Hi, currently tinkering with a little shareplay app for the Vision Pro that allows people to facetime and shareplay to play with random 3d models (as well as move them around, which should sync the model positions for everyone in relative space). When the users start their facetime call, then open the immersive space to see the 3d models, the models load in properly in context of the group immersive space's coordinate system, and moving the models reflects the new positions real-time for each participant. The main issue comes if/when users use the digital crown to re-center their view. It appears to re-center the model and view, which is expected. However, it also seems to re-position the model/root entity to match the user's origin. Not sure if this is intentional or not, but this essentially makes it so that it "de-syncs" the model (so me moving the model next to someone does not reflect it 1:1 - it still moves properly, but the new "initial" position after re-centering makes it offset). Is there a potential solution or work-around for this such that re-centering the view doesn't de-sync the model/entity's position? Rough code for my RealityView component is below: RealityView { content, attachments in content.add(appModel.originEntity) appModel.originEntity.addChild(appModel.modelContainerEntity) appModel.setInitialModelPosition() configureGestures(forModel: appModel.modelContainerEntity) configureToolbarAttachment(content: content, attachments: attachments) } update: { content, _ in // I have modified the Apple provided gesture components to // send the app model the new positions/rotations // as well as broadcast the position/rotation to shareplay participants // When user re-centers view, it seems to also re-position the model // so that its origin is at the local user's origin, rather than // the original origin // Can we receive a notification that user has re-centered view? // Or some other work-around? appModel.modelContainerEntity.setPosition(appModel.modelState.position, relativeTo: nil) appModel.modelContainerEntity.setOrientation(.init(appModel.modelState.rotation3d), relativeTo: nil) } attachments: { Attachment(id: "customViewAttachment") { CustomView() } } .installGestures() Please let me know if anything wasn't clear or if more information is needed. Thanks!

if you check the code here, https://developer.apple.com/documentation/compositorservices/interacting-with-virtual-content-blended-with-passthrough var body: some Scene { ImmersiveSpace(id: Self.id) { CompositorLayer(configuration: ContentStageConfiguration()) { layerRenderer in let pathCollection: PathCollection do { pathCollection = try PathCollection(layerRenderer: layerRenderer) } catch { fatalError("Failed to create path collection \(error)") } let tintRenderer: TintRenderer do { tintRenderer = try TintRenderer(layerRenderer: layerRenderer) } catch { fatalError("Failed to create tint renderer \(error)") } Task(priority: .high) { @RendererActor in Task { @MainActor in appModel.pathCollection = pathCollection appModel.tintRenderer = tintRenderer } let renderer = try await Renderer(layerRenderer, appModel, pathCollection, tintRenderer) try await renderer.renderLoop() Task { @MainActor in appModel.pathCollection = nil appModel.tintRenderer = nil } } layerRenderer.onSpatialEvent = { pathCollection.addEvents(eventCollection: $0) } } } .immersionStyle(selection: .constant(appModel.immersionStyle), in: .mixed, .full) .upperLimbVisibility(appModel.upperLimbVisibility) the only way it's dealing with the error is fatalError. And don't think I can throw anything or return anything else? Is there a way I can gracefully handle this and show a message box in UI? I was hoping I could somehow trigger a failure and have https://developer.apple.com/documentation/swiftui/openimmersivespaceaction return fail. but couldn't find a nice way to do so. Let me know if you have ideas.

I’ve updated to iOS 18.1 public beta when it released and I got the problem when I was in public beta 4 to rc and the problem never fixed with the time limit when I ask for more time it never give me more time it’s just says waiting for parent approval I have this problem until ios 18.1 RC can u fix it I’m on iPhone 11 pro max

Hi! Im making project with Xcode and Reality Composer Pro. I'm trying to play timeline in Reality Composer Pro using codes without setting Behaviors on entities. And I also tried to send notification from Xcode to entities in Reality Composer Pro to play timeline(I already set "OnNotification" with Behaviors component). But it's not working well, and I couldn't figure out any problems. Are there solutions about it?

I'm writing code using ObjectAnchor for Vision OS. If an object is tracked, and then becomes not visible (either because the user looked in a different direction, or because the tracked object was occluded by another object), it is still tracked and you get anchor updates (e.g., object permanence). For my application, it would be very helpful if I could determine if the object is currently being observed, or it is not currently observed and just assumed to be in the same location as seen previously. ObjectAnchor.isTracked just seems to indicate whether it is getting anchor updates. I don't see anything in the ObjectAnchor or AnchorUpdate that would allow me to determine if the object is currently observed. Does anyone know of a way to do this, or would this be a feature request?

I have a VideoMaterial inside a RealityView and want to attach this to a DockingRegion inside an immersive environment. It appears that adding the VideoMaterial entity as a child of the docking region somewhat works, but there are no lighting effects (specular, diffuse) from the playing video. So essentially, how can you add a VideoMaterial to a DockingRegion and achieve the same reflections/behavior as using AVPlayerViewController. The latter is not an option as I need custom controls.

