objective c - How to create a spinnable image for iPhone/iPad? -

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i @ loss starting project. have object want user able flick finger , spin on iphone/ipad app creating, don't know how it. example of talking about, elements app allows "spin" element. thoughts?

the elements uses opengl present 3d model. suggest opengl if want similar effect.

http://maniacdev.com/2009/04/8-great-resources-for-learning-iphone-opengl-es/

in case of elements, it's not image you're spinning, it's 3d model.


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