1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* 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.
*
*=========================================================================*/
#ifndef itkDiscreteGaussianCurvatureQuadEdgeMeshFilter_h
#define itkDiscreteGaussianCurvatureQuadEdgeMeshFilter_h
#include "itkDiscreteCurvatureQuadEdgeMeshFilter.h"
#include "itkMath.h"
namespace itk
{
/**
* \class DiscreteGaussianCurvatureQuadEdgeMeshFilter
* \brief see the following paper
* title: Discrete Differential-Geometry Operators for Triangulated 2-Manifolds
* authors: Mark Meyer, Mathieu Desbrun, Peter Schroder, Alan H. Barr
* conference: VisMath '02
* location: Berlin (Germany)
* \author: Arnaud Gelas, Alexandre Gouaillard
* \ingroup ITKQuadEdgeMeshFiltering
*/
template <typename TInputMesh, typename TOutputMesh = TInputMesh>
class ITK_TEMPLATE_EXPORT DiscreteGaussianCurvatureQuadEdgeMeshFilter
: public DiscreteCurvatureQuadEdgeMeshFilter<TInputMesh, TOutputMesh>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(DiscreteGaussianCurvatureQuadEdgeMeshFilter);
using Self = DiscreteGaussianCurvatureQuadEdgeMeshFilter;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
using Superclass = DiscreteCurvatureQuadEdgeMeshFilter<TInputMesh, TOutputMesh>;
using typename Superclass::InputMeshType;
using typename Superclass::InputMeshPointer;
using typename Superclass::OutputMeshType;
using typename Superclass::OutputMeshPointer;
using typename Superclass::OutputPointsContainerPointer;
using typename Superclass::OutputPointsContainerIterator;
using typename Superclass::OutputPointType;
using typename Superclass::OutputVectorType;
using typename Superclass::OutputCoordType;
using typename Superclass::OutputPointIdentifier;
using typename Superclass::OutputCellIdentifier;
using typename Superclass::OutputQEType;
using typename Superclass::OutputMeshTraits;
using typename Superclass::OutputCurvatureType;
using typename Superclass::TriangleType;
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(DiscreteGaussianCurvatureQuadEdgeMeshFilter);
/** New macro for creation of through a Smart Pointer */
itkNewMacro(Self);
#ifdef ITK_USE_CONCEPT_CHECKING
// Begin concept checking
itkConceptMacro(OutputIsFloatingPointCheck, (Concept::IsFloatingPoint<OutputCurvatureType>));
// End concept checking
#endif
protected:
DiscreteGaussianCurvatureQuadEdgeMeshFilter() = default;
~DiscreteGaussianCurvatureQuadEdgeMeshFilter() override = default;
OutputCurvatureType
EstimateCurvature(const OutputPointType & iP) override
{
OutputMeshPointer output = this->GetOutput();
OutputQEType * qe = iP.GetEdge();
if (qe != nullptr)
{
OutputQEType * qe_it = qe;
OutputQEType * qe_it2;
OutputPointType q0, q1;
OutputCurvatureType sum_theta = 0.;
OutputCurvatureType area = 0.;
do
{
// cell_id = qe_it->GetLeft();
qe_it2 = qe_it->GetOnext();
q0 = output->GetPoint(qe_it->GetDestination());
q1 = output->GetPoint(qe_it2->GetDestination());
// Compute Angle;
sum_theta += static_cast<OutputCurvatureType>(TriangleType::ComputeAngle(q0, iP, q1));
area += this->ComputeMixedArea(qe_it, qe_it2);
qe_it = qe_it2;
} while (qe_it != qe);
return (2.0 * itk::Math::pi - sum_theta) / area;
}
return 0.;
}
};
} // namespace itk
#endif
|
