Updated MapsforgeTiles projects

MapsforgeTiles/WinUI/MapsforgeTileSource.WinUI.cs

@@ -0,0 +1,30 @@
+using System;
+using System.IO;
+using System.Runtime.InteropServices.WindowsRuntime;
+#if UWP
+using Windows.UI.Xaml.Media.Imaging;
+#elif WINUI
+using Microsoft.UI.Xaml.Media.Imaging;
+#endif
+
+namespace MapControl.MapsforgeTiles
+{
+    public partial class MapsforgeTileSource
+    {
+        private static WriteableBitmap CreateImage(int[] pixels)
+        {
+            var size = (int)Math.Sqrt(pixels.Length);
+            var bitmap = new WriteableBitmap(size, size);
+
+            using var stream = bitmap.PixelBuffer.AsStream();
+            using var writer = new BinaryWriter(stream);
+
+            foreach (var pixel in pixels)
+            {
+                writer.Write(pixel);
+            }
+
+            return bitmap;
+        }
+    }
+}