Probuilder卡顿

QuadUtility.ToQuads 卡顿

当对复杂网格体(顶点>10000)使用 Probuilderize 命令或者涉及MeshImporter.Import 函数时会卡住很久(几分钟以上)

• 版本
  5.2.2

• 原因
  函数 GetQuadScore 反复调用 mesh.GetVertices()

• 解决
  在外部调用 mesh.GetVertices() 并缓存结果
  原始代码

      Dictionary<EdgeLookup, float> connections = new Dictionary<EdgeLookup, float>();
      for (int i = 0; i < wings.Count; i++)
      {
          using (var it = new WingedEdgeEnumerator(wings[i]))
          {
              while (it.MoveNext())
              {
                  var border = it.Current;
  
                  if (border.opposite != null && !connections.ContainsKey(border.edge))
                  {
                      float score = mesh.GetQuadScore(border, border.opposite);
                      connections.Add(border.edge, score);
                  }
              }
          }
      }
  

  改造后代码

      Dictionary<EdgeLookup, float> connections = new Dictionary<EdgeLookup, float>();
      Vertex[] vertices = mesh.GetVertices();     //  只调用一次
      for (int i = 0; i < wings.Count; i++)
      {
          using (var it = new WingedEdgeEnumerator(wings[i]))
          {
              while (it.MoveNext())
              {
                  var border = it.Current;
  
                  if (border.opposite != null && !connections.ContainsKey(border.edge))
                  {
                      float score = GetQuadScore(vertices, border, border.opposite);
                      connections.Add(border.edge, score);
                  }
              }
          }
      }