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MapProjection.GridConvergence, rotation instead of Matrix

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ClemensFischer 2026-01-29 21:36:11 +01:00
parent 45b47bbae4
commit 4ad9f2ea2a
15 changed files with 272 additions and 239 deletions
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6
MapProjections/Shared/Ed50UtmProjection.cs
View file

@ -15,6 +15,12 @@ namespace MapControl.Projections
public int Zone { get; }
public Ed50UtmProjection(int zone)
: base(new TransverseMercatorProjection
{
EquatorialRadius = 6378388d,
Flattening = 297,
CentralMeridian = 6 * zone - 183,
})
{
if (zone < FirstZone || zone > LastZone)
{

17
MapProjections/Shared/Etrs89UtmProjection.cs
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@ -1,26 +1,15 @@
using System;
namespace MapControl.Projections
namespace MapControl.Projections
{
/// <summary>
/// ETRS89 Universal Transverse Mercator Projection.
/// ETRS89 Universal Transverse Mercator Projection - EPSG:25828 to EPSG:25838.
/// </summary>
public class Etrs89UtmProjection : ProjNetMapProjection
{
public const int FirstZone = 28;
public const int LastZone = 38;
public const int FirstZoneEpsgCode = 25800 + FirstZone;
public const int LastZoneEpsgCode = 25800 + LastZone;
public int Zone { get; }
public Etrs89UtmProjection(int zone)
: base(new MapControl.Etrs89UtmProjection(zone))
{
if (zone < FirstZone || zone > LastZone)
{
throw new ArgumentException($"Invalid ETRS89 UTM zone {zone}.", nameof(zone));
}
Zone = zone;
CoordinateSystemWkt =
$"PROJCS[\"ETRS89 / UTM zone {zone}N\"," +

17
MapProjections/Shared/Nad27UtmProjection.cs
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@ -1,26 +1,15 @@
using System;
namespace MapControl.Projections
namespace MapControl.Projections
{
/// <summary>
/// NAD27 Universal Transverse Mercator Projection.
/// NAD27 Universal Transverse Mercator Projection - EPSG:26701 to EPSG:26722.
/// </summary>
public class Nad27UtmProjection : ProjNetMapProjection
{
public const int FirstZone = 1;
public const int LastZone = 22;
public const int FirstZoneEpsgCode = 26700 + FirstZone;
public const int LastZoneEpsgCode = 26700 + LastZone;
public int Zone { get; }
public Nad27UtmProjection(int zone)
: base(new MapControl.Nad27UtmProjection(zone))
{
if (zone < FirstZone || zone > LastZone)
{
throw new ArgumentException($"Invalid NAD27 UTM zone {zone}.", nameof(zone));
}
Zone = zone;
CoordinateSystemWkt =
$"PROJCS[\"NAD27 / UTM zone {zone}N\"," +

17
MapProjections/Shared/Nad83UtmProjection.cs
View file

@ -1,26 +1,15 @@
using System;
namespace MapControl.Projections
namespace MapControl.Projections
{
/// <summary>
/// NAD83 Universal Transverse Mercator Projection.
/// NAD83 Universal Transverse Mercator Projection - EPSG:26901 to EPSG:26923.
/// </summary>
public class Nad83UtmProjection : ProjNetMapProjection
{
public const int FirstZone = 1;
public const int LastZone = 23;
public const int FirstZoneEpsgCode = 26900 + FirstZone;
public const int LastZoneEpsgCode = 26900 + LastZone;
public int Zone { get; }
public Nad83UtmProjection(int zone)
: base(new MapControl.Nad83UtmProjection(zone))
{
if (zone < FirstZone || zone > LastZone)
{
throw new ArgumentException($"Invalid NAD83 UTM zone {zone}.", nameof(zone));
}
Zone = zone;
CoordinateSystemWkt =
$"PROJCS[\"NAD83 / UTM zone {zone}N\"," +

