#include <deal.II/grid/grid_tools_cache.h>

Inheritance diagram for GridTools::Cache< dim, spacedim >:

Public Member Functions
	Cache (const Triangulation< dim, spacedim > &tria, const Mapping< dim, spacedim > &mapping=StaticMappingQ1< dim, spacedim >::mapping)

	~Cache ()

void	mark_for_update (const CacheUpdateFlags &flags=update_all)

const std::vector< std::set< typename Triangulation< dim, spacedim >::active_cell_iterator > > &	get_vertex_to_cell_map () const

const std::vector< std::vector< Tensor< 1, spacedim > > > &	get_vertex_to_cell_centers_directions () const

const std::map< unsigned int, Point< spacedim > > &	get_used_vertices () const

const Triangulation< dim, spacedim > &	get_triangulation () const

const Mapping< dim, spacedim > &	get_mapping () const

const KDTree< spacedim > &	get_vertex_kdtree () const

Public Member Functions inherited from Subscriptor
	Subscriptor ()

	Subscriptor (const Subscriptor &)

	Subscriptor (Subscriptor &&) noexcept

virtual	~Subscriptor ()

Subscriptor &	operator= (const Subscriptor &)

Subscriptor &	operator= (Subscriptor &&) noexcept

void	subscribe (const char *identifier=nullptr) const

void	unsubscribe (const char *identifier=nullptr) const

unsigned int	n_subscriptions () const

void	list_subscribers () const

template<class Archive >
void	serialize (Archive &ar, const unsigned int version)

Private Attributes
CacheUpdateFlags	update_flags

SmartPointer< const Triangulation< dim, spacedim >, Cache< dim, spacedim > >	tria

SmartPointer< const Mapping< dim, spacedim >, Cache< dim, spacedim > >	mapping

std::vector< std::set< typename Triangulation< dim, spacedim >::active_cell_iterator > >	vertex_to_cells

std::vector< std::vector< Tensor< 1, spacedim > > >	vertex_to_cell_centers

KDTree< spacedim >	vertex_kdtree

std::map< unsigned int, Point< spacedim > >	used_vertices

boost::signals2::connection	tria_signal

Additional Inherited Members
Static Public Member Functions inherited from Subscriptor
static ::ExceptionBase &	ExcInUse (int arg1, std::string arg2, std::string arg3)

static ::ExceptionBase &	ExcNoSubscriber (std::string arg1, std::string arg2)

Detailed Description

template<int dim, int spacedim = dim>
class GridTools::Cache< dim, spacedim >

A class that caches computationally intensive information about a Triangulation.

This class attaches a signal to the Triangulation passed at construction time to keep track about refinement changes, and allows the user to query some of the data structures constructed using functions in the GridTools namespace which are computed only once, and then cached inside this class for faster access whenever the triangulation has not changed.

Notice that this class only notices if the underlying Triangulation has changed due to a Triangulation::Signals::any_change() signal being triggered.

If the triangulation changes for other reasons, for example because you use it in conjunction with a MappingQEulerian object that sees the vertices through its own transformation, or because you manually change some vertex locations, then some of the structures in this class become obsolete, and you will have to mark them as outdated, by calling the method mark_for_update() manually.

Author: Luca Heltai, 2017.

Definition at line 109 of file grid_tools.h.

Constructor & Destructor Documentation

◆ Cache()

template<int dim, int spacedim>

GridTools::Cache< dim, spacedim >::Cache	(	const Triangulation< dim, spacedim > &	tria,
		const Mapping< dim, spacedim > &	mapping = `StaticMappingQ1<dim,spacedim>::mapping`
	)

Constructor.

If you provide the optional mapping argument, then this is used whenever a mapping is required.

Parameters

tria	The triangulation for which to store information
mapping	The mapping to use when computing cached objects

Definition at line 25 of file grid_tools_cache.cc.

◆ ~Cache()

template<int dim, int spacedim>

GridTools::Cache< dim, spacedim >::~Cache ( )

Destructor.

Definition at line 39 of file grid_tools_cache.cc.

Member Function Documentation

◆ mark_for_update()

template<int dim, int spacedim>

void GridTools::Cache< dim, spacedim >::mark_for_update ( const CacheUpdateFlags & flags = update_all )

Make sure that the objects marked for update are recomputed during subsequent calls to the get_* functions defined in this class.

Notice that no work is performed when you call this function. The actual data structures are computed the next time you call the corresponding get_* method.

Parameters

flags What to mark for update

Definition at line 50 of file grid_tools_cache.cc.

◆ get_vertex_to_cell_map()

template<int dim, int spacedim>

const std::vector< std::set< typename Triangulation< dim, spacedim >::active_cell_iterator > > & GridTools::Cache< dim, spacedim >::get_vertex_to_cell_map ( ) const

Return the cached vertex_to_cell_map as computed by GridTools::vertex_to_cell_map().

Definition at line 59 of file grid_tools_cache.cc.

◆ get_vertex_to_cell_centers_directions()

template<int dim, int spacedim>

const std::vector< std::vector< Tensor< 1, spacedim > > > & GridTools::Cache< dim, spacedim >::get_vertex_to_cell_centers_directions ( ) const

Return the cached vertex_to_cell_centers_directions as computed by GridTools::vertex_to_cell_centers_directions().

Definition at line 73 of file grid_tools_cache.cc.

◆ get_used_vertices()

template<int dim, int spacedim>

const std::map< unsigned int, Point< spacedim > > & GridTools::Cache< dim, spacedim >::get_used_vertices ( ) const

Return the cached map of used vertices, as computed by GridTools::extract_used_vertices().

Definition at line 88 of file grid_tools_cache.cc.

◆ get_triangulation()

template<int dim, int spacedim>

const Triangulation< dim, spacedim > & GridTools::Cache< dim, spacedim >::get_triangulation ( ) const

inline

Return a reference to the stored triangulation.

Definition at line 193 of file grid_tools_cache.h.

◆ get_mapping()

template<int dim, int spacedim>

const Mapping< dim, spacedim > & GridTools::Cache< dim, spacedim >::get_mapping ( ) const

inline

Return a reference to the stored mapping.

Definition at line 202 of file grid_tools_cache.h.

◆ get_vertex_kdtree()

template<int dim, int spacedim>

const KDTree< spacedim > & GridTools::Cache< dim, spacedim >::get_vertex_kdtree ( ) const

Return the cached vertex_kdtree object, constructed with the vertices of the stored triangulation.

Definition at line 102 of file grid_tools_cache.cc.

Member Data Documentation

◆ update_flags

template<int dim, int spacedim = dim>

CacheUpdateFlags GridTools::Cache< dim, spacedim >::update_flags

mutableprivate

Keep track of what needs to be updated next.

Definition at line 141 of file grid_tools_cache.h.

◆ tria

template<int dim, int spacedim = dim>

SmartPointer<const Triangulation<dim,spacedim>, Cache<dim,spacedim> > GridTools::Cache< dim, spacedim >::tria

private

A pointer to the Triangulation.

Definition at line 147 of file grid_tools_cache.h.

◆ mapping

template<int dim, int spacedim = dim>

SmartPointer<const Mapping<dim,spacedim>, Cache<dim,spacedim> > GridTools::Cache< dim, spacedim >::mapping

private

Mapping to use when computing on the Triangulation.

Definition at line 153 of file grid_tools_cache.h.

◆ vertex_to_cells

template<int dim, int spacedim = dim>

std::vector< std::set<typename Triangulation<dim,spacedim>::active_cell_iterator> > GridTools::Cache< dim, spacedim >::vertex_to_cells

mutableprivate

Store vertex to cell map information, as generated by GridTools::vertex_to_cell_map()

Definition at line 161 of file grid_tools_cache.h.

◆ vertex_to_cell_centers

template<int dim, int spacedim = dim>

std::vector<std::vector<Tensor<1,spacedim> > > GridTools::Cache< dim, spacedim >::vertex_to_cell_centers

mutableprivate

Store vertex to cell center directions, as generated by GridTools::vertex_to_cell_centers_directions().

Definition at line 167 of file grid_tools_cache.h.

◆ vertex_kdtree

template<int dim, int spacedim = dim>

KDTree<spacedim> GridTools::Cache< dim, spacedim >::vertex_kdtree

mutableprivate

A KDTree object constructed with the vertices of the triangulation.

Definition at line 173 of file grid_tools_cache.h.

◆ used_vertices

template<int dim, int spacedim = dim>

std::map<unsigned int, Point<spacedim> > GridTools::Cache< dim, spacedim >::used_vertices

mutableprivate

Store the used vertices of the Triangulation, as generated by GridTools::extract_used_vertices().

Definition at line 180 of file grid_tools_cache.h.

◆ tria_signal

template<int dim, int spacedim = dim>

boost::signals2::connection GridTools::Cache< dim, spacedim >::tria_signal

private

Storage for the status of the triangulation signal.

Definition at line 185 of file grid_tools_cache.h.

The documentation for this class was generated from the following files:

deal.II/grid/grid_tools.h
deal.II/grid/grid_tools_cache.h
source/grid/grid_tools_cache.cc

Public Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

template<int dim, int spacedim = dim> class GridTools::Cache< dim, spacedim >

Constructor & Destructor Documentation

◆ Cache()

◆ ~Cache()

Member Function Documentation

◆ mark_for_update()

◆ get_vertex_to_cell_map()

◆ get_vertex_to_cell_centers_directions()

◆ get_used_vertices()

◆ get_triangulation()

◆ get_mapping()

◆ get_vertex_kdtree()

Member Data Documentation

◆ update_flags

◆ tria

◆ mapping

◆ vertex_to_cells

◆ vertex_to_cell_centers

◆ vertex_kdtree

◆ used_vertices

◆ tria_signal

template<int dim, int spacedim = dim>
class GridTools::Cache< dim, spacedim >