问题是这样的:界面中有多个分散的圆形或者矩形目标，需要根据它们的连接关系画连接线，连线不能越过非连接的目标，连线可以有交点但是最好不要重合过多，务求有规则好看，能清晰辨别出它们的连接关系。
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https://www.baidu.com/s?ie=utf-8&f=8&rsv_bp=1&rsv_idx=1&tn=baidu&wd=%E7%94%B5%E8%B7%AF%E5%B8%83%E7%BA%BF%E7%AE%97%E6%B3%95&oq=%E7%94%B5%E8%B7%AF%E5%B8%83%E7%BA%BF%E7%AE%97%E6%B3%95&rsv_pq=eaf453e9000cd949&rsv_t=d64aFOvYVPEWBUF4QeGFg90RaUyS8Bg3KnQ7JePwgkRSU4J9bXUctdycU9c&rsv_enter=0&rsv_sug3=62&rsv_sug1=6&rsv_sug4=44275&rsv_sug=1
http://www.docin.com/p-551882564.html
http://wenku.baidu.com/link?url=NO5hi2OYuF33SMJjugxM77Yru4OamtDwK8gnIKuu-mJ2u3vZcuXQXLThETBf4Akvm15fM073Lex2Ey1mei7l0D3_9Fn-Z01l6lJHpAW3plu
http://www.cnblogs.com/dyllove98/archive/2013/06/24/3153252.html
