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CompositeSqrt3T.hh
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41 
46 //=============================================================================
47 //
48 // CLASS SQRT3T
49 //
50 //=============================================================================
51 
52 #ifndef OPENMESH_SUBDIVIDER_UNIFORM_COMPOSITESQRT3T_HH
53 #define OPENMESH_SUBDIVIDER_UNIFORM_COMPOSITESQRT3T_HH
54 
55 
56 //== INCLUDES =================================================================
57 
58 #include "Composite/CompositeT.hh"
59 #include "Composite/CompositeTraits.hh"
60 
61 
62 //== NAMESPACE ================================================================
63 
64 namespace OpenMesh { // BEGIN_NS_OPENMESH
65 namespace Subdivider { // BEGIN_NS_DECIMATER
66 namespace Uniform { // BEGIN_NS_UNIFORM
67 
68 
69 //== CLASS DEFINITION =========================================================
70 
73 template <typename MeshType, typename RealType=float>
74 class CompositeSqrt3T : public CompositeT<MeshType, RealType>
75 {
76 public:
77 
79 
80 public:
81 
82  CompositeSqrt3T() : Inherited() {};
83  CompositeSqrt3T(MeshType& _mesh) : Inherited(_mesh) {};
84  ~CompositeSqrt3T() {}
85 
86 public:
87 
88  const char *name() const { return "Uniform Composite Sqrt3"; }
89 
90 protected: // inherited interface
91 
92  void apply_rules(void)
93  {
94  Inherited::Tvv3();
95  Inherited::VF();
96  Inherited::FF();
97  Inherited::FVc(coeffs_);
98  }
99 
100 protected:
101 
102  typedef typename Inherited::Coeff Coeff;
103 
107  struct FVCoeff : public Coeff
108  {
109  FVCoeff() : Coeff() { init(50); }
110 
111  void init(size_t _max_valence)
112  {
113  weights_.resize(_max_valence);
114  std::generate(weights_.begin(),
115  weights_.end(), compute_weight() );
116  }
117 
118  double operator()(size_t _valence) { return weights_[_valence]; }
119 
123  {
124  compute_weight() : val_(0) { }
125 
126  double operator()(void) // sqrt(3) weights for non-boundary vertices
127  {
128  return 2.0/3.0 * (cos(2.0*M_PI/val_++)+1.0);
129  }
130  size_t val_;
131  };
132 
133  std::vector<double> weights_;
134 
135  } coeffs_;
136 
137 };
138 
139 
140 //=============================================================================
141 } // END_NS_UNIFORM
142 } // END_NS_SUBDIVIDER
143 } // END_NS_OPENMESH
144 //=============================================================================
145 #endif // OPENMESH_SUBDIVIDER_UNIFORM_COMPOSITESQRT3T_HH defined
146 //=============================================================================
This class provides the composite subdivision rules for the uniform case.
Definition: CompositeT.hh:87
void apply_rules(void)
Assemble here the rule sequence, by calling the constructor of the wanted rules.
Definition: CompositeSqrt3T.hh:92
const char * name() const
Return name of subdivision algorithm.
Definition: CompositeSqrt3T.hh:88
Helper class.
Definition: CompositeSqrt3T.hh:107
Uniform composite sqrt(3) subdivision algorithm.
Definition: CompositeSqrt3T.hh:74
Abstract base class for coefficient functions.
Definition: CompositeT.hh:155

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