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CompositeLoopT.hh
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43
48 //=============================================================================
49 //
50 // CLASS LoopT
51 //
52 //=============================================================================
53
54 #ifndef OPENMESH_SUBDIVIDER_UNIFORM_COMPOSITELOOPT_HH
55 #define OPENMESH_SUBDIVIDER_UNIFORM_COMPOSITELOOPT_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_DECIMATER
69
70
71 //== CLASS DEFINITION =========================================================
72
75 template <class MeshType, class RealType = double>
76 class CompositeLoopT : public CompositeT<MeshType, RealType>
77 {
78 public:
79
80 typedef CompositeT<MeshType, RealType> Inherited;
81
82 public:
83
84 CompositeLoopT() : Inherited() {};
85 CompositeLoopT(MeshType& _mesh) : Inherited(_mesh) {};
86 ~CompositeLoopT() {}
87
88 public:
89
90 const char *name() const { return "Uniform Composite Loop"; }
91
92 protected: // inherited interface
93
94 void apply_rules(void)
95 {
96 Inherited::Tvv4();
97 Inherited::VdE();
98 Inherited::EVc(coeffs_);
99 Inherited::VdE();
100 Inherited::EVc(coeffs_);
101 }
102
103 protected:
104
105 typedef typename Inherited::Coeff Coeff;
106
107
111 struct EVCoeff : public Coeff
112 {
113 EVCoeff() : Coeff() { init(50); }
114
115 void init(size_t _max_valence)
116 {
117 weights_.resize(_max_valence);
118 std::generate(weights_.begin(),
119 weights_.end(), compute_weight() );
120 }
121
122 double operator()(size_t _valence) { return weights_[_valence]; }
123
125 struct compute_weight
126 {
127 compute_weight() : val_(0) { }
128
129 double operator()(void) // Loop weights for non-boundary vertices
130 {
131 // 1 3 2 * pi
132 // - * ( --- + cos ( ------- ) )� - 1.0
133 // 2 2 valence
134 double f1 = 1.5 + cos(2.0*M_PI/val_++);
135 return 0.5 * f1 * f1 - 1.0;
136 }
137 size_t val_;
138
139 };
140
141 std::vector<double> weights_;
142 } coeffs_;
143
144 };
145
146 //=============================================================================
147 } // END_NS_UNIFORM
148 } // END_NS_SUBDIVIDER
149 } // END_NS_OPENMESH
150 //=============================================================================
151 #endif // OPENMESH_SUBDIVIDER_UNIFORM_COMPOSITELOOPT_HH defined
152 //=============================================================================
OpenMesh::Subdivider::Uniform::CompositeT
This class provides the composite subdivision rules for the uniform case.
Definition: CompositeT.hh:89
OpenMesh::Subdivider::Uniform::CompositeLoopT::name
const char * name() const
Return name of subdivision algorithm.
Definition: CompositeLoopT.hh:90
OpenMesh::Subdivider::Uniform::CompositeLoopT::EVCoeff::compute_weight
Definition: CompositeLoopT.hh:125
OpenMesh::Subdivider::Uniform::CompositeLoopT::apply_rules
void apply_rules(void)
Assemble here the rule sequence, by calling the constructor of the wanted rules.
Definition: CompositeLoopT.hh:94
OpenMesh::Subdivider::Uniform::CompositeLoopT::EVCoeff
Helper struct.
Definition: CompositeLoopT.hh:111
OpenMesh
Contains all the mesh ingredients like the polygonal mesh, the triangle mesh, different mesh kernels ...
Definition: MeshItems.hh:59
OpenMesh::Subdivider::Uniform::CompositeT::Coeff
Abstract base class for coefficient functions.
Definition: CompositeT.hh:157
OpenMesh::Subdivider::Uniform::CompositeLoopT
Uniform composite Loop subdivision algorithm.
Definition: CompositeLoopT.hh:76