Mapping using nearest neighboring vertices and their local gradient values. More...

#include <NearestNeighborGradientMapping.hpp>

Inheritance diagram for precice::mapping::NearestNeighborGradientMapping:

Collaboration diagram for precice::mapping::NearestNeighborGradientMapping:

Public Member Functions
	NearestNeighborGradientMapping (Constraint constraint, int dimensions)
	Constructor.
void	onMappingComputed (mesh::PtrMesh origins, mesh::PtrMesh searchSpace) final override
	Calculates the offsets needed for the gradient mappings after calculating the matched vertices.
std::string	getName () const final override
	name of the nng mapping
Public Member Functions inherited from precice::mapping::NearestNeighborBaseMapping
	NearestNeighborBaseMapping (Constraint constraint, int dimensions, bool hasGradient, std::string mappingName, std::string mappingNameShort)
	Constructor.
void	computeMapping () final override
	Computes the mapping coefficients from the in- and output mesh.
void	clear () final override
	Removes a computed mapping.
void	tagMeshFirstRound () final override
	Method used by partition. Tags vertices that could be owned by this rank.
void	tagMeshSecondRound () final override
	Method used by partition. Tags vertices that can be filtered out.
Public Member Functions inherited from precice::mapping::Mapping
	Mapping (Constraint constraint, int dimensions, bool requiresGradientData, InitialGuessRequirement initialGuessRequirement)
	Constructor, takes mapping constraint.
Mapping &	operator= (Mapping &&)=delete
virtual	~Mapping ()=default
	Destructor, empty.
void	setMeshes (const mesh::PtrMesh &input, const mesh::PtrMesh &output)
	Sets input and output meshes carrying data to be mapped.
const mesh::PtrMesh &	getInputMesh () const
const mesh::PtrMesh &	getOutputMesh () const
Constraint	getConstraint () const
	Returns the constraint (consistent/conservative) of the mapping.
MeshRequirement	getInputRequirement () const
	Returns the requirement on the input mesh.
MeshRequirement	getOutputRequirement () const
	Returns the requirement on the output mesh.
bool	hasComputedMapping () const
	Returns true, if the mapping has been computed.
virtual bool	hasConstraint (const Constraint &constraint) const
	Checks whether the mapping has the given constraint or not.
bool	isScaledConsistent () const
	Returns true if mapping is a form of scaled consistent mapping.
bool	requiresInitialGuess () const
	Return true if the mapping requires an initial guess.
bool	isJustInTimeMapping () const
const Eigen::VectorXd &	initialGuess () const
	Return the provided initial guess of a mapping using an initialGuess.
Eigen::VectorXd &	initialGuess ()
bool	hasInitialGuess () const
	True if initialGuess().size() == 0.
void	map (int inputDataID, int outputDataID)
void	map (int inputDataID, int outputDataID, Eigen::VectorXd &initialGuess)
void	map (const time::Sample &input, Eigen::VectorXd &output)
	Maps an input Sample to output data from input mesh to output mesh.
void	map (const time::Sample &input, Eigen::VectorXd &output, Eigen::VectorXd &initialGuess)
	Maps an input Sample to output data from input mesh to output mesh, given an initialGuess.
virtual void	scaleConsistentMapping (const Eigen::VectorXd &input, Eigen::VectorXd &output, Constraint type) const
	Scales the consistently mapped output data such that the surface integral of the values on input mesh and output mesh are equal.
bool	requiresGradientData () const
	Returns whether the mapping requires gradient data.
virtual void	mapConservativeAt (const Eigen::Ref< const Eigen::MatrixXd > &coordinates, const Eigen::Ref< const Eigen::MatrixXd > &source, impl::MappingDataCache &cache, Eigen::Ref< Eigen::MatrixXd > target)
	Just-in-time mapping variant of mapConservative.
virtual void	mapConsistentAt (const Eigen::Ref< const Eigen::MatrixXd > &coordinates, const impl::MappingDataCache &cache, Eigen::Ref< Eigen::MatrixXd > values)
	Just-in-time mapping variant of mapConsistent.
virtual void	updateMappingDataCache (impl::MappingDataCache &cache, const Eigen::Ref< const Eigen::VectorXd > &in)
	Allows updating a so-called MappingDataCache for more efficient just-in-time mappings.
virtual void	initializeMappingDataCache (impl::MappingDataCache &cache)
	Allocates memory and sets up the data structures inside the MappingDataCache.
virtual void	completeJustInTimeMapping (impl::MappingDataCache &cache, Eigen::Ref< Eigen::MatrixXd > result)
	Completes a just-in-time mapping for conservative constraints.

