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求两直线/线段交点方法集锦

先收集,再补充

向量 http://stackoverflow.com/questions/563198/how-do-you-detect-where-two-line-segments-intersect/565282#

参数方程:http://book.2cto.com/201208/2894.html

定比分点:http://blog.csdn.net/dgq8211/article/details/7952825

解直线方程(行列式):http://www.cnblogs.com/i-gps/archive/2012/06/19/2554992.html

求两直线/线段交点方法集锦