RhodeCode

  cout << "Create 'graph_to_eps_demo_out_arr.eps'" << endl;

  graphToEps(g,"graph_to_eps_demo_out_arr.eps").

    //scale(10).

    title("Sample .eps figure (with arrowheads)").

    copyright("(C) 2003-2007 LEMON Project").

    absoluteNodeSizes().absoluteArcWidths().

    nodeColors(composeMap(palette,colors)).

    coords(coords).

    nodeScale(2).nodeSizes(sizes).

    nodeShapes(shapes).

    arcColors(composeMap(palette,ecolors)).

    arcWidthScale(.4).arcWidths(widths).

    nodeTexts(id).nodeTextSize(3).

    drawArrows().arrowWidth(1).arrowLength(1).

    run();

  e=g.addArc(n1,n4); ecolors[e]=2; widths[e]=1;

  e=g.addArc(n4,n1); ecolors[e]=1; widths[e]=2;

  e=g.addArc(n1,n2); ecolors[e]=1; widths[e]=1;

  e=g.addArc(n1,n2); ecolors[e]=2; widths[e]=1;

  e=g.addArc(n1,n2); ecolors[e]=3; widths[e]=1;

  e=g.addArc(n1,n2); ecolors[e]=4; widths[e]=1;

  e=g.addArc(n1,n2); ecolors[e]=5; widths[e]=1;

  e=g.addArc(n1,n2); ecolors[e]=6; widths[e]=1;

  e=g.addArc(n1,n2); ecolors[e]=7; widths[e]=1;

  cout << "Create 'graph_to_eps_demo_out_par.eps'" << endl;

  graphToEps(g,"graph_to_eps_demo_out_par.eps").

    //scale(10).

    title("Sample .eps figure (parallel arcs)").

    copyright("(C) 2003-2007 LEMON Project").

    absoluteNodeSizes().absoluteArcWidths().

    nodeShapes(shapes).

    coords(coords).

    nodeScale(2).nodeSizes(sizes).

    nodeColors(composeMap(palette,colors)).

    arcColors(composeMap(palette,ecolors)).

    arcWidthScale(.4).arcWidths(widths).

    nodeTexts(id).nodeTextSize(3).

    enableParallel().parArcDist(1.5).

    run();

  cout << "Create 'graph_to_eps_demo_out_par_arr.eps'" << endl;

  graphToEps(g,"graph_to_eps_demo_out_par_arr.eps").

    //scale(10).

    title("Sample .eps figure (parallel arcs and arrowheads)").

    copyright("(C) 2003-2007 LEMON Project").

    absoluteNodeSizes().absoluteArcWidths().

    nodeScale(2).nodeSizes(sizes).

    coords(coords).

    nodeShapes(shapes).

    nodeColors(composeMap(palette,colors)).

    arcColors(composeMap(palette,ecolors)).

    arcWidthScale(.3).arcWidths(widths).

    nodeTexts(id).nodeTextSize(3).

    enableParallel().parArcDist(1).

    drawArrows().arrowWidth(1).arrowLength(1).

    run();

  cout << "Create 'graph_to_eps_demo_out_a4.eps'" << endl;

  graphToEps(g,"graph_to_eps_demo_out_a4.eps").scaleToA4().

    title("Sample .eps figure (fits to A4)").

    copyright("(C) 2003-2007 LEMON Project").

    absoluteNodeSizes().absoluteArcWidths().

    nodeScale(2).nodeSizes(sizes).

    coords(coords).

    nodeShapes(shapes).

    nodeColors(composeMap(palette,colors)).

    arcColors(composeMap(palette,ecolors)).

    arcWidthScale(.3).arcWidths(widths).

    nodeTexts(id).nodeTextSize(3).

    enableParallel().parArcDist(1).

    drawArrows().arrowWidth(1).arrowLength(1).

    run();

  ListDigraph h;

  ListDigraph::NodeMap<int> hcolors(h);

  ListDigraph::NodeMap<Point> hcoords(h);

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

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

    Node n=h.addNode();

    hcoords[n]=Point(i%cols,i/cols);

    hcolors[n]=i;

  }

  cout << "Create 'graph_to_eps_demo_out_colors.eps'" << endl;

  graphToEps(h,"graph_to_eps_demo_out_colors.eps").

