19 KiB
Hero 数字水墨动画实现计划
面向 AI 代理的工作者: 必需子技能:使用 superpowers:subagent-driven-development(推荐)或 superpowers:executing-plans 逐任务实现此计划。步骤使用复选框(
- [ ])语法来跟踪进度。
目标: 为 Hero 区域实现"数字水墨"Canvas 2D 粒子动画,传达"传统智慧 → 数字化转型"的品牌叙事。
架构: 新建 InkDataMorph Canvas 2D 粒子组件,三阶段状态机驱动(扩散 → 沉淀 → 数据化),集成到 hero-section-v2.tsx 中作为背景层,文字内容层在 Canvas 之上。
技术栈: React 18 + Canvas 2D API + requestAnimationFrame + Jest
规格文档: docs/superpowers/specs/2026-05-03-hero-ink-data-morph-design.md
文件结构
| 操作 | 文件 | 职责 |
|---|---|---|
| 新建 | src/components/effects/ink-data-morph.tsx |
数字水墨粒子引擎组件 |
| 新建 | src/components/effects/ink-data-morph.test.tsx |
组件单元测试 |
| 修改 | src/components/effects/index.ts |
导出新组件 |
| 修改 | src/components/sections/hero-section-v2.tsx |
集成 InkDataMorph + 调整背景色/延迟 |
任务 1:InkDataMorph 组件 — 粒子数据结构与初始化
文件:
-
创建:
src/components/effects/ink-data-morph.tsx -
步骤 1:创建组件骨架与粒子类型定义
创建 src/components/effects/ink-data-morph.tsx,包含完整的类型定义和组件骨架:
'use client';
import { useEffect, useRef, useCallback } from 'react';
import { useReducedMotion } from '@/hooks/use-reduced-motion';
interface InkDataMorphProps {
particleCount?: number;
primaryColor?: string;
accentColor?: string;
connectionColor?: string;
connectionDistance?: number;
className?: string;
}
interface Particle {
x: number;
y: number;
vx: number;
vy: number;
radius: number;
initialRadius: number;
dataRadius: number;
opacity: number;
isAccent: boolean;
phase: 'spreading' | 'settling' | 'morphing' | 'complete';
spreadTime: number;
maxSpreadTime: number;
settleTime: number;
morphProgress: number;
targetX: number;
targetY: number;
delay: number;
age: number;
}
const DEFAULTS = {
particleCount: 150,
primaryColor: '#1C1C1C',
accentColor: '#C41E3A',
connectionColor: '#C41E3A',
connectionDistance: 80,
} as const;
function easeOutQuart(t: number): number {
return 1 - Math.pow(1 - t, 4);
}
function easeInOutCubic(t: number): number {
return t < 0.5 ? 4 * t * t * t : 1 - Math.pow(-2 * t + 2, 3) / 2;
}
function lerp(a: number, b: number, t: number): number {
return a + (b - a) * t;
}
function hexToRgb(hex: string): string {
const r = parseInt(hex.slice(1, 3), 16);
const g = parseInt(hex.slice(3, 5), 16);
const b = parseInt(hex.slice(5, 7), 16);
return `${r}, ${g}, ${b}`;
}
export function InkDataMorph({
particleCount = DEFAULTS.particleCount,
primaryColor = DEFAULTS.primaryColor,
accentColor = DEFAULTS.accentColor,
connectionColor = DEFAULTS.connectionColor,
connectionDistance = DEFAULTS.connectionDistance,
className = '',
}: InkDataMorphProps) {
const canvasRef = useRef<HTMLCanvasElement>(null);
const particlesRef = useRef<Particle[]>([]);
const animationRef = useRef<number | undefined>(undefined);
const startTimeRef = useRef<number>(0);
const shouldReduceMotion = useReducedMotion();
const createParticle = useCallback((
cx: number,
cy: number,
W: number,
H: number,
delay: number,
): Particle => {
const angle = Math.random() * Math.PI * 2;
const dist = Math.random() * 10;
const speed = 0.3 + Math.random() * 1.5;
return {
x: cx + Math.cos(angle) * dist,
y: cy + Math.sin(angle) * dist,
vx: Math.cos(angle) * speed,
vy: Math.sin(angle) * speed,
radius: 1.5 + Math.random() * 4,
