# velocity(value:time:context:) Calculates the current velocity of the animation. ``` func velocity(value: V, time: TimeInterval, context: AnimationContext) -> V? where V : VectorArithmetic ``` ## Return Value The current velocity of the animation, or `nil` if the velocity isn’t available. --- 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)