Hard to be sure without pics, but
Amerigo made both trailers and truck campers with the "snap & nap" feature. They aren't pop-ups since they do not expand upwards.
The bunk ends expand outwards with the ends of the trailer becoming their roofs when in the camping position. Floorplan ends up being fairly similar to a popup with two elevated bunk ends and a central open area - better storage though since it doesn't collapse.