diff -r 7b44eea654d0 -r 7cd965d2257f demo/graph_to_eps_demo.cc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/demo/graph_to_eps_demo.cc	Thu Apr 03 11:10:49 2008 +0100
@@ -0,0 +1,208 @@
+/* -*- 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.
+ *
+ */
+
+/// \ingroup demos
+/// \file
+/// \brief Demo of the graph grawing function \ref graphToEps()
+///
+/// This demo program shows examples how to  use the function \ref
+/// graphToEps(). It takes no input but simply creates  six
+/// <tt>.eps</tt> files demonstrating the capability of \ref
+/// 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 \ref maps-page "graph maps".
+///
+/// \include graph_to_eps_demo.cc
+
+#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(-1,true);
+
+  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> ecolors(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 e;
+
+  e=g.addArc(n1,n2); ecolors[e]=0; widths[e]=1;
+  e=g.addArc(n2,n3); ecolors[e]=0; widths[e]=1;
+  e=g.addArc(n3,n5); ecolors[e]=0; widths[e]=3;
+  e=g.addArc(n5,n4); ecolors[e]=0; widths[e]=1;
+  e=g.addArc(n4,n1); ecolors[e]=0; widths[e]=1;
+  e=g.addArc(n2,n4); ecolors[e]=1; widths[e]=2;
+  e=g.addArc(n3,n4); ecolors[e]=2; widths[e]=1;
+  
+  IdMap<ListDigraph,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().absoluteArcWidths().
+    nodeScale(2).nodeSizes(sizes).
+    nodeShapes(shapes).
+    nodeColors(composeMap(palette,colors)).
+    arcColors(composeMap(palette,ecolors)).
+    arcWidthScale(.4).arcWidths(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().absoluteArcWidths().
+    nodeColors(composeMap(palette,colors)).
+    coords(coords).
+    nodeScale(2).nodeSizes(sizes).
+    nodeShapes(shapes).
+    arcColors(composeMap(palette,ecolors)).
+    arcWidthScale(.4).arcWidths(widths).
+    nodeTexts(id).nodeTextSize(3).
+    drawArrows().arrowWidth(1).arrowLength(1).
+    run();
+
+  e=g.addArc(n1,n4); ecolors[e]=2; widths[e]=1;
+  e=g.addArc(n4,n1); ecolors[e]=1; widths[e]=2;
+
+  e=g.addArc(n1,n2); ecolors[e]=1; widths[e]=1;
+  e=g.addArc(n1,n2); ecolors[e]=2; widths[e]=1;
+  e=g.addArc(n1,n2); ecolors[e]=3; widths[e]=1;
+  e=g.addArc(n1,n2); ecolors[e]=4; widths[e]=1;
+  e=g.addArc(n1,n2); ecolors[e]=5; widths[e]=1;
+  e=g.addArc(n1,n2); ecolors[e]=6; widths[e]=1;
+  e=g.addArc(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 arcs)").
+    copyright("(C) 2003-2007 LEMON Project").
+    absoluteNodeSizes().absoluteArcWidths().
+    nodeShapes(shapes).
+    coords(coords).
+    nodeScale(2).nodeSizes(sizes).
+    nodeColors(composeMap(palette,colors)).
+    arcColors(composeMap(palette,ecolors)).
+    arcWidthScale(.4).arcWidths(widths).
+    nodeTexts(id).nodeTextSize(3).
+    enableParallel().parArcDist(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 arcs and arrowheads)").
+    copyright("(C) 2003-2007 LEMON Project").
+    absoluteNodeSizes().absoluteArcWidths().
+    nodeScale(2).nodeSizes(sizes).
+    coords(coords).
+    nodeShapes(shapes).
+    nodeColors(composeMap(palette,colors)).
+    arcColors(composeMap(palette,ecolors)).
+    arcWidthScale(.3).arcWidths(widths).
+    nodeTexts(id).nodeTextSize(3).
+    enableParallel().parArcDist(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().absoluteArcWidths().
+    nodeScale(2).nodeSizes(sizes).
+    coords(coords).
+    nodeShapes(shapes).
+    nodeColors(composeMap(palette,colors)).
+    arcColors(composeMap(palette,ecolors)).
+    arcWidthScale(.3).arcWidths(widths).
+    nodeTexts(id).nodeTextSize(3).
+    enableParallel().parArcDist(1).
+    drawArrows().arrowWidth(1).arrowLength(1).
+    run();
+
+  ListDigraph h;
+  ListDigraph::NodeMap<int> hcolors(h);
+  ListDigraph::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().absoluteArcWidths().
+    nodeScale(45).
+    distantColorNodeTexts().
+    //    distantBWNodeTexts().
+    nodeTexts(hcolors).nodeTextSize(.6).
+    nodeColors(composeMap(paletteW,hcolors)).
+    run();
+}