itkConnectedRegionsMeshFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkConnectedRegionsMeshFilter.h,v $
  Language:  C++
  Date:      $Date: 2002/09/11 19:39:00 $
  Version:   $Revision: 1.22 $

  Copyright (c) 2002 Insight Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.

  Portions of this code are covered under the VTK copyright.
  See VTKCopyright.txt or http://www.kitware.com/VTKCopyright.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 __itkConnectedRegionsMeshFilter_h
#define __itkConnectedRegionsMeshFilter_h

#include "itkMeshToMeshFilter.h"

namespace itk
{
  
template <class TInputMesh, class TOutputMesh>
class ITK_EXPORT ConnectedRegionsMeshFilter :
    public MeshToMeshFilter<TInputMesh,TOutputMesh> 
{
public:
  typedef ConnectedRegionsMeshFilter  Self;

  typedef MeshToMeshFilter<TInputMesh,TOutputMesh>   Superclass;

  typedef SmartPointer<Self>   Pointer;
  typedef SmartPointer<const Self>  ConstPointer;


  typedef TInputMesh InputMeshType;
  typedef TOutputMesh OutputMeshType;
  typedef typename TInputMesh::Pointer InputMeshPointer;
  typedef typename TOutputMesh::Pointer OutputMeshPointer;
  itkStaticConstMacro(PointDimension, unsigned int,TInputMesh::PointDimension);
  typedef typename TInputMesh::PointType InputMeshPointType;
  typedef typename TInputMesh::PointIdentifier InputMeshPointIdentifier;
  typedef typename TInputMesh::PointsContainerPointer 
                   InputMeshPointsContainerPointer;
  typedef typename TInputMesh::CellsContainer InputMeshCellsContainer;
  typedef typename TInputMesh::CellsContainerPointer 
                   InputMeshCellsContainerPointer;
  typedef typename TInputMesh::CellDataContainer InputMeshCellDataContainer;
  typedef typename TInputMesh::CellDataContainerPointer 
                   InputMeshCellDataContainerPointer;
  typedef typename InputMeshType::PointsContainer::ConstIterator 
                   PointsContainerConstIterator;
  typedef typename InputMeshType::CellsContainer::ConstIterator
                   CellsContainerConstIterator;
  typedef typename InputMeshType::CellDataContainer::ConstIterator
                   CellDataContainerConstIterator;
  typedef typename TInputMesh::CellAutoPointer InputMeshCellPointer;
  typedef typename TInputMesh::CellTraits::PointIdConstIterator 
                   InputMeshPointIdConstIterator;
  typedef typename TInputMesh::CellLinksContainerPointer
                   InputMeshCellLinksContainerPointer;
  typedef typename TInputMesh::PointCellLinksContainer
                   InputMeshCellLinksContainer;
  typedef typename TInputMesh::CellIdentifier InputMeshCellIdentifier;

  itkNewMacro(Self);
  
  enum { PointSeededRegions = 0,
         CellSeededRegions = 1,
         SpecifiedRegions = 2,
         LargestRegion = 3,
         AllRegions = 4,
         ClosestPointRegion = 5 };
  
  itkSetMacro(ExtractionMode,int);
  itkGetMacro(ExtractionMode,int);
  void SetExtractionModeToPointSeededRegions ()
    {this->SetExtractionMode(Self::PointSeededRegions);}
  void SetExtractionModeToCellSeededRegions ()
    {this->SetExtractionMode(Self::CellSeededRegions);}
  void SetExtractionModeToSpecifiedRegions ()
    {this->SetExtractionMode(Self::SpecifiedRegions);}
  void SetExtractionModeToLargestRegion ()
    {this->SetExtractionMode(Self::LargestRegion);}
  void SetExtractionModeToAllRegions ()
    {this->SetExtractionMode(Self::AllRegions);}
  void SetExtractionModeToClosestPointRegion ()
    {this->SetExtractionMode(Self::ClosestPointRegion);}

  void InitializeSeedList()
    {this->Modified(); m_SeedList.clear();}

  void AddSeed(unsigned long id)
    {this->Modified(); m_SeedList.push_back(id);}

  void DeleteSeed(unsigned long id);

  void InitializeSpecifiedRegionList()
    {this->Modified(); m_RegionList.clear();}

  void AddSpecifiedRegion(unsigned long id)
    {this->Modified(); m_RegionList.push_back(id);}

  void DeleteSpecifiedRegion(unsigned long id);

  void SetClosestPoint(InputMeshPointType& p)
    {
      if ( m_ClosestPoint != p )
        {
        m_ClosestPoint = p;
        this->Modified();
        }
    }
  InputMeshPointType& GetClosestPoint(InputMeshPointType& p)
    {return m_ClosestPoint;}

  unsigned long GetNumberOfExtractedRegions();

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

  virtual void GenerateData();
  void PropagateConnectedWave();

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

  int                        m_ExtractionMode;
  InputMeshPointType         m_ClosestPoint;
  std::vector<unsigned long> m_SeedList;
  std::vector<unsigned long> m_RegionList;
  std::vector<unsigned long> m_RegionSizes;
  
  std::vector<long>          m_Visited;
  unsigned long              m_NumberOfCellsInRegion;
  unsigned long              m_RegionNumber;
  std::vector<unsigned long> *m_Wave;
  std::vector<unsigned long> *m_Wave2;
  
}; // class declaration

} // end namespace itk

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

#endif

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