OpenMesh
CompositeLoopT.hh
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42 
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 
81 
82 public:
83 
84  CompositeLoopT() : Inherited() {};
85  explicit CompositeLoopT(MeshType& _mesh) : Inherited(_mesh) {};
86  ~CompositeLoopT() {}
87 
88 public:
89 
90  const char *name() const override { return "Uniform Composite Loop"; }
91 
92 protected: // inherited interface
93 
94  void apply_rules(void) override
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) override { return weights_[_valence]; }
123 
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 //=============================================================================
Contains all the mesh ingredients like the polygonal mesh, the triangle mesh, different mesh kernels ...
Definition: MeshItems.hh:59
This class provides the composite subdivision rules for the uniform case.
Definition: CompositeT.hh:90
Abstract base class for coefficient functions.
Definition: CompositeT.hh:158
Uniform composite Loop subdivision algorithm.
Definition: CompositeLoopT.hh:77
void apply_rules(void) override
Assemble here the rule sequence, by calling the constructor of the wanted rules.
Definition: CompositeLoopT.hh:94
const char * name() const override
Return name of subdivision algorithm.
Definition: CompositeLoopT.hh:90
Helper struct.
Definition: CompositeLoopT.hh:112

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