> I have used only color_map and pigment_map so far.

Hmm, impressive. It might render nicely fast. Have you looked into object
patterns? They could provide more flexibility for this kind of thing.

> Hmm.  I am not doing carpets though.
> Don't know how to do them.

Carpets and cloths are almost the same thing.  :o)  And btw, I'm not aware
of others having done this already.

Regards,
Hugo

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