PostGIS  2.2.7dev-r@@SVN_REVISION@@
Datum gserialized_distance_centroid_2d ( PG_FUNCTION_ARGS  )

Definition at line 615 of file gserialized_gist_2d.c.

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

616 {
617  BOX2DF b1, b2;
618  Datum gs1 = PG_GETARG_DATUM(0);
619  Datum gs2 = PG_GETARG_DATUM(1);
620 
621  POSTGIS_DEBUG(3, "entered function");
622 
623  /* Must be able to build box for each argument (ie, not empty geometry). */
624  if ( (gserialized_datum_get_box2df_p(gs1, &b1) == LW_SUCCESS) &&
626  {
627  double distance = box2df_distance_leaf_centroid(&b1, &b2);
628  POSTGIS_DEBUGF(3, "got boxes %s and %s", box2df_to_string(&b1), box2df_to_string(&b2));
629  PG_RETURN_FLOAT8(distance);
630  }
631  PG_RETURN_FLOAT8(FLT_MAX);
632 }
#define LW_SUCCESS
Definition: liblwgeom.h:65
static double box2df_distance_leaf_centroid(const BOX2DF *a, const BOX2DF *b)
Calculate the centroid->centroid distance between the boxes.
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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