Updated TileSources

MapControl/Shared/BoundingBoxTileSource.cs

@@ -1,62 +0,0 @@
-using System;
-using System.Globalization;
-using System.Text;
-
-namespace MapControl
-{
-    public class BoundingBoxTileSource : UriTileSource
-    {
-        public override Uri GetUri(int zoomLevel, int column, int row)
-        {
-            GetTileBounds(zoomLevel, column, row, out double west, out double south, out double east, out double north);
-
-            return GetUri(west, south, east, north);
-        }
-
-        protected virtual Uri GetUri(double west, double south, double east, double north)
-        {
-            Uri uri = null;
-
-            if (UriTemplate != null)
-            {
-                var w = west.ToString("F2", CultureInfo.InvariantCulture);
-                var e = east.ToString("F2", CultureInfo.InvariantCulture);
-                var s = south.ToString("F2", CultureInfo.InvariantCulture);
-                var n = north.ToString("F2", CultureInfo.InvariantCulture);
-
-                if (UriTemplate.Contains("{bbox}"))
-                {
-                    uri = new Uri(UriTemplate.Replace("{bbox}", $"{w},{s},{e},{n}"));
-                }
-                else
-                {
-                    var uriBuilder = new StringBuilder(UriTemplate);
-
-                    uriBuilder.Replace("{west}", w);
-                    uriBuilder.Replace("{south}", s);
-                    uriBuilder.Replace("{east}", e);
-                    uriBuilder.Replace("{north}", n);
-
-                    uri = new Uri(uriBuilder.ToString());
-                }
-            }
-
-            return uri;
-        }
-
-        /// <summary>
-        /// Gets the bounding box in meters of a standard Web Mercator tile,
-        /// specified by zoom level and grid column and row indices.
-        /// </summary>
-        public static void GetTileBounds(int zoomLevel, int column, int row,
-            out double west, out double south, out double east, out double north)
-        {
-            var tileSize = 360d / (1 << zoomLevel); // tile size in degrees
-
-            west = MapProjection.Wgs84MeterPerDegree * (column * tileSize - 180d);
-            east = MapProjection.Wgs84MeterPerDegree * ((column + 1) * tileSize - 180d);
-            south = MapProjection.Wgs84MeterPerDegree * (180d - (row + 1) * tileSize);
-            north = MapProjection.Wgs84MeterPerDegree * (180d - row * tileSize);
-        }
-    }
-}

MapControl/Shared/TileSource.cs

@@ -1,5 +1,4 @@
 using System;
-using System.Text;
 using System.Threading.Tasks;
 #if WPF
 using System.Windows.Media;
@@ -62,67 +61,7 @@ namespace MapControl
         /// </summary>
         public static TileSource Parse(string uriTemplate)
         {
-            return new UriTileSource { UriTemplate = uriTemplate };
-        }
-    }
-
-    public class UriTileSource : TileSource
-    {
-        private string uriTemplate;
-
-        /// <summary>
-        /// Gets or sets the template string for tile request Uris.
-        /// </summary>
-        public string UriTemplate
-        {
-            get => uriTemplate;
-            set
-            {
-                uriTemplate = value;
-
-                if (uriTemplate != null && uriTemplate.Contains("{s}") && Subdomains == null)
-                {
-                    Subdomains = ["a", "b", "c"]; // default OpenStreetMap subdomains
-                }
-            }
-        }
-
-        public string[] Subdomains { get; set; }
-
-        public override Uri GetUri(int zoomLevel, int column, int row)
-        {
-            Uri uri = null;
-
-            if (UriTemplate != null)
-            {
-                var uriBuilder = new StringBuilder(UriTemplate);
-
-                uriBuilder.Replace("{z}", zoomLevel.ToString());
-                uriBuilder.Replace("{x}", column.ToString());
-                uriBuilder.Replace("{y}", row.ToString());
-
-                if (Subdomains != null && Subdomains.Length > 0)
-                {
-                    uriBuilder.Replace("{s}", Subdomains[(column + row) % Subdomains.Length]);
-                }
-
-                uri = new Uri(uriBuilder.ToString(), UriKind.RelativeOrAbsolute);
-            }
-
-            return uri;
-        }
-
-        public override string ToString()
-        {
-            return UriTemplate;
-        }
-    }
-
-    public class TmsTileSource : UriTileSource
-    {
-        public override Uri GetUri(int zoomLevel, int column, int row)
-        {
-            return base.GetUri(zoomLevel, column, (1 << zoomLevel) - 1 - row);
+            return new UriTileSource(uriTemplate);
         }
     }
 }

