alpar@1073: /* -*- C++ -*- alpar@1073: * src/lemon/graph_to_eps.h - Part of LEMON, a generic C++ optimization library alpar@1073: * alpar@1164: * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport alpar@1073: * (Egervary Combinatorial Optimization Research Group, EGRES). alpar@1073: * alpar@1073: * Permission to use, modify and distribute this software is granted alpar@1073: * provided that this copyright notice appears in all copies. For alpar@1073: * precise terms see the accompanying LICENSE file. alpar@1073: * alpar@1073: * This software is provided "AS IS" with no warranty of any kind, alpar@1073: * express or implied, and with no claim as to its suitability for any alpar@1073: * purpose. alpar@1073: * alpar@1073: */ alpar@1073: alpar@1073: #ifndef LEMON_GRAPH_TO_EPS_H alpar@1073: #define LEMON_GRAPH_TO_EPS_H alpar@1073: alpar@1108: #include alpar@1108: #include alpar@1108: alpar@1073: #include alpar@1073: #include alpar@1073: #include alpar@1073: #include alpar@1073: #include alpar@1073: alpar@1073: #include alpar@1073: #include alpar@1073: #include alpar@1073: alpar@1073: ///\ingroup misc alpar@1073: ///\file alpar@1073: ///\brief Simple graph drawer alpar@1073: /// alpar@1073: ///\author Alpar Juttner alpar@1073: alpar@1073: namespace lemon { alpar@1073: alpar@1073: ///Data structure representing RGB colors. alpar@1073: alpar@1073: ///Data structure representing RGB colors. alpar@1073: ///\ingroup misc alpar@1073: class Color alpar@1073: { alpar@1073: double _r,_g,_b; alpar@1073: public: alpar@1073: ///Default constructor alpar@1073: Color() {} alpar@1073: ///Constructor alpar@1073: Color(double r,double g,double b) :_r(r),_g(g),_b(b) {}; alpar@1073: ///Returns the red component alpar@1178: alpar@1178: ///\todo \c red() could be a better name... alpar@1178: double getR() const {return _r;} alpar@1073: ///Returns the green component alpar@1178: double getG() const {return _g;} alpar@1073: ///Returns the blue component alpar@1178: double getB() const {return _b;} alpar@1073: ///Set the color components alpar@1073: void set(double r,double g,double b) { _r=r;_g=g;_b=b; }; alpar@1073: }; alpar@1178: alpar@1178: ///Maps ints to different \ref Color "Color"s alpar@1178: alpar@1178: ///This map assing one of the predefined \ref Color "Color"s alpar@1178: ///to each int. It is possible to change the colors as well as their alpar@1178: ///number. The integer range is cyclically mapped to the provided set of colors. alpar@1178: /// alpar@1178: ///This is a true \ref concept::ReferenceMap "reference map", so you can also alpar@1178: ///change the actual colors. alpar@1178: alpar@1178: class ColorSet : public MapBase alpar@1178: { alpar@1178: std::vector colors; alpar@1178: public: alpar@1178: ///Constructor alpar@1178: alpar@1178: ///Constructor alpar@1178: ///\param have_white indicates wheter white is alpar@1178: ///amongst the provided color (\c true) or not (\c false). If it is true, alpar@1178: ///white will be assigned to \c 0. alpar@1178: ///\param num the number of the allocated colors. If it is \c 0 alpar@1178: ///the default color configuration is set up (26 color plus the while). alpar@1178: ///If \c num is less then 26/27 then the default color list is cut. Otherwise alpar@1178: ///the color list is filled repeatedly with the default color list. alpar@1178: ColorSet(bool have_white=false,int num=0) alpar@1178: { alpar@1178: do { alpar@1178: if(have_white) colors.push_back(Color(1,1,1)); alpar@1178: alpar@1178: colors.push_back(Color(0,0,0)); alpar@1178: colors.push_back(Color(1,0,0)); alpar@1178: colors.push_back(Color(0,1,0)); alpar@1178: colors.push_back(Color(0,0,1)); alpar@1178: colors.push_back(Color(1,1,0)); alpar@1178: colors.push_back(Color(1,0,1)); alpar@1178: colors.push_back(Color(0,1,1)); alpar@1178: alpar@1178: colors.push_back(Color(.5,0,0)); alpar@1178: colors.push_back(Color(0,.5,0)); alpar@1178: colors.push_back(Color(0,0,.5)); alpar@1178: colors.push_back(Color(.5,.5,0)); alpar@1178: colors.push_back(Color(.5,0,.5)); alpar@1178: colors.push_back(Color(0,.5,.5)); alpar@1178: alpar@1178: colors.push_back(Color(.5,.5,.5)); alpar@1178: colors.push_back(Color(1,.5,.5)); alpar@1178: colors.push_back(Color(.5,1,.5)); alpar@1178: colors.push_back(Color(.5,.5,1)); alpar@1178: