[Test]
		public static void DrawBillboard3D()
		{
            LookAtCamera cam =  new LookAtCamera(new Vector(0f, -4f, 0f));
            

			MaterialColored billboard = new MaterialColored("DeltaEngineLogo");
            MaterialColored billboard2 = new MaterialColored("DeltaEngineLogo");

			Size size = new Size(2f, 2f);
			float r = 0f;
		    

			Application.Start(delegate
			{
                
			    
				Grid.Draw();
                size = new Size(2f, 2f);
                billboard.billboardMode = BillboardMode.UpAxis;
                BillboardManager.Instance.Draw(billboard, new Vector(0f, 0f, 0),
                    size, r);
                size = new Size(10f, 10f);
                billboard2.billboardMode = BillboardMode.UpAxis;
                BillboardManager.Instance.Draw(billboard2, new Vector(0f, 0.1f, 0),
                    size, r);
                if (Input.Mouse.LeftButtonReleased)
                {
                    Application.BackgroundColor = Color.Random;
                }
			});
		}