# reflect(_:n:) Returns the reflection direction of an incident vector and a unit normal vector. ``` func reflect(_ x: SIMD2, n: SIMD2) -> SIMD2 ``` --- 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)