colors.push_back(Color(1,1,.5)); alpar@1178: colors.push_back(Color(1,.5,1)); alpar@1178: colors.push_back(Color(.5,1,1)); alpar@1178: alpar@1178: colors.push_back(Color(1,.5,0)); alpar@1178: colors.push_back(Color(.5,1,0)); alpar@1178: colors.push_back(Color(1,0,.5)); alpar@1178: colors.push_back(Color(0,1,.5)); alpar@1178: colors.push_back(Color(0,.5,1)); alpar@1178: colors.push_back(Color(.5,0,1)); alpar@1178: } while(int(colors.size())0) colors.resize(num); alpar@1178: } alpar@1178: ///\e alpar@1178: Color &operator[](int i) alpar@1178: { alpar@1178: return colors[i%colors.size()]; alpar@1178: } alpar@1178: ///\e alpar@1178: const Color &operator[](int i) const alpar@1178: { alpar@1178: return colors[i%colors.size()]; alpar@1178: } alpar@1178: ///\e alpar@1178: void set(int i,const Color &c) alpar@1178: { alpar@1178: colors[i%colors.size()]=c; alpar@1178: } alpar@1178: ///Sets the number of the exiting colors. alpar@1178: void resize(int s) { colors.resize(s);} alpar@1178: ///Returns the munber of the existing colors. alpar@1178: std::size_t size() { return colors.size();} alpar@1178: }; alpar@1178: alpar@1178: ///Returns a visible distinct \ref Color alpar@1178: alpar@1178: ///Returns a \ref Color which is as different from the given parameter alpar@1178: ///as it is possible. alpar@1178: inline Color distantColor(const Color &c) alpar@1178: { alpar@1178: return Color(c.getR()<.5?1:0,c.getG()<.5?1:0,c.getB()<.5?1:0); alpar@1178: } alpar@1178: ///Returns black for light colors and white for the dark ones. alpar@1178: alpar@1178: ///Returns black for light colors and white for the dark ones. alpar@1178: ///\todo weighted average would be better alpar@1178: inline Color distantBW(const Color &c){ alpar@1180: // double v=(c.getR()+c.getG()+c.getB())<1.5?1:0; alpar@1180: double v=(.2125*c.getR()+.7154*c.getG()+.0721*c.getB())<.5?1:0; alpar@1178: return Color(v,v,v); alpar@1178: } alpar@1178: alpar@1073: ///Default traits class of \ref GraphToEps alpar@1073: alpar@1073: ///Default traits class of \ref GraphToEps alpar@1073: /// alpar@1073: ///\c G is the type of the underlying graph. alpar@1073: template alpar@1073: struct DefaultGraphToEpsTraits alpar@1073: { alpar@1073: typedef G Graph; alpar@1073: typedef typename Graph::Node Node; alpar@1073: typedef typename Graph::NodeIt NodeIt; alpar@1073: typedef typename Graph::Edge Edge; alpar@1073: typedef typename Graph::EdgeIt EdgeIt; alpar@1073: typedef typename Graph::InEdgeIt InEdgeIt; alpar@1073: typedef typename Graph::OutEdgeIt OutEdgeIt; alpar@1073: alpar@1073: alpar@1073: const Graph &g; alpar@1073: alpar@1073: std::ostream& os; alpar@1073: alpar@1073: ConstMap > _coords; alpar@1073: ConstMap _nodeSizes; alpar@1086: ConstMap _nodeShapes; alpar@1073: alpar@1073: ConstMap _nodeColors; alpar@1073: ConstMap _edgeColors; alpar@1073: alpar@1073: ConstMap _edgeWidths; alpar@1103: alpar@1103: static const double A4HEIGHT = 841.8897637795276; alpar@1103: static const double A4WIDTH = 595.275590551181; alpar@1103: static const double A4BORDER = 15; alpar@1103: alpar@1073: alpar@1073: double _edgeWidthScale; alpar@1073: alpar@1073: double _nodeScale; alpar@1073: double _xBorder, _yBorder; alpar@1073: double _scale; alpar@1073: double _nodeBorderQuotient; alpar@1073: alpar@1073: bool _drawArrows; alpar@1073: double _arrowLength, _arrowWidth; alpar@1073: alpar@1073: bool _showNodes, _showEdges; alpar@1073: alpar@1073: bool _enableParallel; alpar@1073: double _parEdgeDist; alpar@1073: alpar@1073: bool _showNodeText; alpar@1073: ConstMap _nodeTexts; alpar@1073: double _nodeTextSize; alpar@1073: alpar@1085: bool _showNodePsText; alpar@1085: ConstMap _nodePsTexts; alpar@1085: char *_nodePsTextsPreamble; alpar@1085: alpar@1073: bool _undir; alpar@1073: bool _pleaseRemoveOsStream; alpar@1103: alpar@1103: bool _scaleToA4; alpar@1108: alpar@1108: std::string _title; alpar@1108: std::string _copyright; alpar@1178: alpar@1178: enum NodeTextColorType alpar@1178: { DIST_COL=0, DIST_BW=1, CUST_COL=2, SAME_COL=3 } _nodeTextColorType; alpar@1178: ConstMap _nodeTextColors; alpar@1178: alpar@1073: ///Constructor alpar@1073: alpar@1073: ///Constructor alpar@1073: ///\param _g is a reference to the graph to be printed alpar@1073: ///\param _os is a reference to the output stream. alpar@1073: ///\param _os is