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* 词云隧道 — 经典 3D 星空隧道布局\n *\n * xy：环外随机 + 最小间距拒绝采样\n * z：只沿深度飞，perspective 汇向灭点\n * 词数：1440→80、1920→120、2560→160\n */\n\nexport type TunnelWord = {\n label: string\n x: string\n y: string\n z0: number\n z1: number\n opacity: number\n duration: number\n delay: number\n}\n\n/** 默认搞笑词条（可被 props.words 覆盖） */\nexport const DEFAULT_WORDS = [\n '我本地是好的',\n '先上线再说',\n '这不是 bug',\n '是 feature',\n '需求又改了',\n '估计半小时',\n '今天不加班',\n '已读不回',\n '在吗急',\n '线上炸了',\n '回滚回滚',\n '能跑就行',\n 'LGTM',\n '先 merge',\n '文档？不存在',\n '临时方案永久用',\n '谁写的破代码',\n '哦是我写的',\n '只有上帝懂了',\n '神秘空指针',\n '依赖地狱',\n '周五上线快乐',\n '产品说随便改改',\n '后端说前端的锅',\n '前端说后端的锅',\n '测过了吗',\n '没测但感觉没问题',\n '复制粘贴工程师',\n 'Ctrl+C Ctrl+V',\n '热更新一下',\n '没事没事',\n '绝对没问题',\n '大概也许可能',\n '重构？下次一定',\n '注释写给鬼看的',\n 'npm install 三小时',\n '冲突自己解决',\n '下班了吗',\n '有空帮看下',\n '又是一个小需求',\n] as const\n\nexport const DEFAULTS = {\n seed: 20250913,\n perspective: 900,\n /** 中心空洞半径（越小词越靠近灭点） */\n innerRadius: 8,\n /** 外圈采样半径 */\n outerRadius: 52,\n /** z 轴最短飞行距离 */\n travelMin: 480,\n /** z 轴额外随机飞行距离 */\n travelRange: 560,\n /** 淡入完成进度 0–100 */\n fadeIn: 10,\n /** 开始淡出进度 0–100（越大越晚消失、越贴中心） */\n fadeOut: 88,\n} as const\n\nexport type WordTunnelLayout = {\n innerRadius: number\n outerRadius: number\n travelMin: number\n travelRange: number\n}\n\nfunction mulberry32(seed: number) {\n return () => {\n let t = (seed += 0x6d2b79f5)\n t = Math.imul(t ^ (t >>> 15), t | 1)\n t ^= t + Math.imul(t ^ (t >>> 7), t | 61)\n return ((t ^ (t >>> 14)) >>> 0) / 4294967296\n }\n}\n\ntype Placed = { px: number; py: number; nearness: number; weight: number }\n\n/** 1440→80、1920→120、2560→160；每约 480px 一档 +40 */\nexport function wordCountForWidth(width: number): number {\n const steps = Math.round((width - 1440) / 480)\n return Math.min(280, Math.max(40, 80 + steps * 40))\n}\n\nfunction baseMinDistance(\n count: number,\n innerRadius: number,\n outerRadius: number,\n): number {\n const area =\n Math.PI * (outerRadius * 1.12) ** 2 - Math.PI * innerRadius ** 2\n return Math.min(13, Math.max(5.5, Math.sqrt(Math.max(area, 1) / count) * 0.92))\n}\n\nfunction tooClose(a: Placed, b: Placed, baseMin: number): boolean {\n const scale = 0.65 + 0.55 * ((a.nearness + b.nearness) / 2)\n const weight = (a.weight + b.weight) / 2\n const min = baseMin * scale * weight\n const dx = a.px - b.px\n const dy = a.py - b.py\n return dx * dx + dy * dy < min * min\n}\n\nfunction samplePoint(\n rnd: () => number,\n innerRadius: number,\n outerRadius: number,\n): { px: number; py: number } {\n const span = Math.max(0.01, outerRadius - innerRadius)\n for (let tryN = 0; tryN < 32; tryN++) {\n const angle = rnd() * Math.PI * 2\n const r = innerRadius + Math.sqrt(rnd()) * span\n const px = Math.cos(angle) * r * 1.18\n const py = Math.sin(angle) * r * 0.9\n if (Math.hypot(px, py) >= innerRadius) return { px, py }\n }\n return { px: innerRadius * 1.2, py: 0 }\n}\n\nfunction labelWeight(label: string): number {\n const len = [...label].length\n return Math.min(1.35, Math.max(0.9, 