private StopZoneDouble ConvertZoneTodouble(StopZone zone)
        {
            StopZoneDouble stDouble = new StopZoneDouble();

            if (zone == null)
            {
                return(stDouble);
            }

            if (GetQuarter(zone.From) == Quarter.TopRight)
            {
                stDouble.From = 40 - (zone.From.Z * 10);
            }
            else if (GetQuarter(zone.From) == Quarter.TopLeft)
            {
                stDouble.From = -(zone.From.Z * 10);
            }
            else if (GetQuarter(zone.From) == Quarter.DownLeft)
            {
                stDouble.From = 20 - (-(zone.From.Z * 10));
            }
            else if (GetQuarter(zone.From) == Quarter.DownRight)
            {
                stDouble.From = 20 + (zone.From.Z * 10);
            }

            if (GetQuarter(zone.To) == Quarter.TopRight)
            {
                stDouble.TO = 40 - (zone.To.Z * 10);
            }
            else if (GetQuarter(zone.To) == Quarter.TopLeft)
            {
                stDouble.TO = -(zone.To.Z * 10);
            }
            else if (GetQuarter(zone.To) == Quarter.DownLeft)
            {
                stDouble.TO = 20 - (-(zone.To.Z * 10));
            }
            else if (GetQuarter(zone.To) == Quarter.DownRight)
            {
                stDouble.TO = 20 + (zone.To.Z * 10);
            }


            return(stDouble);
        }
        // Constructor
        public TiltNavigation(MapView map)
        {
            _accelerometer = Accelerometer.GetDefault();

            _isFirstTime = true;

            _map = map;
            _map.ExtentChanged += _map_ExtentChanged;

            /////Define Portarte Default Stop Zone/////
            _portrateStopZone = new StopZone();

            _portrateStopZone.From = new AccelerometerPoint(0.0f, 0.7f, -0.3f);
            _portrateStopZone.To   = new AccelerometerPoint(0.0f, 0.7f, 0.3f);

            _panDirection = Directions.None;

            if (_myDispatcherTimer == null)
            {
                _myDispatcherTimer          = new DispatcherTimer();
                _myDispatcherTimer.Interval = new TimeSpan(0, 0, 0, 1, 0); // 100 Milliseconds
                _myDispatcherTimer.Tick    += _myDispatcherTimer_Tick;
            }
        }