EPSG Codes & CRS IDs

MapControl/Shared/EquirectangularProjection.cs

@@ -17,9 +17,9 @@ namespace MapControl
     /// </summary>
     public class EquirectangularProjection : MapProjection
     {
-        public const int EpsgCode = 4326;
+        public const string DefaultCrsId = "EPSG:4326";
 
-        public EquirectangularProjection(string crsId = "EPSG:4326")
+        public EquirectangularProjection(string crsId = DefaultCrsId)
         {
             Type = MapProjectionType.NormalCylindrical;
             CrsId = crsId;

MapControl/Shared/MapProjectionFactory.cs

@@ -14,46 +14,25 @@ namespace MapControl
             set => instance = value;
         }
 
-        public virtual MapProjection GetProjection(int epsgCode)
-        {
-            switch (epsgCode)
-            {
-                case WorldMercatorProjection.EpsgCode:
-                    return new WorldMercatorProjection();
-
-                case WebMercatorProjection.EpsgCode:
-                    return new WebMercatorProjection();
-
-                case EquirectangularProjection.EpsgCode:
-                    return new EquirectangularProjection();
-
-                case UpsNorthProjection.EpsgCode:
-                    return new UpsNorthProjection();
-
-                case UpsSouthProjection.EpsgCode:
-                    return new UpsSouthProjection();
-
-                case var c when c >= Etrs89UtmProjection.FirstZoneEpsgCode && c <= Etrs89UtmProjection.LastZoneEpsgCode:
-                    return new Etrs89UtmProjection(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 null;
-            }
-        }
-
         public virtual MapProjection GetProjection(string crsId)
         {
             switch (crsId)
             {
+                case WebMercatorProjection.DefaultCrsId:
+                    return new WebMercatorProjection();
+
+                case WorldMercatorProjection.DefaultCrsId:
+                    return new WorldMercatorProjection();
+
+                case EquirectangularProjection.DefaultCrsId:
+                    return new EquirectangularProjection();
+
+                case UpsNorthProjection.DefaultCrsId:
+                    return new UpsNorthProjection();
+
+                case UpsSouthProjection.DefaultCrsId:
+                    return new UpsSouthProjection();
+
                 case Wgs84AutoUtmProjection.DefaultCrsId:
                     return new Wgs84AutoUtmProjection();
 
@@ -78,5 +57,26 @@ namespace MapControl
                         : null;
             }
         }
+
+        public virtual MapProjection GetProjection(int epsgCode)
+        {
+            switch (epsgCode)
+            {
+                case var c when c >= Etrs89UtmProjection.FirstZoneEpsgCode && c <= Etrs89UtmProjection.LastZoneEpsgCode:
+                    return new Etrs89UtmProjection(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 null;
+            }
+        }
     }
 }

MapControl/Shared/PolarStereographicProjection.cs

@@ -117,9 +117,9 @@ namespace MapControl
     /// </summary>
     public class UpsNorthProjection : PolarStereographicProjection
     {
-        public const int EpsgCode = 32661;
+        public const string DefaultCrsId = "EPSG:32661";
 
-        public UpsNorthProjection(string crsId = "EPSG:32661")
+        public UpsNorthProjection(string crsId = DefaultCrsId)
         {
             CrsId = crsId;
             IsNorth = true;
@@ -131,9 +131,9 @@ namespace MapControl
     /// </summary>
     public class UpsSouthProjection : PolarStereographicProjection
     {
-        public const int EpsgCode = 32761;
+        public const string DefaultCrsId = "EPSG:32761";
 
-        public UpsSouthProjection(string crsId = "EPSG:32761")
+        public UpsSouthProjection(string crsId = DefaultCrsId)
         {
             CrsId = crsId;
             IsNorth = false;

MapControl/Shared/WebMercatorProjection.cs

@@ -15,9 +15,9 @@ namespace MapControl
     /// </summary>
     public class WebMercatorProjection : MapProjection
     {
-        public const int EpsgCode = 3857;
+        public const string DefaultCrsId = "EPSG:3857";
 
