Distingushing between the front and back faces of a quad-mesh

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From: Hossein Lari-Najafi
Date: Fri, 31 Jul 1992 17:45

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I am trying to use the PHIGS' quadrilateral mesh. For visualization reason, 
I would like to give the back side of it the mesh PSTYLE_SOLID.  I refered
to the example on page 240-241 of the Gaskins' book, it make sence, but it
does not work (believe me, I ftp'd the example and ran it).  

Is there anyone out there that knows how to do this?  If so, I will
appreciate it if you send me a note in this regard at the following e-mail.

Thank you much

Hossein Larinajafi
najafi@everest.ee.umn.edu

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From: najafi@matterhorn.ee.umn.edu (Hossein Lari-Najafi)
Subject: Distingushing between the front and back faces of a quad-mesh
Message-ID: <1992Jul31.174551.11445@news2.cis.umn.edu>
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Organization: University of Minnesota, Minneapolis, EE dept.
Date: Fri, 31 Jul 1992 17:45:51 GMT
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