[vtkusers] vtkCellPicker

[Scott J. Pearson]

I am using vtkCellPicker to display the value of a cell in an actor, given
x-y coordinates from a double-click. It works well under normal conditions.
However, when I stretch the image in a "zoom-to-fit" feature using
vtkProp3D's SetScale feature (changing the x factor while leaving the y and
z factors at 1.0f), I can "pick" coordinates OUTSIDE of the actor's display
region and still get results. The results would be accurate were the located
inside of the actor. I have traced this through the Pick and
IntersectWithLine procedures for vtkPicker and vtkGenericCell with no luck.
I don't know where else to trace. Any suggestions?

With thanks,
Scott

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Scott J. Pearson
Systems Programmer, Center for the Advanced Engineering of Fibers and Films
Clemson University     864.656.6389     sjpears at clemson.edu
10 Riggs Hall, Clemson, SC  29634
http://www.clemson.edu/caeff/