Integrate iOS device camera and motion features to produce augmented reality experiences in your app or game using ARKit.

ARKit Documentation

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Vision Pro - Throw object by hand
Hello All, I'm desperate to found a solution and I need your help please. I've create a simple cube in Vision OS. I can get it by hand (close my hand on it) and move it pretty where I want. But, I would like to throw it (exemple like a basket ball). Not push it, I want to have it in hand and throw it away of me with a velocity and direction = my hand move (and finger opened to release it). Please put me on the wait to do that. Cheers and thanks Mathis
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Aug ’24
queryDeviceAnchor sometimes stops working in func update(context: SceneUpdateContext) (visionOS)
Hi, I was wondering during developing for visionOS why when I try to use queryDeviceAnchor() with WorldTrackingProvider() after opening the immersive space in the update(context: SceneUpdateContext) function, it initially seems to provide the DeviceAnchor data every frame but stops at some point (about 5-10 seconds after pressing the Button which opens the immersive space) and then stops updating constantly and only updates somehow randomly if I move my head abruptly to the left, right, etc. Somehow, the tracking doesn't seem to work as it should directly on the AVP device. Any help would be greatly appreciated! See my code down below: ContentView.swift import SwiftUI struct ContentView: View { @Environment(\.openImmersiveSpace) private var openImmersiveSpace @Environment(\.scenePhase) private var scenePhase var body: some View { VStack { Text("Head Tracking Prototype") .font(.largeTitle) Button("Start Head Tracking") { Task { await openImmersiveSpace(id: "appSpace") } } } .onChange(of: scenePhase) {_, newScenePhase in switch newScenePhase { case .active: print("...") case .inactive: print("...") case .background: break @unknown default: print("...") } } } } HeadTrackingApp.swift import SwiftUI @main struct HeadTrackingApp: App { init() { HeadTrackingSystem.registerSystem() } var body: some Scene { WindowGroup { ContentView() } ImmersiveSpace(id: "appSpace") { } } } HeadTrackingSystem.swift import SwiftUI import ARKit import RealityKit class HeadTrackingSystem: System { let arKitSession = ARKitSession() let worldTrackingProvider = WorldTrackingProvider() required public init(scene: RealityKit.Scene) { setUpSession() } func setUpSession() { Task { do { try await arKitSession.run([worldTrackingProvider]) } catch { print("Error: \(error)") } } } public func update(context: SceneUpdateContext) { guard worldTrackingProvider.state == .running else { return } let avp = worldTrackingProvider.queryDeviceAnchor(atTimestamp: CACurrentMediaTime()) print(avp!) }
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Aug ’24
WorldTrackingProvider state is paused?
Hey guys, I was wondering if anyone could help me. I'm currently trying to run an ARKitSession() with a WorldTrackingProvider() that makes use of DeviceAnchor. In the simulator everything seems to work fine and the WorldTrackingProvider runs, but if I'm trying to run the app on my AVP, the WorldTrackingProvider pauses after the initialization. I'm new to Apple development and I would be thankful for any helpful input! Below my current code: HeadTrackingApp.swift import SwiftUI @main struct HeadTrackingApp: App { init() { HeadTrackingSystem.registerSystem() } var body: some Scene { WindowGroup { ContentView() } } } ContentView.swift import SwiftUI struct ContentView: View { var body: some View { VStack { Text("Head Tracking Prototype") .font(.largeTitle) } } } HeadTrackingSystem.swift import SwiftUI import ARKit import RealityKit class HeadTrackingSystem: System { let arKitSession = ARKitSession() let worldTrackingProvider = WorldTrackingProvider() var avp: DeviceAnchor? required public init(scene: RealityKit.Scene) { setUpSession() } func setUpSession() { Task { do { print("Starting ARKit session...") try await arKitSession.run([worldTrackingProvider]) print("Initial World Tracking Provider State: \(worldTrackingProvider.state)") self.avp = worldTrackingProvider.queryDeviceAnchor(atTimestamp: CACurrentMediaTime()) if let avp = getAVPPositionOrientation() { print("AVP data: \(avp)") } else { print("No AVP position and orientation available.") } } catch { print("Error: \(error)") } } } func getAVPPositionOrientation() -> DeviceAnchor? { return avp } }
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Aug ’24
Can we use the ARKit CameraFrameProvider API for prototyping
Its my understanding that to use the CameraFrameProvider, which provides access to the Apple Vision Pro front facing camera feed the enterprise main camera access "com.apple.developer.arkit.main-camera-access.allow" entitlement is required. Is there a method to prototype apps on a that use the CameraFrameProvider running on an apple vision pro that has developer mode enable without having the "com.apple.developer.arkit.main-camera-access.allow" entitlement?