I am working on adding synchronized physical properties to EntityEquipment in TableTopKit, allowing seamless coordination during GroupActivities sessions between players. Current Approach and Limitations I have tried setting EntityEquipment's state to DieState and treating it as a TossableRepresentation object. This approach achieves basic physical properties synchronized across players. However, it has several limitations: No Collision Detection Between Dice: Multiple dice do not collide with each other. Shape Limitations: Custom shapes, like parallelepipeds, cannot be configured. Below is my existing code for Base Entity Equipment without physical properties: struct CubeWithPhysics: EntityEquipment { let id: ID let entity: Entity var initialState: BaseEquipmentState init(id: ID, entity: Entity) { self.id = id self.entity = entity initialState = .init(parentID: .tableID, pose: .init(position: .zero, rotation: .zero), entity: self.entity) } } I’d appreciate any guidance on the recommended approach to adding synchronized physical properties to EntityEquipment.

Is it possible to manage the behavior of timeline totally from code? I am exploring the Compose interactive 3D content in Reality Composer Pro sample project after seeing the related video, but the example shows only the use of Behaviors from RCP to activate timelines actions. I was wondering if it is possible to, somehow, retrieve some kind of timeline controller that allows me access to its informations just like the AnimationPlaybackController does with single animations. What I would like to achieve is being able to play/pause/retrieve timestamp from them in order to allow synchronization between different users on SharePlay

Regarding the Apple Vision Pro, is there a possibility to get a kind of rental device or leasing device from Apple? Background: I'm a fresh VisionOS dev. I have a low budget. I'm living in Japan. That means Vision Pro is roughly 150% the USD price. Regards

I created an Object & Hand Tracking app based on the sample code released here by Apple. https://developer.apple.com/documentation/visionos/exploring_object_tracking_with_arkit The app worked great and everything was fine, but I realized I was coding on Xcode 16 beta 3, so I installed the latest Xcode 16 from the App Store and tested by app there, and it completely crashed. No idea why. Here is the console dyld[1457]: Symbol not found: _$ss13withTaskGroup2of9returning9isolation4bodyq_xm_q_mScA_pSgYiq_ScGyxGzYaXEtYas8SendableRzr0_lF Referenced from: <3AF14FE4-0A5F-381C-9FC5-E2520728FC65> /private/var/containers/Bundle/Application/F74E88F2-874F-4AF4-9D9A-0EFB51C9B1BD/Hand Tracking.app/Hand Tracking.debug.dylib Expected in: <2F158065-9DC8-33D2-A4BF-CF0C8A32131B> /usr/lib/swift/libswift_Concurrency.dylib It was working perfectly fine on Xcode 16 beta 3, which makes me think it's an Xcode 16 issue, but no idea how to fix this. I also installed Xcode 16.2 beta (the newest beta) but same error. Please help if anyone knows what is wrong!

As the title states, this severely limits the flexibility of multi-window applications in creating a good user experience. Even effects like the ones shown below cannot be achieved.

Im asking myself we are the limits of RealityView. For example is it possible to place an entity on postion (x=800m,y=0,z=-900m) What happens if i walk from my (0,0,0) to this point, will i see the entity then ? Does someone know where are the limits ?

As mentioned in https://forums.developer.apple.com/forums/thread/756736?answerId=810096022#810096022 Is there any update about the full support to WebXR AR Module, which should enable immersive-ar mode? Are the features such as DOM overlays and WebGPU bindings on the roadmap? Is it possible to capture stereoscopic video either internally or externally or via airplay for debugging purposes? Thanks

I have an app with a visionOS target, and I want to add an iOS target. Both are based on RealityKit. I want to use a SpatialTapGesture to get the tap coordinate local to the entity tapped. In visionOS this is easy: SpatialTapGesture(coordinateSpace: .local) .targetedToAnyEntity() .onEnded { tap in let entity = tap.entity let localPoint3D = tap.convert(tap.location3D, from: .local, to: entity) // … } However, according to the docs, the convert function seems to exist only in visionOS, not in iOS. So how can I do this conversion in iOS? PS: This was already posted on StackOverflow without success. There, I tried to find a workaround, but I failed.

I am trying to create reflections and lighting in a fully virtual scene, and the way the documentation is written, the VirtualEnvironmentProbeComponent would be key. I cannot seem to get it to work, however. Has anyone got this figured out?

Hi, I’m working on a portfolio project for Vision Pro these days. I have two projects and each of projects are made with Unity and made with Xcode(using ARKit and RealityKit tracking feature). Is it able to combine these two projects in an app? For example, using the buttons made with SwiftUI in a Reality Composer Pro, jumping to a scene in Unity, and back from a scene in Unity to a scene in Reality Composer Pro in an app.

