private void OpenMenu()
{
Debug.Log("turn off solar system....");
solarSystem.BindGazeManager(false);
Vector3 headPosition = Camera.main.transform.position;
Vector3 gazeDirection = Camera.main.transform.forward;
Vector3 pos = headPosition + gazeDirection * 2;
menuManager.ShowMenu(mainMenu, pos, gazeDirection);
menuManager.cbMenuHide = OnMenuHide;
inputManager.layerMask = LayerMask.GetMask("UI");
}
