"use client"; /** * BrandBridge, from https://motion-brew.com/components/brand-bridge * * One self contained file: the component and the cn() * helper. Needs React 18 or 19 and Tailwind CSS v4. */ import * as React from "react"; import { type ClassValue, clsx } from "clsx"; import { AnimatePresence, motion, useInView, useReducedMotion } from "motion/react"; import { twMerge } from "tailwind-merge"; // cn(): merges Tailwind classes, later ones win. /** Merge Tailwind classes, letting later classes win conflicts. */ function cn(...inputs: ClassValue[]): string { return twMerge(clsx(inputs)); } // BrandBridge /** * BrandBridge * * Trigger: press and hover (plus in view). A feature card for any site or * app: on top, brand tiles stand in two columns either side of a hub, and only * the connected ones are wired in. On its own it wires the brands in one at * a time in a random order and then stays connected; it pauses while hovered * and hands over for good once a tile is pressed. Each wire is a gradient in its brand's own * colours, fading into ink at the hub, and a glowing comet of the same * gradient runs along it now and then; when it lands, the hub's rotating * colour ring pulses and a few sparks of that brand fly off. Press a tile to * connect it: the wire draws itself in, a burst of brand coloured particles * streams to the hub and the logo turns from gray to colour. Press again to * disconnect and the wire pulls back. Hovering a tile lifts it and previews or * brightens its wire. The wires are magnetic: bring the pointer near one and * it bends toward it on a spring, lights up and carries its comet along the * bend, then snaps back with a small wobble when the pointer leaves. Behind the graphic a sparse field of particles drifts, * slowly circles the hub and scatters from the pointer. Under it sit a * centred heading and line. Everything pauses off screen. Reduced motion * keeps the wires and particles still. * * Engine: motion/react (entrances and pathLength wires) * with one requestAnimationFrame loop that drives the comets on SVG dash * offsets and the particles on a 2D canvas. */ export interface BridgeBrand { id: string; name: string; /** The wire's gradient, from the tile toward the hub. The first is the brand's main colour. */ colors: string[]; /** The mark inside the tile, about 28px. */ logo: React.ReactNode; } export interface BrandBridgeProps { /** Up to eight brands; the first half stand on the left. Default six. */ brands?: BridgeBrand[]; /** Ids connected at first. Default none, so autoplay builds them up. */ defaultConnected?: string[]; /** * Connect the brands by itself, one at a time in a random order, and stay * connected. Plays again on reload or remount; pauses while the card is * hovered and stops for good once a tile is pressed. Default `true`. */ autoplay?: boolean; onToggle?: (id: string, connected: boolean) => void; /** Heading under the graphic. */ title?: React.ReactNode; /** Line under the heading. */ description?: React.ReactNode; /** What sits in the hub. Default a small mark. */ hub?: React.ReactNode; /** Particles in the