如何放大正在swift ui中显示的场景的节点

import SwiftUI

struct ContentView: View {
    @State private var scale: CGFloat = 1.0
    
    var body: some View {
        VStack {
            Text("Hello, World!")
                .font(.largeTitle)
                .scaleEffect(scale)
            
            Button(action: {
                // 在按钮点击时增加缩放比例
                self.scale *= 1.2
            }) {
                Text("放大")
            }
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}