private static bool CheckInside(Location loc1, Location loc2, Circle circle)
{
HaversineFormula haversineFormula = new HaversineFormula();
return(haversineFormula.Dist(
loc1, loc2, HaversineFormula.TypeOfDistance.Kilometres) < circle.Rad);
}
public ActionResult Index()
{
string resultFormula;
string info;
string inOutCircle;
string outcircleAlt;
Location loc1 = new Location(52.343348, -8.970760); //End point of section of local field in home village on edge of field boundary at one side of the field
Location loc2 = new Location(52.343095, -8.972363); // Middle point of section of local field in home village
Location loc3 = new Location(52.350095, -8.962363); //Asset outside geofence test
Circle circleGeofence = new Circle(52.343095, -8.972363, 0.2);
Debug.Write("The centre of the circle formed is at (" + circleGeofence.XPoint + " ," + circleGeofence.YPoint + ")");
Debug.Write("\nRadius of circle geofence is " + circleGeofence.Rad);
HaversineFormula formula = new HaversineFormula();
double res = formula.Dist(loc1, loc2, HaversineFormula.TypeOfDistance.Kilometres);
resultFormula = "Result of Haversine Formula based on distance between 2 points of field at home village (Notably middle of field whose real-world coordinates are (" + loc1.Lat + ", " + loc1.Lon + ") " +
"and point at edge of field boundary whose real-world coordinates (" + loc2.Lat + ", " + loc2.Lon + ")) is " + res + " km. ";
info = "\nValues in Haversine Formula Equation based on real-world coordinates seen at starting point of map where custom-made marker is situated with custom made circle representing a geofence.";
bool checker = CheckInside(loc1, loc2, circleGeofence);
if (checker)
{
inOutCircle = "\n1st Check\nThe predefined cattle asset point before the addition of markers for testing which is not the point at the middle of the field represented as (" + loc1.Lat + ", " + loc1.Lon + ") " + " is inside the geofence.";
}
else
{
inOutCircle = "\n1st Check\nThe predefined cattle asset point before the addition of markers for testing which is not the point at the middle of the field represented as (" + loc1.Lat + ", " + loc1.Lon + ") " + " is outside the geofence";
}
bool checkOut = CheckInside(loc2, loc3, circleGeofence);
if (checkOut)
{
outcircleAlt = "\n\n2nd Check\nAnother predefined cattle asset point before the addition of markers for testing which is not the point at the middle of the field represented as (" + loc3.Lat + ", " + loc3.Lon + ") " + " is inside the geofence.";
}
else
{
outcircleAlt = "\n\n2nd Check\nAnother predefined cattle asset point before the addition of markers for testing which is not the point at the middle of the field represented as (" + loc3.Lat + ", " + loc3.Lon + ") " + " is outside the geofence";
}
ViewBag.Message = resultFormula + info + inOutCircle + outcircleAlt;
return(View());
}
public void HaversineFormula()
{
Location loc = new Location(48.54, 50.56);
Location location = new Location(55.55, 52.80);
HaversineFormula haversine = new HaversineFormula();
double res = haversine.Dist(loc, location, TypeOfDistance.Kilometres);
HaversineFormula haversine1 = new HaversineFormula();
double res1 = haversine.Dist(loc, location, TypeOfDistance.Kilometres);
Assert.AreEqual(res, res1);
}
public IHttpActionResult UpdateVehiclePosition()
{
string data = string.Empty;
var linesWithBuses = unitOfWork.TransportLine.GetAll().Where(x => x.Vehicles.Count > 0 && x.TransportLineID == "64A");
foreach (var lwb in linesWithBuses)
{
var vehiclesOnLine = lwb.Vehicles.ToList();
var path = lwb.LinePoints.ToList();
var pathCountEnd = path.Count - 1;
double distanceTraveled = 10.0; //m
for (int i = 0; i < vehiclesOnLine.Count; i++)
{
double bearing = 0.0;
if (vehiclesOnLine[i].X == path[path.Count - 1].X && vehiclesOnLine[i].Y == path[path.Count - 1].Y)
{
vehiclesOnLine[i].X = path[0].X;
vehiclesOnLine[i].Y = path[0].Y;
}
(double, double)move = (path[0].X, path[0].Y);
for (int j = 0; j < path.Count - 1; j++)
{
var initVehLatitude = path[j].X;
var initVehLongitude = path[j].Y;
distanceTraveled += 0.05;
bearing = HaversineFormula.Bearing(move.Item1, move.Item2, path[j + 1].X, path[j + 1].Y);
move = HaversineFormula.CalculateNewSetOfPoints(initVehLatitude, initVehLongitude, bearing, distanceTraveled);
