Bending precomposed layers in 3d space?

[Mbaker]

If I’m understanding you correctly you aren’t actually bending the layers, just adjusting the position of the layers which is fairly simple. Just duplicate the layers and position them in 3d space by enabling “3d layers”. Apply masks to trim the layers. Hope I understood you correctly and this helps.

[Steve Roberts]

Without a plugin such as Zaxwerks 3D Warps, you can’t fold a layer. Even 3D Warps doesn’t do it sharply, in my experience.

So you need 3 layers: one for each (shorter) wall.

If you have a continuous movie (or something) on the long wall precomp, you can mask it to make a shorter wall, dupe the precomp twice, then move the mask on each of the dupes to show a different part of the wall. Then you position the walls where you want, lining them up.

BTW, sometimes 3D layers that meet at a corner look best in Alpha Add mode.