background field, 0 to 240. Default `48`. */ particles?: number; /** Comet speed; `2` is twice as fast. Default `1`. */ speed?: number; className?: string; } /* * Brand marks from Simple Icons (CC0, https://simpleicons.org), except the * four colour Google G. The marks belong to their owners; check each brand's * guidelines before shipping them in a product. */ const mono = (d: string, fill: string) => ( ); const GOOGLE = ( ); /** Every built in brand; pick from these or pass your own. */ export const BRANDS: BridgeBrand[] = [ { id: "google", name: "Google", colors: ["#4285F4", "#EA4335", "#FBBC05", "#34A853"], logo: GOOGLE, }, { id: "facebook", name: "Facebook", colors: ["#0866FF", "#5aa0ff"], logo: mono( "M9.101 23.691v-7.98H6.627v-3.667h2.474v-1.58c0-4.085 1.848-5.978 5.858-5.978.401 0 .955.042 1.468.103a8.68 8.68 0 0 1 1.141.195v3.325a8.623 8.623 0 0 0-.653-.036 26.805 26.805 0 0 0-.733-.009c-.707 0-1.259.096-1.675.309a1.686 1.686 0 0 0-.679.622c-.258.42-.374.995-.374 1.752v1.297h3.919l-.386 2.103-.287 1.564h-3.246v8.245C19.396 23.238 24 18.179 24 12.044c0-6.627-5.373-12-12-12s-12 5.373-12 12c0 5.628 3.874 10.35 9.101 11.647Z", "#0866FF", ), }, { id: "spotify", name: "Spotify", colors: ["#1DB954", "#7be3a0"], logo: mono( "M12 0C5.4 0 0 5.4 0 12s5.4 12 12 12 12-5.4 12-12S18.66 0 12 0zm5.521 17.34c-.24.359-.66.48-1.021.24-2.82-1.74-6.36-2.101-10.561-1.141-.418.122-.779-.179-.899-.539-.12-.421.18-.78.54-.9 4.56-1.021 8.52-.6 11.64 1.32.42.18.479.659.301 1.02zm1.44-3.3c-.301.42-.841.6-1.262.3-3.239-1.98-8.159-2.58-11.939-1.38-.479.12-1.02-.12-1.14-.6-.12-.48.12-1.021.6-1.141C9.6 9.9 15 10.561 18.72 12.84c.361.181.54.78.241 1.2zm.12-3.36C15.24 8.4 8.82 8.16 5.16 9.301c-.6.179-1.2-.181-1.38-.721-.18-.601.18-1.2.72-1.381 4.26-1.26 11.28-1.02 15.721 1.621.539.3.719 1.02.419 1.56-.299.421-1.02.599-1.559.3z", "#1DB954", ), }, { id: "slack", name: "Slack", colors: ["#E01E5A", "#36C5F0", "#2EB67D", "#ECB22E"], logo: mono( "M5.042 15.165a2.528 2.528 0 0 1-2.52 2.523A2.528 2.528 0 0 1 0 15.165a2.527 2.527 0 0 1 2.522-2.52h2.52v2.52zM6.313 15.165a2.527 2.527 0 0 1 2.521-2.52 2.527 2.527 0 0 1 2.521 2.52v6.313A2.528 2.528 0 0 1 8.834 24a2.528 2.528 0 0 1-2.521-2.522v-6.313zM8.834 5.042a2.528 2.528 0 0 1-2.521-2.52A2.528 2.528 0 0 1 8.834 0a2.528 2.528 0 0 1 2.521 2.522v2.52H8.834zM8.834 6.313a2.528 2.528 0 0 1 2.521 2.521 2.528 2.528 0 0 1-2.521 2.521H2.522A2.528 2.528 0 0 1 0 8.834a2.528 2.528 0 0 1 2.522-2.521h6.312zM18.956 8.834a2.528 2.528 0 0 1 2.522-2.521A2.528 2.528 0 0 1 24 8.834a2.528 2.528 0 0 1-2.522 2.521h-2.522V8.834zM17.688 8.834a2.528 2.528 0 0 1-2.523 2.521 2.527 2.527 0 0 1-2.52-2.521V2.522A2.527 2.527 0 0 1 15.165 0a2.528 2.528 0 0 1 2.523 2.522v6.312zM15.165 18.956a2.528 2.528 0 0 1 2.523 2.522A2.528 2.528 0 0 1 15.165 24a2.527 2.527 0 0 1-2.52-2.522v-2.522h2.52zM15.165 17.688a2.527 2.527 0 0 1-2.52-2.523 2.526 2.526 0 0 1 2.52-2.52h6.313A2.527 2.527 0 0 1 24 15.165a2.528 2.528 0 0 1-2.522 2.523h-6.313z", "#4A154B", ), }, { id: "github", name: "GitHub", colors: ["#181717", "#8b8b88"], logo: mono( "M12 .297c-6.63 0-12 5.373-12 12 0 5.303 3.438 9.8 8.205 