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/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://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 itkFEMSolverHyperbolic_h
#define itkFEMSolverHyperbolic_h
#include "itkFEMSolver.h"
namespace itk
{
namespace fem
{
/**
* \class SolverHyperbolic
* \brief Solver class suitable for hyperbolic problems.
* \ingroup ITKFEM
*
* M*ddu + C*du + K*u=F
*/
template <unsigned int TDimension = 3>
class ITK_TEMPLATE_EXPORT SolverHyperbolic : public Solver<TDimension>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(SolverHyperbolic);
using Self = SolverHyperbolic;
using Superclass = Solver<TDimension>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(SolverHyperbolic);
using Float = Element::Float;
/** Get/Set Gamma. */
itkSetMacro(Gamma, Float);
itkGetMacro(Gamma, Float);
/** Get/Set Beta. */
itkSetMacro(Beta, Float);
itkGetMacro(Beta, Float);
/** Get/Set Number of Iterations. */
itkSetMacro(NumberOfIterations, unsigned int);
itkGetMacro(NumberOfIterations, unsigned int);
/** Returns the time step used for dynamic problems. */
Float
GetTimeStep() const override
{
return this->m_TimeStep;
}
/**
* Sets the time step used for the problems.
*
* \param dt New time step.
*/
void
SetTimeStep(Float dt) override
{
this->m_TimeStep = dt;
}
protected:
SolverHyperbolic();
~SolverHyperbolic() override = default;
void
PrintSelf(std::ostream & os, Indent indent) const override;
/** Initialize the linear system wrapper. */
void
InitializeLinearSystemWrapper() override;
/**
* When assembling the element matrix into master matrix, we
* need to assemble the mass matrix too.
*/
void
AssembleElementMatrix(Element::Pointer e) override;
/** Initialize the storage for all master matrices. */
void
InitializeMatrixForAssembly(unsigned int N) override;
/**
* Combine the M, C and K matrices into one big system of linear
* equations.
*/
void
FinalizeMatrixAfterAssembly() override;
/** Method invoked by the pipeline in order to trigger the computation. */
void
GenerateData() override;
/** Solve for the displacement vector u at a given time.
* Update the total solution as well. */
void
RunSolver() override;
/** Solve for the displacement vector u for one iteration. */
void
Solve();
/** Constants that specify where matrices are stored. */
enum
{
matrix_K = 1,
matrix_M = 2,
matrix_C = 3,
matrix_tmp = 4
};
/** Constants that specify where vectors are stored. */
enum
{
solution_d = 0,
solution_v = 1,
solution_a = 2
};
enum
{
vector_dhat = 2,
vector_vhat = 3,
vector_ahat = 4,
vector_tmp = 5
};
Float m_TimeStep{};
Float m_Gamma{};
Float m_Beta{};
unsigned int m_NumberOfIterations{};
};
} // end namespace fem
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkFEMSolverHyperbolic.hxx"
#endif
#endif // itkFEMSolverHyperbolic_h
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