# length(_:ofPath:at:) Provides you the length of the entire path. ``` func length(_ length: UnsafeMutablePointer!, ofPath pathID: FxPathID!, at time: CMTime) throws ``` ## Parameters `length` Upon return, contains the length of the path. `pathID` The ID of the path to query. `time` The time at which you wish to find the length of the path. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)