gserialized_is_empty()

int gserialized_is_empty

(

const GSERIALIZED *

g

)

Check if a GSERIALIZED is empty without deserializing first.

Only checks if the number of elements of the parent geometry is zero, will not catch collections of empty, eg: GEOMETRYCOLLECTION(POINT EMPTY)

Definition at line 152 of file gserialized.c.

{
        if (GFLAGS_GET_VERSION(g->gflags))
                return gserialized2_is_empty(g);
        else
                return gserialized1_is_empty(g);
}

References GSERIALIZED::gflags, GFLAGS_GET_VERSION, gserialized1_is_empty(), and gserialized2_is_empty().

Referenced by boundary(), buffer(), contains(), containsproperly(), convexhull(), coveredby(), covers(), crosses(), disjoint(), geography_bestsrid(), geography_centroid(), geography_distance(), geography_distance_tree(), geography_dwithin(), geography_segmentize(), hausdorffdistance(), hausdorffdistancedensify(), is_gserialized_from_datum_empty(), isring(), issimple(), isvalid(), LWGEOM_angle(), LWGEOM_isempty(), LWGEOM_snaptogrid(), LWGEOM_snaptogrid_pointoff(), overlaps(), pgis_union_geometry_array(), postgis_valid_typmod(), ST_DistanceRectTree(), ST_DistanceRectTreeCached(), ST_Equals(), ST_FrechetDistance(), ST_Intersects(), ST_MinimumBoundingCircle(), ST_MinimumBoundingRadius(), and touches().

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