> SNIPPED Function-Pigment/Pattern-Issue

Ah, thank you, now I understand. It does make sense after all... ;-)

> To make things even better, you could try rewriting the whole thing to
> use patterns instead of pigments. The code will probably be simpler and
> the processing more efficient without those unwanted .blue and .green
> channels.

Care to give a small starter with how to use patterns with functions? What I
do now is simply use a pattern and use a colormap ranging from rgb 0 to rgb
1, but not just {[0 rgb 0][1 rgb 1]}, so I'm not sure if that is possible
with just patterns.

Regards,
Tim

-- 
"Tim Nikias v2.0"
Homepage: <http://www.nolights.de>

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