PostGIS  2.2.7dev-r@@SVN_REVISION@@
int gserialized_get_gbox_p ( const GSERIALIZED g,
GBOX box 
)

Pull a GBOX from the header of a GSERIALIZED, if one is available.

If it is not, calculate it from the geometry. If that doesn't work (null or empty) return LW_FAILURE.

Pull a GBOX from the header of a GSERIALIZED, if one is available.

Definition at line 371 of file g_serialized.c.

References gbox_float_round(), gserialized_peek_gbox_p(), gserialized_read_gbox_p(), LW_SUCCESS, lwgeom_calculate_gbox(), lwgeom_free(), and lwgeom_from_gserialized().

Referenced by BOX2D_combine(), CircTreePIP(), compute_gserialized_stats_mode(), contains(), containsproperly(), convexhull(), coveredby(), covers(), crosses(), disjoint(), geography_bestsrid(), geography_point_outside(), geos_intersects(), isvalid(), isvalidreason(), lwgeom_cmp(), lwgeom_eq(), lwgeom_ge(), lwgeom_gt(), lwgeom_le(), lwgeom_lt(), LWGEOM_to_BOX2DF(), optimistic_overlap(), overlaps(), ST_Equals(), and touches().

372 {
373  /* Try to just read the serialized box. */
374  if ( gserialized_read_gbox_p(g, box) == LW_SUCCESS )
375  {
376  return LW_SUCCESS;
377  }
378  /* No box? Try to peek into simpler geometries and */
379  /* derive a box without creating an lwgeom */
380  else if ( gserialized_peek_gbox_p(g, box) == LW_SUCCESS )
381  {
382  return LW_SUCCESS;
383  }
384  /* Damn! Nothing for it but to create an lwgeom... */
385  /* See http://trac.osgeo.org/postgis/ticket/1023 */
386  else
387  {
388  LWGEOM *lwgeom = lwgeom_from_gserialized(g);
389  int ret = lwgeom_calculate_gbox(lwgeom, box);
390  gbox_float_round(box);
391  lwgeom_free(lwgeom);
392  return ret;
393  }
394 }
int gserialized_read_gbox_p(const GSERIALIZED *g, GBOX *gbox)
Pull a GBOX from the header of a GSERIALIZED, if one is available.
Definition: g_serialized.c:158
LWGEOM * lwgeom_from_gserialized(const GSERIALIZED *g)
Allocate a new LWGEOM from a GSERIALIZED.
static int gserialized_peek_gbox_p(const GSERIALIZED *g, GBOX *gbox)
Definition: g_serialized.c:205
void lwgeom_free(LWGEOM *geom)
Definition: lwgeom.c:1050
#define LW_SUCCESS
Definition: liblwgeom.h:65
int lwgeom_calculate_gbox(const LWGEOM *lwgeom, GBOX *gbox)
Calculate bounding box of a geometry, automatically taking into account whether it is cartesian or ge...
Definition: lwgeom.c:652
void gbox_float_round(GBOX *gbox)
Round given GBOX to float boundaries.
Definition: g_box.c:682

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