实现幕墙分格的：定数等分，定距等分，任意分格，极限等分，定距等分多余分到两边，定距等分多余的分到中间。可对直线、圆弧、多段线进行操作(The realization of curtain wall partition is as follows: fixed number equal division, fixed distance equal division, arbitrary division, limit equal division, fixed distance equal division, Surplus Division is divided to both sides, and redundant division is divided to the middle. It can operate on straight line, arc and multi segment line)