ARKitで顔にGeometryを表示したいです。

カメラで顔を認識した時に、ARKitで顔にGeometryを表示したく、下記のように記載したのですが表示できませんでした。SwiftUIで表示したく、どのように修正すれば、顔を認識した時に顔にGeometryを表示できるかご教授いただきたいです。
よろしくお願いいたします。

swift
1
2import SwiftUI
3import RealityKit
4import ARKit
5
6struct ContentView: View {
7    var body: some View {
8        ZStack{
9            ARViewContainer()
10        }
11    }
12}
13
14struct ARViewContainer: UIViewRepresentable {
15    func makeUIView(context: Context) -> FaceARView {
16        let arView = FaceARView(frame: .zero)
17        return arView
18    }
19    
20    func updateUIView(_ uiView: FaceARView, context: Context) {
21    }
22}

swift
1import UIKit
2import SwiftUI
3import RealityKit
4import SceneKit
5import ARKit
6
7class FaceARView: ARView, ARSessionDelegate {
8    
9    var faceGeometry: ARSCNFaceGeometry!
10    var faceNode: SCNNode = SCNNode()
11    
12    func viewDidLoad() {
13        //super.viewDidLoad()
14        guard ARFaceTrackingConfiguration.isSupported else { fatalError("Not supported") }
15        updateFaceGeometry()
16    }
17    
18    @IBOutlet var sceneView: ARSCNView! {
19        didSet {
20            sceneView.delegate = self
21            sceneView.automaticallyUpdatesLighting = true
22            sceneView.scene = SCNScene()
23            let configuration = ARFaceTrackingConfiguration()
24            configuration.isLightEstimationEnabled = true
25            sceneView.session.run(configuration, options: [.resetTracking, .removeExistingAnchors])
26        }
27    }
28    
29    func updateFaceGeometry() {
30        guard let device = sceneView.device else { return }
31        faceGeometry = ARSCNFaceGeometry(device: device)
32        if let material = faceGeometry.firstMaterial {
33            material.diffuse.contents = UIColor.gray
34            material.lightingModel = .physicallyBased
35        }
36        faceNode.geometry = faceGeometry
37    }
38}
39
40extension FaceARView: ARSCNViewDelegate {
41    func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {
42        guard let faceAnchor = anchor as? ARFaceAnchor else { return }
43        
44        faceGeometry.update(from: faceAnchor.geometry)
45        node.addChildNode(faceNode)
46    }
47    
48    func renderer(_ renderer: SCNSceneRenderer, didUpdate node: SCNNode, for anchor: ARAnchor) {
49        guard let faceAnchor = anchor as? ARFaceAnchor else { return }
50        faceGeometry.update(from: faceAnchor.geometry)
51    }
52}