Xcode：12.5 iOS：14.5 I updated the latest version. In the previous version. I blocked the anchor image with my hand, audioEntity has been kept in the AR scene. But now, I blocked the anchor image with my hand, audioEntity will disappear. Why? How do I achieve the previous effect？ func session(_ session: ARSession, didAdd anchors: [ARAnchor])   {     anchors.compactMap { $0 as? ARImageAnchor }.forEach {               rootAnchor = AnchorEntity(anchor: $0)       arView.scene.addAnchor(rootAnchor)               add()     }   }   fileprivate func add()   {     let audioPlane = MeshResource.generatePlane(width: 0.2, height: 0.2, cornerRadius: 0)     var audioMtl = SimpleMaterial()     do {       audioMtl.baseColor = try MaterialColorParameter.texture(TextureResource.load(named: "audio_play.png"))     } catch {     }     let audioEntity = ModelEntity(mesh: audioPlane, materials: [audioMtl])     audioEntity.position = [0, 0.1, 0]     rootAnchor.addChild(audioEntity)   }

init(_ path: String)   {     super.init()           self.name = "modelEy"           var cancellable: AnyCancellable? = nil     cancellable = Entity.loadAsync(contentsOf: URL(fileURLWithPath: path))       .sink(receiveCompletion: { error in                   DispatchQueue.main.async {           cancellable?.cancel()           cancellable = nil         }       }, receiveValue: { [weak self] ey in         guard let `self` = self else { return }                   ey.name = "animationEy"         self.addChild(ey)                   let entityBounds = ey.visualBounds(relativeTo: ey.parent)         let extents: SIMD3<Float> = [entityBounds.extents.x, entityBounds.extents.y, entityBounds.extents.z]         self.collision = CollisionComponent(shapes: [ShapeResource.generateBox(size: extents).offsetBy(translation: entityBounds.center)])                   DispatchQueue.main.async {           cancellable?.cancel()           cancellable = nil         }       })   } ey.availableAnimations.forEach {     if #available(iOS 15.0, *)     {       ey.playAnimation($0.repeat())     }   } The animation does not play. Skeletal animation!

Xcode：13.1 iOS：15.1 USDZ：https://sketchfab.com/3d-models/spartan-armour-mkv-halo-reach-57070b2fd9ff472c8988e76d8c5cbe66 The animation can be played in iOS14, but after I update to iOS15, the animation cannot be played. Thanks import UIKit import ARKit import RealityKit import Combine class ViewController: UIViewController {       @IBOutlet var arView: ARView!       var rootAnchor: AnchorEntity!           override func viewDidLoad() {     super.viewDidLoad()           rootAnchor = AnchorEntity(plane: .horizontal)     arView.scene.addAnchor(rootAnchor)           var cancellable: AnyCancellable? = nil     cancellable = Entity.loadAsync(contentsOf: Bundle.main.url(forResource: "Spartan_Armour_MKV_-_Halo_Reach", withExtension: "usdz")!)       .sink(receiveCompletion: { error in         DispatchQueue.main.async {          cancellable?.cancel()          cancellable = nil         }       }, receiveValue: { [weak self] ey in         guard let self = self else { return }         self.rootAnchor.addChild(ey)         ey.availableAnimations.forEach {           ey.playAnimation($0.repeat())         }         DispatchQueue.main.async {           cancellable?.cancel()           cancellable = nil         }     })   } }

I use Entity.loadAsync to load the USDZ. The camera is stuck for a moment when loading the model. var cancellable: AnyCancellable? = nil     cancellable = Entity.loadAsync(contentsOf: Bundle.main.url(forResource: "vyygabbj_afr", withExtension: "usdz")!)       .sink(receiveCompletion: { error in         DispatchQueue.main.async {          cancellable?.cancel()          cancellable = nil         }       }, receiveValue: { [weak self] ey in         guard let self = self else { return }         self.modelEy = ModelEntity()         self.modelEy.addChild(ey)         self.rootAnchor.addChild(self.modelEy)         ey.availableAnimations.forEach {           ey.playAnimation($0.repeat())         }         DispatchQueue.main.async {           cancellable?.cancel()           cancellable = nil         }     })

