AVVideoCompositionLayerInstruction.GetTransformRamp 方法

定义

获取包含指定 time的转换渐变。

[Foundation.Export("getTransformRampForTime:startTransform:endTransform:timeRange:")]
public virtual bool GetTransformRamp (CoreMedia.CMTime time, ref CoreGraphics.CGAffineTransform startTransform, ref CoreGraphics.CGAffineTransform endTransform, ref CoreMedia.CMTimeRange timeRange);
abstract member GetTransformRamp : CoreMedia.CMTime *  *  *  -> bool
override this.GetTransformRamp : CoreMedia.CMTime *  *  *  -> bool

参数

time
CMTime
startTransform
CGAffineTransform
endTransform
CGAffineTransform
timeRange
CMTimeRange

返回

属性

适用于