[vtkusers] vtkSphereWidget::GetPolyData can't get up-to-date data

[Weiguang Guan]

Hi,

I find that vtkSphereWidget::GetPolyData can NOT get up-to-date polydata
after InteractionEvent or EndInteraction events are invoked. This is true 
at least for 4.4. Not sure whether nightly update has got rid of the 
problem or not.

Weiguang

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Weiguang Guan, Research Engineer
RHPCS, McMaster University
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