Re: [Visualpython-users] autoscale

[Jonathan B. <jbr...@ea...>]

On Thu, 2004-09-09 at 11:37, Aaron Titus wrote:
> I've noticed that in the orbit demo program, the autoscale causes the 
> scene to scale even when it's not needed. For example, the paths of the 
> orbits are closed, so once an orbit it completed, it should need to 
> zoom in or out. However, it does anyway.

It does that because the "bounding box" that Visual uses to determine
the autoscaling is slightly larger whenever the outer sphere is on the
far left, right, near, or far edge of the scene.  We have been thinking
about an appropriate means of controlling this kind of situation, but
haven't settled down on a solution, yet.

> Besides setting the size of the window and turning off autoscaling, is 
> there a way to make the window not zoom in and out as the stars orbit?

In the meantime, you can try setting the undocumented parameter
display.minscale to something like 0.9.  Feel free to experiment with
it, but I think it is a relic from some internal testing before my
time.  It's behavior will change in the future (maybe even replaced)
with something more suitable for public consumption.  You probably
shouldn't set it outside the range (0,1].

-Jonathan