"use client"; import { loadFont } from "@remotion/google-fonts/HubotSans"; import { useEffect, useRef, useState } from "react"; import { AbsoluteFill, continueRender, delayRender, Easing, interpolate, interpolateColors, useCurrentFrame, useVideoConfig, } from "remotion"; const hubot = loadFont("normal", { weights: ["400", "500"], subsets: ["latin"], }); export interface ExactlyRound { objection: string; reply: string; } export interface ExactlyProps { rounds?: ExactlyRound[]; accent?: string; background?: string; speed?: number; theme?: "dark" | "light"; } const DEFAULT_ROUNDS: ExactlyRound[] = [ { objection: "There’s nothing to click.", reply: "Good." }, { objection: "It’s just code.", reply: "Exactly." }, ]; const THEMES = { dark: { bg: "#1C1C1E", ink: "#FFFFFF", muted: "#9E9EA3", accent: "#FFE14D", }, light: { bg: "#FFFBEA", ink: "#17150F", muted: "#7A7363", accent: "#9A7A00", }, } as const; const TRACK = -0.03; const LH = 1.06; const WORD = 3; const RISE = 13; const DROP = 14; const REFLOW = 20; const EXIT = 12; const EASE_OUT = Easing.bezier(0.22, 1, 0.36, 1); const EASE_IO = Easing.bezier(0.65, 0, 0.35, 1); const EASE_IN = Easing.bezier(0.55, 0, 0.85, 0.35); const CLAMP = { extrapolateLeft: "clamp", extrapolateRight: "clamp", } as const; function breakLines(ws: number[], space: number, maxEm: number) { const n = ws.length; if (n === 0) return [] as number[][]; let count = 1; let x = 0; for (let i = 0; i < n; i++) { if (x > 0 && x + space + ws[i] > maxEm) { count++; x = ws[i]; } else { x += (x > 0 ? space : 0) + ws[i]; } } if (count === 1) return [ws.map((_, i) => i)]; const lineW = (i: number, j: number) => { let s = 0; for (let k = i; k < j; k++) s += ws[k] + (k > i ? space : 0); return s; }; const avg = lineW(0, n) / count; const INF = 1e12; const dp = Array.from({ length: count + 1 }, () => new Array(n + 1).fill(INF), ); const back = Array.from({ length: count + 1 }, () => new Array(n + 1).fill(0), ); dp[0][0] = 0; for (let l = 1; l <= count; l++) { for (let j = 1; j <= n; j++) { for (let i = l - 1; i < j; i++) { if (dp[l - 1][i] >= INF) continue; const lw = lineW(i, j); if (lw > maxEm + 1e-6 && j - i > 1) continue; const cost = (lw - avg) ** 2; if (dp[l - 1][i] + cost < dp[l][j]) { dp[l][j] = dp[l - 1][i] + cost; back[l][j] = i; } } } } if (dp[count][n] >= INF) return [ws.map((_, i) => i)]; const starts: number[] = []; let j = n; for (let l = count; l > 0; l--) { const i = back[l][j]; starts.unshift(i); j = i; } return starts.map((s, l) => { const e = l + 1 < starts.length ? starts[l + 1] : n; return Array.from({ length: e - s }, (_, k) => s + k); }); } function useWidths(specs: string[]) { const key = specs.join("\u0001"); const [state, setState] = useState<{ key: string; w: Record; } | null>(null); const [handle] = useState(() => delayRender("exactly: measuring")); const released = useRef(false); const ref = useRef(specs); ref.current = specs; useEffect(() => { let live = true; Promise.all([ hubot.waitUntilDone(), document.fonts.load(`400 100px "${hubot.fontFamily}"`), document.fonts.load(`500 100px "${hubot.fontFamily}"`), ]) .catch(() => undefined) .then(() => { if (!live) return; const ctx = document.createElement("canvas").getContext("2d"); const w: Record = {}; for (const spec of ref.current) { const cut = spec.indexOf("|"); const weight = spec.slice(0, cut); const text = spec.slice(cut + 1); if (ctx) ctx.font = `${weight} 100px "${hubot.fontFamily}"`; w[spec] = ctx ? ctx.measureText(text).width / 100 : text.length * 0.5; } setState({ key, w }); if (!released.current) { released.current = true; continueRender(handle); } }); return () => { live = false; }; }, [key, handle]); return state && state.key === key ? state.w : null; } interface Placed { x: number; y: number; } function centred(ws: number[], space: number, maxEm: number) { const lines = breakLines(ws, space, maxEm); const placed: Placed[] = new Array(ws.length); let widest = 0; const lineWidths: number[] = []; lines.forEach((idx, line) => { let lw = 0; idx.forEach((k, m) => { lw += ws[k] + (m > 0 ? space : 0); }); lineWidths.push(lw); widest = Math.max(widest, lw); let x = -lw / 2; idx.forEach((k, m) => { if (m > 0) x += space; placed[k] = { x, y: line }; x += ws[k]; }); }); return { placed, lines: lines.length, widest, lineWidths }; } export function Exactly({ rounds = DEFAULT_ROUNDS, accent, background, speed = 1, theme = "dark", }: ExactlyProps) { const t = useCurrentFrame() * speed; const { width: W, height: H, durationInFrames: T } = useVideoConfig(); const c = THEMES[theme]; const hi = accent ?? c.accent; const stage = background === "transparent" ? "transparent" : (background ?? c.bg); const list = rounds.length > 0 ? rounds : DEFAULT_ROUNDS; const objs = list.map((r) => r.objection.trim().split(/\s+/)); const replies = list.map((r) => r.reply.trim()); const specs = Array.from( new Set([ "500| ", "500|“", "500|”", ...objs.flat().map((s) => `500|${s}`), ...replies.map((s) => `500|${s}`), ]), ); const w = useWidths(specs); if (!w) { return (

