JBCroppableView is an open source project created by Javier Berlana that offers drag/drop image cropping.
The screenshot on the left shows an image and the UIView that manages cropping, including the points that define the area to crop. The right screenhot shows how the image looks after a crop.
The points that define the area to crop are stored in an NSArray as CGPoints. The result of cropping is a new UIImageView. The project does support ARC.
You can download JBCroppableView from github.
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