Added Ed50UtmProjection

MapProjections/Shared/Ed50UtmProjection.cs

@@ -0,0 +1,51 @@
+// XAML Map Control - https://github.com/ClemensFischer/XAML-Map-Control
+// © 2022 Clemens Fischer
+// Licensed under the Microsoft Public License (Ms-PL)
+
+using System;
+
+namespace MapControl.Projections
+{
+    public class Ed50UtmProjection : GeoApiProjection
+    {
+        public Ed50UtmProjection(int zone)
+        {
+            SetZone(zone);
+        }
+
+        protected void SetZone(int zone)
+        {
+            if (zone < 28 || zone > 38)
+            {
+                throw new ArgumentException($"Invalid UTM zone {zone}.", nameof(zone));
+            }
+
+            const string wktFormat
+                = "PROJCS[\"ED50 / UTM zone {0}N\","
+                + "GEOGCS[\"ED50\","
+                + "DATUM[\"European_Datum_1950\","
+                + "SPHEROID[\"International 1924\",6378388,297,"
+                + "AUTHORITY[\"EPSG\",\"7022\"]],"
+                + "TOWGS84[-87,-98,-121,0,0,0,0],"
+                + "AUTHORITY[\"EPSG\",\"6230\"]],"
+                + "PRIMEM[\"Greenwich\",0,"
+                + "AUTHORITY[\"EPSG\",\"8901\"]],"
+                + "UNIT[\"degree\",0.0174532925199433,"
+                + "AUTHORITY[\"EPSG\",\"9122\"]],"
+                + "AUTHORITY[\"EPSG\",\"4230\"]],"
+                + "PROJECTION[\"Transverse_Mercator\"],"
+                + "PARAMETER[\"latitude_of_origin\",0],"
+                + "PARAMETER[\"central_meridian\",{1}],"
+                + "PARAMETER[\"scale_factor\",0.9996],"
+                + "PARAMETER[\"false_easting\",500000],"
+                + "PARAMETER[\"false_northing\",0],"
+                + "UNIT[\"metre\",1,"
+                + "AUTHORITY[\"EPSG\",\"9001\"]],"
+                + "AXIS[\"Easting\",EAST],"
+                + "AXIS[\"Northing\",NORTH],"
+                + "AUTHORITY[\"EPSG\",\"230{0}\"]]";
+
+            WKT = string.Format(wktFormat, zone, 6 * zone - 183);
+        }
+    }
+}