a reference to the output stream. alpar@1073: ///\param _pros If it is \c true, then the \c ostream referenced by \c _os alpar@1073: ///will be explicitly deallocated by the destructor. alpar@1073: ///By default it is std::cout alpar@1073: DefaultGraphToEpsTraits(const G &_g,std::ostream& _os=std::cout, alpar@1073: bool _pros=false) : alpar@1073: g(_g), os(_os), alpar@1086: _coords(xy(1,1)), _nodeSizes(1.0), _nodeShapes(0), alpar@1073: _nodeColors(Color(1,1,1)), _edgeColors(Color(0,0,0)), alpar@1073: _edgeWidths(1), _edgeWidthScale(0.3), alpar@1073: _nodeScale(1.0), _xBorder(10), _yBorder(10), _scale(1.0), alpar@1073: _nodeBorderQuotient(.1), alpar@1073: _drawArrows(false), _arrowLength(1), _arrowWidth(0.3), alpar@1073: _showNodes(true), _showEdges(true), alpar@1073: _enableParallel(false), _parEdgeDist(1), alpar@1073: _showNodeText(false), _nodeTexts(false), _nodeTextSize(1), alpar@1085: _showNodePsText(false), _nodePsTexts(false), _nodePsTextsPreamble(0), alpar@1073: _undir(false), alpar@1178: _pleaseRemoveOsStream(_pros), _scaleToA4(false), alpar@1178: _nodeTextColorType(SAME_COL), _nodeTextColors(Color(0,0,0)) alpar@1178: {} alpar@1073: }; alpar@1073: alpar@1073: ///Helper class to implement the named parameters of \ref graphToEps() alpar@1073: alpar@1073: ///Helper class to implement the named parameters of \ref graphToEps() alpar@1073: ///\todo Is 'helper class' a good name for this? alpar@1073: /// alpar@1103: ///\todo Follow PostScript's DSC. alpar@1107: /// Use own dictionary. alpar@1107: ///\todo Useful new features. alpar@1107: /// - Linestyles: dotted, dashed etc. alpar@1107: /// - A second color and percent value for the lines. alpar@1073: template class GraphToEps : public T alpar@1073: { alpar@1073: typedef typename T::Graph Graph; alpar@1073: typedef typename Graph::Node Node; alpar@1073: typedef typename Graph::NodeIt NodeIt; alpar@1073: typedef typename Graph::Edge Edge; alpar@1073: typedef typename Graph::EdgeIt EdgeIt; alpar@1073: typedef typename Graph::InEdgeIt InEdgeIt; alpar@1073: typedef typename Graph::OutEdgeIt OutEdgeIt; alpar@1073: alpar@1087: static const int INTERPOL_PREC=20; alpar@1087: alpar@1073: bool dontPrint; alpar@1073: alpar@1107: public: alpar@1107: ///Node shapes alpar@1107: alpar@1107: ///Node shapes alpar@1107: /// alpar@1107: enum NodeShapes { alpar@1107: /// = 0 alpar@1107: ///\image html nodeshape_0.png alpar@1107: ///\image latex nodeshape_0.eps "CIRCLE shape (0)" width=2cm alpar@1107: CIRCLE=0, alpar@1107: /// = 1 alpar@1107: ///\image html nodeshape_1.png alpar@1107: ///\image latex nodeshape_1.eps "SQUARE shape (1)" width=2cm alpar@1107: /// alpar@1107: SQUARE=1, alpar@1107: /// = 2 alpar@1107: ///\image html nodeshape_2.png alpar@1107: ///\image latex nodeshape_2.eps "DIAMOND shape (2)" width=2cm alpar@1107: /// alpar@1107: DIAMOND=2 alpar@1107: }; alpar@1107: alpar@1107: private: alpar@1073: class edgeLess { alpar@1073: const Graph &g; alpar@1073: public: alpar@1073: edgeLess(const Graph &_g) : g(_g) {} alpar@1073: bool operator()(Edge a,Edge b) const alpar@1073: { alpar@1073: Node ai=min(g.source(a),g.target(a)); alpar@1073: Node aa=max(g.source(a),g.target(a)); alpar@1073: Node bi=min(g.source(b),g.target(b)); alpar@1073: Node ba=max(g.source(b),g.target(b)); alpar@1073: return ai rot(xy v) alpar@1073: { alpar@1073: return xy(v.y,-v.x); alpar@1073: } alpar@1178: template alpar@1178: static std::string psOut(const xy &p) alpar@1073: { alpar@1073: std::ostringstream os; alpar@1073: os << p.x << ' ' << p.y; alpar@1073: return os.str(); alpar@1073: } alpar@1178: static std::string psOut(const Color &c) alpar@1178: { alpar@1178: std::ostringstream os; alpar@1178: os << c.getR() << ' ' << c.getG() << ' ' << c.getB(); alpar@1178: return os.str(); alpar@1178: } alpar@1073: alpar@1073: public: alpar@1073: GraphToEps(const T &t) : T(t), dontPrint(false) {}; alpar@1073: alpar@1073: template struct CoordsTraits : public T { alpar@1073: const X &_coords; alpar@1073: CoordsTraits(const T &t,const X &x) : T(t), _coords(x) {} alpar@1073: }; alpar@1073: ///Sets the map of the node coordinates alpar@1073: alpar@1073: ///Sets the map of the node coordinates. alpar@1103: ///\param x must be a node map with xy or \ref xy "xy" values. alpar@1073: template GraphToEps > coords(const X &x) { alpar@1073: dontPrint=true; alpar@1073: return GraphToEps >(CoordsTraits(*this,x)); alpar@1073: } alpar@1073: template struct NodeSizesTraits : public T { alpar@1073: const X &_nodeSizes; alpar@1073: NodeSizesTraits(const T &t,const X &x) : T(t), _nodeSizes(x) {} alpar@1073: }; alpar@1073: ///Sets the map of the node sizes alpar@1073: alpar@1073: ///Sets the map of the node sizes alpar@1073: ///\param x must be a node map with \c double (or convertible) values. alpar@1073: template GraphToEps > nodeSizes(const X &x) alpar@1073: { alpar@1073: dontPrint=true; alpar@1073: return GraphToEps >(NodeSizesTraits(*this,x)); alpar@1073: } alpar@1086: template struct NodeShapesTraits : public T { alpar@1086: const X &_nodeShapes; alpar@1086: NodeShapesTraits(const T &t,const X &x) : T(t), _nodeShapes(x) {} alpar@1086: }; alpar@1086: ///Sets the map of the node shapes alpar@1086: alpar@1107: ///Sets the map of the node shapes. alpar@1107: ///The availabe shape values alpar@1107: ///can be found in \ref NodeShapes "enum NodeShapes". alpar@1086: ///\param x must be a node map with \c int (or convertible) values. alpar@1107: ///\sa NodeShapes alpar@1086: template GraphToEps > nodeShapes(const X &x) alpar@1086: { alpar@1086: dontPrint=true; alpar@1086: return GraphToEps >(NodeShapesTraits(*this,x)); alpar@1086: } alpar@1073: template struct NodeTextsTraits : public T { alpar@1073: const X &_nodeTexts; alpar@1073: NodeTextsTraits(const T &t,const X &x) : T(t), _nodeTexts(x) {} alpar@1073: }; alpar@1073: ///Sets the text printed on the nodes alpar@1073: alpar@1073: ///Sets the text printed on the nodes alpar@1073: ///\param x must be a node map with type that can be pushed to a standard alpar@1073: ///ostream. alpar@1073: template GraphToEps > nodeTexts(const X &x) alpar@1073: { alpar@1073: dontPrint=true; alpar@1073: _showNodeText=true; alpar@1073: return GraphToEps >(NodeTextsTraits(*this,x)); alpar@1073: } alpar@1085: template struct NodePsTextsTraits : public T { alpar@1085: const X &_nodePsTexts; alpar@1085: NodePsTextsTraits(const T &t,const X &x) : T(t), _nodePsTexts(x) {} alpar@1085: }; alpar@1085: ///Inserts a PostScript block to the nodes alpar@1085: alpar@1085: ///With this command it is possible to insert a verbatim PostScript alpar@1085: ///block to the nodes. alpar@1085: ///The PS current point will be moved to the centre of the node before alpar@1085: ///the PostScript block inserted. alpar@1085: /// alpar@1085: ///Before and after the block a newline character is inserted to you alpar@1085: ///don't have to bother with the separators. alpar@1085: /// alpar@1085: ///\param x must be a node map with type that can be pushed to a standard alpar@1085: ///ostream. alpar@1085: /// alpar@1085: ///\sa nodePsTextsPreamble() alpar@1085: ///\todo Offer the choise not to move to the centre but pass the coordinates alpar@1085: ///to the Postscript block inserted. alpar@1085: template GraphToEps > nodePsTexts(const X &x) alpar@1085: { alpar@1085: dontPrint=true; alpar@1085: _showNodePsText=true; alpar@1085: return GraphToEps >(NodePsTextsTraits(*this,x)); alpar@1085: } alpar@1085: template struct EdgeWidthsTraits : public T { alpar@1073: const X &_edgeWidths; alpar@1073: EdgeWidthsTraits(const T &t,const X &x) : T(t), _edgeWidths(x) {} alpar@1073: }; alpar@1073: ///Sets the map of the edge widths alpar@1073: alpar@1073: ///Sets the map of the edge widths alpar@1073: ///\param x must be a edge map with \c double (or convertible) values. alpar@1073: template GraphToEps > edgeWidths(const X &x) alpar@1073: { alpar@1073: dontPrint=true; alpar@1073: return GraphToEps >(EdgeWidthsTraits(*this,x)); alpar@1073: } alpar@1073: alpar@1073: template struct NodeColorsTraits : public T { alpar@1073: const X &_nodeColors; alpar@1073: NodeColorsTraits(const T &t,const X &x) : T(t), _nodeColors(x) {} alpar@1073: }; alpar@1073: ///Sets the map of the node colors alpar@1073: alpar@1073: ///Sets the map of the node colors alpar@1073: ///\param x must be a node map with \ref Color values. alpar@1073: template GraphToEps > alpar@1073: nodeColors(const X &x) alpar@1073: { alpar@1073: dontPrint=true; alpar@1073: return GraphToEps >(NodeColorsTraits(*this,x)); alpar@1073: } alpar@1178: template struct NodeTextColorsTraits : public T { alpar@1178: