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Christoph Hormann schrieb in Nachricht <3A6052C4.57639B46@gmx.de>...
>Sounds tricky, if i understand it right it should look like an object
>covered by a thin layer of snow (which would not reach the parts covered
>by overhangs).
>
Hm yes, I thought the other way round, but that doesn't matter.
>I posted a simple snowing macro some time ago, but it would be slow and
>also modifies the geometry (you could use the object pattern to avoid
>this)
>
I've found the macro and remember the related image. But if there is another
sulotion, I would prefer not to use trace() for this problem. The Object i'm
thinking of is quite complicate and I would have to call trace more than
once for every "row". Seems quite slow to me (and I never used it before
:-)).
>If your object is an isosurface or another simple mathematical shape, you
>could try to construct a function pattern for that, but it seems quite
>difficult to me.
Well, it's made out of some Isos, but I wouldn't want to try to make one
single function out of them.
>
>Anyway it would be quite possible to add this as a new internal pattern to
>povray.
If there is no other easy way, that would be quite usefull IMHO. If it
would be possible to specify a "delay" for the slope dependent texture that
would suffice, I think. There should be a way to specify what should be
delayed (positiv/nagative or no slope), too. But I'm no programmer (at least
not in C), so I'll have to wait and see ....
Thanks,
Marc-Hendrik
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