    //scale(60).

    title("Sample .eps figure (Palette demo)").

    copyright("(C) 2003-2007 LEMON Project").

    coords(hcoords).

    absoluteNodeSizes().absoluteArcWidths().

    distantColorNodeTexts().

    //    distantBWNodeTexts().

    nodeTexts(hcolors).nodeTextSize(.6).

    nodeColors(composeMap(paletteW,hcolors)).

    run();

}

      typedef typename MT::Value Value;

      const MT ↦

      int yscale;

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

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

    };

  }

///Default traits class of \ref GraphToEps

///Default traits class of \ref GraphToEps

///

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

template<class G>

struct DefaultGraphToEpsTraits

{

  typedef G Graph;

  typedef typename Graph::Node Node;

  typedef typename Graph::NodeIt NodeIt;

  typedef typename Graph::Arc Arc;

  typedef typename Graph::ArcIt ArcIt;

  typedef typename Graph::InArcIt InArcIt;

  typedef typename Graph::OutArcIt OutArcIt;

  const Graph &g;

  std::ostream& os;

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

  CoordsMapType _coords;

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

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

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

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

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

  double _arcWidthScale;

  double _nodeScale;

  double _xBorder, _yBorder;

  double _scale;

  double _nodeBorderQuotient;

  bool _drawArrows;

  double _arrowLength, _arrowWidth;

  bool _showNodes, _showArcs;

  bool _enableParallel;

  double _parArcDist;

  bool _showNodeText;

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

  double _nodeTextSize;

  bool _showNodePsText;

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

  char *_nodePsTextsPreamble;

  bool _undirected;

  bool _pleaseRemoveOsStream;

  bool _scaleToA4;

  std::string _title;

  std::string _copyright;

  enum NodeTextColorType 

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

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

  bool _autoNodeScale;

  bool _autoArcWidthScale;

  bool _absoluteNodeSizes;

  bool _absoluteArcWidths;

  bool _negY;

  bool _preScale;

  ///Constructor

  ///Constructor

  ///\param _g is a reference to the graph to be printed

  ///\param _os is a reference to the output stream.

  ///\param _os is a reference to the output stream.

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

  ///will be explicitly deallocated by the destructor.

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

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

			  bool _pros=false) :

    g(_g), os(_os),

    _nodeColors(WHITE), _arcColors(BLACK),

    _arcWidths(1.0), _arcWidthScale(0.003),

    _nodeBorderQuotient(.1),

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

    _showNodes(true), _showArcs(true),

    _enableParallel(false), _parArcDist(1),

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

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

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

    _pleaseRemoveOsStream(_pros), _scaleToA4(false),

    _nodeTextColorType(SAME_COL), _nodeTextColors(BLACK),

    _autoNodeScale(false),

    _autoArcWidthScale(false),

    _absoluteNodeSizes(false),

    _absoluteArcWidths(false),

    _negY(false),

    _preScale(true)

  {}

};

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

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

///\todo Is 'helper class' a good name for this?

///

///\todo Follow PostScript's DSC.

/// Use own dictionary.

///\todo Useful new features.

/// - Linestyles: dotted, dashed etc.

/// - A second color and percent value for the lines.

template<class T> class GraphToEps : public T 

{

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

  using T::g;

  using T::os;

  using T::_coords;

  using T::_nodeSizes;

  using T::_nodeShapes;

  using T::_nodeColors;

  using T::_arcColors;

  using T::_arcWidths;

  using T::_arcWidthScale;

  using T::_nodeScale;

  using T::_xBorder;

  using T::_yBorder;

  using T::_scale;

  using T::_nodeBorderQuotient;

  using T::_drawArrows;

  using T::_arrowLength;

  using T::_arrowWidth;

  using T::_showNodes;

  using T::_showArcs;

  using T::_enableParallel;

  using T::_parArcDist;

  using T::_showNodeText;

  using T::_nodeTexts;  

  using T::_nodeTextSize;

  using T::_showNodePsText;

  using T::_nodePsTexts;  

  using T::_nodePsTextsPreamble;

  using T::_undirected;

  using T::_pleaseRemoveOsStream;

  using T::_scaleToA4;

  using T::_title;

  using T::_copyright;

  using T::NodeTextColorType;

  using T::CUST_COL;

  using T::DIST_COL;

  using T::DIST_BW;

  using T::_nodeTextColorType;

  using T::_nodeTextColors;

  using T::_autoNodeScale;

  using T::_autoArcWidthScale;

  using T::_absoluteNodeSizes;

  using T::_absoluteArcWidths;

  using T::_negY;

  using T::_preScale;

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

  typedef typename T::Graph Graph;

  typedef typename Graph::Node Node;

  ///block to the nodes.

