In article <3c7b48c6$1@news.povray.org>,


> > real world remotely like this. The closest thing would be an ior
> > variable over space, which POV is incapable of doing (and which would
> 
> I don't care about IOR. I just want a thing like thick fog. However, same
> problem of course.

Then why are you trying to apply different interiors to individual 
triangles? Just use a density pattern. POV is capable of rendering a 
varying density media...it doesn't change the ray direction, so it 
requires much less computing power.
Maybe you should give a better description of what you are trying to do.

-- 
Christopher James Huff <chr### [at] maccom>
POV-Ray TAG e-mail: chr### [at] tagpovrayorg
TAG web site: http://tag.povray.org/

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