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Moved EquatorialRadius property to MapProjection

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ClemensFischer 2026-01-24 14:58:16 +01:00
parent aaa69a3c03
commit d71d6c6e01
14 changed files with 53 additions and 70 deletions
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41
MapControl/Shared/TransverseMercatorProjectionSnyder.cs
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@ -21,31 +21,12 @@ namespace MapControl
Type = MapProjectionType.TransverseCylindrical;
}
public double Flattening { get; set; } = Wgs84Flattening;
public double ScaleFactor { get; set; } = 0.9996;
public double CentralMeridian { get; set; }
public double FalseEasting { get; set; }
public double FalseNorthing { get; set; }
public double EquatorialRadius
{
get;
set
{
field = value;
M0 = MeridianDistance(LatitudeOfOrigin * Math.PI / 180d);
}
} = Wgs84EquatorialRadius;
public double Flattening
{
get;
set
{
field = value;
M0 = MeridianDistance(LatitudeOfOrigin * Math.PI / 180d);
}
} = Wgs84Flattening;
public double LatitudeOfOrigin
{
get;
@ -62,11 +43,11 @@ namespace MapControl
var e4 = e2 * e2;
var e6 = e2 * e4;
return EquatorialRadius *
((1d - e2 / 4d - 3d / 64d * e4 - 5d / 256d * e6) * phi -
(3d / 8d * e2 + 3d / 32d * e4 + 45d / 1024d * e6) * Math.Sin(2d * phi) +
(15d / 256d * e4 + 45d / 1024d * e6) * Math.Sin(4d * phi) -
35d / 3072d * e6 * Math.Sin(6d * phi)); // (3-21)
return EquatorialRadius * (
(1d - e2 / 4d - e4 * 3d / 64d - e6 * 5d / 256d) * phi -
(e2 * 3d / 8d + e4 * 3d / 32d + e6 * 45d / 1024d) * Math.Sin(2d * phi) +
(e4 * 15d / 256d + e6 * 45d / 1024d) * Math.Sin(4d * phi) -
e6 * 35d / 3072d * Math.Sin(6d * phi)); // (3-21)
}
public override Matrix RelativeScale(double latitude, double longitude)
@ -146,12 +127,12 @@ namespace MapControl
var e14 = e1 * e13;
var M = M0 + (y - FalseNorthing) / ScaleFactor; // (8-20)
var mu = M / (EquatorialRadius * (1d - e2 / 4d - 3d * e4 / 64d - 5d * e6 / 256d)); // (7-19)
var mu = M / (EquatorialRadius * (1d - e2 / 4d - e4 * 3d / 64d - e6 * 5d / 256d)); // (7-19)
var phi1 = mu +
(3d * e1 / 2d - 27d * e13 / 32d) * Math.Sin(2d * mu) +
(21d * e12 / 16d - 55d * e14 / 32d) * Math.Sin(4d * mu) +
151d * e13 / 96d * Math.Sin(6d * mu) +
1097d * e14 / 512d * Math.Sin(8d * mu); // (3-26)
(e1 * 3d / 2d - e13 * 27d / 32d) * Math.Sin(2d * mu) +
(e12 * 21d / 16d - e14 * 55d / 32d) * Math.Sin(4d * mu) +
e13 * 151d / 96d * Math.Sin(6d * mu) +
e14 * 1097d / 512d * Math.Sin(8d * mu); // (3-26)
var sinPhi1 = Math.Sin(phi1);
var cosPhi1 = Math.Cos(phi1);