lemon-1.1: lemon/graph_to_eps.h@660db48f324f

     1 /* -*- mode: C++; indent-tabs-mode: nil; -*-

     2  *

     3  * This file is a part of LEMON, a generic C++ optimization library.

     4  *

     5  * Copyright (C) 2003-2008

     6  * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

     7  * (Egervary Research Group on Combinatorial Optimization, EGRES).

     8  *

     9  * Permission to use, modify and distribute this software is granted

    10  * provided that this copyright notice appears in all copies. For

    11  * precise terms see the accompanying LICENSE file.

    12  *

    13  * This software is provided "AS IS" with no warranty of any kind,

    14  * express or implied, and with no claim as to its suitability for any

    15  * purpose.

    16  *

    17  */

    19 #ifndef LEMON_GRAPH_TO_EPS_H

    20 #define LEMON_GRAPH_TO_EPS_H

    22 #include<iostream>

    23 #include<fstream>

    24 #include<sstream>

    25 #include<algorithm>

    26 #include<vector>

    28 #ifndef WIN32

    29 #include<sys/time.h>

    30 #include<ctime>

    31 #else

    32 #define WIN32_LEAN_AND_MEAN

    33 #define NOMINMAX

    34 #include<windows.h>

    35 #endif

    37 #include<lemon/math.h>

    38 #include<lemon/core.h>

    39 #include<lemon/dim2.h>

    40 #include<lemon/maps.h>

    41 #include<lemon/color.h>

    42 #include<lemon/bits/bezier.h>

    43 #include<lemon/error.h>

    46 ///\ingroup eps_io

    47 ///\file

    48 ///\brief A well configurable tool for visualizing graphs

    50 namespace lemon {

    52   namespace _graph_to_eps_bits {

    53     template<class MT>

    54     class _NegY {

    55     public:

    56       typedef typename MT::Key Key;

    57       typedef typename MT::Value Value;

    58       const MT &map;

    59       int yscale;

    60       _NegY(const MT &m,bool b) : map(m), yscale(1-b*2) {}

    61       Value operator[](Key n) { return Value(map[n].x,map[n].y*yscale);}

    62     };

    63   }

    65 ///Default traits class of GraphToEps

    67 ///Default traits class of \ref GraphToEps.

    68 ///

    69 ///\c G is the type of the underlying graph.

    70 template<class G>

    71 struct DefaultGraphToEpsTraits

    72 {

    73   typedef G Graph;

    74   typedef typename Graph::Node Node;

    75   typedef typename Graph::NodeIt NodeIt;

    76   typedef typename Graph::Arc Arc;

    77   typedef typename Graph::ArcIt ArcIt;

    78   typedef typename Graph::InArcIt InArcIt;

    79   typedef typename Graph::OutArcIt OutArcIt;

    82   const Graph &g;

    84   std::ostream& os;

    86   typedef ConstMap<typename Graph::Node,dim2::Point<double> > CoordsMapType;

    87   CoordsMapType _coords;

    88   ConstMap<typename Graph::Node,double > _nodeSizes;

    89   ConstMap<typename Graph::Node,int > _nodeShapes;

    91   ConstMap<typename Graph::Node,Color > _nodeColors;

    92   ConstMap<typename Graph::Arc,Color > _arcColors;

    94   ConstMap<typename Graph::Arc,double > _arcWidths;

    96   double _arcWidthScale;

    98   double _nodeScale;

    99   double _xBorder, _yBorder;

   100   double _scale;

   101   double _nodeBorderQuotient;

   103   bool _drawArrows;

   104   double _arrowLength, _arrowWidth;

   106   bool _showNodes, _showArcs;

   108   bool _enableParallel;

   109   double _parArcDist;

   111   bool _showNodeText;

   112   ConstMap<typename Graph::Node,bool > _nodeTexts;

   113   double _nodeTextSize;

   115   bool _showNodePsText;

   116   ConstMap<typename Graph::Node,bool > _nodePsTexts;

   117   char *_nodePsTextsPreamble;

   119   bool _undirected;

   121   bool _pleaseRemoveOsStream;

   123   bool _scaleToA4;

   125   std::string _title;

   126   std::string _copyright;

   128   enum NodeTextColorType

   129     { DIST_COL=0, DIST_BW=1, CUST_COL=2, SAME_COL=3 } _nodeTextColorType;

   130   ConstMap<typename Graph::Node,Color > _nodeTextColors;

   132   bool _autoNodeScale;

   133   bool _autoArcWidthScale;

   135   bool _absoluteNodeSizes;

   136   bool _absoluteArcWidths;

   138   bool _negY;

   140   bool _preScale;

   141   ///Constructor

   143   ///Constructor

   144   ///\param _g  Reference to the graph to be printed.

   145   ///\param _os Reference to the output stream.

   146   ///\param _os Reference to the output stream.

   147   ///By default it is <tt>std::cout</tt>.

   148   ///\param _pros If it is \c true, then the \c ostream referenced by \c _os

   149   ///will be explicitly deallocated by the destructor.

   150   DefaultGraphToEpsTraits(const G &_g,std::ostream& _os=std::cout,

   151                           bool _pros=false) :

   152     g(_g), os(_os),

   153     _coords(dim2::Point<double>(1,1)), _nodeSizes(1), _nodeShapes(0),

   154     _nodeColors(WHITE), _arcColors(BLACK),

   155     _arcWidths(1.0), _arcWidthScale(0.003),

   156     _nodeScale(.01), _xBorder(10), _yBorder(10), _scale(1.0),

   157     _nodeBorderQuotient(.1),

   158     _drawArrows(false), _arrowLength(1), _arrowWidth(0.3),

   159     _showNodes(true), _showArcs(true),

   160     _enableParallel(false), _parArcDist(1),

   161     _showNodeText(false), _nodeTexts(false), _nodeTextSize(1),

   162     _showNodePsText(false), _nodePsTexts(false), _nodePsTextsPreamble(0),

   163     _undirected(lemon::UndirectedTagIndicator<G>::value),

   164     _pleaseRemoveOsStream(_pros), _scaleToA4(false),

   165     _nodeTextColorType(SAME_COL), _nodeTextColors(BLACK),

   166     _autoNodeScale(false),

   167     _autoArcWidthScale(false),

   168     _absoluteNodeSizes(false),

   169     _absoluteArcWidths(false),

   170     _negY(false),

   171     _preScale(true)

   172   {}

   173 };

   175 ///Auxiliary class to implement the named parameters of \ref graphToEps()

   177 ///Auxiliary class to implement the named parameters of \ref graphToEps().

   178 ///

   179 ///For detailed examples see the \ref graph_to_eps_demo.cc demo file.

