Creted this post, but maybe it’s too much: spatial-reference-from-esri-to-wgs84
I need to understand if there’s a workflow from ArcGIS CityEngine to Cesium 3DTiles?
I can tile glb on my server, and I can see my models in Ion, but I can’t place them correctly.
3D tiles uses WGS84, which is not an export option in CityEngine. If I import a layer in WGS84, CityEnigne want’s med to use another reference system:
ESPG:32632 would be the best solution.
I’ve tried to transform the location, but I haven’t been able to get the model in place.
So I need to understand the workflow, and if it’s possible at all.
Hi there,
I’m not too familiar with, nor do I know about any conversion tools from, ArcGIS CityEngine. Hopefully if someone is more experienced with it, they can chime in here.
If it helps, the 3D Tiles specification defines the coordinate reference system used:
A tileset’s global coordinate system will often be in a WGS 84 Earth-centered, Earth-fixed (ECEF) reference frame (EPSG 4978)
But, as is always the case with coordinate systems, that is certainly an oversimplification. 
Besides the projection, how are you exporting data from CityEngine? If you are able to export a single large model as glTF, OBJ, FBX, or DAE, you could then upload, geolocate, and tile in Cesium ion.