initialRadius: 1.5 + Math.random() * 4,
dataRadius: 1 + Math.random() * 2,
opacity: 0.4 + Math.random() * 0.4,
isAccent: Math.random() > 0.75,
phase: 'spreading',
spreadTime: 0,
maxSpreadTime: 60 + Math.random() * 80,
settleTime: 0,
morphProgress: 0,
targetX: W * (0.55 + Math.random() * 0.35),
targetY: H * (0.15 + Math.random() * 0.6),
delay,
age: 0,
};
}, []);
const initParticles = useCallback((W: number, H: number) => {
const center1 = { x: W * 0.7, y: H * 0.35 };
const center2 = { x: W * 0.25, y: H * 0.65 };
const count1 = Math.floor(particleCount * 0.67);
const count2 = particleCount - count1;
const particles: Particle[] = [];
for (let i = 0; i < count1; i++) {
particles.push(createParticle(center1.x, center1.y, W, H, 0));
}
for (let i = 0; i < count2; i++) {
particles.push(createParticle(center2.x, center2.y, W, H, 30));
}
particlesRef.current = particles;
}, [particleCount, createParticle]);
return (
<canvas
ref={canvasRef}
className={`absolute inset-0 w-full h-full pointer-events-none ${className}`}
aria-hidden="true"
/>
);
}
- 步骤 2:验证文件无语法错误
运行:npx tsc --noEmit src/components/effects/ink-data-morph.tsx
预期:无错误输出
- 步骤 3:Commit
git add src/components/effects/ink-data-morph.tsx
git commit -m "feat(effects): add InkDataMorph component skeleton with particle types"
任务 2:InkDataMorph 组件 — 三阶段动画引擎
文件:
-
修改:
src/components/effects/ink-data-morph.tsx -
步骤 1:在组件内添加 updateParticle、drawParticle、drawConnections、animate 函数
在 InkDataMorph 组件的 return 语句之前,添加以下函数:
const updateParticle = useCallback((p: Particle) => {
p.age++;
if (p.age < p.delay) return;
if (p.phase === 'spreading') {
p.x += p.vx;
p.y += p.vy;
p.vx *= 0.98;
p.vy *= 0.98;
p.spreadTime++;
if (p.spreadTime >= p.maxSpreadTime) {
p.phase = 'settling';
}
} else if (p.phase === 'settling') {
p.settleTime++;
p.opacity = Math.max(0.15, p.opacity - 0.003);
if (p.settleTime > 60) {
p.phase = 'morphing';
}
} else if (p.phase === 'morphing') {
p.morphProgress = Math.min(1, p.morphProgress + 0.008);
const t = easeInOutCubic(p.morphProgress);
p.x = lerp(p.x, p.targetX, t * 0.02);
p.y = lerp(p.y, p.targetY, t * 0.02);
p.radius = lerp(p.radius, p.dataRadius, t * 0.02);
p.opacity = lerp(p.opacity, 0.2, t * 0.01);
if (p.morphProgress >= 1) {
p.phase = 'complete';
}
}
}, []);
const drawParticle = useCallback((
ctx: CanvasRenderingContext2D,
p: Particle,
primaryRgb: string,
accentRgb: string,
) => {
if (p.age < p.delay) return;
ctx.beginPath();
ctx.arc(p.x, p.y, Math.max(0.5, p.radius), 0, Math.PI * 2);
ctx.fillStyle = p.isAccent
? `rgba(${accentRgb}, ${p.opacity})`
: `rgba(${primaryRgb}, ${p.opacity})`;
ctx.fill();
if (p.radius > 3 && p.phase === 'spreading') {
ctx.beginPath();
ctx.arc(p.x, p.y, p.radius * 2.5, 0, Math.PI * 2);
ctx.fillStyle = p.isAccent
? `rgba(${accentRgb}, ${p.opacity * 0.1})`
: `rgba(${primaryRgb}, ${p.opacity * 0.08})`;
ctx.fill();
}
}, []);
const drawConnections = useCallback((
ctx: CanvasRenderingContext2D,
particles: Particle[],
connectionRgb: string,
) => {
const morphed = particles.filter(
p => p.phase === 'morphing' && p.morphProgress > 0.3
);
ctx.save();
for (let i = 0; i < morphed.length; i++) {
