| Inherits from | |
| Conforms to | |
| Framework | /System/Library/Frameworks/QuartzCore.framework |
| Availability | Available in iOS 2.0 and later. |
| Declared in | CAAnimation.h |
| Companion guides |
CAPropertyAnimation is an abstract subclass of CAAnimation for creating animations that manipulate the value of layer properties. The property is specified using a key path that is relative to the layer using the animation.
keyPath property
cumulative property
additive property
valueFunction property
For more about Objective-C properties, see “Properties” in The Objective-C Programming Language.
Determines if the value specified by the animation is added to the current render tree value to produce the new render tree value.
@property(getter=isAdditive) BOOL additive
If YES, the value specified by the animation will be added to the current render tree value of the property to produce the new render tree value. The addition function is type-dependent, e.g. for affine transforms the two matrices are concatenated. The default is NO.
CAAnimation.hDetermines if the value of the property is the value at the end of the previous repeat cycle, plus the value of the current repeat cycle.
@property(getter=isCumulative) BOOL cumulative
If YES, then the value of the property is the value at the end of the previous repeat cycle, plus the value of the current repeat cycle. If NO, the value of the property is simply the value calculated for the current repeat cycle. The default is NO.
CAAnimation.hSpecifies the key path the receiver animates.
@property(copy) NSString *keyPath
The key path is relative to the layer the receiver is attached to.
CAAnimation.hAn optional value function that is applied to interpolated values.
@property(retain) CAValueFunction *valueFunction
If the valueFunction property is not nil, the function is applied to the values interpolated by the animation as they are applied to the presentation layer. Defaults to nil.
CAAnimation.hCreates and returns an CAPropertyAnimation instance for the specified key path.
+ (id)animationWithKeyPath:(NSString *)keyPath
The key path of the property to be animated.
A new instance of CAPropertyAnimation with the key path set to keyPath.
CAAnimation.hLast updated: 2009-03-09