lemon/graph_to_eps.h
author Alpar Juttner <alpar@cs.elte.hu>
Sun, 13 Jul 2008 16:35:05 +0100
changeset 207 574b963d0275
parent 184 716b220697a0
child 209 765619b7cbb2
permissions -rw-r--r--
Merge
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/* -*- C++ -*-
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 *
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 * This file is a part of LEMON, a generic C++ optimization library
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 *
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 * Copyright (C) 2003-2008
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 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
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 * (Egervary Research Group on Combinatorial Optimization, EGRES).
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 *
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 * Permission to use, modify and distribute this software is granted
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 * provided that this copyright notice appears in all copies. For
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 * precise terms see the accompanying LICENSE file.
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 *
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 * This software is provided "AS IS" with no warranty of any kind,
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 * express or implied, and with no claim as to its suitability for any
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 * purpose.
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 *
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 */
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#ifndef LEMON_GRAPH_TO_EPS_H
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#define LEMON_GRAPH_TO_EPS_H
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#include<iostream>
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#include<fstream>
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#include<sstream>
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#include<algorithm>
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#include<vector>
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#ifndef WIN32
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#include<sys/time.h>
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#include<ctime>
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#else
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#define WIN32_LEAN_AND_MEAN
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#define NOMINMAX
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#include<windows.h>
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#endif
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#include<lemon/math.h>
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#include<lemon/bits/invalid.h>
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#include<lemon/dim2.h>
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#include<lemon/maps.h>
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#include<lemon/color.h>
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#include<lemon/bits/bezier.h>
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///\ingroup eps_io
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///\file
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///\brief A well configurable tool for visualizing graphs
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namespace lemon {
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  namespace _graph_to_eps_bits {
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    template<class MT>
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    class _NegY {
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    public:
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      typedef typename MT::Key Key;
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      typedef typename MT::Value Value;
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      const MT &map;
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      int yscale;
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      _NegY(const MT &m,bool b) : map(m), yscale(1-b*2) {}
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      Value operator[](Key n) { return Value(map[n].x,map[n].y*yscale);}
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    };
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  }
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///Default traits class of \ref GraphToEps
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///Default traits class of \ref GraphToEps.
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///
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///\c G is the type of the underlying graph.
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template<class G>
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struct DefaultGraphToEpsTraits
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{
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  typedef G Graph;
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  typedef typename Graph::Node Node;
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  typedef typename Graph::NodeIt NodeIt;
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  typedef typename Graph::Arc Arc;
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  typedef typename Graph::ArcIt ArcIt;
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  typedef typename Graph::InArcIt InArcIt;
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  typedef typename Graph::OutArcIt OutArcIt;
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  const Graph &g;
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  std::ostream& os;
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  typedef ConstMap<typename Graph::Node,dim2::Point<double> > CoordsMapType;
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  CoordsMapType _coords;
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  ConstMap<typename Graph::Node,double > _nodeSizes;
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  ConstMap<typename Graph::Node,int > _nodeShapes;
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  ConstMap<typename Graph::Node,Color > _nodeColors;
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  ConstMap<typename Graph::Arc,Color > _arcColors;
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  ConstMap<typename Graph::Arc,double > _arcWidths;
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  double _arcWidthScale;
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  double _nodeScale;
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  double _xBorder, _yBorder;
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  double _scale;
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  double _nodeBorderQuotient;
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  bool _drawArrows;
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  double _arrowLength, _arrowWidth;
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  bool _showNodes, _showArcs;
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  bool _enableParallel;
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  double _parArcDist;
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  bool _showNodeText;
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  ConstMap<typename Graph::Node,bool > _nodeTexts;  
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  double _nodeTextSize;
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  bool _showNodePsText;
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  ConstMap<typename Graph::Node,bool > _nodePsTexts;  
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  char *_nodePsTextsPreamble;
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  bool _undirected;
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  bool _pleaseRemoveOsStream;
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  bool _scaleToA4;
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  std::string _title;
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  std::string _copyright;
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  enum NodeTextColorType 
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    { DIST_COL=0, DIST_BW=1, CUST_COL=2, SAME_COL=3 } _nodeTextColorType;
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  ConstMap<typename Graph::Node,Color > _nodeTextColors;
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  bool _autoNodeScale;
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  bool _autoArcWidthScale;
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  bool _absoluteNodeSizes;
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  bool _absoluteArcWidths;
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  bool _negY;
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  bool _preScale;
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  ///Constructor
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  ///Constructor
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  ///\param _g  Reference to the graph to be printed.
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  ///\param _os Reference to the output stream.
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  ///\param _os Reference to the output stream. By default it is <tt>std::cout</tt>.
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  ///\param _pros If it is \c true, then the \c ostream referenced by \c _os
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  ///will be explicitly deallocated by the destructor.
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  DefaultGraphToEpsTraits(const G &_g,std::ostream& _os=std::cout,
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			  bool _pros=false) :
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    g(_g), os(_os),
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    _coords(dim2::Point<double>(1,1)), _nodeSizes(1), _nodeShapes(0),
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    _nodeColors(WHITE), _arcColors(BLACK),
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    _arcWidths(1.0), _arcWidthScale(0.003),
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    _nodeScale(.01), _xBorder(10), _yBorder(10), _scale(1.0),
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    _nodeBorderQuotient(.1),
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    _drawArrows(false), _arrowLength(1), _arrowWidth(0.3),
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    _showNodes(true), _showArcs(true),
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    _enableParallel(false), _parArcDist(1),
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    _showNodeText(false), _nodeTexts(false), _nodeTextSize(1),
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    _showNodePsText(false), _nodePsTexts(false), _nodePsTextsPreamble(0),
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    _undirected(lemon::UndirectedTagIndicator<G>::value),
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    _pleaseRemoveOsStream(_pros), _scaleToA4(false),
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    _nodeTextColorType(SAME_COL), _nodeTextColors(BLACK),
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    _autoNodeScale(false),
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    _autoArcWidthScale(false),
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    _absoluteNodeSizes(false),
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    _absoluteArcWidths(false),
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    _negY(false),
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    _preScale(true)
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  {}
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};
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///Auxiliary class to implement the named parameters of \ref graphToEps()
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///Auxiliary class to implement the named parameters of \ref graphToEps().
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///
