> 
> Fabian Brau <fab### [at] umhacbe> writes:
> 
> > You are right a combination of texture_map (or even better and
> > more accurate: material_map, like this you can place the erosion where
> 
> Yes, we have all those. The point was to use an algorithm which places the
> erosion automatically. For instance by simulating where raindrops would
> fall on a marble statue.
> (I esp. liked that one: http://graphics.lcs.mit.edu/~hkp/OldPicts/venus.tif)
> 
> --
> Sigmund Kyrre Aas

As Ron mentioned I brought this up a couple of months ago in the unofficial
patches group. An excellent paper on patina's can be found at -

http://graphics.lcs.mit.edu/~dorsey/papers/patina/

-- 
Ken Tyler -  1300+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/

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