PostGIS  3.4.0dev-r@@SVN_REVISION@@

◆ gserialized_distance_centroid_2d()

Datum gserialized_distance_centroid_2d ( PG_FUNCTION_ARGS  )

Definition at line 672 of file gserialized_gist_2d.c.

673 {
674  BOX2DF b1, b2;
675  Datum gs1 = PG_GETARG_DATUM(0);
676  Datum gs2 = PG_GETARG_DATUM(1);
677 
678  POSTGIS_DEBUG(3, "entered function");
679 
680  /* Must be able to build box for each argument (ie, not empty geometry). */
681  if ( (gserialized_datum_get_box2df_p(gs1, &b1) == LW_SUCCESS) &&
683  {
684  double distance = box2df_distance_leaf_centroid(&b1, &b2);
685  POSTGIS_DEBUGF(3, "got boxes %s and %s", box2df_to_string(&b1), box2df_to_string(&b2));
686  PG_RETURN_FLOAT8(distance);
687  }
688  PG_RETURN_FLOAT8(FLT_MAX);
689 }
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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