itkQuadEdgeMeshDecimationCriteria.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkQuadEdgeMeshDecimationCriteria.h,v $
  Language:  C++
  Date:      $Date: 2008-09-30 22:27:57 $
  Version:   $Revision: 1.5 $

  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 __itkQuadEdgeMeshDecimationCriteria_h
#define __itkQuadEdgeMeshDecimationCriteria_h

#include "itkPriorityQueueContainer.h"

namespace itk
{
template< class TMesh,
  typename TElement  = unsigned long,
  typename TMeasure = double,
  class TPriorityQueueWrapper = 
    MinPriorityQueueElementWrapper< typename TMesh::QEType*, 
      std::pair< bool, TMeasure > > >
class QuadEdgeMeshDecimationCriterion : public Object
{
public:
  typedef QuadEdgeMeshDecimationCriterion       Self;
  typedef SmartPointer< Self >                  Pointer;
  typedef SmartPointer< const Self >            ConstPointer;
  typedef Object                                Superclass;

  itkTypeMacro( QuadEdgeMeshDecimationCriterion, Object );

  typedef TMesh                                                    MeshType;
  typedef TElement                                                 ElementType;
  typedef TMeasure                                                 MeasureType;
  typedef TPriorityQueueWrapper                                    PriorityQueueWrapperType;
  typedef typename PriorityQueueWrapperType::ElementPriorityType   PriorityType;

  void SetNumberOfElements( const unsigned long & numberOfElements )
    {
    this->m_SizeCriterion = true;
    this->m_NumberOfElements = numberOfElements;
    }

  void SetMeasureBound( const MeasureType& bound )
    {
    this->m_SizeCriterion = false;
    this->m_MeasureBound = bound;
    }

  itkGetMacro( TopologicalChange, bool );
  itkSetMacro( TopologicalChange, bool );
  
  virtual bool is_satisfied( MeshType* iMesh,
    const ElementType& iElement,
    const MeasureType& iValue ) const = 0;

protected:
  QuadEdgeMeshDecimationCriterion()
    {
    this->m_TopologicalChange = true;
    this->m_SizeCriterion = true;
    this->m_NumberOfElements = 0;
    this->m_MeasureBound= itk::NumericTraits< MeasureType >::Zero;
    }

  ~QuadEdgeMeshDecimationCriterion() {}

  bool                m_TopologicalChange;
  bool                m_SizeCriterion;
  unsigned long       m_NumberOfElements;
  MeasureType         m_MeasureBound;

private:
  QuadEdgeMeshDecimationCriterion( const Self& );
  void operator = ( const Self& );
};

template< class TMesh,
  typename TElement = unsigned long,
  typename TMeasure = double,
  class TPriorityQueueWrapper = 
    MinPriorityQueueElementWrapper< typename TMesh::QEType*, 
      std::pair< bool, TMeasure > > >
class NumberOfPointsCriterion :
public QuadEdgeMeshDecimationCriterion< TMesh, TElement,
  TMeasure, TPriorityQueueWrapper >
{
public:
  typedef NumberOfPointsCriterion                            Self;
  typedef SmartPointer< Self >                               Pointer;
  typedef SmartPointer< const Self >                         ConstPointer;
  typedef QuadEdgeMeshDecimationCriterion< 
    TMesh, TElement, TMeasure, TPriorityQueueWrapper >       Superclass;

  itkTypeMacro( NumberOfPointsCriterion, QuadEdgeMeshDecimationCriterion );

  itkNewMacro( Self );

  typedef typename Superclass::MeshType                      MeshType;
  typedef typename Superclass::ElementType                   ElementType;
  typedef typename Superclass::MeasureType                   MeasureType;
  typedef typename Superclass::PriorityQueueWrapperType      PriorityQueueWrapperType;
  typedef typename Superclass::PriorityType                  PriorityType;
    
  inline bool is_satisfied( MeshType* iMesh, 
    const ElementType& itkNotUsed( iElement ),
    const MeasureType & itkNotUsed( iValue ) ) const
    {
    return ( iMesh->GetNumberOfPoints() <= this->m_NumberOfElements );
    }

protected:
  NumberOfPointsCriterion( ) {}
  ~NumberOfPointsCriterion() {}

private:
  NumberOfPointsCriterion( const Self& );
  void operator = ( const Self& );
};

template< class TMesh,
  typename TElement = unsigned long,
  typename TMeasure = double,
  class TPriorityQueueWrapper = 
    MinPriorityQueueElementWrapper< ITK_TYPENAME TMesh::QEType*, 
      std::pair< bool, TMeasure > > >
class NumberOfFacesCriterion :
public QuadEdgeMeshDecimationCriterion< TMesh, TElement,
  TMeasure, TPriorityQueueWrapper >
{
public:
  typedef NumberOfFacesCriterion                      Self;
  typedef SmartPointer< Self >                        Pointer;
  typedef SmartPointer< const Self >                  ConstPointer;
  typedef QuadEdgeMeshDecimationCriterion< TMesh, TElement,
    TMeasure, TPriorityQueueWrapper >                 Superclass;

