51: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/3j06ow7w40nxu.js","/_next/static/immutable/chunks/31nn7jwsjvqii.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"] 52: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/3j06ow7w40nxu.js","/_next/static/immutable/chunks/31nn7jwsjvqii.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"] 53:T91c5,"use client"; /* eslint-disable react/no-unknown-property */ import { cn } from "@/lib/utils"; import { Canvas, type ThreeEvent, useFrame, useThree } from "@react-three/fiber"; import { type CSSProperties, type PointerEvent as ReactPointerEvent, useCallback, useEffect, useMemo, useRef, useState, } from "react"; import * as THREE from "three"; import { RoundedBoxGeometry } from "three/addons/geometries/RoundedBoxGeometry.js"; export interface NewsletterBookshelfItem { id: string; title: string; date: string; subtitle?: string; href?: string; color?: string; foil?: string; } export interface NewsletterBookshelfProps { items?: NewsletterBookshelfItem[]; className?: string; height?: number | string; brand?: string; onSelect?: (item: NewsletterBookshelfItem, index: number) => void; } type BookLayout = NewsletterBookshelfItem & { x: number; width: number; bookHeight: number; depth: number; motif: number; color: string; foil: string; }; const PALETTE = [ "#0b1e4b", "#16277a", "#2233b8", "#4040ff", "#6b7bff", "#9fb0ff", "#dce4ff", "#faf7ee", "#efe8d4", "#f4f2ec", "#25252a", "#3a3a40", ]; const defaultTitles = [ "The systems issue", "A field guide to good taste", "The small team advantage", "Notes on building in public", "A better creative workflow", "The useful AI playbook", "Designing for momentum", "The quiet automation stack", "How ideas become products", "The founder's operating manual", "A week of useful experiments", "The leverage edition", "What we learned shipping early", "Tools worth keeping", "The case for fewer meetings", "A practical guide to agents", "Making software feel human", "The compounding details", "Build the smallest useful thing", "The creative director in your pocket", "Signals from the frontier", "A calmer way to move fast", "The prototype-first company", "Workflows that actually stick", "The one-person studio", "Notes from a strange future", "The high-agency handbook", "A new interface for work", "The craft issue", "Ideas with a pulse", "The independent builder", "A map for the next chapter", ]; export const defaultNewsletterBooks: NewsletterBookshelfItem[] = defaultTitles.map((title, index) => ({ id: `edition-${defaultTitles.length - index}`, title, date: new Intl.DateTimeFormat("en-US", { month: "short", day: "numeric", year: "numeric", timeZone: "UTC", }) .format(new Date(Date.UTC(2026, 6, 31 - index * 7, 12))) .toUpperCase(), subtitle: "A concise collection of practical notes, experiments, and ideas for people building what comes next.", })); function hash(input: string) { let value = 2166136261; for (let index = 0; index < input.length; index += 1) { value ^= input.charCodeAt(index); value = Math.imul(value, 16777619); } return value >>> 0; } function seeded(seed: number) { let value = seed >>> 0; return () => { value += 0x6d2b79f5; let next = value; next = Math.imul(next ^ (next >>> 15), next | 1); next ^= next + Math.imul(next ^ (next >>> 7), next | 61); return ((next ^ (next >>> 14)) >>> 0) / 4294967296; }; } function luminance(hex: string) { const color = Number.parseInt(hex.slice(1), 16); const channel = (value: number) => { const normalized = value / 255; return normalized <= 0.03928 ? normalized / 12.92 : ((normalized + 0.055) / 1.055) ** 2.4; }; return ( channel((color >> 16) & 255) * 0.2126 + channel((color >> 8) & 255) * 0.7152 + channel(color & 255) * 0.0722 ); } function deriveLayout(items: NewsletterBookshelfItem[]) { let cursor = 0; return items.map((item) => { const random = seeded(hash(item.id)); const fallbackColor = PALETTE[Math.floor(random() * PALETTE.length)]!; const width = 0.34 + random() * 0.3; const bookHeight = 3.65 + (random() * 2 - 1) * 0.22; const color = item.color ?? fallbackColor; const foil = item.foil ?? (luminance(color) < 0.5 ? "#f2ead8" : "#3030ff"); if (random() < 0.14) cursor += 0.2; const x = cursor + width / 2; cursor += width + 0.065; return { ...item, x, width, bookHeight, depth: bookHeight * 0.67, motif: Math.floor(random() * 8), color, foil, }; }); } function roundedRect( context: CanvasRenderingContext2D, x: number, y: number, width: number, height: number, radius: number, ) { context.beginPath(); context.roundRect(x, y, width, height, radius); } function drawMotif( context: CanvasRenderingContext2D, motif: number, x: number, y: number, size: number, color: string, ) { context.save(); context.translate(x + size / 2, y + size / 2); context.strokeStyle = color; context.fillStyle = color; context.lineWidth = Math.max(2, size * 0.035); if (motif === 0) { for (let index = -2; index <= 2; index += 1) { context.beginPath(); context.arc(0, 0, size * (0.12 + index * 0.035), 0, Math.PI * 2); context.stroke(); } } else if (motif === 1) { context.rotate(Math.PI / 4); for (let index = -1; index <= 1; index += 1) { context.strokeRect( -size * (0.24 + index * 0.055), -size * (0.24 + index * 0.055), size * (0.48 + index * 0.11), size * (0.48 + index * 0.11), ); } } else if (motif === 2) { for (let index = 0; index < 6; index += 1) { context.rotate(Math.PI / 3); roundedRect(context, -size * 0.045, -size * 0.36, size * 0.09, size * 0.28, size * 0.04); context.fill(); } context.beginPath(); context.arc(0, 0, size * 0.11, 0, Math.PI * 2); context.fill(); } else if (motif === 3) { context.beginPath(); for (let index = 0; index < 12; index += 1) { const radius = index % 2 ? size * 0.17 : size * 0.35; const angle = -Math.PI / 2 + (index * Math.PI) / 6; const px = Math.cos(angle) * radius; const py = Math.sin(angle) * radius; if (index === 0) context.moveTo(px, py); else context.lineTo(px, py); } context.closePath(); context.stroke(); } else if (motif === 4) { for (let row = -2; row <= 2; row += 1) { for (let column = -2; column <= 2; column += 1) { if ((row + column) % 2 === 0) { context.beginPath(); context.arc(column * size * 0.13, row * size * 0.13, size * 0.035, 0, Math.PI * 2); context.fill(); } } } } else if (motif === 5) { for (let index = -2; index <= 2; index += 1) { context.beginPath(); context.moveTo(-size * 0.34, index * size * 0.12); context.bezierCurveTo( -size * 0.12, index * size * 0.12 - size * 0.11, size * 0.12, index * size * 0.12 + size * 0.11, size * 0.34, index * size * 0.12, ); context.stroke(); } } else if (motif === 6) { context.beginPath(); context.moveTo(0, -size * 0.37); context.lineTo(size * 0.34, size * 0.28); context.lineTo(-size * 0.34, size * 0.28); context.closePath(); context.stroke(); context.beginPath(); context.arc(0, size * 0.02, size * 0.11, 0, Math.PI * 2); context.fill(); } else { context.rotate(Math.PI / 4); context.fillRect(-size * 0.035, -size * 0.36, size * 0.07, size * 0.72); context.fillRect(-size * 0.36, -size * 0.035, size * 0.72, size * 0.07); context.beginPath(); context.arc(0, 0, size * 0.25, 0, Math.PI * 2); context.stroke(); } context.restore(); } function