Waving Wrapper view

WavingBackground.swift

import SwiftUI

struct WavingBackground <Content: View>: View {
    private let content: Content
    private var fill: CGFloat
   
    public init(fill: CGFloat = .zero, @ViewBuilder content: () -> Content) {
        self.fill = fill
        self.content = content()
    }
    
    var body: some View {
        ZStack {       
            // All the waves and filling rectangle stuff
            content // <- This represents whatever you want to render within this view :)
        }
    }
}

struct WavingBackground_Previews: PreviewProvider {
    static var previews: some View {
        WavingBackground(fill: 60) {
            Text("Hey!")
        }
    }
}