How to achieve Camera Tilt Up/Down just like in the following link:
There seems to be a lot of features going on in that app. If you specifically want to know how to tilt the camera up down with code, check out my response here:
More generally, this camera tutorial might be helpful: https://cesiumjs.org/tutorials/Camera-Tutorial/
Let me know if that answers your question, or if you have any feedback. We’re always trying to improve our learning resources and materials!