Weird vpython output

Paul Camp <[email protected]> Thu, 21 Nov 2013 17:11:47 -0500
Newsgroups gmane.comp.python.visualpython.user
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Sorry, replied to a previous email and forgot to change the subject line.


Dr. Paul J. Camp
Physics Department
Spelman College
Atlanta, GA   30314
404-270-5864

"The beauty of the cosmos derives not only from unity in variety
       but also from variety in unity"
                 -- Umberto Eco
                     The Name of the Rose



From:   Paul Camp <[email protected]>
To: 
Cc:     "visualpython-users-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org" 
<visualpython-users-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>
Date:   11/21/2013 05:10 PM
Subject:        Re: [Visualpython-users] a new Linux install solution for 
Visual  Python



I have a student running Vpython on a Mac who has run into a problem I've 
never seen before. She has an animation program that works. It creates 
objects, updates positions and such. However, the animation window itself 
is a featureless light gray box until the program is complete. Then the 
final state of the objects appears.

I've copied the program to my Windows VPython installation and it runs 
just fine. Well, the physics is wrong currently, but it does what it was 
told to do and I can see the full animation. 

Has anyone seen this behavior before? 


Dr. Paul J. Camp
Physics Department
Spelman College
Atlanta, GA   30314
404-270-5864

"The beauty of the cosmos derives not only from unity in variety
      but also from variety in unity"
                -- Umberto Eco
                    The Name of the Rose
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<font size=2 face="sans-serif">Sorry, replied to a previous email and
forgot to change the subject line.</font>
<br><font size=2 face="sans-serif"><br>
<br>
Dr. Paul J. Camp<br>
Physics Department<br>
Spelman College<br>
Atlanta, GA &nbsp; 30314<br>
404-270-5864<br>
<br>
&quot;The beauty of the cosmos derives not only from unity in variety<br>
 &nbsp; &nbsp; &nbsp; but also from variety in unity&quot;<br>
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; -- Umberto Eco<br>
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
The Name of the Rose</font>
<br>
<br>
<br>
<br><font size=1 color=#5f5f5f face="sans-serif">From: &nbsp; &nbsp; &nbsp;
&nbsp;</font><font size=1 face="sans-serif">Paul Camp &lt;[email protected]&gt;</font>
<br><font size=1 color=#5f5f5f face="sans-serif">To: &nbsp; &nbsp; &nbsp;
&nbsp;</font>
<br><font size=1 color=#5f5f5f face="sans-serif">Cc: &nbsp; &nbsp; &nbsp;
&nbsp;</font><font size=1 face="sans-serif">&quot;visualpython-users-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org&quot;
&lt;visualpython-users-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org&gt;</font>
<br><font size=1 color=#5f5f5f face="sans-serif">Date: &nbsp; &nbsp; &nbsp;
&nbsp;</font><font size=1 face="sans-serif">11/21/2013 05:10 PM</font>
<br><font size=1 color=#5f5f5f face="sans-serif">Subject: &nbsp; &nbsp;
&nbsp; &nbsp;</font><font size=1 face="sans-serif">Re: [Visualpython-users]
a new Linux install solution for Visual &nbsp; &nbsp; &nbsp; &nbsp;Python</font>
<br>
<hr noshade>
<br>
<br>
<br><font size=2 face="sans-serif">I have a student running Vpython on
a Mac who has run into a problem I've never seen before. She has an animation
program that works. It creates objects, updates positions and such. However,
the animation window itself is a featureless light gray box until the program
is complete. Then the final state of the objects appears.</font><font size=3><br>
</font><font size=2 face="sans-serif"><br>
I've copied the program to my Windows VPython installation and it runs
just fine. Well, the physics is wrong currently, but it does what it was
told to do and I can see the full animation.</font><font size=3> <br>
</font><font size=2 face="sans-serif"><br>
Has anyone seen this behavior before?</font><font size=3> </font><font size=2 face="sans-serif"><br>
<br>
<br>
Dr. Paul J. Camp<br>
Physics Department<br>
Spelman College<br>
Atlanta, GA &nbsp; 30314<br>
404-270-5864<br>
<br>
&quot;The beauty of the cosmos derives not only from unity in variety<br>
 &nbsp; &nbsp; &nbsp;but also from variety in unity&quot;<br>
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;-- Umberto Eco<br>
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;The
Name of the Rose</font><tt><font size=2>------------------------------------------------------------------------------<br>
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<br>
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</font></tt><a href="http://pubads.g.doubleclick.net/gampad/clk?id=63431311&amp;iu=/4140/ostg.clktrk"><tt><font size=2>http://pubads.g.doubleclick.net/gampad/clk?id=63431311&amp;iu=/4140/ostg.clktrk</font></tt></a><tt><font size=2>_______________________________________________<br>
Visualpython-users mailing list<br>
Visualpython-users-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org<br>
</font></tt><a href="https://lists.sourceforge.net/lists/listinfo/visualpython-users"><tt><font size=2>https://lists.sourceforge.net/lists/listinfo/visualpython-users</font></tt></a><tt><font size=2><br>
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