SLLayer Class Reference Inherits from CALayer Conforms to SLLayerProtocol Declared in SLLayer.hSLLayer.mm Overview Represents the base layer type for SLAnimations Other Methods – expressionControls Returns an array containing all associated expression control effects (i.e. 3D Point Control, Angle Control etc.) - (NSArray *)expressionControls Declared In SLPublicProtocols.h – evaluateExpressions Call this method to force evaluate any attached expressions. By default Squall evaluates expressions whenever the time of the animation changes. - (void)evaluateExpressions Discussion You can also call evaluateExpressions on the SLAnimation containing the layer to force expression evaluation on all layers. Declared In SLPublicProtocols.h Extension Methods expressionControls Returns an array containing all associated expression control effects (i.e. 3D Point Control, Angle Control etc.) @property (nonatomic, strong) NSArray *expressionControls Declared In SLPublicProtocols.h