inks/AddQualityMetric.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 "AddQualityMetric.hpp"
#include "QualityMetric.hpp"
#include "Vector3D.hpp"
#include "MsqDebug.hpp"

using namespace Mesquite;

AddQualityMetric::AddQualityMetric(QualityMetric* qm1, QualityMetric* qm2, MsqError &err)
  : qualMetric1( qm1 ),
    qualMetric2( qm2 )
{
  if(qm1 == NULL || qm2 == NULL){
    MSQ_SETERR(err)("AddQualityMetric constructor passed NULL pointer.",
                     MsqError::INVALID_ARG);
    return;
  }
  feasible=qm1->get_feasible_constraint();
  if(qm2->get_feasible_constraint())
    feasible=qm2->get_feasible_constraint();
  int n_flag=qm1->get_negate_flag();
  if(n_flag!=qm2->get_negate_flag()){
    MSQ_DBGOUT(1) << "AddQualityMetric is being used to compose a metric "
                  << "that should be minimized\n with a metric that should be "
                  << "maximized.";
    set_negate_flag(1);
  }
  else{
    set_negate_flag(n_flag);
  }

  // Checks that metrics are of the same type 
  if ( qm1->get_metric_type() != qm2->get_metric_type() ) {
    MSQ_SETERR(err)("Cannot add a vertex-based QM with an element-based QM.",
                    MsqError::INVALID_STATE);
    return;
  } else {
    set_metric_type(qm1->get_metric_type());
  }
  
  set_name("Composite Add");
}

bool AddQualityMetric::evaluate_element(PatchData& pd,
                                        MsqMeshEntity *element,
                                        double &value,
                                        MsqError &err)
{
  bool valid_flag;
  double metric1, metric2;  
  valid_flag=qualMetric1->evaluate_element(pd, element, metric1, err); MSQ_ERRZERO(err);
  if(!valid_flag)
    return false;
  valid_flag=qualMetric2->evaluate_element(pd, element, metric2, err); MSQ_ERRZERO(err);
  value = metric1+metric2;
    //if the first metric was invalid we have already returned
    //so we return whatever the flag was on the second metric.
  return valid_flag;
}

bool AddQualityMetric::evaluate_vertex(PatchData& pd,
                                       MsqVertex* vert,
                                       double &value,
                                       MsqError& err)
{
  bool valid_flag;
  double metric1, metric2;  
  valid_flag=qualMetric1->evaluate_vertex(pd, vert, metric1, err); MSQ_ERRZERO(err);
  if(!valid_flag)
    return false;
  valid_flag=qualMetric2->evaluate_vertex(pd, vert, metric2, err); MSQ_ERRZERO(err);
  value = metric1+metric2;
    //if the first metric was invalid we have already returned
    //so we return whatever the flag was on the second metric.
  return valid_flag;
}