11.385.6.113.82-.258.82-.577 0-.285-.01-1.04-.015-2.04-3.338.724-4.042-1.61-4.042-1.61C4.422 18.07 3.633 17.7 3.633 17.7c-1.087-.744.084-.729.084-.729 1.205.084 1.838 1.236 1.838 1.236 1.07 1.835 2.809 1.305 3.495.998.108-.776.417-1.305.76-1.605-2.665-.3-5.466-1.332-5.466-5.93 0-1.31.465-2.38 1.235-3.22-.135-.303-.54-1.523.105-3.176 0 0 1.005-.322 3.3 1.23.96-.267 1.98-.399 3-.405 1.02.006 2.04.138 3 .405 2.28-1.552 3.285-1.23 3.285-1.23.645 1.653.24 2.873.12 3.176.765.84 1.23 1.91 1.23 3.22 0 4.61-2.805 5.625-5.475 5.92.42.36.81 1.096.81 2.22 0 1.606-.015 2.896-.015 3.286 0 .315.21.69.825.57C20.565 22.092 24 17.592 24 12.297c0-6.627-5.373-12-12-12", "#181717", ), }, { id: "stripe", name: "Stripe", colors: ["#635BFF", "#a59fff"], logo: mono( "M13.976 9.15c-2.172-.806-3.356-1.426-3.356-2.409 0-.831.683-1.305 1.901-1.305 2.227 0 4.515.858 6.09 1.631l.89-5.494C18.252.975 15.697 0 12.165 0 9.667 0 7.589.654 6.104 1.872 4.56 3.147 3.757 4.992 3.757 7.218c0 4.039 2.467 5.76 6.476 7.219 2.585.92 3.445 1.574 3.445 2.583 0 .98-.84 1.545-2.354 1.545-1.875 0-4.965-.921-6.99-2.109l-.9 5.555C5.175 22.99 8.385 24 11.714 24c2.641 0 4.843-.624 6.328-1.813 1.664-1.305 2.525-3.236 2.525-5.732 0-4.128-2.524-5.851-6.594-7.305h.003z", "#635BFF", ), }, { id: "youtube", name: "YouTube", colors: ["#FF0000", "#ff7a7a"], logo: mono( "M23.498 6.186a3.016 3.016 0 0 0-2.122-2.136C19.505 3.545 12 3.545 12 3.545s-7.505 0-9.377.505A3.017 3.017 0 0 0 .502 6.186C0 8.07 0 12 0 12s0 3.93.502 5.814a3.016 3.016 0 0 0 2.122 2.136c1.871.505 9.376.505 9.376.505s7.505 0 9.377-.505a3.015 3.015 0 0 0 2.122-2.136C24 15.93 24 12 24 12s0-3.93-.502-5.814zM9.545 15.568V8.432L15.818 12l-6.273 3.568z", "#FF0000", ), }, { id: "apple", name: "Apple", colors: ["#242423", "#a1a19b"], logo: mono( "M12.152 6.896c-.948 0-2.415-1.078-3.96-1.04-2.04.027-3.91 1.183-4.961 3.014-2.117 3.675-.546 9.103 1.519 12.09 1.013 1.454 2.208 3.09 3.792 3.039 1.52-.065 2.09-.987 3.935-.987 1.831 0 2.35.987 3.96.948 1.637-.026 2.676-1.48 3.676-2.948 1.156-1.688 1.636-3.325 1.662-3.415-.039-.013-3.182-1.221-3.22-4.857-.026-3.04 2.48-4.494 2.597-4.559-1.429-2.09-3.623-2.324-4.39-2.376-2-.156-3.675 1.09-4.61 1.09zM15.53 3.83c.843-1.012 1.4-2.427 1.245-3.83-1.207.052-2.662.805-3.532 1.818-.78.896-1.454 2.338-1.273 3.714 1.338.104 2.715-.688 3.559-1.701", "#242423", ), }, ]; const pick = (ids: string[]) => ids.map((id) => BRANDS.find((b) => b.id === id)!); /** The default six: three a side. */ export const DEFAULT_BRANDS = pick([ "google", "facebook", "slack", "github", "stripe", "spotify", ]); // The stage is drawn at this size and scaled down to fit narrower containers. const W = 480; const H = 300; const HX = W / 2; const HY = 160; const HUB = 88; const TILE = 52; const INK = "#242423"; const GLIDE = [0.22, 1, 0.36, 1] as const; const POP = { type: "spring", stiffness: 520, damping: 28 } as const; /** Tile centres: two straight columns, evenly spaced round the hub's height. */ function spots(n: number) { const side = Math.ceil(n / 2); const gap = side > 3 ? 