addTexture( context: CanvasRenderingContext2D, width: number, height: number, seed: number, ) { const image = context.getImageData(0, 0, width, height); const random = seeded(seed); for (let offset = 0; offset < image.data.length; offset += 4) { const noise = (random() - 0.5) * 5; image.data[offset] = Math.max(0, Math.min(255, image.data[offset]! + noise)); image.data[offset + 1] = Math.max(0, Math.min(255, image.data[offset + 1]! + noise)); image.data[offset + 2] = Math.max(0, Math.min(255, image.data[offset + 2]! + noise)); } context.putImageData(image, 0, 0); } function drawClothWeave( context: CanvasRenderingContext2D, width: number, height: number, seed: number, ) { const random = seeded(seed); context.save(); context.lineCap = "round"; context.globalCompositeOperation = "multiply"; for (let x = 0.5; x < width; x += 3) { context.strokeStyle = `rgba(18, 16, 14, ${0.03 + random() * 0.035})`; context.lineWidth = 0.35 + random() * 0.3; context.beginPath(); context.moveTo(x + (random() - 0.5) * 0.5, 0); context.lineTo(x + (random() - 0.5) * 0.5, height); context.stroke(); } context.globalCompositeOperation = "screen"; for (let y = 0.5; y < height; y += 3) { context.strokeStyle = `rgba(255, 248, 232, ${0.035 + random() * 0.03})`; context.lineWidth = 0.3 + random() * 0.25; context.beginPath(); context.moveTo(0, y + (random() - 0.5) * 0.5); context.lineTo(width, y + (random() - 0.5) * 0.5); context.stroke(); } context.globalCompositeOperation = "overlay"; for (let index = 0; index < Math.floor((width * height) / 850); index += 1) { const x = random() * width; const y = random() * height; const length = 3 + random() * 13; context.strokeStyle = `rgba(255, 255, 255, ${0.035 + random() * 0.055})`; context.lineWidth = 0.35 + random() * 0.4; context.beginPath(); context.moveTo(x, y); context.lineTo(x + (random() - 0.5) * 2, y + length); context.stroke(); } context.globalCompositeOperation = "source-over"; const edgeShade = context.createLinearGradient(0, 0, width, 0); edgeShade.addColorStop(0, "rgba(0,0,0,.16)"); edgeShade.addColorStop(0.045, "rgba(0,0,0,.025)"); edgeShade.addColorStop(0.5, "rgba(255,255,255,.025)"); edgeShade.addColorStop(0.955, "rgba(0,0,0,.025)"); edgeShade.addColorStop(1, "rgba(0,0,0,.18)"); context.fillStyle = edgeShade; context.fillRect(0, 0, width, height); context.restore(); } function paperTexture(book: BookLayout) { if (typeof document === "undefined") return null; const canvas = document.createElement("canvas"); canvas.width = 192; canvas.height = 768; const context = canvas.getContext("2d"); if (!context) return null; const random = seeded(hash(`${book.id}-paper`)); context.fillStyle = "#eee9dc"; context.fillRect(0, 0, canvas.width, canvas.height); addTexture(context, canvas.width, canvas.height, hash(`${book.id}-paper-noise`)); for (let y = 0.5; y < canvas.height; y += 2) { const warm = Math.floor(116 + random() * 35); context.strokeStyle = `rgba(${warm}, ${warm - 6}, ${warm - 17}, ${0.09 + random() * 0.1})`; context.lineWidth = random() > 0.94 ? 