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

  ///the PostScript block inserted.

  ///

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

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

  ///

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

  ///ostream.

  ///

  ///\sa nodePsTextsPreamble()

  ///\todo Offer the choise not to move to the centre but pass the coordinates

  ///to the Postscript block inserted.

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

  {

    dontPrint=true;

    _showNodePsText=true;

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

  }

  template<class X> struct ArcWidthsTraits : public T {

    const X &_arcWidths;

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

  };

  ///Sets the map of the arc widths

  ///Sets the map of the arc widths

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

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

  {

    dontPrint=true;

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

  }

  template<class X> struct NodeColorsTraits : public T {

    const X &_nodeColors;

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

  };

  ///Sets the map of the node colors

  ///Sets the map of the node colors

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

  ///

  ///\sa Palette

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

  nodeColors(const X &x)

  {

    dontPrint=true;

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

  }

  template<class X> struct NodeTextColorsTraits : public T {

    const X &_nodeTextColors;

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

  };

  ///Sets the map of the node text colors

  ///Sets the map of the node text colors

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

  ///

  ///\sa Palette

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

  nodeTextColors(const X &x)

  {

    dontPrint=true;

    _nodeTextColorType=CUST_COL;

    return GraphToEps<NodeTextColorsTraits<X> >

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

  }

  template<class X> struct ArcColorsTraits : public T {

    const X &_arcColors;

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

  };

  ///Sets the map of the arc colors

  ///Sets the map of the arc colors

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

  ///

  ///\sa Palette

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

  arcColors(const X &x)

  {

    dontPrint=true;

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

  }

  ///Sets a global scale factor for node sizes

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

  /// 

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

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

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

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

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

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

  /// equal to \c d.

  /// \sa nodeSizes()

  /// \sa autoNodeScale()

  ///Turns on/off the automatic node width scaling.

  ///Turns on/off the automatic node width scaling.

  ///

  ///\sa nodeScale()

  ///

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

    _autoNodeScale=b;return *this;

  }

  ///Turns on/off the absolutematic node width scaling.

  ///Turns on/off the absolutematic node width scaling.

  ///

  ///\sa nodeScale()

  ///

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

    _absoluteNodeSizes=b;return *this;

  }

  ///Negates the Y coordinates.

  ///Negates the Y coordinates.

  ///

  ///\todo More docs.

  ///

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

    _negY=b;return *this;

  }

  ///Turn on/off prescaling

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

  ///very big or very small bounding boxes.

  ///

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

  ///

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

    _preScale=b;return *this;

  }

  ///Sets a global scale factor for arc widths

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

  ///

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

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

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

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

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

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

  /// equal to \c d.

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

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

  ///

  ///\sa arcWidthScale()

  ///

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

    _autoArcWidthScale=b;return *this;

  }

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

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

  ///

  ///\sa arcWidthScale()

  ///

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

    _absoluteArcWidths=b;return *this;

  }

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

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

  ///

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

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

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

  ///

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

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

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

  ///

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

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

  }

  ///Sets whether to draw arrows

  ///Sets whether to draw arrows

  ///

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

  ///Sets the length of the arrowheads

  ///Sets the length of the arrowheads

  ///

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

  ///Sets the width of the arrowheads

  ///Sets the width of the arrowheads

  ///

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

  ///Scales the drawing to fit to A4 page

  ///Scales the drawing to fit to A4 page

  ///

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

  ///Enables parallel arcs

  ///Enables parallel arcs

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

  ///Sets the distance 

  ///Sets the distance 

  ///

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

  ///Hides the arcs

  ///Hides the arcs

  ///

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

  ///Hides the nodes

  ///Hides the nodes

  ///

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

  ///Sets the size of the node texts

  ///Sets the size of the node texts

  ///

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

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

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

  ///as it is possible

  ///

  GraphToEps<T> &distantColorNodeTexts()

  {_nodeTextColorType=DIST_COL;return *this;}

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

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