Rhino插件开发，演示了如何从一个文件中读取点云图。,Rhino plug-in development, demonstration of how to read a file from the point cloud.

本程序主要实现了点云数据的读取、放大、缩小等操作，学习点云数据得可以看看啦-The program achieved a major point cloud data is read, zoom and other operations, to learn point cloud data too can look at it