OpenMesh: OpenMesh/Tools/Subdivider/Uniform/CompositeSqrt3T.hh Source File

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CompositeSqrt3T.hh
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43
48 //=============================================================================
49 //
50 // CLASS SQRT3T
51 //
52 //=============================================================================
53
54 #ifndef OPENMESH_SUBDIVIDER_UNIFORM_COMPOSITESQRT3T_HH
55 #define OPENMESH_SUBDIVIDER_UNIFORM_COMPOSITESQRT3T_HH
56
57
58 //== INCLUDES =================================================================
59
60 #include "Composite/CompositeT.hh"
61 #include "Composite/CompositeTraits.hh"
62
63
64 //== NAMESPACE ================================================================
65
66 namespace OpenMesh { // BEGIN_NS_OPENMESH
67 namespace Subdivider { // BEGIN_NS_DECIMATER
68 namespace Uniform { // BEGIN_NS_UNIFORM
69
70
71 //== CLASS DEFINITION =========================================================
72
75 template <typename MeshType, typename RealType = double>
76 class CompositeSqrt3T : public CompositeT<MeshType, RealType>
77 {
78 public:
79
80 typedef CompositeT<MeshType, RealType> Inherited;
81
82 public:
83
84 CompositeSqrt3T() : Inherited() {};
85 explicit CompositeSqrt3T(MeshType& _mesh) : Inherited(_mesh) {};
86 ~CompositeSqrt3T() {}
87
88 public:
89
90 const char *name() const override { return "Uniform Composite Sqrt3"; }
91
92 protected: // inherited interface
93
94 void apply_rules(void) override
95 {
96 Inherited::Tvv3();
97 Inherited::VF();
98 Inherited::FF();
99 Inherited::FVc(coeffs_);
100 }
101
102 protected:
103
104 typedef typename Inherited::Coeff Coeff;
105
109 struct FVCoeff : public Coeff
110 {
111 FVCoeff() : Coeff() { init(50); }
112
113 void init(size_t _max_valence)
114 {
115 weights_.resize(_max_valence);
116 std::generate(weights_.begin(),
117 weights_.end(), compute_weight() );
118 }
119
120 double operator()(size_t _valence) override { return weights_[_valence]; }
121
124 struct compute_weight
125 {
126 compute_weight() : val_(0) { }
127
128 double operator()(void) // sqrt(3) weights for non-boundary vertices
129 {
130 return 2.0/3.0 * (cos(2.0*M_PI/val_++)+1.0);
131 }
132 size_t val_;
133 };
134
135 std::vector<double> weights_;
136
137 } coeffs_;
138
139 };
140
141
142 //=============================================================================
143 } // END_NS_UNIFORM
144 } // END_NS_SUBDIVIDER
145 } // END_NS_OPENMESH
146 //=============================================================================
147 #endif // OPENMESH_SUBDIVIDER_UNIFORM_COMPOSITESQRT3T_HH defined
148 //=============================================================================
OpenMesh
Contains all the mesh ingredients like the polygonal mesh, the triangle mesh, different mesh kernels ...
Definition: MeshItems.hh:59
OpenMesh::Subdivider::Uniform::CompositeT
This class provides the composite subdivision rules for the uniform case.
Definition: CompositeT.hh:90
OpenMesh::Subdivider::Uniform::CompositeT::Coeff
Abstract base class for coefficient functions.
Definition: CompositeT.hh:158
OpenMesh::Subdivider::Uniform::CompositeSqrt3T
Uniform composite sqrt(3) subdivision algorithm.
Definition: CompositeSqrt3T.hh:77
OpenMesh::Subdivider::Uniform::CompositeSqrt3T::name
const char * name() const override
Return name of subdivision algorithm.
Definition: CompositeSqrt3T.hh:90
OpenMesh::Subdivider::Uniform::CompositeSqrt3T::apply_rules
void apply_rules(void) override
Assemble here the rule sequence, by calling the constructor of the wanted rules.
Definition: CompositeSqrt3T.hh:94
OpenMesh::Subdivider::Uniform::CompositeSqrt3T::FVCoeff
Helper class.
Definition: CompositeSqrt3T.hh:110
OpenMesh::Subdivider::Uniform::CompositeSqrt3T::FVCoeff::compute_weight
Definition: CompositeSqrt3T.hh:125