Class which manages grid generation. More...

#include <MeshRefine.H>

Inheritance diagram for MeshRefine:

Public Member Functions
	MeshRefine ()
	default constructor – leaves object in an unusable state More...

	MeshRefine (const Box &a_baseDomain, const Vector< int > &a_refRatios, const Real a_fillRatio, const int a_blockFactor, const int a_bufferSize, const int a_maxSize)
	full constructor – leaves object in usable state More...

	MeshRefine (const ProblemDomain &a_baseDomain, const Vector< int > &a_refRatios, const Real a_fillRatio, const int a_blockFactor, const int a_bufferSize, const int a_maxSize)
	full constructor – leaves object in usable state More...

virtual	~MeshRefine ()
	destructor More...

void	define (const Box &a_baseDomain, const Vector< int > &a_refRatios, const Real a_fillRatio, const int a_blockFactor, const int a_bufferSize, const int a_maxSize)
	define function – size of RefRatios will define maximum number of levels More...

void	define (const ProblemDomain &a_baseDomain, const Vector< int > &a_refRatios, const Real a_fillRatio, const int a_blockFactor, const int a_bufferSize, const int a_maxSize)
	define function – size of RefRatios will define maximum number of levels More...

virtual int	regrid (Vector< Vector< Box > > &a_newmeshes, const IntVectSet &a_tags, const int a_baseLevel, const int a_topLevel, const Vector< Vector< Box > > &a_oldMeshes)
	create hierarchy of grids from a single level of tags More...

virtual int	regrid (Vector< Vector< Box > > &a_newmeshes, Vector< IntVectSet > &a_tags, const int a_baseLevel, const int a_topLevel, const Vector< Vector< Box > > &a_oldMeshes)
	create hierarchy of grids from tags at all levels More...

const Vector< int > &	refRatios () const
	returns vector of refinement ratios More...

Real	fillRatio () const
	returns fillRatio More...

int	blockFactor () const
	returns blocking factor More...

int	bufferSize () const
	returns proper nesting buffer size More...

int	maxSize () const
	returns maximum box size in any dimension – 0 means no limit More...

void	refRatios (const Vector< int > &a_nRefVect)
	sets vector of refinement ratios More...

void	fillRatio (const Real a_fill_ratio)
	sets fillRatio More...

void	blockFactor (const int a_block_factor)
	sets blocking factor More...

void	bufferSize (const int a_buffer_size)
	sets proper nesting buffer size More...

void	maxSize (const int a_max_size)
	sets maximum box size in any dimension – 0 means no limit More...

bool	isDefined () const
	has this object been defined properly? More...

void	granularity (int a_granularity)
	sets proper nesting region granularity. More...

virtual void	makeBoxes (Vector< Box > &a_mesh, const IntVectSet &a_tags, const IntVectSet &a_pnd, const ProblemDomain &a_domain, const int a_maxSize, const int a_totalBufferSize) const =0
	constructs a set of boxes which covers a set of tagged cells More...

void	setPNDMode (int a_mode)

Protected Member Functions
virtual void	computeLocalBlockFactors ()
	computes local blockFactors used internally to enforce the BlockFactor More...

bool	properlyNested (const Box &a_box, const ProblemDomain &a_domain, const IntVectSet &a_pnd, int a_totalBuffer) const

virtual void	makePNDs (Vector< IntVectSet > &a_pnds, Vector< int > &a_totalBufferSize, const int a_baseLevel, const int a_topLevel, const Vector< ProblemDomain > &a_domains, const IntVectSet &a_baseMesh, const Vector< int > &a_bufferSize) const
	Computes proper nesting domains. More...

virtual void	makePNDs (Vector< IntVectSet > &a_pnds, Vector< int > &a_totalBufferSize, const int a_baseLevel, const int a_topLevel, const Vector< ProblemDomain > &a_domains, const Vector< Box > &a_baseMesh, const Vector< int > &a_bufferSize) const

Protected Attributes
bool	m_isDefined

Vector< ProblemDomain >	m_vectDomains

Vector< IntVectSet >	m_pnds

int	m_lastBase

int	m_lastTop

int	m_lastBuffer

Vector< int >	m_nRefVect

Real	m_fillRatio

int	m_blockFactor

Vector< int >	m_level_blockfactors

int	m_bufferSize

int	m_maxSize

int	m_granularity

int	m_PNDMode

Detailed Description

Class which manages grid generation.

This class manages grid generation from sets of tagged cells. It is designed to be a pure virtual base class from which another class may be derived with a specific grid-generation algorithm (for example, the BRMeshRefine class).