  itkTypeMacro( NumberOfFacesCriterion, QuadEdgeMeshDecimationCriterion );

  itkNewMacro( Self );

  typedef typename Superclass::MeshType                     MeshType;
  typedef typename MeshType::CellsContainerConstIterator    CellsContainerConstIterator;
  typedef typename Superclass::ElementType                  ElementType;
  typedef typename Superclass::MeasureType                  MeasureType;
  typedef typename Superclass::PriorityQueueWrapperType     PriorityQueueWrapperType;
  typedef typename Superclass::PriorityType                 PriorityType;

  inline bool is_satisfied( MeshType* iMesh,
    const ElementType& itkNotUsed( iElement ),
    const MeasureType& itkNotUsed( iValue ) ) const
    {
    return ( iMesh->GetNumberOfFaces() <= this->m_NumberOfElements );
    }

protected:
  NumberOfFacesCriterion( ) {}
  ~NumberOfFacesCriterion() {}

private:
  NumberOfFacesCriterion( const Self& );
  void operator = ( const Self& );
};

template< class TMesh,
  typename TElement = unsigned long,
  typename TMeasure = double,
  class TPriorityQueueWrapper = 
    MinPriorityQueueElementWrapper< typename TMesh::QEType*, 
      std::pair< bool, TMeasure > > >
class MaxMeasureBoundCriterion :
public QuadEdgeMeshDecimationCriterion< TMesh, TElement,
  TMeasure, TPriorityQueueWrapper >
{
public:
  typedef MaxMeasureBoundCriterion                           Self;
  typedef SmartPointer< Self >                               Pointer;
  typedef SmartPointer< const Self >                         ConstPointer;
  typedef QuadEdgeMeshDecimationCriterion< TMesh, TElement,
    TMeasure, TPriorityQueueWrapper >                        Superclass;

  itkTypeMacro( MaxMeasureBoundCriterion, QuadEdgeMeshDecimationCriterion );

  itkNewMacro( Self );

  typedef typename Superclass::MeshType                      MeshType;
  typedef typename MeshType::CellsContainerConstIterator     CellsContainerConstIterator;
  typedef typename Superclass::ElementType                   ElementType;
  typedef typename Superclass::MeasureType                   MeasureType;
  typedef typename Superclass::PriorityQueueWrapperType      PriorityQueueWrapperType;
  typedef typename Superclass::PriorityType                  PriorityType;

  inline bool is_satisfied( MeshType * itkNotUsed( iMesh ),
    const ElementType& itkNotUsed( iElement ),
    const MeasureType& iValue ) const
    {
    return ( iValue <= this->m_MeasureBound );
    }

protected:
  MaxMeasureBoundCriterion( ) : Superclass( ) {}
  ~MaxMeasureBoundCriterion() {}

private:
  MaxMeasureBoundCriterion( const Self& );
  void operator = ( const Self& );
};

template< class TMesh,
  typename TElement = unsigned long,
  typename TMeasure = double,
  class TPriorityQueueWrapper = 
    MaxPriorityQueueElementWrapper< typename TMesh::QEType*,
      std::pair< bool, TMeasure > > >
class MinMeasureBoundCriterion :
public QuadEdgeMeshDecimationCriterion< TMesh, TElement,
  TMeasure, TPriorityQueueWrapper >
{
public:
  typedef MinMeasureBoundCriterion                            Self;
  typedef SmartPointer< Self >                                Pointer;
  typedef SmartPointer< const Self >                          ConstPointer;
  typedef QuadEdgeMeshDecimationCriterion< TMesh, TElement,
    TMeasure, TPriorityQueueWrapper >                         Superclass;

  itkTypeMacro( MinMeasureBoundCriterion, QuadEdgeMeshDecimationCriterion );

  itkNewMacro( Self );

  typedef typename Superclass::MeshType                       MeshType;
  typedef typename MeshType::CellsContainerConstIterator      CellsContainerConstIterator;
  typedef typename Superclass::ElementType                    ElementType;
  typedef typename Superclass::MeasureType                    MeasureType;
  typedef typename Superclass::PriorityQueueWrapperType       PriorityQueueWrapperType;
  typedef typename Superclass::PriorityType                   PriorityType;

  inline bool is_satisfied( MeshType* iMesh,
    const ElementType& iElement,
    const MeasureType& iValue ) const
    {
    return ( iValue >= this->m_MeasureBound );
    }

protected:
  MinMeasureBoundCriterion( ) {}
  ~MinMeasureBoundCriterion() {}

private:
  MinMeasureBoundCriterion( const Self& );
  void operator = ( const Self& );
};
}

#endif

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