{
"$schema": "https://ui.shadcn.com/schema/registry-item.json",
"name": "flywheel",
"type": "registry:ui",
"title": "Flywheel",
"description": "Four machined CSS spinners — ring, dots-orbit, segmented, dual-ring — selected by variant. Conic-gradient comet head cooling to a blue-silver tail over a recessed groove; currentColor-driven, zero dependencies, lit resting frame under reduced motion.",
"dependencies": [],
"registryDependencies": [],
"files": [
{
"path": "registry/default/loaders/flywheel/flywheel.tsx",
"type": "registry:ui",
"target": "components/crucible/flywheel.tsx",
"content": "import * as React from \"react\";\n\nimport { cn } from \"@/lib/utils\";\n\nexport interface FlywheelProps extends React.ComponentPropsWithoutRef<\"div\"> {\n /**\n * Which spinner to render.\n * - `ring` (default): a machined groove with a white-hot comet head that\n * cools to a blue-silver tail, spun with heavy inertia and a faint\n * flicker at speed — the Crucible signature.\n * - `dots-orbit`: a comet of beads orbiting, each breathing on a sine so\n * the ring has life even at rest.\n * - `segmented`: a spoked wheel of alternating solid/gap segments with a\n * hot leading spoke.\n * - `dual-ring`: two filament heads counter-rotating at different rates.\n * @default \"ring\"\n */\n variant?: \"ring\" | \"dots-orbit\" | \"segmented\" | \"dual-ring\";\n /** Overall size in px. @default 40 */\n size?: number;\n /** Rotation speed multiplier. 1 = default, 2 = twice as fast. @default 1 */\n speed?: number;\n /** Accessible label announced to screen readers. @default \"Loading\" */\n label?: string;\n /** Accent color for the hot head / active ring. @default \"#ffffff\" */\n accentColor?: string;\n}\n\n// Grain tile — a tiny fractal-noise SVG, tiled at low opacity over the whole\n// widget to kill gradient banding and give the glow a shader-grade texture.\n// Built once at module scope (pure string ops — SSR-safe, deterministic).\nconst GRAIN_SVG =\n \"\";\nconst GRAIN_URI = `url(\"data:image/svg+xml,${encodeURIComponent(GRAIN_SVG)}\")`;\n\nconst KEYFRAMES = `\n@property --fw-spin {\n syntax: '';\n inherits: false;\n initial-value: 0deg;\n}\n@keyframes crucible-flywheel-spin { to { transform: rotate(360deg); } }\n@keyframes crucible-flywheel-spin-reverse { to { transform: rotate(-360deg); } }\n@keyframes crucible-flywheel-flicker {\n 0%, 21%, 23%, 46%, 48%, 100% { opacity: 1; }\n 22%, 47% { opacity: 0.62; }\n}\n/* A sine-ish breath: dots swell and dim, never fully off — idle life. */\n@keyframes crucible-flywheel-dot {\n 0%, 100% { opacity: 0.18; transform: scale(0.7); }\n 50% { opacity: 1; transform: scale(1.15); }\n}\n/* The head bloom breathes slightly so the tip flares, not just glows flat. */\n@keyframes crucible-flywheel-bloom {\n 0%, 100% { opacity: 0.85; transform: translate(-50%, -50%) scale(1); }\n 50% { opacity: 1; transform: translate(-50%, -50%) scale(1.18); }\n}\n[data-crucible=\"flywheel\"] .fw-rotor,\n[data-crucible=\"flywheel\"] .fw-dot { will-change: transform; }\n@media (prefers-reduced-motion: reduce) {\n /* Pin an explicit, legible resting pose — a lit comet, never a blank box\n and never frozen mid-blur. All animated props are committed here. */\n [data-crucible=\"flywheel\"] .fw-rotor {\n animation: none !important;\n transform: rotate(-42deg) !important;\n }\n [data-crucible=\"flywheel\"] .fw-rotor-slow {\n transform: rotate(38deg) !important;\n }\n [data-crucible=\"flywheel\"] .fw-spin-inner { animation: none !important; }\n [data-crucible=\"flywheel\"] .fw-stroke,\n [data-crucible=\"flywheel\"] .fw-head { animation: none !important; opacity: 1 !important; }\n [data-crucible=\"flywheel\"] .fw-bloom {\n animation: none !important;\n opacity: 0.9 !important;\n transform: translate(-50%, -50%) scale(1) !important;\n }\n [data-crucible=\"flywheel\"] .fw-dot {\n animation: none !important;\n opacity: 0.85 !important;\n transform: scale(1) !important;\n }\n}\n`;\n\nconst DOT_COUNT = 8;\n\n// Shared machined groove behind a rotating stroke: a recessed channel with an\n// inner shadow, a dark outer rim and a soft top rim-light so it reads as cut\n// metal, not a CSS border.\nfunction Groove({ thickness = \"var(--fw-thick)\", inset = \"0\" }: { thickness?: string; inset?: string }) {\n return (\n <>\n \n \n \n );\n}\n\n// The comet head: a blurred bloom flaring behind a sharp white-hot core, both\n// pinned to the top-centre point of the ring where the conic head sits.