Hi, thank you for the reply. to give you some more information of my situation: i want to visualize certain roof types. i generate the geometry information (vertices, tex-coords, normals) programmatically in my application. i'm using triangle_strips with drawElements indices to construct my roof types - one reason for this is, i have to insert some "index-swaps" to get certain roofforms done with only one triangle_strip primitive per roof.
the next step would be to calculate the normal vectors. my first (and most confortable) idea was to use the osg::smoothingVisitor. the problem arrived with that was, i was getting averaged normals, which didn't represent roofs very well. so i was looking for another way where i could use for every planar face of my triangle_strip its own normals to get facetted looking roofs and posted here in this thread the question how to do this. now, after some further research, i'm currently thinking, due the circumstance of shared vertices in a triangle_strip, it is impossible to assign multiple normals to one vertex. i' ve read of a "workaround" where to use one normal for every triangle_strip's planar face in addition and using FLATSHADING. i know this is not the same like the above mentioned in SMOOTHSHADING, but i think it would certainly better than the average normals. so what do you think of that approach, or maybe you might have some other ideas? Best Regards, Christian Sam ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=11799#11799 _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
