lwcollection_construct_empty()

LWCOLLECTION * lwcollection_construct_empty ( uint8_t  type, int32_t  srid, char  hasz, char  hasm  )

extern

Definition at line 92 of file lwcollection.c.

{
        LWCOLLECTION *ret;
        if( ! lwtype_is_collection(type) )
        {
                lwerror("Non-collection type specified in collection constructor!");
                return NULL;
        }
 
        ret = lwalloc(sizeof(LWCOLLECTION));
        ret->type = type;
        ret->flags = lwflags(hasz,hasm,0);
        ret->srid = srid;
        ret->ngeoms = 0;
        ret->maxgeoms = 1; /* Allocate room for sub-members, just in case. */
        ret->geoms = lwalloc(ret->maxgeoms * sizeof(LWGEOM*));
        ret->bbox = NULL;
 
        return ret;
}

References LWCOLLECTION::bbox, LWCOLLECTION::flags, LWCOLLECTION::geoms, lwalloc(), lwerror(), lwflags(), lwtype_is_collection(), LWCOLLECTION::maxgeoms, LWCOLLECTION::ngeoms, LWCOLLECTION::srid, and LWCOLLECTION::type.

Referenced by geography_centroid(), lw_dist2d_distanceline(), lw_dist2d_distancepoint(), lw_dist3d_distanceline(), lw_dist3d_distancepoint(), lwcollection_build_buffer(), lwcollection_chaikin(), lwcollection_clip_to_ordinate_range(), lwcollection_extract(), lwcollection_filterm(), lwcollection_force_dims(), lwcollection_from_twkb_state(), lwcollection_from_wkb_state(), lwcollection_homogenize(), lwcollection_offsetcurve(), lwcollection_set_effective_area(), lwcompound_construct_empty(), lwgeom_as_multi(), lwgeom_clip_to_ordinate_range(), lwgeom_construct_empty(), lwgeom_filter_m(), lwgeom_homogenize(), LWGEOM_locate_between_m(), lwgeom_node(), lwgeom_segmentize_sphere(), lwgeom_subdivide(), lwgeom_voronoi_diagram(), lwline_clip_to_ordinate_range(), lwmline_construct_empty(), lwmline_measured_from_lwmline(), lwmpoint_clip_to_ordinate_range(), lwmpoint_construct(), lwmpoint_construct_empty(), lwmpoly_construct_empty(), lwmultiline_from_twkb_state(), lwmultipoint_from_twkb_state(), lwmultipoly_from_twkb_state(), lwpoint_clip_to_ordinate_range(), lwpoly_clip_to_ordinate_range(), lwpoly_split_by_line(), lwtriangle_clip_to_ordinate_range(), mvt_iterate_clip_by_box_geos(), parse_geojson_geometrycollection(), parse_geojson_multilinestring(), parse_geojson_multipoint(), parse_geojson_multipolygon(), parse_gml_coll(), parse_gml_mcurve(), parse_gml_mline(), parse_gml_mpoint(), parse_gml_mpoly(), parse_gml_msurface(), parse_gml_psurface(), parse_gml_tin(), parse_kml_multi(), pta_unstroke(), rect_tree_to_lwgeom(), TWKBFromLWGEOMArray(), and wkt_parser_collection_finalize().

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