itkTriangleMeshToSimplexMeshFilter.h

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

Program:   Insight Segmentation & Registration Toolkit
Module:    $RCSfile: itkTriangleMeshToSimplexMeshFilter.h,v $
Language:  C++
Date:      $Date: 2009-05-12 17:23:01 $
Version:   $Revision: 1.6 $

Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.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 __itkTriangleMeshToSimplexMeshFilter_h
#define __itkTriangleMeshToSimplexMeshFilter_h

#include <itkMesh.h>
#include <itkLineCell.h>
#include <itkVertexCell.h>
#include <itkMapContainer.h>
#include "itkSimplexMesh.h"
#include "itkSimplexMeshGeometry.h"
#include "itkMeshToMeshFilter.h"
#include "itkVectorContainer.h"
#include "itkNumericTraits.h"

#include <itkPolygonCell.h>
namespace itk
{
template <class TInputMesh, class TOutputMesh>
class ITK_EXPORT TriangleMeshToSimplexMeshFilter : public MeshToMeshFilter<TInputMesh, TOutputMesh>
{
public:

  typedef TriangleMeshToSimplexMeshFilter  Self;

  typedef MeshToMeshFilter<TInputMesh, TOutputMesh> Superclass;

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

  itkNewMacro(Self);

  itkTypeMacro(TriangleMeshToSimplexMeshFilter,MeshToMeshFilter);

  typedef TInputMesh                     InputMeshType;
  typedef typename TInputMesh::Pointer   InputMeshPointer;
  typedef typename TInputMesh::PointType InputPointType;

  typedef typename TInputMesh::BoundaryAssignmentsContainerPointer InputBoundaryAssignmentsContainerPointer;

  typedef typename TInputMesh::PointsContainer    InputPointsContainer;
  typedef typename InputPointsContainer::Pointer  InputPointsContainerPointer;
  typedef typename InputPointsContainer::Iterator InputPointsContainerIterator;

  typedef typename TOutputMesh::Pointer                   OutputMeshPointer;
  typedef typename TOutputMesh::PointType                 OutputPointType;
  typedef typename TOutputMesh::PixelType                 OutputPixelType;
  typedef typename TOutputMesh::PointsContainer           OutputPointsContainer;
  typedef typename OutputPointsContainer::Pointer         OutputPointsContainerPointer;
  typedef typename TOutputMesh::PointsContainer::Iterator OutputPointsContainerIterator;

  typedef typename TInputMesh::BoundaryAssignmentIdentifier InputBoundnaryAssignmentIdentifier;

  typedef typename TInputMesh::CellType             InputCellType;
  typedef typename InputCellType::CellAutoPointer   InputCellAutoPointer;
  typedef typename TInputMesh::CellAutoPointer      CellAutoPointer;
  typedef          itk::LineCell<InputCellType>     LineType;
  typedef          itk::PolygonCell<InputCellType>  PolygonType;
  typedef          itk::TriangleCell<InputCellType> TriangleType;
  typedef          itk::VertexCell<InputCellType>   VertexType;

  typedef          std::pair<unsigned long,unsigned long> EdgeIdentifierType;
  typedef          std::set<unsigned long>                IndexSetType;

  typedef          itk::MapContainer<unsigned long, EdgeIdentifierType> EdgeNeighborListType;
  typedef          itk::MapContainer<EdgeIdentifierType, unsigned long> LineCellIndexType;

  typedef          itk::MapContainer<unsigned long, IndexSetType>       VertexNeighborListType;
    typedef          itk::MapContainer<EdgeIdentifierType,unsigned long>  EdgeMapType;
  typedef typename EdgeMapType::Pointer                                 EdgeMapPointer;

  typedef          itk::VectorContainer<unsigned long,unsigned long>    IdVectorType;
  typedef typename IdVectorType::Pointer                                IdVectorPointer;

  typedef typename TOutputMesh::CellType             OutputCellType;
  typedef typename TOutputMesh::CellAutoPointer      OutputCellAutoPointer;
  typedef          itk::LineCell<OutputCellType>     OutputLineType;
  typedef          itk::PolygonCell<OutputCellType>  OutputPolygonType;

protected:

  TriangleMeshToSimplexMeshFilter();
  ~TriangleMeshToSimplexMeshFilter();
  TriangleMeshToSimplexMeshFilter(const Self&) {}

  void operator=(const Self&) {}

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

  virtual void GenerateData();

  void Initialize();

  void CreateSimplexPoints();

  void CreateEdgeForTrianglePair( unsigned long pointIndex, unsigned long boundaryId);

  void CreateSimplexNeighbors();

  void CreateCells();

  void CreateNewEdge(unsigned long currentCellId, unsigned int featureId, 
    unsigned long startPointId, unsigned long endPointId);

  InputPointType ComputeFaceCenter(unsigned long faceId);

  IndexSetType* m_FaceSet;

  EdgeMapPointer m_Edges;

  EdgeNeighborListType::Pointer m_EdgeNeighborList;

  VertexNeighborListType::Pointer m_VertexNeighborList;

  LineCellIndexType::Pointer m_LineCellIndices;

  unsigned long m_CellIdxOffset;

  unsigned long m_IdOffset;

  unsigned long m_EdgeCellId;

  IdVectorPointer m_HandledEdgeIds;

  InputCellAutoPointer m_NewInputMeshCellPointer;

  OutputCellAutoPointer  m_NewSimplexCellPointer;
};

} //end of namespace

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

#endif

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