const X &_nodeTextColors; alpar@1178: NodeTextColorsTraits(const T &t,const X &x) : T(t), _nodeTextColors(x) {} alpar@1178: }; alpar@1178: ///Sets the map of the node text colors alpar@1178: alpar@1178: ///Sets the map of the node text colors alpar@1178: ///\param x must be a node map with \ref Color values. alpar@1178: template GraphToEps > alpar@1178: nodeTextColors(const X &x) alpar@1178: { alpar@1178: dontPrint=true; alpar@1178: _nodeTextColorType=CUST_COL; alpar@1178: return GraphToEps > alpar@1178: (NodeTextColorsTraits(*this,x)); alpar@1178: } alpar@1073: template struct EdgeColorsTraits : public T { alpar@1073: const X &_edgeColors; alpar@1073: EdgeColorsTraits(const T &t,const X &x) : T(t), _edgeColors(x) {} alpar@1073: }; alpar@1073: ///Sets the map of the edge colors alpar@1073: alpar@1073: ///Sets the map of the edge colors alpar@1073: ///\param x must be a edge map with \ref Color values. alpar@1073: template GraphToEps > alpar@1073: edgeColors(const X &x) alpar@1073: { alpar@1073: dontPrint=true; alpar@1073: return GraphToEps >(EdgeColorsTraits(*this,x)); alpar@1073: } alpar@1073: ///Sets a global scale factor for node sizes alpar@1073: alpar@1073: ///Sets a global scale factor for node sizes alpar@1073: /// alpar@1073: GraphToEps &nodeScale(double d) {_nodeScale=d;return *this;} alpar@1073: ///Sets a global scale factor for edge widths alpar@1073: alpar@1073: ///Sets a global scale factor for edge widths alpar@1073: /// alpar@1073: GraphToEps &edgeWidthScale(double d) {_edgeWidthScale=d;return *this;} alpar@1073: ///Sets a global scale factor for the whole picture alpar@1073: alpar@1073: ///Sets a global scale factor for the whole picture alpar@1073: /// alpar@1073: GraphToEps &scale(double d) {_scale=d;return *this;} alpar@1073: ///Sets the width of the border around the picture alpar@1073: alpar@1073: ///Sets the width of the border around the picture alpar@1073: /// alpar@1073: GraphToEps &border(double b) {_xBorder=_yBorder=b;return *this;} alpar@1073: ///Sets the width of the border around the picture alpar@1073: alpar@1073: ///Sets the width of the border around the picture alpar@1073: /// alpar@1073: GraphToEps &border(double x, double y) { alpar@1073: _xBorder=x;_yBorder=y;return *this; alpar@1073: } alpar@1073: ///Sets whether to draw arrows alpar@1073: alpar@1073: ///Sets whether to draw arrows alpar@1073: /// alpar@1073: GraphToEps &drawArrows(bool b=true) {_drawArrows=b;return *this;} alpar@1073: ///Sets the length of the arrowheads alpar@1073: alpar@1073: ///Sets the length of the arrowheads alpar@1073: /// alpar@1073: GraphToEps &arrowLength(double d) {_arrowLength*=d;return *this;} alpar@1073: ///Sets the width of the arrowheads alpar@1073: alpar@1073: ///Sets the width of the arrowheads alpar@1073: /// alpar@1073: GraphToEps &arrowWidth(double d) {_arrowWidth*=d;return *this;} alpar@1073: alpar@1103: ///Scales the drawing to fit to A4 page alpar@1103: alpar@1103: ///Scales the drawing to fit to A4 page alpar@1103: /// alpar@1103: GraphToEps &scaleToA4() {_scaleToA4=true;return *this;} alpar@1103: alpar@1073: ///Enables parallel edges alpar@1073: alpar@1073: ///Enables parallel edges alpar@1073: ///\todo Partially implemented alpar@1073: GraphToEps &enableParallel(bool b=true) {_enableParallel=b;return *this;} alpar@1073: alpar@1073: ///Sets the distance alpar@1073: alpar@1073: ///Sets the distance alpar@1073: /// alpar@1073: GraphToEps &parEdgeDist(double d) {_parEdgeDist*=d;return *this;} alpar@1073: alpar@1073: ///Hides the edges alpar@1073: alpar@1073: ///Hides the edges alpar@1073: /// alpar@1073: GraphToEps &hideEdges(bool b=true) {_showEdges=!b;return *this;} alpar@1073: ///Hides the nodes alpar@1073: alpar@1073: ///Hides the nodes alpar@1073: /// alpar@1073: GraphToEps &hideNodes(bool b=true) {_showNodes=!b;return *this;} alpar@1073: alpar@1073: ///Sets the size of the node texts alpar@1073: alpar@1073: ///Sets the size of the node texts alpar@1073: /// alpar@1073: GraphToEps &nodeTextSize(double d) {_nodeTextSize=d;return *this;} alpar@1178: alpar@1178: ///Sets the color of the node texts to be different from the node color alpar@1178: alpar@1178: ///Sets the color of the node texts to be as different from the node color alpar@1178: ///as it is possible alpar@1178: /// alpar@1178: