判断线段是否位于第一象限；计算线段长度；判断两条线段是否相交；计算点到线段（直线）的距离；用户交互给出线段和点的坐标-Determine whether the line in the first quadrant calculated length of the line to determine whether the intersection of two segments calculation points to the line (straight line) distance

Flash AS3.0 的Bezier曲线类，可以根据给定的2至4个点确定一条Bezier曲线，并可方便地实现曲线的移动，求曲线与直线，曲线与曲线的交点。-Flash AS3.0 class of Bezier curves, can be given two to four points determine a Bezier curve, the curve can easily achieve the movement of demand curve and a straight line,

在?Webots?模拟平台中，使用?E‐puck?模拟机器人及相应?SDK?，根据每个路口的拥塞情况，进行路线规划，使得机器人可以最快到达 目的地。(The input is divided into the congestion level of the intersection and the length of the road. The map consists of 49 lattice, we follow from left to right, from the bottom to