[vtkusers] about the cell picker in vtkInteractorStyleTrackballActor

[Yixun Liu]

Hi,

The vtkInteractorStyleTrackballActor uses Cell picker to pick the actor. It's very slow. I want to change the cell picker to propPicker. I cannot find the member method to change the cell picker to prop picker in vtkInteractorStyleTrackballActor. Is the only method to inherit from vtkInteractorStyleTrackballActor and change the picker in this child class?

Regards,

Yixun Liu
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