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EPSG Codes & CRS IDs

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ClemensFischer 2024-07-12 13:57:27 +02:00
parent b74e5aaf7a
commit ce6f190bf1
18 changed files with 151 additions and 195 deletions
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95
MapProjections/Shared/GeoApiProjectionFactory.cs
View file

@ -8,75 +8,64 @@ namespace MapControl.Projections
{
public class GeoApiProjectionFactory : MapProjectionFactory
{
public static GeoApiProjectionFactory GetInstance()
{
if (!(Instance is GeoApiProjectionFactory factory))
{
factory = new GeoApiProjectionFactory();
Instance = factory;
}
return factory;
}
public Dictionary<int, string> CoordinateSystemWkts { get; } = new Dictionary<int, string>();
public override MapProjection GetProjection(int epsgCode)
{
MapProjection projection = null;
if (CoordinateSystemWkts.TryGetValue(epsgCode, out string wkt))
switch (epsgCode)
{
projection = new GeoApiProjection(wkt);
case WorldMercatorProjection.EpsgCode:
return new WorldMercatorProjection();
case WebMercatorProjection.EpsgCode:
return new WebMercatorProjection();
case int c when c >= Ed50UtmProjection.FirstZoneEpsgCode && c <= Ed50UtmProjection.LastZoneEpsgCode:
return new Ed50UtmProjection(epsgCode % 100);
case var c when c >= Etrs89UtmProjection.FirstZoneEpsgCode && c <= Etrs89UtmProjection.LastZoneEpsgCode:
return new Etrs89UtmProjection(epsgCode % 100);
case var c when c >= Nad27UtmProjection.FirstZoneEpsgCode && c <= Nad27UtmProjection.LastZoneEpsgCode:
return new Nad27UtmProjection(epsgCode % 100);
case var c when c >= Nad83UtmProjection.FirstZoneEpsgCode && c <= Nad83UtmProjection.LastZoneEpsgCode:
return new Nad83UtmProjection(epsgCode % 100);
case var c when c >= Wgs84UtmProjection.FirstZoneNorthEpsgCode && c <= Wgs84UtmProjection.LastZoneNorthEpsgCode:
return new Wgs84UtmProjection(epsgCode % 100, true);
case var c when c >= Wgs84UtmProjection.FirstZoneSouthEpsgCode && c <= Wgs84UtmProjection.LastZoneSouthEpsgCode:
return new Wgs84UtmProjection(epsgCode % 100, false);
default:
return CoordinateSystemWkts.TryGetValue(epsgCode, out string wkt)
? new GeoApiProjection(wkt)
: base.GetProjection(epsgCode);
}
else
{
switch (epsgCode)
{
case WorldMercatorProjection.DefaultEpsgCode:
projection = new WorldMercatorProjection();
break;
case WebMercatorProjection.DefaultEpsgCode:
projection = new WebMercatorProjection();
break;
case int c when c >= Ed50UtmProjection.FirstZoneEpsgCode && c <= Ed50UtmProjection.LastZoneEpsgCode:
projection = new Ed50UtmProjection(epsgCode % 100);
break;
case var c when c >= Etrs89UtmProjection.FirstZoneEpsgCode && c <= Etrs89UtmProjection.LastZoneEpsgCode:
projection = new Etrs89UtmProjection(epsgCode % 100);
break;
case var c when c >= Nad27UtmProjection.FirstZoneEpsgCode && c <= Nad27UtmProjection.LastZoneEpsgCode:
projection = new Nad27UtmProjection(epsgCode % 100);
break;
case var c when c >= Nad83UtmProjection.FirstZoneEpsgCode && c <= Nad83UtmProjection.LastZoneEpsgCode:
projection = new Nad83UtmProjection(epsgCode % 100);
break;
case var c when c >= Wgs84UtmProjection.FirstZoneNorthEpsgCode && c <= Wgs84UtmProjection.LastZoneNorthEpsgCode:
projection = new Wgs84UtmProjection(epsgCode % 100, true);
break;
case var c when c >= Wgs84UtmProjection.FirstZoneSouthEpsgCode && c <= Wgs84UtmProjection.LastZoneSouthEpsgCode:
projection = new Wgs84UtmProjection(epsgCode % 100, false);
break;
default:
break;
}
}
return projection ?? base.GetProjection(epsgCode);
}
public override MapProjection GetProjection(string crsId)
{
MapProjection projection = null;
switch (crsId)
{
case Wgs84AutoUtmProjection.DefaultCrsId:
projection = new Wgs84AutoUtmProjection();
break;
return new Wgs84AutoUtmProjection();
default:
break;
return base.GetProjection(crsId);
}
return projection ?? base.GetProjection(crsId);
}
}
}

