说明：  TunnelOffice本文档包含:三维点云文件points.txt和C++项目文件CylinderFitting。 2. 本文档通过对三维点云的圆柱拟合,得到圆柱的半径、圆柱轴线单位方向向量和
(This document contains: three-dimensional point cloud file points. txt and C++ project file Cylinder Fitting. 2. In this paper, the radius of the cylinder and the unit direction vector of the axis of the cylinder are obtained by fitting the cylinder of the three-dimensional point cloud.)