[Pharo-project] simple point function seems strange

Wed, 07 Jul 2010 15:12:04 -0700 

Hi

(1...@20) rotateBy: #left centerAt: 0 @0
        returns 
                20@ -10

and my math tells me that this is a rotation to the right.

Am I correct?
Then why I'm wrong? screen coordinates vs. math coordinate?

Stef

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