If you want it to look realistic (speaking of refractions
here), you want the objects to overlap, POV handles
the refraction-changes properly then.
As about your other problem, I guess the exported meshes
don't fit as you might want them to, otherwise I don't think
POV would come up with this nice and regular spherical
pattern.

--
Tim Nikias
Homepage: http://www.digitaltwilight.de/no_lights/index.html
Email: Tim### [at] gmxde

> This looks for all the world like some kind of coincident surfaces problem -
> but if you say you put 1mm of space between the two surfaces, then I suppose
> it can't be... (You're sure you added 1mm of SPACE rather than 1mm of
> OVERLAP by mistake? <grin> Actually, either way should have solved it
> anyway...) You might try adding a little more space... not much else I can
> think of to suggest really... I would have expected 1mm to do it... Unless
> the problem is something totally different of course!
>
> Sorry.
> Andrew.
>
>

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