Reply To: Get Eye-screen-coordinates and match it with a Unity game object

[Furkan Genc]

I use the code below but it moves just opposite on the X coordinate (it goes left when I look right and it goes right when I look left). Unfortunately, I cannot find the mistake here;

void Update()
	{
		var displaySize = _eyeXHost.DisplaySize;
		var screenBounds = _eyeXHost.ScreenBounds;
		var gazePoint = _gazePointDataComponent.LastGazePoint;

		var gazePointOnDisplayX = gazePoint.Display.x;
		var gazePointOnDisplayY = gazePoint.Display.y;

		if (displaySize.IsValid &&
		    screenBounds.IsValid && screenBounds.Value.Width > 0 && screenBounds.Value.Height > 0 &&
		    gazePoint.IsValid)
		{
			var normalizedGazePoint = new Vector2(
				(float)((gazePointOnDisplayX - screenBounds.Value.X) / screenBounds.Value.Width),
				(float)((gazePointOnDisplayY - screenBounds.Value.Y) / screenBounds.Value.Height));
			
			var gazePointOnDisplayPlaneMm = new Vector2(
				(float)((0.5 - normalizedGazePoint.x) * displaySize.Value.Width),
				(float)((0.5 - normalizedGazePoint.y) * displaySize.Value.Height));
			
			
			_rendererComponent.transform.position = new Vector3(
				gazePointOnDisplayPlaneMm.x * Scale,
				gazePointOnDisplayPlaneMm.y * Scale,
				0);
			
			_rendererComponent.enabled = true;
		}
		else
		{
			_rendererComponent.enabled = false;
		}
	}

Could you help me please ?