1 : 0.42; context.beginPath(); context.moveTo((random() - 0.5) * 4, y); context.bezierCurveTo( canvas.width * 0.33, y + (random() - 0.5) * 0.8, canvas.width * 0.66, y + (random() - 0.5) * 0.8, canvas.width + (random() - 0.5) * 4, y, ); context.stroke(); } for (let x = 0.5; x < canvas.width; x += 4) { context.strokeStyle = `rgba(124, 103, 72, ${0.025 + random() * 0.04})`; context.lineWidth = 0.35; context.beginPath(); context.moveTo(x, 0); context.lineTo(x + (random() - 0.5) * 1.5, canvas.height); context.stroke(); } for (let index = 0; index < 170; index += 1) { const x = random() * canvas.width; const y = random() * canvas.height; context.fillStyle = `rgba(112, 91, 59, ${0.025 + random() * 0.055})`; context.fillRect(x, y, 0.5 + random() * 1.2, 0.5 + random() * 2.5); } const edgeShade = context.createLinearGradient(0, 0, canvas.width, 0); edgeShade.addColorStop(0, "rgba(96,72,42,.2)"); edgeShade.addColorStop(0.08, "rgba(138,112,72,.035)"); edgeShade.addColorStop(0.5, "rgba(255,255,255,.16)"); edgeShade.addColorStop(0.92, "rgba(138,112,72,.035)"); edgeShade.addColorStop(1, "rgba(96,72,42,.18)"); context.fillStyle = edgeShade; context.fillRect(0, 0, canvas.width, canvas.height); const texture = new THREE.CanvasTexture(canvas); texture.colorSpace = THREE.SRGBColorSpace; texture.anisotropy = 8; texture.needsUpdate = true; return texture; } function coverTexture(book: BookLayout, brand: string, face: "cover" | "spine") { if (typeof document === "undefined") return null; const canvas = document.createElement("canvas"); canvas.width = face === "cover" ? 512 : 112; canvas.height = 768; const context = canvas.getContext("2d"); if (!context) return null; context.fillStyle = book.color; context.fillRect(0, 0, canvas.width, canvas.height); addTexture( context, canvas.width, canvas.height, hash(`${book.id}-${face}-noise`), ); drawClothWeave( context, canvas.width, canvas.height, hash(`${book.id}-${face}-weave`), ); context.fillStyle = book.foil; context.strokeStyle = book.foil; context.textBaseline = "top"; context.shadowColor = "rgba(0, 0, 0, .3)"; context.shadowBlur = 1.4; context.shadowOffsetX = 0.8; context.shadowOffsetY = 1.1; if (face === "cover") { const margin = 58; context.font = "500 21px ui-monospace, SFMono-Regular, monospace"; context.fillText(book.date, margin, 58); context.font = "700 54px Georgia, serif"; const words = book.title.split(/\s+/); const lines: string[] = []; let line = ""; for (const word of words) { const next = line ? `${line} ${word}` : word; if (context.measureText(next).width < canvas.width - margin * 2 || !line) line = next; else { lines.push(line); line = word; } } if (line) lines.push(line); lines.slice(0, 5).forEach((text, index) => context.fillText(text, margin, 180 + index * 61)); context.fillRect(margin, 180 + Math.min(lines.length, 5) * 61 + 24, 92, 5); drawMotif(context, book.motif, 316, 510, 130, book.foil); context.font = "700 19px ui-monospace, SFMono-Regular, monospace"; context.fillText(brand.toUpperCase(), margin, 690); } else { const gradient = context.createLinearGradient(0, 0, canvas.width, 0); gradient.addColorStop(0, "rgba(0,0,0,.28)"); gradient.addColorStop(0.18, "rgba(0,0,0,0)"); gradient.addColorStop(0.82, "rgba(0,0,0,0)"); gradient.addColorStop(1, "rgba(0,0,0,.28)"); context.fillStyle = gradient; context.fillRect(0, 0, canvas.width, canvas.height); context.fillStyle = book.foil; context.fillRect(22, 26, canvas.width - 44, 3); context.fillRect(22, 704, canvas.width - 44, 3); context.save(); context.translate(canvas.width / 2, 58); context.rotate(Math.PI / 2); context.font = "700 37px Georgia, serif"; const title = book.title.length > 36 ? `${book.title.slice(0, 34)}…` : book.title; context.fillText(title, 0, 13); context.restore(); drawMotif(context, book.motif, 29, 625, 54, book.foil); } const texture = new THREE.CanvasTexture(canvas); texture.colorSpace = THREE.SRGBColorSpace; texture.anisotropy = 8; texture.needsUpdate = true; return texture; } function damp(current: number, target: number, speed: number, delta: number) { return THREE.MathUtils.lerp(current, target, 