I have been referencing the Object Tracking Tutorial from WWDC 2024 on Vision OS, how Create ML is used to create a reference object, and we can track them in the ARSession. I am looking forward to building this feature on an AR app for iPhone, I am using iPhone 13 Pro Max. I have created couple of reference objects from the Create ML.

I would like to know if there have been any updates that improved the image tracking speed. I submitted feedback a while ago, mentioning that the image tracking rate was only one frame per second on Vision Pro. Thank you very much. FB15688516 and FB16745373is feedback we previously submitted, but we have not received any response yet.

Hi, I'm trying to achieve 3D photo effects using a photo and a depth map, using GeomertyModifier. The offset is getting applied correctly in Reality Composer Pro, and in Xcode, but when I launch the app, the model offset is not getting applied. here are the screenshots of shader graphs and how it looks in the app

I am experimenting with RealityKit to set up a portal. Everything works, but I was wondering where the scene's origin is with respect to the front of the portal window? From experiments, the origin's X and Y appear to be at the center of the portal window, while the origin's Z appearing to be about a meter behind the portal window. Is this (at least roughly) correct? Is it documented anywhere? PS. I began with the standard visionOS app and edited the Reality Composer Pro file to create the scene.

I have created a custom hover effect per this WWDC video and many other examples on the Net: https://developer.apple.com/videos/play/wwdc2024/10152/ I can get the button to expand when looked at within a VisionOS device and it will invoke a tap event when tapped but there is no click sound like a normal SwiftUI button does in VisionOS! I can't for the life of me figure out why. Any help would be appreciated!

Hello, esteemed tech developer. I am using the Apple Vision Pro to create an AR assist system about the da Vinci Surgical Robot in a medical surgical suite, and would like to capture eye movement data with tester uniformity. Although the Apple Vision Pro has a superb infrared sensor to monitor eye movement status, Apple does not seem to have open access officially. (I'm aware of many existing discussions about this, but I was still wondering if there might be an option, particularly for research labs.)Here's my FB number.FB16603687

Hi, I downloaded a few files from apple developers website, and they are in .reality file format. I wanted to see how they are constructed, but there is no way to open them and look at the content inside (3d model, shader, animation, etc). Is there a way to look at the content of .reality file?

I have a scene built up in RealityComposerPro, in which I've added a ParticleEmitter with isEmitting set to False and 'Loop' set to True. In my app, when I toggle isEmitting to True there can be a delay of a few seconds before the ParticleEmitter starts. However, if I programatically add the emitter in code at that point, it starts immediately. To be clear, I'm seeing this on the VisionOS simulator - I don't have access to a device at this time. Am I misunderstanding how to control the ParticleEmitter when I need precise control on when it starts.

If I place the .usdz file in the project directory alongside other .swift files, ModelEntity loads it perfectly. However, if I try to load the same file from Reality Composer Pro under RealityKitContent.rkassets, I get the error: resourceNotFound("heart"). Could someone help me with this? Thank you so much Code: // // TestttttttApp.swift // Testtttttt // // Created by Zhendong Chen on 2/17/25. // import SwiftUI @main struct TestttttttApp: App { var body: some Scene { WindowGroup { ContentView() } .windowStyle(.volumetric) } } // // ContentView.swift // Testtttttt // // Created by Zhendong Chen on 2/17/25. // import SwiftUI import RealityKit import RealityKitContent struct ContentView: View { @State private var enlarge = false var body: some View { RealityView { content in do { // MARK: Work let scene = try await ModelEntity(named: "heart") content.add(scene) // MARK: Doesn't work // let scene = try await ModelEntity(named: "heart", in: realityKitContentBundle) // content.add(scene) } catch { print(error) } } } } #Preview(windowStyle: .volumetric) { ContentView() }

