Thanks for the feedback! One trivial bug in the patch was that a tile with no shoreline at all got a sea polygon as "background". This can be fixed by adding // don't do anything if there is no shoreline if (shoreline.size() == 0) return; at the begin of generateSeaPolygon(). Am just testing with germany to see wether there are other problems with cut-off shorelines and will post an improved patch this weekend. Best wishes Christian Clinton Gladstone schrieb:
On Sun, Aug 16, 2009 at 12:49 AM, Christian Gawron<christian.gawron@gmx.de> wrote:
With this version of the patch, the intersection of the bounding box and the landmass does not have to be simply connected as in version 3 of the patch.
Hm... I tried out this patch with a tiled map of Germany. The results were kind of amusing: pretty much all of Germany was flooded, with the exception of some areas around Lübeck. I suppose this is because I am using an extract (from Geofabrik) which cuts off coastline at the country border.
Creating automatic sea polygons which will work in practice appears to be a rather non-trivial problem.
Cheers and thanks for your work on this. _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev