摘要： 原创文章，转载请注明出处！第一步：计算三维空间内两条弧段的距离d，We first consider two infinite lines L1: P(s) = P0 + s (P1-P0) = P0 + su and L2: Q(t) = Q0 + t (Q1-Q0) = Q0 + tv. Let w(s,t) = P(s)-Q(t) be a vector between points on the two lines. We want to find the w(s,t) that has a minimum length for all s and t. This can be com 阅读全文