2
MapProjections/Shared/WebMercatorProjection.cs
View file

@ -18,7 +18,7 @@ namespace MapControl.Projections
/// </summary>
public class WebMercatorProjection : GeoApiProjection
{
public const int DefaultEpsgCode = 3857;
public const int EpsgCode = 3857;
public WebMercatorProjection()
{

49
MapProjections/Shared/Wgs84UtmProjection.cs
View file

@ -22,10 +22,6 @@ namespace MapControl.Projections
public int Zone { get; private set; }
public bool IsNorth { get; private set; }
protected Wgs84UtmProjection()
{
}
public Wgs84UtmProjection(int zone, bool north)
{
SetZone(zone, north);
@ -51,40 +47,41 @@ namespace MapControl.Projections
{
public const string DefaultCrsId = "AUTO2:42001";
public Wgs84AutoUtmProjection(bool useZoneCrsId = false)
{
UseZoneCrsId = useZoneCrsId;
UpdateZone();
}
private readonly string autoCrsId;
public bool UseZoneCrsId { get; }
public Wgs84AutoUtmProjection(string crsId = DefaultCrsId)
: base(31, true)
{
autoCrsId = crsId;
if (!string.IsNullOrEmpty(autoCrsId))
{
CrsId = autoCrsId;
}
}
public override Location Center
{
get => base.Center;
set
protected set
{
if (!Equals(base.Center, value))
{
base.Center = value;
UpdateZone();
}
}
}
private void UpdateZone()
{
var lon = Location.NormalizeLongitude(Center.Longitude);
var zone = (int)Math.Floor(lon / 6d) + 31;
var north = Center.Latitude >= 0d;
var lon = Location.NormalizeLongitude(value.Longitude);
var zone = (int)Math.Floor(lon / 6d) + 31;
var north = value.Latitude >= 0d;
if (Zone != zone || IsNorth != north || string.IsNullOrEmpty(CrsId))
{
SetZone(zone, north);
if (Zone != zone || IsNorth != north)
{
SetZone(zone, north);
if (!UseZoneCrsId)
{
CrsId = DefaultCrsId;
if (!string.IsNullOrEmpty(autoCrsId))
{
CrsId = autoCrsId;
}
}
}
}
}

4
MapProjections/Shared/WorldMercatorProjection.cs
View file

@ -17,7 +17,7 @@ namespace MapControl.Projections
/// </summary>
public class WorldMercatorProjection : GeoApiProjection
{
public const int DefaultEpsgCode = 3395;
public const int EpsgCode = 3395;
public WorldMercatorProjection()
{
@ -43,7 +43,7 @@ namespace MapControl.Projections
+ "AUTHORITY[\"EPSG\",\"9001\"]],"
+ "AXIS[\"Easting\",EAST],"
+ "AXIS[\"Northing\",NORTH],"
+ "AUTHORITY[\"EPSG\",\"3395\"]]";
+ $"AUTHORITY[\"EPSG\",\"{EpsgCode}\"]]";
}
public override Point GetRelativeScale(Location location)