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No.48 · Controls

Mood Slider

A rating you can feel: drag along the scale and the face above it changes continuously — brows lifting and settling, eyes narrowing into a grin, the mouth turning from a frown to an open smile, cheeks colouring, the face warming from grey-blue to sunshine. It tilts with your drag and blinks now and then.

The prompt

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

Build a feedback rating as a native <input type="range"> (0–100, labelled by the question, aria-valuetext = the nearest of Awful/Bad/Okay/Good/Great) with an SVG face above it that is drawn entirely from the value t = v/100. Face (viewBox 180×190): a head circle filled along a ramp grey-blue #9fb2cf → stone #c9c4b4 → sunshine #ffd46f → orange #ffb13d, with a soft highlight and a ground shadow that widens a little when happy. Mouth: a closed path of two quadratic curves between corners at y = 128 − (t − .5)·12 — the lower lip's control point at 128 + (t − .42)·72 (frown → smile), the upper lip's moving away from it as t passes 0.68 so the smile opens. Eyes: ellipses whose height falls from 9 to 2.2 as t goes past 0.72 (a grin squint) and nearly closes during a 130ms blink every 2.6–5.8s. Brows: rounded bars rotated ±(0.5 − t)·30° below the middle (inner ends lift when sad) and rising and relaxing above it, never knitting into a scowl. Cheeks: blush ellipses fading in above t 0.55. A tear under one eye below t 0.2. Motion: the face leans into the drag — slider velocity kicks a damped rotational spring (rAF only while it swings) — and the whole card's background follows its own mood ramp (cool → warm). Track: a gradient matching the face ramp, a thumb filled with the current face colour; tick labels under it with the current one bold. A "Send “Good”" button confirms. Themes: paper and night. Reduced motion: no tilt or blink.

Notes

Interaction
Drag the slider (or use arrow keys / Page keys) and watch the face; Send confirms.
Motion
Continuous geometry from the value; tilt spring (k 140, c 11); blink 130ms at random.
Accessibility
A native range input with a label and text values; the face is aria-hidden decoration.
Responsive
The card is at most 420px wide and fills narrower screens.
On touch
Native range drag on touch.

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