SwiftUI Circular Slider parts

ContentView_2.swift

struct ContentView: View {
    var body: some View {
        ZStack {
            Rectangle()
                .fill(Color.init(red: 34/255, green: 30/255, blue: 47/255))
                .edgesIgnoringSafeArea(.all)
            
            TemperatureControlView()
        }
    }
}

struct TemperatureControlView: View {
    var body: some View {
        ZStack {
            
        }
    }
}