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-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
--
-- PostGIS - Spatial Types for PostgreSQL
-- http://postgis.refractions.net
--
-- Copyright (C) 2011 Sandro Santilli <strk@keybit.net>
--
-- This is free software; you can redistribute and/or modify it under
-- the terms of the GNU General Public Licence. See the COPYING file.
--
-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
--
-- Functions used to polygonize topology edges
--
-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
--{
--
-- int Polygonize(toponame)
--
-- TODO: allow restricting polygonization to a bounding box
--
-- }{
CREATE OR REPLACE FUNCTION topology.polygonize(toponame varchar)
RETURNS text
AS
$$
DECLARE
sql text;
rec RECORD;
faces int;
BEGIN
sql := 'SELECT (st_dump(st_polygonize(geom))).geom from '
|| quote_ident(toponame) || '.edge_data';
faces = 0;
FOR rec in EXECUTE sql LOOP
BEGIN
PERFORM topology.AddFace(toponame, rec.geom);
faces = faces + 1;
EXCEPTION
WHEN OTHERS THEN
RAISE WARNING 'Error registering face % (%)', rec.geom, SQLERRM;
END;
END LOOP;
RETURN faces || ' faces registered';
END
$$
LANGUAGE 'plpgsql';
--} Polygonize(toponame)
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