/* -*- 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 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 "graphmaps".

#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();

}