OpenMesh
OpenMesh/Tools/Decimater/ModQuadricT.hh
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00001 /*===========================================================================*\
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00033 \*===========================================================================*/ 
00034 
00035 /*===========================================================================*\
00036  *                                                                           *             
00037  *   $Revision: 460 $                                                         *
00038  *   $Date: 2011-11-16 10:45:08 +0100 (Mi, 16 Nov 2011) $                   *
00039  *                                                                           *
00040 \*===========================================================================*/
00041 
00042 
00043 //=============================================================================
00044 //
00045 //  CLASS ModQuadricT
00046 //
00047 //=============================================================================
00048 
00049 #ifndef OSG_MODQUADRIC_HH
00050 #define OSG_MODQUADRIC_HH
00051 
00052 
00053 //== INCLUDES =================================================================
00054 
00055 #include <float.h>
00056 #include <OpenMesh/Tools/Decimater/ModBaseT.hh>
00057 #include <OpenMesh/Core/Utils/Property.hh>
00058 #include <OpenMesh/Core/Utils/vector_cast.hh>
00059 #include <OpenMesh/Core/Geometry/QuadricT.hh>
00060 
00061 
00062 //== NAMESPACE ================================================================
00063 
00064 namespace OpenMesh  {
00065 namespace Decimater {
00066 
00067 
00068 //== CLASS DEFINITION =========================================================
00069 
00070 
00075 template <class DecimaterType>
00076 class ModQuadricT : public ModBaseT<DecimaterType>
00077 {
00078 public:
00079 
00080   // Defines the types Self, Handle, Base, Mesh, and CollapseInfo
00081   // and the memberfunction name()
00082   DECIMATING_MODULE( ModQuadricT, DecimaterType, Quadric );
00083 
00084 public:
00085 
00089   ModQuadricT( DecimaterType &_dec )
00090     : Base(_dec, false)
00091   {
00092     unset_max_err();
00093     Base::mesh().add_property( quadrics_ );
00094   }
00095 
00096 
00098   virtual ~ModQuadricT()
00099   {
00100     Base::mesh().remove_property(quadrics_);
00101   }
00102 
00103 
00104 public: // inherited
00105 
00107   virtual void initialize(void);
00108 
00114   virtual float collapse_priority(const CollapseInfo& _ci)
00115   {
00116     using namespace OpenMesh;
00117 
00118     typedef Geometry::QuadricT<double> Q;
00119 
00120     Q q = Base::mesh().property(quadrics_, _ci.v0);
00121     q += Base::mesh().property(quadrics_, _ci.v1);
00122 
00123     double err = q(_ci.p1);
00124 
00125     //min_ = std::min(err, min_);
00126     //max_ = std::max(err, max_);
00127 
00128     //double err = q( p );
00129 
00130     return float( (err < max_err_) ? err : float( Base::ILLEGAL_COLLAPSE ) );
00131   }
00132 
00133 
00135   virtual void postprocess_collapse(const CollapseInfo& _ci)
00136   {
00137     Base::mesh().property(quadrics_, _ci.v1) +=
00138       Base::mesh().property(quadrics_, _ci.v0);
00139   }
00140 
00141 
00142 
00143 public: // specific methods
00144 
00151   void set_max_err(double _err, bool _binary=true)
00152   {
00153     max_err_ = _err;
00154     Base::set_binary(_binary);
00155   }
00156 
00159   void unset_max_err(void)
00160   {
00161     max_err_ = DBL_MAX;
00162     Base::set_binary(false);
00163   }
00164 
00166   double max_err() const { return max_err_; }
00167 
00168 
00169 private:
00170 
00171   // maximum quadric error
00172   double max_err_;
00173 
00174   // this vertex property stores a quadric for each vertex
00175   VPropHandleT< Geometry::QuadricT<double> >  quadrics_;
00176 };
00177 
00178 //=============================================================================
00179 } // END_NS_DECIMATER
00180 } // END_NS_OPENMESH
00181 //=============================================================================
00182 #if defined(OM_INCLUDE_TEMPLATES) && !defined(OPENMESH_DECIMATER_MODQUADRIC_CC)
00183 #define OSG_MODQUADRIC_TEMPLATES
00184 #include "ModQuadricT.cc"
00185 #endif
00186 //=============================================================================
00187 #endif // OSG_MODQUADRIC_HH defined
00188 //=============================================================================
00189 
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