GraphToEps &distantColorNodeTexts() alpar@1178: {_nodeTextColorType=DIST_COL;return *this;} alpar@1178: ///Sets the color of the node texts to be black or white and always visible. alpar@1178: alpar@1178: ///Sets the color of the node texts to be black or white according to alpar@1178: ///which is more alpar@1178: ///different from the node color alpar@1178: /// alpar@1178: GraphToEps &distantBWNodeTexts() alpar@1178: {_nodeTextColorType=DIST_BW;return *this;} alpar@1178: alpar@1085: ///Gives a preamble block for node Postscript block. alpar@1085: alpar@1085: ///Gives a preamble block for node Postscript block. alpar@1085: /// alpar@1085: ///\sa nodePsTexts() alpar@1085: GraphToEps & nodePsTextsPreamble(const char *str) { alpar@1085: _nodePsTextsPreamble=s ;return *this; alpar@1085: } alpar@1073: ///Sets whether the the graph is undirected alpar@1073: alpar@1073: ///Sets whether the the graph is undirected alpar@1073: /// alpar@1073: GraphToEps &undir(bool b=true) {_undir=b;return *this;} alpar@1073: ///Sets whether the the graph is directed alpar@1073: alpar@1073: ///Sets whether the the graph is directed. alpar@1073: ///Use it to show the undirected edges as a pair of directed ones. alpar@1073: GraphToEps &bidir(bool b=true) {_undir=!b;return *this;} alpar@1086: alpar@1108: ///Sets the title. alpar@1108: alpar@1108: ///Sets the title of the generated image, alpar@1108: ///namely it inserts a %%Title: DSC field to the header of alpar@1108: ///the EPS file. alpar@1108: GraphToEps &title(const std::string &t) {_title=t;return *this;} alpar@1108: ///Sets the copyright statement. alpar@1108: alpar@1108: ///Sets the copyright statement of the generated image, alpar@1108: ///namely it inserts a %%Copyright: DSC field to the header of alpar@1108: ///the EPS file. alpar@1108: ///\todo Multiline copyright notice could be supported. alpar@1108: GraphToEps ©right(const std::string &t) {_copyright=t;return *this;} alpar@1108: alpar@1086: protected: alpar@1086: bool isInsideNode(xy p, double r,int t) alpar@1086: { alpar@1086: switch(t) { alpar@1086: case CIRCLE: alpar@1086: return p.normSquare()<=r*r; alpar@1086: case SQUARE: alpar@1086: return p.x<=r&&p.x>=-r&&p.y<=r&&p.y>=-r; alpar@1088: case DIAMOND: alpar@1088: return p.x+p.y<=r && p.x-p.y<=r && -p.x+p.y<=r && -p.x-p.y<=r; alpar@1086: } alpar@1086: return false; alpar@1086: } alpar@1086: alpar@1086: public: alpar@1091: ~GraphToEps() { } alpar@1091: alpar@1091: ///Draws the graph. alpar@1091: alpar@1091: ///Like other functions using alpar@1091: ///\ref named-templ-func-param "named template parameters", alpar@1091: ///this function calles the algorithm itself, i.e. in this case alpar@1091: ///it draws the graph. alpar@1091: void run() { alpar@1073: if(dontPrint) return; alpar@1073: alpar@1073: os << "%!PS-Adobe-2.0 EPSF-2.0\n"; alpar@1108: if(_title.size()>0) os << "%%Title: " << _title << '\n'; alpar@1108: if(_copyright.size()>0) os << "%%Copyright: " << _copyright << '\n'; alpar@1107: // << "%%Copyright: XXXX\n" alpar@1108: os << "%%Creator: LEMON GraphToEps function\n"; alpar@1108: alpar@1108: { alpar@1108: char cbuf[50]; alpar@1108: timeval tv; alpar@1108: gettimeofday(&tv, 0); alpar@1108: ctime_r(&tv.tv_sec,cbuf); alpar@1108: os << "%%CreationDate: " << cbuf; alpar@1108: } alpar@1107: ///\todo: Chech whether the graph is empty. alpar@1073: BoundingBox bb; alpar@1073: for(NodeIt n(g);n!=INVALID;++n) { alpar@1073: double ns=_nodeSizes[n]*_nodeScale; alpar@1073: xy p(ns,ns); alpar@1073: bb+=p+_coords[n]; alpar@1073: bb+=-p+_coords[n]; alpar@1073: } alpar@1108: if(_scaleToA4) alpar@1108: os <<"%%BoundingBox: 0 0 596 842\n%%DocumentPaperSizes: a4\n"; alpar@1108: else os << "%%BoundingBox: " alpar@1108: << bb.left()* _scale-_xBorder << ' ' alpar@1108: << bb.bottom()*_scale-_yBorder << ' ' alpar@1108: << bb.right()* _scale+_xBorder << ' ' alpar@1108: << bb.top()* _scale+_yBorder << '\n'; alpar@1108: alpar@1107: os << "%%EndComments\n"; alpar@1107: alpar@1073: //x1 y1 x2 y2 x3 y3 cr cg cb w alpar@1073: os << "/lb { setlinewidth setrgbcolor newpath moveto\n" alpar@1073: << " 4 2 roll 1 index 1 index curveto stroke } bind def\n"; alpar@1073: os << "/l { setlinewidth setrgbcolor newpath moveto lineto stroke } bind def\n"; alpar@1086: //x y r alpar@1073: os << "/c { newpath dup 