PostGIS  3.1.6dev-r@@SVN_REVISION@@

◆ LWGEOM_force_3dz()

Datum LWGEOM_force_3dz ( PG_FUNCTION_ARGS  )

Definition at line 382 of file lwgeom_functions_basic.c.

383 {
384  GSERIALIZED *pg_geom_in = PG_GETARG_GSERIALIZED_P(0);
385  GSERIALIZED *pg_geom_out;
386  LWGEOM *lwg_in, *lwg_out;
387  double z = PG_NARGS() < 2 ? 0 : PG_GETARG_FLOAT8(1);
388 
389  /* already 3d */
390  if (gserialized_ndims(pg_geom_in) == 3 && gserialized_has_z(pg_geom_in))
391  PG_RETURN_POINTER(pg_geom_in);
392 
393  lwg_in = lwgeom_from_gserialized(pg_geom_in);
394  lwg_out = lwgeom_force_3dz(lwg_in, z);
395  pg_geom_out = geometry_serialize(lwg_out);
396  lwgeom_free(lwg_out);
397  lwgeom_free(lwg_in);
398 
399  PG_FREE_IF_COPY(pg_geom_in, 0);
400  PG_RETURN_POINTER(pg_geom_out);
401 }
int gserialized_ndims(const GSERIALIZED *g)
Return the number of dimensions (2, 3, 4) in a geometry.
Definition: gserialized.c:207
LWGEOM * lwgeom_from_gserialized(const GSERIALIZED *g)
Allocate a new LWGEOM from a GSERIALIZED.
Definition: gserialized.c:239
int gserialized_has_z(const GSERIALIZED *g)
Check if a GSERIALIZED has a Z ordinate.
Definition: gserialized.c:174
void lwgeom_free(LWGEOM *geom)
Definition: lwgeom.c:1138
LWGEOM * lwgeom_force_3dz(const LWGEOM *geom, double zval)
Definition: lwgeom.c:782

References gserialized_has_z(), gserialized_ndims(), lwgeom_force_3dz(), lwgeom_free(), and lwgeom_from_gserialized().

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