In article <01bfcf69$29d98460$6a7889d0@daysix>, "H. E. Day" 
<Pov### [at] aolcom> wrote:

> I was just surfing the web when I came up with an idea on how to do 
> patina and metal wear.  Here it is:
> You know how the find_edges post process filter compares the 
> differences in normal surface angles?  How about we use this in a 
> pigment? Sort of a combination of Find_edges and slope?  I if an 
> angle is getting sharper, you could put a shiny line there, and if it 
> is getting shallower, put a dark line.  Hmm.  Didn't quite explain it 
> as well as I'd like.  Once more:

This is similar to the way I tried to do it, except I implemented it as 
a pattern so you could use it as a pigment/texture map. Unfortunately, I 
never got good results...maybe I will make another try.

-- 
Christopher James Huff - Personal e-mail: chr### [at] maccom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://chrishuff.dhs.org/
TAG Web page: http://tag.povray.org/

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