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In article <39CD33F3.E82E17FC@peak.edu.ee>, Margus Ramst
<mar### [at] peak edu ee> wrote:
> Perhaps you should try placing the grass in some slope/altitude
> dependant pattern (although you might have to do this with trace, I'm
> not sure if the "slope" pattern would work with eval_pigment). A line
> of grass running straight across a dune seems a bit strange to me.
The slope pattern requires intesection information, so it will not work
with the eval_pattern() or eval_pigment() functions. You would have to
do your own slope pattern with the trace() function.
--
Christopher James Huff
Personal: chr### [at] mac com, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tag povray org, http://tag.povray.org/
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