There are two ways grids can be defined based on tagged cells. one takes a single IntVectSet of tags defined on the BaseLevel mesh and uses that set of tags for every level to be refined; the other takes a Vector<IntVectSet> of tags defined on all the mesh levels to be refined and uses those.

Long Description:

Create new meshes based on tagged cells on a range of levels of a mesh hierarchy. Each level of tagged cells is used to generate a new mesh at the next finer level. The finest level in the output mesh will be one level higher than the top of the range of levels given as input. As a special case, use the same tags (appropriately refined) for all levels.

Usage:

Call the regrid functions after computing error estimates and tagging cells. To add a new mesh level, set TopLevel to the index of the finest level in the existing mesh and define tags on the finest level. To keep the existing number of mesh levels, set TopLevel to one less than the index of the finest level and don't define any tags on the finest level. If a single IntVectSet of tags is passed (instead of a Vector<IntVectSet>) then the same tags (properly refined) will be used for all the new meshes up to level TopLevel+1. In any case, the meshes at levels BaseLevel and below are not modified. The output argument newmeshes will be reallocated to the necessary size before being used. When this function returns, the elements of the newmeshes vector corresponding to the unchanged levels will be filled in with copies of the levels from the old mesh vector. The variable tags is modified in an undefined way, so its contents should not be relied upon. The variable BlockFactor specifies the amount by which each box will be coarsenable. Every grid box will have an integral multiple of BlockFactor cells in each dimension and also lower index values that are integral multiples. As a side effect, the minimum box size will be BlockFactor.

Expensive validations are done only when debugging is enabled (i.e. the DEBUG make variable is "TRUE").

Usage Notes:

All the input vectors should be defined with max index >= TopLevel. They should have values for indices [BaseLevel:TopLevel]. (except for OldMeshes, which must be defined for all indices). The new mesh vector newmeshes will be redefined up to index TopLevel+1. RefRatios should be defined such that RefRatios[L] is the value to use to refine the level L mesh to produce the level L+1 mesh. The tags vector is modified in an undefined manner. The output variable newmeshes may not be completely defined if an exception occurs. The BlockFactor can be used to force a minimum box size.

Constructor & Destructor Documentation

◆ MeshRefine() [1/3]

MeshRefine::MeshRefine ( )

default constructor – leaves object in an unusable state

◆ MeshRefine() [2/3]

MeshRefine::MeshRefine	(	const Box &	a_baseDomain,
		const Vector< int > &	a_refRatios,
		const Real	a_fillRatio,
		const int	a_blockFactor,
		const int	a_bufferSize,
		const int	a_maxSize
	)

full constructor – leaves object in usable state

Parameters

a_baseDomain	level 0 domain
a_refRatios	refinement ratios – refRatio[0] is btwn levels 0 and 1
a_fillRatio	measure of how efficiently tagged cells will be covered
a_blockFactor	amount by which grids are guaranteed to be coarsenable
a_bufferSize	proper nesting buffer amount
a_maxSize	maximum grid length in any direction – 0 means no limit.

◆ MeshRefine() [3/3]

MeshRefine::MeshRefine	(	const ProblemDomain &	a_baseDomain,
		const Vector< int > &	a_refRatios,
		const Real	a_fillRatio,
		const int	a_blockFactor,
		const int	a_bufferSize,
		const int	a_maxSize
	)

full constructor – leaves object in usable state

Parameters

a_baseDomain	level 0 domain
a_refRatios	refinement ratios – refRatio[0] is btwn levels 0 and 1
a_fillRatio	measure of how efficiently tagged cells will be covered
a_blockFactor	amount by which grids are guaranteed to be coarsenable
a_bufferSize	proper nesting buffer amount
a_maxSize	maximum grid length in any direction – 0 means no limit.

◆ ~MeshRefine()

virtual MeshRefine::~MeshRefine ( )

virtual

destructor

Member Function Documentation

◆ define() [1/2]

void MeshRefine::define	(	const Box &	a_baseDomain,
		const Vector< int > &	a_refRatios,
		const Real	a_fillRatio,
		const int	a_blockFactor,
		const int	a_bufferSize,
		const int	a_maxSize
	)

define function – size of RefRatios will define maximum number of levels

Parameters

a_baseDomain	level 0 domain
a_refRatios	refinement ratios – refRatio[0] is btwn levels 0 and 1
a_fillRatio	measure of how efficiently tagged cells will be covered
a_blockFactor	amount by which grids are guaranteed to be coarsenable
a_bufferSize	proper nesting buffer amount
a_maxSize	maximum grid length in any direction – 0 means no limit

