Update Yaw Value

using System;
using Windows.ApplicationModel.Core;
using Urho;
using Urho.SharpReality;
using Urho.Shapes;
using Urho.Gui;


namespace HelloWorld
{
    internal class Program
    {
        [MTAThread]
        static void Main() => CoreApplication.Run(
            new UrhoAppViewSource<HelloWorldApplication>(
                new ApplicationOptions("Data")));
    }

    public class HelloWorldApplication : StereoApplication
    {
        //membuat Node yang digunakan selama berjalannya program
        Node spotNode;
        Node yawNode;
        //ga perlu pake, bisa langsung kok
        //float yaw; //variabel publik ini mendefinisikan yaw rightcamera hololens

        //deklarasi yawText
        Text3D yawText;
        public HelloWorldApplication(ApplicationOptions opts) : base(opts) { }

        protected override void Start()
        {
            // base.Start() creates a basic scene
            base.Start();

            //mendefinisikan spotNode sebagai child dari Scene
            spotNode = Scene.CreateChild();

            //menentukan posisi spotNode dan skala
            spotNode.Position = new Vector3(0, 0, 1);
            spotNode.SetScale(0.005f);

            //mendefinisikan bentuk objek dan teksturnya
            var spotFisik = spotNode.CreateComponent<Sphere>();
            spotFisik.SetMaterial(Material.FromImage("Textures/Moon.jpg"));

            //mendefiniskan yawNode sebagai child Scene
            yawNode = Scene.CreateChild();

            //mendefinisikan posisi dan skala yawNode
            yawNode.Position = new Vector3(0, -0.05f, 1);
            yawNode.SetScale(0.1f); // 1cm


            //membuat komponen text3D untuk menampilkan variable yaw
            //deklarasi yawTextnya pindah ke atas
            yawText = yawNode.CreateComponent<Text3D>();
            yawText.HorizontalAlignment = HorizontalAlignment.Center;
            yawText.VerticalAlignment = VerticalAlignment.Center;
            yawText.Text = "0"; //value default
            yawText.SetFont(CoreAssets.Fonts.AnonymousPro, 30);
            yawText.SetColor(Color.White);
        }

        //membuat fungsi OnUpdate agar fungsi aktif ketika ada update terjadi
        protected override void OnUpdate(float timeStep)
        {
            //mengambil nilai yaw dari rightcamera hololens
            //ga perlu pake, bisa langung gini aja
            //yaw = RightCamera.Node.WorldRotation.YawAngle;

            //update valuenya
            //bisa pake Rotation atau World Rotation
            //yawText.Text = RightCamera.Node.WorldRotation.YawAngle;
            yawText.Text = RightCamera.Node.Rotation.YawAngle;
        }
    }
}