/*=========================================================================
 *
 *  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 itkLevelSetEvolutionStoppingCriterion_h
#define itkLevelSetEvolutionStoppingCriterion_h

#include "itkStoppingCriterionBase.h"
#include "itkNumericTraits.h"
#include "itkIntTypes.h"

namespace itk
{
 /** \class LevelSetEvolutionStoppingCriterion
  \ingroup ITKLevelSetsv4
  */
 template< typename TLevelSetContainer >
 class ITK_TEMPLATE_EXPORT LevelSetEvolutionStoppingCriterion : public StoppingCriterionBase
 {
 public:
   ITK_DISALLOW_COPY_AND_ASSIGN(LevelSetEvolutionStoppingCriterion);

   using Self = LevelSetEvolutionStoppingCriterion;
   using Superclass = StoppingCriterionBase;
   using Pointer = SmartPointer< Self >;
   using ConstPointer = SmartPointer< const Self >;

   /** Run-time type information (and related methods). */
   itkTypeMacro(LevelSetEvolutionStoppingCriterion, StoppingCriterionBase);

   using LevelSetContainerType = TLevelSetContainer;
   using LevelSetContainerPointer = typename LevelSetContainerType::Pointer;

   using LevelSetIdentifierType = typename LevelSetContainerType::LevelSetIdentifierType;

   using LevelSetType = typename LevelSetContainerType::LevelSetType;
   using LevelSetPointer = typename LevelSetContainerType::LevelSetPointer;

   using InputIndexType = typename LevelSetContainerType::InputIndexType;
   using OutputType = typename LevelSetContainerType::OutputType;
   using OutputRealType = typename LevelSetContainerType::OutputRealType;
   using GradientType = typename LevelSetContainerType::GradientType;
   using HessianType = typename LevelSetContainerType::HessianType;

   using HeavisideType = typename LevelSetContainerType::HeavisideType;
   using HeavisidePointer = typename LevelSetContainerType::HeavisideType;

   using IterationIdType = IdentifierType;

   itkSetObjectMacro( LevelSetContainer, LevelSetContainerType );
   itkGetModifiableObjectMacro(LevelSetContainer, LevelSetContainerType );

   itkSetMacro( NumberOfIterations, IterationIdType );
   itkGetMacro( NumberOfIterations, IterationIdType );

   itkSetMacro( CurrentIteration, IterationIdType );
   itkGetMacro( CurrentIteration, IterationIdType );

   itkSetMacro( RMSChangeAccumulator, OutputRealType );
   itkGetMacro( RMSChangeAccumulator, OutputRealType );

 protected:
   /** Constructor */
   LevelSetEvolutionStoppingCriterion();

   /** Destructor */
   ~LevelSetEvolutionStoppingCriterion() override = default;

   LevelSetContainerPointer m_LevelSetContainer;
   OutputRealType           m_RMSChangeAccumulator;
   IterationIdType          m_NumberOfIterations;
   IterationIdType          m_CurrentIteration;
 };
 }
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkLevelSetEvolutionStoppingCriterion.hxx"
#endif
#endif
