MOAB: Mesh Oriented datABase  (version 5.2.1)
ConditionNumberQualityMetric.hpp
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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 // -*- Mode : c++; tab-width: 3; c-tab-always-indent: t; indent-tabs-mode: nil; c-basic-offset: 3
00028 // -*-
00029 
00030 /*! \file ConditionNumberQualityMetric.hpp
00031 
00032 Header file for the MBMesquite::ConditionNumberQualityMetric class
00033 
00034   \author Michael Brewer
00035   \date   2002-06-19
00036  */
00037 
00038 #ifndef ConditionNumberQualityMetric_hpp
00039 #define ConditionNumberQualityMetric_hpp
00040 
00041 #include "Mesquite.hpp"
00042 #include "ElementQM.hpp"
00043 #include "AveragingQM.hpp"
00044 
00045 namespace MBMesquite
00046 {
00047 /*! \class ConditionNumberQualityMetric
00048   \brief Computes the condition number of given element.
00049 
00050   The metric does not use the sample point functionality or the
00051   compute_weighted_jacobian.  It evaluates the metric at
00052   the element vertices, and uses the isotropic ideal element.
00053   It does require a feasible region, and the metric needs
00054   to be minimized.
00055 */
00056 class ConditionNumberQualityMetric : public ElementQM, public AveragingQM
00057 {
00058   public:
00059     MESQUITE_EXPORT ConditionNumberQualityMetric();
00060 
00061     //! virtual destructor ensures use of polymorphism during destruction
00062     MESQUITE_EXPORT virtual ~ConditionNumberQualityMetric() {}
00063 
00064     MESQUITE_EXPORT virtual std::string get_name() const;
00065 
00066     //! 1 if metric should be minimized, -1 if metric should be maximized.
00067     MESQUITE_EXPORT virtual int get_negate_flag() const;
00068 
00069     MESQUITE_EXPORT virtual bool evaluate( PatchData& pd, size_t handle, double& value, MsqError& err );
00070 };
00071 
00072 }  // namespace MBMesquite
00073 
00074 #endif  // ConditionNumberQualityMetric_hpp
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