1019 lines
29 KiB
C#
1019 lines
29 KiB
C#
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#region License
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/*
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MIT License
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Copyright(c) 2019 Mattias Edlund
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#endregion
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#if UNITY_2017_3 || UNITY_2017_4 || UNITY_2018 || UNITY_2019
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#define UNITY_MESH_INDEXFORMAT_SUPPORT
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#endif
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using UnityEngine;
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namespace UnityMeshSimplifier
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{
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/// <summary>
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/// Contains methods for combining meshes.
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/// </summary>
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public static class MeshCombiner
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{
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#region Public Methods
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/// <summary>
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/// Combines an array of mesh renderers into one single mesh.
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/// </summary>
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/// <param name="rootTransform">The root transform to create the combine mesh based from, essentially the origin of the new mesh.</param>
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/// <param name="renderers">The array of mesh renderers to combine.</param>
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/// <param name="resultMaterials">The resulting materials for the combined mesh.</param>
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/// <returns>The combined mesh.</returns>
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public static Mesh CombineMeshes(Transform rootTransform, MeshRenderer[] renderers, out Material[] resultMaterials, Dictionary<Transform, Transform> topLevelParents = null, Dictionary<string, BlendShapeFrame> blendShapes = null)
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{
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bool hasUnknownRootTransform = false;
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if (rootTransform == null)
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hasUnknownRootTransform = true;
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//throw new System.ArgumentNullException(nameof(rootTransform));
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if (renderers == null)
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throw new System.ArgumentNullException(nameof(renderers));
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var meshes = new Mesh[renderers.Length];
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var transforms = new Matrix4x4[renderers.Length];
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Tuple<Matrix4x4, bool>[] normalsTransforms = new Tuple<Matrix4x4, bool>[renderers.Length];
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var materials = new Material[renderers.Length][];
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for (int i = 0; i < renderers.Length; i++)
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{
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var renderer = renderers[i];
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if (renderer == null)
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throw new System.ArgumentException(string.Format("The renderer at index {0} is null.", i), nameof(renderers));
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var rendererTransform = renderer.transform;
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var meshFilter = renderer.GetComponent<MeshFilter>();
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if (meshFilter == null)
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throw new System.ArgumentException(string.Format("The renderer at index {0} has no mesh filter.", i), nameof(renderers));
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else if (meshFilter.sharedMesh == null)
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throw new System.ArgumentException(string.Format("The mesh filter for renderer at index {0} has no mesh.", i), nameof(renderers));
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else if (!meshFilter.sharedMesh.isReadable)
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throw new System.ArgumentException(string.Format("The mesh in the mesh filter for renderer at index {0} is not readable.", i), nameof(renderers));
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meshes[i] = meshFilter.sharedMesh;
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if(hasUnknownRootTransform)
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{
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rootTransform = topLevelParents[rendererTransform];
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}
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transforms[i] = rootTransform.worldToLocalMatrix * rendererTransform.localToWorldMatrix;
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Vector3 lossyScale = rendererTransform.transform.lossyScale;
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bool isUniformScale = Mathf.Approximately(lossyScale.x, lossyScale.y) && Mathf.Approximately(lossyScale.y, lossyScale.z);
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if (!isUniformScale)
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{
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Debug.LogWarning($"The GameObject \"{rendererTransform.name}\" has non uniform scaling applied. This will cause the combined mesh normals to be incorrectly calculated resulting in slight variation in lighting.");
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}
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normalsTransforms[i] = Tuple.Create(rootTransform.localToWorldMatrix * rendererTransform.localToWorldMatrix, !isUniformScale);
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materials[i] = renderer.sharedMaterials;
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}
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return CombineMeshes(meshes, transforms, normalsTransforms, materials, out resultMaterials, blendShapes);
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}
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/// <summary>
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/// Combines an array of skinned mesh renderers into one single skinned mesh.
