Christophe Raffalli wrote:
> 
> I read the manual about interior texture. It says that it can be apply 
> to triangle (and I assume mesh and mesh2) but I did not find (with a 
> grep) the definition of backside and frontside for triangles, mesh and 
> mesh2 ?

AFAIK the use of interior_texture depends on the normal direction and 
the normal direction of a flat triangle in a mesh depends on the order 
of vertices.  In case of a smooth triangle this is of course more 
complicated, you probably can even create triangles with partly 
interior_texture and partly not.

Christoph

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