Ah When I scanned this area a while ago I guessed, without looking carefully or thinking, that mergeShapesFirst took all the shapes from all the ovm_ imgs and attempted to merge them. I see now that it doesn't. I don't know what problem it can solve better than the standard subdivision merge. It might have been there because, a long time ago, outer zoom subdivs (esp. overview) were far too small when there was anything (sea/coastline) because the content #points was calculated at res24.
So, yes, I'd try without. Ticker On Mon, 2021-05-24 at 14:19 +0000, Gerd Petermann wrote: > Oops, I meant > should I remove mergeShapesFirst() completely? > > Gerd > > ________________________________________ > Von: mkgmap-dev <mkgmap-dev-boun...@lists.mkgmap.org.uk> im Auftrag > von Gerd Petermann <gpetermann_muenc...@hotmail.com> > Gesendet: Montag, 24. Mai 2021 16:07 > An: Development list for mkgmap > Betreff: Re: [mkgmap-dev] Problems with sea in overview map > > Hi Ticker, > > you mean I should mergeShapesFirst() completely? > > Gerd > > ________________________________________ > Von: mkgmap-dev <mkgmap-dev-boun...@lists.mkgmap.org.uk> im Auftrag > von Ticker Berkin <rwb-mkg...@jagit.co.uk> > Gesendet: Montag, 24. Mai 2021 15:57 > An: Development list for mkgmap > Betreff: Re: [mkgmap-dev] Problems with sea in overview map > > Hi Gerd > > Not sure about this. It is a very drastic change and might break a > lot > of the element>subdiv code (esp --order-by). Many element well be too > big and have to be split again. > > It ends up as a merge attempt at all lines/shapes in the tile, so it > might as well be resolution independent! > > Ticker > On Mon, 2021-05-24 at 13:33 +0000, Gerd Petermann wrote: > > Hi Ticker, > > > > I think I found my mistake. The code to re-calc the preserved > > points > > was executed for each sub division instead of once per level. > > > > The attached patch might already solve this. > > > > Gerd > > _______________________________________________ > mkgmap-dev mailing list > mkgmap-dev@lists.mkgmap.org.uk > https://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev > _______________________________________________ > mkgmap-dev mailing list > mkgmap-dev@lists.mkgmap.org.uk > https://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev > _______________________________________________ > mkgmap-dev mailing list > mkgmap-dev@lists.mkgmap.org.uk > https://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk https://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
