable: true,\n\t\t\tvalue: quaternion\n\t\t},\n\t\tscale: {\n\t\t\tconfigurable: true,\n\t\t\tenumerable: true,\n\t\t\tvalue: scale\n\t\t},\n\t\tmodelViewMatrix: {\n\t\t\tvalue: new Matrix4()\n\t\t},\n\t\tnormalMatrix: {\n\t\t\tvalue: new Matrix3()\n\t\t}\n\t} );\n\n\tthis.matrix = new Matrix4();\n\tthis.matrixWorld = new Matrix4();\n\n\tthis.matrixAutoUpdate = Object3D.DefaultMatrixAutoUpdate;\n\tthis.matrixWorldNeedsUpdate = false;\n\n\tthis.layers = new Layers();\n\tthis.visible = true;\n\n\tthis.castShadow = false;\n\tthis.receiveShadow = false;\n\n\tthis.frustumCulled = true;\n\tthis.renderOrder = 0;\n\n\tthis.animations = [];\n\n\tthis.userData = {};\n\n}\n\nObject3D.DefaultUp = new Vector3( 0, 1, 0 );\nObject3D.DefaultMatrixAutoUpdate = true;\n\nObject3D.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {\n\n\tconstructor: Object3D,\n\n\tisObject3D: true,\n\n\tonBeforeRender: function () {},\n\tonAfterRender: function () {},\n\n\tapplyMatrix4: function ( matrix ) {\n\n\t\tif ( this.matrixAutoUpdate ) this.updateMatrix();\n\n\t\tthis.matrix.premultiply( matrix );\n\n\t\tthis.matrix.decompose( this.position, this.quaternion, this.scale );\n\n\t},\n\n\tapplyQuaternion: function ( q ) {\n\n\t\tthis.quaternion.premultiply( q );\n\n\t\treturn this;\n\n\t},\n\n\tsetRotationFromAxisAngle: function ( axis, angle ) {\n\n\t\t// assumes axis is normalized\n\n\t\tthis.quaternion.setFromAxisAngle( axis, angle );\n\n\t},\n\n\tsetRotationFromEuler: function ( euler ) {\n\n\t\tthis.quaternion.setFromEuler( euler, true );\n\n\t},\n\n\tsetRotationFromMatrix: function ( m ) {\n\n\t\t// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)\n\n\t\tthis.quaternion.setFromRotationMatrix( m );\n\n\t},\n\n\tsetRotationFromQuaternion: function ( q ) {\n\n\t\t// assumes q is normalized\n\n\t\tthis.quaternion.copy( q );\n\n\t},\n\n\trotateOnAxis: function ( axis, angle ) {\n\n\t\t// rotate object on axis in object space\n\t\t// axis is assumed to be normalized\n\n\t\t_q1.setFromAxisAngle( axis, angle );\n\n\t\tthis.quaternion.multiply( _q1 );\n\n\t\treturn this;\n\n\t},\n\n\trotateOnWorldAxis: function ( axis, angle ) {\n\n\t\t// rotate object on axis in world space\n\t\t// axis is assumed to be normalized\n\t\t// method assumes no rotated parent\n\n\t\t_q1.setFromAxisAngle( axis, angle );\n\n\t\tthis.quaternion.premultiply( _q1 );\n\n\t\treturn this;\n\n\t},\n\n\trotateX: function ( angle ) {\n\n\t\treturn this.rotateOnAxis( _xAxis, angle );\n\n\t},\n\n\trotateY: function ( angle ) {\n\n\t\treturn this.rotateOnAxis( _yAxis, angle );\n\n\t},\n\n\trotateZ: function ( angle ) {\n\n\t\treturn this.rotateOnAxis( _zAxis, angle );\n\n\t},\n\n\ttranslateOnAxis: function ( axis, distance ) {\n\n\t\t// translate object by distance along axis in object space\n\t\t// axis is assumed to be normalized\n\n\t\t_v1$2.copy( axis ).applyQuaternion( this.quaternion );\n\n\t\tthis.position.add( _v1$2.multiplyScalar( distance ) );\n\n\t\treturn this;\n\n\t},\n\n\ttranslateX: function ( distance ) {\n\n\t\treturn this.translateOnAxis( _xAxis, distance );\n\n\t},\n\n\ttranslateY: function ( distance ) {\n\n\t\treturn this.translateOnAxis( _yAxis, distance );\n\n\t},\n\n\ttranslateZ: function ( distance ) {\n\n\t\treturn this.translateOnAxis( _zAxis, distance );\n\n\t},\n\n\tlocalToWorld: function ( vector ) {\n\n\t\treturn vector.applyMatrix4( this.matrixWorld );\n\n\t},\n\n\tworldToLocal: function ( vector ) {\n\n\t\treturn vector.applyMatrix4( _m1$1.copy( this.matrixWorld ).invert() );\n\n\t},\n\n\tlookAt: function ( x, y, z ) {\n\n\t\t// This method does not support objects having non-uniformly-scaled parent(s)\n\n\t\tif ( x.isVector3 ) {\n\n\t\t\t_target.copy( x );\n\n\t\t} else {\n\n\t\t\t_target.set( x, y, z );\n\n\t\t}\n\n\t\tconst parent = this.parent;\n\n\t\tthis.updateWorldMatrix( true, false );\n\n\t\t_position.setFromMatrixPosition( this.matrixWorld );\n\n\t\tif ( this.isCamera || this.isLight ) {\n\n\t\t\t_m1$1.lookAt( _position, _target, this.up );\n\n\t\t} else {\n\n\t\t\t_m1$1.lookAt( _target, _position, this.up );\n\n\t\t}\n\n\t\tthis.quaternion.setFromRotationMatrix( _m1$1 );\n\n\t\tif ( parent ) {\n\n\t\t\t_m1$1.extractRotation( parent.matrixWorld );\n\t\t\t_q1.setFromRotationMatrix( _m1$1 );\n\t\t\tthis.quaternion.premultiply( _q1.invert() );\n\n\t\t}\n\n\t},\n\n\tadd: function ( object ) {\n\n\t\tif ( arguments.length > 1 ) {\n\n\t\t\tfor ( let i = 0; i < arguments.length; i ++ ) {\n\n\t\t\t\tthis.add( arguments[ i ] );\n\n\t\t\t}\n\n\t\t\treturn this;\n\n\t\t}\n\n\t\tif ( object === this ) {\n\n\t\t\tconsole.error( 'THREE.Object3D.add: object can\\'t be added as a child of itself.', object );\n\t\t\treturn this;\n\n\t\t}\n\n\t\tif ( object && object.isObject3D ) {\n\n\t\t\tif ( object.parent !== null ) {\n\n\t\t\t\tobject.parent.remove( object );\n\n\t\t\t}\n\n\t\t\tobject.parent = this;\n\t\t\tthis.children.push( object );\n\n\t\t\tobject.dispatchEvent( _addedEvent );\n\n\t\t} else {\n\n\t\t\tconsole.error( 'THREE.Object3D.add: object not an instance of THREE.Object3D.', object );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tremove: function ( object ) {\n\n\t\tif ( arguments.length > 1 ) {\n\n\t\t\tfor ( let i = 0; i < arguments.length; i ++ ) {\n\n\t\t\t\tthis.remove( arguments[ i ] );\n\n\t\t\t}\n\n\t\t\treturn this;\n\n\t\t}\n\n\t\tconst index = this.children.indexOf( object );\n\n\t\tif ( index !== - 1 ) {\n\n\t\t\tobject.parent = null;\n\t\t\tthis.children.splice( index, 1 );\n\n\t\t\tobject.dispatchEvent( _removedEvent );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tclear: function () {\n\n\t\tfor ( let i = 0; i < this.children.length; i ++ ) {\n\n\t\t\tconst object = this.children[ i ];\n\n\t\t\tobject.parent = null;\n\n\t\t\tobject.dispatchEvent( _removedEvent );\n\n\t\t}\n\n\t\tthis.children.length = 0;\n\n\t\treturn this;\n\n\n\t},\n\n\tattach: function ( object ) {\n\n\t\t// adds object as a child of this, while maintaining the object's world transform\n\n\t\tthis.updateWorldMatrix( true, false );\n\n\t\t_m1$1.copy( this.matrixWorld ).invert();\n\n\t\tif ( object.parent !== null ) {\n\n\t\t\tobject.parent.updateWorldMatrix( true, false );\n\n\t\t\t_m1$1.multiply( object.parent.matrixWorld );\n\n\t\t}\n\n\t\tobject.applyMatrix4( _m1$1 );\n\n\t\tobject.updateWorldMatrix( false, false );\n\n\t\tthis.add( object );\n\n\t\treturn this;\n\n\t},\n\n\tgetObjectById: function ( id ) {\n\n\t\treturn this.getObjectByProperty( 'id', id );\n\n\t},\n\n\tgetObjectByName: function ( name ) {\n\n\t\treturn this.getObjectByProperty( 'name', name );\n\n\t},\n\n\tgetObjectByProperty: function ( name, value ) {\n\n\t\tif ( this[ name ] === value ) return this;\n\n\t\tfor ( let i = 0, l = this.children.length; i < l; i ++ ) {\n\n\t\t\tconst child = this.children[ i ];\n\t\t\tconst object = child.getObjectByProperty( name, value );\n\n\t\t\tif ( object !== undefined ) {\n\n\t\t\t\treturn object;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn undefined;\n\n\t},\n\n\tgetWorldPosition: function ( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Object3D: .getWorldPosition() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\tthis.updateWorldMatrix( true, false );\n\n\t\treturn target.setFromMatrixPosition( this.matrixWorld );\n\n\t},\n\n\tgetWorldQuaternion: function ( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Object3D: .getWorldQuaternion() target is now required' );\n\t\t\ttarget = new Quaternion();\n\n\t\t}\n\n\t\tthis.updateWorldMatrix( true, false );\n\n\t\tthis.matrixWorld.decompose( _position, target, _scale );\n\n\t\treturn target;\n\n\t},\n\n\tgetWorldScale: function ( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Object3D: .getWorldScale() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\tthis.updateWorldMatrix( true, false );\n\n\t\tthis.matrixWorld.decompose( _position, _quaternion$2, target );\n\n\t\treturn target;\n\n\t},\n\n\tgetWorldDirection: function ( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Object3D: .getWorldDirection() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\tthis.updateWorldMatrix( true, false );\n\n\t\tconst e = this.matrixWorld.elements;\n\n\t\treturn target.set( e[ 8 ], e[ 9 ], e[ 10 ] ).normalize();\n\n\t},\n\n\traycast: function () {},\n\n\ttraverse: function ( callback ) {\n\n\t\tcallback( this );\n\n\t\tconst children = this.children;\n\n\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\tchildren[ i ].traverse( callback );\n\n\t\t}\n\n\t},\n\n\ttraverseVisible: function ( callback ) {\n\n\t\tif ( this.visible === false ) return;\n\n\t\tcallback( this );\n\n\t\tconst children = this.children;\n\n\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\tchildren[ i ].traverseVisible( callback );\n\n\t\t}\n\n\t},\n\n\ttraverseAncestors: function ( callback ) {\n\n\t\tconst parent = this.parent;\n\n\t\tif ( parent !== null ) {\n\n\t\t\tcallback( parent );\n\n\t\t\tparent.traverseAncestors( callback );\n\n\t\t}\n\n\t},\n\n\tupdateMatrix: function () {\n\n\t\tthis.matrix.compose( this.position, this.quaternion, this.scale );\n\n\t\tthis.matrixWorldNeedsUpdate = true;\n\n\t},\n\n\tupdateMatrixWorld: function ( force ) {\n\n\t\tif ( this.matrixAutoUpdate ) this.updateMatrix();\n\n\t\tif ( this.matrixWorldNeedsUpdate || force ) {\n\n\t\t\tif ( this.parent === null ) {\n\n\t\t\t\tthis.matrixWorld.copy( this.matrix );\n\n\t\t\t} else {\n\n\t\t\t\tthis.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );\n\n\t\t\t}\n\n\t\t\tthis.matrixWorldNeedsUpdate = false;\n\n\t\t\tforce = true;\n\n\t\t}\n\n\t\t// update children\n\n\t\tconst children = this.children;\n\n\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\tchildren[ i ].updateMatrixWorld( force );\n\n\t\t}\n\n\t},\n\n\tupdateWorldMatrix: function ( updateParents, updateChildren ) {\n\n\t\tconst parent = this.parent;\n\n\t\tif ( updateParents === true && parent !== null ) {\n\n\t\t\tparent.updateWorldMatrix( true, false );\n\n\t\t}\n\n\t\tif ( this.matrixAutoUpdate ) this.updateMatrix();\n\n\t\tif ( this.parent === null ) {\n\n\t\t\tthis.matrixWorld.copy( this.matrix );\n\n\t\t} else {\n\n\t\t\tthis.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );\n\n\t\t}\n\n\t\t// update children\n\n\t\tif ( updateChildren === true ) {\n\n\t\t\tconst children = this.children;\n\n\t\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\t\tchildren[ i ].updateWorldMatrix( false, true );\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\ttoJSON: function ( meta ) {\n\n\t\t// meta is a string when called from JSON.stringify\n\t\tconst isRootObject = ( meta === undefined || typeof meta === 'string' );\n\n\t\tconst output = {};\n\n\t\t// meta is a hash used to collect geometries, materials.\n\t\t// not providing it implies that this is the root object\n\t\t// being serialized.\n\t\tif ( isRootObject ) {\n\n\t\t\t// initialize meta obj\n\t\t\tmeta = {\n\t\t\t\tgeometries: {},\n\t\t\t\tmaterials: {},\n\t\t\t\ttextures: {},\n\t\t\t\timages: {},\n\t\t\t\tshapes: {},\n\t\t\t\tskeletons: {},\n\t\t\t\tanimations: {}\n\t\t\t};\n\n\t\t\toutput.metadata = {\n\t\t\t\tversion: 4.5,\n\t\t\t\ttype: 'Object',\n\t\t\t\tgenerator: 'Object3D.toJSON'\n\t\t\t};\n\n\t\t}\n\n\t\t// standard Object3D serialization\n\n\t\tconst object = {};\n\n\t\tobject.uuid = this.uuid;\n\t\tobject.type = this.type;\n\n\t\tif ( this.name !== '' ) object.name = this.name;\n\t\tif ( this.castShadow === true ) object.castShadow = true;\n\t\tif ( this.receiveShadow === true ) object.receiveShadow = true;\n\t\tif ( this.visible === false ) object.visible = false;\n\t\tif ( this.frustumCulled === false ) object.frustumCulled = false;\n\t\tif ( this.renderOrder !== 0 ) object.renderOrder = this.renderOrder;\n\t\tif ( JSON.stringify( this.userData ) !== '{}' ) object.userData = this.userData;\n\n\t\tobject.layers = this.layers.mask;\n\t\tobject.matrix = this.matrix.toArray();\n\n\t\tif ( this.matrixAutoUpdate === false ) object.matrixAutoUpdate = false;\n\n\t\t// object specific properties\n\n\t\tif ( this.isInstancedMesh ) {\n\n\t\t\tobject.type = 'InstancedMesh';\n\t\t\tobject.count = this.count;\n\t\t\tobject.instanceMatrix = this.instanceMatrix.toJSON();\n\n\t\t}\n\n\t\t//\n\n\t\tfunction serialize( library, element ) {\n\n\t\t\tif ( library[ element.uuid ] === undefined ) {\n\n\t\t\t\tlibrary[ element.uuid ] = element.toJSON( meta );\n\n\t\t\t}\n\n\t\t\treturn element.uuid;\n\n\t\t}\n\n\t\tif ( this.isMesh || this.isLine || this.isPoints ) {\n\n\t\t\tobject.geometry = serialize( meta.geometries, this.geometry );\n\n\t\t\tconst parameters = this.geometry.parameters;\n\n\t\t\tif ( parameters !== undefined && parameters.shapes !== undefined ) {\n\n\t\t\t\tconst shapes = parameters.shapes;\n\n\t\t\t\tif ( Array.isArray( shapes ) ) {\n\n\t\t\t\t\tfor ( let i = 0, l = shapes.length; i < l; i ++ ) {\n\n\t\t\t\t\t\tconst shape = shapes[ i ];\n\n\t\t\t\t\t\tserialize( meta.shapes, shape );\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\tserialize( meta.shapes, shapes );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( this.isSkinnedMesh ) {\n\n\t\t\tobject.bindMode = this.bindMode;\n\t\t\tobject.bindMatrix = this.bindMatrix.toArray();\n\n\t\t\tif ( this.skeleton !== undefined ) {\n\n\t\t\t\tserialize( meta.skeletons, this.skeleton );\n\n\t\t\t\tobject.skeleton = this.skeleton.uuid;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( this.material !== undefined ) {\n\n\t\t\tif ( Array.isArray( this.material ) ) {\n\n\t\t\t\tconst uuids = [];\n\n\t\t\t\tfor ( let i = 0, l = this.material.length; i < l; i ++ ) {\n\n\t\t\t\t\tuuids.push( serialize( meta.materials, this.material[ i ] ) );\n\n\t\t\t\t}\n\n\t\t\t\tobject.material = uuids;\n\n\t\t\t} else {\n\n\t\t\t\tobject.material = serialize( meta.materials, this.material );\n\n\t\t\t}\n\n\t\t}\n\n\t\t//\n\n\t\tif ( this.children.length > 0 ) {\n\n\t\t\tobject.children = [];\n\n\t\t\tfor ( let i = 0; i < this.children.length; i ++ ) {\n\n\t\t\t\tobject.children.push( this.children[ i ].toJSON( meta ).object );\n\n\t\t\t}\n\n\t\t}\n\n\t\t//\n\n\t\tif ( this.animations.length > 0 ) {\n\n\t\t\tobject.animations = [];\n\n\t\t\tfor ( let i = 0; i < this.animations.length; i ++ ) {\n\n\t\t\t\tconst animation = this.animations[ i ];\n\n\t\t\t\tobject.animations.push( serialize( meta.animations, animation ) );\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( isRootObject ) {\n\n\t\t\tconst geometries = extractFromCache( meta.geometries );\n\t\t\tconst materials = extractFromCache( meta.materials );\n\t\t\tconst textures = extractFromCache( meta.textures );\n\t\t\tconst images = extractFromCache( meta.images );\n\t\t\tconst shapes = extractFromCache( meta.shapes );\n\t\t\tconst skeletons = extractFromCache( meta.skeletons );\n\t\t\tconst animations = extractFromCache( meta.animations );\n\n\t\t\tif ( geometries.length > 0 ) output.geometries = geometries;\n\t\t\tif ( materials.length > 0 ) output.materials = materials;\n\t\t\tif ( textures.length > 0 ) output.textures = textures;\n\t\t\tif ( images.length > 0 ) output.images = images;\n\t\t\tif ( shapes.length > 0 ) output.shapes = shapes;\n\t\t\tif ( skeletons.length > 0 ) output.skeletons = skeletons;\n\t\t\tif ( animations.length > 0 ) output.animations = animations;\n\n\t\t}\n\n\t\toutput.object = object;\n\n\t\treturn output;\n\n\t\t// extract data from the cache hash\n\t\t// remove metadata on each item\n\t\t// and return as array\n\t\tfunction extractFromCache( cache ) {\n\n\t\t\tconst values = [];\n\t\t\tfor ( const key in cache ) {\n\n\t\t\t\tconst data = cache[ key ];\n\t\t\t\tdelete data.metadata;\n\t\t\t\tvalues.push( data );\n\n\t\t\t}\n\n\t\t\treturn values;\n\n\t\t}\n\n\t},\n\n\tclone: function ( recursive ) {\n\n\t\treturn new this.constructor().copy( this, recursive );\n\n\t},\n\n\tcopy: function ( source, recursive = true ) {\n\n\t\tthis.name = source.name;\n\n\t\tthis.up.copy( source.up );\n\n\t\tthis.position.copy( source.position );\n\t\tthis.rotation.order = source.rotation.order;\n\t\tthis.quaternion.copy( source.quaternion );\n\t\tthis.scale.copy( source.scale );\n\n\t\tthis.matrix.copy( source.matrix );\n\t\tthis.matrixWorld.copy( source.matrixWorld );\n\n\t\tthis.matrixAutoUpdate = source.matrixAutoUpdate;\n\t\tthis.matrixWorldNeedsUpdate = source.matrixWorldNeedsUpdate;\n\n\t\tthis.layers.mask = source.layers.mask;\n\t\tthis.visible = source.visible;\n\n\t\tthis.castShadow = source.castShadow;\n\t\tthis.receiveShadow = source.receiveShadow;\n\n\t\tthis.frustumCulled = source.frustumCulled;\n\t\tthis.renderOrder = source.renderOrder;\n\n\t\tthis.userData = JSON.parse( JSON.stringify( source.userData ) );\n\n\t\tif ( recursive === true ) {\n\n\t\t\tfor ( let i = 0; i < source.children.length; i ++ ) {\n\n\t\t\t\tconst child = source.children[ i ];\n\t\t\t\tthis.add( child.clone() );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n} );\n\nconst _vector1 = /*@__PURE__*/ new Vector3();\nconst _vector2 = /*@__PURE__*/ new Vector3();\nconst _normalMatrix = /*@__PURE__*/ new Matrix3();\n\nclass Plane {\n\n\tconstructor( normal, constant ) {\n\n\t\tObject.defineProperty( this, 'isPlane', { value: true } );\n\n\t\t// normal is assumed to be normalized\n\n\t\tthis.normal = ( normal !== undefined ) ? normal : new Vector3( 1, 0, 0 );\n\t\tthis.constant = ( constant !== undefined ) ? constant : 0;\n\n\t}\n\n\tset( normal, constant ) {\n\n\t\tthis.normal.copy( normal );\n\t\tthis.constant = constant;\n\n\t\treturn this;\n\n\t}\n\n\tsetComponents( x, y, z, w ) {\n\n\t\tthis.normal.set( x, y, z );\n\t\tthis.constant = w;\n\n\t\treturn this;\n\n\t}\n\n\tsetFromNormalAndCoplanarPoint( normal, point ) {\n\n\t\tthis.normal.copy( normal );\n\t\tthis.constant = - point.dot( this.normal );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromCoplanarPoints( a, b, c ) {\n\n\t\tconst normal = _vector1.subVectors( c, b ).cross( _vector2.subVectors( a, b ) ).normalize();\n\n\t\t// Q: should an error be thrown if normal is zero (e.g. degenerate plane)?\n\n\t\tthis.setFromNormalAndCoplanarPoint( normal, a );\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( plane ) {\n\n\t\tthis.normal.copy( plane.normal );\n\t\tthis.constant = plane.constant;\n\n\t\treturn this;\n\n\t}\n\n\tnormalize() {\n\n\t\t// Note: will lead to a divide by zero if the plane is invalid.\n\n\t\tconst inverseNormalLength = 1.0 / this.normal.length();\n\t\tthis.normal.multiplyScalar( inverseNormalLength );\n\t\tthis.constant *= inverseNormalLength;\n\n\t\treturn this;\n\n\t}\n\n\tnegate() {\n\n\t\tthis.constant *= - 1;\n\t\tthis.normal.negate();\n\n\t\treturn this;\n\n\t}\n\n\tdistanceToPoint( point ) {\n\n\t\treturn this.normal.dot( point ) + this.constant;\n\n\t}\n\n\tdistanceToSphere( sphere ) {\n\n\t\treturn this.distanceToPoint( sphere.center ) - sphere.radius;\n\n\t}\n\n\tprojectPoint( point, target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Plane: .projectPoint() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\treturn target.copy( this.normal ).multiplyScalar( - this.distanceToPoint( point ) ).add( point );\n\n\t}\n\n\tintersectLine( line, target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Plane: .intersectLine() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\tconst direction = line.delta( _vector1 );\n\n\t\tconst denominator = this.normal.dot( direction );\n\n\t\tif ( denominator === 0 ) {\n\n\t\t\t// line is coplanar, return origin\n\t\t\tif ( this.distanceToPoint( line.start ) === 0 ) {\n\n\t\t\t\treturn target.copy( line.start );\n\n\t\t\t}\n\n\t\t\t// Unsure if this is the correct method to handle this case.\n\t\t\treturn undefined;\n\n\t\t}\n\n\t\tconst t = - ( line.start.dot( this.normal ) + this.constant ) / denominator;\n\n\t\tif ( t < 0 || t > 1 ) {\n\n\t\t\treturn undefined;\n\n\t\t}\n\n\t\treturn target.copy( direction ).multiplyScalar( t ).add( line.start );\n\n\t}\n\n\tintersectsLine( line ) {\n\n\t\t// Note: this tests if a line intersects the plane, not whether it (or its end-points) are coplanar with it.\n\n\t\tconst startSign = this.distanceToPoint( line.start );\n\t\tconst endSign = this.distanceToPoint( line.end );\n\n\t\treturn ( startSign < 0 && endSign > 0 ) || ( endSign < 0 && startSign > 0 );\n\n\t}\n\n\tintersectsBox( box ) {\n\n\t\treturn box.intersectsPlane( this );\n\n\t}\n\n\tintersectsSphere( sphere ) {\n\n\t\treturn sphere.intersectsPlane( this );\n\n\t}\n\n\tcoplanarPoint( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Plane: .coplanarPoint() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\treturn target.copy( this.normal ).multiplyScalar( - this.constant );\n\n\t}\n\n\tapplyMatrix4( matrix, optionalNormalMatrix ) {\n\n\t\tconst normalMatrix = optionalNormalMatrix || _normalMatrix.getNormalMatrix( matrix );\n\n\t\tconst referencePoint = this.coplanarPoint( _vector1 ).applyMatrix4( matrix );\n\n\t\tconst normal = this.normal.applyMatrix3( normalMatrix ).normalize();\n\n\t\tthis.constant = - referencePoint.dot( normal );\n\n\t\treturn this;\n\n\t}\n\n\ttranslate( offset ) {\n\n\t\tthis.constant -= offset.dot( this.normal );\n\n\t\treturn this;\n\n\t}\n\n\tequals( plane ) {\n\n\t\treturn plane.normal.equals( this.normal ) && ( plane.constant === this.constant );\n\n\t}\n\n}\n\nconst _v0$1 = /*@__PURE__*/ new Vector3();\nconst _v1$3 = /*@__PURE__*/ new Vector3();\nconst _v2$1 = /*@__PURE__*/ new Vector3();\nconst _v3 = /*@__PURE__*/ new Vector3();\n\nconst _vab = /*@__PURE__*/ new Vector3();\nconst _vac = /*@__PURE__*/ new Vector3();\nconst _vbc = /*@__PURE__*/ new Vector3();\nconst _vap = /*@__PURE__*/ new Vector3();\nconst _vbp = /*@__PURE__*/ new Vector3();\nconst _vcp = /*@__PURE__*/ new Vector3();\n\nclass Triangle {\n\n\tconstructor( a, b, c ) {\n\n\t\tthis.a = ( a !== undefined ) ? a : new Vector3();\n\t\tthis.b = ( b !== undefined ) ? b : new Vector3();\n\t\tthis.c = ( c !== undefined ) ? c : new Vector3();\n\n\t}\n\n\tstatic getNormal( a, b, c, target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Triangle: .getNormal() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\ttarget.subVectors( c, b );\n\t\t_v0$1.subVectors( a, b );\n\t\ttarget.cross( _v0$1 );\n\n\t\tconst targetLengthSq = target.lengthSq();\n\t\tif ( targetLengthSq > 0 ) {\n\n\t\t\treturn target.multiplyScalar( 1 / Math.sqrt( targetLengthSq ) );\n\n\t\t}\n\n\t\treturn target.set( 0, 0, 0 );\n\n\t}\n\n\t// static/instance method to calculate barycentric coordinates\n\t// based on: http://www.blackpawn.com/texts/pointinpoly/default.html\n\tstatic getBarycoord( point, a, b, c, target ) {\n\n\t\t_v0$1.subVectors( c, a );\n\t\t_v1$3.subVectors( b, a );\n\t\t_v2$1.subVectors( point, a );\n\n\t\tconst dot00 = _v0$1.dot( _v0$1 );\n\t\tconst dot01 = _v0$1.dot( _v1$3 );\n\t\tconst dot02 = _v0$1.dot( _v2$1 );\n\t\tconst dot11 = _v1$3.dot( _v1$3 );\n\t\tconst dot12 = _v1$3.dot( _v2$1 );\n\n\t\tconst denom = ( dot00 * dot11 - dot01 * dot01 );\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Triangle: .getBarycoord() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\t// collinear or singular triangle\n\t\tif ( denom === 0 ) {\n\n\t\t\t// arbitrary location outside of triangle?\n\t\t\t// not sure if this is the best idea, maybe should be returning undefined\n\t\t\treturn target.set( - 2, - 1, - 1 );\n\n\t\t}\n\n\t\tconst invDenom = 1 / denom;\n\t\tconst u = ( dot11 * dot02 - dot01 * dot12 ) * invDenom;\n\t\tconst v = ( dot00 * dot12 - dot01 * dot02 ) * invDenom;\n\n\t\t// barycentric coordinates must always sum to 1\n\t\treturn target.set( 1 - u - v, v, u );\n\n\t}\n\n\tstatic containsPoint( point, a, b, c ) {\n\n\t\tthis.getBarycoord( point, a, b, c, _v3 );\n\n\t\treturn ( _v3.x >= 0 ) && ( _v3.y >= 0 ) && ( ( _v3.x + _v3.y ) <= 1 );\n\n\t}\n\n\tstatic getUV( point, p1, p2, p3, uv1, uv2, uv3, target ) {\n\n\t\tthis.getBarycoord( point, p1, p2, p3, _v3 );\n\n\t\ttarget.set( 0, 0 );\n\t\ttarget.addScaledVector( uv1, _v3.x );\n\t\ttarget.addScaledVector( uv2, _v3.y );\n\t\ttarget.addScaledVector( uv3, _v3.z );\n\n\t\treturn target;\n\n\t}\n\n\tstatic isFrontFacing( a, b, c, direction ) {\n\n\t\t_v0$1.subVectors( c, b );\n\t\t_v1$3.subVectors( a, b );\n\n\t\t// strictly front facing\n\t\treturn ( _v0$1.cross( _v1$3 ).dot( direction ) < 0 ) ? true : false;\n\n\t}\n\n\tset( a, b, c ) {\n\n\t\tthis.a.copy( a );\n\t\tthis.b.copy( b );\n\t\tthis.c.copy( c );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromPointsAndIndices( points, i0, i1, i2 ) {\n\n\t\tthis.a.copy( points[ i0 ] );\n\t\tthis.b.copy( points[ i1 ] );\n\t\tthis.c.copy( points[ i2 ] );\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( triangle ) {\n\n\t\tthis.a.copy( triangle.a );\n\t\tthis.b.copy( triangle.b );\n\t\tthis.c.copy( triangle.c );\n\n\t\treturn this;\n\n\t}\n\n\tgetArea() {\n\n\t\t_v0$1.subVectors( this.c, this.b );\n\t\t_v1$3.subVectors( this.a, this.b );\n\n\t\treturn _v0$1.cross( _v1$3 ).length() * 0.5;\n\n\t}\n\n\tgetMidpoint( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Triangle: .getMidpoint() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\treturn target.addVectors( this.a, this.b ).add( this.c ).multiplyScalar( 1 / 3 );\n\n\t}\n\n\tgetNormal( target ) {\n\n\t\treturn Triangle.getNormal( this.a, this.b, this.c, target );\n\n\t}\n\n\tgetPlane( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Triangle: .getPlane() target is now required' );\n\t\t\ttarget = new Plane();\n\n\t\t}\n\n\t\treturn target.setFromCoplanarPoints( this.a, this.b, this.c );\n\n\t}\n\n\tgetBarycoord( point, target ) {\n\n\t\treturn Triangle.getBarycoord( point, this.a, this.b, this.c, target );\n\n\t}\n\n\tgetUV( point, uv1, uv2, uv3, target ) {\n\n\t\treturn Triangle.getUV( point, this.a, this.b, this.c, uv1, uv2, uv3, target );\n\n\t}\n\n\tcontainsPoint( point ) {\n\n\t\treturn Triangle.containsPoint( point, this.a, this.b, this.c );\n\n\t}\n\n\tisFrontFacing( direction ) {\n\n\t\treturn Triangle.isFrontFacing( this.a, this.b, this.c, direction );\n\n\t}\n\n\tintersectsBox( box ) {\n\n\t\treturn box.intersectsTriangle( this );\n\n\t}\n\n\tclosestPointToPoint( p, target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Triangle: .closestPointToPoint() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\tconst a = this.a, b = this.b, c = this.c;\n\t\tlet v, w;\n\n\t\t// algorithm thanks to Real-Time Collision Detection by Christer Ericson,\n\t\t// published by Morgan Kaufmann Publishers, (c) 2005 Elsevier Inc.,\n\t\t// under the accompanying license; see chapter 5.1.5 for detailed explanation.\n\t\t// basically, we're distinguishing which of the voronoi regions of the triangle\n\t\t// the point lies in with the minimum amount of redundant computation.\n\n\t\t_vab.subVectors( b, a );\n\t\t_vac.subVectors( c, a );\n\t\t_vap.subVectors( p, a );\n\t\tconst d1 = _vab.dot( _vap );\n\t\tconst d2 = _vac.dot( _vap );\n\t\tif ( d1 <= 0 && d2 <= 0 ) {\n\n\t\t\t// vertex region of A; barycentric coords (1, 0, 0)\n\t\t\treturn target.copy( a );\n\n\t\t}\n\n\t\t_vbp.subVectors( p, b );\n\t\tconst d3 = _vab.dot( _vbp );\n\t\tconst d4 = _vac.dot( _vbp );\n\t\tif ( d3 >= 0 && d4 <= d3 ) {\n\n\t\t\t// vertex region of B; barycentric coords (0, 1, 0)\n\t\t\treturn target.copy( b );\n\n\t\t}\n\n\t\tconst vc = d1 * d4 - d3 * d2;\n\t\tif ( vc <= 0 && d1 >= 0 && d3 <= 0 ) {\n\n\t\t\tv = d1 / ( d1 - d3 );\n\t\t\t// edge region of AB; barycentric coords (1-v, v, 0)\n\t\t\treturn target.copy( a ).addScaledVector( _vab, v );\n\n\t\t}\n\n\t\t_vcp.subVectors( p, c );\n\t\tconst d5 = _vab.dot( _vcp );\n\t\tconst d6 = _vac.dot( _vcp );\n\t\tif ( d6 >= 0 && d5 <= d6 ) {\n\n\t\t\t// vertex region of C; barycentric coords (0, 0, 1)\n\t\t\treturn target.copy( c );\n\n\t\t}\n\n\t\tconst vb = d5 * d2 - d1 * d6;\n\t\tif ( vb <= 0 && d2 >= 0 && d6 <= 0 ) {\n\n\t\t\tw = d2 / ( d2 - d6 );\n\t\t\t// edge region of AC; barycentric coords (1-w, 0, w)\n\t\t\treturn target.copy( a ).addScaledVector( _vac, w );\n\n\t\t}\n\n\t\tconst va = d3 * d6 - d5 * d4;\n\t\tif ( va <= 0 && ( d4 - d3 ) >= 0 && ( d5 - d6 ) >= 0 ) {\n\n\t\t\t_vbc.subVectors( c, b );\n\t\t\tw = ( d4 - d3 ) / ( ( d4 - d3 ) + ( d5 - d6 ) );\n\t\t\t// edge region of BC; barycentric coords (0, 1-w, w)\n\t\t\treturn target.copy( b ).addScaledVector( _vbc, w ); // edge region of BC\n\n\t\t}\n\n\t\t// face region\n\t\tconst denom = 1 / ( va + vb + vc );\n\t\t// u = va * denom\n\t\tv = vb * denom;\n\t\tw = vc * denom;\n\n\t\treturn target.copy( a ).addScaledVector( _vab, v ).addScaledVector( _vac, w );\n\n\t}\n\n\tequals( triangle ) {\n\n\t\treturn triangle.a.equals( this.a ) && triangle.b.equals( this.b ) && triangle.c.equals( this.c );\n\n\t}\n\n}\n\nconst _colorKeywords = { 'aliceblue': 0xF0F8FF, 'antiquewhite': 0xFAEBD7, 'aqua': 0x00FFFF, 'aquamarine': 0x7FFFD4, 'azure': 0xF0FFFF,\n\t'beige': 0xF5F5DC, 'bisque': 0xFFE4C4, 'black': 0x000000, 'blanchedalmond': 0xFFEBCD, 'blue': 0x0000FF, 'blueviolet': 0x8A2BE2,\n\t'brown': 0xA52A2A, 'burlywood': 0xDEB887, 'cadetblue': 0x5F9EA0, 'chartreuse': 0x7FFF00, 'chocolate': 0xD2691E, 'coral': 0xFF7F50,\n\t'cornflowerblue': 0x6495ED, 'cornsilk': 0xFFF8DC, 'crimson': 0xDC143C, 'cyan': 0x00FFFF, 'darkblue': 0x00008B, 'darkcyan': 0x008B8B,\n\t'darkgoldenrod': 0xB8860B, 'darkgray': 0xA9A9A9, 'darkgreen': 0x006400, 'darkgrey': 0xA9A9A9, 'darkkhaki': 0xBDB76B, 'darkmagenta': 0x8B008B,\n\t'darkolivegreen': 0x556B2F, 'darkorange': 0xFF8C00, 'darkorchid': 0x9932CC, 'darkred': 0x8B0000, 'darksalmon': 0xE9967A, 'darkseagreen': 0x8FBC8F,\n\t'darkslateblue': 0x483D8B, 'darkslategray': 0x2F4F4F, 'darkslategrey': 0x2F4F4F, 'darkturquoise': 0x00CED1, 'darkviolet': 0x9400D3,\n\t'deeppink': 0xFF1493, 'deepskyblue': 0x00BFFF, 'dimgray': 0x696969, 'dimgrey': 0x696969, 'dodgerblue': 0x1E90FF, 'firebrick': 0xB22222,\n\t'floralwhite': 0xFFFAF0, 'forestgreen': 0x228B22, 'fuchsia': 0xFF00FF, 'gainsboro': 0xDCDCDC, 'ghostwhite': 0xF8F8FF, 'gold': 0xFFD700,\n\t'goldenrod': 0xDAA520, 'gray': 0x808080, 'green': 0x008000, 'greenyellow': 0xADFF2F, 'grey': 0x808080, 'honeydew': 0xF0FFF0, 'hotpink': 0xFF69B4,\n\t'indianred': 0xCD5C5C, 'indigo': 0x4B0082, 'ivory': 0xFFFFF0, 'khaki': 0xF0E68C, 'lavender': 0xE6E6FA, 'lavenderblush': 0xFFF0F5, 'lawngreen': 0x7CFC00,\n\t'lemonchiffon': 0xFFFACD, 'lightblue': 0xADD8E6, 'lightcoral': 0xF08080, 'lightcyan': 0xE0FFFF, 'lightgoldenrodyellow': 0xFAFAD2, 'lightgray': 0xD3D3D3,\n\t'lightgreen': 0x90EE90, 'lightgrey': 0xD3D3D3, 'lightpink': 0xFFB6C1, 'lightsalmon': 0xFFA07A, 'lightseagreen': 0x20B2AA, 'lightskyblue': 0x87CEFA,\n\t'lightslategray': 0x778899, 'lightslategrey': 0x778899, 'lightsteelblue': 0xB0C4DE, 'lightyellow': 0xFFFFE0, 'lime': 0x00FF00, 'limegreen': 0x32CD32,\n\t'linen': 0xFAF0E6, 'magenta': 0xFF00FF, 'maroon': 0x800000, 'mediumaquamarine': 0x66CDAA, 'mediumblue': 0x0000CD, 'mediumorchid': 0xBA55D3,\n\t'mediumpurple': 0x9370DB, 'mediumseagreen': 0x3CB371, 'mediumslateblue': 0x7B68EE, 'mediumspringgreen': 0x00FA9A, 'mediumturquoise': 0x48D1CC,\n\t'mediumvioletred': 0xC71585, 'midnightblue': 0x191970, 'mintcream': 0xF5FFFA, 'mistyrose': 0xFFE4E1, 'moccasin': 0xFFE4B5, 'navajowhite': 0xFFDEAD,\n\t'navy': 0x000080, 'oldlace': 0xFDF5E6, 'olive': 0x808000, 'olivedrab': 0x6B8E23, 'orange': 0xFFA500, 'orangered': 0xFF4500, 'orchid': 0xDA70D6,\n\t'palegoldenrod': 0xEEE8AA, 'palegreen': 0x98FB98, 'paleturquoise': 0xAFEEEE, 'palevioletred': 0xDB7093, 'papayawhip': 0xFFEFD5, 'peachpuff': 0xFFDAB9,\n\t'peru': 0xCD853F, 'pink': 0xFFC0CB, 'plum': 0xDDA0DD, 'powderblue': 0xB0E0E6, 'purple': 0x800080, 'rebeccapurple': 0x663399, 'red': 0xFF0000, 'rosybrown': 0xBC8F8F,\n\t'royalblue': 0x4169E1, 'saddlebrown': 0x8B4513, 'salmon': 0xFA8072, 'sandybrown': 0xF4A460, 'seagreen': 0x2E8B57, 'seashell': 0xFFF5EE,\n\t'sienna': 0xA0522D, 'silver': 0xC0C0C0, 'skyblue': 0x87CEEB, 'slateblue': 0x6A5ACD, 'slategray': 0x708090, 'slategrey': 0x708090, 'snow': 0xFFFAFA,\n\t'springgreen': 0x00FF7F, 'steelblue': 0x4682B4, 'tan': 0xD2B48C, 'teal': 0x008080, 'thistle': 0xD8BFD8, 'tomato': 0xFF6347, 'turquoise': 0x40E0D0,\n\t'violet': 0xEE82EE, 'wheat': 0xF5DEB3, 'white': 0xFFFFFF, 'whitesmoke': 0xF5F5F5, 'yellow': 0xFFFF00, 'yellowgreen': 0x9ACD32 };\n\nconst _hslA = { h: 0, s: 0, l: 0 };\nconst _hslB = { h: 0, s: 0, l: 0 };\n\nfunction hue2rgb( p, q, t ) {\n\n\tif ( t < 0 ) t += 1;\n\tif ( t > 1 ) t -= 1;\n\tif ( t < 1 / 6 ) return p + ( q - p ) * 6 * t;\n\tif ( t < 1 / 2 ) return q;\n\tif ( t < 2 / 3 ) return p + ( q - p ) * 6 * ( 2 / 3 - t );\n\treturn p;\n\n}\n\nfunction SRGBToLinear( c ) {\n\n\treturn ( c < 0.04045 ) ? c * 0.0773993808 : Math.pow( c * 0.9478672986 + 0.0521327014, 2.4 );\n\n}\n\nfunction LinearToSRGB( c ) {\n\n\treturn ( c < 0.0031308 ) ? c * 12.92 : 1.055 * ( Math.pow( c, 0.41666 ) ) - 0.055;\n\n}\n\nclass Color {\n\n\tconstructor( r, g, b ) {\n\n\t\tObject.defineProperty( this, 'isColor', { value: true } );\n\n\t\tif ( g === undefined && b === undefined ) {\n\n\t\t\t// r is THREE.Color, hex or string\n\t\t\treturn this.set( r );\n\n\t\t}\n\n\t\treturn this.setRGB( r, g, b );\n\n\t}\n\n\tset( value ) {\n\n\t\tif ( value && value.isColor ) {\n\n\t\t\tthis.copy( value );\n\n\t\t} else if ( typeof value === 'number' ) {\n\n\t\t\tthis.setHex( value );\n\n\t\t} else if ( typeof value === 'string' ) {\n\n\t\t\tthis.setStyle( value );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetScalar( scalar ) {\n\n\t\tthis.r = scalar;\n\t\tthis.g = scalar;\n\t\tthis.b = scalar;\n\n\t\treturn this;\n\n\t}\n\n\tsetHex( hex ) {\n\n\t\thex = Math.floor( hex );\n\n\t\tthis.r = ( hex >> 16 & 255 ) / 255;\n\t\tthis.g = ( hex >> 8 & 255 ) / 255;\n\t\tthis.b = ( hex & 255 ) / 255;\n\n\t\treturn this;\n\n\t}\n\n\tsetRGB( r, g, b ) {\n\n\t\tthis.r = r;\n\t\tthis.g = g;\n\t\tthis.b = b;\n\n\t\treturn this;\n\n\t}\n\n\tsetHSL( h, s, l ) {\n\n\t\t// h,s,l ranges are in 0.0 - 1.0\n\t\th = MathUtils.euclideanModulo( h, 1 );\n\t\ts = MathUtils.clamp( s, 0, 1 );\n\t\tl = MathUtils.clamp( l, 0, 1 );\n\n\t\tif ( s === 0 ) {\n\n\t\t\tthis.r = this.g = this.b = l;\n\n\t\t} else {\n\n\t\t\tconst p = l <= 0.5 ? l * ( 1 + s ) : l + s - ( l * s );\n\t\t\tconst q = ( 2 * l ) - p;\n\n\t\t\tthis.r = hue2rgb( q, p, h + 1 / 3 );\n\t\t\tthis.g = hue2rgb( q, p, h );\n\t\t\tthis.b = hue2rgb( q, p, h - 1 / 3 );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetStyle( style ) {\n\n\t\tfunction handleAlpha( string ) {\n\n\t\t\tif ( string === undefined ) return;\n\n\t\t\tif ( parseFloat( string ) < 1 ) {\n\n\t\t\t\tconsole.warn( 'THREE.Color: Alpha component of ' + style + ' will be ignored.' );\n\n\t\t\t}\n\n\t\t}\n\n\n\t\tlet m;\n\n\t\tif ( m = /^((?:rgb|hsl)a?)\\(\\s*([^\\)]*)\\)/.exec( style ) ) {\n\n\t\t\t// rgb / hsl\n\n\t\t\tlet color;\n\t\t\tconst name = m[ 1 ];\n\t\t\tconst components = m[ 2 ];\n\n\t\t\tswitch ( name ) {\n\n\t\t\t\tcase 'rgb':\n\t\t\t\tcase 'rgba':\n\n\t\t\t\t\tif ( color = /^(\\d+)\\s*,\\s*(\\d+)\\s*,\\s*(\\d+)\\s*(?:,\\s*(\\d*\\.?\\d+)\\s*)?$/.exec( components ) ) {\n\n\t\t\t\t\t\t// rgb(255,0,0) rgba(255,0,0,0.5)\n\t\t\t\t\t\tthis.r = Math.min( 255, parseInt( color[ 1 ], 10 ) ) / 255;\n\t\t\t\t\t\tthis.g = Math.min( 255, parseInt( color[ 2 ], 10 ) ) / 255;\n\t\t\t\t\t\tthis.b = Math.min( 255, parseInt( color[ 3 ], 10 ) ) / 255;\n\n\t\t\t\t\t\thandleAlpha( color[ 4 ] );\n\n\t\t\t\t\t\treturn this;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( color = /^(\\d+)\\%\\s*,\\s*(\\d+)\\%\\s*,\\s*(\\d+)\\%\\s*(?:,\\s*(\\d*\\.?\\d+)\\s*)?$/.exec( components ) ) {\n\n\t\t\t\t\t\t// rgb(100%,0%,0%) rgba(100%,0%,0%,0.5)\n\t\t\t\t\t\tthis.r = Math.min( 100, parseInt( color[ 1 ], 10 ) ) / 100;\n\t\t\t\t\t\tthis.g = Math.min( 100, parseInt( color[ 2 ], 10 ) ) / 100;\n\t\t\t\t\t\tthis.b = Math.min( 100, parseInt( color[ 3 ], 10 ) ) / 100;\n\n\t\t\t\t\t\thandleAlpha( color[ 4 ] );\n\n\t\t\t\t\t\treturn this;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'hsl':\n\t\t\t\tcase 'hsla':\n\n\t\t\t\t\tif ( color = /^(\\d*\\.?\\d+)\\s*,\\s*(\\d+)\\%\\s*,\\s*(\\d+)\\%\\s*(?:,\\s*(\\d*\\.?\\d+)\\s*)?$/.exec( components ) ) {\n\n\t\t\t\t\t\t// hsl(120,50%,50%) hsla(120,50%,50%,0.5)\n\t\t\t\t\t\tconst h = parseFloat( color[ 1 ] ) / 360;\n\t\t\t\t\t\tconst s = parseInt( color[ 2 ], 10 ) / 100;\n\t\t\t\t\t\tconst l = parseInt( color[ 3 ], 10 ) / 100;\n\n\t\t\t\t\t\thandleAlpha( color[ 4 ] );\n\n\t\t\t\t\t\treturn this.setHSL( h, s, l );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t} else if ( m = /^\\#([A-Fa-f\\d]+)$/.exec( style ) ) {\n\n\t\t\t// hex color\n\n\t\t\tconst hex = m[ 1 ];\n\t\t\tconst size = hex.length;\n\n\t\t\tif ( size === 3 ) {\n\n\t\t\t\t// #ff0\n\t\t\t\tthis.r = parseInt( hex.charAt( 0 ) + hex.charAt( 0 ), 16 ) / 255;\n\t\t\t\tthis.g = parseInt( hex.charAt( 1 ) + hex.charAt( 1 ), 16 ) / 255;\n\t\t\t\tthis.b = parseInt( hex.charAt( 2 ) + hex.charAt( 2 ), 16 ) / 255;\n\n\t\t\t\treturn this;\n\n\t\t\t} else if ( size === 6 ) {\n\n\t\t\t\t// #ff0000\n\t\t\t\tthis.r = parseInt( hex.charAt( 0 ) + hex.charAt( 1 ), 16 ) / 255;\n\t\t\t\tthis.g = parseInt( hex.charAt( 2 ) + hex.charAt( 3 ), 16 ) / 255;\n\t\t\t\tthis.b = parseInt( hex.charAt( 4 ) + hex.charAt( 5 ), 16 ) / 255;\n\n\t\t\t\treturn this;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( style && style.length > 0 ) {\n\n\t\t\treturn this.setColorName( style );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetColorName( style ) {\n\n\t\t// color keywords\n\t\tconst hex = _colorKeywords[ style ];\n\n\t\tif ( hex !== undefined ) {\n\n\t\t\t// red\n\t\t\tthis.setHex( hex );\n\n\t\t} else {\n\n\t\t\t// unknown color\n\t\t\tconsole.warn( 'THREE.Color: Unknown color ' + style );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor( this.r, this.g, this.b );\n\n\t}\n\n\tcopy( color ) {\n\n\t\tthis.r = color.r;\n\t\tthis.g = color.g;\n\t\tthis.b = color.b;\n\n\t\treturn this;\n\n\t}\n\n\tcopyGammaToLinear( color, gammaFactor = 2.0 ) {\n\n\t\tthis.r = Math.pow( color.r, gammaFactor );\n\t\tthis.g = Math.pow( color.g, gammaFactor );\n\t\tthis.b = Math.pow( color.b, gammaFactor );\n\n\t\treturn this;\n\n\t}\n\n\tcopyLinearToGamma( color, gammaFactor = 2.0 ) {\n\n\t\tconst safeInverse = ( gammaFactor > 0 ) ? ( 1.0 / gammaFactor ) : 1.0;\n\n\t\tthis.r = Math.pow( color.r, safeInverse );\n\t\tthis.g = Math.pow( color.g, safeInverse );\n\t\tthis.b = Math.pow( color.b, safeInverse );\n\n\t\treturn this;\n\n\t}\n\n\tconvertGammaToLinear( gammaFactor ) {\n\n\t\tthis.copyGammaToLinear( this, gammaFactor );\n\n\t\treturn this;\n\n\t}\n\n\tconvertLinearToGamma( gammaFactor ) {\n\n\t\tthis.copyLinearToGamma( this, gammaFactor );\n\n\t\treturn this;\n\n\t}\n\n\tcopySRGBToLinear( color ) {\n\n\t\tthis.r = SRGBToLinear( color.r );\n\t\tthis.g = SRGBToLinear( color.g );\n\t\tthis.b = SRGBToLinear( color.b );\n\n\t\treturn this;\n\n\t}\n\n\tcopyLinearToSRGB( color ) {\n\n\t\tthis.r = LinearToSRGB( color.r );\n\t\tthis.g = LinearToSRGB( color.g );\n\t\tthis.b = LinearToSRGB( color.b );\n\n\t\treturn this;\n\n\t}\n\n\tconvertSRGBToLinear() {\n\n\t\tthis.copySRGBToLinear( this );\n\n\t\treturn this;\n\n\t}\n\n\tconvertLinearToSRGB() {\n\n\t\tthis.copyLinearToSRGB( this );\n\n\t\treturn this;\n\n\t}\n\n\tgetHex() {\n\n\t\treturn ( this.r * 255 ) << 16 ^ ( this.g * 255 ) << 8 ^ ( this.b * 255 ) << 0;\n\n\t}\n\n\tgetHexString() {\n\n\t\treturn ( '000000' + this.getHex().toString( 16 ) ).slice( - 6 );\n\n\t}\n\n\tgetHSL( target ) {\n\n\t\t// h,s,l ranges are in 0.0 - 1.0\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Color: .getHSL() target is now required' );\n\t\t\ttarget = { h: 0, s: 0, l: 0 };\n\n\t\t}\n\n\t\tconst r = this.r, g = this.g, b = this.b;\n\n\t\tconst max = Math.max( r, g, b );\n\t\tconst min = Math.min( r, g, b );\n\n\t\tlet hue, saturation;\n\t\tconst lightness = ( min + max ) / 2.0;\n\n\t\tif ( min === max ) {\n\n\t\t\thue = 0;\n\t\t\tsaturation = 0;\n\n\t\t} else {\n\n\t\t\tconst delta = max - min;\n\n\t\t\tsaturation = lightness <= 0.5 ? delta / ( max + min ) : delta / ( 2 - max - min );\n\n\t\t\tswitch ( max ) {\n\n\t\t\t\tcase r: hue = ( g - b ) / delta + ( g < b ? 6 : 0 ); break;\n\t\t\t\tcase g: hue = ( b - r ) / delta + 2; break;\n\t\t\t\tcase b: hue = ( r - g ) / delta + 4; break;\n\n\t\t\t}\n\n\t\t\thue /= 6;\n\n\t\t}\n\n\t\ttarget.h = hue;\n\t\ttarget.s = saturation;\n\t\ttarget.l = lightness;\n\n\t\treturn target;\n\n\t}\n\n\tgetStyle() {\n\n\t\treturn 'rgb(' + ( ( this.r * 255 ) | 0 ) + ',' + ( ( this.g * 255 ) | 0 ) + ',' + ( ( this.b * 255 ) | 0 ) + ')';\n\n\t}\n\n\toffsetHSL( h, s, l ) {\n\n\t\tthis.getHSL( _hslA );\n\n\t\t_hslA.h += h; _hslA.s += s; _hslA.l += l;\n\n\t\tthis.setHSL( _hslA.h, _hslA.s, _hslA.l );\n\n\t\treturn this;\n\n\t}\n\n\tadd( color ) {\n\n\t\tthis.r += color.r;\n\t\tthis.g += color.g;\n\t\tthis.b += color.b;\n\n\t\treturn this;\n\n\t}\n\n\taddColors( color1, color2 ) {\n\n\t\tthis.r = color1.r + color2.r;\n\t\tthis.g = color1.g + color2.g;\n\t\tthis.b = color1.b + color2.b;\n\n\t\treturn this;\n\n\t}\n\n\taddScalar( s ) {\n\n\t\tthis.r += s;\n\t\tthis.g += s;\n\t\tthis.b += s;\n\n\t\treturn this;\n\n\t}\n\n\tsub( color ) {\n\n\t\tthis.r = Math.max( 0, this.r - color.r );\n\t\tthis.g = Math.max( 0, this.g - color.g );\n\t\tthis.b = Math.max( 0, this.b - color.b );\n\n\t\treturn this;\n\n\t}\n\n\tmultiply( color ) {\n\n\t\tthis.r *= color.r;\n\t\tthis.g *= color.g;\n\t\tthis.b *= color.b;\n\n\t\treturn this;\n\n\t}\n\n\tmultiplyScalar( s ) {\n\n\t\tthis.r *= s;\n\t\tthis.g *= s;\n\t\tthis.b *= s;\n\n\t\treturn this;\n\n\t}\n\n\tlerp( color, alpha ) {\n\n\t\tthis.r += ( color.r - this.r ) * alpha;\n\t\tthis.g += ( color.g - this.g ) * alpha;\n\t\tthis.b += ( color.b - this.b ) * alpha;\n\n\t\treturn this;\n\n\t}\n\n\tlerpHSL( color, alpha ) {\n\n\t\tthis.getHSL( _hslA );\n\t\tcolor.getHSL( _hslB );\n\n\t\tconst h = MathUtils.lerp( _hslA.h, _hslB.h, alpha );\n\t\tconst s = MathUtils.lerp( _hslA.s, _hslB.s, alpha );\n\t\tconst l = MathUtils.lerp( _hslA.l, _hslB.l, alpha );\n\n\t\tthis.setHSL( h, s, l );\n\n\t\treturn this;\n\n\t}\n\n\tequals( c ) {\n\n\t\treturn ( c.r === this.r ) && ( c.g === this.g ) && ( c.b === this.b );\n\n\t}\n\n\tfromArray( array, offset = 0 ) {\n\n\t\tthis.r = array[ offset ];\n\t\tthis.g = array[ offset + 1 ];\n\t\tthis.b = array[ offset + 2 ];\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tarray[ offset ] = this.r;\n\t\tarray[ offset + 1 ] = this.g;\n\t\tarray[ offset + 2 ] = this.b;\n\n\t\treturn array;\n\n\t}\n\n\tfromBufferAttribute( attribute, index ) {\n\n\t\tthis.r = attribute.getX( index );\n\t\tthis.g = attribute.getY( index );\n\t\tthis.b = attribute.getZ( index );\n\n\t\tif ( attribute.normalized === true ) {\n\n\t\t\t// assuming Uint8Array\n\n\t\t\tthis.r /= 255;\n\t\t\tthis.g /= 255;\n\t\t\tthis.b /= 255;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON() {\n\n\t\treturn this.getHex();\n\n\t}\n\n}\n\nColor.NAMES = _colorKeywords;\nColor.prototype.r = 1;\nColor.prototype.g = 1;\nColor.prototype.b = 1;\n\nclass Face3 {\n\n\tconstructor( a, b, c, normal, color, materialIndex = 0 ) {\n\n\t\tthis.a = a;\n\t\tthis.b = b;\n\t\tthis.c = c;\n\n\t\tthis.normal = ( normal && normal.isVector3 ) ? normal : new Vector3();\n\t\tthis.vertexNormals = Array.isArray( normal ) ? normal : [];\n\n\t\tthis.color = ( color && color.isColor ) ? color : new Color();\n\t\tthis.vertexColors = Array.isArray( color ) ? color : [];\n\n\t\tthis.materialIndex = materialIndex;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tthis.a = source.a;\n\t\tthis.b = source.b;\n\t\tthis.c = source.c;\n\n\t\tthis.normal.copy( source.normal );\n\t\tthis.color.copy( source.color );\n\n\t\tthis.materialIndex = source.materialIndex;\n\n\t\tfor ( let i = 0, il = source.vertexNormals.length; i < il; i ++ ) {\n\n\t\t\tthis.vertexNormals[ i ] = source.vertexNormals[ i ].clone();\n\n\t\t}\n\n\t\tfor ( let i = 0, il = source.vertexColors.length; i < il; i ++ ) {\n\n\t\t\tthis.vertexColors[ i ] = source.vertexColors[ i ].clone();\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n}\n\nlet materialId = 0;\n\nfunction Material() {\n\n\tObject.defineProperty( this, 'id', { value: materialId ++ } );\n\n\tthis.uuid = MathUtils.generateUUID();\n\n\tthis.name = '';\n\tthis.type = 'Material';\n\n\tthis.fog = true;\n\n\tthis.blending = NormalBlending;\n\tthis.side = FrontSide;\n\tthis.flatShading = false;\n\tthis.vertexColors = false;\n\n\tthis.opacity = 1;\n\tthis.transparent = false;\n\n\tthis.blendSrc = SrcAlphaFactor;\n\tthis.blendDst = OneMinusSrcAlphaFactor;\n\tthis.blendEquation = AddEquation;\n\tthis.blendSrcAlpha = null;\n\tthis.blendDstAlpha = null;\n\tthis.blendEquationAlpha = null;\n\n\tthis.depthFunc = LessEqualDepth;\n\tthis.depthTest = true;\n\tthis.depthWrite = true;\n\n\tthis.stencilWriteMask = 0xff;\n\tthis.stencilFunc = AlwaysStencilFunc;\n\tthis.stencilRef = 0;\n\tthis.stencilFuncMask = 0xff;\n\tthis.stencilFail = KeepStencilOp;\n\tthis.stencilZFail = KeepStencilOp;\n\tthis.stencilZPass = KeepStencilOp;\n\tthis.stencilWrite = false;\n\n\tthis.clippingPlanes = null;\n\tthis.clipIntersection = false;\n\tthis.clipShadows = false;\n\n\tthis.shadowSide = null;\n\n\tthis.colorWrite = true;\n\n\tthis.precision = null; // override the renderer's default precision for this material\n\n\tthis.polygonOffset = false;\n\tthis.polygonOffsetFactor = 0;\n\tthis.polygonOffsetUnits = 0;\n\n\tthis.dithering = false;\n\n\tthis.alphaTest = 0;\n\tthis.premultipliedAlpha = false;\n\n\tthis.visible = true;\n\n\tthis.toneMapped = true;\n\n\tthis.userData = {};\n\n\tthis.version = 0;\n\n}\n\nMaterial.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {\n\n\tconstructor: Material,\n\n\tisMaterial: true,\n\n\tonBeforeCompile: function ( /* shaderobject, renderer */ ) {},\n\n\tcustomProgramCacheKey: function () {\n\n\t\treturn this.onBeforeCompile.toString();\n\n\t},\n\n\tsetValues: function ( values ) {\n\n\t\tif ( values === undefined ) return;\n\n\t\tfor ( const key in values ) {\n\n\t\t\tconst newValue = values[ key ];\n\n\t\t\tif ( newValue === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.Material: \\'' + key + '\\' parameter is undefined.' );\n\t\t\t\tcontinue;\n\n\t\t\t}\n\n\t\t\t// for backward compatability if shading is set in the constructor\n\t\t\tif ( key === 'shading' ) {\n\n\t\t\t\tconsole.warn( 'THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.' );\n\t\t\t\tthis.flatShading = ( newValue === FlatShading ) ? true : false;\n\t\t\t\tcontinue;\n\n\t\t\t}\n\n\t\t\tconst currentValue = this[ key ];\n\n\t\t\tif ( currentValue === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.' + this.type + ': \\'' + key + '\\' is not a property of this material.' );\n\t\t\t\tcontinue;\n\n\t\t\t}\n\n\t\t\tif ( currentValue && currentValue.isColor ) {\n\n\t\t\t\tcurrentValue.set( newValue );\n\n\t\t\t} else if ( ( currentValue && currentValue.isVector3 ) && ( newValue && newValue.isVector3 ) ) {\n\n\t\t\t\tcurrentValue.copy( newValue );\n\n\t\t\t} else {\n\n\t\t\t\tthis[ key ] = newValue;\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\ttoJSON: function ( meta ) {\n\n\t\tconst isRoot = ( meta === undefined || typeof meta === 'string' );\n\n\t\tif ( isRoot ) {\n\n\t\t\tmeta = {\n\t\t\t\ttextures: {},\n\t\t\t\timages: {}\n\t\t\t};\n\n\t\t}\n\n\t\tconst data = {\n\t\t\tmetadata: {\n\t\t\t\tversion: 4.5,\n\t\t\t\ttype: 'Material',\n\t\t\t\tgenerator: 'Material.toJSON'\n\t\t\t}\n\t\t};\n\n\t\t// standard Material serialization\n\t\tdata.uuid = this.uuid;\n\t\tdata.type = this.type;\n\n\t\tif ( this.name !== '' ) data.name = this.name;\n\n\t\tif ( this.color && this.color.isColor ) data.color = this.color.getHex();\n\n\t\tif ( this.roughness !== undefined ) data.roughness = this.roughness;\n\t\tif ( this.metalness !== undefined ) data.metalness = this.metalness;\n\n\t\tif ( this.sheen && this.sheen.isColor ) data.sheen = this.sheen.getHex();\n\t\tif ( this.emissive && this.emissive.isColor ) data.emissive = this.emissive.getHex();\n\t\tif ( this.emissiveIntensity && this.emissiveIntensity !== 1 ) data.emissiveIntensity = this.emissiveIntensity;\n\n\t\tif ( this.specular && this.specular.isColor ) data.specular = this.specular.getHex();\n\t\tif ( this.shininess !== undefined ) data.shininess = this.shininess;\n\t\tif ( this.clearcoat !== undefined ) data.clearcoat = this.clearcoat;\n\t\tif ( this.clearcoatRoughness !== undefined ) data.clearcoatRoughness = this.clearcoatRoughness;\n\n\t\tif ( this.clearcoatMap && this.clearcoatMap.isTexture ) {\n\n\t\t\tdata.clearcoatMap = this.clearcoatMap.toJSON( meta ).uuid;\n\n\t\t}\n\n\t\tif ( this.clearcoatRoughnessMap && this.clearcoatRoughnessMap.isTexture ) {\n\n\t\t\tdata.clearcoatRoughnessMap = this.clearcoatRoughnessMap.toJSON( meta ).uuid;\n\n\t\t}\n\n\t\tif ( this.clearcoatNormalMap && this.clearcoatNormalMap.isTexture ) {\n\n\t\t\tdata.clearcoatNormalMap = this.clearcoatNormalMap.toJSON( meta ).uuid;\n\t\t\tdata.clearcoatNormalScale = this.clearcoatNormalScale.toArray();\n\n\t\t}\n\n\t\tif ( this.map && this.map.isTexture ) data.map = this.map.toJSON( meta ).uuid;\n\t\tif ( this.matcap && this.matcap.isTexture ) data.matcap = this.matcap.toJSON( meta ).uuid;\n\t\tif ( this.alphaMap && this.alphaMap.isTexture ) data.alphaMap = this.alphaMap.toJSON( meta ).uuid;\n\t\tif ( this.lightMap && this.lightMap.isTexture ) data.lightMap = this.lightMap.toJSON( meta ).uuid;\n\n\t\tif ( this.aoMap && this.aoMap.isTexture ) {\n\n\t\t\tdata.aoMap = this.aoMap.toJSON( meta ).uuid;\n\t\t\tdata.aoMapIntensity = this.aoMapIntensity;\n\n\t\t}\n\n\t\tif ( this.bumpMap && this.bumpMap.isTexture ) {\n\n\t\t\tdata.bumpMap = this.bumpMap.toJSON( meta ).uuid;\n\t\t\tdata.bumpScale = this.bumpScale;\n\n\t\t}\n\n\t\tif ( this.normalMap && this.normalMap.isTexture ) {\n\n\t\t\tdata.normalMap = this.normalMap.toJSON( meta ).uuid;\n\t\t\tdata.normalMapType = this.normalMapType;\n\t\t\tdata.normalScale = this.normalScale.toArray();\n\n\t\t}\n\n\t\tif ( this.displacementMap && this.displacementMap.isTexture ) {\n\n\t\t\tdata.displacementMap = this.displacementMap.toJSON( meta ).uuid;\n\t\t\tdata.displacementScale = this.displacementScale;\n\t\t\tdata.displacementBias = this.displacementBias;\n\n\t\t}\n\n\t\tif ( this.roughnessMap && this.roughnessMap.isTexture ) data.roughnessMap = this.roughnessMap.toJSON( meta ).uuid;\n\t\tif ( this.metalnessMap && this.metalnessMap.isTexture ) data.metalnessMap = this.metalnessMap.toJSON( meta ).uuid;\n\n\t\tif ( this.emissiveMap && this.emissiveMap.isTexture ) data.emissiveMap = this.emissiveMap.toJSON( meta ).uuid;\n\t\tif ( this.specularMap && this.specularMap.isTexture ) data.specularMap = this.specularMap.toJSON( meta ).uuid;\n\n\t\tif ( this.envMap && this.envMap.isTexture ) {\n\n\t\t\tdata.envMap = this.envMap.toJSON( meta ).uuid;\n\t\t\tdata.reflectivity = this.reflectivity; // Scale behind envMap\n\t\t\tdata.refractionRatio = this.refractionRatio;\n\n\t\t\tif ( this.combine !== undefined ) data.combine = this.combine;\n\t\t\tif ( this.envMapIntensity !== undefined ) data.envMapIntensity = this.envMapIntensity;\n\n\t\t}\n\n\t\tif ( this.gradientMap && this.gradientMap.isTexture ) {\n\n\t\t\tdata.gradientMap = this.gradientMap.toJSON( meta ).uuid;\n\n\t\t}\n\n\t\tif ( this.size !== undefined ) data.size = this.size;\n\t\tif ( this.sizeAttenuation !== undefined ) data.sizeAttenuation = this.sizeAttenuation;\n\n\t\tif ( this.blending !== NormalBlending ) data.blending = this.blending;\n\t\tif ( this.flatShading === true ) data.flatShading = this.flatShading;\n\t\tif ( this.side !== FrontSide ) data.side = this.side;\n\t\tif ( this.vertexColors ) data.vertexColors = true;\n\n\t\tif ( this.opacity < 1 ) data.opacity = this.opacity;\n\t\tif ( this.transparent === true ) data.transparent = this.transparent;\n\n\t\tdata.depthFunc = this.depthFunc;\n\t\tdata.depthTest = this.depthTest;\n\t\tdata.depthWrite = this.depthWrite;\n\n\t\tdata.stencilWrite = this.stencilWrite;\n\t\tdata.stencilWriteMask = this.stencilWriteMask;\n\t\tdata.stencilFunc = this.stencilFunc;\n\t\tdata.stencilRef = this.stencilRef;\n\t\tdata.stencilFuncMask = this.stencilFuncMask;\n\t\tdata.stencilFail = this.stencilFail;\n\t\tdata.stencilZFail = this.stencilZFail;\n\t\tdata.stencilZPass = this.stencilZPass;\n\n\t\t// rotation (SpriteMaterial)\n\t\tif ( this.rotation && this.rotation !== 0 ) data.rotation = this.rotation;\n\n\t\tif ( this.polygonOffset === true ) data.polygonOffset = true;\n\t\tif ( this.polygonOffsetFactor !== 0 ) data.polygonOffsetFactor = this.polygonOffsetFactor;\n\t\tif ( this.polygonOffsetUnits !== 0 ) data.polygonOffsetUnits = this.polygonOffsetUnits;\n\n\t\tif ( this.linewidth && this.linewidth !== 1 ) data.linewidth = this.linewidth;\n\t\tif ( this.dashSize !== undefined ) data.dashSize = this.dashSize;\n\t\tif ( this.gapSize !== undefined ) data.gapSize = this.gapSize;\n\t\tif ( this.scale !== undefined ) data.scale = this.scale;\n\n\t\tif ( this.dithering === true ) data.dithering = true;\n\n\t\tif ( this.alphaTest > 0 ) data.alphaTest = this.alphaTest;\n\t\tif ( this.premultipliedAlpha === true ) data.premultipliedAlpha = this.premultipliedAlpha;\n\n\t\tif ( this.wireframe === true ) data.wireframe = this.wireframe;\n\t\tif ( this.wireframeLinewidth > 1 ) data.wireframeLinewidth = this.wireframeLinewidth;\n\t\tif ( this.wireframeLinecap !== 'round' ) data.wireframeLinecap = this.wireframeLinecap;\n\t\tif ( this.wireframeLinejoin !== 'round' ) data.wireframeLinejoin = this.wireframeLinejoin;\n\n\t\tif ( this.morphTargets === true ) data.morphTargets = true;\n\t\tif ( this.morphNormals === true ) data.morphNormals = true;\n\t\tif ( this.skinning === true ) data.skinning = true;\n\n\t\tif ( this.visible === false ) data.visible = false;\n\n\t\tif ( this.toneMapped === false ) data.toneMapped = false;\n\n\t\tif ( JSON.stringify( this.userData ) !== '{}' ) data.userData = this.userData;\n\n\t\t// TODO: Copied from Object3D.toJSON\n\n\t\tfunction extractFromCache( cache ) {\n\n\t\t\tconst values = [];\n\n\t\t\tfor ( const key in cache ) {\n\n\t\t\t\tconst data = cache[ key ];\n\t\t\t\tdelete data.metadata;\n\t\t\t\tvalues.push( data );\n\n\t\t\t}\n\n\t\t\treturn values;\n\n\t\t}\n\n\t\tif ( isRoot ) {\n\n\t\t\tconst textures = extractFromCache( meta.textures );\n\t\t\tconst images = extractFromCache( meta.images );\n\n\t\t\tif ( textures.length > 0 ) data.textures = textures;\n\t\t\tif ( images.length > 0 ) data.images = images;\n\n\t\t}\n\n\t\treturn data;\n\n\t},\n\n\tclone: function () {\n\n\t\treturn new this.constructor().copy( this );\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\tthis.name = source.name;\n\n\t\tthis.fog = source.fog;\n\n\t\tthis.blending = source.blending;\n\t\tthis.side = source.side;\n\t\tthis.flatShading = source.flatShading;\n\t\tthis.vertexColors = source.vertexColors;\n\n\t\tthis.opacity = source.opacity;\n\t\tthis.transparent = source.transparent;\n\n\t\tthis.blendSrc = source.blendSrc;\n\t\tthis.blendDst = source.blendDst;\n\t\tthis.blendEquation = source.blendEquation;\n\t\tthis.blendSrcAlpha = source.blendSrcAlpha;\n\t\tthis.blendDstAlpha = source.blendDstAlpha;\n\t\tthis.blendEquationAlpha = source.blendEquationAlpha;\n\n\t\tthis.depthFunc = source.depthFunc;\n\t\tthis.depthTest = source.depthTest;\n\t\tthis.depthWrite = source.depthWrite;\n\n\t\tthis.stencilWriteMask = source.stencilWriteMask;\n\t\tthis.stencilFunc = source.stencilFunc;\n\t\tthis.stencilRef = source.stencilRef;\n\t\tthis.stencilFuncMask = source.stencilFuncMask;\n\t\tthis.stencilFail = source.stencilFail;\n\t\tthis.stencilZFail = source.stencilZFail;\n\t\tthis.stencilZPass = source.stencilZPass;\n\t\tthis.stencilWrite = source.stencilWrite;\n\n\t\tconst srcPlanes = source.clippingPlanes;\n\t\tlet dstPlanes = null;\n\n\t\tif ( srcPlanes !== null ) {\n\n\t\t\tconst n = srcPlanes.length;\n\t\t\tdstPlanes = new Array( n );\n\n\t\t\tfor ( let i = 0; i !== n; ++ i ) {\n\n\t\t\t\tdstPlanes[ i ] = srcPlanes[ i ].clone();\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis.clippingPlanes = dstPlanes;\n\t\tthis.clipIntersection = source.clipIntersection;\n\t\tthis.clipShadows = source.clipShadows;\n\n\t\tthis.shadowSide = source.shadowSide;\n\n\t\tthis.colorWrite = source.colorWrite;\n\n\t\tthis.precision = source.precision;\n\n\t\tthis.polygonOffset = source.polygonOffset;\n\t\tthis.polygonOffsetFactor = source.polygonOffsetFactor;\n\t\tthis.polygonOffsetUnits = source.polygonOffsetUnits;\n\n\t\tthis.dithering = source.dithering;\n\n\t\tthis.alphaTest = source.alphaTest;\n\t\tthis.premultipliedAlpha = source.premultipliedAlpha;\n\n\t\tthis.visible = source.visible;\n\n\t\tthis.toneMapped = source.toneMapped;\n\n\t\tthis.userData = JSON.parse( JSON.stringify( source.userData ) );\n\n\t\treturn this;\n\n\t},\n\n\tdispose: function () {\n\n\t\tthis.dispatchEvent( { type: 'dispose' } );\n\n\t}\n\n} );\n\nObject.defineProperty( Material.prototype, 'needsUpdate', {\n\n\tset: function ( value ) {\n\n\t\tif ( value === true ) this.version ++;\n\n\t}\n\n} );\n\n/**\n * parameters = {\n *  color: <hex>,\n *  opacity: <float>,\n *  map: new THREE.Texture( <Image> ),\n *\n *  lightMap: new THREE.Texture( <Image> ),\n *  lightMapIntensity: <float>\n *\n *  aoMap: new THREE.Texture( <Image> ),\n *  aoMapIntensity: <float>\n *\n *  specularMap: new THREE.Texture( <Image> ),\n *\n *  alphaMap: new THREE.Texture( <Image> ),\n *\n *  envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),\n *  combine: THREE.Multiply,\n *  reflectivity: <float>,\n *  refractionRatio: <float>,\n *\n *  depthTest: <bool>,\n *  depthWrite: <bool>,\n *\n *  wireframe: <boolean>,\n *  wireframeLinewidth: <float>,\n *\n *  skinning: <bool>,\n *  morphTargets: <bool>\n * }\n */\n\nfunction MeshBasicMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.type = 'MeshBasicMaterial';\n\n\tthis.color = new Color( 0xffffff ); // emissive\n\n\tthis.map = null;\n\n\tthis.lightMap = null;\n\tthis.lightMapIntensity = 1.0;\n\n\tthis.aoMap = null;\n\tthis.aoMapIntensity = 1.0;\n\n\tthis.specularMap = null;\n\n\tthis.alphaMap = null;\n\n\tthis.envMap = null;\n\tthis.combine = MultiplyOperation;\n\tthis.reflectivity = 1;\n\tthis.refractionRatio = 0.98;\n\n\tthis.wireframe = false;\n\tthis.wireframeLinewidth = 1;\n\tthis.wireframeLinecap = 'round';\n\tthis.wireframeLinejoin = 'round';\n\n\tthis.skinning = false;\n\tthis.morphTargets = false;\n\n\tthis.setValues( parameters );\n\n}\n\nMeshBasicMaterial.prototype = Object.create( Material.prototype );\nMeshBasicMaterial.prototype.constructor = MeshBasicMaterial;\n\nMeshBasicMaterial.prototype.isMeshBasicMaterial = true;\n\nMeshBasicMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.color.copy( source.color );\n\n\tthis.map = source.map;\n\n\tthis.lightMap = source.lightMap;\n\tthis.lightMapIntensity = source.lightMapIntensity;\n\n\tthis.aoMap = source.aoMap;\n\tthis.aoMapIntensity = source.aoMapIntensity;\n\n\tthis.specularMap = source.specularMap;\n\n\tthis.alphaMap = source.alphaMap;\n\n\tthis.envMap = source.envMap;\n\tthis.combine = source.combine;\n\tthis.reflectivity = source.reflectivity;\n\tthis.refractionRatio = source.refractionRatio;\n\n\tthis.wireframe = source.wireframe;\n\tthis.wireframeLinewidth = source.wireframeLinewidth;\n\tthis.wireframeLinecap = source.wireframeLinecap;\n\tthis.wireframeLinejoin = source.wireframeLinejoin;\n\n\tthis.skinning = source.skinning;\n\tthis.morphTargets = source.morphTargets;\n\n\treturn this;\n\n};\n\nconst _vector$3 = new Vector3();\nconst _vector2$1 = new Vector2();\n\nfunction BufferAttribute( array, itemSize, normalized ) {\n\n\tif ( Array.isArray( array ) ) {\n\n\t\tthrow new TypeError( 'THREE.BufferAttribute: array should be a Typed Array.' );\n\n\t}\n\n\tthis.name = '';\n\n\tthis.array = array;\n\tthis.itemSize = itemSize;\n\tthis.count = array !== undefined ? array.length / itemSize : 0;\n\tthis.normalized = normalized === true;\n\n\tthis.usage = StaticDrawUsage;\n\tthis.updateRange = { offset: 0, count: - 1 };\n\n\tthis.version = 0;\n\n}\n\nObject.defineProperty( BufferAttribute.prototype, 'needsUpdate', {\n\n\tset: function ( value ) {\n\n\t\tif ( value === true ) this.version ++;\n\n\t}\n\n} );\n\nObject.assign( BufferAttribute.prototype, {\n\n\tisBufferAttribute: true,\n\n\tonUploadCallback: function () {},\n\n\tsetUsage: function ( value ) {\n\n\t\tthis.usage = value;\n\n\t\treturn this;\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\tthis.name = source.name;\n\t\tthis.array = new source.array.constructor( source.array );\n\t\tthis.itemSize = source.itemSize;\n\t\tthis.count = source.count;\n\t\tthis.normalized = source.normalized;\n\n\t\tthis.usage = source.usage;\n\n\t\treturn this;\n\n\t},\n\n\tcopyAt: function ( index1, attribute, index2 ) {\n\n\t\tindex1 *= this.itemSize;\n\t\tindex2 *= attribute.itemSize;\n\n\t\tfor ( let i = 0, l = this.itemSize; i < l; i ++ ) {\n\n\t\t\tthis.array[ index1 + i ] = attribute.array[ index2 + i ];\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tcopyArray: function ( array ) {\n\n\t\tthis.array.set( array );\n\n\t\treturn this;\n\n\t},\n\n\tcopyColorsArray: function ( colors ) {\n\n\t\tconst array = this.array;\n\t\tlet offset = 0;\n\n\t\tfor ( let i = 0, l = colors.length; i < l; i ++ ) {\n\n\t\t\tlet color = colors[ i ];\n\n\t\t\tif ( color === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.BufferAttribute.copyColorsArray(): color is undefined', i );\n\t\t\t\tcolor = new Color();\n\n\t\t\t}\n\n\t\t\tarray[ offset ++ ] = color.r;\n\t\t\tarray[ offset ++ ] = color.g;\n\t\t\tarray[ offset ++ ] = color.b;\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tcopyVector2sArray: function ( vectors ) {\n\n\t\tconst array = this.array;\n\t\tlet offset = 0;\n\n\t\tfor ( let i = 0, l = vectors.length; i < l; i ++ ) {\n\n\t\t\tlet vector = vectors[ i ];\n\n\t\t\tif ( vector === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.BufferAttribute.copyVector2sArray(): vector is undefined', i );\n\t\t\t\tvector = new Vector2();\n\n\t\t\t}\n\n\t\t\tarray[ offset ++ ] = vector.x;\n\t\t\tarray[ offset ++ ] = vector.y;\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tcopyVector3sArray: function ( vectors ) {\n\n\t\tconst array = this.array;\n\t\tlet offset = 0;\n\n\t\tfor ( let i = 0, l = vectors.length; i < l; i ++ ) {\n\n\t\t\tlet vector = vectors[ i ];\n\n\t\t\tif ( vector === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.BufferAttribute.copyVector3sArray(): vector is undefined', i );\n\t\t\t\tvector = new Vector3();\n\n\t\t\t}\n\n\t\t\tarray[ offset ++ ] = vector.x;\n\t\t\tarray[ offset ++ ] = vector.y;\n\t\t\tarray[ offset ++ ] = vector.z;\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tcopyVector4sArray: function ( vectors ) {\n\n\t\tconst array = this.array;\n\t\tlet offset = 0;\n\n\t\tfor ( let i = 0, l = vectors.length; i < l; i ++ ) {\n\n\t\t\tlet vector = vectors[ i ];\n\n\t\t\tif ( vector === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.BufferAttribute.copyVector4sArray(): vector is undefined', i );\n\t\t\t\tvector = new Vector4();\n\n\t\t\t}\n\n\t\t\tarray[ offset ++ ] = vector.x;\n\t\t\tarray[ offset ++ ] = vector.y;\n\t\t\tarray[ offset ++ ] = vector.z;\n\t\t\tarray[ offset ++ ] = vector.w;\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tapplyMatrix3: function ( m ) {\n\n\t\tif ( this.itemSize === 2 ) {\n\n\t\t\tfor ( let i = 0, l = this.count; i < l; i ++ ) {\n\n\t\t\t\t_vector2$1.fromBufferAttribute( this, i );\n\t\t\t\t_vector2$1.applyMatrix3( m );\n\n\t\t\t\tthis.setXY( i, _vector2$1.x, _vector2$1.y );\n\n\t\t\t}\n\n\t\t} else if ( this.itemSize === 3 ) {\n\n\t\t\tfor ( let i = 0, l = this.count; i < l; i ++ ) {\n\n\t\t\t\t_vector$3.fromBufferAttribute( this, i );\n\t\t\t\t_vector$3.applyMatrix3( m );\n\n\t\t\t\tthis.setXYZ( i, _vector$3.x, _vector$3.y, _vector$3.z );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tapplyMatrix4: function ( m ) {\n\n\t\tfor ( let i = 0, l = this.count; i < l; i ++ ) {\n\n\t\t\t_vector$3.x = this.getX( i );\n\t\t\t_vector$3.y = this.getY( i );\n\t\t\t_vector$3.z = this.getZ( i );\n\n\t\t\t_vector$3.applyMatrix4( m );\n\n\t\t\tthis.setXYZ( i, _vector$3.x, _vector$3.y, _vector$3.z );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tapplyNormalMatrix: function ( m ) {\n\n\t\tfor ( let i = 0, l = this.count; i < l; i ++ ) {\n\n\t\t\t_vector$3.x = this.getX( i );\n\t\t\t_vector$3.y = this.getY( i );\n\t\t\t_vector$3.z = this.getZ( i );\n\n\t\t\t_vector$3.applyNormalMatrix( m );\n\n\t\t\tthis.setXYZ( i, _vector$3.x, _vector$3.y, _vector$3.z );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\ttransformDirection: function ( m ) {\n\n\t\tfor ( let i = 0, l = this.count; i < l; i ++ ) {\n\n\t\t\t_vector$3.x = this.getX( i );\n\t\t\t_vector$3.y = this.getY( i );\n\t\t\t_vector$3.z = this.getZ( i );\n\n\t\t\t_vector$3.transformDirection( m );\n\n\t\t\tthis.setXYZ( i, _vector$3.x, _vector$3.y, _vector$3.z );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tset: function ( value, offset = 0 ) {\n\n\t\tthis.array.set( value, offset );\n\n\t\treturn this;\n\n\t},\n\n\tgetX: function ( index ) {\n\n\t\treturn this.array[ index * this.itemSize ];\n\n\t},\n\n\tsetX: function ( index, x ) {\n\n\t\tthis.array[ index * this.itemSize ] = x;\n\n\t\treturn this;\n\n\t},\n\n\tgetY: function ( index ) {\n\n\t\treturn this.array[ index * this.itemSize + 1 ];\n\n\t},\n\n\tsetY: function ( index, y ) {\n\n\t\tthis.array[ index * this.itemSize + 1 ] = y;\n\n\t\treturn this;\n\n\t},\n\n\tgetZ: function ( index ) {\n\n\t\treturn this.array[ index * this.itemSize + 2 ];\n\n\t},\n\n\tsetZ: function ( index, z ) {\n\n\t\tthis.array[ index * this.itemSize + 2 ] = z;\n\n\t\treturn this;\n\n\t},\n\n\tgetW: function ( index ) {\n\n\t\treturn this.array[ index * this.itemSize + 3 ];\n\n\t},\n\n\tsetW: function ( index, w ) {\n\n\t\tthis.array[ index * this.itemSize + 3 ] = w;\n\n\t\treturn this;\n\n\t},\n\n\tsetXY: function ( index, x, y ) {\n\n\t\tindex *= this.itemSize;\n\n\t\tthis.array[ index + 0 ] = x;\n\t\tthis.array[ index + 1 ] = y;\n\n\t\treturn this;\n\n\t},\n\n\tsetXYZ: function ( index, x, y, z ) {\n\n\t\tindex *= this.itemSize;\n\n\t\tthis.array[ index + 0 ] = x;\n\t\tthis.array[ index + 1 ] = y;\n\t\tthis.array[ index + 2 ] = z;\n\n\t\treturn this;\n\n\t},\n\n\tsetXYZW: function ( index, x, y, z, w ) {\n\n\t\tindex *= this.itemSize;\n\n\t\tthis.array[ index + 0 ] = x;\n\t\tthis.array[ index + 1 ] = y;\n\t\tthis.array[ index + 2 ] = z;\n\t\tthis.array[ index + 3 ] = w;\n\n\t\treturn this;\n\n\t},\n\n\tonUpload: function ( callback ) {\n\n\t\tthis.onUploadCallback = callback;\n\n\t\treturn this;\n\n\t},\n\n\tclone: function () {\n\n\t\treturn new this.constructor( this.array, this.itemSize ).copy( this );\n\n\t},\n\n\ttoJSON: function () {\n\n\t\treturn {\n\t\t\titemSize: this.itemSize,\n\t\t\ttype: this.array.constructor.name,\n\t\t\tarray: Array.prototype.slice.call( this.array ),\n\t\t\tnormalized: this.normalized\n\t\t};\n\n\t}\n\n} );\n\n//\n\nfunction Int8BufferAttribute( array, itemSize, normalized ) {\n\n\tBufferAttribute.call( this, new Int8Array( array ), itemSize, normalized );\n\n}\n\nInt8BufferAttribute.prototype = Object.create( BufferAttribute.prototype );\nInt8BufferAttribute.prototype.constructor = Int8BufferAttribute;\n\n\nfunction Uint8BufferAttribute( array, itemSize, normalized ) {\n\n\tBufferAttribute.call( this, new Uint8Array( array ), itemSize, normalized );\n\n}\n\nUint8BufferAttribute.prototype = Object.create( BufferAttribute.prototype );\nUint8BufferAttribute.prototype.constructor = Uint8BufferAttribute;\n\n\nfunction Uint8ClampedBufferAttribute( array, itemSize, normalized ) {\n\n\tBufferAttribute.call( this, new Uint8ClampedArray( array ), itemSize, normalized );\n\n}\n\nUint8ClampedBufferAttribute.prototype = Object.create( BufferAttribute.prototype );\nUint8ClampedBufferAttribute.prototype.constructor = Uint8ClampedBufferAttribute;\n\n\nfunction Int16BufferAttribute( array, itemSize, normalized ) {\n\n\tBufferAttribute.call( this, new Int16Array( array ), itemSize, normalized );\n\n}\n\nInt16BufferAttribute.prototype = Object.create( BufferAttribute.prototype );\nInt16BufferAttribute.prototype.constructor = Int16BufferAttribute;\n\n\nfunction Uint16BufferAttribute( array, itemSize, normalized ) {\n\n\tBufferAttribute.call( this, new Uint16Array( array ), itemSize, normalized );\n\n}\n\nUint16BufferAttribute.prototype = Object.create( BufferAttribute.prototype );\nUint16BufferAttribute.prototype.constructor = Uint16BufferAttribute;\n\n\nfunction Int32BufferAttribute( array, itemSize, normalized ) {\n\n\tBufferAttribute.call( this, new Int32Array( array ), itemSize, normalized );\n\n}\n\nInt32BufferAttribute.prototype = Object.create( BufferAttribute.prototype );\nInt32BufferAttribute.prototype.constructor = Int32BufferAttribute;\n\n\nfunction Uint32BufferAttribute( array, itemSize, normalized ) {\n\n\tBufferAttribute.call( this, new Uint32Array( array ), itemSize, normalized );\n\n}\n\nUint32BufferAttribute.prototype = Object.create( BufferAttribute.prototype );\nUint32BufferAttribute.prototype.constructor = Uint32BufferAttribute;\n\nfunction Float16BufferAttribute( array, itemSize, normalized ) {\n\n\tBufferAttribute.call( this, new Uint16Array( array ), itemSize, normalized );\n\n}\n\nFloat16BufferAttribute.prototype = Object.create( BufferAttribute.prototype );\nFloat16BufferAttribute.prototype.constructor = Float16BufferAttribute;\nFloat16BufferAttribute.prototype.isFloat16BufferAttribute = true;\n\nfunction Float32BufferAttribute( array, itemSize, normalized ) {\n\n\tBufferAttribute.call( this, new Float32Array( array ), itemSize, normalized );\n\n}\n\nFloat32BufferAttribute.prototype = Object.create( BufferAttribute.prototype );\nFloat32BufferAttribute.prototype.constructor = Float32BufferAttribute;\n\n\nfunction Float64BufferAttribute( array, itemSize, normalized ) {\n\n\tBufferAttribute.call( this, new Float64Array( array ), itemSize, normalized );\n\n}\n\nFloat64BufferAttribute.prototype = Object.create( BufferAttribute.prototype );\nFloat64BufferAttribute.prototype.constructor = Float64BufferAttribute;\n\nclass DirectGeometry {\n\n\tconstructor() {\n\n\t\tthis.vertices = [];\n\t\tthis.normals = [];\n\t\tthis.colors = [];\n\t\tthis.uvs = [];\n\t\tthis.uvs2 = [];\n\n\t\tthis.groups = [];\n\n\t\tthis.morphTargets = {};\n\n\t\tthis.skinWeights = [];\n\t\tthis.skinIndices = [];\n\n\t\t// this.lineDistances = [];\n\n\t\tthis.boundingBox = null;\n\t\tthis.boundingSphere = null;\n\n\t\t// update flags\n\n\t\tthis.verticesNeedUpdate = false;\n\t\tthis.normalsNeedUpdate = false;\n\t\tthis.colorsNeedUpdate = false;\n\t\tthis.uvsNeedUpdate = false;\n\t\tthis.groupsNeedUpdate = false;\n\n\t}\n\n\tcomputeGroups( geometry ) {\n\n\t\tconst groups = [];\n\n\t\tlet group, i;\n\t\tlet materialIndex = undefined;\n\n\t\tconst faces = geometry.faces;\n\n\t\tfor ( i = 0; i < faces.length; i ++ ) {\n\n\t\t\tconst face = faces[ i ];\n\n\t\t\t// materials\n\n\t\t\tif ( face.materialIndex !== materialIndex ) {\n\n\t\t\t\tmaterialIndex = face.materialIndex;\n\n\t\t\t\tif ( group !== undefined ) {\n\n\t\t\t\t\tgroup.count = ( i * 3 ) - group.start;\n\t\t\t\t\tgroups.push( group );\n\n\t\t\t\t}\n\n\t\t\t\tgroup = {\n\t\t\t\t\tstart: i * 3,\n\t\t\t\t\tmaterialIndex: materialIndex\n\t\t\t\t};\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( group !== undefined ) {\n\n\t\t\tgroup.count = ( i * 3 ) - group.start;\n\t\t\tgroups.push( group );\n\n\t\t}\n\n\t\tthis.groups = groups;\n\n\t}\n\n\tfromGeometry( geometry ) {\n\n\t\tconst faces = geometry.faces;\n\t\tconst vertices = geometry.vertices;\n\t\tconst faceVertexUvs = geometry.faceVertexUvs;\n\n\t\tconst hasFaceVertexUv = faceVertexUvs[ 0 ] && faceVertexUvs[ 0 ].length > 0;\n\t\tconst hasFaceVertexUv2 = faceVertexUvs[ 1 ] && faceVertexUvs[ 1 ].length > 0;\n\n\t\t// morphs\n\n\t\tconst morphTargets = geometry.morphTargets;\n\t\tconst morphTargetsLength = morphTargets.length;\n\n\t\tlet morphTargetsPosition;\n\n\t\tif ( morphTargetsLength > 0 ) {\n\n\t\t\tmorphTargetsPosition = [];\n\n\t\t\tfor ( let i = 0; i < morphTargetsLength; i ++ ) {\n\n\t\t\t\tmorphTargetsPosition[ i ] = {\n\t\t\t\t\tname: morphTargets[ i ].name,\n\t\t\t\t \tdata: []\n\t\t\t\t};\n\n\t\t\t}\n\n\t\t\tthis.morphTargets.position = morphTargetsPosition;\n\n\t\t}\n\n\t\tconst morphNormals = geometry.morphNormals;\n\t\tconst morphNormalsLength = morphNormals.length;\n\n\t\tlet morphTargetsNormal;\n\n\t\tif ( morphNormalsLength > 0 ) {\n\n\t\t\tmorphTargetsNormal = [];\n\n\t\t\tfor ( let i = 0; i < morphNormalsLength; i ++ ) {\n\n\t\t\t\tmorphTargetsNormal[ i ] = {\n\t\t\t\t\tname: morphNormals[ i ].name,\n\t\t\t\t \tdata: []\n\t\t\t\t};\n\n\t\t\t}\n\n\t\t\tthis.morphTargets.normal = morphTargetsNormal;\n\n\t\t}\n\n\t\t// skins\n\n\t\tconst skinIndices = geometry.skinIndices;\n\t\tconst skinWeights = geometry.skinWeights;\n\n\t\tconst hasSkinIndices = skinIndices.length === vertices.length;\n\t\tconst hasSkinWeights = skinWeights.length === vertices.length;\n\n\t\t//\n\n\t\tif ( vertices.length > 0 && faces.length === 0 ) {\n\n\t\t\tconsole.error( 'THREE.DirectGeometry: Faceless geometries are not supported.' );\n\n\t\t}\n\n\t\tfor ( let i = 0; i < faces.length; i ++ ) {\n\n\t\t\tconst face = faces[ i ];\n\n\t\t\tthis.vertices.push( vertices[ face.a ], vertices[ face.b ], vertices[ face.c ] );\n\n\t\t\tconst vertexNormals = face.vertexNormals;\n\n\t\t\tif ( vertexNormals.length === 3 ) {\n\n\t\t\t\tthis.normals.push( vertexNormals[ 0 ], vertexNormals[ 1 ], vertexNormals[ 2 ] );\n\n\t\t\t} else {\n\n\t\t\t\tconst normal = face.normal;\n\n\t\t\t\tthis.normals.push( normal, normal, normal );\n\n\t\t\t}\n\n\t\t\tconst vertexColors = face.vertexColors;\n\n\t\t\tif ( vertexColors.length === 3 ) {\n\n\t\t\t\tthis.colors.push( vertexColors[ 0 ], vertexColors[ 1 ], vertexColors[ 2 ] );\n\n\t\t\t} else {\n\n\t\t\t\tconst color = face.color;\n\n\t\t\t\tthis.colors.push( color, color, color );\n\n\t\t\t}\n\n\t\t\tif ( hasFaceVertexUv === true ) {\n\n\t\t\t\tconst vertexUvs = faceVertexUvs[ 0 ][ i ];\n\n\t\t\t\tif ( vertexUvs !== undefined ) {\n\n\t\t\t\t\tthis.uvs.push( vertexUvs[ 0 ], vertexUvs[ 1 ], vertexUvs[ 2 ] );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.warn( 'THREE.DirectGeometry.fromGeometry(): Undefined vertexUv ', i );\n\n\t\t\t\t\tthis.uvs.push( new Vector2(), new Vector2(), new Vector2() );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( hasFaceVertexUv2 === true ) {\n\n\t\t\t\tconst vertexUvs = faceVertexUvs[ 1 ][ i ];\n\n\t\t\t\tif ( vertexUvs !== undefined ) {\n\n\t\t\t\t\tthis.uvs2.push( vertexUvs[ 0 ], vertexUvs[ 1 ], vertexUvs[ 2 ] );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.warn( 'THREE.DirectGeometry.fromGeometry(): Undefined vertexUv2 ', i );\n\n\t\t\t\t\tthis.uvs2.push( new Vector2(), new Vector2(), new Vector2() );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// morphs\n\n\t\t\tfor ( let j = 0; j < morphTargetsLength; j ++ ) {\n\n\t\t\t\tconst morphTarget = morphTargets[ j ].vertices;\n\n\t\t\t\tmorphTargetsPosition[ j ].data.push( morphTarget[ face.a ], morphTarget[ face.b ], morphTarget[ face.c ] );\n\n\t\t\t}\n\n\t\t\tfor ( let j = 0; j < morphNormalsLength; j ++ ) {\n\n\t\t\t\tconst morphNormal = morphNormals[ j ].vertexNormals[ i ];\n\n\t\t\t\tmorphTargetsNormal[ j ].data.push( morphNormal.a, morphNormal.b, morphNormal.c );\n\n\t\t\t}\n\n\t\t\t// skins\n\n\t\t\tif ( hasSkinIndices ) {\n\n\t\t\t\tthis.skinIndices.push( skinIndices[ face.a ], skinIndices[ face.b ], skinIndices[ face.c ] );\n\n\t\t\t}\n\n\t\t\tif ( hasSkinWeights ) {\n\n\t\t\t\tthis.skinWeights.push( skinWeights[ face.a ], skinWeights[ face.b ], skinWeights[ face.c ] );\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis.computeGroups( geometry );\n\n\t\tthis.verticesNeedUpdate = geometry.verticesNeedUpdate;\n\t\tthis.normalsNeedUpdate = geometry.normalsNeedUpdate;\n\t\tthis.colorsNeedUpdate = geometry.colorsNeedUpdate;\n\t\tthis.uvsNeedUpdate = geometry.uvsNeedUpdate;\n\t\tthis.groupsNeedUpdate = geometry.groupsNeedUpdate;\n\n\t\tif ( geometry.boundingSphere !== null ) {\n\n\t\t\tthis.boundingSphere = geometry.boundingSphere.clone();\n\n\t\t}\n\n\t\tif ( geometry.boundingBox !== null ) {\n\n\t\t\tthis.boundingBox = geometry.boundingBox.clone();\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n}\n\nfunction arrayMax( array ) {\n\n\tif ( array.length === 0 ) return - Infinity;\n\n\tlet max = array[ 0 ];\n\n\tfor ( let i = 1, l = array.length; i < l; ++ i ) {\n\n\t\tif ( array[ i ] > max ) max = array[ i ];\n\n\t}\n\n\treturn max;\n\n}\n\nconst TYPED_ARRAYS = {\n\tInt8Array: Int8Array,\n\tUint8Array: Uint8Array,\n\t// Workaround for IE11 pre KB2929437. See #11440\n\tUint8ClampedArray: typeof Uint8ClampedArray !== 'undefined' ? Uint8ClampedArray : Uint8Array,\n\tInt16Array: Int16Array,\n\tUint16Array: Uint16Array,\n\tInt32Array: Int32Array,\n\tUint32Array: Uint32Array,\n\tFloat32Array: Float32Array,\n\tFloat64Array: Float64Array\n};\n\nfunction getTypedArray( type, buffer ) {\n\n\treturn new TYPED_ARRAYS[ type ]( buffer );\n\n}\n\nlet _bufferGeometryId = 1; // BufferGeometry uses odd numbers as Id\n\nconst _m1$2 = new Matrix4();\nconst _obj = new Object3D();\nconst _offset = new Vector3();\nconst _box$2 = new Box3();\nconst _boxMorphTargets = new Box3();\nconst _vector$4 = new Vector3();\n\nfunction BufferGeometry() {\n\n\tObject.defineProperty( this, 'id', { value: _bufferGeometryId += 2 } );\n\n\tthis.uuid = MathUtils.generateUUID();\n\n\tthis.name = '';\n\tthis.type = 'BufferGeometry';\n\n\tthis.index = null;\n\tthis.attributes = {};\n\n\tthis.morphAttributes = {};\n\tthis.morphTargetsRelative = false;\n\n\tthis.groups = [];\n\n\tthis.boundingBox = null;\n\tthis.boundingSphere = null;\n\n\tthis.drawRange = { start: 0, count: Infinity };\n\n\tthis.userData = {};\n\n}\n\nBufferGeometry.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {\n\n\tconstructor: BufferGeometry,\n\n\tisBufferGeometry: true,\n\n\tgetIndex: function () {\n\n\t\treturn this.index;\n\n\t},\n\n\tsetIndex: function ( index ) {\n\n\t\tif ( Array.isArray( index ) ) {\n\n\t\t\tthis.index = new ( arrayMax( index ) > 65535 ? Uint32BufferAttribute : Uint16BufferAttribute )( index, 1 );\n\n\t\t} else {\n\n\t\t\tthis.index = index;\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tgetAttribute: function ( name ) {\n\n\t\treturn this.attributes[ name ];\n\n\t},\n\n\tsetAttribute: function ( name, attribute ) {\n\n\t\tthis.attributes[ name ] = attribute;\n\n\t\treturn this;\n\n\t},\n\n\tdeleteAttribute: function ( name ) {\n\n\t\tdelete this.attributes[ name ];\n\n\t\treturn this;\n\n\t},\n\n\thasAttribute: function ( name ) {\n\n\t\treturn this.attributes[ name ] !== undefined;\n\n\t},\n\n\taddGroup: function ( start, count, materialIndex = 0 ) {\n\n\t\tthis.groups.push( {\n\n\t\t\tstart: start,\n\t\t\tcount: count,\n\t\t\tmaterialIndex: materialIndex\n\n\t\t} );\n\n\t},\n\n\tclearGroups: function () {\n\n\t\tthis.groups = [];\n\n\t},\n\n\tsetDrawRange: function ( start, count ) {\n\n\t\tthis.drawRange.start = start;\n\t\tthis.drawRange.count = count;\n\n\t},\n\n\tapplyMatrix4: function ( matrix ) {\n\n\t\tconst position = this.attributes.position;\n\n\t\tif ( position !== undefined ) {\n\n\t\t\tposition.applyMatrix4( matrix );\n\n\t\t\tposition.needsUpdate = true;\n\n\t\t}\n\n\t\tconst normal = this.attributes.normal;\n\n\t\tif ( normal !== undefined ) {\n\n\t\t\tconst normalMatrix = new Matrix3().getNormalMatrix( matrix );\n\n\t\t\tnormal.applyNormalMatrix( normalMatrix );\n\n\t\t\tnormal.needsUpdate = true;\n\n\t\t}\n\n\t\tconst tangent = this.attributes.tangent;\n\n\t\tif ( tangent !== undefined ) {\n\n\t\t\ttangent.transformDirection( matrix );\n\n\t\t\ttangent.needsUpdate = true;\n\n\t\t}\n\n\t\tif ( this.boundingBox !== null ) {\n\n\t\t\tthis.computeBoundingBox();\n\n\t\t}\n\n\t\tif ( this.boundingSphere !== null ) {\n\n\t\t\tthis.computeBoundingSphere();\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\trotateX: function ( angle ) {\n\n\t\t// rotate geometry around world x-axis\n\n\t\t_m1$2.makeRotationX( angle );\n\n\t\tthis.applyMatrix4( _m1$2 );\n\n\t\treturn this;\n\n\t},\n\n\trotateY: function ( angle ) {\n\n\t\t// rotate geometry around world y-axis\n\n\t\t_m1$2.makeRotationY( angle );\n\n\t\tthis.applyMatrix4( _m1$2 );\n\n\t\treturn this;\n\n\t},\n\n\trotateZ: function ( angle ) {\n\n\t\t// rotate geometry around world z-axis\n\n\t\t_m1$2.makeRotationZ( angle );\n\n\t\tthis.applyMatrix4( _m1$2 );\n\n\t\treturn this;\n\n\t},\n\n\ttranslate: function ( x, y, z ) {\n\n\t\t// translate geometry\n\n\t\t_m1$2.makeTranslation( x, y, z );\n\n\t\tthis.applyMatrix4( _m1$2 );\n\n\t\treturn this;\n\n\t},\n\n\tscale: function ( x, y, z ) {\n\n\t\t// scale geometry\n\n\t\t_m1$2.makeScale( x, y, z );\n\n\t\tthis.applyMatrix4( _m1$2 );\n\n\t\treturn this;\n\n\t},\n\n\tlookAt: function ( vector ) {\n\n\t\t_obj.lookAt( vector );\n\n\t\t_obj.updateMatrix();\n\n\t\tthis.applyMatrix4( _obj.matrix );\n\n\t\treturn this;\n\n\t},\n\n\tcenter: function () {\n\n\t\tthis.computeBoundingBox();\n\n\t\tthis.boundingBox.getCenter( _offset ).negate();\n\n\t\tthis.translate( _offset.x, _offset.y, _offset.z );\n\n\t\treturn this;\n\n\t},\n\n\tsetFromObject: function ( object ) {\n\n\t\t// console.log( 'THREE.BufferGeometry.setFromObject(). Converting', object, this );\n\n\t\tconst geometry = object.geometry;\n\n\t\tif ( object.isPoints || object.isLine ) {\n\n\t\t\tconst positions = new Float32BufferAttribute( geometry.vertices.length * 3, 3 );\n\t\t\tconst colors = new Float32BufferAttribute( geometry.colors.length * 3, 3 );\n\n\t\t\tthis.setAttribute( 'position', positions.copyVector3sArray( geometry.vertices ) );\n\t\t\tthis.setAttribute( 'color', colors.copyColorsArray( geometry.colors ) );\n\n\t\t\tif ( geometry.lineDistances && geometry.lineDistances.length === geometry.vertices.length ) {\n\n\t\t\t\tconst lineDistances = new Float32BufferAttribute( geometry.lineDistances.length, 1 );\n\n\t\t\t\tthis.setAttribute( 'lineDistance', lineDistances.copyArray( geometry.lineDistances ) );\n\n\t\t\t}\n\n\t\t\tif ( geometry.boundingSphere !== null ) {\n\n\t\t\t\tthis.boundingSphere = geometry.boundingSphere.clone();\n\n\t\t\t}\n\n\t\t\tif ( geometry.boundingBox !== null ) {\n\n\t\t\t\tthis.boundingBox = geometry.boundingBox.clone();\n\n\t\t\t}\n\n\t\t} else if ( object.isMesh ) {\n\n\t\t\tif ( geometry && geometry.isGeometry ) {\n\n\t\t\t\tthis.fromGeometry( geometry );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tsetFromPoints: function ( points ) {\n\n\t\tconst position = [];\n\n\t\tfor ( let i = 0, l = points.length; i < l; i ++ ) {\n\n\t\t\tconst point = points[ i ];\n\t\t\tposition.push( point.x, point.y, point.z || 0 );\n\n\t\t}\n\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( position, 3 ) );\n\n\t\treturn this;\n\n\t},\n\n\tupdateFromObject: function ( object ) {\n\n\t\tlet geometry = object.geometry;\n\n\t\tif ( object.isMesh ) {\n\n\t\t\tlet direct = geometry.__directGeometry;\n\n\t\t\tif ( geometry.elementsNeedUpdate === true ) {\n\n\t\t\t\tdirect = undefined;\n\t\t\t\tgeometry.elementsNeedUpdate = false;\n\n\t\t\t}\n\n\t\t\tif ( direct === undefined ) {\n\n\t\t\t\treturn this.fromGeometry( geometry );\n\n\t\t\t}\n\n\t\t\tdirect.verticesNeedUpdate = geometry.verticesNeedUpdate;\n\t\t\tdirect.normalsNeedUpdate = geometry.normalsNeedUpdate;\n\t\t\tdirect.colorsNeedUpdate = geometry.colorsNeedUpdate;\n\t\t\tdirect.uvsNeedUpdate = geometry.uvsNeedUpdate;\n\t\t\tdirect.groupsNeedUpdate = geometry.groupsNeedUpdate;\n\n\t\t\tgeometry.verticesNeedUpdate = false;\n\t\t\tgeometry.normalsNeedUpdate = false;\n\t\t\tgeometry.colorsNeedUpdate = false;\n\t\t\tgeometry.uvsNeedUpdate = false;\n\t\t\tgeometry.groupsNeedUpdate = false;\n\n\t\t\tgeometry = direct;\n\n\t\t}\n\n\t\tif ( geometry.verticesNeedUpdate === true ) {\n\n\t\t\tconst attribute = this.attributes.position;\n\n\t\t\tif ( attribute !== undefined ) {\n\n\t\t\t\tattribute.copyVector3sArray( geometry.vertices );\n\t\t\t\tattribute.needsUpdate = true;\n\n\t\t\t}\n\n\t\t\tgeometry.verticesNeedUpdate = false;\n\n\t\t}\n\n\t\tif ( geometry.normalsNeedUpdate === true ) {\n\n\t\t\tconst attribute = this.attributes.normal;\n\n\t\t\tif ( attribute !== undefined ) {\n\n\t\t\t\tattribute.copyVector3sArray( geometry.normals );\n\t\t\t\tattribute.needsUpdate = true;\n\n\t\t\t}\n\n\t\t\tgeometry.normalsNeedUpdate = false;\n\n\t\t}\n\n\t\tif ( geometry.colorsNeedUpdate === true ) {\n\n\t\t\tconst attribute = this.attributes.color;\n\n\t\t\tif ( attribute !== undefined ) {\n\n\t\t\t\tattribute.copyColorsArray( geometry.colors );\n\t\t\t\tattribute.needsUpdate = true;\n\n\t\t\t}\n\n\t\t\tgeometry.colorsNeedUpdate = false;\n\n\t\t}\n\n\t\tif ( geometry.uvsNeedUpdate ) {\n\n\t\t\tconst attribute = this.attributes.uv;\n\n\t\t\tif ( attribute !== undefined ) {\n\n\t\t\t\tattribute.copyVector2sArray( geometry.uvs );\n\t\t\t\tattribute.needsUpdate = true;\n\n\t\t\t}\n\n\t\t\tgeometry.uvsNeedUpdate = false;\n\n\t\t}\n\n\t\tif ( geometry.lineDistancesNeedUpdate ) {\n\n\t\t\tconst attribute = this.attributes.lineDistance;\n\n\t\t\tif ( attribute !== undefined ) {\n\n\t\t\t\tattribute.copyArray( geometry.lineDistances );\n\t\t\t\tattribute.needsUpdate = true;\n\n\t\t\t}\n\n\t\t\tgeometry.lineDistancesNeedUpdate = false;\n\n\t\t}\n\n\t\tif ( geometry.groupsNeedUpdate ) {\n\n\t\t\tgeometry.computeGroups( object.geometry );\n\t\t\tthis.groups = geometry.groups;\n\n\t\t\tgeometry.groupsNeedUpdate = false;\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tfromGeometry: function ( geometry ) {\n\n\t\tgeometry.__directGeometry = new DirectGeometry().fromGeometry( geometry );\n\n\t\treturn this.fromDirectGeometry( geometry.__directGeometry );\n\n\t},\n\n\tfromDirectGeometry: function ( geometry ) {\n\n\t\tconst positions = new Float32Array( geometry.vertices.length * 3 );\n\t\tthis.setAttribute( 'position', new BufferAttribute( positions, 3 ).copyVector3sArray( geometry.vertices ) );\n\n\t\tif ( geometry.normals.length > 0 ) {\n\n\t\t\tconst normals = new Float32Array( geometry.normals.length * 3 );\n\t\t\tthis.setAttribute( 'normal', new BufferAttribute( normals, 3 ).copyVector3sArray( geometry.normals ) );\n\n\t\t}\n\n\t\tif ( geometry.colors.length > 0 ) {\n\n\t\t\tconst colors = new Float32Array( geometry.colors.length * 3 );\n\t\t\tthis.setAttribute( 'color', new BufferAttribute( colors, 3 ).copyColorsArray( geometry.colors ) );\n\n\t\t}\n\n\t\tif ( geometry.uvs.length > 0 ) {\n\n\t\t\tconst uvs = new Float32Array( geometry.uvs.length * 2 );\n\t\t\tthis.setAttribute( 'uv', new BufferAttribute( uvs, 2 ).copyVector2sArray( geometry.uvs ) );\n\n\t\t}\n\n\t\tif ( geometry.uvs2.length > 0 ) {\n\n\t\t\tconst uvs2 = new Float32Array( geometry.uvs2.length * 2 );\n\t\t\tthis.setAttribute( 'uv2', new BufferAttribute( uvs2, 2 ).copyVector2sArray( geometry.uvs2 ) );\n\n\t\t}\n\n\t\t// groups\n\n\t\tthis.groups = geometry.groups;\n\n\t\t// morphs\n\n\t\tfor ( const name in geometry.morphTargets ) {\n\n\t\t\tconst array = [];\n\t\t\tconst morphTargets = geometry.morphTargets[ name ];\n\n\t\t\tfor ( let i = 0, l = morphTargets.length; i < l; i ++ ) {\n\n\t\t\t\tconst morphTarget = morphTargets[ i ];\n\n\t\t\t\tconst attribute = new Float32BufferAttribute( morphTarget.data.length * 3, 3 );\n\t\t\t\tattribute.name = morphTarget.name;\n\n\t\t\t\tarray.push( attribute.copyVector3sArray( morphTarget.data ) );\n\n\t\t\t}\n\n\t\t\tthis.morphAttributes[ name ] = array;\n\n\t\t}\n\n\t\t// skinning\n\n\t\tif ( geometry.skinIndices.length > 0 ) {\n\n\t\t\tconst skinIndices = new Float32BufferAttribute( geometry.skinIndices.length * 4, 4 );\n\t\t\tthis.setAttribute( 'skinIndex', skinIndices.copyVector4sArray( geometry.skinIndices ) );\n\n\t\t}\n\n\t\tif ( geometry.skinWeights.length > 0 ) {\n\n\t\t\tconst skinWeights = new Float32BufferAttribute( geometry.skinWeights.length * 4, 4 );\n\t\t\tthis.setAttribute( 'skinWeight', skinWeights.copyVector4sArray( geometry.skinWeights ) );\n\n\t\t}\n\n\t\t//\n\n\t\tif ( geometry.boundingSphere !== null ) {\n\n\t\t\tthis.boundingSphere = geometry.boundingSphere.clone();\n\n\t\t}\n\n\t\tif ( geometry.boundingBox !== null ) {\n\n\t\t\tthis.boundingBox = geometry.boundingBox.clone();\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tcomputeBoundingBox: function () {\n\n\t\tif ( this.boundingBox === null ) {\n\n\t\t\tthis.boundingBox = new Box3();\n\n\t\t}\n\n\t\tconst position = this.attributes.position;\n\t\tconst morphAttributesPosition = this.morphAttributes.position;\n\n\t\tif ( position && position.isGLBufferAttribute ) {\n\n\t\t\tconsole.error( 'THREE.BufferGeometry.computeBoundingBox(): GLBufferAttribute requires a manual bounding box. Alternatively set \"mesh.frustumCulled\" to \"false\".', this );\n\n\t\t\tthis.boundingBox.set(\n\t\t\t\tnew Vector3( - Infinity, - Infinity, - Infinity ),\n\t\t\t\tnew Vector3( + Infinity, + Infinity, + Infinity )\n\t\t\t);\n\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( position !== undefined ) {\n\n\t\t\tthis.boundingBox.setFromBufferAttribute( position );\n\n\t\t\t// process morph attributes if present\n\n\t\t\tif ( morphAttributesPosition ) {\n\n\t\t\t\tfor ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst morphAttribute = morphAttributesPosition[ i ];\n\t\t\t\t\t_box$2.setFromBufferAttribute( morphAttribute );\n\n\t\t\t\t\tif ( this.morphTargetsRelative ) {\n\n\t\t\t\t\t\t_vector$4.addVectors( this.boundingBox.min, _box$2.min );\n\t\t\t\t\t\tthis.boundingBox.expandByPoint( _vector$4 );\n\n\t\t\t\t\t\t_vector$4.addVectors( this.boundingBox.max, _box$2.max );\n\t\t\t\t\t\tthis.boundingBox.expandByPoint( _vector$4 );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tthis.boundingBox.expandByPoint( _box$2.min );\n\t\t\t\t\t\tthis.boundingBox.expandByPoint( _box$2.max );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tthis.boundingBox.makeEmpty();\n\n\t\t}\n\n\t\tif ( isNaN( this.boundingBox.min.x ) || isNaN( this.boundingBox.min.y ) || isNaN( this.boundingBox.min.z ) ) {\n\n\t\t\tconsole.error( 'THREE.BufferGeometry.computeBoundingBox(): Computed min/max have NaN values. The \"position\" attribute is likely to have NaN values.', this );\n\n\t\t}\n\n\t},\n\n\tcomputeBoundingSphere: function () {\n\n\t\tif ( this.boundingSphere === null ) {\n\n\t\t\tthis.boundingSphere = new Sphere();\n\n\t\t}\n\n\t\tconst position = this.attributes.position;\n\t\tconst morphAttributesPosition = this.morphAttributes.position;\n\n\t\tif ( position && position.isGLBufferAttribute ) {\n\n\t\t\tconsole.error( 'THREE.BufferGeometry.computeBoundingSphere(): GLBufferAttribute requires a manual bounding sphere. Alternatively set \"mesh.frustumCulled\" to \"false\".', this );\n\n\t\t\tthis.boundingSphere.set( new Vector3(), Infinity );\n\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( position ) {\n\n\t\t\t// first, find the center of the bounding sphere\n\n\t\t\tconst center = this.boundingSphere.center;\n\n\t\t\t_box$2.setFromBufferAttribute( position );\n\n\t\t\t// process morph attributes if present\n\n\t\t\tif ( morphAttributesPosition ) {\n\n\t\t\t\tfor ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst morphAttribute = morphAttributesPosition[ i ];\n\t\t\t\t\t_boxMorphTargets.setFromBufferAttribute( morphAttribute );\n\n\t\t\t\t\tif ( this.morphTargetsRelative ) {\n\n\t\t\t\t\t\t_vector$4.addVectors( _box$2.min, _boxMorphTargets.min );\n\t\t\t\t\t\t_box$2.expandByPoint( _vector$4 );\n\n\t\t\t\t\t\t_vector$4.addVectors( _box$2.max, _boxMorphTargets.max );\n\t\t\t\t\t\t_box$2.expandByPoint( _vector$4 );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\t_box$2.expandByPoint( _boxMorphTargets.min );\n\t\t\t\t\t\t_box$2.expandByPoint( _boxMorphTargets.max );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t_box$2.getCenter( center );\n\n\t\t\t// second, try to find a boundingSphere with a radius smaller than the\n\t\t\t// boundingSphere of the boundingBox: sqrt(3) smaller in the best case\n\n\t\t\tlet maxRadiusSq = 0;\n\n\t\t\tfor ( let i = 0, il = position.count; i < il; i ++ ) {\n\n\t\t\t\t_vector$4.fromBufferAttribute( position, i );\n\n\t\t\t\tmaxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( _vector$4 ) );\n\n\t\t\t}\n\n\t\t\t// process morph attributes if present\n\n\t\t\tif ( morphAttributesPosition ) {\n\n\t\t\t\tfor ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst morphAttribute = morphAttributesPosition[ i ];\n\t\t\t\t\tconst morphTargetsRelative = this.morphTargetsRelative;\n\n\t\t\t\t\tfor ( let j = 0, jl = morphAttribute.count; j < jl; j ++ ) {\n\n\t\t\t\t\t\t_vector$4.fromBufferAttribute( morphAttribute, j );\n\n\t\t\t\t\t\tif ( morphTargetsRelative ) {\n\n\t\t\t\t\t\t\t_offset.fromBufferAttribute( position, j );\n\t\t\t\t\t\t\t_vector$4.add( _offset );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tmaxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( _vector$4 ) );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tthis.boundingSphere.radius = Math.sqrt( maxRadiusSq );\n\n\t\t\tif ( isNaN( this.boundingSphere.radius ) ) {\n\n\t\t\t\tconsole.error( 'THREE.BufferGeometry.computeBoundingSphere(): Computed radius is NaN. The \"position\" attribute is likely to have NaN values.', this );\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\tcomputeFaceNormals: function () {\n\n\t\t// backwards compatibility\n\n\t},\n\n\tcomputeVertexNormals: function () {\n\n\t\tconst index = this.index;\n\t\tconst positionAttribute = this.getAttribute( 'position' );\n\n\t\tif ( positionAttribute !== undefined ) {\n\n\t\t\tlet normalAttribute = this.getAttribute( 'normal' );\n\n\t\t\tif ( normalAttribute === undefined ) {\n\n\t\t\t\tnormalAttribute = new BufferAttribute( new Float32Array( positionAttribute.count * 3 ), 3 );\n\t\t\t\tthis.setAttribute( 'normal', normalAttribute );\n\n\t\t\t} else {\n\n\t\t\t\t// reset existing normals to zero\n\n\t\t\t\tfor ( let i = 0, il = normalAttribute.count; i < il; i ++ ) {\n\n\t\t\t\t\tnormalAttribute.setXYZ( i, 0, 0, 0 );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tconst pA = new Vector3(), pB = new Vector3(), pC = new Vector3();\n\t\t\tconst nA = new Vector3(), nB = new Vector3(), nC = new Vector3();\n\t\t\tconst cb = new Vector3(), ab = new Vector3();\n\n\t\t\t// indexed elements\n\n\t\t\tif ( index ) {\n\n\t\t\t\tfor ( let i = 0, il = index.count; i < il; i += 3 ) {\n\n\t\t\t\t\tconst vA = index.getX( i + 0 );\n\t\t\t\t\tconst vB = index.getX( i + 1 );\n\t\t\t\t\tconst vC = index.getX( i + 2 );\n\n\t\t\t\t\tpA.fromBufferAttribute( positionAttribute, vA );\n\t\t\t\t\tpB.fromBufferAttribute( positionAttribute, vB );\n\t\t\t\t\tpC.fromBufferAttribute( positionAttribute, vC );\n\n\t\t\t\t\tcb.subVectors( pC, pB );\n\t\t\t\t\tab.subVectors( pA, pB );\n\t\t\t\t\tcb.cross( ab );\n\n\t\t\t\t\tnA.fromBufferAttribute( normalAttribute, vA );\n\t\t\t\t\tnB.fromBufferAttribute( normalAttribute, vB );\n\t\t\t\t\tnC.fromBufferAttribute( normalAttribute, vC );\n\n\t\t\t\t\tnA.add( cb );\n\t\t\t\t\tnB.add( cb );\n\t\t\t\t\tnC.add( cb );\n\n\t\t\t\t\tnormalAttribute.setXYZ( vA, nA.x, nA.y, nA.z );\n\t\t\t\t\tnormalAttribute.setXYZ( vB, nB.x, nB.y, nB.z );\n\t\t\t\t\tnormalAttribute.setXYZ( vC, nC.x, nC.y, nC.z );\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\t// non-indexed elements (unconnected triangle soup)\n\n\t\t\t\tfor ( let i = 0, il = positionAttribute.count; i < il; i += 3 ) {\n\n\t\t\t\t\tpA.fromBufferAttribute( positionAttribute, i + 0 );\n\t\t\t\t\tpB.fromBufferAttribute( positionAttribute, i + 1 );\n\t\t\t\t\tpC.fromBufferAttribute( positionAttribute, i + 2 );\n\n\t\t\t\t\tcb.subVectors( pC, pB );\n\t\t\t\t\tab.subVectors( pA, pB );\n\t\t\t\t\tcb.cross( ab );\n\n\t\t\t\t\tnormalAttribute.setXYZ( i + 0, cb.x, cb.y, cb.z );\n\t\t\t\t\tnormalAttribute.setXYZ( i + 1, cb.x, cb.y, cb.z );\n\t\t\t\t\tnormalAttribute.setXYZ( i + 2, cb.x, cb.y, cb.z );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tthis.normalizeNormals();\n\n\t\t\tnormalAttribute.needsUpdate = true;\n\n\t\t}\n\n\t},\n\n\tmerge: function ( geometry, offset ) {\n\n\t\tif ( ! ( geometry && geometry.isBufferGeometry ) ) {\n\n\t\t\tconsole.error( 'THREE.BufferGeometry.merge(): geometry not an instance of THREE.BufferGeometry.', geometry );\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( offset === undefined ) {\n\n\t\t\toffset = 0;\n\n\t\t\tconsole.warn(\n\t\t\t\t'THREE.BufferGeometry.merge(): Overwriting original geometry, starting at offset=0. '\n\t\t\t\t+ 'Use BufferGeometryUtils.mergeBufferGeometries() for lossless merge.'\n\t\t\t);\n\n\t\t}\n\n\t\tconst attributes = this.attributes;\n\n\t\tfor ( const key in attributes ) {\n\n\t\t\tif ( geometry.attributes[ key ] === undefined ) continue;\n\n\t\t\tconst attribute1 = attributes[ key ];\n\t\t\tconst attributeArray1 = attribute1.array;\n\n\t\t\tconst attribute2 = geometry.attributes[ key ];\n\t\t\tconst attributeArray2 = attribute2.array;\n\n\t\t\tconst attributeOffset = attribute2.itemSize * offset;\n\t\t\tconst length = Math.min( attributeArray2.length, attributeArray1.length - attributeOffset );\n\n\t\t\tfor ( let i = 0, j = attributeOffset; i < length; i ++, j ++ ) {\n\n\t\t\t\tattributeArray1[ j ] = attributeArray2[ i ];\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tnormalizeNormals: function () {\n\n\t\tconst normals = this.attributes.normal;\n\n\t\tfor ( let i = 0, il = normals.count; i < il; i ++ ) {\n\n\t\t\t_vector$4.fromBufferAttribute( normals, i );\n\n\t\t\t_vector$4.normalize();\n\n\t\t\tnormals.setXYZ( i, _vector$4.x, _vector$4.y, _vector$4.z );\n\n\t\t}\n\n\t},\n\n\ttoNonIndexed: function () {\n\n\t\tfunction convertBufferAttribute( attribute, indices ) {\n\n\t\t\tconst array = attribute.array;\n\t\t\tconst itemSize = attribute.itemSize;\n\t\t\tconst normalized = attribute.normalized;\n\n\t\t\tconst array2 = new array.constructor( indices.length * itemSize );\n\n\t\t\tlet index = 0, index2 = 0;\n\n\t\t\tfor ( let i = 0, l = indices.length; i < l; i ++ ) {\n\n\t\t\t\tindex = indices[ i ] * itemSize;\n\n\t\t\t\tfor ( let j = 0; j < itemSize; j ++ ) {\n\n\t\t\t\t\tarray2[ index2 ++ ] = array[ index ++ ];\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\treturn new BufferAttribute( array2, itemSize, normalized );\n\n\t\t}\n\n\t\t//\n\n\t\tif ( this.index === null ) {\n\n\t\t\tconsole.warn( 'THREE.BufferGeometry.toNonIndexed(): Geometry is already non-indexed.' );\n\t\t\treturn this;\n\n\t\t}\n\n\t\tconst geometry2 = new BufferGeometry();\n\n\t\tconst indices = this.index.array;\n\t\tconst attributes = this.attributes;\n\n\t\t// attributes\n\n\t\tfor ( const name in attributes ) {\n\n\t\t\tconst attribute = attributes[ name ];\n\n\t\t\tconst newAttribute = convertBufferAttribute( attribute, indices );\n\n\t\t\tgeometry2.setAttribute( name, newAttribute );\n\n\t\t}\n\n\t\t// morph attributes\n\n\t\tconst morphAttributes = this.morphAttributes;\n\n\t\tfor ( const name in morphAttributes ) {\n\n\t\t\tconst morphArray = [];\n\t\t\tconst morphAttribute = morphAttributes[ name ]; // morphAttribute: array of Float32BufferAttributes\n\n\t\t\tfor ( let i = 0, il = morphAttribute.length; i < il; i ++ ) {\n\n\t\t\t\tconst attribute = morphAttribute[ i ];\n\n\t\t\t\tconst newAttribute = convertBufferAttribute( attribute, indices );\n\n\t\t\t\tmorphArray.push( newAttribute );\n\n\t\t\t}\n\n\t\t\tgeometry2.morphAttributes[ name ] = morphArray;\n\n\t\t}\n\n\t\tgeometry2.morphTargetsRelative = this.morphTargetsRelative;\n\n\t\t// groups\n\n\t\tconst groups = this.groups;\n\n\t\tfor ( let i = 0, l = groups.length; i < l; i ++ ) {\n\n\t\t\tconst group = groups[ i ];\n\t\t\tgeometry2.addGroup( group.start, group.count, group.materialIndex );\n\n\t\t}\n\n\t\treturn geometry2;\n\n\t},\n\n\ttoJSON: function () {\n\n\t\tconst data = {\n\t\t\tmetadata: {\n\t\t\t\tversion: 4.5,\n\t\t\t\ttype: 'BufferGeometry',\n\t\t\t\tgenerator: 'BufferGeometry.toJSON'\n\t\t\t}\n\t\t};\n\n\t\t// standard BufferGeometry serialization\n\n\t\tdata.uuid = this.uuid;\n\t\tdata.type = this.type;\n\t\tif ( this.name !== '' ) data.name = this.name;\n\t\tif ( Object.keys( this.userData ).length > 0 ) data.userData = this.userData;\n\n\t\tif ( this.parameters !== undefined ) {\n\n\t\t\tconst parameters = this.parameters;\n\n\t\t\tfor ( const key in parameters ) {\n\n\t\t\t\tif ( parameters[ key ] !== undefined ) data[ key ] = parameters[ key ];\n\n\t\t\t}\n\n\t\t\treturn data;\n\n\t\t}\n\n\t\tdata.data = { attributes: {} };\n\n\t\tconst index = this.index;\n\n\t\tif ( index !== null ) {\n\n\t\t\tdata.data.index = {\n\t\t\t\ttype: index.array.constructor.name,\n\t\t\t\tarray: Array.prototype.slice.call( index.array )\n\t\t\t};\n\n\t\t}\n\n\t\tconst attributes = this.attributes;\n\n\t\tfor ( const key in attributes ) {\n\n\t\t\tconst attribute = attributes[ key ];\n\n\t\t\tconst attributeData = attribute.toJSON( data.data );\n\n\t\t\tif ( attribute.name !== '' ) attributeData.name = attribute.name;\n\n\t\t\tdata.data.attributes[ key ] = attributeData;\n\n\t\t}\n\n\t\tconst morphAttributes = {};\n\t\tlet hasMorphAttributes = false;\n\n\t\tfor ( const key in this.morphAttributes ) {\n\n\t\t\tconst attributeArray = this.morphAttributes[ key ];\n\n\t\t\tconst array = [];\n\n\t\t\tfor ( let i = 0, il = attributeArray.length; i < il; i ++ ) {\n\n\t\t\t\tconst attribute = attributeArray[ i ];\n\n\t\t\t\tconst attributeData = attribute.toJSON( data.data );\n\n\t\t\t\tif ( attribute.name !== '' ) attributeData.name = attribute.name;\n\n\t\t\t\tarray.push( attributeData );\n\n\t\t\t}\n\n\t\t\tif ( array.length > 0 ) {\n\n\t\t\t\tmorphAttributes[ key ] = array;\n\n\t\t\t\thasMorphAttributes = true;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( hasMorphAttributes ) {\n\n\t\t\tdata.data.morphAttributes = morphAttributes;\n\t\t\tdata.data.morphTargetsRelative = this.morphTargetsRelative;\n\n\t\t}\n\n\t\tconst groups = this.groups;\n\n\t\tif ( groups.length > 0 ) {\n\n\t\t\tdata.data.groups = JSON.parse( JSON.stringify( groups ) );\n\n\t\t}\n\n\t\tconst boundingSphere = this.boundingSphere;\n\n\t\tif ( boundingSphere !== null ) {\n\n\t\t\tdata.data.boundingSphere = {\n\t\t\t\tcenter: boundingSphere.center.toArray(),\n\t\t\t\tradius: boundingSphere.radius\n\t\t\t};\n\n\t\t}\n\n\t\treturn data;\n\n\t},\n\n\tclone: function () {\n\n\t\t/*\n\t\t // Handle primitives\n\n\t\t const parameters = this.parameters;\n\n\t\t if ( parameters !== undefined ) {\n\n\t\t const values = [];\n\n\t\t for ( const key in parameters ) {\n\n\t\t values.push( parameters[ key ] );\n\n\t\t }\n\n\t\t const geometry = Object.create( this.constructor.prototype );\n\t\t this.constructor.apply( geometry, values );\n\t\t return geometry;\n\n\t\t }\n\n\t\t return new this.constructor().copy( this );\n\t\t */\n\n\t\treturn new BufferGeometry().copy( this );\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\t// reset\n\n\t\tthis.index = null;\n\t\tthis.attributes = {};\n\t\tthis.morphAttributes = {};\n\t\tthis.groups = [];\n\t\tthis.boundingBox = null;\n\t\tthis.boundingSphere = null;\n\n\t\t// used for storing cloned, shared data\n\n\t\tconst data = {};\n\n\t\t// name\n\n\t\tthis.name = source.name;\n\n\t\t// index\n\n\t\tconst index = source.index;\n\n\t\tif ( index !== null ) {\n\n\t\t\tthis.setIndex( index.clone( data ) );\n\n\t\t}\n\n\t\t// attributes\n\n\t\tconst attributes = source.attributes;\n\n\t\tfor ( const name in attributes ) {\n\n\t\t\tconst attribute = attributes[ name ];\n\t\t\tthis.setAttribute( name, attribute.clone( data ) );\n\n\t\t}\n\n\t\t// morph attributes\n\n\t\tconst morphAttributes = source.morphAttributes;\n\n\t\tfor ( const name in morphAttributes ) {\n\n\t\t\tconst array = [];\n\t\t\tconst morphAttribute = morphAttributes[ name ]; // morphAttribute: array of Float32BufferAttributes\n\n\t\t\tfor ( let i = 0, l = morphAttribute.length; i < l; i ++ ) {\n\n\t\t\t\tarray.push( morphAttribute[ i ].clone( data ) );\n\n\t\t\t}\n\n\t\t\tthis.morphAttributes[ name ] = array;\n\n\t\t}\n\n\t\tthis.morphTargetsRelative = source.morphTargetsRelative;\n\n\t\t// groups\n\n\t\tconst groups = source.groups;\n\n\t\tfor ( let i = 0, l = groups.length; i < l; i ++ ) {\n\n\t\t\tconst group = groups[ i ];\n\t\t\tthis.addGroup( group.start, group.count, group.materialIndex );\n\n\t\t}\n\n\t\t// bounding box\n\n\t\tconst boundingBox = source.boundingBox;\n\n\t\tif ( boundingBox !== null ) {\n\n\t\t\tthis.boundingBox = boundingBox.clone();\n\n\t\t}\n\n\t\t// bounding sphere\n\n\t\tconst boundingSphere = source.boundingSphere;\n\n\t\tif ( boundingSphere !== null ) {\n\n\t\t\tthis.boundingSphere = boundingSphere.clone();\n\n\t\t}\n\n\t\t// draw range\n\n\t\tthis.drawRange.start = source.drawRange.start;\n\t\tthis.drawRange.count = source.drawRange.count;\n\n\t\t// user data\n\n\t\tthis.userData = source.userData;\n\n\t\treturn this;\n\n\t},\n\n\tdispose: function () {\n\n\t\tthis.dispatchEvent( { type: 'dispose' } );\n\n\t}\n\n} );\n\nconst _inverseMatrix = new Matrix4();\nconst _ray = new Ray();\nconst _sphere = new Sphere();\n\nconst _vA = new Vector3();\nconst _vB = new Vector3();\nconst _vC = new Vector3();\n\nconst _tempA = new Vector3();\nconst _tempB = new Vector3();\nconst _tempC = new Vector3();\n\nconst _morphA = new Vector3();\nconst _morphB = new Vector3();\nconst _morphC = new Vector3();\n\nconst _uvA = new Vector2();\nconst _uvB = new Vector2();\nconst _uvC = new Vector2();\n\nconst _intersectionPoint = new Vector3();\nconst _intersectionPointWorld = new Vector3();\n\nfunction Mesh( geometry = new BufferGeometry(), material = new MeshBasicMaterial() ) {\n\n\tObject3D.call( this );\n\n\tthis.type = 'Mesh';\n\n\tthis.geometry = geometry;\n\tthis.material = material;\n\n\tthis.updateMorphTargets();\n\n}\n\nMesh.prototype = Object.assign( Object.create( Object3D.prototype ), {\n\n\tconstructor: Mesh,\n\n\tisMesh: true,\n\n\tcopy: function ( source ) {\n\n\t\tObject3D.prototype.copy.call( this, source );\n\n\t\tif ( source.morphTargetInfluences !== undefined ) {\n\n\t\t\tthis.morphTargetInfluences = source.morphTargetInfluences.slice();\n\n\t\t}\n\n\t\tif ( source.morphTargetDictionary !== undefined ) {\n\n\t\t\tthis.morphTargetDictionary = Object.assign( {}, source.morphTargetDictionary );\n\n\t\t}\n\n\t\tthis.material = source.material;\n\t\tthis.geometry = source.geometry;\n\n\t\treturn this;\n\n\t},\n\n\tupdateMorphTargets: function () {\n\n\t\tconst geometry = this.geometry;\n\n\t\tif ( geometry.isBufferGeometry ) {\n\n\t\t\tconst morphAttributes = geometry.morphAttributes;\n\t\t\tconst keys = Object.keys( morphAttributes );\n\n\t\t\tif ( keys.length > 0 ) {\n\n\t\t\t\tconst morphAttribute = morphAttributes[ keys[ 0 ] ];\n\n\t\t\t\tif ( morphAttribute !== undefined ) {\n\n\t\t\t\t\tthis.morphTargetInfluences = [];\n\t\t\t\t\tthis.morphTargetDictionary = {};\n\n\t\t\t\t\tfor ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {\n\n\t\t\t\t\t\tconst name = morphAttribute[ m ].name || String( m );\n\n\t\t\t\t\t\tthis.morphTargetInfluences.push( 0 );\n\t\t\t\t\t\tthis.morphTargetDictionary[ name ] = m;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tconst morphTargets = geometry.morphTargets;\n\n\t\t\tif ( morphTargets !== undefined && morphTargets.length > 0 ) {\n\n\t\t\t\tconsole.error( 'THREE.Mesh.updateMorphTargets() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.' );\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\traycast: function ( raycaster, intersects ) {\n\n\t\tconst geometry = this.geometry;\n\t\tconst material = this.material;\n\t\tconst matrixWorld = this.matrixWorld;\n\n\t\tif ( material === undefined ) return;\n\n\t\t// Checking boundingSphere distance to ray\n\n\t\tif ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();\n\n\t\t_sphere.copy( geometry.boundingSphere );\n\t\t_sphere.applyMatrix4( matrixWorld );\n\n\t\tif ( raycaster.ray.intersectsSphere( _sphere ) === false ) return;\n\n\t\t//\n\n\t\t_inverseMatrix.copy( matrixWorld ).invert();\n\t\t_ray.copy( raycaster.ray ).applyMatrix4( _inverseMatrix );\n\n\t\t// Check boundingBox before continuing\n\n\t\tif ( geometry.boundingBox !== null ) {\n\n\t\t\tif ( _ray.intersectsBox( geometry.boundingBox ) === false ) return;\n\n\t\t}\n\n\t\tlet intersection;\n\n\t\tif ( geometry.isBufferGeometry ) {\n\n\t\t\tconst index = geometry.index;\n\t\t\tconst position = geometry.attributes.position;\n\t\t\tconst morphPosition = geometry.morphAttributes.position;\n\t\t\tconst morphTargetsRelative = geometry.morphTargetsRelative;\n\t\t\tconst uv = geometry.attributes.uv;\n\t\t\tconst uv2 = geometry.attributes.uv2;\n\t\t\tconst groups = geometry.groups;\n\t\t\tconst drawRange = geometry.drawRange;\n\n\t\t\tif ( index !== null ) {\n\n\t\t\t\t// indexed buffer geometry\n\n\t\t\t\tif ( Array.isArray( material ) ) {\n\n\t\t\t\t\tfor ( let i = 0, il = groups.length; i < il; i ++ ) {\n\n\t\t\t\t\t\tconst group = groups[ i ];\n\t\t\t\t\t\tconst groupMaterial = material[ group.materialIndex ];\n\n\t\t\t\t\t\tconst start = Math.max( group.start, drawRange.start );\n\t\t\t\t\t\tconst end = Math.min( ( group.start + group.count ), ( drawRange.start + drawRange.count ) );\n\n\t\t\t\t\t\tfor ( let j = start, jl = end; j < jl; j += 3 ) {\n\n\t\t\t\t\t\t\tconst a = index.getX( j );\n\t\t\t\t\t\t\tconst b = index.getX( j + 1 );\n\t\t\t\t\t\t\tconst c = index.getX( j + 2 );\n\n\t\t\t\t\t\t\tintersection = checkBufferGeometryIntersection( this, groupMaterial, raycaster, _ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c );\n\n\t\t\t\t\t\t\tif ( intersection ) {\n\n\t\t\t\t\t\t\t\tintersection.faceIndex = Math.floor( j / 3 ); // triangle number in indexed buffer semantics\n\t\t\t\t\t\t\t\tintersection.face.materialIndex = group.materialIndex;\n\t\t\t\t\t\t\t\tintersects.push( intersection );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconst start = Math.max( 0, drawRange.start );\n\t\t\t\t\tconst end = Math.min( index.count, ( drawRange.start + drawRange.count ) );\n\n\t\t\t\t\tfor ( let i = start, il = end; i < il; i += 3 ) {\n\n\t\t\t\t\t\tconst a = index.getX( i );\n\t\t\t\t\t\tconst b = index.getX( i + 1 );\n\t\t\t\t\t\tconst c = index.getX( i + 2 );\n\n\t\t\t\t\t\tintersection = checkBufferGeometryIntersection( this, material, raycaster, _ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c );\n\n\t\t\t\t\t\tif ( intersection ) {\n\n\t\t\t\t\t\t\tintersection.faceIndex = Math.floor( i / 3 ); // triangle number in indexed buffer semantics\n\t\t\t\t\t\t\tintersects.push( intersection );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t} else if ( position !== undefined ) {\n\n\t\t\t\t// non-indexed buffer geometry\n\n\t\t\t\tif ( Array.isArray( material ) ) {\n\n\t\t\t\t\tfor ( let i = 0, il = groups.length; i < il; i ++ ) {\n\n\t\t\t\t\t\tconst group = groups[ i ];\n\t\t\t\t\t\tconst groupMaterial = material[ group.materialIndex ];\n\n\t\t\t\t\t\tconst start = Math.max( group.start, drawRange.start );\n\t\t\t\t\t\tconst end = Math.min( ( group.start + group.count ), ( drawRange.start + drawRange.count ) );\n\n\t\t\t\t\t\tfor ( let j = start, jl = end; j < jl; j += 3 ) {\n\n\t\t\t\t\t\t\tconst a = j;\n\t\t\t\t\t\t\tconst b = j + 1;\n\t\t\t\t\t\t\tconst c = j + 2;\n\n\t\t\t\t\t\t\tintersection = checkBufferGeometryIntersection( this, groupMaterial, raycaster, _ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c );\n\n\t\t\t\t\t\t\tif ( intersection ) {\n\n\t\t\t\t\t\t\t\tintersection.faceIndex = Math.floor( j / 3 ); // triangle number in non-indexed buffer semantics\n\t\t\t\t\t\t\t\tintersection.face.materialIndex = group.materialIndex;\n\t\t\t\t\t\t\t\tintersects.push( intersection );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconst start = Math.max( 0, drawRange.start );\n\t\t\t\t\tconst end = Math.min( position.count, ( drawRange.start + drawRange.count ) );\n\n\t\t\t\t\tfor ( let i = start, il = end; i < il; i += 3 ) {\n\n\t\t\t\t\t\tconst a = i;\n\t\t\t\t\t\tconst b = i + 1;\n\t\t\t\t\t\tconst c = i + 2;\n\n\t\t\t\t\t\tintersection = checkBufferGeometryIntersection( this, material, raycaster, _ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c );\n\n\t\t\t\t\t\tif ( intersection ) {\n\n\t\t\t\t\t\t\tintersection.faceIndex = Math.floor( i / 3 ); // triangle number in non-indexed buffer semantics\n\t\t\t\t\t\t\tintersects.push( intersection );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else if ( geometry.isGeometry ) {\n\n\t\t\tconst isMultiMaterial = Array.isArray( material );\n\n\t\t\tconst vertices = geometry.vertices;\n\t\t\tconst faces = geometry.faces;\n\t\t\tlet uvs;\n\n\t\t\tconst faceVertexUvs = geometry.faceVertexUvs[ 0 ];\n\t\t\tif ( faceVertexUvs.length > 0 ) uvs = faceVertexUvs;\n\n\t\t\tfor ( let f = 0, fl = faces.length; f < fl; f ++ ) {\n\n\t\t\t\tconst face = faces[ f ];\n\t\t\t\tconst faceMaterial = isMultiMaterial ? material[ face.materialIndex ] : material;\n\n\t\t\t\tif ( faceMaterial === undefined ) continue;\n\n\t\t\t\tconst fvA = vertices[ face.a ];\n\t\t\t\tconst fvB = vertices[ face.b ];\n\t\t\t\tconst fvC = vertices[ face.c ];\n\n\t\t\t\tintersection = checkIntersection( this, faceMaterial, raycaster, _ray, fvA, fvB, fvC, _intersectionPoint );\n\n\t\t\t\tif ( intersection ) {\n\n\t\t\t\t\tif ( uvs && uvs[ f ] ) {\n\n\t\t\t\t\t\tconst uvs_f = uvs[ f ];\n\t\t\t\t\t\t_uvA.copy( uvs_f[ 0 ] );\n\t\t\t\t\t\t_uvB.copy( uvs_f[ 1 ] );\n\t\t\t\t\t\t_uvC.copy( uvs_f[ 2 ] );\n\n\t\t\t\t\t\tintersection.uv = Triangle.getUV( _intersectionPoint, fvA, fvB, fvC, _uvA, _uvB, _uvC, new Vector2() );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tintersection.face = face;\n\t\t\t\t\tintersection.faceIndex = f;\n\t\t\t\t\tintersects.push( intersection );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n} );\n\nfunction checkIntersection( object, material, raycaster, ray, pA, pB, pC, point ) {\n\n\tlet intersect;\n\n\tif ( material.side === BackSide ) {\n\n\t\tintersect = ray.intersectTriangle( pC, pB, pA, true, point );\n\n\t} else {\n\n\t\tintersect = ray.intersectTriangle( pA, pB, pC, material.side !== DoubleSide, point );\n\n\t}\n\n\tif ( intersect === null ) return null;\n\n\t_intersectionPointWorld.copy( point );\n\t_intersectionPointWorld.applyMatrix4( object.matrixWorld );\n\n\tconst distance = raycaster.ray.origin.distanceTo( _intersectionPointWorld );\n\n\tif ( distance < raycaster.near || distance > raycaster.far ) return null;\n\n\treturn {\n\t\tdistance: distance,\n\t\tpoint: _intersectionPointWorld.clone(),\n\t\tobject: object\n\t};\n\n}\n\nfunction checkBufferGeometryIntersection( object, material, raycaster, ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c ) {\n\n\t_vA.fromBufferAttribute( position, a );\n\t_vB.fromBufferAttribute( position, b );\n\t_vC.fromBufferAttribute( position, c );\n\n\tconst morphInfluences = object.morphTargetInfluences;\n\n\tif ( material.morphTargets && morphPosition && morphInfluences ) {\n\n\t\t_morphA.set( 0, 0, 0 );\n\t\t_morphB.set( 0, 0, 0 );\n\t\t_morphC.set( 0, 0, 0 );\n\n\t\tfor ( let i = 0, il = morphPosition.length; i < il; i ++ ) {\n\n\t\t\tconst influence = morphInfluences[ i ];\n\t\t\tconst morphAttribute = morphPosition[ i ];\n\n\t\t\tif ( influence === 0 ) continue;\n\n\t\t\t_tempA.fromBufferAttribute( morphAttribute, a );\n\t\t\t_tempB.fromBufferAttribute( morphAttribute, b );\n\t\t\t_tempC.fromBufferAttribute( morphAttribute, c );\n\n\t\t\tif ( morphTargetsRelative ) {\n\n\t\t\t\t_morphA.addScaledVector( _tempA, influence );\n\t\t\t\t_morphB.addScaledVector( _tempB, influence );\n\t\t\t\t_morphC.addScaledVector( _tempC, influence );\n\n\t\t\t} else {\n\n\t\t\t\t_morphA.addScaledVector( _tempA.sub( _vA ), influence );\n\t\t\t\t_morphB.addScaledVector( _tempB.sub( _vB ), influence );\n\t\t\t\t_morphC.addScaledVector( _tempC.sub( _vC ), influence );\n\n\t\t\t}\n\n\t\t}\n\n\t\t_vA.add( _morphA );\n\t\t_vB.add( _morphB );\n\t\t_vC.add( _morphC );\n\n\t}\n\n\tif ( object.isSkinnedMesh ) {\n\n\t\tobject.boneTransform( a, _vA );\n\t\tobject.boneTransform( b, _vB );\n\t\tobject.boneTransform( c, _vC );\n\n\t}\n\n\tconst intersection = checkIntersection( object, material, raycaster, ray, _vA, _vB, _vC, _intersectionPoint );\n\n\tif ( intersection ) {\n\n\t\tif ( uv ) {\n\n\t\t\t_uvA.fromBufferAttribute( uv, a );\n\t\t\t_uvB.fromBufferAttribute( uv, b );\n\t\t\t_uvC.fromBufferAttribute( uv, c );\n\n\t\t\tintersection.uv = Triangle.getUV( _intersectionPoint, _vA, _vB, _vC, _uvA, _uvB, _uvC, new Vector2() );\n\n\t\t}\n\n\t\tif ( uv2 ) {\n\n\t\t\t_uvA.fromBufferAttribute( uv2, a );\n\t\t\t_uvB.fromBufferAttribute( uv2, b );\n\t\t\t_uvC.fromBufferAttribute( uv2, c );\n\n\t\t\tintersection.uv2 = Triangle.getUV( _intersectionPoint, _vA, _vB, _vC, _uvA, _uvB, _uvC, new Vector2() );\n\n\t\t}\n\n\t\tconst face = new Face3( a, b, c );\n\t\tTriangle.getNormal( _vA, _vB, _vC, face.normal );\n\n\t\tintersection.face = face;\n\n\t}\n\n\treturn intersection;\n\n}\n\nclass BoxBufferGeometry extends BufferGeometry {\n\n\tconstructor( width = 1, height = 1, depth = 1, widthSegments = 1, heightSegments = 1, depthSegments = 1 ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'BoxBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\twidth: width,\n\t\t\theight: height,\n\t\t\tdepth: depth,\n\t\t\twidthSegments: widthSegments,\n\t\t\theightSegments: heightSegments,\n\t\t\tdepthSegments: depthSegments\n\t\t};\n\n\t\tconst scope = this;\n\n\t\t// segments\n\n\t\twidthSegments = Math.floor( widthSegments );\n\t\theightSegments = Math.floor( heightSegments );\n\t\tdepthSegments = Math.floor( depthSegments );\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\t// helper variables\n\n\t\tlet numberOfVertices = 0;\n\t\tlet groupStart = 0;\n\n\t\t// build each side of the box geometry\n\n\t\tbuildPlane( 'z', 'y', 'x', - 1, - 1, depth, height, width, depthSegments, heightSegments, 0 ); // px\n\t\tbuildPlane( 'z', 'y', 'x', 1, - 1, depth, height, - width, depthSegments, heightSegments, 1 ); // nx\n\t\tbuildPlane( 'x', 'z', 'y', 1, 1, width, depth, height, widthSegments, depthSegments, 2 ); // py\n\t\tbuildPlane( 'x', 'z', 'y', 1, - 1, width, depth, - height, widthSegments, depthSegments, 3 ); // ny\n\t\tbuildPlane( 'x', 'y', 'z', 1, - 1, width, height, depth, widthSegments, heightSegments, 4 ); // pz\n\t\tbuildPlane( 'x', 'y', 'z', - 1, - 1, width, height, - depth, widthSegments, heightSegments, 5 ); // nz\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t\tfunction buildPlane( u, v, w, udir, vdir, width, height, depth, gridX, gridY, materialIndex ) {\n\n\t\t\tconst segmentWidth = width / gridX;\n\t\t\tconst segmentHeight = height / gridY;\n\n\t\t\tconst widthHalf = width / 2;\n\t\t\tconst heightHalf = height / 2;\n\t\t\tconst depthHalf = depth / 2;\n\n\t\t\tconst gridX1 = gridX + 1;\n\t\t\tconst gridY1 = gridY + 1;\n\n\t\t\tlet vertexCounter = 0;\n\t\t\tlet groupCount = 0;\n\n\t\t\tconst vector = new Vector3();\n\n\t\t\t// generate vertices, normals and uvs\n\n\t\t\tfor ( let iy = 0; iy < gridY1; iy ++ ) {\n\n\t\t\t\tconst y = iy * segmentHeight - heightHalf;\n\n\t\t\t\tfor ( let ix = 0; ix < gridX1; ix ++ ) {\n\n\t\t\t\t\tconst x = ix * segmentWidth - widthHalf;\n\n\t\t\t\t\t// set values to correct vector component\n\n\t\t\t\t\tvector[ u ] = x * udir;\n\t\t\t\t\tvector[ v ] = y * vdir;\n\t\t\t\t\tvector[ w ] = depthHalf;\n\n\t\t\t\t\t// now apply vector to vertex buffer\n\n\t\t\t\t\tvertices.push( vector.x, vector.y, vector.z );\n\n\t\t\t\t\t// set values to correct vector component\n\n\t\t\t\t\tvector[ u ] = 0;\n\t\t\t\t\tvector[ v ] = 0;\n\t\t\t\t\tvector[ w ] = depth > 0 ? 1 : - 1;\n\n\t\t\t\t\t// now apply vector to normal buffer\n\n\t\t\t\t\tnormals.push( vector.x, vector.y, vector.z );\n\n\t\t\t\t\t// uvs\n\n\t\t\t\t\tuvs.push( ix / gridX );\n\t\t\t\t\tuvs.push( 1 - ( iy / gridY ) );\n\n\t\t\t\t\t// counters\n\n\t\t\t\t\tvertexCounter += 1;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// indices\n\n\t\t\t// 1. you need three indices to draw a single face\n\t\t\t// 2. a single segment consists of two faces\n\t\t\t// 3. so we need to generate six (2*3) indices per segment\n\n\t\t\tfor ( let iy = 0; iy < gridY; iy ++ ) {\n\n\t\t\t\tfor ( let ix = 0; ix < gridX; ix ++ ) {\n\n\t\t\t\t\tconst a = numberOfVertices + ix + gridX1 * iy;\n\t\t\t\t\tconst b = numberOfVertices + ix + gridX1 * ( iy + 1 );\n\t\t\t\t\tconst c = numberOfVertices + ( ix + 1 ) + gridX1 * ( iy + 1 );\n\t\t\t\t\tconst d = numberOfVertices + ( ix + 1 ) + gridX1 * iy;\n\n\t\t\t\t\t// faces\n\n\t\t\t\t\tindices.push( a, b, d );\n\t\t\t\t\tindices.push( b, c, d );\n\n\t\t\t\t\t// increase counter\n\n\t\t\t\t\tgroupCount += 6;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// add a group to the geometry. this will ensure multi material support\n\n\t\t\tscope.addGroup( groupStart, groupCount, materialIndex );\n\n\t\t\t// calculate new start value for groups\n\n\t\t\tgroupStart += groupCount;\n\n\t\t\t// update total number of vertices\n\n\t\t\tnumberOfVertices += vertexCounter;\n\n\t\t}\n\n\t}\n\n}\n\n/**\n * Uniform Utilities\n */\n\nfunction cloneUniforms( src ) {\n\n\tconst dst = {};\n\n\tfor ( const u in src ) {\n\n\t\tdst[ u ] = {};\n\n\t\tfor ( const p in src[ u ] ) {\n\n\t\t\tconst property = src[ u ][ p ];\n\n\t\t\tif ( property && ( property.isColor ||\n\t\t\t\tproperty.isMatrix3 || property.isMatrix4 ||\n\t\t\t\tproperty.isVector2 || property.isVector3 || property.isVector4 ||\n\t\t\t\tproperty.isTexture ) ) {\n\n\t\t\t\tdst[ u ][ p ] = property.clone();\n\n\t\t\t} else if ( Array.isArray( property ) ) {\n\n\t\t\t\tdst[ u ][ p ] = property.slice();\n\n\t\t\t} else {\n\n\t\t\t\tdst[ u ][ p ] = property;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\treturn dst;\n\n}\n\nfunction mergeUniforms( uniforms ) {\n\n\tconst merged = {};\n\n\tfor ( let u = 0; u < uniforms.length; u ++ ) {\n\n\t\tconst tmp = cloneUniforms( uniforms[ u ] );\n\n\t\tfor ( const p in tmp ) {\n\n\t\t\tmerged[ p ] = tmp[ p ];\n\n\t\t}\n\n\t}\n\n\treturn merged;\n\n}\n\n// Legacy\n\nconst UniformsUtils = { clone: cloneUniforms, merge: mergeUniforms };\n\nvar default_vertex = \"void main() {\\n\\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );\\n}\";\n\nvar default_fragment = \"void main() {\\n\\tgl_FragColor = vec4( 1.0, 0.0, 0.0, 1.0 );\\n}\";\n\n/**\n * parameters = {\n *  defines: { \"label\" : \"value\" },\n *  uniforms: { \"parameter1\": { value: 1.0 }, \"parameter2\": { value2: 2 } },\n *\n *  fragmentShader: <string>,\n *  vertexShader: <string>,\n *\n *  wireframe: <boolean>,\n *  wireframeLinewidth: <float>,\n *\n *  lights: <bool>,\n *\n *  skinning: <bool>,\n *  morphTargets: <bool>,\n *  morphNormals: <bool>\n * }\n */\n\nfunction ShaderMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.type = 'ShaderMaterial';\n\n\tthis.defines = {};\n\tthis.uniforms = {};\n\n\tthis.vertexShader = default_vertex;\n\tthis.fragmentShader = default_fragment;\n\n\tthis.linewidth = 1;\n\n\tthis.wireframe = false;\n\tthis.wireframeLinewidth = 1;\n\n\tthis.fog = false; // set to use scene fog\n\tthis.lights = false; // set to use scene lights\n\tthis.clipping = false; // set to use user-defined clipping planes\n\n\tthis.skinning = false; // set to use skinning attribute streams\n\tthis.morphTargets = false; // set to use morph targets\n\tthis.morphNormals = false; // set to use morph normals\n\n\tthis.extensions = {\n\t\tderivatives: false, // set to use derivatives\n\t\tfragDepth: false, // set to use fragment depth values\n\t\tdrawBuffers: false, // set to use draw buffers\n\t\tshaderTextureLOD: false // set to use shader texture LOD\n\t};\n\n\t// When rendered geometry doesn't include these attributes but the material does,\n\t// use these default values in WebGL. This avoids errors when buffer data is missing.\n\tthis.defaultAttributeValues = {\n\t\t'color': [ 1, 1, 1 ],\n\t\t'uv': [ 0, 0 ],\n\t\t'uv2': [ 0, 0 ]\n\t};\n\n\tthis.index0AttributeName = undefined;\n\tthis.uniformsNeedUpdate = false;\n\n\tthis.glslVersion = null;\n\n\tif ( parameters !== undefined ) {\n\n\t\tif ( parameters.attributes !== undefined ) {\n\n\t\t\tconsole.error( 'THREE.ShaderMaterial: attributes should now be defined in THREE.BufferGeometry instead.' );\n\n\t\t}\n\n\t\tthis.setValues( parameters );\n\n\t}\n\n}\n\nShaderMaterial.prototype = Object.create( Material.prototype );\nShaderMaterial.prototype.constructor = ShaderMaterial;\n\nShaderMaterial.prototype.isShaderMaterial = true;\n\nShaderMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.fragmentShader = source.fragmentShader;\n\tthis.vertexShader = source.vertexShader;\n\n\tthis.uniforms = cloneUniforms( source.uniforms );\n\n\tthis.defines = Object.assign( {}, source.defines );\n\n\tthis.wireframe = source.wireframe;\n\tthis.wireframeLinewidth = source.wireframeLinewidth;\n\n\tthis.lights = source.lights;\n\tthis.clipping = source.clipping;\n\n\tthis.skinning = source.skinning;\n\n\tthis.morphTargets = source.morphTargets;\n\tthis.morphNormals = source.morphNormals;\n\n\tthis.extensions = Object.assign( {}, source.extensions );\n\n\tthis.glslVersion = source.glslVersion;\n\n\treturn this;\n\n};\n\nShaderMaterial.prototype.toJSON = function ( meta ) {\n\n\tconst data = Material.prototype.toJSON.call( this, meta );\n\n\tdata.glslVersion = this.glslVersion;\n\tdata.uniforms = {};\n\n\tfor ( const name in this.uniforms ) {\n\n\t\tconst uniform = this.uniforms[ name ];\n\t\tconst value = uniform.value;\n\n\t\tif ( value && value.isTexture ) {\n\n\t\t\tdata.uniforms[ name ] = {\n\t\t\t\ttype: 't',\n\t\t\t\tvalue: value.toJSON( meta ).uuid\n\t\t\t};\n\n\t\t} else if ( value && value.isColor ) {\n\n\t\t\tdata.uniforms[ name ] = {\n\t\t\t\ttype: 'c',\n\t\t\t\tvalue: value.getHex()\n\t\t\t};\n\n\t\t} else if ( value && value.isVector2 ) {\n\n\t\t\tdata.uniforms[ name ] = {\n\t\t\t\ttype: 'v2',\n\t\t\t\tvalue: value.toArray()\n\t\t\t};\n\n\t\t} else if ( value && value.isVector3 ) {\n\n\t\t\tdata.uniforms[ name ] = {\n\t\t\t\ttype: 'v3',\n\t\t\t\tvalue: value.toArray()\n\t\t\t};\n\n\t\t} else if ( value && value.isVector4 ) {\n\n\t\t\tdata.uniforms[ name ] = {\n\t\t\t\ttype: 'v4',\n\t\t\t\tvalue: value.toArray()\n\t\t\t};\n\n\t\t} else if ( value && value.isMatrix3 ) {\n\n\t\t\tdata.uniforms[ name ] = {\n\t\t\t\ttype: 'm3',\n\t\t\t\tvalue: value.toArray()\n\t\t\t};\n\n\t\t} else if ( value && value.isMatrix4 ) {\n\n\t\t\tdata.uniforms[ name ] = {\n\t\t\t\ttype: 'm4',\n\t\t\t\tvalue: value.toArray()\n\t\t\t};\n\n\t\t} else {\n\n\t\t\tdata.uniforms[ name ] = {\n\t\t\t\tvalue: value\n\t\t\t};\n\n\t\t\t// note: the array variants v2v, v3v, v4v, m4v and tv are not supported so far\n\n\t\t}\n\n\t}\n\n\tif ( Object.keys( this.defines ).length > 0 ) data.defines = this.defines;\n\n\tdata.vertexShader = this.vertexShader;\n\tdata.fragmentShader = this.fragmentShader;\n\n\tconst extensions = {};\n\n\tfor ( const key in this.extensions ) {\n\n\t\tif ( this.extensions[ key ] === true ) extensions[ key ] = true;\n\n\t}\n\n\tif ( Object.keys( extensions ).length > 0 ) data.extensions = extensions;\n\n\treturn data;\n\n};\n\nfunction Camera() {\n\n\tObject3D.call( this );\n\n\tthis.type = 'Camera';\n\n\tthis.matrixWorldInverse = new Matrix4();\n\n\tthis.projectionMatrix = new Matrix4();\n\tthis.projectionMatrixInverse = new Matrix4();\n\n}\n\nCamera.prototype = Object.assign( Object.create( Object3D.prototype ), {\n\n\tconstructor: Camera,\n\n\tisCamera: true,\n\n\tcopy: function ( source, recursive ) {\n\n\t\tObject3D.prototype.copy.call( this, source, recursive );\n\n\t\tthis.matrixWorldInverse.copy( source.matrixWorldInverse );\n\n\t\tthis.projectionMatrix.copy( source.projectionMatrix );\n\t\tthis.projectionMatrixInverse.copy( source.projectionMatrixInverse );\n\n\t\treturn this;\n\n\t},\n\n\tgetWorldDirection: function ( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Camera: .getWorldDirection() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\tthis.updateWorldMatrix( true, false );\n\n\t\tconst e = this.matrixWorld.elements;\n\n\t\treturn target.set( - e[ 8 ], - e[ 9 ], - e[ 10 ] ).normalize();\n\n\t},\n\n\tupdateMatrixWorld: function ( force ) {\n\n\t\tObject3D.prototype.updateMatrixWorld.call( this, force );\n\n\t\tthis.matrixWorldInverse.copy( this.matrixWorld ).invert();\n\n\t},\n\n\tupdateWorldMatrix: function ( updateParents, updateChildren ) {\n\n\t\tObject3D.prototype.updateWorldMatrix.call( this, updateParents, updateChildren );\n\n\t\tthis.matrixWorldInverse.copy( this.matrixWorld ).invert();\n\n\t},\n\n\tclone: function () {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n} );\n\nfunction PerspectiveCamera( fov = 50, aspect = 1, near = 0.1, far = 2000 ) {\n\n\tCamera.call( this );\n\n\tthis.type = 'PerspectiveCamera';\n\n\tthis.fov = fov;\n\tthis.zoom = 1;\n\n\tthis.near = near;\n\tthis.far = far;\n\tthis.focus = 10;\n\n\tthis.aspect = aspect;\n\tthis.view = null;\n\n\tthis.filmGauge = 35;\t// width of the film (default in millimeters)\n\tthis.filmOffset = 0;\t// horizontal film offset (same unit as gauge)\n\n\tthis.updateProjectionMatrix();\n\n}\n\nPerspectiveCamera.prototype = Object.assign( Object.create( Camera.prototype ), {\n\n\tconstructor: PerspectiveCamera,\n\n\tisPerspectiveCamera: true,\n\n\tcopy: function ( source, recursive ) {\n\n\t\tCamera.prototype.copy.call( this, source, recursive );\n\n\t\tthis.fov = source.fov;\n\t\tthis.zoom = source.zoom;\n\n\t\tthis.near = source.near;\n\t\tthis.far = source.far;\n\t\tthis.focus = source.focus;\n\n\t\tthis.aspect = source.aspect;\n\t\tthis.view = source.view === null ? null : Object.assign( {}, source.view );\n\n\t\tthis.filmGauge = source.filmGauge;\n\t\tthis.filmOffset = source.filmOffset;\n\n\t\treturn this;\n\n\t},\n\n\t/**\n\t * Sets the FOV by focal length in respect to the current .filmGauge.\n\t *\n\t * The default film gauge is 35, so that the focal length can be specified for\n\t * a 35mm (full frame) camera.\n\t *\n\t * Values for focal length and film gauge must have the same unit.\n\t */\n\tsetFocalLength: function ( focalLength ) {\n\n\t\t// see http://www.bobatkins.com/photography/technical/field_of_view.html\n\t\tconst vExtentSlope = 0.5 * this.getFilmHeight() / focalLength;\n\n\t\tthis.fov = MathUtils.RAD2DEG * 2 * Math.atan( vExtentSlope );\n\t\tthis.updateProjectionMatrix();\n\n\t},\n\n\t/**\n\t * Calculates the focal length from the current .fov and .filmGauge.\n\t */\n\tgetFocalLength: function () {\n\n\t\tconst vExtentSlope = Math.tan( MathUtils.DEG2RAD * 0.5 * this.fov );\n\n\t\treturn 0.5 * this.getFilmHeight() / vExtentSlope;\n\n\t},\n\n\tgetEffectiveFOV: function () {\n\n\t\treturn MathUtils.RAD2DEG * 2 * Math.atan(\n\t\t\tMath.tan( MathUtils.DEG2RAD * 0.5 * this.fov ) / this.zoom );\n\n\t},\n\n\tgetFilmWidth: function () {\n\n\t\t// film not completely covered in portrait format (aspect < 1)\n\t\treturn this.filmGauge * Math.min( this.aspect, 1 );\n\n\t},\n\n\tgetFilmHeight: function () {\n\n\t\t// film not completely covered in landscape format (aspect > 1)\n\t\treturn this.filmGauge / Math.max( this.aspect, 1 );\n\n\t},\n\n\t/**\n\t * Sets an offset in a larger frustum. This is useful for multi-window or\n\t * multi-monitor/multi-machine setups.\n\t *\n\t * For example, if you have 3x2 monitors and each monitor is 1920x1080 and\n\t * the monitors are in grid like this\n\t *\n\t *   +---+---+---+\n\t *   | A | B | C |\n\t *   +---+---+---+\n\t *   | D | E | F |\n\t *   +---+---+---+\n\t *\n\t * then for each monitor you would call it like this\n\t *\n\t *   const w = 1920;\n\t *   const h = 1080;\n\t *   const fullWidth = w * 3;\n\t *   const fullHeight = h * 2;\n\t *\n\t *   --A--\n\t *   camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 0, w, h );\n\t *   --B--\n\t *   camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 0, w, h );\n\t *   --C--\n\t *   camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 0, w, h );\n\t *   --D--\n\t *   camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 1, w, h );\n\t *   --E--\n\t *   camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 1, w, h );\n\t *   --F--\n\t *   camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 1, w, h );\n\t *\n\t *   Note there is no reason monitors have to be the same size or in a grid.\n\t */\n\tsetViewOffset: function ( fullWidth, fullHeight, x, y, width, height ) {\n\n\t\tthis.aspect = fullWidth / fullHeight;\n\n\t\tif ( this.view === null ) {\n\n\t\t\tthis.view = {\n\t\t\t\tenabled: true,\n\t\t\t\tfullWidth: 1,\n\t\t\t\tfullHeight: 1,\n\t\t\t\toffsetX: 0,\n\t\t\t\toffsetY: 0,\n\t\t\t\twidth: 1,\n\t\t\t\theight: 1\n\t\t\t};\n\n\t\t}\n\n\t\tthis.view.enabled = true;\n\t\tthis.view.fullWidth = fullWidth;\n\t\tthis.view.fullHeight = fullHeight;\n\t\tthis.view.offsetX = x;\n\t\tthis.view.offsetY = y;\n\t\tthis.view.width = width;\n\t\tthis.view.height = height;\n\n\t\tthis.updateProjectionMatrix();\n\n\t},\n\n\tclearViewOffset: function () {\n\n\t\tif ( this.view !== null ) {\n\n\t\t\tthis.view.enabled = false;\n\n\t\t}\n\n\t\tthis.updateProjectionMatrix();\n\n\t},\n\n\tupdateProjectionMatrix: function () {\n\n\t\tconst near = this.near;\n\t\tlet top = near * Math.tan( MathUtils.DEG2RAD * 0.5 * this.fov ) / this.zoom;\n\t\tlet height = 2 * top;\n\t\tlet width = this.aspect * height;\n\t\tlet left = - 0.5 * width;\n\t\tconst view = this.view;\n\n\t\tif ( this.view !== null && this.view.enabled ) {\n\n\t\t\tconst fullWidth = view.fullWidth,\n\t\t\t\tfullHeight = view.fullHeight;\n\n\t\t\tleft += view.offsetX * width / fullWidth;\n\t\t\ttop -= view.offsetY * height / fullHeight;\n\t\t\twidth *= view.width / fullWidth;\n\t\t\theight *= view.height / fullHeight;\n\n\t\t}\n\n\t\tconst skew = this.filmOffset;\n\t\tif ( skew !== 0 ) left += near * skew / this.getFilmWidth();\n\n\t\tthis.projectionMatrix.makePerspective( left, left + width, top, top - height, near, this.far );\n\n\t\tthis.projectionMatrixInverse.copy( this.projectionMatrix ).invert();\n\n\t},\n\n\ttoJSON: function ( meta ) {\n\n\t\tconst data = Object3D.prototype.toJSON.call( this, meta );\n\n\t\tdata.object.fov = this.fov;\n\t\tdata.object.zoom = this.zoom;\n\n\t\tdata.object.near = this.near;\n\t\tdata.object.far = this.far;\n\t\tdata.object.focus = this.focus;\n\n\t\tdata.object.aspect = this.aspect;\n\n\t\tif ( this.view !== null ) data.object.view = Object.assign( {}, this.view );\n\n\t\tdata.object.filmGauge = this.filmGauge;\n\t\tdata.object.filmOffset = this.filmOffset;\n\n\t\treturn data;\n\n\t}\n\n} );\n\nconst fov = 90, aspect = 1;\n\nfunction CubeCamera( near, far, renderTarget ) {\n\n\tObject3D.call( this );\n\n\tthis.type = 'CubeCamera';\n\n\tif ( renderTarget.isWebGLCubeRenderTarget !== true ) {\n\n\t\tconsole.error( 'THREE.CubeCamera: The constructor now expects an instance of WebGLCubeRenderTarget as third parameter.' );\n\t\treturn;\n\n\t}\n\n\tthis.renderTarget = renderTarget;\n\n\tconst cameraPX = new PerspectiveCamera( fov, aspect, near, far );\n\tcameraPX.layers = this.layers;\n\tcameraPX.up.set( 0, - 1, 0 );\n\tcameraPX.lookAt( new Vector3( 1, 0, 0 ) );\n\tthis.add( cameraPX );\n\n\tconst cameraNX = new PerspectiveCamera( fov, aspect, near, far );\n\tcameraNX.layers = this.layers;\n\tcameraNX.up.set( 0, - 1, 0 );\n\tcameraNX.lookAt( new Vector3( - 1, 0, 0 ) );\n\tthis.add( cameraNX );\n\n\tconst cameraPY = new PerspectiveCamera( fov, aspect, near, far );\n\tcameraPY.layers = this.layers;\n\tcameraPY.up.set( 0, 0, 1 );\n\tcameraPY.lookAt( new Vector3( 0, 1, 0 ) );\n\tthis.add( cameraPY );\n\n\tconst cameraNY = new PerspectiveCamera( fov, aspect, near, far );\n\tcameraNY.layers = this.layers;\n\tcameraNY.up.set( 0, 0, - 1 );\n\tcameraNY.lookAt( new Vector3( 0, - 1, 0 ) );\n\tthis.add( cameraNY );\n\n\tconst cameraPZ = new PerspectiveCamera( fov, aspect, near, far );\n\tcameraPZ.layers = this.layers;\n\tcameraPZ.up.set( 0, - 1, 0 );\n\tcameraPZ.lookAt( new Vector3( 0, 0, 1 ) );\n\tthis.add( cameraPZ );\n\n\tconst cameraNZ = new PerspectiveCamera( fov, aspect, near, far );\n\tcameraNZ.layers = this.layers;\n\tcameraNZ.up.set( 0, - 1, 0 );\n\tcameraNZ.lookAt( new Vector3( 0, 0, - 1 ) );\n\tthis.add( cameraNZ );\n\n\tthis.update = function ( renderer, scene ) {\n\n\t\tif ( this.parent === null ) this.updateMatrixWorld();\n\n\t\tconst currentXrEnabled = renderer.xr.enabled;\n\t\tconst currentRenderTarget = renderer.getRenderTarget();\n\n\t\trenderer.xr.enabled = false;\n\n\t\tconst generateMipmaps = renderTarget.texture.generateMipmaps;\n\n\t\trenderTarget.texture.generateMipmaps = false;\n\n\t\trenderer.setRenderTarget( renderTarget, 0 );\n\t\trenderer.render( scene, cameraPX );\n\n\t\trenderer.setRenderTarget( renderTarget, 1 );\n\t\trenderer.render( scene, cameraNX );\n\n\t\trenderer.setRenderTarget( renderTarget, 2 );\n\t\trenderer.render( scene, cameraPY );\n\n\t\trenderer.setRenderTarget( renderTarget, 3 );\n\t\trenderer.render( scene, cameraNY );\n\n\t\trenderer.setRenderTarget( renderTarget, 4 );\n\t\trenderer.render( scene, cameraPZ );\n\n\t\trenderTarget.texture.generateMipmaps = generateMipmaps;\n\n\t\trenderer.setRenderTarget( renderTarget, 5 );\n\t\trenderer.render( scene, cameraNZ );\n\n\t\trenderer.setRenderTarget( currentRenderTarget );\n\n\t\trenderer.xr.enabled = currentXrEnabled;\n\n\t};\n\n}\n\nCubeCamera.prototype = Object.create( Object3D.prototype );\nCubeCamera.prototype.constructor = CubeCamera;\n\nfunction CubeTexture( images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding ) {\n\n\timages = images !== undefined ? images : [];\n\tmapping = mapping !== undefined ? mapping : CubeReflectionMapping;\n\tformat = format !== undefined ? format : RGBFormat;\n\n\tTexture.call( this, images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );\n\n\tthis.flipY = false;\n\n\t// Why CubeTexture._needsFlipEnvMap is necessary:\n\t//\n\t// By convention -- likely based on the RenderMan spec from the 1990's -- cube maps are specified by WebGL (and three.js)\n\t// in a coordinate system in which positive-x is to the right when looking up the positive-z axis -- in other words,\n\t// in a left-handed coordinate system. By continuing this convention, preexisting cube maps continued to render correctly.\n\n\t// three.js uses a right-handed coordinate system. So environment maps used in three.js appear to have px and nx swapped\n\t// and the flag _needsFlipEnvMap controls this conversion. The flip is not required (and thus _needsFlipEnvMap is set to false)\n\t// when using WebGLCubeRenderTarget.texture as a cube texture.\n\n\tthis._needsFlipEnvMap = true;\n\n}\n\nCubeTexture.prototype = Object.create( Texture.prototype );\nCubeTexture.prototype.constructor = CubeTexture;\n\nCubeTexture.prototype.isCubeTexture = true;\n\nObject.defineProperty( CubeTexture.prototype, 'images', {\n\n\tget: function () {\n\n\t\treturn this.image;\n\n\t},\n\n\tset: function ( value ) {\n\n\t\tthis.image = value;\n\n\t}\n\n} );\n\nfunction WebGLCubeRenderTarget( size, options, dummy ) {\n\n\tif ( Number.isInteger( options ) ) {\n\n\t\tconsole.warn( 'THREE.WebGLCubeRenderTarget: constructor signature is now WebGLCubeRenderTarget( size, options )' );\n\n\t\toptions = dummy;\n\n\t}\n\n\tWebGLRenderTarget.call( this, size, size, options );\n\n\toptions = options || {};\n\n\tthis.texture = new CubeTexture( undefined, options.mapping, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.encoding );\n\n\tthis.texture._needsFlipEnvMap = false;\n\n}\n\nWebGLCubeRenderTarget.prototype = Object.create( WebGLRenderTarget.prototype );\nWebGLCubeRenderTarget.prototype.constructor = WebGLCubeRenderTarget;\n\nWebGLCubeRenderTarget.prototype.isWebGLCubeRenderTarget = true;\n\nWebGLCubeRenderTarget.prototype.fromEquirectangularTexture = function ( renderer, texture ) {\n\n\tthis.texture.type = texture.type;\n\tthis.texture.format = RGBAFormat; // see #18859\n\tthis.texture.encoding = texture.encoding;\n\n\tthis.texture.generateMipmaps = texture.generateMipmaps;\n\tthis.texture.minFilter = texture.minFilter;\n\tthis.texture.magFilter = texture.magFilter;\n\n\tconst shader = {\n\n\t\tuniforms: {\n\t\t\ttEquirect: { value: null },\n\t\t},\n\n\t\tvertexShader: /* glsl */`\n\n\t\t\tvarying vec3 vWorldDirection;\n\n\t\t\tvec3 transformDirection( in vec3 dir, in mat4 matrix ) {\n\n\t\t\t\treturn normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );\n\n\t\t\t}\n\n\t\t\tvoid main() {\n\n\t\t\t\tvWorldDirection = transformDirection( position, modelMatrix );\n\n\t\t\t\t#include <begin_vertex>\n\t\t\t\t#include <project_vertex>\n\n\t\t\t}\n\t\t`,\n\n\t\tfragmentShader: /* glsl */`\n\n\t\t\tuniform sampler2D tEquirect;\n\n\t\t\tvarying vec3 vWorldDirection;\n\n\t\t\t#include <common>\n\n\t\t\tvoid main() {\n\n\t\t\t\tvec3 direction = normalize( vWorldDirection );\n\n\t\t\t\tvec2 sampleUV = equirectUv( direction );\n\n\t\t\t\tgl_FragColor = texture2D( tEquirect, sampleUV );\n\n\t\t\t}\n\t\t`\n\t};\n\n\tconst geometry = new BoxBufferGeometry( 5, 5, 5 );\n\n\tconst material = new ShaderMaterial( {\n\n\t\tname: 'CubemapFromEquirect',\n\n\t\tuniforms: cloneUniforms( shader.uniforms ),\n\t\tvertexShader: shader.vertexShader,\n\t\tfragmentShader: shader.fragmentShader,\n\t\tside: BackSide,\n\t\tblending: NoBlending\n\n\t} );\n\n\tmaterial.uniforms.tEquirect.value = texture;\n\n\tconst mesh = new Mesh( geometry, material );\n\n\tconst currentMinFilter = texture.minFilter;\n\n\t// Avoid blurred poles\n\tif ( texture.minFilter === LinearMipmapLinearFilter ) texture.minFilter = LinearFilter;\n\n\tconst camera = new CubeCamera( 1, 10, this );\n\tcamera.update( renderer, mesh );\n\n\ttexture.minFilter = currentMinFilter;\n\n\tmesh.geometry.dispose();\n\tmesh.material.dispose();\n\n\treturn this;\n\n};\n\nWebGLCubeRenderTarget.prototype.clear = function ( renderer, color, depth, stencil ) {\n\n\tconst currentRenderTarget = renderer.getRenderTarget();\n\n\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\trenderer.setRenderTarget( this, i );\n\n\t\trenderer.clear( color, depth, stencil );\n\n\t}\n\n\trenderer.setRenderTarget( currentRenderTarget );\n\n};\n\nfunction DataTexture( data, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, encoding ) {\n\n\tTexture.call( this, null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );\n\n\tthis.image = { data: data || null, width: width || 1, height: height || 1 };\n\n\tthis.magFilter = magFilter !== undefined ? magFilter : NearestFilter;\n\tthis.minFilter = minFilter !== undefined ? minFilter : NearestFilter;\n\n\tthis.generateMipmaps = false;\n\tthis.flipY = false;\n\tthis.unpackAlignment = 1;\n\n\tthis.needsUpdate = true;\n\n}\n\nDataTexture.prototype = Object.create( Texture.prototype );\nDataTexture.prototype.constructor = DataTexture;\n\nDataTexture.prototype.isDataTexture = true;\n\nconst _sphere$1 = /*@__PURE__*/ new Sphere();\nconst _vector$5 = /*@__PURE__*/ new Vector3();\n\nclass Frustum {\n\n\tconstructor( p0, p1, p2, p3, p4, p5 ) {\n\n\t\tthis.planes = [\n\n\t\t\t( p0 !== undefined ) ? p0 : new Plane(),\n\t\t\t( p1 !== undefined ) ? p1 : new Plane(),\n\t\t\t( p2 !== undefined ) ? p2 : new Plane(),\n\t\t\t( p3 !== undefined ) ? p3 : new Plane(),\n\t\t\t( p4 !== undefined ) ? p4 : new Plane(),\n\t\t\t( p5 !== undefined ) ? p5 : new Plane()\n\n\t\t];\n\n\t}\n\n\tset( p0, p1, p2, p3, p4, p5 ) {\n\n\t\tconst planes = this.planes;\n\n\t\tplanes[ 0 ].copy( p0 );\n\t\tplanes[ 1 ].copy( p1 );\n\t\tplanes[ 2 ].copy( p2 );\n\t\tplanes[ 3 ].copy( p3 );\n\t\tplanes[ 4 ].copy( p4 );\n\t\tplanes[ 5 ].copy( p5 );\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( frustum ) {\n\n\t\tconst planes = this.planes;\n\n\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\tplanes[ i ].copy( frustum.planes[ i ] );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetFromProjectionMatrix( m ) {\n\n\t\tconst planes = this.planes;\n\t\tconst me = m.elements;\n\t\tconst me0 = me[ 0 ], me1 = me[ 1 ], me2 = me[ 2 ], me3 = me[ 3 ];\n\t\tconst me4 = me[ 4 ], me5 = me[ 5 ], me6 = me[ 6 ], me7 = me[ 7 ];\n\t\tconst me8 = me[ 8 ], me9 = me[ 9 ], me10 = me[ 10 ], me11 = me[ 11 ];\n\t\tconst me12 = me[ 12 ], me13 = me[ 13 ], me14 = me[ 14 ], me15 = me[ 15 ];\n\n\t\tplanes[ 0 ].setComponents( me3 - me0, me7 - me4, me11 - me8, me15 - me12 ).normalize();\n\t\tplanes[ 1 ].setComponents( me3 + me0, me7 + me4, me11 + me8, me15 + me12 ).normalize();\n\t\tplanes[ 2 ].setComponents( me3 + me1, me7 + me5, me11 + me9, me15 + me13 ).normalize();\n\t\tplanes[ 3 ].setComponents( me3 - me1, me7 - me5, me11 - me9, me15 - me13 ).normalize();\n\t\tplanes[ 4 ].setComponents( me3 - me2, me7 - me6, me11 - me10, me15 - me14 ).normalize();\n\t\tplanes[ 5 ].setComponents( me3 + me2, me7 + me6, me11 + me10, me15 + me14 ).normalize();\n\n\t\treturn this;\n\n\t}\n\n\tintersectsObject( object ) {\n\n\t\tconst geometry = object.geometry;\n\n\t\tif ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();\n\n\t\t_sphere$1.copy( geometry.boundingSphere ).applyMatrix4( object.matrixWorld );\n\n\t\treturn this.intersectsSphere( _sphere$1 );\n\n\t}\n\n\tintersectsSprite( sprite ) {\n\n\t\t_sphere$1.center.set( 0, 0, 0 );\n\t\t_sphere$1.radius = 0.7071067811865476;\n\t\t_sphere$1.applyMatrix4( sprite.matrixWorld );\n\n\t\treturn this.intersectsSphere( _sphere$1 );\n\n\t}\n\n\tintersectsSphere( sphere ) {\n\n\t\tconst planes = this.planes;\n\t\tconst center = sphere.center;\n\t\tconst negRadius = - sphere.radius;\n\n\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\tconst distance = planes[ i ].distanceToPoint( center );\n\n\t\t\tif ( distance < negRadius ) {\n\n\t\t\t\treturn false;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn true;\n\n\t}\n\n\tintersectsBox( box ) {\n\n\t\tconst planes = this.planes;\n\n\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\tconst plane = planes[ i ];\n\n\t\t\t// corner at max distance\n\n\t\t\t_vector$5.x = plane.normal.x > 0 ? box.max.x : box.min.x;\n\t\t\t_vector$5.y = plane.normal.y > 0 ? box.max.y : box.min.y;\n\t\t\t_vector$5.z = plane.normal.z > 0 ? box.max.z : box.min.z;\n\n\t\t\tif ( plane.distanceToPoint( _vector$5 ) < 0 ) {\n\n\t\t\t\treturn false;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn true;\n\n\t}\n\n\tcontainsPoint( point ) {\n\n\t\tconst planes = this.planes;\n\n\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\tif ( planes[ i ].distanceToPoint( point ) < 0 ) {\n\n\t\t\t\treturn false;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn true;\n\n\t}\n\n}\n\nfunction WebGLAnimation() {\n\n\tlet context = null;\n\tlet isAnimating = false;\n\tlet animationLoop = null;\n\tlet requestId = null;\n\n\tfunction onAnimationFrame( time, frame ) {\n\n\t\tanimationLoop( time, frame );\n\n\t\trequestId = context.requestAnimationFrame( onAnimationFrame );\n\n\t}\n\n\treturn {\n\n\t\tstart: function () {\n\n\t\t\tif ( isAnimating === true ) return;\n\t\t\tif ( animationLoop === null ) return;\n\n\t\t\trequestId = context.requestAnimationFrame( onAnimationFrame );\n\n\t\t\tisAnimating = true;\n\n\t\t},\n\n\t\tstop: function () {\n\n\t\t\tcontext.cancelAnimationFrame( requestId );\n\n\t\t\tisAnimating = false;\n\n\t\t},\n\n\t\tsetAnimationLoop: function ( callback ) {\n\n\t\t\tanimationLoop = callback;\n\n\t\t},\n\n\t\tsetContext: function ( value ) {\n\n\t\t\tcontext = value;\n\n\t\t}\n\n\t};\n\n}\n\nfunction WebGLAttributes( gl, capabilities ) {\n\n\tconst isWebGL2 = capabilities.isWebGL2;\n\n\tconst buffers = new WeakMap();\n\n\tfunction createBuffer( attribute, bufferType ) {\n\n\t\tconst array = attribute.array;\n\t\tconst usage = attribute.usage;\n\n\t\tconst buffer = gl.createBuffer();\n\n\t\tgl.bindBuffer( bufferType, buffer );\n\t\tgl.bufferData( bufferType, array, usage );\n\n\t\tattribute.onUploadCallback();\n\n\t\tlet type = 5126;\n\n\t\tif ( array instanceof Float32Array ) {\n\n\t\t\ttype = 5126;\n\n\t\t} else if ( array instanceof Float64Array ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLAttributes: Unsupported data buffer format: Float64Array.' );\n\n\t\t} else if ( array instanceof Uint16Array ) {\n\n\t\t\tif ( attribute.isFloat16BufferAttribute ) {\n\n\t\t\t\tif ( isWebGL2 ) {\n\n\t\t\t\t\ttype = 5131;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.warn( 'THREE.WebGLAttributes: Usage of Float16BufferAttribute requires WebGL2.' );\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\ttype = 5123;\n\n\t\t\t}\n\n\t\t} else if ( array instanceof Int16Array ) {\n\n\t\t\ttype = 5122;\n\n\t\t} else if ( array instanceof Uint32Array ) {\n\n\t\t\ttype = 5125;\n\n\t\t} else if ( array instanceof Int32Array ) {\n\n\t\t\ttype = 5124;\n\n\t\t} else if ( array instanceof Int8Array ) {\n\n\t\t\ttype = 5120;\n\n\t\t} else if ( array instanceof Uint8Array ) {\n\n\t\t\ttype = 5121;\n\n\t\t}\n\n\t\treturn {\n\t\t\tbuffer: buffer,\n\t\t\ttype: type,\n\t\t\tbytesPerElement: array.BYTES_PER_ELEMENT,\n\t\t\tversion: attribute.version\n\t\t};\n\n\t}\n\n\tfunction updateBuffer( buffer, attribute, bufferType ) {\n\n\t\tconst array = attribute.array;\n\t\tconst updateRange = attribute.updateRange;\n\n\t\tgl.bindBuffer( bufferType, buffer );\n\n\t\tif ( updateRange.count === - 1 ) {\n\n\t\t\t// Not using update ranges\n\n\t\t\tgl.bufferSubData( bufferType, 0, array );\n\n\t\t} else {\n\n\t\t\tif ( isWebGL2 ) {\n\n\t\t\t\tgl.bufferSubData( bufferType, updateRange.offset * array.BYTES_PER_ELEMENT,\n\t\t\t\t\tarray, updateRange.offset, updateRange.count );\n\n\t\t\t} else {\n\n\t\t\t\tgl.bufferSubData( bufferType, updateRange.offset * array.BYTES_PER_ELEMENT,\n\t\t\t\t\tarray.subarray( updateRange.offset, updateRange.offset + updateRange.count ) );\n\n\t\t\t}\n\n\t\t\tupdateRange.count = - 1; // reset range\n\n\t\t}\n\n\t}\n\n\t//\n\n\tfunction get( attribute ) {\n\n\t\tif ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;\n\n\t\treturn buffers.get( attribute );\n\n\t}\n\n\tfunction remove( attribute ) {\n\n\t\tif ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;\n\n\t\tconst data = buffers.get( attribute );\n\n\t\tif ( data ) {\n\n\t\t\tgl.deleteBuffer( data.buffer );\n\n\t\t\tbuffers.delete( attribute );\n\n\t\t}\n\n\t}\n\n\tfunction update( attribute, bufferType ) {\n\n\t\tif ( attribute.isGLBufferAttribute ) {\n\n\t\t\tconst cached = buffers.get( attribute );\n\n\t\t\tif ( ! cached || cached.version < attribute.version ) {\n\n\t\t\t\tbuffers.set( attribute, {\n\t\t\t\t\tbuffer: attribute.buffer,\n\t\t\t\t\ttype: attribute.type,\n\t\t\t\t\tbytesPerElement: attribute.elementSize,\n\t\t\t\t\tversion: attribute.version\n\t\t\t\t} );\n\n\t\t\t}\n\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;\n\n\t\tconst data = buffers.get( attribute );\n\n\t\tif ( data === undefined ) {\n\n\t\t\tbuffers.set( attribute, createBuffer( attribute, bufferType ) );\n\n\t\t} else if ( data.version < attribute.version ) {\n\n\t\t\tupdateBuffer( data.buffer, attribute, bufferType );\n\n\t\t\tdata.version = attribute.version;\n\n\t\t}\n\n\t}\n\n\treturn {\n\n\t\tget: get,\n\t\tremove: remove,\n\t\tupdate: update\n\n\t};\n\n}\n\nclass PlaneBufferGeometry extends BufferGeometry {\n\n\tconstructor( width = 1, height = 1, widthSegments = 1, heightSegments = 1 ) {\n\n\t\tsuper();\n\t\tthis.type = 'PlaneBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\twidth: width,\n\t\t\theight: height,\n\t\t\twidthSegments: widthSegments,\n\t\t\theightSegments: heightSegments\n\t\t};\n\n\t\tconst width_half = width / 2;\n\t\tconst height_half = height / 2;\n\n\t\tconst gridX = Math.floor( widthSegments );\n\t\tconst gridY = Math.floor( heightSegments );\n\n\t\tconst gridX1 = gridX + 1;\n\t\tconst gridY1 = gridY + 1;\n\n\t\tconst segment_width = width / gridX;\n\t\tconst segment_height = height / gridY;\n\n\t\t//\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\tfor ( let iy = 0; iy < gridY1; iy ++ ) {\n\n\t\t\tconst y = iy * segment_height - height_half;\n\n\t\t\tfor ( let ix = 0; ix < gridX1; ix ++ ) {\n\n\t\t\t\tconst x = ix * segment_width - width_half;\n\n\t\t\t\tvertices.push( x, - y, 0 );\n\n\t\t\t\tnormals.push( 0, 0, 1 );\n\n\t\t\t\tuvs.push( ix / gridX );\n\t\t\t\tuvs.push( 1 - ( iy / gridY ) );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfor ( let iy = 0; iy < gridY; iy ++ ) {\n\n\t\t\tfor ( let ix = 0; ix < gridX; ix ++ ) {\n\n\t\t\t\tconst a = ix + gridX1 * iy;\n\t\t\t\tconst b = ix + gridX1 * ( iy + 1 );\n\t\t\t\tconst c = ( ix + 1 ) + gridX1 * ( iy + 1 );\n\t\t\t\tconst d = ( ix + 1 ) + gridX1 * iy;\n\n\t\t\t\tindices.push( a, b, d );\n\t\t\t\tindices.push( b, c, d );\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t}\n\n}\n\nvar alphamap_fragment = \"#ifdef USE_ALPHAMAP\\n\\tdiffuseColor.a *= texture2D( alphaMap, vUv ).g;\\n#endif\";\n\nvar alphamap_pars_fragment = \"#ifdef USE_ALPHAMAP\\n\\tuniform sampler2D alphaMap;\\n#endif\";\n\nvar alphatest_fragment = \"#ifdef ALPHATEST\\n\\tif ( diffuseColor.a < ALPHATEST ) discard;\\n#endif\";\n\nvar aomap_fragment = \"#ifdef USE_AOMAP\\n\\tfloat ambientOcclusion = ( texture2D( aoMap, vUv2 ).r - 1.0 ) * aoMapIntensity + 1.0;\\n\\treflectedLight.indirectDiffuse *= ambientOcclusion;\\n\\t#if defined( USE_ENVMAP ) && defined( STANDARD )\\n\\t\\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\\n\\t\\treflectedLight.indirectSpecular *= computeSpecularOcclusion( dotNV, ambientOcclusion, material.specularRoughness );\\n\\t#endif\\n#endif\";\n\nvar aomap_pars_fragment = \"#ifdef USE_AOMAP\\n\\tuniform sampler2D aoMap;\\n\\tuniform float aoMapIntensity;\\n#endif\";\n\nvar begin_vertex = \"vec3 transformed = vec3( position );\";\n\nvar beginnormal_vertex = \"vec3 objectNormal = vec3( normal );\\n#ifdef USE_TANGENT\\n\\tvec3 objectTangent = vec3( tangent.xyz );\\n#endif\";\n\nvar bsdfs = \"vec2 integrateSpecularBRDF( const in float dotNV, const in float roughness ) {\\n\\tconst vec4 c0 = vec4( - 1, - 0.0275, - 0.572, 0.022 );\\n\\tconst vec4 c1 = vec4( 1, 0.0425, 1.04, - 0.04 );\\n\\tvec4 r = roughness * c0 + c1;\\n\\tfloat a004 = min( r.x * r.x, exp2( - 9.28 * dotNV ) ) * r.x + r.y;\\n\\treturn vec2( -1.04, 1.04 ) * a004 + r.zw;\\n}\\nfloat punctualLightIntensityToIrradianceFactor( const in float lightDistance, const in float cutoffDistance, const in float decayExponent ) {\\n#if defined ( PHYSICALLY_CORRECT_LIGHTS )\\n\\tfloat distanceFalloff = 1.0 / max( pow( lightDistance, decayExponent ), 0.01 );\\n\\tif( cutoffDistance > 0.0 ) {\\n\\t\\tdistanceFalloff *= pow2( saturate( 1.0 - pow4( lightDistance / cutoffDistance ) ) );\\n\\t}\\n\\treturn distanceFalloff;\\n#else\\n\\tif( cutoffDistance > 0.0 && decayExponent > 0.0 ) {\\n\\t\\treturn pow( saturate( -lightDistance / cutoffDistance + 1.0 ), decayExponent );\\n\\t}\\n\\treturn 1.0;\\n#endif\\n}\\nvec3 BRDF_Diffuse_Lambert( const in vec3 diffuseColor ) {\\n\\treturn RECIPROCAL_PI * diffuseColor;\\n}\\nvec3 F_Schlick( const in vec3 specularColor, const in float dotLH ) {\\n\\tfloat fresnel = exp2( ( -5.55473 * dotLH - 6.98316 ) * dotLH );\\n\\treturn ( 1.0 - specularColor ) * fresnel + specularColor;\\n}\\nvec3 F_Schlick_RoughnessDependent( const in vec3 F0, const in float dotNV, const in float roughness ) {\\n\\tfloat fresnel = exp2( ( -5.55473 * dotNV - 6.98316 ) * dotNV );\\n\\tvec3 Fr = max( vec3( 1.0 - roughness ), F0 ) - F0;\\n\\treturn Fr * fresnel + F0;\\n}\\nfloat G_GGX_Smith( const in float alpha, const in float dotNL, const in float dotNV ) {\\n\\tfloat a2 = pow2( alpha );\\n\\tfloat gl = dotNL + sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\\n\\tfloat gv = dotNV + sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\\n\\treturn 1.0 / ( gl * gv );\\n}\\nfloat G_GGX_SmithCorrelated( const in float alpha, const in float dotNL, const in float dotNV ) {\\n\\tfloat a2 = pow2( alpha );\\n\\tfloat gv = dotNL * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\\n\\tfloat gl = dotNV * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\\n\\treturn 0.5 / max( gv + gl, EPSILON );\\n}\\nfloat D_GGX( const in float alpha, const in float dotNH ) {\\n\\tfloat a2 = pow2( alpha );\\n\\tfloat denom = pow2( dotNH ) * ( a2 - 1.0 ) + 1.0;\\n\\treturn RECIPROCAL_PI * a2 / pow2( denom );\\n}\\nvec3 BRDF_Specular_GGX( const in IncidentLight incidentLight, const in vec3 viewDir, const in vec3 normal, const in vec3 specularColor, const in float roughness ) {\\n\\tfloat alpha = pow2( roughness );\\n\\tvec3 halfDir = normalize( incidentLight.direction + viewDir );\\n\\tfloat dotNL = saturate( dot( normal, incidentLight.direction ) );\\n\\tfloat dotNV = saturate( dot( normal, viewDir ) );\\n\\tfloat dotNH = saturate( dot( normal, halfDir ) );\\n\\tfloat dotLH = saturate( dot( incidentLight.direction, halfDir ) );\\n\\tvec3 F = F_Schlick( specularColor, dotLH );\\n\\tfloat G = G_GGX_SmithCorrelated( alpha, dotNL, dotNV );\\n\\tfloat D = D_GGX( alpha, dotNH );\\n\\treturn F * ( G * D );\\n}\\nvec2 LTC_Uv( const in vec3 N, const in vec3 V, const in float roughness ) {\\n\\tconst float LUT_SIZE = 64.0;\\n\\tconst float LUT_SCALE = ( LUT_SIZE - 1.0 ) / LUT_SIZE;\\n\\tconst float LUT_BIAS = 0.5 / LUT_SIZE;\\n\\tfloat dotNV = saturate( dot( N, V ) );\\n\\tvec2 uv = vec2( roughness, sqrt( 1.0 - dotNV ) );\\n\\tuv = uv * LUT_SCALE + LUT_BIAS;\\n\\treturn uv;\\n}\\nfloat LTC_ClippedSphereFormFactor( const in vec3 f ) {\\n\\tfloat l = length( f );\\n\\treturn max( ( l * l + f.z ) / ( l + 1.0 ), 0.0 );\\n}\\nvec3 LTC_EdgeVectorFormFactor( const in vec3 v1, const in vec3 v2 ) {\\n\\tfloat x = dot( v1, v2 );\\n\\tfloat y = abs( x );\\n\\tfloat a = 0.8543985 + ( 0.4965155 + 0.0145206 * y ) * y;\\n\\tfloat b = 3.4175940 + ( 4.1616724 + y ) * y;\\n\\tfloat v = a / b;\\n\\tfloat theta_sintheta = ( x > 0.0 ) ? v : 0.5 * inversesqrt( max( 1.0 - x * x, 1e-7 ) ) - v;\\n\\treturn cross( v1, v2 ) * theta_sintheta;\\n}\\nvec3 LTC_Evaluate( const in vec3 N, const in vec3 V, const in vec3 P, const in mat3 mInv, const in vec3 rectCoords[ 4 ] ) {\\n\\tvec3 v1 = rectCoords[ 1 ] - rectCoords[ 0 ];\\n\\tvec3 v2 = rectCoords[ 3 ] - rectCoords[ 0 ];\\n\\tvec3 lightNormal = cross( v1, v2 );\\n\\tif( dot( lightNormal, P - rectCoords[ 0 ] ) < 0.0 ) return vec3( 0.0 );\\n\\tvec3 T1, T2;\\n\\tT1 = normalize( V - N * dot( V, N ) );\\n\\tT2 = - cross( N, T1 );\\n\\tmat3 mat = mInv * transposeMat3( mat3( T1, T2, N ) );\\n\\tvec3 coords[ 4 ];\\n\\tcoords[ 0 ] = mat * ( rectCoords[ 0 ] - P );\\n\\tcoords[ 1 ] = mat * ( rectCoords[ 1 ] - P );\\n\\tcoords[ 2 ] = mat * ( rectCoords[ 2 ] - P );\\n\\tcoords[ 3 ] = mat * ( rectCoords[ 3 ] - P );\\n\\tcoords[ 0 ] = normalize( coords[ 0 ] );\\n\\tcoords[ 1 ] = normalize( coords[ 1 ] );\\n\\tcoords[ 2 ] = normalize( coords[ 2 ] );\\n\\tcoords[ 3 ] = normalize( coords[ 3 ] );\\n\\tvec3 vectorFormFactor = vec3( 0.0 );\\n\\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 0 ], coords[ 1 ] );\\n\\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 1 ], coords[ 2 ] );\\n\\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 2 ], coords[ 3 ] );\\n\\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 3 ], coords[ 0 ] );\\n\\tfloat result = LTC_ClippedSphereFormFactor( vectorFormFactor );\\n\\treturn vec3( result );\\n}\\nvec3 BRDF_Specular_GGX_Environment( const in vec3 viewDir, const in vec3 normal, const in vec3 specularColor, const in float roughness ) {\\n\\tfloat dotNV = saturate( dot( normal, viewDir ) );\\n\\tvec2 brdf = integrateSpecularBRDF( dotNV, roughness );\\n\\treturn specularColor * brdf.x + brdf.y;\\n}\\nvoid BRDF_Specular_Multiscattering_Environment( const in GeometricContext geometry, const in vec3 specularColor, const in float roughness, inout vec3 singleScatter, inout vec3 multiScatter ) {\\n\\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\\n\\tvec3 F = F_Schlick_RoughnessDependent( specularColor, dotNV, roughness );\\n\\tvec2 brdf = integrateSpecularBRDF( dotNV, roughness );\\n\\tvec3 FssEss = F * brdf.x + brdf.y;\\n\\tfloat Ess = brdf.x + brdf.y;\\n\\tfloat Ems = 1.0 - Ess;\\n\\tvec3 Favg = specularColor + ( 1.0 - specularColor ) * 0.047619;\\tvec3 Fms = FssEss * Favg / ( 1.0 - Ems * Favg );\\n\\tsingleScatter += FssEss;\\n\\tmultiScatter += Fms * Ems;\\n}\\nfloat G_BlinnPhong_Implicit( ) {\\n\\treturn 0.25;\\n}\\nfloat D_BlinnPhong( const in float shininess, const in float dotNH ) {\\n\\treturn RECIPROCAL_PI * ( shininess * 0.5 + 1.0 ) * pow( dotNH, shininess );\\n}\\nvec3 BRDF_Specular_BlinnPhong( const in IncidentLight incidentLight, const in GeometricContext geometry, const in vec3 specularColor, const in float shininess ) {\\n\\tvec3 halfDir = normalize( incidentLight.direction + geometry.viewDir );\\n\\tfloat dotNH = saturate( dot( geometry.normal, halfDir ) );\\n\\tfloat dotLH = saturate( dot( incidentLight.direction, halfDir ) );\\n\\tvec3 F = F_Schlick( specularColor, dotLH );\\n\\tfloat G = G_BlinnPhong_Implicit( );\\n\\tfloat D = D_BlinnPhong( shininess, dotNH );\\n\\treturn F * ( G * D );\\n}\\nfloat GGXRoughnessToBlinnExponent( const in float ggxRoughness ) {\\n\\treturn ( 2.0 / pow2( ggxRoughness + 0.0001 ) - 2.0 );\\n}\\nfloat BlinnExponentToGGXRoughness( const in float blinnExponent ) {\\n\\treturn sqrt( 2.0 / ( blinnExponent + 2.0 ) );\\n}\\n#if defined( USE_SHEEN )\\nfloat D_Charlie(float roughness, float NoH) {\\n\\tfloat invAlpha = 1.0 / roughness;\\n\\tfloat cos2h = NoH * NoH;\\n\\tfloat sin2h = max(1.0 - cos2h, 0.0078125);\\treturn (2.0 + invAlpha) * pow(sin2h, invAlpha * 0.5) / (2.0 * PI);\\n}\\nfloat V_Neubelt(float NoV, float NoL) {\\n\\treturn saturate(1.0 / (4.0 * (NoL + NoV - NoL * NoV)));\\n}\\nvec3 BRDF_Specular_Sheen( const in float roughness, const in vec3 L, const in GeometricContext geometry, vec3 specularColor ) {\\n\\tvec3 N = geometry.normal;\\n\\tvec3 V = geometry.viewDir;\\n\\tvec3 H = normalize( V + L );\\n\\tfloat dotNH = saturate( dot( N, H ) );\\n\\treturn specularColor * D_Charlie( roughness, dotNH ) * V_Neubelt( dot(N, V), dot(N, L) );\\n}\\n#endif\";\n\nvar bumpmap_pars_fragment = \"#ifdef USE_BUMPMAP\\n\\tuniform sampler2D bumpMap;\\n\\tuniform float bumpScale;\\n\\tvec2 dHdxy_fwd() {\\n\\t\\tvec2 dSTdx = dFdx( vUv );\\n\\t\\tvec2 dSTdy = dFdy( vUv );\\n\\t\\tfloat Hll = bumpScale * texture2D( bumpMap, vUv ).x;\\n\\t\\tfloat dBx = bumpScale * texture2D( bumpMap, vUv + dSTdx ).x - Hll;\\n\\t\\tfloat dBy = bumpScale * texture2D( bumpMap, vUv + dSTdy ).x - Hll;\\n\\t\\treturn vec2( dBx, dBy );\\n\\t}\\n\\tvec3 perturbNormalArb( vec3 surf_pos, vec3 surf_norm, vec2 dHdxy ) {\\n\\t\\tvec3 vSigmaX = vec3( dFdx( surf_pos.x ), dFdx( surf_pos.y ), dFdx( surf_pos.z ) );\\n\\t\\tvec3 vSigmaY = vec3( dFdy( surf_pos.x ), dFdy( surf_pos.y ), dFdy( surf_pos.z ) );\\n\\t\\tvec3 vN = surf_norm;\\n\\t\\tvec3 R1 = cross( vSigmaY, vN );\\n\\t\\tvec3 R2 = cross( vN, vSigmaX );\\n\\t\\tfloat fDet = dot( vSigmaX, R1 );\\n\\t\\tfDet *= ( float( gl_FrontFacing ) * 2.0 - 1.0 );\\n\\t\\tvec3 vGrad = sign( fDet ) * ( dHdxy.x * R1 + dHdxy.y * R2 );\\n\\t\\treturn normalize( abs( fDet ) * surf_norm - vGrad );\\n\\t}\\n#endif\";\n\nvar clipping_planes_fragment = \"#if NUM_CLIPPING_PLANES > 0\\n\\tvec4 plane;\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < UNION_CLIPPING_PLANES; i ++ ) {\\n\\t\\tplane = clippingPlanes[ i ];\\n\\t\\tif ( dot( vClipPosition, plane.xyz ) > plane.w ) discard;\\n\\t}\\n\\t#pragma unroll_loop_end\\n\\t#if UNION_CLIPPING_PLANES < NUM_CLIPPING_PLANES\\n\\t\\tbool clipped = true;\\n\\t\\t#pragma unroll_loop_start\\n\\t\\tfor ( int i = UNION_CLIPPING_PLANES; i < NUM_CLIPPING_PLANES; i ++ ) {\\n\\t\\t\\tplane = clippingPlanes[ i ];\\n\\t\\t\\tclipped = ( dot( vClipPosition, plane.xyz ) > plane.w ) && clipped;\\n\\t\\t}\\n\\t\\t#pragma unroll_loop_end\\n\\t\\tif ( clipped ) discard;\\n\\t#endif\\n#endif\";\n\nvar clipping_planes_pars_fragment = \"#if NUM_CLIPPING_PLANES > 0\\n\\tvarying vec3 vClipPosition;\\n\\tuniform vec4 clippingPlanes[ NUM_CLIPPING_PLANES ];\\n#endif\";\n\nvar clipping_planes_pars_vertex = \"#if NUM_CLIPPING_PLANES > 0\\n\\tvarying vec3 vClipPosition;\\n#endif\";\n\nvar clipping_planes_vertex = \"#if NUM_CLIPPING_PLANES > 0\\n\\tvClipPosition = - mvPosition.xyz;\\n#endif\";\n\nvar color_fragment = \"#ifdef USE_COLOR\\n\\tdiffuseColor.rgb *= vColor;\\n#endif\";\n\nvar color_pars_fragment = \"#ifdef USE_COLOR\\n\\tvarying vec3 vColor;\\n#endif\";\n\nvar color_pars_vertex = \"#if defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR )\\n\\tvarying vec3 vColor;\\n#endif\";\n\nvar color_vertex = \"#if defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR )\\n\\tvColor = vec3( 1.0 );\\n#endif\\n#ifdef USE_COLOR\\n\\tvColor.xyz *= color.xyz;\\n#endif\\n#ifdef USE_INSTANCING_COLOR\\n\\tvColor.xyz *= instanceColor.xyz;\\n#endif\";\n\nvar common = \"#define PI 3.141592653589793\\n#define PI2 6.283185307179586\\n#define PI_HALF 1.5707963267948966\\n#define RECIPROCAL_PI 0.3183098861837907\\n#define RECIPROCAL_PI2 0.15915494309189535\\n#define EPSILON 1e-6\\n#ifndef saturate\\n#define saturate(a) clamp( a, 0.0, 1.0 )\\n#endif\\n#define whiteComplement(a) ( 1.0 - saturate( a ) )\\nfloat pow2( const in float x ) { return x*x; }\\nfloat pow3( const in float x ) { return x*x*x; }\\nfloat pow4( const in float x ) { float x2 = x*x; return x2*x2; }\\nfloat average( const in vec3 color ) { return dot( color, vec3( 0.3333 ) ); }\\nhighp float rand( const in vec2 uv ) {\\n\\tconst highp float a = 12.9898, b = 78.233, c = 43758.5453;\\n\\thighp float dt = dot( uv.xy, vec2( a,b ) ), sn = mod( dt, PI );\\n\\treturn fract(sin(sn) * c);\\n}\\n#ifdef HIGH_PRECISION\\n\\tfloat precisionSafeLength( vec3 v ) { return length( v ); }\\n#else\\n\\tfloat max3( vec3 v ) { return max( max( v.x, v.y ), v.z ); }\\n\\tfloat precisionSafeLength( vec3 v ) {\\n\\t\\tfloat maxComponent = max3( abs( v ) );\\n\\t\\treturn length( v / maxComponent ) * maxComponent;\\n\\t}\\n#endif\\nstruct IncidentLight {\\n\\tvec3 color;\\n\\tvec3 direction;\\n\\tbool visible;\\n};\\nstruct ReflectedLight {\\n\\tvec3 directDiffuse;\\n\\tvec3 directSpecular;\\n\\tvec3 indirectDiffuse;\\n\\tvec3 indirectSpecular;\\n};\\nstruct GeometricContext {\\n\\tvec3 position;\\n\\tvec3 normal;\\n\\tvec3 viewDir;\\n#ifdef CLEARCOAT\\n\\tvec3 clearcoatNormal;\\n#endif\\n};\\nvec3 transformDirection( in vec3 dir, in mat4 matrix ) {\\n\\treturn normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );\\n}\\nvec3 inverseTransformDirection( in vec3 dir, in mat4 matrix ) {\\n\\treturn normalize( ( vec4( dir, 0.0 ) * matrix ).xyz );\\n}\\nvec3 projectOnPlane(in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {\\n\\tfloat distance = dot( planeNormal, point - pointOnPlane );\\n\\treturn - distance * planeNormal + point;\\n}\\nfloat sideOfPlane( in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {\\n\\treturn sign( dot( point - pointOnPlane, planeNormal ) );\\n}\\nvec3 linePlaneIntersect( in vec3 pointOnLine, in vec3 lineDirection, in vec3 pointOnPlane, in vec3 planeNormal ) {\\n\\treturn lineDirection * ( dot( planeNormal, pointOnPlane - pointOnLine ) / dot( planeNormal, lineDirection ) ) + pointOnLine;\\n}\\nmat3 transposeMat3( const in mat3 m ) {\\n\\tmat3 tmp;\\n\\ttmp[ 0 ] = vec3( m[ 0 ].x, m[ 1 ].x, m[ 2 ].x );\\n\\ttmp[ 1 ] = vec3( m[ 0 ].y, m[ 1 ].y, m[ 2 ].y );\\n\\ttmp[ 2 ] = vec3( m[ 0 ].z, m[ 1 ].z, m[ 2 ].z );\\n\\treturn tmp;\\n}\\nfloat linearToRelativeLuminance( const in vec3 color ) {\\n\\tvec3 weights = vec3( 0.2126, 0.7152, 0.0722 );\\n\\treturn dot( weights, color.rgb );\\n}\\nbool isPerspectiveMatrix( mat4 m ) {\\n\\treturn m[ 2 ][ 3 ] == - 1.0;\\n}\\nvec2 equirectUv( in vec3 dir ) {\\n\\tfloat u = atan( dir.z, dir.x ) * RECIPROCAL_PI2 + 0.5;\\n\\tfloat v = asin( clamp( dir.y, - 1.0, 1.0 ) ) * RECIPROCAL_PI + 0.5;\\n\\treturn vec2( u, v );\\n}\";\n\nvar cube_uv_reflection_fragment = \"#ifdef ENVMAP_TYPE_CUBE_UV\\n\\t#define cubeUV_maxMipLevel 8.0\\n\\t#define cubeUV_minMipLevel 4.0\\n\\t#define cubeUV_maxTileSize 256.0\\n\\t#define cubeUV_minTileSize 16.0\\n\\tfloat getFace( vec3 direction ) {\\n\\t\\tvec3 absDirection = abs( direction );\\n\\t\\tfloat face = - 1.0;\\n\\t\\tif ( absDirection.x > absDirection.z ) {\\n\\t\\t\\tif ( absDirection.x > absDirection.y )\\n\\t\\t\\t\\tface = direction.x > 0.0 ? 0.0 : 3.0;\\n\\t\\t\\telse\\n\\t\\t\\t\\tface = direction.y > 0.0 ? 1.0 : 4.0;\\n\\t\\t} else {\\n\\t\\t\\tif ( absDirection.z > absDirection.y )\\n\\t\\t\\t\\tface = direction.z > 0.0 ? 2.0 : 5.0;\\n\\t\\t\\telse\\n\\t\\t\\t\\tface = direction.y > 0.0 ? 1.0 : 4.0;\\n\\t\\t}\\n\\t\\treturn face;\\n\\t}\\n\\tvec2 getUV( vec3 direction, float face ) {\\n\\t\\tvec2 uv;\\n\\t\\tif ( face == 0.0 ) {\\n\\t\\t\\tuv = vec2( direction.z, direction.y ) / abs( direction.x );\\n\\t\\t} else if ( face == 1.0 ) {\\n\\t\\t\\tuv = vec2( - direction.x, - direction.z ) / abs( direction.y );\\n\\t\\t} else if ( face == 2.0 ) {\\n\\t\\t\\tuv = vec2( - direction.x, direction.y ) / abs( direction.z );\\n\\t\\t} else if ( face == 3.0 ) {\\n\\t\\t\\tuv = vec2( - direction.z, direction.y ) / abs( direction.x );\\n\\t\\t} else if ( face == 4.0 ) {\\n\\t\\t\\tuv = vec2( - direction.x, direction.z ) / abs( direction.y );\\n\\t\\t} else {\\n\\t\\t\\tuv = vec2( direction.x, direction.y ) / abs( direction.z );\\n\\t\\t}\\n\\t\\treturn 0.5 * ( uv + 1.0 );\\n\\t}\\n\\tvec3 bilinearCubeUV( sampler2D envMap, vec3 direction, float mipInt ) {\\n\\t\\tfloat face = getFace( direction );\\n\\t\\tfloat filterInt = max( cubeUV_minMipLevel - mipInt, 0.0 );\\n\\t\\tmipInt = max( mipInt, cubeUV_minMipLevel );\\n\\t\\tfloat faceSize = exp2( mipInt );\\n\\t\\tfloat texelSize = 1.0 / ( 3.0 * cubeUV_maxTileSize );\\n\\t\\tvec2 uv = getUV( direction, face ) * ( faceSize - 1.0 );\\n\\t\\tvec2 f = fract( uv );\\n\\t\\tuv += 0.5 - f;\\n\\t\\tif ( face > 2.0 ) {\\n\\t\\t\\tuv.y += faceSize;\\n\\t\\t\\tface -= 3.0;\\n\\t\\t}\\n\\t\\tuv.x += face * faceSize;\\n\\t\\tif ( mipInt < cubeUV_maxMipLevel ) {\\n\\t\\t\\tuv.y += 2.0 * cubeUV_maxTileSize;\\n\\t\\t}\\n\\t\\tuv.y += filterInt * 2.0 * cubeUV_minTileSize;\\n\\t\\tuv.x += 3.0 * max( 0.0, cubeUV_maxTileSize - 2.0 * faceSize );\\n\\t\\tuv *= texelSize;\\n\\t\\tvec3 tl = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\\n\\t\\tuv.x += texelSize;\\n\\t\\tvec3 tr = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\\n\\t\\tuv.y += texelSize;\\n\\t\\tvec3 br = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\\n\\t\\tuv.x -= texelSize;\\n\\t\\tvec3 bl = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\\n\\t\\tvec3 tm = mix( tl, tr, f.x );\\n\\t\\tvec3 bm = mix( bl, br, f.x );\\n\\t\\treturn mix( tm, bm, f.y );\\n\\t}\\n\\t#define r0 1.0\\n\\t#define v0 0.339\\n\\t#define m0 - 2.0\\n\\t#define r1 0.8\\n\\t#define v1 0.276\\n\\t#define m1 - 1.0\\n\\t#define r4 0.4\\n\\t#define v4 0.046\\n\\t#define m4 2.0\\n\\t#define r5 0.305\\n\\t#define v5 0.016\\n\\t#define m5 3.0\\n\\t#define r6 0.21\\n\\t#define v6 0.0038\\n\\t#define m6 4.0\\n\\tfloat roughnessToMip( float roughness ) {\\n\\t\\tfloat mip = 0.0;\\n\\t\\tif ( roughness >= r1 ) {\\n\\t\\t\\tmip = ( r0 - roughness ) * ( m1 - m0 ) / ( r0 - r1 ) + m0;\\n\\t\\t} else if ( roughness >= r4 ) {\\n\\t\\t\\tmip = ( r1 - roughness ) * ( m4 - m1 ) / ( r1 - r4 ) + m1;\\n\\t\\t} else if ( roughness >= r5 ) {\\n\\t\\t\\tmip = ( r4 - roughness ) * ( m5 - m4 ) / ( r4 - r5 ) + m4;\\n\\t\\t} else if ( roughness >= r6 ) {\\n\\t\\t\\tmip = ( r5 - roughness ) * ( m6 - m5 ) / ( r5 - r6 ) + m5;\\n\\t\\t} else {\\n\\t\\t\\tmip = - 2.0 * log2( 1.16 * roughness );\\t\\t}\\n\\t\\treturn mip;\\n\\t}\\n\\tvec4 textureCubeUV( sampler2D envMap, vec3 sampleDir, float roughness ) {\\n\\t\\tfloat mip = clamp( roughnessToMip( roughness ), m0, cubeUV_maxMipLevel );\\n\\t\\tfloat mipF = fract( mip );\\n\\t\\tfloat mipInt = floor( mip );\\n\\t\\tvec3 color0 = bilinearCubeUV( envMap, sampleDir, mipInt );\\n\\t\\tif ( mipF == 0.0 ) {\\n\\t\\t\\treturn vec4( color0, 1.0 );\\n\\t\\t} else {\\n\\t\\t\\tvec3 color1 = bilinearCubeUV( envMap, sampleDir, mipInt + 1.0 );\\n\\t\\t\\treturn vec4( mix( color0, color1, mipF ), 1.0 );\\n\\t\\t}\\n\\t}\\n#endif\";\n\nvar defaultnormal_vertex = \"vec3 transformedNormal = objectNormal;\\n#ifdef USE_INSTANCING\\n\\tmat3 m = mat3( instanceMatrix );\\n\\ttransformedNormal /= vec3( dot( m[ 0 ], m[ 0 ] ), dot( m[ 1 ], m[ 1 ] ), dot( m[ 2 ], m[ 2 ] ) );\\n\\ttransformedNormal = m * transformedNormal;\\n#endif\\ntransformedNormal = normalMatrix * transformedNormal;\\n#ifdef FLIP_SIDED\\n\\ttransformedNormal = - transformedNormal;\\n#endif\\n#ifdef USE_TANGENT\\n\\tvec3 transformedTangent = ( modelViewMatrix * vec4( objectTangent, 0.0 ) ).xyz;\\n\\t#ifdef FLIP_SIDED\\n\\t\\ttransformedTangent = - transformedTangent;\\n\\t#endif\\n#endif\";\n\nvar displacementmap_pars_vertex = \"#ifdef USE_DISPLACEMENTMAP\\n\\tuniform sampler2D displacementMap;\\n\\tuniform float displacementScale;\\n\\tuniform float displacementBias;\\n#endif\";\n\nvar displacementmap_vertex = \"#ifdef USE_DISPLACEMENTMAP\\n\\ttransformed += normalize( objectNormal ) * ( texture2D( displacementMap, vUv ).x * displacementScale + displacementBias );\\n#endif\";\n\nvar emissivemap_fragment = \"#ifdef USE_EMISSIVEMAP\\n\\tvec4 emissiveColor = texture2D( emissiveMap, vUv );\\n\\temissiveColor.rgb = emissiveMapTexelToLinear( emissiveColor ).rgb;\\n\\ttotalEmissiveRadiance *= emissiveColor.rgb;\\n#endif\";\n\nvar emissivemap_pars_fragment = \"#ifdef USE_EMISSIVEMAP\\n\\tuniform sampler2D emissiveMap;\\n#endif\";\n\nvar encodings_fragment = \"gl_FragColor = linearToOutputTexel( gl_FragColor );\";\n\nvar encodings_pars_fragment = \"\\nvec4 LinearToLinear( in vec4 value ) {\\n\\treturn value;\\n}\\nvec4 GammaToLinear( in vec4 value, in float gammaFactor ) {\\n\\treturn vec4( pow( value.rgb, vec3( gammaFactor ) ), value.a );\\n}\\nvec4 LinearToGamma( in vec4 value, in float gammaFactor ) {\\n\\treturn vec4( pow( value.rgb, vec3( 1.0 / gammaFactor ) ), value.a );\\n}\\nvec4 sRGBToLinear( in vec4 value ) {\\n\\treturn vec4( mix( pow( value.rgb * 0.9478672986 + vec3( 0.0521327014 ), vec3( 2.4 ) ), value.rgb * 0.0773993808, vec3( lessThanEqual( value.rgb, vec3( 0.04045 ) ) ) ), value.a );\\n}\\nvec4 LinearTosRGB( in vec4 value ) {\\n\\treturn vec4( mix( pow( value.rgb, vec3( 0.41666 ) ) * 1.055 - vec3( 0.055 ), value.rgb * 12.92, vec3( lessThanEqual( value.rgb, vec3( 0.0031308 ) ) ) ), value.a );\\n}\\nvec4 RGBEToLinear( in vec4 value ) {\\n\\treturn vec4( value.rgb * exp2( value.a * 255.0 - 128.0 ), 1.0 );\\n}\\nvec4 LinearToRGBE( in vec4 value ) {\\n\\tfloat maxComponent = max( max( value.r, value.g ), value.b );\\n\\tfloat fExp = clamp( ceil( log2( maxComponent ) ), -128.0, 127.0 );\\n\\treturn vec4( value.rgb / exp2( fExp ), ( fExp + 128.0 ) / 255.0 );\\n}\\nvec4 RGBMToLinear( in vec4 value, in float maxRange ) {\\n\\treturn vec4( value.rgb * value.a * maxRange, 1.0 );\\n}\\nvec4 LinearToRGBM( in vec4 value, in float maxRange ) {\\n\\tfloat maxRGB = max( value.r, max( value.g, value.b ) );\\n\\tfloat M = clamp( maxRGB / maxRange, 0.0, 1.0 );\\n\\tM = ceil( M * 255.0 ) / 255.0;\\n\\treturn vec4( value.rgb / ( M * maxRange ), M );\\n}\\nvec4 RGBDToLinear( in vec4 value, in float maxRange ) {\\n\\treturn vec4( value.rgb * ( ( maxRange / 255.0 ) / value.a ), 1.0 );\\n}\\nvec4 LinearToRGBD( in vec4 value, in float maxRange ) {\\n\\tfloat maxRGB = max( value.r, max( value.g, value.b ) );\\n\\tfloat D = max( maxRange / maxRGB, 1.0 );\\n\\tD = clamp( floor( D ) / 255.0, 0.0, 1.0 );\\n\\treturn vec4( value.rgb * ( D * ( 255.0 / maxRange ) ), D );\\n}\\nconst mat3 cLogLuvM = mat3( 0.2209, 0.3390, 0.4184, 0.1138, 0.6780, 0.7319, 0.0102, 0.1130, 0.2969 );\\nvec4 LinearToLogLuv( in vec4 value ) {\\n\\tvec3 Xp_Y_XYZp = cLogLuvM * value.rgb;\\n\\tXp_Y_XYZp = max( Xp_Y_XYZp, vec3( 1e-6, 1e-6, 1e-6 ) );\\n\\tvec4 vResult;\\n\\tvResult.xy = Xp_Y_XYZp.xy / Xp_Y_XYZp.z;\\n\\tfloat Le = 2.0 * log2(Xp_Y_XYZp.y) + 127.0;\\n\\tvResult.w = fract( Le );\\n\\tvResult.z = ( Le - ( floor( vResult.w * 255.0 ) ) / 255.0 ) / 255.0;\\n\\treturn vResult;\\n}\\nconst mat3 cLogLuvInverseM = mat3( 6.0014, -2.7008, -1.7996, -1.3320, 3.1029, -5.7721, 0.3008, -1.0882, 5.6268 );\\nvec4 LogLuvToLinear( in vec4 value ) {\\n\\tfloat Le = value.z * 255.0 + value.w;\\n\\tvec3 Xp_Y_XYZp;\\n\\tXp_Y_XYZp.y = exp2( ( Le - 127.0 ) / 2.0 );\\n\\tXp_Y_XYZp.z = Xp_Y_XYZp.y / value.y;\\n\\tXp_Y_XYZp.x = value.x * Xp_Y_XYZp.z;\\n\\tvec3 vRGB = cLogLuvInverseM * Xp_Y_XYZp.rgb;\\n\\treturn vec4( max( vRGB, 0.0 ), 1.0 );\\n}\";\n\nvar envmap_fragment = \"#ifdef USE_ENVMAP\\n\\t#ifdef ENV_WORLDPOS\\n\\t\\tvec3 cameraToFrag;\\n\\t\\tif ( isOrthographic ) {\\n\\t\\t\\tcameraToFrag = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\\n\\t\\t} else {\\n\\t\\t\\tcameraToFrag = normalize( vWorldPosition - cameraPosition );\\n\\t\\t}\\n\\t\\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\\n\\t\\t#ifdef ENVMAP_MODE_REFLECTION\\n\\t\\t\\tvec3 reflectVec = reflect( cameraToFrag, worldNormal );\\n\\t\\t#else\\n\\t\\t\\tvec3 reflectVec = refract( cameraToFrag, worldNormal, refractionRatio );\\n\\t\\t#endif\\n\\t#else\\n\\t\\tvec3 reflectVec = vReflect;\\n\\t#endif\\n\\t#ifdef ENVMAP_TYPE_CUBE\\n\\t\\tvec4 envColor = textureCube( envMap, vec3( flipEnvMap * reflectVec.x, reflectVec.yz ) );\\n\\t#elif defined( ENVMAP_TYPE_CUBE_UV )\\n\\t\\tvec4 envColor = textureCubeUV( envMap, reflectVec, 0.0 );\\n\\t#else\\n\\t\\tvec4 envColor = vec4( 0.0 );\\n\\t#endif\\n\\t#ifndef ENVMAP_TYPE_CUBE_UV\\n\\t\\tenvColor = envMapTexelToLinear( envColor );\\n\\t#endif\\n\\t#ifdef ENVMAP_BLENDING_MULTIPLY\\n\\t\\toutgoingLight = mix( outgoingLight, outgoingLight * envColor.xyz, specularStrength * reflectivity );\\n\\t#elif defined( ENVMAP_BLENDING_MIX )\\n\\t\\toutgoingLight = mix( outgoingLight, envColor.xyz, specularStrength * reflectivity );\\n\\t#elif defined( ENVMAP_BLENDING_ADD )\\n\\t\\toutgoingLight += envColor.xyz * specularStrength * reflectivity;\\n\\t#endif\\n#endif\";\n\nvar envmap_common_pars_fragment = \"#ifdef USE_ENVMAP\\n\\tuniform float envMapIntensity;\\n\\tuniform float flipEnvMap;\\n\\tuniform int maxMipLevel;\\n\\t#ifdef ENVMAP_TYPE_CUBE\\n\\t\\tuniform samplerCube envMap;\\n\\t#else\\n\\t\\tuniform sampler2D envMap;\\n\\t#endif\\n\\t\\n#endif\";\n\nvar envmap_pars_fragment = \"#ifdef USE_ENVMAP\\n\\tuniform float reflectivity;\\n\\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG )\\n\\t\\t#define ENV_WORLDPOS\\n\\t#endif\\n\\t#ifdef ENV_WORLDPOS\\n\\t\\tvarying vec3 vWorldPosition;\\n\\t\\tuniform float refractionRatio;\\n\\t#else\\n\\t\\tvarying vec3 vReflect;\\n\\t#endif\\n#endif\";\n\nvar envmap_pars_vertex = \"#ifdef USE_ENVMAP\\n\\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) ||defined( PHONG )\\n\\t\\t#define ENV_WORLDPOS\\n\\t#endif\\n\\t#ifdef ENV_WORLDPOS\\n\\t\\t\\n\\t\\tvarying vec3 vWorldPosition;\\n\\t#else\\n\\t\\tvarying vec3 vReflect;\\n\\t\\tuniform float refractionRatio;\\n\\t#endif\\n#endif\";\n\nvar envmap_vertex = \"#ifdef USE_ENVMAP\\n\\t#ifdef ENV_WORLDPOS\\n\\t\\tvWorldPosition = worldPosition.xyz;\\n\\t#else\\n\\t\\tvec3 cameraToVertex;\\n\\t\\tif ( isOrthographic ) {\\n\\t\\t\\tcameraToVertex = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\\n\\t\\t} else {\\n\\t\\t\\tcameraToVertex = normalize( worldPosition.xyz - cameraPosition );\\n\\t\\t}\\n\\t\\tvec3 worldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\\n\\t\\t#ifdef ENVMAP_MODE_REFLECTION\\n\\t\\t\\tvReflect = reflect( cameraToVertex, worldNormal );\\n\\t\\t#else\\n\\t\\t\\tvReflect = refract( cameraToVertex, worldNormal, refractionRatio );\\n\\t\\t#endif\\n\\t#endif\\n#endif\";\n\nvar fog_vertex = \"#ifdef USE_FOG\\n\\tfogDepth = - mvPosition.z;\\n#endif\";\n\nvar fog_pars_vertex = \"#ifdef USE_FOG\\n\\tvarying float fogDepth;\\n#endif\";\n\nvar fog_fragment = \"#ifdef USE_FOG\\n\\t#ifdef FOG_EXP2\\n\\t\\tfloat fogFactor = 1.0 - exp( - fogDensity * fogDensity * fogDepth * fogDepth );\\n\\t#else\\n\\t\\tfloat fogFactor = smoothstep( fogNear, fogFar, fogDepth );\\n\\t#endif\\n\\tgl_FragColor.rgb = mix( gl_FragColor.rgb, fogColor, fogFactor );\\n#endif\";\n\nvar fog_pars_fragment = \"#ifdef USE_FOG\\n\\tuniform vec3 fogColor;\\n\\tvarying float fogDepth;\\n\\t#ifdef FOG_EXP2\\n\\t\\tuniform float fogDensity;\\n\\t#else\\n\\t\\tuniform float fogNear;\\n\\t\\tuniform float fogFar;\\n\\t#endif\\n#endif\";\n\nvar gradientmap_pars_fragment = \"#ifdef USE_GRADIENTMAP\\n\\tuniform sampler2D gradientMap;\\n#endif\\nvec3 getGradientIrradiance( vec3 normal, vec3 lightDirection ) {\\n\\tfloat dotNL = dot( normal, lightDirection );\\n\\tvec2 coord = vec2( dotNL * 0.5 + 0.5, 0.0 );\\n\\t#ifdef USE_GRADIENTMAP\\n\\t\\treturn texture2D( gradientMap, coord ).rgb;\\n\\t#else\\n\\t\\treturn ( coord.x < 0.7 ) ? vec3( 0.7 ) : vec3( 1.0 );\\n\\t#endif\\n}\";\n\nvar lightmap_fragment = \"#ifdef USE_LIGHTMAP\\n\\tvec4 lightMapTexel= texture2D( lightMap, vUv2 );\\n\\treflectedLight.indirectDiffuse += PI * lightMapTexelToLinear( lightMapTexel ).rgb * lightMapIntensity;\\n#endif\";\n\nvar lightmap_pars_fragment = \"#ifdef USE_LIGHTMAP\\n\\tuniform sampler2D lightMap;\\n\\tuniform float lightMapIntensity;\\n#endif\";\n\nvar lights_lambert_vertex = \"vec3 diffuse = vec3( 1.0 );\\nGeometricContext geometry;\\ngeometry.position = mvPosition.xyz;\\ngeometry.normal = normalize( transformedNormal );\\ngeometry.viewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( -mvPosition.xyz );\\nGeometricContext backGeometry;\\nbackGeometry.position = geometry.position;\\nbackGeometry.normal = -geometry.normal;\\nbackGeometry.viewDir = geometry.viewDir;\\nvLightFront = vec3( 0.0 );\\nvIndirectFront = vec3( 0.0 );\\n#ifdef DOUBLE_SIDED\\n\\tvLightBack = vec3( 0.0 );\\n\\tvIndirectBack = vec3( 0.0 );\\n#endif\\nIncidentLight directLight;\\nfloat dotNL;\\nvec3 directLightColor_Diffuse;\\nvIndirectFront += getAmbientLightIrradiance( ambientLightColor );\\nvIndirectFront += getLightProbeIrradiance( lightProbe, geometry );\\n#ifdef DOUBLE_SIDED\\n\\tvIndirectBack += getAmbientLightIrradiance( ambientLightColor );\\n\\tvIndirectBack += getLightProbeIrradiance( lightProbe, backGeometry );\\n#endif\\n#if NUM_POINT_LIGHTS > 0\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\\n\\t\\tgetPointDirectLightIrradiance( pointLights[ i ], geometry, directLight );\\n\\t\\tdotNL = dot( geometry.normal, directLight.direction );\\n\\t\\tdirectLightColor_Diffuse = PI * directLight.color;\\n\\t\\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\\n\\t\\t#ifdef DOUBLE_SIDED\\n\\t\\t\\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\\n\\t\\t#endif\\n\\t}\\n\\t#pragma unroll_loop_end\\n#endif\\n#if NUM_SPOT_LIGHTS > 0\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\\n\\t\\tgetSpotDirectLightIrradiance( spotLights[ i ], geometry, directLight );\\n\\t\\tdotNL = dot( geometry.normal, directLight.direction );\\n\\t\\tdirectLightColor_Diffuse = PI * directLight.color;\\n\\t\\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\\n\\t\\t#ifdef DOUBLE_SIDED\\n\\t\\t\\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\\n\\t\\t#endif\\n\\t}\\n\\t#pragma unroll_loop_end\\n#endif\\n#if NUM_DIR_LIGHTS > 0\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\\n\\t\\tgetDirectionalDirectLightIrradiance( directionalLights[ i ], geometry, directLight );\\n\\t\\tdotNL = dot( geometry.normal, directLight.direction );\\n\\t\\tdirectLightColor_Diffuse = PI * directLight.color;\\n\\t\\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\\n\\t\\t#ifdef DOUBLE_SIDED\\n\\t\\t\\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\\n\\t\\t#endif\\n\\t}\\n\\t#pragma unroll_loop_end\\n#endif\\n#if NUM_HEMI_LIGHTS > 0\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\\n\\t\\tvIndirectFront += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry );\\n\\t\\t#ifdef DOUBLE_SIDED\\n\\t\\t\\tvIndirectBack += getHemisphereLightIrradiance( hemisphereLights[ i ], backGeometry );\\n\\t\\t#endif\\n\\t}\\n\\t#pragma unroll_loop_end\\n#endif\";\n\nvar lights_pars_begin = \"uniform bool receiveShadow;\\nuniform vec3 ambientLightColor;\\nuniform vec3 lightProbe[ 9 ];\\nvec3 shGetIrradianceAt( in vec3 normal, in vec3 shCoefficients[ 9 ] ) {\\n\\tfloat x = normal.x, y = normal.y, z = normal.z;\\n\\tvec3 result = shCoefficients[ 0 ] * 0.886227;\\n\\tresult += shCoefficients[ 1 ] * 2.0 * 0.511664 * y;\\n\\tresult += shCoefficients[ 2 ] * 2.0 * 0.511664 * z;\\n\\tresult += shCoefficients[ 3 ] * 2.0 * 0.511664 * x;\\n\\tresult += shCoefficients[ 4 ] * 2.0 * 0.429043 * x * y;\\n\\tresult += shCoefficients[ 5 ] * 2.0 * 0.429043 * y * z;\\n\\tresult += shCoefficients[ 6 ] * ( 0.743125 * z * z - 0.247708 );\\n\\tresult += shCoefficients[ 7 ] * 2.0 * 0.429043 * x * z;\\n\\tresult += shCoefficients[ 8 ] * 0.429043 * ( x * x - y * y );\\n\\treturn result;\\n}\\nvec3 getLightProbeIrradiance( const in vec3 lightProbe[ 9 ], const in GeometricContext geometry ) {\\n\\tvec3 worldNormal = inverseTransformDirection( geometry.normal, viewMatrix );\\n\\tvec3 irradiance = shGetIrradianceAt( worldNormal, lightProbe );\\n\\treturn irradiance;\\n}\\nvec3 getAmbientLightIrradiance( const in vec3 ambientLightColor ) {\\n\\tvec3 irradiance = ambientLightColor;\\n\\t#ifndef PHYSICALLY_CORRECT_LIGHTS\\n\\t\\tirradiance *= PI;\\n\\t#endif\\n\\treturn irradiance;\\n}\\n#if NUM_DIR_LIGHTS > 0\\n\\tstruct DirectionalLight {\\n\\t\\tvec3 direction;\\n\\t\\tvec3 color;\\n\\t};\\n\\tuniform DirectionalLight directionalLights[ NUM_DIR_LIGHTS ];\\n\\tvoid getDirectionalDirectLightIrradiance( const in DirectionalLight directionalLight, const in GeometricContext geometry, out IncidentLight directLight ) {\\n\\t\\tdirectLight.color = directionalLight.color;\\n\\t\\tdirectLight.direction = directionalLight.direction;\\n\\t\\tdirectLight.visible = true;\\n\\t}\\n#endif\\n#if NUM_POINT_LIGHTS > 0\\n\\tstruct PointLight {\\n\\t\\tvec3 position;\\n\\t\\tvec3 color;\\n\\t\\tfloat distance;\\n\\t\\tfloat decay;\\n\\t};\\n\\tuniform PointLight pointLights[ NUM_POINT_LIGHTS ];\\n\\tvoid getPointDirectLightIrradiance( const in PointLight pointLight, const in GeometricContext geometry, out IncidentLight directLight ) {\\n\\t\\tvec3 lVector = pointLight.position - geometry.position;\\n\\t\\tdirectLight.direction = normalize( lVector );\\n\\t\\tfloat lightDistance = length( lVector );\\n\\t\\tdirectLight.color = pointLight.color;\\n\\t\\tdirectLight.color *= punctualLightIntensityToIrradianceFactor( lightDistance, pointLight.distance, pointLight.decay );\\n\\t\\tdirectLight.visible = ( directLight.color != vec3( 0.0 ) );\\n\\t}\\n#endif\\n#if NUM_SPOT_LIGHTS > 0\\n\\tstruct SpotLight {\\n\\t\\tvec3 position;\\n\\t\\tvec3 direction;\\n\\t\\tvec3 color;\\n\\t\\tfloat distance;\\n\\t\\tfloat decay;\\n\\t\\tfloat coneCos;\\n\\t\\tfloat penumbraCos;\\n\\t};\\n\\tuniform SpotLight spotLights[ NUM_SPOT_LIGHTS ];\\n\\tvoid getSpotDirectLightIrradiance( const in SpotLight spotLight, const in GeometricContext geometry, out IncidentLight directLight ) {\\n\\t\\tvec3 lVector = spotLight.position - geometry.position;\\n\\t\\tdirectLight.direction = normalize( lVector );\\n\\t\\tfloat lightDistance = length( lVector );\\n\\t\\tfloat angleCos = dot( directLight.direction, spotLight.direction );\\n\\t\\tif ( angleCos > spotLight.coneCos ) {\\n\\t\\t\\tfloat spotEffect = smoothstep( spotLight.coneCos, spotLight.penumbraCos, angleCos );\\n\\t\\t\\tdirectLight.color = spotLight.color;\\n\\t\\t\\tdirectLight.color *= spotEffect * punctualLightIntensityToIrradianceFactor( lightDistance, spotLight.distance, spotLight.decay );\\n\\t\\t\\tdirectLight.visible = true;\\n\\t\\t} else {\\n\\t\\t\\tdirectLight.color = vec3( 0.0 );\\n\\t\\t\\tdirectLight.visible = false;\\n\\t\\t}\\n\\t}\\n#endif\\n#if NUM_RECT_AREA_LIGHTS > 0\\n\\tstruct RectAreaLight {\\n\\t\\tvec3 color;\\n\\t\\tvec3 position;\\n\\t\\tvec3 halfWidth;\\n\\t\\tvec3 halfHeight;\\n\\t};\\n\\tuniform sampler2D ltc_1;\\tuniform sampler2D ltc_2;\\n\\tuniform RectAreaLight rectAreaLights[ NUM_RECT_AREA_LIGHTS ];\\n#endif\\n#if NUM_HEMI_LIGHTS > 0\\n\\tstruct HemisphereLight {\\n\\t\\tvec3 direction;\\n\\t\\tvec3 skyColor;\\n\\t\\tvec3 groundColor;\\n\\t};\\n\\tuniform HemisphereLight hemisphereLights[ NUM_HEMI_LIGHTS ];\\n\\tvec3 getHemisphereLightIrradiance( const in HemisphereLight hemiLight, const in GeometricContext geometry ) {\\n\\t\\tfloat dotNL = dot( geometry.normal, hemiLight.direction );\\n\\t\\tfloat hemiDiffuseWeight = 0.5 * dotNL + 0.5;\\n\\t\\tvec3 irradiance = mix( hemiLight.groundColor, hemiLight.skyColor, hemiDiffuseWeight );\\n\\t\\t#ifndef PHYSICALLY_CORRECT_LIGHTS\\n\\t\\t\\tirradiance *= PI;\\n\\t\\t#endif\\n\\t\\treturn irradiance;\\n\\t}\\n#endif\";\n\nvar envmap_physical_pars_fragment = \"#if defined( USE_ENVMAP )\\n\\t#ifdef ENVMAP_MODE_REFRACTION\\n\\t\\tuniform float refractionRatio;\\n\\t#endif\\n\\tvec3 getLightProbeIndirectIrradiance( const in GeometricContext geometry, const in int maxMIPLevel ) {\\n\\t\\tvec3 worldNormal = inverseTransformDirection( geometry.normal, viewMatrix );\\n\\t\\t#ifdef ENVMAP_TYPE_CUBE\\n\\t\\t\\tvec3 queryVec = vec3( flipEnvMap * worldNormal.x, worldNormal.yz );\\n\\t\\t\\t#ifdef TEXTURE_LOD_EXT\\n\\t\\t\\t\\tvec4 envMapColor = textureCubeLodEXT( envMap, queryVec, float( maxMIPLevel ) );\\n\\t\\t\\t#else\\n\\t\\t\\t\\tvec4 envMapColor = textureCube( envMap, queryVec, float( maxMIPLevel ) );\\n\\t\\t\\t#endif\\n\\t\\t\\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\\n\\t\\t#elif defined( ENVMAP_TYPE_CUBE_UV )\\n\\t\\t\\tvec4 envMapColor = textureCubeUV( envMap, worldNormal, 1.0 );\\n\\t\\t#else\\n\\t\\t\\tvec4 envMapColor = vec4( 0.0 );\\n\\t\\t#endif\\n\\t\\treturn PI * envMapColor.rgb * envMapIntensity;\\n\\t}\\n\\tfloat getSpecularMIPLevel( const in float roughness, const in int maxMIPLevel ) {\\n\\t\\tfloat maxMIPLevelScalar = float( maxMIPLevel );\\n\\t\\tfloat sigma = PI * roughness * roughness / ( 1.0 + roughness );\\n\\t\\tfloat desiredMIPLevel = maxMIPLevelScalar + log2( sigma );\\n\\t\\treturn clamp( desiredMIPLevel, 0.0, maxMIPLevelScalar );\\n\\t}\\n\\tvec3 getLightProbeIndirectRadiance( const in vec3 viewDir, const in vec3 normal, const in float roughness, const in int maxMIPLevel ) {\\n\\t\\t#ifdef ENVMAP_MODE_REFLECTION\\n\\t\\t\\tvec3 reflectVec = reflect( -viewDir, normal );\\n\\t\\t\\treflectVec = normalize( mix( reflectVec, normal, roughness * roughness) );\\n\\t\\t#else\\n\\t\\t\\tvec3 reflectVec = refract( -viewDir, normal, refractionRatio );\\n\\t\\t#endif\\n\\t\\treflectVec = inverseTransformDirection( reflectVec, viewMatrix );\\n\\t\\tfloat specularMIPLevel = getSpecularMIPLevel( roughness, maxMIPLevel );\\n\\t\\t#ifdef ENVMAP_TYPE_CUBE\\n\\t\\t\\tvec3 queryReflectVec = vec3( flipEnvMap * reflectVec.x, reflectVec.yz );\\n\\t\\t\\t#ifdef TEXTURE_LOD_EXT\\n\\t\\t\\t\\tvec4 envMapColor = textureCubeLodEXT( envMap, queryReflectVec, specularMIPLevel );\\n\\t\\t\\t#else\\n\\t\\t\\t\\tvec4 envMapColor = textureCube( envMap, queryReflectVec, specularMIPLevel );\\n\\t\\t\\t#endif\\n\\t\\t\\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\\n\\t\\t#elif defined( ENVMAP_TYPE_CUBE_UV )\\n\\t\\t\\tvec4 envMapColor = textureCubeUV( envMap, reflectVec, roughness );\\n\\t\\t#endif\\n\\t\\treturn envMapColor.rgb * envMapIntensity;\\n\\t}\\n#endif\";\n\nvar lights_toon_fragment = \"ToonMaterial material;\\nmaterial.diffuseColor = diffuseColor.rgb;\";\n\nvar lights_toon_pars_fragment = \"varying vec3 vViewPosition;\\n#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n#endif\\nstruct ToonMaterial {\\n\\tvec3 diffuseColor;\\n};\\nvoid RE_Direct_Toon( const in IncidentLight directLight, const in GeometricContext geometry, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\\n\\tvec3 irradiance = getGradientIrradiance( geometry.normal, directLight.direction ) * directLight.color;\\n\\t#ifndef PHYSICALLY_CORRECT_LIGHTS\\n\\t\\tirradiance *= PI;\\n\\t#endif\\n\\treflectedLight.directDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\\n}\\nvoid RE_IndirectDiffuse_Toon( const in vec3 irradiance, const in GeometricContext geometry, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\\n\\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\\n}\\n#define RE_Direct\\t\\t\\t\\tRE_Direct_Toon\\n#define RE_IndirectDiffuse\\t\\tRE_IndirectDiffuse_Toon\\n#define Material_LightProbeLOD( material )\\t(0)\";\n\nvar lights_phong_fragment = \"BlinnPhongMaterial material;\\nmaterial.diffuseColor = diffuseColor.rgb;\\nmaterial.specularColor = specular;\\nmaterial.specularShininess = shininess;\\nmaterial.specularStrength = specularStrength;\";\n\nvar lights_phong_pars_fragment = \"varying vec3 vViewPosition;\\n#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n#endif\\nstruct BlinnPhongMaterial {\\n\\tvec3 diffuseColor;\\n\\tvec3 specularColor;\\n\\tfloat specularShininess;\\n\\tfloat specularStrength;\\n};\\nvoid RE_Direct_BlinnPhong( const in IncidentLight directLight, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\\n\\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\\n\\tvec3 irradiance = dotNL * directLight.color;\\n\\t#ifndef PHYSICALLY_CORRECT_LIGHTS\\n\\t\\tirradiance *= PI;\\n\\t#endif\\n\\treflectedLight.directDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\\n\\treflectedLight.directSpecular += irradiance * BRDF_Specular_BlinnPhong( directLight, geometry, material.specularColor, material.specularShininess ) * material.specularStrength;\\n}\\nvoid RE_IndirectDiffuse_BlinnPhong( const in vec3 irradiance, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\\n\\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\\n}\\n#define RE_Direct\\t\\t\\t\\tRE_Direct_BlinnPhong\\n#define RE_IndirectDiffuse\\t\\tRE_IndirectDiffuse_BlinnPhong\\n#define Material_LightProbeLOD( material )\\t(0)\";\n\nvar lights_physical_fragment = \"PhysicalMaterial material;\\nmaterial.diffuseColor = diffuseColor.rgb * ( 1.0 - metalnessFactor );\\nvec3 dxy = max( abs( dFdx( geometryNormal ) ), abs( dFdy( geometryNormal ) ) );\\nfloat geometryRoughness = max( max( dxy.x, dxy.y ), dxy.z );\\nmaterial.specularRoughness = max( roughnessFactor, 0.0525 );material.specularRoughness += geometryRoughness;\\nmaterial.specularRoughness = min( material.specularRoughness, 1.0 );\\n#ifdef REFLECTIVITY\\n\\tmaterial.specularColor = mix( vec3( MAXIMUM_SPECULAR_COEFFICIENT * pow2( reflectivity ) ), diffuseColor.rgb, metalnessFactor );\\n#else\\n\\tmaterial.specularColor = mix( vec3( DEFAULT_SPECULAR_COEFFICIENT ), diffuseColor.rgb, metalnessFactor );\\n#endif\\n#ifdef CLEARCOAT\\n\\tmaterial.clearcoat = clearcoat;\\n\\tmaterial.clearcoatRoughness = clearcoatRoughness;\\n\\t#ifdef USE_CLEARCOATMAP\\n\\t\\tmaterial.clearcoat *= texture2D( clearcoatMap, vUv ).x;\\n\\t#endif\\n\\t#ifdef USE_CLEARCOAT_ROUGHNESSMAP\\n\\t\\tmaterial.clearcoatRoughness *= texture2D( clearcoatRoughnessMap, vUv ).y;\\n\\t#endif\\n\\tmaterial.clearcoat = saturate( material.clearcoat );\\tmaterial.clearcoatRoughness = max( material.clearcoatRoughness, 0.0525 );\\n\\tmaterial.clearcoatRoughness += geometryRoughness;\\n\\tmaterial.clearcoatRoughness = min( material.clearcoatRoughness, 1.0 );\\n#endif\\n#ifdef USE_SHEEN\\n\\tmaterial.sheenColor = sheen;\\n#endif\";\n\nvar lights_physical_pars_fragment = \"struct PhysicalMaterial {\\n\\tvec3 diffuseColor;\\n\\tfloat specularRoughness;\\n\\tvec3 specularColor;\\n#ifdef CLEARCOAT\\n\\tfloat clearcoat;\\n\\tfloat clearcoatRoughness;\\n#endif\\n#ifdef USE_SHEEN\\n\\tvec3 sheenColor;\\n#endif\\n};\\n#define MAXIMUM_SPECULAR_COEFFICIENT 0.16\\n#define DEFAULT_SPECULAR_COEFFICIENT 0.04\\nfloat clearcoatDHRApprox( const in float roughness, const in float dotNL ) {\\n\\treturn DEFAULT_SPECULAR_COEFFICIENT + ( 1.0 - DEFAULT_SPECULAR_COEFFICIENT ) * ( pow( 1.0 - dotNL, 5.0 ) * pow( 1.0 - roughness, 2.0 ) );\\n}\\n#if NUM_RECT_AREA_LIGHTS > 0\\n\\tvoid RE_Direct_RectArea_Physical( const in RectAreaLight rectAreaLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\\n\\t\\tvec3 normal = geometry.normal;\\n\\t\\tvec3 viewDir = geometry.viewDir;\\n\\t\\tvec3 position = geometry.position;\\n\\t\\tvec3 lightPos = rectAreaLight.position;\\n\\t\\tvec3 halfWidth = rectAreaLight.halfWidth;\\n\\t\\tvec3 halfHeight = rectAreaLight.halfHeight;\\n\\t\\tvec3 lightColor = rectAreaLight.color;\\n\\t\\tfloat roughness = material.specularRoughness;\\n\\t\\tvec3 rectCoords[ 4 ];\\n\\t\\trectCoords[ 0 ] = lightPos + halfWidth - halfHeight;\\t\\trectCoords[ 1 ] = lightPos - halfWidth - halfHeight;\\n\\t\\trectCoords[ 2 ] = lightPos - halfWidth + halfHeight;\\n\\t\\trectCoords[ 3 ] = lightPos + halfWidth + halfHeight;\\n\\t\\tvec2 uv = LTC_Uv( normal, viewDir, roughness );\\n\\t\\tvec4 t1 = texture2D( ltc_1, uv );\\n\\t\\tvec4 t2 = texture2D( ltc_2, uv );\\n\\t\\tmat3 mInv = mat3(\\n\\t\\t\\tvec3( t1.x, 0, t1.y ),\\n\\t\\t\\tvec3(    0, 1,    0 ),\\n\\t\\t\\tvec3( t1.z, 0, t1.w )\\n\\t\\t);\\n\\t\\tvec3 fresnel = ( material.specularColor * t2.x + ( vec3( 1.0 ) - material.specularColor ) * t2.y );\\n\\t\\treflectedLight.directSpecular += lightColor * fresnel * LTC_Evaluate( normal, viewDir, position, mInv, rectCoords );\\n\\t\\treflectedLight.directDiffuse += lightColor * material.diffuseColor * LTC_Evaluate( normal, viewDir, position, mat3( 1.0 ), rectCoords );\\n\\t}\\n#endif\\nvoid RE_Direct_Physical( const in IncidentLight directLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\\n\\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\\n\\tvec3 irradiance = dotNL * directLight.color;\\n\\t#ifndef PHYSICALLY_CORRECT_LIGHTS\\n\\t\\tirradiance *= PI;\\n\\t#endif\\n\\t#ifdef CLEARCOAT\\n\\t\\tfloat ccDotNL = saturate( dot( geometry.clearcoatNormal, directLight.direction ) );\\n\\t\\tvec3 ccIrradiance = ccDotNL * directLight.color;\\n\\t\\t#ifndef PHYSICALLY_CORRECT_LIGHTS\\n\\t\\t\\tccIrradiance *= PI;\\n\\t\\t#endif\\n\\t\\tfloat clearcoatDHR = material.clearcoat * clearcoatDHRApprox( material.clearcoatRoughness, ccDotNL );\\n\\t\\treflectedLight.directSpecular += ccIrradiance * material.clearcoat * BRDF_Specular_GGX( directLight, geometry.viewDir, geometry.clearcoatNormal, vec3( DEFAULT_SPECULAR_COEFFICIENT ), material.clearcoatRoughness );\\n\\t#else\\n\\t\\tfloat clearcoatDHR = 0.0;\\n\\t#endif\\n\\t#ifdef USE_SHEEN\\n\\t\\treflectedLight.directSpecular += ( 1.0 - clearcoatDHR ) * irradiance * BRDF_Specular_Sheen(\\n\\t\\t\\tmaterial.specularRoughness,\\n\\t\\t\\tdirectLight.direction,\\n\\t\\t\\tgeometry,\\n\\t\\t\\tmaterial.sheenColor\\n\\t\\t);\\n\\t#else\\n\\t\\treflectedLight.directSpecular += ( 1.0 - clearcoatDHR ) * irradiance * BRDF_Specular_GGX( directLight, geometry.viewDir, geometry.normal, material.specularColor, material.specularRoughness);\\n\\t#endif\\n\\treflectedLight.directDiffuse += ( 1.0 - clearcoatDHR ) * irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\\n}\\nvoid RE_IndirectDiffuse_Physical( const in vec3 irradiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\\n\\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\\n}\\nvoid RE_IndirectSpecular_Physical( const in vec3 radiance, const in vec3 irradiance, const in vec3 clearcoatRadiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight) {\\n\\t#ifdef CLEARCOAT\\n\\t\\tfloat ccDotNV = saturate( dot( geometry.clearcoatNormal, geometry.viewDir ) );\\n\\t\\treflectedLight.indirectSpecular += clearcoatRadiance * material.clearcoat * BRDF_Specular_GGX_Environment( geometry.viewDir, geometry.clearcoatNormal, vec3( DEFAULT_SPECULAR_COEFFICIENT ), material.clearcoatRoughness );\\n\\t\\tfloat ccDotNL = ccDotNV;\\n\\t\\tfloat clearcoatDHR = material.clearcoat * clearcoatDHRApprox( material.clearcoatRoughness, ccDotNL );\\n\\t#else\\n\\t\\tfloat clearcoatDHR = 0.0;\\n\\t#endif\\n\\tfloat clearcoatInv = 1.0 - clearcoatDHR;\\n\\tvec3 singleScattering = vec3( 0.0 );\\n\\tvec3 multiScattering = vec3( 0.0 );\\n\\tvec3 cosineWeightedIrradiance = irradiance * RECIPROCAL_PI;\\n\\tBRDF_Specular_Multiscattering_Environment( geometry, material.specularColor, material.specularRoughness, singleScattering, multiScattering );\\n\\tvec3 diffuse = material.diffuseColor * ( 1.0 - ( singleScattering + multiScattering ) );\\n\\treflectedLight.indirectSpecular += clearcoatInv * radiance * singleScattering;\\n\\treflectedLight.indirectSpecular += multiScattering * cosineWeightedIrradiance;\\n\\treflectedLight.indirectDiffuse += diffuse * cosineWeightedIrradiance;\\n}\\n#define RE_Direct\\t\\t\\t\\tRE_Direct_Physical\\n#define RE_Direct_RectArea\\t\\tRE_Direct_RectArea_Physical\\n#define RE_IndirectDiffuse\\t\\tRE_IndirectDiffuse_Physical\\n#define RE_IndirectSpecular\\t\\tRE_IndirectSpecular_Physical\\nfloat computeSpecularOcclusion( const in float dotNV, const in float ambientOcclusion, const in float roughness ) {\\n\\treturn saturate( pow( dotNV + ambientOcclusion, exp2( - 16.0 * roughness - 1.0 ) ) - 1.0 + ambientOcclusion );\\n}\";\n\nvar lights_fragment_begin = \"\\nGeometricContext geometry;\\ngeometry.position = - vViewPosition;\\ngeometry.normal = normal;\\ngeometry.viewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( vViewPosition );\\n#ifdef CLEARCOAT\\n\\tgeometry.clearcoatNormal = clearcoatNormal;\\n#endif\\nIncidentLight directLight;\\n#if ( NUM_POINT_LIGHTS > 0 ) && defined( RE_Direct )\\n\\tPointLight pointLight;\\n\\t#if defined( USE_SHADOWMAP ) && NUM_POINT_LIGHT_SHADOWS > 0\\n\\tPointLightShadow pointLightShadow;\\n\\t#endif\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\\n\\t\\tpointLight = pointLights[ i ];\\n\\t\\tgetPointDirectLightIrradiance( pointLight, geometry, directLight );\\n\\t\\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_POINT_LIGHT_SHADOWS )\\n\\t\\tpointLightShadow = pointLightShadows[ i ];\\n\\t\\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getPointShadow( pointShadowMap[ i ], pointLightShadow.shadowMapSize, pointLightShadow.shadowBias, pointLightShadow.shadowRadius, vPointShadowCoord[ i ], pointLightShadow.shadowCameraNear, pointLightShadow.shadowCameraFar ) : 1.0;\\n\\t\\t#endif\\n\\t\\tRE_Direct( directLight, geometry, material, reflectedLight );\\n\\t}\\n\\t#pragma unroll_loop_end\\n#endif\\n#if ( NUM_SPOT_LIGHTS > 0 ) && defined( RE_Direct )\\n\\tSpotLight spotLight;\\n\\t#if defined( USE_SHADOWMAP ) && NUM_SPOT_LIGHT_SHADOWS > 0\\n\\tSpotLightShadow spotLightShadow;\\n\\t#endif\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\\n\\t\\tspotLight = spotLights[ i ];\\n\\t\\tgetSpotDirectLightIrradiance( spotLight, geometry, directLight );\\n\\t\\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )\\n\\t\\tspotLightShadow = spotLightShadows[ i ];\\n\\t\\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getShadow( spotShadowMap[ i ], spotLightShadow.shadowMapSize, spotLightShadow.shadowBias, spotLightShadow.