krathong
A free generative art piece — play it in your browser, no install. Krathong, Drawn — how a krathong is folded from banana leaf, why it floats upright, and where the Ping carries it. · กระทง วาดด้วยคณิต
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Open the live demo Source on GitHubFrom the README
The Loy Krathong float drawn with math: folding a banana-leaf petal, rings of petals, why it floats and stays upright, where the Ping carries it, and Bangkok's count the morning after. English and Thai.
docs/krathong.js — folding a leaf across straight lines in 3D, rings of petals, Archimedes and the metacentre, a river fast in the middle. docs/app.js — every drawing on the page. tools/copy_text.py — every word, both languages; tools/build.py writes the pages (--motdang for the motdang.net copy). research/facts.md — the sourced notes behind the page.
Text CC BY 4.0, code MIT.
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