In article <MPG.1797f33af91f8e37989b84@news.povray.org>,
 Jamie Davison <jam### [at] ntlworldcom> wrote:

> Hmm...  To really slow things down, would there be any way to use the 
> trick to simulate variable internal IOR, however crudely?
> 
> It would probably require an obscenely high max_trace_level though.

You can, and it does. It can get very slow.


> And i can't remember if you can apply a pattern to the surface iro or 
> not, as I't sbeen a while since I played with POV.

You can't any more, that was removed in 3.1 because it didn't really 
make any sense. Earlier versions had ior in the finish block, so you 
could use a texture_map, 3.1 and 3.5 have it in the interior block.

However, you could apply a normal to the refracting layers if all you 
want is to introduce some irregularities.

-- 
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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