slerp

Automagicanimation

Wrap your messages to a UIView in +beginAnimations: and +endAnimations to automatically animate to the new state.

#import <UIKit/UIKit.h>

UIView *view = …

[UIView beginAnimations:nil];
[UIView setAnimationCurve:kUIAnimationCurveEaseInEaseOut];
[UIView setAnimationDuration:2.0];
// animate to the new frame in 2 seconds
[view setFrame:CGRectMake(0, 0, 100, 100)];
[UIView endAnimations];