At http://cil.andrew.cmu.edu/projects/visual you can download the second
beta version of Python 2.2 for Windows (2.2b2, also available at
http://www.python.org) and a special test version of VPython for Python
2.2. This test version of VPython has the new zoom convention set
(scene.newzoom = 1), as will be the case for the regular version of VPython
starting in mid-December, which is also the time frame for the release of
the final version of Python 2.2. Zooming is done by depressing both left
and right buttons on a Windows mouse. The new setting of newzoom has not
been checked into CVS.
If you are just a bit adventuresome, we encourage you to try this out and
report any problems. It is not necessary to uninstall the Python 2.1
version. However, the desktop icon "IDLE for VPython" will be overwritten
with one that points to the 2.2 version.
One thing to look for is that we think there may be a mouse problem over
multiple runs, as though mouse status isn't being reset properly at the
start of each run. A symptom could be for example that on a second run,
moving the mouse with buttons up rotates the camera! We'd be grateful if
someone could find and report a reproducible case of this to make it easier
to test and fix.
Bruce Sherwood
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