override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)

        // Create a session configuration
        let configuration = ARWorldTrackingConfiguration()

//        configuration.planeDetection =  [.horizontal, .vertical]
//        configuration.planeDetection =  .vertical
        configuration.planeDetection =  .horizontal

        configuration.isLightEstimationEnabled = true
        // Run the view's session
        sceneView.session.run(configuration)

    }