Am 07.01.2010 um 23:22 schrieb Johann Gail:

>> The "proper" solution would be to merge polygons if they overlap at the 
>> current resolution. Otherwise we might get "holes" in forests if they are 
>> mapped in small pieces. But I have no idea how to implement that...
>> 
> Which would be rather counterproductive to the PolygonSplitter code :-(
> The polygons gets split to not hit any limits.

Not necessarily. With merging the polygons I meant to merge *what you actually 
see* on the map. That is also what makes it so hard, because the polygons will 
have no common points or even a common border, it just happens that they will 
overlap when displayed at a certain resolution.

> Seems, we need a complete new concept in handling polygons and 
> multipolygons.

Maybe we need to rasterize the OSM polygons to a bitmap and then create the 
Garmin polygons from that? Would be lots of work though (programming and 
computing/memory wise)...

Regards
Thilo

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