[Visualpython-users] Can the camera be reset after user zoom? Or else...

[Bill W. <ww...@la...>]

Hi everyone,
 
I'm new to the list, so first my gratitude to everyone involved in the
creation and enhancement of this package...where has it been all my life?
An outstanding and accessible framework with clear tutorials...except for
the following!
 
I've gathered from reading archives and the reference manual that direct
program control of the camera is not an option.  I have explored
scale/range, center, forward, and the mouse.camera attributes to where I
have a couple of clues.  But how can I do the following:
 
I want to establish a set of fixed views of my scene that can be called up
from controls (button or menu).  Ideally, I'd like to mouse my way into the
correct view, then save the camera position for recall.  I see the camera
position is modified, but when I zoom in by mousing there is no change to
"scale" , or center, or forward, or anything else I can set.  Am I running
up against a buried "manual_scale" that I can't read or write?
 
Even if I can only establish the right scale programmatically, that's fine.
But, if I allow the user to zoom and rotate around the scene, how can I go
back to a nominal camera distance to establish those fixed viewpoints that
will be designed to illustrate the underlying physics?  Hence the subject
line, is there such thing as a camera reset?  Can I get the effect by
toggling userzoom, or autoscale? Or do I have to just shut of userzoom
entirely?
 
Thanks in advance for your suggestions.
 
Bill Ward