spinner.swift

var body: some View {
  ZStack {
    Color.black.opacity(0.8)
      .edgesIgnoringSafeArea(.all)
      .blur(radius: 200)

    ZStack {
      Color.gray.opacity(0.5)

      Circle()
        .trim(from: 0.2, to: 1)
        .stroke(
          Color.white,
          style: StrokeStyle(
            lineWidth: 5,
            lineCap: .round
          )
        )
        .frame(width: width, height: height)
        .shadow(color: Color.black.opacity(0.1), radius: 3, x: 0, y: 3)
        .rotationEffect(.degrees(isAnimating ? 360 : 0))
        .animation(
          Animation.linear(duration: 1)
            .repeatForever(autoreverses: false)
          )
    }
    .frame(width: 80, height: 80)
    .background(Color.white)
    .cornerRadius(30)
    .shadow(color: Color.white.opacity(0.3), radius: 5, x: 0, y: 5)
    .shadow(color: Color.black.opacity(0.1), radius: 2, x: 0, y: 2)
    .onAppear {
      self.isAnimating = true
    }
  }
}