Patrick Elliott wrote:
> Hmm. Actually, I had an odd thought a while back. Not variable
> "internal" ior, like some people would love to see, but variable surface
> ior. Use a map, just like a texture, bozo, etc., and perturb the angle
> of entry and exit, based on the variability of the pattern. Yeah, yeah,
> you could "sort of" do this by changing the shape of the object, but
> that isn't always optimal for some applications I can think of (such as
> if you where making a texture to use in something else, maybe). But, I
> do wonder what the result would end up looking like.

I believe that was already possible, back when ior was part of the texture 
block. Then POV-Ray added the new "interior" block which cannot be used in a 
pattern.

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