PostGIS  2.1.10dev-r@@SVN_REVISION@@
Datum LWGEOM_force_3dz ( PG_FUNCTION_ARGS  )

Definition at line 360 of file lwgeom_functions_basic.c.

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

361 {
362  GSERIALIZED *pg_geom_in = (GSERIALIZED *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
363  GSERIALIZED *pg_geom_out;
364  LWGEOM *lwg_in, *lwg_out;
365 
366  /* already 3d */
367  if ( gserialized_ndims(pg_geom_in) == 3 && gserialized_has_z(pg_geom_in) )
368  PG_RETURN_POINTER(pg_geom_in);
369 
370  lwg_in = lwgeom_from_gserialized(pg_geom_in);
371  lwg_out = lwgeom_force_3dz(lwg_in);
372  pg_geom_out = geometry_serialize(lwg_out);
373  lwgeom_free(lwg_out);
374  lwgeom_free(lwg_in);
375 
376  PG_FREE_IF_COPY(pg_geom_in, 0);
377  PG_RETURN_POINTER(pg_geom_out);
378 }
LWGEOM * lwgeom_from_gserialized(const GSERIALIZED *g)
Allocate a new LWGEOM from a GSERIALIZED.
LWGEOM * lwgeom_force_3dz(const LWGEOM *geom)
Definition: lwgeom.c:652
void lwgeom_free(LWGEOM *geom)
Definition: lwgeom.c:1006
int gserialized_ndims(const GSERIALIZED *gser)
Return the number of dimensions (2, 3, 4) in a geometry.
Definition: g_serialized.c:40
int gserialized_has_z(const GSERIALIZED *gser)
Check if a GSERIALIZED has a Z ordinate.
Definition: g_serialized.c:25
GSERIALIZED * geometry_serialize(LWGEOM *lwgeom)

Here is the call graph for this function: