Ah, that helps.

I will post more specifics, but let me play with it first - thinking through
what's 'inside' explains what I was getting.  Let me fiddle and I'll post
something soon in images.

        == John ==

"Margus Ramst" <mar### [at] peakeduee> wrote in message
news:3b47b3fc@news.povray.org...
> "John D. Gwinner" <jgw### [at] hotmailcom> wrote:
>
> > Can you use Heightfields with CSG?
> >
>
> Yes, you can; unlike meshes they have a well-defined interior and
exterior.
> Basically, all points beneath the height field are considered to be
> "inside", even though there is no visible delimiting surface there.
>
> > I'm getting odd results.
> >
>
> Could you be a bit more specific?
>
> --
> Margus Ramst
>
> Personal e-mail: mar### [at] peakeduee
> TAG (Team Assistance Group) e-mail: mar### [at] tagpovrayorg
> Home page http://www.hot.ee/margusrt

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