Quarterly planning notes

Ship by Friday?

Needs a second pass

Move your cursor in to pause them.

); } ``` ## Accessibility & performance Honors `prefers-reduced-motion` with a designed static frame or fade (never a blank box) and passes `className` through. ## Source (`cohort.tsx`) ```tsx "use client"; import * as React from "react"; import { motion, motionValue, useSpring, type MotionValue } from "motion/react"; import { cn } from "@/lib/utils"; import { useReducedMotion } from "@/hooks/use-reduced-motion"; import { useVisibilityPause } from "@/hooks/use-visibility-pause"; /** A point in percent of the container: `[x%, y%]`. */ export type CohortPoint = readonly [x: number, y: number]; /** A rectangle in percent of the container: `[x%, y%, width%, height%]`. */ export type CohortRect = readonly [x: number, y: number, width: number, height: number]; /** * Where a step points. Either percent coordinates, or a string: a bare name * (`"title"`) resolves to `[data-cohort="title"]` inside the children; anything * else is used as a CSS selector scoped to the children. Unresolvable targets * fall back to the container centre. */ export type CohortTarget = string | CohortPoint | CohortRect; /** One step of a cursor's script. Durations are in ms (before `speedScale`). */ export type CohortStep = | { /** Glide to a target along a curved, slightly overshooting path. */ type: "move"; to: CohortTarget; /** Point within an element/rect target, as fractions `[0..1, 0..1]`. @default [0.5, 0.5] */ anchor?: CohortPoint; /** Travel time. @default derived from distance (~500–1500ms) */ duration?: number; } | { /** Press: the pointer dips and a ripple rings out in the cursor's color. */ type: "click"; } | { /** Travel to the target's top-left, then drag a translucent selection over it. */ type: "select"; target: string | CohortRect; /** Drag time. @default 700 */ duration?: number; } | { /** A comment bubble beside the name pill types out `text`. */ type: "type"; text: string; /** Typing time. @default 55ms per character */ duration?: number; /** How long the finished comment stays before the next step. @default 900 */ hold?: number; } | { /** An emoji floats up from the pointer and fades. */ type: "react"; emoji: string; } | { /** Idle in place (with a subtle drift). */ type: "wait"; /** @default 900 */ duration?: number; }; /** One scripted collaborator. */ export interface CohortCursor { /** Label shown in the name pill. */ name: string; /** Pointer, pill, selection and ripple color (any CSS color). */ color: string; /** Steps acted out in order; runs concurrently with the other cursors. */ script: CohortStep[]; } /** Imperative controls exposed via `ref`. */ export interface CohortHandle { /** Clear every selection/comment and replay all scripts from the intro. */ restart: () => void; } export interface CohortProps extends Omit, "children"> { /** The content the cursors perform over. Tag targets with `data-cohort="name"`. */ children?: React.ReactNode; /** The scripted collaborators (2–4 reads best). @default three cursors on a percent-based script */ cursors?: CohortCursor[]; /** Restart each script when it ends. @default true */ loop?: boolean; /** Playback rate of every script. @default 1 */ speedScale?: number; /** When the visitor's pointer enters, cursors finish their step then idle; they resume 1.5s after it leaves. @default true */ pauseOnPointer?: boolean; /** Freeze the scripts where they