RE: [Pyopengl-users] patch to trackball.py

[Tarn W. B. <twb...@ma...>]

| 1. trackball.py
|
| I have been playing around with trackballing under C, and I find that
| the trackball.py is horribly broken. It makes me wonder whether it was
| included there by accident. After spending quite a bit of time looking
| at it, I found that there were a fair number of bugs in it, which I have
| fixed up.

No, quaternion was a late addition and I obviously didn't look at trackball
close enough.

I applied some of your changes, but not all.  One thing that worries me is
the line

phi = 2.0 * math.asin(t)

in your source.  This is not in any CVS version.  Which
distribution/platform did you install?

In the future please submit patches via the Patch Tracker at the sourceforge
page.  Also you can always check the current status of code to see if a bug
has already been fixed using the CVS browser.

| 2. Vertex Arrays in PyOpenGL 2.0.44
|
| Are the working ? I just get seg faults everytime I try glDrawElement()
| and others ? Maybe it's just me :)

Yep.  Look at the documentation.  The array functions have slightly
difference prototypes that the spec so this might be the cause.

thanks,
Tarn Weisner Burton