0.85 + len * 0.035))\n}\n\nfunction clampPct(n: number): number {\n return Math.min(99, Math.max(1, Math.round(n)))\n}\n\n/** 生成可配置淡入淡出的 keyframes CSS */\nexport function buildConvergeKeyframes(\n name: string,\n fadeIn: number = DEFAULTS.fadeIn,\n fadeOut: number = DEFAULTS.fadeOut,\n): string {\n let inn = clampPct(fadeIn)\n let out = clampPct(fadeOut)\n if (out <= inn) out = Math.min(99, inn + 1)\n\n return `@keyframes ${name} {\n 0% {\n opacity: 0;\n transform: translate3d(\n calc(-50% + var(--fx-wt-x)),\n calc(-50% + var(--fx-wt-y)),\n var(--fx-wt-z0)\n );\n }\n ${inn}% {\n opacity: var(--fx-wt-op);\n }\n ${out}% {\n opacity: calc(var(--fx-wt-op) * 0.7);\n }\n 100% {\n opacity: 0;\n transform: translate3d(\n calc(-50% + var(--fx-wt-x)),\n calc(-50% + var(--fx-wt-y)),\n var(--fx-wt-z1)\n );\n }\n}`\n}\n\nexport type BuildWordsOptions = {\n count?: number\n seed?: number\n words?: readonly string[]\n innerRadius?: number\n outerRadius?: number\n travelMin?: number\n travelRange?: number\n}\n\nexport function buildWords(options: BuildWordsOptions = {}): TunnelWord[] {\n const words = options.words?.length ? options.words : DEFAULT_WORDS\n const count = options.count ?? 80\n const seed = options.seed ?? DEFAULTS.seed\n const innerRadius = options.innerRadius ?? DEFAULTS.innerRadius\n const outerRadius = Math.max(\n innerRadius + 1,\n options.outerRadius ?? DEFAULTS.outerRadius,\n )\n const travelMin = options.travelMin ?? DEFAULTS.travelMin\n const travelRange = Math.max(0, options.travelRange ?? DEFAULTS.travelRange)\n\n const rnd = mulberry32(seed + count * 997)\n const list: TunnelWord[] = []\n const placed: Placed[] = []\n const baseMin = baseMinDistance(count, innerRadius, outerRadius)\n\n for (let i = 0; i < count; i++) {\n const label = words[Math.floor(rnd() * words.length)]!\n const weight = labelWeight(label)\n\n const z0 = Math.round(-80 + rnd() * 280)\n const nearness = Math.min(1, Math.max(0, (z0 + 80) / 280))\n\n let px = 0\n let py = 0\n let ok = false\n\n for (let relax = 0; relax < 6 && !ok; relax++) {\n const minFactor = 1 - relax * 0.12\n const tries = 40 + relax * 20\n for (let t = 0; t < tries; t++) {\n const p = samplePoint(rnd, innerRadius, outerRadius)\n const candidate: Placed = { px: p.px, py: p.py, nearness, weight }\n if (\n placed.every((o) => !tooClose(candidate, o, baseMin * minFactor))\n ) {\n px = p.px\n py = p.py\n ok = true\n break\n }\n }\n }\n\n if (!ok) {\n const p = samplePoint(rnd, innerRadius, outerRadius)\n px = p.px\n py = p.py\n }\n\n placed.push({ px, py, nearness, weight })\n\n const travel = travelMin + rnd() * travelRange\n const z1 = Math.round(z0 - travel)\n const opacity =\n Math.round((0.18 + nearness * 0.72 + rnd() * 0.08) * 100) / 100\n const duration =\n Math.round((5.5 + (1 - nearness) * 6 + rnd() * 5) * 100) / 100\n const delay = Math.round(-rnd() * duration * 100) / 100\n\n list.push({\n label,\n x: `${Math.round(px * 100) / 100}vw`,\n y: `${Math.round(py * 100) / 100}vh`,\n z0,\n z1,\n opacity,\n duration,\n delay,\n })\n }\n\n return list\n}\n","'use client'\n\nimport {\n useEffect,\n useId,\n useMemo,\n useState,\n type CSSProperties,\n type ReactNode,\n} from 'react'\nimport {\n DEFAULTS,\n buildConvergeKeyframes,\n buildWords,\n wordCountForWidth,\n type TunnelWord,\n} from '../core/keywords'\nimport '../core/styles.css'\n\nexport type WordTunnelProps = {\n /** 词条列表；不传则用内置搞笑默认词。 */\n words?: readonly string[]\n /** 固定词数；不传则按视口宽度自适应。 */\n count?: number\n /** 布局随机种子：同值可复现，换值换分布。默认 `20250913`。 */\n seed?: number\n /** CSS perspective，默认 900。 */\n perspective?: number\n /** 中心空洞半径，越小词越靠近灭点。默认 8。 */\n innerRadius?: number\n /** 外圈采样半径。默认 52。 */\n outerRadius?: number\n /** z 轴最短飞行距离，越大消隐越靠近中心。默认 480。 */\n travelMin?: number\n /** z 轴额外随机飞行距离。默认 560。 */\n travelRange?: number\n /** 淡入完成进度 0–100。默认 10。 */\n fadeIn?: number\n /** 开始淡出进度 0–100，越大越晚消失。默认 88。 */\n fadeOut?: number\n /** 文字颜色。 */\n color?: string\n /** 字号，默认 24px。 */\n fontSize?: number | string\n className?: string\n style?: CSSProperties\n children?: ReactNode\n ariaHidden?: boolean\n}\n\nexport function WordTunnel({\n words,\n count,\n seed = DEFAULTS.seed,\n perspective = DEFAULTS.perspective,\n innerRadius = DEFAULTS.innerRadius,\n outerRadius = DEFAULTS.outerRadius,\n travelMin = DEFAULTS.travelMin,\n travelRange = DEFAULTS.travelRange,\n fadeIn = DEFAULTS.fadeIn,\n fadeOut = DEFAULTS.fadeOut,\n color,\n fontSize,\n className,\n style,\n children,\n ariaHidden = true,\n}: WordTunnelProps) {\n const uid = useId().replace(/:/g, '')\n const animName = `fx-wt-converge-${uid}`\n\n const layout = useMemo(\n () => ({\n seed,\n words,\n innerRadius,\n outerRadius,\n travelMin,\n travelRange,\n }),\n [seed, words, innerRadius, outerRadius, travelMin, travelRange],\n )\n\n const [items, setItems] = useState(() =>\n buildWords({\n count: count ?? 80,\n ...layout,\n }),\n )\n\n useEffect(() => {\n function rebuild() {\n const nextCount = count ?? wordCountForWidth(window.innerWidth)\n setItems(buildWords({ count: nextCount, ...layout }))\n }\n\n rebuild()\n\n if (count != null) return\n\n let timer: ReturnType | undefined\n function onResize() {\n if (timer) clearTimeout(timer)\n timer = setTimeout(rebuild, 150)\n }\n\n window.addEventListener('resize', onResize)\n return () => {\n if (timer) clearTimeout(timer)\n window.removeEventListener('resize', onResize)\n }\n }, [count, layout])\n\n const keyframesCss = useMemo(\n () => buildConvergeKeyframes(animName, fadeIn, fadeOut),\n [animName, fadeIn, fadeOut],\n )\n\n const rootStyle: CSSProperties = {\n ...style,\n ['--fx-wt-perspective' as string]: `${perspective}px`,\n ['--fx-wt-anim' as string]: animName,\n ...(color ? { ['--fx-wt-color' as string]: color } : null),\n ...(fontSize != null\n ? {\n ['--fx-wt-font-size' as string]:\n typeof fontSize === 'number' ? `${fontSize}px` : fontSize,\n }\n : null),\n }\n\n return (\n
\n \n
\n
\n {items.map((item, i) => (\n \n {item.label}\n \n ))}\n
\n
\n {children != null ?
{children}
: null}\n
\n )\n}\n\nexport default WordTunnel\n"]}