-        public WebMercatorProjection(string crsId = "EPSG:3857")
+        public WebMercatorProjection(string crsId = DefaultCrsId)
         {
             Type = MapProjectionType.WebMercator;
             CrsId = crsId;

MapControl/Shared/WorldMercatorProjection.cs

@@ -15,9 +15,9 @@ namespace MapControl
     /// </summary>
     public class WorldMercatorProjection : MapProjection
     {
-        public const int EpsgCode = 3395;
+        public const string DefaultCrsId = "EPSG:3395";
 
-        public WorldMercatorProjection(string crsId = "EPSG:3395")
+        public WorldMercatorProjection(string crsId = DefaultCrsId)
         {
             Type = MapProjectionType.NormalCylindrical;
             CrsId = crsId;

MapProjections/Shared/GeoApiProjectionFactory.cs

@@ -19,18 +19,28 @@ namespace MapControl.Projections
             return factory;
         }
 
-        public Dictionary<int, string> CoordinateSystemWkts { get; } = new Dictionary<int, string>();
+        public override MapProjection GetProjection(string crsId)
+        {
+            switch (crsId)
+            {
+                case MapControl.WebMercatorProjection.DefaultCrsId:
+                    return new WebMercatorProjection();
+
+                case MapControl.WorldMercatorProjection.DefaultCrsId:
+                    return new WorldMercatorProjection();
+
+                case MapControl.Wgs84AutoUtmProjection.DefaultCrsId:
+                    return new Wgs84AutoUtmProjection();
+
+                default:
+                    return base.GetProjection(crsId);
+            }
+        }
 
         public override MapProjection GetProjection(int epsgCode)
         {
             switch (epsgCode)
             {
-                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);
 
@@ -56,16 +66,6 @@ namespace MapControl.Projections
             }
         }
 
-        public override MapProjection GetProjection(string crsId)
+        public Dictionary<int, string> CoordinateSystemWkts { get; } = new Dictionary<int, string>();
-        {
-            switch (crsId)
-            {
-                case Wgs84AutoUtmProjection.DefaultCrsId:
-                    return new Wgs84AutoUtmProjection();
-
-                default:
-                    return base.GetProjection(crsId);
-            }
-        }
     }
 }

MapProjections/Shared/WebMercatorProjection.cs

@@ -18,8 +18,6 @@ namespace MapControl.Projections
     /// </summary>
     public class WebMercatorProjection : GeoApiProjection
     {
-        public const int EpsgCode = 3857;
-
         public WebMercatorProjection()
         {
             CoordinateSystem = ProjectedCoordinateSystem.WebMercator;

MapProjections/Shared/Wgs84UtmProjection.cs

@@ -45,11 +45,9 @@ namespace MapControl.Projections
     /// </summary>
     public class Wgs84AutoUtmProjection : Wgs84UtmProjection
     {
-        public const string DefaultCrsId = "AUTO2:42001";
-
         private readonly string autoCrsId;
 
-        public Wgs84AutoUtmProjection(string crsId = DefaultCrsId)
+        public Wgs84AutoUtmProjection(string crsId = MapControl.Wgs84AutoUtmProjection.DefaultCrsId)
             : base(31, true)
         {
             autoCrsId = crsId;

MapProjections/Shared/WorldMercatorProjection.cs

@@ -17,8 +17,6 @@ namespace MapControl.Projections
     /// </summary>
     public class WorldMercatorProjection : GeoApiProjection
     {
-        public const int EpsgCode = 3395;
-
         public WorldMercatorProjection()
         {
             CoordinateSystemWkt
@@ -43,7 +41,7 @@ namespace MapControl.Projections
                 + "AUTHORITY[\"EPSG\",\"9001\"]],"
                 + "AXIS[\"Easting\",EAST],"
                 + "AXIS[\"Northing\",NORTH],"
-                + $"AUTHORITY[\"EPSG\",\"{EpsgCode}\"]]";
+                + "AUTHORITY[\"EPSG\",\"3395\"]]";
         }
 
         public override Point GetRelativeScale(Location location)