1 - Math.exp(-speed * delta)); } const BOOK_ENTER_DURATION = 520; const BOOK_EXIT_DURATION = 400; function bezierCoordinate(t: number, point1: number, point2: number) { const inverse = 1 - t; return ( 3 * inverse * inverse * t * point1 + 3 * inverse * t * t * point2 + t * t * t ); } function easeSmoothOut(progress: number) { let t = progress; for (let iteration = 0; iteration < 5; iteration += 1) { const x = bezierCoordinate(t, 0.22, 0.36); const inverse = 1 - t; const slope = 3 * inverse * inverse * 0.22 + 6 * inverse * t * (0.36 - 0.22) + 3 * t * t * (1 - 0.36); if (Math.abs(slope) < 0.0001) break; t = THREE.MathUtils.clamp(t - (x - progress) / slope, 0, 1); } return bezierCoordinate(t, 1, 1); } function easeInOutCubic(progress: number) { return progress < 0.5 ? 4 * progress * progress * progress : 1 - ((-2 * progress + 2) ** 3) / 2; } function Book({ book, index, hovered, selected, reducedMotion, cameraX, orbit, brand, onHover, onSelect, }: { book: BookLayout; index: number; hovered: boolean; selected: boolean; reducedMotion: boolean; cameraX: React.MutableRefObject; orbit: React.MutableRefObject<{ yaw: number; pitch: number }>; brand: string; onHover: (index: number | null) => void; onSelect: (index: number) => void; }) { const group = useRef(null); const focusFlight = useRef<{ startedAt: number; position: THREE.Vector3; rotation: THREE.Euler; scale: number; } | null>(null); const exitFlight = useRef<{ startedAt: number; position: THREE.Vector3; rotation: THREE.Euler; scale: number; } | null>(null); const selectedAt = useRef(0); const wasSelected = useRef(false); const textures = useMemo( () => ({ cover: coverTexture(book, brand, "cover"), spine: coverTexture(book, brand, "spine"), paper: paperTexture(book), }), [book, brand], ); const geometry = useMemo( () => new RoundedBoxGeometry( book.width, book.bookHeight, book.depth, 2, Math.min(book.width, 0.09), ), [book.bookHeight, book.depth, book.width], ); useEffect(() => { return () => { Object.values(textures).forEach((texture) => texture?.dispose()); geometry.dispose(); }; }, [geometry, textures]); useEffect(() => { const node = group.current; if (selected && node) { selectedAt.current = performance.now(); focusFlight.current = { startedAt: selectedAt.current, position: node.position.clone(), rotation: node.rotation.clone(), scale: node.scale.x, }; exitFlight.current = null; } else if (wasSelected.current && node) { exitFlight.current = { startedAt: performance.now(), position: node.position.clone(), rotation: node.rotation.clone(), scale: node.scale.x, }; focusFlight.current = null; } else { focusFlight.current = null; } wasSelected.current = selected; }, [selected]); useFrame((_, delta) => { const node = group.current; if (!node) return; const motion = reducedMotion ? 1000 : selected ? 7 : 11; const selectedFor = (performance.now() - selectedAt.current) / 1000; const autoYaw = selected && !reducedMotion ? Math.sin(selectedFor * 0.85) * 0.3 : 0; const autoPitch = selected && !reducedMotion ? Math.sin(selectedFor * 0.55) * 0.04 : 0; const targetX = selected ? cameraX.current : book.x; const targetY = selected ? 2.06 : book.bookHeight / 2 + (hovered ? 0.25 : 0); const targetZ = selected ? 1.8 : hovered ? 0.22 : 0; const targetScale = selected ? 0.96 : 1; const targetRotationY = selected ? -Math.PI / 2 + orbit.current.yaw + autoYaw : 0; const targetRotationX = selected ? orbit.current.pitch + autoPitch : 0; const flight = selected ? focusFlight.current : null; if (flight) { const progress = reducedMotion ? 