# HG changeset patch
# User hegyi
# Date 1161003925 0
# Node ID 302d75b08b27879fbaf4589405905bcd53233293
# Parent  2cd447b0bd3a0aebc9be9ddb113c8151414a4774
Graph redesign starts with an initial kick of the first node.

diff -r 2cd447b0bd3a -r 302d75b08b27 graph_displayer_canvas.cc
--- a/graph_displayer_canvas.cc	Fri Oct 13 15:31:58 2006 +0000
+++ b/graph_displayer_canvas.cc	Mon Oct 16 13:05:25 2006 +0000
@@ -6,7 +6,7 @@
   nodetextmap(mainw.mapstorage.graph), displayed_graph(*(root()), 0, 0),
   isbutton(0), active_item(NULL), target_item(NULL), nodemap_to_edit(""),
   edgemap_to_edit(""), autoscale(true), zoomtrack(false), radius_size(20), edge_width(10),
-  iterations(20), attraction(0.05), propulsation(40000), mytab(mainw)
+  iterations(20), attraction(0.05), propulsation(40000), was_redesigned(false), mytab(mainw)
 {
   //base event handler is move tool
   actual_handler=signal_event().connect(sigc::mem_fun(*this, &GraphDisplayerCanvas::moveEventHandler), false);
@@ -255,7 +255,18 @@
 
 void GraphDisplayerCanvas::reDesignGraph()
 {
-  double min_dist=40;
+  double min_dist=20;
+  double init_vector_length=25;
+
+  if(!was_redesigned)
+    {
+      NodeIt i((mytab.mapstorage).graph);
+      double r=random();
+      dim2::Point<double> init(init_vector_length*sin(r),init_vector_length*cos(r));
+      moveNode(init.x, init.y, nodesmap[i], i);
+      was_redesigned=true;
+    }
+  
 
   //iteration counter
   for(int l=0;l<iterations;l++)
diff -r 2cd447b0bd3a -r 302d75b08b27 graph_displayer_canvas.h
--- a/graph_displayer_canvas.h	Fri Oct 13 15:31:58 2006 +0000
+++ b/graph_displayer_canvas.h	Mon Oct 16 13:05:25 2006 +0000
@@ -417,6 +417,13 @@
 
   ///Propulsation factor during graph design
   double propulsation;
+
+  ///Was redesign run on this graph already?
+  ///
+  ///If not, the layout will be modified randomly
+  ///to avoid frozen layout because of wrong
+  ///initial state
+  bool was_redesigned;
   
 private: