public static bool DetectChange(int id, Mesh mesh, Transform transform = null)
{
if (mesh == null)
return false;
if (detectChangeTable.ContainsKey(id))
{
MeshDataMirror mirror = detectChangeTable[id];
bool change = false;
if (transform != null) {
change =
mirror.position != transform.position ||
mirror.rotation != transform.rotation ||
mirror.scale != transform.GetScale();
}
if (!change) {
change =
mirror.meshInstanceID != mesh.GetInstanceID() ||
mirror.vertexCount != mesh.vertexCount ||
mirror.blendShapeCount != mesh.blendShapeCount ||
mirror.subMeshCount != mesh.subMeshCount ||
//mirror.triangleCount != mesh.triangles.Length ||
//mirror.tangentCount != mesh.tangents.Length ||
//mirror.uvCount != mesh.uv.Length ||
mirror.extents != mesh.bounds.extents;
}
return change;
} else {
MeshDataMirror mirror = new MeshDataMirror();
mirror.meshInstanceID = mesh.GetInstanceID();
mirror.vertexCount = mesh.vertexCount;
mirror.blendShapeCount = mesh.blendShapeCount;
mirror.subMeshCount = mesh.subMeshCount;
//mirror.triangleCount = mesh.triangles.Length;
//mirror.tangentCount = mesh.tangents.Length;
//mirror.uvCount = mesh.uv.Length;
mirror.extents = mesh.bounds.extents;
if (transform != null) {
mirror.position = transform.position;
mirror.rotation = transform.rotation;
mirror.scale = transform.GetScale();
}
detectChangeTable.Add(id, mirror);
return true;
}
}