I am attempting to use the Barcode Detection enterprise API. I have the necessary entitlements and license file. I'm following the sample code online, and whenever I attempt to run the barcode detection using arKitSession.run I get the following error message: ar_barcode_detection_provider_t <0x300d82130>: Failed to run provider with transient error code: 1 It obviously isn't running the barcode detection, even though it's running in an immersive space in mixed mode. Any idea what might be going on?

I'm seeking detailed information about the rotation matrix of the iPhone's front-facing (selfie) camera when using ARKit. Specifically, I need to understand: The exact rotation matrix applied to the front-facing camera's output in ARKit. Whether this matrix is consistent across all iPhone models or if there are variations. If there are any transformations applied to align the camera's coordinate system with the device's orientation, particularly in portrait mode. How this rotation matrix relates to the transform property of `ARFrame.camera

I'm exploring face tracking and experimenting with ARKit's ARSCNFaceGeometry face mesh. I'm running a minimal demo application on the latest iPad Pro M4 11-inch, and I've provided the code below. I've heard that Apple still offers some of the best face tracking technology on consumer devices, largely because they are one of the few that combine depth and image data. Both a colleague and I tested the demo, and while it works as well or better than some other solutions we tried, we weren’t particularly impressed compared to Google’s MediaPipe or Nvidia’s Maxine, both of which rely solely on image data without depth. In our case, the ARKit face mesh doesn’t always align perfectly with the chin, and as the face rotates, in some areas vertices shift by up to a centimeter from their original position. This led us to question whether our demo app was using the TrueDepth sensor at all. To test this, we used a piece of cardboard with a small hole punched in it and taped it over the sensor array, leaving only the camera exposed. On the iOS lock screen, this prevents FaceID from working, but we still get a clear image from the camera. With the TrueDepth sensor blocked, the face mesh tracking in our app still functioned, but honestly, we couldn’t detect a significant difference in tracking performance with or without the TrueDepth sensor obscured. Could we be setting up the face tracking configuration incorrectly? Or has face tracking in newer versions of iOS become less dependent on the TrueDepth sensor? The controller: import SwiftUI import ARKit struct FaceTrackingView1: UIViewControllerRepresentable { func makeUIViewController(context: Context) -> FaceTrackingViewController1 { return FaceTrackingViewController1() } func updateUIViewController(_ uiViewController: FaceTrackingViewController1, context: Context) { } } class FaceTrackingViewController1: UIViewController, ARSCNViewDelegate, ARSessionDelegate { var sceneView: ARSCNView! override func viewDidLoad() { super.viewDidLoad() sceneView = ARSCNView(frame: view.bounds) sceneView.delegate = self sceneView.automaticallyUpdatesLighting = true view.addSubview(sceneView) let config = ARFaceTrackingConfiguration() sceneView.session.run(config) } override func viewWillDisappear(_ animated: Bool) { super.viewWillDisappear(animated) sceneView.session.pause() } func renderer(_ renderer: SCNSceneRenderer, nodeFor anchor: ARAnchor) -> SCNNode? { guard anchor is ARFaceAnchor else { return nil } let faceGeometry = ARSCNFaceGeometry(device: sceneView.device!)! let faceNode = SCNNode(geometry: faceGeometry) faceNode.geometry?.firstMaterial?.fillMode = .lines // Makes it a wireframe mesh return faceNode } func renderer(_ renderer: SCNSceneRenderer, didUpdate node: SCNNode, for anchor: ARAnchor) { guard let faceAnchor = anchor as? ARFaceAnchor, let faceGeometry = node.geometry as? ARSCNFaceGeometry else { return } faceGeometry.update(from: faceAnchor.geometry) } } The view: import SwiftUI struct ContentView: View { @State private var isFaceTrackingActive = false var body: some View { VStack { Text("Face mesh tracking demo") .font(.title) .padding() Button(action: { isFaceTrackingActive.toggle() }) { Text("Start Face Tracking") .font(.title2) .padding() .background(Color.blue) .foregroundColor(.white) .cornerRadius(10) } .fullScreenCover(isPresented: $isFaceTrackingActive) { FaceTrackingView1() } } .padding() } } #Preview { ContentView() }

Hi, I am trying to stream spatial video in realtime from my iPhone 16. I am able to record spatial video as a file output using: let videoDeviceOutput = AVCaptureMovieFileOutput() However, when I try to grab the raw sample buffer, it doesn't include any spatial information: let captureOutput = AVCaptureVideoDataOutput() //when init camera session.addOutput(captureOutput) captureOutput.setSampleBufferDelegate(self, queue: sessionQueue) //finally func captureOutput(_ output: AVCaptureOutput, didOutput sampleBuffer: CMSampleBuffer, from connection: AVCaptureConnection) { //use sample buffer (but no spatial data available here) } Is this how it's supposed to work or maybe I am missing something? this video: https://developer.apple.com/videos/play/wwdc2023/10071 gives us a clue towards setting up spatial streaming and I've got the backend all ready for 3D HLS streaming. Now I am only stuck at how to send the video stream to my server.