Re: [Visualpython-users] Mouse events with multiple windows

[Craig S. <cra...@ma...>]

After several hours of staring, I discovered a bug in my code which  
caused the interaction loop to quit prematurely. After fixing that,  
interaction with multiple windows works fine.

Sorry!

     Craig

On Jun 20, 2009, at 12:58 PM, Bruce Sherwood wrote:

> Puzzling and unfamiliar. Works fine for me on a MacBook with VPython
> 5.11, MacPython 2.6.2, OSX 10.5.7. There shouldn't be any difference  
> in
> this area between VPython 5.1 and 5.11.
>
> Could you please post a small test routine that fails for you? I
> successfully ran the following:
>
> from visual.graph import *
> scene.x = 0
> scene.y = 400
> scene.range = 4
> b = box()
> y = gcurve(color=color.cyan)
> pick = None
> while 1:
>    rate(50)
>    if scene.mouse.events:
>        m = scene.mouse.getevent()
>        if m.drag:
>            dragpos = m.pickpos
>            pick = m.pick
>        elif m.drop:
>            pick = None
>    if pick:
>        newpos = scene.mouse.pos
>        if newpos != dragpos:
>            pick.pos += newpos-dragpos
>            dragpos = newpos
>            y.plot(pos=(newpos.x,newpos.y))
>
> Independent of the graph issue, I did notice that on Windows I didn't
> need the "rate(50)" but I did on the Mac, where otherwise dragging was
> sluggish.
>
> Bruce Sherwood
>
> Craig A. Struble, Ph.D. wrote:
>> Hello,
>>
>> I'm trying to develop an interactive application with two windows:  
>> one
>> in which a user drags a sphere around; another which plots a graph
>> (using gdisplay and gcurve).
>>
>> When I use only the display, I can drag the sphere around fine, using
>> code similar to the toroid_drag.py example. When I add the graph
>> display, my first window doesn't receive left mouse button events
>> anymore and the sphere doesn't move. The order of window creation
>> doesn't change anything.
>>
>> How can I have two windows and interactivity? I'm using VPython 5.1,
>> MacPython 2.6.2, on OS X 10.5.7.
>>
>>    Craig
>> --
>> Craig A. Struble, Ph.D. | 369 Cudahy Hall  | Marquette University
>> Associate Professor of Computer Science    | (414)288-3783
>> Director, Master of Bioinformatics Program | (414)288-5472 (fax)
>> http://www.mscs.mu.edu/~cstruble | cra...@ma...
>>
>>
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--
Craig A. Struble, Ph.D. | 369 Cudahy Hall  | Marquette University
Associate Professor of Computer Science    | (414)288-3783
Director, Master of Bioinformatics Program | (414)288-5472 (fax)
http://www.mscs.mu.edu/~cstruble | cra...@ma...