如何使用Xcode在ARKit中绘制两点之间的曲线？

import UIKit
import ARKit
import SceneKit

class ViewController: UIViewController, ARSCNViewDelegate {

    @IBOutlet var sceneView: ARSCNView!

    override func viewDidLoad() {
        super.viewDidLoad()

        // 设置场景视图的代理
        sceneView.delegate = self

        // 创建一个场景
        let scene = SCNScene()

        // 设置场景视图的场景
        sceneView.scene = scene

        // 创建两个点的位置
        let startPoint = SCNVector3(0, 0, -1)
        let endPoint = SCNVector3(0, 0, -2)

        // 创建曲线的形状
        let curvePath = UIBezierPath()
        curvePath.move(to: CGPoint(x: startPoint.x, y: startPoint.y))
        curvePath.addCurve(to: CGPoint(x: endPoint.x, y: endPoint.y), controlPoint1: CGPoint(x: startPoint.x + 1, y: startPoint.y), controlPoint2: CGPoint(x: endPoint.x - 1, y: endPoint.y))

        // 创建曲线的节点
        let curveNode = SCNNode(geometry: SCNShape(path: curvePath, extrusionDepth: 0.1))

        // 设置曲线节点的位置
        curveNode.position = SCNVector3Zero

        // 将曲线节点添加到场景中的根节点上
        scene.rootNode.addChildNode(curveNode)

        // 设置场景视图的场景
        sceneView.scene = scene
    }

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

        // 创建一个追踪配置
        let configuration = ARWorldTrackingConfiguration()

        // 运行场景视图的会话
        sceneView.session.run(configuration)
    }

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

        // 暂停场景视图的会话
        sceneView.session.pause()
    }
}