   180 template<class T> class GraphToEps : public T

   181 {

   182   // Can't believe it is required by the C++ standard

   183   using T::g;

   184   using T::os;

   186   using T::_coords;

   187   using T::_nodeSizes;

   188   using T::_nodeShapes;

   189   using T::_nodeColors;

   190   using T::_arcColors;

   191   using T::_arcWidths;

   193   using T::_arcWidthScale;

   194   using T::_nodeScale;

   195   using T::_xBorder;

   196   using T::_yBorder;

   197   using T::_scale;

   198   using T::_nodeBorderQuotient;

   200   using T::_drawArrows;

   201   using T::_arrowLength;

   202   using T::_arrowWidth;

   204   using T::_showNodes;

   205   using T::_showArcs;

   207   using T::_enableParallel;

   208   using T::_parArcDist;

   210   using T::_showNodeText;

   211   using T::_nodeTexts;

   212   using T::_nodeTextSize;

   214   using T::_showNodePsText;

   215   using T::_nodePsTexts;

   216   using T::_nodePsTextsPreamble;

   218   using T::_undirected;

   220   using T::_pleaseRemoveOsStream;

   222   using T::_scaleToA4;

   224   using T::_title;

   225   using T::_copyright;

   227   using T::NodeTextColorType;

   228   using T::CUST_COL;

   229   using T::DIST_COL;

   230   using T::DIST_BW;

   231   using T::_nodeTextColorType;

   232   using T::_nodeTextColors;

   234   using T::_autoNodeScale;

   235   using T::_autoArcWidthScale;

   237   using T::_absoluteNodeSizes;

   238   using T::_absoluteArcWidths;

   241   using T::_negY;

   242   using T::_preScale;

   244   // dradnats ++C eht yb deriuqer si ti eveileb t'naC

   246   typedef typename T::Graph Graph;

   247   typedef typename Graph::Node Node;

   248   typedef typename Graph::NodeIt NodeIt;

   249   typedef typename Graph::Arc Arc;

   250   typedef typename Graph::ArcIt ArcIt;

   251   typedef typename Graph::InArcIt InArcIt;

   252   typedef typename Graph::OutArcIt OutArcIt;

   254   static const int INTERPOL_PREC;

   255   static const double A4HEIGHT;

   256   static const double A4WIDTH;

   257   static const double A4BORDER;

   259   bool dontPrint;

   261 public:

   262   ///Node shapes

   264   ///Node shapes.

   265   ///

   266   enum NodeShapes {

   267     /// = 0

   268     ///\image html nodeshape_0.png

   269     ///\image latex nodeshape_0.eps "CIRCLE shape (0)" width=2cm

   270     CIRCLE=0,

   271     /// = 1

   272     ///\image html nodeshape_1.png

   273     ///\image latex nodeshape_1.eps "SQUARE shape (1)" width=2cm

   274     ///

   275     SQUARE=1,

   276     /// = 2

   277     ///\image html nodeshape_2.png

   278     ///\image latex nodeshape_2.eps "DIAMOND shape (2)" width=2cm

   279     ///

   280     DIAMOND=2,

   281     /// = 3

   282     ///\image html nodeshape_3.png

   283     ///\image latex nodeshape_2.eps "MALE shape (4)" width=2cm

   284     ///

   285     MALE=3,

   286     /// = 4

   287     ///\image html nodeshape_4.png

   288     ///\image latex nodeshape_2.eps "FEMALE shape (4)" width=2cm

   289     ///

   290     FEMALE=4

   291   };

   293 private:

   294   class arcLess {

   295     const Graph &g;

   296   public:

   297     arcLess(const Graph &_g) : g(_g) {}

   298     bool operator()(Arc a,Arc b) const

   299     {

   300       Node ai=std::min(g.source(a),g.target(a));

   301       Node aa=std::max(g.source(a),g.target(a));

   302       Node bi=std::min(g.source(b),g.target(b));

   303       Node ba=std::max(g.source(b),g.target(b));

   304       return ai<bi ||

   305         (ai==bi && (aa < ba ||

   306                     (aa==ba && ai==g.source(a) && bi==g.target(b))));

   307     }

   308   };

   309   bool isParallel(Arc e,Arc f) const

   310   {

   311     return (g.source(e)==g.source(f)&&

   312             g.target(e)==g.target(f)) ||

   313       (g.source(e)==g.target(f)&&

   314        g.target(e)==g.source(f));

   315   }

   316   template<class TT>

   317   static std::string psOut(const dim2::Point<TT> &p)

   318     {

   319       std::ostringstream os;

   320       os << p.x << ' ' << p.y;

   321       return os.str();

   322     }

   323   static std::string psOut(const Color &c)

   324     {

   325       std::ostringstream os;

   326       os << c.red() << ' ' << c.green() << ' ' << c.blue();

   327       return os.str();

   328     }

   330 public:

   331   GraphToEps(const T &t) : T(t), dontPrint(false) {};

   333   template<class X> struct CoordsTraits : public T {

   334   typedef X CoordsMapType;

   335     const X &_coords;

   336     CoordsTraits(const T &t,const X &x) : T(t), _coords(x) {}

   337   };

   338   ///Sets the map of the node coordinates

   340   ///Sets the map of the node coordinates.

   341   ///\param x must be a node map with \ref dim2::Point "dim2::Point<double>" or

   342   ///\ref dim2::Point "dim2::Point<int>" values.

   343   template<class X> GraphToEps<CoordsTraits<X> > coords(const X &x) {

   344     dontPrint=true;

   345     return GraphToEps<CoordsTraits<X> >(CoordsTraits<X>(*this,x));

   346   }

   347   template<class X> struct NodeSizesTraits : public T {

   348     const X &_nodeSizes;

   349     NodeSizesTraits(const T &t,const X &x) : T(t), _nodeSizes(x) {}

   350   };

   351   ///Sets the map of the node sizes

   353   ///Sets the map of the node sizes.

   354   ///\param x must be a node map with \c double (or convertible) values.

   355   template<class X> GraphToEps<NodeSizesTraits<X> > nodeSizes(const X &x)

   356   {

   357     dontPrint=true;

   358     return GraphToEps<NodeSizesTraits<X> >(NodeSizesTraits<X>(*this,x));

   359   }

   360   template<class X> struct NodeShapesTraits : public T {

   361     const X &_nodeShapes;

   362     NodeShapesTraits(const T &t,const X &x) : T(t), _nodeShapes(x) {}

   363   };

   364   ///Sets the map of the node shapes

   366   ///Sets the map of the node shapes.

   367   ///The available shape values

   368   ///can be found in \ref NodeShapes "enum NodeShapes".

