Update examples.

src/Triangle.Examples/Examples/Example1.cs

@@ -11,7 +11,7 @@ namespace TriangleNet.Examples
     /// </summary>
     public class Example1
     {
-        public static void Run(bool print = false)
+        public static bool Run(bool print = false)
         {
             // Generate points.
             var points = Generate.RandomPoints(50, new Rectangle(0, 0, 100, 100));
@@ -26,6 +26,8 @@ namespace TriangleNet.Examples
             var mesh = mesher.Triangulate(points);
 
             if (print) SvgImage.Save(mesh, "example-1.svg", 500);
+
+            return true;
         }
     }
 }

src/Triangle.Examples/Examples/Example10.cs

@@ -18,7 +18,7 @@ namespace TriangleNet.Examples
         /// <summary>
         /// Reads all .poly files from given directory and processes them in parallel.
         /// </summary>
-        public static void Run(string dir)
+        public static bool Run(string dir)
         {
             var files = Directory.EnumerateFiles(dir, "*.poly", SearchOption.AllDirectories);
 
@@ -75,6 +75,8 @@ namespace TriangleNet.Examples
             {
                 Console.WriteLine("   Number of invalid triangulations: {0}", invalid);
             }
+
+            return true;
         }
 
         private static void ProcessMesh(IMesh mesh, MeshResult result)

src/Triangle.Examples/Examples/Example2.cs

@@ -9,7 +9,7 @@
     /// </summary>
     public static class Example2
     {
-        public static void Run(bool print = false)
+        public static bool Run(bool print = false)
         {
             // Generate the input geometry.
             var poly = CreatePolygon();
@@ -21,6 +21,8 @@
             var mesh = poly.Triangulate(quality);
 
             if (print) SvgImage.Save(mesh, "example-2.svg", 500);
+
+            return true;
         }
 
         public static IPolygon CreatePolygon(double h = 0.2)

src/Triangle.Examples/Examples/Example3.cs

@@ -12,12 +12,14 @@ namespace TriangleNet.Examples
     /// </summary>
     public class Example3
     {
-        public static void Run(bool print = false)
+        public static bool Run(bool print = false)
         {
             // Generate mesh.
             var mesh = CreateMesh();
 
             if (print) SvgImage.Save(mesh, "example-3.svg", 500);
+
+            return true;
         }
 
         public static IMesh CreateMesh()

src/Triangle.Examples/Examples/Example4.cs

@@ -12,7 +12,7 @@ namespace TriangleNet.Examples
     /// </summary>
     public class Example4
     {
-        public static void Run(bool print = false)
+        public static bool Run(bool print = false)
         {
             // Generate the input geometry.
             var poly = CreatePolygon();
@@ -42,6 +42,8 @@ namespace TriangleNet.Examples
             smoother.Smooth(mesh, 5);
 
             if (print) SvgImage.Save(mesh, "example-4.svg", 500);
+
+            return true;
         }
 
         public static IPolygon CreatePolygon()

src/Triangle.Examples/Examples/Example5.cs

@@ -13,7 +13,7 @@ namespace TriangleNet.Examples
     /// </summary>
     public static class Example5
     {
-        public static void Run(bool print = false)
+        public static bool Run(bool print = false)
         {
             var mesh = Example3.CreateMesh();
 
@@ -24,6 +24,8 @@ namespace TriangleNet.Examples
             FindBoundary2(mesh);
 
             if (print) SvgImage.Save(mesh, "example-5-2.svg", 500, true, false);
+
+            return true;
         }
 
         /// <summary>

src/Triangle.Examples/Examples/Example6.cs

@@ -12,14 +12,14 @@
     /// </summary>
     public static class Example6
     {
-        public static void Run()
+        public static bool Run()
         {
             // Generate the input geometry.
             var polygon = new Polygon(8, true);
 
             // Two intersecting rectangles.
-            var A = Generate.Rectangle(0.0, 4.0, 4.0, 0.0, 1);
-            var B = Generate.Rectangle(1.0, 5.0, 3.0, 1.0, 2);
+            var A = Generate.Rectangle(0.0, 0.0, 4.0, 4.0, 1);
+            var B = Generate.Rectangle(1.0, 1.0, 4.0, 4.0, 2);
 
             polygon.Add(A);
             polygon.Add(B);
@@ -46,6 +46,8 @@
 
             // The xor of A and B.
             var xor = mesh.Triangles.Where(t => t.Label == 1 || t.Label == 2);
+
+            return true;
         }
     }
 }

src/Triangle.Examples/Examples/Example7.cs

@@ -14,12 +14,12 @@ namespace TriangleNet.Examples
     {
         const double MAX_EDGE_LENGTH = 0.2;
 
-        public static void Run(bool print = false)
+        public static bool Run(bool print = false)
         {
             var poly = new Polygon();
 
             // Generate the input geometry.
-            poly.Add(Generate.Rectangle(0.0, 1.0, 1.0, 0.0));
+            poly.Add(Generate.Rectangle(0.0, 0.0, 1.0, 1.0));
 
             // Set minimum angle quality option, ignoring holes.
             var quality = new QualityOptions()
@@ -42,6 +42,8 @@ namespace TriangleNet.Examples
             }
 
             if (print) SvgImage.Save(mesh, "example-7.svg", 500);
+
+            return true;
         }
 
         static bool MaxEdgeLength(ITriangle tri, double area)

src/Triangle.Examples/Examples/Example8.cs

@@ -12,11 +12,13 @@ namespace TriangleNet.Examples
     /// </summary>
     public class Example8
     {
-        public static void Run()
+        public static bool Run()
         {
             var mesh = (Mesh)Example3.CreateMesh();
 
             FindAdjacencyMatrix(mesh);
+
+            return true;
         }
 
         private static void FindAdjacencyMatrix(Mesh mesh)

src/Triangle.Examples/Examples/Example9.cs

@@ -11,7 +11,7 @@ namespace TriangleNet.Examples
     /// </summary>
     public class Example9
     {
-        public static void Run(bool print = false)
+        public static bool Run(bool print = false)
         {
             var pts = new List<Vertex>
             {
@@ -56,6 +56,8 @@ namespace TriangleNet.Examples
                 // Random rotation.
                 poly = Rotate(pts, Math.PI * r.NextDouble());
             }
+
+            return true;
         }
 
         /// <summary>