Cesium 3d Model. Cesium ion integrations for authoring tools and visualization engines. If you have 3d models derived from a scan like photogrammetry or lidar see the photogrammetry guide.
Cesium supports 3d models including key frame animation skinning and individual node picking using gltf an emerging industry standard format for 3d models on the web by the khronos group the consortium behind webgl and collada. Introduce an intermediate coordinate system that re orients the model within your app needs a bit of math though. For developers use the open source cesiumjs library to create custom 3d mapping apps.
Curated global 3d terrain buildings and imagery cesiumjs cesiumjs.
This sounds like your model is not properly aligned with cesium s axes convention. Cesium ion allows you to tile large models like bim or cad to visualize them in a geospatial context and share on the web. Use cesium ion s simple workflow to create 3d maps of your geospatial data for visualization analysis and sharing. Re orient your model in the modelling software blender 3ds max etc.