1 : Math.min( 1, (performance.now() - flight.startedAt) / BOOK_ENTER_DURATION, ); const depthProgress = easeSmoothOut(progress); const travelProgress = easeSmoothOut( THREE.MathUtils.clamp((progress - 0.06) / 0.94, 0, 1), ); const turnProgress = easeInOutCubic(progress); const depthArc = Math.sin(Math.PI * progress) * 0.12; node.position.set( THREE.MathUtils.lerp(flight.position.x, targetX, travelProgress), THREE.MathUtils.lerp(flight.position.y, targetY, travelProgress), THREE.MathUtils.lerp(flight.position.z, targetZ, depthProgress) + depthArc, ); node.rotation.x = THREE.MathUtils.lerp( flight.rotation.x, targetRotationX, turnProgress, ); node.rotation.y = THREE.MathUtils.lerp( flight.rotation.y, targetRotationY, turnProgress, ); node.rotation.z = THREE.MathUtils.lerp( flight.rotation.z, 0, turnProgress, ); const scale = THREE.MathUtils.lerp( flight.scale, targetScale, turnProgress, ); node.scale.setScalar(scale); if (progress >= 1) focusFlight.current = null; } else if (!selected && exitFlight.current) { const exit = exitFlight.current; const progress = reducedMotion ? 1 : Math.min( 1, (performance.now() - exit.startedAt) / BOOK_EXIT_DURATION, ); const alignProgress = easeSmoothOut(progress); const slotProgress = easeSmoothOut( THREE.MathUtils.clamp((progress - 0.3) / 0.7, 0, 1), ); node.position.set( THREE.MathUtils.lerp(exit.position.x, book.x, alignProgress), THREE.MathUtils.lerp( exit.position.y, book.bookHeight / 2, alignProgress, ), THREE.MathUtils.lerp(exit.position.z, 0, slotProgress), ); node.rotation.x = THREE.MathUtils.lerp( exit.rotation.x, 0, alignProgress, ); node.rotation.y = THREE.MathUtils.lerp( exit.rotation.y, 0, alignProgress, ); node.rotation.z = THREE.MathUtils.lerp( exit.rotation.z, 0, alignProgress, ); const scale = THREE.MathUtils.lerp(exit.scale, 1, alignProgress); node.scale.setScalar(scale); if (progress >= 1) exitFlight.current = null; } else { node.position.x = damp(node.position.x, targetX, motion, delta); node.position.y = damp(node.position.y, targetY, motion, delta); node.position.z = damp(node.position.z, targetZ, motion, delta); node.rotation.y = damp(node.rotation.y, targetRotationY, motion, delta); node.rotation.x = damp(node.rotation.x, targetRotationX, motion, delta); const nextScale = damp(node.scale.x, targetScale, motion, delta); node.scale.setScalar(nextScale); } }); const select = (event: ThreeEvent) => { event.stopPropagation(); onSelect(index); }; return ( { event.stopPropagation(); onHover(index); document.body.style.cursor = "pointer"; }} onPointerLeave={() => { onHover(null); document.body.style.cursor = ""; }} onClick={select} > ); } function CameraRig({ target }: { target: React.MutableRefObject }) { const { camera } = useThree(); useFrame((_, delta) => { camera.position.x = damp(camera.position.x, target.current, 8, delta); camera.lookAt(camera.position.x, 1.88, 0); }); return null; } function Scene({ books, hoveredIndex, selectedIndex, reducedMotion, cameraX, orbit, brand, onHover, onSelect, }: { books: BookLayout[]; hoveredIndex: number | null; selectedIndex: number | null; reducedMotion: boolean; cameraX: React.MutableRefObject; orbit: React.MutableRefObject<{ yaw: number; pitch: number }>; brand: string; onHover: (index: number | null) => void; onSelect: (index: number) => void; }) { return ( <> {books.map((book, index) => ( ))} ); } function nearestBook(books: BookLayout[], x: number) { let nearest = 0; let distance = Number.POSITIVE_INFINITY; books.forEach((book, index) => { const next = Math.abs(book.x - x); if (next < distance) { nearest = index; distance = next; } }); return