-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Artem Pavlenko wrote: | On 8 Feb 2008, at 11:50, Frederik Ramm wrote: | |> Hi, |> |>> I found the way term 'Multipolygon' is used in OSM context is |>> confusing. |> True. What we had been looking for was a term for "polygons with |> holes"; it seemed unreasonable to create a relation "type=polygon" |> as plain polygons, without holes, don't require relations. But |> multipolygon is somewhat of a misnomer. |> |>> Shouldn't we be calling MultiPolygon Polygon? |> There are only 2788 in the database so it would not be too hard to |> change. I wanted to automatically add the "inner" and "outer" flags |> to the existing polygons anyway, although they're not strictly |> required they would make processing easier for some. | | I think having 'outer' and 'inner' flags/tags will help at the data | entry stage as well.
Can't we use clockwise / anticlockwise rules? The colour is on the right, therefore polygons run clockwise, holes run anti-clockwise, islands inside those holes run clockwise again. Under this model, the sea is a (normally blue coloured) polygon, and the land is a hole in the sea. AFAICT, this is how it is drawn by the renderers at the moment (the land colour is just the default rendering background colour). Robert (Jamie) Munro -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHtNyfz+aYVHdncI0RAvsnAKC4fQyaac8gy+kh/WJwa3Sz+uaTzACfcGxo F+S8U5wxjawtTxExwRyHVuI= =KVgU -----END PGP SIGNATURE----- _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/dev
