910 GEOSGeometry *g1, *g3;
916 geom1 = PG_GETARG_GSERIALIZED_P(0);
920 PG_RETURN_POINTER(geom1);
931 g3 = GEOSConvexHull(g1);
932 GEOSGeom_destroy(g1);
936 POSTGIS_DEBUGF(3,
"result: %s", GEOSGeomToWKT(g3));
938 GEOSSetSRID(g3, srid);
941 GEOSGeom_destroy(g3);
946 "convexhull() failed to convert GEOS geometry to LWGEOM");
958 result = geometry_serialize(lwout);
963 elog(ERROR,
"GEOS convexhull() threw an error (result postgis geometry formation)!");
967 PG_FREE_IF_COPY(geom1, 0);
968 PG_RETURN_POINTER(
result);
char result[OUT_DOUBLE_BUFFER_SIZE]
GBOX * gbox_copy(const GBOX *box)
Return a copy of the GBOX, based on dimensionality of flags.
int32_t gserialized_get_srid(const GSERIALIZED *g)
Extract the SRID from the serialized form (it is packed into three bytes so this is a handy function)...
int gserialized_get_gbox_p(const GSERIALIZED *g, GBOX *gbox)
Read the box from the GSERIALIZED or calculate it if necessary.
int gserialized_is_empty(const GSERIALIZED *g)
Check if a GSERIALIZED is empty without deserializing first.
int gserialized_has_z(const GSERIALIZED *g)
Check if a GSERIALIZED has a Z ordinate.
LWGEOM * GEOS2LWGEOM(const GEOSGeometry *geom, uint8_t want3d)
void lwgeom_geos_error(const char *fmt,...)
void lwgeom_free(LWGEOM *geom)
#define HANDLE_GEOS_ERROR(label)
GEOSGeometry * POSTGIS2GEOS(const GSERIALIZED *pglwgeom)