62:I[707087,["/_next/static/immutable/chunks/3arlv5bvukoo2.js","/_next/static/immutable/chunks/39v64hmfyo-sr.js","/_next/static/immutable/chunks/2nvof3-29tvc3.js","/_next/static/immutable/chunks/3tjobt77z_9dj.js","/_next/static/immutable/chunks/04j_o97cgxn2x.js","/_next/static/immutable/chunks/3upr08c9vtj8w.js","/_next/static/immutable/chunks/1ww0328si-u8x.js","/_next/static/immutable/chunks/11mfl5ymqld9-.js","/_next/static/immutable/chunks/2xxcqy6ppds3l.js","/_next/static/immutable/chunks/1bpgyrs5qflhu.js","/_next/static/immutable/chunks/0-6vu2ul1h6ld.js","/_next/static/immutable/chunks/43_s7jweyypoh.js","/_next/static/immutable/chunks/0p6vao205o1jc.js","/_next/static/immutable/chunks/1_kyvgkyokw92.js","/_next/static/immutable/chunks/1lo-zn37dolb5.js","/_next/static/immutable/chunks/1v8k6yxw1rg0u.js"],"RegistryDependencies"] 63:I[314491,["/_next/static/immutable/chunks/3arlv5bvukoo2.js","/_next/static/immutable/chunks/39v64hmfyo-sr.js","/_next/static/immutable/chunks/2nvof3-29tvc3.js","/_next/static/immutable/chunks/3tjobt77z_9dj.js","/_next/static/immutable/chunks/04j_o97cgxn2x.js","/_next/static/immutable/chunks/3upr08c9vtj8w.js","/_next/static/immutable/chunks/1ww0328si-u8x.js","/_next/static/immutable/chunks/11mfl5ymqld9-.js","/_next/static/immutable/chunks/2xxcqy6ppds3l.js","/_next/static/immutable/chunks/1bpgyrs5qflhu.js","/_next/static/immutable/chunks/0-6vu2ul1h6ld.js","/_next/static/immutable/chunks/43_s7jweyypoh.js","/_next/static/immutable/chunks/0p6vao205o1jc.js","/_next/static/immutable/chunks/1_kyvgkyokw92.js","/_next/static/immutable/chunks/1lo-zn37dolb5.js","/_next/static/immutable/chunks/1v8k6yxw1rg0u.js"],"FilesView"] 64:T4dc1,import { useCallback, useEffect, useMemo, useRef } from "react"; import type { PointerEvent as ReactPointerEvent } from "react"; import { useReducedMotion } from "framer-motion"; /** The prints, from the heaviest (hung highest, on the long arm) to the lightest. */ const prints = [ { title: "Spot, signal red", src: "https://images.pexels.com/photos/14598236/pexels-photo-14598236.jpeg?auto=compress&cs=tinysrgb&w=600", alt: "Woman in dark sunglasses and a black top in front of a pale spotlight circle on a red wall", focus: "50% 35%", tone: "#b3202a", w: 186, h: 246, rest: -0.4 }, { title: "Half sun", src: "https://images.pexels.com/photos/7516560/pexels-photo-7516560.jpeg?auto=compress&cs=tinysrgb&w=600", alt: "Woman in a red dress standing against a yellow wall with a large red half circle", focus: "50% 40%", tone: "#e0a21a", w: 150, h: 200, rest: 0.34 }, { title: "Blue on blue", src: "https://images.pexels.com/photos/30755172/pexels-photo-30755172.jpeg?auto=compress&cs=tinysrgb&w=600", alt: "Woman in pale blue clothes crouching against a deep blue backdrop", focus: "50% 45%", tone: "#1f4fa3", w: 132, h: 176, rest: -0.26 }, { title: "Wide brim", src: "https://images.pexels.com/photos/35024256/pexels-photo-35024256.jpeg?auto=compress&cs=tinysrgb&w=600", alt: "Person in a pale yellow suit and a wide black hat against a dark red backdrop", focus: "50% 35%", tone: "#6e0f14", w: 118, h: 156, rest: 0.46 }, ]; // Design pixels for a 900 wide scene, drawn large and scaled down to fit so it stays sharp. const W = 900; const H = 780; const CEILING = { x: 375, y: -8 }; const PULL = 96; // how far a print can be pulled from where it hangs const GRAVITY = 0.3; // pixels per step squared, at 120 steps a second const DAMPING = 0.9986; const SHADOW = { x: 44, y: 56 }; const EYELET = 13; // how far below a print's top edge its thread ties on const THICK = 4; // card thickness const ARMS = [[225, 168], [126, 156], [93, 108]]; // left and right length of each wire arm, top arm first const PIVOT = 0.3; // weight of a wire's hanging loop const END = 0.3; // weight of a wire's end loop const TIE = 0.2; // weight of the knot at a print's eyelet type Pt = { x: number; y: number; px: number; py: number; w: number }; type Rod = { l: number; p: number; r: number }; type Card = { t: number; m: number; hx: number; hy: number }; type Model = { pts: Pt[]; links: [number, number, number][]; rods: Rod[]; cards: Card[]; threads: [number, number][] }; const clamp = (v: number, lo: number, hi: number) => Math.min(hi, Math.max(lo, v)); /** * Three wire arms, each hung from the one above. Arm lengths and print weights are chosen so * that weight times arm length matches on both sides of every pivot, which is what makes a * real mobile hang level. */ function buildModel(): Model { const pts: Pt[] = []; const links: [number, number, number][] = []; const rods: Rod[] = []; const cards: Card[] = []; const threads: [number, number][] = []; const add = (x: number, y: number, mass: number) => pts.push({ x, y, px: x, py: y, w: mass === 0 ? 