Asymmetric Frustrum

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Hendrik-Jan van Veen (veen++at++onion.mpik-tueb.mpg.de)
Tue, 1 Jul 1997 14:35:09 +0000

We run Performer 2.1 on a Onyx2 IR and need to use asymmetric
frustrums. Man pfChannel seems to suggest to use
pfMakePerspChan(pfChannel* chan, float left, float right, float bottom,
float top). I couldn't figure out what coordinate system to use for
left,right,top and bottom though. The example in the manpage seem to
suggest fractions of the total FOV but how to set this? Calling
pfChanFOV didn't seem to make a difference.

                Dr. Hendrik-Jan van Veen

      Max-Planck-Institute for Biological Cybernetics
      Spemannstrasse 38 72076 Tuebingen GERMANY
      tel: +49-7071-601-631 fax: +49-7071-601-616
             e-mail: veen++at++mpik-tueb.mpg.de
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