PostGIS  2.2.7dev-r@@SVN_REVISION@@
Datum gserialized_distance_box_2d ( PG_FUNCTION_ARGS  )

Definition at line 635 of file gserialized_gist_2d.c.

References box2df_distance(), box2df_to_string(), distance(), gserialized_datum_get_box2df_p(), and LW_SUCCESS.

636 {
637  BOX2DF b1, b2;
638  Datum gs1 = PG_GETARG_DATUM(0);
639  Datum gs2 = PG_GETARG_DATUM(1);
640 
641  POSTGIS_DEBUG(3, "entered function");
642 
643  /* Must be able to build box for each argument (ie, not empty geometry). */
644  if ( (gserialized_datum_get_box2df_p(gs1, &b1) == LW_SUCCESS) &&
646  {
647  double distance = box2df_distance(&b1, &b2);
648  POSTGIS_DEBUGF(3, "got boxes %s and %s", box2df_to_string(&b1), box2df_to_string(&b2));
649  PG_RETURN_FLOAT8(distance);
650  }
651  PG_RETURN_FLOAT8(FLT_MAX);
652 }
#define LW_SUCCESS
Definition: liblwgeom.h:65
static double box2df_distance(const BOX2DF *a, const BOX2DF *b)
Calculate the box->box distance.
static char * box2df_to_string(const BOX2DF *a)
static int gserialized_datum_get_box2df_p(Datum gsdatum, BOX2DF *box2df)
Peak into a GSERIALIZED datum to find the bounding box.
Datum distance(PG_FUNCTION_ARGS)

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