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/// </summary>
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/// <param name="rootTransform">The root transform to create the combine mesh based from, essentially the origin of the new mesh.</param>
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/// <param name="renderers">The array of skinned mesh renderers to combine.</param>
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/// <param name="resultMaterials">The resulting materials for the combined mesh.</param>
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/// <param name="resultBones">The resulting bones for the combined mesh.</param>
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/// <returns>The combined mesh.</returns>
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public static Mesh CombineMeshes(Transform rootTransform, SkinnedMeshRenderer[] renderers, out Material[] resultMaterials, out Transform[] resultBones)
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{
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//if (rootTransform == null)
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//throw new System.ArgumentNullException(nameof(rootTransform));
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if (renderers == null)
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throw new System.ArgumentNullException(nameof(renderers));
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var meshes = new Mesh[renderers.Length];
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var transforms = new Matrix4x4[renderers.Length];
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Tuple<Matrix4x4, bool>[] normalsTransforms = new Tuple<Matrix4x4, bool>[renderers.Length];
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var materials = new Material[renderers.Length][];
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var bones = new Transform[renderers.Length][];
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Dictionary<string, BlendShapeFrame> blendShapes = new Dictionary<string, BlendShapeFrame>();
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int vertexOffset = 0;
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for (int i = 0; i < renderers.Length; i++)
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{
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var renderer = renderers[i];
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if (renderer == null)
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throw new System.ArgumentException(string.Format("The renderer at index {0} is null.", i), nameof(renderers));
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else if (renderer.sharedMesh == null)
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throw new System.ArgumentException(string.Format("The renderer at index {0} has no mesh.", i), nameof(renderers));
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else if (!renderer.sharedMesh.isReadable)
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throw new System.ArgumentException(string.Format("The mesh in the renderer at index {0} is not readable.", i), nameof(renderers));
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var rendererTransform = renderer.transform;
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meshes[i] = renderer.sharedMesh;
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// IF NO BONES
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//transforms[i] = rootTransform.worldToLocalMatrix * rendererTransform.localToWorldMatrix;
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//transforms[i] = rendererTransform.worldToLocalMatrix * rendererTransform.localToWorldMatrix;
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// IF ANY BONES
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// baw did
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if (renderer.bones == null || renderer.bones.Length == 0)
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{
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transforms[i] = rootTransform.worldToLocalMatrix * rendererTransform.localToWorldMatrix;
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}
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else
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{
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transforms[i] = rendererTransform.worldToLocalMatrix * rendererTransform.localToWorldMatrix;
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}
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Vector3 lossyScale = rendererTransform.transform.lossyScale;
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bool isUniformScale = Mathf.Approximately(lossyScale.x, lossyScale.y) && Mathf.Approximately(lossyScale.y, lossyScale.z);
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if (!isUniformScale)
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{
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Debug.LogWarning($"The GameObject \"{rendererTransform.name}\" has non uniform scaling applied. This will cause the combined mesh normals to be incorrectly calculated resulting in slight variation in lighting.");
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}
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normalsTransforms[i] = Tuple.Create(rendererTransform.worldToLocalMatrix * rendererTransform.localToWorldMatrix, !isUniformScale);
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materials[i] = renderer.sharedMaterials;
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bones[i] = renderer.bones;
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for (int a = 0; a < bones[i].Length; a++)
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{
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Transform t = bones[i][a];
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MeshFilter mf = t == null ? null : t.GetComponent<MeshFilter>();
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Mesh m = mf == null ? null : mf.sharedMesh;
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if(m != null)
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{
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Debug.LogWarning($"You have a static mesh attached to the bone:\"{t.name}\". The mesh combination logic will not deal with this properly, since that would require it to modify the original game object hierarchy. You might get erroneous results on mesh combination.");
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}
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}
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Mesh mesh = renderer.sharedMesh;
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if (mesh.blendShapeCount > 0)
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{
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for (int s = 0; s < mesh.blendShapeCount; s++)
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{
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for (int f = 0; f < mesh.GetBlendShapeFrameCount(s); f++)
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{
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Vector3[] deltaVertices = new Vector3[mesh.vertexCount];
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Vector3[] deltaNormals = new Vector3[mesh.vertexCount];
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Vector3[] deltaTangents = new Vector3[mesh.vertexCount];
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int rendererId = renderer.GetHashCode();
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if (!blendShapes.ContainsKey(mesh.GetBlendShapeName(s) + rendererId))
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{
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mesh.GetBlendShapeFrameVertices(s, f, deltaVertices, deltaNormals, deltaTangents);
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blendShapes.Add(mesh.GetBlendShapeName(s) + rendererId, new BlendShapeFrame(mesh.GetBlendShapeName(s) + rendererId, mesh.GetBlendShapeFrameWeight(s, f), deltaVertices, deltaNormals, deltaTangents, vertexOffset));
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}
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}
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}
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}
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vertexOffset += mesh.vertexCount;
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}
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return CombineMeshes(meshes, transforms, normalsTransforms, materials, bones, out resultMaterials, out resultBones, blendShapes);
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}
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/// <summary>
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/// Combines an array of meshes into a single mesh.
