计算几何

https://www.xht37.com/计算几何-学习笔记/

https://www.cnblogs.com/nietzsche-oier/p/8798540.html

https://www.wjyyy.top/3412.html#i-43

https://blog.csdn.net/qq_40861916/article/details/83541403

https://www.cnblogs.com/xzyxzy/p/10241872.html

https://www.cnblogs.com/xzyxzy/p/10033130.html

https://blog.csdn.net/linxilinxilinxi/article/details/81810944