examples/graph.cpp

#include <cstdlib>
#include <ctime>
#include <iostream>
#include <fstream>
#include <cmath>
#include <vector>
#include <utility>
#include "Board.h"

using namespace std;
using namespace LibBoard;

const double dy = 10;

int coordinate( int width ) {
  return 1 + (int) (width * (rand() / (RAND_MAX + 1.0)));
}

int main( int , char *[] )
{
  Board board;
  board.clear( Color(200,255,200) );
  srand( static_cast<unsigned int>( time( 0 ) ) );

  vector< pair<int,int>  > points;
  vector< pair<int,int>  >::iterator i1, i2, end;

  int n = 22;
  while ( n-- ) {
    points.push_back( make_pair( coordinate(80), coordinate(60) ) );
  }

  end = points.end();
  i1 = points.begin();
  while ( i1 != end ) {
    i2 = i1;
    Color pen( coordinate(255), coordinate(255), coordinate(255) );
    while ( i2 != end ) {
      if ( i1 != i2 ) {
        board << Arrow( i1->first, i1->second, i2->first, i2->second,
                        pen, pen, 0.1 );
        double mod = sqrt( static_cast<double>( (i2->first-i1->first)
                                                *(i2->first-i1->first)
                                                +(i2->second-i1->second)
                                                *(i2->second-i1->second) ) );
        board << Arrow( i1->first,
                        i1->second,
                        i1->first + ((i2->first-i1->first)/mod)*((mod>8)?8:mod),
                        i1->second  + ((i2->second-i1->second)/mod)*((mod>8)?8:mod),
                        pen, pen, 0.1 ).translated(80,0);
      }
      ++i2;
    }
    ++i1;
  }

  i1 = points.begin();
  while ( i1 != end ) {
    board << Circle( i1->first, i1->second, 0.5, Color::Black, Color::Black, 0 );
    ++i1;
  }

  board.saveEPS( "graph.eps", 100, 100 );
  board.saveFIG( "graph.fig", 100, 100 );

  board.scaleToWidth(25,Board::UseLineWidth);
  board.saveSVG( "graph.svg", Board::BoundingBox, 0.0, Board::UCentimeter );
}