Reference documentation for deal.II version 9.4.0
\(\newcommand{\dealvcentcolon}{\mathrel{\mathop{:}}}\) \(\newcommand{\dealcoloneq}{\dealvcentcolon\mathrel{\mkern-1.2mu}=}\) \(\newcommand{\jump}[1]{\left[\!\left[ #1 \right]\!\right]}\) \(\newcommand{\average}[1]{\left\{\!\left\{ #1 \right\}\!\right\}}\)
block_info.cc
Go to the documentation of this file.
1// ---------------------------------------------------------------------
2//
3// Copyright (C) 2009 - 2020 by the deal.II authors
4//
5// This file is part of the deal.II library.
6//
7// The deal.II library is free software; you can use it, redistribute
8// it, and/or modify it under the terms of the GNU Lesser General
9// Public License as published by the Free Software Foundation; either
10// version 2.1 of the License, or (at your option) any later version.
11// The full text of the license can be found in the file LICENSE.md at
12// the top level directory of deal.II.
13//
14// ---------------------------------------------------------------------
15
19
20#include <deal.II/fe/fe.h>
21#include <deal.II/fe/fe_tools.h>
22
24
26
27
28template <int dim, int spacedim>
29void
31 bool levels_only,
32 bool active_only)
33{
34 Assert(dof.has_hp_capabilities() == false,
36
37 if (!levels_only && dof.has_active_dofs())
38 {
39 const std::vector<types::global_dof_index> sizes =
41 bi_global.reinit(sizes);
42 }
43
44 if (!active_only && dof.has_level_dofs())
45 {
46 std::vector<std::vector<types::global_dof_index>> sizes(
48 std::vector<types::global_dof_index>(dof.get_fe().n_blocks()));
49
51 levels.resize(sizes.size());
52
53 for (unsigned int i = 0; i < sizes.size(); ++i)
54 levels[i].reinit(sizes[i]);
55 }
56}
57
58
59
60template <int dim, int spacedim>
61void
63{
64 Assert(dof.has_hp_capabilities() == false,
66
67 const FiniteElement<dim, spacedim> & fe = dof.get_fe();
68 std::vector<types::global_dof_index> sizes(fe.n_blocks());
69
70 base_elements.resize(fe.n_blocks());
71
72 for (unsigned int i = 0; i < base_elements.size(); ++i)
73 base_elements[i] = fe.block_to_base_index(i).first;
74
77 bi_local.reinit(sizes);
78}
79
80// explicit instantiations
81#include "block_info.inst"
82
void reinit(const unsigned int n_blocks, const size_type n_elements_per_block)
std::vector< types::global_dof_index > local_renumbering
Definition: block_info.h:212
std::vector< BlockIndices > levels
The multilevel block structure.
Definition: block_info.h:196
BlockIndices bi_global
The block structure of the global system.
Definition: block_info.h:192
BlockIndices bi_local
The block structure of the cell systems.
Definition: block_info.h:201
std::vector< unsigned int > base_elements
Definition: block_info.h:206
void initialize_local(const DoFHandler< dim, spacedim > &)
Initialize block structure on cells and compute renumbering between cell dofs and block cell dofs.
Definition: block_info.cc:62
void initialize(const DoFHandler< dim, spacedim > &, bool levels_only=false, bool active_only=false)
Fill the object with values describing block structure of the DoFHandler.
Definition: block_info.cc:30
const FiniteElement< dim, spacedim > & get_fe(const unsigned int index=0) const
bool has_active_dofs() const
const Triangulation< dim, spacedim > & get_triangulation() const
bool has_hp_capabilities() const
bool has_level_dofs() const
unsigned int n_dofs_per_cell() const
unsigned int n_blocks() const
std::pair< unsigned int, unsigned int > block_to_base_index(const unsigned int block) const
unsigned int n_levels() const
#define DEAL_II_NAMESPACE_OPEN
Definition: config.h:442
#define DEAL_II_NAMESPACE_CLOSE
Definition: config.h:443
#define Assert(cond, exc)
Definition: exceptions.h:1473
std::vector< types::global_dof_index > count_dofs_per_fe_block(const DoFHandler< dim, spacedim > &dof, const std::vector< unsigned int > &target_block=std::vector< unsigned int >())
Definition: dof_tools.cc:1980
void compute_block_renumbering(const FiniteElement< dim, spacedim > &fe, std::vector< types::global_dof_index > &renumbering, std::vector< types::global_dof_index > &block_data, bool return_start_indices=true)
void count_dofs_per_block(const DoFHandler< dim, spacedim > &dof_handler, std::vector< std::vector< types::global_dof_index > > &dofs_per_block, std::vector< unsigned int > target_block={})
Definition: mg_tools.cc:1188
void reinit(MatrixBlock< MatrixType > &v, const BlockSparsityPattern &p)
Definition: matrix_block.h:618