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No.26 · Buttons

Ripple Rim Button

A nudge you can see go out: pressing sends a wave from the spot you touched running both ways round the button's rim, fading as it travels.

The prompt

The design brief behind this component — reuse it to regenerate, remix, or explain it.

Build a 'Nudge Hamza' button whose outline is an SVG path of a pill, sampled every ~3px from the measured size, with an outward normal at each sample. At rest it's a face with a 1.5px frost rim. On press, find the rim sample nearest the pointer (from the keyboard, use the top centre) and run a wave from it both ways round the rim: each frame, displace every sample along its normal by amp · gaussian((distance round the rim − front) / width) · cos(phase), where the front moves at the rim's length per 0.9s and amp decays from 5.5px with a 0.42s time constant. After 1.4s it settles back to the plain outline. At the same time the label becomes '✓ Nudged' in green and the rim turns green for 2.4s, announced politely. Reduced motion skips the wave but keeps the confirmation.

Notes

Interaction
Press to nudge; a wave runs round the rim from where you pressed.
Motion
Wave travels round the rim in 0.9s with exponential decay; done state holds 2.4s.
Accessibility
A real button; the label change is in an aria-live region. Keyboard presses start the wave from the top. Reduced motion removes the wave.
Responsive
The rim is resampled from the measured size, so any label fits.

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301 components