public static void SetDistanceAndAngleGeocacheFromLocation(GAPPSF.Core.Data.Geocache gc, GAPPSF.Core.Data.Location loc)
{
GeodeticMeasurement gm = CalculateDistance(loc.Lat, loc.Lon, gc.Lat, gc.Lon);
gc.DistanceToCenter = (long)gm.EllipsoidalDistance;
gc.AngleToCenter = (int)gm.Azimuth.Degrees;
}
public static GeodeticMeasurement CalculateDistance(double lat1, double lon1, double lat2, double lon2)
{
GlobalCoordinates p1 = new GlobalCoordinates(new Angle(lat1), new Angle(lon1));
GlobalCoordinates p2 = new GlobalCoordinates(new Angle(lat2), new Angle(lon2));
GeodeticCalculator gc = new GeodeticCalculator();
GlobalPosition gp1 = new GlobalPosition(p1);
GlobalPosition gp2 = new GlobalPosition(p2);
GeodeticMeasurement gm = gc.CalculateGeodeticMeasurement(Ellipsoid.WGS84, gp1, gp2);
return(gm);
}
public override object Execute(object[] args, ExecutionContext ctx)
{
string res = "";
ArgumentChecker checker = new ArgumentChecker(this.GetType().Name);
checker.CheckForNumberOfArguments(ref args, 2, null);
Utils.Location ll1 = Utils.Conversion.StringToLocation(args[0].ToString());
Utils.Location ll2 = Utils.Conversion.StringToLocation(args[1].ToString());
if ((ll1 != null) && (ll2 != null))
{
GeodeticMeasurement gm = Utils.Calculus.CalculateDistance(ll1.Lat, ll1.Lon, ll2.Lat, ll2.Lon);
res = gm.Azimuth.Degrees.ToString("0");
}
return(res);
}
public static double ComputeDistance(Waypoint w1, Waypoint w2, out double elevationChange)
{
GlobalCoordinates startCoords = new GlobalCoordinates(w1.Latitude, w1.Longitude);
GlobalCoordinates endCoords = new GlobalCoordinates(w2.Latitude, w2.Longitude);
GeodeticCurve curve = geoCal.CalculateGeodeticCurve(Ellipsoid.WGS84, startCoords, endCoords);
elevationChange = 0;
if (!double.IsNaN(w1.Elevation) && !double.IsNaN(w2.Elevation))
{
elevationChange = w2.Elevation - w1.Elevation;
}
GeodeticMeasurement measurement = new GeodeticMeasurement(curve, elevationChange);
return(measurement.PointToPointDistance);
}
public IList <DerivedPointDto> CreateArc(double radius, SuppliedPointDto centerPoint, SuppliedPointDto startPoint, SuppliedPointDto endPoint)
{
Angle centerLatitude = new Angle(centerPoint.Latitude);
Angle centerLongitude = new Angle(centerPoint.Longitude);
Angle startLatitude = new Angle(startPoint.Latitude);
Angle startLongitude = new Angle(startPoint.Longitude);
Angle endLatitude = new Angle(endPoint.Latitude);
Angle endLongitude = new Angle(endPoint.Longitude);
GlobalCoordinates centerCoordinate = new GlobalCoordinates(centerLatitude, centerLongitude);
GlobalCoordinates startCoordinate = new GlobalCoordinates(startLatitude, startLongitude);
GlobalCoordinates endCoordinate = new GlobalCoordinates(endLatitude, endLongitude);
GlobalPosition centerPosition = new GlobalPosition(centerCoordinate);
GlobalPosition startPosition = new GlobalPosition(startCoordinate);
GlobalPosition endPosition = new GlobalPosition(endCoordinate);
GeodeticMeasurement centerToStartMeasurement = calculator.CalculateGeodeticMeasurement(centerPosition, startPosition);
GeodeticMeasurement centerToEndMeasurement = calculator.CalculateGeodeticMeasurement(centerPosition, endPosition);
// Radius should ensure that it is tolerable (we are going to ingore it in this implementation)
double startDistance = centerToStartMeasurement.PointToPointDistance;
double endDistance = centerToEndMeasurement.PointToPointDistance;
double distanceDelta = Math.Abs(startDistance - endDistance);
double distanceEpsilon = distanceDelta / 10;
Angle startBearing = centerToStartMeasurement.Azimuth;
Angle endBearing = centerToEndMeasurement.Azimuth;
double degreesDelta = Math.Abs(startBearing.Degrees - endBearing.Degrees);
double degreesEpsilon = degreesDelta / 10; // Our angular distribution
IList <DerivedPointDto> arcPoints = new List <DerivedPointDto>();
// We are going to assume that arc derivation is done in a clockwise position.
for (int i = 0; i < 10; i++) // Such that the 10th increment should equate to the end point and the initial the start
{
Angle nextBearing = new Angle(startBearing.Degrees + (degreesEpsilon * (i + 1)));
GlobalCoordinates thetaLocation = calculator.CalculateEndingGlobalCoordinates(centerCoordinate, nextBearing, startDistance + (distanceEpsilon * (i + 1)));
DerivedPointDto thetaPoint = new DerivedPointDto(thetaLocation.Latitude.Degrees, thetaLocation.Longitude.Degrees);
arcPoints.Add(thetaPoint);
}
return(arcPoints);
}
private void calculateAngleAndDegrees()
{
Framework.Data.Location ll1 = Utils.Conversion.StringToLocation(textBox5.Text);
Framework.Data.Location ll2 = Utils.Conversion.StringToLocation(textBox6.Text);
if (ll1 != null && ll2 != null)
{
GeodeticMeasurement gm = Utils.Calculus.CalculateDistance(ll1.Lat, ll1.Lon, ll2.Lat, ll2.Lon);
textBox7.Text = gm.EllipsoidalDistance.ToString("0");
textBox8.Text = (0.0006214 * gm.EllipsoidalDistance).ToString("0.000");
textBox9.Text = gm.Azimuth.Degrees.ToString("0");
}
else
{
textBox7.Text = "";
textBox8.Text = "";
textBox9.Text = "";
}
}
public void TestCalculateGeodeticMeasurement()
{
// instantiate the calculator
GeodeticCalculator geoCalc = new GeodeticCalculator();
// select a reference elllipsoid
Ellipsoid reference = Ellipsoid.WGS84;
// set Pike's Peak position
GlobalPosition pikesPeak = new GlobalPosition(new GlobalCoordinates(Angle.FromDegrees(38.840511), Angle.FromDegrees(-105.0445896)), 4301);
// set Alcatraz Island coordinates
GlobalPosition alcatrazIsland = new GlobalPosition(new GlobalCoordinates(Angle.FromDegrees(37.826389), Angle.FromDegrees(-122.4225)), 0);
// calculate the geodetic measurement
GeodeticMeasurement geoMeasurement = geoCalc.CalculateGeodeticMeasurement(reference, pikesPeak, alcatrazIsland);
Assert.AreEqual(-4301, geoMeasurement.ElevationChangeMeters, 0.001);
Assert.AreEqual(1521788.826, geoMeasurement.PointToPointDistanceMeters, 0.001);
Assert.AreEqual(1521782.748, geoMeasurement.EllipsoidalDistanceMeters, 0.001);
Assert.AreEqual(271.21039153, geoMeasurement.Azimuth.Degrees, StandardTolerance);
Assert.AreEqual(80.38029386, geoMeasurement.ReverseAzimuth.Degrees, StandardTolerance);
}
