Components storyDesign system
VisualSite

Components story

Dot animation of component shapes and theme changes.

npx context-ds add story-components
On the site

Usage

Use it for

Component styles and themes on a site card. Plays only on screen; shows the card with reduced motion.

Avoid

  • Stories as the main content of a page

Dependencies: dot-engine

Example

examples/story-components.tsx
import { Card } from "@/components/ui/card";import { ComponentsStory } from "@/components/visuals/stories/components-story";export function Site() {  return (    <Card variant="ring" className="min-h-[22rem] w-full max-w-xl items-center justify-center">      <div className="relative w-full max-w-[26rem]">        <ComponentsStory />      </div>    </Card>  );}

Source

components/visuals/stories/components-story.tsx
'use client';import { COMPONENTS_RESTING, COMPONENTS_STORY_GRID } from '@/components/visuals/stories/components-story-scenes';import { DotStory, type LoadDotStory } from '@/components/visuals/dot-engine/dot-story';const loadComponentsStory: LoadDotStory = async (stage) => {	const { createComponentsStoryPlayer } = await import('@/components/visuals/stories/components-story-player');	return createComponentsStoryPlayer(stage);};/** * The "Component details" card's picture: a button rounds to the site's radius and becomes a card, then the sun * and moon of its light and dark themes. With reduced motion it shows the card. */export function ComponentsStory({ className }: { className?: string }) {	return <DotStory grid={COMPONENTS_STORY_GRID} resting={COMPONENTS_RESTING} load={loadComponentsStory} className={className} />;}
components/visuals/stories/components-story-player.ts
import { BUTTON_ROUNDED, BUTTON_SQUARE, CAPTIONS, CARD_PICTURE, COMPONENTS_STORY_GRID, MOON_AT_REST, MOON_WITH_STARS, SITE_RADIUS, SITE_RADIUS_PX, STAR_COUNT, SUN_AT_REST, SUN_TURN, paintButton, paintMoon, paintSun } from '@/components/visuals/stories/components-story-scenes';import { captionedBeat } from '@/components/visuals/dot-engine/story-caption';import { createBeatStoryPlayer } from '@/components/visuals/dot-engine/dot-story-beats';import { clamp01, easeOut } from '@/components/visuals/dot-engine/dot-story-cells';import type { DotStoryPlayer, DotStoryStage } from '@/components/visuals/dot-engine/dot-story-player';/** * One site's components, played as a loop: a square button's corners round to the site's radius as it is read, and * it melts into a card; the card melts into the sun of the light theme, its rays turning, and the sun into the * crescent of the dark one, its stars coming out. */const ROUNDING = { startsAt: 0.5, seconds: 0.9 };// The rays are back where they started as the sun melts away.const SUN = { seconds: 3, turns: 2 };const STARS = { startsAt: 0.6, everySeconds: 0.5 };const roundedAt = (heldSeconds: number) => easeOut(clamp01((heldSeconds - ROUNDING.startsAt) / ROUNDING.seconds));export function createComponentsStoryPlayer(stage: DotStoryStage): DotStoryPlayer {	const [radiusLabel, radius, radiusDetail] = CAPTIONS.button;	return createBeatStoryPlayer(stage, {		grid: COMPONENTS_STORY_GRID,		resting: { beat: 1, heldSeconds: 1.5 },		beats: [			{				...captionedBeat({ picture: BUTTON_SQUARE, departure: BUTTON_ROUNDED, caption: CAPTIONS.button, holdSeconds: ROUNDING.startsAt + ROUNDING.seconds + 1.4, animate: (states, heldSeconds) => void paintButton(states, roundedAt(heldSeconds) * SITE_RADIUS) }),				write(pen, heldSeconds) {					pen.text(radiusLabel);					pen.text({ ...radius, text: `${Math.round(roundedAt(heldSeconds) * SITE_RADIUS_PX)}px` });					pen.text(radiusDetail, clamp01((heldSeconds - ROUNDING.startsAt - ROUNDING.seconds) / 0.3));				},			},			captionedBeat({ picture: CARD_PICTURE, caption: CAPTIONS.card, holdSeconds: 2.4, isTyped: true }),			captionedBeat({ picture: SUN_AT_REST, caption: CAPTIONS.light, holdSeconds: SUN.seconds, isTyped: true, animate: (states, heldSeconds) => void paintSun(states, (heldSeconds / SUN.seconds) * SUN.turns * SUN_TURN) }),			captionedBeat({				picture: MOON_AT_REST,				departure: MOON_WITH_STARS,				caption: CAPTIONS.dark,				holdSeconds: 2.8,				isTyped: true,				animate: (states, heldSeconds) => void paintMoon(states, heldSeconds < STARS.startsAt ? 0 : Math.min(STAR_COUNT, Math.floor((heldSeconds - STARS.startsAt) / STARS.everySeconds) + 1)),			}),		],	});}
components/visuals/stories/components-story-scenes.ts
import { storyCaption } from '@/components/visuals/dot-engine/story-caption';import { DOT_ABSENT, DOT_FILLED, DOT_HOLLOW, type DotGrid } from '@/components/visuals/dot-engine/dot-morph-dots';import type { StoryPicture } from '@/components/visuals/dot-engine/dot-story-beats';import { cellsOfStates, distanceToSegment, isFilledAmongSolids, paintShape, roundedBox, solidWithSpeckle, type DotBox, type DotShape } from '@/components/visuals/dot-engine/dot-story-cells';/** * The "Component details" card's pictures, in the brand dot grid: a button whose corners round to the site's * radius, a card built the way the site builds them, and the theme the site is in, a sun for light and a moon for dark. */// The ring pattern behind the picture already keeps clear of it, so the dots need no halo of their own.export const COMPONENTS_STORY_GRID: DotGrid = { columns: 58, rows: 38, pitch: 10, dotRadius: 3.2, ringStroke: 1, haloRadius: 0 };const { columns: COLUMNS, rows: ROWS } = COMPONENTS_STORY_GRID;const pictureOfStates = (states: Uint8Array): StoryPicture => ({ states, cells: cellsOfStates(COMPONENTS_STORY_GRID, states) });const blank = () => new Uint8Array(COLUMNS * ROWS);const between = (value: number, from: number, to: number) => value >= from && value <= to;const CENTER = { column: 16, row: 19 };const BUTTON: DotBox = { left: 3, right: 29, top: 13, bottom: 24 };const BUTTON_LABEL = { rows: [18, 19], left: 10, right: 22 };/** The button's corner, in dots, at the site's radius: between square and a full pill. */export const SITE_RADIUS = 3;/** The button with its corners rounded to `radius` dots; its label is cut out of it in rings. */export function paintButton(states: Uint8Array, radius: number) {	states.fill(DOT_ABSENT);	return paintShape(COMPONENTS_STORY_GRID, states, roundedBox(BUTTON, radius), (column, row) => (BUTTON_LABEL.rows.includes(row) && between(column, BUTTON_LABEL.left, BUTTON_LABEL.right) ? DOT_HOLLOW : DOT_FILLED));}export const BUTTON_SQUARE = pictureOfStates(paintButton(blank(), 0));export const BUTTON_ROUNDED = pictureOfStates(paintButton(blank(), SITE_RADIUS));const CARD: DotBox = { left: 5, right: 27, top: 4, bottom: 33 };const CARD_PARTS = { radius: 3, media: { top: 6, bottom: 16 }, inset: 3, title: { rows: [19, 20], right: 19 }, lines: [{ row: 23, right: 23 }, { row: 25, right: 20 }], action: { top: 28, bottom: 30, right: 15 } };// A card as the site builds them: a picture, a title, two lines of copy and an action.export const CARD_PICTURE = pictureOfStates(	paintShape(COMPONENTS_STORY_GRID, blank(), roundedBox(CARD, CARD_PARTS.radius), (column, row) => {		const isInset = between(column, CARD.left + CARD_PARTS.inset, CARD.right - CARD_PARTS.inset);		if (!isInset) return DOT_ABSENT;		if (between(row, CARD_PARTS.media.top, CARD_PARTS.media.bottom)) return solidWithSpeckle(column, row);		if (CARD_PARTS.title.rows.includes(row)) return column <= CARD_PARTS.title.right ? DOT_FILLED : DOT_ABSENT;		if (CARD_PARTS.lines.some((line) => line.row === row && column <= line.right)) return DOT_HOLLOW;		return between(row, CARD_PARTS.action.top, CARD_PARTS.action.bottom) && column <= CARD_PARTS.action.right ? DOT_FILLED : DOT_ABSENT;	}));const SUN = { radius: 6.2, rays: 8, rayFrom: 8.6, rayTo: 12.4, rayWidth: 0.8 };const isSunDisc: DotShape = (column, row) => Math.hypot(column - CENTER.column, row - CENTER.row) <= SUN.radius;const isRay = (column: number, row: number, turned: number) =>	Array.from({ length: SUN.rays }, (_, ray) => turned + (ray / SUN.rays) * Math.PI * 2).some(		(angle) =>			distanceToSegment(column, row, { column: CENTER.column + SUN.rayFrom * Math.cos(angle), row: CENTER.row + SUN.rayFrom * Math.sin(angle) }, { column: CENTER.column + SUN.rayTo * Math.cos(angle), row: CENTER.row + SUN.rayTo * Math.sin(angle) }) < SUN.rayWidth	);/** How far the sun's rays turn before it looks the same again: from one ray to the next. */export const SUN_TURN = (Math.PI * 2) / SUN.rays;/** The light theme's sun, its rays turned `turned` radians. */export function paintSun(states: Uint8Array, turned: number) {	for (let row = 0; row < ROWS; row++) {		for (let column = 0; column < COLUMNS / 2 + 2; column++) states[row * COLUMNS + column] = isRay(column, row, turned) ? DOT_FILLED : DOT_ABSENT;	}	return paintShape(COMPONENTS_STORY_GRID, states, isSunDisc, (column, row) => (isFilledAmongSolids(column, row) ? DOT_FILLED : DOT_HOLLOW));}export const SUN_AT_REST = pictureOfStates(paintSun(blank(), 0));const MOON = { radius: 11.5, bite: { across: 6, up: 4.5, radius: 10 }, stars: [{ column: 25, row: 9 }, { column: 28, row: 17 }] };const isMoon: DotShape = (column, row) =>	Math.hypot(column - CENTER.column + 2, row - CENTER.row) <= MOON.radius && Math.hypot(column - CENTER.column + 2 - MOON.bite.across, row - CENTER.row + MOON.bite.up) > MOON.bite.radius;/** The dark theme's crescent moon, with its first `stars` stars out: each a small cross. */export function paintMoon(states: Uint8Array, stars: number) {	states.fill(DOT_ABSENT);	MOON.stars.slice(0, stars).forEach(({ column, row }) => {		for (const [across, down] of [[0, 0], [1, 0], [-1, 0], [0, 1], [0, -1]]) states[(row + down) * COLUMNS + column + across] = DOT_FILLED;	});	return paintShape(COMPONENTS_STORY_GRID, states, isMoon, solidWithSpeckle);}export const STAR_COUNT = MOON.stars.length;export const MOON_AT_REST = pictureOfStates(paintMoon(blank(), 0));export const MOON_WITH_STARS = pictureOfStates(paintMoon(blank(), STAR_COUNT));const caption = (label: string, value: string, detail: string) => storyCaption(COMPONENTS_STORY_GRID, 35, label, value, detail);export const SITE_RADIUS_PX = 8;export const CAPTIONS = {	button: caption('button radius', `${SITE_RADIUS_PX}px`, 'padding 8px 16px'),	card: caption('component', 'card', 'radius, border, shadow'),	light: caption('theme', 'light', 'as the site renders it'),	dark: caption('theme', 'dark', 'fonts linked, too'),};/** The card: what the picture shows before it plays, and instead of playing with reduced motion. */export const COMPONENTS_RESTING = { ...CARD_PICTURE, texts: CAPTIONS.card };

Reference: site src/components/sections/products/components-story.tsx.