用于点云切片功能的实现，非常好用，可以计算密度、厚度、等内容-For point cloud slicing feature to achieve very easy to use, you can calculate the density, thickness, etc.

点云切片算法，海量点云中切片及其算法，速度快，精度高，非常棒(Point cloud slicing algorithm, massive cloud point slice and its algorithm, fast, high precision, great)