PostGIS  2.5.7dev-r@@SVN_REVISION@@

◆ LWGEOM_force_2d()

Datum LWGEOM_force_2d ( PG_FUNCTION_ARGS  )

Definition at line 367 of file lwgeom_functions_basic.c.

368 {
369  GSERIALIZED *pg_geom_in = PG_GETARG_GSERIALIZED_P(0);
370  GSERIALIZED *pg_geom_out;
371  LWGEOM *lwg_in, *lwg_out;
372 
373  /* already 2d */
374  if ( gserialized_ndims(pg_geom_in) == 2 ) PG_RETURN_POINTER(pg_geom_in);
375 
376  lwg_in = lwgeom_from_gserialized(pg_geom_in);
377  lwg_out = lwgeom_force_2d(lwg_in);
378  pg_geom_out = geometry_serialize(lwg_out);
379  lwgeom_free(lwg_out);
380  lwgeom_free(lwg_in);
381 
382  PG_FREE_IF_COPY(pg_geom_in, 0);
383  PG_RETURN_POINTER(pg_geom_out);
384 }
lwgeom_from_gserialized
LWGEOM * lwgeom_from_gserialized(const GSERIALIZED *g)
Allocate a new LWGEOM from a GSERIALIZED.
Definition: g_serialized.c:1530
gserialized_ndims
int gserialized_ndims(const GSERIALIZED *gser)
Return the number of dimensions (2, 3, 4) in a geometry.
Definition: g_serialized.c:60
lwgeom_free
void lwgeom_free(LWGEOM *geom)
Definition: lwgeom.c:1144
lwgeom_force_2d
LWGEOM * lwgeom_force_2d(const LWGEOM *geom)
Strip out the Z/M components of an LWGEOM.
Definition: lwgeom.c:784
geometry_serialize
GSERIALIZED * geometry_serialize(LWGEOM *lwgeom)

References geometry_serialize(), gserialized_ndims(), lwgeom_force_2d(), lwgeom_free(), and lwgeom_from_gserialized().

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