A General Polygon Clipping Library Version 2.32    http://www.cs.man.ac.uk/~toby/alan/software/gpc.html Alan Murta Advanced Interfaces Group Department of Computer Science University of Manchester Manchester M13 9PL, UK Abstract: This document descri…

RaPC(rasterized polygon clipper)-A discrete grid-based polygon clipping algorithm This algorithm is a part of my Ph.D thesis and which is still under developing... Some demo results on clipping of convex polygons or concave polygons with holes are he…

题意 输入n本书的信息:id,书名,作者,关键字,出版社,出版年份.搜索图书,输出id. 思路 定义5个map<string, set<int> >,分别存放Title, Author, Word, Publishier, Year与id的映射关系,然后只需要考虑怎么输入就可以了.注意因为字符串和map的参数传递很慢,所以如果把查询写成函数,必须对参数进行引用,否则会导致运行超时. code: #include<bits/stdc++.h> using namespac…

1. [代码]jsi-rtree-library /** *  */package com.mycompany.project; //package net.sourceforge.jsi.examples; import java.util.ArrayList;import java.util.List; import org.apache.log4j.Logger; //import org.slf4j.*;import com.infomatiq.jsi.*; import gnu.tro…

Comparison of the different algorithms for  Polygon Boolean operations. Michael Leonov 1998 http://www.angusj.com/delphi/clipper.php#screenshots http://www.complex-a5.ru/polyboolean/comp.html http://www.angusj.com/delphi/clipper.php#screenshots Intro…

Computational Geometry The Geometry Center (UIUC) Computational Geometry Pages (UIUC) Geometry in Action (UIC) Geometric Resource (UFL) CAGD Applets (UKA) Voronoi/Delaunay Applet (CornellUniversity) Directory of Computational Geometry Software (Dr. N…

Libraries And Bindings     LuaDirectory > LuaAddons > LibrariesAndBindings This is a list of libraries implemented in Lua or implemented in another language (e.g. C) but having a Lua interface. For older libraries and bindings, see the LuaAddonsArch…

多边形裁剪是渲染管线中重要的一个子阶段,它将视截体外的多边形去除.一种简单的裁剪策略是一旦发现一个顶点在裁剪区域以外,就立刻丢弃该多边形.更加精细的做法则是,将原来的多边形拆为多个不跨越边界的多边形,仅丢弃在区域外的,譬如: 矩形裁剪三角形ABC示例 上图中,输入的△ABC被分为△DGE.△DFG.△ADE.□CFGB,△DGE.△DFG被作为输出保留. 一.最简单的情境 先考虑一个简单的情境:用裁剪给定的三角形,其轴左边的部分都被去掉(仅保留横坐标不小于0的部分).我们将问题分为四种简单的情况…

旅行商问题 北工商-经研143班共有30位同学,来自22个地区,我们希望在假期来一次说走就走的旅行,将所有同学的家乡走一遍.算起来,路费是一笔很大的花销,所以希望设计一个旅行方案,确保这一趟走下来的总路程最短. 旅行商问题是一个经典的NP问题 NP就是Non-deterministic Polynomial,即多项式复杂程度的非确定性问题,是世界七大数学难题之一. 如果使用枚举法求解,22个地点共有: (22-1)!/2 = 25545471085854720000 种路线方案 GA算法 遗传算…

General Purpose Hash Function Algorithms post@: http://www.partow.net/programming/hashfunctions/index.html       Description Hashing Methodologies Hash Functions and Prime Numbers Bit Biases Various Forms Of Hashing String Hashing Cryptographic Hashi…