[vtkusers] Seed point id identification

[Xiaopeng Yang]

Dear ITK and VTK members,

 

As we know that in the PickPixel example, the world position of a seed point
was picked by vtkPropPicker. However, I want to pick the cell id of that
point. Because, in ITK, cell id is used for setting seed point position. So
do you know how to pick the cell id?

 

Thank you very much,

Yang

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