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Jul ’24
Image Tracking in Vision OS2 beta, no removed event?
When I using Image Tracking in Vision OS2 beta, add an AVPlayer to play one MP4 file when tracking some picture. I Can't get removed event in "for await update in imageInfo.anchorUpdates {" code, so I can't stop or remove the palyer when Image disappear. Then I used updated event and check "if anchor.isTracked" to remove or add the player again, and It worked. Now, if I dont move my head, show or hide the picture, It worked like assume. But if the picture dont move, and I move my head away, I cant get updated event, and the player still play even I cant see it. No updated event, and no removed event for me. Is this a bug?
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Jul ’24
Getting main camera frame using CameraFrameProvider
Hello, I am trying to use the new Enterprise API to capture main camera frames using the CameraFrameProvider. Until now, I could not make it work. I followed the sample code provided in this thread (literally copy past it): https://forums.developer.apple.com/forums/thread/758364. When I run the application on the Vision Pro, no frame is captured. I get a message in the XCode's console that no entitlement is found. However, the entitlement is created and the license file is also in the project. Besides, all authorization keys are added in the plist file. What I am missing? How to know if the license file is wrong? Thank you.
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Jul ’24
How to control continuous movement by long pressing on the GameController
struct GameSystem: System { static let rootQuery = EntityQuery(where: .has(GameMoveComponent.self) ) init(scene: RealityKit.Scene) { } func update(context: SceneUpdateContext) { let root = context.scene.performQuery(Self.rootQuery) for entity in root{ let game = entity.components[GameMoveComponent.self]! if let xMove = game.game.gc?.extendedGamepad?.dpad.xAxis.value , let yMove = game.game.gc?.extendedGamepad?.dpad.yAxis.value { print("x:\(xMove),y:\(yMove)") let x = entity.transform.translation.x + xMove * 0.01 let y = entity.transform.translation.z - yMove * 0.01 entity.transform.translation = [x , entity.transform.translation.y , y] } } } } I want to use the game controller's direction keys to control the continuous movement of Entity in visionOS. When I added a query for handle button presses in the ECS System, I found that the update interface was not called at a frequency of 30 frames per second. Instead, it executes once when I press or release the key. Is this what is the reason? I want to keep moving by holding down the controller button, is there a better solution? I hope this moving process will be smooth and not stuck.
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Jul ’24
ArKit to capture data
ARKit to capture data What we want to do : use the ARKit to capture data around an object (pictures). Is there a way to : Increase the number of picture captured by default (120) to a higher number without increase the time required to capture data ? We managed to increase the number of pictures to 1000, but the data capture now lasts 20minutes, which is too long. Is there a way to capture a video instead of pictures ? Capture IMU data : how can we use the ARKit to capture IMU data around an object ?
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Jul ’24
RealityView not displaying content
I'm playing with visionOS and trying to get a usdz file to load in a RealityView. It works fine if I use a Model3D but if I use a RealityView nothing shows up. I'm just using the fender_stratocaster asset right off the apple web site so it seems like it should work. This is the code: RealityView { content in if let sphereEntity = try? await Entity(named: "fender_stratocaster") { content.add(sphereEntity) sphereEntity.position = [0,0,0] sphereEntity.transform.scale = [scale, scale, scale] let _ = print(sphereEntity) } } update: { content in if let sphereEntity = content.entities.first { sphereEntity.transform.scale = [scale, scale, scale] } Any clues as to why this is not showing would be appreciated.
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Jul ’24
ARKit tracked images, best practices
I'm developing an augmented images app using ARKit. The images themselves are sourced online. The app is mostly done and working fine. However, I download the images the app will be tracking every time the app starts up. I'd like to avoid this by perhaps downloading the images and storing them to the device. My concern is that as the number of images grow, the app would download too many images to the device. I'd like some thoughts on how to best approach this. For example, should I download and store some of the images in CoreData, or perhaps not store them at all?
