itkVectorLinearInterpolateNearestNeighborExtrapolateImageFunction.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkVectorLinearInterpolateNearestNeighborExtrapolateImageFunction.h,v $
  Language:  C++
  Date:      $Date: 2008-07-15 13:55:37 $
  Version:   $Revision: 1.5 $

  Copyright (c) Insight Software 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 __itkVectorLinearInterpolateNearestNeighborExtrapolateImageFunction_h
#define __itkVectorLinearInterpolateNearestNeighborExtrapolateImageFunction_h

#include "itkVectorInterpolateImageFunction.h"

namespace itk
{

template <class TInputImage, class TCoordRep = float>
class ITK_EXPORT VectorLinearInterpolateNearestNeighborExtrapolateImageFunction :
      public VectorInterpolateImageFunction<TInputImage,TCoordRep>
{
public:

  typedef VectorLinearInterpolateNearestNeighborExtrapolateImageFunction Self;
  typedef VectorInterpolateImageFunction<TInputImage,TCoordRep>          Superclass;
  typedef SmartPointer<Self>                                             Pointer;
  typedef SmartPointer<const Self>                                       ConstPointer;

  itkNewMacro(Self);

  itkTypeMacro(VectorLinearInterpolateNearestNeighborExtrapolateImageFunction,
               VectorInterpolateImageFunction);

  typedef typename Superclass::InputImageType                           InputImageType;
  typedef typename Superclass::PixelType                                PixelType;
  typedef typename Superclass::ValueType                                ValueType;
  typedef typename Superclass::RealType                                 RealType;

  typedef typename Superclass::PointType                                PointType;

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

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

  typedef typename Superclass::IndexType                               IndexType;

  typedef typename Superclass::ContinuousIndexType                     ContinuousIndexType;

  typedef typename Superclass::OutputType                              OutputType;

  virtual bool IsInsideBuffer( const IndexType & ) const
    { 
    return true;
    }

  virtual bool IsInsideBuffer( const PointType & ) const
    {
    return true;
    }

  virtual bool IsInsideBuffer( const ContinuousIndexType & ) const
    {
    return true;
    }

  virtual OutputType EvaluateAtContinuousIndex(
     const ContinuousIndexType & index ) const;

  virtual OutputType EvaluateAtIndex( const IndexType & index ) const;

protected:
  VectorLinearInterpolateNearestNeighborExtrapolateImageFunction();
  virtual ~VectorLinearInterpolateNearestNeighborExtrapolateImageFunction() {}

  virtual void PrintSelf(std::ostream& os, Indent indent) const;

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

  static const unsigned long  m_Neighbors;

};

} // end namespace itk

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

#endif

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