https://blog.iphpo.com/categories/php/Recent content in php on 戲中話Hugozh-twherb09638@gmail.com (Herb)herb09638@gmail.com (Herb)Sun, 30 Dec 2018 16:19:29 +0800https://blog.iphpo.com/blog/2018-12/%E5%88%A4%E6%96%B7%E5%85%A9%E7%B7%9A%E6%96%B7%E7%9B%B8%E4%BA%A4/Sat, 29 Dec 2018 16:28:29 +0800herb09638@gmail.com (Herb)https://blog.iphpo.com/blog/2018-12/%E5%88%A4%E6%96%B7%E5%85%A9%E7%B7%9A%E6%96%B7%E7%9B%B8%E4%BA%A4/利用向量積判斷 AB 線段與 CD 線段是否相交