3 index add 2 index moveto 0 360 arc closepath } bind def\n"; alpar@1086: //x y r alpar@1086: os << "/sq { newpath 2 index 1 index add 2 index 2 index add moveto\n" alpar@1086: << " 2 index 1 index sub 2 index 2 index add lineto\n" alpar@1086: << " 2 index 1 index sub 2 index 2 index sub lineto\n" alpar@1086: << " 2 index 1 index add 2 index 2 index sub lineto\n" alpar@1086: << " closepath pop pop pop} bind def\n"; alpar@1088: //x y r alpar@1088: os << "/di { newpath 2 index 1 index add 2 index moveto\n" alpar@1088: << " 2 index 2 index 2 index add lineto\n" alpar@1088: << " 2 index 1 index sub 2 index lineto\n" alpar@1088: << " 2 index 2 index 2 index sub lineto\n" alpar@1088: << " closepath pop pop pop} bind def\n"; alpar@1073: // x y r cr cg cb alpar@1089: os << "/nc { 0 0 0 setrgbcolor 5 index 5 index 5 index c fill\n" alpar@1089: << " setrgbcolor " << 1+_nodeBorderQuotient << " div c fill\n" alpar@1073: << " } bind def\n"; alpar@1089: os << "/nsq { 0 0 0 setrgbcolor 5 index 5 index 5 index sq fill\n" alpar@1089: << " setrgbcolor " << 1+_nodeBorderQuotient << " div sq fill\n" alpar@1086: << " } bind def\n"; alpar@1089: os << "/ndi { 0 0 0 setrgbcolor 5 index 5 index 5 index di fill\n" alpar@1089: << " setrgbcolor " << 1+_nodeBorderQuotient << " div di fill\n" alpar@1088: << " } bind def\n"; alpar@1073: os << "/arrl " << _arrowLength << " def\n"; alpar@1073: os << "/arrw " << _arrowWidth << " def\n"; alpar@1073: // l dx_norm dy_norm alpar@1073: os << "/lrl { 2 index mul exch 2 index mul exch rlineto pop} bind def\n"; alpar@1073: //len w dx_norm dy_norm x1 y1 cr cg cb alpar@1073: os << "/arr { setrgbcolor /y1 exch def /x1 exch def /dy exch def /dx exch def\n" alpar@1073: << " /w exch def /len exch def\n" alpar@1073: // << " 0.1 setlinewidth x1 y1 moveto dx len mul dy len mul rlineto stroke" alpar@1073: << " newpath x1 dy w 2 div mul add y1 dx w 2 div mul sub moveto\n" alpar@1073: << " len w sub arrl sub dx dy lrl\n" alpar@1073: << " arrw dy dx neg lrl\n" alpar@1073: << " dx arrl w add mul dy w 2 div arrw add mul sub\n" alpar@1073: << " dy arrl w add mul dx w 2 div arrw add mul add rlineto\n" alpar@1073: << " dx arrl w add mul neg dy w 2 div arrw add mul sub\n" alpar@1073: << " dy arrl w add mul neg dx w 2 div arrw add mul add rlineto\n" alpar@1073: << " arrw dy dx neg lrl\n" alpar@1073: << " len w sub arrl sub neg dx dy lrl\n" alpar@1073: << " closepath fill } bind def\n"; alpar@1073: os << "/cshow { 2 index 2 index moveto dup stringwidth pop\n" alpar@1073: << " neg 2 div fosi .35 mul neg rmoveto show pop pop} def\n"; alpar@1073: alpar@1073: os << "\ngsave\n"; alpar@1103: if(_scaleToA4) alpar@1103: if(bb.height()>bb.width()) { alpar@1103: double sc= min((A4HEIGHT-2*A4BORDER)/bb.height(), alpar@1103: (A4WIDTH-2*A4BORDER)/bb.width()); alpar@1103: os << ((A4WIDTH -2*A4BORDER)-sc*bb.width())/2 + A4BORDER << ' ' alpar@1103: << ((A4HEIGHT-2*A4BORDER)-sc*bb.height())/2 + A4BORDER << " translate\n" alpar@1103: << sc << " dup scale\n" alpar@1103: << -bb.left() << ' ' << -bb.bottom() << " translate\n"; alpar@1103: } alpar@1103: else { alpar@1103: //\todo Verify centering alpar@1103: double sc= min((A4HEIGHT-2*A4BORDER)/bb.width(), alpar@1103: (A4WIDTH-2*A4BORDER)/bb.height()); alpar@1103: os << ((A4WIDTH -2*A4BORDER)-sc*bb.height())/2 + A4BORDER << ' ' alpar@1103: << ((A4HEIGHT-2*A4BORDER)-sc*bb.width())/2 + A4BORDER << " translate\n" alpar@1103: << sc << " dup scale\n90 rotate\n" alpar@1103: << -bb.left() << ' ' << -bb.top() << " translate\n"; alpar@1103: } alpar@1103: else if(_scale!=1.0) os << _scale << " dup scale\n"; alpar@1073: alpar@1085: if(_showEdges) { alpar@1085: os << "%Edges:\ngsave\n"; alpar@1073: if(_enableParallel) { alpar@1073: std::vector el; alpar@1073: for(EdgeIt e(g);e!=INVALID;++e) alpar@1178: if((!_undir||g.source(e)0) alpar@1178: el.push_back(e); alpar@1073: sort(el.begin(),el.end(),edgeLess(g)); alpar@1073: alpar@1073: typename std::vector::iterator j; alpar@1073: for(typename std::vector::iterator i=el.begin();i!=el.end();i=j) { alpar@1073: for(j=i+1;j!=el.end()&&isParallel(*i,*j);++j) ; alpar@1073: alpar@1073: double sw=0; alpar@1073: for(typename std::vector::iterator e=i;e!