Protected Member Functions
void	mapConservative (const time::Sample &inData, Eigen::VectorXd &outData) final override
	Maps data using a conservative constraint.
void	mapConsistent (const time::Sample &inData, Eigen::VectorXd &outData) final override
	Maps data using a consistent constraint.
Protected Member Functions inherited from precice::mapping::Mapping
mesh::PtrMesh	input () const
	Returns pointer to input mesh.
mesh::PtrMesh	output () const
	Returns pointer to output mesh.
void	setInputRequirement (MeshRequirement requirement)
	Sets the mesh requirement for the input mesh.
void	setOutputRequirement (MeshRequirement requirement)
	Sets the mesh requirement for the output mesh.
int	getDimensions () const

Additional Inherited Members
Public Types inherited from precice::mapping::Mapping
enum	Constraint { CONSISTENT , CONSERVATIVE , SCALED_CONSISTENT_SURFACE , SCALED_CONSISTENT_VOLUME }
	Specifies additional constraints for a mapping. More...
enum class	MeshRequirement { UNDEFINED = 0 , VERTEX = 1 , FULL = 2 }
	Specifies requirements for the input and output meshes of a mapping. More...
enum class	InitialGuessRequirement : bool { Required = true , None = false }
	Specifies whether the mapping requires an initial guess. More...
Protected Attributes inherited from precice::mapping::NearestNeighborBaseMapping
std::string	mappingName
	NearestNeighborMapping or NearestNeighborGradientMapping.
std::string	mappingNameShort
	nn or nng
logging::Logger	_log {"mapping::" + mappingName}
std::vector< Eigen::VectorXd >	_offsetsMatched
std::vector< int >	_vertexIndices
	Computed output vertex indices to map data from input vertices to.
Protected Attributes inherited from precice::mapping::Mapping
bool	_hasComputedMapping = false
	Flag to indicate whether computeMapping() has been called.
bool	_requiresGradientData
	Flag if gradient data is required for the mapping.

Detailed Description

Mapping using nearest neighboring vertices and their local gradient values.

Definition at line 11 of file NearestNeighborGradientMapping.hpp.

Constructor & Destructor Documentation

◆ NearestNeighborGradientMapping()

precice::mapping::NearestNeighborGradientMapping::NearestNeighborGradientMapping	(	Constraint	constraint,
		int	dimensions )

Constructor.

Parameters

[in]	constraint	Specifies mapping to be consistent or conservative.
[in]	dimensions	Dimensionality of the meshes

Definition at line 17 of file NearestNeighborGradientMapping.cpp.

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Member Function Documentation

◆ getName()

std::string precice::mapping::NearestNeighborGradientMapping::getName ( ) const

finaloverridevirtual

name of the nng mapping

Implements precice::mapping::Mapping.

Definition at line 96 of file NearestNeighborGradientMapping.cpp.

◆ mapConservative()

void precice::mapping::NearestNeighborGradientMapping::mapConservative	(	const time::Sample &	inData,
		Eigen::VectorXd &	outData )

finaloverrideprotectedvirtual

Maps data using a conservative constraint.

Parameters

[in]	input	Sample to map data from
[in]	output	Values to map to

If requiresInitialGuess(), then the initial guess is available via initialGuess(). Provide a new initial guess by overwriting it. The mapping has full control over its size.

See also: For mappings requiring an initialGuess: initialGuess() hasInitialGuess()

Implements precice::mapping::Mapping.

Definition at line 91 of file NearestNeighborGradientMapping.cpp.

◆ mapConsistent()

void precice::mapping::NearestNeighborGradientMapping::mapConsistent	(	const time::Sample &	inData,
		Eigen::VectorXd &	outData )

finaloverrideprotectedvirtual

Maps data using a consistent constraint.

Parameters

[in]	input	Sample to map data from
[in]	output	Values to map to

If requiresInitialGuess(), then the initial guess is available via initialGuess(). Provide a new initial guess by overwriting it. The mapping has full control over its size.