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I wrote some code to scale images using Rails and Python running on OS X. Its horribly slow. So I tried Objective-C which wasn't too bad at all. ...

Objective-C Scaling an image with Quartz and Objective-C Creating a square thumbnail using Objective-C and Quartz ...

Here are some code to create a square thumbnail in Quartz and Objective-C #include <CoreServices/CoreServices.h> #include <Quartz/Quartz.h> int ...