itk::fem::LinearSystemWrapperVNL Class Reference

#include <itkFEMLinearSystemWrapperVNL.h>

Inheritance diagram for itk::fem::LinearSystemWrapperVNL:

Collaboration diagram for itk::fem::LinearSystemWrapperVNL:

List of all members.

Public Types
typedef LinearSystemWrapper::Float	Float
typedef std::vector < MatrixRepresentation * >	MatrixHolder
typedef vnl_sparse_matrix< Float >	MatrixRepresentation
typedef LinearSystemWrapper	SuperClass
Public Member Functions
virtual void	AddMatrixValue (unsigned int i, unsigned int j, Float value, unsigned int matrixIndex)
virtual void	AddSolutionValue (unsigned int i, Float value, unsigned int solutionIndex)
virtual void	AddVectorValue (unsigned int i, Float value, unsigned int vectorIndex)
virtual void	CopySolution2Vector (unsigned solutionIndex, unsigned int vectorIndex)
virtual void	CopyVector2Solution (unsigned int vectorIndex, unsigned int solutionIndex)
virtual void	DestroyMatrix (unsigned int matrixIndex)
virtual void	DestroySolution (unsigned int solutionIndex)
virtual void	DestroyVector (unsigned int vectorIndex)
virtual Float	GetMatrixValue (unsigned int i, unsigned int j, unsigned int matrixIndex) const
virtual Float	GetSolutionValue (unsigned int i, unsigned int solutionIndex) const
virtual Float	GetVectorValue (unsigned int i, unsigned int vectorIndex) const
virtual void	InitializeMatrix (unsigned int matrixIndex)
virtual void	InitializeSolution (unsigned int solutionIndex)
virtual void	InitializeVector (unsigned int vectorIndex)
virtual bool	IsMatrixInitialized (unsigned int matrixIndex)
virtual bool	IsSolutionInitialized (unsigned int solutionIndex)
virtual bool	IsVectorInitialized (unsigned int vectorIndex)
	LinearSystemWrapperVNL ()
virtual void	MultiplyMatrixMatrix (unsigned int resultMatrixIndex, unsigned int leftMatrixIndex, unsigned int rightMatrixIndex)
virtual void	MultiplyMatrixVector (unsigned int resultVectorIndex, unsigned int matrixIndex, unsigned int vectorIndex)
virtual void	ScaleMatrix (Float scale, unsigned int matrixIndex)
virtual void	SetMatrixValue (unsigned int i, unsigned int j, Float value, unsigned int matrixIndex)
virtual void	SetMaximumNonZeroValuesInMatrix (unsigned int, unsigned int)
virtual void	SetSolutionValue (unsigned int i, Float value, unsigned int solutionIndex)
virtual void	SetVectorValue (unsigned int i, Float value, unsigned int vectorIndex)
virtual void	Solve (void)
virtual void	SwapMatrices (unsigned int matrixIndex1, unsigned int matrixIndex2)
virtual void	SwapSolutions (unsigned int solutionIndex1, unsigned int solutionIndex2)
virtual void	SwapVectors (unsigned int vectorIndex1, unsigned int vectorIndex2)
virtual	~LinearSystemWrapperVNL ()
Private Attributes
MatrixHolder *	m_Matrices
std::vector< vnl_vector< Float > * > *	m_Solutions
std::vector< vnl_vector< Float > * > *	m_Vectors

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Detailed Description

LinearSystemWrapper class that uses VNL numeric library functions to define a sparse linear system of equations.

See also:

LinearSystemWrapper

Definition at line 39 of file itkFEMLinearSystemWrapperVNL.h.

---

Member Typedef Documentation

typedef LinearSystemWrapper::Float itk::fem::LinearSystemWrapperVNL::Float

Floating point storage type used within a class

Reimplemented from itk::fem::Solution.

Definition at line 44 of file itkFEMLinearSystemWrapperVNL.h.

typedef std::vector<MatrixRepresentation *> itk::fem::LinearSystemWrapperVNL::MatrixHolder

Definition at line 53 of file itkFEMLinearSystemWrapperVNL.h.

typedef vnl_sparse_matrix<Float> itk::fem::LinearSystemWrapperVNL::MatrixRepresentation

Definition at line 50 of file itkFEMLinearSystemWrapperVNL.h.

typedef LinearSystemWrapper itk::fem::LinearSystemWrapperVNL::SuperClass

Definition at line 47 of file itkFEMLinearSystemWrapperVNL.h.

