I checked out what you had there and also didn't see any way of getting the inside to
become outside, which is the case for that torus with the larger minor radius than
major.
Not that it was going to be possible using inverse or variations thereof (I even gave
scale -1 a try), but as it turns out I couldn't even get the MegaPov
'interior_texture' to
put it right.
This means to me that something goes wrong with that torus.  Not a complete surprise
either since it's been said before by other people how that particular shape isn't
reliable.
The problem is in the inner part of the torus, even though usually an outer surface,
ends
up inside itself.  So the raytracer must be confusing it entirely.

Bob

Post a reply to this message