Re: [Visualpython-users] deleting scenes

[Jamie R. <jam...@gm...>]

I believe setting scene.visible to false just makes the scene invisible, it
doesn't delete it,
unlike objects. If you'd like to reinitialize the scene then just delete all
visible objects:

for obj in scene.objects:



On Sat, Jun 27, 2009 at 5:29 PM, Guy K. Kloss <g....@ma...> wrote:

> Hi,
>
> as some may have noticed, I also run VPython with many things in batch
> mode.
> Unfortunately I've just hit a bump doing so. I introduced another layer for
> batching some computations/visualisations. So I'm wrapping my module and
> calling it repeatedly with changing parameters in a batch. Unfortunately
> when
> I'm doing that for me VPython "misbehaves". I cannot seem to find a way to
> discard a previous scene to create a new one. Whenever I just do it
> naively, I
> get this error:
>
> RuntimeError: Cannot change parameters of an active window
>
> As the new scene is being initialised with window title, size, ...
>
> I've already tried to retrieve the current scene with
>
>    my_scene = visual.display.get_selected()
>
> And then set its visibility to False:
>
>    my_scene.visible = False
>
> In this case the program just stalls and needs to be killed from another
> console. Or I try to delete the scene instance using:
>
>    del my_scene
>
> or
>
>    del visual.scene
>
> Which doesn't do anything as apparently visual.scene is a static module
> variable that cannot be discarded.
>
> Any ideas on how to make use of it in a sensible way without having to
> manually create new processes for each sample just to discard the scene?
>
> Guy
>
> --
> Guy K. Kloss
> Institute of Information and Mathematical Sciences
> Te Kura Pūtaiao o Mōhiohio me Pāngarau
> Massey University, Albany (North Shore City, Auckland)
> 473 State Highway 17, Gate 1, Mailroom, Quad B Building
> voice: +64 9 414-0800 ext. 9585   fax: +64 9 441-8181
> G....@ma... http://www.massey.ac.nz/~gkloss
>
>
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