Initial commit

Library/PackageCache/com.unity.2d.animation@3.2.6/Runtime/Triangle/Topology/DCEL/Vertex.cs

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+// -----------------------------------------------------------------------
+// <copyright file="Vertex.cs">
+// Triangle.NET code by Christian Woltering, http://triangle.codeplex.com/
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace UnityEngine.U2D.Animation.TriangleNet
+    .Topology.DCEL
+{
+    using System.Collections.Generic;
+
+    internal class Vertex : Animation.TriangleNet.Geometry.Point
+    {
+        internal HalfEdge leaving;
+
+        /// <summary>
+        /// Gets or sets a half-edge leaving the vertex.
+        /// </summary>
+        public HalfEdge Leaving
+        {
+            get { return leaving; }
+            set { leaving = value; }
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Vertex" /> class.
+        /// </summary>
+        /// <param name="x">The x coordinate.</param>
+        /// <param name="y">The y coordinate.</param>
+        public Vertex(double x, double y)
+            : base(x, y)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Vertex" /> class.
+        /// </summary>
+        /// <param name="x">The x coordinate.</param>
+        /// <param name="y">The y coordinate.</param>
+        /// <param name="leaving">A half-edge leaving this vertex.</param>
+        public Vertex(double x, double y, HalfEdge leaving)
+            : base(x, y)
+        {
+            this.leaving = leaving;
+        }
+
+        /// <summary>
+        /// Enumerates all half-edges leaving this vertex.
+        /// </summary>
+        /// <returns></returns>
+        public IEnumerable<HalfEdge> EnumerateEdges()
+        {
+            var edge = this.Leaving;
+            int first = edge.ID;
+
+            do
+            {
+                yield return edge;
+
+                edge = edge.Twin.Next;
+            }
+            while (edge.ID != first);
+        }
+
+        public override string ToString()
+        {
+            return string.Format("V-ID {0}", base.id);
+        }
+    }
+}