Coarsens a Cartesian mesh by 2. More...

#include <arcane/cartesianmesh/CartesianMeshCoarsening.h>

Public Member Functions
void	createCoarseCells ()
	Coarsens the initial mesh by 2.
ConstArrayView< Int32 >	refinedCells (Int32 index) const
	List of localIds() of refined cells for the parent cell at index index.
ConstArrayView< Int32 >	coarseCells () const
	List of localIds() of coarse cells.
void	removeRefinedCells ()
	Removes refined cells.
Public Member Functions inherited from Arcane::TraceAccessor
	TraceAccessor (ITraceMng *m)
	Constructs an accessor via the trace manager m.
	TraceAccessor (const TraceAccessor &rhs)
	Copy constructor.
TraceAccessor &	operator= (const TraceAccessor &rhs)
	Copy assignment operator.
virtual	~TraceAccessor ()
	Frees resources.
ITraceMng *	traceMng () const
	Trace manager.
TraceMessage	info () const
	Flow for an information message.
TraceMessage	pinfo () const
	Flow for a parallel information message.
TraceMessage	info (char category) const
	Flow for an information message of a given category.
TraceMessage	pinfo (char category) const
	Flow for a parallel information message of a given category.
TraceMessage	info (bool v) const
	Flow for an information message.
TraceMessage	warning () const
	Flow for a warning message.
TraceMessage	pwarning () const
TraceMessage	error () const
	Flow for an error message.
TraceMessage	perror () const
TraceMessage	log () const
	Flow for a log message.
TraceMessage	plog () const
	Flow for a log message.
TraceMessage	logdate () const
	Flow for a log message preceded by the date.
TraceMessage	fatal () const
	Flow for a fatal error message.
TraceMessage	pfatal () const
	Flow for a parallel fatal error message.
TraceMessageDbg	debug (Trace::eDebugLevel=Trace::Medium) const
	Flow for a debug message.
Trace::eDebugLevel	configDbgLevel () const
	Debug level of the configuration file.
TraceMessage	info (Int32 verbose_level) const
	Flow for an information message of a given level.
TraceMessage	linfo () const
	Flow for an information message with the local information level of this instance.
TraceMessage	linfo (Int32 relative_level) const
	Flow for an information message with the local information level of this instance.
void	fatalMessage (const StandaloneTraceMessage &o) const

Additional Inherited Members
Protected Member Functions inherited from Arcane::TraceAccessor
void	_setLocalVerboseLevel (Int32 v)
Int32	_localVerboseLevel () const

Detailed Description

Coarsens a Cartesian mesh by 2.

Deprecated: This class is obsolete. The version 2 implementation (CartesianMeshCoarsening2) must be used.

This class allows coarsening a Cartesian mesh. Instances of this class are created via ICartesianMesh::createCartesianMeshCoarsening().

The initial mesh must be Cartesian and must not have patches.

The mesh must be an AMR mesh (IMesh::isAmrActivated()==true).

The number of cells in each dimension must be a multiple of 2 as well as the number of local cells in each subdomain.

The coarsening is done in two phases:

createCoarseCells(), which creates the coarse cells. After calling this method, it is possible to use coarseCells() to get the list of coarse cells and refinedCells() to get for each coarse cell the list of corresponding refined cells.
removeRefinedCells(), which removes cells other than the coarse cells. After this call, there is only a Cartesian mesh with half the number of cells in each direction. It will then be possible to call the refinement methods to create additional levels.

ICartesianMesh* cartesian_mesh = ...;
Ref<CartesianMeshCoarsening> coarser = m_cartesian_mesh->createCartesianMeshCoarsening();
IMesh* mesh = cartesian_mesh->mesh();
CellInfoListView cells(mesh->cellFamily());
coarser->createCoarseCells();
Int32 index = 0;
for( Int32 cell_lid : coarser->coarseCells()){
  Cell cell = cells[cell_lid];
  info() << "Test: CoarseCell= " << ItemPrinter(cell);
  ConstArrayView<Int32> sub_cells(coarser->refinedCells(index));
  ++index;
  for( Int32 sub_lid : sub_cells )
    info() << "SubCell=" << ItemPrinter(cells[sub_lid]);
}
coarser->removeRefinedCells();

Definition at line 78 of file CartesianMeshCoarsening.h.

Member Function Documentation

◆ coarseCells()

ConstArrayView< Int32 > Arcane::CartesianMeshCoarsening::coarseCells ( ) const

inline

List of localIds() of coarse cells.

This method is only valid after calling createCoarseCells().

Definition at line 113 of file CartesianMeshCoarsening.h.

◆ createCoarseCells()

void Arcane::CartesianMeshCoarsening::createCoarseCells ( )

Coarsens the initial mesh by 2.

This method is collective.

List of the first child of each coarse cell

Definition at line 70 of file CartesianMeshCoarsening.cc.

References Arcane::Array< T >::add(), Arcane::MutableItemBase::addFlags(), ARCANE_FATAL, Arcane::IParallelMng::commRank(), ENUMERATE_, Arcane::ItemBase::flags(), Arcane::CellDirectionMng::globalNbCell(), Arcane::ItemFlags::II_UserMark1, Arcane::TraceAccessor::info(), Arcane::Item::itemBase(), Arcane::Cell::itemLocalId(), Arcane::IItemFamily::itemsUniqueIdToLocalId(), Arcane::Cell::level(), Arcane::ItemTypeInfo::localFace(), Arcane::Item::localId(), Arcane::String::localstr(), Arcane::math::max(), Arcane::Item::mutableItemBase(), Arcane::ItemTypeInfo::LocalFace::node(), Arcane::ItemWithNodes::node(), Arcane::IItemFamily::notifyItemsOwnerChanged(), Arcane::Item::owner(), Arcane::CellDirectionMng::ownNbCell(), Arcane::IParallelMng::reduce(), Arcane::MessagePassing::ReduceMax, Arcane::MutableItemBase::removeFlags(), Arcane::Array< T >::resize(), Arcane::MutableItemBase::setOwner(), Arcane::Item::typeInfo(), Arcane::Item::uniqueId(), Arcane::IItemFamily::view(), and Arcane::SimpleSVGMeshExporter::write().

◆ refinedCells()

ConstArrayView< Int32 > Arcane::CartesianMeshCoarsening::refinedCells ( Int32 index ) const

inline

List of localIds() of refined cells for the parent cell at index index.

This method is only valid after calling createCoarseCells().

In 2D, there are 4 refined cells per coarse cell. In 3D, there are 8.

Definition at line 104 of file CartesianMeshCoarsening.h.

◆ removeRefinedCells()

void Arcane::CartesianMeshCoarsening::removeRefinedCells ( )

Removes refined cells.

createCoarseCells() must be called beforehand.

Definition at line 282 of file CartesianMeshCoarsening.cc.

References Arcane::Array< T >::add(), ARCANE_FATAL, Arcane::MeshStats::dumpStats(), Arcane::IMeshModifier::endUpdate(), ENUMERATE_, Arcane::Item::isOwn(), Arcane::IMeshModifier::removeCells(), Arcane::IMeshModifier::setDynamic(), Arcane::TraceAccessor::traceMng(), and Arcane::IMeshModifier::updateGhostLayers().

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