public Scene(Renderer renderer)
        {
            _renderer = renderer;

            _fieldObj    = ObjData.LoadFromFile("Data/Models/cube.obj");
            _boardboxObj = ObjData.LoadFromFile("Data/Models/boardbox.obj");
            _pawnObj     = ObjData.LoadFromFile("Data/Models/pawn.obj");

            _activeCamera           = new Camera();
            _activeCamera.NearPlane = 0.1;
            _activeCamera.FarPlane  = 200.0;
            _activeCamera.Position  = VectorHelpers.Create(0, 10, -20);
            _activeCamera.LookAt    = VectorHelpers.Create(0, 0, 0);
            _activeCamera.UpVector  = VectorHelpers.Create(0, 1, 0);

            _secondaryCamera           = new Camera();
            _secondaryCamera.NearPlane = 0.1;
            _secondaryCamera.FarPlane  = 200.0;
            _secondaryCamera.Position  = VectorHelpers.Create(0, 5, -20);
            _secondaryCamera.LookAt    = VectorHelpers.Create(0, 0, 0);
            _secondaryCamera.UpVector  = VectorHelpers.Create(0, 1, 0);

            _renderer.Lights.Add(new PointLight
            {
                Position = VectorHelpers.Create(0, 10, -20),
                Color    = Colors.White,
            });

            //_renderer.Lights.Add(new PointLight
            //{
            //    Position = VectorHelpers.Create(-10, 1.5, 0),
            //    Color = Colors.Blue,
            //});

            //_renderer.Lights.Add(new PointLight
            //{
            //    Position = VectorHelpers.Create(0, 10, 0),
            //    Color = Colors.White,
            //});

            _materials = new List <Material>();

            _materials.Add(new Material
            {
                AmbientColor   = Colors.Black,
                DiffuseColor   = Colors.Chartreuse,
                SpecularColor  = Colors.Gray,
                DiffuseTexture = new WriteableBitmap(new BitmapImage(new Uri("Data/Textures/darkstone.png", UriKind.Relative))),
                ShineFactor    = 128.0,
            });

            _materials.Add(new Material
            {
                AmbientColor  = Colors.Black,
                DiffuseColor  = Colors.White,
                SpecularColor = Colors.Gray,
                ShineFactor   = 1,
            });

            _materials.Add(new Material
            {
                AmbientColor   = Color.FromRgb(16, 16, 16),
                DiffuseColor   = Colors.RosyBrown,
                SpecularColor  = Colors.White,
                DiffuseTexture = new WriteableBitmap(new BitmapImage(new Uri("Data/Textures/wood.png", UriKind.Relative))),
                ShineFactor    = 1.0,
            });

            _materials.Add(new Material
            {
                AmbientColor  = Colors.Black,
                DiffuseColor  = Colors.DarkRed,
                SpecularColor = Colors.Yellow,
                ShineFactor   = 64.0,
            });
        }