Selection in an application over VTK

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Use Case Description

  1. I have two windows in the application. A VTK (QVTK) window with a vtkDataset, and a QTreeView.
  2. I want to select something in my VTK view and have the selection show up in my Qt View
  3. I want to select something in my Qt view and have the selection show up in my VTK View
  4. I want to select something in my Qt view and create a new vtk dataset

So I will need a filter that takes a selectionSet and a vtkDataset and produces a vtkDataset. This filter will be like vtkThreshold. Also it will need to have an In/Out ivar... meaning that I may want the selected items or everything but the selected items to come out as output.

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