[vtkusers] cell to pixel mappig (urgently required)

[mahmoud ismail]

  Hi all 
   
  i display a 3d data object tht consists of group of cells
  and i want to know the pixel coordinate (x, y) appearing  in the screen
  and  corresponds to the 3D cell of th object 
   
   
  i.e i want to form a table 
   
  pixel (x1,y1)----------------------cell no i
  ........
  .....
  ......
  .....
  ......
  ....
  is it available

		
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