itkWhitakerSparseLevelSetImage.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 __itkWhitakerSparseLevelSetImage_h
#define __itkWhitakerSparseLevelSetImage_h

#include "itkLevelSetSparseImageBase.h"
#include "itkLabelObject.h"
#include "itkLabelMap.h"

namespace itk
{
template< typename TOutput, unsigned int VDimension >
class WhitakerSparseLevelSetImage :
    public LevelSetSparseImageBase< TOutput, VDimension >
{
public:
  typedef WhitakerSparseLevelSetImage                     Self;
  typedef SmartPointer< Self >                            Pointer;
  typedef SmartPointer< const Self >                      ConstPointer;
  typedef LevelSetSparseImageBase< TOutput, VDimension >  Superclass;

  itkNewMacro(Self);

  itkTypeMacro(WhitakerSparseLevelSetImage, LevelSetSparseImageBase);

  itkStaticConstMacro ( Dimension, unsigned int, VDimension );

  typedef typename Superclass::InputType        InputType;
  typedef typename Superclass::OutputType       OutputType;
  typedef typename Superclass::OutputRealType   OutputRealType;
  typedef typename Superclass::GradientType     GradientType;
  typedef typename Superclass::HessianType      HessianType;
  typedef typename Superclass::LevelSetDataType LevelSetDataType;

  typedef typename Superclass::LayerIdType            LayerIdType;
  typedef typename Superclass::LabelObjectType        LabelObjectType;
  typedef typename Superclass::LabelObjectPointer     LabelObjectPointer;
  typedef typename Superclass::LabelObjectLengthType  LabelObjectLengthType;
  typedef typename Superclass::LabelObjectLineType    LabelObjectLineType;

  typedef typename Superclass::LabelMapType     LabelMapType;
  typedef typename Superclass::LabelMapPointer  LabelMapPointer;
  typedef typename Superclass::RegionType       RegionType;

  typedef typename Superclass::LayerType          LayerType;
  typedef typename Superclass::LayerIterator      LayerIterator;
  typedef typename Superclass::LayerConstIterator LayerConstIterator;

  typedef typename Superclass::LayerMapType           LayerMapType;
  typedef typename Superclass::LayerMapIterator       LayerMapIterator;
  typedef typename Superclass::LayerMapConstIterator  LayerMapConstIterator;

  using Superclass::Evaluate;
  virtual OutputType Evaluate( const InputType& iP ) const;

#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro( DoubleConvertible,
                    ( Concept::Convertible< OutputRealType, OutputType > ) );

#endif // ITK_USE_CONCEPT_CHECKING

  static inline LayerIdType MinusThreeLayer() { return -3; }
  static inline LayerIdType MinusTwoLayer() { return -2; }
  static inline LayerIdType MinusOneLayer() { return -1; }
  static inline LayerIdType ZeroLayer() { return 0; }
  static inline LayerIdType PlusOneLayer() { return 1; }
  static inline LayerIdType PlusTwoLayer() { return 2; }
  static inline LayerIdType PlusThreeLayer() { return 3; }

  template< class TLabel >
  typename LabelObject< TLabel, Dimension >::Pointer
  GetAsLabelObject()
    {
    typedef LabelObject< TLabel, Dimension > OutputLabelObjectType;
    typename OutputLabelObjectType::Pointer object = OutputLabelObjectType::New();

    for( LayerIdType status = this->MinusThreeLayer(); status < this->PlusOneLayer(); status++ )
      {
      LabelObjectPointer labelObject = this->m_LabelMap->GetLabelObject( status );

      for( SizeValueType i = 0; i < labelObject->GetNumberOfLines(); i++ )
        {
        object->AddLine( labelObject->GetLine( i ) );
        }
      }
    object->Optimize();

    return object;
    }

protected:

  WhitakerSparseLevelSetImage();
  virtual ~WhitakerSparseLevelSetImage();

  virtual void InitializeLayers();

  virtual void InitializeInternalLabelList();

private:

  WhitakerSparseLevelSetImage( const Self& ); // purposely not implemented
  void operator = ( const Self& ); // purposely not implemented
};
}

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

#endif // __itkWhitakerSparseLevelSetImage_h