Fake "window" object that funtions like the Portal

Like the portal you place down a position point for it to look at, but it doesn’t teleport you and doesn’t rotate, sort of like a camera attached to a media player but it’s one object and is much less noticeable.

Can be used for more abstract building or cases where it’s just easier to have a room disconnected from the current one, you can place it behind a door to give the illusion of two rooms being connected, or outside a window to show a different landscape from where you currently are.

So a frame-less version of the transdimensional painting?

frame-less, but also you can re-size how much of the other side it shows instead of being limited to a small square.