24
MapProjections/Shared/ProjNetMapProjection.cs
View file

@ -15,8 +15,11 @@ namespace MapControl.Projections
/// </summary>
public class ProjNetMapProjection : MapProjection
{
protected ProjNetMapProjection()
protected MapProjection FallbackProjection { get; }
protected ProjNetMapProjection(MapProjection fallbackProjection)
{
FallbackProjection = fallbackProjection;
}
public ProjNetMapProjection(string coordinateSystemWkt)
@ -71,11 +74,6 @@ namespace MapControl.Projections
public MathTransform MapToLocationTransform { get; private set; }
public override Matrix RelativeTransform(double latitude, double longitude)
{
return new Matrix(1d, 0d, 0d, 1d, 0d, 0d);
}
public override Point LocationToMap(double latitude, double longitude)
{
if (LocationToMapTransform == null)
@ -99,5 +97,19 @@ namespace MapControl.Projections
return new Location(coordinate[1], coordinate[0]);
}
public override Matrix RelativeTransform(double latitude, double longitude)
{
return FallbackProjection != null
? FallbackProjection.RelativeTransform(latitude, longitude)
: new Matrix(1d, 0d, 0d, 1d, 0d, 0d);
}
public override double GridConvergence(double x, double y)
{
return FallbackProjection != null
? FallbackProjection.GridConvergence(x, y)
: 0d;
}
}
}

20
MapProjections/Shared/ProjNetMapProjectionFactory.cs
View file

@ -47,16 +47,16 @@ namespace MapControl.Projections
{
var c when c is >= Ed50UtmProjection.FirstZoneEpsgCode
and <= Ed50UtmProjection.LastZoneEpsgCode => new Ed50UtmProjection(c % 100),
var c when c is >= Etrs89UtmProjection.FirstZoneEpsgCode
and <= Etrs89UtmProjection.LastZoneEpsgCode => new Etrs89UtmProjection(c % 100),
var c when c is >= Nad27UtmProjection.FirstZoneEpsgCode
and <= Nad27UtmProjection.LastZoneEpsgCode => new Nad27UtmProjection(c % 100),
var c when c is >= Nad83UtmProjection.FirstZoneEpsgCode
and <= Nad83UtmProjection.LastZoneEpsgCode => new Nad83UtmProjection(c % 100),
var c when c is >= Wgs84UtmProjection.FirstZoneNorthEpsgCode
and <= Wgs84UtmProjection.LastZoneNorthEpsgCode => new Wgs84UtmProjection(c % 100, Hemisphere.North),
var c when c is >= Wgs84UtmProjection.FirstZoneSouthEpsgCode
and <= Wgs84UtmProjection.LastZoneSouthEpsgCode => new Wgs84UtmProjection(c % 100, Hemisphere.South),
var c when c is >= MapControl.Etrs89UtmProjection.FirstZoneEpsgCode
and <= MapControl.Etrs89UtmProjection.LastZoneEpsgCode => new Etrs89UtmProjection(c % 100),
var c when c is >= MapControl.Nad27UtmProjection.FirstZoneEpsgCode
and <= MapControl.Nad27UtmProjection.LastZoneEpsgCode => new Nad27UtmProjection(c % 100),
var c when c is >= MapControl.Nad83UtmProjection.FirstZoneEpsgCode
and <= MapControl.Nad83UtmProjection.LastZoneEpsgCode => new Nad83UtmProjection(c % 100),
var c when c is >= MapControl.Wgs84UtmProjection.FirstZoneNorthEpsgCode
and <= MapControl.Wgs84UtmProjection.LastZoneNorthEpsgCode => new Wgs84UtmProjection(c % 100, Hemisphere.North),
var c when c is >= MapControl.Wgs84UtmProjection.FirstZoneSouthEpsgCode
and <= MapControl.Wgs84UtmProjection.LastZoneSouthEpsgCode => new Wgs84UtmProjection(c % 100, Hemisphere.South),
_ => base.GetProjection(epsgCode)
};
}

12
MapProjections/Shared/WebMercatorProjection.cs
View file

@ -1,8 +1,4 @@
using ProjNet.CoordinateSystems;
using System;
#if WPF
using System.Windows.Media;
#endif
namespace MapControl.Projections
{
@ -13,15 +9,9 @@ namespace MapControl.Projections
public class WebMercatorProjection : ProjNetMapProjection
{
public WebMercatorProjection()
: base(new MapControl.WebMercatorProjection())
{
CoordinateSystem = ProjectedCoordinateSystem.WebMercator;
}
public override Matrix RelativeTransform(double latitude, double longitude)
{
var k = 1d / Math.Cos(latitude * Math.PI / 180d); // p.44 (7-3)
return new Matrix(k, 0d, 0d, k, 0d, 0d);
}
}
}

