itkCurvatureFlowImageFilter.h

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/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkCurvatureFlowImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2002/09/11 19:39:00 $
  Version:   $Revision: 1.30 $

  Copyright (c) 2002 Insight Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even 
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/
#ifndef __itkCurvatureFlowImageFilter_h_
#define __itkCurvatureFlowImageFilter_h_

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

namespace itk {

template <class TInputImage, class 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(NumberOfIterations, unsigned int);

  itkGetMacro(NumberOfIterations, unsigned int);

  itkSetMacro(TimeStep, TimeStepType);

  itkGetMacro(TimeStep, TimeStepType);
  
protected:
  CurvatureFlowImageFilter();
  ~CurvatureFlowImageFilter() {}
  void PrintSelf(std::ostream& os, Indent indent) const;
  
  virtual bool Halt()
    {
      if (this->GetElapsedIterations() == m_NumberOfIterations) 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
  
  unsigned int    m_NumberOfIterations;
  TimeStepType    m_TimeStep;

};

} // end namspace itk

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

#endif

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