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/// </summary>
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/// <param name="meshes">The array of meshes to combine.</param>
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/// <param name="transforms">The array of transforms for the meshes.</param>
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/// <param name="materials">The array of materials for each mesh to combine.</param>
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/// <param name="resultMaterials">The resulting materials for the combined mesh.</param>
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/// <returns>The combined mesh.</returns>
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public static Mesh CombineMeshes(Mesh[] meshes, Matrix4x4[] transforms, Tuple<Matrix4x4, bool>[] normalsTransforms, Material[][] materials, out Material[] resultMaterials, Dictionary<string, BlendShapeFrame> blendShapes = null)
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{
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if (meshes == null)
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throw new System.ArgumentNullException(nameof(meshes));
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else if (transforms == null)
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throw new System.ArgumentNullException(nameof(transforms));
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else if (materials == null)
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throw new System.ArgumentNullException(nameof(materials));
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Transform[] resultBones;
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return CombineMeshes(meshes, transforms, normalsTransforms, materials, null, out resultMaterials, out resultBones, blendShapes);
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}
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/// <summary>
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|||
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/// Combines an array of meshes into a single mesh.
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|||
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/// </summary>
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|||
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/// <param name="meshes">The array of meshes to combine.</param>
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/// <param name="transforms">The array of transforms for the meshes.</param>
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/// <param name="materials">The array of materials for each mesh to combine.</param>
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/// <param name="bones">The array of bones for each mesh to combine.</param>
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/// <param name="resultMaterials">The resulting materials for the combined mesh.</param>
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/// <param name="resultBones">The resulting bones for the combined mesh.</param>
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/// <returns>The combined mesh.</returns>
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|||
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public static Mesh CombineMeshes(Mesh[] meshes, Matrix4x4[] transforms, Tuple<Matrix4x4, bool>[] normalsTransforms, Material[][] materials, Transform[][] bones, out Material[] resultMaterials, out Transform[] resultBones, Dictionary<string, BlendShapeFrame> blendShapes = null)
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|||
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{
|
|||
|
|
|
|||
|
|
if (meshes == null)
|
|||
|
|
|
|||
|
|
throw new System.ArgumentNullException(nameof(meshes));
|
|||
|
|
|
|||
|
|
else if (transforms == null)
|
|||
|
|
|
|||
|
|
throw new System.ArgumentNullException(nameof(transforms));
|
|||
|
|
|
|||
|
|
else if (materials == null)
|
|||
|
|
|
|||
|
|
throw new System.ArgumentNullException(nameof(materials));
|
|||
|
|
|
|||
|
|
else if (transforms.Length != meshes.Length)
|
|||
|
|
|
|||
|
|
throw new System.ArgumentException("The array of transforms doesn't have the same length as the array of meshes.", nameof(transforms));
|
|||
|
|
|
|||
|
|
else if (materials.Length != meshes.Length)
