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CompositeLoopT.hh
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41 
46 //=============================================================================
47 //
48 // CLASS LoopT
49 //
50 //=============================================================================
51 
52 #ifndef OPENMESH_SUBDIVIDER_UNIFORM_COMPOSITELOOPT_HH
53 #define OPENMESH_SUBDIVIDER_UNIFORM_COMPOSITELOOPT_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_DECIMATER
67 
68 
69 //== CLASS DEFINITION =========================================================
70 
73 template <class MeshType, class RealType=float>
74 class CompositeLoopT : public CompositeT<MeshType, RealType>
75 {
76 public:
77 
79 
80 public:
81 
82  CompositeLoopT() : Inherited() {};
83  CompositeLoopT(MeshType& _mesh) : Inherited(_mesh) {};
84  ~CompositeLoopT() {}
85 
86 public:
87 
88  const char *name() const { return "Uniform Composite Loop"; }
89 
90 protected: // inherited interface
91 
92  void apply_rules(void)
93  {
94  Inherited::Tvv4();
95  Inherited::VdE();
96  Inherited::EVc(coeffs_);
97  Inherited::VdE();
98  Inherited::EVc(coeffs_);
99  }
100 
101 protected:
102 
103  typedef typename Inherited::Coeff Coeff;
104 
105 
109  struct EVCoeff : public Coeff
110  {
111  EVCoeff() : Coeff() { init(50); }
112 
113  void init(size_t _max_valence)
114  {
115  weights_.resize(_max_valence);
116  std::generate(weights_.begin(),
117  weights_.end(), compute_weight() );
118  }
119 
120  double operator()(size_t _valence) { return weights_[_valence]; }
121 
124  {
125  compute_weight() : val_(0) { }
126 
127  double operator()(void) // Loop weights for non-boundary vertices
128  {
129  // 1 3 2 * pi
130  // - * ( --- + cos ( ------- ) )� - 1.0
131  // 2 2 valence
132  double f1 = 1.5 + cos(2.0*M_PI/val_++);
133  return 0.5 * f1 * f1 - 1.0;
134  }
135  size_t val_;
136 
137  };
138 
139  std::vector<double> weights_;
140  } coeffs_;
141 
142 };
143 
144 //=============================================================================
145 } // END_NS_UNIFORM
146 } // END_NS_SUBDIVIDER
147 } // END_NS_OPENMESH
148 //=============================================================================
149 #endif // OPENMESH_SUBDIVIDER_UNIFORM_COMPOSITELOOPT_HH defined
150 //=============================================================================
This class provides the composite subdivision rules for the uniform case.
Definition: CompositeT.hh:87
Helper struct.
Definition: CompositeLoopT.hh:109
Uniform composite Loop subdivision algorithm.
Definition: CompositeLoopT.hh:74
const char * name() const
Return name of subdivision algorithm.
Definition: CompositeLoopT.hh:88
void apply_rules(void)
Assemble here the rule sequence, by calling the constructor of the wanted rules.
Definition: CompositeLoopT.hh:92
Contains all the mesh ingredients like the polygonal mesh, the triangle mesh, different mesh kernels ...
Definition: MeshItems.hh:56

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