public Vector2 mousePos1;
    public Vector2 mousePos2;

    public LineRenderer lineRenderer;

    private void Start()
    {
        lineRenderer = GetComponent<LineRenderer>();
        mousePos1 = new Vector2(0, 0);
    }

    private void OnMouseDown()
    {
        mousePos2 = Camera.main.ScreenToWorldPoint(Input.mousePosition);
    }

    private void OnMouseDrag()
    {
        if (mousePos2 != new Vector2(0, 0))
        {
            mousePos1 = Camera.main.ScreenToWorldPoint(Input.mousePosition);
            Debug.Log(mousePos1);
            Debug.Log(Vector2.Distance(mousePos2, mousePos1));

            lineRenderer.SetPosition(0, new Vector3(mousePos1.x, mousePos1.y, 0));
            lineRenderer.SetPosition(1, new Vector3(mousePos2.x, mousePos2.y, 0));
           
        }
    }