/// <summary> /// Convert this latitude and longitude into an OSGB (Ordnance Survey of Great /// Britain) grid reference. /// </summary> /// <param name="ll"> The latitude and longitude. </param> /// <exception cref="ArgumentException"> If the northing or easting are out of range </exception> public OsRef(LatLng ll) : base(OSGB36Datum.Instance) { ll.ToDatum(OSGB36Datum.Instance); var airy1830 = Airy1830Ellipsoid.Instance; var OSGB_F0 = 0.9996012717; var N0 = -100000.0; var E0 = 400000.0; var phi0 = Util.ToRadians(49.0); var lambda0 = Util.ToRadians(-2.0); var a = airy1830.SemiMajorAxis; var b = airy1830.SemiMinorAxis; var eSquared = airy1830.EccentricitySquared; var phi = Util.ToRadians(ll.Latitude); var lambda = Util.ToRadians(ll.Longitude); var E = 0.0; var N = 0.0; var n = (a - b) / (a + b); var v = a * OSGB_F0 * Math.Pow(1.0 - eSquared * Util.sinSquared(phi), -0.5); var rho = a * OSGB_F0 * (1.0 - eSquared) * Math.Pow(1.0 - eSquared * Util.sinSquared(phi), -1.5); var etaSquared = v / rho - 1.0; var M = b * OSGB_F0 * ((1 + n + 5.0 / 4.0 * n * n + 5.0 / 4.0 * n * n * n) * (phi - phi0) - (3 * n + 3 * n * n + 21.0 / 8.0 * n * n * n) * Math.Sin(phi - phi0) * Math.Cos(phi + phi0) + (15.0 / 8.0 * n * n + 15.0 / 8.0 * n * n * n) * Math.Sin(2.0 * (phi - phi0)) * Math.Cos(2.0 * (phi + phi0)) - 35.0 / 24.0 * n * n * n * Math.Sin(3.0 * (phi - phi0)) * Math.Cos(3.0 * (phi + phi0))); var I = M + N0; var II = v / 2.0 * Math.Sin(phi) * Math.Cos(phi); var III = v / 24.0 * Math.Sin(phi) * Math.Pow(Math.Cos(phi), 3.0) * (5.0 - Util.tanSquared(phi) + 9.0 * etaSquared); var IIIA = v / 720.0 * Math.Sin(phi) * Math.Pow(Math.Cos(phi), 5.0) * (61.0 - 58.0 * Util.tanSquared(phi) + Math.Pow(Math.Tan(phi), 4.0)); var IV = v * Math.Cos(phi); var V = v / 6.0 * Math.Pow(Math.Cos(phi), 3.0) * (v / rho - Util.tanSquared(phi)); var VI = v / 120.0 * Math.Pow(Math.Cos(phi), 5.0) * (5.0 - 18.0 * Util.tanSquared(phi) + Math.Pow(Math.Tan(phi), 4.0) + 14 * etaSquared - 58 * Util.tanSquared(phi) * etaSquared); N = I + II * Math.Pow(lambda - lambda0, 2.0) + III * Math.Pow(lambda - lambda0, 4.0) + IIIA * Math.Pow(lambda - lambda0, 6.0); E = E0 + IV * (lambda - lambda0) + V * Math.Pow(lambda - lambda0, 3.0) + VI * Math.Pow(lambda - lambda0, 5.0); Easting = E; Northing = N; }