MapControl/Shared/UriTileSource.cs

@@ -0,0 +1,49 @@
+using System;
+
+namespace MapControl
+{
+    public class UriTileSource : TileSource
+    {
+        private readonly string uriFormat;
+
+        public UriTileSource(string uriTemplate)
+        {
+            uriFormat = uriTemplate
+                .Replace("{z}", "{0}")
+                .Replace("{x}", "{1}")
+                .Replace("{y}", "{2}")
+                .Replace("{s}", "{3}");
+
+            if (Subdomains == null && uriTemplate.Contains("{s}"))
+            {
+                Subdomains = ["a", "b", "c"]; // default OpenStreetMap subdomains
+            }
+        }
+
+        public string[] Subdomains { get; set; }
+
+        public override Uri GetUri(int zoomLevel, int column, int row)
+        {
+            Uri uri = null;
+
+            if (uriFormat != null)
+            {
+                var uriString = Subdomains?.Length > 0
+                    ? string.Format(uriFormat, zoomLevel, column, row, Subdomains[(column + row) % Subdomains.Length])
+                    : string.Format(uriFormat, zoomLevel, column, row);
+
+                uri = new Uri(uriString, UriKind.RelativeOrAbsolute);
+            }
+
+            return uri;
+        }
+    }
+
+    public class TmsTileSource(string uriTemplate) : UriTileSource(uriTemplate)
+    {
+        public override Uri GetUri(int zoomLevel, int column, int row)
+        {
+            return base.GetUri(zoomLevel, column, (1 << zoomLevel) - 1 - row);
+        }
+    }
+}

MapControl/Shared/WmtsCapabilities.cs

@@ -17,7 +17,7 @@ namespace MapControl
     {
         public string Identifier => identifier;
         public string SupportedCrsId => supportedCrsId;
-        public string UriTemplate => uriTemplate;
+        public string UriTemplate { get; } = uriTemplate.Replace("{TileMatrixSet}", identifier);
         public List<WmtsTileMatrix> TileMatrixes { get; } = tileMatrixes.OrderBy(m => m.Scale).ToList();
     }
 
@@ -236,7 +236,7 @@ namespace MapControl
                 throw new ArgumentException($"No TileMatrix elements found in TileMatrixSet \"{identifier}\".");
             }
 
-            return new WmtsTileMatrixSet(identifier, supportedCrs, uriTemplate.Replace("{TileMatrixSet}", identifier), tileMatrixes);
+            return new WmtsTileMatrixSet(identifier, supportedCrs, uriTemplate, tileMatrixes);
         }
 
         public static WmtsTileMatrix ReadTileMatrix(XElement tileMatrixElement, string supportedCrs)

MapControl/Shared/WmtsTileSource.cs

@@ -1,35 +1,22 @@
 using System;
 using System.Collections.Generic;
-using System.Text;
 
 namespace MapControl
 {
-    public class WmtsTileSource : UriTileSource
+    public class WmtsTileSource(WmtsTileMatrixSet tileMatrixSet) : TileSource
     {
-        private readonly List<WmtsTileMatrix> tileMatrixes;
+        private readonly string uriFormat = tileMatrixSet.UriTemplate
+            .Replace("{TileMatrix}", "{0}")
+            .Replace("{TileCol}", "{1}")
+            .Replace("{TileRow}", "{2}");
 
-        public WmtsTileSource(WmtsTileMatrixSet tileMatrixSet)
-        {
-            UriTemplate = tileMatrixSet.UriTemplate;
-            tileMatrixes = tileMatrixSet.TileMatrixes;
-        }
+        private readonly List<WmtsTileMatrix> tileMatrixes = tileMatrixSet.TileMatrixes;
 
         public override Uri GetUri(int zoomLevel, int column, int row)
         {
-            Uri uri = null;
-
-            if (zoomLevel < tileMatrixes.Count)
-            {
-                var uriBuilder = new StringBuilder(UriTemplate);
-
-                uriBuilder.Replace("{TileMatrix}", tileMatrixes[zoomLevel].Identifier);
-                uriBuilder.Replace("{TileCol}", column.ToString());
-                uriBuilder.Replace("{TileRow}", row.ToString());
-
-                uri = new Uri(uriBuilder.ToString());
-            }
-
-            return uri;
+            return zoomLevel < tileMatrixes.Count
+                ? new Uri(string.Format(uriFormat, tileMatrixes[zoomLevel].Identifier, column, row))
+                : null;
         }
     }
 }