[vtk-developers] HOW DO YOU ... aggregate vtk Widget

[Dean Inglis]

Hi Kent,

how odd that we seem to be working on the same problems!
Our solution for 3D image based contour work was to take 
vtkContourRepresentation and vtkOrientedGlyphContourRepresentation, 
and distill them down to one simple contour class. You can alter 
vtkContourRepresentation to be a hybrid vtkProp but keep the 
paradigm of nodes, interpolators and point placers.  With 
multi-slice images you can use stl containers for contour 
management: std::list for within slices and std::vector for between 
slices.  You can do undo/redo contour editing by interfacing 
vtkContourWidget to take the nodes of a contour class as input 
for user interaction, or vtkAffineWidget for affine transforms 
(translation, rotation, scaling).

HTH,
Dean