PostGIS  2.3.7dev-r@@SVN_REVISION@@
Datum geography_from_geometry ( PG_FUNCTION_ARGS  )

Definition at line 588 of file geography_inout.c.

References geography_valid_type(), gserialized_get_type(), LW_TRUE, lwgeom_drop_bbox(), lwgeom_force_geodetic(), lwgeom_free(), lwgeom_from_gserialized(), lwgeom_nudge_geodetic(), lwgeom_set_geodetic(), LWGEOM::srid, and SRID_DEFAULT.

589 {
590  GSERIALIZED *geom = PG_GETARG_GSERIALIZED_P_COPY(0);
591  LWGEOM *lwgeom = NULL;
592  GSERIALIZED *g_ser = NULL;
593 
595 
596  lwgeom = lwgeom_from_gserialized(geom);
597 
598  /* Force default SRID */
599  if ( (int)lwgeom->srid <= 0 )
600  {
601  lwgeom->srid = SRID_DEFAULT;
602  }
603 
604  /* Error on any SRID != default */
605  srid_is_latlong(fcinfo, lwgeom->srid);
606 
607  /* Force the geometry to have valid geodetic coordinate range. */
608  lwgeom_nudge_geodetic(lwgeom);
609  if ( lwgeom_force_geodetic(lwgeom) == LW_TRUE )
610  {
611  ereport(NOTICE, (
612  errmsg_internal("Coordinate values were coerced into range [-180 -90, 180 90] for GEOGRAPHY" ))
613  );
614  }
615 
616  /* force recalculate of box by dropping */
617  lwgeom_drop_bbox(lwgeom);
618 
619  lwgeom_set_geodetic(lwgeom, true);
620  /* We are trusting geography_serialize will add a box if needed */
621  g_ser = geography_serialize(lwgeom);
622 
623 
624  lwgeom_free(lwgeom);
625 
626  PG_FREE_IF_COPY(geom, 0);
627  PG_RETURN_POINTER(g_ser);
628 }
uint32_t gserialized_get_type(const GSERIALIZED *s)
Extract the geometry type from the serialized form (it hides in the anonymous data area...
Definition: g_serialized.c:69
LWGEOM * lwgeom_from_gserialized(const GSERIALIZED *g)
Allocate a new LWGEOM from a GSERIALIZED.
void lwgeom_free(LWGEOM *geom)
Definition: lwgeom.c:1063
#define SRID_DEFAULT
Definition: liblwgeom.h:194
int lwgeom_nudge_geodetic(LWGEOM *geom)
Gently move coordinates of LWGEOM if they are close enough into geodetic range.
Definition: lwgeodetic.c:3002
void lwgeom_drop_bbox(LWGEOM *lwgeom)
Call this function to drop BBOX and SRID from LWGEOM.
Definition: lwgeom.c:599
int32_t srid
Definition: liblwgeom.h:398
#define LW_TRUE
Return types for functions with status returns.
Definition: liblwgeom.h:75
int lwgeom_force_geodetic(LWGEOM *geom)
Force coordinates of LWGEOM into geodetic range (-180, -90, 180, 90)
Definition: lwgeodetic.c:2820
void lwgeom_set_geodetic(LWGEOM *geom, int value)
Set the FLAGS geodetic bit on geometry an all sub-geometries and pointlists.
Definition: lwgeom.c:871
void geography_valid_type(uint8_t type)
The geography type only support POINT, LINESTRING, POLYGON, MULTI* variants of same, and GEOMETRYCOLLECTION.

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