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Fixed MapProjection.Center

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This commit is contained in:
Clemens 2022-03-07 17:28:08 +01:00
parent eb5b76d78a
commit f841e42e39
4 changed files with 15 additions and 21 deletions
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19
MapProjections/Shared/PolarStereographicProjection.cs
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@ -19,14 +19,15 @@ namespace MapControl.Projections
private const double ConvergenceTolerance = 1e-6;
private const int MaxIterations = 10;
public bool IsNorth { get; }
public double ScaleFactor { get; }
public double FalseEasting { get; }
public double FalseNorthing { get; }
public PolarStereographicProjection(string crsId, bool isNorth, double scaleFactor, double falseEasting, double falseNorthing)
public PolarStereographicProjection(bool isNorth, double scaleFactor, double falseEasting, double falseNorthing)
{
CrsId = crsId;
Center = new Location(isNorth ? 90d : -90d, 0d);
Type = MapProjectionType.Azimuthal;
IsNorth = isNorth;
ScaleFactor = scaleFactor;
FalseEasting = falseEasting;
FalseNorthing = falseNorthing;
@ -34,7 +35,7 @@ namespace MapControl.Projections
public override Vector GetRelativeScale(Location location)
{
var lat = Math.Sign(Center.Latitude) * location.Latitude * Math.PI / 180d;
var lat = (IsNorth ? location.Latitude : -location.Latitude) * Math.PI / 180d;
var a = Wgs84EquatorialRadius;
var e = Wgs84Eccentricity;
var s = Math.Sqrt(Math.Pow(1 + e, 1 + e) * Math.Pow(1 - e, 1 - e));
@ -52,7 +53,7 @@ namespace MapControl.Projections
var lat = location.Latitude * Math.PI / 180d;
var lon = location.Longitude * Math.PI / 180d;
if (Center.Latitude > 0d)
if (IsNorth)
{
lon = Math.PI - lon;
}
@ -91,7 +92,7 @@ namespace MapControl.Projections
lat = newLat;
}
if (Center.Latitude > 0d)
if (IsNorth)
{
lon = Math.PI - lon;
}
@ -119,8 +120,9 @@ namespace MapControl.Projections
public const string DefaultCrsId = "EPSG:32661";
public UpsNorthProjection()
: base(DefaultCrsId, true, 0.994, 2e6, 2e6)
: base(true, 0.994, 2e6, 2e6)
{
CrsId = DefaultCrsId;
}
}
@ -132,8 +134,9 @@ namespace MapControl.Projections
public const string DefaultCrsId = "EPSG:32761";
public UpsSouthProjection()
: base(DefaultCrsId, false, 0.994, 2e6, 2e6)
: base(false, 0.994, 2e6, 2e6)
{
CrsId = DefaultCrsId;
}
}
}