GroundReflectionViewModifier-part1.swift

private struct GroundReflectionViewModifier: ViewModifier {
    let offsetY: CGFloat
    func body(content: Content) -> some View {
        content // base content
            .background( // using background to duplicate the content with the View
                content // using the same content here to duplicate
                    // this will create a flip in the axis Y with the anchor in the bottom
                    .scaleEffect(x: 1.0, y: -1.0, anchor: .bottom) 
                    // adding the opacity
                    .opacity(0.3)
                    // and receiving the offsetY as parameter
                    .offset(y: offsetY)
            )
    }
}