[mkgmap-dev] [PATCH v1] - handle "anti-islands"

Tue Jan 26 12:50:14 GMT 2010

Does not work 100% for me yet, but in principle it seems to work.

--generate-sea=polygons,extend-sea-sectors,close-gaps=1000

Square tagged with
natural=coastline
a) direction of way: anticlockwise     == Correctly map is flooded, 
inside is dry
b) direction of way: clockwise           == Map neither flooded nor is 
background polygon drawn, map therefore behaves as if not --generate-sea 
would have been parsed. (hence need for another typfile).