/usr/include/deal.II/multigrid/mg_transfer_component.templates.h is in libdeal.ii-dev 8.4.2-2+b1.
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//
// Copyright (C) 2003 - 2015 by the deal.II authors
//
// This file is part of the deal.II library.
//
// The deal.II library is free software; you can use it, 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.
// The full text of the license can be found in the file LICENSE at
// the top level of the deal.II distribution.
//
// ---------------------------------------------------------------------
#ifndef dealii__mg_transfer_component_templates_h
#define dealii__mg_transfer_component_templates_h
#include <deal.II/lac/sparse_matrix.h>
#include <deal.II/grid/tria_iterator.h>
#include <deal.II/fe/fe.h>
#include <deal.II/lac/constraint_matrix.h>
#include <deal.II/multigrid/mg_base.h>
#include <deal.II/dofs/dof_accessor.h>
#include <deal.II/multigrid/mg_tools.h>
#include <deal.II/multigrid/mg_transfer_component.h>
#include <deal.II/numerics/data_out.h>
#include <algorithm>
#include <sstream>
#include <fstream>
DEAL_II_NAMESPACE_OPEN
/* --------------------- MGTransferSelect -------------- */
template <typename number>
template <int dim, typename number2, int spacedim>
void
MGTransferSelect<number>::copy_to_mg (
const DoFHandler<dim,spacedim> &mg_dof_handler,
MGLevelObject<Vector<number> > &dst,
const BlockVector<number2> &src) const
{
do_copy_to_mg (mg_dof_handler, dst, src.block(target_component[selected_component]));
}
template <typename number>
template <int dim, typename number2, int spacedim>
void
MGTransferSelect<number>::copy_to_mg (
const DoFHandler<dim,spacedim> &mg_dof_handler,
MGLevelObject<Vector<number> > &dst,
const Vector<number2> &src) const
{
do_copy_to_mg (mg_dof_handler, dst, src);
}
template <typename number>
template <int dim, typename number2, int spacedim>
void
MGTransferSelect<number>::copy_from_mg (
const DoFHandler<dim,spacedim> &mg_dof_handler,
BlockVector<number2> &dst,
const MGLevelObject<Vector<number> > &src) const
{
dst = 0;
do_copy_from_mg (mg_dof_handler,
dst.block(target_component[selected_component]), src);
if (constraints != 0)
constraints->condense(dst);
}
template <typename number>
template <int dim, typename number2, int spacedim>
void
MGTransferSelect<number>::copy_from_mg (
const DoFHandler<dim,spacedim> &mg_dof_handler,
Vector<number2> &dst,
const MGLevelObject<Vector<number> > &src) const
{
dst = 0;
do_copy_from_mg (mg_dof_handler, dst, src);
if (constraints != 0)
{
//If we were given constraints
//apply them to the dst that goes
//back now to the linear solver.
//Since constraints are globally
//defined create a global vector here
//and copy dst to the right component,
//apply the constraints then and copy
//the block back to dst.
const unsigned int n_blocks =
*std::max_element(target_component.begin(), target_component.end()) + 1;
std::vector<types::global_dof_index> dofs_per_block (n_blocks);
DoFTools::count_dofs_per_block (mg_dof_handler, dofs_per_block, target_component);
BlockVector<number> tmp;
tmp.reinit(n_blocks);
for (unsigned int b=0; b<n_blocks; ++b)
tmp.block(b).reinit(dofs_per_block[b]);
tmp.collect_sizes ();
tmp.block(target_component[selected_component]) = dst;
constraints->condense(tmp);
dst = tmp.block(target_component[selected_component]);
}
}
template <typename number>
template <int dim, typename number2, int spacedim>
void
MGTransferSelect<number>::copy_from_mg_add (
const DoFHandler<dim,spacedim> &mg_dof_handler,
BlockVector<number2> &dst,
const MGLevelObject<Vector<number> > &src) const
{
do_copy_from_mg_add (mg_dof_handler, dst, src);
}
template <typename number>
template <int dim, typename number2, int spacedim>
void
MGTransferSelect<number>::copy_from_mg_add (
const DoFHandler<dim,spacedim> &mg_dof_handler,
Vector<number2> &dst,
const MGLevelObject<Vector<number> > &src) const
{
do_copy_from_mg_add (mg_dof_handler, dst, src);
}
template <typename number>
template <int dim, class OutVector, int spacedim>
void
MGTransferSelect<number>::do_copy_from_mg (
const DoFHandler<dim,spacedim> &mg_dof_handler,
OutVector &dst,
const MGLevelObject<Vector<number> > &src) const
{
typename DoFHandler<dim,spacedim>::active_cell_iterator
level_cell = mg_dof_handler.begin_active();
const typename DoFHandler<dim,spacedim>::active_cell_iterator
endc = mg_dof_handler.end();
// traverse all cells and copy the
// data appropriately to the output
// vector
// Note that the level is increasing monotonically
dst = 0;
for (; level_cell != endc; ++level_cell)
{
const unsigned int level = level_cell->level();
typedef std::vector<std::pair<types::global_dof_index, unsigned int> >::const_iterator IT;
for (IT i=copy_to_and_from_indices[level].begin();
i != copy_to_and_from_indices[level].end(); ++i)
dst(i->first) = src[level](i->second);
}
}
template <typename number>
template <int dim, class OutVector, int spacedim>
void
MGTransferSelect<number>::do_copy_from_mg_add (
const DoFHandler<dim,spacedim> &mg_dof_handler,
OutVector &dst,
const MGLevelObject<Vector<number> > &src) const
{
const FiniteElement<dim> &fe = mg_dof_handler.get_fe();
const unsigned int dofs_per_cell = fe.dofs_per_cell;
std::vector<types::global_dof_index> global_dof_indices (dofs_per_cell);
std::vector<types::global_dof_index> level_dof_indices (dofs_per_cell);
typename DoFHandler<dim,spacedim>::active_cell_iterator
level_cell = mg_dof_handler.begin_active();
const typename DoFHandler<dim,spacedim>::active_cell_iterator
endc = mg_dof_handler.end();
// traverse all cells and copy the
// data appropriately to the output
// vector
// Note that the level is increasing monotonically
dst = 0;
for (; level_cell != endc; ++level_cell)
{
const unsigned int level = level_cell->level();
typedef std::vector<std::pair<types::global_dof_index, unsigned int> >::const_iterator IT;
for (IT i=copy_to_and_from_indices[level].begin();
i != copy_to_and_from_indices[level].end(); ++i)
dst(i->first) += src[level](i->second);
}
}
template <typename number>
std::size_t
MGTransferSelect<number>::memory_consumption () const
{
return sizeof(int) + MGTransferComponentBase::memory_consumption();
}
DEAL_II_NAMESPACE_CLOSE
#endif
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