Question on scene animation and rotating scanners

[han16nah]

I would like to implement a simulation of an animated scene using a rotating scanner, where the scene is updated as the scanner head rotates. How can I do this with BLAINDER? In my first attempts, each frame contained my entire scene. What I want is for the first frame to scan the leftmost part of the scene, the next frame to scan the next section to the right, and so on.