Version 4.16.1. Improved manipulation and mouse pan handling

MapControl/Shared/Map.cs

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+// XAML Map Control - https://github.com/ClemensFischer/XAML-Map-Control
+// © 2020 Clemens Fischer
+// Licensed under the Microsoft Public License (Ms-PL)
+
+#if WINDOWS_UWP
+using Windows.UI.Xaml;
+#else
+using System.Windows;
+#endif
+
+namespace MapControl
+{
+    /// <summary>
+    /// MapBase with default input event handling.
+    /// </summary>
+    public partial class Map : MapBase
+    {
+        public static readonly DependencyProperty MouseWheelZoomDeltaProperty = DependencyProperty.Register(
+            nameof(MouseWheelZoomDelta), typeof(double), typeof(Map), new PropertyMetadata(1d));
+
+        /// <summary>
+        /// Gets or sets the amount by which the ZoomLevel property changes during a MouseWheel event.
+        /// The default value is 1.
+        /// </summary>
+        public double MouseWheelZoomDelta
+        {
+            get { return (double)GetValue(MouseWheelZoomDeltaProperty); }
+            set { SetValue(MouseWheelZoomDeltaProperty, value); }
+        }
+
+        private Vector translation;
+        private double rotation;
+        private double scale = 1d;
+        private bool transformPending;
+
+        private void ResetTransform()
+        {
+            translation.X = 0d;
+            translation.Y = 0d;
+            rotation = 0d;
+            scale = 1d;
+            transformPending = false;
+        }
+    }
+}