[gl2ps] help for GL2PS

[Christophe Geuzaine]

> On 13 Feb 2015, at 09:53, Xiangguo Li <xiangguoli at gmail.com> wrote:
> 
> Dear Geuzaine,
> 
> Thank you for your valuable GL2PS tool, which I need to capture the OpenGL window and I have searched for a long time. 
> 
> I used the following sample code in "gl2psTest.c": 
> writefile(format, GL2PS_SIMPLE_SORT, opt, 2, "outSimpleShading2", ext);
> and I found the saved eps file was too too big. Therefore, I want to know which parameters can control the file size?
> 

You can use

- GL2PS_OCCLUSION_CULL, which will remove the invisible primitives
- GL2PS_COMPRESS, which will compress the output using gzip

Other than that, GL2PS outputs the actual polygons that make up the scene; so the file will always be large if you have many polygons.

> Thank you!
> 
> Yours Sincerely,
> 
> Xiangguo Li
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-- 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 
http://www.montefiore.ulg.ac.be/~geuzaine