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CompositeLoopT.hh
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53//=============================================================================
54//
55// CLASS LoopT
56//
57//=============================================================================
58
59#ifndef OPENMESH_SUBDIVIDER_UNIFORM_COMPOSITELOOPT_HH
60#define OPENMESH_SUBDIVIDER_UNIFORM_COMPOSITELOOPT_HH
61
62
63//== INCLUDES =================================================================
64
67
68
69//== NAMESPACE ================================================================
70
71namespace OpenMesh { // BEGIN_NS_OPENMESH
72namespace Subdivider { // BEGIN_NS_DECIMATER
73namespace Uniform { // BEGIN_NS_DECIMATER
74
75
76//== CLASS DEFINITION =========================================================
77
80template <class MeshType, class RealType=float>
81class CompositeLoopT : public CompositeT<MeshType, RealType>
82{
83public:
84
86
87public:
88
90 CompositeLoopT(MeshType& _mesh) : Inherited(_mesh) {};
92
93public:
94
95 const char *name() const { return "Uniform Composite Loop"; }
96
97protected: // inherited interface
98
99 void apply_rules(void)
100 {
101 Inherited::Tvv4();
102 Inherited::VdE();
103 Inherited::EVc(coeffs_);
104 Inherited::VdE();
105 Inherited::EVc(coeffs_);
106 }
107
108protected:
109
110 typedef typename Inherited::Coeff Coeff;
111
112
116 struct EVCoeff : public Coeff
117 {
118 EVCoeff() : Coeff() { init(50); }
119
120 void init(size_t _max_valence)
121 {
122 weights_.resize(_max_valence);
123 std::generate(weights_.begin(),
124 weights_.end(), compute_weight() );
125 }
126
127 double operator()(size_t _valence) { return weights_[_valence]; }
128
131 {
132 compute_weight() : val_(0) { }
133
134 double operator()(void) // Loop weights for non-boundary vertices
135 {
136 // 1 3 2 * pi
137 // - * ( --- + cos ( ------- ) )� - 1.0
138 // 2 2 valence
139 double f1 = 1.5 + cos(2.0*M_PI/val_++);
140 return 0.5 * f1 * f1 - 1.0;
141 }
142 size_t val_;
143
144 };
145
146 std::vector<double> weights_;
147 } coeffs_;
148
149};
150
151//=============================================================================
152} // END_NS_UNIFORM
153} // END_NS_SUBDIVIDER
154} // END_NS_OPENMESH
155//=============================================================================
156#endif // OPENMESH_SUBDIVIDER_UNIFORM_COMPOSITELOOPT_HH defined
157//=============================================================================
Contains all the mesh ingredients like the polygonal mesh, the triangle mesh, different mesh kernels ...
Definition MeshItems.hh:64
This class provides the composite subdivision rules for the uniform case.
Definition CompositeT.hh:95
Abstract base class for coefficient functions.
Definition CompositeT.hh:163
Uniform composite Loop subdivision algorithm.
Definition CompositeLoopT.hh:82
const char * name() const
Return name of subdivision algorithm.
Definition CompositeLoopT.hh:95
void apply_rules(void)
Assemble here the rule sequence, by calling the constructor of the wanted rules.
Definition CompositeLoopT.hh:99
Helper struct.
Definition CompositeLoopT.hh:117
Mesh traits for uniform composite subdivision.

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