Load distinct official cadastral sheet boundaries

Services/MapExportService.cs

@@ -85,7 +85,7 @@ public sealed class MapExportService
     {
         var root = new XElement("gpx",
             new XAttribute("version", "1.1"),
-            new XAttribute("creator", "LME Mappe Catastali 0.4.5"),
+            new XAttribute("creator", "LME Mappe Catastali 0.4.6"),
             new XAttribute(XNamespace.Xmlns + "xsi", "http://www.w3.org/2001/XMLSchema-instance"),
             new XElement("metadata", new XElement("name", name)));
         foreach (var feature in features.EnumerateArray())

Services/OfficialCadastreService.cs

@@ -22,6 +22,34 @@ public sealed class OfficialCadastreService
         double longitude,
         double radiusMeters,
         CancellationToken cancellationToken = default)
+        => await GetFeaturesNearAsync(
+            latitude,
+            longitude,
+            radiusMeters,
+            "CP:CadastralParcel",
+            100,
+            cancellationToken);
+
+    public async Task<string> GetSheetsNearAsync(
+        double latitude,
+        double longitude,
+        double radiusMeters = 10,
+        CancellationToken cancellationToken = default)
+        => await GetFeaturesNearAsync(
+            latitude,
+            longitude,
+            radiusMeters,
+            "CP:CadastralZoning",
+            20,
+            cancellationToken);
+
+    private async Task<string> GetFeaturesNearAsync(
+        double latitude,
+        double longitude,
+        double radiusMeters,
+        string typeName,
+        int count,
+        CancellationToken cancellationToken)
     {
         var meters = Math.Clamp(radiusMeters, 2, 30);
         var deltaLatitude = meters / 111_320d;
@@ -40,11 +68,11 @@ public sealed class OfficialCadastreService
             ["language"] = "ita",
             ["SERVICE"] = "WFS",
             ["VERSION"] = "2.0.0",
-            ["TYPENAMES"] = "CP:CadastralParcel",
+            ["TYPENAMES"] = typeName,
             ["SRSNAME"] = "urn:ogc:def:crs:EPSG::6706",
             ["BBOX"] = bbox,
             ["REQUEST"] = "GetFeature",
-            ["COUNT"] = "100"
+            ["COUNT"] = count.ToString(CultureInfo.InvariantCulture)
         };
 
         var url = WfsEndpoint + "?" + string.Join("&", query.Select(item =>