are. @default false */ paused?: boolean; /** Imperative handle — `restart()`. */ ref?: React.Ref; } const DEFAULT_CURSORS: CohortCursor[] = [ { name: "Mara", color: "#a5b4fc", script: [ { type: "move", to: [30, 28] }, { type: "wait", duration: 400 }, { type: "select", target: [16, 20, 42, 14] }, { type: "type", text: "Tighten this intro?" }, { type: "move", to: [66, 64] }, { type: "click" }, { type: "react", emoji: "👍" }, { type: "wait", duration: 1100 }, ], }, { name: "Jun", color: "#f9a8d4", script: [ { type: "wait", duration: 600 }, { type: "move", to: [72, 30] }, { type: "click" }, { type: "wait", duration: 500 }, { type: "move", to: [52, 72] }, { type: "type", text: "Love this part" }, { type: "react", emoji: "✨" }, { type: "move", to: [38, 82] }, { type: "wait", duration: 900 }, ], }, { name: "Ola", color: "#6ee7b7", script: [ { type: "wait", duration: 1200 }, { type: "move", to: [36, 62] }, { type: "react", emoji: "🎉" }, { type: "wait", duration: 700 }, { type: "select", target: [56, 42, 30, 16] }, { type: "wait", duration: 900 }, { type: "move", to: [78, 78] }, { type: "click" }, { type: "wait", duration: 1200 }, ], }, ]; const INTRO_STAGGER = 0.35; // s between cursors fading in const INTRO_FADE = 0.45; // s const RESUME_DELAY = 1.5; // s after the real pointer leaves const CLICK_MS = 320; const PILL_SPRING = { stiffness: 170, damping: 22, mass: 0.9 }; // Underdamped spring step response (ζ≈0.68 → ~5% overshoot), normalized to s∈[0,1]. const ZETA = 0.68; const OMEGA = 10; const OMEGA_D = OMEGA * Math.sqrt(1 - ZETA * ZETA); function springEase(s: number) { if (s >= 1) return 1; const e = Math.exp(-ZETA * OMEGA * s); return 1 - e * (Math.cos(OMEGA_D * s) + ((ZETA * OMEGA) / OMEGA_D) * Math.sin(OMEGA_D * s)); } const easeInOut = (s: number) => (s < 0.5 ? 2 * s * s : 1 - Math.pow(-2 * s + 2, 2) / 2); const clamp = (v: number, lo: number, hi: number) => Math.min(hi, Math.max(lo, v)); /** Pill text color: white on dark hex fills, near-black otherwise (non-hex colors keep the dark default). */ function inkOn(color: string) { const m = /^#?([0-9a-f]{3}|[0-9a-f]{6})$/i.exec(color.trim()); if (!m) return "#0a0a0a"; const h = m[1].length === 3 ? [...m[1]].map((c) => c + c).join("") : m[1]; const [r, g, b] = [0, 2, 4].map((i) => { const c = parseInt(h.slice(i, i + 2), 16) / 255; return c <= 0.03928 ? c / 12.92 : ((c + 0.055) / 1.055) ** 2.4; }); const lum = 0.2126 * r + 0.7152 * g + 0.0722 * b; // Contrast vs white (1.05/(L+0.05)) beats contrast vs near-black ((L+0.05)/0.05) below L≈0.18. return lum < 0.18 ? "#ffffff" : "#0a0a0a"; } function hashString(str: string) { let h = 2166136261; for (let i = 0; i < str.length; i++) { h ^= str.charCodeAt(i); h = Math.imul(h, 16777619); } return h >>> 0; } function mulberry32(seed: number) { let a = seed; return () => { a |= 0; a = (a + 0x6d2b79f5) | 0; let t = Math.imul(a ^ (a >>> 15), 1 | a); t = (t + Math.imul(t ^ (t >>> 7), 61 | t)) ^ t; return ((t ^ (t >>> 14)) >>> 0) / 4294967296; }; } type Vec = { x: number; y: number }; type Box = { x: number; y: number; w: number; h: number }; // Internal ops: `select` expands to a move to the top-left + a drag. type Op = | { k: "move"; to: CohortTarget; anchor: CohortPoint; dur?: number } | { k: "drag"; target: string | CohortRect; dur: number } | { k: "click" } | { k: "type"; text: string; dur: number; hold: number } | { k: "react"; emoji: string } | { k: "wait"; dur: number }; function compile(script: CohortStep[]): Op[] { const ops: Op[] = []; for (const s of script) { switch (s.type) { case "move": ops.push({ k: "move", to: s.to, anchor: s.anchor ?? [0.5, 0.5], dur: s.duration }); break; case "select": ops.push({ k: "move", to: s.target, anchor: [0, 0] }); ops.push({ k: "drag", target: s.target, dur: s.duration ?? 