Saving PyOpenGl figures as ps

[Frank]

Hi,

I installed pyopengl (opengl for python) on my linux box and
everything works fine. But now I want to save the generated images as,
e.g., ps or eps. How can I do that and how can I adjust the resolution
(if necessary)? This is probably simple but for some reason I can not
find out how to do that.

I appreciate every hint!

Thanks, Frank

[Vasily Sulatskov]

On Feb 12, 3:11 am, "Frank" <[e-mail]:

Hi,

I installed pyopengl (opengl for python) on my linux box and
everything works fine. But now I want to save the generated images as,
e.g., ps or eps. How can I do that and how can I adjust the resolution
(if necessary)? This is probably simple but for some reason I can not
find out how to do that.

I appreciate every hint!

Well, that's not that simple. Search the web, there are several
tutorials about PostScipt output.

[Mike C. Fletcher]

Frank wrote:

Hi,

I installed pyopengl (opengl for python) on my linux box and
everything works fine. But now I want to save the generated images as,
e.g., ps or eps. How can I do that and how can I adjust the resolution
(if necessary)? This is probably simple but for some reason I can not
find out how to do that.

I appreciate every hint!

Thanks, Frank

Hi Frank,

Take a look at the demos in OpenGL, particularly:

OpenGL-ctypes/OpenGL/Demo/GLUT/tom/conesave.py

which is a little GLUT application that renders into a GLUT windows and
then allows you to save it. That's raster operation though (i.e.
produces a PNG or JPG). Raster operations can only save a portion of
the screen as rendered, so if you want a higher resolution image you
need to make a larger window. If you want to get more advanced you can
try using an off-screen buffer (pbuffer or MESA) for the rendering,
which may (depending on implementation) allow for higher resolutions.

If you want a true vector graphic (PS, EPS) you'll need to use something
like GL2PS.

http://www.geuz.org/gl2ps/

HTH,
Mike

--
________________________________________________
Mike C. Fletcher
Designer, VR Plumber, Coder
http://www.vrplumber.com
http://blog.vrplumber.com