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///For detailed examples see the \ref graph_to_eps_demo.cc demo file.
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template<class T> class GraphToEps : public T 
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{
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  // Can't believe it is required by the C++ standard
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  using T::g;
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  using T::os;
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  using T::_coords;
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  using T::_nodeSizes;
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  using T::_nodeShapes;
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  using T::_nodeColors;
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  using T::_arcColors;
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  using T::_arcWidths;
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  using T::_arcWidthScale;
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  using T::_nodeScale;
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  using T::_xBorder;
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  using T::_yBorder;
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  using T::_scale;
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  using T::_nodeBorderQuotient;
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  using T::_drawArrows;
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  using T::_arrowLength;
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  using T::_arrowWidth;
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  using T::_showNodes;
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  using T::_showArcs;
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  using T::_enableParallel;
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  using T::_parArcDist;
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  using T::_showNodeText;
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  using T::_nodeTexts;  
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  using T::_nodeTextSize;
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  using T::_showNodePsText;
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  using T::_nodePsTexts;  
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  using T::_nodePsTextsPreamble;
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  using T::_undirected;
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  using T::_pleaseRemoveOsStream;
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  using T::_scaleToA4;
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  using T::_title;
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  using T::_copyright;
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  using T::NodeTextColorType;
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  using T::CUST_COL;
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  using T::DIST_COL;
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  using T::DIST_BW;
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  using T::_nodeTextColorType;
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  using T::_nodeTextColors;
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  using T::_autoNodeScale;
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  using T::_autoArcWidthScale;
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  using T::_absoluteNodeSizes;
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  using T::_absoluteArcWidths;
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  using T::_negY;
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  using T::_preScale;
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  // dradnats ++C eht yb deriuqer si ti eveileb t'naC
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  typedef typename T::Graph Graph;
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  typedef typename Graph::Node Node;
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  typedef typename Graph::NodeIt NodeIt;
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  typedef typename Graph::Arc Arc;
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  typedef typename Graph::ArcIt ArcIt;
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  typedef typename Graph::InArcIt InArcIt;
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  typedef typename Graph::OutArcIt OutArcIt;
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  static const int INTERPOL_PREC;
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  static const double A4HEIGHT;
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  static const double A4WIDTH;
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  static const double A4BORDER;
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  bool dontPrint;
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public:
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  ///Node shapes
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  ///Node shapes.
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  ///
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  enum NodeShapes { 
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    /// = 0
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    ///\image html nodeshape_0.png
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    ///\image latex nodeshape_0.eps "CIRCLE shape (0)" width=2cm
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    CIRCLE=0, 
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    /// = 1
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    ///\image html nodeshape_1.png
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    ///\image latex nodeshape_1.eps "SQUARE shape (1)" width=2cm
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    ///
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    SQUARE=1, 
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    /// = 2
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    ///\image html nodeshape_2.png
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    ///\image latex nodeshape_2.eps "DIAMOND shape (2)" width=2cm
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    ///
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    DIAMOND=2,
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    /// = 3
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    ///\image html nodeshape_3.png
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    ///\image latex nodeshape_2.eps "MALE shape (4)" width=2cm
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    ///
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    MALE=3,
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    /// = 4
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    ///\image html nodeshape_4.png
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    ///\image latex nodeshape_2.eps "FEMALE shape (4)" width=2cm
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    ///
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    FEMALE=4
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  };
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private:
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  class arcLess {
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    const Graph &g;
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  public:
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    arcLess(const Graph &_g) : g(_g) {}
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    bool operator()(Arc a,Arc b) const 
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    {
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      Node ai=std::min(g.source(a),g.target(a));
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      Node aa=std::max(g.source(a),g.target(a));
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      Node bi=std::min(g.source(b),g.target(b));
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      Node ba=std::max(g.source(b),g.target(b));
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      return ai<bi ||
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	(ai==bi && (aa < ba || 
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		    (aa==ba && ai==g.source(a) && bi==g.target(b))));
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    }
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  };
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  bool isParallel(Arc e,Arc f) const
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  {
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    return (g.source(e)==g.source(f)&&
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	    g.target(e)==g.target(f)) ||
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      (g.source(e)==g.target(f)&&
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       g.target(e)==g.source(f));
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  }
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  template<class TT>
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  static std::string psOut(const dim2::Point<TT> &p) 
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    {
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      std::ostringstream os;	
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      os << p.x << ' ' << p.y;
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      return os.str();
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    }
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  static std::string psOut(const Color &c) 
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    {
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      std::ostringstream os;	
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      os << c.red() << ' ' << c.green() << ' ' << c.blue();
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      return os.str();
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    }
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public:
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  GraphToEps(const T &t) : T(t), dontPrint(false) {};
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  template<class X> struct CoordsTraits : public T {
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  typedef X CoordsMapType;
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    const X &_coords;
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    CoordsTraits(const T &t,const X &x) : T(t), _coords(x) {}
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  };
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  ///Sets the map of the node coordinates
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  ///Sets the map of the node coordinates.
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  ///\param x must be a node map with \ref dim2::Point "dim2::Point<double>" or
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  ///\ref dim2::Point "dim2::Point<int>" values. 
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  template<class X> GraphToEps<CoordsTraits<X> > coords(const X &x) {
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    dontPrint=true;
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    return GraphToEps<CoordsTraits<X> >(CoordsTraits<X>(*this,x));
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  }
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  template<class X> struct NodeSizesTraits : public T {
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    const X &_nodeSizes;
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    NodeSizesTraits(const T &t,const X &x) : T(t), _nodeSizes(x) {}
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  };
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  ///Sets the map of the node sizes
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  ///Sets the map of the node sizes.
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  ///\param x must be a node map with \c double (or convertible) values. 
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  template<class X> GraphToEps<NodeSizesTraits<X> > nodeSizes(const X &x)
