PDollars & Line renderer

Hello i am using PDollars (https://www.assetstore.unity3d.com/en/#!/content/21660) to detect my gesture on my game. I have a simple problem with the line renderer, on tactil, it makes a lot of points instead of a straight and soft line. It's obvously from this part of the code (you can see it in demo.cs):

     if (drawArea.Contains(virtualKeyPosition))
     {
         if (Input.GetMouseButtonDown(0))
         {
             ++strokeId;

             Transform tmpGesture = Instantiate(gestureOnScreenPrefab, transform.position, transform.rotation) as Transform;
             currentGestureLineRenderer = tmpGesture.GetComponent<LineRenderer>();

             gestureLinesRenderer.Add(currentGestureLineRenderer);

             vertexCount = 0;
         }

         if (Input.GetMouseButton(0))
         {
             points.Add(new Point(virtualKeyPosition.x, -virtualKeyPosition.y, strokeId));

             currentGestureLineRenderer.SetVertexCount(++vertexCount);
             currentGestureLineRenderer.SetPosition(vertexCount - 1, Camera.main.ScreenToWorldPoint(new Vector3(virtualKeyPosition.x, virtualKeyPosition.y, 10)));
         }
     }

The code use the points to make the line, but i can't find any solution. Some help would be greatly thanks.