source: lemon-0.x/src/work/peter/xy-reader.cc @ 1280:f2255b96c19c

#include <fstream>
#include <iostream>

#include <lemon/xy.h>
#include <lemon/maps.h>
#include <lemon/error.h>
#include <lemon/list_graph.h>
#include <lemon/graph_reader.h>
#include <lemon/graph_utils.h>

using namespace lemon;

typedef ListGraph Graph;
typedef xy<double> Coordinates;
typedef Graph::NodeMap<Coordinates> CoordinatesMap;
typedef Graph::Node Node;

class CoordReaderMap: public MapBase<Node, double>
{
    CoordinatesMap * cm;
    char xoy;

public:
    CoordReaderMap(char xory, CoordinatesMap * coordmap): cm(coordmap)
    {
        switch(xory)
        {
            case 'x':
            case 'y':
                xoy=xory;
                break;
            default:
                throw UninitializedParameter() ;
        }
    }

    void set(Node node, double coord)
    {
        switch(xoy)
        {
            case 'x':
                (*cm)[node].x=coord;
                break;
            case 'y':
                (*cm)[node].y=coord;
                break;
            default:
                throw UninitializedParameter() ;
        }
    }
};

int main(void)
{
    Graph g;
    CoordinatesMap cm(g);

    CoordReaderMap xreader('x',&cm);
    CoordReaderMap yreader('y',&cm);

    std::ifstream is("dijkstra_test.lemon");
    
    GraphReader<Graph> reader(is, g);
    reader.addNodeMap("coordinates_x", xreader);
    reader.addNodeMap("coordinates_y", yreader);
    reader.run();
    
    return 0;
}