public void CombineMesh(ChunkMeshData chunkMeshData)
{
//获取输出meshData
Mesh.MeshDataArray outMeshDataArray = Mesh.AllocateWritableMeshData(1);
Mesh.MeshData outMesh = outMeshDataArray[0];
Mesh.MeshDataArray outMeshDataArrayCollider = Mesh.AllocateWritableMeshData(1);
Mesh.MeshData outMeshCollider = outMeshDataArrayCollider[0];
Mesh.MeshDataArray outMeshDataArrayTrigger = Mesh.AllocateWritableMeshData(1);
Mesh.MeshData outMeshTrigger = outMeshDataArrayTrigger[0];
int subMeshCount = 0;
int subMeshIndexCount = 0;
List <int> trisDataAll = new List <int>();
List <SubMeshDescriptor> listSubMeshDescriptor = new List <SubMeshDescriptor>();
for (int i = 0; i < chunkMeshData.dicTris.Length; i++)
{
List <int> trisData = chunkMeshData.dicTris[i];
if (trisData.IsNull())
{
continue;
}
trisDataAll.AddRange(trisData);
SubMeshDescriptor subMeshDesc = new SubMeshDescriptor
{
indexStart = subMeshIndexCount,
indexCount = trisData.Count
};
listSubMeshDescriptor.Add(subMeshDesc);
subMeshCount++;
subMeshIndexCount += trisData.Count;
}
VertexStruct[] listVertex = chunkMeshData.GetVertexStruct();
outMesh.SetVertexBufferParams(listVertex.Length, vertexAttributeDescriptors);
VertexStruct[] listVertexCollider = chunkMeshData.GetVertexStructCollider();
outMeshCollider.SetVertexBufferParams(listVertexCollider.Length, vertexAttributeDescriptors);
VertexStruct[] listVertexTrigger = chunkMeshData.GetVertexStructTrigger();
outMeshTrigger.SetVertexBufferParams(listVertexTrigger.Length, vertexAttributeDescriptors);
//获取点信息
NativeArray <VertexStruct> vertexData = outMesh.GetVertexData <VertexStruct>();
NativeArray <VertexStruct> vertexDataCollider = outMeshCollider.GetVertexData <VertexStruct>();
NativeArray <VertexStruct> vertexDataTrigger = outMeshTrigger.GetVertexData <VertexStruct>();
//设置点信息
NativeArray <VertexStruct> .Copy(listVertex, vertexData);
NativeArray <VertexStruct> .Copy(listVertexCollider, vertexDataCollider);
NativeArray <VertexStruct> .Copy(listVertexTrigger, vertexDataTrigger);
//设置三角数量
outMesh.SetIndexBufferParams(trisDataAll.Count, IndexFormat.UInt32);
outMeshCollider.SetIndexBufferParams(chunkMeshData.trisCollider.Count, IndexFormat.UInt32);
outMeshTrigger.SetIndexBufferParams(chunkMeshData.trisTrigger.Count, IndexFormat.UInt32);
//获取三角下标
NativeArray <int> triangelData = outMesh.GetIndexData <int>();
NativeArray <int> triangelDataCollider = outMeshCollider.GetIndexData <int>();
NativeArray <int> triangelDataTrigger = outMeshTrigger.GetIndexData <int>();
NativeArray <int> .Copy(trisDataAll.ToArray(), triangelData);
NativeArray <int> .Copy(chunkMeshData.trisCollider.ToArray(), triangelDataCollider);
NativeArray <int> .Copy(chunkMeshData.trisTrigger.ToArray(), triangelDataTrigger);
outMesh.subMeshCount = subMeshCount;
outMeshCollider.subMeshCount = 1;
outMeshTrigger.subMeshCount = 1;
for (int i = 0; i < listSubMeshDescriptor.Count; i++)
{
outMesh.SetSubMesh(i, listSubMeshDescriptor[i]);
}
outMeshCollider.SetSubMesh(0, new SubMeshDescriptor
{
indexStart = 0,
indexCount = chunkMeshData.trisCollider.Count
});
outMeshTrigger.SetSubMesh(0, new SubMeshDescriptor
{
indexStart = 0,
indexCount = chunkMeshData.trisTrigger.Count
});
Mesh.ApplyAndDisposeWritableMeshData(outMeshDataArray, chunkMesh);
Mesh.ApplyAndDisposeWritableMeshData(outMeshDataArrayCollider, chunkMeshCollider);
Mesh.ApplyAndDisposeWritableMeshData(outMeshDataArrayTrigger, chunkMeshTrigger);
chunkMesh.RecalculateNormals();
chunkMesh.RecalculateBounds();
//chunkMeshCollider.RecalculateNormals();
//chunkMeshCollider.RecalculateBounds();
//chunkMeshTrigger.RecalculateNormals();
//chunkMeshTrigger.RecalculateBounds();
vertexData.Dispose();
triangelData.Dispose();
vertexDataCollider.Dispose();
triangelDataCollider.Dispose();
vertexDataTrigger.Dispose();
triangelDataTrigger.Dispose();
}