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Jul ’24
I referred to the Enhanced Sensor Access code from WWDC24 to display the main camera of Vision Pro in the application interface, but it is not displaying
this is my code: import Foundation import ARKit import SwiftUI class CameraViewModel: ObservableObject { private var arKitSession = ARKitSession() @Published var capturedImage: UIImage? private var pixelBuffer: CVPixelBuffer? private var cameraAccessAuthorizationStatus = ARKitSession.AuthorizationStatus.notDetermined func startSession() { guard CameraFrameProvider.isSupported else { print("Device does not support main camera") return } Task { await requestCameraAccess() guard cameraAccessAuthorizationStatus == .allowed else { print("User did not authorize camera access") return } let formats = CameraVideoFormat.supportedVideoFormats(for: .main, cameraPositions: [.left]) let cameraFrameProvider = CameraFrameProvider() print("Requesting camera authorization...") let authorizationResult = await arKitSession.requestAuthorization(for: [.cameraAccess]) cameraAccessAuthorizationStatus = authorizationResult[.cameraAccess] ?? .notDetermined guard cameraAccessAuthorizationStatus == .allowed else { print("Camera data access authorization failed") return } print("Camera authorization successful, starting ARKit session...") do { try await arKitSession.run([cameraFrameProvider]) print("ARKit session is running") guard let cameraFrameUpdates = cameraFrameProvider.cameraFrameUpdates(for: formats[0]) else { print("Unable to get camera frame updates") return } print("Successfully got camera frame updates") for await cameraFrame in cameraFrameUpdates { guard let mainCameraSample = cameraFrame.sample(for: .left) else { print("Unable to get main camera sample") continue } print("Successfully got main camera sample") self.pixelBuffer = mainCameraSample.pixelBuffer } DispatchQueue.main.async { self.capturedImage = self.convertToUIImage(pixelBuffer: self.pixelBuffer) if self.capturedImage != nil { print("Successfully captured and converted image") } else { print("Image conversion failed") } } } catch { print("ARKit session failed to run: \(error)") } } } private func requestCameraAccess() async { let authorizationResult = await arKitSession.requestAuthorization(for: [.cameraAccess]) cameraAccessAuthorizationStatus = authorizationResult[.cameraAccess] ?? .notDetermined if cameraAccessAuthorizationStatus == .allowed { print("User granted camera access") } else { print("User denied camera access") } } private func convertToUIImage(pixelBuffer: CVPixelBuffer?) -> UIImage? { guard let pixelBuffer = pixelBuffer else { print("Pixel buffer is nil") return nil } let ciImage = CIImage(cvPixelBuffer: pixelBuffer) let context = CIContext() if let cgImage = context.createCGImage(ciImage, from: ciImage.extent) { return UIImage(cgImage: cgImage) } print("Unable to create CGImage") return nil } } this my log: User granted camera access Requesting camera authorization... Camera authorization successful, starting ARKit session... ARKit session is running Successfully got camera frame updates void * _Nullable NSMapGet(NSMapTable * _Nonnull, const void * _Nullable): map table argument is NULL
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Jul ’24
AR Kit Body Skeleton is terrible, right?
Hello, I am trying to create new outfits based on ar kits body tracking skeleton example - the controlled robot. Is it just me or is this skeleton super annoying to work with? The bones all stand out like thorns and don't follow along the actual limb, which makes it impossible to automatically weight paint new meshes to the skeleton. Changing the bones is also not possible, since this will result in a distorted body tracking. I am an experienced modeller but I have never seen such a crazy skeleton. Even simple meshes are a pain in the bud to pair with these bones. You basically have to weight paint everything manually. Or am I missing something?
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Jul ’24
Roomplan + Object Capture
We have an issue with Apple Roomplan - on regular bases the objects which are captured are not positioned corretly in the model which happens 50% of the cases we have - that makes the feature almost useless. Is there any idea how to solve that problem?
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Jul ’24
VisionOS access ARKit when in shared space
I was planning to experiment with ARKit for Vision OS to create a widget app that places small room persistent objects in the user room, which the user can anchor anywhere they like. Trouble is, I don’t find it an amazing experience the fact that this needs to be used in a full space, as it’s limiting. those types of widgets would make sense only when one want to glance at them quickly, not as part of the main task a user is performing. Is there any way the room positional anchors can be stored and reestablished any time somebody opens an app in the shared space, rather than in the full one?
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Jul ’24