PostGIS  2.5.0dev-r@@SVN_REVISION@@
Datum LWGEOM_closestpoint3d ( PG_FUNCTION_ARGS  )

Definition at line 821 of file lwgeom_functions_basic.c.

References error_if_srid_mismatch(), geometry_serialize(), lwgeom_closest_point_3d(), lwgeom_free(), lwgeom_from_gserialized(), lwgeom_is_empty(), and LWGEOM::srid.

822 {
823  GSERIALIZED *result;
824  GSERIALIZED *geom1 = PG_GETARG_GSERIALIZED_P(0);
825  GSERIALIZED *geom2 = PG_GETARG_GSERIALIZED_P(1);
826  LWGEOM *point;
827  LWGEOM *lwgeom1 = lwgeom_from_gserialized(geom1);
828  LWGEOM *lwgeom2 = lwgeom_from_gserialized(geom2);
829 
830  error_if_srid_mismatch(lwgeom1->srid, lwgeom2->srid);
831 
832  point = lwgeom_closest_point_3d(lwgeom1, lwgeom2);
833  // point = lw_dist3d_distancepoint(lwgeom1, lwgeom2, lwgeom1->srid, DIST_MIN);
834 
835  if (lwgeom_is_empty(point))
836  PG_RETURN_NULL();
837 
838  result = geometry_serialize(point);
839 
840  lwgeom_free(point);
841  lwgeom_free(lwgeom1);
842  lwgeom_free(lwgeom2);
843 
844  PG_FREE_IF_COPY(geom1, 0);
845  PG_FREE_IF_COPY(geom2, 1);
846  PG_RETURN_POINTER(result);
847 }
LWGEOM * lwgeom_from_gserialized(const GSERIALIZED *g)
Allocate a new LWGEOM from a GSERIALIZED.
void lwgeom_free(LWGEOM *geom)
Definition: lwgeom.c:1137
void error_if_srid_mismatch(int srid1, int srid2)
Definition: lwutil.c:338
int32_t srid
Definition: liblwgeom.h:398
LWGEOM * lwgeom_closest_point_3d(const LWGEOM *lw1, const LWGEOM *lw2)
Definition: measures3d.c:100
GSERIALIZED * geometry_serialize(LWGEOM *lwgeom)
int lwgeom_is_empty(const LWGEOM *geom)
Return true or false depending on whether a geometry is an "empty" geometry (no vertices members) ...
Definition: lwgeom.c:1386

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