<div dir="ltr">It sounds like you are using 300 arrow sources and 300 actors. This is expected to be very slow because of the overhead that each of the 300 actors brings.<br><br>The first thing I suggest you do is to use either the append polydata filter, or better still glyph filter, and better still the glyph mapper, to render all of them simultaneously.<br><br><br></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature">David E DeMarle<br>Kitware, Inc.<br>R&D Engineer<br>21 Corporate Drive<br>Clifton Park, NY 12065-8662<br>Phone: 518-881-4909</div></div>
<br><div class="gmail_quote">On Tue, Oct 11, 2016 at 12:25 PM, Olivier Ameline <span dir="ltr"><<a href="mailto:olivameline@gmail.com" target="_blank">olivameline@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello everyone,<br>
<br>
I am using VTK for real-time deformation of an elastic rod.<br>
<br>
To do this, I need to display simultaneously 300 vtkArrowSources every 100<br>
ms (10 Hz).<br>
Thus, I initialize the 300 vtkArrowSources, then I update them in a thread<br>
by translating and<br>
rotating their actors (with the functions setPosition and RotateWXYZ).<br>
<br>
The problem is that VTK takes apparently more than 100 ms to compute the<br>
updating, leading to<br>
a quite slow application.<br>
<br>
Is there a way to optimize the VTK rendering in real-time ?<br>
<br>
Thanks for your help.<br>
<br>
Best regards,<br>
<br>
Olivier Ameline<br>
Sorbonne Universités, UPMC University Paris 06<br>
<br>
<br>
<br>
<br>
--<br>
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