PostGIS  2.2.8dev-r@@SVN_REVISION@@

◆ LWGEOM_closestpoint3d()

Datum LWGEOM_closestpoint3d ( PG_FUNCTION_ARGS  )

Definition at line 805 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(), LWGEOM_shortestline3d(), PG_FUNCTION_INFO_V1(), and LWGEOM::srid.

Referenced by LWGEOM_maxdistance2d_linestring().

806 {
807  GSERIALIZED *result;
808  GSERIALIZED *geom1 = PG_GETARG_GSERIALIZED_P(0);
809  GSERIALIZED *geom2 = PG_GETARG_GSERIALIZED_P(1);
810  LWGEOM *point;
811  LWGEOM *lwgeom1 = lwgeom_from_gserialized(geom1);
812  LWGEOM *lwgeom2 = lwgeom_from_gserialized(geom2);
813 
814  error_if_srid_mismatch(lwgeom1->srid, lwgeom2->srid);
815 
816  point = lwgeom_closest_point_3d(lwgeom1, lwgeom2);
817  // point = lw_dist3d_distancepoint(lwgeom1, lwgeom2, lwgeom1->srid, DIST_MIN);
818 
819  if (lwgeom_is_empty(point))
820  PG_RETURN_NULL();
821 
822  result = geometry_serialize(point);
823 
824  lwgeom_free(point);
825  lwgeom_free(lwgeom1);
826  lwgeom_free(lwgeom2);
827 
828  PG_FREE_IF_COPY(geom1, 0);
829  PG_FREE_IF_COPY(geom2, 1);
830  PG_RETURN_POINTER(result);
831 }
LWGEOM * lwgeom_from_gserialized(const GSERIALIZED *g)
Allocate a new LWGEOM from a GSERIALIZED.
void lwgeom_free(LWGEOM *geom)
Definition: lwgeom.c:1050
void error_if_srid_mismatch(int srid1, int srid2)
Definition: lwutil.c:341
int32_t srid
Definition: liblwgeom.h:383
LWGEOM * lwgeom_closest_point_3d(const LWGEOM *lw1, const LWGEOM *lw2)
Definition: measures3d.c:76
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:1297
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