itkCurvatureFlowImageFilter.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 __itkCurvatureFlowImageFilter_h
#define __itkCurvatureFlowImageFilter_h

#include "itkDenseFiniteDifferenceImageFilter.h"
#include "itkCurvatureFlowFunction.h"

namespace itk
{
template< typename TInputImage, typename TOutputImage >
class CurvatureFlowImageFilter:
  public DenseFiniteDifferenceImageFilter< TInputImage, TOutputImage >
{
public:
  typedef CurvatureFlowImageFilter                                      Self;
  typedef DenseFiniteDifferenceImageFilter< TInputImage, TOutputImage > Superclass;
  typedef SmartPointer< Self >                                          Pointer;
  typedef SmartPointer< const Self >                                    ConstPointer;

  itkNewMacro(Self);

  itkTypeMacro(CurvatureFlowImageFilter,
               DenseFiniteDifferenceImageFilter);

  typedef typename Superclass::InputImageType InputImageType;

  typedef typename Superclass::OutputImageType OutputImageType;
  typedef typename OutputImageType::Pointer    OutputImagePointer;

  typedef typename Superclass::FiniteDifferenceFunctionType
  FiniteDifferenceFunctionType;

  typedef CurvatureFlowFunction< OutputImageType >
  CurvatureFlowFunctionType;

  itkStaticConstMacro(ImageDimension, unsigned int, Superclass::ImageDimension);

  typedef typename Superclass::PixelType PixelType;

  typedef typename Superclass::TimeStepType TimeStepType;

  itkSetMacro(TimeStep, TimeStepType);

  itkGetConstMacro(TimeStep, TimeStepType);

#ifdef ITK_USE_CONCEPT_CHECKING
  // Begin concept checking
  itkConceptMacro( DoubleConvertibleToOutputCheck,
                   ( Concept::Convertible< double, PixelType > ) );
  itkConceptMacro( OutputConvertibleToDoubleCheck,
                   ( Concept::Convertible< PixelType, double > ) );
  itkConceptMacro( OutputDivisionOperatorsCheck,
                   ( Concept::DivisionOperators< PixelType > ) );
  itkConceptMacro( DoubleOutputMultiplyOperatorCheck,
                   ( Concept::MultiplyOperator< double, PixelType, PixelType > ) );
  itkConceptMacro( IntOutputMultiplyOperatorCheck,
                   ( Concept::MultiplyOperator< int, PixelType, PixelType > ) );
  itkConceptMacro( OutputLessThanDoubleCheck,
                   ( Concept::LessThanComparable< PixelType, double > ) );
  itkConceptMacro( OutputDoubleAdditiveOperatorsCheck,
                   ( Concept::AdditiveOperators< PixelType, double > ) );
  // End concept checking
#endif

protected:
  CurvatureFlowImageFilter();
  ~CurvatureFlowImageFilter() {}
  void PrintSelf(std::ostream & os, Indent indent) const;

  virtual bool Halt()
  {
    if ( this->GetElapsedIterations() == this->GetNumberOfIterations() )
      {
      return true;
      }
    else
      {
      return false;
      }
  }

  virtual void InitializeIteration();

  virtual void EnlargeOutputRequestedRegion(DataObject *);

  virtual void GenerateInputRequestedRegion();

private:
  CurvatureFlowImageFilter(const Self &); //purposely not implemented
  void operator=(const Self &);           //purposely not implemented

  TimeStepType m_TimeStep;
};
} // end namspace itk

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

#endif