[vtk-developers] The VTK class hierarchy in 3D

[Jeff Baumes]

Thanks to David Duke's new cone layout strategy implementation, the new 3D
dynamic label placer, and the recent representation/view rearchitecting, we
can now visualize trees in 3D with vtkGraphLayoutView which supports
selection/labelling/etc. The image was created by adding the following lines
to Views/Testing/Cxx/TestConeLayoutStrategy.cxx (which was constrained to
2D):

view->SetInteractionModeTo3D(); // Left mouse button causes 3D rotate
instead of zoom
view->SetLabelPlacementModeToLabelPlacer(); // needed since the default
dynamic 2D labeller cannot handle 3D

Jeff
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