CGAL的安裝與環境配置
阿新 • • 發佈:2019-01-02
系統環境:Ubuntu-14.04
1.安裝g++
$ sudo apt-get install g++
2. 安裝boost
下載boost原始檔【官網】
$tar -zxvf boost_1_58_0.tar.gz
$ cd boost_58_0
$ ./boostrap.sh
$ ./b2 install
3. 安裝cmake
下載cmake原始檔【官網】
$tar -zxvf cmake-3.3.2.tar.gz
$ cd cmake-3.3.2
$ ./bootstrap
$ make
$ make install
4.安裝相關依賴庫
$sudo apt-get install libgmp-dev libmpfr-dev
$sudo apt-get install libgmp-dev
5.安裝CGAL
下載CGAL原始檔【官網】
$ tar -zxvf CGAL_4.6.3.tar.gz
$ cd CGAL_4.6.3
$ cmake .
$ make
$ sudo make install
注:如果報錯OSError: libCGAL.so.11: cannot open shared object file: No such file or directory,解決方法:新增libCGAL.so路徑,如:export LD_LIBRARY_PATH=/usr/local/lib; 或者在/etc/profiles檔案中新增。
eg.
#include <iostream> #include <CGAL/Simple_cartesian.h> #include <CGAL/Polygon_2.h> #include <CGAL/Polygon_with_holes_2.h> #include <CGAL/Boolean_set_operations_2.h> #include <CGAL/Polygon_2_algorithms.h> typedef CGAL::Simple_cartesian<double> K; typedef K::Point_2 Point; typedef CGAL::Polygon_2<K> Polygon_2; typedef CGAL::Polygon_with_holes_2<K> Polygon_with_holes_2; using std::cout; using std::endl; int main(){ Point points[] = { Point(0,0), Point(2,0), Point(2,1), Point(0,1)}; // Point points2[] = { Point(0.5,0.5), Point(1.5,0.5), Point(1.5,1.5), Point(0.5,1.5)}; Point points2[] = { Point(0,0), Point(3,0), Point(3,2), Point(1,0.5)}; Polygon_2 poly1(points, points+4); Polygon_2 poly2(points2, points2+4); //CGAL::General_polygon_with_holes_2<K> poly3; std::list<Polygon_with_holes_2> polyI; double p1_area = poly1.area(); double p2_area = poly2.area(); CGAL::intersection(poly1, poly2, std::back_inserter(polyI)); double totalArea = 0; typedef std::list<Polygon_with_holes_2>::iterator LIT; for(LIT lit = polyI.begin(); lit!=polyI.end(); lit++){ totalArea+=lit->outer_boundary().area(); } cout << "poly1Area::" << p1_area <<endl << "poly2Area::" << p2_area <<endl << "IntersetArea::" << totalArea << endl << "OverlabArea::" << totalArea*1.0/(p1_area+p2_area-totalArea) << endl; }
編譯命令:g++ -o poly.o polyOverlab2.cpp -L/usr/local/lib/ -lCGAL -lCGAL_Core -lgmp -lmpfr -lboost_system -lboost_filesystem -lboost_regex -lboost_thread
測試:./poly