fractal terrain
A free fractal demo — play it in your browser, no install. Fractal terrain generator with three.js visualization. Three algorithms (diamond-square, fBm, ridged).
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Controls: seed / ↻: reproducible terrains; ↻ rolls a random one
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Open the live demo Source on GitHubFrom the README
Then open . Any static server works.
Shareable links carry the scene state in the URL, e.g. ?algo=ridged&seed=42&land=0: ui=0 hides the overlays for embeds.
diamond-square: midpoint displacement on a 2⁸+1 = 257×257 grid: recursively set each midpoint to the average of its neighbors plus a shrinking random offset. This is the recursive-subdivision algorithm. fractal (fBm): value noise summed over octaves with halving amplitude and doubling frequency, plus a radial island falloff so the terrain rises out of the sea. This is the classic Terragen-style fractal landscape.
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