=j;++e) alpar@1073: sw+=_edgeWidths[*e]*_edgeWidthScale+_parEdgeDist; alpar@1073: sw-=_parEdgeDist; alpar@1073: sw/=-2.0; alpar@1085: xy dvec(_coords[g.target(*i)]-_coords[g.source(*i)]); alpar@1085: double l=sqrt(dvec.normSquare()); alpar@1085: xy d(dvec/l); alpar@1085: xy m; alpar@1085: // m=xy(_coords[g.target(*i)]+_coords[g.source(*i)])/2.0; alpar@1085: alpar@1085: // m=xy(_coords[g.source(*i)])+ alpar@1085: // dvec*(double(_nodeSizes[g.source(*i)])/ alpar@1085: // (_nodeSizes[g.source(*i)]+_nodeSizes[g.target(*i)])); alpar@1085: alpar@1085: m=xy(_coords[g.source(*i)])+ alpar@1085: d*(l+_nodeSizes[g.source(*i)]-_nodeSizes[g.target(*i)])/2.0; alpar@1085: alpar@1073: for(typename std::vector::iterator e=i;e!=j;++e) { alpar@1073: sw+=_edgeWidths[*e]*_edgeWidthScale/2.0; alpar@1085: xy mm=m+rot(d)*sw/.75; alpar@1073: if(_drawArrows) { alpar@1086: int node_shape; alpar@1073: xy s=_coords[g.source(*e)]; alpar@1073: xy t=_coords[g.target(*e)]; alpar@1073: double rn=_nodeSizes[g.target(*e)]*_nodeScale; alpar@1086: node_shape=_nodeShapes[g.target(*e)]; alpar@1085: Bezier3 bez(s,mm,mm,t); alpar@1073: double t1=0,t2=1; alpar@1087: for(int i=0;i apoint=bez((t1+t2)/2); alpar@1086: rn = _arrowLength+_edgeWidths[*e]*_edgeWidthScale; alpar@1073: rn*=rn; alpar@1086: t2=(t1+t2)/2;t1=0; alpar@1087: for(int i=0;irn) t1=(t1+t2)/2; alpar@1073: else t2=(t1+t2)/2; alpar@1073: xy linend=bez((t1+t2)/2); alpar@1073: bez=bez.before((t1+t2)/2); alpar@1086: // rn=_nodeSizes[g.source(*e)]*_nodeScale; alpar@1086: // node_shape=_nodeShapes[g.source(*e)]; alpar@1086: // t1=0;t2=1; alpar@1087: // for(int i=0;i dd(rot(linend-apoint)); alpar@1089: dd*=(.5*_edgeWidths[*e]*_edgeWidthScale+_arrowWidth)/ alpar@1073: sqrt(dd.normSquare()); alpar@1073: os << "newpath " << psOut(apoint) << " moveto " alpar@1073: << psOut(linend+dd) << " lineto " alpar@1073: << psOut(linend-dd) << " lineto closepath fill\n"; alpar@1073: } alpar@1073: else { alpar@1073: os << _coords[g.source(*e)].x << ' ' alpar@1073: << _coords[g.source(*e)].y << ' ' alpar@1085: << mm.x << ' ' << mm.y << ' ' alpar@1073: << _coords[g.target(*e)].x << ' ' alpar@1073: << _coords[g.target(*e)].y << ' ' alpar@1073: << _edgeColors[*e].getR() << ' ' alpar@1073: << _edgeColors[*e].getG() << ' ' alpar@1073: << _edgeColors[*e].getB() << ' ' alpar@1073: << _edgeWidths[*e]*_edgeWidthScale << " lb\n"; alpar@1073: } alpar@1073: sw+=_edgeWidths[*e]*_edgeWidthScale/2.0+_parEdgeDist; alpar@1073: } alpar@1073: } alpar@1073: } alpar@1073: else for(EdgeIt e(g);e!=INVALID;++e) alpar@1178: if((!_undir||g.source(e)0) alpar@1073: if(_drawArrows) { alpar@1073: xy d(_coords[g.target(e)]-_coords[g.source(e)]); alpar@1087: double rn=_nodeSizes[g.target(e)]*_nodeScale; alpar@1087: int node_shape=_nodeShapes[g.target(e)]; alpar@1087: double t1=0,t2=1; alpar@1087: for(int i=0;istd::cout alpar@1073: /// alpar@1091: ///This function also has a lot of alpar@1091: ///\ref named-templ-func-param "named parameters", alpar@1073: ///they are declared as the members of class \ref GraphToEps. The following alpar@1073: ///example shows how to use these parameters. alpar@1073: ///\code alpar@1178: /// graphToEps(g,os).scale(10).coords(coords) alpar@1073: /// .nodeScale(2).nodeSizes(sizes) alpar@1091: /// .edgeWidthScale(.4).run(); alpar@1073: ///\endcode alpar@1091: ///\warning Don't forget to put the \ref GraphToEps::run() "run()" alpar@1091: ///to the end of the parameter list. alpar@1073: ///\sa GraphToEps alpar@1073: ///\sa graphToEps(G &g, char *file_name) alpar@1073: template alpar@1073: GraphToEps > alpar@1073: graphToEps(G &g, std::ostream& os=std::cout) alpar@1073: { alpar@1073: return alpar@1073: GraphToEps >(DefaultGraphToEpsTraits(g,os)); alpar@1073: } alpar@1073: alpar@1073: ///Generates an EPS file from a graph alpar@1073: alpar@1103: ///\ingroup misc alpar@1073: ///This function does the same as alpar@1073: ///\ref graphToEps(G &g,std::ostream& os) alpar@1073: ///but it writes its output into the file \c file_name alpar@1073: ///instead of a stream. alpar@1073: ///\sa graphToEps(G &g, std::ostream& os) alpar@1073: template alpar@1073: GraphToEps > alpar@1107: graphToEps(G &g,const char *file_name) alpar@1073: { alpar@1073: return GraphToEps > alpar@1073: (DefaultGraphToEpsTraits(g,*new std::ofstream(file_name),true)); alpar@1073: } alpar@1073: alpar@1073: } //END OF NAMESPACE LEMON alpar@1073: alpar@1073: #endif // LEMON_GRAPH_TO_EPS_H