/// <summary> /// Create an IrishRef object from the given latitude and longitude. /// </summary> /// <param name="ll"> The latitude and longitude. </param> public IrishRef(LatLng ll) : base(Ireland1965Datum.Instance) { ll.ToDatum(Ireland1965Datum.Instance); var ellipsoid = Datum.ReferenceEllipsoid; var N0 = FALSE_ORIGIN_NORTHING; var E0 = FALSE_ORIGIN_EASTING; var phi0 = Util.ToRadians(FALSE_ORIGIN_LATITUDE); var lambda0 = Util.ToRadians(FALSE_ORIGIN_LONGITUDE); var a = ellipsoid.SemiMajorAxis * SCALE_FACTOR; var b = ellipsoid.SemiMinorAxis * SCALE_FACTOR; var eSquared = ellipsoid.EccentricitySquared; var phi = Util.ToRadians(ll.Latitude); var lambda = Util.ToRadians(ll.Longitude); var E = 0.0; var N = 0.0; var n = (a - b) / (a + b); var v = a * Math.Pow(1.0 - eSquared * Util.sinSquared(phi), -0.5); var rho = a * (1.0 - eSquared) * Math.Pow(1.0 - eSquared * Util.sinSquared(phi), -1.5); var etaSquared = v / rho - 1.0; var M = b * ((1 + n + 5.0 / 4.0 * n * n + 5.0 / 4.0 * n * n * n) * (phi - phi0) - (3 * n + 3 * n * n + 21.0 / 8.0 * n * n * n) * Math.Sin(phi - phi0) * Math.Cos(phi + phi0) + (15.0 / 8.0 * n * n + 15.0 / 8.0 * n * n * n) * Math.Sin(2.0 * (phi - phi0)) * Math.Cos(2.0 * (phi + phi0)) - 35.0 / 24.0 * n * n * n * Math.Sin(3.0 * (phi - phi0)) * Math.Cos(3.0 * (phi + phi0))); var I = M + N0; var II = v / 2.0 * Math.Sin(phi) * Math.Cos(phi); var III = v / 24.0 * Math.Sin(phi) * Math.Pow(Math.Cos(phi), 3.0) * (5.0 - Util.tanSquared(phi) + 9.0 * etaSquared); var IIIA = v / 720.0 * Math.Sin(phi) * Math.Pow(Math.Cos(phi), 5.0) * (61.0 - 58.0 * Util.tanSquared(phi) + Math.Pow(Math.Tan(phi), 4.0)); var IV = v * Math.Cos(phi); var V = v / 6.0 * Math.Pow(Math.Cos(phi), 3.0) * (v / rho - Util.tanSquared(phi)); var VI = v / 120.0 * Math.Pow(Math.Cos(phi), 5.0) * (5.0 - 18.0 * Util.tanSquared(phi) + Math.Pow(Math.Tan(phi), 4.0) + 14 * etaSquared - 58 * Util.tanSquared(phi) * etaSquared); N = I + II * Math.Pow(lambda - lambda0, 2.0) + III * Math.Pow(lambda - lambda0, 4.0) + IIIA * Math.Pow(lambda - lambda0, 6.0); E = E0 + IV * (lambda - lambda0) + V * Math.Pow(lambda - lambda0, 3.0) + VI * Math.Pow(lambda - lambda0, 5.0); Easting = E; Northing = N; }
/// <summary> /// Convert this latitude and longitude into an OSGB (Ordnance Survey of Great /// Britain) grid reference. /// </summary> /// <param name="ll">The latitude and longitude.</param> /// <exception cref="ArgumentException">If the northing or easting are out of range</exception> public OSRef(LatLng ll) : base(OSGB36Datum.Instance) { ll.ToDatum(OSGB36Datum.Instance); Airy1830Ellipsoid airy1830 = Airy1830Ellipsoid.Instance; double OSGB_F0 = 0.9996012717; double N0 = -100000.0; double E0 = 400000.0; double phi0 = Util.ToRadians(49.0); double lambda0 = Util.ToRadians(-2.0); double a = airy1830.SemiMajorAxis; double b = airy1830.SemiMinorAxis; double eSquared = airy1830.EccentricitySquared; double phi = Util.ToRadians(ll.Latitude); double lambda = Util.ToRadians(ll.Longitude); double E = 0.0; double N = 0.0; double n = (a - b) / (a + b); double v = a * OSGB_F0 * Math.Pow(1.0 - eSquared * Util.sinSquared(phi), -0.5); double rho = a * OSGB_F0 * (1.0 - eSquared) * Math.Pow(1.0 - eSquared * Util.sinSquared(phi), -1.5); double etaSquared = (v / rho) - 1.0; double M = (b * OSGB_F0) * (((1 + n + ((5.0 / 4.0) * n * n) + ((5.0 / 4.0) * n * n * n)) * (phi - phi0)) - (((3 * n) + (3 * n * n) + ((21.0 / 8.0) * n * n * n)) * Math.Sin(phi - phi0) * Math.Cos(phi + phi0)) + ((((15.0 / 8.0) * n * n) + ((15.0 / 8.0) * n * n * n)) * Math.Sin(2.0 * (phi - phi0)) * Math.Cos(2.0 * (phi + phi0))) - (((35.0 / 24.0) * n * n * n) * Math.Sin(3.0 * (phi - phi0)) * Math.Cos(3.0 * (phi + phi0)))); double I = M + N0; double II = (v / 2.0) * Math.Sin(phi) * Math.Cos(phi); double III = (v / 24.0) * Math.Sin(phi) * Math.Pow(Math.Cos(phi), 3.0) * (5.0 - Util.tanSquared(phi) + (9.0 * etaSquared)); double IIIA = (v / 720.0) * Math.Sin(phi) * Math.Pow(Math.Cos(phi), 5.0) * (61.0 - (58.0 * Util.tanSquared(phi)) + Math.Pow(Math.Tan(phi), 4.0)); double IV = v * Math.Cos(phi); double V = (v / 6.0) * Math.Pow(Math.Cos(phi), 3.0) * ((v / rho) - Util.tanSquared(phi)); double VI = (v / 120.0) * Math.Pow(Math.Cos(phi), 5.0) * (5.0 - (18.0 * Util.tanSquared(phi)) + (Math.Pow(Math.Tan(phi), 4.0)) + (14 * etaSquared) - (58 * Util.tanSquared(phi) * etaSquared)); N = I + (II * Math.Pow(lambda - lambda0, 2.0)) + (III * Math.Pow(lambda - lambda0, 4.0)) + (IIIA * Math.Pow(lambda - lambda0, 6.0)); E = E0 + (IV * (lambda - lambda0)) + (V * Math.Pow(lambda - lambda0, 3.0)) + (VI * Math.Pow(lambda - lambda0, 5.0)); Easting = E; Northing = N; }
/// <summary> /// Create an IrishRef object from the given latitude and longitude. /// </summary> /// <param name="ll">The latitude and longitude.</param> public IrishRef(LatLng ll) : base(Ireland1965Datum.Instance) { ll.ToDatum(Ireland1965Datum.Instance); DotNetCoords.Ellipsoid.Ellipsoid ellipsoid = Datum.ReferenceEllipsoid; double N0 = FALSE_ORIGIN_NORTHING; double E0 = FALSE_ORIGIN_EASTING; double phi0 = Util.ToRadians(FALSE_ORIGIN_LATITUDE); double lambda0 = Util.ToRadians(FALSE_ORIGIN_LONGITUDE); double a = ellipsoid.SemiMajorAxis * SCALE_FACTOR; double b = ellipsoid.SemiMinorAxis * SCALE_FACTOR; double eSquared = ellipsoid.EccentricitySquared; double phi = Util.ToRadians(ll.Latitude); double lambda = Util.ToRadians(ll.Longitude); double E = 0.0; double N = 0.0; double n = (a - b) / (a + b); double v = a * Math.Pow(1.0 - eSquared * Util.sinSquared(phi), -0.5); double rho = a * (1.0 - eSquared) * Math.Pow(1.0 - eSquared * Util.sinSquared(phi), -1.5); double etaSquared = (v / rho) - 1.0; double M = b * (((1 + n + ((5.0 / 4.0) * n * n) + ((5.0 / 4.0) * n * n * n)) * (phi - phi0)) - (((3 * n) + (3 * n * n) + ((21.0 / 8.0) * n * n * n)) * Math.Sin(phi - phi0) * Math.Cos(phi + phi0)) + ((((15.0 / 8.0) * n * n) + ((15.0 / 8.0) * n * n * n)) * Math.Sin(2.0 * (phi - phi0)) * Math.Cos(2.0 * (phi + phi0))) - (((35.0 / 24.0) * n * n * n) * Math.Sin(3.0 * (phi - phi0)) * Math.Cos(3.0 * (phi + phi0)))); double I = M + N0; double II = (v / 2.0) * Math.Sin(phi) * Math.Cos(phi); double III = (v / 24.0) * Math.Sin(phi) * Math.Pow(Math.Cos(phi), 3.0) * (5.0 - Util.tanSquared(phi) + (9.0 * etaSquared)); double IIIA = (v / 720.0) * Math.Sin(phi) * Math.Pow(Math.Cos(phi), 5.0) * (61.0 - (58.0 * Util.tanSquared(phi)) + Math.Pow(Math.Tan(phi), 4.0)); double IV = v * Math.Cos(phi); double V = (v / 6.0) * Math.Pow(Math.Cos(phi), 3.0) * ((v / rho) - Util.tanSquared(phi)); double VI = (v / 120.0) * Math.Pow(Math.Cos(phi), 5.0) * (5.0 - (18.0 * Util.tanSquared(phi)) + (Math.Pow(Math.Tan(phi), 4.0)) + (14 * etaSquared) - (58 * Util.tanSquared(phi) * etaSquared)); N = I + (II * Math.Pow(lambda - lambda0, 2.0)) + (III * Math.Pow(lambda - lambda0, 4.0)) + (IIIA * Math.Pow(lambda - lambda0, 6.0)); E = E0 + (IV * (lambda - lambda0)) + (V * Math.Pow(lambda - lambda0, 3.0)) + (VI * Math.Pow(lambda - lambda0, 5.0)); Easting = E; Northing = N; }
/// <summary> /// Convert this latitude and longitude into an OSGB (Ordnance Survey of Great /// Britain) grid reference. /// </summary> /// <param name="ll">The latitude and longitude.</param> /// <exception cref="ArgumentException">If the northing or easting are out of range</exception> public OSRef(LatLng ll) : base(OSGB36Datum.Instance) { ll.ToDatum(OSGB36Datum.Instance); Airy1830Ellipsoid airy1830 = Airy1830Ellipsoid.Instance; const double osgbF0 = 0.9996012717; const double n0 = -100000.0; const double e0 = 400000.0; double phi0 = Util.ToRadians(49.0); double lambda0 = Util.ToRadians(-2.0); double a = airy1830.SemiMajorAxis; double b = airy1830.SemiMinorAxis; double eSquared = airy1830.EccentricitySquared; double phi = Util.ToRadians(ll.Latitude); double lambda = Util.ToRadians(ll.Longitude); double n = (a - b) / (a + b); double v = a * osgbF0 * Math.Pow(1.0 - eSquared * Util.SinSquared(phi), -0.5); double rho = a * osgbF0 * (1.0 - eSquared) * Math.Pow(1.0 - eSquared * Util.SinSquared(phi), -1.5); double etaSquared = (v / rho) - 1.0; double m = (b * osgbF0) * (((1 + n + ((5.0 / 4.0) * n * n) + ((5.0 / 4.0) * n * n * n)) * (phi - phi0)) - (((3 * n) + (3 * n * n) + ((21.0 / 8.0) * n * n * n)) * Math.Sin(phi - phi0) * Math.Cos(phi + phi0)) + ((((15.0 / 8.0) * n * n) + ((15.0 / 8.0) * n * n * n)) * Math.Sin(2.0 * (phi - phi0)) * Math.Cos(2.0 * (phi + phi0))) - (((35.0 / 24.0) * n * n * n) * Math.Sin(3.0 * (phi - phi0)) * Math.Cos(3.0 * (phi + phi0)))); double I = m + n0; double ii = (v / 2.0) * Math.Sin(phi) * Math.Cos(phi); double iii = (v / 24.0) * Math.Sin(phi) * Math.Pow(Math.Cos(phi), 3.0) * (5.0 - Util.TanSquared(phi) + (9.0 * etaSquared)); double iiia = (v / 720.0) * Math.Sin(phi) * Math.Pow(Math.Cos(phi), 5.0) * (61.0 - (58.0 * Util.TanSquared(phi)) + Math.Pow(Math.Tan(phi), 4.0)); double iv = v * Math.Cos(phi); double V = (v / 6.0) * Math.Pow(Math.Cos(phi), 3.0) * ((v / rho) - Util.TanSquared(phi)); double vi = (v / 120.0) * Math.Pow(Math.Cos(phi), 5.0) * (5.0 - (18.0 * Util.TanSquared(phi)) + (Math.Pow(Math.Tan(phi), 4.0)) + (14 * etaSquared) - (58 * Util.TanSquared(phi) * etaSquared)); double N = I + (ii * Math.Pow(lambda - lambda0, 2.0)) + (iii * Math.Pow(lambda - lambda0, 4.0)) + (iiia * Math.Pow(lambda - lambda0, 6.0)); double e = e0 + (iv * (lambda - lambda0)) + (V * Math.Pow(lambda - lambda0, 3.0)) + (vi * Math.Pow(lambda - lambda0, 5.0)); Easting = e; Northing = N; }
/// <summary> /// Create an IrishRef object from the given latitude and longitude. /// </summary> /// <param name="ll">The latitude and longitude.</param> public IrishRef(LatLng ll) : base(Ireland1965Datum.Instance) { ll.ToDatum(Ireland1965Datum.Instance); Ellipsoid.Ellipsoid ellipsoid = Datum.ReferenceEllipsoid; const double n0 = FalseOriginNorthing; const double e0 = FalseOriginEasting; double phi0 = Util.ToRadians(FalseOriginLatitude); double lambda0 = Util.ToRadians(FalseOriginLongitude); double a = ellipsoid.SemiMajorAxis * ScaleFactor; double b = ellipsoid.SemiMinorAxis * ScaleFactor; double eSquared = ellipsoid.EccentricitySquared; double phi = Util.ToRadians(ll.Latitude); double lambda = Util.ToRadians(ll.Longitude); double n = (a - b) / (a + b); double v = a * Math.Pow(1.0 - eSquared * Util.SinSquared(phi), -0.5); double rho = a * (1.0 - eSquared) * Math.Pow(1.0 - eSquared * Util.SinSquared(phi), -1.5); double etaSquared = (v / rho) - 1.0; double m = b * (((1 + n + ((5.0 / 4.0) * n * n) + ((5.0 / 4.0) * n * n * n)) * (phi - phi0)) - (((3 * n) + (3 * n * n) + ((21.0 / 8.0) * n * n * n)) * Math.Sin(phi - phi0) * Math.Cos(phi + phi0)) + ((((15.0 / 8.0) * n * n) + ((15.0 / 8.0) * n * n * n)) * Math.Sin(2.0 * (phi - phi0)) * Math.Cos(2.0 * (phi + phi0))) - (((35.0 / 24.0) * n * n * n) * Math.Sin(3.0 * (phi - phi0)) * Math.Cos(3.0 * (phi + phi0)))); double I = m + n0; double ii = (v / 2.0) * Math.Sin(phi) * Math.Cos(phi); double iii = (v / 24.0) * Math.Sin(phi) * Math.Pow(Math.Cos(phi), 3.0) * (5.0 - Util.TanSquared(phi) + (9.0 * etaSquared)); double iiia = (v / 720.0) * Math.Sin(phi) * Math.Pow(Math.Cos(phi), 5.0) * (61.0 - (58.0 * Util.TanSquared(phi)) + Math.Pow(Math.Tan(phi), 4.0)); double iv = v * Math.Cos(phi); double V = (v / 6.0) * Math.Pow(Math.Cos(phi), 3.0) * ((v / rho) - Util.TanSquared(phi)); double vi = (v / 120.0) * Math.Pow(Math.Cos(phi), 5.0) * (5.0 - (18.0 * Util.TanSquared(phi)) + (Math.Pow(Math.Tan(phi), 4.0)) + (14 * etaSquared) - (58 * Util.TanSquared(phi) * etaSquared)); double N = I + (ii * Math.Pow(lambda - lambda0, 2.0)) + (iii * Math.Pow(lambda - lambda0, 4.0)) + (iiia * Math.Pow(lambda - lambda0, 6.0)); double e = e0 + (iv * (lambda - lambda0)) + (V * Math.Pow(lambda - lambda0, 3.0)) + (vi * Math.Pow(lambda - lambda0, 5.0)); Easting = e; Northing = N; }
/// <summary> /// Create an IrishRef object from the given latitude and longitude. /// </summary> /// <param name="ll"> The latitude and longitude. </param> public IrishRef(LatLng ll) : base(Ireland1965Datum.Instance) { ll.ToDatum(Ireland1965Datum.Instance); var ellipsoid = Datum.ReferenceEllipsoid; var N0 = FALSE_ORIGIN_NORTHING; var E0 = FALSE_ORIGIN_EASTING; var phi0 = Util.ToRadians(FALSE_ORIGIN_LATITUDE); var lambda0 = Util.ToRadians(FALSE_ORIGIN_LONGITUDE); var a = ellipsoid.SemiMajorAxis*SCALE_FACTOR; var b = ellipsoid.SemiMinorAxis*SCALE_FACTOR; var eSquared = ellipsoid.EccentricitySquared; var phi = Util.ToRadians(ll.Latitude); var lambda = Util.ToRadians(ll.Longitude); var E = 0.0; var N = 0.0; var n = (a - b)/(a + b); var v = a *Math.Pow(1.0 - eSquared*Util.sinSquared(phi), -0.5); var rho = a*(1.0 - eSquared) *Math.Pow(1.0 - eSquared*Util.sinSquared(phi), -1.5); var etaSquared = v/rho - 1.0; var M = b *((1 + n + 5.0/4.0*n*n + 5.0/4.0*n*n*n)*(phi - phi0) - (3*n + 3*n*n + 21.0/8.0*n*n*n) *Math.Sin(phi - phi0)*Math.Cos(phi + phi0) + (15.0/8.0*n*n + 15.0/8.0*n*n*n) *Math.Sin(2.0*(phi - phi0))*Math.Cos(2.0*(phi + phi0)) - 35.0/24.0 *n*n*n *Math.Sin(3.0*(phi - phi0))* Math.Cos(3.0*(phi + phi0))); var I = M + N0; var II = v/2.0*Math.Sin(phi)*Math.Cos(phi); var III = v/24.0*Math.Sin(phi)*Math.Pow(Math.Cos(phi), 3.0) *(5.0 - Util.tanSquared(phi) + 9.0*etaSquared); var IIIA = v/720.0*Math.Sin(phi)*Math.Pow(Math.Cos(phi), 5.0) *(61.0 - 58.0*Util.tanSquared(phi) + Math.Pow(Math.Tan(phi), 4.0)); var IV = v*Math.Cos(phi); var V = v/6.0*Math.Pow(Math.Cos(phi), 