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\\n\\t\\t#endif\\n\\t\\tRE_Direct( directLight, geometry, material, reflectedLight );\\n\\t}\\n\\t#pragma unroll_loop_end\\n#endif\\n#if ( NUM_DIR_LIGHTS > 0 ) && defined( RE_Direct )\\n\\tDirectionalLight directionalLight;\\n\\t#if defined( USE_SHADOWMAP ) && NUM_DIR_LIGHT_SHADOWS > 0\\n\\tDirectionalLightShadow directionalLightShadow;\\n\\t#endif\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\\n\\t\\tdirectionalLight = directionalLights[ i ];\\n\\t\\tgetDirectionalDirectLightIrradiance( directionalLight, geometry, directLight );\\n\\t\\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_DIR_LIGHT_SHADOWS )\\n\\t\\tdirectionalLightShadow = directionalLightShadows[ i ];\\n\\t\\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getShadow( directionalShadowMap[ i ], directionalLightShadow.shadowMapSize, directionalLightShadow.shadowBias, directionalLightShadow.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\\n\\t\\t#endif\\n\\t\\tRE_Direct( directLight, geometry, material, reflectedLight );\\n\\t}\\n\\t#pragma unroll_loop_end\\n#endif\\n#if ( NUM_RECT_AREA_LIGHTS > 0 ) && defined( RE_Direct_RectArea )\\n\\tRectAreaLight rectAreaLight;\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_RECT_AREA_LIGHTS; i ++ ) {\\n\\t\\trectAreaLight = rectAreaLights[ i ];\\n\\t\\tRE_Direct_RectArea( rectAreaLight, geometry, material, reflectedLight );\\n\\t}\\n\\t#pragma unroll_loop_end\\n#endif\\n#if defined( RE_IndirectDiffuse )\\n\\tvec3 iblIrradiance = vec3( 0.0 );\\n\\tvec3 irradiance = getAmbientLightIrradiance( ambientLightColor );\\n\\tirradiance += getLightProbeIrradiance( lightProbe, geometry );\\n\\t#if ( NUM_HEMI_LIGHTS > 0 )\\n\\t\\t#pragma unroll_loop_start\\n\\t\\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\\n\\t\\t\\tirradiance += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry );\\n\\t\\t}\\n\\t\\t#pragma unroll_loop_end\\n\\t#endif\\n#endif\\n#if defined( RE_IndirectSpecular )\\n\\tvec3 radiance = vec3( 0.0 );\\n\\tvec3 clearcoatRadiance = vec3( 0.0 );\\n#endif\";\n\nvar lights_fragment_maps = \"#if defined( RE_IndirectDiffuse )\\n\\t#ifdef USE_LIGHTMAP\\n\\t\\tvec4 lightMapTexel= texture2D( lightMap, vUv2 );\\n\\t\\tvec3 lightMapIrradiance = lightMapTexelToLinear( lightMapTexel ).rgb * lightMapIntensity;\\n\\t\\t#ifndef PHYSICALLY_CORRECT_LIGHTS\\n\\t\\t\\tlightMapIrradiance *= PI;\\n\\t\\t#endif\\n\\t\\tirradiance += lightMapIrradiance;\\n\\t#endif\\n\\t#if defined( USE_ENVMAP ) && defined( STANDARD ) && defined( ENVMAP_TYPE_CUBE_UV )\\n\\t\\tiblIrradiance += getLightProbeIndirectIrradiance( geometry, maxMipLevel );\\n\\t#endif\\n#endif\\n#if defined( USE_ENVMAP ) && defined( RE_IndirectSpecular )\\n\\tradiance += getLightProbeIndirectRadiance( geometry.viewDir, geometry.normal, material.specularRoughness, maxMipLevel );\\n\\t#ifdef CLEARCOAT\\n\\t\\tclearcoatRadiance += getLightProbeIndirectRadiance( geometry.viewDir, geometry.clearcoatNormal, material.clearcoatRoughness, maxMipLevel );\\n\\t#endif\\n#endif\";\n\nvar lights_fragment_end = \"#if defined( RE_IndirectDiffuse )\\n\\tRE_IndirectDiffuse( irradiance, geometry, material, reflectedLight );\\n#endif\\n#if defined( RE_IndirectSpecular )\\n\\tRE_IndirectSpecular( radiance, iblIrradiance, clearcoatRadiance, geometry, material, reflectedLight );\\n#endif\";\n\nvar logdepthbuf_fragment = \"#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\\n\\tgl_FragDepthEXT = vIsPerspective == 0.0 ? gl_FragCoord.z : log2( vFragDepth ) * logDepthBufFC * 0.5;\\n#endif\";\n\nvar logdepthbuf_pars_fragment = \"#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\\n\\tuniform float logDepthBufFC;\\n\\tvarying float vFragDepth;\\n\\tvarying float vIsPerspective;\\n#endif\";\n\nvar logdepthbuf_pars_vertex = \"#ifdef USE_LOGDEPTHBUF\\n\\t#ifdef USE_LOGDEPTHBUF_EXT\\n\\t\\tvarying float vFragDepth;\\n\\t\\tvarying float vIsPerspective;\\n\\t#else\\n\\t\\tuniform float logDepthBufFC;\\n\\t#endif\\n#endif\";\n\nvar logdepthbuf_vertex = \"#ifdef USE_LOGDEPTHBUF\\n\\t#ifdef USE_LOGDEPTHBUF_EXT\\n\\t\\tvFragDepth = 1.0 + gl_Position.w;\\n\\t\\tvIsPerspective = float( isPerspectiveMatrix( projectionMatrix ) );\\n\\t#else\\n\\t\\tif ( isPerspectiveMatrix( projectionMatrix ) ) {\\n\\t\\t\\tgl_Position.z = log2( max( EPSILON, gl_Position.w + 1.0 ) ) * logDepthBufFC - 1.0;\\n\\t\\t\\tgl_Position.z *= gl_Position.w;\\n\\t\\t}\\n\\t#endif\\n#endif\";\n\nvar map_fragment = \"#ifdef USE_MAP\\n\\tvec4 texelColor = texture2D( map, vUv );\\n\\ttexelColor = mapTexelToLinear( texelColor );\\n\\tdiffuseColor *= texelColor;\\n#endif\";\n\nvar map_pars_fragment = \"#ifdef USE_MAP\\n\\tuniform sampler2D map;\\n#endif\";\n\nvar map_particle_fragment = \"#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\\n\\tvec2 uv = ( uvTransform * vec3( gl_PointCoord.x, 1.0 - gl_PointCoord.y, 1 ) ).xy;\\n#endif\\n#ifdef USE_MAP\\n\\tvec4 mapTexel = texture2D( map, uv );\\n\\tdiffuseColor *= mapTexelToLinear( mapTexel );\\n#endif\\n#ifdef USE_ALPHAMAP\\n\\tdiffuseColor.a *= texture2D( alphaMap, uv ).g;\\n#endif\";\n\nvar map_particle_pars_fragment = \"#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\\n\\tuniform mat3 uvTransform;\\n#endif\\n#ifdef USE_MAP\\n\\tuniform sampler2D map;\\n#endif\\n#ifdef USE_ALPHAMAP\\n\\tuniform sampler2D alphaMap;\\n#endif\";\n\nvar metalnessmap_fragment = \"float metalnessFactor = metalness;\\n#ifdef USE_METALNESSMAP\\n\\tvec4 texelMetalness = texture2D( metalnessMap, vUv );\\n\\tmetalnessFactor *= texelMetalness.b;\\n#endif\";\n\nvar metalnessmap_pars_fragment = \"#ifdef USE_METALNESSMAP\\n\\tuniform sampler2D metalnessMap;\\n#endif\";\n\nvar morphnormal_vertex = \"#ifdef USE_MORPHNORMALS\\n\\tobjectNormal *= morphTargetBaseInfluence;\\n\\tobjectNormal += morphNormal0 * morphTargetInfluences[ 0 ];\\n\\tobjectNormal += morphNormal1 * morphTargetInfluences[ 1 ];\\n\\tobjectNormal += morphNormal2 * morphTargetInfluences[ 2 ];\\n\\tobjectNormal += morphNormal3 * morphTargetInfluences[ 3 ];\\n#endif\";\n\nvar morphtarget_pars_vertex = \"#ifdef USE_MORPHTARGETS\\n\\tuniform float morphTargetBaseInfluence;\\n\\t#ifndef USE_MORPHNORMALS\\n\\t\\tuniform float morphTargetInfluences[ 8 ];\\n\\t#else\\n\\t\\tuniform float morphTargetInfluences[ 4 ];\\n\\t#endif\\n#endif\";\n\nvar morphtarget_vertex = \"#ifdef USE_MORPHTARGETS\\n\\ttransformed *= morphTargetBaseInfluence;\\n\\ttransformed += morphTarget0 * morphTargetInfluences[ 0 ];\\n\\ttransformed += morphTarget1 * morphTargetInfluences[ 1 ];\\n\\ttransformed += morphTarget2 * morphTargetInfluences[ 2 ];\\n\\ttransformed += morphTarget3 * morphTargetInfluences[ 3 ];\\n\\t#ifndef USE_MORPHNORMALS\\n\\t\\ttransformed += morphTarget4 * morphTargetInfluences[ 4 ];\\n\\t\\ttransformed += morphTarget5 * morphTargetInfluences[ 5 ];\\n\\t\\ttransformed += morphTarget6 * morphTargetInfluences[ 6 ];\\n\\t\\ttransformed += morphTarget7 * morphTargetInfluences[ 7 ];\\n\\t#endif\\n#endif\";\n\nvar normal_fragment_begin = \"#ifdef FLAT_SHADED\\n\\tvec3 fdx = vec3( dFdx( vViewPosition.x ), dFdx( vViewPosition.y ), dFdx( vViewPosition.z ) );\\n\\tvec3 fdy = vec3( dFdy( vViewPosition.x ), dFdy( vViewPosition.y ), dFdy( vViewPosition.z ) );\\n\\tvec3 normal = normalize( cross( fdx, fdy ) );\\n#else\\n\\tvec3 normal = normalize( vNormal );\\n\\t#ifdef DOUBLE_SIDED\\n\\t\\tnormal = normal * ( float( gl_FrontFacing ) * 2.0 - 1.0 );\\n\\t#endif\\n\\t#ifdef USE_TANGENT\\n\\t\\tvec3 tangent = normalize( vTangent );\\n\\t\\tvec3 bitangent = normalize( vBitangent );\\n\\t\\t#ifdef DOUBLE_SIDED\\n\\t\\t\\ttangent = tangent * ( float( gl_FrontFacing ) * 2.0 - 1.0 );\\n\\t\\t\\tbitangent = bitangent * ( float( gl_FrontFacing ) * 2.0 - 1.0 );\\n\\t\\t#endif\\n\\t\\t#if defined( TANGENTSPACE_NORMALMAP ) || defined( USE_CLEARCOAT_NORMALMAP )\\n\\t\\t\\tmat3 vTBN = mat3( tangent, bitangent, normal );\\n\\t\\t#endif\\n\\t#endif\\n#endif\\nvec3 geometryNormal = normal;\";\n\nvar normal_fragment_maps = \"#ifdef OBJECTSPACE_NORMALMAP\\n\\tnormal = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\\n\\t#ifdef FLIP_SIDED\\n\\t\\tnormal = - normal;\\n\\t#endif\\n\\t#ifdef DOUBLE_SIDED\\n\\t\\tnormal = normal * ( float( gl_FrontFacing ) * 2.0 - 1.0 );\\n\\t#endif\\n\\tnormal = normalize( normalMatrix * normal );\\n#elif defined( TANGENTSPACE_NORMALMAP )\\n\\tvec3 mapN = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\\n\\tmapN.xy *= normalScale;\\n\\t#ifdef USE_TANGENT\\n\\t\\tnormal = normalize( vTBN * mapN );\\n\\t#else\\n\\t\\tnormal = perturbNormal2Arb( -vViewPosition, normal, mapN );\\n\\t#endif\\n#elif defined( USE_BUMPMAP )\\n\\tnormal = perturbNormalArb( -vViewPosition, normal, dHdxy_fwd() );\\n#endif\";\n\nvar normalmap_pars_fragment = \"#ifdef USE_NORMALMAP\\n\\tuniform sampler2D normalMap;\\n\\tuniform vec2 normalScale;\\n#endif\\n#ifdef OBJECTSPACE_NORMALMAP\\n\\tuniform mat3 normalMatrix;\\n#endif\\n#if ! defined ( USE_TANGENT ) && ( defined ( TANGENTSPACE_NORMALMAP ) || defined ( USE_CLEARCOAT_NORMALMAP ) )\\n\\tvec3 perturbNormal2Arb( vec3 eye_pos, vec3 surf_norm, vec3 mapN ) {\\n\\t\\tvec3 q0 = vec3( dFdx( eye_pos.x ), dFdx( eye_pos.y ), dFdx( eye_pos.z ) );\\n\\t\\tvec3 q1 = vec3( dFdy( eye_pos.x ), dFdy( eye_pos.y ), dFdy( eye_pos.z ) );\\n\\t\\tvec2 st0 = dFdx( vUv.st );\\n\\t\\tvec2 st1 = dFdy( vUv.st );\\n\\t\\tfloat scale = sign( st1.t * st0.s - st0.t * st1.s );\\n\\t\\tvec3 S = normalize( ( q0 * st1.t - q1 * st0.t ) * scale );\\n\\t\\tvec3 T = normalize( ( - q0 * st1.s + q1 * st0.s ) * scale );\\n\\t\\tvec3 N = normalize( surf_norm );\\n\\t\\tmat3 tsn = mat3( S, T, N );\\n\\t\\tmapN.xy *= ( float( gl_FrontFacing ) * 2.0 - 1.0 );\\n\\t\\treturn normalize( tsn * mapN );\\n\\t}\\n#endif\";\n\nvar clearcoat_normal_fragment_begin = \"#ifdef CLEARCOAT\\n\\tvec3 clearcoatNormal = geometryNormal;\\n#endif\";\n\nvar clearcoat_normal_fragment_maps = \"#ifdef USE_CLEARCOAT_NORMALMAP\\n\\tvec3 clearcoatMapN = texture2D( clearcoatNormalMap, vUv ).xyz * 2.0 - 1.0;\\n\\tclearcoatMapN.xy *= clearcoatNormalScale;\\n\\t#ifdef USE_TANGENT\\n\\t\\tclearcoatNormal = normalize( vTBN * clearcoatMapN );\\n\\t#else\\n\\t\\tclearcoatNormal = perturbNormal2Arb( - vViewPosition, clearcoatNormal, clearcoatMapN );\\n\\t#endif\\n#endif\";\n\nvar clearcoat_pars_fragment = \"#ifdef USE_CLEARCOATMAP\\n\\tuniform sampler2D clearcoatMap;\\n#endif\\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\\n\\tuniform sampler2D clearcoatRoughnessMap;\\n#endif\\n#ifdef USE_CLEARCOAT_NORMALMAP\\n\\tuniform sampler2D clearcoatNormalMap;\\n\\tuniform vec2 clearcoatNormalScale;\\n#endif\";\n\nvar packing = \"vec3 packNormalToRGB( const in vec3 normal ) {\\n\\treturn normalize( normal ) * 0.5 + 0.5;\\n}\\nvec3 unpackRGBToNormal( const in vec3 rgb ) {\\n\\treturn 2.0 * rgb.xyz - 1.0;\\n}\\nconst float PackUpscale = 256. / 255.;const float UnpackDownscale = 255. / 256.;\\nconst vec3 PackFactors = vec3( 256. * 256. * 256., 256. * 256., 256. );\\nconst vec4 UnpackFactors = UnpackDownscale / vec4( PackFactors, 1. );\\nconst float ShiftRight8 = 1. / 256.;\\nvec4 packDepthToRGBA( const in float v ) {\\n\\tvec4 r = vec4( fract( v * PackFactors ), v );\\n\\tr.yzw -= r.xyz * ShiftRight8;\\treturn r * PackUpscale;\\n}\\nfloat unpackRGBAToDepth( const in vec4 v ) {\\n\\treturn dot( v, UnpackFactors );\\n}\\nvec4 pack2HalfToRGBA( vec2 v ) {\\n\\tvec4 r = vec4( v.x, fract( v.x * 255.0 ), v.y, fract( v.y * 255.0 ));\\n\\treturn vec4( r.x - r.y / 255.0, r.y, r.z - r.w / 255.0, r.w);\\n}\\nvec2 unpackRGBATo2Half( vec4 v ) {\\n\\treturn vec2( v.x + ( v.y / 255.0 ), v.z + ( v.w / 255.0 ) );\\n}\\nfloat viewZToOrthographicDepth( const in float viewZ, const in float near, const in float far ) {\\n\\treturn ( viewZ + near ) / ( near - far );\\n}\\nfloat orthographicDepthToViewZ( const in float linearClipZ, const in float near, const in float far ) {\\n\\treturn linearClipZ * ( near - far ) - near;\\n}\\nfloat viewZToPerspectiveDepth( const in float viewZ, const in float near, const in float far ) {\\n\\treturn (( near + viewZ ) * far ) / (( far - near ) * viewZ );\\n}\\nfloat perspectiveDepthToViewZ( const in float invClipZ, const in float near, const in float far ) {\\n\\treturn ( near * far ) / ( ( far - near ) * invClipZ - far );\\n}\";\n\nvar premultiplied_alpha_fragment = \"#ifdef PREMULTIPLIED_ALPHA\\n\\tgl_FragColor.rgb *= gl_FragColor.a;\\n#endif\";\n\nvar project_vertex = \"vec4 mvPosition = vec4( transformed, 1.0 );\\n#ifdef USE_INSTANCING\\n\\tmvPosition = instanceMatrix * mvPosition;\\n#endif\\nmvPosition = modelViewMatrix * mvPosition;\\ngl_Position = projectionMatrix * mvPosition;\";\n\nvar dithering_fragment = \"#ifdef DITHERING\\n\\tgl_FragColor.rgb = dithering( gl_FragColor.rgb );\\n#endif\";\n\nvar dithering_pars_fragment = \"#ifdef DITHERING\\n\\tvec3 dithering( vec3 color ) {\\n\\t\\tfloat grid_position = rand( gl_FragCoord.xy );\\n\\t\\tvec3 dither_shift_RGB = vec3( 0.25 / 255.0, -0.25 / 255.0, 0.25 / 255.0 );\\n\\t\\tdither_shift_RGB = mix( 2.0 * dither_shift_RGB, -2.0 * dither_shift_RGB, grid_position );\\n\\t\\treturn color + dither_shift_RGB;\\n\\t}\\n#endif\";\n\nvar roughnessmap_fragment = \"float roughnessFactor = roughness;\\n#ifdef USE_ROUGHNESSMAP\\n\\tvec4 texelRoughness = texture2D( roughnessMap, vUv );\\n\\troughnessFactor *= texelRoughness.g;\\n#endif\";\n\nvar roughnessmap_pars_fragment = \"#ifdef USE_ROUGHNESSMAP\\n\\tuniform sampler2D roughnessMap;\\n#endif\";\n\nvar shadowmap_pars_fragment = \"#ifdef USE_SHADOWMAP\\n\\t#if NUM_DIR_LIGHT_SHADOWS > 0\\n\\t\\tuniform sampler2D directionalShadowMap[ NUM_DIR_LIGHT_SHADOWS ];\\n\\t\\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\\n\\t\\tstruct DirectionalLightShadow {\\n\\t\\t\\tfloat shadowBias;\\n\\t\\t\\tfloat shadowNormalBias;\\n\\t\\t\\tfloat shadowRadius;\\n\\t\\t\\tvec2 shadowMapSize;\\n\\t\\t};\\n\\t\\tuniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\\n\\t#endif\\n\\t#if NUM_SPOT_LIGHT_SHADOWS > 0\\n\\t\\tuniform sampler2D spotShadowMap[ NUM_SPOT_LIGHT_SHADOWS ];\\n\\t\\tvarying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHT_SHADOWS ];\\n\\t\\tstruct SpotLightShadow {\\n\\t\\t\\tfloat shadowBias;\\n\\t\\t\\tfloat shadowNormalBias;\\n\\t\\t\\tfloat shadowRadius;\\n\\t\\t\\tvec2 shadowMapSize;\\n\\t\\t};\\n\\t\\tuniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\\n\\t#endif\\n\\t#if NUM_POINT_LIGHT_SHADOWS > 0\\n\\t\\tuniform sampler2D pointShadowMap[ NUM_POINT_LIGHT_SHADOWS ];\\n\\t\\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\\n\\t\\tstruct PointLightShadow {\\n\\t\\t\\tfloat shadowBias;\\n\\t\\t\\tfloat shadowNormalBias;\\n\\t\\t\\tfloat shadowRadius;\\n\\t\\t\\tvec2 shadowMapSize;\\n\\t\\t\\tfloat shadowCameraNear;\\n\\t\\t\\tfloat shadowCameraFar;\\n\\t\\t};\\n\\t\\tuniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\\n\\t#endif\\n\\tfloat texture2DCompare( sampler2D depths, vec2 uv, float compare ) {\\n\\t\\treturn step( compare, unpackRGBAToDepth( texture2D( depths, uv ) ) );\\n\\t}\\n\\tvec2 texture2DDistribution( sampler2D shadow, vec2 uv ) {\\n\\t\\treturn unpackRGBATo2Half( texture2D( shadow, uv ) );\\n\\t}\\n\\tfloat VSMShadow (sampler2D shadow, vec2 uv, float compare ){\\n\\t\\tfloat occlusion = 1.0;\\n\\t\\tvec2 distribution = texture2DDistribution( shadow, uv );\\n\\t\\tfloat hard_shadow = step( compare , distribution.x );\\n\\t\\tif (hard_shadow != 1.0 ) {\\n\\t\\t\\tfloat distance = compare - distribution.x ;\\n\\t\\t\\tfloat variance = max( 0.00000, distribution.y * distribution.y );\\n\\t\\t\\tfloat softness_probability = variance / (variance + distance * distance );\\t\\t\\tsoftness_probability = clamp( ( softness_probability - 0.3 ) / ( 0.95 - 0.3 ), 0.0, 1.0 );\\t\\t\\tocclusion = clamp( max( hard_shadow, softness_probability ), 0.0, 1.0 );\\n\\t\\t}\\n\\t\\treturn occlusion;\\n\\t}\\n\\tfloat getShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord ) {\\n\\t\\tfloat shadow = 1.0;\\n\\t\\tshadowCoord.xyz /= shadowCoord.w;\\n\\t\\tshadowCoord.z += shadowBias;\\n\\t\\tbvec4 inFrustumVec = bvec4 ( shadowCoord.x >= 0.0, shadowCoord.x <= 1.0, shadowCoord.y >= 0.0, shadowCoord.y <= 1.0 );\\n\\t\\tbool inFrustum = all( inFrustumVec );\\n\\t\\tbvec2 frustumTestVec = bvec2( inFrustum, shadowCoord.z <= 1.0 );\\n\\t\\tbool frustumTest = all( frustumTestVec );\\n\\t\\tif ( frustumTest ) {\\n\\t\\t#if defined( SHADOWMAP_TYPE_PCF )\\n\\t\\t\\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\\n\\t\\t\\tfloat dx0 = - texelSize.x * shadowRadius;\\n\\t\\t\\tfloat dy0 = - texelSize.y * shadowRadius;\\n\\t\\t\\tfloat dx1 = + texelSize.x * shadowRadius;\\n\\t\\t\\tfloat dy1 = + texelSize.y * shadowRadius;\\n\\t\\t\\tfloat dx2 = dx0 / 2.0;\\n\\t\\t\\tfloat dy2 = dy0 / 2.0;\\n\\t\\t\\tfloat dx3 = dx1 / 2.0;\\n\\t\\t\\tfloat dy3 = dy1 / 2.0;\\n\\t\\t\\tshadow = (\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy0 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy0 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy0 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy2 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy2 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy2 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, 0.0 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, 0.0 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, 0.0 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, 0.0 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy3 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy3 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy3 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy1 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy1 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy1 ), shadowCoord.z )\\n\\t\\t\\t) * ( 1.0 / 17.0 );\\n\\t\\t#elif defined( SHADOWMAP_TYPE_PCF_SOFT )\\n\\t\\t\\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\\n\\t\\t\\tfloat dx = texelSize.x;\\n\\t\\t\\tfloat dy = texelSize.y;\\n\\t\\t\\tvec2 uv = shadowCoord.xy;\\n\\t\\t\\tvec2 f = fract( uv * shadowMapSize + 0.5 );\\n\\t\\t\\tuv -= f * texelSize;\\n\\t\\t\\tshadow = (\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, uv, shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, uv + vec2( dx, 0.0 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, uv + vec2( 0.0, dy ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, uv + texelSize, shadowCoord.z ) +\\n\\t\\t\\t\\tmix( texture2DCompare( shadowMap, uv + vec2( -dx, 0.0 ), shadowCoord.z ), \\n\\t\\t\\t\\t\\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 0.0 ), shadowCoord.z ),\\n\\t\\t\\t\\t\\t f.x ) +\\n\\t\\t\\t\\tmix( texture2DCompare( shadowMap, uv + vec2( -dx, dy ), shadowCoord.z ), \\n\\t\\t\\t\\t\\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, dy ), shadowCoord.z ),\\n\\t\\t\\t\\t\\t f.x ) +\\n\\t\\t\\t\\tmix( texture2DCompare( shadowMap, uv + vec2( 0.0, -dy ), shadowCoord.z ), \\n\\t\\t\\t\\t\\t texture2DCompare( shadowMap, uv + vec2( 0.0, 2.0 * dy ), shadowCoord.z ),\\n\\t\\t\\t\\t\\t f.y ) +\\n\\t\\t\\t\\tmix( texture2DCompare( shadowMap, uv + vec2( dx, -dy ), shadowCoord.z ), \\n\\t\\t\\t\\t\\t texture2DCompare( shadowMap, uv + vec2( dx, 2.0 * dy ), shadowCoord.z ),\\n\\t\\t\\t\\t\\t f.y ) +\\n\\t\\t\\t\\tmix( mix( texture2DCompare( shadowMap, uv + vec2( -dx, -dy ), shadowCoord.z ), \\n\\t\\t\\t\\t\\t\\t  texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, -dy ), shadowCoord.z ),\\n\\t\\t\\t\\t\\t\\t  f.x ),\\n\\t\\t\\t\\t\\t mix( texture2DCompare( shadowMap, uv + vec2( -dx, 2.0 * dy ), shadowCoord.z ), \\n\\t\\t\\t\\t\\t\\t  texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 2.0 * dy ), shadowCoord.z ),\\n\\t\\t\\t\\t\\t\\t  f.x ),\\n\\t\\t\\t\\t\\t f.y )\\n\\t\\t\\t) * ( 1.0 / 9.0 );\\n\\t\\t#elif defined( SHADOWMAP_TYPE_VSM )\\n\\t\\t\\tshadow = VSMShadow( shadowMap, shadowCoord.xy, shadowCoord.z );\\n\\t\\t#else\\n\\t\\t\\tshadow = texture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z );\\n\\t\\t#endif\\n\\t\\t}\\n\\t\\treturn shadow;\\n\\t}\\n\\tvec2 cubeToUV( vec3 v, float texelSizeY ) {\\n\\t\\tvec3 absV = abs( v );\\n\\t\\tfloat scaleToCube = 1.0 / max( absV.x, max( absV.y, absV.z ) );\\n\\t\\tabsV *= scaleToCube;\\n\\t\\tv *= scaleToCube * ( 1.0 - 2.0 * texelSizeY );\\n\\t\\tvec2 planar = v.xy;\\n\\t\\tfloat almostATexel = 1.5 * texelSizeY;\\n\\t\\tfloat almostOne = 1.0 - almostATexel;\\n\\t\\tif ( absV.z >= almostOne ) {\\n\\t\\t\\tif ( v.z > 0.0 )\\n\\t\\t\\t\\tplanar.x = 4.0 - v.x;\\n\\t\\t} else if ( absV.x >= almostOne ) {\\n\\t\\t\\tfloat signX = sign( v.x );\\n\\t\\t\\tplanar.x = v.z * signX + 2.0 * signX;\\n\\t\\t} else if ( absV.y >= almostOne ) {\\n\\t\\t\\tfloat signY = sign( v.y );\\n\\t\\t\\tplanar.x = v.x + 2.0 * signY + 2.0;\\n\\t\\t\\tplanar.y = v.z * signY - 2.0;\\n\\t\\t}\\n\\t\\treturn vec2( 0.125, 0.25 ) * planar + vec2( 0.375, 0.75 );\\n\\t}\\n\\tfloat getPointShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord, float shadowCameraNear, float shadowCameraFar ) {\\n\\t\\tvec2 texelSize = vec2( 1.0 ) / ( shadowMapSize * vec2( 4.0, 2.0 ) );\\n\\t\\tvec3 lightToPosition = shadowCoord.xyz;\\n\\t\\tfloat dp = ( length( lightToPosition ) - shadowCameraNear ) / ( shadowCameraFar - shadowCameraNear );\\t\\tdp += shadowBias;\\n\\t\\tvec3 bd3D = normalize( lightToPosition );\\n\\t\\t#if defined( SHADOWMAP_TYPE_PCF ) || defined( SHADOWMAP_TYPE_PCF_SOFT ) || defined( SHADOWMAP_TYPE_VSM )\\n\\t\\t\\tvec2 offset = vec2( - 1, 1 ) * shadowRadius * texelSize.y;\\n\\t\\t\\treturn (\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyy, texelSize.y ), dp ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyy, texelSize.y ), dp ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyx, texelSize.y ), dp ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyx, texelSize.y ), dp ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxy, texelSize.y ), dp ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxy, texelSize.y ), dp ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxx, texelSize.y ), dp ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxx, texelSize.y ), dp )\\n\\t\\t\\t) * ( 1.0 / 9.0 );\\n\\t\\t#else\\n\\t\\t\\treturn texture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp );\\n\\t\\t#endif\\n\\t}\\n#endif\";\n\nvar shadowmap_pars_vertex = \"#ifdef USE_SHADOWMAP\\n\\t#if NUM_DIR_LIGHT_SHADOWS > 0\\n\\t\\tuniform mat4 directionalShadowMatrix[ NUM_DIR_LIGHT_SHADOWS ];\\n\\t\\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\\n\\t\\tstruct DirectionalLightShadow {\\n\\t\\t\\tfloat shadowBias;\\n\\t\\t\\tfloat shadowNormalBias;\\n\\t\\t\\tfloat shadowRadius;\\n\\t\\t\\tvec2 shadowMapSize;\\n\\t\\t};\\n\\t\\tuniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\\n\\t#endif\\n\\t#if NUM_SPOT_LIGHT_SHADOWS > 0\\n\\t\\tuniform mat4 spotShadowMatrix[ NUM_SPOT_LIGHT_SHADOWS ];\\n\\t\\tvarying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHT_SHADOWS ];\\n\\t\\tstruct SpotLightShadow {\\n\\t\\t\\tfloat shadowBias;\\n\\t\\t\\tfloat shadowNormalBias;\\n\\t\\t\\tfloat shadowRadius;\\n\\t\\t\\tvec2 shadowMapSize;\\n\\t\\t};\\n\\t\\tuniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\\n\\t#endif\\n\\t#if NUM_POINT_LIGHT_SHADOWS > 0\\n\\t\\tuniform mat4 pointShadowMatrix[ NUM_POINT_LIGHT_SHADOWS ];\\n\\t\\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\\n\\t\\tstruct PointLightShadow {\\n\\t\\t\\tfloat shadowBias;\\n\\t\\t\\tfloat shadowNormalBias;\\n\\t\\t\\tfloat shadowRadius;\\n\\t\\t\\tvec2 shadowMapSize;\\n\\t\\t\\tfloat shadowCameraNear;\\n\\t\\t\\tfloat shadowCameraFar;\\n\\t\\t};\\n\\t\\tuniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\\n\\t#endif\\n#endif\";\n\nvar shadowmap_vertex = \"#ifdef USE_SHADOWMAP\\n\\t#if NUM_DIR_LIGHT_SHADOWS > 0 || NUM_SPOT_LIGHT_SHADOWS > 0 || NUM_POINT_LIGHT_SHADOWS > 0\\n\\t\\tvec3 shadowWorldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\\n\\t\\tvec4 shadowWorldPosition;\\n\\t#endif\\n\\t#if NUM_DIR_LIGHT_SHADOWS > 0\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\\n\\t\\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * directionalLightShadows[ i ].shadowNormalBias, 0 );\\n\\t\\tvDirectionalShadowCoord[ i ] = directionalShadowMatrix[ i ] * shadowWorldPosition;\\n\\t}\\n\\t#pragma unroll_loop_end\\n\\t#endif\\n\\t#if NUM_SPOT_LIGHT_SHADOWS > 0\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {\\n\\t\\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * spotLightShadows[ i ].shadowNormalBias, 0 );\\n\\t\\tvSpotShadowCoord[ i ] = spotShadowMatrix[ i ] * shadowWorldPosition;\\n\\t}\\n\\t#pragma unroll_loop_end\\n\\t#endif\\n\\t#if NUM_POINT_LIGHT_SHADOWS > 0\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\\n\\t\\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * pointLightShadows[ i ].shadowNormalBias, 0 );\\n\\t\\tvPointShadowCoord[ i ] = pointShadowMatrix[ i ] * shadowWorldPosition;\\n\\t}\\n\\t#pragma unroll_loop_end\\n\\t#endif\\n#endif\";\n\nvar shadowmask_pars_fragment = \"float getShadowMask() {\\n\\tfloat shadow = 1.0;\\n\\t#ifdef USE_SHADOWMAP\\n\\t#if NUM_DIR_LIGHT_SHADOWS > 0\\n\\tDirectionalLightShadow directionalLight;\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\\n\\t\\tdirectionalLight = directionalLightShadows[ i ];\\n\\t\\tshadow *= receiveShadow ? getShadow( directionalShadowMap[ i ], directionalLight.shadowMapSize, directionalLight.shadowBias, directionalLight.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\\n\\t}\\n\\t#pragma unroll_loop_end\\n\\t#endif\\n\\t#if NUM_SPOT_LIGHT_SHADOWS > 0\\n\\tSpotLightShadow spotLight;\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {\\n\\t\\tspotLight = spotLightShadows[ i ];\\n\\t\\tshadow *= receiveShadow ? getShadow( spotShadowMap[ i ], spotLight.shadowMapSize, spotLight.shadowBias, spotLight.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\\n\\t}\\n\\t#pragma unroll_loop_end\\n\\t#endif\\n\\t#if NUM_POINT_LIGHT_SHADOWS > 0\\n\\tPointLightShadow pointLight;\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\\n\\t\\tpointLight = pointLightShadows[ i ];\\n\\t\\tshadow *= receiveShadow ? getPointShadow( pointShadowMap[ i ], pointLight.shadowMapSize, pointLight.shadowBias, pointLight.shadowRadius, vPointShadowCoord[ i ], pointLight.shadowCameraNear, pointLight.shadowCameraFar ) : 1.0;\\n\\t}\\n\\t#pragma unroll_loop_end\\n\\t#endif\\n\\t#endif\\n\\treturn shadow;\\n}\";\n\nvar skinbase_vertex = \"#ifdef USE_SKINNING\\n\\tmat4 boneMatX = getBoneMatrix( skinIndex.x );\\n\\tmat4 boneMatY = getBoneMatrix( skinIndex.y );\\n\\tmat4 boneMatZ = getBoneMatrix( skinIndex.z );\\n\\tmat4 boneMatW = getBoneMatrix( skinIndex.w );\\n#endif\";\n\nvar skinning_pars_vertex = \"#ifdef USE_SKINNING\\n\\tuniform mat4 bindMatrix;\\n\\tuniform mat4 bindMatrixInverse;\\n\\t#ifdef BONE_TEXTURE\\n\\t\\tuniform highp sampler2D boneTexture;\\n\\t\\tuniform int boneTextureSize;\\n\\t\\tmat4 getBoneMatrix( const in float i ) {\\n\\t\\t\\tfloat j = i * 4.0;\\n\\t\\t\\tfloat x = mod( j, float( boneTextureSize ) );\\n\\t\\t\\tfloat y = floor( j / float( boneTextureSize ) );\\n\\t\\t\\tfloat dx = 1.0 / float( boneTextureSize );\\n\\t\\t\\tfloat dy = 1.0 / float( boneTextureSize );\\n\\t\\t\\ty = dy * ( y + 0.5 );\\n\\t\\t\\tvec4 v1 = texture2D( boneTexture, vec2( dx * ( x + 0.5 ), y ) );\\n\\t\\t\\tvec4 v2 = texture2D( boneTexture, vec2( dx * ( x + 1.5 ), y ) );\\n\\t\\t\\tvec4 v3 = texture2D( boneTexture, vec2( dx * ( x + 2.5 ), y ) );\\n\\t\\t\\tvec4 v4 = texture2D( boneTexture, vec2( dx * ( x + 3.5 ), y ) );\\n\\t\\t\\tmat4 bone = mat4( v1, v2, v3, v4 );\\n\\t\\t\\treturn bone;\\n\\t\\t}\\n\\t#else\\n\\t\\tuniform mat4 boneMatrices[ MAX_BONES ];\\n\\t\\tmat4 getBoneMatrix( const in float i ) {\\n\\t\\t\\tmat4 bone = boneMatrices[ int(i) ];\\n\\t\\t\\treturn bone;\\n\\t\\t}\\n\\t#endif\\n#endif\";\n\nvar skinning_vertex = \"#ifdef USE_SKINNING\\n\\tvec4 skinVertex = bindMatrix * vec4( transformed, 1.0 );\\n\\tvec4 skinned = vec4( 0.0 );\\n\\tskinned += boneMatX * skinVertex * skinWeight.x;\\n\\tskinned += boneMatY * skinVertex * skinWeight.y;\\n\\tskinned += boneMatZ * skinVertex * skinWeight.z;\\n\\tskinned += boneMatW * skinVertex * skinWeight.w;\\n\\ttransformed = ( bindMatrixInverse * skinned ).xyz;\\n#endif\";\n\nvar skinnormal_vertex = \"#ifdef USE_SKINNING\\n\\tmat4 skinMatrix = mat4( 0.0 );\\n\\tskinMatrix += skinWeight.x * boneMatX;\\n\\tskinMatrix += skinWeight.y * boneMatY;\\n\\tskinMatrix += skinWeight.z * boneMatZ;\\n\\tskinMatrix += skinWeight.w * boneMatW;\\n\\tskinMatrix = bindMatrixInverse * skinMatrix * bindMatrix;\\n\\tobjectNormal = vec4( skinMatrix * vec4( objectNormal, 0.0 ) ).xyz;\\n\\t#ifdef USE_TANGENT\\n\\t\\tobjectTangent = vec4( skinMatrix * vec4( objectTangent, 0.0 ) ).xyz;\\n\\t#endif\\n#endif\";\n\nvar specularmap_fragment = \"float specularStrength;\\n#ifdef USE_SPECULARMAP\\n\\tvec4 texelSpecular = texture2D( specularMap, vUv );\\n\\tspecularStrength = texelSpecular.r;\\n#else\\n\\tspecularStrength = 1.0;\\n#endif\";\n\nvar specularmap_pars_fragment = \"#ifdef USE_SPECULARMAP\\n\\tuniform sampler2D specularMap;\\n#endif\";\n\nvar tonemapping_fragment = \"#if defined( TONE_MAPPING )\\n\\tgl_FragColor.rgb = toneMapping( gl_FragColor.rgb );\\n#endif\";\n\nvar tonemapping_pars_fragment = \"#ifndef saturate\\n#define saturate(a) clamp( a, 0.0, 1.0 )\\n#endif\\nuniform float toneMappingExposure;\\nvec3 LinearToneMapping( vec3 color ) {\\n\\treturn toneMappingExposure * color;\\n}\\nvec3 ReinhardToneMapping( vec3 color ) {\\n\\tcolor *= toneMappingExposure;\\n\\treturn saturate( color / ( vec3( 1.0 ) + color ) );\\n}\\nvec3 OptimizedCineonToneMapping( vec3 color ) {\\n\\tcolor *= toneMappingExposure;\\n\\tcolor = max( vec3( 0.0 ), color - 0.004 );\\n\\treturn pow( ( color * ( 6.2 * color + 0.5 ) ) / ( color * ( 6.2 * color + 1.7 ) + 0.06 ), vec3( 2.2 ) );\\n}\\nvec3 RRTAndODTFit( vec3 v ) {\\n\\tvec3 a = v * ( v + 0.0245786 ) - 0.000090537;\\n\\tvec3 b = v * ( 0.983729 * v + 0.4329510 ) + 0.238081;\\n\\treturn a / b;\\n}\\nvec3 ACESFilmicToneMapping( vec3 color ) {\\n\\tconst mat3 ACESInputMat = mat3(\\n\\t\\tvec3( 0.59719, 0.07600, 0.02840 ),\\t\\tvec3( 0.35458, 0.90834, 0.13383 ),\\n\\t\\tvec3( 0.04823, 0.01566, 0.83777 )\\n\\t);\\n\\tconst mat3 ACESOutputMat = mat3(\\n\\t\\tvec3(  1.60475, -0.10208, -0.00327 ),\\t\\tvec3( -0.53108,  1.10813, -0.07276 ),\\n\\t\\tvec3( -0.07367, -0.00605,  1.07602 )\\n\\t);\\n\\tcolor *= toneMappingExposure / 0.6;\\n\\tcolor = ACESInputMat * color;\\n\\tcolor = RRTAndODTFit( color );\\n\\tcolor = ACESOutputMat * color;\\n\\treturn saturate( color );\\n}\\nvec3 CustomToneMapping( vec3 color ) { return color; }\";\n\nvar transmissionmap_fragment = \"#ifdef USE_TRANSMISSIONMAP\\n\\ttotalTransmission *= texture2D( transmissionMap, vUv ).r;\\n#endif\";\n\nvar transmissionmap_pars_fragment = \"#ifdef USE_TRANSMISSIONMAP\\n\\tuniform sampler2D transmissionMap;\\n#endif\";\n\nvar uv_pars_fragment = \"#if ( defined( USE_UV ) && ! defined( UVS_VERTEX_ONLY ) )\\n\\tvarying vec2 vUv;\\n#endif\";\n\nvar uv_pars_vertex = \"#ifdef USE_UV\\n\\t#ifdef UVS_VERTEX_ONLY\\n\\t\\tvec2 vUv;\\n\\t#else\\n\\t\\tvarying vec2 vUv;\\n\\t#endif\\n\\tuniform mat3 uvTransform;\\n#endif\";\n\nvar uv_vertex = \"#ifdef USE_UV\\n\\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\\n#endif\";\n\nvar uv2_pars_fragment = \"#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\\n\\tvarying vec2 vUv2;\\n#endif\";\n\nvar uv2_pars_vertex = \"#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\\n\\tattribute vec2 uv2;\\n\\tvarying vec2 vUv2;\\n\\tuniform mat3 uv2Transform;\\n#endif\";\n\nvar uv2_vertex = \"#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\\n\\tvUv2 = ( uv2Transform * vec3( uv2, 1 ) ).xy;\\n#endif\";\n\nvar worldpos_vertex = \"#if defined( USE_ENVMAP ) || defined( DISTANCE ) || defined ( USE_SHADOWMAP )\\n\\tvec4 worldPosition = vec4( transformed, 1.0 );\\n\\t#ifdef USE_INSTANCING\\n\\t\\tworldPosition = instanceMatrix * worldPosition;\\n\\t#endif\\n\\tworldPosition = modelMatrix * worldPosition;\\n#endif\";\n\nvar background_frag = \"uniform sampler2D t2D;\\nvarying vec2 vUv;\\nvoid main() {\\n\\tvec4 texColor = texture2D( t2D, vUv );\\n\\tgl_FragColor = mapTexelToLinear( texColor );\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n}\";\n\nvar background_vert = \"varying vec2 vUv;\\nuniform mat3 uvTransform;\\nvoid main() {\\n\\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\\n\\tgl_Position = vec4( position.xy, 1.0, 1.0 );\\n}\";\n\nvar cube_frag = \"#include <envmap_common_pars_fragment>\\nuniform float opacity;\\nvarying vec3 vWorldDirection;\\n#include <cube_uv_reflection_fragment>\\nvoid main() {\\n\\tvec3 vReflect = vWorldDirection;\\n\\t#include <envmap_fragment>\\n\\tgl_FragColor = envColor;\\n\\tgl_FragColor.a *= opacity;\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n}\";\n\nvar cube_vert = \"varying vec3 vWorldDirection;\\n#include <common>\\nvoid main() {\\n\\tvWorldDirection = transformDirection( position, modelMatrix );\\n\\t#include <begin_vertex>\\n\\t#include <project_vertex>\\n\\tgl_Position.z = gl_Position.w;\\n}\";\n\nvar depth_frag = \"#if DEPTH_PACKING == 3200\\n\\tuniform float opacity;\\n#endif\\n#include <common>\\n#include <packing>\\n#include <uv_pars_fragment>\\n#include <map_pars_fragment>\\n#include <alphamap_pars_fragment>\\n#include <logdepthbuf_pars_fragment>\\n#include <clipping_planes_pars_fragment>\\nvarying vec2 vHighPrecisionZW;\\nvoid main() {\\n\\t#include <clipping_planes_fragment>\\n\\tvec4 diffuseColor = vec4( 1.0 );\\n\\t#if DEPTH_PACKING == 3200\\n\\t\\tdiffuseColor.a = opacity;\\n\\t#endif\\n\\t#include <map_fragment>\\n\\t#include <alphamap_fragment>\\n\\t#include <alphatest_fragment>\\n\\t#include <logdepthbuf_fragment>\\n\\tfloat fragCoordZ = 0.5 * vHighPrecisionZW[0] / vHighPrecisionZW[1] + 0.5;\\n\\t#if DEPTH_PACKING == 3200\\n\\t\\tgl_FragColor = vec4( vec3( 1.0 - fragCoordZ ), opacity );\\n\\t#elif DEPTH_PACKING == 3201\\n\\t\\tgl_FragColor = packDepthToRGBA( fragCoordZ );\\n\\t#endif\\n}\";\n\nvar depth_vert = \"#include <common>\\n#include <uv_pars_vertex>\\n#include <displacementmap_pars_vertex>\\n#include <morphtarget_pars_vertex>\\n#include <skinning_pars_vertex>\\n#include <logdepthbuf_pars_vertex>\\n#include <clipping_planes_pars_vertex>\\nvarying vec2 vHighPrecisionZW;\\nvoid main() {\\n\\t#include <uv_vertex>\\n\\t#include <skinbase_vertex>\\n\\t#ifdef USE_DISPLACEMENTMAP\\n\\t\\t#include <beginnormal_vertex>\\n\\t\\t#include <morphnormal_vertex>\\n\\t\\t#include <skinnormal_vertex>\\n\\t#endif\\n\\t#include <begin_vertex>\\n\\t#include <morphtarget_vertex>\\n\\t#include <skinning_vertex>\\n\\t#include <displacementmap_vertex>\\n\\t#include <project_vertex>\\n\\t#include <logdepthbuf_vertex>\\n\\t#include <clipping_planes_vertex>\\n\\tvHighPrecisionZW = gl_Position.zw;\\n}\";\n\nvar distanceRGBA_frag = \"#define DISTANCE\\nuniform vec3 referencePosition;\\nuniform float nearDistance;\\nuniform float farDistance;\\nvarying vec3 vWorldPosition;\\n#include <common>\\n#include <packing>\\n#include <uv_pars_fragment>\\n#include <map_pars_fragment>\\n#include <alphamap_pars_fragment>\\n#include <clipping_planes_pars_fragment>\\nvoid main () {\\n\\t#include <clipping_planes_fragment>\\n\\tvec4 diffuseColor = vec4( 1.0 );\\n\\t#include <map_fragment>\\n\\t#include <alphamap_fragment>\\n\\t#include <alphatest_fragment>\\n\\tfloat dist = length( vWorldPosition - referencePosition );\\n\\tdist = ( dist - nearDistance ) / ( farDistance - nearDistance );\\n\\tdist = saturate( dist );\\n\\tgl_FragColor = packDepthToRGBA( dist );\\n}\";\n\nvar distanceRGBA_vert = \"#define DISTANCE\\nvarying vec3 vWorldPosition;\\n#include <common>\\n#include <uv_pars_vertex>\\n#include <displacementmap_pars_vertex>\\n#include <morphtarget_pars_vertex>\\n#include <skinning_pars_vertex>\\n#include <clipping_planes_pars_vertex>\\nvoid main() {\\n\\t#include <uv_vertex>\\n\\t#include <skinbase_vertex>\\n\\t#ifdef USE_DISPLACEMENTMAP\\n\\t\\t#include <beginnormal_vertex>\\n\\t\\t#include <morphnormal_vertex>\\n\\t\\t#include <skinnormal_vertex>\\n\\t#endif\\n\\t#include <begin_vertex>\\n\\t#include <morphtarget_vertex>\\n\\t#include <skinning_vertex>\\n\\t#include <displacementmap_vertex>\\n\\t#include <project_vertex>\\n\\t#include <worldpos_vertex>\\n\\t#include <clipping_planes_vertex>\\n\\tvWorldPosition = worldPosition.xyz;\\n}\";\n\nvar equirect_frag = \"uniform sampler2D tEquirect;\\nvarying vec3 vWorldDirection;\\n#include <common>\\nvoid main() {\\n\\tvec3 direction = normalize( vWorldDirection );\\n\\tvec2 sampleUV = equirectUv( direction );\\n\\tvec4 texColor = texture2D( tEquirect, sampleUV );\\n\\tgl_FragColor = mapTexelToLinear( texColor );\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n}\";\n\nvar equirect_vert = \"varying vec3 vWorldDirection;\\n#include <common>\\nvoid main() {\\n\\tvWorldDirection = transformDirection( position, modelMatrix );\\n\\t#include <begin_vertex>\\n\\t#include <project_vertex>\\n}\";\n\nvar linedashed_frag = \"uniform vec3 diffuse;\\nuniform float opacity;\\nuniform float dashSize;\\nuniform float totalSize;\\nvarying float vLineDistance;\\n#include <common>\\n#include <color_pars_fragment>\\n#include <fog_pars_fragment>\\n#include <logdepthbuf_pars_fragment>\\n#include <clipping_planes_pars_fragment>\\nvoid main() {\\n\\t#include <clipping_planes_fragment>\\n\\tif ( mod( vLineDistance, totalSize ) > dashSize ) {\\n\\t\\tdiscard;\\n\\t}\\n\\tvec3 outgoingLight = vec3( 0.0 );\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\t#include <logdepthbuf_fragment>\\n\\t#include <color_fragment>\\n\\toutgoingLight = diffuseColor.rgb;\\n\\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n\\t#include <fog_fragment>\\n\\t#include <premultiplied_alpha_fragment>\\n}\";\n\nvar linedashed_vert = \"uniform float scale;\\nattribute float lineDistance;\\nvarying float vLineDistance;\\n#include <common>\\n#include <color_pars_vertex>\\n#include <fog_pars_vertex>\\n#include <morphtarget_pars_vertex>\\n#include <logdepthbuf_pars_vertex>\\n#include <clipping_planes_pars_vertex>\\nvoid main() {\\n\\tvLineDistance = scale * lineDistance;\\n\\t#include <color_vertex>\\n\\t#include <begin_vertex>\\n\\t#include <morphtarget_vertex>\\n\\t#include <project_vertex>\\n\\t#include <logdepthbuf_vertex>\\n\\t#include <clipping_planes_vertex>\\n\\t#include <fog_vertex>\\n}\";\n\nvar meshbasic_frag = \"uniform vec3 diffuse;\\nuniform float opacity;\\n#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n#endif\\n#include <common>\\n#include <dithering_pars_fragment>\\n#include <color_pars_fragment>\\n#include <uv_pars_fragment>\\n#include <uv2_pars_fragment>\\n#include <map_pars_fragment>\\n#include <alphamap_pars_fragment>\\n#include <aomap_pars_fragment>\\n#include <lightmap_pars_fragment>\\n#include <envmap_common_pars_fragment>\\n#include <envmap_pars_fragment>\\n#include <cube_uv_reflection_fragment>\\n#include <fog_pars_fragment>\\n#include <specularmap_pars_fragment>\\n#include <logdepthbuf_pars_fragment>\\n#include <clipping_planes_pars_fragment>\\nvoid main() {\\n\\t#include <clipping_planes_fragment>\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\t#include <logdepthbuf_fragment>\\n\\t#include <map_fragment>\\n\\t#include <color_fragment>\\n\\t#include <alphamap_fragment>\\n\\t#include <alphatest_fragment>\\n\\t#include <specularmap_fragment>\\n\\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\\n\\t#ifdef USE_LIGHTMAP\\n\\t\\n\\t\\tvec4 lightMapTexel= texture2D( lightMap, vUv2 );\\n\\t\\treflectedLight.indirectDiffuse += lightMapTexelToLinear( lightMapTexel ).rgb * lightMapIntensity;\\n\\t#else\\n\\t\\treflectedLight.indirectDiffuse += vec3( 1.0 );\\n\\t#endif\\n\\t#include <aomap_fragment>\\n\\treflectedLight.indirectDiffuse *= diffuseColor.rgb;\\n\\tvec3 outgoingLight = reflectedLight.indirectDiffuse;\\n\\t#include <envmap_fragment>\\n\\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n\\t#include <fog_fragment>\\n\\t#include <premultiplied_alpha_fragment>\\n\\t#include <dithering_fragment>\\n}\";\n\nvar meshbasic_vert = \"#include <common>\\n#include <uv_pars_vertex>\\n#include <uv2_pars_vertex>\\n#include <envmap_pars_vertex>\\n#include <color_pars_vertex>\\n#include <fog_pars_vertex>\\n#include <morphtarget_pars_vertex>\\n#include <skinning_pars_vertex>\\n#include <logdepthbuf_pars_vertex>\\n#include <clipping_planes_pars_vertex>\\nvoid main() {\\n\\t#include <uv_vertex>\\n\\t#include <uv2_vertex>\\n\\t#include <color_vertex>\\n\\t#include <skinbase_vertex>\\n\\t#ifdef USE_ENVMAP\\n\\t#include <beginnormal_vertex>\\n\\t#include <morphnormal_vertex>\\n\\t#include <skinnormal_vertex>\\n\\t#include <defaultnormal_vertex>\\n\\t#endif\\n\\t#include <begin_vertex>\\n\\t#include <morphtarget_vertex>\\n\\t#include <skinning_vertex>\\n\\t#include <project_vertex>\\n\\t#include <logdepthbuf_vertex>\\n\\t#include <worldpos_vertex>\\n\\t#include <clipping_planes_vertex>\\n\\t#include <envmap_vertex>\\n\\t#include <fog_vertex>\\n}\";\n\nvar meshlambert_frag = \"uniform vec3 diffuse;\\nuniform vec3 emissive;\\nuniform float opacity;\\nvarying vec3 vLightFront;\\nvarying vec3 vIndirectFront;\\n#ifdef DOUBLE_SIDED\\n\\tvarying vec3 vLightBack;\\n\\tvarying vec3 vIndirectBack;\\n#endif\\n#include <common>\\n#include <packing>\\n#include <dithering_pars_fragment>\\n#include <color_pars_fragment>\\n#include <uv_pars_fragment>\\n#include <uv2_pars_fragment>\\n#include <map_pars_fragment>\\n#include <alphamap_pars_fragment>\\n#include <aomap_pars_fragment>\\n#include <lightmap_pars_fragment>\\n#include <emissivemap_pars_fragment>\\n#include <envmap_common_pars_fragment>\\n#include <envmap_pars_fragment>\\n#include <cube_uv_reflection_fragment>\\n#include <bsdfs>\\n#include <lights_pars_begin>\\n#include <fog_pars_fragment>\\n#include <shadowmap_pars_fragment>\\n#include <shadowmask_pars_fragment>\\n#include <specularmap_pars_fragment>\\n#include <logdepthbuf_pars_fragment>\\n#include <clipping_planes_pars_fragment>\\nvoid main() {\\n\\t#include <clipping_planes_fragment>\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\\n\\tvec3 totalEmissiveRadiance = emissive;\\n\\t#include <logdepthbuf_fragment>\\n\\t#include <map_fragment>\\n\\t#include <color_fragment>\\n\\t#include <alphamap_fragment>\\n\\t#include <alphatest_fragment>\\n\\t#include <specularmap_fragment>\\n\\t#include <emissivemap_fragment>\\n\\t#ifdef DOUBLE_SIDED\\n\\t\\treflectedLight.indirectDiffuse += ( gl_FrontFacing ) ? vIndirectFront : vIndirectBack;\\n\\t#else\\n\\t\\treflectedLight.indirectDiffuse += vIndirectFront;\\n\\t#endif\\n\\t#include <lightmap_fragment>\\n\\treflectedLight.indirectDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb );\\n\\t#ifdef DOUBLE_SIDED\\n\\t\\treflectedLight.directDiffuse = ( gl_FrontFacing ) ? vLightFront : vLightBack;\\n\\t#else\\n\\t\\treflectedLight.directDiffuse = vLightFront;\\n\\t#endif\\n\\treflectedLight.directDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb ) * getShadowMask();\\n\\t#include <aomap_fragment>\\n\\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\\n\\t#include <envmap_fragment>\\n\\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n\\t#include <fog_fragment>\\n\\t#include <premultiplied_alpha_fragment>\\n\\t#include <dithering_fragment>\\n}\";\n\nvar meshlambert_vert = \"#define LAMBERT\\nvarying vec3 vLightFront;\\nvarying vec3 vIndirectFront;\\n#ifdef DOUBLE_SIDED\\n\\tvarying vec3 vLightBack;\\n\\tvarying vec3 vIndirectBack;\\n#endif\\n#include <common>\\n#include <uv_pars_vertex>\\n#include <uv2_pars_vertex>\\n#include <envmap_pars_vertex>\\n#include <bsdfs>\\n#include <lights_pars_begin>\\n#include <color_pars_vertex>\\n#include <fog_pars_vertex>\\n#include <morphtarget_pars_vertex>\\n#include <skinning_pars_vertex>\\n#include <shadowmap_pars_vertex>\\n#include <logdepthbuf_pars_vertex>\\n#include <clipping_planes_pars_vertex>\\nvoid main() {\\n\\t#include <uv_vertex>\\n\\t#include <uv2_vertex>\\n\\t#include <color_vertex>\\n\\t#include <beginnormal_vertex>\\n\\t#include <morphnormal_vertex>\\n\\t#include <skinbase_vertex>\\n\\t#include <skinnormal_vertex>\\n\\t#include <defaultnormal_vertex>\\n\\t#include <begin_vertex>\\n\\t#include <morphtarget_vertex>\\n\\t#include <skinning_vertex>\\n\\t#include <project_vertex>\\n\\t#include <logdepthbuf_vertex>\\n\\t#include <clipping_planes_vertex>\\n\\t#include <worldpos_vertex>\\n\\t#include <envmap_vertex>\\n\\t#include <lights_lambert_vertex>\\n\\t#include <shadowmap_vertex>\\n\\t#include <fog_vertex>\\n}\";\n\nvar meshmatcap_frag = \"#define MATCAP\\nuniform vec3 diffuse;\\nuniform float opacity;\\nuniform sampler2D matcap;\\nvarying vec3 vViewPosition;\\n#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n#endif\\n#include <common>\\n#include <dithering_pars_fragment>\\n#include <color_pars_fragment>\\n#include <uv_pars_fragment>\\n#include <map_pars_fragment>\\n#include <alphamap_pars_fragment>\\n#include <fog_pars_fragment>\\n#include <bumpmap_pars_fragment>\\n#include <normalmap_pars_fragment>\\n#include <logdepthbuf_pars_fragment>\\n#include <clipping_planes_pars_fragment>\\nvoid main() {\\n\\t#include <clipping_planes_fragment>\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\t#include <logdepthbuf_fragment>\\n\\t#include <map_fragment>\\n\\t#include <color_fragment>\\n\\t#include <alphamap_fragment>\\n\\t#include <alphatest_fragment>\\n\\t#include <normal_fragment_begin>\\n\\t#include <normal_fragment_maps>\\n\\tvec3 viewDir = normalize( vViewPosition );\\n\\tvec3 x = normalize( vec3( viewDir.z, 0.0, - viewDir.x ) );\\n\\tvec3 y = cross( viewDir, x );\\n\\tvec2 uv = vec2( dot( x, normal ), dot( y, normal ) ) * 0.495 + 0.5;\\n\\t#ifdef USE_MATCAP\\n\\t\\tvec4 matcapColor = texture2D( matcap, uv );\\n\\t\\tmatcapColor = matcapTexelToLinear( matcapColor );\\n\\t#else\\n\\t\\tvec4 matcapColor = vec4( 1.0 );\\n\\t#endif\\n\\tvec3 outgoingLight = diffuseColor.rgb * matcapColor.rgb;\\n\\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n\\t#include <fog_fragment>\\n\\t#include <premultiplied_alpha_fragment>\\n\\t#include <dithering_fragment>\\n}\";\n\nvar meshmatcap_vert = \"#define MATCAP\\nvarying vec3 vViewPosition;\\n#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n#endif\\n#include <common>\\n#include <uv_pars_vertex>\\n#include <color_pars_vertex>\\n#include <displacementmap_pars_vertex>\\n#include <fog_pars_vertex>\\n#include <morphtarget_pars_vertex>\\n#include <skinning_pars_vertex>\\n#include <logdepthbuf_pars_vertex>\\n#include <clipping_planes_pars_vertex>\\nvoid main() {\\n\\t#include <uv_vertex>\\n\\t#include <color_vertex>\\n\\t#include <beginnormal_vertex>\\n\\t#include <morphnormal_vertex>\\n\\t#include <skinbase_vertex>\\n\\t#include <skinnormal_vertex>\\n\\t#include <defaultnormal_vertex>\\n\\t#ifndef FLAT_SHADED\\n\\t\\tvNormal = normalize( transformedNormal );\\n\\t#endif\\n\\t#include <begin_vertex>\\n\\t#include <morphtarget_vertex>\\n\\t#include <skinning_vertex>\\n\\t#include <displacementmap_vertex>\\n\\t#include <project_vertex>\\n\\t#include <logdepthbuf_vertex>\\n\\t#include <clipping_planes_vertex>\\n\\t#include <fog_vertex>\\n\\tvViewPosition = - mvPosition.xyz;\\n}\";\n\nvar meshtoon_frag = \"#define TOON\\nuniform vec3 diffuse;\\nuniform vec3 emissive;\\nuniform float opacity;\\n#include <common>\\n#include <packing>\\n#include <dithering_pars_fragment>\\n#include <color_pars_fragment>\\n#include <uv_pars_fragment>\\n#include <uv2_pars_fragment>\\n#include <map_pars_fragment>\\n#include <alphamap_pars_fragment>\\n#include <aomap_pars_fragment>\\n#include <lightmap_pars_fragment>\\n#include <emissivemap_pars_fragment>\\n#include <gradientmap_pars_fragment>\\n#include <fog_pars_fragment>\\n#include <bsdfs>\\n#include <lights_pars_begin>\\n#include <lights_toon_pars_fragment>\\n#include <shadowmap_pars_fragment>\\n#include <bumpmap_pars_fragment>\\n#include <normalmap_pars_fragment>\\n#include <logdepthbuf_pars_fragment>\\n#include <clipping_planes_pars_fragment>\\nvoid main() {\\n\\t#include <clipping_planes_fragment>\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\\n\\tvec3 totalEmissiveRadiance = emissive;\\n\\t#include <logdepthbuf_fragment>\\n\\t#include <map_fragment>\\n\\t#include <color_fragment>\\n\\t#include <alphamap_fragment>\\n\\t#include <alphatest_fragment>\\n\\t#include <normal_fragment_begin>\\n\\t#include <normal_fragment_maps>\\n\\t#include <emissivemap_fragment>\\n\\t#include <lights_toon_fragment>\\n\\t#include <lights_fragment_begin>\\n\\t#include <lights_fragment_maps>\\n\\t#include <lights_fragment_end>\\n\\t#include <aomap_fragment>\\n\\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\\n\\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n\\t#include <fog_fragment>\\n\\t#include <premultiplied_alpha_fragment>\\n\\t#include <dithering_fragment>\\n}\";\n\nvar meshtoon_vert = \"#define TOON\\nvarying vec3 vViewPosition;\\n#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n#endif\\n#include <common>\\n#include <uv_pars_vertex>\\n#include <uv2_pars_vertex>\\n#include <displacementmap_pars_vertex>\\n#include <color_pars_vertex>\\n#include <fog_pars_vertex>\\n#include <morphtarget_pars_vertex>\\n#include <skinning_pars_vertex>\\n#include <shadowmap_pars_vertex>\\n#include <logdepthbuf_pars_vertex>\\n#include <clipping_planes_pars_vertex>\\nvoid main() {\\n\\t#include <uv_vertex>\\n\\t#include <uv2_vertex>\\n\\t#include <color_vertex>\\n\\t#include <beginnormal_vertex>\\n\\t#include <morphnormal_vertex>\\n\\t#include <skinbase_vertex>\\n\\t#include <skinnormal_vertex>\\n\\t#include <defaultnormal_vertex>\\n#ifndef FLAT_SHADED\\n\\tvNormal = normalize( transformedNormal );\\n#endif\\n\\t#include <begin_vertex>\\n\\t#include <morphtarget_vertex>\\n\\t#include <skinning_vertex>\\n\\t#include <displacementmap_vertex>\\n\\t#include <project_vertex>\\n\\t#include <logdepthbuf_vertex>\\n\\t#include <clipping_planes_vertex>\\n\\tvViewPosition = - mvPosition.xyz;\\n\\t#include <worldpos_vertex>\\n\\t#include <shadowmap_vertex>\\n\\t#include <fog_vertex>\\n}\";\n\nvar meshphong_frag = \"#define PHONG\\nuniform vec3 diffuse;\\nuniform vec3 emissive;\\nuniform vec3 specular;\\nuniform float shininess;\\nuniform float opacity;\\n#include <common>\\n#include <packing>\\n#include <dithering_pars_fragment>\\n#include <color_pars_fragment>\\n#include <uv_pars_fragment>\\n#include <uv2_pars_fragment>\\n#include <map_pars_fragment>\\n#include <alphamap_pars_fragment>\\n#include <aomap_pars_fragment>\\n#include <lightmap_pars_fragment>\\n#include <emissivemap_pars_fragment>\\n#include <envmap_common_pars_fragment>\\n#include <envmap_pars_fragment>\\n#include <cube_uv_reflection_fragment>\\n#include <fog_pars_fragment>\\n#include <bsdfs>\\n#include <lights_pars_begin>\\n#include <lights_phong_pars_fragment>\\n#include <shadowmap_pars_fragment>\\n#include <bumpmap_pars_fragment>\\n#include <normalmap_pars_fragment>\\n#include <specularmap_pars_fragment>\\n#include <logdepthbuf_pars_fragment>\\n#include <clipping_planes_pars_fragment>\\nvoid main() {\\n\\t#include <clipping_planes_fragment>\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\\n\\tvec3 totalEmissiveRadiance = emissive;\\n\\t#include <logdepthbuf_fragment>\\n\\t#include <map_fragment>\\n\\t#include <color_fragment>\\n\\t#include <alphamap_fragment>\\n\\t#include <alphatest_fragment>\\n\\t#include <specularmap_fragment>\\n\\t#include <normal_fragment_begin>\\n\\t#include <normal_fragment_maps>\\n\\t#include <emissivemap_fragment>\\n\\t#include <lights_phong_fragment>\\n\\t#include <lights_fragment_begin>\\n\\t#include <lights_fragment_maps>\\n\\t#include <lights_fragment_end>\\n\\t#include <aomap_fragment>\\n\\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;\\n\\t#include <envmap_fragment>\\n\\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n\\t#include <fog_fragment>\\n\\t#include <premultiplied_alpha_fragment>\\n\\t#include <dithering_fragment>\\n}\";\n\nvar meshphong_vert = \"#define PHONG\\nvarying vec3 vViewPosition;\\n#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n#endif\\n#include <common>\\n#include <uv_pars_vertex>\\n#include <uv2_pars_vertex>\\n#include <displacementmap_pars_vertex>\\n#include <envmap_pars_vertex>\\n#include <color_pars_vertex>\\n#include <fog_pars_vertex>\\n#include <morphtarget_pars_vertex>\\n#include <skinning_pars_vertex>\\n#include <shadowmap_pars_vertex>\\n#include <logdepthbuf_pars_vertex>\\n#include <clipping_planes_pars_vertex>\\nvoid main() {\\n\\t#include <uv_vertex>\\n\\t#include <uv2_vertex>\\n\\t#include <color_vertex>\\n\\t#include <beginnormal_vertex>\\n\\t#include <morphnormal_vertex>\\n\\t#include <skinbase_vertex>\\n\\t#include <skinnormal_vertex>\\n\\t#include <defaultnormal_vertex>\\n#ifndef FLAT_SHADED\\n\\tvNormal = normalize( transformedNormal );\\n#endif\\n\\t#include <begin_vertex>\\n\\t#include <morphtarget_vertex>\\n\\t#include <skinning_vertex>\\n\\t#include <displacementmap_vertex>\\n\\t#include <project_vertex>\\n\\t#include <logdepthbuf_vertex>\\n\\t#include <clipping_planes_vertex>\\n\\tvViewPosition = - mvPosition.xyz;\\n\\t#include <worldpos_vertex>\\n\\t#include <envmap_vertex>\\n\\t#include <shadowmap_vertex>\\n\\t#include <fog_vertex>\\n}\";\n\nvar meshphysical_frag = \"#define STANDARD\\n#ifdef PHYSICAL\\n\\t#define REFLECTIVITY\\n\\t#define CLEARCOAT\\n\\t#define TRANSMISSION\\n#endif\\nuniform vec3 diffuse;\\nuniform vec3 emissive;\\nuniform float roughness;\\nuniform float metalness;\\nuniform float opacity;\\n#ifdef TRANSMISSION\\n\\tuniform float transmission;\\n#endif\\n#ifdef REFLECTIVITY\\n\\tuniform float reflectivity;\\n#endif\\n#ifdef CLEARCOAT\\n\\tuniform float clearcoat;\\n\\tuniform float clearcoatRoughness;\\n#endif\\n#ifdef USE_SHEEN\\n\\tuniform vec3 sheen;\\n#endif\\nvarying vec3 vViewPosition;\\n#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n\\t#ifdef USE_TANGENT\\n\\t\\tvarying vec3 vTangent;\\n\\t\\tvarying vec3 vBitangent;\\n\\t#endif\\n#endif\\n#include <common>\\n#include <packing>\\n#include <dithering_pars_fragment>\\n#include <color_pars_fragment>\\n#include <uv_pars_fragment>\\n#include <uv2_pars_fragment>\\n#include <map_pars_fragment>\\n#include <alphamap_pars_fragment>\\n#include <aomap_pars_fragment>\\n#include <lightmap_pars_fragment>\\n#include <emissivemap_pars_fragment>\\n#include <transmissionmap_pars_fragment>\\n#include <bsdfs>\\n#include <cube_uv_reflection_fragment>\\n#include <envmap_common_pars_fragment>\\n#include <envmap_physical_pars_fragment>\\n#include <fog_pars_fragment>\\n#include <lights_pars_begin>\\n#include <lights_physical_pars_fragment>\\n#include <shadowmap_pars_fragment>\\n#include <bumpmap_pars_fragment>\\n#include <normalmap_pars_fragment>\\n#include <clearcoat_pars_fragment>\\n#include <roughnessmap_pars_fragment>\\n#include <metalnessmap_pars_fragment>\\n#include <logdepthbuf_pars_fragment>\\n#include <clipping_planes_pars_fragment>\\nvoid main() {\\n\\t#include <clipping_planes_fragment>\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\\n\\tvec3 totalEmissiveRadiance = emissive;\\n\\t#ifdef TRANSMISSION\\n\\t\\tfloat totalTransmission = transmission;\\n\\t#endif\\n\\t#include <logdepthbuf_fragment>\\n\\t#include <map_fragment>\\n\\t#include <color_fragment>\\n\\t#include <alphamap_fragment>\\n\\t#include <alphatest_fragment>\\n\\t#include <roughnessmap_fragment>\\n\\t#include <metalnessmap_fragment>\\n\\t#include <normal_fragment_begin>\\n\\t#include <normal_fragment_maps>\\n\\t#include <clearcoat_normal_fragment_begin>\\n\\t#include <clearcoat_normal_fragment_maps>\\n\\t#include <emissivemap_fragment>\\n\\t#include <transmissionmap_fragment>\\n\\t#include <lights_physical_fragment>\\n\\t#include <lights_fragment_begin>\\n\\t#include <lights_fragment_maps>\\n\\t#include <lights_fragment_end>\\n\\t#include <aomap_fragment>\\n\\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;\\n\\t#ifdef TRANSMISSION\\n\\t\\tdiffuseColor.a *= mix( saturate( 1. - totalTransmission + linearToRelativeLuminance( reflectedLight.directSpecular + reflectedLight.indirectSpecular ) ), 1.0, metalness );\\n\\t#endif\\n\\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n\\t#include <fog_fragment>\\n\\t#include <premultiplied_alpha_fragment>\\n\\t#include <dithering_fragment>\\n}\";\n\nvar meshphysical_vert = \"#define STANDARD\\nvarying vec3 vViewPosition;\\n#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n\\t#ifdef USE_TANGENT\\n\\t\\tvarying vec3 vTangent;\\n\\t\\tvarying vec3 vBitangent;\\n\\t#endif\\n#endif\\n#include <common>\\n#include <uv_pars_vertex>\\n#include <uv2_pars_vertex>\\n#include <displacementmap_pars_vertex>\\n#include <color_pars_vertex>\\n#include <fog_pars_vertex>\\n#include <morphtarget_pars_vertex>\\n#include <skinning_pars_vertex>\\n#include <shadowmap_pars_vertex>\\n#include <logdepthbuf_pars_vertex>\\n#include <clipping_planes_pars_vertex>\\nvoid main() {\\n\\t#include <uv_vertex>\\n\\t#include <uv2_vertex>\\n\\t#include <color_vertex>\\n\\t#include <beginnormal_vertex>\\n\\t#include <morphnormal_vertex>\\n\\t#include <skinbase_vertex>\\n\\t#include <skinnormal_vertex>\\n\\t#include <defaultnormal_vertex>\\n#ifndef FLAT_SHADED\\n\\tvNormal = normalize( transformedNormal );\\n\\t#ifdef USE_TANGENT\\n\\t\\tvTangent = normalize( transformedTangent );\\n\\t\\tvBitangent = normalize( cross( vNormal, vTangent ) * tangent.w );\\n\\t#endif\\n#endif\\n\\t#include <begin_vertex>\\n\\t#include <morphtarget_vertex>\\n\\t#include <skinning_vertex>\\n\\t#include <displacementmap_vertex>\\n\\t#include <project_vertex>\\n\\t#include <logdepthbuf_vertex>\\n\\t#include <clipping_planes_vertex>\\n\\tvViewPosition = - mvPosition.xyz;\\n\\t#include <worldpos_vertex>\\n\\t#include <shadowmap_vertex>\\n\\t#include <fog_vertex>\\n}\";\n\nvar normal_frag = \"#define NORMAL\\nuniform float opacity;\\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\\n\\tvarying vec3 vViewPosition;\\n#endif\\n#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n\\t#ifdef USE_TANGENT\\n\\t\\tvarying vec3 vTangent;\\n\\t\\tvarying vec3 vBitangent;\\n\\t#endif\\n#endif\\n#include <packing>\\n#include <uv_pars_fragment>\\n#include <bumpmap_pars_fragment>\\n#include <normalmap_pars_fragment>\\n#include <logdepthbuf_pars_fragment>\\n#include <clipping_planes_pars_fragment>\\nvoid main() {\\n\\t#include <clipping_planes_fragment>\\n\\t#include <logdepthbuf_fragment>\\n\\t#include <normal_fragment_begin>\\n\\t#include <normal_fragment_maps>\\n\\tgl_FragColor = vec4( packNormalToRGB( normal ), opacity );\\n}\";\n\nvar normal_vert = \"#define NORMAL\\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\\n\\tvarying vec3 vViewPosition;\\n#endif\\n#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n\\t#ifdef USE_TANGENT\\n\\t\\tvarying vec3 vTangent;\\n\\t\\tvarying vec3 vBitangent;\\n\\t#endif\\n#endif\\n#include <common>\\n#include <uv_pars_vertex>\\n#include <displacementmap_pars_vertex>\\n#include <morphtarget_pars_vertex>\\n#include <skinning_pars_vertex>\\n#include <logdepthbuf_pars_vertex>\\n#include <clipping_planes_pars_vertex>\\nvoid main() {\\n\\t#include <uv_vertex>\\n\\t#include <beginnormal_vertex>\\n\\t#include <morphnormal_vertex>\\n\\t#include <skinbase_vertex>\\n\\t#include <skinnormal_vertex>\\n\\t#include <defaultnormal_vertex>\\n#ifndef FLAT_SHADED\\n\\tvNormal = normalize( transformedNormal );\\n\\t#ifdef USE_TANGENT\\n\\t\\tvTangent = normalize( transformedTangent );\\n\\t\\tvBitangent = normalize( cross( vNormal, vTangent ) * tangent.w );\\n\\t#endif\\n#endif\\n\\t#include <begin_vertex>\\n\\t#include <morphtarget_vertex>\\n\\t#include <skinning_vertex>\\n\\t#include <displacementmap_vertex>\\n\\t#include <project_vertex>\\n\\t#include <logdepthbuf_vertex>\\n\\t#include <clipping_planes_vertex>\\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\\n\\tvViewPosition = - mvPosition.xyz;\\n#endif\\n}\";\n\nvar points_frag = \"uniform vec3 diffuse;\\nuniform float opacity;\\n#include <common>\\n#include <color_pars_fragment>\\n#include <map_particle_pars_fragment>\\n#include <fog_pars_fragment>\\n#include <logdepthbuf_pars_fragment>\\n#include <clipping_planes_pars_fragment>\\nvoid main() {\\n\\t#include <clipping_planes_fragment>\\n\\tvec3 outgoingLight = vec3( 0.0 );\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\t#include <logdepthbuf_fragment>\\n\\t#include <map_particle_fragment>\\n\\t#include <color_fragment>\\n\\t#include <alphatest_fragment>\\n\\toutgoingLight = diffuseColor.rgb;\\n\\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n\\t#include <fog_fragment>\\n\\t#include <premultiplied_alpha_fragment>\\n}\";\n\nvar points_vert = \"uniform float size;\\nuniform float scale;\\n#include <common>\\n#include <color_pars_vertex>\\n#include <fog_pars_vertex>\\n#include <morphtarget_pars_vertex>\\n#include <logdepthbuf_pars_vertex>\\n#include <clipping_planes_pars_vertex>\\nvoid main() {\\n\\t#include <color_vertex>\\n\\t#include <begin_vertex>\\n\\t#include <morphtarget_vertex>\\n\\t#include <project_vertex>\\n\\tgl_PointSize = size;\\n\\t#ifdef USE_SIZEATTENUATION\\n\\t\\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\\n\\t\\tif ( isPerspective ) gl_PointSize *= ( scale / - mvPosition.z );\\n\\t#endif\\n\\t#include <logdepthbuf_vertex>\\n\\t#include <clipping_planes_vertex>\\n\\t#include <worldpos_vertex>\\n\\t#include <fog_vertex>\\n}\";\n\nvar shadow_frag = \"uniform vec3 color;\\nuniform float opacity;\\n#include <common>\\n#include <packing>\\n#include <fog_pars_fragment>\\n#include <bsdfs>\\n#include <lights_pars_begin>\\n#include <shadowmap_pars_fragment>\\n#include <shadowmask_pars_fragment>\\nvoid main() {\\n\\tgl_FragColor = vec4( color, opacity * ( 1.0 - getShadowMask() ) );\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n\\t#include <fog_fragment>\\n}\";\n\nvar shadow_vert = \"#include <common>\\n#include <fog_pars_vertex>\\n#include <shadowmap_pars_vertex>\\nvoid main() {\\n\\t#include <begin_vertex>\\n\\t#include <project_vertex>\\n\\t#include <worldpos_vertex>\\n\\t#include <beginnormal_vertex>\\n\\t#include <morphnormal_vertex>\\n\\t#include <skinbase_vertex>\\n\\t#include <skinnormal_vertex>\\n\\t#include <defaultnormal_vertex>\\n\\t#include <shadowmap_vertex>\\n\\t#include <fog_vertex>\\n}\";\n\nvar sprite_frag = \"uniform vec3 diffuse;\\nuniform float opacity;\\n#include <common>\\n#include <uv_pars_fragment>\\n#include <map_pars_fragment>\\n#include <alphamap_pars_fragment>\\n#include <fog_pars_fragment>\\n#include <logdepthbuf_pars_fragment>\\n#include <clipping_planes_pars_fragment>\\nvoid main() {\\n\\t#include <clipping_planes_fragment>\\n\\tvec3 outgoingLight = vec3( 0.0 );\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\t#include <logdepthbuf_fragment>\\n\\t#include <map_fragment>\\n\\t#include <alphamap_fragment>\\n\\t#include <alphatest_fragment>\\n\\toutgoingLight = diffuseColor.rgb;\\n\\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\\n\\t#include <tonemapping_fragment>\\n\\t#include <encodings_fragment>\\n\\t#include <fog_fragment>\\n}\";\n\nvar sprite_vert = \"uniform float rotation;\\nuniform vec2 center;\\n#include <common>\\n#include <uv_pars_vertex>\\n#include <fog_pars_vertex>\\n#include <logdepthbuf_pars_vertex>\\n#include <clipping_planes_pars_vertex>\\nvoid main() {\\n\\t#include <uv_vertex>\\n\\tvec4 mvPosition = modelViewMatrix * vec4( 0.0, 0.0, 0.0, 1.0 );\\n\\tvec2 scale;\\n\\tscale.x = length( vec3( modelMatrix[ 0 ].x, modelMatrix[ 0 ].y, modelMatrix[ 0 ].z ) );\\n\\tscale.y = length( vec3( modelMatrix[ 1 ].x, modelMatrix[ 1 ].y, modelMatrix[ 1 ].z ) );\\n\\t#ifndef USE_SIZEATTENUATION\\n\\t\\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\\n\\t\\tif ( isPerspective ) scale *= - mvPosition.z;\\n\\t#endif\\n\\tvec2 alignedPosition = ( position.xy - ( center - vec2( 0.5 ) ) ) * scale;\\n\\tvec2 rotatedPosition;\\n\\trotatedPosition.x = cos( rotation ) * alignedPosition.x - sin( rotation ) * alignedPosition.y;\\n\\trotatedPosition.y = sin( rotation ) * alignedPosition.x + cos( rotation ) * alignedPosition.y;\\n\\tmvPosition.xy += rotatedPosition;\\n\\tgl_Position = projectionMatrix * mvPosition;\\n\\t#include <logdepthbuf_vertex>\\n\\t#include <clipping_planes_vertex>\\n\\t#include <fog_vertex>\\n}\";\n\nconst ShaderChunk = {\n\talphamap_fragment: alphamap_fragment,\n\talphamap_pars_fragment: alphamap_pars_fragment,\n\talphatest_fragment: alphatest_fragment,\n\taomap_fragment: aomap_fragment,\n\taomap_pars_fragment: aomap_pars_fragment,\n\tbegin_vertex: begin_vertex,\n\tbeginnormal_vertex: beginnormal_vertex,\n\tbsdfs: bsdfs,\n\tbumpmap_pars_fragment: bumpmap_pars_fragment,\n\tclipping_planes_fragment: clipping_planes_fragment,\n\tclipping_planes_pars_fragment: clipping_planes_pars_fragment,\n\tclipping_planes_pars_vertex: clipping_planes_pars_vertex,\n\tclipping_planes_vertex: clipping_planes_vertex,\n\tcolor_fragment: color_fragment,\n\tcolor_pars_fragment: color_pars_fragment,\n\tcolor_pars_vertex: color_pars_vertex,\n\tcolor_vertex: color_vertex,\n\tcommon: common,\n\tcube_uv_reflection_fragment: cube_uv_reflection_fragment,\n\tdefaultnormal_vertex: defaultnormal_vertex,\n\tdisplacementmap_pars_vertex: displacementmap_pars_vertex,\n\tdisplacementmap_vertex: displacementmap_vertex,\n\temissivemap_fragment: emissivemap_fragment,\n\temissivemap_pars_fragment: emissivemap_pars_fragment,\n\tencodings_fragment: encodings_fragment,\n\tencodings_pars_fragment: encodings_pars_fragment,\n\tenvmap_fragment: envmap_fragment,\n\tenvmap_common_pars_fragment: envmap_common_pars_fragment,\n\tenvmap_pars_fragment: envmap_pars_fragment,\n\tenvmap_pars_vertex: envmap_pars_vertex,\n\tenvmap_physical_pars_fragment: envmap_physical_pars_fragment,\n\tenvmap_vertex: envmap_vertex,\n\tfog_vertex: fog_vertex,\n\tfog_pars_vertex: fog_pars_vertex,\n\tfog_fragment: fog_fragment,\n\tfog_pars_fragment: fog_pars_fragment,\n\tgradientmap_pars_fragment: gradientmap_pars_fragment,\n\tlightmap_fragment: lightmap_fragment,\n\tlightmap_pars_fragment: lightmap_pars_fragment,\n\tlights_lambert_vertex: lights_lambert_vertex,\n\tlights_pars_begin: lights_pars_begin,\n\tlights_toon_fragment: lights_toon_fragment,\n\tlights_toon_pars_fragment: lights_toon_pars_fragment,\n\tlights_phong_fragment: lights_phong_fragment,\n\tlights_phong_pars_fragment: lights_phong_pars_fragment,\n\tlights_physical_fragment: lights_physical_fragment,\n\tlights_physical_pars_fragment: lights_physical_pars_fragment,\n\tlights_fragment_begin: lights_fragment_begin,\n\tlights_fragment_maps: lights_fragment_maps,\n\tlights_fragment_end: lights_fragment_end,\n\tlogdepthbuf_fragment: logdepthbuf_fragment,\n\tlogdepthbuf_pars_fragment: logdepthbuf_pars_fragment,\n\tlogdepthbuf_pars_vertex: logdepthbuf_pars_vertex,\n\tlogdepthbuf_vertex: logdepthbuf_vertex,\n\tmap_fragment: map_fragment,\n\tmap_pars_fragment: map_pars_fragment,\n\tmap_particle_fragment: map_particle_fragment,\n\tmap_particle_pars_fragment: map_particle_pars_fragment,\n\tmetalnessmap_fragment: metalnessmap_fragment,\n\tmetalnessmap_pars_fragment: metalnessmap_pars_fragment,\n\tmorphnormal_vertex: morphnormal_vertex,\n\tmorphtarget_pars_vertex: morphtarget_pars_vertex,\n\tmorphtarget_vertex: morphtarget_vertex,\n\tnormal_fragment_begin: normal_fragment_begin,\n\tnormal_fragment_maps: normal_fragment_maps,\n\tnormalmap_pars_fragment: normalmap_pars_fragment,\n\tclearcoat_normal_fragment_begin: clearcoat_normal_fragment_begin,\n\tclearcoat_normal_fragment_maps: clearcoat_normal_fragment_maps,\n\tclearcoat_pars_fragment: clearcoat_pars_fragment,\n\tpacking: packing,\n\tpremultiplied_alpha_fragment: premultiplied_alpha_fragment,\n\tproject_vertex: project_vertex,\n\tdithering_fragment: dithering_fragment,\n\tdithering_pars_fragment: dithering_pars_fragment,\n\troughnessmap_fragment: roughnessmap_fragment,\n\troughnessmap_pars_fragment: roughnessmap_pars_fragment,\n\tshadowmap_pars_fragment: shadowmap_pars_fragment,\n\tshadowmap_pars_vertex: shadowmap_pars_vertex,\n\tshadowmap_vertex: shadowmap_vertex,\n\tshadowmask_pars_fragment: shadowmask_pars_fragment,\n\tskinbase_vertex: skinbase_vertex,\n\tskinning_pars_vertex: skinning_pars_vertex,\n\tskinning_vertex: skinning_vertex,\n\tskinnormal_vertex: skinnormal_vertex,\n\tspecularmap_fragment: specularmap_fragment,\n\tspecularmap_pars_fragment: specularmap_pars_fragment,\n\ttonemapping_fragment: tonemapping_fragment,\n\ttonemapping_pars_fragment: tonemapping_pars_fragment,\n\ttransmissionmap_fragment: transmissionmap_fragment,\n\ttransmissionmap_pars_fragment: transmissionmap_pars_fragment,\n\tuv_pars_fragment: uv_pars_fragment,\n\tuv_pars_vertex: uv_pars_vertex,\n\tuv_vertex: uv_vertex,\n\tuv2_pars_fragment: uv2_pars_fragment,\n\tuv2_pars_vertex: uv2_pars_vertex,\n\tuv2_vertex: uv2_vertex,\n\tworldpos_vertex: worldpos_vertex,\n\n\tbackground_frag: background_frag,\n\tbackground_vert: background_vert,\n\tcube_frag: cube_frag,\n\tcube_vert: cube_vert,\n\tdepth_frag: depth_frag,\n\tdepth_vert: depth_vert,\n\tdistanceRGBA_frag: distanceRGBA_frag,\n\tdistanceRGBA_vert: distanceRGBA_vert,\n\tequirect_frag: equirect_frag,\n\tequirect_vert: equirect_vert,\n\tlinedashed_frag: linedashed_frag,\n\tlinedashed_vert: linedashed_vert,\n\tmeshbasic_frag: meshbasic_frag,\n\tmeshbasic_vert: meshbasic_vert,\n\tmeshlambert_frag: meshlambert_frag,\n\tmeshlambert_vert: meshlambert_vert,\n\tmeshmatcap_frag: meshmatcap_frag,\n\tmeshmatcap_vert: meshmatcap_vert,\n\tmeshtoon_frag: meshtoon_frag,\n\tmeshtoon_vert: meshtoon_vert,\n\tmeshphong_frag: meshphong_frag,\n\tmeshphong_vert: meshphong_vert,\n\tmeshphysical_frag: meshphysical_frag,\n\tmeshphysical_vert: meshphysical_vert,\n\tnormal_frag: normal_frag,\n\tnormal_vert: normal_vert,\n\tpoints_frag: points_frag,\n\tpoints_vert: points_vert,\n\tshadow_frag: shadow_frag,\n\tshadow_vert: shadow_vert,\n\tsprite_frag: sprite_frag,\n\tsprite_vert: sprite_vert\n};\n\n/**\n * Uniforms library for shared webgl shaders\n */\n\nconst UniformsLib = {\n\n\tcommon: {\n\n\t\tdiffuse: { value: new Color( 0xeeeeee ) },\n\t\topacity: { value: 1.0 },\n\n\t\tmap: { value: null },\n\t\tuvTransform: { value: new Matrix3() },\n\t\tuv2Transform: { value: new Matrix3() },\n\n\t\talphaMap: { value: null },\n\n\t},\n\n\tspecularmap: {\n\n\t\tspecularMap: { value: null },\n\n\t},\n\n\tenvmap: {\n\n\t\tenvMap: { value: null },\n\t\tflipEnvMap: { value: - 1 },\n\t\treflectivity: { value: 1.0 },\n\t\trefractionRatio: { value: 0.98 },\n\t\tmaxMipLevel: { value: 0 }\n\n\t},\n\n\taomap: {\n\n\t\taoMap: { value: null },\n\t\taoMapIntensity: { value: 1 }\n\n\t},\n\n\tlightmap: {\n\n\t\tlightMap: { value: null },\n\t\tlightMapIntensity: { value: 1 }\n\n\t},\n\n\temissivemap: {\n\n\t\temissiveMap: { value: null }\n\n\t},\n\n\tbumpmap: {\n\n\t\tbumpMap: { value: null },\n\t\tbumpScale: { value: 1 }\n\n\t},\n\n\tnormalmap: {\n\n\t\tnormalMap: { value: null },\n\t\tnormalScale: { value: new Vector2( 1, 1 ) }\n\n\t},\n\n\tdisplacementmap: {\n\n\t\tdisplacementMap: { value: null },\n\t\tdisplacementScale: { value: 1 },\n\t\tdisplacementBias: { value: 0 }\n\n\t},\n\n\troughnessmap: {\n\n\t\troughnessMap: { value: null }\n\n\t},\n\n\tmetalnessmap: {\n\n\t\tmetalnessMap: { value: null }\n\n\t},\n\n\tgradientmap: {\n\n\t\tgradientMap: { value: null }\n\n\t},\n\n\tfog: {\n\n\t\tfogDensity: { value: 0.00025 },\n\t\tfogNear: { value: 1 },\n\t\tfogFar: { value: 2000 },\n\t\tfogColor: { value: new Color( 0xffffff ) }\n\n\t},\n\n\tlights: {\n\n\t\tambientLightColor: { value: [] },\n\n\t\tlightProbe: { value: [] },\n\n\t\tdirectionalLights: { value: [], properties: {\n\t\t\tdirection: {},\n\t\t\tcolor: {}\n\t\t} },\n\n\t\tdirectionalLightShadows: { value: [], properties: {\n\t\t\tshadowBias: {},\n\t\t\tshadowNormalBias: {},\n\t\t\tshadowRadius: {},\n\t\t\tshadowMapSize: {}\n\t\t} },\n\n\t\tdirectionalShadowMap: { value: [] },\n\t\tdirectionalShadowMatrix: { value: [] },\n\n\t\tspotLights: { value: [], properties: {\n\t\t\tcolor: {},\n\t\t\tposition: {},\n\t\t\tdirection: {},\n\t\t\tdistance: {},\n\t\t\tconeCos: {},\n\t\t\tpenumbraCos: {},\n\t\t\tdecay: {}\n\t\t} },\n\n\t\tspotLightShadows: { value: [], properties: {\n\t\t\tshadowBias: {},\n\t\t\tshadowNormalBias: {},\n\t\t\tshadowRadius: {},\n\t\t\tshadowMapSize: {}\n\t\t} },\n\n\t\tspotShadowMap: { value: [] },\n\t\tspotShadowMatrix: { value: [] },\n\n\t\tpointLights: { value: [], properties: {\n\t\t\tcolor: {},\n\t\t\tposition: {},\n\t\t\tdecay: {},\n\t\t\tdistance: {}\n\t\t} },\n\n\t\tpointLightShadows: { value: [], properties: {\n\t\t\tshadowBias: {},\n\t\t\tshadowNormalBias: {},\n\t\t\tshadowRadius: {},\n\t\t\tshadowMapSize: {},\n\t\t\tshadowCameraNear: {},\n\t\t\tshadowCameraFar: {}\n\t\t} },\n\n\t\tpointShadowMap: { value: [] },\n\t\tpointShadowMatrix: { value: [] },\n\n\t\themisphereLights: { value: [], properties: {\n\t\t\tdirection: {},\n\t\t\tskyColor: {},\n\t\t\tgroundColor: {}\n\t\t} },\n\n\t\t// TODO (abelnation): RectAreaLight BRDF data needs to be moved from example to main src\n\t\trectAreaLights: { value: [], properties: {\n\t\t\tcolor: {},\n\t\t\tposition: {},\n\t\t\twidth: {},\n\t\t\theight: {}\n\t\t} },\n\n\t\tltc_1: { value: null },\n\t\tltc_2: { value: null }\n\n\t},\n\n\tpoints: {\n\n\t\tdiffuse: { value: new Color( 0xeeeeee ) },\n\t\topacity: { value: 1.0 },\n\t\tsize: { value: 1.0 },\n\t\tscale: { value: 1.0 },\n\t\tmap: { value: null },\n\t\talphaMap: { value: null },\n\t\tuvTransform: { value: new Matrix3() }\n\n\t},\n\n\tsprite: {\n\n\t\tdiffuse: { value: new Color( 0xeeeeee ) },\n\t\topacity: { value: 1.0 },\n\t\tcenter: { value: new Vector2( 0.5, 0.5 ) },\n\t\trotation: { value: 0.0 },\n\t\tmap: { value: null },\n\t\talphaMap: { value: null },\n\t\tuvTransform: { value: new Matrix3() }\n\n\t}\n\n};\n\nconst ShaderLib = {\n\n\tbasic: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.specularmap,\n\t\t\tUniformsLib.envmap,\n\t\t\tUniformsLib.aomap,\n\t\t\tUniformsLib.lightmap,\n\t\t\tUniformsLib.fog\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.meshbasic_vert,\n\t\tfragmentShader: ShaderChunk.meshbasic_frag\n\n\t},\n\n\tlambert: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.specularmap,\n\t\t\tUniformsLib.envmap,\n\t\t\tUniformsLib.aomap,\n\t\t\tUniformsLib.lightmap,\n\t\t\tUniformsLib.emissivemap,\n\t\t\tUniformsLib.fog,\n\t\t\tUniformsLib.lights,\n\t\t\t{\n\t\t\t\temissive: { value: new Color( 0x000000 ) }\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.meshlambert_vert,\n\t\tfragmentShader: ShaderChunk.meshlambert_frag\n\n\t},\n\n\tphong: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.specularmap,\n\t\t\tUniformsLib.envmap,\n\t\t\tUniformsLib.aomap,\n\t\t\tUniformsLib.lightmap,\n\t\t\tUniformsLib.emissivemap,\n\t\t\tUniformsLib.bumpmap,\n\t\t\tUniformsLib.normalmap,\n\t\t\tUniformsLib.displacementmap,\n\t\t\tUniformsLib.fog,\n\t\t\tUniformsLib.lights,\n\t\t\t{\n\t\t\t\temissive: { value: new Color( 0x000000 ) },\n\t\t\t\tspecular: { value: new Color( 0x111111 ) },\n\t\t\t\tshininess: { value: 30 }\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.meshphong_vert,\n\t\tfragmentShader: ShaderChunk.meshphong_frag\n\n\t},\n\n\tstandard: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.envmap,\n\t\t\tUniformsLib.aomap,\n\t\t\tUniformsLib.lightmap,\n\t\t\tUniformsLib.emissivemap,\n\t\t\tUniformsLib.bumpmap,\n\t\t\tUniformsLib.normalmap,\n\t\t\tUniformsLib.displacementmap,\n\t\t\tUniformsLib.roughnessmap,\n\t\t\tUniformsLib.metalnessmap,\n\t\t\tUniformsLib.fog,\n\t\t\tUniformsLib.lights,\n\t\t\t{\n\t\t\t\temissive: { value: new Color( 0x000000 ) },\n\t\t\t\troughness: { value: 1.0 },\n\t\t\t\tmetalness: { value: 0.0 },\n\t\t\t\tenvMapIntensity: { value: 1 } // temporary\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.meshphysical_vert,\n\t\tfragmentShader: ShaderChunk.meshphysical_frag\n\n\t},\n\n\ttoon: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.aomap,\n\t\t\tUniformsLib.lightmap,\n\t\t\tUniformsLib.emissivemap,\n\t\t\tUniformsLib.bumpmap,\n\t\t\tUniformsLib.normalmap,\n\t\t\tUniformsLib.displacementmap,\n\t\t\tUniformsLib.gradientmap,\n\t\t\tUniformsLib.fog,\n\t\t\tUniformsLib.lights,\n\t\t\t{\n\t\t\t\temissive: { value: new Color( 0x000000 ) }\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.meshtoon_vert,\n\t\tfragmentShader: ShaderChunk.meshtoon_frag\n\n\t},\n\n\tmatcap: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.bumpmap,\n\t\t\tUniformsLib.normalmap,\n\t\t\tUniformsLib.displacementmap,\n\t\t\tUniformsLib.fog,\n\t\t\t{\n\t\t\t\tmatcap: { value: null }\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.meshmatcap_vert,\n\t\tfragmentShader: ShaderChunk.meshmatcap_frag\n\n\t},\n\n\tpoints: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.points,\n\t\t\tUniformsLib.fog\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.points_vert,\n\t\tfragmentShader: ShaderChunk.points_frag\n\n\t},\n\n\tdashed: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.fog,\n\t\t\t{\n\t\t\t\tscale: { value: 1 },\n\t\t\t\tdashSize: { value: 1 },\n\t\t\t\ttotalSize: { value: 2 }\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.linedashed_vert,\n\t\tfragmentShader: ShaderChunk.linedashed_frag\n\n\t},\n\n\tdepth: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.displacementmap\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.depth_vert,\n\t\tfragmentShader: ShaderChunk.depth_frag\n\n\t},\n\n\tnormal: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.bumpmap,\n\t\t\tUniformsLib.normalmap,\n\t\t\tUniformsLib.displacementmap,\n\t\t\t{\n\t\t\t\topacity: { value: 1.0 }\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.normal_vert,\n\t\tfragmentShader: ShaderChunk.normal_frag\n\n\t},\n\n\tsprite: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.sprite,\n\t\t\tUniformsLib.fog\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.sprite_vert,\n\t\tfragmentShader: ShaderChunk.sprite_frag\n\n\t},\n\n\tbackground: {\n\n\t\tuniforms: {\n\t\t\tuvTransform: { value: new Matrix3() },\n\t\t\tt2D: { value: null },\n\t\t},\n\n\t\tvertexShader: ShaderChunk.background_vert,\n\t\tfragmentShader: ShaderChunk.background_frag\n\n\t},\n\t/* -------------------------------------------------------------------------\n\t//\tCube map shader\n\t ------------------------------------------------------------------------- */\n\n\tcube: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.envmap,\n\t\t\t{\n\t\t\t\topacity: { value: 1.0 }\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.cube_vert,\n\t\tfragmentShader: ShaderChunk.cube_frag\n\n\t},\n\n\tequirect: {\n\n\t\tuniforms: {\n\t\t\ttEquirect: { value: null },\n\t\t},\n\n\t\tvertexShader: ShaderChunk.equirect_vert,\n\t\tfragmentShader: ShaderChunk.equirect_frag\n\n\t},\n\n\tdistanceRGBA: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.displacementmap,\n\t\t\t{\n\t\t\t\treferencePosition: { value: new Vector3() },\n\t\t\t\tnearDistance: { value: 1 },\n\t\t\t\tfarDistance: { value: 1000 }\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.distanceRGBA_vert,\n\t\tfragmentShader: ShaderChunk.distanceRGBA_frag\n\n\t},\n\n\tshadow: {\n\n\t\tuniforms: mergeUniforms( [\n\t\t\tUniformsLib.lights,\n\t\t\tUniformsLib.fog,\n\t\t\t{\n\t\t\t\tcolor: { value: new Color( 0x00000 ) },\n\t\t\t\topacity: { value: 1.0 }\n\t\t\t},\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.shadow_vert,\n\t\tfragmentShader: ShaderChunk.shadow_frag\n\n\t}\n\n};\n\nShaderLib.physical = {\n\n\tuniforms: mergeUniforms( [\n\t\tShaderLib.standard.uniforms,\n\t\t{\n\t\t\tclearcoat: { value: 0 },\n\t\t\tclearcoatMap: { value: null },\n\t\t\tclearcoatRoughness: { value: 0 },\n\t\t\tclearcoatRoughnessMap: { value: null },\n\t\t\tclearcoatNormalScale: { value: new Vector2( 1, 1 ) },\n\t\t\tclearcoatNormalMap: { value: null },\n\t\t\tsheen: { value: new Color( 0x000000 ) },\n\t\t\ttransmission: { value: 0 },\n\t\t\ttransmissionMap: { value: null },\n\t\t}\n\t] ),\n\n\tvertexShader: ShaderChunk.meshphysical_vert,\n\tfragmentShader: ShaderChunk.meshphysical_frag\n\n};\n\nfunction WebGLBackground( renderer, cubemaps, state, objects, premultipliedAlpha ) {\n\n\tconst clearColor = new Color( 0x000000 );\n\tlet clearAlpha = 0;\n\n\tlet planeMesh;\n\tlet boxMesh;\n\n\tlet currentBackground = null;\n\tlet currentBackgroundVersion = 0;\n\tlet currentTonemapping = null;\n\n\tfunction render( renderList, scene, camera, forceClear ) {\n\n\t\tlet background = scene.isScene === true ? scene.background : null;\n\n\t\tif ( background && background.isTexture ) {\n\n\t\t\tbackground = cubemaps.get( background );\n\n\t\t}\n\n\t\t// Ignore background in AR\n\t\t// TODO: Reconsider this.\n\n\t\tconst xr = renderer.xr;\n\t\tconst session = xr.getSession && xr.getSession();\n\n\t\tif ( session && session.environmentBlendMode === 'additive' ) {\n\n\t\t\tbackground = null;\n\n\t\t}\n\n\t\tif ( background === null ) {\n\n\t\t\tsetClear( clearColor, clearAlpha );\n\n\t\t} else if ( background && background.isColor ) {\n\n\t\t\tsetClear( background, 1 );\n\t\t\tforceClear = true;\n\n\t\t}\n\n\t\tif ( renderer.autoClear || forceClear ) {\n\n\t\t\trenderer.clear( renderer.autoClearColor, renderer.autoClearDepth, renderer.autoClearStencil );\n\n\t\t}\n\n\t\tif ( background && ( background.isCubeTexture || background.isWebGLCubeRenderTarget || background.mapping === CubeUVReflectionMapping ) ) {\n\n\t\t\tif ( boxMesh === undefined ) {\n\n\t\t\t\tboxMesh = new Mesh(\n\t\t\t\t\tnew BoxBufferGeometry( 1, 1, 1 ),\n\t\t\t\t\tnew ShaderMaterial( {\n\t\t\t\t\t\tname: 'BackgroundCubeMaterial',\n\t\t\t\t\t\tuniforms: cloneUniforms( ShaderLib.cube.uniforms ),\n\t\t\t\t\t\tvertexShader: ShaderLib.cube.vertexShader,\n\t\t\t\t\t\tfragmentShader: ShaderLib.cube.fragmentShader,\n\t\t\t\t\t\tside: BackSide,\n\t\t\t\t\t\tdepthTest: false,\n\t\t\t\t\t\tdepthWrite: false,\n\t\t\t\t\t\tfog: false\n\t\t\t\t\t} )\n\t\t\t\t);\n\n\t\t\t\tboxMesh.geometry.deleteAttribute( 'normal' );\n\t\t\t\tboxMesh.geometry.deleteAttribute( 'uv' );\n\n\t\t\t\tboxMesh.onBeforeRender = function ( renderer, scene, camera ) {\n\n\t\t\t\t\tthis.matrixWorld.copyPosition( camera.matrixWorld );\n\n\t\t\t\t};\n\n\t\t\t\t// enable code injection for non-built-in material\n\t\t\t\tObject.defineProperty( boxMesh.material, 'envMap', {\n\n\t\t\t\t\tget: function () {\n\n\t\t\t\t\t\treturn this.uniforms.envMap.value;\n\n\t\t\t\t\t}\n\n\t\t\t\t} );\n\n\t\t\t\tobjects.update( boxMesh );\n\n\t\t\t}\n\n\t\t\tif ( background.isWebGLCubeRenderTarget ) {\n\n\t\t\t\t// TODO Deprecate\n\n\t\t\t\tbackground = background.texture;\n\n\t\t\t}\n\n\t\t\tboxMesh.material.uniforms.envMap.value = background;\n\t\t\tboxMesh.material.uniforms.flipEnvMap.value = ( background.isCubeTexture && background._needsFlipEnvMap ) ? - 1 : 1;\n\n\t\t\tif ( currentBackground !== background ||\n\t\t\t\tcurrentBackgroundVersion !== background.version ||\n\t\t\t\tcurrentTonemapping !== renderer.toneMapping ) {\n\n\t\t\t\tboxMesh.material.needsUpdate = true;\n\n\t\t\t\tcurrentBackground = background;\n\t\t\t\tcurrentBackgroundVersion = background.version;\n\t\t\t\tcurrentTonemapping = renderer.toneMapping;\n\n\t\t\t}\n\n\t\t\t// push to the pre-sorted opaque render list\n\t\t\trenderList.unshift( boxMesh, boxMesh.geometry, boxMesh.material, 0, 0, null );\n\n\t\t} else if ( background && background.isTexture ) {\n\n\t\t\tif ( planeMesh === undefined ) {\n\n\t\t\t\tplaneMesh = new Mesh(\n\t\t\t\t\tnew PlaneBufferGeometry( 2, 2 ),\n\t\t\t\t\tnew ShaderMaterial( {\n\t\t\t\t\t\tname: 'BackgroundMaterial',\n\t\t\t\t\t\tuniforms: cloneUniforms( ShaderLib.background.uniforms ),\n\t\t\t\t\t\tvertexShader: ShaderLib.background.vertexShader,\n\t\t\t\t\t\tfragmentShader: ShaderLib.background.fragmentShader,\n\t\t\t\t\t\tside: FrontSide,\n\t\t\t\t\t\tdepthTest: false,\n\t\t\t\t\t\tdepthWrite: false,\n\t\t\t\t\t\tfog: false\n\t\t\t\t\t} )\n\t\t\t\t);\n\n\t\t\t\tplaneMesh.geometry.deleteAttribute( 'normal' );\n\n\t\t\t\t// enable code injection for non-built-in material\n\t\t\t\tObject.defineProperty( planeMesh.material, 'map', {\n\n\t\t\t\t\tget: function () {\n\n\t\t\t\t\t\treturn this.uniforms.t2D.value;\n\n\t\t\t\t\t}\n\n\t\t\t\t} );\n\n\t\t\t\tobjects.update( planeMesh );\n\n\t\t\t}\n\n\t\t\tplaneMesh.material.uniforms.t2D.value = background;\n\n\t\t\tif ( background.matrixAutoUpdate === true ) {\n\n\t\t\t\tbackground.updateMatrix();\n\n\t\t\t}\n\n\t\t\tplaneMesh.material.uniforms.uvTransform.value.copy( background.matrix );\n\n\t\t\tif ( currentBackground !== background ||\n\t\t\t\tcurrentBackgroundVersion !== background.version ||\n\t\t\t\tcurrentTonemapping !== renderer.toneMapping ) {\n\n\t\t\t\tplaneMesh.material.needsUpdate = true;\n\n\t\t\t\tcurrentBackground = background;\n\t\t\t\tcurrentBackgroundVersion = background.version;\n\t\t\t\tcurrentTonemapping = renderer.toneMapping;\n\n\t\t\t}\n\n\n\t\t\t// push to the pre-sorted opaque render list\n\t\t\trenderList.unshift( planeMesh, planeMesh.geometry, planeMesh.material, 0, 0, null );\n\n\t\t}\n\n\t}\n\n\tfunction setClear( color, alpha ) {\n\n\t\tstate.buffers.color.setClear( color.r, color.g, color.b, alpha, premultipliedAlpha );\n\n\t}\n\n\treturn {\n\n\t\tgetClearColor: function () {\n\n\t\t\treturn clearColor;\n\n\t\t},\n\t\tsetClearColor: function ( color, alpha = 1 ) {\n\n\t\t\tclearColor.set( color );\n\t\t\tclearAlpha = alpha;\n\t\t\tsetClear( clearColor, clearAlpha );\n\n\t\t},\n\t\tgetClearAlpha: function () {\n\n\t\t\treturn clearAlpha;\n\n\t\t},\n\t\tsetClearAlpha: function ( alpha ) {\n\n\t\t\tclearAlpha = alpha;\n\t\t\tsetClear( clearColor, clearAlpha );\n\n\t\t},\n\t\trender: render\n\n\t};\n\n}\n\nfunction WebGLBindingStates( gl, extensions, attributes, capabilities ) {\n\n\tconst maxVertexAttributes = gl.getParameter( 34921 );\n\n\tconst extension = capabilities.isWebGL2 ? null : extensions.get( 'OES_vertex_array_object' );\n\tconst vaoAvailable = capabilities.isWebGL2 || extension !== null;\n\n\tconst bindingStates = {};\n\n\tconst defaultState = createBindingState( null );\n\tlet currentState = defaultState;\n\n\tfunction setup( object, material, program, geometry, index ) {\n\n\t\tlet updateBuffers = false;\n\n\t\tif ( vaoAvailable ) {\n\n\t\t\tconst state = getBindingState( geometry, program, material );\n\n\t\t\tif ( currentState !== state ) {\n\n\t\t\t\tcurrentState = state;\n\t\t\t\tbindVertexArrayObject( currentState.object );\n\n\t\t\t}\n\n\t\t\tupdateBuffers = needsUpdate( geometry, index );\n\n\t\t\tif ( updateBuffers ) saveCache( geometry, index );\n\n\t\t} else {\n\n\t\t\tconst wireframe = ( material.wireframe === true );\n\n\t\t\tif ( currentState.geometry !== geometry.id ||\n\t\t\t\tcurrentState.program !== program.id ||\n\t\t\t\tcurrentState.wireframe !== wireframe ) {\n\n\t\t\t\tcurrentState.geometry = geometry.id;\n\t\t\t\tcurrentState.program = program.id;\n\t\t\t\tcurrentState.wireframe = wireframe;\n\n\t\t\t\tupdateBuffers = true;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( object.isInstancedMesh === true ) {\n\n\t\t\tupdateBuffers = true;\n\n\t\t}\n\n\t\tif ( index !== null ) {\n\n\t\t\tattributes.update( index, 34963 );\n\n\t\t}\n\n\t\tif ( updateBuffers ) {\n\n\t\t\tsetupVertexAttributes( object, material, program, geometry );\n\n\t\t\tif ( index !== null ) {\n\n\t\t\t\tgl.bindBuffer( 34963, attributes.get( index ).buffer );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tfunction createVertexArrayObject() {\n\n\t\tif ( capabilities.isWebGL2 ) return gl.createVertexArray();\n\n\t\treturn extension.createVertexArrayOES();\n\n\t}\n\n\tfunction bindVertexArrayObject( vao ) {\n\n\t\tif ( capabilities.isWebGL2 ) return gl.bindVertexArray( vao );\n\n\t\treturn extension.bindVertexArrayOES( vao );\n\n\t}\n\n\tfunction deleteVertexArrayObject( vao ) {\n\n\t\tif ( capabilities.isWebGL2 ) return gl.deleteVertexArray( vao );\n\n\t\treturn extension.deleteVertexArrayOES( vao );\n\n\t}\n\n\tfunction getBindingState( geometry, program, material ) {\n\n\t\tconst wireframe = ( material.wireframe === true );\n\n\t\tlet programMap = bindingStates[ geometry.id ];\n\n\t\tif ( programMap === undefined ) {\n\n\t\t\tprogramMap = {};\n\t\t\tbindingStates[ geometry.id ] = programMap;\n\n\t\t}\n\n\t\tlet stateMap = programMap[ program.id ];\n\n\t\tif ( stateMap === undefined ) {\n\n\t\t\tstateMap = {};\n\t\t\tprogramMap[ program.id ] = stateMap;\n\n\t\t}\n\n\t\tlet state = stateMap[ wireframe ];\n\n\t\tif ( state === undefined ) {\n\n\t\t\tstate = createBindingState( createVertexArrayObject() );\n\t\t\tstateMap[ wireframe ] = state;\n\n\t\t}\n\n\t\treturn state;\n\n\t}\n\n\tfunction createBindingState( vao ) {\n\n\t\tconst newAttributes = [];\n\t\tconst enabledAttributes = [];\n\t\tconst attributeDivisors = [];\n\n\t\tfor ( let i = 0; i < maxVertexAttributes; i ++ ) {\n\n\t\t\tnewAttributes[ i ] = 0;\n\t\t\tenabledAttributes[ i ] = 0;\n\t\t\tattributeDivisors[ i ] = 0;\n\n\t\t}\n\n\t\treturn {\n\n\t\t\t// for backward compatibility on non-VAO support browser\n\t\t\tgeometry: null,\n\t\t\tprogram: null,\n\t\t\twireframe: false,\n\n\t\t\tnewAttributes: newAttributes,\n\t\t\tenabledAttributes: enabledAttributes,\n\t\t\tattributeDivisors: attributeDivisors,\n\t\t\tobject: vao,\n\t\t\tattributes: {},\n\t\t\tindex: null\n\n\t\t};\n\n\t}\n\n\tfunction needsUpdate( geometry, index ) {\n\n\t\tconst cachedAttributes = currentState.attributes;\n\t\tconst geometryAttributes = geometry.attributes;\n\n\t\tlet attributesNum = 0;\n\n\t\tfor ( const key in geometryAttributes ) {\n\n\t\t\tconst cachedAttribute = cachedAttributes[ key ];\n\t\t\tconst geometryAttribute = geometryAttributes[ key ];\n\n\t\t\tif ( cachedAttribute === undefined ) return true;\n\n\t\t\tif ( cachedAttribute.attribute !== geometryAttribute ) return true;\n\n\t\t\tif ( cachedAttribute.data !== geometryAttribute.data ) return true;\n\n\t\t\tattributesNum ++;\n\n\t\t}\n\n\t\tif ( currentState.attributesNum !== attributesNum ) return true;\n\n\t\tif ( currentState.index !== index ) return true;\n\n\t\treturn false;\n\n\t}\n\n\tfunction saveCache( geometry, index ) {\n\n\t\tconst cache = {};\n\t\tconst attributes = geometry.attributes;\n\t\tlet attributesNum = 0;\n\n\t\tfor ( const key in attributes ) {\n\n\t\t\tconst attribute = attributes[ key ];\n\n\t\t\tconst data = {};\n\t\t\tdata.attribute = attribute;\n\n\t\t\tif ( attribute.data ) {\n\n\t\t\t\tdata.data = attribute.data;\n\n\t\t\t}\n\n\t\t\tcache[ key ] = data;\n\n\t\t\tattributesNum ++;\n\n\t\t}\n\n\t\tcurrentState.attributes = cache;\n\t\tcurrentState.attributesNum = attributesNum;\n\n\t\tcurrentState.index = index;\n\n\t}\n\n\tfunction initAttributes() {\n\n\t\tconst newAttributes = currentState.newAttributes;\n\n\t\tfor ( let i = 0, il = newAttributes.length; i < il; i ++ ) {\n\n\t\t\tnewAttributes[ i ] = 0;\n\n\t\t}\n\n\t}\n\n\tfunction enableAttribute( attribute ) {\n\n\t\tenableAttributeAndDivisor( attribute, 0 );\n\n\t}\n\n\tfunction enableAttributeAndDivisor( attribute, meshPerAttribute ) {\n\n\t\tconst newAttributes = currentState.newAttributes;\n\t\tconst enabledAttributes = currentState.enabledAttributes;\n\t\tconst attributeDivisors = currentState.attributeDivisors;\n\n\t\tnewAttributes[ attribute ] = 1;\n\n\t\tif ( enabledAttributes[ attribute ] === 0 ) {\n\n\t\t\tgl.enableVertexAttribArray( attribute );\n\t\t\tenabledAttributes[ attribute ] = 1;\n\n\t\t}\n\n\t\tif ( attributeDivisors[ attribute ] !== meshPerAttribute ) {\n\n\t\t\tconst extension = capabilities.isWebGL2 ? gl : extensions.get( 'ANGLE_instanced_arrays' );\n\n\t\t\textension[ capabilities.isWebGL2 ? 'vertexAttribDivisor' : 'vertexAttribDivisorANGLE' ]( attribute, meshPerAttribute );\n\t\t\tattributeDivisors[ attribute ] = meshPerAttribute;\n\n\t\t}\n\n\t}\n\n\tfunction disableUnusedAttributes() {\n\n\t\tconst newAttributes = currentState.newAttributes;\n\t\tconst enabledAttributes = currentState.enabledAttributes;\n\n\t\tfor ( let i = 0, il = enabledAttributes.length; i < il; i ++ ) {\n\n\t\t\tif ( enabledAttributes[ i ] !== newAttributes[ i ] ) {\n\n\t\t\t\tgl.disableVertexAttribArray( i );\n\t\t\t\tenabledAttributes[ i ] = 0;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tfunction vertexAttribPointer( index, size, type, normalized, stride, offset ) {\n\n\t\tif ( capabilities.isWebGL2 === true && ( type === 5124 || type === 5125 ) ) {\n\n\t\t\tgl.vertexAttribIPointer( index, size, type, stride, offset );\n\n\t\t} else {\n\n\t\t\tgl.vertexAttribPointer( index, size, type, normalized, stride, offset );\n\n\t\t}\n\n\t}\n\n\tfunction setupVertexAttributes( object, material, program, geometry ) {\n\n\t\tif ( capabilities.isWebGL2 === false && ( object.isInstancedMesh || geometry.isInstancedBufferGeometry ) ) {\n\n\t\t\tif ( extensions.get( 'ANGLE_instanced_arrays' ) === null ) return;\n\n\t\t}\n\n\t\tinitAttributes();\n\n\t\tconst geometryAttributes = geometry.attributes;\n\n\t\tconst programAttributes = program.getAttributes();\n\n\t\tconst materialDefaultAttributeValues = material.defaultAttributeValues;\n\n\t\tfor ( const name in programAttributes ) {\n\n\t\t\tconst programAttribute = programAttributes[ name ];\n\n\t\t\tif ( programAttribute >= 0 ) {\n\n\t\t\t\tconst geometryAttribute = geometryAttributes[ name ];\n\n\t\t\t\tif ( geometryAttribute !== undefined ) {\n\n\t\t\t\t\tconst normalized = geometryAttribute.normalized;\n\t\t\t\t\tconst size = geometryAttribute.itemSize;\n\n\t\t\t\t\tconst attribute = attributes.get( geometryAttribute );\n\n\t\t\t\t\t// TODO Attribute may not be available on context restore\n\n\t\t\t\t\tif ( attribute === undefined ) continue;\n\n\t\t\t\t\tconst buffer = attribute.buffer;\n\t\t\t\t\tconst type = attribute.type;\n\t\t\t\t\tconst bytesPerElement = attribute.bytesPerElement;\n\n\t\t\t\t\tif ( geometryAttribute.isInterleavedBufferAttribute ) {\n\n\t\t\t\t\t\tconst data = geometryAttribute.data;\n\t\t\t\t\t\tconst stride = data.stride;\n\t\t\t\t\t\tconst offset = geometryAttribute.offset;\n\n\t\t\t\t\t\tif ( data && data.isInstancedInterleavedBuffer ) {\n\n\t\t\t\t\t\t\tenableAttributeAndDivisor( programAttribute, data.meshPerAttribute );\n\n\t\t\t\t\t\t\tif ( geometry._maxInstanceCount === undefined ) {\n\n\t\t\t\t\t\t\t\tgeometry._maxInstanceCount = data.meshPerAttribute * data.count;\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tenableAttribute( programAttribute );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tgl.bindBuffer( 34962, buffer );\n\t\t\t\t\t\tvertexAttribPointer( programAttribute, size, type, normalized, stride * bytesPerElement, offset * bytesPerElement );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tif ( geometryAttribute.isInstancedBufferAttribute ) {\n\n\t\t\t\t\t\t\tenableAttributeAndDivisor( programAttribute, geometryAttribute.meshPerAttribute );\n\n\t\t\t\t\t\t\tif ( geometry._maxInstanceCount === undefined ) {\n\n\t\t\t\t\t\t\t\tgeometry._maxInstanceCount = geometryAttribute.meshPerAttribute * geometryAttribute.count;\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tenableAttribute( programAttribute );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tgl.bindBuffer( 34962, buffer );\n\t\t\t\t\t\tvertexAttribPointer( programAttribute, size, type, normalized, 0, 0 );\n\n\t\t\t\t\t}\n\n\t\t\t\t} else if ( name === 'instanceMatrix' ) {\n\n\t\t\t\t\tconst attribute = attributes.get( object.instanceMatrix );\n\n\t\t\t\t\t// TODO Attribute may not be available on context restore\n\n\t\t\t\t\tif ( attribute === undefined ) continue;\n\n\t\t\t\t\tconst buffer = attribute.buffer;\n\t\t\t\t\tconst type = attribute.type;\n\n\t\t\t\t\tenableAttributeAndDivisor( programAttribute + 0, 1 );\n\t\t\t\t\tenableAttributeAndDivisor( programAttribute + 1, 1 );\n\t\t\t\t\tenableAttributeAndDivisor( programAttribute + 2, 1 );\n\t\t\t\t\tenableAttributeAndDivisor( programAttribute + 3, 1 );\n\n\t\t\t\t\tgl.bindBuffer( 34962, buffer );\n\n\t\t\t\t\tgl.vertexAttribPointer( programAttribute + 0, 4, type, false, 64, 0 );\n\t\t\t\t\tgl.vertexAttribPointer( programAttribute + 1, 4, type, false, 64, 16 );\n\t\t\t\t\tgl.vertexAttribPointer( programAttribute + 2, 4, type, false, 64, 32 );\n\t\t\t\t\tgl.vertexAttribPointer( programAttribute + 3, 4, type, false, 64, 48 );\n\n\t\t\t\t} else if ( name === 'instanceColor' ) {\n\n\t\t\t\t\tconst attribute = attributes.get( object.instanceColor );\n\n\t\t\t\t\t// TODO Attribute may not be available on context restore\n\n\t\t\t\t\tif ( attribute === undefined ) continue;\n\n\t\t\t\t\tconst buffer = attribute.buffer;\n\t\t\t\t\tconst type = attribute.type;\n\n\t\t\t\t\tenableAttributeAndDivisor( programAttribute, 1 );\n\n\t\t\t\t\tgl.bindBuffer( 34962, buffer );\n\n\t\t\t\t\tgl.vertexAttribPointer( programAttribute, 3, type, false, 12, 0 );\n\n\t\t\t\t} else if ( materialDefaultAttributeValues !== undefined ) {\n\n\t\t\t\t\tconst value = materialDefaultAttributeValues[ name ];\n\n\t\t\t\t\tif ( value !== undefined ) {\n\n\t\t\t\t\t\tswitch ( value.length ) {\n\n\t\t\t\t\t\t\tcase 2:\n\t\t\t\t\t\t\t\tgl.vertexAttrib2fv( programAttribute, value );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tcase 3:\n\t\t\t\t\t\t\t\tgl.vertexAttrib3fv( programAttribute, value );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tcase 4:\n\t\t\t\t\t\t\t\tgl.vertexAttrib4fv( programAttribute, value );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tdefault:\n\t\t\t\t\t\t\t\tgl.vertexAttrib1fv( programAttribute, value );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tdisableUnusedAttributes();\n\n\t}\n\n\tfunction dispose() {\n\n\t\treset();\n\n\t\tfor ( const geometryId in bindingStates ) {\n\n\t\t\tconst programMap = bindingStates[ geometryId ];\n\n\t\t\tfor ( const programId in programMap ) {\n\n\t\t\t\tconst stateMap = programMap[ programId ];\n\n\t\t\t\tfor ( const wireframe in stateMap ) {\n\n\t\t\t\t\tdeleteVertexArrayObject( stateMap[ wireframe ].object );\n\n\t\t\t\t\tdelete stateMap[ wireframe ];\n\n\t\t\t\t}\n\n\t\t\t\tdelete programMap[ programId ];\n\n\t\t\t}\n\n\t\t\tdelete bindingStates[ geometryId ];\n\n\t\t}\n\n\t}\n\n\tfunction releaseStatesOfGeometry( geometry ) {\n\n\t\tif ( bindingStates[ geometry.id ] === undefined ) return;\n\n\t\tconst programMap = bindingStates[ geometry.id ];\n\n\t\tfor ( const programId in programMap ) {\n\n\t\t\tconst stateMap = programMap[ programId ];\n\n\t\t\tfor ( const wireframe in stateMap ) {\n\n\t\t\t\tdeleteVertexArrayObject( stateMap[ wireframe ].object );\n\n\t\t\t\tdelete stateMap[ wireframe ];\n\n\t\t\t}\n\n\t\t\tdelete programMap[ programId ];\n\n\t\t}\n\n\t\tdelete bindingStates[ geometry.id ];\n\n\t}\n\n\tfunction releaseStatesOfProgram( program ) {\n\n\t\tfor ( const geometryId in bindingStates ) {\n\n\t\t\tconst programMap = bindingStates[ geometryId ];\n\n\t\t\tif ( programMap[ program.id ] === undefined ) continue;\n\n\t\t\tconst stateMap = programMap[ program.id ];\n\n\t\t\tfor ( const wireframe in stateMap ) {\n\n\t\t\t\tdeleteVertexArrayObject( stateMap[ wireframe ].object );\n\n\t\t\t\tdelete stateMap[ wireframe ];\n\n\t\t\t}\n\n\t\t\tdelete programMap[ program.id ];\n\n\t\t}\n\n\t}\n\n\tfunction reset() {\n\n\t\tresetDefaultState();\n\n\t\tif ( currentState === defaultState ) return;\n\n\t\tcurrentState = defaultState;\n\t\tbindVertexArrayObject( currentState.object );\n\n\t}\n\n\t// for backward-compatilibity\n\n\tfunction resetDefaultState() {\n\n\t\tdefaultState.geometry = null;\n\t\tdefaultState.program = null;\n\t\tdefaultState.wireframe = false;\n\n\t}\n\n\treturn {\n\n\t\tsetup: setup,\n\t\treset: reset,\n\t\tresetDefaultState: resetDefaultState,\n\t\tdispose: dispose,\n\t\treleaseStatesOfGeometry: releaseStatesOfGeometry,\n\t\treleaseStatesOfProgram: releaseStatesOfProgram,\n\n\t\tinitAttributes: initAttributes,\n\t\tenableAttribute: enableAttribute,\n\t\tdisableUnusedAttributes: disableUnusedAttributes\n\n\t};\n\n}\n\nfunction WebGLBufferRenderer( gl, extensions, info, capabilities ) {\n\n\tconst isWebGL2 = capabilities.isWebGL2;\n\n\tlet mode;\n\n\tfunction setMode( value ) {\n\n\t\tmode = value;\n\n\t}\n\n\tfunction render( start, count ) {\n\n\t\tgl.drawArrays( mode, start, count );\n\n\t\tinfo.update( count, mode, 1 );\n\n\t}\n\n\tfunction renderInstances( start, count, primcount ) {\n\n\t\tif ( primcount === 0 ) return;\n\n\t\tlet extension, methodName;\n\n\t\tif ( isWebGL2 ) {\n\n\t\t\textension = gl;\n\t\t\tmethodName = 'drawArraysInstanced';\n\n\t\t} else {\n\n\t\t\textension = extensions.get( 'ANGLE_instanced_arrays' );\n\t\t\tmethodName = 'drawArraysInstancedANGLE';\n\n\t\t\tif ( extension === null ) {\n\n\t\t\t\tconsole.error( 'THREE.WebGLBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.' );\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t}\n\n\t\textension[ methodName ]( mode, start, count, primcount );\n\n\t\tinfo.update( count, mode, primcount );\n\n\t}\n\n\t//\n\n\tthis.setMode = setMode;\n\tthis.render = render;\n\tthis.renderInstances = renderInstances;\n\n}\n\nfunction WebGLCapabilities( gl, extensions, parameters ) {\n\n\tlet maxAnisotropy;\n\n\tfunction getMaxAnisotropy() {\n\n\t\tif ( maxAnisotropy !== undefined ) return maxAnisotropy;\n\n\t\tconst extension = extensions.get( 'EXT_texture_filter_anisotropic' );\n\n\t\tif ( extension !== null ) {\n\n\t\t\tmaxAnisotropy = gl.getParameter( extension.MAX_TEXTURE_MAX_ANISOTROPY_EXT );\n\n\t\t} else {\n\n\t\t\tmaxAnisotropy = 0;\n\n\t\t}\n\n\t\treturn maxAnisotropy;\n\n\t}\n\n\tfunction getMaxPrecision( precision ) {\n\n\t\tif ( precision === 'highp' ) {\n\n\t\t\tif ( gl.getShaderPrecisionFormat( 35633, 36338 ).precision > 0 &&\n\t\t\t\tgl.getShaderPrecisionFormat( 35632, 36338 ).precision > 0 ) {\n\n\t\t\t\treturn 'highp';\n\n\t\t\t}\n\n\t\t\tprecision = 'mediump';\n\n\t\t}\n\n\t\tif ( precision === 'mediump' ) {\n\n\t\t\tif ( gl.getShaderPrecisionFormat( 35633, 36337 ).precision > 0 &&\n\t\t\t\tgl.getShaderPrecisionFormat( 35632, 36337 ).precision > 0 ) {\n\n\t\t\t\treturn 'mediump';\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn 'lowp';\n\n\t}\n\n\t/* eslint-disable no-undef */\n\tconst isWebGL2 = ( typeof WebGL2RenderingContext !== 'undefined' && gl instanceof WebGL2RenderingContext ) ||\n\t\t( typeof WebGL2ComputeRenderingContext !== 'undefined' && gl instanceof WebGL2ComputeRenderingContext );\n\t/* eslint-enable no-undef */\n\n\tlet precision = parameters.precision !== undefined ? parameters.precision : 'highp';\n\tconst maxPrecision = getMaxPrecision( precision );\n\n\tif ( maxPrecision !== precision ) {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer:', precision, 'not supported, using', maxPrecision, 'instead.' );\n\t\tprecision = maxPrecision;\n\n\t}\n\n\tconst logarithmicDepthBuffer = parameters.logarithmicDepthBuffer === true;\n\n\tconst maxTextures = gl.getParameter( 34930 );\n\tconst maxVertexTextures = gl.getParameter( 35660 );\n\tconst maxTextureSize = gl.getParameter( 3379 );\n\tconst maxCubemapSize = gl.getParameter( 34076 );\n\n\tconst maxAttributes = gl.getParameter( 34921 );\n\tconst maxVertexUniforms = gl.getParameter( 36347 );\n\tconst maxVaryings = gl.getParameter( 36348 );\n\tconst maxFragmentUniforms = gl.getParameter( 36349 );\n\n\tconst vertexTextures = maxVertexTextures > 0;\n\tconst floatFragmentTextures = isWebGL2 || !! extensions.get( 'OES_texture_float' );\n\tconst floatVertexTextures = vertexTextures && floatFragmentTextures;\n\n\tconst maxSamples = isWebGL2 ? gl.getParameter( 36183 ) : 0;\n\n\treturn {\n\n\t\tisWebGL2: isWebGL2,\n\n\t\tgetMaxAnisotropy: getMaxAnisotropy,\n\t\tgetMaxPrecision: getMaxPrecision,\n\n\t\tprecision: precision,\n\t\tlogarithmicDepthBuffer: logarithmicDepthBuffer,\n\n\t\tmaxTextures: maxTextures,\n\t\tmaxVertexTextures: maxVertexTextures,\n\t\tmaxTextureSize: maxTextureSize,\n\t\tmaxCubemapSize: maxCubemapSize,\n\n\t\tmaxAttributes: maxAttributes,\n\t\tmaxVertexUniforms: maxVertexUniforms,\n\t\tmaxVaryings: maxVaryings,\n\t\tmaxFragmentUniforms: maxFragmentUniforms,\n\n\t\tvertexTextures: vertexTextures,\n\t\tfloatFragmentTextures: floatFragmentTextures,\n\t\tfloatVertexTextures: floatVertexTextures,\n\n\t\tmaxSamples: maxSamples\n\n\t};\n\n}\n\nfunction WebGLClipping( properties ) {\n\n\tconst scope = this;\n\n\tlet globalState = null,\n\t\tnumGlobalPlanes = 0,\n\t\tlocalClippingEnabled = false,\n\t\trenderingShadows = false;\n\n\tconst plane = new Plane(),\n\t\tviewNormalMatrix = new Matrix3(),\n\n\t\tuniform = { value: null, needsUpdate: false };\n\n\tthis.uniform = uniform;\n\tthis.numPlanes = 0;\n\tthis.numIntersection = 0;\n\n\tthis.init = function ( planes, enableLocalClipping, camera ) {\n\n\t\tconst enabled =\n\t\t\tplanes.length !== 0 ||\n\t\t\tenableLocalClipping ||\n\t\t\t// enable state of previous frame - the clipping code has to\n\t\t\t// run another frame in order to reset the state:\n\t\t\tnumGlobalPlanes !== 0 ||\n\t\t\tlocalClippingEnabled;\n\n\t\tlocalClippingEnabled = enableLocalClipping;\n\n\t\tglobalState = projectPlanes( planes, camera, 0 );\n\t\tnumGlobalPlanes = planes.length;\n\n\t\treturn enabled;\n\n\t};\n\n\tthis.beginShadows = function () {\n\n\t\trenderingShadows = true;\n\t\tprojectPlanes( null );\n\n\t};\n\n\tthis.endShadows = function () {\n\n\t\trenderingShadows = false;\n\t\tresetGlobalState();\n\n\t};\n\n\tthis.setState = function ( material, camera, useCache ) {\n\n\t\tconst planes = material.clippingPlanes,\n\t\t\tclipIntersection = material.clipIntersection,\n\t\t\tclipShadows = material.clipShadows;\n\n\t\tconst materialProperties = properties.get( material );\n\n\t\tif ( ! localClippingEnabled || planes === null || planes.length === 0 || renderingShadows && ! clipShadows ) {\n\n\t\t\t// there's no local clipping\n\n\t\t\tif ( renderingShadows ) {\n\n\t\t\t\t// there's no global clipping\n\n\t\t\t\tprojectPlanes( null );\n\n\t\t\t} else {\n\n\t\t\t\tresetGlobalState();\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tconst nGlobal = renderingShadows ? 0 : numGlobalPlanes,\n\t\t\t\tlGlobal = nGlobal * 4;\n\n\t\t\tlet dstArray = materialProperties.clippingState || null;\n\n\t\t\tuniform.value = dstArray; // ensure unique state\n\n\t\t\tdstArray = projectPlanes( planes, camera, lGlobal, useCache );\n\n\t\t\tfor ( let i = 0; i !== lGlobal; ++ i ) {\n\n\t\t\t\tdstArray[ i ] = globalState[ i ];\n\n\t\t\t}\n\n\t\t\tmaterialProperties.clippingState = dstArray;\n\t\t\tthis.numIntersection = clipIntersection ? this.numPlanes : 0;\n\t\t\tthis.numPlanes += nGlobal;\n\n\t\t}\n\n\n\t};\n\n\tfunction resetGlobalState() {\n\n\t\tif ( uniform.value !== globalState ) {\n\n\t\t\tuniform.value = globalState;\n\t\t\tuniform.needsUpdate = numGlobalPlanes > 0;\n\n\t\t}\n\n\t\tscope.numPlanes = numGlobalPlanes;\n\t\tscope.numIntersection = 0;\n\n\t}\n\n\tfunction projectPlanes( planes, camera, dstOffset, skipTransform ) {\n\n\t\tconst nPlanes = planes !== null ? planes.length : 0;\n\t\tlet dstArray = null;\n\n\t\tif ( nPlanes !== 0 ) {\n\n\t\t\tdstArray = uniform.value;\n\n\t\t\tif ( skipTransform !== true || dstArray === null ) {\n\n\t\t\t\tconst flatSize = dstOffset + nPlanes * 4,\n\t\t\t\t\tviewMatrix = camera.matrixWorldInverse;\n\n\t\t\t\tviewNormalMatrix.getNormalMatrix( viewMatrix );\n\n\t\t\t\tif ( dstArray === null || dstArray.length < flatSize ) {\n\n\t\t\t\t\tdstArray = new Float32Array( flatSize );\n\n\t\t\t\t}\n\n\t\t\t\tfor ( let i = 0, i4 = dstOffset; i !== nPlanes; ++ i, i4 += 4 ) {\n\n\t\t\t\t\tplane.copy( planes[ i ] ).applyMatrix4( viewMatrix, viewNormalMatrix );\n\n\t\t\t\t\tplane.normal.toArray( dstArray, i4 );\n\t\t\t\t\tdstArray[ i4 + 3 ] = plane.constant;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tuniform.value = dstArray;\n\t\t\tuniform.needsUpdate = true;\n\n\t\t}\n\n\t\tscope.numPlanes = nPlanes;\n\t\tscope.numIntersection = 0;\n\n\t\treturn dstArray;\n\n\t}\n\n}\n\nfunction WebGLCubeMaps( renderer ) {\n\n\tlet cubemaps = new WeakMap();\n\n\tfunction mapTextureMapping( texture, mapping ) {\n\n\t\tif ( mapping === EquirectangularReflectionMapping ) {\n\n\t\t\ttexture.mapping = CubeReflectionMapping;\n\n\t\t} else if ( mapping === EquirectangularRefractionMapping ) {\n\n\t\t\ttexture.mapping = CubeRefractionMapping;\n\n\t\t}\n\n\t\treturn texture;\n\n\t}\n\n\tfunction get( texture ) {\n\n\t\tif ( texture && texture.isTexture ) {\n\n\t\t\tconst mapping = texture.mapping;\n\n\t\t\tif ( mapping === EquirectangularReflectionMapping || mapping === EquirectangularRefractionMapping ) {\n\n\t\t\t\tif ( cubemaps.has( texture ) ) {\n\n\t\t\t\t\tconst cubemap = cubemaps.get( texture ).texture;\n\t\t\t\t\treturn mapTextureMapping( cubemap, texture.mapping );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconst image = texture.image;\n\n\t\t\t\t\tif ( image && image.height > 0 ) {\n\n\t\t\t\t\t\tconst currentRenderList = renderer.getRenderList();\n\t\t\t\t\t\tconst currentRenderTarget = renderer.getRenderTarget();\n\n\t\t\t\t\t\tconst renderTarget = new WebGLCubeRenderTarget( image.height / 2 );\n\t\t\t\t\t\trenderTarget.fromEquirectangularTexture( renderer, texture );\n\t\t\t\t\t\tcubemaps.set( texture, renderTarget );\n\n\t\t\t\t\t\trenderer.setRenderTarget( currentRenderTarget );\n\t\t\t\t\t\trenderer.setRenderList( currentRenderList );\n\n\t\t\t\t\t\ttexture.addEventListener( 'dispose', onTextureDispose );\n\n\t\t\t\t\t\treturn mapTextureMapping( renderTarget.texture, texture.mapping );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\t// image not yet ready. try the conversion next frame\n\n\t\t\t\t\t\treturn null;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn texture;\n\n\t}\n\n\tfunction onTextureDispose( event ) {\n\n\t\tconst texture = event.target;\n\n\t\ttexture.removeEventListener( 'dispose', onTextureDispose );\n\n\t\tconst cubemap = cubemaps.get( texture );\n\n\t\tif ( cubemap !== undefined ) {\n\n\t\t\tcubemaps.delete( texture );\n\t\t\tcubemap.dispose();\n\n\t\t}\n\n\t}\n\n\tfunction dispose() {\n\n\t\tcubemaps = new WeakMap();\n\n\t}\n\n\treturn {\n\t\tget: get,\n\t\tdispose: dispose\n\t};\n\n}\n\nfunction WebGLExtensions( gl ) {\n\n\tconst extensions = {};\n\n\treturn {\n\n\t\thas: function ( name ) {\n\n\t\t\tif ( extensions[ name ] !== undefined ) {\n\n\t\t\t\treturn extensions[ name ] !== null;\n\n\t\t\t}\n\n\t\t\tlet extension;\n\n\t\t\tswitch ( name ) {\n\n\t\t\t\tcase 'WEBGL_depth_texture':\n\t\t\t\t\textension = gl.getExtension( 'WEBGL_depth_texture' ) || gl.getExtension( 'MOZ_WEBGL_depth_texture' ) || gl.getExtension( 'WEBKIT_WEBGL_depth_texture' );\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'EXT_texture_filter_anisotropic':\n\t\t\t\t\textension = gl.getExtension( 'EXT_texture_filter_anisotropic' ) || gl.getExtension( 'MOZ_EXT_texture_filter_anisotropic' ) || gl.getExtension( 'WEBKIT_EXT_texture_filter_anisotropic' );\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'WEBGL_compressed_texture_s3tc':\n\t\t\t\t\textension = gl.getExtension( 'WEBGL_compressed_texture_s3tc' ) || gl.getExtension( 'MOZ_WEBGL_compressed_texture_s3tc' ) || gl.getExtension( 'WEBKIT_WEBGL_compressed_texture_s3tc' );\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'WEBGL_compressed_texture_pvrtc':\n\t\t\t\t\textension = gl.getExtension( 'WEBGL_compressed_texture_pvrtc' ) || gl.getExtension( 'WEBKIT_WEBGL_compressed_texture_pvrtc' );\n\t\t\t\t\tbreak;\n\n\t\t\t\tdefault:\n\t\t\t\t\textension = gl.getExtension( name );\n\n\t\t\t}\n\n\t\t\textensions[ name ] = extension;\n\n\t\t\treturn extension !== null;\n\n\t\t},\n\n\t\tget: function ( name ) {\n\n\t\t\tif ( ! this.has( name ) ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: ' + name + ' extension not supported.' );\n\n\t\t\t}\n\n\t\t\treturn extensions[ name ];\n\n\t\t}\n\n\t};\n\n}\n\nfunction WebGLGeometries( gl, attributes, info, bindingStates ) {\n\n\tconst geometries = new WeakMap();\n\tconst wireframeAttributes = new WeakMap();\n\n\tfunction onGeometryDispose( event ) {\n\n\t\tconst geometry = event.target;\n\t\tconst buffergeometry = geometries.get( geometry );\n\n\t\tif ( buffergeometry.index !== null ) {\n\n\t\t\tattributes.remove( buffergeometry.index );\n\n\t\t}\n\n\t\tfor ( const name in buffergeometry.attributes ) {\n\n\t\t\tattributes.remove( buffergeometry.attributes[ name ] );\n\n\t\t}\n\n\t\tgeometry.removeEventListener( 'dispose', onGeometryDispose );\n\n\t\tgeometries.delete( geometry );\n\n\t\tconst attribute = wireframeAttributes.get( buffergeometry );\n\n\t\tif ( attribute ) {\n\n\t\t\tattributes.remove( attribute );\n\t\t\twireframeAttributes.delete( buffergeometry );\n\n\t\t}\n\n\t\tbindingStates.releaseStatesOfGeometry( buffergeometry );\n\n\t\tif ( geometry.isInstancedBufferGeometry === true ) {\n\n\t\t\tdelete geometry._maxInstanceCount;\n\n\t\t}\n\n\t\t//\n\n\t\tinfo.memory.geometries --;\n\n\t}\n\n\tfunction get( object, geometry ) {\n\n\t\tlet buffergeometry = geometries.get( geometry );\n\n\t\tif ( buffergeometry ) return buffergeometry;\n\n\t\tgeometry.addEventListener( 'dispose', onGeometryDispose );\n\n\t\tif ( geometry.isBufferGeometry ) {\n\n\t\t\tbuffergeometry = geometry;\n\n\t\t} else if ( geometry.isGeometry ) {\n\n\t\t\tif ( geometry._bufferGeometry === undefined ) {\n\n\t\t\t\tgeometry._bufferGeometry = new BufferGeometry().setFromObject( object );\n\n\t\t\t}\n\n\t\t\tbuffergeometry = geometry._bufferGeometry;\n\n\t\t}\n\n\t\tgeometries.set( geometry, buffergeometry );\n\n\t\tinfo.memory.geometries ++;\n\n\t\treturn buffergeometry;\n\n\t}\n\n\tfunction update( geometry ) {\n\n\t\tconst geometryAttributes = geometry.attributes;\n\n\t\t// Updating index buffer in VAO now. See WebGLBindingStates.\n\n\t\tfor ( const name in geometryAttributes ) {\n\n\t\t\tattributes.update( geometryAttributes[ name ], 34962 );\n\n\t\t}\n\n\t\t// morph targets\n\n\t\tconst morphAttributes = geometry.morphAttributes;\n\n\t\tfor ( const name in morphAttributes ) {\n\n\t\t\tconst array = morphAttributes[ name ];\n\n\t\t\tfor ( let i = 0, l = array.length; i < l; i ++ ) {\n\n\t\t\t\tattributes.update( array[ i ], 34962 );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tfunction updateWireframeAttribute( geometry ) {\n\n\t\tconst indices = [];\n\n\t\tconst geometryIndex = geometry.index;\n\t\tconst geometryPosition = geometry.attributes.position;\n\t\tlet version = 0;\n\n\t\tif ( geometryIndex !== null ) {\n\n\t\t\tconst array = geometryIndex.array;\n\t\t\tversion = geometryIndex.version;\n\n\t\t\tfor ( let i = 0, l = array.length; i < l; i += 3 ) {\n\n\t\t\t\tconst a = array[ i + 0 ];\n\t\t\t\tconst b = array[ i + 1 ];\n\t\t\t\tconst c = array[ i + 2 ];\n\n\t\t\t\tindices.push( a, b, b, c, c, a );\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tconst array = geometryPosition.array;\n\t\t\tversion = geometryPosition.version;\n\n\t\t\tfor ( let i = 0, l = ( array.length / 3 ) - 1; i < l; i += 3 ) {\n\n\t\t\t\tconst a = i + 0;\n\t\t\t\tconst b = i + 1;\n\t\t\t\tconst c = i + 2;\n\n\t\t\t\tindices.push( a, b, b, c, c, a );\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst attribute = new ( arrayMax( indices ) > 65535 ? Uint32BufferAttribute : Uint16BufferAttribute )( indices, 1 );\n\t\tattribute.version = version;\n\n\t\t// Updating index buffer in VAO now. See WebGLBindingStates\n\n\t\t//\n\n\t\tconst previousAttribute = wireframeAttributes.get( geometry );\n\n\t\tif ( previousAttribute ) attributes.remove( previousAttribute );\n\n\t\t//\n\n\t\twireframeAttributes.set( geometry, attribute );\n\n\t}\n\n\tfunction getWireframeAttribute( geometry ) {\n\n\t\tconst currentAttribute = wireframeAttributes.get( geometry );\n\n\t\tif ( currentAttribute ) {\n\n\t\t\tconst geometryIndex = geometry.index;\n\n\t\t\tif ( geometryIndex !== null ) {\n\n\t\t\t\t// if the attribute is obsolete, create a new one\n\n\t\t\t\tif ( currentAttribute.version < geometryIndex.version ) {\n\n\t\t\t\t\tupdateWireframeAttribute( geometry );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tupdateWireframeAttribute( geometry );\n\n\t\t}\n\n\t\treturn wireframeAttributes.get( geometry );\n\n\t}\n\n\treturn {\n\n\t\tget: get,\n\t\tupdate: update,\n\n\t\tgetWireframeAttribute: getWireframeAttribute\n\n\t};\n\n}\n\nfunction WebGLIndexedBufferRenderer( gl, extensions, info, capabilities ) {\n\n\tconst isWebGL2 = capabilities.isWebGL2;\n\n\tlet mode;\n\n\tfunction setMode( value ) {\n\n\t\tmode = value;\n\n\t}\n\n\tlet type, bytesPerElement;\n\n\tfunction setIndex( value ) {\n\n\t\ttype = value.type;\n\t\tbytesPerElement = value.bytesPerElement;\n\n\t}\n\n\tfunction render( start, count ) {\n\n\t\tgl.drawElements( mode, count, type, start * bytesPerElement );\n\n\t\tinfo.update( count, mode, 1 );\n\n\t}\n\n\tfunction renderInstances( start, count, primcount ) {\n\n\t\tif ( primcount === 0 ) return;\n\n\t\tlet extension, methodName;\n\n\t\tif ( isWebGL2 ) {\n\n\t\t\textension = gl;\n\t\t\tmethodName = 'drawElementsInstanced';\n\n\t\t} else {\n\n\t\t\textension = extensions.get( 'ANGLE_instanced_arrays' );\n\t\t\tmethodName = 'drawElementsInstancedANGLE';\n\n\t\t\tif ( extension === null ) {\n\n\t\t\t\tconsole.error( 'THREE.WebGLIndexedBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.' );\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t}\n\n\t\textension[ methodName ]( mode, count, type, start * bytesPerElement, primcount );\n\n\t\tinfo.update( count, mode, primcount );\n\n\t}\n\n\t//\n\n\tthis.setMode = setMode;\n\tthis.setIndex = setIndex;\n\tthis.render = render;\n\tthis.renderInstances = renderInstances;\n\n}\n\nfunction WebGLInfo( gl ) {\n\n\tconst memory = {\n\t\tgeometries: 0,\n\t\ttextures: 0\n\t};\n\n\tconst render = {\n\t\tframe: 0,\n\t\tcalls: 0,\n\t\ttriangles: 0,\n\t\tpoints: 0,\n\t\tlines: 0\n\t};\n\n\tfunction update( count, mode, instanceCount ) {\n\n\t\trender.calls ++;\n\n\t\tswitch ( mode ) {\n\n\t\t\tcase 4:\n\t\t\t\trender.triangles += instanceCount * ( count / 3 );\n\t\t\t\tbreak;\n\n\t\t\tcase 1:\n\t\t\t\trender.lines += instanceCount * ( count / 2 );\n\t\t\t\tbreak;\n\n\t\t\tcase 3:\n\t\t\t\trender.lines += instanceCount * ( count - 1 );\n\t\t\t\tbreak;\n\n\t\t\tcase 2:\n\t\t\t\trender.lines += instanceCount * count;\n\t\t\t\tbreak;\n\n\t\t\tcase 0:\n\t\t\t\trender.points += instanceCount * count;\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\t\t\t\tconsole.error( 'THREE.WebGLInfo: Unknown draw mode:', mode );\n\t\t\t\tbreak;\n\n\t\t}\n\n\t}\n\n\tfunction reset() {\n\n\t\trender.frame ++;\n\t\trender.calls = 0;\n\t\trender.triangles = 0;\n\t\trender.points = 0;\n\t\trender.lines = 0;\n\n\t}\n\n\treturn {\n\t\tmemory: memory,\n\t\trender: render,\n\t\tprograms: null,\n\t\tautoReset: true,\n\t\treset: reset,\n\t\tupdate: update\n\t};\n\n}\n\nfunction numericalSort( a, b ) {\n\n\treturn a[ 0 ] - b[ 0 ];\n\n}\n\nfunction absNumericalSort( a, b ) {\n\n\treturn Math.abs( b[ 1 ] ) - Math.abs( a[ 1 ] );\n\n}\n\nfunction WebGLMorphtargets( gl ) {\n\n\tconst influencesList = {};\n\tconst morphInfluences = new Float32Array( 8 );\n\n\tconst workInfluences = [];\n\n\tfor ( let i = 0; i < 8; i ++ ) {\n\n\t\tworkInfluences[ i ] = [ i, 0 ];\n\n\t}\n\n\tfunction update( object, geometry, material, program ) {\n\n\t\tconst objectInfluences = object.morphTargetInfluences;\n\n\t\t// When object doesn't have morph target influences defined, we treat it as a 0-length array\n\t\t// This is important to make sure we set up morphTargetBaseInfluence / morphTargetInfluences\n\n\t\tconst length = objectInfluences === undefined ? 0 : objectInfluences.length;\n\n\t\tlet influences = influencesList[ geometry.id ];\n\n\t\tif ( influences === undefined ) {\n\n\t\t\t// initialise list\n\n\t\t\tinfluences = [];\n\n\t\t\tfor ( let i = 0; i < length; i ++ ) {\n\n\t\t\t\tinfluences[ i ] = [ i, 0 ];\n\n\t\t\t}\n\n\t\t\tinfluencesList[ geometry.id ] = influences;\n\n\t\t}\n\n\t\t// Collect influences\n\n\t\tfor ( let i = 0; i < length; i ++ ) {\n\n\t\t\tconst influence = influences[ i ];\n\n\t\t\tinfluence[ 0 ] = i;\n\t\t\tinfluence[ 1 ] = objectInfluences[ i ];\n\n\t\t}\n\n\t\tinfluences.sort( absNumericalSort );\n\n\t\tfor ( let i = 0; i < 8; i ++ ) {\n\n\t\t\tif ( i < length && influences[ i ][ 1 ] ) {\n\n\t\t\t\tworkInfluences[ i ][ 0 ] = influences[ i ][ 0 ];\n\t\t\t\tworkInfluences[ i ][ 1 ] = influences[ i ][ 1 ];\n\n\t\t\t} else {\n\n\t\t\t\tworkInfluences[ i ][ 0 ] = Number.MAX_SAFE_INTEGER;\n\t\t\t\tworkInfluences[ i ][ 1 ] = 0;\n\n\t\t\t}\n\n\t\t}\n\n\t\tworkInfluences.sort( numericalSort );\n\n\t\tconst morphTargets = material.morphTargets && geometry.morphAttributes.position;\n\t\tconst morphNormals = material.morphNormals && geometry.morphAttributes.normal;\n\n\t\tlet morphInfluencesSum = 0;\n\n\t\tfor ( let i = 0; i < 8; i ++ ) {\n\n\t\t\tconst influence = workInfluences[ i ];\n\t\t\tconst index = influence[ 0 ];\n\t\t\tconst value = influence[ 1 ];\n\n\t\t\tif ( index !== Number.MAX_SAFE_INTEGER && value ) {\n\n\t\t\t\tif ( morphTargets && geometry.getAttribute( 'morphTarget' + i ) !== morphTargets[ index ] ) {\n\n\t\t\t\t\tgeometry.setAttribute( 'morphTarget' + i, morphTargets[ index ] );\n\n\t\t\t\t}\n\n\t\t\t\tif ( morphNormals && geometry.getAttribute( 'morphNormal' + i ) !== morphNormals[ index ] ) {\n\n\t\t\t\t\tgeometry.setAttribute( 'morphNormal' + i, morphNormals[ index ] );\n\n\t\t\t\t}\n\n\t\t\t\tmorphInfluences[ i ] = value;\n\t\t\t\tmorphInfluencesSum += value;\n\n\t\t\t} else {\n\n\t\t\t\tif ( morphTargets && geometry.hasAttribute( 'morphTarget' + i ) === true ) {\n\n\t\t\t\t\tgeometry.deleteAttribute( 'morphTarget' + i );\n\n\t\t\t\t}\n\n\t\t\t\tif ( morphNormals && geometry.hasAttribute( 'morphNormal' + i ) === true ) {\n\n\t\t\t\t\tgeometry.deleteAttribute( 'morphNormal' + i );\n\n\t\t\t\t}\n\n\t\t\t\tmorphInfluences[ i ] = 0;\n\n\t\t\t}\n\n\t\t}\n\n\t\t// GLSL shader uses formula baseinfluence * base + sum(target * influence)\n\t\t// This allows us to switch between absolute morphs and relative morphs without changing shader code\n\t\t// When baseinfluence = 1 - sum(influence), the above is equivalent to sum((target - base) * influence)\n\t\tconst morphBaseInfluence = geometry.morphTargetsRelative ? 1 : 1 - morphInfluencesSum;\n\n\t\tprogram.getUniforms().setValue( gl, 'morphTargetBaseInfluence', morphBaseInfluence );\n\t\tprogram.getUniforms().setValue( gl, 'morphTargetInfluences', morphInfluences );\n\n\t}\n\n\treturn {\n\n\t\tupdate: update\n\n\t};\n\n}\n\nfunction WebGLObjects( gl, geometries, attributes, info ) {\n\n\tlet updateMap = new WeakMap();\n\n\tfunction update( object ) {\n\n\t\tconst frame = info.render.frame;\n\n\t\tconst geometry = object.geometry;\n\t\tconst buffergeometry = geometries.get( object, geometry );\n\n\t\t// Update once per frame\n\n\t\tif ( updateMap.get( buffergeometry ) !== frame ) {\n\n\t\t\tif ( geometry.isGeometry ) {\n\n\t\t\t\tbuffergeometry.updateFromObject( object );\n\n\t\t\t}\n\n\t\t\tgeometries.update( buffergeometry );\n\n\t\t\tupdateMap.set( buffergeometry, frame );\n\n\t\t}\n\n\t\tif ( object.isInstancedMesh ) {\n\n\t\t\tif ( object.hasEventListener( 'dispose', onInstancedMeshDispose ) === false ) {\n\n\t\t\t\tobject.addEventListener( 'dispose', onInstancedMeshDispose );\n\n\t\t\t}\n\n\t\t\tattributes.update( object.instanceMatrix, 34962 );\n\n\t\t\tif ( object.instanceColor !== null ) {\n\n\t\t\t\tattributes.update( object.instanceColor, 34962 );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn buffergeometry;\n\n\t}\n\n\tfunction dispose() {\n\n\t\tupdateMap = new WeakMap();\n\n\t}\n\n\tfunction onInstancedMeshDispose( event ) {\n\n\t\tconst instancedMesh = event.target;\n\n\t\tinstancedMesh.removeEventListener( 'dispose', onInstancedMeshDispose );\n\n\t\tattributes.remove( instancedMesh.instanceMatrix );\n\n\t\tif ( instancedMesh.instanceColor !== null ) attributes.remove( instancedMesh.instanceColor );\n\n\t}\n\n\treturn {\n\n\t\tupdate: update,\n\t\tdispose: dispose\n\n\t};\n\n}\n\nfunction DataTexture2DArray( data = null, width = 1, height = 1, depth = 1 ) {\n\n\tTexture.call( this, null );\n\n\tthis.image = { data, width, height, depth };\n\n\tthis.magFilter = NearestFilter;\n\tthis.minFilter = NearestFilter;\n\n\tthis.wrapR = ClampToEdgeWrapping;\n\n\tthis.generateMipmaps = false;\n\tthis.flipY = false;\n\n\tthis.needsUpdate = true;\n\n}\n\nDataTexture2DArray.prototype = Object.create( Texture.prototype );\nDataTexture2DArray.prototype.constructor = DataTexture2DArray;\nDataTexture2DArray.prototype.isDataTexture2DArray = true;\n\nfunction DataTexture3D( data = null, width = 1, height = 1, depth = 1 ) {\n\n\t// We're going to add .setXXX() methods for setting properties later.\n\t// Users can still set in DataTexture3D directly.\n\t//\n\t//\tconst texture = new THREE.DataTexture3D( data, width, height, depth );\n\t// \ttexture.anisotropy = 16;\n\t//\n\t// See #14839\n\n\tTexture.call( this, null );\n\n\tthis.image = { data, width, height, depth };\n\n\tthis.magFilter = NearestFilter;\n\tthis.minFilter = NearestFilter;\n\n\tthis.wrapR = ClampToEdgeWrapping;\n\n\tthis.generateMipmaps = false;\n\tthis.flipY = false;\n\n\tthis.needsUpdate = true;\n\n\n}\n\nDataTexture3D.prototype = Object.create( Texture.prototype );\nDataTexture3D.prototype.constructor = DataTexture3D;\nDataTexture3D.prototype.isDataTexture3D = true;\n\n/**\n * Uniforms of a program.\n * Those form a tree structure with a special top-level container for the root,\n * which you get by calling 'new WebGLUniforms( gl, program )'.\n *\n *\n * Properties of inner nodes including the top-level container:\n *\n * .seq - array of nested uniforms\n * .map - nested uniforms by name\n *\n *\n * Methods of all nodes except the top-level container:\n *\n * .setValue( gl, value, [textures] )\n *\n * \t\tuploads a uniform value(s)\n *  \tthe 'textures' parameter is needed for sampler uniforms\n *\n *\n * Static methods of the top-level container (textures factorizations):\n *\n * .upload( gl, seq, values, textures )\n *\n * \t\tsets uniforms in 'seq' to 'values[id].value'\n *\n * .seqWithValue( seq, values ) : filteredSeq\n *\n * \t\tfilters 'seq' entries with corresponding entry in values\n *\n *\n * Methods of the top-level container (textures factorizations):\n *\n * .setValue( gl, name, value, textures )\n *\n * \t\tsets uniform with  name 'name' to 'value'\n *\n * .setOptional( gl, obj, prop )\n *\n * \t\tlike .set for an optional property of the object\n *\n */\n\nconst emptyTexture = new Texture();\nconst emptyTexture2dArray = new DataTexture2DArray();\nconst emptyTexture3d = new DataTexture3D();\nconst emptyCubeTexture = new CubeTexture();\n\n// --- Utilities ---\n\n// Array Caches (provide typed arrays for temporary by size)\n\nconst arrayCacheF32 = [];\nconst arrayCacheI32 = [];\n\n// Float32Array caches used for uploading Matrix uniforms\n\nconst mat4array = new Float32Array( 16 );\nconst mat3array = new Float32Array( 9 );\nconst mat2array = new Float32Array( 4 );\n\n// Flattening for arrays of vectors and matrices\n\nfunction flatten( array, nBlocks, blockSize ) {\n\n\tconst firstElem = array[ 0 ];\n\n\tif ( firstElem <= 0 || firstElem > 0 ) return array;\n\t// unoptimized: ! isNaN( firstElem )\n\t// see http://jacksondunstan.com/articles/983\n\n\tconst n = nBlocks * blockSize;\n\tlet r = arrayCacheF32[ n ];\n\n\tif ( r === undefined ) {\n\n\t\tr = new Float32Array( n );\n\t\tarrayCacheF32[ n ] = r;\n\n\t}\n\n\tif ( nBlocks !== 0 ) {\n\n\t\tfirstElem.toArray( r, 0 );\n\n\t\tfor ( let i = 1, offset = 0; i !== nBlocks; ++ i ) {\n\n\t\t\toffset += blockSize;\n\t\t\tarray[ i ].toArray( r, offset );\n\n\t\t}\n\n\t}\n\n\treturn r;\n\n}\n\nfunction arraysEqual( a, b ) {\n\n\tif ( a.length !== b.length ) return false;\n\n\tfor ( let i = 0, l = a.length; i < l; i ++ ) {\n\n\t\tif ( a[ i ] !== b[ i ] ) return false;\n\n\t}\n\n\treturn true;\n\n}\n\nfunction copyArray( a, b ) {\n\n\tfor ( let i = 0, l = b.length; i < l; i ++ ) {\n\n\t\ta[ i ] = b[ i ];\n\n\t}\n\n}\n\n// Texture unit allocation\n\nfunction allocTexUnits( textures, n ) {\n\n\tlet r = arrayCacheI32[ n ];\n\n\tif ( r === undefined ) {\n\n\t\tr = new Int32Array( n );\n\t\tarrayCacheI32[ n ] = r;\n\n\t}\n\n\tfor ( let i = 0; i !== n; ++ i ) {\n\n\t\tr[ i ] = textures.allocateTextureUnit();\n\n\t}\n\n\treturn r;\n\n}\n\n// --- Setters ---\n\n// Note: Defining these methods externally, because they come in a bunch\n// and this way their names minify.\n\n// Single scalar\n\nfunction setValueV1f( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( cache[ 0 ] === v ) return;\n\n\tgl.uniform1f( this.addr, v );\n\n\tcache[ 0 ] = v;\n\n}\n\n// Single float vector (from flat array or THREE.VectorN)\n\nfunction setValueV2f( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( v.x !== undefined ) {\n\n\t\tif ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y ) {\n\n\t\t\tgl.uniform2f( this.addr, v.x, v.y );\n\n\t\t\tcache[ 0 ] = v.x;\n\t\t\tcache[ 1 ] = v.y;\n\n\t\t}\n\n\t} else {\n\n\t\tif ( arraysEqual( cache, v ) ) return;\n\n\t\tgl.uniform2fv( this.addr, v );\n\n\t\tcopyArray( cache, v );\n\n\t}\n\n}\n\nfunction setValueV3f( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( v.x !== undefined ) {\n\n\t\tif ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z ) {\n\n\t\t\tgl.uniform3f( this.addr, v.x, v.y, v.z );\n\n\t\t\tcache[ 0 ] = v.x;\n\t\t\tcache[ 1 ] = v.y;\n\t\t\tcache[ 2 ] = v.z;\n\n\t\t}\n\n\t} else if ( v.r !== undefined ) {\n\n\t\tif ( cache[ 0 ] !== v.r || cache[ 1 ] !== v.g || cache[ 2 ] !== v.b ) {\n\n\t\t\tgl.uniform3f( this.addr, v.r, v.g, v.b );\n\n\t\t\tcache[ 0 ] = v.r;\n\t\t\tcache[ 1 ] = v.g;\n\t\t\tcache[ 2 ] = v.b;\n\n\t\t}\n\n\t} else {\n\n\t\tif ( arraysEqual( cache, v ) ) return;\n\n\t\tgl.uniform3fv( this.addr, v );\n\n\t\tcopyArray( cache, v );\n\n\t}\n\n}\n\nfunction setValueV4f( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( v.x !== undefined ) {\n\n\t\tif ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z || cache[ 3 ] !== v.w ) {\n\n\t\t\tgl.uniform4f( this.addr, v.x, v.y, v.z, v.w );\n\n\t\t\tcache[ 0 ] = v.x;\n\t\t\tcache[ 1 ] = v.y;\n\t\t\tcache[ 2 ] = v.z;\n\t\t\tcache[ 3 ] = v.w;\n\n\t\t}\n\n\t} else {\n\n\t\tif ( arraysEqual( cache, v ) ) return;\n\n\t\tgl.uniform4fv( this.addr, v );\n\n\t\tcopyArray( cache, v );\n\n\t}\n\n}\n\n// Single matrix (from flat array or MatrixN)\n\nfunction setValueM2( gl, v ) {\n\n\tconst cache = this.cache;\n\tconst elements = v.elements;\n\n\tif ( elements === undefined ) {\n\n\t\tif ( arraysEqual( cache, v ) ) return;\n\n\t\tgl.uniformMatrix2fv( this.addr, false, v );\n\n\t\tcopyArray( cache, v );\n\n\t} else {\n\n\t\tif ( arraysEqual( cache, elements ) ) return;\n\n\t\tmat2array.set( elements );\n\n\t\tgl.uniformMatrix2fv( this.addr, false, mat2array );\n\n\t\tcopyArray( cache, elements );\n\n\t}\n\n}\n\nfunction setValueM3( gl, v ) {\n\n\tconst cache = this.cache;\n\tconst elements = v.elements;\n\n\tif ( elements === undefined ) {\n\n\t\tif ( arraysEqual( cache, v ) ) return;\n\n\t\tgl.uniformMatrix3fv( this.addr, false, v );\n\n\t\tcopyArray( cache, v );\n\n\t} else {\n\n\t\tif ( arraysEqual( cache, elements ) ) return;\n\n\t\tmat3array.set( elements );\n\n\t\tgl.uniformMatrix3fv( this.addr, false, mat3array );\n\n\t\tcopyArray( cache, elements );\n\n\t}\n\n}\n\nfunction setValueM4( gl, v ) {\n\n\tconst cache = this.cache;\n\tconst elements = v.elements;\n\n\tif ( elements === undefined ) {\n\n\t\tif ( arraysEqual( cache, v ) ) return;\n\n\t\tgl.uniformMatrix4fv( this.addr, false, v );\n\n\t\tcopyArray( cache, v );\n\n\t} else {\n\n\t\tif ( arraysEqual( cache, elements ) ) return;\n\n\t\tmat4array.set( elements );\n\n\t\tgl.uniformMatrix4fv( this.addr, false, mat4array );\n\n\t\tcopyArray( cache, elements );\n\n\t}\n\n}\n\n// Single texture (2D / Cube)\n\nfunction setValueT1( gl, v, textures ) {\n\n\tconst cache = this.cache;\n\tconst unit = textures.allocateTextureUnit();\n\n\tif ( cache[ 0 ] !== unit ) {\n\n\t\tgl.uniform1i( this.addr, unit );\n\t\tcache[ 0 ] = unit;\n\n\t}\n\n\ttextures.safeSetTexture2D( v || emptyTexture, unit );\n\n}\n\nfunction setValueT2DArray1( gl, v, textures ) {\n\n\tconst cache = this.cache;\n\tconst unit = textures.allocateTextureUnit();\n\n\tif ( cache[ 0 ] !== unit ) {\n\n\t\tgl.uniform1i( this.addr, unit );\n\t\tcache[ 0 ] = unit;\n\n\t}\n\n\ttextures.setTexture2DArray( v || emptyTexture2dArray, unit );\n\n}\n\nfunction setValueT3D1( gl, v, textures ) {\n\n\tconst cache = this.cache;\n\tconst unit = textures.allocateTextureUnit();\n\n\tif ( cache[ 0 ] !== unit ) {\n\n\t\tgl.uniform1i( this.addr, unit );\n\t\tcache[ 0 ] = unit;\n\n\t}\n\n\ttextures.setTexture3D( v || emptyTexture3d, unit );\n\n}\n\nfunction setValueT6( gl, v, textures ) {\n\n\tconst cache = this.cache;\n\tconst unit = textures.allocateTextureUnit();\n\n\tif ( cache[ 0 ] !== unit ) {\n\n\t\tgl.uniform1i( this.addr, unit );\n\t\tcache[ 0 ] = unit;\n\n\t}\n\n\ttextures.safeSetTextureCube( v || emptyCubeTexture, unit );\n\n}\n\n// Integer / Boolean vectors or arrays thereof (always flat arrays)\n\nfunction setValueV1i( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( cache[ 0 ] === v ) return;\n\n\tgl.uniform1i( this.addr, v );\n\n\tcache[ 0 ] = v;\n\n}\n\nfunction setValueV2i( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( arraysEqual( cache, v ) ) return;\n\n\tgl.uniform2iv( this.addr, v );\n\n\tcopyArray( cache, v );\n\n}\n\nfunction setValueV3i( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( arraysEqual( cache, v ) ) return;\n\n\tgl.uniform3iv( this.addr, v );\n\n\tcopyArray( cache, v );\n\n}\n\nfunction setValueV4i( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( arraysEqual( cache, v ) ) return;\n\n\tgl.uniform4iv( this.addr, v );\n\n\tcopyArray( cache, v );\n\n}\n\n// uint\n\nfunction setValueV1ui( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( cache[ 0 ] === v ) return;\n\n\tgl.uniform1ui( this.addr, v );\n\n\tcache[ 0 ] = v;\n\n}\n\n// Helper to pick the right setter for the singular case\n\nfunction getSingularSetter( type ) {\n\n\tswitch ( type ) {\n\n\t\tcase 0x1406: return setValueV1f; // FLOAT\n\t\tcase 0x8b50: return setValueV2f; // _VEC2\n\t\tcase 0x8b51: return setValueV3f; // _VEC3\n\t\tcase 0x8b52: return setValueV4f; // _VEC4\n\n\t\tcase 0x8b5a: return setValueM2; // _MAT2\n\t\tcase 0x8b5b: return setValueM3; // _MAT3\n\t\tcase 0x8b5c: return setValueM4; // _MAT4\n\n\t\tcase 0x1404: case 0x8b56: return setValueV1i; // INT, BOOL\n\t\tcase 0x8b53: case 0x8b57: return setValueV2i; // _VEC2\n\t\tcase 0x8b54: case 0x8b58: return setValueV3i; // _VEC3\n\t\tcase 0x8b55: case 0x8b59: return setValueV4i; // _VEC4\n\n\t\tcase 0x1405: return setValueV1ui; // UINT\n\n\t\tcase 0x8b5e: // SAMPLER_2D\n\t\tcase 0x8d66: // SAMPLER_EXTERNAL_OES\n\t\tcase 0x8dca: // INT_SAMPLER_2D\n\t\tcase 0x8dd2: // UNSIGNED_INT_SAMPLER_2D\n\t\tcase 0x8b62: // SAMPLER_2D_SHADOW\n\t\t\treturn setValueT1;\n\n\t\tcase 0x8b5f: // SAMPLER_3D\n\t\tcase 0x8dcb: // INT_SAMPLER_3D\n\t\tcase 0x8dd3: // UNSIGNED_INT_SAMPLER_3D\n\t\t\treturn setValueT3D1;\n\n\t\tcase 0x8b60: // SAMPLER_CUBE\n\t\tcase 0x8dcc: // INT_SAMPLER_CUBE\n\t\tcase 0x8dd4: // UNSIGNED_INT_SAMPLER_CUBE\n\t\tcase 0x8dc5: // SAMPLER_CUBE_SHADOW\n\t\t\treturn setValueT6;\n\n\t\tcase 0x8dc1: // SAMPLER_2D_ARRAY\n\t\tcase 0x8dcf: // INT_SAMPLER_2D_ARRAY\n\t\tcase 0x8dd7: // UNSIGNED_INT_SAMPLER_2D_ARRAY\n\t\tcase 0x8dc4: // SAMPLER_2D_ARRAY_SHADOW\n\t\t\treturn setValueT2DArray1;\n\n\t}\n\n}\n\n// Array of scalars\nfunction setValueV1fArray( gl, v ) {\n\n\tgl.uniform1fv( this.addr, v );\n\n}\n\n// Integer / Boolean vectors or arrays thereof (always flat arrays)\nfunction setValueV1iArray( gl, v ) {\n\n\tgl.uniform1iv( this.addr, v );\n\n}\n\nfunction setValueV2iArray( gl, v ) {\n\n\tgl.uniform2iv( this.addr, v );\n\n}\n\nfunction setValueV3iArray( gl, v ) {\n\n\tgl.uniform3iv( this.addr, v );\n\n}\n\nfunction setValueV4iArray( gl, v ) {\n\n\tgl.uniform4iv( this.addr, v );\n\n}\n\n\n// Array of vectors (flat or from THREE classes)\n\nfunction setValueV2fArray( gl, v ) {\n\n\tconst data = flatten( v, this.size, 2 );\n\n\tgl.uniform2fv( this.addr, data );\n\n}\n\nfunction setValueV3fArray( gl, v ) {\n\n\tconst data = flatten( v, this.size, 3 );\n\n\tgl.uniform3fv( this.addr, data );\n\n}\n\nfunction setValueV4fArray( gl, v ) {\n\n\tconst data = flatten( v, this.size, 4 );\n\n\tgl.uniform4fv( this.addr, data );\n\n}\n\n// Array of matrices (flat or from THREE clases)\n\nfunction setValueM2Array( gl, v ) {\n\n\tconst data = flatten( v, this.size, 4 );\n\n\tgl.uniformMatrix2fv( this.addr, false, data );\n\n}\n\nfunction setValueM3Array( gl, v ) {\n\n\tconst data = flatten( v, this.size, 9 );\n\n\tgl.uniformMatrix3fv( this.addr, false, data );\n\n}\n\nfunction setValueM4Array( gl, v ) {\n\n\tconst data = flatten( v, this.size, 16 );\n\n\tgl.uniformMatrix4fv( this.addr, false, data );\n\n}\n\n// Array of textures (2D / Cube)\n\nfunction setValueT1Array( gl, v, textures ) {\n\n\tconst n = v.length;\n\n\tconst units = allocTexUnits( textures, n );\n\n\tgl.uniform1iv( this.addr, units );\n\n\tfor ( let i = 0; i !== n; ++ i ) {\n\n\t\ttextures.safeSetTexture2D( v[ i ] || emptyTexture, units[ i ] );\n\n\t}\n\n}\n\nfunction setValueT6Array( gl, v, textures ) {\n\n\tconst n = v.length;\n\n\tconst units = allocTexUnits( textures, n );\n\n\tgl.uniform1iv( this.addr, units );\n\n\tfor ( let i = 0; i !== n; ++ i ) {\n\n\t\ttextures.safeSetTextureCube( v[ i ] || emptyCubeTexture, units[ i ] );\n\n\t}\n\n}\n\n// Helper to pick the right setter for a pure (bottom-level) array\n\nfunction getPureArraySetter( type ) {\n\n\tswitch ( type ) {\n\n\t\tcase 0x1406: return setValueV1fArray; // FLOAT\n\t\tcase 0x8b50: return setValueV2fArray; // _VEC2\n\t\tcase 0x8b51: return setValueV3fArray; // _VEC3\n\t\tcase 0x8b52: return setValueV4fArray; // _VEC4\n\n\t\tcase 0x8b5a: return setValueM2Array; // _MAT2\n\t\tcase 0x8b5b: return setValueM3Array; // _MAT3\n\t\tcase 0x8b5c: return setValueM4Array; // _MAT4\n\n\t\tcase 0x1404: case 0x8b56: return setValueV1iArray; // INT, BOOL\n\t\tcase 0x8b53: case 0x8b57: return setValueV2iArray; // _VEC2\n\t\tcase 0x8b54: case 0x8b58: return setValueV3iArray; // _VEC3\n\t\tcase 0x8b55: case 0x8b59: return setValueV4iArray; // _VEC4\n\n\t\tcase 0x8b5e: // SAMPLER_2D\n\t\tcase 0x8d66: // SAMPLER_EXTERNAL_OES\n\t\tcase 0x8dca: // INT_SAMPLER_2D\n\t\tcase 0x8dd2: // UNSIGNED_INT_SAMPLER_2D\n\t\tcase 0x8b62: // SAMPLER_2D_SHADOW\n\t\t\treturn setValueT1Array;\n\n\t\tcase 0x8b60: // SAMPLER_CUBE\n\t\tcase 0x8dcc: // INT_SAMPLER_CUBE\n\t\tcase 0x8dd4: // UNSIGNED_INT_SAMPLER_CUBE\n\t\tcase 0x8dc5: // SAMPLER_CUBE_SHADOW\n\t\t\treturn setValueT6Array;\n\n\t}\n\n}\n\n// --- Uniform Classes ---\n\nfunction SingleUniform( id, activeInfo, addr ) {\n\n\tthis.id = id;\n\tthis.addr = addr;\n\tthis.cache = [];\n\tthis.setValue = getSingularSetter( activeInfo.type );\n\n\t// this.path = activeInfo.name; // DEBUG\n\n}\n\nfunction PureArrayUniform( id, activeInfo, addr ) {\n\n\tthis.id = id;\n\tthis.addr = addr;\n\tthis.cache = [];\n\tthis.size = activeInfo.size;\n\tthis.setValue = getPureArraySetter( activeInfo.type );\n\n\t// this.path = activeInfo.name; // DEBUG\n\n}\n\nPureArrayUniform.prototype.updateCache = function ( data ) {\n\n\tconst cache = this.cache;\n\n\tif ( data instanceof Float32Array && cache.length !== data.length ) {\n\n\t\tthis.cache = new Float32Array( data.length );\n\n\t}\n\n\tcopyArray( cache, data );\n\n};\n\nfunction StructuredUniform( id ) {\n\n\tthis.id = id;\n\n\tthis.seq = [];\n\tthis.map = {};\n\n}\n\nStructuredUniform.prototype.setValue = function ( gl, value, textures ) {\n\n\tconst seq = this.seq;\n\n\tfor ( let i = 0, n = seq.length; i !== n; ++ i ) {\n\n\t\tconst u = seq[ i ];\n\t\tu.setValue( gl, value[ u.id ], textures );\n\n\t}\n\n};\n\n// --- Top-level ---\n\n// Parser - builds up the property tree from the path strings\n\nconst RePathPart = /(\\w+)(\\])?(\\[|\\.)?/g;\n\n// extracts\n// \t- the identifier (member name or array index)\n//  - followed by an optional right bracket (found when array index)\n//  - followed by an optional left bracket or dot (type of subscript)\n//\n// Note: These portions can be read in a non-overlapping fashion and\n// allow straightforward parsing of the hierarchy that WebGL encodes\n// in the uniform names.\n\nfunction addUniform( container, uniformObject ) {\n\n\tcontainer.seq.push( uniformObject );\n\tcontainer.map[ uniformObject.id ] = uniformObject;\n\n}\n\nfunction parseUniform( activeInfo, addr, container ) {\n\n\tconst path = activeInfo.name,\n\t\tpathLength = path.length;\n\n\t// reset RegExp object, because of the early exit of a previous run\n\tRePathPart.lastIndex = 0;\n\n\twhile ( true ) {\n\n\t\tconst match = RePathPart.exec( path ),\n\t\t\tmatchEnd = RePathPart.lastIndex;\n\n\t\tlet id = match[ 1 ];\n\t\tconst idIsIndex = match[ 2 ] === ']',\n\t\t\tsubscript = match[ 3 ];\n\n\t\tif ( idIsIndex ) id = id | 0; // convert to integer\n\n\t\tif ( subscript === undefined || subscript === '[' && matchEnd + 2 === pathLength ) {\n\n\t\t\t// bare name or \"pure\" bottom-level array \"[0]\" suffix\n\n\t\t\taddUniform( container, subscript === undefined ?\n\t\t\t\tnew SingleUniform( id, activeInfo, addr ) :\n\t\t\t\tnew PureArrayUniform( id, activeInfo, addr ) );\n\n\t\t\tbreak;\n\n\t\t} else {\n\n\t\t\t// step into inner node / create it in case it doesn't exist\n\n\t\t\tconst map = container.map;\n\t\t\tlet next = map[ id ];\n\n\t\t\tif ( next === undefined ) {\n\n\t\t\t\tnext = new StructuredUniform( id );\n\t\t\t\taddUniform( container, next );\n\n\t\t\t}\n\n\t\t\tcontainer = next;\n\n\t\t}\n\n\t}\n\n}\n\n// Root Container\n\nfunction WebGLUniforms( gl, program ) {\n\n\tthis.seq = [];\n\tthis.map = {};\n\n\tconst n = gl.getProgramParameter( program, 35718 );\n\n\tfor ( let i = 0; i < n; ++ i ) {\n\n\t\tconst info = gl.getActiveUniform( program, i ),\n\t\t\taddr = gl.getUniformLocation( program, info.name );\n\n\t\tparseUniform( info, addr, this );\n\n\t}\n\n}\n\nWebGLUniforms.prototype.setValue = function ( gl, name, value, textures ) {\n\n\tconst u = this.map[ name ];\n\n\tif ( u !== undefined ) u.setValue( gl, value, textures );\n\n};\n\nWebGLUniforms.prototype.setOptional = function ( gl, object, name ) {\n\n\tconst v = object[ name ];\n\n\tif ( v !== undefined ) this.setValue( gl, name, v );\n\n};\n\n\n// Static interface\n\nWebGLUniforms.upload = function ( gl, seq, values, textures ) {\n\n\tfor ( let i = 0, n = seq.length; i !== n; ++ i ) {\n\n\t\tconst u = seq[ i ],\n\t\t\tv = values[ u.id ];\n\n\t\tif ( v.needsUpdate !== false ) {\n\n\t\t\t// note: always updating when .needsUpdate is undefined\n\t\t\tu.setValue( gl, v.value, textures );\n\n\t\t}\n\n\t}\n\n};\n\nWebGLUniforms.seqWithValue = function ( seq, values ) {\n\n\tconst r = [];\n\n\tfor ( let i = 0, n = seq.length; i !== n; ++ i ) {\n\n\t\tconst u = seq[ i ];\n\t\tif ( u.id in values ) r.push( u );\n\n\t}\n\n\treturn r;\n\n};\n\nfunction WebGLShader( gl, type, string ) {\n\n\tconst shader = gl.createShader( type );\n\n\tgl.shaderSource( shader, string );\n\tgl.compileShader( shader );\n\n\treturn shader;\n\n}\n\nlet programIdCount = 0;\n\nfunction addLineNumbers( string ) {\n\n\tconst lines = string.split( '\\n' );\n\n\tfor ( let i = 0; i < lines.length; i ++ ) {\n\n\t\tlines[ i ] = ( i + 1 ) + ': ' + lines[ i ];\n\n\t}\n\n\treturn lines.join( '\\n' );\n\n}\n\nfunction getEncodingComponents( encoding ) {\n\n\tswitch ( encoding ) {\n\n\t\tcase LinearEncoding:\n\t\t\treturn [ 'Linear', '( value )' ];\n\t\tcase sRGBEncoding:\n\t\t\treturn [ 'sRGB', '( value )' ];\n\t\tcase RGBEEncoding:\n\t\t\treturn [ 'RGBE', '( value )' ];\n\t\tcase RGBM7Encoding:\n\t\t\treturn [ 'RGBM', '( value, 7.0 )' ];\n\t\tcase RGBM16Encoding:\n\t\t\treturn [ 'RGBM', '( value, 16.0 )' ];\n\t\tcase RGBDEncoding:\n\t\t\treturn [ 'RGBD', '( value, 256.0 )' ];\n\t\tcase GammaEncoding:\n\t\t\treturn [ 'Gamma', '( value, float( GAMMA_FACTOR ) )' ];\n\t\tcase LogLuvEncoding:\n\t\t\treturn [ 'LogLuv', '( value )' ];\n\t\tdefault:\n\t\t\tconsole.warn( 'THREE.WebGLProgram: Unsupported encoding:', encoding );\n\t\t\treturn [ 'Linear', '( value )' ];\n\n\t}\n\n}\n\nfunction getShaderErrors( gl, shader, type ) {\n\n\tconst status = gl.getShaderParameter( shader, 35713 );\n\tconst log = gl.getShaderInfoLog( shader ).trim();\n\n\tif ( status && log === '' ) return '';\n\n\t// --enable-privileged-webgl-extension\n\t// console.log( '**' + type + '**', gl.getExtension( 'WEBGL_debug_shaders' ).getTranslatedShaderSource( shader ) );\n\n\tconst source = gl.getShaderSource( shader );\n\n\treturn 'THREE.WebGLShader: gl.getShaderInfoLog() ' + type + '\\n' + log + addLineNumbers( source );\n\n}\n\nfunction getTexelDecodingFunction( functionName, encoding ) {\n\n\tconst components = getEncodingComponents( encoding );\n\treturn 'vec4 ' + functionName + '( vec4 value ) { return ' + components[ 0 ] + 'ToLinear' + components[ 1 ] + '; }';\n\n}\n\nfunction getTexelEncodingFunction( functionName, encoding ) {\n\n\tconst components = getEncodingComponents( encoding );\n\treturn 'vec4 ' + functionName + '( vec4 value ) { return LinearTo' + components[ 0 ] + components[ 1 ] + '; }';\n\n}\n\nfunction getToneMappingFunction( functionName, toneMapping ) {\n\n\tlet toneMappingName;\n\n\tswitch ( toneMapping ) {\n\n\t\tcase LinearToneMapping:\n\t\t\ttoneMappingName = 'Linear';\n\t\t\tbreak;\n\n\t\tcase ReinhardToneMapping:\n\t\t\ttoneMappingName = 'Reinhard';\n\t\t\tbreak;\n\n\t\tcase CineonToneMapping:\n\t\t\ttoneMappingName = 'OptimizedCineon';\n\t\t\tbreak;\n\n\t\tcase ACESFilmicToneMapping:\n\t\t\ttoneMappingName = 'ACESFilmic';\n\t\t\tbreak;\n\n\t\tcase CustomToneMapping:\n\t\t\ttoneMappingName = 'Custom';\n\t\t\tbreak;\n\n\t\tdefault:\n\t\t\tconsole.warn( 'THREE.WebGLProgram: Unsupported toneMapping:', toneMapping );\n\t\t\ttoneMappingName = 'Linear';\n\n\t}\n\n\treturn 'vec3 ' + functionName + '( vec3 color ) { return ' + toneMappingName + 'ToneMapping( color ); }';\n\n}\n\nfunction generateExtensions( parameters ) {\n\n\tconst chunks = [\n\t\t( parameters.extensionDerivatives || parameters.envMapCubeUV || parameters.bumpMap || parameters.tangentSpaceNormalMap || parameters.clearcoatNormalMap || parameters.flatShading || parameters.shaderID === 'physical' ) ? '#extension GL_OES_standard_derivatives : enable' : '',\n\t\t( parameters.extensionFragDepth || parameters.logarithmicDepthBuffer ) && parameters.rendererExtensionFragDepth ? '#extension GL_EXT_frag_depth : enable' : '',\n\t\t( parameters.extensionDrawBuffers && parameters.rendererExtensionDrawBuffers ) ? '#extension GL_EXT_draw_buffers : require' : '',\n\t\t( parameters.extensionShaderTextureLOD || parameters.envMap ) && parameters.rendererExtensionShaderTextureLod ? '#extension GL_EXT_shader_texture_lod : enable' : ''\n\t];\n\n\treturn chunks.filter( filterEmptyLine ).join( '\\n' );\n\n}\n\nfunction generateDefines( defines ) {\n\n\tconst chunks = [];\n\n\tfor ( const name in defines ) {\n\n\t\tconst value = defines[ name ];\n\n\t\tif ( value === false ) continue;\n\n\t\tchunks.push( '#define ' + name + ' ' + value );\n\n\t}\n\n\treturn chunks.join( '\\n' );\n\n}\n\nfunction fetchAttributeLocations( gl, program ) {\n\n\tconst attributes = {};\n\n\tconst n = gl.getProgramParameter( program, 35721 );\n\n\tfor ( let i = 0; i < n; i ++ ) {\n\n\t\tconst info = gl.getActiveAttrib( program, i );\n\t\tconst name = info.name;\n\n\t\t// console.log( 'THREE.WebGLProgram: ACTIVE VERTEX ATTRIBUTE:', name, i );\n\n\t\tattributes[ name ] = gl.getAttribLocation( program, name );\n\n\t}\n\n\treturn attributes;\n\n}\n\nfunction filterEmptyLine( string ) {\n\n\treturn string !== '';\n\n}\n\nfunction replaceLightNums( string, parameters ) {\n\n\treturn string\n\t\t.replace( /NUM_DIR_LIGHTS/g, parameters.numDirLights )\n\t\t.replace( /NUM_SPOT_LIGHTS/g, parameters.numSpotLights )\n\t\t.replace( /NUM_RECT_AREA_LIGHTS/g, parameters.numRectAreaLights )\n\t\t.replace( /NUM_POINT_LIGHTS/g, parameters.numPointLights )\n\t\t.replace( /NUM_HEMI_LIGHTS/g, parameters.numHemiLights )\n\t\t.replace( /NUM_DIR_LIGHT_SHADOWS/g, parameters.numDirLightShadows )\n\t\t.replace( /NUM_SPOT_LIGHT_SHADOWS/g, parameters.numSpotLightShadows )\n\t\t.replace( /NUM_POINT_LIGHT_SHADOWS/g, parameters.numPointLightShadows );\n\n}\n\nfunction replaceClippingPlaneNums( string, parameters ) {\n\n\treturn string\n\t\t.replace( /NUM_CLIPPING_PLANES/g, parameters.numClippingPlanes )\n\t\t.replace( /UNION_CLIPPING_PLANES/g, ( parameters.numClippingPlanes - parameters.numClipIntersection ) );\n\n}\n\n// Resolve Includes\n\nconst includePattern = /^[ \\t]*#include +<([\\w\\d./]+)>/gm;\n\nfunction resolveIncludes( string ) {\n\n\treturn string.replace( includePattern, includeReplacer );\n\n}\n\nfunction includeReplacer( match, include ) {\n\n\tconst string = ShaderChunk[ include ];\n\n\tif ( string === undefined ) {\n\n\t\tthrow new Error( 'Can not resolve #include <' + include + '>' );\n\n\t}\n\n\treturn resolveIncludes( string );\n\n}\n\n// Unroll Loops\n\nconst deprecatedUnrollLoopPattern = /#pragma unroll_loop[\\s]+?for \\( int i \\= (\\d+)\\; i < (\\d+)\\; i \\+\\+ \\) \\{([\\s\\S]+?)(?=\\})\\}/g;\nconst unrollLoopPattern = /#pragma unroll_loop_start\\s+for\\s*\\(\\s*int\\s+i\\s*=\\s*(\\d+)\\s*;\\s*i\\s*<\\s*(\\d+)\\s*;\\s*i\\s*\\+\\+\\s*\\)\\s*{([\\s\\S]+?)}\\s+#pragma unroll_loop_end/g;\n\nfunction unrollLoops( string ) {\n\n\treturn string\n\t\t.replace( unrollLoopPattern, loopReplacer )\n\t\t.replace( deprecatedUnrollLoopPattern, deprecatedLoopReplacer );\n\n}\n\nfunction deprecatedLoopReplacer( match, start, end, snippet ) {\n\n\tconsole.warn( 'WebGLProgram: #pragma unroll_loop shader syntax is deprecated. Please use #pragma unroll_loop_start syntax instead.' );\n\treturn loopReplacer( match, start, end, snippet );\n\n}\n\nfunction loopReplacer( match, start, end, snippet ) {\n\n\tlet string = '';\n\n\tfor ( let i = parseInt( start ); i < parseInt( end ); i ++ ) {\n\n\t\tstring += snippet\n\t\t\t.replace( /\\[\\s*i\\s*\\]/g, '[ ' + i + ' ]' )\n\t\t\t.replace( /UNROLLED_LOOP_INDEX/g, i );\n\n\t}\n\n\treturn string;\n\n}\n\n//\n\nfunction generatePrecision( parameters ) {\n\n\tlet precisionstring = 'precision ' + parameters.precision + ' float;\\nprecision ' + parameters.precision + ' int;';\n\n\tif ( parameters.precision === 'highp' ) {\n\n\t\tprecisionstring += '\\n#define HIGH_PRECISION';\n\n\t} else if ( parameters.precision === 'mediump' ) {\n\n\t\tprecisionstring += '\\n#define MEDIUM_PRECISION';\n\n\t} else if ( parameters.precision === 'lowp' ) {\n\n\t\tprecisionstring += '\\n#define LOW_PRECISION';\n\n\t}\n\n\treturn precisionstring;\n\n}\n\nfunction generateShadowMapTypeDefine( parameters ) {\n\n\tlet shadowMapTypeDefine = 'SHADOWMAP_TYPE_BASIC';\n\n\tif ( parameters.shadowMapType === PCFShadowMap ) {\n\n\t\tshadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF';\n\n\t} else if ( parameters.shadowMapType === PCFSoftShadowMap ) {\n\n\t\tshadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF_SOFT';\n\n\t} else if ( parameters.shadowMapType === VSMShadowMap ) {\n\n\t\tshadowMapTypeDefine = 'SHADOWMAP_TYPE_VSM';\n\n\t}\n\n\treturn shadowMapTypeDefine;\n\n}\n\nfunction generateEnvMapTypeDefine( parameters ) {\n\n\tlet envMapTypeDefine = 'ENVMAP_TYPE_CUBE';\n\n\tif ( parameters.envMap ) {\n\n\t\tswitch ( parameters.envMapMode ) {\n\n\t\t\tcase CubeReflectionMapping:\n\t\t\tcase CubeRefractionMapping:\n\t\t\t\tenvMapTypeDefine = 'ENVMAP_TYPE_CUBE';\n\t\t\t\tbreak;\n\n\t\t\tcase CubeUVReflectionMapping:\n\t\t\tcase CubeUVRefractionMapping:\n\t\t\t\tenvMapTypeDefine = 'ENVMAP_TYPE_CUBE_UV';\n\t\t\t\tbreak;\n\n\t\t}\n\n\t}\n\n\treturn envMapTypeDefine;\n\n}\n\nfunction generateEnvMapModeDefine( parameters ) {\n\n\tlet envMapModeDefine = 'ENVMAP_MODE_REFLECTION';\n\n\tif ( parameters.envMap ) {\n\n\t\tswitch ( parameters.envMapMode ) {\n\n\t\t\tcase CubeRefractionMapping:\n\t\t\tcase CubeUVRefractionMapping:\n\n\t\t\t\tenvMapModeDefine = 'ENVMAP_MODE_REFRACTION';\n\t\t\t\tbreak;\n\n\t\t}\n\n\t}\n\n\treturn envMapModeDefine;\n\n}\n\nfunction generateEnvMapBlendingDefine( parameters ) {\n\n\tlet envMapBlendingDefine = 'ENVMAP_BLENDING_NONE';\n\n\tif ( parameters.envMap ) {\n\n\t\tswitch ( parameters.combine ) {\n\n\t\t\tcase MultiplyOperation:\n\t\t\t\tenvMapBlendingDefine = 'ENVMAP_BLENDING_MULTIPLY';\n\t\t\t\tbreak;\n\n\t\t\tcase MixOperation:\n\t\t\t\tenvMapBlendingDefine = 'ENVMAP_BLENDING_MIX';\n\t\t\t\tbreak;\n\n\t\t\tcase AddOperation:\n\t\t\t\tenvMapBlendingDefine = 'ENVMAP_BLENDING_ADD';\n\t\t\t\tbreak;\n\n\t\t}\n\n\t}\n\n\treturn envMapBlendingDefine;\n\n}\n\nfunction WebGLProgram( renderer, cacheKey, parameters, bindingStates ) {\n\n\tconst gl = renderer.getContext();\n\n\tconst defines = parameters.defines;\n\n\tlet vertexShader = parameters.vertexShader;\n\tlet fragmentShader = parameters.fragmentShader;\n\n\tconst shadowMapTypeDefine = generateShadowMapTypeDefine( parameters );\n\tconst envMapTypeDefine = generateEnvMapTypeDefine( parameters );\n\tconst envMapModeDefine = generateEnvMapModeDefine( parameters );\n\tconst envMapBlendingDefine = generateEnvMapBlendingDefine( parameters );\n\n\n\tconst gammaFactorDefine = ( renderer.gammaFactor > 0 ) ? renderer.gammaFactor : 1.0;\n\n\tconst customExtensions = parameters.isWebGL2 ? '' : generateExtensions( parameters );\n\n\tconst customDefines = generateDefines( defines );\n\n\tconst program = gl.createProgram();\n\n\tlet prefixVertex, prefixFragment;\n\tlet versionString = parameters.glslVersion ? '#version ' + parameters.glslVersion + '\\n' : '';\n\n\tif ( parameters.isRawShaderMaterial ) {\n\n\t\tprefixVertex = [\n\n\t\t\tcustomDefines\n\n\t\t].filter( filterEmptyLine ).join( '\\n' );\n\n\t\tif ( prefixVertex.length > 0 ) {\n\n\t\t\tprefixVertex += '\\n';\n\n\t\t}\n\n\t\tprefixFragment = [\n\n\t\t\tcustomExtensions,\n\t\t\tcustomDefines\n\n\t\t].filter( filterEmptyLine ).join( '\\n' );\n\n\t\tif ( prefixFragment.length > 0 ) {\n\n\t\t\tprefixFragment += '\\n';\n\n\t\t}\n\n\t} else {\n\n\t\tprefixVertex = [\n\n\t\t\tgeneratePrecision( parameters ),\n\n\t\t\t'#define SHADER_NAME ' + parameters.shaderName,\n\n\t\t\tcustomDefines,\n\n\t\t\tparameters.instancing ? '#define USE_INSTANCING' : '',\n\t\t\tparameters.instancingColor ? '#define USE_INSTANCING_COLOR' : '',\n\n\t\t\tparameters.supportsVertexTextures ? '#define VERTEX_TEXTURES' : '',\n\n\t\t\t'#define GAMMA_FACTOR ' + gammaFactorDefine,\n\n\t\t\t'#define MAX_BONES ' + parameters.maxBones,\n\t\t\t( parameters.useFog && parameters.fog ) ? '#define USE_FOG' : '',\n\t\t\t( parameters.useFog && parameters.fogExp2 ) ? '#define FOG_EXP2' : '',\n\n\t\t\tparameters.map ? '#define USE_MAP' : '',\n\t\t\tparameters.envMap ? '#define USE_ENVMAP' : '',\n\t\t\tparameters.envMap ? '#define ' + envMapModeDefine : '',\n\t\t\tparameters.lightMap ? '#define USE_LIGHTMAP' : '',\n\t\t\tparameters.aoMap ? '#define USE_AOMAP' : '',\n\t\t\tparameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '',\n\t\t\tparameters.bumpMap ? '#define USE_BUMPMAP' : '',\n\t\t\tparameters.normalMap ? '#define USE_NORMALMAP' : '',\n\t\t\t( parameters.normalMap && parameters.objectSpaceNormalMap ) ? '#define OBJECTSPACE_NORMALMAP' : '',\n\t\t\t( parameters.normalMap && parameters.tangentSpaceNormalMap ) ? '#define TANGENTSPACE_NORMALMAP' : '',\n\n\t\t\tparameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '',\n\t\t\tparameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '',\n\t\t\tparameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '',\n\t\t\tparameters.displacementMap && parameters.supportsVertexTextures ? '#define USE_DISPLACEMENTMAP' : '',\n\t\t\tparameters.specularMap ? '#define USE_SPECULARMAP' : '',\n\t\t\tparameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '',\n\t\t\tparameters.metalnessMap ? '#define USE_METALNESSMAP' : '',\n\t\t\tparameters.alphaMap ? '#define USE_ALPHAMAP' : '',\n\t\t\tparameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '',\n\n\t\t\tparameters.vertexTangents ? '#define USE_TANGENT' : '',\n\t\t\tparameters.vertexColors ? '#define USE_COLOR' : '',\n\t\t\tparameters.vertexUvs ? '#define USE_UV' : '',\n\t\t\tparameters.uvsVertexOnly ? '#define UVS_VERTEX_ONLY' : '',\n\n\t\t\tparameters.flatShading ? '#define FLAT_SHADED' : '',\n\n\t\t\tparameters.skinning ? '#define USE_SKINNING' : '',\n\t\t\tparameters.useVertexTexture ? '#define BONE_TEXTURE' : '',\n\n\t\t\tparameters.morphTargets ? '#define USE_MORPHTARGETS' : '',\n\t\t\tparameters.morphNormals && parameters.flatShading === false ? '#define USE_MORPHNORMALS' : '',\n\t\t\tparameters.doubleSided ? '#define DOUBLE_SIDED' : '',\n\t\t\tparameters.flipSided ? '#define FLIP_SIDED' : '',\n\n\t\t\tparameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '',\n\t\t\tparameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '',\n\n\t\t\tparameters.sizeAttenuation ? '#define USE_SIZEATTENUATION' : '',\n\n\t\t\tparameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '',\n\t\t\t( parameters.logarithmicDepthBuffer && parameters.rendererExtensionFragDepth ) ? '#define USE_LOGDEPTHBUF_EXT' : '',\n\n\t\t\t'uniform mat4 modelMatrix;',\n\t\t\t'uniform mat4 modelViewMatrix;',\n\t\t\t'uniform mat4 projectionMatrix;',\n\t\t\t'uniform mat4 viewMatrix;',\n\t\t\t'uniform mat3 normalMatrix;',\n\t\t\t'uniform vec3 cameraPosition;',\n\t\t\t'uniform bool isOrthographic;',\n\n\t\t\t'#ifdef USE_INSTANCING',\n\n\t\t\t'\tattribute mat4 instanceMatrix;',\n\n\t\t\t'#endif',\n\n\t\t\t'#ifdef USE_INSTANCING_COLOR',\n\n\t\t\t'\tattribute vec3 instanceColor;',\n\n\t\t\t'#endif',\n\n\t\t\t'attribute vec3 position;',\n\t\t\t'attribute vec3 normal;',\n\t\t\t'attribute vec2 uv;',\n\n\t\t\t'#ifdef USE_TANGENT',\n\n\t\t\t'\tattribute vec4 tangent;',\n\n\t\t\t'#endif',\n\n\t\t\t'#ifdef USE_COLOR',\n\n\t\t\t'\tattribute vec3 color;',\n\n\t\t\t'#endif',\n\n\t\t\t'#ifdef USE_MORPHTARGETS',\n\n\t\t\t'\tattribute vec3 morphTarget0;',\n\t\t\t'\tattribute vec3 morphTarget1;',\n\t\t\t'\tattribute vec3 morphTarget2;',\n\t\t\t'\tattribute vec3 morphTarget3;',\n\n\t\t\t'\t#ifdef USE_MORPHNORMALS',\n\n\t\t\t'\t\tattribute vec3 morphNormal0;',\n\t\t\t'\t\tattribute vec3 morphNormal1;',\n\t\t\t'\t\tattribute vec3 morphNormal2;',\n\t\t\t'\t\tattribute vec3 morphNormal3;',\n\n\t\t\t'\t#else',\n\n\t\t\t'\t\tattribute vec3 morphTarget4;',\n\t\t\t'\t\tattribute vec3 morphTarget5;',\n\t\t\t'\t\tattribute vec3 morphTarget6;',\n\t\t\t'\t\tattribute vec3 morphTarget7;',\n\n\t\t\t'\t#endif',\n\n\t\t\t'#endif',\n\n\t\t\t'#ifdef USE_SKINNING',\n\n\t\t\t'\tattribute vec4 skinIndex;',\n\t\t\t'\tattribute vec4 skinWeight;',\n\n\t\t\t'#endif',\n\n\t\t\t'\\n'\n\n\t\t].filter( filterEmptyLine ).join( '\\n' );\n\n\t\tprefixFragment = [\n\n\t\t\tcustomExtensions,\n\n\t\t\tgeneratePrecision( parameters ),\n\n\t\t\t'#define SHADER_NAME ' + parameters.shaderName,\n\n\t\t\tcustomDefines,\n\n\t\t\tparameters.alphaTest ? '#define ALPHATEST ' + parameters.alphaTest + ( parameters.alphaTest % 1 ? '' : '.0' ) : '', // add '.0' if integer\n\n\t\t\t'#define GAMMA_FACTOR ' + gammaFactorDefine,\n\n\t\t\t( parameters.useFog && parameters.fog ) ? '#define USE_FOG' : '',\n\t\t\t( parameters.useFog && parameters.fogExp2 ) ? '#define FOG_EXP2' : '',\n\n\t\t\tparameters.map ? '#define USE_MAP' : '',\n\t\t\tparameters.matcap ? '#define USE_MATCAP' : '',\n\t\t\tparameters.envMap ? '#define USE_ENVMAP' : '',\n\t\t\tparameters.envMap ? '#define ' + envMapTypeDefine : '',\n\t\t\tparameters.envMap ? '#define ' + envMapModeDefine : '',\n\t\t\tparameters.envMap ? '#define ' + envMapBlendingDefine : '',\n\t\t\tparameters.lightMap ? '#define USE_LIGHTMAP' : '',\n\t\t\tparameters.aoMap ? '#define USE_AOMAP' : '',\n\t\t\tparameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '',\n\t\t\tparameters.bumpMap ? '#define USE_BUMPMAP' : '',\n\t\t\tparameters.normalMap ? '#define USE_NORMALMAP' : '',\n\t\t\t( parameters.normalMap && parameters.objectSpaceNormalMap ) ? '#define OBJECTSPACE_NORMALMAP' : '',\n\t\t\t( parameters.normalMap && parameters.tangentSpaceNormalMap ) ? '#define TANGENTSPACE_NORMALMAP' : '',\n\t\t\tparameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '',\n\t\t\tparameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '',\n\t\t\tparameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '',\n\t\t\tparameters.specularMap ? '#define USE_SPECULARMAP' : '',\n\t\t\tparameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '',\n\t\t\tparameters.metalnessMap ? '#define USE_METALNESSMAP' : '',\n\t\t\tparameters.alphaMap ? '#define USE_ALPHAMAP' : '',\n\n\t\t\tparameters.sheen ? '#define USE_SHEEN' : '',\n\t\t\tparameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '',\n\n\t\t\tparameters.vertexTangents ? '#define USE_TANGENT' : '',\n\t\t\tparameters.vertexColors || parameters.instancingColor ? '#define USE_COLOR' : '',\n\t\t\tparameters.vertexUvs ? '#define USE_UV' : '',\n\t\t\tparameters.uvsVertexOnly ? '#define UVS_VERTEX_ONLY' : '',\n\n\t\t\tparameters.gradientMap ? '#define USE_GRADIENTMAP' : '',\n\n\t\t\tparameters.flatShading ? '#define FLAT_SHADED' : '',\n\n\t\t\tparameters.doubleSided ? '#define DOUBLE_SIDED' : '',\n\t\t\tparameters.flipSided ? '#define FLIP_SIDED' : '',\n\n\t\t\tparameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '',\n\t\t\tparameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '',\n\n\t\t\tparameters.premultipliedAlpha ? '#define PREMULTIPLIED_ALPHA' : '',\n\n\t\t\tparameters.physicallyCorrectLights ? '#define PHYSICALLY_CORRECT_LIGHTS' : '',\n\n\t\t\tparameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '',\n\t\t\t( parameters.logarithmicDepthBuffer && parameters.rendererExtensionFragDepth ) ? '#define USE_LOGDEPTHBUF_EXT' : '',\n\n\t\t\t( ( parameters.extensionShaderTextureLOD || parameters.envMap ) && parameters.rendererExtensionShaderTextureLod ) ? '#define TEXTURE_LOD_EXT' : '',\n\n\t\t\t'uniform mat4 viewMatrix;',\n\t\t\t'uniform vec3 cameraPosition;',\n\t\t\t'uniform bool isOrthographic;',\n\n\t\t\t( parameters.toneMapping !== NoToneMapping ) ? '#define TONE_MAPPING' : '',\n\t\t\t( parameters.toneMapping !== NoToneMapping ) ? ShaderChunk[ 'tonemapping_pars_fragment' ] : '', // this code is required here because it is used by the toneMapping() function defined below\n\t\t\t( parameters.toneMapping !== NoToneMapping ) ? getToneMappingFunction( 'toneMapping', parameters.toneMapping ) : '',\n\n\t\t\tparameters.dithering ? '#define DITHERING' : '',\n\n\t\t\tShaderChunk[ 'encodings_pars_fragment' ], // this code is required here because it is used by the various encoding/decoding function defined below\n\t\t\tparameters.map ? getTexelDecodingFunction( 'mapTexelToLinear', parameters.mapEncoding ) : '',\n\t\t\tparameters.matcap ? getTexelDecodingFunction( 'matcapTexelToLinear', parameters.matcapEncoding ) : '',\n\t\t\tparameters.envMap ? getTexelDecodingFunction( 'envMapTexelToLinear', parameters.envMapEncoding ) : '',\n\t\t\tparameters.emissiveMap ? getTexelDecodingFunction( 'emissiveMapTexelToLinear', parameters.emissiveMapEncoding ) : '',\n\t\t\tparameters.lightMap ? getTexelDecodingFunction( 'lightMapTexelToLinear', parameters.lightMapEncoding ) : '',\n\t\t\tgetTexelEncodingFunction( 'linearToOutputTexel', parameters.outputEncoding ),\n\n\t\t\tparameters.depthPacking ? '#define DEPTH_PACKING ' + parameters.depthPacking : '',\n\n\t\t\t'\\n'\n\n\t\t].filter( filterEmptyLine ).join( '\\n' );\n\n\t}\n\n\tvertexShader = resolveIncludes( vertexShader );\n\tvertexShader = replaceLightNums( vertexShader, parameters );\n\tvertexShader = replaceClippingPlaneNums( vertexShader, parameters );\n\n\tfragmentShader = resolveIncludes( fragmentShader );\n\tfragmentShader = replaceLightNums( fragmentShader, parameters );\n\tfragmentShader = replaceClippingPlaneNums( fragmentShader, parameters );\n\n\tvertexShader = unrollLoops( vertexShader );\n\tfragmentShader = unrollLoops( fragmentShader );\n\n\tif ( parameters.isWebGL2 && parameters.isRawShaderMaterial !== true ) {\n\n\t\t// GLSL 3.0 conversion for built-in materials and ShaderMaterial\n\n\t\tversionString = '#version 300 es\\n';\n\n\t\tprefixVertex = [\n\t\t\t'#define attribute in',\n\t\t\t'#define varying out',\n\t\t\t'#define texture2D texture'\n\t\t].join( '\\n' ) + '\\n' + prefixVertex;\n\n\t\tprefixFragment = [\n\t\t\t'#define varying in',\n\t\t\t( parameters.glslVersion === GLSL3 ) ? '' : 'out highp vec4 pc_fragColor;',\n\t\t\t( parameters.glslVersion === GLSL3 ) ? '' : '#define gl_FragColor pc_fragColor',\n\t\t\t'#define gl_FragDepthEXT gl_FragDepth',\n\t\t\t'#define texture2D texture',\n\t\t\t'#define textureCube texture',\n\t\t\t'#define texture2DProj textureProj',\n\t\t\t'#define texture2DLodEXT textureLod',\n\t\t\t'#define texture2DProjLodEXT textureProjLod',\n\t\t\t'#define textureCubeLodEXT textureLod',\n\t\t\t'#define texture2DGradEXT textureGrad',\n\t\t\t'#define texture2DProjGradEXT textureProjGrad',\n\t\t\t'#define textureCubeGradEXT textureGrad'\n\t\t].join( '\\n' ) + '\\n' + prefixFragment;\n\n\t}\n\n\tconst vertexGlsl = versionString + prefixVertex + vertexShader;\n\tconst fragmentGlsl = versionString + prefixFragment + fragmentShader;\n\n\t// console.log( '*VERTEX*', vertexGlsl );\n\t// console.log( '*FRAGMENT*', fragmentGlsl );\n\n\tconst glVertexShader = WebGLShader( gl, 35633, vertexGlsl );\n\tconst glFragmentShader = WebGLShader( gl, 35632, fragmentGlsl );\n\n\tgl.attachShader( program, glVertexShader );\n\tgl.attachShader( program, glFragmentShader );\n\n\t// Force a particular attribute to index 0.\n\n\tif ( parameters.index0AttributeName !== undefined ) {\n\n\t\tgl.bindAttribLocation( program, 0, parameters.index0AttributeName );\n\n\t} else if ( parameters.morphTargets === true ) {\n\n\t\t// programs with morphTargets displace position out of attribute 0\n\t\tgl.bindAttribLocation( program, 0, 'position' );\n\n\t}\n\n\tgl.linkProgram( program );\n\n\t// check for link errors\n\tif ( renderer.debug.checkShaderErrors ) {\n\n\t\tconst programLog = gl.getProgramInfoLog( program ).trim();\n\t\tconst vertexLog = gl.getShaderInfoLog( glVertexShader ).trim();\n\t\tconst fragmentLog = gl.getShaderInfoLog( glFragmentShader ).trim();\n\n\t\tlet runnable = true;\n\t\tlet haveDiagnostics = true;\n\n\t\tif ( gl.getProgramParameter( program, 35714 ) === false ) {\n\n\t\t\trunnable = false;\n\n\t\t\tconst vertexErrors = getShaderErrors( gl, glVertexShader, 'vertex' );\n\t\t\tconst fragmentErrors = getShaderErrors( gl, glFragmentShader, 'fragment' );\n\n\t\t\tconsole.error( 'THREE.WebGLProgram: shader error: ', gl.getError(), '35715', gl.getProgramParameter( program, 35715 ), 'gl.getProgramInfoLog', programLog, vertexErrors, fragmentErrors );\n\n\t\t} else if ( programLog !== '' ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLProgram: gl.getProgramInfoLog()', programLog );\n\n\t\t} else if ( vertexLog === '' || fragmentLog === '' ) {\n\n\t\t\thaveDiagnostics = false;\n\n\t\t}\n\n\t\tif ( haveDiagnostics ) {\n\n\t\t\tthis.diagnostics = {\n\n\t\t\t\trunnable: runnable,\n\n\t\t\t\tprogramLog: programLog,\n\n\t\t\t\tvertexShader: {\n\n\t\t\t\t\tlog: vertexLog,\n\t\t\t\t\tprefix: prefixVertex\n\n\t\t\t\t},\n\n\t\t\t\tfragmentShader: {\n\n\t\t\t\t\tlog: fragmentLog,\n\t\t\t\t\tprefix: prefixFragment\n\n\t\t\t\t}\n\n\t\t\t};\n\n\t\t}\n\n\t}\n\n\t// Clean up\n\n\t// Crashes in iOS9 and iOS10. #18402\n\t// gl.detachShader( program, glVertexShader );\n\t// gl.detachShader( program, glFragmentShader );\n\n\tgl.deleteShader( glVertexShader );\n\tgl.deleteShader( glFragmentShader );\n\n\t// set up caching for uniform locations\n\n\tlet cachedUniforms;\n\n\tthis.getUniforms = function () {\n\n\t\tif ( cachedUniforms === undefined ) {\n\n\t\t\tcachedUniforms = new WebGLUniforms( gl, program );\n\n\t\t}\n\n\t\treturn cachedUniforms;\n\n\t};\n\n\t// set up caching for attribute locations\n\n\tlet cachedAttributes;\n\n\tthis.getAttributes = function () {\n\n\t\tif ( cachedAttributes === undefined ) {\n\n\t\t\tcachedAttributes = fetchAttributeLocations( gl, program );\n\n\t\t}\n\n\t\treturn cachedAttributes;\n\n\t};\n\n\t// free resource\n\n\tthis.destroy = function () {\n\n\t\tbindingStates.releaseStatesOfProgram( this );\n\n\t\tgl.deleteProgram( program );\n\t\tthis.program = undefined;\n\n\t};\n\n\t//\n\n\tthis.name = parameters.shaderName;\n\tthis.id = programIdCount ++;\n\tthis.cacheKey = cacheKey;\n\tthis.usedTimes = 1;\n\tthis.program = program;\n\tthis.vertexShader = glVertexShader;\n\tthis.fragmentShader = glFragmentShader;\n\n\treturn this;\n\n}\n\nfunction WebGLPrograms( renderer, cubemaps, extensions, capabilities, bindingStates, clipping ) {\n\n\tconst programs = [];\n\n\tconst isWebGL2 = capabilities.isWebGL2;\n\tconst logarithmicDepthBuffer = capabilities.logarithmicDepthBuffer;\n\tconst floatVertexTextures = capabilities.floatVertexTextures;\n\tconst maxVertexUniforms = capabilities.maxVertexUniforms;\n\tconst vertexTextures = capabilities.vertexTextures;\n\n\tlet precision = capabilities.precision;\n\n\tconst shaderIDs = {\n\t\tMeshDepthMaterial: 'depth',\n\t\tMeshDistanceMaterial: 'distanceRGBA',\n\t\tMeshNormalMaterial: 'normal',\n\t\tMeshBasicMaterial: 'basic',\n\t\tMeshLambertMaterial: 'lambert',\n\t\tMeshPhongMaterial: 'phong',\n\t\tMeshToonMaterial: 'toon',\n\t\tMeshStandardMaterial: 'physical',\n\t\tMeshPhysicalMaterial: 'physical',\n\t\tMeshMatcapMaterial: 'matcap',\n\t\tLineBasicMaterial: 'basic',\n\t\tLineDashedMaterial: 'dashed',\n\t\tPointsMaterial: 'points',\n\t\tShadowMaterial: 'shadow',\n\t\tSpriteMaterial: 'sprite'\n\t};\n\n\tconst parameterNames = [\n\t\t'precision', 'isWebGL2', 'supportsVertexTextures', 'outputEncoding', 'instancing', 'instancingColor',\n\t\t'map', 'mapEncoding', 'matcap', 'matcapEncoding', 'envMap', 'envMapMode', 'envMapEncoding', 'envMapCubeUV',\n\t\t'lightMap', 'lightMapEncoding', 'aoMap', 'emissiveMap', 'emissiveMapEncoding', 'bumpMap', 'normalMap', 'objectSpaceNormalMap', 'tangentSpaceNormalMap', 'clearcoatMap', 'clearcoatRoughnessMap', 'clearcoatNormalMap', 'displacementMap', 'specularMap',\n\t\t'roughnessMap', 'metalnessMap', 'gradientMap',\n\t\t'alphaMap', 'combine', 'vertexColors', 'vertexTangents', 'vertexUvs', 'uvsVertexOnly', 'fog', 'useFog', 'fogExp2',\n\t\t'flatShading', 'sizeAttenuation', 'logarithmicDepthBuffer', 'skinning',\n\t\t'maxBones', 'useVertexTexture', 'morphTargets', 'morphNormals',\n\t\t'maxMorphTargets', 'maxMorphNormals', 'premultipliedAlpha',\n\t\t'numDirLights', 'numPointLights', 'numSpotLights', 'numHemiLights', 'numRectAreaLights',\n\t\t'numDirLightShadows', 'numPointLightShadows', 'numSpotLightShadows',\n\t\t'shadowMapEnabled', 'shadowMapType', 'toneMapping', 'physicallyCorrectLights',\n\t\t'alphaTest', 'doubleSided', 'flipSided', 'numClippingPlanes', 'numClipIntersection', 'depthPacking', 'dithering',\n\t\t'sheen', 'transmissionMap'\n\t];\n\n\tfunction getMaxBones( object ) {\n\n\t\tconst skeleton = object.skeleton;\n\t\tconst bones = skeleton.bones;\n\n\t\tif ( floatVertexTextures ) {\n\n\t\t\treturn 1024;\n\n\t\t} else {\n\n\t\t\t// default for when object is not specified\n\t\t\t// ( for example when prebuilding shader to be used with multiple objects )\n\t\t\t//\n\t\t\t//  - leave some extra space for other uniforms\n\t\t\t//  - limit here is ANGLE's 254 max uniform vectors\n\t\t\t//    (up to 54 should be safe)\n\n\t\t\tconst nVertexUniforms = maxVertexUniforms;\n\t\t\tconst nVertexMatrices = Math.floor( ( nVertexUniforms - 20 ) / 4 );\n\n\t\t\tconst maxBones = Math.min( nVertexMatrices, bones.length );\n\n\t\t\tif ( maxBones < bones.length ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Skeleton has ' + bones.length + ' bones. This GPU supports ' + maxBones + '.' );\n\t\t\t\treturn 0;\n\n\t\t\t}\n\n\t\t\treturn maxBones;\n\n\t\t}\n\n\t}\n\n\tfunction getTextureEncodingFromMap( map ) {\n\n\t\tlet encoding;\n\n\t\tif ( map && map.isTexture ) {\n\n\t\t\tencoding = map.encoding;\n\n\t\t} else if ( map && map.isWebGLRenderTarget ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLPrograms.getTextureEncodingFromMap: don\\'t use render targets as textures. Use their .texture property instead.' );\n\t\t\tencoding = map.texture.encoding;\n\n\t\t} else {\n\n\t\t\tencoding = LinearEncoding;\n\n\t\t}\n\n\t\treturn encoding;\n\n\t}\n\n\tfunction getParameters( material, lights, shadows, scene, object ) {\n\n\t\tconst fog = scene.fog;\n\t\tconst environment = material.isMeshStandardMaterial ? scene.environment : null;\n\n\t\tconst envMap = cubemaps.get( material.envMap || environment );\n\n\t\tconst shaderID = shaderIDs[ material.type ];\n\n\t\t// heuristics to create shader parameters according to lights in the scene\n\t\t// (not to blow over maxLights budget)\n\n\t\tconst maxBones = object.isSkinnedMesh ? getMaxBones( object ) : 0;\n\n\t\tif ( material.precision !== null ) {\n\n\t\t\tprecision = capabilities.getMaxPrecision( material.precision );\n\n\t\t\tif ( precision !== material.precision ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLProgram.getParameters:', material.precision, 'not supported, using', precision, 'instead.' );\n\n\t\t\t}\n\n\t\t}\n\n\t\tlet vertexShader, fragmentShader;\n\n\t\tif ( shaderID ) {\n\n\t\t\tconst shader = ShaderLib[ shaderID ];\n\n\t\t\tvertexShader = shader.vertexShader;\n\t\t\tfragmentShader = shader.fragmentShader;\n\n\t\t} else {\n\n\t\t\tvertexShader = material.vertexShader;\n\t\t\tfragmentShader = material.fragmentShader;\n\n\t\t}\n\n\t\tconst currentRenderTarget = renderer.getRenderTarget();\n\n\t\tconst parameters = {\n\n\t\t\tisWebGL2: isWebGL2,\n\n\t\t\tshaderID: shaderID,\n\t\t\tshaderName: material.type,\n\n\t\t\tvertexShader: vertexShader,\n\t\t\tfragmentShader: fragmentShader,\n\t\t\tdefines: material.defines,\n\n\t\t\tisRawShaderMaterial: material.isRawShaderMaterial === true,\n\t\t\tglslVersion: material.glslVersion,\n\n\t\t\tprecision: precision,\n\n\t\t\tinstancing: object.isInstancedMesh === true,\n\t\t\tinstancingColor: object.isInstancedMesh === true && object.instanceColor !== null,\n\n\t\t\tsupportsVertexTextures: vertexTextures,\n\t\t\toutputEncoding: ( currentRenderTarget !== null ) ? getTextureEncodingFromMap( currentRenderTarget.texture ) : renderer.outputEncoding,\n\t\t\tmap: !! material.map,\n\t\t\tmapEncoding: getTextureEncodingFromMap( material.map ),\n\t\t\tmatcap: !! material.matcap,\n\t\t\tmatcapEncoding: getTextureEncodingFromMap( material.matcap ),\n\t\t\tenvMap: !! envMap,\n\t\t\tenvMapMode: envMap && envMap.mapping,\n\t\t\tenvMapEncoding: getTextureEncodingFromMap( envMap ),\n\t\t\tenvMapCubeUV: ( !! envMap ) && ( ( envMap.mapping === CubeUVReflectionMapping ) || ( envMap.mapping === CubeUVRefractionMapping ) ),\n\t\t\tlightMap: !! material.lightMap,\n\t\t\tlightMapEncoding: getTextureEncodingFromMap( material.lightMap ),\n\t\t\taoMap: !! material.aoMap,\n\t\t\temissiveMap: !! material.emissiveMap,\n\t\t\temissiveMapEncoding: getTextureEncodingFromMap( material.emissiveMap ),\n\t\t\tbumpMap: !! material.bumpMap,\n\t\t\tnormalMap: !! material.normalMap,\n\t\t\tobjectSpaceNormalMap: material.normalMapType === ObjectSpaceNormalMap,\n\t\t\ttangentSpaceNormalMap: material.normalMapType === TangentSpaceNormalMap,\n\t\t\tclearcoatMap: !! material.clearcoatMap,\n\t\t\tclearcoatRoughnessMap: !! material.clearcoatRoughnessMap,\n\t\t\tclearcoatNormalMap: !! material.clearcoatNormalMap,\n\t\t\tdisplacementMap: !! material.displacementMap,\n\t\t\troughnessMap: !! material.roughnessMap,\n\t\t\tmetalnessMap: !! material.metalnessMap,\n\t\t\tspecularMap: !! material.specularMap,\n\t\t\talphaMap: !! material.alphaMap,\n\n\t\t\tgradientMap: !! material.gradientMap,\n\n\t\t\tsheen: !! material.sheen,\n\n\t\t\ttransmissionMap: !! material.transmissionMap,\n\n\t\t\tcombine: material.combine,\n\n\t\t\tvertexTangents: ( material.normalMap && material.vertexTangents ),\n\t\t\tvertexColors: material.vertexColors,\n\t\t\tvertexUvs: !! material.map || !! material.bumpMap || !! material.normalMap || !! material.specularMap || !! material.alphaMap || !! material.emissiveMap || !! material.roughnessMap || !! material.metalnessMap || !! material.clearcoatMap || !! material.clearcoatRoughnessMap || !! material.clearcoatNormalMap || !! material.displacementMap || !! material.transmissionMap,\n\t\t\tuvsVertexOnly: ! ( !! material.map || !! material.bumpMap || !! material.normalMap || !! material.specularMap || !! material.alphaMap || !! material.emissiveMap || !! material.roughnessMap || !! material.metalnessMap || !! material.clearcoatNormalMap || !! material.transmissionMap ) && !! material.displacementMap,\n\n\t\t\tfog: !! fog,\n\t\t\tuseFog: material.fog,\n\t\t\tfogExp2: ( fog && fog.isFogExp2 ),\n\n\t\t\tflatShading: material.flatShading,\n\n\t\t\tsizeAttenuation: material.sizeAttenuation,\n\t\t\tlogarithmicDepthBuffer: logarithmicDepthBuffer,\n\n\t\t\tskinning: material.skinning && maxBones > 0,\n\t\t\tmaxBones: maxBones,\n\t\t\tuseVertexTexture: floatVertexTextures,\n\n\t\t\tmorphTargets: material.morphTargets,\n\t\t\tmorphNormals: material.morphNormals,\n\t\t\tmaxMorphTargets: renderer.maxMorphTargets,\n\t\t\tmaxMorphNormals: renderer.maxMorphNormals,\n\n\t\t\tnumDirLights: lights.directional.length,\n\t\t\tnumPointLights: lights.point.length,\n\t\t\tnumSpotLights: lights.spot.length,\n\t\t\tnumRectAreaLights: lights.rectArea.length,\n\t\t\tnumHemiLights: lights.hemi.length,\n\n\t\t\tnumDirLightShadows: lights.directionalShadowMap.length,\n\t\t\tnumPointLightShadows: lights.pointShadowMap.length,\n\t\t\tnumSpotLightShadows: lights.spotShadowMap.length,\n\n\t\t\tnumClippingPlanes: clipping.numPlanes,\n\t\t\tnumClipIntersection: clipping.numIntersection,\n\n\t\t\tdithering: material.dithering,\n\n\t\t\tshadowMapEnabled: renderer.shadowMap.enabled && shadows.length > 0,\n\t\t\tshadowMapType: renderer.shadowMap.type,\n\n\t\t\ttoneMapping: material.toneMapped ? renderer.toneMapping : NoToneMapping,\n\t\t\tphysicallyCorrectLights: renderer.physicallyCorrectLights,\n\n\t\t\tpremultipliedAlpha: material.premultipliedAlpha,\n\n\t\t\talphaTest: material.alphaTest,\n\t\t\tdoubleSided: material.side === DoubleSide,\n\t\t\tflipSided: material.side === BackSide,\n\n\t\t\tdepthPacking: ( material.depthPacking !== undefined ) ? material.depthPacking : false,\n\n\t\t\tindex0AttributeName: material.index0AttributeName,\n\n\t\t\textensionDerivatives: material.extensions && material.extensions.derivatives,\n\t\t\textensionFragDepth: material.extensions && material.extensions.fragDepth,\n\t\t\textensionDrawBuffers: material.extensions && material.extensions.drawBuffers,\n\t\t\textensionShaderTextureLOD: material.extensions && material.extensions.shaderTextureLOD,\n\n\t\t\trendererExtensionFragDepth: isWebGL2 || extensions.has( 'EXT_frag_depth' ),\n\t\t\trendererExtensionDrawBuffers: isWebGL2 || extensions.has( 'WEBGL_draw_buffers' ),\n\t\t\trendererExtensionShaderTextureLod: isWebGL2 || extensions.has( 'EXT_shader_texture_lod' ),\n\n\t\t\tcustomProgramCacheKey: material.customProgramCacheKey()\n\n\t\t};\n\n\t\treturn parameters;\n\n\t}\n\n\tfunction getProgramCacheKey( parameters ) {\n\n\t\tconst array = [];\n\n\t\tif ( parameters.shaderID ) {\n\n\t\t\tarray.push( parameters.shaderID );\n\n\t\t} else {\n\n\t\t\tarray.push( parameters.fragmentShader );\n\t\t\tarray.push( parameters.vertexShader );\n\n\t\t}\n\n\t\tif ( parameters.defines !== undefined ) {\n\n\t\t\tfor ( const name in parameters.defines ) {\n\n\t\t\t\tarray.push( name );\n\t\t\t\tarray.push( parameters.defines[ name ] );\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( parameters.isRawShaderMaterial === false ) {\n\n\t\t\tfor ( let i = 0; i < parameterNames.length; i ++ ) {\n\n\t\t\t\tarray.push( parameters[ parameterNames[ i ] ] );\n\n\t\t\t}\n\n\t\t\tarray.push( renderer.outputEncoding );\n\t\t\tarray.push( renderer.gammaFactor );\n\n\t\t}\n\n\t\tarray.push( parameters.customProgramCacheKey );\n\n\t\treturn array.join();\n\n\t}\n\n\tfunction getUniforms( material ) {\n\n\t\tconst shaderID = shaderIDs[ material.type ];\n\t\tlet uniforms;\n\n\t\tif ( shaderID ) {\n\n\t\t\tconst shader = ShaderLib[ shaderID ];\n\t\t\tuniforms = UniformsUtils.clone( shader.uniforms );\n\n\t\t} else {\n\n\t\t\tuniforms = material.uniforms;\n\n\t\t}\n\n\t\treturn uniforms;\n\n\t}\n\n\tfunction acquireProgram( parameters, cacheKey ) {\n\n\t\tlet program;\n\n\t\t// Check if code has been already compiled\n\t\tfor ( let p = 0, pl = programs.length; p < pl; p ++ ) {\n\n\t\t\tconst preexistingProgram = programs[ p ];\n\n\t\t\tif ( preexistingProgram.cacheKey === cacheKey ) {\n\n\t\t\t\tprogram = preexistingProgram;\n\t\t\t\t++ program.usedTimes;\n\n\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( program === undefined ) {\n\n\t\t\tprogram = new WebGLProgram( renderer, cacheKey, parameters, bindingStates );\n\t\t\tprograms.push( program );\n\n\t\t}\n\n\t\treturn program;\n\n\t}\n\n\tfunction releaseProgram( program ) {\n\n\t\tif ( -- program.usedTimes === 0 ) {\n\n\t\t\t// Remove from unordered set\n\t\t\tconst i = programs.indexOf( program );\n\t\t\tprograms[ i ] = programs[ programs.length - 1 ];\n\t\t\tprograms.pop();\n\n\t\t\t// Free WebGL resources\n\t\t\tprogram.destroy();\n\n\t\t}\n\n\t}\n\n\treturn {\n\t\tgetParameters: getParameters,\n\t\tgetProgramCacheKey: getProgramCacheKey,\n\t\tgetUniforms: getUniforms,\n\t\tacquireProgram: acquireProgram,\n\t\treleaseProgram: releaseProgram,\n\t\t// Exposed for resource monitoring & error feedback via renderer.info:\n\t\tprograms: programs\n\t};\n\n}\n\nfunction WebGLProperties() {\n\n\tlet properties = new WeakMap();\n\n\tfunction get( object ) {\n\n\t\tlet map = properties.get( object );\n\n\t\tif ( map === undefined ) {\n\n\t\t\tmap = {};\n\t\t\tproperties.set( object, map );\n\n\t\t}\n\n\t\treturn map;\n\n\t}\n\n\tfunction remove( object ) {\n\n\t\tproperties.delete( object );\n\n\t}\n\n\tfunction update( object, key, value ) {\n\n\t\tproperties.get( object )[ key ] = value;\n\n\t}\n\n\tfunction dispose() {\n\n\t\tproperties = new WeakMap();\n\n\t}\n\n\treturn {\n\t\tget: get,\n\t\tremove: remove,\n\t\tupdate: update,\n\t\tdispose: dispose\n\t};\n\n}\n\nfunction painterSortStable( a, b ) {\n\n\tif ( a.groupOrder !== b.groupOrder ) {\n\n\t\treturn a.groupOrder - b.groupOrder;\n\n\t} else if ( a.renderOrder !== b.renderOrder ) {\n\n\t\treturn a.renderOrder - b.renderOrder;\n\n\t} else if ( a.program !== b.program ) {\n\n\t\treturn a.program.id - b.program.id;\n\n\t} else if ( a.material.id !== b.material.id ) {\n\n\t\treturn a.material.id - b.material.id;\n\n\t} else if ( a.z !== b.z ) {\n\n\t\treturn a.z - b.z;\n\n\t} else {\n\n\t\treturn a.id - b.id;\n\n\t}\n\n}\n\nfunction reversePainterSortStable( a, b ) {\n\n\tif ( a.groupOrder !== b.groupOrder ) {\n\n\t\treturn a.groupOrder - b.groupOrder;\n\n\t} else if ( a.renderOrder !== b.renderOrder ) {\n\n\t\treturn a.renderOrder - b.renderOrder;\n\n\t} else if ( a.z !== b.z ) {\n\n\t\treturn b.z - a.z;\n\n\t} else {\n\n\t\treturn a.id - b.id;\n\n\t}\n\n}\n\n\nfunction WebGLRenderList( properties ) {\n\n\tconst renderItems = [];\n\tlet renderItemsIndex = 0;\n\n\tconst opaque = [];\n\tconst transparent = [];\n\n\tconst defaultProgram = { id: - 1 };\n\n\tfunction init() {\n\n\t\trenderItemsIndex = 0;\n\n\t\topaque.length = 0;\n\t\ttransparent.length = 0;\n\n\t}\n\n\tfunction getNextRenderItem( object, geometry, material, groupOrder, z, group ) {\n\n\t\tlet renderItem = renderItems[ renderItemsIndex ];\n\t\tconst materialProperties = properties.get( material );\n\n\t\tif ( renderItem === undefined ) {\n\n\t\t\trenderItem = {\n\t\t\t\tid: object.id,\n\t\t\t\tobject: object,\n\t\t\t\tgeometry: geometry,\n\t\t\t\tmaterial: material,\n\t\t\t\tprogram: materialProperties.program || defaultProgram,\n\t\t\t\tgroupOrder: groupOrder,\n\t\t\t\trenderOrder: object.renderOrder,\n\t\t\t\tz: z,\n\t\t\t\tgroup: group\n\t\t\t};\n\n\t\t\trenderItems[ renderItemsIndex ] = renderItem;\n\n\t\t} else {\n\n\t\t\trenderItem.id = object.id;\n\t\t\trenderItem.object = object;\n\t\t\trenderItem.geometry = geometry;\n\t\t\trenderItem.material = material;\n\t\t\trenderItem.program = materialProperties.program || defaultProgram;\n\t\t\trenderItem.groupOrder = groupOrder;\n\t\t\trenderItem.renderOrder = object.renderOrder;\n\t\t\trenderItem.z = z;\n\t\t\trenderItem.group = group;\n\n\t\t}\n\n\t\trenderItemsIndex ++;\n\n\t\treturn renderItem;\n\n\t}\n\n\tfunction push( object, geometry, material, groupOrder, z, group ) {\n\n\t\tconst renderItem = getNextRenderItem( object, geometry, material, groupOrder, z, group );\n\n\t\t( material.transparent === true ? transparent : opaque ).push( renderItem );\n\n\t}\n\n\tfunction unshift( object, geometry, material, groupOrder, z, group ) {\n\n\t\tconst renderItem = getNextRenderItem( object, geometry, material, groupOrder, z, group );\n\n\t\t( material.transparent === true ? transparent : opaque ).unshift( renderItem );\n\n\t}\n\n\tfunction sort( customOpaqueSort, customTransparentSort ) {\n\n\t\tif ( opaque.length > 1 ) opaque.sort( customOpaqueSort || painterSortStable );\n\t\tif ( transparent.length > 1 ) transparent.sort( customTransparentSort || reversePainterSortStable );\n\n\t}\n\n\tfunction finish() {\n\n\t\t// Clear references from inactive renderItems in the list\n\n\t\tfor ( let i = renderItemsIndex, il = renderItems.length; i < il; i ++ ) {\n\n\t\t\tconst renderItem = renderItems[ i ];\n\n\t\t\tif ( renderItem.id === null ) break;\n\n\t\t\trenderItem.id = null;\n\t\t\trenderItem.object = null;\n\t\t\trenderItem.geometry = null;\n\t\t\trenderItem.material = null;\n\t\t\trenderItem.program = null;\n\t\t\trenderItem.group = null;\n\n\t\t}\n\n\t}\n\n\treturn {\n\n\t\topaque: opaque,\n\t\ttransparent: transparent,\n\n\t\tinit: init,\n\t\tpush: push,\n\t\tunshift: unshift,\n\t\tfinish: finish,\n\n\t\tsort: sort\n\t};\n\n}\n\nfunction WebGLRenderLists( properties ) {\n\n\tlet lists = new WeakMap();\n\n\tfunction get( scene, camera ) {\n\n\t\tconst cameras = lists.get( scene );\n\t\tlet list;\n\n\t\tif ( cameras === undefined ) {\n\n\t\t\tlist = new WebGLRenderList( properties );\n\t\t\tlists.set( scene, new WeakMap() );\n\t\t\tlists.get( scene ).set( camera, list );\n\n\t\t} else {\n\n\t\t\tlist = cameras.get( camera );\n\t\t\tif ( list === undefined ) {\n\n\t\t\t\tlist = new WebGLRenderList( properties );\n\t\t\t\tcameras.set( camera, list );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn list;\n\n\t}\n\n\tfunction dispose() {\n\n\t\tlists = new WeakMap();\n\n\t}\n\n\treturn {\n\t\tget: get,\n\t\tdispose: dispose\n\t};\n\n}\n\nfunction UniformsCache() {\n\n\tconst lights = {};\n\n\treturn {\n\n\t\tget: function ( light ) {\n\n\t\t\tif ( lights[ light.id ] !== undefined ) {\n\n\t\t\t\treturn lights[ light.id ];\n\n\t\t\t}\n\n\t\t\tlet uniforms;\n\n\t\t\tswitch ( light.type ) {\n\n\t\t\t\tcase 'DirectionalLight':\n\t\t\t\t\tuniforms = {\n\t\t\t\t\t\tdirection: new Vector3(),\n\t\t\t\t\t\tcolor: new Color()\n\t\t\t\t\t};\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'SpotLight':\n\t\t\t\t\tuniforms = {\n\t\t\t\t\t\tposition: new Vector3(),\n\t\t\t\t\t\tdirection: new Vector3(),\n\t\t\t\t\t\tcolor: new Color(),\n\t\t\t\t\t\tdistance: 0,\n\t\t\t\t\t\tconeCos: 0,\n\t\t\t\t\t\tpenumbraCos: 0,\n\t\t\t\t\t\tdecay: 0\n\t\t\t\t\t};\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'PointLight':\n\t\t\t\t\tuniforms = {\n\t\t\t\t\t\tposition: new Vector3(),\n\t\t\t\t\t\tcolor: new Color(),\n\t\t\t\t\t\tdistance: 0,\n\t\t\t\t\t\tdecay: 0\n\t\t\t\t\t};\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'HemisphereLight':\n\t\t\t\t\tuniforms = {\n\t\t\t\t\t\tdirection: new Vector3(),\n\t\t\t\t\t\tskyColor: new Color(),\n\t\t\t\t\t\tgroundColor: new Color()\n\t\t\t\t\t};\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'RectAreaLight':\n\t\t\t\t\tuniforms = {\n\t\t\t\t\t\tcolor: new Color(),\n\t\t\t\t\t\tposition: new Vector3(),\n\t\t\t\t\t\thalfWidth: new Vector3(),\n\t\t\t\t\t\thalfHeight: new Vector3()\n\t\t\t\t\t};\n\t\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t\tlights[ light.id ] = uniforms;\n\n\t\t\treturn uniforms;\n\n\t\t}\n\n\t};\n\n}\n\nfunction ShadowUniformsCache() {\n\n\tconst lights = {};\n\n\treturn {\n\n\t\tget: function ( light ) {\n\n\t\t\tif ( lights[ light.id ] !== undefined ) {\n\n\t\t\t\treturn lights[ light.id ];\n\n\t\t\t}\n\n\t\t\tlet uniforms;\n\n\t\t\tswitch ( light.type ) {\n\n\t\t\t\tcase 'DirectionalLight':\n\t\t\t\t\tuniforms = {\n\t\t\t\t\t\tshadowBias: 0,\n\t\t\t\t\t\tshadowNormalBias: 0,\n\t\t\t\t\t\tshadowRadius: 1,\n\t\t\t\t\t\tshadowMapSize: new Vector2()\n\t\t\t\t\t};\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'SpotLight':\n\t\t\t\t\tuniforms = {\n\t\t\t\t\t\tshadowBias: 0,\n\t\t\t\t\t\tshadowNormalBias: 0,\n\t\t\t\t\t\tshadowRadius: 1,\n\t\t\t\t\t\tshadowMapSize: new Vector2()\n\t\t\t\t\t};\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'PointLight':\n\t\t\t\t\tuniforms = {\n\t\t\t\t\t\tshadowBias: 0,\n\t\t\t\t\t\tshadowNormalBias: 0,\n\t\t\t\t\t\tshadowRadius: 1,\n\t\t\t\t\t\tshadowMapSize: new Vector2(),\n\t\t\t\t\t\tshadowCameraNear: 1,\n\t\t\t\t\t\tshadowCameraFar: 1000\n\t\t\t\t\t};\n\t\t\t\t\tbreak;\n\n\t\t\t\t// TODO (abelnation): set RectAreaLight shadow uniforms\n\n\t\t\t}\n\n\t\t\tlights[ light.id ] = uniforms;\n\n\t\t\treturn uniforms;\n\n\t\t}\n\n\t};\n\n}\n\n\n\nlet nextVersion = 0;\n\nfunction shadowCastingLightsFirst( lightA, lightB ) {\n\n\treturn ( lightB.castShadow ? 1 : 0 ) - ( lightA.castShadow ? 