[gl2ps] occlusion culling issue

[Christophe Geuzaine]

matt hall wrote:
> hi,
> 
> i'm writing to ask a question about an issue that is cropping up in
> relation to occlusion culling with an openGL scene i'm interwsted in
> converting to EPS.
> 
> I'm rendering several 3d visualisations of surfaces (they look like
> crosses and blobs and things like that) which are manipulated by the user
> via and arcball rotation that is applied directly to the GL_MODELVIEW
> matrix via glMultMatrix(). When i apply a rotation, i find that the EPS
> output generated has culled the occlusion in the wrong plane. Is this to
> do with the way in which i am applying the rotation?
> 
> this problem vanishes if i turn of occulsion culling in gl2ps, but in this
> case the resulting files are quite large.
> 

Hi Matt - Could you send a little, stand-alone piece of code that 
reproduces the problem?

Thanks,

Christophe

-- 
Christophe Geuzaine
Applied and Computational Mathematics, Caltech
geuzaine at acm.caltech.edu - http://geuz.org