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Unified map projections

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ClemensFischer 2026-02-01 18:23:03 +01:00
parent 9fe7dccd68
commit 36781140ac
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MapControl/Shared/UtmProjections.cs Normal file
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using System;
namespace MapControl
{
/// <summary>
/// WGS84 Universal Transverse Mercator Projection -
/// EPSG:32601 to EPSG:32660 and EPSG:32701 to EPSG:32760.
/// </summary>
public class Wgs84UtmProjection : TransverseMercatorProjection
{
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; }
public Wgs84UtmProjection(int zone, bool north)
: base(Wgs84EquatorialRadius, Wgs84Flattening, 0.9996, zone, north)
{
if (zone < FirstZone || zone > LastZone)
{
throw new ArgumentException($"Invalid WGS84 UTM zone {zone}.", nameof(zone));
}
Zone = zone;
CrsId = $"EPSG:{(north ? 32600 : 32700) + zone}";
}
}
/// <summary>
/// ETRS89 Universal Transverse Mercator Projection - EPSG:25828 to EPSG:25838.
/// </summary>
public class Etrs89UtmProjection : TransverseMercatorProjection
{
public const int FirstZone = 28;
public const int LastZone = 38;
public const int FirstZoneEpsgCode = 25800 + FirstZone;
public const int LastZoneEpsgCode = 25800 + LastZone;
public int Zone { get; }
public Etrs89UtmProjection(int zone)
: base(6378137d, 1d / 298.257222101, 0.9996, zone) // GRS 1980
{
if (zone < FirstZone || zone > LastZone)
{
throw new ArgumentException($"Invalid ETRS89 UTM zone {zone}.", nameof(zone));
}
Zone = zone;
CrsId = $"EPSG:{25800 + zone}";
}
}
/// <summary>
/// NAD83 Universal Transverse Mercator Projection - EPSG:26901 to EPSG:26923.
/// </summary>
public class Nad83UtmProjection : TransverseMercatorProjection
{
public const int FirstZone = 1;
public const int LastZone = 23;
public const int FirstZoneEpsgCode = 26900 + FirstZone;
public const int LastZoneEpsgCode = 26900 + LastZone;
public int Zone { get; }
public Nad83UtmProjection(int zone)
: base(6378137d, 1d / 298.257222101, 0.9996, zone) // GRS 1980
{
if (zone < FirstZone || zone > LastZone)
{
throw new ArgumentException($"Invalid NAD83 UTM zone {zone}.", nameof(zone));
}
Zone = zone;
CrsId = $"EPSG:{26900 + zone}";
}
}
/// <summary>
/// NAD27 Universal Transverse Mercator Projection - EPSG:26701 to EPSG:26722.
/// </summary>
public class Nad27UtmProjection : TransverseMercatorProjection
{
public const int FirstZone = 1;
public const int LastZone = 22;
public const int FirstZoneEpsgCode = 26700 + FirstZone;
public const int LastZoneEpsgCode = 26700 + LastZone;
public int Zone { get; }
public Nad27UtmProjection(int zone)
: base(6378206.4, 1d / 294.978698213898, 0.9996, zone) // Clarke 1866
{
if (zone < FirstZone || zone > LastZone)
{
throw new ArgumentException($"Invalid NAD27 UTM zone {zone}.", nameof(zone));
}
Zone = zone;
CrsId = $"EPSG:{26700 + zone}";
}
}
}