public void DrawTrajectory(Trajectory2D trajectory)
        {
            var points = trajectory.Select(point => new PointLatLng(point.Y, point.X)).ToList();
            var route  = new GMapRoute(points, "points")
            {
                Stroke = { Color = Color.Black, Width = 2 }
            };

            routesOverlay.Routes.Add(route);
        }