flip.swift

struct FlippedUpsideDown: ViewModifier {
    func body(content: Content) -> some View {
        content
            .rotationEffect(.radians(.pi))
            .scaleEffect(x: -1, y: 1, anchor: .center)
    }
}

extension View {
    func flipUpsideDown() -> some View {
        self.modifier(FlippedUpsideDown())
    }
}