lwcollection_construct()

LWCOLLECTION* lwcollection_construct	(	uint8_t	type,
		int	srid,
		GBOX *	bbox,
		uint32_t	ngeoms,
		LWGEOM **	geoms
	)

Definition at line 43 of file lwcollection.c.

{
        LWCOLLECTION *ret;
        int hasz, hasm;
#ifdef CHECK_LWGEOM_ZM
        char zm;
        uint32_t i;
#endif
 
        LWDEBUGF(2, "lwcollection_construct called with %d, %d, %p, %d, %p.", type, srid, bbox, ngeoms, geoms);
 
        if( ! lwtype_is_collection(type) )
                lwerror("Non-collection type specified in collection constructor!");
 
        hasz = 0;
        hasm = 0;
        if ( ngeoms > 0 )
        {
                hasz = FLAGS_GET_Z(geoms[0]->flags);
                hasm = FLAGS_GET_M(geoms[0]->flags);
#ifdef CHECK_LWGEOM_ZM
                zm = FLAGS_GET_ZM(geoms[0]->flags);
 
                LWDEBUGF(3, "lwcollection_construct type[0]=%d", geoms[0]->type);
 
                for (i=1; i<ngeoms; i++)
                {
                        LWDEBUGF(3, "lwcollection_construct type=[%d]=%d", i, geoms[i]->type);
 
                        if ( zm != FLAGS_GET_ZM(geoms[i]->flags) )
                                lwerror("lwcollection_construct: mixed dimension geometries: %d/%d", zm, FLAGS_GET_ZM(geoms[i]->flags));
                }
#endif
        }
 
 
        ret = lwalloc(sizeof(LWCOLLECTION));
        ret->type = type;
        ret->flags = gflags(hasz,hasm,0);
        FLAGS_SET_BBOX(ret->flags, bbox?1:0);
        ret->srid = srid;
        ret->ngeoms = ngeoms;
        ret->maxgeoms = ngeoms;
        ret->geoms = geoms;
        ret->bbox = bbox;
 
        return ret;
}

References LWCOLLECTION::bbox, LWCOLLECTION::flags, FLAGS_GET_M, FLAGS_GET_Z, FLAGS_GET_ZM, FLAGS_SET_BBOX, LWCOLLECTION::geoms, gflags(), lwalloc(), LWDEBUGF, lwerror(), lwtype_is_collection(), LWCOLLECTION::maxgeoms, LWCOLLECTION::ngeoms, LWCOLLECTION::srid, LWCOLLECTION::type, and ovdump::type.

Referenced by _lwt_AddLine(), _lwt_FaceByEdges(), BOX3D_to_LWGEOM(), combine_geometries(), GenerateLineStringGeometry(), GeneratePointGeometry(), GeneratePolygonGeometry(), GEOS2LWGEOM(), lwcollection_extract(), lwcollection_force_dims(), lwcollection_linearize(), lwcollection_locate_between_m(), lwcollection_segmentize2d(), lwcollection_split(), lwcollection_wrapx(), lwgeom_as_multi(), LWGEOM_collect(), LWGEOM_collect_garray(), LWGEOM_force_collection(), LWGEOM_line_substring(), lwgeom_make_valid(), lwline_locate_between_m(), lwline_split_by_line(), lwmcurve_linearize(), lwmline_measured_from_lwmline(), lwmline_unstroke(), lwmpolygon_unstroke(), lwmsurface_linearize(), lwpolygon_unstroke(), lwtin_from_geos(), RTreeFindLineSegments(), RTreeMergeMultiLines(), SFCGAL2LWGEOM(), wkt_parser_collection_new(), and wkt_parser_compound_new().

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