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CreateErasedMeshAsync

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ousttrue
2021-09-09 14:54:35 +09:00
parent ca2872c517
commit fe9ae88195
1 changed files with 38 additions and 6 deletions
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44
Assets/UniGLTF/Runtime/MeshUtility/BoneMeshEraser.cs
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@@ -1,7 +1,8 @@
using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using UnityEngine;
using VRMShaders;
namespace UniGLTF.MeshUtility
{
@@ -35,6 +36,13 @@ namespace UniGLTF.MeshUtility
}
}
/// <summary>
/// skip triangles that has weight for exclude, return valid triangle count
/// </summary>
/// <param name="triangles"></param>
/// <param name="bws"></param>
/// <param name="exclude"></param>
/// <returns></returns>
static int ExcludeTriangles(int[] triangles, BoneWeight[] bws, int[] exclude)
{
int count = 0;
@@ -116,8 +124,28 @@ namespace UniGLTF.MeshUtility
return new ExcludeBoneIndex(b0, b1, b2, b3);
}
public static Mesh CreateErasedMesh(Mesh src, int[] eraseBoneIndices)
/// <summary>
/// Erase triangles that has boneWeight for eraseBone
/// </summary>
/// <param name="indices"></param>
/// <param name="boneWeights"></param>
/// <param name="eraseBoneIndices"></param>
/// <returns></returns>
public static int[] GetExcludedIndices(int[] indices, BoneWeight[] boneWeights, int[] eraseBoneIndices)
{
var count = ExcludeTriangles(indices, boneWeights, eraseBoneIndices);
var dst = new int[count];
Array.Copy(indices, 0, dst, 0, count);
return dst;
}
public static async Task<Mesh> CreateErasedMeshAsync(Mesh src, int[] eraseBoneIndices, IAwaitCaller awaitCaller)
{
if (awaitCaller == null)
{
awaitCaller = new ImmediateCaller();
}
/*
Debug.LogFormat("{0} exclude: {1}",
src.name,
@@ -140,16 +168,20 @@ namespace UniGLTF.MeshUtility
mesh.subMeshCount = src.subMeshCount;
for (int i = 0; i < src.subMeshCount; ++i)
{
var indices = src.GetIndices(i);
var count = ExcludeTriangles(indices, mesh.boneWeights, eraseBoneIndices);
var dst = new int[count];
Array.Copy(indices, 0, dst, 0, count);
var dst = await awaitCaller.Run(() => GetExcludedIndices(src.GetIndices(i), mesh.boneWeights, eraseBoneIndices));
mesh.SetIndices(dst, MeshTopology.Triangles, i);
}
return mesh;
}
public static Mesh CreateErasedMesh(Mesh src, int[] eraseBoneIndices)
{
var task = CreateErasedMeshAsync(src, eraseBoneIndices, new ImmediateCaller());
task.Wait();
return task.Result;
}
public static IEnumerable<Transform> Ancestor(this Transform t)
{
yield return t;