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