mfem::QuadratureSpace Class Reference

Class representing the storage layout of a QuadratureFunction. More...

#include <qspace.hpp>

Inheritance diagram for mfem::QuadratureSpace:

Collaboration diagram for mfem::QuadratureSpace:

Public Member Functions
	QuadratureSpace (Mesh *mesh_, int order_)
	Create a QuadratureSpace based on the global rules from IntRules.
	QuadratureSpace (Mesh &mesh_, const IntegrationRule &ir)
	Create a QuadratureSpace with an IntegrationRule, valid only when the mesh has one element type.
	QuadratureSpace (Mesh *mesh_, std::istream &in)
	Read a QuadratureSpace from the stream in.
int	GetNE () const
	Returns number of elements in the mesh.
ElementTransformation *	GetTransformation (int idx) override
	Returns the element transformation of element idx.
Geometry::Type	GetGeometry (int idx) const override
	Returns the geometry type of element idx.
const IntegrationRule &	GetElementIntRule (int idx) const
	Get the IntegrationRule associated with mesh element idx.
int	GetPermutedIndex (int idx, int iq) const override
	Returns the permuted index of the iq quadrature point in entity idx.
int	GetEntityIndex (const ElementTransformation &T) const override
	Returns the element index of T.
void	Save (std::ostream &out) const override
	Write the QuadratureSpace to the stream out.
Public Member Functions inherited from mfem::QuadratureSpaceBase
int	GetSize () const
	Return the total number of quadrature points.
int	GetOrder () const
	Return the order of the quadrature rule(s) used by all elements.
int	GetNE () const
	Return the number of entities.
Mesh *	GetMesh () const
	Returns the mesh.
const IntegrationRule &	GetIntRule (int idx) const
	Return the IntegrationRule associated with entity idx.
const Vector &	GetWeights () const
	Return the integration weights (including geometric factors).
real_t	Integrate (Coefficient &coeff) const
	Return the integral of the scalar Coefficient coeff.
void	Integrate (VectorCoefficient &coeff, Vector &integrals) const
	Return the integral of the VectorCoefficient coeff in integrals.
virtual	~QuadratureSpaceBase ()

Protected Member Functions
const Vector &	GetGeometricFactorWeights () const override
	Compute the det(J) (volume or faces, depending on the type).
void	ConstructOffsets ()
void	Construct ()
Protected Member Functions inherited from mfem::QuadratureSpaceBase
	QuadratureSpaceBase (Mesh &mesh_, int order_=0)
	Protected constructor. Used by derived classes.
	QuadratureSpaceBase (Mesh &mesh_, Geometry::Type geom, const IntegrationRule &ir)
	Protected constructor. Used by derived classes.
void	ConstructIntRules (int dim)
	Fill the int_rule array for each geometry type using order.
void	ConstructWeights () const
	Compute the integration weights.

Additional Inherited Members
Protected Attributes inherited from mfem::QuadratureSpaceBase
Mesh &	mesh
	The underlying mesh.
int	order
	The order of integration rule.
int	size
	Total number of quadrature points.
Vector	weights
	Integration weights.
long	nodes_sequence = 0
	Nodes counter for cache invalidation.
Array< int >	offsets
	Entity quadrature point offset array, of size num_entities + 1.
const IntegrationRule *	int_rule [Geometry::NumGeom]
	The quadrature rules used for each geometry type.

Detailed Description

Class representing the storage layout of a QuadratureFunction.

Multiple QuadratureFunctions can share the same QuadratureSpace.

Definition at line 119 of file qspace.hpp.

Constructor & Destructor Documentation

QuadratureSpace() [1/3]

mfem::QuadratureSpace::QuadratureSpace ( Mesh * mesh_, int order_ )

inline

Create a QuadratureSpace based on the global rules from IntRules.

Definition at line 127 of file qspace.hpp.

QuadratureSpace() [2/3]

mfem::QuadratureSpace::QuadratureSpace	(	Mesh &	mesh_,
		const IntegrationRule &	ir )

Create a QuadratureSpace with an IntegrationRule, valid only when the mesh has one element type.

Definition at line 141 of file qspace.cpp.

QuadratureSpace() [3/3]

mfem::QuadratureSpace::QuadratureSpace	(	Mesh *	mesh_,
		std::istream &	in )

Read a QuadratureSpace from the stream in.

Definition at line 118 of file qspace.cpp.

Member Function Documentation

Construct()

void mfem::QuadratureSpace::Construct ( )

protected

Definition at line 112 of file qspace.cpp.

ConstructOffsets()

void mfem::QuadratureSpace::ConstructOffsets ( )

protected

Definition at line 97 of file qspace.cpp.

GetElementIntRule()

const IntegrationRule & mfem::QuadratureSpace::GetElementIntRule ( int idx ) const

inline

Get the IntegrationRule associated with mesh element idx.

Definition at line 149 of file qspace.hpp.

GetEntityIndex()

int mfem::QuadratureSpace::GetEntityIndex ( const ElementTransformation & T ) const

inlineoverridevirtual

Returns the element index of T.

Implements mfem::QuadratureSpaceBase.

Definition at line 160 of file qspace.hpp.

GetGeometricFactorWeights()

const Vector & mfem::QuadratureSpace::GetGeometricFactorWeights ( ) const

overrideprotectedvirtual

Compute the det(J) (volume or faces, depending on the type).

Implements mfem::QuadratureSpaceBase.

Definition at line 156 of file qspace.cpp.

GetGeometry()

Geometry::Type mfem::QuadratureSpace::GetGeometry ( int idx ) const

inlineoverridevirtual

Returns the geometry type of element idx.

Implements mfem::QuadratureSpaceBase.

Definition at line 145 of file qspace.hpp.

GetNE()

int mfem::QuadratureSpace::GetNE ( ) const

inline

Returns number of elements in the mesh.

Definition at line 138 of file qspace.hpp.

GetPermutedIndex()

int mfem::QuadratureSpace::GetPermutedIndex ( int idx, int iq ) const

inlineoverridevirtual

Returns the permuted index of the iq quadrature point in entity idx.

The member function QuadratureSpace::GetPermutedIndex always returns iq, the permutation is only nontrivial for FaceQuadratureSpace.

Implements mfem::QuadratureSpaceBase.

Definition at line 157 of file qspace.hpp.

GetTransformation()

ElementTransformation * mfem::QuadratureSpace::GetTransformation ( int idx )

inlineoverridevirtual

Returns the element transformation of element idx.

Implements mfem::QuadratureSpaceBase.

Definition at line 141 of file qspace.hpp.

Save()

void mfem::QuadratureSpace::Save ( std::ostream & out ) const

overridevirtual

Write the QuadratureSpace to the stream out.

Implements mfem::QuadratureSpaceBase.

Definition at line 149 of file qspace.cpp.

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

• fem/qspace.hpp
• fem/qspace.cpp