Maps a manifold triangle index to a WLE submesh index. The format is:
[0]: submesh index of manifold triangle 0
[1]: triangle index of manifold triangle 0
[2]: submesh index of manifold triangle 1
[3]: triangle index of manifold triangle 1
...
[2n]: submesh index of manifold triangle n
[2n + 1]: triangle index of manifold triangle n
Maps a manifold triangle index to a WLE submesh index. The format is: [0]: submesh index of manifold triangle 0 [1]: triangle index of manifold triangle 0 [2]: submesh index of manifold triangle 1 [3]: triangle index of manifold triangle 1 ... [2n]: submesh index of manifold triangle n [2n + 1]: triangle index of manifold triangle n