0 : 1 / mass }) - 1; const join = (a: number, b: number) => links.push([a, b, Math.hypot(pts[a].x - pts[b].x, pts[a].y - pts[b].y)]); const rod = (from: number, thread: number, armL: number, armR: number, rise: number) => { const p = add(pts[from].x, pts[from].y + thread, PIVOT); const l = add(pts[p].x - armL, pts[p].y + rise, END); const r = add(pts[p].x + armR, pts[p].y + rise, END); join(from, p); join(p, l); join(p, r); join(l, r); threads.push([from, p]); rods.push({ l, p, r }); return { l, r }; }; const card = (from: number, thread: number, index: number, mass: number) => { const t = add(pts[from].x, pts[from].y + thread, TIE); const m = add(pts[t].x, pts[t].y + prints[index].h * 0.5, mass); join(from, t); join(t, m); threads.push([from, t]); cards[index] = { t, m, hx: pts[m].x, hy: pts[m].y }; }; // work the weights out from the lightest print upward const m4 = 1; const m3 = ((END + TIE + m4) * ARMS[2][1]) / ARMS[2][0] - END - TIE; const massC = PIVOT + 2 * END + 2 * TIE + m3 + m4; const m2 = ((END + massC) * ARMS[1][1]) / ARMS[1][0] - END - TIE; const massB = PIVOT + 2 * END + TIE + m2 + massC; const m1 = ((END + massB) * ARMS[0][1]) / ARMS[0][0] - END - TIE; const pin = add(CEILING.x, CEILING.y, 0); const a = rod(pin, 99, ARMS[0][0], ARMS[0][1], 33); card(a.l, 84, 0, m1); const b = rod(a.r, 69, ARMS[1][0], ARMS[1][1], 24); card(b.l, 159, 1, m2); const c = rod(b.r, 48, ARMS[2][0], ARMS[2][1], 20); card(c.l, 186, 2, m3); card(c.r, 57, 3, m4); return { pts, links, rods, cards, threads }; } export default function HangingPhotoMobile() { const reduce = useReducedMotion(); const model = useMemo(buildModel, []); const rootRef = useRef(null); const sceneRef = useRef(null); const cardRefs = useRef<(HTMLDivElement | null)[]>([]); const slabRefs = useRef<(HTMLDivElement | null)[]>([]); const shadeRefs = useRef<(HTMLDivElement | null)[]>([]); const sheenRefs = useRef<(HTMLDivElement | null)[]>([]); const shadowRefs = useRef<(HTMLDivElement | null)[]>([]); const wireRefs = useRef<(SVGPathElement | null)[]>([]); const threadRefs = useRef<(SVGPathElement | null)[]>([]); const sim = useRef({ scale: 1, drag: -1, tx: 0, ty: 0, ox: 0, oy: 0, lastTouch: 0, time: 0, gust: 1, yaw: prints.map((p) => p.rest), spin: prints.map(() => 0), }); const breeze = useCallback( (strength: number) => { const s = sim.current; s.gust = -s.gust; model.cards.forEach((c, i) => { model.pts[c.m].px -= s.gust * strength * (1.05 + 0.33 * i); s.spin[i] += s.gust * strength * 0.0006 * (i % 2 ? -1 : 1); }); s.lastTouch = performance.now(); }, [model], ); useEffect(() => { const root = rootRef.current; const scene = sceneRef.current; if (!root || !scene) return; const s = sim.current; const { pts, links, rods, cards, threads } = model; let raf = 0; let running = false; let visible = true; let last = 0; let acc = 0; const fit = () => { s.scale = Math.min(1, root.clientWidth / W); scene.style.transform = `translateX(-50%) scale(${s.scale})`; root.style.height = `${Math.round(Math.max(H * s.scale, 420))}px`; }; const stepOnce = () => { s.time += 1 / 120; for (let i = 1; i < pts.length; i++) { const p = pts[i]; const vx = clamp((p.x - p.px) * DAMPING, -24, 24); const vy = clamp((p.y - p.py) * DAMPING, -24, 24); p.px = p.x; p.py = p.y; p.x += vx; p.y += vy + GRAVITY; if (p.y < 8) p.y = 8; // nothing swings up through the ceiling } for (let it = 0; it < 70; it++) { if (s.drag >= 0) { const g = pts[cards[s.drag].m]; g.x += (s.tx - g.x) * 0.3; g.y += (s.ty - g.y) * 0.3; } for (let i = 0; i < links.length; i++) { const a = pts[links[i][0]]; const b = pts[links[i][1]]; const dx = b.x - a.x; const dy = b.y - a.y; const d = Math.hypot(dx, dy) || 0.0001; const sum = a.w + b.w; const k = (d - links[i][2]) / d; a.x += dx * k * (a.w / sum); a.y += dy * k * (a.w / sum); b.x -= dx * k * (b.w / sum); b.y -= dy * k * (b.w / sum); } } // each print also turns on its thread: the twist in the thread winds it back, // moving through the air turns it, and the room is