Re : Culling at the PRIM level

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GRAUX Ludovic (LUDOVIC.GRAUX++at++siege.aerospatiale.fr)
Mon, 10 Jun 1996 16:13:12 +0200

>May be you can improve the culling, testing the product between the >normal
>of the face and the line of sight with a certain value.. (like a cosine)
>and you can get your "calotte"...

     This is a good idea, but my real problem is elsewhere : I don't know how to
     mnipulate pfDispLists in order to eliminate isolated triangles from the
     pfDistList, thus not sending them to the DRAW process. I want to make a
     postcull callback where i test which primitives of the pfGeoSet are inside or
     outside the viewing frustum, and then putting or removing those primitives in
     or from the pfDispList. Moreover, what is the command that "sends" the
     pfDispList from the CULL process to the DRAW process.
     so many questions....
     If you have any example code i will be greatly grateful.

     thanks;
     Mike
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