Initial commit

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

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+// -----------------------------------------------------------------------
+// <copyright file="Segment.cs" company="">
+// Original Triangle code by Jonathan Richard Shewchuk, http://www.cs.cmu.edu/~quake/triangle.html
+// Triangle.NET code by Christian Woltering, http://triangle.codeplex.com/
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace UnityEngine.U2D.Animation.TriangleNet
+    .Topology
+{
+    using System;
+    using Animation.TriangleNet.Geometry;
+
+    /// <summary>
+    /// The subsegment data structure.
+    /// </summary>
+    internal class SubSegment : ISegment
+    {
+        // Hash for dictionary. Will be set by mesh instance.
+        internal int hash;
+
+        internal Osub[] subsegs;
+        internal Vertex[] vertices;
+        internal Otri[] triangles;
+        internal int boundary;
+
+        public SubSegment()
+        {
+            // Four NULL vertices.
+            vertices = new Vertex[4];
+
+            // Set the boundary marker to zero.
+            boundary = 0;
+
+            // Initialize the two adjoining subsegments to be the omnipresent
+            // subsegment.
+            subsegs = new Osub[2];
+
+            // Initialize the two adjoining triangles to be "outer space."
+            triangles = new Otri[2];
+        }
+
+        #region Public properties
+
+        /// <summary>
+        /// Gets the first endpoints vertex id.
+        /// </summary>
+        public int P0
+        {
+            get { return this.vertices[0].id; }
+        }
+
+        /// <summary>
+        /// Gets the seconds endpoints vertex id.
+        /// </summary>
+        public int P1
+        {
+            get { return this.vertices[1].id; }
+        }
+
+        /// <summary>
+        /// Gets the segment boundary mark.
+        /// </summary>
+        public int Label
+        {
+            get { return this.boundary; }
+        }
+
+        #endregion
+
+        /// <summary>
+        /// Gets the segments endpoint.
+        /// </summary>
+        public Vertex GetVertex(int index)
+        {
+            return this.vertices[index]; // TODO: Check range?
+        }
+
+        /// <summary>
+        /// Gets an adjoining triangle.
+        /// </summary>
+        public ITriangle GetTriangle(int index)
+        {
+            return triangles[index].tri.hash == Mesh.DUMMY ? null : triangles[index].tri;
+        }
+
+        public override int GetHashCode()
+        {
+            return this.hash;
+        }
+
+        public override string ToString()
+        {
+            return String.Format("SID {0}", hash);
+        }
+    }
+}