feat(viewer): adds selection & doubleclick events

packages/viewer/src/app.js

@@ -17,6 +17,16 @@ window.loadData = async function LoadData( url ) {
   await v.loadObject( url, token )
 }
 
+v.on( 'select', objects => {
+  console.info( `Selection event. Current selection count: ${objects.length}.` )
+  console.log( objects )
+} )
+
+v.on( 'object-doubleclicked', obj => {
+  console.info( 'Object double click event.' )
+  console.log( obj )
+} )
+
 window.viewerScreenshot = function() {
   let data = v.interactions.screenshot() // transparent png.
 
@@ -32,3 +42,4 @@ window.viewerScreenshot = function() {
 window.zoomFast = function(){
   v.interactions.zoomExtents( 0.95, false )
 }
+

packages/viewer/src/modules/Converter.js

@@ -6,6 +6,7 @@ import { getConversionFactor } from './Units'
 
 /**
  * Utility class providing some top level conversion methods.
+ * Warning: HIC SVNT DRACONES.
  */
 export default class Coverter {
 
@@ -100,6 +101,7 @@ export default class Coverter {
 
   /**
    * Directly converts an object and invokes the callback with the the conversion result.
+   * If you don't know what you're doing, use traverseAndConvert() instead.
    * @param  {[type]} obj [description]
    * @param  {Function} callback [description]
    * @return {[type]}     [description]

packages/viewer/src/modules/InteractionHandler.js

@@ -36,6 +36,7 @@ export default class InteractionHandler {
     if ( !objs || objs.length === 0 ) this.zoomExtents()
     else this.zoomToObject( objs[0].object )
     this.viewer.needsRender = true
+    this.viewer.emit( 'object-doubleclicked', objs[0].object )
   }
 
   _handleSelect( objs ) {
@@ -66,11 +67,13 @@ export default class InteractionHandler {
     box.material = this.selectionEdgesMaterial
     this.selectedObjects.add( box )
     this.viewer.needsRender = true
+    this.viewer.emit( 'select', this.selectedObjects.children.filter( o => o.type !== 'BoxHelper' ) )
   }
 
   deselectObjects() {
     this.selectedObjects.clear()
     this.viewer.needsRender = true
+    this.viewer.emit( 'select', this.selectedObjects.children.filter( o => o.type !== 'BoxHelper' ) )
   }
 
   toggleSectionBox() {