PostGIS  2.4.9dev-r@@SVN_REVISION@@

◆ lwgeom_add_bbox_deep()

void lwgeom_add_bbox_deep ( LWGEOM lwgeom,
GBOX gbox 
)

Compute a box for geom and all sub-geometries, if not already computed.

Definition at line 660 of file lwgeom.c.

References LWGEOM::bbox, LWGEOM::flags, FLAGS_SET_BBOX, gbox_clone(), gbox_new(), LWCOLLECTION::geoms, lwgeom_calculate_gbox(), lwgeom_is_collection(), lwgeom_is_empty(), and LWCOLLECTION::ngeoms.

Referenced by geography_distance_knn(), and geography_distance_uncached().

661 {
662  if ( lwgeom_is_empty(lwgeom) ) return;
663 
664  FLAGS_SET_BBOX(lwgeom->flags, 1);
665 
666  if ( ! ( gbox || lwgeom->bbox ) )
667  {
668  lwgeom->bbox = gbox_new(lwgeom->flags);
669  lwgeom_calculate_gbox(lwgeom, lwgeom->bbox);
670  }
671  else if ( gbox && ! lwgeom->bbox )
672  {
673  lwgeom->bbox = gbox_clone(gbox);
674  }
675 
676  if ( lwgeom_is_collection(lwgeom) )
677  {
678  int i;
679  LWCOLLECTION *lwcol = (LWCOLLECTION*)lwgeom;
680 
681  for ( i = 0; i < lwcol->ngeoms; i++ )
682  {
683  lwgeom_add_bbox_deep(lwcol->geoms[i], lwgeom->bbox);
684  }
685  }
686 }
GBOX * gbox_new(uint8_t flags)
Create a new gbox with the dimensionality indicated by the flags.
Definition: g_box.c:43
GBOX * bbox
Definition: liblwgeom.h:398
void lwgeom_add_bbox_deep(LWGEOM *lwgeom, GBOX *gbox)
Compute a box for geom and all sub-geometries, if not already computed.
Definition: lwgeom.c:660
uint8_t flags
Definition: liblwgeom.h:397
LWGEOM ** geoms
Definition: liblwgeom.h:509
int lwgeom_is_empty(const LWGEOM *geom)
Return true or false depending on whether a geometry is an "empty" geometry (no vertices members) ...
Definition: lwgeom.c:1346
#define FLAGS_SET_BBOX(flags, value)
Definition: liblwgeom.h:148
int lwgeom_is_collection(const LWGEOM *geom)
Determine whether a LWGEOM can contain sub-geometries or not.
Definition: lwgeom.c:1040
int lwgeom_calculate_gbox(const LWGEOM *lwgeom, GBOX *gbox)
Calculate the gbox for this goemetry, a cartesian box or geodetic box, depending on how it is flagged...
Definition: lwgeom.c:701
GBOX * gbox_clone(const GBOX *gbox)
Definition: g_box.c:56
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