graph_to_eps_demo.cc File Reference

---

Detailed Description

This demo program shows examples how to use the function graphToEps(). It takes no input but simply creates six .eps files demonstrating the capability of graphToEps(), and showing how to draw directed/undirected graphs, how to handle parallel egdes, how to change the properties (like color, shape, size, title etc.) of nodes and edges individually using appropriate graph maps.

/* -*- C++ -*-
 *
 * This file is a part of LEMON, a generic C++ optimization library
 *
 * Copyright (C) 2003-2008
 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
 * (Egervary Research Group on Combinatorial Optimization, EGRES).
 *
 * Permission to use, modify and distribute this software is granted
 * provided that this copyright notice appears in all copies. For
 * precise terms see the accompanying LICENSE file.
 *
 * This software is provided "AS IS" with no warranty of any kind,
 * express or implied, and with no claim as to its suitability for any
 * purpose.
 *
 */


#include <lemon/math.h>

#include<lemon/graph_to_eps.h>
#include<lemon/list_graph.h>
#include<lemon/graph_utils.h>

using namespace std;
using namespace lemon;

int main()
{
  Palette palette;
  Palette paletteW(true);

  ListGraph g;
  typedef ListGraph::Node Node;
  typedef ListGraph::NodeIt NodeIt;
  typedef ListGraph::Edge Edge;
  typedef dim2::Point<int> Point;
  
  Node n1=g.addNode();
  Node n2=g.addNode();
  Node n3=g.addNode();
  Node n4=g.addNode();
  Node n5=g.addNode();

  ListGraph::NodeMap<Point> coords(g);
  ListGraph::NodeMap<double> sizes(g);
  ListGraph::NodeMap<int> colors(g);
  ListGraph::NodeMap<int> shapes(g);
  ListGraph::EdgeMap<int> ecolors(g);
  ListGraph::EdgeMap<int> widths(g);
  
  coords[n1]=Point(50,50);  sizes[n1]=1; colors[n1]=1; shapes[n1]=0;
  coords[n2]=Point(50,70);  sizes[n2]=2; colors[n2]=2; shapes[n2]=2;
  coords[n3]=Point(70,70);  sizes[n3]=1; colors[n3]=3; shapes[n3]=0;
  coords[n4]=Point(70,50);  sizes[n4]=2; colors[n4]=4; shapes[n4]=1;
  coords[n5]=Point(85,60);  sizes[n5]=3; colors[n5]=5; shapes[n5]=2;
  
  Edge e;

  e=g.addEdge(n1,n2); ecolors[e]=0; widths[e]=1;
  e=g.addEdge(n2,n3); ecolors[e]=0; widths[e]=1;
  e=g.addEdge(n3,n5); ecolors[e]=0; widths[e]=3;
  e=g.addEdge(n5,n4); ecolors[e]=0; widths[e]=1;
  e=g.addEdge(n4,n1); ecolors[e]=0; widths[e]=1;
  e=g.addEdge(n2,n4); ecolors[e]=1; widths[e]=2;
  e=g.addEdge(n3,n4); ecolors[e]=2; widths[e]=1;
  
  IdMap<ListGraph,Node> id(g);

  cout << "Create 'graph_to_eps_demo_out_pure.eps'" << endl;
  graphToEps(g,"graph_to_eps_demo_out_pure.eps").
    //scale(10).
    coords(coords).
    title("Sample .eps figure").
    copyright("(C) 2003-2007 LEMON Project").
    run();

  cout << "Create 'graph_to_eps_demo_out.eps'" << endl;
  graphToEps(g,"graph_to_eps_demo_out.eps").
    //scale(10).
    coords(coords).
    title("Sample .eps figure").
    copyright("(C) 2003-2007 LEMON Project").
    absoluteNodeSizes().absoluteEdgeWidths().
    nodeScale(2).nodeSizes(sizes).
    nodeShapes(shapes).
    nodeColors(composeMap(palette,colors)).
    edgeColors(composeMap(palette,ecolors)).
    edgeWidthScale(.4).edgeWidths(widths).
    nodeTexts(id).nodeTextSize(3).
    run();


  cout << "Create 'graph_to_eps_demo_out_arr.eps'" << endl;
  graphToEps(g,"graph_to_eps_demo_out_arr.eps").
    //scale(10).
    title("Sample .eps figure (with arrowheads)").
    copyright("(C) 2003-2007 LEMON Project").
    absoluteNodeSizes().absoluteEdgeWidths().
    nodeColors(composeMap(palette,colors)).
    coords(coords).
    nodeScale(2).nodeSizes(sizes).
    nodeShapes(shapes).
    edgeColors(composeMap(palette,ecolors)).
    edgeWidthScale(.4).edgeWidths(widths).
    nodeTexts(id).nodeTextSize(3).
    drawArrows().arrowWidth(1).arrowLength(1).
    run();