\nfunction Head({ bloom = true }: { bloom?: boolean }) {\n return (\n <>\n {bloom && (\n \n )}\n \n \n );\n}\n\n// Conic hot filament, masked to the ring band. Head at 12 o'clock (0deg),\n// cooling backward into a blue-silver tail that fades to nothing.\nconst cometConic = `conic-gradient(from 0deg,\n var(--fw-accent) 0%,\n color-mix(in oklab, var(--fw-hot) 55%, transparent) 2.5%,\n transparent 6%,\n transparent 58%,\n color-mix(in oklab, var(--fw-trace) 45%, transparent) 70%,\n var(--fw-cool) 86%,\n var(--fw-hot) 96%,\n var(--fw-accent) 100%\n)`;\n\nconst ringMask = (t: string) =>\n `radial-gradient(farthest-side, transparent calc(100% - ${t}), #000 calc(100% - ${t}))`;\n\nfunction RingVariant() {\n return (\n <>\n \n \n \n \n \n \n );\n}\n\nfunction DotsOrbitVariant() {\n return (\n \n {Array.from({ length: DOT_COUNT }, (_, i) => {\n const angle = (360 / DOT_COUNT) * i;\n // Head-most bead runs hottest; brightness cools around the ring so the\n // orbit reads as a comet of beads, not a uniform necklace.\n const headness = Math.round(100 - (i / DOT_COUNT) * 82);\n const dotColor = `color-mix(in oklab, var(--fw-accent) ${headness}%, var(--fw-cool))`;\n return (\n // Position (rotate + radial offset) lives on this static wrapper so\n // it never collides with the breath's own `transform: scale(...)`.\n \n 60 ? 6 : 3}px ${headness > 60 ? 1 : 0}px color-mix(in oklab, ${dotColor} ${Math.round(headness * 0.6)}%, transparent)`,\n animation: \"crucible-flywheel-dot calc(var(--fw-dur) * 1.15) ease-in-out infinite\",\n animationDelay: `calc(var(--fw-dur) * 1.15 / ${DOT_COUNT} * ${i} * -1)`,\n }}\n />\n \n );\n })}\n \n );\n}\n\nfunction SegmentedVariant() {\n // Spoked wheel: a hot leading spoke, cool blue-silver teeth behind it.\n const spokes = `conic-gradient(from 0deg,\n var(--fw-accent) 0deg 22deg, transparent 22deg 45deg,\n color-mix(in oklab, var(--fw-cool) 92%, var(--fw-hot)) 45deg 67deg, transparent 67deg 90deg,\n color-mix(in oklab, var(--fw-cool) 78%, transparent) 90deg 112deg, transparent 112deg 135deg,\n color-mix(in oklab, var(--fw-cool) 62%, transparent) 135deg 157deg, transparent 157deg 180deg,\n color-mix(in oklab, var(--fw-cool) 50%, transparent) 180deg 202deg, transparent 202deg 225deg,\n color-mix(in oklab, var(--fw-cool) 40%, transparent) 225deg 247deg, transparent 247deg 270deg,\n color-mix(in oklab, var(--fw-cool) 32%, transparent) 270deg 292deg, transparent 292deg 315deg,\n color-mix(in oklab, var(--fw-cool) 24%, transparent) 315deg 337deg, transparent 337deg 360deg\n )`;\n return (\n <>\n \n \n \n \n \n \n );\n}\n\nfunction DualRingVariant() {\n const conicHalf = (lead: string, trail: string) => `conic-gradient(from 0deg,\n var(--fw-accent) 0%,\n transparent 5%,\n transparent 44%,\n ${lead} 50%,\n transparent 55%,\n transparent 90%,\n ${trail} 100%\n )`;\n return (\n <>\n \n \n \n \n \n
\n \n \n \n
\n \n \n );\n}\n\n/**\n * Flywheel — four machined CSS spinner variants selected by `variant`.\n * The track groove is currentColor-driven (wrap in a `text-*` class to\n * recolor it); the white-hot comet head is independently themeable via\n * `accentColor` and cools into a blue-silver tail. Zero dependencies,\n * SSR-safe, GPU-light.\n *\n * Crucible signature (`variant=\"ring\"`, the default): a recessed groove with\n * a conic-gradient filament — a white-hot head blooming at the tip, cooling\n * back through silver to a faint slate trace — spun with heavy inertia and a\n * flicker at speed, over a low-opacity grain that kills banding. Under\n * reduced motion every variant pins a lit resting frame — no spin, never\n * blank.\n */\nexport function Flywheel({\n variant = \"ring\",\n size = 40,\n speed = 1,\n label = \"Loading\",\n accentColor = \"#ffffff\",\n className,\n style,\n ...props\n}: FlywheelProps) {\n const duration = `${1.1 / Math.max(speed, 0.01)}s`;\n\n return (\n \n \n {variant === \"ring\" && }\n {variant === \"dots-orbit\" && }\n {variant === \"segmented\" && }\n {variant === \"dual-ring\" && }\n {/* Grain overlay — tiled fractal noise at very low opacity to kill the\n banding in the conic tail and match a shader look. */}\n \n {label}\n \n );\n}\n"
}
]
}