Hi Nick, up to now the routine that creates the overview map doesn't add a 0x4b polygon, but normally, the tiles contain 0x4b polygons, and those are added. I think you are right that this can lead to problems if the combined tiles don't form a rectangle, so I should probably change the code so that the existing 0x4b polygons are ignored and a final new one is calculated. Gerd
Date: Tue, 28 May 2013 23:42:40 -0700 From: osm@pinns.co.uk To: mkgmap-dev@lists.mkgmap.org.uk Subject: Re: [mkgmap-dev] polygon type 0x4a
Hi Gerd
This might have nothing to do with the issue but I've been curious why all basemaps ( in the past) & now overview maps cause Mapsource & Basecamp to crash when the tdb lock byte is set. This interestingly does not happen when cgpsmapper is used to create the basemap . One of the differences seems to be that the latter includes a 0x4b polygon to define the outline.(+ Background=Y) Am I correct that the main outline / frame (4b polygon) is not defined as such but presumably calculated by Mapsource? This might lead to unwanted effects?
BW the overview maps work really well with reduced map windows.
.. Nick
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