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I am a beginner in the world of Objective-C, and for my first iOS application, I thought I'd create one similar to Photo Booth. Now, I've done some tinkering with CABasicAnimation, and I was wondering whether there was one which makes the previewlayer, or the camera feed, twirl like "Twirl" does in Photo Booth. Any help would be appreciated. Thanks.

user2828375
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Those are not animations from CoreAnimation, they're filters. They are the CoreImage Filters (or CIFilters). You can read about them here.

user1118321
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