[vtkusers] VTK 2D Control Points example

[Gishara Indeewarie]

Dear all,

I want to do a 2d contour with some control points in vtk.
I have found the example below:
http://www.cmake.org/Wiki/VTK/Examples/Cxx/Widgets/ContourWidget

This is good, but the problem is I only want a 2D one.
Is there any way to do something like this for 2d data?
Thanks in advance.
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