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Updated azimuthal projections

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ClemensFischer 2026-01-21 12:08:12 +01:00
parent d5ee7bbfc0
commit 1bf4cab071
6 changed files with 93 additions and 39 deletions
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34
MapControl/Shared/MapProjectionFactory.cs
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@ -6,7 +6,7 @@ namespace MapControl
{
public virtual MapProjection GetProjection(string crsId)
{
MapProjection projection = crsId switch
var projection = crsId switch
{
WebMercatorProjection.DefaultCrsId => new WebMercatorProjection(),
WorldMercatorProjection.DefaultCrsId => new WorldMercatorProjection(),
@ -26,17 +26,27 @@ namespace MapControl
return projection ?? throw new NotSupportedException($"MapProjection \"{crsId}\" is not supported.");
}
public MapProjection GetProjectionFromEpsgCode(string crsId) =>
crsId.StartsWith("EPSG:") && int.TryParse(crsId.Substring(5), out int epsgCode) ? GetProjection(epsgCode) : null;
public virtual MapProjection GetProjection(int epsgCode) => epsgCode switch
public virtual MapProjection GetProjection(int epsgCode)
{
var code when code >= Etrs89UtmProjection.FirstZoneEpsgCode && code <= Etrs89UtmProjection.LastZoneEpsgCode => new Etrs89UtmProjection(epsgCode % 100),
var code when code >= Nad27UtmProjection.FirstZoneEpsgCode && code <= Nad27UtmProjection.LastZoneEpsgCode => new Nad27UtmProjection(epsgCode % 100),
var code when code >= Nad83UtmProjection.FirstZoneEpsgCode && code <= Nad83UtmProjection.LastZoneEpsgCode => new Nad83UtmProjection(epsgCode % 100),
var code when code >= Wgs84UtmProjection.FirstZoneNorthEpsgCode && code <= Wgs84UtmProjection.LastZoneNorthEpsgCode => new Wgs84UtmProjection(epsgCode % 100, Hemisphere.North),
var code when code >= Wgs84UtmProjection.FirstZoneSouthEpsgCode && code <= Wgs84UtmProjection.LastZoneSouthEpsgCode => new Wgs84UtmProjection(epsgCode % 100, Hemisphere.South),
_ => null
};
return epsgCode switch
{
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),
_ => null
};
}
protected MapProjection GetProjectionFromEpsgCode(string crsId)
{
return crsId.StartsWith("EPSG:") && int.TryParse(crsId.Substring(5), out int epsgCode) ? GetProjection(epsgCode) : null;
}
}
}