[vtkusers] VTK slow to display 300 vtkArrowSource in real-time

Ken Martin ken.martin at kitware.com
Tue Oct 11 12:35:11 EDT 2016

If you are using the OpenGL2 rendering backend then vtkGlyph3DMapper is
probably a better way to do that. You provide the arrow source as one input
and then an array of positions and rotations as part of the other input.

On Tue, Oct 11, 2016 at 12:25 PM, Olivier Ameline <olivameline at gmail.com>

> Hello everyone,
> I am using VTK for real-time deformation of an elastic rod.
> To do this, I need to display simultaneously 300 vtkArrowSources every 100
> ms (10 Hz).
> Thus, I initialize the 300 vtkArrowSources, then I update them in a thread
> by translating and
> rotating their actors (with the functions setPosition and RotateWXYZ).
> The problem is that VTK takes apparently more than 100 ms to compute the
> updating, leading to
> a quite slow application.
> Is there a way to optimize the VTK rendering in real-time ?
> Thanks for your help.
> Best regards,
> Olivier Ameline
> Sorbonne Universités, UPMC University Paris 06
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Ken Martin PhD
Chairman & CFO
Kitware Inc.
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Clifton Park NY 12065
518 371 3971

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