/usr/include/ITK-4.5/itkFEMLinearSystemWrapperVNL.h is in libinsighttoolkit4-dev 4.5.0-3.
This file is owned by root:root, with mode 0o644.
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*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#ifndef __itkFEMLinearSystemWrapperVNL_h
#define __itkFEMLinearSystemWrapperVNL_h
#include "itkFEMLinearSystemWrapper.h"
#include "vnl/vnl_sparse_matrix.h"
#include "vnl/vnl_vector.h"
#include <vnl/vnl_sparse_matrix_linear_system.h>
#include <vnl/algo/vnl_lsqr.h>
#include <vector>
namespace itk
{
namespace fem
{
/**
* \class LinearSystemWrapperVNL
* \brief LinearSystemWrapper class that uses VNL numeric library functions
* to define a sparse linear system of equations.
* \sa LinearSystemWrapper
* \ingroup ITKFEM
*/
class LinearSystemWrapperVNL : public LinearSystemWrapper
{
public:
/* values stored in matrices & vectors */
typedef LinearSystemWrapper::Float Float;
/* superclass */
typedef LinearSystemWrapper SuperClass;
/* matrix typedef */
typedef vnl_sparse_matrix<Float> MatrixRepresentation;
/* matrix holder typedef */
typedef std::vector<MatrixRepresentation *> MatrixHolder;
/* constructor & destructor */
LinearSystemWrapperVNL() : LinearSystemWrapper(), m_Matrices(0), m_Vectors(0), m_Solutions(0)
{
}
virtual ~LinearSystemWrapperVNL();
/* memory management routines */
virtual void InitializeMatrix(unsigned int matrixIndex);
virtual bool IsMatrixInitialized(unsigned int matrixIndex);
virtual void DestroyMatrix(unsigned int matrixIndex);
virtual void InitializeVector(unsigned int vectorIndex);
virtual bool IsVectorInitialized(unsigned int vectorIndex);
virtual void DestroyVector(unsigned int vectorIndex);
virtual void InitializeSolution(unsigned int solutionIndex);
virtual bool IsSolutionInitialized(unsigned int solutionIndex);
virtual void DestroySolution(unsigned int solutionIndex);
virtual void SetMaximumNonZeroValuesInMatrix(unsigned int, unsigned int)
{
}
/* assembly & solving routines */
virtual Float GetMatrixValue(unsigned int i, unsigned int j,
unsigned int matrixIndex) const
{
return ( *( ( *m_Matrices )[matrixIndex] ) )(i, j);
}
virtual void SetMatrixValue(unsigned int i, unsigned int j, Float value,
unsigned int matrixIndex)
{
( *( ( *m_Matrices )[matrixIndex] ) )(i, j) = value;
}
virtual void AddMatrixValue(unsigned int i, unsigned int j, Float value,
unsigned int matrixIndex)
{
( *( ( *m_Matrices )[matrixIndex] ) )(i, j) += value;
}
virtual Float GetVectorValue(unsigned int i,
unsigned int vectorIndex) const
{
return ( *( ( *m_Vectors )[vectorIndex] ) )[i];
}
virtual void SetVectorValue(unsigned int i, Float value,
unsigned int vectorIndex)
{
( *( ( *m_Vectors )[vectorIndex] ) )(i) = value;
}
virtual void AddVectorValue(unsigned int i, Float value,
unsigned int vectorIndex)
{
( *( ( *m_Vectors )[vectorIndex] ) )(i) += value;
}
virtual Float GetSolutionValue(unsigned int i, unsigned int solutionIndex) const;
virtual void SetSolutionValue(unsigned int i, Float value,
unsigned int solutionIndex)
{
( *( ( *m_Solutions )[solutionIndex] ) )(i) = value;
}
virtual void AddSolutionValue(unsigned int i, Float value,
unsigned int solutionIndex)
{
( *( ( *m_Solutions )[solutionIndex] ) )(i) += value;
}
virtual void Solve(void);
/* matrix & vector manipulation routines */
virtual void ScaleMatrix(Float scale, unsigned int matrixIndex);
virtual void SwapMatrices(unsigned int matrixIndex1, unsigned int matrixIndex2);
virtual void SwapVectors(unsigned int vectorIndex1, unsigned int vectorIndex2);
virtual void SwapSolutions(unsigned int solutionIndex1, unsigned int solutionIndex2);
virtual void CopySolution2Vector(unsigned solutionIndex, unsigned int vectorIndex);
virtual void CopyVector2Solution(unsigned int vectorIndex, unsigned int solutionIndex);
virtual void MultiplyMatrixMatrix(unsigned int resultMatrixIndex, unsigned int leftMatrixIndex,
unsigned int rightMatrixIndex);
virtual void MultiplyMatrixVector(unsigned int resultVectorIndex, unsigned int matrixIndex, unsigned int vectorIndex);
private:
/** vector of pointers to VNL sparse matrices */
// std::vector< vnl_sparse_matrix<Float>* > *m_Matrices;
MatrixHolder *m_Matrices;
/** vector of pointers to VNL vectors */
std::vector<vnl_vector<Float> *> *m_Vectors;
/** vector of pointers to VNL vectors */
std::vector<vnl_vector<Float> *> *m_Solutions;
};
}
} // end namespace itk::fem
#endif
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