EdgeAttributes.h

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/*
 * $Revision: 2027 $
 * 
 * last checkin:
 *   $Author: gutwenger $ 
 *   $Date: 2010-09-01 11:55:17 +0200 (Wed, 01 Sep 2010) $ 
 ***************************************************************/
 
#ifdef _MSC_VER
#pragma once
#endif

#ifndef OGDF_EDGE_ATTRIBUTES_H
#define OGDF_EDGE_ATTRIBUTES_H

#include <ogdf/basic/geometry.h>
#include <ogdf/basic/Graph.h>

namespace ogdf {

class OGDF_EXPORT EdgeAttributes
{
   //helping data structure that stores the graphical attributes of an edge
   //that are needed for the force-directed  algorithms.

   //outputstream for EdgeAttributes
   friend ostream &operator<< (ostream &,const EdgeAttributes &);
   
   //inputstream for EdgeAttributes
   friend istream &operator>> (istream &,EdgeAttributes &);
           
   public:
      
      EdgeAttributes();    //constructor
      ~EdgeAttributes();   //destructor
      
      void set_EdgeAttributes(double l,edge e_orig,edge e_sub)
      {
       length = l;
       e_original = e_orig;
       e_subgraph = e_sub;
      } 

      void set_length(double l) {length = l;}
      double get_length() const {return length;}


      //needed for the divide et impera step in FMMM      

      void set_original_edge (edge e) {e_original = e;}
      void set_subgraph_edge (edge e) {e_subgraph = e;} 
      edge get_original_edge() const {return e_original;}
      edge get_subgraph_edge() const {return e_subgraph;}

     //needed for the preprocessing step in FMMM (set/get_original_edge are needed, too)
     
     void set_copy_edge (edge e) {e_subgraph = e;} 
     edge get_copy_edge() const {return e_subgraph;}

     //needed for multilevel step

     void set_higher_level_edge (edge e) {e_subgraph = e;} 
     edge get_higher_level_edge() const {return e_subgraph;}
     bool is_moon_edge() const {return moon_edge;}
     void make_moon_edge() { moon_edge = true;}
     bool is_extra_edge() const {return extra_edge;}
     void make_extra_edge() { extra_edge = true;}
     void mark_as_normal_edge() {extra_edge = false;}
     void init_mult_values() { e_subgraph = NULL; moon_edge = false;}

   private:         
     double length;
     edge e_original;
     edge e_subgraph;     
     bool moon_edge; //indicates if this edge is associasted with a moon node
     bool extra_edge;//indicates if this edge is an extra edge that is added to
                     //enforce few edge crossings
};
}//namespace ogdf
#endif