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fix(vu): drop conic-gradient mask, draw lines explicitly in 0-90 range

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The mask + repeating-conic-gradient combo was rendering the visible
arc shifted to the right (mask appeared centred on 12-3 o'clock
instead of 10:30-1:30). Cause unclear — likely a browser quirk
around `from -45deg` interaction between the two conic-gradients.

Replaced with a single non-repeating conic-gradient using `from 315deg`
(the positive equivalent of -45deg). Lines are drawn explicitly at
every 9° from 0° to 90° in the gradient (-45° to +45° in standard
orientation) — 11 lines total, with the centre line (at 0°) slightly
brighter so it reads as the meter's "0 VU" mark. Outside the 90°
active wedge the gradient is transparent, so no mask is needed.

Result: the leftmost gridline now sits exactly where the needle rests
at -45°, like a real VU meter at silence.
This commit is contained in:
Admin
2026-04-25 02:44:57 +03:00
parent 3de2b4496e
commit 9b84fdd0e5
1 changed files with 27 additions and 14 deletions
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media_server/static/css/styles.css
+27 -14
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@@ -7056,20 +7056,33 @@ body.audio-spectrum-live .now-playing .spectrum span {
content: "";
position: absolute;
inset: 0;
/* Grid lines every 9°, only inside the -45..+45 needle swing
so the leftmost line aligns with the rest position (proper zero). */
background: repeating-conic-gradient(from -45deg at 50% 100%,
rgba(242, 235, 220, 0.10) 0deg 0.6deg,
transparent 0.6deg 9deg);
/* Clip mask: only show the 90° active arc. */
-webkit-mask-image: conic-gradient(from -45deg at 50% 100%,
black 0deg,
black 90deg,
transparent 90deg 360deg);
mask-image: conic-gradient(from -45deg at 50% 100%,
black 0deg,
black 90deg,
transparent 90deg 360deg);
/* 11 grid lines (every 9°) drawn ONLY in the needle's -45°..+45°
swing range. No mask — the conic-gradient is explicitly transparent
outside the 90° active wedge so the leftmost line aligns with the
needle's rest position (proper zero). */
background: conic-gradient(from 315deg at 50% 100%,
rgba(242, 235, 220, 0.18) 0deg 0.5deg,
transparent 0.5deg 9deg,
rgba(242, 235, 220, 0.18) 9deg 9.5deg,
transparent 9.5deg 18deg,
rgba(242, 235, 220, 0.18) 18deg 18.5deg,
transparent 18.5deg 27deg,
rgba(242, 235, 220, 0.18) 27deg 27.5deg,
transparent 27.5deg 36deg,
rgba(242, 235, 220, 0.18) 36deg 36.5deg,
transparent 36.5deg 45deg,
rgba(242, 235, 220, 0.25) 45deg 45.5deg, /* slightly brighter centre line at 0 */
transparent 45.5deg 54deg,
rgba(242, 235, 220, 0.18) 54deg 54.5deg,
transparent 54.5deg 63deg,
rgba(242, 235, 220, 0.18) 63deg 63.5deg,
transparent 63.5deg 72deg,
rgba(242, 235, 220, 0.18) 72deg 72.5deg,
transparent 72.5deg 81deg,
rgba(242, 235, 220, 0.18) 81deg 81.5deg,
transparent 81.5deg 90deg,
rgba(242, 235, 220, 0.18) 90deg 90.5deg,
transparent 90.5deg 360deg);
}
.now-playing .vu-meter::after {
content: "VU";