"Scott David Daniels" <[EMAIL PROTECTED]> ha scritto nel messaggio 
news:[EMAIL PROTECTED]
>>  x = x * cos - y * sin - xRel * cos + yRel * sin + xRel
>>  y = x * sin + y * cos - xRel * sin - yRel * cos + yRel
>>  self.coords = (x,y)
>
> Your equation for y uses the new x, not the old x.

De hi hi ho. I must sleep some more hours at night... ;-)
>Be more free with names.

Well, I often report book formulas, and forget renaming variables to more 
comprehensive language. Thank you for your help.

Max 


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