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graph_to_eps_demo.cc File Reference
Demo Programs

## Detailed Description

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

/* -*- mode: C++; indent-tabs-mode: nil; -*-
*
* This file is a part of LEMON, a generic C++ optimization library.
*
* Copyright (C) 2003-2009
* 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/list_graph.h>
#include<lemon/graph_to_eps.h>
#include<lemon/math.h>
using namespace std;
using namespace lemon;
int main()
{
Palette palette;
Palette paletteW(true);
// Create a small digraph
ListDigraph g;
typedef ListDigraph::Node Node;
typedef ListDigraph::NodeIt NodeIt;
typedef ListDigraph::Arc Arc;
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();
ListDigraph::NodeMap<Point> coords(g);
ListDigraph::NodeMap<double> sizes(g);
ListDigraph::NodeMap<int> colors(g);
ListDigraph::NodeMap<int> shapes(g);
ListDigraph::ArcMap<int> acolors(g);
ListDigraph::ArcMap<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;
Arc a;
a=g.addArc(n1,n2); acolors[a]=0; widths[a]=1;
a=g.addArc(n2,n3); acolors[a]=0; widths[a]=1;
a=g.addArc(n3,n5); acolors[a]=0; widths[a]=3;
a=g.addArc(n5,n4); acolors[a]=0; widths[a]=1;
a=g.addArc(n4,n1); acolors[a]=0; widths[a]=1;
a=g.addArc(n2,n4); acolors[a]=1; widths[a]=2;
a=g.addArc(n3,n4); acolors[a]=2; widths[a]=1;
IdMap<ListDigraph,Node> id(g);
// Create .eps files showing the digraph with different options
cout << "Create 'graph_to_eps_demo_out_1_pure.eps'" << endl;
graphToEps(g,"graph_to_eps_demo_out_1_pure.eps").
coords(coords).
title("Sample .eps figure").
copyright("(C) 2003-2009 LEMON Project").
run();
cout << "Create 'graph_to_eps_demo_out_2.eps'" << endl;
graphToEps(g,"graph_to_eps_demo_out_2.eps").
coords(coords).
title("Sample .eps figure").
copyright("(C) 2003-2009 LEMON Project").
absoluteNodeSizes().absoluteArcWidths().
nodeScale(2).nodeSizes(sizes).
nodeShapes(shapes).
nodeColors(composeMap(palette,colors)).
arcColors(composeMap(palette,acolors)).
arcWidthScale(.4).arcWidths(widths).
nodeTexts(id).nodeTextSize(3).
run();
cout << "Create 'graph_to_eps_demo_out_3_arr.eps'" << endl;
graphToEps(g,"graph_to_eps_demo_out_3_arr.eps").
title("Sample .eps figure (with arrowheads)").
copyright("(C) 2003-2009 LEMON Project").
absoluteNodeSizes().absoluteArcWidths().
nodeColors(composeMap(palette,colors)).
coords(coords).
nodeScale(2).nodeSizes(sizes).
nodeShapes(shapes).
arcColors(composeMap(palette,acolors)).
arcWidthScale(.4).arcWidths(widths).
nodeTexts(id).nodeTextSize(3).
drawArrows().arrowWidth(2).arrowLength(2).
run();
// Add more arcs to the digraph
a=g.addArc(n1,n4); acolors[a]=2; widths[a]=1;
a=g.addArc(n4,n1); acolors[a]=1; widths[a]=2;
a=g.addArc(n1,n2); acolors[a]=1; widths[a]=1;
a=g.addArc(n1,n2); acolors[a]=2; widths[a]=1;
a=g.addArc(n1,n2); acolors[a]=3; widths[a]=1;
a=g.addArc(n1,n2); acolors[a]=4; widths[a]=1;
a=g.addArc(n1,n2); acolors[a]=5; widths[a]=1;
a=g.addArc(n1,n2); acolors[a]=6; widths[a]=1;
a=g.addArc(n1,n2); acolors[a]=7; widths[a]=1;
cout << "Create 'graph_to_eps_demo_out_4_par.eps'" << endl;
graphToEps(g,"graph_to_eps_demo_out_4_par.eps").
title("Sample .eps figure (parallel arcs)").
copyright("(C) 2003-2009 LEMON Project").
absoluteNodeSizes().absoluteArcWidths().
nodeShapes(shapes).
coords(coords).
nodeScale(2).nodeSizes(sizes).
nodeColors(composeMap(palette,colors)).
arcColors(composeMap(palette,acolors)).
arcWidthScale(.4).arcWidths(widths).
nodeTexts(id).nodeTextSize(3).
enableParallel().parArcDist(1.5).
run();
cout << "Create 'graph_to_eps_demo_out_5_par_arr.eps'" << endl;
graphToEps(g,"graph_to_eps_demo_out_5_par_arr.eps").
title("Sample .eps figure (parallel arcs and arrowheads)").
copyright("(C) 2003-2009 LEMON Project").
absoluteNodeSizes().absoluteArcWidths().
nodeScale(2).nodeSizes(sizes).
coords(coords).
nodeShapes(shapes).
nodeColors(composeMap(palette,colors)).
arcColors(composeMap(palette,acolors)).
arcWidthScale(.3).arcWidths(widths).
nodeTexts(id).nodeTextSize(3).
enableParallel().parArcDist(1).
drawArrows().arrowWidth(1).arrowLength(1).
run();
cout << "Create 'graph_to_eps_demo_out_6_par_arr_a4.eps'" << endl;
graphToEps(g,"graph_to_eps_demo_out_6_par_arr_a4.eps").
title("Sample .eps figure (fits to A4)").
copyright("(C) 2003-2009 LEMON Project").
scaleToA4().
absoluteNodeSizes().absoluteArcWidths().
nodeScale(2).nodeSizes(sizes).
coords(coords).
nodeShapes(shapes).
nodeColors(composeMap(palette,colors)).
arcColors(composeMap(palette,acolors)).
arcWidthScale(.3).arcWidths(widths).
nodeTexts(id).nodeTextSize(3).
enableParallel().parArcDist(1).
drawArrows().arrowWidth(1).arrowLength(1).
run();
// Create an .eps file showing the colors of a default Palette
ListDigraph h;
ListDigraph::NodeMap<int> hcolors(h);
ListDigraph::NodeMap<Point> hcoords(h);
int cols=int(std::sqrt(double(palette.size())));
for(int i=0;i<int(paletteW.size());i++) {
Node n=h.addNode();
hcoords[n]=Point(1+i%cols,1+i/cols);
hcolors[n]=i;
}
cout << "Create 'graph_to_eps_demo_out_7_colors.eps'" << endl;
graphToEps(h,"graph_to_eps_demo_out_7_colors.eps").
scale(60).
title("Sample .eps figure (Palette demo)").
copyright("(C) 2003-2009 LEMON Project").
coords(hcoords).
absoluteNodeSizes().absoluteArcWidths().
nodeScale(.45).
distantColorNodeTexts().
nodeTexts(hcolors).nodeTextSize(.6).
nodeColors(composeMap(paletteW,hcolors)).
run();
return 0;
}
`#include <lemon/list_graph.h>`
`#include <lemon/graph_to_eps.h>`
`#include <lemon/math.h>`