turk@Apple.COM (Ken "Turk" Turkowski) (02/01/91)
In article <1991Jan15.103323.5755@irisa.fr> leconte@irisa.fr (Thierry Leconte) writes: > I'm writing a ray tracer ( yes yet another..) which accepts NFF format as > input. >I have a problem with patches. Is there a standard way to > interpolate the normal >when the number of vertices is greater than 4 ? >I > know some techniques when this number is 3 or 4 but I don't see any > correct way to >generalize . >Rayshade allows only triangular pacthes is > it a sign ? > >Any ideas ? > Yes. Interpolate the tangents and take the cross product. -- Ken Turkowski @ Apple Computer, Inc., Cupertino, CA Internet: turk@apple.com Applelink: TURK UUCP: sun!apple!turk