Jedd Morgan
358 lines
12 KiB
C#
358 lines
12 KiB
C#
using System;
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using Objects.Geometry;
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using System.Collections.Generic;
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using System.Linq;
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using System.Reflection;
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using Objects.Other;
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using Speckle.ConnectorUnity.NativeCache;
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using Speckle.ConnectorUnity.Utils;
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using Speckle.ConnectorUnity.Wrappers;
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using Speckle.Core.Logging;
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using Speckle.Core.Models;
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using Speckle.Core.Models.GraphTraversal;
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using UnityEditor;
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using UnityEngine;
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using Mesh = UnityEngine.Mesh;
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using Object = UnityEngine.Object;
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using SMesh = Objects.Geometry.Mesh;
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using Transform = UnityEngine.Transform;
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using STransform = Objects.Other.Transform;
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#nullable enable
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namespace Objects.Converter.Unity
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{
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public partial class ConverterUnity
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{
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#region helper methods
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/// <summary>
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/// Converts a 3D vector from Speckle's RH Z-up to Unity's LH Y-up coordinate system
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/// </summary>
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/// <returns>Scaled Vector in Unity coordinate space</returns>
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public Vector3 VectorByCoordinates(double x, double y, double z, double scaleFactor = 1d)
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{
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// switch y and z //TODO is this correct? LH -> RH
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return new Vector3((float) (x * scaleFactor), (float) (z * scaleFactor), (float) (y * scaleFactor));
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}
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public Vector3 VectorByCoordinates(double x, double y, double z, string units)
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{
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var f = Speckle.Core.Kits.Units.GetConversionFactor(units, ModelUnits);
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return VectorByCoordinates(x, y, z, f);
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}
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public Vector3 VectorFromPoint(Point p) => VectorByCoordinates(p.x, p.y, p.z, p.units);
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/// <summary>
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///
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/// </summary>
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/// <param name="arr"></param>
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/// <returns></returns>
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public Vector3[] ArrayToPoints(IList<double> arr, string units)
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{
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if (arr.Count % 3 != 0) throw new Exception("Array malformed: length%3 != 0.");
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Vector3[] points = new Vector3[arr.Count / 3];
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var f = Speckle.Core.Kits.Units.GetConversionFactor(units, ModelUnits);
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for (int i = 2, k = 0; i < arr.Count; i += 3)
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points[k++] = VectorByCoordinates(arr[i - 2], arr[i - 1], arr[i], f);
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return points;
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}
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#endregion
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#region ToSpeckle
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//TODO: more of these
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/// <summary>
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///
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/// </summary>
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/// <param name="obj"></param>
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/// <returns></returns>
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public virtual Point PointToSpeckle(Vector3 p)
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{
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//switch y and z
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return new Point(p.x, p.z, p.y);
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}
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#endregion
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#region ToNative
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protected GameObject? NewPointBasedGameObject(Vector3[] points, string name)
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{
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if (points.Length == 0) return null;
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float pointDiameter = 1; //TODO: figure out how best to change this?
