updating vtkimagedata in animation.

Hi everyone,

I am working on creating an animation of a tool and a workpiece
(vtkimagedata). Where the tool should move to a  location and turnoff the
voxels (create a hole) at that location. I want to animate a dynamic scene.

I am turning off voxels of workpiece (vtkimagedata) in " virtual void
Execute () "  function of  " class vtkTimerCallback"   but I am not able to
render the updated vtkimagedata.

basically I am not able to see the hole at those positions.

Any suggestions? directions? on how its done will be a great help.

Thanks,
Shadab

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