Make cylinder be oriented like a camera

CesiumJS
#1

I don’t know how to achive that effect. There is my attempt to do this.

sandcastle example

I want this red cylinder to have same orientation as camera.

When camera looks down to the globe surface cylinder should also point in the same direction.

#2

If you’re simply trying to visualize the camera frustum, you might find the 3D Tiles Inspector helpful for this: https://sandcastle.cesium.com/?src=3D%20Tiles%20Inspector.html

Select “+ Update” and then “Freeze frame”. This uses the DebugCameraPrimitive: https://cesium.com/docs/cesiumjs-ref-doc/DebugCameraPrimitive.html?classFilter=debug