← itdtllc.com

3D Hidden Line — 1989

A 3D wireframe renderer from 1989, running live in the browser in 2026. The original algorithm was hand-written from scratch in Turbo Pascal as a college senior project — months of work, before the public Web existed.

Thirty-five years later, the same engineer returned to that code with Claude Code as agentic AI collaborator. The AI faithfully translated all 3,800 lines into JavaScript — preserving the original functionality, look, and feel — and the two together rebuilt the demo and wrote the story behind it. Use the keyboard controls on the right to rotate, scale, and navigate the scene.  Read the full story →

Live Demo — click to focus, then use keyboard
Click the canvas, then press a key to interact.
Drag to rotate  ·  Pinch to scale

Controls

Mouse drag — rotate  ·  Scroll wheel — scale

Parameter screen

Default scene shows the hovertank with hidden-line removal. Press C to switch to object 1 (cube) or 2 (dodecahedron), or adjust perspective and other settings.