itkLevelSetFunction.h

Go to the documentation of this file.

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkLevelSetFunction.h,v $
  Language:  C++
  Date:      $Date: 2002/09/30 16:37:52 $
  Version:   $Revision: 1.3 $

  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 __itkLevelSetFunction_h_
#define __itkLevelSetFunction_h_

#include "itkLevelSetFunctionBase.h"

namespace itk {

template <class TImageType>
class ITK_EXPORT LevelSetFunction
  : public LevelSetFunctionBase<TImageType>
{
public:
  typedef LevelSetFunction Self;
  typedef LevelSetFunctionBase<TImageType> Superclass;
  typedef SmartPointer<Self> Pointer;
  typedef SmartPointer<const Self> ConstPointer;

  itkNewMacro(Self);

  itkTypeMacro( LevelSetFunction, LevelSetFunctionBase );

  typedef typename Superclass::ImageType ImageType;

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

  typedef typename Superclass::PixelType        PixelType;
  typedef typename Superclass::TimeStepType     TimeStepType;
  typedef typename Superclass::ScalarValueType  ScalarValueType;
  typedef typename Superclass::RadiusType       RadiusType;
  typedef typename Superclass::NeighborhoodType NeighborhoodType;
  typedef typename Superclass::BoundaryNeighborhoodType
                   BoundaryNeighborhoodType;
  typedef typename Superclass::VectorType VectorType;
  typedef typename Superclass::FloatOffsetType FloatOffsetType;

  virtual PixelType ComputeUpdate(const NeighborhoodType &neighborhood,
                                  void *globalData,
                                  const FloatOffsetType& = m_ZeroOffset) const;
  virtual PixelType ComputeUpdate(const BoundaryNeighborhoodType
                                  &neighborhood, void * globalData,
                                  const FloatOffsetType& = m_ZeroOffset) const;

  virtual TimeStepType ComputeGlobalTimeStep(void *GlobalData) const;

  virtual void *GetGlobalDataPointer() const
    {
      GlobalDataStruct *ans = new GlobalDataStruct();
      ans->m_MaxAdvectionChange   = NumericTraits<ScalarValueType>::Zero;
      ans->m_MaxPropagationChange = NumericTraits<ScalarValueType>::Zero;
      return ans; 
    }

  virtual void Initialize(const RadiusType &r);
  
  virtual void ReleaseGlobalDataPointer(void *GlobalData) const
    { delete (GlobalDataStruct *) GlobalData; }

protected:
  struct GlobalDataStruct
  {
    ScalarValueType m_MaxAdvectionChange;
    ScalarValueType m_MaxPropagationChange;
  };
  
  LevelSetFunction() {}
  ~LevelSetFunction() {}
  void PrintSelf(std::ostream& os, Indent indent) const
    {
      Superclass::PrintSelf(os, indent );
      os << indent << "WaveDT: " << m_WaveDT << std::endl;
      os << indent << "DT: " << m_DT << std::endl;
    }
  
  static double m_WaveDT;
  static double m_DT;

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

  std::slice  x_slice[ImageDimension];

  ::size_t m_Center;

  ::size_t m_xStride[ImageDimension];
};

} // namespace itk

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

#endif

---