|
|||
|
|
|
|||
|
|
throw new System.ArgumentException("The array of materials doesn't have the same length as the array of meshes.", nameof(materials));
|
|||
|
|
|
|||
|
|
else if (bones != null && bones.Length != meshes.Length)
|
|||
|
|
|
|||
|
|
throw new System.ArgumentException("The array of bones doesn't have the same length as the array of meshes.", nameof(bones));
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
int totalVertexCount = 0;
|
|||
|
|
|
|||
|
|
int totalSubMeshCount = 0;
|
|||
|
|
|
|||
|
|
for (int meshIndex = 0; meshIndex < meshes.Length; meshIndex++)
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
var mesh = meshes[meshIndex];
|
|||
|
|
|
|||
|
|
if (mesh == null)
|
|||
|
|
|
|||
|
|
throw new System.ArgumentException(string.Format("The mesh at index {0} is null.", meshIndex), nameof(meshes));
|
|||
|
|
|
|||
|
|
else if (!mesh.isReadable)
|
|||
|
|
|
|||
|
|
throw new System.ArgumentException(string.Format("The mesh at index {0} is not readable.", meshIndex), nameof(meshes));
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
totalVertexCount += mesh.vertexCount;
|
|||
|
|
|
|||
|
|
totalSubMeshCount += mesh.subMeshCount;
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
// Validate the mesh materials
|
|||
|
|
|
|||
|
|
var meshMaterials = materials[meshIndex];
|
|||
|
|
|
|||
|
|
if (meshMaterials == null)
|
|||
|
|
|
|||
|
|
throw new System.ArgumentException(string.Format("The materials for mesh at index {0} is null.", meshIndex), nameof(materials));
|
|||
|
|
|
|||
|
|
else if (meshMaterials.Length != mesh.subMeshCount)
|
|||
|
|
|
|||
|
|
throw new System.ArgumentException(string.Format("The materials for mesh at index {0} doesn't match the submesh count ({1} != {2}).", meshIndex, meshMaterials.Length, mesh.subMeshCount), nameof(materials));
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
for (int materialIndex = 0; materialIndex < meshMaterials.Length; materialIndex++)
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
if (meshMaterials[materialIndex] == null)
|
|||
|
|
|
|||
|
|
throw new System.ArgumentException(string.Format("The material at index {0} for mesh at index {1} is null.", materialIndex, meshIndex), nameof(materials));
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
// Validate the mesh bones
|
|||
|
|
|
|||
|
|
if (bones != null)
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
var meshBones = bones[meshIndex];
|
|||
|
|
|
|||
|
|
if (meshBones == null)
|
|||
|
|
|
|||
|
|
throw new System.ArgumentException(string.Format("The bones for mesh at index {0} is null.", meshIndex), nameof(meshBones));
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
for (int boneIndex = 0; boneIndex < meshBones.Length; boneIndex++)
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
if (meshBones[boneIndex] == null)
|
|||
|
|
|
|||
|
|
throw new System.ArgumentException(string.Format("The bone at index {0} for mesh at index {1} is null.", boneIndex, meshIndex), nameof(meshBones));
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
var combinedVertices = new List<Vector3>(totalVertexCount);
|
|||
|
|
|
|||
|
|
var combinedIndices = new List<int[]>(totalSubMeshCount);
|
|||
|
|
|
|||
|
|
List<Vector3> combinedNormals = null;
|
|||
|
|
|
|||
|
|
List<Vector4> combinedTangents = null;
|
|||
|
|
|
|||
|
|
List<Color> combinedColors = null;
|
|||
|
|
|
|||
|
|
List<BoneWeight> combinedBoneWeights = null;
|
|||
|
|
|
|||
|
|
var combinedUVs = new List<Vector4>[MeshUtils.UVChannelCount];
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
List<Matrix4x4> usedBindposes = null;
|
|||
|
|
|
|||
|
|
List<Transform> usedBones = null;
|
|||
|
|
|
|||
|
|
var usedMaterials = new List<Material>(totalSubMeshCount);
|
|||
|
|
|
|||
|
|
var materialMap = new Dictionary<Material, int>(totalSubMeshCount);
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
int currentVertexCount = 0;
|
|||
|
|
|
|||
|
|
for (int meshIndex = 0; meshIndex < meshes.Length; meshIndex++)
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
var mesh = meshes[meshIndex];
|
|||
|
|
|
|||
|
|
var meshTransform = transforms[meshIndex];
|
|||
|
|
|
|||
|
|
var normalsTransform = normalsTransforms[meshIndex];
|
|||
|
|
|
|||
|
|
var meshMaterials = materials[meshIndex];
|
|||
|
|
|
|||
|
|
var meshBones = (bones != null ? bones[meshIndex] : null);
