如何添加阴影到SwiftUI弧线？

import SwiftUI

struct ContentView: View {
    var body: some View {
        ZStack {
            // 创建弧线
            Path { path in
                path.addArc(center: CGPoint(x: 200, y: 200), radius: 100, startAngle: .degrees(0), endAngle: .degrees(180), clockwise: true)
            }
            .fill(Color.blue) // 设置弧线填充颜色
            .shadow(color: .gray, radius: 10, x: 0, y: 0) // 添加阴影效果
        }
    }
}

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