Welding.cs

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

public class Welding {
    
    
    
    private static bool isIn(List<Vector3> vList, Vector3 vertex, float threshold) {
        foreach(Vector3 v in vList) {
            if(Vector3.Distance(v, vertex) <= threshold)
                return true;
        }
        return false;
    }
    
    
    
    
    public static MeshData Weld(int[] triangles, Vector3[] vertices, Vector3 b0, Vector3 b1) {
        Vector3[] verts = vertices;
        VertexTree vertexTree = new VertexTree(b0, b1);
        
        // Build new vertex buffer and remove "duplicate" verticies
        // that are within the given threshold.
        List<Vector3> newVerts = new List<Vector3>();
        
        int vIndex = 0;
        foreach (Vector3 vert in verts) {
            // This adds the vertex to the tree, returns true if it was already there
            if (!vertexTree.FindOrAddVertex(vert, vIndex)) {
                newVerts.Add(vert);
                vIndex++;
            }
        }
        // Rebuild triangles using new verticies
        int[] tris = triangles;
        for (int i = 0; i < tris.Length; ++i) {
            // We need to find the index of the new vertex closest to verts[tris[i]]
            tris[i] = vertexTree.GetIndex(verts[tris[i]]);
        }
        
        int max = -1;
        foreach(int index in tris)
            if (index > max)
                max = index;
        
        MeshData result = new MeshData();
        Debug.Log("GenerateMesh::AutoWeld > Number of new vertices in list, and max triangle index in new triangle array.");
        Debug.Log(newVerts.Count.ToString());
        Debug.Log(max.ToString());
        //Debug.Log(vertices.Length.ToString());
        
        result.triangles = tris; // BEFORE VERTICES!!!
        result.vertices = newVerts.ToArray();
        //mesh.uv = newUVs.ToArray();
        return result;
    }

}