Fourier Epicycles Visualizer

Decompose any drawn shape into rotating circles via DFT. The 3blue1brown classic, in your browser.

🌐 Try it live · 🌍 EN · 🌏 ZH

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Why

Decompose any drawn shape into rotating circles via DFT. The 3blue1brown classic, in your browser. Built as part of NovaSolver — 1600+ interactive physics & engineering simulators.

Tech

• Vanilla JavaScript — no build step, no framework lock-in
• Canvas / Chart.js rendering
• MathJax for equations
• Self-contained — drop index.html anywhere and it runs

Run locally

git clone https://github.com/novasolver/fourier-epicycles-visualizer
cd fourier-epicycles-visualizer
python -m http.server 8000
# open http://localhost:8000

Use it in your project

The index.html is self-contained and MIT-licensed. Take it, fork it, embed it.

Part of NovaSolver

This repo is a "flagship" version of one simulator from the physics-simulators monorepo. The monorepo has 1600+ more tools across:

• Structural mechanics (beam, buckling, fatigue, FEM)
• Fluid dynamics (Reynolds, Bernoulli, potential flow, CFD basics)
• Heat transfer (1D/2D conduction, fins, radiation)
• Electromagnetics (RC/RL, Bode, antennas, FDTD)
• Multi-physics & math fun (Lorenz, boids, Lissajous, n-body)

→ novasolver.jp/tools/ for the full catalog.

License

MIT