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    <p>I'm not 100% sure I understand the effect you're trying to achieve, but if you're referring to the images in "The Elements" app which you can spin around, then yeah, you probably don't want to be doing that with an UIScrollView.</p> <p>You can control the animation of content in Cocos2d. While you can set an animation to "just run", you can also manually set frames directly out of an animation, so if you can get smooth animation out of Cocos, you should be able to do it interactively. Look at the atlas sprite object - you can set the rect of an animation frame directly.</p> <p>However, again, I'm not sure this is the best approach, either, since that's a lot of frames for a texture. If you're going to be doing a lot of 3D photographic objects, you might consider looking into the video codecs and scrubbing along a video instead of trying to pack all the frames of a rotation animation into a series of textures.</p> <p>Just so you know, the guy who made "The Elements" wrote <a href="http://www.popsci.com/gadgets/article/2010-04/exclusive-making-elements-one-ipads-most-magical-apps" rel="nofollow noreferrer">an article about the development of the app</a>, and here's what he had to say about the 3D rotatable objects:</p> <blockquote> <p>"Creating fluidly spinning objects with the level of crystal clear photographic quality I demanded is actually harder than it might seem. A number of the obvious things the more technical of you might think of turn out not to work for reasons too complicated to get into here. Suffice to say that John designed a brilliant solution that uses the iPad's excellent graphics subsystem to lend a hand in ways it's not normally intended to."</p> </blockquote> <p>I don't know how exactly they achieved the 3D objects, but perhaps that "uses the iPad's excellent graphics subsystem" mention gives you a clue where to head from here...</p>
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    1. POElements/Wired Style 3D Animation
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    1. COThanks for the link to the article.
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