[Tile-serving] [openstreetmap/osm2pgsql] Ideas for improved geometry processing (Issue #1663)

[mboeringa]

@joto 

Interesting to read the German project description! I would caution you though, to carefully consider what is achievable in the project's funded limited time frame.

Adding "per-object" generalization capability, like the already implemented '**object.simplify()**' function, is a kind of no-brainer, but performing high quality generalization (like the one I showed on [my SOTM 2022 poster](https://files.osmfoundation.org/s/xDdDz3rpQX2C7FJ) for woodland features of OpenStreetMap), involving potentially thousands of OSM objects being merged into one "representative" object, is _far more complicated_, especially in the light of the project's aim to support updates as well. E.g. how to keep track of such numbers of ID's of source objects, and even be able automatically update the features in a reliable and performant matter, seems a potentially daunting task...

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