itkExhaustiveOptimizerv4.h

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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 itkExhaustiveOptimizerv4_h
#define itkExhaustiveOptimizerv4_h

#include "itkIntTypes.h"
#include "itkObjectToObjectOptimizerBase.h"

namespace itk
{
template<typename TInternalComputationValueType>
class ITK_TEMPLATE_EXPORT ExhaustiveOptimizerv4:
  public ObjectToObjectOptimizerBaseTemplate<TInternalComputationValueType>
{
public:
  ITK_DISALLOW_COPY_AND_ASSIGN(ExhaustiveOptimizerv4);

  using Self = ExhaustiveOptimizerv4;
  using Superclass = ObjectToObjectOptimizerBaseTemplate<TInternalComputationValueType>;
  using Pointer = SmartPointer< Self >;
  using ConstPointer = SmartPointer< const Self >;

  itkNewMacro(Self);

  itkTypeMacro(ExhaustiveOptimizerv4, Superclass);

  using StepsType = Array< SizeValueType >;

  using MeasureType = typename Superclass::MeasureType;

  using ParametersType = typename Superclass::ParametersType;

  using ScalesType = typename Superclass::ScalesType;

  void StartOptimization(bool doOnlyInitialization = false) override;

  void StartWalking();

  void ResumeWalking();

  void StopWalking();

  itkSetMacro(StepLength, double);
  itkSetMacro(NumberOfSteps, StepsType);
  itkGetConstReferenceMacro(StepLength, double);
  itkGetConstReferenceMacro(NumberOfSteps, StepsType);
  itkGetConstReferenceMacro(CurrentValue, MeasureType);
  itkGetConstReferenceMacro(MaximumMetricValue, MeasureType);
  itkGetConstReferenceMacro(MinimumMetricValue, MeasureType);
  itkGetConstReferenceMacro(MinimumMetricValuePosition, ParametersType);
  itkGetConstReferenceMacro(MaximumMetricValuePosition, ParametersType);
  itkGetConstReferenceMacro(CurrentIndex, ParametersType);

  const std::string GetStopConditionDescription() const override;

  void SetInitialPosition(const ParametersType & param);

  ParametersType & GetInitialPosition()
  {
    return m_InitialPosition;
  }

protected:
  ExhaustiveOptimizerv4();
  ~ExhaustiveOptimizerv4() override = default;
  void PrintSelf(std::ostream & os, Indent indent) const override;

  void AdvanceOneStep();

  void IncrementIndex(ParametersType & param);

protected:
  ParametersType  m_InitialPosition;
  MeasureType     m_CurrentValue;
  StepsType       m_NumberOfSteps;
  bool            m_Stop{false};
  double          m_StepLength{1.0};
  ParametersType  m_CurrentIndex;
  MeasureType     m_MaximumMetricValue;
  MeasureType     m_MinimumMetricValue;
  ParametersType  m_MinimumMetricValuePosition;
  ParametersType  m_MaximumMetricValuePosition;

private:
  std::ostringstream m_StopConditionDescription;
};
} // end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkExhaustiveOptimizerv4.hxx"
#endif

#endif