[Test]
		public static void Test2()
		{
            BaseCamera cam = new LookAtCamera(new Vector(0,0 , 10));
            cam.FieldOfView = MathHelper.DegreeToRadians(90);
		    cam.NearPlane = 1;  //work
            cam.FarPlane = 10;   //work
			Vector halfSize = new Vector(3, 3, 3);

			Application.Start(delegate
			{
				Grid.Draw();
				Point input = Input.Mouse.Position;
				Ray screenRay = ScreenSpace.GetRayFromScreenPoint(input);
				Vector OnGrid =(screenRay.Position + screenRay.Direction);
			    
				Font.Default.DrawCentered("input=" + input +
				                          "\nscreenRay=" + screenRay +
                                          "\n OnGrid=" + OnGrid + " " + cam.FarPlane,
					new Point(0.5f, 0.3f));

                if(Input.Keyboard.SpaceIsPressed)
                {
                    cam.Position += new Vector(0,0,-0.001f);
                    cam.FarPlane += -0.001f; //dont work ???
                }
			});
		}