如何在Swift中重置循环进度条？

import UIKit

class ViewController: UIViewController {
    var progressView: CircularProgressView!

    override func viewDidLoad() {
        super.viewDidLoad()

        // 初始化循环进度条
        progressView = CircularProgressView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))
        progressView.center = view.center
        progressView.setProgress(0.5) // 设置初始进度
        view.addSubview(progressView)

        // 添加按钮用于重置进度
        let resetButton = UIButton(frame: CGRect(x: 0, y: 0, width: 100, height: 50))
        resetButton.setTitle("重置", for: .normal)
        resetButton.addTarget(self, action: #selector(resetProgress), for: .touchUpInside)
        resetButton.center = CGPoint(x: view.center.x, y: view.center.y + 100)
        view.addSubview(resetButton)
    }

    // 重置进度
    @objc func resetProgress() {
        progressView.setProgress(0) // 重置进度为0
    }
}