Class: CAMediaTimingFunction
Overview
CAMediaTimingFunction represents one segment of a function that defines the pacing of an animation as a timing curve. The function maps an input time normalized to the range [0,1] to an output time also in the range [0,1].
Class Method Summary (collapse)
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+ functionWithControlPoints::::
Creates and returns a new instance of CAMediaTimingFunction timing function modeled as a cubic Bézier curve using the specified control points.
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+ functionWithName:
Creates and returns a new instance of CAMediaTimingFunction configured with the predefined timing function specified by name.
Instance Method Summary (collapse)
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- getControlPointAtIndex:values:
Returns the control point for the specified index.
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- initWithControlPoints::::
Returns an initialized timing function modeled as a cubic Bézier curve using the specified control points.
Methods inherited from NSObject
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Constructor Details
This class inherits a constructor from NSObject
Dynamic Method Handling
This class handles dynamic methods through the method_missing method in the class NSObject
Class Method Details
+ (Object) functionWithControlPoints(c1x, :c1y, :c2x, :c2y)
Creates and returns a new instance of CAMediaTimingFunction timing function modeled as a cubic Bézier curve using the specified control points. The end points of the Bézier curve are automatically set to (0.0,0.0) and (1.0,1.0). The control points defining the Bézier curve are: [(0.0,0.0), (c1x,c1y), (c2x,c2y), (1.0,1.0)].
+ (Object) functionWithName(name)
Creates and returns a new instance of CAMediaTimingFunction configured with the predefined timing function specified by name.
Instance Method Details
- (Object) getControlPointAtIndex(index, values:ptr)
Returns the control point for the specified index. The value of index must be between 0 and 3.
- (Object) initWithControlPoints(c1x, :c1y, :c2x, :c2y)
Returns an initialized timing function modeled as a cubic Bézier curve using the specified control points. The end points of the Bézier curve are automatically set to (0.0,0.0) and (1.0,1.0). The control points defining the Bézier curve are: [(0.0,0.0), (c1x,c1y), (c2x,c2y), (1.0,1.0)].