   369   ///\param x must be a node map with \c int (or convertible) values.

   370   ///\sa NodeShapes

   371   template<class X> GraphToEps<NodeShapesTraits<X> > nodeShapes(const X &x)

   372   {

   373     dontPrint=true;

   374     return GraphToEps<NodeShapesTraits<X> >(NodeShapesTraits<X>(*this,x));

   375   }

   376   template<class X> struct NodeTextsTraits : public T {

   377     const X &_nodeTexts;

   378     NodeTextsTraits(const T &t,const X &x) : T(t), _nodeTexts(x) {}

   379   };

   380   ///Sets the text printed on the nodes

   382   ///Sets the text printed on the nodes.

   383   ///\param x must be a node map with type that can be pushed to a standard

   384   ///\c ostream.

   385   template<class X> GraphToEps<NodeTextsTraits<X> > nodeTexts(const X &x)

   386   {

   387     dontPrint=true;

   388     _showNodeText=true;

   389     return GraphToEps<NodeTextsTraits<X> >(NodeTextsTraits<X>(*this,x));

   390   }

   391   template<class X> struct NodePsTextsTraits : public T {

   392     const X &_nodePsTexts;

   393     NodePsTextsTraits(const T &t,const X &x) : T(t), _nodePsTexts(x) {}

   394   };

   395   ///Inserts a PostScript block to the nodes

   397   ///With this command it is possible to insert a verbatim PostScript

   398   ///block to the nodes.

   399   ///The PS current point will be moved to the center of the node before

   400   ///the PostScript block inserted.

   401   ///

   402   ///Before and after the block a newline character is inserted so you

   403   ///don't have to bother with the separators.

   404   ///

   405   ///\param x must be a node map with type that can be pushed to a standard

   406   ///\c ostream.

   407   ///

   408   ///\sa nodePsTextsPreamble()

   409   template<class X> GraphToEps<NodePsTextsTraits<X> > nodePsTexts(const X &x)

   410   {

   411     dontPrint=true;

   412     _showNodePsText=true;

   413     return GraphToEps<NodePsTextsTraits<X> >(NodePsTextsTraits<X>(*this,x));

   414   }

   415   template<class X> struct ArcWidthsTraits : public T {

   416     const X &_arcWidths;

   417     ArcWidthsTraits(const T &t,const X &x) : T(t), _arcWidths(x) {}

   418   };

   419   ///Sets the map of the arc widths

   421   ///Sets the map of the arc widths.

   422   ///\param x must be an arc map with \c double (or convertible) values.

   423   template<class X> GraphToEps<ArcWidthsTraits<X> > arcWidths(const X &x)

   424   {

   425     dontPrint=true;

   426     return GraphToEps<ArcWidthsTraits<X> >(ArcWidthsTraits<X>(*this,x));

   427   }

   429   template<class X> struct NodeColorsTraits : public T {

   430     const X &_nodeColors;

   431     NodeColorsTraits(const T &t,const X &x) : T(t), _nodeColors(x) {}

   432   };

   433   ///Sets the map of the node colors

   435   ///Sets the map of the node colors.

   436   ///\param x must be a node map with \ref Color values.

   437   ///

   438   ///\sa Palette

   439   template<class X> GraphToEps<NodeColorsTraits<X> >

   440   nodeColors(const X &x)

   441   {

   442     dontPrint=true;

   443     return GraphToEps<NodeColorsTraits<X> >(NodeColorsTraits<X>(*this,x));

   444   }

   445   template<class X> struct NodeTextColorsTraits : public T {

   446     const X &_nodeTextColors;

   447     NodeTextColorsTraits(const T &t,const X &x) : T(t), _nodeTextColors(x) {}

   448   };

   449   ///Sets the map of the node text colors

   451   ///Sets the map of the node text colors.

   452   ///\param x must be a node map with \ref Color values.

   453   ///

   454   ///\sa Palette

   455   template<class X> GraphToEps<NodeTextColorsTraits<X> >

   456   nodeTextColors(const X &x)

   457   {

   458     dontPrint=true;

   459     _nodeTextColorType=CUST_COL;

   460     return GraphToEps<NodeTextColorsTraits<X> >

   461       (NodeTextColorsTraits<X>(*this,x));

   462   }

   463   template<class X> struct ArcColorsTraits : public T {

   464     const X &_arcColors;

   465     ArcColorsTraits(const T &t,const X &x) : T(t), _arcColors(x) {}

   466   };

   467   ///Sets the map of the arc colors

   469   ///Sets the map of the arc colors.

   470   ///\param x must be an arc map with \ref Color values.

   471   ///

   472   ///\sa Palette

   473   template<class X> GraphToEps<ArcColorsTraits<X> >

   474   arcColors(const X &x)

   475   {

   476     dontPrint=true;

   477     return GraphToEps<ArcColorsTraits<X> >(ArcColorsTraits<X>(*this,x));

   478   }

   479   ///Sets a global scale factor for node sizes

   481   ///Sets a global scale factor for node sizes.

   482   ///

   483   /// If nodeSizes() is not given, this function simply sets the node

   484   /// sizes to \c d.  If nodeSizes() is given, but

   485   /// autoNodeScale() is not, then the node size given by

   486   /// nodeSizes() will be multiplied by the value \c d.

   487   /// If both nodeSizes() and autoNodeScale() are used, then the

   488   /// node sizes will be scaled in such a way that the greatest size will be

   489   /// equal to \c d.

   490   /// \sa nodeSizes()

   491   /// \sa autoNodeScale()

   492   GraphToEps<T> &nodeScale(double d=.01) {_nodeScale=d;return *this;}

   493   ///Turns on/off the automatic node size scaling.

   495   ///Turns on/off the automatic node size scaling.

   496   ///

   497   ///\sa nodeScale()

   498   ///

   499   GraphToEps<T> &autoNodeScale(bool b=true) {

   500     _autoNodeScale=b;return *this;

   501   }

   503   ///Turns on/off the absolutematic node size scaling.

   505   ///Turns on/off the absolutematic node size scaling.

   506   ///

   507   ///\sa nodeScale()

   508   ///

   509   GraphToEps<T> &absoluteNodeSizes(bool b=true) {

   510     _absoluteNodeSizes=b;return *this;

   511   }

   513   ///Negates the Y coordinates.

   514   GraphToEps<T> &negateY(bool b=true) {

   515     _negY=b;return *this;

   516   }

   518   ///Turn on/off pre-scaling

   520   ///By default graphToEps() rescales the whole image in order to avoid

   521   ///very big or very small bounding boxes.

   522   ///

   523   ///This (p)rescaling can be turned off with this function.

