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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Perfect!!!!<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Thanks.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Gerrick<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> David Cole
[mailto:david.cole@kitware.com] <br>
<b>Sent:</b> Tuesday, December 02, 2008 10:15 AM<br>
<b>To:</b> Gerrick Bivins<br>
<b>Cc:</b> vtkusers@vtk.org<br>
<b>Subject:</b> Re: [vtkusers] vtkPlaybackWidget doesn't "play"<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>You need to call vtkRenderWindow::Render after each change
to force a render before the animation continues... Otherwise, there will just
be a pending paint message waiting to be processed when your animation is over
and you are again allowing the message loop to process paint messages.<o:p></o:p></p>
<div>
<p class=MsoNormal><o:p> </o:p></p>
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<div>
<p class=MsoNormal>Call vtkRenderWindow::Render, not vtkRenderer::Render...<o:p></o:p></p>
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<div>
<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>HTH,<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>David<o:p></o:p></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p>
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<p class=MsoNormal>On Tue, Dec 2, 2008 at 11:10 AM, Gerrick Bivins <<a
href="mailto:gbivins@objectreservoir.com">gbivins@objectreservoir.com</a>>
wrote:<o:p></o:p></p>
<div>
<div>
<p><span style='font-size:11.0pt;color:#1F497D'>Hi David,</span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'>I've tried calling Render via
vtkPlaybackRepresenation::GetRenderer()->Render() but that had no effect.</span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'>I've subclassed
vtkPlaybackRepresentation and overridden Play as follows:</span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";
color:blue'> virtual</span><span style='font-size:10.0pt;
font-family:"Courier New"'> <span style='color:blue'>void</span> Play()</span><o:p></o:p></p>
<p style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'>
{</span><o:p></o:p></p>
<p style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'>
_playing = <span style='color:blue'>true</span>;</span><o:p></o:p></p>
<p style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'>
<span style='color:green'>//this->_playThread.join();</span></span><o:p></o:p></p>
<p style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'>
<span style='color:blue'>this</span>->PlayThread();</span><o:p></o:p></p>
<p style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'>
</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Courier New"'>
}</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Courier New"'> </span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'>With PlayThread() as follows
(which I'd like eventually move functionality into a thread so I can pause it):</span><o:p></o:p></p>
<p style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";
color:blue'> void</span><span style='font-size:
10.0pt;font-family:"Courier New"'> PlayThread()</span><o:p></o:p></p>
<p style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'>
{</span><o:p></o:p></p>
<p style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'>
<span style='color:blue'>while</span>(_currentFrame < NumberOfFrames
&& _playing)</span><o:p></o:p></p>
<p style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'>
{</span><o:p></o:p></p>
<p style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'>
<span style='color:green'>//this->_pbw->InvokeEvent(vtkCommand::LeftButtonPressEvent,NULL);</span></span><o:p></o:p></p>
<p style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'>
std::cout<<_currentFrame<<std::endl;</span><o:p></o:p></p>
<p style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'>
<span style='color:blue'>this</span>->UpdateCurrentFrame(1);</span><o:p></o:p></p>
<p style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'>
<span style='color:blue'>this</span>->GetRenderer()->Render();</span><o:p></o:p></p>
<p style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'>
}</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Courier New"'>
}</span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'>UpdateCurrentFrame calculates
the next frame depending on direction and triggers the pipeline update.</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Courier New"'> </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Courier New"'>Gerrick</span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p><b><span style='font-size:10.0pt'>From:</span></b><span style='font-size:
10.0pt'> David Cole [mailto:<a href="mailto:david.cole@kitware.com"
target="_blank">david.cole@kitware.com</a>] <br>
<b>Sent:</b> Tuesday, December 02, 2008 9:48 AM<br>
<b>To:</b> Gerrick Bivins<br>
<b>Cc:</b> <a href="mailto:vtkusers@vtk.org" target="_blank">vtkusers@vtk.org</a><br>
<b>Subject:</b> Re: [vtkusers] vtkPlaybackWidget doesn't "play"</span><o:p></o:p></p>
</div>
<div>
<div>
<p> <o:p></o:p></p>
<p>Are you calling Render from your play callback after each step of the animation...?<o:p></o:p></p>
<div>
<p style='margin-bottom:12.0pt'> <o:p></o:p></p>
<div>
<p>On Tue, Dec 2, 2008 at 10:33 AM, Gerrick Bivins <<a
href="mailto:gbivins@objectreservoir.com" target="_blank">gbivins@objectreservoir.com</a>>
wrote:<o:p></o:p></p>
<p><br>
Hello,<br>
I'm trying to use the vtkPlaybackWidget to control an animation sequence.<br>
All the actions work as expected except for the "play" button.
I've<br>
overridden the Play callback function to loop over my animation and update<br>
for each step but the render window is only updated at the end of sequence.<br>
Using the "Forward" and "Backward" step buttons work as
expected. Does<br>
anyone have any suggestions on how to get the render to update using the<br>
"Play" button?<br>
Thanks in advance,<br>
Gerrick<br>
--<br>
View this message in context: <a
href="http://www.nabble.com/vtkPlaybackWidget-doesn%27t-%22play%22-tp20794191p20794191.html"
target="_blank">http://www.nabble.com/vtkPlaybackWidget-doesn%27t-%22play%22-tp20794191p20794191.html</a><br>
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<br>
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