Hello, I'm unable to activate a timeline in my application through an OnTap, OnAddedToScene or OnNotification. In RCP I can test and play the timelines easily. When running in the simulator or on device the timelines simply do not run, regardless of the method through which I try to call the API. I have two questions: How can I check that my timelines are in my RCP project that's loaded into the scene? I don't see timelines in the entity hierarchy when I debug in RealityKit Debugger Is Behaviors a component I can manually set at runtime? I can very clearly see the behaviors component attached to my entity in RCP, but when running this code: .gesture( TapGesture() .targetedToAnyEntity() .onEnded { value in if value.entity.applyTapForBehaviors() { print("Success!") } else { print("Failure.") } } ) It prints "Failure." every time indicating to me that the entity does not have a Behavior attached to it (whether that's a component or however else the Behavior is associated with the entity) I also have not had success using the Notification system or even the OnAddedToScene behavior trigger which should theoretically work if a behavior is attached to the entity which the tap experiment indicates it's not. For context this is my notification trigger code: private let notificationTrigger = NotificationCenter.default .publisher(for: Notification.Name("RealityKit.NotificationTrigger")) @Environment(\.realityKitScene) var scene Attachment(id: "home") { Button { NotificationCenter.default.post( name: NSNotification.Name("RealityKit.NotificationTrigger"), object: nil, userInfo: [ "RealityKit.NotificationTrigger.Scene": scene, "RealityKit.NotificationTrigger.Identifier": "test" ] ) } label: { Text("Test") } .padding(20) .glassBackgroundEffect() } .onReceive(notificationTrigger) { _ in print("test notification received") I am receiving "test notification received" print statements as well. I'm using Xcode 16.0 with VisionOS 2.0 on MacOS 15.3.1

Dear Developers, I am having some problems with Reality Composer Pro on Mac. Specifically, I don't understand how to manage some timeline functions. I have an object that has a double animation, an opening animation and a closing animation. On a first tap the object should open through animation 1, while on the second tap the object should close through animation 2. Only the two animations conflict. In addition, animation 1 does not stop at the last frame but returns the object to the position of frame 0. Do you have any solutions? Thank you all

Hello, I am trying to use the subdivision mesh rendering option. I can see it working in RealityComposerPro: But not when loading asset and displaying in Simulator: Using this code: import SwiftUI import RealityKit import RealityKitContent struct AirspaceView: View { // MARK: - VIEW BODY var body: some View { RealityView { content in if let a = try? await Entity(named: "Models/Test/Test.usdc", in: realityKitContentBundle) { content.add(a) } } } } Any ideas why?

I am at a loss. I have looked at examples, and I have used chat/cursor. I cannot figure out how to target the transform/position of a Reality Composer Pro project when adding it to an ARView in iOS. I have a test red sphere working perfectly for raycast positioning. When I pass the same variables (tested with print out) to the Entity or Anchor position/transform nothing changes. It seems that, no matter what, the content of the Reality Composer Pro project is placed where the camera view initialized. How do I actually interact with its position? I just want to be able to tap the screen and place the RCP wherever I want.

I am submitting a challenge to the Swift Student Challenge. I have created a RealityContent folder using Reality Composer Pro. How can I import this folder into the Swift Package Manager (.swiftpm) project hosted on Playground to ensure that it becomes a usable package?

I'm trying to build a Shader in "Reality Composer Pro" that updates from a start time. Initially I tried the following: The idea was that when the startTime was 0, the output would be 0, but then I would set startTime from within code and this would be compared with the current GPU time, and difference used to drive another part of the shader graph: if let testEntity = root.findEntity(named: "Test"), var shaderGraphMaterial = testEntity.components[ModelComponent.self]?.materials.first as? ShaderGraphMaterial { let time = CFAbsoluteTimeGetCurrent() try! shaderGraphMaterial.setParameter(name: "StartTime", value: .float(Float(time))) testEntity.components[ModelComponent.self]?.materials[0] = shaderGraphMaterial } However, I haven't found a reference to the time the shader would be using. So now I am trying to write an EntityAction to achieve the same effect. Instead of comparing a start time to the GPU's time I'm trying to animate one of the shader's uniform input. However, I'm not sure how to specify the bind target. Here's my attempt so far: import RealityKit struct ShaderAction: EntityAction { let startValue: Float let targetValue: Float var animatedValueType: (any AnimatableData.Type)? { Float.self } static func registerEntityAction() { ShaderAction.subscribe(to: .updated) { event in guard let animationState = event.animationState else { return } let value = simd_mix(event.action.startValue, event.action.targetValue, Float(animationState.normalizedTime)) animationState.storeAnimatedValue(value) } } } extension Entity { func updateShader(from startValue: Float, to targetValue: Float, duration: Double) { let fadeAction = ShaderAction(startValue: startValue, targetValue: targetValue) if let shaderAnimation = try? AnimationResource.makeActionAnimation(for: fadeAction, duration: duration, bindTarget: .material(0).customValue) { playAnimation(shaderAnimation) } } } ''' Currently when I run this I get an assertion failure: 'Index out of range (operator[]:line 797) index = 260, max = 8' Furthermore, even if it didn't crash I don't understand how to pass a binding to the custom shader value "startValue". Any clues of how to achieve this effect - even if it's a completely different way.

