In article <3a221a8d@news.povray.org>, Warp <war### [at] tagpovrayorg> 
wrote:

>   Did you actually try to render an object with that pigment?

I rendered a unit-radius sphere... :-(


>   It's not completely black :)

Right...it's a black cube surrounded with white, something that could 
just as easily been done using the object pattern with a box. It still 
won't work very well for isosurfaces, which dislike instantaneous 
changes in value.

-- 
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

<><

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Well, my original idea was precisely trying to recreate any object with
an isosurface using an object pigment. Seems that I'm not the first to
get the idea.
  And I understand now why it doesn't work.

  So still no easy non-uniform transformations. Sorry :)

-- 
main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
):_;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/

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Warp wrote:
> 
>   Well, my original idea was precisely trying to recreate any object with
> an isosurface using an object pigment. Seems that I'm not the first to
> get the idea.

Someone tried it a while ago.  Using "object" pattern doesn't work,
because of the "abrupt changes".  Using "proximity" pattern works
better, but is, as expected, awfully slow...

Fabien.

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Fabien Mosen wrote in message <3A227FD2.280D7793@skynet.be>...
> Someone tried it a while ago.  Using "object" pattern doesn't work,
> because of the "abrupt changes".  Using "proximity" pattern works
> better, but is, as expected, awfully slow...


currently I'm trying with specialized patch

ABX

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