   524   ///

   525   GraphToEps<T> &preScale(bool b=true) {

   526     _preScale=b;return *this;

   527   }

   529   ///Sets a global scale factor for arc widths

   531   /// Sets a global scale factor for arc widths.

   532   ///

   533   /// If arcWidths() is not given, this function simply sets the arc

   534   /// widths to \c d.  If arcWidths() is given, but

   535   /// autoArcWidthScale() is not, then the arc withs given by

   536   /// arcWidths() will be multiplied by the value \c d.

   537   /// If both arcWidths() and autoArcWidthScale() are used, then the

   538   /// arc withs will be scaled in such a way that the greatest width will be

   539   /// equal to \c d.

   540   GraphToEps<T> &arcWidthScale(double d=.003) {_arcWidthScale=d;return *this;}

   541   ///Turns on/off the automatic arc width scaling.

   543   ///Turns on/off the automatic arc width scaling.

   544   ///

   545   ///\sa arcWidthScale()

   546   ///

   547   GraphToEps<T> &autoArcWidthScale(bool b=true) {

   548     _autoArcWidthScale=b;return *this;

   549   }

   550   ///Turns on/off the absolutematic arc width scaling.

   552   ///Turns on/off the absolutematic arc width scaling.

   553   ///

   554   ///\sa arcWidthScale()

   555   ///

   556   GraphToEps<T> &absoluteArcWidths(bool b=true) {

   557     _absoluteArcWidths=b;return *this;

   558   }

   559   ///Sets a global scale factor for the whole picture

   560   GraphToEps<T> &scale(double d) {_scale=d;return *this;}

   561   ///Sets the width of the border around the picture

   562   GraphToEps<T> &border(double b=10) {_xBorder=_yBorder=b;return *this;}

   563   ///Sets the width of the border around the picture

   564   GraphToEps<T> &border(double x, double y) {

   565     _xBorder=x;_yBorder=y;return *this;

   566   }

   567   ///Sets whether to draw arrows

   568   GraphToEps<T> &drawArrows(bool b=true) {_drawArrows=b;return *this;}

   569   ///Sets the length of the arrowheads

   570   GraphToEps<T> &arrowLength(double d=1.0) {_arrowLength*=d;return *this;}

   571   ///Sets the width of the arrowheads

   572   GraphToEps<T> &arrowWidth(double d=.3) {_arrowWidth*=d;return *this;}

   574   ///Scales the drawing to fit to A4 page

   575   GraphToEps<T> &scaleToA4() {_scaleToA4=true;return *this;}

   577   ///Enables parallel arcs

   578   GraphToEps<T> &enableParallel(bool b=true) {_enableParallel=b;return *this;}

   580   ///Sets the distance between parallel arcs

   581   GraphToEps<T> &parArcDist(double d) {_parArcDist*=d;return *this;}

   583   ///Hides the arcs

   584   GraphToEps<T> &hideArcs(bool b=true) {_showArcs=!b;return *this;}

   585   ///Hides the nodes

   586   GraphToEps<T> &hideNodes(bool b=true) {_showNodes=!b;return *this;}

   588   ///Sets the size of the node texts

   589   GraphToEps<T> &nodeTextSize(double d) {_nodeTextSize=d;return *this;}

   591   ///Sets the color of the node texts to be different from the node color

   593   ///Sets the color of the node texts to be as different from the node color

   594   ///as it is possible.

   595   GraphToEps<T> &distantColorNodeTexts()

   596   {_nodeTextColorType=DIST_COL;return *this;}

   597   ///Sets the color of the node texts to be black or white and always visible.

   599   ///Sets the color of the node texts to be black or white according to

   600   ///which is more different from the node color.

   601   GraphToEps<T> &distantBWNodeTexts()

   602   {_nodeTextColorType=DIST_BW;return *this;}

   604   ///Gives a preamble block for node Postscript block.

   606   ///Gives a preamble block for node Postscript block.

   607   ///

   608   ///\sa nodePsTexts()

   609   GraphToEps<T> & nodePsTextsPreamble(const char *str) {

   610     _nodePsTextsPreamble=str ;return *this;

   611   }

   612   ///Sets whether the graph is undirected

   614   ///Sets whether the graph is undirected.

   615   ///

   616   ///This setting is the default for undirected graphs.

   617   ///

   618   ///\sa directed()

   619    GraphToEps<T> &undirected(bool b=true) {_undirected=b;return *this;}

   621   ///Sets whether the graph is directed

   623   ///Sets whether the graph is directed.

   624   ///Use it to show the edges as a pair of directed ones.

   625   ///

   626   ///This setting is the default for digraphs.

   627   ///

   628   ///\sa undirected()

   629   GraphToEps<T> &directed(bool b=true) {_undirected=!b;return *this;}

   631   ///Sets the title.

   633   ///Sets the title of the generated image,

   634   ///namely it inserts a <tt>%%Title:</tt> DSC field to the header of

   635   ///the EPS file.

   636   GraphToEps<T> &title(const std::string &t) {_title=t;return *this;}

   637   ///Sets the copyright statement.

   639   ///Sets the copyright statement of the generated image,

   640   ///namely it inserts a <tt>%%Copyright:</tt> DSC field to the header of

   641   ///the EPS file.

   642   GraphToEps<T> &copyright(const std::string &t) {_copyright=t;return *this;}

   644 protected:

   645   bool isInsideNode(dim2::Point<double> p, double r,int t)

   646   {

   647     switch(t) {

   648     case CIRCLE:

   649     case MALE:

   650     case FEMALE:

   651       return p.normSquare()<=r*r;

   652     case SQUARE:

   653       return p.x<=r&&p.x>=-r&&p.y<=r&&p.y>=-r;

   654     case DIAMOND:

   655       return p.x+p.y<=r && p.x-p.y<=r && -p.x+p.y<=r && -p.x-p.y<=r;

   656     }

   657     return false;

   658   }

   660 public:

   661   ~GraphToEps() { }

   663   ///Draws the graph.

   665   ///Like other functions using

   666   ///\ref named-templ-func-param "named template parameters",

   667   ///this function calls the algorithm itself, i.e. in this case

   668   ///it draws the graph.

