itkPadImageFilter.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 __itkPadImageFilter_h
#define __itkPadImageFilter_h

#include "itkImageToImageFilter.h"

#include "itkImageBoundaryCondition.h"

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

  itkNewMacro(Self);

  typedef typename TOutputImage::RegionType OutputImageRegionType;
  typedef typename TInputImage::RegionType  InputImageRegionType;

  typedef typename TOutputImage::PixelType OutputImagePixelType;
  typedef typename TInputImage::PixelType  InputImagePixelType;

  typedef typename TOutputImage::IndexType    OutputImageIndexType;
  typedef typename TInputImage::IndexType     InputImageIndexType;
  typedef typename TOutputImage::SizeType     OutputImageSizeType;
  typedef typename TInputImage::SizeType      InputImageSizeType;
  typedef typename TInputImage::SizeType      SizeType;
  typedef typename TInputImage::SizeValueType SizeValueType;

  typedef ImageBoundaryCondition< TInputImage, TOutputImage > BoundaryConditionType;
  typedef BoundaryConditionType *                             BoundaryConditionPointerType;

  itkTypeMacro(PadImageFilter, ImageToImageFilter);

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

  itkSetMacro(PadLowerBound, SizeType);
  itkSetMacro(PadUpperBound, SizeType);
  itkGetConstReferenceMacro(PadLowerBound, SizeType);
  itkGetConstReferenceMacro(PadUpperBound, SizeType);
  itkSetVectorMacro(PadLowerBound, const SizeValueType, ImageDimension);
  itkSetVectorMacro(PadUpperBound, const SizeValueType, ImageDimension);

  void SetPadBound(const InputImageSizeType & bound)
  {
    this->SetPadLowerBound(bound);
    this->SetPadUpperBound(bound);
  }

  itkSetMacro(BoundaryCondition, BoundaryConditionPointerType);
  itkGetConstMacro(BoundaryCondition, BoundaryConditionPointerType);

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

  virtual void GenerateOutputInformation();

  virtual void GenerateInputRequestedRegion();

  void ThreadedGenerateData(const OutputImageRegionType & outputRegionForThread,
                            ThreadIdType threadId);

  void InternalSetBoundaryCondition( const BoundaryConditionPointerType boundaryCondition );

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

  SizeType m_PadLowerBound;
  SizeType m_PadUpperBound;

  BoundaryConditionPointerType m_BoundaryCondition;
};
} // end namespace itk

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

#endif