[vtkusers] Picking problem

[Ming Xie]

Hi All,

I have an airplane carrying cargoes. When I place my camera with
Elevation(45) and Azimuth(-45), many of the cargo objects are not pickable.
I have tried vtkPicker and vtkCellPicker, none of them worked (I only need
to pick an actor). vtkCellPicker was even worse. If the camera is placed on
top of the airplane, I can pick any of the objects with no problem. Anybody
knows how to solve the problem?

Thanks,

Ming