Add examples project.

src/Triangle.Examples/Examples/Example8.cs

@@ -0,0 +1,82 @@
+
+namespace TriangleNet.Examples
+{
+    using System;
+    using System.Collections.Generic;
+    using TriangleNet;
+    using TriangleNet.Meshing.Iterators;
+    using TriangleNet.Tools;
+
+    /// <summary>
+    /// Compute the adjacency matrix of the mesh vertices.
+    /// </summary>
+    public class Example8
+    {
+        public static void Run()
+        {
+            var mesh = (Mesh)Example3.CreateMesh();
+
+            FindAdjacencyMatrix(mesh);
+        }
+
+        private static void FindAdjacencyMatrix(Mesh mesh)
+        {
+            mesh.Renumber();
+
+            var ap = new List<int>(mesh.Vertices.Count); // Column pointers.
+            var ai = new List<int>(4 * mesh.Vertices.Count); // Row indices.
+
+            var circulator = new VertexCirculator(mesh);
+
+            int k = 0;
+
+            foreach (var vertex in mesh.Vertices)
+            {
+                var star = circulator.EnumerateVertices(vertex);
+
+                ap.Add(k);
+
+                // Each vertex is adjacent to itself.
+                ai.Add(vertex.ID);
+                k++;
+
+                foreach (var item in star)
+                {
+                    ai.Add(item.ID);
+                    k++;
+                }
+            }
+
+            ap.Add(k);
+
+            var matrix1 = new AdjacencyMatrix(ap.ToArray(), ai.ToArray());
+            var matrix2 = new AdjacencyMatrix(mesh);
+
+            // Column pointers should be exactly the same.
+            if (!CompareArray(matrix1.ColumnPointers, matrix2.ColumnPointers))
+            {
+                Console.WriteLine("Something's wrong in here ...");
+            }
+        }
+
+        private static bool CompareArray(int[] a, int[] b)
+        {
+            int length = a.Length;
+
+            if (b.Length != length)
+            {
+                return false;
+            }
+
+            for (int i = 0; i < length; i++)
+            {
+                if (a[i] != b[i])
+                {
+                    return false;
+                }
+            }
+
+            return true;
+        }
+    }
+}