[vtkusers] convert physical point to mapped points

[Moti Freiman]

Hi,
I'm using the class: vtkCursor2D (added at the last cvs version of vtk).
Currently I want to set the cursor location to some physical point.
Therefore, i set the slice to be at the physical z slice of the requested
point, and now i should set the cursor focal point to the coordinates of the
mapped point on the window.
I did not find the way to convert my physical point to the mapped points on
window coordinates.
Any help will appreciate.
Thanks,
Moti
-- 
__
Moti Freiman, Ph.D Student.
Medical Image Processing and Computer-Assisted Surgery Laboratory.
School of Computer Science and Engineering.
The Hebrew University of Jerusalem Givat Ram, Jerusalem 91904, Israel
Phone: +(972)-2-658-5371 (laboratory)
WWW site: http://www.cs.huji.ac.il/~freiman
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