97 lines
2.6 KiB
C#
97 lines
2.6 KiB
C#
// -----------------------------------------------------------------------
|
|
// <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 TriangleNet.Topology
|
|
{
|
|
using System;
|
|
using TriangleNet.Geometry;
|
|
|
|
/// <summary>
|
|
/// The subsegment data structure.
|
|
/// </summary>
|
|
public 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);
|
|
}
|
|
}
|
|
}
|