[vtkusers] Re:Drawing a Region of Interest with the mouse

[marcelo oliveira]

Hi Thomas and users.

VTK can't draw a region in the image, but you can get
the coordinate (X,Y) using FLTK, QT or another, and
then pass to VTK using a implicit function , see:
vtkPoints (insert points) and use vtkExtractGeometry
to separate.

I hope that is had help you. If you in doubt, please
contact me.

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