   669   void run() {

   670     const double EPSILON=1e-9;

   671     if(dontPrint) return;

   673     _graph_to_eps_bits::_NegY<typename T::CoordsMapType>

   674       mycoords(_coords,_negY);

   676     os << "%!PS-Adobe-2.0 EPSF-2.0\n";

   677     if(_title.size()>0) os << "%%Title: " << _title << '\n';

   678      if(_copyright.size()>0) os << "%%Copyright: " << _copyright << '\n';

   679     os << "%%Creator: LEMON, graphToEps()\n";

   681     {

   682 #ifndef WIN32

   683       timeval tv;

   684       gettimeofday(&tv, 0);

   686       char cbuf[26];

   687       ctime_r(&tv.tv_sec,cbuf);

   688       os << "%%CreationDate: " << cbuf;

   689 #else

   690       SYSTEMTIME time;

   691       char buf1[11], buf2[9], buf3[5];

   693       GetSystemTime(&time);

   694       if (GetDateFormat(LOCALE_USER_DEFAULT, 0, &time,

   695                         "ddd MMM dd", buf1, 11) &&

   696           GetTimeFormat(LOCALE_USER_DEFAULT, 0, &time,

   697                         "HH':'mm':'ss", buf2, 9) &&

   698           GetDateFormat(LOCALE_USER_DEFAULT, 0, &time,

   699                                 "yyyy", buf3, 5)) {

   700         os << "%%CreationDate: " << buf1 << ' '

   701            << buf2 << ' ' << buf3 << std::endl;

   702       }

   703 #endif

   704     }

   706     if (_autoArcWidthScale) {

   707       double max_w=0;

   708       for(ArcIt e(g);e!=INVALID;++e)

   709         max_w=std::max(double(_arcWidths[e]),max_w);

   710       if(max_w>EPSILON) {

   711         _arcWidthScale/=max_w;

   712       }

   713     }

   715     if (_autoNodeScale) {

   716       double max_s=0;

   717       for(NodeIt n(g);n!=INVALID;++n)

   718         max_s=std::max(double(_nodeSizes[n]),max_s);

   719       if(max_s>EPSILON) {

   720         _nodeScale/=max_s;

   721       }

   722     }

   724     double diag_len = 1;

   725     if(!(_absoluteNodeSizes&&_absoluteArcWidths)) {

   726       dim2::Box<double> bb;

   727       for(NodeIt n(g);n!=INVALID;++n) bb.add(mycoords[n]);

   728       if (bb.empty()) {

   729         bb = dim2::Box<double>(dim2::Point<double>(0,0));

   730       }

   731       diag_len = std::sqrt((bb.bottomLeft()-bb.topRight()).normSquare());

   732       if(diag_len<EPSILON) diag_len = 1;

   733       if(!_absoluteNodeSizes) _nodeScale*=diag_len;

   734       if(!_absoluteArcWidths) _arcWidthScale*=diag_len;

   735     }

   737     dim2::Box<double> bb;

   738     for(NodeIt n(g);n!=INVALID;++n) {

   739       double ns=_nodeSizes[n]*_nodeScale;

   740       dim2::Point<double> p(ns,ns);

   741       switch(_nodeShapes[n]) {

   742       case CIRCLE:

   743       case SQUARE:

   744       case DIAMOND:

   745         bb.add(p+mycoords[n]);

   746         bb.add(-p+mycoords[n]);

   747         break;

   748       case MALE:

   749         bb.add(-p+mycoords[n]);

   750         bb.add(dim2::Point<double>(1.5*ns,1.5*std::sqrt(3.0)*ns)+mycoords[n]);

   751         break;

   752       case FEMALE:

   753         bb.add(p+mycoords[n]);

   754         bb.add(dim2::Point<double>(-ns,-3.01*ns)+mycoords[n]);

   755         break;

   756       }

   757     }

   758     if (bb.empty()) {

   759       bb = dim2::Box<double>(dim2::Point<double>(0,0));

   760     }

   762     if(_scaleToA4)

   763       os <<"%%BoundingBox: 0 0 596 842\n%%DocumentPaperSizes: a4\n";

   764     else {

   765       if(_preScale) {

   766         //Rescale so that BoundingBox won't be neither to big nor too small.

   767         while(bb.height()*_scale>1000||bb.width()*_scale>1000) _scale/=10;

   768         while(bb.height()*_scale<100||bb.width()*_scale<100) _scale*=10;

   769       }

   771       os << "%%BoundingBox: "

   772          << int(floor(bb.left()   * _scale - _xBorder)) << ' '

   773          << int(floor(bb.bottom() * _scale - _yBorder)) << ' '

   774          << int(ceil(bb.right()  * _scale + _xBorder)) << ' '

   775          << int(ceil(bb.top()    * _scale + _yBorder)) << '\n';

   776     }

   778     os << "%%EndComments\n";

   780     //x1 y1 x2 y2 x3 y3 cr cg cb w

   781     os << "/lb { setlinewidth setrgbcolor newpath moveto\n"

   782        << "      4 2 roll 1 index 1 index curveto stroke } bind def\n";

   783     os << "/l { setlinewidth setrgbcolor newpath moveto lineto stroke }"

   784        << " bind def\n";

   785     //x y r

   786     os << "/c { newpath dup 3 index add 2 index moveto 0 360 arc closepath }"

   787        << " bind def\n";

   788     //x y r

   789     os << "/sq { newpath 2 index 1 index add 2 index 2 index add moveto\n"

   790        << "      2 index 1 index sub 2 index 2 index add lineto\n"

   791        << "      2 index 1 index sub 2 index 2 index sub lineto\n"

   792        << "      2 index 1 index add 2 index 2 index sub lineto\n"

   793        << "      closepath pop pop pop} bind def\n";

   794     //x y r

   795     os << "/di { newpath 2 index 1 index add 2 index moveto\n"

   796        << "      2 index             2 index 2 index add lineto\n"

   797        << "      2 index 1 index sub 2 index             lineto\n"

   798        << "      2 index             2 index 2 index sub lineto\n"

   799        << "      closepath pop pop pop} bind def\n";

   800     // x y r cr cg cb

   801     os << "/nc { 0 0 0 setrgbcolor 5 index 5 index 5 index c fill\n"

   802        << "     setrgbcolor " << 1+_nodeBorderQuotient << " div c fill\n"

   803        << "   } bind def\n";

   804     os << "/nsq { 0 0 0 setrgbcolor 5 index 5 index 5 index sq fill\n"

   805        << "     setrgbcolor " << 1+_nodeBorderQuotient << " div sq fill\n"

   806        << "   } bind def\n";

   807     os << "/ndi { 0 0 0 setrgbcolor 5 index 5 index 5 index di fill\n"

   808        << "     setrgbcolor " << 1+_nodeBorderQuotient << " div di fill\n"

   809        << "   } bind def\n";

   810     os << "/nfemale { 0 0 0 setrgbcolor 3 index "

   811        << _nodeBorderQuotient/(1+_nodeBorderQuotient)

   812        << " 1.5 mul mul setlinewidth\n"

   813        << "  newpath 5 index 5 index moveto "

   814        << "5 index 5 index 5 index 3.01 mul sub\n"

