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