[DllImport("VertexTweakerCore")] static extern void npProjectVerticesDirectional( ref npMeshData model, ref npMeshData target, Vector3 ray_dir, npProjectVerticesMode mode, float max_distance, int PNT, bool mask);
[DllImport("VertexTweakerCore")] static extern void npProjectVertices( ref npMeshData model, ref npMeshData target, IntPtr ray_dirs, npProjectVerticesMode mode, float max_distance, int PNT, bool mask);