[vtkusers] Coordinate change in the viewport.

[Andrew J. P. Maclean]

How can I perform a coordinate change in the viewport?
In other words, I want to shift the origin from the lower left corner to
the upper-right corner in the viewport and reflect the axes i.e.:
  y
  ^
  | 
  |
  |
  O------>x

to:

 X<-------O
          |
          |
          |
          |
          V

So increasing x-values will run from right to left and increasing
y-values will run from top to bottom.

Thanks in advance.

Andrew


___________________________________________

Andrew J. P. Maclean

Centre for Autonomous Systems
The Rose Street Building J04
The University of Sydney  2006  NSW
AUSTRALIA

Ph: +61 2 9351 3283
Fax: +61 2 9351 7474

URL: http://www.cas.edu.au/
___________________________________________