ＯｐｅｎＧＬ环境下读入３Ｄ点云，任意角度下鼠标对点云进行框选。(In the OpenGL environment, read the 3D point cloud, and at any angle the mouse can box the point cloud.)

具备点云数据的显示，在显示界面通过鼠标选择需要点并保存。(With the display of point cloud data, the display interface needs to be selected and saved through mouse selection.)