En Thu, 01 Feb 2007 13:46:37 -0300, Kamilche <[EMAIL PROTECTED]>  
escribió:

> I have a need to tile a bitmap across an arbitrary quadrilateral, and
> apply perspective to it.
> The Python Imaging Library (PIL) has an undocumented function that
> might work, but I can't figure out how to make it work. You're
> supposed to pass it 8 parameters, a b c d e f g h .

I don't know exactly how it's implemented, but the usual perspective  
transformation matrix has exactly 8 non zero parameters. Any text on  
computer graphics should cover it. My first hit on Google:  
http://bishopw.loni.ucla.edu/AIR5/2Dperspective.html

-- 
Gabriel Genellina

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