for (let j = i + 1; j < morphed.length; j++) {
const dx = morphed[i].x - morphed[j].x;
const dy = morphed[i].y - morphed[j].y;
const dist = Math.sqrt(dx * dx + dy * dy);
if (dist < connectionDistance) {
const alpha =
(1 - dist / connectionDistance) *
0.08 *
Math.min(morphed[i].morphProgress, morphed[j].morphProgress);
ctx.beginPath();
ctx.moveTo(morphed[i].x, morphed[i].y);
ctx.lineTo(morphed[j].x, morphed[j].y);
ctx.strokeStyle = `rgba(${connectionRgb}, ${alpha})`;
ctx.lineWidth = 0.5;
ctx.stroke();
}
}
}
ctx.restore();
}, [connectionDistance]);
const drawBgOrbs = useCallback((
ctx: CanvasRenderingContext2D,
W: number,
H: number,
accentRgb: string,
primaryRgb: string,
) => {
const orbs = [
{ x: W * 0.65, y: H * 0.3, r: 300, rgb: accentRgb, alpha: 0.03 },
{ x: W * 0.3, y: H * 0.7, r: 250, rgb: primaryRgb, alpha: 0.02 },
];
for (const o of orbs) {
const grad = ctx.createRadialGradient(o.x, o.y, 0, o.x, o.y, o.r);
grad.addColorStop(0, `rgba(${o.rgb}, ${o.alpha})`);
grad.addColorStop(1, 'transparent');
ctx.fillStyle = grad;
ctx.fillRect(o.x - o.r, o.y - o.r, o.r * 2, o.r * 2);
}
}, []);
- 步骤 2:添加 animate 函数和 useEffect
在 drawBgOrbs 之后、return 之前添加:
const animate = useCallback(() => {
const canvas = canvasRef.current;
if (!canvas) return;
const ctx = canvas.getContext('2d');
if (!ctx) return;
const W = canvas.width / 2;
const H = canvas.height / 2;
const primaryRgb = hexToRgb(primaryColor);
const accentRgb = hexToRgb(accentColor);
const connectionRgb = hexToRgb(connectionColor);
ctx.setTransform(2, 0, 0, 2, 0, 0);
ctx.clearRect(0, 0, W, H);
ctx.fillStyle = '#FAFAF5';
ctx.fillRect(0, 0, W, H);
drawBgOrbs(ctx, W, H, accentRgb, primaryRgb);
const particles = particlesRef.current;
let allComplete = true;
for (const p of particles) {
updateParticle(p);
drawParticle(ctx, p, primaryRgb, accentRgb);
if (p.phase !== 'complete') allComplete = false;
}
drawConnections(ctx, particles, connectionRgb);
if (allComplete) {
animationRef.current = undefined;
return;
}
animationRef.current = requestAnimationFrame(animate);
}, [primaryColor, accentColor, connectionColor, updateParticle, drawParticle, drawConnections, drawBgOrbs]);
const drawStaticFinal = useCallback(() => {
const canvas = canvasRef.current;
if (!canvas) return;
const ctx = canvas.getContext('2d');
if (!ctx) return;
const W = canvas.width / 2;
const H = canvas.height / 2;
const primaryRgb = hexToRgb(primaryColor);
const accentRgb = hexToRgb(accentColor);
const connectionRgb = hexToRgb(connectionColor);
ctx.setTransform(2, 0, 0, 2, 0, 0);
ctx.clearRect(0, 0, W, H);
ctx.fillStyle = '#FAFAF5';
ctx.fillRect(0, 0, W, H);
drawBgOrbs(ctx, W, H, accentRgb, primaryRgb);
const particles = particlesRef.current;
for (const p of particles) {
p.x = p.targetX;
p.y = p.targetY;
p.radius = p.dataRadius;
p.opacity = 0.2;
p.phase = 'complete';
drawParticle(ctx, p, primaryRgb, accentRgb);
}
drawConnections(ctx, particles, connectionRgb);
}, [primaryColor, accentColor, connectionColor, drawParticle, drawConnections, drawBgOrbs]);
useEffect(() => {
const canvas = canvasRef.current;
if (!canvas) return;
const parent = canvas.parentElement;
if (!parent) return;
const W = parent.clientWidth;
