Here is the crevice grime (and edge detect) macro I have been working on.  I
ahve also included a sample scene.  I tried to document it and clean it up
somewhat.  Feel free to try it out and modify.  Please post any results or
problems.

-tgq

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Attachments:
Download 'crevice.inc.txt' (11 KB)

"Trevor G Quayle" <Tin### [at] hotmailcom> wrote:
> Here is the crevice grime (and edge detect) macro I have been working on.  I
> ahve also included a sample scene.  I tried to document it and clean it up
> somewhat.  Feel free to try it out and modify.  Please post any results or
> problems.
>
> -tgq

Sample scene of image in p.b.i

-tgq

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Attachments:
Download 'creviceexample.pov.txt' (3 KB)

"Trevor G Quayle" <Tin### [at] hotmailcom> wrote:
> Here is the crevice grime (and edge detect) macro I have been working on.  I
> ahve also included a sample scene.  I tried to document it and clean it up
> somewhat.  Feel free to try it out and modify.  Please post any results or
> problems.
>
> -tgq

A slight modification to the macro.  I removed the function wrapper from inside
so it should be used outside now:

pigment{
  function{Crevice(,,,,,,,,)}
  colour_map{...}
}

This allows the convenience of manipulating it with other functions:

#declare Func2=function{pattern{bozo}}

pigment{
  function{Crevice(,,,,,,,,)*Func2(x,y,z)}
  colour_map{...}
}



-tgq

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Attachments:
Download 'crevice.inc.txt' (11 KB)

New revision.
I have corrected an error in how it was handling vertical normal vectors.

-tgq

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Attachments:
Download 'crevice.inc.txt' (11 KB)