Point and line segment distance 保存副本 登录注册 a0,a1 标签 1 b0,b1 标签 2 p0,p1 标签 3 y=mx−a0+a1 4 y=nx−p0+p1 5 a0+sb0−a0,a1+sb1−a1 标签 6 s=p0−a0b0−a0+p1−a1b1−...