Changeset 1051:4ebe32765b48 in lemon-0.x

Timestamp:

01/05/05 11:14:37 (19 years ago)

Author:

Alpar Juttner

Branch:

default

Phase:

public

Convert:

svn:c9d7d8f5-90d6-0310-b91f-818b3a526b0e/lemon/trunk@1445

Message:

graphToEps is now able to write to any ostream.

File:

• src/work/alpar/graph_to_eps.cc (modified) (12 diffs)

src/work/alpar/graph_to_eps.cc

@@ +1 @@
+#include <iostream>
 #include<math.h>
+
 #include<lemon/xy.h>
 #include<lemon/maps.h>
@@ -50 +52 @@
 
   const Graph &g;
+
+  std::ostream& os;
+  
   ConstMap<typename Graph::Node,xy<double> > _coords;
   ConstMap<typename Graph::Node,double > _nodeSizes;
@@ -71 +76 @@
 
   ///Constructor
-  ///\param _g is a reference to the underlying graph
-  DefaultGraphToEpsTraits(const G &_g) :
-    g(_g), _coords(xy<double>(1,1)), _nodeSizes(1.0),
+  ///\param _g is a reference to the graph to be printed
+  ///\param _os is a reference to the output stream.
+  ///By default it is <tt>std::cout</tt>
+  DefaultGraphToEpsTraits(const G &_g,std::ostream& _os=std::cout) :
+    g(_g), os(_os),
+    _coords(xy<double>(1,1)), _nodeSizes(1.0),
     _nodeColors(Color(1,1,1)), _edgeColors(Color(0,0,0)),
     _edgeWidths(1), _edgeWidthScale(0.3),
@@ -215 +223 @@
     if(dontPrint) return;
     
-    cout << "%!PS-Adobe-2.0 EPSF-2.0\n";
+    os << "%!PS-Adobe-2.0 EPSF-2.0\n";
     //\todo: Chech whether the graph is empty.
     BoundingBox<double> bb;
@@ -224 +232 @@
       bb+=-p+_coords[n];
       }
-    cout << "%%BoundingBox: "
+    os << "%%BoundingBox: "
          << bb.left()*  _scale-_xBorder << ' '
          << bb.bottom()*_scale-_yBorder << ' '
@@ -230 +238 @@
          << bb.top()*   _scale+_yBorder << '\n';
     //x1 y1 x2 y2 cr cg cb w
-    cout << "/l { setlinewidth setrgbcolor newpath moveto lineto stroke } bind def\n";
-    cout << "/c { newpath dup 3 index add 2 index moveto 0 360 arc } bind def\n";
+    os << "/l { setlinewidth setrgbcolor newpath moveto lineto stroke } bind def\n";
+    os << "/c { newpath dup 3 index add 2 index moveto 0 360 arc } bind def\n";
     // x y r cr cg cb
-    cout << "/n { setrgbcolor 2 index 2 index 2 index c fill\n"
+    os << "/n { setrgbcolor 2 index 2 index 2 index c fill\n"
          << "     0 0 0 setrgbcolor dup "
          << _nodeBorderQuotient << " mul setlinewidth "
          << 1+_nodeBorderQuotient/2 << " div c stroke\n"
          << "   } bind def\n";
-    cout << "/arrl " << _arrowLength << " def\n";
-    cout << "/arrw " << _arrowWidth << " def\n";
+    os << "/arrl " << _arrowLength << " def\n";
+    os << "/arrw " << _arrowWidth << " def\n";
     // l dx_norm dy_norm
-    cout << "/lrl { 2 index mul exch 2 index mul exch rlineto pop} bind def\n";
+    os << "/lrl { 2 index mul exch 2 index mul exch rlineto pop} bind def\n";
     //len w dx_norm dy_norm x1 y1 cr cg cb
-    cout << "/arr { setrgbcolor /y1 exch def /x1 exch def /dy exch def /dx exch def\n"
+    os << "/arr { setrgbcolor /y1 exch def /x1 exch def /dy exch def /dx exch def\n"
          << "       /w exch def /len exch def\n"
       //         << "       0.1 setlinewidth x1 y1 moveto dx len mul dy len mul rlineto stroke"
@@ -256 +264 @@
          << "       len w sub arrl sub neg dx dy lrl\n"
          << "       closepath fill } bind def\n";
-    cout << "\ngsave\n";
-    if(_scale!=1.0) cout << _scale << " dup scale\n";
-    cout << "%Edges:\ngsave\n";
+    os << "\ngsave\n";
+    if(_scale!=1.0) os << _scale << " dup scale\n";
+    os << "%Edges:\ngsave\n";
     for(NodeIt n(g);n!=INVALID;++n)
       for(OutEdgeIt e(g,n);e!=INVALID;++e)
@@ -267 +275 @@
           xy<double> x1(d*_nodeScale*_nodeSizes[g.source(e)]+
                         _coords[g.source(e)]);
-          cout << l-(_nodeSizes[g.source(e)]+
+          os << l-(_nodeSizes[g.source(e)]+
                      _nodeSizes[g.target(e)])*_nodeScale << ' '
                << _edgeWidths[e]*_edgeWidthScale << ' '
@@ -276 +284 @@
                << _edgeColors[e].getB() << " arr\n";
         }
-        else cout << _coords[g.source(e)].x << ' '
+        else os << _coords[g.source(e)].x << ' '
                   << _coords[g.source(e)].y << ' '
                   << _coords[g.target(e)].x << ' '
@@ -284 +292 @@
                   << _edgeColors[e].getB() << ' '
                   << _edgeWidths[e]*_edgeWidthScale << " l\n";
-    cout << "grestore\n%Nodes:\ngsave\n";
+    os << "grestore\n%Nodes:\ngsave\n";
     for(NodeIt n(g);n!=INVALID;++n)
-      cout << _coords[n].x << ' ' << _coords[n].y << ' '
+      os << _coords[n].x << ' ' << _coords[n].y << ' '
            << _nodeSizes[n]*_nodeScale << ' '
            << _nodeColors[n].getR() << ' '
            << _nodeColors[n].getG() << ' '
            << _nodeColors[n].getB() << " n\n"; 
-    cout << "grestore\ngrestore\n";
+    os << "grestore\ngrestore\n";
   } 
 };
@@ -300 +308 @@
 ///\ingroup misc
 ///Generates an EPS file from a graph.
+///\param g is a reference to the graph to be printed
+///\param os is a reference to the output stream.
+///By default it is <tt>std::cout</tt>
 ///
-///This function has a lot of \ref named-templ-param "named parameters",
+///This function also has a lot of \ref named-templ-param "named parameters",
 ///they are declared as the members of class \ref GraphToEps. The following
 ///example shows how to use these parameters.
@@ -311 +322 @@
 ///\sa GraphToEps
 template<class G>
-GraphToEps<DefaultGraphToEpsTraits<G> > graphToEps(G &g)
+GraphToEps<DefaultGraphToEpsTraits<G> > graphToEps(G &g,std::ostream& os=std::cout)
 {
   return GraphToEps<DefaultGraphToEpsTraits<G> >(DefaultGraphToEpsTraits<G>(g));