   815        << "  lineto 5 index 4 index .7 mul sub 5 index 5 index 2.2 mul sub"

   816        << " moveto\n"

   817        << "  5 index 4 index .7 mul add 5 index 5 index 2.2 mul sub lineto "

   818        << "stroke\n"

   819        << "  5 index 5 index 5 index c fill\n"

   820        << "  setrgbcolor " << 1+_nodeBorderQuotient << " div c fill\n"

   821        << "  } bind def\n";

   822     os << "/nmale {\n"

   823        << "  0 0 0 setrgbcolor 3 index "

   824        << _nodeBorderQuotient/(1+_nodeBorderQuotient)

   825        <<" 1.5 mul mul setlinewidth\n"

   826        << "  newpath 5 index 5 index moveto\n"

   827        << "  5 index 4 index 1 mul 1.5 mul add\n"

   828        << "  5 index 5 index 3 sqrt 1.5 mul mul add\n"

   829        << "  1 index 1 index lineto\n"

   830        << "  1 index 1 index 7 index sub moveto\n"

   831        << "  1 index 1 index lineto\n"

   832        << "  exch 5 index 3 sqrt .5 mul mul sub exch 5 index .5 mul sub"

   833        << " lineto\n"

   834        << "  stroke\n"

   835        << "  5 index 5 index 5 index c fill\n"

   836        << "  setrgbcolor " << 1+_nodeBorderQuotient << " div c fill\n"

   837        << "  } bind def\n";

   840     os << "/arrl " << _arrowLength << " def\n";

   841     os << "/arrw " << _arrowWidth << " def\n";

   842     // l dx_norm dy_norm

   843     os << "/lrl { 2 index mul exch 2 index mul exch rlineto pop} bind def\n";

   844     //len w dx_norm dy_norm x1 y1 cr cg cb

   845     os << "/arr { setrgbcolor /y1 exch def /x1 exch def /dy exch def /dx "

   846        << "exch def\n"

   847        << "       /w exch def /len exch def\n"

   848       //<< "0.1 setlinewidth x1 y1 moveto dx len mul dy len mul rlineto stroke"

   849        << "       newpath x1 dy w 2 div mul add y1 dx w 2 div mul sub moveto\n"

   850        << "       len w sub arrl sub dx dy lrl\n"

   851        << "       arrw dy dx neg lrl\n"

   852        << "       dx arrl w add mul dy w 2 div arrw add mul sub\n"

   853        << "       dy arrl w add mul dx w 2 div arrw add mul add rlineto\n"

   854        << "       dx arrl w add mul neg dy w 2 div arrw add mul sub\n"

   855        << "       dy arrl w add mul neg dx w 2 div arrw add mul add rlineto\n"

   856        << "       arrw dy dx neg lrl\n"

   857        << "       len w sub arrl sub neg dx dy lrl\n"

   858        << "       closepath fill } bind def\n";

   859     os << "/cshow { 2 index 2 index moveto dup stringwidth pop\n"

   860        << "         neg 2 div fosi .35 mul neg rmoveto show pop pop} def\n";

   862     os << "\ngsave\n";

   863     if(_scaleToA4)

   864       if(bb.height()>bb.width()) {

   865         double sc= std::min((A4HEIGHT-2*A4BORDER)/bb.height(),

   866                   (A4WIDTH-2*A4BORDER)/bb.width());

   867         os << ((A4WIDTH -2*A4BORDER)-sc*bb.width())/2 + A4BORDER << ' '

   868            << ((A4HEIGHT-2*A4BORDER)-sc*bb.height())/2 + A4BORDER

   869            << " translate\n"

   870            << sc << " dup scale\n"

   871            << -bb.left() << ' ' << -bb.bottom() << " translate\n";

   872       }

   873       else {

   874         double sc= std::min((A4HEIGHT-2*A4BORDER)/bb.width(),

   875                   (A4WIDTH-2*A4BORDER)/bb.height());

   876         os << ((A4WIDTH -2*A4BORDER)-sc*bb.height())/2 + A4BORDER << ' '

   877            << ((A4HEIGHT-2*A4BORDER)-sc*bb.width())/2 + A4BORDER

   878            << " translate\n"

   879            << sc << " dup scale\n90 rotate\n"

   880            << -bb.left() << ' ' << -bb.top() << " translate\n";

   881         }

   882     else if(_scale!=1.0) os << _scale << " dup scale\n";

   884     if(_showArcs) {

   885       os << "%Arcs:\ngsave\n";

   886       if(_enableParallel) {

   887         std::vector<Arc> el;

   888         for(ArcIt e(g);e!=INVALID;++e)

   889           if((!_undirected||g.source(e)<g.target(e))&&_arcWidths[e]>0

   890              &&g.source(e)!=g.target(e))

   891             el.push_back(e);

   892         std::sort(el.begin(),el.end(),arcLess(g));

   894         typename std::vector<Arc>::iterator j;

   895         for(typename std::vector<Arc>::iterator i=el.begin();i!=el.end();i=j) {

   896           for(j=i+1;j!=el.end()&&isParallel(*i,*j);++j) ;

   898           double sw=0;

   899           for(typename std::vector<Arc>::iterator e=i;e!=j;++e)

   900             sw+=_arcWidths[*e]*_arcWidthScale+_parArcDist;

   901           sw-=_parArcDist;

   902           sw/=-2.0;

   903           dim2::Point<double>

   904             dvec(mycoords[g.target(*i)]-mycoords[g.source(*i)]);

   905           double l=std::sqrt(dvec.normSquare());

   906           dim2::Point<double> d(dvec/std::max(l,EPSILON));

   907           dim2::Point<double> m;

   908 //           m=dim2::Point<double>(mycoords[g.target(*i)]+

   909 //                                 mycoords[g.source(*i)])/2.0;

   911 //            m=dim2::Point<double>(mycoords[g.source(*i)])+

   912 //             dvec*(double(_nodeSizes[g.source(*i)])/

   913 //                (_nodeSizes[g.source(*i)]+_nodeSizes[g.target(*i)]));

   915           m=dim2::Point<double>(mycoords[g.source(*i)])+

   916             d*(l+_nodeSizes[g.source(*i)]-_nodeSizes[g.target(*i)])/2.0;

   918           for(typename std::vector<Arc>::iterator e=i;e!=j;++e) {

   919             sw+=_arcWidths[*e]*_arcWidthScale/2.0;

   920             dim2::Point<double> mm=m+rot90(d)*sw/.75;

   921             if(_drawArrows) {

   922               int node_shape;

   923               dim2::Point<double> s=mycoords[g.source(*e)];

   924               dim2::Point<double> t=mycoords[g.target(*e)];