1 : 0 );\n\n}\n\nfunction WebGLLights( extensions, capabilities ) {\n\n\tconst cache = new UniformsCache();\n\n\tconst shadowCache = ShadowUniformsCache();\n\n\tconst state = {\n\n\t\tversion: 0,\n\n\t\thash: {\n\t\t\tdirectionalLength: - 1,\n\t\t\tpointLength: - 1,\n\t\t\tspotLength: - 1,\n\t\t\trectAreaLength: - 1,\n\t\t\themiLength: - 1,\n\n\t\t\tnumDirectionalShadows: - 1,\n\t\t\tnumPointShadows: - 1,\n\t\t\tnumSpotShadows: - 1\n\t\t},\n\n\t\tambient: [ 0, 0, 0 ],\n\t\tprobe: [],\n\t\tdirectional: [],\n\t\tdirectionalShadow: [],\n\t\tdirectionalShadowMap: [],\n\t\tdirectionalShadowMatrix: [],\n\t\tspot: [],\n\t\tspotShadow: [],\n\t\tspotShadowMap: [],\n\t\tspotShadowMatrix: [],\n\t\trectArea: [],\n\t\trectAreaLTC1: null,\n\t\trectAreaLTC2: null,\n\t\tpoint: [],\n\t\tpointShadow: [],\n\t\tpointShadowMap: [],\n\t\tpointShadowMatrix: [],\n\t\themi: []\n\n\t};\n\n\tfor ( let i = 0; i < 9; i ++ ) state.probe.push( new Vector3() );\n\n\tconst vector3 = new Vector3();\n\tconst matrix4 = new Matrix4();\n\tconst matrix42 = new Matrix4();\n\n\tfunction setup( lights ) {\n\n\t\tlet r = 0, g = 0, b = 0;\n\n\t\tfor ( let i = 0; i < 9; i ++ ) state.probe[ i ].set( 0, 0, 0 );\n\n\t\tlet directionalLength = 0;\n\t\tlet pointLength = 0;\n\t\tlet spotLength = 0;\n\t\tlet rectAreaLength = 0;\n\t\tlet hemiLength = 0;\n\n\t\tlet numDirectionalShadows = 0;\n\t\tlet numPointShadows = 0;\n\t\tlet numSpotShadows = 0;\n\n\t\tlights.sort( shadowCastingLightsFirst );\n\n\t\tfor ( let i = 0, l = lights.length; i < l; i ++ ) {\n\n\t\t\tconst light = lights[ i ];\n\n\t\t\tconst color = light.color;\n\t\t\tconst intensity = light.intensity;\n\t\t\tconst distance = light.distance;\n\n\t\t\tconst shadowMap = ( light.shadow && light.shadow.map ) ? light.shadow.map.texture : null;\n\n\t\t\tif ( light.isAmbientLight ) {\n\n\t\t\t\tr += color.r * intensity;\n\t\t\t\tg += color.g * intensity;\n\t\t\t\tb += color.b * intensity;\n\n\t\t\t} else if ( light.isLightProbe ) {\n\n\t\t\t\tfor ( let j = 0; j < 9; j ++ ) {\n\n\t\t\t\t\tstate.probe[ j ].addScaledVector( light.sh.coefficients[ j ], intensity );\n\n\t\t\t\t}\n\n\t\t\t} else if ( light.isDirectionalLight ) {\n\n\t\t\t\tconst uniforms = cache.get( light );\n\n\t\t\t\tuniforms.color.copy( light.color ).multiplyScalar( light.intensity );\n\n\t\t\t\tif ( light.castShadow ) {\n\n\t\t\t\t\tconst shadow = light.shadow;\n\n\t\t\t\t\tconst shadowUniforms = shadowCache.get( light );\n\n\t\t\t\t\tshadowUniforms.shadowBias = shadow.bias;\n\t\t\t\t\tshadowUniforms.shadowNormalBias = shadow.normalBias;\n\t\t\t\t\tshadowUniforms.shadowRadius = shadow.radius;\n\t\t\t\t\tshadowUniforms.shadowMapSize = shadow.mapSize;\n\n\t\t\t\t\tstate.directionalShadow[ directionalLength ] = shadowUniforms;\n\t\t\t\t\tstate.directionalShadowMap[ directionalLength ] = shadowMap;\n\t\t\t\t\tstate.directionalShadowMatrix[ directionalLength ] = light.shadow.matrix;\n\n\t\t\t\t\tnumDirectionalShadows ++;\n\n\t\t\t\t}\n\n\t\t\t\tstate.directional[ directionalLength ] = uniforms;\n\n\t\t\t\tdirectionalLength ++;\n\n\t\t\t} else if ( light.isSpotLight ) {\n\n\t\t\t\tconst uniforms = cache.get( light );\n\n\t\t\t\tuniforms.position.setFromMatrixPosition( light.matrixWorld );\n\n\t\t\t\tuniforms.color.copy( color ).multiplyScalar( intensity );\n\t\t\t\tuniforms.distance = distance;\n\n\t\t\t\tuniforms.coneCos = Math.cos( light.angle );\n\t\t\t\tuniforms.penumbraCos = Math.cos( light.angle * ( 1 - light.penumbra ) );\n\t\t\t\tuniforms.decay = light.decay;\n\n\t\t\t\tif ( light.castShadow ) {\n\n\t\t\t\t\tconst shadow = light.shadow;\n\n\t\t\t\t\tconst shadowUniforms = shadowCache.get( light );\n\n\t\t\t\t\tshadowUniforms.shadowBias = shadow.bias;\n\t\t\t\t\tshadowUniforms.shadowNormalBias = shadow.normalBias;\n\t\t\t\t\tshadowUniforms.shadowRadius = shadow.radius;\n\t\t\t\t\tshadowUniforms.shadowMapSize = shadow.mapSize;\n\n\t\t\t\t\tstate.spotShadow[ spotLength ] = shadowUniforms;\n\t\t\t\t\tstate.spotShadowMap[ spotLength ] = shadowMap;\n\t\t\t\t\tstate.spotShadowMatrix[ spotLength ] = light.shadow.matrix;\n\n\t\t\t\t\tnumSpotShadows ++;\n\n\t\t\t\t}\n\n\t\t\t\tstate.spot[ spotLength ] = uniforms;\n\n\t\t\t\tspotLength ++;\n\n\t\t\t} else if ( light.isRectAreaLight ) {\n\n\t\t\t\tconst uniforms = cache.get( light );\n\n\t\t\t\t// (a) intensity is the total visible light emitted\n\t\t\t\t//uniforms.color.copy( color ).multiplyScalar( intensity / ( light.width * light.height * Math.PI ) );\n\n\t\t\t\t// (b) intensity is the brightness of the light\n\t\t\t\tuniforms.color.copy( color ).multiplyScalar( intensity );\n\n\t\t\t\tuniforms.halfWidth.set( light.width * 0.5, 0.0, 0.0 );\n\t\t\t\tuniforms.halfHeight.set( 0.0, light.height * 0.5, 0.0 );\n\n\t\t\t\tstate.rectArea[ rectAreaLength ] = uniforms;\n\n\t\t\t\trectAreaLength ++;\n\n\t\t\t} else if ( light.isPointLight ) {\n\n\t\t\t\tconst uniforms = cache.get( light );\n\n\t\t\t\tuniforms.color.copy( light.color ).multiplyScalar( light.intensity );\n\t\t\t\tuniforms.distance = light.distance;\n\t\t\t\tuniforms.decay = light.decay;\n\n\t\t\t\tif ( light.castShadow ) {\n\n\t\t\t\t\tconst shadow = light.shadow;\n\n\t\t\t\t\tconst shadowUniforms = shadowCache.get( light );\n\n\t\t\t\t\tshadowUniforms.shadowBias = shadow.bias;\n\t\t\t\t\tshadowUniforms.shadowNormalBias = shadow.normalBias;\n\t\t\t\t\tshadowUniforms.shadowRadius = shadow.radius;\n\t\t\t\t\tshadowUniforms.shadowMapSize = shadow.mapSize;\n\t\t\t\t\tshadowUniforms.shadowCameraNear = shadow.camera.near;\n\t\t\t\t\tshadowUniforms.shadowCameraFar = shadow.camera.far;\n\n\t\t\t\t\tstate.pointShadow[ pointLength ] = shadowUniforms;\n\t\t\t\t\tstate.pointShadowMap[ pointLength ] = shadowMap;\n\t\t\t\t\tstate.pointShadowMatrix[ pointLength ] = light.shadow.matrix;\n\n\t\t\t\t\tnumPointShadows ++;\n\n\t\t\t\t}\n\n\t\t\t\tstate.point[ pointLength ] = uniforms;\n\n\t\t\t\tpointLength ++;\n\n\t\t\t} else if ( light.isHemisphereLight ) {\n\n\t\t\t\tconst uniforms = cache.get( light );\n\n\t\t\t\tuniforms.skyColor.copy( light.color ).multiplyScalar( intensity );\n\t\t\t\tuniforms.groundColor.copy( light.groundColor ).multiplyScalar( intensity );\n\n\t\t\t\tstate.hemi[ hemiLength ] = uniforms;\n\n\t\t\t\themiLength ++;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( rectAreaLength > 0 ) {\n\n\t\t\tif ( capabilities.isWebGL2 ) {\n\n\t\t\t\t// WebGL 2\n\n\t\t\t\tstate.rectAreaLTC1 = UniformsLib.LTC_FLOAT_1;\n\t\t\t\tstate.rectAreaLTC2 = UniformsLib.LTC_FLOAT_2;\n\n\t\t\t} else {\n\n\t\t\t\t// WebGL 1\n\n\t\t\t\tif ( extensions.has( 'OES_texture_float_linear' ) === true ) {\n\n\t\t\t\t\tstate.rectAreaLTC1 = UniformsLib.LTC_FLOAT_1;\n\t\t\t\t\tstate.rectAreaLTC2 = UniformsLib.LTC_FLOAT_2;\n\n\t\t\t\t} else if ( extensions.has( 'OES_texture_half_float_linear' ) === true ) {\n\n\t\t\t\t\tstate.rectAreaLTC1 = UniformsLib.LTC_HALF_1;\n\t\t\t\t\tstate.rectAreaLTC2 = UniformsLib.LTC_HALF_2;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.error( 'THREE.WebGLRenderer: Unable to use RectAreaLight. Missing WebGL extensions.' );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tstate.ambient[ 0 ] = r;\n\t\tstate.ambient[ 1 ] = g;\n\t\tstate.ambient[ 2 ] = b;\n\n\t\tconst hash = state.hash;\n\n\t\tif ( hash.directionalLength !== directionalLength ||\n\t\t\thash.pointLength !== pointLength ||\n\t\t\thash.spotLength !== spotLength ||\n\t\t\thash.rectAreaLength !== rectAreaLength ||\n\t\t\thash.hemiLength !== hemiLength ||\n\t\t\thash.numDirectionalShadows !== numDirectionalShadows ||\n\t\t\thash.numPointShadows !== numPointShadows ||\n\t\t\thash.numSpotShadows !== numSpotShadows ) {\n\n\t\t\tstate.directional.length = directionalLength;\n\t\t\tstate.spot.length = spotLength;\n\t\t\tstate.rectArea.length = rectAreaLength;\n\t\t\tstate.point.length = pointLength;\n\t\t\tstate.hemi.length = hemiLength;\n\n\t\t\tstate.directionalShadow.length = numDirectionalShadows;\n\t\t\tstate.directionalShadowMap.length = numDirectionalShadows;\n\t\t\tstate.pointShadow.length = numPointShadows;\n\t\t\tstate.pointShadowMap.length = numPointShadows;\n\t\t\tstate.spotShadow.length = numSpotShadows;\n\t\t\tstate.spotShadowMap.length = numSpotShadows;\n\t\t\tstate.directionalShadowMatrix.length = numDirectionalShadows;\n\t\t\tstate.pointShadowMatrix.length = numPointShadows;\n\t\t\tstate.spotShadowMatrix.length = numSpotShadows;\n\n\t\t\thash.directionalLength = directionalLength;\n\t\t\thash.pointLength = pointLength;\n\t\t\thash.spotLength = spotLength;\n\t\t\thash.rectAreaLength = rectAreaLength;\n\t\t\thash.hemiLength = hemiLength;\n\n\t\t\thash.numDirectionalShadows = numDirectionalShadows;\n\t\t\thash.numPointShadows = numPointShadows;\n\t\t\thash.numSpotShadows = numSpotShadows;\n\n\t\t\tstate.version = nextVersion ++;\n\n\t\t}\n\n\t}\n\n\tfunction setupView( lights, camera ) {\n\n\t\tlet directionalLength = 0;\n\t\tlet pointLength = 0;\n\t\tlet spotLength = 0;\n\t\tlet rectAreaLength = 0;\n\t\tlet hemiLength = 0;\n\n\t\tconst viewMatrix = camera.matrixWorldInverse;\n\n\t\tfor ( let i = 0, l = lights.length; i < l; i ++ ) {\n\n\t\t\tconst light = lights[ i ];\n\n\t\t\tif ( light.isDirectionalLight ) {\n\n\t\t\t\tconst uniforms = state.directional[ directionalLength ];\n\n\t\t\t\tuniforms.direction.setFromMatrixPosition( light.matrixWorld );\n\t\t\t\tvector3.setFromMatrixPosition( light.target.matrixWorld );\n\t\t\t\tuniforms.direction.sub( vector3 );\n\t\t\t\tuniforms.direction.transformDirection( viewMatrix );\n\n\t\t\t\tdirectionalLength ++;\n\n\t\t\t} else if ( light.isSpotLight ) {\n\n\t\t\t\tconst uniforms = state.spot[ spotLength ];\n\n\t\t\t\tuniforms.position.setFromMatrixPosition( light.matrixWorld );\n\t\t\t\tuniforms.position.applyMatrix4( viewMatrix );\n\n\t\t\t\tuniforms.direction.setFromMatrixPosition( light.matrixWorld );\n\t\t\t\tvector3.setFromMatrixPosition( light.target.matrixWorld );\n\t\t\t\tuniforms.direction.sub( vector3 );\n\t\t\t\tuniforms.direction.transformDirection( viewMatrix );\n\n\t\t\t\tspotLength ++;\n\n\t\t\t} else if ( light.isRectAreaLight ) {\n\n\t\t\t\tconst uniforms = state.rectArea[ rectAreaLength ];\n\n\t\t\t\tuniforms.position.setFromMatrixPosition( light.matrixWorld );\n\t\t\t\tuniforms.position.applyMatrix4( viewMatrix );\n\n\t\t\t\t// extract local rotation of light to derive width/height half vectors\n\t\t\t\tmatrix42.identity();\n\t\t\t\tmatrix4.copy( light.matrixWorld );\n\t\t\t\tmatrix4.premultiply( viewMatrix );\n\t\t\t\tmatrix42.extractRotation( matrix4 );\n\n\t\t\t\tuniforms.halfWidth.set( light.width * 0.5, 0.0, 0.0 );\n\t\t\t\tuniforms.halfHeight.set( 0.0, light.height * 0.5, 0.0 );\n\n\t\t\t\tuniforms.halfWidth.applyMatrix4( matrix42 );\n\t\t\t\tuniforms.halfHeight.applyMatrix4( matrix42 );\n\n\t\t\t\trectAreaLength ++;\n\n\t\t\t} else if ( light.isPointLight ) {\n\n\t\t\t\tconst uniforms = state.point[ pointLength ];\n\n\t\t\t\tuniforms.position.setFromMatrixPosition( light.matrixWorld );\n\t\t\t\tuniforms.position.applyMatrix4( viewMatrix );\n\n\t\t\t\tpointLength ++;\n\n\t\t\t} else if ( light.isHemisphereLight ) {\n\n\t\t\t\tconst uniforms = state.hemi[ hemiLength ];\n\n\t\t\t\tuniforms.direction.setFromMatrixPosition( light.matrixWorld );\n\t\t\t\tuniforms.direction.transformDirection( viewMatrix );\n\t\t\t\tuniforms.direction.normalize();\n\n\t\t\t\themiLength ++;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\treturn {\n\t\tsetup: setup,\n\t\tsetupView: setupView,\n\t\tstate: state\n\t};\n\n}\n\nfunction WebGLRenderState( extensions, capabilities ) {\n\n\tconst lights = new WebGLLights( extensions, capabilities );\n\n\tconst lightsArray = [];\n\tconst shadowsArray = [];\n\n\tfunction init() {\n\n\t\tlightsArray.length = 0;\n\t\tshadowsArray.length = 0;\n\n\t}\n\n\tfunction pushLight( light ) {\n\n\t\tlightsArray.push( light );\n\n\t}\n\n\tfunction pushShadow( shadowLight ) {\n\n\t\tshadowsArray.push( shadowLight );\n\n\t}\n\n\tfunction setupLights() {\n\n\t\tlights.setup( lightsArray );\n\n\t}\n\n\tfunction setupLightsView( camera ) {\n\n\t\tlights.setupView( lightsArray, camera );\n\n\t}\n\n\tconst state = {\n\t\tlightsArray: lightsArray,\n\t\tshadowsArray: shadowsArray,\n\n\t\tlights: lights\n\t};\n\n\treturn {\n\t\tinit: init,\n\t\tstate: state,\n\t\tsetupLights: setupLights,\n\t\tsetupLightsView: setupLightsView,\n\n\t\tpushLight: pushLight,\n\t\tpushShadow: pushShadow\n\t};\n\n}\n\nfunction WebGLRenderStates( extensions, capabilities ) {\n\n\tlet renderStates = new WeakMap();\n\n\tfunction get( scene, renderCallDepth = 0 ) {\n\n\t\tlet renderState;\n\n\t\tif ( renderStates.has( scene ) === false ) {\n\n\t\t\trenderState = new WebGLRenderState( extensions, capabilities );\n\t\t\trenderStates.set( scene, [] );\n\t\t\trenderStates.get( scene ).push( renderState );\n\n\t\t} else {\n\n\t\t\tif ( renderCallDepth >= renderStates.get( scene ).length ) {\n\n\t\t\t\trenderState = new WebGLRenderState( extensions, capabilities );\n\t\t\t\trenderStates.get( scene ).push( renderState );\n\n\t\t\t} else {\n\n\t\t\t\trenderState = renderStates.get( scene )[ renderCallDepth ];\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn renderState;\n\n\t}\n\n\tfunction dispose() {\n\n\t\trenderStates = new WeakMap();\n\n\t}\n\n\treturn {\n\t\tget: get,\n\t\tdispose: dispose\n\t};\n\n}\n\n/**\n * parameters = {\n *\n *  opacity: <float>,\n *\n *  map: new THREE.Texture( <Image> ),\n *\n *  alphaMap: new THREE.Texture( <Image> ),\n *\n *  displacementMap: new THREE.Texture( <Image> ),\n *  displacementScale: <float>,\n *  displacementBias: <float>,\n *\n *  wireframe: <boolean>,\n *  wireframeLinewidth: <float>\n * }\n */\n\nfunction MeshDepthMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.type = 'MeshDepthMaterial';\n\n\tthis.depthPacking = BasicDepthPacking;\n\n\tthis.skinning = false;\n\tthis.morphTargets = false;\n\n\tthis.map = null;\n\n\tthis.alphaMap = null;\n\n\tthis.displacementMap = null;\n\tthis.displacementScale = 1;\n\tthis.displacementBias = 0;\n\n\tthis.wireframe = false;\n\tthis.wireframeLinewidth = 1;\n\n\tthis.fog = false;\n\n\tthis.setValues( parameters );\n\n}\n\nMeshDepthMaterial.prototype = Object.create( Material.prototype );\nMeshDepthMaterial.prototype.constructor = MeshDepthMaterial;\n\nMeshDepthMaterial.prototype.isMeshDepthMaterial = true;\n\nMeshDepthMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.depthPacking = source.depthPacking;\n\n\tthis.skinning = source.skinning;\n\tthis.morphTargets = source.morphTargets;\n\n\tthis.map = source.map;\n\n\tthis.alphaMap = source.alphaMap;\n\n\tthis.displacementMap = source.displacementMap;\n\tthis.displacementScale = source.displacementScale;\n\tthis.displacementBias = source.displacementBias;\n\n\tthis.wireframe = source.wireframe;\n\tthis.wireframeLinewidth = source.wireframeLinewidth;\n\n\treturn this;\n\n};\n\n/**\n * parameters = {\n *\n *  referencePosition: <float>,\n *  nearDistance: <float>,\n *  farDistance: <float>,\n *\n *  skinning: <bool>,\n *  morphTargets: <bool>,\n *\n *  map: new THREE.Texture( <Image> ),\n *\n *  alphaMap: new THREE.Texture( <Image> ),\n *\n *  displacementMap: new THREE.Texture( <Image> ),\n *  displacementScale: <float>,\n *  displacementBias: <float>\n *\n * }\n */\n\nfunction MeshDistanceMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.type = 'MeshDistanceMaterial';\n\n\tthis.referencePosition = new Vector3();\n\tthis.nearDistance = 1;\n\tthis.farDistance = 1000;\n\n\tthis.skinning = false;\n\tthis.morphTargets = false;\n\n\tthis.map = null;\n\n\tthis.alphaMap = null;\n\n\tthis.displacementMap = null;\n\tthis.displacementScale = 1;\n\tthis.displacementBias = 0;\n\n\tthis.fog = false;\n\n\tthis.setValues( parameters );\n\n}\n\nMeshDistanceMaterial.prototype = Object.create( Material.prototype );\nMeshDistanceMaterial.prototype.constructor = MeshDistanceMaterial;\n\nMeshDistanceMaterial.prototype.isMeshDistanceMaterial = true;\n\nMeshDistanceMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.referencePosition.copy( source.referencePosition );\n\tthis.nearDistance = source.nearDistance;\n\tthis.farDistance = source.farDistance;\n\n\tthis.skinning = source.skinning;\n\tthis.morphTargets = source.morphTargets;\n\n\tthis.map = source.map;\n\n\tthis.alphaMap = source.alphaMap;\n\n\tthis.displacementMap = source.displacementMap;\n\tthis.displacementScale = source.displacementScale;\n\tthis.displacementBias = source.displacementBias;\n\n\treturn this;\n\n};\n\nvar vsm_frag = \"uniform sampler2D shadow_pass;\\nuniform vec2 resolution;\\nuniform float radius;\\n#include <packing>\\nvoid main() {\\n\\tfloat mean = 0.0;\\n\\tfloat squared_mean = 0.0;\\n\\tfloat depth = unpackRGBAToDepth( texture2D( shadow_pass, ( gl_FragCoord.xy ) / resolution ) );\\n\\tfor ( float i = -1.0; i < 1.0 ; i += SAMPLE_RATE) {\\n\\t\\t#ifdef HORIZONTAL_PASS\\n\\t\\t\\tvec2 distribution = unpackRGBATo2Half( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( i, 0.0 ) * radius ) / resolution ) );\\n\\t\\t\\tmean += distribution.x;\\n\\t\\t\\tsquared_mean += distribution.y * distribution.y + distribution.x * distribution.x;\\n\\t\\t#else\\n\\t\\t\\tfloat depth = unpackRGBAToDepth( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( 0.0, i ) * radius ) / resolution ) );\\n\\t\\t\\tmean += depth;\\n\\t\\t\\tsquared_mean += depth * depth;\\n\\t\\t#endif\\n\\t}\\n\\tmean = mean * HALF_SAMPLE_RATE;\\n\\tsquared_mean = squared_mean * HALF_SAMPLE_RATE;\\n\\tfloat std_dev = sqrt( squared_mean - mean * mean );\\n\\tgl_FragColor = pack2HalfToRGBA( vec2( mean, std_dev ) );\\n}\";\n\nvar vsm_vert = \"void main() {\\n\\tgl_Position = vec4( position, 1.0 );\\n}\";\n\nfunction WebGLShadowMap( _renderer, _objects, maxTextureSize ) {\n\n\tlet _frustum = new Frustum();\n\n\tconst _shadowMapSize = new Vector2(),\n\t\t_viewportSize = new Vector2(),\n\n\t\t_viewport = new Vector4(),\n\n\t\t_depthMaterials = [],\n\t\t_distanceMaterials = [],\n\n\t\t_materialCache = {};\n\n\tconst shadowSide = { 0: BackSide, 1: FrontSide, 2: DoubleSide };\n\n\tconst shadowMaterialVertical = new ShaderMaterial( {\n\n\t\tdefines: {\n\t\t\tSAMPLE_RATE: 2.0 / 8.0,\n\t\t\tHALF_SAMPLE_RATE: 1.0 / 8.0\n\t\t},\n\n\t\tuniforms: {\n\t\t\tshadow_pass: { value: null },\n\t\t\tresolution: { value: new Vector2() },\n\t\t\tradius: { value: 4.0 }\n\t\t},\n\n\t\tvertexShader: vsm_vert,\n\n\t\tfragmentShader: vsm_frag\n\n\t} );\n\n\tconst shadowMaterialHorizontal = shadowMaterialVertical.clone();\n\tshadowMaterialHorizontal.defines.HORIZONTAL_PASS = 1;\n\n\tconst fullScreenTri = new BufferGeometry();\n\tfullScreenTri.setAttribute(\n\t\t'position',\n\t\tnew BufferAttribute(\n\t\t\tnew Float32Array( [ - 1, - 1, 0.5, 3, - 1, 0.5, - 1, 3, 0.5 ] ),\n\t\t\t3\n\t\t)\n\t);\n\n\tconst fullScreenMesh = new Mesh( fullScreenTri, shadowMaterialVertical );\n\n\tconst scope = this;\n\n\tthis.enabled = false;\n\n\tthis.autoUpdate = true;\n\tthis.needsUpdate = false;\n\n\tthis.type = PCFShadowMap;\n\n\tthis.render = function ( lights, scene, camera ) {\n\n\t\tif ( scope.enabled === false ) return;\n\t\tif ( scope.autoUpdate === false && scope.needsUpdate === false ) return;\n\n\t\tif ( lights.length === 0 ) return;\n\n\t\tconst currentRenderTarget = _renderer.getRenderTarget();\n\t\tconst activeCubeFace = _renderer.getActiveCubeFace();\n\t\tconst activeMipmapLevel = _renderer.getActiveMipmapLevel();\n\n\t\tconst _state = _renderer.state;\n\n\t\t// Set GL state for depth map.\n\t\t_state.setBlending( NoBlending );\n\t\t_state.buffers.color.setClear( 1, 1, 1, 1 );\n\t\t_state.buffers.depth.setTest( true );\n\t\t_state.setScissorTest( false );\n\n\t\t// render depth map\n\n\t\tfor ( let i = 0, il = lights.length; i < il; i ++ ) {\n\n\t\t\tconst light = lights[ i ];\n\t\t\tconst shadow = light.shadow;\n\n\t\t\tif ( shadow === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLShadowMap:', light, 'has no shadow.' );\n\t\t\t\tcontinue;\n\n\t\t\t}\n\n\t\t\tif ( shadow.autoUpdate === false && shadow.needsUpdate === false ) continue;\n\n\t\t\t_shadowMapSize.copy( shadow.mapSize );\n\n\t\t\tconst shadowFrameExtents = shadow.getFrameExtents();\n\n\t\t\t_shadowMapSize.multiply( shadowFrameExtents );\n\n\t\t\t_viewportSize.copy( shadow.mapSize );\n\n\t\t\tif ( _shadowMapSize.x > maxTextureSize || _shadowMapSize.y > maxTextureSize ) {\n\n\t\t\t\tif ( _shadowMapSize.x > maxTextureSize ) {\n\n\t\t\t\t\t_viewportSize.x = Math.floor( maxTextureSize / shadowFrameExtents.x );\n\t\t\t\t\t_shadowMapSize.x = _viewportSize.x * shadowFrameExtents.x;\n\t\t\t\t\tshadow.mapSize.x = _viewportSize.x;\n\n\t\t\t\t}\n\n\t\t\t\tif ( _shadowMapSize.y > maxTextureSize ) {\n\n\t\t\t\t\t_viewportSize.y = Math.floor( maxTextureSize / shadowFrameExtents.y );\n\t\t\t\t\t_shadowMapSize.y = _viewportSize.y * shadowFrameExtents.y;\n\t\t\t\t\tshadow.mapSize.y = _viewportSize.y;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( shadow.map === null && ! shadow.isPointLightShadow && this.type === VSMShadowMap ) {\n\n\t\t\t\tconst pars = { minFilter: LinearFilter, magFilter: LinearFilter, format: RGBAFormat };\n\n\t\t\t\tshadow.map = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y, pars );\n\t\t\t\tshadow.map.texture.name = light.name + '.shadowMap';\n\n\t\t\t\tshadow.mapPass = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y, pars );\n\n\t\t\t\tshadow.camera.updateProjectionMatrix();\n\n\t\t\t}\n\n\t\t\tif ( shadow.map === null ) {\n\n\t\t\t\tconst pars = { minFilter: NearestFilter, magFilter: NearestFilter, format: RGBAFormat };\n\n\t\t\t\tshadow.map = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y, pars );\n\t\t\t\tshadow.map.texture.name = light.name + '.shadowMap';\n\n\t\t\t\tshadow.camera.updateProjectionMatrix();\n\n\t\t\t}\n\n\t\t\t_renderer.setRenderTarget( shadow.map );\n\t\t\t_renderer.clear();\n\n\t\t\tconst viewportCount = shadow.getViewportCount();\n\n\t\t\tfor ( let vp = 0; vp < viewportCount; vp ++ ) {\n\n\t\t\t\tconst viewport = shadow.getViewport( vp );\n\n\t\t\t\t_viewport.set(\n\t\t\t\t\t_viewportSize.x * viewport.x,\n\t\t\t\t\t_viewportSize.y * viewport.y,\n\t\t\t\t\t_viewportSize.x * viewport.z,\n\t\t\t\t\t_viewportSize.y * viewport.w\n\t\t\t\t);\n\n\t\t\t\t_state.viewport( _viewport );\n\n\t\t\t\tshadow.updateMatrices( light, vp );\n\n\t\t\t\t_frustum = shadow.getFrustum();\n\n\t\t\t\trenderObject( scene, camera, shadow.camera, light, this.type );\n\n\t\t\t}\n\n\t\t\t// do blur pass for VSM\n\n\t\t\tif ( ! shadow.isPointLightShadow && this.type === VSMShadowMap ) {\n\n\t\t\t\tVSMPass( shadow, camera );\n\n\t\t\t}\n\n\t\t\tshadow.needsUpdate = false;\n\n\t\t}\n\n\t\tscope.needsUpdate = false;\n\n\t\t_renderer.setRenderTarget( currentRenderTarget, activeCubeFace, activeMipmapLevel );\n\n\t};\n\n\tfunction VSMPass( shadow, camera ) {\n\n\t\tconst geometry = _objects.update( fullScreenMesh );\n\n\t\t// vertical pass\n\n\t\tshadowMaterialVertical.uniforms.shadow_pass.value = shadow.map.texture;\n\t\tshadowMaterialVertical.uniforms.resolution.value = shadow.mapSize;\n\t\tshadowMaterialVertical.uniforms.radius.value = shadow.radius;\n\t\t_renderer.setRenderTarget( shadow.mapPass );\n\t\t_renderer.clear();\n\t\t_renderer.renderBufferDirect( camera, null, geometry, shadowMaterialVertical, fullScreenMesh, null );\n\n\t\t// horizontal pass\n\n\t\tshadowMaterialHorizontal.uniforms.shadow_pass.value = shadow.mapPass.texture;\n\t\tshadowMaterialHorizontal.uniforms.resolution.value = shadow.mapSize;\n\t\tshadowMaterialHorizontal.uniforms.radius.value = shadow.radius;\n\t\t_renderer.setRenderTarget( shadow.map );\n\t\t_renderer.clear();\n\t\t_renderer.renderBufferDirect( camera, null, geometry, shadowMaterialHorizontal, fullScreenMesh, null );\n\n\t}\n\n\tfunction getDepthMaterialVariant( useMorphing, useSkinning, useInstancing ) {\n\n\t\tconst index = useMorphing << 0 | useSkinning << 1 | useInstancing << 2;\n\n\t\tlet material = _depthMaterials[ index ];\n\n\t\tif ( material === undefined ) {\n\n\t\t\tmaterial = new MeshDepthMaterial( {\n\n\t\t\t\tdepthPacking: RGBADepthPacking,\n\n\t\t\t\tmorphTargets: useMorphing,\n\t\t\t\tskinning: useSkinning\n\n\t\t\t} );\n\n\t\t\t_depthMaterials[ index ] = material;\n\n\t\t}\n\n\t\treturn material;\n\n\t}\n\n\tfunction getDistanceMaterialVariant( useMorphing, useSkinning, useInstancing ) {\n\n\t\tconst index = useMorphing << 0 | useSkinning << 1 | useInstancing << 2;\n\n\t\tlet material = _distanceMaterials[ index ];\n\n\t\tif ( material === undefined ) {\n\n\t\t\tmaterial = new MeshDistanceMaterial( {\n\n\t\t\t\tmorphTargets: useMorphing,\n\t\t\t\tskinning: useSkinning\n\n\t\t\t} );\n\n\t\t\t_distanceMaterials[ index ] = material;\n\n\t\t}\n\n\t\treturn material;\n\n\t}\n\n\tfunction getDepthMaterial( object, geometry, material, light, shadowCameraNear, shadowCameraFar, type ) {\n\n\t\tlet result = null;\n\n\t\tlet getMaterialVariant = getDepthMaterialVariant;\n\t\tlet customMaterial = object.customDepthMaterial;\n\n\t\tif ( light.isPointLight === true ) {\n\n\t\t\tgetMaterialVariant = getDistanceMaterialVariant;\n\t\t\tcustomMaterial = object.customDistanceMaterial;\n\n\t\t}\n\n\t\tif ( customMaterial === undefined ) {\n\n\t\t\tlet useMorphing = false;\n\n\t\t\tif ( material.morphTargets === true ) {\n\n\t\t\t\tuseMorphing = geometry.morphAttributes && geometry.morphAttributes.position && geometry.morphAttributes.position.length > 0;\n\n\t\t\t}\n\n\t\t\tlet useSkinning = false;\n\n\t\t\tif ( object.isSkinnedMesh === true ) {\n\n\t\t\t\tif ( material.skinning === true ) {\n\n\t\t\t\t\tuseSkinning = true;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.warn( 'THREE.WebGLShadowMap: THREE.SkinnedMesh with material.skinning set to false:', object );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tconst useInstancing = object.isInstancedMesh === true;\n\n\t\t\tresult = getMaterialVariant( useMorphing, useSkinning, useInstancing );\n\n\t\t} else {\n\n\t\t\tresult = customMaterial;\n\n\t\t}\n\n\t\tif ( _renderer.localClippingEnabled &&\n\t\t\t\tmaterial.clipShadows === true &&\n\t\t\t\tmaterial.clippingPlanes.length !== 0 ) {\n\n\t\t\t// in this case we need a unique material instance reflecting the\n\t\t\t// appropriate state\n\n\t\t\tconst keyA = result.uuid, keyB = material.uuid;\n\n\t\t\tlet materialsForVariant = _materialCache[ keyA ];\n\n\t\t\tif ( materialsForVariant === undefined ) {\n\n\t\t\t\tmaterialsForVariant = {};\n\t\t\t\t_materialCache[ keyA ] = materialsForVariant;\n\n\t\t\t}\n\n\t\t\tlet cachedMaterial = materialsForVariant[ keyB ];\n\n\t\t\tif ( cachedMaterial === undefined ) {\n\n\t\t\t\tcachedMaterial = result.clone();\n\t\t\t\tmaterialsForVariant[ keyB ] = cachedMaterial;\n\n\t\t\t}\n\n\t\t\tresult = cachedMaterial;\n\n\t\t}\n\n\t\tresult.visible = material.visible;\n\t\tresult.wireframe = material.wireframe;\n\n\t\tif ( type === VSMShadowMap ) {\n\n\t\t\tresult.side = ( material.shadowSide !== null ) ? material.shadowSide : material.side;\n\n\t\t} else {\n\n\t\t\tresult.side = ( material.shadowSide !== null ) ? material.shadowSide : shadowSide[ material.side ];\n\n\t\t}\n\n\t\tresult.clipShadows = material.clipShadows;\n\t\tresult.clippingPlanes = material.clippingPlanes;\n\t\tresult.clipIntersection = material.clipIntersection;\n\n\t\tresult.wireframeLinewidth = material.wireframeLinewidth;\n\t\tresult.linewidth = material.linewidth;\n\n\t\tif ( light.isPointLight === true && result.isMeshDistanceMaterial === true ) {\n\n\t\t\tresult.referencePosition.setFromMatrixPosition( light.matrixWorld );\n\t\t\tresult.nearDistance = shadowCameraNear;\n\t\t\tresult.farDistance = shadowCameraFar;\n\n\t\t}\n\n\t\treturn result;\n\n\t}\n\n\tfunction renderObject( object, camera, shadowCamera, light, type ) {\n\n\t\tif ( object.visible === false ) return;\n\n\t\tconst visible = object.layers.test( camera.layers );\n\n\t\tif ( visible && ( object.isMesh || object.isLine || object.isPoints ) ) {\n\n\t\t\tif ( ( object.castShadow || ( object.receiveShadow && type === VSMShadowMap ) ) && ( ! object.frustumCulled || _frustum.intersectsObject( object ) ) ) {\n\n\t\t\t\tobject.modelViewMatrix.multiplyMatrices( shadowCamera.matrixWorldInverse, object.matrixWorld );\n\n\t\t\t\tconst geometry = _objects.update( object );\n\t\t\t\tconst material = object.material;\n\n\t\t\t\tif ( Array.isArray( material ) ) {\n\n\t\t\t\t\tconst groups = geometry.groups;\n\n\t\t\t\t\tfor ( let k = 0, kl = groups.length; k < kl; k ++ ) {\n\n\t\t\t\t\t\tconst group = groups[ k ];\n\t\t\t\t\t\tconst groupMaterial = material[ group.materialIndex ];\n\n\t\t\t\t\t\tif ( groupMaterial && groupMaterial.visible ) {\n\n\t\t\t\t\t\t\tconst depthMaterial = getDepthMaterial( object, geometry, groupMaterial, light, shadowCamera.near, shadowCamera.far, type );\n\n\t\t\t\t\t\t\t_renderer.renderBufferDirect( shadowCamera, null, geometry, depthMaterial, object, group );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t} else if ( material.visible ) {\n\n\t\t\t\t\tconst depthMaterial = getDepthMaterial( object, geometry, material, light, shadowCamera.near, shadowCamera.far, type );\n\n\t\t\t\t\t_renderer.renderBufferDirect( shadowCamera, null, geometry, depthMaterial, object, null );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst children = object.children;\n\n\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\trenderObject( children[ i ], camera, shadowCamera, light, type );\n\n\t\t}\n\n\t}\n\n}\n\nfunction WebGLState( gl, extensions, capabilities ) {\n\n\tconst isWebGL2 = capabilities.isWebGL2;\n\n\tfunction ColorBuffer() {\n\n\t\tlet locked = false;\n\n\t\tconst color = new Vector4();\n\t\tlet currentColorMask = null;\n\t\tconst currentColorClear = new Vector4( 0, 0, 0, 0 );\n\n\t\treturn {\n\n\t\t\tsetMask: function ( colorMask ) {\n\n\t\t\t\tif ( currentColorMask !== colorMask && ! locked ) {\n\n\t\t\t\t\tgl.colorMask( colorMask, colorMask, colorMask, colorMask );\n\t\t\t\t\tcurrentColorMask = colorMask;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tsetLocked: function ( lock ) {\n\n\t\t\t\tlocked = lock;\n\n\t\t\t},\n\n\t\t\tsetClear: function ( r, g, b, a, premultipliedAlpha ) {\n\n\t\t\t\tif ( premultipliedAlpha === true ) {\n\n\t\t\t\t\tr *= a; g *= a; b *= a;\n\n\t\t\t\t}\n\n\t\t\t\tcolor.set( r, g, b, a );\n\n\t\t\t\tif ( currentColorClear.equals( color ) === false ) {\n\n\t\t\t\t\tgl.clearColor( r, g, b, a );\n\t\t\t\t\tcurrentColorClear.copy( color );\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\treset: function () {\n\n\t\t\t\tlocked = false;\n\n\t\t\t\tcurrentColorMask = null;\n\t\t\t\tcurrentColorClear.set( - 1, 0, 0, 0 ); // set to invalid state\n\n\t\t\t}\n\n\t\t};\n\n\t}\n\n\tfunction DepthBuffer() {\n\n\t\tlet locked = false;\n\n\t\tlet currentDepthMask = null;\n\t\tlet currentDepthFunc = null;\n\t\tlet currentDepthClear = null;\n\n\t\treturn {\n\n\t\t\tsetTest: function ( depthTest ) {\n\n\t\t\t\tif ( depthTest ) {\n\n\t\t\t\t\tenable( 2929 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tdisable( 2929 );\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tsetMask: function ( depthMask ) {\n\n\t\t\t\tif ( currentDepthMask !== depthMask && ! locked ) {\n\n\t\t\t\t\tgl.depthMask( depthMask );\n\t\t\t\t\tcurrentDepthMask = depthMask;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tsetFunc: function ( depthFunc ) {\n\n\t\t\t\tif ( currentDepthFunc !== depthFunc ) {\n\n\t\t\t\t\tif ( depthFunc ) {\n\n\t\t\t\t\t\tswitch ( depthFunc ) {\n\n\t\t\t\t\t\t\tcase NeverDepth:\n\n\t\t\t\t\t\t\t\tgl.depthFunc( 512 );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tcase AlwaysDepth:\n\n\t\t\t\t\t\t\t\tgl.depthFunc( 519 );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tcase LessDepth:\n\n\t\t\t\t\t\t\t\tgl.depthFunc( 513 );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tcase LessEqualDepth:\n\n\t\t\t\t\t\t\t\tgl.depthFunc( 515 );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tcase EqualDepth:\n\n\t\t\t\t\t\t\t\tgl.depthFunc( 514 );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tcase GreaterEqualDepth:\n\n\t\t\t\t\t\t\t\tgl.depthFunc( 518 );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tcase GreaterDepth:\n\n\t\t\t\t\t\t\t\tgl.depthFunc( 516 );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tcase NotEqualDepth:\n\n\t\t\t\t\t\t\t\tgl.depthFunc( 517 );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tdefault:\n\n\t\t\t\t\t\t\t\tgl.depthFunc( 515 );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tgl.depthFunc( 515 );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tcurrentDepthFunc = depthFunc;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tsetLocked: function ( lock ) {\n\n\t\t\t\tlocked = lock;\n\n\t\t\t},\n\n\t\t\tsetClear: function ( depth ) {\n\n\t\t\t\tif ( currentDepthClear !== depth ) {\n\n\t\t\t\t\tgl.clearDepth( depth );\n\t\t\t\t\tcurrentDepthClear = depth;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\treset: function () {\n\n\t\t\t\tlocked = false;\n\n\t\t\t\tcurrentDepthMask = null;\n\t\t\t\tcurrentDepthFunc = null;\n\t\t\t\tcurrentDepthClear = null;\n\n\t\t\t}\n\n\t\t};\n\n\t}\n\n\tfunction StencilBuffer() {\n\n\t\tlet locked = false;\n\n\t\tlet currentStencilMask = null;\n\t\tlet currentStencilFunc = null;\n\t\tlet currentStencilRef = null;\n\t\tlet currentStencilFuncMask = null;\n\t\tlet currentStencilFail = null;\n\t\tlet currentStencilZFail = null;\n\t\tlet currentStencilZPass = null;\n\t\tlet currentStencilClear = null;\n\n\t\treturn {\n\n\t\t\tsetTest: function ( stencilTest ) {\n\n\t\t\t\tif ( ! locked ) {\n\n\t\t\t\t\tif ( stencilTest ) {\n\n\t\t\t\t\t\tenable( 2960 );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tdisable( 2960 );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tsetMask: function ( stencilMask ) {\n\n\t\t\t\tif ( currentStencilMask !== stencilMask && ! locked ) {\n\n\t\t\t\t\tgl.stencilMask( stencilMask );\n\t\t\t\t\tcurrentStencilMask = stencilMask;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tsetFunc: function ( stencilFunc, stencilRef, stencilMask ) {\n\n\t\t\t\tif ( currentStencilFunc !== stencilFunc ||\n\t\t\t\t     currentStencilRef !== stencilRef ||\n\t\t\t\t     currentStencilFuncMask !== stencilMask ) {\n\n\t\t\t\t\tgl.stencilFunc( stencilFunc, stencilRef, stencilMask );\n\n\t\t\t\t\tcurrentStencilFunc = stencilFunc;\n\t\t\t\t\tcurrentStencilRef = stencilRef;\n\t\t\t\t\tcurrentStencilFuncMask = stencilMask;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tsetOp: function ( stencilFail, stencilZFail, stencilZPass ) {\n\n\t\t\t\tif ( currentStencilFail !== stencilFail ||\n\t\t\t\t     currentStencilZFail !== stencilZFail ||\n\t\t\t\t     currentStencilZPass !== stencilZPass ) {\n\n\t\t\t\t\tgl.stencilOp( stencilFail, stencilZFail, stencilZPass );\n\n\t\t\t\t\tcurrentStencilFail = stencilFail;\n\t\t\t\t\tcurrentStencilZFail = stencilZFail;\n\t\t\t\t\tcurrentStencilZPass = stencilZPass;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tsetLocked: function ( lock ) {\n\n\t\t\t\tlocked = lock;\n\n\t\t\t},\n\n\t\t\tsetClear: function ( stencil ) {\n\n\t\t\t\tif ( currentStencilClear !== stencil ) {\n\n\t\t\t\t\tgl.clearStencil( stencil );\n\t\t\t\t\tcurrentStencilClear = stencil;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\treset: function () {\n\n\t\t\t\tlocked = false;\n\n\t\t\t\tcurrentStencilMask = null;\n\t\t\t\tcurrentStencilFunc = null;\n\t\t\t\tcurrentStencilRef = null;\n\t\t\t\tcurrentStencilFuncMask = null;\n\t\t\t\tcurrentStencilFail = null;\n\t\t\t\tcurrentStencilZFail = null;\n\t\t\t\tcurrentStencilZPass = null;\n\t\t\t\tcurrentStencilClear = null;\n\n\t\t\t}\n\n\t\t};\n\n\t}\n\n\t//\n\n\tconst colorBuffer = new ColorBuffer();\n\tconst depthBuffer = new DepthBuffer();\n\tconst stencilBuffer = new StencilBuffer();\n\n\tlet enabledCapabilities = {};\n\n\tlet currentProgram = null;\n\n\tlet currentBlendingEnabled = null;\n\tlet currentBlending = null;\n\tlet currentBlendEquation = null;\n\tlet currentBlendSrc = null;\n\tlet currentBlendDst = null;\n\tlet currentBlendEquationAlpha = null;\n\tlet currentBlendSrcAlpha = null;\n\tlet currentBlendDstAlpha = null;\n\tlet currentPremultipledAlpha = false;\n\n\tlet currentFlipSided = null;\n\tlet currentCullFace = null;\n\n\tlet currentLineWidth = null;\n\n\tlet currentPolygonOffsetFactor = null;\n\tlet currentPolygonOffsetUnits = null;\n\n\tconst maxTextures = gl.getParameter( 35661 );\n\n\tlet lineWidthAvailable = false;\n\tlet version = 0;\n\tconst glVersion = gl.getParameter( 7938 );\n\n\tif ( glVersion.indexOf( 'WebGL' ) !== - 1 ) {\n\n\t\tversion = parseFloat( /^WebGL (\\d)/.exec( glVersion )[ 1 ] );\n\t\tlineWidthAvailable = ( version >= 1.0 );\n\n\t} else if ( glVersion.indexOf( 'OpenGL ES' ) !== - 1 ) {\n\n\t\tversion = parseFloat( /^OpenGL ES (\\d)/.exec( glVersion )[ 1 ] );\n\t\tlineWidthAvailable = ( version >= 2.0 );\n\n\t}\n\n\tlet currentTextureSlot = null;\n\tlet currentBoundTextures = {};\n\n\tconst currentScissor = new Vector4();\n\tconst currentViewport = new Vector4();\n\n\tfunction createTexture( type, target, count ) {\n\n\t\tconst data = new Uint8Array( 4 ); // 4 is required to match default unpack alignment of 4.\n\t\tconst texture = gl.createTexture();\n\n\t\tgl.bindTexture( type, texture );\n\t\tgl.texParameteri( type, 10241, 9728 );\n\t\tgl.texParameteri( type, 10240, 9728 );\n\n\t\tfor ( let i = 0; i < count; i ++ ) {\n\n\t\t\tgl.texImage2D( target + i, 0, 6408, 1, 1, 0, 6408, 5121, data );\n\n\t\t}\n\n\t\treturn texture;\n\n\t}\n\n\tconst emptyTextures = {};\n\temptyTextures[ 3553 ] = createTexture( 3553, 3553, 1 );\n\temptyTextures[ 34067 ] = createTexture( 34067, 34069, 6 );\n\n\t// init\n\n\tcolorBuffer.setClear( 0, 0, 0, 1 );\n\tdepthBuffer.setClear( 1 );\n\tstencilBuffer.setClear( 0 );\n\n\tenable( 2929 );\n\tdepthBuffer.setFunc( LessEqualDepth );\n\n\tsetFlipSided( false );\n\tsetCullFace( CullFaceBack );\n\tenable( 2884 );\n\n\tsetBlending( NoBlending );\n\n\t//\n\n\tfunction enable( id ) {\n\n\t\tif ( enabledCapabilities[ id ] !== true ) {\n\n\t\t\tgl.enable( id );\n\t\t\tenabledCapabilities[ id ] = true;\n\n\t\t}\n\n\t}\n\n\tfunction disable( id ) {\n\n\t\tif ( enabledCapabilities[ id ] !== false ) {\n\n\t\t\tgl.disable( id );\n\t\t\tenabledCapabilities[ id ] = false;\n\n\t\t}\n\n\t}\n\n\tfunction useProgram( program ) {\n\n\t\tif ( currentProgram !== program ) {\n\n\t\t\tgl.useProgram( program );\n\n\t\t\tcurrentProgram = program;\n\n\t\t\treturn true;\n\n\t\t}\n\n\t\treturn false;\n\n\t}\n\n\tconst equationToGL = {\n\t\t[ AddEquation ]: 32774,\n\t\t[ SubtractEquation ]: 32778,\n\t\t[ ReverseSubtractEquation ]: 32779\n\t};\n\n\tif ( isWebGL2 ) {\n\n\t\tequationToGL[ MinEquation ] = 32775;\n\t\tequationToGL[ MaxEquation ] = 32776;\n\n\t} else {\n\n\t\tconst extension = extensions.get( 'EXT_blend_minmax' );\n\n\t\tif ( extension !== null ) {\n\n\t\t\tequationToGL[ MinEquation ] = extension.MIN_EXT;\n\t\t\tequationToGL[ MaxEquation ] = extension.MAX_EXT;\n\n\t\t}\n\n\t}\n\n\tconst factorToGL = {\n\t\t[ ZeroFactor ]: 0,\n\t\t[ OneFactor ]: 1,\n\t\t[ SrcColorFactor ]: 768,\n\t\t[ SrcAlphaFactor ]: 770,\n\t\t[ SrcAlphaSaturateFactor ]: 776,\n\t\t[ DstColorFactor ]: 774,\n\t\t[ DstAlphaFactor ]: 772,\n\t\t[ OneMinusSrcColorFactor ]: 769,\n\t\t[ OneMinusSrcAlphaFactor ]: 771,\n\t\t[ OneMinusDstColorFactor ]: 775,\n\t\t[ OneMinusDstAlphaFactor ]: 773\n\t};\n\n\tfunction setBlending( blending, blendEquation, blendSrc, blendDst, blendEquationAlpha, blendSrcAlpha, blendDstAlpha, premultipliedAlpha ) {\n\n\t\tif ( blending === NoBlending ) {\n\n\t\t\tif ( currentBlendingEnabled ) {\n\n\t\t\t\tdisable( 3042 );\n\t\t\t\tcurrentBlendingEnabled = false;\n\n\t\t\t}\n\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( ! currentBlendingEnabled ) {\n\n\t\t\tenable( 3042 );\n\t\t\tcurrentBlendingEnabled = true;\n\n\t\t}\n\n\t\tif ( blending !== CustomBlending ) {\n\n\t\t\tif ( blending !== currentBlending || premultipliedAlpha !== currentPremultipledAlpha ) {\n\n\t\t\t\tif ( currentBlendEquation !== AddEquation || currentBlendEquationAlpha !== AddEquation ) {\n\n\t\t\t\t\tgl.blendEquation( 32774 );\n\n\t\t\t\t\tcurrentBlendEquation = AddEquation;\n\t\t\t\t\tcurrentBlendEquationAlpha = AddEquation;\n\n\t\t\t\t}\n\n\t\t\t\tif ( premultipliedAlpha ) {\n\n\t\t\t\t\tswitch ( blending ) {\n\n\t\t\t\t\t\tcase NormalBlending:\n\t\t\t\t\t\t\tgl.blendFuncSeparate( 1, 771, 1, 771 );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase AdditiveBlending:\n\t\t\t\t\t\t\tgl.blendFunc( 1, 1 );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase SubtractiveBlending:\n\t\t\t\t\t\t\tgl.blendFuncSeparate( 0, 0, 769, 771 );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase MultiplyBlending:\n\t\t\t\t\t\t\tgl.blendFuncSeparate( 0, 768, 0, 770 );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tdefault:\n\t\t\t\t\t\t\tconsole.error( 'THREE.WebGLState: Invalid blending: ', blending );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\tswitch ( blending ) {\n\n\t\t\t\t\t\tcase NormalBlending:\n\t\t\t\t\t\t\tgl.blendFuncSeparate( 770, 771, 1, 771 );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase AdditiveBlending:\n\t\t\t\t\t\t\tgl.blendFunc( 770, 1 );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase SubtractiveBlending:\n\t\t\t\t\t\t\tgl.blendFunc( 0, 769 );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase MultiplyBlending:\n\t\t\t\t\t\t\tgl.blendFunc( 0, 768 );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tdefault:\n\t\t\t\t\t\t\tconsole.error( 'THREE.WebGLState: Invalid blending: ', blending );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tcurrentBlendSrc = null;\n\t\t\t\tcurrentBlendDst = null;\n\t\t\t\tcurrentBlendSrcAlpha = null;\n\t\t\t\tcurrentBlendDstAlpha = null;\n\n\t\t\t\tcurrentBlending = blending;\n\t\t\t\tcurrentPremultipledAlpha = premultipliedAlpha;\n\n\t\t\t}\n\n\t\t\treturn;\n\n\t\t}\n\n\t\t// custom blending\n\n\t\tblendEquationAlpha = blendEquationAlpha || blendEquation;\n\t\tblendSrcAlpha = blendSrcAlpha || blendSrc;\n\t\tblendDstAlpha = blendDstAlpha || blendDst;\n\n\t\tif ( blendEquation !== currentBlendEquation || blendEquationAlpha !== currentBlendEquationAlpha ) {\n\n\t\t\tgl.blendEquationSeparate( equationToGL[ blendEquation ], equationToGL[ blendEquationAlpha ] );\n\n\t\t\tcurrentBlendEquation = blendEquation;\n\t\t\tcurrentBlendEquationAlpha = blendEquationAlpha;\n\n\t\t}\n\n\t\tif ( blendSrc !== currentBlendSrc || blendDst !== currentBlendDst || blendSrcAlpha !== currentBlendSrcAlpha || blendDstAlpha !== currentBlendDstAlpha ) {\n\n\t\t\tgl.blendFuncSeparate( factorToGL[ blendSrc ], factorToGL[ blendDst ], factorToGL[ blendSrcAlpha ], factorToGL[ blendDstAlpha ] );\n\n\t\t\tcurrentBlendSrc = blendSrc;\n\t\t\tcurrentBlendDst = blendDst;\n\t\t\tcurrentBlendSrcAlpha = blendSrcAlpha;\n\t\t\tcurrentBlendDstAlpha = blendDstAlpha;\n\n\t\t}\n\n\t\tcurrentBlending = blending;\n\t\tcurrentPremultipledAlpha = null;\n\n\t}\n\n\tfunction setMaterial( material, frontFaceCW ) {\n\n\t\tmaterial.side === DoubleSide\n\t\t\t? disable( 2884 )\n\t\t\t: enable( 2884 );\n\n\t\tlet flipSided = ( material.side === BackSide );\n\t\tif ( frontFaceCW ) flipSided = ! flipSided;\n\n\t\tsetFlipSided( flipSided );\n\n\t\t( material.blending === NormalBlending && material.transparent === false )\n\t\t\t? setBlending( NoBlending )\n\t\t\t: setBlending( material.blending, material.blendEquation, material.blendSrc, material.blendDst, material.blendEquationAlpha, material.blendSrcAlpha, material.blendDstAlpha, material.premultipliedAlpha );\n\n\t\tdepthBuffer.setFunc( material.depthFunc );\n\t\tdepthBuffer.setTest( material.depthTest );\n\t\tdepthBuffer.setMask( material.depthWrite );\n\t\tcolorBuffer.setMask( material.colorWrite );\n\n\t\tconst stencilWrite = material.stencilWrite;\n\t\tstencilBuffer.setTest( stencilWrite );\n\t\tif ( stencilWrite ) {\n\n\t\t\tstencilBuffer.setMask( material.stencilWriteMask );\n\t\t\tstencilBuffer.setFunc( material.stencilFunc, material.stencilRef, material.stencilFuncMask );\n\t\t\tstencilBuffer.setOp( material.stencilFail, material.stencilZFail, material.stencilZPass );\n\n\t\t}\n\n\t\tsetPolygonOffset( material.polygonOffset, material.polygonOffsetFactor, material.polygonOffsetUnits );\n\n\t}\n\n\t//\n\n\tfunction setFlipSided( flipSided ) {\n\n\t\tif ( currentFlipSided !== flipSided ) {\n\n\t\t\tif ( flipSided ) {\n\n\t\t\t\tgl.frontFace( 2304 );\n\n\t\t\t} else {\n\n\t\t\t\tgl.frontFace( 2305 );\n\n\t\t\t}\n\n\t\t\tcurrentFlipSided = flipSided;\n\n\t\t}\n\n\t}\n\n\tfunction setCullFace( cullFace ) {\n\n\t\tif ( cullFace !== CullFaceNone ) {\n\n\t\t\tenable( 2884 );\n\n\t\t\tif ( cullFace !== currentCullFace ) {\n\n\t\t\t\tif ( cullFace === CullFaceBack ) {\n\n\t\t\t\t\tgl.cullFace( 1029 );\n\n\t\t\t\t} else if ( cullFace === CullFaceFront ) {\n\n\t\t\t\t\tgl.cullFace( 1028 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tgl.cullFace( 1032 );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tdisable( 2884 );\n\n\t\t}\n\n\t\tcurrentCullFace = cullFace;\n\n\t}\n\n\tfunction setLineWidth( width ) {\n\n\t\tif ( width !== currentLineWidth ) {\n\n\t\t\tif ( lineWidthAvailable ) gl.lineWidth( width );\n\n\t\t\tcurrentLineWidth = width;\n\n\t\t}\n\n\t}\n\n\tfunction setPolygonOffset( polygonOffset, factor, units ) {\n\n\t\tif ( polygonOffset ) {\n\n\t\t\tenable( 32823 );\n\n\t\t\tif ( currentPolygonOffsetFactor !== factor || currentPolygonOffsetUnits !== units ) {\n\n\t\t\t\tgl.polygonOffset( factor, units );\n\n\t\t\t\tcurrentPolygonOffsetFactor = factor;\n\t\t\t\tcurrentPolygonOffsetUnits = units;\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tdisable( 32823 );\n\n\t\t}\n\n\t}\n\n\tfunction setScissorTest( scissorTest ) {\n\n\t\tif ( scissorTest ) {\n\n\t\t\tenable( 3089 );\n\n\t\t} else {\n\n\t\t\tdisable( 3089 );\n\n\t\t}\n\n\t}\n\n\t// texture\n\n\tfunction activeTexture( webglSlot ) {\n\n\t\tif ( webglSlot === undefined ) webglSlot = 33984 + maxTextures - 1;\n\n\t\tif ( currentTextureSlot !== webglSlot ) {\n\n\t\t\tgl.activeTexture( webglSlot );\n\t\t\tcurrentTextureSlot = webglSlot;\n\n\t\t}\n\n\t}\n\n\tfunction bindTexture( webglType, webglTexture ) {\n\n\t\tif ( currentTextureSlot === null ) {\n\n\t\t\tactiveTexture();\n\n\t\t}\n\n\t\tlet boundTexture = currentBoundTextures[ currentTextureSlot ];\n\n\t\tif ( boundTexture === undefined ) {\n\n\t\t\tboundTexture = { type: undefined, texture: undefined };\n\t\t\tcurrentBoundTextures[ currentTextureSlot ] = boundTexture;\n\n\t\t}\n\n\t\tif ( boundTexture.type !== webglType || boundTexture.texture !== webglTexture ) {\n\n\t\t\tgl.bindTexture( webglType, webglTexture || emptyTextures[ webglType ] );\n\n\t\t\tboundTexture.type = webglType;\n\t\t\tboundTexture.texture = webglTexture;\n\n\t\t}\n\n\t}\n\n\tfunction unbindTexture() {\n\n\t\tconst boundTexture = currentBoundTextures[ currentTextureSlot ];\n\n\t\tif ( boundTexture !== undefined && boundTexture.type !== undefined ) {\n\n\t\t\tgl.bindTexture( boundTexture.type, null );\n\n\t\t\tboundTexture.type = undefined;\n\t\t\tboundTexture.texture = undefined;\n\n\t\t}\n\n\t}\n\n\tfunction compressedTexImage2D() {\n\n\t\ttry {\n\n\t\t\tgl.compressedTexImage2D.apply( gl, arguments );\n\n\t\t} catch ( error ) {\n\n\t\t\tconsole.error( 'THREE.WebGLState:', error );\n\n\t\t}\n\n\t}\n\n\tfunction texImage2D() {\n\n\t\ttry {\n\n\t\t\tgl.texImage2D.apply( gl, arguments );\n\n\t\t} catch ( error ) {\n\n\t\t\tconsole.error( 'THREE.WebGLState:', error );\n\n\t\t}\n\n\t}\n\n\tfunction texImage3D() {\n\n\t\ttry {\n\n\t\t\tgl.texImage3D.apply( gl, arguments );\n\n\t\t} catch ( error ) {\n\n\t\t\tconsole.error( 'THREE.WebGLState:', error );\n\n\t\t}\n\n\t}\n\n\t//\n\n\tfunction scissor( scissor ) {\n\n\t\tif ( currentScissor.equals( scissor ) === false ) {\n\n\t\t\tgl.scissor( scissor.x, scissor.y, scissor.z, scissor.w );\n\t\t\tcurrentScissor.copy( scissor );\n\n\t\t}\n\n\t}\n\n\tfunction viewport( viewport ) {\n\n\t\tif ( currentViewport.equals( viewport ) === false ) {\n\n\t\t\tgl.viewport( viewport.x, viewport.y, viewport.z, viewport.w );\n\t\t\tcurrentViewport.copy( viewport );\n\n\t\t}\n\n\t}\n\n\t//\n\n\tfunction reset() {\n\n\t\tenabledCapabilities = {};\n\n\t\tcurrentTextureSlot = null;\n\t\tcurrentBoundTextures = {};\n\n\t\tcurrentProgram = null;\n\n\t\tcurrentBlendingEnabled = null;\n\t\tcurrentBlending = null;\n\t\tcurrentBlendEquation = null;\n\t\tcurrentBlendSrc = null;\n\t\tcurrentBlendDst = null;\n\t\tcurrentBlendEquationAlpha = null;\n\t\tcurrentBlendSrcAlpha = null;\n\t\tcurrentBlendDstAlpha = null;\n\t\tcurrentPremultipledAlpha = false;\n\n\t\tcurrentFlipSided = null;\n\t\tcurrentCullFace = null;\n\n\t\tcurrentLineWidth = null;\n\n\t\tcurrentPolygonOffsetFactor = null;\n\t\tcurrentPolygonOffsetUnits = null;\n\n\t\tcolorBuffer.reset();\n\t\tdepthBuffer.reset();\n\t\tstencilBuffer.reset();\n\n\t}\n\n\treturn {\n\n\t\tbuffers: {\n\t\t\tcolor: colorBuffer,\n\t\t\tdepth: depthBuffer,\n\t\t\tstencil: stencilBuffer\n\t\t},\n\n\t\tenable: enable,\n\t\tdisable: disable,\n\n\t\tuseProgram: useProgram,\n\n\t\tsetBlending: setBlending,\n\t\tsetMaterial: setMaterial,\n\n\t\tsetFlipSided: setFlipSided,\n\t\tsetCullFace: setCullFace,\n\n\t\tsetLineWidth: setLineWidth,\n\t\tsetPolygonOffset: setPolygonOffset,\n\n\t\tsetScissorTest: setScissorTest,\n\n\t\tactiveTexture: activeTexture,\n\t\tbindTexture: bindTexture,\n\t\tunbindTexture: unbindTexture,\n\t\tcompressedTexImage2D: compressedTexImage2D,\n\t\ttexImage2D: texImage2D,\n\t\ttexImage3D: texImage3D,\n\n\t\tscissor: scissor,\n\t\tviewport: viewport,\n\n\t\treset: reset\n\n\t};\n\n}\n\nfunction WebGLTextures( _gl, extensions, state, properties, capabilities, utils, info ) {\n\n\tconst isWebGL2 = capabilities.isWebGL2;\n\tconst maxTextures = capabilities.maxTextures;\n\tconst maxCubemapSize = capabilities.maxCubemapSize;\n\tconst maxTextureSize = capabilities.maxTextureSize;\n\tconst maxSamples = capabilities.maxSamples;\n\n\tconst _videoTextures = new WeakMap();\n\tlet _canvas;\n\n\t// cordova iOS (as of 5.0) still uses UIWebView, which provides OffscreenCanvas,\n\t// also OffscreenCanvas.getContext(\"webgl\"), but not OffscreenCanvas.getContext(\"2d\")!\n\t// Some implementations may only implement OffscreenCanvas partially (e.g. lacking 2d).\n\n\tlet useOffscreenCanvas = false;\n\n\ttry {\n\n\t\tuseOffscreenCanvas = typeof OffscreenCanvas !== 'undefined'\n\t\t\t&& ( new OffscreenCanvas( 1, 1 ).getContext( '2d' ) ) !== null;\n\n\t} catch ( err ) {\n\n\t\t// Ignore any errors\n\n\t}\n\n\tfunction createCanvas( width, height ) {\n\n\t\t// Use OffscreenCanvas when available. Specially needed in web workers\n\n\t\treturn useOffscreenCanvas ?\n\t\t\tnew OffscreenCanvas( width, height ) :\n\t\t\tdocument.createElementNS( 'http://www.w3.org/1999/xhtml', 'canvas' );\n\n\t}\n\n\tfunction resizeImage( image, needsPowerOfTwo, needsNewCanvas, maxSize ) {\n\n\t\tlet scale = 1;\n\n\t\t// handle case if texture exceeds max size\n\n\t\tif ( image.width > maxSize || image.height > maxSize ) {\n\n\t\t\tscale = maxSize / Math.max( image.width, image.height );\n\n\t\t}\n\n\t\t// only perform resize if necessary\n\n\t\tif ( scale < 1 || needsPowerOfTwo === true ) {\n\n\t\t\t// only perform resize for certain image types\n\n\t\t\tif ( ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) ||\n\t\t\t\t( typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement ) ||\n\t\t\t\t( typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap ) ) {\n\n\t\t\t\tconst floor = needsPowerOfTwo ? MathUtils.floorPowerOfTwo : Math.floor;\n\n\t\t\t\tconst width = floor( scale * image.width );\n\t\t\t\tconst height = floor( scale * image.height );\n\n\t\t\t\tif ( _canvas === undefined ) _canvas = createCanvas( width, height );\n\n\t\t\t\t// cube textures can't reuse the same canvas\n\n\t\t\t\tconst canvas = needsNewCanvas ? createCanvas( width, height ) : _canvas;\n\n\t\t\t\tcanvas.width = width;\n\t\t\t\tcanvas.height = height;\n\n\t\t\t\tconst context = canvas.getContext( '2d' );\n\t\t\t\tcontext.drawImage( image, 0, 0, width, height );\n\n\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Texture has been resized from (' + image.width + 'x' + image.height + ') to (' + width + 'x' + height + ').' );\n\n\t\t\t\treturn canvas;\n\n\t\t\t} else {\n\n\t\t\t\tif ( 'data' in image ) {\n\n\t\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Image in DataTexture is too big (' + image.width + 'x' + image.height + ').' );\n\n\t\t\t\t}\n\n\t\t\t\treturn image;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn image;\n\n\t}\n\n\tfunction isPowerOfTwo( image ) {\n\n\t\treturn MathUtils.isPowerOfTwo( image.width ) && MathUtils.isPowerOfTwo( image.height );\n\n\t}\n\n\tfunction textureNeedsPowerOfTwo( texture ) {\n\n\t\tif ( isWebGL2 ) return false;\n\n\t\treturn ( texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping ) ||\n\t\t\t( texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter );\n\n\t}\n\n\tfunction textureNeedsGenerateMipmaps( texture, supportsMips ) {\n\n\t\treturn texture.generateMipmaps && supportsMips &&\n\t\t\ttexture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter;\n\n\t}\n\n\tfunction generateMipmap( target, texture, width, height ) {\n\n\t\t_gl.generateMipmap( target );\n\n\t\tconst textureProperties = properties.get( texture );\n\n\t\t// Note: Math.log( x ) * Math.LOG2E used instead of Math.log2( x ) which is not supported by IE11\n\t\ttextureProperties.__maxMipLevel = Math.log( Math.max( width, height ) ) * Math.LOG2E;\n\n\t}\n\n\tfunction getInternalFormat( internalFormatName, glFormat, glType ) {\n\n\t\tif ( isWebGL2 === false ) return glFormat;\n\n\t\tif ( internalFormatName !== null ) {\n\n\t\t\tif ( _gl[ internalFormatName ] !== undefined ) return _gl[ internalFormatName ];\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: Attempt to use non-existing WebGL internal format \\'' + internalFormatName + '\\'' );\n\n\t\t}\n\n\t\tlet internalFormat = glFormat;\n\n\t\tif ( glFormat === 6403 ) {\n\n\t\t\tif ( glType === 5126 ) internalFormat = 33326;\n\t\t\tif ( glType === 5131 ) internalFormat = 33325;\n\t\t\tif ( glType === 5121 ) internalFormat = 33321;\n\n\t\t}\n\n\t\tif ( glFormat === 6407 ) {\n\n\t\t\tif ( glType === 5126 ) internalFormat = 34837;\n\t\t\tif ( glType === 5131 ) internalFormat = 34843;\n\t\t\tif ( glType === 5121 ) internalFormat = 32849;\n\n\t\t}\n\n\t\tif ( glFormat === 6408 ) {\n\n\t\t\tif ( glType === 5126 ) internalFormat = 34836;\n\t\t\tif ( glType === 5131 ) internalFormat = 34842;\n\t\t\tif ( glType === 5121 ) internalFormat = 32856;\n\n\t\t}\n\n\t\tif ( internalFormat === 33325 || internalFormat === 33326 ||\n\t\t\tinternalFormat === 34842 || internalFormat === 34836 ) {\n\n\t\t\textensions.get( 'EXT_color_buffer_float' );\n\n\t\t}\n\n\t\treturn internalFormat;\n\n\t}\n\n\t// Fallback filters for non-power-of-2 textures\n\n\tfunction filterFallback( f ) {\n\n\t\tif ( f === NearestFilter || f === NearestMipmapNearestFilter || f === NearestMipmapLinearFilter ) {\n\n\t\t\treturn 9728;\n\n\t\t}\n\n\t\treturn 9729;\n\n\t}\n\n\t//\n\n\tfunction onTextureDispose( event ) {\n\n\t\tconst texture = event.target;\n\n\t\ttexture.removeEventListener( 'dispose', onTextureDispose );\n\n\t\tdeallocateTexture( texture );\n\n\t\tif ( texture.isVideoTexture ) {\n\n\t\t\t_videoTextures.delete( texture );\n\n\t\t}\n\n\t\tinfo.memory.textures --;\n\n\t}\n\n\tfunction onRenderTargetDispose( event ) {\n\n\t\tconst renderTarget = event.target;\n\n\t\trenderTarget.removeEventListener( 'dispose', onRenderTargetDispose );\n\n\t\tdeallocateRenderTarget( renderTarget );\n\n\t\tinfo.memory.textures --;\n\n\t}\n\n\t//\n\n\tfunction deallocateTexture( texture ) {\n\n\t\tconst textureProperties = properties.get( texture );\n\n\t\tif ( textureProperties.__webglInit === undefined ) return;\n\n\t\t_gl.deleteTexture( textureProperties.__webglTexture );\n\n\t\tproperties.remove( texture );\n\n\t}\n\n\tfunction deallocateRenderTarget( renderTarget ) {\n\n\t\tconst renderTargetProperties = properties.get( renderTarget );\n\t\tconst textureProperties = properties.get( renderTarget.texture );\n\n\t\tif ( ! renderTarget ) return;\n\n\t\tif ( textureProperties.__webglTexture !== undefined ) {\n\n\t\t\t_gl.deleteTexture( textureProperties.__webglTexture );\n\n\t\t}\n\n\t\tif ( renderTarget.depthTexture ) {\n\n\t\t\trenderTarget.depthTexture.dispose();\n\n\t\t}\n\n\t\tif ( renderTarget.isWebGLCubeRenderTarget ) {\n\n\t\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\t\t_gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer[ i ] );\n\t\t\t\tif ( renderTargetProperties.__webglDepthbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer[ i ] );\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\t_gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer );\n\t\t\tif ( renderTargetProperties.__webglDepthbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer );\n\t\t\tif ( renderTargetProperties.__webglMultisampledFramebuffer ) _gl.deleteFramebuffer( renderTargetProperties.__webglMultisampledFramebuffer );\n\t\t\tif ( renderTargetProperties.__webglColorRenderbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglColorRenderbuffer );\n\t\t\tif ( renderTargetProperties.__webglDepthRenderbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthRenderbuffer );\n\n\t\t}\n\n\t\tproperties.remove( renderTarget.texture );\n\t\tproperties.remove( renderTarget );\n\n\t}\n\n\t//\n\n\tlet textureUnits = 0;\n\n\tfunction resetTextureUnits() {\n\n\t\ttextureUnits = 0;\n\n\t}\n\n\tfunction allocateTextureUnit() {\n\n\t\tconst textureUnit = textureUnits;\n\n\t\tif ( textureUnit >= maxTextures ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLTextures: Trying to use ' + textureUnit + ' texture units while this GPU supports only ' + maxTextures );\n\n\t\t}\n\n\t\ttextureUnits += 1;\n\n\t\treturn textureUnit;\n\n\t}\n\n\t//\n\n\tfunction setTexture2D( texture, slot ) {\n\n\t\tconst textureProperties = properties.get( texture );\n\n\t\tif ( texture.isVideoTexture ) updateVideoTexture( texture );\n\n\t\tif ( texture.version > 0 && textureProperties.__version !== texture.version ) {\n\n\t\t\tconst image = texture.image;\n\n\t\t\tif ( image === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Texture marked for update but image is undefined' );\n\n\t\t\t} else if ( image.complete === false ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Texture marked for update but image is incomplete' );\n\n\t\t\t} else {\n\n\t\t\t\tuploadTexture( textureProperties, texture, slot );\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t}\n\n\t\tstate.activeTexture( 33984 + slot );\n\t\tstate.bindTexture( 3553, textureProperties.__webglTexture );\n\n\t}\n\n\tfunction setTexture2DArray( texture, slot ) {\n\n\t\tconst textureProperties = properties.get( texture );\n\n\t\tif ( texture.version > 0 && textureProperties.__version !== texture.version ) {\n\n\t\t\tuploadTexture( textureProperties, texture, slot );\n\t\t\treturn;\n\n\t\t}\n\n\t\tstate.activeTexture( 33984 + slot );\n\t\tstate.bindTexture( 35866, textureProperties.__webglTexture );\n\n\t}\n\n\tfunction setTexture3D( texture, slot ) {\n\n\t\tconst textureProperties = properties.get( texture );\n\n\t\tif ( texture.version > 0 && textureProperties.__version !== texture.version ) {\n\n\t\t\tuploadTexture( textureProperties, texture, slot );\n\t\t\treturn;\n\n\t\t}\n\n\t\tstate.activeTexture( 33984 + slot );\n\t\tstate.bindTexture( 32879, textureProperties.__webglTexture );\n\n\t}\n\n\tfunction setTextureCube( texture, slot ) {\n\n\t\tconst textureProperties = properties.get( texture );\n\n\t\tif ( texture.version > 0 && textureProperties.__version !== texture.version ) {\n\n\t\t\tuploadCubeTexture( textureProperties, texture, slot );\n\t\t\treturn;\n\n\t\t}\n\n\t\tstate.activeTexture( 33984 + slot );\n\t\tstate.bindTexture( 34067, textureProperties.__webglTexture );\n\n\t}\n\n\tconst wrappingToGL = {\n\t\t[ RepeatWrapping ]: 10497,\n\t\t[ ClampToEdgeWrapping ]: 33071,\n\t\t[ MirroredRepeatWrapping ]: 33648\n\t};\n\n\tconst filterToGL = {\n\t\t[ NearestFilter ]: 9728,\n\t\t[ NearestMipmapNearestFilter ]: 9984,\n\t\t[ NearestMipmapLinearFilter ]: 9986,\n\n\t\t[ LinearFilter ]: 9729,\n\t\t[ LinearMipmapNearestFilter ]: 9985,\n\t\t[ LinearMipmapLinearFilter ]: 9987\n\t};\n\n\tfunction setTextureParameters( textureType, texture, supportsMips ) {\n\n\t\tif ( supportsMips ) {\n\n\t\t\t_gl.texParameteri( textureType, 10242, wrappingToGL[ texture.wrapS ] );\n\t\t\t_gl.texParameteri( textureType, 10243, wrappingToGL[ texture.wrapT ] );\n\n\t\t\tif ( textureType === 32879 || textureType === 35866 ) {\n\n\t\t\t\t_gl.texParameteri( textureType, 32882, wrappingToGL[ texture.wrapR ] );\n\n\t\t\t}\n\n\t\t\t_gl.texParameteri( textureType, 10240, filterToGL[ texture.magFilter ] );\n\t\t\t_gl.texParameteri( textureType, 10241, filterToGL[ texture.minFilter ] );\n\n\t\t} else {\n\n\t\t\t_gl.texParameteri( textureType, 10242, 33071 );\n\t\t\t_gl.texParameteri( textureType, 10243, 33071 );\n\n\t\t\tif ( textureType === 32879 || textureType === 35866 ) {\n\n\t\t\t\t_gl.texParameteri( textureType, 32882, 33071 );\n\n\t\t\t}\n\n\t\t\tif ( texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Texture is not power of two. Texture.wrapS and Texture.wrapT should be set to THREE.ClampToEdgeWrapping.' );\n\n\t\t\t}\n\n\t\t\t_gl.texParameteri( textureType, 10240, filterFallback( texture.magFilter ) );\n\t\t\t_gl.texParameteri( textureType, 10241, filterFallback( texture.minFilter ) );\n\n\t\t\tif ( texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Texture is not power of two. Texture.minFilter should be set to THREE.NearestFilter or THREE.LinearFilter.' );\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst extension = extensions.get( 'EXT_texture_filter_anisotropic' );\n\n\t\tif ( extension ) {\n\n\t\t\tif ( texture.type === FloatType && extensions.get( 'OES_texture_float_linear' ) === null ) return;\n\t\t\tif ( texture.type === HalfFloatType && ( isWebGL2 || extensions.get( 'OES_texture_half_float_linear' ) ) === null ) return;\n\n\t\t\tif ( texture.anisotropy > 1 || properties.get( texture ).__currentAnisotropy ) {\n\n\t\t\t\t_gl.texParameterf( textureType, extension.TEXTURE_MAX_ANISOTROPY_EXT, Math.min( texture.anisotropy, capabilities.getMaxAnisotropy() ) );\n\t\t\t\tproperties.get( texture ).__currentAnisotropy = texture.anisotropy;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tfunction initTexture( textureProperties, texture ) {\n\n\t\tif ( textureProperties.__webglInit === undefined ) {\n\n\t\t\ttextureProperties.__webglInit = true;\n\n\t\t\ttexture.addEventListener( 'dispose', onTextureDispose );\n\n\t\t\ttextureProperties.__webglTexture = _gl.createTexture();\n\n\t\t\tinfo.memory.textures ++;\n\n\t\t}\n\n\t}\n\n\tfunction uploadTexture( textureProperties, texture, slot ) {\n\n\t\tlet textureType = 3553;\n\n\t\tif ( texture.isDataTexture2DArray ) textureType = 35866;\n\t\tif ( texture.isDataTexture3D ) textureType = 32879;\n\n\t\tinitTexture( textureProperties, texture );\n\n\t\tstate.activeTexture( 33984 + slot );\n\t\tstate.bindTexture( textureType, textureProperties.__webglTexture );\n\n\t\t_gl.pixelStorei( 37440, texture.flipY );\n\t\t_gl.pixelStorei( 37441, texture.premultiplyAlpha );\n\t\t_gl.pixelStorei( 3317, texture.unpackAlignment );\n\n\t\tconst needsPowerOfTwo = textureNeedsPowerOfTwo( texture ) && isPowerOfTwo( texture.image ) === false;\n\t\tconst image = resizeImage( texture.image, needsPowerOfTwo, false, maxTextureSize );\n\n\t\tconst supportsMips = isPowerOfTwo( image ) || isWebGL2,\n\t\t\tglFormat = utils.convert( texture.format );\n\n\t\tlet glType = utils.convert( texture.type ),\n\t\t\tglInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType );\n\n\t\tsetTextureParameters( textureType, texture, supportsMips );\n\n\t\tlet mipmap;\n\t\tconst mipmaps = texture.mipmaps;\n\n\t\tif ( texture.isDepthTexture ) {\n\n\t\t\t// populate depth texture with dummy data\n\n\t\t\tglInternalFormat = 6402;\n\n\t\t\tif ( isWebGL2 ) {\n\n\t\t\t\tif ( texture.type === FloatType ) {\n\n\t\t\t\t\tglInternalFormat = 36012;\n\n\t\t\t\t} else if ( texture.type === UnsignedIntType ) {\n\n\t\t\t\t\tglInternalFormat = 33190;\n\n\t\t\t\t} else if ( texture.type === UnsignedInt248Type ) {\n\n\t\t\t\t\tglInternalFormat = 35056;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tglInternalFormat = 33189; // WebGL2 requires sized internalformat for glTexImage2D\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tif ( texture.type === FloatType ) {\n\n\t\t\t\t\tconsole.error( 'WebGLRenderer: Floating point depth texture requires WebGL2.' );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// validation checks for WebGL 1\n\n\t\t\tif ( texture.format === DepthFormat && glInternalFormat === 6402 ) {\n\n\t\t\t\t// The error INVALID_OPERATION is generated by texImage2D if format and internalformat are\n\t\t\t\t// DEPTH_COMPONENT and type is not UNSIGNED_SHORT or UNSIGNED_INT\n\t\t\t\t// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)\n\t\t\t\tif ( texture.type !== UnsignedShortType && texture.type !== UnsignedIntType ) {\n\n\t\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Use UnsignedShortType or UnsignedIntType for DepthFormat DepthTexture.' );\n\n\t\t\t\t\ttexture.type = UnsignedShortType;\n\t\t\t\t\tglType = utils.convert( texture.type );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( texture.format === DepthStencilFormat && glInternalFormat === 6402 ) {\n\n\t\t\t\t// Depth stencil textures need the DEPTH_STENCIL internal format\n\t\t\t\t// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)\n\t\t\t\tglInternalFormat = 34041;\n\n\t\t\t\t// The error INVALID_OPERATION is generated by texImage2D if format and internalformat are\n\t\t\t\t// DEPTH_STENCIL and type is not UNSIGNED_INT_24_8_WEBGL.\n\t\t\t\t// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)\n\t\t\t\tif ( texture.type !== UnsignedInt248Type ) {\n\n\t\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Use UnsignedInt248Type for DepthStencilFormat DepthTexture.' );\n\n\t\t\t\t\ttexture.type = UnsignedInt248Type;\n\t\t\t\t\tglType = utils.convert( texture.type );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t//\n\n\t\t\tstate.texImage2D( 3553, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, null );\n\n\t\t} else if ( texture.isDataTexture ) {\n\n\t\t\t// use manually created mipmaps if available\n\t\t\t// if there are no manual mipmaps\n\t\t\t// set 0 level mipmap and then use GL to generate other mipmap levels\n\n\t\t\tif ( mipmaps.length > 0 && supportsMips ) {\n\n\t\t\t\tfor ( let i = 0, il = mipmaps.length; i < il; i ++ ) {\n\n\t\t\t\t\tmipmap = mipmaps[ i ];\n\t\t\t\t\tstate.texImage2D( 3553, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );\n\n\t\t\t\t}\n\n\t\t\t\ttexture.generateMipmaps = false;\n\t\t\t\ttextureProperties.__maxMipLevel = mipmaps.length - 1;\n\n\t\t\t} else {\n\n\t\t\t\tstate.texImage2D( 3553, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, image.data );\n\t\t\t\ttextureProperties.__maxMipLevel = 0;\n\n\t\t\t}\n\n\t\t} else if ( texture.isCompressedTexture ) {\n\n\t\t\tfor ( let i = 0, il = mipmaps.length; i < il; i ++ ) {\n\n\t\t\t\tmipmap = mipmaps[ i ];\n\n\t\t\t\tif ( texture.format !== RGBAFormat && texture.format !== RGBFormat ) {\n\n\t\t\t\t\tif ( glFormat !== null ) {\n\n\t\t\t\t\t\tstate.compressedTexImage2D( 3553, i, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .uploadTexture()' );\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\tstate.texImage2D( 3553, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\ttextureProperties.__maxMipLevel = mipmaps.length - 1;\n\n\t\t} else if ( texture.isDataTexture2DArray ) {\n\n\t\t\tstate.texImage3D( 35866, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data );\n\t\t\ttextureProperties.__maxMipLevel = 0;\n\n\t\t} else if ( texture.isDataTexture3D ) {\n\n\t\t\tstate.texImage3D( 32879, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data );\n\t\t\ttextureProperties.__maxMipLevel = 0;\n\n\t\t} else {\n\n\t\t\t// regular Texture (image, video, canvas)\n\n\t\t\t// use manually created mipmaps if available\n\t\t\t// if there are no manual mipmaps\n\t\t\t// set 0 level mipmap and then use GL to generate other mipmap levels\n\n\t\t\tif ( mipmaps.length > 0 && supportsMips ) {\n\n\t\t\t\tfor ( let i = 0, il = mipmaps.length; i < il; i ++ ) {\n\n\t\t\t\t\tmipmap = mipmaps[ i ];\n\t\t\t\t\tstate.texImage2D( 3553, i, glInternalFormat, glFormat, glType, mipmap );\n\n\t\t\t\t}\n\n\t\t\t\ttexture.generateMipmaps = false;\n\t\t\t\ttextureProperties.__maxMipLevel = mipmaps.length - 1;\n\n\t\t\t} else {\n\n\t\t\t\tstate.texImage2D( 3553, 0, glInternalFormat, glFormat, glType, image );\n\t\t\t\ttextureProperties.__maxMipLevel = 0;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {\n\n\t\t\tgenerateMipmap( textureType, texture, image.width, image.height );\n\n\t\t}\n\n\t\ttextureProperties.__version = texture.version;\n\n\t\tif ( texture.onUpdate ) texture.onUpdate( texture );\n\n\t}\n\n\tfunction uploadCubeTexture( textureProperties, texture, slot ) {\n\n\t\tif ( texture.image.length !== 6 ) return;\n\n\t\tinitTexture( textureProperties, texture );\n\n\t\tstate.activeTexture( 33984 + slot );\n\t\tstate.bindTexture( 34067, textureProperties.__webglTexture );\n\n\t\t_gl.pixelStorei( 37440, texture.flipY );\n\n\t\tconst isCompressed = ( texture && ( texture.isCompressedTexture || texture.image[ 0 ].isCompressedTexture ) );\n\t\tconst isDataTexture = ( texture.image[ 0 ] && texture.image[ 0 ].isDataTexture );\n\n\t\tconst cubeImage = [];\n\n\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\tif ( ! isCompressed && ! isDataTexture ) {\n\n\t\t\t\tcubeImage[ i ] = resizeImage( texture.image[ i ], false, true, maxCubemapSize );\n\n\t\t\t} else {\n\n\t\t\t\tcubeImage[ i ] = isDataTexture ? texture.image[ i ].image : texture.image[ i ];\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst image = cubeImage[ 0 ],\n\t\t\tsupportsMips = isPowerOfTwo( image ) || isWebGL2,\n\t\t\tglFormat = utils.convert( texture.format ),\n\t\t\tglType = utils.convert( texture.type ),\n\t\t\tglInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType );\n\n\t\tsetTextureParameters( 34067, texture, supportsMips );\n\n\t\tlet mipmaps;\n\n\t\tif ( isCompressed ) {\n\n\t\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\t\tmipmaps = cubeImage[ i ].mipmaps;\n\n\t\t\t\tfor ( let j = 0; j < mipmaps.length; j ++ ) {\n\n\t\t\t\t\tconst mipmap = mipmaps[ j ];\n\n\t\t\t\t\tif ( texture.format !== RGBAFormat && texture.format !== RGBFormat ) {\n\n\t\t\t\t\t\tif ( glFormat !== null ) {\n\n\t\t\t\t\t\t\tstate.compressedTexImage2D( 34069 + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data );\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .setTextureCube()' );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tstate.texImage2D( 34069 + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\ttextureProperties.__maxMipLevel = mipmaps.length - 1;\n\n\t\t} else {\n\n\t\t\tmipmaps = texture.mipmaps;\n\n\t\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\t\tif ( isDataTexture ) {\n\n\t\t\t\t\tstate.texImage2D( 34069 + i, 0, glInternalFormat, cubeImage[ i ].width, cubeImage[ i ].height, 0, glFormat, glType, cubeImage[ i ].data );\n\n\t\t\t\t\tfor ( let j = 0; j < mipmaps.length; j ++ ) {\n\n\t\t\t\t\t\tconst mipmap = mipmaps[ j ];\n\t\t\t\t\t\tconst mipmapImage = mipmap.image[ i ].image;\n\n\t\t\t\t\t\tstate.texImage2D( 34069 + i, j + 1, glInternalFormat, mipmapImage.width, mipmapImage.height, 0, glFormat, glType, mipmapImage.data );\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\tstate.texImage2D( 34069 + i, 0, glInternalFormat, glFormat, glType, cubeImage[ i ] );\n\n\t\t\t\t\tfor ( let j = 0; j < mipmaps.length; j ++ ) {\n\n\t\t\t\t\t\tconst mipmap = mipmaps[ j ];\n\n\t\t\t\t\t\tstate.texImage2D( 34069 + i, j + 1, glInternalFormat, glFormat, glType, mipmap.image[ i ] );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\ttextureProperties.__maxMipLevel = mipmaps.length;\n\n\t\t}\n\n\t\tif ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {\n\n\t\t\t// We assume images for cube map have the same size.\n\t\t\tgenerateMipmap( 34067, texture, image.width, image.height );\n\n\t\t}\n\n\t\ttextureProperties.__version = texture.version;\n\n\t\tif ( texture.onUpdate ) texture.onUpdate( texture );\n\n\t}\n\n\t// Render targets\n\n\t// Setup storage for target texture and bind it to correct framebuffer\n\tfunction setupFrameBufferTexture( framebuffer, renderTarget, attachment, textureTarget ) {\n\n\t\tconst glFormat = utils.convert( renderTarget.texture.format );\n\t\tconst glType = utils.convert( renderTarget.texture.type );\n\t\tconst glInternalFormat = getInternalFormat( renderTarget.texture.internalFormat, glFormat, glType );\n\t\tstate.texImage2D( textureTarget, 0, glInternalFormat, renderTarget.width, renderTarget.height, 0, glFormat, glType, null );\n\t\t_gl.bindFramebuffer( 36160, framebuffer );\n\t\t_gl.framebufferTexture2D( 36160, attachment, textureTarget, properties.get( renderTarget.texture ).__webglTexture, 0 );\n\t\t_gl.bindFramebuffer( 36160, null );\n\n\t}\n\n\t// Setup storage for internal depth/stencil buffers and bind to correct framebuffer\n\tfunction setupRenderBufferStorage( renderbuffer, renderTarget, isMultisample ) {\n\n\t\t_gl.bindRenderbuffer( 36161, renderbuffer );\n\n\t\tif ( renderTarget.depthBuffer && ! renderTarget.stencilBuffer ) {\n\n\t\t\tlet glInternalFormat = 33189;\n\n\t\t\tif ( isMultisample ) {\n\n\t\t\t\tconst depthTexture = renderTarget.depthTexture;\n\n\t\t\t\tif ( depthTexture && depthTexture.isDepthTexture ) {\n\n\t\t\t\t\tif ( depthTexture.type === FloatType ) {\n\n\t\t\t\t\t\tglInternalFormat = 36012;\n\n\t\t\t\t\t} else if ( depthTexture.type === UnsignedIntType ) {\n\n\t\t\t\t\t\tglInternalFormat = 33190;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tconst samples = getRenderTargetSamples( renderTarget );\n\n\t\t\t\t_gl.renderbufferStorageMultisample( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );\n\n\t\t\t} else {\n\n\t\t\t\t_gl.renderbufferStorage( 36161, glInternalFormat, renderTarget.width, renderTarget.height );\n\n\t\t\t}\n\n\t\t\t_gl.framebufferRenderbuffer( 36160, 36096, 36161, renderbuffer );\n\n\t\t} else if ( renderTarget.depthBuffer && renderTarget.stencilBuffer ) {\n\n\t\t\tif ( isMultisample ) {\n\n\t\t\t\tconst samples = getRenderTargetSamples( renderTarget );\n\n\t\t\t\t_gl.renderbufferStorageMultisample( 36161, samples, 35056, renderTarget.width, renderTarget.height );\n\n\t\t\t} else {\n\n\t\t\t\t_gl.renderbufferStorage( 36161, 34041, renderTarget.width, renderTarget.height );\n\n\t\t\t}\n\n\n\t\t\t_gl.framebufferRenderbuffer( 36160, 33306, 36161, renderbuffer );\n\n\t\t} else {\n\n\t\t\tconst glFormat = utils.convert( renderTarget.texture.format );\n\t\t\tconst glType = utils.convert( renderTarget.texture.type );\n\t\t\tconst glInternalFormat = getInternalFormat( renderTarget.texture.internalFormat, glFormat, glType );\n\n\t\t\tif ( isMultisample ) {\n\n\t\t\t\tconst samples = getRenderTargetSamples( renderTarget );\n\n\t\t\t\t_gl.renderbufferStorageMultisample( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );\n\n\t\t\t} else {\n\n\t\t\t\t_gl.renderbufferStorage( 36161, glInternalFormat, renderTarget.width, renderTarget.height );\n\n\t\t\t}\n\n\t\t}\n\n\t\t_gl.bindRenderbuffer( 36161, null );\n\n\t}\n\n\t// Setup resources for a Depth Texture for a FBO (needs an extension)\n\tfunction setupDepthTexture( framebuffer, renderTarget ) {\n\n\t\tconst isCube = ( renderTarget && renderTarget.isWebGLCubeRenderTarget );\n\t\tif ( isCube ) throw new Error( 'Depth Texture with cube render targets is not supported' );\n\n\t\t_gl.bindFramebuffer( 36160, framebuffer );\n\n\t\tif ( ! ( renderTarget.depthTexture && renderTarget.depthTexture.isDepthTexture ) ) {\n\n\t\t\tthrow new Error( 'renderTarget.depthTexture must be an instance of THREE.DepthTexture' );\n\n\t\t}\n\n\t\t// upload an empty depth texture with framebuffer size\n\t\tif ( ! properties.get( renderTarget.depthTexture ).__webglTexture ||\n\t\t\t\trenderTarget.depthTexture.image.width !== renderTarget.width ||\n\t\t\t\trenderTarget.depthTexture.image.height !== renderTarget.height ) {\n\n\t\t\trenderTarget.depthTexture.image.width = renderTarget.width;\n\t\t\trenderTarget.depthTexture.image.height = renderTarget.height;\n\t\t\trenderTarget.depthTexture.needsUpdate = true;\n\n\t\t}\n\n\t\tsetTexture2D( renderTarget.depthTexture, 0 );\n\n\t\tconst webglDepthTexture = properties.get( renderTarget.depthTexture ).__webglTexture;\n\n\t\tif ( renderTarget.depthTexture.format === DepthFormat ) {\n\n\t\t\t_gl.framebufferTexture2D( 36160, 36096, 3553, webglDepthTexture, 0 );\n\n\t\t} else if ( renderTarget.depthTexture.format === DepthStencilFormat ) {\n\n\t\t\t_gl.framebufferTexture2D( 36160, 33306, 3553, webglDepthTexture, 0 );\n\n\t\t} else {\n\n\t\t\tthrow new Error( 'Unknown depthTexture format' );\n\n\t\t}\n\n\t}\n\n\t// Setup GL resources for a non-texture depth buffer\n\tfunction setupDepthRenderbuffer( renderTarget ) {\n\n\t\tconst renderTargetProperties = properties.get( renderTarget );\n\n\t\tconst isCube = ( renderTarget.isWebGLCubeRenderTarget === true );\n\n\t\tif ( renderTarget.depthTexture ) {\n\n\t\t\tif ( isCube ) throw new Error( 'target.depthTexture not supported in Cube render targets' );\n\n\t\t\tsetupDepthTexture( renderTargetProperties.__webglFramebuffer, renderTarget );\n\n\t\t} else {\n\n\t\t\tif ( isCube ) {\n\n\t\t\t\trenderTargetProperties.__webglDepthbuffer = [];\n\n\t\t\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\t\t\t_gl.bindFramebuffer( 36160, renderTargetProperties.__webglFramebuffer[ i ] );\n\t\t\t\t\trenderTargetProperties.__webglDepthbuffer[ i ] = _gl.createRenderbuffer();\n\t\t\t\t\tsetupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer[ i ], renderTarget, false );\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\t_gl.bindFramebuffer( 36160, renderTargetProperties.__webglFramebuffer );\n\t\t\t\trenderTargetProperties.__webglDepthbuffer = _gl.createRenderbuffer();\n\t\t\t\tsetupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer, renderTarget, false );\n\n\t\t\t}\n\n\t\t}\n\n\t\t_gl.bindFramebuffer( 36160, null );\n\n\t}\n\n\t// Set up GL resources for the render target\n\tfunction setupRenderTarget( renderTarget ) {\n\n\t\tconst renderTargetProperties = properties.get( renderTarget );\n\t\tconst textureProperties = properties.get( renderTarget.texture );\n\n\t\trenderTarget.addEventListener( 'dispose', onRenderTargetDispose );\n\n\t\ttextureProperties.__webglTexture = _gl.createTexture();\n\n\t\tinfo.memory.textures ++;\n\n\t\tconst isCube = ( renderTarget.isWebGLCubeRenderTarget === true );\n\t\tconst isMultisample = ( renderTarget.isWebGLMultisampleRenderTarget === true );\n\t\tconst supportsMips = isPowerOfTwo( renderTarget ) || isWebGL2;\n\n\t\t// Handles WebGL2 RGBFormat fallback - #18858\n\n\t\tif ( isWebGL2 && renderTarget.texture.format === RGBFormat && ( renderTarget.texture.type === FloatType || renderTarget.texture.type === HalfFloatType ) ) {\n\n\t\t\trenderTarget.texture.format = RGBAFormat;\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: Rendering to textures with RGB format is not supported. Using RGBA format instead.' );\n\n\t\t}\n\n\t\t// Setup framebuffer\n\n\t\tif ( isCube ) {\n\n\t\t\trenderTargetProperties.__webglFramebuffer = [];\n\n\t\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\t\trenderTargetProperties.__webglFramebuffer[ i ] = _gl.createFramebuffer();\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\trenderTargetProperties.__webglFramebuffer = _gl.createFramebuffer();\n\n\t\t\tif ( isMultisample ) {\n\n\t\t\t\tif ( isWebGL2 ) {\n\n\t\t\t\t\trenderTargetProperties.__webglMultisampledFramebuffer = _gl.createFramebuffer();\n\t\t\t\t\trenderTargetProperties.__webglColorRenderbuffer = _gl.createRenderbuffer();\n\n\t\t\t\t\t_gl.bindRenderbuffer( 36161, renderTargetProperties.__webglColorRenderbuffer );\n\n\t\t\t\t\tconst glFormat = utils.convert( renderTarget.texture.format );\n\t\t\t\t\tconst glType = utils.convert( renderTarget.texture.type );\n\t\t\t\t\tconst glInternalFormat = getInternalFormat( renderTarget.texture.internalFormat, glFormat, glType );\n\t\t\t\t\tconst samples = getRenderTargetSamples( renderTarget );\n\t\t\t\t\t_gl.renderbufferStorageMultisample( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );\n\n\t\t\t\t\t_gl.bindFramebuffer( 36160, renderTargetProperties.__webglMultisampledFramebuffer );\n\t\t\t\t\t_gl.framebufferRenderbuffer( 36160, 36064, 36161, renderTargetProperties.__webglColorRenderbuffer );\n\t\t\t\t\t_gl.bindRenderbuffer( 36161, null );\n\n\t\t\t\t\tif ( renderTarget.depthBuffer ) {\n\n\t\t\t\t\t\trenderTargetProperties.__webglDepthRenderbuffer = _gl.createRenderbuffer();\n\t\t\t\t\t\tsetupRenderBufferStorage( renderTargetProperties.__webglDepthRenderbuffer, renderTarget, true );\n\n\t\t\t\t\t}\n\n\t\t\t\t\t_gl.bindFramebuffer( 36160, null );\n\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: WebGLMultisampleRenderTarget can only be used with WebGL2.' );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\t// Setup color buffer\n\n\t\tif ( isCube ) {\n\n\t\t\tstate.bindTexture( 34067, textureProperties.__webglTexture );\n\t\t\tsetTextureParameters( 34067, renderTarget.texture, supportsMips );\n\n\t\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\t\tsetupFrameBufferTexture( renderTargetProperties.__webglFramebuffer[ i ], renderTarget, 36064, 34069 + i );\n\n\t\t\t}\n\n\t\t\tif ( textureNeedsGenerateMipmaps( renderTarget.texture, supportsMips ) ) {\n\n\t\t\t\tgenerateMipmap( 34067, renderTarget.texture, renderTarget.width, renderTarget.height );\n\n\t\t\t}\n\n\t\t\tstate.bindTexture( 34067, null );\n\n\t\t} else {\n\n\t\t\tstate.bindTexture( 3553, textureProperties.__webglTexture );\n\t\t\tsetTextureParameters( 3553, renderTarget.texture, supportsMips );\n\t\t\tsetupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, 36064, 3553 );\n\n\t\t\tif ( textureNeedsGenerateMipmaps( renderTarget.texture, supportsMips ) ) {\n\n\t\t\t\tgenerateMipmap( 3553, renderTarget.texture, renderTarget.width, renderTarget.height );\n\n\t\t\t}\n\n\t\t\tstate.bindTexture( 3553, null );\n\n\t\t}\n\n\t\t// Setup depth and stencil buffers\n\n\t\tif ( renderTarget.depthBuffer ) {\n\n\t\t\tsetupDepthRenderbuffer( renderTarget );\n\n\t\t}\n\n\t}\n\n\tfunction updateRenderTargetMipmap( renderTarget ) {\n\n\t\tconst texture = renderTarget.texture;\n\t\tconst supportsMips = isPowerOfTwo( renderTarget ) || isWebGL2;\n\n\t\tif ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {\n\n\t\t\tconst target = renderTarget.isWebGLCubeRenderTarget ? 34067 : 3553;\n\t\t\tconst webglTexture = properties.get( texture ).__webglTexture;\n\n\t\t\tstate.bindTexture( target, webglTexture );\n\t\t\tgenerateMipmap( target, texture, renderTarget.width, renderTarget.height );\n\t\t\tstate.bindTexture( target, null );\n\n\t\t}\n\n\t}\n\n\tfunction updateMultisampleRenderTarget( renderTarget ) {\n\n\t\tif ( renderTarget.isWebGLMultisampleRenderTarget ) {\n\n\t\t\tif ( isWebGL2 ) {\n\n\t\t\t\tconst renderTargetProperties = properties.get( renderTarget );\n\n\t\t\t\t_gl.bindFramebuffer( 36008, renderTargetProperties.__webglMultisampledFramebuffer );\n\t\t\t\t_gl.bindFramebuffer( 36009, renderTargetProperties.__webglFramebuffer );\n\n\t\t\t\tconst width = renderTarget.width;\n\t\t\t\tconst height = renderTarget.height;\n\t\t\t\tlet mask = 16384;\n\n\t\t\t\tif ( renderTarget.depthBuffer ) mask |= 256;\n\t\t\t\tif ( renderTarget.stencilBuffer ) mask |= 1024;\n\n\t\t\t\t_gl.blitFramebuffer( 0, 0, width, height, 0, 0, width, height, mask, 9728 );\n\n\t\t\t\t_gl.bindFramebuffer( 36160, renderTargetProperties.__webglMultisampledFramebuffer ); // see #18905\n\n\t\t\t} else {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: WebGLMultisampleRenderTarget can only be used with WebGL2.' );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tfunction getRenderTargetSamples( renderTarget ) {\n\n\t\treturn ( isWebGL2 && renderTarget.isWebGLMultisampleRenderTarget ) ?\n\t\t\tMath.min( maxSamples, renderTarget.samples ) : 0;\n\n\t}\n\n\tfunction updateVideoTexture( texture ) {\n\n\t\tconst frame = info.render.frame;\n\n\t\t// Check the last frame we updated the VideoTexture\n\n\t\tif ( _videoTextures.get( texture ) !== frame ) {\n\n\t\t\t_videoTextures.set( texture, frame );\n\t\t\ttexture.update();\n\n\t\t}\n\n\t}\n\n\t// backwards compatibility\n\n\tlet warnedTexture2D = false;\n\tlet warnedTextureCube = false;\n\n\tfunction safeSetTexture2D( texture, slot ) {\n\n\t\tif ( texture && texture.isWebGLRenderTarget ) {\n\n\t\t\tif ( warnedTexture2D === false ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLTextures.safeSetTexture2D: don\\'t use render targets as textures. Use their .texture property instead.' );\n\t\t\t\twarnedTexture2D = true;\n\n\t\t\t}\n\n\t\t\ttexture = texture.texture;\n\n\t\t}\n\n\t\tsetTexture2D( texture, slot );\n\n\t}\n\n\tfunction safeSetTextureCube( texture, slot ) {\n\n\t\tif ( texture && texture.isWebGLCubeRenderTarget ) {\n\n\t\t\tif ( warnedTextureCube === false ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLTextures.safeSetTextureCube: don\\'t use cube render targets as textures. Use their .texture property instead.' );\n\t\t\t\twarnedTextureCube = true;\n\n\t\t\t}\n\n\t\t\ttexture = texture.texture;\n\n\t\t}\n\n\n\t\tsetTextureCube( texture, slot );\n\n\t}\n\n\t//\n\n\tthis.allocateTextureUnit = allocateTextureUnit;\n\tthis.resetTextureUnits = resetTextureUnits;\n\n\tthis.setTexture2D = setTexture2D;\n\tthis.setTexture2DArray = setTexture2DArray;\n\tthis.setTexture3D = setTexture3D;\n\tthis.setTextureCube = setTextureCube;\n\tthis.setupRenderTarget = setupRenderTarget;\n\tthis.updateRenderTargetMipmap = updateRenderTargetMipmap;\n\tthis.updateMultisampleRenderTarget = updateMultisampleRenderTarget;\n\n\tthis.safeSetTexture2D = safeSetTexture2D;\n\tthis.safeSetTextureCube = safeSetTextureCube;\n\n}\n\nfunction WebGLUtils( gl, extensions, capabilities ) {\n\n\tconst isWebGL2 = capabilities.isWebGL2;\n\n\tfunction convert( p ) {\n\n\t\tlet extension;\n\n\t\tif ( p === UnsignedByteType ) return 5121;\n\t\tif ( p === UnsignedShort4444Type ) return 32819;\n\t\tif ( p === UnsignedShort5551Type ) return 32820;\n\t\tif ( p === UnsignedShort565Type ) return 33635;\n\n\t\tif ( p === ByteType ) return 5120;\n\t\tif ( p === ShortType ) return 5122;\n\t\tif ( p === UnsignedShortType ) return 5123;\n\t\tif ( p === IntType ) return 5124;\n\t\tif ( p === UnsignedIntType ) return 5125;\n\t\tif ( p === FloatType ) return 5126;\n\n\t\tif ( p === HalfFloatType ) {\n\n\t\t\tif ( isWebGL2 ) return 5131;\n\n\t\t\textension = extensions.get( 'OES_texture_half_float' );\n\n\t\t\tif ( extension !== null ) {\n\n\t\t\t\treturn extension.HALF_FLOAT_OES;\n\n\t\t\t} else {\n\n\t\t\t\treturn null;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( p === AlphaFormat ) return 6406;\n\t\tif ( p === RGBFormat ) return 6407;\n\t\tif ( p === RGBAFormat ) return 6408;\n\t\tif ( p === LuminanceFormat ) return 6409;\n\t\tif ( p === LuminanceAlphaFormat ) return 6410;\n\t\tif ( p === DepthFormat ) return 6402;\n\t\tif ( p === DepthStencilFormat ) return 34041;\n\t\tif ( p === RedFormat ) return 6403;\n\n\t\t// WebGL2 formats.\n\n\t\tif ( p === RedIntegerFormat ) return 36244;\n\t\tif ( p === RGFormat ) return 33319;\n\t\tif ( p === RGIntegerFormat ) return 33320;\n\t\tif ( p === RGBIntegerFormat ) return 36248;\n\t\tif ( p === RGBAIntegerFormat ) return 36249;\n\n\t\tif ( p === RGB_S3TC_DXT1_Format || p === RGBA_S3TC_DXT1_Format ||\n\t\t\tp === RGBA_S3TC_DXT3_Format || p === RGBA_S3TC_DXT5_Format ) {\n\n\t\t\textension = extensions.get( 'WEBGL_compressed_texture_s3tc' );\n\n\t\t\tif ( extension !== null ) {\n\n\t\t\t\tif ( p === RGB_S3TC_DXT1_Format ) return extension.COMPRESSED_RGB_S3TC_DXT1_EXT;\n\t\t\t\tif ( p === RGBA_S3TC_DXT1_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT1_EXT;\n\t\t\t\tif ( p === RGBA_S3TC_DXT3_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT3_EXT;\n\t\t\t\tif ( p === RGBA_S3TC_DXT5_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT5_EXT;\n\n\t\t\t} else {\n\n\t\t\t\treturn null;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( p === RGB_PVRTC_4BPPV1_Format || p === RGB_PVRTC_2BPPV1_Format ||\n\t\t\tp === RGBA_PVRTC_4BPPV1_Format || p === RGBA_PVRTC_2BPPV1_Format ) {\n\n\t\t\textension = extensions.get( 'WEBGL_compressed_texture_pvrtc' );\n\n\t\t\tif ( extension !== null ) {\n\n\t\t\t\tif ( p === RGB_PVRTC_4BPPV1_Format ) return extension.COMPRESSED_RGB_PVRTC_4BPPV1_IMG;\n\t\t\t\tif ( p === RGB_PVRTC_2BPPV1_Format ) return extension.COMPRESSED_RGB_PVRTC_2BPPV1_IMG;\n\t\t\t\tif ( p === RGBA_PVRTC_4BPPV1_Format ) return extension.COMPRESSED_RGBA_PVRTC_4BPPV1_IMG;\n\t\t\t\tif ( p === RGBA_PVRTC_2BPPV1_Format ) return extension.COMPRESSED_RGBA_PVRTC_2BPPV1_IMG;\n\n\t\t\t} else {\n\n\t\t\t\treturn null;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( p === RGB_ETC1_Format ) {\n\n\t\t\textension = extensions.get( 'WEBGL_compressed_texture_etc1' );\n\n\t\t\tif ( extension !== null ) {\n\n\t\t\t\treturn extension.COMPRESSED_RGB_ETC1_WEBGL;\n\n\t\t\t} else {\n\n\t\t\t\treturn null;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( p === RGB_ETC2_Format || p === RGBA_ETC2_EAC_Format ) {\n\n\t\t\textension = extensions.get( 'WEBGL_compressed_texture_etc' );\n\n\t\t\tif ( extension !== null ) {\n\n\t\t\t\tif ( p === RGB_ETC2_Format ) return extension.COMPRESSED_RGB8_ETC2;\n\t\t\t\tif ( p === RGBA_ETC2_EAC_Format ) return extension.COMPRESSED_RGBA8_ETC2_EAC;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( p === RGBA_ASTC_4x4_Format || p === RGBA_ASTC_5x4_Format || p === RGBA_ASTC_5x5_Format ||\n\t\t\tp === RGBA_ASTC_6x5_Format || p === RGBA_ASTC_6x6_Format || p === RGBA_ASTC_8x5_Format ||\n\t\t\tp === RGBA_ASTC_8x6_Format || p === RGBA_ASTC_8x8_Format || p === RGBA_ASTC_10x5_Format ||\n\t\t\tp === RGBA_ASTC_10x6_Format || p === RGBA_ASTC_10x8_Format || p === RGBA_ASTC_10x10_Format ||\n\t\t\tp === RGBA_ASTC_12x10_Format || p === RGBA_ASTC_12x12_Format ||\n\t\t\tp === SRGB8_ALPHA8_ASTC_4x4_Format || p === SRGB8_ALPHA8_ASTC_5x4_Format || p === SRGB8_ALPHA8_ASTC_5x5_Format ||\n\t\t\tp === SRGB8_ALPHA8_ASTC_6x5_Format || p === SRGB8_ALPHA8_ASTC_6x6_Format || p === SRGB8_ALPHA8_ASTC_8x5_Format ||\n\t\t\tp === SRGB8_ALPHA8_ASTC_8x6_Format || p === SRGB8_ALPHA8_ASTC_8x8_Format || p === SRGB8_ALPHA8_ASTC_10x5_Format ||\n\t\t\tp === SRGB8_ALPHA8_ASTC_10x6_Format || p === SRGB8_ALPHA8_ASTC_10x8_Format || p === SRGB8_ALPHA8_ASTC_10x10_Format ||\n\t\t\tp === SRGB8_ALPHA8_ASTC_12x10_Format || p === SRGB8_ALPHA8_ASTC_12x12_Format ) {\n\n\t\t\textension = extensions.get( 'WEBGL_compressed_texture_astc' );\n\n\t\t\tif ( extension !== null ) {\n\n\t\t\t\t// TODO Complete?\n\n\t\t\t\treturn p;\n\n\t\t\t} else {\n\n\t\t\t\treturn null;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( p === RGBA_BPTC_Format ) {\n\n\t\t\textension = extensions.get( 'EXT_texture_compression_bptc' );\n\n\t\t\tif ( extension !== null ) {\n\n\t\t\t\t// TODO Complete?\n\n\t\t\t\treturn p;\n\n\t\t\t} else {\n\n\t\t\t\treturn null;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( p === UnsignedInt248Type ) {\n\n\t\t\tif ( isWebGL2 ) return 34042;\n\n\t\t\textension = extensions.get( 'WEBGL_depth_texture' );\n\n\t\t\tif ( extension !== null ) {\n\n\t\t\t\treturn extension.UNSIGNED_INT_24_8_WEBGL;\n\n\t\t\t} else {\n\n\t\t\t\treturn null;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\treturn { convert: convert };\n\n}\n\nfunction ArrayCamera( array = [] ) {\n\n\tPerspectiveCamera.call( this );\n\n\tthis.cameras = array;\n\n}\n\nArrayCamera.prototype = Object.assign( Object.create( PerspectiveCamera.prototype ), {\n\n\tconstructor: ArrayCamera,\n\n\tisArrayCamera: true\n\n} );\n\nfunction Group() {\n\n\tObject3D.call( this );\n\n\tthis.type = 'Group';\n\n}\n\nGroup.prototype = Object.assign( Object.create( Object3D.prototype ), {\n\n\tconstructor: Group,\n\n\tisGroup: true\n\n} );\n\nfunction WebXRController() {\n\n\tthis._targetRay = null;\n\tthis._grip = null;\n\tthis._hand = null;\n\n}\n\nObject.assign( WebXRController.prototype, {\n\n\tconstructor: WebXRController,\n\n\tgetHandSpace: function () {\n\n\t\tif ( this._hand === null ) {\n\n\t\t\tthis._hand = new Group();\n\t\t\tthis._hand.matrixAutoUpdate = false;\n\t\t\tthis._hand.visible = false;\n\n\t\t\tthis._hand.joints = [];\n\t\t\tthis._hand.inputState = { pinching: false };\n\n\t\t\tif ( window.XRHand ) {\n\n\t\t\t\tfor ( let i = 0; i <= window.XRHand.LITTLE_PHALANX_TIP; i ++ ) {\n\n\t\t\t\t\t// The transform of this joint will be updated with the joint pose on each frame\n\t\t\t\t\tconst joint = new Group();\n\t\t\t\t\tjoint.matrixAutoUpdate = false;\n\t\t\t\t\tjoint.visible = false;\n\t\t\t\t\tthis._hand.joints.push( joint );\n\t\t\t\t\t// ??\n\t\t\t\t\tthis._hand.add( joint );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn this._hand;\n\n\t},\n\n\tgetTargetRaySpace: function () {\n\n\t\tif ( this._targetRay === null ) {\n\n\t\t\tthis._targetRay = new Group();\n\t\t\tthis._targetRay.matrixAutoUpdate = false;\n\t\t\tthis._targetRay.visible = false;\n\n\t\t}\n\n\t\treturn this._targetRay;\n\n\t},\n\n\tgetGripSpace: function () {\n\n\t\tif ( this._grip === null ) {\n\n\t\t\tthis._grip = new Group();\n\t\t\tthis._grip.matrixAutoUpdate = false;\n\t\t\tthis._grip.visible = false;\n\n\t\t}\n\n\t\treturn this._grip;\n\n\t},\n\n\tdispatchEvent: function ( event ) {\n\n\t\tif ( this._targetRay !== null ) {\n\n\t\t\tthis._targetRay.dispatchEvent( event );\n\n\t\t}\n\n\t\tif ( this._grip !== null ) {\n\n\t\t\tthis._grip.dispatchEvent( event );\n\n\t\t}\n\n\t\tif ( this._hand !== null ) {\n\n\t\t\tthis._hand.dispatchEvent( event );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tdisconnect: function ( inputSource ) {\n\n\t\tthis.dispatchEvent( { type: 'disconnected', data: inputSource } );\n\n\t\tif ( this._targetRay !== null ) {\n\n\t\t\tthis._targetRay.visible = false;\n\n\t\t}\n\n\t\tif ( this._grip !== null ) {\n\n\t\t\tthis._grip.visible = false;\n\n\t\t}\n\n\t\tif ( this._hand !== null ) {\n\n\t\t\tthis._hand.visible = false;\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tupdate: function ( inputSource, frame, referenceSpace ) {\n\n\t\tlet inputPose = null;\n\t\tlet gripPose = null;\n\t\tlet handPose = null;\n\n\t\tconst targetRay = this._targetRay;\n\t\tconst grip = this._grip;\n\t\tconst hand = this._hand;\n\n\t\tif ( inputSource && frame.session.visibilityState !== 'visible-blurred' ) {\n\n\t\t\tif ( hand && inputSource.hand ) {\n\n\t\t\t\thandPose = true;\n\n\t\t\t\tfor ( let i = 0; i <= window.XRHand.LITTLE_PHALANX_TIP; i ++ ) {\n\n\t\t\t\t\tif ( inputSource.hand[ i ] ) {\n\n\t\t\t\t\t\t// Update the joints groups with the XRJoint poses\n\t\t\t\t\t\tconst jointPose = frame.getJointPose( inputSource.hand[ i ], referenceSpace );\n\t\t\t\t\t\tconst joint = hand.joints[ i ];\n\n\t\t\t\t\t\tif ( jointPose !== null ) {\n\n\t\t\t\t\t\t\tjoint.matrix.fromArray( jointPose.transform.matrix );\n\t\t\t\t\t\t\tjoint.matrix.decompose( joint.position, joint.rotation, joint.scale );\n\t\t\t\t\t\t\tjoint.jointRadius = jointPose.radius;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tjoint.visible = jointPose !== null;\n\n\t\t\t\t\t\t// Custom events\n\n\t\t\t\t\t\t// Check pinch\n\t\t\t\t\t\tconst indexTip = hand.joints[ window.XRHand.INDEX_PHALANX_TIP ];\n\t\t\t\t\t\tconst thumbTip = hand.joints[ window.XRHand.THUMB_PHALANX_TIP ];\n\t\t\t\t\t\tconst distance = indexTip.position.distanceTo( thumbTip.position );\n\n\t\t\t\t\t\tconst distanceToPinch = 0.02;\n\t\t\t\t\t\tconst threshold = 0.005;\n\n\t\t\t\t\t\tif ( hand.inputState.pinching && distance > distanceToPinch + threshold ) {\n\n\t\t\t\t\t\t\thand.inputState.pinching = false;\n\t\t\t\t\t\t\tthis.dispatchEvent( {\n\t\t\t\t\t\t\t\ttype: 'pinchend',\n\t\t\t\t\t\t\t\thandedness: inputSource.handedness,\n\t\t\t\t\t\t\t\ttarget: this\n\t\t\t\t\t\t\t} );\n\n\t\t\t\t\t\t} else if ( ! hand.inputState.pinching && distance <= distanceToPinch - threshold ) {\n\n\t\t\t\t\t\t\thand.inputState.pinching = true;\n\t\t\t\t\t\t\tthis.dispatchEvent( {\n\t\t\t\t\t\t\t\ttype: 'pinchstart',\n\t\t\t\t\t\t\t\thandedness: inputSource.handedness,\n\t\t\t\t\t\t\t\ttarget: this\n\t\t\t\t\t\t\t} );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tif ( targetRay !== null ) {\n\n\t\t\t\t\tinputPose = frame.getPose( inputSource.targetRaySpace, referenceSpace );\n\n\t\t\t\t\tif ( inputPose !== null ) {\n\n\t\t\t\t\t\ttargetRay.matrix.fromArray( inputPose.transform.matrix );\n\t\t\t\t\t\ttargetRay.matrix.decompose( targetRay.position, targetRay.rotation, targetRay.scale );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tif ( grip !== null && inputSource.gripSpace ) {\n\n\t\t\t\t\tgripPose = frame.getPose( inputSource.gripSpace, referenceSpace );\n\n\t\t\t\t\tif ( gripPose !== null ) {\n\n\t\t\t\t\t\tgrip.matrix.fromArray( gripPose.transform.matrix );\n\t\t\t\t\t\tgrip.matrix.decompose( grip.position, grip.rotation, grip.scale );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( targetRay !== null ) {\n\n\t\t\ttargetRay.visible = ( inputPose !== null );\n\n\t\t}\n\n\t\tif ( grip !== null ) {\n\n\t\t\tgrip.visible = ( gripPose !== null );\n\n\t\t}\n\n\t\tif ( hand !== null ) {\n\n\t\t\thand.visible = ( handPose !== null );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n} );\n\nfunction WebXRManager( renderer, gl ) {\n\n\tconst scope = this;\n\n\tlet session = null;\n\n\tlet framebufferScaleFactor = 1.0;\n\n\tlet referenceSpace = null;\n\tlet referenceSpaceType = 'local-floor';\n\n\tlet pose = null;\n\n\tconst controllers = [];\n\tconst inputSourcesMap = new Map();\n\n\t//\n\n\tconst cameraL = new PerspectiveCamera();\n\tcameraL.layers.enable( 1 );\n\tcameraL.viewport = new Vector4();\n\n\tconst cameraR = new PerspectiveCamera();\n\tcameraR.layers.enable( 2 );\n\tcameraR.viewport = new Vector4();\n\n\tconst cameras = [ cameraL, cameraR ];\n\n\tconst cameraVR = new ArrayCamera();\n\tcameraVR.layers.enable( 1 );\n\tcameraVR.layers.enable( 2 );\n\n\tlet _currentDepthNear = null;\n\tlet _currentDepthFar = null;\n\n\t//\n\n\tthis.enabled = false;\n\n\tthis.isPresenting = false;\n\n\tthis.getController = function ( index ) {\n\n\t\tlet controller = controllers[ index ];\n\n\t\tif ( controller === undefined ) {\n\n\t\t\tcontroller = new WebXRController();\n\t\t\tcontrollers[ index ] = controller;\n\n\t\t}\n\n\t\treturn controller.getTargetRaySpace();\n\n\t};\n\n\tthis.getControllerGrip = function ( index ) {\n\n\t\tlet controller = controllers[ index ];\n\n\t\tif ( controller === undefined ) {\n\n\t\t\tcontroller = new WebXRController();\n\t\t\tcontrollers[ index ] = controller;\n\n\t\t}\n\n\t\treturn controller.getGripSpace();\n\n\t};\n\n\tthis.getHand = function ( index ) {\n\n\t\tlet controller = controllers[ index ];\n\n\t\tif ( controller === undefined ) {\n\n\t\t\tcontroller = new WebXRController();\n\t\t\tcontrollers[ index ] = controller;\n\n\t\t}\n\n\t\treturn controller.getHandSpace();\n\n\t};\n\n\t//\n\n\tfunction onSessionEvent( event ) {\n\n\t\tconst controller = inputSourcesMap.get( event.inputSource );\n\n\t\tif ( controller ) {\n\n\t\t\tcontroller.dispatchEvent( { type: event.type, data: event.inputSource } );\n\n\t\t}\n\n\t}\n\n\tfunction onSessionEnd() {\n\n\t\tinputSourcesMap.forEach( function ( controller, inputSource ) {\n\n\t\t\tcontroller.disconnect( inputSource );\n\n\t\t} );\n\n\t\tinputSourcesMap.clear();\n\n\t\t//\n\n\t\trenderer.setFramebuffer( null );\n\t\trenderer.setRenderTarget( renderer.getRenderTarget() ); // Hack #15830\n\t\tanimation.stop();\n\n\t\tscope.isPresenting = false;\n\n\t\tscope.dispatchEvent( { type: 'sessionend' } );\n\n\t}\n\n\tfunction onRequestReferenceSpace( value ) {\n\n\t\treferenceSpace = value;\n\n\t\tanimation.setContext( session );\n\t\tanimation.start();\n\n\t\tscope.isPresenting = true;\n\n\t\tscope.dispatchEvent( { type: 'sessionstart' } );\n\n\t}\n\n\tthis.setFramebufferScaleFactor = function ( value ) {\n\n\t\tframebufferScaleFactor = value;\n\n\t\tif ( scope.isPresenting === true ) {\n\n\t\t\tconsole.warn( 'THREE.WebXRManager: Cannot change framebuffer scale while presenting.' );\n\n\t\t}\n\n\t};\n\n\tthis.setReferenceSpaceType = function ( value ) {\n\n\t\treferenceSpaceType = value;\n\n\t\tif ( scope.isPresenting === true ) {\n\n\t\t\tconsole.warn( 'THREE.WebXRManager: Cannot change reference space type while presenting.' );\n\n\t\t}\n\n\t};\n\n\tthis.getReferenceSpace = function () {\n\n\t\treturn referenceSpace;\n\n\t};\n\n\tthis.getSession = function () {\n\n\t\treturn session;\n\n\t};\n\n\tthis.setSession = function ( value ) {\n\n\t\tsession = value;\n\n\t\tif ( session !== null ) {\n\n\t\t\tsession.addEventListener( 'select', onSessionEvent );\n\t\t\tsession.addEventListener( 'selectstart', onSessionEvent );\n\t\t\tsession.addEventListener( 'selectend', onSessionEvent );\n\t\t\tsession.addEventListener( 'squeeze', onSessionEvent );\n\t\t\tsession.addEventListener( 'squeezestart', onSessionEvent );\n\t\t\tsession.addEventListener( 'squeezeend', onSessionEvent );\n\t\t\tsession.addEventListener( 'end', onSessionEnd );\n\n\t\t\tconst attributes = gl.getContextAttributes();\n\n\t\t\tif ( attributes.xrCompatible !== true ) {\n\n\t\t\t\tgl.makeXRCompatible();\n\n\t\t\t}\n\n\t\t\tconst layerInit = {\n\t\t\t\tantialias: attributes.antialias,\n\t\t\t\talpha: attributes.alpha,\n\t\t\t\tdepth: attributes.depth,\n\t\t\t\tstencil: attributes.stencil,\n\t\t\t\tframebufferScaleFactor: framebufferScaleFactor\n\t\t\t};\n\n\t\t\t// eslint-disable-next-line no-undef\n\t\t\tconst baseLayer = new XRWebGLLayer( session, gl, layerInit );\n\n\t\t\tsession.updateRenderState( { baseLayer: baseLayer } );\n\n\t\t\tsession.requestReferenceSpace( referenceSpaceType ).then( onRequestReferenceSpace );\n\n\t\t\t//\n\n\t\t\tsession.addEventListener( 'inputsourceschange', updateInputSources );\n\n\t\t}\n\n\t};\n\n\tfunction updateInputSources( event ) {\n\n\t\tconst inputSources = session.inputSources;\n\n\t\t// Assign inputSources to available controllers\n\n\t\tfor ( let i = 0; i < controllers.length; i ++ ) {\n\n\t\t\tinputSourcesMap.set( inputSources[ i ], controllers[ i ] );\n\n\t\t}\n\n\t\t// Notify disconnected\n\n\t\tfor ( let i = 0; i < event.removed.length; i ++ ) {\n\n\t\t\tconst inputSource = event.removed[ i ];\n\t\t\tconst controller = inputSourcesMap.get( inputSource );\n\n\t\t\tif ( controller ) {\n\n\t\t\t\tcontroller.dispatchEvent( { type: 'disconnected', data: inputSource } );\n\t\t\t\tinputSourcesMap.delete( inputSource );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// Notify connected\n\n\t\tfor ( let i = 0; i < event.added.length; i ++ ) {\n\n\t\t\tconst inputSource = event.added[ i ];\n\t\t\tconst controller = inputSourcesMap.get( inputSource );\n\n\t\t\tif ( controller ) {\n\n\t\t\t\tcontroller.dispatchEvent( { type: 'connected', data: inputSource } );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\t//\n\n\tconst cameraLPos = new Vector3();\n\tconst cameraRPos = new Vector3();\n\n\t/**\n\t * Assumes 2 cameras that are parallel and share an X-axis, and that\n\t * the cameras' projection and world matrices have already been set.\n\t * And that near and far planes are identical for both cameras.\n\t * Visualization of this technique: https://computergraphics.stackexchange.com/a/4765\n\t */\n\tfunction setProjectionFromUnion( camera, cameraL, cameraR ) {\n\n\t\tcameraLPos.setFromMatrixPosition( cameraL.matrixWorld );\n\t\tcameraRPos.setFromMatrixPosition( cameraR.matrixWorld );\n\n\t\tconst ipd = cameraLPos.distanceTo( cameraRPos );\n\n\t\tconst projL = cameraL.projectionMatrix.elements;\n\t\tconst projR = cameraR.projectionMatrix.elements;\n\n\t\t// VR systems will have identical far and near planes, and\n\t\t// most likely identical top and bottom frustum extents.\n\t\t// Use the left camera for these values.\n\t\tconst near = projL[ 14 ] / ( projL[ 10 ] - 1 );\n\t\tconst far = projL[ 14 ] / ( projL[ 10 ] + 1 );\n\t\tconst topFov = ( projL[ 9 ] + 1 ) / projL[ 5 ];\n\t\tconst bottomFov = ( projL[ 9 ] - 1 ) / projL[ 5 ];\n\n\t\tconst leftFov = ( projL[ 8 ] - 1 ) / projL[ 0 ];\n\t\tconst rightFov = ( projR[ 8 ] + 1 ) / projR[ 0 ];\n\t\tconst left = near * leftFov;\n\t\tconst right = near * rightFov;\n\n\t\t// Calculate the new camera's position offset from the\n\t\t// left camera. xOffset should be roughly half `ipd`.\n\t\tconst zOffset = ipd / ( - leftFov + rightFov );\n\t\tconst xOffset = zOffset * - leftFov;\n\n\t\t// TODO: Better way to apply this offset?\n\t\tcameraL.matrixWorld.decompose( camera.position, camera.quaternion, camera.scale );\n\t\tcamera.translateX( xOffset );\n\t\tcamera.translateZ( zOffset );\n\t\tcamera.matrixWorld.compose( camera.position, camera.quaternion, camera.scale );\n\t\tcamera.matrixWorldInverse.copy( camera.matrixWorld ).invert();\n\n\t\t// Find the union of the frustum values of the cameras and scale\n\t\t// the values so that the near plane's position does not change in world space,\n\t\t// although must now be relative to the new union camera.\n\t\tconst near2 = near + zOffset;\n\t\tconst far2 = far + zOffset;\n\t\tconst left2 = left - xOffset;\n\t\tconst right2 = right + ( ipd - xOffset );\n\t\tconst top2 = topFov * far / far2 * near2;\n\t\tconst bottom2 = bottomFov * far / far2 * near2;\n\n\t\tcamera.projectionMatrix.makePerspective( left2, right2, top2, bottom2, near2, far2 );\n\n\t}\n\n\tfunction updateCamera( camera, parent ) {\n\n\t\tif ( parent === null ) {\n\n\t\t\tcamera.matrixWorld.copy( camera.matrix );\n\n\t\t} else {\n\n\t\t\tcamera.matrixWorld.multiplyMatrices( parent.matrixWorld, camera.matrix );\n\n\t\t}\n\n\t\tcamera.matrixWorldInverse.copy( camera.matrixWorld ).invert();\n\n\t}\n\n\tthis.getCamera = function ( camera ) {\n\n\t\tcameraVR.near = cameraR.near = cameraL.near = camera.near;\n\t\tcameraVR.far = cameraR.far = cameraL.far = camera.far;\n\n\t\tif ( _currentDepthNear !== cameraVR.near || _currentDepthFar !== cameraVR.far ) {\n\n\t\t\t// Note that the new renderState won't apply until the next frame. See #18320\n\n\t\t\tsession.updateRenderState( {\n\t\t\t\tdepthNear: cameraVR.near,\n\t\t\t\tdepthFar: cameraVR.far\n\t\t\t} );\n\n\t\t\t_currentDepthNear = cameraVR.near;\n\t\t\t_currentDepthFar = cameraVR.far;\n\n\t\t}\n\n\t\tconst parent = camera.parent;\n\t\tconst cameras = cameraVR.cameras;\n\n\t\tupdateCamera( cameraVR, parent );\n\n\t\tfor ( let i = 0; i < cameras.length; i ++ ) {\n\n\t\t\tupdateCamera( cameras[ i ], parent );\n\n\t\t}\n\n\t\t// update camera and its children\n\n\t\tcamera.matrixWorld.copy( cameraVR.matrixWorld );\n\n\t\tconst children = camera.children;\n\n\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\tchildren[ i ].updateMatrixWorld( true );\n\n\t\t}\n\n\t\t// update projection matrix for proper view frustum culling\n\n\t\tif ( cameras.length === 2 ) {\n\n\t\t\tsetProjectionFromUnion( cameraVR, cameraL, cameraR );\n\n\t\t} else {\n\n\t\t\t// assume single camera setup (AR)\n\n\t\t\tcameraVR.projectionMatrix.copy( cameraL.projectionMatrix );\n\n\t\t}\n\n\t\treturn cameraVR;\n\n\t};\n\n\t// Animation Loop\n\n\tlet onAnimationFrameCallback = null;\n\n\tfunction onAnimationFrame( time, frame ) {\n\n\t\tpose = frame.getViewerPose( referenceSpace );\n\n\t\tif ( pose !== null ) {\n\n\t\t\tconst views = pose.views;\n\t\t\tconst baseLayer = session.renderState.baseLayer;\n\n\t\t\trenderer.setFramebuffer( baseLayer.framebuffer );\n\n\t\t\tlet cameraVRNeedsUpdate = false;\n\n\t\t\t// check if it's necessary to rebuild cameraVR's camera list\n\n\t\t\tif ( views.length !== cameraVR.cameras.length ) {\n\n\t\t\t\tcameraVR.cameras.length = 0;\n\t\t\t\tcameraVRNeedsUpdate = true;\n\n\t\t\t}\n\n\t\t\tfor ( let i = 0; i < views.length; i ++ ) {\n\n\t\t\t\tconst view = views[ i ];\n\t\t\t\tconst viewport = baseLayer.getViewport( view );\n\n\t\t\t\tconst camera = cameras[ i ];\n\t\t\t\tcamera.matrix.fromArray( view.transform.matrix );\n\t\t\t\tcamera.projectionMatrix.fromArray( view.projectionMatrix );\n\t\t\t\tcamera.viewport.set( viewport.x, viewport.y, viewport.width, viewport.height );\n\n\t\t\t\tif ( i === 0 ) {\n\n\t\t\t\t\tcameraVR.matrix.copy( camera.matrix );\n\n\t\t\t\t}\n\n\t\t\t\tif ( cameraVRNeedsUpdate === true ) {\n\n\t\t\t\t\tcameraVR.cameras.push( camera );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\t//\n\n\t\tconst inputSources = session.inputSources;\n\n\t\tfor ( let i = 0; i < controllers.length; i ++ ) {\n\n\t\t\tconst controller = controllers[ i ];\n\t\t\tconst inputSource = inputSources[ i ];\n\n\t\t\tcontroller.update( inputSource, frame, referenceSpace );\n\n\t\t}\n\n\t\tif ( onAnimationFrameCallback ) onAnimationFrameCallback( time, frame );\n\n\t}\n\n\tconst animation = new WebGLAnimation();\n\tanimation.setAnimationLoop( onAnimationFrame );\n\n\tthis.setAnimationLoop = function ( callback ) {\n\n\t\tonAnimationFrameCallback = callback;\n\n\t};\n\n\tthis.dispose = function () {};\n\n}\n\nObject.assign( WebXRManager.prototype, EventDispatcher.prototype );\n\nfunction WebGLMaterials( properties ) {\n\n\tfunction refreshFogUniforms( uniforms, fog ) {\n\n\t\tuniforms.fogColor.value.copy( fog.color );\n\n\t\tif ( fog.isFog ) {\n\n\t\t\tuniforms.fogNear.value = fog.near;\n\t\t\tuniforms.fogFar.value = fog.far;\n\n\t\t} else if ( fog.isFogExp2 ) {\n\n\t\t\tuniforms.fogDensity.value = fog.density;\n\n\t\t}\n\n\t}\n\n\tfunction refreshMaterialUniforms( uniforms, material, pixelRatio, height ) {\n\n\t\tif ( material.isMeshBasicMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\n\t\t} else if ( material.isMeshLambertMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\t\t\trefreshUniformsLambert( uniforms, material );\n\n\t\t} else if ( material.isMeshToonMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\t\t\trefreshUniformsToon( uniforms, material );\n\n\t\t} else if ( material.isMeshPhongMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\t\t\trefreshUniformsPhong( uniforms, material );\n\n\t\t} else if ( material.isMeshStandardMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\n\t\t\tif ( material.isMeshPhysicalMaterial ) {\n\n\t\t\t\trefreshUniformsPhysical( uniforms, material );\n\n\t\t\t} else {\n\n\t\t\t\trefreshUniformsStandard( uniforms, material );\n\n\t\t\t}\n\n\t\t} else if ( material.isMeshMatcapMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\t\t\trefreshUniformsMatcap( uniforms, material );\n\n\t\t} else if ( material.isMeshDepthMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\t\t\trefreshUniformsDepth( uniforms, material );\n\n\t\t} else if ( material.isMeshDistanceMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\t\t\trefreshUniformsDistance( uniforms, material );\n\n\t\t} else if ( material.isMeshNormalMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\t\t\trefreshUniformsNormal( uniforms, material );\n\n\t\t} else if ( material.isLineBasicMaterial ) {\n\n\t\t\trefreshUniformsLine( uniforms, material );\n\n\t\t\tif ( material.isLineDashedMaterial ) {\n\n\t\t\t\trefreshUniformsDash( uniforms, material );\n\n\t\t\t}\n\n\t\t} else if ( material.isPointsMaterial ) {\n\n\t\t\trefreshUniformsPoints( uniforms, material, pixelRatio, height );\n\n\t\t} else if ( material.isSpriteMaterial ) {\n\n\t\t\trefreshUniformsSprites( uniforms, material );\n\n\t\t} else if ( material.isShadowMaterial ) {\n\n\t\t\tuniforms.color.value.copy( material.color );\n\t\t\tuniforms.opacity.value = material.opacity;\n\n\t\t} else if ( material.isShaderMaterial ) {\n\n\t\t\tmaterial.uniformsNeedUpdate = false; // #15581\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsCommon( uniforms, material ) {\n\n\t\tuniforms.opacity.value = material.opacity;\n\n\t\tif ( material.color ) {\n\n\t\t\tuniforms.diffuse.value.copy( material.color );\n\n\t\t}\n\n\t\tif ( material.emissive ) {\n\n\t\t\tuniforms.emissive.value.copy( material.emissive ).multiplyScalar( material.emissiveIntensity );\n\n\t\t}\n\n\t\tif ( material.map ) {\n\n\t\t\tuniforms.map.value = material.map;\n\n\t\t}\n\n\t\tif ( material.alphaMap ) {\n\n\t\t\tuniforms.alphaMap.value = material.alphaMap;\n\n\t\t}\n\n\t\tif ( material.specularMap ) {\n\n\t\t\tuniforms.specularMap.value = material.specularMap;\n\n\t\t}\n\n\t\tconst envMap = properties.get( material ).envMap;\n\n\t\tif ( envMap ) {\n\n\t\t\tuniforms.envMap.value = envMap;\n\n\t\t\tuniforms.flipEnvMap.value = ( envMap.isCubeTexture && envMap._needsFlipEnvMap ) ? - 1 : 1;\n\n\t\t\tuniforms.reflectivity.value = material.reflectivity;\n\t\t\tuniforms.refractionRatio.value = material.refractionRatio;\n\n\t\t\tconst maxMipLevel = properties.get( envMap ).__maxMipLevel;\n\n\t\t\tif ( maxMipLevel !== undefined ) {\n\n\t\t\t\tuniforms.maxMipLevel.value = maxMipLevel;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( material.lightMap ) {\n\n\t\t\tuniforms.lightMap.value = material.lightMap;\n\t\t\tuniforms.lightMapIntensity.value = material.lightMapIntensity;\n\n\t\t}\n\n\t\tif ( material.aoMap ) {\n\n\t\t\tuniforms.aoMap.value = material.aoMap;\n\t\t\tuniforms.aoMapIntensity.value = material.aoMapIntensity;\n\n\t\t}\n\n\t\t// uv repeat and offset setting priorities\n\t\t// 1. color map\n\t\t// 2. specular map\n\t\t// 3. displacementMap map\n\t\t// 4. normal map\n\t\t// 5. bump map\n\t\t// 6. roughnessMap map\n\t\t// 7. metalnessMap map\n\t\t// 8. alphaMap map\n\t\t// 9. emissiveMap map\n\t\t// 10. clearcoat map\n\t\t// 11. clearcoat normal map\n\t\t// 12. clearcoat roughnessMap map\n\n\t\tlet uvScaleMap;\n\n\t\tif ( material.map ) {\n\n\t\t\tuvScaleMap = material.map;\n\n\t\t} else if ( material.specularMap ) {\n\n\t\t\tuvScaleMap = material.specularMap;\n\n\t\t} else if ( material.displacementMap ) {\n\n\t\t\tuvScaleMap = material.displacementMap;\n\n\t\t} else if ( material.normalMap ) {\n\n\t\t\tuvScaleMap = material.normalMap;\n\n\t\t} else if ( material.bumpMap ) {\n\n\t\t\tuvScaleMap = material.bumpMap;\n\n\t\t} else if ( material.roughnessMap ) {\n\n\t\t\tuvScaleMap = material.roughnessMap;\n\n\t\t} else if ( material.metalnessMap ) {\n\n\t\t\tuvScaleMap = material.metalnessMap;\n\n\t\t} else if ( material.alphaMap ) {\n\n\t\t\tuvScaleMap = material.alphaMap;\n\n\t\t} else if ( material.emissiveMap ) {\n\n\t\t\tuvScaleMap = material.emissiveMap;\n\n\t\t} else if ( material.clearcoatMap ) {\n\n\t\t\tuvScaleMap = material.clearcoatMap;\n\n\t\t} else if ( material.clearcoatNormalMap ) {\n\n\t\t\tuvScaleMap = material.clearcoatNormalMap;\n\n\t\t} else if ( material.clearcoatRoughnessMap ) {\n\n\t\t\tuvScaleMap = material.clearcoatRoughnessMap;\n\n\t\t}\n\n\t\tif ( uvScaleMap !== undefined ) {\n\n\t\t\t// backwards compatibility\n\t\t\tif ( uvScaleMap.isWebGLRenderTarget ) {\n\n\t\t\t\tuvScaleMap = uvScaleMap.texture;\n\n\t\t\t}\n\n\t\t\tif ( uvScaleMap.matrixAutoUpdate === true ) {\n\n\t\t\t\tuvScaleMap.updateMatrix();\n\n\t\t\t}\n\n\t\t\tuniforms.uvTransform.value.copy( uvScaleMap.matrix );\n\n\t\t}\n\n\t\t// uv repeat and offset setting priorities for uv2\n\t\t// 1. ao map\n\t\t// 2. light map\n\n\t\tlet uv2ScaleMap;\n\n\t\tif ( material.aoMap ) {\n\n\t\t\tuv2ScaleMap = material.aoMap;\n\n\t\t} else if ( material.lightMap ) {\n\n\t\t\tuv2ScaleMap = material.lightMap;\n\n\t\t}\n\n\t\tif ( uv2ScaleMap !== undefined ) {\n\n\t\t\t// backwards compatibility\n\t\t\tif ( uv2ScaleMap.isWebGLRenderTarget ) {\n\n\t\t\t\tuv2ScaleMap = uv2ScaleMap.texture;\n\n\t\t\t}\n\n\t\t\tif ( uv2ScaleMap.matrixAutoUpdate === true ) {\n\n\t\t\t\tuv2ScaleMap.updateMatrix();\n\n\t\t\t}\n\n\t\t\tuniforms.uv2Transform.value.copy( uv2ScaleMap.matrix );\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsLine( uniforms, material ) {\n\n\t\tuniforms.diffuse.value.copy( material.color );\n\t\tuniforms.opacity.value = material.opacity;\n\n\t}\n\n\tfunction refreshUniformsDash( uniforms, material ) {\n\n\t\tuniforms.dashSize.value = material.dashSize;\n\t\tuniforms.totalSize.value = material.dashSize + material.gapSize;\n\t\tuniforms.scale.value = material.scale;\n\n\t}\n\n\tfunction refreshUniformsPoints( uniforms, material, pixelRatio, height ) {\n\n\t\tuniforms.diffuse.value.copy( material.color );\n\t\tuniforms.opacity.value = material.opacity;\n\t\tuniforms.size.value = material.size * pixelRatio;\n\t\tuniforms.scale.value = height * 0.5;\n\n\t\tif ( material.map ) {\n\n\t\t\tuniforms.map.value = material.map;\n\n\t\t}\n\n\t\tif ( material.alphaMap ) {\n\n\t\t\tuniforms.alphaMap.value = material.alphaMap;\n\n\t\t}\n\n\t\t// uv repeat and offset setting priorities\n\t\t// 1. color map\n\t\t// 2. alpha map\n\n\t\tlet uvScaleMap;\n\n\t\tif ( material.map ) {\n\n\t\t\tuvScaleMap = material.map;\n\n\t\t} else if ( material.alphaMap ) {\n\n\t\t\tuvScaleMap = material.alphaMap;\n\n\t\t}\n\n\t\tif ( uvScaleMap !== undefined ) {\n\n\t\t\tif ( uvScaleMap.matrixAutoUpdate === true ) {\n\n\t\t\t\tuvScaleMap.updateMatrix();\n\n\t\t\t}\n\n\t\t\tuniforms.uvTransform.value.copy( uvScaleMap.matrix );\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsSprites( uniforms, material ) {\n\n\t\tuniforms.diffuse.value.copy( material.color );\n\t\tuniforms.opacity.value = material.opacity;\n\t\tuniforms.rotation.value = material.rotation;\n\n\t\tif ( material.map ) {\n\n\t\t\tuniforms.map.value = material.map;\n\n\t\t}\n\n\t\tif ( material.alphaMap ) {\n\n\t\t\tuniforms.alphaMap.value = material.alphaMap;\n\n\t\t}\n\n\t\t// uv repeat and offset setting priorities\n\t\t// 1. color map\n\t\t// 2. alpha map\n\n\t\tlet uvScaleMap;\n\n\t\tif ( material.map ) {\n\n\t\t\tuvScaleMap = material.map;\n\n\t\t} else if ( material.alphaMap ) {\n\n\t\t\tuvScaleMap = material.alphaMap;\n\n\t\t}\n\n\t\tif ( uvScaleMap !== undefined ) {\n\n\t\t\tif ( uvScaleMap.matrixAutoUpdate === true ) {\n\n\t\t\t\tuvScaleMap.updateMatrix();\n\n\t\t\t}\n\n\t\t\tuniforms.uvTransform.value.copy( uvScaleMap.matrix );\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsLambert( uniforms, material ) {\n\n\t\tif ( material.emissiveMap ) {\n\n\t\t\tuniforms.emissiveMap.value = material.emissiveMap;\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsPhong( uniforms, material ) {\n\n\t\tuniforms.specular.value.copy( material.specular );\n\t\tuniforms.shininess.value = Math.max( material.shininess, 1e-4 ); // to prevent pow( 0.0, 0.0 )\n\n\t\tif ( material.emissiveMap ) {\n\n\t\t\tuniforms.emissiveMap.value = material.emissiveMap;\n\n\t\t}\n\n\t\tif ( material.bumpMap ) {\n\n\t\t\tuniforms.bumpMap.value = material.bumpMap;\n\t\t\tuniforms.bumpScale.value = material.bumpScale;\n\t\t\tif ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;\n\n\t\t}\n\n\t\tif ( material.normalMap ) {\n\n\t\t\tuniforms.normalMap.value = material.normalMap;\n\t\t\tuniforms.normalScale.value.copy( material.normalScale );\n\t\t\tif ( material.side === BackSide ) uniforms.normalScale.value.negate();\n\n\t\t}\n\n\t\tif ( material.displacementMap ) {\n\n\t\t\tuniforms.displacementMap.value = material.displacementMap;\n\t\t\tuniforms.displacementScale.value = material.displacementScale;\n\t\t\tuniforms.displacementBias.value = material.displacementBias;\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsToon( uniforms, material ) {\n\n\t\tif ( material.gradientMap ) {\n\n\t\t\tuniforms.gradientMap.value = material.gradientMap;\n\n\t\t}\n\n\t\tif ( material.emissiveMap ) {\n\n\t\t\tuniforms.emissiveMap.value = material.emissiveMap;\n\n\t\t}\n\n\t\tif ( material.bumpMap ) {\n\n\t\t\tuniforms.bumpMap.value = material.bumpMap;\n\t\t\tuniforms.bumpScale.value = material.bumpScale;\n\t\t\tif ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;\n\n\t\t}\n\n\t\tif ( material.normalMap ) {\n\n\t\t\tuniforms.normalMap.value = material.normalMap;\n\t\t\tuniforms.normalScale.value.copy( material.normalScale );\n\t\t\tif ( material.side === BackSide ) uniforms.normalScale.value.negate();\n\n\t\t}\n\n\t\tif ( material.displacementMap ) {\n\n\t\t\tuniforms.displacementMap.value = material.displacementMap;\n\t\t\tuniforms.displacementScale.value = material.displacementScale;\n\t\t\tuniforms.displacementBias.value = material.displacementBias;\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsStandard( uniforms, material ) {\n\n\t\tuniforms.roughness.value = material.roughness;\n\t\tuniforms.metalness.value = material.metalness;\n\n\t\tif ( material.roughnessMap ) {\n\n\t\t\tuniforms.roughnessMap.value = material.roughnessMap;\n\n\t\t}\n\n\t\tif ( material.metalnessMap ) {\n\n\t\t\tuniforms.metalnessMap.value = material.metalnessMap;\n\n\t\t}\n\n\t\tif ( material.emissiveMap ) {\n\n\t\t\tuniforms.emissiveMap.value = material.emissiveMap;\n\n\t\t}\n\n\t\tif ( material.bumpMap ) {\n\n\t\t\tuniforms.bumpMap.value = material.bumpMap;\n\t\t\tuniforms.bumpScale.value = material.bumpScale;\n\t\t\tif ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;\n\n\t\t}\n\n\t\tif ( material.normalMap ) {\n\n\t\t\tuniforms.normalMap.value = material.normalMap;\n\t\t\tuniforms.normalScale.value.copy( material.normalScale );\n\t\t\tif ( material.side === BackSide ) uniforms.normalScale.value.negate();\n\n\t\t}\n\n\t\tif ( material.displacementMap ) {\n\n\t\t\tuniforms.displacementMap.value = material.displacementMap;\n\t\t\tuniforms.displacementScale.value = material.displacementScale;\n\t\t\tuniforms.displacementBias.value = material.displacementBias;\n\n\t\t}\n\n\t\tconst envMap = properties.get( material ).envMap;\n\n\t\tif ( envMap ) {\n\n\t\t\t//uniforms.envMap.value = material.envMap; // part of uniforms common\n\t\t\tuniforms.envMapIntensity.value = material.envMapIntensity;\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsPhysical( uniforms, material ) {\n\n\t\trefreshUniformsStandard( uniforms, material );\n\n\t\tuniforms.reflectivity.value = material.reflectivity; // also part of uniforms common\n\n\t\tuniforms.clearcoat.value = material.clearcoat;\n\t\tuniforms.clearcoatRoughness.value = material.clearcoatRoughness;\n\t\tif ( material.sheen ) uniforms.sheen.value.copy( material.sheen );\n\n\t\tif ( material.clearcoatMap ) {\n\n\t\t\tuniforms.clearcoatMap.value = material.clearcoatMap;\n\n\t\t}\n\n\t\tif ( material.clearcoatRoughnessMap ) {\n\n\t\t\tuniforms.clearcoatRoughnessMap.value = material.clearcoatRoughnessMap;\n\n\t\t}\n\n\t\tif ( material.clearcoatNormalMap ) {\n\n\t\t\tuniforms.clearcoatNormalScale.value.copy( material.clearcoatNormalScale );\n\t\t\tuniforms.clearcoatNormalMap.value = material.clearcoatNormalMap;\n\n\t\t\tif ( material.side === BackSide ) {\n\n\t\t\t\tuniforms.clearcoatNormalScale.value.negate();\n\n\t\t\t}\n\n\t\t}\n\n\t\tuniforms.transmission.value = material.transmission;\n\n\t\tif ( material.transmissionMap ) {\n\n\t\t\tuniforms.transmissionMap.value = material.transmissionMap;\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsMatcap( uniforms, material ) {\n\n\t\tif ( material.matcap ) {\n\n\t\t\tuniforms.matcap.value = material.matcap;\n\n\t\t}\n\n\t\tif ( material.bumpMap ) {\n\n\t\t\tuniforms.bumpMap.value = material.bumpMap;\n\t\t\tuniforms.bumpScale.value = material.bumpScale;\n\t\t\tif ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;\n\n\t\t}\n\n\t\tif ( material.normalMap ) {\n\n\t\t\tuniforms.normalMap.value = material.normalMap;\n\t\t\tuniforms.normalScale.value.copy( material.normalScale );\n\t\t\tif ( material.side === BackSide ) uniforms.normalScale.value.negate();\n\n\t\t}\n\n\t\tif ( material.displacementMap ) {\n\n\t\t\tuniforms.displacementMap.value = material.displacementMap;\n\t\t\tuniforms.displacementScale.value = material.displacementScale;\n\t\t\tuniforms.displacementBias.value = material.displacementBias;\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsDepth( uniforms, material ) {\n\n\t\tif ( material.displacementMap ) {\n\n\t\t\tuniforms.displacementMap.value = material.displacementMap;\n\t\t\tuniforms.displacementScale.value = material.displacementScale;\n\t\t\tuniforms.displacementBias.value = material.displacementBias;\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsDistance( uniforms, material ) {\n\n\t\tif ( material.displacementMap ) {\n\n\t\t\tuniforms.displacementMap.value = material.displacementMap;\n\t\t\tuniforms.displacementScale.value = material.displacementScale;\n\t\t\tuniforms.displacementBias.value = material.displacementBias;\n\n\t\t}\n\n\t\tuniforms.referencePosition.value.copy( material.referencePosition );\n\t\tuniforms.nearDistance.value = material.nearDistance;\n\t\tuniforms.farDistance.value = material.farDistance;\n\n\t}\n\n\tfunction refreshUniformsNormal( uniforms, material ) {\n\n\t\tif ( material.bumpMap ) {\n\n\t\t\tuniforms.bumpMap.value = material.bumpMap;\n\t\t\tuniforms.bumpScale.value = material.bumpScale;\n\t\t\tif ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;\n\n\t\t}\n\n\t\tif ( material.normalMap ) {\n\n\t\t\tuniforms.normalMap.value = material.normalMap;\n\t\t\tuniforms.normalScale.value.copy( material.normalScale );\n\t\t\tif ( material.side === BackSide ) uniforms.normalScale.value.negate();\n\n\t\t}\n\n\t\tif ( material.displacementMap ) {\n\n\t\t\tuniforms.displacementMap.value = material.displacementMap;\n\t\t\tuniforms.displacementScale.value = material.displacementScale;\n\t\t\tuniforms.displacementBias.value = material.displacementBias;\n\n\t\t}\n\n\t}\n\n\treturn {\n\t\trefreshFogUniforms: refreshFogUniforms,\n\t\trefreshMaterialUniforms: refreshMaterialUniforms\n\t};\n\n}\n\nfunction createCanvasElement() {\n\n\tconst canvas = document.createElementNS( 'http://www.w3.org/1999/xhtml', 'canvas' );\n\tcanvas.style.display = 'block';\n\treturn canvas;\n\n}\n\nfunction WebGLRenderer( parameters ) {\n\n\tparameters = parameters || {};\n\n\tconst _canvas = parameters.canvas !== undefined ? parameters.canvas : createCanvasElement(),\n\t\t_context = parameters.context !== undefined ? parameters.context : null,\n\n\t\t_alpha = parameters.alpha !== undefined ? parameters.alpha : false,\n\t\t_depth = parameters.depth !== undefined ? parameters.depth : true,\n\t\t_stencil = parameters.stencil !== undefined ? parameters.stencil : true,\n\t\t_antialias = parameters.antialias !== undefined ? parameters.antialias : false,\n\t\t_premultipliedAlpha = parameters.premultipliedAlpha !== undefined ? parameters.premultipliedAlpha : true,\n\t\t_preserveDrawingBuffer = parameters.preserveDrawingBuffer !== undefined ? parameters.preserveDrawingBuffer : false,\n\t\t_powerPreference = parameters.powerPreference !== undefined ? parameters.powerPreference : 'default',\n\t\t_failIfMajorPerformanceCaveat = parameters.failIfMajorPerformanceCaveat !== undefined ? parameters.failIfMajorPerformanceCaveat : false;\n\n\tlet currentRenderList = null;\n\tlet currentRenderState = null;\n\n\t// render() can be called from within a callback triggered by another render.\n\t// We track this so that the nested render call gets its state isolated from the parent render call.\n\n\tconst renderStateStack = [];\n\n\t// public properties\n\n\tthis.domElement = _canvas;\n\n\t// Debug configuration container\n\tthis.debug = {\n\n\t\t/**\n\t\t * Enables error checking and reporting when shader programs are being compiled\n\t\t * @type {boolean}\n\t\t */\n\t\tcheckShaderErrors: true\n\t};\n\n\t// clearing\n\n\tthis.autoClear = true;\n\tthis.autoClearColor = true;\n\tthis.autoClearDepth = true;\n\tthis.autoClearStencil = true;\n\n\t// scene graph\n\n\tthis.sortObjects = true;\n\n\t// user-defined clipping\n\n\tthis.clippingPlanes = [];\n\tthis.localClippingEnabled = false;\n\n\t// physically based shading\n\n\tthis.gammaFactor = 2.0;\t// for backwards compatibility\n\tthis.outputEncoding = LinearEncoding;\n\n\t// physical lights\n\n\tthis.physicallyCorrectLights = false;\n\n\t// tone mapping\n\n\tthis.toneMapping = NoToneMapping;\n\tthis.toneMappingExposure = 1.0;\n\n\t// morphs\n\n\tthis.maxMorphTargets = 8;\n\tthis.maxMorphNormals = 4;\n\n\t// internal properties\n\n\tconst _this = this;\n\n\tlet _isContextLost = false;\n\n\t// internal state cache\n\n\tlet _framebuffer = null;\n\n\tlet _currentActiveCubeFace = 0;\n\tlet _currentActiveMipmapLevel = 0;\n\tlet _currentRenderTarget = null;\n\tlet _currentFramebuffer = null;\n\tlet _currentMaterialId = - 1;\n\n\tlet _currentCamera = null;\n\n\tconst _currentViewport = new Vector4();\n\tconst _currentScissor = new Vector4();\n\tlet _currentScissorTest = null;\n\n\t//\n\n\tlet _width = _canvas.width;\n\tlet _height = _canvas.height;\n\n\tlet _pixelRatio = 1;\n\tlet _opaqueSort = null;\n\tlet _transparentSort = null;\n\n\tconst _viewport = new Vector4( 0, 0, _width, _height );\n\tconst _scissor = new Vector4( 0, 0, _width, _height );\n\tlet _scissorTest = false;\n\n\t// frustum\n\n\tconst _frustum = new Frustum();\n\n\t// clipping\n\n\tlet _clippingEnabled = false;\n\tlet _localClippingEnabled = false;\n\n\t// camera matrices cache\n\n\tconst _projScreenMatrix = new Matrix4();\n\n\tconst _vector3 = new Vector3();\n\n\tconst _emptyScene = { background: null, fog: null, environment: null, overrideMaterial: null, isScene: true };\n\n\tfunction getTargetPixelRatio() {\n\n\t\treturn _currentRenderTarget === null ? _pixelRatio : 1;\n\n\t}\n\n\t// initialize\n\n\tlet _gl = _context;\n\n\tfunction getContext( contextNames, contextAttributes ) {\n\n\t\tfor ( let i = 0; i < contextNames.length; i ++ ) {\n\n\t\t\tconst contextName = contextNames[ i ];\n\t\t\tconst context = _canvas.getContext( contextName, contextAttributes );\n\t\t\tif ( context !== null ) return context;\n\n\t\t}\n\n\t\treturn null;\n\n\t}\n\n\ttry {\n\n\t\tconst contextAttributes = {\n\t\t\talpha: _alpha,\n\t\t\tdepth: _depth,\n\t\t\tstencil: _stencil,\n\t\t\tantialias: _antialias,\n\t\t\tpremultipliedAlpha: _premultipliedAlpha,\n\t\t\tpreserveDrawingBuffer: _preserveDrawingBuffer,\n\t\t\tpowerPreference: _powerPreference,\n\t\t\tfailIfMajorPerformanceCaveat: _failIfMajorPerformanceCaveat\n\t\t};\n\n\t\t// event listeners must be registered before WebGL context is created, see #12753\n\n\t\t_canvas.addEventListener( 'webglcontextlost', onContextLost, false );\n\t\t_canvas.addEventListener( 'webglcontextrestored', onContextRestore, false );\n\n\t\tif ( _gl === null ) {\n\n\t\t\tconst contextNames = [ 'webgl2', 'webgl', 'experimental-webgl' ];\n\n\t\t\tif ( _this.isWebGL1Renderer === true ) {\n\n\t\t\t\tcontextNames.shift();\n\n\t\t\t}\n\n\t\t\t_gl = getContext( contextNames, contextAttributes );\n\n\t\t\tif ( _gl === null ) {\n\n\t\t\t\tif ( getContext( contextNames ) ) {\n\n\t\t\t\t\tthrow new Error( 'Error creating WebGL context with your selected attributes.' );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthrow new Error( 'Error creating WebGL context.' );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\t// Some experimental-webgl implementations do not have getShaderPrecisionFormat\n\n\t\tif ( _gl.getShaderPrecisionFormat === undefined ) {\n\n\t\t\t_gl.getShaderPrecisionFormat = function () {\n\n\t\t\t\treturn { 'rangeMin': 1, 'rangeMax': 1, 'precision': 1 };\n\n\t\t\t};\n\n\t\t}\n\n\t} catch ( error ) {\n\n\t\tconsole.error( 'THREE.WebGLRenderer: ' + error.message );\n\t\tthrow error;\n\n\t}\n\n\tlet extensions, capabilities, state, info;\n\tlet properties, textures, cubemaps, attributes, geometries, objects;\n\tlet programCache, materials, renderLists, renderStates, clipping;\n\n\tlet background, morphtargets, bufferRenderer, indexedBufferRenderer;\n\n\tlet utils, bindingStates;\n\n\tfunction initGLContext() {\n\n\t\textensions = new WebGLExtensions( _gl );\n\n\t\tcapabilities = new WebGLCapabilities( _gl, extensions, parameters );\n\n\t\tif ( capabilities.isWebGL2 === false ) {\n\n\t\t\textensions.get( 'WEBGL_depth_texture' );\n\t\t\textensions.get( 'OES_texture_float' );\n\t\t\textensions.get( 'OES_texture_half_float' );\n\t\t\textensions.get( 'OES_texture_half_float_linear' );\n\t\t\textensions.get( 'OES_standard_derivatives' );\n\t\t\textensions.get( 'OES_element_index_uint' );\n\t\t\textensions.get( 'OES_vertex_array_object' );\n\t\t\textensions.get( 'ANGLE_instanced_arrays' );\n\n\t\t}\n\n\t\textensions.get( 'OES_texture_float_linear' );\n\n\t\tutils = new WebGLUtils( _gl, extensions, capabilities );\n\n\t\tstate = new WebGLState( _gl, extensions, capabilities );\n\t\tstate.scissor( _currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ).floor() );\n\t\tstate.viewport( _currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ).floor() );\n\n\t\tinfo = new WebGLInfo( _gl );\n\t\tproperties = new WebGLProperties();\n\t\ttextures = new WebGLTextures( _gl, extensions, state, properties, capabilities, utils, info );\n\t\tcubemaps = new WebGLCubeMaps( _this );\n\t\tattributes = new WebGLAttributes( _gl, capabilities );\n\t\tbindingStates = new WebGLBindingStates( _gl, extensions, attributes, capabilities );\n\t\tgeometries = new WebGLGeometries( _gl, attributes, info, bindingStates );\n\t\tobjects = new WebGLObjects( _gl, geometries, attributes, info );\n\t\tmorphtargets = new WebGLMorphtargets( _gl );\n\t\tclipping = new WebGLClipping( properties );\n\t\tprogramCache = new WebGLPrograms( _this, cubemaps, extensions, capabilities, bindingStates, clipping );\n\t\tmaterials = new WebGLMaterials( properties );\n\t\trenderLists = new WebGLRenderLists( properties );\n\t\trenderStates = new WebGLRenderStates( extensions, capabilities );\n\t\tbackground = new WebGLBackground( _this, cubemaps, state, objects, _premultipliedAlpha );\n\n\t\tbufferRenderer = new WebGLBufferRenderer( _gl, extensions, info, capabilities );\n\t\tindexedBufferRenderer = new WebGLIndexedBufferRenderer( _gl, extensions, info, capabilities );\n\n\t\tinfo.programs = programCache.programs;\n\n\t\t_this.capabilities = capabilities;\n\t\t_this.extensions = extensions;\n\t\t_this.properties = properties;\n\t\t_this.renderLists = renderLists;\n\t\t_this.state = state;\n\t\t_this.info = info;\n\n\t}\n\n\tinitGLContext();\n\n\t// xr\n\n\tconst xr = new WebXRManager( _this, _gl );\n\n\tthis.xr = xr;\n\n\t// shadow map\n\n\tconst shadowMap = new WebGLShadowMap( _this, objects, capabilities.maxTextureSize );\n\n\tthis.shadowMap = shadowMap;\n\n\t// API\n\n\tthis.getContext = function () {\n\n\t\treturn _gl;\n\n\t};\n\n\tthis.getContextAttributes = function () {\n\n\t\treturn _gl.getContextAttributes();\n\n\t};\n\n\tthis.forceContextLoss = function () {\n\n\t\tconst extension = extensions.get( 'WEBGL_lose_context' );\n\t\tif ( extension ) extension.loseContext();\n\n\t};\n\n\tthis.forceContextRestore = function () {\n\n\t\tconst extension = extensions.get( 'WEBGL_lose_context' );\n\t\tif ( extension ) extension.restoreContext();\n\n\t};\n\n\tthis.getPixelRatio = function () {\n\n\t\treturn _pixelRatio;\n\n\t};\n\n\tthis.setPixelRatio = function ( value ) {\n\n\t\tif ( value === undefined ) return;\n\n\t\t_pixelRatio = value;\n\n\t\tthis.setSize( _width, _height, false );\n\n\t};\n\n\tthis.getSize = function ( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'WebGLRenderer: .getsize() now requires a Vector2 as an argument' );\n\n\t\t\ttarget = new Vector2();\n\n\t\t}\n\n\t\treturn target.set( _width, _height );\n\n\t};\n\n\tthis.setSize = function ( width, height, updateStyle ) {\n\n\t\tif ( xr.isPresenting ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: Can\\'t change size while VR device is presenting.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\t_width = width;\n\t\t_height = height;\n\n\t\t_canvas.width = Math.floor( width * _pixelRatio );\n\t\t_canvas.height = Math.floor( height * _pixelRatio );\n\n\t\tif ( updateStyle !== false ) {\n\n\t\t\t_canvas.style.width = width + 'px';\n\t\t\t_canvas.style.height = height + 'px';\n\n\t\t}\n\n\t\tthis.setViewport( 0, 0, width, height );\n\n\t};\n\n\tthis.getDrawingBufferSize = function ( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'WebGLRenderer: .getdrawingBufferSize() now requires a Vector2 as an argument' );\n\n\t\t\ttarget = new Vector2();\n\n\t\t}\n\n\t\treturn target.set( _width * _pixelRatio, _height * _pixelRatio ).floor();\n\n\t};\n\n\tthis.setDrawingBufferSize = function ( width, height, pixelRatio ) {\n\n\t\t_width = width;\n\t\t_height = height;\n\n\t\t_pixelRatio = pixelRatio;\n\n\t\t_canvas.width = Math.floor( width * pixelRatio );\n\t\t_canvas.height = Math.floor( height * pixelRatio );\n\n\t\tthis.setViewport( 0, 0, width, height );\n\n\t};\n\n\tthis.getCurrentViewport = function ( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'WebGLRenderer: .getCurrentViewport() now requires a Vector4 as an argument' );\n\n\t\t\ttarget = new Vector4();\n\n\t\t}\n\n\t\treturn target.copy( _currentViewport );\n\n\t};\n\n\tthis.getViewport = function ( target ) {\n\n\t\treturn target.copy( _viewport );\n\n\t};\n\n\tthis.setViewport = function ( x, y, width, height ) {\n\n\t\tif ( x.isVector4 ) {\n\n\t\t\t_viewport.set( x.x, x.y, x.z, x.w );\n\n\t\t} else {\n\n\t\t\t_viewport.set( x, y, width, height );\n\n\t\t}\n\n\t\tstate.viewport( _currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ).floor() );\n\n\t};\n\n\tthis.getScissor = function ( target ) {\n\n\t\treturn target.copy( _scissor );\n\n\t};\n\n\tthis.setScissor = function ( x, y, width, height ) {\n\n\t\tif ( x.isVector4 ) {\n\n\t\t\t_scissor.set( x.x, x.y, x.z, x.w );\n\n\t\t} else {\n\n\t\t\t_scissor.set( x, y, width, height );\n\n\t\t}\n\n\t\tstate.scissor( _currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ).floor() );\n\n\t};\n\n\tthis.getScissorTest = function () {\n\n\t\treturn _scissorTest;\n\n\t};\n\n\tthis.setScissorTest = function ( boolean ) {\n\n\t\tstate.setScissorTest( _scissorTest = boolean );\n\n\t};\n\n\tthis.setOpaqueSort = function ( method ) {\n\n\t\t_opaqueSort = method;\n\n\t};\n\n\tthis.setTransparentSort = function ( method ) {\n\n\t\t_transparentSort = method;\n\n\t};\n\n\t// Clearing\n\n\tthis.getClearColor = function ( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'WebGLRenderer: .getClearColor() now requires a Color as an argument' );\n\n\t\t\ttarget = new Color();\n\n\t\t}\n\n\t\treturn target.copy( background.getClearColor() );\n\n\t};\n\n\tthis.setClearColor = function () {\n\n\t\tbackground.setClearColor.apply( background, arguments );\n\n\t};\n\n\tthis.getClearAlpha = function () {\n\n\t\treturn background.getClearAlpha();\n\n\t};\n\n\tthis.setClearAlpha = function () {\n\n\t\tbackground.setClearAlpha.apply( background, arguments );\n\n\t};\n\n\tthis.clear = function ( color, depth, stencil ) {\n\n\t\tlet bits = 0;\n\n\t\tif ( color === undefined || color ) bits |= 16384;\n\t\tif ( depth === undefined || depth ) bits |= 256;\n\t\tif ( stencil === undefined || stencil ) bits |= 1024;\n\n\t\t_gl.clear( bits );\n\n\t};\n\n\tthis.clearColor = function () {\n\n\t\tthis.clear( true, false, false );\n\n\t};\n\n\tthis.clearDepth = function () {\n\n\t\tthis.clear( false, true, false );\n\n\t};\n\n\tthis.clearStencil = function () {\n\n\t\tthis.clear( false, false, true );\n\n\t};\n\n\t//\n\n\tthis.dispose = function () {\n\n\t\t_canvas.removeEventListener( 'webglcontextlost', onContextLost, false );\n\t\t_canvas.removeEventListener( 'webglcontextrestored', onContextRestore, false );\n\n\t\trenderLists.dispose();\n\t\trenderStates.dispose();\n\t\tproperties.dispose();\n\t\tcubemaps.dispose();\n\t\tobjects.dispose();\n\t\tbindingStates.dispose();\n\n\t\txr.dispose();\n\n\t\tanimation.stop();\n\n\t};\n\n\t// Events\n\n\tfunction onContextLost( event ) {\n\n\t\tevent.preventDefault();\n\n\t\tconsole.log( 'THREE.WebGLRenderer: Context Lost.' );\n\n\t\t_isContextLost = true;\n\n\t}\n\n\tfunction onContextRestore( /* event */ ) {\n\n\t\tconsole.log( 'THREE.WebGLRenderer: Context Restored.' );\n\n\t\t_isContextLost = false;\n\n\t\tinitGLContext();\n\n\t}\n\n\tfunction onMaterialDispose( event ) {\n\n\t\tconst material = event.target;\n\n\t\tmaterial.removeEventListener( 'dispose', onMaterialDispose );\n\n\t\tdeallocateMaterial( material );\n\n\t}\n\n\t// Buffer deallocation\n\n\tfunction deallocateMaterial( material ) {\n\n\t\treleaseMaterialProgramReference( material );\n\n\t\tproperties.remove( material );\n\n\t}\n\n\n\tfunction releaseMaterialProgramReference( material ) {\n\n\t\tconst programInfo = properties.get( material ).program;\n\n\t\tif ( programInfo !== undefined ) {\n\n\t\t\tprogramCache.releaseProgram( programInfo );\n\n\t\t}\n\n\t}\n\n\t// Buffer rendering\n\n\tfunction renderObjectImmediate( object, program ) {\n\n\t\tobject.render( function ( object ) {\n\n\t\t\t_this.renderBufferImmediate( object, program );\n\n\t\t} );\n\n\t}\n\n\tthis.renderBufferImmediate = function ( object, program ) {\n\n\t\tbindingStates.initAttributes();\n\n\t\tconst buffers = properties.get( object );\n\n\t\tif ( object.hasPositions && ! buffers.position ) buffers.position = _gl.createBuffer();\n\t\tif ( object.hasNormals && ! buffers.normal ) buffers.normal = _gl.createBuffer();\n\t\tif ( object.hasUvs && ! buffers.uv ) buffers.uv = _gl.createBuffer();\n\t\tif ( object.hasColors && ! buffers.color ) buffers.color = _gl.createBuffer();\n\n\t\tconst programAttributes = program.getAttributes();\n\n\t\tif ( object.hasPositions ) {\n\n\t\t\t_gl.bindBuffer( 34962, buffers.position );\n\t\t\t_gl.bufferData( 34962, object.positionArray, 35048 );\n\n\t\t\tbindingStates.enableAttribute( programAttributes.position );\n\t\t\t_gl.vertexAttribPointer( programAttributes.position, 3, 5126, false, 0, 0 );\n\n\t\t}\n\n\t\tif ( object.hasNormals ) {\n\n\t\t\t_gl.bindBuffer( 34962, buffers.normal );\n\t\t\t_gl.bufferData( 34962, object.normalArray, 35048 );\n\n\t\t\tbindingStates.enableAttribute( programAttributes.normal );\n\t\t\t_gl.vertexAttribPointer( programAttributes.normal, 3, 5126, false, 0, 0 );\n\n\t\t}\n\n\t\tif ( object.hasUvs ) {\n\n\t\t\t_gl.bindBuffer( 34962, buffers.uv );\n\t\t\t_gl.bufferData( 34962, object.uvArray, 35048 );\n\n\t\t\tbindingStates.enableAttribute( programAttributes.uv );\n\t\t\t_gl.vertexAttribPointer( programAttributes.uv, 2, 5126, false, 0, 0 );\n\n\t\t}\n\n\t\tif ( object.hasColors ) {\n\n\t\t\t_gl.bindBuffer( 34962, buffers.color );\n\t\t\t_gl.bufferData( 34962, object.colorArray, 35048 );\n\n\t\t\tbindingStates.enableAttribute( programAttributes.color );\n\t\t\t_gl.vertexAttribPointer( programAttributes.color, 3, 5126, false, 0, 0 );\n\n\t\t}\n\n\t\tbindingStates.disableUnusedAttributes();\n\n\t\t_gl.drawArrays( 4, 0, object.count );\n\n\t\tobject.count = 0;\n\n\t};\n\n\tthis.renderBufferDirect = function ( camera, scene, geometry, material, object, group ) {\n\n\t\tif ( scene === null ) scene = _emptyScene; // renderBufferDirect second parameter used to be fog (could be null)\n\n\t\tconst frontFaceCW = ( object.isMesh && object.matrixWorld.determinant() < 0 );\n\n\t\tconst program = setProgram( camera, scene, material, object );\n\n\t\tstate.setMaterial( material, frontFaceCW );\n\n\t\t//\n\n\t\tlet index = geometry.index;\n\t\tconst position = geometry.attributes.position;\n\n\t\t//\n\n\t\tif ( index === null ) {\n\n\t\t\tif ( position === undefined || position.count === 0 ) return;\n\n\t\t} else if ( index.count === 0 ) {\n\n\t\t\treturn;\n\n\t\t}\n\n\t\t//\n\n\t\tlet rangeFactor = 1;\n\n\t\tif ( material.wireframe === true ) {\n\n\t\t\tindex = geometries.getWireframeAttribute( geometry );\n\t\t\trangeFactor = 2;\n\n\t\t}\n\n\t\tif ( material.morphTargets || material.morphNormals ) {\n\n\t\t\tmorphtargets.update( object, geometry, material, program );\n\n\t\t}\n\n\t\tbindingStates.setup( object, material, program, geometry, index );\n\n\t\tlet attribute;\n\t\tlet renderer = bufferRenderer;\n\n\t\tif ( index !== null ) {\n\n\t\t\tattribute = attributes.get( index );\n\n\t\t\trenderer = indexedBufferRenderer;\n\t\t\trenderer.setIndex( attribute );\n\n\t\t}\n\n\t\t//\n\n\t\tconst dataCount = ( index !== null ) ? index.count : position.count;\n\n\t\tconst rangeStart = geometry.drawRange.start * rangeFactor;\n\t\tconst rangeCount = geometry.drawRange.count * rangeFactor;\n\n\t\tconst groupStart = group !== null ? group.start * rangeFactor : 0;\n\t\tconst groupCount = group !== null ? group.count * rangeFactor : Infinity;\n\n\t\tconst drawStart = Math.max( rangeStart, groupStart );\n\t\tconst drawEnd = Math.min( dataCount, rangeStart + rangeCount, groupStart + groupCount ) - 1;\n\n\t\tconst drawCount = Math.max( 0, drawEnd - drawStart + 1 );\n\n\t\tif ( drawCount === 0 ) return;\n\n\t\t//\n\n\t\tif ( object.isMesh ) {\n\n\t\t\tif ( material.wireframe === true ) {\n\n\t\t\t\tstate.setLineWidth( material.wireframeLinewidth * getTargetPixelRatio() );\n\t\t\t\trenderer.setMode( 1 );\n\n\t\t\t} else {\n\n\t\t\t\trenderer.setMode( 4 );\n\n\t\t\t}\n\n\t\t} else if ( object.isLine ) {\n\n\t\t\tlet lineWidth = material.linewidth;\n\n\t\t\tif ( lineWidth === undefined ) lineWidth = 1; // Not using Line*Material\n\n\t\t\tstate.setLineWidth( lineWidth * getTargetPixelRatio() );\n\n\t\t\tif ( object.isLineSegments ) {\n\n\t\t\t\trenderer.setMode( 1 );\n\n\t\t\t} else if ( object.isLineLoop ) {\n\n\t\t\t\trenderer.setMode( 2 );\n\n\t\t\t} else {\n\n\t\t\t\trenderer.setMode( 3 );\n\n\t\t\t}\n\n\t\t} else if ( object.isPoints ) {\n\n\t\t\trenderer.setMode( 0 );\n\n\t\t} else if ( object.isSprite ) {\n\n\t\t\trenderer.setMode( 4 );\n\n\t\t}\n\n\t\tif ( object.isInstancedMesh ) {\n\n\t\t\trenderer.renderInstances( drawStart, drawCount, object.count );\n\n\t\t} else if ( geometry.isInstancedBufferGeometry ) {\n\n\t\t\tconst instanceCount = Math.min( geometry.instanceCount, geometry._maxInstanceCount );\n\n\t\t\trenderer.renderInstances( drawStart, drawCount, instanceCount );\n\n\t\t} else {\n\n\t\t\trenderer.render( drawStart, drawCount );\n\n\t\t}\n\n\t};\n\n\t// Compile\n\n\tthis.compile = function ( scene, camera ) {\n\n\t\tcurrentRenderState = renderStates.get( scene );\n\t\tcurrentRenderState.init();\n\n\t\tscene.traverseVisible( function ( object ) {\n\n\t\t\tif ( object.isLight && object.layers.test( camera.layers ) ) {\n\n\t\t\t\tcurrentRenderState.pushLight( object );\n\n\t\t\t\tif ( object.castShadow ) {\n\n\t\t\t\t\tcurrentRenderState.pushShadow( object );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} );\n\n\t\tcurrentRenderState.setupLights();\n\n\t\tconst compiled = new WeakMap();\n\n\t\tscene.traverse( function ( object ) {\n\n\t\t\tconst material = object.material;\n\n\t\t\tif ( material ) {\n\n\t\t\t\tif ( Array.isArray( material ) ) {\n\n\t\t\t\t\tfor ( let i = 0; i < material.length; i ++ ) {\n\n\t\t\t\t\t\tconst material2 = material[ i ];\n\n\t\t\t\t\t\tif ( compiled.has( material2 ) === false ) {\n\n\t\t\t\t\t\t\tinitMaterial( material2, scene, object );\n\t\t\t\t\t\t\tcompiled.set( material2 );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t} else if ( compiled.has( material ) === false ) {\n\n\t\t\t\t\tinitMaterial( material, scene, object );\n\t\t\t\t\tcompiled.set( material );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} );\n\n\t};\n\n\t// Animation Loop\n\n\tlet onAnimationFrameCallback = null;\n\n\tfunction onAnimationFrame( time ) {\n\n\t\tif ( xr.isPresenting ) return;\n\t\tif ( onAnimationFrameCallback ) onAnimationFrameCallback( time );\n\n\t}\n\n\tconst animation = new WebGLAnimation();\n\tanimation.setAnimationLoop( onAnimationFrame );\n\n\tif ( typeof window !== 'undefined' ) animation.setContext( window );\n\n\tthis.setAnimationLoop = function ( callback ) {\n\n\t\tonAnimationFrameCallback = callback;\n\t\txr.setAnimationLoop( callback );\n\n\t\t( callback === null ) ? animation.stop() : animation.start();\n\n\t};\n\n\t// Rendering\n\n\tthis.render = function ( scene, camera ) {\n\n\t\tlet renderTarget, forceClear;\n\n\t\tif ( arguments[ 2 ] !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer.render(): the renderTarget argument has been removed. Use .setRenderTarget() instead.' );\n\t\t\trenderTarget = arguments[ 2 ];\n\n\t\t}\n\n\t\tif ( arguments[ 3 ] !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer.render(): the forceClear argument has been removed. Use .clear() instead.' );\n\t\t\tforceClear = arguments[ 3 ];\n\n\t\t}\n\n\t\tif ( camera !== undefined && camera.isCamera !== true ) {\n\n\t\t\tconsole.error( 'THREE.WebGLRenderer.render: camera is not an instance of THREE.Camera.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( _isContextLost === true ) return;\n\n\t\t// reset caching for this frame\n\n\t\tbindingStates.resetDefaultState();\n\t\t_currentMaterialId = - 1;\n\t\t_currentCamera = null;\n\n\t\t// update scene graph\n\n\t\tif ( scene.autoUpdate === true ) scene.updateMatrixWorld();\n\n\t\t// update camera matrices and frustum\n\n\t\tif ( camera.parent === null ) camera.updateMatrixWorld();\n\n\t\tif ( xr.enabled === true && xr.isPresenting === true ) {\n\n\t\t\tcamera = xr.getCamera( camera );\n\n\t\t}\n\n\t\t//\n\t\tif ( scene.isScene === true ) scene.onBeforeRender( _this, scene, camera, renderTarget || _currentRenderTarget );\n\n\t\tcurrentRenderState = renderStates.get( scene, renderStateStack.length );\n\t\tcurrentRenderState.init();\n\n\t\trenderStateStack.push( currentRenderState );\n\n\t\t_projScreenMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );\n\t\t_frustum.setFromProjectionMatrix( _projScreenMatrix );\n\n\t\t_localClippingEnabled = this.localClippingEnabled;\n\t\t_clippingEnabled = clipping.init( this.clippingPlanes, _localClippingEnabled, camera );\n\n\t\tcurrentRenderList = renderLists.get( scene, camera );\n\t\tcurrentRenderList.init();\n\n\t\tprojectObject( scene, camera, 0, _this.sortObjects );\n\n\t\tcurrentRenderList.finish();\n\n\t\tif ( _this.sortObjects === true ) {\n\n\t\t\tcurrentRenderList.sort( _opaqueSort, _transparentSort );\n\n\t\t}\n\n\t\t//\n\n\t\tif ( _clippingEnabled === true ) clipping.beginShadows();\n\n\t\tconst shadowsArray = currentRenderState.state.shadowsArray;\n\n\t\tshadowMap.render( shadowsArray, scene, camera );\n\n\t\tcurrentRenderState.setupLights();\n\t\tcurrentRenderState.setupLightsView( camera );\n\n\t\tif ( _clippingEnabled === true ) clipping.endShadows();\n\n\t\t//\n\n\t\tif ( this.info.autoReset === true ) this.info.reset();\n\n\t\tif ( renderTarget !== undefined ) {\n\n\t\t\tthis.setRenderTarget( renderTarget );\n\n\t\t}\n\n\t\t//\n\n\t\tbackground.render( currentRenderList, scene, camera, forceClear );\n\n\t\t// render scene\n\n\t\tconst opaqueObjects = currentRenderList.opaque;\n\t\tconst transparentObjects = currentRenderList.transparent;\n\n\t\tif ( opaqueObjects.length > 0 ) renderObjects( opaqueObjects, scene, camera );\n\t\tif ( transparentObjects.length > 0 ) renderObjects( transparentObjects, scene, camera );\n\n\t\t//\n\n\t\tif ( scene.isScene === true ) scene.onAfterRender( _this, scene, camera );\n\n\t\t//\n\n\t\tif ( _currentRenderTarget !== null ) {\n\n\t\t\t// Generate mipmap if we're using any kind of mipmap filtering\n\n\t\t\ttextures.updateRenderTargetMipmap( _currentRenderTarget );\n\n\t\t\t// resolve multisample renderbuffers to a single-sample texture if necessary\n\n\t\t\ttextures.updateMultisampleRenderTarget( _currentRenderTarget );\n\n\t\t}\n\n\t\t// Ensure depth buffer writing is enabled so it can be cleared on next render\n\n\t\tstate.buffers.depth.setTest( true );\n\t\tstate.buffers.depth.setMask( true );\n\t\tstate.buffers.color.setMask( true );\n\n\t\tstate.setPolygonOffset( false );\n\n\t\t// _gl.finish();\n\n\t\trenderStateStack.pop();\n\t\tif ( renderStateStack.length > 0 ) {\n\n\t\t\tcurrentRenderState = renderStateStack[ renderStateStack.length - 1 ];\n\n\t\t} else {\n\n\t\t\tcurrentRenderState = null;\n\n\t\t}\n\n\t\tcurrentRenderList = null;\n\n\t};\n\n\tfunction projectObject( object, camera, groupOrder, sortObjects ) {\n\n\t\tif ( object.visible === false ) return;\n\n\t\tconst visible = object.layers.test( camera.layers );\n\n\t\tif ( visible ) {\n\n\t\t\tif ( object.isGroup ) {\n\n\t\t\t\tgroupOrder = object.renderOrder;\n\n\t\t\t} else if ( object.isLOD ) {\n\n\t\t\t\tif ( object.autoUpdate === true ) object.update( camera );\n\n\t\t\t} else if ( object.isLight ) {\n\n\t\t\t\tcurrentRenderState.pushLight( object );\n\n\t\t\t\tif ( object.castShadow ) {\n\n\t\t\t\t\tcurrentRenderState.pushShadow( object );\n\n\t\t\t\t}\n\n\t\t\t} else if ( object.isSprite ) {\n\n\t\t\t\tif ( ! object.frustumCulled || _frustum.intersectsSprite( object ) ) {\n\n\t\t\t\t\tif ( sortObjects ) {\n\n\t\t\t\t\t\t_vector3.setFromMatrixPosition( object.matrixWorld )\n\t\t\t\t\t\t\t.applyMatrix4( _projScreenMatrix );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tconst geometry = objects.update( object );\n\t\t\t\t\tconst material = object.material;\n\n\t\t\t\t\tif ( material.visible ) {\n\n\t\t\t\t\t\tcurrentRenderList.push( object, geometry, material, groupOrder, _vector3.z, null );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t} else if ( object.isImmediateRenderObject ) {\n\n\t\t\t\tif ( sortObjects ) {\n\n\t\t\t\t\t_vector3.setFromMatrixPosition( object.matrixWorld )\n\t\t\t\t\t\t.applyMatrix4( _projScreenMatrix );\n\n\t\t\t\t}\n\n\t\t\t\tcurrentRenderList.push( object, null, object.material, groupOrder, _vector3.z, null );\n\n\t\t\t} else if ( object.isMesh || object.isLine || object.isPoints ) {\n\n\t\t\t\tif ( object.isSkinnedMesh ) {\n\n\t\t\t\t\t// update skeleton only once in a frame\n\n\t\t\t\t\tif ( object.skeleton.frame !== info.render.frame ) {\n\n\t\t\t\t\t\tobject.skeleton.update();\n\t\t\t\t\t\tobject.skeleton.frame = info.render.frame;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tif ( ! object.frustumCulled || _frustum.intersectsObject( object ) ) {\n\n\t\t\t\t\tif ( sortObjects ) {\n\n\t\t\t\t\t\t_vector3.setFromMatrixPosition( object.matrixWorld )\n\t\t\t\t\t\t\t.applyMatrix4( _projScreenMatrix );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tconst geometry = objects.update( object );\n\t\t\t\t\tconst material = object.material;\n\n\t\t\t\t\tif ( Array.isArray( material ) ) {\n\n\t\t\t\t\t\tconst groups = geometry.groups;\n\n\t\t\t\t\t\tfor ( let i = 0, l = groups.length; i < l; i ++ ) {\n\n\t\t\t\t\t\t\tconst group = groups[ i ];\n\t\t\t\t\t\t\tconst groupMaterial = material[ group.materialIndex ];\n\n\t\t\t\t\t\t\tif ( groupMaterial && groupMaterial.visible ) {\n\n\t\t\t\t\t\t\t\tcurrentRenderList.push( object, geometry, groupMaterial, groupOrder, _vector3.z, group );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t} else if ( material.visible ) {\n\n\t\t\t\t\t\tcurrentRenderList.push( object, geometry, material, groupOrder, _vector3.z, null );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst children = object.children;\n\n\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\tprojectObject( children[ i ], camera, groupOrder, sortObjects );\n\n\t\t}\n\n\t}\n\n\tfunction renderObjects( renderList, scene, camera ) {\n\n\t\tconst overrideMaterial = scene.isScene === true ? scene.overrideMaterial : null;\n\n\t\tfor ( let i = 0, l = renderList.length; i < l; i ++ ) {\n\n\t\t\tconst renderItem = renderList[ i ];\n\n\t\t\tconst object = renderItem.object;\n\t\t\tconst geometry = renderItem.geometry;\n\t\t\tconst material = overrideMaterial === null ? renderItem.material : overrideMaterial;\n\t\t\tconst group = renderItem.group;\n\n\t\t\tif ( camera.isArrayCamera ) {\n\n\t\t\t\tconst cameras = camera.cameras;\n\n\t\t\t\tfor ( let j = 0, jl = cameras.length; j < jl; j ++ ) {\n\n\t\t\t\t\tconst camera2 = cameras[ j ];\n\n\t\t\t\t\tif ( object.layers.test( camera2.layers ) ) {\n\n\t\t\t\t\t\tstate.viewport( _currentViewport.copy( camera2.viewport ) );\n\n\t\t\t\t\t\tcurrentRenderState.setupLightsView( camera2 );\n\n\t\t\t\t\t\trenderObject( object, scene, camera2, geometry, material, group );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\trenderObject( object, scene, camera, geometry, material, group );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tfunction renderObject( object, scene, camera, geometry, material, group ) {\n\n\t\tobject.onBeforeRender( _this, scene, camera, geometry, material, group );\n\n\t\tobject.modelViewMatrix.multiplyMatrices( camera.matrixWorldInverse, object.matrixWorld );\n\t\tobject.normalMatrix.getNormalMatrix( object.modelViewMatrix );\n\n\t\tif ( object.isImmediateRenderObject ) {\n\n\t\t\tconst program = setProgram( camera, scene, material, object );\n\n\t\t\tstate.setMaterial( material );\n\n\t\t\tbindingStates.reset();\n\n\t\t\trenderObjectImmediate( object, program );\n\n\t\t} else {\n\n\t\t\t_this.renderBufferDirect( camera, scene, geometry, material, object, group );\n\n\t\t}\n\n\t\tobject.onAfterRender( _this, scene, camera, geometry, material, group );\n\n\t}\n\n\tfunction initMaterial( material, scene, object ) {\n\n\t\tif ( scene.isScene !== true ) scene = _emptyScene; // scene could be a Mesh, Line, Points, ...\n\n\t\tconst materialProperties = properties.get( material );\n\n\t\tconst lights = currentRenderState.state.lights;\n\t\tconst shadowsArray = currentRenderState.state.shadowsArray;\n\n\t\tconst lightsStateVersion = lights.state.version;\n\n\t\tconst parameters = programCache.getParameters( material, lights.state, shadowsArray, scene, object );\n\t\tconst programCacheKey = programCache.getProgramCacheKey( parameters );\n\n\t\tlet program = materialProperties.program;\n\t\tlet programChange = true;\n\n\t\tif ( program === undefined ) {\n\n\t\t\t// new material\n\t\t\tmaterial.addEventListener( 'dispose', onMaterialDispose );\n\n\t\t} else if ( program.cacheKey !== programCacheKey ) {\n\n\t\t\t// changed glsl or parameters\n\t\t\treleaseMaterialProgramReference( material );\n\n\t\t} else if ( materialProperties.lightsStateVersion !== lightsStateVersion ) {\n\n\t\t\tprogramChange = false;\n\n\t\t} else if ( parameters.shaderID !== undefined ) {\n\n\t\t\t// same glsl and uniform list, envMap still needs the update here to avoid a frame-late effect\n\n\t\t\tconst environment = material.isMeshStandardMaterial ? scene.environment : null;\n\t\t\tmaterialProperties.envMap = cubemaps.get( material.envMap || environment );\n\n\t\t\treturn;\n\n\t\t} else {\n\n\t\t\t// only rebuild uniform list\n\t\t\tprogramChange = false;\n\n\t\t}\n\n\t\tif ( programChange ) {\n\n\t\t\tparameters.uniforms = programCache.getUniforms( material );\n\n\t\t\tmaterial.onBeforeCompile( parameters, _this );\n\n\t\t\tprogram = programCache.acquireProgram( parameters, programCacheKey );\n\n\t\t\tmaterialProperties.program = program;\n\t\t\tmaterialProperties.uniforms = parameters.uniforms;\n\t\t\tmaterialProperties.outputEncoding = parameters.outputEncoding;\n\n\t\t}\n\n\t\tconst uniforms = materialProperties.uniforms;\n\n\t\tif ( ! material.isShaderMaterial &&\n\t\t\t! material.isRawShaderMaterial ||\n\t\t\tmaterial.clipping === true ) {\n\n\t\t\tmaterialProperties.numClippingPlanes = clipping.numPlanes;\n\t\t\tmaterialProperties.numIntersection = clipping.numIntersection;\n\t\t\tuniforms.clippingPlanes = clipping.uniform;\n\n\t\t}\n\n\t\tmaterialProperties.environment = material.isMeshStandardMaterial ? scene.environment : null;\n\t\tmaterialProperties.fog = scene.fog;\n\t\tmaterialProperties.envMap = cubemaps.get( material.envMap || materialProperties.environment );\n\n\t\t// store the light setup it was created for\n\n\t\tmaterialProperties.needsLights = materialNeedsLights( material );\n\t\tmaterialProperties.lightsStateVersion = lightsStateVersion;\n\n\t\tif ( materialProperties.needsLights ) {\n\n\t\t\t// wire up the material to this renderer's lighting state\n\n\t\t\tuniforms.ambientLightColor.value = lights.state.ambient;\n\t\t\tuniforms.lightProbe.value = lights.state.probe;\n\t\t\tuniforms.directionalLights.value = lights.state.directional;\n\t\t\tuniforms.directionalLightShadows.value = lights.state.directionalShadow;\n\t\t\tuniforms.spotLights.value = lights.state.spot;\n\t\t\tuniforms.spotLightShadows.value = lights.state.spotShadow;\n\t\t\tuniforms.rectAreaLights.value = lights.state.rectArea;\n\t\t\tuniforms.ltc_1.value = lights.state.rectAreaLTC1;\n\t\t\tuniforms.ltc_2.value = lights.state.rectAreaLTC2;\n\t\t\tuniforms.pointLights.value = lights.state.point;\n\t\t\tuniforms.pointLightShadows.value = lights.state.pointShadow;\n\t\t\tuniforms.hemisphereLights.value = lights.state.hemi;\n\n\t\t\tuniforms.directionalShadowMap.value = lights.state.directionalShadowMap;\n\t\t\tuniforms.directionalShadowMatrix.value = lights.state.directionalShadowMatrix;\n\t\t\tuniforms.spotShadowMap.value = lights.state.spotShadowMap;\n\t\t\tuniforms.spotShadowMatrix.value = lights.state.spotShadowMatrix;\n\t\t\tuniforms.pointShadowMap.value = lights.state.pointShadowMap;\n\t\t\tuniforms.pointShadowMatrix.value = lights.state.pointShadowMatrix;\n\t\t\t// TODO (abelnation): add area lights shadow info to uniforms\n\n\t\t}\n\n\t\tconst progUniforms = materialProperties.program.getUniforms();\n\t\tconst uniformsList = WebGLUniforms.seqWithValue( progUniforms.seq, uniforms );\n\n\t\tmaterialProperties.uniformsList = uniformsList;\n\n\t}\n\n\tfunction setProgram( camera, scene, material, object ) {\n\n\t\tif ( scene.isScene !== true ) scene = _emptyScene; // scene could be a Mesh, Line, Points, ...\n\n\t\ttextures.resetTextureUnits();\n\n\t\tconst fog = scene.fog;\n\t\tconst environment = material.isMeshStandardMaterial ? scene.environment : null;\n\t\tconst encoding = ( _currentRenderTarget === null ) ? _this.outputEncoding : _currentRenderTarget.texture.encoding;\n\t\tconst envMap = cubemaps.get( material.envMap || environment );\n\n\t\tconst materialProperties = properties.get( material );\n\t\tconst lights = currentRenderState.state.lights;\n\n\t\tif ( _clippingEnabled === true ) {\n\n\t\t\tif ( _localClippingEnabled === true || camera !== _currentCamera ) {\n\n\t\t\t\tconst useCache =\n\t\t\t\t\tcamera === _currentCamera &&\n\t\t\t\t\tmaterial.id === _currentMaterialId;\n\n\t\t\t\t// we might want to call this function with some ClippingGroup\n\t\t\t\t// object instead of the material, once it becomes feasible\n\t\t\t\t// (#8465, #8379)\n\t\t\t\tclipping.setState( material, camera, useCache );\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( material.version === materialProperties.__version ) {\n\n\t\t\tif ( material.fog && materialProperties.fog !== fog ) {\n\n\t\t\t\tinitMaterial( material, scene, object );\n\n\t\t\t} else if ( materialProperties.environment !== environment ) {\n\n\t\t\t\tinitMaterial( material, scene, object );\n\n\t\t\t} else if ( materialProperties.needsLights && ( materialProperties.lightsStateVersion !== lights.state.version ) ) {\n\n\t\t\t\tinitMaterial( material, scene, object );\n\n\t\t\t} else if ( materialProperties.numClippingPlanes !== undefined &&\n\t\t\t\t( materialProperties.numClippingPlanes !== clipping.numPlanes ||\n\t\t\t\tmaterialProperties.numIntersection !== clipping.numIntersection ) ) {\n\n\t\t\t\tinitMaterial( material, scene, object );\n\n\t\t\t} else if ( materialProperties.outputEncoding !== encoding ) {\n\n\t\t\t\tinitMaterial( material, scene, object );\n\n\t\t\t} else if ( materialProperties.envMap !== envMap ) {\n\n\t\t\t\tinitMaterial( material, scene, object );\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tinitMaterial( material, scene, object );\n\t\t\tmaterialProperties.__version = material.version;\n\n\t\t}\n\n\t\tlet refreshProgram = false;\n\t\tlet refreshMaterial = false;\n\t\tlet refreshLights = false;\n\n\t\tconst program = materialProperties.program,\n\t\t\tp_uniforms = program.getUniforms(),\n\t\t\tm_uniforms = materialProperties.uniforms;\n\n\t\tif ( state.useProgram( program.program ) ) {\n\n\t\t\trefreshProgram = true;\n\t\t\trefreshMaterial = true;\n\t\t\trefreshLights = true;\n\n\t\t}\n\n\t\tif ( material.id !== _currentMaterialId ) {\n\n\t\t\t_currentMaterialId = material.id;\n\n\t\t\trefreshMaterial = true;\n\n\t\t}\n\n\t\tif ( refreshProgram || _currentCamera !== camera ) {\n\n\t\t\tp_uniforms.setValue( _gl, 'projectionMatrix', camera.projectionMatrix );\n\n\t\t\tif ( capabilities.logarithmicDepthBuffer ) {\n\n\t\t\t\tp_uniforms.setValue( _gl, 'logDepthBufFC',\n\t\t\t\t\t2.0 / ( Math.log( camera.far + 1.0 ) / Math.LN2 ) );\n\n\t\t\t}\n\n\t\t\tif ( _currentCamera !== camera ) {\n\n\t\t\t\t_currentCamera = camera;\n\n\t\t\t\t// lighting uniforms depend on the camera so enforce an update\n\t\t\t\t// now, in case this material supports lights - or later, when\n\t\t\t\t// the next material that does gets activated:\n\n\t\t\t\trefreshMaterial = true;\t\t// set to true on material change\n\t\t\t\trefreshLights = true;\t\t// remains set until update done\n\n\t\t\t}\n\n\t\t\t// load material specific uniforms\n\t\t\t// (shader material also gets them for the sake of genericity)\n\n\t\t\tif ( material.isShaderMaterial ||\n\t\t\t\tmaterial.isMeshPhongMaterial ||\n\t\t\t\tmaterial.isMeshToonMaterial ||\n\t\t\t\tmaterial.isMeshStandardMaterial ||\n\t\t\t\tmaterial.envMap ) {\n\n\t\t\t\tconst uCamPos = p_uniforms.map.cameraPosition;\n\n\t\t\t\tif ( uCamPos !== undefined ) {\n\n\t\t\t\t\tuCamPos.setValue( _gl,\n\t\t\t\t\t\t_vector3.setFromMatrixPosition( camera.matrixWorld ) );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( material.isMeshPhongMaterial ||\n\t\t\t\tmaterial.isMeshToonMaterial ||\n\t\t\t\tmaterial.isMeshLambertMaterial ||\n\t\t\t\tmaterial.isMeshBasicMaterial ||\n\t\t\t\tmaterial.isMeshStandardMaterial ||\n\t\t\t\tmaterial.isShaderMaterial ) {\n\n\t\t\t\tp_uniforms.setValue( _gl, 'isOrthographic', camera.isOrthographicCamera === true );\n\n\t\t\t}\n\n\t\t\tif ( material.isMeshPhongMaterial ||\n\t\t\t\tmaterial.isMeshToonMaterial ||\n\t\t\t\tmaterial.isMeshLambertMaterial ||\n\t\t\t\tmaterial.isMeshBasicMaterial ||\n\t\t\t\tmaterial.isMeshStandardMaterial ||\n\t\t\t\tmaterial.isShaderMaterial ||\n\t\t\t\tmaterial.isShadowMaterial ||\n\t\t\t\tmaterial.skinning ) {\n\n\t\t\t\tp_uniforms.setValue( _gl, 'viewMatrix', camera.matrixWorldInverse );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// skinning uniforms must be set even if material didn't change\n\t\t// auto-setting of texture unit for bone texture must go before other textures\n\t\t// otherwise textures used for skinning can take over texture units reserved for other material textures\n\n\t\tif ( material.skinning ) {\n\n\t\t\tp_uniforms.setOptional( _gl, object, 'bindMatrix' );\n\t\t\tp_uniforms.setOptional( _gl, object, 'bindMatrixInverse' );\n\n\t\t\tconst skeleton = object.skeleton;\n\n\t\t\tif ( skeleton ) {\n\n\t\t\t\tconst bones = skeleton.bones;\n\n\t\t\t\tif ( capabilities.floatVertexTextures ) {\n\n\t\t\t\t\tif ( skeleton.boneTexture === null ) {\n\n\t\t\t\t\t\t// layout (1 matrix = 4 pixels)\n\t\t\t\t\t\t//      RGBA RGBA RGBA RGBA (=> column1, column2, column3, column4)\n\t\t\t\t\t\t//  with  8x8  pixel texture max   16 bones * 4 pixels =  (8 * 8)\n\t\t\t\t\t\t//       16x16 pixel texture max   64 bones * 4 pixels = (16 * 16)\n\t\t\t\t\t\t//       32x32 pixel texture max  256 bones * 4 pixels = (32 * 32)\n\t\t\t\t\t\t//       64x64 pixel texture max 1024 bones * 4 pixels = (64 * 64)\n\n\n\t\t\t\t\t\tlet size = Math.sqrt( bones.length * 4 ); // 4 pixels needed for 1 matrix\n\t\t\t\t\t\tsize = MathUtils.ceilPowerOfTwo( size );\n\t\t\t\t\t\tsize = Math.max( size, 4 );\n\n\t\t\t\t\t\tconst boneMatrices = new Float32Array( size * size * 4 ); // 4 floats per RGBA pixel\n\t\t\t\t\t\tboneMatrices.set( skeleton.boneMatrices ); // copy current values\n\n\t\t\t\t\t\tconst boneTexture = new DataTexture( boneMatrices, size, size, RGBAFormat, FloatType );\n\n\t\t\t\t\t\tskeleton.boneMatrices = boneMatrices;\n\t\t\t\t\t\tskeleton.boneTexture = boneTexture;\n\t\t\t\t\t\tskeleton.boneTextureSize = size;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tp_uniforms.setValue( _gl, 'boneTexture', skeleton.boneTexture, textures );\n\t\t\t\t\tp_uniforms.setValue( _gl, 'boneTextureSize', skeleton.boneTextureSize );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tp_uniforms.setOptional( _gl, skeleton, 'boneMatrices' );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( refreshMaterial || materialProperties.receiveShadow !== object.receiveShadow ) {\n\n\t\t\tmaterialProperties.receiveShadow = object.receiveShadow;\n\t\t\tp_uniforms.setValue( _gl, 'receiveShadow', object.receiveShadow );\n\n\t\t}\n\n\t\tif ( refreshMaterial ) {\n\n\t\t\tp_uniforms.setValue( _gl, 'toneMappingExposure', _this.toneMappingExposure );\n\n\t\t\tif ( materialProperties.needsLights ) {\n\n\t\t\t\t// the current material requires lighting info\n\n\t\t\t\t// note: all lighting uniforms are always set correctly\n\t\t\t\t// they simply reference the renderer's state for their\n\t\t\t\t// values\n\t\t\t\t//\n\t\t\t\t// use the current material's .needsUpdate flags to set\n\t\t\t\t// the GL state when required\n\n\t\t\t\tmarkUniformsLightsNeedsUpdate( m_uniforms, refreshLights );\n\n\t\t\t}\n\n\t\t\t// refresh uniforms common to several materials\n\n\t\t\tif ( fog && material.fog ) {\n\n\t\t\t\tmaterials.refreshFogUniforms( m_uniforms, fog );\n\n\t\t\t}\n\n\t\t\tmaterials.refreshMaterialUniforms( m_uniforms, material, _pixelRatio, _height );\n\n\t\t\tWebGLUniforms.upload( _gl, materialProperties.uniformsList, m_uniforms, textures );\n\n\t\t}\n\n\t\tif ( material.isShaderMaterial && material.uniformsNeedUpdate === true ) {\n\n\t\t\tWebGLUniforms.upload( _gl, materialProperties.uniformsList, m_uniforms, textures );\n\t\t\tmaterial.uniformsNeedUpdate = false;\n\n\t\t}\n\n\t\tif ( material.isSpriteMaterial ) {\n\n\t\t\tp_uniforms.setValue( _gl, 'center', object.center );\n\n\t\t}\n\n\t\t// common matrices\n\n\t\tp_uniforms.setValue( _gl, 'modelViewMatrix', object.modelViewMatrix );\n\t\tp_uniforms.setValue( _gl, 'normalMatrix', object.normalMatrix );\n\t\tp_uniforms.setValue( _gl, 'modelMatrix', object.matrixWorld );\n\n\t\treturn program;\n\n\t}\n\n\t// If uniforms are marked as clean, they don't need to be loaded to the GPU.\n\n\tfunction markUniformsLightsNeedsUpdate( uniforms, value ) {\n\n\t\tuniforms.ambientLightColor.needsUpdate = value;\n\t\tuniforms.lightProbe.needsUpdate = value;\n\n\t\tuniforms.directionalLights.needsUpdate = value;\n\t\tuniforms.directionalLightShadows.needsUpdate = value;\n\t\tuniforms.pointLights.needsUpdate = value;\n\t\tuniforms.pointLightShadows.needsUpdate = value;\n\t\tuniforms.spotLights.needsUpdate = value;\n\t\tuniforms.spotLightShadows.needsUpdate = value;\n\t\tuniforms.rectAreaLights.needsUpdate = value;\n\t\tuniforms.hemisphereLights.needsUpdate = value;\n\n\t}\n\n\tfunction materialNeedsLights( material ) {\n\n\t\treturn material.isMeshLambertMaterial || material.isMeshToonMaterial || material.isMeshPhongMaterial ||\n\t\t\tmaterial.isMeshStandardMaterial || material.isShadowMaterial ||\n\t\t\t( material.isShaderMaterial && material.lights === true );\n\n\t}\n\n\t//\n\tthis.setFramebuffer = function ( value ) {\n\n\t\tif ( _framebuffer !== value && _currentRenderTarget === null ) _gl.bindFramebuffer( 36160, value );\n\n\t\t_framebuffer = value;\n\n\t};\n\n\tthis.getActiveCubeFace = function () {\n\n\t\treturn _currentActiveCubeFace;\n\n\t};\n\n\tthis.getActiveMipmapLevel = function () {\n\n\t\treturn _currentActiveMipmapLevel;\n\n\t};\n\n\tthis.getRenderList = function () {\n\n\t\treturn currentRenderList;\n\n\t};\n\n\tthis.setRenderList = function ( renderList ) {\n\n\t\tcurrentRenderList = renderList;\n\n\t};\n\n\tthis.getRenderTarget = function () {\n\n\t\treturn _currentRenderTarget;\n\n\t};\n\n\tthis.setRenderTarget = function ( renderTarget, activeCubeFace = 0, activeMipmapLevel = 0 ) {\n\n\t\t_currentRenderTarget = renderTarget;\n\t\t_currentActiveCubeFace = activeCubeFace;\n\t\t_currentActiveMipmapLevel = activeMipmapLevel;\n\n\t\tif ( renderTarget && properties.get( renderTarget ).__webglFramebuffer === undefined ) {\n\n\t\t\ttextures.setupRenderTarget( renderTarget );\n\n\t\t}\n\n\t\tlet framebuffer = _framebuffer;\n\t\tlet isCube = false;\n\n\t\tif ( renderTarget ) {\n\n\t\t\tconst __webglFramebuffer = properties.get( renderTarget ).__webglFramebuffer;\n\n\t\t\tif ( renderTarget.isWebGLCubeRenderTarget ) {\n\n\t\t\t\tframebuffer = __webglFramebuffer[ activeCubeFace ];\n\t\t\t\tisCube = true;\n\n\t\t\t} else if ( renderTarget.isWebGLMultisampleRenderTarget ) {\n\n\t\t\t\tframebuffer = properties.get( renderTarget ).__webglMultisampledFramebuffer;\n\n\t\t\t} else {\n\n\t\t\t\tframebuffer = __webglFramebuffer;\n\n\t\t\t}\n\n\t\t\t_currentViewport.copy( renderTarget.viewport );\n\t\t\t_currentScissor.copy( renderTarget.scissor );\n\t\t\t_currentScissorTest = renderTarget.scissorTest;\n\n\t\t} else {\n\n\t\t\t_currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ).floor();\n\t\t\t_currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ).floor();\n\t\t\t_currentScissorTest = _scissorTest;\n\n\t\t}\n\n\t\tif ( _currentFramebuffer !== framebuffer ) {\n\n\t\t\t_gl.bindFramebuffer( 36160, framebuffer );\n\t\t\t_currentFramebuffer = framebuffer;\n\n\t\t}\n\n\t\tstate.viewport( _currentViewport );\n\t\tstate.scissor( _currentScissor );\n\t\tstate.setScissorTest( _currentScissorTest );\n\n\t\tif ( isCube ) {\n\n\t\t\tconst textureProperties = properties.get( renderTarget.texture );\n\t\t\t_gl.framebufferTexture2D( 36160, 36064, 34069 + activeCubeFace, textureProperties.__webglTexture, activeMipmapLevel );\n\n\t\t}\n\n\t};\n\n\tthis.readRenderTargetPixels = function ( renderTarget, x, y, width, height, buffer, activeCubeFaceIndex ) {\n\n\t\tif ( ! ( renderTarget && renderTarget.isWebGLRenderTarget ) ) {\n\n\t\t\tconsole.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not THREE.WebGLRenderTarget.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tlet framebuffer = properties.get( renderTarget ).__webglFramebuffer;\n\n\t\tif ( renderTarget.isWebGLCubeRenderTarget && activeCubeFaceIndex !== undefined ) {\n\n\t\t\tframebuffer = framebuffer[ activeCubeFaceIndex ];\n\n\t\t}\n\n\t\tif ( framebuffer ) {\n\n\t\t\tlet restore = false;\n\n\t\t\tif ( framebuffer !== _currentFramebuffer ) {\n\n\t\t\t\t_gl.bindFramebuffer( 36160, framebuffer );\n\n\t\t\t\trestore = true;\n\n\t\t\t}\n\n\t\t\ttry {\n\n\t\t\t\tconst texture = renderTarget.texture;\n\t\t\t\tconst textureFormat = texture.format;\n\t\t\t\tconst textureType = texture.type;\n\n\t\t\t\tif ( textureFormat !== RGBAFormat && utils.convert( textureFormat ) !== _gl.getParameter( 35739 ) ) {\n\n\t\t\t\t\tconsole.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in RGBA or implementation defined format.' );\n\t\t\t\t\treturn;\n\n\t\t\t\t}\n\n\t\t\t\tif ( textureType !== UnsignedByteType && utils.convert( textureType ) !== _gl.getParameter( 35738 ) && // IE11, Edge and Chrome Mac < 52 (#9513)\n\t\t\t\t\t! ( textureType === FloatType && ( capabilities.isWebGL2 || extensions.get( 'OES_texture_float' ) || extensions.get( 'WEBGL_color_buffer_float' ) ) ) && // Chrome Mac >= 52 and Firefox\n\t\t\t\t\t! ( textureType === HalfFloatType && ( capabilities.isWebGL2 ? extensions.get( 'EXT_color_buffer_float' ) : extensions.get( 'EXT_color_buffer_half_float' ) ) ) ) {\n\n\t\t\t\t\tconsole.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in UnsignedByteType or implementation defined type.' );\n\t\t\t\t\treturn;\n\n\t\t\t\t}\n\n\t\t\t\tif ( _gl.checkFramebufferStatus( 36160 ) === 36053 ) {\n\n\t\t\t\t\t// the following if statement ensures valid read requests (no out-of-bounds pixels, see #8604)\n\n\t\t\t\t\tif ( ( x >= 0 && x <= ( renderTarget.width - width ) ) && ( y >= 0 && y <= ( renderTarget.height - height ) ) ) {\n\n\t\t\t\t\t\t_gl.readPixels( x, y, width, height, utils.convert( textureFormat ), utils.convert( textureType ), buffer );\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.error( 'THREE.WebGLRenderer.readRenderTargetPixels: readPixels from renderTarget failed. Framebuffer not complete.' );\n\n\t\t\t\t}\n\n\t\t\t} finally {\n\n\t\t\t\tif ( restore ) {\n\n\t\t\t\t\t_gl.bindFramebuffer( 36160, _currentFramebuffer );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t};\n\n\tthis.copyFramebufferToTexture = function ( position, texture, level = 0 ) {\n\n\t\tconst levelScale = Math.pow( 2, - level );\n\t\tconst width = Math.floor( texture.image.width * levelScale );\n\t\tconst height = Math.floor( texture.image.height * levelScale );\n\t\tconst glFormat = utils.convert( texture.format );\n\n\t\ttextures.setTexture2D( texture, 0 );\n\n\t\t_gl.copyTexImage2D( 3553, level, glFormat, position.x, position.y, width, height, 0 );\n\n\t\tstate.unbindTexture();\n\n\t};\n\n\tthis.copyTextureToTexture = function ( position, srcTexture, dstTexture, level = 0 ) {\n\n\t\tconst width = srcTexture.image.width;\n\t\tconst height = srcTexture.image.height;\n\t\tconst glFormat = utils.convert( dstTexture.format );\n\t\tconst glType = utils.convert( dstTexture.type );\n\n\t\ttextures.setTexture2D( dstTexture, 0 );\n\n\t\t// As another texture upload may have changed pixelStorei\n\t\t// parameters, make sure they are correct for the dstTexture\n\t\t_gl.pixelStorei( 37440, dstTexture.flipY );\n\t\t_gl.pixelStorei( 37441, dstTexture.premultiplyAlpha );\n\t\t_gl.pixelStorei( 3317, dstTexture.unpackAlignment );\n\n\t\tif ( srcTexture.isDataTexture ) {\n\n\t\t\t_gl.texSubImage2D( 3553, level, position.x, position.y, width, height, glFormat, glType, srcTexture.image.data );\n\n\t\t} else {\n\n\t\t\tif ( srcTexture.isCompressedTexture ) {\n\n\t\t\t\t_gl.compressedTexSubImage2D( 3553, level, position.x, position.y, srcTexture.mipmaps[ 0 ].width, srcTexture.mipmaps[ 0 ].height, glFormat, srcTexture.mipmaps[ 0 ].data );\n\n\t\t\t} else {\n\n\t\t\t\t_gl.texSubImage2D( 3553, level, position.x, position.y, glFormat, glType, srcTexture.image );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// Generate mipmaps only when copying level 0\n\t\tif ( level === 0 && dstTexture.generateMipmaps ) _gl.generateMipmap( 3553 );\n\n\t\tstate.unbindTexture();\n\n\t};\n\n\tthis.initTexture = function ( texture ) {\n\n\t\ttextures.setTexture2D( texture, 0 );\n\n\t\tstate.unbindTexture();\n\n\t};\n\n\tthis.resetState = function () {\n\n\t\tstate.reset();\n\t\tbindingStates.reset();\n\n\t};\n\n\tif ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {\n\n\t\t__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) ); // eslint-disable-line no-undef\n\n\t}\n\n}\n\nfunction WebGL1Renderer( parameters ) {\n\n\tWebGLRenderer.call( this, parameters );\n\n}\n\nWebGL1Renderer.prototype = Object.assign( Object.create( WebGLRenderer.prototype ), {\n\n\tconstructor: WebGL1Renderer,\n\n\tisWebGL1Renderer: true\n\n} );\n\nclass FogExp2 {\n\n\tconstructor( color, density ) {\n\n\t\tObject.defineProperty( this, 'isFogExp2', { value: true } );\n\n\t\tthis.name = '';\n\n\t\tthis.color = new Color( color );\n\t\tthis.density = ( density !== undefined ) ? density : 0.00025;\n\n\t}\n\n\tclone() {\n\n\t\treturn new FogExp2( this.color, this.density );\n\n\t}\n\n\ttoJSON( /* meta */ ) {\n\n\t\treturn {\n\t\t\ttype: 'FogExp2',\n\t\t\tcolor: this.color.getHex(),\n\t\t\tdensity: this.density\n\t\t};\n\n\t}\n\n}\n\nclass Fog {\n\n\tconstructor( color, near, far ) {\n\n\t\tObject.defineProperty( this, 'isFog', { value: true } );\n\n\t\tthis.name = '';\n\n\t\tthis.color = new Color( color );\n\n\t\tthis.near = ( near !== undefined ) ? near : 1;\n\t\tthis.far = ( far !== undefined ) ? far : 1000;\n\n\t}\n\n\tclone() {\n\n\t\treturn new Fog( this.color, this.near, this.far );\n\n\t}\n\n\ttoJSON( /* meta */ ) {\n\n\t\treturn {\n\t\t\ttype: 'Fog',\n\t\t\tcolor: this.color.getHex(),\n\t\t\tnear: this.near,\n\t\t\tfar: this.far\n\t\t};\n\n\t}\n\n}\n\nclass Scene extends Object3D {\n\n\tconstructor() {\n\n\t\tsuper();\n\n\t\tObject.defineProperty( this, 'isScene', { value: true } );\n\n\t\tthis.type = 'Scene';\n\n\t\tthis.background = null;\n\t\tthis.environment = null;\n\t\tthis.fog = null;\n\n\t\tthis.overrideMaterial = null;\n\n\t\tthis.autoUpdate = true; // checked by the renderer\n\n\t\tif ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {\n\n\t\t\t__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) ); // eslint-disable-line no-undef\n\n\t\t}\n\n\t}\n\n\tcopy( source, recursive ) {\n\n\t\tsuper.copy( source, recursive );\n\n\t\tif ( source.background !== null ) this.background = source.background.clone();\n\t\tif ( source.environment !== null ) this.environment = source.environment.clone();\n\t\tif ( source.fog !== null ) this.fog = source.fog.clone();\n\n\t\tif ( source.overrideMaterial !== null ) this.overrideMaterial = source.overrideMaterial.clone();\n\n\t\tthis.autoUpdate = source.autoUpdate;\n\t\tthis.matrixAutoUpdate = source.matrixAutoUpdate;\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON( meta ) {\n\n\t\tconst data = super.toJSON( meta );\n\n\t\tif ( this.background !== null ) data.object.background = this.background.toJSON( meta );\n\t\tif ( this.environment !== null ) data.object.environment = this.environment.toJSON( meta );\n\t\tif ( this.fog !== null ) data.object.fog = this.fog.toJSON();\n\n\t\treturn data;\n\n\t}\n\n}\n\nfunction InterleavedBuffer( array, stride ) {\n\n\tthis.array = array;\n\tthis.stride = stride;\n\tthis.count = array !== undefined ? array.length / stride : 0;\n\n\tthis.usage = StaticDrawUsage;\n\tthis.updateRange = { offset: 0, count: - 1 };\n\n\tthis.version = 0;\n\n\tthis.uuid = MathUtils.generateUUID();\n\n}\n\nObject.defineProperty( InterleavedBuffer.prototype, 'needsUpdate', {\n\n\tset: function ( value ) {\n\n\t\tif ( value === true ) this.version ++;\n\n\t}\n\n} );\n\nObject.assign( InterleavedBuffer.prototype, {\n\n\tisInterleavedBuffer: true,\n\n\tonUploadCallback: function () {},\n\n\tsetUsage: function ( value ) {\n\n\t\tthis.usage = value;\n\n\t\treturn this;\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\tthis.array = new source.array.constructor( source.array );\n\t\tthis.count = source.count;\n\t\tthis.stride = source.stride;\n\t\tthis.usage = source.usage;\n\n\t\treturn this;\n\n\t},\n\n\tcopyAt: function ( index1, attribute, index2 ) {\n\n\t\tindex1 *= this.stride;\n\t\tindex2 *= attribute.stride;\n\n\t\tfor ( let i = 0, l = this.stride; i < l; i ++ ) {\n\n\t\t\tthis.array[ index1 + i ] = attribute.array[ index2 + i ];\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tset: function ( value, offset = 0 ) {\n\n\t\tthis.array.set( value, offset );\n\n\t\treturn this;\n\n\t},\n\n\tclone: function ( data ) {\n\n\t\tif ( data.arrayBuffers === undefined ) {\n\n\t\t\tdata.arrayBuffers = {};\n\n\t\t}\n\n\t\tif ( this.array.buffer._uuid === undefined ) {\n\n\t\t\tthis.array.buffer._uuid = MathUtils.generateUUID();\n\n\t\t}\n\n\t\tif ( data.arrayBuffers[ this.array.buffer._uuid ] === undefined ) {\n\n\t\t\tdata.arrayBuffers[ this.array.buffer._uuid ] = this.array.slice( 0 ).buffer;\n\n\t\t}\n\n\t\tconst array = new this.array.constructor( data.arrayBuffers[ this.array.buffer._uuid ] );\n\n\t\tconst ib = new InterleavedBuffer( array, this.stride );\n\t\tib.setUsage( this.usage );\n\n\t\treturn ib;\n\n\t},\n\n\tonUpload: function ( callback ) {\n\n\t\tthis.onUploadCallback = callback;\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function ( data ) {\n\n\t\tif ( data.arrayBuffers === undefined ) {\n\n\t\t\tdata.arrayBuffers = {};\n\n\t\t}\n\n\t\t// generate UUID for array buffer if necessary\n\n\t\tif ( this.array.buffer._uuid === undefined ) {\n\n\t\t\tthis.array.buffer._uuid = MathUtils.generateUUID();\n\n\t\t}\n\n\t\tif ( data.arrayBuffers[ this.array.buffer._uuid ] === undefined ) {\n\n\t\t\tdata.arrayBuffers[ this.array.buffer._uuid ] = Array.prototype.slice.call( new Uint32Array( this.array.buffer ) );\n\n\t\t}\n\n\t\t//\n\n\t\treturn {\n\t\t\tuuid: this.uuid,\n\t\t\tbuffer: this.array.buffer._uuid,\n\t\t\ttype: this.array.constructor.name,\n\t\t\tstride: this.stride\n\t\t};\n\n\t}\n\n} );\n\nconst _vector$6 = new Vector3();\n\nfunction InterleavedBufferAttribute( interleavedBuffer, itemSize, offset, normalized ) {\n\n\tthis.name = '';\n\n\tthis.data = interleavedBuffer;\n\tthis.itemSize = itemSize;\n\tthis.offset = offset;\n\n\tthis.normalized = normalized === true;\n\n}\n\nObject.defineProperties( InterleavedBufferAttribute.prototype, {\n\n\tcount: {\n\n\t\tget: function () {\n\n\t\t\treturn this.data.count;\n\n\t\t}\n\n\t},\n\n\tarray: {\n\n\t\tget: function () {\n\n\t\t\treturn this.data.array;\n\n\t\t}\n\n\t},\n\n\tneedsUpdate: {\n\n\t\tset: function ( value ) {\n\n\t\t\tthis.data.needsUpdate = value;\n\n\t\t}\n\n\t}\n\n} );\n\nObject.assign( InterleavedBufferAttribute.prototype, {\n\n\tisInterleavedBufferAttribute: true,\n\n\tapplyMatrix4: function ( m ) {\n\n\t\tfor ( let i = 0, l = this.data.count; i < l; i ++ ) {\n\n\t\t\t_vector$6.x = this.getX( i );\n\t\t\t_vector$6.y = this.getY( i );\n\t\t\t_vector$6.z = this.getZ( i );\n\n\t\t\t_vector$6.applyMatrix4( m );\n\n\t\t\tthis.setXYZ( i, _vector$6.x, _vector$6.y, _vector$6.z );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tsetX: function ( index, x ) {\n\n\t\tthis.data.array[ index * this.data.stride + this.offset ] = x;\n\n\t\treturn this;\n\n\t},\n\n\tsetY: function ( index, y ) {\n\n\t\tthis.data.array[ index * this.data.stride + this.offset + 1 ] = y;\n\n\t\treturn this;\n\n\t},\n\n\tsetZ: function ( index, z ) {\n\n\t\tthis.data.array[ index * this.data.stride + this.offset + 2 ] = z;\n\n\t\treturn this;\n\n\t},\n\n\tsetW: function ( index, w ) {\n\n\t\tthis.data.array[ index * this.data.stride + this.offset + 3 ] = w;\n\n\t\treturn this;\n\n\t},\n\n\tgetX: function ( index ) {\n\n\t\treturn this.data.array[ index * this.data.stride + this.offset ];\n\n\t},\n\n\tgetY: function ( index ) {\n\n\t\treturn this.data.array[ index * this.data.stride + this.offset + 1 ];\n\n\t},\n\n\tgetZ: function ( index ) {\n\n\t\treturn this.data.array[ index * this.data.stride + this.offset + 2 ];\n\n\t},\n\n\tgetW: function ( index ) {\n\n\t\treturn this.data.array[ index * this.data.stride + this.offset + 3 ];\n\n\t},\n\n\tsetXY: function ( index, x, y ) {\n\n\t\tindex = index * this.data.stride + this.offset;\n\n\t\tthis.data.array[ index + 0 ] = x;\n\t\tthis.data.array[ index + 1 ] = y;\n\n\t\treturn this;\n\n\t},\n\n\tsetXYZ: function ( index, x, y, z ) {\n\n\t\tindex = index * this.data.stride + this.offset;\n\n\t\tthis.data.array[ index + 0 ] = x;\n\t\tthis.data.array[ index + 1 ] = y;\n\t\tthis.data.array[ index + 2 ] = z;\n\n\t\treturn this;\n\n\t},\n\n\tsetXYZW: function ( index, x, y, z, w ) {\n\n\t\tindex = index * this.data.stride + this.offset;\n\n\t\tthis.data.array[ index + 0 ] = x;\n\t\tthis.data.array[ index + 1 ] = y;\n\t\tthis.data.array[ index + 2 ] = z;\n\t\tthis.data.array[ index + 3 ] = w;\n\n\t\treturn this;\n\n\t},\n\n\tclone: function ( data ) {\n\n\t\tif ( data === undefined ) {\n\n\t\t\tconsole.log( 'THREE.InterleavedBufferAttribute.clone(): Cloning an interlaved buffer attribute will deinterleave buffer data.' );\n\n\t\t\tconst array = [];\n\n\t\t\tfor ( let i = 0; i < this.count; i ++ ) {\n\n\t\t\t\tconst index = i * this.data.stride + this.offset;\n\n\t\t\t\tfor ( let j = 0; j < this.itemSize; j ++ ) {\n\n\t\t\t\t\tarray.push( this.data.array[ index + j ] );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\treturn new BufferAttribute( new this.array.constructor( array ), this.itemSize, this.normalized );\n\n\t\t} else {\n\n\t\t\tif ( data.interleavedBuffers === undefined ) {\n\n\t\t\t\tdata.interleavedBuffers = {};\n\n\t\t\t}\n\n\t\t\tif ( data.interleavedBuffers[ this.data.uuid ] === undefined ) {\n\n\t\t\t\tdata.interleavedBuffers[ this.data.uuid ] = this.data.clone( data );\n\n\t\t\t}\n\n\t\t\treturn new InterleavedBufferAttribute( data.interleavedBuffers[ this.data.uuid ], this.itemSize, this.offset, this.normalized );\n\n\t\t}\n\n\t},\n\n\ttoJSON: function ( data ) {\n\n\t\tif ( data === undefined ) {\n\n\t\t\tconsole.log( 'THREE.InterleavedBufferAttribute.toJSON(): Serializing an interlaved buffer attribute will deinterleave buffer data.' );\n\n\t\t\tconst array = [];\n\n\t\t\tfor ( let i = 0; i < this.count; i ++ ) {\n\n\t\t\t\tconst index = i * this.data.stride + this.offset;\n\n\t\t\t\tfor ( let j = 0; j < this.itemSize; j ++ ) {\n\n\t\t\t\t\tarray.push( this.data.array[ index + j ] );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// deinterleave data and save it as an ordinary buffer attribute for now\n\n\t\t\treturn {\n\t\t\t\titemSize: this.itemSize,\n\t\t\t\ttype: this.array.constructor.name,\n\t\t\t\tarray: array,\n\t\t\t\tnormalized: this.normalized\n\t\t\t};\n\n\t\t} else {\n\n\t\t\t// save as true interlaved attribtue\n\n\t\t\tif ( data.interleavedBuffers === undefined ) {\n\n\t\t\t\tdata.interleavedBuffers = {};\n\n\t\t\t}\n\n\t\t\tif ( data.interleavedBuffers[ this.data.uuid ] === undefined ) {\n\n\t\t\t\tdata.interleavedBuffers[ this.data.uuid ] = this.data.toJSON( data );\n\n\t\t\t}\n\n\t\t\treturn {\n\t\t\t\tisInterleavedBufferAttribute: true,\n\t\t\t\titemSize: this.itemSize,\n\t\t\t\tdata: this.data.uuid,\n\t\t\t\toffset: this.offset,\n\t\t\t\tnormalized: this.normalized\n\t\t\t};\n\n\t\t}\n\n\t}\n\n} );\n\n/**\n * parameters = {\n *  color: <hex>,\n *  map: new THREE.Texture( <Image> ),\n *  alphaMap: new THREE.Texture( <Image> ),\n *  rotation: <float>,\n *  sizeAttenuation: <bool>\n * }\n */\n\nfunction SpriteMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.type = 'SpriteMaterial';\n\n\tthis.color = new Color( 0xffffff );\n\n\tthis.map = null;\n\n\tthis.alphaMap = null;\n\n\tthis.rotation = 0;\n\n\tthis.sizeAttenuation = true;\n\n\tthis.transparent = true;\n\n\tthis.setValues( parameters );\n\n}\n\nSpriteMaterial.prototype = Object.create( Material.prototype );\nSpriteMaterial.prototype.constructor = SpriteMaterial;\nSpriteMaterial.prototype.isSpriteMaterial = true;\n\nSpriteMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.color.copy( source.color );\n\n\tthis.map = source.map;\n\n\tthis.alphaMap = source.alphaMap;\n\n\tthis.rotation = source.rotation;\n\n\tthis.sizeAttenuation = source.sizeAttenuation;\n\n\treturn this;\n\n};\n\nlet _geometry;\n\nconst _intersectPoint = new Vector3();\nconst _worldScale = new Vector3();\nconst _mvPosition = new Vector3();\n\nconst _alignedPosition = new Vector2();\nconst _rotatedPosition = new Vector2();\nconst _viewWorldMatrix = new Matrix4();\n\nconst _vA$1 = new Vector3();\nconst _vB$1 = new Vector3();\nconst _vC$1 = new Vector3();\n\nconst _uvA$1 = new Vector2();\nconst _uvB$1 = new Vector2();\nconst _uvC$1 = new Vector2();\n\nfunction Sprite( material ) {\n\n\tObject3D.call( this );\n\n\tthis.type = 'Sprite';\n\n\tif ( _geometry === undefined ) {\n\n\t\t_geometry = new BufferGeometry();\n\n\t\tconst float32Array = new Float32Array( [\n\t\t\t- 0.5, - 0.5, 0, 0, 0,\n\t\t\t0.5, - 0.5, 0, 1, 0,\n\t\t\t0.5, 0.5, 0, 1, 1,\n\t\t\t- 0.5, 0.5, 0, 0, 1\n\t\t] );\n\n\t\tconst interleavedBuffer = new InterleavedBuffer( float32Array, 5 );\n\n\t\t_geometry.setIndex( [ 0, 1, 2,\t0, 2, 3 ] );\n\t\t_geometry.setAttribute( 'position', new InterleavedBufferAttribute( interleavedBuffer, 3, 0, false ) );\n\t\t_geometry.setAttribute( 'uv', new InterleavedBufferAttribute( interleavedBuffer, 2, 3, false ) );\n\n\t}\n\n\tthis.geometry = _geometry;\n\tthis.material = ( material !== undefined ) ? material : new SpriteMaterial();\n\n\tthis.center = new Vector2( 0.5, 0.5 );\n\n}\n\nSprite.prototype = Object.assign( Object.create( Object3D.prototype ), {\n\n\tconstructor: Sprite,\n\n\tisSprite: true,\n\n\traycast: function ( raycaster, intersects ) {\n\n\t\tif ( raycaster.camera === null ) {\n\n\t\t\tconsole.error( 'THREE.Sprite: \"Raycaster.camera\" needs to be set in order to raycast against sprites.' );\n\n\t\t}\n\n\t\t_worldScale.setFromMatrixScale( this.matrixWorld );\n\n\t\t_viewWorldMatrix.copy( raycaster.camera.matrixWorld );\n\t\tthis.modelViewMatrix.multiplyMatrices( raycaster.camera.matrixWorldInverse, this.matrixWorld );\n\n\t\t_mvPosition.setFromMatrixPosition( this.modelViewMatrix );\n\n\t\tif ( raycaster.camera.isPerspectiveCamera && this.material.sizeAttenuation === false ) {\n\n\t\t\t_worldScale.multiplyScalar( - _mvPosition.z );\n\n\t\t}\n\n\t\tconst rotation = this.material.rotation;\n\t\tlet sin, cos;\n\n\t\tif ( rotation !== 0 ) {\n\n\t\t\tcos = Math.cos( rotation );\n\t\t\tsin = Math.sin( rotation );\n\n\t\t}\n\n\t\tconst center = this.center;\n\n\t\ttransformVertex( _vA$1.set( - 0.5, - 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );\n\t\ttransformVertex( _vB$1.set( 0.5, - 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );\n\t\ttransformVertex( _vC$1.set( 0.5, 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );\n\n\t\t_uvA$1.set( 0, 0 );\n\t\t_uvB$1.set( 1, 0 );\n\t\t_uvC$1.set( 1, 1 );\n\n\t\t// check first triangle\n\t\tlet intersect = raycaster.ray.intersectTriangle( _vA$1, _vB$1, _vC$1, false, _intersectPoint );\n\n\t\tif ( intersect === null ) {\n\n\t\t\t// check second triangle\n\t\t\ttransformVertex( _vB$1.set( - 0.5, 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );\n\t\t\t_uvB$1.set( 0, 1 );\n\n\t\t\tintersect = raycaster.ray.intersectTriangle( _vA$1, _vC$1, _vB$1, false, _intersectPoint );\n\t\t\tif ( intersect === null ) {\n\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst distance = raycaster.ray.origin.distanceTo( _intersectPoint );\n\n\t\tif ( distance < raycaster.near || distance > raycaster.far ) return;\n\n\t\tintersects.push( {\n\n\t\t\tdistance: distance,\n\t\t\tpoint: _intersectPoint.clone(),\n\t\t\tuv: Triangle.getUV( _intersectPoint, _vA$1, _vB$1, _vC$1, _uvA$1, _uvB$1, _uvC$1, new Vector2() ),\n\t\t\tface: null,\n\t\t\tobject: this\n\n\t\t} );\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\tObject3D.prototype.copy.call( this, source );\n\n\t\tif ( source.center !== undefined ) this.center.copy( source.center );\n\n\t\tthis.material = source.material;\n\n\t\treturn this;\n\n\t}\n\n} );\n\nfunction transformVertex( vertexPosition, mvPosition, center, scale, sin, cos ) {\n\n\t// compute position in camera space\n\t_alignedPosition.subVectors( vertexPosition, center ).addScalar( 0.5 ).multiply( scale );\n\n\t// to check if rotation is not zero\n\tif ( sin !== undefined ) {\n\n\t\t_rotatedPosition.x = ( cos * _alignedPosition.x ) - ( sin * _alignedPosition.y );\n\t\t_rotatedPosition.y = ( sin * _alignedPosition.x ) + ( cos * _alignedPosition.y );\n\n\t} else {\n\n\t\t_rotatedPosition.copy( _alignedPosition );\n\n\t}\n\n\n\tvertexPosition.copy( mvPosition );\n\tvertexPosition.x += _rotatedPosition.x;\n\tvertexPosition.y += _rotatedPosition.y;\n\n\t// transform to world space\n\tvertexPosition.applyMatrix4( _viewWorldMatrix );\n\n}\n\nconst _v1$4 = new Vector3();\nconst _v2$2 = new Vector3();\n\nfunction LOD() {\n\n\tObject3D.call( this );\n\n\tthis._currentLevel = 0;\n\n\tthis.type = 'LOD';\n\n\tObject.defineProperties( this, {\n\t\tlevels: {\n\t\t\tenumerable: true,\n\t\t\tvalue: []\n\t\t}\n\t} );\n\n\tthis.autoUpdate = true;\n\n}\n\nLOD.prototype = Object.assign( Object.create( Object3D.prototype ), {\n\n\tconstructor: LOD,\n\n\tisLOD: true,\n\n\tcopy: function ( source ) {\n\n\t\tObject3D.prototype.copy.call( this, source, false );\n\n\t\tconst levels = source.levels;\n\n\t\tfor ( let i = 0, l = levels.length; i < l; i ++ ) {\n\n\t\t\tconst level = levels[ i ];\n\n\t\t\tthis.addLevel( level.object.clone(), level.distance );\n\n\t\t}\n\n\t\tthis.autoUpdate = source.autoUpdate;\n\n\t\treturn this;\n\n\t},\n\n\taddLevel: function ( object, distance = 0 ) {\n\n\t\tdistance = Math.abs( distance );\n\n\t\tconst levels = this.levels;\n\n\t\tlet l;\n\n\t\tfor ( l = 0; l < levels.length; l ++ ) {\n\n\t\t\tif ( distance < levels[ l ].distance ) {\n\n\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t}\n\n\t\tlevels.splice( l, 0, { distance: distance, object: object } );\n\n\t\tthis.add( object );\n\n\t\treturn this;\n\n\t},\n\n\tgetCurrentLevel: function () {\n\n\t\treturn this._currentLevel;\n\n\t},\n\n\tgetObjectForDistance: function ( distance ) {\n\n\t\tconst levels = this.levels;\n\n\t\tif ( levels.length > 0 ) {\n\n\t\t\tlet i, l;\n\n\t\t\tfor ( i = 1, l = levels.length; i < l; i ++ ) {\n\n\t\t\t\tif ( distance < levels[ i ].distance ) {\n\n\t\t\t\t\tbreak;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\treturn levels[ i - 1 ].object;\n\n\t\t}\n\n\t\treturn null;\n\n\t},\n\n\traycast: function ( raycaster, intersects ) {\n\n\t\tconst levels = this.levels;\n\n\t\tif ( levels.length > 0 ) {\n\n\t\t\t_v1$4.setFromMatrixPosition( this.matrixWorld );\n\n\t\t\tconst distance = raycaster.ray.origin.distanceTo( _v1$4 );\n\n\t\t\tthis.getObjectForDistance( distance ).raycast( raycaster, intersects );\n\n\t\t}\n\n\t},\n\n\tupdate: function ( camera ) {\n\n\t\tconst levels = this.levels;\n\n\t\tif ( levels.length > 1 ) {\n\n\t\t\t_v1$4.setFromMatrixPosition( camera.matrixWorld );\n\t\t\t_v2$2.setFromMatrixPosition( this.matrixWorld );\n\n\t\t\tconst distance = _v1$4.distanceTo( _v2$2 ) / camera.zoom;\n\n\t\t\tlevels[ 0 ].object.visible = true;\n\n\t\t\tlet i, l;\n\n\t\t\tfor ( i = 1, l = levels.length; i < l; i ++ ) {\n\n\t\t\t\tif ( distance >= levels[ i ].distance ) {\n\n\t\t\t\t\tlevels[ i - 1 ].object.visible = false;\n\t\t\t\t\tlevels[ i ].object.visible = true;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tbreak;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tthis._currentLevel = i - 1;\n\n\t\t\tfor ( ; i < l; i ++ ) {\n\n\t\t\t\tlevels[ i ].object.visible = false;\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\ttoJSON: function ( meta ) {\n\n\t\tconst data = Object3D.prototype.toJSON.call( this, meta );\n\n\t\tif ( this.autoUpdate === false ) data.object.autoUpdate = false;\n\n\t\tdata.object.levels = [];\n\n\t\tconst levels = this.levels;\n\n\t\tfor ( let i = 0, l = levels.length; i < l; i ++ ) {\n\n\t\t\tconst level = levels[ i ];\n\n\t\t\tdata.object.levels.push( {\n\t\t\t\tobject: level.object.uuid,\n\t\t\t\tdistance: level.distance\n\t\t\t} );\n\n\t\t}\n\n\t\treturn data;\n\n\t}\n\n} );\n\nconst _basePosition = new Vector3();\n\nconst _skinIndex = new Vector4();\nconst _skinWeight = new Vector4();\n\nconst _vector$7 = new Vector3();\nconst _matrix$1 = new Matrix4();\n\nfunction SkinnedMesh( geometry, material ) {\n\n\tif ( geometry && geometry.isGeometry ) {\n\n\t\tconsole.error( 'THREE.SkinnedMesh no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.' );\n\n\t}\n\n\tMesh.call( this, geometry, material );\n\n\tthis.type = 'SkinnedMesh';\n\n\tthis.bindMode = 'attached';\n\tthis.bindMatrix = new Matrix4();\n\tthis.bindMatrixInverse = new Matrix4();\n\n}\n\nSkinnedMesh.prototype = Object.assign( Object.create( Mesh.prototype ), {\n\n\tconstructor: SkinnedMesh,\n\n\tisSkinnedMesh: true,\n\n\tcopy: function ( source ) {\n\n\t\tMesh.prototype.copy.call( this, source );\n\n\t\tthis.bindMode = source.bindMode;\n\t\tthis.bindMatrix.copy( source.bindMatrix );\n\t\tthis.bindMatrixInverse.copy( source.bindMatrixInverse );\n\n\t\tthis.skeleton = source.skeleton;\n\n\t\treturn this;\n\n\t},\n\n\tbind: function ( skeleton, bindMatrix ) {\n\n\t\tthis.skeleton = skeleton;\n\n\t\tif ( bindMatrix === undefined ) {\n\n\t\t\tthis.updateMatrixWorld( true );\n\n\t\t\tthis.skeleton.calculateInverses();\n\n\t\t\tbindMatrix = this.matrixWorld;\n\n\t\t}\n\n\t\tthis.bindMatrix.copy( bindMatrix );\n\t\tthis.bindMatrixInverse.copy( bindMatrix ).invert();\n\n\t},\n\n\tpose: function () {\n\n\t\tthis.skeleton.pose();\n\n\t},\n\n\tnormalizeSkinWeights: function () {\n\n\t\tconst vector = new Vector4();\n\n\t\tconst skinWeight = this.geometry.attributes.skinWeight;\n\n\t\tfor ( let i = 0, l = skinWeight.count; i < l; i ++ ) {\n\n\t\t\tvector.x = skinWeight.getX( i );\n\t\t\tvector.y = skinWeight.getY( i );\n\t\t\tvector.z = skinWeight.getZ( i );\n\t\t\tvector.w = skinWeight.getW( i );\n\n\t\t\tconst scale = 1.0 / vector.manhattanLength();\n\n\t\t\tif ( scale !