> 
> [...]
> 
> Caching is afaik impossible at function level but yes, I'm currently
> implementing adaptive method with as small operetions as possible.
> 

Caching function values could be an interesting strategy for improving
function speed in general, it would of course have to be implemented
inside Povray.  There are not so many situations apart blurring where you
evaluate exactly the same point several times, but it could be used like a
function image in a pigment instead of using the function directly just
without calculating the whole grid in advance.

Does this make sense somehow?

Christoph

-- 
POV-Ray tutorials, IsoWood include,                 
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Last updated 21 Feb. 2002 _____./\/^>_*_<^\/\.______

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