计算几何——直线交点poj1269

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计算几何——直线交点poj1269

求直线交点还是要推一个公式的.. 见博客https://blog.csdn.net/u013050857/article/details/40923789 还要学一下向量的定点比分法另外poj精度好像卡的厉害,zoj1280就没啥问题 #include<iostream> #include<cstring> #include<cstdio> #include<algorithm> #include<cmath> using namespace…

UVa 11437:Triangle Fun（计算几何综合应用，求直线交点，向量运算，求三角形面积）

Problem ATriangle Fun Input: Standard Input Output: Standard Output In the picture below you can see a triangle ABC. Point D, E and F divides the sides BC, CA and AB into ratio 1:2 respectively. That is CD=2BD, AE=2CE and BF=2AF. A, D; B, E and C, F…

hdu 2528:Area（计算几何，求线段与直线交点 + 求多边形面积）

Area Time Limit: 5000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 225 Accepted Submission(s): 77 Problem Description 电子科大清水河校区是电子科大大力兴建的未来主校区,于07年秋正式迎接学生入住,目前有07.08级本科生及部分研究生在此校区学习.生活.清水河校区位于成都高新西区的中部地带,占…

UVA 11178 Morley's Theorem（旋转+直线交点）

题目链接:http://acm.hust.edu.cn/vjudge/problem/viewProblem.action?id=18543 [思路] 旋转+直线交点第一个计算几何题,照着书上代码打的. [代码] #include<cstdio> #include<cmath> #include<cstring> using namespace std; struct Pt { double x,y; Pt(,):x(x),y(y) {} }; typedef Pt…

POJ_1269_Intersecting Lines_求直线交点

POJ_1269_Intersecting Lines_求直线交点 Description We all know that a pair of distinct points on a plane defines a line and that a pair of lines on a plane will intersect in one of three ways: 1) no intersection because they are parallel, 2) intersect in…

ZOJ 1280 Interesting Lines | 求两直线交点

原题: 求两直线交点思路借鉴于:http://blog.csdn.net/zxy_snow/article/details/6341282 感谢大佬 #include<cstdio> #include<algorithm> #include<cstring> #define eps 1e-8 using namespace std; int T; struct point//点(向量的结构体) { double x,y; point() {}//初始化 point (…

2017 ACM-ICPC乌鲁木齐网络赛 B. Out-out-control cars(计算几何直线相交)

题目描述 Two out-of-control cars crashed within about a half-hour Wednesday afternoon on Deer Park Avenue. This accident alarmed the district government.It jumpstarted a vibrant new technology to predict potential car accidents.Engineers depicted a movin…