DarioS
61 lines
2.4 KiB
C++
61 lines
2.4 KiB
C++
//----------------------------------------------------------------------------
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// EgalTech 2014-2014
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//----------------------------------------------------------------------------
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// File : EGkPointGrid3d.h Data : 15.05.14 Versione : 1.5e5
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// Contenuto : Dichiarazione della classe PointGrid3d.
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// Indicizzazione spaziale di Point3d mediante hash grid.
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//
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//
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// Modifiche : 15.05.14 DS Creazione modulo.
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//
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//
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//----------------------------------------------------------------------------
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#pragma once
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#include "/EgtDev/Include/EGkBBox3d.h"
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#include "/EgtDev/Include/EgtNumCollection.h"
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#include <unordered_map>
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struct IBox ;
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//----------------------- Macro per import/export ----------------------------
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#undef EGK_EXPORT
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#if defined( I_AM_EGK) // da definirsi solo nella DLL
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#define EGK_EXPORT __declspec( dllexport)
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#else
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#define EGK_EXPORT __declspec( dllimport)
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#endif
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//----------------------------------------------------------------------------
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class PointGrid3d
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{
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public :
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EGK_EXPORT PointGrid3d( void) : m_dCellDim( 100 * EPS_SMALL), m_dInvCellDim( 1 / m_dCellDim) {}
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EGK_EXPORT bool Init( int nBuckets, double dCellDim = 100 * EPS_SMALL) ;
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EGK_EXPORT bool InsertPoint( const Point3d& ptP, int nId) ;
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EGK_EXPORT bool RemovePoint( const Point3d& ptP, int nId) ;
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EGK_EXPORT bool Find( const BBox3d& b3Test, INTVECTOR& vnIds) const ;
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EGK_EXPORT bool Find( const Point3d& ptTest, double dTol, INTVECTOR& vnIds) const ;
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EGK_EXPORT bool Find( const Point3d& ptTest, double dTol, int& nId) const ;
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EGK_EXPORT bool FindNearest( const Point3d& ptTest, INTVECTOR& vnIds) const ;
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EGK_EXPORT bool FindNearest( const Point3d& ptTest, double dTol, int& nId) const ;
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EGK_EXPORT bool First( int& nId) const ;
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private :
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inline int Get1dCellNbr( double dCoord) const ;
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inline bool Get3dRangeNbr( const BBox3d& b3Test, IBox& iBox) const ;
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inline bool Get3dRangeNbr( const Point3d& ptTest, double dTol, IBox& iBox) const ;
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inline int PointHash( int nX, int nY, int nZ) const ;
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private :
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typedef std::unordered_multimap<int,std::pair<Point3d,int>> IPNTI_UMMAP ;
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typedef std::pair<IPNTI_UMMAP::const_iterator,IPNTI_UMMAP::const_iterator> IPNTI_UMMAP_CRANGE ;
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private :
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BBox3d m_BBox ;
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double m_dCellDim ;
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double m_dInvCellDim ;
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IPNTI_UMMAP m_MMap ;
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} ;
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