PostGIS  3.1.6dev-r@@SVN_REVISION@@

◆ gserialized_distance_centroid_2d()

Datum gserialized_distance_centroid_2d ( PG_FUNCTION_ARGS  )

Definition at line 656 of file gserialized_gist_2d.c.

657 {
658  BOX2DF b1, b2;
659  Datum gs1 = PG_GETARG_DATUM(0);
660  Datum gs2 = PG_GETARG_DATUM(1);
661 
662  POSTGIS_DEBUG(3, "entered function");
663 
664  /* Must be able to build box for each argument (ie, not empty geometry). */
665  if ( (gserialized_datum_get_box2df_p(gs1, &b1) == LW_SUCCESS) &&
667  {
668  double distance = box2df_distance_leaf_centroid(&b1, &b2);
669  POSTGIS_DEBUGF(3, "got boxes %s and %s", box2df_to_string(&b1), box2df_to_string(&b2));
670  PG_RETURN_FLOAT8(distance);
671  }
672  PG_RETURN_FLOAT8(FLT_MAX);
673 }
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:111
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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