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188 | /* *****************************************************************
MESQUITE -- The Mesh Quality Improvement Toolkit
Copyright 2010 Sandia National Laboratories. Developed at the
University of Wisconsin--Madison under SNL contract number
624796. The U.S. Government and the University of Wisconsin
retain certain rights to 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
(2010) [email protected]
***************************************************************** */
/** \file UntangleWrapper.cpp
* \brief
* \author Jason Kraftcheck
*/
#include "Mesquite.hpp"
#include "UntangleWrapper.hpp"
#include "MeshUtil.hpp"
#include "SimpleStats.hpp"
#include "MsqError.hpp"
#include "LambdaConstant.hpp"
#include "IdealShapeTarget.hpp"
#include "TQualityMetric.hpp"
#include "PMeanPTemplate.hpp"
#include "TerminationCriterion.hpp"
#include "SteepestDescent.hpp"
#include "ConjugateGradient.hpp"
#include "QualityAssessor.hpp"
#include "InstructionQueue.hpp"
#include "ElementPMeanP.hpp"
#include "Instruction.hpp"
#include "TUntangleBeta.hpp"
#include "TUntangleMu.hpp"
#include "TSizeNB1.hpp"
#include "TShapeSize2DNB1.hpp"
#include "TShapeSize3DNB1.hpp"
#include "TMixed.hpp"
#include <memory>
const int NUM_INNER_ITERATIONS = 1;
const double DEFAULT_MOVEMENT_FACTOR = 0.001;
const bool CULLING_DEFAULT = true;
const bool JACOBI_DEFAULT = false;
namespace MBMesquite
{
UntangleWrapper::UntangleWrapper()
: qualityMetric( SIZE ), maxTime( -1 ), movementFactor( DEFAULT_MOVEMENT_FACTOR ), metricConstant( -1 ),
maxIterations( -1 ), doCulling( CULLING_DEFAULT ), doJacobi( JACOBI_DEFAULT )
{
}
UntangleWrapper::UntangleWrapper( UntangleMetric m )
: qualityMetric( m ), maxTime( -1 ), movementFactor( DEFAULT_MOVEMENT_FACTOR ), metricConstant( -1 ),
maxIterations( -1 ), doCulling( CULLING_DEFAULT ), doJacobi( JACOBI_DEFAULT )
{
}
UntangleWrapper::~UntangleWrapper() {}
void UntangleWrapper::set_untangle_metric( UntangleMetric metric )<--- The function 'set_untangle_metric' is never used.
{
qualityMetric = metric;
}
void UntangleWrapper::set_metric_constant( double value )
{
metricConstant = value;
}
void UntangleWrapper::set_cpu_time_limit( double seconds )
{
maxTime = seconds;
}
void UntangleWrapper::set_outer_iteration_limit( int maxIt )<--- The function 'set_outer_iteration_limit' is never used.
{
maxIterations = maxIt;
}
void UntangleWrapper::set_vertex_movement_limit_factor( double f )
{
movementFactor = f;
}
void UntangleWrapper::run_wrapper( MeshDomainAssoc* mesh_and_domain,
ParallelMesh* pmesh,
Settings* settings,
QualityAssessor* qa,
MsqError& err )
{
Instruction::initialize_vertex_byte( mesh_and_domain, settings, err );MSQ_ERRRTN( err );
Mesh* mesh = mesh_and_domain->get_mesh();
// get some global mesh properties
SimpleStats edge_len, lambda;
std::unique_ptr< MeshUtil > tool( new MeshUtil( mesh, settings ) );
tool->edge_length_distribution( edge_len, err );MSQ_ERRRTN( err );
tool->lambda_distribution( lambda, err );MSQ_ERRRTN( err );
tool.reset( 0 );
// get target metrics from user perferences
TSizeNB1 mu_size;
TShapeSize2DNB1 mu_shape_2d;
TShapeSize3DNB1 mu_shape_3d;
TMixed mu_shape( &mu_shape_2d, &mu_shape_3d );
std::unique_ptr< TMetric > mu;
if( qualityMetric == BETA )
{
double beta = metricConstant;
if( beta < 0 ) beta = ( lambda.average() * lambda.average() ) / 20;
// std::cout << "beta= " << beta << std::endl;
mu.reset( new TUntangleBeta( beta ) );
}
else
{
TMetric* sub = 0;
if( qualityMetric == SIZE )
sub = &mu_size;
else
sub = &mu_shape;
if( metricConstant >= 0 )
mu.reset( new TUntangleMu( sub, metricConstant ) );
else
mu.reset( new TUntangleMu( sub ) );
}
// define objective function
IdealShapeTarget base_target;
LambdaConstant target( lambda.average(), &base_target );
TQualityMetric metric_0( &target, mu.get() );
ElementPMeanP metric( 1.0, &metric_0 );
PMeanPTemplate objfunc( 1.0, &metric );
// define termination criterion
double eps = movementFactor * ( edge_len.average() - edge_len.standard_deviation() );
TerminationCriterion inner( "<type:untangle_inner>", TerminationCriterion::TYPE_INNER ),
outer( "<type:untangle_outer>", TerminationCriterion::TYPE_OUTER );
outer.add_untangled_mesh();
if( doCulling )
inner.cull_on_absolute_vertex_movement( eps );
else
outer.add_absolute_vertex_movement( eps );
if( maxTime > 0.0 ) outer.add_cpu_time( maxTime );
inner.add_iteration_limit( NUM_INNER_ITERATIONS );
if( maxIterations > 0 ) outer.add_iteration_limit( maxIterations );
// construct solver
SteepestDescent solver( &objfunc );
solver.use_element_on_vertex_patch();
solver.set_inner_termination_criterion( &inner );
solver.set_outer_termination_criterion( &outer );
if( doJacobi )
solver.do_jacobi_optimization();
else
solver.do_gauss_optimization();
// Run
qa->add_quality_assessment( &metric );
InstructionQueue q;
q.add_quality_assessor( qa, err );MSQ_ERRRTN( err );
q.set_master_quality_improver( &solver, err );MSQ_ERRRTN( err );
q.add_quality_assessor( qa, err );MSQ_ERRRTN( err );
q.run_common( mesh_and_domain, pmesh, settings, err );MSQ_ERRRTN( err );
}
} // namespace MBMesquite
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