itkRLEImageRegionIterator.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 itkRLEImageRegionIterator_h
#define itkRLEImageRegionIterator_h

#include "itkImageRegionIterator.h"
#include "itkImageRegionIteratorWithIndex.h"
#include "itkRLEImageIterator.h"
#include "itkRLEImageRegionConstIterator.h"

namespace itk
{
template< typename TPixel, unsigned int VImageDimension, typename CounterType >
class ImageRegionIterator< RLEImage< TPixel, VImageDimension, CounterType > > :
  public ImageRegionConstIterator< RLEImage< TPixel, VImageDimension, CounterType > >
{
public:
  typedef ImageRegionIterator                                                          Self;
  typedef ImageRegionConstIterator< RLEImage< TPixel, VImageDimension, CounterType > > Superclass;

  typedef typename Superclass::IndexType         IndexType;
  typedef typename Superclass::SizeType          SizeType;
  typedef typename Superclass::OffsetType        OffsetType;
  typedef typename Superclass::RegionType        RegionType;
  typedef typename Superclass::ImageType         ImageType;
  typedef typename Superclass::InternalPixelType InternalPixelType;
  typedef typename Superclass::PixelType         PixelType;

  ImageRegionIterator()
    : ImageRegionConstIterator< ImageType >()
  {}

  ImageRegionIterator( ImageType* ptr, const RegionType& region )
    : ImageRegionConstIterator< ImageType >( ptr, region )
  {}

  ImageRegionIterator( const ImageIterator< ImageType >& it )
  {
    ImageConstIterator< ImageType >::operator=( it );
  }

  void
  Set( const PixelType& value ) const
  {
    const_cast< ImageType * >( this->m_Image.GetPointer() )->SetPixel(
      *const_cast< typename ImageType::RLLine * >( this->m_RunLengthLine ),
      this->m_SegmentRemainder, this->m_RealIndex, value );
  }

protected:
  ImageRegionIterator( const ImageRegionConstIterator< ImageType >& it )
  {
    ImageConstIterator< ImageType >::operator=( it );
  }

  Self &
  operator=( const ImageRegionConstIterator< ImageType >& it )
  {
    ImageConstIterator< ImageType >::operator=( it );
  }
};

template< typename TPixel, unsigned int VImageDimension, typename CounterType >
class ImageRegionIteratorWithIndex< RLEImage< TPixel, VImageDimension, CounterType > > :
  public ImageRegionConstIteratorWithIndex< RLEImage< TPixel, VImageDimension, CounterType > >
{
public:
  typedef RLEImage< TPixel, VImageDimension, CounterType > ImageType;

  typedef typename itk::ImageConstIterator< RLEImage< TPixel, VImageDimension, CounterType > >::RegionType RegionType;

  ImageRegionIteratorWithIndex()
    : ImageRegionConstIteratorWithIndex< ImageType >()
  {}

  ImageRegionIteratorWithIndex( ImageType* ptr, const RegionType& region )
    : ImageRegionConstIteratorWithIndex< ImageType >( ptr, region )
  {}

  void
  Set( const TPixel& value ) const
  {
    const_cast< ImageType * >( this->m_Image.GetPointer() )->SetPixel(
      *const_cast< typename ImageType::RLLine * >( this->m_RunLengthLine ),
      this->m_SegmentRemainder, this->m_RealIndex, value );
  }

  ImageRegionIteratorWithIndex( const ImageIterator< ImageType >& it )
  {
    ImageRegionConstIteratorWithIndex< ImageType >::operator=( it );
  }

  ImageRegionIteratorWithIndex( const ImageConstIterator< ImageType >& it )
  {
    ImageRegionConstIterator< ImageType >::operator=( it );
  }
}; // no additional implementation required
} // end namespace itk

#endif // itkRLEImageRegionIterator_h