[mkgmap-dev] The 0x4b background polygon in the overview map

Fri Jan 12 11:43:30 GMT 2018

Hi Henning,

I don't think that we should apply a bounding polygon only to the overview map.
If you compile tiles for whole Germany and produce a map for Bremen using
some of these tiles and an overview map that was created with a proper polygon
I would assume that this looks strange when you zoom in/out.

I don't understand what you mean with maximizing/minimizing the polygon.
Please explain.

Gerd

________________________________________
Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Henning Scholland <osm at hscholland.de>
Gesendet: Freitag, 12. Januar 2018 12:35:04
An: mkgmap-dev at lists.mkgmap.org.uk
Betreff: Re: [mkgmap-dev] The 0x4b background polygon in the overview map

Hi Gerd,

I think this would be best and additionally I would suggest to make the
polygon defined by user (as suggested in DEM-poly and precomp-sea
thread). As default I would limit overview map to the map tiles. Maybe
then we should name the parameter --overview-map-polygon=filename

I'm not sure, if the actual rectangle should be maximizing the polygon
and the map tile area minimizing it or if Garmin doesn't care at all
about it. If no external sea-data is given I would keep map tile area as
background polygon. Otherwise it will look strange.

Henning

On 12.01.2018 19:19, Gerd Petermann wrote:
> Hi all,
>
> up to now mkgmap always creates a rectangular 0x4b polygon for the overview map. I wonder
> if I should change that so that the 0x4b polygons of the sub tiles are used.
> This seems to be the better way if we start using non-rectangular 0x4b polygons?
>
> Gerd
> _______________________________________________
> mkgmap-dev mailing list
> mkgmap-dev at lists.mkgmap.org.uk
> http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
>

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