I have a huge sphere where the camera stays inside the sphere and turn on front face culling on my ShaderGraphMaterial applied on that sphere, so that I can place other 3D stuff inside. However when it comes to attachment, the object occlusion never works as I am expecting. Specifically my attachments are occluded by my sphere (some are not so the behavior is not deterministic. Then I suspect it was the issue of depth testing so I started using ModelSortGroup to reorder the rending sequence. However it doesn't work. As I was searching through the internet, this post's comments shows that ModelSortGroup simply doesn't work on attachments. So I wonder how should I tackle this issue now? To let my attachments appear inside my sphere. OS/Sys: VisionOS 2.3/XCode 16.3

I implemented a ShaderGraphMaterial and tried to load it from my usda scene by ShaderGraphMaterial.init(name: in: bundle). I want to dynamically set TextureResource on that material, so I wanted to expose texture as Uniform Input of a ShaderGraphMaterial. But obviously RCP's Shader Graph doesn't support Texture input as parameter as the image shows: And from the code level, ShaderGraphMaterial also didn't expose a way to set TexturesResources neither. Its parameterNames shows an empty array if I didn't set any custom input params. The texture I get is from my backend so it really cannot be saved into a file and load it again (that would be too weird). Is there something I am missing?

PLATFORM AND VERSION Vision OS Development environment: Xcode 16.2, macOS 15.2 Run-time configuration: visionOS 2.3 (On Real Device, Not simulator) Please someone confirm I'm not crazy and this issue is actually out of my control. Spent hours trying to fix my app and running profiles because thought it was an issue related to my apps performance. Finally considered chance it was issue with API itself and made sample app to isolate problem, and it still existed in it. The issue is when a model entity moves around in a full space that was launched when the system environment immersion was turned up before opening it, the entities looks very choppy as they move around. If you take off the headset while still in the space, and put it back on, this fixes it and then they move smoothly as they should. In addition, you can also leave the space, and then turn the system environment immersion all the way down before launching the full space again, this will also make the entity moves smoothly as it should. If you launch a mixed immersion style instead of a full immersion style, this issue never arrises. The issue only arrises if you launch the space with either a full style, or progressive style, while the system immersion level is turned on. STEPS TO REPRODUCE https://github.com/nathan-707/ChoppyEntitySample Open my test project, its a small, modified vision os project template that shows it clearly. otherwise: create immersive space with either full or progressive immersion style. setup a entity in kinematic mode, apply a velocity to it to make it pass over your head when the space appears. if you opened the space while the Apple Vision Pros system environment was turned up, the entity will look choppy. if you take the headset off while in the same space, and put it back on, it will fix the issue and it will look smooth. alternatively if you open the space with the system immersion environment all the way down, you will also not run into the issue. Again, issue also does not happen if space launched is in mixed style.

Looking for help on getting "On Tap" to work inside RCP for my AVP project. I can get it to work when using "on added to scene" but if I switch to "on tap", the audio will not play when attaching the audio to an entity in my scene. I'm using the same entity for the tap gesture that the audio is using for the emitter. Here is my work flow for the "on added to scene" that works correctly to help troubleshoot my non working "on tap". Behaviors: "on added to scene". action - timeline Input target: check mark enabled, allowed all Collision set to default Audio library: source mp3 file Chanel Audio: resource mp3 file above Timeline: Play Audio with mp3 file added This set up in RCP allows my AVP project to launch correctly with audio "on added to scene". But when switching behaviors to "on tap", the audio will no longer play and I can not figure out why. I've tried several different options and nothing works. Please help!

Hi team I don't know from this error has popped up any suggestions please Thanks Zippy Games