[mkgmap-dev] [PATCH v1] Improved tagging of multipolygons

Sun Oct 31 16:36:50 GMT 2010

I got no feedback for this patch. Did anyone test it? If I don't get any 
negative feedback I will commit it tomorrow evening.

> The patch fixes the following tagging:
> polygon A: leisure=nature_reserve (the complete area)
> polygon B: natural=water (only the inner area)
> multipolygon relation: natural=wood and outer=polygon A and
> inner=polygon B (only the surrounding area)
> => See also thread
> http://www.mkgmap.org.uk/pipermail/mkgmap-dev/2010q3/009112.html
>
> The patch fixes also problems with cascaded multipolygons.
> MP1:
> outer P1 [natural=wood]
> inner P2 [natural=water]
>
> MP2:
> outer P2 [natural=water]
> inner P3 [natural=sand]
>
> Without this patch P2 was added twice to the map. Once with the complete
> polygon area and once with the cut out P3.
>
> I think this patch will also make it possible to remove the unlovely
> tag-removal-map used by the multipolygons. But first I have to check
> that in deep.
>
> Please test this patch carefully with some of your well known
> multipolygons! I would not be surprised by the patch containing some
> unwanted stuff...
>
> WanMil
>
>
>
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