PostGIS  3.1.6dev-r@@SVN_REVISION@@

◆ LWGEOM_closestpoint()

Datum LWGEOM_closestpoint ( PG_FUNCTION_ARGS  )

Definition at line 608 of file lwgeom_functions_basic.c.

609 {
611  GSERIALIZED *geom1 = PG_GETARG_GSERIALIZED_P(0);
612  GSERIALIZED *geom2 = PG_GETARG_GSERIALIZED_P(1);
613  LWGEOM *point;
614  LWGEOM *lwgeom1 = lwgeom_from_gserialized(geom1);
615  LWGEOM *lwgeom2 = lwgeom_from_gserialized(geom2);
616  gserialized_error_if_srid_mismatch(geom1, geom2, __func__);
617 
618  point = lwgeom_closest_point(lwgeom1, lwgeom2);
619 
620  if (lwgeom_is_empty(point))
621  PG_RETURN_NULL();
622 
623  result = geometry_serialize(point);
624  lwgeom_free(point);
625  lwgeom_free(lwgeom1);
626  lwgeom_free(lwgeom2);
627 
628  PG_FREE_IF_COPY(geom1, 0);
629  PG_FREE_IF_COPY(geom2, 1);
630  PG_RETURN_POINTER(result);
631 }
char result[OUT_DOUBLE_BUFFER_SIZE]
Definition: cu_print.c:267
void gserialized_error_if_srid_mismatch(const GSERIALIZED *g1, const GSERIALIZED *g2, const char *funcname)
Definition: gserialized.c:404
LWGEOM * lwgeom_from_gserialized(const GSERIALIZED *g)
Allocate a new LWGEOM from a GSERIALIZED.
Definition: gserialized.c:239
LWGEOM * lwgeom_closest_point(const LWGEOM *lw1, const LWGEOM *lw2)
Definition: measures.c:52
void lwgeom_free(LWGEOM *geom)
Definition: lwgeom.c:1138
static int lwgeom_is_empty(const LWGEOM *geom)
Return true or false depending on whether a geometry is an "empty" geometry (no vertices members)
Definition: lwinline.h:203

References gserialized_error_if_srid_mismatch(), lwgeom_closest_point(), lwgeom_free(), lwgeom_from_gserialized(), lwgeom_is_empty(), and result.

Here is the call graph for this function: