I have a mesh2 with one texture and one interior texture and it does not 
render as I wat.

I understand better the problem: my mesh2 is not closed and it seems 
that the algorithm used to define the front and back side is the same 
than the algorithm to test if a point is inside the mesh: fire a ray in 
one direction and if the  number of intersection is odd you are inside 
(this is what the doc says).

But when the mesh in open, this fails. Clearly, for open mesh inside is 
not meaningfull. But back and front sides are. So this algorithm is a 
wrong choice and one should use the normals or the order of vertices to 
distinguish the back and front side (moreover it will be faster).

I can post a script and an image if I am not being clear.

Post a reply to this message