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  {
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    dontPrint=true;
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    return GraphToEps<NodeSizesTraits<X> >(NodeSizesTraits<X>(*this,x));
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  }
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  template<class X> struct NodeShapesTraits : public T {
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    const X &_nodeShapes;
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    NodeShapesTraits(const T &t,const X &x) : T(t), _nodeShapes(x) {}
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  };
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  ///Sets the map of the node shapes
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  ///Sets the map of the node shapes.
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  ///The available shape values
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  ///can be found in \ref NodeShapes "enum NodeShapes".
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  ///\param x must be a node map with \c int (or convertible) values. 
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  ///\sa NodeShapes
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  template<class X> GraphToEps<NodeShapesTraits<X> > nodeShapes(const X &x)
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  {
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    dontPrint=true;
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    return GraphToEps<NodeShapesTraits<X> >(NodeShapesTraits<X>(*this,x));
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  }
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  template<class X> struct NodeTextsTraits : public T {
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    const X &_nodeTexts;
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    NodeTextsTraits(const T &t,const X &x) : T(t), _nodeTexts(x) {}
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  };
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  ///Sets the text printed on the nodes
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  ///Sets the text printed on the nodes.
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  ///\param x must be a node map with type that can be pushed to a standard
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  ///\c ostream. 
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  template<class X> GraphToEps<NodeTextsTraits<X> > nodeTexts(const X &x)
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  {
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    dontPrint=true;
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    _showNodeText=true;
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    return GraphToEps<NodeTextsTraits<X> >(NodeTextsTraits<X>(*this,x));
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  }
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  template<class X> struct NodePsTextsTraits : public T {
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    const X &_nodePsTexts;
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    NodePsTextsTraits(const T &t,const X &x) : T(t), _nodePsTexts(x) {}
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  };
alpar@128
   393
  ///Inserts a PostScript block to the nodes
alpar@128
   394
alpar@128
   395
  ///With this command it is possible to insert a verbatim PostScript
alpar@128
   396
  ///block to the nodes.
kpeter@206
   397
  ///The PS current point will be moved to the center of the node before
alpar@128
   398
  ///the PostScript block inserted.
alpar@128
   399
  ///
alpar@128
   400
  ///Before and after the block a newline character is inserted so you
alpar@128
   401
  ///don't have to bother with the separators.
alpar@128
   402
  ///
alpar@128
   403
  ///\param x must be a node map with type that can be pushed to a standard
kpeter@206
   404
  ///\c ostream.
alpar@128
   405
  ///
alpar@128
   406
  ///\sa nodePsTextsPreamble()
alpar@128
   407
  template<class X> GraphToEps<NodePsTextsTraits<X> > nodePsTexts(const X &x)
alpar@128
   408
  {
alpar@128
   409
    dontPrint=true;
alpar@128
   410
    _showNodePsText=true;
alpar@128
   411
    return GraphToEps<NodePsTextsTraits<X> >(NodePsTextsTraits<X>(*this,x));
alpar@128
   412
  }
alpar@128
   413
  template<class X> struct ArcWidthsTraits : public T {
alpar@128
   414
    const X &_arcWidths;
alpar@128
   415
    ArcWidthsTraits(const T &t,const X &x) : T(t), _arcWidths(x) {}
alpar@128
   416
  };
alpar@128
   417
  ///Sets the map of the arc widths
alpar@128
   418
kpeter@206
   419
  ///Sets the map of the arc widths.
kpeter@157
   420
  ///\param x must be an arc map with \c double (or convertible) values. 
alpar@128
   421
  template<class X> GraphToEps<ArcWidthsTraits<X> > arcWidths(const X &x)
alpar@128
   422
  {
alpar@128
   423
    dontPrint=true;
alpar@128
   424
    return GraphToEps<ArcWidthsTraits<X> >(ArcWidthsTraits<X>(*this,x));
alpar@128
   425
  }
alpar@128
   426
alpar@128
   427
  template<class X> struct NodeColorsTraits : public T {
alpar@128
   428
    const X &_nodeColors;
alpar@128
   429
    NodeColorsTraits(const T &t,const X &x) : T(t), _nodeColors(x) {}
alpar@128
   430
  };
alpar@128
   431
  ///Sets the map of the node colors
alpar@128
   432
kpeter@206
   433
  ///Sets the map of the node colors.
alpar@128
   434
  ///\param x must be a node map with \ref Color values.
alpar@128
   435
  ///
alpar@128
   436
  ///\sa Palette
alpar@128
   437
  template<class X> GraphToEps<NodeColorsTraits<X> >
alpar@128
   438
  nodeColors(const X &x)
alpar@128
   439
  {
alpar@128
   440
    dontPrint=true;
alpar@128
   441
    return GraphToEps<NodeColorsTraits<X> >(NodeColorsTraits<X>(*this,x));
alpar@128
   442
  }
alpar@128
   443
  template<class X> struct NodeTextColorsTraits : public T {
alpar@128
   444
    const X &_nodeTextColors;
alpar@128
   445
    NodeTextColorsTraits(const T &t,const X &x) : T(t), _nodeTextColors(x) {}
alpar@128
   446
  };
alpar@128
   447
  ///Sets the map of the node text colors
alpar@128
   448
kpeter@206
   449
  ///Sets the map of the node text colors.
alpar@128
   450
  ///\param x must be a node map with \ref Color values. 
alpar@128
   451
  ///
alpar@128
   452
  ///\sa Palette
alpar@128
   453
  template<class X> GraphToEps<NodeTextColorsTraits<X> >
alpar@128
   454
  nodeTextColors(const X &x)
alpar@128
   455
  {
alpar@128
   456
    dontPrint=true;
alpar@128
   457
    _nodeTextColorType=CUST_COL;
alpar@128
   458
    return GraphToEps<NodeTextColorsTraits<X> >
alpar@128
   459
      (NodeTextColorsTraits<X>(*this,x));
alpar@128
   460
  }
alpar@128
   461
  template<class X> struct ArcColorsTraits : public T {
alpar@128
   462
    const X &_arcColors;
alpar@128
   463
    ArcColorsTraits(const T &t,const X &x) : T(t), _arcColors(x) {}
alpar@128
   464
  };
alpar@128
   465
  ///Sets the map of the arc colors
alpar@128
   466
kpeter@206
   467
  ///Sets the map of the arc colors.
kpeter@157
   468
  ///\param x must be an arc map with \ref Color values. 
alpar@128
   469
  ///
alpar@128
   470
  ///\sa Palette
alpar@128
   471
  template<class X> GraphToEps<ArcColorsTraits<X> >
alpar@128
   472
  arcColors(const X &x)
alpar@128
   473
  {
alpar@128
   474
    dontPrint=true;
alpar@128
   475
    return GraphToEps<ArcColorsTraits<X> >(ArcColorsTraits<X>(*this,x));
alpar@128
   476
  }
alpar@128
   477
  ///Sets a global scale factor for node sizes
alpar@128
   478
alpar@128
   479
  ///Sets a global scale factor for node sizes.
alpar@128
   480
  /// 
alpar@128
   481
  /// If nodeSizes() is not given, this function simply sets the node
alpar@128
   482
  /// sizes to \c d.  If nodeSizes() is given, but
alpar@128
   483
  /// autoNodeScale() is not, then the node size given by
alpar@128
   484
  /// nodeSizes() will be multiplied by the value \c d.
alpar@128
   485
  /// If both nodeSizes() and autoNodeScale() are used, then the
alpar@128
   486
  /// node sizes will be scaled in such a way that the greatest size will be
alpar@128
   487
  /// equal to \c d.
alpar@128
   488
  /// \sa nodeSizes()
alpar@128
   489
  /// \sa autoNodeScale()
alpar@132
   490
  GraphToEps<T> &nodeScale(double d=.01) {_nodeScale=d;return *this;}
kpeter@206
   491
  ///Turns on/off the automatic node size scaling.
alpar@128
   492
kpeter@206
   493
  ///Turns on/off the automatic node size scaling.
alpar@128
   494
  ///
alpar@128
   495
  ///\sa nodeScale()
alpar@128
   496
  ///
alpar@128
   497
  GraphToEps<T> &autoNodeScale(bool b=true) {
alpar@128
   498
    _autoNodeScale=b;return *this;
alpar@128
   499
  }
alpar@128
   500
kpeter@206
   501
  ///Turns on/off the absolutematic node size scaling.
alpar@128
   502
kpeter@206
   503
  ///Turns on/off the absolutematic node size scaling.
alpar@128
   504
  ///
alpar@128
   505
  ///\sa nodeScale()
alpar@128
   506
  ///
alpar@128
   507
  GraphToEps<T> &absoluteNodeSizes(bool b=true) {
alpar@128
   508
    _absoluteNodeSizes=b;return *this;
alpar@128
   509
  }
alpar@128
   510
alpar@128
   511
  ///Negates the Y coordinates.
alpar@128
   512
  GraphToEps<T> &negateY(bool b=true) {
alpar@128
   513
    _negY=b;return *this;
alpar@128
   514
  }
alpar@128
   515
alpar@133
   516
  ///Turn on/off pre-scaling
alpar@128
   517
alpar@128
   518
  ///By default graphToEps() rescales the whole image in order to avoid
alpar@128
   519
  ///very big or very small bounding boxes.
alpar@128
   520
  ///
alpar@128
   521
  ///This (p)rescaling can be turned off with this function.
alpar@128
   522
  ///
alpar@128
   523
  GraphToEps<T> &preScale(bool b=true) {
alpar@128
   524
    _preScale=b;return *this;
alpar@128
   525
  }
alpar@128
   526
alpar@128
   527
  ///Sets a global scale factor for arc widths
alpar@128
   528
alpar@128
   529
  /// Sets a global scale factor for arc widths.
alpar@128
   530
  ///
alpar@128
   531
  /// If arcWidths() is not given, this function simply sets the arc
alpar@128
   532
  /// widths to \c d.  If arcWidths() is given, but
alpar@128
   533
  /// autoArcWidthScale() is not, then the arc withs given by
alpar@128
   534
  /// arcWidths() will be multiplied by the value \c d.
alpar@128
   535
  /// If both arcWidths() and autoArcWidthScale() are used, then the
alpar@128
   536
  /// arc withs will be scaled in such a way that the greatest width will be
alpar@128
   537
  /// equal to \c d.
alpar@132
   538
  GraphToEps<T> &arcWidthScale(double d=.003) {_arcWidthScale=d;return *this;}
alpar@128
   539
  ///Turns on/off the automatic arc width scaling.
alpar@128
   540
alpar@128
   541
  ///Turns on/off the automatic arc width scaling.
alpar@128
   542
  ///
alpar@128
   543
  ///\sa arcWidthScale()
alpar@128
   544
  ///
alpar@128
   545
  GraphToEps<T> &autoArcWidthScale(bool b=true) {
alpar@128
   546
    _autoArcWidthScale=b;return *this;
alpar@128
   547
  }
alpar@128
   548
  ///Turns on/off the absolutematic arc width scaling.
alpar@128
   549
alpar@128
   550
  ///Turns on/off the absolutematic arc width scaling.
alpar@128
   551
  ///
alpar@128
   552
  ///\sa arcWidthScale()
alpar@128
   553
  ///
alpar@128
   554
  GraphToEps<T> &absoluteArcWidths(bool b=true) {
alpar@128
   555
    _absoluteArcWidths=b;return *this;
alpar@128
   556
  }
alpar@128
   557
  ///Sets a global scale factor for the whole picture
alpar@128
   558
  GraphToEps<T> &scale(double d) {_scale=d;return *this;}
alpar@128
   559
  ///Sets the width of the border around the picture
alpar@133
   560
  GraphToEps<T> &border(double b=10) {_xBorder=_yBorder=b;return *this;}
alpar@128
   561
  ///Sets the width of the border around the picture
alpar@128
   562
  GraphToEps<T> &border(double x, double y) {
alpar@128
   563
    _xBorder=x;_yBorder=y;return *this;
alpar@128
   564
  }
alpar@128
   565
  ///Sets whether to draw arrows
alpar@128
   566
  GraphToEps<T> &drawArrows(bool b=true) {_drawArrows=b;return *this;}
alpar@128
   567
  ///Sets the length of the arrowheads
alpar@133
   568
  GraphToEps<T> &arrowLength(double d=1.0) {_arrowLength*=d;return *this;}
alpar@128
   569
  ///Sets the width of the arrowheads
alpar@133
   570
  GraphToEps<T> &arrowWidth(double d=.3) {_arrowWidth*=d;return *this;}
alpar@128
   571
  
