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

Definition at line 396 of file postgis/lwgeom_sfcgal.c.

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

397 {
398  GSERIALIZED *input, *output;
399  sfcgal_geometry_t *geom;
400  sfcgal_geometry_t *result;
401  srid_t srid;
402 
404 
405  input = (GSERIALIZED*) PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
406  srid = gserialized_get_srid(input);
407  geom = POSTGIS2SFCGALGeometry(input);
408  PG_FREE_IF_COPY(input, 0);
409 
410  result = sfcgal_geometry_straight_skeleton(geom);
411  sfcgal_geometry_delete(geom);
412 
413  output = SFCGALGeometry2POSTGIS(result, 0, srid);
414  sfcgal_geometry_delete(result);
415 
416  PG_RETURN_POINTER(output);
417 }
sfcgal_geometry_t * POSTGIS2SFCGALGeometry(GSERIALIZED *pglwgeom)
GSERIALIZED * SFCGALGeometry2POSTGIS(const sfcgal_geometry_t *geom, int force3D, int SRID)
static int input(void)
char ** result
Definition: liblwgeom.h:218
LWGEOM * geom
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:70

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