lwgeom_collect_endpoints()

static void lwgeom_collect_endpoints ( const LWGEOM *  lwg, LWMPOINT *  col  )

static

Definition at line 50 of file lwgeom_geos_node.c.

References LINETYPE, lwerror(), lwgeom_ngeoms(), lwgeom_subgeom(), lwline_get_lwpoint(), lwmpoint_add_lwpoint(), lwtype_name(), MULTILINETYPE, POINTARRAY::npoints, LWLINE::points, and LWGEOM::type.

Referenced by lwgeom_extract_endpoints().

{
        int i, n;
        LWLINE* l;

        switch (lwg->type)
        {
                case MULTILINETYPE:
                        for ( i = 0,
                                n = lwgeom_ngeoms(lwg);
                              i < n; ++i )
                        {
                                lwgeom_collect_endpoints(
                                        lwgeom_subgeom(lwg, i),
                                        col);
                        }
                        break;
                case LINETYPE:
                        l = (LWLINE*)lwg;
                        col = lwmpoint_add_lwpoint(col,
                                lwline_get_lwpoint(l, 0));
                        col = lwmpoint_add_lwpoint(col,
                                lwline_get_lwpoint(l, l->points->npoints-1));
                        break;
                default:
                        lwerror("lwgeom_collect_endpoints: invalid type %s",
                                lwtype_name(lwg->type));
                        break;
        }
}

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