MOAB: Mesh Oriented datABase  (version 5.2.1)
TetDihedralWeight.hpp
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00001 /* *****************************************************************
00002     MESQUITE -- The Mesh Quality Improvement Toolkit
00003 
00004     Copyright 2009 Sandia National Laboratories.  Developed at the
00005     University of Wisconsin--Madison under SNL contract number
00006     624796.  The U.S. Government and the University of Wisconsin
00007     retain certain rights to 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     (2009) kraftche@cae.wisc.edu
00024 
00025   ***************************************************************** */
00026 
00027 /** \file TetDihedralWeight.hpp
00028  *  \brief
00029  *  \author Jason Kraftcheck
00030  */
00031 
00032 #ifndef MSQ_TET_DIHEDRAL_WEIGHT_HPP
00033 #define MSQ_TET_DIHEDRAL_WEIGHT_HPP
00034 
00035 #include "Mesquite.hpp"
00036 #include "WeightCalculator.hpp"
00037 
00038 namespace MBMesquite
00039 {
00040 
00041 class ReferenceMesh;
00042 
00043 /**\brief Calculate weight as a function of maximum dihedral angle
00044  *
00045  * \f$ c_k = 1/(1 + \exp(-0.4394*(d_max - mCutoff))) \f*
00046  */
00047 class TetDihedralWeight : public WeightCalculator
00048 {
00049   public:
00050     TetDihedralWeight( double cutoff = 135, double a = 0.4395 ) : refMesh( 0 ), mCutoff( cutoff ), mA( a ) {}
00051 
00052     TetDihedralWeight( ReferenceMesh* mesh, double cutoff = 135, double a = 0.4395 )
00053         : refMesh( mesh ), mCutoff( cutoff ), mA( a )
00054     {
00055     }
00056 
00057     /**\brief Get target metric weight
00058      *
00059      *\param pd      The current PatchData
00060      *\param element The index an element within the patch data.
00061      *\param sample  The sample point in the element.
00062      */
00063     virtual double get_weight( PatchData& pd, size_t element, Sample sample, MsqError& err );
00064 
00065   private:
00066     ReferenceMesh* refMesh;
00067     double mCutoff, mA;
00068 };
00069 
00070 }  // namespace MBMesquite
00071 
00072 #endif
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