Type Property

default

The system default timing function. Use this function to ensure that the timing of your animations matches that of most system animations.

Declaration

static let `default`: CAMediaTimingFunctionName

Discussion

This is a Bézier timing function with the control points (0.25,0.1) and (0.25,1.0).

Listing 1 shows how to create a basic animation object using default interpolation:

Listing 1

Creating a basic animation with a default timing function

 let verticalAnimation = CABasicAnimation(keyPath: "position.y")
 verticalAnimation.fromValue = 310
 verticalAnimation.toValue = 10
 verticalAnimation.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionDefault)

A layer animated with the animation created by the code above and with linearly interpolated horizontal movement would describe a path similar to Figure 1.

Figure 1

Path taken using default timing function

Path taken using default timing function

Beta Software

This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.

Learn more about using Apple's beta software