The model position is incorrect when load 3dtiles from local file in unreal

Cesium for Unreal
1

the same 3dtiles, and set the same latitude(36.1104222745),longitude(119.6523071842) and height(98.8219256536) position.

1028-3elems-2.zip (12.4 KB)

when add it to unreal by “blank 3dtileset” with local file by “with url“, it’s position shows not correct.

ScreenShot_2025-10-31_115344_536
ScreenShot_2025-10-31_115344_5361065×573 25.5 KB

ScreenShot_2025-10-31_115531_129
ScreenShot_2025-10-31_115531_1291164×644 124 KB

but add it to unreal by “from cesium ion“ (upload it to cesium ion),it shows correct position.

ScreenShot_2025-10-31_115812_705
ScreenShot_2025-10-31_115812_7051492×894 204 KB

also in cesium js,it shows correct.

please help me.:sweat_smile:

2

Hi @hashixuehua, welcome to the community!

I downloaded your zip file and noticed that the 3dtiles-json has the following asset:

  "asset": {
    "version": "1.1",
    "extras": {
      "ion": {
        "georeferenced": false,
        "movable": true
      }
    }
  },

Additionally, there are no transforms on your tiles, and the root bounding volume seems to be positioned near the center of the Earth. So this tileset does not appear to be georeferenced at all.

If you georeferenced this tileset in Cesium ion, you might want to try redownloading the again. Maybe the transform wasn’t baked into the tileset after you changed it?