alpar@128
   572
  ///Scales the drawing to fit to A4 page
alpar@128
   573
  GraphToEps<T> &scaleToA4() {_scaleToA4=true;return *this;}
alpar@128
   574
  
alpar@128
   575
  ///Enables parallel arcs
alpar@128
   576
  GraphToEps<T> &enableParallel(bool b=true) {_enableParallel=b;return *this;}
alpar@128
   577
  
kpeter@206
   578
  ///Sets the distance between parallel arcs
alpar@128
   579
  GraphToEps<T> &parArcDist(double d) {_parArcDist*=d;return *this;}
alpar@128
   580
  
alpar@128
   581
  ///Hides the arcs
alpar@128
   582
  GraphToEps<T> &hideArcs(bool b=true) {_showArcs=!b;return *this;}
alpar@128
   583
  ///Hides the nodes
alpar@128
   584
  GraphToEps<T> &hideNodes(bool b=true) {_showNodes=!b;return *this;}
alpar@128
   585
  
alpar@128
   586
  ///Sets the size of the node texts
alpar@128
   587
  GraphToEps<T> &nodeTextSize(double d) {_nodeTextSize=d;return *this;}
alpar@128
   588
alpar@128
   589
  ///Sets the color of the node texts to be different from the node color
alpar@128
   590
alpar@128
   591
  ///Sets the color of the node texts to be as different from the node color
kpeter@206
   592
  ///as it is possible.
alpar@128
   593
  GraphToEps<T> &distantColorNodeTexts()
alpar@128
   594
  {_nodeTextColorType=DIST_COL;return *this;}
alpar@128
   595
  ///Sets the color of the node texts to be black or white and always visible.
alpar@128
   596
alpar@128
   597
  ///Sets the color of the node texts to be black or white according to
kpeter@206
   598
  ///which is more different from the node color.
alpar@128
   599
  GraphToEps<T> &distantBWNodeTexts()
alpar@128
   600
  {_nodeTextColorType=DIST_BW;return *this;}
alpar@128
   601
alpar@128
   602
  ///Gives a preamble block for node Postscript block.
alpar@128
   603
  
alpar@128
   604
  ///Gives a preamble block for node Postscript block.
alpar@128
   605
  ///
alpar@128
   606
  ///\sa nodePsTexts()
alpar@128
   607
  GraphToEps<T> & nodePsTextsPreamble(const char *str) {
alpar@128
   608
    _nodePsTextsPreamble=str ;return *this;
alpar@128
   609
  }
kpeter@206
   610
  ///Sets whether the graph is undirected
alpar@128
   611
kpeter@206
   612
  ///Sets whether the graph is undirected.
alpar@128
   613
  ///
alpar@133
   614
  ///This setting is the default for undirected graphs.
alpar@133
   615
  ///
alpar@133
   616
  ///\sa directed()
alpar@133
   617
   GraphToEps<T> &undirected(bool b=true) {_undirected=b;return *this;}
alpar@128
   618
kpeter@206
   619
  ///Sets whether the graph is directed
alpar@128
   620
kpeter@206
   621
  ///Sets whether the graph is directed.
alpar@128
   622
  ///Use it to show the edges as a pair of directed ones.
alpar@133
   623
  ///
alpar@133
   624
  ///This setting is the default for digraphs.
alpar@133
   625
  ///
alpar@133
   626
  ///\sa undirected()
alpar@131
   627
  GraphToEps<T> &directed(bool b=true) {_undirected=!b;return *this;}
alpar@133
   628
  
alpar@128
   629
  ///Sets the title.
alpar@128
   630
alpar@128
   631
  ///Sets the title of the generated image,
alpar@128
   632
  ///namely it inserts a <tt>%%Title:</tt> DSC field to the header of
alpar@128
   633
  ///the EPS file.
alpar@128
   634
  GraphToEps<T> &title(const std::string &t) {_title=t;return *this;}
alpar@128
   635
  ///Sets the copyright statement.
alpar@128
   636
alpar@128
   637
  ///Sets the copyright statement of the generated image,
alpar@128
   638
  ///namely it inserts a <tt>%%Copyright:</tt> DSC field to the header of
alpar@128
   639
  ///the EPS file.
alpar@128
   640
  GraphToEps<T> &copyright(const std::string &t) {_copyright=t;return *this;}
alpar@128
   641
alpar@128
   642
protected:
alpar@128
   643
  bool isInsideNode(dim2::Point<double> p, double r,int t) 
alpar@128
   644
  {
alpar@128
   645
    switch(t) {
alpar@128
   646
    case CIRCLE:
alpar@128
   647
    case MALE:
alpar@128
   648
    case FEMALE:
alpar@128
   649
      return p.normSquare()<=r*r;
alpar@128
   650
    case SQUARE:
alpar@128
   651
      return p.x<=r&&p.x>=-r&&p.y<=r&&p.y>=-r;
alpar@128
   652
    case DIAMOND:
alpar@128
   653
      return p.x+p.y<=r && p.x-p.y<=r && -p.x+p.y<=r && -p.x-p.y<=r;
alpar@128
   654
    }
alpar@128
   655
    return false;
alpar@128
   656
  }
alpar@128
   657
alpar@128
   658
public:
alpar@128
   659
  ~GraphToEps() { }
alpar@128
   660
  
alpar@128
   661
  ///Draws the graph.
alpar@128
   662
alpar@128
   663
  ///Like other functions using
alpar@128
   664
  ///\ref named-templ-func-param "named template parameters",
alpar@133
   665
  ///this function calls the algorithm itself, i.e. in this case
alpar@128
   666
  ///it draws the graph.
alpar@128
   667
  void run() {
alpar@133
   668
    //\todo better 'epsilon' would be nice here.
alpar@128
   669
    const double EPSILON=1e-9;
alpar@128
   670
    if(dontPrint) return;
alpar@128
   671
    
alpar@131
   672
    _graph_to_eps_bits::_NegY<typename T::CoordsMapType>
alpar@131
   673
      mycoords(_coords,_negY);
alpar@128
   674
alpar@128
   675
    os << "%!PS-Adobe-2.0 EPSF-2.0\n";
alpar@128
   676
    if(_title.size()>0) os << "%%Title: " << _title << '\n';
alpar@128
   677
     if(_copyright.size()>0) os << "%%Copyright: " << _copyright << '\n';
alpar@128
   678
    os << "%%Creator: LEMON, graphToEps()\n";
deba@134
   679
deba@134
   680
    {    
deba@134
   681
#ifndef WIN32 
alpar@128
   682
      timeval tv;
alpar@128
   683
      gettimeofday(&tv, 0);
deba@134
   684
deba@134
   685
      char cbuf[26];
alpar@128
   686
      ctime_r(&tv.tv_sec,cbuf);
alpar@128
   687
      os << "%%CreationDate: " << cbuf;
deba@134
   688
#else
deba@134
   689
      SYSTEMTIME time;
deba@134
   690
      char buf1[11], buf2[9], buf3[5];
deba@134
   691
      
