Bob Hughes <per### [at] aolcom?subject=pov-news:> wrote:
: Why not trace both?

  It's not enough to trace just one ray to see this.
  Well, if the surface is a plane and you trace a ray perpendicular to it,
then it's enough. In almost any other case it's not.

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

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