Here we go. I just had a quick look at the paper and used the formula from 
the 3-sided beziers. First I implemented it as parametric surface which 
more or less worked but is slow as hell. But from that it was not too hard 
to create a version that produces a mesh. It could be extended to generate 
smoot_triangles.

You can find both versions in p.t.s-f. Hope it works as intended. If so, 
tell me and I will try the 5 and 6 sided as well.

- Micha

-- 
http://objects.povworld.org - the POV-Ray Objects Collection

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