Thanks.  Looks interesting.  I've downloaded the code and will give it a
try.

Jim

"Thomas Willhalm" <tho### [at] wwwde> wrote in message
news:3f9fd9ee@news.povray.org...
> Christopher James Huff wrote:
>
> > In article <3f9edeb3$1@news.povray.org>,
> >  "Jim Kress" <pov### [at] kressworkscom> wrote:
> >
> >> Would anyone provide to me some POV code for a crumbling wall?  I
> >> searched
> >> the POV newsgroups and could not find any such code.  All I could find
> >> was
> >> code for a brick wall.  I have a solid wall so the brick code will not
> >> work. It won't give me the jagged, crumbled edge characteristic of a
> >> solid wall being broken (think cement wall).
> >
> > Intersect a box with a height field, or use an isosurface. The height
> > field method can only easily do crumbling from the top, an isosurface
> > can imitate crumbling in the sides as well.
>
> I did some kind of test image for this method. I tried to imitate
> http://graphics.stanford.EDU/papers/displace/gamma-corrected/
> My image including povray source is on
> http://mitglied.lycos.de/willhalm/tracegallery/
>
> Happy tracing
> Thomas
>
> -- 
> www := web

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