64 : 80; return Array.from({ length: n }, (_, i) => { const right = i >= side; const k = right ? i - side : i; const count = right ? n - side : side; const x = right ? W - 66 : 66; const y = HY + (k - (count - 1) / 2) * gap; const sx = x + (right ? -1 : 1) * (TILE / 2 + 4); const ex = HX + (right ? 1 : -1) * (HUB / 2 - 2); const ey = HY + (y - HY) * 0.28; const c1x = sx + (ex - sx) * 0.55; const c2x = sx + (ex - sx) * 0.45; const d = `M ${sx} ${y} C ${c1x} ${y}, ${c2x} ${ey}, ${ex} ${ey}`; return { x, y, sx, sy: y, ex, ey, c1x, c1y: y, c2x, c2y: ey, d }; }); } type Line = ReturnType[number]; /** A point on a wire's curve, `t` from 0 at the tile to 1 at the hub. */ function at(l: Line, t: number) { const u = 1 - t; const a = u * u * u; const b = 3 * u * u * t; const c = 3 * u * t * t; const e = t * t * t; return { x: a * l.sx + b * l.c1x + c * l.c2x + e * l.ex, y: a * l.sy + b * l.c1y + c * l.c2y + e * l.ey, }; } /** The wire bent by a magnetic pull `(ox, oy)` centred at `t` along it. */ function bent(l: Line, ox: number, oy: number, t: number) { const k = 2.2; const a = (1 - t) * k; const b = t * k; return `M ${l.sx} ${l.sy} C ${l.c1x + ox * a} ${l.c1y + oy * a}, ${l.c2x + ox * b} ${l.c2y + oy * b}, ${l.ex} ${l.ey}`; } /** How close the pointer must come for a wire to reach for it, in stage px. */ const REACH = 84; const rgba = (hex: string, a: number) => { const h = hex.replace("#", ""); const n = parseInt(h.length === 3 ? h.replace(/./g, "$&$&") : h, 16); return `rgba(${(n >> 16) & 255},${(n >> 8) & 255},${n & 255},${a})`; }; /** The default hub mark: two linked rounded squares. */ function BridgeMark() { return ( ); } interface Particle { x: number; y: number; vx: number; vy: number; r: number; a: number; color?: string; life?: number; max?: number; } export const BrandBridge = React.forwardRef( function BrandBridge( { brands = DEFAULT_BRANDS, defaultConnected = [], autoplay = true, onToggle, title = "All your tools, one hub", description = "Connect the apps your team already uses and keep every account in sync. Tap a logo to link it, tap it again to let it go.", hub, particles = 48, speed = 1, className, }, ref, ) { const still = !!useReducedMotion(); const uid = React.useId().replace(/:/g, ""); const root = React.useRef(null); React.useImperativeHandle(ref, () => root.current!); const canvas = React.useRef(null); const ring = React.useRef(null); const comets = React.useRef<(SVGPathElement | null)[]>([]); const wires = React.useRef<(SVGPathElement | null)[]>([]); const previews = React.useRef<(SVGPathElement | null)[]>([]); const seen = useInView(root, { once: true, amount: 0.3 }); const visible = useInView(root, { amount: 0.05 }); const shown = seen || still; const list = brands.slice(0, 8); const lines = React.useMemo(() => spots(list.length), [list.length]); const [on, setOn] = React.useState>( () => new Set(defaultConnected), ); const [hover, setHover] = React.useState(null); const [said, setSaid] = React.useState(""); const live = React.useRef({ on, hover, particles, speed }); live.current = { on, hover, particles, speed }; const pointer = React.useRef({ x: -999, y: -999 }); const field = React.useRef([]); // Fit the fixed