> Well if I use scattering media, and those picutres contains fractals: and
> POVRAY know what fractal is: can I use fractal for pattern in scattering
> media?
> Or say in other word : can I make scattering media "follows" fractal
> results?


(Is there a reason you didn't respond to my post specifically?)

If your pattern is based on a fractal, then you may have a few options:

 - If it's the mandel or julia fractals, POV-Ray has built-in patterns to
handle these.
 - If you can express the fractal through recursion or iteration as a
function{}, you can use that to construct the density pattern.
 - Otherwise, you'll probably have to somehow generate a density_file (.df3)
based on your fractal and use this. (This could be done with an external
program or with POV-Ray and a utility that turns a series of 2D images into
the 3D df3 file.

However, if none of these options are practical, then you should probably
use the solution that Mike Williams gave.

 - Slime
 [ http://www.slimeland.com/ ]

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