A LITTLE MOTION, A LONG LINE
Two quiet swings. One wandering pen.Tune a rhythm and make something only you could make.
A first line, ready to set in motion.
02 / BORROW A RHYTHM
A starting point, never a final answer.
03 / YOUR LOCAL COLLECTION
Three compositions, remembered only in this browser. Select one to revisit it.
THE SMALL GUIDE
The pen moves sideways with one swing and up and down with another. Their paths join into a Lissajous figure. Settling gently shrinks the swings; drift slowly changes the loops.
Try this: choose Silk bow, turn the starting offset from 0° to 90°, then add a little settling. Watch a simple line become a nest.
Draw again animates the composition. Pause and Step let you follow the nib. Finish trace completes it immediately. Clear lifts all the ink. Changing a setting draws a fresh full preview.
Keep composition stores just its settings in one of three local slots. A fourth replaces the oldest. No files, accounts or printing required.
Space pause/resume · R draw again · S keep composition. Native sliders and menus work with arrow keys.
NOTES & SOURCES
Original MIT interactive app. No upstream code or artwork copied. Mathematical concept reference: evoluteur/harmonograph-maker (MIT; 3 stars observed November 13, 2026; maintained October 10, 2026).
Inspired by recent work on Lissajous MEMS laser scanning, Applied Optics, November 3, 2026 (DOI 10.1364/AO.613445). This is a drawing toy, not an optical or physical simulator.
The ivory paper and brass nib were created with a GPT image model and are bundled locally. Your three saved compositions stay in this browser.
Readable code, full license, repository reference and research links are included in SOURCES.txt and metadata.json.
