inks/CompositeOFScalarAdd.cpp

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/* ***************************************************************** 
    MESQUITE -- The Mesh Quality Improvement Toolkit

    Copyright 2004 Sandia Corporation and Argonne National
    Laboratory.  Under the terms of Contract DE-AC04-94AL85000 
    with Sandia Corporation, the U.S. Government retains certain 
    rights in this software.

    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 2.1 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 
    (lgpl.txt) along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
    diachin2@llnl.gov, djmelan@sandia.gov, mbrewer@sandia.gov, 
    pknupp@sandia.gov, tleurent@mcs.anl.gov, tmunson@mcs.anl.gov      
   
  ***************************************************************** */
#include <math.h>
#include "CompositeOFScalarAdd.hpp"
#include "PatchData.hpp"
#include "MsqTimer.hpp"
using namespace Mesquite;


CompositeOFScalarAdd::CompositeOFScalarAdd(double alp, ObjectiveFunction* Obj1){
  set_quality_metric(Obj1->get_quality_metric());
  objFunc=Obj1;
  mAlpha=alp;
  set_negate_flag(1);
  set_gradient_type(ObjectiveFunction::ANALYTICAL_GRADIENT);
}


//Michael:  need to clean up here
CompositeOFScalarAdd::~CompositeOFScalarAdd(){

}

bool CompositeOFScalarAdd::concrete_evaluate(PatchData &patch, double &fval,
                                             MsqError &err){
    //if invalid return false without calculating fval.
  bool b = objFunc->evaluate(patch, fval, err);
  if( MSQ_CHKERR(err) || !b ){
    fval = 0.0;
    return false;
  }
  
  fval+=mAlpha;
  return true;
}

msq_std::list<QualityMetric*> CompositeOFScalarAdd::get_quality_metric_list(){
  return objFunc->get_quality_metric_list();
}

bool CompositeOFScalarAdd::compute_analytical_gradient(PatchData &patch,
                                                       Vector3D *const &grad,
                                                       double &OF_val,
                                                       MsqError &err,
                                                       size_t array_size)
{
  MSQ_FUNCTION_TIMER( "CompositeOFScalarAdd::compute_analytical_gradient" );
  bool rval=objFunc->compute_gradient(patch, grad, OF_val,err, array_size); MSQ_ERRZERO(err);
  OF_val+=mAlpha;
  return rval;
}