On Tue, 8 Jul 2003 18:44:14 +0200, "Jaap Frank" <jjf### [at] xs4allnl> wrote:
> can anyone tell me how POV decide what the front or back side> of a triangle is?
The answer is hidden in manual in first sentence of "6.5.2 Finite Patch
Primitives" chapter :-)
ABX