3.0) *(v/rho - Util.tanSquared(phi)); var VI = v/120.0 *Math.Pow(Math.Cos(phi), 5.0) *(5.0 - 18.0*Util.tanSquared(phi) + Math.Pow(Math.Tan(phi), 4.0) + 14*etaSquared - 58*Util.tanSquared(phi)*etaSquared); N = I + II*Math.Pow(lambda - lambda0, 2.0) + III*Math.Pow(lambda - lambda0, 4.0) + IIIA*Math.Pow(lambda - lambda0, 6.0); E = E0 + IV*(lambda - lambda0) + V*Math.Pow(lambda - lambda0, 3.0) + VI*Math.Pow(lambda - lambda0, 5.0); Easting = E; Northing = N; }
/// <summary> /// Convert this latitude and longitude into an OSGB (Ordnance Survey of Great /// Britain) grid reference. /// </summary> /// <param name="ll"> The latitude and longitude. </param> /// <exception cref="ArgumentException"> If the northing or easting are out of range </exception> public OsRef(LatLng ll) : base(OSGB36Datum.Instance) { ll.ToDatum(OSGB36Datum.Instance); var airy1830 = Airy1830Ellipsoid.Instance; var OSGB_F0 = 0.9996012717; var N0 = -100000.0; var E0 = 400000.0; var phi0 = Util.ToRadians(49.0); var lambda0 = Util.ToRadians(-2.0); var a = airy1830.SemiMajorAxis; var b = airy1830.SemiMinorAxis; var eSquared = airy1830.EccentricitySquared; var phi = Util.ToRadians(ll.Latitude); var lambda = Util.ToRadians(ll.Longitude); var E = 0.0; var N = 0.0; var n = (a - b)/(a + b); var v = a*OSGB_F0 *Math.Pow(1.0 - eSquared*Util.sinSquared(phi), -0.5); var rho = a*OSGB_F0*(1.0 - eSquared) *Math.Pow(1.0 - eSquared*Util.sinSquared(phi), -1.5); var etaSquared = v/rho - 1.0; var M = b*OSGB_F0 *((1 + n + 5.0/4.0*n*n + 5.0/4.0*n*n*n)*(phi - phi0) - (3*n + 3*n*n + 21.0/8.0*n*n*n) *Math.Sin(phi - phi0)*Math.Cos(phi + phi0) + (15.0/8.0*n*n + 15.0/8.0*n*n*n) *Math.Sin(2.0*(phi - phi0))*Math.Cos(2.0*(phi + phi0)) - 35.0/24.0 *n*n*n *Math.Sin(3.0*(phi - phi0))* Math.Cos(3.0*(phi + phi0))); var I = M + N0; var II = v/2.0*Math.Sin(phi)*Math.Cos(phi); var III = v/24.0*Math.Sin(phi)*Math.Pow(Math.Cos(phi), 3.0) *(5.0 - Util.tanSquared(phi) + 9.0*etaSquared); var IIIA = v/720.0*Math.Sin(phi)*Math.Pow(Math.Cos(phi), 5.0) *(61.0 - 58.0*Util.tanSquared(phi) + Math.Pow(Math.Tan(phi), 4.0)); var IV = v*Math.Cos(phi); var V = v/6.0*Math.Pow(Math.Cos(phi), 3.0) *(v/rho - Util.tanSquared(phi)); var VI = v/120.0 *Math.Pow(Math.Cos(phi), 5.0) *(5.0 - 18.0*Util.tanSquared(phi) + Math.Pow(Math.Tan(phi), 4.0) + 14*etaSquared - 58*Util.tanSquared(phi)*etaSquared); N = I + II*Math.Pow(lambda - lambda0, 2.0) + III*Math.Pow(lambda - lambda0, 4.0) + IIIA*Math.Pow(lambda - lambda0, 6.0); E = E0 + IV*(lambda - lambda0) + V*Math.Pow(lambda - lambda0, 3.0) + VI*Math.Pow(lambda - lambda0, 5.0); Easting = E; Northing = N; }