How would I modify an already drawn Path? - swiftui

Question

So I have a view of lines. The number of lines are determined by the user's input. I know about creating lines and how to render those lines with different effects.. but how would I modify a line that has already been created.
So for example I would like to make the second drawn line have a break in the middle after maybe a button tap from the user..
Here is some minimally reproduced code..
import SwiftUI
struct ContentView: View {
#State private var path = Path()
#State private var horizontalLines = 0
var body: some View {
GeometryReader { geo in
VStack {
Draw(path: $path)
.stroke()
.clipped()
.padding()
HorizontalLine(path: $path, horizontalLines: $horizontalLines, rect: geo.frame(in: .local))
}
}
}
private func addLine() {
path.addEllipse(in: path.boundingRect)
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
struct Draw: Shape {
#Binding var path: Path
func path(in rect: CGRect) -> Path {
var path = path
path.addRect(rect)
return path
}
}
struct HorizontalLine: View {
#Binding var path: Path
#Binding var horizontalLines: Int
let rect: CGRect
var verticalOffset: CGFloat {
let height = rect.size.height
let tenths = height / 10
return tenths * CGFloat(horizontalLines)
}
var body: some View {
Button("Add Horizontal Lines") {
path = addHLine()
}
}
private func addHLine() -> Path {
var path = path
path.move(to: CGPoint(x: rect.minX + 50, y: verticalOffset))
path.addLine(to: CGPoint(x: rect.maxX - 75 , y: verticalOffset))
self.horizontalLines += 1
return path
}
}