本源码实现了一个三维空间向量类，该类对空间三维向量进行了，比如加、减，叉乘等基本运算。-The source to achieve a three-dimensional vector space categories, such three-dimensional vector space, such as add, subtract, take fork and other basic computing.

Nothing special. My teacher wanted me to make a sample Vector3D cpp file so here it is.Haven t checked it because it s 2:00AM and I need it to get it to school in 5 hours.

三维点数据运算，用于点云数据中相关点的计算，包括加减乘除等运算(The 3D point data calculation, used to calculate the point cloud data points, including add, subtract, multiply and divide operations)