12
MapProjections/Shared/Wgs84UpsProjections.cs
View file

@ -7,6 +7,7 @@ namespace MapControl.Projections
public class Wgs84UpsNorthProjection : ProjNetMapProjection
{
public Wgs84UpsNorthProjection()
: base(new MapControl.Wgs84UpsNorthProjection())
{
CoordinateSystemWkt =
"PROJCS[\"WGS 84 / UPS North (N,E)\"," +
@ -20,16 +21,12 @@ namespace MapControl.Projections
"UNIT[\"metre\",1,AUTHORITY[\"EPSG\",\"9001\"]]," +
"AUTHORITY[\"EPSG\",\"32661\"]]";
}
public override Matrix RelativeTransform(double latitude, double longitude)
{
return PolarStereographicProjection.RelativeScale(Hemisphere.North, Wgs84Flattening, 0.994, latitude, longitude);
}
}
public class Wgs84UpsSouthProjection : ProjNetMapProjection
{
public Wgs84UpsSouthProjection()
: base(new MapControl.Wgs84UpsSouthProjection())
{
CoordinateSystemWkt =
"PROJCS[\"WGS 84 / UPS South (N,E)\"," +
@ -43,10 +40,5 @@ namespace MapControl.Projections
"UNIT[\"metre\",1,AUTHORITY[\"EPSG\",\"9001\"]]," +
"AUTHORITY[\"EPSG\",\"32761\"]]";
}
public override Matrix RelativeTransform(double latitude, double longitude)
{
return PolarStereographicProjection.RelativeScale(Hemisphere.North, Wgs84Flattening, 0.994, latitude, longitude);
}
}
}

26
MapProjections/Shared/Wgs84UtmProjection.cs
View file

@ -1,35 +1,19 @@
using ProjNet.CoordinateSystems;
using System;
namespace MapControl.Projections
{
/// <summary>
/// WGS84 Universal Transverse Mercator Projection.
/// WGS84 Universal Transverse Mercator Projection -
/// EPSG:32601 to EPSG:32660 and EPSG:32701 to EPSG:32760.
/// </summary>
public class Wgs84UtmProjection : ProjNetMapProjection
{
public const int FirstZone = 1;
public const int LastZone = 60;
public const int FirstZoneNorthEpsgCode = 32600 + FirstZone;
public const int LastZoneNorthEpsgCode = 32600 + LastZone;
public const int FirstZoneSouthEpsgCode = 32700 + FirstZone;
public const int LastZoneSouthEpsgCode = 32700 + LastZone;
public int Zone { get; private set; }
public Hemisphere Hemisphere { get; private set; }
public int Zone { get; }
public Hemisphere Hemisphere { get; }
public Wgs84UtmProjection(int zone, Hemisphere hemisphere)
: base(new MapControl.Wgs84UtmProjection(zone, hemisphere))
{
SetZone(zone, hemisphere);
}
protected void SetZone(int zone, Hemisphere hemisphere)
{
if (zone < FirstZone || zone > LastZone)
{
throw new ArgumentException($"Invalid WGS84 UTM zone {zone}.", nameof(zone));
}
Zone = zone;
Hemisphere = hemisphere;
CoordinateSystem = ProjectedCoordinateSystem.WGS84_UTM(zone, hemisphere == Hemisphere.North);

14
MapProjections/Shared/WorldMercatorProjection.cs
View file

@ -1,8 +1,4 @@
#if WPF
using System.Windows.Media;
#endif
namespace MapControl.Projections
namespace MapControl.Projections
{
/// <summary>
/// Elliptical Mercator Projection implemented by setting the WKT property of a ProjNetMapProjection.
@ -11,6 +7,7 @@ namespace MapControl.Projections
public class WorldMercatorProjection : ProjNetMapProjection
{
public WorldMercatorProjection()
: base(new MapControl.WorldMercatorProjection())
{
CoordinateSystemWkt =
"PROJCS[\"WGS 84 / World Mercator\"," +
@ -26,12 +23,5 @@ namespace MapControl.Projections
"AXIS[\"Northing\",NORTH]," +
"AUTHORITY[\"EPSG\",\"3395\"]]";
}
public override Matrix RelativeTransform(double latitude, double longitude)
{
var k = MapControl.WorldMercatorProjection.RelativeScale(latitude);
return new Matrix(k, 0d, 0d, k, 0d, 0d);
}
}
}