never perfectly still for (let i = 0; i < cards.length; i++) { const m = pts[cards[i].m]; const vx = m.x - m.px; s.spin[i] += (prints[i].rest - s.yaw[i]) * 0.00008 - s.spin[i] * 0.004 + vx * 0.0003 * (i % 2 ? -1 : 1) + Math.sin(s.time * (0.5 + i * 0.13) + i * 1.9) * 0.000016; s.spin[i] = clamp(s.spin[i], -0.06, 0.06); s.yaw[i] += s.spin[i]; } }; const draw = () => { for (let i = 0; i < cards.length; i++) { const t = pts[cards[i].t]; const m = pts[cards[i].m]; const p = prints[i]; const tilt = (Math.atan2(-(m.x - t.x), m.y - t.y) * 180) / Math.PI; const yaw = s.yaw[i]; const x = t.x - p.w / 2; const y = t.y - EYELET; const el = cardRefs.current[i]; if (el) el.style.transform = `translate3d(${x.toFixed(2)}px, ${y.toFixed(2)}px, 0) rotate(${tilt.toFixed(2)}deg)`; const slab = slabRefs.current[i]; if (slab) slab.style.transform = `rotateY(${((yaw * 180) / Math.PI).toFixed(2)}deg)`; const facing = Math.cos(yaw); const shade = shadeRefs.current[i]; if (shade) shade.style.opacity = (0.5 * (1 - Math.abs(facing)) + (Math.sin(yaw) > 0 ? 0.07 : 0)).toFixed(3); const sheen = sheenRefs.current[i]; if (sheen) { const off = yaw + 0.3; sheen.style.opacity = (0.4 * Math.exp(-(off * off) / 0.05)).toFixed(3); sheen.style.transform = `translateX(${(off * 160).toFixed(1)}%)`; } const sh = shadowRefs.current[i]; if (sh) sh.style.transform = `translate3d(${(x + SHADOW.x).toFixed(2)}px, ${(y + SHADOW.y).toFixed(2)}px, 0) rotate(${tilt.toFixed(2)}deg) scaleX(${Math.max(0.04, Math.abs(facing)).toFixed(3)})`; } let wires = ""; let loops = ""; for (const r of rods) { const l = pts[r.l]; const p = pts[r.p]; const rr = pts[r.r]; const cx = 2 * p.x - (l.x + rr.x) / 2; const cy = 2 * p.y - (l.y + rr.y) / 2; wires += `M${l.x.toFixed(1)} ${l.y.toFixed(1)}Q${cx.toFixed(1)} ${cy.toFixed(1)} ${rr.x.toFixed(1)} ${rr.y.toFixed(1)}`; for (const e of [l, rr]) loops += `M${(e.x + 4.6).toFixed(1)} ${(e.y + 4.4).toFixed(1)}a4.6 4.6 0 1 1 -9.2 0a4.6 4.6 0 1 1 9.2 0`; loops += `M${(p.x + 4.4).toFixed(1)} ${(p.y - 4.4).toFixed(1)}a4.4 4.4 0 1 1 -8.8 0a4.4 4.4 0 1 1 8.8 0`; } let lines = ""; for (const [a, b] of threads) lines += `M${pts[a].x.toFixed(1)} ${pts[a].y.toFixed(1)}L${pts[b].x.toFixed(1)} ${pts[b].y.toFixed(1)}`; wireRefs.current.forEach((el, i) => el && el.setAttribute("d", i < 3 ? wires : wires + loops)); threadRefs.current.forEach((el) => el && el.setAttribute("d", lines)); }; const frame = (now: number) => { raf = requestAnimationFrame(frame); acc += Math.min(0.05, (now - last) / 1000); last = now; let n = 0; while (acc >= 1 / 120 && n < 6) { stepOnce(); acc -= 1 / 120; n++; } if (s.drag < 0 && now - s.lastTouch > 6500) breeze(1.3); draw(); }; const start = () => { if (running || reduce || !visible || document.hidden) return; running = true; last = performance.now(); acc = 0; raf = requestAnimationFrame(frame); }; const stop = () => { running = false; cancelAnimationFrame(raf); }; fit(); if (!reduce) { // start it already moving, as if someone has just walked past breeze(1.7); s.lastTouch = performance.now(); } draw(); const ro = new ResizeObserver(fit); ro.observe(root); const io = new IntersectionObserver(([entry]) => { visible = entry.isIntersecting; if (visible) start(); else stop(); }); io.observe(root); const vis = () => (document.hidden ? stop() : start()); document.addEventListener("visibilitychange", vis); start(); return () => { stop(); ro.disconnect(); io.disconnect(); document.removeEventListener("visibilitychange", vis); }; }, [reduce, model, breeze]); const aim = (e: ReactPointerEvent) => { const scene = sceneRef.current; if (!scene) return; const s = sim.current; const r = scene.getBoundingClientRect(); s.tx = (e.clientX - r.left) / s.scale + s.ox; s.ty = (e.clientY - r.top) / s.scale + s.oy; if (s.drag >= 0) { const home = model.cards[s.drag]; const dx = s.tx - home.hx; const dy = s.ty - home.hy; const d = Math.hypot(dx, dy); if (d > PULL) { s.tx = home.hx + (dx / d) * PULL; s.ty = home.hy + (dy / d) * PULL; } } }; const grab = (i: number) => (e: ReactPointerEvent) => { if (reduce) return; const s = sim.current; const m = model.pts[model.cards[i].m]; s.ox = 0; s.oy = 0; aim(e); s.ox = m.x - s.tx; s.oy = m.y - s.ty; s.drag = i; aim(e); e.currentTarget.setPointerCapture(e.pointerId); }; const release = () => { sim.current.drag = -1; sim.current.lastTouch = performance.now(); }; return (

