public static WebMercatorPosition ToWebMercator(this RT90Position pos)
{
var calc = new WebMercatorCalculator();
var wgs84 = pos.ToWGS84();
return(new WebMercatorPosition(calc.LatitudeToY(wgs84.Latitude), calc.LongitudeToX(wgs84.Longitude)));
}
[TestCase(6396528, 1267363, 6392120.265, 315499.415, 0)] // Välen, Göteborg
public void ToSweRef99_FromRt90(double lat, double lng, double expectedLat, double expectedLng, int decimals)
{
var pos = new RT90Position(lat, lng);
var converted = PositionConverter.ToSweRef99(pos);
Assert.AreEqual(Math.Round(expectedLat, decimals, MidpointRounding.AwayFromZero), Math.Round(converted.Latitude, decimals, MidpointRounding.AwayFromZero));
Assert.AreEqual(Math.Round(expectedLng, decimals, MidpointRounding.AwayFromZero), Math.Round(converted.Longitude, decimals, MidpointRounding.AwayFromZero));
}
public void WGS84ToRT90()
{
WGS84Position wgsPos = new WGS84Position("N 59º 58' 55.23\" E 017º 50' 06.12\"", WGS84Position.WGS84Format.DegreesMinutesSeconds);
RT90Position rtPos = new RT90Position(wgsPos, RT90Position.RT90Projection.rt90_2_5_gon_v);
// Conversion values from Lantmateriet.se, they convert from DMS only.
// Reference: http://www.lantmateriet.se/templates/LMV_Enkelkoordinattransformation.aspx?id=11500
double xPosFromLM = 6653174.343;
double yPosFromLM = 1613318.742;
Assert.AreEqual(Math.Round(rtPos.Latitude, 3), xPosFromLM);
Assert.AreEqual(Math.Round(rtPos.Longitude, 3), yPosFromLM);
}
public void RT90ToWGS84()
{
RT90Position position = new RT90Position(6583052, 1627548);
WGS84Position wgsPos = position.ToWGS84();
// Values from Hitta.se for the conversion
double latFromHitta = 59.3489;
double lonFromHitta = 18.0473;
double lat = Math.Round(wgsPos.Latitude, 4);
double lon = Math.Round(wgsPos.Longitude, 4);
Assert.AreEqual(latFromHitta, lat);
Assert.AreEqual(lonFromHitta, lon);
// String values from Lantmateriet.se, they convert DMS only.
// Reference: http://www.lantmateriet.se/templates/LMV_Enkelkoordinattransformation.aspx?id=11500
string latDmsStringFromLM = "N 59º 20' 56.09287\"";
string lonDmsStringFromLM = "E 18º 2' 50.34806\"";
Assert.AreEqual(latDmsStringFromLM, wgsPos.LatitudeToString(WGS84Position.WGS84Format.DegreesMinutesSeconds));
Assert.AreEqual(lonDmsStringFromLM, wgsPos.LongitudeToString(WGS84Position.WGS84Format.DegreesMinutesSeconds));
}
public static WGS84Position ToWgs84(this RT90Position pos)
{
return(pos.ToWGS84());
}
public static SWEREF99Position ToSweRef99(this RT90Position pos)
{
return(new SWEREF99Position(pos.ToWGS84(), SWEREF99Position.SWEREFProjection.sweref_99_tm));
}
