PostGIS  2.2.7dev-r@@SVN_REVISION@@
Datum geos_difference ( PG_FUNCTION_ARGS  )

Definition at line 1420 of file postgis/lwgeom_geos.c.

References geometry_serialize(), lwgeom_difference(), lwgeom_free(), and lwgeom_from_gserialized().

1421 {
1422  GSERIALIZED *geom1;
1423  GSERIALIZED *geom2;
1424  GSERIALIZED *result;
1425  LWGEOM *lwgeom1, *lwgeom2, *lwresult ;
1426 
1427  geom1 = PG_GETARG_GSERIALIZED_P(0);
1428  geom2 = PG_GETARG_GSERIALIZED_P(1);
1429 
1430  lwgeom1 = lwgeom_from_gserialized(geom1) ;
1431  lwgeom2 = lwgeom_from_gserialized(geom2) ;
1432 
1433  lwresult = lwgeom_difference(lwgeom1, lwgeom2) ;
1434  result = geometry_serialize(lwresult) ;
1435 
1436  lwgeom_free(lwgeom1) ;
1437  lwgeom_free(lwgeom2) ;
1438  lwgeom_free(lwresult) ;
1439 
1440  PG_FREE_IF_COPY(geom1, 0);
1441  PG_FREE_IF_COPY(geom2, 1);
1442 
1443  PG_RETURN_POINTER(result);
1444 }
LWGEOM * lwgeom_from_gserialized(const GSERIALIZED *g)
Allocate a new LWGEOM from a GSERIALIZED.
void lwgeom_free(LWGEOM *geom)
Definition: lwgeom.c:1050
LWGEOM * lwgeom_difference(const LWGEOM *geom1, const LWGEOM *geom2)
GSERIALIZED * geometry_serialize(LWGEOM *lwgeom)

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