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Constructor & Destructor Documentation

itk::fem::LinearSystemWrapperVNL::LinearSystemWrapperVNL

(

)

[inline]

Definition at line 56 of file itkFEMLinearSystemWrapperVNL.h.

virtual itk::fem::LinearSystemWrapperVNL::~LinearSystemWrapperVNL

(

)

[virtual]

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Member Function Documentation

virtual void itk::fem::LinearSystemWrapperVNL::AddMatrixValue	(	unsigned int	i,
		unsigned int	j,
		Float	value,
		unsigned int	matrixIndex
	)		[inline, virtual]

Virtual function to add a value to a specific element of the A matrix.

Parameters:

i	row of the element
j	column of the element
value	value to add to the existing element
matrixIndex	index of matrix to add value to

Implements itk::fem::LinearSystemWrapper.

Definition at line 95 of file itkFEMLinearSystemWrapperVNL.h.

virtual void itk::fem::LinearSystemWrapperVNL::AddSolutionValue	(	unsigned int	i,
		Float	value,
		unsigned int	solutionIndex
	)		[inline, virtual]

Virtual function to add a value of specific element of the solution vector.

Parameters:

i	element Index in solution vector
value	new value of the element
solutionIndex	index of solution vector to add value to

Implements itk::fem::LinearSystemWrapper.

Definition at line 122 of file itkFEMLinearSystemWrapperVNL.h.

virtual void itk::fem::LinearSystemWrapperVNL::AddVectorValue	(	unsigned int	i,
		Float	value,
		unsigned int	vectorIndex
	)		[inline, virtual]

Virtual function to add a value to a specific element of the B vector.

Parameters:

i	row of the element
value	value to add to the existing element
vectorIndex	index of vector to add value to

Implements itk::fem::LinearSystemWrapper.

Definition at line 110 of file itkFEMLinearSystemWrapperVNL.h.

virtual void itk::fem::LinearSystemWrapperVNL::CopySolution2Vector	(	unsigned	solutionIndex,
		unsigned int	vectorIndex
	)		[virtual]

virtual void itk::fem::LinearSystemWrapperVNL::CopyVector2Solution	(	unsigned int	vectorIndex,
		unsigned int	solutionIndex
	)		[virtual]

Copy a vector to a solution vector

Parameters:

vectorIndex	index of a vector to copy
solutionIndex	index of a solution to copy the solution to

Implements itk::fem::LinearSystemWrapper.

virtual void itk::fem::LinearSystemWrapperVNL::DestroyMatrix

(

unsigned int

matrixIndex

)

[virtual]

Free the memory from a matrix

Parameters:

matrixIndex

index of matrix to destroy

Implements itk::fem::LinearSystemWrapper.

virtual void itk::fem::LinearSystemWrapperVNL::DestroySolution

(

unsigned int

solutionIndex

)

[virtual]

Free teh mememory from a solution vector

Parameters:

solutionIndex

index of solution vector to destroy

Implements itk::fem::LinearSystemWrapper.

virtual void itk::fem::LinearSystemWrapperVNL::DestroyVector

(

unsigned int

vectorIndex

)

[virtual]

Free the memory from a vector

Parameters:

vectorIndex

index of vector to destroy

Implements itk::fem::LinearSystemWrapper.

virtual Float itk::fem::LinearSystemWrapperVNL::GetMatrixValue	(	unsigned int	i,
		unsigned int	j,
		unsigned int	matrixIndex
	)		const [inline, virtual]

Virtual function to get a value of a specific element of a matrix.

Parameters:

i	row of the element
j	column of the element
matrixIndex	index of matrix to get value from

Implements itk::fem::LinearSystemWrapper.

Definition at line 85 of file itkFEMLinearSystemWrapperVNL.h.

References m_Matrices.

virtual Float itk::fem::LinearSystemWrapperVNL::GetSolutionValue	(	unsigned int	i,
		unsigned int	solutionIndex
	)		const [virtual]

Returns value of i-th element in a solution vector. This value is calculated generalized displacement of the i-th degree of freedom in a FEM problem. Note that in general there may be several solution vectors. You can select which one do you want by passing the second parameter.

Parameters:

i	element index in solution vector
solutionIndex	index of solution vector to get value from

Note:

If the solution vector doesn't exist (problem was not yet solved), or the index i is out of range, the function returns 0.0.

Implements itk::fem::Solution.

virtual Float itk::fem::LinearSystemWrapperVNL::GetVectorValue	(	unsigned int	i,
		unsigned int	vectorIndex
	)		const [inline, virtual]

Virtual function to get a value of a specific element of the B vector.

Parameters:

i	row of the element
vectorIndex	index of vector to get value from

Implements itk::fem::LinearSystemWrapper.

Definition at line 100 of file itkFEMLinearSystemWrapperVNL.h.

References m_Vectors.

virtual void itk::fem::LinearSystemWrapperVNL::InitializeMatrix

(

unsigned int

matrixIndex

)

[virtual]

Initialization of the A matrix. First any existing data for matrix A must be be destroyed, and then a new matrix is created in the memory. All elements in A must be set to zero.

Parameters:

matrixIndex

index of matrix to initialize

Implements itk::fem::LinearSystemWrapper.

virtual void itk::fem::LinearSystemWrapperVNL::InitializeSolution

(

unsigned int

solutionIndex

)

[virtual]

Initialization of a solution vector. Existing memory must be destroyed and the new solution vector is created in memory. All values should be set to zero.

Parameters:

solutionIndex

index of solution vector to initialize

Implements itk::fem::LinearSystemWrapper.

virtual void itk::fem::LinearSystemWrapperVNL::InitializeVector

(

unsigned int

vectorIndex

)

[virtual]

Initialization of the a vector. First any existing data for vector B must be destroyed, then new vector is created in the memory. All elements in B must be set to zero.

Implements itk::fem::LinearSystemWrapper.

virtual bool itk::fem::LinearSystemWrapperVNL::IsMatrixInitialized

(

unsigned int

matrixIndex

)

[virtual]

Check to see if matrix is initialized

Parameters:

matrixIndex

index of matrix to examine

Implements itk::fem::LinearSystemWrapper.

virtual bool itk::fem::LinearSystemWrapperVNL::IsSolutionInitialized

(

unsigned int

solutionIndex

)

[virtual]

Check to see if solution vector is initialized

Parameters:

solutionIndex

index of solution vector to examine

Implements itk::fem::LinearSystemWrapper.

virtual bool itk::fem::LinearSystemWrapperVNL::IsVectorInitialized

(

unsigned int

vectorIndex

)

[virtual]

Check to see if vector is initialized

Parameters:

vectorIndex

vector of index to examine

Implements itk::fem::LinearSystemWrapper.

virtual void itk::fem::LinearSystemWrapperVNL::MultiplyMatrixMatrix	(	unsigned int	resultMatrixIndex,
		unsigned int	leftMatrixIndex,
		unsigned int	rightMatrixIndex
	)		[virtual]

Perform a matrix*matrix operation and store the result in the linear system

Parameters:

leftMatrixIndex	index of left matrix
rightMatrixIndex	index of right matrix
resultMatrixIndex	index of matrix where solution is stored

Implements itk::fem::LinearSystemWrapper.

virtual void itk::fem::LinearSystemWrapperVNL::MultiplyMatrixVector	(	unsigned int	resultVectorIndex,
		unsigned int	matrixIndex,
		unsigned int	vectorIndex
	)		[virtual]

Perform a matrix*vector operation and store the result in the linear system

Parameters:

matrixIndex	index of matrix to multiply
vectorIndex	index of vector to multiply
resultVectorIndex	index of vector where result is store

Reimplemented from itk::fem::LinearSystemWrapper.

virtual void itk::fem::LinearSystemWrapperVNL::ScaleMatrix	(	Float	scale,
		unsigned int	matrixIndex
	)		[virtual]

Multiplies all elements of a matrix by a scalar

Parameters:

scale	scalar to multiply all matrix values by
matrixIndex	index of matrix to modify

Reimplemented from itk::fem::LinearSystemWrapper.

virtual void itk::fem::LinearSystemWrapperVNL::SetMatrixValue	(	unsigned int	i,
		unsigned int	j,
		Float	value,
		unsigned int	matrixIndex
	)		[inline, virtual]

Virtual function to set a value of a specific element of the A matrix.

