Ron Parker <ron### [at] povrayorg> wrote:
: You missed a step.  After you finish all the surfaces, you have to make sure 
: they're correctly oriented.  Even if it's just one surface, you have to 
: make sure you haven't inverted it.

  Well, this is an interesting question. How do you determine for a closed
mesh surface, which side is inside and which one is outside?
  What about open mesh surfaces?

-- 
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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