PostGIS  2.3.7dev-r@@SVN_REVISION@@
Datum LWGEOM_closestpoint3d ( PG_FUNCTION_ARGS  )

Definition at line 820 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.

821 {
822  GSERIALIZED *result;
823  GSERIALIZED *geom1 = PG_GETARG_GSERIALIZED_P(0);
824  GSERIALIZED *geom2 = PG_GETARG_GSERIALIZED_P(1);
825  LWGEOM *point;
826  LWGEOM *lwgeom1 = lwgeom_from_gserialized(geom1);
827  LWGEOM *lwgeom2 = lwgeom_from_gserialized(geom2);
828 
829  error_if_srid_mismatch(lwgeom1->srid, lwgeom2->srid);
830 
831  point = lwgeom_closest_point_3d(lwgeom1, lwgeom2);
832  // point = lw_dist3d_distancepoint(lwgeom1, lwgeom2, lwgeom1->srid, DIST_MIN);
833 
834  if (lwgeom_is_empty(point))
835  PG_RETURN_NULL();
836 
837  result = geometry_serialize(point);
838 
839  lwgeom_free(point);
840  lwgeom_free(lwgeom1);
841  lwgeom_free(lwgeom2);
842 
843  PG_FREE_IF_COPY(geom1, 0);
844  PG_FREE_IF_COPY(geom2, 1);
845  PG_RETURN_POINTER(result);
846 }
LWGEOM * lwgeom_from_gserialized(const GSERIALIZED *g)
Allocate a new LWGEOM from a GSERIALIZED.
void lwgeom_free(LWGEOM *geom)
Definition: lwgeom.c:1063
void error_if_srid_mismatch(int srid1, int srid2)
Definition: lwutil.c:369
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:1310

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