public void TestChangeDatum()
{
var wgsGeodeticPoint = new Point(51 + 22.0 / 60.0 + 12.72 / 3600.0, 29 + 14.0 / 60.0 + 14.68 / 3600.0);
var nahrawanGeodeticPoint = new Point(51 + 22.0 / 60.0 + 09.42 / 3600.0, 29 + 14.0 / 60.0 + 08.65 / 3600.0);
var result = Transformation.ChangeDatum(wgsGeodeticPoint, Ellipsoids.WGS84, Ellipsoids.FD58);
Assert.AreEqual(nahrawanGeodeticPoint.X, result.X, 1E-4);
Assert.AreEqual(nahrawanGeodeticPoint.Y, result.Y, 1E-3);
}
public void MainTest()
{
var clarke = IRI.Ham.CoordinateSystem.Ellipsoids.Clarke1880Rgs;
double phi0 = 32.5;
double phi1 = 29.65508274166;
double phi2 = 35.31468809166;
double lambda0 = 45.0;
var niocLcc = new LambertConformalConic(clarke, phi1, phi2, lambda0, phi0, 1500000.0, 1166200.0, 0.9987864078);
var xLccNioc = 2047473.33479;
var yLccNioc = 912594.777238;
var xWgs84 = 50.689721;
var yWgs84 = 30.072906;
var xWebMercator = 5642753.9243;
var yWebMercator = 3512924.70491;
var xClarke1880Rgs = 50.689721;
var yClarke1880Rgs = 30.075637;
var wgs84 = niocLcc.ToWgs84Geodetic(new Point(xLccNioc, yLccNioc));
Assert.AreEqual(xWgs84, wgs84.X, 1E-6);
Assert.AreEqual(yWgs84, wgs84.Y, 1E-6);
var clarke1880 = niocLcc.ToGeodetic(new Point(xLccNioc, yLccNioc));
Assert.AreEqual(xClarke1880Rgs, clarke1880.X, 1E-6);
Assert.AreEqual(yClarke1880Rgs, clarke1880.Y, 1E-6);
var webMercator = MapProjects.GeodeticWgs84ToWebMercator(wgs84);
Assert.AreEqual(xWebMercator, webMercator.X, 0.05);
Assert.AreEqual(yWebMercator, webMercator.Y, 0.05);
var clarke1880_2 = Transformation.ChangeDatum(wgs84, Ellipsoids.WGS84, Ellipsoids.Clarke1880Rgs);
Assert.AreEqual(xClarke1880Rgs, clarke1880_2.X, 1E-6);
Assert.AreEqual(yClarke1880Rgs, clarke1880_2.Y, 1E-6);
}
//must be tested
public IPoint FromLocalGeodetic(IPoint point)
{
var geocentricGeodeticPoint = Transformation.ChangeDatum(point, this.Ellipsoid, this.Ellipsoid.GetGeocentricVersion(0));
return(FromGeodetic(geocentricGeodeticPoint));
}
//must be tested
public IPoint ToLocalGeodetic(IPoint point)
{
var geocentricGeodeticPoint = ToGeodetic(point);
return(Transformation.ChangeDatum(geocentricGeodeticPoint, this.Ellipsoid.GetGeocentricVersion(0), this.Ellipsoid));
}
//must be tested
public T FromLocalGeodetic <T>(T point) where T : IPoint, new()
{
var geocentricGeodeticPoint = Transformation.ChangeDatum(point, this.Ellipsoid, this.Ellipsoid.GetGeocentricVersion(0));
return(FromGeodetic(geocentricGeodeticPoint));
}
//must be tested
public T ToLocalGeodetic <T>(T point) where T : IPoint, new()
{
var geocentricGeodeticPoint = ToGeodetic(point);
return(Transformation.ChangeDatum(geocentricGeodeticPoint, this.Ellipsoid.GetGeocentricVersion(0), this.Ellipsoid));
}