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First difference the two tubes then difference the result from the cube,
like so:
difference {
object {Cube}
difference {
object {OuterTube}
object {InnerTube}
}
}
Hope I've followed correctly.
psl### [at] nmia com wrote:
>
> I am currently working with POVLAB. I have a basic understanding of CSG's
> in POVRAY, and have started working with POVLABs supported CSG option, but
> am having some trouble. Basically, I'm trying to make a hole between 2
> objects, but I can't get it to work. Is this simply a POVRAY
> impossibility, or a POVLAB limitation? I have 2 tubes, both of which are
> vertical. When I put something between them, like say a cube, and then
> perform a CSG Difference operation on ONE tube and the cube, the cube
> makes a succesful hole in that tube as expected. However, I have no clue
> how to make a hole clean through both tubes. I performed different
> Difference operations, but the only thing I usually wind up with is 2
> invisible tubes with the cube as visible. I've tried playing with the
> function, but I cannot seem to get this to work. I respectfully ask for
> some serious help....I can't seem to figure it out. Thanks in advance...
>
> ------------
> psl### [at] nmia com
--
omniVERSE: beyond the universe
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