如何使用Quartz绘制钢笔笔划？

import UIKit

class PenStrokeView: UIView {
    override func draw(_ rect: CGRect) {
        guard let context = UIGraphicsGetCurrentContext() else { return }
        
        // 设置线条颜色和宽度
        context.setStrokeColor(UIColor.black.cgColor)
        context.setLineWidth(2.0)
        
        // 移动到起始位置
        context.move(to: CGPoint(x: 50, y: 50))
        
        // 绘制贝塞尔曲线
        context.addCurve(to: CGPoint(x: 200, y: 200),
                         control1: CGPoint(x: 100, y: 0),
                         control2: CGPoint(x: 150, y: 250))
        
        // 渲染路径
        context.strokePath()
    }
}

// 在需要显示钢笔笔划的地方创建并添加PenStrokeView实例
let penStrokeView = PenStrokeView(frame: CGRect(x: 0, y: 0, width: 300, height: 300))
view.addSubview(penStrokeView)