lwgeom_subdivide()

LWCOLLECTION* lwgeom_subdivide	(	const LWGEOM *	geom,
		int	maxvertices
	)

Definition at line 2054 of file lwgeom.c.

References COLLECTIONTYPE, lwcollection_construct_empty(), lwcollection_free(), lwerror(), lwgeom_get_bbox(), lwgeom_has_m(), lwgeom_has_z(), lwgeom_is_empty(), lwgeom_set_srid(), lwgeom_subdivide_recursive(), and LWGEOM::srid.

Referenced by ST_Subdivide(), and test_geos_subdivide().

{
        static int startdepth = 0;
        static int minmaxvertices = 8;
        LWCOLLECTION *col;
        GBOX clip;

        col = lwcollection_construct_empty(COLLECTIONTYPE, geom->srid, lwgeom_has_z(geom), lwgeom_has_m(geom));

        if ( lwgeom_is_empty(geom) )
                return col;

        if ( maxvertices < minmaxvertices )
        {
                lwcollection_free(col);
                lwerror("%s: cannot subdivide to fewer than %d vertices per output", __func__, minmaxvertices);
        }

        clip = *(lwgeom_get_bbox(geom));
        lwgeom_subdivide_recursive(geom, maxvertices, startdepth, col, &clip);
        lwgeom_set_srid((LWGEOM*)col, geom->srid);
        return col;
}

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