nearest; } export function NewsletterBookshelf({ items = defaultNewsletterBooks, className, height = 620, brand = "The Brief", onSelect, }: NewsletterBookshelfProps) { const books = useMemo( () => deriveLayout(items.length ? items : defaultNewsletterBooks), [items], ); const [hoveredIndex, setHoveredIndex] = useState(null); const [selectedIndex, setSelectedIndex] = useState(null); const [currentIndex, setCurrentIndex] = useState(0); const [reducedMotion, setReducedMotion] = useState(false); const [stageWidth, setStageWidth] = useState(1000); const stageRef = useRef(null); const tooltipRef = useRef(null); const cameraX = useRef(0); const orbit = useRef({ yaw: 0, pitch: 0 }); const gesture = useRef<{ mode: "pending" | "drag" | "orbit"; x: number; y: number; startX: number; startedAt: number; } | null>(null); const switchTimer = useRef(null); const pendingSelection = useRef(null); const suppressClick = useRef(false); const getBounds = useCallback(() => { const last = books.at(-1)?.x ?? 0; const aspect = stageWidth / Math.max(420, typeof height === "number" ? height : 620); const visibleSpan = 2 * 10 * Math.tan((35 * Math.PI) / 360) * aspect; const inset = visibleSpan * 0.31; const min = Math.min(last / 2, (books[0]?.x ?? 0) + inset); const max = Math.max(last / 2, last - inset); return max <= min ? { min: last / 2, max: last / 2, visibleSpan } : { min, max, visibleSpan }; }, [books, height, stageWidth]); const moveCamera = useCallback( (next: number) => { const bounds = getBounds(); cameraX.current = THREE.MathUtils.clamp(next, bounds.min, bounds.max); setCurrentIndex(nearestBook(books, cameraX.current)); }, [books, getBounds], ); useEffect(() => { const motion = window.matchMedia("(prefers-reduced-motion: reduce)"); const update = () => setReducedMotion(motion.matches); update(); motion.addEventListener?.("change", update); const stage = stageRef.current; if (!stage) return () => motion.removeEventListener?.("change", update); const resize = new ResizeObserver(([entry]) => { if (entry) setStageWidth(entry.contentRect.width); }); resize.observe(stage); return () => { resize.disconnect(); motion.removeEventListener?.("change", update); }; }, []); useEffect(() => { const bounds = getBounds(); cameraX.current = bounds.min; setCurrentIndex(nearestBook(books, bounds.min)); }, [books, getBounds]); useEffect( () => () => { if (switchTimer.current !== null) window.clearTimeout(switchTimer.current); document.body.style.cursor = ""; }, [], ); const presentBook = useCallback( (index: number) => { moveCamera(books[index]!.x); orbit.current = { yaw: 0, pitch: 0 }; setHoveredIndex(null); setSelectedIndex(index); onSelect?.(books[index]!, index); }, [books, moveCamera, onSelect], ); const openBook = useCallback( (index: number) => { const href = books[index]?.href; if (!href || typeof window === "undefined") return; try { const destination = new URL(href, window.location.href); if (destination.protocol !== "http:" && destination.protocol !== "https:") return; window.location.assign(destination.href); } catch { // Ignore malformed or unsupported destinations supplied by consumers. } }, [books], ); const selectBook = useCallback( (index: number) => { if (suppressClick.current) return; if (selectedIndex === index) { openBook(index); return; } if (selectedIndex !== null) { pendingSelection.current = index; moveCamera(books[index]!.x); setHoveredIndex(null); setSelectedIndex(null); orbit.current = { yaw: 0, pitch: 0 }; if (switchTimer.current !