But WHY is there a torus depression?  The torus should carve out ONLY where
the intersection of the height field and torus intersect, not have an
"extra" area showing outside of the heightfield.  While a "clear" pigment
works it is still not behaving the way a standard solid object would.

"Chris Huff" <chr### [at] yahoocom> wrote in message
news:chrishuff_99-7565C0.17595604012000@news.povray.org...
> In article <387276b9@news.povray.org>, "Patrick Dugan"
> <pat### [at] usticom> wrote:
>
> > Now I'll have to find that to make I'm not hallucinating.  I was pretty
> > sure
> > that the docs mentioned that clipping or differences cannot be performed
> > on
> > "non" solid objects like height fields, dics, planes, etc.  If a
> > difference
> > is supposed to work with a height field (like removing a box shape from
a
> > height field) then I cannot get that to function correctly.  I will post
> > some example code that demonstrates my problem.
>
> Differences and other CSG operations don't work on non-solid objects,
> but a height_field is a solid object, it has a defined inside and
> outside. I think clipping works on both with no problems, but it isn't
> exactly a CSG operation.
>
> --
> Chris Huff
> e-mail: chr### [at] yahoocom
> Web page: http://chrishuff.dhs.org/

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