Although the model disappeared, the memory did not decrease. How to delete memory occupied by the model？ // MARK: === viewDidLoad   override func viewDidLoad() {     super.viewDidLoad()           arView.renderOptions = [.disableMotionBlur, .disableDepthOfField, .disableCameraGrain, .disableHDR]     arView.environment.sceneUnderstanding.options.insert(.occlusion)           rootAnchor = AnchorEntity(plane: .horizontal)     arView.scene.addAnchor(rootAnchor)           var cancellable: AnyCancellable? = nil     cancellable = Entity.loadAsync(contentsOf: Bundle.main.url(forResource: "vyygabbj_afr", withExtension: "usdz")!)       .sink(receiveCompletion: { error in         DispatchQueue.main.async {          cancellable?.cancel()          cancellable = nil         }       }, receiveValue: { [weak self] ey in         guard let self = self else { return }         self.modelEy = ModelEntity()         self.modelEy.addChild(ey)                   self.rootAnchor.addChild(self.modelEy)         ey.availableAnimations.forEach {           ey.playAnimation($0.repeat())         }                   DispatchQueue.main.async {           cancellable?.cancel()           cancellable = nil         }     })   }   override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?)   {     modelEy.removeFromParent()   }

How to get Euler angles in RealityKit？

I use ARImageTrackingConfiguration to load the entity. In the scene the entity keeps shaking. Tracking images have been correcting the rootAnchor transform,which should be the cause of this problem. Is there any optimization plan? override func viewDidLoad() {     super.viewDidLoad()           arView.session.delegate = self           guard let anchorCGImage = UIImage(named: "anchor.png")?.cgImage else { return }     let arReferenceImage = ARReferenceImage(anchorCGImage, orientation: .up, physicalWidth: CGFloat(0.1))     let arImages: Set<ARReferenceImage> = [arReferenceImage]     imageConfiguration.trackingImages = arImages     imageConfiguration.maximumNumberOfTrackedImages = 1     arView.session.run(imageConfiguration)   } func session(_ session: ARSession, didAdd anchors: [ARAnchor])   {     anchors.compactMap { $0 as? ARImageAnchor }.forEach {       do {         let ey = try Entity.load(named: "c5nj3ibu_l1a", in: .main)         ey.scale = [0.4, 0.4, 0.4]         rootAnchor = AnchorEntity(anchor: $0)         rootAnchor.addChild(ey)         arView.scene.addAnchor(rootAnchor)       } catch {       }     }   }

I use Reality Converter to convert GLB to USDZ, the color becomes darker, I don't know why?Does anyone know the reason？Thanks

When isAutoFocusEnabled is set to true, the entity in the scene keeps shaking. No focus when isAutoFocusEnabled is set to false. How to set up to solve this problem. override func viewDidLoad() { super.viewDidLoad() arView.session.delegate = self guard let arCGImage = UIImage(named: "111", in: .main, with: .none)?.cgImage else { return } let arReferenceImage = ARReferenceImage(arCGImage, orientation: .up, physicalWidth: CGFloat(0.1)) let arImages: Set<ARReferenceImage> = [arReferenceImage] let configuration = ARImageTrackingConfiguration() configuration.trackingImages = arImages configuration.maximumNumberOfTrackedImages = 1 configuration.isAutoFocusEnabled = false arView.session.run(configuration) } func session(_ session: ARSession, didAdd anchors: [ARAnchor]) { anchors.compactMap { $0 as? ARImageAnchor }.forEach { let anchor = AnchorEntity(anchor: $0) let mesh = MeshResource.generateBox(size: 0.1, cornerRadius: 0.005) let material = SimpleMaterial(color: .gray, roughness: 0.15, isMetallic: true) let model = ModelEntity(mesh: mesh, materials: [material]) model.transform.translation.y = 0.05 anchor.children.append(model) arView.scene.addAnchor(anchor) } }