/*------------------------------------------------------------------------------*/
/*  NOMAD - Nonlinear Optimization by Mesh Adaptive Direct search -             */
/*          version 3.8.1                                                       */
/*                                                                              */
/*  NOMAD - version 3.8.1 has been created by                                   */
/*                 Charles Audet        - Ecole Polytechnique de Montreal       */
/*                 Sebastien Le Digabel - Ecole Polytechnique de Montreal       */
/*                 Christophe Tribes    - Ecole Polytechnique de Montreal       */
/*                                                                              */
/*  The copyright of NOMAD - version 3.8.1 is owned by                          */
/*                 Sebastien Le Digabel - Ecole Polytechnique de Montreal       */
/*                 Christophe Tribes    - Ecole Polytechnique de Montreal       */
/*                                                                              */
/*  NOMAD v3 has been funded by AFOSR, Exxon Mobil, Hydro Québec, Rio Tinto     */
/*  and IVADO.                                                                  */
/*                                                                              */
/*  NOMAD v3 is a new version of NOMAD v1 and v2. NOMAD v1 and v2 were created  */
/*  and developed by Mark Abramson, Charles Audet, Gilles Couture, and John E.  */
/*  Dennis Jr., and were funded by AFOSR and Exxon Mobil.                       */
/*                                                                              */
/*  Contact information:                                                        */
/*    Ecole Polytechnique de Montreal - GERAD                                   */
/*    C.P. 6079, Succ. Centre-ville, Montreal (Quebec) H3C 3A7 Canada           */
/*    e-mail: nomad@gerad.ca                                                    */
/*    phone : 1-514-340-6053 #6928                                              */
/*    fax   : 1-514-340-5665                                                    */
/*                                                                              */
/*  This program 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 3 of the License, or (at your  */
/*  option) any later version.                                                  */
/*                                                                              */
/*  This program 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 program. If not, see <http://www.gnu.org/licenses/>.        */
/*                                                                              */
/*  You can find information on the NOMAD software at www.gerad.ca/nomad        */
/*------------------------------------------------------------------------------*/


/**
 \file   Phase_One_Evaluator.cpp
 \brief  NOMAD::Evaluator subclass for the phase one (implementation)
 \author Sebastien Le Digabel
 \date   2010-04-09
 \see    Phase_One_Evaluator.hpp
 */
#include "Phase_One_Evaluator.hpp"

/*------------------------------------------------------------------*/
/*         compute f(x) from the blackbox outputs of a point        */
/*              (special objective for MADS phase 1)                */
/*------------------------------------------------------------------*/
void NOMAD::Phase_One_Evaluator::compute_f ( NOMAD::Eval_Point & x ) const
{
    if ( x.get_bb_outputs().size() != _p.get_bb_nb_outputs() )
    {
        std::ostringstream err;
        err << "Phase_One_Evaluator::compute_f(x): "
        << "x has a wrong number of blackbox outputs ("
        << x.get_bb_outputs().size() <<  " != " << _p.get_bb_nb_outputs() << ")";
        throw NOMAD::Exception ( "Phase_One_Evaluator.cpp" , __LINE__ , err.str() );
    }
    
    // objective value for MADS phase 1: the squared sum of all EB constraint violations
    // (each EB constraint has been previously transformed into OBJ values):
    const std::list<int>               & index_obj = _p.get_index_obj();
    const std::list<int>::const_iterator end       = index_obj.end();
    const NOMAD::Point                 & bbo       = x.get_bb_outputs();
    NOMAD::Double                        h_min     = _p.get_h_min();
    NOMAD::Double                        sum       = 0.0;
    NOMAD::Double                        v;
    
    for ( std::list<int>::const_iterator it = index_obj.begin() ; it != end ; ++it )
    {
        v = bbo[*it];
        if ( v > h_min )
            sum += v.pow2();
    }
    
    x.set_f ( sum );
}
