Class VisMaterialsDataStrategy<DIM> is an abstract base class that defines an interface allowing an VisItDataWriter<DIM> object to generate plot files that contain material and species fractions, as well as state variables for individual materials. A concrete object of this type must be registered with the data writer in order to use materials or species with the data writer. The registration of the concrete object is done using the method setMaterialsDataWriter() from the VisItDataWriter class. VisIt requires that material fractions, species fractions, and material state variables be cell-centered. If they are not cell-centered in the simulation, it is the job of the relevant packing method to convert them to a cell-centered basis before packing them into the buffer. More...

#include <VisMaterialsDataStrategy.h>

Inheritance diagram for SAMRAI::appu::VisMaterialsDataStrategy< DIM >:

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Public Types
enum	PACK_RETURN_TYPE { VISIT_ALLZERO = 0, VISIT_ALLONE = 1, VISIT_MIXED = 2 }
	Enumerated type for the allowable return values for packMaterialFractionsIntoDoubleBuffer() and packSpeciesFractionsIntoDoubleBuffer(). More...

Public Member Functions
	VisMaterialsDataStrategy ()
	Default constructor for VisMaterialsDataStrategy<DIM>. More...

virtual	~VisMaterialsDataStrategy ()
	Destructor for VisMaterialsDataStrategy<DIM>. More...

virtual int	packMaterialFractionsIntoDoubleBuffer (double *buffer, const hier::Patch< DIM > &patch, const hier::Box< DIM > &region, const std::string &material_name) const
	This function, which must be implemented whenever materials are used, packs cell-centered material fractions for the given material, patch, and region into the given 1D double precision buffer which will already have been allocated. If a non-zero ghost cell vector was specified when registerMaterialNames() was invoked, then ghost data corresponding to this ghost cell vector must be packed into this double buffer. The data must be packed into the buffer in column major order, i.e. (f(x_0,y_0,z_0), f(x_1,y_0,z_0), f(x_2,y_0,z_0), ...). More...

virtual int	packMaterialFractionsIntoSparseBuffers (int *mat_list, std::vector< int > &mix_zones, std::vector< int > &mix_mat, std::vector< double > &vol_fracs, std::vector< int > &next_mat, const hier::Patch< DIM > &patch, const hier::Box< DIM > &region) const
	Pack sparse volume fraction data. More...

virtual int	packSpeciesFractionsIntoDoubleBuffer (double *buffer, const hier::Patch< DIM > &patch, const hier::Box< DIM > &region, const std::string &material_name, const std::string &species_name) const
	This function packs cell-centered species fractions for the given species. More...

Detailed Description

template<int DIM>
class SAMRAI::appu::VisMaterialsDataStrategy< DIM >

The concrete strategy object is responsible for supplying an implementation of packMaterialFractionsIntoDoubleBuffer(). If species are used, packSpeciesFractionsIntoDoubleBuffer() must also be implemented. If material state variables are used, packMaterialStateVariableIntoDoubleBuffer() must be implemented.

See also: appu::VisItDataWriter

Member Enumeration Documentation

◆ PACK_RETURN_TYPE

template<int DIM>

enum SAMRAI::appu::VisMaterialsDataStrategy::PACK_RETURN_TYPE

ALL_ZERO (Fractions are 0.0 for every cell in patch.)
ALL_ONE (Fractions are 1.0 for every cell in patch.)
MIXTURE (There is some of this species/material in one or more cells of this patch, but the above two cases do not apply.)

Enumerator
VISIT_ALLZERO
VISIT_ALLONE
VISIT_MIXED

Constructor & Destructor Documentation

◆ VisMaterialsDataStrategy()

template<int DIM>

SAMRAI::appu::VisMaterialsDataStrategy< DIM >::VisMaterialsDataStrategy ( )

◆ ~VisMaterialsDataStrategy()

template<int DIM>

virtual SAMRAI::appu::VisMaterialsDataStrategy< DIM >::~VisMaterialsDataStrategy ( )

virtual

Member Function Documentation

◆ packMaterialFractionsIntoDoubleBuffer()

template<int DIM>

virtual int SAMRAI::appu::VisMaterialsDataStrategy< DIM >::packMaterialFractionsIntoDoubleBuffer	(	double *	buffer,
		const hier::Patch< DIM > &	patch,
		const hier::Box< DIM > &	region,
		const std::string &	material_name
	)		const

virtual

This method will be called once for each material for each patch.

A enumerated PACK_RETURN_TYPE is used for a return value. To save space in the visit data file, you may choose to set the return value to indicate if a material does not exist at all on the patch, or if the material exists fully on the patch. A return of ALL_ZERO indicates there is 0% of the material in each of the cells of the patch, while a return type of ALL_ONE indicates the material consumes 100% on each of the cells of the patch. If the patch has a mixture of the material (i.e. between 0% and 100%) then return MIXTURE.

Parameters

buffer	Double precision array into which cell-centered material fractions are packed.
patch	hier::Patch on which fractions are defined.
region	hier::Box region over which to pack fractions.
material_name	String identifier for the material.