data = $"{vehiclesOnLine[i].VehicleID},{move.Item1},{move.Item2},{vehiclesOnLine[i].TransportLineID}|";
if (data.EndsWith("|"))
{
data = data.Substring(0, data.Length - 1);
}
var hubContext = GlobalHost.ConnectionManager.GetHubContext <VehicleHub>();
hubContext.Clients.All.newPositions(data);
Thread.Sleep(2000);
}
}
}
return(Ok());
}
private void ReturnMeasurementValues()
{
ModifiedPythagorousResultTxtBx.Text = ModifiedPythagoras.Measure(StartLocationInDegrees, EndLocationInDegrees).ToString();
GreaterCircleResultTxtBx.Text = GreaterCircle.Measure(StartLocationInRadian, EndLocationInRadian, EarthRadius).ToString();
HaversineFormulaResultTxtBx.Text = HaversineFormula.Measure(StartLocationInRadian, EndLocationInRadian, EarthRadius).ToString();
}
private async Task GetGeofenceStateChangedReports(Geoposition pos)
{
_geofenceBackgroundEvents.Clear();
FillEventCollectionWithExistingEvents();
GeofenceMonitor monitor = GeofenceMonitor.Current;
Geoposition posLastKnown = monitor.LastKnownGeoposition;
Windows.Globalization.Calendar calendar = new Windows.Globalization.Calendar();
Windows.Globalization.DateTimeFormatting.DateTimeFormatter formatterLongTime;
formatterLongTime = new Windows.Globalization.DateTimeFormatting.DateTimeFormatter("{hour.integer}:{minute.integer(2)}:{second.integer(2)}", new[] { "hr-HR" }, "HR", Windows.Globalization.CalendarIdentifiers.Gregorian, Windows.Globalization.ClockIdentifiers.TwentyFourHour);
bool eventOfInterest = true;
// NOTE TO DEVELOPER:
// Registered geofence events can be filtered out if the
// geofence event time is stale.
var eventDateTime = pos.Coordinate.Timestamp;
calendar.SetToNow();
var nowDateTime = calendar.GetDateTime();
var diffTimeSpan = nowDateTime - eventDateTime;
var deltaInSeconds = diffTimeSpan.TotalSeconds;
if (deltaInSeconds > 120)
{
eventOfInterest = false;
}
if (eventOfInterest)
{
// NOTE TO DEVELOPER:
// This event can be filtered out if the
// geofence event location is too far away.
var distance = 0.0d;
if ((posLastKnown.Coordinate.Point.Position.Latitude != pos.Coordinate.Point.Position.Latitude) ||
(posLastKnown.Coordinate.Point.Position.Longitude != pos.Coordinate.Point.Position.Longitude))
{
distance = new HaversineFormula().Distance(posLastKnown.Coordinate.Point.Position, pos.Coordinate.Point.Position, HaversineFormula.DistanceType.Kilometers);
// NOTE TO DEVELOPER:
// Use an algorithm like the Haversine formula or Vincenty's formulae to determine
// the distance between the current location (pos.Coordinate)
// and the location of the geofence event (latitudeEvent/longitudeEvent).
// If too far apart set eventOfInterest to false to
// filter the event out.
}
if (eventOfInterest)
{
string geofenceItemEvent = null;
int numEventsOfInterest = 0;
// Retrieve a vector of state change reports
var reports = GeofenceMonitor.Current.ReadReports();
foreach (var report in reports)
{
GeofenceState state = report.NewState;
geofenceItemEvent = report.Geofence.Id + " " + formatterLongTime.Format(eventDateTime);
if (state == GeofenceState.Removed)
{
GeofenceRemovalReason reason = report.RemovalReason;
if (reason == GeofenceRemovalReason.Expired)
{
geofenceItemEvent += " (Removed/Expired)";
}
else if (reason == GeofenceRemovalReason.Used)
{
geofenceItemEvent += " (Removed/Used)";
}
}
else if (state == GeofenceState.Entered)
{
geofenceItemEvent += " (Entered)";
}
else if (state == GeofenceState.Exited)
{
geofenceItemEvent += " (Exited)";
}
geofenceItemEvent += $" - {deltaInSeconds}";
geofenceItemEvent += $"\nDistance - {distance}";
AddGeofenceEvent(geofenceItemEvent);
++numEventsOfInterest;
var userLocation = new UserLocation()
{
Latitude = report.Geoposition.Coordinate.Point.Position.Latitude,
Longitude = report.Geoposition.Coordinate.Point.Position.Longitude,
Name = report.Geofence.Id,
UpdatedUtc = eventDateTime.UtcDateTime,
Status = (LocationStatus)(int)state
};
await UploadDataToCloud(userLocation);
}
if (eventOfInterest == true && numEventsOfInterest != 0)
{
SaveExistingEvents();
// NOTE: Other notification mechanisms can be used here, such as Badge and/or Tile updates.
//DoToast(numEventsOfInterest, geofenceItemEvent);
}
}
}
}
