Four channel-volume faders matching the patch (KICK/HAT/MEL/MIX),
in their own sub-panel with the same brushed-metal treatment as
.knobs and .seq.
- Track is a deep slot cut into the panel — heavy inset shadow,
thin highlight at the bottom edge for chamfer feel.
- Side ticks drawn with repeating-linear-gradient (1px on / 6px off).
- Cap uses the same metal language as the knob disc: brushed stripes
+ vertical light gradient + grip line in the middle + 4-edge bevel
via inset shadows + drop shadow underneath.
- Click anywhere on the track jumps the cap to that value, then
dragging continues. Pointer capture on the track itself so the cap
follows even outside the bounds.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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