How to get the geometric data of model?

When I import a enity to viewer.entities, and the enity.model is a Cesium.ModelGraphics from gltf model. Then , how to get the geometric datas of model? Like: height of model, size of model , vertex , material…

And why the Cesium.ModelGraphics does not have the material property?

Hi @519646741

The ModelGraphics class is used to import complete 3D models. Currently, the data from the model is not available through the public API. If you want to create a custom 3D model with its own material, I suggest using the Primitive API.