如何在Apple Maps中1:1缩放图像

import UIKit
import MapKit

class ViewController: UIViewController {
    @IBOutlet weak var mapView: MKMapView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 设置地图的初始位置和缩放级别
        let initialLocation = CLLocation(latitude: 37.7749, longitude: -122.4194)
        let regionRadius: CLLocationDistance = 1000
        let coordinateRegion = MKCoordinateRegion(center: initialLocation.coordinate, latitudinalMeters: regionRadius, longitudinalMeters: regionRadius)
        mapView.setRegion(coordinateRegion, animated: true)
        
        // 在按钮点击时执行缩放图像的操作
        let button = UIButton(frame: CGRect(x: 100, y: 100, width: 200, height: 50))
        button.setTitle("缩放图像", for: .normal)
        button.addTarget(self, action: #selector(zoomMapImage), for: .touchUpInside)
        view.addSubview(button)
    }
    
    @objc func zoomMapImage() {
        // 获取地图的缩放级别
        let zoomLevel = mapView.zoomLevel
        
        // 获取地图视图的大小
        let mapViewSize = mapView.frame.size
        
        // 计算所需的图像大小
        let scaledWidth = Int(mapViewSize.width * CGFloat(zoomLevel))
        let scaledHeight = Int(mapViewSize.height * CGFloat(zoomLevel))
        
        // 获取缩放后的地图图像
        let mapImage = mapView.snapshot()
        
        // 裁剪图像为所需的大小
        let croppedImage = cropImage(mapImage, toSize: CGSize(width: scaledWidth, height: scaledHeight))
        
        // 在控制台打印图像大小
        print("缩放后的图像大小：\(croppedImage.size)")
    }
    
    func cropImage(_ image: UIImage, toSize size: CGSize) -> UIImage {
        let rect = CGRect(origin: .zero, size: size)
        UIGraphicsBeginImageContextWithOptions(size, false, 0)
        image.draw(in: rect)
        let croppedImage = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        return croppedImage ?? UIImage()
    }
}