导出脚本中 (navMeshTriangulation.indices[i + 1] + 2) 这么写目的是啥

[ycllz]

导出脚本中 (navMeshTriangulation.indices[i + 1] + 2) 这么写目的是啥

NavMeshExport.cs 38行

streamWriter.WriteLine("f " + (navMeshTriangulation.indices[i] + 1) + " " + (navMeshTriangulation.indices[i + 1] + 2) + " " + (navMeshTriangulation.indices[i + 1] + 1));
索引不是从头到尾吗？：streamWriter.WriteLine("f " + (navMeshTriangulation.indices[i] + 1) + " " + (navMeshTriangulation.indices[i + 1] + 1) + " " + (navMeshTriangulation.indices[i + 2] + 1));
每连续三个索引一个三角形？请教。谢谢。