   925               double rn=_nodeSizes[g.target(*e)]*_nodeScale;

   926               node_shape=_nodeShapes[g.target(*e)];

   927               dim2::Bezier3 bez(s,mm,mm,t);

   928               double t1=0,t2=1;

   929               for(int ii=0;ii<INTERPOL_PREC;++ii)

   930                 if(isInsideNode(bez((t1+t2)/2)-t,rn,node_shape)) t2=(t1+t2)/2;

   931                 else t1=(t1+t2)/2;

   932               dim2::Point<double> apoint=bez((t1+t2)/2);

   933               rn = _arrowLength+_arcWidths[*e]*_arcWidthScale;

   934               rn*=rn;

   935               t2=(t1+t2)/2;t1=0;

   936               for(int ii=0;ii<INTERPOL_PREC;++ii)

   937                 if((bez((t1+t2)/2)-apoint).normSquare()>rn) t1=(t1+t2)/2;

   938                 else t2=(t1+t2)/2;

   939               dim2::Point<double> linend=bez((t1+t2)/2);

   940               bez=bez.before((t1+t2)/2);

   941 //               rn=_nodeSizes[g.source(*e)]*_nodeScale;

   942 //               node_shape=_nodeShapes[g.source(*e)];

   943 //               t1=0;t2=1;

   944 //               for(int i=0;i<INTERPOL_PREC;++i)

   945 //                 if(isInsideNode(bez((t1+t2)/2)-t,rn,node_shape))

   946 //                   t1=(t1+t2)/2;

   947 //                 else t2=(t1+t2)/2;

   948 //               bez=bez.after((t1+t2)/2);

   949               os << _arcWidths[*e]*_arcWidthScale << " setlinewidth "

   950                  << _arcColors[*e].red() << ' '

   951                  << _arcColors[*e].green() << ' '

   952                  << _arcColors[*e].blue() << " setrgbcolor newpath\n"

   953                  << bez.p1.x << ' ' <<  bez.p1.y << " moveto\n"

   954                  << bez.p2.x << ' ' << bez.p2.y << ' '

   955                  << bez.p3.x << ' ' << bez.p3.y << ' '

   956                  << bez.p4.x << ' ' << bez.p4.y << " curveto stroke\n";

   957               dim2::Point<double> dd(rot90(linend-apoint));

   958               dd*=(.5*_arcWidths[*e]*_arcWidthScale+_arrowWidth)/

   959                 std::sqrt(dd.normSquare());

   960               os << "newpath " << psOut(apoint) << " moveto "

   961                  << psOut(linend+dd) << " lineto "

   962                  << psOut(linend-dd) << " lineto closepath fill\n";

   963             }

   964             else {

   965               os << mycoords[g.source(*e)].x << ' '

   966                  << mycoords[g.source(*e)].y << ' '

   967                  << mm.x << ' ' << mm.y << ' '

   968                  << mycoords[g.target(*e)].x << ' '

   969                  << mycoords[g.target(*e)].y << ' '

   970                  << _arcColors[*e].red() << ' '

   971                  << _arcColors[*e].green() << ' '

   972                  << _arcColors[*e].blue() << ' '

   973                  << _arcWidths[*e]*_arcWidthScale << " lb\n";

   974             }

   975             sw+=_arcWidths[*e]*_arcWidthScale/2.0+_parArcDist;

   976           }

   977         }

   978       }

   979       else for(ArcIt e(g);e!=INVALID;++e)

   980         if((!_undirected||g.source(e)<g.target(e))&&_arcWidths[e]>0

   981            &&g.source(e)!=g.target(e)) {

   982           if(_drawArrows) {

   983             dim2::Point<double> d(mycoords[g.target(e)]-mycoords[g.source(e)]);

   984             double rn=_nodeSizes[g.target(e)]*_nodeScale;

   985             int node_shape=_nodeShapes[g.target(e)];

   986             double t1=0,t2=1;

   987             for(int i=0;i<INTERPOL_PREC;++i)

   988               if(isInsideNode((-(t1+t2)/2)*d,rn,node_shape)) t1=(t1+t2)/2;

   989               else t2=(t1+t2)/2;

   990             double l=std::sqrt(d.normSquare());

   991             d/=l;

   993             os << l*(1-(t1+t2)/2) << ' '

   994                << _arcWidths[e]*_arcWidthScale << ' '

   995                << d.x << ' ' << d.y << ' '

   996                << mycoords[g.source(e)].x << ' '

   997                << mycoords[g.source(e)].y << ' '

   998                << _arcColors[e].red() << ' '

   999                << _arcColors[e].green() << ' '

  1000                << _arcColors[e].blue() << " arr\n";

  1001           }

  1002           else os << mycoords[g.source(e)].x << ' '

  1003                   << mycoords[g.source(e)].y << ' '

  1004                   << mycoords[g.target(e)].x << ' '

  1005                   << mycoords[g.target(e)].y << ' '

  1006                   << _arcColors[e].red() << ' '

  1007                   << _arcColors[e].green() << ' '

  1008                   << _arcColors[e].blue() << ' '

  1009                   << _arcWidths[e]*_arcWidthScale << " l\n";

  1010         }

  1011       os << "grestore\n";

  1012     }

  1013     if(_showNodes) {

  1014       os << "%Nodes:\ngsave\n";

  1015       for(NodeIt n(g);n!=INVALID;++n) {

  1016         os << mycoords[n].x << ' ' << mycoords[n].y << ' '

  1017            << _nodeSizes[n]*_nodeScale << ' '

  1018            << _nodeColors[n].red() << ' '

  1019            << _nodeColors[n].green() << ' '

  1020            << _nodeColors[n].blue() << ' ';

  1021         switch(_nodeShapes[n]) {

  1022         case CIRCLE:

  1023           os<< "nc";break;

  1024         case SQUARE:

  1025           os<< "nsq";break;

  1026         case DIAMOND:

  1027           os<< "ndi";break;

  1028         case MALE:

  1029           os<< "nmale";break;

  1030         case FEMALE:

  1031           os<< "nfemale";break;

  1032         }

  1033         os<<'\n';

  1034       }

  1035       os << "grestore\n";

  1036     }

  1037     if(_showNodeText) {

  1038       os << "%Node texts:\ngsave\n";

  1039       os << "/fosi " << _nodeTextSize << " def\n";

  1040       os << "(Helvetica) findfont fosi scalefont setfont\n";

  1041       for(NodeIt n(g);n!=INVALID;++n) {

  1042         switch(_nodeTextColorType) {

  1043         case DIST_COL:

  1044           os << psOut(distantColor(_nodeColors[n])) << " setrgbcolor\n";

