/* -*- 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.

  *

  */

 /// \ingroup demos

 /// \file

 /// \brief Demo of the graph drawing function \ref graphToEps()

 ///

 /// This demo program shows examples how to use the function \ref

 /// graphToEps(). It takes no input but simply creates seven

 /// <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 graph maps.

 ///

 /// \include graph_to_eps_demo.cc

 #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;

 }