On Sep 12, Keith Packard wrote:
 > I suspect I'll need to define this as a region covering the projection of 
 > the undefined areas in the source.  That will require inverting the 
 > transformation matrix,

You mentioned that you want to allow arbitrary 3X3 matrices, hence
there's no guarantee that you can invert the the transformation
matrix.

-Carl

-- 
Carl Worth                          USC Information Sciences Institute

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