700 }); break; case "click": ops.push({ k: "click" }); break; case "type": ops.push({ k: "type", text: s.text, dur: s.duration ?? s.text.length * 55, hold: s.hold ?? 900 }); break; case "react": ops.push({ k: "react", emoji: s.emoji }); break; case "wait": ops.push({ k: "wait", dur: s.duration ?? 900 }); break; } } return ops; } interface Runtime { x: MotionValue; y: MotionValue; scale: MotionValue; opacity: MotionValue; selX: MotionValue; selY: MotionValue; selW: MotionValue; selH: MotionValue; selO: MotionValue; bubbleO: MotionValue; text: MotionValue; pillX?: MotionValue; pillY?: MotionValue; ops: Op[]; seed: number; rng: () => number; phase: "intro" | "run" | "done"; i: number; /** Current step has finished; waiting for permission to start the next. */ pending: boolean; stepStart: number; base: Vec; from: Vec; to: Vec; ctrl: Vec; dur: number; selTarget: number; bubbleTarget: number; drift: number; driftPhase: number; gen: number; /** Last resolved destination spec, re-resolved on resize. */ rest: { to: CohortTarget; anchor: CohortPoint } | null; selSpec: string | CohortRect | null; } interface Fx { id: number; kind: "ripple" | "react"; x: number; y: number; color: string; emoji?: string; } function isRect(t: CohortTarget): t is CohortRect { return typeof t !== "string" && t.length === 4; } /** * Cohort — fake live collaboration for marketing heroes. A handful of named * pointers (arrow + name pill in their color) act out looping scripts over * the children: gliding along curved, slightly overshooting paths, clicking * with ripples, dragging translucent selections, typing comment bubbles and * floating emoji reactions. Scripts run concurrently; pointer positions are * driven by motion values (no per-frame React renders) and the name pill * trails on a softer spring. Targets resolve from percent coordinates or * `[data-cohort]` elements inside the children, measured relative to the * container and re-measured on resize. When the visitor's pointer enters, * cursors finish their current step and idle with a subtle drift, resuming * 1.5s after it leaves. The overlay is `aria-hidden` and pointer-transparent; * playback pauses offscreen and on hidden tabs. Under reduced motion the * cursors park at their first targets with their name pills — no motion. */ export function Cohort({ children, className, cursors = DEFAULT_CURSORS, loop = true, speedScale = 1, pauseOnPointer = true, paused = false, ref, onPointerEnter, onPointerLeave, ...props }: CohortProps) { const reducedMotion = useReducedMotion(); const [fx, setFx] = React.useState([]); const fxId = React.useRef(0); // Scripts are plain data: key on their content so inline literals don't reset playback. const cursorsKey = JSON.stringify(cursors); const scriptHash = hashString(cursorsKey); const runtimes = React.useMemo( () => cursors.map((c, idx) => { const seed = hashString(`${c.name}:${idx}`); const rng = mulberry32(seed); return { x: motionValue(0), y: motionValue(0), scale: motionValue(1), opacity: motionValue(0), selX: motionValue(0), selY: motionValue(0), selW: motionValue(0), selH: motionValue(0), selO: motionValue(0), bubbleO: motionValue(0), text: motionValue(""), ops: compile(c.script), seed, rng, phase: "intro", i: 0, pending: true, stepStart: 0, base: { x: 0, y: 0 }, from: { x: 0, y: 0 }, to: { x: 0, y: 0 }, ctrl: { x: 0, y: 0 }, dur: 0, selTarget: 0, bubbleTarget: 0, drift: 1, driftPhase: rng() * Math.PI * 2, gen: 0, rest: null, selSpec: null, }; }), // eslint-disable-next-line react-hooks/exhaustive-deps [cursorsKey] ); const live = React.useRef({ clock: 0, real: 0, last: -1, inside: false, leftAt: -Infinity, size: { w: 0, h: 0 }, gen: 0, }); const opts = React.useRef({ loop, speedScale, pauseOnPointer, cursors, reducedMotion }); opts.current = { loop, speedScale, pauseOnPointer, cursors, reducedMotion }; const containerRef = useVisibilityPause((elapsed) => tick(elapsed), { paused: reducedMotion || paused, }); // --- target resolution (container-relative px) ----------------------------- const resolveBox = React.useCallback((t: CohortTarget): Box => { const { w, h } = live.current.size; if (typeof t !== "string") { if (isRect(t)) return { x: (t[0] / 100) * w, y: (t[1] / 100) * h, w: (t[2] / 100) * w, h: (t[3] / 100) * h }; return { x: (t[0] / 100) * w, y: (t[1] / 100) * h, w: 0, h: 0 }; } const root = containerRef.current; let el: Element | null = null; if (root) { const sel = /^[\w-]+$/.test(t) ? `[data-cohort="${t}"]` : t; try { el = root.querySelector(sel); } catch { el = null; } } if (!root || !el) return { x: w / 2, y: h / 2, w: 0, h: 0 }; const rr = root.getBoundingClientRect(); const er = el.getBoundingClientRect(); return { x: er.left - rr.left, y: er.top - rr.top, w: er.width, h: er.height }; }, [containerRef]); const resolvePoint = React.useCallback( (t: CohortTarget, anchor: CohortPoint): Vec => { const b = resolveBox(t); return { x: b.x + b.w * anchor[0], y: b.y + b.h * anchor[1] }; }, [resolveBox] ); const spawn = React.useCallback((f: Omit) => { const id = ++fxId.current; setFx((prev) => [...prev.slice(-11), { ...f, id }]); }, []); const teleport = (r: Runtime, p: Vec) => { r.base = { ...p }; r.x.jump(p.x); r.y.jump(p.y); r.pillX?.jump(p.x); r.pillY?.jump(p.y); }; const clearMarks = (r: Runtime, hard: boolean) => { r.selTarget = 0; r.bubbleTarget = 0; if (hard) { r.selO.set(0); r.bubbleO.set(0); r.text.set(""); } }; const firstTarget = (r: Runtime) => { const first = r.ops.find((o) => o.k === "move") as Extract | undefined; return first ? { to: first.to, anchor: first.anchor } : null; }; const measure = () => { const el = containerRef.current; if (!el) return; const rect = el.getBoundingClientRect(); live.current.size = { w: rect.width, h: rect.height }; }; /** Park every cursor at its first target, fully visible (reduced motion / paused-from-start frame). */ const placeStatic = () => { measure(); for (const r of runtimes) { const t = firstTarget(r); const p = t ? resolvePoint(t.to, t.anchor) : { x: live.current.size.w / 2, y: live.current.size.h / 2 }; teleport(r, p); r.rest = t; r.opacity.set(1); r.scale.set(1); clearMarks(r, true); r.phase = "run"; r.i = 0; r.pending = true; r.drift = 1; } }; /** Fresh start: cursors wait offstage-adjacent, then fade in staggered and run. */ const reset = () => { measure(); const L = live.current; L.clock = 0; L.last = -1; for (const r of runtimes) { r.rng = mulberry32(r.seed); const t = firstTarget(r); const p = t ? resolvePoint(t.to, t.anchor) : { x: L.size.w / 2, y: L.size.h / 2 }; const ang = r.rng() * Math.PI * 2; const dist = 60 + r.rng() * 