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CompositeLoopT.hh
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33 \*===========================================================================*/
34
35 /*===========================================================================*\
36 * *
37 * $Revision: 736 $ *
38 * $Date: 2012-10-08 09:30:49 +0200 (Mo, 08. Okt 2012) $ *
39 * *
40 \*===========================================================================*/
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
78 typedef CompositeT<MeshType, RealType> Inherited;
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
123 struct compute_weight
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 //=============================================================================