[vtkusers] volume rendering and animation

[Kenji Tsumura]

Hello,

I have 3D cardiac MRI data (4D including time domain). I can display volume rendering of the data using vtkSmartVolumeMapper.
When I tried to do animation (CINE) by  changing actors every time TimerEvent occurs, it is slow (using CPU or GPU).
Even when there is no user interaction, vtk seems to perform volume rendering every time actors change.
Are there any way for vtk to not perform volume rendering every time actors change by caching or something?
I was wondering if vtkMultiBlockDataSet or vtkTemporal*** can be utilized, but was unable to find a solution.

Thank you,

--
Kenji Tsumura

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