ITK  5.3.0
Insight Toolkit
itkDiscreteGaussianCurvatureQuadEdgeMeshFilter.h
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18 #ifndef itkDiscreteGaussianCurvatureQuadEdgeMeshFilter_h
19 #define itkDiscreteGaussianCurvatureQuadEdgeMeshFilter_h
20 
22 #include "itkMath.h"
23 
24 
25 namespace itk
26 {
37 template <typename TInputMesh, typename TOutputMesh = TInputMesh>
39  : public DiscreteCurvatureQuadEdgeMeshFilter<TInputMesh, TOutputMesh>
40 {
41 public:
42  ITK_DISALLOW_COPY_AND_MOVE(DiscreteGaussianCurvatureQuadEdgeMeshFilter);
43 
48 
49  using InputMeshType = typename Superclass::InputMeshType;
50  using InputMeshPointer = typename Superclass::InputMeshPointer;
51 
52  using OutputMeshType = typename Superclass::OutputMeshType;
53  using OutputMeshPointer = typename Superclass::OutputMeshPointer;
54  using OutputPointsContainerPointer = typename Superclass::OutputPointsContainerPointer;
55  using OutputPointsContainerIterator = typename Superclass::OutputPointsContainerIterator;
56  using OutputPointType = typename Superclass::OutputPointType;
57  using OutputVectorType = typename Superclass::OutputVectorType;
58  using OutputCoordType = typename Superclass::OutputCoordType;
59  using OutputPointIdentifier = typename Superclass::OutputPointIdentifier;
60  using OutputCellIdentifier = typename Superclass::OutputCellIdentifier;
61  using OutputQEType = typename Superclass::OutputQEType;
62  using OutputMeshTraits = typename Superclass::OutputMeshTraits;
63  using OutputCurvatureType = typename Superclass::OutputCurvatureType;
64  using TriangleType = typename Superclass::TriangleType;
65 
68 
70  itkNewMacro(Self);
71 
72 #ifdef ITK_USE_CONCEPT_CHECKING
73  // Begin concept checking
75  // End concept checking
76 #endif
77 
78 protected:
80  ~DiscreteGaussianCurvatureQuadEdgeMeshFilter() override = default;
81 
83  EstimateCurvature(const OutputPointType & iP) override
84  {
85  OutputMeshPointer output = this->GetOutput();
86 
87  OutputQEType * qe = iP.GetEdge();
88 
89  if (qe != nullptr)
90  {
91  OutputQEType * qe_it = qe;
92  OutputQEType * qe_it2;
93 
94  OutputPointType q0, q1;
95 
96  OutputCurvatureType sum_theta = 0.;
97  OutputCurvatureType area = 0.;
98 
99  do
100  {
101  // cell_id = qe_it->GetLeft();
102  qe_it2 = qe_it->GetOnext();
103  q0 = output->GetPoint(qe_it->GetDestination());
104  q1 = output->GetPoint(qe_it2->GetDestination());
105 
106  // Compute Angle;
107  sum_theta += static_cast<OutputCurvatureType>(TriangleType::ComputeAngle(q0, iP, q1));
108  area += this->ComputeMixedArea(qe_it, qe_it2);
109  qe_it = qe_it2;
110  } while (qe_it != qe);
111 
112  return (2.0 * itk::Math::pi - sum_theta) / area;
113  }
114 
115  return 0.;
116  }
117 };
118 } // namespace itk
119 
120 #endif
itk::MeshSource::OutputMeshPointer
typename OutputMeshType::Pointer OutputMeshPointer
Definition: itkMeshSource.h:69
itk::QuadEdgeMeshToQuadEdgeMeshFilter::OutputPointsContainerPointer
typename OutputMeshType::PointsContainerPointer OutputPointsContainerPointer
Definition: itkQuadEdgeMeshToQuadEdgeMeshFilter.h:86
itk::MeshToMeshFilter::InputMeshPointer
typename InputMeshType::Pointer InputMeshPointer
Definition: itkMeshToMeshFilter.h:66
itkDiscreteCurvatureQuadEdgeMeshFilter.h
itk::SmartPointer< Self >
itk::TriangleHelper
A convenience class for computation of various triangle elements in 2D or 3D.
