[vtkusers] Help with vtkPicker

[Will Schroeder]

Hi Kevin-

If you use any of the pickers pay particular attention to the Tolerance 
instance variable. This controls the "sloppiness" of the pick. For example, 
point picker picks the closest point to the ray (ray passes through eye 
point and pick point) that lies within the tolerance. It's easy to pick a 
point closer to you than the one you want if the tolerance is too large. So 
tighten up the tolerance. Remember, too small and you have to pick the 
point you're interested in more precisely.

Will

At 03:29 PM 9/11/2002 -0400, Kevin Teich wrote:


>I am having difficulty with vtkPicker, particularly
>vtkPointPicker.