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var go = new GameObject();
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go.name = name;
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var lineRenderer = go.AddComponent<LineRenderer>();
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lineRenderer.positionCount = points.Length;
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lineRenderer.SetPositions(points);
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lineRenderer.numCornerVertices = lineRenderer.numCapVertices = 8;
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lineRenderer.startWidth = lineRenderer.endWidth = pointDiameter;
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return go;
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}
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/// <summary>
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/// Converts a Speckle <paramref name="point"/> to a <see cref="GameObject"/> with a <see cref="LineRenderer"/>
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/// </summary>
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/// <param name="point"></param>
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/// <returns></returns>
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public GameObject? PointToNative(Point point)
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{
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Vector3 newPt = VectorByCoordinates(point.x, point.y, point.z, point.units);
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var go = NewPointBasedGameObject(new Vector3[] {newPt, newPt}, point.speckle_type);
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return go;
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}
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/// <summary>
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/// Converts a Speckle <paramref name="line"/> to a <see cref="GameObject"/> with a <see cref="LineRenderer"/>
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/// </summary>
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/// <param name="line"></param>
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/// <returns></returns>
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public GameObject? LineToNative(Line line)
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{
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var points = new List<Vector3> {VectorFromPoint(line.start), VectorFromPoint(line.end)};
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var go = NewPointBasedGameObject(points.ToArray(), line.speckle_type);
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return go;
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}
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/// <summary>
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/// Converts a Speckle <paramref name="polyline"/> to a <see cref="GameObject"/> with a <see cref="LineRenderer"/>
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/// </summary>
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/// <param name="polyline"></param>
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/// <returns></returns>
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public GameObject? PolylineToNative(Polyline polyline)
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{
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var points = polyline.GetPoints().Select(VectorFromPoint);
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var go = NewPointBasedGameObject(points.ToArray(), polyline.speckle_type);
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return go;
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}
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/// <summary>
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/// Converts a Speckle <paramref name="curve"/> to a <see cref="GameObject"/> with a <see cref="LineRenderer"/>
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/// </summary>
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/// <param name="curve"></param>
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/// <returns></returns>
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public GameObject? CurveToNative(Curve curve)
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{
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var points = ArrayToPoints(curve.points, curve.units);
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var go = NewPointBasedGameObject(points, curve.speckle_type);
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return go;
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}
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public Dictionary<string, object?> GetProperties(Base o) => GetProperties(o, typeof(Base));
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public Dictionary<string, object?> GetProperties(Base o, Type excludeType)
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{
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var excludeProps = new HashSet<string>(excludeType
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.GetProperties(BindingFlags.Instance | BindingFlags.Public)
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.Select(x => x.Name));
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foreach (string alias in DisplayValuePropertyAliases)
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{
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excludeProps.Add(alias);
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}
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excludeProps.Add("renderMaterial");
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excludeProps.Add("elements");
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excludeProps.Add("name");
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//excludeProps.Add("tag");
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excludeProps.Add("physicsLayer");
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return o.GetMembers()
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.Where(x => !(excludeProps.Contains(x.Key) || excludeProps.Contains(x.Key.TrimStart('@'))))
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.ToDictionary(x => x.Key, x => (object?) x.Value);
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}
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#endregion
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private Base CreateSpeckleObjectFromProperties(GameObject go)
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{
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var sd = go.GetComponent<SpeckleProperties>();
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if (sd == null || sd.Data == null)
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return new Base();
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Base sobject = (Base) Activator.CreateInstance(sd.SpeckleType);
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foreach (var key in sd.Data.Keys)
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{
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try
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{
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sobject[key] = sd.Data[key];
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}
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catch (SpeckleException)
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{
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// Ignore SpeckleExceptions that may be caused by get only properties
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}
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}
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return sobject;
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}
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public GameObject? InstanceToNative(Instance instance)
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{
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if (instance.definition == null)
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{
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Debug.Log($"Skipping {typeof(BlockInstance)} {instance.id}, block definition was null");
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return null;
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}
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var defName = instance.definition["name"] as string ?? "";
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// Check for existing converted object
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if(LoadedAssets.TryGetObject(instance.definition, out GameObject? existingGo))
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{
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var go = InstantiateCopy(existingGo);
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go.name = defName;
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TransformToNativeTransform(go.transform, instance.transform);
