[vtkusers] vtkPointPicker Accuracy

[Christopher Bayley]

Hello Everyone;

Am am using an instance vtkPointPicker to obtain the x-y-z coordinates
within my data set and then drawing a dot at those coordinates.  The
problem is that the location where the cursor is pointing, is not always
the same as the location where the dot is displayed.  It is better when
I zoom right in before picking, but would like a more "universal
solution" to my picking problem.  There have been a number of other
posting regarding Picking Accuracy, none seem to be answered.

I am using VTK4.0 and RedHat 7.1.

Sincerely

Christopher Bayley
bayley at me.queensu.ca