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
int subMeshCount = mesh.subMeshCount;
|
|||
|
|
|
|||
|
|
int meshVertexCount = mesh.vertexCount;
|
|||
|
|
|
|||
|
|
var meshVertices = mesh.vertices;
|
|||
|
|
|
|||
|
|
var meshNormals = mesh.normals;
|
|||
|
|
|
|||
|
|
var meshTangents = mesh.tangents;
|
|||
|
|
|
|||
|
|
var meshUVs = MeshUtils.GetMeshUVs(mesh);
|
|||
|
|
|
|||
|
|
var meshColors = mesh.colors;
|
|||
|
|
|
|||
|
|
var meshBoneWeights = mesh.boneWeights;
|
|||
|
|
|
|||
|
|
var meshBindposes = mesh.bindposes;
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
// Transform vertices with bones to keep only one bindpose
|
|||
|
|
|
|||
|
|
if (meshBones != null && meshBoneWeights != null && meshBoneWeights.Length > 0 && meshBindposes != null && meshBindposes.Length > 0 && meshBones.Length == meshBindposes.Length)
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
if (usedBindposes == null)
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
usedBindposes = new List<Matrix4x4>(meshBindposes);
|
|||
|
|
|
|||
|
|
usedBones = new List<Transform>(meshBones);
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
int[] boneIndices = new int[meshBones.Length];
|
|||
|
|
|
|||
|
|
for (int i = 0; i < meshBones.Length; i++)
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
int usedBoneIndex = usedBones.IndexOf(meshBones[i]);
|
|||
|
|
|
|||
|
|
if (usedBoneIndex == -1 || meshBindposes[i] != usedBindposes[usedBoneIndex])
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
usedBoneIndex = usedBones.Count;
|
|||
|
|
|
|||
|
|
usedBones.Add(meshBones[i]);
|
|||
|
|
|
|||
|
|
usedBindposes.Add(meshBindposes[i]);
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
boneIndices[i] = usedBoneIndex;
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
// Then we remap the bones
|
|||
|
|
|
|||
|
|
RemapBones(meshBoneWeights, boneIndices);
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
// Transforms the vertices, normals and tangents using the mesh transform
|
|||
|
|
|
|||
|
|
TransformVertices(meshVertices, ref meshTransform);
|
|||
|
|
|
|||
|
|
TransformNormals(meshNormals, ref normalsTransform);
|
|||
|
|
|
|||
|
|
TransformTangents(meshTangents, ref normalsTransform);
|
|||
|
|
|
|||
|
|
|
|||
|
|
// Copy vertex positions & attributes
|
|||
|
|
|
|||
|
|
CopyVertexPositions(combinedVertices, meshVertices);
|
|||
|
|
|
|||
|
|
CopyVertexAttributes(ref combinedNormals, meshNormals, currentVertexCount, meshVertexCount, totalVertexCount, new Vector3(1f, 0f, 0f));
|
|||
|
|
|
|||
|
|
CopyVertexAttributes(ref combinedTangents, meshTangents, currentVertexCount, meshVertexCount, totalVertexCount, new Vector4(0f, 0f, 1f, 1f));
|
|||
|
|
|
|||
|
|
CopyVertexAttributes(ref combinedColors, meshColors, currentVertexCount, meshVertexCount, totalVertexCount, new Color(1f, 1f, 1f, 1f));
|
|||
|
|
|
|||
|
|
CopyVertexAttributes(ref combinedBoneWeights, meshBoneWeights, currentVertexCount, meshVertexCount, totalVertexCount, new BoneWeight());
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
for (int channel = 0; channel < meshUVs.Length; channel++)
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
CopyVertexAttributes(ref combinedUVs[channel], meshUVs[channel], currentVertexCount, meshVertexCount, totalVertexCount, new Vector4(0f, 0f, 0f, 0f));
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
for (int subMeshIndex = 0; subMeshIndex < subMeshCount; subMeshIndex++)
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
var subMeshMaterial = meshMaterials[subMeshIndex];
|
|||
|
|
|
|||
|
|
#if UNITY_MESH_INDEXFORMAT_SUPPORT
|
|||
|
|
|
|||
|
|
var subMeshIndices = mesh.GetTriangles(subMeshIndex, true);
|
|||
|
|
|
|||
|
|
#else
|
|||
|
|
|
|||
|
|
var subMeshIndices = mesh.GetTriangles(subMeshIndex);
|
|||
|
|
|
|||
|
|
#endif
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
if (currentVertexCount > 0)
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
for (int index = 0; index < subMeshIndices.Length; index++)
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
subMeshIndices[index] += currentVertexCount;
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
int existingSubMeshIndex;
|
|||
|
|
|
|||
|
|
if (materialMap.TryGetValue(subMeshMaterial, out existingSubMeshIndex))
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
