public void SetUp()
        {
            AddStep("create camera", () =>
            {
                camera         = new TestCameraVirtual();
                drawableCamera = new DrawableCameraVirtual(camera)
                {
                    Anchor = Anchor.Centre,
                    Origin = Anchor.Centre,
                    Size   = new Vector2(256),
                };

                Add(drawableCamera);
            });
        }
        public void SetUp()
        {
            Add(left = new DrawableCameraVirtual(camera, false)
            {
                X = -0.25f,
                RelativePositionAxes = Axes.X,
                Anchor = Anchor.Centre,
                Origin = Anchor.Centre,
                Size   = new Vector2(256),
            });

            Add(right = new DrawableCameraVirtual(camera, false)
            {
                X = 0.25f,
                RelativePositionAxes = Axes.X,
                Anchor = Anchor.Centre,
                Origin = Anchor.Centre,
                Size   = new Vector2(256),
            });
        }