); } const adv = (s: string) => (w[`500|${s}`] ?? 0) + TRACK * Array.from(s).length; const space = (w["500| "] ?? 0.25) + 0.04; const openW = adv("“"); const closeW = adv("”"); const portrait = H > W * 1.1; const maxW = W * 0.84; const maxLines = portrait ? 5 : 2; const maxH = H * (portrait ? 0.46 : 0.5); const build = (F: number) => list.map((_, i) => { const ows = objs[i].map(adv); const rw = adv(replies[i]); const full = maxW / F; const inline = full - rw - space; const own = inline < Math.max(...ows) * 1.15; const a = centred(ows, space, own ? full - openW - closeW : inline); const shift = own ? 0 : (rw + space) / 2; const b = a.placed.map((p) => ({ x: p.y === 0 ? p.x + shift : p.x, y: own ? p.y + 1 : p.y, })); const replyX = own ? -rw / 2 : -(a.lineWidths[0] + rw + space) / 2; const bLines = own ? a.lines + 1 : a.lines; const bWidest = own ? Math.max(a.widest, rw) : Math.max(a.widest, a.lineWidths[0] + rw + space); return { a, b, own, replyX, bLines, bWidest }; }); let F = portrait ? W * 0.13 : H * 0.15; let lays = build(F); for (let k = 0; k < 80; k++) { const ok = lays.every( (l) => l.bLines <= maxLines && (l.a.widest + openW + closeW) * F <= maxW + 0.5 && l.bWidest * F <= maxW + 0.5 && l.bLines * LH * F <= maxH, ); if (ok) break; F *= 0.97; lays = build(F); } const lineH = LH * F; const startAt: number[] = []; const dropAt: number[] = []; let clock = 4; list.forEach((_, i) => { startAt.push(clock); clock += objs[i].length * WORD + RISE + 16; dropAt.push(clock); clock += 6 + REFLOW; clock += i < list.length - 1 ? 30 : 0; }); const room = Math.max(1, T - Math.max(30, T * 0.2)); const k = clock > room ? room / clock : 1; const textStyle = (size: number) => ({ position: "absolute" as const, fontSize: size, lineHeight: `${lineH}px`, letterSpacing: `${TRACK}em`, whiteSpace: "pre" as const, }); return ( {list.map((_, i) => { const last = i === list.length - 1; const leaveAt = last ? 1e9 : startAt[i + 1] * k - 4; const leave = interpolate(t, [leaveAt, leaveAt + EXIT], [0, 1], { ...CLAMP, easing: EASE_IN, }); if (t < startAt[i] * k - 1 || leave >= 1) return null; const { a, b, own, replyX, bLines } = lays[i]; const ayTop = H / 2 - (a.lines * lineH) / 2; const byTop = H / 2 - (bLines * lineH) / 2; const cx = W / 2; const d0 = dropAt[i] * k; const drop = interpolate(t, [d0, d0 + DROP * k], [0, 1], { ...CLAMP, easing: EASE_IN, }); const r0 = (dropAt[i] + 6) * k; const flow = interpolate(t, [r0, r0 + REFLOW * k], [0, 1], { ...CLAMP, easing: EASE_IO, }); const words = objs[i]; const n = words.length; const lagOf = (j: number) => Math.min( 1, Math.max(0, flow * 1.15 - ((n - 1 - j) / Math.max(1, n)) * 0.15), ); const posOf = (j: number) => { const l = lagOf(j); const pa = a.placed[j]; const pb = b[j]; return { x: cx + (pa.x + (pb.x - pa.x) * l) * F, y: ayTop + pa.y * lineH + (byTop + pb.y * lineH - (ayTop + pa.y * lineH)) * l, }; }; const inAt = (j: number) => interpolate( t, [(startAt[i] + j * WORD) * k, (startAt[i] + j * WORD + RISE) * k], [0, 1], { ...CLAMP, easing: EASE_OUT }, ); const first = posOf(0); const lastPos = posOf(n - 1); const replyIn = interpolate(flow, [0.35, 0.9], [0, 1], CLAMP); const reply = own ? { x: cx + replyX * F, y: byTop - (1 - replyIn) * F * 0.2, } : { x: first.x - (space + adv(replies[i])) * F, y: first.y, }; const quote = (x: number, y: number, appear: number) => ({ ...textStyle(F), left: x, top: y, color: c.muted, opacity: appear * Math.max(0, 1 - drop * 1.6), transform: `translateY(${((1 - appear) * F * 0.18 + drop * F * 0.45).toFixed(2)}px)`, }); return (

“

”

{replies[i]}

{words.map((word, j) => { const e = inAt(j); const p = posOf(j); return (

{word}

); })}

); })} ); }