Developer Documentation
DiffGeoT.hh
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49 
50 //=============================================================================
51 //
52 // CLASS DiffGeoT
53 //
54 //=============================================================================
55 
56 
57 #ifndef DIFFGEO_HH
58 #define DIFFGEO_HH
59 
60 
61 //== INCLUDES =================================================================
62 
63 #include <OpenMesh/Core/Utils/Property.hh>
64 
65 
66 //== NAMESPACES ===============================================================
67 
68 namespace Remeshing {
69 
70 //== CLASS DEFINITION =========================================================
71 
72 
73 template <class Mesh>
74 class DiffGeoT
75 {
76 public:
77 
78  typedef typename Mesh::Scalar Scalar;
79  typedef typename Mesh::VertexHandle VertexHandle;
80 
81 
82  DiffGeoT(Mesh& _mesh);
83  ~DiffGeoT();
84 
85 
86  void compute(unsigned int _post_smoothing_iters=0);
87 
88  void compute_edge_weights();
89  void compute_area();
90  void compute_gauss_curvature();
91  void compute_mean_curvature();
92  void post_smoothing(unsigned int _iters);
93 
94 
95  Scalar compute_area(VertexHandle _vh) const;
96 
97 
98  Scalar area(VertexHandle _vh) const {
99  return mesh_.property(area_, _vh);
100  }
101 
102  Scalar gauss_curvature(VertexHandle _vh) const {
103  return mesh_.property(gauss_curvature_, _vh);
104  }
105 
106  Scalar mean_curvature(VertexHandle _vh) const {
107  return mesh_.property(mean_curvature_, _vh);
108  }
109 
110  Scalar min_curvature(VertexHandle _vh) const {
111  const Scalar zero(0.0);
112  Scalar H = mean_curvature(_vh);
113  Scalar K = gauss_curvature(_vh);
114  return H - sqrt(std::max(zero, H*H-K));
115  }
116 
117  Scalar max_curvature(VertexHandle _vh) const {
118  const Scalar zero(0.0);
119  Scalar H = mean_curvature(_vh);
120  Scalar K = gauss_curvature(_vh);
121  return H + sqrt(std::max(zero, H*H-K));
122  }
123 
124 
125 private:
126 
127  Mesh& mesh_;
128 
130  OpenMesh::VPropHandleT<Scalar> gauss_curvature_;
131  OpenMesh::VPropHandleT<Scalar> mean_curvature_;
132  OpenMesh::EPropHandleT<Scalar> edge_weight_;
133 
134  bool weights_computed_, area_computed_;
135 };
136 
137 
138 //=============================================================================
139 } // namespace Remeshing
140 //=============================================================================
141 #if defined(INCLUDE_TEMPLATES) && !defined(DIFFGEOT_C)
142 #define DIFFGEO_TEMPLATES
143 #include "DiffGeoT.cc"
144 #endif
145 //=============================================================================
146 #endif // DIFFGEO_HH defined
147 //=============================================================================
148 
Kernel::VertexHandle VertexHandle
Handle for referencing the corresponding item.
Definition: PolyMeshT.hh:139
Kernel::Scalar Scalar
Scalar type.
Definition: PolyMeshT.hh:113