== Infinity ) {\n\n\t\t\t\tvector.multiplyScalar( scale );\n\n\t\t\t} else {\n\n\t\t\t\tvector.set( 1, 0, 0, 0 ); // do something reasonable\n\n\t\t\t}\n\n\t\t\tskinWeight.setXYZW( i, vector.x, vector.y, vector.z, vector.w );\n\n\t\t}\n\n\t},\n\n\tupdateMatrixWorld: function ( force ) {\n\n\t\tMesh.prototype.updateMatrixWorld.call( this, force );\n\n\t\tif ( this.bindMode === 'attached' ) {\n\n\t\t\tthis.bindMatrixInverse.copy( this.matrixWorld ).invert();\n\n\t\t} else if ( this.bindMode === 'detached' ) {\n\n\t\t\tthis.bindMatrixInverse.copy( this.bindMatrix ).invert();\n\n\t\t} else {\n\n\t\t\tconsole.warn( 'THREE.SkinnedMesh: Unrecognized bindMode: ' + this.bindMode );\n\n\t\t}\n\n\t},\n\n\tboneTransform: function ( index, target ) {\n\n\t\tconst skeleton = this.skeleton;\n\t\tconst geometry = this.geometry;\n\n\t\t_skinIndex.fromBufferAttribute( geometry.attributes.skinIndex, index );\n\t\t_skinWeight.fromBufferAttribute( geometry.attributes.skinWeight, index );\n\n\t\t_basePosition.fromBufferAttribute( geometry.attributes.position, index ).applyMatrix4( this.bindMatrix );\n\n\t\ttarget.set( 0, 0, 0 );\n\n\t\tfor ( let i = 0; i < 4; i ++ ) {\n\n\t\t\tconst weight = _skinWeight.getComponent( i );\n\n\t\t\tif ( weight !== 0 ) {\n\n\t\t\t\tconst boneIndex = _skinIndex.getComponent( i );\n\n\t\t\t\t_matrix$1.multiplyMatrices( skeleton.bones[ boneIndex ].matrixWorld, skeleton.boneInverses[ boneIndex ] );\n\n\t\t\t\ttarget.addScaledVector( _vector$7.copy( _basePosition ).applyMatrix4( _matrix$1 ), weight );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn target.applyMatrix4( this.bindMatrixInverse );\n\n\t}\n\n} );\n\nfunction Bone() {\n\n\tObject3D.call( this );\n\n\tthis.type = 'Bone';\n\n}\n\nBone.prototype = Object.assign( Object.create( Object3D.prototype ), {\n\n\tconstructor: Bone,\n\n\tisBone: true\n\n} );\n\nconst _offsetMatrix = new Matrix4();\nconst _identityMatrix = new Matrix4();\n\nfunction Skeleton( bones = [], boneInverses = [] ) {\n\n\tthis.uuid = MathUtils.generateUUID();\n\n\tthis.bones = bones.slice( 0 );\n\tthis.boneInverses = boneInverses;\n\tthis.boneMatrices = null;\n\n\tthis.boneTexture = null;\n\tthis.boneTextureSize = 0;\n\n\tthis.frame = - 1;\n\n\tthis.init();\n\n}\n\nObject.assign( Skeleton.prototype, {\n\n\tinit: function () {\n\n\t\tconst bones = this.bones;\n\t\tconst boneInverses = this.boneInverses;\n\n\t\tthis.boneMatrices = new Float32Array( bones.length * 16 );\n\n\t\t// calculate inverse bone matrices if necessary\n\n\t\tif ( boneInverses.length === 0 ) {\n\n\t\t\tthis.calculateInverses();\n\n\t\t} else {\n\n\t\t\t// handle special case\n\n\t\t\tif ( bones.length !== boneInverses.length ) {\n\n\t\t\t\tconsole.warn( 'THREE.Skeleton: Number of inverse bone matrices does not match amount of bones.' );\n\n\t\t\t\tthis.boneInverses = [];\n\n\t\t\t\tfor ( let i = 0, il = this.bones.length; i < il; i ++ ) {\n\n\t\t\t\t\tthis.boneInverses.push( new Matrix4() );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\tcalculateInverses: function () {\n\n\t\tthis.boneInverses.length = 0;\n\n\t\tfor ( let i = 0, il = this.bones.length; i < il; i ++ ) {\n\n\t\t\tconst inverse = new Matrix4();\n\n\t\t\tif ( this.bones[ i ] ) {\n\n\t\t\t\tinverse.copy( this.bones[ i ].matrixWorld ).invert();\n\n\t\t\t}\n\n\t\t\tthis.boneInverses.push( inverse );\n\n\t\t}\n\n\t},\n\n\tpose: function () {\n\n\t\t// recover the bind-time world matrices\n\n\t\tfor ( let i = 0, il = this.bones.length; i < il; i ++ ) {\n\n\t\t\tconst bone = this.bones[ i ];\n\n\t\t\tif ( bone ) {\n\n\t\t\t\tbone.matrixWorld.copy( this.boneInverses[ i ] ).invert();\n\n\t\t\t}\n\n\t\t}\n\n\t\t// compute the local matrices, positions, rotations and scales\n\n\t\tfor ( let i = 0, il = this.bones.length; i < il; i ++ ) {\n\n\t\t\tconst bone = this.bones[ i ];\n\n\t\t\tif ( bone ) {\n\n\t\t\t\tif ( bone.parent && bone.parent.isBone ) {\n\n\t\t\t\t\tbone.matrix.copy( bone.parent.matrixWorld ).invert();\n\t\t\t\t\tbone.matrix.multiply( bone.matrixWorld );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tbone.matrix.copy( bone.matrixWorld );\n\n\t\t\t\t}\n\n\t\t\t\tbone.matrix.decompose( bone.position, bone.quaternion, bone.scale );\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\tupdate: function () {\n\n\t\tconst bones = this.bones;\n\t\tconst boneInverses = this.boneInverses;\n\t\tconst boneMatrices = this.boneMatrices;\n\t\tconst boneTexture = this.boneTexture;\n\n\t\t// flatten bone matrices to array\n\n\t\tfor ( let i = 0, il = bones.length; i < il; i ++ ) {\n\n\t\t\t// compute the offset between the current and the original transform\n\n\t\t\tconst matrix = bones[ i ] ? bones[ i ].matrixWorld : _identityMatrix;\n\n\t\t\t_offsetMatrix.multiplyMatrices( matrix, boneInverses[ i ] );\n\t\t\t_offsetMatrix.toArray( boneMatrices, i * 16 );\n\n\t\t}\n\n\t\tif ( boneTexture !== null ) {\n\n\t\t\tboneTexture.needsUpdate = true;\n\n\t\t}\n\n\t},\n\n\tclone: function () {\n\n\t\treturn new Skeleton( this.bones, this.boneInverses );\n\n\t},\n\n\tgetBoneByName: function ( name ) {\n\n\t\tfor ( let i = 0, il = this.bones.length; i < il; i ++ ) {\n\n\t\t\tconst bone = this.bones[ i ];\n\n\t\t\tif ( bone.name === name ) {\n\n\t\t\t\treturn bone;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn undefined;\n\n\t},\n\n\tdispose: function ( ) {\n\n\t\tif ( this.boneTexture !== null ) {\n\n\t\t\tthis.boneTexture.dispose();\n\n\t\t\tthis.boneTexture = null;\n\n\t\t}\n\n\t},\n\n\tfromJSON: function ( json, bones ) {\n\n\t\tthis.uuid = json.uuid;\n\n\t\tfor ( let i = 0, l = json.bones.length; i < l; i ++ ) {\n\n\t\t\tconst uuid = json.bones[ i ];\n\t\t\tlet bone = bones[ uuid ];\n\n\t\t\tif ( bone === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.Skeleton: No bone found with UUID:', uuid );\n\t\t\t\tbone = new Bone();\n\n\t\t\t}\n\n\t\t\tthis.bones.push( bone );\n\t\t\tthis.boneInverses.push( new Matrix4().fromArray( json.boneInverses[ i ] ) );\n\n\t\t}\n\n\t\tthis.init();\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function () {\n\n\t\tconst data = {\n\t\t\tmetadata: {\n\t\t\t\tversion: 4.5,\n\t\t\t\ttype: 'Skeleton',\n\t\t\t\tgenerator: 'Skeleton.toJSON'\n\t\t\t},\n\t\t\tbones: [],\n\t\t\tboneInverses: []\n\t\t};\n\n\t\tdata.uuid = this.uuid;\n\n\t\tconst bones = this.bones;\n\t\tconst boneInverses = this.boneInverses;\n\n\t\tfor ( let i = 0, l = bones.length; i < l; i ++ ) {\n\n\t\t\tconst bone = bones[ i ];\n\t\t\tdata.bones.push( bone.uuid );\n\n\t\t\tconst boneInverse = boneInverses[ i ];\n\t\t\tdata.boneInverses.push( boneInverse.toArray() );\n\n\t\t}\n\n\t\treturn data;\n\n\t}\n\n} );\n\nconst _instanceLocalMatrix = new Matrix4();\nconst _instanceWorldMatrix = new Matrix4();\n\nconst _instanceIntersects = [];\n\nconst _mesh = new Mesh();\n\nfunction InstancedMesh( geometry, material, count ) {\n\n\tMesh.call( this, geometry, material );\n\n\tthis.instanceMatrix = new BufferAttribute( new Float32Array( count * 16 ), 16 );\n\tthis.instanceColor = null;\n\n\tthis.count = count;\n\n\tthis.frustumCulled = false;\n\n}\n\nInstancedMesh.prototype = Object.assign( Object.create( Mesh.prototype ), {\n\n\tconstructor: InstancedMesh,\n\n\tisInstancedMesh: true,\n\n\tcopy: function ( source ) {\n\n\t\tMesh.prototype.copy.call( this, source );\n\n\t\tthis.instanceMatrix.copy( source.instanceMatrix );\n\t\tthis.count = source.count;\n\n\t\treturn this;\n\n\t},\n\n\tgetColorAt: function ( index, color ) {\n\n\t\tcolor.fromArray( this.instanceColor.array, index * 3 );\n\n\t},\n\n\tgetMatrixAt: function ( index, matrix ) {\n\n\t\tmatrix.fromArray( this.instanceMatrix.array, index * 16 );\n\n\t},\n\n\traycast: function ( raycaster, intersects ) {\n\n\t\tconst matrixWorld = this.matrixWorld;\n\t\tconst raycastTimes = this.count;\n\n\t\t_mesh.geometry = this.geometry;\n\t\t_mesh.material = this.material;\n\n\t\tif ( _mesh.material === undefined ) return;\n\n\t\tfor ( let instanceId = 0; instanceId < raycastTimes; instanceId ++ ) {\n\n\t\t\t// calculate the world matrix for each instance\n\n\t\t\tthis.getMatrixAt( instanceId, _instanceLocalMatrix );\n\n\t\t\t_instanceWorldMatrix.multiplyMatrices( matrixWorld, _instanceLocalMatrix );\n\n\t\t\t// the mesh represents this single instance\n\n\t\t\t_mesh.matrixWorld = _instanceWorldMatrix;\n\n\t\t\t_mesh.raycast( raycaster, _instanceIntersects );\n\n\t\t\t// process the result of raycast\n\n\t\t\tfor ( let i = 0, l = _instanceIntersects.length; i < l; i ++ ) {\n\n\t\t\t\tconst intersect = _instanceIntersects[ i ];\n\t\t\t\tintersect.instanceId = instanceId;\n\t\t\t\tintersect.object = this;\n\t\t\t\tintersects.push( intersect );\n\n\t\t\t}\n\n\t\t\t_instanceIntersects.length = 0;\n\n\t\t}\n\n\t},\n\n\tsetColorAt: function ( index, color ) {\n\n\t\tif ( this.instanceColor === null ) {\n\n\t\t\tthis.instanceColor = new BufferAttribute( new Float32Array( this.count * 3 ), 3 );\n\n\t\t}\n\n\t\tcolor.toArray( this.instanceColor.array, index * 3 );\n\n\t},\n\n\tsetMatrixAt: function ( index, matrix ) {\n\n\t\tmatrix.toArray( this.instanceMatrix.array, index * 16 );\n\n\t},\n\n\tupdateMorphTargets: function () {\n\n\t},\n\n\tdispose: function () {\n\n\t\tthis.dispatchEvent( { type: 'dispose' } );\n\n\t}\n\n} );\n\n/**\n * parameters = {\n *  color: <hex>,\n *  opacity: <float>,\n *\n *  linewidth: <float>,\n *  linecap: \"round\",\n *  linejoin: \"round\"\n * }\n */\n\nfunction LineBasicMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.type = 'LineBasicMaterial';\n\n\tthis.color = new Color( 0xffffff );\n\n\tthis.linewidth = 1;\n\tthis.linecap = 'round';\n\tthis.linejoin = 'round';\n\n\tthis.morphTargets = false;\n\n\tthis.setValues( parameters );\n\n}\n\nLineBasicMaterial.prototype = Object.create( Material.prototype );\nLineBasicMaterial.prototype.constructor = LineBasicMaterial;\n\nLineBasicMaterial.prototype.isLineBasicMaterial = true;\n\nLineBasicMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.color.copy( source.color );\n\n\tthis.linewidth = source.linewidth;\n\tthis.linecap = source.linecap;\n\tthis.linejoin = source.linejoin;\n\n\tthis.morphTargets = source.morphTargets;\n\n\treturn this;\n\n};\n\nconst _start = new Vector3();\nconst _end = new Vector3();\nconst _inverseMatrix$1 = new Matrix4();\nconst _ray$1 = new Ray();\nconst _sphere$2 = new Sphere();\n\nfunction Line( geometry = new BufferGeometry(), material = new LineBasicMaterial() ) {\n\n\tObject3D.call( this );\n\n\tthis.type = 'Line';\n\n\tthis.geometry = geometry;\n\tthis.material = material;\n\n\tthis.updateMorphTargets();\n\n}\n\nLine.prototype = Object.assign( Object.create( Object3D.prototype ), {\n\n\tconstructor: Line,\n\n\tisLine: true,\n\n\tcopy: function ( source ) {\n\n\t\tObject3D.prototype.copy.call( this, source );\n\n\t\tthis.material = source.material;\n\t\tthis.geometry = source.geometry;\n\n\t\treturn this;\n\n\t},\n\n\tcomputeLineDistances: function () {\n\n\t\tconst geometry = this.geometry;\n\n\t\tif ( geometry.isBufferGeometry ) {\n\n\t\t\t// we assume non-indexed geometry\n\n\t\t\tif ( geometry.index === null ) {\n\n\t\t\t\tconst positionAttribute = geometry.attributes.position;\n\t\t\t\tconst lineDistances = [ 0 ];\n\n\t\t\t\tfor ( let i = 1, l = positionAttribute.count; i < l; i ++ ) {\n\n\t\t\t\t\t_start.fromBufferAttribute( positionAttribute, i - 1 );\n\t\t\t\t\t_end.fromBufferAttribute( positionAttribute, i );\n\n\t\t\t\t\tlineDistances[ i ] = lineDistances[ i - 1 ];\n\t\t\t\t\tlineDistances[ i ] += _start.distanceTo( _end );\n\n\t\t\t\t}\n\n\t\t\t\tgeometry.setAttribute( 'lineDistance', new Float32BufferAttribute( lineDistances, 1 ) );\n\n\t\t\t} else {\n\n\t\t\t\tconsole.warn( 'THREE.Line.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.' );\n\n\t\t\t}\n\n\t\t} else if ( geometry.isGeometry ) {\n\n\t\t\tconst vertices = geometry.vertices;\n\t\t\tconst lineDistances = geometry.lineDistances;\n\n\t\t\tlineDistances[ 0 ] = 0;\n\n\t\t\tfor ( let i = 1, l = vertices.length; i < l; i ++ ) {\n\n\t\t\t\tlineDistances[ i ] = lineDistances[ i - 1 ];\n\t\t\t\tlineDistances[ i ] += vertices[ i - 1 ].distanceTo( vertices[ i ] );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\traycast: function ( raycaster, intersects ) {\n\n\t\tconst geometry = this.geometry;\n\t\tconst matrixWorld = this.matrixWorld;\n\t\tconst threshold = raycaster.params.Line.threshold;\n\n\t\t// Checking boundingSphere distance to ray\n\n\t\tif ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();\n\n\t\t_sphere$2.copy( geometry.boundingSphere );\n\t\t_sphere$2.applyMatrix4( matrixWorld );\n\t\t_sphere$2.radius += threshold;\n\n\t\tif ( raycaster.ray.intersectsSphere( _sphere$2 ) === false ) return;\n\n\t\t//\n\n\t\t_inverseMatrix$1.copy( matrixWorld ).invert();\n\t\t_ray$1.copy( raycaster.ray ).applyMatrix4( _inverseMatrix$1 );\n\n\t\tconst localThreshold = threshold / ( ( this.scale.x + this.scale.y + this.scale.z ) / 3 );\n\t\tconst localThresholdSq = localThreshold * localThreshold;\n\n\t\tconst vStart = new Vector3();\n\t\tconst vEnd = new Vector3();\n\t\tconst interSegment = new Vector3();\n\t\tconst interRay = new Vector3();\n\t\tconst step = this.isLineSegments ? 2 : 1;\n\n\t\tif ( geometry.isBufferGeometry ) {\n\n\t\t\tconst index = geometry.index;\n\t\t\tconst attributes = geometry.attributes;\n\t\t\tconst positionAttribute = attributes.position;\n\n\t\t\tif ( index !== null ) {\n\n\t\t\t\tconst indices = index.array;\n\n\t\t\t\tfor ( let i = 0, l = indices.length - 1; i < l; i += step ) {\n\n\t\t\t\t\tconst a = indices[ i ];\n\t\t\t\t\tconst b = indices[ i + 1 ];\n\n\t\t\t\t\tvStart.fromBufferAttribute( positionAttribute, a );\n\t\t\t\t\tvEnd.fromBufferAttribute( positionAttribute, b );\n\n\t\t\t\t\tconst distSq = _ray$1.distanceSqToSegment( vStart, vEnd, interRay, interSegment );\n\n\t\t\t\t\tif ( distSq > localThresholdSq ) continue;\n\n\t\t\t\t\tinterRay.applyMatrix4( this.matrixWorld ); //Move back to world space for distance calculation\n\n\t\t\t\t\tconst distance = raycaster.ray.origin.distanceTo( interRay );\n\n\t\t\t\t\tif ( distance < raycaster.near || distance > raycaster.far ) continue;\n\n\t\t\t\t\tintersects.push( {\n\n\t\t\t\t\t\tdistance: distance,\n\t\t\t\t\t\t// What do we want? intersection point on the ray or on the segment??\n\t\t\t\t\t\t// point: raycaster.ray.at( distance ),\n\t\t\t\t\t\tpoint: interSegment.clone().applyMatrix4( this.matrixWorld ),\n\t\t\t\t\t\tindex: i,\n\t\t\t\t\t\tface: null,\n\t\t\t\t\t\tfaceIndex: null,\n\t\t\t\t\t\tobject: this\n\n\t\t\t\t\t} );\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tfor ( let i = 0, l = positionAttribute.count - 1; i < l; i += step ) {\n\n\t\t\t\t\tvStart.fromBufferAttribute( positionAttribute, i );\n\t\t\t\t\tvEnd.fromBufferAttribute( positionAttribute, i + 1 );\n\n\t\t\t\t\tconst distSq = _ray$1.distanceSqToSegment( vStart, vEnd, interRay, interSegment );\n\n\t\t\t\t\tif ( distSq > localThresholdSq ) continue;\n\n\t\t\t\t\tinterRay.applyMatrix4( this.matrixWorld ); //Move back to world space for distance calculation\n\n\t\t\t\t\tconst distance = raycaster.ray.origin.distanceTo( interRay );\n\n\t\t\t\t\tif ( distance < raycaster.near || distance > raycaster.far ) continue;\n\n\t\t\t\t\tintersects.push( {\n\n\t\t\t\t\t\tdistance: distance,\n\t\t\t\t\t\t// What do we want? intersection point on the ray or on the segment??\n\t\t\t\t\t\t// point: raycaster.ray.at( distance ),\n\t\t\t\t\t\tpoint: interSegment.clone().applyMatrix4( this.matrixWorld ),\n\t\t\t\t\t\tindex: i,\n\t\t\t\t\t\tface: null,\n\t\t\t\t\t\tfaceIndex: null,\n\t\t\t\t\t\tobject: this\n\n\t\t\t\t\t} );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else if ( geometry.isGeometry ) {\n\n\t\t\tconst vertices = geometry.vertices;\n\t\t\tconst nbVertices = vertices.length;\n\n\t\t\tfor ( let i = 0; i < nbVertices - 1; i += step ) {\n\n\t\t\t\tconst distSq = _ray$1.distanceSqToSegment( vertices[ i ], vertices[ i + 1 ], interRay, interSegment );\n\n\t\t\t\tif ( distSq > localThresholdSq ) continue;\n\n\t\t\t\tinterRay.applyMatrix4( this.matrixWorld ); //Move back to world space for distance calculation\n\n\t\t\t\tconst distance = raycaster.ray.origin.distanceTo( interRay );\n\n\t\t\t\tif ( distance < raycaster.near || distance > raycaster.far ) continue;\n\n\t\t\t\tintersects.push( {\n\n\t\t\t\t\tdistance: distance,\n\t\t\t\t\t// What do we want? intersection point on the ray or on the segment??\n\t\t\t\t\t// point: raycaster.ray.at( distance ),\n\t\t\t\t\tpoint: interSegment.clone().applyMatrix4( this.matrixWorld ),\n\t\t\t\t\tindex: i,\n\t\t\t\t\tface: null,\n\t\t\t\t\tfaceIndex: null,\n\t\t\t\t\tobject: this\n\n\t\t\t\t} );\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\tupdateMorphTargets: function () {\n\n\t\tconst geometry = this.geometry;\n\n\t\tif ( geometry.isBufferGeometry ) {\n\n\t\t\tconst morphAttributes = geometry.morphAttributes;\n\t\t\tconst keys = Object.keys( morphAttributes );\n\n\t\t\tif ( keys.length > 0 ) {\n\n\t\t\t\tconst morphAttribute = morphAttributes[ keys[ 0 ] ];\n\n\t\t\t\tif ( morphAttribute !== undefined ) {\n\n\t\t\t\t\tthis.morphTargetInfluences = [];\n\t\t\t\t\tthis.morphTargetDictionary = {};\n\n\t\t\t\t\tfor ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {\n\n\t\t\t\t\t\tconst name = morphAttribute[ m ].name || String( m );\n\n\t\t\t\t\t\tthis.morphTargetInfluences.push( 0 );\n\t\t\t\t\t\tthis.morphTargetDictionary[ name ] = m;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tconst morphTargets = geometry.morphTargets;\n\n\t\t\tif ( morphTargets !== undefined && morphTargets.length > 0 ) {\n\n\t\t\t\tconsole.error( 'THREE.Line.updateMorphTargets() does not support THREE.Geometry. Use THREE.BufferGeometry instead.' );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n} );\n\nconst _start$1 = new Vector3();\nconst _end$1 = new Vector3();\n\nfunction LineSegments( geometry, material ) {\n\n\tLine.call( this, geometry, material );\n\n\tthis.type = 'LineSegments';\n\n}\n\nLineSegments.prototype = Object.assign( Object.create( Line.prototype ), {\n\n\tconstructor: LineSegments,\n\n\tisLineSegments: true,\n\n\tcomputeLineDistances: function () {\n\n\t\tconst geometry = this.geometry;\n\n\t\tif ( geometry.isBufferGeometry ) {\n\n\t\t\t// we assume non-indexed geometry\n\n\t\t\tif ( geometry.index === null ) {\n\n\t\t\t\tconst positionAttribute = geometry.attributes.position;\n\t\t\t\tconst lineDistances = [];\n\n\t\t\t\tfor ( let i = 0, l = positionAttribute.count; i < l; i += 2 ) {\n\n\t\t\t\t\t_start$1.fromBufferAttribute( positionAttribute, i );\n\t\t\t\t\t_end$1.fromBufferAttribute( positionAttribute, i + 1 );\n\n\t\t\t\t\tlineDistances[ i ] = ( i === 0 ) ? 0 : lineDistances[ i - 1 ];\n\t\t\t\t\tlineDistances[ i + 1 ] = lineDistances[ i ] + _start$1.distanceTo( _end$1 );\n\n\t\t\t\t}\n\n\t\t\t\tgeometry.setAttribute( 'lineDistance', new Float32BufferAttribute( lineDistances, 1 ) );\n\n\t\t\t} else {\n\n\t\t\t\tconsole.warn( 'THREE.LineSegments.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.' );\n\n\t\t\t}\n\n\t\t} else if ( geometry.isGeometry ) {\n\n\t\t\tconst vertices = geometry.vertices;\n\t\t\tconst lineDistances = geometry.lineDistances;\n\n\t\t\tfor ( let i = 0, l = vertices.length; i < l; i += 2 ) {\n\n\t\t\t\t_start$1.copy( vertices[ i ] );\n\t\t\t\t_end$1.copy( vertices[ i + 1 ] );\n\n\t\t\t\tlineDistances[ i ] = ( i === 0 ) ? 0 : lineDistances[ i - 1 ];\n\t\t\t\tlineDistances[ i + 1 ] = lineDistances[ i ] + _start$1.distanceTo( _end$1 );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n} );\n\nfunction LineLoop( geometry, material ) {\n\n\tLine.call( this, geometry, material );\n\n\tthis.type = 'LineLoop';\n\n}\n\nLineLoop.prototype = Object.assign( Object.create( Line.prototype ), {\n\n\tconstructor: LineLoop,\n\n\tisLineLoop: true,\n\n} );\n\n/**\n * parameters = {\n *  color: <hex>,\n *  opacity: <float>,\n *  map: new THREE.Texture( <Image> ),\n *  alphaMap: new THREE.Texture( <Image> ),\n *\n *  size: <float>,\n *  sizeAttenuation: <bool>\n *\n *  morphTargets: <bool>\n * }\n */\n\nfunction PointsMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.type = 'PointsMaterial';\n\n\tthis.color = new Color( 0xffffff );\n\n\tthis.map = null;\n\n\tthis.alphaMap = null;\n\n\tthis.size = 1;\n\tthis.sizeAttenuation = true;\n\n\tthis.morphTargets = false;\n\n\tthis.setValues( parameters );\n\n}\n\nPointsMaterial.prototype = Object.create( Material.prototype );\nPointsMaterial.prototype.constructor = PointsMaterial;\n\nPointsMaterial.prototype.isPointsMaterial = true;\n\nPointsMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.color.copy( source.color );\n\n\tthis.map = source.map;\n\n\tthis.alphaMap = source.alphaMap;\n\n\tthis.size = source.size;\n\tthis.sizeAttenuation = source.sizeAttenuation;\n\n\tthis.morphTargets = source.morphTargets;\n\n\treturn this;\n\n};\n\nconst _inverseMatrix$2 = new Matrix4();\nconst _ray$2 = new Ray();\nconst _sphere$3 = new Sphere();\nconst _position$1 = new Vector3();\n\nfunction Points( geometry = new BufferGeometry(), material = new PointsMaterial() ) {\n\n\tObject3D.call( this );\n\n\tthis.type = 'Points';\n\n\tthis.geometry = geometry;\n\tthis.material = material;\n\n\tthis.updateMorphTargets();\n\n}\n\nPoints.prototype = Object.assign( Object.create( Object3D.prototype ), {\n\n\tconstructor: Points,\n\n\tisPoints: true,\n\n\tcopy: function ( source ) {\n\n\t\tObject3D.prototype.copy.call( this, source );\n\n\t\tthis.material = source.material;\n\t\tthis.geometry = source.geometry;\n\n\t\treturn this;\n\n\t},\n\n\traycast: function ( raycaster, intersects ) {\n\n\t\tconst geometry = this.geometry;\n\t\tconst matrixWorld = this.matrixWorld;\n\t\tconst threshold = raycaster.params.Points.threshold;\n\n\t\t// Checking boundingSphere distance to ray\n\n\t\tif ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();\n\n\t\t_sphere$3.copy( geometry.boundingSphere );\n\t\t_sphere$3.applyMatrix4( matrixWorld );\n\t\t_sphere$3.radius += threshold;\n\n\t\tif ( raycaster.ray.intersectsSphere( _sphere$3 ) === false ) return;\n\n\t\t//\n\n\t\t_inverseMatrix$2.copy( matrixWorld ).invert();\n\t\t_ray$2.copy( raycaster.ray ).applyMatrix4( _inverseMatrix$2 );\n\n\t\tconst localThreshold = threshold / ( ( this.scale.x + this.scale.y + this.scale.z ) / 3 );\n\t\tconst localThresholdSq = localThreshold * localThreshold;\n\n\t\tif ( geometry.isBufferGeometry ) {\n\n\t\t\tconst index = geometry.index;\n\t\t\tconst attributes = geometry.attributes;\n\t\t\tconst positionAttribute = attributes.position;\n\n\t\t\tif ( index !== null ) {\n\n\t\t\t\tconst indices = index.array;\n\n\t\t\t\tfor ( let i = 0, il = indices.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst a = indices[ i ];\n\n\t\t\t\t\t_position$1.fromBufferAttribute( positionAttribute, a );\n\n\t\t\t\t\ttestPoint( _position$1, a, localThresholdSq, matrixWorld, raycaster, intersects, this );\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tfor ( let i = 0, l = positionAttribute.count; i < l; i ++ ) {\n\n\t\t\t\t\t_position$1.fromBufferAttribute( positionAttribute, i );\n\n\t\t\t\t\ttestPoint( _position$1, i, localThresholdSq, matrixWorld, raycaster, intersects, this );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tconst vertices = geometry.vertices;\n\n\t\t\tfor ( let i = 0, l = vertices.length; i < l; i ++ ) {\n\n\t\t\t\ttestPoint( vertices[ i ], i, localThresholdSq, matrixWorld, raycaster, intersects, this );\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\tupdateMorphTargets: function () {\n\n\t\tconst geometry = this.geometry;\n\n\t\tif ( geometry.isBufferGeometry ) {\n\n\t\t\tconst morphAttributes = geometry.morphAttributes;\n\t\t\tconst keys = Object.keys( morphAttributes );\n\n\t\t\tif ( keys.length > 0 ) {\n\n\t\t\t\tconst morphAttribute = morphAttributes[ keys[ 0 ] ];\n\n\t\t\t\tif ( morphAttribute !== undefined ) {\n\n\t\t\t\t\tthis.morphTargetInfluences = [];\n\t\t\t\t\tthis.morphTargetDictionary = {};\n\n\t\t\t\t\tfor ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {\n\n\t\t\t\t\t\tconst name = morphAttribute[ m ].name || String( m );\n\n\t\t\t\t\t\tthis.morphTargetInfluences.push( 0 );\n\t\t\t\t\t\tthis.morphTargetDictionary[ name ] = m;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tconst morphTargets = geometry.morphTargets;\n\n\t\t\tif ( morphTargets !== undefined && morphTargets.length > 0 ) {\n\n\t\t\t\tconsole.error( 'THREE.Points.updateMorphTargets() does not support THREE.Geometry. Use THREE.BufferGeometry instead.' );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n} );\n\nfunction testPoint( point, index, localThresholdSq, matrixWorld, raycaster, intersects, object ) {\n\n\tconst rayPointDistanceSq = _ray$2.distanceSqToPoint( point );\n\n\tif ( rayPointDistanceSq < localThresholdSq ) {\n\n\t\tconst intersectPoint = new Vector3();\n\n\t\t_ray$2.closestPointToPoint( point, intersectPoint );\n\t\tintersectPoint.applyMatrix4( matrixWorld );\n\n\t\tconst distance = raycaster.ray.origin.distanceTo( intersectPoint );\n\n\t\tif ( distance < raycaster.near || distance > raycaster.far ) return;\n\n\t\tintersects.push( {\n\n\t\t\tdistance: distance,\n\t\t\tdistanceToRay: Math.sqrt( rayPointDistanceSq ),\n\t\t\tpoint: intersectPoint,\n\t\t\tindex: index,\n\t\t\tface: null,\n\t\t\tobject: object\n\n\t\t} );\n\n\t}\n\n}\n\nfunction VideoTexture( video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {\n\n\tTexture.call( this, video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );\n\n\tthis.format = format !== undefined ? format : RGBFormat;\n\n\tthis.minFilter = minFilter !== undefined ? minFilter : LinearFilter;\n\tthis.magFilter = magFilter !== undefined ? magFilter : LinearFilter;\n\n\tthis.generateMipmaps = false;\n\n\tconst scope = this;\n\n\tfunction updateVideo() {\n\n\t\tscope.needsUpdate = true;\n\t\tvideo.requestVideoFrameCallback( updateVideo );\n\n\t}\n\n\tif ( 'requestVideoFrameCallback' in video ) {\n\n\t\tvideo.requestVideoFrameCallback( updateVideo );\n\n\t}\n\n}\n\nVideoTexture.prototype = Object.assign( Object.create( Texture.prototype ), {\n\n\tconstructor: VideoTexture,\n\n\tclone: function () {\n\n\t\treturn new this.constructor( this.image ).copy( this );\n\n\t},\n\n\tisVideoTexture: true,\n\n\tupdate: function () {\n\n\t\tconst video = this.image;\n\t\tconst hasVideoFrameCallback = 'requestVideoFrameCallback' in video;\n\n\t\tif ( hasVideoFrameCallback === false && video.readyState >= video.HAVE_CURRENT_DATA ) {\n\n\t\t\tthis.needsUpdate = true;\n\n\t\t}\n\n\t}\n\n} );\n\nfunction CompressedTexture( mipmaps, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, encoding ) {\n\n\tTexture.call( this, null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );\n\n\tthis.image = { width: width, height: height };\n\tthis.mipmaps = mipmaps;\n\n\t// no flipping for cube textures\n\t// (also flipping doesn't work for compressed textures )\n\n\tthis.flipY = false;\n\n\t// can't generate mipmaps for compressed textures\n\t// mips must be embedded in DDS files\n\n\tthis.generateMipmaps = false;\n\n}\n\nCompressedTexture.prototype = Object.create( Texture.prototype );\nCompressedTexture.prototype.constructor = CompressedTexture;\n\nCompressedTexture.prototype.isCompressedTexture = true;\n\nfunction CanvasTexture( canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {\n\n\tTexture.call( this, canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );\n\n\tthis.needsUpdate = true;\n\n}\n\nCanvasTexture.prototype = Object.create( Texture.prototype );\nCanvasTexture.prototype.constructor = CanvasTexture;\nCanvasTexture.prototype.isCanvasTexture = true;\n\nfunction DepthTexture( width, height, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, format ) {\n\n\tformat = format !== undefined ? format : DepthFormat;\n\n\tif ( format !== DepthFormat && format !== DepthStencilFormat ) {\n\n\t\tthrow new Error( 'DepthTexture format must be either THREE.DepthFormat or THREE.DepthStencilFormat' );\n\n\t}\n\n\tif ( type === undefined && format === DepthFormat ) type = UnsignedShortType;\n\tif ( type === undefined && format === DepthStencilFormat ) type = UnsignedInt248Type;\n\n\tTexture.call( this, null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );\n\n\tthis.image = { width: width, height: height };\n\n\tthis.magFilter = magFilter !== undefined ? magFilter : NearestFilter;\n\tthis.minFilter = minFilter !== undefined ? minFilter : NearestFilter;\n\n\tthis.flipY = false;\n\tthis.generateMipmaps = false;\n\n}\n\nDepthTexture.prototype = Object.create( Texture.prototype );\nDepthTexture.prototype.constructor = DepthTexture;\nDepthTexture.prototype.isDepthTexture = true;\n\nlet _geometryId = 0; // Geometry uses even numbers as Id\nconst _m1$3 = new Matrix4();\nconst _obj$1 = new Object3D();\nconst _offset$1 = new Vector3();\n\nfunction Geometry() {\n\n\tObject.defineProperty( this, 'id', { value: _geometryId += 2 } );\n\n\tthis.uuid = MathUtils.generateUUID();\n\n\tthis.name = '';\n\tthis.type = 'Geometry';\n\n\tthis.vertices = [];\n\tthis.colors = [];\n\tthis.faces = [];\n\tthis.faceVertexUvs = [[]];\n\n\tthis.morphTargets = [];\n\tthis.morphNormals = [];\n\n\tthis.skinWeights = [];\n\tthis.skinIndices = [];\n\n\tthis.lineDistances = [];\n\n\tthis.boundingBox = null;\n\tthis.boundingSphere = null;\n\n\t// update flags\n\n\tthis.elementsNeedUpdate = false;\n\tthis.verticesNeedUpdate = false;\n\tthis.uvsNeedUpdate = false;\n\tthis.normalsNeedUpdate = false;\n\tthis.colorsNeedUpdate = false;\n\tthis.lineDistancesNeedUpdate = false;\n\tthis.groupsNeedUpdate = false;\n\n}\n\nGeometry.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {\n\n\tconstructor: Geometry,\n\n\tisGeometry: true,\n\n\tapplyMatrix4: function ( matrix ) {\n\n\t\tconst normalMatrix = new Matrix3().getNormalMatrix( matrix );\n\n\t\tfor ( let i = 0, il = this.vertices.length; i < il; i ++ ) {\n\n\t\t\tconst vertex = this.vertices[ i ];\n\t\t\tvertex.applyMatrix4( matrix );\n\n\t\t}\n\n\t\tfor ( let i = 0, il = this.faces.length; i < il; i ++ ) {\n\n\t\t\tconst face = this.faces[ i ];\n\t\t\tface.normal.applyMatrix3( normalMatrix ).normalize();\n\n\t\t\tfor ( let j = 0, jl = face.vertexNormals.length; j < jl; j ++ ) {\n\n\t\t\t\tface.vertexNormals[ j ].applyMatrix3( normalMatrix ).normalize();\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( this.boundingBox !== null ) {\n\n\t\t\tthis.computeBoundingBox();\n\n\t\t}\n\n\t\tif ( this.boundingSphere !== null ) {\n\n\t\t\tthis.computeBoundingSphere();\n\n\t\t}\n\n\t\tthis.verticesNeedUpdate = true;\n\t\tthis.normalsNeedUpdate = true;\n\n\t\treturn this;\n\n\t},\n\n\trotateX: function ( angle ) {\n\n\t\t// rotate geometry around world x-axis\n\n\t\t_m1$3.makeRotationX( angle );\n\n\t\tthis.applyMatrix4( _m1$3 );\n\n\t\treturn this;\n\n\t},\n\n\trotateY: function ( angle ) {\n\n\t\t// rotate geometry around world y-axis\n\n\t\t_m1$3.makeRotationY( angle );\n\n\t\tthis.applyMatrix4( _m1$3 );\n\n\t\treturn this;\n\n\t},\n\n\trotateZ: function ( angle ) {\n\n\t\t// rotate geometry around world z-axis\n\n\t\t_m1$3.makeRotationZ( angle );\n\n\t\tthis.applyMatrix4( _m1$3 );\n\n\t\treturn this;\n\n\t},\n\n\ttranslate: function ( x, y, z ) {\n\n\t\t// translate geometry\n\n\t\t_m1$3.makeTranslation( x, y, z );\n\n\t\tthis.applyMatrix4( _m1$3 );\n\n\t\treturn this;\n\n\t},\n\n\tscale: function ( x, y, z ) {\n\n\t\t// scale geometry\n\n\t\t_m1$3.makeScale( x, y, z );\n\n\t\tthis.applyMatrix4( _m1$3 );\n\n\t\treturn this;\n\n\t},\n\n\tlookAt: function ( vector ) {\n\n\t\t_obj$1.lookAt( vector );\n\n\t\t_obj$1.updateMatrix();\n\n\t\tthis.applyMatrix4( _obj$1.matrix );\n\n\t\treturn this;\n\n\t},\n\n\tfromBufferGeometry: function ( geometry ) {\n\n\t\tconst scope = this;\n\n\t\tconst index = geometry.index !== null ? geometry.index : undefined;\n\t\tconst attributes = geometry.attributes;\n\n\t\tif ( attributes.position === undefined ) {\n\n\t\t\tconsole.error( 'THREE.Geometry.fromBufferGeometry(): Position attribute required for conversion.' );\n\t\t\treturn this;\n\n\t\t}\n\n\t\tconst position = attributes.position;\n\t\tconst normal = attributes.normal;\n\t\tconst color = attributes.color;\n\t\tconst uv = attributes.uv;\n\t\tconst uv2 = attributes.uv2;\n\n\t\tif ( uv2 !== undefined ) this.faceVertexUvs[ 1 ] = [];\n\n\t\tfor ( let i = 0; i < position.count; i ++ ) {\n\n\t\t\tscope.vertices.push( new Vector3().fromBufferAttribute( position, i ) );\n\n\t\t\tif ( color !== undefined ) {\n\n\t\t\t\tscope.colors.push( new Color().fromBufferAttribute( color, i ) );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction addFace( a, b, c, materialIndex ) {\n\n\t\t\tconst vertexColors = ( color === undefined ) ? [] : [\n\t\t\t\tscope.colors[ a ].clone(),\n\t\t\t\tscope.colors[ b ].clone(),\n\t\t\t\tscope.colors[ c ].clone()\n\t\t\t];\n\n\t\t\tconst vertexNormals = ( normal === undefined ) ? [] : [\n\t\t\t\tnew Vector3().fromBufferAttribute( normal, a ),\n\t\t\t\tnew Vector3().fromBufferAttribute( normal, b ),\n\t\t\t\tnew Vector3().fromBufferAttribute( normal, c )\n\t\t\t];\n\n\t\t\tconst face = new Face3( a, b, c, vertexNormals, vertexColors, materialIndex );\n\n\t\t\tscope.faces.push( face );\n\n\t\t\tif ( uv !== undefined ) {\n\n\t\t\t\tscope.faceVertexUvs[ 0 ].push( [\n\t\t\t\t\tnew Vector2().fromBufferAttribute( uv, a ),\n\t\t\t\t\tnew Vector2().fromBufferAttribute( uv, b ),\n\t\t\t\t\tnew Vector2().fromBufferAttribute( uv, c )\n\t\t\t\t] );\n\n\t\t\t}\n\n\t\t\tif ( uv2 !== undefined ) {\n\n\t\t\t\tscope.faceVertexUvs[ 1 ].push( [\n\t\t\t\t\tnew Vector2().fromBufferAttribute( uv2, a ),\n\t\t\t\t\tnew Vector2().fromBufferAttribute( uv2, b ),\n\t\t\t\t\tnew Vector2().fromBufferAttribute( uv2, c )\n\t\t\t\t] );\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst groups = geometry.groups;\n\n\t\tif ( groups.length > 0 ) {\n\n\t\t\tfor ( let i = 0; i < groups.length; i ++ ) {\n\n\t\t\t\tconst group = groups[ i ];\n\n\t\t\t\tconst start = group.start;\n\t\t\t\tconst count = group.count;\n\n\t\t\t\tfor ( let j = start, jl = start + count; j < jl; j += 3 ) {\n\n\t\t\t\t\tif ( index !== undefined ) {\n\n\t\t\t\t\t\taddFace( index.getX( j ), index.getX( j + 1 ), index.getX( j + 2 ), group.materialIndex );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\taddFace( j, j + 1, j + 2, group.materialIndex );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tif ( index !== undefined ) {\n\n\t\t\t\tfor ( let i = 0; i < index.count; i += 3 ) {\n\n\t\t\t\t\taddFace( index.getX( i ), index.getX( i + 1 ), index.getX( i + 2 ) );\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tfor ( let i = 0; i < position.count; i += 3 ) {\n\n\t\t\t\t\taddFace( i, i + 1, i + 2 );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis.computeFaceNormals();\n\n\t\tif ( geometry.boundingBox !== null ) {\n\n\t\t\tthis.boundingBox = geometry.boundingBox.clone();\n\n\t\t}\n\n\t\tif ( geometry.boundingSphere !== null ) {\n\n\t\t\tthis.boundingSphere = geometry.boundingSphere.clone();\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tcenter: function () {\n\n\t\tthis.computeBoundingBox();\n\n\t\tthis.boundingBox.getCenter( _offset$1 ).negate();\n\n\t\tthis.translate( _offset$1.x, _offset$1.y, _offset$1.z );\n\n\t\treturn this;\n\n\t},\n\n\tnormalize: function () {\n\n\t\tthis.computeBoundingSphere();\n\n\t\tconst center = this.boundingSphere.center;\n\t\tconst radius = this.boundingSphere.radius;\n\n\t\tconst s = radius === 0 ? 1 : 1.0 / radius;\n\n\t\tconst matrix = new Matrix4();\n\t\tmatrix.set(\n\t\t\ts, 0, 0, - s * center.x,\n\t\t\t0, s, 0, - s * center.y,\n\t\t\t0, 0, s, - s * center.z,\n\t\t\t0, 0, 0, 1\n\t\t);\n\n\t\tthis.applyMatrix4( matrix );\n\n\t\treturn this;\n\n\t},\n\n\tcomputeFaceNormals: function () {\n\n\t\tconst cb = new Vector3(), ab = new Vector3();\n\n\t\tfor ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {\n\n\t\t\tconst face = this.faces[ f ];\n\n\t\t\tconst vA = this.vertices[ face.a ];\n\t\t\tconst vB = this.vertices[ face.b ];\n\t\t\tconst vC = this.vertices[ face.c ];\n\n\t\t\tcb.subVectors( vC, vB );\n\t\t\tab.subVectors( vA, vB );\n\t\t\tcb.cross( ab );\n\n\t\t\tcb.normalize();\n\n\t\t\tface.normal.copy( cb );\n\n\t\t}\n\n\t},\n\n\tcomputeVertexNormals: function ( areaWeighted = true ) {\n\n\t\tconst vertices = new Array( this.vertices.length );\n\n\t\tfor ( let v = 0, vl = this.vertices.length; v < vl; v ++ ) {\n\n\t\t\tvertices[ v ] = new Vector3();\n\n\t\t}\n\n\t\tif ( areaWeighted ) {\n\n\t\t\t// vertex normals weighted by triangle areas\n\t\t\t// http://www.iquilezles.org/www/articles/normals/normals.htm\n\n\t\t\tconst cb = new Vector3(), ab = new Vector3();\n\n\t\t\tfor ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {\n\n\t\t\t\tconst face = this.faces[ f ];\n\n\t\t\t\tconst vA = this.vertices[ face.a ];\n\t\t\t\tconst vB = this.vertices[ face.b ];\n\t\t\t\tconst vC = this.vertices[ face.c ];\n\n\t\t\t\tcb.subVectors( vC, vB );\n\t\t\t\tab.subVectors( vA, vB );\n\t\t\t\tcb.cross( ab );\n\n\t\t\t\tvertices[ face.a ].add( cb );\n\t\t\t\tvertices[ face.b ].add( cb );\n\t\t\t\tvertices[ face.c ].add( cb );\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tthis.computeFaceNormals();\n\n\t\t\tfor ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {\n\n\t\t\t\tconst face = this.faces[ f ];\n\n\t\t\t\tvertices[ face.a ].add( face.normal );\n\t\t\t\tvertices[ face.b ].add( face.normal );\n\t\t\t\tvertices[ face.c ].add( face.normal );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfor ( let v = 0, vl = this.vertices.length; v < vl; v ++ ) {\n\n\t\t\tvertices[ v ].normalize();\n\n\t\t}\n\n\t\tfor ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {\n\n\t\t\tconst face = this.faces[ f ];\n\n\t\t\tconst vertexNormals = face.vertexNormals;\n\n\t\t\tif ( vertexNormals.length === 3 ) {\n\n\t\t\t\tvertexNormals[ 0 ].copy( vertices[ face.a ] );\n\t\t\t\tvertexNormals[ 1 ].copy( vertices[ face.b ] );\n\t\t\t\tvertexNormals[ 2 ].copy( vertices[ face.c ] );\n\n\t\t\t} else {\n\n\t\t\t\tvertexNormals[ 0 ] = vertices[ face.a ].clone();\n\t\t\t\tvertexNormals[ 1 ] = vertices[ face.b ].clone();\n\t\t\t\tvertexNormals[ 2 ] = vertices[ face.c ].clone();\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( this.faces.length > 0 ) {\n\n\t\t\tthis.normalsNeedUpdate = true;\n\n\t\t}\n\n\t},\n\n\tcomputeFlatVertexNormals: function () {\n\n\t\tthis.computeFaceNormals();\n\n\t\tfor ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {\n\n\t\t\tconst face = this.faces[ f ];\n\n\t\t\tconst vertexNormals = face.vertexNormals;\n\n\t\t\tif ( vertexNormals.length === 3 ) {\n\n\t\t\t\tvertexNormals[ 0 ].copy( face.normal );\n\t\t\t\tvertexNormals[ 1 ].copy( face.normal );\n\t\t\t\tvertexNormals[ 2 ].copy( face.normal );\n\n\t\t\t} else {\n\n\t\t\t\tvertexNormals[ 0 ] = face.normal.clone();\n\t\t\t\tvertexNormals[ 1 ] = face.normal.clone();\n\t\t\t\tvertexNormals[ 2 ] = face.normal.clone();\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( this.faces.length > 0 ) {\n\n\t\t\tthis.normalsNeedUpdate = true;\n\n\t\t}\n\n\t},\n\n\tcomputeMorphNormals: function () {\n\n\t\t// save original normals\n\t\t// - create temp variables on first access\n\t\t//   otherwise just copy (for faster repeated calls)\n\n\t\tfor ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {\n\n\t\t\tconst face = this.faces[ f ];\n\n\t\t\tif ( ! face.__originalFaceNormal ) {\n\n\t\t\t\tface.__originalFaceNormal = face.normal.clone();\n\n\t\t\t} else {\n\n\t\t\t\tface.__originalFaceNormal.copy( face.normal );\n\n\t\t\t}\n\n\t\t\tif ( ! face.__originalVertexNormals ) face.__originalVertexNormals = [];\n\n\t\t\tfor ( let i = 0, il = face.vertexNormals.length; i < il; i ++ ) {\n\n\t\t\t\tif ( ! face.__originalVertexNormals[ i ] ) {\n\n\t\t\t\t\tface.__originalVertexNormals[ i ] = face.vertexNormals[ i ].clone();\n\n\t\t\t\t} else {\n\n\t\t\t\t\tface.__originalVertexNormals[ i ].copy( face.vertexNormals[ i ] );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\t// use temp geometry to compute face and vertex normals for each morph\n\n\t\tconst tmpGeo = new Geometry();\n\t\ttmpGeo.faces = this.faces;\n\n\t\tfor ( let i = 0, il = this.morphTargets.length; i < il; i ++ ) {\n\n\t\t\t// create on first access\n\n\t\t\tif ( ! this.morphNormals[ i ] ) {\n\n\t\t\t\tthis.morphNormals[ i ] = {};\n\t\t\t\tthis.morphNormals[ i ].faceNormals = [];\n\t\t\t\tthis.morphNormals[ i ].vertexNormals = [];\n\n\t\t\t\tconst dstNormalsFace = this.morphNormals[ i ].faceNormals;\n\t\t\t\tconst dstNormalsVertex = this.morphNormals[ i ].vertexNormals;\n\n\t\t\t\tfor ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {\n\n\t\t\t\t\tconst faceNormal = new Vector3();\n\t\t\t\t\tconst vertexNormals = { a: new Vector3(), b: new Vector3(), c: new Vector3() };\n\n\t\t\t\t\tdstNormalsFace.push( faceNormal );\n\t\t\t\t\tdstNormalsVertex.push( vertexNormals );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tconst morphNormals = this.morphNormals[ i ];\n\n\t\t\t// set vertices to morph target\n\n\t\t\ttmpGeo.vertices = this.morphTargets[ i ].vertices;\n\n\t\t\t// compute morph normals\n\n\t\t\ttmpGeo.computeFaceNormals();\n\t\t\ttmpGeo.computeVertexNormals();\n\n\t\t\t// store morph normals\n\n\t\t\tfor ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {\n\n\t\t\t\tconst face = this.faces[ f ];\n\n\t\t\t\tconst faceNormal = morphNormals.faceNormals[ f ];\n\t\t\t\tconst vertexNormals = morphNormals.vertexNormals[ f ];\n\n\t\t\t\tfaceNormal.copy( face.normal );\n\n\t\t\t\tvertexNormals.a.copy( face.vertexNormals[ 0 ] );\n\t\t\t\tvertexNormals.b.copy( face.vertexNormals[ 1 ] );\n\t\t\t\tvertexNormals.c.copy( face.vertexNormals[ 2 ] );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// restore original normals\n\n\t\tfor ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {\n\n\t\t\tconst face = this.faces[ f ];\n\n\t\t\tface.normal = face.__originalFaceNormal;\n\t\t\tface.vertexNormals = face.__originalVertexNormals;\n\n\t\t}\n\n\t},\n\n\tcomputeBoundingBox: function () {\n\n\t\tif ( this.boundingBox === null ) {\n\n\t\t\tthis.boundingBox = new Box3();\n\n\t\t}\n\n\t\tthis.boundingBox.setFromPoints( this.vertices );\n\n\t},\n\n\tcomputeBoundingSphere: function () {\n\n\t\tif ( this.boundingSphere === null ) {\n\n\t\t\tthis.boundingSphere = new Sphere();\n\n\t\t}\n\n\t\tthis.boundingSphere.setFromPoints( this.vertices );\n\n\t},\n\n\tmerge: function ( geometry, matrix, materialIndexOffset = 0 ) {\n\n\t\tif ( ! ( geometry && geometry.isGeometry ) ) {\n\n\t\t\tconsole.error( 'THREE.Geometry.merge(): geometry not an instance of THREE.Geometry.', geometry );\n\t\t\treturn;\n\n\t\t}\n\n\t\tlet normalMatrix;\n\t\tconst vertexOffset = this.vertices.length,\n\t\t\tvertices1 = this.vertices,\n\t\t\tvertices2 = geometry.vertices,\n\t\t\tfaces1 = this.faces,\n\t\t\tfaces2 = geometry.faces,\n\t\t\tcolors1 = this.colors,\n\t\t\tcolors2 = geometry.colors;\n\n\t\tif ( matrix !== undefined ) {\n\n\t\t\tnormalMatrix = new Matrix3().getNormalMatrix( matrix );\n\n\t\t}\n\n\t\t// vertices\n\n\t\tfor ( let i = 0, il = vertices2.length; i < il; i ++ ) {\n\n\t\t\tconst vertex = vertices2[ i ];\n\n\t\t\tconst vertexCopy = vertex.clone();\n\n\t\t\tif ( matrix !== undefined ) vertexCopy.applyMatrix4( matrix );\n\n\t\t\tvertices1.push( vertexCopy );\n\n\t\t}\n\n\t\t// colors\n\n\t\tfor ( let i = 0, il = colors2.length; i < il; i ++ ) {\n\n\t\t\tcolors1.push( colors2[ i ].clone() );\n\n\t\t}\n\n\t\t// faces\n\n\t\tfor ( let i = 0, il = faces2.length; i < il; i ++ ) {\n\n\t\t\tconst face = faces2[ i ];\n\t\t\tlet normal, color;\n\t\t\tconst faceVertexNormals = face.vertexNormals,\n\t\t\t\tfaceVertexColors = face.vertexColors;\n\n\t\t\tconst faceCopy = new Face3( face.a + vertexOffset, face.b + vertexOffset, face.c + vertexOffset );\n\t\t\tfaceCopy.normal.copy( face.normal );\n\n\t\t\tif ( normalMatrix !== undefined ) {\n\n\t\t\t\tfaceCopy.normal.applyMatrix3( normalMatrix ).normalize();\n\n\t\t\t}\n\n\t\t\tfor ( let j = 0, jl = faceVertexNormals.length; j < jl; j ++ ) {\n\n\t\t\t\tnormal = faceVertexNormals[ j ].clone();\n\n\t\t\t\tif ( normalMatrix !== undefined ) {\n\n\t\t\t\t\tnormal.applyMatrix3( normalMatrix ).normalize();\n\n\t\t\t\t}\n\n\t\t\t\tfaceCopy.vertexNormals.push( normal );\n\n\t\t\t}\n\n\t\t\tfaceCopy.color.copy( face.color );\n\n\t\t\tfor ( let j = 0, jl = faceVertexColors.length; j < jl; j ++ ) {\n\n\t\t\t\tcolor = faceVertexColors[ j ];\n\t\t\t\tfaceCopy.vertexColors.push( color.clone() );\n\n\t\t\t}\n\n\t\t\tfaceCopy.materialIndex = face.materialIndex + materialIndexOffset;\n\n\t\t\tfaces1.push( faceCopy );\n\n\t\t}\n\n\t\t// uvs\n\n\t\tfor ( let i = 0, il = geometry.faceVertexUvs.length; i < il; i ++ ) {\n\n\t\t\tconst faceVertexUvs2 = geometry.faceVertexUvs[ i ];\n\n\t\t\tif ( this.faceVertexUvs[ i ] === undefined ) this.faceVertexUvs[ i ] = [];\n\n\t\t\tfor ( let j = 0, jl = faceVertexUvs2.length; j < jl; j ++ ) {\n\n\t\t\t\tconst uvs2 = faceVertexUvs2[ j ], uvsCopy = [];\n\n\t\t\t\tfor ( let k = 0, kl = uvs2.length; k < kl; k ++ ) {\n\n\t\t\t\t\tuvsCopy.push( uvs2[ k ].clone() );\n\n\t\t\t\t}\n\n\t\t\t\tthis.faceVertexUvs[ i ].push( uvsCopy );\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\tmergeMesh: function ( mesh ) {\n\n\t\tif ( ! ( mesh && mesh.isMesh ) ) {\n\n\t\t\tconsole.error( 'THREE.Geometry.mergeMesh(): mesh not an instance of THREE.Mesh.', mesh );\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( mesh.matrixAutoUpdate ) mesh.updateMatrix();\n\n\t\tthis.merge( mesh.geometry, mesh.matrix );\n\n\t},\n\n\t/*\n\t * Checks for duplicate vertices with hashmap.\n\t * Duplicated vertices are removed\n\t * and faces' vertices are updated.\n\t */\n\n\tmergeVertices: function ( precisionPoints = 4 ) {\n\n\t\tconst verticesMap = {}; // Hashmap for looking up vertices by position coordinates (and making sure they are unique)\n\t\tconst unique = [], changes = [];\n\n\t\tconst precision = Math.pow( 10, precisionPoints );\n\n\t\tfor ( let i = 0, il = this.vertices.length; i < il; i ++ ) {\n\n\t\t\tconst v = this.vertices[ i ];\n\t\t\tconst key = Math.round( v.x * precision ) + '_' + Math.round( v.y * precision ) + '_' + Math.round( v.z * precision );\n\n\t\t\tif ( verticesMap[ key ] === undefined ) {\n\n\t\t\t\tverticesMap[ key ] = i;\n\t\t\t\tunique.push( this.vertices[ i ] );\n\t\t\t\tchanges[ i ] = unique.length - 1;\n\n\t\t\t} else {\n\n\t\t\t\t//console.log('Duplicate vertex found. ', i, ' could be using ', verticesMap[key]);\n\t\t\t\tchanges[ i ] = changes[ verticesMap[ key ] ];\n\n\t\t\t}\n\n\t\t}\n\n\n\t\t// if faces are completely degenerate after merging vertices, we\n\t\t// have to remove them from the geometry.\n\t\tconst faceIndicesToRemove = [];\n\n\t\tfor ( let i = 0, il = this.faces.length; i < il; i ++ ) {\n\n\t\t\tconst face = this.faces[ i ];\n\n\t\t\tface.a = changes[ face.a ];\n\t\t\tface.b = changes[ face.b ];\n\t\t\tface.c = changes[ face.c ];\n\n\t\t\tconst indices = [ face.a, face.b, face.c ];\n\n\t\t\t// if any duplicate vertices are found in a Face3\n\t\t\t// we have to remove the face as nothing can be saved\n\t\t\tfor ( let n = 0; n < 3; n ++ ) {\n\n\t\t\t\tif ( indices[ n ] === indices[ ( n + 1 ) % 3 ] ) {\n\n\t\t\t\t\tfaceIndicesToRemove.push( i );\n\t\t\t\t\tbreak;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tfor ( let i = faceIndicesToRemove.length - 1; i >= 0; i -- ) {\n\n\t\t\tconst idx = faceIndicesToRemove[ i ];\n\n\t\t\tthis.faces.splice( idx, 1 );\n\n\t\t\tfor ( let j = 0, jl = this.faceVertexUvs.length; j < jl; j ++ ) {\n\n\t\t\t\tthis.faceVertexUvs[ j ].splice( idx, 1 );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// Use unique set of vertices\n\n\t\tconst diff = this.vertices.length - unique.length;\n\t\tthis.vertices = unique;\n\t\treturn diff;\n\n\t},\n\n\tsetFromPoints: function ( points ) {\n\n\t\tthis.vertices = [];\n\n\t\tfor ( let i = 0, l = points.length; i < l; i ++ ) {\n\n\t\t\tconst point = points[ i ];\n\t\t\tthis.vertices.push( new Vector3( point.x, point.y, point.z || 0 ) );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tsortFacesByMaterialIndex: function () {\n\n\t\tconst faces = this.faces;\n\t\tconst length = faces.length;\n\n\t\t// tag faces\n\n\t\tfor ( let i = 0; i < length; i ++ ) {\n\n\t\t\tfaces[ i ]._id = i;\n\n\t\t}\n\n\t\t// sort faces\n\n\t\tfunction materialIndexSort( a, b ) {\n\n\t\t\treturn a.materialIndex - b.materialIndex;\n\n\t\t}\n\n\t\tfaces.sort( materialIndexSort );\n\n\t\t// sort uvs\n\n\t\tconst uvs1 = this.faceVertexUvs[ 0 ];\n\t\tconst uvs2 = this.faceVertexUvs[ 1 ];\n\n\t\tlet newUvs1, newUvs2;\n\n\t\tif ( uvs1 && uvs1.length === length ) newUvs1 = [];\n\t\tif ( uvs2 && uvs2.length === length ) newUvs2 = [];\n\n\t\tfor ( let i = 0; i < length; i ++ ) {\n\n\t\t\tconst id = faces[ i ]._id;\n\n\t\t\tif ( newUvs1 ) newUvs1.push( uvs1[ id ] );\n\t\t\tif ( newUvs2 ) newUvs2.push( uvs2[ id ] );\n\n\t\t}\n\n\t\tif ( newUvs1 ) this.faceVertexUvs[ 0 ] = newUvs1;\n\t\tif ( newUvs2 ) this.faceVertexUvs[ 1 ] = newUvs2;\n\n\t},\n\n\ttoJSON: function () {\n\n\t\tconst data = {\n\t\t\tmetadata: {\n\t\t\t\tversion: 4.5,\n\t\t\t\ttype: 'Geometry',\n\t\t\t\tgenerator: 'Geometry.toJSON'\n\t\t\t}\n\t\t};\n\n\t\t// standard Geometry serialization\n\n\t\tdata.uuid = this.uuid;\n\t\tdata.type = this.type;\n\t\tif ( this.name !== '' ) data.name = this.name;\n\n\t\tif ( this.parameters !== undefined ) {\n\n\t\t\tconst parameters = this.parameters;\n\n\t\t\tfor ( const key in parameters ) {\n\n\t\t\t\tif ( parameters[ key ] !== undefined ) data[ key ] = parameters[ key ];\n\n\t\t\t}\n\n\t\t\treturn data;\n\n\t\t}\n\n\t\tconst vertices = [];\n\n\t\tfor ( let i = 0; i < this.vertices.length; i ++ ) {\n\n\t\t\tconst vertex = this.vertices[ i ];\n\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t}\n\n\t\tconst faces = [];\n\t\tconst normals = [];\n\t\tconst normalsHash = {};\n\t\tconst colors = [];\n\t\tconst colorsHash = {};\n\t\tconst uvs = [];\n\t\tconst uvsHash = {};\n\n\t\tfor ( let i = 0; i < this.faces.length; i ++ ) {\n\n\t\t\tconst face = this.faces[ i ];\n\n\t\t\tconst hasMaterial = true;\n\t\t\tconst hasFaceUv = false; // deprecated\n\t\t\tconst hasFaceVertexUv = this.faceVertexUvs[ 0 ][ i ] !== undefined;\n\t\t\tconst hasFaceNormal = face.normal.length() > 0;\n\t\t\tconst hasFaceVertexNormal = face.vertexNormals.length > 0;\n\t\t\tconst hasFaceColor = face.color.r !== 1 || face.color.g !== 1 || face.color.b !== 1;\n\t\t\tconst hasFaceVertexColor = face.vertexColors.length > 0;\n\n\t\t\tlet faceType = 0;\n\n\t\t\tfaceType = setBit( faceType, 0, 0 ); // isQuad\n\t\t\tfaceType = setBit( faceType, 1, hasMaterial );\n\t\t\tfaceType = setBit( faceType, 2, hasFaceUv );\n\t\t\tfaceType = setBit( faceType, 3, hasFaceVertexUv );\n\t\t\tfaceType = setBit( faceType, 4, hasFaceNormal );\n\t\t\tfaceType = setBit( faceType, 5, hasFaceVertexNormal );\n\t\t\tfaceType = setBit( faceType, 6, hasFaceColor );\n\t\t\tfaceType = setBit( faceType, 7, hasFaceVertexColor );\n\n\t\t\tfaces.push( faceType );\n\t\t\tfaces.push( face.a, face.b, face.c );\n\t\t\tfaces.push( face.materialIndex );\n\n\t\t\tif ( hasFaceVertexUv ) {\n\n\t\t\t\tconst faceVertexUvs = this.faceVertexUvs[ 0 ][ i ];\n\n\t\t\t\tfaces.push(\n\t\t\t\t\tgetUvIndex( faceVertexUvs[ 0 ] ),\n\t\t\t\t\tgetUvIndex( faceVertexUvs[ 1 ] ),\n\t\t\t\t\tgetUvIndex( faceVertexUvs[ 2 ] )\n\t\t\t\t);\n\n\t\t\t}\n\n\t\t\tif ( hasFaceNormal ) {\n\n\t\t\t\tfaces.push( getNormalIndex( face.normal ) );\n\n\t\t\t}\n\n\t\t\tif ( hasFaceVertexNormal ) {\n\n\t\t\t\tconst vertexNormals = face.vertexNormals;\n\n\t\t\t\tfaces.push(\n\t\t\t\t\tgetNormalIndex( vertexNormals[ 0 ] ),\n\t\t\t\t\tgetNormalIndex( vertexNormals[ 1 ] ),\n\t\t\t\t\tgetNormalIndex( vertexNormals[ 2 ] )\n\t\t\t\t);\n\n\t\t\t}\n\n\t\t\tif ( hasFaceColor ) {\n\n\t\t\t\tfaces.push( getColorIndex( face.color ) );\n\n\t\t\t}\n\n\t\t\tif ( hasFaceVertexColor ) {\n\n\t\t\t\tconst vertexColors = face.vertexColors;\n\n\t\t\t\tfaces.push(\n\t\t\t\t\tgetColorIndex( vertexColors[ 0 ] ),\n\t\t\t\t\tgetColorIndex( vertexColors[ 1 ] ),\n\t\t\t\t\tgetColorIndex( vertexColors[ 2 ] )\n\t\t\t\t);\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction setBit( value, position, enabled ) {\n\n\t\t\treturn enabled ? value | ( 1 << position ) : value & ( ~ ( 1 << position ) );\n\n\t\t}\n\n\t\tfunction getNormalIndex( normal ) {\n\n\t\t\tconst hash = normal.x.toString() + normal.y.toString() + normal.z.toString();\n\n\t\t\tif ( normalsHash[ hash ] !== undefined ) {\n\n\t\t\t\treturn normalsHash[ hash ];\n\n\t\t\t}\n\n\t\t\tnormalsHash[ hash ] = normals.length / 3;\n\t\t\tnormals.push( normal.x, normal.y, normal.z );\n\n\t\t\treturn normalsHash[ hash ];\n\n\t\t}\n\n\t\tfunction getColorIndex( color ) {\n\n\t\t\tconst hash = color.r.toString() + color.g.toString() + color.b.toString();\n\n\t\t\tif ( colorsHash[ hash ] !== undefined ) {\n\n\t\t\t\treturn colorsHash[ hash ];\n\n\t\t\t}\n\n\t\t\tcolorsHash[ hash ] = colors.length;\n\t\t\tcolors.push( color.getHex() );\n\n\t\t\treturn colorsHash[ hash ];\n\n\t\t}\n\n\t\tfunction getUvIndex( uv ) {\n\n\t\t\tconst hash = uv.x.toString() + uv.y.toString();\n\n\t\t\tif ( uvsHash[ hash ] !== undefined ) {\n\n\t\t\t\treturn uvsHash[ hash ];\n\n\t\t\t}\n\n\t\t\tuvsHash[ hash ] = uvs.length / 2;\n\t\t\tuvs.push( uv.x, uv.y );\n\n\t\t\treturn uvsHash[ hash ];\n\n\t\t}\n\n\t\tdata.data = {};\n\n\t\tdata.data.vertices = vertices;\n\t\tdata.data.normals = normals;\n\t\tif ( colors.length > 0 ) data.data.colors = colors;\n\t\tif ( uvs.length > 0 ) data.data.uvs = [ uvs ]; // temporal backward compatibility\n\t\tdata.data.faces = faces;\n\n\t\treturn data;\n\n\t},\n\n\tclone: function () {\n\n\t\t/*\n\t\t // Handle primitives\n\n\t\t const parameters = this.parameters;\n\n\t\t if ( parameters !== undefined ) {\n\n\t\t const values = [];\n\n\t\t for ( const key in parameters ) {\n\n\t\t values.push( parameters[ key ] );\n\n\t\t }\n\n\t\t const geometry = Object.create( this.constructor.prototype );\n\t\t this.constructor.apply( geometry, values );\n\t\t return geometry;\n\n\t\t }\n\n\t\t return new this.constructor().copy( this );\n\t\t */\n\n\t\treturn new Geometry().copy( this );\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\t// reset\n\n\t\tthis.vertices = [];\n\t\tthis.colors = [];\n\t\tthis.faces = [];\n\t\tthis.faceVertexUvs = [[]];\n\t\tthis.morphTargets = [];\n\t\tthis.morphNormals = [];\n\t\tthis.skinWeights = [];\n\t\tthis.skinIndices = [];\n\t\tthis.lineDistances = [];\n\t\tthis.boundingBox = null;\n\t\tthis.boundingSphere = null;\n\n\t\t// name\n\n\t\tthis.name = source.name;\n\n\t\t// vertices\n\n\t\tconst vertices = source.vertices;\n\n\t\tfor ( let i = 0, il = vertices.length; i < il; i ++ ) {\n\n\t\t\tthis.vertices.push( vertices[ i ].clone() );\n\n\t\t}\n\n\t\t// colors\n\n\t\tconst colors = source.colors;\n\n\t\tfor ( let i = 0, il = colors.length; i < il; i ++ ) {\n\n\t\t\tthis.colors.push( colors[ i ].clone() );\n\n\t\t}\n\n\t\t// faces\n\n\t\tconst faces = source.faces;\n\n\t\tfor ( let i = 0, il = faces.length; i < il; i ++ ) {\n\n\t\t\tthis.faces.push( faces[ i ].clone() );\n\n\t\t}\n\n\t\t// face vertex uvs\n\n\t\tfor ( let i = 0, il = source.faceVertexUvs.length; i < il; i ++ ) {\n\n\t\t\tconst faceVertexUvs = source.faceVertexUvs[ i ];\n\n\t\t\tif ( this.faceVertexUvs[ i ] === undefined ) {\n\n\t\t\t\tthis.faceVertexUvs[ i ] = [];\n\n\t\t\t}\n\n\t\t\tfor ( let j = 0, jl = faceVertexUvs.length; j < jl; j ++ ) {\n\n\t\t\t\tconst uvs = faceVertexUvs[ j ], uvsCopy = [];\n\n\t\t\t\tfor ( let k = 0, kl = uvs.length; k < kl; k ++ ) {\n\n\t\t\t\t\tconst uv = uvs[ k ];\n\n\t\t\t\t\tuvsCopy.push( uv.clone() );\n\n\t\t\t\t}\n\n\t\t\t\tthis.faceVertexUvs[ i ].push( uvsCopy );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// morph targets\n\n\t\tconst morphTargets = source.morphTargets;\n\n\t\tfor ( let i = 0, il = morphTargets.length; i < il; i ++ ) {\n\n\t\t\tconst morphTarget = {};\n\t\t\tmorphTarget.name = morphTargets[ i ].name;\n\n\t\t\t// vertices\n\n\t\t\tif ( morphTargets[ i ].vertices !== undefined ) {\n\n\t\t\t\tmorphTarget.vertices = [];\n\n\t\t\t\tfor ( let j = 0, jl = morphTargets[ i ].vertices.length; j < jl; j ++ ) {\n\n\t\t\t\t\tmorphTarget.vertices.push( morphTargets[ i ].vertices[ j ].clone() );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// normals\n\n\t\t\tif ( morphTargets[ i ].normals !== undefined ) {\n\n\t\t\t\tmorphTarget.normals = [];\n\n\t\t\t\tfor ( let j = 0, jl = morphTargets[ i ].normals.length; j < jl; j ++ ) {\n\n\t\t\t\t\tmorphTarget.normals.push( morphTargets[ i ].normals[ j ].clone() );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tthis.morphTargets.push( morphTarget );\n\n\t\t}\n\n\t\t// morph normals\n\n\t\tconst morphNormals = source.morphNormals;\n\n\t\tfor ( let i = 0, il = morphNormals.length; i < il; i ++ ) {\n\n\t\t\tconst morphNormal = {};\n\n\t\t\t// vertex normals\n\n\t\t\tif ( morphNormals[ i ].vertexNormals !== undefined ) {\n\n\t\t\t\tmorphNormal.vertexNormals = [];\n\n\t\t\t\tfor ( let j = 0, jl = morphNormals[ i ].vertexNormals.length; j < jl; j ++ ) {\n\n\t\t\t\t\tconst srcVertexNormal = morphNormals[ i ].vertexNormals[ j ];\n\t\t\t\t\tconst destVertexNormal = {};\n\n\t\t\t\t\tdestVertexNormal.a = srcVertexNormal.a.clone();\n\t\t\t\t\tdestVertexNormal.b = srcVertexNormal.b.clone();\n\t\t\t\t\tdestVertexNormal.c = srcVertexNormal.c.clone();\n\n\t\t\t\t\tmorphNormal.vertexNormals.push( destVertexNormal );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// face normals\n\n\t\t\tif ( morphNormals[ i ].faceNormals !== undefined ) {\n\n\t\t\t\tmorphNormal.faceNormals = [];\n\n\t\t\t\tfor ( let j = 0, jl = morphNormals[ i ].faceNormals.length; j < jl; j ++ ) {\n\n\t\t\t\t\tmorphNormal.faceNormals.push( morphNormals[ i ].faceNormals[ j ].clone() );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tthis.morphNormals.push( morphNormal );\n\n\t\t}\n\n\t\t// skin weights\n\n\t\tconst skinWeights = source.skinWeights;\n\n\t\tfor ( let i = 0, il = skinWeights.length; i < il; i ++ ) {\n\n\t\t\tthis.skinWeights.push( skinWeights[ i ].clone() );\n\n\t\t}\n\n\t\t// skin indices\n\n\t\tconst skinIndices = source.skinIndices;\n\n\t\tfor ( let i = 0, il = skinIndices.length; i < il; i ++ ) {\n\n\t\t\tthis.skinIndices.push( skinIndices[ i ].clone() );\n\n\t\t}\n\n\t\t// line distances\n\n\t\tconst lineDistances = source.lineDistances;\n\n\t\tfor ( let i = 0, il = lineDistances.length; i < il; i ++ ) {\n\n\t\t\tthis.lineDistances.push( lineDistances[ i ] );\n\n\t\t}\n\n\t\t// bounding box\n\n\t\tconst boundingBox = source.boundingBox;\n\n\t\tif ( boundingBox !== null ) {\n\n\t\t\tthis.boundingBox = boundingBox.clone();\n\n\t\t}\n\n\t\t// bounding sphere\n\n\t\tconst boundingSphere = source.boundingSphere;\n\n\t\tif ( boundingSphere !== null ) {\n\n\t\t\tthis.boundingSphere = boundingSphere.clone();\n\n\t\t}\n\n\t\t// update flags\n\n\t\tthis.elementsNeedUpdate = source.elementsNeedUpdate;\n\t\tthis.verticesNeedUpdate = source.verticesNeedUpdate;\n\t\tthis.uvsNeedUpdate = source.uvsNeedUpdate;\n\t\tthis.normalsNeedUpdate = source.normalsNeedUpdate;\n\t\tthis.colorsNeedUpdate = source.colorsNeedUpdate;\n\t\tthis.lineDistancesNeedUpdate = source.lineDistancesNeedUpdate;\n\t\tthis.groupsNeedUpdate = source.groupsNeedUpdate;\n\n\t\treturn this;\n\n\t},\n\n\tdispose: function () {\n\n\t\tthis.dispatchEvent( { type: 'dispose' } );\n\n\t}\n\n} );\n\nclass BoxGeometry extends Geometry {\n\n\tconstructor( width, height, depth, widthSegments, heightSegments, depthSegments ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'BoxGeometry';\n\n\t\tthis.parameters = {\n\t\t\twidth: width,\n\t\t\theight: height,\n\t\t\tdepth: depth,\n\t\t\twidthSegments: widthSegments,\n\t\t\theightSegments: heightSegments,\n\t\t\tdepthSegments: depthSegments\n\t\t};\n\n\t\tthis.fromBufferGeometry( new BoxBufferGeometry( width, height, depth, widthSegments, heightSegments, depthSegments ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass CircleBufferGeometry extends BufferGeometry {\n\n\tconstructor( radius = 1, segments = 8, thetaStart = 0, thetaLength = Math.PI * 2 ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'CircleBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tsegments: segments,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t\tsegments = Math.max( 3, segments );\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\t// helper variables\n\n\t\tconst vertex = new Vector3();\n\t\tconst uv = new Vector2();\n\n\t\t// center point\n\n\t\tvertices.push( 0, 0, 0 );\n\t\tnormals.push( 0, 0, 1 );\n\t\tuvs.push( 0.5, 0.5 );\n\n\t\tfor ( let s = 0, i = 3; s <= segments; s ++, i += 3 ) {\n\n\t\t\tconst segment = thetaStart + s / segments * thetaLength;\n\n\t\t\t// vertex\n\n\t\t\tvertex.x = radius * Math.cos( segment );\n\t\t\tvertex.y = radius * Math.sin( segment );\n\n\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t// normal\n\n\t\t\tnormals.push( 0, 0, 1 );\n\n\t\t\t// uvs\n\n\t\t\tuv.x = ( vertices[ i ] / radius + 1 ) / 2;\n\t\t\tuv.y = ( vertices[ i + 1 ] / radius + 1 ) / 2;\n\n\t\t\tuvs.push( uv.x, uv.y );\n\n\t\t}\n\n\t\t// indices\n\n\t\tfor ( let i = 1; i <= segments; i ++ ) {\n\n\t\t\tindices.push( i, i + 1, 0 );\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t}\n\n}\n\nclass CircleGeometry extends Geometry {\n\n\tconstructor( radius, segments, thetaStart, thetaLength ) {\n\n\t\tsuper();\n\t\tthis.type = 'CircleGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tsegments: segments,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t\tthis.fromBufferGeometry( new CircleBufferGeometry( radius, segments, thetaStart, thetaLength ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass CylinderBufferGeometry extends BufferGeometry {\n\n\tconstructor( radiusTop = 1, radiusBottom = 1, height = 1, radialSegments = 8, heightSegments = 1, openEnded = false, thetaStart = 0, thetaLength = Math.PI * 2 ) {\n\n\t\tsuper();\n\t\tthis.type = 'CylinderBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradiusTop: radiusTop,\n\t\t\tradiusBottom: radiusBottom,\n\t\t\theight: height,\n\t\t\tradialSegments: radialSegments,\n\t\t\theightSegments: heightSegments,\n\t\t\topenEnded: openEnded,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t\tconst scope = this;\n\n\t\tradialSegments = Math.floor( radialSegments );\n\t\theightSegments = Math.floor( heightSegments );\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\t// helper variables\n\n\t\tlet index = 0;\n\t\tconst indexArray = [];\n\t\tconst halfHeight = height / 2;\n\t\tlet groupStart = 0;\n\n\t\t// generate geometry\n\n\t\tgenerateTorso();\n\n\t\tif ( openEnded === false ) {\n\n\t\t\tif ( radiusTop > 0 ) generateCap( true );\n\t\t\tif ( radiusBottom > 0 ) generateCap( false );\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t\tfunction generateTorso() {\n\n\t\t\tconst normal = new Vector3();\n\t\t\tconst vertex = new Vector3();\n\n\t\t\tlet groupCount = 0;\n\n\t\t\t// this will be used to calculate the normal\n\t\t\tconst slope = ( radiusBottom - radiusTop ) / height;\n\n\t\t\t// generate vertices, normals and uvs\n\n\t\t\tfor ( let y = 0; y <= heightSegments; y ++ ) {\n\n\t\t\t\tconst indexRow = [];\n\n\t\t\t\tconst v = y / heightSegments;\n\n\t\t\t\t// calculate the radius of the current row\n\n\t\t\t\tconst radius = v * ( radiusBottom - radiusTop ) + radiusTop;\n\n\t\t\t\tfor ( let x = 0; x <= radialSegments; x ++ ) {\n\n\t\t\t\t\tconst u = x / radialSegments;\n\n\t\t\t\t\tconst theta = u * thetaLength + thetaStart;\n\n\t\t\t\t\tconst sinTheta = Math.sin( theta );\n\t\t\t\t\tconst cosTheta = Math.cos( theta );\n\n\t\t\t\t\t// vertex\n\n\t\t\t\t\tvertex.x = radius * sinTheta;\n\t\t\t\t\tvertex.y = - v * height + halfHeight;\n\t\t\t\t\tvertex.z = radius * cosTheta;\n\t\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t\t// normal\n\n\t\t\t\t\tnormal.set( sinTheta, slope, cosTheta ).normalize();\n\t\t\t\t\tnormals.push( normal.x, normal.y, normal.z );\n\n\t\t\t\t\t// uv\n\n\t\t\t\t\tuvs.push( u, 1 - v );\n\n\t\t\t\t\t// save index of vertex in respective row\n\n\t\t\t\t\tindexRow.push( index ++ );\n\n\t\t\t\t}\n\n\t\t\t\t// now save vertices of the row in our index array\n\n\t\t\t\tindexArray.push( indexRow );\n\n\t\t\t}\n\n\t\t\t// generate indices\n\n\t\t\tfor ( let x = 0; x < radialSegments; x ++ ) {\n\n\t\t\t\tfor ( let y = 0; y < heightSegments; y ++ ) {\n\n\t\t\t\t\t// we use the index array to access the correct indices\n\n\t\t\t\t\tconst a = indexArray[ y ][ x ];\n\t\t\t\t\tconst b = indexArray[ y + 1 ][ x ];\n\t\t\t\t\tconst c = indexArray[ y + 1 ][ x + 1 ];\n\t\t\t\t\tconst d = indexArray[ y ][ x + 1 ];\n\n\t\t\t\t\t// faces\n\n\t\t\t\t\tindices.push( a, b, d );\n\t\t\t\t\tindices.push( b, c, d );\n\n\t\t\t\t\t// update group counter\n\n\t\t\t\t\tgroupCount += 6;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// add a group to the geometry. this will ensure multi material support\n\n\t\t\tscope.addGroup( groupStart, groupCount, 0 );\n\n\t\t\t// calculate new start value for groups\n\n\t\t\tgroupStart += groupCount;\n\n\t\t}\n\n\t\tfunction generateCap( top ) {\n\n\t\t\t// save the index of the first center vertex\n\t\t\tconst centerIndexStart = index;\n\n\t\t\tconst uv = new Vector2();\n\t\t\tconst vertex = new Vector3();\n\n\t\t\tlet groupCount = 0;\n\n\t\t\tconst radius = ( top === true ) ? radiusTop : radiusBottom;\n\t\t\tconst sign = ( top === true ) ? 1 : - 1;\n\n\t\t\t// first we generate the center vertex data of the cap.\n\t\t\t// because the geometry needs one set of uvs per face,\n\t\t\t// we must generate a center vertex per face/segment\n\n\t\t\tfor ( let x = 1; x <= radialSegments; x ++ ) {\n\n\t\t\t\t// vertex\n\n\t\t\t\tvertices.push( 0, halfHeight * sign, 0 );\n\n\t\t\t\t// normal\n\n\t\t\t\tnormals.push( 0, sign, 0 );\n\n\t\t\t\t// uv\n\n\t\t\t\tuvs.push( 0.5, 0.5 );\n\n\t\t\t\t// increase index\n\n\t\t\t\tindex ++;\n\n\t\t\t}\n\n\t\t\t// save the index of the last center vertex\n\t\t\tconst centerIndexEnd = index;\n\n\t\t\t// now we generate the surrounding vertices, normals and uvs\n\n\t\t\tfor ( let x = 0; x <= radialSegments; x ++ ) {\n\n\t\t\t\tconst u = x / radialSegments;\n\t\t\t\tconst theta = u * thetaLength + thetaStart;\n\n\t\t\t\tconst cosTheta = Math.cos( theta );\n\t\t\t\tconst sinTheta = Math.sin( theta );\n\n\t\t\t\t// vertex\n\n\t\t\t\tvertex.x = radius * sinTheta;\n\t\t\t\tvertex.y = halfHeight * sign;\n\t\t\t\tvertex.z = radius * cosTheta;\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t// normal\n\n\t\t\t\tnormals.push( 0, sign, 0 );\n\n\t\t\t\t// uv\n\n\t\t\t\tuv.x = ( cosTheta * 0.5 ) + 0.5;\n\t\t\t\tuv.y = ( sinTheta * 0.5 * sign ) + 0.5;\n\t\t\t\tuvs.push( uv.x, uv.y );\n\n\t\t\t\t// increase index\n\n\t\t\t\tindex ++;\n\n\t\t\t}\n\n\t\t\t// generate indices\n\n\t\t\tfor ( let x = 0; x < radialSegments; x ++ ) {\n\n\t\t\t\tconst c = centerIndexStart + x;\n\t\t\t\tconst i = centerIndexEnd + x;\n\n\t\t\t\tif ( top === true ) {\n\n\t\t\t\t\t// face top\n\n\t\t\t\t\tindices.push( i, i + 1, c );\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// face bottom\n\n\t\t\t\t\tindices.push( i + 1, i, c );\n\n\t\t\t\t}\n\n\t\t\t\tgroupCount += 3;\n\n\t\t\t}\n\n\t\t\t// add a group to the geometry. this will ensure multi material support\n\n\t\t\tscope.addGroup( groupStart, groupCount, top === true ? 1 : 2 );\n\n\t\t\t// calculate new start value for groups\n\n\t\t\tgroupStart += groupCount;\n\n\t\t}\n\n\t}\n\n}\n\nclass CylinderGeometry extends Geometry {\n\n\tconstructor( radiusTop, radiusBottom, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) {\n\n\t\tsuper();\n\t\tthis.type = 'CylinderGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradiusTop: radiusTop,\n\t\t\tradiusBottom: radiusBottom,\n\t\t\theight: height,\n\t\t\tradialSegments: radialSegments,\n\t\t\theightSegments: heightSegments,\n\t\t\topenEnded: openEnded,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t\tthis.fromBufferGeometry( new CylinderBufferGeometry( radiusTop, radiusBottom, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass ConeGeometry extends CylinderGeometry {\n\n\tconstructor( radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) {\n\n\t\tsuper( 0, radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength );\n\t\tthis.type = 'ConeGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\theight: height,\n\t\t\tradialSegments: radialSegments,\n\t\t\theightSegments: heightSegments,\n\t\t\topenEnded: openEnded,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t}\n\n}\n\nclass ConeBufferGeometry extends CylinderBufferGeometry {\n\n\tconstructor( radius = 1, height = 1, radialSegments = 8, heightSegments = 1, openEnded = false, thetaStart = 0, thetaLength = Math.PI * 2 ) {\n\n\t\tsuper( 0, radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength );\n\n\t\tthis.type = 'ConeBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\theight: height,\n\t\t\tradialSegments: radialSegments,\n\t\t\theightSegments: heightSegments,\n\t\t\topenEnded: openEnded,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t}\n\n}\n\nclass PolyhedronBufferGeometry extends BufferGeometry {\n\n\tconstructor( vertices, indices, radius = 1, detail = 0 ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'PolyhedronBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tvertices: vertices,\n\t\t\tindices: indices,\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t\t// default buffer data\n\n\t\tconst vertexBuffer = [];\n\t\tconst uvBuffer = [];\n\n\t\t// the subdivision creates the vertex buffer data\n\n\t\tsubdivide( detail );\n\n\t\t// all vertices should lie on a conceptual sphere with a given radius\n\n\t\tapplyRadius( radius );\n\n\t\t// finally, create the uv data\n\n\t\tgenerateUVs();\n\n\t\t// build non-indexed geometry\n\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertexBuffer, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( vertexBuffer.slice(), 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvBuffer, 2 ) );\n\n\t\tif ( detail === 0 ) {\n\n\t\t\tthis.computeVertexNormals(); // flat normals\n\n\t\t} else {\n\n\t\t\tthis.normalizeNormals(); // smooth normals\n\n\t\t}\n\n\t\t// helper functions\n\n\t\tfunction subdivide( detail ) {\n\n\t\t\tconst a = new Vector3();\n\t\t\tconst b = new Vector3();\n\t\t\tconst c = new Vector3();\n\n\t\t\t// iterate over all faces and apply a subdivison with the given detail value\n\n\t\t\tfor ( let i = 0; i < indices.length; i += 3 ) {\n\n\t\t\t\t// get the vertices of the face\n\n\t\t\t\tgetVertexByIndex( indices[ i + 0 ], a );\n\t\t\t\tgetVertexByIndex( indices[ i + 1 ], b );\n\t\t\t\tgetVertexByIndex( indices[ i + 2 ], c );\n\n\t\t\t\t// perform subdivision\n\n\t\t\t\tsubdivideFace( a, b, c, detail );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction subdivideFace( a, b, c, detail ) {\n\n\t\t\tconst cols = detail + 1;\n\n\t\t\t// we use this multidimensional array as a data structure for creating the subdivision\n\n\t\t\tconst v = [];\n\n\t\t\t// construct all of the vertices for this subdivision\n\n\t\t\tfor ( let i = 0; i <= cols; i ++ ) {\n\n\t\t\t\tv[ i ] = [];\n\n\t\t\t\tconst aj = a.clone().lerp( c, i / cols );\n\t\t\t\tconst bj = b.clone().lerp( c, i / cols );\n\n\t\t\t\tconst rows = cols - i;\n\n\t\t\t\tfor ( let j = 0; j <= rows; j ++ ) {\n\n\t\t\t\t\tif ( j === 0 && i === cols ) {\n\n\t\t\t\t\t\tv[ i ][ j ] = aj;\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tv[ i ][ j ] = aj.clone().lerp( bj, j / rows );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// construct all of the faces\n\n\t\t\tfor ( let i = 0; i < cols; i ++ ) {\n\n\t\t\t\tfor ( let j = 0; j < 2 * ( cols - i ) - 1; j ++ ) {\n\n\t\t\t\t\tconst k = Math.floor( j / 2 );\n\n\t\t\t\t\tif ( j % 2 === 0 ) {\n\n\t\t\t\t\t\tpushVertex( v[ i ][ k + 1 ] );\n\t\t\t\t\t\tpushVertex( v[ i + 1 ][ k ] );\n\t\t\t\t\t\tpushVertex( v[ i ][ k ] );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tpushVertex( v[ i ][ k + 1 ] );\n\t\t\t\t\t\tpushVertex( v[ i + 1 ][ k + 1 ] );\n\t\t\t\t\t\tpushVertex( v[ i + 1 ][ k ] );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction applyRadius( radius ) {\n\n\t\t\tconst vertex = new Vector3();\n\n\t\t\t// iterate over the entire buffer and apply the radius to each vertex\n\n\t\t\tfor ( let i = 0; i < vertexBuffer.length; i += 3 ) {\n\n\t\t\t\tvertex.x = vertexBuffer[ i + 0 ];\n\t\t\t\tvertex.y = vertexBuffer[ i + 1 ];\n\t\t\t\tvertex.z = vertexBuffer[ i + 2 ];\n\n\t\t\t\tvertex.normalize().multiplyScalar( radius );\n\n\t\t\t\tvertexBuffer[ i + 0 ] = vertex.x;\n\t\t\t\tvertexBuffer[ i + 1 ] = vertex.y;\n\t\t\t\tvertexBuffer[ i + 2 ] = vertex.z;\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction generateUVs() {\n\n\t\t\tconst vertex = new Vector3();\n\n\t\t\tfor ( let i = 0; i < vertexBuffer.length; i += 3 ) {\n\n\t\t\t\tvertex.x = vertexBuffer[ i + 0 ];\n\t\t\t\tvertex.y = vertexBuffer[ i + 1 ];\n\t\t\t\tvertex.z = vertexBuffer[ i + 2 ];\n\n\t\t\t\tconst u = azimuth( vertex ) / 2 / Math.PI + 0.5;\n\t\t\t\tconst v = inclination( vertex ) / Math.PI + 0.5;\n\t\t\t\tuvBuffer.push( u, 1 - v );\n\n\t\t\t}\n\n\t\t\tcorrectUVs();\n\n\t\t\tcorrectSeam();\n\n\t\t}\n\n\t\tfunction correctSeam() {\n\n\t\t\t// handle case when face straddles the seam, see #3269\n\n\t\t\tfor ( let i = 0; i < uvBuffer.length; i += 6 ) {\n\n\t\t\t\t// uv data of a single face\n\n\t\t\t\tconst x0 = uvBuffer[ i + 0 ];\n\t\t\t\tconst x1 = uvBuffer[ i + 2 ];\n\t\t\t\tconst x2 = uvBuffer[ i + 4 ];\n\n\t\t\t\tconst max = Math.max( x0, x1, x2 );\n\t\t\t\tconst min = Math.min( x0, x1, x2 );\n\n\t\t\t\t// 0.9 is somewhat arbitrary\n\n\t\t\t\tif ( max > 0.9 && min < 0.1 ) {\n\n\t\t\t\t\tif ( x0 < 0.2 ) uvBuffer[ i + 0 ] += 1;\n\t\t\t\t\tif ( x1 < 0.2 ) uvBuffer[ i + 2 ] += 1;\n\t\t\t\t\tif ( x2 < 0.2 ) uvBuffer[ i + 4 ] += 1;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction pushVertex( vertex ) {\n\n\t\t\tvertexBuffer.push( vertex.x, vertex.y, vertex.z );\n\n\t\t}\n\n\t\tfunction getVertexByIndex( index, vertex ) {\n\n\t\t\tconst stride = index * 3;\n\n\t\t\tvertex.x = vertices[ stride + 0 ];\n\t\t\tvertex.y = vertices[ stride + 1 ];\n\t\t\tvertex.z = vertices[ stride + 2 ];\n\n\t\t}\n\n\t\tfunction correctUVs() {\n\n\t\t\tconst a = new Vector3();\n\t\t\tconst b = new Vector3();\n\t\t\tconst c = new Vector3();\n\n\t\t\tconst centroid = new Vector3();\n\n\t\t\tconst uvA = new Vector2();\n\t\t\tconst uvB = new Vector2();\n\t\t\tconst uvC = new Vector2();\n\n\t\t\tfor ( let i = 0, j = 0; i < vertexBuffer.length; i += 9, j += 6 ) {\n\n\t\t\t\ta.set( vertexBuffer[ i + 0 ], vertexBuffer[ i + 1 ], vertexBuffer[ i + 2 ] );\n\t\t\t\tb.set( vertexBuffer[ i + 3 ], vertexBuffer[ i + 4 ], vertexBuffer[ i + 5 ] );\n\t\t\t\tc.set( vertexBuffer[ i + 6 ], vertexBuffer[ i + 7 ], vertexBuffer[ i + 8 ] );\n\n\t\t\t\tuvA.set( uvBuffer[ j + 0 ], uvBuffer[ j + 1 ] );\n\t\t\t\tuvB.set( uvBuffer[ j + 2 ], uvBuffer[ j + 3 ] );\n\t\t\t\tuvC.set( uvBuffer[ j + 4 ], uvBuffer[ j + 5 ] );\n\n\t\t\t\tcentroid.copy( a ).add( b ).add( c ).divideScalar( 3 );\n\n\t\t\t\tconst azi = azimuth( centroid );\n\n\t\t\t\tcorrectUV( uvA, j + 0, a, azi );\n\t\t\t\tcorrectUV( uvB, j + 2, b, azi );\n\t\t\t\tcorrectUV( uvC, j + 4, c, azi );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction correctUV( uv, stride, vector, azimuth ) {\n\n\t\t\tif ( ( azimuth < 0 ) && ( uv.x === 1 ) ) {\n\n\t\t\t\tuvBuffer[ stride ] = uv.x - 1;\n\n\t\t\t}\n\n\t\t\tif ( ( vector.x === 0 ) && ( vector.z === 0 ) ) {\n\n\t\t\t\tuvBuffer[ stride ] = azimuth / 2 / Math.PI + 0.5;\n\n\t\t\t}\n\n\t\t}\n\n\t\t// Angle around the Y axis, counter-clockwise when looking from above.\n\n\t\tfunction azimuth( vector ) {\n\n\t\t\treturn Math.atan2( vector.z, - vector.x );\n\n\t\t}\n\n\n\t\t// Angle above the XZ plane.\n\n\t\tfunction inclination( vector ) {\n\n\t\t\treturn Math.atan2( - vector.y, Math.sqrt( ( vector.x * vector.x ) + ( vector.z * vector.z ) ) );\n\n\t\t}\n\n\t}\n\n}\n\nclass DodecahedronBufferGeometry extends PolyhedronBufferGeometry {\n\n\tconstructor( radius = 1, detail = 0 ) {\n\n\t\tconst t = ( 1 + Math.sqrt( 5 ) ) / 2;\n\t\tconst r = 1 / t;\n\n\t\tconst vertices = [\n\n\t\t\t// (±1, ±1, ±1)\n\t\t\t- 1, - 1, - 1,\t- 1, - 1, 1,\n\t\t\t- 1, 1, - 1, - 1, 1, 1,\n\t\t\t1, - 1, - 1, 1, - 1, 1,\n\t\t\t1, 1, - 1, 1, 1, 1,\n\n\t\t\t// (0, ±1/φ, ±φ)\n\t\t\t0, - r, - t, 0, - r, t,\n\t\t\t0, r, - t, 0, r, t,\n\n\t\t\t// (±1/φ, ±φ, 0)\n\t\t\t- r, - t, 0, - r, t, 0,\n\t\t\tr, - t, 0, r, t, 0,\n\n\t\t\t// (±φ, 0, ±1/φ)\n\t\t\t- t, 0, - r, t, 0, - r,\n\t\t\t- t, 0, r, t, 0, r\n\t\t];\n\n\t\tconst indices = [\n\t\t\t3, 11, 7, \t3, 7, 15, \t3, 15, 13,\n\t\t\t7, 19, 17, \t7, 17, 6, \t7, 6, 15,\n\t\t\t17, 4, 8, \t17, 8, 10, \t17, 10, 6,\n\t\t\t8, 0, 16, \t8, 16, 2, \t8, 2, 10,\n\t\t\t0, 12, 1, \t0, 1, 18, \t0, 18, 16,\n\t\t\t6, 10, 2, \t6, 2, 13, \t6, 13, 15,\n\t\t\t2, 16, 18, \t2, 18, 3, \t2, 3, 13,\n\t\t\t18, 1, 9, \t18, 9, 11, \t18, 11, 3,\n\t\t\t4, 14, 12, \t4, 12, 0, \t4, 0, 8,\n\t\t\t11, 9, 5, \t11, 5, 19, \t11, 19, 7,\n\t\t\t19, 5, 14, \t19, 14, 4, \t19, 4, 17,\n\t\t\t1, 12, 14, \t1, 14, 5, \t1, 5, 9\n\t\t];\n\n\t\tsuper( vertices, indices, radius, detail );\n\n\t\tthis.type = 'DodecahedronBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t}\n\n}\n\nclass DodecahedronGeometry extends Geometry {\n\n\tconstructor( radius, detail ) {\n\n\t\tsuper();\n\t\tthis.type = 'DodecahedronGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t\tthis.fromBufferGeometry( new DodecahedronBufferGeometry( radius, detail ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nconst _v0$2 = new Vector3();\nconst _v1$5 = new Vector3();\nconst _normal$1 = new Vector3();\nconst _triangle = new Triangle();\n\nclass EdgesGeometry extends BufferGeometry {\n\n\tconstructor( geometry, thresholdAngle ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'EdgesGeometry';\n\n\t\tthis.parameters = {\n\t\t\tthresholdAngle: thresholdAngle\n\t\t};\n\n\t\tthresholdAngle = ( thresholdAngle !== undefined ) ? thresholdAngle : 1;\n\n\t\tif ( geometry.isGeometry ) {\n\n\t\t\tgeometry = new BufferGeometry().fromGeometry( geometry );\n\n\t\t}\n\n\t\tconst precisionPoints = 4;\n\t\tconst precision = Math.pow( 10, precisionPoints );\n\t\tconst thresholdDot = Math.cos( MathUtils.DEG2RAD * thresholdAngle );\n\n\t\tconst indexAttr = geometry.getIndex();\n\t\tconst positionAttr = geometry.getAttribute( 'position' );\n\t\tconst indexCount = indexAttr ? indexAttr.count : positionAttr.count;\n\n\t\tconst indexArr = [ 0, 0, 0 ];\n\t\tconst vertKeys = [ 'a', 'b', 'c' ];\n\t\tconst hashes = new Array( 3 );\n\n\t\tconst edgeData = {};\n\t\tconst vertices = [];\n\t\tfor ( let i = 0; i < indexCount; i += 3 ) {\n\n\t\t\tif ( indexAttr ) {\n\n\t\t\t\tindexArr[ 0 ] = indexAttr.getX( i );\n\t\t\t\tindexArr[ 1 ] = indexAttr.getX( i + 1 );\n\t\t\t\tindexArr[ 2 ] = indexAttr.getX( i + 2 );\n\n\t\t\t} else {\n\n\t\t\t\tindexArr[ 0 ] = i;\n\t\t\t\tindexArr[ 1 ] = i + 1;\n\t\t\t\tindexArr[ 2 ] = i + 2;\n\n\t\t\t}\n\n\t\t\tconst { a, b, c } = _triangle;\n\t\t\ta.fromBufferAttribute( positionAttr, indexArr[ 0 ] );\n\t\t\tb.fromBufferAttribute( positionAttr, indexArr[ 1 ] );\n\t\t\tc.fromBufferAttribute( positionAttr, indexArr[ 2 ] );\n\t\t\t_triangle.getNormal( _normal$1 );\n\n\t\t\t// create hashes for the edge from the vertices\n\t\t\thashes[ 0 ] = `${ Math.round( a.x * precision ) },${ Math.round( a.y * precision ) },${ Math.round( a.z * precision ) }`;\n\t\t\thashes[ 1 ] = `${ Math.round( b.x * precision ) },${ Math.round( b.y * precision ) },${ Math.round( b.z * precision ) }`;\n\t\t\thashes[ 2 ] = `${ Math.round( c.x * precision ) },${ Math.round( c.y * precision ) },${ Math.round( c.z * precision ) }`;\n\n\t\t\t// skip degenerate triangles\n\t\t\tif ( hashes[ 0 ] === hashes[ 1 ] || hashes[ 1 ] === hashes[ 2 ] || hashes[ 2 ] === hashes[ 0 ] ) {\n\n\t\t\t\tcontinue;\n\n\t\t\t}\n\n\t\t\t// iterate over every edge\n\t\t\tfor ( let j = 0; j < 3; j ++ ) {\n\n\t\t\t\t// get the first and next vertex making up the edge\n\t\t\t\tconst jNext = ( j + 1 ) % 3;\n\t\t\t\tconst vecHash0 = hashes[ j ];\n\t\t\t\tconst vecHash1 = hashes[ jNext ];\n\t\t\t\tconst v0 = _triangle[ vertKeys[ j ] ];\n\t\t\t\tconst v1 = _triangle[ vertKeys[ jNext ] ];\n\n\t\t\t\tconst hash = `${ vecHash0 }_${ vecHash1 }`;\n\t\t\t\tconst reverseHash = `${ vecHash1 }_${ vecHash0 }`;\n\n\t\t\t\tif ( reverseHash in edgeData && edgeData[ reverseHash ] ) {\n\n\t\t\t\t\t// if we found a sibling edge add it into the vertex array if\n\t\t\t\t\t// it meets the angle threshold and delete the edge from the map.\n\t\t\t\t\tif ( _normal$1.dot( edgeData[ reverseHash ].normal ) <= thresholdDot ) {\n\n\t\t\t\t\t\tvertices.push( v0.x, v0.y, v0.z );\n\t\t\t\t\t\tvertices.push( v1.x, v1.y, v1.z );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tedgeData[ reverseHash ] = null;\n\n\t\t\t\t} else if ( ! ( hash in edgeData ) ) {\n\n\t\t\t\t\t// if we've already got an edge here then skip adding a new one\n\t\t\t\t\tedgeData[ hash ] = {\n\n\t\t\t\t\t\tindex0: indexArr[ j ],\n\t\t\t\t\t\tindex1: indexArr[ jNext ],\n\t\t\t\t\t\tnormal: _normal$1.clone(),\n\n\t\t\t\t\t};\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\t// iterate over all remaining, unmatched edges and add them to the vertex array\n\t\tfor ( const key in edgeData ) {\n\n\t\t\tif ( edgeData[ key ] ) {\n\n\t\t\t\tconst { index0, index1 } = edgeData[ key ];\n\t\t\t\t_v0$2.fromBufferAttribute( positionAttr, index0 );\n\t\t\t\t_v1$5.fromBufferAttribute( positionAttr, index1 );\n\n\t\t\t\tvertices.push( _v0$2.x, _v0$2.y, _v0$2.z );\n\t\t\t\tvertices.push( _v1$5.x, _v1$5.y, _v1$5.z );\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\n\t}\n\n}\n\n/**\n * Port from https://github.com/mapbox/earcut (v2.2.2)\n */\n\nconst Earcut = {\n\n\ttriangulate: function ( data, holeIndices, dim ) {\n\n\t\tdim = dim || 2;\n\n\t\tconst hasHoles = holeIndices && holeIndices.length;\n\t\tconst outerLen = hasHoles ? holeIndices[ 0 ] * dim : data.length;\n\t\tlet outerNode = linkedList( data, 0, outerLen, dim, true );\n\t\tconst triangles = [];\n\n\t\tif ( ! outerNode || outerNode.next === outerNode.prev ) return triangles;\n\n\t\tlet minX, minY, maxX, maxY, x, y, invSize;\n\n\t\tif ( hasHoles ) outerNode = eliminateHoles( data, holeIndices, outerNode, dim );\n\n\t\t// if the shape is not too simple, we'll use z-order curve hash later; calculate polygon bbox\n\t\tif ( data.length > 80 * dim ) {\n\n\t\t\tminX = maxX = data[ 0 ];\n\t\t\tminY = maxY = data[ 1 ];\n\n\t\t\tfor ( let i = dim; i < outerLen; i += dim ) {\n\n\t\t\t\tx = data[ i ];\n\t\t\t\ty = data[ i + 1 ];\n\t\t\t\tif ( x < minX ) minX = x;\n\t\t\t\tif ( y < minY ) minY = y;\n\t\t\t\tif ( x > maxX ) maxX = x;\n\t\t\t\tif ( y > maxY ) maxY = y;\n\n\t\t\t}\n\n\t\t\t// minX, minY and invSize are later used to transform coords into integers for z-order calculation\n\t\t\tinvSize = Math.max( maxX - minX, maxY - minY );\n\t\t\tinvSize = invSize !== 0 ? 1 / invSize : 0;\n\n\t\t}\n\n\t\tearcutLinked( outerNode, triangles, dim, minX, minY, invSize );\n\n\t\treturn triangles;\n\n\t}\n\n};\n\n// create a circular doubly linked list from polygon points in the specified winding order\nfunction linkedList( data, start, end, dim, clockwise ) {\n\n\tlet i, last;\n\n\tif ( clockwise === ( signedArea( data, start, end, dim ) > 0 ) ) {\n\n\t\tfor ( i = start; i < end; i += dim ) last = insertNode( i, data[ i ], data[ i + 1 ], last );\n\n\t} else {\n\n\t\tfor ( i = end - dim; i >= start; i -= dim ) last = insertNode( i, data[ i ], data[ i + 1 ], last );\n\n\t}\n\n\tif ( last && equals( last, last.next ) ) {\n\n\t\tremoveNode( last );\n\t\tlast = last.next;\n\n\t}\n\n\treturn last;\n\n}\n\n// eliminate colinear or duplicate points\nfunction filterPoints( start, end ) {\n\n\tif ( ! start ) return start;\n\tif ( ! end ) end = start;\n\n\tlet p = start,\n\t\tagain;\n\tdo {\n\n\t\tagain = false;\n\n\t\tif ( ! p.steiner && ( equals( p, p.next ) || area( p.prev, p, p.next ) === 0 ) ) {\n\n\t\t\tremoveNode( p );\n\t\t\tp = end = p.prev;\n\t\t\tif ( p === p.next ) break;\n\t\t\tagain = true;\n\n\t\t} else {\n\n\t\t\tp = p.next;\n\n\t\t}\n\n\t} while ( again || p !== end );\n\n\treturn end;\n\n}\n\n// main ear slicing loop which triangulates a polygon (given as a linked list)\nfunction earcutLinked( ear, triangles, dim, minX, minY, invSize, pass ) {\n\n\tif ( ! ear ) return;\n\n\t// interlink polygon nodes in z-order\n\tif ( ! pass && invSize ) indexCurve( ear, minX, minY, invSize );\n\n\tlet stop = ear,\n\t\tprev, next;\n\n\t// iterate through ears, slicing them one by one\n\twhile ( ear.prev !== ear.next ) {\n\n\t\tprev = ear.prev;\n\t\tnext = ear.next;\n\n\t\tif ( invSize ? isEarHashed( ear, minX, minY, invSize ) : isEar( ear ) ) {\n\n\t\t\t// cut off the triangle\n\t\t\ttriangles.push( prev.i / dim );\n\t\t\ttriangles.push( ear.i / dim );\n\t\t\ttriangles.push( next.i / dim );\n\n\t\t\tremoveNode( ear );\n\n\t\t\t// skipping the next vertex leads to less sliver triangles\n\t\t\tear = next.next;\n\t\t\tstop = next.next;\n\n\t\t\tcontinue;\n\n\t\t}\n\n\t\tear = next;\n\n\t\t// if we looped through the whole remaining polygon and can't find any more ears\n\t\tif ( ear === stop ) {\n\n\t\t\t// try filtering points and slicing again\n\t\t\tif ( ! pass ) {\n\n\t\t\t\tearcutLinked( filterPoints( ear ), triangles, dim, minX, minY, invSize, 1 );\n\n\t\t\t\t// if this didn't work, try curing all small self-intersections locally\n\n\t\t\t} else if ( pass === 1 ) {\n\n\t\t\t\tear = cureLocalIntersections( filterPoints( ear ), triangles, dim );\n\t\t\t\tearcutLinked( ear, triangles, dim, minX, minY, invSize, 2 );\n\n\t\t\t\t// as a last resort, try splitting the remaining polygon into two\n\n\t\t\t} else if ( pass === 2 ) {\n\n\t\t\t\tsplitEarcut( ear, triangles, dim, minX, minY, invSize );\n\n\t\t\t}\n\n\t\t\tbreak;\n\n\t\t}\n\n\t}\n\n}\n\n// check whether a polygon node forms a valid ear with adjacent nodes\nfunction isEar( ear ) {\n\n\tconst a = ear.prev,\n\t\tb = ear,\n\t\tc = ear.next;\n\n\tif ( area( a, b, c ) >= 0 ) return false; // reflex, can't be an ear\n\n\t// now make sure we don't have other points inside the potential ear\n\tlet p = ear.next.next;\n\n\twhile ( p !== ear.prev ) {\n\n\t\tif ( pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y ) &&\n\t\t\tarea( p.prev, p, p.next ) >= 0 ) return false;\n\t\tp = p.next;\n\n\t}\n\n\treturn true;\n\n}\n\nfunction isEarHashed( ear, minX, minY, invSize ) {\n\n\tconst a = ear.prev,\n\t\tb = ear,\n\t\tc = ear.next;\n\n\tif ( area( a, b, c ) >= 0 ) return false; // reflex, can't be an ear\n\n\t// triangle bbox; min & max are calculated like this for speed\n\tconst minTX = a.x < b.x ? ( a.x < c.x ? a.x : c.x ) : ( b.x < c.x ? b.x : c.x ),\n\t\tminTY = a.y < b.y ? ( a.y < c.y ? a.y : c.y ) : ( b.y < c.y ? b.y : c.y ),\n\t\tmaxTX = a.x > b.x ? ( a.x > c.x ? a.x : c.x ) : ( b.x > c.x ? b.x : c.x ),\n\t\tmaxTY = a.y > b.y ? ( a.y > c.y ? a.y : c.y ) : ( b.y > c.y ? b.y : c.y );\n\n\t// z-order range for the current triangle bbox;\n\tconst minZ = zOrder( minTX, minTY, minX, minY, invSize ),\n\t\tmaxZ = zOrder( maxTX, maxTY, minX, minY, invSize );\n\n\tlet p = ear.prevZ,\n\t\tn = ear.nextZ;\n\n\t// look for points inside the triangle in both directions\n\twhile ( p && p.z >= minZ && n && n.z <= maxZ ) {\n\n\t\tif ( p !== ear.prev && p !== ear.next &&\n\t\t\tpointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y ) &&\n\t\t\tarea( p.prev, p, p.next ) >= 0 ) return false;\n\t\tp = p.prevZ;\n\n\t\tif ( n !== ear.prev && n !== ear.next &&\n\t\t\tpointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, n.x, n.y ) &&\n\t\t\tarea( n.prev, n, n.next ) >= 0 ) return false;\n\t\tn = n.nextZ;\n\n\t}\n\n\t// look for remaining points in decreasing z-order\n\twhile ( p && p.z >= minZ ) {\n\n\t\tif ( p !== ear.prev && p !== ear.next &&\n\t\t\tpointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y ) &&\n\t\t\tarea( p.prev, p, p.next ) >= 0 ) return false;\n\t\tp = p.prevZ;\n\n\t}\n\n\t// look for remaining points in increasing z-order\n\twhile ( n && n.z <= maxZ ) {\n\n\t\tif ( n !== ear.prev && n !== ear.next &&\n\t\t\tpointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, n.x, n.y ) &&\n\t\t\tarea( n.prev, n, n.next ) >= 0 ) return false;\n\t\tn = n.nextZ;\n\n\t}\n\n\treturn true;\n\n}\n\n// go through all polygon nodes and cure small local self-intersections\nfunction cureLocalIntersections( start, triangles, dim ) {\n\n\tlet p = start;\n\tdo {\n\n\t\tconst a = p.prev,\n\t\t\tb = p.next.next;\n\n\t\tif ( ! equals( a, b ) && intersects( a, p, p.next, b ) && locallyInside( a, b ) && locallyInside( b, a ) ) {\n\n\t\t\ttriangles.push( a.i / dim );\n\t\t\ttriangles.push( p.i / dim );\n\t\t\ttriangles.push( b.i / dim );\n\n\t\t\t// remove two nodes involved\n\t\t\tremoveNode( p );\n\t\t\tremoveNode( p.next );\n\n\t\t\tp = start = b;\n\n\t\t}\n\n\t\tp = p.next;\n\n\t} while ( p !== start );\n\n\treturn filterPoints( p );\n\n}\n\n// try splitting polygon into two and triangulate them independently\nfunction splitEarcut( start, triangles, dim, minX, minY, invSize ) {\n\n\t// look for a valid diagonal that divides the polygon into two\n\tlet a = start;\n\tdo {\n\n\t\tlet b = a.next.next;\n\t\twhile ( b !== a.prev ) {\n\n\t\t\tif ( a.i !== b.i && isValidDiagonal( a, b ) ) {\n\n\t\t\t\t// split the polygon in two by the diagonal\n\t\t\t\tlet c = splitPolygon( a, b );\n\n\t\t\t\t// filter colinear points around the cuts\n\t\t\t\ta = filterPoints( a, a.next );\n\t\t\t\tc = filterPoints( c, c.next );\n\n\t\t\t\t// run earcut on each half\n\t\t\t\tearcutLinked( a, triangles, dim, minX, minY, invSize );\n\t\t\t\tearcutLinked( c, triangles, dim, minX, minY, invSize );\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t\tb = b.next;\n\n\t\t}\n\n\t\ta = a.next;\n\n\t} while ( a !== start );\n\n}\n\n// link every hole into the outer loop, producing a single-ring polygon without holes\nfunction eliminateHoles( data, holeIndices, outerNode, dim ) {\n\n\tconst queue = [];\n\tlet i, len, start, end, list;\n\n\tfor ( i = 0, len = holeIndices.length; i < len; i ++ ) {\n\n\t\tstart = holeIndices[ i ] * dim;\n\t\tend = i < len - 1 ? holeIndices[ i + 1 ] * dim : data.length;\n\t\tlist = linkedList( data, start, end, dim, false );\n\t\tif ( list === list.next ) list.steiner = true;\n\t\tqueue.push( getLeftmost( list ) );\n\n\t}\n\n\tqueue.sort( compareX );\n\n\t// process holes from left to right\n\tfor ( i = 0; i < queue.length; i ++ ) {\n\n\t\teliminateHole( queue[ i ], outerNode );\n\t\touterNode = filterPoints( outerNode, outerNode.next );\n\n\t}\n\n\treturn outerNode;\n\n}\n\nfunction compareX( a, b ) {\n\n\treturn a.x - b.x;\n\n}\n\n// find a bridge between vertices that connects hole with an outer ring and and link it\nfunction eliminateHole( hole, outerNode ) {\n\n\touterNode = findHoleBridge( hole, outerNode );\n\tif ( outerNode ) {\n\n\t\tconst b = splitPolygon( outerNode, hole );\n\n\t\t// filter collinear points around the cuts\n\t\tfilterPoints( outerNode, outerNode.next );\n\t\tfilterPoints( b, b.next );\n\n\t}\n\n}\n\n// David Eberly's algorithm for finding a bridge between hole and outer polygon\nfunction findHoleBridge( hole, outerNode ) {\n\n\tlet p = outerNode;\n\tconst hx = hole.x;\n\tconst hy = hole.y;\n\tlet qx = - Infinity, m;\n\n\t// find a segment intersected by a ray from the hole's leftmost point to the left;\n\t// segment's endpoint with lesser x will be potential connection point\n\tdo {\n\n\t\tif ( hy <= p.y && hy >= p.next.y && p.next.y !== p.y ) {\n\n\t\t\tconst x = p.x + ( hy - p.y ) * ( p.next.x - p.x ) / ( p.next.y - p.y );\n\t\t\tif ( x <= hx && x > qx ) {\n\n\t\t\t\tqx = x;\n\t\t\t\tif ( x === hx ) {\n\n\t\t\t\t\tif ( hy === p.y ) return p;\n\t\t\t\t\tif ( hy === p.next.y ) return p.next;\n\n\t\t\t\t}\n\n\t\t\t\tm = p.x < p.next.x ? p : p.next;\n\n\t\t\t}\n\n\t\t}\n\n\t\tp = p.next;\n\n\t} while ( p !== outerNode );\n\n\tif ( ! m ) return null;\n\n\tif ( hx === qx ) return m; // hole touches outer segment; pick leftmost endpoint\n\n\t// look for points inside the triangle of hole point, segment intersection and endpoint;\n\t// if there are no points found, we have a valid connection;\n\t// otherwise choose the point of the minimum angle with the ray as connection point\n\n\tconst stop = m,\n\t\tmx = m.x,\n\t\tmy = m.y;\n\tlet tanMin = Infinity, tan;\n\n\tp = m;\n\n\tdo {\n\n\t\tif ( hx >= p.x && p.x >= mx && hx !== p.x &&\n\t\t\t\tpointInTriangle( hy < my ? hx : qx, hy, mx, my, hy < my ? qx : hx, hy, p.x, p.y ) ) {\n\n\t\t\ttan = Math.abs( hy - p.y ) / ( hx - p.x ); // tangential\n\n\t\t\tif ( locallyInside( p, hole ) && ( tan < tanMin || ( tan === tanMin && ( p.x > m.x || ( p.x === m.x && sectorContainsSector( m, p ) ) ) ) ) ) {\n\n\t\t\t\tm = p;\n\t\t\t\ttanMin = tan;\n\n\t\t\t}\n\n\t\t}\n\n\t\tp = p.next;\n\n\t} while ( p !== stop );\n\n\treturn m;\n\n}\n\n// whether sector in vertex m contains sector in vertex p in the same coordinates\nfunction sectorContainsSector( m, p ) {\n\n\treturn area( m.prev, m, p.prev ) < 0 && area( p.next, m, m.next ) < 0;\n\n}\n\n// interlink polygon nodes in z-order\nfunction indexCurve( start, minX, minY, invSize ) {\n\n\tlet p = start;\n\tdo {\n\n\t\tif ( p.z === null ) p.z = zOrder( p.x, p.y, minX, minY, invSize );\n\t\tp.prevZ = p.prev;\n\t\tp.nextZ = p.next;\n\t\tp = p.next;\n\n\t} while ( p !== start );\n\n\tp.prevZ.nextZ = null;\n\tp.prevZ = null;\n\n\tsortLinked( p );\n\n}\n\n// Simon Tatham's linked list merge sort algorithm\n// http://www.chiark.greenend.org.uk/~sgtatham/algorithms/listsort.html\nfunction sortLinked( list ) {\n\n\tlet i, p, q, e, tail, numMerges, pSize, qSize,\n\t\tinSize = 1;\n\n\tdo {\n\n\t\tp = list;\n\t\tlist = null;\n\t\ttail = null;\n\t\tnumMerges = 0;\n\n\t\twhile ( p ) {\n\n\t\t\tnumMerges ++;\n\t\t\tq = p;\n\t\t\tpSize = 0;\n\t\t\tfor ( i = 0; i < inSize; i ++ ) {\n\n\t\t\t\tpSize ++;\n\t\t\t\tq = q.nextZ;\n\t\t\t\tif ( ! q ) break;\n\n\t\t\t}\n\n\t\t\tqSize = inSize;\n\n\t\t\twhile ( pSize > 0 || ( qSize > 0 && q ) ) {\n\n\t\t\t\tif ( pSize !== 0 && ( qSize === 0 || ! q || p.z <= q.z ) ) {\n\n\t\t\t\t\te = p;\n\t\t\t\t\tp = p.nextZ;\n\t\t\t\t\tpSize --;\n\n\t\t\t\t} else {\n\n\t\t\t\t\te = q;\n\t\t\t\t\tq = q.nextZ;\n\t\t\t\t\tqSize --;\n\n\t\t\t\t}\n\n\t\t\t\tif ( tail ) tail.nextZ = e;\n\t\t\t\telse list = e;\n\n\t\t\t\te.prevZ = tail;\n\t\t\t\ttail = e;\n\n\t\t\t}\n\n\t\t\tp = q;\n\n\t\t}\n\n\t\ttail.nextZ = null;\n\t\tinSize *= 2;\n\n\t} while ( numMerges > 1 );\n\n\treturn list;\n\n}\n\n// z-order of a point given coords and inverse of the longer side of data bbox\nfunction zOrder( x, y, minX, minY, invSize ) {\n\n\t// coords are transformed into non-negative 15-bit integer range\n\tx = 32767 * ( x - minX ) * invSize;\n\ty = 32767 * ( y - minY ) * invSize;\n\n\tx = ( x | ( x << 8 ) ) & 0x00FF00FF;\n\tx = ( x | ( x << 4 ) ) & 0x0F0F0F0F;\n\tx = ( x | ( x << 2 ) ) & 0x33333333;\n\tx = ( x | ( x << 1 ) ) & 0x55555555;\n\n\ty = ( y | ( y << 8 ) ) & 0x00FF00FF;\n\ty = ( y | ( y << 4 ) ) & 0x0F0F0F0F;\n\ty = ( y | ( y << 2 ) ) & 0x33333333;\n\ty = ( y | ( y << 1 ) ) & 0x55555555;\n\n\treturn x | ( y << 1 );\n\n}\n\n// find the leftmost node of a polygon ring\nfunction getLeftmost( start ) {\n\n\tlet p = start,\n\t\tleftmost = start;\n\tdo {\n\n\t\tif ( p.x < leftmost.x || ( p.x === leftmost.x && p.y < leftmost.y ) ) leftmost = p;\n\t\tp = p.next;\n\n\t} while ( p !== start );\n\n\treturn leftmost;\n\n}\n\n// check if a point lies within a convex triangle\nfunction pointInTriangle( ax, ay, bx, by, cx, cy, px, py ) {\n\n\treturn ( cx - px ) * ( ay - py ) - ( ax - px ) * ( cy - py ) >= 0 &&\n\t\t\t( ax - px ) * ( by - py ) - ( bx - px ) * ( ay - py ) >= 0 &&\n\t\t\t( bx - px ) * ( cy - py ) - ( cx - px ) * ( by - py ) >= 0;\n\n}\n\n// check if a diagonal between two polygon nodes is valid (lies in polygon interior)\nfunction isValidDiagonal( a, b ) {\n\n\treturn a.next.i !== b.i && a.prev.i !== b.i && ! intersectsPolygon( a, b ) && // dones't intersect other edges\n\t\t( locallyInside( a, b ) && locallyInside( b, a ) && middleInside( a, b ) && // locally visible\n\t\t( area( a.prev, a, b.prev ) || area( a, b.prev, b ) ) || // does not create opposite-facing sectors\n\t\tequals( a, b ) && area( a.prev, a, a.next ) > 0 && area( b.prev, b, b.next ) > 0 ); // special zero-length case\n\n}\n\n// signed area of a triangle\nfunction area( p, q, r ) {\n\n\treturn ( q.y - p.y ) * ( r.x - q.x ) - ( q.x - p.x ) * ( r.y - q.y );\n\n}\n\n// check if two points are equal\nfunction equals( p1, p2 ) {\n\n\treturn p1.x === p2.x && p1.y === p2.y;\n\n}\n\n// check if two segments intersect\nfunction intersects( p1, q1, p2, q2 ) {\n\n\tconst o1 = sign( area( p1, q1, p2 ) );\n\tconst o2 = sign( area( p1, q1, q2 ) );\n\tconst o3 = sign( area( p2, q2, p1 ) );\n\tconst o4 = sign( area( p2, q2, q1 ) );\n\n\tif ( o1 !== o2 && o3 !== o4 ) return true; // general case\n\n\tif ( o1 === 0 && onSegment( p1, p2, q1 ) ) return true; // p1, q1 and p2 are collinear and p2 lies on p1q1\n\tif ( o2 === 0 && onSegment( p1, q2, q1 ) ) return true; // p1, q1 and q2 are collinear and q2 lies on p1q1\n\tif ( o3 === 0 && onSegment( p2, p1, q2 ) ) return true; // p2, q2 and p1 are collinear and p1 lies on p2q2\n\tif ( o4 === 0 && onSegment( p2, q1, q2 ) ) return true; // p2, q2 and q1 are collinear and q1 lies on p2q2\n\n\treturn false;\n\n}\n\n// for collinear points p, q, r, check if point q lies on segment pr\nfunction onSegment( p, q, r ) {\n\n\treturn q.x <= Math.max( p.x, r.x ) && q.x >= Math.min( p.x, r.x ) && q.y <= Math.max( p.y, r.y ) && q.y >= Math.min( p.y, r.y );\n\n}\n\nfunction sign( num ) {\n\n\treturn num > 0 ? 1 : num < 0 ? - 1 : 0;\n\n}\n\n// check if a polygon diagonal intersects any polygon segments\nfunction intersectsPolygon( a, b ) {\n\n\tlet p = a;\n\tdo {\n\n\t\tif ( p.i !== a.i && p.next.i !== a.i && p.i !== b.i && p.next.i !== b.i &&\n\t\t\t\tintersects( p, p.next, a, b ) ) return true;\n\t\tp = p.next;\n\n\t} while ( p !== a );\n\n\treturn false;\n\n}\n\n// check if a polygon diagonal is locally inside the polygon\nfunction locallyInside( a, b ) {\n\n\treturn area( a.prev, a, a.next ) < 0 ?\n\t\tarea( a, b, a.next ) >= 0 && area( a, a.prev, b ) >= 0 :\n\t\tarea( a, b, a.prev ) < 0 || area( a, a.next, b ) < 0;\n\n}\n\n// check if the middle point of a polygon diagonal is inside the polygon\nfunction middleInside( a, b ) {\n\n\tlet p = a,\n\t\tinside = false;\n\tconst px = ( a.x + b.x ) / 2,\n\t\tpy = ( a.y + b.y ) / 2;\n\tdo {\n\n\t\tif ( ( ( p.y > py ) !== ( p.next.y > py ) ) && p.next.y !== p.y &&\n\t\t\t\t( px < ( p.next.x - p.x ) * ( py - p.y ) / ( p.next.y - p.y ) + p.x ) )\n\t\t\tinside = ! inside;\n\t\tp = p.next;\n\n\t} while ( p !== a );\n\n\treturn inside;\n\n}\n\n// link two polygon vertices with a bridge; if the vertices belong to the same ring, it splits polygon into two;\n// if one belongs to the outer ring and another to a hole, it merges it into a single ring\nfunction splitPolygon( a, b ) {\n\n\tconst a2 = new Node( a.i, a.x, a.y ),\n\t\tb2 = new Node( b.i, b.x, b.y ),\n\t\tan = a.next,\n\t\tbp = b.prev;\n\n\ta.next = b;\n\tb.prev = a;\n\n\ta2.next = an;\n\tan.prev = a2;\n\n\tb2.next = a2;\n\ta2.prev = b2;\n\n\tbp.next = b2;\n\tb2.prev = bp;\n\n\treturn b2;\n\n}\n\n// create a node and optionally link it with previous one (in a circular doubly linked list)\nfunction insertNode( i, x, y, last ) {\n\n\tconst p = new Node( i, x, y );\n\n\tif ( ! last ) {\n\n\t\tp.prev = p;\n\t\tp.next = p;\n\n\t} else {\n\n\t\tp.next = last.next;\n\t\tp.prev = last;\n\t\tlast.next.prev = p;\n\t\tlast.next = p;\n\n\t}\n\n\treturn p;\n\n}\n\nfunction removeNode( p ) {\n\n\tp.next.prev = p.prev;\n\tp.prev.next = p.next;\n\n\tif ( p.prevZ ) p.prevZ.nextZ = p.nextZ;\n\tif ( p.nextZ ) p.nextZ.prevZ = p.prevZ;\n\n}\n\nfunction Node( i, x, y ) {\n\n\t// vertex index in coordinates array\n\tthis.i = i;\n\n\t// vertex coordinates\n\tthis.x = x;\n\tthis.y = y;\n\n\t// previous and next vertex nodes in a polygon ring\n\tthis.prev = null;\n\tthis.next = null;\n\n\t// z-order curve value\n\tthis.z = null;\n\n\t// previous and next nodes in z-order\n\tthis.prevZ = null;\n\tthis.nextZ = null;\n\n\t// indicates whether this is a steiner point\n\tthis.steiner = false;\n\n}\n\nfunction signedArea( data, start, end, dim ) {\n\n\tlet sum = 0;\n\tfor ( let i = start, j = end - dim; i < end; i += dim ) {\n\n\t\tsum += ( data[ j ] - data[ i ] ) * ( data[ i + 1 ] + data[ j + 1 ] );\n\t\tj = i;\n\n\t}\n\n\treturn sum;\n\n}\n\nconst ShapeUtils = {\n\n\t// calculate area of the contour polygon\n\n\tarea: function ( contour ) {\n\n\t\tconst n = contour.length;\n\t\tlet a = 0.0;\n\n\t\tfor ( let p = n - 1, q = 0; q < n; p = q ++ ) {\n\n\t\t\ta += contour[ p ].x * contour[ q ].y - contour[ q ].x * contour[ p ].y;\n\n\t\t}\n\n\t\treturn a * 0.5;\n\n\t},\n\n\tisClockWise: function ( pts ) {\n\n\t\treturn ShapeUtils.area( pts ) < 0;\n\n\t},\n\n\ttriangulateShape: function ( contour, holes ) {\n\n\t\tconst vertices = []; // flat array of vertices like [ x0,y0, x1,y1, x2,y2, ... ]\n\t\tconst holeIndices = []; // array of hole indices\n\t\tconst faces = []; // final array of vertex indices like [ [ a,b,d ], [ b,c,d ] ]\n\n\t\tremoveDupEndPts( contour );\n\t\taddContour( vertices, contour );\n\n\t\t//\n\n\t\tlet holeIndex = contour.length;\n\n\t\tholes.forEach( removeDupEndPts );\n\n\t\tfor ( let i = 0; i < holes.length; i ++ ) {\n\n\t\t\tholeIndices.push( holeIndex );\n\t\t\tholeIndex += holes[ i ].length;\n\t\t\taddContour( vertices, holes[ i ] );\n\n\t\t}\n\n\t\t//\n\n\t\tconst triangles = Earcut.triangulate( vertices, holeIndices );\n\n\t\t//\n\n\t\tfor ( let i = 0; i < triangles.length; i += 3 ) {\n\n\t\t\tfaces.push( triangles.slice( i, i + 3 ) );\n\n\t\t}\n\n\t\treturn faces;\n\n\t}\n\n};\n\nfunction removeDupEndPts( points ) {\n\n\tconst l = points.length;\n\n\tif ( l > 2 && points[ l - 1 ].equals( points[ 0 ] ) ) {\n\n\t\tpoints.pop();\n\n\t}\n\n}\n\nfunction addContour( vertices, contour ) {\n\n\tfor ( let i = 0; i < contour.length; i ++ ) {\n\n\t\tvertices.push( contour[ i ].x );\n\t\tvertices.push( contour[ i ].y );\n\n\t}\n\n}\n\n/**\n * Creates extruded geometry from a path shape.\n *\n * parameters = {\n *\n *  curveSegments: <int>, // number of points on the curves\n *  steps: <int>, // number of points for z-side extrusions / used for subdividing segments of extrude spline too\n *  depth: <float>, // Depth to extrude the shape\n *\n *  bevelEnabled: <bool>, // turn on bevel\n *  bevelThickness: <float>, // how deep into the original shape bevel goes\n *  bevelSize: <float>, // how far from shape outline (including bevelOffset) is bevel\n *  bevelOffset: <float>, // how far from shape outline does bevel start\n *  bevelSegments: <int>, // number of bevel layers\n *\n *  extrudePath: <THREE.Curve> // curve to extrude shape along\n *\n *  UVGenerator: <Object> // object that provides UV generator functions\n *\n * }\n */\n\nclass ExtrudeBufferGeometry extends BufferGeometry {\n\n\tconstructor( shapes, options ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'ExtrudeBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tshapes: shapes,\n\t\t\toptions: options\n\t\t};\n\n\t\tshapes = Array.isArray( shapes ) ? shapes : [ shapes ];\n\n\t\tconst scope = this;\n\n\t\tconst verticesArray = [];\n\t\tconst uvArray = [];\n\n\t\tfor ( let i = 0, l = shapes.length; i < l; i ++ ) {\n\n\t\t\tconst shape = shapes[ i ];\n\t\t\taddShape( shape );\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( verticesArray, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvArray, 2 ) );\n\n\t\tthis.computeVertexNormals();\n\n\t\t// functions\n\n\t\tfunction addShape( shape ) {\n\n\t\t\tconst placeholder = [];\n\n\t\t\t// options\n\n\t\t\tconst curveSegments = options.curveSegments !== undefined ? options.curveSegments : 12;\n\t\t\tconst steps = options.steps !== undefined ? options.steps : 1;\n\t\t\tlet depth = options.depth !== undefined ? options.depth : 100;\n\n\t\t\tlet bevelEnabled = options.bevelEnabled !== undefined ? options.bevelEnabled : true;\n\t\t\tlet bevelThickness = options.bevelThickness !== undefined ? options.bevelThickness : 6;\n\t\t\tlet bevelSize = options.bevelSize !== undefined ? options.bevelSize : bevelThickness - 2;\n\t\t\tlet bevelOffset = options.bevelOffset !== undefined ? options.bevelOffset : 0;\n\t\t\tlet bevelSegments = options.bevelSegments !== undefined ? options.bevelSegments : 3;\n\n\t\t\tconst extrudePath = options.extrudePath;\n\n\t\t\tconst uvgen = options.UVGenerator !== undefined ? options.UVGenerator : WorldUVGenerator;\n\n\t\t\t// deprecated options\n\n\t\t\tif ( options.amount !== undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.ExtrudeBufferGeometry: amount has been renamed to depth.' );\n\t\t\t\tdepth = options.amount;\n\n\t\t\t}\n\n\t\t\t//\n\n\t\t\tlet extrudePts, extrudeByPath = false;\n\t\t\tlet splineTube, binormal, normal, position2;\n\n\t\t\tif ( extrudePath ) {\n\n\t\t\t\textrudePts = extrudePath.getSpacedPoints( steps );\n\n\t\t\t\textrudeByPath = true;\n\t\t\t\tbevelEnabled = false; // bevels not supported for path extrusion\n\n\t\t\t\t// SETUP TNB variables\n\n\t\t\t\t// TODO1 - have a .isClosed in spline?\n\n\t\t\t\tsplineTube = extrudePath.computeFrenetFrames( steps, false );\n\n\t\t\t\t// console.log(splineTube, 'splineTube', splineTube.normals.length, 'steps', steps, 'extrudePts', extrudePts.length);\n\n\t\t\t\tbinormal = new Vector3();\n\t\t\t\tnormal = new Vector3();\n\t\t\t\tposition2 = new Vector3();\n\n\t\t\t}\n\n\t\t\t// Safeguards if bevels are not enabled\n\n\t\t\tif ( ! bevelEnabled ) {\n\n\t\t\t\tbevelSegments = 0;\n\t\t\t\tbevelThickness = 0;\n\t\t\t\tbevelSize = 0;\n\t\t\t\tbevelOffset = 0;\n\n\t\t\t}\n\n\t\t\t// Variables initialization\n\n\t\t\tconst shapePoints = shape.extractPoints( curveSegments );\n\n\t\t\tlet vertices = shapePoints.shape;\n\t\t\tconst holes = shapePoints.holes;\n\n\t\t\tconst reverse = ! ShapeUtils.isClockWise( vertices );\n\n\t\t\tif ( reverse ) {\n\n\t\t\t\tvertices = vertices.reverse();\n\n\t\t\t\t// Maybe we should also check if holes are in the opposite direction, just to be safe ...\n\n\t\t\t\tfor ( let h = 0, hl = holes.length; h < hl; h ++ ) {\n\n\t\t\t\t\tconst ahole = holes[ h ];\n\n\t\t\t\t\tif ( ShapeUtils.isClockWise( ahole ) ) {\n\n\t\t\t\t\t\tholes[ h ] = ahole.reverse();\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\n\t\t\tconst faces = ShapeUtils.triangulateShape( vertices, holes );\n\n\t\t\t/* Vertices */\n\n\t\t\tconst contour = vertices; // vertices has all points but contour has only points of circumference\n\n\t\t\tfor ( let h = 0, hl = holes.length; h < hl; h ++ ) {\n\n\t\t\t\tconst ahole = holes[ h ];\n\n\t\t\t\tvertices = vertices.concat( ahole );\n\n\t\t\t}\n\n\n\t\t\tfunction scalePt2( pt, vec, size ) {\n\n\t\t\t\tif ( ! vec ) console.error( 'THREE.ExtrudeGeometry: vec does not exist' );\n\n\t\t\t\treturn vec.clone().multiplyScalar( size ).add( pt );\n\n\t\t\t}\n\n\t\t\tconst vlen = vertices.length, flen = faces.length;\n\n\n\t\t\t// Find directions for point movement\n\n\n\t\t\tfunction getBevelVec( inPt, inPrev, inNext ) {\n\n\t\t\t\t// computes for inPt the corresponding point inPt' on a new contour\n\t\t\t\t//   shifted by 1 unit (length of normalized vector) to the left\n\t\t\t\t// if we walk along contour clockwise, this new contour is outside the old one\n\t\t\t\t//\n\t\t\t\t// inPt' is the intersection of the two lines parallel to the two\n\t\t\t\t//  adjacent edges of inPt at a distance of 1 unit on the left side.\n\n\t\t\t\tlet v_trans_x, v_trans_y, shrink_by; // resulting translation vector for inPt\n\n\t\t\t\t// good reading for geometry algorithms (here: line-line intersection)\n\t\t\t\t// http://geomalgorithms.com/a05-_intersect-1.html\n\n\t\t\t\tconst v_prev_x = inPt.x - inPrev.x,\n\t\t\t\t\tv_prev_y = inPt.y - inPrev.y;\n\t\t\t\tconst v_next_x = inNext.x - inPt.x,\n\t\t\t\t\tv_next_y = inNext.y - inPt.y;\n\n\t\t\t\tconst v_prev_lensq = ( v_prev_x * v_prev_x + v_prev_y * v_prev_y );\n\n\t\t\t\t// check for collinear edges\n\t\t\t\tconst collinear0 = ( v_prev_x * v_next_y - v_prev_y * v_next_x );\n\n\t\t\t\tif ( Math.abs( collinear0 ) > Number.EPSILON ) {\n\n\t\t\t\t\t// not collinear\n\n\t\t\t\t\t// length of vectors for normalizing\n\n\t\t\t\t\tconst v_prev_len = Math.sqrt( v_prev_lensq );\n\t\t\t\t\tconst v_next_len = Math.sqrt( v_next_x * v_next_x + v_next_y * v_next_y );\n\n\t\t\t\t\t// shift adjacent points by unit vectors to the left\n\n\t\t\t\t\tconst ptPrevShift_x = ( inPrev.x - v_prev_y / v_prev_len );\n\t\t\t\t\tconst ptPrevShift_y = ( inPrev.y + v_prev_x / v_prev_len );\n\n\t\t\t\t\tconst ptNextShift_x = ( inNext.x - v_next_y / v_next_len );\n\t\t\t\t\tconst ptNextShift_y = ( inNext.y + v_next_x / v_next_len );\n\n\t\t\t\t\t// scaling factor for v_prev to intersection point\n\n\t\t\t\t\tconst sf = ( ( ptNextShift_x - ptPrevShift_x ) * v_next_y -\n\t\t\t\t\t\t\t( ptNextShift_y - ptPrevShift_y ) * v_next_x ) /\n\t\t\t\t\t\t( v_prev_x * v_next_y - v_prev_y * v_next_x );\n\n\t\t\t\t\t// vector from inPt to intersection point\n\n\t\t\t\t\tv_trans_x = ( ptPrevShift_x + v_prev_x * sf - inPt.x );\n\t\t\t\t\tv_trans_y = ( ptPrevShift_y + v_prev_y * sf - inPt.y );\n\n\t\t\t\t\t// Don't normalize!, otherwise sharp corners become ugly\n\t\t\t\t\t//  but prevent crazy spikes\n\t\t\t\t\tconst v_trans_lensq = ( v_trans_x * v_trans_x + v_trans_y * v_trans_y );\n\t\t\t\t\tif ( v_trans_lensq <= 2 ) {\n\n\t\t\t\t\t\treturn new Vector2( v_trans_x, v_trans_y );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tshrink_by = Math.sqrt( v_trans_lensq / 2 );\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// handle special case of collinear edges\n\n\t\t\t\t\tlet direction_eq = false; // assumes: opposite\n\n\t\t\t\t\tif ( v_prev_x > Number.EPSILON ) {\n\n\t\t\t\t\t\tif ( v_next_x > Number.EPSILON ) {\n\n\t\t\t\t\t\t\tdirection_eq = true;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tif ( v_prev_x < - Number.EPSILON ) {\n\n\t\t\t\t\t\t\tif ( v_next_x < - Number.EPSILON ) {\n\n\t\t\t\t\t\t\t\tdirection_eq = true;\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tif ( Math.sign( v_prev_y ) === Math.sign( v_next_y ) ) {\n\n\t\t\t\t\t\t\t\tdirection_eq = true;\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( direction_eq ) {\n\n\t\t\t\t\t\t// console.log(\"Warning: lines are a straight sequence\");\n\t\t\t\t\t\tv_trans_x = - v_prev_y;\n\t\t\t\t\t\tv_trans_y = v_prev_x;\n\t\t\t\t\t\tshrink_by = Math.sqrt( v_prev_lensq );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\t// console.log(\"Warning: lines are a straight spike\");\n\t\t\t\t\t\tv_trans_x = v_prev_x;\n\t\t\t\t\t\tv_trans_y = v_prev_y;\n\t\t\t\t\t\tshrink_by = Math.sqrt( v_prev_lensq / 2 );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\treturn new Vector2( v_trans_x / shrink_by, v_trans_y / shrink_by );\n\n\t\t\t}\n\n\n\t\t\tconst contourMovements = [];\n\n\t\t\tfor ( let i = 0, il = contour.length, j = il - 1, k = i + 1; i < il; i ++, j ++, k ++ ) {\n\n\t\t\t\tif ( j === il ) j = 0;\n\t\t\t\tif ( k === il ) k = 0;\n\n\t\t\t\t//  (j)---(i)---(k)\n\t\t\t\t// console.log('i,j,k', i, j , k)\n\n\t\t\t\tcontourMovements[ i ] = getBevelVec( contour[ i ], contour[ j ], contour[ k ] );\n\n\t\t\t}\n\n\t\t\tconst holesMovements = [];\n\t\t\tlet oneHoleMovements, verticesMovements = contourMovements.concat();\n\n\t\t\tfor ( let h = 0, hl = holes.length; h < hl; h ++ ) {\n\n\t\t\t\tconst ahole = holes[ h ];\n\n\t\t\t\toneHoleMovements = [];\n\n\t\t\t\tfor ( let i = 0, il = ahole.length, j = il - 1, k = i + 1; i < il; i ++, j ++, k ++ ) {\n\n\t\t\t\t\tif ( j === il ) j = 0;\n\t\t\t\t\tif ( k === il ) k = 0;\n\n\t\t\t\t\t//  (j)---(i)---(k)\n\t\t\t\t\toneHoleMovements[ i ] = getBevelVec( ahole[ i ], ahole[ j ], ahole[ k ] );\n\n\t\t\t\t}\n\n\t\t\t\tholesMovements.push( oneHoleMovements );\n\t\t\t\tverticesMovements = verticesMovements.concat( oneHoleMovements );\n\n\t\t\t}\n\n\n\t\t\t// Loop bevelSegments, 1 for the front, 1 for the back\n\n\t\t\tfor ( let b = 0; b < bevelSegments; b ++ ) {\n\n\t\t\t\t//for ( b = bevelSegments; b > 0; b -- ) {\n\n\t\t\t\tconst t = b / bevelSegments;\n\t\t\t\tconst z = bevelThickness * Math.cos( t * Math.PI / 2 );\n\t\t\t\tconst bs = bevelSize * Math.sin( t * Math.PI / 2 ) + bevelOffset;\n\n\t\t\t\t// contract shape\n\n\t\t\t\tfor ( let i = 0, il = contour.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst vert = scalePt2( contour[ i ], contourMovements[ i ], bs );\n\n\t\t\t\t\tv( vert.x, vert.y, - z );\n\n\t\t\t\t}\n\n\t\t\t\t// expand holes\n\n\t\t\t\tfor ( let h = 0, hl = holes.length; h < hl; h ++ ) {\n\n\t\t\t\t\tconst ahole = holes[ h ];\n\t\t\t\t\toneHoleMovements = holesMovements[ h ];\n\n\t\t\t\t\tfor ( let i = 0, il = ahole.length; i < il; i ++ ) {\n\n\t\t\t\t\t\tconst vert = scalePt2( ahole[ i ], oneHoleMovements[ i ], bs );\n\n\t\t\t\t\t\tv( vert.x, vert.y, - z );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tconst bs = bevelSize + bevelOffset;\n\n\t\t\t// Back facing vertices\n\n\t\t\tfor ( let i = 0; i < vlen; i ++ ) {\n\n\t\t\t\tconst vert = bevelEnabled ? scalePt2( vertices[ i ], verticesMovements[ i ], bs ) : vertices[ i ];\n\n\t\t\t\tif ( ! extrudeByPath ) {\n\n\t\t\t\t\tv( vert.x, vert.y, 0 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// v( vert.x, vert.y + extrudePts[ 0 ].y, extrudePts[ 0 ].x );\n\n\t\t\t\t\tnormal.copy( splineTube.normals[ 0 ] ).multiplyScalar( vert.x );\n\t\t\t\t\tbinormal.copy( splineTube.binormals[ 0 ] ).multiplyScalar( vert.y );\n\n\t\t\t\t\tposition2.copy( extrudePts[ 0 ] ).add( normal ).add( binormal );\n\n\t\t\t\t\tv( position2.x, position2.y, position2.z );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// Add stepped vertices...\n\t\t\t// Including front facing vertices\n\n\t\t\tfor ( let s = 1; s <= steps; s ++ ) {\n\n\t\t\t\tfor ( let i = 0; i < vlen; i ++ ) {\n\n\t\t\t\t\tconst vert = bevelEnabled ? scalePt2( vertices[ i ], verticesMovements[ i ], bs ) : vertices[ i ];\n\n\t\t\t\t\tif ( ! extrudeByPath ) {\n\n\t\t\t\t\t\tv( vert.x, vert.y, depth / steps * s );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\t// v( vert.x, vert.y + extrudePts[ s - 1 ].y, extrudePts[ s - 1 ].x );\n\n\t\t\t\t\t\tnormal.copy( splineTube.normals[ s ] ).multiplyScalar( vert.x );\n\t\t\t\t\t\tbinormal.copy( splineTube.binormals[ s ] ).multiplyScalar( vert.y );\n\n\t\t\t\t\t\tposition2.copy( extrudePts[ s ] ).add( normal ).add( binormal );\n\n\t\t\t\t\t\tv( position2.x, position2.y, position2.z );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\n\t\t\t// Add bevel segments planes\n\n\t\t\t//for ( b = 1; b <= bevelSegments; b ++ ) {\n\t\t\tfor ( let b = bevelSegments - 1; b >= 0; b -- ) {\n\n\t\t\t\tconst t = b / bevelSegments;\n\t\t\t\tconst z = bevelThickness * Math.cos( t * Math.PI / 2 );\n\t\t\t\tconst bs = bevelSize * Math.sin( t * Math.PI / 2 ) + bevelOffset;\n\n\t\t\t\t// contract shape\n\n\t\t\t\tfor ( let i = 0, il = contour.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst vert = scalePt2( contour[ i ], contourMovements[ i ], bs );\n\t\t\t\t\tv( vert.x, vert.y, depth + z );\n\n\t\t\t\t}\n\n\t\t\t\t// expand holes\n\n\t\t\t\tfor ( let h = 0, hl = holes.length; h < hl; h ++ ) {\n\n\t\t\t\t\tconst ahole = holes[ h ];\n\t\t\t\t\toneHoleMovements = holesMovements[ h ];\n\n\t\t\t\t\tfor ( let i = 0, il = ahole.length; i < il; i ++ ) {\n\n\t\t\t\t\t\tconst vert = scalePt2( ahole[ i ], oneHoleMovements[ i ], bs );\n\n\t\t\t\t\t\tif ( ! extrudeByPath ) {\n\n\t\t\t\t\t\t\tv( vert.x, vert.y, depth + z );\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tv( vert.x, vert.y + extrudePts[ steps - 1 ].y, extrudePts[ steps - 1 ].x + z );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t/* Faces */\n\n\t\t\t// Top and bottom faces\n\n\t\t\tbuildLidFaces();\n\n\t\t\t// Sides faces\n\n\t\t\tbuildSideFaces();\n\n\n\t\t\t/////  Internal functions\n\n\t\t\tfunction buildLidFaces() {\n\n\t\t\t\tconst start = verticesArray.length / 3;\n\n\t\t\t\tif ( bevelEnabled ) {\n\n\t\t\t\t\tlet layer = 0; // steps + 1\n\t\t\t\t\tlet offset = vlen * layer;\n\n\t\t\t\t\t// Bottom faces\n\n\t\t\t\t\tfor ( let i = 0; i < flen; i ++ ) {\n\n\t\t\t\t\t\tconst face = faces[ i ];\n\t\t\t\t\t\tf3( face[ 2 ] + offset, face[ 1 ] + offset, face[ 0 ] + offset );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tlayer = steps + bevelSegments * 2;\n\t\t\t\t\toffset = vlen * layer;\n\n\t\t\t\t\t// Top faces\n\n\t\t\t\t\tfor ( let i = 0; i < flen; i ++ ) {\n\n\t\t\t\t\t\tconst face = faces[ i ];\n\t\t\t\t\t\tf3( face[ 0 ] + offset, face[ 1 ] + offset, face[ 2 ] + offset );\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// Bottom faces\n\n\t\t\t\t\tfor ( let i = 0; i < flen; i ++ ) {\n\n\t\t\t\t\t\tconst face = faces[ i ];\n\t\t\t\t\t\tf3( face[ 2 ], face[ 1 ], face[ 0 ] );\n\n\t\t\t\t\t}\n\n\t\t\t\t\t// Top faces\n\n\t\t\t\t\tfor ( let i = 0; i < flen; i ++ ) {\n\n\t\t\t\t\t\tconst face = faces[ i ];\n\t\t\t\t\t\tf3( face[ 0 ] + vlen * steps, face[ 1 ] + vlen * steps, face[ 2 ] + vlen * steps );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tscope.addGroup( start, verticesArray.length / 3 - start, 0 );\n\n\t\t\t}\n\n\t\t\t// Create faces for the z-sides of the shape\n\n\t\t\tfunction buildSideFaces() {\n\n\t\t\t\tconst start = verticesArray.length / 3;\n\t\t\t\tlet layeroffset = 0;\n\t\t\t\tsidewalls( contour, layeroffset );\n\t\t\t\tlayeroffset += contour.length;\n\n\t\t\t\tfor ( let h = 0, hl = holes.length; h < hl; h ++ ) {\n\n\t\t\t\t\tconst ahole = holes[ h ];\n\t\t\t\t\tsidewalls( ahole, layeroffset );\n\n\t\t\t\t\t//, true\n\t\t\t\t\tlayeroffset += ahole.length;\n\n\t\t\t\t}\n\n\n\t\t\t\tscope.addGroup( start, verticesArray.length / 3 - start, 1 );\n\n\n\t\t\t}\n\n\t\t\tfunction sidewalls( contour, layeroffset ) {\n\n\t\t\t\tlet i = contour.length;\n\n\t\t\t\twhile ( -- i >= 0 ) {\n\n\t\t\t\t\tconst j = i;\n\t\t\t\t\tlet k = i - 1;\n\t\t\t\t\tif ( k < 0 ) k = contour.length - 1;\n\n\t\t\t\t\t//console.log('b', i,j, i-1, k,vertices.length);\n\n\t\t\t\t\tfor ( let s = 0, sl = ( steps + bevelSegments * 2 ); s < sl; s ++ ) {\n\n\t\t\t\t\t\tconst slen1 = vlen * s;\n\t\t\t\t\t\tconst slen2 = vlen * ( s + 1 );\n\n\t\t\t\t\t\tconst a = layeroffset + j + slen1,\n\t\t\t\t\t\t\tb = layeroffset + k + slen1,\n\t\t\t\t\t\t\tc = layeroffset + k + slen2,\n\t\t\t\t\t\t\td = layeroffset + j + slen2;\n\n\t\t\t\t\t\tf4( a, b, c, d );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tfunction v( x, y, z ) {\n\n\t\t\t\tplaceholder.push( x );\n\t\t\t\tplaceholder.push( y );\n\t\t\t\tplaceholder.push( z );\n\n\t\t\t}\n\n\n\t\t\tfunction f3( a, b, c ) {\n\n\t\t\t\taddVertex( a );\n\t\t\t\taddVertex( b );\n\t\t\t\taddVertex( c );\n\n\t\t\t\tconst nextIndex = verticesArray.length / 3;\n\t\t\t\tconst uvs = uvgen.generateTopUV( scope, verticesArray, nextIndex - 3, nextIndex - 2, nextIndex - 1 );\n\n\t\t\t\taddUV( uvs[ 0 ] );\n\t\t\t\taddUV( uvs[ 1 ] );\n\t\t\t\taddUV( uvs[ 2 ] );\n\n\t\t\t}\n\n\t\t\tfunction f4( a, b, c, d ) {\n\n\t\t\t\taddVertex( a );\n\t\t\t\taddVertex( b );\n\t\t\t\taddVertex( d );\n\n\t\t\t\taddVertex( b );\n\t\t\t\taddVertex( c );\n\t\t\t\taddVertex( d );\n\n\n\t\t\t\tconst nextIndex = verticesArray.length / 3;\n\t\t\t\tconst uvs = uvgen.generateSideWallUV( scope, verticesArray, nextIndex - 6, nextIndex - 3, nextIndex - 2, nextIndex - 1 );\n\n\t\t\t\taddUV( uvs[ 0 ] );\n\t\t\t\taddUV( uvs[ 1 ] );\n\t\t\t\taddUV( uvs[ 3 ] );\n\n\t\t\t\taddUV( uvs[ 1 ] );\n\t\t\t\taddUV( uvs[ 2 ] );\n\t\t\t\taddUV( uvs[ 3 ] );\n\n\t\t\t}\n\n\t\t\tfunction addVertex( index ) {\n\n\t\t\t\tverticesArray.push( placeholder[ index * 3 + 0 ] );\n\t\t\t\tverticesArray.push( placeholder[ index * 3 + 1 ] );\n\t\t\t\tverticesArray.push( placeholder[ index * 3 + 2 ] );\n\n\t\t\t}\n\n\n\t\t\tfunction addUV( vector2 ) {\n\n\t\t\t\tuvArray.push( vector2.x );\n\t\t\t\tuvArray.push( vector2.y );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = BufferGeometry.prototype.toJSON.call( this );\n\n\t\tconst shapes = this.parameters.shapes;\n\t\tconst options = this.parameters.options;\n\n\t\treturn toJSON( shapes, options, data );\n\n\t}\n\n}\n\nconst WorldUVGenerator = {\n\n\tgenerateTopUV: function ( geometry, vertices, indexA, indexB, indexC ) {\n\n\t\tconst a_x = vertices[ indexA * 3 ];\n\t\tconst a_y = vertices[ indexA * 3 + 1 ];\n\t\tconst b_x = vertices[ indexB * 3 ];\n\t\tconst b_y = vertices[ indexB * 3 + 1 ];\n\t\tconst c_x = vertices[ indexC * 3 ];\n\t\tconst c_y = vertices[ indexC * 3 + 1 ];\n\n\t\treturn [\n\t\t\tnew Vector2( a_x, a_y ),\n\t\t\tnew Vector2( b_x, b_y ),\n\t\t\tnew Vector2( c_x, c_y )\n\t\t];\n\n\t},\n\n\tgenerateSideWallUV: function ( geometry, vertices, indexA, indexB, indexC, indexD ) {\n\n\t\tconst a_x = vertices[ indexA * 3 ];\n\t\tconst a_y = vertices[ indexA * 3 + 1 ];\n\t\tconst a_z = vertices[ indexA * 3 + 2 ];\n\t\tconst b_x = vertices[ indexB * 3 ];\n\t\tconst b_y = vertices[ indexB * 3 + 1 ];\n\t\tconst b_z = vertices[ indexB * 3 + 2 ];\n\t\tconst c_x = vertices[ indexC * 3 ];\n\t\tconst c_y = vertices[ indexC * 3 + 1 ];\n\t\tconst c_z = vertices[ indexC * 3 + 2 ];\n\t\tconst d_x = vertices[ indexD * 3 ];\n\t\tconst d_y = vertices[ indexD * 3 + 1 ];\n\t\tconst d_z = vertices[ indexD * 3 + 2 ];\n\n\t\tif ( Math.abs( a_y - b_y ) < 0.01 ) {\n\n\t\t\treturn [\n\t\t\t\tnew Vector2( a_x, 1 - a_z ),\n\t\t\t\tnew Vector2( b_x, 1 - b_z ),\n\t\t\t\tnew Vector2( c_x, 1 - c_z ),\n\t\t\t\tnew Vector2( d_x, 1 - d_z )\n\t\t\t];\n\n\t\t} else {\n\n\t\t\treturn [\n\t\t\t\tnew Vector2( a_y, 1 - a_z ),\n\t\t\t\tnew Vector2( b_y, 1 - b_z ),\n\t\t\t\tnew Vector2( c_y, 1 - c_z ),\n\t\t\t\tnew Vector2( d_y, 1 - d_z )\n\t\t\t];\n\n\t\t}\n\n\t}\n\n};\n\nfunction toJSON( shapes, options, data ) {\n\n\tdata.shapes = [];\n\n\tif ( Array.isArray( shapes ) ) {\n\n\t\tfor ( let i = 0, l = shapes.length; i < l; i ++ ) {\n\n\t\t\tconst shape = shapes[ i ];\n\n\t\t\tdata.shapes.push( shape.uuid );\n\n\t\t}\n\n\t} else {\n\n\t\tdata.shapes.push( shapes.uuid );\n\n\t}\n\n\tif ( options.extrudePath !== undefined ) data.options.extrudePath = options.extrudePath.toJSON();\n\n\treturn data;\n\n}\n\n/**\n * Creates extruded geometry from a path shape.\n *\n * parameters = {\n *\n *  curveSegments: <int>, // number of points on the curves\n *  steps: <int>, // number of points for z-side extrusions / used for subdividing segments of extrude spline too\n *  depth: <float>, // Depth to extrude the shape\n *\n *  bevelEnabled: <bool>, // turn on bevel\n *  bevelThickness: <float>, // how deep into the original shape bevel goes\n *  bevelSize: <float>, // how far from shape outline (including bevelOffset) is bevel\n *  bevelOffset: <float>, // how far from shape outline does bevel start\n *  bevelSegments: <int>, // number of bevel layers\n *\n *  extrudePath: <THREE.Curve> // curve to extrude shape along\n *\n *  UVGenerator: <Object> // object that provides UV generator functions\n *\n * }\n */\n\nclass ExtrudeGeometry extends Geometry {\n\n\tconstructor( shapes, options ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'ExtrudeGeometry';\n\n\t\tthis.parameters = {\n\t\t\tshapes: shapes,\n\t\t\toptions: options\n\t\t};\n\n\t\tthis.fromBufferGeometry( new ExtrudeBufferGeometry( shapes, options ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = super.toJSON();\n\n\t\tconst shapes = this.parameters.shapes;\n\t\tconst options = this.parameters.options;\n\n\t\treturn toJSON$1( shapes, options, data );\n\n\t}\n\n}\n\nfunction toJSON$1( shapes, options, data ) {\n\n\tdata.shapes = [];\n\n\tif ( Array.isArray( shapes ) ) {\n\n\t\tfor ( let i = 0, l = shapes.length; i < l; i ++ ) {\n\n\t\t\tconst shape = shapes[ i ];\n\n\t\t\tdata.shapes.push( shape.uuid );\n\n\t\t}\n\n\t} else {\n\n\t\tdata.shapes.push( shapes.uuid );\n\n\t}\n\n\tif ( options.extrudePath !== undefined ) data.options.extrudePath = options.extrudePath.toJSON();\n\n\treturn data;\n\n}\n\nclass IcosahedronBufferGeometry extends PolyhedronBufferGeometry {\n\n\tconstructor( radius = 1, detail = 0 ) {\n\n\t\tconst t = ( 1 + Math.sqrt( 5 ) ) / 2;\n\n\t\tconst vertices = [\n\t\t\t- 1, t, 0, \t1, t, 0, \t- 1, - t, 0, \t1, - t, 0,\n\t\t\t0, - 1, t, \t0, 1, t,\t0, - 1, - t, \t0, 1, - t,\n\t\t\tt, 0, - 1, \tt, 0, 1, \t- t, 0, - 1, \t- t, 0, 1\n\t\t];\n\n\t\tconst indices = [\n\t\t\t0, 11, 5, \t0, 5, 1, \t0, 1, 7, \t0, 7, 10, \t0, 10, 11,\n\t\t\t1, 5, 9, \t5, 11, 4,\t11, 10, 2,\t10, 7, 6,\t7, 1, 8,\n\t\t\t3, 9, 4, \t3, 4, 2,\t3, 2, 6,\t3, 6, 8,\t3, 8, 9,\n\t\t\t4, 9, 5, \t2, 4, 11,\t6, 2, 10,\t8, 6, 7,\t9, 8, 1\n\t\t];\n\n\t\tsuper( vertices, indices, radius, detail );\n\n\t\tthis.type = 'IcosahedronBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t}\n\n}\n\nclass IcosahedronGeometry extends Geometry {\n\n\tconstructor( radius, detail ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'IcosahedronGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t\tthis.fromBufferGeometry( new IcosahedronBufferGeometry( radius, detail ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass LatheBufferGeometry extends BufferGeometry {\n\n\tconstructor( points, segments = 12, phiStart = 0, phiLength = Math.PI * 2 ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'LatheBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tpoints: points,\n\t\t\tsegments: segments,\n\t\t\tphiStart: phiStart,\n\t\t\tphiLength: phiLength\n\t\t};\n\n\t\tsegments = Math.floor( segments );\n\n\t\t// clamp phiLength so it's in range of [ 0, 2PI ]\n\n\t\tphiLength = MathUtils.clamp( phiLength, 0, Math.PI * 2 );\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst uvs = [];\n\n\t\t// helper variables\n\n\t\tconst inverseSegments = 1.0 / segments;\n\t\tconst vertex = new Vector3();\n\t\tconst uv = new Vector2();\n\n\t\t// generate vertices and uvs\n\n\t\tfor ( let i = 0; i <= segments; i ++ ) {\n\n\t\t\tconst phi = phiStart + i * inverseSegments * phiLength;\n\n\t\t\tconst sin = Math.sin( phi );\n\t\t\tconst cos = Math.cos( phi );\n\n\t\t\tfor ( let j = 0; j <= ( points.length - 1 ); j ++ ) {\n\n\t\t\t\t// vertex\n\n\t\t\t\tvertex.x = points[ j ].x * sin;\n\t\t\t\tvertex.y = points[ j ].y;\n\t\t\t\tvertex.z = points[ j ].x * cos;\n\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t// uv\n\n\t\t\t\tuv.x = i / segments;\n\t\t\t\tuv.y = j / ( points.length - 1 );\n\n\t\t\t\tuvs.push( uv.x, uv.y );\n\n\n\t\t\t}\n\n\t\t}\n\n\t\t// indices\n\n\t\tfor ( let i = 0; i < segments; i ++ ) {\n\n\t\t\tfor ( let j = 0; j < ( points.length - 1 ); j ++ ) {\n\n\t\t\t\tconst base = j + i * points.length;\n\n\t\t\t\tconst a = base;\n\t\t\t\tconst b = base + points.length;\n\t\t\t\tconst c = base + points.length + 1;\n\t\t\t\tconst d = base + 1;\n\n\t\t\t\t// faces\n\n\t\t\t\tindices.push( a, b, d );\n\t\t\t\tindices.push( b, c, d );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t\t// generate normals\n\n\t\tthis.computeVertexNormals();\n\n\t\t// if the geometry is closed, we need to average the normals along the seam.\n\t\t// because the corresponding vertices are identical (but still have different UVs).\n\n\t\tif ( phiLength === Math.PI * 2 ) {\n\n\t\t\tconst normals = this.attributes.normal.array;\n\t\t\tconst n1 = new Vector3();\n\t\t\tconst n2 = new Vector3();\n\t\t\tconst n = new Vector3();\n\n\t\t\t// this is the buffer offset for the last line of vertices\n\n\t\t\tconst base = segments * points.length * 3;\n\n\t\t\tfor ( let i = 0, j = 0; i < points.length; i ++, j += 3 ) {\n\n\t\t\t\t// select the normal of the vertex in the first line\n\n\t\t\t\tn1.x = normals[ j + 0 ];\n\t\t\t\tn1.y = normals[ j + 1 ];\n\t\t\t\tn1.z = normals[ j + 2 ];\n\n\t\t\t\t// select the normal of the vertex in the last line\n\n\t\t\t\tn2.x = normals[ base + j + 0 ];\n\t\t\t\tn2.y = normals[ base + j + 1 ];\n\t\t\t\tn2.z = normals[ base + j + 2 ];\n\n\t\t\t\t// average normals\n\n\t\t\t\tn.addVectors( n1, n2 ).normalize();\n\n\t\t\t\t// assign the new values to both normals\n\n\t\t\t\tnormals[ j + 0 ] = normals[ base + j + 0 ] = n.x;\n\t\t\t\tnormals[ j + 1 ] = normals[ base + j + 1 ] = n.y;\n\t\t\t\tnormals[ j + 2 ] = normals[ base + j + 2 ] = n.z;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n}\n\nclass LatheGeometry extends Geometry {\n\n\tconstructor( points, segments, phiStart, phiLength ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'LatheGeometry';\n\n\t\tthis.parameters = {\n\t\t\tpoints: points,\n\t\t\tsegments: segments,\n\t\t\tphiStart: phiStart,\n\t\t\tphiLength: phiLength\n\t\t};\n\n\t\tthis.fromBufferGeometry( new LatheBufferGeometry( points, segments, phiStart, phiLength ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass OctahedronBufferGeometry extends PolyhedronBufferGeometry {\n\n\tconstructor( radius = 1, detail = 0 ) {\n\n\t\tconst vertices = [\n\t\t\t1, 0, 0, \t- 1, 0, 0,\t0, 1, 0,\n\t\t\t0, - 1, 0, \t0, 0, 1,\t0, 0, - 1\n\t\t];\n\n\t\tconst indices = [\n\t\t\t0, 2, 4,\t0, 4, 3,\t0, 3, 5,\n\t\t\t0, 5, 2,\t1, 2, 5,\t1, 5, 3,\n\t\t\t1, 3, 4,\t1, 4, 2\n\t\t];\n\n\t\tsuper( vertices, indices, radius, detail );\n\n\t\tthis.type = 'OctahedronBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t}\n\n}\n\nclass OctahedronGeometry extends Geometry {\n\n\tconstructor( radius, detail ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'OctahedronGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t\tthis.fromBufferGeometry( new OctahedronBufferGeometry( radius, detail ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\n/**\n * Parametric Surfaces Geometry\n * based on the brilliant article by @prideout https://prideout.net/blog/old/blog/index.html@p=44.html\n */\n\nfunction ParametricBufferGeometry( func, slices, stacks ) {\n\n\tBufferGeometry.call( this );\n\n\tthis.type = 'ParametricBufferGeometry';\n\n\tthis.parameters = {\n\t\tfunc: func,\n\t\tslices: slices,\n\t\tstacks: stacks\n\t};\n\n\t// buffers\n\n\tconst indices = [];\n\tconst vertices = [];\n\tconst normals = [];\n\tconst uvs = [];\n\n\tconst EPS = 0.00001;\n\n\tconst normal = new Vector3();\n\n\tconst p0 = new Vector3(), p1 = new Vector3();\n\tconst pu = new Vector3(), pv = new Vector3();\n\n\tif ( func.length < 3 ) {\n\n\t\tconsole.error( 'THREE.ParametricGeometry: Function must now modify a Vector3 as third parameter.' );\n\n\t}\n\n\t// generate vertices, normals and uvs\n\n\tconst sliceCount = slices + 1;\n\n\tfor ( let i = 0; i <= stacks; i ++ ) {\n\n\t\tconst v = i / stacks;\n\n\t\tfor ( let j = 0; j <= slices; j ++ ) {\n\n\t\t\tconst u = j / slices;\n\n\t\t\t// vertex\n\n\t\t\tfunc( u, v, p0 );\n\t\t\tvertices.push( p0.x, p0.y, p0.z );\n\n\t\t\t// normal\n\n\t\t\t// approximate tangent vectors via finite differences\n\n\t\t\tif ( u - EPS >= 0 ) {\n\n\t\t\t\tfunc( u - EPS, v, p1 );\n\t\t\t\tpu.subVectors( p0, p1 );\n\n\t\t\t} else {\n\n\t\t\t\tfunc( u + EPS, v, p1 );\n\t\t\t\tpu.subVectors( p1, p0 );\n\n\t\t\t}\n\n\t\t\tif ( v - EPS >= 0 ) {\n\n\t\t\t\tfunc( u, v - EPS, p1 );\n\t\t\t\tpv.subVectors( p0, p1 );\n\n\t\t\t} else {\n\n\t\t\t\tfunc( u, v + EPS, p1 );\n\t\t\t\tpv.subVectors( p1, p0 );\n\n\t\t\t}\n\n\t\t\t// cross product of tangent vectors returns surface normal\n\n\t\t\tnormal.crossVectors( pu, pv ).normalize();\n\t\t\tnormals.push( normal.x, normal.y, normal.z );\n\n\t\t\t// uv\n\n\t\t\tuvs.push( u, v );\n\n\t\t}\n\n\t}\n\n\t// generate indices\n\n\tfor ( let i = 0; i < stacks; i ++ ) {\n\n\t\tfor ( let j = 0; j < slices; j ++ ) {\n\n\t\t\tconst a = i * sliceCount + j;\n\t\t\tconst b = i * sliceCount + j + 1;\n\t\t\tconst c = ( i + 1 ) * sliceCount + j + 1;\n\t\t\tconst d = ( i + 1 ) * sliceCount + j;\n\n\t\t\t// faces one and two\n\n\t\t\tindices.push( a, b, d );\n\t\t\tindices.push( b, c, d );\n\n\t\t}\n\n\t}\n\n\t// build geometry\n\n\tthis.setIndex( indices );\n\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n}\n\nParametricBufferGeometry.prototype = Object.create( BufferGeometry.prototype );\nParametricBufferGeometry.prototype.constructor = ParametricBufferGeometry;\n\n/**\n * Parametric Surfaces Geometry\n * based on the brilliant article by @prideout https://prideout.net/blog/old/blog/index.html@p=44.html\n */\n\nfunction ParametricGeometry( func, slices, stacks ) {\n\n\tGeometry.call( this );\n\n\tthis.type = 'ParametricGeometry';\n\n\tthis.parameters = {\n\t\tfunc: func,\n\t\tslices: slices,\n\t\tstacks: stacks\n\t};\n\n\tthis.fromBufferGeometry( new ParametricBufferGeometry( func, slices, stacks ) );\n\tthis.mergeVertices();\n\n}\n\nParametricGeometry.prototype = Object.create( Geometry.prototype );\nParametricGeometry.prototype.constructor = ParametricGeometry;\n\nclass PlaneGeometry extends Geometry {\n\n\tconstructor( width, height, widthSegments, heightSegments ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'PlaneGeometry';\n\n\t\tthis.parameters = {\n\t\t\twidth: width,\n\t\t\theight: height,\n\t\t\twidthSegments: widthSegments,\n\t\t\theightSegments: heightSegments\n\t\t};\n\n\t\tthis.fromBufferGeometry( new PlaneBufferGeometry( width, height, widthSegments, heightSegments ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass PolyhedronGeometry extends Geometry {\n\n\tconstructor( vertices, indices, radius, detail ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'PolyhedronGeometry';\n\n\t\tthis.parameters = {\n\t\t\tvertices: vertices,\n\t\t\tindices: indices,\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t\tthis.fromBufferGeometry( new PolyhedronBufferGeometry( vertices, indices, radius, detail ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass RingBufferGeometry extends BufferGeometry {\n\n\tconstructor( innerRadius = 0.5, outerRadius = 1, thetaSegments = 8, phiSegments = 1, thetaStart = 0, thetaLength = Math.PI * 2 ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'RingBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tinnerRadius: innerRadius,\n\t\t\touterRadius: outerRadius,\n\t\t\tthetaSegments: thetaSegments,\n\t\t\tphiSegments: phiSegments,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t\tthetaSegments = Math.max( 3, thetaSegments );\n\t\tphiSegments = Math.max( 1, phiSegments );\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\t// some helper variables\n\n\t\tlet radius = innerRadius;\n\t\tconst radiusStep = ( ( outerRadius - innerRadius ) / phiSegments );\n\t\tconst vertex = new Vector3();\n\t\tconst uv = new Vector2();\n\n\t\t// generate vertices, normals and uvs\n\n\t\tfor ( let j = 0; j <= phiSegments; j ++ ) {\n\n\t\t\tfor ( let i = 0; i <= thetaSegments; i ++ ) {\n\n\t\t\t\t// values are generate from the inside of the ring to the outside\n\n\t\t\t\tconst segment = thetaStart + i / thetaSegments * thetaLength;\n\n\t\t\t\t// vertex\n\n\t\t\t\tvertex.x = radius * Math.cos( segment );\n\t\t\t\tvertex.y = radius * Math.sin( segment );\n\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t// normal\n\n\t\t\t\tnormals.push( 0, 0, 1 );\n\n\t\t\t\t// uv\n\n\t\t\t\tuv.x = ( vertex.x / outerRadius + 1 ) / 2;\n\t\t\t\tuv.y = ( vertex.y / outerRadius + 1 ) / 2;\n\n\t\t\t\tuvs.push( uv.x, uv.y );\n\n\t\t\t}\n\n\t\t\t// increase the radius for next row of vertices\n\n\t\t\tradius += radiusStep;\n\n\t\t}\n\n\t\t// indices\n\n\t\tfor ( let j = 0; j < phiSegments; j ++ ) {\n\n\t\t\tconst thetaSegmentLevel = j * ( thetaSegments + 1 );\n\n\t\t\tfor ( let i = 0; i < thetaSegments; i ++ ) {\n\n\t\t\t\tconst segment = i + thetaSegmentLevel;\n\n\t\t\t\tconst a = segment;\n\t\t\t\tconst b = segment + thetaSegments + 1;\n\t\t\t\tconst c = segment + thetaSegments + 2;\n\t\t\t\tconst d = segment + 1;\n\n\t\t\t\t// faces\n\n\t\t\t\tindices.push( a, b, d );\n\t\t\t\tindices.push( b, c, d );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t}\n\n}\n\nclass RingGeometry extends Geometry {\n\n\tconstructor( innerRadius, outerRadius, thetaSegments, phiSegments, thetaStart, thetaLength ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'RingGeometry';\n\n\t\tthis.parameters = {\n\t\t\tinnerRadius: innerRadius,\n\t\t\touterRadius: outerRadius,\n\t\t\tthetaSegments: thetaSegments,\n\t\t\tphiSegments: phiSegments,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t\tthis.fromBufferGeometry( new RingBufferGeometry( innerRadius, outerRadius, thetaSegments, phiSegments, thetaStart, thetaLength ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass ShapeBufferGeometry extends BufferGeometry {\n\n\tconstructor( shapes, curveSegments = 12 ) {\n\n\t\tsuper();\n\t\tthis.type = 'ShapeBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tshapes: shapes,\n\t\t\tcurveSegments: curveSegments\n\t\t};\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\t// helper variables\n\n\t\tlet groupStart = 0;\n\t\tlet groupCount = 0;\n\n\t\t// allow single and array values for \"shapes\" parameter\n\n\t\tif ( Array.isArray( shapes ) === false ) {\n\n\t\t\taddShape( shapes );\n\n\t\t} else {\n\n\t\t\tfor ( let i = 0; i < shapes.length; i ++ ) {\n\n\t\t\t\taddShape( shapes[ i ] );\n\n\t\t\t\tthis.addGroup( groupStart, groupCount, i ); // enables MultiMaterial support\n\n\t\t\t\tgroupStart += groupCount;\n\t\t\t\tgroupCount = 0;\n\n\t\t\t}\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\n\t\t// helper functions\n\n\t\tfunction addShape( shape ) {\n\n\t\t\tconst indexOffset = vertices.length / 3;\n\t\t\tconst points = shape.extractPoints( curveSegments );\n\n\t\t\tlet shapeVertices = points.shape;\n\t\t\tconst shapeHoles = points.holes;\n\n\t\t\t// check direction of vertices\n\n\t\t\tif ( ShapeUtils.isClockWise( shapeVertices ) === false ) {\n\n\t\t\t\tshapeVertices = shapeVertices.reverse();\n\n\t\t\t}\n\n\t\t\tfor ( let i = 0, l = shapeHoles.length; i < l; i ++ ) {\n\n\t\t\t\tconst shapeHole = shapeHoles[ i ];\n\n\t\t\t\tif ( ShapeUtils.isClockWise( shapeHole ) === true ) {\n\n\t\t\t\t\tshapeHoles[ i ] = shapeHole.reverse();\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tconst faces = ShapeUtils.triangulateShape( shapeVertices, shapeHoles );\n\n\t\t\t// join vertices of inner and outer paths to a single array\n\n\t\t\tfor ( let i = 0, l = shapeHoles.length; i < l; i ++ ) {\n\n\t\t\t\tconst shapeHole = shapeHoles[ i ];\n\t\t\t\tshapeVertices = shapeVertices.concat( shapeHole );\n\n\t\t\t}\n\n\t\t\t// vertices, normals, uvs\n\n\t\t\tfor ( let i = 0, l = shapeVertices.length; i < l; i ++ ) {\n\n\t\t\t\tconst vertex = shapeVertices[ i ];\n\n\t\t\t\tvertices.push( vertex.x, vertex.y, 0 );\n\t\t\t\tnormals.push( 0, 0, 1 );\n\t\t\t\tuvs.push( vertex.x, vertex.y ); // world uvs\n\n\t\t\t}\n\n\t\t\t// incides\n\n\t\t\tfor ( let i = 0, l = faces.length; i < l; i ++ ) {\n\n\t\t\t\tconst face = faces[ i ];\n\n\t\t\t\tconst a = face[ 0 ] + indexOffset;\n\t\t\t\tconst b = face[ 1 ] + indexOffset;\n\t\t\t\tconst c = face[ 2 ] + indexOffset;\n\n\t\t\t\tindices.push( a, b, c );\n\t\t\t\tgroupCount += 3;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = BufferGeometry.prototype.toJSON.call( this );\n\n\t\tconst shapes = this.parameters.shapes;\n\n\t\treturn toJSON$2( shapes, data );\n\n\t}\n\n}\n\nfunction toJSON$2( shapes, data ) {\n\n\tdata.shapes = [];\n\n\tif ( Array.isArray( shapes ) ) {\n\n\t\tfor ( let i = 0, l = shapes.length; i < l; i ++ ) {\n\n\t\t\tconst shape = shapes[ i ];\n\n\t\t\tdata.shapes.push( shape.uuid );\n\n\t\t}\n\n\t} else {\n\n\t\tdata.shapes.push( shapes.uuid );\n\n\t}\n\n\treturn data;\n\n}\n\nclass ShapeGeometry extends Geometry {\n\n\tconstructor( shapes, curveSegments ) {\n\n\t\tsuper();\n\t\tthis.type = 'ShapeGeometry';\n\n\t\tif ( typeof curveSegments === 'object' ) {\n\n\t\t\tconsole.warn( 'THREE.ShapeGeometry: Options parameter has been removed.' );\n\n\t\t\tcurveSegments = curveSegments.curveSegments;\n\n\t\t}\n\n\t\tthis.parameters = {\n\t\t\tshapes: shapes,\n\t\t\tcurveSegments: curveSegments\n\t\t};\n\n\t\tthis.fromBufferGeometry( new ShapeBufferGeometry( shapes, curveSegments ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = Geometry.prototype.toJSON.call( this );\n\n\t\tconst shapes = this.parameters.shapes;\n\n\t\treturn toJSON$3( shapes, data );\n\n\t}\n\n}\n\nfunction toJSON$3( shapes, data ) {\n\n\tdata.shapes = [];\n\n\tif ( Array.isArray( shapes ) ) {\n\n\t\tfor ( let i = 0, l = shapes.length; i < l; i ++ ) {\n\n\t\t\tconst shape = shapes[ i ];\n\n\t\t\tdata.shapes.push( shape.uuid );\n\n\t\t}\n\n\t} else {\n\n\t\tdata.shapes.push( shapes.uuid );\n\n\t}\n\n\treturn data;\n\n}\n\nclass SphereBufferGeometry extends BufferGeometry {\n\n\tconstructor( radius = 1, widthSegments = 8, heightSegments = 6, phiStart = 0, phiLength = Math.PI * 2, thetaStart = 0, thetaLength = Math.PI ) {\n\n\t\tsuper();\n\t\tthis.type = 'SphereBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\twidthSegments: widthSegments,\n\t\t\theightSegments: heightSegments,\n\t\t\tphiStart: phiStart,\n\t\t\tphiLength: phiLength,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t\twidthSegments = Math.max( 3, Math.floor( widthSegments ) );\n\t\theightSegments = Math.max( 2, Math.floor( heightSegments ) );\n\n\t\tconst thetaEnd = Math.min( thetaStart + thetaLength, Math.PI );\n\n\t\tlet index = 0;\n\t\tconst grid = [];\n\n\t\tconst vertex = new Vector3();\n\t\tconst normal = new Vector3();\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\t// generate vertices, normals and uvs\n\n\t\tfor ( let iy = 0; iy <= heightSegments; iy ++ ) {\n\n\t\t\tconst verticesRow = [];\n\n\t\t\tconst v = iy / heightSegments;\n\n\t\t\t// special case for the poles\n\n\t\t\tlet uOffset = 0;\n\n\t\t\tif ( iy == 0 && thetaStart == 0 ) {\n\n\t\t\t\tuOffset = 0.5 / widthSegments;\n\n\t\t\t} else if ( iy == heightSegments && thetaEnd == Math.PI ) {\n\n\t\t\t\tuOffset = - 0.5 / widthSegments;\n\n\t\t\t}\n\n\t\t\tfor ( let ix = 0; ix <= widthSegments; ix ++ ) {\n\n\t\t\t\tconst u = ix / widthSegments;\n\n\t\t\t\t// vertex\n\n\t\t\t\tvertex.x = - radius * Math.cos( phiStart + u * phiLength ) * Math.sin( thetaStart + v * thetaLength );\n\t\t\t\tvertex.y = radius * Math.cos( thetaStart + v * thetaLength );\n\t\t\t\tvertex.z = radius * Math.sin( phiStart + u * phiLength ) * Math.sin( thetaStart + v * thetaLength );\n\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t// normal\n\n\t\t\t\tnormal.copy( vertex ).normalize();\n\t\t\t\tnormals.push( normal.x, normal.y, normal.z );\n\n\t\t\t\t// uv\n\n\t\t\t\tuvs.push( u + uOffset, 1 - v );\n\n\t\t\t\tverticesRow.push( index ++ );\n\n\t\t\t}\n\n\t\t\tgrid.push( verticesRow );\n\n\t\t}\n\n\t\t// indices\n\n\t\tfor ( let iy = 0; iy < heightSegments; iy ++ ) {\n\n\t\t\tfor ( let ix = 0; ix < widthSegments; ix ++ ) {\n\n\t\t\t\tconst a = grid[ iy ][ ix + 1 ];\n\t\t\t\tconst b = grid[ iy ][ ix ];\n\t\t\t\tconst c = grid[ iy + 1 ][ ix ];\n\t\t\t\tconst d = grid[ iy + 1 ][ ix + 1 ];\n\n\t\t\t\tif ( iy !== 0 || thetaStart > 0 ) indices.push( a, b, d );\n\t\t\t\tif ( iy !== heightSegments - 1 || thetaEnd < Math.PI ) indices.push( b, c, d );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t}\n\n}\n\nclass SphereGeometry extends Geometry {\n\n\tconstructor( radius, widthSegments, heightSegments, phiStart, phiLength, thetaStart, thetaLength ) {\n\n\t\tsuper();\n\t\tthis.type = 'SphereGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\twidthSegments: widthSegments,\n\t\t\theightSegments: heightSegments,\n\t\t\tphiStart: phiStart,\n\t\t\tphiLength: phiLength,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t\tthis.fromBufferGeometry( new SphereBufferGeometry( radius, widthSegments, heightSegments, phiStart, phiLength, thetaStart, thetaLength ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass TetrahedronBufferGeometry extends PolyhedronBufferGeometry {\n\n\tconstructor( radius = 1, detail = 0 ) {\n\n\t\tconst vertices = [\n\t\t\t1, 1, 1, \t- 1, - 1, 1, \t- 1, 1, - 1, \t1, - 1, - 1\n\t\t];\n\n\t\tconst indices = [\n\t\t\t2, 1, 0, \t0, 3, 2,\t1, 3, 0,\t2, 3, 1\n\t\t];\n\n\t\tsuper( vertices, indices, radius, detail );\n\n\t\tthis.type = 'TetrahedronBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t}\n\n}\n\nclass TetrahedronGeometry extends Geometry {\n\n\tconstructor( radius, detail ) {\n\n\t\tsuper();\n\t\tthis.type = 'TetrahedronGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t\tthis.fromBufferGeometry( new TetrahedronBufferGeometry( radius, detail ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\n/**\n * Text = 3D Text\n *\n * parameters = {\n *  font: <THREE.Font>, // font\n *\n *  size: <float>, // size of the text\n *  height: <float>, // thickness to extrude text\n *  curveSegments: <int>, // number of points on the curves\n *\n *  bevelEnabled: <bool>, // turn on bevel\n *  bevelThickness: <float>, // how deep into text bevel goes\n *  bevelSize: <float>, // how far from text outline (including bevelOffset) is bevel\n *  bevelOffset: <float> // how far from text outline does bevel start\n * }\n */\n\nclass TextBufferGeometry extends ExtrudeBufferGeometry {\n\n\tconstructor( text, parameters = {} ) {\n\n\t\tconst font = parameters.font;\n\n\t\tif ( ! ( font && font.isFont ) ) {\n\n\t\t\tconsole.error( 'THREE.TextGeometry: font parameter is not an instance of THREE.Font.' );\n\t\t\treturn new BufferGeometry();\n\n\t\t}\n\n\t\tconst shapes = font.generateShapes( text, parameters.size );\n\n\t\t// translate parameters to ExtrudeGeometry API\n\n\t\tparameters.depth = parameters.height !== undefined ? parameters.height : 50;\n\n\t\t// defaults\n\n\t\tif ( parameters.bevelThickness === undefined ) parameters.bevelThickness = 10;\n\t\tif ( parameters.bevelSize === undefined ) parameters.bevelSize = 8;\n\t\tif ( parameters.bevelEnabled === undefined ) parameters.bevelEnabled = false;\n\n\t\tsuper( shapes, parameters );\n\n\t\tthis.type = 'TextBufferGeometry';\n\n\t}\n\n}\n\n/**\n * Text = 3D Text\n *\n * parameters = {\n *  font: <THREE.Font>, // font\n *\n *  size: <float>, // size of the text\n *  height: <float>, // thickness to extrude text\n *  curveSegments: <int>, // number of points on the curves\n *\n *  bevelEnabled: <bool>, // turn on bevel\n *  bevelThickness: <float>, // how deep into text bevel goes\n *  bevelSize: <float>, // how far from text outline (including bevelOffset) is bevel\n *  bevelOffset: <float> // how far from text outline does bevel start\n * }\n */\n\nclass TextGeometry extends Geometry {\n\n\tconstructor( text, parameters ) {\n\n\t\tsuper();\n\t\tthis.type = 'TextGeometry';\n\n\t\tthis.parameters = {\n\t\t\ttext: text,\n\t\t\tparameters: parameters\n\t\t};\n\n\t\tthis.fromBufferGeometry( new TextBufferGeometry( text, parameters ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass TorusBufferGeometry extends BufferGeometry {\n\n\tconstructor( radius = 1, tube = 0.4, radialSegments = 8, tubularSegments = 6, arc = Math.PI * 2 ) {\n\n\t\tsuper();\n\t\tthis.type = 'TorusBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\ttube: tube,\n\t\t\tradialSegments: radialSegments,\n\t\t\ttubularSegments: tubularSegments,\n\t\t\tarc: arc\n\t\t};\n\n\t\tradialSegments = Math.floor( radialSegments );\n\t\ttubularSegments = Math.floor( tubularSegments );\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\t// helper variables\n\n\t\tconst center = new Vector3();\n\t\tconst vertex = new Vector3();\n\t\tconst normal = new Vector3();\n\n\t\t// generate vertices, normals and uvs\n\n\t\tfor ( let j = 0; j <= radialSegments; j ++ ) {\n\n\t\t\tfor ( let i = 0; i <= tubularSegments; i ++ ) {\n\n\t\t\t\tconst u = i / tubularSegments * arc;\n\t\t\t\tconst v = j / radialSegments * Math.PI * 2;\n\n\t\t\t\t// vertex\n\n\t\t\t\tvertex.x = ( radius + tube * Math.cos( v ) ) * Math.cos( u );\n\t\t\t\tvertex.y = ( radius + tube * Math.cos( v ) ) * Math.sin( u );\n\t\t\t\tvertex.z = tube * Math.sin( v );\n\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t// normal\n\n\t\t\t\tcenter.x = radius * Math.cos( u );\n\t\t\t\tcenter.y = radius * Math.sin( u );\n\t\t\t\tnormal.subVectors( vertex, center ).normalize();\n\n\t\t\t\tnormals.push( normal.x, normal.y, normal.z );\n\n\t\t\t\t// uv\n\n\t\t\t\tuvs.push( i / tubularSegments );\n\t\t\t\tuvs.push( j / radialSegments );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// generate indices\n\n\t\tfor ( let j = 1; j <= radialSegments; j ++ ) {\n\n\t\t\tfor ( let i = 1; i <= tubularSegments; i ++ ) {\n\n\t\t\t\t// indices\n\n\t\t\t\tconst a = ( tubularSegments + 1 ) * j + i - 1;\n\t\t\t\tconst b = ( tubularSegments + 1 ) * ( j - 1 ) + i - 1;\n\t\t\t\tconst c = ( tubularSegments + 1 ) * ( j - 1 ) + i;\n\t\t\t\tconst d = ( tubularSegments + 1 ) * j + i;\n\n\t\t\t\t// faces\n\n\t\t\t\tindices.push( a, b, d );\n\t\t\t\tindices.push( b, c, d );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t}\n\n}\n\nclass TorusGeometry extends Geometry {\n\n\tconstructor( radius, tube, radialSegments, tubularSegments, arc ) {\n\n\t\tsuper();\n\t\tthis.type = 'TorusGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\ttube: tube,\n\t\t\tradialSegments: radialSegments,\n\t\t\ttubularSegments: tubularSegments,\n\t\t\tarc: arc\n\t\t};\n\n\t\tthis.fromBufferGeometry( new TorusBufferGeometry( radius, tube, radialSegments, tubularSegments, arc ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass TorusKnotBufferGeometry extends BufferGeometry {\n\n\tconstructor( radius = 1, tube = 0.4, tubularSegments = 64, radialSegments = 8, p = 2, q = 3 ) {\n\n\t\tsuper();\n\t\tthis.type = 'TorusKnotBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\ttube: tube,\n\t\t\ttubularSegments: tubularSegments,\n\t\t\tradialSegments: radialSegments,\n\t\t\tp: p,\n\t\t\tq: q\n\t\t};\n\n\t\ttubularSegments = Math.floor( tubularSegments );\n\t\tradialSegments = Math.floor( radialSegments );\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\t// helper variables\n\n\t\tconst vertex = new Vector3();\n\t\tconst normal = new Vector3();\n\n\t\tconst P1 = new Vector3();\n\t\tconst P2 = new Vector3();\n\n\t\tconst B = new Vector3();\n\t\tconst T = new Vector3();\n\t\tconst N = new Vector3();\n\n\t\t// generate vertices, normals and uvs\n\n\t\tfor ( let i = 0; i <= tubularSegments; ++ i ) {\n\n\t\t\t// the radian \"u\" is used to calculate the position on the torus curve of the current tubular segement\n\n\t\t\tconst u = i / tubularSegments * p * Math.PI * 2;\n\n\t\t\t// now we calculate two points. P1 is our current position on the curve, P2 is a little farther ahead.\n\t\t\t// these points are used to create a special \"coordinate space\", which is necessary to calculate the correct vertex positions\n\n\t\t\tcalculatePositionOnCurve( u, p, q, radius, P1 );\n\t\t\tcalculatePositionOnCurve( u + 0.01, p, q, radius, P2 );\n\n\t\t\t// calculate orthonormal basis\n\n\t\t\tT.subVectors( P2, P1 );\n\t\t\tN.addVectors( P2, P1 );\n\t\t\tB.crossVectors( T, N );\n\t\t\tN.crossVectors( B, T );\n\n\t\t\t// normalize B, N. T can be ignored, we don't use it\n\n\t\t\tB.normalize();\n\t\t\tN.normalize();\n\n\t\t\tfor ( let j = 0; j <= radialSegments; ++ j ) {\n\n\t\t\t\t// now calculate the vertices. they are nothing more than an extrusion of the torus curve.\n\t\t\t\t// because we extrude a shape in the xy-plane, there is no need to calculate a z-value.\n\n\t\t\t\tconst v = j / radialSegments * Math.PI * 2;\n\t\t\t\tconst cx = - tube * Math.cos( v );\n\t\t\t\tconst cy = tube * Math.sin( v );\n\n\t\t\t\t// now calculate the final vertex position.\n\t\t\t\t// first we orient the extrusion with our basis vectos, then we add it to the current position on the curve\n\n\t\t\t\tvertex.x = P1.x + ( cx * N.x + cy * B.x );\n\t\t\t\tvertex.y = P1.y + ( cx * N.y + cy * B.y );\n\t\t\t\tvertex.z = P1.z + ( cx * N.z + cy * B.z );\n\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t// normal (P1 is always the center/origin of the extrusion, thus we can use it to calculate the normal)\n\n\t\t\t\tnormal.subVectors( vertex, P1 ).normalize();\n\n\t\t\t\tnormals.push( normal.x, normal.y, normal.z );\n\n\t\t\t\t// uv\n\n\t\t\t\tuvs.push( i / tubularSegments );\n\t\t\t\tuvs.push( j / radialSegments );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// generate indices\n\n\t\tfor ( let j = 1; j <= tubularSegments; j ++ ) {\n\n\t\t\tfor ( let i = 1; i <= radialSegments; i ++ ) {\n\n\t\t\t\t// indices\n\n\t\t\t\tconst a = ( radialSegments + 1 ) * ( j - 1 ) + ( i - 1 );\n\t\t\t\tconst b = ( radialSegments + 1 ) * j + ( i - 1 );\n\t\t\t\tconst c = ( radialSegments + 1 ) * j + i;\n\t\t\t\tconst d = ( radialSegments + 1 ) * ( j - 1 ) + i;\n\n\t\t\t\t// faces\n\n\t\t\t\tindices.push( a, b, d );\n\t\t\t\tindices.push( b, c, d );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t\t// this function calculates the current position on the torus curve\n\n\t\tfunction calculatePositionOnCurve( u, p, q, radius, position ) {\n\n\t\t\tconst cu = Math.cos( u );\n\t\t\tconst su = Math.sin( u );\n\t\t\tconst quOverP = q / p * u;\n\t\t\tconst cs = Math.cos( quOverP );\n\n\t\t\tposition.x = radius * ( 2 + cs ) * 0.5 * cu;\n\t\t\tposition.y = radius * ( 2 + cs ) * su * 0.5;\n\t\t\tposition.z = radius * Math.sin( quOverP ) * 0.5;\n\n\t\t}\n\n\t}\n\n}\n\nclass TorusKnotGeometry extends Geometry {\n\n\tconstructor( radius, tube, tubularSegments, radialSegments, p, q, heightScale ) {\n\n\t\tsuper();\n\t\tthis.type = 'TorusKnotGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\ttube: tube,\n\t\t\ttubularSegments: tubularSegments,\n\t\t\tradialSegments: radialSegments,\n\t\t\tp: p,\n\t\t\tq: q\n\t\t};\n\n\t\tif ( heightScale !== undefined ) console.warn( 'THREE.TorusKnotGeometry: heightScale has been deprecated. Use .scale( x, y, z ) instead.' );\n\n\t\tthis.fromBufferGeometry( new TorusKnotBufferGeometry( radius, tube, tubularSegments, radialSegments, p, q ) );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass TubeBufferGeometry extends BufferGeometry {\n\n\tconstructor( path, tubularSegments = 64, radius = 1, radialSegments = 8, closed = false ) {\n\n\t\tsuper();\n\t\tthis.type = 'TubeBufferGeometry';\n\n\t\tthis.parameters = {\n\t\t\tpath: path,\n\t\t\ttubularSegments: tubularSegments,\n\t\t\tradius: radius,\n\t\t\tradialSegments: radialSegments,\n\t\t\tclosed: closed\n\t\t};\n\n\t\tconst frames = path.computeFrenetFrames( tubularSegments, closed );\n\n\t\t// expose internals\n\n\t\tthis.tangents = frames.tangents;\n\t\tthis.normals = frames.normals;\n\t\tthis.binormals = frames.binormals;\n\n\t\t// helper variables\n\n\t\tconst vertex = new Vector3();\n\t\tconst normal = new Vector3();\n\t\tconst uv = new Vector2();\n\t\tlet P = new Vector3();\n\n\t\t// buffer\n\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\t\tconst indices = [];\n\n\t\t// create buffer data\n\n\t\tgenerateBufferData();\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t\t// functions\n\n\t\tfunction generateBufferData() {\n\n\t\t\tfor ( let i = 0; i < tubularSegments; i ++ ) {\n\n\t\t\t\tgenerateSegment( i );\n\n\t\t\t}\n\n\t\t\t// if the geometry is not closed, generate the last row of vertices and normals\n\t\t\t// at the regular position on the given path\n\t\t\t//\n\t\t\t// if the geometry is closed, duplicate the first row of vertices and normals (uvs will differ)\n\n\t\t\tgenerateSegment( ( closed === false ) ? tubularSegments : 0 );\n\n\t\t\t// uvs are generated in a separate function.\n\t\t\t// this makes it easy compute correct values for closed geometries\n\n\t\t\tgenerateUVs();\n\n\t\t\t// finally create faces\n\n\t\t\tgenerateIndices();\n\n\t\t}\n\n\t\tfunction generateSegment( i ) {\n\n\t\t\t// we use getPointAt to sample evenly distributed points from the given path\n\n\t\t\tP = path.getPointAt( i / tubularSegments, P );\n\n\t\t\t// retrieve corresponding normal and binormal\n\n\t\t\tconst N = frames.normals[ i ];\n\t\t\tconst B = frames.binormals[ i ];\n\n\t\t\t// generate normals and vertices for the current segment\n\n\t\t\tfor ( let j = 0; j <= radialSegments; j ++ ) {\n\n\t\t\t\tconst v = j / radialSegments * Math.PI * 2;\n\n\t\t\t\tconst sin = Math.sin( v );\n\t\t\t\tconst cos = - Math.cos( v );\n\n\t\t\t\t// normal\n\n\t\t\t\tnormal.x = ( cos * N.x + sin * B.x );\n\t\t\t\tnormal.y = ( cos * N.y + sin * B.y );\n\t\t\t\tnormal.z = ( cos * N.z + sin * B.z );\n\t\t\t\tnormal.normalize();\n\n\t\t\t\tnormals.push( normal.x, normal.y, normal.z );\n\n\t\t\t\t// vertex\n\n\t\t\t\tvertex.x = P.x + radius * normal.x;\n\t\t\t\tvertex.y = P.y + radius * normal.y;\n\t\t\t\tvertex.z = P.z + radius * normal.z;\n\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction generateIndices() {\n\n\t\t\tfor ( let j = 1; j <= tubularSegments; j ++ ) {\n\n\t\t\t\tfor ( let i = 1; i <= radialSegments; i ++ ) {\n\n\t\t\t\t\tconst a = ( radialSegments + 1 ) * ( j - 1 ) + ( i - 1 );\n\t\t\t\t\tconst b = ( radialSegments + 1 ) * j + ( i - 1 );\n\t\t\t\t\tconst c = ( radialSegments + 1 ) * j + i;\n\t\t\t\t\tconst d = ( radialSegments + 1 ) * ( j - 1 ) + i;\n\n\t\t\t\t\t// faces\n\n\t\t\t\t\tindices.push( a, b, d );\n\t\t\t\t\tindices.push( b, c, d );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction generateUVs() {\n\n\t\t\tfor ( let i = 0; i <= tubularSegments; i ++ ) {\n\n\t\t\t\tfor ( let j = 0; j <= radialSegments; j ++ ) {\n\n\t\t\t\t\tuv.x = i / tubularSegments;\n\t\t\t\t\tuv.y = j / radialSegments;\n\n\t\t\t\t\tuvs.push( uv.x, uv.y );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\ttoJSON() {\n\n\t\tconst data = BufferGeometry.prototype.toJSON.call( this );\n\n\t\tdata.path = this.parameters.path.toJSON();\n\n\t\treturn data;\n\n\t}\n\n}\n\nclass TubeGeometry extends Geometry {\n\n\tconstructor( path, tubularSegments, radius, radialSegments, closed, taper ) {\n\n\t\tsuper();\n\t\tthis.type = 'TubeGeometry';\n\n\t\tthis.parameters = {\n\t\t\tpath: path,\n\t\t\ttubularSegments: tubularSegments,\n\t\t\tradius: radius,\n\t\t\tradialSegments: radialSegments,\n\t\t\tclosed: closed\n\t\t};\n\n\t\tif ( taper !== undefined ) console.warn( 'THREE.TubeGeometry: taper has been removed.' );\n\n\t\tconst bufferGeometry = new TubeBufferGeometry( path, tubularSegments, radius, radialSegments, closed );\n\n\t\t// expose internals\n\n\t\tthis.tangents = bufferGeometry.tangents;\n\t\tthis.normals = bufferGeometry.normals;\n\t\tthis.binormals = bufferGeometry.binormals;\n\n\t\t// create geometry\n\n\t\tthis.fromBufferGeometry( bufferGeometry );\n\t\tthis.mergeVertices();\n\n\t}\n\n}\n\nclass WireframeGeometry extends BufferGeometry {\n\n\tconstructor( geometry ) {\n\n\t\tsuper();\n\t\tthis.type = 'WireframeGeometry';\n\n\t\t// buffer\n\n\t\tconst vertices = [];\n\n\t\t// helper variables\n\n\t\tconst edge = [ 0, 0 ], edges = {};\n\t\tconst keys = [ 'a', 'b', 'c' ];\n\n\t\t// different logic for Geometry and BufferGeometry\n\n\t\tif ( geometry && geometry.isGeometry ) {\n\n\t\t\t// create a data structure that contains all edges without duplicates\n\n\t\t\tconst faces = geometry.faces;\n\n\t\t\tfor ( let i = 0, l = faces.length; i < l; i ++ ) {\n\n\t\t\t\tconst face = faces[ i ];\n\n\t\t\t\tfor ( let j = 0; j < 3; j ++ ) {\n\n\t\t\t\t\tconst edge1 = face[ keys[ j ] ];\n\t\t\t\t\tconst edge2 = face[ keys[ ( j + 1 ) % 3 ] ];\n\t\t\t\t\tedge[ 0 ] = Math.min( edge1, edge2 ); // sorting prevents duplicates\n\t\t\t\t\tedge[ 1 ] = Math.max( edge1, edge2 );\n\n\t\t\t\t\tconst key = edge[ 0 ] + ',' + edge[ 1 ];\n\n\t\t\t\t\tif ( edges[ key ] === undefined ) {\n\n\t\t\t\t\t\tedges[ key ] = { index1: edge[ 0 ], index2: edge[ 1 ] };\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// generate vertices\n\n\t\t\tfor ( const key in edges ) {\n\n\t\t\t\tconst e = edges[ key ];\n\n\t\t\t\tlet vertex = geometry.vertices[ e.index1 ];\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\tvertex = geometry.vertices[ e.index2 ];\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t}\n\n\t\t} else if ( geometry && geometry.isBufferGeometry ) {\n\n\t\t\tconst vertex = new Vector3();\n\n\t\t\tif ( geometry.index !== null ) {\n\n\t\t\t\t// indexed BufferGeometry\n\n\t\t\t\tconst position = geometry.attributes.position;\n\t\t\t\tconst indices = geometry.index;\n\t\t\t\tlet groups = geometry.groups;\n\n\t\t\t\tif ( groups.length === 0 ) {\n\n\t\t\t\t\tgroups = [ { start: 0, count: indices.count, materialIndex: 0 } ];\n\n\t\t\t\t}\n\n\t\t\t\t// create a data structure that contains all eges without duplicates\n\n\t\t\t\tfor ( let o = 0, ol = groups.length; o < ol; ++ o ) {\n\n\t\t\t\t\tconst group = groups[ o ];\n\n\t\t\t\t\tconst start = group.start;\n\t\t\t\t\tconst count = group.count;\n\n\t\t\t\t\tfor ( let i = start, l = ( start + count ); i < l; i += 3 ) {\n\n\t\t\t\t\t\tfor ( let j = 0; j < 3; j ++ ) {\n\n\t\t\t\t\t\t\tconst edge1 = indices.getX( i + j );\n\t\t\t\t\t\t\tconst edge2 = indices.getX( i + ( j + 1 ) % 3 );\n\t\t\t\t\t\t\tedge[ 0 ] = Math.min( edge1, edge2 ); // sorting prevents duplicates\n\t\t\t\t\t\t\tedge[ 1 ] = Math.max( edge1, edge2 );\n\n\t\t\t\t\t\t\tconst key = edge[ 0 ] + ',' + edge[ 1 ];\n\n\t\t\t\t\t\t\tif ( edges[ key ] === undefined ) {\n\n\t\t\t\t\t\t\t\tedges[ key ] = { index1: edge[ 0 ], index2: edge[ 1 ] };\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\t// generate vertices\n\n\t\t\t\tfor ( const key in edges ) {\n\n\t\t\t\t\tconst e = edges[ key ];\n\n\t\t\t\t\tvertex.fromBufferAttribute( position, e.index1 );\n\t\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t\tvertex.fromBufferAttribute( position, e.index2 );\n\t\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\t// non-indexed BufferGeometry\n\n\t\t\t\tconst position = geometry.attributes.position;\n\n\t\t\t\tfor ( let i = 0, l = ( position.count / 3 ); i < l; i ++ ) {\n\n\t\t\t\t\tfor ( let j = 0; j < 3; j ++ ) {\n\n\t\t\t\t\t\t// three edges per triangle, an edge is represented as (index1, index2)\n\t\t\t\t\t\t// e.g. the first triangle has the following edges: (0,1),(1,2),(2,0)\n\n\t\t\t\t\t\tconst index1 = 3 * i + j;\n\t\t\t\t\t\tvertex.fromBufferAttribute( position, index1 );\n\t\t\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t\t\tconst index2 = 3 * i + ( ( j + 1 ) % 3 );\n\t\t\t\t\t\tvertex.fromBufferAttribute( position, index2 );\n\t\t\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\n\t}\n\n}\n\nvar Geometries = /*#__PURE__*/Object.freeze({\n\t__proto__: null,\n\tBoxGeometry: BoxGeometry,\n\tBoxBufferGeometry: BoxBufferGeometry,\n\tCircleGeometry: CircleGeometry,\n\tCircleBufferGeometry: CircleBufferGeometry,\n\tConeGeometry: ConeGeometry,\n\tConeBufferGeometry: ConeBufferGeometry,\n\tCylinderGeometry: CylinderGeometry,\n\tCylinderBufferGeometry: CylinderBufferGeometry,\n\tDodecahedronGeometry: DodecahedronGeometry,\n\tDodecahedronBufferGeometry: DodecahedronBufferGeometry,\n\tEdgesGeometry: EdgesGeometry,\n\tExtrudeGeometry: ExtrudeGeometry,\n\tExtrudeBufferGeometry: ExtrudeBufferGeometry,\n\tIcosahedronGeometry: IcosahedronGeometry,\n\tIcosahedronBufferGeometry: IcosahedronBufferGeometry,\n\tLatheGeometry: LatheGeometry,\n\tLatheBufferGeometry: LatheBufferGeometry,\n\tOctahedronGeometry: OctahedronGeometry,\n\tOctahedronBufferGeometry: OctahedronBufferGeometry,\n\tParametricGeometry: ParametricGeometry,\n\tParametricBufferGeometry: ParametricBufferGeometry,\n\tPlaneGeometry: PlaneGeometry,\n\tPlaneBufferGeometry: PlaneBufferGeometry,\n\tPolyhedronGeometry: PolyhedronGeometry,\n\tPolyhedronBufferGeometry: PolyhedronBufferGeometry,\n\tRingGeometry: RingGeometry,\n\tRingBufferGeometry: RingBufferGeometry,\n\tShapeGeometry: ShapeGeometry,\n\tShapeBufferGeometry: ShapeBufferGeometry,\n\tSphereGeometry: SphereGeometry,\n\tSphereBufferGeometry: SphereBufferGeometry,\n\tTetrahedronGeometry: TetrahedronGeometry,\n\tTetrahedronBufferGeometry: TetrahedronBufferGeometry,\n\tTextGeometry: TextGeometry,\n\tTextBufferGeometry: TextBufferGeometry,\n\tTorusGeometry: TorusGeometry,\n\tTorusBufferGeometry: TorusBufferGeometry,\n\tTorusKnotGeometry: TorusKnotGeometry,\n\tTorusKnotBufferGeometry: TorusKnotBufferGeometry,\n\tTubeGeometry: TubeGeometry,\n\tTubeBufferGeometry: TubeBufferGeometry,\n\tWireframeGeometry: WireframeGeometry\n});\n\n/**\n * parameters = {\n *  color: <THREE.Color>\n * }\n */\n\nfunction ShadowMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.type = 'ShadowMaterial';\n\n\tthis.color = new Color( 0x000000 );\n\tthis.transparent = true;\n\n\tthis.setValues( parameters );\n\n}\n\nShadowMaterial.prototype = Object.create( Material.prototype );\nShadowMaterial.prototype.constructor = ShadowMaterial;\n\nShadowMaterial.prototype.isShadowMaterial = true;\n\nShadowMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.color.copy( source.color );\n\n\treturn this;\n\n};\n\nfunction RawShaderMaterial( parameters ) {\n\n\tShaderMaterial.call( this, parameters );\n\n\tthis.type = 'RawShaderMaterial';\n\n}\n\nRawShaderMaterial.prototype = Object.create( ShaderMaterial.prototype );\nRawShaderMaterial.prototype.constructor = RawShaderMaterial;\n\nRawShaderMaterial.prototype.isRawShaderMaterial = true;\n\n/**\n * parameters = {\n *  color: <hex>,\n *  roughness: <float>,\n *  metalness: <float>,\n *  opacity: <float>,\n *\n *  map: new THREE.Texture( <Image> ),\n *\n *  lightMap: new THREE.Texture( <Image> ),\n *  lightMapIntensity: <float>\n *\n *  aoMap: new THREE.Texture( <Image> ),\n *  aoMapIntensity: <float>\n *\n *  emissive: <hex>,\n *  emissiveIntensity: <float>\n *  emissiveMap: new THREE.Texture( <Image> ),\n *\n *  bumpMap: new THREE.Texture( <Image> ),\n *  bumpScale: <float>,\n *\n *  normalMap: new THREE.Texture( <Image> ),\n *  normalMapType: THREE.TangentSpaceNormalMap,\n *  normalScale: <Vector2>,\n *\n *  displacementMap: new THREE.Texture( <Image> ),\n *  displacementScale: <float>,\n *  displacementBias: <float>,\n *\n *  roughnessMap: new THREE.Texture( <Image> ),\n *\n *  metalnessMap: new THREE.Texture( <Image> ),\n *\n *  alphaMap: new THREE.Texture( <Image> ),\n *\n *  envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),\n *  envMapIntensity: <float>\n *\n *  refractionRatio: <float>,\n *\n *  wireframe: <boolean>,\n *  wireframeLinewidth: <float>,\n *\n *  skinning: <bool>,\n *  morphTargets: <bool>,\n *  morphNormals: <bool>\n * }\n */\n\nfunction MeshStandardMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.defines = { 'STANDARD': '' };\n\n\tthis.type = 'MeshStandardMaterial';\n\n\tthis.color = new Color( 0xffffff ); // diffuse\n\tthis.roughness = 1.0;\n\tthis.metalness = 0.0;\n\n\tthis.map = null;\n\n\tthis.lightMap = null;\n\tthis.lightMapIntensity = 1.0;\n\n\tthis.aoMap = null;\n\tthis.aoMapIntensity = 1.0;\n\n\tthis.emissive = new Color( 0x000000 );\n\tthis.emissiveIntensity = 1.0;\n\tthis.emissiveMap = null;\n\n\tthis.bumpMap = null;\n\tthis.bumpScale = 1;\n\n\tthis.normalMap = null;\n\tthis.normalMapType = TangentSpaceNormalMap;\n\tthis.normalScale = new Vector2( 1, 1 );\n\n\tthis.displacementMap = null;\n\tthis.displacementScale = 1;\n\tthis.displacementBias = 0;\n\n\tthis.roughnessMap = null;\n\n\tthis.metalnessMap = null;\n\n\tthis.alphaMap = null;\n\n\tthis.envMap = null;\n\tthis.envMapIntensity = 1.0;\n\n\tthis.refractionRatio = 0.98;\n\n\tthis.wireframe = false;\n\tthis.wireframeLinewidth = 1;\n\tthis.wireframeLinecap = 'round';\n\tthis.wireframeLinejoin = 'round';\n\n\tthis.skinning = false;\n\tthis.morphTargets = false;\n\tthis.morphNormals = false;\n\n\tthis.vertexTangents = false;\n\n\tthis.setValues( parameters );\n\n}\n\nMeshStandardMaterial.prototype = Object.create( Material.prototype );\nMeshStandardMaterial.prototype.constructor = MeshStandardMaterial;\n\nMeshStandardMaterial.prototype.isMeshStandardMaterial = true;\n\nMeshStandardMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.defines = { 'STANDARD': '' };\n\n\tthis.color.copy( source.color );\n\tthis.roughness = source.roughness;\n\tthis.metalness = source.metalness;\n\n\tthis.map = source.map;\n\n\tthis.lightMap = source.lightMap;\n\tthis.lightMapIntensity = source.lightMapIntensity;\n\n\tthis.aoMap = source.aoMap;\n\tthis.aoMapIntensity = source.aoMapIntensity;\n\n\tthis.emissive.copy( source.emissive );\n\tthis.emissiveMap = source.emissiveMap;\n\tthis.emissiveIntensity = source.emissiveIntensity;\n\n\tthis.bumpMap = source.bumpMap;\n\tthis.bumpScale = source.bumpScale;\n\n\tthis.normalMap = source.normalMap;\n\tthis.normalMapType = source.normalMapType;\n\tthis.normalScale.copy( source.normalScale );\n\n\tthis.displacementMap = source.displacementMap;\n\tthis.displacementScale = source.displacementScale;\n\tthis.displacementBias = source.displacementBias;\n\n\tthis.roughnessMap = source.roughnessMap;\n\n\tthis.metalnessMap = source.metalnessMap;\n\n\tthis.alphaMap = source.alphaMap;\n\n\tthis.envMap = source.envMap;\n\tthis.envMapIntensity = source.envMapIntensity;\n\n\tthis.refractionRatio = source.refractionRatio;\n\n\tthis.wireframe = source.wireframe;\n\tthis.wireframeLinewidth = source.wireframeLinewidth;\n\tthis.wireframeLinecap = source.wireframeLinecap;\n\tthis.wireframeLinejoin = source.wireframeLinejoin;\n\n\tthis.skinning = source.skinning;\n\tthis.morphTargets = source.morphTargets;\n\tthis.morphNormals = source.morphNormals;\n\n\tthis.vertexTangents = source.vertexTangents;\n\n\treturn this;\n\n};\n\n/**\n * parameters = {\n *  clearcoat: <float>,\n *  clearcoatMap: new THREE.Texture( <Image> ),\n *  clearcoatRoughness: <float>,\n *  clearcoatRoughnessMap: new THREE.Texture( <Image> ),\n *  clearcoatNormalScale: <Vector2>,\n *  clearcoatNormalMap: new THREE.Texture( <Image> ),\n *\n *  reflectivity: <float>,\n *  ior: <float>,\n *\n *  sheen: <Color>,\n *\n *  transmission: <float>,\n *  transmissionMap: new THREE.Texture( <Image> )\n * }\n */\n\nfunction MeshPhysicalMaterial( parameters ) {\n\n\tMeshStandardMaterial.call( this );\n\n\tthis.defines = {\n\n\t\t'STANDARD': '',\n\t\t'PHYSICAL': ''\n\n\t};\n\n\tthis.type = 'MeshPhysicalMaterial';\n\n\tthis.clearcoat = 0.0;\n\tthis.clearcoatMap = null;\n\tthis.clearcoatRoughness = 0.0;\n\tthis.clearcoatRoughnessMap = null;\n\tthis.clearcoatNormalScale = new Vector2( 1, 1 );\n\tthis.clearcoatNormalMap = null;\n\n\tthis.reflectivity = 0.5; // maps to F0 = 0.04\n\n\tObject.defineProperty( this, 'ior', {\n\t\tget: function () {\n\n\t\t\treturn ( 1 + 0.4 * this.reflectivity ) / ( 1 - 0.4 * this.reflectivity );\n\n\t\t},\n\t\tset: function ( ior ) {\n\n\t\t\tthis.reflectivity = MathUtils.clamp( 2.5 * ( ior - 1 ) / ( ior + 1 ), 0, 1 );\n\n\t\t}\n\t} );\n\n\tthis.sheen = null; // null will disable sheen bsdf\n\n\tthis.transmission = 0.0;\n\tthis.transmissionMap = null;\n\n\tthis.setValues( parameters );\n\n}\n\nMeshPhysicalMaterial.prototype = Object.create( MeshStandardMaterial.prototype );\nMeshPhysicalMaterial.prototype.constructor = MeshPhysicalMaterial;\n\nMeshPhysicalMaterial.prototype.isMeshPhysicalMaterial = true;\n\nMeshPhysicalMaterial.prototype.copy = function ( source ) {\n\n\tMeshStandardMaterial.prototype.copy.call( this, source );\n\n\tthis.defines = {\n\n\t\t'STANDARD': '',\n\t\t'PHYSICAL': ''\n\n\t};\n\n\tthis.clearcoat = source.clearcoat;\n\tthis.clearcoatMap = source.clearcoatMap;\n\tthis.clearcoatRoughness = source.clearcoatRoughness;\n\tthis.clearcoatRoughnessMap = source.clearcoatRoughnessMap;\n\tthis.clearcoatNormalMap = source.clearcoatNormalMap;\n\tthis.clearcoatNormalScale.copy( source.clearcoatNormalScale );\n\n\tthis.reflectivity = source.reflectivity;\n\n\tif ( source.sheen ) {\n\n\t\tthis.sheen = ( this.sheen || new Color() ).copy( source.sheen );\n\n\t} else {\n\n\t\tthis.sheen = null;\n\n\t}\n\n\tthis.transmission = source.transmission;\n\tthis.transmissionMap = source.transmissionMap;\n\n\treturn this;\n\n};\n\n/**\n * parameters = {\n *  color: <hex>,\n *  specular: <hex>,\n *  shininess: <float>,\n *  opacity: <float>,\n *\n *  map: new THREE.Texture( <Image> ),\n *\n *  lightMap: new THREE.Texture( <Image> ),\n *  lightMapIntensity: <float>\n *\n *  aoMap: new THREE.Texture( <Image> ),\n *  aoMapIntensity: <float>\n *\n *  emissive: <hex>,\n *  emissiveIntensity: <float>\n *  emissiveMap: new THREE.Texture( <Image> ),\n *\n *  bumpMap: new THREE.Texture( <Image> ),\n *  bumpScale: <float>,\n *\n *  normalMap: new THREE.Texture( <Image> ),\n *  normalMapType: THREE.TangentSpaceNormalMap,\n *  normalScale: <Vector2>,\n *\n *  displacementMap: new THREE.Texture( <Image> ),\n *  displacementScale: <float>,\n *  displacementBias: <float>,\n *\n *  specularMap: new THREE.Texture( <Image> ),\n *\n *  alphaMap: new THREE.Texture( <Image> ),\n *\n *  envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),\n *  combine: THREE.MultiplyOperation,\n *  reflectivity: <float>,\n *  refractionRatio: <float>,\n *\n *  wireframe: <boolean>,\n *  wireframeLinewidth: <float>,\n *\n *  skinning: <bool>,\n *  morphTargets: <bool>,\n *  morphNormals: <bool>\n * }\n */\n\nfunction MeshPhongMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.type = 'MeshPhongMaterial';\n\n\tthis.color = new Color( 0xffffff ); // diffuse\n\tthis.specular = new Color( 0x111111 );\n\tthis.shininess = 30;\n\n\tthis.map = null;\n\n\tthis.lightMap = null;\n\tthis.lightMapIntensity = 1.0;\n\n\tthis.aoMap = null;\n\tthis.aoMapIntensity = 1.0;\n\n\tthis.emissive = new Color( 0x000000 );\n\tthis.emissiveIntensity = 1.0;\n\tthis.emissiveMap = null;\n\n\tthis.bumpMap = null;\n\tthis.bumpScale = 1;\n\n\tthis.normalMap = null;\n\tthis.normalMapType = TangentSpaceNormalMap;\n\tthis.normalScale = new Vector2( 1, 1 );\n\n\tthis.displacementMap = null;\n\tthis.displacementScale = 1;\n\tthis.displacementBias = 0;\n\n\tthis.specularMap = null;\n\n\tthis.alphaMap = null;\n\n\tthis.envMap = null;\n\tthis.combine = MultiplyOperation;\n\tthis.reflectivity = 1;\n\tthis.refractionRatio = 0.98;\n\n\tthis.wireframe = false;\n\tthis.wireframeLinewidth = 1;\n\tthis.wireframeLinecap = 'round';\n\tthis.wireframeLinejoin = 'round';\n\n\tthis.skinning = false;\n\tthis.morphTargets = false;\n\tthis.morphNormals = false;\n\n\tthis.setValues( parameters );\n\n}\n\nMeshPhongMaterial.prototype = Object.create( Material.prototype );\nMeshPhongMaterial.prototype.constructor = MeshPhongMaterial;\n\nMeshPhongMaterial.prototype.isMeshPhongMaterial = true;\n\nMeshPhongMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.color.copy( source.color );\n\tthis.specular.copy( source.specular );\n\tthis.shininess = source.shininess;\n\n\tthis.map = source.map;\n\n\tthis.lightMap = source.lightMap;\n\tthis.lightMapIntensity = source.lightMapIntensity;\n\n\tthis.aoMap = source.aoMap;\n\tthis.aoMapIntensity = source.aoMapIntensity;\n\n\tthis.emissive.copy( source.emissive );\n\tthis.emissiveMap = source.emissiveMap;\n\tthis.emissiveIntensity = source.emissiveIntensity;\n\n\tthis.bumpMap = source.bumpMap;\n\tthis.bumpScale = source.bumpScale;\n\n\tthis.normalMap = source.normalMap;\n\tthis.normalMapType = source.normalMapType;\n\tthis.normalScale.copy( source.normalScale );\n\n\tthis.displacementMap = source.displacementMap;\n\tthis.displacementScale = source.displacementScale;\n\tthis.displacementBias = source.displacementBias;\n\n\tthis.specularMap = source.specularMap;\n\n\tthis.alphaMap = source.alphaMap;\n\n\tthis.envMap = source.envMap;\n\tthis.combine = source.combine;\n\tthis.reflectivity = source.reflectivity;\n\tthis.refractionRatio = source.refractionRatio;\n\n\tthis.wireframe = source.wireframe;\n\tthis.wireframeLinewidth = source.wireframeLinewidth;\n\tthis.wireframeLinecap = source.wireframeLinecap;\n\tthis.wireframeLinejoin = source.wireframeLinejoin;\n\n\tthis.skinning = source.skinning;\n\tthis.morphTargets = source.morphTargets;\n\tthis.morphNormals = source.morphNormals;\n\n\treturn this;\n\n};\n\n/**\n * parameters = {\n *  color: <hex>,\n *\n *  map: new THREE.Texture( <Image> ),\n *  gradientMap: new THREE.Texture( <Image> ),\n *\n *  lightMap: new THREE.Texture( <Image> ),\n *  lightMapIntensity: <float>\n *\n *  aoMap: new THREE.Texture( <Image> ),\n *  aoMapIntensity: <float>\n *\n *  emissive: <hex>,\n *  emissiveIntensity: <float>\n *  emissiveMap: new THREE.Texture( <Image> ),\n *\n *  bumpMap: new THREE.Texture( <Image> ),\n *  bumpScale: <float>,\n *\n *  normalMap: new THREE.Texture( <Image> ),\n *  normalMapType: THREE.TangentSpaceNormalMap,\n *  normalScale: <Vector2>,\n *\n *  displacementMap: new THREE.Texture( <Image> ),\n *  displacementScale: <float>,\n *  displacementBias: <float>,\n *\n *  alphaMap: new THREE.Texture( <Image> ),\n *\n *  wireframe: <boolean>,\n *  wireframeLinewidth: <float>,\n *\n *  skinning: <bool>,\n *  morphTargets: <bool>,\n *  morphNormals: <bool>\n * }\n */\n\nfunction MeshToonMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.defines = { 'TOON': '' };\n\n\tthis.type = 'MeshToonMaterial';\n\n\tthis.color = new Color( 0xffffff );\n\n\tthis.map = null;\n\tthis.gradientMap = null;\n\n\tthis.lightMap = null;\n\tthis.lightMapIntensity = 1.0;\n\n\tthis.aoMap = null;\n\tthis.aoMapIntensity = 1.0;\n\n\tthis.emissive = new Color( 0x000000 );\n\tthis.emissiveIntensity = 1.0;\n\tthis.emissiveMap = null;\n\n\tthis.bumpMap = null;\n\tthis.bumpScale = 1;\n\n\tthis.normalMap = null;\n\tthis.normalMapType = TangentSpaceNormalMap;\n\tthis.normalScale = new Vector2( 1, 1 );\n\n\tthis.displacementMap = null;\n\tthis.displacementScale = 1;\n\tthis.displacementBias = 0;\n\n\tthis.alphaMap = null;\n\n\tthis.wireframe = false;\n\tthis.wireframeLinewidth = 1;\n\tthis.wireframeLinecap = 'round';\n\tthis.wireframeLinejoin = 'round';\n\n\tthis.skinning = false;\n\tthis.morphTargets = false;\n\tthis.morphNormals = false;\n\n\tthis.setValues( parameters );\n\n}\n\nMeshToonMaterial.prototype = Object.create( Material.prototype );\nMeshToonMaterial.prototype.constructor = MeshToonMaterial;\n\nMeshToonMaterial.prototype.isMeshToonMaterial = true;\n\nMeshToonMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.color.copy( source.color );\n\n\tthis.map = source.map;\n\tthis.gradientMap = source.gradientMap;\n\n\tthis.lightMap = source.lightMap;\n\tthis.lightMapIntensity = source.lightMapIntensity;\n\n\tthis.aoMap = source.aoMap;\n\tthis.aoMapIntensity = source.aoMapIntensity;\n\n\tthis.emissive.copy( source.emissive );\n\tthis.emissiveMap = source.emissiveMap;\n\tthis.emissiveIntensity = source.emissiveIntensity;\n\n\tthis.bumpMap = source.bumpMap;\n\tthis.bumpScale = source.bumpScale;\n\n\tthis.normalMap = source.normalMap;\n\tthis.normalMapType = source.normalMapType;\n\tthis.normalScale.copy( source.normalScale );\n\n\tthis.displacementMap = source.displacementMap;\n\tthis.displacementScale = source.displacementScale;\n\tthis.displacementBias = source.displacementBias;\n\n\tthis.alphaMap = source.alphaMap;\n\n\tthis.wireframe = source.wireframe;\n\tthis.wireframeLinewidth = source.wireframeLinewidth;\n\tthis.wireframeLinecap = source.wireframeLinecap;\n\tthis.wireframeLinejoin = source.wireframeLinejoin;\n\n\tthis.skinning = source.skinning;\n\tthis.morphTargets = source.morphTargets;\n\tthis.morphNormals = source.morphNormals;\n\n\treturn this;\n\n};\n\n/**\n * parameters = {\n *  opacity: <float>,\n *\n *  bumpMap: new THREE.Texture( <Image> ),\n *  bumpScale: <float>,\n *\n *  normalMap: new THREE.Texture( <Image> ),\n *  normalMapType: THREE.TangentSpaceNormalMap,\n *  normalScale: <Vector2>,\n *\n *  displacementMap: new THREE.Texture( <Image> ),\n *  displacementScale: <float>,\n *  displacementBias: <float>,\n *\n *  wireframe: <boolean>,\n *  wireframeLinewidth: <float>\n *\n *  skinning: <bool>,\n *  morphTargets: <bool>,\n *  morphNormals: <bool>\n * }\n */\n\nfunction MeshNormalMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.type = 'MeshNormalMaterial';\n\n\tthis.bumpMap = null;\n\tthis.bumpScale = 1;\n\n\tthis.normalMap = null;\n\tthis.normalMapType = TangentSpaceNormalMap;\n\tthis.normalScale = new Vector2( 1, 1 );\n\n\tthis.displacementMap = null;\n\tthis.displacementScale = 1;\n\tthis.displacementBias = 0;\n\n\tthis.wireframe = false;\n\tthis.wireframeLinewidth = 1;\n\n\tthis.fog = false;\n\n\tthis.skinning = false;\n\tthis.morphTargets = false;\n\tthis.morphNormals = false;\n\n\tthis.setValues( parameters );\n\n}\n\nMeshNormalMaterial.prototype = Object.create( Material.prototype );\nMeshNormalMaterial.prototype.constructor = MeshNormalMaterial;\n\nMeshNormalMaterial.prototype.isMeshNormalMaterial = true;\n\nMeshNormalMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.bumpMap = source.bumpMap;\n\tthis.bumpScale = source.bumpScale;\n\n\tthis.normalMap = source.normalMap;\n\tthis.normalMapType = source.normalMapType;\n\tthis.normalScale.copy( source.normalScale );\n\n\tthis.displacementMap = source.displacementMap;\n\tthis.displacementScale = source.displacementScale;\n\tthis.displacementBias = source.displacementBias;\n\n\tthis.wireframe = source.wireframe;\n\tthis.wireframeLinewidth = source.wireframeLinewidth;\n\n\tthis.skinning = source.skinning;\n\tthis.morphTargets = source.morphTargets;\n\tthis.morphNormals = source.morphNormals;\n\n\treturn this;\n\n};\n\n/**\n * parameters = {\n *  color: <hex>,\n *  opacity: <float>,\n *\n *  map: new THREE.Texture( <Image> ),\n *\n *  lightMap: new THREE.Texture( <Image> ),\n *  lightMapIntensity: <float>\n *\n *  aoMap: new THREE.Texture( <Image> ),\n *  aoMapIntensity: <float>\n *\n *  emissive: <hex>,\n *  emissiveIntensity: <float>\n *  emissiveMap: new THREE.Texture( <Image> ),\n *\n *  specularMap: new THREE.Texture( <Image> ),\n *\n *  alphaMap: new THREE.Texture( <Image> ),\n *\n *  envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),\n *  combine: THREE.Multiply,\n *  reflectivity: <float>,\n *  refractionRatio: <float>,\n *\n *  wireframe: <boolean>,\n *  wireframeLinewidth: <float>,\n *\n *  skinning: <bool>,\n *  morphTargets: <bool>,\n *  morphNormals: <bool>\n * }\n */\n\nfunction MeshLambertMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.type = 'MeshLambertMaterial';\n\n\tthis.color = new Color( 0xffffff ); // diffuse\n\n\tthis.map = null;\n\n\tthis.lightMap = null;\n\tthis.lightMapIntensity = 1.0;\n\n\tthis.aoMap = null;\n\tthis.aoMapIntensity = 1.0;\n\n\tthis.emissive = new Color( 0x000000 );\n\tthis.emissiveIntensity = 1.0;\n\tthis.emissiveMap = null;\n\n\tthis.specularMap = null;\n\n\tthis.alphaMap = null;\n\n\tthis.envMap = null;\n\tthis.combine = MultiplyOperation;\n\tthis.reflectivity = 1;\n\tthis.refractionRatio = 0.98;\n\n\tthis.wireframe = false;\n\tthis.wireframeLinewidth = 1;\n\tthis.wireframeLinecap = 'round';\n\tthis.wireframeLinejoin = 'round';\n\n\tthis.skinning = false;\n\tthis.morphTargets = false;\n\tthis.morphNormals = false;\n\n\tthis.setValues( parameters );\n\n}\n\nMeshLambertMaterial.prototype = Object.create( Material.prototype );\nMeshLambertMaterial.prototype.constructor = MeshLambertMaterial;\n\nMeshLambertMaterial.prototype.isMeshLambertMaterial = true;\n\nMeshLambertMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.color.copy( source.color );\n\n\tthis.map = source.map;\n\n\tthis.lightMap = source.lightMap;\n\tthis.lightMapIntensity = source.lightMapIntensity;\n\n\tthis.aoMap = source.aoMap;\n\tthis.aoMapIntensity = source.aoMapIntensity;\n\n\tthis.emissive.copy( source.emissive );\n\tthis.emissiveMap = source.emissiveMap;\n\tthis.emissiveIntensity = source.emissiveIntensity;\n\n\tthis.specularMap = source.specularMap;\n\n\tthis.alphaMap = source.alphaMap;\n\n\tthis.envMap = source.envMap;\n\tthis.combine = source.combine;\n\tthis.reflectivity = source.reflectivity;\n\tthis.refractionRatio = source.refractionRatio;\n\n\tthis.wireframe = source.wireframe;\n\tthis.wireframeLinewidth = source.wireframeLinewidth;\n\tthis.wireframeLinecap = source.wireframeLinecap;\n\tthis.wireframeLinejoin = source.wireframeLinejoin;\n\n\tthis.skinning = source.skinning;\n\tthis.morphTargets = source.morphTargets;\n\tthis.morphNormals = source.morphNormals;\n\n\treturn this;\n\n};\n\n/**\n * parameters = {\n *  color: <hex>,\n *  opacity: <float>,\n *\n *  matcap: new THREE.Texture( <Image> ),\n *\n *  map: new THREE.Texture( <Image> ),\n *\n *  bumpMap: new THREE.Texture( <Image> ),\n *  bumpScale: <float>,\n *\n *  normalMap: new THREE.Texture( <Image> ),\n *  normalMapType: THREE.TangentSpaceNormalMap,\n *  normalScale: <Vector2>,\n *\n *  displacementMap: new THREE.Texture( <Image> ),\n *  displacementScale: <float>,\n *  displacementBias: <float>,\n *\n *  alphaMap: new THREE.Texture( <Image> ),\n *\n *  skinning: <bool>,\n *  morphTargets: <bool>,\n *  morphNormals: <bool>\n * }\n */\n\nfunction MeshMatcapMaterial( parameters ) {\n\n\tMaterial.call( this );\n\n\tthis.defines = { 'MATCAP': '' };\n\n\tthis.type = 'MeshMatcapMaterial';\n\n\tthis.color = new Color( 0xffffff ); // diffuse\n\n\tthis.matcap = null;\n\n\tthis.map = null;\n\n\tthis.bumpMap = null;\n\tthis.bumpScale = 1;\n\n\tthis.normalMap = null;\n\tthis.normalMapType = TangentSpaceNormalMap;\n\tthis.normalScale = new Vector2( 1, 1 );\n\n\tthis.displacementMap = null;\n\tthis.displacementScale = 1;\n\tthis.displacementBias = 0;\n\n\tthis.alphaMap = null;\n\n\tthis.skinning = false;\n\tthis.morphTargets = false;\n\tthis.morphNormals = false;\n\n\tthis.setValues( parameters );\n\n}\n\nMeshMatcapMaterial.prototype = Object.create( Material.prototype );\nMeshMatcapMaterial.prototype.constructor = MeshMatcapMaterial;\n\nMeshMatcapMaterial.prototype.isMeshMatcapMaterial = true;\n\nMeshMatcapMaterial.prototype.copy = function ( source ) {\n\n\tMaterial.prototype.copy.call( this, source );\n\n\tthis.defines = { 'MATCAP': '' };\n\n\tthis.color.copy( source.color );\n\n\tthis.matcap = source.matcap;\n\n\tthis.map = source.map;\n\n\tthis.bumpMap = source.bumpMap;\n\tthis.bumpScale = source.bumpScale;\n\n\tthis.normalMap = source.normalMap;\n\tthis.normalMapType = source.normalMapType;\n\tthis.normalScale.copy( source.normalScale );\n\n\tthis.displacementMap = source.displacementMap;\n\tthis.displacementScale = source.displacementScale;\n\tthis.displacementBias = source.displacementBias;\n\n\tthis.alphaMap = source.alphaMap;\n\n\tthis.skinning = source.skinning;\n\tthis.morphTargets = source.morphTargets;\n\tthis.morphNormals = source.morphNormals;\n\n\treturn this;\n\n};\n\n/**\n * parameters = {\n *  color: <hex>,\n *  opacity: <float>,\n *\n *  linewidth: <float>,\n *\n *  scale: <float>,\n *  dashSize: <float>,\n *  gapSize: <float>\n * }\n */\n\nfunction LineDashedMaterial( parameters ) {\n\n\tLineBasicMaterial.call( this );\n\n\tthis.type = 'LineDashedMaterial';\n\n\tthis.scale = 1;\n\tthis.dashSize = 3;\n\tthis.gapSize = 1;\n\n\tthis.setValues( parameters );\n\n}\n\nLineDashedMaterial.prototype = Object.create( LineBasicMaterial.prototype );\nLineDashedMaterial.prototype.constructor = LineDashedMaterial;\n\nLineDashedMaterial.prototype.isLineDashedMaterial = true;\n\nLineDashedMaterial.prototype.copy = function ( source ) {\n\n\tLineBasicMaterial.prototype.copy.call( this, source );\n\n\tthis.scale = source.scale;\n\tthis.dashSize = source.dashSize;\n\tthis.gapSize = source.gapSize;\n\n\treturn this;\n\n};\n\nvar Materials = /*#__PURE__*/Object.freeze({\n\t__proto__: null,\n\tShadowMaterial: ShadowMaterial,\n\tSpriteMaterial: SpriteMaterial,\n\tRawShaderMaterial: RawShaderMaterial,\n\tShaderMaterial: ShaderMaterial,\n\tPointsMaterial: PointsMaterial,\n\tMeshPhysicalMaterial: MeshPhysicalMaterial,\n\tMeshStandardMaterial: MeshStandardMaterial,\n\tMeshPhongMaterial: MeshPhongMaterial,\n\tMeshToonMaterial: MeshToonMaterial,\n\tMeshNormalMaterial: MeshNormalMaterial,\n\tMeshLambertMaterial: MeshLambertMaterial,\n\tMeshDepthMaterial: MeshDepthMaterial,\n\tMeshDistanceMaterial: MeshDistanceMaterial,\n\tMeshBasicMaterial: MeshBasicMaterial,\n\tMeshMatcapMaterial: MeshMatcapMaterial,\n\tLineDashedMaterial: LineDashedMaterial,\n\tLineBasicMaterial: LineBasicMaterial,\n\tMaterial: Material\n});\n\nconst AnimationUtils = {\n\n\t// same as Array.prototype.slice, but also works on typed arrays\n\tarraySlice: function ( array, from, to ) {\n\n\t\tif ( AnimationUtils.isTypedArray( array ) ) {\n\n\t\t\t// in ios9 array.subarray(from, undefined) will return empty array\n\t\t\t// but array.subarray(from) or array.subarray(from, len) is correct\n\t\t\treturn new array.constructor( array.subarray( from, to !== undefined ? to : array.length ) );\n\n\t\t}\n\n\t\treturn array.slice( from, to );\n\n\t},\n\n\t// converts an array to a specific type\n\tconvertArray: function ( array, type, forceClone ) {\n\n\t\tif ( ! array || // let 'undefined' and 'null' pass\n\t\t\t! forceClone && array.constructor === type ) return array;\n\n\t\tif ( typeof type.BYTES_PER_ELEMENT === 'number' ) {\n\n\t\t\treturn new type( array ); // create typed array\n\n\t\t}\n\n\t\treturn Array.prototype.slice.call( array ); // create Array\n\n\t},\n\n\tisTypedArray: function ( object ) {\n\n\t\treturn ArrayBuffer.isView( object ) &&\n\t\t\t! ( object instanceof DataView );\n\n\t},\n\n\t// returns an array by which times and values can be sorted\n\tgetKeyframeOrder: function ( times ) {\n\n\t\tfunction compareTime( i, j ) {\n\n\t\t\treturn times[ i ] - times[ j ];\n\n\t\t}\n\n\t\tconst n = times.length;\n\t\tconst result = new Array( n );\n\t\tfor ( let i = 0; i !== n; ++ i ) result[ i ] = i;\n\n\t\tresult.sort( compareTime );\n\n\t\treturn result;\n\n\t},\n\n\t// uses the array previously returned by 'getKeyframeOrder' to sort data\n\tsortedArray: function ( values, stride, order ) {\n\n\t\tconst nValues = values.length;\n\t\tconst result = new values.constructor( nValues );\n\n\t\tfor ( let i = 0, dstOffset = 0; dstOffset !== nValues; ++ i ) {\n\n\t\t\tconst srcOffset = order[ i ] * stride;\n\n\t\t\tfor ( let j = 0; j !== stride; ++ j ) {\n\n\t\t\t\tresult[ dstOffset ++ ] = values[ srcOffset + j ];\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn result;\n\n\t},\n\n\t// function for parsing AOS keyframe formats\n\tflattenJSON: function ( jsonKeys, times, values, valuePropertyName ) {\n\n\t\tlet i = 1, key = jsonKeys[ 0 ];\n\n\t\twhile ( key !== undefined && key[ valuePropertyName ] === undefined ) {\n\n\t\t\tkey = jsonKeys[ i ++ ];\n\n\t\t}\n\n\t\tif ( key === undefined ) return; // no data\n\n\t\tlet value = key[ valuePropertyName ];\n\t\tif ( value === undefined ) return; // no data\n\n\t\tif ( Array.isArray( value ) ) {\n\n\t\t\tdo {\n\n\t\t\t\tvalue = key[ valuePropertyName ];\n\n\t\t\t\tif ( value !== undefined ) {\n\n\t\t\t\t\ttimes.push( key.time );\n\t\t\t\t\tvalues.push.apply( values, value ); // push all elements\n\n\t\t\t\t}\n\n\t\t\t\tkey = jsonKeys[ i ++ ];\n\n\t\t\t} while ( key !== undefined );\n\n\t\t} else if ( value.toArray !== undefined ) {\n\n\t\t\t// ...assume THREE.Math-ish\n\n\t\t\tdo {\n\n\t\t\t\tvalue = key[ valuePropertyName ];\n\n\t\t\t\tif ( value !== undefined ) {\n\n\t\t\t\t\ttimes.push( key.time );\n\t\t\t\t\tvalue.toArray( values, values.length );\n\n\t\t\t\t}\n\n\t\t\t\tkey = jsonKeys[ i ++ ];\n\n\t\t\t} while ( key !== undefined );\n\n\t\t} else {\n\n\t\t\t// otherwise push as-is\n\n\t\t\tdo {\n\n\t\t\t\tvalue = key[ valuePropertyName ];\n\n\t\t\t\tif ( value !== undefined ) {\n\n\t\t\t\t\ttimes.push( key.time );\n\t\t\t\t\tvalues.push( value );\n\n\t\t\t\t}\n\n\t\t\t\tkey = jsonKeys[ i ++ ];\n\n\t\t\t} while ( key !== undefined );\n\n\t\t}\n\n\t},\n\n\tsubclip: function ( sourceClip, name, startFrame, endFrame, fps = 30 ) {\n\n\t\tconst clip = sourceClip.clone();\n\n\t\tclip.name = name;\n\n\t\tconst tracks = [];\n\n\t\tfor ( let i = 0; i < clip.tracks.length; ++ i ) {\n\n\t\t\tconst track = clip.tracks[ i ];\n\t\t\tconst valueSize = track.getValueSize();\n\n\t\t\tconst times = [];\n\t\t\tconst values = [];\n\n\t\t\tfor ( let j = 0; j < track.times.length; ++ j ) {\n\n\t\t\t\tconst frame = track.times[ j ] * fps;\n\n\t\t\t\tif ( frame < startFrame || frame >= endFrame ) continue;\n\n\t\t\t\ttimes.push( track.times[ j ] );\n\n\t\t\t\tfor ( let k = 0; k < valueSize; ++ k ) {\n\n\t\t\t\t\tvalues.push( track.values[ j * valueSize + k ] );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( times.length === 0 ) continue;\n\n\t\t\ttrack.times = AnimationUtils.convertArray( times, track.times.constructor );\n\t\t\ttrack.values = AnimationUtils.convertArray( values, track.values.constructor );\n\n\t\t\ttracks.push( track );\n\n\t\t}\n\n\t\tclip.tracks = tracks;\n\n\t\t// find minimum .times value across all tracks in the trimmed clip\n\n\t\tlet minStartTime = Infinity;\n\n\t\tfor ( let i = 0; i < clip.tracks.length; ++ i ) {\n\n\t\t\tif ( minStartTime > clip.tracks[ i ].times[ 0 ] ) {\n\n\t\t\t\tminStartTime = clip.tracks[ i ].times[ 0 ];\n\n\t\t\t}\n\n\t\t}\n\n\t\t// shift all tracks such that clip begins at t=0\n\n\t\tfor ( let i = 0; i < clip.tracks.length; ++ i ) {\n\n\t\t\tclip.tracks[ i ].shift( - 1 * minStartTime );\n\n\t\t}\n\n\t\tclip.resetDuration();\n\n\t\treturn clip;\n\n\t},\n\n\tmakeClipAdditive: function ( targetClip, referenceFrame = 0, referenceClip = targetClip, fps = 30 ) {\n\n\t\tif ( fps <= 0 ) fps = 30;\n\n\t\tconst numTracks = referenceClip.tracks.length;\n\t\tconst referenceTime = referenceFrame / fps;\n\n\t\t// Make each track's values relative to the values at the reference frame\n\t\tfor ( let i = 0; i < numTracks; ++ i ) {\n\n\t\t\tconst referenceTrack = referenceClip.tracks[ i ];\n\t\t\tconst referenceTrackType = referenceTrack.ValueTypeName;\n\n\t\t\t// Skip this track if it's non-numeric\n\t\t\tif ( referenceTrackType === 'bool' || referenceTrackType === 'string' ) continue;\n\n\t\t\t// Find the track in the target clip whose name and type matches the reference track\n\t\t\tconst targetTrack = targetClip.tracks.find( function ( track ) {\n\n\t\t\t\treturn track.name === referenceTrack.name\n\t\t\t\t\t&& track.ValueTypeName === referenceTrackType;\n\n\t\t\t} );\n\n\t\t\tif ( targetTrack === undefined ) continue;\n\n\t\t\tlet referenceOffset = 0;\n\t\t\tconst referenceValueSize = referenceTrack.getValueSize();\n\n\t\t\tif ( referenceTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline ) {\n\n\t\t\t\treferenceOffset = referenceValueSize / 3;\n\n\t\t\t}\n\n\t\t\tlet targetOffset = 0;\n\t\t\tconst targetValueSize = targetTrack.getValueSize();\n\n\t\t\tif ( targetTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline ) {\n\n\t\t\t\ttargetOffset = targetValueSize / 3;\n\n\t\t\t}\n\n\t\t\tconst lastIndex = referenceTrack.times.length - 1;\n\t\t\tlet referenceValue;\n\n\t\t\t// Find the value to subtract out of the track\n\t\t\tif ( referenceTime <= referenceTrack.times[ 0 ] ) {\n\n\t\t\t\t// Reference frame is earlier than the first keyframe, so just use the first keyframe\n\t\t\t\tconst startIndex = referenceOffset;\n\t\t\t\tconst endIndex = referenceValueSize - referenceOffset;\n\t\t\t\treferenceValue = AnimationUtils.arraySlice( referenceTrack.values, startIndex, endIndex );\n\n\t\t\t} else if ( referenceTime >= referenceTrack.times[ lastIndex ] ) {\n\n\t\t\t\t// Reference frame is after the last keyframe, so just use the last keyframe\n\t\t\t\tconst startIndex = lastIndex * referenceValueSize + referenceOffset;\n\t\t\t\tconst endIndex = startIndex + referenceValueSize - referenceOffset;\n\t\t\t\treferenceValue = AnimationUtils.arraySlice( referenceTrack.values, startIndex, endIndex );\n\n\t\t\t} else {\n\n\t\t\t\t// Interpolate to the reference value\n\t\t\t\tconst interpolant = referenceTrack.createInterpolant();\n\t\t\t\tconst startIndex = referenceOffset;\n\t\t\t\tconst endIndex = referenceValueSize - referenceOffset;\n\t\t\t\tinterpolant.evaluate( referenceTime );\n\t\t\t\treferenceValue = AnimationUtils.arraySlice( interpolant.resultBuffer, startIndex, endIndex );\n\n\t\t\t}\n\n\t\t\t// Conjugate the quaternion\n\t\t\tif ( referenceTrackType === 'quaternion' ) {\n\n\t\t\t\tconst referenceQuat = new Quaternion().fromArray( referenceValue ).normalize().conjugate();\n\t\t\t\treferenceQuat.toArray( referenceValue );\n\n\t\t\t}\n\n\t\t\t// Subtract the reference value from all of the track values\n\n\t\t\tconst numTimes = targetTrack.times.length;\n\t\t\tfor ( let j = 0; j < numTimes; ++ j ) {\n\n\t\t\t\tconst valueStart = j * targetValueSize + targetOffset;\n\n\t\t\t\tif ( referenceTrackType === 'quaternion' ) {\n\n\t\t\t\t\t// Multiply the conjugate for quaternion track types\n\t\t\t\t\tQuaternion.multiplyQuaternionsFlat(\n\t\t\t\t\t\ttargetTrack.values,\n\t\t\t\t\t\tvalueStart,\n\t\t\t\t\t\treferenceValue,\n\t\t\t\t\t\t0,\n\t\t\t\t\t\ttargetTrack.values,\n\t\t\t\t\t\tvalueStart\n\t\t\t\t\t);\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconst valueEnd = targetValueSize - targetOffset * 2;\n\n\t\t\t\t\t// Subtract each value for all other numeric track types\n\t\t\t\t\tfor ( let k = 0; k < valueEnd; ++ k ) {\n\n\t\t\t\t\t\ttargetTrack.values[ valueStart + k ] -= referenceValue[ k ];\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\ttargetClip.blendMode = AdditiveAnimationBlendMode;\n\n\t\treturn targetClip;\n\n\t}\n\n};\n\n/**\n * Abstract base class of interpolants over parametric samples.