public void AddPosition(Position position)
{
if (_positions.Any())
{
var previousPosition = _positions.Last();
position.DinstanceToPrevious = previousPosition.GeoCoordinate.GetDistanceTo(position.GeoCoordinate);
if (position.Accuracy < MinimumAccuracyToCalculateSpeed)
{
var secondsBetween = (position.DateTime - previousPosition.DateTime).TotalSeconds;
position.Speed = position.DinstanceToPrevious / secondsBetween;
}
}
_positions.Add(position);
CleanupPositions();
}
/// <returns>Returns null if exited Stationary modus, else returns Report Interval in milliseconds (lazy or aggressive)</returns>
public double? GetNewReportInterval(Position newPosition)
{
if (_previousPosition == null) // first position-update in stationary, always aggresive
{
_previousPosition = newPosition;
return _stationaryPollingIntervalAggresive.TotalMilliseconds;
}
var distance = GetDistanceToStationary(newPosition);
if (distance > _stationaryRadius)
{
// exit stationary
_stationaryPosition = null;
_stationaryGeocoordinate = null;
return null;
}
var percentage = distance / _stationaryRadius;
return percentage < 0.5 ? _stationaryPollingIntervalLazy.TotalMilliseconds : _stationaryPollingIntervalAggresive.TotalMilliseconds;
}
private StationaryUpdateResult StationaryUpdate(Geoposition geoPosition, Position newPosition)
{
if (!_stationaryManager.InStationary) return StationaryUpdateResult.NotInStationary;
var newStationaryReportInterval = _stationaryManager.GetNewReportInterval(newPosition);
if (!newStationaryReportInterval.HasValue || !_stationaryManager.InStationary) return StationaryUpdateResult.ExitedFromStationary;
PositionChanged(this, new GeolocatorWrapperPositionChangedEventArgs
{
GeolocatorLocationStatus = Geolocator.LocationStatus,
Position = geoPosition,
PositionUpdateDebugData =
PostionUpdateDebugData.ForStationaryUpdate((uint)newStationaryReportInterval,
_stationaryManager.GetDistanceToStationary(newPosition))
});
// stay in stationary
UpdateReportInterval((uint)newStationaryReportInterval);
return StationaryUpdateResult.InStationary;
}
private void OnGeolocatorPositionChanged(Geolocator sender, PositionChangedEventArgs positionChangesEventArgs)
{
if (_skipNextPosition)
{
_skipNextPosition = false;
return;
}
var newGeoCoordinate = new GeoCoordinate(positionChangesEventArgs.Position.Coordinate.Latitude, positionChangesEventArgs.Position.Coordinate.Longitude);
var newPosition = new Position(newGeoCoordinate, DateTime.Now, positionChangesEventArgs.Position.Coordinate.Accuracy);
_positionPath.AddPosition(newPosition);
var stationaryUpdateResult = StationaryUpdate(positionChangesEventArgs.Position, newPosition);
if (stationaryUpdateResult == StationaryUpdateResult.InStationary) return;
var currentAvgSpeed = _positionPath.GetCurrentSpeed(TimeSpan.FromMilliseconds(_reportInterval * 5)); // avg speed of last 5 (at max) positions
var updateScaledDistanceFilterResult = UpdateScaledDistanceFilter(currentAvgSpeed, positionChangesEventArgs.Position.Coordinate);
if (updateScaledDistanceFilterResult.SkipPositionBecauseOfDistance)
{
SkipPosition(updateScaledDistanceFilterResult.StartStationary, updateScaledDistanceFilterResult.StartStationary, updateScaledDistanceFilterResult.Distance);
return;
}
var newReportInterval = CalculateNewReportInterval(currentAvgSpeed);
if (updateScaledDistanceFilterResult.ScaledDistanceFilterChanged) UpdateReportInterval(newReportInterval);
PositionChanged(this, new GeolocatorWrapperPositionChangedEventArgs
{
GeolocatorLocationStatus = Geolocator.LocationStatus,
Position = positionChangesEventArgs.Position,
EnteredStationary = false,
PositionUpdateDebugData = PostionUpdateDebugData.ForNewPosition(positionChangesEventArgs, currentAvgSpeed, updateScaledDistanceFilterResult, Geolocator.ReportInterval, stationaryUpdateResult == StationaryUpdateResult.ExitedFromStationary)
});
}
public void StartStationary(Position stationaryPosition, Geocoordinate geocoordinate)
{
_stationaryPosition = stationaryPosition;
_stationaryGeocoordinate = geocoordinate;
}
public double GetDistanceToStationary(Position position)
{
return _stationaryPosition.GeoCoordinate.GetDistanceTo(position.GeoCoordinate);
}
private void OnGeolocatorPositionChanged(Geolocator sender, PositionChangedEventArgs positionChangesEventArgs)
{
if (_skipNextPosition)
{
_skipNextPosition = false;
return;
}
var newGeoCoordinate = new GeoCoordinate(positionChangesEventArgs.Position.Coordinate.Latitude, positionChangesEventArgs.Position.Coordinate.Longitude);
var newPosition = new Position(newGeoCoordinate, DateTime.Now, positionChangesEventArgs.Position.Coordinate.Accuracy);
_positionPath.AddPosition(newPosition);
var stationaryUpdateResult = StationaryUpdate(positionChangesEventArgs.Position, newPosition);
if (stationaryUpdateResult == StationaryUpdateResult.InStationary && !_useFixedTimeInterval)
