RE: [Visualpython-users] Patch for limiting zoom in vpython

[David S. <dsc...@cm...>]

> > Could you please write a sentence or two of documentation? What does a
> > limit of 10.0 mean? Thanks.

> There is a parameter in the gldevice.cpp file named 'manual_scale'.
> There is no documentation for this parameter that I could find -- maybe
> the authors of VPython would like to put in a word. All my patch does is
> set a maximum limit for this parameter.

manual_scale isn't documented because it isn't exposed externally.  A
manual_scale of 10.0 means that scene.range is effectively *divided* by 10.
This is intuitively the same as zooming in by a factor of 10 from the
default provided by autoscale or by scene.range.

I think both minimum and maximum zoom limits are a good idea, but I'm not
sure if this is the right interface or not.  An example alternative would be
minimum and maximum ranges.  What does everyone think?

Dave