GPT-6 Astra + @threejs is insane. We are way beyond static models. We are engineering living worlds in code now. There are no "3D model files" in this demo. Both trains are generated at runtime from Typescript/Three.js code using dimensions, profiles, and geometry functions. Wheel motion and explode/reassemble animations are also entirely code-driven. Runs super smooth inside the browser.
Learning
Two trains generated from three.js code that explode and reassemble
Tom Krcha, founder of pendev, had GPT-6 Astra write TypeScript that builds both locomotives at runtime from dimensions, profiles and geometry functions. No model files: wheel motion and the exploded views are all code, running smoothly in the browser.
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- Made with
- GPT-6 Astra, three.js, TypeScript
- Role
- Founder at pendev
- Posted








