A grid of three-dimensional cubes with negative heights renders in SVG via d3-3d’s `d3._3d()` shape pipeline, displaying numeric labels above each cube via `text` elements. The cubes are sorted using the 3D library’s `.sort` method, while face paths and labels are drawn using its provided drawing functions. An “update” button reinitializes randomly generated cube data, and a drag interaction rotates the entire scene by adjusting `.rotateX` and `.rotateY` angles, with transitions of 1000 ms for updates and instant redraw for drags.