07 · Volumetric 3D — Metric Cube

Theme 03 · 3D / volumetric · data: synthetic · reimagines nothing — genuinely novel (no component badge on the gallery, by design)

An orbitable, tiltable 2.5D Canvas height-field rendering a verification metric over a lead × threshold × region cube, with scrubbable slicing planes, a synced 2D slice panel, hover-to-raw-counts, and a 12-metric live switcher. The question it explores: does structure exist across the full cube that a stack of 2D plots hides?

Structure

apps/volumetric-3d/
  index.html         entry
  src/app.mjs        boot + UI
  src/cube.mjs       the metric cube + ratio-of-sums Cube.aggregate()
  src/met.mjs        metric derivation (validates the shared lib)
  src/surface3d.mjs  height-field renderer
  src/camera.mjs / interaction.mjs   orbit + slicing interaction
  data/cube.synthetic.json           committed cube

Status & notes

• 2,592 per-cell + 936 aggregation differential checks against original definitions (0 mismatches) during consolidation.
• For real data the cube’s region axis becomes the MODEL axis (the archive has one verification region but four models) — the blueprint’s recommended repurposing, first proposed by this app.
• Single-file build: dist/volumetric-3d.html (~405 KB).