PostGIS  2.5.0dev-r@@SVN_REVISION@@
Datum sfcgal_union ( PG_FUNCTION_ARGS  )

Definition at line 585 of file postgis/lwgeom_sfcgal.c.

References gserialized_get_srid(), POSTGIS2SFCGALGeometry(), sfcgal_postgis_init(), and SFCGALGeometry2POSTGIS().

586 {
587  GSERIALIZED *input0, *input1, *output;
588  sfcgal_geometry_t *geom0, *geom1;
589  sfcgal_geometry_t *result;
590  srid_t srid;
591 
593 
594  input0 = (GSERIALIZED*) PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
595  srid = gserialized_get_srid(input0);
596  input1 = (GSERIALIZED*) PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
597  geom0 = POSTGIS2SFCGALGeometry(input0);
598  PG_FREE_IF_COPY(input0, 0);
599  geom1 = POSTGIS2SFCGALGeometry(input1);
600  PG_FREE_IF_COPY(input1, 1);
601 
602  result = sfcgal_geometry_union(geom0, geom1);
603  sfcgal_geometry_delete(geom0);
604  sfcgal_geometry_delete(geom1);
605 
606  output = SFCGALGeometry2POSTGIS(result, 0, srid);
607  sfcgal_geometry_delete(result);
608 
609  PG_RETURN_POINTER(output);
610 }
sfcgal_geometry_t * POSTGIS2SFCGALGeometry(GSERIALIZED *pglwgeom)
GSERIALIZED * SFCGALGeometry2POSTGIS(const sfcgal_geometry_t *geom, int force3D, int SRID)
void sfcgal_postgis_init(void)
int32_t gserialized_get_srid(const GSERIALIZED *s)
Extract the SRID from the serialized form (it is packed into three bytes so this is a handy function)...
Definition: g_serialized.c:99

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