You could create a primitive as shown in this code example: https://sandcastle.cesium.com/index.html?src=Parallels%20and%20Meridians.html. That’ll work regardless of what terrain provider is used.
You could create a primitive as shown in this code example: https://sandcastle.cesium.com/index.html?src=Parallels%20and%20Meridians.html. That’ll work regardless of what terrain provider is used.