\n *\n * The parameter domain is one dimensional, typically the time or a path\n * along a curve defined by the data.\n *\n * The sample values can have any dimensionality and derived classes may\n * apply special interpretations to the data.\n *\n * This class provides the interval seek in a Template Method, deferring\n * the actual interpolation to derived classes.\n *\n * Time complexity is O(1) for linear access crossing at most two points\n * and O(log N) for random access, where N is the number of positions.\n *\n * References:\n *\n * \t\thttp://www.oodesign.com/template-method-pattern.html\n *\n */\n\nfunction Interpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {\n\n\tthis.parameterPositions = parameterPositions;\n\tthis._cachedIndex = 0;\n\n\tthis.resultBuffer = resultBuffer !== undefined ?\n\t\tresultBuffer : new sampleValues.constructor( sampleSize );\n\tthis.sampleValues = sampleValues;\n\tthis.valueSize = sampleSize;\n\n}\n\nObject.assign( Interpolant.prototype, {\n\n\tevaluate: function ( t ) {\n\n\t\tconst pp = this.parameterPositions;\n\t\tlet i1 = this._cachedIndex,\n\t\t\tt1 = pp[ i1 ],\n\t\t\tt0 = pp[ i1 - 1 ];\n\n\t\tvalidate_interval: {\n\n\t\t\tseek: {\n\n\t\t\t\tlet right;\n\n\t\t\t\tlinear_scan: {\n\n\t\t\t\t\t//- See http://jsperf.com/comparison-to-undefined/3\n\t\t\t\t\t//- slower code:\n\t\t\t\t\t//-\n\t\t\t\t\t//- \t\t\t\tif ( t >= t1 || t1 === undefined ) {\n\t\t\t\t\tforward_scan: if ( ! ( t < t1 ) ) {\n\n\t\t\t\t\t\tfor ( let giveUpAt = i1 + 2; ; ) {\n\n\t\t\t\t\t\t\tif ( t1 === undefined ) {\n\n\t\t\t\t\t\t\t\tif ( t < t0 ) break forward_scan;\n\n\t\t\t\t\t\t\t\t// after end\n\n\t\t\t\t\t\t\t\ti1 = pp.length;\n\t\t\t\t\t\t\t\tthis._cachedIndex = i1;\n\t\t\t\t\t\t\t\treturn this.afterEnd_( i1 - 1, t, t0 );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tif ( i1 === giveUpAt ) break; // this loop\n\n\t\t\t\t\t\t\tt0 = t1;\n\t\t\t\t\t\t\tt1 = pp[ ++ i1 ];\n\n\t\t\t\t\t\t\tif ( t < t1 ) {\n\n\t\t\t\t\t\t\t\t// we have arrived at the sought interval\n\t\t\t\t\t\t\t\tbreak seek;\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// prepare binary search on the right side of the index\n\t\t\t\t\t\tright = pp.length;\n\t\t\t\t\t\tbreak linear_scan;\n\n\t\t\t\t\t}\n\n\t\t\t\t\t//- slower code:\n\t\t\t\t\t//-\t\t\t\t\tif ( t < t0 || t0 === undefined ) {\n\t\t\t\t\tif ( ! ( t >= t0 ) ) {\n\n\t\t\t\t\t\t// looping?\n\n\t\t\t\t\t\tconst t1global = pp[ 1 ];\n\n\t\t\t\t\t\tif ( t < t1global ) {\n\n\t\t\t\t\t\t\ti1 = 2; // + 1, using the scan for the details\n\t\t\t\t\t\t\tt0 = t1global;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// linear reverse scan\n\n\t\t\t\t\t\tfor ( let giveUpAt = i1 - 2; ; ) {\n\n\t\t\t\t\t\t\tif ( t0 === undefined ) {\n\n\t\t\t\t\t\t\t\t// before start\n\n\t\t\t\t\t\t\t\tthis._cachedIndex = 0;\n\t\t\t\t\t\t\t\treturn this.beforeStart_( 0, t, t1 );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tif ( i1 === giveUpAt ) break; // this loop\n\n\t\t\t\t\t\t\tt1 = t0;\n\t\t\t\t\t\t\tt0 = pp[ -- i1 - 1 ];\n\n\t\t\t\t\t\t\tif ( t >= t0 ) {\n\n\t\t\t\t\t\t\t\t// we have arrived at the sought interval\n\t\t\t\t\t\t\t\tbreak seek;\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// prepare binary search on the left side of the index\n\t\t\t\t\t\tright = i1;\n\t\t\t\t\t\ti1 = 0;\n\t\t\t\t\t\tbreak linear_scan;\n\n\t\t\t\t\t}\n\n\t\t\t\t\t// the interval is valid\n\n\t\t\t\t\tbreak validate_interval;\n\n\t\t\t\t} // linear scan\n\n\t\t\t\t// binary search\n\n\t\t\t\twhile ( i1 < right ) {\n\n\t\t\t\t\tconst mid = ( i1 + right ) >>> 1;\n\n\t\t\t\t\tif ( t < pp[ mid ] ) {\n\n\t\t\t\t\t\tright = mid;\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\ti1 = mid + 1;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tt1 = pp[ i1 ];\n\t\t\t\tt0 = pp[ i1 - 1 ];\n\n\t\t\t\t// check boundary cases, again\n\n\t\t\t\tif ( t0 === undefined ) {\n\n\t\t\t\t\tthis._cachedIndex = 0;\n\t\t\t\t\treturn this.beforeStart_( 0, t, t1 );\n\n\t\t\t\t}\n\n\t\t\t\tif ( t1 === undefined ) {\n\n\t\t\t\t\ti1 = pp.length;\n\t\t\t\t\tthis._cachedIndex = i1;\n\t\t\t\t\treturn this.afterEnd_( i1 - 1, t0, t );\n\n\t\t\t\t}\n\n\t\t\t} // seek\n\n\t\t\tthis._cachedIndex = i1;\n\n\t\t\tthis.intervalChanged_( i1, t0, t1 );\n\n\t\t} // validate_interval\n\n\t\treturn this.interpolate_( i1, t0, t, t1 );\n\n\t},\n\n\tsettings: null, // optional, subclass-specific settings structure\n\t// Note: The indirection allows central control of many interpolants.\n\n\t// --- Protected interface\n\n\tDefaultSettings_: {},\n\n\tgetSettings_: function () {\n\n\t\treturn this.settings || this.DefaultSettings_;\n\n\t},\n\n\tcopySampleValue_: function ( index ) {\n\n\t\t// copies a sample value to the result buffer\n\n\t\tconst result = this.resultBuffer,\n\t\t\tvalues = this.sampleValues,\n\t\t\tstride = this.valueSize,\n\t\t\toffset = index * stride;\n\n\t\tfor ( let i = 0; i !== stride; ++ i ) {\n\n\t\t\tresult[ i ] = values[ offset + i ];\n\n\t\t}\n\n\t\treturn result;\n\n\t},\n\n\t// Template methods for derived classes:\n\n\tinterpolate_: function ( /* i1, t0, t, t1 */ ) {\n\n\t\tthrow new Error( 'call to abstract method' );\n\t\t// implementations shall return this.resultBuffer\n\n\t},\n\n\tintervalChanged_: function ( /* i1, t0, t1 */ ) {\n\n\t\t// empty\n\n\t}\n\n} );\n\n// DECLARE ALIAS AFTER assign prototype\nObject.assign( Interpolant.prototype, {\n\n\t//( 0, t, t0 ), returns this.resultBuffer\n\tbeforeStart_: Interpolant.prototype.copySampleValue_,\n\n\t//( N-1, tN-1, t ), returns this.resultBuffer\n\tafterEnd_: Interpolant.prototype.copySampleValue_,\n\n} );\n\n/**\n * Fast and simple cubic spline interpolant.\n *\n * It was derived from a Hermitian construction setting the first derivative\n * at each sample position to the linear slope between neighboring positions\n * over their parameter interval.\n */\n\nfunction CubicInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {\n\n\tInterpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );\n\n\tthis._weightPrev = - 0;\n\tthis._offsetPrev = - 0;\n\tthis._weightNext = - 0;\n\tthis._offsetNext = - 0;\n\n}\n\nCubicInterpolant.prototype = Object.assign( Object.create( Interpolant.prototype ), {\n\n\tconstructor: CubicInterpolant,\n\n\tDefaultSettings_: {\n\n\t\tendingStart: ZeroCurvatureEnding,\n\t\tendingEnd: ZeroCurvatureEnding\n\n\t},\n\n\tintervalChanged_: function ( i1, t0, t1 ) {\n\n\t\tconst pp = this.parameterPositions;\n\t\tlet iPrev = i1 - 2,\n\t\t\tiNext = i1 + 1,\n\n\t\t\ttPrev = pp[ iPrev ],\n\t\t\ttNext = pp[ iNext ];\n\n\t\tif ( tPrev === undefined ) {\n\n\t\t\tswitch ( this.getSettings_().endingStart ) {\n\n\t\t\t\tcase ZeroSlopeEnding:\n\n\t\t\t\t\t// f'(t0) = 0\n\t\t\t\t\tiPrev = i1;\n\t\t\t\t\ttPrev = 2 * t0 - t1;\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase WrapAroundEnding:\n\n\t\t\t\t\t// use the other end of the curve\n\t\t\t\t\tiPrev = pp.length - 2;\n\t\t\t\t\ttPrev = t0 + pp[ iPrev ] - pp[ iPrev + 1 ];\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tdefault: // ZeroCurvatureEnding\n\n\t\t\t\t\t// f''(t0) = 0 a.k.a. Natural Spline\n\t\t\t\t\tiPrev = i1;\n\t\t\t\t\ttPrev = t1;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( tNext === undefined ) {\n\n\t\t\tswitch ( this.getSettings_().endingEnd ) {\n\n\t\t\t\tcase ZeroSlopeEnding:\n\n\t\t\t\t\t// f'(tN) = 0\n\t\t\t\t\tiNext = i1;\n\t\t\t\t\ttNext = 2 * t1 - t0;\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase WrapAroundEnding:\n\n\t\t\t\t\t// use the other end of the curve\n\t\t\t\t\tiNext = 1;\n\t\t\t\t\ttNext = t1 + pp[ 1 ] - pp[ 0 ];\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tdefault: // ZeroCurvatureEnding\n\n\t\t\t\t\t// f''(tN) = 0, a.k.a. Natural Spline\n\t\t\t\t\tiNext = i1 - 1;\n\t\t\t\t\ttNext = t0;\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst halfDt = ( t1 - t0 ) * 0.5,\n\t\t\tstride = this.valueSize;\n\n\t\tthis._weightPrev = halfDt / ( t0 - tPrev );\n\t\tthis._weightNext = halfDt / ( tNext - t1 );\n\t\tthis._offsetPrev = iPrev * stride;\n\t\tthis._offsetNext = iNext * stride;\n\n\t},\n\n\tinterpolate_: function ( i1, t0, t, t1 ) {\n\n\t\tconst result = this.resultBuffer,\n\t\t\tvalues = this.sampleValues,\n\t\t\tstride = this.valueSize,\n\n\t\t\to1 = i1 * stride,\t\to0 = o1 - stride,\n\t\t\toP = this._offsetPrev, \toN = this._offsetNext,\n\t\t\twP = this._weightPrev,\twN = this._weightNext,\n\n\t\t\tp = ( t - t0 ) / ( t1 - t0 ),\n\t\t\tpp = p * p,\n\t\t\tppp = pp * p;\n\n\t\t// evaluate polynomials\n\n\t\tconst sP = - wP * ppp + 2 * wP * pp - wP * p;\n\t\tconst s0 = ( 1 + wP ) * ppp + ( - 1.5 - 2 * wP ) * pp + ( - 0.5 + wP ) * p + 1;\n\t\tconst s1 = ( - 1 - wN ) * ppp + ( 1.5 + wN ) * pp + 0.5 * p;\n\t\tconst sN = wN * ppp - wN * pp;\n\n\t\t// combine data linearly\n\n\t\tfor ( let i = 0; i !== stride; ++ i ) {\n\n\t\t\tresult[ i ] =\n\t\t\t\t\tsP * values[ oP + i ] +\n\t\t\t\t\ts0 * values[ o0 + i ] +\n\t\t\t\t\ts1 * values[ o1 + i ] +\n\t\t\t\t\tsN * values[ oN + i ];\n\n\t\t}\n\n\t\treturn result;\n\n\t}\n\n} );\n\nfunction LinearInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {\n\n\tInterpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );\n\n}\n\nLinearInterpolant.prototype = Object.assign( Object.create( Interpolant.prototype ), {\n\n\tconstructor: LinearInterpolant,\n\n\tinterpolate_: function ( i1, t0, t, t1 ) {\n\n\t\tconst result = this.resultBuffer,\n\t\t\tvalues = this.sampleValues,\n\t\t\tstride = this.valueSize,\n\n\t\t\toffset1 = i1 * stride,\n\t\t\toffset0 = offset1 - stride,\n\n\t\t\tweight1 = ( t - t0 ) / ( t1 - t0 ),\n\t\t\tweight0 = 1 - weight1;\n\n\t\tfor ( let i = 0; i !== stride; ++ i ) {\n\n\t\t\tresult[ i ] =\n\t\t\t\t\tvalues[ offset0 + i ] * weight0 +\n\t\t\t\t\tvalues[ offset1 + i ] * weight1;\n\n\t\t}\n\n\t\treturn result;\n\n\t}\n\n} );\n\n/**\n *\n * Interpolant that evaluates to the sample value at the position preceeding\n * the parameter.\n */\n\nfunction DiscreteInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {\n\n\tInterpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );\n\n}\n\nDiscreteInterpolant.prototype = Object.assign( Object.create( Interpolant.prototype ), {\n\n\tconstructor: DiscreteInterpolant,\n\n\tinterpolate_: function ( i1 /*, t0, t, t1 */ ) {\n\n\t\treturn this.copySampleValue_( i1 - 1 );\n\n\t}\n\n} );\n\nfunction KeyframeTrack( name, times, values, interpolation ) {\n\n\tif ( name === undefined ) throw new Error( 'THREE.KeyframeTrack: track name is undefined' );\n\tif ( times === undefined || times.length === 0 ) throw new Error( 'THREE.KeyframeTrack: no keyframes in track named ' + name );\n\n\tthis.name = name;\n\n\tthis.times = AnimationUtils.convertArray( times, this.TimeBufferType );\n\tthis.values = AnimationUtils.convertArray( values, this.ValueBufferType );\n\n\tthis.setInterpolation( interpolation || this.DefaultInterpolation );\n\n}\n\n// Static methods\n\nObject.assign( KeyframeTrack, {\n\n\t// Serialization (in static context, because of constructor invocation\n\t// and automatic invocation of .toJSON):\n\n\ttoJSON: function ( track ) {\n\n\t\tconst trackType = track.constructor;\n\n\t\tlet json;\n\n\t\t// derived classes can define a static toJSON method\n\t\tif ( trackType.toJSON !== undefined ) {\n\n\t\t\tjson = trackType.toJSON( track );\n\n\t\t} else {\n\n\t\t\t// by default, we assume the data can be serialized as-is\n\t\t\tjson = {\n\n\t\t\t\t'name': track.name,\n\t\t\t\t'times': AnimationUtils.convertArray( track.times, Array ),\n\t\t\t\t'values': AnimationUtils.convertArray( track.values, Array )\n\n\t\t\t};\n\n\t\t\tconst interpolation = track.getInterpolation();\n\n\t\t\tif ( interpolation !== track.DefaultInterpolation ) {\n\n\t\t\t\tjson.interpolation = interpolation;\n\n\t\t\t}\n\n\t\t}\n\n\t\tjson.type = track.ValueTypeName; // mandatory\n\n\t\treturn json;\n\n\t}\n\n} );\n\nObject.assign( KeyframeTrack.prototype, {\n\n\tconstructor: KeyframeTrack,\n\n\tTimeBufferType: Float32Array,\n\n\tValueBufferType: Float32Array,\n\n\tDefaultInterpolation: InterpolateLinear,\n\n\tInterpolantFactoryMethodDiscrete: function ( result ) {\n\n\t\treturn new DiscreteInterpolant( this.times, this.values, this.getValueSize(), result );\n\n\t},\n\n\tInterpolantFactoryMethodLinear: function ( result ) {\n\n\t\treturn new LinearInterpolant( this.times, this.values, this.getValueSize(), result );\n\n\t},\n\n\tInterpolantFactoryMethodSmooth: function ( result ) {\n\n\t\treturn new CubicInterpolant( this.times, this.values, this.getValueSize(), result );\n\n\t},\n\n\tsetInterpolation: function ( interpolation ) {\n\n\t\tlet factoryMethod;\n\n\t\tswitch ( interpolation ) {\n\n\t\t\tcase InterpolateDiscrete:\n\n\t\t\t\tfactoryMethod = this.InterpolantFactoryMethodDiscrete;\n\n\t\t\t\tbreak;\n\n\t\t\tcase InterpolateLinear:\n\n\t\t\t\tfactoryMethod = this.InterpolantFactoryMethodLinear;\n\n\t\t\t\tbreak;\n\n\t\t\tcase InterpolateSmooth:\n\n\t\t\t\tfactoryMethod = this.InterpolantFactoryMethodSmooth;\n\n\t\t\t\tbreak;\n\n\t\t}\n\n\t\tif ( factoryMethod === undefined ) {\n\n\t\t\tconst message = 'unsupported interpolation for ' +\n\t\t\t\tthis.ValueTypeName + ' keyframe track named ' + this.name;\n\n\t\t\tif ( this.createInterpolant === undefined ) {\n\n\t\t\t\t// fall back to default, unless the default itself is messed up\n\t\t\t\tif ( interpolation !== this.DefaultInterpolation ) {\n\n\t\t\t\t\tthis.setInterpolation( this.DefaultInterpolation );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthrow new Error( message ); // fatal, in this case\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tconsole.warn( 'THREE.KeyframeTrack:', message );\n\t\t\treturn this;\n\n\t\t}\n\n\t\tthis.createInterpolant = factoryMethod;\n\n\t\treturn this;\n\n\t},\n\n\tgetInterpolation: function () {\n\n\t\tswitch ( this.createInterpolant ) {\n\n\t\t\tcase this.InterpolantFactoryMethodDiscrete:\n\n\t\t\t\treturn InterpolateDiscrete;\n\n\t\t\tcase this.InterpolantFactoryMethodLinear:\n\n\t\t\t\treturn InterpolateLinear;\n\n\t\t\tcase this.InterpolantFactoryMethodSmooth:\n\n\t\t\t\treturn InterpolateSmooth;\n\n\t\t}\n\n\t},\n\n\tgetValueSize: function () {\n\n\t\treturn this.values.length / this.times.length;\n\n\t},\n\n\t// move all keyframes either forwards or backwards in time\n\tshift: function ( timeOffset ) {\n\n\t\tif ( timeOffset !== 0.0 ) {\n\n\t\t\tconst times = this.times;\n\n\t\t\tfor ( let i = 0, n = times.length; i !== n; ++ i ) {\n\n\t\t\t\ttimes[ i ] += timeOffset;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\t// scale all keyframe times by a factor (useful for frame <-> seconds conversions)\n\tscale: function ( timeScale ) {\n\n\t\tif ( timeScale !== 1.0 ) {\n\n\t\t\tconst times = this.times;\n\n\t\t\tfor ( let i = 0, n = times.length; i !== n; ++ i ) {\n\n\t\t\t\ttimes[ i ] *= timeScale;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\t// removes keyframes before and after animation without changing any values within the range [startTime, endTime].\n\t// IMPORTANT: We do not shift around keys to the start of the track time, because for interpolated keys this will change their values\n\ttrim: function ( startTime, endTime ) {\n\n\t\tconst times = this.times,\n\t\t\tnKeys = times.length;\n\n\t\tlet from = 0,\n\t\t\tto = nKeys - 1;\n\n\t\twhile ( from !== nKeys && times[ from ] < startTime ) {\n\n\t\t\t++ from;\n\n\t\t}\n\n\t\twhile ( to !== - 1 && times[ to ] > endTime ) {\n\n\t\t\t-- to;\n\n\t\t}\n\n\t\t++ to; // inclusive -> exclusive bound\n\n\t\tif ( from !== 0 || to !== nKeys ) {\n\n\t\t\t// empty tracks are forbidden, so keep at least one keyframe\n\t\t\tif ( from >= to ) {\n\n\t\t\t\tto = Math.max( to, 1 );\n\t\t\t\tfrom = to - 1;\n\n\t\t\t}\n\n\t\t\tconst stride = this.getValueSize();\n\t\t\tthis.times = AnimationUtils.arraySlice( times, from, to );\n\t\t\tthis.values = AnimationUtils.arraySlice( this.values, from * stride, to * stride );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\t// ensure we do not get a GarbageInGarbageOut situation, make sure tracks are at least minimally viable\n\tvalidate: function () {\n\n\t\tlet valid = true;\n\n\t\tconst valueSize = this.getValueSize();\n\t\tif ( valueSize - Math.floor( valueSize ) !== 0 ) {\n\n\t\t\tconsole.error( 'THREE.KeyframeTrack: Invalid value size in track.', this );\n\t\t\tvalid = false;\n\n\t\t}\n\n\t\tconst times = this.times,\n\t\t\tvalues = this.values,\n\n\t\t\tnKeys = times.length;\n\n\t\tif ( nKeys === 0 ) {\n\n\t\t\tconsole.error( 'THREE.KeyframeTrack: Track is empty.', this );\n\t\t\tvalid = false;\n\n\t\t}\n\n\t\tlet prevTime = null;\n\n\t\tfor ( let i = 0; i !== nKeys; i ++ ) {\n\n\t\t\tconst currTime = times[ i ];\n\n\t\t\tif ( typeof currTime === 'number' && isNaN( currTime ) ) {\n\n\t\t\t\tconsole.error( 'THREE.KeyframeTrack: Time is not a valid number.', this, i, currTime );\n\t\t\t\tvalid = false;\n\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t\tif ( prevTime !== null && prevTime > currTime ) {\n\n\t\t\t\tconsole.error( 'THREE.KeyframeTrack: Out of order keys.', this, i, currTime, prevTime );\n\t\t\t\tvalid = false;\n\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t\tprevTime = currTime;\n\n\t\t}\n\n\t\tif ( values !== undefined ) {\n\n\t\t\tif ( AnimationUtils.isTypedArray( values ) ) {\n\n\t\t\t\tfor ( let i = 0, n = values.length; i !== n; ++ i ) {\n\n\t\t\t\t\tconst value = values[ i ];\n\n\t\t\t\t\tif ( isNaN( value ) ) {\n\n\t\t\t\t\t\tconsole.error( 'THREE.KeyframeTrack: Value is not a valid number.', this, i, value );\n\t\t\t\t\t\tvalid = false;\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn valid;\n\n\t},\n\n\t// removes equivalent sequential keys as common in morph target sequences\n\t// (0,0,0,0,1,1,1,0,0,0,0,0,0,0) --> (0,0,1,1,0,0)\n\toptimize: function () {\n\n\t\t// times or values may be shared with other tracks, so overwriting is unsafe\n\t\tconst times = AnimationUtils.arraySlice( this.times ),\n\t\t\tvalues = AnimationUtils.arraySlice( this.values ),\n\t\t\tstride = this.getValueSize(),\n\n\t\t\tsmoothInterpolation = this.getInterpolation() === InterpolateSmooth,\n\n\t\t\tlastIndex = times.length - 1;\n\n\t\tlet writeIndex = 1;\n\n\t\tfor ( let i = 1; i < lastIndex; ++ i ) {\n\n\t\t\tlet keep = false;\n\n\t\t\tconst time = times[ i ];\n\t\t\tconst timeNext = times[ i + 1 ];\n\n\t\t\t// remove adjacent keyframes scheduled at the same time\n\n\t\t\tif ( time !== timeNext && ( i !== 1 || time !== time[ 0 ] ) ) {\n\n\t\t\t\tif ( ! smoothInterpolation ) {\n\n\t\t\t\t\t// remove unnecessary keyframes same as their neighbors\n\n\t\t\t\t\tconst offset = i * stride,\n\t\t\t\t\t\toffsetP = offset - stride,\n\t\t\t\t\t\toffsetN = offset + stride;\n\n\t\t\t\t\tfor ( let j = 0; j !== stride; ++ j ) {\n\n\t\t\t\t\t\tconst value = values[ offset + j ];\n\n\t\t\t\t\t\tif ( value !== values[ offsetP + j ] ||\n\t\t\t\t\t\t\tvalue !== values[ offsetN + j ] ) {\n\n\t\t\t\t\t\t\tkeep = true;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\tkeep = true;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// in-place compaction\n\n\t\t\tif ( keep ) {\n\n\t\t\t\tif ( i !== writeIndex ) {\n\n\t\t\t\t\ttimes[ writeIndex ] = times[ i ];\n\n\t\t\t\t\tconst readOffset = i * stride,\n\t\t\t\t\t\twriteOffset = writeIndex * stride;\n\n\t\t\t\t\tfor ( let j = 0; j !== stride; ++ j ) {\n\n\t\t\t\t\t\tvalues[ writeOffset + j ] = values[ readOffset + j ];\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\t++ writeIndex;\n\n\t\t\t}\n\n\t\t}\n\n\t\t// flush last keyframe (compaction looks ahead)\n\n\t\tif ( lastIndex > 0 ) {\n\n\t\t\ttimes[ writeIndex ] = times[ lastIndex ];\n\n\t\t\tfor ( let readOffset = lastIndex * stride, writeOffset = writeIndex * stride, j = 0; j !== stride; ++ j ) {\n\n\t\t\t\tvalues[ writeOffset + j ] = values[ readOffset + j ];\n\n\t\t\t}\n\n\t\t\t++ writeIndex;\n\n\t\t}\n\n\t\tif ( writeIndex !== times.length ) {\n\n\t\t\tthis.times = AnimationUtils.arraySlice( times, 0, writeIndex );\n\t\t\tthis.values = AnimationUtils.arraySlice( values, 0, writeIndex * stride );\n\n\t\t} else {\n\n\t\t\tthis.times = times;\n\t\t\tthis.values = values;\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tclone: function () {\n\n\t\tconst times = AnimationUtils.arraySlice( this.times, 0 );\n\t\tconst values = AnimationUtils.arraySlice( this.values, 0 );\n\n\t\tconst TypedKeyframeTrack = this.constructor;\n\t\tconst track = new TypedKeyframeTrack( this.name, times, values );\n\n\t\t// Interpolant argument to constructor is not saved, so copy the factory method directly.\n\t\ttrack.createInterpolant = this.createInterpolant;\n\n\t\treturn track;\n\n\t}\n\n} );\n\n/**\n * A Track of Boolean keyframe values.\n */\n\nfunction BooleanKeyframeTrack( name, times, values ) {\n\n\tKeyframeTrack.call( this, name, times, values );\n\n}\n\nBooleanKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {\n\n\tconstructor: BooleanKeyframeTrack,\n\n\tValueTypeName: 'bool',\n\tValueBufferType: Array,\n\n\tDefaultInterpolation: InterpolateDiscrete,\n\n\tInterpolantFactoryMethodLinear: undefined,\n\tInterpolantFactoryMethodSmooth: undefined\n\n\t// Note: Actually this track could have a optimized / compressed\n\t// representation of a single value and a custom interpolant that\n\t// computes \"firstValue ^ isOdd( index )\".\n\n} );\n\n/**\n * A Track of keyframe values that represent color.\n */\n\nfunction ColorKeyframeTrack( name, times, values, interpolation ) {\n\n\tKeyframeTrack.call( this, name, times, values, interpolation );\n\n}\n\nColorKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {\n\n\tconstructor: ColorKeyframeTrack,\n\n\tValueTypeName: 'color'\n\n\t// ValueBufferType is inherited\n\n\t// DefaultInterpolation is inherited\n\n\t// Note: Very basic implementation and nothing special yet.\n\t// However, this is the place for color space parameterization.\n\n} );\n\n/**\n * A Track of numeric keyframe values.\n */\n\nfunction NumberKeyframeTrack( name, times, values, interpolation ) {\n\n\tKeyframeTrack.call( this, name, times, values, interpolation );\n\n}\n\nNumberKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {\n\n\tconstructor: NumberKeyframeTrack,\n\n\tValueTypeName: 'number'\n\n\t// ValueBufferType is inherited\n\n\t// DefaultInterpolation is inherited\n\n} );\n\n/**\n * Spherical linear unit quaternion interpolant.\n */\n\nfunction QuaternionLinearInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {\n\n\tInterpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );\n\n}\n\nQuaternionLinearInterpolant.prototype = Object.assign( Object.create( Interpolant.prototype ), {\n\n\tconstructor: QuaternionLinearInterpolant,\n\n\tinterpolate_: function ( i1, t0, t, t1 ) {\n\n\t\tconst result = this.resultBuffer,\n\t\t\tvalues = this.sampleValues,\n\t\t\tstride = this.valueSize,\n\n\t\t\talpha = ( t - t0 ) / ( t1 - t0 );\n\n\t\tlet offset = i1 * stride;\n\n\t\tfor ( let end = offset + stride; offset !== end; offset += 4 ) {\n\n\t\t\tQuaternion.slerpFlat( result, 0, values, offset - stride, values, offset, alpha );\n\n\t\t}\n\n\t\treturn result;\n\n\t}\n\n} );\n\n/**\n * A Track of quaternion keyframe values.\n */\n\nfunction QuaternionKeyframeTrack( name, times, values, interpolation ) {\n\n\tKeyframeTrack.call( this, name, times, values, interpolation );\n\n}\n\nQuaternionKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {\n\n\tconstructor: QuaternionKeyframeTrack,\n\n\tValueTypeName: 'quaternion',\n\n\t// ValueBufferType is inherited\n\n\tDefaultInterpolation: InterpolateLinear,\n\n\tInterpolantFactoryMethodLinear: function ( result ) {\n\n\t\treturn new QuaternionLinearInterpolant( this.times, this.values, this.getValueSize(), result );\n\n\t},\n\n\tInterpolantFactoryMethodSmooth: undefined // not yet implemented\n\n} );\n\n/**\n * A Track that interpolates Strings\n */\n\nfunction StringKeyframeTrack( name, times, values, interpolation ) {\n\n\tKeyframeTrack.call( this, name, times, values, interpolation );\n\n}\n\nStringKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {\n\n\tconstructor: StringKeyframeTrack,\n\n\tValueTypeName: 'string',\n\tValueBufferType: Array,\n\n\tDefaultInterpolation: InterpolateDiscrete,\n\n\tInterpolantFactoryMethodLinear: undefined,\n\n\tInterpolantFactoryMethodSmooth: undefined\n\n} );\n\n/**\n * A Track of vectored keyframe values.\n */\n\nfunction VectorKeyframeTrack( name, times, values, interpolation ) {\n\n\tKeyframeTrack.call( this, name, times, values, interpolation );\n\n}\n\nVectorKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {\n\n\tconstructor: VectorKeyframeTrack,\n\n\tValueTypeName: 'vector'\n\n\t// ValueBufferType is inherited\n\n\t// DefaultInterpolation is inherited\n\n} );\n\nfunction AnimationClip( name, duration = - 1, tracks, blendMode = NormalAnimationBlendMode ) {\n\n\tthis.name = name;\n\tthis.tracks = tracks;\n\tthis.duration = duration;\n\tthis.blendMode = blendMode;\n\n\tthis.uuid = MathUtils.generateUUID();\n\n\t// this means it should figure out its duration by scanning the tracks\n\tif ( this.duration < 0 ) {\n\n\t\tthis.resetDuration();\n\n\t}\n\n}\n\nfunction getTrackTypeForValueTypeName( typeName ) {\n\n\tswitch ( typeName.toLowerCase() ) {\n\n\t\tcase 'scalar':\n\t\tcase 'double':\n\t\tcase 'float':\n\t\tcase 'number':\n\t\tcase 'integer':\n\n\t\t\treturn NumberKeyframeTrack;\n\n\t\tcase 'vector':\n\t\tcase 'vector2':\n\t\tcase 'vector3':\n\t\tcase 'vector4':\n\n\t\t\treturn VectorKeyframeTrack;\n\n\t\tcase 'color':\n\n\t\t\treturn ColorKeyframeTrack;\n\n\t\tcase 'quaternion':\n\n\t\t\treturn QuaternionKeyframeTrack;\n\n\t\tcase 'bool':\n\t\tcase 'boolean':\n\n\t\t\treturn BooleanKeyframeTrack;\n\n\t\tcase 'string':\n\n\t\t\treturn StringKeyframeTrack;\n\n\t}\n\n\tthrow new Error( 'THREE.KeyframeTrack: Unsupported typeName: ' + typeName );\n\n}\n\nfunction parseKeyframeTrack( json ) {\n\n\tif ( json.type === undefined ) {\n\n\t\tthrow new Error( 'THREE.KeyframeTrack: track type undefined, can not parse' );\n\n\t}\n\n\tconst trackType = getTrackTypeForValueTypeName( json.type );\n\n\tif ( json.times === undefined ) {\n\n\t\tconst times = [], values = [];\n\n\t\tAnimationUtils.flattenJSON( json.keys, times, values, 'value' );\n\n\t\tjson.times = times;\n\t\tjson.values = values;\n\n\t}\n\n\t// derived classes can define a static parse method\n\tif ( trackType.parse !== undefined ) {\n\n\t\treturn trackType.parse( json );\n\n\t} else {\n\n\t\t// by default, we assume a constructor compatible with the base\n\t\treturn new trackType( json.name, json.times, json.values, json.interpolation );\n\n\t}\n\n}\n\nObject.assign( AnimationClip, {\n\n\tparse: function ( json ) {\n\n\t\tconst tracks = [],\n\t\t\tjsonTracks = json.tracks,\n\t\t\tframeTime = 1.0 / ( json.fps || 1.0 );\n\n\t\tfor ( let i = 0, n = jsonTracks.length; i !== n; ++ i ) {\n\n\t\t\ttracks.push( parseKeyframeTrack( jsonTracks[ i ] ).scale( frameTime ) );\n\n\t\t}\n\n\t\tconst clip = new AnimationClip( json.name, json.duration, tracks, json.blendMode );\n\t\tclip.uuid = json.uuid;\n\n\t\treturn clip;\n\n\t},\n\n\ttoJSON: function ( clip ) {\n\n\t\tconst tracks = [],\n\t\t\tclipTracks = clip.tracks;\n\n\t\tconst json = {\n\n\t\t\t'name': clip.name,\n\t\t\t'duration': clip.duration,\n\t\t\t'tracks': tracks,\n\t\t\t'uuid': clip.uuid,\n\t\t\t'blendMode': clip.blendMode\n\n\t\t};\n\n\t\tfor ( let i = 0, n = clipTracks.length; i !== n; ++ i ) {\n\n\t\t\ttracks.push( KeyframeTrack.toJSON( clipTracks[ i ] ) );\n\n\t\t}\n\n\t\treturn json;\n\n\t},\n\n\tCreateFromMorphTargetSequence: function ( name, morphTargetSequence, fps, noLoop ) {\n\n\t\tconst numMorphTargets = morphTargetSequence.length;\n\t\tconst tracks = [];\n\n\t\tfor ( let i = 0; i < numMorphTargets; i ++ ) {\n\n\t\t\tlet times = [];\n\t\t\tlet values = [];\n\n\t\t\ttimes.push(\n\t\t\t\t( i + numMorphTargets - 1 ) % numMorphTargets,\n\t\t\t\ti,\n\t\t\t\t( i + 1 ) % numMorphTargets );\n\n\t\t\tvalues.push( 0, 1, 0 );\n\n\t\t\tconst order = AnimationUtils.getKeyframeOrder( times );\n\t\t\ttimes = AnimationUtils.sortedArray( times, 1, order );\n\t\t\tvalues = AnimationUtils.sortedArray( values, 1, order );\n\n\t\t\t// if there is a key at the first frame, duplicate it as the\n\t\t\t// last frame as well for perfect loop.\n\t\t\tif ( ! noLoop && times[ 0 ] === 0 ) {\n\n\t\t\t\ttimes.push( numMorphTargets );\n\t\t\t\tvalues.push( values[ 0 ] );\n\n\t\t\t}\n\n\t\t\ttracks.push(\n\t\t\t\tnew NumberKeyframeTrack(\n\t\t\t\t\t'.morphTargetInfluences[' + morphTargetSequence[ i ].name + ']',\n\t\t\t\t\ttimes, values\n\t\t\t\t).scale( 1.0 / fps ) );\n\n\t\t}\n\n\t\treturn new AnimationClip( name, - 1, tracks );\n\n\t},\n\n\tfindByName: function ( objectOrClipArray, name ) {\n\n\t\tlet clipArray = objectOrClipArray;\n\n\t\tif ( ! Array.isArray( objectOrClipArray ) ) {\n\n\t\t\tconst o = objectOrClipArray;\n\t\t\tclipArray = o.geometry && o.geometry.animations || o.animations;\n\n\t\t}\n\n\t\tfor ( let i = 0; i < clipArray.length; i ++ ) {\n\n\t\t\tif ( clipArray[ i ].name === name ) {\n\n\t\t\t\treturn clipArray[ i ];\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn null;\n\n\t},\n\n\tCreateClipsFromMorphTargetSequences: function ( morphTargets, fps, noLoop ) {\n\n\t\tconst animationToMorphTargets = {};\n\n\t\t// tested with https://regex101.com/ on trick sequences\n\t\t// such flamingo_flyA_003, flamingo_run1_003, crdeath0059\n\t\tconst pattern = /^([\\w-]*?)([\\d]+)$/;\n\n\t\t// sort morph target names into animation groups based\n\t\t// patterns like Walk_001, Walk_002, Run_001, Run_002\n\t\tfor ( let i = 0, il = morphTargets.length; i < il; i ++ ) {\n\n\t\t\tconst morphTarget = morphTargets[ i ];\n\t\t\tconst parts = morphTarget.name.match( pattern );\n\n\t\t\tif ( parts && parts.length > 1 ) {\n\n\t\t\t\tconst name = parts[ 1 ];\n\n\t\t\t\tlet animationMorphTargets = animationToMorphTargets[ name ];\n\n\t\t\t\tif ( ! animationMorphTargets ) {\n\n\t\t\t\t\tanimationToMorphTargets[ name ] = animationMorphTargets = [];\n\n\t\t\t\t}\n\n\t\t\t\tanimationMorphTargets.push( morphTarget );\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst clips = [];\n\n\t\tfor ( const name in animationToMorphTargets ) {\n\n\t\t\tclips.push( AnimationClip.CreateFromMorphTargetSequence( name, animationToMorphTargets[ name ], fps, noLoop ) );\n\n\t\t}\n\n\t\treturn clips;\n\n\t},\n\n\t// parse the animation.hierarchy format\n\tparseAnimation: function ( animation, bones ) {\n\n\t\tif ( ! animation ) {\n\n\t\t\tconsole.error( 'THREE.AnimationClip: No animation in JSONLoader data.' );\n\t\t\treturn null;\n\n\t\t}\n\n\t\tconst addNonemptyTrack = function ( trackType, trackName, animationKeys, propertyName, destTracks ) {\n\n\t\t\t// only return track if there are actually keys.\n\t\t\tif ( animationKeys.length !== 0 ) {\n\n\t\t\t\tconst times = [];\n\t\t\t\tconst values = [];\n\n\t\t\t\tAnimationUtils.flattenJSON( animationKeys, times, values, propertyName );\n\n\t\t\t\t// empty keys are filtered out, so check again\n\t\t\t\tif ( times.length !== 0 ) {\n\n\t\t\t\t\tdestTracks.push( new trackType( trackName, times, values ) );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t};\n\n\t\tconst tracks = [];\n\n\t\tconst clipName = animation.name || 'default';\n\t\tconst fps = animation.fps || 30;\n\t\tconst blendMode = animation.blendMode;\n\n\t\t// automatic length determination in AnimationClip.\n\t\tlet duration = animation.length || - 1;\n\n\t\tconst hierarchyTracks = animation.hierarchy || [];\n\n\t\tfor ( let h = 0; h < hierarchyTracks.length; h ++ ) {\n\n\t\t\tconst animationKeys = hierarchyTracks[ h ].keys;\n\n\t\t\t// skip empty tracks\n\t\t\tif ( ! animationKeys || animationKeys.length === 0 ) continue;\n\n\t\t\t// process morph targets\n\t\t\tif ( animationKeys[ 0 ].morphTargets ) {\n\n\t\t\t\t// figure out all morph targets used in this track\n\t\t\t\tconst morphTargetNames = {};\n\n\t\t\t\tlet k;\n\n\t\t\t\tfor ( k = 0; k < animationKeys.length; k ++ ) {\n\n\t\t\t\t\tif ( animationKeys[ k ].morphTargets ) {\n\n\t\t\t\t\t\tfor ( let m = 0; m < animationKeys[ k ].morphTargets.length; m ++ ) {\n\n\t\t\t\t\t\t\tmorphTargetNames[ animationKeys[ k ].morphTargets[ m ] ] = - 1;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\t// create a track for each morph target with all zero\n\t\t\t\t// morphTargetInfluences except for the keys in which\n\t\t\t\t// the morphTarget is named.\n\t\t\t\tfor ( const morphTargetName in morphTargetNames ) {\n\n\t\t\t\t\tconst times = [];\n\t\t\t\t\tconst values = [];\n\n\t\t\t\t\tfor ( let m = 0; m !== animationKeys[ k ].morphTargets.length; ++ m ) {\n\n\t\t\t\t\t\tconst animationKey = animationKeys[ k ];\n\n\t\t\t\t\t\ttimes.push( animationKey.time );\n\t\t\t\t\t\tvalues.push( ( animationKey.morphTarget === morphTargetName ) ? 1 : 0 );\n\n\t\t\t\t\t}\n\n\t\t\t\t\ttracks.push( new NumberKeyframeTrack( '.morphTargetInfluence[' + morphTargetName + ']', times, values ) );\n\n\t\t\t\t}\n\n\t\t\t\tduration = morphTargetNames.length * ( fps || 1.0 );\n\n\t\t\t} else {\n\n\t\t\t\t// ...assume skeletal animation\n\n\t\t\t\tconst boneName = '.bones[' + bones[ h ].name + ']';\n\n\t\t\t\taddNonemptyTrack(\n\t\t\t\t\tVectorKeyframeTrack, boneName + '.position',\n\t\t\t\t\tanimationKeys, 'pos', tracks );\n\n\t\t\t\taddNonemptyTrack(\n\t\t\t\t\tQuaternionKeyframeTrack, boneName + '.quaternion',\n\t\t\t\t\tanimationKeys, 'rot', tracks );\n\n\t\t\t\taddNonemptyTrack(\n\t\t\t\t\tVectorKeyframeTrack, boneName + '.scale',\n\t\t\t\t\tanimationKeys, 'scl', tracks );\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( tracks.length === 0 ) {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\tconst clip = new AnimationClip( clipName, duration, tracks, blendMode );\n\n\t\treturn clip;\n\n\t}\n\n} );\n\nObject.assign( AnimationClip.prototype, {\n\n\tresetDuration: function () {\n\n\t\tconst tracks = this.tracks;\n\t\tlet duration = 0;\n\n\t\tfor ( let i = 0, n = tracks.length; i !== n; ++ i ) {\n\n\t\t\tconst track = this.tracks[ i ];\n\n\t\t\tduration = Math.max( duration, track.times[ track.times.length - 1 ] );\n\n\t\t}\n\n\t\tthis.duration = duration;\n\n\t\treturn this;\n\n\t},\n\n\ttrim: function () {\n\n\t\tfor ( let i = 0; i < this.tracks.length; i ++ ) {\n\n\t\t\tthis.tracks[ i ].trim( 0, this.duration );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tvalidate: function () {\n\n\t\tlet valid = true;\n\n\t\tfor ( let i = 0; i < this.tracks.length; i ++ ) {\n\n\t\t\tvalid = valid && this.tracks[ i ].validate();\n\n\t\t}\n\n\t\treturn valid;\n\n\t},\n\n\toptimize: function () {\n\n\t\tfor ( let i = 0; i < this.tracks.length; i ++ ) {\n\n\t\t\tthis.tracks[ i ].optimize();\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tclone: function () {\n\n\t\tconst tracks = [];\n\n\t\tfor ( let i = 0; i < this.tracks.length; i ++ ) {\n\n\t\t\ttracks.push( this.tracks[ i ].clone() );\n\n\t\t}\n\n\t\treturn new AnimationClip( this.name, this.duration, tracks, this.blendMode );\n\n\t},\n\n\ttoJSON: function () {\n\n\t\treturn AnimationClip.toJSON( this );\n\n\t}\n\n} );\n\nconst Cache = {\n\n\tenabled: false,\n\n\tfiles: {},\n\n\tadd: function ( key, file ) {\n\n\t\tif ( this.enabled === false ) return;\n\n\t\t// console.log( 'THREE.Cache', 'Adding key:', key );\n\n\t\tthis.files[ key ] = file;\n\n\t},\n\n\tget: function ( key ) {\n\n\t\tif ( this.enabled === false ) return;\n\n\t\t// console.log( 'THREE.Cache', 'Checking key:', key );\n\n\t\treturn this.files[ key ];\n\n\t},\n\n\tremove: function ( key ) {\n\n\t\tdelete this.files[ key ];\n\n\t},\n\n\tclear: function () {\n\n\t\tthis.files = {};\n\n\t}\n\n};\n\nfunction LoadingManager( onLoad, onProgress, onError ) {\n\n\tconst scope = this;\n\n\tlet isLoading = false;\n\tlet itemsLoaded = 0;\n\tlet itemsTotal = 0;\n\tlet urlModifier = undefined;\n\tconst handlers = [];\n\n\t// Refer to #5689 for the reason why we don't set .onStart\n\t// in the constructor\n\n\tthis.onStart = undefined;\n\tthis.onLoad = onLoad;\n\tthis.onProgress = onProgress;\n\tthis.onError = onError;\n\n\tthis.itemStart = function ( url ) {\n\n\t\titemsTotal ++;\n\n\t\tif ( isLoading === false ) {\n\n\t\t\tif ( scope.onStart !== undefined ) {\n\n\t\t\t\tscope.onStart( url, itemsLoaded, itemsTotal );\n\n\t\t\t}\n\n\t\t}\n\n\t\tisLoading = true;\n\n\t};\n\n\tthis.itemEnd = function ( url ) {\n\n\t\titemsLoaded ++;\n\n\t\tif ( scope.onProgress !== undefined ) {\n\n\t\t\tscope.onProgress( url, itemsLoaded, itemsTotal );\n\n\t\t}\n\n\t\tif ( itemsLoaded === itemsTotal ) {\n\n\t\t\tisLoading = false;\n\n\t\t\tif ( scope.onLoad !== undefined ) {\n\n\t\t\t\tscope.onLoad();\n\n\t\t\t}\n\n\t\t}\n\n\t};\n\n\tthis.itemError = function ( url ) {\n\n\t\tif ( scope.onError !== undefined ) {\n\n\t\t\tscope.onError( url );\n\n\t\t}\n\n\t};\n\n\tthis.resolveURL = function ( url ) {\n\n\t\tif ( urlModifier ) {\n\n\t\t\treturn urlModifier( url );\n\n\t\t}\n\n\t\treturn url;\n\n\t};\n\n\tthis.setURLModifier = function ( transform ) {\n\n\t\turlModifier = transform;\n\n\t\treturn this;\n\n\t};\n\n\tthis.addHandler = function ( regex, loader ) {\n\n\t\thandlers.push( regex, loader );\n\n\t\treturn this;\n\n\t};\n\n\tthis.removeHandler = function ( regex ) {\n\n\t\tconst index = handlers.indexOf( regex );\n\n\t\tif ( index !== - 1 ) {\n\n\t\t\thandlers.splice( index, 2 );\n\n\t\t}\n\n\t\treturn this;\n\n\t};\n\n\tthis.getHandler = function ( file ) {\n\n\t\tfor ( let i = 0, l = handlers.length; i < l; i += 2 ) {\n\n\t\t\tconst regex = handlers[ i ];\n\t\t\tconst loader = handlers[ i + 1 ];\n\n\t\t\tif ( regex.global ) regex.lastIndex = 0; // see #17920\n\n\t\t\tif ( regex.test( file ) ) {\n\n\t\t\t\treturn loader;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn null;\n\n\t};\n\n}\n\nconst DefaultLoadingManager = new LoadingManager();\n\nfunction Loader( manager ) {\n\n\tthis.manager = ( manager !== undefined ) ? manager : DefaultLoadingManager;\n\n\tthis.crossOrigin = 'anonymous';\n\tthis.withCredentials = false;\n\tthis.path = '';\n\tthis.resourcePath = '';\n\tthis.requestHeader = {};\n\n}\n\nObject.assign( Loader.prototype, {\n\n\tload: function ( /* url, onLoad, onProgress, onError */ ) {},\n\n\tloadAsync: function ( url, onProgress ) {\n\n\t\tconst scope = this;\n\n\t\treturn new Promise( function ( resolve, reject ) {\n\n\t\t\tscope.load( url, resolve, onProgress, reject );\n\n\t\t} );\n\n\t},\n\n\tparse: function ( /* data */ ) {},\n\n\tsetCrossOrigin: function ( crossOrigin ) {\n\n\t\tthis.crossOrigin = crossOrigin;\n\t\treturn this;\n\n\t},\n\n\tsetWithCredentials: function ( value ) {\n\n\t\tthis.withCredentials = value;\n\t\treturn this;\n\n\t},\n\n\tsetPath: function ( path ) {\n\n\t\tthis.path = path;\n\t\treturn this;\n\n\t},\n\n\tsetResourcePath: function ( resourcePath ) {\n\n\t\tthis.resourcePath = resourcePath;\n\t\treturn this;\n\n\t},\n\n\tsetRequestHeader: function ( requestHeader ) {\n\n\t\tthis.requestHeader = requestHeader;\n\t\treturn this;\n\n\t}\n\n} );\n\nconst loading = {};\n\nfunction FileLoader( manager ) {\n\n\tLoader.call( this, manager );\n\n}\n\nFileLoader.prototype = Object.assign( Object.create( Loader.prototype ), {\n\n\tconstructor: FileLoader,\n\n\tload: function ( url, onLoad, onProgress, onError ) {\n\n\t\tif ( url === undefined ) url = '';\n\n\t\tif ( this.path !== undefined ) url = this.path + url;\n\n\t\turl = this.manager.resolveURL( url );\n\n\t\tconst scope = this;\n\n\t\tconst cached = Cache.get( url );\n\n\t\tif ( cached !== undefined ) {\n\n\t\t\tscope.manager.itemStart( url );\n\n\t\t\tsetTimeout( function () {\n\n\t\t\t\tif ( onLoad ) onLoad( cached );\n\n\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t}, 0 );\n\n\t\t\treturn cached;\n\n\t\t}\n\n\t\t// Check if request is duplicate\n\n\t\tif ( loading[ url ] !== undefined ) {\n\n\t\t\tloading[ url ].push( {\n\n\t\t\t\tonLoad: onLoad,\n\t\t\t\tonProgress: onProgress,\n\t\t\t\tonError: onError\n\n\t\t\t} );\n\n\t\t\treturn;\n\n\t\t}\n\n\t\t// Check for data: URI\n\t\tconst dataUriRegex = /^data:(.*?)(;base64)?,(.*)$/;\n\t\tconst dataUriRegexResult = url.match( dataUriRegex );\n\t\tlet request;\n\n\t\t// Safari can not handle Data URIs through XMLHttpRequest so process manually\n\t\tif ( dataUriRegexResult ) {\n\n\t\t\tconst mimeType = dataUriRegexResult[ 1 ];\n\t\t\tconst isBase64 = !! dataUriRegexResult[ 2 ];\n\n\t\t\tlet data = dataUriRegexResult[ 3 ];\n\t\t\tdata = decodeURIComponent( data );\n\n\t\t\tif ( isBase64 ) data = atob( data );\n\n\t\t\ttry {\n\n\t\t\t\tlet response;\n\t\t\t\tconst responseType = ( this.responseType || '' ).toLowerCase();\n\n\t\t\t\tswitch ( responseType ) {\n\n\t\t\t\t\tcase 'arraybuffer':\n\t\t\t\t\tcase 'blob':\n\n\t\t\t\t\t\tconst view = new Uint8Array( data.length );\n\n\t\t\t\t\t\tfor ( let i = 0; i < data.length; i ++ ) {\n\n\t\t\t\t\t\t\tview[ i ] = data.charCodeAt( i );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tif ( responseType === 'blob' ) {\n\n\t\t\t\t\t\t\tresponse = new Blob( [ view.buffer ], { type: mimeType } );\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tresponse = view.buffer;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'document':\n\n\t\t\t\t\t\tconst parser = new DOMParser();\n\t\t\t\t\t\tresponse = parser.parseFromString( data, mimeType );\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'json':\n\n\t\t\t\t\t\tresponse = JSON.parse( data );\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tdefault: // 'text' or other\n\n\t\t\t\t\t\tresponse = data;\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t}\n\n\t\t\t\t// Wait for next browser tick like standard XMLHttpRequest event dispatching does\n\t\t\t\tsetTimeout( function () {\n\n\t\t\t\t\tif ( onLoad ) onLoad( response );\n\n\t\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t\t}, 0 );\n\n\t\t\t} catch ( error ) {\n\n\t\t\t\t// Wait for next browser tick like standard XMLHttpRequest event dispatching does\n\t\t\t\tsetTimeout( function () {\n\n\t\t\t\t\tif ( onError ) onError( error );\n\n\t\t\t\t\tscope.manager.itemError( url );\n\t\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t\t}, 0 );\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\t// Initialise array for duplicate requests\n\n\t\t\tloading[ url ] = [];\n\n\t\t\tloading[ url ].push( {\n\n\t\t\t\tonLoad: onLoad,\n\t\t\t\tonProgress: onProgress,\n\t\t\t\tonError: onError\n\n\t\t\t} );\n\n\t\t\trequest = new XMLHttpRequest();\n\n\t\t\trequest.open( 'GET', url, true );\n\n\t\t\trequest.addEventListener( 'load', function ( event ) {\n\n\t\t\t\tconst response = this.response;\n\n\t\t\t\tconst callbacks = loading[ url ];\n\n\t\t\t\tdelete loading[ url ];\n\n\t\t\t\tif ( this.status === 200 || this.status === 0 ) {\n\n\t\t\t\t\t// Some browsers return HTTP Status 0 when using non-http protocol\n\t\t\t\t\t// e.g. 'file://' or 'data://'. Handle as success.\n\n\t\t\t\t\tif ( this.status === 0 ) console.warn( 'THREE.FileLoader: HTTP Status 0 received.' );\n\n\t\t\t\t\t// Add to cache only on HTTP success, so that we do not cache\n\t\t\t\t\t// error response bodies as proper responses to requests.\n\t\t\t\t\tCache.add( url, response );\n\n\t\t\t\t\tfor ( let i = 0, il = callbacks.length; i < il; i ++ ) {\n\n\t\t\t\t\t\tconst callback = callbacks[ i ];\n\t\t\t\t\t\tif ( callback.onLoad ) callback.onLoad( response );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tfor ( let i = 0, il = callbacks.length; i < il; i ++ ) {\n\n\t\t\t\t\t\tconst callback = callbacks[ i ];\n\t\t\t\t\t\tif ( callback.onError ) callback.onError( event );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tscope.manager.itemError( url );\n\t\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t\t}\n\n\t\t\t}, false );\n\n\t\t\trequest.addEventListener( 'progress', function ( event ) {\n\n\t\t\t\tconst callbacks = loading[ url ];\n\n\t\t\t\tfor ( let i = 0, il = callbacks.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst callback = callbacks[ i ];\n\t\t\t\t\tif ( callback.onProgress ) callback.onProgress( event );\n\n\t\t\t\t}\n\n\t\t\t}, false );\n\n\t\t\trequest.addEventListener( 'error', function ( event ) {\n\n\t\t\t\tconst callbacks = loading[ url ];\n\n\t\t\t\tdelete loading[ url ];\n\n\t\t\t\tfor ( let i = 0, il = callbacks.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst callback = callbacks[ i ];\n\t\t\t\t\tif ( callback.onError ) callback.onError( event );\n\n\t\t\t\t}\n\n\t\t\t\tscope.manager.itemError( url );\n\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t}, false );\n\n\t\t\trequest.addEventListener( 'abort', function ( event ) {\n\n\t\t\t\tconst callbacks = loading[ url ];\n\n\t\t\t\tdelete loading[ url ];\n\n\t\t\t\tfor ( let i = 0, il = callbacks.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst callback = callbacks[ i ];\n\t\t\t\t\tif ( callback.onError ) callback.onError( event );\n\n\t\t\t\t}\n\n\t\t\t\tscope.manager.itemError( url );\n\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t}, false );\n\n\t\t\tif ( this.responseType !== undefined ) request.responseType = this.responseType;\n\t\t\tif ( this.withCredentials !== undefined ) request.withCredentials = this.withCredentials;\n\n\t\t\tif ( request.overrideMimeType ) request.overrideMimeType( this.mimeType !== undefined ? this.mimeType : 'text/plain' );\n\n\t\t\tfor ( const header in this.requestHeader ) {\n\n\t\t\t\trequest.setRequestHeader( header, this.requestHeader[ header ] );\n\n\t\t\t}\n\n\t\t\trequest.send( null );\n\n\t\t}\n\n\t\tscope.manager.itemStart( url );\n\n\t\treturn request;\n\n\t},\n\n\tsetResponseType: function ( value ) {\n\n\t\tthis.responseType = value;\n\t\treturn this;\n\n\t},\n\n\tsetMimeType: function ( value ) {\n\n\t\tthis.mimeType = value;\n\t\treturn this;\n\n\t}\n\n} );\n\nfunction AnimationLoader( manager ) {\n\n\tLoader.call( this, manager );\n\n}\n\nAnimationLoader.prototype = Object.assign( Object.create( Loader.prototype ), {\n\n\tconstructor: AnimationLoader,\n\n\tload: function ( url, onLoad, onProgress, onError ) {\n\n\t\tconst scope = this;\n\n\t\tconst loader = new FileLoader( scope.manager );\n\t\tloader.setPath( scope.path );\n\t\tloader.setRequestHeader( scope.requestHeader );\n\t\tloader.setWithCredentials( scope.withCredentials );\n\t\tloader.load( url, function ( text ) {\n\n\t\t\ttry {\n\n\t\t\t\tonLoad( scope.parse( JSON.parse( text ) ) );\n\n\t\t\t} catch ( e ) {\n\n\t\t\t\tif ( onError ) {\n\n\t\t\t\t\tonError( e );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.error( e );\n\n\t\t\t\t}\n\n\t\t\t\tscope.manager.itemError( url );\n\n\t\t\t}\n\n\t\t}, onProgress, onError );\n\n\t},\n\n\tparse: function ( json ) {\n\n\t\tconst animations = [];\n\n\t\tfor ( let i = 0; i < json.length; i ++ ) {\n\n\t\t\tconst clip = AnimationClip.parse( json[ i ] );\n\n\t\t\tanimations.push( clip );\n\n\t\t}\n\n\t\treturn animations;\n\n\t}\n\n} );\n\n/**\n * Abstract Base class to block based textures loader (dds, pvr, ...)\n *\n * Sub classes have to implement the parse() method which will be used in load().\n */\n\nfunction CompressedTextureLoader( manager ) {\n\n\tLoader.call( this, manager );\n\n}\n\nCompressedTextureLoader.prototype = Object.assign( Object.create( Loader.prototype ), {\n\n\tconstructor: CompressedTextureLoader,\n\n\tload: function ( url, onLoad, onProgress, onError ) {\n\n\t\tconst scope = this;\n\n\t\tconst images = [];\n\n\t\tconst texture = new CompressedTexture();\n\n\t\tconst loader = new FileLoader( this.manager );\n\t\tloader.setPath( this.path );\n\t\tloader.setResponseType( 'arraybuffer' );\n\t\tloader.setRequestHeader( this.requestHeader );\n\t\tloader.setWithCredentials( scope.withCredentials );\n\n\t\tlet loaded = 0;\n\n\t\tfunction loadTexture( i ) {\n\n\t\t\tloader.load( url[ i ], function ( buffer ) {\n\n\t\t\t\tconst texDatas = scope.parse( buffer, true );\n\n\t\t\t\timages[ i ] = {\n\t\t\t\t\twidth: texDatas.width,\n\t\t\t\t\theight: texDatas.height,\n\t\t\t\t\tformat: texDatas.format,\n\t\t\t\t\tmipmaps: texDatas.mipmaps\n\t\t\t\t};\n\n\t\t\t\tloaded += 1;\n\n\t\t\t\tif ( loaded === 6 ) {\n\n\t\t\t\t\tif ( texDatas.mipmapCount === 1 ) texture.minFilter = LinearFilter;\n\n\t\t\t\t\ttexture.image = images;\n\t\t\t\t\ttexture.format = texDatas.format;\n\t\t\t\t\ttexture.needsUpdate = true;\n\n\t\t\t\t\tif ( onLoad ) onLoad( texture );\n\n\t\t\t\t}\n\n\t\t\t}, onProgress, onError );\n\n\t\t}\n\n\t\tif ( Array.isArray( url ) ) {\n\n\t\t\tfor ( let i = 0, il = url.length; i < il; ++ i ) {\n\n\t\t\t\tloadTexture( i );\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\t// compressed cubemap texture stored in a single DDS file\n\n\t\t\tloader.load( url, function ( buffer ) {\n\n\t\t\t\tconst texDatas = scope.parse( buffer, true );\n\n\t\t\t\tif ( texDatas.isCubemap ) {\n\n\t\t\t\t\tconst faces = texDatas.mipmaps.length / texDatas.mipmapCount;\n\n\t\t\t\t\tfor ( let f = 0; f < faces; f ++ ) {\n\n\t\t\t\t\t\timages[ f ] = { mipmaps: [] };\n\n\t\t\t\t\t\tfor ( let i = 0; i < texDatas.mipmapCount; i ++ ) {\n\n\t\t\t\t\t\t\timages[ f ].mipmaps.push( texDatas.mipmaps[ f * texDatas.mipmapCount + i ] );\n\t\t\t\t\t\t\timages[ f ].format = texDatas.format;\n\t\t\t\t\t\t\timages[ f ].width = texDatas.width;\n\t\t\t\t\t\t\timages[ f ].height = texDatas.height;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\ttexture.image = images;\n\n\t\t\t\t} else {\n\n\t\t\t\t\ttexture.image.width = texDatas.width;\n\t\t\t\t\ttexture.image.height = texDatas.height;\n\t\t\t\t\ttexture.mipmaps = texDatas.mipmaps;\n\n\t\t\t\t}\n\n\t\t\t\tif ( texDatas.mipmapCount === 1 ) {\n\n\t\t\t\t\ttexture.minFilter = LinearFilter;\n\n\t\t\t\t}\n\n\t\t\t\ttexture.format = texDatas.format;\n\t\t\t\ttexture.needsUpdate = true;\n\n\t\t\t\tif ( onLoad ) onLoad( texture );\n\n\t\t\t}, onProgress, onError );\n\n\t\t}\n\n\t\treturn texture;\n\n\t}\n\n} );\n\nfunction ImageLoader( manager ) {\n\n\tLoader.call( this, manager );\n\n}\n\nImageLoader.prototype = Object.assign( Object.create( Loader.prototype ), {\n\n\tconstructor: ImageLoader,\n\n\tload: function ( url, onLoad, onProgress, onError ) {\n\n\t\tif ( this.path !== undefined ) url = this.path + url;\n\n\t\turl = this.manager.resolveURL( url );\n\n\t\tconst scope = this;\n\n\t\tconst cached = Cache.get( url );\n\n\t\tif ( cached !== undefined ) {\n\n\t\t\tscope.manager.itemStart( url );\n\n\t\t\tsetTimeout( function () {\n\n\t\t\t\tif ( onLoad ) onLoad( cached );\n\n\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t}, 0 );\n\n\t\t\treturn cached;\n\n\t\t}\n\n\t\tconst image = document.createElementNS( 'http://www.w3.org/1999/xhtml', 'img' );\n\n\t\tfunction onImageLoad() {\n\n\t\t\timage.removeEventListener( 'load', onImageLoad, false );\n\t\t\timage.removeEventListener( 'error', onImageError, false );\n\n\t\t\tCache.add( url, this );\n\n\t\t\tif ( onLoad ) onLoad( this );\n\n\t\t\tscope.manager.itemEnd( url );\n\n\t\t}\n\n\t\tfunction onImageError( event ) {\n\n\t\t\timage.removeEventListener( 'load', onImageLoad, false );\n\t\t\timage.removeEventListener( 'error', onImageError, false );\n\n\t\t\tif ( onError ) onError( event );\n\n\t\t\tscope.manager.itemError( url );\n\t\t\tscope.manager.itemEnd( url );\n\n\t\t}\n\n\t\timage.addEventListener( 'load', onImageLoad, false );\n\t\timage.addEventListener( 'error', onImageError, false );\n\n\t\tif ( url.substr( 0, 5 ) !== 'data:' ) {\n\n\t\t\tif ( this.crossOrigin !== undefined ) image.crossOrigin = this.crossOrigin;\n\n\t\t}\n\n\t\tscope.manager.itemStart( url );\n\n\t\timage.src = url;\n\n\t\treturn image;\n\n\t}\n\n} );\n\nfunction CubeTextureLoader( manager ) {\n\n\tLoader.call( this, manager );\n\n}\n\nCubeTextureLoader.prototype = Object.assign( Object.create( Loader.prototype ), {\n\n\tconstructor: CubeTextureLoader,\n\n\tload: function ( urls, onLoad, onProgress, onError ) {\n\n\t\tconst texture = new CubeTexture();\n\n\t\tconst loader = new ImageLoader( this.manager );\n\t\tloader.setCrossOrigin( this.crossOrigin );\n\t\tloader.setPath( this.path );\n\n\t\tlet loaded = 0;\n\n\t\tfunction loadTexture( i ) {\n\n\t\t\tloader.load( urls[ i ], function ( image ) {\n\n\t\t\t\ttexture.images[ i ] = image;\n\n\t\t\t\tloaded ++;\n\n\t\t\t\tif ( loaded === 6 ) {\n\n\t\t\t\t\ttexture.needsUpdate = true;\n\n\t\t\t\t\tif ( onLoad ) onLoad( texture );\n\n\t\t\t\t}\n\n\t\t\t}, undefined, onError );\n\n\t\t}\n\n\t\tfor ( let i = 0; i < urls.length; ++ i ) {\n\n\t\t\tloadTexture( i );\n\n\t\t}\n\n\t\treturn texture;\n\n\t}\n\n} );\n\n/**\n * Abstract Base class to load generic binary textures formats (rgbe, hdr, ...)\n *\n * Sub classes have to implement the parse() method which will be used in load().\n */\n\nfunction DataTextureLoader( manager ) {\n\n\tLoader.call( this, manager );\n\n}\n\nDataTextureLoader.prototype = Object.assign( Object.create( Loader.prototype ), {\n\n\tconstructor: DataTextureLoader,\n\n\tload: function ( url, onLoad, onProgress, onError ) {\n\n\t\tconst scope = this;\n\n\t\tconst texture = new DataTexture();\n\n\t\tconst loader = new FileLoader( this.manager );\n\t\tloader.setResponseType( 'arraybuffer' );\n\t\tloader.setRequestHeader( this.requestHeader );\n\t\tloader.setPath( this.path );\n\t\tloader.setWithCredentials( scope.withCredentials );\n\t\tloader.load( url, function ( buffer ) {\n\n\t\t\tconst texData = scope.parse( buffer );\n\n\t\t\tif ( ! texData ) return;\n\n\t\t\tif ( texData.image !== undefined ) {\n\n\t\t\t\ttexture.image = texData.image;\n\n\t\t\t} else if ( texData.data !== undefined ) {\n\n\t\t\t\ttexture.image.width = texData.width;\n\t\t\t\ttexture.image.height = texData.height;\n\t\t\t\ttexture.image.data = texData.data;\n\n\t\t\t}\n\n\t\t\ttexture.wrapS = texData.wrapS !== undefined ? texData.wrapS : ClampToEdgeWrapping;\n\t\t\ttexture.wrapT = texData.wrapT !== undefined ? texData.wrapT : ClampToEdgeWrapping;\n\n\t\t\ttexture.magFilter = texData.magFilter !== undefined ? texData.magFilter : LinearFilter;\n\t\t\ttexture.minFilter = texData.minFilter !== undefined ? texData.minFilter : LinearFilter;\n\n\t\t\ttexture.anisotropy = texData.anisotropy !== undefined ? texData.anisotropy : 1;\n\n\t\t\tif ( texData.format !== undefined ) {\n\n\t\t\t\ttexture.format = texData.format;\n\n\t\t\t}\n\n\t\t\tif ( texData.type !== undefined ) {\n\n\t\t\t\ttexture.type = texData.type;\n\n\t\t\t}\n\n\t\t\tif ( texData.mipmaps !== undefined ) {\n\n\t\t\t\ttexture.mipmaps = texData.mipmaps;\n\t\t\t\ttexture.minFilter = LinearMipmapLinearFilter; // presumably...\n\n\t\t\t}\n\n\t\t\tif ( texData.mipmapCount === 1 ) {\n\n\t\t\t\ttexture.minFilter = LinearFilter;\n\n\t\t\t}\n\n\t\t\ttexture.needsUpdate = true;\n\n\t\t\tif ( onLoad ) onLoad( texture, texData );\n\n\t\t}, onProgress, onError );\n\n\n\t\treturn texture;\n\n\t}\n\n} );\n\nfunction TextureLoader( manager ) {\n\n\tLoader.call( this, manager );\n\n}\n\nTextureLoader.prototype = Object.assign( Object.create( Loader.prototype ), {\n\n\tconstructor: TextureLoader,\n\n\tload: function ( url, onLoad, onProgress, onError ) {\n\n\t\tconst texture = new Texture();\n\n\t\tconst loader = new ImageLoader( this.manager );\n\t\tloader.setCrossOrigin( this.crossOrigin );\n\t\tloader.setPath( this.path );\n\n\t\tloader.load( url, function ( image ) {\n\n\t\t\ttexture.image = image;\n\n\t\t\t// JPEGs can't have an alpha channel, so memory can be saved by storing them as RGB.\n\t\t\tconst isJPEG = url.search( /\\.jpe?g($|\\?)/i ) > 0 || url.search( /^data\\:image\\/jpeg/ ) === 0;\n\n\t\t\ttexture.format = isJPEG ? RGBFormat : RGBAFormat;\n\t\t\ttexture.needsUpdate = true;\n\n\t\t\tif ( onLoad !== undefined ) {\n\n\t\t\t\tonLoad( texture );\n\n\t\t\t}\n\n\t\t}, onProgress, onError );\n\n\t\treturn texture;\n\n\t}\n\n} );\n\n/**\n * Extensible curve object.\n *\n * Some common of curve methods:\n * .getPoint( t, optionalTarget ), .getTangent( t, optionalTarget )\n * .getPointAt( u, optionalTarget ), .getTangentAt( u, optionalTarget )\n * .getPoints(), .getSpacedPoints()\n * .getLength()\n * .updateArcLengths()\n *\n * This following curves inherit from THREE.Curve:\n *\n * -- 2D curves --\n * THREE.ArcCurve\n * THREE.CubicBezierCurve\n * THREE.EllipseCurve\n * THREE.LineCurve\n * THREE.QuadraticBezierCurve\n * THREE.SplineCurve\n *\n * -- 3D curves --\n * THREE.CatmullRomCurve3\n * THREE.CubicBezierCurve3\n * THREE.LineCurve3\n * THREE.QuadraticBezierCurve3\n *\n * A series of curves can be represented as a THREE.CurvePath.\n *\n **/\n\nfunction Curve() {\n\n\tthis.type = 'Curve';\n\n\tthis.arcLengthDivisions = 200;\n\n}\n\nObject.assign( Curve.prototype, {\n\n\t// Virtual base class method to overwrite and implement in subclasses\n\t//\t- t [0 .. 1]\n\n\tgetPoint: function ( /* t, optionalTarget */ ) {\n\n\t\tconsole.warn( 'THREE.Curve: .getPoint() not implemented.' );\n\t\treturn null;\n\n\t},\n\n\t// Get point at relative position in curve according to arc length\n\t// - u [0 .. 1]\n\n\tgetPointAt: function ( u, optionalTarget ) {\n\n\t\tconst t = this.getUtoTmapping( u );\n\t\treturn this.getPoint( t, optionalTarget );\n\n\t},\n\n\t// Get sequence of points using getPoint( t )\n\n\tgetPoints: function ( divisions = 5 ) {\n\n\t\tconst points = [];\n\n\t\tfor ( let d = 0; d <= divisions; d ++ ) {\n\n\t\t\tpoints.push( this.getPoint( d / divisions ) );\n\n\t\t}\n\n\t\treturn points;\n\n\t},\n\n\t// Get sequence of points using getPointAt( u )\n\n\tgetSpacedPoints: function ( divisions = 5 ) {\n\n\t\tconst points = [];\n\n\t\tfor ( let d = 0; d <= divisions; d ++ ) {\n\n\t\t\tpoints.push( this.getPointAt( d / divisions ) );\n\n\t\t}\n\n\t\treturn points;\n\n\t},\n\n\t// Get total curve arc length\n\n\tgetLength: function () {\n\n\t\tconst lengths = this.getLengths();\n\t\treturn lengths[ lengths.length - 1 ];\n\n\t},\n\n\t// Get list of cumulative segment lengths\n\n\tgetLengths: function ( divisions ) {\n\n\t\tif ( divisions === undefined ) divisions = this.arcLengthDivisions;\n\n\t\tif ( this.cacheArcLengths &&\n\t\t\t( this.cacheArcLengths.length === divisions + 1 ) &&\n\t\t\t! this.needsUpdate ) {\n\n\t\t\treturn this.cacheArcLengths;\n\n\t\t}\n\n\t\tthis.needsUpdate = false;\n\n\t\tconst cache = [];\n\t\tlet current, last = this.getPoint( 0 );\n\t\tlet sum = 0;\n\n\t\tcache.push( 0 );\n\n\t\tfor ( let p = 1; p <= divisions; p ++ ) {\n\n\t\t\tcurrent = this.getPoint( p / divisions );\n\t\t\tsum += current.distanceTo( last );\n\t\t\tcache.push( sum );\n\t\t\tlast = current;\n\n\t\t}\n\n\t\tthis.cacheArcLengths = cache;\n\n\t\treturn cache; // { sums: cache, sum: sum }; Sum is in the last element.\n\n\t},\n\n\tupdateArcLengths: function () {\n\n\t\tthis.needsUpdate = true;\n\t\tthis.getLengths();\n\n\t},\n\n\t// Given u ( 0 .. 1 ), get a t to find p. This gives you points which are equidistant\n\n\tgetUtoTmapping: function ( u, distance ) {\n\n\t\tconst arcLengths = this.getLengths();\n\n\t\tlet i = 0;\n\t\tconst il = arcLengths.length;\n\n\t\tlet targetArcLength; // The targeted u distance value to get\n\n\t\tif ( distance ) {\n\n\t\t\ttargetArcLength = distance;\n\n\t\t} else {\n\n\t\t\ttargetArcLength = u * arcLengths[ il - 1 ];\n\n\t\t}\n\n\t\t// binary search for the index with largest value smaller than target u distance\n\n\t\tlet low = 0, high = il - 1, comparison;\n\n\t\twhile ( low <= high ) {\n\n\t\t\ti = Math.floor( low + ( high - low ) / 2 ); // less likely to overflow, though probably not issue here, JS doesn't really have integers, all numbers are floats\n\n\t\t\tcomparison = arcLengths[ i ] - targetArcLength;\n\n\t\t\tif ( comparison < 0 ) {\n\n\t\t\t\tlow = i + 1;\n\n\t\t\t} else if ( comparison > 0 ) {\n\n\t\t\t\thigh = i - 1;\n\n\t\t\t} else {\n\n\t\t\t\thigh = i;\n\t\t\t\tbreak;\n\n\t\t\t\t// DONE\n\n\t\t\t}\n\n\t\t}\n\n\t\ti = high;\n\n\t\tif ( arcLengths[ i ] === targetArcLength ) {\n\n\t\t\treturn i / ( il - 1 );\n\n\t\t}\n\n\t\t// we could get finer grain at lengths, or use simple interpolation between two points\n\n\t\tconst lengthBefore = arcLengths[ i ];\n\t\tconst lengthAfter = arcLengths[ i + 1 ];\n\n\t\tconst segmentLength = lengthAfter - lengthBefore;\n\n\t\t// determine where we are between the 'before' and 'after' points\n\n\t\tconst segmentFraction = ( targetArcLength - lengthBefore ) / segmentLength;\n\n\t\t// add that fractional amount to t\n\n\t\tconst t = ( i + segmentFraction ) / ( il - 1 );\n\n\t\treturn t;\n\n\t},\n\n\t// Returns a unit vector tangent at t\n\t// In case any sub curve does not implement its tangent derivation,\n\t// 2 points a small delta apart will be used to find its gradient\n\t// which seems to give a reasonable approximation\n\n\tgetTangent: function ( t, optionalTarget ) {\n\n\t\tconst delta = 0.0001;\n\t\tlet t1 = t - delta;\n\t\tlet t2 = t + delta;\n\n\t\t// Capping in case of danger\n\n\t\tif ( t1 < 0 ) t1 = 0;\n\t\tif ( t2 > 1 ) t2 = 1;\n\n\t\tconst pt1 = this.getPoint( t1 );\n\t\tconst pt2 = this.getPoint( t2 );\n\n\t\tconst tangent = optionalTarget || ( ( pt1.isVector2 ) ? new Vector2() : new Vector3() );\n\n\t\ttangent.copy( pt2 ).sub( pt1 ).normalize();\n\n\t\treturn tangent;\n\n\t},\n\n\tgetTangentAt: function ( u, optionalTarget ) {\n\n\t\tconst t = this.getUtoTmapping( u );\n\t\treturn this.getTangent( t, optionalTarget );\n\n\t},\n\n\tcomputeFrenetFrames: function ( segments, closed ) {\n\n\t\t// see http://www.cs.indiana.edu/pub/techreports/TR425.pdf\n\n\t\tconst normal = new Vector3();\n\n\t\tconst tangents = [];\n\t\tconst normals = [];\n\t\tconst binormals = [];\n\n\t\tconst vec = new Vector3();\n\t\tconst mat = new Matrix4();\n\n\t\t// compute the tangent vectors for each segment on the curve\n\n\t\tfor ( let i = 0; i <= segments; i ++ ) {\n\n\t\t\tconst u = i / segments;\n\n\t\t\ttangents[ i ] = this.getTangentAt( u, new Vector3() );\n\t\t\ttangents[ i ].normalize();\n\n\t\t}\n\n\t\t// select an initial normal vector perpendicular to the first tangent vector,\n\t\t// and in the direction of the minimum tangent xyz component\n\n\t\tnormals[ 0 ] = new Vector3();\n\t\tbinormals[ 0 ] = new Vector3();\n\t\tlet min = Number.MAX_VALUE;\n\t\tconst tx = Math.abs( tangents[ 0 ].x );\n\t\tconst ty = Math.abs( tangents[ 0 ].y );\n\t\tconst tz = Math.abs( tangents[ 0 ].z );\n\n\t\tif ( tx <= min ) {\n\n\t\t\tmin = tx;\n\t\t\tnormal.set( 1, 0, 0 );\n\n\t\t}\n\n\t\tif ( ty <= min ) {\n\n\t\t\tmin = ty;\n\t\t\tnormal.set( 0, 1, 0 );\n\n\t\t}\n\n\t\tif ( tz <= min ) {\n\n\t\t\tnormal.set( 0, 0, 1 );\n\n\t\t}\n\n\t\tvec.crossVectors( tangents[ 0 ], normal ).normalize();\n\n\t\tnormals[ 0 ].crossVectors( tangents[ 0 ], vec );\n\t\tbinormals[ 0 ].crossVectors( tangents[ 0 ], normals[ 0 ] );\n\n\n\t\t// compute the slowly-varying normal and binormal vectors for each segment on the curve\n\n\t\tfor ( let i = 1; i <= segments; i ++ ) {\n\n\t\t\tnormals[ i ] = normals[ i - 1 ].clone();\n\n\t\t\tbinormals[ i ] = binormals[ i - 1 ].clone();\n\n\t\t\tvec.crossVectors( tangents[ i - 1 ], tangents[ i ] );\n\n\t\t\tif ( vec.length() > Number.EPSILON ) {\n\n\t\t\t\tvec.normalize();\n\n\t\t\t\tconst theta = Math.acos( MathUtils.clamp( tangents[ i - 1 ].dot( tangents[ i ] ), - 1, 1 ) ); // clamp for floating pt errors\n\n\t\t\t\tnormals[ i ].applyMatrix4( mat.makeRotationAxis( vec, theta ) );\n\n\t\t\t}\n\n\t\t\tbinormals[ i ].crossVectors( tangents[ i ], normals[ i ] );\n\n\t\t}\n\n\t\t// if the curve is closed, postprocess the vectors so the first and last normal vectors are the same\n\n\t\tif ( closed === true ) {\n\n\t\t\tlet theta = Math.acos( MathUtils.clamp( normals[ 0 ].dot( normals[ segments ] ), - 1, 1 ) );\n\t\t\ttheta /= segments;\n\n\t\t\tif ( tangents[ 0 ].dot( vec.crossVectors( normals[ 0 ], normals[ segments ] ) ) > 0 ) {\n\n\t\t\t\ttheta = - theta;\n\n\t\t\t}\n\n\t\t\tfor ( let i = 1; i <= segments; i ++ ) {\n\n\t\t\t\t// twist a little...\n\t\t\t\tnormals[ i ].applyMatrix4( mat.makeRotationAxis( tangents[ i ], theta * i ) );\n\t\t\t\tbinormals[ i ].crossVectors( tangents[ i ], normals[ i ] );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn {\n\t\t\ttangents: tangents,\n\t\t\tnormals: normals,\n\t\t\tbinormals: binormals\n\t\t};\n\n\t},\n\n\tclone: function () {\n\n\t\treturn new this.constructor().copy( this );\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\tthis.arcLengthDivisions = source.arcLengthDivisions;\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function () {\n\n\t\tconst data = {\n\t\t\tmetadata: {\n\t\t\t\tversion: 4.5,\n\t\t\t\ttype: 'Curve',\n\t\t\t\tgenerator: 'Curve.toJSON'\n\t\t\t}\n\t\t};\n\n\t\tdata.arcLengthDivisions = this.arcLengthDivisions;\n\t\tdata.type = this.type;\n\n\t\treturn data;\n\n\t},\n\n\tfromJSON: function ( json ) {\n\n\t\tthis.arcLengthDivisions = json.arcLengthDivisions;\n\n\t\treturn this;\n\n\t}\n\n} );\n\nfunction EllipseCurve( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {\n\n\tCurve.call( this );\n\n\tthis.type = 'EllipseCurve';\n\n\tthis.aX = aX || 0;\n\tthis.aY = aY || 0;\n\n\tthis.xRadius = xRadius || 1;\n\tthis.yRadius = yRadius || 1;\n\n\tthis.aStartAngle = aStartAngle || 0;\n\tthis.aEndAngle = aEndAngle || 2 * Math.PI;\n\n\tthis.aClockwise = aClockwise || false;\n\n\tthis.aRotation = aRotation || 0;\n\n}\n\nEllipseCurve.prototype = Object.create( Curve.prototype );\nEllipseCurve.prototype.constructor = EllipseCurve;\n\nEllipseCurve.prototype.isEllipseCurve = true;\n\nEllipseCurve.prototype.getPoint = function ( t, optionalTarget ) {\n\n\tconst point = optionalTarget || new Vector2();\n\n\tconst twoPi = Math.PI * 2;\n\tlet deltaAngle = this.aEndAngle - this.aStartAngle;\n\tconst samePoints = Math.abs( deltaAngle ) < Number.EPSILON;\n\n\t// ensures that deltaAngle is 0 .. 2 PI\n\twhile ( deltaAngle < 0 ) deltaAngle += twoPi;\n\twhile ( deltaAngle > twoPi ) deltaAngle -= twoPi;\n\n\tif ( deltaAngle < Number.EPSILON ) {\n\n\t\tif ( samePoints ) {\n\n\t\t\tdeltaAngle = 0;\n\n\t\t} else {\n\n\t\t\tdeltaAngle = twoPi;\n\n\t\t}\n\n\t}\n\n\tif ( this.aClockwise === true && ! samePoints ) {\n\n\t\tif ( deltaAngle === twoPi ) {\n\n\t\t\tdeltaAngle = - twoPi;\n\n\t\t} else {\n\n\t\t\tdeltaAngle = deltaAngle - twoPi;\n\n\t\t}\n\n\t}\n\n\tconst angle = this.aStartAngle + t * deltaAngle;\n\tlet x = this.aX + this.xRadius * Math.cos( angle );\n\tlet y = this.aY + this.yRadius * Math.sin( angle );\n\n\tif ( this.aRotation !== 0 ) {\n\n\t\tconst cos = Math.cos( this.aRotation );\n\t\tconst sin = Math.sin( this.aRotation );\n\n\t\tconst tx = x - this.aX;\n\t\tconst ty = y - this.aY;\n\n\t\t// Rotate the point about the center of the ellipse.\n\t\tx = tx * cos - ty * sin + this.aX;\n\t\ty = tx * sin + ty * cos + this.aY;\n\n\t}\n\n\treturn point.set( x, y );\n\n};\n\nEllipseCurve.prototype.copy = function ( source ) {\n\n\tCurve.prototype.copy.call( this, source );\n\n\tthis.aX = source.aX;\n\tthis.aY = source.aY;\n\n\tthis.xRadius = source.xRadius;\n\tthis.yRadius = source.yRadius;\n\n\tthis.aStartAngle = source.aStartAngle;\n\tthis.aEndAngle = source.aEndAngle;\n\n\tthis.aClockwise = source.aClockwise;\n\n\tthis.aRotation = source.aRotation;\n\n\treturn this;\n\n};\n\n\nEllipseCurve.prototype.toJSON = function () {\n\n\tconst data = Curve.prototype.toJSON.call( this );\n\n\tdata.aX = this.aX;\n\tdata.aY = this.aY;\n\n\tdata.xRadius = this.xRadius;\n\tdata.yRadius = this.yRadius;\n\n\tdata.aStartAngle = this.aStartAngle;\n\tdata.aEndAngle = this.aEndAngle;\n\n\tdata.aClockwise = this.aClockwise;\n\n\tdata.aRotation = this.aRotation;\n\n\treturn data;\n\n};\n\nEllipseCurve.prototype.fromJSON = function ( json ) {\n\n\tCurve.prototype.fromJSON.call( this, json );\n\n\tthis.aX = json.aX;\n\tthis.aY = json.aY;\n\n\tthis.xRadius = json.xRadius;\n\tthis.yRadius = json.yRadius;\n\n\tthis.aStartAngle = json.aStartAngle;\n\tthis.aEndAngle = json.aEndAngle;\n\n\tthis.aClockwise = json.aClockwise;\n\n\tthis.aRotation = json.aRotation;\n\n\treturn this;\n\n};\n\nfunction ArcCurve( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {\n\n\tEllipseCurve.call( this, aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise );\n\n\tthis.type = 'ArcCurve';\n\n}\n\nArcCurve.prototype = Object.create( EllipseCurve.prototype );\nArcCurve.prototype.constructor = ArcCurve;\n\nArcCurve.prototype.isArcCurve = true;\n\n/**\n * Centripetal CatmullRom Curve - which is useful for avoiding\n * cusps and self-intersections in non-uniform catmull rom curves.\n * http://www.cemyuksel.com/research/catmullrom_param/catmullrom.pdf\n *\n * curve.type accepts centripetal(default), chordal and catmullrom\n * curve.tension is used for catmullrom which defaults to 0.5\n */\n\n\n/*\nBased on an optimized c++ solution in\n - http://stackoverflow.com/questions/9489736/catmull-rom-curve-with-no-cusps-and-no-self-intersections/\n - http://ideone.com/NoEbVM\n\nThis CubicPoly class could be used for reusing some variables and calculations,\nbut for three.js curve use, it could be possible inlined and flatten into a single function call\nwhich can be placed in CurveUtils.\n*/\n\nfunction CubicPoly() {\n\n\tlet c0 = 0, c1 = 0, c2 = 0, c3 = 0;\n\n\t/*\n\t * Compute coefficients for a cubic polynomial\n\t *   p(s) = c0 + c1*s + c2*s^2 + c3*s^3\n\t * such that\n\t *   p(0) = x0, p(1) = x1\n\t *  and\n\t *   p'(0) = t0, p'(1) = t1.\n\t */\n\tfunction init( x0, x1, t0, t1 ) {\n\n\t\tc0 = x0;\n\t\tc1 = t0;\n\t\tc2 = - 3 * x0 + 3 * x1 - 2 * t0 - t1;\n\t\tc3 = 2 * x0 - 2 * x1 + t0 + t1;\n\n\t}\n\n\treturn {\n\n\t\tinitCatmullRom: function ( x0, x1, x2, x3, tension ) {\n\n\t\t\tinit( x1, x2, tension * ( x2 - x0 ), tension * ( x3 - x1 ) );\n\n\t\t},\n\n\t\tinitNonuniformCatmullRom: function ( x0, x1, x2, x3, dt0, dt1, dt2 ) {\n\n\t\t\t// compute tangents when parameterized in [t1,t2]\n\t\t\tlet t1 = ( x1 - x0 ) / dt0 - ( x2 - x0 ) / ( dt0 + dt1 ) + ( x2 - x1 ) / dt1;\n\t\t\tlet t2 = ( x2 - x1 ) / dt1 - ( x3 - x1 ) / ( dt1 + dt2 ) + ( x3 - x2 ) / dt2;\n\n\t\t\t// rescale tangents for parametrization in [0,1]\n\t\t\tt1 *= dt1;\n\t\t\tt2 *= dt1;\n\n\t\t\tinit( x1, x2, t1, t2 );\n\n\t\t},\n\n\t\tcalc: function ( t ) {\n\n\t\t\tconst t2 = t * t;\n\t\t\tconst t3 = t2 * t;\n\t\t\treturn c0 + c1 * t + c2 * t2 + c3 * t3;\n\n\t\t}\n\n\t};\n\n}\n\n//\n\nconst tmp = new Vector3();\nconst px = new CubicPoly(), py = new CubicPoly(), pz = new CubicPoly();\n\nfunction CatmullRomCurve3( points = [], closed = false, curveType = 'centripetal', tension = 0.5 ) {\n\n\tCurve.call( this );\n\n\tthis.type = 'CatmullRomCurve3';\n\n\tthis.points = points;\n\tthis.closed = closed;\n\tthis.curveType = curveType;\n\tthis.tension = tension;\n\n}\n\nCatmullRomCurve3.prototype = Object.create( Curve.prototype );\nCatmullRomCurve3.prototype.constructor = CatmullRomCurve3;\n\nCatmullRomCurve3.prototype.isCatmullRomCurve3 = true;\n\nCatmullRomCurve3.prototype.getPoint = function ( t, optionalTarget = new Vector3() ) {\n\n\tconst point = optionalTarget;\n\n\tconst points = this.points;\n\tconst l = points.length;\n\n\tconst p = ( l - ( this.closed ? 0 : 1 ) ) * t;\n\tlet intPoint = Math.floor( p );\n\tlet weight = p - intPoint;\n\n\tif ( this.closed ) {\n\n\t\tintPoint += intPoint > 0 ? 0 : ( Math.floor( Math.abs( intPoint ) / l ) + 1 ) * l;\n\n\t} else if ( weight === 0 && intPoint === l - 1 ) {\n\n\t\tintPoint = l - 2;\n\t\tweight = 1;\n\n\t}\n\n\tlet p0, p3; // 4 points (p1 & p2 defined below)\n\n\tif ( this.closed || intPoint > 0 ) {\n\n\t\tp0 = points[ ( intPoint - 1 ) % l ];\n\n\t} else {\n\n\t\t// extrapolate first point\n\t\ttmp.subVectors( points[ 0 ], points[ 1 ] ).add( points[ 0 ] );\n\t\tp0 = tmp;\n\n\t}\n\n\tconst p1 = points[ intPoint % l ];\n\tconst p2 = points[ ( intPoint + 1 ) % l ];\n\n\tif ( this.closed || intPoint + 2 < l ) {\n\n\t\tp3 = points[ ( intPoint + 2 ) % l ];\n\n\t} else {\n\n\t\t// extrapolate last point\n\t\ttmp.subVectors( points[ l - 1 ], points[ l - 2 ] ).add( points[ l - 1 ] );\n\t\tp3 = tmp;\n\n\t}\n\n\tif ( this.curveType === 'centripetal' || this.curveType === 'chordal' ) {\n\n\t\t// init Centripetal / Chordal Catmull-Rom\n\t\tconst pow = this.curveType === 'chordal' ? 0.5 : 0.25;\n\t\tlet dt0 = Math.pow( p0.distanceToSquared( p1 ), pow );\n\t\tlet dt1 = Math.pow( p1.distanceToSquared( p2 ), pow );\n\t\tlet dt2 = Math.pow( p2.distanceToSquared( p3 ), pow );\n\n\t\t// safety check for repeated points\n\t\tif ( dt1 < 1e-4 ) dt1 = 1.0;\n\t\tif ( dt0 < 1e-4 ) dt0 = dt1;\n\t\tif ( dt2 < 1e-4 ) dt2 = dt1;\n\n\t\tpx.initNonuniformCatmullRom( p0.x, p1.x, p2.x, p3.x, dt0, dt1, dt2 );\n\t\tpy.initNonuniformCatmullRom( p0.y, p1.y, p2.y, p3.y, dt0, dt1, dt2 );\n\t\tpz.initNonuniformCatmullRom( p0.z, p1.z, p2.z, p3.z, dt0, dt1, dt2 );\n\n\t} else if ( this.curveType === 'catmullrom' ) {\n\n\t\tpx.initCatmullRom( p0.x, p1.x, p2.x, p3.x, this.tension );\n\t\tpy.initCatmullRom( p0.y, p1.y, p2.y, p3.y, this.tension );\n\t\tpz.initCatmullRom( p0.z, p1.z, p2.z, p3.z, this.tension );\n\n\t}\n\n\tpoint.set(\n\t\tpx.calc( weight ),\n\t\tpy.calc( weight ),\n\t\tpz.calc( weight )\n\t);\n\n\treturn point;\n\n};\n\nCatmullRomCurve3.prototype.copy = function ( source ) {\n\n\tCurve.prototype.copy.call( this, source );\n\n\tthis.points = [];\n\n\tfor ( let i = 0, l = source.points.length; i < l; i ++ ) {\n\n\t\tconst point = source.points[ i ];\n\n\t\tthis.points.push( point.clone() );\n\n\t}\n\n\tthis.closed = source.closed;\n\tthis.curveType = source.curveType;\n\tthis.tension = source.tension;\n\n\treturn this;\n\n};\n\nCatmullRomCurve3.prototype.toJSON = function () {\n\n\tconst data = Curve.prototype.toJSON.call( this );\n\n\tdata.points = [];\n\n\tfor ( let i = 0, l = this.points.length; i < l; i ++ ) {\n\n\t\tconst point = this.points[ i ];\n\t\tdata.points.push( point.toArray() );\n\n\t}\n\n\tdata.closed = this.closed;\n\tdata.curveType = this.curveType;\n\tdata.tension = this.tension;\n\n\treturn data;\n\n};\n\nCatmullRomCurve3.prototype.fromJSON = function ( json ) {\n\n\tCurve.prototype.fromJSON.call( this, json );\n\n\tthis.points = [];\n\n\tfor ( let i = 0, l = json.points.length; i < l; i ++ ) {\n\n\t\tconst point = json.points[ i ];\n\t\tthis.points.push( new Vector3().fromArray( point ) );\n\n\t}\n\n\tthis.closed = json.closed;\n\tthis.curveType = json.curveType;\n\tthis.tension = json.tension;\n\n\treturn this;\n\n};\n\n/**\n * Bezier Curves formulas obtained from\n * http://en.wikipedia.org/wiki/Bézier_curve\n */\n\nfunction CatmullRom( t, p0, p1, p2, p3 ) {\n\n\tconst v0 = ( p2 - p0 ) * 0.5;\n\tconst v1 = ( p3 - p1 ) * 0.5;\n\tconst t2 = t * t;\n\tconst t3 = t * t2;\n\treturn ( 2 * p1 - 2 * p2 + v0 + v1 ) * t3 + ( - 3 * p1 + 3 * p2 - 2 * v0 - v1 ) * t2 + v0 * t + p1;\n\n}\n\n//\n\nfunction QuadraticBezierP0( t, p ) {\n\n\tconst k = 1 - t;\n\treturn k * k * p;\n\n}\n\nfunction QuadraticBezierP1( t, p ) {\n\n\treturn 2 * ( 1 - t ) * t * p;\n\n}\n\nfunction QuadraticBezierP2( t, p ) {\n\n\treturn t * t * p;\n\n}\n\nfunction QuadraticBezier( t, p0, p1, p2 ) {\n\n\treturn QuadraticBezierP0( t, p0 ) + QuadraticBezierP1( t, p1 ) +\n\t\tQuadraticBezierP2( t, p2 );\n\n}\n\n//\n\nfunction CubicBezierP0( t, p ) {\n\n\tconst k = 1 - t;\n\treturn k * k * k * p;\n\n}\n\nfunction CubicBezierP1( t, p ) {\n\n\tconst k = 1 - t;\n\treturn 3 * k * k * t * p;\n\n}\n\nfunction CubicBezierP2( t, p ) {\n\n\treturn 3 * ( 1 - t ) * t * t * p;\n\n}\n\nfunction CubicBezierP3( t, p ) {\n\n\treturn t * t * t * p;\n\n}\n\nfunction CubicBezier( t, p0, p1, p2, p3 ) {\n\n\treturn CubicBezierP0( t, p0 ) + CubicBezierP1( t, p1 ) + CubicBezierP2( t, p2 ) +\n\t\tCubicBezierP3( t, p3 );\n\n}\n\nfunction CubicBezierCurve( v0 = new Vector2(), v1 = new Vector2(), v2 = new Vector2(), v3 = new Vector2() ) {\n\n\tCurve.call( this );\n\n\tthis.type = 'CubicBezierCurve';\n\n\tthis.v0 = v0;\n\tthis.v1 = v1;\n\tthis.v2 = v2;\n\tthis.v3 = v3;\n\n}\n\nCubicBezierCurve.prototype = Object.create( Curve.prototype );\nCubicBezierCurve.prototype.constructor = CubicBezierCurve;\n\nCubicBezierCurve.prototype.isCubicBezierCurve = true;\n\nCubicBezierCurve.prototype.getPoint = function ( t, optionalTarget = new Vector2() ) {\n\n\tconst point = optionalTarget;\n\n\tconst v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;\n\n\tpoint.set(\n\t\tCubicBezier( t, v0.x, v1.x, v2.x, v3.x ),\n\t\tCubicBezier( t, v0.y, v1.y, v2.y, v3.y )\n\t);\n\n\treturn point;\n\n};\n\nCubicBezierCurve.prototype.copy = function ( source ) {\n\n\tCurve.prototype.copy.call( this, source );\n\n\tthis.v0.copy( source.v0 );\n\tthis.v1.copy( source.v1 );\n\tthis.v2.copy( source.v2 );\n\tthis.v3.copy( source.v3 );\n\n\treturn this;\n\n};\n\nCubicBezierCurve.prototype.toJSON = function () {\n\n\tconst data = Curve.prototype.toJSON.call( this );\n\n\tdata.v0 = this.v0.toArray();\n\tdata.v1 = this.v1.toArray();\n\tdata.v2 = this.v2.toArray();\n\tdata.v3 = this.v3.toArray();\n\n\treturn data;\n\n};\n\nCubicBezierCurve.prototype.fromJSON = function ( json ) {\n\n\tCurve.prototype.fromJSON.call( this, json );\n\n\tthis.v0.fromArray( json.v0 );\n\tthis.v1.fromArray( json.v1 );\n\tthis.v2.fromArray( json.v2 );\n\tthis.v3.fromArray( json.v3 );\n\n\treturn this;\n\n};\n\nfunction CubicBezierCurve3( v0 = new Vector3(), v1 = new Vector3(), v2 = new Vector3(), v3 = new Vector3() ) {\n\n\tCurve.call( this );\n\n\tthis.type = 'CubicBezierCurve3';\n\n\tthis.v0 = v0;\n\tthis.v1 = v1;\n\tthis.v2 = v2;\n\tthis.v3 = v3;\n\n}\n\nCubicBezierCurve3.prototype = Object.create( Curve.prototype );\nCubicBezierCurve3.prototype.constructor = CubicBezierCurve3;\n\nCubicBezierCurve3.prototype.isCubicBezierCurve3 = true;\n\nCubicBezierCurve3.prototype.getPoint = function ( t, optionalTarget = new Vector3() ) {\n\n\tconst point = optionalTarget;\n\n\tconst v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;\n\n\tpoint.set(\n\t\tCubicBezier( t, v0.x, v1.x, v2.x, v3.x ),\n\t\tCubicBezier( t, v0.y, v1.y, v2.y, v3.y ),\n\t\tCubicBezier( t, v0.z, v1.z, v2.z, v3.z )\n\t);\n\n\treturn point;\n\n};\n\nCubicBezierCurve3.prototype.copy = function ( source ) {\n\n\tCurve.prototype.copy.call( this, source );\n\n\tthis.v0.copy( source.v0 );\n\tthis.v1.copy( source.v1 );\n\tthis.v2.copy( source.v2 );\n\tthis.v3.copy( source.v3 );\n\n\treturn this;\n\n};\n\nCubicBezierCurve3.prototype.toJSON = function () {\n\n\tconst data = Curve.prototype.toJSON.call( this );\n\n\tdata.v0 = this.v0.toArray();\n\tdata.v1 = this.v1.toArray();\n\tdata.v2 = this.v2.toArray();\n\tdata.v3 = this.v3.toArray();\n\n\treturn data;\n\n};\n\nCubicBezierCurve3.prototype.fromJSON = function ( json ) {\n\n\tCurve.prototype.fromJSON.call( this, json );\n\n\tthis.v0.fromArray( json.v0 );\n\tthis.v1.fromArray( json.v1 );\n\tthis.v2.fromArray( json.v2 );\n\tthis.v3.fromArray( json.v3 );\n\n\treturn this;\n\n};\n\nfunction LineCurve( v1 = new Vector2(), v2 = new Vector2() ) {\n\n\tCurve.call( this );\n\n\tthis.type = 'LineCurve';\n\n\tthis.v1 = v1;\n\tthis.v2 = v2;\n\n}\n\nLineCurve.prototype = Object.create( Curve.prototype );\nLineCurve.prototype.constructor = LineCurve;\n\nLineCurve.prototype.isLineCurve = true;\n\nLineCurve.prototype.getPoint = function ( t, optionalTarget = new Vector2() ) {\n\n\tconst point = optionalTarget;\n\n\tif ( t === 1 ) {\n\n\t\tpoint.copy( this.v2 );\n\n\t} else {\n\n\t\tpoint.copy( this.v2 ).sub( this.v1 );\n\t\tpoint.multiplyScalar( t ).add( this.v1 );\n\n\t}\n\n\treturn point;\n\n};\n\n// Line curve is linear, so we can overwrite default getPointAt\n\nLineCurve.prototype.getPointAt = function ( u, optionalTarget ) {\n\n\treturn this.getPoint( u, optionalTarget );\n\n};\n\nLineCurve.prototype.getTangent = function ( t, optionalTarget ) {\n\n\tconst tangent = optionalTarget || new Vector2();\n\n\ttangent.copy( this.v2 ).sub( this.v1 ).normalize();\n\n\treturn tangent;\n\n};\n\nLineCurve.prototype.copy = function ( source ) {\n\n\tCurve.prototype.copy.call( this, source );\n\n\tthis.v1.copy( source.v1 );\n\tthis.v2.copy( source.v2 );\n\n\treturn this;\n\n};\n\nLineCurve.prototype.toJSON = function () {\n\n\tconst data = Curve.prototype.toJSON.call( this );\n\n\tdata.v1 = this.v1.toArray();\n\tdata.v2 = this.v2.toArray();\n\n\treturn data;\n\n};\n\nLineCurve.prototype.fromJSON = function ( json ) {\n\n\tCurve.prototype.fromJSON.call( this, json );\n\n\tthis.v1.fromArray( json.v1 );\n\tthis.v2.fromArray( json.v2 );\n\n\treturn this;\n\n};\n\nfunction LineCurve3( v1 = new Vector3(), v2 = new Vector3() ) {\n\n\tCurve.call( this );\n\n\tthis.type = 'LineCurve3';\n\n\tthis.v1 = v1;\n\tthis.v2 = v2;\n\n}\n\nLineCurve3.prototype = Object.create( Curve.prototype );\nLineCurve3.prototype.constructor = LineCurve3;\n\nLineCurve3.prototype.isLineCurve3 = true;\n\nLineCurve3.prototype.getPoint = function ( t, optionalTarget = new Vector3() ) {\n\n\tconst point = optionalTarget;\n\n\tif ( t === 1 ) {\n\n\t\tpoint.copy( this.v2 );\n\n\t} else {\n\n\t\tpoint.copy( this.v2 ).sub( this.v1 );\n\t\tpoint.multiplyScalar( t ).add( this.v1 );\n\n\t}\n\n\treturn point;\n\n};\n\n// Line curve is linear, so we can overwrite default getPointAt\n\nLineCurve3.prototype.getPointAt = function ( u, optionalTarget ) {\n\n\treturn this.getPoint( u, optionalTarget );\n\n};\n\nLineCurve3.prototype.copy = function ( source ) {\n\n\tCurve.prototype.copy.call( this, source );\n\n\tthis.v1.copy( source.v1 );\n\tthis.v2.copy( source.v2 );\n\n\treturn this;\n\n};\n\nLineCurve3.prototype.toJSON = function () {\n\n\tconst data = Curve.prototype.toJSON.call( this );\n\n\tdata.v1 = this.v1.toArray();\n\tdata.v2 = this.v2.toArray();\n\n\treturn data;\n\n};\n\nLineCurve3.prototype.fromJSON = function ( json ) {\n\n\tCurve.prototype.fromJSON.call( this, json );\n\n\tthis.v1.fromArray( json.v1 );\n\tthis.v2.fromArray( json.v2 );\n\n\treturn this;\n\n};\n\nfunction QuadraticBezierCurve( v0 = new Vector2(), v1 = new Vector2(), v2 = new Vector2() ) {\n\n\tCurve.call( this );\n\n\tthis.type = 'QuadraticBezierCurve';\n\n\tthis.v0 = v0;\n\tthis.v1 = v1;\n\tthis.v2 = v2;\n\n}\n\nQuadraticBezierCurve.prototype = Object.create( Curve.prototype );\nQuadraticBezierCurve.prototype.constructor = QuadraticBezierCurve;\n\nQuadraticBezierCurve.prototype.isQuadraticBezierCurve = true;\n\nQuadraticBezierCurve.prototype.getPoint = function ( t, optionalTarget = new Vector2() ) {\n\n\tconst point = optionalTarget;\n\n\tconst v0 = this.v0, v1 = this.v1, v2 = this.v2;\n\n\tpoint.set(\n\t\tQuadraticBezier( t, v0.x, v1.x, v2.x ),\n\t\tQuadraticBezier( t, v0.y, v1.y, v2.y )\n\t);\n\n\treturn point;\n\n};\n\nQuadraticBezierCurve.prototype.copy = function ( source ) {\n\n\tCurve.prototype.copy.call( this, source );\n\n\tthis.v0.copy( source.v0 );\n\tthis.v1.copy( source.v1 );\n\tthis.v2.copy( source.v2 );\n\n\treturn this;\n\n};\n\nQuadraticBezierCurve.prototype.toJSON = function () {\n\n\tconst data = Curve.prototype.toJSON.call( this );\n\n\tdata.v0 = this.v0.toArray();\n\tdata.v1 = this.v1.toArray();\n\tdata.v2 = this.v2.toArray();\n\n\treturn data;\n\n};\n\nQuadraticBezierCurve.prototype.fromJSON = function ( json ) {\n\n\tCurve.prototype.fromJSON.call( this, json );\n\n\tthis.v0.fromArray( json.v0 );\n\tthis.v1.fromArray( json.v1 );\n\tthis.v2.fromArray( json.v2 );\n\n\treturn this;\n\n};\n\nfunction QuadraticBezierCurve3( v0 = new Vector3(), v1 = new Vector3(), v2 = new Vector3() ) {\n\n\tCurve.call( this );\n\n\tthis.type = 'QuadraticBezierCurve3';\n\n\tthis.v0 = v0;\n\tthis.v1 = v1;\n\tthis.v2 = v2;\n\n}\n\nQuadraticBezierCurve3.prototype = Object.create( Curve.prototype );\nQuadraticBezierCurve3.prototype.constructor = QuadraticBezierCurve3;\n\nQuadraticBezierCurve3.prototype.isQuadraticBezierCurve3 = true;\n\nQuadraticBezierCurve3.prototype.getPoint = function ( t, optionalTarget = new Vector3() ) {\n\n\tconst point = optionalTarget;\n\n\tconst v0 = this.v0, v1 = this.v1, v2 = this.v2;\n\n\tpoint.set(\n\t\tQuadraticBezier( t, v0.x, v1.x, v2.x ),\n\t\tQuadraticBezier( t, v0.y, v1.y, v2.y ),\n\t\tQuadraticBezier( t, v0.z, v1.z, v2.z )\n\t);\n\n\treturn point;\n\n};\n\nQuadraticBezierCurve3.prototype.copy = function ( source ) {\n\n\tCurve.prototype.copy.call( this, source );\n\n\tthis.v0.copy( source.v0 );\n\tthis.v1.copy( source.v1 );\n\tthis.v2.copy( source.v2 );\n\n\treturn this;\n\n};\n\nQuadraticBezierCurve3.prototype.toJSON = function () {\n\n\tconst data = Curve.prototype.toJSON.call( this );\n\n\tdata.v0 = this.v0.toArray();\n\tdata.v1 = this.v1.toArray();\n\tdata.v2 = this.v2.toArray();\n\n\treturn data;\n\n};\n\nQuadraticBezierCurve3.prototype.fromJSON = function ( json ) {\n\n\tCurve.prototype.fromJSON.call( this, json );\n\n\tthis.v0.fromArray( json.v0 );\n\tthis.v1.fromArray( json.v1 );\n\tthis.v2.fromArray( json.v2 );\n\n\treturn this;\n\n};\n\nfunction SplineCurve( points = [] ) {\n\n\tCurve.call( this );\n\n\tthis.type = 'SplineCurve';\n\n\tthis.points = points;\n\n}\n\nSplineCurve.prototype = Object.create( Curve.prototype );\nSplineCurve.prototype.constructor = SplineCurve;\n\nSplineCurve.prototype.isSplineCurve = true;\n\nSplineCurve.prototype.getPoint = function ( t, optionalTarget = new Vector2() ) {\n\n\tconst point = optionalTarget;\n\n\tconst points = this.points;\n\tconst p = ( points.length - 1 ) * t;\n\n\tconst intPoint = Math.floor( p );\n\tconst weight = p - intPoint;\n\n\tconst p0 = points[ intPoint === 0 ? intPoint : intPoint - 1 ];\n\tconst p1 = points[ intPoint ];\n\tconst p2 = points[ intPoint > points.length - 2 ? points.length - 1 : intPoint + 1 ];\n\tconst p3 = points[ intPoint > points.length - 3 ? points.length - 1 : intPoint + 2 ];\n\n\tpoint.set(\n\t\tCatmullRom( weight, p0.x, p1.x, p2.x, p3.x ),\n\t\tCatmullRom( weight, p0.y, p1.y, p2.y, p3.y )\n\t);\n\n\treturn point;\n\n};\n\nSplineCurve.prototype.copy = function ( source ) {\n\n\tCurve.prototype.copy.call( this, source );\n\n\tthis.points = [];\n\n\tfor ( let i = 0, l = source.points.length; i < l; i ++ ) {\n\n\t\tconst point = source.points[ i ];\n\n\t\tthis.points.push( point.clone() );\n\n\t}\n\n\treturn this;\n\n};\n\nSplineCurve.prototype.toJSON = function () {\n\n\tconst data = Curve.prototype.toJSON.call( this );\n\n\tdata.points = [];\n\n\tfor ( let i = 0, l = this.points.length; i < l; i ++ ) {\n\n\t\tconst point = this.points[ i ];\n\t\tdata.points.push( point.toArray() );\n\n\t}\n\n\treturn data;\n\n};\n\nSplineCurve.prototype.fromJSON = function ( json ) {\n\n\tCurve.prototype.fromJSON.call( this, json );\n\n\tthis.points = [];\n\n\tfor ( let i = 0, l = json.points.length; i < l; i ++ ) {\n\n\t\tconst point = json.points[ i ];\n\t\tthis.points.push( new Vector2().fromArray( point ) );\n\n\t}\n\n\treturn this;\n\n};\n\nvar Curves = /*#__PURE__*/Object.freeze({\n\t__proto__: null,\n\tArcCurve: ArcCurve,\n\tCatmullRomCurve3: CatmullRomCurve3,\n\tCubicBezierCurve: CubicBezierCurve,\n\tCubicBezierCurve3: CubicBezierCurve3,\n\tEllipseCurve: EllipseCurve,\n\tLineCurve: LineCurve,\n\tLineCurve3: LineCurve3,\n\tQuadraticBezierCurve: QuadraticBezierCurve,\n\tQuadraticBezierCurve3: QuadraticBezierCurve3,\n\tSplineCurve: SplineCurve\n});\n\n/**************************************************************\n *\tCurved Path - a curve path is simply a array of connected\n *  curves, but retains the api of a curve\n **************************************************************/\n\nfunction CurvePath() {\n\n\tCurve.call( this );\n\n\tthis.type = 'CurvePath';\n\n\tthis.curves = [];\n\tthis.autoClose = false; // Automatically closes the path\n\n}\n\nCurvePath.prototype = Object.assign( Object.create( Curve.prototype ), {\n\n\tconstructor: CurvePath,\n\n\tadd: function ( curve ) {\n\n\t\tthis.curves.push( curve );\n\n\t},\n\n\tclosePath: function () {\n\n\t\t// Add a line curve if start and end of lines are not connected\n\t\tconst startPoint = this.curves[ 0 ].getPoint( 0 );\n\t\tconst endPoint = this.curves[ this.curves.length - 1 ].getPoint( 1 );\n\n\t\tif ( ! startPoint.equals( endPoint ) ) {\n\n\t\t\tthis.curves.push( new LineCurve( endPoint, startPoint ) );\n\n\t\t}\n\n\t},\n\n\t// To get accurate point with reference to\n\t// entire path distance at time t,\n\t// following has to be done:\n\n\t// 1. Length of each sub path have to be known\n\t// 2. Locate and identify type of curve\n\t// 3. Get t for the curve\n\t// 4. Return curve.getPointAt(t')\n\n\tgetPoint: function ( t ) {\n\n\t\tconst d = t * this.getLength();\n\t\tconst curveLengths = this.getCurveLengths();\n\t\tlet i = 0;\n\n\t\t// To think about boundaries points.\n\n\t\twhile ( i < curveLengths.length ) {\n\n\t\t\tif ( curveLengths[ i ] >= d ) {\n\n\t\t\t\tconst diff = curveLengths[ i ] - d;\n\t\t\t\tconst curve = this.curves[ i ];\n\n\t\t\t\tconst segmentLength = curve.getLength();\n\t\t\t\tconst u = segmentLength === 0 ? 0 : 1 - diff / segmentLength;\n\n\t\t\t\treturn curve.getPointAt( u );\n\n\t\t\t}\n\n\t\t\ti ++;\n\n\t\t}\n\n\t\treturn null;\n\n\t\t// loop where sum != 0, sum > d , sum+1 <d\n\n\t},\n\n\t// We cannot use the default THREE.Curve getPoint() with getLength() because in\n\t// THREE.Curve, getLength() depends on getPoint() but in THREE.CurvePath\n\t// getPoint() depends on getLength\n\n\tgetLength: function () {\n\n\t\tconst lens = this.getCurveLengths();\n\t\treturn lens[ lens.length - 1 ];\n\n\t},\n\n\t// cacheLengths must be recalculated.\n\tupdateArcLengths: function () {\n\n\t\tthis.needsUpdate = true;\n\t\tthis.cacheLengths = null;\n\t\tthis.getCurveLengths();\n\n\t},\n\n\t// Compute lengths and cache them\n\t// We cannot overwrite getLengths() because UtoT mapping uses it.\n\n\tgetCurveLengths: function () {\n\n\t\t// We use cache values if curves and cache array are same length\n\n\t\tif ( this.cacheLengths && this.cacheLengths.length === this.curves.length ) {\n\n\t\t\treturn this.cacheLengths;\n\n\t\t}\n\n\t\t// Get length of sub-curve\n\t\t// Push sums into cached array\n\n\t\tconst lengths = [];\n\t\tlet sums = 0;\n\n\t\tfor ( let i = 0, l = this.curves.length; i < l; i ++ ) {\n\n\t\t\tsums += this.curves[ i ].getLength();\n\t\t\tlengths.push( sums );\n\n\t\t}\n\n\t\tthis.cacheLengths = lengths;\n\n\t\treturn lengths;\n\n\t},\n\n\tgetSpacedPoints: function ( divisions = 40 ) {\n\n\t\tconst points = [];\n\n\t\tfor ( let i = 0; i <= divisions; i ++ ) {\n\n\t\t\tpoints.push( this.getPoint( i / divisions ) );\n\n\t\t}\n\n\t\tif ( this.autoClose ) {\n\n\t\t\tpoints.push( points[ 0 ] );\n\n\t\t}\n\n\t\treturn points;\n\n\t},\n\n\tgetPoints: function ( divisions = 12 ) {\n\n\t\tconst points = [];\n\t\tlet last;\n\n\t\tfor ( let i = 0, curves = this.curves; i < curves.length; i ++ ) {\n\n\t\t\tconst curve = curves[ i ];\n\t\t\tconst resolution = ( curve && curve.isEllipseCurve ) ? divisions * 2\n\t\t\t\t: ( curve && ( curve.isLineCurve || curve.isLineCurve3 ) ) ? 1\n\t\t\t\t\t: ( curve && curve.isSplineCurve ) ? divisions * curve.points.length\n\t\t\t\t\t\t: divisions;\n\n\t\t\tconst pts = curve.getPoints( resolution );\n\n\t\t\tfor ( let j = 0; j < pts.length; j ++ ) {\n\n\t\t\t\tconst point = pts[ j ];\n\n\t\t\t\tif ( last && last.equals( point ) ) continue; // ensures no consecutive points are duplicates\n\n\t\t\t\tpoints.push( point );\n\t\t\t\tlast = point;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( this.autoClose && points.length > 1 && ! points[ points.length - 1 ].equals( points[ 0 ] ) ) {\n\n\t\t\tpoints.push( points[ 0 ] );\n\n\t\t}\n\n\t\treturn points;\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\tCurve.prototype.copy.call( this, source );\n\n\t\tthis.curves = [];\n\n\t\tfor ( let i = 0, l = source.curves.length; i < l; i ++ ) {\n\n\t\t\tconst curve = source.curves[ i ];\n\n\t\t\tthis.curves.push( curve.clone() );\n\n\t\t}\n\n\t\tthis.autoClose = source.autoClose;\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function () {\n\n\t\tconst data = Curve.prototype.toJSON.call( this );\n\n\t\tdata.autoClose = this.autoClose;\n\t\tdata.curves = [];\n\n\t\tfor ( let i = 0, l = this.curves.length; i < l; i ++ ) {\n\n\t\t\tconst curve = this.curves[ i ];\n\t\t\tdata.curves.push( curve.toJSON() );\n\n\t\t}\n\n\t\treturn data;\n\n\t},\n\n\tfromJSON: function ( json ) {\n\n\t\tCurve.prototype.fromJSON.call( this, json );\n\n\t\tthis.autoClose = json.autoClose;\n\t\tthis.curves = [];\n\n\t\tfor ( let i = 0, l = json.curves.length; i < l; i ++ ) {\n\n\t\t\tconst curve = json.curves[ i ];\n\t\t\tthis.curves.push( new Curves[ curve.type ]().fromJSON( curve ) );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n} );\n\nfunction Path( points ) {\n\n\tCurvePath.call( this );\n\n\tthis.type = 'Path';\n\n\tthis.currentPoint = new Vector2();\n\n\tif ( points ) {\n\n\t\tthis.setFromPoints( points );\n\n\t}\n\n}\n\nPath.prototype = Object.assign( Object.create( CurvePath.prototype ), {\n\n\tconstructor: Path,\n\n\tsetFromPoints: function ( points ) {\n\n\t\tthis.moveTo( points[ 0 ].x, points[ 0 ].y );\n\n\t\tfor ( let i = 1, l = points.length; i < l; i ++ ) {\n\n\t\t\tthis.lineTo( points[ i ].x, points[ i ].y );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\tmoveTo: function ( x, y ) {\n\n\t\tthis.currentPoint.set( x, y ); // TODO consider referencing vectors instead of copying?\n\n\t\treturn this;\n\n\t},\n\n\tlineTo: function ( x, y ) {\n\n\t\tconst curve = new LineCurve( this.currentPoint.clone(), new Vector2( x, y ) );\n\t\tthis.curves.push( curve );\n\n\t\tthis.currentPoint.set( x, y );\n\n\t\treturn this;\n\n\t},\n\n\tquadraticCurveTo: function ( aCPx, aCPy, aX, aY ) {\n\n\t\tconst curve = new QuadraticBezierCurve(\n\t\t\tthis.currentPoint.clone(),\n\t\t\tnew Vector2( aCPx, aCPy ),\n\t\t\tnew Vector2( aX, aY )\n\t\t);\n\n\t\tthis.curves.push( curve );\n\n\t\tthis.currentPoint.set( aX, aY );\n\n\t\treturn this;\n\n\t},\n\n\tbezierCurveTo: function ( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY ) {\n\n\t\tconst curve = new CubicBezierCurve(\n\t\t\tthis.currentPoint.clone(),\n\t\t\tnew Vector2( aCP1x, aCP1y ),\n\t\t\tnew Vector2( aCP2x, aCP2y ),\n\t\t\tnew Vector2( aX, aY )\n\t\t);\n\n\t\tthis.curves.push( curve );\n\n\t\tthis.currentPoint.set( aX, aY );\n\n\t\treturn this;\n\n\t},\n\n\tsplineThru: function ( pts /*Array of Vector*/ ) {\n\n\t\tconst npts = [ this.currentPoint.clone() ].concat( pts );\n\n\t\tconst curve = new SplineCurve( npts );\n\t\tthis.curves.push( curve );\n\n\t\tthis.currentPoint.copy( pts[ pts.length - 1 ] );\n\n\t\treturn this;\n\n\t},\n\n\tarc: function ( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {\n\n\t\tconst x0 = this.currentPoint.x;\n\t\tconst y0 = this.currentPoint.y;\n\n\t\tthis.absarc( aX + x0, aY + y0, aRadius,\n\t\t\taStartAngle, aEndAngle, aClockwise );\n\n\t\treturn this;\n\n\t},\n\n\tabsarc: function ( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {\n\n\t\tthis.absellipse( aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise );\n\n\t\treturn this;\n\n\t},\n\n\tellipse: function ( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {\n\n\t\tconst x0 = this.currentPoint.x;\n\t\tconst y0 = this.currentPoint.y;\n\n\t\tthis.absellipse( aX + x0, aY + y0, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation );\n\n\t\treturn this;\n\n\t},\n\n\tabsellipse: function ( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {\n\n\t\tconst curve = new EllipseCurve( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation );\n\n\t\tif ( this.curves.length > 0 ) {\n\n\t\t\t// if a previous curve is present, attempt to join\n\t\t\tconst firstPoint = curve.getPoint( 0 );\n\n\t\t\tif ( ! firstPoint.equals( this.currentPoint ) ) {\n\n\t\t\t\tthis.lineTo( firstPoint.x, firstPoint.y );\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis.curves.push( curve );\n\n\t\tconst lastPoint = curve.getPoint( 1 );\n\t\tthis.currentPoint.copy( lastPoint );\n\n\t\treturn this;\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\tCurvePath.prototype.copy.call( this, source );\n\n\t\tthis.currentPoint.copy( source.currentPoint );\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function () {\n\n\t\tconst data = CurvePath.prototype.toJSON.call( this );\n\n\t\tdata.currentPoint = this.currentPoint.toArray();\n\n\t\treturn data;\n\n\t},\n\n\tfromJSON: function ( json ) {\n\n\t\tCurvePath.prototype.fromJSON.call( this, json );\n\n\t\tthis.currentPoint.fromArray( json.currentPoint );\n\n\t\treturn this;\n\n\t}\n\n} );\n\nfunction Shape( points ) {\n\n\tPath.call( this, points );\n\n\tthis.uuid = MathUtils.generateUUID();\n\n\tthis.type = 'Shape';\n\n\tthis.holes = [];\n\n}\n\nShape.prototype = Object.assign( Object.create( Path.prototype ), {\n\n\tconstructor: Shape,\n\n\tgetPointsHoles: function ( divisions ) {\n\n\t\tconst holesPts = [];\n\n\t\tfor ( let i = 0, l = this.holes.length; i < l; i ++ ) {\n\n\t\t\tholesPts[ i ] = this.holes[ i ].getPoints( divisions );\n\n\t\t}\n\n\t\treturn holesPts;\n\n\t},\n\n\t// get points of shape and holes (keypoints based on segments parameter)\n\n\textractPoints: function ( divisions ) {\n\n\t\treturn {\n\n\t\t\tshape: this.getPoints( divisions ),\n\t\t\tholes: this.getPointsHoles( divisions )\n\n\t\t};\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\tPath.prototype.copy.call( this, source );\n\n\t\tthis.holes = [];\n\n\t\tfor ( let i = 0, l = source.holes.length; i < l; i ++ ) {\n\n\t\t\tconst hole = source.holes[ i ];\n\n\t\t\tthis.holes.push( hole.clone() );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function () {\n\n\t\tconst data = Path.prototype.toJSON.call( this );\n\n\t\tdata.uuid = this.uuid;\n\t\tdata.holes = [];\n\n\t\tfor ( let i = 0, l = this.holes.length; i < l; i ++ ) {\n\n\t\t\tconst hole = this.holes[ i ];\n\t\t\tdata.holes.push( hole.toJSON() );\n\n\t\t}\n\n\t\treturn data;\n\n\t},\n\n\tfromJSON: function ( json ) {\n\n\t\tPath.prototype.fromJSON.call( this, json );\n\n\t\tthis.uuid = json.uuid;\n\t\tthis.holes = [];\n\n\t\tfor ( let i = 0, l = json.holes.length; i < l; i ++ ) {\n\n\t\t\tconst hole = json.holes[ i ];\n\t\t\tthis.holes.push( new Path().fromJSON( hole ) );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n} );\n\nfunction Light( color, intensity = 1 ) {\n\n\tObject3D.call( this );\n\n\tthis.type = 'Light';\n\n\tthis.color = new Color( color );\n\tthis.intensity = intensity;\n\n}\n\nLight.prototype = Object.assign( Object.create( Object3D.prototype ), {\n\n\tconstructor: Light,\n\n\tisLight: true,\n\n\tcopy: function ( source ) {\n\n\t\tObject3D.prototype.copy.call( this, source );\n\n\t\tthis.color.copy( source.color );\n\t\tthis.intensity = source.intensity;\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function ( meta ) {\n\n\t\tconst data = Object3D.prototype.toJSON.call( this, meta );\n\n\t\tdata.object.color = this.color.getHex();\n\t\tdata.object.intensity = this.intensity;\n\n\t\tif ( this.groundColor !== undefined ) data.object.groundColor = this.groundColor.getHex();\n\n\t\tif ( this.distance !== undefined ) data.object.distance = this.distance;\n\t\tif ( this.angle !== undefined ) data.object.angle = this.angle;\n\t\tif ( this.decay !== undefined ) data.object.decay = this.decay;\n\t\tif ( this.penumbra !== undefined ) data.object.penumbra = this.penumbra;\n\n\t\tif ( this.shadow !== undefined ) data.object.shadow = this.shadow.toJSON();\n\n\t\treturn data;\n\n\t}\n\n} );\n\nfunction HemisphereLight( skyColor, groundColor, intensity ) {\n\n\tLight.call( this, skyColor, intensity );\n\n\tthis.type = 'HemisphereLight';\n\n\tthis.position.copy( Object3D.DefaultUp );\n\tthis.updateMatrix();\n\n\tthis.groundColor = new Color( groundColor );\n\n}\n\nHemisphereLight.prototype = Object.assign( Object.create( Light.prototype ), {\n\n\tconstructor: HemisphereLight,\n\n\tisHemisphereLight: true,\n\n\tcopy: function ( source ) {\n\n\t\tLight.prototype.copy.call( this, source );\n\n\t\tthis.groundColor.copy( source.groundColor );\n\n\t\treturn this;\n\n\t}\n\n} );\n\nfunction LightShadow( camera ) {\n\n\tthis.camera = camera;\n\n\tthis.bias = 0;\n\tthis.normalBias = 0;\n\tthis.radius = 1;\n\n\tthis.mapSize = new Vector2( 512, 512 );\n\n\tthis.map = null;\n\tthis.mapPass = null;\n\tthis.matrix = new Matrix4();\n\n\tthis.autoUpdate = true;\n\tthis.needsUpdate = false;\n\n\tthis._frustum = new Frustum();\n\tthis._frameExtents = new Vector2( 1, 1 );\n\n\tthis._viewportCount = 1;\n\n\tthis._viewports = [\n\n\t\tnew Vector4( 0, 0, 1, 1 )\n\n\t];\n\n}\n\nObject.assign( LightShadow.prototype, {\n\n\t_projScreenMatrix: new Matrix4(),\n\n\t_lightPositionWorld: new Vector3(),\n\n\t_lookTarget: new Vector3(),\n\n\tgetViewportCount: function () {\n\n\t\treturn this._viewportCount;\n\n\t},\n\n\tgetFrustum: function () {\n\n\t\treturn this._frustum;\n\n\t},\n\n\tupdateMatrices: function ( light ) {\n\n\t\tconst shadowCamera = this.camera,\n\t\t\tshadowMatrix = this.matrix,\n\t\t\tprojScreenMatrix = this._projScreenMatrix,\n\t\t\tlookTarget = this._lookTarget,\n\t\t\tlightPositionWorld = this._lightPositionWorld;\n\n\t\tlightPositionWorld.setFromMatrixPosition( light.matrixWorld );\n\t\tshadowCamera.position.copy( lightPositionWorld );\n\n\t\tlookTarget.setFromMatrixPosition( light.target.matrixWorld );\n\t\tshadowCamera.lookAt( lookTarget );\n\t\tshadowCamera.updateMatrixWorld();\n\n\t\tprojScreenMatrix.multiplyMatrices( shadowCamera.projectionMatrix, shadowCamera.matrixWorldInverse );\n\t\tthis._frustum.setFromProjectionMatrix( projScreenMatrix );\n\n\t\tshadowMatrix.set(\n\t\t\t0.5, 0.0, 0.0, 0.5,\n\t\t\t0.0, 0.5, 0.0, 0.5,\n\t\t\t0.0, 0.0, 0.5, 0.5,\n\t\t\t0.0, 0.0, 0.0, 1.0\n\t\t);\n\n\t\tshadowMatrix.multiply( shadowCamera.projectionMatrix );\n\t\tshadowMatrix.multiply( shadowCamera.matrixWorldInverse );\n\n\t},\n\n\tgetViewport: function ( viewportIndex ) {\n\n\t\treturn this._viewports[ viewportIndex ];\n\n\t},\n\n\tgetFrameExtents: function () {\n\n\t\treturn this._frameExtents;\n\n\t},\n\n\tcopy: function ( source ) {\n\n\t\tthis.camera = source.camera.clone();\n\n\t\tthis.bias = source.bias;\n\t\tthis.radius = source.radius;\n\n\t\tthis.mapSize.copy( source.mapSize );\n\n\t\treturn this;\n\n\t},\n\n\tclone: function () {\n\n\t\treturn new this.constructor().copy( this );\n\n\t},\n\n\ttoJSON: function () {\n\n\t\tconst object = {};\n\n\t\tif ( this.bias !== 0 ) object.bias = this.bias;\n\t\tif ( this.normalBias !== 0 ) object.normalBias = this.normalBias;\n\t\tif ( this.radius !== 1 ) object.radius = this.radius;\n\t\tif ( this.mapSize.x !== 512 || this.mapSize.y !== 512 ) object.mapSize = this.mapSize.toArray();\n\n\t\tobject.camera = this.camera.toJSON( false ).object;\n\t\tdelete object.camera.matrix;\n\n\t\treturn object;\n\n\t}\n\n} );\n\nfunction SpotLightShadow() {\n\n\tLightShadow.call( this, new PerspectiveCamera( 50, 1, 0.5, 500 ) );\n\n\tthis.focus = 1;\n\n}\n\nSpotLightShadow.prototype = Object.assign( Object.create( LightShadow.prototype ), {\n\n\tconstructor: SpotLightShadow,\n\n\tisSpotLightShadow: true,\n\n\tupdateMatrices: function ( light ) {\n\n\t\tconst camera = this.camera;\n\n\t\tconst fov = MathUtils.RAD2DEG * 2 * light.angle * this.focus;\n\t\tconst aspect = this.mapSize.width / this.mapSize.height;\n\t\tconst far = light.distance || camera.far;\n\n\t\tif ( fov !== camera.fov || aspect !== camera.aspect || far !== camera.far ) {\n\n\t\t\tcamera.fov = fov;\n\t\t\tcamera.aspect = aspect;\n\t\t\tcamera.far = far;\n\t\t\tcamera.updateProjectionMatrix();\n\n\t\t}\n\n\t\tLightShadow.prototype.updateMatrices.call( this, light );\n\n\t}\n\n} );\n\nfunction SpotLight( color, intensity, distance, angle, penumbra, decay ) {\n\n\tLight.call( this, color, intensity );\n\n\tthis.type = 'SpotLight';\n\n\tthis.position.copy( Object3D.DefaultUp );\n\tthis.updateMatrix();\n\n\tthis.target = new Object3D();\n\n\tObject.defineProperty( this, 'power', {\n\t\tget: function () {\n\n\t\t\t// intensity = power per solid angle.\n\t\t\t// ref: equation (17) from https://seblagarde.files.wordpress.com/2015/07/course_notes_moving_frostbite_to_pbr_v32.pdf\n\t\t\treturn this.intensity * Math.PI;\n\n\t\t},\n\t\tset: function ( power ) {\n\n\t\t\t// intensity = power per solid angle.\n\t\t\t// ref: equation (17) from https://seblagarde.files.wordpress.com/2015/07/course_notes_moving_frostbite_to_pbr_v32.pdf\n\t\t\tthis.intensity = power / Math.PI;\n\n\t\t}\n\t} );\n\n\tthis.distance = ( distance !== undefined ) ? distance : 0;\n\tthis.angle = ( angle !== undefined ) ? angle : Math.PI / 3;\n\tthis.penumbra = ( penumbra !== undefined ) ? penumbra : 0;\n\tthis.decay = ( decay !== undefined ) ? decay : 1;\t// for physically correct lights, should be 2.\n\n\tthis.shadow = new SpotLightShadow();\n\n}\n\nSpotLight.prototype = Object.assign( Object.create( Light.prototype ), {\n\n\tconstructor: SpotLight,\n\n\tisSpotLight: true,\n\n\tcopy: function ( source ) {\n\n\t\tLight.prototype.copy.call( this, source );\n\n\t\tthis.distance = source.distance;\n\t\tthis.angle = source.angle;\n\t\tthis.penumbra = source.penumbra;\n\t\tthis.decay = source.decay;\n\n\t\tthis.target = source.target.clone();\n\n\t\tthis.shadow = source.shadow.clone();\n\n\t\treturn this;\n\n\t}\n\n} );\n\nfunction PointLightShadow() {\n\n\tLightShadow.call( this, new PerspectiveCamera( 90, 1, 0.5, 500 ) );\n\n\tthis._frameExtents = new Vector2( 4, 2 );\n\n\tthis._viewportCount = 6;\n\n\tthis._viewports = [\n\t\t// These viewports map a cube-map onto a 2D texture with the\n\t\t// following orientation:\n\t\t//\n\t\t//  xzXZ\n\t\t//   y Y\n\t\t//\n\t\t// X - Positive x direction\n\t\t// x - Negative x direction\n\t\t// Y - Positive y direction\n\t\t// y - Negative y direction\n\t\t// Z - Positive z direction\n\t\t// z - Negative z direction\n\n\t\t// positive X\n\t\tnew Vector4( 2, 1, 1, 1 ),\n\t\t// negative X\n\t\tnew Vector4( 0, 1, 1, 1 ),\n\t\t// positive Z\n\t\tnew Vector4( 3, 1, 1, 1 ),\n\t\t// negative Z\n\t\tnew Vector4( 1, 1, 1, 1 ),\n\t\t// positive Y\n\t\tnew Vector4( 3, 0, 1, 1 ),\n\t\t// negative Y\n\t\tnew Vector4( 1, 0, 1, 1 )\n\t];\n\n\tthis._cubeDirections = [\n\t\tnew Vector3( 1, 0, 0 ), new Vector3( - 1, 0, 0 ), new Vector3( 0, 0, 1 ),\n\t\tnew Vector3( 0, 0, - 1 ), new Vector3( 0, 1, 0 ), new Vector3( 0, - 1, 0 )\n\t];\n\n\tthis._cubeUps = [\n\t\tnew Vector3( 0, 1, 0 ), new Vector3( 0, 1, 0 ), new Vector3( 0, 1, 0 ),\n\t\tnew Vector3( 0, 1, 0 ), new Vector3( 0, 0, 1 ),\tnew Vector3( 0, 0, - 1 )\n\t];\n\n}\n\nPointLightShadow.prototype = Object.assign( Object.create( LightShadow.prototype ), {\n\n\tconstructor: PointLightShadow,\n\n\tisPointLightShadow: true,\n\n\tupdateMatrices: function ( light, viewportIndex = 0 ) {\n\n\t\tconst camera = this.camera,\n\t\t\tshadowMatrix = this.matrix,\n\t\t\tlightPositionWorld = this._lightPositionWorld,\n\t\t\tlookTarget = this._lookTarget,\n\t\t\tprojScreenMatrix = this._projScreenMatrix;\n\n\t\tlightPositionWorld.setFromMatrixPosition( light.matrixWorld );\n\t\tcamera.position.copy( lightPositionWorld );\n\n\t\tlookTarget.copy( camera.position );\n\t\tlookTarget.add( this._cubeDirections[ viewportIndex ] );\n\t\tcamera.up.copy( this._cubeUps[ viewportIndex ] );\n\t\tcamera.lookAt( lookTarget );\n\t\tcamera.updateMatrixWorld();\n\n\t\tshadowMatrix.makeTranslation( - lightPositionWorld.x, - lightPositionWorld.y, - lightPositionWorld.z );\n\n\t\tprojScreenMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );\n\t\tthis._frustum.setFromProjectionMatrix( projScreenMatrix );\n\n\t}\n\n} );\n\nfunction PointLight( color, intensity, distance, decay ) {\n\n\tLight.call( this, color, intensity );\n\n\tthis.type = 'PointLight';\n\n\tObject.defineProperty( this, 'power', {\n\t\tget: function () {\n\n\t\t\t// intensity = power per solid angle.\n\t\t\t// ref: equation (15) from https://seblagarde.files.wordpress.com/2015/07/course_notes_moving_frostbite_to_pbr_v32.pdf\n\t\t\treturn this.intensity * 4 * Math.PI;\n\n\t\t},\n\t\tset: function ( power ) {\n\n\t\t\t// intensity = power per solid angle.\n\t\t\t// ref: equation (15) from https://seblagarde.files.wordpress.com/2015/07/course_notes_moving_frostbite_to_pbr_v32.pdf\n\t\t\tthis.intensity = power / ( 4 * Math.PI );\n\n\t\t}\n\t} );\n\n\tthis.distance = ( distance !== undefined ) ? distance : 0;\n\tthis.decay = ( decay !== undefined ) ? decay : 1;\t// for physically correct lights, should be 2.\n\n\tthis.shadow = new PointLightShadow();\n\n}\n\nPointLight.prototype = Object.assign( Object.create( Light.prototype ), {\n\n\tconstructor: PointLight,\n\n\tisPointLight: true,\n\n\tcopy: function ( source ) {\n\n\t\tLight.prototype.copy.call( this, source );\n\n\t\tthis.distance = source.distance;\n\t\tthis.decay = source.decay;\n\n\t\tthis.shadow = source.shadow.clone();\n\n\t\treturn this;\n\n\t}\n\n} );\n\nfunction OrthographicCamera( left = - 1, right = 1, top = 1, bottom = - 1, near = 0.1, far = 2000 ) {\n\n\tCamera.call( this );\n\n\tthis.type = 'OrthographicCamera';\n\n\tthis.zoom = 1;\n\tthis.view = null;\n\n\tthis.left = left;\n\tthis.right = right;\n\tthis.top = top;\n\tthis.bottom = bottom;\n\n\tthis.near = near;\n\tthis.far = far;\n\n\tthis.updateProjectionMatrix();\n\n}\n\nOrthographicCamera.prototype = Object.assign( Object.create( Camera.prototype ), {\n\n\tconstructor: OrthographicCamera,\n\n\tisOrthographicCamera: true,\n\n\tcopy: function ( source, recursive ) {\n\n\t\tCamera.prototype.copy.call( this, source, recursive );\n\n\t\tthis.left = source.left;\n\t\tthis.right = source.right;\n\t\tthis.top = source.top;\n\t\tthis.bottom = source.bottom;\n\t\tthis.near = source.near;\n\t\tthis.far = source.far;\n\n\t\tthis.zoom = source.zoom;\n\t\tthis.view = source.view === null ? null : Object.assign( {}, source.view );\n\n\t\treturn this;\n\n\t},\n\n\tsetViewOffset: function ( fullWidth, fullHeight, x, y, width, height ) {\n\n\t\tif ( this.view === null ) {\n\n\t\t\tthis.view = {\n\t\t\t\tenabled: true,\n\t\t\t\tfullWidth: 1,\n\t\t\t\tfullHeight: 1,\n\t\t\t\toffsetX: 0,\n\t\t\t\toffsetY: 0,\n\t\t\t\twidth: 1,\n\t\t\t\theight: 1\n\t\t\t};\n\n\t\t}\n\n\t\tthis.view.enabled = true;\n\t\tthis.view.fullWidth = fullWidth;\n\t\tthis.view.fullHeight = fullHeight;\n\t\tthis.view.offsetX = x;\n\t\tthis.view.offsetY = y;\n\t\tthis.view.width = width;\n\t\tthis.view.height = height;\n\n\t\tthis.updateProjectionMatrix();\n\n\t},\n\n\tclearViewOffset: function () {\n\n\t\tif ( this.view !== null ) {\n\n\t\t\tthis.view.enabled = false;\n\n\t\t}\n\n\t\tthis.updateProjectionMatrix();\n\n\t},\n\n\tupdateProjectionMatrix: function () {\n\n\t\tconst dx = ( this.right - this.left ) / ( 2 * this.zoom );\n\t\tconst dy = ( this.top - this.bottom ) / ( 2 * this.zoom );\n\t\tconst cx = ( this.right + this.left ) / 2;\n\t\tconst cy = ( this.top + this.bottom ) / 2;\n\n\t\tlet left = cx - dx;\n\t\tlet right = cx + dx;\n\t\tlet top = cy + dy;\n\t\tlet bottom = cy - dy;\n\n\t\tif ( this.view !== null && this.view.enabled ) {\n\n\t\t\tconst scaleW = ( this.right - this.left ) / this.view.fullWidth / this.zoom;\n\t\t\tconst scaleH = ( this.top - this.bottom ) / this.view.fullHeight / this.zoom;\n\n\t\t\tleft += scaleW * this.view.offsetX;\n\t\t\tright = left + scaleW * this.view.width;\n\t\t\ttop -= scaleH * this.view.offsetY;\n\t\t\tbottom = top - scaleH * this.view.height;\n\n\t\t}\n\n\t\tthis.projectionMatrix.makeOrthographic( left, right, top, bottom, this.near, this.far );\n\n\t\tthis.projectionMatrixInverse.copy( this.projectionMatrix ).invert();\n\n\t},\n\n\ttoJSON: function ( meta ) {\n\n\t\tconst data = Object3D.prototype.toJSON.call( this, meta );\n\n\t\tdata.object.zoom = this.zoom;\n\t\tdata.object.left = this.left;\n\t\tdata.object.right = this.right;\n\t\tdata.object.top = this.top;\n\t\tdata.object.bottom = this.bottom;\n\t\tdata.object.near = this.near;\n\t\tdata.object.far = this.far;\n\n\t\tif ( this.view !== null ) data.object.view = Object.assign( {}, this.view );\n\n\t\treturn data;\n\n\t}\n\n} );\n\nfunction DirectionalLightShadow() {\n\n\tLightShadow.call( this, new OrthographicCamera( - 5, 5, 5, - 5, 0.5, 500 ) );\n\n}\n\nDirectionalLightShadow.prototype = Object.assign( Object.create( LightShadow.prototype ), {\n\n\tconstructor: DirectionalLightShadow,\n\n\tisDirectionalLightShadow: true,\n\n\tupdateMatrices: function ( light ) {\n\n\t\tLightShadow.prototype.updateMatrices.call( this, light );\n\n\t}\n\n} );\n\nfunction DirectionalLight( color, intensity ) {\n\n\tLight.call( this, color, intensity );\n\n\tthis.type = 'DirectionalLight';\n\n\tthis.position.copy( Object3D.DefaultUp );\n\tthis.updateMatrix();\n\n\tthis.target = new Object3D();\n\n\tthis.shadow = new DirectionalLightShadow();\n\n}\n\nDirectionalLight.prototype = Object.assign( Object.create( Light.prototype ), {\n\n\tconstructor: DirectionalLight,\n\n\tisDirectionalLight: true,\n\n\tcopy: function ( source ) {\n\n\t\tLight.prototype.copy.call( this, source );\n\n\t\tthis.target = source.target.clone();\n\n\t\tthis.shadow = source.shadow.clone();\n\n\t\treturn this;\n\n\t}\n\n} );\n\nfunction AmbientLight( color, intensity ) {\n\n\tLight.call( this, color, intensity );\n\n\tthis.type = 'AmbientLight';\n\n}\n\nAmbientLight.prototype = Object.assign( Object.create( Light.prototype ), {\n\n\tconstructor: AmbientLight,\n\n\tisAmbientLight: true\n\n} );\n\nfunction RectAreaLight( color, intensity, width, height ) {\n\n\tLight.call( this, color, intensity );\n\n\tthis.type = 'RectAreaLight';\n\n\tthis.width = ( width !== undefined ) ? width : 10;\n\tthis.height = ( height !== undefined ) ? height : 10;\n\n}\n\nRectAreaLight.prototype = Object.assign( Object.create( Light.prototype ), {\n\n\tconstructor: RectAreaLight,\n\n\tisRectAreaLight: true,\n\n\tcopy: function ( source ) {\n\n\t\tLight.prototype.copy.call( this, source );\n\n\t\tthis.width = source.width;\n\t\tthis.height = source.height;\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function ( meta ) {\n\n\t\tconst data = Light.prototype.toJSON.call( this, meta );\n\n\t\tdata.object.width = this.width;\n\t\tdata.object.height = this.height;\n\n\t\treturn data;\n\n\t}\n\n} );\n\n/**\n * Primary reference:\n *   https://graphics.stanford.edu/papers/envmap/envmap.pdf\n *\n * Secondary reference:\n *   https://www.ppsloan.org/publications/StupidSH36.pdf\n */\n\n// 3-band SH defined by 9 coefficients\n\nclass SphericalHarmonics3 {\n\n\tconstructor() {\n\n\t\tObject.defineProperty( this, 'isSphericalHarmonics3', { value: true } );\n\n\t\tthis.coefficients = [];\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tthis.coefficients.push( new Vector3() );\n\n\t\t}\n\n\t}\n\n\tset( coefficients ) {\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tthis.coefficients[ i ].copy( coefficients[ i ] );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tzero() {\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tthis.coefficients[ i ].set( 0, 0, 0 );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\t// get the radiance in the direction of the normal\n\t// target is a Vector3\n\tgetAt( normal, target ) {\n\n\t\t// normal is assumed to be unit length\n\n\t\tconst x = normal.x, y = normal.y, z = normal.z;\n\n\t\tconst coeff = this.coefficients;\n\n\t\t// band 0\n\t\ttarget.copy( coeff[ 0 ] ).multiplyScalar( 0.282095 );\n\n\t\t// band 1\n\t\ttarget.addScaledVector( coeff[ 1 ], 0.488603 * y );\n\t\ttarget.addScaledVector( coeff[ 2 ], 0.488603 * z );\n\t\ttarget.addScaledVector( coeff[ 3 ], 0.488603 * x );\n\n\t\t// band 2\n\t\ttarget.addScaledVector( coeff[ 4 ], 1.092548 * ( x * y ) );\n\t\ttarget.addScaledVector( coeff[ 5 ], 1.092548 * ( y * z ) );\n\t\ttarget.addScaledVector( coeff[ 6 ], 0.315392 * ( 3.0 * z * z - 1.0 ) );\n\t\ttarget.addScaledVector( coeff[ 7 ], 1.092548 * ( x * z ) );\n\t\ttarget.addScaledVector( coeff[ 8 ], 0.546274 * ( x * x - y * y ) );\n\n\t\treturn target;\n\n\t}\n\n\t// get the irradiance (radiance convolved with cosine lobe) in the direction of the normal\n\t// target is a Vector3\n\t// https://graphics.stanford.edu/papers/envmap/envmap.pdf\n\tgetIrradianceAt( normal, target ) {\n\n\t\t// normal is assumed to be unit length\n\n\t\tconst x = normal.x, y = normal.y, z = normal.z;\n\n\t\tconst coeff = this.coefficients;\n\n\t\t// band 0\n\t\ttarget.copy( coeff[ 0 ] ).multiplyScalar( 0.886227 ); // π * 0.282095\n\n\t\t// band 1\n\t\ttarget.addScaledVector( coeff[ 1 ], 2.0 * 0.511664 * y ); // ( 2 * π / 3 ) * 0.488603\n\t\ttarget.addScaledVector( coeff[ 2 ], 2.0 * 0.511664 * z );\n\t\ttarget.addScaledVector( coeff[ 3 ], 2.0 * 0.511664 * x );\n\n\t\t// band 2\n\t\ttarget.addScaledVector( coeff[ 4 ], 2.0 * 0.429043 * x * y ); // ( π / 4 ) * 1.092548\n\t\ttarget.addScaledVector( coeff[ 5 ], 2.0 * 0.429043 * y * z );\n\t\ttarget.addScaledVector( coeff[ 6 ], 0.743125 * z * z - 0.247708 ); // ( π / 4 ) * 0.315392 * 3\n\t\ttarget.addScaledVector( coeff[ 7 ], 2.0 * 0.429043 * x * z );\n\t\ttarget.addScaledVector( coeff[ 8 ], 0.429043 * ( x * x - y * y ) ); // ( π / 4 ) * 0.546274\n\n\t\treturn target;\n\n\t}\n\n\tadd( sh ) {\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tthis.coefficients[ i ].add( sh.coefficients[ i ] );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\taddScaledSH( sh, s ) {\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tthis.coefficients[ i ].addScaledVector( sh.coefficients[ i ], s );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tscale( s ) {\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tthis.coefficients[ i ].multiplyScalar( s );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tlerp( sh, alpha ) {\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tthis.coefficients[ i ].lerp( sh.coefficients[ i ], alpha );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tequals( sh ) {\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tif ( ! this.coefficients[ i ].equals( sh.coefficients[ i ] ) ) {\n\n\t\t\t\treturn false;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn true;\n\n\t}\n\n\tcopy( sh ) {\n\n\t\treturn this.set( sh.coefficients );\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tfromArray( array, offset = 0 ) {\n\n\t\tconst coefficients = this.coefficients;\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tcoefficients[ i ].fromArray( array, offset + ( i * 3 ) );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tconst coefficients = this.coefficients;\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tcoefficients[ i ].toArray( array, offset + ( i * 3 ) );\n\n\t\t}\n\n\t\treturn array;\n\n\t}\n\n\t// evaluate the basis functions\n\t// shBasis is an Array[ 9 ]\n\tstatic getBasisAt( normal, shBasis ) {\n\n\t\t// normal is assumed to be unit length\n\n\t\tconst x = normal.x, y = normal.y, z = normal.z;\n\n\t\t// band 0\n\t\tshBasis[ 0 ] = 0.282095;\n\n\t\t// band 1\n\t\tshBasis[ 1 ] = 0.488603 * y;\n\t\tshBasis[ 2 ] = 0.488603 * z;\n\t\tshBasis[ 3 ] = 0.488603 * x;\n\n\t\t// band 2\n\t\tshBasis[ 4 ] = 1.092548 * x * y;\n\t\tshBasis[ 5 ] = 1.092548 * y * z;\n\t\tshBasis[ 6 ] = 0.315392 * ( 3 * z * z - 1 );\n\t\tshBasis[ 7 ] = 1.092548 * x * z;\n\t\tshBasis[ 8 ] = 0.546274 * ( x * x - y * y );\n\n\t}\n\n}\n\nfunction LightProbe( sh, intensity ) {\n\n\tLight.call( this, undefined, intensity );\n\n\tthis.type = 'LightProbe';\n\n\tthis.sh = ( sh !== undefined ) ? sh : new SphericalHarmonics3();\n\n}\n\nLightProbe.prototype = Object.assign( Object.create( Light.prototype ), {\n\n\tconstructor: LightProbe,\n\n\tisLightProbe: true,\n\n\tcopy: function ( source ) {\n\n\t\tLight.prototype.copy.call( this, source );\n\n\t\tthis.sh.copy( source.sh );\n\n\t\treturn this;\n\n\t},\n\n\tfromJSON: function ( json ) {\n\n\t\tthis.intensity = json.intensity; // TODO: Move this bit to Light.fromJSON();\n\t\tthis.sh.fromArray( json.sh );\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function ( meta ) {\n\n\t\tconst data = Light.prototype.toJSON.call( this, meta );\n\n\t\tdata.object.sh = this.sh.toArray();\n\n\t\treturn data;\n\n\t}\n\n} );\n\nfunction MaterialLoader( manager ) {\n\n\tLoader.call( this, manager );\n\n\tthis.textures = {};\n\n}\n\nMaterialLoader.prototype = Object.assign( Object.create( Loader.prototype ), {\n\n\tconstructor: MaterialLoader,\n\n\tload: function ( url, onLoad, onProgress, onError ) {\n\n\t\tconst scope = this;\n\n\t\tconst loader = new FileLoader( scope.manager );\n\t\tloader.setPath( scope.path );\n\t\tloader.setRequestHeader( scope.requestHeader );\n\t\tloader.setWithCredentials( scope.withCredentials );\n\t\tloader.load( url, function ( text ) {\n\n\t\t\ttry {\n\n\t\t\t\tonLoad( scope.parse( JSON.parse( text ) ) );\n\n\t\t\t} catch ( e ) {\n\n\t\t\t\tif ( onError ) {\n\n\t\t\t\t\tonError( e );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.error( e );\n\n\t\t\t\t}\n\n\t\t\t\tscope.manager.itemError( url );\n\n\t\t\t}\n\n\t\t}, onProgress, onError );\n\n\t},\n\n\tparse: function ( json ) {\n\n\t\tconst textures = this.textures;\n\n\t\tfunction getTexture( name ) {\n\n\t\t\tif ( textures[ name ] === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.MaterialLoader: Undefined texture', name );\n\n\t\t\t}\n\n\t\t\treturn textures[ name ];\n\n\t\t}\n\n\t\tconst material = new Materials[ json.type ]();\n\n\t\tif ( json.uuid !== undefined ) material.uuid = json.uuid;\n\t\tif ( json.name !== undefined ) material.name = json.name;\n\t\tif ( json.color !== undefined && material.color !== undefined ) material.color.setHex( json.color );\n\t\tif ( json.roughness !== undefined ) material.roughness = json.roughness;\n\t\tif ( json.metalness !== undefined ) material.metalness = json.metalness;\n\t\tif ( json.sheen !== undefined ) material.sheen = new Color().setHex( json.sheen );\n\t\tif ( json.emissive !== undefined && material.emissive !== undefined ) material.emissive.setHex( json.emissive );\n\t\tif ( json.specular !== undefined && material.specular !== undefined ) material.specular.setHex( json.specular );\n\t\tif ( json.shininess !== undefined ) material.shininess = json.shininess;\n\t\tif ( json.clearcoat !== undefined ) material.clearcoat = json.clearcoat;\n\t\tif ( json.clearcoatRoughness !== undefined ) material.clearcoatRoughness = json.clearcoatRoughness;\n\t\tif ( json.fog !== undefined ) material.fog = json.fog;\n\t\tif ( json.flatShading !== undefined ) material.flatShading = json.flatShading;\n\t\tif ( json.blending !== undefined ) material.blending = json.blending;\n\t\tif ( json.combine !== undefined ) material.combine = json.combine;\n\t\tif ( json.side !== undefined ) material.side = json.side;\n\t\tif ( json.opacity !== undefined ) material.opacity = json.opacity;\n\t\tif ( json.transparent !== undefined ) material.transparent = json.transparent;\n\t\tif ( json.alphaTest !== undefined ) material.alphaTest = json.alphaTest;\n\t\tif ( json.depthTest !== undefined ) material.depthTest = json.depthTest;\n\t\tif ( json.depthWrite !== undefined ) material.depthWrite = json.depthWrite;\n\t\tif ( json.colorWrite !== undefined ) material.colorWrite = json.colorWrite;\n\n\t\tif ( json.stencilWrite !== undefined ) material.stencilWrite = json.stencilWrite;\n\t\tif ( json.stencilWriteMask !== undefined ) material.stencilWriteMask = json.stencilWriteMask;\n\t\tif ( json.stencilFunc !== undefined ) material.stencilFunc = json.stencilFunc;\n\t\tif ( json.stencilRef !== undefined ) material.stencilRef = json.stencilRef;\n\t\tif ( json.stencilFuncMask !== undefined ) material.stencilFuncMask = json.stencilFuncMask;\n\t\tif ( json.stencilFail !== undefined ) material.stencilFail = json.stencilFail;\n\t\tif ( json.stencilZFail !== undefined ) material.stencilZFail = json.stencilZFail;\n\t\tif ( json.stencilZPass !== undefined ) material.stencilZPass = json.stencilZPass;\n\n\t\tif ( json.wireframe !== undefined ) material.wireframe = json.wireframe;\n\t\tif ( json.wireframeLinewidth !== undefined ) material.wireframeLinewidth = json.wireframeLinewidth;\n\t\tif ( json.wireframeLinecap !== undefined ) material.wireframeLinecap = json.wireframeLinecap;\n\t\tif ( json.wireframeLinejoin !== undefined ) material.wireframeLinejoin = json.wireframeLinejoin;\n\n\t\tif ( json.rotation !== undefined ) material.rotation = json.rotation;\n\n\t\tif ( json.linewidth !== 1 ) material.linewidth = json.linewidth;\n\t\tif ( json.dashSize !== undefined ) material.dashSize = json.dashSize;\n\t\tif ( json.gapSize !== undefined ) material.gapSize = json.gapSize;\n\t\tif ( json.scale !== undefined ) material.scale = json.scale;\n\n\t\tif ( json.polygonOffset !== undefined ) material.polygonOffset = json.polygonOffset;\n\t\tif ( json.polygonOffsetFactor !== undefined ) material.polygonOffsetFactor = json.polygonOffsetFactor;\n\t\tif ( json.polygonOffsetUnits !== undefined ) material.polygonOffsetUnits = json.polygonOffsetUnits;\n\n\t\tif ( json.skinning !== undefined ) material.skinning = json.skinning;\n\t\tif ( json.morphTargets !== undefined ) material.morphTargets = json.morphTargets;\n\t\tif ( json.morphNormals !== undefined ) material.morphNormals = json.morphNormals;\n\t\tif ( json.dithering !== undefined ) material.dithering = json.dithering;\n\n\t\tif ( json.vertexTangents !== undefined ) material.vertexTangents = json.vertexTangents;\n\n\t\tif ( json.visible !== undefined ) material.visible = json.visible;\n\n\t\tif ( json.toneMapped !== undefined ) material.toneMapped = json.toneMapped;\n\n\t\tif ( json.userData !== undefined ) material.userData = json.userData;\n\n\t\tif ( json.vertexColors !== undefined ) {\n\n\t\t\tif ( typeof json.vertexColors === 'number' ) {\n\n\t\t\t\tmaterial.vertexColors = ( json.vertexColors > 0 ) ? true : false;\n\n\t\t\t} else {\n\n\t\t\t\tmaterial.vertexColors = json.vertexColors;\n\n\t\t\t}\n\n\t\t}\n\n\t\t// Shader Material\n\n\t\tif ( json.uniforms !== undefined ) {\n\n\t\t\tfor ( const name in json.uniforms ) {\n\n\t\t\t\tconst uniform = json.uniforms[ name ];\n\n\t\t\t\tmaterial.uniforms[ name ] = {};\n\n\t\t\t\tswitch ( uniform.type ) {\n\n\t\t\t\t\tcase 't':\n\t\t\t\t\t\tmaterial.uniforms[ name ].value = getTexture( uniform.value );\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'c':\n\t\t\t\t\t\tmaterial.uniforms[ name ].value = new Color().setHex( uniform.value );\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'v2':\n\t\t\t\t\t\tmaterial.uniforms[ name ].value = new Vector2().fromArray( uniform.value );\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'v3':\n\t\t\t\t\t\tmaterial.uniforms[ name ].value = new Vector3().fromArray( uniform.value );\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'v4':\n\t\t\t\t\t\tmaterial.uniforms[ name ].value = new Vector4().fromArray( uniform.value );\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'm3':\n\t\t\t\t\t\tmaterial.uniforms[ name ].value = new Matrix3().fromArray( uniform.value );\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'm4':\n\t\t\t\t\t\tmaterial.uniforms[ name ].value = new Matrix4().fromArray( uniform.value );\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tdefault:\n\t\t\t\t\t\tmaterial.uniforms[ name ].value = uniform.value;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( json.defines !== undefined ) material.defines = json.defines;\n\t\tif ( json.vertexShader !== undefined ) material.vertexShader = json.vertexShader;\n\t\tif ( json.fragmentShader !== undefined ) material.fragmentShader = json.fragmentShader;\n\n\t\tif ( json.extensions !== undefined ) {\n\n\t\t\tfor ( const key in json.extensions ) {\n\n\t\t\t\tmaterial.extensions[ key ] = json.extensions[ key ];\n\n\t\t\t}\n\n\t\t}\n\n\t\t// Deprecated\n\n\t\tif ( json.shading !== undefined ) material.flatShading = json.shading === 1; // THREE.FlatShading\n\n\t\t// for PointsMaterial\n\n\t\tif ( json.size !== undefined ) material.size = json.size;\n\t\tif ( json.sizeAttenuation !== undefined ) material.sizeAttenuation = json.sizeAttenuation;\n\n\t\t// maps\n\n\t\tif ( json.map !== undefined ) material.map = getTexture( json.map );\n\t\tif ( json.matcap !== undefined ) material.matcap = getTexture( json.matcap );\n\n\t\tif ( json.alphaMap !== undefined ) material.alphaMap = getTexture( json.alphaMap );\n\n\t\tif ( json.bumpMap !== undefined ) material.bumpMap = getTexture( json.bumpMap );\n\t\tif ( json.bumpScale !== undefined ) material.bumpScale = json.bumpScale;\n\n\t\tif ( json.normalMap !== undefined ) material.normalMap = getTexture( json.normalMap );\n\t\tif ( json.normalMapType !== undefined ) material.normalMapType = json.normalMapType;\n\t\tif ( json.normalScale !== undefined ) {\n\n\t\t\tlet normalScale = json.normalScale;\n\n\t\t\tif ( Array.isArray( normalScale ) === false ) {\n\n\t\t\t\t// Blender exporter used to export a scalar. See #7459\n\n\t\t\t\tnormalScale = [ normalScale, normalScale ];\n\n\t\t\t}\n\n\t\t\tmaterial.normalScale = new Vector2().fromArray( normalScale );\n\n\t\t}\n\n\t\tif ( json.displacementMap !== undefined ) material.displacementMap = getTexture( json.displacementMap );\n\t\tif ( json.displacementScale !== undefined ) material.displacementScale = json.displacementScale;\n\t\tif ( json.displacementBias !== undefined ) material.displacementBias = json.displacementBias;\n\n\t\tif ( json.roughnessMap !== undefined ) material.roughnessMap = getTexture( json.roughnessMap );\n\t\tif ( json.metalnessMap !== undefined ) material.metalnessMap = getTexture( json.metalnessMap );\n\n\t\tif ( json.emissiveMap !== undefined ) material.emissiveMap = getTexture( json.emissiveMap );\n\t\tif ( json.emissiveIntensity !== undefined ) material.emissiveIntensity = json.emissiveIntensity;\n\n\t\tif ( json.specularMap !== undefined ) material.specularMap = getTexture( json.specularMap );\n\n\t\tif ( json.envMap !== undefined ) material.envMap = getTexture( json.envMap );\n\t\tif ( json.envMapIntensity !== undefined ) material.envMapIntensity = json.envMapIntensity;\n\n\t\tif ( json.reflectivity !== undefined ) material.reflectivity = json.reflectivity;\n\t\tif ( json.refractionRatio !== undefined ) material.refractionRatio = json.refractionRatio;\n\n\t\tif ( json.lightMap !== undefined ) material.lightMap = getTexture( json.lightMap );\n\t\tif ( json.lightMapIntensity !== undefined ) material.lightMapIntensity = json.lightMapIntensity;\n\n\t\tif ( json.aoMap !== undefined ) material.aoMap = getTexture( json.aoMap );\n\t\tif ( json.aoMapIntensity !== undefined ) material.aoMapIntensity = json.aoMapIntensity;\n\n\t\tif ( json.gradientMap !== undefined ) material.gradientMap = getTexture( json.gradientMap );\n\n\t\tif ( json.clearcoatMap !== undefined ) material.clearcoatMap = getTexture( json.clearcoatMap );\n\t\tif ( json.clearcoatRoughnessMap !== undefined ) material.clearcoatRoughnessMap = getTexture( json.clearcoatRoughnessMap );\n\t\tif ( json.clearcoatNormalMap !== undefined ) material.clearcoatNormalMap = getTexture( json.clearcoatNormalMap );\n\t\tif ( json.clearcoatNormalScale !== undefined ) material.clearcoatNormalScale = new Vector2().fromArray( json.clearcoatNormalScale );\n\n\t\tif ( json.transmission !== undefined ) material.transmission = json.transmission;\n\t\tif ( json.transmissionMap !== undefined ) material.transmissionMap = getTexture( json.transmissionMap );\n\n\t\treturn material;\n\n\t},\n\n\tsetTextures: function ( value ) {\n\n\t\tthis.textures = value;\n\t\treturn this;\n\n\t}\n\n} );\n\nconst LoaderUtils = {\n\n\tdecodeText: function ( array ) {\n\n\t\tif ( typeof TextDecoder !== 'undefined' ) {\n\n\t\t\treturn new TextDecoder().decode( array );\n\n\t\t}\n\n\t\t// Avoid the String.fromCharCode.apply(null, array) shortcut, which\n\t\t// throws a \"maximum call stack size exceeded\" error for large arrays.\n\n\t\tlet s = '';\n\n\t\tfor ( let i = 0, il = array.length; i < il; i ++ ) {\n\n\t\t\t// Implicitly assumes little-endian.\n\t\t\ts += String.fromCharCode( array[ i ] );\n\n\t\t}\n\n\t\ttry {\n\n\t\t\t// merges multi-byte utf-8 characters.\n\n\t\t\treturn decodeURIComponent( escape( s ) );\n\n\t\t} catch ( e ) { // see #16358\n\n\t\t\treturn s;\n\n\t\t}\n\n\t},\n\n\textractUrlBase: function ( url ) {\n\n\t\tconst index = url.lastIndexOf( '/' );\n\n\t\tif ( index === - 1 ) return './';\n\n\t\treturn url.substr( 0, index + 1 );\n\n\t}\n\n};\n\nfunction InstancedBufferGeometry() {\n\n\tBufferGeometry.call( this );\n\n\tthis.type = 'InstancedBufferGeometry';\n\tthis.instanceCount = Infinity;\n\n}\n\nInstancedBufferGeometry.prototype = Object.assign( Object.create( BufferGeometry.prototype ), {\n\n\tconstructor: InstancedBufferGeometry,\n\n\tisInstancedBufferGeometry: true,\n\n\tcopy: function ( source ) {\n\n\t\tBufferGeometry.prototype.copy.call( this, source );\n\n\t\tthis.instanceCount = source.instanceCount;\n\n\t\treturn this;\n\n\t},\n\n\tclone: function () {\n\n\t\treturn new this.constructor().copy( this );\n\n\t},\n\n\ttoJSON: function () {\n\n\t\tconst data = BufferGeometry.prototype.toJSON.call( this );\n\n\t\tdata.instanceCount = this.instanceCount;\n\n\t\tdata.isInstancedBufferGeometry = true;\n\n\t\treturn data;\n\n\t}\n\n} );\n\nfunction InstancedBufferAttribute( array, itemSize, normalized, meshPerAttribute ) {\n\n\tif ( typeof ( normalized ) === 'number' ) {\n\n\t\tmeshPerAttribute = normalized;\n\n\t\tnormalized = false;\n\n\t\tconsole.error( 'THREE.InstancedBufferAttribute: The constructor now expects normalized as the third argument.' );\n\n\t}\n\n\tBufferAttribute.call( this, array, itemSize, normalized );\n\n\tthis.meshPerAttribute = meshPerAttribute || 1;\n\n}\n\nInstancedBufferAttribute.prototype = Object.assign( Object.create( BufferAttribute.prototype ), {\n\n\tconstructor: InstancedBufferAttribute,\n\n\tisInstancedBufferAttribute: true,\n\n\tcopy: function ( source ) {\n\n\t\tBufferAttribute.prototype.copy.call( this, source );\n\n\t\tthis.meshPerAttribute = source.meshPerAttribute;\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function ()\t{\n\n\t\tconst data = BufferAttribute.prototype.toJSON.call( this );\n\n\t\tdata.meshPerAttribute = this.meshPerAttribute;\n\n\t\tdata.isInstancedBufferAttribute = true;\n\n\t\treturn data;\n\n\t}\n\n} );\n\nfunction BufferGeometryLoader( manager ) {\n\n\tLoader.call( this, manager );\n\n}\n\nBufferGeometryLoader.prototype = Object.assign( Object.create( Loader.prototype ), {\n\n\tconstructor: BufferGeometryLoader,\n\n\tload: function ( url, onLoad, onProgress, onError ) {\n\n\t\tconst scope = this;\n\n\t\tconst loader = new FileLoader( scope.manager );\n\t\tloader.setPath( scope.path );\n\t\tloader.setRequestHeader( scope.requestHeader );\n\t\tloader.setWithCredentials( scope.withCredentials );\n\t\tloader.load( url, function ( text ) {\n\n\t\t\ttry {\n\n\t\t\t\tonLoad( scope.parse( JSON.parse( text ) ) );\n\n\t\t\t} catch ( e ) {\n\n\t\t\t\tif ( onError ) {\n\n\t\t\t\t\tonError( e );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.error( e );\n\n\t\t\t\t}\n\n\t\t\t\tscope.manager.itemError( url );\n\n\t\t\t}\n\n\t\t}, onProgress, onError );\n\n\t},\n\n\tparse: function ( json ) {\n\n\t\tconst interleavedBufferMap = {};\n\t\tconst arrayBufferMap = {};\n\n\t\tfunction getInterleavedBuffer( json, uuid ) {\n\n\t\t\tif ( interleavedBufferMap[ uuid ] !== undefined ) return interleavedBufferMap[ uuid ];\n\n\t\t\tconst interleavedBuffers = json.interleavedBuffers;\n\t\t\tconst interleavedBuffer = interleavedBuffers[ uuid ];\n\n\t\t\tconst buffer = getArrayBuffer( json, interleavedBuffer.buffer );\n\n\t\t\tconst array = getTypedArray( interleavedBuffer.type, buffer );\n\t\t\tconst ib = new InterleavedBuffer( array, interleavedBuffer.stride );\n\t\t\tib.uuid = interleavedBuffer.uuid;\n\n\t\t\tinterleavedBufferMap[ uuid ] = ib;\n\n\t\t\treturn ib;\n\n\t\t}\n\n\t\tfunction getArrayBuffer( json, uuid ) {\n\n\t\t\tif ( arrayBufferMap[ uuid ] !== undefined ) return arrayBufferMap[ uuid ];\n\n\t\t\tconst arrayBuffers = json.arrayBuffers;\n\t\t\tconst arrayBuffer = arrayBuffers[ uuid ];\n\n\t\t\tconst ab = new Uint32Array( arrayBuffer ).buffer;\n\n\t\t\tarrayBufferMap[ uuid ] = ab;\n\n\t\t\treturn ab;\n\n\t\t}\n\n\t\tconst geometry = json.isInstancedBufferGeometry ? new InstancedBufferGeometry() : new BufferGeometry();\n\n\t\tconst index = json.data.index;\n\n\t\tif ( index !== undefined ) {\n\n\t\t\tconst typedArray = getTypedArray( index.type, index.array );\n\t\t\tgeometry.setIndex( new BufferAttribute( typedArray, 1 ) );\n\n\t\t}\n\n\t\tconst attributes = json.data.attributes;\n\n\t\tfor ( const key in attributes ) {\n\n\t\t\tconst attribute = attributes[ key ];\n\t\t\tlet bufferAttribute;\n\n\t\t\tif ( attribute.isInterleavedBufferAttribute ) {\n\n\t\t\t\tconst interleavedBuffer = getInterleavedBuffer( json.data, attribute.data );\n\t\t\t\tbufferAttribute = new InterleavedBufferAttribute( interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized );\n\n\t\t\t} else {\n\n\t\t\t\tconst typedArray = getTypedArray( attribute.type, attribute.array );\n\t\t\t\tconst bufferAttributeConstr = attribute.isInstancedBufferAttribute ? InstancedBufferAttribute : BufferAttribute;\n\t\t\t\tbufferAttribute = new bufferAttributeConstr( typedArray, attribute.itemSize, attribute.normalized );\n\n\t\t\t}\n\n\t\t\tif ( attribute.name !== undefined ) bufferAttribute.name = attribute.name;\n\t\t\tgeometry.setAttribute( key, bufferAttribute );\n\n\t\t}\n\n\t\tconst morphAttributes = json.data.morphAttributes;\n\n\t\tif ( morphAttributes ) {\n\n\t\t\tfor ( const key in morphAttributes ) {\n\n\t\t\t\tconst attributeArray = morphAttributes[ key ];\n\n\t\t\t\tconst array = [];\n\n\t\t\t\tfor ( let i = 0, il = attributeArray.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst attribute = attributeArray[ i ];\n\t\t\t\t\tlet bufferAttribute;\n\n\t\t\t\t\tif ( attribute.isInterleavedBufferAttribute ) {\n\n\t\t\t\t\t\tconst interleavedBuffer = getInterleavedBuffer( json.data, attribute.data );\n\t\t\t\t\t\tbufferAttribute = new InterleavedBufferAttribute( interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tconst typedArray = getTypedArray( attribute.type, attribute.array );\n\t\t\t\t\t\tbufferAttribute = new BufferAttribute( typedArray, attribute.itemSize, attribute.normalized );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( attribute.name !== undefined ) bufferAttribute.name = attribute.name;\n\t\t\t\t\tarray.push( bufferAttribute );\n\n\t\t\t\t}\n\n\t\t\t\tgeometry.morphAttributes[ key ] = array;\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst morphTargetsRelative = json.data.morphTargetsRelative;\n\n\t\tif ( morphTargetsRelative ) {\n\n\t\t\tgeometry.morphTargetsRelative = true;\n\n\t\t}\n\n\t\tconst groups = json.data.groups || json.data.drawcalls || json.data.offsets;\n\n\t\tif ( groups !== undefined ) {\n\n\t\t\tfor ( let i = 0, n = groups.length; i !== n; ++ i ) {\n\n\t\t\t\tconst group = groups[ i ];\n\n\t\t\t\tgeometry.addGroup( group.start, group.count, group.materialIndex );\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst boundingSphere = json.data.boundingSphere;\n\n\t\tif ( boundingSphere !== undefined ) {\n\n\t\t\tconst center = new Vector3();\n\n\t\t\tif ( boundingSphere.center !== undefined ) {\n\n\t\t\t\tcenter.fromArray( boundingSphere.center );\n\n\t\t\t}\n\n\t\t\tgeometry.boundingSphere = new Sphere( center, boundingSphere.radius );\n\n\t\t}\n\n\t\tif ( json.name ) geometry.name = json.name;\n\t\tif ( json.userData ) geometry.userData = json.userData;\n\n\t\treturn geometry;\n\n\t}\n\n} );\n\nclass ObjectLoader extends Loader {\n\n\tconstructor( manager ) {\n\n\t\tsuper( manager );\n\n\t}\n\n\tload( url, onLoad, onProgress, onError ) {\n\n\t\tconst scope = this;\n\n\t\tconst path = ( this.path === '' ) ? LoaderUtils.extractUrlBase( url ) : this.path;\n\t\tthis.resourcePath = this.resourcePath || path;\n\n\t\tconst loader = new FileLoader( this.manager );\n\t\tloader.setPath( this.path );\n\t\tloader.setRequestHeader( this.requestHeader );\n\t\tloader.setWithCredentials( this.withCredentials );\n\t\tloader.load( url, function ( text ) {\n\n\t\t\tlet json = null;\n\n\t\t\ttry {\n\n\t\t\t\tjson = JSON.parse( text );\n\n\t\t\t} catch ( error ) {\n\n\t\t\t\tif ( onError !== undefined ) onError( error );\n\n\t\t\t\tconsole.error( 'THREE:ObjectLoader: Can\\'t parse ' + url + '.', error.message );\n\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t\tconst metadata = json.metadata;\n\n\t\t\tif ( metadata === undefined || metadata.type === undefined || metadata.type.toLowerCase() === 'geometry' ) {\n\n\t\t\t\tconsole.error( 'THREE.ObjectLoader: Can\\'t load ' + url );\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t\tscope.parse( json, onLoad );\n\n\t\t}, onProgress, onError );\n\n\t}\n\n\tparse( json, onLoad ) {\n\n\t\tconst animations = this.parseAnimations( json.animations );\n\t\tconst shapes = this.parseShapes( json.shapes );\n\t\tconst geometries = this.parseGeometries( json.geometries, shapes );\n\n\t\tconst images = this.parseImages( json.images, function () {\n\n\t\t\tif ( onLoad !== undefined ) onLoad( object );\n\n\t\t} );\n\n\t\tconst textures = this.parseTextures( json.textures, images );\n\t\tconst materials = this.parseMaterials( json.materials, textures );\n\n\t\tconst object = this.parseObject( json.object, geometries, materials, animations );\n\t\tconst skeletons = this.parseSkeletons( json.skeletons, object );\n\n\t\tthis.bindSkeletons( object, skeletons );\n\n\t\t//\n\n\t\tif ( onLoad !== undefined ) {\n\n\t\t\tlet hasImages = false;\n\n\t\t\tfor ( const uuid in images ) {\n\n\t\t\t\tif ( images[ uuid ] instanceof HTMLImageElement ) {\n\n\t\t\t\t\thasImages = true;\n\t\t\t\t\tbreak;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( hasImages === false ) onLoad( object );\n\n\t\t}\n\n\t\treturn object;\n\n\t}\n\n\tparseShapes( json ) {\n\n\t\tconst shapes = {};\n\n\t\tif ( json !== undefined ) {\n\n\t\t\tfor ( let i = 0, l = json.length; i < l; i ++ ) {\n\n\t\t\t\tconst shape = new Shape().fromJSON( json[ i ] );\n\n\t\t\t\tshapes[ shape.uuid ] = shape;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn shapes;\n\n\t}\n\n\tparseSkeletons( json, object ) {\n\n\t\tconst skeletons = {};\n\t\tconst bones = {};\n\n\t\t// generate bone lookup table\n\n\t\tobject.traverse( function ( child ) {\n\n\t\t\tif ( child.isBone ) bones[ child.uuid ] = child;\n\n\t\t} );\n\n\t\t// create skeletons\n\n\t\tif ( json !== undefined ) {\n\n\t\t\tfor ( let i = 0, l = json.length; i < l; i ++ ) {\n\n\t\t\t\tconst skeleton = new Skeleton().fromJSON( json[ i ], bones );\n\n\t\t\t\tskeletons[ skeleton.uuid ] = skeleton;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn skeletons;\n\n\t}\n\n\tparseGeometries( json, shapes ) {\n\n\t\tconst geometries = {};\n\t\tlet geometryShapes;\n\n\t\tif ( json !== undefined ) {\n\n\t\t\tconst bufferGeometryLoader = new BufferGeometryLoader();\n\n\t\t\tfor ( let i = 0, l = json.length; i < l; i ++ ) {\n\n\t\t\t\tlet geometry;\n\t\t\t\tconst data = json[ i ];\n\n\t\t\t\tswitch ( data.type ) {\n\n\t\t\t\t\tcase 'PlaneGeometry':\n\t\t\t\t\tcase 'PlaneBufferGeometry':\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tdata.width,\n\t\t\t\t\t\t\tdata.height,\n\t\t\t\t\t\t\tdata.widthSegments,\n\t\t\t\t\t\t\tdata.heightSegments\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'BoxGeometry':\n\t\t\t\t\tcase 'BoxBufferGeometry':\n\t\t\t\t\tcase 'CubeGeometry': // backwards compatible\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tdata.width,\n\t\t\t\t\t\t\tdata.height,\n\t\t\t\t\t\t\tdata.depth,\n\t\t\t\t\t\t\tdata.widthSegments,\n\t\t\t\t\t\t\tdata.heightSegments,\n\t\t\t\t\t\t\tdata.depthSegments\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'CircleGeometry':\n\t\t\t\t\tcase 'CircleBufferGeometry':\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tdata.radius,\n\t\t\t\t\t\t\tdata.segments,\n\t\t\t\t\t\t\tdata.thetaStart,\n\t\t\t\t\t\t\tdata.thetaLength\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'CylinderGeometry':\n\t\t\t\t\tcase 'CylinderBufferGeometry':\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tdata.radiusTop,\n\t\t\t\t\t\t\tdata.radiusBottom,\n\t\t\t\t\t\t\tdata.height,\n\t\t\t\t\t\t\tdata.radialSegments,\n\t\t\t\t\t\t\tdata.heightSegments,\n\t\t\t\t\t\t\tdata.openEnded,\n\t\t\t\t\t\t\tdata.thetaStart,\n\t\t\t\t\t\t\tdata.thetaLength\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'ConeGeometry':\n\t\t\t\t\tcase 'ConeBufferGeometry':\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tdata.radius,\n\t\t\t\t\t\t\tdata.height,\n\t\t\t\t\t\t\tdata.radialSegments,\n\t\t\t\t\t\t\tdata.heightSegments,\n\t\t\t\t\t\t\tdata.openEnded,\n\t\t\t\t\t\t\tdata.thetaStart,\n\t\t\t\t\t\t\tdata.thetaLength\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'SphereGeometry':\n\t\t\t\t\tcase 'SphereBufferGeometry':\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tdata.radius,\n\t\t\t\t\t\t\tdata.widthSegments,\n\t\t\t\t\t\t\tdata.heightSegments,\n\t\t\t\t\t\t\tdata.phiStart,\n\t\t\t\t\t\t\tdata.phiLength,\n\t\t\t\t\t\t\tdata.thetaStart,\n\t\t\t\t\t\t\tdata.thetaLength\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'DodecahedronGeometry':\n\t\t\t\t\tcase 'DodecahedronBufferGeometry':\n\t\t\t\t\tcase 'IcosahedronGeometry':\n\t\t\t\t\tcase 'IcosahedronBufferGeometry':\n\t\t\t\t\tcase 'OctahedronGeometry':\n\t\t\t\t\tcase 'OctahedronBufferGeometry':\n\t\t\t\t\tcase 'TetrahedronGeometry':\n\t\t\t\t\tcase 'TetrahedronBufferGeometry':\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tdata.radius,\n\t\t\t\t\t\t\tdata.detail\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'RingGeometry':\n\t\t\t\t\tcase 'RingBufferGeometry':\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tdata.innerRadius,\n\t\t\t\t\t\t\tdata.outerRadius,\n\t\t\t\t\t\t\tdata.thetaSegments,\n\t\t\t\t\t\t\tdata.phiSegments,\n\t\t\t\t\t\t\tdata.thetaStart,\n\t\t\t\t\t\t\tdata.thetaLength\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'TorusGeometry':\n\t\t\t\t\tcase 'TorusBufferGeometry':\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tdata.radius,\n\t\t\t\t\t\t\tdata.tube,\n\t\t\t\t\t\t\tdata.radialSegments,\n\t\t\t\t\t\t\tdata.tubularSegments,\n\t\t\t\t\t\t\tdata.arc\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'TorusKnotGeometry':\n\t\t\t\t\tcase 'TorusKnotBufferGeometry':\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tdata.radius,\n\t\t\t\t\t\t\tdata.tube,\n\t\t\t\t\t\t\tdata.tubularSegments,\n\t\t\t\t\t\t\tdata.radialSegments,\n\t\t\t\t\t\t\tdata.p,\n\t\t\t\t\t\t\tdata.q\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'TubeGeometry':\n\t\t\t\t\tcase 'TubeBufferGeometry':\n\n\t\t\t\t\t\t// This only works for built-in curves (e.g. CatmullRomCurve3).\n\t\t\t\t\t\t// User defined curves or instances of CurvePath will not be deserialized.\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tnew Curves[ data.path.type ]().fromJSON( data.path ),\n\t\t\t\t\t\t\tdata.tubularSegments,\n\t\t\t\t\t\t\tdata.radius,\n\t\t\t\t\t\t\tdata.radialSegments,\n\t\t\t\t\t\t\tdata.closed\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'LatheGeometry':\n\t\t\t\t\tcase 'LatheBufferGeometry':\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tdata.points,\n\t\t\t\t\t\t\tdata.segments,\n\t\t\t\t\t\t\tdata.phiStart,\n\t\t\t\t\t\t\tdata.phiLength\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'PolyhedronGeometry':\n\t\t\t\t\tcase 'PolyhedronBufferGeometry':\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tdata.vertices,\n\t\t\t\t\t\t\tdata.indices,\n\t\t\t\t\t\t\tdata.radius,\n\t\t\t\t\t\t\tdata.details\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'ShapeGeometry':\n\t\t\t\t\tcase 'ShapeBufferGeometry':\n\n\t\t\t\t\t\tgeometryShapes = [];\n\n\t\t\t\t\t\tfor ( let j = 0, jl = data.shapes.length; j < jl; j ++ ) {\n\n\t\t\t\t\t\t\tconst shape = shapes[ data.shapes[ j ] ];\n\n\t\t\t\t\t\t\tgeometryShapes.push( shape );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tgeometryShapes,\n\t\t\t\t\t\t\tdata.curveSegments\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\n\t\t\t\t\tcase 'ExtrudeGeometry':\n\t\t\t\t\tcase 'ExtrudeBufferGeometry':\n\n\t\t\t\t\t\tgeometryShapes = [];\n\n\t\t\t\t\t\tfor ( let j = 0, jl = data.shapes.length; j < jl; j ++ ) {\n\n\t\t\t\t\t\t\tconst shape = shapes[ data.shapes[ j ] ];\n\n\t\t\t\t\t\t\tgeometryShapes.push( shape );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tconst extrudePath = data.options.extrudePath;\n\n\t\t\t\t\t\tif ( extrudePath !== undefined ) {\n\n\t\t\t\t\t\t\tdata.options.extrudePath = new Curves[ extrudePath.type ]().fromJSON( extrudePath );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tgeometry = new Geometries[ data.type ](\n\t\t\t\t\t\t\tgeometryShapes,\n\t\t\t\t\t\t\tdata.options\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'BufferGeometry':\n\t\t\t\t\tcase 'InstancedBufferGeometry':\n\n\t\t\t\t\t\tgeometry = bufferGeometryLoader.parse( data );\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'Geometry':\n\n\t\t\t\t\t\tconsole.error( 'THREE.ObjectLoader: Loading \"Geometry\" is not supported anymore.' );\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tdefault:\n\n\t\t\t\t\t\tconsole.warn( 'THREE.ObjectLoader: Unsupported geometry type \"' + data.type + '\"' );\n\n\t\t\t\t\t\tcontinue;\n\n\t\t\t\t}\n\n\t\t\t\tgeometry.uuid = data.uuid;\n\n\t\t\t\tif ( data.name !== undefined ) geometry.name = data.name;\n\t\t\t\tif ( geometry.isBufferGeometry === true && data.userData !== undefined ) geometry.userData = data.userData;\n\n\t\t\t\tgeometries[ data.uuid ] = geometry;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn geometries;\n\n\t}\n\n\tparseMaterials( json, textures ) {\n\n\t\tconst cache = {}; // MultiMaterial\n\t\tconst materials = {};\n\n\t\tif ( json !== undefined ) {\n\n\t\t\tconst loader = new MaterialLoader();\n\t\t\tloader.setTextures( textures );\n\n\t\t\tfor ( let i = 0, l = json.length; i < l; i ++ ) {\n\n\t\t\t\tconst data = json[ i ];\n\n\t\t\t\tif ( data.type === 'MultiMaterial' ) {\n\n\t\t\t\t\t// Deprecated\n\n\t\t\t\t\tconst array = [];\n\n\t\t\t\t\tfor ( let j = 0; j < data.materials.length; j ++ ) {\n\n\t\t\t\t\t\tconst material = data.materials[ j ];\n\n\t\t\t\t\t\tif ( cache[ material.uuid ] === undefined ) {\n\n\t\t\t\t\t\t\tcache[ material.uuid ] = loader.parse( material );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tarray.push( cache[ material.uuid ] );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tmaterials[ data.uuid ] = array;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tif ( cache[ data.uuid ] === undefined ) {\n\n\t\t\t\t\t\tcache[ data.uuid ] = loader.parse( data );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tmaterials[ data.uuid ] = cache[ data.uuid ];\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn materials;\n\n\t}\n\n\tparseAnimations( json ) {\n\n\t\tconst animations = {};\n\n\t\tif ( json !== undefined ) {\n\n\t\t\tfor ( let i = 0; i < json.length; i ++ ) {\n\n\t\t\t\tconst data = json[ i ];\n\n\t\t\t\tconst clip = AnimationClip.parse( data );\n\n\t\t\t\tanimations[ clip.uuid ] = clip;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn animations;\n\n\t}\n\n\tparseImages( json, onLoad ) {\n\n\t\tconst scope = this;\n\t\tconst images = {};\n\n\t\tlet loader;\n\n\t\tfunction loadImage( url ) {\n\n\t\t\tscope.manager.itemStart( url );\n\n\t\t\treturn loader.load( url, function () {\n\n\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t}, undefined, function () {\n\n\t\t\t\tscope.manager.itemError( url );\n\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t} );\n\n\t\t}\n\n\t\tfunction deserializeImage( image ) {\n\n\t\t\tif ( typeof image === 'string' ) {\n\n\t\t\t\tconst url = image;\n\n\t\t\t\tconst path = /^(\\/\\/)|([a-z]+:(\\/\\/)?)/i.test( url ) ? url : scope.resourcePath + url;\n\n\t\t\t\treturn loadImage( path );\n\n\t\t\t} else {\n\n\t\t\t\tif ( image.data ) {\n\n\t\t\t\t\treturn {\n\t\t\t\t\t\tdata: getTypedArray( image.type, image.data ),\n\t\t\t\t\t\twidth: image.width,\n\t\t\t\t\t\theight: image.height\n\t\t\t\t\t};\n\n\t\t\t\t} else {\n\n\t\t\t\t\treturn null;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( json !== undefined && json.length > 0 ) {\n\n\t\t\tconst manager = new LoadingManager( onLoad );\n\n\t\t\tloader = new ImageLoader( manager );\n\t\t\tloader.setCrossOrigin( this.crossOrigin );\n\n\t\t\tfor ( let i = 0, il = json.length; i < il; i ++ ) {\n\n\t\t\t\tconst image = json[ i ];\n\t\t\t\tconst url = image.url;\n\n\t\t\t\tif ( Array.isArray( url ) ) {\n\n\t\t\t\t\t// load array of images e.g CubeTexture\n\n\t\t\t\t\timages[ image.uuid ] = [];\n\n\t\t\t\t\tfor ( let j = 0, jl = url.length; j < jl; j ++ ) {\n\n\t\t\t\t\t\tconst currentUrl = url[ j ];\n\n\t\t\t\t\t\tconst deserializedImage = deserializeImage( currentUrl );\n\n\t\t\t\t\t\tif ( deserializedImage !== null ) {\n\n\t\t\t\t\t\t\tif ( deserializedImage instanceof HTMLImageElement ) {\n\n\t\t\t\t\t\t\t\timages[ image.uuid ].push( deserializedImage );\n\n\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\t// special case: handle array of data textures for cube textures\n\n\t\t\t\t\t\t\t\timages[ image.uuid ].push( new DataTexture( deserializedImage.data, deserializedImage.width, deserializedImage.height ) );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// load single image\n\n\t\t\t\t\tconst deserializedImage = deserializeImage( image.url );\n\n\t\t\t\t\tif ( deserializedImage !== null ) {\n\n\t\t\t\t\t\timages[ image.uuid ] = deserializedImage;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn images;\n\n\t}\n\n\tparseTextures( json, images ) {\n\n\t\tfunction parseConstant( value, type ) {\n\n\t\t\tif ( typeof value === 'number' ) return value;\n\n\t\t\tconsole.warn( 'THREE.ObjectLoader.parseTexture: Constant should be in numeric form.', value );\n\n\t\t\treturn type[ value ];\n\n\t\t}\n\n\t\tconst textures = {};\n\n\t\tif ( json !== undefined ) {\n\n\t\t\tfor ( let i = 0, l = json.length; i < l; i ++ ) {\n\n\t\t\t\tconst data = json[ i ];\n\n\t\t\t\tif ( data.image === undefined ) {\n\n\t\t\t\t\tconsole.warn( 'THREE.ObjectLoader: No \"image\" specified for', data.uuid );\n\n\t\t\t\t}\n\n\t\t\t\tif ( images[ data.image ] === undefined ) {\n\n\t\t\t\t\tconsole.warn( 'THREE.ObjectLoader: Undefined image', data.image );\n\n\t\t\t\t}\n\n\t\t\t\tlet texture;\n\t\t\t\tconst image = images[ data.image ];\n\n\t\t\t\tif ( Array.isArray( image ) ) {\n\n\t\t\t\t\ttexture = new CubeTexture( image );\n\n\t\t\t\t\tif ( image.length === 6 ) texture.needsUpdate = true;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tif ( image && image.data ) {\n\n\t\t\t\t\t\ttexture = new DataTexture( image.data, image.width, image.height );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\ttexture = new Texture( image );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( image ) texture.needsUpdate = true; // textures can have undefined image data\n\n\t\t\t\t}\n\n\t\t\t\ttexture.uuid = data.uuid;\n\n\t\t\t\tif ( data.name !== undefined ) texture.name = data.name;\n\n\t\t\t\tif ( data.mapping !== undefined ) texture.mapping = parseConstant( data.mapping, TEXTURE_MAPPING );\n\n\t\t\t\tif ( data.offset !== undefined ) texture.offset.fromArray( data.offset );\n\t\t\t\tif ( data.repeat !== undefined ) texture.repeat.fromArray( data.repeat );\n\t\t\t\tif ( data.center !== undefined ) texture.center.fromArray( data.center );\n\t\t\t\tif ( data.rotation !== undefined ) texture.rotation = data.rotation;\n\n\t\t\t\tif ( data.wrap !== undefined ) {\n\n\t\t\t\t\ttexture.wrapS = parseConstant( data.wrap[ 0 ], TEXTURE_WRAPPING );\n\t\t\t\t\ttexture.wrapT = parseConstant( data.wrap[ 1 ], TEXTURE_WRAPPING );\n\n\t\t\t\t}\n\n\t\t\t\tif ( data.format !== undefined ) texture.format = data.format;\n\t\t\t\tif ( data.type !== undefined ) texture.type = data.type;\n\t\t\t\tif ( data.encoding !== undefined ) texture.encoding = data.encoding;\n\n\t\t\t\tif ( data.minFilter !== undefined ) texture.minFilter = parseConstant( data.minFilter, TEXTURE_FILTER );\n\t\t\t\tif ( data.magFilter !== undefined ) texture.magFilter = parseConstant( data.magFilter, TEXTURE_FILTER );\n\t\t\t\tif ( data.anisotropy !== undefined ) texture.anisotropy = data.anisotropy;\n\n\t\t\t\tif ( data.flipY !== undefined ) texture.flipY = data.flipY;\n\n\t\t\t\tif ( data.premultiplyAlpha !== undefined ) texture.premultiplyAlpha = data.premultiplyAlpha;\n\t\t\t\tif ( data.unpackAlignment !== undefined ) texture.unpackAlignment = data.unpackAlignment;\n\n\t\t\t\ttextures[ data.uuid ] = texture;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn textures;\n\n\t}\n\n\tparseObject( data, geometries, materials, animations ) {\n\n\t\tlet object;\n\n\t\tfunction getGeometry( name ) {\n\n\t\t\tif ( geometries[ name ] === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.ObjectLoader: Undefined geometry', name );\n\n\t\t\t}\n\n\t\t\treturn geometries[ name ];\n\n\t\t}\n\n\t\tfunction getMaterial( name ) {\n\n\t\t\tif ( name === undefined ) return undefined;\n\n\t\t\tif ( Array.isArray( name ) ) {\n\n\t\t\t\tconst array = [];\n\n\t\t\t\tfor ( let i = 0, l = name.length; i < l; i ++ ) {\n\n\t\t\t\t\tconst uuid = name[ i ];\n\n\t\t\t\t\tif ( materials[ uuid ] === undefined ) {\n\n\t\t\t\t\t\tconsole.warn( 'THREE.ObjectLoader: Undefined material', uuid );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tarray.push( materials[ uuid ] );\n\n\t\t\t\t}\n\n\t\t\t\treturn array;\n\n\t\t\t}\n\n\t\t\tif ( materials[ name ] === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.ObjectLoader: Undefined material', name );\n\n\t\t\t}\n\n\t\t\treturn materials[ name ];\n\n\t\t}\n\n\t\tlet geometry, material;\n\n\t\tswitch ( data.type ) {\n\n\t\t\tcase 'Scene':\n\n\t\t\t\tobject = new Scene();\n\n\t\t\t\tif ( data.background !== undefined ) {\n\n\t\t\t\t\tif ( Number.isInteger( data.background ) ) {\n\n\t\t\t\t\t\tobject.background = new Color( data.background );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tif ( data.fog !== undefined ) {\n\n\t\t\t\t\tif ( data.fog.type === 'Fog' ) {\n\n\t\t\t\t\t\tobject.fog = new Fog( data.fog.color, data.fog.near, data.fog.far );\n\n\t\t\t\t\t} else if ( data.fog.type === 'FogExp2' ) {\n\n\t\t\t\t\t\tobject.fog = new FogExp2( data.fog.color, data.fog.density );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'PerspectiveCamera':\n\n\t\t\t\tobject = new PerspectiveCamera( data.fov, data.aspect, data.near, data.far );\n\n\t\t\t\tif ( data.focus !== undefined ) object.focus = data.focus;\n\t\t\t\tif ( data.zoom !== undefined ) object.zoom = data.zoom;\n\t\t\t\tif ( data.filmGauge !== undefined ) object.filmGauge = data.filmGauge;\n\t\t\t\tif ( data.filmOffset !== undefined ) object.filmOffset = data.filmOffset;\n\t\t\t\tif ( data.view !== undefined ) object.view = Object.assign( {}, data.view );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'OrthographicCamera':\n\n\t\t\t\tobject = new OrthographicCamera( data.left, data.right, data.top, data.bottom, data.near, data.far );\n\n\t\t\t\tif ( data.zoom !== undefined ) object.zoom = data.zoom;\n\t\t\t\tif ( data.view !== undefined ) object.view = Object.assign( {}, data.view );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'AmbientLight':\n\n\t\t\t\tobject = new AmbientLight( data.color, data.intensity );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'DirectionalLight':\n\n\t\t\t\tobject = new DirectionalLight( data.color, data.intensity );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'PointLight':\n\n\t\t\t\tobject = new PointLight( data.color, data.intensity, data.distance, data.decay );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'RectAreaLight':\n\n\t\t\t\tobject = new RectAreaLight( data.color, data.intensity, data.width, data.height );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'SpotLight':\n\n\t\t\t\tobject = new SpotLight( data.color, data.intensity, data.distance, data.angle, data.penumbra, data.decay );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'HemisphereLight':\n\n\t\t\t\tobject = new HemisphereLight( data.color, data.groundColor, data.intensity );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'LightProbe':\n\n\t\t\t\tobject = new LightProbe().fromJSON( data );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'SkinnedMesh':\n\n\t\t\t\tgeometry = getGeometry( data.geometry );\n\t\t\t \tmaterial = getMaterial( data.material );\n\n\t\t\t\tobject = new SkinnedMesh( geometry, material );\n\n\t\t\t\tif ( data.bindMode !== undefined ) object.bindMode = data.bindMode;\n\t\t\t\tif ( data.bindMatrix !== undefined ) object.bindMatrix.fromArray( data.bindMatrix );\n\t\t\t\tif ( data.skeleton !== undefined ) object.skeleton = data.skeleton;\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'Mesh':\n\n\t\t\t\tgeometry = getGeometry( data.geometry );\n\t\t\t\tmaterial = getMaterial( data.material );\n\n\t\t\t\tobject = new Mesh( geometry, material );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'InstancedMesh':\n\n\t\t\t\tgeometry = getGeometry( data.geometry );\n\t\t\t\tmaterial = getMaterial( data.material );\n\t\t\t\tconst count = data.count;\n\t\t\t\tconst instanceMatrix = data.instanceMatrix;\n\n\t\t\t\tobject = new InstancedMesh( geometry, material, count );\n\t\t\t\tobject.instanceMatrix = new BufferAttribute( new Float32Array( instanceMatrix.array ), 16 );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'LOD':\n\n\t\t\t\tobject = new LOD();\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'Line':\n\n\t\t\t\tobject = new Line( getGeometry( data.geometry ), getMaterial( data.material ) );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'LineLoop':\n\n\t\t\t\tobject = new LineLoop( getGeometry( data.geometry ), getMaterial( data.material ) );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'LineSegments':\n\n\t\t\t\tobject = new LineSegments( getGeometry( data.geometry ), getMaterial( data.material ) );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'PointCloud':\n\t\t\tcase 'Points':\n\n\t\t\t\tobject = new Points( getGeometry( data.geometry ), getMaterial( data.material ) );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'Sprite':\n\n\t\t\t\tobject = new Sprite( getMaterial( data.material ) );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'Group':\n\n\t\t\t\tobject = new Group();\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'Bone':\n\n\t\t\t\tobject = new Bone();\n\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\n\t\t\t\tobject = new Object3D();\n\n\t\t}\n\n\t\tobject.uuid = data.uuid;\n\n\t\tif ( data.name !== undefined ) object.name = data.name;\n\n\t\tif ( data.matrix !== undefined ) {\n\n\t\t\tobject.matrix.fromArray( data.matrix );\n\n\t\t\tif ( data.matrixAutoUpdate !== undefined ) object.matrixAutoUpdate = data.matrixAutoUpdate;\n\t\t\tif ( object.matrixAutoUpdate ) object.matrix.decompose( object.position, object.quaternion, object.scale );\n\n\t\t} else {\n\n\t\t\tif ( data.position !== undefined ) object.position.fromArray( data.position );\n\t\t\tif ( data.rotation !== undefined ) object.rotation.fromArray( data.rotation );\n\t\t\tif ( data.quaternion !== undefined ) object.quaternion.fromArray( data.quaternion );\n\t\t\tif ( data.scale !== undefined ) object.scale.fromArray( data.scale );\n\n\t\t}\n\n\t\tif ( data.castShadow !== undefined ) object.castShadow = data.castShadow;\n\t\tif ( data.receiveShadow !== undefined ) object.receiveShadow = data.receiveShadow;\n\n\t\tif ( data.shadow ) {\n\n\t\t\tif ( data.shadow.bias !== undefined ) object.shadow.bias = data.shadow.bias;\n\t\t\tif ( data.shadow.normalBias !== undefined ) object.shadow.normalBias = data.shadow.normalBias;\n\t\t\tif ( data.shadow.radius !== undefined ) object.shadow.radius = data.shadow.radius;\n\t\t\tif ( data.shadow.mapSize !== undefined ) object.shadow.mapSize.fromArray( data.shadow.mapSize );\n\t\t\tif ( data.shadow.camera !== undefined ) object.shadow.camera = this.parseObject( data.shadow.camera );\n\n\t\t}\n\n\t\tif ( data.visible !== undefined ) object.visible = data.visible;\n\t\tif ( data.frustumCulled !== undefined ) object.frustumCulled = data.frustumCulled;\n\t\tif ( data.renderOrder !== undefined ) object.renderOrder = data.renderOrder;\n\t\tif ( data.userData !== undefined ) object.userData = data.userData;\n\t\tif ( data.layers !== undefined ) object.layers.mask = data.layers;\n\n\t\tif ( data.children !== undefined ) {\n\n\t\t\tconst children = data.children;\n\n\t\t\tfor ( let i = 0; i < children.length; i ++ ) {\n\n\t\t\t\tobject.add( this.parseObject( children[ i ], geometries, materials, animations ) );\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( data.animations !== undefined ) {\n\n\t\t\tconst objectAnimations = data.animations;\n\n\t\t\tfor ( let i = 0; i < objectAnimations.length; i ++ ) {\n\n\t\t\t\tconst uuid = objectAnimations[ i ];\n\n\t\t\t\tobject.animations.push( animations[ uuid ] );\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( data.type === 'LOD' ) {\n\n\t\t\tif ( data.autoUpdate !== undefined ) object.autoUpdate = data.autoUpdate;\n\n\t\t\tconst levels = data.levels;\n\n\t\t\tfor ( let l = 0; l < levels.length; l ++ ) {\n\n\t\t\t\tconst level = levels[ l ];\n\t\t\t\tconst child = object.getObjectByProperty( 'uuid', level.object );\n\n\t\t\t\tif ( child !== undefined ) {\n\n\t\t\t\t\tobject.addLevel( child, level.distance );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn object;\n\n\t}\n\n\tbindSkeletons( object, skeletons ) {\n\n\t\tif ( Object.keys( skeletons ).length === 0 ) return;\n\n\t\tobject.traverse( function ( child ) {\n\n\t\t\tif ( child.isSkinnedMesh === true && child.skeleton !== undefined ) {\n\n\t\t\t\tconst skeleton = skeletons[ child.skeleton ];\n\n\t\t\t\tif ( skeleton === undefined ) {\n\n\t\t\t\t\tconsole.warn( 'THREE.ObjectLoader: No skeleton found with UUID:', child.skeleton );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tchild.bind( skeleton, child.bindMatrix );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} );\n\n\t}\n\n\t/* DEPRECATED */\n\n\tsetTexturePath( value ) {\n\n\t\tconsole.warn( 'THREE.ObjectLoader: .setTexturePath() has been renamed to .setResourcePath().' );\n\t\treturn this.setResourcePath( value );\n\n\t}\n\n}\n\nconst TEXTURE_MAPPING = {\n\tUVMapping: UVMapping,\n\tCubeReflectionMapping: CubeReflectionMapping,\n\tCubeRefractionMapping: CubeRefractionMapping,\n\tEquirectangularReflectionMapping: EquirectangularReflectionMapping,\n\tEquirectangularRefractionMapping: EquirectangularRefractionMapping,\n\tCubeUVReflectionMapping: CubeUVReflectionMapping,\n\tCubeUVRefractionMapping: CubeUVRefractionMapping\n};\n\nconst TEXTURE_WRAPPING = {\n\tRepeatWrapping: RepeatWrapping,\n\tClampToEdgeWrapping: ClampToEdgeWrapping,\n\tMirroredRepeatWrapping: MirroredRepeatWrapping\n};\n\nconst TEXTURE_FILTER = {\n\tNearestFilter: NearestFilter,\n\tNearestMipmapNearestFilter: NearestMipmapNearestFilter,\n\tNearestMipmapLinearFilter: NearestMipmapLinearFilter,\n\tLinearFilter: LinearFilter,\n\tLinearMipmapNearestFilter: LinearMipmapNearestFilter,\n\tLinearMipmapLinearFilter: LinearMipmapLinearFilter\n};\n\nfunction ImageBitmapLoader( manager ) {\n\n\tif ( typeof createImageBitmap === 'undefined' ) {\n\n\t\tconsole.warn( 'THREE.ImageBitmapLoader: createImageBitmap() not supported.' );\n\n\t}\n\n\tif ( typeof fetch === 'undefined' ) {\n\n\t\tconsole.warn( 'THREE.ImageBitmapLoader: fetch() not supported.' );\n\n\t}\n\n\tLoader.call( this, manager );\n\n\tthis.options = { premultiplyAlpha: 'none' };\n\n}\n\nImageBitmapLoader.prototype = Object.assign( Object.create( Loader.prototype ), {\n\n\tconstructor: ImageBitmapLoader,\n\n\tisImageBitmapLoader: true,\n\n\tsetOptions: function setOptions( options ) {\n\n\t\tthis.options = options;\n\n\t\treturn this;\n\n\t},\n\n\tload: function ( url, onLoad, onProgress, onError ) {\n\n\t\tif ( url === undefined ) url = '';\n\n\t\tif ( this.path !== undefined ) url = this.path + url;\n\n\t\turl = this.manager.resolveURL( url );\n\n\t\tconst scope = this;\n\n\t\tconst cached = Cache.get( url );\n\n\t\tif ( cached !== undefined ) {\n\n\t\t\tscope.manager.itemStart( url );\n\n\t\t\tsetTimeout( function () {\n\n\t\t\t\tif ( onLoad ) onLoad( cached );\n\n\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t}, 0 );\n\n\t\t\treturn cached;\n\n\t\t}\n\n\t\tconst fetchOptions = {};\n\t\tfetchOptions.credentials = ( this.crossOrigin === 'anonymous' ) ? 'same-origin' : 'include';\n\n\t\tfetch( url, fetchOptions ).then( function ( res ) {\n\n\t\t\treturn res.blob();\n\n\t\t} ).then( function ( blob ) {\n\n\t\t\treturn createImageBitmap( blob, scope.options );\n\n\t\t} ).then( function ( imageBitmap ) {\n\n\t\t\tCache.add( url, imageBitmap );\n\n\t\t\tif ( onLoad ) onLoad( imageBitmap );\n\n\t\t\tscope.manager.itemEnd( url );\n\n\t\t} ).catch( function ( e ) {\n\n\t\t\tif ( onError ) onError( e );\n\n\t\t\tscope.manager.itemError( url );\n\t\t\tscope.manager.itemEnd( url );\n\n\t\t} );\n\n\t\tscope.manager.itemStart( url );\n\n\t}\n\n} );\n\nfunction ShapePath() {\n\n\tthis.type = 'ShapePath';\n\n\tthis.color = new Color();\n\n\tthis.subPaths = [];\n\tthis.currentPath = null;\n\n}\n\nObject.assign( ShapePath.prototype, {\n\n\tmoveTo: function ( x, y ) {\n\n\t\tthis.currentPath = new Path();\n\t\tthis.subPaths.push( this.currentPath );\n\t\tthis.currentPath.moveTo( x, y );\n\n\t\treturn this;\n\n\t},\n\n\tlineTo: function ( x, y ) {\n\n\t\tthis.currentPath.lineTo( x, y );\n\n\t\treturn this;\n\n\t},\n\n\tquadraticCurveTo: function ( aCPx, aCPy, aX, aY ) {\n\n\t\tthis.currentPath.quadraticCurveTo( aCPx, aCPy, aX, aY );\n\n\t\treturn this;\n\n\t},\n\n\tbezierCurveTo: function ( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY ) {\n\n\t\tthis.currentPath.bezierCurveTo( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY );\n\n\t\treturn this;\n\n\t},\n\n\tsplineThru: function ( pts ) {\n\n\t\tthis.currentPath.splineThru( pts );\n\n\t\treturn this;\n\n\t},\n\n\ttoShapes: function ( isCCW, noHoles ) {\n\n\t\tfunction toShapesNoHoles( inSubpaths ) {\n\n\t\t\tconst shapes = [];\n\n\t\t\tfor ( let i = 0, l = inSubpaths.length; i < l; i ++ ) {\n\n\t\t\t\tconst tmpPath = inSubpaths[ i ];\n\n\t\t\t\tconst tmpShape = new Shape();\n\t\t\t\ttmpShape.curves = tmpPath.curves;\n\n\t\t\t\tshapes.push( tmpShape );\n\n\t\t\t}\n\n\t\t\treturn shapes;\n\n\t\t}\n\n\t\tfunction isPointInsidePolygon( inPt, inPolygon ) {\n\n\t\t\tconst polyLen = inPolygon.length;\n\n\t\t\t// inPt on polygon contour => immediate success    or\n\t\t\t// toggling of inside/outside at every single! intersection point of an edge\n\t\t\t//  with the horizontal line through inPt, left of inPt\n\t\t\t//  not counting lowerY endpoints of edges and whole edges on that line\n\t\t\tlet inside = false;\n\t\t\tfor ( let p = polyLen - 1, q = 0; q < polyLen; p = q ++ ) {\n\n\t\t\t\tlet edgeLowPt = inPolygon[ p ];\n\t\t\t\tlet edgeHighPt = inPolygon[ q ];\n\n\t\t\t\tlet edgeDx = edgeHighPt.x - edgeLowPt.x;\n\t\t\t\tlet edgeDy = edgeHighPt.y - edgeLowPt.y;\n\n\t\t\t\tif ( Math.abs( edgeDy ) > Number.EPSILON ) {\n\n\t\t\t\t\t// not parallel\n\t\t\t\t\tif ( edgeDy < 0 ) {\n\n\t\t\t\t\t\tedgeLowPt = inPolygon[ q ]; edgeDx = - edgeDx;\n\t\t\t\t\t\tedgeHighPt = inPolygon[ p ]; edgeDy = - edgeDy;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( ( inPt.y < edgeLowPt.y ) || ( inPt.y > edgeHighPt.y ) ) \t\tcontinue;\n\n\t\t\t\t\tif ( inPt.y === edgeLowPt.y ) {\n\n\t\t\t\t\t\tif ( inPt.x === edgeLowPt.x )\t\treturn\ttrue;\t\t// inPt is on contour ?\n\t\t\t\t\t\t// continue;\t\t\t\t// no intersection or edgeLowPt => doesn't count !!!\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tconst perpEdge = edgeDy * ( inPt.x - edgeLowPt.x ) - edgeDx * ( inPt.y - edgeLowPt.y );\n\t\t\t\t\t\tif ( perpEdge === 0 )\t\t\t\treturn\ttrue;\t\t// inPt is on contour ?\n\t\t\t\t\t\tif ( perpEdge < 0 ) \t\t\t\tcontinue;\n\t\t\t\t\t\tinside = ! inside;\t\t// true intersection left of inPt\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// parallel or collinear\n\t\t\t\t\tif ( inPt.y !== edgeLowPt.y ) \t\tcontinue;\t\t\t// parallel\n\t\t\t\t\t// edge lies on the same horizontal line as inPt\n\t\t\t\t\tif ( ( ( edgeHighPt.x <= inPt.x ) && ( inPt.x <= edgeLowPt.x ) ) ||\n\t\t\t\t\t\t ( ( edgeLowPt.x <= inPt.x ) && ( inPt.x <= edgeHighPt.x ) ) )\t\treturn\ttrue;\t// inPt: Point on contour !\n\t\t\t\t\t// continue;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\treturn\tinside;\n\n\t\t}\n\n\t\tconst isClockWise = ShapeUtils.isClockWise;\n\n\t\tconst subPaths = this.subPaths;\n\t\tif ( subPaths.length === 0 ) return [];\n\n\t\tif ( noHoles === true )\treturn\ttoShapesNoHoles( subPaths );\n\n\n\t\tlet solid, tmpPath, tmpShape;\n\t\tconst shapes = [];\n\n\t\tif ( subPaths.length === 1 ) {\n\n\t\t\ttmpPath = subPaths[ 0 ];\n\t\t\ttmpShape = new Shape();\n\t\t\ttmpShape.curves = tmpPath.curves;\n\t\t\tshapes.push( tmpShape );\n\t\t\treturn shapes;\n\n\t\t}\n\n\t\tlet holesFirst = ! isClockWise( subPaths[ 0 ].getPoints() );\n\t\tholesFirst = isCCW ? ! holesFirst : holesFirst;\n\n\t\t// console.log(\"Holes first\", holesFirst);\n\n\t\tconst betterShapeHoles = [];\n\t\tconst newShapes = [];\n\t\tlet newShapeHoles = [];\n\t\tlet mainIdx = 0;\n\t\tlet tmpPoints;\n\n\t\tnewShapes[ mainIdx ] = undefined;\n\t\tnewShapeHoles[ mainIdx ] = [];\n\n\t\tfor ( let i = 0, l = subPaths.length; i < l; i ++ ) {\n\n\t\t\ttmpPath = subPaths[ i ];\n\t\t\ttmpPoints = tmpPath.getPoints();\n\t\t\tsolid = isClockWise( tmpPoints );\n\t\t\tsolid = isCCW ? ! solid : solid;\n\n\t\t\tif ( solid ) {\n\n\t\t\t\tif ( ( ! holesFirst ) && ( newShapes[ mainIdx ] ) )\tmainIdx ++;\n\n\t\t\t\tnewShapes[ mainIdx ] = { s: new Shape(), p: tmpPoints };\n\t\t\t\tnewShapes[ mainIdx ].s.curves = tmpPath.curves;\n\n\t\t\t\tif ( holesFirst )\tmainIdx ++;\n\t\t\t\tnewShapeHoles[ mainIdx ] = [];\n\n\t\t\t\t//console.log('cw', i);\n\n\t\t\t} else {\n\n\t\t\t\tnewShapeHoles[ mainIdx ].push( { h: tmpPath, p: tmpPoints[ 0 ] } );\n\n\t\t\t\t//console.log('ccw', i);\n\n\t\t\t}\n\n\t\t}\n\n\t\t// only Holes? -> probably all Shapes with wrong orientation\n\t\tif ( ! newShapes[ 0 ] )\treturn\ttoShapesNoHoles( subPaths );\n\n\n\t\tif ( newShapes.length > 1 ) {\n\n\t\t\tlet ambiguous = false;\n\t\t\tconst toChange = [];\n\n\t\t\tfor ( let sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx ++ ) {\n\n\t\t\t\tbetterShapeHoles[ sIdx ] = [];\n\n\t\t\t}\n\n\t\t\tfor ( let sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx ++ ) {\n\n\t\t\t\tconst sho = newShapeHoles[ sIdx ];\n\n\t\t\t\tfor ( let hIdx = 0; hIdx < sho.length; hIdx ++ ) {\n\n\t\t\t\t\tconst ho = sho[ hIdx ];\n\t\t\t\t\tlet hole_unassigned = true;\n\n\t\t\t\t\tfor ( let s2Idx = 0; s2Idx < newShapes.length; s2Idx ++ ) {\n\n\t\t\t\t\t\tif ( isPointInsidePolygon( ho.p, newShapes[ s2Idx ].p ) ) {\n\n\t\t\t\t\t\t\tif ( sIdx !== s2Idx )\ttoChange.push( { froms: sIdx, tos: s2Idx, hole: hIdx } );\n\t\t\t\t\t\t\tif ( hole_unassigned ) {\n\n\t\t\t\t\t\t\t\thole_unassigned = false;\n\t\t\t\t\t\t\t\tbetterShapeHoles[ s2Idx ].push( ho );\n\n\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\tambiguous = true;\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( hole_unassigned ) {\n\n\t\t\t\t\t\tbetterShapeHoles[ sIdx ].push( ho );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\t\t\t// console.log(\"ambiguous: \", ambiguous);\n\n\t\t\tif ( toChange.length > 0 ) {\n\n\t\t\t\t// console.log(\"to change: \", toChange);\n\t\t\t\tif ( ! ambiguous )\tnewShapeHoles = betterShapeHoles;\n\n\t\t\t}\n\n\t\t}\n\n\t\tlet tmpHoles;\n\n\t\tfor ( let i = 0, il = newShapes.length; i < il; i ++ ) {\n\n\t\t\ttmpShape = newShapes[ i ].s;\n\t\t\tshapes.push( tmpShape );\n\t\t\ttmpHoles = newShapeHoles[ i ];\n\n\t\t\tfor ( let j = 0, jl = tmpHoles.length; j < jl; j ++ ) {\n\n\t\t\t\ttmpShape.holes.push( tmpHoles[ j ].h );\n\n\t\t\t}\n\n\t\t}\n\n\t\t//console.log(\"shape\", shapes);\n\n\t\treturn shapes;\n\n\t}\n\n} );\n\nfunction Font( data ) {\n\n\tthis.type = 'Font';\n\n\tthis.data = data;\n\n}\n\nObject.assign( Font.prototype, {\n\n\tisFont: true,\n\n\tgenerateShapes: function ( text, size = 100 ) {\n\n\t\tconst shapes = [];\n\t\tconst paths = createPaths( text, size, this.data );\n\n\t\tfor ( let p = 0, pl = paths.length; p < pl; p ++ ) {\n\n\t\t\tArray.prototype.push.apply( shapes, paths[ p ].toShapes() );\n\n\t\t}\n\n\t\treturn shapes;\n\n\t}\n\n} );\n\nfunction createPaths( text, size, data ) {\n\n\tconst chars = Array.from ? Array.from( text ) : String( text ).split( '' ); // workaround for IE11, see #13988\n\tconst scale = size / data.resolution;\n\tconst line_height = ( data.boundingBox.yMax - data.boundingBox.yMin + data.underlineThickness ) * scale;\n\n\tconst paths = [];\n\n\tlet offsetX = 0, offsetY = 0;\n\n\tfor ( let i = 0; i < chars.length; i ++ ) {\n\n\t\tconst char = chars[ i ];\n\n\t\tif ( char === '\\n' ) {\n\n\t\t\toffsetX = 0;\n\t\t\toffsetY -= line_height;\n\n\t\t} else {\n\n\t\t\tconst ret = createPath( char, scale, offsetX, offsetY, data );\n\t\t\toffsetX += ret.offsetX;\n\t\t\tpaths.push( ret.path );\n\n\t\t}\n\n\t}\n\n\treturn paths;\n\n}\n\nfunction createPath( char, scale, offsetX, offsetY, data ) {\n\n\tconst glyph = data.glyphs[ char ] || data.glyphs[ '?' ];\n\n\tif ( ! glyph ) {\n\n\t\tconsole.error( 'THREE.Font: character \"' + char + '\" does not exists in font family ' + data.familyName + '.' );\n\n\t\treturn;\n\n\t}\n\n\tconst path = new ShapePath();\n\n\tlet x, y, cpx, cpy, cpx1, cpy1, cpx2, cpy2;\n\n\tif ( glyph.o ) {\n\n\t\tconst outline = glyph._cachedOutline || ( glyph._cachedOutline = glyph.o.split( ' ' ) );\n\n\t\tfor ( let i = 0, l = outline.length; i < l; ) {\n\n\t\t\tconst action = outline[ i ++ ];\n\n\t\t\tswitch ( action ) {\n\n\t\t\t\tcase 'm': // moveTo\n\n\t\t\t\t\tx = outline[ i ++ ] * scale + offsetX;\n\t\t\t\t\ty = outline[ i ++ ] * scale + offsetY;\n\n\t\t\t\t\tpath.moveTo( x, y );\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'l': // lineTo\n\n\t\t\t\t\tx = outline[ i ++ ] * scale + offsetX;\n\t\t\t\t\ty = outline[ i ++ ] * scale + offsetY;\n\n\t\t\t\t\tpath.lineTo( x, y );\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'q': // quadraticCurveTo\n\n\t\t\t\t\tcpx = outline[ i ++ ] * scale + offsetX;\n\t\t\t\t\tcpy = outline[ i ++ ] * scale + offsetY;\n\t\t\t\t\tcpx1 = outline[ i ++ ] * scale + offsetX;\n\t\t\t\t\tcpy1 = outline[ i ++ ] * scale + offsetY;\n\n\t\t\t\t\tpath.quadraticCurveTo( cpx1, cpy1, cpx, cpy );\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'b': // bezierCurveTo\n\n\t\t\t\t\tcpx = outline[ i ++ ] * scale + offsetX;\n\t\t\t\t\tcpy = outline[ i ++ ] * scale + offsetY;\n\t\t\t\t\tcpx1 = outline[ i ++ ] * scale + offsetX;\n\t\t\t\t\tcpy1 = outline[ i ++ ] * scale + offsetY;\n\t\t\t\t\tcpx2 = outline[ i ++ ] * scale + offsetX;\n\t\t\t\t\tcpy2 = outline[ i ++ ] * scale + offsetY;\n\n\t\t\t\t\tpath.bezierCurveTo( cpx1, cpy1, cpx2, cpy2, cpx, cpy );\n\n\t\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\treturn { offsetX: glyph.ha * scale, path: path };\n\n}\n\nfunction FontLoader( manager ) {\n\n\tLoader.call( this, manager );\n\n}\n\nFontLoader.prototype = Object.assign( Object.create( Loader.prototype ), {\n\n\tconstructor: FontLoader,\n\n\tload: function ( url, onLoad, onProgress, onError ) {\n\n\t\tconst scope = this;\n\n\t\tconst loader = new FileLoader( this.manager );\n\t\tloader.setPath( this.path );\n\t\tloader.setRequestHeader( this.requestHeader );\n\t\tloader.setWithCredentials( scope.withCredentials );\n\t\tloader.load( url, function ( text ) {\n\n\t\t\tlet json;\n\n\t\t\ttry {\n\n\t\t\t\tjson = JSON.parse( text );\n\n\t\t\t} catch ( e ) {\n\n\t\t\t\tconsole.warn( 'THREE.FontLoader: typeface.js support is being deprecated. Use typeface.json instead.' );\n\t\t\t\tjson = JSON.parse( text.substring( 65, text.length - 2 ) );\n\n\t\t\t}\n\n\t\t\tconst font = scope.parse( json );\n\n\t\t\tif ( onLoad ) onLoad( font );\n\n\t\t}, onProgress, onError );\n\n\t},\n\n\tparse: function ( json ) {\n\n\t\treturn new Font( json );\n\n\t}\n\n} );\n\nlet _context;\n\nconst AudioContext = {\n\n\tgetContext: function () {\n\n\t\tif ( _context === undefined ) {\n\n\t\t\t_context = new ( window.AudioContext || window.webkitAudioContext )();\n\n\t\t}\n\n\t\treturn _context;\n\n\t},\n\n\tsetContext: function ( value ) {\n\n\t\t_context = value;\n\n\t}\n\n};\n\nfunction AudioLoader( manager ) {\n\n\tLoader.call( this, manager );\n\n}\n\nAudioLoader.prototype = Object.assign( Object.create( Loader.prototype ), {\n\n\tconstructor: AudioLoader,\n\n\tload: function ( url, onLoad, onProgress, onError ) {\n\n\t\tconst scope = this;\n\n\t\tconst loader = new FileLoader( scope.manager );\n\t\tloader.setResponseType( 'arraybuffer' );\n\t\tloader.setPath( scope.path );\n\t\tloader.setRequestHeader( scope.requestHeader );\n\t\tloader.setWithCredentials( scope.withCredentials );\n\t\tloader.load( url, function ( buffer ) {\n\n\t\t\ttry {\n\n\t\t\t\t// Create a copy of the buffer. The `decodeAudioData` method\n\t\t\t\t// detaches the buffer when complete, preventing reuse.\n\t\t\t\tconst bufferCopy = buffer.slice( 0 );\n\n\t\t\t\tconst context = AudioContext.getContext();\n\t\t\t\tcontext.decodeAudioData( bufferCopy, function ( audioBuffer ) {\n\n\t\t\t\t\tonLoad( audioBuffer );\n\n\t\t\t\t} );\n\n\t\t\t} catch ( e ) {\n\n\t\t\t\tif ( onError ) {\n\n\t\t\t\t\tonError( e );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.error( e );\n\n\t\t\t\t}\n\n\t\t\t\tscope.manager.itemError( url );\n\n\t\t\t}\n\n\t\t}, onProgress, onError );\n\n\t}\n\n} );\n\nfunction HemisphereLightProbe( skyColor, groundColor, intensity ) {\n\n\tLightProbe.call( this, undefined, intensity );\n\n\tconst color1 = new Color().set( skyColor );\n\tconst color2 = new Color().set( groundColor );\n\n\tconst sky = new Vector3( color1.r, color1.g, color1.b );\n\tconst ground = new Vector3( color2.r, color2.g, color2.b );\n\n\t// without extra factor of PI in the shader, should = 1 / Math.sqrt( Math.PI );\n\tconst c0 = Math.sqrt( Math.PI );\n\tconst c1 = c0 * Math.sqrt( 0.75 );\n\n\tthis.sh.coefficients[ 0 ].copy( sky ).add( ground ).multiplyScalar( c0 );\n\tthis.sh.coefficients[ 1 ].copy( sky ).sub( ground ).multiplyScalar( c1 );\n\n}\n\nHemisphereLightProbe.prototype = Object.assign( Object.create( LightProbe.prototype ), {\n\n\tconstructor: HemisphereLightProbe,\n\n\tisHemisphereLightProbe: true,\n\n\tcopy: function ( source ) { // modifying colors not currently supported\n\n\t\tLightProbe.prototype.copy.call( this, source );\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function ( meta ) {\n\n\t\tconst data = LightProbe.prototype.toJSON.call( this, meta );\n\n\t\t// data.sh = this.sh.toArray(); // todo\n\n\t\treturn data;\n\n\t}\n\n} );\n\nfunction AmbientLightProbe( color, intensity ) {\n\n\tLightProbe.call( this, undefined, intensity );\n\n\tconst color1 = new Color().set( color );\n\n\t// without extra factor of PI in the shader, would be 2 / Math.sqrt( Math.PI );\n\tthis.sh.coefficients[ 0 ].set( color1.r, color1.g, color1.b ).multiplyScalar( 2 * Math.sqrt( Math.PI ) );\n\n}\n\nAmbientLightProbe.prototype = Object.assign( Object.create( LightProbe.prototype ), {\n\n\tconstructor: AmbientLightProbe,\n\n\tisAmbientLightProbe: true,\n\n\tcopy: function ( source ) { // modifying color not currently supported\n\n\t\tLightProbe.prototype.copy.call( this, source );\n\n\t\treturn this;\n\n\t},\n\n\ttoJSON: function ( meta ) {\n\n\t\tconst data = LightProbe.prototype.toJSON.call( this, meta );\n\n\t\t// data.sh = this.sh.toArray(); // todo\n\n\t\treturn data;\n\n\t}\n\n} );\n\nconst _eyeRight = new Matrix4();\nconst _eyeLeft = new Matrix4();\n\nfunction StereoCamera() {\n\n\tthis.type = 'StereoCamera';\n\n\tthis.aspect = 1;\n\n\tthis.eyeSep = 0.064;\n\n\tthis.cameraL = new PerspectiveCamera();\n\tthis.cameraL.layers.enable( 1 );\n\tthis.cameraL.matrixAutoUpdate = false;\n\n\tthis.cameraR = new PerspectiveCamera();\n\tthis.cameraR.layers.enable( 2 );\n\tthis.cameraR.matrixAutoUpdate = false;\n\n\tthis._cache = {\n\t\tfocus: null,\n\t\tfov: null,\n\t\taspect: null,\n\t\tnear: null,\n\t\tfar: null,\n\t\tzoom: null,\n\t\teyeSep: null\n\t};\n\n}\n\nObject.assign( StereoCamera.prototype, {\n\n\tupdate: function ( camera ) {\n\n\t\tconst cache = this._cache;\n\n\t\tconst needsUpdate = cache.focus !== camera.focus || cache.fov !== camera.fov ||\n\t\t\tcache.aspect !== camera.aspect * this.aspect || cache.near !== camera.near ||\n\t\t\tcache.far !== camera.far || cache.zoom !== camera.zoom || cache.eyeSep !== this.eyeSep;\n\n\t\tif ( needsUpdate ) {\n\n\t\t\tcache.focus = camera.focus;\n\t\t\tcache.fov = camera.fov;\n\t\t\tcache.aspect = camera.aspect * this.aspect;\n\t\t\tcache.near = camera.near;\n\t\t\tcache.far = camera.far;\n\t\t\tcache.zoom = camera.zoom;\n\t\t\tcache.eyeSep = this.eyeSep;\n\n\t\t\t// Off-axis stereoscopic effect based on\n\t\t\t// http://paulbourke.net/stereographics/stereorender/\n\n\t\t\tconst projectionMatrix = camera.projectionMatrix.clone();\n\t\t\tconst eyeSepHalf = cache.eyeSep / 2;\n\t\t\tconst eyeSepOnProjection = eyeSepHalf * cache.near / cache.focus;\n\t\t\tconst ymax = ( cache.near * Math.tan( MathUtils.DEG2RAD * cache.fov * 0.5 ) ) / cache.zoom;\n\t\t\tlet xmin, xmax;\n\n\t\t\t// translate xOffset\n\n\t\t\t_eyeLeft.elements[ 12 ] = - eyeSepHalf;\n\t\t\t_eyeRight.elements[ 12 ] = eyeSepHalf;\n\n\t\t\t// for left eye\n\n\t\t\txmin = - ymax * cache.aspect + eyeSepOnProjection;\n\t\t\txmax = ymax * cache.aspect + eyeSepOnProjection;\n\n\t\t\tprojectionMatrix.elements[ 0 ] = 2 * cache.near / ( xmax - xmin );\n\t\t\tprojectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );\n\n\t\t\tthis.cameraL.projectionMatrix.copy( projectionMatrix );\n\n\t\t\t// for right eye\n\n\t\t\txmin = - ymax * cache.aspect - eyeSepOnProjection;\n\t\t\txmax = ymax * cache.aspect - eyeSepOnProjection;\n\n\t\t\tprojectionMatrix.elements[ 0 ] = 2 * cache.near / ( xmax - xmin );\n\t\t\tprojectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );\n\n\t\t\tthis.cameraR.projectionMatrix.copy( projectionMatrix );\n\n\t\t}\n\n\t\tthis.cameraL.matrixWorld.copy( camera.matrixWorld ).multiply( _eyeLeft );\n\t\tthis.cameraR.matrixWorld.copy( camera.matrixWorld ).multiply( _eyeRight );\n\n\t}\n\n} );\n\nclass Clock {\n\n\tconstructor( autoStart ) {\n\n\t\tthis.autoStart = ( autoStart !== undefined ) ? autoStart : true;\n\n\t\tthis.startTime = 0;\n\t\tthis.oldTime = 0;\n\t\tthis.elapsedTime = 0;\n\n\t\tthis.running = false;\n\n\t}\n\n\tstart() {\n\n\t\tthis.startTime = now();\n\n\t\tthis.oldTime = this.startTime;\n\t\tthis.elapsedTime = 0;\n\t\tthis.running = true;\n\n\t}\n\n\tstop() {\n\n\t\tthis.getElapsedTime();\n\t\tthis.running = false;\n\t\tthis.autoStart = false;\n\n\t}\n\n\tgetElapsedTime() {\n\n\t\tthis.getDelta();\n\t\treturn this.elapsedTime;\n\n\t}\n\n\tgetDelta() {\n\n\t\tlet diff = 0;\n\n\t\tif ( this.autoStart && ! this.running ) {\n\n\t\t\tthis.start();\n\t\t\treturn 0;\n\n\t\t}\n\n\t\tif ( this.running ) {\n\n\t\t\tconst newTime = now();\n\n\t\t\tdiff = ( newTime - this.oldTime ) / 1000;\n\t\t\tthis.oldTime = newTime;\n\n\t\t\tthis.elapsedTime += diff;\n\n\t\t}\n\n\t\treturn diff;\n\n\t}\n\n}\n\nfunction now() {\n\n\treturn ( typeof performance === 'undefined' ? Date : performance ).now(); // see #10732\n\n}\n\nconst _position$2 = /*@__PURE__*/ new Vector3();\nconst _quaternion$3 = /*@__PURE__*/ new Quaternion();\nconst _scale$1 = /*@__PURE__*/ new Vector3();\nconst _orientation = /*@__PURE__*/ new Vector3();\n\nclass AudioListener extends Object3D {\n\n\tconstructor() {\n\n\t\tsuper();\n\n\t\tthis.type = 'AudioListener';\n\n\t\tthis.context = AudioContext.getContext();\n\n\t\tthis.gain = this.context.createGain();\n\t\tthis.gain.connect( this.context.destination );\n\n\t\tthis.filter = null;\n\n\t\tthis.timeDelta = 0;\n\n\t\t// private\n\n\t\tthis._clock = new Clock();\n\n\t}\n\n\tgetInput() {\n\n\t\treturn this.gain;\n\n\t}\n\n\tremoveFilter() {\n\n\t\tif ( this.filter !== null ) {\n\n\t\t\tthis.gain.disconnect( this.filter );\n\t\t\tthis.filter.disconnect( this.context.destination );\n\t\t\tthis.gain.connect( this.context.destination );\n\t\t\tthis.filter = null;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tgetFilter() {\n\n\t\treturn this.filter;\n\n\t}\n\n\tsetFilter( value ) {\n\n\t\tif ( this.filter !== null ) {\n\n\t\t\tthis.gain.disconnect( this.filter );\n\t\t\tthis.filter.disconnect( this.context.destination );\n\n\t\t} else {\n\n\t\t\tthis.gain.disconnect( this.context.destination );\n\n\t\t}\n\n\t\tthis.filter = value;\n\t\tthis.gain.connect( this.filter );\n\t\tthis.filter.connect( this.context.destination );\n\n\t\treturn this;\n\n\t}\n\n\tgetMasterVolume() {\n\n\t\treturn this.gain.gain.value;\n\n\t}\n\n\tsetMasterVolume( value ) {\n\n\t\tthis.gain.gain.setTargetAtTime( value, this.context.currentTime, 0.01 );\n\n\t\treturn this;\n\n\t}\n\n\tupdateMatrixWorld( force ) {\n\n\t\tsuper.updateMatrixWorld( force );\n\n\t\tconst listener = this.context.listener;\n\t\tconst up = this.up;\n\n\t\tthis.timeDelta = this._clock.getDelta();\n\n\t\tthis.matrixWorld.decompose( _position$2, _quaternion$3, _scale$1 );\n\n\t\t_orientation.set( 0, 0, - 1 ).applyQuaternion( _quaternion$3 );\n\n\t\tif ( listener.positionX ) {\n\n\t\t\t// code path for Chrome (see #14393)\n\n\t\t\tconst endTime = this.context.currentTime + this.timeDelta;\n\n\t\t\tlistener.positionX.linearRampToValueAtTime( _position$2.x, endTime );\n\t\t\tlistener.positionY.linearRampToValueAtTime( _position$2.y, endTime );\n\t\t\tlistener.positionZ.linearRampToValueAtTime( _position$2.z, endTime );\n\t\t\tlistener.forwardX.linearRampToValueAtTime( _orientation.x, endTime );\n\t\t\tlistener.forwardY.linearRampToValueAtTime( _orientation.y, endTime );\n\t\t\tlistener.forwardZ.linearRampToValueAtTime( _orientation.z, endTime );\n\t\t\tlistener.upX.linearRampToValueAtTime( up.x, endTime );\n\t\t\tlistener.upY.linearRampToValueAtTime( up.y, endTime );\n\t\t\tlistener.upZ.linearRampToValueAtTime( up.z, endTime );\n\n\t\t} else {\n\n\t\t\tlistener.setPosition( _position$2.x, _position$2.y, _position$2.z );\n\t\t\tlistener.setOrientation( _orientation.x, _orientation.y, _orientation.z, up.x, up.y, up.z );\n\n\t\t}\n\n\t}\n\n}\n\nclass Audio extends Object3D {\n\n\tconstructor( listener ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'Audio';\n\n\t\tthis.listener = listener;\n\t\tthis.context = listener.context;\n\n\t\tthis.gain = this.context.createGain();\n\t\tthis.gain.connect( listener.getInput() );\n\n\t\tthis.autoplay = false;\n\n\t\tthis.buffer = null;\n\t\tthis.detune = 0;\n\t\tthis.loop = false;\n\t\tthis.loopStart = 0;\n\t\tthis.loopEnd = 0;\n\t\tthis.offset = 0;\n\t\tthis.duration = undefined;\n\t\tthis.playbackRate = 1;\n\t\tthis.isPlaying = false;\n\t\tthis.hasPlaybackControl = true;\n\t\tthis.source = null;\n\t\tthis.sourceType = 'empty';\n\n\t\tthis._startedAt = 0;\n\t\tthis._progress = 0;\n\t\tthis._connected = false;\n\n\t\tthis.filters = [];\n\n\t}\n\n\tgetOutput() {\n\n\t\treturn this.gain;\n\n\t}\n\n\tsetNodeSource( audioNode ) {\n\n\t\tthis.hasPlaybackControl = false;\n\t\tthis.sourceType = 'audioNode';\n\t\tthis.source = audioNode;\n\t\tthis.connect();\n\n\t\treturn this;\n\n\t}\n\n\tsetMediaElementSource( mediaElement ) {\n\n\t\tthis.hasPlaybackControl = false;\n\t\tthis.sourceType = 'mediaNode';\n\t\tthis.source = this.context.createMediaElementSource( mediaElement );\n\t\tthis.connect();\n\n\t\treturn this;\n\n\t}\n\n\tsetMediaStreamSource( mediaStream ) {\n\n\t\tthis.hasPlaybackControl = false;\n\t\tthis.sourceType = 'mediaStreamNode';\n\t\tthis.source = this.context.createMediaStreamSource( mediaStream );\n\t\tthis.connect();\n\n\t\treturn this;\n\n\t}\n\n\tsetBuffer( audioBuffer ) {\n\n\t\tthis.buffer = audioBuffer;\n\t\tthis.sourceType = 'buffer';\n\n\t\tif ( this.autoplay ) this.play();\n\n\t\treturn this;\n\n\t}\n\n\tplay( delay = 0 ) {\n\n\t\tif ( this.isPlaying === true ) {\n\n\t\t\tconsole.warn( 'THREE.Audio: Audio is already playing.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( this.hasPlaybackControl === false ) {\n\n\t\t\tconsole.warn( 'THREE.Audio: this Audio has no playback control.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tthis._startedAt = this.context.currentTime + delay;\n\n\t\tconst source = this.context.createBufferSource();\n\t\tsource.buffer = this.buffer;\n\t\tsource.loop = this.loop;\n\t\tsource.loopStart = this.loopStart;\n\t\tsource.loopEnd = this.loopEnd;\n\t\tsource.onended = this.onEnded.bind( this );\n\t\tsource.start( this._startedAt, this._progress + this.offset, this.duration );\n\n\t\tthis.isPlaying = true;\n\n\t\tthis.source = source;\n\n\t\tthis.setDetune( this.detune );\n\t\tthis.setPlaybackRate( this.playbackRate );\n\n\t\treturn this.connect();\n\n\t}\n\n\tpause() {\n\n\t\tif ( this.hasPlaybackControl === false ) {\n\n\t\t\tconsole.warn( 'THREE.Audio: this Audio has no playback control.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( this.isPlaying === true ) {\n\n\t\t\t// update current progress\n\n\t\t\tthis._progress += Math.max( this.context.currentTime - this._startedAt, 0 ) * this.playbackRate;\n\n\t\t\tif ( this.loop === true ) {\n\n\t\t\t\t// ensure _progress does not exceed duration with looped audios\n\n\t\t\t\tthis._progress = this._progress % ( this.duration || this.buffer.duration );\n\n\t\t\t}\n\n\t\t\tthis.source.stop();\n\t\t\tthis.source.onended = null;\n\n\t\t\tthis.isPlaying = false;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tstop() {\n\n\t\tif ( this.hasPlaybackControl === false ) {\n\n\t\t\tconsole.warn( 'THREE.Audio: this Audio has no playback control.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tthis._progress = 0;\n\n\t\tthis.source.stop();\n\t\tthis.source.onended = null;\n\t\tthis.isPlaying = false;\n\n\t\treturn this;\n\n\t}\n\n\tconnect() {\n\n\t\tif ( this.filters.length > 0 ) {\n\n\t\t\tthis.source.connect( this.filters[ 0 ] );\n\n\t\t\tfor ( let i = 1, l = this.filters.length; i < l; i ++ ) {\n\n\t\t\t\tthis.filters[ i - 1 ].connect( this.filters[ i ] );\n\n\t\t\t}\n\n\t\t\tthis.filters[ this.filters.length - 1 ].connect( this.getOutput() );\n\n\t\t} else {\n\n\t\t\tthis.source.connect( this.getOutput() );\n\n\t\t}\n\n\t\tthis._connected = true;\n\n\t\treturn this;\n\n\t}\n\n\tdisconnect() {\n\n\t\tif ( this.filters.length > 0 ) {\n\n\t\t\tthis.source.disconnect( this.filters[ 0 ] );\n\n\t\t\tfor ( let i = 1, l = this.filters.length; i < l; i ++ ) {\n\n\t\t\t\tthis.filters[ i - 1 ].disconnect( this.filters[ i ] );\n\n\t\t\t}\n\n\t\t\tthis.filters[ this.filters.length - 1 ].disconnect( this.getOutput() );\n\n\t\t} else {\n\n\t\t\tthis.source.disconnect( this.getOutput() );\n\n\t\t}\n\n\t\tthis._connected = false;\n\n\t\treturn this;\n\n\t}\n\n\tgetFilters() {\n\n\t\treturn this.filters;\n\n\t}\n\n\tsetFilters( value ) {\n\n\t\tif ( ! value ) value = [];\n\n\t\tif ( this._connected === true ) {\n\n\t\t\tthis.disconnect();\n\t\t\tthis.filters = value.slice();\n\t\t\tthis.connect();\n\n\t\t} else {\n\n\t\t\tthis.filters = value.slice();\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetDetune( value ) {\n\n\t\tthis.detune = value;\n\n\t\tif ( this.source.detune === undefined ) return; // only set detune when available\n\n\t\tif ( this.isPlaying === true ) {\n\n\t\t\tthis.source.detune.setTargetAtTime( this.detune, this.context.currentTime, 0.01 );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tgetDetune() {\n\n\t\treturn this.detune;\n\n\t}\n\n\tgetFilter() {\n\n\t\treturn this.getFilters()[ 0 ];\n\n\t}\n\n\tsetFilter( filter ) {\n\n\t\treturn this.setFilters( filter ? [ filter ] : [] );\n\n\t}\n\n\tsetPlaybackRate( value ) {\n\n\t\tif ( this.hasPlaybackControl === false ) {\n\n\t\t\tconsole.warn( 'THREE.Audio: this Audio has no playback control.