public class CATempo : Tempo
CATempo uses a
CADisplayLink object to send out tempo updates that are synchronized with the refresh rate of the display on iOS.
CADisplayLinkobject is used to provide tempo updates.
This class provides several mechanisms for adjusting the update rate. See the
CADisplayLinkdocumentation for more information.
Do not call the
invalidatemethods on this object, as its state is handled by CATempo directly.
public var displayLink: CADisplayLink?
Initializes a new
CATempoobject and adds the internal
CADisplayLinkobject to the main run loop.
public override init()