[mkgmap-dev] Problems with sea in overview map

Mon May 24 16:33:45 BST 2021

Hi Gerd

Not quite related, but if merging the shapes from all ovm_ imgs, then
maybe some types of filtering should be turned off when the contents
for these is being generated; esp DP, and probably straigh-line removal
in removeObsolete

Ticker

On Mon, 2021-05-24 at 15:21 +0000, Gerd Petermann wrote:
> Hi Ticker,
> 
> sorry, I can't follow. The old code only preserved points on the
> boundary of the merged shape, but the outer ring can be far from
> rectangular.
> This way some important points on outer ring were not preserved.
> 
> There's still a possible problem with large white area in sea which
> seems to depend on the order in which shapes are merged. Sill trying
> to understand what goes, but at least I can reproduce it...
> 
> Gerd
> 
> 
> ________________________________________
> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag
> von Ticker Berkin <rwb-mkgmap at jagit.co.uk>
> Gesendet: Montag, 24. Mai 2021 17:11
> An: Development list for mkgmap
> Betreff: Re: [mkgmap-dev] Problems with sea in overview map
> 
> Hi Gerd
> 
> Re. last commit: preserve all horizontal and vertical lines in
> shapes.
> 
> Do the cut lines go right across the outer polygon or just in from
> one
> side to the hole? If all the way across, might this change inhibit
> the
> merging to one side of the hole, or, if divided for some other reason
> in the other direction, merging across the now unneeded cut line.
> 
> Ticker
> 
> _______________________________________________
> mkgmap-dev mailing list
> mkgmap-dev at lists.mkgmap.org.uk
> https://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
> _______________________________________________
> mkgmap-dev mailing list
> mkgmap-dev at lists.mkgmap.org.uk
> https://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev