tgeo_tile.h

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/*****************************************************************************
 *
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 * Copyright (c) 2016-2025, Université libre de Bruxelles and MobilityDB
 * contributors
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 * MobilityDB includes portions of PostGIS version 3 source code released
 * under the GNU General Public License (GPLv2 or later).
 * Copyright (c) 2001-2025, PostGIS contributors
 *
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#ifndef __TPOINT_TILE_H__
#define __TPOINT_TILE_H__
 
/* PostGIS */
#include <liblwgeom.h>
/* MEOS */
#include <meos.h>
 
#define MAXDIMS 4
 
/*****************************************************************************/
 
typedef struct
{
  int ndims;             
  int count[MAXDIMS];    
  uint8_t byte[1];       
} BitMatrix;
 
typedef struct STboxGridState
{
  bool done;               
  bool hasx;               
  bool hasz;               
  bool hast;               
  int i;                   
  double xsize;            
  double ysize;            
  double zsize;            
  int64 tunits;            
  STBox box;               
  const Temporal *temp;    
  BitMatrix *bm;           
  double x;                
  double y;                
  double z;                
  TimestampTz t;           
  int ntiles;              
  int max_coords[MAXDIMS]; 
  int coords[MAXDIMS];     
} STboxGridState;
 
/*****************************************************************************/
 
extern BitMatrix *bitmatrix_make(int *count, int ndims);
extern int tpoint_set_tiles(const Temporal *temp, const STboxGridState *state,
  BitMatrix *bm);
extern Temporal *tpoint_at_tile(const Temporal *temp, const STBox *box);
 
extern void stbox_tile_state_set(double x, double y, double z, TimestampTz t,
  double xsize, double ysize, double zsize, int64 tunits, bool hasx, bool hasz,
  bool hast, int32 srid, STBox *result);
extern STboxGridState *stbox_tile_state_make(const Temporal *temp,
  const STBox *box, double xsize, double ysize, double zsize, 
  const Interval *duration, POINT3DZ sorigin, TimestampTz torigin, 
  bool border_inc);
extern void stbox_tile_state_next(STboxGridState *state);
extern bool stbox_tile_state_get(STboxGridState *state, STBox *box);
 
extern STboxGridState *tgeo_space_time_tile_init(const Temporal *temp,
  double xsize, double ysize, double zsize, const Interval *duration,
  const GSERIALIZED *sorigin, TimestampTz torigin, bool bitmatrix, 
  bool border_inc, int *ntiles);
 
extern STBox *stbox_space_time_tile(const GSERIALIZED *point, TimestampTz t,
  double xsize, double ysize, double zsize, const Interval *duration,
  const GSERIALIZED *sorigin, TimestampTz torigin, bool hasx, bool hast);
 
/*****************************************************************************/
 
#endif