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OpenMesh/Tools/Subdivider/Uniform/CompositeSqrt3T.hh
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00001 /*===========================================================================*\
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00033 \*===========================================================================*/ 
00034 
00035 /*===========================================================================*\
00036  *                                                                           *             
00037  *   $Revision: 362 $                                                         *
00038  *   $Date: 2011-01-26 10:21:12 +0100 (Mi, 26 Jan 2011) $                   *
00039  *                                                                           *
00040 \*===========================================================================*/
00041 
00046 //=============================================================================
00047 //
00048 //  CLASS SQRT3T
00049 //
00050 //=============================================================================
00051 
00052 #ifndef OPENMESH_SUBDIVIDER_UNIFORM_COMPOSITESQRT3T_HH
00053 #define OPENMESH_SUBDIVIDER_UNIFORM_COMPOSITESQRT3T_HH
00054 
00055 
00056 //== INCLUDES =================================================================
00057 
00058 #include "Composite/CompositeT.hh"
00059 #include "Composite/CompositeTraits.hh"
00060 
00061 
00062 //== NAMESPACE ================================================================
00063 
00064 namespace OpenMesh   { // BEGIN_NS_OPENMESH
00065 namespace Subdivider { // BEGIN_NS_DECIMATER
00066 namespace Uniform    { // BEGIN_NS_UNIFORM
00067 
00068 
00069 //== CLASS DEFINITION =========================================================
00070 
00073 template <typename MeshType, typename RealType=float>
00074 class CompositeSqrt3T : public CompositeT<MeshType, RealType>
00075 {
00076 public:
00077 
00078    typedef CompositeT<MeshType, RealType> Inherited;
00079 
00080 public:
00081 
00082   CompositeSqrt3T() : Inherited() {};
00083   CompositeSqrt3T(MeshType& _mesh) : Inherited(_mesh) {};
00084   ~CompositeSqrt3T() {}
00085 
00086 public:
00087    
00088   const char *name() const { return "Uniform Composite Sqrt3"; }
00089 
00090 protected: // inherited interface
00091 
00092   void apply_rules(void)  
00093   {
00094     Inherited::Tvv3(); 
00095     Inherited::VF(); 
00096     Inherited::FF(); 
00097     Inherited::FVc(coeffs_); 
00098   }
00099 
00100 protected:
00101    
00102   typedef typename Inherited::Coeff Coeff;
00103 
00107   struct FVCoeff : public Coeff 
00108   {
00109     FVCoeff() : Coeff() { init(50); }
00110 
00111     void init(size_t _max_valence)
00112     {
00113       weights_.resize(_max_valence);
00114       std::generate(weights_.begin(), 
00115                     weights_.end(), compute_weight() );
00116     }
00117     
00118     double operator()(size_t _valence) { return weights_[_valence]; }
00119 
00122     struct compute_weight 
00123     {
00124       compute_weight() : val_(0) { }
00125 
00126       double operator()(void) // sqrt(3) weights for non-boundary vertices
00127       { 
00128         return 2.0/3.0 * (cos(2.0*M_PI/val_++)+1.0); 
00129       }
00130       size_t val_;
00131     };
00132 
00133     std::vector<double> weights_;
00134     
00135   } coeffs_;
00136 
00137 };
00138 
00139 
00140 //=============================================================================
00141 } // END_NS_UNIFORM
00142 } // END_NS_SUBDIVIDER
00143 } // END_NS_OPENMESH
00144 //=============================================================================
00145 #endif // OPENMESH_SUBDIVIDER_UNIFORM_COMPOSITESQRT3T_HH defined
00146 //=============================================================================
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