[mkgmap-dev] r4046: new algo for background (0x4b) in overview map

Sun Jan 14 18:12:46 GMT 2018

Hi Carlos,

if your map contains multiple tiles that form a rectangular shape
than the 0x4b polygons are combined again into one rectangle
by ShapeMerger.
Your map of spain looked different (empty area in part of portugal),
so in that map you should see a different 0x4b polygon.

Gerd
________________________________________
Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Carlos Dávila <cdavilam at orangecorreo.es>
Gesendet: Sonntag, 14. Januar 2018 18:45:09
An: mkgmap-dev at lists.mkgmap.org.uk
Betreff: Re: [mkgmap-dev] r4046: new algo for background (0x4b) in overview map

MapEdit shows a rectangular map coverage area polygon from r4056, see
attached screenshot. May be I'm doing something wrong.

El 14/01/18 a las 18:23, Gerd Petermann escribió:
> Hi all,
>
> thanks for testing. Size changes can be caused by block-size change, but also
> a non-rectangular shape requires a few more bytes.
> You can use GpsMapEdit to check this.
> I'll continue experimenting with non-rectangular 0x4a an d0x4b shapes during the next days.
>
> Gerd
>
> ________________________________________
> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Carlos Dávila <cdavilam at orangecorreo.es>
> Gesendet: Sonntag, 14. Januar 2018 17:57:42
> An: mkgmap-dev at lists.mkgmap.org.uk
> Betreff: Re: [mkgmap-dev] r4046: new algo for background (0x4b) in overview map
>
> I have tested single layer map and also OSM layer+contour (transparent)
> layer, and I don't see any difference in MapSource. Contour lines are
> cut with the same poly than OSM data. Only difference is that overview
> img is slightly larger with r4056 vs r4051 in my test map (Canary
> Islands), but I guess it's due to commit 4054.
>
> El 14/01/18 a las 12:54, Gerd Petermann escribió:
>> Hi Henning,
>>
>> I would expect differences when you combine a normal map with transparent tiles containing contour lines
>> and those tiles overlap the normal tiles.
>>
>> Gerd
>>
>> ________________________________________
>> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Henning Scholland <osm at hscholland.de>
>> Gesendet: Sonntag, 14. Januar 2018 12:52:04
>> An: mkgmap-dev at lists.mkgmap.org.uk
>> Betreff: Re: [mkgmap-dev] r4046: new algo for background (0x4b) in overview map
>>
>> With using --transparent I can't see any differences compared to older
>> mkgmap versions.
>>
>> Henning
>>
>