UIView "suck" animation

Question

I'd like to use the UIView "sucking" transition (view is "sucked" into a point) referenced here:

http://iphonedevwiki.net/index.php/UIViewAnimationState#Using_suckEffect

The method above, however, uses private APIs, which makes it next to useless for an App Store app. How can I recreate a similar effect without relying on private APIs? I'm guessing the answer has to do with OpenGL, although I have zero experience there.

Answer 1

have you checkked out the cocos2d framework. it's an objective c wrapper for openGL and it's done really well. you can check out their demo video which shows all the transition types that the library supports.