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A comment on Apple Never Invented Anything. Parent comment

Re:Apple Never Invented Anything by ginko on Monday September 03, 2012 @08:42AM (#4470155)
I'm a computer graphics student with a little linear algebra background.

How you would implement pinch to zoom was immediately obvious to me after seeing it.

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Re:Apple Never Invented Anything by podperson on Monday September 03, 2012 @12:52PM (#4470985)
Funny then that rival implementations turn out to miss nuances Apple dealt with in its 1.0 implementation.

http://www.theverge.com/2012/8/30/3279628/apple-pinch-to-zoo...

I've implemented pinch-to-zoom in a bunch of different contexts, and I agree that it's easy to do a half-assed version. AFAIK that's not what Apple patented, and you're free to implement half-assed pinch-to-zoom to your heart's content (although you may be infringing an earlier patent).

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