From bad7fc1760981a4385da3a1f33ddd37df565cd92 Mon Sep 17 00:00:00 2001
From: radioman <email@radioman.lt>
Date: Tue, 19 May 2015 12:26:41 +0300
Subject: [PATCH] GMap.NET.WindowsPresentation: WPF couldn't draw GMapRoute and
 GMapPolygon, thx WintelZhao

---
 GMap.NET.WindowsForms/GMap.NET.WindowsForms/GMapMarker.cs | 5 +----
 .../GMap.NET.WindowsPresentation/GMapPolygon.cs           | 8 +++-----
 .../GMap.NET.WindowsPresentation/GMapRoute.cs             | 8 +++-----
 3 files changed, 7 insertions(+), 14 deletions(-)

diff --git a/GMap.NET.WindowsForms/GMap.NET.WindowsForms/GMapMarker.cs b/GMap.NET.WindowsForms/GMap.NET.WindowsForms/GMapMarker.cs
index 564802da..93fba73e 100644
--- a/GMap.NET.WindowsForms/GMap.NET.WindowsForms/GMapMarker.cs
+++ b/GMap.NET.WindowsForms/GMap.NET.WindowsForms/GMapMarker.cs
@@ -109,10 +109,7 @@ public Point LocalPosition
                   {
                      if(!Overlay.Control.HoldInvalidation)
                      {
-                         if (Overlay.Control.Core.Refresh!=null)
-                         {
-                             Overlay.Control.Core.Refresh.Set();
-                         }
+                         Overlay.Control.Invalidate();
                      }
                   }
                }
diff --git a/GMap.NET.WindowsPresentation/GMap.NET.WindowsPresentation/GMapPolygon.cs b/GMap.NET.WindowsPresentation/GMap.NET.WindowsPresentation/GMapPolygon.cs
index c7653a0a..74714270 100644
--- a/GMap.NET.WindowsPresentation/GMap.NET.WindowsPresentation/GMapPolygon.cs
+++ b/GMap.NET.WindowsPresentation/GMap.NET.WindowsPresentation/GMapPolygon.cs
@@ -11,11 +11,7 @@ public class GMapPolygon : GMapMarker, IShapable
         public GMapPolygon(IEnumerable<PointLatLng> points)
         {
             Points.AddRange(points);
-            if (Points.Count > 0)
-            {
-                Position = Points[0];
-                RegenerateShape(null);
-            }
+            RegenerateShape(null);
         }
         
         public override void Clear()
@@ -35,6 +31,8 @@ public virtual void RegenerateShape(GMapControl map)
                  
                 if(Points.Count > 1)
                 {
+                   Position = Points[0];
+                   
                    var localPath = new List<System.Windows.Point>(Points.Count);
                    var offset = Map.FromLatLngToLocal(Points[0]);
                    foreach(var i in Points)
diff --git a/GMap.NET.WindowsPresentation/GMap.NET.WindowsPresentation/GMapRoute.cs b/GMap.NET.WindowsPresentation/GMap.NET.WindowsPresentation/GMapRoute.cs
index fa79851e..01d4a321 100644
--- a/GMap.NET.WindowsPresentation/GMap.NET.WindowsPresentation/GMapRoute.cs
+++ b/GMap.NET.WindowsPresentation/GMap.NET.WindowsPresentation/GMapRoute.cs
@@ -16,11 +16,7 @@ public class GMapRoute : GMapMarker, IShapable
         public GMapRoute(IEnumerable<PointLatLng> points)
         {
             Points.AddRange(points);
-            if (Points.Count > 0)
-            {
-                Position = Points[0];
-                RegenerateShape(null);
-            }
+            RegenerateShape(null);
         }
         
         public override void Clear()
@@ -40,6 +36,8 @@ public virtual void RegenerateShape(GMapControl map)
 
                 if(Points.Count > 1)
                 {
+                   Position = Points[0];
+                    
                    var localPath = new List<System.Windows.Point>(Points.Count);
                    var offset = Map.FromLatLngToLocal(Points[0]);
                    foreach(var i in Points)