◆ define() [2/2]

void MeshRefine::define	(	const ProblemDomain &	a_baseDomain,
		const Vector< int > &	a_refRatios,
		const Real	a_fillRatio,
		const int	a_blockFactor,
		const int	a_bufferSize,
		const int	a_maxSize
	)

define function – size of RefRatios will define maximum number of levels

Parameters

a_baseDomain	level 0 domain
a_refRatios	refinement ratios – refRatio[0] is btwn levels 0 and 1
a_fillRatio	measure of how efficiently tagged cells will be covered
a_blockFactor	amount by which grids are guaranteed to be coarsenable
a_bufferSize	proper nesting buffer amount
a_maxSize	maximum grid length in any direction – 0 means no limit

◆ regrid() [1/2]

virtual int MeshRefine::regrid	(	Vector< Vector< Box > > &	a_newmeshes,
		const IntVectSet &	a_tags,
		const int	a_baseLevel,
		const int	a_topLevel,
		const Vector< Vector< Box > > &	a_oldMeshes
	)

virtual

create hierarchy of grids from a single level of tags

This function creates a hierarchy of grids from a single level of tags on BaseLevel. If tags exist, then all levels will have grids. Returns the new finest level of grids.

Parameters

a_newmeshes	new set of grids at every level
a_tags	tagged cells on baseLevel
a_baseLevel	index of base mesh level (finest unchanged level)
a_topLevel	top level to refine (one less than finest possible level)
a_oldMeshes	existing grids (if no previous grids, set to domains)

◆ regrid() [2/2]

virtual int MeshRefine::regrid	(	Vector< Vector< Box > > &	a_newmeshes,
		Vector< IntVectSet > &	a_tags,
		const int	a_baseLevel,
		const int	a_topLevel,
		const Vector< Vector< Box > > &	a_oldMeshes
	)

virtual

create hierarchy of grids from tags at all levels

This function creates a hierarchy of grids from tags at all refinement levels. It is possible that not all levels will return with grids, since there may not be tags at all levels. Returns the new finest level of grids.

Parameters

a_newmeshes	new set of grids at every level
a_tags	tagged cells on each existing level
a_baseLevel	index of base mesh level (finest unchanged level)
a_topLevel	top level to refine (one less than finest possible level)
a_oldMeshes	existing grids (if no previous grids, set to domains)

◆ refRatios() [1/2]

const Vector<int>& MeshRefine::refRatios ( ) const

returns vector of refinement ratios

◆ fillRatio() [1/2]

Real MeshRefine::fillRatio ( ) const

returns fillRatio

◆ blockFactor() [1/2]

int MeshRefine::blockFactor ( ) const

returns blocking factor

◆ bufferSize() [1/2]

int MeshRefine::bufferSize ( ) const

returns proper nesting buffer size

◆ maxSize() [1/2]

int MeshRefine::maxSize ( ) const

returns maximum box size in any dimension – 0 means no limit

◆ refRatios() [2/2]

void MeshRefine::refRatios ( const Vector< int > & a_nRefVect )

sets vector of refinement ratios

◆ fillRatio() [2/2]

void MeshRefine::fillRatio ( const Real a_fill_ratio )

sets fillRatio

◆ blockFactor() [2/2]

void MeshRefine::blockFactor ( const int a_block_factor )

sets blocking factor

◆ bufferSize() [2/2]

void MeshRefine::bufferSize ( const int a_buffer_size )

sets proper nesting buffer size

◆ maxSize() [2/2]

void MeshRefine::maxSize ( const int a_max_size )

sets maximum box size in any dimension – 0 means no limit

◆ isDefined()

bool MeshRefine::isDefined ( ) const

has this object been defined properly?

◆ granularity()

void MeshRefine::granularity ( int a_granularity )

sets proper nesting region granularity.

◆ makeBoxes()

virtual void MeshRefine::makeBoxes	(	Vector< Box > &	a_mesh,
		const IntVectSet &	a_tags,
		const IntVectSet &	a_pnd,
		const ProblemDomain &	a_domain,
		const int	a_maxSize,
		const int	a_totalBufferSize
	)		const

pure virtual

constructs a set of boxes which covers a set of tagged cells

constructs a set of boxes which covers a set of tagged cells by using the algorithm of choice. Everything should be on the same level, and blocking factor is not applied. Boxes will be on the same refinement level as the tags. This would normally be a protected function, but it can be useful to call it on its own, so it has been left public.

Parameters

a_mesh	output: refined boxes at each new level
a_tags	input: set of tagged cells to cover
a_pnd	input: proper nesting domain in which mesh boxes must live
a_domain	input: physical domain
a_maxSize	input: largest number of cells in any dimension for any box

Implemented in BRMeshRefine.