Definition: itkTriangleHelper.h:31
itk::MeshToMeshFilter::InputMeshType
TInputMesh InputMeshType
Definition: itkMeshToMeshFilter.h:65
itk::LightObject
Light weight base class for most itk classes.
Definition: itkLightObject.h:59
itk::DiscreteCurvatureQuadEdgeMeshFilter::OutputCurvatureType
typename OutputMeshTraits::PixelType OutputCurvatureType
Definition: itkDiscreteCurvatureQuadEdgeMeshFilter.h:59
itk::QuadEdgeMeshToQuadEdgeMeshFilter::OutputVectorType
typename OutputMeshType::VectorType OutputVectorType
Definition: itkQuadEdgeMeshToQuadEdgeMeshFilter.h:83
itk::Concept::IsFloatingPoint
Definition: itkConceptChecking.h:946
itk::DiscreteCurvatureQuadEdgeMeshFilter::OutputMeshTraits
typename OutputMeshType::MeshTraits OutputMeshTraits
Definition: itkDiscreteCurvatureQuadEdgeMeshFilter.h:58
itk::DiscreteGaussianCurvatureQuadEdgeMeshFilter
see the following paper title: Discrete Differential-Geometry Operators for Triangulated 2-Manifolds ...
Definition: itkDiscreteGaussianCurvatureQuadEdgeMeshFilter.h:38
itk::DiscreteGaussianCurvatureQuadEdgeMeshFilter::EstimateCurvature
OutputCurvatureType EstimateCurvature(const OutputPointType &iP) override
Definition: itkDiscreteGaussianCurvatureQuadEdgeMeshFilter.h:83
itk::DiscreteCurvatureQuadEdgeMeshFilter::OutputCoordType
typename OutputPointType::CoordRepType OutputCoordType
Definition: itkDiscreteCurvatureQuadEdgeMeshFilter.h:54
itk::DiscreteCurvatureQuadEdgeMeshFilter
FIXME.
Definition: itkDiscreteCurvatureQuadEdgeMeshFilter.h:35
itkConceptMacro
#define itkConceptMacro(name, concept)
Definition: itkConceptChecking.h:65
itk
The "itk" namespace contains all Insight Segmentation and Registration Toolkit (ITK) classes....
Definition: itkAnnulusOperator.h:24
itk::DiscreteCurvatureQuadEdgeMeshFilter::OutputQEType
typename OutputMeshType::QEType OutputQEType
Definition: itkDiscreteCurvatureQuadEdgeMeshFilter.h:57
itk::MeshSource::OutputMeshType
TOutputMesh OutputMeshType
Definition: itkMeshSource.h:68
itk::DiscreteCurvatureQuadEdgeMeshFilter::OutputCellIdentifier
typename OutputMeshType::CellIdentifier OutputCellIdentifier
Definition: itkDiscreteCurvatureQuadEdgeMeshFilter.h:56
itk::Math::pi
static constexpr double pi
Definition: itkMath.h:64
itk::QuadEdgeMeshToQuadEdgeMeshFilter::OutputPointIdentifier
typename OutputMeshType::PointIdentifier OutputPointIdentifier
Definition: itkQuadEdgeMeshToQuadEdgeMeshFilter.h:81
itk::QuadEdgeMeshToQuadEdgeMeshFilter::OutputPointType
typename OutputMeshType::PointType OutputPointType
Definition: itkQuadEdgeMeshToQuadEdgeMeshFilter.h:80
itkMath.h
itk::QuadEdgeMeshToQuadEdgeMeshFilter::OutputPointsContainerIterator
typename OutputMeshType::PointsContainerIterator OutputPointsContainerIterator
Definition: itkQuadEdgeMeshToQuadEdgeMeshFilter.h:85