MOAB: Mesh Oriented datABase  (version 5.2.1)
LInfTemplate.cpp
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00001 /* *****************************************************************
00002     MESQUITE -- The Mesh Quality Improvement Toolkit
00003 
00004     Copyright 2004 Sandia Corporation and Argonne National
00005     Laboratory.  Under the terms of Contract DE-AC04-94AL85000
00006     with Sandia Corporation, the U.S. Government retains certain
00007     rights in this software.
00008 
00009     This library is free software; you can redistribute it and/or
00010     modify it under the terms of the GNU Lesser General Public
00011     License as published by the Free Software Foundation; either
00012     version 2.1 of the License, or (at your option) any later version.
00013 
00014     This library is distributed in the hope that it will be useful,
00015     but WITHOUT ANY WARRANTY; without even the implied warranty of
00016     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00017     Lesser General Public License for more details.
00018 
00019     You should have received a copy of the GNU Lesser General Public License
00020     (lgpl.txt) along with this library; if not, write to the Free Software
00021     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00022 
00023     diachin2@llnl.gov, djmelan@sandia.gov, mbrewer@sandia.gov,
00024     pknupp@sandia.gov, tleurent@mcs.anl.gov, tmunson@mcs.anl.gov
00025 
00026   ***************************************************************** */
00027 /*!
00028   \file   LInfTemplate.cpp
00029   \brief
00030 
00031   This Objective Function is evaluated using an L-infinity norm.
00032   total=max (abs(x))
00033   \author Michael Brewer
00034   \date   2002-07-3
00035 */
00036 #include <math.h>
00037 #include "LInfTemplate.hpp"
00038 #include "QualityMetric.hpp"
00039 #include "MsqError.hpp"
00040 
00041 namespace MBMesquite
00042 {
00043 
00044 LInfTemplate::LInfTemplate( QualityMetric* qualitymetric ) : ObjectiveFunctionTemplate( qualitymetric ) {}
00045 
00046 // Michael:  need to clean up here
00047 LInfTemplate::~LInfTemplate() {}
00048 
00049 ObjectiveFunction* LInfTemplate::clone() const
00050 {
00051     return new LInfTemplate( get_quality_metric() );
00052 }
00053 
00054 void LInfTemplate::clear() {}
00055 
00056 bool LInfTemplate::evaluate( EvalType type, PatchData& pd, double& value_out, bool free, MsqError& err )
00057 {
00058     if( type != ObjectiveFunction::CALCULATE )
00059     {
00060         MSQ_SETERR( err )
00061         ( "LInfTemplate does not support block coodinate descent algoritms", MsqError::INVALID_STATE );
00062         return false;
00063     }
00064 
00065     QualityMetric* qm = get_quality_metric();
00066     qm->get_evaluations( pd, qmHandles, free, err );
00067     MSQ_ERRFALSE( err );
00068     const double negate = qm->get_negate_flag();
00069 
00070     // calculate OF value for just the patch
00071     std::vector< size_t >::const_iterator i;
00072     double value;
00073     value_out = -HUGE_VAL;
00074     for( i = qmHandles.begin(); i != qmHandles.end(); ++i )
00075     {
00076         bool result = qm->evaluate( pd, *i, value, err );
00077         if( MSQ_CHKERR( err ) || !result ) return false;
00078 
00079         value = negate * fabs( value );
00080         if( value > value_out ) value_out = value;
00081     }
00082 
00083     return true;
00084 }
00085 
00086 }  // namespace MBMesquite
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