Actually with a 'texture_map' it can be done okay, but then no layered
textures are allowed into one so a 'pigment_map' is what you end up
having to use.  Think I'm saying this right.  I'm usually juggling
stuff so much I don't remember or take any notes.

Bob

Ken <tyl### [at] pacbellnet> wrote in message
news:37D58D0B.67D9AC92@pacbell.net...
>
>
> Simon de Vet wrote:
> >
> > Derek Zahn wrote:
> >
> > > Thanks to Bob and Chris for your help!  In many instances this
seems to do
> > > what I want!
> >
> > The problem with these techniques is that the rust/stains are
randomly located
> > (more or less).. doesn't work well for rust on the edge of a car
door, or a
> > stain below a dripping faucet.
> >
> > In cases where stains must be precisely located, try an imagemap,
or model
> > them directly (blobs for rust, maybe...)
>
> Small height fields work good for rough rust and can be applied
precisely
> where needed.
>
> --
> Ken Tyler
>
> See my 850+ Povray and 3D Rendering and Raytracing Links at:
> http://home.pacbell.net/tylereng/index.html

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