AdjacencySets.cs

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using UnityEngine;
using System.Collections;
using System.Collections.Generic;

public class AdjacencySets {
    private HashSet<int>[] vertexArray;
    private static int NBVERT = 65000;
    
    /*
    public AdjacencySets() {
        vertexArray = new HashSet<int>[NBVERT];
        for(int i=0; i<NBVERT; i++) {
            vertexArray[i] = new HashSet<int>();
        }
    }
    */
    
    public AdjacencySets(int nb) {
        NBVERT = nb;
        vertexArray = new HashSet<int>[NBVERT];
        for(int i=0; i<NBVERT; i++) {
            vertexArray[i] = new HashSet<int>();
        }
    }
    
    public HashSet<int> GetAdjacencySet(int vIndex) {
        return vertexArray[vIndex];
    }
    
    
    public void AddAllTriangles(int[] triangles) {
        for(int i=0; i<triangles.Length; i+=3) {
            // Neighbors of vertex i
            vertexArray[triangles[i]].Add(triangles[i+1]);
            vertexArray[triangles[i]].Add(triangles[i+2]);
            
            // Neighbors of vertex i+1
            vertexArray[triangles[i+1]].Add(triangles[i]);
            vertexArray[triangles[i+1]].Add(triangles[i+2]);
            
            // Neighbors of vertex i+2
            vertexArray[triangles[i+2]].Add(triangles[i]);
            vertexArray[triangles[i+2]].Add(triangles[i+1]);
        }
    }
    
    
    
    /*
    public void AddLastNTriangles(int nbTriangles, List<int> triangles) {
        int firstIndex = triangles.Count - 3*nbTriangles;
        for(int i=firstIndex; i<triangles.Count; i+=3) {
            // Neighbors of vertex i
            vertexArray[i].Add(triangles[i+1]);
            vertexArray[i].Add(triangles[i+2]);
            
            // Neighbors of vertex i+1
            vertexArray[i+1].Add(triangles[i]);
            vertexArray[i+1].Add(triangles[i+2]);
            
            // Neighbors of vertex i+1
            vertexArray[i+2].Add(triangles[i]);
            vertexArray[i+2].Add(triangles[i+1]);
        }
    }
    */
}