This example visualizes a grid of colorful cubes whose heights represent random negative values, rendered as an interactive 3D bar chart. Users can drag to rotate the entire scene, which triggers smooth transitions as the cube faces and numeric text labels update. The visualization uses the d3-3d plugin with d3.v4 to project cube vertices, while SVG paths and text elements render each face and height value. A button triggers regeneration of the data, and drag events control rotation angles through d3.drag.