public void MarkByScreenPoint(Vector3 screenPoint)
{
Ray ray = Camera.main.ScreenPointToRay(screenPoint);
RaycastHit hit;
if (Physics.Raycast(ray, out hit))
{
point = hit.point;
marker.transform.position = hit.point;
SetText(hit.point, plotter.GetSurfaceBySlot(hit.collider.gameObject));
}
}