70; teleport(r, { x: clamp(p.x + Math.cos(ang) * dist, 12, Math.max(12, L.size.w - 60)), y: clamp(p.y + Math.sin(ang) * dist, 12, Math.max(12, L.size.h - 40)), }); r.rest = null; r.selSpec = null; r.opacity.set(0); r.scale.set(1); clearMarks(r, true); r.phase = "intro"; r.i = 0; r.pending = true; r.drift = 1; r.gen = L.gen; } setFx([]); }; const beginStep = (r: Runtime, now: number) => { const o = opts.current; if (r.i >= r.ops.length) { if (!o.loop || r.ops.length === 0) { r.phase = "done"; return; } r.i = 0; clearMarks(r, false); } const op = r.ops[r.i]; r.pending = false; r.stepStart = now; const color = o.cursors[runtimes.indexOf(r)]?.color ?? "#fff"; switch (op.k) { case "move": { clearMarks(r, false); r.from = { ...r.base }; r.to = resolvePoint(op.to, op.anchor); r.rest = { to: op.to, anchor: op.anchor }; const dx = r.to.x - r.from.x; const dy = r.to.y - r.from.y; const dist = Math.hypot(dx, dy); const bend = dist * (0.12 + r.rng() * 0.16) * (r.rng() < 0.5 ? -1 : 1); const nx = dist > 0 ? -dy / dist : 0; const ny = dist > 0 ? dx / dist : 0; r.ctrl = { x: (r.from.x + r.to.x) / 2 + nx * bend, y: (r.from.y + r.to.y) / 2 + ny * bend }; r.dur = op.dur ?? clamp(520 + dist * 0.9, 500, 1500); if (dist < 3) r.dur = Math.min(r.dur, 200); break; } case "drag": { const b = resolveBox(op.target); r.from = { x: b.x, y: b.y }; r.to = { x: b.x + b.w, y: b.y + b.h }; r.selSpec = op.target; r.rest = { to: op.target, anchor: [1, 1] }; r.dur = op.dur; r.selX.set(b.x); r.selY.set(b.y); r.selW.set(0); r.selH.set(0); r.selO.set(0); r.selTarget = 1; break; } case "click": r.dur = CLICK_MS; spawn({ kind: "ripple", x: r.base.x, y: r.base.y, color }); break; case "type": r.text.set(""); r.bubbleTarget = 1; r.dur = op.dur + op.hold; break; case "react": r.dur = 520; spawn({ kind: "react", x: r.base.x, y: r.base.y, color, emoji: op.emoji }); break; case "wait": r.dur = op.dur; break; } }; function tick(elapsed: number) { const L = live.current; const o = opts.current; const dt = L.last < 0 ? 0 : clamp(elapsed - L.last, 0, 0.1); L.last = elapsed; L.real += dt; L.clock += dt * Math.max(0, o.speedScale); const now = L.clock; const smooth = 1 - Math.exp(-dt * 9); const canAdvance = !o.pauseOnPointer || (!L.inside && L.real - L.leftAt >= RESUME_DELAY); runtimes.forEach((r, idx) => { // Re-measure after a resize: snap parked cursors / retarget the live move. if (r.gen !== L.gen) { r.gen = L.gen; const op = r.ops[r.i]; if (!r.pending && op?.k === "move") { r.to = resolvePoint(op.to, op.anchor); } else if (r.rest && !(op?.k === "drag" && !r.pending)) { r.base = resolvePoint(r.rest.to, r.rest.anchor); } if (r.selSpec && r.selTarget > 0 && !(op?.k === "drag" && !r.pending)) { const b = resolveBox(r.selSpec); r.selX.set(b.x); r.selY.set(b.y); r.selW.set(b.w); r.selH.set(b.h); } } if (r.phase === "intro") { const t = now - idx * INTRO_STAGGER; r.opacity.set(clamp(t / INTRO_FADE, 0, 1)); if (t >= INTRO_FADE) r.phase = "run"; } let moving = false; if (r.phase === "run") { if (r.pending && canAdvance) beginStep(r, now); const op = r.ops[r.i]; if (r.phase === "run" && !r.pending && op) { const ms = (now - r.stepStart) * 1000; const s = r.dur > 0 ? ms / r.dur : 1; switch (op.k) { case "move": { moving = true; const p = springEase(Math.min(s, 1)); const q = 1 - p; r.base = s >= 1 ? { ...r.to } : { x: q * q * r.from.x + 2 * q * p * r.ctrl.x + p * p * r.to.x, y: q * q * r.from.y + 2 * q * p * r.ctrl.y + p * p * r.to.y, }; break; } case "drag": { moving = true; const e = easeInOut(clamp(s, 0, 1)); r.base = { x: r.from.x + (r.to.x - r.from.x) * e, y: r.from.y + (r.to.y - r.from.y) * e }; r.selW.set(Math.max(0, r.base.x - r.from.x)); r.selH.set(Math.max(0, r.base.y - r.from.y)); break; } case "click": r.scale.set(1 - 0.18 * Math.sin(Math.PI * clamp(s, 0, 1))); break; case "type": { const n = Math.floor(op.text.length * clamp(op.dur > 0 ? ms / op.dur : 1, 0, 1)); if (r.text.get().length !