MOAB: Mesh Oriented datABase  (version 5.2.1)
LambdaTarget.cpp
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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 LambdaTarget.cpp
00028  *  \brief
00029  *  \author Jason Kraftcheck
00030  */
00031 
00032 #include "Mesquite.hpp"
00033 #include "LambdaTarget.hpp"
00034 #include "MsqMatrix.hpp"
00035 #include "MsqError.hpp"
00036 
00037 namespace MBMesquite
00038 {
00039 
00040 LambdaTarget::LambdaTarget( TargetCalculator* lambda_source, TargetCalculator* composite_source )
00041     : lambdaSource( lambda_source ), compositeSource( composite_source )
00042 {
00043 }
00044 
00045 LambdaTarget::~LambdaTarget() {}
00046 
00047 bool LambdaTarget::get_3D_target( PatchData& pd, size_t element, Sample sample, MsqMatrix< 3, 3 >& W_out,
00048                                   MsqError& err )
00049 {
00050     bool valid = lambdaSource->get_3D_target( pd, element, sample, W_out, err );
00051     if( MSQ_CHKERR( err ) && !valid ) return false;
00052     double det1 = det( W_out );
00053 
00054     valid = compositeSource->get_3D_target( pd, element, sample, W_out, err );
00055     if( MSQ_CHKERR( err ) && !valid ) return false;
00056     double det2 = det( W_out );
00057 
00058     if( det2 < 1e-15 ) return false;
00059 
00060     W_out *= MBMesquite::cbrt( fabs( det1 / det2 ) );
00061     return true;
00062 }
00063 
00064 bool LambdaTarget::get_2D_target( PatchData& pd, size_t element, Sample sample, MsqMatrix< 2, 2 >& W_out,
00065                                   MsqError& err )
00066 {
00067     bool valid = lambdaSource->get_2D_target( pd, element, sample, W_out, err );
00068     if( MSQ_CHKERR( err ) && !valid ) return false;
00069     double det1 = det( W_out );
00070 
00071     valid = compositeSource->get_2D_target( pd, element, sample, W_out, err );
00072     if( MSQ_CHKERR( err ) && !valid ) return false;
00073     double det2 = det( W_out );
00074 
00075     if( det2 < 1e-15 ) return false;
00076 
00077     W_out *= sqrt( det1 / det2 );
00078     return true;
00079 }
00080 
00081 bool LambdaTarget::get_surface_target( PatchData& pd, size_t element, Sample sample, MsqMatrix< 3, 2 >& W_out,
00082                                        MsqError& err )
00083 {
00084     bool valid = lambdaSource->get_surface_target( pd, element, sample, W_out, err );
00085     if( MSQ_CHKERR( err ) && !valid ) return false;
00086     MsqVector< 3 > cross = W_out.column( 0 ) * W_out.column( 1 );
00087     double det1          = cross % cross;  // length squared
00088 
00089     valid = compositeSource->get_surface_target( pd, element, sample, W_out, err );
00090     if( MSQ_CHKERR( err ) && !valid ) return false;
00091     cross       = W_out.column( 0 ) * W_out.column( 1 );
00092     double det2 = cross % cross;  // length squared
00093 
00094     if( det2 < 1e-15 ) return false;
00095 
00096     W_out *= sqrt( sqrt( det1 / det2 ) );
00097     return true;
00098 }
00099 
00100 }  // namespace MBMesquite
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