deba@134
   692
      GetSystemTime(&time);
deba@134
   693
      if (GetDateFormat(LOCALE_USER_DEFAULT, 0, &time, 
deba@134
   694
			"ddd MMM dd", buf1, 11) &&
deba@134
   695
	  GetTimeFormat(LOCALE_USER_DEFAULT, 0, &time, 
deba@134
   696
			"HH':'mm':'ss", buf2, 9) &&
deba@134
   697
	  GetDateFormat(LOCALE_USER_DEFAULT, 0, &time, 
deba@134
   698
				"yyyy", buf3, 5)) {
deba@134
   699
	os << "%%CreationDate: " << buf1 << ' ' 
deba@134
   700
	   << buf2 << ' ' << buf3 << std::endl;
deba@134
   701
      }	  
deba@134
   702
#endif
alpar@128
   703
    }
alpar@128
   704
alpar@128
   705
    if (_autoArcWidthScale) {
alpar@128
   706
      double max_w=0;
alpar@128
   707
      for(ArcIt e(g);e!=INVALID;++e)
alpar@128
   708
	max_w=std::max(double(_arcWidths[e]),max_w);
kpeter@206
   709
      //\todo better 'epsilon' would be nice here.
alpar@128
   710
      if(max_w>EPSILON) {
alpar@128
   711
	_arcWidthScale/=max_w;
alpar@128
   712
      }
alpar@128
   713
    }
alpar@128
   714
alpar@128
   715
    if (_autoNodeScale) {
alpar@128
   716
      double max_s=0;
alpar@128
   717
      for(NodeIt n(g);n!=INVALID;++n)
alpar@128
   718
	max_s=std::max(double(_nodeSizes[n]),max_s);
kpeter@206
   719
      //\todo better 'epsilon' would be nice here.
alpar@128
   720
      if(max_s>EPSILON) {
alpar@128
   721
	_nodeScale/=max_s;
alpar@128
   722
      }
alpar@128
   723
    }
alpar@128
   724
alpar@128
   725
    double diag_len = 1;
alpar@128
   726
    if(!(_absoluteNodeSizes&&_absoluteArcWidths)) {
alpar@128
   727
      dim2::BoundingBox<double> bb;
alpar@128
   728
      for(NodeIt n(g);n!=INVALID;++n) bb.add(mycoords[n]);
alpar@128
   729
      if (bb.empty()) {
alpar@128
   730
	bb = dim2::BoundingBox<double>(dim2::Point<double>(0,0));
alpar@128
   731
      }
alpar@128
   732
      diag_len = std::sqrt((bb.bottomLeft()-bb.topRight()).normSquare());
alpar@128
   733
      if(diag_len<EPSILON) diag_len = 1;
alpar@128
   734
      if(!_absoluteNodeSizes) _nodeScale*=diag_len;
alpar@128
   735
      if(!_absoluteArcWidths) _arcWidthScale*=diag_len;
alpar@128
   736
    }
alpar@128
   737
    
alpar@128
   738
    dim2::BoundingBox<double> bb;
alpar@128
   739
    for(NodeIt n(g);n!=INVALID;++n) {
alpar@128
   740
      double ns=_nodeSizes[n]*_nodeScale;
alpar@128
   741
      dim2::Point<double> p(ns,ns);
alpar@128
   742
      switch(_nodeShapes[n]) {
alpar@128
   743
      case CIRCLE:
alpar@128
   744
      case SQUARE:
alpar@128
   745
      case DIAMOND:
alpar@128
   746
	bb.add(p+mycoords[n]);
alpar@128
   747
	bb.add(-p+mycoords[n]);
alpar@128
   748
	break;
alpar@128
   749
      case MALE:
alpar@128
   750
	bb.add(-p+mycoords[n]);
alpar@128
   751
	bb.add(dim2::Point<double>(1.5*ns,1.5*std::sqrt(3.0)*ns)+mycoords[n]);
alpar@128
   752
	break;
alpar@128
   753
      case FEMALE:
alpar@128
   754
	bb.add(p+mycoords[n]);
alpar@128
   755
	bb.add(dim2::Point<double>(-ns,-3.01*ns)+mycoords[n]);
alpar@128
   756
	break;
alpar@128
   757
      }
alpar@128
   758
    }
alpar@128
   759
    if (bb.empty()) {
alpar@128
   760
      bb = dim2::BoundingBox<double>(dim2::Point<double>(0,0));
alpar@128
   761
    }
alpar@128
   762
    
alpar@128
   763
    if(_scaleToA4)
alpar@128
   764
      os <<"%%BoundingBox: 0 0 596 842\n%%DocumentPaperSizes: a4\n";
alpar@128
   765
    else {
alpar@128
   766
      if(_preScale) {
alpar@128
   767
	//Rescale so that BoundingBox won't be neither to big nor too small.
alpar@128
   768
	while(bb.height()*_scale>1000||bb.width()*_scale>1000) _scale/=10;
alpar@128
   769
	while(bb.height()*_scale<100||bb.width()*_scale<100) _scale*=10;
alpar@128
   770
      }
alpar@128
   771
      
alpar@128
   772
      os << "%%BoundingBox: "
alpar@128
   773
	 << int(floor(bb.left()   * _scale - _xBorder)) << ' '
alpar@128
   774
	 << int(floor(bb.bottom() * _scale - _yBorder)) << ' '
alpar@128
   775
	 << int(ceil(bb.right()  * _scale + _xBorder)) << ' '
alpar@128
   776
	 << int(ceil(bb.top()    * _scale + _yBorder)) << '\n';
alpar@128
   777
    }
alpar@128
   778
    
alpar@128
   779
    os << "%%EndComments\n";
alpar@128
   780
    
alpar@128
   781
    //x1 y1 x2 y2 x3 y3 cr cg cb w
alpar@128
   782
    os << "/lb { setlinewidth setrgbcolor newpath moveto\n"
alpar@128
   783
       << "      4 2 roll 1 index 1 index curveto stroke } bind def\n";
alpar@128
   784
    os << "/l { setlinewidth setrgbcolor newpath moveto lineto stroke } bind def\n";
alpar@128
   785
    //x y r
alpar@128
   786
    os << "/c { newpath dup 3 index add 2 index moveto 0 360 arc closepath } bind def\n";
alpar@128
   787
    //x y r
alpar@128
   788
    os << "/sq { newpath 2 index 1 index add 2 index 2 index add moveto\n"
alpar@128
   789
       << "      2 index 1 index sub 2 index 2 index add lineto\n"
alpar@128
   790
       << "      2 index 1 index sub 2 index 2 index sub lineto\n"
alpar@128
   791
       << "      2 index 1 index add 2 index 2 index sub lineto\n"
alpar@128
   792
       << "      closepath pop pop pop} bind def\n";
alpar@128
   793
    //x y r
alpar@128
   794
    os << "/di { newpath 2 index 1 index add 2 index moveto\n"
alpar@128
   795
       << "      2 index             2 index 2 index add lineto\n"
alpar@128
   796
       << "      2 index 1 index sub 2 index             lineto\n"
alpar@128
   797
       << "      2 index             2 index 2 index sub lineto\n"
alpar@128
   798
       << "      closepath pop pop pop} bind def\n";
alpar@128
   799
    // x y r cr cg cb
alpar@128
   800
    os << "/nc { 0 0 0 setrgbcolor 5 index 5 index 5 index c fill\n"
alpar@128
   801
       << "     setrgbcolor " << 1+_nodeBorderQuotient << " div c fill\n"
alpar@128
   802
       << "   } bind def\n";
alpar@128
   803
    os << "/nsq { 0 0 0 setrgbcolor 5 index 5 index 5 index sq fill\n"
alpar@128
   804
       << "     setrgbcolor " << 1+_nodeBorderQuotient << " div sq fill\n"
alpar@128
   805
       << "   } bind def\n";
alpar@128
   806
    os << "/ndi { 0 0 0 setrgbcolor 5 index 5 index 5 index di fill\n"
alpar@128
   807
       << "     setrgbcolor " << 1+_nodeBorderQuotient << " div di fill\n"
alpar@128
   808
       << "   } bind def\n";
alpar@128
   809
    os << "/nfemale { 0 0 0 setrgbcolor 3 index "
alpar@128
   810
       << _nodeBorderQuotient/(1+_nodeBorderQuotient)
alpar@128
   811
       << " 1.5 mul mul setlinewidth\n"
alpar@128
   812
       << "  newpath 5 index 5 index moveto "
alpar@128
   813
       << "5 index 5 index 5 index 3.01 mul sub\n"
alpar@128
   814
       << "  lineto 5 index 4 index .7 mul sub 5 index 5 index 2.2 mul sub moveto\n"
alpar@128
   815
       << "  5 index 4 index .7 mul add 5 index 5 index 2.2 mul sub lineto stroke\n"
alpar@128
   816
       << "  5 index 5 index 5 index c fill\n"
alpar@128
   817
       << "  setrgbcolor " << 1+_nodeBorderQuotient << " div c fill\n"
alpar@128
   818
       << "  } bind def\n";
alpar@128
   819
    os << "/nmale {\n"
alpar@128
   820
       << "  0 0 0 setrgbcolor 3 index "
alpar@128
   821
       << _nodeBorderQuotient/(1+_nodeBorderQuotient)
alpar@128
   822
       <<" 1.5 mul mul setlinewidth\n"
alpar@128
   823
       << "  newpath 5 index 5 index moveto\n"
alpar@128
   824
       << "  5 index 4 index 1 mul 1.5 mul add\n"
alpar@128
   825
       << "  5 index 5 index 3 sqrt 1.5 mul mul add\n"
alpar@128
   826
       << "  1 index 1 index lineto\n"
alpar@128
   827
       << "  1 index 1 index 7 index sub moveto\n"
alpar@128
   828
       << "  1 index 1 index lineto\n"
alpar@128
   829
       << "  exch 5 index 3 sqrt .5 mul mul sub exch 5 index .5 mul sub lineto\n"
alpar@128
   830
       << "  stroke\n"
alpar@128
   831
       << "  5 index 5 index 5 index c fill\n"
alpar@128
   832
       << "  setrgbcolor " << 1+_nodeBorderQuotient << " div c fill\n"
alpar@128
   833
       << "  } bind def\n";
alpar@128
   834
    
