Rehan Worlds on Instagram: "projection mapping to display a grid pattern on a bedroom wall. This technique is used by designers and 3D artists to create immersive and customizable interior spaces. Projection mapping uses projectors to turn surfaces like walls, ceilings, and furniture into dynamic, moving art instead of using traditional paint or wallpaper. The person in the image appears to be using a laptop to program or control the projected visuals, which in this case is a technical grid patt