Draw a waveform with SwiftUI using a Path

Waveform.swift

struct ContentView: View {
    @ObservedObject var audioEngine = AudioEngine()
    
    var body: some View {
        GeometryReader { geometry in
            Path { path in
                path.move(to: CGPoint(x: 0, y: geometry.size.height/2))
                for i in 0..<Int(geometry.size.width) {
                    path.addLine(to: CGPoint(x: CGFloat(i), y: (geometry.size.height/2) + (self.scaleFactor * CGFloat(self.audioEngine.buffer[i]))))
                }
            }
            .stroke(Color.blue)
        }
    }
    
    let scaleFactor: CGFloat = 400
}