itkVectorExpandImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkVectorExpandImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2009-05-19 20:36:25 $
  Version:   $Revision: 1.17 $

  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 __itkVectorExpandImageFilter_h
#define __itkVectorExpandImageFilter_h

#include "itkImageToImageFilter.h"
#include "itkVectorInterpolateImageFunction.h"
#include "itkVectorLinearInterpolateImageFunction.h"

namespace itk
{

template <class TInputImage, class TOutputImage>
class ITK_EXPORT VectorExpandImageFilter:
  public ImageToImageFilter<TInputImage,TOutputImage>
{
public:
  typedef VectorExpandImageFilter                       Self;
  typedef ImageToImageFilter<TInputImage,TOutputImage>  Superclass;
  typedef SmartPointer<Self>                            Pointer;
  typedef SmartPointer<const Self>                      ConstPointer;

  itkNewMacro(Self);  

  typedef typename TInputImage::Pointer     InputImagePointer;
  typedef typename TOutputImage::Pointer    OutputImagePointer;
  typedef typename TOutputImage::RegionType OutputImageRegionType;

  itkTypeMacro(VectorExpandImageFilter, ImageToImageFilter);

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

  typedef typename Superclass::InputImageType  InputImageType;
  typedef typename Superclass::OutputImageType OutputImageType;

  typedef typename OutputImageType::PixelType  OutputPixelType;
  typedef typename OutputPixelType::ValueType  OutputValueType;
  typedef typename InputImageType::PixelType   InputPixelType;
  typedef typename InputPixelType::ValueType   InputValueType;

  enum { VectorDimension = InputPixelType::Dimension };

  typedef float  ExpandFactorsType;

  typedef double                             CoordRepType;
  typedef VectorInterpolateImageFunction<InputImageType,CoordRepType> 
                                             InterpolatorType;
  typedef typename InterpolatorType::Pointer InterpolatorPointer;
  typedef VectorLinearInterpolateImageFunction<InputImageType,CoordRepType> 
                                             DefaultInterpolatorType;

  itkSetObjectMacro( Interpolator, InterpolatorType );

  itkGetObjectMacro( Interpolator, InterpolatorType );

  virtual void SetExpandFactors( const ExpandFactorsType factors[] );
  virtual void SetExpandFactors( const ExpandFactorsType factor );
  virtual void SetExpandFactors( const unsigned int factors[] );

  const ExpandFactorsType * GetExpandFactors() const
    { return m_ExpandFactors; }

  virtual void SetEdgePaddingValue( const OutputPixelType& value );

  virtual const OutputPixelType& GetEdgePaddingValue()
    { return m_EdgePaddingValue; }

  virtual void GenerateOutputInformation();

  virtual void GenerateInputRequestedRegion();

#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro(InputHasNumericTraitsCheck,
                  (Concept::HasNumericTraits<InputValueType>));
  itkConceptMacro(OutputHasNumericTraitsCheck,
                  (Concept::HasNumericTraits<OutputValueType>));
#endif

protected:

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

  virtual
  void ThreadedGenerateData(const OutputImageRegionType& outputRegionForThread,
                            int threadId );
  
  virtual void BeforeThreadedGenerateData();

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

  ExpandFactorsType      m_ExpandFactors[ImageDimension];
  InterpolatorPointer    m_Interpolator;
  OutputPixelType        m_EdgePaddingValue;
 
};

} // end namespace itk

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

#endif