这个是三维重建中最常用的面绘制的方法，也叫MARCHING CUBE，比较容易实现，不过效果不如体绘制好-This is the most commonly used three-dimensional reconstruction of surface rendering method is also called MARCHING CUBE, relatively easy to implement, but the effect was not as good rendering

Marching Cube algorithm source code, written using C, to achieve three-dimensional spatial data triangulation in 64 bits