问ARSessionConfiguration.WorldAlignment = .gravityAndHeading的不规则世界起源/对齐

EN

override func viewDidLoad() {
    super.viewDidLoad()
    
    // Set the view's delegate
    sceneView.delegate = self
    
    // Show statistics such as fps and timing information
    sceneView.showsStatistics = true
    
    // Create a new scene
    let scene = SCNScene()

    // debug options
    let debugOptions: SCNDebugOptions = [ARSCNDebugOptions.showFeaturePoints,ARSCNDebugOptions.showWorldOrigin]
    sceneView.debugOptions = debugOptions

    // Set the scene to the view
    sceneView.scene = scene
}

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    
    // Create a session configuration
    let configuration = ARWorldTrackingSessionConfiguration()
    configuration.worldAlignment = .gravityAndHeading
    configuration.planeDetection = .horizontal

    // Run the view's session
    sceneView.session.run(configuration)
}