[Lemon-commits] [lemon_svn] alpar: r2109 - hugo/trunk/lemon

[Lemon SVN]

Author: alpar
Date: Thu Jul 28 21:05:45 2005
New Revision: 2109

Modified:
   hugo/trunk/lemon/graph_to_eps.h

Log:
Edge width and node size autoscaling added.

Modified: hugo/trunk/lemon/graph_to_eps.h
==============================================================================
--- hugo/trunk/lemon/graph_to_eps.h	(original)
+++ hugo/trunk/lemon/graph_to_eps.h	Thu Jul 28 21:05:45 2005
@@ -234,6 +234,9 @@
     { DIST_COL=0, DIST_BW=1, CUST_COL=2, SAME_COL=3 } _nodeTextColorType;
   ConstMap<typename Graph::Node,Color > _nodeTextColors;
 
+  bool _autoNodeScale;
+  bool _autoEdgeWidthScale;
+
   ///Constructor
 
   ///Constructor
@@ -258,7 +261,9 @@
     _showNodePsText(false), _nodePsTexts(false), _nodePsTextsPreamble(0),
     _undir(false),
     _pleaseRemoveOsStream(_pros), _scaleToA4(false),
-    _nodeTextColorType(SAME_COL), _nodeTextColors(Color(0,0,0))
+    _nodeTextColorType(SAME_COL), _nodeTextColors(Color(0,0,0)),
+    _autoNodeScale(false),
+    _autoEdgeWidthScale(false)
   {}
 };
 
@@ -324,6 +329,10 @@
   using T::DIST_BW;
   using T::_nodeTextColorType;
   using T::_nodeTextColors;
+
+  using T::_autoNodeScale;
+  using T::_autoEdgeWidthScale;
+
   // dradnats ++C eht yb deriuqer si ti eveileb t'naC
 
   typedef typename T::Graph Graph;
@@ -551,18 +560,51 @@
   }
   ///Sets a global scale factor for node sizes
 
-  ///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.
   GraphToEps<T> &nodeScale(double d) {_nodeScale=d;return *this;}
-  ///Sets a global scale factor for edge widths
+  ///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;
+  }
   ///Sets a global scale factor for edge widths
+
+  /// Sets a global scale factor for edge widths.
   ///
+  /// If edgeWidths() is not given, this function simply sets the edge
+  /// widths to \c d.  If edgeWidths() is given, but
+  /// autoEdgeWidthScale() is not, then the edge withs given by
+  /// edgeWidths() will be multiplied by the value \c d.
+  /// If both edgeWidths() and autoEdgeWidthScale() are used, then the
+  /// edge withs will be scaled in such a way that the greatest width will be
+  /// equal to \c d.
   GraphToEps<T> &edgeWidthScale(double d) {_edgeWidthScale=d;return *this;}
+  ///Turns on/off the automatic edge width scaling.
+
+  ///Turns on/off the automatic edge width scaling.
+  ///
+  ///\sa edgeWidthScale()
+  ///
+  GraphToEps<T> &autoEdgeWidthScale(bool b=true) {
+    _autoEdgeWidthScale=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
 
@@ -714,6 +756,28 @@
       ctime_r(&tv.tv_sec,cbuf);
       os << "%%CreationDate: " << cbuf;
     }
+
+    if (_autoEdgeWidthScale) {
+      double max_w=0;
+      for(EdgeIt e(g);e!=INVALID;++e)
+	max_w=std::max(double(_edgeWidths[e]),max_w);
+      ///\todo better 'epsilon' would be nice here.
+      if(max_w>1e-9) {
+	_edgeWidthScale/=max_w;
+      }
+    }
+
+    if (_autoNodeScale) {
+      double max_s=0;
+      for(NodeIt n(g);n!=INVALID;++n)
+	max_s=std::max(double(_nodeSizes[n]),max_s);
+      ///\todo better 'epsilon' would be nice here.
+      if(max_s>1e-9) {
+	_nodeScale/=max_s;
+      }
+    }
+
+
     BoundingBox<double> bb;
     ///\bug: Chech whether the graph is empty.
     for(NodeIt n(g);n!=INVALID;++n) {
@@ -725,6 +789,7 @@
     if (bb.empty()) {
       bb = BoundingBox<double>(xy<double>(0,0));
     }
+    
     if(_scaleToA4)
       os <<"%%BoundingBox: 0 0 596 842\n%%DocumentPaperSizes: a4\n";
     else os << "%%BoundingBox: "