Support regarding 3D tiles and GLTF model

CesiumJS
1

I am new to Cesium. Can someone please help me by answering these questions?

  • How to implement LOD or HLOD on 3D tiles?

  • If we are loading GLTF directly then how to inspecting of individual mesh inside a GLTF model using cesium.js?

  • How to add custom features data in 3D tiles?

  • Is there and change in 3D mesh structure after converting into 3D tiles?

Thanks in Advance.

2

Welcome to the Cesium community @sandip! What kind of application are you working on?

If you upload your glTF model to Cesium ion it’ll be tiled into 3D Tiles, with levels of detailed created automatically. See: https://cesium.com/docs/tutorials/import-3d-models/. Cesium ion doesn’t currently supporting adding custom data to parts of the mesh for generic 3D models.

3

Thanks for quick reply.

We are working on IOT based Smart City application where I need to load whole city model with district, building, floor, room etc.

For loading 3D model on map we are looking for some framework and I found that Cesium can help here.

4

What software are you using to export the city model?

If you have it as CityGML or KML/COLLADA, you can upload that with per-feature properties, see https://cesium.com/docs/tutorials/import-3d-buildings/.