中文说明：在2D环境下，随机产生起始点和终点，以及障碍，然后用快速搜索随机树（RRT）算法来实现，本编码是在原来一个经典样例的基础上，在matlab2009a版本的环境下，本人经过修改而成，并加注注释，保证好用，希望对朋友们有所帮助！
English Description：
In a 2D environment, random start point and end point, as well as obstacles, and then use the fast stochastic tree search (RRT) algorithm to achieve this encoding are a classic example of the original on the basis of, in the context of matlab2009a version, I modified, and raise your comments, ensure good, want to help friends!