CAAnimation

[feidao90]

CAAnimation-base class:
timingFunction:指定动画，exa:"linear","easeIn","easeOut","easeInEaseOut","default"
removedOnCompletion: 动画完成，是否回复原本状态
defaultValueForKey: key-value

•  CGPoint                 NSValue
  

•  CGSize                  NSValue
  

•  CGRect                  NSValue
  

•  CGAffineTransform       NSValue
  

•  CATransform3D           NSValue  */