Hi Ticker, both MP are are clearly invalid. I think mkgmap can ignore them. The outer rings of an MP must not share a segment with another ring.
Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-boun...@lists.mkgmap.org.uk> im Auftrag von Ticker Berkin <rwb-mkg...@jagit.co.uk> Gesendet: Montag, 15. März 2021 13:08 An: Development list for mkgmap Betreff: Re: [mkgmap-dev] tile takes very long time to generate Hi Gerd Some possible test cases: Looking at the problems my code is detecting, the complicated cases are when possible polygons share 2 or more end-points with other possibles; for instance: http://www.openstreetmap.org/relation/5329106 adjacent buildings, touching each other, are mapped as a complete set of outers, using distinct ways. In general there is no easy way to resolve this. In the simple case of 2 buildings together, after all the simple ways have been joined, there are 4 ways between 2 points. Another case is: https://www.openstreetmap.org/relation/11093511 This is an outer area with an inner touching along part of the edge. This can be resolved by looking at the roles except that the shared edge uses the same way, which is repeated in the relation. Repeated ways are removed when the MP relation is created. Removing this de-dupe will probably causes other (invalid) relations not to be resolvable. The other class of problems I'm seeing is boundaries split across tiles. Ticker On Mon, 2021-03-15 at 09:10 +0000, Gerd Petermann wrote: > Hi Ticker, > > OK, so I'll try to find a way to test this code. In the JOSM code > there is a large collection of special cases which is used to test > the validator. See > https://josm.openstreetmap.de/browser/josm/trunk/nodist/data/multipol > ygon.osm > > I think about a similar file for mkgmap, I just have to find a good > way to make the current code testable. > > Gerd _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
