The amber arc was drawn at radius ~30px from center on a 56×56
canvas — the bottom of the arc (at angles near 6 o'clock) sat at
y ≈ 58 and got clipped by the canvas's own bounding box. Visible
as a flat cut-off at extreme positions.
Fix: bump the canvas to 72×72 and use fixed-pixel values for the
knob's geometry instead of fractions of `size`, so the visible knob
diameter stays at ~52px regardless of canvas size and there's now
~10px of margin all around for the arc and drop shadow.
- KNOB_SIZE: 56 → 72
- totalR: size * 0.46 → 26 (fixed)
- rimW: size * 0.045 → 2.5 (fixed)
- notch half-base: size * 0.026 → 1.5 (fixed)
- cy: size/2 + 1 → size/2 (no need for the offset on the larger canvas)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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>
Same metal treatment now applies to the outer hardware frame, the
top/bottom bars and the sub-panels (knobs + seq). Three CSS custom
properties capture the shared visual language so each frame just
plugs them in:
- --metal-specular: vertical gradient with a soft bright band on the
upper portion
- --metal-brush: very fine repeating horizontal stripes
- --metal-bevel: 4-edge inset shadow set (bright top + dark bottom +
highlighted left + dark right)
Per-element base colours retain a depth hierarchy: the outer
.hardware is the darkest, top/bottom bars sit slightly brighter, and
.knobs/.seq are the brightest plates so they read as mounted on top.
Drop shadows scaled to scope: .hardware gets a strong 0 8px 32px,
the bars get a small 0 2px 4px, and the sub-panels keep their two
layered drop shadows for depth.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Same lighting language as the knob disc, adapted for rectangular
panels (horizontal brushing instead of concentric).
Layered backgrounds:
- (1) horizontal specular band on the upper portion of the panel
- (2) very fine repeating horizontal stripes (brushed steel feel)
- (3) base vertical gradient (light from above on dark anodised metal)
Bevel via inset box-shadows: bright top edge + dark bottom edge +
faint side highlights/shadows. Drop shadow under each panel gives
visual depth so they read as separate plates mounted on the rack.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Previous version was too flat. Real metal needs concentric brushing
(not radial), a strong horizontal specular band, multiple light
sources and a defined bevel.
Disc rendering now layers:
- Radial base gradient (matte foundation, slightly dark at edge)
- Concentric brushing rings (lathe-turned aluminium, alternating
bright/dark with deterministic pseudo-random alpha)
- Vertical lighting overlay (light-from-above gradient)
- Horizontal specular band on the upper portion (light source reflection)
- Subtle rim light from below (typical of softbox-lit studio gear)
- Bright bevel crescent on the upper edge + dark crescent on the lower
- Inset shadow line where disc meets the dark rim
Indicator notch refined to read as engraved (dark groove + thin
bright lower lip catching light on the inner edge).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Reading the close-up: the knob is dominated by a big metallic chrome
disc that occupies most of its surface. The dark part is just a thin
outer rim. The indicator is a small dark notch on the disc that
rotates with the value (the disc itself stays vertically lit).
- Thin dark rim around the outside (~3px @ 56).
- Large metallic disc fills the inside (radial gradient, brushed-metal
striations from center outward, top crescent highlight).
- Indicator is a small dark triangular notch on the disc, base near
the center, tip toward the rim, rotated to the value angle.
- Amber arc kept outside everything as a value-progress meter.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Three changes following the reference more closely:
1. Knobs now have a metallic outer bezel (chrome ring): vertical
gradient running silver at the top → dark at the bottom, with a
thin highlight on the upper crescent. The dark dial sits inside
it with a slight inner shadow showing depth. Size bumped to 56px
so the bezel is visible.
2. Layout split into two stacks:
- left-stack: top-bar / screen / bottom-bar (vertical strip)
- right-stack: knobs / seq
3. Top bar: STOP+RUN as a tight pair (no gap), buttons stretch to
the bar's full height. Bottom bar matches the top bar visually
and shows a "● RUNNING_" label with the pulsing amber dot, no
longer inside the code area.
4. Code area is now *recessed* into the rack — no separate bordered
panel. Inset shadows + slightly darker background simulate a
cutout / screen window in the metal frame.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Aligning the mockup more closely with the reference image:
- Knob body is now a pure charcoal/black radial gradient (no warm
brown tint). Top-left specular dim, top crescent gloss, outer dark
ring. Drop shadow underneath so the knob "sits on" the panel.
- Value readouts ("120.0", "2.50", ...) in cream/white, no inset
amber LCD frame. Amber is reserved for arcs / LEDs / bullet labels
exclusively.
- Panel palette pulled toward neutral dark (less brown saturation).
- Sidebar with the description bullets removed; layout is just the
hardware unit at full width.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
A fourth aesthetic direction beyond the three knob variants — based
on the user's reference image (Moog/Roland/Korg vintage rack gear).
- Warm amber+charcoal palette (replaces the cyan phosphor accent).
- Beveled metal panels with corner screws (radial-gradient circles
with a slot mark).
- Knobs: brushed-metal radial gradient, knurled perimeter ridges,
specular highlight, white-warm engraved indicator, amber arc with
glow.
- LEDs for step cells: dim amber-off when inactive, full amber-on
with radial glow when active. Animated playhead outline at 8 Hz.
- Code "screen" with engraved-screen feel (inset shadow, faint amber
bloom). Status line "> RUNNING_" with blinking cursor.
- Engraved labels (small caps, double text-shadow for inset).
- Tabular numeric value displays in their own dark inset readouts
(LCD-style).
- Header buttons (STOP / RUN) with green run LED, pulsing red status.
Static mockup — no audio engine wired. Knobs are draggable to evaluate
the feel; step LEDs toggle on click. Decision pending: pick this or
one of A/B/C from knobs.html and align all surfaces to that language.
Standalone page at web/sandbox/knobs.html showing three aesthetic
directions side-by-side:
- A "hardware": radial gradient + perimeter ridges + specular highlight,
reads as a photographed knob.
- B "geometric": flat shapes, dot indicator at perimeter + short tick
from center; OP-1 / diagram register.
- C "phosphor": outline + heavy glow on accent arc and indicator;
synthwave / vacuum-tube feel.
Each variant shows 4 static knobs (0/33/66/100%) plus an interactive
draggable instance. DPR-aware canvas, vertical drag with shift-fine,
double-click to recenter. Pick one and the rest of the surfaces align.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Adds docs/roadmap.md outlining the 4-track plan (foundation, surface
aesthetics, organizable panel, theming) and ships the first track.
- Resizable splitter between editor and control surface (drag the seam,
double-click to reset). Width persists in localStorage.
- Custom scrollbars (WebKit pseudo-elements + Firefox scrollbar-color)
applied globally so CodeMirror's .cm-scroller, the right pane and the
piano roll all match the dark theme.
- Header separators between transport / gain / info groups.
- Smooth transitions on buttons, range thumbs and surface borders.
- :focus-visible rings using accent-glow color token.
- Pulse animation on the live status dot.
- New design-system tokens for layout (--right-w, --splitter-w),
timing (--t-fast/base/slow), and panel hierarchy (--panel-hi,
--gutter-hi, --divider, --fg-mute, --accent-glow).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Patch language with osc/noise/trig/seq/adsr/filter/delay/poly + voice templates
and inline live values. Two runtimes:
- code_sinth/ — Python engine (numpy + sounddevice). Hot-reload via mtime
watcher. Offline render to WAV. Static-HTTP+WS visualizer (viz/) that
injects waveforms next to each `node X = ...` line.
- web/ — port of the engine to JS running in AudioWorklet. Single static
page with CodeMirror 6 editor (line widgets for live waveforms) and a
control surface on the right with knobs/faders/step_seq/piano_roll
declared from the patch. State preserved across hot-reload.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
