Sets a transform ramp to apply during a given time range.
SDKs
- iOS 4.0+
- macOS 10.7+
- Mac Catalyst 13.0+
- tvOS 9.0+
Framework
- AVFoundation
Declaration
func setTransformRamp(fromStart startTransform: CGAffineParameters
startTransformThe transform to be applied at the starting time of
time.Range endTransformThe transform to be applied at the end time of
time.Range timeRangeThe time range over which the value of the transform is interpolated between
startandTransform end.Transform
Discussion
During a transform ramp, the affine transform is interpolated between the values set at the ramp's start time and end time. Before the first specified time for which a transform is set, the affine transform is held constant at the value of identity; after the last time for which a transform is set, the affine transform is held constant at that last value.