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CompositeLoopT.hh
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48 
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 
65 #include "Composite/CompositeT.hh"
66 #include "Composite/CompositeTraits.hh"
67 
68 
69 //== NAMESPACE ================================================================
70 
71 namespace OpenMesh { // BEGIN_NS_OPENMESH
72 namespace Subdivider { // BEGIN_NS_DECIMATER
73 namespace Uniform { // BEGIN_NS_DECIMATER
74 
75 
76 //== CLASS DEFINITION =========================================================
77 
80 template <class MeshType, class RealType=float>
81 class CompositeLoopT : public CompositeT<MeshType, RealType>
82 {
83 public:
84 
86 
87 public:
88 
89  CompositeLoopT() : Inherited() {};
90  CompositeLoopT(MeshType& _mesh) : Inherited(_mesh) {};
91  ~CompositeLoopT() {}
92 
93 public:
94 
95  const char *name() const { return "Uniform Composite Loop"; }
96 
97 protected: // 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 
108 protected:
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 //=============================================================================
void apply_rules(void)
Assemble here the rule sequence, by calling the constructor of the wanted rules.
Definition: CompositeLoopT.hh:99
Uniform composite Loop subdivision algorithm.
Definition: CompositeLoopT.hh:81
This class provides the composite subdivision rules for the uniform case.
Definition: CompositeT.hh:94
Helper struct.
Definition: CompositeLoopT.hh:116
Contains all the mesh ingredients like the polygonal mesh, the triangle mesh, different mesh kernels ...
Definition: MeshItems.hh:64
const char * name() const
Return name of subdivision algorithm.
Definition: CompositeLoopT.hh:95

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