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);
}
public void TestLccToGeographic()
{
double expectedPhi = 35.0;
double expectedLambda = -75.0;
var result = new LambertConformalConic(
IRI.Ham.CoordinateSystem.Ellipsoids.Clarke1866,
33.0,
45.0,
-96.0,
23.0).ToGeodetic(new Point(1894410.9, 1564649.5));
Assert.AreEqual(result.X, expectedLambda, .00001);
Assert.AreEqual(result.Y, expectedPhi, .00001);
var ellipse = IRI.Ham.CoordinateSystem.Ellipsoids.GRS80;
double phi0 = 52;
double phi1 = 35;
double phi2 = 65;
double lambda0 = 10;
var projection = new LambertConformalConic(ellipse, phi1, phi2, lambda0, phi0);
//China
double x = 10000000 - 4000000;
double y = 4000000 - 2800000;
result = projection.ToGeodetic(new Point(x, y));
Assert.AreEqual(result.X, 85.22674468408002, 0.000001);
Assert.AreEqual(result.Y, 32.27382257394294, 0.000001);
//Canada
x = -800000 - 4000000;
y = 7000000 - 2800000;
result = projection.ToGeodetic(new Point(x, y));
Assert.AreEqual(result.X, -95.34976832367953, 0.000001);
Assert.AreEqual(result.Y, 52.469308415860205, 0.000001);
//Brazil
x = -5000000 - 4000000;
y = -350000 - 2800000;
result = projection.ToGeodetic(new Point(x, y));
Assert.AreEqual(result.X, -52.14245756518865, 0.000001);
Assert.AreEqual(result.Y, -5.873476680963928, 0.000001);
//Autralia
x = 19000000 - 4000000;
y = 9000000 - 2800000;
result = projection.ToGeodetic(new Point(x, y));
Assert.AreEqual(result.X, 132.45309686067716, 0.000001);
Assert.AreEqual(result.Y, -21.744457361769854, 0.000001);
}