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>
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