# ray(through:) Determines the position and direction of a ray through the given point in the 2D space of the view. ``` @MainActor @preconcurrency func ray(through screenPoint: CGPoint) -> (origin: SIMD3, direction: SIMD3)? ``` ## Parameters `screenPoint` A point in the view’s coordinate system. ## Return Value A tuple that represents a ray in AR coordinates that goes from the camera origin through the specified point on the screen. --- 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)