Instance Method

cancelVideoZoomRamp()

Smoothly ends a zoom transition in progress.

Declaration

func cancelVideoZoomRamp()

Discussion

Calling this method is equivalent to calling ramp(toVideoZoomFactor:withRate:) with a rate of zero. If a zoom transition is in progress, the transition slows to a stop (instead of stopping abruptly).

Before calling this method, you must call lockForConfiguration() to acquire exclusive access to the device’s configuration properties. If you do not, calling this method raises an exception. When you are done configuring the device, call unlockForConfiguration() to release the lock and allow other devices to configure the settings.

See Also

Managing Zoom Settings

var videoZoomFactor: CGFloat

A value that controls the cropping and enlargement of images captured by the device.

func ramp(toVideoZoomFactor: CGFloat, withRate: Float)

Begins a smooth transition from the current zoom factor to another.

var isRampingVideoZoom: Bool

A Boolean value that indicates whether a zoom transition is in progress.

var minAvailableVideoZoomFactor: CGFloat

The minimum zoom factor allowed in the current capture configuration.

var maxAvailableVideoZoomFactor: CGFloat

The maximum zoom factor allowed in the current capture configuration.

var dualCameraSwitchOverVideoZoomFactor: CGFloat

The video zoom factor at which a dual camera device can automatically switch between cameras.