用于多个离散点拟合光滑曲线的，优化了追赶法，这个例子适用于闭合和不闭合两种情况。当时由于工程情况，写的急，代码不好看，但是很好用。为了方便传递参数，我做了一个链表，用时候根据自己情况可以修改，核心算法不动即可。-point for a number of discrete smooth curve fitting, and optimized to catch up with the law applicable to this case is not closed and the closure of two. At that time, because the situation, was the most aggressive, the code does not look good, but good use. To facilitate the transmission parameters, I have done a linked list, when used according to its own circumstances can change, the core algorithm can be fixed.