length(_:ofSegment:ofPath:at:)

Declaration

func length(_ length: UnsafeMutablePointer<Double>!, ofSegment segmentIndex: Int, ofPath pathID: FxPathID!, at time: CMTime) throws

Parameters

• length:

  Upon return, contains the length (in pixels) of the desired segment.

• segmentIndex:

  Which segment of the path you wish to evaluate the length of.

• pathID:

  The ID of the path whose segment you wish to evaluate.

• time:

  The time at which to evaluate the length of a segment of a path.

See Also

Getting Path Information

• numberOfPaths(at:)
• pathID(_:for:)
• name(_:ofPath:)
• isPath(_:open:at:)
• isPath(_:inverted:at:)
• style(_:ofPath:)
• length(_:ofPath:at:)
• number(ofVertices:inPath:at:)
• vertex(_:at:ofPath:at:)
• point(_:atPercentageOfDistance:alongPath:at:)
• point(_:atPercentageOfParameter:alongPath:at:)
• blendMode(_:ofPath:)
• pathGeometryInfo(_:forPath:at:)