Looks really neat, reminds me of some things with eval_pigment i did some
time ago.  Have you tried a blob version of the same thing?

Christoph

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/

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