[Visualpython-users] Rendering problem - memory leak?

[Isaac W H. <isa...@om...>]

I am using vpython with the rigid-body simulation package pyode.  After
the simulation runs for about a minute, I begin to notice the objects
rendered in the gtkgl window begin to disappear, starting at the camera
position and progressing along the Z axis.  It's as if the program has
run out of memory and is beginning to overwrite the memory allocated to
the gtkgl image.  Rather than leaving a "black space" in the image, the
problem seems to create a "transparent hole" in the rendering (like a
cut-away view).

I am not sure this is a problem with vpython itself, because the problem
only progresses as I continually update the position and orientation of
the visual objects (in a loop).  Once the loop is over, the problem
ceases to get worse.

Has anybody experienced a similar problem?  Any words of wisdom?