  e=g.addEdge(n1,n4); ecolors[e]=2; widths[e]=1;
  e=g.addEdge(n4,n1); ecolors[e]=1; widths[e]=2;

  e=g.addEdge(n1,n2); ecolors[e]=1; widths[e]=1;
  e=g.addEdge(n1,n2); ecolors[e]=2; widths[e]=1;
  e=g.addEdge(n1,n2); ecolors[e]=3; widths[e]=1;
  e=g.addEdge(n1,n2); ecolors[e]=4; widths[e]=1;
  e=g.addEdge(n1,n2); ecolors[e]=5; widths[e]=1;
  e=g.addEdge(n1,n2); ecolors[e]=6; widths[e]=1;
  e=g.addEdge(n1,n2); ecolors[e]=7; widths[e]=1;

  cout << "Create 'graph_to_eps_demo_out_par.eps'" << endl;
  graphToEps(g,"graph_to_eps_demo_out_par.eps").
    //scale(10).
    title("Sample .eps figure (parallel edges)").
    copyright("(C) 2003-2007 LEMON Project").
    absoluteNodeSizes().absoluteEdgeWidths().
    nodeShapes(shapes).
    coords(coords).
    nodeScale(2).nodeSizes(sizes).
    nodeColors(composeMap(palette,colors)).
    edgeColors(composeMap(palette,ecolors)).
    edgeWidthScale(.4).edgeWidths(widths).
    nodeTexts(id).nodeTextSize(3).
    enableParallel().parEdgeDist(1.5).
    run();
  
  cout << "Create 'graph_to_eps_demo_out_par_arr.eps'" << endl;
  graphToEps(g,"graph_to_eps_demo_out_par_arr.eps").
    //scale(10).
    title("Sample .eps figure (parallel edges and arrowheads)").
    copyright("(C) 2003-2007 LEMON Project").
    absoluteNodeSizes().absoluteEdgeWidths().
    nodeScale(2).nodeSizes(sizes).
    coords(coords).
    nodeShapes(shapes).
    nodeColors(composeMap(palette,colors)).
    edgeColors(composeMap(palette,ecolors)).
    edgeWidthScale(.3).edgeWidths(widths).
    nodeTexts(id).nodeTextSize(3).
    enableParallel().parEdgeDist(1).
    drawArrows().arrowWidth(1).arrowLength(1).
    run();

  cout << "Create 'graph_to_eps_demo_out_a4.eps'" << endl;
  graphToEps(g,"graph_to_eps_demo_out_a4.eps").scaleToA4().
    title("Sample .eps figure (fits to A4)").
    copyright("(C) 2003-2007 LEMON Project").
    absoluteNodeSizes().absoluteEdgeWidths().
    nodeScale(2).nodeSizes(sizes).
    coords(coords).
    nodeShapes(shapes).
    nodeColors(composeMap(palette,colors)).
    edgeColors(composeMap(palette,ecolors)).
    edgeWidthScale(.3).edgeWidths(widths).
    nodeTexts(id).nodeTextSize(3).
    enableParallel().parEdgeDist(1).
    drawArrows().arrowWidth(1).arrowLength(1).
    run();

  ListGraph h;
  ListGraph::NodeMap<int> hcolors(h);
  ListGraph::NodeMap<Point> hcoords(h);
  
  int cols=int(sqrt(double(palette.size())));
  for(int i=0;i<int(paletteW.size());i++) {
    Node n=h.addNode();
    hcoords[n]=Point(i%cols,i/cols);
    hcolors[n]=i;
  }
  
  cout << "Create 'graph_to_eps_demo_out_colors.eps'" << endl;
  graphToEps(h,"graph_to_eps_demo_out_colors.eps").
    //scale(60).
    title("Sample .eps figure (Palette demo)").
    copyright("(C) 2003-2007 LEMON Project").
    coords(hcoords).
    absoluteNodeSizes().absoluteEdgeWidths().
    nodeScale(45).
    distantColorNodeTexts().
    //    distantBWNodeTexts().
    nodeTexts(hcolors).nodeTextSize(.6).
    nodeColors(composeMap(paletteW,hcolors)).
    run();
}

#include <lemon/math.h>
#include <lemon/graph_to_eps.h>
#include <lemon/list_graph.h>
#include <lemon/graph_utils.h>