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StrandedKitty / streets-gl

🗺 OpenStreetMap 3D renderer powered by WebGL2
http://streets.gl
MIT License
632 stars 48 forks source link

retainning walls with adapted relief? #32

Open Matthias84 opened 1 year ago

Matthias84 commented 1 year ago

There are retaining walls, that realise a hard height shift in reality. Usually they hold / keep away ground from a higher level from a lower level. Would be nice to see this objects, but yes they affect your DEM as well.

rskedgell commented 1 year ago

Would it be worth considering this only where height= or est_height= is set? We have barrier=retaining_wall for everything between the surrounds of 1 metre high raised beds in accessible gardens to 10 metre high bridge and tunnel approaches on motorways.

StrandedKitty commented 1 year ago

I'm not sure it's possible to accurately render retaining walls. The terrain is just not detailed enough for this.

Matthias84 commented 1 year ago

Yeah and I guess enhancing the DTM is also limited by the internal representation? (raster vs. TIN). And AFAIK ist this topic also challenging for other devs e.g. O2W https://wiki.openstreetmap.org/wiki/OSM2World#Elevation_data @tordanik describes some nice approaches and tricks in his talks, but it's a real challenge to find generic solutions that don't cause to hard artifacts on other places https://media.ccc.de/search/?q=OSM2world