Now available: Visual 5.1 for Python 2.5 for Mac (Intel and PowerPC).
There doesn't seem to be a version of numpy for Mac Python 2.6 yet,
which is needed by VPython. Work is proceeding on packaging 5.1 for
Linux; the requisite files are in CVS.
In the process of implementing right-button and middle-button mouse
events, similar to what was available for Visual 3, David Scherer and I
have run into some issues that concern us.
VPython 5.1 provides the basic mouse event functionality that was
present in Visual 3 for handling events from right and middle buttons
when userspin or userzoom is disabled, because we have been concerned
about supporting old programs. However, we have become aware that there
are limitations in this approach which could preclude some kinds of
mouse handling that people might want to do in the future. For example,
you might want to allow userspin with right drags yet also pick up right
clicks. For that reason it is conceivable that future developments in
this area might break existing programs, and therefore for maximum
forward compatibility it is prudent to use only left-button interactions
in new programs.
Bruce Sherwood
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