combinedIndices[existingSubMeshIndex] = MergeArrays(combinedIndices[existingSubMeshIndex], subMeshIndices);
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
else
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
int materialIndex = combinedIndices.Count;
|
|||
|
|
|
|||
|
|
materialMap.Add(subMeshMaterial, materialIndex);
|
|||
|
|
|
|||
|
|
usedMaterials.Add(subMeshMaterial);
|
|||
|
|
|
|||
|
|
combinedIndices.Add(subMeshIndices);
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
currentVertexCount += meshVertexCount;
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
var resultVertices = combinedVertices.ToArray();
|
|||
|
|
|
|||
|
|
var resultIndices = combinedIndices.ToArray();
|
|||
|
|
|
|||
|
|
var resultNormals = (combinedNormals != null ? combinedNormals.ToArray() : null);
|
|||
|
|
|
|||
|
|
var resultTangents = (combinedTangents != null ? combinedTangents.ToArray() : null);
|
|||
|
|
|
|||
|
|
var resultColors = (combinedColors != null ? combinedColors.ToArray() : null);
|
|||
|
|
|
|||
|
|
var resultBoneWeights = (combinedBoneWeights != null ? combinedBoneWeights.ToArray() : null);
|
|||
|
|
|
|||
|
|
var resultUVs = combinedUVs.ToArray();
|
|||
|
|
|
|||
|
|
var resultBindposes = (usedBindposes != null ? usedBindposes.ToArray() : null);
|
|||
|
|
|
|||
|
|
resultMaterials = usedMaterials.ToArray();
|
|||
|
|
|
|||
|
|
resultBones = (usedBones != null ? usedBones.ToArray() : null);
|
|||
|
|
|
|||
|
|
Mesh combinedMesh = MeshUtils.CreateMesh(resultVertices, resultIndices, resultNormals, resultTangents, resultColors, resultBoneWeights, resultUVs, resultBindposes, null);
|
|||
|
|
|
|||
|
|
if(blendShapes != null && blendShapes.Count > 0)
|
|||
|
|
{
|
|||
|
|
foreach (BlendShapeFrame blendShape in blendShapes.Values)
|
|||
|
|
{
|
|||
|
|
Vector3[] deltaVertices = new Vector3[combinedMesh.vertexCount];
|
|||
|
|
Vector3[] deltaNormals = new Vector3[combinedMesh.vertexCount];
|
|||
|
|
Vector3[] deltaTangents = new Vector3[combinedMesh.vertexCount];
|
|||
|
|
|
|||
|
|
for (int p = 0; p < blendShape.deltaVertices.Length; p++)
|
|||
|
|
{
|
|||
|
|
deltaVertices.SetValue(blendShape.deltaVertices[p], p + blendShape.vertexOffset);
|
|||
|
|
deltaNormals.SetValue(blendShape.deltaNormals[p], p + blendShape.vertexOffset);
|
|||
|
|
deltaTangents.SetValue(blendShape.deltaTangents[p], p + blendShape.vertexOffset);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
combinedMesh.AddBlendShapeFrame(blendShape.shapeName, blendShape.frameWeight, deltaVertices, deltaNormals, deltaTangents);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
return combinedMesh;
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
#endregion
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
#region Private Methods
|
|||
|
|
|
|||
|
|
|
|||
|
|
private static Transform GetTopLevelParent(Transform forObject)
|
|||
|
|
{
|
|||
|
|
Transform topLevelParent = forObject;
|
|||
|
|
|
|||
|
|
while (topLevelParent.parent != null) { topLevelParent = topLevelParent.parent; }
|
|||
|
|
|
|||
|
|
return topLevelParent;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
private static void CopyVertexPositions(List<Vector3> list, Vector3[] arr)
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
if (arr == null || arr.Length == 0)
|
|||
|
|
|
|||
|
|
return;
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
for (int i = 0; i < arr.Length; i++)
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
list.Add(arr[i]);
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
private static void CopyVertexAttributes<T>(ref List<T> dest, IEnumerable<T> src, int previousVertexCount, int meshVertexCount, int totalVertexCount, T defaultValue)
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
if (src == null || src.Count() == 0)
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
if (dest != null)
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
for (int i = 0; i < meshVertexCount; i++)
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
dest.Add(defaultValue);
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return;
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
if (dest == null)
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
dest = new List<T>(totalVertexCount);
|
|||
|
|
|
|||
|
|
for (int i = 0; i < previousVertexCount; i++)
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
