数学基础

求两个线段的交点 12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273#include <iostream>struct Point { double x; double y;};bool is_intersection(Point A, Point B, Point C, Point D) { // 计算向量 AB 和 AC 的叉积 double c1 = (B.x - A.x) * (C.y - A.y) - (B.y - A.y) * (C.x - A.x); // 计算向量 AB 和 AD 的叉积 double c2 = (B.x - A.x) * (D.y - A.y) - (B.y - A.y) * (D.x - A.x); // 计算向量 CD 和 CA 的叉积 double c3 = (D.x ...