alpar@128
   835
alpar@128
   836
    os << "/arrl " << _arrowLength << " def\n";
alpar@128
   837
    os << "/arrw " << _arrowWidth << " def\n";
alpar@128
   838
    // l dx_norm dy_norm
alpar@128
   839
    os << "/lrl { 2 index mul exch 2 index mul exch rlineto pop} bind def\n";
alpar@128
   840
    //len w dx_norm dy_norm x1 y1 cr cg cb
alpar@128
   841
    os << "/arr { setrgbcolor /y1 exch def /x1 exch def /dy exch def /dx exch def\n"
alpar@128
   842
       << "       /w exch def /len exch def\n"
alpar@128
   843
      //	 << "       0.1 setlinewidth x1 y1 moveto dx len mul dy len mul rlineto stroke"
alpar@128
   844
       << "       newpath x1 dy w 2 div mul add y1 dx w 2 div mul sub moveto\n"
alpar@128
   845
       << "       len w sub arrl sub dx dy lrl\n"
alpar@128
   846
       << "       arrw dy dx neg lrl\n"
alpar@128
   847
       << "       dx arrl w add mul dy w 2 div arrw add mul sub\n"
alpar@128
   848
       << "       dy arrl w add mul dx w 2 div arrw add mul add rlineto\n"
alpar@128
   849
       << "       dx arrl w add mul neg dy w 2 div arrw add mul sub\n"
alpar@128
   850
       << "       dy arrl w add mul neg dx w 2 div arrw add mul add rlineto\n"
alpar@128
   851
       << "       arrw dy dx neg lrl\n"
alpar@128
   852
       << "       len w sub arrl sub neg dx dy lrl\n"
alpar@128
   853
       << "       closepath fill } bind def\n";
alpar@128
   854
    os << "/cshow { 2 index 2 index moveto dup stringwidth pop\n"
alpar@128
   855
       << "         neg 2 div fosi .35 mul neg rmoveto show pop pop} def\n";
alpar@128
   856
alpar@128
   857
    os << "\ngsave\n";
alpar@128
   858
    if(_scaleToA4)
alpar@128
   859
      if(bb.height()>bb.width()) {
alpar@128
   860
	double sc= std::min((A4HEIGHT-2*A4BORDER)/bb.height(),
alpar@128
   861
		  (A4WIDTH-2*A4BORDER)/bb.width());
alpar@128
   862
	os << ((A4WIDTH -2*A4BORDER)-sc*bb.width())/2 + A4BORDER << ' '
alpar@128
   863
	   << ((A4HEIGHT-2*A4BORDER)-sc*bb.height())/2 + A4BORDER
alpar@128
   864
	   << " translate\n"
alpar@128
   865
	   << sc << " dup scale\n"
alpar@128
   866
	   << -bb.left() << ' ' << -bb.bottom() << " translate\n";
alpar@128
   867
      }
alpar@128
   868
      else {
alpar@128
   869
	//\todo Verify centering
alpar@128
   870
	double sc= std::min((A4HEIGHT-2*A4BORDER)/bb.width(),
alpar@128
   871
		  (A4WIDTH-2*A4BORDER)/bb.height());
alpar@128
   872
	os << ((A4WIDTH -2*A4BORDER)-sc*bb.height())/2 + A4BORDER << ' '
alpar@128
   873
	   << ((A4HEIGHT-2*A4BORDER)-sc*bb.width())/2 + A4BORDER 
alpar@128
   874
	   << " translate\n"
alpar@128
   875
	   << sc << " dup scale\n90 rotate\n"
alpar@128
   876
	   << -bb.left() << ' ' << -bb.top() << " translate\n";	
alpar@128
   877
	}
alpar@128
   878
    else if(_scale!=1.0) os << _scale << " dup scale\n";
alpar@128
   879
    
alpar@128
   880
    if(_showArcs) {
alpar@128
   881
      os << "%Arcs:\ngsave\n";      
alpar@128
   882
      if(_enableParallel) {
alpar@128
   883
	std::vector<Arc> el;
alpar@128
   884
	for(ArcIt e(g);e!=INVALID;++e)
alpar@128
   885
	  if((!_undirected||g.source(e)<g.target(e))&&_arcWidths[e]>0
alpar@128
   886
	     &&g.source(e)!=g.target(e))
alpar@128
   887
	    el.push_back(e);
alpar@128
   888
	std::sort(el.begin(),el.end(),arcLess(g));
alpar@128
   889
	