dest.Add(defaultValue);
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
dest.AddRange(src);
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
private static T[] MergeArrays<T>(T[] arr1, T[] arr2)
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
var newArr = new T[arr1.Length + arr2.Length];
|
|||
|
|
|
|||
|
|
System.Array.Copy(arr1, 0, newArr, 0, arr1.Length);
|
|||
|
|
|
|||
|
|
System.Array.Copy(arr2, 0, newArr, arr1.Length, arr2.Length);
|
|||
|
|
|
|||
|
|
return newArr;
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
private static void TransformVertices(Vector3[] vertices, ref Matrix4x4 transform)
|
|||
|
|
{
|
|||
|
|
for (int i = 0; i < vertices.Length; i++)
|
|||
|
|
{
|
|||
|
|
vertices[i] = transform.MultiplyPoint3x4(vertices[i]);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
private static void TransformNormals(Vector3[] normals, ref Tuple<Matrix4x4, bool> transform)
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
if (normals == null)
|
|||
|
|
return;
|
|||
|
|
|
|||
|
|
for (int i = 0; i < normals.Length; i++)
|
|||
|
|
{
|
|||
|
|
// Non-UniformScaling
|
|||
|
|
if (transform.Item2 == true)
|
|||
|
|
{
|
|||
|
|
Quaternion rotation = Quaternion.LookRotation(transform.Item1.GetColumn(2), transform.Item1.GetColumn(1));
|
|||
|
|
normals[i] = rotation * normals[i]; //baw did
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
normals[i] = transform.Item1.MultiplyVector(normals[i]);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
private static void TransformTangents(Vector4[] tangents, ref Tuple<Matrix4x4, bool> transform)
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
if (tangents == null)
|
|||
|
|
|
|||
|
|
return;
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
Vector3 tengentDir;
|
|||
|
|
|
|||
|
|
for (int i = 0; i < tangents.Length; i++)
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
tengentDir = transform.Item1.MultiplyVector(new Vector3(tangents[i].x, tangents[i].y, tangents[i].z));
|
|||
|
|
|
|||
|
|
tangents[i] = new Vector4(tengentDir.x, tengentDir.y, tengentDir.z, tangents[i].w);
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
private static void RemapBones(BoneWeight[] boneWeights, int[] boneIndices)
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
for (int i = 0; i < boneWeights.Length; i++)
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
if (boneWeights[i].weight0 > 0)
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
boneWeights[i].boneIndex0 = boneIndices[boneWeights[i].boneIndex0];
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if (boneWeights[i].weight1 > 0)
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
boneWeights[i].boneIndex1 = boneIndices[boneWeights[i].boneIndex1];
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if (boneWeights[i].weight2 > 0)
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
boneWeights[i].boneIndex2 = boneIndices[boneWeights[i].boneIndex2];
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if (boneWeights[i].weight3 > 0)
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
boneWeights[i].boneIndex3 = boneIndices[boneWeights[i].boneIndex3];
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
private static Matrix4x4 ScaleMatrix(ref Matrix4x4 matrix, float scale)
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
return new Matrix4x4()
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
m00 = matrix.m00 * scale,
|
|||
|
|
|
|||
|
|
m01 = matrix.m01 * scale,
|
|||
|
|
|
|||
|
|
m02 = matrix.m02 * scale,
|
|||
|
|
|
|||
|
|
m03 = matrix.m03 * scale,
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
m10 = matrix.m10 * scale,
|
|||
|
|
|
|||
|
|
m11 = matrix.m11 * scale,
|
|||
|
|
|
|||
|
|
m12 = matrix.m12 * scale,
|
|||
|
|
|
|||
|
|
m13 = matrix.m13 * scale,
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
m20 = matrix.m20 * scale,
|
|||
|
|
|
|||
|
|
m21 = matrix.m21 * scale,
|
|||
|
|
|
|||
|
|
m22 = matrix.m22 * scale,
|
|||
|
|
|
|||
|
|
m23 = matrix.m23 * scale,
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
m30 = matrix.m30 * scale,
|
|||
|
|
|
|||
|
|
m31 = matrix.m31 * scale,
|
|||
|
|
|
|||
|
|
m32 = matrix.m32 * scale,
|
|||
|
|
|
|||
|
|
m33 = matrix.m33 * scale
|
|||
|
|
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
#endregion
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|