题目:http://acm.sdut.edu.cn/sdutoj/problem.php?action=showproblem&problemid=2831 题意:给a, b,  c,  d,  e,  f 6个点 abgh是平行四边形.def是三角形.面积相等. 求点 g, h的坐标 思路: 1. DE*DF/2 = AH*AB; (向量DE叉乘向量DF,除以2, 等于 向量AH叉乘 AB) 2. AH = k AC; (向量AH 等于 k倍的向量AC) 将2式代入1式.就可以求得. #inc…

http://acm.sdut.edu.cn/sdutoj/problem.php?action=showproblem&problemid=2831 题意:已知A,B,C,D,E,F的坐标,求G,H的坐标,并且已知三角形DEF的面积等于平行四边形的面积,点H在AC上. #include <stdio.h> #include <stdlib.h> #include <math.h> #include <iostream> #include <s…

一.有关球体SphereGeometry构造函数参数说明 <1>.SphereGeometry(radius, widthSegments, heightSegments, phiStart, phiLength, thetaStart, thetaLength) radius - sphere radius. Default is 50. 球体半径 默认值 50 widthSegments - number of horizontal segments. Minimum value is 3…

题目描述: Euclid's Game Time Limit: 2 Seconds      Memory Limit: 65536 KB Two players, Stan and Ollie, play, starting with two natural numbers. Stan, the first player, subtracts any positive multiple of the lesser of the two numbers from the greater of t…

Euclid求最大公约数算法 #include <stdio.h> int gcd(int x,int y){ while(x!=y){ if(x>y) x=x-y; else y=y-x; } return x; } int main(int argc, const char *argv[]) { if(3!=argc){ printf("Usage:<a,out> num1 num2\n"); return -1; } printf("%d\…

关于几何服务 几何服务用于辅助应用程序执行各种几何计算,如缓冲区.简化.面积和长度计算以及投影.在 ArcGIS Server 管理器中启动几何服务之后,您才能够在应用程序开发过程中使用该服务. 问题及解决方案大致描述: 在使用几何服务的cut功能时出现错误.对于某些线要素(如,可供测试的修改前的要素)无法裁剪.后经测试找到问题原因,修改后的线要素. 如图,弯弯曲曲的线要素为裁剪目标(Target Geometries),直线要素为裁剪(Cutter).箭头所指为问题所在. 如下两图将 裁剪目标…

几何服务,cut功能测试,输入要素target(修改后)内容. {"displayFieldName":"","fieldAliases":{"FID":"FID","Id":"Id","Shape_Length":"Shape_Length"},"geometryType":"esriGeomet…

几何服务,cut功能测试,输入要素target(修改前)内容. {"geometryType":"esriGeometryPolyline","geometries":[{"paths":[[[12449108.967500001,3975003.0829000026],[12448956.5808,3975263.951899998],[12448888.1684,3975553.0798999965],[12449105.…

Euclid's Game Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 3174    Accepted Submission(s): 1474 Problem Description Two players, Stan and Ollie, play, starting with two natural numbers. Stan,…

Euclid's Game Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 9033   Accepted: 3695 Description Two players, Stan and Ollie, play, starting with two natural numbers. Stan, the first player, subtracts any positive multiple of the lesser o…