Hey, you _are_ a nut :)
I'd just make the sheet out of bezier patches and use a simple constant
scattering media inside. Probably not too dense, so that a little bit of
non-diffuse transparency would remain.

Margus

Peter Popov wrote:
> 
> Well, if you a hardcoding-only POV-Ray nutcake (my ICQ nick is
> pov-nut) you could  try using the SuperPatch to create a function for
> an isosurface and use it as 1) an ithersection of two isosurfaces
> situated closely to make the sheet and 2) a density pattern for a
> scattering media in the sheet to do the fuzzy light effect you are
> after.
> 
> Just a thought.
> 
> Peter

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