How to detect TapGesture in SwiftUI?

I am writing a container that has two buttons on corresponding borders which should be able to add inner lines inside the container. Previously the lines were being added one after another, but I want for the user to decide where to generate those lines. And the buttons on the borders cover the whole border so the logic is to let users tap on a border-button and the program should generate the line right at that location. I achieved it with DragGesture, but I want the users to tap the button not drag them and I am not able to figure out how can I replace the DragGesture here with TapGesture.

Button(action: {
                    addHorizontalLine()
                    self.selectedId = self.id //
                }) {
                    Rectangle()
                        .foregroundColor(.clear)
                }
                .frame(width: 4, height: rectangleSize.height)
                .background(Color.blue)
                .position(x: 4 / 2, y: rectangleSize.height / 2)
                .gesture(
                    DragGesture(minimumDistance: 0)
                    .onEnded { value in
                        tappedPointY = value.location.y / rectangleSize.height
                        addHorizontalLine()
                            }
                        )
                .zIndex(1)

                Button(action: {
                    addVerticalLine()

                    self.selectedId = self.id //
                }) {
                    Rectangle()
                        .foregroundColor(.clear)
                }
                .frame(width: rectangleSize.width, height: 4)
                .background(Color.blue)
                .position(x: rectangleSize.width / 2, y: 4 / 2)
                .gesture(
                    DragGesture(minimumDistance: 0)
                    .onEnded { value in
                        tappedPointX = value.location.x / rectangleSize.width
                        addVerticalLine()
                            }
                    )//
                .zIndex(1)

And here are the adding functions:

private func addHorizontalLine() {
        let y = rectangleSize.height * tappedPointY
        horizontalLines.append(y)
        horizontalLines = horizontalLines.sorted()
    }

    private func addVerticalLine() {
        let x = rectangleSize.width * tappedPointX
        verticalLines.append(x)
        verticalLines = verticalLines.sorted()
    }

To get the current tap location you can use the .onTapGesture functionality and create yourself a CGPoint from your tap like this..

    var body: some View {
	  VStack {
		Image(systemName: "globe")
				.imageScale(.large)
				.foregroundColor(.accentColor)
			Text("Hello, world!")
		}
		.onTapGesture { location in
			let tap = CGPoint(x: location.x, y: location.y)
			print("\(tap)")
		}
		.padding()
}

Edit:
Because it seemed that I was not clear enough I created a short programm with this drawing functionality.

struct ContentView: View {
	// you need two CGPoints to identify where the user clicked
	@State private var startTapLocation: CGPoint?
	@State private var endTapLocation: CGPoint?
	
	var body: some View {
		GeometryReader { geometry in
			ZStack {
				//Background
				Color.white
				
				// draw line
				if let start = startTapLocation, let end = endTapLocation {
					Path { path in
						path.move(to: start)
						path.addLine(to: end)
					}
					.stroke(Color.black, lineWidth: 2)
				}
			}
			//onTapGestures to identify the taps
			.onTapGesture {
				location in
				if startTapLocation == nil && endTapLocation == nil {
					print("set startTapLocation, endTap is empty")
					startTapLocation = CGPoint(x: location.x, y: location.y)
				} else
				if startTapLocation == nil && endTapLocation != nil {
					startTapLocation = CGPoint(x: location.x, y: location.y)
					endTapLocation = CGPoint(x: 0, y: 0)
					print("set startTapLocation, endTap is not empty")
				} else
				if (startTapLocation != nil && endTapLocation == nil) {
					endTapLocation = CGPoint(x: location.x, y: location.y)
					print("set endTapLocation")
				} else
				if (startTapLocation != nil && endTapLocation != nil){
					startTapLocation = CGPoint(x: location.x, y: location.y)
					print("set startTapLocation again")
				}
				
				print("Start tap: \(String(describing: startTapLocation)) , End Tap: \(String(describing: endTapLocation))")
			}
		}
	}
}

You need to add this functionality to your existing View.