Rune wrote:
> Well, bicubic patches are just plain difficult to use in general.
> Because of their four corners, it's very difficult to make advanced
> shapes where the patches are joined up smoothly. Some 3d programs
> which also use patch-like shapes come about this problem by offering
> special patches with 3 or 5 corners to supplement the regular ones
> with 4 corners. Not POV-Ray though.

One could subdivide a triangle into three quadrilaterals (add a point in
each edge and one in the middle); but it does seem like going the long
way around the barn, essentially to make up for a defect in the syntax.

-- 
Anton Sherwood, http://www.ogre.nu/

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