itkAttributeUniqueLabelMapFilter.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 __itkAttributeUniqueLabelMapFilter_h
#define __itkAttributeUniqueLabelMapFilter_h

#include "itkInPlaceLabelMapFilter.h"
#include "itkAttributeLabelObject.h"

namespace itk {
template<typename TImage, typename TAttributeAccessor=
    typename Functor::AttributeLabelObjectAccessor< typename TImage::LabelObjectType > >
class AttributeUniqueLabelMapFilter :
    public InPlaceLabelMapFilter<TImage>
{
public:
  typedef AttributeUniqueLabelMapFilter Self;
  typedef InPlaceLabelMapFilter<TImage> Superclass;
  typedef SmartPointer<Self>            Pointer;
  typedef SmartPointer<const Self>      ConstPointer;

  typedef TImage                              ImageType;
  typedef typename ImageType::Pointer         ImagePointer;
  typedef typename ImageType::ConstPointer    ImageConstPointer;
  typedef typename ImageType::PixelType       PixelType;
  typedef typename ImageType::IndexType       IndexType;
  typedef typename ImageType::LabelObjectType LabelObjectType;

  typedef TAttributeAccessor                                 AttributeAccessorType;
  typedef typename AttributeAccessorType::AttributeValueType AttributeValueType;

  typedef typename LabelObjectType::LineType  LineType;

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

  itkNewMacro(Self);

  itkTypeMacro(AttributeUniqueLabelMapFilter,
               InPlaceLabelMapFilter);

#ifdef ITK_USE_CONCEPT_CHECKING
  // Begin concept checking
/*  itkConceptMacro(InputEqualityComparableCheck,
    (Concept::EqualityComparable<InputImagePixelType>));
  itkConceptMacro(IntConvertibleToInputCheck,
    (Concept::Convertible<int, InputImagePixelType>));
  itkConceptMacro(InputOStreamWritableCheck,
    (Concept::OStreamWritable<InputImagePixelType>));*/
  // End concept checking
#endif

  itkSetMacro( ReverseOrdering, bool );
  itkGetConstReferenceMacro( ReverseOrdering, bool );
  itkBooleanMacro( ReverseOrdering );

protected:
  AttributeUniqueLabelMapFilter();
  ~AttributeUniqueLabelMapFilter() {};

  void GenerateData();

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

  bool m_ReverseOrdering;

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

  struct LineOfLabelObject
    {
    typedef typename LabelObjectType::LineType LineType;

    LineOfLabelObject( const LineType l, LabelObjectType * lo )
      {
      this->line = l;
      this->labelObject = lo;
      }
    LineType          line;
    LabelObjectType * labelObject;
    };

  class LineOfLabelObjectComparator
    {
    public:
      bool operator()( const LineOfLabelObject & lla, const LineOfLabelObject & llb )
        {
        for( int i=ImageDimension-1; i>=0; i-- )
          {
          if( lla.line.GetIndex()[i] > llb.line.GetIndex()[i] )
            {
            return true;
            }
          else if( lla.line.GetIndex()[i] < llb.line.GetIndex()[i] )
            {
            return false;
            }
          }
        return false;
        }
    };

}; // end of class

} // end namespace itk

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

#endif