David Fontaine <dav### [at] faricynet> wrote:
: They *are* solid, but the texturing is superficial.

  Nope. They are only surfaces.
  They are solid when interacting with fog and media, but that's all.

  A simple test: Move the camera inside an object. Is it solid?

  Btw, media is one exception where an "object" is not a surface, but more
or less solid. However, media is seldom considered an object.

-- 
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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