itkDiscreteMinimumCurvatureQuadEdgeMeshFilter.h

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 *
 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
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 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
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#ifndef __itkDiscreteMinimumCurvatureQuadEdgeMeshFilter_h
#define __itkDiscreteMinimumCurvatureQuadEdgeMeshFilter_h

#include "itkDiscretePrincipalCurvaturesQuadEdgeMeshFilter.h"

namespace itk
{
template< class TInputMesh, class TOutputMesh=TInputMesh >
class ITK_EXPORT DiscreteMinimumCurvatureQuadEdgeMeshFilter:
  public DiscretePrincipalCurvaturesQuadEdgeMeshFilter< TInputMesh, TOutputMesh >
{
public:
  typedef DiscreteMinimumCurvatureQuadEdgeMeshFilter  Self;
  typedef SmartPointer< Self >                        Pointer;
  typedef SmartPointer< const Self >                  ConstPointer;
  typedef DiscretePrincipalCurvaturesQuadEdgeMeshFilter<
    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(DiscreteMinimumCurvatureQuadEdgeMeshFilter, DiscretePrincipalCurvaturesQuadEdgeMeshFilter);

  itkNewMacro(Self);

#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro( OutputIsFloatingPointCheck,
                   ( Concept::IsFloatingPoint< OutputCurvatureType > ) );

#endif

protected:
  DiscreteMinimumCurvatureQuadEdgeMeshFilter() {}
  ~DiscreteMinimumCurvatureQuadEdgeMeshFilter() {}

  virtual OutputCurvatureType EstimateCurvature(const OutputPointType & iP)
  {
    this->ComputeMeanAndGaussianCurvatures(iP);
    return this->m_Mean - vcl_sqrt( this->ComputeDelta() );
  }

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

#endif