Chris Capel <chr### [at] hotmailcom> wrote:
:>Particularly, using an intersect of a cube and a heightfield can make a
: field
:>with nice solid edges, which is often handy...

: Could you give an example of this?  I tried doing this, but could not get it
: working correctly.  This may be exactly what I need...

intersection
{ box { 0,1 }
  height_field { gif "height.gif" smooth }

  (transformations and texturing here)
}

-- 
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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