stage into whatever width the card is given. const [scale, setScale] = React.useState(1); React.useLayoutEffect(() => { const el = root.current!; const ro = new ResizeObserver(() => setScale(Math.min(1, el.clientWidth / W)), ); ro.observe(el); return () => ro.disconnect(); }, []); /** A spray of brand coloured particles from a point, heading for the hub or outward. */ const burst = React.useCallback( (x: number, y: number, colors: string[], n: number, toHub: boolean) => { if (still) return; for (let k = 0; k < n; k++) { const dx = HX - x; const dy = HY - y; const d = Math.hypot(dx, dy) || 1; const a = Math.random() * Math.PI * 2; const sp = toHub ? 140 + Math.random() * 160 : 40 + Math.random() * 90; field.current.push({ x, y, vx: toHub ? (dx / d) * sp + Math.cos(a) * 30 : Math.cos(a) * sp, vy: toHub ? (dy / d) * sp + Math.sin(a) * 30 : Math.sin(a) * sp, r: 1 + Math.random() * 1.6, a: 0.9, color: colors[k % colors.length], life: 0, max: 0.8 + Math.random() * 0.7, }); } }, [still], ); const pulseHub = React.useCallback(() => { ring.current?.animate( [ { transform: "scale(1)", opacity: 0.55 }, { transform: "scale(1.35)", opacity: 0 }, ], { duration: 900, easing: "cubic-bezier(0.22, 1, 0.36, 1)" }, ); }, []); /** Connect or let go of one brand, with its burst. */ const link = (i: number, connect: boolean, auto = false) => { const b = list[i]!; setOn((prev) => { const next = new Set(prev); if (connect) next.add(b.id); else next.delete(b.id); return next; }); // Autoplay is a showcase: only a real press is announced and reported. if (!auto) { setSaid(`${b.name} ${connect ? "connected" : "disconnected"}.`); onToggle?.(b.id, connect); } const l = lines[i]!; if (connect) { burst(l.sx, l.sy, b.colors, 14, true); window.setTimeout(pulseHub, still ? 0 : 600); } else burst(l.sx, l.sy, [INK, "#a1a19b"], 10, false); }; const linkRef = React.useRef(link); linkRef.current = link; // Autoplay: connect everything one by one in a random order, once. When all // are in it stays that way; a reload or remount plays it again. A press // hands control to the user. const [auto, setAuto] = React.useState(autoplay && !still); const [inside, setInside] = React.useState(false); React.useEffect(() => setAuto(autoplay && !still), [autoplay, still]); React.useEffect(() => { if (!auto || !shown || !visible || inside) return; let timer = 0; const connect = () => { const cur = live.current.on; const left = list.flatMap((b, i) => (cur.has(b.id) ? [] : [i])); if (!left.length) { setAuto(false); return; } linkRef.current( left[Math.floor(Math.random() * left.length)]!, true, true, ); timer = window.setTimeout(connect, 850 + Math.random() * 750); }; timer = window.setTimeout(connect, seen ? 