itkSingleValuedNonLinearVnlOptimizerv4.h

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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
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 *         https://www.apache.org/licenses/LICENSE-2.0.txt
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 *  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.
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#ifndef itkSingleValuedNonLinearVnlOptimizerv4_h
#define itkSingleValuedNonLinearVnlOptimizerv4_h
 
#include "ITKOptimizersv4Export.h"
 
#include "itkObjectToObjectOptimizerBase.h"
#include "itkSingleValuedVnlCostFunctionAdaptorv4.h"
#include "itkCommand.h"
 
#include <memory> // For unique_ptr.
 
namespace itk
{
class ITKOptimizersv4_EXPORT SingleValuedNonLinearVnlOptimizerv4 : public ObjectToObjectOptimizerBaseTemplate<double>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(SingleValuedNonLinearVnlOptimizerv4);

  using Self = SingleValuedNonLinearVnlOptimizerv4;
  using Superclass = ObjectToObjectOptimizerBase;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;

  itkOverrideGetNameOfClassMacro(SingleValuedNonLinearVnlOptimizerv4);

  using CommandType = ReceptorMemberCommand<Self>;
 
  using MetricType = Superclass::MetricType;
  using DerivativeType = Superclass::DerivativeType;
  using ParametersType = Superclass::ParametersType;
  using ScalesType = Superclass::ScalesType;

  using StopConditionReturnStringType = Superclass::StopConditionReturnStringType;

  using StopConditionDescriptionType = Superclass::StopConditionDescriptionType;
 
  void
  StartOptimization(bool doOnlyInitialization = false) override;

  void
  SetMetric(MetricType * metric) override = 0;

  itkGetConstReferenceMacro(CachedDerivative, DerivativeType);
  itkGetConstReferenceMacro(CachedCurrentPosition, ParametersType);

  StopConditionReturnStringType
  GetStopConditionDescription() const override = 0;
 
protected:
  SingleValuedNonLinearVnlOptimizerv4();
  ~SingleValuedNonLinearVnlOptimizerv4() override;
 
  using CostFunctionAdaptorType = SingleValuedVnlCostFunctionAdaptorv4;
 
  void
  SetCostFunctionAdaptor(CostFunctionAdaptorType * adaptor);
 
  const CostFunctionAdaptorType *
  GetCostFunctionAdaptor() const;
 
  CostFunctionAdaptorType *
  GetCostFunctionAdaptor();

  CostFunctionAdaptorType *
  GetNonConstCostFunctionAdaptor() const;

  void
  PrintSelf(std::ostream & os, Indent indent) const override;
 
private:
  void
  IterationReport(const EventObject & event);
 
  std::unique_ptr<CostFunctionAdaptorType> m_CostFunctionAdaptor;
 
  CommandType::Pointer m_Command{};
 
  mutable ParametersType m_CachedCurrentPosition{};
  mutable DerivativeType m_CachedDerivative{};
};
} // end namespace itk
 
#endif