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Add a note about possible semantic change
git-svn-id: http://svn.osgeo.org/postgis/trunk@6432 b70326c6-7e19-0410-871a-916f4a2858ee
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@ -118,10 +118,12 @@ LANGUAGE 'plpgsql';
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-- AddEdge(atopology, line)
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--
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-- Add an edge primitive to a topology and get it's identifier.
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-- Edge endpoints will also be added as nodes.
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-- Edge endpoints will be added as nodes if missing.
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--
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-- An exception is raised if the given line crosses an existing
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-- node or interects with an existing edge on anything but endnodes.
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-- TODO: for symmetry with AddNode, it might be useful to return the
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-- id of an equal existing edge (currently raising an exception)
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--
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-- The newly added edge has "universe" face on both sides
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-- and links to itself.
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