Re: More wireframe renderer

[James W. <ja...@fr...>]

Stefan Huber wrote:

> You have right. Partly (sorry for not testing the issue thoroughly). 
> For most geometries Wireframe backface culling works. But at least 
> not for Cube, Mesh, Trimesh, and Polyhedron. With these geometries 
> the Interactive renderer does his own culling (probably in 
> IRGeometry_Generate_Triangle_Flags).

I think I finally understand what you're talking about.  If a TriMesh 
does not specify explicit edges (like the TriMeshes in the Quesa logo) 
then backfaces can be culled.  But if a TriMesh does specify explicit 
edges, then the Wireframe and OpenGL renderers simply draw each edge as 
a line, with no culling.
-- 
   James W. Walker, Innoventive Software LLC
   <http://www.frameforge3d.com/>