Tor Olav Kristensen wrote:
> 
> Alf Peake wrote:
> > Any ideas where the problem is please?
> >
> 
> I have no idea of what causes this error, but I
> have included a file below that produces similar
> errors in my POV-Ray v3.1g for Windows 98.
> 
> The spheres are "shining" through the cylinder
> when there are many of them in a "sweep" behind it.

I just discovered that the problem seems to 
disappear (in both mine and your scene) if one uses

merge {

instead of

union {

in the difference statement, then the problem 
disappears.

And I if you are planning on making this into a 
object of glass, then merge is what you'll need 
to use anyway.

Tor Olav
--
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http://www.crosswinds.net/~tok/tokrays.html

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