61c0424eed
git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@512 331e1502-861f-0410-8da2-ba01fb791d7f
90 lines
1.8 KiB
C++
90 lines
1.8 KiB
C++
// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
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// "graph.cpp"
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// (c) OPAC Team, LIFL, 2003-2006
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/* LICENCE TEXT
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Contact: paradiseo-help@lists.gforge.inria.fr
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*/
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#include <fstream>
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#include <iostream>
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#include <math.h>
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#include "graph.h"
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namespace Graph {
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static std :: vector <std :: pair <double, double> > vectCoord ; // Coordinates
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static std :: vector <std :: vector <unsigned int> > dist ; // Distances Mat.
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unsigned size ()
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{
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return dist.size () ;
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}
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void computeDistances ()
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{
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// Dim.
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unsigned int numCities = vectCoord.size () ;
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dist.resize (numCities) ;
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for (unsigned int i = 0 ; i < dist.size () ; i ++)
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{
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dist [i].resize (numCities) ;
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}
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// Computations.
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for (unsigned int i = 0 ; i < dist.size () ; i ++)
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{
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for (unsigned int j = i + 1 ; j < dist.size () ; j ++)
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{
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double distX = (double)(vectCoord [i].first - vectCoord [j].first) ;
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double distY = (double)(vectCoord [i].second - vectCoord [j].second) ;
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dist [i] [j] = dist [j] [i] = (unsigned) (sqrt ((float) (distX * distX + distY * distY)) + 0.5) ;
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}
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}
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}
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void load (const char * __fileName)
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{
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std :: ifstream f (__fileName) ;
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std :: cout << ">> Loading [" << __fileName << "]" << std :: endl ;
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if (f)
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{
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unsigned int num_vert ;
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f >> num_vert ;
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vectCoord.resize (num_vert) ;
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for (unsigned int i = 0 ; i < num_vert ; i ++)
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{
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f >> vectCoord [i].first >> vectCoord [i].second ;
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}
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f.close () ;
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computeDistances () ;
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}
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else
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{
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std :: cout << __fileName << " doesn't exist !!!" << std :: endl ;
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// Bye !!!
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exit (1) ;
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}
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}
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float distance (unsigned int __from, unsigned int __to)
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{
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return (float)(dist [__from] [__to]) ;
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}
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}
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