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tthis.playbackRate = value;\n\n\t\tif ( this.isPlaying === true ) {\n\n\t\t\tthis.source.playbackRate.setTargetAtTime( this.playbackRate, this.context.currentTime, 0.01 );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tgetPlaybackRate() {\n\n\t\treturn this.playbackRate;\n\n\t}\n\n\tonEnded() {\n\n\t\tthis.isPlaying = false;\n\n\t}\n\n\tgetLoop() {\n\n\t\tif ( this.hasPlaybackControl === false ) {\n\n\t\t\tconsole.warn( 'THREE.Audio: this Audio has no playback control.' );\n\t\t\treturn false;\n\n\t\t}\n\n\t\treturn this.loop;\n\n\t}\n\n\tsetLoop( value ) {\n\n\t\tif ( this.hasPlaybackControl === false ) {\n\n\t\t\tconsole.warn( 'THREE.Audio: this Audio has no playback control.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tthis.loop = value;\n\n\t\tif ( this.isPlaying === true ) {\n\n\t\t\tthis.source.loop = this.loop;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetLoopStart( value ) {\n\n\t\tthis.loopStart = value;\n\n\t\treturn this;\n\n\t}\n\n\tsetLoopEnd( value ) {\n\n\t\tthis.loopEnd = value;\n\n\t\treturn this;\n\n\t}\n\n\tgetVolume() {\n\n\t\treturn this.gain.gain.value;\n\n\t}\n\n\tsetVolume( value ) {\n\n\t\tthis.gain.gain.setTargetAtTime( value, this.context.currentTime, 0.01 );\n\n\t\treturn this;\n\n\t}\n\n}\n\nconst _position$3 = /*@__PURE__*/ new Vector3();\nconst _quaternion$4 = /*@__PURE__*/ new Quaternion();\nconst _scale$2 = /*@__PURE__*/ new Vector3();\nconst _orientation$1 = /*@__PURE__*/ new Vector3();\n\nclass PositionalAudio extends Audio {\n\n\tconstructor( listener ) {\n\n\t\tsuper( listener );\n\n\t\tthis.panner = this.context.createPanner();\n\t\tthis.panner.panningModel = 'HRTF';\n\t\tthis.panner.connect( this.gain );\n\n\t}\n\n\tgetOutput() {\n\n\t\treturn this.panner;\n\n\t}\n\n\tgetRefDistance() {\n\n\t\treturn this.panner.refDistance;\n\n\t}\n\n\tsetRefDistance( value ) {\n\n\t\tthis.panner.refDistance = value;\n\n\t\treturn this;\n\n\t}\n\n\tgetRolloffFactor() {\n\n\t\treturn this.panner.rolloffFactor;\n\n\t}\n\n\tsetRolloffFactor( value ) {\n\n\t\tthis.panner.rolloffFactor = value;\n\n\t\treturn this;\n\n\t}\n\n\tgetDistanceModel() {\n\n\t\treturn this.panner.distanceModel;\n\n\t}\n\n\tsetDistanceModel( value ) {\n\n\t\tthis.panner.distanceModel = value;\n\n\t\treturn this;\n\n\t}\n\n\tgetMaxDistance() {\n\n\t\treturn this.panner.maxDistance;\n\n\t}\n\n\tsetMaxDistance( value ) {\n\n\t\tthis.panner.maxDistance = value;\n\n\t\treturn this;\n\n\t}\n\n\tsetDirectionalCone( coneInnerAngle, coneOuterAngle, coneOuterGain ) {\n\n\t\tthis.panner.coneInnerAngle = coneInnerAngle;\n\t\tthis.panner.coneOuterAngle = coneOuterAngle;\n\t\tthis.panner.coneOuterGain = coneOuterGain;\n\n\t\treturn this;\n\n\t}\n\n\tupdateMatrixWorld( force ) {\n\n\t\tsuper.updateMatrixWorld( force );\n\n\t\tif ( this.hasPlaybackControl === true && this.isPlaying === false ) return;\n\n\t\tthis.matrixWorld.decompose( _position$3, _quaternion$4, _scale$2 );\n\n\t\t_orientation$1.set( 0, 0, 1 ).applyQuaternion( _quaternion$4 );\n\n\t\tconst panner = this.panner;\n\n\t\tif ( panner.positionX ) {\n\n\t\t\t// code path for Chrome and Firefox (see #14393)\n\n\t\t\tconst endTime = this.context.currentTime + this.listener.timeDelta;\n\n\t\t\tpanner.positionX.linearRampToValueAtTime( _position$3.x, endTime );\n\t\t\tpanner.positionY.linearRampToValueAtTime( _position$3.y, endTime );\n\t\t\tpanner.positionZ.linearRampToValueAtTime( _position$3.z, endTime );\n\t\t\tpanner.orientationX.linearRampToValueAtTime( _orientation$1.x, endTime );\n\t\t\tpanner.orientationY.linearRampToValueAtTime( _orientation$1.y, endTime );\n\t\t\tpanner.orientationZ.linearRampToValueAtTime( _orientation$1.z, endTime );\n\n\t\t} else {\n\n\t\t\tpanner.setPosition( _position$3.x, _position$3.y, _position$3.z );\n\t\t\tpanner.setOrientation( _orientation$1.x, _orientation$1.y, _orientation$1.z );\n\n\t\t}\n\n\t}\n\n}\n\nclass AudioAnalyser {\n\n\tconstructor( audio, fftSize = 2048 ) {\n\n\t\tthis.analyser = audio.context.createAnalyser();\n\t\tthis.analyser.fftSize = fftSize;\n\n\t\tthis.data = new Uint8Array( this.analyser.frequencyBinCount );\n\n\t\taudio.getOutput().connect( this.analyser );\n\n\t}\n\n\n\tgetFrequencyData() {\n\n\t\tthis.analyser.getByteFrequencyData( this.data );\n\n\t\treturn this.data;\n\n\t}\n\n\tgetAverageFrequency() {\n\n\t\tlet value = 0;\n\t\tconst data = this.getFrequencyData();\n\n\t\tfor ( let i = 0; i < data.length; i ++ ) {\n\n\t\t\tvalue += data[ i ];\n\n\t\t}\n\n\t\treturn value / data.length;\n\n\t}\n\n}\n\nfunction PropertyMixer( binding, typeName, valueSize ) {\n\n\tthis.binding = binding;\n\tthis.valueSize = valueSize;\n\n\tlet mixFunction,\n\t\tmixFunctionAdditive,\n\t\tsetIdentity;\n\n\t// buffer layout: [ incoming | accu0 | accu1 | orig | addAccu | (optional work) ]\n\t//\n\t// interpolators can use .buffer as their .result\n\t// the data then goes to 'incoming'\n\t//\n\t// 'accu0' and 'accu1' are used frame-interleaved for\n\t// the cumulative result and are compared to detect\n\t// changes\n\t//\n\t// 'orig' stores the original state of the property\n\t//\n\t// 'add' is used for additive cumulative results\n\t//\n\t// 'work' is optional and is only present for quaternion types. It is used\n\t// to store intermediate quaternion multiplication results\n\n\tswitch ( typeName ) {\n\n\t\tcase 'quaternion':\n\t\t\tmixFunction = this._slerp;\n\t\t\tmixFunctionAdditive = this._slerpAdditive;\n\t\t\tsetIdentity = this._setAdditiveIdentityQuaternion;\n\n\t\t\tthis.buffer = new Float64Array( valueSize * 6 );\n\t\t\tthis._workIndex = 5;\n\t\t\tbreak;\n\n\t\tcase 'string':\n\t\tcase 'bool':\n\t\t\tmixFunction = this._select;\n\n\t\t\t// Use the regular mix function and for additive on these types,\n\t\t\t// additive is not relevant for non-numeric types\n\t\t\tmixFunctionAdditive = this._select;\n\n\t\t\tsetIdentity = this._setAdditiveIdentityOther;\n\n\t\t\tthis.buffer = new Array( valueSize * 5 );\n\t\t\tbreak;\n\n\t\tdefault:\n\t\t\tmixFunction = this._lerp;\n\t\t\tmixFunctionAdditive = this._lerpAdditive;\n\t\t\tsetIdentity = this._setAdditiveIdentityNumeric;\n\n\t\t\tthis.buffer = new Float64Array( valueSize * 5 );\n\n\t}\n\n\tthis._mixBufferRegion = mixFunction;\n\tthis._mixBufferRegionAdditive = mixFunctionAdditive;\n\tthis._setIdentity = setIdentity;\n\tthis._origIndex = 3;\n\tthis._addIndex = 4;\n\n\tthis.cumulativeWeight = 0;\n\tthis.cumulativeWeightAdditive = 0;\n\n\tthis.useCount = 0;\n\tthis.referenceCount = 0;\n\n}\n\nObject.assign( PropertyMixer.prototype, {\n\n\t// accumulate data in the 'incoming' region into 'accu<i>'\n\taccumulate: function ( accuIndex, weight ) {\n\n\t\t// note: happily accumulating nothing when weight = 0, the caller knows\n\t\t// the weight and shouldn't have made the call in the first place\n\n\t\tconst buffer = this.buffer,\n\t\t\tstride = this.valueSize,\n\t\t\toffset = accuIndex * stride + stride;\n\n\t\tlet currentWeight = this.cumulativeWeight;\n\n\t\tif ( currentWeight === 0 ) {\n\n\t\t\t// accuN := incoming * weight\n\n\t\t\tfor ( let i = 0; i !== stride; ++ i ) {\n\n\t\t\t\tbuffer[ offset + i ] = buffer[ i ];\n\n\t\t\t}\n\n\t\t\tcurrentWeight = weight;\n\n\t\t} else {\n\n\t\t\t// accuN := accuN + incoming * weight\n\n\t\t\tcurrentWeight += weight;\n\t\t\tconst mix = weight / currentWeight;\n\t\t\tthis._mixBufferRegion( buffer, offset, 0, mix, stride );\n\n\t\t}\n\n\t\tthis.cumulativeWeight = currentWeight;\n\n\t},\n\n\t// accumulate data in the 'incoming' region into 'add'\n\taccumulateAdditive: function ( weight ) {\n\n\t\tconst buffer = this.buffer,\n\t\t\tstride = this.valueSize,\n\t\t\toffset = stride * this._addIndex;\n\n\t\tif ( this.cumulativeWeightAdditive === 0 ) {\n\n\t\t\t// add = identity\n\n\t\t\tthis._setIdentity();\n\n\t\t}\n\n\t\t// add := add + incoming * weight\n\n\t\tthis._mixBufferRegionAdditive( buffer, offset, 0, weight, stride );\n\t\tthis.cumulativeWeightAdditive += weight;\n\n\t},\n\n\t// apply the state of 'accu<i>' to the binding when accus differ\n\tapply: function ( accuIndex ) {\n\n\t\tconst stride = this.valueSize,\n\t\t\tbuffer = this.buffer,\n\t\t\toffset = accuIndex * stride + stride,\n\n\t\t\tweight = this.cumulativeWeight,\n\t\t\tweightAdditive = this.cumulativeWeightAdditive,\n\n\t\t\tbinding = this.binding;\n\n\t\tthis.cumulativeWeight = 0;\n\t\tthis.cumulativeWeightAdditive = 0;\n\n\t\tif ( weight < 1 ) {\n\n\t\t\t// accuN := accuN + original * ( 1 - cumulativeWeight )\n\n\t\t\tconst originalValueOffset = stride * this._origIndex;\n\n\t\t\tthis._mixBufferRegion(\n\t\t\t\tbuffer, offset, originalValueOffset, 1 - weight, stride );\n\n\t\t}\n\n\t\tif ( weightAdditive > 0 ) {\n\n\t\t\t// accuN := accuN + additive accuN\n\n\t\t\tthis._mixBufferRegionAdditive( buffer, offset, this._addIndex * stride, 1, stride );\n\n\t\t}\n\n\t\tfor ( let i = stride, e = stride + stride; i !== e; ++ i ) {\n\n\t\t\tif ( buffer[ i ] !== buffer[ i + stride ] ) {\n\n\t\t\t\t// value has changed -> update scene graph\n\n\t\t\t\tbinding.setValue( buffer, offset );\n\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\t// remember the state of the bound property and copy it to both accus\n\tsaveOriginalState: function () {\n\n\t\tconst binding = this.binding;\n\n\t\tconst buffer = this.buffer,\n\t\t\tstride = this.valueSize,\n\n\t\t\toriginalValueOffset = stride * this._origIndex;\n\n\t\tbinding.getValue( buffer, originalValueOffset );\n\n\t\t// accu[0..1] := orig -- initially detect changes against the original\n\t\tfor ( let i = stride, e = originalValueOffset; i !== e; ++ i ) {\n\n\t\t\tbuffer[ i ] = buffer[ originalValueOffset + ( i % stride ) ];\n\n\t\t}\n\n\t\t// Add to identity for additive\n\t\tthis._setIdentity();\n\n\t\tthis.cumulativeWeight = 0;\n\t\tthis.cumulativeWeightAdditive = 0;\n\n\t},\n\n\t// apply the state previously taken via 'saveOriginalState' to the binding\n\trestoreOriginalState: function () {\n\n\t\tconst originalValueOffset = this.valueSize * 3;\n\t\tthis.binding.setValue( this.buffer, originalValueOffset );\n\n\t},\n\n\t_setAdditiveIdentityNumeric: function () {\n\n\t\tconst startIndex = this._addIndex * this.valueSize;\n\t\tconst endIndex = startIndex + this.valueSize;\n\n\t\tfor ( let i = startIndex; i < endIndex; i ++ ) {\n\n\t\t\tthis.buffer[ i ] = 0;\n\n\t\t}\n\n\t},\n\n\t_setAdditiveIdentityQuaternion: function () {\n\n\t\tthis._setAdditiveIdentityNumeric();\n\t\tthis.buffer[ this._addIndex * this.valueSize + 3 ] = 1;\n\n\t},\n\n\t_setAdditiveIdentityOther: function () {\n\n\t\tconst startIndex = this._origIndex * this.valueSize;\n\t\tconst targetIndex = this._addIndex * this.valueSize;\n\n\t\tfor ( let i = 0; i < this.valueSize; i ++ ) {\n\n\t\t\tthis.buffer[ targetIndex + i ] = this.buffer[ startIndex + i ];\n\n\t\t}\n\n\t},\n\n\n\t// mix functions\n\n\t_select: function ( buffer, dstOffset, srcOffset, t, stride ) {\n\n\t\tif ( t >= 0.5 ) {\n\n\t\t\tfor ( let i = 0; i !== stride; ++ i ) {\n\n\t\t\t\tbuffer[ dstOffset + i ] = buffer[ srcOffset + i ];\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\t_slerp: function ( buffer, dstOffset, srcOffset, t ) {\n\n\t\tQuaternion.slerpFlat( buffer, dstOffset, buffer, dstOffset, buffer, srcOffset, t );\n\n\t},\n\n\t_slerpAdditive: function ( buffer, dstOffset, srcOffset, t, stride ) {\n\n\t\tconst workOffset = this._workIndex * stride;\n\n\t\t// Store result in intermediate buffer offset\n\t\tQuaternion.multiplyQuaternionsFlat( buffer, workOffset, buffer, dstOffset, buffer, srcOffset );\n\n\t\t// Slerp to the intermediate result\n\t\tQuaternion.slerpFlat( buffer, dstOffset, buffer, dstOffset, buffer, workOffset, t );\n\n\t},\n\n\t_lerp: function ( buffer, dstOffset, srcOffset, t, stride ) {\n\n\t\tconst s = 1 - t;\n\n\t\tfor ( let i = 0; i !== stride; ++ i ) {\n\n\t\t\tconst j = dstOffset + i;\n\n\t\t\tbuffer[ j ] = buffer[ j ] * s + buffer[ srcOffset + i ] * t;\n\n\t\t}\n\n\t},\n\n\t_lerpAdditive: function ( buffer, dstOffset, srcOffset, t, stride ) {\n\n\t\tfor ( let i = 0; i !== stride; ++ i ) {\n\n\t\t\tconst j = dstOffset + i;\n\n\t\t\tbuffer[ j ] = buffer[ j ] + buffer[ srcOffset + i ] * t;\n\n\t\t}\n\n\t}\n\n} );\n\n// Characters [].:/ are reserved for track binding syntax.\nconst _RESERVED_CHARS_RE = '\\\\[\\\\]\\\\.:\\\\/';\nconst _reservedRe = new RegExp( '[' + _RESERVED_CHARS_RE + ']', 'g' );\n\n// Attempts to allow node names from any language. ES5's `\\w` regexp matches\n// only latin characters, and the unicode \\p{L} is not yet supported. So\n// instead, we exclude reserved characters and match everything else.\nconst _wordChar = '[^' + _RESERVED_CHARS_RE + ']';\nconst _wordCharOrDot = '[^' + _RESERVED_CHARS_RE.replace( '\\\\.', '' ) + ']';\n\n// Parent directories, delimited by '/' or ':'. Currently unused, but must\n// be matched to parse the rest of the track name.\nconst _directoryRe = /((?:WC+[\\/:])*)/.source.replace( 'WC', _wordChar );\n\n// Target node. May contain word characters (a-zA-Z0-9_) and '.' or '-'.\nconst _nodeRe = /(WCOD+)?/.source.replace( 'WCOD', _wordCharOrDot );\n\n// Object on target node, and accessor. May not contain reserved\n// characters. Accessor may contain any character except closing bracket.\nconst _objectRe = /(?:\\.(WC+)(?:\\[(.+)\\])?)?/.source.replace( 'WC', _wordChar );\n\n// Property and accessor. May not contain reserved characters. Accessor may\n// contain any non-bracket characters.\nconst _propertyRe = /\\.(WC+)(?:\\[(.+)\\])?/.source.replace( 'WC', _wordChar );\n\nconst _trackRe = new RegExp( ''\n\t+ '^'\n\t+ _directoryRe\n\t+ _nodeRe\n\t+ _objectRe\n\t+ _propertyRe\n\t+ '$'\n);\n\nconst _supportedObjectNames = [ 'material', 'materials', 'bones' ];\n\nfunction Composite( targetGroup, path, optionalParsedPath ) {\n\n\tconst parsedPath = optionalParsedPath || PropertyBinding.parseTrackName( path );\n\n\tthis._targetGroup = targetGroup;\n\tthis._bindings = targetGroup.subscribe_( path, parsedPath );\n\n}\n\nObject.assign( Composite.prototype, {\n\n\tgetValue: function ( array, offset ) {\n\n\t\tthis.bind(); // bind all binding\n\n\t\tconst firstValidIndex = this._targetGroup.nCachedObjects_,\n\t\t\tbinding = this._bindings[ firstValidIndex ];\n\n\t\t// and only call .getValue on the first\n\t\tif ( binding !== undefined ) binding.getValue( array, offset );\n\n\t},\n\n\tsetValue: function ( array, offset ) {\n\n\t\tconst bindings = this._bindings;\n\n\t\tfor ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {\n\n\t\t\tbindings[ i ].setValue( array, offset );\n\n\t\t}\n\n\t},\n\n\tbind: function () {\n\n\t\tconst bindings = this._bindings;\n\n\t\tfor ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {\n\n\t\t\tbindings[ i ].bind();\n\n\t\t}\n\n\t},\n\n\tunbind: function () {\n\n\t\tconst bindings = this._bindings;\n\n\t\tfor ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {\n\n\t\t\tbindings[ i ].unbind();\n\n\t\t}\n\n\t}\n\n} );\n\n\nfunction PropertyBinding( rootNode, path, parsedPath ) {\n\n\tthis.path = path;\n\tthis.parsedPath = parsedPath || PropertyBinding.parseTrackName( path );\n\n\tthis.node = PropertyBinding.findNode( rootNode, this.parsedPath.nodeName ) || rootNode;\n\n\tthis.rootNode = rootNode;\n\n}\n\nObject.assign( PropertyBinding, {\n\n\tComposite: Composite,\n\n\tcreate: function ( root, path, parsedPath ) {\n\n\t\tif ( ! ( root && root.isAnimationObjectGroup ) ) {\n\n\t\t\treturn new PropertyBinding( root, path, parsedPath );\n\n\t\t} else {\n\n\t\t\treturn new PropertyBinding.Composite( root, path, parsedPath );\n\n\t\t}\n\n\t},\n\n\t/**\n\t * Replaces spaces with underscores and removes unsupported characters from\n\t * node names, to ensure compatibility with parseTrackName().\n\t *\n\t * @param {string} name Node name to be sanitized.\n\t * @return {string}\n\t */\n\tsanitizeNodeName: function ( name ) {\n\n\t\treturn name.replace( /\\s/g, '_' ).replace( _reservedRe, '' );\n\n\t},\n\n\tparseTrackName: function ( trackName ) {\n\n\t\tconst matches = _trackRe.exec( trackName );\n\n\t\tif ( ! matches ) {\n\n\t\t\tthrow new Error( 'PropertyBinding: Cannot parse trackName: ' + trackName );\n\n\t\t}\n\n\t\tconst results = {\n\t\t\t// directoryName: matches[ 1 ], // (tschw) currently unused\n\t\t\tnodeName: matches[ 2 ],\n\t\t\tobjectName: matches[ 3 ],\n\t\t\tobjectIndex: matches[ 4 ],\n\t\t\tpropertyName: matches[ 5 ], // required\n\t\t\tpropertyIndex: matches[ 6 ]\n\t\t};\n\n\t\tconst lastDot = results.nodeName && results.nodeName.lastIndexOf( '.' );\n\n\t\tif ( lastDot !== undefined && lastDot !== - 1 ) {\n\n\t\t\tconst objectName = results.nodeName.substring( lastDot + 1 );\n\n\t\t\t// Object names must be checked against an allowlist. Otherwise, there\n\t\t\t// is no way to parse 'foo.bar.baz': 'baz' must be a property, but\n\t\t\t// 'bar' could be the objectName, or part of a nodeName (which can\n\t\t\t// include '.' characters).\n\t\t\tif ( _supportedObjectNames.indexOf( objectName ) !== - 1 ) {\n\n\t\t\t\tresults.nodeName = results.nodeName.substring( 0, lastDot );\n\t\t\t\tresults.objectName = objectName;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( results.propertyName === null || results.propertyName.length === 0 ) {\n\n\t\t\tthrow new Error( 'PropertyBinding: can not parse propertyName from trackName: ' + trackName );\n\n\t\t}\n\n\t\treturn results;\n\n\t},\n\n\tfindNode: function ( root, nodeName ) {\n\n\t\tif ( ! nodeName || nodeName === '' || nodeName === '.' || nodeName === - 1 || nodeName === root.name || nodeName === root.uuid ) {\n\n\t\t\treturn root;\n\n\t\t}\n\n\t\t// search into skeleton bones.\n\t\tif ( root.skeleton ) {\n\n\t\t\tconst bone = root.skeleton.getBoneByName( nodeName );\n\n\t\t\tif ( bone !== undefined ) {\n\n\t\t\t\treturn bone;\n\n\t\t\t}\n\n\t\t}\n\n\t\t// search into node subtree.\n\t\tif ( root.children ) {\n\n\t\t\tconst searchNodeSubtree = function ( children ) {\n\n\t\t\t\tfor ( let i = 0; i < children.length; i ++ ) {\n\n\t\t\t\t\tconst childNode = children[ i ];\n\n\t\t\t\t\tif ( childNode.name === nodeName || childNode.uuid === nodeName ) {\n\n\t\t\t\t\t\treturn childNode;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tconst result = searchNodeSubtree( childNode.children );\n\n\t\t\t\t\tif ( result ) return result;\n\n\t\t\t\t}\n\n\t\t\t\treturn null;\n\n\t\t\t};\n\n\t\t\tconst subTreeNode = searchNodeSubtree( root.children );\n\n\t\t\tif ( subTreeNode ) {\n\n\t\t\t\treturn subTreeNode;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn null;\n\n\t}\n\n} );\n\nObject.assign( PropertyBinding.prototype, { // prototype, continued\n\n\t// these are used to \"bind\" a nonexistent property\n\t_getValue_unavailable: function () {},\n\t_setValue_unavailable: function () {},\n\n\tBindingType: {\n\t\tDirect: 0,\n\t\tEntireArray: 1,\n\t\tArrayElement: 2,\n\t\tHasFromToArray: 3\n\t},\n\n\tVersioning: {\n\t\tNone: 0,\n\t\tNeedsUpdate: 1,\n\t\tMatrixWorldNeedsUpdate: 2\n\t},\n\n\tGetterByBindingType: [\n\n\t\tfunction getValue_direct( buffer, offset ) {\n\n\t\t\tbuffer[ offset ] = this.node[ this.propertyName ];\n\n\t\t},\n\n\t\tfunction getValue_array( buffer, offset ) {\n\n\t\t\tconst source = this.resolvedProperty;\n\n\t\t\tfor ( let i = 0, n = source.length; i !== n; ++ i ) {\n\n\t\t\t\tbuffer[ offset ++ ] = source[ i ];\n\n\t\t\t}\n\n\t\t},\n\n\t\tfunction getValue_arrayElement( buffer, offset ) {\n\n\t\t\tbuffer[ offset ] = this.resolvedProperty[ this.propertyIndex ];\n\n\t\t},\n\n\t\tfunction getValue_toArray( buffer, offset ) {\n\n\t\t\tthis.resolvedProperty.toArray( buffer, offset );\n\n\t\t}\n\n\t],\n\n\tSetterByBindingTypeAndVersioning: [\n\n\t\t[\n\t\t\t// Direct\n\n\t\t\tfunction setValue_direct( buffer, offset ) {\n\n\t\t\t\tthis.targetObject[ this.propertyName ] = buffer[ offset ];\n\n\t\t\t},\n\n\t\t\tfunction setValue_direct_setNeedsUpdate( buffer, offset ) {\n\n\t\t\t\tthis.targetObject[ this.propertyName ] = buffer[ offset ];\n\t\t\t\tthis.targetObject.needsUpdate = true;\n\n\t\t\t},\n\n\t\t\tfunction setValue_direct_setMatrixWorldNeedsUpdate( buffer, offset ) {\n\n\t\t\t\tthis.targetObject[ this.propertyName ] = buffer[ offset ];\n\t\t\t\tthis.targetObject.matrixWorldNeedsUpdate = true;\n\n\t\t\t}\n\n\t\t], [\n\n\t\t\t// EntireArray\n\n\t\t\tfunction setValue_array( buffer, offset ) {\n\n\t\t\t\tconst dest = this.resolvedProperty;\n\n\t\t\t\tfor ( let i = 0, n = dest.length; i !== n; ++ i ) {\n\n\t\t\t\t\tdest[ i ] = buffer[ offset ++ ];\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tfunction setValue_array_setNeedsUpdate( buffer, offset ) {\n\n\t\t\t\tconst dest = this.resolvedProperty;\n\n\t\t\t\tfor ( let i = 0, n = dest.length; i !== n; ++ i ) {\n\n\t\t\t\t\tdest[ i ] = buffer[ offset ++ ];\n\n\t\t\t\t}\n\n\t\t\t\tthis.targetObject.needsUpdate = true;\n\n\t\t\t},\n\n\t\t\tfunction setValue_array_setMatrixWorldNeedsUpdate( buffer, offset ) {\n\n\t\t\t\tconst dest = this.resolvedProperty;\n\n\t\t\t\tfor ( let i = 0, n = dest.length; i !== n; ++ i ) {\n\n\t\t\t\t\tdest[ i ] = buffer[ offset ++ ];\n\n\t\t\t\t}\n\n\t\t\t\tthis.targetObject.matrixWorldNeedsUpdate = true;\n\n\t\t\t}\n\n\t\t], [\n\n\t\t\t// ArrayElement\n\n\t\t\tfunction setValue_arrayElement( buffer, offset ) {\n\n\t\t\t\tthis.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];\n\n\t\t\t},\n\n\t\t\tfunction setValue_arrayElement_setNeedsUpdate( buffer, offset ) {\n\n\t\t\t\tthis.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];\n\t\t\t\tthis.targetObject.needsUpdate = true;\n\n\t\t\t},\n\n\t\t\tfunction setValue_arrayElement_setMatrixWorldNeedsUpdate( buffer, offset ) {\n\n\t\t\t\tthis.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];\n\t\t\t\tthis.targetObject.matrixWorldNeedsUpdate = true;\n\n\t\t\t}\n\n\t\t], [\n\n\t\t\t// HasToFromArray\n\n\t\t\tfunction setValue_fromArray( buffer, offset ) {\n\n\t\t\t\tthis.resolvedProperty.fromArray( buffer, offset );\n\n\t\t\t},\n\n\t\t\tfunction setValue_fromArray_setNeedsUpdate( buffer, offset ) {\n\n\t\t\t\tthis.resolvedProperty.fromArray( buffer, offset );\n\t\t\t\tthis.targetObject.needsUpdate = true;\n\n\t\t\t},\n\n\t\t\tfunction setValue_fromArray_setMatrixWorldNeedsUpdate( buffer, offset ) {\n\n\t\t\t\tthis.resolvedProperty.fromArray( buffer, offset );\n\t\t\t\tthis.targetObject.matrixWorldNeedsUpdate = true;\n\n\t\t\t}\n\n\t\t]\n\n\t],\n\n\tgetValue: function getValue_unbound( targetArray, offset ) {\n\n\t\tthis.bind();\n\t\tthis.getValue( targetArray, offset );\n\n\t\t// Note: This class uses a State pattern on a per-method basis:\n\t\t// 'bind' sets 'this.getValue' / 'setValue' and shadows the\n\t\t// prototype version of these methods with one that represents\n\t\t// the bound state. When the property is not found, the methods\n\t\t// become no-ops.\n\n\t},\n\n\tsetValue: function getValue_unbound( sourceArray, offset ) {\n\n\t\tthis.bind();\n\t\tthis.setValue( sourceArray, offset );\n\n\t},\n\n\t// create getter / setter pair for a property in the scene graph\n\tbind: function () {\n\n\t\tlet targetObject = this.node;\n\t\tconst parsedPath = this.parsedPath;\n\n\t\tconst objectName = parsedPath.objectName;\n\t\tconst propertyName = parsedPath.propertyName;\n\t\tlet propertyIndex = parsedPath.propertyIndex;\n\n\t\tif ( ! targetObject ) {\n\n\t\t\ttargetObject = PropertyBinding.findNode( this.rootNode, parsedPath.nodeName ) || this.rootNode;\n\n\t\t\tthis.node = targetObject;\n\n\t\t}\n\n\t\t// set fail state so we can just 'return' on error\n\t\tthis.getValue = this._getValue_unavailable;\n\t\tthis.setValue = this._setValue_unavailable;\n\n\t\t// ensure there is a value node\n\t\tif ( ! targetObject ) {\n\n\t\t\tconsole.error( 'THREE.PropertyBinding: Trying to update node for track: ' + this.path + ' but it wasn\\'t found.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( objectName ) {\n\n\t\t\tlet objectIndex = parsedPath.objectIndex;\n\n\t\t\t// special cases were we need to reach deeper into the hierarchy to get the face materials....\n\t\t\tswitch ( objectName ) {\n\n\t\t\t\tcase 'materials':\n\n\t\t\t\t\tif ( ! targetObject.material ) {\n\n\t\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Can not bind to material as node does not have a material.', this );\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( ! targetObject.material.materials ) {\n\n\t\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Can not bind to material.materials as node.material does not have a materials array.', this );\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t}\n\n\t\t\t\t\ttargetObject = targetObject.material.materials;\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'bones':\n\n\t\t\t\t\tif ( ! targetObject.skeleton ) {\n\n\t\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Can not bind to bones as node does not have a skeleton.', this );\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t}\n\n\t\t\t\t\t// potential future optimization: skip this if propertyIndex is already an integer\n\t\t\t\t\t// and convert the integer string to a true integer.\n\n\t\t\t\t\ttargetObject = targetObject.skeleton.bones;\n\n\t\t\t\t\t// support resolving morphTarget names into indices.\n\t\t\t\t\tfor ( let i = 0; i < targetObject.length; i ++ ) {\n\n\t\t\t\t\t\tif ( targetObject[ i ].name === objectIndex ) {\n\n\t\t\t\t\t\t\tobjectIndex = i;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tdefault:\n\n\t\t\t\t\tif ( targetObject[ objectName ] === undefined ) {\n\n\t\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Can not bind to objectName of node undefined.', this );\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t}\n\n\t\t\t\t\ttargetObject = targetObject[ objectName ];\n\n\t\t\t}\n\n\n\t\t\tif ( objectIndex !== undefined ) {\n\n\t\t\t\tif ( targetObject[ objectIndex ] === undefined ) {\n\n\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Trying to bind to objectIndex of objectName, but is undefined.', this, targetObject );\n\t\t\t\t\treturn;\n\n\t\t\t\t}\n\n\t\t\t\ttargetObject = targetObject[ objectIndex ];\n\n\t\t\t}\n\n\t\t}\n\n\t\t// resolve property\n\t\tconst nodeProperty = targetObject[ propertyName ];\n\n\t\tif ( nodeProperty === undefined ) {\n\n\t\t\tconst nodeName = parsedPath.nodeName;\n\n\t\t\tconsole.error( 'THREE.PropertyBinding: Trying to update property for track: ' + nodeName +\n\t\t\t\t'.' + propertyName + ' but it wasn\\'t found.', targetObject );\n\t\t\treturn;\n\n\t\t}\n\n\t\t// determine versioning scheme\n\t\tlet versioning = this.Versioning.None;\n\n\t\tthis.targetObject = targetObject;\n\n\t\tif ( targetObject.needsUpdate !== undefined ) { // material\n\n\t\t\tversioning = this.Versioning.NeedsUpdate;\n\n\t\t} else if ( targetObject.matrixWorldNeedsUpdate !== undefined ) { // node transform\n\n\t\t\tversioning = this.Versioning.MatrixWorldNeedsUpdate;\n\n\t\t}\n\n\t\t// determine how the property gets bound\n\t\tlet bindingType = this.BindingType.Direct;\n\n\t\tif ( propertyIndex !== undefined ) {\n\n\t\t\t// access a sub element of the property array (only primitives are supported right now)\n\n\t\t\tif ( propertyName === 'morphTargetInfluences' ) {\n\n\t\t\t\t// potential optimization, skip this if propertyIndex is already an integer, and convert the integer string to a true integer.\n\n\t\t\t\t// support resolving morphTarget names into indices.\n\t\t\t\tif ( ! targetObject.geometry ) {\n\n\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.', this );\n\t\t\t\t\treturn;\n\n\t\t\t\t}\n\n\t\t\t\tif ( targetObject.geometry.isBufferGeometry ) {\n\n\t\t\t\t\tif ( ! targetObject.geometry.morphAttributes ) {\n\n\t\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.morphAttributes.', this );\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( targetObject.morphTargetDictionary[ propertyIndex ] !== undefined ) {\n\n\t\t\t\t\t\tpropertyIndex = targetObject.morphTargetDictionary[ propertyIndex ];\n\n\t\t\t\t\t}\n\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences on THREE.Geometry. Use THREE.BufferGeometry instead.', this );\n\t\t\t\t\treturn;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tbindingType = this.BindingType.ArrayElement;\n\n\t\t\tthis.resolvedProperty = nodeProperty;\n\t\t\tthis.propertyIndex = propertyIndex;\n\n\t\t} else if ( nodeProperty.fromArray !== undefined && nodeProperty.toArray !== undefined ) {\n\n\t\t\t// must use copy for Object3D.Euler/Quaternion\n\n\t\t\tbindingType = this.BindingType.HasFromToArray;\n\n\t\t\tthis.resolvedProperty = nodeProperty;\n\n\t\t} else if ( Array.isArray( nodeProperty ) ) {\n\n\t\t\tbindingType = this.BindingType.EntireArray;\n\n\t\t\tthis.resolvedProperty = nodeProperty;\n\n\t\t} else {\n\n\t\t\tthis.propertyName = propertyName;\n\n\t\t}\n\n\t\t// select getter / setter\n\t\tthis.getValue = this.GetterByBindingType[ bindingType ];\n\t\tthis.setValue = this.SetterByBindingTypeAndVersioning[ bindingType ][ versioning ];\n\n\t},\n\n\tunbind: function () {\n\n\t\tthis.node = null;\n\n\t\t// back to the prototype version of getValue / setValue\n\t\t// note: avoiding to mutate the shape of 'this' via 'delete'\n\t\tthis.getValue = this._getValue_unbound;\n\t\tthis.setValue = this._setValue_unbound;\n\n\t}\n\n} );\n\n// DECLARE ALIAS AFTER assign prototype\nObject.assign( PropertyBinding.prototype, {\n\n\t// initial state of these methods that calls 'bind'\n\t_getValue_unbound: PropertyBinding.prototype.getValue,\n\t_setValue_unbound: PropertyBinding.prototype.setValue,\n\n} );\n\n/**\n *\n * A group of objects that receives a shared animation state.\n *\n * Usage:\n *\n *  - Add objects you would otherwise pass as 'root' to the\n *    constructor or the .clipAction method of AnimationMixer.\n *\n *  - Instead pass this object as 'root'.\n *\n *  - You can also add and remove objects later when the mixer\n *    is running.\n *\n * Note:\n *\n *    Objects of this class appear as one object to the mixer,\n *    so cache control of the individual objects must be done\n *    on the group.\n *\n * Limitation:\n *\n *  - The animated properties must be compatible among the\n *    all objects in the group.\n *\n *  - A single property can either be controlled through a\n *    target group or directly, but not both.\n */\n\nfunction AnimationObjectGroup() {\n\n\tthis.uuid = MathUtils.generateUUID();\n\n\t// cached objects followed by the active ones\n\tthis._objects = Array.prototype.slice.call( arguments );\n\n\tthis.nCachedObjects_ = 0; // threshold\n\t// note: read by PropertyBinding.Composite\n\n\tconst indices = {};\n\tthis._indicesByUUID = indices; // for bookkeeping\n\n\tfor ( let i = 0, n = arguments.length; i !== n; ++ i ) {\n\n\t\tindices[ arguments[ i ].uuid ] = i;\n\n\t}\n\n\tthis._paths = []; // inside: string\n\tthis._parsedPaths = []; // inside: { we don't care, here }\n\tthis._bindings = []; // inside: Array< PropertyBinding >\n\tthis._bindingsIndicesByPath = {}; // inside: indices in these arrays\n\n\tconst scope = this;\n\n\tthis.stats = {\n\n\t\tobjects: {\n\t\t\tget total() {\n\n\t\t\t\treturn scope._objects.length;\n\n\t\t\t},\n\t\t\tget inUse() {\n\n\t\t\t\treturn this.total - scope.nCachedObjects_;\n\n\t\t\t}\n\t\t},\n\t\tget bindingsPerObject() {\n\n\t\t\treturn scope._bindings.length;\n\n\t\t}\n\n\t};\n\n}\n\nObject.assign( AnimationObjectGroup.prototype, {\n\n\tisAnimationObjectGroup: true,\n\n\tadd: function () {\n\n\t\tconst objects = this._objects,\n\t\t\tindicesByUUID = this._indicesByUUID,\n\t\t\tpaths = this._paths,\n\t\t\tparsedPaths = this._parsedPaths,\n\t\t\tbindings = this._bindings,\n\t\t\tnBindings = bindings.length;\n\n\t\tlet knownObject = undefined,\n\t\t\tnObjects = objects.length,\n\t\t\tnCachedObjects = this.nCachedObjects_;\n\n\t\tfor ( let i = 0, n = arguments.length; i !== n; ++ i ) {\n\n\t\t\tconst object = arguments[ i ],\n\t\t\t\tuuid = object.uuid;\n\t\t\tlet index = indicesByUUID[ uuid ];\n\n\t\t\tif ( index === undefined ) {\n\n\t\t\t\t// unknown object -> add it to the ACTIVE region\n\n\t\t\t\tindex = nObjects ++;\n\t\t\t\tindicesByUUID[ uuid ] = index;\n\t\t\t\tobjects.push( object );\n\n\t\t\t\t// accounting is done, now do the same for all bindings\n\n\t\t\t\tfor ( let j = 0, m = nBindings; j !== m; ++ j ) {\n\n\t\t\t\t\tbindings[ j ].push( new PropertyBinding( object, paths[ j ], parsedPaths[ j ] ) );\n\n\t\t\t\t}\n\n\t\t\t} else if ( index < nCachedObjects ) {\n\n\t\t\t\tknownObject = objects[ index ];\n\n\t\t\t\t// move existing object to the ACTIVE region\n\n\t\t\t\tconst firstActiveIndex = -- nCachedObjects,\n\t\t\t\t\tlastCachedObject = objects[ firstActiveIndex ];\n\n\t\t\t\tindicesByUUID[ lastCachedObject.uuid ] = index;\n\t\t\t\tobjects[ index ] = lastCachedObject;\n\n\t\t\t\tindicesByUUID[ uuid ] = firstActiveIndex;\n\t\t\t\tobjects[ firstActiveIndex ] = object;\n\n\t\t\t\t// accounting is done, now do the same for all bindings\n\n\t\t\t\tfor ( let j = 0, m = nBindings; j !== m; ++ j ) {\n\n\t\t\t\t\tconst bindingsForPath = bindings[ j ],\n\t\t\t\t\t\tlastCached = bindingsForPath[ firstActiveIndex ];\n\n\t\t\t\t\tlet binding = bindingsForPath[ index ];\n\n\t\t\t\t\tbindingsForPath[ index ] = lastCached;\n\n\t\t\t\t\tif ( binding === undefined ) {\n\n\t\t\t\t\t\t// since we do not bother to create new bindings\n\t\t\t\t\t\t// for objects that are cached, the binding may\n\t\t\t\t\t\t// or may not exist\n\n\t\t\t\t\t\tbinding = new PropertyBinding( object, paths[ j ], parsedPaths[ j ] );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbindingsForPath[ firstActiveIndex ] = binding;\n\n\t\t\t\t}\n\n\t\t\t} else if ( objects[ index ] !== knownObject ) {\n\n\t\t\t\tconsole.error( 'THREE.AnimationObjectGroup: Different objects with the same UUID ' +\n\t\t\t\t\t'detected. Clean the caches or recreate your infrastructure when reloading scenes.' );\n\n\t\t\t} // else the object is already where we want it to be\n\n\t\t} // for arguments\n\n\t\tthis.nCachedObjects_ = nCachedObjects;\n\n\t},\n\n\tremove: function () {\n\n\t\tconst objects = this._objects,\n\t\t\tindicesByUUID = this._indicesByUUID,\n\t\t\tbindings = this._bindings,\n\t\t\tnBindings = bindings.length;\n\n\t\tlet nCachedObjects = this.nCachedObjects_;\n\n\t\tfor ( let i = 0, n = arguments.length; i !== n; ++ i ) {\n\n\t\t\tconst object = arguments[ i ],\n\t\t\t\tuuid = object.uuid,\n\t\t\t\tindex = indicesByUUID[ uuid ];\n\n\t\t\tif ( index !== undefined && index >= nCachedObjects ) {\n\n\t\t\t\t// move existing object into the CACHED region\n\n\t\t\t\tconst lastCachedIndex = nCachedObjects ++,\n\t\t\t\t\tfirstActiveObject = objects[ lastCachedIndex ];\n\n\t\t\t\tindicesByUUID[ firstActiveObject.uuid ] = index;\n\t\t\t\tobjects[ index ] = firstActiveObject;\n\n\t\t\t\tindicesByUUID[ uuid ] = lastCachedIndex;\n\t\t\t\tobjects[ lastCachedIndex ] = object;\n\n\t\t\t\t// accounting is done, now do the same for all bindings\n\n\t\t\t\tfor ( let j = 0, m = nBindings; j !== m; ++ j ) {\n\n\t\t\t\t\tconst bindingsForPath = bindings[ j ],\n\t\t\t\t\t\tfirstActive = bindingsForPath[ lastCachedIndex ],\n\t\t\t\t\t\tbinding = bindingsForPath[ index ];\n\n\t\t\t\t\tbindingsForPath[ index ] = firstActive;\n\t\t\t\t\tbindingsForPath[ lastCachedIndex ] = binding;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} // for arguments\n\n\t\tthis.nCachedObjects_ = nCachedObjects;\n\n\t},\n\n\t// remove & forget\n\tuncache: function () {\n\n\t\tconst objects = this._objects,\n\t\t\tindicesByUUID = this._indicesByUUID,\n\t\t\tbindings = this._bindings,\n\t\t\tnBindings = bindings.length;\n\n\t\tlet nCachedObjects = this.nCachedObjects_,\n\t\t\tnObjects = objects.length;\n\n\t\tfor ( let i = 0, n = arguments.length; i !== n; ++ i ) {\n\n\t\t\tconst object = arguments[ i ],\n\t\t\t\tuuid = object.uuid,\n\t\t\t\tindex = indicesByUUID[ uuid ];\n\n\t\t\tif ( index !== undefined ) {\n\n\t\t\t\tdelete indicesByUUID[ uuid ];\n\n\t\t\t\tif ( index < nCachedObjects ) {\n\n\t\t\t\t\t// object is cached, shrink the CACHED region\n\n\t\t\t\t\tconst firstActiveIndex = -- nCachedObjects,\n\t\t\t\t\t\tlastCachedObject = objects[ firstActiveIndex ],\n\t\t\t\t\t\tlastIndex = -- nObjects,\n\t\t\t\t\t\tlastObject = objects[ lastIndex ];\n\n\t\t\t\t\t// last cached object takes this object's place\n\t\t\t\t\tindicesByUUID[ lastCachedObject.uuid ] = index;\n\t\t\t\t\tobjects[ index ] = lastCachedObject;\n\n\t\t\t\t\t// last object goes to the activated slot and pop\n\t\t\t\t\tindicesByUUID[ lastObject.uuid ] = firstActiveIndex;\n\t\t\t\t\tobjects[ firstActiveIndex ] = lastObject;\n\t\t\t\t\tobjects.pop();\n\n\t\t\t\t\t// accounting is done, now do the same for all bindings\n\n\t\t\t\t\tfor ( let j = 0, m = nBindings; j !== m; ++ j ) {\n\n\t\t\t\t\t\tconst bindingsForPath = bindings[ j ],\n\t\t\t\t\t\t\tlastCached = bindingsForPath[ firstActiveIndex ],\n\t\t\t\t\t\t\tlast = bindingsForPath[ lastIndex ];\n\n\t\t\t\t\t\tbindingsForPath[ index ] = lastCached;\n\t\t\t\t\t\tbindingsForPath[ firstActiveIndex ] = last;\n\t\t\t\t\t\tbindingsForPath.pop();\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// object is active, just swap with the last and pop\n\n\t\t\t\t\tconst lastIndex = -- nObjects,\n\t\t\t\t\t\tlastObject = objects[ lastIndex ];\n\n\t\t\t\t\tif ( lastIndex > 0 ) {\n\n\t\t\t\t\t\tindicesByUUID[ lastObject.uuid ] = index;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tobjects[ index ] = lastObject;\n\t\t\t\t\tobjects.pop();\n\n\t\t\t\t\t// accounting is done, now do the same for all bindings\n\n\t\t\t\t\tfor ( let j = 0, m = nBindings; j !== m; ++ j ) {\n\n\t\t\t\t\t\tconst bindingsForPath = bindings[ j ];\n\n\t\t\t\t\t\tbindingsForPath[ index ] = bindingsForPath[ lastIndex ];\n\t\t\t\t\t\tbindingsForPath.pop();\n\n\t\t\t\t\t}\n\n\t\t\t\t} // cached or active\n\n\t\t\t} // if object is known\n\n\t\t} // for arguments\n\n\t\tthis.nCachedObjects_ = nCachedObjects;\n\n\t},\n\n\t// Internal interface used by befriended PropertyBinding.Composite:\n\n\tsubscribe_: function ( path, parsedPath ) {\n\n\t\t// returns an array of bindings for the given path that is changed\n\t\t// according to the contained objects in the group\n\n\t\tconst indicesByPath = this._bindingsIndicesByPath;\n\t\tlet index = indicesByPath[ path ];\n\t\tconst bindings = this._bindings;\n\n\t\tif ( index !== undefined ) return bindings[ index ];\n\n\t\tconst paths = this._paths,\n\t\t\tparsedPaths = this._parsedPaths,\n\t\t\tobjects = this._objects,\n\t\t\tnObjects = objects.length,\n\t\t\tnCachedObjects = this.nCachedObjects_,\n\t\t\tbindingsForPath = new Array( nObjects );\n\n\t\tindex = bindings.length;\n\n\t\tindicesByPath[ path ] = index;\n\n\t\tpaths.push( path );\n\t\tparsedPaths.push( parsedPath );\n\t\tbindings.push( bindingsForPath );\n\n\t\tfor ( let i = nCachedObjects, n = objects.length; i !== n; ++ i ) {\n\n\t\t\tconst object = objects[ i ];\n\t\t\tbindingsForPath[ i ] = new PropertyBinding( object, path, parsedPath );\n\n\t\t}\n\n\t\treturn bindingsForPath;\n\n\t},\n\n\tunsubscribe_: function ( path ) {\n\n\t\t// tells the group to forget about a property path and no longer\n\t\t// update the array previously obtained with 'subscribe_'\n\n\t\tconst indicesByPath = this._bindingsIndicesByPath,\n\t\t\tindex = indicesByPath[ path ];\n\n\t\tif ( index !== undefined ) {\n\n\t\t\tconst paths = this._paths,\n\t\t\t\tparsedPaths = this._parsedPaths,\n\t\t\t\tbindings = this._bindings,\n\t\t\t\tlastBindingsIndex = bindings.length - 1,\n\t\t\t\tlastBindings = bindings[ lastBindingsIndex ],\n\t\t\t\tlastBindingsPath = path[ lastBindingsIndex ];\n\n\t\t\tindicesByPath[ lastBindingsPath ] = index;\n\n\t\t\tbindings[ index ] = lastBindings;\n\t\t\tbindings.pop();\n\n\t\t\tparsedPaths[ index ] = parsedPaths[ lastBindingsIndex ];\n\t\t\tparsedPaths.pop();\n\n\t\t\tpaths[ index ] = paths[ lastBindingsIndex ];\n\t\t\tpaths.pop();\n\n\t\t}\n\n\t}\n\n} );\n\nclass AnimationAction {\n\n\tconstructor( mixer, clip, localRoot = null, blendMode = clip.blendMode ) {\n\n\t\tthis._mixer = mixer;\n\t\tthis._clip = clip;\n\t\tthis._localRoot = localRoot;\n\t\tthis.blendMode = blendMode;\n\n\t\tconst tracks = clip.tracks,\n\t\t\tnTracks = tracks.length,\n\t\t\tinterpolants = new Array( nTracks );\n\n\t\tconst interpolantSettings = {\n\t\t\tendingStart: ZeroCurvatureEnding,\n\t\t\tendingEnd: ZeroCurvatureEnding\n\t\t};\n\n\t\tfor ( let i = 0; i !== nTracks; ++ i ) {\n\n\t\t\tconst interpolant = tracks[ i ].createInterpolant( null );\n\t\t\tinterpolants[ i ] = interpolant;\n\t\t\tinterpolant.settings = interpolantSettings;\n\n\t\t}\n\n\t\tthis._interpolantSettings = interpolantSettings;\n\n\t\tthis._interpolants = interpolants; // bound by the mixer\n\n\t\t// inside: PropertyMixer (managed by the mixer)\n\t\tthis._propertyBindings = new Array( nTracks );\n\n\t\tthis._cacheIndex = null; // for the memory manager\n\t\tthis._byClipCacheIndex = null; // for the memory manager\n\n\t\tthis._timeScaleInterpolant = null;\n\t\tthis._weightInterpolant = null;\n\n\t\tthis.loop = LoopRepeat;\n\t\tthis._loopCount = - 1;\n\n\t\t// global mixer time when the action is to be started\n\t\t// it's set back to 'null' upon start of the action\n\t\tthis._startTime = null;\n\n\t\t// scaled local time of the action\n\t\t// gets clamped or wrapped to 0..clip.duration according to loop\n\t\tthis.time = 0;\n\n\t\tthis.timeScale = 1;\n\t\tthis._effectiveTimeScale = 1;\n\n\t\tthis.weight = 1;\n\t\tthis._effectiveWeight = 1;\n\n\t\tthis.repetitions = Infinity; // no. of repetitions when looping\n\n\t\tthis.paused = false; // true -> zero effective time scale\n\t\tthis.enabled = true; // false -> zero effective weight\n\n\t\tthis.clampWhenFinished = false;// keep feeding the last frame?\n\n\t\tthis.zeroSlopeAtStart = true;// for smooth interpolation w/o separate\n\t\tthis.zeroSlopeAtEnd = true;// clips for start, loop and end\n\n\t}\n\n\t// State & Scheduling\n\n\tplay() {\n\n\t\tthis._mixer._activateAction( this );\n\n\t\treturn this;\n\n\t}\n\n\tstop() {\n\n\t\tthis._mixer._deactivateAction( this );\n\n\t\treturn this.reset();\n\n\t}\n\n\treset() {\n\n\t\tthis.paused = false;\n\t\tthis.enabled = true;\n\n\t\tthis.time = 0; // restart clip\n\t\tthis._loopCount = - 1;// forget previous loops\n\t\tthis._startTime = null;// forget scheduling\n\n\t\treturn this.stopFading().stopWarping();\n\n\t}\n\n\tisRunning() {\n\n\t\treturn this.enabled && ! this.paused && this.timeScale !== 0 &&\n\t\t\tthis._startTime === null && this._mixer._isActiveAction( this );\n\n\t}\n\n\t// return true when play has been called\n\tisScheduled() {\n\n\t\treturn this._mixer._isActiveAction( this );\n\n\t}\n\n\tstartAt( time ) {\n\n\t\tthis._startTime = time;\n\n\t\treturn this;\n\n\t}\n\n\tsetLoop( mode, repetitions ) {\n\n\t\tthis.loop = mode;\n\t\tthis.repetitions = repetitions;\n\n\t\treturn this;\n\n\t}\n\n\t// Weight\n\n\t// set the weight stopping any scheduled fading\n\t// although .enabled = false yields an effective weight of zero, this\n\t// method does *not* change .enabled, because it would be confusing\n\tsetEffectiveWeight( weight ) {\n\n\t\tthis.weight = weight;\n\n\t\t// note: same logic as when updated at runtime\n\t\tthis._effectiveWeight = this.enabled ? weight : 0;\n\n\t\treturn this.stopFading();\n\n\t}\n\n\t// return the weight considering fading and .enabled\n\tgetEffectiveWeight() {\n\n\t\treturn this._effectiveWeight;\n\n\t}\n\n\tfadeIn( duration ) {\n\n\t\treturn this._scheduleFading( duration, 0, 1 );\n\n\t}\n\n\tfadeOut( duration ) {\n\n\t\treturn this._scheduleFading( duration, 1, 0 );\n\n\t}\n\n\tcrossFadeFrom( fadeOutAction, duration, warp ) {\n\n\t\tfadeOutAction.fadeOut( duration );\n\t\tthis.fadeIn( duration );\n\n\t\tif ( warp ) {\n\n\t\t\tconst fadeInDuration = this._clip.duration,\n\t\t\t\tfadeOutDuration = fadeOutAction._clip.duration,\n\n\t\t\t\tstartEndRatio = fadeOutDuration / fadeInDuration,\n\t\t\t\tendStartRatio = fadeInDuration / fadeOutDuration;\n\n\t\t\tfadeOutAction.warp( 1.0, startEndRatio, duration );\n\t\t\tthis.warp( endStartRatio, 1.0, duration );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tcrossFadeTo( fadeInAction, duration, warp ) {\n\n\t\treturn fadeInAction.crossFadeFrom( this, duration, warp );\n\n\t}\n\n\tstopFading() {\n\n\t\tconst weightInterpolant = this._weightInterpolant;\n\n\t\tif ( weightInterpolant !== null ) {\n\n\t\t\tthis._weightInterpolant = null;\n\t\t\tthis._mixer._takeBackControlInterpolant( weightInterpolant );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\t// Time Scale Control\n\n\t// set the time scale stopping any scheduled warping\n\t// although .paused = true yields an effective time scale of zero, this\n\t// method does *not* change .paused, because it would be confusing\n\tsetEffectiveTimeScale( timeScale ) {\n\n\t\tthis.timeScale = timeScale;\n\t\tthis._effectiveTimeScale = this.paused ? 0 : timeScale;\n\n\t\treturn this.stopWarping();\n\n\t}\n\n\t// return the time scale considering warping and .paused\n\tgetEffectiveTimeScale() {\n\n\t\treturn this._effectiveTimeScale;\n\n\t}\n\n\tsetDuration( duration ) {\n\n\t\tthis.timeScale = this._clip.duration / duration;\n\n\t\treturn this.stopWarping();\n\n\t}\n\n\tsyncWith( action ) {\n\n\t\tthis.time = action.time;\n\t\tthis.timeScale = action.timeScale;\n\n\t\treturn this.stopWarping();\n\n\t}\n\n\thalt( duration ) {\n\n\t\treturn this.warp( this._effectiveTimeScale, 0, duration );\n\n\t}\n\n\twarp( startTimeScale, endTimeScale, duration ) {\n\n\t\tconst mixer = this._mixer,\n\t\t\tnow = mixer.time,\n\t\t\ttimeScale = this.timeScale;\n\n\t\tlet interpolant = this._timeScaleInterpolant;\n\n\t\tif ( interpolant === null ) {\n\n\t\t\tinterpolant = mixer._lendControlInterpolant();\n\t\t\tthis._timeScaleInterpolant = interpolant;\n\n\t\t}\n\n\t\tconst times = interpolant.parameterPositions,\n\t\t\tvalues = interpolant.sampleValues;\n\n\t\ttimes[ 0 ] = now;\n\t\ttimes[ 1 ] = now + duration;\n\n\t\tvalues[ 0 ] = startTimeScale / timeScale;\n\t\tvalues[ 1 ] = endTimeScale / timeScale;\n\n\t\treturn this;\n\n\t}\n\n\tstopWarping() {\n\n\t\tconst timeScaleInterpolant = this._timeScaleInterpolant;\n\n\t\tif ( timeScaleInterpolant !== null ) {\n\n\t\t\tthis._timeScaleInterpolant = null;\n\t\t\tthis._mixer._takeBackControlInterpolant( timeScaleInterpolant );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\t// Object Accessors\n\n\tgetMixer() {\n\n\t\treturn this._mixer;\n\n\t}\n\n\tgetClip() {\n\n\t\treturn this._clip;\n\n\t}\n\n\tgetRoot() {\n\n\t\treturn this._localRoot || this._mixer._root;\n\n\t}\n\n\t// Interna\n\n\t_update( time, deltaTime, timeDirection, accuIndex ) {\n\n\t\t// called by the mixer\n\n\t\tif ( ! this.enabled ) {\n\n\t\t\t// call ._updateWeight() to update ._effectiveWeight\n\n\t\t\tthis._updateWeight( time );\n\t\t\treturn;\n\n\t\t}\n\n\t\tconst startTime = this._startTime;\n\n\t\tif ( startTime !== null ) {\n\n\t\t\t// check for scheduled start of action\n\n\t\t\tconst timeRunning = ( time - startTime ) * timeDirection;\n\t\t\tif ( timeRunning < 0 || timeDirection === 0 ) {\n\n\t\t\t\treturn; // yet to come / don't decide when delta = 0\n\n\t\t\t}\n\n\t\t\t// start\n\n\t\t\tthis._startTime = null; // unschedule\n\t\t\tdeltaTime = timeDirection * timeRunning;\n\n\t\t}\n\n\t\t// apply time scale and advance time\n\n\t\tdeltaTime *= this._updateTimeScale( time );\n\t\tconst clipTime = this._updateTime( deltaTime );\n\n\t\t// note: _updateTime may disable the action resulting in\n\t\t// an effective weight of 0\n\n\t\tconst weight = this._updateWeight( time );\n\n\t\tif ( weight > 0 ) {\n\n\t\t\tconst interpolants = this._interpolants;\n\t\t\tconst propertyMixers = this._propertyBindings;\n\n\t\t\tswitch ( this.blendMode ) {\n\n\t\t\t\tcase AdditiveAnimationBlendMode:\n\n\t\t\t\t\tfor ( let j = 0, m = interpolants.length; j !== m; ++ j ) {\n\n\t\t\t\t\t\tinterpolants[ j ].evaluate( clipTime );\n\t\t\t\t\t\tpropertyMixers[ j ].accumulateAdditive( weight );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase NormalAnimationBlendMode:\n\t\t\t\tdefault:\n\n\t\t\t\t\tfor ( let j = 0, m = interpolants.length; j !== m; ++ j ) {\n\n\t\t\t\t\t\tinterpolants[ j ].evaluate( clipTime );\n\t\t\t\t\t\tpropertyMixers[ j ].accumulate( accuIndex, weight );\n\n\t\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\t_updateWeight( time ) {\n\n\t\tlet weight = 0;\n\n\t\tif ( this.enabled ) {\n\n\t\t\tweight = this.weight;\n\t\t\tconst interpolant = this._weightInterpolant;\n\n\t\t\tif ( interpolant !== null ) {\n\n\t\t\t\tconst interpolantValue = interpolant.evaluate( time )[ 0 ];\n\n\t\t\t\tweight *= interpolantValue;\n\n\t\t\t\tif ( time > interpolant.parameterPositions[ 1 ] ) {\n\n\t\t\t\t\tthis.stopFading();\n\n\t\t\t\t\tif ( interpolantValue === 0 ) {\n\n\t\t\t\t\t\t// faded out, disable\n\t\t\t\t\t\tthis.enabled = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis._effectiveWeight = weight;\n\t\treturn weight;\n\n\t}\n\n\t_updateTimeScale( time ) {\n\n\t\tlet timeScale = 0;\n\n\t\tif ( ! this.paused ) {\n\n\t\t\ttimeScale = this.timeScale;\n\n\t\t\tconst interpolant = this._timeScaleInterpolant;\n\n\t\t\tif ( interpolant !== null ) {\n\n\t\t\t\tconst interpolantValue = interpolant.evaluate( time )[ 0 ];\n\n\t\t\t\ttimeScale *= interpolantValue;\n\n\t\t\t\tif ( time > interpolant.parameterPositions[ 1 ] ) {\n\n\t\t\t\t\tthis.stopWarping();\n\n\t\t\t\t\tif ( timeScale === 0 ) {\n\n\t\t\t\t\t\t// motion has halted, pause\n\t\t\t\t\t\tthis.paused = true;\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\t// warp done - apply final time scale\n\t\t\t\t\t\tthis.timeScale = timeScale;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis._effectiveTimeScale = timeScale;\n\t\treturn timeScale;\n\n\t}\n\n\t_updateTime( deltaTime ) {\n\n\t\tconst duration = this._clip.duration;\n\t\tconst loop = this.loop;\n\n\t\tlet time = this.time + deltaTime;\n\t\tlet loopCount = this._loopCount;\n\n\t\tconst pingPong = ( loop === LoopPingPong );\n\n\t\tif ( deltaTime === 0 ) {\n\n\t\t\tif ( loopCount === - 1 ) return time;\n\n\t\t\treturn ( pingPong && ( loopCount & 1 ) === 1 ) ? duration - time : time;\n\n\t\t}\n\n\t\tif ( loop === LoopOnce ) {\n\n\t\t\tif ( loopCount === - 1 ) {\n\n\t\t\t\t// just started\n\n\t\t\t\tthis._loopCount = 0;\n\t\t\t\tthis._setEndings( true, true, false );\n\n\t\t\t}\n\n\t\t\thandle_stop: {\n\n\t\t\t\tif ( time >= duration ) {\n\n\t\t\t\t\ttime = duration;\n\n\t\t\t\t} else if ( time < 0 ) {\n\n\t\t\t\t\ttime = 0;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthis.time = time;\n\n\t\t\t\t\tbreak handle_stop;\n\n\t\t\t\t}\n\n\t\t\t\tif ( this.clampWhenFinished ) this.paused = true;\n\t\t\t\telse this.enabled = false;\n\n\t\t\t\tthis.time = time;\n\n\t\t\t\tthis._mixer.dispatchEvent( {\n\t\t\t\t\ttype: 'finished', action: this,\n\t\t\t\t\tdirection: deltaTime < 0 ? - 1 : 1\n\t\t\t\t} );\n\n\t\t\t}\n\n\t\t} else { // repetitive Repeat or PingPong\n\n\t\t\tif ( loopCount === - 1 ) {\n\n\t\t\t\t// just started\n\n\t\t\t\tif ( deltaTime >= 0 ) {\n\n\t\t\t\t\tloopCount = 0;\n\n\t\t\t\t\tthis._setEndings( true, this.repetitions === 0, pingPong );\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// when looping in reverse direction, the initial\n\t\t\t\t\t// transition through zero counts as a repetition,\n\t\t\t\t\t// so leave loopCount at -1\n\n\t\t\t\t\tthis._setEndings( this.repetitions === 0, true, pingPong );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( time >= duration || time < 0 ) {\n\n\t\t\t\t// wrap around\n\n\t\t\t\tconst loopDelta = Math.floor( time / duration ); // signed\n\t\t\t\ttime -= duration * loopDelta;\n\n\t\t\t\tloopCount += Math.abs( loopDelta );\n\n\t\t\t\tconst pending = this.repetitions - loopCount;\n\n\t\t\t\tif ( pending <= 0 ) {\n\n\t\t\t\t\t// have to stop (switch state, clamp time, fire event)\n\n\t\t\t\t\tif ( this.clampWhenFinished ) this.paused = true;\n\t\t\t\t\telse this.enabled = false;\n\n\t\t\t\t\ttime = deltaTime > 0 ? duration : 0;\n\n\t\t\t\t\tthis.time = time;\n\n\t\t\t\t\tthis._mixer.dispatchEvent( {\n\t\t\t\t\t\ttype: 'finished', action: this,\n\t\t\t\t\t\tdirection: deltaTime > 0 ? 1 : - 1\n\t\t\t\t\t} );\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// keep running\n\n\t\t\t\t\tif ( pending === 1 ) {\n\n\t\t\t\t\t\t// entering the last round\n\n\t\t\t\t\t\tconst atStart = deltaTime < 0;\n\t\t\t\t\t\tthis._setEndings( atStart, ! atStart, pingPong );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tthis._setEndings( false, false, pingPong );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tthis._loopCount = loopCount;\n\n\t\t\t\t\tthis.time = time;\n\n\t\t\t\t\tthis._mixer.dispatchEvent( {\n\t\t\t\t\t\ttype: 'loop', action: this, loopDelta: loopDelta\n\t\t\t\t\t} );\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tthis.time = time;\n\n\t\t\t}\n\n\t\t\tif ( pingPong && ( loopCount & 1 ) === 1 ) {\n\n\t\t\t\t// invert time for the \"pong round\"\n\n\t\t\t\treturn duration - time;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn time;\n\n\t}\n\n\t_setEndings( atStart, atEnd, pingPong ) {\n\n\t\tconst settings = this._interpolantSettings;\n\n\t\tif ( pingPong ) {\n\n\t\t\tsettings.endingStart = ZeroSlopeEnding;\n\t\t\tsettings.endingEnd = ZeroSlopeEnding;\n\n\t\t} else {\n\n\t\t\t// assuming for LoopOnce atStart == atEnd == true\n\n\t\t\tif ( atStart ) {\n\n\t\t\t\tsettings.endingStart = this.zeroSlopeAtStart ? ZeroSlopeEnding : ZeroCurvatureEnding;\n\n\t\t\t} else {\n\n\t\t\t\tsettings.endingStart = WrapAroundEnding;\n\n\t\t\t}\n\n\t\t\tif ( atEnd ) {\n\n\t\t\t\tsettings.endingEnd = this.zeroSlopeAtEnd ? ZeroSlopeEnding : ZeroCurvatureEnding;\n\n\t\t\t} else {\n\n\t\t\t\tsettings.endingEnd \t = WrapAroundEnding;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\t_scheduleFading( duration, weightNow, weightThen ) {\n\n\t\tconst mixer = this._mixer, now = mixer.time;\n\t\tlet interpolant = this._weightInterpolant;\n\n\t\tif ( interpolant === null ) {\n\n\t\t\tinterpolant = mixer._lendControlInterpolant();\n\t\t\tthis._weightInterpolant = interpolant;\n\n\t\t}\n\n\t\tconst times = interpolant.parameterPositions,\n\t\t\tvalues = interpolant.sampleValues;\n\n\t\ttimes[ 0 ] = now;\n\t\tvalues[ 0 ] = weightNow;\n\t\ttimes[ 1 ] = now + duration;\n\t\tvalues[ 1 ] = weightThen;\n\n\t\treturn this;\n\n\t}\n\n}\n\nfunction AnimationMixer( root ) {\n\n\tthis._root = root;\n\tthis._initMemoryManager();\n\tthis._accuIndex = 0;\n\n\tthis.time = 0;\n\n\tthis.timeScale = 1.0;\n\n}\n\nAnimationMixer.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {\n\n\tconstructor: AnimationMixer,\n\n\t_bindAction: function ( action, prototypeAction ) {\n\n\t\tconst root = action._localRoot || this._root,\n\t\t\ttracks = action._clip.tracks,\n\t\t\tnTracks = tracks.length,\n\t\t\tbindings = action._propertyBindings,\n\t\t\tinterpolants = action._interpolants,\n\t\t\trootUuid = root.uuid,\n\t\t\tbindingsByRoot = this._bindingsByRootAndName;\n\n\t\tlet bindingsByName = bindingsByRoot[ rootUuid ];\n\n\t\tif ( bindingsByName === undefined ) {\n\n\t\t\tbindingsByName = {};\n\t\t\tbindingsByRoot[ rootUuid ] = bindingsByName;\n\n\t\t}\n\n\t\tfor ( let i = 0; i !== nTracks; ++ i ) {\n\n\t\t\tconst track = tracks[ i ],\n\t\t\t\ttrackName = track.name;\n\n\t\t\tlet binding = bindingsByName[ trackName ];\n\n\t\t\tif ( binding !== undefined ) {\n\n\t\t\t\tbindings[ i ] = binding;\n\n\t\t\t} else {\n\n\t\t\t\tbinding = bindings[ i ];\n\n\t\t\t\tif ( binding !== undefined ) {\n\n\t\t\t\t\t// existing binding, make sure the cache knows\n\n\t\t\t\t\tif ( binding._cacheIndex === null ) {\n\n\t\t\t\t\t\t++ binding.referenceCount;\n\t\t\t\t\t\tthis._addInactiveBinding( binding, rootUuid, trackName );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tcontinue;\n\n\t\t\t\t}\n\n\t\t\t\tconst path = prototypeAction && prototypeAction.\n\t\t\t\t\t_propertyBindings[ i ].binding.parsedPath;\n\n\t\t\t\tbinding = new PropertyMixer(\n\t\t\t\t\tPropertyBinding.create( root, trackName, path ),\n\t\t\t\t\ttrack.ValueTypeName, track.getValueSize() );\n\n\t\t\t\t++ binding.referenceCount;\n\t\t\t\tthis._addInactiveBinding( binding, rootUuid, trackName );\n\n\t\t\t\tbindings[ i ] = binding;\n\n\t\t\t}\n\n\t\t\tinterpolants[ i ].resultBuffer = binding.buffer;\n\n\t\t}\n\n\t},\n\n\t_activateAction: function ( action ) {\n\n\t\tif ( ! this._isActiveAction( action ) ) {\n\n\t\t\tif ( action._cacheIndex === null ) {\n\n\t\t\t\t// this action has been forgotten by the cache, but the user\n\t\t\t\t// appears to be still using it -> rebind\n\n\t\t\t\tconst rootUuid = ( action._localRoot || this._root ).uuid,\n\t\t\t\t\tclipUuid = action._clip.uuid,\n\t\t\t\t\tactionsForClip = this._actionsByClip[ clipUuid ];\n\n\t\t\t\tthis._bindAction( action,\n\t\t\t\t\tactionsForClip && actionsForClip.knownActions[ 0 ] );\n\n\t\t\t\tthis._addInactiveAction( action, clipUuid, rootUuid );\n\n\t\t\t}\n\n\t\t\tconst bindings = action._propertyBindings;\n\n\t\t\t// increment reference counts / sort out state\n\t\t\tfor ( let i = 0, n = bindings.length; i !== n; ++ i ) {\n\n\t\t\t\tconst binding = bindings[ i ];\n\n\t\t\t\tif ( binding.useCount ++ === 0 ) {\n\n\t\t\t\t\tthis._lendBinding( binding );\n\t\t\t\t\tbinding.saveOriginalState();\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tthis._lendAction( action );\n\n\t\t}\n\n\t},\n\n\t_deactivateAction: function ( action ) {\n\n\t\tif ( this._isActiveAction( action ) ) {\n\n\t\t\tconst bindings = action._propertyBindings;\n\n\t\t\t// decrement reference counts / sort out state\n\t\t\tfor ( let i = 0, n = bindings.length; i !== n; ++ i ) {\n\n\t\t\t\tconst binding = bindings[ i ];\n\n\t\t\t\tif ( -- binding.useCount === 0 ) {\n\n\t\t\t\t\tbinding.restoreOriginalState();\n\t\t\t\t\tthis._takeBackBinding( binding );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tthis._takeBackAction( action );\n\n\t\t}\n\n\t},\n\n\t// Memory manager\n\n\t_initMemoryManager: function () {\n\n\t\tthis._actions = []; // 'nActiveActions' followed by inactive ones\n\t\tthis._nActiveActions = 0;\n\n\t\tthis._actionsByClip = {};\n\t\t// inside:\n\t\t// {\n\t\t// \tknownActions: Array< AnimationAction > - used as prototypes\n\t\t// \tactionByRoot: AnimationAction - lookup\n\t\t// }\n\n\n\t\tthis._bindings = []; // 'nActiveBindings' followed by inactive ones\n\t\tthis._nActiveBindings = 0;\n\n\t\tthis._bindingsByRootAndName = {}; // inside: Map< name, PropertyMixer >\n\n\n\t\tthis._controlInterpolants = []; // same game as above\n\t\tthis._nActiveControlInterpolants = 0;\n\n\t\tconst scope = this;\n\n\t\tthis.stats = {\n\n\t\t\tactions: {\n\t\t\t\tget total() {\n\n\t\t\t\t\treturn scope._actions.length;\n\n\t\t\t\t},\n\t\t\t\tget inUse() {\n\n\t\t\t\t\treturn scope._nActiveActions;\n\n\t\t\t\t}\n\t\t\t},\n\t\t\tbindings: {\n\t\t\t\tget total() {\n\n\t\t\t\t\treturn scope._bindings.length;\n\n\t\t\t\t},\n\t\t\t\tget inUse() {\n\n\t\t\t\t\treturn scope._nActiveBindings;\n\n\t\t\t\t}\n\t\t\t},\n\t\t\tcontrolInterpolants: {\n\t\t\t\tget total() {\n\n\t\t\t\t\treturn scope._controlInterpolants.length;\n\n\t\t\t\t},\n\t\t\t\tget inUse() {\n\n\t\t\t\t\treturn scope._nActiveControlInterpolants;\n\n\t\t\t\t}\n\t\t\t}\n\n\t\t};\n\n\t},\n\n\t// Memory management for AnimationAction objects\n\n\t_isActiveAction: function ( action ) {\n\n\t\tconst index = action._cacheIndex;\n\t\treturn index !== null && index < this._nActiveActions;\n\n\t},\n\n\t_addInactiveAction: function ( action, clipUuid, rootUuid ) {\n\n\t\tconst actions = this._actions,\n\t\t\tactionsByClip = this._actionsByClip;\n\n\t\tlet actionsForClip = actionsByClip[ clipUuid ];\n\n\t\tif ( actionsForClip === undefined ) {\n\n\t\t\tactionsForClip = {\n\n\t\t\t\tknownActions: [ action ],\n\t\t\t\tactionByRoot: {}\n\n\t\t\t};\n\n\t\t\taction._byClipCacheIndex = 0;\n\n\t\t\tactionsByClip[ clipUuid ] = actionsForClip;\n\n\t\t} else {\n\n\t\t\tconst knownActions = actionsForClip.knownActions;\n\n\t\t\taction._byClipCacheIndex = knownActions.length;\n\t\t\tknownActions.push( action );\n\n\t\t}\n\n\t\taction._cacheIndex = actions.length;\n\t\tactions.push( action );\n\n\t\tactionsForClip.actionByRoot[ rootUuid ] = action;\n\n\t},\n\n\t_removeInactiveAction: function ( action ) {\n\n\t\tconst actions = this._actions,\n\t\t\tlastInactiveAction = actions[ actions.length - 1 ],\n\t\t\tcacheIndex = action._cacheIndex;\n\n\t\tlastInactiveAction._cacheIndex = cacheIndex;\n\t\tactions[ cacheIndex ] = lastInactiveAction;\n\t\tactions.pop();\n\n\t\taction._cacheIndex = null;\n\n\n\t\tconst clipUuid = action._clip.uuid,\n\t\t\tactionsByClip = this._actionsByClip,\n\t\t\tactionsForClip = actionsByClip[ clipUuid ],\n\t\t\tknownActionsForClip = actionsForClip.knownActions,\n\n\t\t\tlastKnownAction =\n\t\t\t\tknownActionsForClip[ knownActionsForClip.length - 1 ],\n\n\t\t\tbyClipCacheIndex = action._byClipCacheIndex;\n\n\t\tlastKnownAction._byClipCacheIndex = byClipCacheIndex;\n\t\tknownActionsForClip[ byClipCacheIndex ] = lastKnownAction;\n\t\tknownActionsForClip.pop();\n\n\t\taction._byClipCacheIndex = null;\n\n\n\t\tconst actionByRoot = actionsForClip.actionByRoot,\n\t\t\trootUuid = ( action._localRoot || this._root ).uuid;\n\n\t\tdelete actionByRoot[ rootUuid ];\n\n\t\tif ( knownActionsForClip.length === 0 ) {\n\n\t\t\tdelete actionsByClip[ clipUuid ];\n\n\t\t}\n\n\t\tthis._removeInactiveBindingsForAction( action );\n\n\t},\n\n\t_removeInactiveBindingsForAction: function ( action ) {\n\n\t\tconst bindings = action._propertyBindings;\n\n\t\tfor ( let i = 0, n = bindings.length; i !== n; ++ i ) {\n\n\t\t\tconst binding = bindings[ i ];\n\n\t\t\tif ( -- binding.referenceCount === 0 ) {\n\n\t\t\t\tthis._removeInactiveBinding( binding );\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\t_lendAction: function ( action ) {\n\n\t\t// [ active actions |  inactive actions  ]\n\t\t// [  active actions >| inactive actions ]\n\t\t//                 s        a\n\t\t//                  <-swap->\n\t\t//                 a        s\n\n\t\tconst actions = this._actions,\n\t\t\tprevIndex = action._cacheIndex,\n\n\t\t\tlastActiveIndex = this._nActiveActions ++,\n\n\t\t\tfirstInactiveAction = actions[ lastActiveIndex ];\n\n\t\taction._cacheIndex = lastActiveIndex;\n\t\tactions[ lastActiveIndex ] = action;\n\n\t\tfirstInactiveAction._cacheIndex = prevIndex;\n\t\tactions[ prevIndex ] = firstInactiveAction;\n\n\t},\n\n\t_takeBackAction: function ( action ) {\n\n\t\t// [  active actions  | inactive actions ]\n\t\t// [ active actions |< inactive actions  ]\n\t\t//        a        s\n\t\t//         <-swap->\n\t\t//        s        a\n\n\t\tconst actions = this._actions,\n\t\t\tprevIndex = action._cacheIndex,\n\n\t\t\tfirstInactiveIndex = -- this._nActiveActions,\n\n\t\t\tlastActiveAction = actions[ firstInactiveIndex ];\n\n\t\taction._cacheIndex = firstInactiveIndex;\n\t\tactions[ firstInactiveIndex ] = action;\n\n\t\tlastActiveAction._cacheIndex = prevIndex;\n\t\tactions[ prevIndex ] = lastActiveAction;\n\n\t},\n\n\t// Memory management for PropertyMixer objects\n\n\t_addInactiveBinding: function ( binding, rootUuid, trackName ) {\n\n\t\tconst bindingsByRoot = this._bindingsByRootAndName,\n\t\t\tbindings = this._bindings;\n\n\t\tlet bindingByName = bindingsByRoot[ rootUuid ];\n\n\t\tif ( bindingByName === undefined ) {\n\n\t\t\tbindingByName = {};\n\t\t\tbindingsByRoot[ rootUuid ] = bindingByName;\n\n\t\t}\n\n\t\tbindingByName[ trackName ] = binding;\n\n\t\tbinding._cacheIndex = bindings.length;\n\t\tbindings.push( binding );\n\n\t},\n\n\t_removeInactiveBinding: function ( binding ) {\n\n\t\tconst bindings = this._bindings,\n\t\t\tpropBinding = binding.binding,\n\t\t\trootUuid = propBinding.rootNode.uuid,\n\t\t\ttrackName = propBinding.path,\n\t\t\tbindingsByRoot = this._bindingsByRootAndName,\n\t\t\tbindingByName = bindingsByRoot[ rootUuid ],\n\n\t\t\tlastInactiveBinding = bindings[ bindings.length - 1 ],\n\t\t\tcacheIndex = binding._cacheIndex;\n\n\t\tlastInactiveBinding._cacheIndex = cacheIndex;\n\t\tbindings[ cacheIndex ] = lastInactiveBinding;\n\t\tbindings.pop();\n\n\t\tdelete bindingByName[ trackName ];\n\n\t\tif ( Object.keys( bindingByName ).length === 0 ) {\n\n\t\t\tdelete bindingsByRoot[ rootUuid ];\n\n\t\t}\n\n\t},\n\n\t_lendBinding: function ( binding ) {\n\n\t\tconst bindings = this._bindings,\n\t\t\tprevIndex = binding._cacheIndex,\n\n\t\t\tlastActiveIndex = this._nActiveBindings ++,\n\n\t\t\tfirstInactiveBinding = bindings[ lastActiveIndex ];\n\n\t\tbinding._cacheIndex = lastActiveIndex;\n\t\tbindings[ lastActiveIndex ] = binding;\n\n\t\tfirstInactiveBinding._cacheIndex = prevIndex;\n\t\tbindings[ prevIndex ] = firstInactiveBinding;\n\n\t},\n\n\t_takeBackBinding: function ( binding ) {\n\n\t\tconst bindings = this._bindings,\n\t\t\tprevIndex = binding._cacheIndex,\n\n\t\t\tfirstInactiveIndex = -- this._nActiveBindings,\n\n\t\t\tlastActiveBinding = bindings[ firstInactiveIndex ];\n\n\t\tbinding._cacheIndex = firstInactiveIndex;\n\t\tbindings[ firstInactiveIndex ] = binding;\n\n\t\tlastActiveBinding._cacheIndex = prevIndex;\n\t\tbindings[ prevIndex ] = lastActiveBinding;\n\n\t},\n\n\n\t// Memory management of Interpolants for weight and time scale\n\n\t_lendControlInterpolant: function () {\n\n\t\tconst interpolants = this._controlInterpolants,\n\t\t\tlastActiveIndex = this._nActiveControlInterpolants ++;\n\n\t\tlet interpolant = interpolants[ lastActiveIndex ];\n\n\t\tif ( interpolant === undefined ) {\n\n\t\t\tinterpolant = new LinearInterpolant(\n\t\t\t\tnew Float32Array( 2 ), new Float32Array( 2 ),\n\t\t\t\t1, this._controlInterpolantsResultBuffer );\n\n\t\t\tinterpolant.__cacheIndex = lastActiveIndex;\n\t\t\tinterpolants[ lastActiveIndex ] = interpolant;\n\n\t\t}\n\n\t\treturn interpolant;\n\n\t},\n\n\t_takeBackControlInterpolant: function ( interpolant ) {\n\n\t\tconst interpolants = this._controlInterpolants,\n\t\t\tprevIndex = interpolant.__cacheIndex,\n\n\t\t\tfirstInactiveIndex = -- this._nActiveControlInterpolants,\n\n\t\t\tlastActiveInterpolant = interpolants[ firstInactiveIndex ];\n\n\t\tinterpolant.__cacheIndex = firstInactiveIndex;\n\t\tinterpolants[ firstInactiveIndex ] = interpolant;\n\n\t\tlastActiveInterpolant.__cacheIndex = prevIndex;\n\t\tinterpolants[ prevIndex ] = lastActiveInterpolant;\n\n\t},\n\n\t_controlInterpolantsResultBuffer: new Float32Array( 1 ),\n\n\t// return an action for a clip optionally using a custom root target\n\t// object (this method allocates a lot of dynamic memory in case a\n\t// previously unknown clip/root combination is specified)\n\tclipAction: function ( clip, optionalRoot, blendMode ) {\n\n\t\tconst root = optionalRoot || this._root,\n\t\t\trootUuid = root.uuid;\n\n\t\tlet clipObject = typeof clip === 'string' ? AnimationClip.findByName( root, clip ) : clip;\n\n\t\tconst clipUuid = clipObject !== null ? clipObject.uuid : clip;\n\n\t\tconst actionsForClip = this._actionsByClip[ clipUuid ];\n\t\tlet prototypeAction = null;\n\n\t\tif ( blendMode === undefined ) {\n\n\t\t\tif ( clipObject !== null ) {\n\n\t\t\t\tblendMode = clipObject.blendMode;\n\n\t\t\t} else {\n\n\t\t\t\tblendMode = NormalAnimationBlendMode;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( actionsForClip !== undefined ) {\n\n\t\t\tconst existingAction = actionsForClip.actionByRoot[ rootUuid ];\n\n\t\t\tif ( existingAction !== undefined && existingAction.blendMode === blendMode ) {\n\n\t\t\t\treturn existingAction;\n\n\t\t\t}\n\n\t\t\t// we know the clip, so we don't have to parse all\n\t\t\t// the bindings again but can just copy\n\t\t\tprototypeAction = actionsForClip.knownActions[ 0 ];\n\n\t\t\t// also, take the clip from the prototype action\n\t\t\tif ( clipObject === null )\n\t\t\t\tclipObject = prototypeAction._clip;\n\n\t\t}\n\n\t\t// clip must be known when specified via string\n\t\tif ( clipObject === null ) return null;\n\n\t\t// allocate all resources required to run it\n\t\tconst newAction = new AnimationAction( this, clipObject, optionalRoot, blendMode );\n\n\t\tthis._bindAction( newAction, prototypeAction );\n\n\t\t// and make the action known to the memory manager\n\t\tthis._addInactiveAction( newAction, clipUuid, rootUuid );\n\n\t\treturn newAction;\n\n\t},\n\n\t// get an existing action\n\texistingAction: function ( clip, optionalRoot ) {\n\n\t\tconst root = optionalRoot || this._root,\n\t\t\trootUuid = root.uuid,\n\n\t\t\tclipObject = typeof clip === 'string' ?\n\t\t\t\tAnimationClip.findByName( root, clip ) : clip,\n\n\t\t\tclipUuid = clipObject ? clipObject.uuid : clip,\n\n\t\t\tactionsForClip = this._actionsByClip[ clipUuid ];\n\n\t\tif ( actionsForClip !== undefined ) {\n\n\t\t\treturn actionsForClip.actionByRoot[ rootUuid ] || null;\n\n\t\t}\n\n\t\treturn null;\n\n\t},\n\n\t// deactivates all previously scheduled actions\n\tstopAllAction: function () {\n\n\t\tconst actions = this._actions,\n\t\t\tnActions = this._nActiveActions;\n\n\t\tfor ( let i = nActions - 1; i >= 0; -- i ) {\n\n\t\t\tactions[ i ].stop();\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\t// advance the time and update apply the animation\n\tupdate: function ( deltaTime ) {\n\n\t\tdeltaTime *= this.timeScale;\n\n\t\tconst actions = this._actions,\n\t\t\tnActions = this._nActiveActions,\n\n\t\t\ttime = this.time += deltaTime,\n\t\t\ttimeDirection = Math.sign( deltaTime ),\n\n\t\t\taccuIndex = this._accuIndex ^= 1;\n\n\t\t// run active actions\n\n\t\tfor ( let i = 0; i !== nActions; ++ i ) {\n\n\t\t\tconst action = actions[ i ];\n\n\t\t\taction._update( time, deltaTime, timeDirection, accuIndex );\n\n\t\t}\n\n\t\t// update scene graph\n\n\t\tconst bindings = this._bindings,\n\t\t\tnBindings = this._nActiveBindings;\n\n\t\tfor ( let i = 0; i !== nBindings; ++ i ) {\n\n\t\t\tbindings[ i ].apply( accuIndex );\n\n\t\t}\n\n\t\treturn this;\n\n\t},\n\n\t// Allows you to seek to a specific time in an animation.\n\tsetTime: function ( timeInSeconds ) {\n\n\t\tthis.time = 0; // Zero out time attribute for AnimationMixer object;\n\t\tfor ( let i = 0; i < this._actions.length; i ++ ) {\n\n\t\t\tthis._actions[ i ].time = 0; // Zero out time attribute for all associated AnimationAction objects.\n\n\t\t}\n\n\t\treturn this.update( timeInSeconds ); // Update used to set exact time. Returns \"this\" AnimationMixer object.\n\n\t},\n\n\t// return this mixer's root target object\n\tgetRoot: function () {\n\n\t\treturn this._root;\n\n\t},\n\n\t// free all resources specific to a particular clip\n\tuncacheClip: function ( clip ) {\n\n\t\tconst actions = this._actions,\n\t\t\tclipUuid = clip.uuid,\n\t\t\tactionsByClip = this._actionsByClip,\n\t\t\tactionsForClip = actionsByClip[ clipUuid ];\n\n\t\tif ( actionsForClip !== undefined ) {\n\n\t\t\t// note: just calling _removeInactiveAction would mess up the\n\t\t\t// iteration state and also require updating the state we can\n\t\t\t// just throw away\n\n\t\t\tconst actionsToRemove = actionsForClip.knownActions;\n\n\t\t\tfor ( let i = 0, n = actionsToRemove.length; i !== n; ++ i ) {\n\n\t\t\t\tconst action = actionsToRemove[ i ];\n\n\t\t\t\tthis._deactivateAction( action );\n\n\t\t\t\tconst cacheIndex = action._cacheIndex,\n\t\t\t\t\tlastInactiveAction = actions[ actions.length - 1 ];\n\n\t\t\t\taction._cacheIndex = null;\n\t\t\t\taction._byClipCacheIndex = null;\n\n\t\t\t\tlastInactiveAction._cacheIndex = cacheIndex;\n\t\t\t\tactions[ cacheIndex ] = lastInactiveAction;\n\t\t\t\tactions.pop();\n\n\t\t\t\tthis._removeInactiveBindingsForAction( action );\n\n\t\t\t}\n\n\t\t\tdelete actionsByClip[ clipUuid ];\n\n\t\t}\n\n\t},\n\n\t// free all resources specific to a particular root target object\n\tuncacheRoot: function ( root ) {\n\n\t\tconst rootUuid = root.uuid,\n\t\t\tactionsByClip = this._actionsByClip;\n\n\t\tfor ( const clipUuid in actionsByClip ) {\n\n\t\t\tconst actionByRoot = actionsByClip[ clipUuid ].actionByRoot,\n\t\t\t\taction = actionByRoot[ rootUuid ];\n\n\t\t\tif ( action !== undefined ) {\n\n\t\t\t\tthis._deactivateAction( action );\n\t\t\t\tthis._removeInactiveAction( action );\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst bindingsByRoot = this._bindingsByRootAndName,\n\t\t\tbindingByName = bindingsByRoot[ rootUuid ];\n\n\t\tif ( bindingByName !== undefined ) {\n\n\t\t\tfor ( const trackName in bindingByName ) {\n\n\t\t\t\tconst binding = bindingByName[ trackName ];\n\t\t\t\tbinding.restoreOriginalState();\n\t\t\t\tthis._removeInactiveBinding( binding );\n\n\t\t\t}\n\n\t\t}\n\n\t},\n\n\t// remove a targeted clip from the cache\n\tuncacheAction: function ( clip, optionalRoot ) {\n\n\t\tconst action = this.existingAction( clip, optionalRoot );\n\n\t\tif ( action !== null ) {\n\n\t\t\tthis._deactivateAction( action );\n\t\t\tthis._removeInactiveAction( action );\n\n\t\t}\n\n\t}\n\n} );\n\nclass Uniform {\n\n\tconstructor( value ) {\n\n\t\tif ( typeof value === 'string' ) {\n\n\t\t\tconsole.warn( 'THREE.Uniform: Type parameter is no longer needed.' );\n\t\t\tvalue = arguments[ 1 ];\n\n\t\t}\n\n\t\tthis.value = value;\n\n\t}\n\n\tclone() {\n\n\t\treturn new Uniform( this.value.clone === undefined ? this.value : this.value.clone() );\n\n\t}\n\n}\n\nfunction InstancedInterleavedBuffer( array, stride, meshPerAttribute ) {\n\n\tInterleavedBuffer.call( this, array, stride );\n\n\tthis.meshPerAttribute = meshPerAttribute || 1;\n\n}\n\nInstancedInterleavedBuffer.prototype = Object.assign( Object.create( InterleavedBuffer.prototype ), {\n\n\tconstructor: InstancedInterleavedBuffer,\n\n\tisInstancedInterleavedBuffer: true,\n\n\tcopy: function ( source ) {\n\n\t\tInterleavedBuffer.prototype.copy.call( this, source );\n\n\t\tthis.meshPerAttribute = source.meshPerAttribute;\n\n\t\treturn this;\n\n\t},\n\n\tclone: function ( data ) {\n\n\t\tconst ib = InterleavedBuffer.prototype.clone.call( this, data );\n\n\t\tib.meshPerAttribute = this.meshPerAttribute;\n\n\t\treturn ib;\n\n\t},\n\n\ttoJSON: function ( data ) {\n\n\t\tconst json = InterleavedBuffer.prototype.toJSON.call( this, data );\n\n\t\tjson.isInstancedInterleavedBuffer = true;\n\t\tjson.meshPerAttribute = this.meshPerAttribute;\n\n\t\treturn json;\n\n\t}\n\n} );\n\nfunction GLBufferAttribute( buffer, type, itemSize, elementSize, count ) {\n\n\tthis.buffer = buffer;\n\tthis.type = type;\n\tthis.itemSize = itemSize;\n\tthis.elementSize = elementSize;\n\tthis.count = count;\n\n\tthis.version = 0;\n\n}\n\nObject.defineProperty( GLBufferAttribute.prototype, 'needsUpdate', {\n\n\tset: function ( value ) {\n\n\t\tif ( value === true ) this.version ++;\n\n\t}\n\n} );\n\nObject.assign( GLBufferAttribute.prototype, {\n\n\tisGLBufferAttribute: true,\n\n\tsetBuffer: function ( buffer ) {\n\n\t\tthis.buffer = buffer;\n\n\t\treturn this;\n\n\t},\n\n\tsetType: function ( type, elementSize ) {\n\n\t\tthis.type = type;\n\t\tthis.elementSize = elementSize;\n\n\t\treturn this;\n\n\t},\n\n\tsetItemSize: function ( itemSize ) {\n\n\t\tthis.itemSize = itemSize;\n\n\t\treturn this;\n\n\t},\n\n\tsetCount: function ( count ) {\n\n\t\tthis.count = count;\n\n\t\treturn this;\n\n\t},\n\n} );\n\nfunction Raycaster( origin, direction, near, far ) {\n\n\tthis.ray = new Ray( origin, direction );\n\t// direction is assumed to be normalized (for accurate distance calculations)\n\n\tthis.near = near || 0;\n\tthis.far = far || Infinity;\n\tthis.camera = null;\n\tthis.layers = new Layers();\n\n\tthis.params = {\n\t\tMesh: {},\n\t\tLine: { threshold: 1 },\n\t\tLOD: {},\n\t\tPoints: { threshold: 1 },\n\t\tSprite: {}\n\t};\n\n\tObject.defineProperties( this.params, {\n\t\tPointCloud: {\n\t\t\tget: function () {\n\n\t\t\t\tconsole.warn( 'THREE.Raycaster: params.PointCloud has been renamed to params.Points.' );\n\t\t\t\treturn this.Points;\n\n\t\t\t}\n\t\t}\n\t} );\n\n}\n\nfunction ascSort( a, b ) {\n\n\treturn a.distance - b.distance;\n\n}\n\nfunction intersectObject( object, raycaster, intersects, recursive ) {\n\n\tif ( object.layers.test( raycaster.layers ) ) {\n\n\t\tobject.raycast( raycaster, intersects );\n\n\t}\n\n\tif ( recursive === true ) {\n\n\t\tconst children = object.children;\n\n\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\tintersectObject( children[ i ], raycaster, intersects, true );\n\n\t\t}\n\n\t}\n\n}\n\nObject.assign( Raycaster.prototype, {\n\n\tset: function ( origin, direction ) {\n\n\t\t// direction is assumed to be normalized (for accurate distance calculations)\n\n\t\tthis.ray.set( origin, direction );\n\n\t},\n\n\tsetFromCamera: function ( coords, camera ) {\n\n\t\tif ( camera && camera.isPerspectiveCamera ) {\n\n\t\t\tthis.ray.origin.setFromMatrixPosition( camera.matrixWorld );\n\t\t\tthis.ray.direction.set( coords.x, coords.y, 0.5 ).unproject( camera ).sub( this.ray.origin ).normalize();\n\t\t\tthis.camera = camera;\n\n\t\t} else if ( camera && camera.isOrthographicCamera ) {\n\n\t\t\tthis.ray.origin.set( coords.x, coords.y, ( camera.near + camera.far ) / ( camera.near - camera.far ) ).unproject( camera ); // set origin in plane of camera\n\t\t\tthis.ray.direction.set( 0, 0, - 1 ).transformDirection( camera.matrixWorld );\n\t\t\tthis.camera = camera;\n\n\t\t} else {\n\n\t\t\tconsole.error( 'THREE.Raycaster: Unsupported camera type: ' + camera.type );\n\n\t\t}\n\n\t},\n\n\tintersectObject: function ( object, recursive, optionalTarget ) {\n\n\t\tconst intersects = optionalTarget || [];\n\n\t\tintersectObject( object, this, intersects, recursive );\n\n\t\tintersects.sort( ascSort );\n\n\t\treturn intersects;\n\n\t},\n\n\tintersectObjects: function ( objects, recursive, optionalTarget ) {\n\n\t\tconst intersects = optionalTarget || [];\n\n\t\tif ( Array.isArray( objects ) === false ) {\n\n\t\t\tconsole.warn( 'THREE.Raycaster.intersectObjects: objects is not an Array.' );\n\t\t\treturn intersects;\n\n\t\t}\n\n\t\tfor ( let i = 0, l = objects.length; i < l; i ++ ) {\n\n\t\t\tintersectObject( objects[ i ], this, intersects, recursive );\n\n\t\t}\n\n\t\tintersects.sort( ascSort );\n\n\t\treturn intersects;\n\n\t}\n\n} );\n\n/**\n * Ref: https://en.wikipedia.org/wiki/Spherical_coordinate_system\n *\n * The polar angle (phi) is measured from the positive y-axis. The positive y-axis is up.\n * The azimuthal angle (theta) is measured from the positive z-axis.\n */\n\nclass Spherical {\n\n\tconstructor( radius = 1, phi = 0, theta = 0 ) {\n\n\t\tthis.radius = radius;\n\t\tthis.phi = phi; // polar angle\n\t\tthis.theta = theta; // azimuthal angle\n\n\t\treturn this;\n\n\t}\n\n\tset( radius, phi, theta ) {\n\n\t\tthis.radius = radius;\n\t\tthis.phi = phi;\n\t\tthis.theta = theta;\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( other ) {\n\n\t\tthis.radius = other.radius;\n\t\tthis.phi = other.phi;\n\t\tthis.theta = other.theta;\n\n\t\treturn this;\n\n\t}\n\n\t// restrict phi to be betwee EPS and PI-EPS\n\tmakeSafe() {\n\n\t\tconst EPS = 0.000001;\n\t\tthis.phi = Math.max( EPS, Math.min( Math.PI - EPS, this.phi ) );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromVector3( v ) {\n\n\t\treturn this.setFromCartesianCoords( v.x, v.y, v.z );\n\n\t}\n\n\tsetFromCartesianCoords( x, y, z ) {\n\n\t\tthis.radius = Math.sqrt( x * x + y * y + z * z );\n\n\t\tif ( this.radius === 0 ) {\n\n\t\t\tthis.theta = 0;\n\t\t\tthis.phi = 0;\n\n\t\t} else {\n\n\t\t\tthis.theta = Math.atan2( x, z );\n\t\t\tthis.phi = Math.acos( MathUtils.clamp( y / this.radius, - 1, 1 ) );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n}\n\n/**\n * Ref: https://en.wikipedia.org/wiki/Cylindrical_coordinate_system\n */\n\nclass Cylindrical {\n\n\tconstructor( radius, theta, y ) {\n\n\t\tthis.radius = ( radius !== undefined ) ? radius : 1.0; // distance from the origin to a point in the x-z plane\n\t\tthis.theta = ( theta !== undefined ) ? theta : 0; // counterclockwise angle in the x-z plane measured in radians from the positive z-axis\n\t\tthis.y = ( y !== undefined ) ? y : 0; // height above the x-z plane\n\n\t\treturn this;\n\n\t}\n\n\tset( radius, theta, y ) {\n\n\t\tthis.radius = radius;\n\t\tthis.theta = theta;\n\t\tthis.y = y;\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( other ) {\n\n\t\tthis.radius = other.radius;\n\t\tthis.theta = other.theta;\n\t\tthis.y = other.y;\n\n\t\treturn this;\n\n\t}\n\n\tsetFromVector3( v ) {\n\n\t\treturn this.setFromCartesianCoords( v.x, v.y, v.z );\n\n\t}\n\n\tsetFromCartesianCoords( x, y, z ) {\n\n\t\tthis.radius = Math.sqrt( x * x + z * z );\n\t\tthis.theta = Math.atan2( x, z );\n\t\tthis.y = y;\n\n\t\treturn this;\n\n\t}\n\n}\n\nconst _vector$8 = /*@__PURE__*/ new Vector2();\n\nclass Box2 {\n\n\tconstructor( min, max ) {\n\n\t\tObject.defineProperty( this, 'isBox2', { value: true } );\n\n\t\tthis.min = ( min !== undefined ) ? min : new Vector2( + Infinity, + Infinity );\n\t\tthis.max = ( max !== undefined ) ? max : new Vector2( - Infinity, - Infinity );\n\n\t}\n\n\tset( min, max ) {\n\n\t\tthis.min.copy( min );\n\t\tthis.max.copy( max );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromPoints( points ) {\n\n\t\tthis.makeEmpty();\n\n\t\tfor ( let i = 0, il = points.length; i < il; i ++ ) {\n\n\t\t\tthis.expandByPoint( points[ i ] );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetFromCenterAndSize( center, size ) {\n\n\t\tconst halfSize = _vector$8.copy( size ).multiplyScalar( 0.5 );\n\t\tthis.min.copy( center ).sub( halfSize );\n\t\tthis.max.copy( center ).add( halfSize );\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( box ) {\n\n\t\tthis.min.copy( box.min );\n\t\tthis.max.copy( box.max );\n\n\t\treturn this;\n\n\t}\n\n\tmakeEmpty() {\n\n\t\tthis.min.x = this.min.y = + Infinity;\n\t\tthis.max.x = this.max.y = - Infinity;\n\n\t\treturn this;\n\n\t}\n\n\tisEmpty() {\n\n\t\t// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes\n\n\t\treturn ( this.max.x < this.min.x ) || ( this.max.y < this.min.y );\n\n\t}\n\n\tgetCenter( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Box2: .getCenter() target is now required' );\n\t\t\ttarget = new Vector2();\n\n\t\t}\n\n\t\treturn this.isEmpty() ? target.set( 0, 0 ) : target.addVectors( this.min, this.max ).multiplyScalar( 0.5 );\n\n\t}\n\n\tgetSize( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Box2: .getSize() target is now required' );\n\t\t\ttarget = new Vector2();\n\n\t\t}\n\n\t\treturn this.isEmpty() ? target.set( 0, 0 ) : target.subVectors( this.max, this.min );\n\n\t}\n\n\texpandByPoint( point ) {\n\n\t\tthis.min.min( point );\n\t\tthis.max.max( point );\n\n\t\treturn this;\n\n\t}\n\n\texpandByVector( vector ) {\n\n\t\tthis.min.sub( vector );\n\t\tthis.max.add( vector );\n\n\t\treturn this;\n\n\t}\n\n\texpandByScalar( scalar ) {\n\n\t\tthis.min.addScalar( - scalar );\n\t\tthis.max.addScalar( scalar );\n\n\t\treturn this;\n\n\t}\n\n\tcontainsPoint( point ) {\n\n\t\treturn point.x < this.min.x || point.x > this.max.x ||\n\t\t\tpoint.y < this.min.y || point.y > this.max.y ? false : true;\n\n\t}\n\n\tcontainsBox( box ) {\n\n\t\treturn this.min.x <= box.min.x && box.max.x <= this.max.x &&\n\t\t\tthis.min.y <= box.min.y && box.max.y <= this.max.y;\n\n\t}\n\n\tgetParameter( point, target ) {\n\n\t\t// This can potentially have a divide by zero if the box\n\t\t// has a size dimension of 0.\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Box2: .getParameter() target is now required' );\n\t\t\ttarget = new Vector2();\n\n\t\t}\n\n\t\treturn target.set(\n\t\t\t( point.x - this.min.x ) / ( this.max.x - this.min.x ),\n\t\t\t( point.y - this.min.y ) / ( this.max.y - this.min.y )\n\t\t);\n\n\t}\n\n\tintersectsBox( box ) {\n\n\t\t// using 4 splitting planes to rule out intersections\n\n\t\treturn box.max.x < this.min.x || box.min.x > this.max.x ||\n\t\t\tbox.max.y < this.min.y || box.min.y > this.max.y ? false : true;\n\n\t}\n\n\tclampPoint( point, target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Box2: .clampPoint() target is now required' );\n\t\t\ttarget = new Vector2();\n\n\t\t}\n\n\t\treturn target.copy( point ).clamp( this.min, this.max );\n\n\t}\n\n\tdistanceToPoint( point ) {\n\n\t\tconst clampedPoint = _vector$8.copy( point ).clamp( this.min, this.max );\n\t\treturn clampedPoint.sub( point ).length();\n\n\t}\n\n\tintersect( box ) {\n\n\t\tthis.min.max( box.min );\n\t\tthis.max.min( box.max );\n\n\t\treturn this;\n\n\t}\n\n\tunion( box ) {\n\n\t\tthis.min.min( box.min );\n\t\tthis.max.max( box.max );\n\n\t\treturn this;\n\n\t}\n\n\ttranslate( offset ) {\n\n\t\tthis.min.add( offset );\n\t\tthis.max.add( offset );\n\n\t\treturn this;\n\n\t}\n\n\tequals( box ) {\n\n\t\treturn box.min.equals( this.min ) && box.max.equals( this.max );\n\n\t}\n\n}\n\nconst _startP = /*@__PURE__*/ new Vector3();\nconst _startEnd = /*@__PURE__*/ new Vector3();\n\nclass Line3 {\n\n\tconstructor( start, end ) {\n\n\t\tthis.start = ( start !== undefined ) ? start : new Vector3();\n\t\tthis.end = ( end !== undefined ) ? end : new Vector3();\n\n\t}\n\n\tset( start, end ) {\n\n\t\tthis.start.copy( start );\n\t\tthis.end.copy( end );\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( line ) {\n\n\t\tthis.start.copy( line.start );\n\t\tthis.end.copy( line.end );\n\n\t\treturn this;\n\n\t}\n\n\tgetCenter( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Line3: .getCenter() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\treturn target.addVectors( this.start, this.end ).multiplyScalar( 0.5 );\n\n\t}\n\n\tdelta( target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Line3: .delta() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\treturn target.subVectors( this.end, this.start );\n\n\t}\n\n\tdistanceSq() {\n\n\t\treturn this.start.distanceToSquared( this.end );\n\n\t}\n\n\tdistance() {\n\n\t\treturn this.start.distanceTo( this.end );\n\n\t}\n\n\tat( t, target ) {\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Line3: .at() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\treturn this.delta( target ).multiplyScalar( t ).add( this.start );\n\n\t}\n\n\tclosestPointToPointParameter( point, clampToLine ) {\n\n\t\t_startP.subVectors( point, this.start );\n\t\t_startEnd.subVectors( this.end, this.start );\n\n\t\tconst startEnd2 = _startEnd.dot( _startEnd );\n\t\tconst startEnd_startP = _startEnd.dot( _startP );\n\n\t\tlet t = startEnd_startP / startEnd2;\n\n\t\tif ( clampToLine ) {\n\n\t\t\tt = MathUtils.clamp( t, 0, 1 );\n\n\t\t}\n\n\t\treturn t;\n\n\t}\n\n\tclosestPointToPoint( point, clampToLine, target ) {\n\n\t\tconst t = this.closestPointToPointParameter( point, clampToLine );\n\n\t\tif ( target === undefined ) {\n\n\t\t\tconsole.warn( 'THREE.Line3: .closestPointToPoint() target is now required' );\n\t\t\ttarget = new Vector3();\n\n\t\t}\n\n\t\treturn this.delta( target ).multiplyScalar( t ).add( this.start );\n\n\t}\n\n\tapplyMatrix4( matrix ) {\n\n\t\tthis.start.applyMatrix4( matrix );\n\t\tthis.end.applyMatrix4( matrix );\n\n\t\treturn this;\n\n\t}\n\n\tequals( line ) {\n\n\t\treturn line.start.equals( this.start ) && line.end.equals( this.end );\n\n\t}\n\n}\n\nfunction ImmediateRenderObject( material ) {\n\n\tObject3D.call( this );\n\n\tthis.material = material;\n\tthis.render = function ( /* renderCallback */ ) {};\n\n\tthis.hasPositions = false;\n\tthis.hasNormals = false;\n\tthis.hasColors = false;\n\tthis.hasUvs = false;\n\n\tthis.positionArray = null;\n\tthis.normalArray = null;\n\tthis.colorArray = null;\n\tthis.uvArray = null;\n\n\tthis.count = 0;\n\n}\n\nImmediateRenderObject.prototype = Object.create( Object3D.prototype );\nImmediateRenderObject.prototype.constructor = ImmediateRenderObject;\n\nImmediateRenderObject.prototype.isImmediateRenderObject = true;\n\nconst _vector$9 = /*@__PURE__*/ new Vector3();\n\nclass SpotLightHelper extends Object3D {\n\n\tconstructor( light, color ) {\n\n\t\tsuper();\n\t\tthis.light = light;\n\t\tthis.light.updateMatrixWorld();\n\n\t\tthis.matrix = light.matrixWorld;\n\t\tthis.matrixAutoUpdate = false;\n\n\t\tthis.color = color;\n\n\t\tconst geometry = new BufferGeometry();\n\n\t\tconst positions = [\n\t\t\t0, 0, 0, \t0, 0, 1,\n\t\t\t0, 0, 0, \t1, 0, 1,\n\t\t\t0, 0, 0,\t- 1, 0, 1,\n\t\t\t0, 0, 0, \t0, 1, 1,\n\t\t\t0, 0, 0, \t0, - 1, 1\n\t\t];\n\n\t\tfor ( let i = 0, j = 1, l = 32; i < l; i ++, j ++ ) {\n\n\t\t\tconst p1 = ( i / l ) * Math.PI * 2;\n\t\t\tconst p2 = ( j / l ) * Math.PI * 2;\n\n\t\t\tpositions.push(\n\t\t\t\tMath.cos( p1 ), Math.sin( p1 ), 1,\n\t\t\t\tMath.cos( p2 ), Math.sin( p2 ), 1\n\t\t\t);\n\n\t\t}\n\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );\n\n\t\tconst material = new LineBasicMaterial( { fog: false, toneMapped: false } );\n\n\t\tthis.cone = new LineSegments( geometry, material );\n\t\tthis.add( this.cone );\n\n\t\tthis.update();\n\n\t}\n\n\tdispose() {\n\n\t\tthis.cone.geometry.dispose();\n\t\tthis.cone.material.dispose();\n\n\t}\n\n\tupdate() {\n\n\t\tthis.light.updateMatrixWorld();\n\n\t\tconst coneLength = this.light.distance ? this.light.distance : 1000;\n\t\tconst coneWidth = coneLength * Math.tan( this.light.angle );\n\n\t\tthis.cone.scale.set( coneWidth, coneWidth, coneLength );\n\n\t\t_vector$9.setFromMatrixPosition( this.light.target.matrixWorld );\n\n\t\tthis.cone.lookAt( _vector$9 );\n\n\t\tif ( this.color !== undefined ) {\n\n\t\t\tthis.cone.material.color.set( this.color );\n\n\t\t} else {\n\n\t\t\tthis.cone.material.color.copy( this.light.color );\n\n\t\t}\n\n\t}\n\n}\n\nconst _vector$a = /*@__PURE__*/ new Vector3();\nconst _boneMatrix = /*@__PURE__*/ new Matrix4();\nconst _matrixWorldInv = /*@__PURE__*/ new Matrix4();\n\n\nclass SkeletonHelper extends LineSegments {\n\n\tconstructor( object ) {\n\n\t\tconst bones = getBoneList( object );\n\n\t\tconst geometry = new BufferGeometry();\n\n\t\tconst vertices = [];\n\t\tconst colors = [];\n\n\t\tconst color1 = new Color( 0, 0, 1 );\n\t\tconst color2 = new Color( 0, 1, 0 );\n\n\t\tfor ( let i = 0; i < bones.length; i ++ ) {\n\n\t\t\tconst bone = bones[ i ];\n\n\t\t\tif ( bone.parent && bone.parent.isBone ) {\n\n\t\t\t\tvertices.push( 0, 0, 0 );\n\t\t\t\tvertices.push( 0, 0, 0 );\n\t\t\t\tcolors.push( color1.r, color1.g, color1.b );\n\t\t\t\tcolors.push( color2.r, color2.g, color2.b );\n\n\t\t\t}\n\n\t\t}\n\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tgeometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );\n\n\t\tconst material = new LineBasicMaterial( { vertexColors: true, depthTest: false, depthWrite: false, toneMapped: false, transparent: true } );\n\n\t\tsuper( geometry, material );\n\n\t\tthis.type = 'SkeletonHelper';\n\t\tthis.isSkeletonHelper = true;\n\n\t\tthis.root = object;\n\t\tthis.bones = bones;\n\n\t\tthis.matrix = object.matrixWorld;\n\t\tthis.matrixAutoUpdate = false;\n\n\t}\n\n\tupdateMatrixWorld( force ) {\n\n\t\tconst bones = this.bones;\n\n\t\tconst geometry = this.geometry;\n\t\tconst position = geometry.getAttribute( 'position' );\n\n\t\t_matrixWorldInv.copy( this.root.matrixWorld ).invert();\n\n\t\tfor ( let i = 0, j = 0; i < bones.length; i ++ ) {\n\n\t\t\tconst bone = bones[ i ];\n\n\t\t\tif ( bone.parent && bone.parent.isBone ) {\n\n\t\t\t\t_boneMatrix.multiplyMatrices( _matrixWorldInv, bone.matrixWorld );\n\t\t\t\t_vector$a.setFromMatrixPosition( _boneMatrix );\n\t\t\t\tposition.setXYZ( j, _vector$a.x, _vector$a.y, _vector$a.z );\n\n\t\t\t\t_boneMatrix.multiplyMatrices( _matrixWorldInv, bone.parent.matrixWorld );\n\t\t\t\t_vector$a.setFromMatrixPosition( _boneMatrix );\n\t\t\t\tposition.setXYZ( j + 1, _vector$a.x, _vector$a.y, _vector$a.z );\n\n\t\t\t\tj += 2;\n\n\t\t\t}\n\n\t\t}\n\n\t\tgeometry.getAttribute( 'position' ).needsUpdate = true;\n\n\t\tsuper.updateMatrixWorld( force );\n\n\t}\n\n}\n\n\nfunction getBoneList( object ) {\n\n\tconst boneList = [];\n\n\tif ( object && object.isBone ) {\n\n\t\tboneList.push( object );\n\n\t}\n\n\tfor ( let i = 0; i < object.children.length; i ++ ) {\n\n\t\tboneList.push.apply( boneList, getBoneList( object.children[ i ] ) );\n\n\t}\n\n\treturn boneList;\n\n}\n\nclass PointLightHelper extends Mesh {\n\n\tconstructor( light, sphereSize, color ) {\n\n\t\tconst geometry = new SphereBufferGeometry( sphereSize, 4, 2 );\n\t\tconst material = new MeshBasicMaterial( { wireframe: true, fog: false, toneMapped: false } );\n\n\t\tsuper( geometry, material );\n\n\t\tthis.light = light;\n\t\tthis.light.updateMatrixWorld();\n\n\t\tthis.color = color;\n\n\t\tthis.type = 'PointLightHelper';\n\n\t\tthis.matrix = this.light.matrixWorld;\n\t\tthis.matrixAutoUpdate = false;\n\n\t\tthis.update();\n\n\n\t\t/*\n\t// TODO: delete this comment?\n\tconst distanceGeometry = new THREE.IcosahedronBufferGeometry( 1, 2 );\n\tconst distanceMaterial = new THREE.MeshBasicMaterial( { color: hexColor, fog: false, wireframe: true, opacity: 0.1, transparent: true } );\n\n\tthis.lightSphere = new THREE.Mesh( bulbGeometry, bulbMaterial );\n\tthis.lightDistance = new THREE.Mesh( distanceGeometry, distanceMaterial );\n\n\tconst d = light.distance;\n\n\tif ( d === 0.0 ) {\n\n\t\tthis.lightDistance.visible = false;\n\n\t} else {\n\n\t\tthis.lightDistance.scale.set( d, d, d );\n\n\t}\n\n\tthis.add( this.lightDistance );\n\t*/\n\n\t}\n\n\tdispose() {\n\n\t\tthis.geometry.dispose();\n\t\tthis.material.dispose();\n\n\t}\n\n\tupdate() {\n\n\t\tif ( this.color !== undefined ) {\n\n\t\t\tthis.material.color.set( this.color );\n\n\t\t} else {\n\n\t\t\tthis.material.color.copy( this.light.color );\n\n\t\t}\n\n\t\t/*\n\t\tconst d = this.light.distance;\n\n\t\tif ( d === 0.0 ) {\n\n\t\t\tthis.lightDistance.visible = false;\n\n\t\t} else {\n\n\t\t\tthis.lightDistance.visible = true;\n\t\t\tthis.lightDistance.scale.set( d, d, d );\n\n\t\t}\n\t\t*/\n\n\t}\n\n}\n\nconst _vector$b = /*@__PURE__*/ new Vector3();\nconst _color1 = /*@__PURE__*/ new Color();\nconst _color2 = /*@__PURE__*/ new Color();\n\nclass HemisphereLightHelper extends Object3D {\n\n\tconstructor( light, size, color ) {\n\n\t\tsuper();\n\t\tthis.light = light;\n\t\tthis.light.updateMatrixWorld();\n\n\t\tthis.matrix = light.matrixWorld;\n\t\tthis.matrixAutoUpdate = false;\n\n\t\tthis.color = color;\n\n\t\tconst geometry = new OctahedronBufferGeometry( size );\n\t\tgeometry.rotateY( Math.PI * 0.5 );\n\n\t\tthis.material = new MeshBasicMaterial( { wireframe: true, fog: false, toneMapped: false } );\n\t\tif ( this.color === undefined ) this.material.vertexColors = true;\n\n\t\tconst position = geometry.getAttribute( 'position' );\n\t\tconst colors = new Float32Array( position.count * 3 );\n\n\t\tgeometry.setAttribute( 'color', new BufferAttribute( colors, 3 ) );\n\n\t\tthis.add( new Mesh( geometry, this.material ) );\n\n\t\tthis.update();\n\n\t}\n\n\tdispose() {\n\n\t\tthis.children[ 0 ].geometry.dispose();\n\t\tthis.children[ 0 ].material.dispose();\n\n\t}\n\n\tupdate() {\n\n\t\tconst mesh = this.children[ 0 ];\n\n\t\tif ( this.color !== undefined ) {\n\n\t\t\tthis.material.color.set( this.color );\n\n\t\t} else {\n\n\t\t\tconst colors = mesh.geometry.getAttribute( 'color' );\n\n\t\t\t_color1.copy( this.light.color );\n\t\t\t_color2.copy( this.light.groundColor );\n\n\t\t\tfor ( let i = 0, l = colors.count; i < l; i ++ ) {\n\n\t\t\t\tconst color = ( i < ( l / 2 ) ) ? _color1 : _color2;\n\n\t\t\t\tcolors.setXYZ( i, color.r, color.g, color.b );\n\n\t\t\t}\n\n\t\t\tcolors.needsUpdate = true;\n\n\t\t}\n\n\t\tmesh.lookAt( _vector$b.setFromMatrixPosition( this.light.matrixWorld ).negate() );\n\n\t}\n\n}\n\nclass GridHelper extends LineSegments {\n\n\tconstructor( size = 10, divisions = 10, color1 = 0x444444, color2 = 0x888888 ) {\n\n\t\tcolor1 = new Color( color1 );\n\t\tcolor2 = new Color( color2 );\n\n\t\tconst center = divisions / 2;\n\t\tconst step = size / divisions;\n\t\tconst halfSize = size / 2;\n\n\t\tconst vertices = [], colors = [];\n\n\t\tfor ( let i = 0, j = 0, k = - halfSize; i <= divisions; i ++, k += step ) {\n\n\t\t\tvertices.push( - halfSize, 0, k, halfSize, 0, k );\n\t\t\tvertices.push( k, 0, - halfSize, k, 0, halfSize );\n\n\t\t\tconst color = i === center ? color1 : color2;\n\n\t\t\tcolor.toArray( colors, j ); j += 3;\n\t\t\tcolor.toArray( colors, j ); j += 3;\n\t\t\tcolor.toArray( colors, j ); j += 3;\n\t\t\tcolor.toArray( colors, j ); j += 3;\n\n\t\t}\n\n\t\tconst geometry = new BufferGeometry();\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tgeometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );\n\n\t\tconst material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );\n\n\t\tsuper( geometry, material );\n\n\t\tthis.type = 'GridHelper';\n\n\t}\n\n}\n\nclass PolarGridHelper extends LineSegments {\n\n\tconstructor( radius = 10, radials = 16, circles = 8, divisions = 64, color1 = 0x444444, color2 = 0x888888 ) {\n\n\t\tcolor1 = new Color( color1 );\n\t\tcolor2 = new Color( color2 );\n\n\t\tconst vertices = [];\n\t\tconst colors = [];\n\n\t\t// create the radials\n\n\t\tfor ( let i = 0; i <= radials; i ++ ) {\n\n\t\t\tconst v = ( i / radials ) * ( Math.PI * 2 );\n\n\t\t\tconst x = Math.sin( v ) * radius;\n\t\t\tconst z = Math.cos( v ) * radius;\n\n\t\t\tvertices.push( 0, 0, 0 );\n\t\t\tvertices.push( x, 0, z );\n\n\t\t\tconst color = ( i & 1 ) ? color1 : color2;\n\n\t\t\tcolors.push( color.r, color.g, color.b );\n\t\t\tcolors.push( color.r, color.g, color.b );\n\n\t\t}\n\n\t\t// create the circles\n\n\t\tfor ( let i = 0; i <= circles; i ++ ) {\n\n\t\t\tconst color = ( i & 1 ) ? color1 : color2;\n\n\t\t\tconst r = radius - ( radius / circles * i );\n\n\t\t\tfor ( let j = 0; j < divisions; j ++ ) {\n\n\t\t\t\t// first vertex\n\n\t\t\t\tlet v = ( j / divisions ) * ( Math.PI * 2 );\n\n\t\t\t\tlet x = Math.sin( v ) * r;\n\t\t\t\tlet z = Math.cos( v ) * r;\n\n\t\t\t\tvertices.push( x, 0, z );\n\t\t\t\tcolors.push( color.r, color.g, color.b );\n\n\t\t\t\t// second vertex\n\n\t\t\t\tv = ( ( j + 1 ) / divisions ) * ( Math.PI * 2 );\n\n\t\t\t\tx = Math.sin( v ) * r;\n\t\t\t\tz = Math.cos( v ) * r;\n\n\t\t\t\tvertices.push( x, 0, z );\n\t\t\t\tcolors.push( color.r, color.g, color.b );\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst geometry = new BufferGeometry();\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tgeometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );\n\n\t\tconst material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );\n\n\t\tsuper( geometry, material );\n\n\t\tthis.type = 'PolarGridHelper';\n\n\t}\n\n}\n\nconst _v1$6 = /*@__PURE__*/ new Vector3();\nconst _v2$3 = /*@__PURE__*/ new Vector3();\nconst _v3$1 = /*@__PURE__*/ new Vector3();\n\nclass DirectionalLightHelper extends Object3D {\n\n\tconstructor( light, size, color ) {\n\n\t\tsuper();\n\t\tthis.light = light;\n\t\tthis.light.updateMatrixWorld();\n\n\t\tthis.matrix = light.matrixWorld;\n\t\tthis.matrixAutoUpdate = false;\n\n\t\tthis.color = color;\n\n\t\tif ( size === undefined ) size = 1;\n\n\t\tlet geometry = new BufferGeometry();\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( [\n\t\t\t- size, size, 0,\n\t\t\tsize, size, 0,\n\t\t\tsize, - size, 0,\n\t\t\t- size, - size, 0,\n\t\t\t- size, size, 0\n\t\t], 3 ) );\n\n\t\tconst material = new LineBasicMaterial( { fog: false, toneMapped: false } );\n\n\t\tthis.lightPlane = new Line( geometry, material );\n\t\tthis.add( this.lightPlane );\n\n\t\tgeometry = new BufferGeometry();\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0, 0, 0, 1 ], 3 ) );\n\n\t\tthis.targetLine = new Line( geometry, material );\n\t\tthis.add( this.targetLine );\n\n\t\tthis.update();\n\n\t}\n\n\tdispose() {\n\n\t\tthis.lightPlane.geometry.dispose();\n\t\tthis.lightPlane.material.dispose();\n\t\tthis.targetLine.geometry.dispose();\n\t\tthis.targetLine.material.dispose();\n\n\t}\n\n\tupdate() {\n\n\t\t_v1$6.setFromMatrixPosition( this.light.matrixWorld );\n\t\t_v2$3.setFromMatrixPosition( this.light.target.matrixWorld );\n\t\t_v3$1.subVectors( _v2$3, _v1$6 );\n\n\t\tthis.lightPlane.lookAt( _v2$3 );\n\n\t\tif ( this.color !== undefined ) {\n\n\t\t\tthis.lightPlane.material.color.set( this.color );\n\t\t\tthis.targetLine.material.color.set( this.color );\n\n\t\t} else {\n\n\t\t\tthis.lightPlane.material.color.copy( this.light.color );\n\t\t\tthis.targetLine.material.color.copy( this.light.color );\n\n\t\t}\n\n\t\tthis.targetLine.lookAt( _v2$3 );\n\t\tthis.targetLine.scale.z = _v3$1.length();\n\n\t}\n\n}\n\nconst _vector$c = /*@__PURE__*/ new Vector3();\nconst _camera = /*@__PURE__*/ new Camera();\n\n/**\n *\t- shows frustum, line of sight and up of the camera\n *\t- suitable for fast updates\n * \t- based on frustum visualization in lightgl.js shadowmap example\n *\t\thttp://evanw.github.com/lightgl.js/tests/shadowmap.html\n */\n\nclass CameraHelper extends LineSegments {\n\n\tconstructor( camera ) {\n\n\t\tconst geometry = new BufferGeometry();\n\t\tconst material = new LineBasicMaterial( { color: 0xffffff, vertexColors: true, toneMapped: false } );\n\n\t\tconst vertices = [];\n\t\tconst colors = [];\n\n\t\tconst pointMap = {};\n\n\t\t// colors\n\n\t\tconst colorFrustum = new Color( 0xffaa00 );\n\t\tconst colorCone = new Color( 0xff0000 );\n\t\tconst colorUp = new Color( 0x00aaff );\n\t\tconst colorTarget = new Color( 0xffffff );\n\t\tconst colorCross = new Color( 0x333333 );\n\n\t\t// near\n\n\t\taddLine( 'n1', 'n2', colorFrustum );\n\t\taddLine( 'n2', 'n4', colorFrustum );\n\t\taddLine( 'n4', 'n3', colorFrustum );\n\t\taddLine( 'n3', 'n1', colorFrustum );\n\n\t\t// far\n\n\t\taddLine( 'f1', 'f2', colorFrustum );\n\t\taddLine( 'f2', 'f4', colorFrustum );\n\t\taddLine( 'f4', 'f3', colorFrustum );\n\t\taddLine( 'f3', 'f1', colorFrustum );\n\n\t\t// sides\n\n\t\taddLine( 'n1', 'f1', colorFrustum );\n\t\taddLine( 'n2', 'f2', colorFrustum );\n\t\taddLine( 'n3', 'f3', colorFrustum );\n\t\taddLine( 'n4', 'f4', colorFrustum );\n\n\t\t// cone\n\n\t\taddLine( 'p', 'n1', colorCone );\n\t\taddLine( 'p', 'n2', colorCone );\n\t\taddLine( 'p', 'n3', colorCone );\n\t\taddLine( 'p', 'n4', colorCone );\n\n\t\t// up\n\n\t\taddLine( 'u1', 'u2', colorUp );\n\t\taddLine( 'u2', 'u3', colorUp );\n\t\taddLine( 'u3', 'u1', colorUp );\n\n\t\t// target\n\n\t\taddLine( 'c', 't', colorTarget );\n\t\taddLine( 'p', 'c', colorCross );\n\n\t\t// cross\n\n\t\taddLine( 'cn1', 'cn2', colorCross );\n\t\taddLine( 'cn3', 'cn4', colorCross );\n\n\t\taddLine( 'cf1', 'cf2', colorCross );\n\t\taddLine( 'cf3', 'cf4', colorCross );\n\n\t\tfunction addLine( a, b, color ) {\n\n\t\t\taddPoint( a, color );\n\t\t\taddPoint( b, color );\n\n\t\t}\n\n\t\tfunction addPoint( id, color ) {\n\n\t\t\tvertices.push( 0, 0, 0 );\n\t\t\tcolors.push( color.r, color.g, color.b );\n\n\t\t\tif ( pointMap[ id ] === undefined ) {\n\n\t\t\t\tpointMap[ id ] = [];\n\n\t\t\t}\n\n\t\t\tpointMap[ id ].push( ( vertices.length / 3 ) - 1 );\n\n\t\t}\n\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tgeometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );\n\n\t\tsuper( geometry, material );\n\n\t\tthis.type = 'CameraHelper';\n\n\t\tthis.camera = camera;\n\t\tif ( this.camera.updateProjectionMatrix ) this.camera.updateProjectionMatrix();\n\n\t\tthis.matrix = camera.matrixWorld;\n\t\tthis.matrixAutoUpdate = false;\n\n\t\tthis.pointMap = pointMap;\n\n\t\tthis.update();\n\n\t}\n\n\tupdate() {\n\n\t\tconst geometry = this.geometry;\n\t\tconst pointMap = this.pointMap;\n\n\t\tconst w = 1, h = 1;\n\n\t\t// we need just camera projection matrix inverse\n\t\t// world matrix must be identity\n\n\t\t_camera.projectionMatrixInverse.copy( this.camera.projectionMatrixInverse );\n\n\t\t// center / target\n\n\t\tsetPoint( 'c', pointMap, geometry, _camera, 0, 0, - 1 );\n\t\tsetPoint( 't', pointMap, geometry, _camera, 0, 0, 1 );\n\n\t\t// near\n\n\t\tsetPoint( 'n1', pointMap, geometry, _camera, - w, - h, - 1 );\n\t\tsetPoint( 'n2', pointMap, geometry, _camera, w, - h, - 1 );\n\t\tsetPoint( 'n3', pointMap, geometry, _camera, - w, h, - 1 );\n\t\tsetPoint( 'n4', pointMap, geometry, _camera, w, h, - 1 );\n\n\t\t// far\n\n\t\tsetPoint( 'f1', pointMap, geometry, _camera, - w, - h, 1 );\n\t\tsetPoint( 'f2', pointMap, geometry, _camera, w, - h, 1 );\n\t\tsetPoint( 'f3', pointMap, geometry, _camera, - w, h, 1 );\n\t\tsetPoint( 'f4', pointMap, geometry, _camera, w, h, 1 );\n\n\t\t// up\n\n\t\tsetPoint( 'u1', pointMap, geometry, _camera, w * 0.7, h * 1.1, - 1 );\n\t\tsetPoint( 'u2', pointMap, geometry, _camera, - w * 0.7, h * 1.1, - 1 );\n\t\tsetPoint( 'u3', pointMap, geometry, _camera, 0, h * 2, - 1 );\n\n\t\t// cross\n\n\t\tsetPoint( 'cf1', pointMap, geometry, _camera, - w, 0, 1 );\n\t\tsetPoint( 'cf2', pointMap, geometry, _camera, w, 0, 1 );\n\t\tsetPoint( 'cf3', pointMap, geometry, _camera, 0, - h, 1 );\n\t\tsetPoint( 'cf4', pointMap, geometry, _camera, 0, h, 1 );\n\n\t\tsetPoint( 'cn1', pointMap, geometry, _camera, - w, 0, - 1 );\n\t\tsetPoint( 'cn2', pointMap, geometry, _camera, w, 0, - 1 );\n\t\tsetPoint( 'cn3', pointMap, geometry, _camera, 0, - h, - 1 );\n\t\tsetPoint( 'cn4', pointMap, geometry, _camera, 0, h, - 1 );\n\n\t\tgeometry.getAttribute( 'position' ).needsUpdate = true;\n\n\t}\n\n}\n\n\nfunction setPoint( point, pointMap, geometry, camera, x, y, z ) {\n\n\t_vector$c.set( x, y, z ).unproject( camera );\n\n\tconst points = pointMap[ point ];\n\n\tif ( points !== undefined ) {\n\n\t\tconst position = geometry.getAttribute( 'position' );\n\n\t\tfor ( let i = 0, l = points.length; i < l; i ++ ) {\n\n\t\t\tposition.setXYZ( points[ i ], _vector$c.x, _vector$c.y, _vector$c.z );\n\n\t\t}\n\n\t}\n\n}\n\nconst _box$3 = /*@__PURE__*/ new Box3();\n\nclass BoxHelper extends LineSegments {\n\n\tconstructor( object, color = 0xffff00 ) {\n\n\t\tconst indices = new Uint16Array( [ 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 ] );\n\t\tconst positions = new Float32Array( 8 * 3 );\n\n\t\tconst geometry = new BufferGeometry();\n\t\tgeometry.setIndex( new BufferAttribute( indices, 1 ) );\n\t\tgeometry.setAttribute( 'position', new BufferAttribute( positions, 3 ) );\n\n\t\tsuper( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );\n\n\t\tthis.object = object;\n\t\tthis.type = 'BoxHelper';\n\n\t\tthis.matrixAutoUpdate = false;\n\n\t\tthis.update();\n\n\t}\n\n\tupdate( object ) {\n\n\t\tif ( object !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.BoxHelper: .update() has no longer arguments.' );\n\n\t\t}\n\n\t\tif ( this.object !== undefined ) {\n\n\t\t\t_box$3.setFromObject( this.object );\n\n\t\t}\n\n\t\tif ( _box$3.isEmpty() ) return;\n\n\t\tconst min = _box$3.min;\n\t\tconst max = _box$3.max;\n\n\t\t/*\n\t\t\t5____4\n\t\t1/___0/|\n\t\t| 6__|_7\n\t\t2/___3/\n\n\t\t0: max.x, max.y, max.z\n\t\t1: min.x, max.y, max.z\n\t\t2: min.x, min.y, max.z\n\t\t3: max.x, min.y, max.z\n\t\t4: max.x, max.y, min.z\n\t\t5: min.x, max.y, min.z\n\t\t6: min.x, min.y, min.z\n\t\t7: max.x, min.y, min.z\n\t\t*/\n\n\t\tconst position = this.geometry.attributes.position;\n\t\tconst array = position.array;\n\n\t\tarray[ 0 ] = max.x; array[ 1 ] = max.y; array[ 2 ] = max.z;\n\t\tarray[ 3 ] = min.x; array[ 4 ] = max.y; array[ 5 ] = max.z;\n\t\tarray[ 6 ] = min.x; array[ 7 ] = min.y; array[ 8 ] = max.z;\n\t\tarray[ 9 ] = max.x; array[ 10 ] = min.y; array[ 11 ] = max.z;\n\t\tarray[ 12 ] = max.x; array[ 13 ] = max.y; array[ 14 ] = min.z;\n\t\tarray[ 15 ] = min.x; array[ 16 ] = max.y; array[ 17 ] = min.z;\n\t\tarray[ 18 ] = min.x; array[ 19 ] = min.y; array[ 20 ] = min.z;\n\t\tarray[ 21 ] = max.x; array[ 22 ] = min.y; array[ 23 ] = min.z;\n\n\t\tposition.needsUpdate = true;\n\n\t\tthis.geometry.computeBoundingSphere();\n\n\n\t}\n\n\tsetFromObject( object ) {\n\n\t\tthis.object = object;\n\t\tthis.update();\n\n\t\treturn this;\n\n\t}\n\n\tcopy( source ) {\n\n\t\tLineSegments.prototype.copy.call( this, source );\n\n\t\tthis.object = source.object;\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass Box3Helper extends LineSegments {\n\n\tconstructor( box, color = 0xffff00 ) {\n\n\t\tconst indices = new Uint16Array( [ 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 ] );\n\n\t\tconst positions = [ 1, 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, - 1, 1, 1, 1, - 1, - 1, 1, - 1, - 1, - 1, - 1, 1, - 1, - 1 ];\n\n\t\tconst geometry = new BufferGeometry();\n\n\t\tgeometry.setIndex( new BufferAttribute( indices, 1 ) );\n\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );\n\n\t\tsuper( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );\n\n\t\tthis.box = box;\n\n\t\tthis.type = 'Box3Helper';\n\n\t\tthis.geometry.computeBoundingSphere();\n\n\t}\n\n\tupdateMatrixWorld( force ) {\n\n\t\tconst box = this.box;\n\n\t\tif ( box.isEmpty() ) return;\n\n\t\tbox.getCenter( this.position );\n\n\t\tbox.getSize( this.scale );\n\n\t\tthis.scale.multiplyScalar( 0.5 );\n\n\t\tsuper.updateMatrixWorld( force );\n\n\t}\n\n}\n\nclass PlaneHelper extends Line {\n\n\tconstructor( plane, size = 1, hex = 0xffff00 ) {\n\n\t\tconst color = hex;\n\n\t\tconst positions = [ 1, - 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, - 1, 1, 1, 1, 1, 0, 0, 1, 0, 0, 0 ];\n\n\t\tconst geometry = new BufferGeometry();\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );\n\t\tgeometry.computeBoundingSphere();\n\n\t\tsuper( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );\n\n\t\tthis.type = 'PlaneHelper';\n\n\t\tthis.plane = plane;\n\n\t\tthis.size = size;\n\n\t\tconst positions2 = [ 1, 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, 1, 1, - 1, - 1, 1, 1, - 1, 1 ];\n\n\t\tconst geometry2 = new BufferGeometry();\n\t\tgeometry2.setAttribute( 'position', new Float32BufferAttribute( positions2, 3 ) );\n\t\tgeometry2.computeBoundingSphere();\n\n\t\tthis.add( new Mesh( geometry2, new MeshBasicMaterial( { color: color, opacity: 0.2, transparent: true, depthWrite: false, toneMapped: false } ) ) );\n\n\t}\n\n\tupdateMatrixWorld( force ) {\n\n\t\tlet scale = - this.plane.constant;\n\n\t\tif ( Math.abs( scale ) < 1e-8 ) scale = 1e-8; // sign does not matter\n\n\t\tthis.scale.set( 0.5 * this.size, 0.5 * this.size, scale );\n\n\t\tthis.children[ 0 ].material.side = ( scale < 0 ) ? BackSide : FrontSide; // renderer flips side when determinant < 0; flipping not wanted here\n\n\t\tthis.lookAt( this.plane.normal );\n\n\t\tsuper.updateMatrixWorld( force );\n\n\t}\n\n}\n\nconst _axis = /*@__PURE__*/ new Vector3();\nlet _lineGeometry, _coneGeometry;\n\nclass ArrowHelper extends Object3D {\n\n\tconstructor( dir, origin, length, color, headLength, headWidth ) {\n\n\t\tsuper();\n\t\t// dir is assumed to be normalized\n\n\t\tthis.type = 'ArrowHelper';\n\n\t\tif ( dir === undefined ) dir = new Vector3( 0, 0, 1 );\n\t\tif ( origin === undefined ) origin = new Vector3( 0, 0, 0 );\n\t\tif ( length === undefined ) length = 1;\n\t\tif ( color === undefined ) color = 0xffff00;\n\t\tif ( headLength === undefined ) headLength = 0.2 * length;\n\t\tif ( headWidth === undefined ) headWidth = 0.2 * headLength;\n\n\t\tif ( _lineGeometry === undefined ) {\n\n\t\t\t_lineGeometry = new BufferGeometry();\n\t\t\t_lineGeometry.setAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0, 0, 1, 0 ], 3 ) );\n\n\t\t\t_coneGeometry = new CylinderBufferGeometry( 0, 0.5, 1, 5, 1 );\n\t\t\t_coneGeometry.translate( 0, - 0.5, 0 );\n\n\t\t}\n\n\t\tthis.position.copy( origin );\n\n\t\tthis.line = new Line( _lineGeometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );\n\t\tthis.line.matrixAutoUpdate = false;\n\t\tthis.add( this.line );\n\n\t\tthis.cone = new Mesh( _coneGeometry, new MeshBasicMaterial( { color: color, toneMapped: false } ) );\n\t\tthis.cone.matrixAutoUpdate = false;\n\t\tthis.add( this.cone );\n\n\t\tthis.setDirection( dir );\n\t\tthis.setLength( length, headLength, headWidth );\n\n\t}\n\n\tsetDirection( dir ) {\n\n\t\t// dir is assumed to be normalized\n\n\t\tif ( dir.y > 0.99999 ) {\n\n\t\t\tthis.quaternion.set( 0, 0, 0, 1 );\n\n\t\t} else if ( dir.y < - 0.99999 ) {\n\n\t\t\tthis.quaternion.set( 1, 0, 0, 0 );\n\n\t\t} else {\n\n\t\t\t_axis.set( dir.z, 0, - dir.x ).normalize();\n\n\t\t\tconst radians = Math.acos( dir.y );\n\n\t\t\tthis.quaternion.setFromAxisAngle( _axis, radians );\n\n\t\t}\n\n\t}\n\n\tsetLength( length, headLength, headWidth ) {\n\n\t\tif ( headLength === undefined ) headLength = 0.2 * length;\n\t\tif ( headWidth === undefined ) headWidth = 0.2 * headLength;\n\n\t\tthis.line.scale.set( 1, Math.max( 0.0001, length - headLength ), 1 ); // see #17458\n\t\tthis.line.updateMatrix();\n\n\t\tthis.cone.scale.set( headWidth, headLength, headWidth );\n\t\tthis.cone.position.y = length;\n\t\tthis.cone.updateMatrix();\n\n\t}\n\n\tsetColor( color ) {\n\n\t\tthis.line.material.color.set( color );\n\t\tthis.cone.material.color.set( color );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source, false );\n\n\t\tthis.line.copy( source.line );\n\t\tthis.cone.copy( source.cone );\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass AxesHelper extends LineSegments {\n\n\tconstructor( size = 1 ) {\n\n\t\tconst vertices = [\n\t\t\t0, 0, 0,\tsize, 0, 0,\n\t\t\t0, 0, 0,\t0, size, 0,\n\t\t\t0, 0, 0,\t0, 0, size\n\t\t];\n\n\t\tconst colors = [\n\t\t\t1, 0, 0,\t1, 0.6, 0,\n\t\t\t0, 1, 0,\t0.6, 1, 0,\n\t\t\t0, 0, 1,\t0, 0.6, 1\n\t\t];\n\n\t\tconst geometry = new BufferGeometry();\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tgeometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );\n\n\t\tconst material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );\n\n\t\tsuper( geometry, material );\n\n\t\tthis.type = 'AxesHelper';\n\n\t}\n\n}\n\nconst _floatView = new Float32Array( 1 );\nconst _int32View = new Int32Array( _floatView.buffer );\n\nconst DataUtils = {\n\n\t// Converts float32 to float16 (stored as uint16 value).\n\n\ttoHalfFloat: function ( val ) {\n\n\t\t// Source: http://gamedev.stackexchange.com/questions/17326/conversion-of-a-number-from-single-precision-floating-point-representation-to-a/17410#17410\n\n\t\t/* This method is faster than the OpenEXR implementation (very often\n\t\t* used, eg. in Ogre), with the additional benefit of rounding, inspired\n\t\t* by James Tursa?s half-precision code. */\n\n\t\t_floatView[ 0 ] = val;\n\t\tconst x = _int32View[ 0 ];\n\n\t\tlet bits = ( x >> 16 ) & 0x8000; /* Get the sign */\n\t\tlet m = ( x >> 12 ) & 0x07ff; /* Keep one extra bit for rounding */\n\t\tconst e = ( x >> 23 ) & 0xff; /* Using int is faster here */\n\n\t\t/* If zero, or denormal, or exponent underflows too much for a denormal\n\t\t\t* half, return signed zero. */\n\t\tif ( e < 103 ) return bits;\n\n\t\t/* If NaN, return NaN. If Inf or exponent overflow, return Inf. */\n\t\tif ( e > 142 ) {\n\n\t\t\tbits |= 0x7c00;\n\t\t\t/* If exponent was 0xff and one mantissa bit was set, it means NaN,\n\t\t\t\t\t\t* not Inf, so make sure we set one mantissa bit too. */\n\t\t\tbits |= ( ( e == 255 ) ? 0 : 1 ) && ( x & 0x007fffff );\n\t\t\treturn bits;\n\n\t\t}\n\n\t\t/* If exponent underflows but not too much, return a denormal */\n\t\tif ( e < 113 ) {\n\n\t\t\tm |= 0x0800;\n\t\t\t/* Extra rounding may overflow and set mantissa to 0 and exponent\n\t\t\t\t* to 1, which is OK. */\n\t\t\tbits |= ( m >> ( 114 - e ) ) + ( ( m >> ( 113 - e ) ) & 1 );\n\t\t\treturn bits;\n\n\t\t}\n\n\t\tbits |= ( ( e - 112 ) << 10 ) | ( m >> 1 );\n\t\t/* Extra rounding. An overflow will set mantissa to 0 and increment\n\t\t\t* the exponent, which is OK. */\n\t\tbits += m & 1;\n\t\treturn bits;\n\n\t}\n\n};\n\nconst LOD_MIN = 4;\nconst LOD_MAX = 8;\nconst SIZE_MAX = Math.pow( 2, LOD_MAX );\n\n// The standard deviations (radians) associated with the extra mips. These are\n// chosen to approximate a Trowbridge-Reitz distribution function times the\n// geometric shadowing function. These sigma values squared must match the\n// variance #defines in cube_uv_reflection_fragment.glsl.js.\nconst EXTRA_LOD_SIGMA = [ 0.125, 0.215, 0.35, 0.446, 0.526, 0.582 ];\n\nconst TOTAL_LODS = LOD_MAX - LOD_MIN + 1 + EXTRA_LOD_SIGMA.length;\n\n// The maximum length of the blur for loop. Smaller sigmas will use fewer\n// samples and exit early, but not recompile the shader.\nconst MAX_SAMPLES = 20;\n\nconst ENCODINGS = {\n\t[ LinearEncoding ]: 0,\n\t[ sRGBEncoding ]: 1,\n\t[ RGBEEncoding ]: 2,\n\t[ RGBM7Encoding ]: 3,\n\t[ RGBM16Encoding ]: 4,\n\t[ RGBDEncoding ]: 5,\n\t[ GammaEncoding ]: 6\n};\n\nconst _flatCamera = /*@__PURE__*/ new OrthographicCamera();\nconst { _lodPlanes, _sizeLods, _sigmas } = /*@__PURE__*/ _createPlanes();\nconst _clearColor = /*@__PURE__*/ new Color();\nlet _oldTarget = null;\n\n// Golden Ratio\nconst PHI = ( 1 + Math.sqrt( 5 ) ) / 2;\nconst INV_PHI = 1 / PHI;\n\n// Vertices of a dodecahedron (except the opposites, which represent the\n// same axis), used as axis directions evenly spread on a sphere.\nconst _axisDirections = [\n\t/*@__PURE__*/ new Vector3( 1, 1, 1 ),\n\t/*@__PURE__*/ new Vector3( - 1, 1, 1 ),\n\t/*@__PURE__*/ new Vector3( 1, 1, - 1 ),\n\t/*@__PURE__*/ new Vector3( - 1, 1, - 1 ),\n\t/*@__PURE__*/ new Vector3( 0, PHI, INV_PHI ),\n\t/*@__PURE__*/ new Vector3( 0, PHI, - INV_PHI ),\n\t/*@__PURE__*/ new Vector3( INV_PHI, 0, PHI ),\n\t/*@__PURE__*/ new Vector3( - INV_PHI, 0, PHI ),\n\t/*@__PURE__*/ new Vector3( PHI, INV_PHI, 0 ),\n\t/*@__PURE__*/ new Vector3( - PHI, INV_PHI, 0 ) ];\n\n/**\n * This class generates a Prefiltered, Mipmapped Radiance Environment Map\n * (PMREM) from a cubeMap environment texture. This allows different levels of\n * blur to be quickly accessed based on material roughness. It is packed into a\n * special CubeUV format that allows us to perform custom interpolation so that\n * we can support nonlinear formats such as RGBE. Unlike a traditional mipmap\n * chain, it only goes down to the LOD_MIN level (above), and then creates extra\n * even more filtered 'mips' at the same LOD_MIN resolution, associated with\n * higher roughness levels. In this way we maintain resolution to smoothly\n * interpolate diffuse lighting while limiting sampling computation.\n */\n\nclass PMREMGenerator {\n\n\tconstructor( renderer ) {\n\n\t\tthis._renderer = renderer;\n\t\tthis._pingPongRenderTarget = null;\n\n\t\tthis._blurMaterial = _getBlurShader( MAX_SAMPLES );\n\t\tthis._equirectShader = null;\n\t\tthis._cubemapShader = null;\n\n\t\tthis._compileMaterial( this._blurMaterial );\n\n\t}\n\n\t/**\n\t * Generates a PMREM from a supplied Scene, which can be faster than using an\n\t * image if networking bandwidth is low. Optional sigma specifies a blur radius\n\t * in radians to be applied to the scene before PMREM generation. Optional near\n\t * and far planes ensure the scene is rendered in its entirety (the cubeCamera\n\t * is placed at the origin).\n\t */\n\tfromScene( scene, sigma = 0, near = 0.1, far = 100 ) {\n\n\t\t_oldTarget = this._renderer.getRenderTarget();\n\t\tconst cubeUVRenderTarget = this._allocateTargets();\n\n\t\tthis._sceneToCubeUV( scene, near, far, cubeUVRenderTarget );\n\t\tif ( sigma > 0 ) {\n\n\t\t\tthis._blur( cubeUVRenderTarget, 0, 0, sigma );\n\n\t\t}\n\n\t\tthis._applyPMREM( cubeUVRenderTarget );\n\t\tthis._cleanup( cubeUVRenderTarget );\n\n\t\treturn cubeUVRenderTarget;\n\n\t}\n\n\t/**\n\t * Generates a PMREM from an equirectangular texture, which can be either LDR\n\t * (RGBFormat) or HDR (RGBEFormat). The ideal input image size is 1k (1024 x 512),\n\t * as this matches best with the 256 x 256 cubemap output.\n\t */\n\tfromEquirectangular( equirectangular ) {\n\n\t\treturn this._fromTexture( equirectangular );\n\n\t}\n\n\t/**\n\t * Generates a PMREM from an cubemap texture, which can be either LDR\n\t * (RGBFormat) or HDR (RGBEFormat). The ideal input cube size is 256 x 256,\n\t * as this matches best with the 256 x 256 cubemap output.\n\t */\n\tfromCubemap( cubemap ) {\n\n\t\treturn this._fromTexture( cubemap );\n\n\t}\n\n\t/**\n\t * Pre-compiles the cubemap shader. You can get faster start-up by invoking this method during\n\t * your texture's network fetch for increased concurrency.\n\t */\n\tcompileCubemapShader() {\n\n\t\tif ( this._cubemapShader === null ) {\n\n\t\t\tthis._cubemapShader = _getCubemapShader();\n\t\t\tthis._compileMaterial( this._cubemapShader );\n\n\t\t}\n\n\t}\n\n\t/**\n\t * Pre-compiles the equirectangular shader. You can get faster start-up by invoking this method during\n\t * your texture's network fetch for increased concurrency.\n\t */\n\tcompileEquirectangularShader() {\n\n\t\tif ( this._equirectShader === null ) {\n\n\t\t\tthis._equirectShader = _getEquirectShader();\n\t\t\tthis._compileMaterial( this._equirectShader );\n\n\t\t}\n\n\t}\n\n\t/**\n\t * Disposes of the PMREMGenerator's internal memory. Note that PMREMGenerator is a static class,\n\t * so you should not need more than one PMREMGenerator object. If you do, calling dispose() on\n\t * one of them will cause any others to also become unusable.\n\t */\n\tdispose() {\n\n\t\tthis._blurMaterial.dispose();\n\n\t\tif ( this._cubemapShader !== null ) this._cubemapShader.dispose();\n\t\tif ( this._equirectShader !== null ) this._equirectShader.dispose();\n\n\t\tfor ( let i = 0; i < _lodPlanes.length; i ++ ) {\n\n\t\t\t_lodPlanes[ i ].dispose();\n\n\t\t}\n\n\t}\n\n\t// private interface\n\n\t_cleanup( outputTarget ) {\n\n\t\tthis._pingPongRenderTarget.dispose();\n\t\tthis._renderer.setRenderTarget( _oldTarget );\n\t\toutputTarget.scissorTest = false;\n\t\t_setViewport( outputTarget, 0, 0, outputTarget.width, outputTarget.height );\n\n\t}\n\n\t_fromTexture( texture ) {\n\n\t\t_oldTarget = this._renderer.getRenderTarget();\n\t\tconst cubeUVRenderTarget = this._allocateTargets( texture );\n\t\tthis._textureToCubeUV( texture, cubeUVRenderTarget );\n\t\tthis._applyPMREM( cubeUVRenderTarget );\n\t\tthis._cleanup( cubeUVRenderTarget );\n\n\t\treturn cubeUVRenderTarget;\n\n\t}\n\n\t_allocateTargets( texture ) { // warning: null texture is valid\n\n\t\tconst params = {\n\t\t\tmagFilter: NearestFilter,\n\t\t\tminFilter: NearestFilter,\n\t\t\tgenerateMipmaps: false,\n\t\t\ttype: UnsignedByteType,\n\t\t\tformat: RGBEFormat,\n\t\t\tencoding: _isLDR( texture ) ? texture.encoding : RGBEEncoding,\n\t\t\tdepthBuffer: false\n\t\t};\n\n\t\tconst cubeUVRenderTarget = _createRenderTarget( params );\n\t\tcubeUVRenderTarget.depthBuffer = texture ? false : true;\n\t\tthis._pingPongRenderTarget = _createRenderTarget( params );\n\t\treturn cubeUVRenderTarget;\n\n\t}\n\n\t_compileMaterial( material ) {\n\n\t\tconst tmpMesh = new Mesh( _lodPlanes[ 0 ], material );\n\t\tthis._renderer.compile( tmpMesh, _flatCamera );\n\n\t}\n\n\t_sceneToCubeUV( scene, near, far, cubeUVRenderTarget ) {\n\n\t\tconst fov = 90;\n\t\tconst aspect = 1;\n\t\tconst cubeCamera = new PerspectiveCamera( fov, aspect, near, far );\n\t\tconst upSign = [ 1, - 1, 1, 1, 1, 1 ];\n\t\tconst forwardSign = [ 1, 1, 1, - 1, - 1, - 1 ];\n\t\tconst renderer = this._renderer;\n\n\t\tconst outputEncoding = renderer.outputEncoding;\n\t\tconst toneMapping = renderer.toneMapping;\n\t\trenderer.getClearColor( _clearColor );\n\t\tconst clearAlpha = renderer.getClearAlpha();\n\n\t\trenderer.toneMapping = NoToneMapping;\n\t\trenderer.outputEncoding = LinearEncoding;\n\n\t\tlet background = scene.background;\n\t\tif ( background && background.isColor ) {\n\n\t\t\tbackground.convertSRGBToLinear();\n\t\t\t// Convert linear to RGBE\n\t\t\tconst maxComponent = Math.max( background.r, background.g, background.b );\n\t\t\tconst fExp = Math.min( Math.max( Math.ceil( Math.log2( maxComponent ) ), - 128.0 ), 127.0 );\n\t\t\tbackground = background.multiplyScalar( Math.pow( 2.0, - fExp ) );\n\t\t\tconst alpha = ( fExp + 128.0 ) / 255.0;\n\t\t\trenderer.setClearColor( background, alpha );\n\t\t\tscene.background = null;\n\n\t\t}\n\n\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\tconst col = i % 3;\n\t\t\tif ( col == 0 ) {\n\n\t\t\t\tcubeCamera.up.set( 0, upSign[ i ], 0 );\n\t\t\t\tcubeCamera.lookAt( forwardSign[ i ], 0, 0 );\n\n\t\t\t} else if ( col == 1 ) {\n\n\t\t\t\tcubeCamera.up.set( 0, 0, upSign[ i ] );\n\t\t\t\tcubeCamera.lookAt( 0, forwardSign[ i ], 0 );\n\n\t\t\t} else {\n\n\t\t\t\tcubeCamera.up.set( 0, upSign[ i ], 0 );\n\t\t\t\tcubeCamera.lookAt( 0, 0, forwardSign[ i ] );\n\n\t\t\t}\n\n\t\t\t_setViewport( cubeUVRenderTarget,\n\t\t\t\tcol * SIZE_MAX, i > 2 ? SIZE_MAX : 0, SIZE_MAX, SIZE_MAX );\n\t\t\trenderer.setRenderTarget( cubeUVRenderTarget );\n\t\t\trenderer.render( scene, cubeCamera );\n\n\t\t}\n\n\t\trenderer.toneMapping = toneMapping;\n\t\trenderer.outputEncoding = outputEncoding;\n\t\trenderer.setClearColor( _clearColor, clearAlpha );\n\n\t}\n\n\t_textureToCubeUV( texture, cubeUVRenderTarget ) {\n\n\t\tconst renderer = this._renderer;\n\n\t\tif ( texture.isCubeTexture ) {\n\n\t\t\tif ( this._cubemapShader == null ) {\n\n\t\t\t\tthis._cubemapShader = _getCubemapShader();\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tif ( this._equirectShader == null ) {\n\n\t\t\t\tthis._equirectShader = _getEquirectShader();\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst material = texture.isCubeTexture ? this._cubemapShader : this._equirectShader;\n\t\tconst mesh = new Mesh( _lodPlanes[ 0 ], material );\n\n\t\tconst uniforms = material.uniforms;\n\n\t\tuniforms[ 'envMap' ].value = texture;\n\n\t\tif ( ! texture.isCubeTexture ) {\n\n\t\t\tuniforms[ 'texelSize' ].value.set( 1.0 / texture.image.width, 1.0 / texture.image.height );\n\n\t\t}\n\n\t\tuniforms[ 'inputEncoding' ].value = ENCODINGS[ texture.encoding ];\n\t\tuniforms[ 'outputEncoding' ].value = ENCODINGS[ cubeUVRenderTarget.texture.encoding ];\n\n\t\t_setViewport( cubeUVRenderTarget, 0, 0, 3 * SIZE_MAX, 2 * SIZE_MAX );\n\n\t\trenderer.setRenderTarget( cubeUVRenderTarget );\n\t\trenderer.render( mesh, _flatCamera );\n\n\t}\n\n\t_applyPMREM( cubeUVRenderTarget ) {\n\n\t\tconst renderer = this._renderer;\n\t\tconst autoClear = renderer.autoClear;\n\t\trenderer.autoClear = false;\n\n\t\tfor ( let i = 1; i < TOTAL_LODS; i ++ ) {\n\n\t\t\tconst sigma = Math.sqrt( _sigmas[ i ] * _sigmas[ i ] - _sigmas[ i - 1 ] * _sigmas[ i - 1 ] );\n\n\t\t\tconst poleAxis = _axisDirections[ ( i - 1 ) % _axisDirections.length ];\n\n\t\t\tthis._blur( cubeUVRenderTarget, i - 1, i, sigma, poleAxis );\n\n\t\t}\n\n\t\trenderer.autoClear = autoClear;\n\n\t}\n\n\t/**\n\t * This is a two-pass Gaussian blur for a cubemap. Normally this is done\n\t * vertically and horizontally, but this breaks down on a cube. Here we apply\n\t * the blur latitudinally (around the poles), and then longitudinally (towards\n\t * the poles) to approximate the orthogonally-separable blur. It is least\n\t * accurate at the poles, but still does a decent job.\n\t */\n\t_blur( cubeUVRenderTarget, lodIn, lodOut, sigma, poleAxis ) {\n\n\t\tconst pingPongRenderTarget = this._pingPongRenderTarget;\n\n\t\tthis._halfBlur(\n\t\t\tcubeUVRenderTarget,\n\t\t\tpingPongRenderTarget,\n\t\t\tlodIn,\n\t\t\tlodOut,\n\t\t\tsigma,\n\t\t\t'latitudinal',\n\t\t\tpoleAxis );\n\n\t\tthis._halfBlur(\n\t\t\tpingPongRenderTarget,\n\t\t\tcubeUVRenderTarget,\n\t\t\tlodOut,\n\t\t\tlodOut,\n\t\t\tsigma,\n\t\t\t'longitudinal',\n\t\t\tpoleAxis );\n\n\t}\n\n\t_halfBlur( targetIn, targetOut, lodIn, lodOut, sigmaRadians, direction, poleAxis ) {\n\n\t\tconst renderer = this._renderer;\n\t\tconst blurMaterial = this._blurMaterial;\n\n\t\tif ( direction !== 'latitudinal' && direction !== 'longitudinal' ) {\n\n\t\t\tconsole.error(\n\t\t\t\t'blur direction must be either latitudinal or longitudinal!' );\n\n\t\t}\n\n\t\t// Number of standard deviations at which to cut off the discrete approximation.\n\t\tconst STANDARD_DEVIATIONS = 3;\n\n\t\tconst blurMesh = new Mesh( _lodPlanes[ lodOut ], blurMaterial );\n\t\tconst blurUniforms = blurMaterial.uniforms;\n\n\t\tconst pixels = _sizeLods[ lodIn ] - 1;\n\t\tconst radiansPerPixel = isFinite( sigmaRadians ) ? Math.PI / ( 2 * pixels ) : 2 * Math.PI / ( 2 * MAX_SAMPLES - 1 );\n\t\tconst sigmaPixels = sigmaRadians / radiansPerPixel;\n\t\tconst samples = isFinite( sigmaRadians ) ? 1 + Math.floor( STANDARD_DEVIATIONS * sigmaPixels ) : MAX_SAMPLES;\n\n\t\tif ( samples > MAX_SAMPLES ) {\n\n\t\t\tconsole.warn( `sigmaRadians, ${\n\t\t\t\tsigmaRadians}, is too large and will clip, as it requested ${\n\t\t\t\tsamples} samples when the maximum is set to ${MAX_SAMPLES}` );\n\n\t\t}\n\n\t\tconst weights = [];\n\t\tlet sum = 0;\n\n\t\tfor ( let i = 0; i < MAX_SAMPLES; ++ i ) {\n\n\t\t\tconst x = i / sigmaPixels;\n\t\t\tconst weight = Math.exp( - x * x / 2 );\n\t\t\tweights.push( weight );\n\n\t\t\tif ( i == 0 ) {\n\n\t\t\t\tsum += weight;\n\n\t\t\t} else if ( i < samples ) {\n\n\t\t\t\tsum += 2 * weight;\n\n\t\t\t}\n\n\t\t}\n\n\t\tfor ( let i = 0; i < weights.length; i ++ ) {\n\n\t\t\tweights[ i ] = weights[ i ] / sum;\n\n\t\t}\n\n\t\tblurUniforms[ 'envMap' ].value = targetIn.texture;\n\t\tblurUniforms[ 'samples' ].value = samples;\n\t\tblurUniforms[ 'weights' ].value = weights;\n\t\tblurUniforms[ 'latitudinal' ].value = direction === 'latitudinal';\n\n\t\tif ( poleAxis ) {\n\n\t\t\tblurUniforms[ 'poleAxis' ].value = poleAxis;\n\n\t\t}\n\n\t\tblurUniforms[ 'dTheta' ].value = radiansPerPixel;\n\t\tblurUniforms[ 'mipInt' ].value = LOD_MAX - lodIn;\n\t\tblurUniforms[ 'inputEncoding' ].value = ENCODINGS[ targetIn.texture.encoding ];\n\t\tblurUniforms[ 'outputEncoding' ].value = ENCODINGS[ targetIn.texture.encoding ];\n\n\t\tconst outputSize = _sizeLods[ lodOut ];\n\t\tconst x = 3 * Math.max( 0, SIZE_MAX - 2 * outputSize );\n\t\tconst y = ( lodOut === 0 ? 0 : 2 * SIZE_MAX ) + 2 * outputSize * ( lodOut > LOD_MAX - LOD_MIN ? lodOut - LOD_MAX + LOD_MIN : 0 );\n\n\t\t_setViewport( targetOut, x, y, 3 * outputSize, 2 * outputSize );\n\t\trenderer.setRenderTarget( targetOut );\n\t\trenderer.render( blurMesh, _flatCamera );\n\n\t}\n\n}\n\nfunction _isLDR( texture ) {\n\n\tif ( texture === undefined || texture.type !== UnsignedByteType ) return false;\n\n\treturn texture.encoding === LinearEncoding || texture.encoding === sRGBEncoding || texture.encoding === GammaEncoding;\n\n}\n\nfunction _createPlanes() {\n\n\tconst _lodPlanes = [];\n\tconst _sizeLods = [];\n\tconst _sigmas = [];\n\n\tlet lod = LOD_MAX;\n\n\tfor ( let i = 0; i < TOTAL_LODS; i ++ ) {\n\n\t\tconst sizeLod = Math.pow( 2, lod );\n\t\t_sizeLods.push( sizeLod );\n\t\tlet sigma = 1.0 / sizeLod;\n\n\t\tif ( i > LOD_MAX - LOD_MIN ) {\n\n\t\t\tsigma = EXTRA_LOD_SIGMA[ i - LOD_MAX + LOD_MIN - 1 ];\n\n\t\t} else if ( i == 0 ) {\n\n\t\t\tsigma = 0;\n\n\t\t}\n\n\t\t_sigmas.push( sigma );\n\n\t\tconst texelSize = 1.0 / ( sizeLod - 1 );\n\t\tconst min = - texelSize / 2;\n\t\tconst max = 1 + texelSize / 2;\n\t\tconst uv1 = [ min, min, max, min, max, max, min, min, max, max, min, max ];\n\n\t\tconst cubeFaces = 6;\n\t\tconst vertices = 6;\n\t\tconst positionSize = 3;\n\t\tconst uvSize = 2;\n\t\tconst faceIndexSize = 1;\n\n\t\tconst position = new Float32Array( positionSize * vertices * cubeFaces );\n\t\tconst uv = new Float32Array( uvSize * vertices * cubeFaces );\n\t\tconst faceIndex = new Float32Array( faceIndexSize * vertices * cubeFaces );\n\n\t\tfor ( let face = 0; face < cubeFaces; face ++ ) {\n\n\t\t\tconst x = ( face % 3 ) * 2 / 3 - 1;\n\t\t\tconst y = face > 2 ? 0 : - 1;\n\t\t\tconst coordinates = [\n\t\t\t\tx, y, 0,\n\t\t\t\tx + 2 / 3, y, 0,\n\t\t\t\tx + 2 / 3, y + 1, 0,\n\t\t\t\tx, y, 0,\n\t\t\t\tx + 2 / 3, y + 1, 0,\n\t\t\t\tx, y + 1, 0\n\t\t\t];\n\t\t\tposition.set( coordinates, positionSize * vertices * face );\n\t\t\tuv.set( uv1, uvSize * vertices * face );\n\t\t\tconst fill = [ face, face, face, face, face, face ];\n\t\t\tfaceIndex.set( fill, faceIndexSize * vertices * face );\n\n\t\t}\n\n\t\tconst planes = new BufferGeometry();\n\t\tplanes.setAttribute( 'position', new BufferAttribute( position, positionSize ) );\n\t\tplanes.setAttribute( 'uv', new BufferAttribute( uv, uvSize ) );\n\t\tplanes.setAttribute( 'faceIndex', new BufferAttribute( faceIndex, faceIndexSize ) );\n\t\t_lodPlanes.push( planes );\n\n\t\tif ( lod > LOD_MIN ) {\n\n\t\t\tlod --;\n\n\t\t}\n\n\t}\n\n\treturn { _lodPlanes, _sizeLods, _sigmas };\n\n}\n\nfunction _createRenderTarget( params ) {\n\n\tconst cubeUVRenderTarget = new WebGLRenderTarget( 3 * SIZE_MAX, 3 * SIZE_MAX, params );\n\tcubeUVRenderTarget.texture.mapping = CubeUVReflectionMapping;\n\tcubeUVRenderTarget.texture.name = 'PMREM.cubeUv';\n\tcubeUVRenderTarget.scissorTest = true;\n\treturn cubeUVRenderTarget;\n\n}\n\nfunction _setViewport( target, x, y, width, height ) {\n\n\ttarget.viewport.set( x, y, width, height );\n\ttarget.scissor.set( x, y, width, height );\n\n}\n\nfunction _getBlurShader( maxSamples ) {\n\n\tconst weights = new Float32Array( maxSamples );\n\tconst poleAxis = new Vector3( 0, 1, 0 );\n\tconst shaderMaterial = new RawShaderMaterial( {\n\n\t\tname: 'SphericalGaussianBlur',\n\n\t\tdefines: { 'n': maxSamples },\n\n\t\tuniforms: {\n\t\t\t'envMap': { value: null },\n\t\t\t'samples': { value: 1 },\n\t\t\t'weights': { value: weights },\n\t\t\t'latitudinal': { value: false },\n\t\t\t'dTheta': { value: 0 },\n\t\t\t'mipInt': { value: 0 },\n\t\t\t'poleAxis': { value: poleAxis },\n\t\t\t'inputEncoding': { value: ENCODINGS[ LinearEncoding ] },\n\t\t\t'outputEncoding': { value: ENCODINGS[ LinearEncoding ] }\n\t\t},\n\n\t\tvertexShader: _getCommonVertexShader(),\n\n\t\tfragmentShader: /* glsl */`\n\n\t\t\tprecision mediump float;\n\t\t\tprecision mediump int;\n\n\t\t\tvarying vec3 vOutputDirection;\n\n\t\t\tuniform sampler2D envMap;\n\t\t\tuniform int samples;\n\t\t\tuniform float weights[ n ];\n\t\t\tuniform bool latitudinal;\n\t\t\tuniform float dTheta;\n\t\t\tuniform float mipInt;\n\t\t\tuniform vec3 poleAxis;\n\n\t\t\t${ _getEncodings() }\n\n\t\t\t#define ENVMAP_TYPE_CUBE_UV\n\t\t\t#include <cube_uv_reflection_fragment>\n\n\t\t\tvec3 getSample( float theta, vec3 axis ) {\n\n\t\t\t\tfloat cosTheta = cos( theta );\n\t\t\t\t// Rodrigues' axis-angle rotation\n\t\t\t\tvec3 sampleDirection = vOutputDirection * cosTheta\n\t\t\t\t\t+ cross( axis, vOutputDirection ) * sin( theta )\n\t\t\t\t\t+ axis * dot( axis, vOutputDirection ) * ( 1.0 - cosTheta );\n\n\t\t\t\treturn bilinearCubeUV( envMap, sampleDirection, mipInt );\n\n\t\t\t}\n\n\t\t\tvoid main() {\n\n\t\t\t\tvec3 axis = latitudinal ? poleAxis : cross( poleAxis, vOutputDirection );\n\n\t\t\t\tif ( all( equal( axis, vec3( 0.0 ) ) ) ) {\n\n\t\t\t\t\taxis = vec3( vOutputDirection.z, 0.0, - vOutputDirection.x );\n\n\t\t\t\t}\n\n\t\t\t\taxis = normalize( axis );\n\n\t\t\t\tgl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );\n\t\t\t\tgl_FragColor.rgb += weights[ 0 ] * getSample( 0.0, axis );\n\n\t\t\t\tfor ( int i = 1; i < n; i++ ) {\n\n\t\t\t\t\tif ( i >= samples ) {\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tfloat theta = dTheta * float( i );\n\t\t\t\t\tgl_FragColor.rgb += weights[ i ] * getSample( -1.0 * theta, axis );\n\t\t\t\t\tgl_FragColor.rgb += weights[ i ] * getSample( theta, axis );\n\n\t\t\t\t}\n\n\t\t\t\tgl_FragColor = linearToOutputTexel( gl_FragColor );\n\n\t\t\t}\n\t\t`,\n\n\t\tblending: NoBlending,\n\t\tdepthTest: false,\n\t\tdepthWrite: false\n\n\t} );\n\n\treturn shaderMaterial;\n\n}\n\nfunction _getEquirectShader() {\n\n\tconst texelSize = new Vector2( 1, 1 );\n\tconst shaderMaterial = new RawShaderMaterial( {\n\n\t\tname: 'EquirectangularToCubeUV',\n\n\t\tuniforms: {\n\t\t\t'envMap': { value: null },\n\t\t\t'texelSize': { value: texelSize },\n\t\t\t'inputEncoding': { value: ENCODINGS[ LinearEncoding ] },\n\t\t\t'outputEncoding': { value: ENCODINGS[ LinearEncoding ] }\n\t\t},\n\n\t\tvertexShader: _getCommonVertexShader(),\n\n\t\tfragmentShader: /* glsl */`\n\n\t\t\tprecision mediump float;\n\t\t\tprecision mediump int;\n\n\t\t\tvarying vec3 vOutputDirection;\n\n\t\t\tuniform sampler2D envMap;\n\t\t\tuniform vec2 texelSize;\n\n\t\t\t${ _getEncodings() }\n\n\t\t\t#include <common>\n\n\t\t\tvoid main() {\n\n\t\t\t\tgl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );\n\n\t\t\t\tvec3 outputDirection = normalize( vOutputDirection );\n\t\t\t\tvec2 uv = equirectUv( outputDirection );\n\n\t\t\t\tvec2 f = fract( uv / texelSize - 0.5 );\n\t\t\t\tuv -= f * texelSize;\n\t\t\t\tvec3 tl = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;\n\t\t\t\tuv.x += texelSize.x;\n\t\t\t\tvec3 tr = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;\n\t\t\t\tuv.y += texelSize.y;\n\t\t\t\tvec3 br = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;\n\t\t\t\tuv.x -= texelSize.x;\n\t\t\t\tvec3 bl = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;\n\n\t\t\t\tvec3 tm = mix( tl, tr, f.x );\n\t\t\t\tvec3 bm = mix( bl, br, f.x );\n\t\t\t\tgl_FragColor.rgb = mix( tm, bm, f.y );\n\n\t\t\t\tgl_FragColor = linearToOutputTexel( gl_FragColor );\n\n\t\t\t}\n\t\t`,\n\n\t\tblending: NoBlending,\n\t\tdepthTest: false,\n\t\tdepthWrite: false\n\n\t} );\n\n\treturn shaderMaterial;\n\n}\n\nfunction _getCubemapShader() {\n\n\tconst shaderMaterial = new RawShaderMaterial( {\n\n\t\tname: 'CubemapToCubeUV',\n\n\t\tuniforms: {\n\t\t\t'envMap': { value: null },\n\t\t\t'inputEncoding': { value: ENCODINGS[ LinearEncoding ] },\n\t\t\t'outputEncoding': { value: ENCODINGS[ LinearEncoding ] }\n\t\t},\n\n\t\tvertexShader: _getCommonVertexShader(),\n\n\t\tfragmentShader: /* glsl */`\n\n\t\t\tprecision mediump float;\n\t\t\tprecision mediump int;\n\n\t\t\tvarying vec3 vOutputDirection;\n\n\t\t\tuniform samplerCube envMap;\n\n\t\t\t${ _getEncodings() }\n\n\t\t\tvoid main() {\n\n\t\t\t\tgl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );\n\t\t\t\tgl_FragColor.rgb = envMapTexelToLinear( textureCube( envMap, vec3( - vOutputDirection.x, vOutputDirection.yz ) ) ).rgb;\n\t\t\t\tgl_FragColor = linearToOutputTexel( gl_FragColor );\n\n\t\t\t}\n\t\t`,\n\n\t\tblending: NoBlending,\n\t\tdepthTest: false,\n\t\tdepthWrite: false\n\n\t} );\n\n\treturn shaderMaterial;\n\n}\n\nfunction _getCommonVertexShader() {\n\n\treturn /* glsl */`\n\n\t\tprecision mediump float;\n\t\tprecision mediump int;\n\n\t\tattribute vec3 position;\n\t\tattribute vec2 uv;\n\t\tattribute float faceIndex;\n\n\t\tvarying vec3 vOutputDirection;\n\n\t\t// RH coordinate system; PMREM face-indexing convention\n\t\tvec3 getDirection( vec2 uv, float face ) {\n\n\t\t\tuv = 2.0 * uv - 1.0;\n\n\t\t\tvec3 direction = vec3( uv, 1.0 );\n\n\t\t\tif ( face == 0.0 ) {\n\n\t\t\t\tdirection = direction.zyx; // ( 1, v, u ) pos x\n\n\t\t\t} else if ( face == 1.0 ) {\n\n\t\t\t\tdirection = direction.xzy;\n\t\t\t\tdirection.xz *= -1.0; // ( -u, 1, -v ) pos y\n\n\t\t\t} else if ( face == 2.0 ) {\n\n\t\t\t\tdirection.x *= -1.0; // ( -u, v, 1 ) pos z\n\n\t\t\t} else if ( face == 3.0 ) {\n\n\t\t\t\tdirection = direction.zyx;\n\t\t\t\tdirection.xz *= -1.0; // ( -1, v, -u ) neg x\n\n\t\t\t} else if ( face == 4.0 ) {\n\n\t\t\t\tdirection = direction.xzy;\n\t\t\t\tdirection.xy *= -1.0; // ( -u, -1, v ) neg y\n\n\t\t\t} else if ( face == 5.0 ) {\n\n\t\t\t\tdirection.z *= -1.0; // ( u, v, -1 ) neg z\n\n\t\t\t}\n\n\t\t\treturn direction;\n\n\t\t}\n\n\t\tvoid main() {\n\n\t\t\tvOutputDirection = getDirection( uv, faceIndex );\n\t\t\tgl_Position = vec4( position, 1.0 );\n\n\t\t}\n\t`;\n\n}\n\nfunction _getEncodings() {\n\n\treturn /* glsl */`\n\n\t\tuniform int inputEncoding;\n\t\tuniform int outputEncoding;\n\n\t\t#include <encodings_pars_fragment>\n\n\t\tvec4 inputTexelToLinear( vec4 value ) {\n\n\t\t\tif ( inputEncoding == 0 ) {\n\n\t\t\t\treturn value;\n\n\t\t\t} else if ( inputEncoding == 1 ) {\n\n\t\t\t\treturn sRGBToLinear( value );\n\n\t\t\t} else if ( inputEncoding == 2 ) {\n\n\t\t\t\treturn RGBEToLinear( value );\n\n\t\t\t} else if ( inputEncoding == 3 ) {\n\n\t\t\t\treturn RGBMToLinear( value, 7.0 );\n\n\t\t\t} else if ( inputEncoding == 4 ) {\n\n\t\t\t\treturn RGBMToLinear( value, 16.0 );\n\n\t\t\t} else if ( inputEncoding == 5 ) {\n\n\t\t\t\treturn RGBDToLinear( value, 256.0 );\n\n\t\t\t} else {\n\n\t\t\t\treturn GammaToLinear( value, 2.2 );\n\n\t\t\t}\n\n\t\t}\n\n\t\tvec4 linearToOutputTexel( vec4 value ) {\n\n\t\t\tif ( outputEncoding == 0 ) {\n\n\t\t\t\treturn value;\n\n\t\t\t} else if ( outputEncoding == 1 ) {\n\n\t\t\t\treturn LinearTosRGB( value );\n\n\t\t\t} else if ( outputEncoding == 2 ) {\n\n\t\t\t\treturn LinearToRGBE( value );\n\n\t\t\t} else if ( outputEncoding == 3 ) {\n\n\t\t\t\treturn LinearToRGBM( value, 7.0 );\n\n\t\t\t} else if ( outputEncoding == 4 ) {\n\n\t\t\t\treturn LinearToRGBM( value, 16.0 );\n\n\t\t\t} else if ( outputEncoding == 5 ) {\n\n\t\t\t\treturn LinearToRGBD( value, 256.0 );\n\n\t\t\t} else {\n\n\t\t\t\treturn LinearToGamma( value, 2.2 );\n\n\t\t\t}\n\n\t\t}\n\n\t\tvec4 envMapTexelToLinear( vec4 color ) {\n\n\t\t\treturn inputTexelToLinear( color );\n\n\t\t}\n\t`;\n\n}\n\nfunction Face4( a, b, c, d, normal, color, materialIndex ) {\n\n\tconsole.warn( 'THREE.Face4 has been removed. A THREE.Face3 will be created instead.' );\n\treturn new Face3( a, b, c, normal, color, materialIndex );\n\n}\n\nconst LineStrip = 0;\nconst LinePieces = 1;\nconst NoColors = 0;\nconst FaceColors = 1;\nconst VertexColors = 2;\n\nfunction MeshFaceMaterial( materials ) {\n\n\tconsole.warn( 'THREE.MeshFaceMaterial has been removed. Use an Array instead.' );\n\treturn materials;\n\n}\n\nfunction MultiMaterial( materials = [] ) {\n\n\tconsole.warn( 'THREE.MultiMaterial has been removed. Use an Array instead.' );\n\tmaterials.isMultiMaterial = true;\n\tmaterials.materials = materials;\n\tmaterials.clone = function () {\n\n\t\treturn materials.slice();\n\n\t};\n\n\treturn materials;\n\n}\n\nfunction PointCloud( geometry, material ) {\n\n\tconsole.warn( 'THREE.PointCloud has been renamed to THREE.Points.' );\n\treturn new Points( geometry, material );\n\n}\n\nfunction Particle( material ) {\n\n\tconsole.warn( 'THREE.Particle has been renamed to THREE.Sprite.' );\n\treturn new Sprite( material );\n\n}\n\nfunction ParticleSystem( geometry, material ) {\n\n\tconsole.warn( 'THREE.ParticleSystem has been renamed to THREE.Points.' );\n\treturn new Points( geometry, material );\n\n}\n\nfunction PointCloudMaterial( parameters ) {\n\n\tconsole.warn( 'THREE.PointCloudMaterial has been renamed to THREE.PointsMaterial.' );\n\treturn new PointsMaterial( parameters );\n\n}\n\nfunction ParticleBasicMaterial( parameters ) {\n\n\tconsole.warn( 'THREE.ParticleBasicMaterial has been renamed to THREE.PointsMaterial.' );\n\treturn new PointsMaterial( parameters );\n\n}\n\nfunction ParticleSystemMaterial( parameters ) {\n\n\tconsole.warn( 'THREE.ParticleSystemMaterial has been renamed to THREE.PointsMaterial.' );\n\treturn new PointsMaterial( parameters );\n\n}\n\nfunction Vertex( x, y, z ) {\n\n\tconsole.warn( 'THREE.Vertex has been removed. Use THREE.Vector3 instead.' );\n\treturn new Vector3( x, y, z );\n\n}\n\n//\n\nfunction DynamicBufferAttribute( array, itemSize ) {\n\n\tconsole.warn( 'THREE.DynamicBufferAttribute has been removed. Use new THREE.BufferAttribute().setUsage( THREE.DynamicDrawUsage ) instead.' );\n\treturn new BufferAttribute( array, itemSize ).setUsage( DynamicDrawUsage );\n\n}\n\nfunction Int8Attribute( array, itemSize ) {\n\n\tconsole.warn( 'THREE.Int8Attribute has been removed. Use new THREE.Int8BufferAttribute() instead.' );\n\treturn new Int8BufferAttribute( array, itemSize );\n\n}\n\nfunction Uint8Attribute( array, itemSize ) {\n\n\tconsole.warn( 'THREE.Uint8Attribute has been removed. Use new THREE.Uint8BufferAttribute() instead.' );\n\treturn new Uint8BufferAttribute( array, itemSize );\n\n}\n\nfunction Uint8ClampedAttribute( array, itemSize ) {\n\n\tconsole.warn( 'THREE.Uint8ClampedAttribute has been removed. Use new THREE.Uint8ClampedBufferAttribute() instead.' );\n\treturn new Uint8ClampedBufferAttribute( array, itemSize );\n\n}\n\nfunction Int16Attribute( array, itemSize ) {\n\n\tconsole.warn( 'THREE.Int16Attribute has been removed. Use new THREE.Int16BufferAttribute() instead.' );\n\treturn new Int16BufferAttribute( array, itemSize );\n\n}\n\nfunction Uint16Attribute( array, itemSize ) {\n\n\tconsole.warn( 'THREE.Uint16Attribute has been removed. Use new THREE.Uint16BufferAttribute() instead.' );\n\treturn new Uint16BufferAttribute( array, itemSize );\n\n}\n\nfunction Int32Attribute( array, itemSize ) {\n\n\tconsole.warn( 'THREE.Int32Attribute has been removed. Use new THREE.Int32BufferAttribute() instead.' );\n\treturn new Int32BufferAttribute( array, itemSize );\n\n}\n\nfunction Uint32Attribute( array, itemSize ) {\n\n\tconsole.warn( 'THREE.Uint32Attribute has been removed. Use new THREE.Uint32BufferAttribute() instead.' );\n\treturn new Uint32BufferAttribute( array, itemSize );\n\n}\n\nfunction Float32Attribute( array, itemSize ) {\n\n\tconsole.warn( 'THREE.Float32Attribute has been removed. Use new THREE.Float32BufferAttribute() instead.' );\n\treturn new Float32BufferAttribute( array, itemSize );\n\n}\n\nfunction Float64Attribute( array, itemSize ) {\n\n\tconsole.warn( 'THREE.Float64Attribute has been removed. Use new THREE.Float64BufferAttribute() instead.' );\n\treturn new Float64BufferAttribute( array, itemSize );\n\n}\n\n//\n\nCurve.create = function ( construct, getPoint ) {\n\n\tconsole.log( 'THREE.Curve.create() has been deprecated' );\n\n\tconstruct.prototype = Object.create( Curve.prototype );\n\tconstruct.prototype.constructor = construct;\n\tconstruct.prototype.getPoint = getPoint;\n\n\treturn construct;\n\n};\n\n//\n\nObject.assign( CurvePath.prototype, {\n\n\tcreatePointsGeometry: function ( divisions ) {\n\n\t\tconsole.warn( 'THREE.CurvePath: .createPointsGeometry() has been removed. Use new THREE.Geometry().setFromPoints( points ) instead.' );\n\n\t\t// generate geometry from path points (for Line or Points objects)\n\n\t\tconst pts = this.getPoints( divisions );\n\t\treturn this.createGeometry( pts );\n\n\t},\n\n\tcreateSpacedPointsGeometry: function ( divisions ) {\n\n\t\tconsole.warn( 'THREE.CurvePath: .createSpacedPointsGeometry() has been removed. Use new THREE.Geometry().setFromPoints( points ) instead.' );\n\n\t\t// generate geometry from equidistant sampling along the path\n\n\t\tconst pts = this.getSpacedPoints( divisions );\n\t\treturn this.createGeometry( pts );\n\n\t},\n\n\tcreateGeometry: function ( points ) {\n\n\t\tconsole.warn( 'THREE.CurvePath: .createGeometry() has been removed. Use new THREE.Geometry().setFromPoints( points ) instead.' );\n\n\t\tconst geometry = new Geometry();\n\n\t\tfor ( let i = 0, l = points.length; i < l; i ++ ) {\n\n\t\t\tconst point = points[ i ];\n\t\t\tgeometry.vertices.push( new Vector3( point.x, point.y, point.z || 0 ) );\n\n\t\t}\n\n\t\treturn geometry;\n\n\t}\n\n} );\n\n//\n\nObject.assign( Path.prototype, {\n\n\tfromPoints: function ( points ) {\n\n\t\tconsole.warn( 'THREE.Path: .fromPoints() has been renamed to .setFromPoints().' );\n\t\treturn this.setFromPoints( points );\n\n\t}\n\n} );\n\n//\n\nfunction ClosedSplineCurve3( points ) {\n\n\tconsole.warn( 'THREE.ClosedSplineCurve3 has been deprecated. Use THREE.CatmullRomCurve3 instead.' );\n\n\tCatmullRomCurve3.call( this, points );\n\tthis.type = 'catmullrom';\n\tthis.closed = true;\n\n}\n\nClosedSplineCurve3.prototype = Object.create( CatmullRomCurve3.prototype );\n\n//\n\nfunction SplineCurve3( points ) {\n\n\tconsole.warn( 'THREE.SplineCurve3 has been deprecated. Use THREE.CatmullRomCurve3 instead.' );\n\n\tCatmullRomCurve3.call( this, points );\n\tthis.type = 'catmullrom';\n\n}\n\nSplineCurve3.prototype = Object.create( CatmullRomCurve3.prototype );\n\n//\n\nfunction Spline( points ) {\n\n\tconsole.warn( 'THREE.Spline has been removed. Use THREE.CatmullRomCurve3 instead.' );\n\n\tCatmullRomCurve3.call( this, points );\n\tthis.type = 'catmullrom';\n\n}\n\nSpline.prototype = Object.create( CatmullRomCurve3.prototype );\n\nObject.assign( Spline.prototype, {\n\n\tinitFromArray: function ( /* a */ ) {\n\n\t\tconsole.error( 'THREE.Spline: .initFromArray() has been removed.' );\n\n\t},\n\tgetControlPointsArray: function ( /* optionalTarget */ ) {\n\n\t\tconsole.error( 'THREE.Spline: .getControlPointsArray() has been removed.' );\n\n\t},\n\treparametrizeByArcLength: function ( /* samplingCoef */ ) {\n\n\t\tconsole.error( 'THREE.Spline: .reparametrizeByArcLength() has been removed.' );\n\n\t}\n\n} );\n\n//\n\nfunction AxisHelper( size ) {\n\n\tconsole.warn( 'THREE.AxisHelper has been renamed to THREE.AxesHelper.' );\n\treturn new AxesHelper( size );\n\n}\n\nfunction BoundingBoxHelper( object, color ) {\n\n\tconsole.warn( 'THREE.BoundingBoxHelper has been deprecated. Creating a THREE.BoxHelper instead.' );\n\treturn new BoxHelper( object, color );\n\n}\n\nfunction EdgesHelper( object, hex ) {\n\n\tconsole.warn( 'THREE.EdgesHelper has been removed. Use THREE.EdgesGeometry instead.' );\n\treturn new LineSegments( new EdgesGeometry( object.geometry ), new LineBasicMaterial( { color: hex !== undefined ? hex : 0xffffff } ) );\n\n}\n\nGridHelper.prototype.setColors = function () {\n\n\tconsole.error( 'THREE.GridHelper: setColors() has been deprecated, pass them in the constructor instead.' );\n\n};\n\nSkeletonHelper.prototype.update = function () {\n\n\tconsole.error( 'THREE.SkeletonHelper: update() no longer needs to be called.' );\n\n};\n\nfunction WireframeHelper( object, hex ) {\n\n\tconsole.warn( 'THREE.WireframeHelper has been removed. Use THREE.WireframeGeometry instead.' );\n\treturn new LineSegments( new WireframeGeometry( object.geometry ), new LineBasicMaterial( { color: hex !== undefined ? hex : 0xffffff } ) );\n\n}\n\n//\n\nObject.assign( Loader.prototype, {\n\n\textractUrlBase: function ( url ) {\n\n\t\tconsole.warn( 'THREE.Loader: .extractUrlBase() has been deprecated. Use THREE.LoaderUtils.extractUrlBase() instead.' );\n\t\treturn LoaderUtils.extractUrlBase( url );\n\n\t}\n\n} );\n\nLoader.Handlers = {\n\n\tadd: function ( /* regex, loader */ ) {\n\n\t\tconsole.error( 'THREE.Loader: Handlers.add() has been removed. Use LoadingManager.addHandler() instead.' );\n\n\t},\n\n\tget: function ( /* file */ ) {\n\n\t\tconsole.error( 'THREE.Loader: Handlers.get() has been removed. Use LoadingManager.getHandler() instead.' );\n\n\t}\n\n};\n\nfunction XHRLoader( manager ) {\n\n\tconsole.warn( 'THREE.XHRLoader has been renamed to THREE.FileLoader.' );\n\treturn new FileLoader( manager );\n\n}\n\nfunction BinaryTextureLoader( manager ) {\n\n\tconsole.warn( 'THREE.BinaryTextureLoader has been renamed to THREE.DataTextureLoader.' );\n\treturn new DataTextureLoader( manager );\n\n}\n\n//\n\nObject.assign( Box2.prototype, {\n\n\tcenter: function ( optionalTarget ) {\n\n\t\tconsole.warn( 'THREE.Box2: .center() has been renamed to .getCenter().' );\n\t\treturn this.getCenter( optionalTarget );\n\n\t},\n\tempty: function () {\n\n\t\tconsole.warn( 'THREE.Box2: .empty() has been renamed to .isEmpty().' );\n\t\treturn this.isEmpty();\n\n\t},\n\tisIntersectionBox: function ( box ) {\n\n\t\tconsole.warn( 'THREE.Box2: .isIntersectionBox() has been renamed to .intersectsBox().' );\n\t\treturn this.intersectsBox( box );\n\n\t},\n\tsize: function ( optionalTarget ) {\n\n\t\tconsole.warn( 'THREE.Box2: .size() has been renamed to .getSize().' );\n\t\treturn this.getSize( optionalTarget );\n\n\t}\n} );\n\nObject.assign( Box3.prototype, {\n\n\tcenter: function ( optionalTarget ) {\n\n\t\tconsole.warn( 'THREE.Box3: .center() has been renamed to .getCenter().' );\n\t\treturn this.getCenter( optionalTarget );\n\n\t},\n\tempty: function () {\n\n\t\tconsole.warn( 'THREE.Box3: .empty() has been renamed to .isEmpty().' );\n\t\treturn this.isEmpty();\n\n\t},\n\tisIntersectionBox: function ( box ) {\n\n\t\tconsole.warn( 'THREE.Box3: .isIntersectionBox() has been renamed to .intersectsBox().' );\n\t\treturn this.intersectsBox( box );\n\n\t},\n\tisIntersectionSphere: function ( sphere ) {\n\n\t\tconsole.warn( 'THREE.Box3: .isIntersectionSphere() has been renamed to .intersectsSphere().' );\n\t\treturn this.intersectsSphere( sphere );\n\n\t},\n\tsize: function ( optionalTarget ) {\n\n\t\tconsole.warn( 'THREE.Box3: .size() has been renamed to .getSize().' );\n\t\treturn this.getSize( optionalTarget );\n\n\t}\n} );\n\nObject.assign( Sphere.prototype, {\n\n\tempty: function () {\n\n\t\tconsole.warn( 'THREE.Sphere: .empty() has been renamed to .isEmpty().' );\n\t\treturn this.isEmpty();\n\n\t},\n\n} );\n\nFrustum.prototype.setFromMatrix = function ( m ) {\n\n\tconsole.warn( 'THREE.Frustum: .setFromMatrix() has been renamed to .setFromProjectionMatrix().' );\n\treturn this.setFromProjectionMatrix( m );\n\n};\n\nLine3.prototype.center = function ( optionalTarget ) {\n\n\tconsole.warn( 'THREE.Line3: .center() has been renamed to .getCenter().' );\n\treturn this.getCenter( optionalTarget );\n\n};\n\nObject.assign( MathUtils, {\n\n\trandom16: function () {\n\n\t\tconsole.warn( 'THREE.Math: .random16() has been deprecated. Use Math.random() instead.' );\n\t\treturn Math.random();\n\n\t},\n\n\tnearestPowerOfTwo: function ( value ) {\n\n\t\tconsole.warn( 'THREE.Math: .nearestPowerOfTwo() has been renamed to .floorPowerOfTwo().' );\n\t\treturn MathUtils.floorPowerOfTwo( value );\n\n\t},\n\n\tnextPowerOfTwo: function ( value ) {\n\n\t\tconsole.warn( 'THREE.Math: .nextPowerOfTwo() has been renamed to .ceilPowerOfTwo().' );\n\t\treturn MathUtils.ceilPowerOfTwo( value );\n\n\t}\n\n} );\n\nObject.assign( Matrix3.prototype, {\n\n\tflattenToArrayOffset: function ( array, offset ) {\n\n\t\tconsole.warn( 'THREE.Matrix3: .flattenToArrayOffset() has been deprecated. Use .toArray() instead.' );\n\t\treturn this.toArray( array, offset );\n\n\t},\n\tmultiplyVector3: function ( vector ) {\n\n\t\tconsole.warn( 'THREE.Matrix3: .multiplyVector3() has been removed. Use vector.applyMatrix3( matrix ) instead.' );\n\t\treturn vector.applyMatrix3( this );\n\n\t},\n\tmultiplyVector3Array: function ( /* a */ ) {\n\n\t\tconsole.error( 'THREE.Matrix3: .multiplyVector3Array() has been removed.' );\n\n\t},\n\tapplyToBufferAttribute: function ( attribute ) {\n\n\t\tconsole.warn( 'THREE.Matrix3: .applyToBufferAttribute() has been removed. Use attribute.applyMatrix3( matrix ) instead.' );\n\t\treturn attribute.applyMatrix3( this );\n\n\t},\n\tapplyToVector3Array: function ( /* array, offset, length */ ) {\n\n\t\tconsole.error( 'THREE.Matrix3: .applyToVector3Array() has been removed.' );\n\n\t},\n\tgetInverse: function ( matrix ) {\n\n\t\tconsole.warn( 'THREE.Matrix3: .getInverse() has been removed. Use matrixInv.copy( matrix ).invert(); instead.' );\n\t\treturn this.copy( matrix ).invert();\n\n\t}\n\n} );\n\nObject.assign( Matrix4.prototype, {\n\n\textractPosition: function ( m ) {\n\n\t\tconsole.warn( 'THREE.Matrix4: .extractPosition() has been renamed to .copyPosition().' );\n\t\treturn this.copyPosition( m );\n\n\t},\n\tflattenToArrayOffset: function ( array, offset ) {\n\n\t\tconsole.warn( 'THREE.Matrix4: .flattenToArrayOffset() has been deprecated. Use .toArray() instead.' );\n\t\treturn this.toArray( array, offset );\n\n\t},\n\tgetPosition: function () {\n\n\t\tconsole.warn( 'THREE.Matrix4: .getPosition() has been removed. Use Vector3.setFromMatrixPosition( matrix ) instead.' );\n\t\treturn new Vector3().setFromMatrixColumn( this, 3 );\n\n\t},\n\tsetRotationFromQuaternion: function ( q ) {\n\n\t\tconsole.warn( 'THREE.Matrix4: .setRotationFromQuaternion() has been renamed to .makeRotationFromQuaternion().' );\n\t\treturn this.makeRotationFromQuaternion( q );\n\n\t},\n\tmultiplyToArray: function () {\n\n\t\tconsole.warn( 'THREE.Matrix4: .multiplyToArray() has been removed.' );\n\n\t},\n\tmultiplyVector3: function ( vector ) {\n\n\t\tconsole.warn( 'THREE.Matrix4: .multiplyVector3() has been removed. Use vector.applyMatrix4( matrix ) instead.' );\n\t\treturn vector.applyMatrix4( this );\n\n\t},\n\tmultiplyVector4: function ( vector ) {\n\n\t\tconsole.warn( 'THREE.Matrix4: .multiplyVector4() has been removed. Use vector.applyMatrix4( matrix ) instead.' );\n\t\treturn vector.applyMatrix4( this );\n\n\t},\n\tmultiplyVector3Array: function ( /* a */ ) {\n\n\t\tconsole.error( 'THREE.Matrix4: .multiplyVector3Array() has been removed.' );\n\n\t},\n\trotateAxis: function ( v ) {\n\n\t\tconsole.warn( 'THREE.Matrix4: .rotateAxis() has been removed. Use Vector3.transformDirection( matrix ) instead.' );\n\t\tv.transformDirection( this );\n\n\t},\n\tcrossVector: function ( vector ) {\n\n\t\tconsole.warn( 'THREE.Matrix4: .crossVector() has been removed. Use vector.applyMatrix4( matrix ) instead.' );\n\t\treturn vector.applyMatrix4( this );\n\n\t},\n\ttranslate: function () {\n\n\t\tconsole.error( 'THREE.Matrix4: .translate() has been removed.' );\n\n\t},\n\trotateX: function () {\n\n\t\tconsole.error( 'THREE.Matrix4: .rotateX() has been removed.' );\n\n\t},\n\trotateY: function () {\n\n\t\tconsole.error( 'THREE.Matrix4: .rotateY() has been removed.' );\n\n\t},\n\trotateZ: function () {\n\n\t\tconsole.error( 'THREE.Matrix4: .rotateZ() has been removed.' );\n\n\t},\n\trotateByAxis: function () {\n\n\t\tconsole.error( 'THREE.Matrix4: .rotateByAxis() has been removed.' );\n\n\t},\n\tapplyToBufferAttribute: function ( attribute ) {\n\n\t\tconsole.warn( 'THREE.Matrix4: .applyToBufferAttribute() has been removed. Use attribute.applyMatrix4( matrix ) instead.' );\n\t\treturn attribute.applyMatrix4( this );\n\n\t},\n\tapplyToVector3Array: function ( /* array, offset, length */ ) {\n\n\t\tconsole.error( 'THREE.Matrix4: .applyToVector3Array() has been removed.' );\n\n\t},\n\tmakeFrustum: function ( left, right, bottom, top, near, far ) {\n\n\t\tconsole.warn( 'THREE.Matrix4: .makeFrustum() has been removed. Use .makePerspective( left, right, top, bottom, near, far ) instead.' );\n\t\treturn this.makePerspective( left, right, top, bottom, near, far );\n\n\t},\n\tgetInverse: function ( matrix ) {\n\n\t\tconsole.warn( 'THREE.Matrix4: .getInverse() has been removed. Use matrixInv.copy( matrix ).invert(); instead.' );\n\t\treturn this.copy( matrix ).invert();\n\n\t}\n\n} );\n\nPlane.prototype.isIntersectionLine = function ( line ) {\n\n\tconsole.warn( 'THREE.Plane: .isIntersectionLine() has been renamed to .intersectsLine().' );\n\treturn this.intersectsLine( line );\n\n};\n\nObject.assign( Quaternion.prototype, {\n\n\tmultiplyVector3: function ( vector ) {\n\n\t\tconsole.warn( 'THREE.Quaternion: .multiplyVector3() has been removed. Use is now vector.applyQuaternion( quaternion ) instead.' );\n\t\treturn vector.applyQuaternion( this );\n\n\t},\n\tinverse: function ( ) {\n\n\t\tconsole.warn( 'THREE.Quaternion: .inverse() has been renamed to invert().' );\n\t\treturn this.invert();\n\n\t}\n\n} );\n\nObject.assign( Ray.prototype, {\n\n\tisIntersectionBox: function ( box ) {\n\n\t\tconsole.warn( 'THREE.Ray: .isIntersectionBox() has been renamed to .intersectsBox().' );\n\t\treturn this.intersectsBox( box );\n\n\t},\n\tisIntersectionPlane: function ( plane ) {\n\n\t\tconsole.warn( 'THREE.Ray: .isIntersectionPlane() has been renamed to .intersectsPlane().' );\n\t\treturn this.intersectsPlane( plane );\n\n\t},\n\tisIntersectionSphere: function ( sphere ) {\n\n\t\tconsole.warn( 'THREE.Ray: .isIntersectionSphere() has been renamed to .intersectsSphere().' );\n\t\treturn this.intersectsSphere( sphere );\n\n\t}\n\n} );\n\nObject.assign( Triangle.prototype, {\n\n\tarea: function () {\n\n\t\tconsole.warn( 'THREE.Triangle: .area() has been renamed to .getArea().' );\n\t\treturn this.getArea();\n\n\t},\n\tbarycoordFromPoint: function ( point, target ) {\n\n\t\tconsole.warn( 'THREE.Triangle: .barycoordFromPoint() has been renamed to .getBarycoord().' );\n\t\treturn this.getBarycoord( point, target );\n\n\t},\n\tmidpoint: function ( target ) {\n\n\t\tconsole.warn( 'THREE.Triangle: .midpoint() has been renamed to .getMidpoint().' );\n\t\treturn this.getMidpoint( target );\n\n\t},\n\tnormal: function ( target ) {\n\n\t\tconsole.warn( 'THREE.Triangle: .normal() has been renamed to .getNormal().' );\n\t\treturn this.getNormal( target );\n\n\t},\n\tplane: function ( target ) {\n\n\t\tconsole.warn( 'THREE.Triangle: .plane() has been renamed to .getPlane().' );\n\t\treturn this.getPlane( target );\n\n\t}\n\n} );\n\nObject.assign( Triangle, {\n\n\tbarycoordFromPoint: function ( point, a, b, c, target ) {\n\n\t\tconsole.warn( 'THREE.Triangle: .barycoordFromPoint() has been renamed to .getBarycoord().' );\n\t\treturn Triangle.getBarycoord( point, a, b, c, target );\n\n\t},\n\tnormal: function ( a, b, c, target ) {\n\n\t\tconsole.warn( 'THREE.Triangle: .normal() has been renamed to .getNormal().' );\n\t\treturn Triangle.getNormal( a, b, c, target );\n\n\t}\n\n} );\n\nObject.assign( Shape.prototype, {\n\n\textractAllPoints: function ( divisions ) {\n\n\t\tconsole.warn( 'THREE.Shape: .extractAllPoints() has been removed. Use .extractPoints() instead.' );\n\t\treturn this.extractPoints( divisions );\n\n\t},\n\textrude: function ( options ) {\n\n\t\tconsole.warn( 'THREE.Shape: .extrude() has been removed. Use ExtrudeGeometry() instead.' );\n\t\treturn new ExtrudeGeometry( this, options );\n\n\t},\n\tmakeGeometry: function ( options ) {\n\n\t\tconsole.warn( 'THREE.Shape: .makeGeometry() has been removed. Use ShapeGeometry() instead.' );\n\t\treturn new ShapeGeometry( this, options );\n\n\t}\n\n} );\n\nObject.assign( Vector2.prototype, {\n\n\tfromAttribute: function ( attribute, index, offset ) {\n\n\t\tconsole.warn( 'THREE.Vector2: .fromAttribute() has been renamed to .fromBufferAttribute().' );\n\t\treturn this.fromBufferAttribute( attribute, index, offset );\n\n\t},\n\tdistanceToManhattan: function ( v ) {\n\n\t\tconsole.warn( 'THREE.Vector2: .distanceToManhattan() has been renamed to .manhattanDistanceTo().' );\n\t\treturn this.manhattanDistanceTo( v );\n\n\t},\n\tlengthManhattan: function () {\n\n\t\tconsole.warn( 'THREE.Vector2: .lengthManhattan() has been renamed to .manhattanLength().' );\n\t\treturn this.manhattanLength();\n\n\t}\n\n} );\n\nObject.assign( Vector3.prototype, {\n\n\tsetEulerFromRotationMatrix: function () {\n\n\t\tconsole.error( 'THREE.Vector3: .setEulerFromRotationMatrix() has been removed. Use Euler.setFromRotationMatrix() instead.' );\n\n\t},\n\tsetEulerFromQuaternion: function () {\n\n\t\tconsole.error( 'THREE.Vector3: .setEulerFromQuaternion() has been removed. Use Euler.setFromQuaternion() instead.' );\n\n\t},\n\tgetPositionFromMatrix: function ( m ) {\n\n\t\tconsole.warn( 'THREE.Vector3: .getPositionFromMatrix() has been renamed to .setFromMatrixPosition().' );\n\t\treturn this.setFromMatrixPosition( m );\n\n\t},\n\tgetScaleFromMatrix: function ( m ) {\n\n\t\tconsole.warn( 'THREE.Vector3: .getScaleFromMatrix() has been renamed to .setFromMatrixScale().' );\n\t\treturn this.setFromMatrixScale( m );\n\n\t},\n\tgetColumnFromMatrix: function ( index, matrix ) {\n\n\t\tconsole.warn( 'THREE.Vector3: .getColumnFromMatrix() has been renamed to .setFromMatrixColumn().' );\n\t\treturn this.setFromMatrixColumn( matrix, index );\n\n\t},\n\tapplyProjection: function ( m ) {\n\n\t\tconsole.warn( 'THREE.Vector3: .applyProjection() has been removed. Use .applyMatrix4( m ) instead.' );\n\t\treturn this.applyMatrix4( m );\n\n\t},\n\tfromAttribute: function ( attribute, index, offset ) {\n\n\t\tconsole.warn( 'THREE.Vector3: .fromAttribute() has been renamed to .fromBufferAttribute().' );\n\t\treturn this.fromBufferAttribute( attribute, index, offset );\n\n\t},\n\tdistanceToManhattan: function ( v ) {\n\n\t\tconsole.warn( 'THREE.Vector3: .distanceToManhattan() has been renamed to .manhattanDistanceTo().' );\n\t\treturn this.manhattanDistanceTo( v );\n\n\t},\n\tlengthManhattan: function () {\n\n\t\tconsole.warn( 'THREE.Vector3: .lengthManhattan() has been renamed to .manhattanLength().' );\n\t\treturn this.manhattanLength();\n\n\t}\n\n} );\n\nObject.assign( Vector4.prototype, {\n\n\tfromAttribute: function ( attribute, index, offset ) {\n\n\t\tconsole.warn( 'THREE.Vector4: .fromAttribute() has been renamed to .fromBufferAttribute().' );\n\t\treturn this.fromBufferAttribute( attribute, index, offset );\n\n\t},\n\tlengthManhattan: function () {\n\n\t\tconsole.warn( 'THREE.Vector4: .lengthManhattan() has been renamed to .manhattanLength().' );\n\t\treturn this.manhattanLength();\n\n\t}\n\n} );\n\n//\n\nObject.assign( Geometry.prototype, {\n\n\tcomputeTangents: function () {\n\n\t\tconsole.error( 'THREE.Geometry: .computeTangents() has been removed.' );\n\n\t},\n\tcomputeLineDistances: function () {\n\n\t\tconsole.error( 'THREE.Geometry: .computeLineDistances() has been removed. Use THREE.Line.computeLineDistances() instead.' );\n\n\t},\n\tapplyMatrix: function ( matrix ) {\n\n\t\tconsole.warn( 'THREE.Geometry: .applyMatrix() has been renamed to .applyMatrix4().' );\n\t\treturn this.applyMatrix4( matrix );\n\n\t}\n\n} );\n\nObject.assign( Object3D.prototype, {\n\n\tgetChildByName: function ( name ) {\n\n\t\tconsole.warn( 'THREE.Object3D: .getChildByName() has been renamed to .getObjectByName().' );\n\t\treturn this.getObjectByName( name );\n\n\t},\n\trenderDepth: function () {\n\n\t\tconsole.warn( 'THREE.Object3D: .renderDepth has been removed. Use .renderOrder, instead.' );\n\n\t},\n\ttranslate: function ( distance, axis ) {\n\n\t\tconsole.warn( 'THREE.Object3D: .translate() has been removed. Use .translateOnAxis( axis, distance ) instead.' );\n\t\treturn this.translateOnAxis( axis, distance );\n\n\t},\n\tgetWorldRotation: function () {\n\n\t\tconsole.error( 'THREE.Object3D: .getWorldRotation() has been removed. Use THREE.Object3D.getWorldQuaternion( target ) instead.' );\n\n\t},\n\tapplyMatrix: function ( matrix ) {\n\n\t\tconsole.warn( 'THREE.Object3D: .applyMatrix() has been renamed to .applyMatrix4().' );\n\t\treturn this.applyMatrix4( matrix );\n\n\t}\n\n} );\n\nObject.defineProperties( Object3D.prototype, {\n\n\teulerOrder: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.Object3D: .eulerOrder is now .rotation.order.' );\n\t\t\treturn this.rotation.order;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.Object3D: .eulerOrder is now .rotation.order.' );\n\t\t\tthis.rotation.order = value;\n\n\t\t}\n\t},\n\tuseQuaternion: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.Object3D: .useQuaternion has been removed. The library now uses quaternions by default.' );\n\n\t\t},\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.Object3D: .useQuaternion has been removed. The library now uses quaternions by default.' );\n\n\t\t}\n\t}\n\n} );\n\nObject.assign( Mesh.prototype, {\n\n\tsetDrawMode: function () {\n\n\t\tconsole.error( 'THREE.Mesh: .setDrawMode() has been removed. The renderer now always assumes THREE.TrianglesDrawMode. Transform your geometry via BufferGeometryUtils.toTrianglesDrawMode() if necessary.' );\n\n\t},\n\n} );\n\nObject.defineProperties( Mesh.prototype, {\n\n\tdrawMode: {\n\t\tget: function () {\n\n\t\t\tconsole.error( 'THREE.Mesh: .drawMode has been removed. The renderer now always assumes THREE.TrianglesDrawMode.' );\n\t\t\treturn TrianglesDrawMode;\n\n\t\t},\n\t\tset: function () {\n\n\t\t\tconsole.error( 'THREE.Mesh: .drawMode has been removed. The renderer now always assumes THREE.TrianglesDrawMode. Transform your geometry via BufferGeometryUtils.toTrianglesDrawMode() if necessary.' );\n\n\t\t}\n\t}\n\n} );\n\nObject.defineProperties( LOD.prototype, {\n\n\tobjects: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.LOD: .objects has been renamed to .levels.' );\n\t\t\treturn this.levels;\n\n\t\t}\n\t}\n\n} );\n\nObject.defineProperty( Skeleton.prototype, 'useVertexTexture', {\n\n\tget: function () {\n\n\t\tconsole.warn( 'THREE.Skeleton: useVertexTexture has been removed.' );\n\n\t},\n\tset: function () {\n\n\t\tconsole.warn( 'THREE.Skeleton: useVertexTexture has been removed.' );\n\n\t}\n\n} );\n\nSkinnedMesh.prototype.initBones = function () {\n\n\tconsole.error( 'THREE.SkinnedMesh: initBones() has been removed.' );\n\n};\n\nObject.defineProperty( Curve.prototype, '__arcLengthDivisions', {\n\n\tget: function () {\n\n\t\tconsole.warn( 'THREE.Curve: .__arcLengthDivisions is now .arcLengthDivisions.' );\n\t\treturn this.arcLengthDivisions;\n\n\t},\n\tset: function ( value ) {\n\n\t\tconsole.warn( 'THREE.Curve: .__arcLengthDivisions is now .arcLengthDivisions.' );\n\t\tthis.arcLengthDivisions = value;\n\n\t}\n\n} );\n\n//\n\nPerspectiveCamera.prototype.setLens = function ( focalLength, filmGauge ) {\n\n\tconsole.warn( 'THREE.PerspectiveCamera.setLens is deprecated. ' +\n\t\t\t'Use .setFocalLength and .filmGauge for a photographic setup.' );\n\n\tif ( filmGauge !== undefined ) this.filmGauge = filmGauge;\n\tthis.setFocalLength( focalLength );\n\n};\n\n//\n\nObject.defineProperties( Light.prototype, {\n\tonlyShadow: {\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.Light: .onlyShadow has been removed.' );\n\n\t\t}\n\t},\n\tshadowCameraFov: {\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.Light: .shadowCameraFov is now .shadow.camera.fov.' );\n\t\t\tthis.shadow.camera.fov = value;\n\n\t\t}\n\t},\n\tshadowCameraLeft: {\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.Light: .shadowCameraLeft is now .shadow.camera.left.' );\n\t\t\tthis.shadow.camera.left = value;\n\n\t\t}\n\t},\n\tshadowCameraRight: {\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.Light: .shadowCameraRight is now .shadow.camera.right.' );\n\t\t\tthis.shadow.camera.right = value;\n\n\t\t}\n\t},\n\tshadowCameraTop: {\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.Light: .shadowCameraTop is now .shadow.camera.top.' );\n\t\t\tthis.shadow.camera.top = value;\n\n\t\t}\n\t},\n\tshadowCameraBottom: {\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.Light: .shadowCameraBottom is now .shadow.camera.bottom.' );\n\t\t\tthis.shadow.camera.bottom = value;\n\n\t\t}\n\t},\n\tshadowCameraNear: {\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.Light: .shadowCameraNear is now .shadow.camera.near.' );\n\t\t\tthis.shadow.camera.near = value;\n\n\t\t}\n\t},\n\tshadowCameraFar: {\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.Light: .shadowCameraFar is now .shadow.camera.far.' );\n\t\t\tthis.shadow.camera.far = value;\n\n\t\t}\n\t},\n\tshadowCameraVisible: {\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.Light: .shadowCameraVisible has been removed. Use new THREE.CameraHelper( light.shadow.camera ) instead.' );\n\n\t\t}\n\t},\n\tshadowBias: {\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.Light: .shadowBias is now .shadow.bias.' );\n\t\t\tthis.shadow.bias = value;\n\n\t\t}\n\t},\n\tshadowDarkness: {\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.Light: .shadowDarkness has been removed.' );\n\n\t\t}\n\t},\n\tshadowMapWidth: {\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.Light: .shadowMapWidth is now .shadow.mapSize.width.' );\n\t\t\tthis.shadow.mapSize.width = value;\n\n\t\t}\n\t},\n\tshadowMapHeight: {\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.Light: .shadowMapHeight is now .shadow.mapSize.height.' );\n\t\t\tthis.shadow.mapSize.height = value;\n\n\t\t}\n\t}\n} );\n\n//\n\nObject.defineProperties( BufferAttribute.prototype, {\n\n\tlength: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.BufferAttribute: .length has been deprecated. Use .count instead.' );\n\t\t\treturn this.array.length;\n\n\t\t}\n\t},\n\tdynamic: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.BufferAttribute: .dynamic has been deprecated. Use .usage instead.' );\n\t\t\treturn this.usage === DynamicDrawUsage;\n\n\t\t},\n\t\tset: function ( /* value */ ) {\n\n\t\t\tconsole.warn( 'THREE.BufferAttribute: .dynamic has been deprecated. Use .usage instead.' );\n\t\t\tthis.setUsage( DynamicDrawUsage );\n\n\t\t}\n\t}\n\n} );\n\nObject.assign( BufferAttribute.prototype, {\n\tsetDynamic: function ( value ) {\n\n\t\tconsole.warn( 'THREE.BufferAttribute: .setDynamic() has been deprecated. Use .setUsage() instead.' );\n\t\tthis.setUsage( value === true ? DynamicDrawUsage : StaticDrawUsage );\n\t\treturn this;\n\n\t},\n\tcopyIndicesArray: function ( /* indices */ ) {\n\n\t\tconsole.error( 'THREE.BufferAttribute: .copyIndicesArray() has been removed.' );\n\n\t},\n\tsetArray: function ( /* array */ ) {\n\n\t\tconsole.error( 'THREE.BufferAttribute: .setArray has been removed. Use BufferGeometry .setAttribute to replace/resize attribute buffers' );\n\n\t}\n} );\n\nObject.assign( BufferGeometry.prototype, {\n\n\taddIndex: function ( index ) {\n\n\t\tconsole.warn( 'THREE.BufferGeometry: .addIndex() has been renamed to .setIndex().' );\n\t\tthis.setIndex( index );\n\n\t},\n\taddAttribute: function ( name, attribute ) {\n\n\t\tconsole.warn( 'THREE.BufferGeometry: .addAttribute() has been renamed to .setAttribute().' );\n\n\t\tif ( ! ( attribute && attribute.isBufferAttribute ) && ! ( attribute && attribute.isInterleavedBufferAttribute ) ) {\n\n\t\t\tconsole.warn( 'THREE.BufferGeometry: .addAttribute() now expects ( name, attribute ).' );\n\n\t\t\treturn this.setAttribute( name, new BufferAttribute( arguments[ 1 ], arguments[ 2 ] ) );\n\n\t\t}\n\n\t\tif ( name === 'index' ) {\n\n\t\t\tconsole.warn( 'THREE.BufferGeometry.addAttribute: Use .setIndex() for index attribute.' );\n\t\t\tthis.setIndex( attribute );\n\n\t\t\treturn this;\n\n\t\t}\n\n\t\treturn this.setAttribute( name, attribute );\n\n\t},\n\taddDrawCall: function ( start, count, indexOffset ) {\n\n\t\tif ( indexOffset !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.BufferGeometry: .addDrawCall() no longer supports indexOffset.' );\n\n\t\t}\n\n\t\tconsole.warn( 'THREE.BufferGeometry: .addDrawCall() is now .addGroup().' );\n\t\tthis.addGroup( start, count );\n\n\t},\n\tclearDrawCalls: function () {\n\n\t\tconsole.warn( 'THREE.BufferGeometry: .clearDrawCalls() is now .clearGroups().' );\n\t\tthis.clearGroups();\n\n\t},\n\tcomputeTangents: function () {\n\n\t\tconsole.warn( 'THREE.BufferGeometry: .computeTangents() has been removed.' );\n\n\t},\n\tcomputeOffsets: function () {\n\n\t\tconsole.warn( 'THREE.BufferGeometry: .computeOffsets() has been removed.' );\n\n\t},\n\tremoveAttribute: function ( name ) {\n\n\t\tconsole.warn( 'THREE.BufferGeometry: .removeAttribute() has been renamed to .deleteAttribute().' );\n\n\t\treturn this.deleteAttribute( name );\n\n\t},\n\tapplyMatrix: function ( matrix ) {\n\n\t\tconsole.warn( 'THREE.BufferGeometry: .applyMatrix() has been renamed to .applyMatrix4().' );\n\t\treturn this.applyMatrix4( matrix );\n\n\t}\n\n} );\n\nObject.defineProperties( BufferGeometry.prototype, {\n\n\tdrawcalls: {\n\t\tget: function () {\n\n\t\t\tconsole.error( 'THREE.BufferGeometry: .drawcalls has been renamed to .groups.' );\n\t\t\treturn this.groups;\n\n\t\t}\n\t},\n\toffsets: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.BufferGeometry: .offsets has been renamed to .groups.' );\n\t\t\treturn this.groups;\n\n\t\t}\n\t}\n\n} );\n\nObject.defineProperties( InstancedBufferGeometry.prototype, {\n\n\tmaxInstancedCount: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.InstancedBufferGeometry: .maxInstancedCount has been renamed to .instanceCount.' );\n\t\t\treturn this.instanceCount;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.InstancedBufferGeometry: .maxInstancedCount has been renamed to .instanceCount.' );\n\t\t\tthis.instanceCount = value;\n\n\t\t}\n\t}\n\n} );\n\nObject.defineProperties( Raycaster.prototype, {\n\n\tlinePrecision: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.Raycaster: .linePrecision has been deprecated. Use .params.Line.threshold instead.' );\n\t\t\treturn this.params.Line.threshold;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.Raycaster: .linePrecision has been deprecated. Use .params.Line.threshold instead.' );\n\t\t\tthis.params.Line.threshold = value;\n\n\t\t}\n\t}\n\n} );\n\nObject.defineProperties( InterleavedBuffer.prototype, {\n\n\tdynamic: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.InterleavedBuffer: .length has been deprecated. Use .usage instead.' );\n\t\t\treturn this.usage === DynamicDrawUsage;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.InterleavedBuffer: .length has been deprecated. Use .usage instead.' );\n\t\t\tthis.setUsage( value );\n\n\t\t}\n\t}\n\n} );\n\nObject.assign( InterleavedBuffer.prototype, {\n\tsetDynamic: function ( value ) {\n\n\t\tconsole.warn( 'THREE.InterleavedBuffer: .setDynamic() has been deprecated. Use .setUsage() instead.' );\n\t\tthis.setUsage( value === true ? DynamicDrawUsage : StaticDrawUsage );\n\t\treturn this;\n\n\t},\n\tsetArray: function ( /* array */ ) {\n\n\t\tconsole.error( 'THREE.InterleavedBuffer: .setArray has been removed. Use BufferGeometry .setAttribute to replace/resize attribute buffers' );\n\n\t}\n} );\n\n//\n\nObject.assign( ExtrudeBufferGeometry.prototype, {\n\n\tgetArrays: function () {\n\n\t\tconsole.error( 'THREE.ExtrudeBufferGeometry: .getArrays() has been removed.' );\n\n\t},\n\n\taddShapeList: function () {\n\n\t\tconsole.error( 'THREE.ExtrudeBufferGeometry: .addShapeList() has been removed.' );\n\n\t},\n\n\taddShape: function () {\n\n\t\tconsole.error( 'THREE.ExtrudeBufferGeometry: .addShape() has been removed.' );\n\n\t}\n\n} );\n\n//\n\nObject.assign( Scene.prototype, {\n\n\tdispose: function () {\n\n\t\tconsole.error( 'THREE.Scene: .dispose() has been removed.' );\n\n\t}\n\n} );\n\n//\n\nObject.defineProperties( Uniform.prototype, {\n\n\tdynamic: {\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.Uniform: .dynamic has been removed. Use object.onBeforeRender() instead.' );\n\n\t\t}\n\t},\n\tonUpdate: {\n\t\tvalue: function () {\n\n\t\t\tconsole.warn( 'THREE.Uniform: .onUpdate() has been removed. Use object.onBeforeRender() instead.' );\n\t\t\treturn this;\n\n\t\t}\n\t}\n\n} );\n\n//\n\nObject.defineProperties( Material.prototype, {\n\n\twrapAround: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.Material: .wrapAround has been removed.' );\n\n\t\t},\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.Material: .wrapAround has been removed.' );\n\n\t\t}\n\t},\n\n\toverdraw: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.Material: .overdraw has been removed.' );\n\n\t\t},\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.Material: .overdraw has been removed.' );\n\n\t\t}\n\t},\n\n\twrapRGB: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.Material: .wrapRGB has been removed.' );\n\t\t\treturn new Color();\n\n\t\t}\n\t},\n\n\tshading: {\n\t\tget: function () {\n\n\t\t\tconsole.error( 'THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.' );\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.' );\n\t\t\tthis.flatShading = ( value === FlatShading );\n\n\t\t}\n\t},\n\n\tstencilMask: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.' + this.type + ': .stencilMask has been removed. Use .stencilFuncMask instead.' );\n\t\t\treturn this.stencilFuncMask;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.' + this.type + ': .stencilMask has been removed. Use .stencilFuncMask instead.' );\n\t\t\tthis.stencilFuncMask = value;\n\n\t\t}\n\t}\n\n} );\n\nObject.defineProperties( MeshPhongMaterial.prototype, {\n\n\tmetal: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.MeshPhongMaterial: .metal has been removed. Use THREE.MeshStandardMaterial instead.' );\n\t\t\treturn false;\n\n\t\t},\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.MeshPhongMaterial: .metal has been removed. Use THREE.MeshStandardMaterial instead' );\n\n\t\t}\n\t}\n\n} );\n\nObject.defineProperties( MeshPhysicalMaterial.prototype, {\n\n\ttransparency: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.MeshPhysicalMaterial: .transparency has been renamed to .transmission.' );\n\t\t\treturn this.transmission;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.MeshPhysicalMaterial: .transparency has been renamed to .transmission.' );\n\t\t\tthis.transmission = value;\n\n\t\t}\n\t}\n\n} );\n\nObject.defineProperties( ShaderMaterial.prototype, {\n\n\tderivatives: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.ShaderMaterial: .derivatives has been moved to .extensions.derivatives.' );\n\t\t\treturn this.extensions.derivatives;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE. ShaderMaterial: .derivatives has been moved to .extensions.derivatives.' );\n\t\t\tthis.extensions.derivatives = value;\n\n\t\t}\n\t}\n\n} );\n\n//\n\nObject.assign( WebGLRenderer.prototype, {\n\n\tclearTarget: function ( renderTarget, color, depth, stencil ) {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .clearTarget() has been deprecated. Use .setRenderTarget() and .clear() instead.' );\n\t\tthis.setRenderTarget( renderTarget );\n\t\tthis.clear( color, depth, stencil );\n\n\t},\n\tanimate: function ( callback ) {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .animate() is now .setAnimationLoop().' );\n\t\tthis.setAnimationLoop( callback );\n\n\t},\n\tgetCurrentRenderTarget: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .getCurrentRenderTarget() is now .getRenderTarget().' );\n\t\treturn this.getRenderTarget();\n\n\t},\n\tgetMaxAnisotropy: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .getMaxAnisotropy() is now .capabilities.getMaxAnisotropy().' );\n\t\treturn this.capabilities.getMaxAnisotropy();\n\n\t},\n\tgetPrecision: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .getPrecision() is now .capabilities.precision.' );\n\t\treturn this.capabilities.precision;\n\n\t},\n\tresetGLState: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .resetGLState() is now .state.reset().' );\n\t\treturn this.state.reset();\n\n\t},\n\tsupportsFloatTextures: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .supportsFloatTextures() is now .extensions.get( \\'OES_texture_float\\' ).' );\n\t\treturn this.extensions.get( 'OES_texture_float' );\n\n\t},\n\tsupportsHalfFloatTextures: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .supportsHalfFloatTextures() is now .extensions.get( \\'OES_texture_half_float\\' ).' );\n\t\treturn this.extensions.get( 'OES_texture_half_float' );\n\n\t},\n\tsupportsStandardDerivatives: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .supportsStandardDerivatives() is now .extensions.get( \\'OES_standard_derivatives\\' ).' );\n\t\treturn this.extensions.get( 'OES_standard_derivatives' );\n\n\t},\n\tsupportsCompressedTextureS3TC: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .supportsCompressedTextureS3TC() is now .extensions.get( \\'WEBGL_compressed_texture_s3tc\\' ).' );\n\t\treturn this.extensions.get( 'WEBGL_compressed_texture_s3tc' );\n\n\t},\n\tsupportsCompressedTexturePVRTC: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .supportsCompressedTexturePVRTC() is now .extensions.get( \\'WEBGL_compressed_texture_pvrtc\\' ).' );\n\t\treturn this.extensions.get( 'WEBGL_compressed_texture_pvrtc' );\n\n\t},\n\tsupportsBlendMinMax: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .supportsBlendMinMax() is now .extensions.get( \\'EXT_blend_minmax\\' ).' );\n\t\treturn this.extensions.get( 'EXT_blend_minmax' );\n\n\t},\n\tsupportsVertexTextures: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .supportsVertexTextures() is now .capabilities.vertexTextures.' );\n\t\treturn this.capabilities.vertexTextures;\n\n\t},\n\tsupportsInstancedArrays: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .supportsInstancedArrays() is now .extensions.get( \\'ANGLE_instanced_arrays\\' ).' );\n\t\treturn this.extensions.get( 'ANGLE_instanced_arrays' );\n\n\t},\n\tenableScissorTest: function ( boolean ) {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .enableScissorTest() is now .setScissorTest().' );\n\t\tthis.setScissorTest( boolean );\n\n\t},\n\tinitMaterial: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .initMaterial() has been removed.' );\n\n\t},\n\taddPrePlugin: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .addPrePlugin() has been removed.' );\n\n\t},\n\taddPostPlugin: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .addPostPlugin() has been removed.' );\n\n\t},\n\tupdateShadowMap: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .updateShadowMap() has been removed.' );\n\n\t},\n\tsetFaceCulling: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .setFaceCulling() has been removed.' );\n\n\t},\n\tallocTextureUnit: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .allocTextureUnit() has been removed.' );\n\n\t},\n\tsetTexture: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .setTexture() has been removed.' );\n\n\t},\n\tsetTexture2D: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .setTexture2D() has been removed.' );\n\n\t},\n\tsetTextureCube: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .setTextureCube() has been removed.' );\n\n\t},\n\tgetActiveMipMapLevel: function () {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer: .getActiveMipMapLevel() is now .getActiveMipmapLevel().' );\n\t\treturn this.getActiveMipmapLevel();\n\n\t}\n\n} );\n\nObject.defineProperties( WebGLRenderer.prototype, {\n\n\tshadowMapEnabled: {\n\t\tget: function () {\n\n\t\t\treturn this.shadowMap.enabled;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .shadowMapEnabled is now .shadowMap.enabled.' );\n\t\t\tthis.shadowMap.enabled = value;\n\n\t\t}\n\t},\n\tshadowMapType: {\n\t\tget: function () {\n\n\t\t\treturn this.shadowMap.type;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .shadowMapType is now .shadowMap.type.' );\n\t\t\tthis.shadowMap.type = value;\n\n\t\t}\n\t},\n\tshadowMapCullFace: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .shadowMapCullFace has been removed. Set Material.shadowSide instead.' );\n\t\t\treturn undefined;\n\n\t\t},\n\t\tset: function ( /* value */ ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .shadowMapCullFace has been removed. Set Material.shadowSide instead.' );\n\n\t\t}\n\t},\n\tcontext: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .context has been removed. Use .getContext() instead.' );\n\t\t\treturn this.getContext();\n\n\t\t}\n\t},\n\tvr: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .vr has been renamed to .xr' );\n\t\t\treturn this.xr;\n\n\t\t}\n\t},\n\tgammaInput: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .gammaInput has been removed. Set the encoding for textures via Texture.encoding instead.' );\n\t\t\treturn false;\n\n\t\t},\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .gammaInput has been removed. Set the encoding for textures via Texture.encoding instead.' );\n\n\t\t}\n\t},\n\tgammaOutput: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .gammaOutput has been removed. Set WebGLRenderer.outputEncoding instead.' );\n\t\t\treturn false;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .gammaOutput has been removed. Set WebGLRenderer.outputEncoding instead.' );\n\t\t\tthis.outputEncoding = ( value === true ) ? sRGBEncoding : LinearEncoding;\n\n\t\t}\n\t},\n\ttoneMappingWhitePoint: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .toneMappingWhitePoint has been removed.' );\n\t\t\treturn 1.0;\n\n\t\t},\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .toneMappingWhitePoint has been removed.' );\n\n\t\t}\n\t},\n\n} );\n\nObject.defineProperties( WebGLShadowMap.prototype, {\n\n\tcullFace: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .shadowMap.cullFace has been removed. Set Material.shadowSide instead.' );\n\t\t\treturn undefined;\n\n\t\t},\n\t\tset: function ( /* cullFace */ ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .shadowMap.cullFace has been removed. Set Material.shadowSide instead.' );\n\n\t\t}\n\t},\n\trenderReverseSided: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .shadowMap.renderReverseSided has been removed. Set Material.shadowSide instead.' );\n\t\t\treturn undefined;\n\n\t\t},\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .shadowMap.renderReverseSided has been removed. Set Material.shadowSide instead.' );\n\n\t\t}\n\t},\n\trenderSingleSided: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .shadowMap.renderSingleSided has been removed. Set Material.shadowSide instead.' );\n\t\t\treturn undefined;\n\n\t\t},\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: .shadowMap.renderSingleSided has been removed. Set Material.shadowSide instead.' );\n\n\t\t}\n\t}\n\n} );\n\nfunction WebGLRenderTargetCube( width, height, options ) {\n\n\tconsole.warn( 'THREE.WebGLRenderTargetCube( width, height, options ) is now WebGLCubeRenderTarget( size, options ).' );\n\treturn new WebGLCubeRenderTarget( width, options );\n\n}\n\n//\n\nObject.defineProperties( WebGLRenderTarget.prototype, {\n\n\twrapS: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .wrapS is now .texture.wrapS.' );\n\t\t\treturn this.texture.wrapS;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .wrapS is now .texture.wrapS.' );\n\t\t\tthis.texture.wrapS = value;\n\n\t\t}\n\t},\n\twrapT: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .wrapT is now .texture.wrapT.' );\n\t\t\treturn this.texture.wrapT;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .wrapT is now .texture.wrapT.' );\n\t\t\tthis.texture.wrapT = value;\n\n\t\t}\n\t},\n\tmagFilter: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .magFilter is now .texture.magFilter.' );\n\t\t\treturn this.texture.magFilter;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .magFilter is now .texture.magFilter.' );\n\t\t\tthis.texture.magFilter = value;\n\n\t\t}\n\t},\n\tminFilter: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .minFilter is now .texture.minFilter.' );\n\t\t\treturn this.texture.minFilter;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .minFilter is now .texture.minFilter.' );\n\t\t\tthis.texture.minFilter = value;\n\n\t\t}\n\t},\n\tanisotropy: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .anisotropy is now .texture.anisotropy.' );\n\t\t\treturn this.texture.anisotropy;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .anisotropy is now .texture.anisotropy.' );\n\t\t\tthis.texture.anisotropy = value;\n\n\t\t}\n\t},\n\toffset: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .offset is now .texture.offset.' );\n\t\t\treturn this.texture.offset;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .offset is now .texture.offset.' );\n\t\t\tthis.texture.offset = value;\n\n\t\t}\n\t},\n\trepeat: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .repeat is now .texture.repeat.' );\n\t\t\treturn this.texture.repeat;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .repeat is now .texture.repeat.' );\n\t\t\tthis.texture.repeat = value;\n\n\t\t}\n\t},\n\tformat: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .format is now .texture.format.' );\n\t\t\treturn this.texture.format;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .format is now .texture.format.' );\n\t\t\tthis.texture.format = value;\n\n\t\t}\n\t},\n\ttype: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .type is now .texture.type.' );\n\t\t\treturn this.texture.type;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .type is now .texture.type.' );\n\t\t\tthis.texture.type = value;\n\n\t\t}\n\t},\n\tgenerateMipmaps: {\n\t\tget: function () {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .generateMipmaps is now .texture.generateMipmaps.' );\n\t\t\treturn this.texture.generateMipmaps;\n\n\t\t},\n\t\tset: function ( value ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderTarget: .generateMipmaps is now .texture.generateMipmaps.' );\n\t\t\tthis.texture.generateMipmaps = value;\n\n\t\t}\n\t}\n\n} );\n\n//\n\nObject.defineProperties( Audio.prototype, {\n\n\tload: {\n\t\tvalue: function ( file ) {\n\n\t\t\tconsole.warn( 'THREE.Audio: .load has been deprecated. Use THREE.AudioLoader instead.' );\n\t\t\tconst scope = this;\n\t\t\tconst audioLoader = new AudioLoader();\n\t\t\taudioLoader.load( file, function ( buffer ) {\n\n\t\t\t\tscope.setBuffer( buffer );\n\n\t\t\t} );\n\t\t\treturn this;\n\n\t\t}\n\t},\n\tstartTime: {\n\t\tset: function () {\n\n\t\t\tconsole.warn( 'THREE.Audio: .startTime is now .play( delay ).' );\n\n\t\t}\n\t}\n\n} );\n\nAudioAnalyser.prototype.getData = function () {\n\n\tconsole.warn( 'THREE.AudioAnalyser: .getData() is now .getFrequencyData().' );\n\treturn this.getFrequencyData();\n\n};\n\n//\n\nCubeCamera.prototype.updateCubeMap = function ( renderer, scene ) {\n\n\tconsole.warn( 'THREE.CubeCamera: .updateCubeMap() is now .update().' );\n\treturn this.update( renderer, scene );\n\n};\n\nCubeCamera.prototype.clear = function ( renderer, color, depth, stencil ) {\n\n\tconsole.warn( 'THREE.CubeCamera: .clear() is now .renderTarget.clear().' );\n\treturn this.renderTarget.clear( renderer, color, depth, stencil );\n\n};\n\n//\n\nconst GeometryUtils = {\n\n\tmerge: function ( geometry1, geometry2, materialIndexOffset ) {\n\n\t\tconsole.warn( 'THREE.GeometryUtils: .merge() has been moved to Geometry. Use geometry.merge( geometry2, matrix, materialIndexOffset ) instead.' );\n\t\tlet matrix;\n\n\t\tif ( geometry2.isMesh ) {\n\n\t\t\tgeometry2.matrixAutoUpdate && geometry2.updateMatrix();\n\n\t\t\tmatrix = geometry2.matrix;\n\t\t\tgeometry2 = geometry2.geometry;\n\n\t\t}\n\n\t\tgeometry1.merge( geometry2, matrix, materialIndexOffset );\n\n\t},\n\n\tcenter: function ( geometry ) {\n\n\t\tconsole.warn( 'THREE.GeometryUtils: .center() has been moved to Geometry. Use geometry.center() instead.' );\n\t\treturn geometry.center();\n\n\t}\n\n};\n\nImageUtils.crossOrigin = undefined;\n\nImageUtils.loadTexture = function ( url, mapping, onLoad, onError ) {\n\n\tconsole.warn( 'THREE.ImageUtils.loadTexture has been deprecated. Use THREE.TextureLoader() instead.' );\n\n\tconst loader = new TextureLoader();\n\tloader.setCrossOrigin( this.crossOrigin );\n\n\tconst texture = loader.load( url, onLoad, undefined, onError );\n\n\tif ( mapping ) texture.mapping = mapping;\n\n\treturn texture;\n\n};\n\nImageUtils.loadTextureCube = function ( urls, mapping, onLoad, onError ) {\n\n\tconsole.warn( 'THREE.ImageUtils.loadTextureCube has been deprecated. Use THREE.CubeTextureLoader() instead.' );\n\n\tconst loader = new CubeTextureLoader();\n\tloader.setCrossOrigin( this.crossOrigin );\n\n\tconst texture = loader.load( urls, onLoad, undefined, onError );\n\n\tif ( mapping ) texture.mapping = mapping;\n\n\treturn texture;\n\n};\n\nImageUtils.loadCompressedTexture = function () {\n\n\tconsole.error( 'THREE.ImageUtils.loadCompressedTexture has been removed. Use THREE.DDSLoader instead.' );\n\n};\n\nImageUtils.loadCompressedTextureCube = function () {\n\n\tconsole.error( 'THREE.ImageUtils.loadCompressedTextureCube has been removed. Use THREE.DDSLoader instead.' );\n\n};\n\n//\n\nfunction CanvasRenderer() {\n\n\tconsole.error( 'THREE.CanvasRenderer has been removed' );\n\n}\n\n//\n\nfunction JSONLoader() {\n\n\tconsole.error( 'THREE.JSONLoader has been removed.' );\n\n}\n\n//\n\nconst SceneUtils = {\n\n\tcreateMultiMaterialObject: function ( /* geometry, materials */ ) {\n\n\t\tconsole.error( 'THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js' );\n\n\t},\n\n\tdetach: function ( /* child, parent, scene */ ) {\n\n\t\tconsole.error( 'THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js' );\n\n\t},\n\n\tattach: function ( /* child, scene, parent */ ) {\n\n\t\tconsole.error( 'THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js' );\n\n\t}\n\n};\n\n//\n\nfunction LensFlare() {\n\n\tconsole.error( 'THREE.LensFlare has been moved to /examples/jsm/objects/Lensflare.js' );\n\n}\n\nif ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {\n\n\t/* eslint-disable no-undef */\n\t__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'register', { detail: {\n\t\trevision: REVISION,\n\t} } ) );\n\t/* eslint-enable no-undef */\n\n}\n\nexport { ACESFilmicToneMapping, AddEquation, AddOperation, AdditiveAnimationBlendMode, AdditiveBlending, AlphaFormat, AlwaysDepth, AlwaysStencilFunc, AmbientLight, AmbientLightProbe, AnimationClip, AnimationLoader, AnimationMixer, AnimationObjectGroup, AnimationUtils, ArcCurve, ArrayCamera, ArrowHelper, Audio, AudioAnalyser, AudioContext, AudioListener, AudioLoader, AxesHelper, AxisHelper, BackSide, BasicDepthPacking, BasicShadowMap, BinaryTextureLoader, Bone, BooleanKeyframeTrack, BoundingBoxHelper, Box2, Box3, Box3Helper, BoxBufferGeometry, BoxGeometry, BoxHelper, BufferAttribute, BufferGeometry, BufferGeometryLoader, ByteType, Cache, Camera, CameraHelper, CanvasRenderer, CanvasTexture, CatmullRomCurve3, CineonToneMapping, CircleBufferGeometry, CircleGeometry, ClampToEdgeWrapping, Clock, ClosedSplineCurve3, Color, ColorKeyframeTrack, CompressedTexture, CompressedTextureLoader, ConeBufferGeometry, ConeGeometry, CubeCamera, BoxGeometry as CubeGeometry, CubeReflectionMapping, CubeRefractionMapping, CubeTexture, CubeTextureLoader, CubeUVReflectionMapping, CubeUVRefractionMapping, CubicBezierCurve, CubicBezierCurve3, CubicInterpolant, CullFaceBack, CullFaceFront, CullFaceFrontBack, CullFaceNone, Curve, CurvePath, CustomBlending, CustomToneMapping, CylinderBufferGeometry, CylinderGeometry, Cylindrical, DataTexture, DataTexture2DArray, DataTexture3D, DataTextureLoader, DataUtils, DecrementStencilOp, DecrementWrapStencilOp, DefaultLoadingManager, DepthFormat, DepthStencilFormat, DepthTexture, DirectionalLight, DirectionalLightHelper, DiscreteInterpolant, DodecahedronBufferGeometry, DodecahedronGeometry, DoubleSide, DstAlphaFactor, DstColorFactor, DynamicBufferAttribute, DynamicCopyUsage, DynamicDrawUsage, DynamicReadUsage, EdgesGeometry, EdgesHelper, EllipseCurve, EqualDepth, EqualStencilFunc, EquirectangularReflectionMapping, EquirectangularRefractionMapping, Euler, EventDispatcher, ExtrudeBufferGeometry, ExtrudeGeometry, Face3, Face4, FaceColors, FileLoader, FlatShading, Float16BufferAttribute, Float32Attribute, Float32BufferAttribute, Float64Attribute, Float64BufferAttribute, FloatType, Fog, FogExp2, Font, FontLoader, FrontSide, Frustum, GLBufferAttribute, GLSL1, GLSL3, GammaEncoding, Geometry, GeometryUtils, GreaterDepth, GreaterEqualDepth, GreaterEqualStencilFunc, GreaterStencilFunc, GridHelper, Group, HalfFloatType, HemisphereLight, HemisphereLightHelper, HemisphereLightProbe, IcosahedronBufferGeometry, IcosahedronGeometry, ImageBitmapLoader, ImageLoader, ImageUtils, ImmediateRenderObject, IncrementStencilOp, IncrementWrapStencilOp, InstancedBufferAttribute, InstancedBufferGeometry, InstancedInterleavedBuffer, InstancedMesh, Int16Attribute, Int16BufferAttribute, Int32Attribute, Int32BufferAttribute, Int8Attribute, Int8BufferAttribute, IntType, InterleavedBuffer, InterleavedBufferAttribute, Interpolant, InterpolateDiscrete, InterpolateLinear, InterpolateSmooth, InvertStencilOp, JSONLoader, KeepStencilOp, KeyframeTrack, LOD, LatheBufferGeometry, LatheGeometry, Layers, LensFlare, LessDepth, LessEqualDepth, LessEqualStencilFunc, LessStencilFunc, Light, LightProbe, Line, Line3, LineBasicMaterial, LineCurve, LineCurve3, LineDashedMaterial, LineLoop, LinePieces, LineSegments, LineStrip, LinearEncoding, LinearFilter, LinearInterpolant, LinearMipMapLinearFilter, LinearMipMapNearestFilter, LinearMipmapLinearFilter, LinearMipmapNearestFilter, LinearToneMapping, Loader, LoaderUtils, LoadingManager, LogLuvEncoding, LoopOnce, LoopPingPong, LoopRepeat, LuminanceAlphaFormat, LuminanceFormat, MOUSE, Material, MaterialLoader, MathUtils as Math, MathUtils, Matrix3, Matrix4, MaxEquation, Mesh, MeshBasicMaterial, MeshDepthMaterial, MeshDistanceMaterial, MeshFaceMaterial, MeshLambertMaterial, MeshMatcapMaterial, MeshNormalMaterial, MeshPhongMaterial, MeshPhysicalMaterial, MeshStandardMaterial, MeshToonMaterial, MinEquation, MirroredRepeatWrapping, MixOperation, MultiMaterial, MultiplyBlending, MultiplyOperation, NearestFilter, NearestMipMapLinearFilter, NearestMipMapNearestFilter, NearestMipmapLinearFilter, NearestMipmapNearestFilter, NeverDepth, NeverStencilFunc, NoBlending, NoColors, NoToneMapping, NormalAnimationBlendMode, NormalBlending, NotEqualDepth, NotEqualStencilFunc, NumberKeyframeTrack, Object3D, ObjectLoader, ObjectSpaceNormalMap, OctahedronBufferGeometry, OctahedronGeometry, OneFactor, OneMinusDstAlphaFactor, OneMinusDstColorFactor, OneMinusSrcAlphaFactor, OneMinusSrcColorFactor, OrthographicCamera, PCFShadowMap, PCFSoftShadowMap, PMREMGenerator, ParametricBufferGeometry, ParametricGeometry, Particle, ParticleBasicMaterial, ParticleSystem, ParticleSystemMaterial, Path, PerspectiveCamera, Plane, PlaneBufferGeometry, PlaneGeometry, PlaneHelper, PointCloud, PointCloudMaterial, PointLight, PointLightHelper, Points, PointsMaterial, PolarGridHelper, PolyhedronBufferGeometry, PolyhedronGeometry, PositionalAudio, PropertyBinding, PropertyMixer, QuadraticBezierCurve, QuadraticBezierCurve3, Quaternion, QuaternionKeyframeTrack, QuaternionLinearInterpolant, REVISION, RGBADepthPacking, RGBAFormat, RGBAIntegerFormat, RGBA_ASTC_10x10_Format, RGBA_ASTC_10x5_Format, RGBA_ASTC_10x6_Format, RGBA_ASTC_10x8_Format, RGBA_ASTC_12x10_Format, RGBA_ASTC_12x12_Format, RGBA_ASTC_4x4_Format, RGBA_ASTC_5x4_Format, RGBA_ASTC_5x5_Format, RGBA_ASTC_6x5_Format, RGBA_ASTC_6x6_Format, RGBA_ASTC_8x5_Format, RGBA_ASTC_8x6_Format, RGBA_ASTC_8x8_Format, RGBA_BPTC_Format, RGBA_ETC2_EAC_Format, RGBA_PVRTC_2BPPV1_Format, RGBA_PVRTC_4BPPV1_Format, RGBA_S3TC_DXT1_Format, RGBA_S3TC_DXT3_Format, RGBA_S3TC_DXT5_Format, RGBDEncoding, RGBEEncoding, RGBEFormat, RGBFormat, RGBIntegerFormat, RGBM16Encoding, RGBM7Encoding, RGB_ETC1_Format, RGB_ETC2_Format, RGB_PVRTC_2BPPV1_Format, RGB_PVRTC_4BPPV1_Format, RGB_S3TC_DXT1_Format, RGFormat, RGIntegerFormat, RawShaderMaterial, Ray, Raycaster, RectAreaLight, RedFormat, RedIntegerFormat, ReinhardToneMapping, RepeatWrapping, ReplaceStencilOp, ReverseSubtractEquation, RingBufferGeometry, RingGeometry, SRGB8_ALPHA8_ASTC_10x10_Format, SRGB8_ALPHA8_ASTC_10x5_Format, SRGB8_ALPHA8_ASTC_10x6_Format, SRGB8_ALPHA8_ASTC_10x8_Format, SRGB8_ALPHA8_ASTC_12x10_Format, SRGB8_ALPHA8_ASTC_12x12_Format, SRGB8_ALPHA8_ASTC_4x4_Format, SRGB8_ALPHA8_ASTC_5x4_Format, SRGB8_ALPHA8_ASTC_5x5_Format, SRGB8_ALPHA8_ASTC_6x5_Format, SRGB8_ALPHA8_ASTC_6x6_Format, SRGB8_ALPHA8_ASTC_8x5_Format, SRGB8_ALPHA8_ASTC_8x6_Format, SRGB8_ALPHA8_ASTC_8x8_Format, Scene, SceneUtils, ShaderChunk, ShaderLib, ShaderMaterial, ShadowMaterial, Shape, ShapeBufferGeometry, ShapeGeometry, ShapePath, ShapeUtils, ShortType, Skeleton, SkeletonHelper, SkinnedMesh, SmoothShading, Sphere, SphereBufferGeometry, SphereGeometry, Spherical, SphericalHarmonics3, Spline, SplineCurve, SplineCurve3, SpotLight, SpotLightHelper, Sprite, SpriteMaterial, SrcAlphaFactor, SrcAlphaSaturateFactor, SrcColorFactor, StaticCopyUsage, StaticDrawUsage, StaticReadUsage, StereoCamera, StreamCopyUsage, StreamDrawUsage, StreamReadUsage, StringKeyframeTrack, SubtractEquation, SubtractiveBlending, TOUCH, TangentSpaceNormalMap, TetrahedronBufferGeometry, TetrahedronGeometry, TextBufferGeometry, TextGeometry, Texture, TextureLoader, TorusBufferGeometry, TorusGeometry, TorusKnotBufferGeometry, TorusKnotGeometry, Triangle, TriangleFanDrawMode, TriangleStripDrawMode, TrianglesDrawMode, TubeBufferGeometry, TubeGeometry, UVMapping, Uint16Attribute, Uint16BufferAttribute, Uint32Attribute, Uint32BufferAttribute, Uint8Attribute, Uint8BufferAttribute, Uint8ClampedAttribute, Uint8ClampedBufferAttribute, Uniform, UniformsLib, UniformsUtils, UnsignedByteType, UnsignedInt248Type, UnsignedIntType, UnsignedShort4444Type, UnsignedShort5551Type, UnsignedShort565Type, UnsignedShortType, VSMShadowMap, Vector2, Vector3, Vector4, VectorKeyframeTrack, Vertex, VertexColors, VideoTexture, WebGL1Renderer, WebGLCubeRenderTarget, WebGLMultisampleRenderTarget, WebGLRenderTarget, WebGLRenderTargetCube, WebGLRenderer, WebGLUtils, WireframeGeometry, WireframeHelper, WrapAroundEnding, XHRLoader, ZeroCurvatureEnding, ZeroFactor, ZeroSlopeEnding, ZeroStencilOp, sRGBEncoding };\n","import {\n\tEventDispatcher,\n\tMOUSE,\n\tQuaternion,\n\tSpherical,\n\tTOUCH,\n\tVector2,\n\tVector3\n} from '../../../build/three.module.js';\n\n// This set of controls performs orbiting, dollying (zooming), and panning.