alpar@128
   890
	typename std::vector<Arc>::iterator j;
alpar@128
   891
	for(typename std::vector<Arc>::iterator i=el.begin();i!=el.end();i=j) {
alpar@128
   892
	  for(j=i+1;j!=el.end()&&isParallel(*i,*j);++j) ;
alpar@128
   893
alpar@128
   894
	  double sw=0;
alpar@128
   895
	  for(typename std::vector<Arc>::iterator e=i;e!=j;++e)
alpar@128
   896
	    sw+=_arcWidths[*e]*_arcWidthScale+_parArcDist;
alpar@128
   897
	  sw-=_parArcDist;
alpar@128
   898
	  sw/=-2.0;
alpar@128
   899
	  dim2::Point<double>
alpar@128
   900
	    dvec(mycoords[g.target(*i)]-mycoords[g.source(*i)]);
alpar@128
   901
	  double l=std::sqrt(dvec.normSquare()); 
alpar@133
   902
	  //\todo better 'epsilon' would be nice here.
alpar@128
   903
	  dim2::Point<double> d(dvec/std::max(l,EPSILON));
alpar@128
   904
 	  dim2::Point<double> m;
alpar@128
   905
// 	  m=dim2::Point<double>(mycoords[g.target(*i)]+mycoords[g.source(*i)])/2.0;
alpar@128
   906
alpar@128
   907
//  	  m=dim2::Point<double>(mycoords[g.source(*i)])+
alpar@128
   908
// 	    dvec*(double(_nodeSizes[g.source(*i)])/
alpar@128
   909
// 	       (_nodeSizes[g.source(*i)]+_nodeSizes[g.target(*i)]));
alpar@128
   910
alpar@128
   911
 	  m=dim2::Point<double>(mycoords[g.source(*i)])+
alpar@128
   912
	    d*(l+_nodeSizes[g.source(*i)]-_nodeSizes[g.target(*i)])/2.0;
alpar@128
   913
alpar@128
   914
	  for(typename std::vector<Arc>::iterator e=i;e!=j;++e) {
alpar@128
   915
	    sw+=_arcWidths[*e]*_arcWidthScale/2.0;
alpar@128
   916
	    dim2::Point<double> mm=m+rot90(d)*sw/.75;
alpar@128
   917
	    if(_drawArrows) {
alpar@128
   918
	      int node_shape;
alpar@128
   919
	      dim2::Point<double> s=mycoords[g.source(*e)];
alpar@128
   920
	      dim2::Point<double> t=mycoords[g.target(*e)];
alpar@128
   921
	      double rn=_nodeSizes[g.target(*e)]*_nodeScale;
alpar@128
   922
	      node_shape=_nodeShapes[g.target(*e)];
alpar@128
   923
	      dim2::Bezier3 bez(s,mm,mm,t);
alpar@128
   924
	      double t1=0,t2=1;
alpar@128
   925
	      for(int ii=0;ii<INTERPOL_PREC;++ii)
alpar@128
   926
		if(isInsideNode(bez((t1+t2)/2)-t,rn,node_shape)) t2=(t1+t2)/2;
alpar@128
   927
		else t1=(t1+t2)/2;
alpar@128
   928
	      dim2::Point<double> apoint=bez((t1+t2)/2);
alpar@128
   929
	      rn = _arrowLength+_arcWidths[*e]*_arcWidthScale;
alpar@128
   930
	      rn*=rn;
alpar@128
   931
	      t2=(t1+t2)/2;t1=0;
alpar@128
   932
	      for(int ii=0;ii<INTERPOL_PREC;++ii)
alpar@128
   933
		if((bez((t1+t2)/2)-apoint).normSquare()>rn) t1=(t1+t2)/2;
alpar@128
   934
		else t2=(t1+t2)/2;
alpar@128
   935
	      dim2::Point<double> linend=bez((t1+t2)/2);	      
alpar@128
   936
	      bez=bez.before((t1+t2)/2);
alpar@128
   937
// 	      rn=_nodeSizes[g.source(*e)]*_nodeScale;
alpar@128
   938
// 	      node_shape=_nodeShapes[g.source(*e)];
alpar@128
   939
// 	      t1=0;t2=1;
alpar@128
   940
// 	      for(int i=0;i<INTERPOL_PREC;++i)
alpar@128
   941
// 		if(isInsideNode(bez((t1+t2)/2)-t,rn,node_shape)) t1=(t1+t2)/2;
alpar@128
   942
// 		else t2=(t1+t2)/2;
alpar@128
   943
// 	      bez=bez.after((t1+t2)/2);
alpar@128
   944
	      os << _arcWidths[*e]*_arcWidthScale << " setlinewidth "
alpar@128
   945
		 << _arcColors[*e].red() << ' '
alpar@128
   946
		 << _arcColors[*e].green() << ' '
alpar@128
   947
		 << _arcColors[*e].blue() << " setrgbcolor newpath\n"
alpar@128
   948
		 << bez.p1.x << ' ' <<  bez.p1.y << " moveto\n"
alpar@128
   949
		 << bez.p2.x << ' ' << bez.p2.y << ' '
alpar@128
   950
		 << bez.p3.x << ' ' << bez.p3.y << ' '
alpar@128
   951
		 << bez.p4.x << ' ' << bez.p4.y << " curveto stroke\n";
alpar@128
   952
	      dim2::Point<double> dd(rot90(linend-apoint));
alpar@128
   953
	      dd*=(.5*_arcWidths[*e]*_arcWidthScale+_arrowWidth)/
alpar@128
   954
		std::sqrt(dd.normSquare());
alpar@128
   955
	      os << "newpath " << psOut(apoint) << " moveto "
alpar@128
   956
		 << psOut(linend+dd) << " lineto "
alpar@128
   957
		 << psOut(linend-dd) << " lineto closepath fill\n";
alpar@128
   958
	    }
alpar@128
   959
	    else {
alpar@128
   960
	      os << mycoords[g.source(*e)].x << ' '
alpar@128
   961
		 << mycoords[g.source(*e)].y << ' '
alpar@128
   962
		 << mm.x << ' ' << mm.y << ' '
alpar@128
   963
		 << mycoords[g.target(*e)].x << ' '
alpar@128
   964
		 << mycoords[g.target(*e)].y << ' '
alpar@128
   965
		 << _arcColors[*e].red() << ' '
alpar@128
   966
		 << _arcColors[*e].green() << ' '
alpar@128
   967
		 << _arcColors[*e].blue() << ' '
alpar@128
   968
		 << _arcWidths[*e]*_arcWidthScale << " lb\n";
alpar@128
   969
	    }
alpar@128
   970
	    sw+=_arcWidths[*e]*_arcWidthScale/2.0+_parArcDist;
alpar@128
   971
	  }
alpar@128
   972
	}
alpar@128
   973
      }
alpar@128
   974
      else for(ArcIt e(g);e!=INVALID;++e)
alpar@128
   975
	if((!_undirected||g.source(e)<g.target(e))&&_arcWidths[e]>0
alpar@184
   976
	   &&g.source(e)!=g.target(e)) {
alpar@128
   977
	  if(_drawArrows) {
alpar@128
   978
	    dim2::Point<double> d(mycoords[g.target(e)]-mycoords[g.source(e)]);
alpar@128
   979
	    double rn=_nodeSizes[g.target(e)]*_nodeScale;
alpar@128
   980
	    int node_shape=_nodeShapes[g.target(e)];
alpar@128
   981
	    double t1=0,t2=1;
alpar@128
   982
	    for(int i=0;i<INTERPOL_PREC;++i)
alpar@128
   983
	      if(isInsideNode((-(t1+t2)/2)*d,rn,node_shape)) t1=(t1+t2)/2;
alpar@128
   984
	      else t2=(t1+t2)/2;
alpar@128
   985
	    double l=std::sqrt(d.normSquare());
alpar@128
   986
	    d/=l;
alpar@128
   987
	    
alpar@128
   988
	    os << l*(1-(t1+t2)/2) << ' '
alpar@128
   989
	       << _arcWidths[e]*_arcWidthScale << ' '
alpar@128
   990
	       << d.x << ' ' << d.y << ' '
alpar@128
   991
	       << mycoords[g.source(e)].x << ' '
alpar@128
   992
	       << mycoords[g.source(e)].y << ' '
alpar@128
   993
	       << _arcColors[e].red() << ' '
alpar@128
   994
	       << _arcColors[e].green() << ' '
alpar@128
   995
	       << _arcColors[e].blue() << " arr\n";
alpar@184
   996
	  } 
alpar@128
   997
	  else os << mycoords[g.source(e)].x << ' '
alpar@128
   998
		  << mycoords[g.source(e)].y << ' '
alpar@128
   999
		  << mycoords[g.target(e)].x << ' '
alpar@128
  1000
		  << mycoords[g.target(e)].y << ' '
alpar@128
  1001
		  << _arcColors[e].red() << ' '
alpar@128
  1002
		  << _arcColors[e].green() << ' '
alpar@128
  1003
		  << _arcColors[e].blue() << ' '
alpar@128
  1004
		  << _arcWidths[e]*_arcWidthScale << " l\n";
alpar@184
  1005
	}
alpar@128
  1006
      os << "grestore\n";
alpar@128
  1007
    }
alpar@128
  1008
    if(_showNodes) {
alpar@128
  1009
      os << "%Nodes:\ngsave\n";
alpar@128
  1010
      for(NodeIt n(g);n!=INVALID;++n) {
alpar@128
  1011
	os << mycoords[n].x << ' ' << mycoords[n].y << ' '
alpar@128
  1012
	   << _nodeSizes[n]*_nodeScale << ' '
alpar@128
  1013
	   << _nodeColors[n].red() << ' '
alpar@128
  1014
	   << _nodeColors[n].green() << ' '
alpar@128
  1015
	   << _nodeColors[n].blue() << ' ';
alpar@128
  1016
	switch(_nodeShapes[n]) {
alpar@128
  1017
	case CIRCLE:
alpar@128
  1018
	  os<< "nc";break;
alpar@128
  1019
	case SQUARE:
alpar@128
  1020
	  os<< "nsq";break;
alpar@128
  1021
	case DIAMOND:
alpar@128
  1022
	  os<< "ndi";break;
alpar@128
  1023
	case MALE:
alpar@128
  1024
	  os<< "nmale";break;
alpar@128
  1025
	case FEMALE:
alpar@128
  1026
	  os<< "nfemale";break;
alpar@128
  1027
	}
alpar@128
  1028
	os<<'\n';
alpar@128
  1029
      }
alpar@128
  1030
      os << "grestore\n";
alpar@128
  1031
    }
alpar@128
  1032
    if(_showNodeText) {
alpar@128
  1033
      os << "%Node texts:\ngsave\n";
alpar@128
  1034
      os << "/fosi " << _nodeTextSize << " def\n";
alpar@128
  1035
      os << "(Helvetica) findfont fosi scalefont setfont\n";
alpar@128
  1036
      for(NodeIt n(g);n!=INVALID;++n) {
alpar@128
  1037
	switch(_nodeTextColorType) {
alpar@128
  1038
	case DIST_COL:
alpar@128
  1039
	  os << psOut(distantColor(_nodeColors[n])) << " setrgbcolor\n";
alpar@128
  1040
	  break;
alpar@128
  1041
	case DIST_BW:
alpar@128
  1042
	  os << psOut(distantBW(_nodeColors[n])) << " setrgbcolor\n";
alpar@128
  1043
	  break;
alpar@128
  1044
	case CUST_COL:
alpar@128
  1045
	  os << psOut(distantColor(_nodeTextColors[n])) << " setrgbcolor\n";
alpar@128
  1046
	  break;
alpar@128
  1047
	default:
alpar@128
  1048
	  os << "0 0 0 setrgbcolor\n";
alpar@128
  1049
	}
alpar@128
  1050
	os << mycoords[n].x << ' ' << mycoords[n].y
alpar@128
  1051
	   << " (" << _nodeTexts[n] << ") cshow\n";
alpar@128
  1052
      }
alpar@128
  1053
      os << "grestore\n";
alpar@128
  1054
    }
alpar@128
  1055
    if(_showNodePsText) {
alpar@128
  1056
      os << "%Node PS blocks:\ngsave\n";
alpar@128
  1057
      for(NodeIt n(g);n!=INVALID;++n)
alpar@128
  1058
	os << mycoords[n].x << ' ' << mycoords[n].y
alpar@128
  1059
	   << " moveto\n" << _nodePsTexts[n] << "\n";
alpar@128
  1060
      os << "grestore\n";
alpar@128
  1061
    }
alpar@128
  1062
    
