Hey again community,
I have a question regarding cityGML buildings positioned wrong in the z-axis. I have created cityGML buildings, they are in LOD 2. When I upload them to Ion the are not clamped to terrain properly. I’m unsure if this problem is in cesium or if something gone wrong in the creation process via FME. When they are in kmz format they work properly and are clamped correct. But we need to work with cityGML. I have checked the terrains height in cesiumJS and it is correct.
I take one buildings location as example:
The terrain is 132 meters above sea lv.
But when I offset the building with min z they still float in the air, about 28 meters in the air.
The interesting thing is, that places the building in 160 meters above the sea lv, which I remember the terrain was before when I didn’t fuse it properly (did not assign ellipsoid on upload).
Another thing is that when I inspect the building via fme I can’t seem to find a single coordinate z value that is 160 meters above sea lv. The infobox of each building also displays TerrainHeight, which should be the height the building should be placed on.