Returns: The enumeration constant VisMaterialsDataStrategy::ALL_ZERO, VisMaterialsDataStrategy::ALL_ONE, or VisMaterialsDataStrategy::MIXTURE.

Reimplemented in SAMRAI::appu::EmbeddedBoundaryGeometry< DIM >.

◆ packMaterialFractionsIntoSparseBuffers()

template<int DIM>

virtual int SAMRAI::appu::VisMaterialsDataStrategy< DIM >::packMaterialFractionsIntoSparseBuffers	(	int *	mat_list,
		std::vector< int > &	mix_zones,
		std::vector< int > &	mix_mat,
		std::vector< double > &	vol_fracs,
		std::vector< int > &	next_mat,
		const hier::Patch< DIM > &	patch,
		const hier::Box< DIM > &	region
	)		const

virtual

This function, which must be implemented whenever materials are used if the sparse packing format is to be used. Packing traverses the patch in a column major order (i.e. (f(x_0,y_0,z_0), f(x_1,y_0,z_0), f(x_2,y_0,z_0), ...) ). If the current cell is clean, then the material number of the material occupying the cell should be packed in to the buffer. If the cell is mixed, then a negative index (i.e., with numbering begining at -1) into the auxilliary mix_zones, mix_mat, vol_fracs, and next_mat vectors which will contain the sparse representation of the volume fractions (VisIt will correct the negative index internally and offset to a zero based representation). For each component of a mixed cell packMaterialFractionsIntoDoubleBuffer() should pack an entry in the following vectors: mix_zones: the cell number with which the fraction is associated mix_mat: the material number of the fraction vol_fracs: the volume fraction of the current material next_mat: either the (positive but still offset by one) index to the next mixed component within the auxilliary vectors or a 0, indicating the end of the mixed components for this cell.

If a non-zero ghost cell vector was specified when registerMaterialNames() was invoked, then ghost data corresponding to this ghost cell vector must be packed into this double buffer.

This method will be called once for each patch.

A enumerated PACK_RETURN_TYPE is used for a return value. To save space in the visit data file, you may choose to set the return value to ALL_ONE to indicate that a single material occupies 100% of each cell on the patch. Otherwise, MIXTURE should be returned even if individual cells are not mixed, as this indicates that the patch contains multiple materials.

Parameters

buffer	Double precision array into which the material numbers (or negative indices) are packed.
mix_zones	std::vector<int> into which the cell number associated with the mixed components are packed.
mix_mat	std::vector<int> into which the material numbers of the mixed components are packed.
vol_fracs	std::vector<double> into which the volume fractions (between 0.0 and 1.0) of the mixed components are packed.
next_mat	std::vector<int> into which the (positive) index of the next mixed component or a terminating 0 are packed.
patch	hier::Patch on which fractions are defined.
region	hier::Box region over which to pack fractions.

Returns: The enumeration constant VisMaterialsDataStrategy::ALL_ONE, or VisMaterialsDataStrategy::MIXTURE.

◆ packSpeciesFractionsIntoDoubleBuffer()

template<int DIM>

virtual int SAMRAI::appu::VisMaterialsDataStrategy< DIM >::packSpeciesFractionsIntoDoubleBuffer	(	double *	buffer,
		const hier::Patch< DIM > &	patch,
		const hier::Box< DIM > &	region,
		const std::string &	material_name,
		const std::string &	species_name
	)		const

virtual

This user supplied function packs species fractions of the given material, patch, and region into the supplied 1D double precision buffer. If a non-zero ghost cell vector was specified when registerSpeciesNames() was invoked, then ghost data corresponding to this ghost cell vector must be packed into this double buffer. The data must be packed into the buffer in column major order.

This method will be called once for each species for each patch.

The method must return a PACK_RETURN_TYPE of ALL_ONE, ALL_ZERO, or MIXED. See the discussion above for the "packMaterialFractionsIntoDoubleBuffer()" method for an explanation of correct return values.

Parameters

buffer	Double precision array into which cell-centered species fractions are packed.
patch	hier::Patch on which fractions are defined.
region	hier::Box region over which to pack fractions.
material_name	String identifier for the material to which the species belongs.
species_name	String identifier for the species.

Returns: The enumeration constant VisMaterialsDataStrategy::ALL_ZERO, VisMaterialsDataStrategy::ALL_ONE, or VisMaterialsDataStrategy::MIXTURE.

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

/samrai/include/VisMaterialsDataStrategy.h

Public Types

Public Member Functions

Detailed Description

template<int DIM> class SAMRAI::appu::VisMaterialsDataStrategy< DIM >

Member Enumeration Documentation

◆ PACK_RETURN_TYPE

Constructor & Destructor Documentation

◆ VisMaterialsDataStrategy()

◆ ~VisMaterialsDataStrategy()

Member Function Documentation

◆ packMaterialFractionsIntoDoubleBuffer()

◆ packMaterialFractionsIntoSparseBuffers()

◆ packSpeciesFractionsIntoDoubleBuffer()

template<int DIM>
class SAMRAI::appu::VisMaterialsDataStrategy< DIM >