110 lines
4.7 KiB
C#
110 lines
4.7 KiB
C#
using System;
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using System.Collections.Generic;
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using UnityEngine;
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using MeshDecimator;
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public class MeshDecimatorUnityEngineAPI
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{
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public static MeshDecimator.Mesh Mesh2DecMesh(UnityEngine.Mesh mesh)
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{
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MeshDecimator.BoneWeight[] bones = new MeshDecimator.BoneWeight[mesh.vertexCount];
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MeshDecimator.Math.Vector3d[] vertices = Array.ConvertAll(mesh.vertices, item => (MeshDecimator.Math.Vector3d)item);
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MeshDecimator.Math.Vector2[] uv1 = Array.ConvertAll(mesh.uv, item => (MeshDecimator.Math.Vector2)item);
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MeshDecimator.Math.Vector2[] uv2 = Array.ConvertAll(mesh.uv2, item => (MeshDecimator.Math.Vector2)item);
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MeshDecimator.Math.Vector2[] uv3 = Array.ConvertAll(mesh.uv3, item => (MeshDecimator.Math.Vector2)item);
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MeshDecimator.Math.Vector2[] uv4 = Array.ConvertAll(mesh.uv4, item => (MeshDecimator.Math.Vector2)item);
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MeshDecimator.Math.Vector4[] colors = Array.ConvertAll(mesh.colors, item => new MeshDecimator.Math.Vector4(item.r, item.g, item.b, item.a));
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if (mesh.boneWeights.Length > 0)
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bones = Array.ConvertAll(mesh.boneWeights, item => (MeshDecimator.BoneWeight)item);
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MeshDecimator.Math.Vector3[] normals = Array.ConvertAll(mesh.normals, item => (MeshDecimator.Math.Vector3)item);
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int[][] indexes = new int[mesh.subMeshCount][];
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for (int i = 0; i < mesh.subMeshCount; ++i)
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{
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indexes[i] = mesh.GetIndices(i);
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}
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MeshDecimator.Mesh res = new MeshDecimator.Mesh(vertices, indexes);
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res.SetUVs(0, uv1);
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res.SetUVs(1, uv2);
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res.SetUVs(2, uv3);
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res.SetUVs(3, uv4);
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if(mesh.colors.Length == mesh.vertices.Length)
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res.Colors = colors;
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res.Normals = normals;
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res.BoneWeights = bones;
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return res;
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}
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public static UnityEngine.Mesh DecMesh2Mesh(MeshDecimator.Mesh mesh, bool hasBones)
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{
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UnityEngine.Mesh res = new UnityEngine.Mesh();
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if (mesh.VertexCount > 65535)
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res.indexFormat = UnityEngine.Rendering.IndexFormat.UInt32;
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res.subMeshCount = mesh.SubMeshCount;
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List<UnityEngine.Vector3> vertices = new List<UnityEngine.Vector3>();
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List<UnityEngine.Vector3> normals = new List<UnityEngine.Vector3>();
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List<UnityEngine.Vector2> uv1 = new List<UnityEngine.Vector2>();
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bool hasUV1 = mesh.UV1 != null;
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List<UnityEngine.Vector2> uv2 = new List<UnityEngine.Vector2>();
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bool hasUV2 = mesh.UV2 != null;
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List<UnityEngine.Vector2> uv3 = new List<UnityEngine.Vector2>();
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bool hasUV3 = mesh.UV3 != null;
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List<UnityEngine.Vector2> uv4 = new List<UnityEngine.Vector2>();
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bool hasUV4 = mesh.UV4 != null;
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List<UnityEngine.Color> colors = new List<UnityEngine.Color>();
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bool hasColors = mesh.Colors != null;
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UnityEngine.BoneWeight[] bones = new UnityEngine.BoneWeight[mesh.VertexCount];
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for (int i = 0; i < mesh.VertexCount; ++i)
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{
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vertices.Add(new UnityEngine.Vector3((float)mesh.Vertices[i].x, (float)mesh.Vertices[i].y, (float)mesh.Vertices[i].z));
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if (hasUV1)
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uv1.Add(new UnityEngine.Vector2(mesh.UV1[i].x, mesh.UV1[i].y));
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if (hasUV2)
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uv2.Add(new UnityEngine.Vector2(mesh.UV2[i].x, mesh.UV2[i].y));
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if (hasUV3)
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uv3.Add(new UnityEngine.Vector2(mesh.UV3[i].x, mesh.UV3[i].y));
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if (hasUV4)
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uv4.Add(new UnityEngine.Vector2(mesh.UV4[i].x, mesh.UV4[i].y));
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if (hasColors)
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colors.Add(new UnityEngine.Color(mesh.Colors[i].x, mesh.Colors[i].y, mesh.Colors[i].z, mesh.Colors[i].w));
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normals.Add(new UnityEngine.Vector3(mesh.Normals[i].x, mesh.Normals[i].y, mesh.Normals[i].z));
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bones[i].boneIndex0 = mesh.BoneWeights[i].boneIndex0;
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bones[i].boneIndex1 = mesh.BoneWeights[i].boneIndex1;
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bones[i].boneIndex2 = mesh.BoneWeights[i].boneIndex2;
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bones[i].boneIndex3 = mesh.BoneWeights[i].boneIndex3;
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bones[i].weight0 = mesh.BoneWeights[i].boneWeight0;
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bones[i].weight1 = mesh.BoneWeights[i].boneWeight1;
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bones[i].weight2 = mesh.BoneWeights[i].boneWeight2;
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bones[i].weight3 = mesh.BoneWeights[i].boneWeight3;
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}
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res.SetVertices(vertices);
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res.SetUVs(0, uv1);
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res.SetUVs(1, uv2);
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res.SetUVs(2, uv3);
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res.SetUVs(3, uv4);
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res.SetNormals(normals);
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res.SetColors(colors);
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for (int i = 0; i < mesh.SubMeshCount; ++i)
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res.SetIndices(mesh.GetIndices(i), UnityEngine.MeshTopology.Triangles, i);
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if (hasBones)
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res.boneWeights = bones;
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res.RecalculateBounds();
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return res;
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}
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};
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