== n) r.text.set(op.text.slice(0, n)); break; } default: break; } if (s >= 1) { if (op.k === "click") r.scale.set(1); r.i += 1; r.pending = true; if (canAdvance) beginStep(r, now); } } } // Subtle human drift whenever the pointer isn't travelling. r.drift += ((moving ? 0 : 1) - r.drift) * (1 - Math.exp(-dt * 3)); const ph = r.driftPhase; const dx = Math.sin(L.real * 0.9 + ph) * 3.2 * r.drift; const dy = Math.sin(L.real * 1.3 + ph * 1.7) * 2.4 * r.drift; r.x.set(r.base.x + dx); r.y.set(r.base.y + dy); r.selO.set(r.selO.get() + (r.selTarget - r.selO.get()) * smooth); const bo = r.bubbleO.get() + (r.bubbleTarget - r.bubbleO.get()) * smooth; r.bubbleO.set(bo); if (r.bubbleTarget === 0 && bo < 0.02 && r.text.get() !== "") r.text.set(""); }); } // Mount / script change / motion preference: lay out the opening frame. React.useLayoutEffect(() => { if (reducedMotion) placeStatic(); else if (paused && live.current.clock === 0) placeStatic(); else if (live.current.clock === 0) reset(); // eslint-disable-next-line react-hooks/exhaustive-deps }, [runtimes, reducedMotion]); React.useEffect(() => { if (paused && !reducedMotion && live.current.clock === 0) placeStatic(); // eslint-disable-next-line react-hooks/exhaustive-deps }, [paused]); // Container-relative measurement: re-measure on resize; ticks re-resolve targets. React.useEffect(() => { const el = containerRef.current; if (!el || typeof ResizeObserver === "undefined") return; const ro = new ResizeObserver(() => { measure(); live.current.gen += 1; if (opts.current.reducedMotion) placeStatic(); }); ro.observe(el); return () => ro.disconnect(); // eslint-disable-next-line react-hooks/exhaustive-deps }, [runtimes]); React.useImperativeHandle( ref, () => ({ restart: () => { if (opts.current.reducedMotion) placeStatic(); else reset(); }, }), // eslint-disable-next-line react-hooks/exhaustive-deps [runtimes] ); const removeFx = React.useCallback((id: number) => { setFx((prev) => prev.filter((f) => f.id !== id)); }, []); return (

{ live.current.inside = true; onPointerEnter?.(e); }} onPointerLeave={(e) => { live.current.inside = false; live.current.leftAt = live.current.real; onPointerLeave?.(e); }} {...props} > {children}

{runtimes.map((r, i) => { const c = cursors[i]; if (!c) return null; return ( ); })} {fx.map((f) => f.kind === "ripple" ? ( removeFx(f.id)} /> ) : ( removeFx(f.id)} > {f.emoji} ) )} {runtimes.map((r, i) => { const c = cursors[i]; if (!c) return null; return ; })}

); } function CohortPointer({ runtime: r, cursor, still }: { runtime: Runtime; cursor: CohortCursor; still: boolean }) { const springX = useSpring(r.x, PILL_SPRING); const springY = useSpring(r.y, PILL_SPRING); React.useLayoutEffect(() => { r.pillX = springX; r.pillY = springY; springX.jump(r.x.get()); springY.jump(r.y.get()); return () => { r.pillX = undefined; r.pillY = undefined; }; }, [r, springX, springY]); const pillX = still ? r.x : springX; const pillY = still ? r.y : springY; return ( <>

{cursor.name} {r.text}

); } ```