{/* shadows on the wall behind */} {prints.map((p, i) => (

{ shadowRefs.current[i] = el; }} className="pointer-events-none absolute left-0 top-0 rounded-[3px] bg-[#1d1a14]/25 blur-[18px]" style={{ width: p.w, height: p.h, transformOrigin: `50% ${EYELET}px` }} /> ))} {/* threads */} {/* the prints */} {prints.map((p, i) => (

{ cardRefs.current[i] = el; }} onPointerDown={grab(i)} onPointerMove={(e) => sim.current.drag === i && aim(e)} onPointerUp={release} onPointerCancel={release} className="absolute left-0 top-0 cursor-grab touch-none active:cursor-grabbing" style={{ width: p.w, height: p.h, transformOrigin: `50% ${EYELET}px`, transformStyle: "preserve-3d" }} >

{ slabRefs.current[i] = el; }} className="absolute inset-0" style={{ transformStyle: "preserve-3d", transform: `rotateY(${p.rest}rad)` }}> {/* front: the photograph with a white border */}

No. {String(i + 1).padStart(2, "0")}

{ shadeRefs.current[i] = el; }} className="pointer-events-none absolute inset-0 bg-[#14110b]" style={{ opacity: 0 }} />

{ sheenRefs.current[i] = el; }} className="pointer-events-none absolute inset-y-0 left-[20%] w-[60%]" style={{ opacity: 0, background: "linear-gradient(100deg, rgba(255,255,255,0) 0%, rgba(255,255,255,0.85) 50%, rgba(255,255,255,0) 100%)" }} />

{/* back: plain card with the print's number and title */}

No. {String(i + 1).padStart(2, "0")} {p.title}

{/* the two long edges, so the card has thickness when it turns side on */}

{/* brass eyelet the thread ties through */}

))} {/* wire arms, in front of the threads */}

Four prints / three wires
Pull one and the rest answer

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