SwiftUI双指平移手势

struct ContentView: View {
    @State private var offset = CGSize.zero
    
    var body: some View {
        Rectangle()
            .frame(width: 200, height: 200)
            .foregroundColor(.blue)
            .offset(offset)
            .gesture(
                DragGesture(minimumDistance: 0)
                    .onChanged { value in
                        if value.startLocation.x < value.location.x {
                            self.offset.width = value.translation.width
                        } else {
                            self.offset.width = -value.translation.width
                        }
                        
                        if value.startLocation.y < value.location.y {
                            self.offset.height = value.translation.height
                        } else {
                            self.offset.height = -value.translation.height
                        }
                    }
                    .onEnded { _ in
                        self.offset = CGSize.zero
                    }
            )
    }
}