如何在ios图表中使用doubleTap手势的自定义实现

import UIKit

class ChartViewController: UIViewController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 创建图表视图
        let chartView = ChartView(frame: CGRect(x: 0, y: 0, width: 300, height: 200))
        view.addSubview(chartView)
        
        // 添加双击手势识别器
        let doubleTapGesture = UITapGestureRecognizer(target: self, action: #selector(handleDoubleTap(_:)))
        doubleTapGesture.numberOfTapsRequired = 2
        chartView.addGestureRecognizer(doubleTapGesture)
    }
    
    @objc func handleDoubleTap(_ gesture: UITapGestureRecognizer) {
        if gesture.state == .ended && gesture.tapCount == 2 {
            // 获取双击位置
            let doubleTapPoint = gesture.location(in: gesture.view)
            
            // 在图表中根据双击位置进行相应处理
            // ...
            
            // 示例：放大图表
            chartView.zoomIn(at: doubleTapPoint)
        }
    }
}

class ChartView: UIView {
    
    func zoomIn(at point: CGPoint) {
        // 在指定位置放大图表
        // ...
    }
}