Realitykit Ar

Covers the essentials of building AR experiences on iOS with RealityKit and ARKit, from setting up RealityView in SwiftUI to loading USDZ models, anchoring entities to detected planes, and handling gestures. The source makes useful distinctions that save debugging time: entity hit tests versus ARKit raycasts, collision shapes for picking versus real-world surface detection, and when to use AnchorEntity targets. Targets Swift 6.3 and iOS 26+, which is forward-looking but the patterns apply to earlier versions. The ECS component examples and the make-update pattern for state changes are solid. Light on scene understanding details and the gesture section cuts off, but it gives you enough to place objects in space and let users interact with them without fumbling through Apple's scattered documentation.