Was just happening to be looking at this site on opengl.org for hidden line removal algorithms when I saw this for Constructive Solid Geometry:
http://www.opengl.org//resources/code/samples/advanced/advanced96/node33.html#SECTION00094000000000000000 BTW, Hidden line removal is a snap with osg! On 10/24/06, Gordon Tomlinson <[EMAIL PROTECTED]> wrote:
No Opengl does not support wholes directly in polygon,you will have to decompose your beam in to a finer set of polygons and then create your holes by put linling with polygons etc. Basically waht you really need some geometry Boolean operations which are not something you would normally find in a scene graph there really a modeling package need. I have seen code around on the net( along time ago) that may help try a google on Boolean operation and Opengl etc. Best Regards Gordon __________________________________________________________ Gordon Tomlinson Email : gordon.tomlinson @ overwatch.com YIM/AIM: Gordon3dBrit MSN IM : Gordon3dBrit @ 3dSceneGraph.com __________________________________________________________ "Self defence is not a function of learning tricks but is a function of how quickly and intensely one can arouse one's instinct for survival" - Master Tambo Tetsura -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Steven T. Hatton Sent: Tuesday, October 24, 2006 4:08 AM To: osg users Subject: [osg-users] Drilling Holes in Beams? It's fairly easy to create a plank using osg::PrimitiveSet::QUADS, but I don't see an obvious way to put a hole in such a thing. Is there an established convention for doing this sort of thing? One thing I want to do is create a flat plank of "steel" with bolt holes in it. As far as I know, there are no OpenGL primitive constructs that can have holes in them. _______________________________________________ osg-users mailing list [email protected] http://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/ _______________________________________________ osg-users mailing list [email protected] http://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/
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