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-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
--
-- PostGIS - Spatial Types for PostgreSQL
-- http://postgis.net
--
-- Copyright (C) 2011 Andrea Peri <aperi2007@gmail.com>
--
-- This is free software; you can redistribute and/or modify it under
-- the terms of the GNU General Public Licence. See the COPYING file.
--
-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
--{
--
-- Andrea Peri (27 Feb 2011) creation
--
-- GetFaceByPoint(atopology, point, tol)
--
-- Retrieve a Face ID given a POINT and a tolerance
-- tolerance = 0 mean exactly intersection
--
-- Returns return the integer ID if there is a face on the Point.
--
-- When the Point is even a Node it raise an exception.
-- This case is testable with the GetNodeByPoint(atopology, apoint, tol)
--
-- If there isn't any face in the Point, GetFaceByPoint return 0.
--
-- if near the point there are two or more faces it throw an exception.
--
CREATE OR REPLACE FUNCTION topology.GetFaceByPoint(atopology varchar, apoint geometry, tol1 float8)
RETURNS int AS
'MODULE_PATHNAME', 'GetFaceByPoint'
LANGUAGE 'c' STABLE STRICT;
--} GetFaceByPoint
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