const H = parent.clientHeight;
canvas.width = W * 2;
canvas.height = H * 2;
initParticles(W, H);
if (shouldReduceMotion) {
drawStaticFinal();
return;
}
startTimeRef.current = performance.now();
animationRef.current = requestAnimationFrame(animate);
return () => {
if (animationRef.current !== undefined) {
cancelAnimationFrame(animationRef.current);
}
};
}, [shouldReduceMotion, initParticles, animate, drawStaticFinal]);
- 步骤 3:验证 TypeScript 编译
运行:npx tsc --noEmit src/components/effects/ink-data-morph.tsx
预期:无错误
- 步骤 4:Commit
git add src/components/effects/ink-data-morph.tsx
git commit -m "feat(effects): add three-phase animation engine to InkDataMorph"
任务 3:InkDataMorph 单元测试
文件:
-
创建:
src/components/effects/ink-data-morph.test.tsx -
步骤 1:编写测试
创建 src/components/effects/ink-data-morph.test.tsx:
import { render } from '@testing-library/react';
import '@testing-library/jest-dom';
import { InkDataMorph } from './ink-data-morph';
jest.mock('@/hooks/use-reduced-motion', () => ({
useReducedMotion: () => false,
}));
describe('InkDataMorph', () => {
beforeEach(() => {
jest.clearAllMocks();
});
it('should render a canvas element', () => {
const { container } = render(
<div style={{ width: 800, height: 600, position: 'relative' }}>
<InkDataMorph />
</div>
);
const canvas = container.querySelector('canvas');
expect(canvas).toBeInTheDocument();
});
it('should have aria-hidden="true"', () => {
const { container } = render(
<div style={{ width: 800, height: 600, position: 'relative' }}>
<InkDataMorph />
</div>
);
const canvas = container.querySelector('canvas');
expect(canvas).toHaveAttribute('aria-hidden', 'true');
});
it('should have pointer-events-none class', () => {
const { container } = render(
<div style={{ width: 800, height: 600, position: 'relative' }}>
<InkDataMorph />
</div>
);
const canvas = container.querySelector('canvas');
expect(canvas).toHaveClass('pointer-events-none');
});
it('should apply custom className', () => {
const { container } = render(
<div style={{ width: 800, height: 600, position: 'relative' }}>
<InkDataMorph className="custom-class" />
</div>
);
const canvas = container.querySelector('canvas');
expect(canvas).toHaveClass('custom-class');
});
it('should accept custom props without crashing', () => {
const { container } = render(
<div style={{ width: 800, height: 600, position: 'relative' }}>
<InkDataMorph
particleCount={100}
primaryColor="#333333"
accentColor="#FF0000"
connectionColor="#FF0000"
connectionDistance={100}
/>
</div>
);
const canvas = container.querySelector('canvas');
expect(canvas).toBeInTheDocument();
});
it('should not start requestAnimationFrame when reduced motion is preferred', () => {
jest.resetModules();
jest.doMock('@/hooks/use-reduced-motion', () => ({
useReducedMotion: () => true,
}));
const rafSpy = jest.spyOn(window, 'requestAnimationFrame');
const { InkDataMorph: ReducedInkDataMorph } = require('./ink-data-morph');
render(
<div style={{ width: 800, height: 600, position: 'relative' }}>
<ReducedInkDataMorph />
</div>
);
expect(rafSpy).not.toHaveBeenCalled();
rafSpy.mockRestore();
jest.dontMock('@/hooks/use-reduced-motion');
});