◆ setPNDMode()

void MeshRefine::setPNDMode ( int a_mode )

◆ computeLocalBlockFactors()

virtual void MeshRefine::computeLocalBlockFactors ( )

protectedvirtual

computes local blockFactors used internally to enforce the BlockFactor

This function computes values for m_local_blockfactors array, which is the amount that tags on a level are coarsened in order to guarantee that the grids on the next finer level are coarsenable by the BlockFactor.

◆ properlyNested()

bool MeshRefine::properlyNested	(	const Box &	a_box,
		const ProblemDomain &	a_domain,
		const IntVectSet &	a_pnd,
		int	a_totalBuffer
	)		const

protected

◆ makePNDs() [1/2]

virtual void MeshRefine::makePNDs	(	Vector< IntVectSet > &	a_pnds,
		Vector< int > &	a_totalBufferSize,
		const int	a_baseLevel,
		const int	a_topLevel,
		const Vector< ProblemDomain > &	a_domains,
		const IntVectSet &	a_baseMesh,
		const Vector< int > &	a_bufferSize
	)		const

protectedvirtual

Computes proper nesting domains.

This should only be called by refine. it assumes that everything has already been coarsened by the local blocking factor

Parameters

a_pnds	output: proper nesting domains at each level
a_baseLevel	input: index of highest AMR level not to be refined
a_topLevel	input: index of highest AMR level in output
a_domains	input: (same as in meshRefine)
a_baseMesh	input: boxes at mesh level BaseLevel
a_bufferSize	input: (similar to meshRefine; but with level-dependent coarsening factors)

◆ makePNDs() [2/2]

virtual void MeshRefine::makePNDs	(	Vector< IntVectSet > &	a_pnds,
		Vector< int > &	a_totalBufferSize,
		const int	a_baseLevel,
		const int	a_topLevel,
		const Vector< ProblemDomain > &	a_domains,
		const Vector< Box > &	a_baseMesh,
		const Vector< int > &	a_bufferSize
	)		const

protectedvirtual

Parameters

a_pnds	output: proper nesting domains at each level
a_baseLevel	input: index of highest AMR level not to be refined
a_topLevel	input: index of highest AMR level in output
a_domains	input: (same as in meshRefine)
a_baseMesh	input: boxes at mesh level BaseLevel
a_bufferSize	input: (similar to meshRefine; but with level-dependent coarsening factors)

Member Data Documentation

◆ m_isDefined

bool MeshRefine::m_isDefined

protected

◆ m_vectDomains

Vector<ProblemDomain> MeshRefine::m_vectDomains

protected

◆ m_pnds

Vector<IntVectSet> MeshRefine::m_pnds

protected

◆ m_lastBase

int MeshRefine::m_lastBase

protected

◆ m_lastTop

int MeshRefine::m_lastTop

protected

◆ m_lastBuffer

int MeshRefine::m_lastBuffer

protected

◆ m_nRefVect

Vector<int> MeshRefine::m_nRefVect

protected

◆ m_fillRatio

Real MeshRefine::m_fillRatio

protected

◆ m_blockFactor

int MeshRefine::m_blockFactor

protected

◆ m_level_blockfactors

Vector<int> MeshRefine::m_level_blockfactors

protected

◆ m_bufferSize

int MeshRefine::m_bufferSize

protected

◆ m_maxSize

int MeshRefine::m_maxSize

protected

◆ m_granularity

int MeshRefine::m_granularity

protected

◆ m_PNDMode

int MeshRefine::m_PNDMode

protected

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

MeshRefine.H

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ MeshRefine() [1/3]

◆ MeshRefine() [2/3]

◆ MeshRefine() [3/3]

◆ ~MeshRefine()

Member Function Documentation

◆ define() [1/2]

◆ define() [2/2]

◆ regrid() [1/2]

◆ regrid() [2/2]

◆ refRatios() [1/2]

◆ fillRatio() [1/2]

◆ blockFactor() [1/2]

◆ bufferSize() [1/2]

◆ maxSize() [1/2]

◆ refRatios() [2/2]

◆ fillRatio() [2/2]

◆ blockFactor() [2/2]

◆ bufferSize() [2/2]

◆ maxSize() [2/2]

◆ isDefined()

◆ granularity()

◆ makeBoxes()

◆ setPNDMode()

◆ computeLocalBlockFactors()

◆ properlyNested()

◆ makePNDs() [1/2]

◆ makePNDs() [2/2]

Member Data Documentation

◆ m_isDefined

◆ m_vectDomains

◆ m_pnds

◆ m_lastBase

◆ m_lastTop

◆ m_lastBuffer

◆ m_nRefVect

◆ m_fillRatio

◆ m_blockFactor

◆ m_level_blockfactors

◆ m_bufferSize

◆ m_maxSize

◆ m_granularity

◆ m_PNDMode