\n// Unlike TrackballControls, it maintains the \"up\" direction object.up (+Y by default).\n//\n//    Orbit - left mouse / touch: one-finger move\n//    Zoom - middle mouse, or mousewheel / touch: two-finger spread or squish\n//    Pan - right mouse, or left mouse + ctrl/meta/shiftKey, or arrow keys / touch: two-finger move\n\nvar OrbitControls = function ( object, domElement ) {\n\n\tif ( domElement === undefined ) console.warn( 'THREE.OrbitControls: The second parameter \"domElement\" is now mandatory.' );\n\tif ( domElement === document ) console.error( 'THREE.OrbitControls: \"document\" should not be used as the target \"domElement\". Please use \"renderer.domElement\" instead.' );\n\n\tthis.object = object;\n\tthis.domElement = domElement;\n\n\t// Set to false to disable this control\n\tthis.enabled = true;\n\n\t// \"target\" sets the location of focus, where the object orbits around\n\tthis.target = new Vector3();\n\n\t// How far you can dolly in and out ( PerspectiveCamera only )\n\tthis.minDistance = 0;\n\tthis.maxDistance = Infinity;\n\n\t// How far you can zoom in and out ( OrthographicCamera only )\n\tthis.minZoom = 0;\n\tthis.maxZoom = Infinity;\n\n\t// How far you can orbit vertically, upper and lower limits.\n\t// Range is 0 to Math.PI radians.\n\tthis.minPolarAngle = 0; // radians\n\tthis.maxPolarAngle = Math.PI; // radians\n\n\t// How far you can orbit horizontally, upper and lower limits.\n\t// If set, the interval [ min, max ] must be a sub-interval of [ - 2 PI, 2 PI ], with ( max - min < 2 PI )\n\tthis.minAzimuthAngle = - Infinity; // radians\n\tthis.maxAzimuthAngle = Infinity; // radians\n\n\t// Set to true to enable damping (inertia)\n\t// If damping is enabled, you must call controls.update() in your animation loop\n\tthis.enableDamping = false;\n\tthis.dampingFactor = 0.05;\n\n\t// This option actually enables dollying in and out; left as \"zoom\" for backwards compatibility.\n\t// Set to false to disable zooming\n\tthis.enableZoom = true;\n\tthis.zoomSpeed = 1.0;\n\n\t// Set to false to disable rotating\n\tthis.enableRotate = true;\n\tthis.rotateSpeed = 1.0;\n\n\t// Set to false to disable panning\n\tthis.enablePan = true;\n\tthis.panSpeed = 1.0;\n\tthis.screenSpacePanning = true; // if false, pan orthogonal to world-space direction camera.up\n\tthis.keyPanSpeed = 7.0;\t// pixels moved per arrow key push\n\n\t// Set to true to automatically rotate around the target\n\t// If auto-rotate is enabled, you must call controls.update() in your animation loop\n\tthis.autoRotate = false;\n\tthis.autoRotateSpeed = 2.0; // 30 seconds per round when fps is 60\n\n\t// Set to false to disable use of the keys\n\tthis.enableKeys = true;\n\n\t// The four arrow keys\n\tthis.keys = { LEFT: 37, UP: 38, RIGHT: 39, BOTTOM: 40 };\n\n\t// Mouse buttons\n\tthis.mouseButtons = { LEFT: MOUSE.ROTATE, MIDDLE: MOUSE.DOLLY, RIGHT: MOUSE.PAN };\n\n\t// Touch fingers\n\tthis.touches = { ONE: TOUCH.ROTATE, TWO: TOUCH.DOLLY_PAN };\n\n\t// for reset\n\tthis.target0 = this.target.clone();\n\tthis.position0 = this.object.position.clone();\n\tthis.zoom0 = this.object.zoom;\n\n\t//\n\t// public methods\n\t//\n\n\tthis.getPolarAngle = function () {\n\n\t\treturn spherical.phi;\n\n\t};\n\n\tthis.getAzimuthalAngle = function () {\n\n\t\treturn spherical.theta;\n\n\t};\n\n\tthis.saveState = function () {\n\n\t\tscope.target0.copy( scope.target );\n\t\tscope.position0.copy( scope.object.position );\n\t\tscope.zoom0 = scope.object.zoom;\n\n\t};\n\n\tthis.reset = function () {\n\n\t\tscope.target.copy( scope.target0 );\n\t\tscope.object.position.copy( scope.position0 );\n\t\tscope.object.zoom = scope.zoom0;\n\n\t\tscope.object.updateProjectionMatrix();\n\t\tscope.dispatchEvent( changeEvent );\n\n\t\tscope.update();\n\n\t\tstate = STATE.NONE;\n\n\t};\n\n\t// this method is exposed, but perhaps it would be better if we can make it private...\n\tthis.update = function () {\n\n\t\tvar offset = new Vector3();\n\n\t\t// so camera.up is the orbit axis\n\t\tvar quat = new Quaternion().setFromUnitVectors( object.up, new Vector3( 0, 1, 0 ) );\n\t\tvar quatInverse = quat.clone().invert();\n\n\t\tvar lastPosition = new Vector3();\n\t\tvar lastQuaternion = new Quaternion();\n\n\t\tvar twoPI = 2 * Math.PI;\n\n\t\treturn function update() {\n\n\t\t\tvar position = scope.object.position;\n\n\t\t\toffset.copy( position ).sub( scope.target );\n\n\t\t\t// rotate offset to \"y-axis-is-up\" space\n\t\t\toffset.applyQuaternion( quat );\n\n\t\t\t// angle from z-axis around y-axis\n\t\t\tspherical.setFromVector3( offset );\n\n\t\t\tif ( scope.autoRotate && state === STATE.NONE ) {\n\n\t\t\t\trotateLeft( getAutoRotationAngle() );\n\n\t\t\t}\n\n\t\t\tif ( scope.enableDamping ) {\n\n\t\t\t\tspherical.theta += sphericalDelta.theta * scope.dampingFactor;\n\t\t\t\tspherical.phi += sphericalDelta.phi * scope.dampingFactor;\n\n\t\t\t} else {\n\n\t\t\t\tspherical.theta += sphericalDelta.theta;\n\t\t\t\tspherical.phi += sphericalDelta.phi;\n\n\t\t\t}\n\n\t\t\t// restrict theta to be between desired limits\n\n\t\t\tvar min = scope.minAzimuthAngle;\n\t\t\tvar max = scope.maxAzimuthAngle;\n\n\t\t\tif ( isFinite( min ) && isFinite( max ) ) {\n\n\t\t\t\tif ( min < - Math.PI ) min += twoPI; else if ( min > Math.PI ) min -= twoPI;\n\n\t\t\t\tif ( max < - Math.PI ) max += twoPI; else if ( max > Math.PI ) max -= twoPI;\n\n\t\t\t\tif ( min <= max ) {\n\n\t\t\t\t\tspherical.theta = Math.max( min, Math.min( max, spherical.theta ) );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tspherical.theta = ( spherical.theta > ( min + max ) / 2 ) ?\n\t\t\t\t\t\tMath.max( min, spherical.theta ) :\n\t\t\t\t\t\tMath.min( max, spherical.theta );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// restrict phi to be between desired limits\n\t\t\tspherical.phi = Math.max( scope.minPolarAngle, Math.min( scope.maxPolarAngle, spherical.phi ) );\n\n\t\t\tspherical.makeSafe();\n\n\n\t\t\tspherical.radius *= scale;\n\n\t\t\t// restrict radius to be between desired limits\n\t\t\tspherical.radius = Math.max( scope.minDistance, Math.min( scope.maxDistance, spherical.radius ) );\n\n\t\t\t// move target to panned location\n\n\t\t\tif ( scope.enableDamping === true ) {\n\n\t\t\t\tscope.target.addScaledVector( panOffset, scope.dampingFactor );\n\n\t\t\t} else {\n\n\t\t\t\tscope.target.add( panOffset );\n\n\t\t\t}\n\n\t\t\toffset.setFromSpherical( spherical );\n\n\t\t\t// rotate offset back to \"camera-up-vector-is-up\" space\n\t\t\toffset.applyQuaternion( quatInverse );\n\n\t\t\tposition.copy( scope.target ).add( offset );\n\n\t\t\tscope.object.lookAt( scope.target );\n\n\t\t\tif ( scope.enableDamping === true ) {\n\n\t\t\t\tsphericalDelta.theta *= ( 1 - scope.dampingFactor );\n\t\t\t\tsphericalDelta.phi *= ( 1 - scope.dampingFactor );\n\n\t\t\t\tpanOffset.multiplyScalar( 1 - scope.dampingFactor );\n\n\t\t\t} else {\n\n\t\t\t\tsphericalDelta.set( 0, 0, 0 );\n\n\t\t\t\tpanOffset.set( 0, 0, 0 );\n\n\t\t\t}\n\n\t\t\tscale = 1;\n\n\t\t\t// update condition is:\n\t\t\t// min(camera displacement, camera rotation in radians)^2 > EPS\n\t\t\t// using small-angle approximation cos(x/2) = 1 - x^2 / 8\n\n\t\t\tif ( zoomChanged ||\n\t\t\t\tlastPosition.distanceToSquared( scope.object.position ) > EPS ||\n\t\t\t\t8 * ( 1 - lastQuaternion.dot( scope.object.quaternion ) ) > EPS ) {\n\n\t\t\t\tscope.dispatchEvent( changeEvent );\n\n\t\t\t\tlastPosition.copy( scope.object.position );\n\t\t\t\tlastQuaternion.copy( scope.object.quaternion );\n\t\t\t\tzoomChanged = false;\n\n\t\t\t\treturn true;\n\n\t\t\t}\n\n\t\t\treturn false;\n\n\t\t};\n\n\t}();\n\n\tthis.dispose = function () {\n\n\t\tscope.domElement.removeEventListener( 'contextmenu', onContextMenu, false );\n\n\t\tscope.domElement.removeEventListener( 'pointerdown', onPointerDown, false );\n\t\tscope.domElement.removeEventListener( 'wheel', onMouseWheel, false );\n\n\t\tscope.domElement.removeEventListener( 'touchstart', onTouchStart, false );\n\t\tscope.domElement.removeEventListener( 'touchend', onTouchEnd, false );\n\t\tscope.domElement.removeEventListener( 'touchmove', onTouchMove, false );\n\n\t\tscope.domElement.ownerDocument.removeEventListener( 'pointermove', onPointerMove, false );\n\t\tscope.domElement.ownerDocument.removeEventListener( 'pointerup', onPointerUp, false );\n\n\t\tscope.domElement.removeEventListener( 'keydown', onKeyDown, false );\n\n\t\t//scope.dispatchEvent( { type: 'dispose' } ); // should this be added here?\n\n\t};\n\n\t//\n\t// internals\n\t//\n\n\tvar scope = this;\n\n\tvar changeEvent = { type: 'change' };\n\tvar startEvent = { type: 'start' };\n\tvar endEvent = { type: 'end' };\n\n\tvar STATE = {\n\t\tNONE: - 1,\n\t\tROTATE: 0,\n\t\tDOLLY: 1,\n\t\tPAN: 2,\n\t\tTOUCH_ROTATE: 3,\n\t\tTOUCH_PAN: 4,\n\t\tTOUCH_DOLLY_PAN: 5,\n\t\tTOUCH_DOLLY_ROTATE: 6\n\t};\n\n\tvar state = STATE.NONE;\n\n\tvar EPS = 0.000001;\n\n\t// current position in spherical coordinates\n\tvar spherical = new Spherical();\n\tvar sphericalDelta = new Spherical();\n\n\tvar scale = 1;\n\tvar panOffset = new Vector3();\n\tvar zoomChanged = false;\n\n\tvar rotateStart = new Vector2();\n\tvar rotateEnd = new Vector2();\n\tvar rotateDelta = new Vector2();\n\n\tvar panStart = new Vector2();\n\tvar panEnd = new Vector2();\n\tvar panDelta = new Vector2();\n\n\tvar dollyStart = new Vector2();\n\tvar dollyEnd = new Vector2();\n\tvar dollyDelta = new Vector2();\n\n\tfunction getAutoRotationAngle() {\n\n\t\treturn 2 * Math.PI / 60 / 60 * scope.autoRotateSpeed;\n\n\t}\n\n\tfunction getZoomScale() {\n\n\t\treturn Math.pow( 0.95, scope.zoomSpeed );\n\n\t}\n\n\tfunction rotateLeft( angle ) {\n\n\t\tsphericalDelta.theta -= angle;\n\n\t}\n\n\tfunction rotateUp( angle ) {\n\n\t\tsphericalDelta.phi -= angle;\n\n\t}\n\n\tvar panLeft = function () {\n\n\t\tvar v = new Vector3();\n\n\t\treturn function panLeft( distance, objectMatrix ) {\n\n\t\t\tv.setFromMatrixColumn( objectMatrix, 0 ); // get X column of objectMatrix\n\t\t\tv.multiplyScalar( - distance );\n\n\t\t\tpanOffset.add( v );\n\n\t\t};\n\n\t}();\n\n\tvar panUp = function () {\n\n\t\tvar v = new Vector3();\n\n\t\treturn function panUp( distance, objectMatrix ) {\n\n\t\t\tif ( scope.screenSpacePanning === true ) {\n\n\t\t\t\tv.setFromMatrixColumn( objectMatrix, 1 );\n\n\t\t\t} else {\n\n\t\t\t\tv.setFromMatrixColumn( objectMatrix, 0 );\n\t\t\t\tv.crossVectors( scope.object.up, v );\n\n\t\t\t}\n\n\t\t\tv.multiplyScalar( distance );\n\n\t\t\tpanOffset.add( v );\n\n\t\t};\n\n\t}();\n\n\t// deltaX and deltaY are in pixels; right and down are positive\n\tvar pan = function () {\n\n\t\tvar offset = new Vector3();\n\n\t\treturn function pan( deltaX, deltaY ) {\n\n\t\t\tvar element = scope.domElement;\n\n\t\t\tif ( scope.object.isPerspectiveCamera ) {\n\n\t\t\t\t// perspective\n\t\t\t\tvar position = scope.object.position;\n\t\t\t\toffset.copy( position ).sub( scope.target );\n\t\t\t\tvar targetDistance = offset.length();\n\n\t\t\t\t// half of the fov is center to top of screen\n\t\t\t\ttargetDistance *= Math.tan( ( scope.object.fov / 2 ) * Math.PI / 180.0 );\n\n\t\t\t\t// we use only clientHeight here so aspect ratio does not distort speed\n\t\t\t\tpanLeft( 2 * deltaX * targetDistance / element.clientHeight, scope.object.matrix );\n\t\t\t\tpanUp( 2 * deltaY * targetDistance / element.clientHeight, scope.object.matrix );\n\n\t\t\t} else if ( scope.object.isOrthographicCamera ) {\n\n\t\t\t\t// orthographic\n\t\t\t\tpanLeft( deltaX * ( scope.object.right - scope.object.left ) / scope.object.zoom / element.clientWidth, scope.object.matrix );\n\t\t\t\tpanUp( deltaY * ( scope.object.top - scope.object.bottom ) / scope.object.zoom / element.clientHeight, scope.object.matrix );\n\n\t\t\t} else {\n\n\t\t\t\t// camera neither orthographic nor perspective\n\t\t\t\tconsole.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - pan disabled.' );\n\t\t\t\tscope.enablePan = false;\n\n\t\t\t}\n\n\t\t};\n\n\t}();\n\n\tfunction dollyOut( dollyScale ) {\n\n\t\tif ( scope.object.isPerspectiveCamera ) {\n\n\t\t\tscale /= dollyScale;\n\n\t\t} else if ( scope.object.isOrthographicCamera ) {\n\n\t\t\tscope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom * dollyScale ) );\n\t\t\tscope.object.updateProjectionMatrix();\n\t\t\tzoomChanged = true;\n\n\t\t} else {\n\n\t\t\tconsole.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );\n\t\t\tscope.enableZoom = false;\n\n\t\t}\n\n\t}\n\n\tfunction dollyIn( dollyScale ) {\n\n\t\tif ( scope.object.isPerspectiveCamera ) {\n\n\t\t\tscale *= dollyScale;\n\n\t\t} else if ( scope.object.isOrthographicCamera ) {\n\n\t\t\tscope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom / dollyScale ) );\n\t\t\tscope.object.updateProjectionMatrix();\n\t\t\tzoomChanged = true;\n\n\t\t} else {\n\n\t\t\tconsole.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );\n\t\t\tscope.enableZoom = false;\n\n\t\t}\n\n\t}\n\n\t//\n\t// event callbacks - update the object state\n\t//\n\n\tfunction handleMouseDownRotate( event ) {\n\n\t\trotateStart.set( event.clientX, event.clientY );\n\n\t}\n\n\tfunction handleMouseDownDolly( event ) {\n\n\t\tdollyStart.set( event.clientX, event.clientY );\n\n\t}\n\n\tfunction handleMouseDownPan( event ) {\n\n\t\tpanStart.set( event.clientX, event.clientY );\n\n\t}\n\n\tfunction handleMouseMoveRotate( event ) {\n\n\t\trotateEnd.set( event.clientX, event.clientY );\n\n\t\trotateDelta.subVectors( rotateEnd, rotateStart ).multiplyScalar( scope.rotateSpeed );\n\n\t\tvar element = scope.domElement;\n\n\t\trotateLeft( 2 * Math.PI * rotateDelta.x / element.clientHeight ); // yes, height\n\n\t\trotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight );\n\n\t\trotateStart.copy( rotateEnd );\n\n\t\tscope.update();\n\n\t}\n\n\tfunction handleMouseMoveDolly( event ) {\n\n\t\tdollyEnd.set( event.clientX, event.clientY );\n\n\t\tdollyDelta.subVectors( dollyEnd, dollyStart );\n\n\t\tif ( dollyDelta.y > 0 ) {\n\n\t\t\tdollyOut( getZoomScale() );\n\n\t\t} else if ( dollyDelta.y < 0 ) {\n\n\t\t\tdollyIn( getZoomScale() );\n\n\t\t}\n\n\t\tdollyStart.copy( dollyEnd );\n\n\t\tscope.update();\n\n\t}\n\n\tfunction handleMouseMovePan( event ) {\n\n\t\tpanEnd.set( event.clientX, event.clientY );\n\n\t\tpanDelta.subVectors( panEnd, panStart ).multiplyScalar( scope.panSpeed );\n\n\t\tpan( panDelta.x, panDelta.y );\n\n\t\tpanStart.copy( panEnd );\n\n\t\tscope.update();\n\n\t}\n\n\tfunction handleMouseUp( /*event*/ ) {\n\n\t\t// no-op\n\n\t}\n\n\tfunction handleMouseWheel( event ) {\n\n\t\tif ( event.deltaY < 0 ) {\n\n\t\t\tdollyIn( getZoomScale() );\n\n\t\t} else if ( event.deltaY > 0 ) {\n\n\t\t\tdollyOut( getZoomScale() );\n\n\t\t}\n\n\t\tscope.update();\n\n\t}\n\n\tfunction handleKeyDown( event ) {\n\n\t\tvar needsUpdate = false;\n\n\t\tswitch ( event.keyCode ) {\n\n\t\t\tcase scope.keys.UP:\n\t\t\t\tpan( 0, scope.keyPanSpeed );\n\t\t\t\tneedsUpdate = true;\n\t\t\t\tbreak;\n\n\t\t\tcase scope.keys.BOTTOM:\n\t\t\t\tpan( 0, - scope.keyPanSpeed );\n\t\t\t\tneedsUpdate = true;\n\t\t\t\tbreak;\n\n\t\t\tcase scope.keys.LEFT:\n\t\t\t\tpan( scope.keyPanSpeed, 0 );\n\t\t\t\tneedsUpdate = true;\n\t\t\t\tbreak;\n\n\t\t\tcase scope.keys.RIGHT:\n\t\t\t\tpan( - scope.keyPanSpeed, 0 );\n\t\t\t\tneedsUpdate = true;\n\t\t\t\tbreak;\n\n\t\t}\n\n\t\tif ( needsUpdate ) {\n\n\t\t\t// prevent the browser from scrolling on cursor keys\n\t\t\tevent.preventDefault();\n\n\t\t\tscope.update();\n\n\t\t}\n\n\n\t}\n\n\tfunction handleTouchStartRotate( event ) {\n\n\t\tif ( event.touches.length == 1 ) {\n\n\t\t\trotateStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );\n\n\t\t} else {\n\n\t\t\tvar x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );\n\t\t\tvar y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );\n\n\t\t\trotateStart.set( x, y );\n\n\t\t}\n\n\t}\n\n\tfunction handleTouchStartPan( event ) {\n\n\t\tif ( event.touches.length == 1 ) {\n\n\t\t\tpanStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );\n\n\t\t} else {\n\n\t\t\tvar x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );\n\t\t\tvar y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );\n\n\t\t\tpanStart.set( x, y );\n\n\t\t}\n\n\t}\n\n\tfunction handleTouchStartDolly( event ) {\n\n\t\tvar dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;\n\t\tvar dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;\n\n\t\tvar distance = Math.sqrt( dx * dx + dy * dy );\n\n\t\tdollyStart.set( 0, distance );\n\n\t}\n\n\tfunction handleTouchStartDollyPan( event ) {\n\n\t\tif ( scope.enableZoom ) handleTouchStartDolly( event );\n\n\t\tif ( scope.enablePan ) handleTouchStartPan( event );\n\n\t}\n\n\tfunction handleTouchStartDollyRotate( event ) {\n\n\t\tif ( scope.enableZoom ) handleTouchStartDolly( event );\n\n\t\tif ( scope.enableRotate ) handleTouchStartRotate( event );\n\n\t}\n\n\tfunction handleTouchMoveRotate( event ) {\n\n\t\tif ( event.touches.length == 1 ) {\n\n\t\t\trotateEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );\n\n\t\t} else {\n\n\t\t\tvar x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );\n\t\t\tvar y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );\n\n\t\t\trotateEnd.set( x, y );\n\n\t\t}\n\n\t\trotateDelta.subVectors( rotateEnd, rotateStart ).multiplyScalar( scope.rotateSpeed );\n\n\t\tvar element = scope.domElement;\n\n\t\trotateLeft( 2 * Math.PI * rotateDelta.x / element.clientHeight ); // yes, height\n\n\t\trotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight );\n\n\t\trotateStart.copy( rotateEnd );\n\n\t}\n\n\tfunction handleTouchMovePan( event ) {\n\n\t\tif ( event.touches.length == 1 ) {\n\n\t\t\tpanEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );\n\n\t\t} else {\n\n\t\t\tvar x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );\n\t\t\tvar y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );\n\n\t\t\tpanEnd.set( x, y );\n\n\t\t}\n\n\t\tpanDelta.subVectors( panEnd, panStart ).multiplyScalar( scope.panSpeed );\n\n\t\tpan( panDelta.x, panDelta.y );\n\n\t\tpanStart.copy( panEnd );\n\n\t}\n\n\tfunction handleTouchMoveDolly( event ) {\n\n\t\tvar dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;\n\t\tvar dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;\n\n\t\tvar distance = Math.sqrt( dx * dx + dy * dy );\n\n\t\tdollyEnd.set( 0, distance );\n\n\t\tdollyDelta.set( 0, Math.pow( dollyEnd.y / dollyStart.y, scope.zoomSpeed ) );\n\n\t\tdollyOut( dollyDelta.y );\n\n\t\tdollyStart.copy( dollyEnd );\n\n\t}\n\n\tfunction handleTouchMoveDollyPan( event ) {\n\n\t\tif ( scope.enableZoom ) handleTouchMoveDolly( event );\n\n\t\tif ( scope.enablePan ) handleTouchMovePan( event );\n\n\t}\n\n\tfunction handleTouchMoveDollyRotate( event ) {\n\n\t\tif ( scope.enableZoom ) handleTouchMoveDolly( event );\n\n\t\tif ( scope.enableRotate ) handleTouchMoveRotate( event );\n\n\t}\n\n\tfunction handleTouchEnd( /*event*/ ) {\n\n\t\t// no-op\n\n\t}\n\n\t//\n\t// event handlers - FSM: listen for events and reset state\n\t//\n\n\tfunction onPointerDown( event ) {\n\n\t\tif ( scope.enabled === false ) return;\n\n\t\tswitch ( event.pointerType ) {\n\n\t\t\tcase 'mouse':\n\t\t\tcase 'pen':\n\t\t\t\tonMouseDown( event );\n\t\t\t\tbreak;\n\n\t\t\t// TODO touch\n\n\t\t}\n\n\t}\n\n\tfunction onPointerMove( event ) {\n\n\t\tif ( scope.enabled === false ) return;\n\n\t\tswitch ( event.pointerType ) {\n\n\t\t\tcase 'mouse':\n\t\t\tcase 'pen':\n\t\t\t\tonMouseMove( event );\n\t\t\t\tbreak;\n\n\t\t\t// TODO touch\n\n\t\t}\n\n\t}\n\n\tfunction onPointerUp( event ) {\n\n\t\tswitch ( event.pointerType ) {\n\n\t\t\tcase 'mouse':\n\t\t\tcase 'pen':\n\t\t\t\tonMouseUp( event );\n\t\t\t\tbreak;\n\n\t\t\t// TODO touch\n\n\t\t}\n\n\t}\n\n\tfunction onMouseDown( event ) {\n\n\t\t// Prevent the browser from scrolling.\n\t\tevent.preventDefault();\n\n\t\t// Manually set the focus since calling preventDefault above\n\t\t// prevents the browser from setting it automatically.\n\n\t\tscope.domElement.focus ? scope.domElement.focus() : window.focus();\n\n\t\tvar mouseAction;\n\n\t\tswitch ( event.button ) {\n\n\t\t\tcase 0:\n\n\t\t\t\tmouseAction = scope.mouseButtons.LEFT;\n\t\t\t\tbreak;\n\n\t\t\tcase 1:\n\n\t\t\t\tmouseAction = scope.mouseButtons.MIDDLE;\n\t\t\t\tbreak;\n\n\t\t\tcase 2:\n\n\t\t\t\tmouseAction = scope.mouseButtons.RIGHT;\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\n\t\t\t\tmouseAction = - 1;\n\n\t\t}\n\n\t\tswitch ( mouseAction ) {\n\n\t\t\tcase MOUSE.DOLLY:\n\n\t\t\t\tif ( scope.enableZoom === false ) return;\n\n\t\t\t\thandleMouseDownDolly( event );\n\n\t\t\t\tstate = STATE.DOLLY;\n\n\t\t\t\tbreak;\n\n\t\t\tcase MOUSE.ROTATE:\n\n\t\t\t\tif ( event.ctrlKey || event.metaKey || event.shiftKey ) {\n\n\t\t\t\t\tif ( scope.enablePan === false ) return;\n\n\t\t\t\t\thandleMouseDownPan( event );\n\n\t\t\t\t\tstate = STATE.PAN;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tif ( scope.enableRotate === false ) return;\n\n\t\t\t\t\thandleMouseDownRotate( event );\n\n\t\t\t\t\tstate = STATE.ROTATE;\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tcase MOUSE.PAN:\n\n\t\t\t\tif ( event.ctrlKey || event.metaKey || event.shiftKey ) {\n\n\t\t\t\t\tif ( scope.enableRotate === false ) return;\n\n\t\t\t\t\thandleMouseDownRotate( event );\n\n\t\t\t\t\tstate = STATE.ROTATE;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tif ( scope.enablePan === false ) return;\n\n\t\t\t\t\thandleMouseDownPan( event );\n\n\t\t\t\t\tstate = STATE.PAN;\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\n\t\t\t\tstate = STATE.NONE;\n\n\t\t}\n\n\t\tif ( state !== STATE.NONE ) {\n\n\t\t\tscope.domElement.ownerDocument.addEventListener( 'pointermove', onPointerMove, false );\n\t\t\tscope.domElement.ownerDocument.addEventListener( 'pointerup', onPointerUp, false );\n\n\t\t\tscope.dispatchEvent( startEvent );\n\n\t\t}\n\n\t}\n\n\tfunction onMouseMove( event ) {\n\n\t\tif ( scope.enabled === false ) return;\n\n\t\tevent.preventDefault();\n\n\t\tswitch ( state ) {\n\n\t\t\tcase STATE.ROTATE:\n\n\t\t\t\tif ( scope.enableRotate === false ) return;\n\n\t\t\t\thandleMouseMoveRotate( event );\n\n\t\t\t\tbreak;\n\n\t\t\tcase STATE.DOLLY:\n\n\t\t\t\tif ( scope.enableZoom === false ) return;\n\n\t\t\t\thandleMouseMoveDolly( event );\n\n\t\t\t\tbreak;\n\n\t\t\tcase STATE.PAN:\n\n\t\t\t\tif ( scope.enablePan === false ) return;\n\n\t\t\t\thandleMouseMovePan( event );\n\n\t\t\t\tbreak;\n\n\t\t}\n\n\t}\n\n\tfunction onMouseUp( event ) {\n\n\t\tscope.domElement.ownerDocument.removeEventListener( 'pointermove', onPointerMove, false );\n\t\tscope.domElement.ownerDocument.removeEventListener( 'pointerup', onPointerUp, false );\n\n\t\tif ( scope.enabled === false ) return;\n\n\t\thandleMouseUp( event );\n\n\t\tscope.dispatchEvent( endEvent );\n\n\t\tstate = STATE.NONE;\n\n\t}\n\n\tfunction onMouseWheel( event ) {\n\n\t\tif ( scope.enabled === false || scope.enableZoom === false || ( state !== STATE.NONE && state !== STATE.ROTATE ) ) return;\n\n\t\tevent.preventDefault();\n\t\tevent.stopPropagation();\n\n\t\tscope.dispatchEvent( startEvent );\n\n\t\thandleMouseWheel( event );\n\n\t\tscope.dispatchEvent( endEvent );\n\n\t}\n\n\tfunction onKeyDown( event ) {\n\n\t\tif ( scope.enabled === false || scope.enableKeys === false || scope.enablePan === false ) return;\n\n\t\thandleKeyDown( event );\n\n\t}\n\n\tfunction onTouchStart( event ) {\n\n\t\tif ( scope.enabled === false ) return;\n\n\t\tevent.preventDefault(); // prevent scrolling\n\n\t\tswitch ( event.touches.length ) {\n\n\t\t\tcase 1:\n\n\t\t\t\tswitch ( scope.touches.ONE ) {\n\n\t\t\t\t\tcase TOUCH.ROTATE:\n\n\t\t\t\t\t\tif ( scope.enableRotate === false ) return;\n\n\t\t\t\t\t\thandleTouchStartRotate( event );\n\n\t\t\t\t\t\tstate = STATE.TOUCH_ROTATE;\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase TOUCH.PAN:\n\n\t\t\t\t\t\tif ( scope.enablePan === false ) return;\n\n\t\t\t\t\t\thandleTouchStartPan( event );\n\n\t\t\t\t\t\tstate = STATE.TOUCH_PAN;\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tdefault:\n\n\t\t\t\t\t\tstate = STATE.NONE;\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tcase 2:\n\n\t\t\t\tswitch ( scope.touches.TWO ) {\n\n\t\t\t\t\tcase TOUCH.DOLLY_PAN:\n\n\t\t\t\t\t\tif ( scope.enableZoom === false && scope.enablePan === false ) return;\n\n\t\t\t\t\t\thandleTouchStartDollyPan( event );\n\n\t\t\t\t\t\tstate = STATE.TOUCH_DOLLY_PAN;\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase TOUCH.DOLLY_ROTATE:\n\n\t\t\t\t\t\tif ( scope.enableZoom === false && scope.enableRotate === false ) return;\n\n\t\t\t\t\t\thandleTouchStartDollyRotate( event );\n\n\t\t\t\t\t\tstate = STATE.TOUCH_DOLLY_ROTATE;\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tdefault:\n\n\t\t\t\t\t\tstate = STATE.NONE;\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\n\t\t\t\tstate = STATE.NONE;\n\n\t\t}\n\n\t\tif ( state !== STATE.NONE ) {\n\n\t\t\tscope.dispatchEvent( startEvent );\n\n\t\t}\n\n\t}\n\n\tfunction onTouchMove( event ) {\n\n\t\tif ( scope.enabled === false ) return;\n\n\t\tevent.preventDefault(); // prevent scrolling\n\t\tevent.stopPropagation();\n\n\t\tswitch ( state ) {\n\n\t\t\tcase STATE.TOUCH_ROTATE:\n\n\t\t\t\tif ( scope.enableRotate === false ) return;\n\n\t\t\t\thandleTouchMoveRotate( event );\n\n\t\t\t\tscope.update();\n\n\t\t\t\tbreak;\n\n\t\t\tcase STATE.TOUCH_PAN:\n\n\t\t\t\tif ( scope.enablePan === false ) return;\n\n\t\t\t\thandleTouchMovePan( event );\n\n\t\t\t\tscope.update();\n\n\t\t\t\tbreak;\n\n\t\t\tcase STATE.TOUCH_DOLLY_PAN:\n\n\t\t\t\tif ( scope.enableZoom === false && scope.enablePan === false ) return;\n\n\t\t\t\thandleTouchMoveDollyPan( event );\n\n\t\t\t\tscope.update();\n\n\t\t\t\tbreak;\n\n\t\t\tcase STATE.TOUCH_DOLLY_ROTATE:\n\n\t\t\t\tif ( scope.enableZoom === false && scope.enableRotate === false ) return;\n\n\t\t\t\thandleTouchMoveDollyRotate( event );\n\n\t\t\t\tscope.update();\n\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\n\t\t\t\tstate = STATE.NONE;\n\n\t\t}\n\n\t}\n\n\tfunction onTouchEnd( event ) {\n\n\t\tif ( scope.enabled === false ) return;\n\n\t\thandleTouchEnd( event );\n\n\t\tscope.dispatchEvent( endEvent );\n\n\t\tstate = STATE.NONE;\n\n\t}\n\n\tfunction onContextMenu( event ) {\n\n\t\tif ( scope.enabled === false ) return;\n\n\t\tevent.preventDefault();\n\n\t}\n\n\t//\n\n\tscope.domElement.addEventListener( 'contextmenu', onContextMenu, false );\n\n\tscope.domElement.addEventListener( 'pointerdown', onPointerDown, false );\n\tscope.domElement.addEventListener( 'wheel', onMouseWheel, false );\n\n\tscope.domElement.addEventListener( 'touchstart', onTouchStart, false );\n\tscope.domElement.addEventListener( 'touchend', onTouchEnd, false );\n\tscope.domElement.addEventListener( 'touchmove', onTouchMove, false );\n\n\tscope.domElement.addEventListener( 'keydown', onKeyDown, false );\n\n\t// force an update at start\n\n\tthis.update();\n\n};\n\nOrbitControls.prototype = Object.create( EventDispatcher.prototype );\nOrbitControls.prototype.constructor = OrbitControls;\n\n\n// This set of controls performs orbiting, dollying (zooming), and panning.\n// Unlike TrackballControls, it maintains the \"up\" direction object.up (+Y by default).\n// This is very similar to OrbitControls, another set of touch behavior\n//\n//    Orbit - right mouse, or left mouse + ctrl/meta/shiftKey / touch: two-finger rotate\n//    Zoom - middle mouse, or mousewheel / touch: two-finger spread or squish\n//    Pan - left mouse, or arrow keys / touch: one-finger move\n\nvar MapControls = function ( object, domElement ) {\n\n\tOrbitControls.call( this, object, domElement );\n\n\tthis.screenSpacePanning = false; // pan orthogonal to world-space direction camera.up\n\n\tthis.mouseButtons.LEFT = MOUSE.PAN;\n\tthis.mouseButtons.RIGHT = MOUSE.ROTATE;\n\n\tthis.touches.ONE = TOUCH.PAN;\n\tthis.touches.TWO = TOUCH.DOLLY_ROTATE;\n\n};\n\nMapControls.prototype = Object.create( EventDispatcher.prototype );\nMapControls.prototype.constructor = MapControls;\n\nexport { OrbitControls, MapControls };\n","import {\n\tBoxBufferGeometry,\n\tBufferGeometry,\n\tColor,\n\tCylinderBufferGeometry,\n\tDoubleSide,\n\tEuler,\n\tFloat32BufferAttribute,\n\tLine,\n\tLineBasicMaterial,\n\tMatrix4,\n\tMesh,\n\tMeshBasicMaterial,\n\tObject3D,\n\tOctahedronBufferGeometry,\n\tPlaneBufferGeometry,\n\tQuaternion,\n\tRaycaster,\n\tSphereBufferGeometry,\n\tTorusBufferGeometry,\n\tVector3\n} from '../../../build/three.module.js';\n\nvar TransformControls = function ( camera, domElement ) {\n\n\tif ( domElement === undefined ) {\n\n\t\tconsole.warn( 'THREE.TransformControls: The second parameter \"domElement\" is now mandatory.' );\n\t\tdomElement = document;\n\n\t}\n\n\tObject3D.call( this );\n\n\tthis.visible = false;\n\tthis.domElement = domElement;\n\n\tvar _gizmo = new TransformControlsGizmo();\n\tthis.add( _gizmo );\n\n\tvar _plane = new TransformControlsPlane();\n\tthis.add( _plane );\n\n\tvar scope = this;\n\n\t// Define properties with getters/setter\n\t// Setting the defined property will automatically trigger change event\n\t// Defined properties are passed down to gizmo and plane\n\n\tdefineProperty( 'camera', camera );\n\tdefineProperty( 'object', undefined );\n\tdefineProperty( 'enabled', true );\n\tdefineProperty( 'axis', null );\n\tdefineProperty( 'mode', 'translate' );\n\tdefineProperty( 'translationSnap', null );\n\tdefineProperty( 'rotationSnap', null );\n\tdefineProperty( 'scaleSnap', null );\n\tdefineProperty( 'space', 'world' );\n\tdefineProperty( 'size', 1 );\n\tdefineProperty( 'dragging', false );\n\tdefineProperty( 'showX', true );\n\tdefineProperty( 'showY', true );\n\tdefineProperty( 'showZ', true );\n\n\tvar changeEvent = { type: 'change' };\n\tvar mouseDownEvent = { type: 'mouseDown' };\n\tvar mouseUpEvent = { type: 'mouseUp', mode: scope.mode };\n\tvar objectChangeEvent = { type: 'objectChange' };\n\n\t// Reusable utility variables\n\n\tvar raycaster = new Raycaster();\n\n\tfunction intersectObjectWithRay( object, raycaster, includeInvisible ) {\n\n\t\tvar allIntersections = raycaster.intersectObject( object, true );\n\n\t\tfor ( var i = 0; i < allIntersections.length; i ++ ) {\n\n\t\t\tif ( allIntersections[ i ].object.visible || includeInvisible ) {\n\n\t\t\t\treturn allIntersections[ i ];\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn false;\n\n\t}\n\n\tvar _tempVector = new Vector3();\n\tvar _tempVector2 = new Vector3();\n\tvar _tempQuaternion = new Quaternion();\n\tvar _unit = {\n\t\tX: new Vector3( 1, 0, 0 ),\n\t\tY: new Vector3( 0, 1, 0 ),\n\t\tZ: new Vector3( 0, 0, 1 )\n\t};\n\n\tvar pointStart = new Vector3();\n\tvar pointEnd = new Vector3();\n\tvar offset = new Vector3();\n\tvar rotationAxis = new Vector3();\n\tvar startNorm = new Vector3();\n\tvar endNorm = new Vector3();\n\tvar rotationAngle = 0;\n\n\tvar cameraPosition = new Vector3();\n\tvar cameraQuaternion = new Quaternion();\n\tvar cameraScale = new Vector3();\n\n\tvar parentPosition = new Vector3();\n\tvar parentQuaternion = new Quaternion();\n\tvar parentQuaternionInv = new Quaternion();\n\tvar parentScale = new Vector3();\n\n\tvar worldPositionStart = new Vector3();\n\tvar worldQuaternionStart = new Quaternion();\n\tvar worldScaleStart = new Vector3();\n\n\tvar worldPosition = new Vector3();\n\tvar worldQuaternion = new Quaternion();\n\tvar worldQuaternionInv = new Quaternion();\n\tvar worldScale = new Vector3();\n\n\tvar eye = new Vector3();\n\n\tvar positionStart = new Vector3();\n\tvar quaternionStart = new Quaternion();\n\tvar scaleStart = new Vector3();\n\n\t// TODO: remove properties unused in plane and gizmo\n\n\tdefineProperty( 'worldPosition', worldPosition );\n\tdefineProperty( 'worldPositionStart', worldPositionStart );\n\tdefineProperty( 'worldQuaternion', worldQuaternion );\n\tdefineProperty( 'worldQuaternionStart', worldQuaternionStart );\n\tdefineProperty( 'cameraPosition', cameraPosition );\n\tdefineProperty( 'cameraQuaternion', cameraQuaternion );\n\tdefineProperty( 'pointStart', pointStart );\n\tdefineProperty( 'pointEnd', pointEnd );\n\tdefineProperty( 'rotationAxis', rotationAxis );\n\tdefineProperty( 'rotationAngle', rotationAngle );\n\tdefineProperty( 'eye', eye );\n\n\t{\n\n\t\tdomElement.addEventListener( 'pointerdown', onPointerDown, false );\n\t\tdomElement.addEventListener( 'pointermove', onPointerHover, false );\n\t\tscope.domElement.ownerDocument.addEventListener( 'pointerup', onPointerUp, false );\n\n\t}\n\n\tthis.dispose = function () {\n\n\t\tdomElement.removeEventListener( 'pointerdown', onPointerDown );\n\t\tdomElement.removeEventListener( 'pointermove', onPointerHover );\n\t\tscope.domElement.ownerDocument.removeEventListener( 'pointermove', onPointerMove );\n\t\tscope.domElement.ownerDocument.removeEventListener( 'pointerup', onPointerUp );\n\n\t\tthis.traverse( function ( child ) {\n\n\t\t\tif ( child.geometry ) child.geometry.dispose();\n\t\t\tif ( child.material ) child.material.dispose();\n\n\t\t} );\n\n\t};\n\n\t// Set current object\n\tthis.attach = function ( object ) {\n\n\t\tthis.object = object;\n\t\tthis.visible = true;\n\n\t\treturn this;\n\n\t};\n\n\t// Detatch from object\n\tthis.detach = function () {\n\n\t\tthis.object = undefined;\n\t\tthis.visible = false;\n\t\tthis.axis = null;\n\n\t\treturn this;\n\n\t};\n\n\t// Defined getter, setter and store for a property\n\tfunction defineProperty( propName, defaultValue ) {\n\n\t\tvar propValue = defaultValue;\n\n\t\tObject.defineProperty( scope, propName, {\n\n\t\t\tget: function () {\n\n\t\t\t\treturn propValue !== undefined ? propValue : defaultValue;\n\n\t\t\t},\n\n\t\t\tset: function ( value ) {\n\n\t\t\t\tif ( propValue !== value ) {\n\n\t\t\t\t\tpropValue = value;\n\t\t\t\t\t_plane[ propName ] = value;\n\t\t\t\t\t_gizmo[ propName ] = value;\n\n\t\t\t\t\tscope.dispatchEvent( { type: propName + '-changed', value: value } );\n\t\t\t\t\tscope.dispatchEvent( changeEvent );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} );\n\n\t\tscope[ propName ] = defaultValue;\n\t\t_plane[ propName ] = defaultValue;\n\t\t_gizmo[ propName ] = defaultValue;\n\n\t}\n\n\t// updateMatrixWorld  updates key transformation variables\n\tthis.updateMatrixWorld = function () {\n\n\t\tif ( this.object !== undefined ) {\n\n\t\t\tthis.object.updateMatrixWorld();\n\n\t\t\tif ( this.object.parent === null ) {\n\n\t\t\t\tconsole.error( 'TransformControls: The attached 3D object must be a part of the scene graph.' );\n\n\t\t\t} else {\n\n\t\t\t\tthis.object.parent.matrixWorld.decompose( parentPosition, parentQuaternion, parentScale );\n\n\t\t\t}\n\n\t\t\tthis.object.matrixWorld.decompose( worldPosition, worldQuaternion, worldScale );\n\n\t\t\tparentQuaternionInv.copy( parentQuaternion ).invert();\n\t\t\tworldQuaternionInv.copy( worldQuaternion ).invert();\n\n\t\t}\n\n\t\tthis.camera.updateMatrixWorld();\n\t\tthis.camera.matrixWorld.decompose( cameraPosition, cameraQuaternion, cameraScale );\n\n\t\teye.copy( cameraPosition ).sub( worldPosition ).normalize();\n\n\t\tObject3D.prototype.updateMatrixWorld.call( this );\n\n\t};\n\n\tthis.pointerHover = function ( pointer ) {\n\n\t\tif ( this.object === undefined || this.dragging === true ) return;\n\n\t\traycaster.setFromCamera( pointer, this.camera );\n\n\t\tvar intersect = intersectObjectWithRay( _gizmo.picker[ this.mode ], raycaster );\n\n\t\tif ( intersect ) {\n\n\t\t\tthis.axis = intersect.object.name;\n\n\t\t} else {\n\n\t\t\tthis.axis = null;\n\n\t\t}\n\n\t};\n\n\tthis.pointerDown = function ( pointer ) {\n\n\t\tif ( this.object === undefined || this.dragging === true || pointer.button !== 0 ) return;\n\n\t\tif ( this.axis !== null ) {\n\n\t\t\traycaster.setFromCamera( pointer, this.camera );\n\n\t\t\tvar planeIntersect = intersectObjectWithRay( _plane, raycaster, true );\n\n\t\t\tif ( planeIntersect ) {\n\n\t\t\t\tvar space = this.space;\n\n\t\t\t\tif ( this.mode === 'scale' ) {\n\n\t\t\t\t\tspace = 'local';\n\n\t\t\t\t} else if ( this.axis === 'E' || this.axis === 'XYZE' || this.axis === 'XYZ' ) {\n\n\t\t\t\t\tspace = 'world';\n\n\t\t\t\t}\n\n\t\t\t\tif ( space === 'local' && this.mode === 'rotate' ) {\n\n\t\t\t\t\tvar snap = this.rotationSnap;\n\n\t\t\t\t\tif ( this.axis === 'X' && snap ) this.object.rotation.x = Math.round( this.object.rotation.x / snap ) * snap;\n\t\t\t\t\tif ( this.axis === 'Y' && snap ) this.object.rotation.y = Math.round( this.object.rotation.y / snap ) * snap;\n\t\t\t\t\tif ( this.axis === 'Z' && snap ) this.object.rotation.z = Math.round( this.object.rotation.z / snap ) * snap;\n\n\t\t\t\t}\n\n\t\t\t\tthis.object.updateMatrixWorld();\n\t\t\t\tthis.object.parent.updateMatrixWorld();\n\n\t\t\t\tpositionStart.copy( this.object.position );\n\t\t\t\tquaternionStart.copy( this.object.quaternion );\n\t\t\t\tscaleStart.copy( this.object.scale );\n\n\t\t\t\tthis.object.matrixWorld.decompose( worldPositionStart, worldQuaternionStart, worldScaleStart );\n\n\t\t\t\tpointStart.copy( planeIntersect.point ).sub( worldPositionStart );\n\n\t\t\t}\n\n\t\t\tthis.dragging = true;\n\t\t\tmouseDownEvent.mode = this.mode;\n\t\t\tthis.dispatchEvent( mouseDownEvent );\n\n\t\t}\n\n\t};\n\n\tthis.pointerMove = function ( pointer ) {\n\n\t\tvar axis = this.axis;\n\t\tvar mode = this.mode;\n\t\tvar object = this.object;\n\t\tvar space = this.space;\n\n\t\tif ( mode === 'scale' ) {\n\n\t\t\tspace = 'local';\n\n\t\t} else if ( axis === 'E' || axis === 'XYZE' || axis === 'XYZ' ) {\n\n\t\t\tspace = 'world';\n\n\t\t}\n\n\t\tif ( object === undefined || axis === null || this.dragging === false || pointer.button !== - 1 ) return;\n\n\t\traycaster.setFromCamera( pointer, this.camera );\n\n\t\tvar planeIntersect = intersectObjectWithRay( _plane, raycaster, true );\n\n\t\tif ( ! planeIntersect ) return;\n\n\t\tpointEnd.copy( planeIntersect.point ).sub( worldPositionStart );\n\n\t\tif ( mode === 'translate' ) {\n\n\t\t\t// Apply translate\n\n\t\t\toffset.copy( pointEnd ).sub( pointStart );\n\n\t\t\tif ( space === 'local' && axis !== 'XYZ' ) {\n\n\t\t\t\toffset.applyQuaternion( worldQuaternionInv );\n\n\t\t\t}\n\n\t\t\tif ( axis.indexOf( 'X' ) === - 1 ) offset.x = 0;\n\t\t\tif ( axis.indexOf( 'Y' ) === - 1 ) offset.y = 0;\n\t\t\tif ( axis.indexOf( 'Z' ) === - 1 ) offset.z = 0;\n\n\t\t\tif ( space === 'local' && axis !== 'XYZ' ) {\n\n\t\t\t\toffset.applyQuaternion( quaternionStart ).divide( parentScale );\n\n\t\t\t} else {\n\n\t\t\t\toffset.applyQuaternion( parentQuaternionInv ).divide( parentScale );\n\n\t\t\t}\n\n\t\t\tobject.position.copy( offset ).add( positionStart );\n\n\t\t\t// Apply translation snap\n\n\t\t\tif ( this.translationSnap ) {\n\n\t\t\t\tif ( space === 'local' ) {\n\n\t\t\t\t\tobject.position.applyQuaternion( _tempQuaternion.copy( quaternionStart ).invert() );\n\n\t\t\t\t\tif ( axis.search( 'X' ) !== - 1 ) {\n\n\t\t\t\t\t\tobject.position.x = Math.round( object.position.x / this.translationSnap ) * this.translationSnap;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( axis.search( 'Y' ) !== - 1 ) {\n\n\t\t\t\t\t\tobject.position.y = Math.round( object.position.y / this.translationSnap ) * this.translationSnap;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( axis.search( 'Z' ) !== - 1 ) {\n\n\t\t\t\t\t\tobject.position.z = Math.round( object.position.z / this.translationSnap ) * this.translationSnap;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tobject.position.applyQuaternion( quaternionStart );\n\n\t\t\t\t}\n\n\t\t\t\tif ( space === 'world' ) {\n\n\t\t\t\t\tif ( object.parent ) {\n\n\t\t\t\t\t\tobject.position.add( _tempVector.setFromMatrixPosition( object.parent.matrixWorld ) );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( axis.search( 'X' ) !== - 1 ) {\n\n\t\t\t\t\t\tobject.position.x = Math.round( object.position.x / this.translationSnap ) * this.translationSnap;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( axis.search( 'Y' ) !== - 1 ) {\n\n\t\t\t\t\t\tobject.position.y = Math.round( object.position.y / this.translationSnap ) * this.translationSnap;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( axis.search( 'Z' ) !== - 1 ) {\n\n\t\t\t\t\t\tobject.position.z = Math.round( object.position.z / this.translationSnap ) * this.translationSnap;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( object.parent ) {\n\n\t\t\t\t\t\tobject.position.sub( _tempVector.setFromMatrixPosition( object.parent.matrixWorld ) );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else if ( mode === 'scale' ) {\n\n\t\t\tif ( axis.search( 'XYZ' ) !== - 1 ) {\n\n\t\t\t\tvar d = pointEnd.length() / pointStart.length();\n\n\t\t\t\tif ( pointEnd.dot( pointStart ) < 0 ) d *= - 1;\n\n\t\t\t\t_tempVector2.set( d, d, d );\n\n\t\t\t} else {\n\n\t\t\t\t_tempVector.copy( pointStart );\n\t\t\t\t_tempVector2.copy( pointEnd );\n\n\t\t\t\t_tempVector.applyQuaternion( worldQuaternionInv );\n\t\t\t\t_tempVector2.applyQuaternion( worldQuaternionInv );\n\n\t\t\t\t_tempVector2.divide( _tempVector );\n\n\t\t\t\tif ( axis.search( 'X' ) === - 1 ) {\n\n\t\t\t\t\t_tempVector2.x = 1;\n\n\t\t\t\t}\n\n\t\t\t\tif ( axis.search( 'Y' ) === - 1 ) {\n\n\t\t\t\t\t_tempVector2.y = 1;\n\n\t\t\t\t}\n\n\t\t\t\tif ( axis.search( 'Z' ) === - 1 ) {\n\n\t\t\t\t\t_tempVector2.z = 1;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// Apply scale\n\n\t\t\tobject.scale.copy( scaleStart ).multiply( _tempVector2 );\n\n\t\t\tif ( this.scaleSnap ) {\n\n\t\t\t\tif ( axis.search( 'X' ) !== - 1 ) {\n\n\t\t\t\t\tobject.scale.x = Math.round( object.scale.x / this.scaleSnap ) * this.scaleSnap || this.scaleSnap;\n\n\t\t\t\t}\n\n\t\t\t\tif ( axis.search( 'Y' ) !== - 1 ) {\n\n\t\t\t\t\tobject.scale.y = Math.round( object.scale.y / this.scaleSnap ) * this.scaleSnap || this.scaleSnap;\n\n\t\t\t\t}\n\n\t\t\t\tif ( axis.search( 'Z' ) !== - 1 ) {\n\n\t\t\t\t\tobject.scale.z = Math.round( object.scale.z / this.scaleSnap ) * this.scaleSnap || this.scaleSnap;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else if ( mode === 'rotate' ) {\n\n\t\t\toffset.copy( pointEnd ).sub( pointStart );\n\n\t\t\tvar ROTATION_SPEED = 20 / worldPosition.distanceTo( _tempVector.setFromMatrixPosition( this.camera.matrixWorld ) );\n\n\t\t\tif ( axis === 'E' ) {\n\n\t\t\t\trotationAxis.copy( eye );\n\t\t\t\trotationAngle = pointEnd.angleTo( pointStart );\n\n\t\t\t\tstartNorm.copy( pointStart ).normalize();\n\t\t\t\tendNorm.copy( pointEnd ).normalize();\n\n\t\t\t\trotationAngle *= ( endNorm.cross( startNorm ).dot( eye ) < 0 ? 1 : - 1 );\n\n\t\t\t} else if ( axis === 'XYZE' ) {\n\n\t\t\t\trotationAxis.copy( offset ).cross( eye ).normalize();\n\t\t\t\trotationAngle = offset.dot( _tempVector.copy( rotationAxis ).cross( this.eye ) ) * ROTATION_SPEED;\n\n\t\t\t} else if ( axis === 'X' || axis === 'Y' || axis === 'Z' ) {\n\n\t\t\t\trotationAxis.copy( _unit[ axis ] );\n\n\t\t\t\t_tempVector.copy( _unit[ axis ] );\n\n\t\t\t\tif ( space === 'local' ) {\n\n\t\t\t\t\t_tempVector.applyQuaternion( worldQuaternion );\n\n\t\t\t\t}\n\n\t\t\t\trotationAngle = offset.dot( _tempVector.cross( eye ).normalize() ) * ROTATION_SPEED;\n\n\t\t\t}\n\n\t\t\t// Apply rotation snap\n\n\t\t\tif ( this.rotationSnap ) rotationAngle = Math.round( rotationAngle / this.rotationSnap ) * this.rotationSnap;\n\n\t\t\tthis.rotationAngle = rotationAngle;\n\n\t\t\t// Apply rotate\n\t\t\tif ( space === 'local' && axis !== 'E' && axis !== 'XYZE' ) {\n\n\t\t\t\tobject.quaternion.copy( quaternionStart );\n\t\t\t\tobject.quaternion.multiply( _tempQuaternion.setFromAxisAngle( rotationAxis, rotationAngle ) ).normalize();\n\n\t\t\t} else {\n\n\t\t\t\trotationAxis.applyQuaternion( parentQuaternionInv );\n\t\t\t\tobject.quaternion.copy( _tempQuaternion.setFromAxisAngle( rotationAxis, rotationAngle ) );\n\t\t\t\tobject.quaternion.multiply( quaternionStart ).normalize();\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis.dispatchEvent( changeEvent );\n\t\tthis.dispatchEvent( objectChangeEvent );\n\n\t};\n\n\tthis.pointerUp = function ( pointer ) {\n\n\t\tif ( pointer.button !== 0 ) return;\n\n\t\tif ( this.dragging && ( this.axis !== null ) ) {\n\n\t\t\tmouseUpEvent.mode = this.mode;\n\t\t\tthis.dispatchEvent( mouseUpEvent );\n\n\t\t}\n\n\t\tthis.dragging = false;\n\t\tthis.axis = null;\n\n\t};\n\n\t// normalize mouse / touch pointer and remap {x,y} to view space.\n\n\tfunction getPointer( event ) {\n\n\t\tif ( scope.domElement.ownerDocument.pointerLockElement ) {\n\n\t\t\treturn {\n\t\t\t\tx: 0,\n\t\t\t\ty: 0,\n\t\t\t\tbutton: event.button\n\t\t\t};\n\n\t\t} else {\n\n\t\t\tvar pointer = event.changedTouches ? event.changedTouches[ 0 ] : event;\n\n\t\t\tvar rect = domElement.getBoundingClientRect();\n\n\t\t\treturn {\n\t\t\t\tx: ( pointer.clientX - rect.left ) / rect.width * 2 - 1,\n\t\t\t\ty: - ( pointer.clientY - rect.top ) / rect.height * 2 + 1,\n\t\t\t\tbutton: event.button\n\t\t\t};\n\n\t\t}\n\n\t}\n\n\t// mouse / touch event handlers\n\n\tfunction onPointerHover( event ) {\n\n\t\tif ( ! scope.enabled ) return;\n\n\t\tswitch ( event.pointerType ) {\n\n\t\t\tcase 'mouse':\n\t\t\tcase 'pen':\n\t\t\t\tscope.pointerHover( getPointer( event ) );\n\t\t\t\tbreak;\n\n\t\t}\n\n\t}\n\n\tfunction onPointerDown( event ) {\n\n\t\tif ( ! scope.enabled ) return;\n\n\t\tscope.domElement.style.touchAction = 'none'; // disable touch scroll\n\t\tscope.domElement.ownerDocument.addEventListener( 'pointermove', onPointerMove, false );\n\n\t\tscope.pointerHover( getPointer( event ) );\n\t\tscope.pointerDown( getPointer( event ) );\n\n\t}\n\n\tfunction onPointerMove( event ) {\n\n\t\tif ( ! scope.enabled ) return;\n\n\t\tscope.pointerMove( getPointer( event ) );\n\n\t}\n\n\tfunction onPointerUp( event ) {\n\n\t\tif ( ! scope.enabled ) return;\n\n\t\tscope.domElement.style.touchAction = '';\n\t\tscope.domElement.ownerDocument.removeEventListener( 'pointermove', onPointerMove, false );\n\n\t\tscope.pointerUp( getPointer( event ) );\n\n\t}\n\n\t// TODO: deprecate\n\n\tthis.getMode = function () {\n\n\t\treturn scope.mode;\n\n\t};\n\n\tthis.setMode = function ( mode ) {\n\n\t\tscope.mode = mode;\n\n\t};\n\n\tthis.setTranslationSnap = function ( translationSnap ) {\n\n\t\tscope.translationSnap = translationSnap;\n\n\t};\n\n\tthis.setRotationSnap = function ( rotationSnap ) {\n\n\t\tscope.rotationSnap = rotationSnap;\n\n\t};\n\n\tthis.setScaleSnap = function ( scaleSnap ) {\n\n\t\tscope.scaleSnap = scaleSnap;\n\n\t};\n\n\tthis.setSize = function ( size ) {\n\n\t\tscope.size = size;\n\n\t};\n\n\tthis.setSpace = function ( space ) {\n\n\t\tscope.space = space;\n\n\t};\n\n\tthis.update = function () {\n\n\t\tconsole.warn( 'THREE.TransformControls: update function has no more functionality and therefore has been deprecated.' );\n\n\t};\n\n};\n\nTransformControls.prototype = Object.assign( Object.create( Object3D.prototype ), {\n\n\tconstructor: TransformControls,\n\n\tisTransformControls: true\n\n} );\n\n\nvar TransformControlsGizmo = function () {\n\n\t'use strict';\n\n\tObject3D.call( this );\n\n\tthis.type = 'TransformControlsGizmo';\n\n\t// shared materials\n\n\tvar gizmoMaterial = new MeshBasicMaterial( {\n\t\tdepthTest: false,\n\t\tdepthWrite: false,\n\t\ttransparent: true,\n\t\tside: DoubleSide,\n\t\tfog: false,\n\t\ttoneMapped: false\n\t} );\n\n\tvar gizmoLineMaterial = new LineBasicMaterial( {\n\t\tdepthTest: false,\n\t\tdepthWrite: false,\n\t\ttransparent: true,\n\t\tlinewidth: 1,\n\t\tfog: false,\n\t\ttoneMapped: false\n\t} );\n\n\t// Make unique material for each axis/color\n\n\tvar matInvisible = gizmoMaterial.clone();\n\tmatInvisible.opacity = 0.15;\n\n\tvar matHelper = gizmoMaterial.clone();\n\tmatHelper.opacity = 0.33;\n\n\tvar matRed = gizmoMaterial.clone();\n\tmatRed.color.set( 0xff0000 );\n\n\tvar matGreen = gizmoMaterial.clone();\n\tmatGreen.color.set( 0x00ff00 );\n\n\tvar matBlue = gizmoMaterial.clone();\n\tmatBlue.color.set( 0x0000ff );\n\n\tvar matWhiteTransparent = gizmoMaterial.clone();\n\tmatWhiteTransparent.opacity = 0.25;\n\n\tvar matYellowTransparent = matWhiteTransparent.clone();\n\tmatYellowTransparent.color.set( 0xffff00 );\n\n\tvar matCyanTransparent = matWhiteTransparent.clone();\n\tmatCyanTransparent.color.set( 0x00ffff );\n\n\tvar matMagentaTransparent = matWhiteTransparent.clone();\n\tmatMagentaTransparent.color.set( 0xff00ff );\n\n\tvar matYellow = gizmoMaterial.clone();\n\tmatYellow.color.set( 0xffff00 );\n\n\tvar matLineRed = gizmoLineMaterial.clone();\n\tmatLineRed.color.set( 0xff0000 );\n\n\tvar matLineGreen = gizmoLineMaterial.clone();\n\tmatLineGreen.color.set( 0x00ff00 );\n\n\tvar matLineBlue = gizmoLineMaterial.clone();\n\tmatLineBlue.color.set( 0x0000ff );\n\n\tvar matLineCyan = gizmoLineMaterial.clone();\n\tmatLineCyan.color.set( 0x00ffff );\n\n\tvar matLineMagenta = gizmoLineMaterial.clone();\n\tmatLineMagenta.color.set( 0xff00ff );\n\n\tvar matLineYellow = gizmoLineMaterial.clone();\n\tmatLineYellow.color.set( 0xffff00 );\n\n\tvar matLineGray = gizmoLineMaterial.clone();\n\tmatLineGray.color.set( 0x787878 );\n\n\tvar matLineYellowTransparent = matLineYellow.clone();\n\tmatLineYellowTransparent.opacity = 0.25;\n\n\t// reusable geometry\n\n\tvar arrowGeometry = new CylinderBufferGeometry( 0, 0.05, 0.2, 12, 1, false );\n\n\tvar scaleHandleGeometry = new BoxBufferGeometry( 0.125, 0.125, 0.125 );\n\n\tvar lineGeometry = new BufferGeometry();\n\tlineGeometry.setAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0,\t1, 0, 0 ], 3 ) );\n\n\tvar CircleGeometry = function ( radius, arc ) {\n\n\t\tvar geometry = new BufferGeometry( );\n\t\tvar vertices = [];\n\n\t\tfor ( var i = 0; i <= 64 * arc; ++ i ) {\n\n\t\t\tvertices.push( 0, Math.cos( i / 32 * Math.PI ) * radius, Math.sin( i / 32 * Math.PI ) * radius );\n\n\t\t}\n\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\n\t\treturn geometry;\n\n\t};\n\n\t// Special geometry for transform helper. If scaled with position vector it spans from [0,0,0] to position\n\n\tvar TranslateHelperGeometry = function () {\n\n\t\tvar geometry = new BufferGeometry();\n\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0, 1, 1, 1 ], 3 ) );\n\n\t\treturn geometry;\n\n\t};\n\n\t// Gizmo definitions - custom hierarchy definitions for setupGizmo() function\n\n\tvar gizmoTranslate = {\n\t\tX: [\n\t\t\t[ new Mesh( arrowGeometry, matRed ), [ 1, 0, 0 ], [ 0, 0, - Math.PI / 2 ], null, 'fwd' ],\n\t\t\t[ new Mesh( arrowGeometry, matRed ), [ 1, 0, 0 ], [ 0, 0, Math.PI / 2 ], null, 'bwd' ],\n\t\t\t[ new Line( lineGeometry, matLineRed ) ]\n\t\t],\n\t\tY: [\n\t\t\t[ new Mesh( arrowGeometry, matGreen ), [ 0, 1, 0 ], null, null, 'fwd' ],\n\t\t\t[ new Mesh( arrowGeometry, matGreen ), [ 0, 1, 0 ], [ Math.PI, 0, 0 ], null, 'bwd' ],\n\t\t\t[ new Line( lineGeometry, matLineGreen ), null, [ 0, 0, Math.PI / 2 ]]\n\t\t],\n\t\tZ: [\n\t\t\t[ new Mesh( arrowGeometry, matBlue ), [ 0, 0, 1 ], [ Math.PI / 2, 0, 0 ], null, 'fwd' ],\n\t\t\t[ new Mesh( arrowGeometry, matBlue ), [ 0, 0, 1 ], [ - Math.PI / 2, 0, 0 ], null, 'bwd' ],\n\t\t\t[ new Line( lineGeometry, matLineBlue ), null, [ 0, - Math.PI / 2, 0 ]]\n\t\t],\n\t\tXYZ: [\n\t\t\t[ new Mesh( new OctahedronBufferGeometry( 0.1, 0 ), matWhiteTransparent.clone() ), [ 0, 0, 0 ], [ 0, 0, 0 ]]\n\t\t],\n\t\tXY: [\n\t\t\t[ new Mesh( new PlaneBufferGeometry( 0.295, 0.295 ), matYellowTransparent.clone() ), [ 0.15, 0.15, 0 ]],\n\t\t\t[ new Line( lineGeometry, matLineYellow ), [ 0.18, 0.3, 0 ], null, [ 0.125, 1, 1 ]],\n\t\t\t[ new Line( lineGeometry, matLineYellow ), [ 0.3, 0.18, 0 ], [ 0, 0, Math.PI / 2 ], [ 0.125, 1, 1 ]]\n\t\t],\n\t\tYZ: [\n\t\t\t[ new Mesh( new PlaneBufferGeometry( 0.295, 0.295 ), matCyanTransparent.clone() ), [ 0, 0.15, 0.15 ], [ 0, Math.PI / 2, 0 ]],\n\t\t\t[ new Line( lineGeometry, matLineCyan ), [ 0, 0.18, 0.3 ], [ 0, 0, Math.PI / 2 ], [ 0.125, 1, 1 ]],\n\t\t\t[ new Line( lineGeometry, matLineCyan ), [ 0, 0.3, 0.18 ], [ 0, - Math.PI / 2, 0 ], [ 0.125, 1, 1 ]]\n\t\t],\n\t\tXZ: [\n\t\t\t[ new Mesh( new PlaneBufferGeometry( 0.295, 0.295 ), matMagentaTransparent.clone() ), [ 0.15, 0, 0.15 ], [ - Math.PI / 2, 0, 0 ]],\n\t\t\t[ new Line( lineGeometry, matLineMagenta ), [ 0.18, 0, 0.3 ], null, [ 0.125, 1, 1 ]],\n\t\t\t[ new Line( lineGeometry, matLineMagenta ), [ 0.3, 0, 0.18 ], [ 0, - Math.PI / 2, 0 ], [ 0.125, 1, 1 ]]\n\t\t]\n\t};\n\n\tvar pickerTranslate = {\n\t\tX: [\n\t\t\t[ new Mesh( new CylinderBufferGeometry( 0.2, 0, 1, 4, 1, false ), matInvisible ), [ 0.6, 0, 0 ], [ 0, 0, - Math.PI / 2 ]]\n\t\t],\n\t\tY: [\n\t\t\t[ new Mesh( new CylinderBufferGeometry( 0.2, 0, 1, 4, 1, false ), matInvisible ), [ 0, 0.6, 0 ]]\n\t\t],\n\t\tZ: [\n\t\t\t[ new Mesh( new CylinderBufferGeometry( 0.2, 0, 1, 4, 1, false ), matInvisible ), [ 0, 0, 0.6 ], [ Math.PI / 2, 0, 0 ]]\n\t\t],\n\t\tXYZ: [\n\t\t\t[ new Mesh( new OctahedronBufferGeometry( 0.2, 0 ), matInvisible ) ]\n\t\t],\n\t\tXY: [\n\t\t\t[ new Mesh( new PlaneBufferGeometry( 0.4, 0.4 ), matInvisible ), [ 0.2, 0.2, 0 ]]\n\t\t],\n\t\tYZ: [\n\t\t\t[ new Mesh( new PlaneBufferGeometry( 0.4, 0.4 ), matInvisible ), [ 0, 0.2, 0.2 ], [ 0, Math.PI / 2, 0 ]]\n\t\t],\n\t\tXZ: [\n\t\t\t[ new Mesh( new PlaneBufferGeometry( 0.4, 0.4 ), matInvisible ), [ 0.2, 0, 0.2 ], [ - Math.PI / 2, 0, 0 ]]\n\t\t]\n\t};\n\n\tvar helperTranslate = {\n\t\tSTART: [\n\t\t\t[ new Mesh( new OctahedronBufferGeometry( 0.01, 2 ), matHelper ), null, null, null, 'helper' ]\n\t\t],\n\t\tEND: [\n\t\t\t[ new Mesh( new OctahedronBufferGeometry( 0.01, 2 ), matHelper ), null, null, null, 'helper' ]\n\t\t],\n\t\tDELTA: [\n\t\t\t[ new Line( TranslateHelperGeometry(), matHelper ), null, null, null, 'helper' ]\n\t\t],\n\t\tX: [\n\t\t\t[ new Line( lineGeometry, matHelper.clone() ), [ - 1e3, 0, 0 ], null, [ 1e6, 1, 1 ], 'helper' ]\n\t\t],\n\t\tY: [\n\t\t\t[ new Line( lineGeometry, matHelper.clone() ), [ 0, - 1e3, 0 ], [ 0, 0, Math.PI / 2 ], [ 1e6, 1, 1 ], 'helper' ]\n\t\t],\n\t\tZ: [\n\t\t\t[ new Line( lineGeometry, matHelper.clone() ), [ 0, 0, - 1e3 ], [ 0, - Math.PI / 2, 0 ], [ 1e6, 1, 1 ], 'helper' ]\n\t\t]\n\t};\n\n\tvar gizmoRotate = {\n\t\tX: [\n\t\t\t[ new Line( CircleGeometry( 1, 0.5 ), matLineRed ) ],\n\t\t\t[ new Mesh( new OctahedronBufferGeometry( 0.04, 0 ), matRed ), [ 0, 0, 0.99 ], null, [ 1, 3, 1 ]],\n\t\t],\n\t\tY: [\n\t\t\t[ new Line( CircleGeometry( 1, 0.5 ), matLineGreen ), null, [ 0, 0, - Math.PI / 2 ]],\n\t\t\t[ new Mesh( new OctahedronBufferGeometry( 0.04, 0 ), matGreen ), [ 0, 0, 0.99 ], null, [ 3, 1, 1 ]],\n\t\t],\n\t\tZ: [\n\t\t\t[ new Line( CircleGeometry( 1, 0.5 ), matLineBlue ), null, [ 0, Math.PI / 2, 0 ]],\n\t\t\t[ new Mesh( new OctahedronBufferGeometry( 0.04, 0 ), matBlue ), [ 0.99, 0, 0 ], null, [ 1, 3, 1 ]],\n\t\t],\n\t\tE: [\n\t\t\t[ new Line( CircleGeometry( 1.25, 1 ), matLineYellowTransparent ), null, [ 0, Math.PI / 2, 0 ]],\n\t\t\t[ new Mesh( new CylinderBufferGeometry( 0.03, 0, 0.15, 4, 1, false ), matLineYellowTransparent ), [ 1.17, 0, 0 ], [ 0, 0, - Math.PI / 2 ], [ 1, 1, 0.001 ]],\n\t\t\t[ new Mesh( new CylinderBufferGeometry( 0.03, 0, 0.15, 4, 1, false ), matLineYellowTransparent ), [ - 1.17, 0, 0 ], [ 0, 0, Math.PI / 2 ], [ 1, 1, 0.001 ]],\n\t\t\t[ new Mesh( new CylinderBufferGeometry( 0.03, 0, 0.15, 4, 1, false ), matLineYellowTransparent ), [ 0, - 1.17, 0 ], [ Math.PI, 0, 0 ], [ 1, 1, 0.001 ]],\n\t\t\t[ new Mesh( new CylinderBufferGeometry( 0.03, 0, 0.15, 4, 1, false ), matLineYellowTransparent ), [ 0, 1.17, 0 ], [ 0, 0, 0 ], [ 1, 1, 0.001 ]],\n\t\t],\n\t\tXYZE: [\n\t\t\t[ new Line( CircleGeometry( 1, 1 ), matLineGray ), null, [ 0, Math.PI / 2, 0 ]]\n\t\t]\n\t};\n\n\tvar helperRotate = {\n\t\tAXIS: [\n\t\t\t[ new Line( lineGeometry, matHelper.clone() ), [ - 1e3, 0, 0 ], null, [ 1e6, 1, 1 ], 'helper' ]\n\t\t]\n\t};\n\n\tvar pickerRotate = {\n\t\tX: [\n\t\t\t[ new Mesh( new TorusBufferGeometry( 1, 0.1, 4, 24 ), matInvisible ), [ 0, 0, 0 ], [ 0, - Math.PI / 2, - Math.PI / 2 ]],\n\t\t],\n\t\tY: [\n\t\t\t[ new Mesh( new TorusBufferGeometry( 1, 0.1, 4, 24 ), matInvisible ), [ 0, 0, 0 ], [ Math.PI / 2, 0, 0 ]],\n\t\t],\n\t\tZ: [\n\t\t\t[ new Mesh( new TorusBufferGeometry( 1, 0.1, 4, 24 ), matInvisible ), [ 0, 0, 0 ], [ 0, 0, - Math.PI / 2 ]],\n\t\t],\n\t\tE: [\n\t\t\t[ new Mesh( new TorusBufferGeometry( 1.25, 0.1, 2, 24 ), matInvisible ) ]\n\t\t],\n\t\tXYZE: [\n\t\t\t[ new Mesh( new SphereBufferGeometry( 0.7, 10, 8 ), matInvisible ) ]\n\t\t]\n\t};\n\n\tvar gizmoScale = {\n\t\tX: [\n\t\t\t[ new Mesh( scaleHandleGeometry, matRed ), [ 0.8, 0, 0 ], [ 0, 0, - Math.PI / 2 ]],\n\t\t\t[ new Line( lineGeometry, matLineRed ), null, null, [ 0.8, 1, 1 ]]\n\t\t],\n\t\tY: [\n\t\t\t[ new Mesh( scaleHandleGeometry, matGreen ), [ 0, 0.8, 0 ]],\n\t\t\t[ new Line( lineGeometry, matLineGreen ), null, [ 0, 0, Math.PI / 2 ], [ 0.8, 1, 1 ]]\n\t\t],\n\t\tZ: [\n\t\t\t[ new Mesh( scaleHandleGeometry, matBlue ), [ 0, 0, 0.8 ], [ Math.PI / 2, 0, 0 ]],\n\t\t\t[ new Line( lineGeometry, matLineBlue ), null, [ 0, - Math.PI / 2, 0 ], [ 0.8, 1, 1 ]]\n\t\t],\n\t\tXY: [\n\t\t\t[ new Mesh( scaleHandleGeometry, matYellowTransparent ), [ 0.85, 0.85, 0 ], null, [ 2, 2, 0.2 ]],\n\t\t\t[ new Line( lineGeometry, matLineYellow ), [ 0.855, 0.98, 0 ], null, [ 0.125, 1, 1 ]],\n\t\t\t[ new Line( lineGeometry, matLineYellow ), [ 0.98, 0.855, 0 ], [ 0, 0, Math.PI / 2 ], [ 0.125, 1, 1 ]]\n\t\t],\n\t\tYZ: [\n\t\t\t[ new Mesh( scaleHandleGeometry, matCyanTransparent ), [ 0, 0.85, 0.85 ], null, [ 0.2, 2, 2 ]],\n\t\t\t[ new Line( lineGeometry, matLineCyan ), [ 0, 0.855, 0.98 ], [ 0, 0, Math.PI / 2 ], [ 0.125, 1, 1 ]],\n\t\t\t[ new Line( lineGeometry, matLineCyan ), [ 0, 0.98, 0.855 ], [ 0, - Math.PI / 2, 0 ], [ 0.125, 1, 1 ]]\n\t\t],\n\t\tXZ: [\n\t\t\t[ new Mesh( scaleHandleGeometry, matMagentaTransparent ), [ 0.85, 0, 0.85 ], null, [ 2, 0.2, 2 ]],\n\t\t\t[ new Line( lineGeometry, matLineMagenta ), [ 0.855, 0, 0.98 ], null, [ 0.125, 1, 1 ]],\n\t\t\t[ new Line( lineGeometry, matLineMagenta ), [ 0.98, 0, 0.855 ], [ 0, - Math.PI / 2, 0 ], [ 0.125, 1, 1 ]]\n\t\t],\n\t\tXYZX: [\n\t\t\t[ new Mesh( new BoxBufferGeometry( 0.125, 0.125, 0.125 ), matWhiteTransparent.clone() ), [ 1.1, 0, 0 ]],\n\t\t],\n\t\tXYZY: [\n\t\t\t[ new Mesh( new BoxBufferGeometry( 0.125, 0.125, 0.125 ), matWhiteTransparent.clone() ), [ 0, 1.1, 0 ]],\n\t\t],\n\t\tXYZZ: [\n\t\t\t[ new Mesh( new BoxBufferGeometry( 0.125, 0.125, 0.125 ), matWhiteTransparent.clone() ), [ 0, 0, 1.1 ]],\n\t\t]\n\t};\n\n\tvar pickerScale = {\n\t\tX: [\n\t\t\t[ new Mesh( new CylinderBufferGeometry( 0.2, 0, 0.8, 4, 1, false ), matInvisible ), [ 0.5, 0, 0 ], [ 0, 0, - Math.PI / 2 ]]\n\t\t],\n\t\tY: [\n\t\t\t[ new Mesh( new CylinderBufferGeometry( 0.2, 0, 0.8, 4, 1, false ), matInvisible ), [ 0, 0.5, 0 ]]\n\t\t],\n\t\tZ: [\n\t\t\t[ new Mesh( new CylinderBufferGeometry( 0.2, 0, 0.8, 4, 1, false ), matInvisible ), [ 0, 0, 0.5 ], [ Math.PI / 2, 0, 0 ]]\n\t\t],\n\t\tXY: [\n\t\t\t[ new Mesh( scaleHandleGeometry, matInvisible ), [ 0.85, 0.85, 0 ], null, [ 3, 3, 0.2 ]],\n\t\t],\n\t\tYZ: [\n\t\t\t[ new Mesh( scaleHandleGeometry, matInvisible ), [ 0, 0.85, 0.85 ], null, [ 0.2, 3, 3 ]],\n\t\t],\n\t\tXZ: [\n\t\t\t[ new Mesh( scaleHandleGeometry, matInvisible ), [ 0.85, 0, 0.85 ], null, [ 3, 0.2, 3 ]],\n\t\t],\n\t\tXYZX: [\n\t\t\t[ new Mesh( new BoxBufferGeometry( 0.2, 0.2, 0.2 ), matInvisible ), [ 1.1, 0, 0 ]],\n\t\t],\n\t\tXYZY: [\n\t\t\t[ new Mesh( new BoxBufferGeometry( 0.2, 0.2, 0.2 ), matInvisible ), [ 0, 1.1, 0 ]],\n\t\t],\n\t\tXYZZ: [\n\t\t\t[ new Mesh( new BoxBufferGeometry( 0.2, 0.2, 0.2 ), matInvisible ), [ 0, 0, 1.1 ]],\n\t\t]\n\t};\n\n\tvar helperScale = {\n\t\tX: [\n\t\t\t[ new Line( lineGeometry, matHelper.clone() ), [ - 1e3, 0, 0 ], null, [ 1e6, 1, 1 ], 'helper' ]\n\t\t],\n\t\tY: [\n\t\t\t[ new Line( lineGeometry, matHelper.clone() ), [ 0, - 1e3, 0 ], [ 0, 0, Math.PI / 2 ], [ 1e6, 1, 1 ], 'helper' ]\n\t\t],\n\t\tZ: [\n\t\t\t[ new Line( lineGeometry, matHelper.clone() ), [ 0, 0, - 1e3 ], [ 0, - Math.PI / 2, 0 ], [ 1e6, 1, 1 ], 'helper' ]\n\t\t]\n\t};\n\n\t// Creates an Object3D with gizmos described in custom hierarchy definition.\n\n\tvar setupGizmo = function ( gizmoMap ) {\n\n\t\tvar gizmo = new Object3D();\n\n\t\tfor ( var name in gizmoMap ) {\n\n\t\t\tfor ( var i = gizmoMap[ name ].length; i --; ) {\n\n\t\t\t\tvar object = gizmoMap[ name ][ i ][ 0 ].clone();\n\t\t\t\tvar position = gizmoMap[ name ][ i ][ 1 ];\n\t\t\t\tvar rotation = gizmoMap[ name ][ i ][ 2 ];\n\t\t\t\tvar scale = gizmoMap[ name ][ i ][ 3 ];\n\t\t\t\tvar tag = gizmoMap[ name ][ i ][ 4 ];\n\n\t\t\t\t// name and tag properties are essential for picking and updating logic.\n\t\t\t\tobject.name = name;\n\t\t\t\tobject.tag = tag;\n\n\t\t\t\tif ( position ) {\n\n\t\t\t\t\tobject.position.set( position[ 0 ], position[ 1 ], position[ 2 ] );\n\n\t\t\t\t}\n\n\t\t\t\tif ( rotation ) {\n\n\t\t\t\t\tobject.rotation.set( rotation[ 0 ], rotation[ 1 ], rotation[ 2 ] );\n\n\t\t\t\t}\n\n\t\t\t\tif ( scale ) {\n\n\t\t\t\t\tobject.scale.set( scale[ 0 ], scale[ 1 ], scale[ 2 ] );\n\n\t\t\t\t}\n\n\t\t\t\tobject.updateMatrix();\n\n\t\t\t\tvar tempGeometry = object.geometry.clone();\n\t\t\t\ttempGeometry.applyMatrix4( object.matrix );\n\t\t\t\tobject.geometry = tempGeometry;\n\t\t\t\tobject.renderOrder = Infinity;\n\n\t\t\t\tobject.position.set( 0, 0, 0 );\n\t\t\t\tobject.rotation.set( 0, 0, 0 );\n\t\t\t\tobject.scale.set( 1, 1, 1 );\n\n\t\t\t\tgizmo.add( object );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn gizmo;\n\n\t};\n\n\t// Reusable utility variables\n\n\tvar tempVector = new Vector3( 0, 0, 0 );\n\tvar tempEuler = new Euler();\n\tvar alignVector = new Vector3( 0, 1, 0 );\n\tvar zeroVector = new Vector3( 0, 0, 0 );\n\tvar lookAtMatrix = new Matrix4();\n\tvar tempQuaternion = new Quaternion();\n\tvar tempQuaternion2 = new Quaternion();\n\tvar identityQuaternion = new Quaternion();\n\n\tvar unitX = new Vector3( 1, 0, 0 );\n\tvar unitY = new Vector3( 0, 1, 0 );\n\tvar unitZ = new Vector3( 0, 0, 1 );\n\n\t// Gizmo creation\n\n\tthis.gizmo = {};\n\tthis.picker = {};\n\tthis.helper = {};\n\n\tthis.add( this.gizmo[ 'translate' ] = setupGizmo( gizmoTranslate ) );\n\tthis.add( this.gizmo[ 'rotate' ] = setupGizmo( gizmoRotate ) );\n\tthis.add( this.gizmo[ 'scale' ] = setupGizmo( gizmoScale ) );\n\tthis.add( this.picker[ 'translate' ] = setupGizmo( pickerTranslate ) );\n\tthis.add( this.picker[ 'rotate' ] = setupGizmo( pickerRotate ) );\n\tthis.add( this.picker[ 'scale' ] = setupGizmo( pickerScale ) );\n\tthis.add( this.helper[ 'translate' ] = setupGizmo( helperTranslate ) );\n\tthis.add( this.helper[ 'rotate' ] = setupGizmo( helperRotate ) );\n\tthis.add( this.helper[ 'scale' ] = setupGizmo( helperScale ) );\n\n\t// Pickers should be hidden always\n\n\tthis.picker[ 'translate' ].visible = false;\n\tthis.picker[ 'rotate' ].visible = false;\n\tthis.picker[ 'scale' ].visible = false;\n\n\t// updateMatrixWorld will update transformations and appearance of individual handles\n\n\tthis.updateMatrixWorld = function () {\n\n\t\tvar space = this.space;\n\n\t\tif ( this.mode === 'scale' ) space = 'local'; // scale always oriented to local rotation\n\n\t\tvar quaternion = space === 'local' ? this.worldQuaternion : identityQuaternion;\n\n\t\t// Show only gizmos for current transform mode\n\n\t\tthis.gizmo[ 'translate' ].visible = this.mode === 'translate';\n\t\tthis.gizmo[ 'rotate' ].visible = this.mode === 'rotate';\n\t\tthis.gizmo[ 'scale' ].visible = this.mode === 'scale';\n\n\t\tthis.helper[ 'translate' ].visible = this.mode === 'translate';\n\t\tthis.helper[ 'rotate' ].visible = this.mode === 'rotate';\n\t\tthis.helper[ 'scale' ].visible = this.mode === 'scale';\n\n\n\t\tvar handles = [];\n\t\thandles = handles.concat( this.picker[ this.mode ].children );\n\t\thandles = handles.concat( this.gizmo[ this.mode ].children );\n\t\thandles = handles.concat( this.helper[ this.mode ].children );\n\n\t\tfor ( var i = 0; i < handles.length; i ++ ) {\n\n\t\t\tvar handle = handles[ i ];\n\n\t\t\t// hide aligned to camera\n\n\t\t\thandle.visible = true;\n\t\t\thandle.rotation.set( 0, 0, 0 );\n\t\t\thandle.position.copy( this.worldPosition );\n\n\t\t\tvar factor;\n\n\t\t\tif ( this.camera.isOrthographicCamera ) {\n\n\t\t\t\tfactor = ( this.camera.top - this.camera.bottom ) / this.camera.zoom;\n\n\t\t\t} else {\n\n\t\t\t\tfactor = this.worldPosition.distanceTo( this.cameraPosition ) * Math.min( 1.9 * Math.tan( Math.PI * this.camera.fov / 360 ) / this.camera.zoom, 7 );\n\n\t\t\t}\n\n\t\t\thandle.scale.set( 1, 1, 1 ).multiplyScalar( factor * this.size / 7 );\n\n\t\t\t// TODO: simplify helpers and consider decoupling from gizmo\n\n\t\t\tif ( handle.tag === 'helper' ) {\n\n\t\t\t\thandle.visible = false;\n\n\t\t\t\tif ( handle.name === 'AXIS' ) {\n\n\t\t\t\t\thandle.position.copy( this.worldPositionStart );\n\t\t\t\t\thandle.visible = !! this.axis;\n\n\t\t\t\t\tif ( this.axis === 'X' ) {\n\n\t\t\t\t\t\ttempQuaternion.setFromEuler( tempEuler.set( 0, 0, 0 ) );\n\t\t\t\t\t\thandle.quaternion.copy( quaternion ).multiply( tempQuaternion );\n\n\t\t\t\t\t\tif ( Math.abs( alignVector.copy( unitX ).applyQuaternion( quaternion ).dot( this.eye ) ) > 0.9 ) {\n\n\t\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( this.axis === 'Y' ) {\n\n\t\t\t\t\t\ttempQuaternion.setFromEuler( tempEuler.set( 0, 0, Math.PI / 2 ) );\n\t\t\t\t\t\thandle.quaternion.copy( quaternion ).multiply( tempQuaternion );\n\n\t\t\t\t\t\tif ( Math.abs( alignVector.copy( unitY ).applyQuaternion( quaternion ).dot( this.eye ) ) > 0.9 ) {\n\n\t\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( this.axis === 'Z' ) {\n\n\t\t\t\t\t\ttempQuaternion.setFromEuler( tempEuler.set( 0, Math.PI / 2, 0 ) );\n\t\t\t\t\t\thandle.quaternion.copy( quaternion ).multiply( tempQuaternion );\n\n\t\t\t\t\t\tif ( Math.abs( alignVector.copy( unitZ ).applyQuaternion( quaternion ).dot( this.eye ) ) > 0.9 ) {\n\n\t\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( this.axis === 'XYZE' ) {\n\n\t\t\t\t\t\ttempQuaternion.setFromEuler( tempEuler.set( 0, Math.PI / 2, 0 ) );\n\t\t\t\t\t\talignVector.copy( this.rotationAxis );\n\t\t\t\t\t\thandle.quaternion.setFromRotationMatrix( lookAtMatrix.lookAt( zeroVector, alignVector, unitY ) );\n\t\t\t\t\t\thandle.quaternion.multiply( tempQuaternion );\n\t\t\t\t\t\thandle.visible = this.dragging;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( this.axis === 'E' ) {\n\n\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t}\n\n\n\t\t\t\t} else if ( handle.name === 'START' ) {\n\n\t\t\t\t\thandle.position.copy( this.worldPositionStart );\n\t\t\t\t\thandle.visible = this.dragging;\n\n\t\t\t\t} else if ( handle.name === 'END' ) {\n\n\t\t\t\t\thandle.position.copy( this.worldPosition );\n\t\t\t\t\thandle.visible = this.dragging;\n\n\t\t\t\t} else if ( handle.name === 'DELTA' ) {\n\n\t\t\t\t\thandle.position.copy( this.worldPositionStart );\n\t\t\t\t\thandle.quaternion.copy( this.worldQuaternionStart );\n\t\t\t\t\ttempVector.set( 1e-10, 1e-10, 1e-10 ).add( this.worldPositionStart ).sub( this.worldPosition ).multiplyScalar( - 1 );\n\t\t\t\t\ttempVector.applyQuaternion( this.worldQuaternionStart.clone().invert() );\n\t\t\t\t\thandle.scale.copy( tempVector );\n\t\t\t\t\thandle.visible = this.dragging;\n\n\t\t\t\t} else {\n\n\t\t\t\t\thandle.quaternion.copy( quaternion );\n\n\t\t\t\t\tif ( this.dragging ) {\n\n\t\t\t\t\t\thandle.position.copy( this.worldPositionStart );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\thandle.position.copy( this.worldPosition );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( this.axis ) {\n\n\t\t\t\t\t\thandle.visible = this.axis.search( handle.name ) !== - 1;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\t// If updating helper, skip rest of the loop\n\t\t\t\tcontinue;\n\n\t\t\t}\n\n\t\t\t// Align handles to current local or world rotation\n\n\t\t\thandle.quaternion.copy( quaternion );\n\n\t\t\tif ( this.mode === 'translate' || this.mode === 'scale' ) {\n\n\t\t\t\t// Hide translate and scale axis facing the camera\n\n\t\t\t\tvar AXIS_HIDE_TRESHOLD = 0.99;\n\t\t\t\tvar PLANE_HIDE_TRESHOLD = 0.2;\n\t\t\t\tvar AXIS_FLIP_TRESHOLD = 0.0;\n\n\n\t\t\t\tif ( handle.name === 'X' || handle.name === 'XYZX' ) {\n\n\t\t\t\t\tif ( Math.abs( alignVector.copy( unitX ).applyQuaternion( quaternion ).dot( this.eye ) ) > AXIS_HIDE_TRESHOLD ) {\n\n\t\t\t\t\t\thandle.scale.set( 1e-10, 1e-10, 1e-10 );\n\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tif ( handle.name === 'Y' || handle.name === 'XYZY' ) {\n\n\t\t\t\t\tif ( Math.abs( alignVector.copy( unitY ).applyQuaternion( quaternion ).dot( this.eye ) ) > AXIS_HIDE_TRESHOLD ) {\n\n\t\t\t\t\t\thandle.scale.set( 1e-10, 1e-10, 1e-10 );\n\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tif ( handle.name === 'Z' || handle.name === 'XYZZ' ) {\n\n\t\t\t\t\tif ( Math.abs( alignVector.copy( unitZ ).applyQuaternion( quaternion ).dot( this.eye ) ) > AXIS_HIDE_TRESHOLD ) {\n\n\t\t\t\t\t\thandle.scale.set( 1e-10, 1e-10, 1e-10 );\n\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tif ( handle.name === 'XY' ) {\n\n\t\t\t\t\tif ( Math.abs( alignVector.copy( unitZ ).applyQuaternion( quaternion ).dot( this.eye ) ) < PLANE_HIDE_TRESHOLD ) {\n\n\t\t\t\t\t\thandle.scale.set( 1e-10, 1e-10, 1e-10 );\n\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tif ( handle.name === 'YZ' ) {\n\n\t\t\t\t\tif ( Math.abs( alignVector.copy( unitX ).applyQuaternion( quaternion ).dot( this.eye ) ) < PLANE_HIDE_TRESHOLD ) {\n\n\t\t\t\t\t\thandle.scale.set( 1e-10, 1e-10, 1e-10 );\n\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tif ( handle.name === 'XZ' ) {\n\n\t\t\t\t\tif ( Math.abs( alignVector.copy( unitY ).applyQuaternion( quaternion ).dot( this.eye ) ) < PLANE_HIDE_TRESHOLD ) {\n\n\t\t\t\t\t\thandle.scale.set( 1e-10, 1e-10, 1e-10 );\n\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\t// Flip translate and scale axis ocluded behind another axis\n\n\t\t\t\tif ( handle.name.search( 'X' ) !== - 1 ) {\n\n\t\t\t\t\tif ( alignVector.copy( unitX ).applyQuaternion( quaternion ).dot( this.eye ) < AXIS_FLIP_TRESHOLD ) {\n\n\t\t\t\t\t\tif ( handle.tag === 'fwd' ) {\n\n\t\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\thandle.scale.x *= - 1;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t} else if ( handle.tag === 'bwd' ) {\n\n\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tif ( handle.name.search( 'Y' ) !== - 1 ) {\n\n\t\t\t\t\tif ( alignVector.copy( unitY ).applyQuaternion( quaternion ).dot( this.eye ) < AXIS_FLIP_TRESHOLD ) {\n\n\t\t\t\t\t\tif ( handle.tag === 'fwd' ) {\n\n\t\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\thandle.scale.y *= - 1;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t} else if ( handle.tag === 'bwd' ) {\n\n\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tif ( handle.name.search( 'Z' ) !== - 1 ) {\n\n\t\t\t\t\tif ( alignVector.copy( unitZ ).applyQuaternion( quaternion ).dot( this.eye ) < AXIS_FLIP_TRESHOLD ) {\n\n\t\t\t\t\t\tif ( handle.tag === 'fwd' ) {\n\n\t\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\thandle.scale.z *= - 1;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t} else if ( handle.tag === 'bwd' ) {\n\n\t\t\t\t\t\thandle.visible = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t} else if ( this.mode === 'rotate' ) {\n\n\t\t\t\t// Align handles to current local or world rotation\n\n\t\t\t\ttempQuaternion2.copy( quaternion );\n\t\t\t\talignVector.copy( this.eye ).applyQuaternion( tempQuaternion.copy( quaternion ).invert() );\n\n\t\t\t\tif ( handle.name.search( 'E' ) !== - 1 ) {\n\n\t\t\t\t\thandle.quaternion.setFromRotationMatrix( lookAtMatrix.lookAt( this.eye, zeroVector, unitY ) );\n\n\t\t\t\t}\n\n\t\t\t\tif ( handle.name === 'X' ) {\n\n\t\t\t\t\ttempQuaternion.setFromAxisAngle( unitX, Math.atan2( - alignVector.y, alignVector.z ) );\n\t\t\t\t\ttempQuaternion.multiplyQuaternions( tempQuaternion2, tempQuaternion );\n\t\t\t\t\thandle.quaternion.copy( tempQuaternion );\n\n\t\t\t\t}\n\n\t\t\t\tif ( handle.name === 'Y' ) {\n\n\t\t\t\t\ttempQuaternion.setFromAxisAngle( unitY, Math.atan2( alignVector.x, alignVector.z ) );\n\t\t\t\t\ttempQuaternion.multiplyQuaternions( tempQuaternion2, tempQuaternion );\n\t\t\t\t\thandle.quaternion.copy( tempQuaternion );\n\n\t\t\t\t}\n\n\t\t\t\tif ( handle.name === 'Z' ) {\n\n\t\t\t\t\ttempQuaternion.setFromAxisAngle( unitZ, Math.atan2( alignVector.y, alignVector.x ) );\n\t\t\t\t\ttempQuaternion.multiplyQuaternions( tempQuaternion2, tempQuaternion );\n\t\t\t\t\thandle.quaternion.copy( tempQuaternion );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// Hide disabled axes\n\t\t\thandle.visible = handle.visible && ( handle.name.indexOf( 'X' ) === - 1 || this.showX );\n\t\t\thandle.visible = handle.visible && ( handle.name.indexOf( 'Y' ) === - 1 || this.showY );\n\t\t\thandle.visible = handle.visible && ( handle.name.indexOf( 'Z' ) === - 1 || this.showZ );\n\t\t\thandle.visible = handle.visible && ( handle.name.indexOf( 'E' ) === - 1 || ( this.showX && this.showY && this.showZ ) );\n\n\t\t\t// highlight selected axis\n\n\t\t\thandle.material._opacity = handle.material._opacity || handle.material.opacity;\n\t\t\thandle.material._color = handle.material._color || handle.material.color.clone();\n\n\t\t\thandle.material.color.copy( handle.material._color );\n\t\t\thandle.material.opacity = handle.material._opacity;\n\n\t\t\tif ( ! this.enabled ) {\n\n\t\t\t\thandle.material.opacity *= 0.5;\n\t\t\t\thandle.material.color.lerp( new Color( 1, 1, 1 ), 0.5 );\n\n\t\t\t} else if ( this.axis ) {\n\n\t\t\t\tif ( handle.name === this.axis ) {\n\n\t\t\t\t\thandle.material.opacity = 1.0;\n\t\t\t\t\thandle.material.color.lerp( new Color( 1, 1, 1 ), 0.5 );\n\n\t\t\t\t} else if ( this.axis.split( '' ).some( function ( a ) {\n\n\t\t\t\t\treturn handle.name === a;\n\n\t\t\t\t} ) ) {\n\n\t\t\t\t\thandle.material.opacity = 1.0;\n\t\t\t\t\thandle.material.color.lerp( new Color( 1, 1, 1 ), 0.5 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\thandle.material.opacity *= 0.25;\n\t\t\t\t\thandle.material.color.lerp( new Color( 1, 1, 1 ), 0.5 );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tObject3D.prototype.updateMatrixWorld.call( this );\n\n\t};\n\n};\n\nTransformControlsGizmo.prototype = Object.assign( Object.create( Object3D.prototype ), {\n\n\tconstructor: TransformControlsGizmo,\n\n\tisTransformControlsGizmo: true\n\n} );\n\n\nvar TransformControlsPlane = function () {\n\n\t'use strict';\n\n\tMesh.call( this,\n\t\tnew PlaneBufferGeometry( 100000, 100000, 2, 2 ),\n\t\tnew MeshBasicMaterial( { visible: false, wireframe: true, side: DoubleSide, transparent: true, opacity: 0.1, toneMapped: false } )\n\t);\n\n\tthis.type = 'TransformControlsPlane';\n\n\tvar unitX = new Vector3( 1, 0, 0 );\n\tvar unitY = new Vector3( 0, 1, 0 );\n\tvar unitZ = new Vector3( 0, 0, 1 );\n\n\tvar tempVector = new Vector3();\n\tvar dirVector = new Vector3();\n\tvar alignVector = new Vector3();\n\tvar tempMatrix = new Matrix4();\n\tvar identityQuaternion = new Quaternion();\n\n\tthis.updateMatrixWorld = function () {\n\n\t\tvar space = this.space;\n\n\t\tthis.position.copy( this.worldPosition );\n\n\t\tif ( this.mode === 'scale' ) space = 'local'; // scale always oriented to local rotation\n\n\t\tunitX.set( 1, 0, 0 ).applyQuaternion( space === 'local' ? this.worldQuaternion : identityQuaternion );\n\t\tunitY.set( 0, 1, 0 ).applyQuaternion( space === 'local' ? this.worldQuaternion : identityQuaternion );\n\t\tunitZ.set( 0, 0, 1 ).applyQuaternion( space === 'local' ? this.worldQuaternion : identityQuaternion );\n\n\t\t// Align the plane for current transform mode, axis and space.\n\n\t\talignVector.copy( unitY );\n\n\t\tswitch ( this.mode ) {\n\n\t\t\tcase 'translate':\n\t\t\tcase 'scale':\n\t\t\t\tswitch ( this.axis ) {\n\n\t\t\t\t\tcase 'X':\n\t\t\t\t\t\talignVector.copy( this.eye ).cross( unitX );\n\t\t\t\t\t\tdirVector.copy( unitX ).cross( alignVector );\n\t\t\t\t\t\tbreak;\n\t\t\t\t\tcase 'Y':\n\t\t\t\t\t\talignVector.copy( this.eye ).cross( unitY );\n\t\t\t\t\t\tdirVector.copy( unitY ).cross( alignVector );\n\t\t\t\t\t\tbreak;\n\t\t\t\t\tcase 'Z':\n\t\t\t\t\t\talignVector.copy( this.eye ).cross( unitZ );\n\t\t\t\t\t\tdirVector.copy( unitZ ).cross( alignVector );\n\t\t\t\t\t\tbreak;\n\t\t\t\t\tcase 'XY':\n\t\t\t\t\t\tdirVector.copy( unitZ );\n\t\t\t\t\t\tbreak;\n\t\t\t\t\tcase 'YZ':\n\t\t\t\t\t\tdirVector.copy( unitX );\n\t\t\t\t\t\tbreak;\n\t\t\t\t\tcase 'XZ':\n\t\t\t\t\t\talignVector.copy( unitZ );\n\t\t\t\t\t\tdirVector.copy( unitY );\n\t\t\t\t\t\tbreak;\n\t\t\t\t\tcase 'XYZ':\n\t\t\t\t\tcase 'E':\n\t\t\t\t\t\tdirVector.set( 0, 0, 0 );\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\t\t\tcase 'rotate':\n\t\t\tdefault:\n\t\t\t\t// special case for rotate\n\t\t\t\tdirVector.set( 0, 0, 0 );\n\n\t\t}\n\n\t\tif ( dirVector.length() === 0 ) {\n\n\t\t\t// If in rotate mode, make the plane parallel to camera\n\t\t\tthis.quaternion.copy( this.cameraQuaternion );\n\n\t\t} else {\n\n\t\t\ttempMatrix.lookAt( tempVector.set( 0, 0, 0 ), dirVector, alignVector );\n\n\t\t\tthis.quaternion.setFromRotationMatrix( tempMatrix );\n\n\t\t}\n\n\t\tObject3D.prototype.updateMatrixWorld.call( this );\n\n\t};\n\n};\n\nTransformControlsPlane.prototype = Object.assign( Object.create( Mesh.prototype ), {\n\n\tconstructor: TransformControlsPlane,\n\n\tisTransformControlsPlane: true\n\n} );\n\nexport { TransformControls, TransformControlsGizmo, TransformControlsPlane };\n","import {\n\tCurve,\n\tVector3,\n\tVector4\n} from '../../../build/three.module.js';\nimport { NURBSUtils } from '../curves/NURBSUtils.js';\n\n/**\n * NURBS curve object\n *\n * Derives from Curve, overriding getPoint and getTangent.\n *\n * Implementation is based on (x, y [, z=0 [, w=1]]) control points with w=weight.\n *\n **/\n\nvar NURBSCurve = function ( degree, knots /* array of reals */, controlPoints /* array of Vector(2|3|4) */, startKnot /* index in knots */, endKnot /* index in knots */ ) {\n\n\tCurve.call( this );\n\n\tthis.degree = degree;\n\tthis.knots = knots;\n\tthis.controlPoints = [];\n\t// Used by periodic NURBS to remove hidden spans\n\tthis.startKnot = startKnot || 0;\n\tthis.endKnot = endKnot || ( this.knots.length - 1 );\n\tfor ( var i = 0; i < controlPoints.length; ++ i ) {\n\n\t\t// ensure Vector4 for control points\n\t\tvar point = controlPoints[ i ];\n\t\tthis.controlPoints[ i ] = new Vector4( point.x, point.y, point.z, point.w );\n\n\t}\n\n};\n\n\nNURBSCurve.prototype = Object.create( Curve.prototype );\nNURBSCurve.prototype.constructor = NURBSCurve;\n\n\nNURBSCurve.prototype.getPoint = function ( t, optionalTarget ) {\n\n\tvar point = optionalTarget || new Vector3();\n\n\tvar u = this.knots[ this.startKnot ] + t * ( this.knots[ this.endKnot ] - this.knots[ this.startKnot ] ); // linear mapping t->u\n\n\t// following results in (wx, wy, wz, w) homogeneous point\n\tvar hpoint = NURBSUtils.calcBSplinePoint( this.degree, this.knots, this.controlPoints, u );\n\n\tif ( hpoint.w != 1.0 ) {\n\n\t\t// project to 3D space: (wx, wy, wz, w) -> (x, y, z, 1)\n\t\thpoint.divideScalar( hpoint.w );\n\n\t}\n\n\treturn point.set( hpoint.x, hpoint.y, hpoint.z );\n\n};\n\n\nNURBSCurve.prototype.getTangent = function ( t, optionalTarget ) {\n\n\tvar tangent = optionalTarget || new Vector3();\n\n\tvar u = this.knots[ 0 ] + t * ( this.knots[ this.knots.length - 1 ] - this.knots[ 0 ] );\n\tvar ders = NURBSUtils.calcNURBSDerivatives( this.degree, this.knots, this.controlPoints, u, 1 );\n\ttangent.copy( ders[ 1 ] ).normalize();\n\n\treturn tangent;\n\n};\n\nexport { NURBSCurve };\n","import {\n\tVector3,\n\tVector4\n} from '../../../build/three.module.js';\n\n/**\n * NURBS utils\n *\n * See NURBSCurve and NURBSSurface.\n **/\n\n\n/**************************************************************\n *\tNURBS Utils\n **************************************************************/\n\nvar NURBSUtils = {\n\n\t/*\n\tFinds knot vector span.\n\n\tp : degree\n\tu : parametric value\n\tU : knot vector\n\n\treturns the span\n\t*/\n\tfindSpan: function ( p, u, U ) {\n\n\t\tvar n = U.length - p - 1;\n\n\t\tif ( u >= U[ n ] ) {\n\n\t\t\treturn n - 1;\n\n\t\t}\n\n\t\tif ( u <= U[ p ] ) {\n\n\t\t\treturn p;\n\n\t\t}\n\n\t\tvar low = p;\n\t\tvar high = n;\n\t\tvar mid = Math.floor( ( low + high ) / 2 );\n\n\t\twhile ( u < U[ mid ] || u >= U[ mid + 1 ] ) {\n\n\t\t\tif ( u < U[ mid ] ) {\n\n\t\t\t\thigh = mid;\n\n\t\t\t} else {\n\n\t\t\t\tlow = mid;\n\n\t\t\t}\n\n\t\t\tmid = Math.floor( ( low + high ) / 2 );\n\n\t\t}\n\n\t\treturn mid;\n\n\t},\n\n\n\t/*\n\tCalculate basis functions. See The NURBS Book, page 70, algorithm A2.2\n\n\tspan : span in which u lies\n\tu    : parametric point\n\tp    : degree\n\tU    : knot vector\n\n\treturns array[p+1] with basis functions values.\n\t*/\n\tcalcBasisFunctions: function ( span, u, p, U ) {\n\n\t\tvar N = [];\n\t\tvar left = [];\n\t\tvar right = [];\n\t\tN[ 0 ] = 1.0;\n\n\t\tfor ( var j = 1; j <= p; ++ j ) {\n\n\t\t\tleft[ j ] = u - U[ span + 1 - j ];\n\t\t\tright[ j ] = U[ span + j ] - u;\n\n\t\t\tvar saved = 0.0;\n\n\t\t\tfor ( var r = 0; r < j; ++ r ) {\n\n\t\t\t\tvar rv = right[ r + 1 ];\n\t\t\t\tvar lv = left[ j - r ];\n\t\t\t\tvar temp = N[ r ] / ( rv + lv );\n\t\t\t\tN[ r ] = saved + rv * temp;\n\t\t\t\tsaved = lv * temp;\n\n\t\t\t }\n\n\t\t\t N[ j ] = saved;\n\n\t\t }\n\n\t\t return N;\n\n\t},\n\n\n\t/*\n\tCalculate B-Spline curve points. See The NURBS Book, page 82, algorithm A3.1.\n\n\tp : degree of B-Spline\n\tU : knot vector\n\tP : control points (x, y, z, w)\n\tu : parametric point\n\n\treturns point for given u\n\t*/\n\tcalcBSplinePoint: function ( p, U, P, u ) {\n\n\t\tvar span = this.findSpan( p, u, U );\n\t\tvar N = this.calcBasisFunctions( span, u, p, U );\n\t\tvar C = new Vector4( 0, 0, 0, 0 );\n\n\t\tfor ( var j = 0; j <= p; ++ j ) {\n\n\t\t\tvar point = P[ span - p + j ];\n\t\t\tvar Nj = N[ j ];\n\t\t\tvar wNj = point.w * Nj;\n\t\t\tC.x += point.x * wNj;\n\t\t\tC.y += point.y * wNj;\n\t\t\tC.z += point.z * wNj;\n\t\t\tC.w += point.w * Nj;\n\n\t\t}\n\n\t\treturn C;\n\n\t},\n\n\n\t/*\n\tCalculate basis functions derivatives. See The NURBS Book, page 72, algorithm A2.3.\n\n\tspan : span in which u lies\n\tu    : parametric point\n\tp    : degree\n\tn    : number of derivatives to calculate\n\tU    : knot vector\n\n\treturns array[n+1][p+1] with basis functions derivatives\n\t*/\n\tcalcBasisFunctionDerivatives: function ( span, u, p, n, U ) {\n\n\t\tvar zeroArr = [];\n\t\tfor ( var i = 0; i <= p; ++ i )\n\t\t\tzeroArr[ i ] = 0.0;\n\n\t\tvar ders = [];\n\t\tfor ( var i = 0; i <= n; ++ i )\n\t\t\tders[ i ] = zeroArr.slice( 0 );\n\n\t\tvar ndu = [];\n\t\tfor ( var i = 0; i <= p; ++ i )\n\t\t\tndu[ i ] = zeroArr.slice( 0 );\n\n\t\tndu[ 0 ][ 0 ] = 1.0;\n\n\t\tvar left = zeroArr.slice( 0 );\n\t\tvar right = zeroArr.slice( 0 );\n\n\t\tfor ( var j = 1; j <= p; ++ j ) {\n\n\t\t\tleft[ j ] = u - U[ span + 1 - j ];\n\t\t\tright[ j ] = U[ span + j ] - u;\n\n\t\t\tvar saved = 0.0;\n\n\t\t\tfor ( var r = 0; r < j; ++ r ) {\n\n\t\t\t\tvar rv = right[ r + 1 ];\n\t\t\t\tvar lv = left[ j - r ];\n\t\t\t\tndu[ j ][ r ] = rv + lv;\n\n\t\t\t\tvar temp = ndu[ r ][ j - 1 ] / ndu[ j ][ r ];\n\t\t\t\tndu[ r ][ j ] = saved + rv * temp;\n\t\t\t\tsaved = lv * temp;\n\n\t\t\t}\n\n\t\t\tndu[ j ][ j ] = saved;\n\n\t\t}\n\n\t\tfor ( var j = 0; j <= p; ++ j ) {\n\n\t\t\tders[ 0 ][ j ] = ndu[ j ][ p ];\n\n\t\t}\n\n\t\tfor ( var r = 0; r <= p; ++ r ) {\n\n\t\t\tvar s1 = 0;\n\t\t\tvar s2 = 1;\n\n\t\t\tvar a = [];\n\t\t\tfor ( var i = 0; i <= p; ++ i ) {\n\n\t\t\t\ta[ i ] = zeroArr.slice( 0 );\n\n\t\t\t}\n\n\t\t\ta[ 0 ][ 0 ] = 1.0;\n\n\t\t\tfor ( var k = 1; k <= n; ++ k ) {\n\n\t\t\t\tvar d = 0.0;\n\t\t\t\tvar rk = r - k;\n\t\t\t\tvar pk = p - k;\n\n\t\t\t\tif ( r >= k ) {\n\n\t\t\t\t\ta[ s2 ][ 0 ] = a[ s1 ][ 0 ] / ndu[ pk + 1 ][ rk ];\n\t\t\t\t\td = a[ s2 ][ 0 ] * ndu[ rk ][ pk ];\n\n\t\t\t\t}\n\n\t\t\t\tvar j1 = ( rk >= - 1 ) ? 1 : - rk;\n\t\t\t\tvar j2 = ( r - 1 <= pk ) ? k - 1 : p - r;\n\n\t\t\t\tfor ( var j = j1; j <= j2; ++ j ) {\n\n\t\t\t\t\ta[ s2 ][ j ] = ( a[ s1 ][ j ] - a[ s1 ][ j - 1 ] ) / ndu[ pk + 1 ][ rk + j ];\n\t\t\t\t\td += a[ s2 ][ j ] * ndu[ rk + j ][ pk ];\n\n\t\t\t\t}\n\n\t\t\t\tif ( r <= pk ) {\n\n\t\t\t\t\ta[ s2 ][ k ] = - a[ s1 ][ k - 1 ] / ndu[ pk + 1 ][ r ];\n\t\t\t\t\td += a[ s2 ][ k ] * ndu[ r ][ pk ];\n\n\t\t\t\t}\n\n\t\t\t\tders[ k ][ r ] = d;\n\n\t\t\t\tvar j = s1;\n\t\t\t\ts1 = s2;\n\t\t\t\ts2 = j;\n\n\t\t\t}\n\n\t\t}\n\n\t\tvar r = p;\n\n\t\tfor ( var k = 1; k <= n; ++ k ) {\n\n\t\t\tfor ( var j = 0; j <= p; ++ j ) {\n\n\t\t\t\tders[ k ][ j ] *= r;\n\n\t\t\t}\n\n\t\t\tr *= p - k;\n\n\t\t}\n\n\t\treturn ders;\n\n\t},\n\n\n\t/*\n\t\tCalculate derivatives of a B-Spline. See The NURBS Book, page 93, algorithm A3.2.\n\n\t\tp  : degree\n\t\tU  : knot vector\n\t\tP  : control points\n\t\tu  : Parametric points\n\t\tnd : number of derivatives\n\n\t\treturns array[d+1] with derivatives\n\t\t*/\n\tcalcBSplineDerivatives: function ( p, U, P, u, nd ) {\n\n\t\tvar du = nd < p ? nd : p;\n\t\tvar CK = [];\n\t\tvar span = this.findSpan( p, u, U );\n\t\tvar nders = this.calcBasisFunctionDerivatives( span, u, p, du, U );\n\t\tvar Pw = [];\n\n\t\tfor ( var i = 0; i < P.length; ++ i ) {\n\n\t\t\tvar point = P[ i ].clone();\n\t\t\tvar w = point.w;\n\n\t\t\tpoint.x *= w;\n\t\t\tpoint.y *= w;\n\t\t\tpoint.z *= w;\n\n\t\t\tPw[ i ] = point;\n\n\t\t}\n\n\t\tfor ( var k = 0; k <= du; ++ k ) {\n\n\t\t\tvar point = Pw[ span - p ].clone().multiplyScalar( nders[ k ][ 0 ] );\n\n\t\t\tfor ( var j = 1; j <= p; ++ j ) {\n\n\t\t\t\tpoint.add( Pw[ span - p + j ].clone().multiplyScalar( nders[ k ][ j ] ) );\n\n\t\t\t}\n\n\t\t\tCK[ k ] = point;\n\n\t\t}\n\n\t\tfor ( var k = du + 1; k <= nd + 1; ++ k ) {\n\n\t\t\tCK[ k ] = new Vector4( 0, 0, 0 );\n\n\t\t}\n\n\t\treturn CK;\n\n\t},\n\n\n\t/*\n\tCalculate \"K over I\"\n\n\treturns k!/(i!(k-i)!)\n\t*/\n\tcalcKoverI: function ( k, i ) {\n\n\t\tvar nom = 1;\n\n\t\tfor ( var j = 2; j <= k; ++ j ) {\n\n\t\t\tnom *= j;\n\n\t\t}\n\n\t\tvar denom = 1;\n\n\t\tfor ( var j = 2; j <= i; ++ j ) {\n\n\t\t\tdenom *= j;\n\n\t\t}\n\n\t\tfor ( var j = 2; j <= k - i; ++ j ) {\n\n\t\t\tdenom *= j;\n\n\t\t}\n\n\t\treturn nom / denom;\n\n\t},\n\n\n\t/*\n\tCalculate derivatives (0-nd) of rational curve. See The NURBS Book, page 127, algorithm A4.2.\n\n\tPders : result of function calcBSplineDerivatives\n\n\treturns array with derivatives for rational curve.\n\t*/\n\tcalcRationalCurveDerivatives: function ( Pders ) {\n\n\t\tvar nd = Pders.length;\n\t\tvar Aders = [];\n\t\tvar wders = [];\n\n\t\tfor ( var i = 0; i < nd; ++ i ) {\n\n\t\t\tvar point = Pders[ i ];\n\t\t\tAders[ i ] = new Vector3( point.x, point.y, point.z );\n\t\t\twders[ i ] = point.w;\n\n\t\t}\n\n\t\tvar CK = [];\n\n\t\tfor ( var k = 0; k < nd; ++ k ) {\n\n\t\t\tvar v = Aders[ k ].clone();\n\n\t\t\tfor ( var i = 1; i <= k; ++ i ) {\n\n\t\t\t\tv.sub( CK[ k - i ].clone().multiplyScalar( this.calcKoverI( k, i ) * wders[ i ] ) );\n\n\t\t\t}\n\n\t\t\tCK[ k ] = v.divideScalar( wders[ 0 ] );\n\n\t\t}\n\n\t\treturn CK;\n\n\t},\n\n\n\t/*\n\tCalculate NURBS curve derivatives. See The NURBS Book, page 127, algorithm A4.2.\n\n\tp  : degree\n\tU  : knot vector\n\tP  : control points in homogeneous space\n\tu  : parametric points\n\tnd : number of derivatives\n\n\treturns array with derivatives.\n\t*/\n\tcalcNURBSDerivatives: function ( p, U, P, u, nd ) {\n\n\t\tvar Pders = this.calcBSplineDerivatives( p, U, P, u, nd );\n\t\treturn this.calcRationalCurveDerivatives( Pders );\n\n\t},\n\n\n\t/*\n\tCalculate rational B-Spline surface point. See The NURBS Book, page 134, algorithm A4.3.\n\n\tp1, p2 : degrees of B-Spline surface\n\tU1, U2 : knot vectors\n\tP      : control points (x, y, z, w)\n\tu, v   : parametric values\n\n\treturns point for given (u, v)\n\t*/\n\tcalcSurfacePoint: function ( p, q, U, V, P, u, v, target ) {\n\n\t\tvar uspan = this.findSpan( p, u, U );\n\t\tvar vspan = this.findSpan( q, v, V );\n\t\tvar Nu = this.calcBasisFunctions( uspan, u, p, U );\n\t\tvar Nv = this.calcBasisFunctions( vspan, v, q, V );\n\t\tvar temp = [];\n\n\t\tfor ( var l = 0; l <= q; ++ l ) {\n\n\t\t\ttemp[ l ] = new Vector4( 0, 0, 0, 0 );\n\t\t\tfor ( var k = 0; k <= p; ++ k ) {\n\n\t\t\t\tvar point = P[ uspan - p + k ][ vspan - q + l ].clone();\n\t\t\t\tvar w = point.w;\n\t\t\t\tpoint.x *= w;\n\t\t\t\tpoint.y *= w;\n\t\t\t\tpoint.z *= w;\n\t\t\t\ttemp[ l ].add( point.multiplyScalar( Nu[ k ] ) );\n\n\t\t\t}\n\n\t\t}\n\n\t\tvar Sw = new Vector4( 0, 0, 0, 0 );\n\t\tfor ( var l = 0; l <= q; ++ l ) {\n\n\t\t\tSw.add( temp[ l ].multiplyScalar( Nv[ l ] ) );\n\n\t\t}\n\n\t\tSw.divideScalar( Sw.w );\n\t\ttarget.set( Sw.x, Sw.y, Sw.z );\n\n\t}\n\n};\n\nexport { NURBSUtils };\n","var Stats = function () {\n\n\tvar mode = 0;\n\n\tvar container = document.createElement( 'div' );\n\tcontainer.style.cssText = 'position:fixed;top:0;left:0;cursor:pointer;opacity:0.9;z-index:10000';\n\tcontainer.addEventListener( 'click', function ( event ) {\n\n\t\tevent.preventDefault();\n\t\tshowPanel( ++ mode % container.children.length );\n\n\t}, false );\n\n\t//\n\n\tfunction addPanel( panel ) {\n\n\t\tcontainer.appendChild( panel.dom );\n\t\treturn panel;\n\n\t}\n\n\tfunction showPanel( id ) {\n\n\t\tfor ( var i = 0; i < container.children.length; i ++ ) {\n\n\t\t\tcontainer.children[ i ].style.display = i === id ? 'block' : 'none';\n\n\t\t}\n\n\t\tmode = id;\n\n\t}\n\n\t//\n\n\tvar beginTime = ( performance || Date ).now(), prevTime = beginTime, frames = 0;\n\n\tvar fpsPanel = addPanel( new Stats.Panel( 'FPS', '#0ff', '#002' ) );\n\tvar msPanel = addPanel( new Stats.Panel( 'MS', '#0f0', '#020' ) );\n\n\tif ( self.performance && self.performance.memory ) {\n\n\t\tvar memPanel = addPanel( new Stats.Panel( 'MB', '#f08', '#201' ) );\n\n\t}\n\n\tshowPanel( 0 );\n\n\treturn {\n\n\t\tREVISION: 16,\n\n\t\tdom: container,\n\n\t\taddPanel: addPanel,\n\t\tshowPanel: showPanel,\n\n\t\tbegin: function () {\n\n\t\t\tbeginTime = ( performance || Date ).now();\n\n\t\t},\n\n\t\tend: function () {\n\n\t\t\tframes ++;\n\n\t\t\tvar time = ( performance || Date ).now();\n\n\t\t\tmsPanel.update( time - beginTime, 200 );\n\n\t\t\tif ( time >= prevTime + 1000 ) {\n\n\t\t\t\tfpsPanel.update( ( frames * 1000 ) / ( time - prevTime ), 100 );\n\n\t\t\t\tprevTime = time;\n\t\t\t\tframes = 0;\n\n\t\t\t\tif ( memPanel ) {\n\n\t\t\t\t\tvar memory = performance.memory;\n\t\t\t\t\tmemPanel.update( memory.usedJSHeapSize / 1048576, memory.jsHeapSizeLimit / 1048576 );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\treturn time;\n\n\t\t},\n\n\t\tupdate: function () {\n\n\t\t\tbeginTime = this.end();\n\n\t\t},\n\n\t\t// Backwards Compatibility\n\n\t\tdomElement: container,\n\t\tsetMode: showPanel\n\n\t};\n\n};\n\nStats.Panel = function ( name, fg, bg ) {\n\n\tvar min = Infinity, max = 0, round = Math.round;\n\tvar PR = round( window.devicePixelRatio || 1 );\n\n\tvar WIDTH = 80 * PR, HEIGHT = 48 * PR,\n\t\tTEXT_X = 3 * PR, TEXT_Y = 2 * PR,\n\t\tGRAPH_X = 3 * PR, GRAPH_Y = 15 * PR,\n\t\tGRAPH_WIDTH = 74 * PR, GRAPH_HEIGHT = 30 * PR;\n\n\tvar canvas = document.createElement( 'canvas' );\n\tcanvas.width = WIDTH;\n\tcanvas.height = HEIGHT;\n\tcanvas.style.cssText = 'width:80px;height:48px';\n\n\tvar context = canvas.getContext( '2d' );\n\tcontext.font = 'bold ' + ( 9 * PR ) + 'px Helvetica,Arial,sans-serif';\n\tcontext.textBaseline = 'top';\n\n\tcontext.fillStyle = bg;\n\tcontext.fillRect( 0, 0, WIDTH, HEIGHT );\n\n\tcontext.fillStyle = fg;\n\tcontext.fillText( name, TEXT_X, TEXT_Y );\n\tcontext.fillRect( GRAPH_X, GRAPH_Y, GRAPH_WIDTH, GRAPH_HEIGHT );\n\n\tcontext.fillStyle = bg;\n\tcontext.globalAlpha = 0.9;\n\tcontext.fillRect( GRAPH_X, GRAPH_Y, GRAPH_WIDTH, GRAPH_HEIGHT );\n\n\treturn {\n\n\t\tdom: canvas,\n\n\t\tupdate: function ( value, maxValue ) {\n\n\t\t\tmin = Math.min( min, value );\n\t\t\tmax = Math.max( max, value );\n\n\t\t\tcontext.fillStyle = bg;\n\t\t\tcontext.globalAlpha = 1;\n\t\t\tcontext.fillRect( 0, 0, WIDTH, GRAPH_Y );\n\t\t\tcontext.fillStyle = fg;\n\t\t\tcontext.fillText( round( value ) + ' ' + name + ' (' + round( min ) + '-' + round( max ) + ')', TEXT_X, TEXT_Y );\n\n\t\t\tcontext.drawImage( canvas, GRAPH_X + PR, GRAPH_Y, GRAPH_WIDTH - PR, GRAPH_HEIGHT, GRAPH_X, GRAPH_Y, GRAPH_WIDTH - PR, GRAPH_HEIGHT );\n\n\t\t\tcontext.fillRect( GRAPH_X + GRAPH_WIDTH - PR, GRAPH_Y, PR, GRAPH_HEIGHT );\n\n\t\t\tcontext.fillStyle = bg;\n\t\t\tcontext.globalAlpha = 0.9;\n\t\t\tcontext.fillRect( GRAPH_X + GRAPH_WIDTH - PR, GRAPH_Y, PR, round( ( 1 - ( value / maxValue ) ) * GRAPH_HEIGHT ) );\n\n\t\t}\n\n\t};\n\n};\n\nexport default Stats;\n","// Ported from Stefan Gustavson's java implementation\n// http://staffwww.itn.liu.se/~stegu/simplexnoise/simplexnoise.pdf\n// Read Stefan's excellent paper for details on how this code works.\n//\n// Sean McCullough banksean@gmail.com\n//\n// Added 4D noise\n\n/**\n * You can pass in a random number generator object if you like.\n * It is assumed to have a random() method.\n */\nvar SimplexNoise = function ( r ) {\n\n\tif ( r == undefined ) r = Math;\n\tthis.grad3 = [[ 1, 1, 0 ], [ - 1, 1, 0 ], [ 1, - 1, 0 ], [ - 1, - 1, 0 ],\n\t\t[ 1, 0, 1 ], [ - 1, 0, 1 ], [ 1, 0, - 1 ], [ - 1, 0, - 1 ],\n\t\t[ 0, 1, 1 ], [ 0, - 1, 1 ], [ 0, 1, - 1 ], [ 0, - 1, - 1 ]];\n\n\tthis.grad4 = [[ 0, 1, 1, 1 ], [ 0, 1, 1, - 1 ], [ 0, 1, - 1, 1 ], [ 0, 1, - 1, - 1 ],\n\t     [ 0, - 1, 1, 1 ], [ 0, - 1, 1, - 1 ], [ 0, - 1, - 1, 1 ], [ 0, - 1, - 1, - 1 ],\n\t     [ 1, 0, 1, 1 ], [ 1, 0, 1, - 1 ], [ 1, 0, - 1, 1 ], [ 1, 0, - 1, - 1 ],\n\t     [ - 1, 0, 1, 1 ], [ - 1, 0, 1, - 1 ], [ - 1, 0, - 1, 1 ], [ - 1, 0, - 1, - 1 ],\n\t     [ 1, 1, 0, 1 ], [ 1, 1, 0, - 1 ], [ 1, - 1, 0, 1 ], [ 1, - 1, 0, - 1 ],\n\t     [ - 1, 1, 0, 1 ], [ - 1, 1, 0, - 1 ], [ - 1, - 1, 0, 1 ], [ - 1, - 1, 0, - 1 ],\n\t     [ 1, 1, 1, 0 ], [ 1, 1, - 1, 0 ], [ 1, - 1, 1, 0 ], [ 1, - 1, - 1, 0 ],\n\t     [ - 1, 1, 1, 0 ], [ - 1, 1, - 1, 0 ], [ - 1, - 1, 1, 0 ], [ - 1, - 1, - 1, 0 ]];\n\n\tthis.p = [];\n\n\tfor ( var i = 0; i < 256; i ++ ) {\n\n\t\tthis.p[ i ] = Math.floor( r.random() * 256 );\n\n\t}\n\n\t// To remove the need for index wrapping, double the permutation table length\n\tthis.perm = [];\n\n\tfor ( var i = 0; i < 512; i ++ ) {\n\n\t\tthis.perm[ i ] = this.p[ i & 255 ];\n\n\t}\n\n\t// A lookup table to traverse the simplex around a given point in 4D.\n\t// Details can be found where this table is used, in the 4D noise method.\n\tthis.simplex = [\n\t\t[ 0, 1, 2, 3 ], [ 0, 1, 3, 2 ], [ 0, 0, 0, 0 ], [ 0, 2, 3, 1 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 1, 2, 3, 0 ],\n\t\t[ 0, 2, 1, 3 ], [ 0, 0, 0, 0 ], [ 0, 3, 1, 2 ], [ 0, 3, 2, 1 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 1, 3, 2, 0 ],\n\t\t[ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ],\n\t\t[ 1, 2, 0, 3 ], [ 0, 0, 0, 0 ], [ 1, 3, 0, 2 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 2, 3, 0, 1 ], [ 2, 3, 1, 0 ],\n\t\t[ 1, 0, 2, 3 ], [ 1, 0, 3, 2 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 2, 0, 3, 1 ], [ 0, 0, 0, 0 ], [ 2, 1, 3, 0 ],\n\t\t[ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ],\n\t\t[ 2, 0, 1, 3 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 3, 0, 1, 2 ], [ 3, 0, 2, 1 ], [ 0, 0, 0, 0 ], [ 3, 1, 2, 0 ],\n\t\t[ 2, 1, 0, 3 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 0, 0, 0, 0 ], [ 3, 1, 0, 2 ], [ 0, 0, 0, 0 ], [ 3, 2, 0, 1 ], [ 3, 2, 1, 0 ]];\n\n};\n\nSimplexNoise.prototype.dot = function ( g, x, y ) {\n\n\treturn g[ 0 ] * x + g[ 1 ] * y;\n\n};\n\nSimplexNoise.prototype.dot3 = function ( g, x, y, z ) {\n\n\treturn g[ 0 ] * x + g[ 1 ] * y + g[ 2 ] * z;\n\n};\n\nSimplexNoise.prototype.dot4 = function ( g, x, y, z, w ) {\n\n\treturn g[ 0 ] * x + g[ 1 ] * y + g[ 2 ] * z + g[ 3 ] * w;\n\n};\n\nSimplexNoise.prototype.noise = function ( xin, yin ) {\n\n\tvar n0, n1, n2; // Noise contributions from the three corners\n\t// Skew the input space to determine which simplex cell we're in\n\tvar F2 = 0.5 * ( Math.sqrt( 3.0 ) - 1.0 );\n\tvar s = ( xin + yin ) * F2; // Hairy factor for 2D\n\tvar i = Math.floor( xin + s );\n\tvar j = Math.floor( yin + s );\n\tvar G2 = ( 3.0 - Math.sqrt( 3.0 ) ) / 6.0;\n\tvar t = ( i + j ) * G2;\n\tvar X0 = i - t; // Unskew the cell origin back to (x,y) space\n\tvar Y0 = j - t;\n\tvar x0 = xin - X0; // The x,y distances from the cell origin\n\tvar y0 = yin - Y0;\n\t// For the 2D case, the simplex shape is an equilateral triangle.\n\t// Determine which simplex we are in.\n\tvar i1, j1; // Offsets for second (middle) corner of simplex in (i,j) coords\n\tif ( x0 > y0 ) {\n\n\t\ti1 = 1; j1 = 0;\n\n\t\t// lower triangle, XY order: (0,0)->(1,0)->(1,1)\n\n\t}\telse {\n\n\t\ti1 = 0; j1 = 1;\n\n\t} // upper triangle, YX order: (0,0)->(0,1)->(1,1)\n\n\t// A step of (1,0) in (i,j) means a step of (1-c,-c) in (x,y), and\n\t// a step of (0,1) in (i,j) means a step of (-c,1-c) in (x,y), where\n\t// c = (3-sqrt(3))/6\n\tvar x1 = x0 - i1 + G2; // Offsets for middle corner in (x,y) unskewed coords\n\tvar y1 = y0 - j1 + G2;\n\tvar x2 = x0 - 1.0 + 2.0 * G2; // Offsets for last corner in (x,y) unskewed coords\n\tvar y2 = y0 - 1.0 + 2.0 * G2;\n\t// Work out the hashed gradient indices of the three simplex corners\n\tvar ii = i & 255;\n\tvar jj = j & 255;\n\tvar gi0 = this.perm[ ii + this.perm[ jj ] ] % 12;\n\tvar gi1 = this.perm[ ii + i1 + this.perm[ jj + j1 ] ] % 12;\n\tvar gi2 = this.perm[ ii + 1 + this.perm[ jj + 1 ] ] % 12;\n\t// Calculate the contribution from the three corners\n\tvar t0 = 0.5 - x0 * x0 - y0 * y0;\n\tif ( t0 < 0 ) n0 = 0.0;\n\telse {\n\n\t\tt0 *= t0;\n\t\tn0 = t0 * t0 * this.dot( this.grad3[ gi0 ], x0, y0 ); // (x,y) of grad3 used for 2D gradient\n\n\t}\n\n\tvar t1 = 0.5 - x1 * x1 - y1 * y1;\n\tif ( t1 < 0 ) n1 = 0.0;\n\telse {\n\n\t\tt1 *= t1;\n\t\tn1 = t1 * t1 * this.dot( this.grad3[ gi1 ], x1, y1 );\n\n\t}\n\n\tvar t2 = 0.5 - x2 * x2 - y2 * y2;\n\tif ( t2 < 0 ) n2 = 0.0;\n\telse {\n\n\t\tt2 *= t2;\n\t\tn2 = t2 * t2 * this.dot( this.grad3[ gi2 ], x2, y2 );\n\n\t}\n\n\t// Add contributions from each corner to get the final noise value.\n\t// The result is scaled to return values in the interval [-1,1].\n\treturn 70.0 * ( n0 + n1 + n2 );\n\n};\n\n// 3D simplex noise\nSimplexNoise.prototype.noise3d = function ( xin, yin, zin ) {\n\n\tvar n0, n1, n2, n3; // Noise contributions from the four corners\n\t// Skew the input space to determine which simplex cell we're in\n\tvar F3 = 1.0 / 3.0;\n\tvar s = ( xin + yin + zin ) * F3; // Very nice and simple skew factor for 3D\n\tvar i = Math.floor( xin + s );\n\tvar j = Math.floor( yin + s );\n\tvar k = Math.floor( zin + s );\n\tvar G3 = 1.0 / 6.0; // Very nice and simple unskew factor, too\n\tvar t = ( i + j + k ) * G3;\n\tvar X0 = i - t; // Unskew the cell origin back to (x,y,z) space\n\tvar Y0 = j - t;\n\tvar Z0 = k - t;\n\tvar x0 = xin - X0; // The x,y,z distances from the cell origin\n\tvar y0 = yin - Y0;\n\tvar z0 = zin - Z0;\n\t// For the 3D case, the simplex shape is a slightly irregular tetrahedron.\n\t// Determine which simplex we are in.\n\tvar i1, j1, k1; // Offsets for second corner of simplex in (i,j,k) coords\n\tvar i2, j2, k2; // Offsets for third corner of simplex in (i,j,k) coords\n\tif ( x0 >= y0 ) {\n\n\t\tif ( y0 >= z0 ) {\n\n\t\t\ti1 = 1; j1 = 0; k1 = 0; i2 = 1; j2 = 1; k2 = 0;\n\n\t\t\t// X Y Z order\n\n\t\t} else if ( x0 >= z0 ) {\n\n\t\t\ti1 = 1; j1 = 0; k1 = 0; i2 = 1; j2 = 0; k2 = 1;\n\n\t\t\t// X Z Y order\n\n\t\t} else {\n\n\t\t\ti1 = 0; j1 = 0; k1 = 1; i2 = 1; j2 = 0; k2 = 1;\n\n\t\t} // Z X Y order\n\n\t} else { // x0<y0\n\n\t\tif ( y0 < z0 ) {\n\n\t\t\ti1 = 0; j1 = 0; k1 = 1; i2 = 0; j2 = 1; k2 = 1;\n\n\t\t\t// Z Y X order\n\n\t\t} else if ( x0 < z0 ) {\n\n\t\t\ti1 = 0; j1 = 1; k1 = 0; i2 = 0; j2 = 1; k2 = 1;\n\n\t\t\t// Y Z X order\n\n\t\t} else {\n\n\t\t\ti1 = 0; j1 = 1; k1 = 0; i2 = 1; j2 = 1; k2 = 0;\n\n\t\t} // Y X Z order\n\n\t}\n\n\t// A step of (1,0,0) in (i,j,k) means a step of (1-c,-c,-c) in (x,y,z),\n\t// a step of (0,1,0) in (i,j,k) means a step of (-c,1-c,-c) in (x,y,z), and\n\t// a step of (0,0,1) in (i,j,k) means a step of (-c,-c,1-c) in (x,y,z), where\n\t// c = 1/6.\n\tvar x1 = x0 - i1 + G3; // Offsets for second corner in (x,y,z) coords\n\tvar y1 = y0 - j1 + G3;\n\tvar z1 = z0 - k1 + G3;\n\tvar x2 = x0 - i2 + 2.0 * G3; // Offsets for third corner in (x,y,z) coords\n\tvar y2 = y0 - j2 + 2.0 * G3;\n\tvar z2 = z0 - k2 + 2.0 * G3;\n\tvar x3 = x0 - 1.0 + 3.0 * G3; // Offsets for last corner in (x,y,z) coords\n\tvar y3 = y0 - 1.0 + 3.0 * G3;\n\tvar z3 = z0 - 1.0 + 3.0 * G3;\n\t// Work out the hashed gradient indices of the four simplex corners\n\tvar ii = i & 255;\n\tvar jj = j & 255;\n\tvar kk = k & 255;\n\tvar gi0 = this.perm[ ii + this.perm[ jj + this.perm[ kk ] ] ] % 12;\n\tvar gi1 = this.perm[ ii + i1 + this.perm[ jj + j1 + this.perm[ kk + k1 ] ] ] % 12;\n\tvar gi2 = this.perm[ ii + i2 + this.perm[ jj + j2 + this.perm[ kk + k2 ] ] ] % 12;\n\tvar gi3 = this.perm[ ii + 1 + this.perm[ jj + 1 + this.perm[ kk + 1 ] ] ] % 12;\n\t// Calculate the contribution from the four corners\n\tvar t0 = 0.6 - x0 * x0 - y0 * y0 - z0 * z0;\n\tif ( t0 < 0 ) n0 = 0.0;\n\telse {\n\n\t\tt0 *= t0;\n\t\tn0 = t0 * t0 * this.dot3( this.grad3[ gi0 ], x0, y0, z0 );\n\n\t}\n\n\tvar t1 = 0.6 - x1 * x1 - y1 * y1 - z1 * z1;\n\tif ( t1 < 0 ) n1 = 0.0;\n\telse {\n\n\t\tt1 *= t1;\n\t\tn1 = t1 * t1 * this.dot3( this.grad3[ gi1 ], x1, y1, z1 );\n\n\t}\n\n\tvar t2 = 0.6 - x2 * x2 - y2 * y2 - z2 * z2;\n\tif ( t2 < 0 ) n2 = 0.0;\n\telse {\n\n\t\tt2 *= t2;\n\t\tn2 = t2 * t2 * this.dot3( this.grad3[ gi2 ], x2, y2, z2 );\n\n\t}\n\n\tvar t3 = 0.6 - x3 * x3 - y3 * y3 - z3 * z3;\n\tif ( t3 < 0 ) n3 = 0.0;\n\telse {\n\n\t\tt3 *= t3;\n\t\tn3 = t3 * t3 * this.dot3( this.grad3[ gi3 ], x3, y3, z3 );\n\n\t}\n\n\t// Add contributions from each corner to get the final noise value.\n\t// The result is scaled to stay just inside [-1,1]\n\treturn 32.0 * ( n0 + n1 + n2 + n3 );\n\n};\n\n// 4D simplex noise\nSimplexNoise.prototype.noise4d = function ( x, y, z, w ) {\n\n\t// For faster and easier lookups\n\tvar grad4 = this.grad4;\n\tvar simplex = this.simplex;\n\tvar perm = this.perm;\n\n\t// The skewing and unskewing factors are hairy again for the 4D case\n\tvar F4 = ( Math.sqrt( 5.0 ) - 1.0 ) / 4.0;\n\tvar G4 = ( 5.0 - Math.sqrt( 5.0 ) ) / 20.0;\n\tvar n0, n1, n2, n3, n4; // Noise contributions from the five corners\n\t// Skew the (x,y,z,w) space to determine which cell of 24 simplices we're in\n\tvar s = ( x + y + z + w ) * F4; // Factor for 4D skewing\n\tvar i = Math.floor( x + s );\n\tvar j = Math.floor( y + s );\n\tvar k = Math.floor( z + s );\n\tvar l = Math.floor( w + s );\n\tvar t = ( i + j + k + l ) * G4; // Factor for 4D unskewing\n\tvar X0 = i - t; // Unskew the cell origin back to (x,y,z,w) space\n\tvar Y0 = j - t;\n\tvar Z0 = k - t;\n\tvar W0 = l - t;\n\tvar x0 = x - X0; // The x,y,z,w distances from the cell origin\n\tvar y0 = y - Y0;\n\tvar z0 = z - Z0;\n\tvar w0 = w - W0;\n\n\t// For the 4D case, the simplex is a 4D shape I won't even try to describe.\n\t// To find out which of the 24 possible simplices we're in, we need to\n\t// determine the magnitude ordering of x0, y0, z0 and w0.\n\t// The method below is a good way of finding the ordering of x,y,z,w and\n\t// then find the correct traversal order for the simplex we’re in.\n\t// First, six pair-wise comparisons are performed between each possible pair\n\t// of the four coordinates, and the results are used to add up binary bits\n\t// for an integer index.\n\tvar c1 = ( x0 > y0 ) ? 32 : 0;\n\tvar c2 = ( x0 > z0 ) ? 16 : 0;\n\tvar c3 = ( y0 > z0 ) ? 8 : 0;\n\tvar c4 = ( x0 > w0 ) ? 4 : 0;\n\tvar c5 = ( y0 > w0 ) ? 2 : 0;\n\tvar c6 = ( z0 > w0 ) ? 1 : 0;\n\tvar c = c1 + c2 + c3 + c4 + c5 + c6;\n\tvar i1, j1, k1, l1; // The integer offsets for the second simplex corner\n\tvar i2, j2, k2, l2; // The integer offsets for the third simplex corner\n\tvar i3, j3, k3, l3; // The integer offsets for the fourth simplex corner\n\t// simplex[c] is a 4-vector with the numbers 0, 1, 2 and 3 in some order.\n\t// Many values of c will never occur, since e.g. x>y>z>w makes x<z, y<w and x<w\n\t// impossible. Only the 24 indices which have non-zero entries make any sense.\n\t// We use a thresholding to set the coordinates in turn from the largest magnitude.\n\t// The number 3 in the \"simplex\" array is at the position of the largest coordinate.\n\ti1 = simplex[ c ][ 0 ] >= 3 ? 1 : 0;\n\tj1 = simplex[ c ][ 1 ] >= 3 ? 1 : 0;\n\tk1 = simplex[ c ][ 2 ] >= 3 ? 1 : 0;\n\tl1 = simplex[ c ][ 3 ] >= 3 ? 1 : 0;\n\t// The number 2 in the \"simplex\" array is at the second largest coordinate.\n\ti2 = simplex[ c ][ 0 ] >= 2 ? 1 : 0;\n\tj2 = simplex[ c ][ 1 ] >= 2 ? 1 : 0; k2 = simplex[ c ][ 2 ] >= 2 ? 1 : 0;\n\tl2 = simplex[ c ][ 3 ] >= 2 ? 1 : 0;\n\t// The number 1 in the \"simplex\" array is at the second smallest coordinate.\n\ti3 = simplex[ c ][ 0 ] >= 1 ? 1 : 0;\n\tj3 = simplex[ c ][ 1 ] >= 1 ? 1 : 0;\n\tk3 = simplex[ c ][ 2 ] >= 1 ? 1 : 0;\n\tl3 = simplex[ c ][ 3 ] >= 1 ? 1 : 0;\n\t// The fifth corner has all coordinate offsets = 1, so no need to look that up.\n\tvar x1 = x0 - i1 + G4; // Offsets for second corner in (x,y,z,w) coords\n\tvar y1 = y0 - j1 + G4;\n\tvar z1 = z0 - k1 + G4;\n\tvar w1 = w0 - l1 + G4;\n\tvar x2 = x0 - i2 + 2.0 * G4; // Offsets for third corner in (x,y,z,w) coords\n\tvar y2 = y0 - j2 + 2.0 * G4;\n\tvar z2 = z0 - k2 + 2.0 * G4;\n\tvar w2 = w0 - l2 + 2.0 * G4;\n\tvar x3 = x0 - i3 + 3.0 * G4; // Offsets for fourth corner in (x,y,z,w) coords\n\tvar y3 = y0 - j3 + 3.0 * G4;\n\tvar z3 = z0 - k3 + 3.0 * G4;\n\tvar w3 = w0 - l3 + 3.0 * G4;\n\tvar x4 = x0 - 1.0 + 4.0 * G4; // Offsets for last corner in (x,y,z,w) coords\n\tvar y4 = y0 - 1.0 + 4.0 * G4;\n\tvar z4 = z0 - 1.0 + 4.0 * G4;\n\tvar w4 = w0 - 1.0 + 4.0 * G4;\n\t// Work out the hashed gradient indices of the five simplex corners\n\tvar ii = i & 255;\n\tvar jj = j & 255;\n\tvar kk = k & 255;\n\tvar ll = l & 255;\n\tvar gi0 = perm[ ii + perm[ jj + perm[ kk + perm[ ll ] ] ] ] % 32;\n\tvar gi1 = perm[ ii + i1 + perm[ jj + j1 + perm[ kk + k1 + perm[ ll + l1 ] ] ] ] % 32;\n\tvar gi2 = perm[ ii + i2 + perm[ jj + j2 + perm[ kk + k2 + perm[ ll + l2 ] ] ] ] % 32;\n\tvar gi3 = perm[ ii + i3 + perm[ jj + j3 + perm[ kk + k3 + perm[ ll + l3 ] ] ] ] % 32;\n\tvar gi4 = perm[ ii + 1 + perm[ jj + 1 + perm[ kk + 1 + perm[ ll + 1 ] ] ] ] % 32;\n\t// Calculate the contribution from the five corners\n\tvar t0 = 0.6 - x0 * x0 - y0 * y0 - z0 * z0 - w0 * w0;\n\tif ( t0 < 0 ) n0 = 0.0;\n\telse {\n\n\t\tt0 *= t0;\n\t\tn0 = t0 * t0 * this.dot4( grad4[ gi0 ], x0, y0, z0, w0 );\n\n\t}\n\n\tvar t1 = 0.6 - x1 * x1 - y1 * y1 - z1 * z1 - w1 * w1;\n\tif ( t1 < 0 ) n1 = 0.0;\n\telse {\n\n\t\tt1 *= t1;\n\t\tn1 = t1 * t1 * this.dot4( grad4[ gi1 ], x1, y1, z1, w1 );\n\n\t}\n\n\tvar t2 = 0.6 - x2 * x2 - y2 * y2 - z2 * z2 - w2 * w2;\n\tif ( t2 < 0 ) n2 = 0.0;\n\telse {\n\n\t\tt2 *= t2;\n\t\tn2 = t2 * t2 * this.dot4( grad4[ gi2 ], x2, y2, z2, w2 );\n\n\t}\n\n\tvar t3 = 0.6 - x3 * x3 - y3 * y3 - z3 * z3 - w3 * w3;\n\tif ( t3 < 0 ) n3 = 0.0;\n\telse {\n\n\t\tt3 *= t3;\n\t\tn3 = t3 * t3 * this.dot4( grad4[ gi3 ], x3, y3, z3, w3 );\n\n\t}\n\n\tvar t4 = 0.6 - x4 * x4 - y4 * y4 - z4 * z4 - w4 * w4;\n\tif ( t4 < 0 ) n4 = 0.0;\n\telse {\n\n\t\tt4 *= t4;\n\t\tn4 = t4 * t4 * this.dot4( grad4[ gi4 ], x4, y4, z4, w4 );\n\n\t}\n\n\t// Sum up and scale the result to cover the range [-1,1]\n\treturn 27.0 * ( n0 + n1 + n2 + n3 + n4 );\n\n};\n\nexport { SimplexNoise };\n","import {\n\tClock,\n\tLinearFilter,\n\tMesh,\n\tOrthographicCamera,\n\tPlaneBufferGeometry,\n\tRGBAFormat,\n\tVector2,\n\tWebGLRenderTarget\n} from '../../../build/three.module.js';\nimport { CopyShader } from '../shaders/CopyShader.js';\nimport { ShaderPass } from '../postprocessing/ShaderPass.js';\nimport { MaskPass } from '../postprocessing/MaskPass.js';\nimport { ClearMaskPass } from '../postprocessing/MaskPass.js';\n\nvar EffectComposer = function ( renderer, renderTarget ) {\n\n\tthis.renderer = renderer;\n\n\tif ( renderTarget === undefined ) {\n\n\t\tvar parameters = {\n\t\t\tminFilter: LinearFilter,\n\t\t\tmagFilter: LinearFilter,\n\t\t\tformat: RGBAFormat\n\t\t};\n\n\t\tvar size = renderer.getSize( new Vector2() );\n\t\tthis._pixelRatio = renderer.getPixelRatio();\n\t\tthis._width = size.width;\n\t\tthis._height = size.height;\n\n\t\trenderTarget = new WebGLRenderTarget( this._width * this._pixelRatio, this._height * this._pixelRatio, parameters );\n\t\trenderTarget.texture.name = 'EffectComposer.rt1';\n\n\t} else {\n\n\t\tthis._pixelRatio = 1;\n\t\tthis._width = renderTarget.width;\n\t\tthis._height = renderTarget.height;\n\n\t}\n\n\tthis.renderTarget1 = renderTarget;\n\tthis.renderTarget2 = renderTarget.clone();\n\tthis.renderTarget2.texture.name = 'EffectComposer.rt2';\n\n\tthis.writeBuffer = this.renderTarget1;\n\tthis.readBuffer = this.renderTarget2;\n\n\tthis.renderToScreen = true;\n\n\tthis.passes = [];\n\n\t// dependencies\n\n\tif ( CopyShader === undefined ) {\n\n\t\tconsole.error( 'THREE.EffectComposer relies on CopyShader' );\n\n\t}\n\n\tif ( ShaderPass === undefined ) {\n\n\t\tconsole.error( 'THREE.EffectComposer relies on ShaderPass' );\n\n\t}\n\n\tthis.copyPass = new ShaderPass( CopyShader );\n\n\tthis.clock = new Clock();\n\n};\n\nObject.assign( EffectComposer.prototype, {\n\n\tswapBuffers: function () {\n\n\t\tvar tmp = this.readBuffer;\n\t\tthis.readBuffer = this.writeBuffer;\n\t\tthis.writeBuffer = tmp;\n\n\t},\n\n\taddPass: function ( pass ) {\n\n\t\tthis.passes.push( pass );\n\t\tpass.setSize( this._width * this._pixelRatio, this._height * this._pixelRatio );\n\n\t},\n\n\tinsertPass: function ( pass, index ) {\n\n\t\tthis.passes.splice( index, 0, pass );\n\t\tpass.setSize( this._width * this._pixelRatio, this._height * this._pixelRatio );\n\n\t},\n\n\tremovePass: function ( pass ) {\n\n\t\tconst index = this.passes.indexOf( pass );\n\n\t\tif ( index !== - 1 ) {\n\n\t\t\tthis.passes.splice( index, 1 );\n\n\t\t}\n\n\t},\n\n\tisLastEnabledPass: function ( passIndex ) {\n\n\t\tfor ( var i = passIndex + 1; i < this.passes.length; i ++ ) {\n\n\t\t\tif ( this.passes[ i ].enabled ) {\n\n\t\t\t\treturn false;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn true;\n\n\t},\n\n\trender: function ( deltaTime ) {\n\n\t\t// deltaTime value is in seconds\n\n\t\tif ( deltaTime === undefined ) {\n\n\t\t\tdeltaTime = this.clock.getDelta();\n\n\t\t}\n\n\t\tvar currentRenderTarget = this.renderer.getRenderTarget();\n\n\t\tvar maskActive = false;\n\n\t\tvar pass, i, il = this.passes.length;\n\n\t\tfor ( i = 0; i < il; i ++ ) {\n\n\t\t\tpass = this.passes[ i ];\n\n\t\t\tif ( pass.enabled === false ) continue;\n\n\t\t\tpass.renderToScreen = ( this.renderToScreen && this.isLastEnabledPass( i ) );\n\t\t\tpass.render( this.renderer, this.writeBuffer, this.readBuffer, deltaTime, maskActive );\n\n\t\t\tif ( pass.needsSwap ) {\n\n\t\t\t\tif ( maskActive ) {\n\n\t\t\t\t\tvar context = this.renderer.getContext();\n\t\t\t\t\tvar stencil = this.renderer.state.buffers.stencil;\n\n\t\t\t\t\t//context.stencilFunc( context.NOTEQUAL, 1, 0xffffffff );\n\t\t\t\t\tstencil.setFunc( context.NOTEQUAL, 1, 0xffffffff );\n\n\t\t\t\t\tthis.copyPass.render( this.renderer, this.writeBuffer, this.readBuffer, deltaTime );\n\n\t\t\t\t\t//context.stencilFunc( context.EQUAL, 1, 0xffffffff );\n\t\t\t\t\tstencil.setFunc( context.EQUAL, 1, 0xffffffff );\n\n\t\t\t\t}\n\n\t\t\t\tthis.swapBuffers();\n\n\t\t\t}\n\n\t\t\tif ( MaskPass !== undefined ) {\n\n\t\t\t\tif ( pass instanceof MaskPass ) {\n\n\t\t\t\t\tmaskActive = true;\n\n\t\t\t\t} else if ( pass instanceof ClearMaskPass ) {\n\n\t\t\t\t\tmaskActive = false;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis.renderer.setRenderTarget( currentRenderTarget );\n\n\t},\n\n\treset: function ( renderTarget ) {\n\n\t\tif ( renderTarget === undefined ) {\n\n\t\t\tvar size = this.renderer.getSize( new Vector2() );\n\t\t\tthis._pixelRatio = this.renderer.getPixelRatio();\n\t\t\tthis._width = size.width;\n\t\t\tthis._height = size.height;\n\n\t\t\trenderTarget = this.renderTarget1.clone();\n\t\t\trenderTarget.setSize( this._width * this._pixelRatio, this._height * this._pixelRatio );\n\n\t\t}\n\n\t\tthis.renderTarget1.dispose();\n\t\tthis.renderTarget2.dispose();\n\t\tthis.renderTarget1 = renderTarget;\n\t\tthis.renderTarget2 = renderTarget.clone();\n\n\t\tthis.writeBuffer = this.renderTarget1;\n\t\tthis.readBuffer = this.renderTarget2;\n\n\t},\n\n\tsetSize: function ( width, height ) {\n\n\t\tthis._width = width;\n\t\tthis._height = height;\n\n\t\tvar effectiveWidth = this._width * this._pixelRatio;\n\t\tvar effectiveHeight = this._height * this._pixelRatio;\n\n\t\tthis.renderTarget1.setSize( effectiveWidth, effectiveHeight );\n\t\tthis.renderTarget2.setSize( effectiveWidth, effectiveHeight );\n\n\t\tfor ( var i = 0; i < this.passes.length; i ++ ) {\n\n\t\t\tthis.passes[ i ].setSize( effectiveWidth, effectiveHeight );\n\n\t\t}\n\n\t},\n\n\tsetPixelRatio: function ( pixelRatio ) {\n\n\t\tthis._pixelRatio = pixelRatio;\n\n\t\tthis.setSize( this._width, this._height );\n\n\t}\n\n} );\n\n\nvar Pass = function () {\n\n\t// if set to true, the pass is processed by the composer\n\tthis.enabled = true;\n\n\t// if set to true, the pass indicates to swap read and write buffer after rendering\n\tthis.needsSwap = true;\n\n\t// if set to true, the pass clears its buffer before rendering\n\tthis.clear = false;\n\n\t// if set to true, the result of the pass is rendered to screen. This is set automatically by EffectComposer.\n\tthis.renderToScreen = false;\n\n};\n\nObject.assign( Pass.prototype, {\n\n\tsetSize: function ( /* width, height */ ) {},\n\n\trender: function ( /* renderer, writeBuffer, readBuffer, deltaTime, maskActive */ ) {\n\n\t\tconsole.error( 'THREE.Pass: .render() must be implemented in derived pass.' );\n\n\t}\n\n} );\n\n// Helper for passes that need to fill the viewport with a single quad.\nPass.FullScreenQuad = ( function () {\n\n\tvar camera = new OrthographicCamera( - 1, 1, 1, - 1, 0, 1 );\n\tvar geometry = new PlaneBufferGeometry( 2, 2 );\n\n\tvar FullScreenQuad = function ( material ) {\n\n\t\tthis._mesh = new Mesh( geometry, material );\n\n\t};\n\n\tObject.defineProperty( FullScreenQuad.prototype, 'material', {\n\n\t\tget: function () {\n\n\t\t\treturn this._mesh.material;\n\n\t\t},\n\n\t\tset: function ( value ) {\n\n\t\t\tthis._mesh.material = value;\n\n\t\t}\n\n\t} );\n\n\tObject.assign( FullScreenQuad.prototype, {\n\n\t\tdispose: function () {\n\n\t\t\tthis._mesh.geometry.dispose();\n\n\t\t},\n\n\t\trender: function ( renderer ) {\n\n\t\t\trenderer.render( this._mesh, camera );\n\n\t\t}\n\n\t} );\n\n\treturn FullScreenQuad;\n\n} )();\n\nexport { EffectComposer, Pass };\n","import { Pass } from '../postprocessing/Pass.js';\n\nvar MaskPass = function ( scene, camera ) {\n\n\tPass.call( this );\n\n\tthis.scene = scene;\n\tthis.camera = camera;\n\n\tthis.clear = true;\n\tthis.needsSwap = false;\n\n\tthis.inverse = false;\n\n};\n\nMaskPass.prototype = Object.assign( Object.create( Pass.prototype ), {\n\n\tconstructor: MaskPass,\n\n\trender: function ( renderer, writeBuffer, readBuffer /*, deltaTime, maskActive */ ) {\n\n\t\tvar context = renderer.getContext();\n\t\tvar state = renderer.state;\n\n\t\t// don't update color or depth\n\n\t\tstate.buffers.color.setMask( false );\n\t\tstate.buffers.depth.setMask( false );\n\n\t\t// lock buffers\n\n\t\tstate.buffers.color.setLocked( true );\n\t\tstate.buffers.depth.setLocked( true );\n\n\t\t// set up stencil\n\n\t\tvar writeValue, clearValue;\n\n\t\tif ( this.inverse ) {\n\n\t\t\twriteValue = 0;\n\t\t\tclearValue = 1;\n\n\t\t} else {\n\n\t\t\twriteValue = 1;\n\t\t\tclearValue = 0;\n\n\t\t}\n\n\t\tstate.buffers.stencil.setTest( true );\n\t\tstate.buffers.stencil.setOp( context.REPLACE, context.REPLACE, context.REPLACE );\n\t\tstate.buffers.stencil.setFunc( context.ALWAYS, writeValue, 0xffffffff );\n\t\tstate.buffers.stencil.setClear( clearValue );\n\t\tstate.buffers.stencil.setLocked( true );\n\n\t\t// draw into the stencil buffer\n\n\t\trenderer.setRenderTarget( readBuffer );\n\t\tif ( this.clear ) renderer.clear();\n\t\trenderer.render( this.scene, this.camera );\n\n\t\trenderer.setRenderTarget( writeBuffer );\n\t\tif ( this.clear ) renderer.clear();\n\t\trenderer.render( this.scene, this.camera );\n\n\t\t// unlock color and depth buffer for subsequent rendering\n\n\t\tstate.buffers.color.setLocked( false );\n\t\tstate.buffers.depth.setLocked( false );\n\n\t\t// only render where stencil is set to 1\n\n\t\tstate.buffers.stencil.setLocked( false );\n\t\tstate.buffers.stencil.setFunc( context.EQUAL, 1, 0xffffffff ); // draw if == 1\n\t\tstate.buffers.stencil.setOp( context.KEEP, context.KEEP, context.KEEP );\n\t\tstate.buffers.stencil.setLocked( true );\n\n\t}\n\n} );\n\n\nvar ClearMaskPass = function () {\n\n\tPass.call( this );\n\n\tthis.needsSwap = false;\n\n};\n\nClearMaskPass.prototype = Object.create( Pass.prototype );\n\nObject.assign( ClearMaskPass.prototype, {\n\n\trender: function ( renderer /*, writeBuffer, readBuffer, deltaTime, maskActive */ ) {\n\n\t\trenderer.state.buffers.stencil.setLocked( false );\n\t\trenderer.state.buffers.stencil.setTest( false );\n\n\t}\n\n} );\n\nexport { MaskPass, ClearMaskPass };\n","import {\n\tOrthographicCamera,\n\tPlaneBufferGeometry,\n\tMesh\n} from '../../../build/three.module.js';\n\nfunction Pass() {\n\n\t// if set to true, the pass is processed by the composer\n\tthis.enabled = true;\n\n\t// if set to true, the pass indicates to swap read and write buffer after rendering\n\tthis.needsSwap = true;\n\n\t// if set to true, the pass clears its buffer before rendering\n\tthis.clear = false;\n\n\t// if set to true, the result of the pass is rendered to screen. This is set automatically by EffectComposer.\n\tthis.renderToScreen = false;\n\n}\n\nObject.assign( Pass.prototype, {\n\n\tsetSize: function ( /* width, height */ ) {},\n\n\trender: function ( /* renderer, writeBuffer, readBuffer, deltaTime, maskActive */ ) {\n\n\t\tconsole.error( 'THREE.Pass: .render() must be implemented in derived pass.' );\n\n\t}\n\n} );\n\n// Helper for passes that need to fill the viewport with a single quad.\n\n// Important: It's actually a hack to put FullScreenQuad into the Pass namespace. This is only\n// done to make examples/js code work. Normally, FullScreenQuad should be exported\n// from this module like Pass.\n\nPass.FullScreenQuad = ( function () {\n\n\tvar camera = new OrthographicCamera( - 1, 1, 1, - 1, 0, 1 );\n\tvar geometry = new PlaneBufferGeometry( 2, 2 );\n\n\tvar FullScreenQuad = function ( material ) {\n\n\t\tthis._mesh = new Mesh( geometry, material );\n\n\t};\n\n\tObject.defineProperty( FullScreenQuad.prototype, 'material', {\n\n\t\tget: function () {\n\n\t\t\treturn this._mesh.material;\n\n\t\t},\n\n\t\tset: function ( value ) {\n\n\t\t\tthis._mesh.material = value;\n\n\t\t}\n\n\t} );\n\n\tObject.assign( FullScreenQuad.prototype, {\n\n\t\tdispose: function () {\n\n\t\t\tthis._mesh.geometry.dispose();\n\n\t\t},\n\n\t\trender: function ( renderer ) {\n\n\t\t\trenderer.render( this._mesh, camera );\n\n\t\t}\n\n\t} );\n\n\treturn FullScreenQuad;\n\n} )();\n\nexport { Pass };\n","import {\n\tAddEquation,\n\tColor,\n\tCustomBlending,\n\tDataTexture,\n\tDepthTexture,\n\tDstAlphaFactor,\n\tDstColorFactor,\n\tFloatType,\n\tLinearFilter,\n\tMathUtils,\n\tMeshNormalMaterial,\n\tNearestFilter,\n\tNoBlending,\n\tRGBAFormat,\n\tRepeatWrapping,\n\tShaderMaterial,\n\tUniformsUtils,\n\tUnsignedShortType,\n\tVector3,\n\tWebGLRenderTarget,\n\tZeroFactor\n} from '../../../build/three.module.js';\nimport { Pass } from '../postprocessing/Pass.js';\nimport { SimplexNoise } from '../math/SimplexNoise.js';\nimport { SSAOShader } from '../shaders/SSAOShader.js';\nimport { SSAOBlurShader } from '../shaders/SSAOShader.js';\nimport { SSAODepthShader } from '../shaders/SSAOShader.js';\nimport { CopyShader } from '../shaders/CopyShader.js';\n\nvar SSAOPass = function ( scene, camera, width, height ) {\n\n\tPass.call( this );\n\n\tthis.width = ( width !== undefined ) ? width : 512;\n\tthis.height = ( height !== undefined ) ? height : 512;\n\n\tthis.clear = true;\n\n\tthis.camera = camera;\n\tthis.scene = scene;\n\n\tthis.kernelRadius = 8;\n\tthis.kernelSize = 32;\n\tthis.kernel = [];\n\tthis.noiseTexture = null;\n\tthis.output = 0;\n\n\tthis.minDistance = 0.005;\n\tthis.maxDistance = 0.1;\n\n\tthis._visibilityCache = new Map();\n\n\t//\n\n\tthis.generateSampleKernel();\n\tthis.generateRandomKernelRotations();\n\n\t// beauty render target\n\n\tvar depthTexture = new DepthTexture();\n\tdepthTexture.type = UnsignedShortType;\n\tdepthTexture.minFilter = NearestFilter;\n\tdepthTexture.maxFilter = NearestFilter;\n\n\tthis.beautyRenderTarget = new WebGLRenderTarget( this.width, this.height, {\n\t\tminFilter: LinearFilter,\n\t\tmagFilter: LinearFilter,\n\t\tformat: RGBAFormat\n\t} );\n\n\t// normal render target with depth buffer\n\n\tthis.normalRenderTarget = new WebGLRenderTarget( this.width, this.height, {\n\t\tminFilter: NearestFilter,\n\t\tmagFilter: NearestFilter,\n\t\tformat: RGBAFormat,\n\t\tdepthTexture: depthTexture\n\t} );\n\n\t// ssao render target\n\n\tthis.ssaoRenderTarget = new WebGLRenderTarget( this.width, this.height, {\n\t\tminFilter: LinearFilter,\n\t\tmagFilter: LinearFilter,\n\t\tformat: RGBAFormat\n\t} );\n\n\tthis.blurRenderTarget = this.ssaoRenderTarget.clone();\n\n\t// ssao material\n\n\tif ( SSAOShader === undefined ) {\n\n\t\tconsole.error( 'THREE.SSAOPass: The pass relies on SSAOShader.' );\n\n\t}\n\n\tthis.ssaoMaterial = new ShaderMaterial( {\n\t\tdefines: Object.assign( {}, SSAOShader.defines ),\n\t\tuniforms: UniformsUtils.clone( SSAOShader.uniforms ),\n\t\tvertexShader: SSAOShader.vertexShader,\n\t\tfragmentShader: SSAOShader.fragmentShader,\n\t\tblending: NoBlending\n\t} );\n\n\tthis.ssaoMaterial.uniforms[ 'tDiffuse' ].value = this.beautyRenderTarget.texture;\n\tthis.ssaoMaterial.uniforms[ 'tNormal' ].value = this.normalRenderTarget.texture;\n\tthis.ssaoMaterial.uniforms[ 'tDepth' ].value = this.normalRenderTarget.depthTexture;\n\tthis.ssaoMaterial.uniforms[ 'tNoise' ].value = this.noiseTexture;\n\tthis.ssaoMaterial.uniforms[ 'kernel' ].value = this.kernel;\n\tthis.ssaoMaterial.uniforms[ 'cameraNear' ].value = this.camera.near;\n\tthis.ssaoMaterial.uniforms[ 'cameraFar' ].value = this.camera.far;\n\tthis.ssaoMaterial.uniforms[ 'resolution' ].value.set( this.width, this.height );\n\tthis.ssaoMaterial.uniforms[ 'cameraProjectionMatrix' ].value.copy( this.camera.projectionMatrix );\n\tthis.ssaoMaterial.uniforms[ 'cameraInverseProjectionMatrix' ].value.copy( this.camera.projectionMatrixInverse );\n\n\t// normal material\n\n\tthis.normalMaterial = new MeshNormalMaterial();\n\tthis.normalMaterial.blending = NoBlending;\n\n\t// blur material\n\n\tthis.blurMaterial = new ShaderMaterial( {\n\t\tdefines: Object.assign( {}, SSAOBlurShader.defines ),\n\t\tuniforms: UniformsUtils.clone( SSAOBlurShader.uniforms ),\n\t\tvertexShader: SSAOBlurShader.vertexShader,\n\t\tfragmentShader: SSAOBlurShader.fragmentShader\n\t} );\n\tthis.blurMaterial.uniforms[ 'tDiffuse' ].value = this.ssaoRenderTarget.texture;\n\tthis.blurMaterial.uniforms[ 'resolution' ].value.set( this.width, this.height );\n\n\t// material for rendering the depth\n\n\tthis.depthRenderMaterial = new ShaderMaterial( {\n\t\tdefines: Object.assign( {}, SSAODepthShader.defines ),\n\t\tuniforms: UniformsUtils.clone( SSAODepthShader.uniforms ),\n\t\tvertexShader: SSAODepthShader.vertexShader,\n\t\tfragmentShader: SSAODepthShader.fragmentShader,\n\t\tblending: NoBlending\n\t} );\n\tthis.depthRenderMaterial.uniforms[ 'tDepth' ].value = this.normalRenderTarget.depthTexture;\n\tthis.depthRenderMaterial.uniforms[ 'cameraNear' ].value = this.camera.near;\n\tthis.depthRenderMaterial.uniforms[ 'cameraFar' ].value = this.camera.far;\n\n\t// material for rendering the content of a render target\n\n\tthis.copyMaterial = new ShaderMaterial( {\n\t\tuniforms: UniformsUtils.clone( CopyShader.uniforms ),\n\t\tvertexShader: CopyShader.vertexShader,\n\t\tfragmentShader: CopyShader.fragmentShader,\n\t\ttransparent: true,\n\t\tdepthTest: false,\n\t\tdepthWrite: false,\n\t\tblendSrc: DstColorFactor,\n\t\tblendDst: ZeroFactor,\n\t\tblendEquation: AddEquation,\n\t\tblendSrcAlpha: DstAlphaFactor,\n\t\tblendDstAlpha: ZeroFactor,\n\t\tblendEquationAlpha: AddEquation\n\t} );\n\n\tthis.fsQuad = new Pass.FullScreenQuad( null );\n\n\tthis.originalClearColor = new Color();\n\n};\n\nSSAOPass.prototype = Object.assign( Object.create( Pass.prototype ), {\n\n\tconstructor: SSAOPass,\n\n\tdispose: function () {\n\n\t\t// dispose render targets\n\n\t\tthis.beautyRenderTarget.dispose();\n\t\tthis.normalRenderTarget.dispose();\n\t\tthis.ssaoRenderTarget.dispose();\n\t\tthis.blurRenderTarget.dispose();\n\n\t\t// dispose materials\n\n\t\tthis.normalMaterial.dispose();\n\t\tthis.blurMaterial.dispose();\n\t\tthis.copyMaterial.dispose();\n\t\tthis.depthRenderMaterial.dispose();\n\n\t\t// dipsose full screen quad\n\n\t\tthis.fsQuad.dispose();\n\n\t},\n\n\trender: function ( renderer, writeBuffer /*, readBuffer, deltaTime, maskActive */ ) {\n\n\t\t// render beauty\n\n\t\trenderer.setRenderTarget( this.beautyRenderTarget );\n\t\trenderer.clear();\n\t\trenderer.render( this.scene, this.camera );\n\n\t\t// render normals and depth (honor only meshes, points and lines do not contribute to SSAO)\n\n\t\tthis.overrideVisibility();\n\t\tthis.renderOverride( renderer, this.normalMaterial, this.normalRenderTarget, 0x7777ff, 1.0 );\n\t\tthis.restoreVisibility();\n\n\t\t// render SSAO\n\n\t\tthis.ssaoMaterial.uniforms[ 'kernelRadius' ].value = this.kernelRadius;\n\t\tthis.ssaoMaterial.uniforms[ 'minDistance' ].value = this.minDistance;\n\t\tthis.ssaoMaterial.uniforms[ 'maxDistance' ].value = this.maxDistance;\n\t\tthis.renderPass( renderer, this.ssaoMaterial, this.ssaoRenderTarget );\n\n\t\t// render blur\n\n\t\tthis.renderPass( renderer, this.blurMaterial, this.blurRenderTarget );\n\n\t\t// output result to screen\n\n\t\tswitch ( this.output ) {\n\n\t\t\tcase SSAOPass.OUTPUT.SSAO:\n\n\t\t\t\tthis.copyMaterial.uniforms[ 'tDiffuse' ].value = this.ssaoRenderTarget.texture;\n\t\t\t\tthis.copyMaterial.blending = NoBlending;\n\t\t\t\tthis.renderPass( renderer, this.copyMaterial, this.renderToScreen ? null : writeBuffer );\n\n\t\t\t\tbreak;\n\n\t\t\tcase SSAOPass.OUTPUT.Blur:\n\n\t\t\t\tthis.copyMaterial.uniforms[ 'tDiffuse' ].value = this.blurRenderTarget.texture;\n\t\t\t\tthis.copyMaterial.blending = NoBlending;\n\t\t\t\tthis.renderPass( renderer, this.copyMaterial, this.renderToScreen ? null : writeBuffer );\n\n\t\t\t\tbreak;\n\n\t\t\tcase SSAOPass.OUTPUT.Beauty:\n\n\t\t\t\tthis.copyMaterial.uniforms[ 'tDiffuse' ].value = this.beautyRenderTarget.texture;\n\t\t\t\tthis.copyMaterial.blending = NoBlending;\n\t\t\t\tthis.renderPass( renderer, this.copyMaterial, this.renderToScreen ? null : writeBuffer );\n\n\t\t\t\tbreak;\n\n\t\t\tcase SSAOPass.OUTPUT.Depth:\n\n\t\t\t\tthis.renderPass( renderer, this.depthRenderMaterial, this.renderToScreen ? null : writeBuffer );\n\n\t\t\t\tbreak;\n\n\t\t\tcase SSAOPass.OUTPUT.Normal:\n\n\t\t\t\tthis.copyMaterial.uniforms[ 'tDiffuse' ].value = this.normalRenderTarget.texture;\n\t\t\t\tthis.copyMaterial.blending = NoBlending;\n\t\t\t\tthis.renderPass( renderer, this.copyMaterial, this.renderToScreen ? null : writeBuffer );\n\n\t\t\t\tbreak;\n\n\t\t\tcase SSAOPass.OUTPUT.Default:\n\n\t\t\t\tthis.copyMaterial.uniforms[ 'tDiffuse' ].value = this.beautyRenderTarget.texture;\n\t\t\t\tthis.copyMaterial.blending = NoBlending;\n\t\t\t\tthis.renderPass( renderer, this.copyMaterial, this.renderToScreen ? null : writeBuffer );\n\n\t\t\t\tthis.copyMaterial.uniforms[ 'tDiffuse' ].value = this.blurRenderTarget.texture;\n\t\t\t\tthis.copyMaterial.blending = CustomBlending;\n\t\t\t\tthis.renderPass( renderer, this.copyMaterial, this.renderToScreen ? null : writeBuffer );\n\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\t\t\t\tconsole.warn( 'THREE.SSAOPass: Unknown output type.' );\n\n\t\t}\n\n\t},\n\n\trenderPass: function ( renderer, passMaterial, renderTarget, clearColor, clearAlpha ) {\n\n\t\t// save original state\n\t\trenderer.getClearColor( this.originalClearColor );\n\t\tvar originalClearAlpha = renderer.getClearAlpha();\n\t\tvar originalAutoClear = renderer.autoClear;\n\n\t\trenderer.setRenderTarget( renderTarget );\n\n\t\t// setup pass state\n\t\trenderer.autoClear = false;\n\t\tif ( ( clearColor !== undefined ) && ( clearColor !== null ) ) {\n\n\t\t\trenderer.setClearColor( clearColor );\n\t\t\trenderer.setClearAlpha( clearAlpha || 0.0 );\n\t\t\trenderer.clear();\n\n\t\t}\n\n\t\tthis.fsQuad.material = passMaterial;\n\t\tthis.fsQuad.render( renderer );\n\n\t\t// restore original state\n\t\trenderer.autoClear = originalAutoClear;\n\t\trenderer.setClearColor( this.originalClearColor );\n\t\trenderer.setClearAlpha( originalClearAlpha );\n\n\t},\n\n\trenderOverride: function ( renderer, overrideMaterial, renderTarget, clearColor, clearAlpha ) {\n\n\t\trenderer.getClearColor( this.originalClearColor );\n\t\tvar originalClearAlpha = renderer.getClearAlpha();\n\t\tvar originalAutoClear = renderer.autoClear;\n\n\t\trenderer.setRenderTarget( renderTarget );\n\t\trenderer.autoClear = false;\n\n\t\tclearColor = overrideMaterial.clearColor || clearColor;\n\t\tclearAlpha = overrideMaterial.clearAlpha || clearAlpha;\n\n\t\tif ( ( clearColor !== undefined ) && ( clearColor !== null ) ) {\n\n\t\t\trenderer.setClearColor( clearColor );\n\t\t\trenderer.setClearAlpha( clearAlpha || 0.0 );\n\t\t\trenderer.clear();\n\n\t\t}\n\n\t\tthis.scene.overrideMaterial = overrideMaterial;\n\t\trenderer.render( this.scene, this.camera );\n\t\tthis.scene.overrideMaterial = null;\n\n\t\t// restore original state\n\n\t\trenderer.autoClear = originalAutoClear;\n\t\trenderer.setClearColor( this.originalClearColor );\n\t\trenderer.setClearAlpha( originalClearAlpha );\n\n\t},\n\n\tsetSize: function ( width, height ) {\n\n\t\tthis.width = width;\n\t\tthis.height = height;\n\n\t\tthis.beautyRenderTarget.setSize( width, height );\n\t\tthis.ssaoRenderTarget.setSize( width, height );\n\t\tthis.normalRenderTarget.setSize( width, height );\n\t\tthis.blurRenderTarget.setSize( width, height );\n\n\t\tthis.ssaoMaterial.uniforms[ 'resolution' ].value.set( width, height );\n\t\tthis.ssaoMaterial.uniforms[ 'cameraProjectionMatrix' ].value.copy( this.camera.projectionMatrix );\n\t\tthis.ssaoMaterial.uniforms[ 'cameraInverseProjectionMatrix' ].value.copy( this.camera.projectionMatrixInverse );\n\n\t\tthis.blurMaterial.uniforms[ 'resolution' ].value.set( width, height );\n\n\t},\n\n\tgenerateSampleKernel: function () {\n\n\t\tvar kernelSize = this.kernelSize;\n\t\tvar kernel = this.kernel;\n\n\t\tfor ( var i = 0; i < kernelSize; i ++ ) {\n\n\t\t\tvar sample = new Vector3();\n\t\t\tsample.x = ( Math.random() * 2 ) - 1;\n\t\t\tsample.y = ( Math.random() * 2 ) - 1;\n\t\t\tsample.z = Math.random();\n\n\t\t\tsample.normalize();\n\n\t\t\tvar scale = i / kernelSize;\n\t\t\tscale = MathUtils.lerp( 0.1, 1, scale * scale );\n\t\t\tsample.multiplyScalar( scale );\n\n\t\t\tkernel.push( sample );\n\n\t\t}\n\n\t},\n\n\tgenerateRandomKernelRotations: function () {\n\n\t\tvar width = 4, height = 4;\n\n\t\tif ( SimplexNoise === undefined ) {\n\n\t\t\tconsole.error( 'THREE.SSAOPass: The pass relies on SimplexNoise.' );\n\n\t\t}\n\n\t\tvar simplex = new SimplexNoise();\n\n\t\tvar size = width * height;\n\t\tvar data = new Float32Array( size * 4 );\n\n\t\tfor ( var i = 0; i < size; i ++ ) {\n\n\t\t\tvar stride = i * 4;\n\n\t\t\tvar x = ( Math.random() * 2 ) - 1;\n\t\t\tvar y = ( Math.random() * 2 ) - 1;\n\t\t\tvar z = 0;\n\n\t\t\tvar noise = simplex.noise3d( x, y, z );\n\n\t\t\tdata[ stride ] = noise;\n\t\t\tdata[ stride + 1 ] = noise;\n\t\t\tdata[ stride + 2 ] = noise;\n\t\t\tdata[ stride + 3 ] = 1;\n\n\t\t}\n\n\t\tthis.noiseTexture = new DataTexture( data, width, height, RGBAFormat, FloatType );\n\t\tthis.noiseTexture.wrapS = RepeatWrapping;\n\t\tthis.noiseTexture.wrapT = RepeatWrapping;\n\n\t},\n\n\toverrideVisibility: function () {\n\n\t\tvar scene = this.scene;\n\t\tvar cache = this._visibilityCache;\n\n\t\tscene.traverse( function ( object ) {\n\n\t\t\tcache.set( object, object.visible );\n\n\t\t\tif ( object.isPoints || object.isLine ) object.visible = false;\n\n\t\t} );\n\n\t},\n\n\trestoreVisibility: function () {\n\n\t\tvar scene = this.scene;\n\t\tvar cache = this._visibilityCache;\n\n\t\tscene.traverse( function ( object ) {\n\n\t\t\tvar visible = cache.get( object );\n\t\t\tobject.visible = visible;\n\n\t\t} );\n\n\t\tcache.clear();\n\n\t}\n\n} );\n\nSSAOPass.OUTPUT = {\n\t'Default': 0,\n\t'SSAO': 1,\n\t'Blur': 2,\n\t'Beauty': 3,\n\t'Depth': 4,\n\t'Normal': 5\n};\n\nexport { SSAOPass };\n","import {\n\tShaderMaterial,\n\tUniformsUtils\n} from '../../../build/three.module.js';\nimport { Pass } from '../postprocessing/Pass.js';\n\nvar ShaderPass = function ( shader, textureID ) {\n\n\tPass.call( this );\n\n\tthis.textureID = ( textureID !== undefined ) ? textureID : 'tDiffuse';\n\n\tif ( shader instanceof ShaderMaterial ) {\n\n\t\tthis.uniforms = shader.uniforms;\n\n\t\tthis.material = shader;\n\n\t} else if ( shader ) {\n\n\t\tthis.uniforms = UniformsUtils.clone( shader.uniforms );\n\n\t\tthis.material = new ShaderMaterial( {\n\n\t\t\tdefines: Object.assign( {}, shader.defines ),\n\t\t\tuniforms: this.uniforms,\n\t\t\tvertexShader: shader.vertexShader,\n\t\t\tfragmentShader: shader.fragmentShader\n\n\t\t} );\n\n\t}\n\n\tthis.fsQuad = new Pass.FullScreenQuad( this.material );\n\n};\n\nShaderPass.prototype = Object.assign( Object.create( Pass.prototype ), {\n\n\tconstructor: ShaderPass,\n\n\trender: function ( renderer, writeBuffer, readBuffer /*, deltaTime, maskActive */ ) {\n\n\t\tif ( this.uniforms[ this.textureID ] ) {\n\n\t\t\tthis.uniforms[ this.textureID ].value = readBuffer.texture;\n\n\t\t}\n\n\t\tthis.fsQuad.material = this.material;\n\n\t\tif ( this.renderToScreen ) {\n\n\t\t\trenderer.setRenderTarget( null );\n\t\t\tthis.fsQuad.render( renderer );\n\n\t\t} else {\n\n\t\t\trenderer.setRenderTarget( writeBuffer );\n\t\t\t// TODO: Avoid using autoClear properties, see https://github.com/mrdoob/three.js/pull/15571#issuecomment-465669600\n\t\t\tif ( this.clear ) renderer.clear( renderer.autoClearColor, renderer.autoClearDepth, renderer.autoClearStencil );\n\t\t\tthis.fsQuad.render( renderer );\n\n\t\t}\n\n\t}\n\n} );\n\nexport { ShaderPass };\n","/**\n * Full-screen textured quad shader\n */\n\nvar CopyShader = {\n\n\tuniforms: {\n\n\t\t'tDiffuse': { value: null },\n\t\t'opacity': { value: 1.0 }\n\n\t},\n\n\tvertexShader: [\n\n\t\t'varying vec2 vUv;',\n\n\t\t'void main() {',\n\n\t\t'\tvUv = uv;',\n\t\t'\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );',\n\n\t\t'}'\n\n\t].join( '\\n' ),\n\n\tfragmentShader: [\n\n\t\t'uniform float opacity;',\n\n\t\t'uniform sampler2D tDiffuse;',\n\n\t\t'varying vec2 vUv;',\n\n\t\t'void main() {',\n\n\t\t'\tvec4 texel = texture2D( tDiffuse, vUv );',\n\t\t'\tgl_FragColor = opacity * texel;',\n\n\t\t'}'\n\n\t].join( '\\n' )\n\n};\n\nexport { CopyShader };\n","import {\n\tMatrix4,\n\tVector2\n} from '../../../build/three.module.js';\n\n/**\n * References:\n * http://john-chapman-graphics.blogspot.com/2013/01/ssao-tutorial.html\n * https://learnopengl.com/Advanced-Lighting/SSAO\n * https://github.com/McNopper/OpenGL/blob/master/Example28/shader/ssao.frag.glsl\n */\n\nvar SSAOShader = {\n\n\tdefines: {\n\t\t'PERSPECTIVE_CAMERA': 1,\n\t\t'KERNEL_SIZE': 32\n\t},\n\n\tuniforms: {\n\n\t\t'tDiffuse': { value: null },\n\t\t'tNormal': { value: null },\n\t\t'tDepth': { value: null },\n\t\t'tNoise': { value: null },\n\t\t'kernel': { value: null },\n\t\t'cameraNear': { value: null },\n\t\t'cameraFar': { value: null },\n\t\t'resolution': { value: new Vector2() },\n\t\t'cameraProjectionMatrix': { value: new Matrix4() },\n\t\t'cameraInverseProjectionMatrix': { value: new Matrix4() },\n\t\t'kernelRadius': { value: 8 },\n\t\t'minDistance': { value: 0.005 },\n\t\t'maxDistance': { value: 0.05 },\n\n\t},\n\n\tvertexShader: [\n\n\t\t'varying vec2 vUv;',\n\n\t\t'void main() {',\n\n\t\t'\tvUv = uv;',\n\n\t\t'\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );',\n\n\t\t'}'\n\n\t].join( '\\n' ),\n\n\tfragmentShader: [\n\n\t\t'uniform sampler2D tDiffuse;',\n\t\t'uniform sampler2D tNormal;',\n\t\t'uniform sampler2D tDepth;',\n\t\t'uniform sampler2D tNoise;',\n\n\t\t'uniform vec3 kernel[ KERNEL_SIZE ];',\n\n\t\t'uniform vec2 resolution;',\n\n\t\t'uniform float cameraNear;',\n\t\t'uniform float cameraFar;',\n\t\t'uniform mat4 cameraProjectionMatrix;',\n\t\t'uniform mat4 cameraInverseProjectionMatrix;',\n\n\t\t'uniform float kernelRadius;',\n\t\t'uniform float minDistance;', // avoid artifacts caused by neighbour fragments with minimal depth difference\n\t\t'uniform float maxDistance;', // avoid the influence of fragments which are too far away\n\n\t\t'varying vec2 vUv;',\n\n\t\t'#include <packing>',\n\n\t\t'float getDepth( const in vec2 screenPosition ) {',\n\n\t\t'\treturn texture2D( tDepth, screenPosition ).x;',\n\n\t\t'}',\n\n\t\t'float getLinearDepth( const in vec2 screenPosition ) {',\n\n\t\t'\t#if PERSPECTIVE_CAMERA == 1',\n\n\t\t'\t\tfloat fragCoordZ = texture2D( tDepth, screenPosition ).x;',\n\t\t'\t\tfloat viewZ = perspectiveDepthToViewZ( fragCoordZ, cameraNear, cameraFar );',\n\t\t'\t\treturn viewZToOrthographicDepth( viewZ, cameraNear, cameraFar );',\n\n\t\t'\t#else',\n\n\t\t'\t\treturn texture2D( tDepth, screenPosition ).x;',\n\n\t\t'\t#endif',\n\n\t\t'}',\n\n\t\t'float getViewZ( const in float depth ) {',\n\n\t\t'\t#if PERSPECTIVE_CAMERA == 1',\n\n\t\t'\t\treturn perspectiveDepthToViewZ( depth, cameraNear, cameraFar );',\n\n\t\t'\t#else',\n\n\t\t'\t\treturn orthographicDepthToViewZ( depth, cameraNear, cameraFar );',\n\n\t\t'\t#endif',\n\n\t\t'}',\n\n\t\t'vec3 getViewPosition( const in vec2 screenPosition, const in float depth, const in float viewZ ) {',\n\n\t\t'\tfloat clipW = cameraProjectionMatrix[2][3] * viewZ + cameraProjectionMatrix[3][3];',\n\n\t\t'\tvec4 clipPosition = vec4( ( vec3( screenPosition, depth ) - 0.5 ) * 2.0, 1.0 );',\n\n\t\t'\tclipPosition *= clipW; // unprojection.',\n\n\t\t'\treturn ( cameraInverseProjectionMatrix * clipPosition ).xyz;',\n\n\t\t'}',\n\n\t\t'vec3 getViewNormal( const in vec2 screenPosition ) {',\n\n\t\t'\treturn unpackRGBToNormal( texture2D( tNormal, screenPosition ).xyz );',\n\n\t\t'}',\n\n\t\t'void main() {',\n\n\t\t'\tfloat depth = getDepth( vUv );',\n\t\t'\tfloat viewZ = getViewZ( depth );',\n\n\t\t'\tvec3 viewPosition = getViewPosition( vUv, depth, viewZ );',\n\t\t'\tvec3 viewNormal = getViewNormal( vUv );',\n\n\t\t' vec2 noiseScale = vec2( resolution.x / 4.0, resolution.y / 4.0 );',\n\t\t'\tvec3 random = texture2D( tNoise, vUv * noiseScale ).xyz;',\n\n\t\t// compute matrix used to reorient a kernel vector\n\n\t\t'\tvec3 tangent = normalize( random - viewNormal * dot( random, viewNormal ) );',\n\t\t'\tvec3 bitangent = cross( viewNormal, tangent );',\n\t\t'\tmat3 kernelMatrix = mat3( tangent, bitangent, viewNormal );',\n\n\t\t' float occlusion = 0.0;',\n\n\t\t' for ( int i = 0; i < KERNEL_SIZE; i ++ ) {',\n\n\t\t'\t\tvec3 sampleVector = kernelMatrix * kernel[ i ];', // reorient sample vector in view space\n\t\t'\t\tvec3 samplePoint = viewPosition + ( sampleVector * kernelRadius );', // calculate sample point\n\n\t\t'\t\tvec4 samplePointNDC = cameraProjectionMatrix * vec4( samplePoint, 1.0 );', // project point and calculate NDC\n\t\t'\t\tsamplePointNDC /= samplePointNDC.w;',\n\n\t\t'\t\tvec2 samplePointUv = samplePointNDC.xy * 0.5 + 0.5;', // compute uv coordinates\n\n\t\t'\t\tfloat realDepth = getLinearDepth( samplePointUv );', // get linear depth from depth texture\n\t\t'\t\tfloat sampleDepth = viewZToOrthographicDepth( samplePoint.z, cameraNear, cameraFar );', // compute linear depth of the sample view Z value\n\t\t'\t\tfloat delta = sampleDepth - realDepth;',\n\n\t\t'\t\tif ( delta > minDistance && delta < maxDistance ) {', // if fragment is before sample point, increase occlusion\n\n\t\t'\t\t\tocclusion += 1.0;',\n\n\t\t'\t\t}',\n\n\t\t'\t}',\n\n\t\t'\tocclusion = clamp( occlusion / float( KERNEL_SIZE ), 0.0, 1.0 );',\n\n\t\t'\tgl_FragColor = vec4( vec3( 1.0 - occlusion ), 1.0 );',\n\n\t\t'}'\n\n\t].join( '\\n' )\n\n};\n\nvar SSAODepthShader = {\n\n\tdefines: {\n\t\t'PERSPECTIVE_CAMERA': 1\n\t},\n\n\tuniforms: {\n\n\t\t'tDepth': { value: null },\n\t\t'cameraNear': { value: null },\n\t\t'cameraFar': { value: null },\n\n\t},\n\n\tvertexShader: [\n\n\t\t'varying vec2 vUv;',\n\n\t\t'void main() {',\n\n\t\t'\tvUv = uv;',\n\t\t'\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );',\n\n\t\t'}'\n\n\t].join( '\\n' ),\n\n\tfragmentShader: [\n\n\t\t'uniform sampler2D tDepth;',\n\n\t\t'uniform float cameraNear;',\n\t\t'uniform float cameraFar;',\n\n\t\t'varying vec2 vUv;',\n\n\t\t'#include <packing>',\n\n\t\t'float getLinearDepth( const in vec2 screenPosition ) {',\n\n\t\t'\t#if PERSPECTIVE_CAMERA == 1',\n\n\t\t'\t\tfloat fragCoordZ = texture2D( tDepth, screenPosition ).x;',\n\t\t'\t\tfloat viewZ = perspectiveDepthToViewZ( fragCoordZ, cameraNear, cameraFar );',\n\t\t'\t\treturn viewZToOrthographicDepth( viewZ, cameraNear, cameraFar );',\n\n\t\t'\t#else',\n\n\t\t'\t\treturn texture2D( tDepth, screenPosition ).x;',\n\n\t\t'\t#endif',\n\n\t\t'}',\n\n\t\t'void main() {',\n\n\t\t'\tfloat depth = getLinearDepth( vUv );',\n\t\t'\tgl_FragColor = vec4( vec3( 1.0 - depth ), 1.0 );',\n\n\t\t'}'\n\n\t].join( '\\n' )\n\n};\n\nvar SSAOBlurShader = {\n\n\tuniforms: {\n\n\t\t'tDiffuse': { value: null },\n\t\t'resolution': { value: new Vector2() }\n\n\t},\n\n\tvertexShader: [\n\n\t\t'varying vec2 vUv;',\n\n\t\t'void main() {',\n\n\t\t'\tvUv = uv;',\n\t\t'\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );',\n\n\t\t'}'\n\n\t].join( '\\n' ),\n\n\tfragmentShader: [\n\n\t\t'uniform sampler2D tDiffuse;',\n\n\t\t'uniform vec2 resolution;',\n\n\t\t'varying vec2 vUv;',\n\n\t\t'void main() {',\n\n\t\t'\tvec2 texelSize = ( 1.0 / resolution );',\n\t\t'\tfloat result = 0.0;',\n\n\t\t'\tfor ( int i = - 2; i <= 2; i ++ ) {',\n\n\t\t'\t\tfor ( int j = - 2; j <= 2; j ++ ) {',\n\n\t\t'\t\t\tvec2 offset = ( vec2( float( i ), float( j ) ) ) * texelSize;',\n\t\t'\t\t\tresult += texture2D( tDiffuse, vUv + offset ).r;',\n\n\t\t'\t\t}',\n\n\t\t'\t}',\n\n\t\t'\tgl_FragColor = vec4( vec3( result / ( 5.0 * 5.0 ) ), 1.0 );',\n\n\t\t'}'\n\n\t].join( '\\n' )\n\n};\n\nexport { SSAOShader, SSAODepthShader, SSAOBlurShader };\n","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n'use strict';\n\nvar punycode = require('punycode');\nvar util = require('./util');\n\nexports.parse = urlParse;\nexports.resolve = urlResolve;\nexports.resolveObject = urlResolveObject;\nexports.format = urlFormat;\n\nexports.Url = Url;\n\nfunction Url() {\n  this.protocol = null;\n  this.slashes = null;\n  this.auth = null;\n  this.host = null;\n  this.port = null;\n  this.hostname = null;\n  this.hash = null;\n  this.search = null;\n  this.query = null;\n  this.pathname = null;\n  this.path = null;\n  this.href = null;\n}\n\n// Reference: RFC 3986, RFC 1808, RFC 2396\n\n// define these here so at least they only have to be\n// compiled once on the first module load.\nvar protocolPattern = /^([a-z0-9.+-]+:)/i,\n    portPattern = /:[0-9]*$/,\n\n    // Special case for a simple path URL\n    simplePathPattern = /^(\\/\\/?(?!\\/)[^\\?\\s]*)(\\?[^\\s]*)?$/,\n\n    // RFC 2396: characters reserved for delimiting URLs.\n    // We actually just auto-escape these.\n    delims = ['<', '>', '\"', '`', ' ', '\\r', '\\n', '\\t'],\n\n    // RFC 2396: characters not allowed for various reasons.\n    unwise = ['{', '}', '|', '\\\\', '^', '`'].concat(delims),\n\n    // Allowed by RFCs, but cause of XSS attacks.  Always escape these.\n    autoEscape = ['\\''].concat(unwise),\n    // Characters that are never ever allowed in a hostname.\n    // Note that any invalid chars are also handled, but these\n    // are the ones that are *expected* to be seen, so we fast-path\n    // them.\n    nonHostChars = ['%', '/', '?', ';', '#'].concat(autoEscape),\n    hostEndingChars = ['/', '?', '#'],\n    hostnameMaxLen = 255,\n    hostnamePartPattern = /^[+a-z0-9A-Z_-]{0,63}$/,\n    hostnamePartStart = /^([+a-z0-9A-Z_-]{0,63})(.*)$/,\n    // protocols that can allow \"unsafe\" and \"unwise\" chars.\n    unsafeProtocol = {\n      'javascript': true,\n      'javascript:': true\n    },\n    // protocols that never have a hostname.\n    hostlessProtocol = {\n      'javascript': true,\n      'javascript:': true\n    },\n    // protocols that always contain a // bit.\n    slashedProtocol = {\n      'http': true,\n      'https': true,\n      'ftp': true,\n      'gopher': true,\n      'file': true,\n      'http:': true,\n      'https:': true,\n      'ftp:': true,\n      'gopher:': true,\n      'file:': true\n    },\n    querystring = require('querystring');\n\nfunction urlParse(url, parseQueryString, slashesDenoteHost) {\n  if (url && util.isObject(url) && url instanceof Url) return url;\n\n  var u = new Url;\n  u.parse(url, parseQueryString, slashesDenoteHost);\n  return u;\n}\n\nUrl.prototype.parse = function(url, parseQueryString, slashesDenoteHost) {\n  if (!util.isString(url)) {\n    throw new TypeError(\"Parameter 'url' must be a string, not \" + typeof url);\n  }\n\n  // Copy chrome, IE, opera backslash-handling behavior.\n  // Back slashes before the query string get converted to forward slashes\n  // See: https://code.google.com/p/chromium/issues/detail?id=25916\n  var queryIndex = url.indexOf('?'),\n      splitter =\n          (queryIndex !== -1 && queryIndex < url.indexOf('#')) ? '?' : '#',\n      uSplit = url.split(splitter),\n      slashRegex = /\\\\/g;\n  uSplit[0] = uSplit[0].replace(slashRegex, '/');\n  url = uSplit.join(splitter);\n\n  var rest = url;\n\n  // trim before proceeding.\n  // This is to support parse stuff like \"  http://foo.com  \\n\"\n  rest = rest.trim();\n\n  if (!slashesDenoteHost && url.split('#').length === 1) {\n    // Try fast path regexp\n    var simplePath = simplePathPattern.exec(rest);\n    if (simplePath) {\n      this.path = rest;\n      this.href = rest;\n      this.pathname = simplePath[1];\n      if (simplePath[2]) {\n        this.search = simplePath[2];\n        if (parseQueryString) {\n          this.query = querystring.parse(this.search.substr(1));\n        } else {\n          this.query = this.search.substr(1);\n        }\n      } else if (parseQueryString) {\n        this.search = '';\n        this.query = {};\n      }\n      return this;\n    }\n  }\n\n  var proto = protocolPattern.exec(rest);\n  if (proto) {\n    proto = proto[0];\n    var lowerProto = proto.toLowerCase();\n    this.protocol = lowerProto;\n    rest = rest.substr(proto.length);\n  }\n\n  // figure out if it's got a host\n  // user@server is *always* interpreted as a hostname, and url\n  // resolution will treat //foo/bar as host=foo,path=bar because that's\n  // how the browser resolves relative URLs.\n  if (slashesDenoteHost || proto || rest.match(/^\\/\\/[^@\\/]+@[^@\\/]+/)) {\n    var slashes = rest.substr(0, 2) === '//';\n    if (slashes && !(proto && hostlessProtocol[proto])) {\n      rest = rest.substr(2);\n      this.slashes = true;\n    }\n  }\n\n  if (!hostlessProtocol[proto] &&\n      (slashes || (proto && !slashedProtocol[proto]))) {\n\n    // there's a hostname.\n    // the first instance of /, ?, ;, or # ends the host.\n    //\n    // If there is an @ in the hostname, then non-host chars *are* allowed\n    // to the left of the last @ sign, unless some host-ending character\n    // comes *before* the @-sign.\n    // URLs are obnoxious.\n    //\n    // ex:\n    // http://a@b@c/ => user:a@b host:c\n    // http://a@b?@c => user:a host:c path:/?@c\n\n    // v0.12 TODO(isaacs): This is not quite how Chrome does things.\n    // Review our test case against browsers more comprehensively.\n\n    // find the first instance of any hostEndingChars\n    var hostEnd = -1;\n    for (var i = 0; i < hostEndingChars.length; i++) {\n      var hec = rest.indexOf(hostEndingChars[i]);\n      if (hec !== -1 && (hostEnd === -1 || hec < hostEnd))\n        hostEnd = hec;\n    }\n\n    // at this point, either we have an explicit point where the\n    // auth portion cannot go past, or the last @ char is the decider.\n    var auth, atSign;\n    if (hostEnd === -1) {\n      // atSign can be anywhere.\n      atSign = rest.lastIndexOf('@');\n    } else {\n      // atSign must be in auth portion.\n      // http://a@b/c@d => host:b auth:a path:/c@d\n      atSign = rest.lastIndexOf('@', hostEnd);\n    }\n\n    // Now we have a portion which is definitely the auth.\n    // Pull that off.\n    if (atSign !== -1) {\n      auth = rest.slice(0, atSign);\n      rest = rest.slice(atSign + 1);\n      this.auth = decodeURIComponent(auth);\n    }\n\n    // the host is the remaining to the left of the first non-host char\n    hostEnd = -1;\n    for (var i = 0; i < nonHostChars.length; i++) {\n      var hec = rest.indexOf(nonHostChars[i]);\n      if (hec !== -1 && (hostEnd === -1 || hec < hostEnd))\n        hostEnd = hec;\n    }\n    // if we still have not hit it, then the entire thing is a host.\n    if (hostEnd === -1)\n      hostEnd = rest.length;\n\n    this.host = rest.slice(0, hostEnd);\n    rest = rest.slice(hostEnd);\n\n    // pull out port.\n    this.parseHost();\n\n    // we've indicated that there is a hostname,\n    // so even if it's empty, it has to be present.\n    this.hostname = this.hostname || '';\n\n    // if hostname begins with [ and ends with ]\n    // assume that it's an IPv6 address.\n    var ipv6Hostname = this.hostname[0] === '[' &&\n        this.hostname[this.hostname.length - 1] === ']';\n\n    // validate a little.\n    if (!ipv6Hostname) {\n      var hostparts = this.hostname.split(/\\./);\n      for (var i = 0, l = hostparts.length; i < l; i++) {\n        var part = hostparts[i];\n        if (!part) continue;\n        if (!part.match(hostnamePartPattern)) {\n          var newpart = '';\n          for (var j = 0, k = part.length; j < k; j++) {\n            if (part.charCodeAt(j) > 127) {\n              // we replace non-ASCII char with a temporary placeholder\n              // we need this to make sure size of hostname is not\n              // broken by replacing non-ASCII by nothing\n              newpart += 'x';\n            } else {\n              newpart += part[j];\n            }\n          }\n          // we test again with ASCII char only\n          if (!newpart.match(hostnamePartPattern)) {\n            var validParts = hostparts.slice(0, i);\n            var notHost = hostparts.slice(i + 1);\n            var bit = part.match(hostnamePartStart);\n            if (bit) {\n              validParts.push(bit[1]);\n              notHost.unshift(bit[2]);\n            }\n            if (notHost.length) {\n              rest = '/' + notHost.join('.') + rest;\n            }\n            this.hostname = validParts.join('.');\n            break;\n          }\n        }\n      }\n    }\n\n    if (this.hostname.length > hostnameMaxLen) {\n      this.hostname = '';\n    } else {\n      // hostnames are always lower case.\n      this.hostname = this.hostname.toLowerCase();\n    }\n\n    if (!ipv6Hostname) {\n      // IDNA Support: Returns a punycoded representation of \"domain\".\n      // It only converts parts of the domain name that\n      // have non-ASCII characters, i.e. it doesn't matter if\n      // you call it with a domain that already is ASCII-only.\n      this.hostname = punycode.toASCII(this.hostname);\n    }\n\n    var p = this.port ? ':' + this.port : '';\n    var h = this.hostname || '';\n    this.host = h + p;\n    this.href += this.host;\n\n    // strip [ and ] from the hostname\n    // the host field still retains them, though\n    if (ipv6Hostname) {\n      this.hostname = this.hostname.substr(1, this.hostname.length - 2);\n      if (rest[0] !== '/') {\n        rest = '/' + rest;\n      }\n    }\n  }\n\n  // now rest is set to the post-host stuff.\n  // chop off any delim chars.\n  if (!unsafeProtocol[lowerProto]) {\n\n    // First, make 100% sure that any \"autoEscape\" chars get\n    // escaped, even if encodeURIComponent doesn't think they\n    // need to be.\n    for (var i = 0, l = autoEscape.length; i < l; i++) {\n      var ae = autoEscape[i];\n      if (rest.indexOf(ae) === -1)\n        continue;\n      var esc = encodeURIComponent(ae);\n      if (esc === ae) {\n        esc = escape(ae);\n      }\n      rest = rest.split(ae).join(esc);\n    }\n  }\n\n\n  // chop off from the tail first.\n  var hash = rest.indexOf('#');\n  if (hash !== -1) {\n    // got a fragment string.\n    this.hash = rest.substr(hash);\n    rest = rest.slice(0, hash);\n  }\n  var qm = rest.indexOf('?');\n  if (qm !== -1) {\n    this.search = rest.substr(qm);\n    this.query = rest.substr(qm + 1);\n    if (parseQueryString) {\n      this.query = querystring.parse(this.query);\n    }\n    rest = rest.slice(0, qm);\n  } else if (parseQueryString) {\n    // no query string, but parseQueryString still requested\n    this.search = '';\n    this.query = {};\n  }\n  if (rest) this.pathname = rest;\n  if (slashedProtocol[lowerProto] &&\n      this.hostname && !this.pathname) {\n    this.pathname = '/';\n  }\n\n  //to support http.request\n  if (this.pathname || this.search) {\n    var p = this.pathname || '';\n    var s = this.search || '';\n    this.path = p + s;\n  }\n\n  // finally, reconstruct the href based on what has been validated.\n  this.href = this.format();\n  return this;\n};\n\n// format a parsed object into a url string\nfunction urlFormat(obj) {\n  // ensure it's an object, and not a string url.\n  // If it's an obj, this is a no-op.\n  // this way, you can call url_format() on strings\n  // to clean up potentially wonky urls.\n  if (util.isString(obj)) obj = urlParse(obj);\n  if (!(obj instanceof Url)) return Url.prototype.format.call(obj);\n  return obj.format();\n}\n\nUrl.prototype.format = function() {\n  var auth = this.auth || '';\n  if (auth) {\n    auth = encodeURIComponent(auth);\n    auth = auth.replace(/%3A/i, ':');\n    auth += '@';\n  }\n\n  var protocol = this.protocol || '',\n      pathname = this.pathname || '',\n      hash = this.hash || '',\n      host = false,\n      query = '';\n\n  if (this.host) {\n    host = auth + this.host;\n  } else if (this.hostname) {\n    host = auth + (this.hostname.indexOf(':') === -1 ?\n        this.hostname :\n        '[' + this.hostname + ']');\n    if (this.port) {\n      host += ':' + this.port;\n    }\n  }\n\n  if (this.query &&\n      util.isObject(this.query) &&\n      Object.keys(this.query).length) {\n    query = querystring.stringify(this.query);\n  }\n\n  var search = this.search || (query && ('?' + query)) || '';\n\n  if (protocol && protocol.substr(-1) !== ':') protocol += ':';\n\n  // only the slashedProtocols get the //.  Not mailto:, xmpp:, etc.\n  // unless they had them to begin with.\n  if (this.slashes ||\n      (!protocol || slashedProtocol[protocol]) && host !== false) {\n    host = '//' + (host || '');\n    if (pathname && pathname.charAt(0) !== '/') pathname = '/' + pathname;\n  } else if (!host) {\n    host = '';\n  }\n\n  if (hash && hash.charAt(0) !== '#') hash = '#' + hash;\n  if (search && search.charAt(0) !== '?') search = '?' + search;\n\n  pathname = pathname.replace(/[?#]/g, function(match) {\n    return encodeURIComponent(match);\n  });\n  search = search.replace('#', '%23');\n\n  return protocol + host + pathname + search + hash;\n};\n\nfunction urlResolve(source, relative) {\n  return urlParse(source, false, true).resolve(relative);\n}\n\nUrl.prototype.resolve = function(relative) {\n  return this.resolveObject(urlParse(relative, false, true)).format();\n};\n\nfunction urlResolveObject(source, relative) {\n  if (!source) return relative;\n  return urlParse(source, false, true).resolveObject(relative);\n}\n\nUrl.prototype.resolveObject = function(relative) {\n  if (util.isString(relative)) {\n    var rel = new Url();\n    rel.parse(relative, false, true);\n    relative = rel;\n  }\n\n  var result = new Url();\n  var tkeys = Object.keys(this);\n  for (var tk = 0; tk < tkeys.length; tk++) {\n    var tkey = tkeys[tk];\n    result[tkey] = this[tkey];\n  }\n\n  // hash is always overridden, no matter what.\n  // even href=\"\" will remove it.\n  result.hash = relative.hash;\n\n  // if the relative url is empty, then there's nothing left to do here.\n  if (relative.href === '') {\n    result.href = result.format();\n    return result;\n  }\n\n  // hrefs like //foo/bar always cut to the protocol.\n  if (relative.slashes && !relative.protocol) {\n    // take everything except the protocol from relative\n    var rkeys = Object.keys(relative);\n    for (var rk = 0; rk < rkeys.length; rk++) {\n      var rkey = rkeys[rk];\n      if (rkey !== 'protocol')\n        result[rkey] = relative[rkey];\n    }\n\n    //urlParse appends trailing / to urls like http://www.example.com\n    if (slashedProtocol[result.protocol] &&\n        result.hostname && !result.pathname) {\n      result.path = result.pathname = '/';\n    }\n\n    result.href = result.format();\n    return result;\n  }\n\n  if (relative.protocol && relative.protocol !== result.protocol) {\n    // if it's a known url protocol, then changing\n    // the protocol does weird things\n    // first, if it's not file:, then we MUST have a host,\n    // and if there was a path\n    // to begin with, then we MUST have a path.\n    // if it is file:, then the host is dropped,\n    // because that's known to be hostless.\n    // anything else is assumed to be absolute.\n    if (!slashedProtocol[relative.protocol]) {\n      var keys = Object.keys(relative);\n      for (var v = 0; v < keys.length; v++) {\n        var k = keys[v];\n        result[k] = relative[k];\n      }\n      result.href = result.format();\n      return result;\n    }\n\n    result.protocol = relative.protocol;\n    if (!relative.host && !hostlessProtocol[relative.protocol]) {\n      var relPath = (relative.pathname || '').split('/');\n      while (relPath.length && !(relative.host = relPath.shift()));\n      if (!relative.host) relative.host = '';\n      if (!relative.hostname) relative.hostname = '';\n      if (relPath[0] !== '') relPath.unshift('');\n      if (relPath.length < 2) relPath.unshift('');\n      result.pathname = relPath.join('/');\n    } else {\n      result.pathname = relative.pathname;\n    }\n    result.search = relative.search;\n    result.query = relative.query;\n    result.host = relative.host || '';\n    result.auth = relative.auth;\n    result.hostname = relative.hostname || relative.host;\n    result.port = relative.port;\n    // to support http.request\n    if (result.pathname || result.search) {\n      var p = result.pathname || '';\n      var s = result.search || '';\n      result.path = p + s;\n    }\n    result.slashes = result.slashes || relative.slashes;\n    result.href = result.format();\n    return result;\n  }\n\n  var isSourceAbs = (result.pathname && result.pathname.charAt(0) === '/'),\n      isRelAbs = (\n          relative.host ||\n          relative.pathname && relative.pathname.charAt(0) === '/'\n      ),\n      mustEndAbs = (isRelAbs || isSourceAbs ||\n                    (result.host && relative.pathname)),\n      removeAllDots = mustEndAbs,\n      srcPath = result.pathname && result.pathname.split('/') || [],\n      relPath = relative.pathname && relative.pathname.split('/') || [],\n      psychotic = result.protocol && !slashedProtocol[result.protocol];\n\n  // if the url is a non-slashed url, then relative\n  // links like ../.. should be able\n  // to crawl up to the hostname, as well.  This is strange.\n  // result.protocol has already been set by now.\n  // Later on, put the first path part into the host field.\n  if (psychotic) {\n    result.hostname = '';\n    result.port = null;\n    if (result.host) {\n      if (srcPath[0] === '') srcPath[0] = result.host;\n      else srcPath.unshift(result.host);\n    }\n    result.host = '';\n    if (relative.protocol) {\n      relative.hostname = null;\n      relative.port = null;\n      if (relative.host) {\n        if (relPath[0] === '') relPath[0] = relative.host;\n        else relPath.unshift(relative.host);\n      }\n      relative.host = null;\n    }\n    mustEndAbs = mustEndAbs && (relPath[0] === '' || srcPath[0] === '');\n  }\n\n  if (isRelAbs) {\n    // it's absolute.\n    result.host = (relative.host || relative.host === '') ?\n                  relative.host : result.host;\n    result.hostname = (relative.hostname || relative.hostname === '') ?\n                      relative.hostname : result.hostname;\n    result.search = relative.search;\n    result.query = relative.query;\n    srcPath = relPath;\n    // fall through to the dot-handling below.\n  } else if (relPath.length) {\n    // it's relative\n    // throw away the existing file, and take the new path instead.\n    if (!srcPath) srcPath = [];\n    srcPath.pop();\n    srcPath = srcPath.concat(relPath);\n    result.search = relative.search;\n    result.query = relative.query;\n  } else if (!util.isNullOrUndefined(relative.search)) {\n    // just pull out the search.\n    // like href='?foo'.\n    // Put this after the other two cases because it simplifies the booleans\n    if (psychotic) {\n      result.hostname = result.host = srcPath.shift();\n      //occationaly the auth can get stuck only in host\n      //this especially happens in cases like\n      //url.resolveObject('mailto:local1@domain1', 'local2@domain2')\n      var authInHost = result.host && result.host.indexOf('@') > 0 ?\n                       result.host.split('@') : false;\n      if (authInHost) {\n        result.auth = authInHost.shift();\n        result.host = result.hostname = authInHost.shift();\n      }\n    }\n    result.search = relative.search;\n    result.query = relative.query;\n    //to support http.request\n    if (!util.isNull(result.pathname) || !util.isNull(result.search)) {\n      result.path = (result.pathname ? result.pathname : '') +\n                    (result.search ? result.search : '');\n    }\n    result.href = result.format();\n    return result;\n  }\n\n  if (!srcPath.length) {\n    // no path at all.  easy.\n    // we've already handled the other stuff above.\n    result.pathname = null;\n    //to support http.request\n    if (result.search) {\n      result.path = '/' + result.search;\n    } else {\n      result.path = null;\n    }\n    result.href = result.format();\n    return result;\n  }\n\n  // if a url ENDs in . or .., then it must get a trailing slash.\n  // however, if it ends in anything else non-slashy,\n  // then it must NOT get a trailing slash.\n  var last = srcPath.slice(-1)[0];\n  var hasTrailingSlash = (\n      (result.host || relative.host || srcPath.length > 1) &&\n      (last === '.' || last === '..') || last === '');\n\n  // strip single dots, resolve double dots to parent dir\n  // if the path tries to go above the root, `up` ends up > 0\n  var up = 0;\n  for (var i = srcPath.length; i >= 0; i--) {\n    last = srcPath[i];\n    if (last === '.') {\n      srcPath.splice(i, 1);\n    } else if (last === '..') {\n      srcPath.splice(i, 1);\n      up++;\n    } else if (up) {\n      srcPath.splice(i, 1);\n      up--;\n    }\n  }\n\n  // if the path is allowed to go above the root, restore leading ..s\n  if (!mustEndAbs && !removeAllDots) {\n    for (; up--; up) {\n      srcPath.unshift('..');\n    }\n  }\n\n  if (mustEndAbs && srcPath[0] !== '' &&\n      (!srcPath[0] || srcPath[0].charAt(0) !== '/')) {\n    srcPath.unshift('');\n  }\n\n  if (hasTrailingSlash && (srcPath.join('/').substr(-1) !== '/')) {\n    srcPath.push('');\n  }\n\n  var isAbsolute = srcPath[0] === '' ||\n      (srcPath[0] && srcPath[0].charAt(0) === '/');\n\n  // put the host back\n  if (psychotic) {\n    result.hostname = result.host = isAbsolute ? '' :\n                                    srcPath.length ? srcPath.shift() : '';\n    //occationaly the auth can get stuck only in host\n    //this especially happens in cases like\n    //url.resolveObject('mailto:local1@domain1', 'local2@domain2')\n    var authInHost = result.host && result.host.indexOf('@') > 0 ?\n                     result.host.split('@') : false;\n    if (authInHost) {\n      result.auth = authInHost.shift();\n      result.host = result.hostname = authInHost.shift();\n    }\n  }\n\n  mustEndAbs = mustEndAbs || (result.host && srcPath.length);\n\n  if (mustEndAbs && !isAbsolute) {\n    srcPath.unshift('');\n  }\n\n  if (!srcPath.length) {\n    result.pathname = null;\n    result.path = null;\n  } else {\n    result.pathname = srcPath.join('/');\n  }\n\n  //to support request.http\n  if (!util.isNull(result.pathname) || !util.isNull(result.search)) {\n    result.path = (result.pathname ? result.pathname : '') +\n                  (result.search ? result.search : '');\n  }\n  result.auth = relative.auth || result.auth;\n  result.slashes = result.slashes || relative.slashes;\n  result.href = result.format();\n  return result;\n};\n\nUrl.prototype.parseHost = function() {\n  var host = this.host;\n  var port = portPattern.exec(host);\n  if (port) {\n    port = port[0];\n    if (port !== ':') {\n      this.port = port.substr(1);\n    }\n    host = host.substr(0, host.length - port.length);\n  }\n  if (host) this.hostname = host;\n};\n","'use strict';\n\nmodule.exports = {\n  isString: function(arg) {\n    return typeof(arg) === 'string';\n  },\n  isObject: function(arg) {\n    return typeof(arg) === 'object' && arg !== null;\n  },\n  isNull: function(arg) {\n    return arg === null;\n  },\n  isNullOrUndefined: function(arg) {\n    return arg == null;\n  }\n};\n","'use strict';\n/* eslint-disable\n  no-unused-vars\n*/\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }\n\nfunction _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }\n\nmodule.exports = /*#__PURE__*/function () {\n  function BaseClient() {\n    _classCallCheck(this, BaseClient);\n  }\n\n  _createClass(BaseClient, null, [{\n    key: \"getClientPath\",\n    value: function getClientPath(options) {\n      throw new Error('Client needs implementation');\n    }\n  }]);\n\n  return BaseClient;\n}();","'use strict';\n/* eslint-disable\n  no-unused-vars\n*/\n\nfunction _typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }\n\nfunction _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function\"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }\n\nfunction _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }\n\nfunction _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }\n\nfunction _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === \"object\" || typeof call === \"function\")) { return call; } return _assertThisInitialized(self); }\n\nfunction _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return self; }\n\nfunction _isNativeReflectConstruct() { if (typeof Reflect === \"undefined\" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === \"function\") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }\n\nfunction _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }\n\nvar SockJS = require('sockjs-client/dist/sockjs');\n\nvar BaseClient = require('./BaseClient');\n\nmodule.exports = /*#__PURE__*/function (_BaseClient) {\n  _inherits(SockJSClient, _BaseClient);\n\n  var _super = _createSuper(SockJSClient);\n\n  function SockJSClient(url) {\n    var _this;\n\n    _classCallCheck(this, SockJSClient);\n\n    _this = _super.call(this);\n    _this.sock = new SockJS(url);\n\n    _this.sock.onerror = function (err) {// TODO: use logger to log the error event once client and client-src\n      // are reorganized to have the same directory structure\n    };\n\n    return _this;\n  }\n\n  _createClass(SockJSClient, [{\n    key: \"onOpen\",\n    value: function onOpen(f) {\n      this.sock.onopen = f;\n    }\n  }, {\n    key: \"onClose\",\n    value: function onClose(f) {\n      this.sock.onclose = f;\n    } // call f with the message string as the first argument\n\n  }, {\n    key: \"onMessage\",\n    value: function onMessage(f) {\n      this.sock.onmessage = function (e) {\n        f(e.data);\n      };\n    }\n  }], [{\n    key: \"getClientPath\",\n    value: function getClientPath(options) {\n      return require.resolve('./SockJSClient');\n    }\n  }]);\n\n  return SockJSClient;\n}(BaseClient);","'use strict';\n/* global __resourceQuery WorkerGlobalScope self */\n\n/* eslint prefer-destructuring: off */\n\nvar stripAnsi = require('strip-ansi');\n\nvar socket = require('./socket');\n\nvar overlay = require('./overlay');\n\nvar _require = require('./utils/log'),\n    log = _require.log,\n    setLogLevel = _require.setLogLevel;\n\nvar sendMessage = require('./utils/sendMessage');\n\nvar reloadApp = require('./utils/reloadApp');\n\nvar createSocketUrl = require('./utils/createSocketUrl');\n\nvar status = {\n  isUnloading: false,\n  currentHash: ''\n};\nvar options = {\n  hot: false,\n  hotReload: true,\n  liveReload: false,\n  initial: true,\n  useWarningOverlay: false,\n  useErrorOverlay: false,\n  useProgress: false\n};\nvar socketUrl = createSocketUrl(__resourceQuery);\nself.addEventListener('beforeunload', function () {\n  status.isUnloading = true;\n});\n\nif (typeof window !== 'undefined') {\n  var qs = window.location.search.toLowerCase();\n  options.hotReload = qs.indexOf('hotreload=false') === -1;\n}\n\nvar onSocketMessage = {\n  hot: function hot() {\n    options.hot = true;\n    log.info('[WDS] Hot Module Replacement enabled.');\n  },\n  liveReload: function liveReload() {\n    options.liveReload = true;\n    log.info('[WDS] Live Reloading enabled.');\n  },\n  invalid: function invalid() {\n    log.info('[WDS] App updated. Recompiling...'); // fixes #1042. overlay doesn't clear if errors are fixed but warnings remain.\n\n    if (options.useWarningOverlay || options.useErrorOverlay) {\n      overlay.clear();\n    }\n\n    sendMessage('Invalid');\n  },\n  hash: function hash(_hash) {\n    status.currentHash = _hash;\n  },\n  'still-ok': function stillOk() {\n    log.info('[WDS] Nothing changed.');\n\n    if (options.useWarningOverlay || options.useErrorOverlay) {\n      overlay.clear();\n    }\n\n    sendMessage('StillOk');\n  },\n  'log-level': function logLevel(level) {\n    var hotCtx = require.context('webpack/hot', false, /^\\.\\/log$/);\n\n    if (hotCtx.keys().indexOf('./log') !== -1) {\n      hotCtx('./log').setLogLevel(level);\n    }\n\n    setLogLevel(level);\n  },\n  overlay: function overlay(value) {\n    if (typeof document !== 'undefined') {\n      if (typeof value === 'boolean') {\n        options.useWarningOverlay = false;\n        options.useErrorOverlay = value;\n      } else if (value) {\n        options.useWarningOverlay = value.warnings;\n        options.useErrorOverlay = value.errors;\n      }\n    }\n  },\n  progress: function progress(_progress) {\n    if (typeof document !== 'undefined') {\n      options.useProgress = _progress;\n    }\n  },\n  'progress-update': function progressUpdate(data) {\n    if (options.useProgress) {\n      log.info(\"[WDS] \".concat(data.percent, \"% - \").concat(data.msg, \".\"));\n    }\n\n    sendMessage('Progress', data);\n  },\n  ok: function ok() {\n    sendMessage('Ok');\n\n    if (options.useWarningOverlay || options.useErrorOverlay) {\n      overlay.clear();\n    }\n\n    if (options.initial) {\n      return options.initial = false;\n    } // eslint-disable-line no-return-assign\n\n\n    reloadApp(options, status);\n  },\n  'content-changed': function contentChanged() {\n    log.info('[WDS] Content base changed. Reloading...');\n    self.location.reload();\n  },\n  warnings: function warnings(_warnings) {\n    log.warn('[WDS] Warnings while compiling.');\n\n    var strippedWarnings = _warnings.map(function (warning) {\n      return stripAnsi(warning);\n    });\n\n    sendMessage('Warnings', strippedWarnings);\n\n    for (var i = 0; i < strippedWarnings.length; i++) {\n      log.warn(strippedWarnings[i]);\n    }\n\n    if (options.useWarningOverlay) {\n      overlay.showMessage(_warnings);\n    }\n\n    if (options.initial) {\n      return options.initial = false;\n    } // eslint-disable-line no-return-assign\n\n\n    reloadApp(options, status);\n  },\n  errors: function errors(_errors) {\n    log.error('[WDS] Errors while compiling. Reload prevented.');\n\n    var strippedErrors = _errors.map(function (error) {\n      return stripAnsi(error);\n    });\n\n    sendMessage('Errors', strippedErrors);\n\n    for (var i = 0; i < strippedErrors.length; i++) {\n      log.error(strippedErrors[i]);\n    }\n\n    if (options.useErrorOverlay) {\n      overlay.showMessage(_errors);\n    }\n\n    options.initial = false;\n  },\n  error: function error(_error) {\n    log.error(_error);\n  },\n  close: function close() {\n    log.error('[WDS] Disconnected!');\n    sendMessage('Close');\n  }\n};\nsocket(socketUrl, onSocketMessage);","'use strict'; // The error overlay is inspired (and mostly copied) from Create React App (https://github.com/facebookincubator/create-react-app)\n// They, in turn, got inspired by webpack-hot-middleware (https://github.com/glenjamin/webpack-hot-middleware).\n\nvar ansiHTML = require('ansi-html');\n\nvar _require = require('html-entities'),\n    AllHtmlEntities = _require.AllHtmlEntities;\n\nvar entities = new AllHtmlEntities();\nvar colors = {\n  reset: ['transparent', 'transparent'],\n  black: '181818',\n  red: 'E36049',\n  green: 'B3CB74',\n  yellow: 'FFD080',\n  blue: '7CAFC2',\n  magenta: '7FACCA',\n  cyan: 'C3C2EF',\n  lightgrey: 'EBE7E3',\n  darkgrey: '6D7891'\n};\nvar overlayIframe = null;\nvar overlayDiv = null;\nvar lastOnOverlayDivReady = null;\nansiHTML.setColors(colors);\n\nfunction createOverlayIframe(onIframeLoad) {\n  var iframe = document.createElement('iframe');\n  iframe.id = 'webpack-dev-server-client-overlay';\n  iframe.src = 'about:blank';\n  iframe.style.position = 'fixed';\n  iframe.style.left = 0;\n  iframe.style.top = 0;\n  iframe.style.right = 0;\n  iframe.style.bottom = 0;\n  iframe.style.width = '100vw';\n  iframe.style.height = '100vh';\n  iframe.style.border = 'none';\n  iframe.style.zIndex = 9999999999;\n  iframe.onload = onIframeLoad;\n  return iframe;\n}\n\nfunction addOverlayDivTo(iframe) {\n  var div = iframe.contentDocument.createElement('div');\n  div.id = 'webpack-dev-server-client-overlay-div';\n  div.style.position = 'fixed';\n  div.style.boxSizing = 'border-box';\n  div.style.left = 0;\n  div.style.top = 0;\n  div.style.right = 0;\n  div.style.bottom = 0;\n  div.style.width = '100vw';\n  div.style.height = '100vh';\n  div.style.backgroundColor = 'rgba(0, 0, 0, 0.85)';\n  div.style.color = '#E8E8E8';\n  div.style.fontFamily = 'Menlo, Consolas, monospace';\n  div.style.fontSize = 'large';\n  div.style.padding = '2rem';\n  div.style.lineHeight = '1.2';\n  div.style.whiteSpace = 'pre-wrap';\n  div.style.overflow = 'auto';\n  iframe.contentDocument.body.appendChild(div);\n  return div;\n}\n\nfunction ensureOverlayDivExists(onOverlayDivReady) {\n  if (overlayDiv) {\n    // Everything is ready, call the callback right away.\n    onOverlayDivReady(overlayDiv);\n    return;\n  } // Creating an iframe may be asynchronous so we'll schedule the callback.\n  // In case of multiple calls, last callback wins.\n\n\n  lastOnOverlayDivReady = onOverlayDivReady;\n\n  if (overlayIframe) {\n    // We've already created it.\n    return;\n  } // Create iframe and, when it is ready, a div inside it.\n\n\n  overlayIframe = createOverlayIframe(function () {\n    overlayDiv = addOverlayDivTo(overlayIframe); // Now we can talk!\n\n    lastOnOverlayDivReady(overlayDiv);\n  }); // Zalgo alert: onIframeLoad() will be called either synchronously\n  // or asynchronously depending on the browser.\n  // We delay adding it so `overlayIframe` is set when `onIframeLoad` fires.\n\n  document.body.appendChild(overlayIframe);\n} // Successful compilation.\n\n\nfunction clear() {\n  if (!overlayDiv) {\n    // It is not there in the first place.\n    return;\n  } // Clean up and reset internal state.\n\n\n  document.body.removeChild(overlayIframe);\n  overlayDiv = null;\n  overlayIframe = null;\n  lastOnOverlayDivReady = null;\n} // Compilation with errors (e.g. syntax error or missing modules).\n\n\nfunction showMessage(messages) {\n  ensureOverlayDivExists(function (div) {\n    // Make it look similar to our terminal.\n    div.innerHTML = \"<span style=\\\"color: #\".concat(colors.red, \"\\\">Failed to compile.</span><br><br>\").concat(ansiHTML(entities.encode(messages[0])));\n  });\n}\n\nmodule.exports = {\n  clear: clear,\n  showMessage: showMessage\n};","'use strict';\n/* global __webpack_dev_server_client__ */\n\n/* eslint-disable\n  camelcase\n*/\n// this SockJSClient is here as a default fallback, in case inline mode\n// is off or the client is not injected. This will be switched to\n// WebsocketClient when it becomes the default\n// important: the path to SockJSClient here is made to work in the 'client'\n// directory, but is updated via the webpack compilation when compiled from\n// the 'client-src' directory\n\nvar Client = typeof __webpack_dev_server_client__ !== 'undefined' ? __webpack_dev_server_client__ : // eslint-disable-next-line import/no-unresolved\nrequire('./clients/SockJSClient');\nvar retries = 0;\nvar client = null;\n\nvar socket = function initSocket(url, handlers) {\n  client = new Client(url);\n  client.onOpen(function () {\n    retries = 0;\n  });\n  client.onClose(function () {\n    if (retries === 0) {\n      handlers.close();\n    } // Try to reconnect.\n\n\n    client = null; // After 10 retries stop trying, to prevent logspam.\n\n    if (retries <= 10) {\n      // Exponentially increase timeout to reconnect.\n      // Respectfully copied from the package `got`.\n      // eslint-disable-next-line no-mixed-operators, no-restricted-properties\n      var retryInMs = 1000 * Math.pow(2, retries) + Math.random() * 100;\n      retries += 1;\n      setTimeout(function () {\n        socket(url, handlers);\n      }, retryInMs);\n    }\n  });\n  client.onMessage(function (data) {\n    var msg = JSON.parse(data);\n\n    if (handlers[msg.type]) {\n      handlers[msg.type](msg.data);\n    }\n  });\n};\n\nmodule.exports = socket;","'use strict';\n/* global self */\n\nvar url = require('url');\n\nvar getCurrentScriptSource = require('./getCurrentScriptSource');\n\nfunction createSocketUrl(resourceQuery, currentLocation) {\n  var urlParts;\n\n  if (typeof resourceQuery === 'string' && resourceQuery !== '') {\n    // If this bundle is inlined, use the resource query to get the correct url.\n    // format is like `?http://0.0.0.0:8096&sockPort=8097&sockHost=localhost`\n    urlParts = url.parse(resourceQuery // strip leading `?` from query string to get a valid URL\n    .substr(1) // replace first `&` with `?` to have a valid query string\n    .replace('&', '?'), true);\n  } else {\n    // Else, get the url from the <script> this file was called with.\n    var scriptHost = getCurrentScriptSource();\n    urlParts = url.parse(scriptHost || '/', true, true);\n  } // Use parameter to allow passing location in unit tests\n\n\n  if (typeof currentLocation === 'string' && currentLocation !== '') {\n    currentLocation = url.parse(currentLocation);\n  } else {\n    currentLocation = self.location;\n  }\n\n  return getSocketUrl(urlParts, currentLocation);\n}\n/*\n * Gets socket URL based on Script Source/Location\n * (scriptSrc: URL, location: URL) -> URL\n */\n\n\nfunction getSocketUrl(urlParts, loc) {\n  var auth = urlParts.auth,\n      query = urlParts.query;\n  var hostname = urlParts.hostname,\n      protocol = urlParts.protocol,\n      port = urlParts.port;\n\n  if (!port || port === '0') {\n    port = loc.port;\n  } // check ipv4 and ipv6 `all hostname`\n  // why do we need this check?\n  // hostname n/a for file protocol (example, when using electron, ionic)\n  // see: https://github.com/webpack/webpack-dev-server/pull/384\n\n\n  if ((hostname === '0.0.0.0' || hostname === '::') && loc.hostname && loc.protocol.indexOf('http') === 0) {\n    hostname = loc.hostname;\n  } // `hostname` can be empty when the script path is relative. In that case, specifying\n  // a protocol would result in an invalid URL.\n  // When https is used in the app, secure websockets are always necessary\n  // because the browser doesn't accept non-secure websockets.\n\n\n  if (hostname && hostname !== '127.0.0.1' && (loc.protocol === 'https:' || urlParts.hostname === '0.0.0.0')) {\n    protocol = loc.protocol;\n  } // all of these sock url params are optionally passed in through\n  // resourceQuery, so we need to fall back to the default if\n  // they are not provided\n\n\n  var sockHost = query.sockHost || hostname;\n  var sockPath = query.sockPath || '/sockjs-node';\n  var sockPort = query.sockPort || port;\n\n  if (sockPort === 'location') {\n    sockPort = loc.port;\n  }\n\n  return url.format({\n    protocol: protocol,\n    auth: auth,\n    hostname: sockHost,\n    port: sockPort,\n    // If sockPath is provided it'll be passed in via the resourceQuery as a\n    // query param so it has to be parsed out of the querystring in order for the\n    // client to open the socket to the correct location.\n    pathname: sockPath\n  });\n}\n\nmodule.exports = createSocketUrl;","'use strict';\n\nfunction getCurrentScriptSource() {\n  // `document.currentScript` is the most accurate way to find the current script,\n  // but is not supported in all browsers.\n  if (document.currentScript) {\n    return document.currentScript.getAttribute('src');\n  } // Fall back to getting all scripts in the document.\n\n\n  var scriptElements = document.scripts || [];\n  var currentScript = scriptElements[scriptElements.length - 1];\n\n  if (currentScript) {\n    return currentScript.getAttribute('src');\n  } // Fail as there was no script to use.\n\n\n  throw new Error('[WDS] Failed to get current script source.');\n}\n\nmodule.exports = getCurrentScriptSource;","'use strict';\n\nvar log = require('loglevel').getLogger('webpack-dev-server');\n\nvar INFO = 'info';\nvar WARN = 'warn';\nvar ERROR = 'error';\nvar DEBUG = 'debug';\nvar TRACE = 'trace';\nvar SILENT = 'silent'; // deprecated\n// TODO: remove these at major released\n// https://github.com/webpack/webpack-dev-server/pull/1825\n\nvar WARNING = 'warning';\nvar NONE = 'none'; // Set the default log level\n\nlog.setDefaultLevel(INFO);\n\nfunction setLogLevel(level) {\n  switch (level) {\n    case INFO:\n    case WARN:\n    case ERROR:\n    case DEBUG:\n    case TRACE:\n      log.setLevel(level);\n      break;\n    // deprecated\n\n    case WARNING:\n      // loglevel's warning name is different from webpack's\n      log.setLevel('warn');\n      break;\n    // deprecated\n\n    case NONE:\n    case SILENT:\n      log.disableAll();\n      break;\n\n    default:\n      log.error(\"[WDS] Unknown clientLogLevel '\".concat(level, \"'\"));\n  }\n}\n\nmodule.exports = {\n  log: log,\n  setLogLevel: setLogLevel\n};","'use strict';\n/* global WorkerGlobalScope self */\n\nvar _require = require('./log'),\n    log = _require.log;\n\nfunction reloadApp(_ref, _ref2) {\n  var hotReload = _ref.hotReload,\n      hot = _ref.hot,\n      liveReload = _ref.liveReload;\n  var isUnloading = _ref2.isUnloading,\n      currentHash = _ref2.currentHash;\n\n  if (isUnloading || !hotReload) {\n    return;\n  }\n\n  if (hot) {\n    log.info('[WDS] App hot update...');\n\n    var hotEmitter = require('webpack/hot/emitter');\n\n    hotEmitter.emit('webpackHotUpdate', currentHash);\n\n    if (typeof self !== 'undefined' && self.window) {\n      // broadcast update to window\n      self.postMessage(\"webpackHotUpdate\".concat(currentHash), '*');\n    }\n  } // allow refreshing the page only if liveReload isn't disabled\n  else if (liveReload) {\n      var rootWindow = self; // use parent window for reload (in case we're in an iframe with no valid src)\n\n      var intervalId = self.setInterval(function () {\n        if (rootWindow.location.protocol !== 'about:') {\n          // reload immediately if protocol is valid\n          applyReload(rootWindow, intervalId);\n        } else {\n          rootWindow = rootWindow.parent;\n\n          if (rootWindow.parent === rootWindow) {\n            // if parent equals current window we've reached the root which would continue forever, so trigger a reload anyways\n            applyReload(rootWindow, intervalId);\n          }\n        }\n      });\n    }\n\n  function applyReload(rootWindow, intervalId) {\n    clearInterval(intervalId);\n    log.info('[WDS] App updated. Reloading...');\n    rootWindow.location.reload();\n  }\n}\n\nmodule.exports = reloadApp;","'use strict';\n/* global __resourceQuery WorkerGlobalScope self */\n// Send messages to the outside, so plugins can consume it.\n\nfunction sendMsg(type, data) {\n  if (typeof self !== 'undefined' && (typeof WorkerGlobalScope === 'undefined' || !(self instanceof WorkerGlobalScope))) {\n    self.postMessage({\n      type: \"webpack\".concat(type),\n      data: data\n    }, '*');\n  }\n}\n\nmodule.exports = sendMsg;","var EventEmitter = require(\"events\");\nmodule.exports = new EventEmitter();\n","var logLevel = \"info\";\n\nfunction dummy() {}\n\nfunction shouldLog(level) {\n\tvar shouldLog =\n\t\t(logLevel === \"info\" && level === \"info\") ||\n\t\t([\"info\", \"warning\"].indexOf(logLevel) >= 0 && level === \"warning\") ||\n\t\t([\"info\", \"warning\", \"error\"].indexOf(logLevel) >= 0 && level === \"error\");\n\treturn shouldLog;\n}\n\nfunction logGroup(logFn) {\n\treturn function (level, msg) {\n\t\tif (shouldLog(level)) {\n\t\t\tlogFn(msg);\n\t\t}\n\t};\n}\n\nmodule.exports = function (level, msg) {\n\tif (shouldLog(level)) {\n\t\tif (level === \"info\") {\n\t\t\tconsole.log(msg);\n\t\t} else if (level === \"warning\") {\n\t\t\tconsole.warn(msg);\n\t\t} else if (level === \"error\") {\n\t\t\tconsole.error(msg);\n\t\t}\n\t}\n};\n\n/* eslint-disable node/no-unsupported-features/node-builtins */\nvar group = console.group || dummy;\nvar groupCollapsed = console.groupCollapsed || dummy;\nvar groupEnd = console.groupEnd || dummy;\n/* eslint-enable node/no-unsupported-features/node-builtins */\n\nmodule.exports.group = logGroup(group);\n\nmodule.exports.groupCollapsed = logGroup(groupCollapsed);\n\nmodule.exports.groupEnd = logGroup(groupEnd);\n\nmodule.exports.setLogLevel = function (level) {\n\tlogLevel = level;\n};\n\nmodule.exports.formatError = function (err) {\n\tvar message = err.message;\n\tvar stack = err.stack;\n\tif (!stack) {\n\t\treturn message;\n\t} else if (stack.indexOf(message) < 0) {\n\t\treturn message + \"\\n\" + stack;\n\t} else {\n\t\treturn stack;\n\t}\n};\n","var map = {\n\t\"./log\": \"./node_modules/webpack/hot/log.js\"\n};\n\n\nfunction webpackContext(req) {\n\tvar id = webpackContextResolve(req);\n\treturn __webpack_require__(id);\n}\nfunction webpackContextResolve(req) {\n\tif(!__webpack_require__.o(map, req)) {\n\t\tvar e = new Error(\"Cannot find module '\" + req + \"'\");\n\t\te.code = 'MODULE_NOT_FOUND';\n\t\tthrow e;\n\t}\n\treturn map[req];\n}\nwebpackContext.keys = function webpackContextKeys() {\n\treturn Object.keys(map);\n};\nwebpackContext.resolve = webpackContextResolve;\nmodule.exports = webpackContext;\nwebpackContext.id = \"./node_modules/webpack/hot sync ^\\\\.\\\\/log$\";","// The module cache\nvar __webpack_module_cache__ = {};\n\n// The require function\nfunction __webpack_require__(moduleId) {\n\t// Check if module is in cache\n\tif(__webpack_module_cache__[moduleId]) {\n\t\treturn __webpack_module_cache__[moduleId].exports;\n\t}\n\t// Create a new module (and put it into the cache)\n\tvar module = __webpack_module_cache__[moduleId] = {\n\t\t// no module.id needed\n\t\t// no module.loaded needed\n\t\texports: {}\n\t};\n\n\t// Execute the module function\n\t__webpack_modules__[moduleId].call(module.exports, module, module.exports, __webpack_require__);\n\n\t// Return the exports of the module\n\treturn module.exports;\n}\n\n","// getDefaultExport function for compatibility with non-harmony modules\n__webpack_require__.n = (module) => {\n\tvar getter = module && module.__esModule ?\n\t\t() => module['default'] :\n\t\t() => module;\n\t__webpack_require__.d(getter, { a: getter });\n\treturn getter;\n};","// define getter functions for harmony exports\n__webpack_require__.d = (exports, definition) => {\n\tfor(var key in definition) {\n\t\tif(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) {\n\t\t\tObject.defineProperty(exports, key, { enumerable: true, get: definition[key] });\n\t\t}\n\t}\n};","__webpack_require__.g = (function() {\n\tif (typeof globalThis === 'object') return globalThis;\n\ttry {\n\t\treturn this || new Function('return this')();\n\t} catch (e) {\n\t\tif (typeof window === 'object') return window;\n\t}\n})();","__webpack_require__.o = (obj, prop) => Object.prototype.hasOwnProperty.call(obj, prop)","// define __esModule on exports\n__webpack_require__.r = (exports) => {\n\tif(typeof Symbol !== 'undefined' && Symbol.toStringTag) {\n\t\tObject.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });\n\t}\n\tObject.defineProperty(exports, '__esModule', { value: true });\n};","// startup\n// Load entry module\n__webpack_require__(\"./src/app.js\");\n// This entry module used 'exports' so it can't be inlined\n__webpack_require__(\"./node_modules/webpack-dev-server/client/index.js?http://localhost:9000\");\n"],"sourceRoot":""}
\ No newline at end of file
diff --git a/packages/viewer/src/modules/Converter.js b/packages/viewer/src/modules/Converter.js
index 46cae5567..a05399490 100644
--- a/packages/viewer/src/modules/Converter.js
+++ b/packages/viewer/src/modules/Converter.js
@@ -1,4 +1,6 @@
 import * as THREE from 'three'
+import { NURBSCurve } from 'three/examples/jsm/curves/NURBSCurve'
+import { BufferGeometryUtils } from 'three/examples/jsm/utils/BufferGeometryUtils'
 import ObjectWrapper from './ObjectWrapper'
 import { getConversionFactor } from './Units'
 
