[vtkusers] CPU usage when moving a vtkActor

[Najzero]

Hi Mathieu,

I may be wrong, but I believe all you need to do is using a different
mapper.

I'd suggest using the vtkSmartVolumeMapper.

http://www.vtk.org/doc/nightly/html/classvtkSmartVolumeMapper.html 

that class-definition links to a lengthy cxx example on git, but I prefer
the "old" one on
http://www.vtk.org/Wiki/VTK/Examples/Cxx/VolumeRendering/SmartVolumeMapper

HTH
Adrian



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