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New TransverseMercatorProjection implementation

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ClemensFischer 2024-09-10 22:04:44 +02:00
parent caa25cb471
commit 9c69deb782
9 changed files with 357 additions and 23 deletions
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MapControl/Shared/Etrs89UtmProjection.cs Normal file
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// XAML Map Control - https://github.com/ClemensFischer/XAML-Map-Control
// Copyright © 2024 Clemens Fischer
// Licensed under the Microsoft Public License (Ms-PL)
using System;
namespace MapControl
{
/// <summary>
/// ETRS89 UTM Projection with zone number.
/// </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)
{
if (zone < FirstZone || zone > LastZone)
{
throw new ArgumentException($"Invalid ETRS89 UTM zone {zone}.", nameof(zone));
}
Zone = zone;
CrsId = $"EPSG:{25800 + Zone}";
// GRS 1980
EquatorialRadius = 6378137d;
Flattening = 1d / 298.257222101;
ScaleFactor = 0.9996;
CentralMeridian = Zone * 6d - 183d;
FalseEasting = 5e5;
FalseNorthing = 0d;
}
}
}