/* -*- C++ -*-

  * demo/graph_to_eps.cc - Part of LEMON, a generic C++ optimization library

  *

  * Copyright (C) 2005 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/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 \ref maps-page "graph maps".

 #include <cmath>

 #include<lemon/graph_to_eps.h>

 #include<lemon/list_graph.h>

 using namespace std;

 using namespace lemon;

 int main()

 {

   ColorSet colorSet;

   ListGraph g;

   typedef ListGraph::Node Node;

   typedef ListGraph::NodeIt NodeIt;

   typedef ListGraph::Edge Edge;

   typedef xy<int> Xy;

   Node n1=g.addNode();

   Node n2=g.addNode();

   Node n3=g.addNode();

   Node n4=g.addNode();

   Node n5=g.addNode();

   ListGraph::NodeMap<Xy> 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]=Xy(50,50);  sizes[n1]=1; colors[n1]=1; shapes[n1]=0;

   coords[n2]=Xy(50,70);  sizes[n2]=2; colors[n2]=2; shapes[n2]=2;

   coords[n3]=Xy(70,70);  sizes[n3]=1; colors[n3]=3; shapes[n3]=0;

   coords[n4]=Xy(70,50);  sizes[n4]=2; colors[n4]=4; shapes[n4]=1;

   coords[n5]=Xy(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.eps'" << endl;

   graphToEps(g,"graph_to_eps_demo_out.eps").scale(10).coords(coords).

     title("Sample .eps figure").

     copyright("(C) 2005 LEMON Project").

     nodeScale(2).nodeSizes(sizes).

     nodeShapes(shapes).

     nodeColors(composeMap(colorSet,colors)).

     edgeColors(composeMap(colorSet,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) 2005 LEMON Project").

     nodeColors(composeMap(colorSet,colors)).

     coords(coords).

     nodeScale(2).nodeSizes(sizes).

     nodeShapes(shapes).

     edgeColors(composeMap(colorSet,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) 2005 LEMON Project").

     nodeShapes(shapes).

     coords(coords).

     nodeScale(2).nodeSizes(sizes).

     nodeColors(composeMap(colorSet,colors)).

     edgeColors(composeMap(colorSet,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) 2005 LEMON Project").

     nodeScale(2).nodeSizes(sizes).

     coords(coords).

     nodeShapes(shapes).

     nodeColors(composeMap(colorSet,colors)).

     edgeColors(composeMap(colorSet,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) 2005 LEMON Project").

     nodeScale(2).nodeSizes(sizes).

     coords(coords).

     nodeShapes(shapes).

     nodeColors(composeMap(colorSet,colors)).

     edgeColors(composeMap(colorSet,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<Xy> hcoords(h);

   int cols=int(sqrt(double(colorSet.size())));

   for(int i=0;i<int(colorSet.size());i++) {

     Node n=h.addNode();

     hcoords[n]=Xy(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 (ColorSet demo)").

     copyright("(C) 2005 LEMON Project").

     coords(hcoords).

     nodeScale(.45).

     distantColorNodeTexts().

     //    distantBWNodeTexts().

     nodeTexts(hcolors).nodeTextSize(.6).

     nodeColors(composeMap(colorSet,hcolors)).

     run();

 }