@@ -13,6 +15,7 @@ export default class Coverter {
     }
 
     this.objectLoader = objectLoader
+    this.curveSegmentLength = 0.1
   }
 
   /**
@@ -43,7 +46,7 @@ export default class Coverter {
         callback( await this[`${type}ToBufferGeometry`]( obj.data || obj ) )
         return
       } catch ( e ) {
-        console.warn( `(Traversing - direct) Failed to convert ${type} with id: ${obj.id}` )
+        console.warn( `(Traversing - direct) Failed to convert ${type} with id: ${obj.id}`, e )
       }
     }
 
@@ -61,7 +64,7 @@ export default class Coverter {
 
         // return // returning here is faster but excludes objects that have a display value and displayable children (ie, a wall with windows)
       } catch ( e ) {
-        console.warn( `(Traversing) Failed to convert obj with id: ${obj.id}` )
+        console.warn( `(Traversing) Failed to convert obj with id: ${obj.id} — ${e.message}` )
       }
     }
 
@@ -204,13 +207,202 @@ export default class Coverter {
   }
 
   // TODOs:
-  // async PointToBufferGeometry( obj ) {}
-  // async LineToBufferGeometry( obj ) {}
-  // async PolylineToBufferGeometry( obj ) {}
-  // async PolycurveToBufferGeometry( obj ) {}
-  // async CurveToBufferGeometry( obj ) {}
-  // async CircleToBufferGeometry( obj ) {}
-  // async ArcToBufferGeometry( obj ) {}
-  // async EllipseToBufferGeometry( obj ) {}
+  async PointToBufferGeometry( obj ) {
+    let conversionFactor = getConversionFactor( obj.units )
+    const v = new THREE.Vector3( obj.value[0]* conversionFactor,obj.value[1]* conversionFactor,obj.value[2] * conversionFactor )
+    let buf = new THREE.BufferGeometry().setFromPoints( [ v ] )
+    
+    delete obj.value
+    delete obj.speckle_type
+
+    return new ObjectWrapper( buf, obj, 'point' )
+  }
+
+  async LineToBufferGeometry( obj ) {
+    return this.PolylineToBufferGeometry( obj )
+  }
+  async PolylineToBufferGeometry( object ) {
+    let obj = {}
+    Object.assign( obj,object )
+    delete object.value
+    delete object.speckle_type
+
+    let conversionFactor = getConversionFactor( obj.units )
+    
+    obj.value = await this.dechunk( obj.value )
+    
+    const points = []
+    for ( let i = 0; i < obj.value.length; i+=3 ) {
+      points.push( new THREE.Vector3( obj.value[ i ]* conversionFactor,obj.value[i+1]* conversionFactor,obj.value[i+2] * conversionFactor ) )
+    }
+    const geometry = new THREE.BufferGeometry().setFromPoints( points )
+
+    delete obj.value
+
+    return new ObjectWrapper( geometry, obj, 'line' )
+  }
+
+  async PolycurveToBufferGeometry( object ) {
+    let obj = {}
+    Object.assign( obj,object )
+    delete object.value
+    delete object.speckle_type
+    delete object.displayValue
+    delete object.segments
+
+    console.log( 'Polycurve to buffer', obj )
+
+    let buffers = []
+    for ( let i = 0; i < obj.segments.length; i++ ) {
+      const element = obj.segments[i]
+      const conv = await this.convert( element )
+      buffers.push( conv?.bufferGeometry )
+    }
+    let geometry = BufferGeometryUtils.mergeBufferGeometries( buffers )
+    
+    delete obj.segments
+    delete obj.speckle_type
+
+    return new ObjectWrapper( geometry , obj, 'line' )
+  }
+  
+  async CurveToBufferGeometry( object ) {
+    let obj = {}
+    Object.assign( obj,object )
+    delete object.value
+    delete object.speckle_type
+    delete object.displayValue
+    
+    obj.points = await this.dechunk( obj.points )
+    obj.weights = await this.dechunk( obj.weights )
+    obj.knots = await this.dechunk( obj.knots )
+
+    try {
+      console.log( 'Curve to buffer', obj )
+      let conversionFactor = getConversionFactor( obj.units )
+      
+      // Convert points+weights to Vector4
+      const points = []
+      for ( let i = 0; i < obj.points.length; i+=3 ) {
+        points.push( new THREE.Vector4( obj.points[ i ]* conversionFactor,obj.points[i+1]* conversionFactor,obj.points[i+2] * conversionFactor, obj.weights[i/3] * conversionFactor ) )
+      }
+      // Convert knots from rhino compact format to normal format.
+      let knots = [ obj.knots[0] ]
+      knots = knots.concat( obj.knots )
+      knots.push( knots[knots.length -1] )
+  
+      // Create the nurbs curve
+      const curve = new NURBSCurve( obj.degree, knots, points, null, null )
+      
+      // Delete everything unnecessary from the metadata object.
+      delete obj.speckle_type
+      delete obj.displayValue
+      delete obj.points
+      delete obj.weights
+      delete obj.knots
+      
+      // Compute appropriate curve subdivisions
+      let div = curve.getLength() / 0.1
+      div = parseInt( div.toString() ) 
+      if ( div < 20 ) div = 20
+      if ( div > 4000 ) div = 4000
+
+      // Divide the nurbs curve in points
+      var pts = curve.getPoints( div )
+      return new ObjectWrapper( new THREE.BufferGeometry().setFromPoints( pts ), obj, 'line' )
+
+    } catch ( e ) {
+      console.warn( 'Error converting nurbs curve, falling back to displayValue', obj )
+      const poly = await this.PolylineToBufferGeometry( obj.displayValue )
+
+      delete obj.speckle_type
+      delete obj.displayValue
+      delete obj.points
+      delete obj.weights
+      delete obj.knots
+
+      return new ObjectWrapper( poly.bufferGeometry, obj, 'line' )
+    }
+  }
+
+  async CircleToBufferGeometry( obj ) {
+    const points = this.getCircularCurvePoints( obj.plane, obj.radius )
+    const geometry = new THREE.BufferGeometry().setFromPoints( points )
+
+    delete obj.value
+    delete obj.speckle_type
+
+    return new ObjectWrapper( geometry, obj, 'line' )
+  }
+  
+
+  async ArcToBufferGeometry( obj ) {
+    const points = this.getCircularCurvePoints( obj.plane, obj.radius, obj.startAngle, obj.endAngle )
+    const geometry = new THREE.BufferGeometry().setFromPoints( points )
+
+    delete obj.speckle_type
+    delete obj.startPoint
+    delete obj.endPoint
+    delete obj.plane
+    delete obj.midPoint
+
+    return new ObjectWrapper( geometry, obj, 'line' )
+  }
+  getCircularCurvePoints( plane, radius, startAngle = 0, endAngle = 2*Math.PI, res = this.curveSegmentLength ) {
+
+    // Get alignment vectors
+    const center = new THREE.Vector3( plane.origin.value[0], plane.origin.value[1], plane.origin.value[2] )
+    const xAxis = new THREE.Vector3( plane.xdir.value[0], plane.xdir.value[1], plane.xdir.value[2] )
+    const yAxis = new THREE.Vector3( plane.ydir.value[0], plane.ydir.value[1], plane.ydir.value[2] )
+
+    // Determine resolution
+    let resolution = ( endAngle - startAngle ) * radius / res
+    resolution = parseInt( resolution.toString() )
+
+    let points = []
+
+    for ( let index = 0; index <= resolution; index++ ) {
+      let t = startAngle + index * ( endAngle - startAngle ) / resolution
+      let x = Math.cos( t ) * radius
+      let y = Math.sin( t ) * radius
+      const xMove = new THREE.Vector3( xAxis.x * x, xAxis.y * x, xAxis.z * x )
+      const yMove = new THREE.Vector3( yAxis.x * y, yAxis.y * y, yAxis.z * y )
+
+      let pt = new THREE.Vector3().addVectors( xMove, yMove ).add( center )
+      points.push( pt )
+    }
+    return points
+  }
+
+  async EllipseToBufferGeometry( obj ) {
+    
+    const center = new THREE.Vector3( obj.plane.origin.value[0],obj.plane.origin.value[1],obj.plane.origin.value[2] )
+    const xAxis = new THREE.Vector3( obj.plane.xdir.value[0],obj.plane.xdir.value[1],obj.plane.xdir.value[2] )
+    const yAxis = new THREE.Vector3( obj.plane.ydir.value[0],obj.plane.ydir.value[1],obj.plane.ydir.value[2] )
+    console.log( center,xAxis,yAxis )
+
+    let resolution = 2 * Math.PI * obj.radius1 / 0.1
+    resolution = parseInt( resolution.toString() )
+    let points = []
+
+    for ( let index = 0; index <= resolution; index++ ) {
+      let t = index * Math.PI * 2 / resolution
+      let x = Math.cos( t ) * obj.radius1
+      let y = Math.sin( t ) * obj.radius2
+      const xMove = new THREE.Vector3( xAxis.x * x, xAxis.y * x, xAxis.z * x )
+      const yMove = new THREE.Vector3( yAxis.x * y, yAxis.y * y, yAxis.z * y )
+  
+      let pt = new THREE.Vector3().addVectors( xMove, yMove ).add( center )
+      points.push( pt )
+    }
+    console.log( points )
+    const geometry = new THREE.BufferGeometry().setFromPoints( points )
+
+    delete obj.value
+    delete obj.speckle_type
+
+    return new ObjectWrapper( geometry, obj, 'line' )
+  }
+  
   // async SurfaceToBufferGeometry( obj ) {}
 }
diff --git a/packages/viewer/src/modules/SceneObjectManager.js b/packages/viewer/src/modules/SceneObjectManager.js
index 34556fa9d..36e3ce5f6 100644
--- a/packages/viewer/src/modules/SceneObjectManager.js
+++ b/packages/viewer/src/modules/SceneObjectManager.js
@@ -1,7 +1,6 @@
 import * as THREE from 'three'
 import debounce from 'lodash.debounce'
 
-
 /**
  * Manages objects and provides some convenience methods to focus on the entire scene, or one specific object.
  */
@@ -42,8 +41,9 @@ export default class SceneObjectManager {
       envMap: this.viewer.cubeCamera.renderTarget.texture
     } )
 
-    // this.lineMaterial = new
+    this.lineMaterial = new THREE.LineBasicMaterial( { color: 0x000000 } )
 
+    this.pointMaterial = new THREE.PointsMaterial( { size: 10, sizeAttenuation: false, color: 0x000000 } )
 
     this.objectIds = []
     this.postLoad = debounce( () => { this._postLoadFunction() }, 200 )
@@ -52,7 +52,7 @@ export default class SceneObjectManager {
   }
 
   get objects() {
-    return [ ...this.solidObjects.children, ...this.transparentObjects.children ]
+    return [ ...this.solidObjects.children, ...this.transparentObjects.children, ...this.lineObjects.children, ...this.pointObjects.children ]
   }
 
   // Note: we might switch later down the line from cloning materials to solely
@@ -129,10 +129,18 @@ export default class SceneObjectManager {
 
   addLine( wrapper ) {
     const line = new THREE.Line( wrapper.bufferGeometry, this.lineMaterial )
+    line.userData = wrapper.meta
+    line.uuid = wrapper.meta.id
+    this.objectIds.push( line.uuid )
+    this.lineObjects.add( line )
   }
 
   addPoint( wrapper ){
-    // TODO
+    var dot = new THREE.Points( wrapper.bufferGeometry, this.pointMaterial )
+    dot.userData = wrapper.meta
+    dot.uuid = wrapper.meta.id
+    this.objectIds.push( dot.uuid )
+    this.pointObjects.add( dot )
   }
 
   removeObject( id ) {
diff --git a/packages/viewer/src/modules/ViewerObjectLoader.js b/packages/viewer/src/modules/ViewerObjectLoader.js
index e218699ef..505eca842 100644
--- a/packages/viewer/src/modules/ViewerObjectLoader.js
+++ b/packages/viewer/src/modules/ViewerObjectLoader.js
@@ -51,7 +51,7 @@ export default class ViewerObjectLoader {
         total = obj.totalChildrenCount
       }
       current++
-      this.viewer.emit( 'load-progress', { progress: current/total, id: this.objectId } )
+      this.viewer.emit( 'load-progress', { progress: current/( total+1 ), id: this.objectId } )
     }
   }
 }