// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-

// "two_opt_next.cpp"

// (c) OPAC Team, LIFL, January 2006

/* This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.
   
   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.
   
   You should have received a copy of the GNU Lesser General Public
   License along with this library; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
   
   Contact: paradiseo-help@lists.gforge.inria.fr
*/

#include "two_opt_next.h"
#include "node.h"

bool TwoOptNext :: operator () (TwoOpt & __move, const Route & __route) {

  if (__move.first == numNodes - 1 && __move.second == numNodes - 1)
    return false;
  
  else {
    
    __move.second ++;
    if (__move.second == numNodes) {
      
      __move.first ++;
      __move.second = __move.first;
    }
    return true ;
  }
}