PoD wrote:
> 
> Dan Connelly wrote:
> >
> > This is pretty trivial with #macro, union, and polygon.
> >
> > for example (not debugged)
> >
> > #macro metabox(P0, P1, P2, P3, P4, P5, P6, P7)
> >   union {
> >     polygon {5, P0, P1, P2, P3, P0}
> >     polygon {5, P4, P5, P6, P7, P4}
> >     polygon {5, P0, P1, P5, P4, P0}
> >     polygon {5, P1, P2, P6, P5, P1}
> >     polygon {5, P2, P3, P7, P6, P3}
> >     polygon {5, P3, P0, P4, P7, P3}
> >   }
> > #end
> >
> > Mikael Gustafsson wrote:
> > >
> > > Sorry for a second post but the last sentence was a bit confusing.
> > >
> > > With POV-Ray 3.1 I think it would be possible to incorporate a new object.
> > > Well, here's my two cents on the subject. The current box is probably one of
> > > the most used objects in POV, but it has some drawbacks. The current syntax
> > > only allows boxes with 90 degree corners. But if POV inwoked a new object
> > > that lets the user define all eight corners of the box, it would among other
> > > things help creating #while loops that have flat areas as complex matrix
> > > transformations that are required with the current boxes coule be avoided.
> > >
> > > Mikael Gustafsson
> > > mik### [at] nettifi
> >
> > --
> > http://www.flash.net/~djconnel/
> 
> But that can't be CSGd.

You could create the object with an intersection of planes. Then in
could be CSGd.

Guy

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