Keep global coordinates for STL

[ThomasPe]

Is your feature request related to a problem? Please describe.
I'm trying to bring together meshes from terrain (Geotiff) and cities (CityJSON). To align them properly it would be great to have both meshes in their UTM coordinates which is currently not possible with cjio since everything gets calculated from 0/0 if I see it correctly.

Describe the solution you'd like
An option / parameter to skip the translate to minx,miny part.

[hugoledoux]

No, CityJSON files can use any CRS (that has en EPSG code). The 0/0 you mention is based on the "transformation" used to compress the data, see these: https://www.cityjson.org/specs/2.0.0/#referencesystem-crs + https://www.cityjson.org/specs/2.0.0/#transform-object

However, GeoTIFF is not a mesh but a raster format, which is not supported by CityJSON. You would need to convert the terrain to a TIN first, startinpy can help you with this partly and it exports to CityJSON directly.