[mkgmap-dev] Trouble getting somemultipolygons to render inmkgmap

Sat Sep 25 06:05:23 BST 2010

I have tried the patch and have looked around Australia and I can't find any
problems. Seems to be a good addition as some multipolygons I have never
seen now appear in mapsource.

Charlies missing multipolygons also now appear.

Regards,

Markus_g

-----Original Message-----
From: mkgmap-dev-bounces at lists.mkgmap.org.uk
[mailto:mkgmap-dev-bounces at lists.mkgmap.org.uk] On Behalf Of WanMil
Sent: Saturday, 25 September 2010 2:59 AM
To: Development list for mkgmap
Subject: Re: [mkgmap-dev] Trouble getting somemultipolygons to render
inmkgmap

> WanMil schrieb am 24.09.2010 17:35:
>> The mp code must check if the mp itself contains the
>> relevant polygon tags or if the tagging should be taken from the outer
>> ways. For this purpose a list of known polygon tags is used and up to
>> now leisure is not in this list.
>
> My understanding of the multipolygons is, that the tags may EITHER be in
the
> relation OR on the outer polygons. So the outerpoylgons are only to be
used,
> when there are no tags on the relation.
> If the relation itself is tagged and there is a tag on the outerpolygons,
this
> does logical mean, that the outerpolygon tags apply to the complete area
> including the inner-area.
>
> There shouldn't be a list of concerned tags, since any area tags may be
used.

I agree.
But the real world does not strictly follow this definition. 
Unfortunately very lots of mps are tagged with some non polygon tags and 
therefore I introduced the list of well known polygon tags. At least 
this was neccessary when I implemented the mp code.

You càn check yourself if it's now the time to remove this polygon list. 
I have attached a patch that follows your proposal. Just test it and let 
us know.

WanMil

>
> Gruss
> Torsten