> > Probably from total internal reflection.
David Fontaine wrote:
> I thought POV didn't do that...
Well, that would account for black areas.
By the way, I got some interesting effects with ior <1, not to mention <0!
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"How'd ya like to climb this high without no mountain?" --Porky Pine
Anton Sherwood *\\* +1 415 267 0685 *\\* http://www.jps.net/antons/