public override void OnGUI()
 {
     base.OnGUI();
     if (mouseMainBtnPressed && isSquareMultiSelectionInputActive)
     {
         var rect = BIWUtils.GetScreenRect(lastMousePosition, Input.mousePosition);
         BIWUtils.DrawScreenRect(rect, new Color(1f, 1f, 1f, 0.25f));
         BIWUtils.DrawScreenRectBorder(rect, 1, Color.white);
     }
 }