it('should cleanup requestAnimationFrame on unmount', () => {
const cafSpy = jest.spyOn(window, 'cancelAnimationFrame');
const { unmount } = render(
<div style={{ width: 800, height: 600, position: 'relative' }}>
<InkDataMorph />
</div>
);
unmount();
expect(cafSpy).toHaveBeenCalled();
cafSpy.mockRestore();
});
});
- 步骤 2:运行测试
运行:npx jest src/components/effects/ink-data-morph.test.tsx --no-coverage
预期:所有测试通过
- 步骤 3:Commit
git add src/components/effects/ink-data-morph.test.tsx
git commit -m "test(effects): add InkDataMorph unit tests"
任务 4:导出 InkDataMorph 组件
文件:
-
修改:
src/components/effects/index.ts -
步骤 1:添加导出
在 src/components/effects/index.ts 末尾添加一行:
export { InkDataMorph } from './ink-data-morph';
- 步骤 2:验证导出
运行:npx tsc --noEmit
预期:无错误
- 步骤 3:Commit
git add src/components/effects/index.ts
git commit -m "feat(effects): export InkDataMorph from index"
任务 5:集成 InkDataMorph 到 Hero Section
文件:
-
修改:
src/components/sections/hero-section-v2.tsx -
步骤 1:添加 dynamic import 并修改 Hero 组件
对 hero-section-v2.tsx 做以下修改:
- 在文件顶部 import 区域添加 dynamic import(在
import { useReducedMotion }之后):
import dynamic from 'next/dynamic';
const InkDataMorph = dynamic(
() => import('@/components/effects/ink-data-morph').then(mod => ({ default: mod.InkDataMorph })),
{ ssr: false }
);
- 将
<section>的className从bg-white改为bg-[#FAFAF5]:
className="relative min-h-screen flex flex-col justify-center overflow-hidden bg-[#FAFAF5]"
- 在
<section>开始标签之后、<div className="container-wide之前,添加 Canvas 层:
<InkDataMorph />
- 修改各 motion 元素的 delay,对齐 Canvas 动画时序:
- 品牌标签 delay:
0→1.6 - 标题 delay:
0.1→1.9 - 副标题 delay:
0.2→2.2 - 描述 delay:
0.3→2.5 - 按钮组 delay:
0.4→2.8
具体修改:
-
品牌标签
transition={{ duration: 0.5, ease: [0.16, 1, 0.3, 1] }}→transition={{ duration: 0.5, delay: 1.6, ease: [0.16, 1, 0.3, 1] }} -
标题
transition={{ duration: 0.5, delay: 0.1, ease: [0.16, 1, 0.3, 1] }}→transition={{ duration: 0.5, delay: 1.9, ease: [0.16, 1, 0.3, 1] }} -
副标题
transition={{ duration: 0.5, delay: 0.2, ease: [0.16, 1, 0.3, 1] }}→transition={{ duration: 0.5, delay: 2.2, ease: [0.16, 1, 0.3, 1] }} -
描述
transition={{ duration: 0.5, delay: 0.3, ease: [0.16, 1, 0.3, 1] }}→transition={{ duration: 0.5, delay: 2.5, ease: [0.16, 1, 0.3, 1] }} -
按钮组
transition={{ duration: 0.5, delay: 0.4, ease: [0.16, 1, 0.3, 1] }}→transition={{ duration: 0.5, delay: 2.8, ease: [0.16, 1, 0.3, 1] }} -
步骤 2:验证 TypeScript 编译
运行:npx tsc --noEmit
预期:无错误
- 步骤 3:Commit
git add src/components/sections/hero-section-v2.tsx
git commit -m "feat(hero): integrate InkDataMorph animation with adjusted timing"
任务 6:视觉验证与最终检查
文件: 无文件修改
- 步骤 1:启动开发服务器并验证
运行:npm run dev
验证清单:
- 打开首页,观察 Hero 区域三阶段动画
- 确认背景色为宣纸暖白(#FAFAF5)
- 确认文字在 Canvas 粒子之上
- 确认动画完成后无持续 CPU 开销(DevTools Performance 面板)
- 切换到移动端视口(375px),确认动画流畅
- 在 DevTools 中模拟
prefers-reduced-motion: reduce,确认直接显示静态数据网络
- 步骤 2:运行完整测试套件
运行:npx jest src/components/effects/ink-data-morph.test.tsx --no-coverage
预期:所有测试通过
- 步骤 3:运行 lint
运行:npx next lint --file src/components/effects/ink-data-morph.tsx --file src/components/sections/hero-section-v2.tsx
预期:无错误
- 步骤 4:最终 Commit(如有 lint 修复)
git add -A
git commit -m "chore: lint fixes for ink-data-morph integration"