alpar@128
  1063
    os << "grestore\nshowpage\n";
alpar@128
  1064
alpar@128
  1065
    //CleanUp:
alpar@128
  1066
    if(_pleaseRemoveOsStream) {delete &os;}
alpar@130
  1067
  }
alpar@130
  1068
alpar@130
  1069
  ///\name Aliases
alpar@130
  1070
  ///These are just some aliases to other parameter setting functions.
alpar@130
  1071
alpar@130
  1072
  ///@{
alpar@130
  1073
alpar@130
  1074
  ///An alias for arcWidths()
alpar@130
  1075
  template<class X> GraphToEps<ArcWidthsTraits<X> > edgeWidths(const X &x)
alpar@130
  1076
  {
alpar@130
  1077
    return arcWidths(x);
alpar@130
  1078
  }
alpar@130
  1079
alpar@130
  1080
  ///An alias for arcColors()
alpar@130
  1081
  template<class X> GraphToEps<ArcColorsTraits<X> >
alpar@130
  1082
  edgeColors(const X &x)
alpar@130
  1083
  {
alpar@130
  1084
    return arcColors(x);
alpar@130
  1085
  }
alpar@130
  1086
alpar@130
  1087
  ///An alias for arcWidthScale()
alpar@130
  1088
  GraphToEps<T> &edgeWidthScale(double d) {return arcWidthScale(d);}
alpar@130
  1089
alpar@130
  1090
  ///An alias for autoArcWidthScale()
alpar@130
  1091
  GraphToEps<T> &autoEdgeWidthScale(bool b=true)
alpar@130
  1092
  {
alpar@130
  1093
    return autoArcWidthScale(b);
alpar@130
  1094
  }
alpar@130
  1095
  
alpar@130
  1096
  ///An alias for absoluteArcWidths()
alpar@130
  1097
  GraphToEps<T> &absoluteEdgeWidths(bool b=true)
alpar@130
  1098
  {
alpar@130
  1099
    return absoluteArcWidths(b);
alpar@130
  1100
  }
alpar@130
  1101
  
alpar@130
  1102
  ///An alias for parArcDist()
alpar@130
  1103
  GraphToEps<T> &parEdgeDist(double d) {return parArcDist(d);}
alpar@130
  1104
  
alpar@130
  1105
  ///An alias for hideArcs()
alpar@130
  1106
  GraphToEps<T> &hideEdges(bool b=true) {return hideArcs(b);}
alpar@130
  1107
alpar@130
  1108
  ///@}
alpar@128
  1109
};
alpar@128
  1110
alpar@128
  1111
template<class T>
alpar@128
  1112
const int GraphToEps<T>::INTERPOL_PREC = 20;
alpar@128
  1113
template<class T>
alpar@128
  1114
const double GraphToEps<T>::A4HEIGHT = 841.8897637795276;
alpar@128
  1115
template<class T>
alpar@128
  1116
const double GraphToEps<T>::A4WIDTH  = 595.275590551181;
alpar@128
  1117
template<class T>
alpar@128
  1118
const double GraphToEps<T>::A4BORDER = 15;
alpar@128
  1119
alpar@128
  1120
alpar@128
  1121
///Generates an EPS file from a graph
alpar@128
  1122
alpar@128
  1123
///\ingroup eps_io
alpar@128
  1124
///Generates an EPS file from a graph.
kpeter@206
  1125
///\param g Reference to the graph to be printed.
kpeter@206
  1126
///\param os Reference to the output stream.
kpeter@206
  1127
///By default it is <tt>std::cout</tt>.
alpar@128
  1128
///
alpar@128
  1129
///This function also has a lot of
alpar@128
  1130
///\ref named-templ-func-param "named parameters",
alpar@128
  1131
///they are declared as the members of class \ref GraphToEps. The following
alpar@128
  1132
///example shows how to use these parameters.
alpar@128
  1133
///\code
alpar@128
  1134
/// graphToEps(g,os).scale(10).coords(coords)
alpar@128
  1135
///              .nodeScale(2).nodeSizes(sizes)
alpar@128
  1136
///              .arcWidthScale(.4).run();
alpar@128
  1137
///\endcode
kpeter@206
  1138
///
kpeter@206
  1139
///For more detailed examples see the \ref graph_to_eps_demo.cc demo file.
kpeter@206
  1140
///
alpar@128
  1141
///\warning Don't forget to put the \ref GraphToEps::run() "run()"
alpar@128
  1142
///to the end of the parameter list.
alpar@128
  1143
///\sa GraphToEps
alpar@128
  1144
///\sa graphToEps(G &g, const char *file_name)
alpar@128
  1145
template<class G>
alpar@128
  1146
GraphToEps<DefaultGraphToEpsTraits<G> > 
alpar@128
  1147
graphToEps(G &g, std::ostream& os=std::cout)
alpar@128
  1148
{
alpar@128
  1149
  return 
alpar@128
  1150
    GraphToEps<DefaultGraphToEpsTraits<G> >(DefaultGraphToEpsTraits<G>(g,os));
alpar@128
  1151
}
alpar@128
  1152
 
alpar@128
  1153
///Generates an EPS file from a graph
alpar@128
  1154
alpar@128
  1155
///\ingroup eps_io
alpar@128
  1156
///This function does the same as
alpar@128
  1157
///\ref graphToEps(G &g,std::ostream& os)
alpar@128
  1158
///but it writes its output into the file \c file_name
alpar@128
  1159
///instead of a stream.
alpar@128
  1160
///\sa graphToEps(G &g, std::ostream& os)
alpar@128
  1161
template<class G>
alpar@128
  1162
GraphToEps<DefaultGraphToEpsTraits<G> > 
alpar@128
  1163
graphToEps(G &g,const char *file_name)
alpar@128
  1164
{
alpar@128
  1165
  return GraphToEps<DefaultGraphToEpsTraits<G> >
alpar@128
  1166
    (DefaultGraphToEpsTraits<G>(g,*new std::ofstream(file_name),true));
alpar@128
  1167
}
alpar@128
  1168
alpar@128
  1169
///Generates an EPS file from a graph
alpar@128
  1170
alpar@128
  1171
///\ingroup eps_io
alpar@128
  1172
///This function does the same as
alpar@128
  1173
///\ref graphToEps(G &g,std::ostream& os)
alpar@128
  1174
///but it writes its output into the file \c file_name
alpar@128
  1175
///instead of a stream.
alpar@128
  1176
///\sa graphToEps(G &g, std::ostream& os)
alpar@128
  1177
template<class G>
alpar@128
  1178
GraphToEps<DefaultGraphToEpsTraits<G> > 
alpar@128
  1179
graphToEps(G &g,const std::string& file_name)
alpar@128
  1180
{
alpar@128
  1181
  return GraphToEps<DefaultGraphToEpsTraits<G> >
alpar@128
  1182
    (DefaultGraphToEpsTraits<G>(g,*new std::ofstream(file_name.c_str()),true));
alpar@128
  1183
}
alpar@128
  1184
alpar@128
  1185
} //END OF NAMESPACE LEMON
alpar@128
  1186
alpar@128
  1187
#endif // LEMON_GRAPH_TO_EPS_H