Updated MapPolypoint and PolygonCollection

MapControl/Shared/MapPolypoint.cs

@@ -0,0 +1,62 @@
+using System.Collections;
+using System.Collections.Specialized;
+#if WPF
+using System.Windows;
+using System.Windows.Media;
+using PolypointGeometry = System.Windows.Media.StreamGeometry;
+#elif UWP
+using Windows.UI.Xaml;
+using Windows.UI.Xaml.Media;
+using PolypointGeometry = Windows.UI.Xaml.Media.PathGeometry;
+#elif WINUI
+using Microsoft.UI.Xaml;
+using Microsoft.UI.Xaml.Media;
+using PolypointGeometry = Microsoft.UI.Xaml.Media.PathGeometry;
+#elif AVALONIA
+using Avalonia.Media;
+using PolypointGeometry = Avalonia.Media.PathGeometry;
+#endif
+
+namespace MapControl
+{
+    /// <summary>
+    /// Base class of MapPolyline and MapPolygon and MapMultiPolygon.
+    /// </summary>
+    public partial class MapPolypoint
+    {
+        public static readonly DependencyProperty FillRuleProperty =
+            DependencyPropertyHelper.Register<MapPolygon, FillRule>(nameof(FillRule), FillRule.EvenOdd,
+                (polypoint, oldValue, newValue) => ((PolypointGeometry)polypoint.Data).FillRule = newValue);
+
+        public FillRule FillRule
+        {
+            get => (FillRule)GetValue(FillRuleProperty);
+            set => SetValue(FillRuleProperty, value);
+        }
+
+        protected MapPolypoint()
+        {
+            Data = new PolypointGeometry();
+        }
+
+        protected void DataCollectionPropertyChanged(IEnumerable oldValue, IEnumerable newValue)
+        {
+            if (oldValue is INotifyCollectionChanged oldCollection)
+            {
+                oldCollection.CollectionChanged -= DataCollectionChanged;
+            }
+
+            if (newValue is INotifyCollectionChanged newCollection)
+            {
+                newCollection.CollectionChanged += DataCollectionChanged;
+            }
+
+            UpdateData();
+        }
+
+        protected void DataCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
+        {
+            UpdateData();
+        }
+    }
+}