[gl2ps] additional 3D export formats?

[Christophe Geuzaine]

Hi Andreas - Indeed, in GL2PS we get the geometrical information from 
the feedback buffer, i.e., after projection. The x- and y-coordinates 
are screen coordinates and the z coordinate is the depth in the z-buffer.

You should be able to project the vertices back into model coordinates 
by using the OpenGL projection matrices. (You can use gluUnProject() to 
make the coding easy.)

Christophe

Andreas Micheler wrote:
> Hi,
> 
> I have now a basic .obj writing backend for gl2ps, but it has a bug:
> all output vertexes seem to be perspectively distorted, like they were 
> projected.
> Probably they are, but how to get around this problem?
> 
> Maybe someone can help?
> 
> Andreas
> 
> _______________________________________________
> gl2ps mailing list
> gl2ps at geuz.org
> http://www.geuz.org/mailman/listinfo/gl2ps
> 
> 


-- 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science
http://www.montefiore.ulg.ac.be/~geuzaine