  1045           break;

  1046         case DIST_BW:

  1047           os << psOut(distantBW(_nodeColors[n])) << " setrgbcolor\n";

  1048           break;

  1049         case CUST_COL:

  1050           os << psOut(distantColor(_nodeTextColors[n])) << " setrgbcolor\n";

  1051           break;

  1052         default:

  1053           os << "0 0 0 setrgbcolor\n";

  1054         }

  1055         os << mycoords[n].x << ' ' << mycoords[n].y

  1056            << " (" << _nodeTexts[n] << ") cshow\n";

  1057       }

  1058       os << "grestore\n";

  1059     }

  1060     if(_showNodePsText) {

  1061       os << "%Node PS blocks:\ngsave\n";

  1062       for(NodeIt n(g);n!=INVALID;++n)

  1063         os << mycoords[n].x << ' ' << mycoords[n].y

  1064            << " moveto\n" << _nodePsTexts[n] << "\n";

  1065       os << "grestore\n";

  1066     }

  1068     os << "grestore\nshowpage\n";

  1070     //CleanUp:

  1071     if(_pleaseRemoveOsStream) {delete &os;}

  1072   }

  1074   ///\name Aliases

  1075   ///These are just some aliases to other parameter setting functions.

  1077   ///@{

  1079   ///An alias for arcWidths()

  1080   template<class X> GraphToEps<ArcWidthsTraits<X> > edgeWidths(const X &x)

  1081   {

  1082     return arcWidths(x);

  1083   }

  1085   ///An alias for arcColors()

  1086   template<class X> GraphToEps<ArcColorsTraits<X> >

  1087   edgeColors(const X &x)

  1088   {

  1089     return arcColors(x);

  1090   }

  1092   ///An alias for arcWidthScale()

  1093   GraphToEps<T> &edgeWidthScale(double d) {return arcWidthScale(d);}

  1095   ///An alias for autoArcWidthScale()

  1096   GraphToEps<T> &autoEdgeWidthScale(bool b=true)

  1097   {

  1098     return autoArcWidthScale(b);

  1099   }

  1101   ///An alias for absoluteArcWidths()

  1102   GraphToEps<T> &absoluteEdgeWidths(bool b=true)

  1103   {

  1104     return absoluteArcWidths(b);

  1105   }

  1107   ///An alias for parArcDist()

  1108   GraphToEps<T> &parEdgeDist(double d) {return parArcDist(d);}

  1110   ///An alias for hideArcs()

  1111   GraphToEps<T> &hideEdges(bool b=true) {return hideArcs(b);}

  1113   ///@}

  1114 };

  1116 template<class T>

  1117 const int GraphToEps<T>::INTERPOL_PREC = 20;

  1118 template<class T>

  1119 const double GraphToEps<T>::A4HEIGHT = 841.8897637795276;

  1120 template<class T>

  1121 const double GraphToEps<T>::A4WIDTH  = 595.275590551181;

  1122 template<class T>

  1123 const double GraphToEps<T>::A4BORDER = 15;

  1126 ///Generates an EPS file from a graph

  1128 ///\ingroup eps_io

  1129 ///Generates an EPS file from a graph.

  1130 ///\param g Reference to the graph to be printed.

  1131 ///\param os Reference to the output stream.

  1132 ///By default it is <tt>std::cout</tt>.

  1133 ///

  1134 ///This function also has a lot of

  1135 ///\ref named-templ-func-param "named parameters",

  1136 ///they are declared as the members of class \ref GraphToEps. The following

  1137 ///example shows how to use these parameters.

  1138 ///\code

  1139 /// graphToEps(g,os).scale(10).coords(coords)

  1140 ///              .nodeScale(2).nodeSizes(sizes)

  1141 ///              .arcWidthScale(.4).run();

  1142 ///\endcode

  1143 ///

  1144 ///For more detailed examples see the \ref graph_to_eps_demo.cc demo file.

  1145 ///

  1146 ///\warning Don't forget to put the \ref GraphToEps::run() "run()"

  1147 ///to the end of the parameter list.

  1148 ///\sa GraphToEps

  1149 ///\sa graphToEps(G &g, const char *file_name)

  1150 template<class G>

  1151 GraphToEps<DefaultGraphToEpsTraits<G> >

  1152 graphToEps(G &g, std::ostream& os=std::cout)

  1153 {

  1154   return

  1155     GraphToEps<DefaultGraphToEpsTraits<G> >(DefaultGraphToEpsTraits<G>(g,os));

  1156 }

  1158 ///Generates an EPS file from a graph

  1160 ///\ingroup eps_io

  1161 ///This function does the same as

  1162 ///\ref graphToEps(G &g,std::ostream& os)

  1163 ///but it writes its output into the file \c file_name

  1164 ///instead of a stream.

  1165 ///\sa graphToEps(G &g, std::ostream& os)

  1166 template<class G>

  1167 GraphToEps<DefaultGraphToEpsTraits<G> >

  1168 graphToEps(G &g,const char *file_name)

  1169 {

  1170   std::ostream* os = new std::ofstream(file_name);

  1171   if (!(*os)) {

  1172     delete os;

  1173     throw IoError("Cannot write file", file_name);

  1174   }

  1175   return GraphToEps<DefaultGraphToEpsTraits<G> >

  1176     (DefaultGraphToEpsTraits<G>(g,*os,true));

  1177 }

  1179 ///Generates an EPS file from a graph

  1181 ///\ingroup eps_io

  1182 ///This function does the same as

  1183 ///\ref graphToEps(G &g,std::ostream& os)

  1184 ///but it writes its output into the file \c file_name

  1185 ///instead of a stream.

  1186 ///\sa graphToEps(G &g, std::ostream& os)

  1187 template<class G>

  1188 GraphToEps<DefaultGraphToEpsTraits<G> >

  1189 graphToEps(G &g,const std::string& file_name)

  1190 {

  1191   std::ostream* os = new std::ofstream(file_name.c_str());

  1192   if (!(*os)) {

  1193     delete os;

  1194     throw IoError("Cannot write file", file_name);

  1195   }

  1196   return GraphToEps<DefaultGraphToEpsTraits<G> >

  1197     (DefaultGraphToEpsTraits<G>(g,*os,true));

  1198 }

  1200 } //END OF NAMESPACE LEMON

  1202 #endif // LEMON_GRAPH_TO_EPS_H

author	Alpar Juttner <alpar@cs.elte.hu>
	Fri, 21 Nov 2008 14:11:29 +0000
changeset 389	660db48f324f
parent 291	d901321d6555
child 440	88ed40ad0d4f
child 483	70aa52d30f13
permissions	-rw-r--r--