ColGrid.h

//---------------------------------------------------------------------------
//                              Grid
//---------------------------------------------------------------------------
//  Copyright (C):
//---------------------------------------------------------------------------
//CVSId: "@(#)$Id: ColGrid.h,v 1.3 2004/06/09 12:23:17 weller Exp $"


#ifndef Grid_H
#define Grid_H
#if defined(__sgi) || defined(_WIN32)
#pragma once
#endif


//---------------------------------------------------------------------------
//  Includes
//---------------------------------------------------------------------------

#include <vector>
#include <set>

#include <ColGridCell.h>
#include <ColGridObj.h>
#include <col_import_export.h>


//---------------------------------------------------------------------------
//  Forward References
//---------------------------------------------------------------------------

namespace col {
    
class ColPair;

//---------------------------------------------------------------------------
//  The Class
//---------------------------------------------------------------------------

class COL_EXPORTIMPORT Grid
{

    friend class GridObj;

public:

    Grid( unsigned int size[3], float  min[3], float  max[3] );
    virtual ~Grid();

    void            addObject( GridObj* gridObj );
    void            removeObject( GridObj* gridObj );
    GridCell*       getCellP( unsigned int x, unsigned int y, unsigned int z );
    void            getCollPairs( std::vector<ColPair> *collPairs, unsigned int *neighbors );
    unsigned int    getNrCollPairs();

//---------------------------------------------------------------------------
//  Protected Instance methods
//---------------------------------------------------------------------------

protected:

    unsigned int    calcIndex( unsigned int x, unsigned int y,
                               unsigned int z ) const;
    unsigned int    calcIndex( const float pos[3] ) const;
    void            calcIndex( const float pos[3],  unsigned int ind[3] ) const;

    void    deleteCells( void );
    void    deleteObjs( void );

//---------------------------------------------------------------------------
//  Instance variables
//---------------------------------------------------------------------------

    GridCell**      m_cell;
    unsigned int    m_size[3], m_xySize;
    float           m_min[3]; 
    float           m_max[3]; 
    float           m_stepSize[3]; 
     
    std::set<GridObj*>  m_objects;
    unsigned int        m_collTestCycle;
    unsigned int        m_objTestCycle;

//---------------------------------------------------------------------------
//  Private Instance methods
//---------------------------------------------------------------------------

protected:

    // prohibit copy constructor (move to 'public' if you need one)
    explicit Grid( const Grid &source );

    // prohibit assignment
    Grid& operator = ( const Grid &source );

};


}   //namespace col 

#endif /* Grid_H */

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