itkQuadEdgeMeshDiscreteMinCurvatureEstimator.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkQuadEdgeMeshDiscreteMinCurvatureEstimator.h,v $
  Language:  C++
  Date:      $Date: 2008-10-01 22:06:23 $
  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 __itkQuadEdgeMeshDiscreteMinCurvatureEstimator_h
#define __itkQuadEdgeMeshDiscreteMinCurvatureEstimator_h

#include "itkQuadEdgeMeshDiscretePrincipalCurvaturesEstimator.h"

namespace itk
{
template< class TInputMesh, class TOutputMesh >
class QuadEdgeMeshDiscreteMinCurvatureEstimator :
  public QuadEdgeMeshDiscretePrincipalCurvaturesEstimator< TInputMesh, TOutputMesh >
{
public:
  typedef QuadEdgeMeshDiscreteMinCurvatureEstimator              Self;
  typedef SmartPointer< Self >                                   Pointer;
  typedef SmartPointer< const Self >                             ConstPointer;
  typedef QuadEdgeMeshDiscretePrincipalCurvaturesEstimator< 
    TInputMesh, TOutputMesh >                                    Superclass;

  typedef typename Superclass::InputMeshType                     InputMeshType;
  typedef typename Superclass::InputMeshPointer                  InputMeshPointer;

  typedef typename Superclass::OutputMeshType                    OutputMeshType;
  typedef typename Superclass::OutputMeshPointer                 OutputMeshPointer;
  typedef typename Superclass::OutputPointsContainerPointer      OutputPointsContainerPointer;
  typedef typename Superclass::OutputPointsContainerIterator     OutputPointsContainerIterator;
  typedef typename Superclass::OutputPointType                   OutputPointType;
  typedef typename Superclass::OutputVectorType                  OutputVectorType;
  typedef typename Superclass::OutputCoordType                   OutputCoordType;
  typedef typename Superclass::OutputPointIdentifier             OutputPointIdentifier;
  typedef typename Superclass::OutputCellIdentifier              OutputCellIdentifier;
  typedef typename Superclass::OutputQEType                      OutputQEType;
  typedef typename Superclass::OutputMeshTraits                  OutputMeshTraits;
  typedef typename Superclass::OutputCurvatureType               OutputCurvatureType;
  
  typedef typename Superclass::TriangleType                      TriangleType;
  
  itkTypeMacro( QuadEdgeMeshDiscreteMinCurvatureEstimator, QuadEdgeMeshDiscretePrincipalCurvaturesEstimator );

  itkNewMacro( Self );

protected:
  QuadEdgeMeshDiscreteMinCurvatureEstimator() {}
  ~QuadEdgeMeshDiscreteMinCurvatureEstimator() {}

  virtual OutputCurvatureType EstimateCurvature( const OutputPointType& iP )
    {
    this->ComputeMeanAndGaussianCurvatures( iP );
    return this->m_Mean - vcl_sqrt( this->ComputeDelta() );
    }
    
private:
  QuadEdgeMeshDiscreteMinCurvatureEstimator( const Self& ); // purposely not implemented
  void operator = ( const Self& ); // purposely not implemented

};

}

#endif