Parameters:

i	row of the element
j	column of the element
value	new value of the element
matrixIndex	index of matrix to set value in

Implements itk::fem::LinearSystemWrapper.

Definition at line 90 of file itkFEMLinearSystemWrapperVNL.h.

virtual void itk::fem::LinearSystemWrapperVNL::SetMaximumNonZeroValuesInMatrix	(	unsigned	int,
		unsigned	int
	)		[inline, virtual]

Definition at line 80 of file itkFEMLinearSystemWrapperVNL.h.

virtual void itk::fem::LinearSystemWrapperVNL::SetSolutionValue	(	unsigned int	i,
		Float	value,
		unsigned int	solutionIndex
	)		[inline, virtual]

Virtual function to set a value of specific element of the solution vector.

Parameters:

i	element Index in solution vector
value	new value of the element
solutionIndex	index of solution vector to set value in

Implements itk::fem::LinearSystemWrapper.

Definition at line 117 of file itkFEMLinearSystemWrapperVNL.h.

virtual void itk::fem::LinearSystemWrapperVNL::SetVectorValue	(	unsigned int	i,
		Float	value,
		unsigned int	vectorIndex
	)		[inline, virtual]

Virtual function to set a value of a specific element of the B vector.

Parameters:

i	row of the element
value	new value of the element
vectorIndex	index of vector to set value in

Implements itk::fem::LinearSystemWrapper.

Definition at line 105 of file itkFEMLinearSystemWrapperVNL.h.

virtual void itk::fem::LinearSystemWrapperVNL::Solve

(

void

)

[virtual]

Solves the linear system and creates the solution vector, which can later be accessed via GetSolutionValue(i,SolutionIndex) member function. Here all the major processing is done with calls to external numeric library.

Note:

This function can only be called after the linear system was properly assembled.

Implements itk::fem::LinearSystemWrapper.

virtual void itk::fem::LinearSystemWrapperVNL::SwapMatrices	(	unsigned int	matrixIndex1,
		unsigned int	matrixIndex2
	)		[virtual]

Swaps access indices of any 2 matrices in the linear system

Parameters:

matrixIndex1	index of a matrix to swap
matrixIndex2	index of matrix to swap with

Implements itk::fem::LinearSystemWrapper.

virtual void itk::fem::LinearSystemWrapperVNL::SwapSolutions	(	unsigned int	solutionIndex1,
		unsigned int	solutionIndex2
	)		[virtual]

Swaps access indices of any 2 solution vectors in the linear system

Parameters:

solutionIndex1	index of a solution vector to swap
solutionIndex2	index of solution vector to swap with

Implements itk::fem::LinearSystemWrapper.

virtual void itk::fem::LinearSystemWrapperVNL::SwapVectors	(	unsigned int	vectorIndex1,
		unsigned int	vectorIndex2
	)		[virtual]

Swaps access indices of any 2 vectors in the linear system

Parameters:

vectorIndex1	index of a vector to swap
vectorIndex2	index of vector to swap with

Implements itk::fem::LinearSystemWrapper.

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Member Data Documentation

MatrixHolder* itk::fem::LinearSystemWrapperVNL::m_Matrices [private]

vector of pointers to VNL sparse matrices

Definition at line 151 of file itkFEMLinearSystemWrapperVNL.h.

Referenced by GetMatrixValue().

std::vector<vnl_vector<Float> *>* itk::fem::LinearSystemWrapperVNL::m_Solutions [private]

vector of pointers to VNL vectors

Definition at line 157 of file itkFEMLinearSystemWrapperVNL.h.

std::vector<vnl_vector<Float> *>* itk::fem::LinearSystemWrapperVNL::m_Vectors [private]

vector of pointers to VNL vectors

Definition at line 154 of file itkFEMLinearSystemWrapperVNL.h.

Referenced by GetVectorValue().

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

• itkFEMLinearSystemWrapperVNL.h