| Re: Widgets and Animation Loops in IDL 5.0 [message #16465 is a reply to message #16387] |
Mon, 26 July 1999 00:00   |
drphys
Messages: 4
Registered: July 1999
|
Junior Member |
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thank you!
This all looks very goood. I will try implementing it later today.
Shawn
In article <MPG.120253cba46679d7989844@news.frii.com>,
davidf@dfanning.com (David Fanning) wrote:
> Shawn (drphys@my-deja.com) writes:
>
>> I am using IDL 5.0 on a DEC Alpha. I am animating a 3D plot of a
>> particle trajectory by incrementing the "az" variable and then
>> replotting in a loop. I decided to add widgets to control the speed
of
>> rotation and the angle about the x axis "ax". I have found this to
be
>> unworkable so far because once the code enters the loop the widgets
do
>> not issue events, so my event handlers do not get called. This was
>> easily fixed by using widget_control commands inside the loop and
using
>> sliders to control the speed and x angle, however, I can not find a
>> method to exit the loop, except for possibly adding a slider that
could
>> turn it off. The solution seemed to be a toggle button that could
be
>> examined using widget_control during the loop, but I have found no
way
>> to examine the state of the toggle button.
>
> You can look at my XMOVIE program for the proper way to
> do an animation in a widget program. It demonstrates how
> to write the program so that other events can be processed,
> so you can stop the animation, etc.
>
> http://www.dfanning.com/programs/xmovie.pro
>
>> Also while I am at it, I am
>> new to 3D plotting using "plots" to do a trajectory plot. There
seems
>> to be no way to get axis on the screen. I have tried the axis
command
>> and can only get either one axis, or a white blotch (this seems
random
>> as I have not touched that line of code for a while). So help on
any of
>> the above will be greatly appreciated.
>
> Here is an article that shows you exactly how
> to do a particle trajectory with axes:
>
> http://www.dfanning.com/tips/particle_3d.html
>
> Cheers,
>
> David
> --
> David Fanning, Ph.D.
> Fanning Software Consulting
> Phone: 970-221-0438 E-Mail: davidf@dfanning.com
> Coyote's Guide to IDL Programming: http://www.dfanning.com/
> Toll-Free IDL Book Orders: 1-888-461-0155
>
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