web

cellauto · web demo

A single-page in-browser live Gray–Scott reaction–diffusion explorer — ported from Stage 1 of the cellauto abiogenesis sandbox. Loads in ~150 KB (HTML + CSS + a few hundred lines of vanilla JS; Google Fonts streamed externally). No Python, no Pyodide, no build step.

Run

Just open index.html in a browser, or deploy to GitHub Pages from docs/web/:

1. Repo Settings → Pages: set the source to deploy from a branch, branch main, folder /docs.
2. The demo lives at https://<user>.github.io/<repo>/web/.
3. The empty docs/.nojekyll ensures Pages serves files starting with _ unmodified (insurance — we don't actually have any here).

What it shows

The headline result of cellauto's Stage 1: the Gray–Scott PDE

∂u/∂t = Du ∇²u − uv² + F(1 − u)
∂v/∂t = Dv ∇²v + uv² − (F + k)v

manufactures emergent self-replicating spots from a featureless initial state — the core argument the full simulator builds around. The five Pearson (1993) regimes — spots, stripes, mitosis, waves, labyrinth — are one combobox click away.

What it doesn't

The other eleven origin-of-life rules in the desktop build (soup, alkaline vents, autocatalytic sets, mineral catalysis, RAFs, homochirality, RNA world, genetic code, coacervates, vesicles, protocell selection, LUCA distillation) are not ported — they would be a JS rewrite of about 4,000 lines of Python apiece. Instead, the page exhibits a static museum-plate gallery of each one rendered by the desktop build (docs/generated/*.png). For everything past Stage 1, install the Python build:

pip install -e .
cellauto gui --rule abiogenesis-pipeline-extended

Files

• index.html — semantic structure, ~115 lines.
• styles.css — Catalytic Silence palette + typography.
• sim.js — Gray–Scott PDE port + RAF loop + UI wiring.
• viridis.js — 64-entry viridis lookup table.
• presets.js — the five Pearson (F, k) pairs.
• assets/ — none on disk (gallery images are loaded from ../generated/).