== null) window.clearTimeout(switchTimer.current); switchTimer.current = window.setTimeout(() => { const next = pendingSelection.current; pendingSelection.current = null; switchTimer.current = null; if (next !== null) presentBook(next); }, reducedMotion ? 0 : BOOK_EXIT_DURATION); return; } if (switchTimer.current !== null) { pendingSelection.current = index; return; } presentBook(index); }, [books, moveCamera, openBook, presentBook, reducedMotion, selectedIndex], ); const close = useCallback(() => { setSelectedIndex(null); orbit.current = { yaw: 0, pitch: 0 }; stageRef.current?.focus({ preventScroll: true }); }, []); const switchFocused = useCallback( (direction: number) => { if (selectedIndex === null) return; const next = THREE.MathUtils.clamp(selectedIndex + direction, 0, books.length - 1); if (next !== selectedIndex) { selectBook(next); } }, [books.length, selectBook, selectedIndex], ); const pointerDown = (event: ReactPointerEvent) => { if ((event.target as HTMLElement).closest("button, a")) return; gesture.current = { mode: "pending", x: event.clientX, y: event.clientY, startX: event.clientX, startedAt: performance.now(), }; }; const pointerMove = (event: ReactPointerEvent) => { const rect = stageRef.current?.getBoundingClientRect(); if (tooltipRef.current && rect) { tooltipRef.current.style.left = `${event.clientX - rect.left}px`; tooltipRef.current.style.top = `${event.clientY - rect.top}px`; } const active = gesture.current; if (!active) return; const dx = event.clientX - active.x; const dy = event.clientY - active.y; if (active.mode === "pending" && Math.hypot(event.clientX - active.startX, dy) > 7) { active.mode = selectedIndex === null ? "drag" : "orbit"; suppressClick.current = true; stageRef.current?.setPointerCapture(event.pointerId); setHoveredIndex(null); } if (active.mode === "drag") { moveCamera(cameraX.current - dx * 0.0085); } else if (active.mode === "orbit") { orbit.current.yaw = THREE.MathUtils.clamp(orbit.current.yaw + dx * 0.006, -0.62, 0.62); orbit.current.pitch = THREE.MathUtils.clamp(orbit.current.pitch + dy * 0.004, -0.28, 0.28); } active.x = event.clientX; active.y = event.clientY; }; const pointerUp = (event: ReactPointerEvent) => { if (stageRef.current?.hasPointerCapture(event.pointerId)) { stageRef.current.releasePointerCapture(event.pointerId); } gesture.current = null; window.requestAnimationFrame(() => { suppressClick.current = false; }); }; const selectedBook = selectedIndex === null ? null : books[selectedIndex]; const hovered = hoveredIndex === null ? null : books[hoveredIndex]; const bounds = getBounds(); return (

{ gesture.current = null; setHoveredIndex(null); }} onWheel={(event) => { if (selectedIndex !== null) return; const horizontal = Math.abs(event.deltaX) > Math.abs(event.deltaY); if (horizontal || event.shiftKey) { event.preventDefault(); moveCamera(cameraX.current + (horizontal ? event.deltaX : event.deltaY) * 0.012); } }} onKeyDown={(event) => { if (event.key === "Escape" && selectedIndex !== null) { event.preventDefault(); close(); } else if (event.key === "ArrowRight") { event.preventDefault(); if (selectedIndex !== null) switchFocused(1); else moveCamera(cameraX.current + bounds.visibleSpan * 0.23); } else if (event.key === "ArrowLeft") { event.preventDefault(); if (selectedIndex !== null) switchFocused(-1); else moveCamera(cameraX.current - bounds.visibleSpan * 0.23); } else if (event.key === "Enter" || event.key === " ") { event.preventDefault(); if (selectedIndex === null) selectBook(currentIndex); else openBook(selectedIndex); } }} >

{hovered?.title} {hovered?.date}

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