itkQuadEdgeMeshSquaredEdgeLengthDecimation.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkQuadEdgeMeshSquaredEdgeLengthDecimation.h,v $
  Language:  C++
  Date:      $Date: 2008-10-03 22:32:04 $
  Version:   $Revision: 1.2 $

  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 __itkQuadEdgeMeshSquaredEdgeLengthDecimation_h
#define __itkQuadEdgeMeshSquaredEdgeLengthDecimation_h

#include "itkQuadEdgeMeshEdgeMergeDecimationFilter.h"

namespace itk
{
template< class TInput, class TOutput, class TCriterion >
class QuadEdgeMeshSquaredEdgeLengthDecimation :
  public QuadEdgeMeshEdgeMergeDecimationFilter< TInput, TOutput, TCriterion >
{
public:
  typedef QuadEdgeMeshSquaredEdgeLengthDecimation         Self;
  typedef SmartPointer< Self >                            Pointer;
  typedef SmartPointer< const Self >                      ConstPointer;
  typedef QuadEdgeMeshEdgeMergeDecimationFilter< 
    TInput, TOutput, TCriterion >                         Superclass;

  itkTypeMacro( QuadEdgeMeshSquaredEdgeLengthDecimation, QuadEdgeMeshEdgeMergeDecimationFilter );

  itkNewMacro( Self );

  typedef TInput                                            InputMeshType;
  typedef typename InputMeshType::Pointer                   InputMeshPointer;

  typedef TOutput                                           OutputMeshType;
  typedef typename OutputMeshType::Pointer                  OutputMeshPointer;
  typedef typename OutputMeshType::PointIdentifier          OutputPointIdentifier;
  typedef typename OutputMeshType::PointType                OutputPointType;
  typedef typename OutputMeshType::QEType                   OutputQEType;
  typedef typename OutputMeshType::EdgeCellType             OutputEdgeCellType;
  typedef typename OutputMeshType::CellsContainerIterator   OutputCellsContainerIterator;

  typedef TCriterion                                        CriterionType;
  typedef typename CriterionType::MeasureType               MeasureType;

  typedef typename Superclass::PriorityType                 PriorityType;
  typedef typename Superclass::PriorityQueueItemType        PriorityQueueItemType;
  typedef typename Superclass::PriorityQueueType            PriorityQueueType;
  typedef typename Superclass::PriorityQueuePointer         PriorityQueuePointer;

  typedef typename Superclass::QueueMapType                 QueueMapType;
  typedef typename Superclass::QueueMapIterator             QueueMapIterator;

  typedef typename Superclass::OperatorType                 OperatorType;
  typedef typename Superclass::OperatorPointer              OperatorPointer;

protected:

  QuadEdgeMeshSquaredEdgeLengthDecimation();
  virtual ~QuadEdgeMeshSquaredEdgeLengthDecimation();

  inline MeasureType MeasureEdge( OutputQEType* iEdge )
    {
    OutputMeshPointer output = this->GetOutput();

    OutputPointIdentifier id_org = iEdge->GetOrigin();
    OutputPointIdentifier id_dest = iEdge->GetDestination();

    OutputPointType org = output->GetPoint( id_org );
    OutputPointType dest = output->GetPoint( id_dest );

    return static_cast< MeasureType >( org.SquaredEuclideanDistanceTo( dest ) );
    }

  OutputPointType Relocate( OutputQEType* iEdge );

private:
  QuadEdgeMeshSquaredEdgeLengthDecimation( const Self& );
  void operator = ( const Self& );

};

}

#include "itkQuadEdgeMeshSquaredEdgeLengthDecimation.txx"
#endif

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