is the visibility of a Polygon exposed?
- To: mathgroup at smc.vnet.net
- Subject: [mg83653] is the visibility of a Polygon exposed?
- From: congruentialuminaire at yahoo.com
- Date: Tue, 27 Nov 2007 06:15:17 -0500 (EST)
Hello Mathematica UG: Is it possible for my code to tell if a Polygon (in my graphics object) is visible? I assume that this is based upon (or is affected by) the ViewPoint-> setting. Further, I assume that the kernel is deriving this somewhere to do rendering. Do I have any access to this? If I evaluate: q = PolyhedronData["SnubCube"] I can see the component Polygon and GraphicsComplex objects that make up the Graphics3D. I want to make a code decision based on whether a face is showing. TIA. Regards..Roger W.