Thanks very much Micha, I shall give that a try.

Andy Cocker


"Micha Riser" <mri### [at] datacommch> wrote in message
news:39E21A29.E58FB8DD@datacomm.ch...
>
> Just set 'max_trace 5' in your isofunction. I haven't tested it now but
> I think this should do it. (See MegaPOV Docs 5.2.5 CSG-Operation).
> >
> > #if (Main)
> > intersection {
> > isosurface {
> >     function {Func(x, y, z)}
> >     threshold 0.5
>
> -->    max_trace 5
>
> >     contained_by {
> >          sphere {<0,0,0>,4 }//box {<-4,-4,-4>, < 4, 4, 4>}
> >     }
> >     texture {tex1}
> >     scale 0.5
> >
> > }
> > object {X texture {tex1}hollow}
> > rotate z*45}
> > #end
>
> --
> --------------------------------------------------------------
>  email:                      mic### [at] michavirtualavenet
>  visit my homepage:          http://micha.virtualave.net
>  POVRay Objects Collection:  http://povobjects.keyspace.de

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