CGAL users discussion list

[Brian Sanjeewa Rupasinghe <>]

Hello,

I created the CGAL library for Visual c++ 2008. Now i need to create a new program for Voronoi without CMAKE.

This is the .CPP file of my application.

#include "stdafx.h"

#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>

#include <CGAL/Delaunay_triangulation_2.h>

#include <fstream>

typedef CGAL::Exact_predicates_inexact_constructions_kernel K;

typedef CGAL::Delaunay_triangulation_2<K>  Triangulation;

typedef Triangulation::Edge_iterator  Edge_iterator;

typedef Triangulation::Point          Point;

int _tmain()

{

std::ifstream in("data/voronoi.cin");

  std::istream_iterator<Point> begin(in);

  std::istream_iterator<Point> end;

  Triangulation T;

  T.insert(begin, end);

  int ns = 0;

  int nr = 0;

  Edge_iterator eit =T.edges_begin();

  for ( ; eit !=T.edges_end(); ++eit) {

    CGAL::Object o = T.dual(eit);

    if (CGAL::object_cast<K::Segment_2>(&o)) {++ns;}

    else if (CGAL::object_cast<K::Ray_2>(&o)) {++nr;}

  }

  std::cout << "The Voronoi diagram has " << ns << " finite edges "

            << " and " << nr << " rays" << std::endl;

return 0;

}

I followed the procedure given below after creating a new project. However, when the project is compiled it gives an

error: "fatal error LNK1104: cannot open file 'libgmp-10.lib;libmpfr-4.lib'. Any solution for this?

Brian.

Customizing env - If you are not using CMake to create new VS projects

 - Go to Tools -> Options -> Projects and Solutions -> VC++ Directories. Add the following to "Include files" (include) and "Library files" (library) [under "show directories for"].

   * include: <Boost> (C:\Program Files\boost\boost_1_44)

   * include: <CGAL>\include (C:\Program Files\CGAL-3.7\include)

   * include: <CGAL>\auxiliary\gmp\include (C:\Program Files\CGAL-3.7\auxiliary\gmp\include)

   * include: <QT>\include (C:\Qt\4.7.1\include)

   * include: <QT>\include\QtCore (C:\Qt\4.7.1\include\QtCore)

   * include: <QT>\include\QtGui (C:\Qt\4.7.1\include\QtGui)

 

   * library: <CGAL>\lib (C:\Program Files\CGAL-3.7\lib)

   * library: <QT>\lib (C:\Qt\4.7.1\lib)

   * library: <Boost>\lib (C:\Program Files\boost\boost_1_44\lib)

   * library: <CGAL>\auxiliary\gmp\lib (C:\Program Files\CGAL-3.7\auxiliary\gmp\lib)

   

For a specific project using CGAL you need to ignore the auto-link of gmp and mpfr. The names below are for Debug. In Release their names are a bit different.

 - Project Propeties -> Linker -> Input

   * Add libgmp-10.lib and libmpfr-4.lib to "Additional Dependencies"

   * Add gmp-vc90-mt-gd.lib and mpfr-vc90-mt-gd.lib to "Ignore Specific Library".