900 : 1200); return () => window.clearTimeout(timer); // eslint-disable-next-line react-hooks/exhaustive-deps }, [auto, shown, visible, inside, list.length]); // One loop: the comets along the connected wires and the particle field. React.useEffect(() => { const el = canvas.current; if (!el || !shown) return; const ctx = el.getContext("2d")!; const dpr = Math.min(2, window.devicePixelRatio || 1); el.width = W * dpr; el.height = H * dpr; const seed = () => ({ x: Math.random() * W, y: Math.random() * H, vx: (Math.random() - 0.5) * 10, vy: (Math.random() - 0.5) * 10, r: 0.6 + Math.random() * 0.9, a: 0.08 + Math.random() * 0.14, }); const ambient = () => field.current.filter((p) => p.life === undefined).length; while (ambient() < live.current.particles) field.current.push(seed()); const draw = () => { ctx.setTransform(dpr, 0, 0, dpr, 0, 0); ctx.clearRect(0, 0, W, H); for (const p of field.current) { const fade = p.life !== undefined ? Math.max(0, 1 - p.life / (p.max ?? 1)) : 1; ctx.fillStyle = p.color ? rgba(p.color, p.a * fade) : rgba(INK, p.a); ctx.beginPath(); ctx.arc( p.x, p.y, p.r * (p.color ? 0.6 + fade * 0.6 : 1), 0, Math.PI * 2, ); ctx.fill(); } }; // Each wire's comet runs at its own pace and phase. const n = lines.length; const pace = lines.map((_, i) => 3.2 + ((i * 7) % 5) * 0.4); const progress = lines.map((_, i) => -((i * 0.53) % 1) * 1.4); const lengths: number[] = []; // The magnetic pull on each wire: an offset on a springy, slightly bouncy follow. const pull = lines.map(() => ({ ox: 0, oy: 0, vx: 0, vy: 0, t: 0.5 })); let grabbed: number | null = null; const magnet = (dt: number) => { const ptr = pointer.current; const { on: conn, hover: hv } = live.current; let near: number | null = null; let best = REACH; for (let i = 0; i < n; i++) { const l = lines[i]!; const m = pull[i]!; let tx = 0; let ty = 0; if (conn.has(list[i]!.id)) { // The nearest point on the resting curve. let bt = 0.5; let bd = Infinity; for (let s = 1; s < 24; s++) { const q = at(l, s / 24); const dd = Math.hypot(q.x - ptr.x, q.y - ptr.y); if (dd < bd) { bd = dd; bt = s / 24; } } if (bd < REACH) { const q = at(l, bt); const f = 0.95 * (1 - (bd / REACH) ** 2); tx = (ptr.x - q.x) * f; ty = (ptr.y - q.y) * f; m.t += (bt - m.t) * Math.min(1, dt * 10); if (bd < best) { best = bd; near = i; } } } m.vx += (tx - m.ox) * 260 * dt; m.vy += (ty - m.oy) * 260 * dt; m.vx *= Math.exp(-dt * 10); m.vy *= Math.exp(-dt * 10); m.ox += m.vx * dt; m.oy += m.vy * dt; if ( Math.abs(m.ox) + Math.abs(m.oy) + Math.abs(m.vx) + Math.abs(m.vy) < 0.02 ) { if (m.ox || m.oy) { m.ox = m.oy = m.vx = m.vy = 0; for (const el of [ wires.current[i], previews.current[i], comets.current[i], ]) el?.setAttribute("d", l.d); lengths[i] = 0; } continue; } const d = bent(l, m.ox, m.oy, m.t); for (const el of [ wires.current[i], previews.current[i], comets.current[i], ]) el?.setAttribute("d", d); lengths[i] = 0; } // The wire being pulled lights up like a hovered tile. if (near !== null && hv !== near && (hv === null || hv === grabbed)) { grabbed = near; setHover(near); } else if (near === null && grabbed !== null) { if (hv === grabbed) setHover(null); grabbed = null; } }; const place = () => { for (let i = 0; i < n; i++) { const c = comets.current[i]; if (!c) continue; if (!lengths[i]) lengths[i] = c.getTotalLength(); const len = lengths[i]!; const seg = live.current.hover === i ? 