{
return;
}
var currentAvgSpeed = _positionPath.GetCurrentSpeed(TimeSpan.FromMilliseconds(_reportInterval * 5)); // avg speed of last 5 (at max) positions
var updateScaledDistanceFilterResult = UpdateScaledDistanceFilter(currentAvgSpeed, positionChangesEventArgs.Position.Coordinate);
if (updateScaledDistanceFilterResult.SkipPositionBecauseOfDistance && !_useFixedTimeInterval)
{
SkipPosition(updateScaledDistanceFilterResult.StartStationary, updateScaledDistanceFilterResult.StartStationary, updateScaledDistanceFilterResult.Distance);
return;
}
if (updateScaledDistanceFilterResult.ScaledDistanceFilterChanged && !_useFixedTimeInterval)
{
var newReportInterval = CalculateNewReportInterval(currentAvgSpeed);
UpdateReportInterval(newReportInterval);
}
_reportedPositionsCount++;
_reportedIntervalsPositionsCount++;
var geolocatorWrapperPositionChangedEventArgs = new GeolocatorWrapperPositionChangedEventArgs
{
GeolocatorLocationStatus = Geolocator.LocationStatus,
Position = positionChangesEventArgs.Position,
EnteredStationary = false,
PositionUpdateDebugData = PostionUpdateDebugData.ForNewPosition(positionChangesEventArgs, currentAvgSpeed, updateScaledDistanceFilterResult, Geolocator.ReportInterval, stationaryUpdateResult == StationaryUpdateResult.ExitedFromStationary)
};
if (_notificationIndex < _notifications.Count)
{
using (IsolatedStorageFileStream file = new IsolatedStorageFileStream("geoLocatorWrapperOutput.txt", FileMode.Append, FileAccess.Write, IsolatedStorageFile.GetUserStoreForApplication()))
{
using (StreamWriter writeFile = new StreamWriter(file))
{
writeFile.WriteLine("_reportedPositionsCount: " + _reportedPositionsCount);
writeFile.WriteLine("_notificationIndex: " + _notificationIndex);
writeFile.WriteLine("_notificationOffsetSeconds: " + _notificationOffsetSeconds);
writeFile.WriteLine("_notifications.Count: " + _notifications.Count);
writeFile.WriteLine("_notifications[_notificationIndex].intervalSeconds: " + _notifications[_notificationIndex].intervalSeconds);
writeFile.WriteLine("Current Time: " + (_reportInterval / 1000) * _reportedIntervalsPositionsCount);
writeFile.WriteLine("Next Interval Time: " + (_notifications[_notificationIndex].intervalSeconds + _notificationOffsetSeconds));
writeFile.Close();
}
file.Close();
}
if (_reportedPositionsCount > 1 && ((_reportInterval / 1000) * _reportedPositionsCount) >= (_notifications[_notificationIndex].intervalSeconds + _notificationOffsetSeconds))
{
using (IsolatedStorageFileStream file = new IsolatedStorageFileStream("geoLocatorWrapperOutput.txt", FileMode.Append, FileAccess.Write, IsolatedStorageFile.GetUserStoreForApplication()))
{
using (StreamWriter writeFile = new StreamWriter(file))
{
writeFile.WriteLine("_notifications[_notificationIndex].text: " + _notifications[_notificationIndex].text);
writeFile.Close();
}
file.Close();
}
_notificationOffsetSeconds += _notifications[_notificationIndex].intervalSeconds;
geolocatorWrapperPositionChangedEventArgs.NotiticationText = _notifications[_notificationIndex].text;
_notificationIndex++;
}
else
{
geolocatorWrapperPositionChangedEventArgs.NotiticationText = "";
}
}
else
{
geolocatorWrapperPositionChangedEventArgs.NotiticationText = "";
}
if (_intervalReportSeconds > 0 && ((_reportInterval / 1000) * _reportedIntervalsPositionsCount) == _intervalReportSeconds)
{
_reportedIntervalsPositionsCount = 0;
geolocatorWrapperPositionChangedEventArgs.SpeachReportReady = true;
//Get Average speed
geolocatorWrapperPositionChangedEventArgs.AverageSpeed =
_positionPath.GetCurrentSpeed(TimeSpan.FromMilliseconds(_reportInterval * _reportedPositionsCount));
//Get Current speed
geolocatorWrapperPositionChangedEventArgs.CurrentSpeed =
_positionPath.GetCurrentSpeed(TimeSpan.FromSeconds(_intervalReportSeconds));
if (_reportInMiles)
{
//Convert Average speed to MPH
geolocatorWrapperPositionChangedEventArgs.AverageSpeed =
geolocatorWrapperPositionChangedEventArgs.AverageSpeed * 2.23694;
//Convert Current speed to MPH
geolocatorWrapperPositionChangedEventArgs.CurrentSpeed =
geolocatorWrapperPositionChangedEventArgs.CurrentSpeed * 2.23694;
//Get Total Distance
geolocatorWrapperPositionChangedEventArgs.TotalDistance =
_positionPath.GetTotalDistance(TimeSpan.FromMilliseconds(_reportInterval * _reportedPositionsCount)) * 0.000621371;
}
//Get Average Pace
geolocatorWrapperPositionChangedEventArgs.AveragePace =
60 / geolocatorWrapperPositionChangedEventArgs.AverageSpeed;
//Get Current Pace
geolocatorWrapperPositionChangedEventArgs.CurrentPace =
60 / geolocatorWrapperPositionChangedEventArgs.CurrentSpeed;
//Get Total Time
geolocatorWrapperPositionChangedEventArgs.TotalTime =
TimeSpan.FromMilliseconds(_reportInterval * _reportedPositionsCount);
}
PositionChanged(this, geolocatorWrapperPositionChangedEventArgs);
}