Jettero Heller wrote:
> 
> I hope I'm doing something stupid so I can get past this and move
> on with my project.  I have included some sources so you can
> catch my drift...
> 
> When c=1, you'll see a cute little scene with a pyramid cut
> across by a thick plane.  Excellent.  Almost what I want.  Then,
> when c=2, you'll see me cutting a hole out of the plane.  Pretty
> predictable stuff.
> 
> And finally, when c=3, I'm intending to cut a rhomboid thingy out
> of the plane, but instead I'm getting the rhomboid as if I'd
> accidentally used intersection instead of difference.
> 
> How can I cut out the rhomboid instead of ... whatever that was.

It looks to me like it is related to a bug in the evaluation of meshes when
used in CSG operations.

See - http://news.povray.org/povray.bugreports/27285/?tmax=100

As far as I know this has been fixed for the release of POV-Ray v3.51 which
is not yet available to the public.

-- 
Ken Tyler

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