viewDidLoad.swift

override func viewDidLoad() {
    super.viewDidLoad()

    // configuration
    LibPlacenote.instance.multiDelegate += self

    // set up AR session
    self.sceneView.session.run(configuration)
    self.sceneView.autoenablesDefaultLighting = true
    self.sceneView.debugOptions = [ARSCNDebugOptions.showFeaturePoints]

    sceneView.session.delegate = self

    ptViz = FeaturePointVisualizer(inputScene: sceneView.scene);
    ptViz?.enableFeaturePoints()

    if let camera: SCNNode = sceneView?.pointOfView {
        camManager = CameraManager(scene: sceneView.scene, cam: camera)
    }
}