PostGIS  3.7.0dev-r@@SVN_REVISION@@

◆ gserialized_distance_centroid_2d()

Datum gserialized_distance_centroid_2d ( PG_FUNCTION_ARGS  )

Definition at line 682 of file gserialized_gist_2d.c.

683 {
684  BOX2DF b1, b2;
685  Datum gs1 = PG_GETARG_DATUM(0);
686  Datum gs2 = PG_GETARG_DATUM(1);
687 
688  POSTGIS_DEBUG(3, "entered function");
689 
690  /* Must be able to build box for each argument (ie, not empty geometry). */
691  if ( (gserialized_datum_get_box2df_p(gs1, &b1) == LW_SUCCESS) &&
693  {
694  double distance = box2df_distance_leaf_centroid(&b1, &b2);
695  POSTGIS_DEBUGF(3, "got boxes %s and %s", box2df_to_string(&b1), box2df_to_string(&b2));
696  PG_RETURN_FLOAT8(distance);
697  }
698  PG_RETURN_FLOAT8(FLT_MAX);
699 }
static char * box2df_to_string(const BOX2DF *a)
static double box2df_distance_leaf_centroid(const BOX2DF *a, const BOX2DF *b)
Calculate the centroid->centroid distance between the boxes.
int gserialized_datum_get_box2df_p(Datum gsdatum, BOX2DF *box2df)
#define LW_SUCCESS
Definition: liblwgeom.h:97
static double distance(double x1, double y1, double x2, double y2)
Definition: lwtree.c:1032

References box2df_distance_leaf_centroid(), box2df_to_string(), distance(), gserialized_datum_get_box2df_p(), and LW_SUCCESS.

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