[PyOpenGL-Users] gluPickMatrix and glPointSize

[<pa...@cs...>]

I have a question about the effect of glPointSize and glLineWidth on 
picking. I have code that is able to return a hitlist for polygons on 
the screen for a one pixel picking box. When I try to pick points and 
lines, it also works fine. When I change the point size or the line 
width, however, the picking no longer works for points and lines 
unless I pick the exact center of the points and lines.

I could have sworn that picking is an operation that is applied after 
rasterization in the OpenGL pipline. Can anyone explain this behavior 
to me? Is there a work around?

Thanks,
Pete