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return go;
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}
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// Convert the block definition
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GameObject native = new GameObject(defName);
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List<SMesh> meshes = new();
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List<Base> others = new();
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var geometry = instance.definition is BlockDefinition b
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? b.geometry
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: GraphTraversal.TraverseMember(instance.definition["elements"]);
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foreach (Base geo in geometry)
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{
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if (geo is SMesh m) meshes.Add(m);
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else if (geo is IDisplayValue<List<SMesh>> s) meshes.AddRange(s.displayValue);
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else others.Add(geo);
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}
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if (meshes.Any())
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{
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if(!TryGetMeshFromCache(instance.definition, meshes, out Mesh? nativeMesh, out _))
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{
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MeshToNativeMesh(meshes, out nativeMesh);
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string name = AssetHelpers.GenerateObjectName(instance.definition);
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nativeMesh.name = name;
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LoadedAssets.TrySaveObject(instance.definition, nativeMesh);
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}
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var nativeMaterials = RenderMaterialsToNative(meshes);
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native.SafeMeshSet(nativeMesh, nativeMaterials);
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}
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foreach (Base child in others)
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{
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GameObject? c = ConvertToNativeGameObject(child);
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if (c == null) continue;
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c.transform.SetParent(native.transform, false);
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}
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LoadedAssets.TrySaveObject(instance.definition, native);
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TransformToNativeTransform(native.transform, instance.transform);
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if (instance["name"] is string instanceName) native.name = instanceName;
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return native;
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}
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private static GameObject InstantiateCopy(GameObject existingGo)
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{
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#if UNITY_EDITOR
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GameObject? prefabInstance = null;
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bool isPrefab = PrefabUtility.GetPrefabAssetType(existingGo) != PrefabAssetType.NotAPrefab;
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if (isPrefab)
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{
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GameObject? prefabAsset = PrefabUtility.GetCorrespondingObjectFromSource(existingGo);
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if (prefabAsset == null) prefabAsset = existingGo;
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prefabInstance = (GameObject) PrefabUtility.InstantiatePrefab(prefabAsset);
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}
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if (prefabInstance != null)
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return prefabInstance;
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#endif
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return Object.Instantiate(existingGo);
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}
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/// <summary>
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/// Converts a 4x4 transformation matrix from Speckle's <see cref="Other.Transform"/> format,
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/// to a Unity <see cref="Matrix4x4"/>. Applying Z -> Y up conversion, and applying units to the translation
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/// </summary>
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/// <param name="speckleTransform"></param>
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/// <returns>Transformation matrix in Unity's coordinate system</returns>
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public Matrix4x4 TransformToNativeMatrix(STransform speckleTransform)
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{
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var sf = Speckle.Core.Kits.Units.GetConversionFactor(speckleTransform.units, ModelUnits);
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var smatrix = speckleTransform.matrix;
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return new Matrix4x4
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{
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// Left (X -> X)
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[0, 0] = smatrix.M11,
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[2, 0] = smatrix.M21,
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[1, 0] = smatrix.M31,
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[3, 0] = smatrix.M41,
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//Up (Z -> Y)
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[0, 2] = smatrix.M12,
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[2, 2] = smatrix.M22,
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[1, 2] = smatrix.M32,
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[3, 2] = smatrix.M42,
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//Forwards (Y -> Z)
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[0, 1] = smatrix.M13,
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[2, 1] = smatrix.M23,
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[1, 1] = smatrix.M33,
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[3, 1] = smatrix.M43,
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//Translation
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[0, 3] = (float) (smatrix.M14 * sf),
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[2, 3] = (float) (smatrix.M24 * sf),
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[1, 3] = (float) (smatrix.M34 * sf),
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[3, 3] = smatrix.M44,
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};
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}
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public void TransformToNativeTransform(Transform transform, STransform speckleTransform)
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{
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Matrix4x4 matrix = TransformToNativeMatrix(speckleTransform);
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ApplyMatrixToTransform(transform, matrix);
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}
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protected static void ApplyMatrixToTransform(Transform transform, Matrix4x4 m)
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{
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transform.localScale =
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m.lossyScale; //doesn't work for non TRS, maybe we could fallback to squareSum approach (see TransformVectorized::SetFromMatrix in UE src)
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//We can't use m.rotation, as it gives us incorrect results (perhaps because of RH -> LH? or maybe our MatrixToNative is broken?)
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transform.localRotation = Quaternion.LookRotation(
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m.GetColumn(2),
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m.GetColumn(1)
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);
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transform.localPosition = m.GetPosition();
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}
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}
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}
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