PostGIS  2.5.0dev-r@@SVN_REVISION@@

◆ geos_difference()

Datum geos_difference ( PG_FUNCTION_ARGS  )

Definition at line 1248 of file postgis/lwgeom_geos.c.

References geometry_serialize(), lwgeom_difference(), lwgeom_free(), lwgeom_from_gserialized(), PG_FUNCTION_INFO_V1(), and pointonsurface().

Referenced by geos_intersection().

1249 {
1250  GSERIALIZED *geom1;
1251  GSERIALIZED *geom2;
1252  GSERIALIZED *result;
1253  LWGEOM *lwgeom1, *lwgeom2, *lwresult ;
1254 
1255  geom1 = PG_GETARG_GSERIALIZED_P(0);
1256  geom2 = PG_GETARG_GSERIALIZED_P(1);
1257 
1258  lwgeom1 = lwgeom_from_gserialized(geom1) ;
1259  lwgeom2 = lwgeom_from_gserialized(geom2) ;
1260 
1261  lwresult = lwgeom_difference(lwgeom1, lwgeom2) ;
1262  result = geometry_serialize(lwresult) ;
1263 
1264  lwgeom_free(lwgeom1) ;
1265  lwgeom_free(lwgeom2) ;
1266  lwgeom_free(lwresult) ;
1267 
1268  PG_FREE_IF_COPY(geom1, 0);
1269  PG_FREE_IF_COPY(geom2, 1);
1270 
1271  PG_RETURN_POINTER(result);
1272 }
LWGEOM * lwgeom_from_gserialized(const GSERIALIZED *g)
Allocate a new LWGEOM from a GSERIALIZED.
void lwgeom_free(LWGEOM *geom)
Definition: lwgeom.c:1144
LWGEOM * lwgeom_difference(const LWGEOM *geom1, const LWGEOM *geom2)
GSERIALIZED * geometry_serialize(LWGEOM *lwgeom)
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