70 : 46; const u = Math.max(0, Math.min(1, progress[i]!)); c.style.strokeDasharray = `${seg} ${len + seg}`; c.style.strokeDashoffset = String(seg - u * (len + seg)); c.style.opacity = progress[i]! < 0 || progress[i]! > 1 ? "0" : "1"; } }; if (still || !visible) { draw(); place(); return; } let raf = 0; let last = performance.now(); const frame = (now: number) => { raf = requestAnimationFrame(frame); if (document.hidden) return; const dt = Math.min(0.05, (now - last) / 1000); last = now; const { on: conn, hover: hv, particles: want, speed: sp, } = live.current; magnet(dt); // Comets: only on connected wires; landing pulses the hub and throws sparks. for (let i = 0; i < n; i++) { const b = list[i]; if (!b || !conn.has(b.id)) { progress[i] = -0.4 - Math.random(); continue; } progress[i]! += (dt * sp * (hv === i ? 2 : 1)) / pace[i]!; if (progress[i]! > 1.15) { progress[i] = -1.2 - Math.random() * 1.6; const l = lines[i]!; burst(l.ex, l.ey, b.colors, 3, false); pulseHub(); } } place(); // Keep the ambient count in line with the setting. let count = ambient(); while (count < want) { field.current.push(seed()); count++; } if (count > want) { let drop = count - want; field.current = field.current.filter( (p) => p.life !== undefined || drop-- <= 0, ); } const ptr = pointer.current; field.current = field.current.filter((p) => { if (p.life !== undefined) { p.life += dt; p.vx *= Math.exp(-dt * 1.4); p.vy *= Math.exp(-dt * 1.4); p.x += p.vx * dt; p.y += p.vy * dt; return p.life < (p.max ?? 1); } // A little wander. p.vx += (Math.random() - 0.5) * 18 * dt; p.vy += (Math.random() - 0.5) * 18 * dt; // A slow swirl round the hub. const hx = p.x - HX; const hy = p.y - HY; const hd = Math.hypot(hx, hy) || 1; if (hd < 150) { const k = (1 - hd / 150) * 26; p.vx += (-hy / hd) * k * dt; p.vy += (hx / hd) * k * dt; } // Scatter from the pointer. const dx = p.x - ptr.x; const dy = p.y - ptr.y; const d = Math.hypot(dx, dy); if (d < 90 && d > 0.1) { const k = (1 - d / 90) ** 2 * 900; p.vx += (dx / d) * k * dt; p.vy += (dy / d) * k * dt; } p.vx *= Math.exp(-dt * 1.2); p.vy *= Math.exp(-dt * 1.2); p.x += p.vx * dt; p.y += p.vy * dt; if (p.x < -4) p.x = W + 4; if (p.x > W + 4) p.x = -4; if (p.y < -4) p.y = H + 4; if (p.y > H + 4) p.y = -4; return true; }); draw(); }; raf = requestAnimationFrame(frame); return () => cancelAnimationFrame(raf); // eslint-disable-next-line react-hooks/exhaustive-deps }, [shown, still, visible, lines, burst, pulseHub]); const connected = list.filter((b) => on.has(b.id)); const ringColors = connected.flatMap((b) => b.colors.slice(0, 2)); const conic = ringColors.length ? `conic-gradient(from 0deg, ${[...ringColors, ringColors[0]].join(", ")})` : "conic-gradient(from 0deg, #e4e4e0, #c8c8c3, #e4e4e0)"; const lineAt = (i: number) => 0.55 + i * 0.07; return (

{/* The graphic */}

{ const r = e.currentTarget.getBoundingClientRect(); // Stage pixels, whatever scale the card is drawn at. const k = r.width / W; pointer.current = { x: (e.clientX - r.left) / k, y: (e.clientY - r.top) / k, }; }} onPointerEnter={() => setInside(true)} onPointerLeave={() => { pointer.current = { x: -999, y: -999 }; setInside(false); }} >

{/* Heading and line, centred under the graphic. */}

{title} {description}

{said}

); }, );