matlab计算任意多边形面积POLYAREA(X,Y)-POLYAREA(X,Y) returns the area of the polygon specified by the vertices in the vectors X and Y.

由点云数据（point cloud）生成网格（mesh）的matlab实现-Converts a pointcloud (unordered vertices) to a mesh of triangles by connecting the nearest 3 points and calculates the normal of each vertex and triangle. Also finds the neighboring triangles of each vertex and