Version 4: Upgrade to VS 2017

MapControl/Shared/EquirectangularProjection.cs

@@ -0,0 +1,54 @@
+// XAML Map Control - https://github.com/ClemensFischer/XAML-Map-Control
+// © 2017 Clemens Fischer
+// Licensed under the Microsoft Public License (Ms-PL)
+
+using System;
+#if WINDOWS_UWP
+using Windows.Foundation;
+#else
+using System.Windows;
+#endif
+
+namespace MapControl
+{
+    /// <summary>
+    /// Transforms map coordinates according to the Equirectangular Projection.
+    /// Longitude and Latitude values are transformed identically to X and Y.
+    /// </summary>
+    public class EquirectangularProjection : MapProjection
+    {
+        public EquirectangularProjection()
+            : this("EPSG:4326")
+        {
+        }
+
+        public EquirectangularProjection(string crsId)
+        {
+            CrsId = crsId;
+        }
+
+        public override Point GetMapScale(Location location)
+        {
+            return new Point(
+                ViewportScale / (MetersPerDegree * Math.Cos(location.Latitude * Math.PI / 180d)),
+                ViewportScale / MetersPerDegree);
+        }
+
+        public override Point LocationToPoint(Location location)
+        {
+            return new Point(location.Longitude, location.Latitude);
+        }
+
+        public override Location PointToLocation(Point point)
+        {
+            return new Location(point.Y, point.X);
+        }
+
+        public override Location TranslateLocation(Location location, Point translation)
+        {
+            return new Location(
+                location.Latitude - translation.Y / ViewportScale,
+                location.Longitude + translation.X / ViewportScale);
+        }
+    }
+}