Interior Box Mapping provides a node group setup for simulating interior rooms containing cubes on flat 2D planes. The material is compatible with both Eevee and Cycles render engines.

The provided blend file includes customizable node groups for defining the room and the interior cube. Users can duplicate the cube node group to introduce multiple shapes within the simulated space. Additionally, a virtual lights node group is included, which simulates ambient occlusion by applying a gradient over the textures.