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An event is a beginning.

섹션 · MIT

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CASE STUDY
An event is a beginning. 정적 미리보기

갤러리 안에서는 화면을 벗어나거나 움직임을 멈추면 예제도 닫힙니다. 다시 재생할 때는 처음부터 시작해요.

큰 화면으로 보기 새 탭실행 HTML 저장

저장한 HTML에서는 갤러리의 재생 설정이 적용되지 않아요.

SOURCE FILES

독립 예제 코드 읽기

7개 파일

사례의 구도나 문서의 원리를 바탕으로 새로 만든 예제입니다. 아래 코드를 복사해 직접 응용할 수 있습니다. 실행 HTML에는 미리보기를 위한 실행 환경이 들어 있습니다.

index.html독립 구현
파일 저장 

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</style></head><body><main id="root" class="study"><header class="masthead"><strong>STYLEGALLERY / STUDIES</strong><span>CODE + CURIOSITY / 13</span><span>INDEPENDENT EXAMPLE</span></header><div class="intro"><div><p class="eyebrow">13 / Interaction &amp; timeline composer</p><h1>An event is a beginning.</h1></div><p>Choose what starts a sequence, which objects it affects, and how their timing overlaps. The sample content stays semantic and independent of the effect.</p></div><div class="workbench"><div class="visual composer"><div class="composer-surface" data-event-surface tabindex="0" role="group" aria-label="Sequence preview. Use the trigger button for keyboard activation."><div class="composer-label">SMALL EXHIBITION / THREE FORMS</div><div class="form-set"><article data-target><div class="form-art form-orbit"></div><h2>Orbit</h2><p>Balance around a center.</p></article><article data-target><div class="form-art form-stack"></div><h2>Stack</h2><p>Rhythm in repetition.</p></article><article data-target><div class="form-art form-fold"></div><h2>Fold</h2><p>A change in direction.</p></article></div></div><div class="timeline-rows" data-tracks></div></div><aside class="panel" aria-label="Study controls"><label class="control"><span>Trigger adapter</span><select data-control="trigger"><option value="click" selected>Button click</option><option value="hover">Pointer / keyboard focus</option><option value="scroll">Native document scroll</option></select></label><label class="control"><span>Preset</span><select data-control="preset"><option value="reveal" selected>Rise and reveal</option><option value="stagger">Alternating stagger</option><option value="scale">Scale from center</option></select></label><label class="control"><span>Targets</span><select data-control="targets"><option value="all" selected>All three forms</option><option value="first">Orbit only</option><option value="last">Fold only</option></select></label><label class="control"><span>Duration · ms<output data-value="duration">800</output></span><input aria-label="Duration · ms" data-control="duration" type="range" min="200" max="1800" value="800" step="50"></label><label class="control"><span>Delay between · ms<output data-value="delay">180</output></span><input aria-label="Delay between · ms" data-control="delay" type="range" min="0" max="600" value="180" step="20"></label><label class="control"><span>Order</span><select data-control="order"><option value="forward" selected>Forward</option><option value="reverse">Reverse</option></select></label><label class="control"><span>Timeline<output data-value="progress">100</output></span><input aria-label="Timeline" data-control="progress" type="range" min="0" max="100" value="100" step="1"></label><div class="controls"><button type="button" data-action="trigger" >Trigger sequence</button><button type="button" data-play aria-pressed="false">Play motion</button></div><output class="readout" data-readout>PRESET / REVEAL
TRIGGER / CLICK</output></aside></div><div class="scroll-sample" data-scroll-sample><p>When “Native document scroll” is selected, move this study in the document to scrub the same preset.</p></div><div class="motion-bar"><label><input type="checkbox" data-static> Static view · less motion</label><p class="feedback" data-feedback aria-live="polite">Motion starts only when requested. All inputs are local.</p></div><details class="contract"><summary>What this study teaches</summary><p>A consumer-owned event adapter launches one preset evaluator. Duration, delay and order define track offsets; the scrubber can inspect the same timeline without firing its trigger.</p><p>Independent implementation informed by “Kirki Sets a New Standard for WordPress Animations &amp; Interactions”, , Codrops. This is newly authored code and artwork, not a recovered original project. Show the general event/timeline mechanism and label it as an independent study. Do not imply equivalence with the complete commercial editor.</p></details><noscript><div class="fallback"><p>This study’s explanation and initial HTML illustration remain available. Interactive rendering needs JavaScript.</p></div></noscript></main><script>/* Generated by scripts/build-codrops-article-studies.mjs.
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 const uniforms=new Map(),uniform=(name,...args)=>{if(!uniforms.has(name))uniforms.set(name,gl.getUniformLocation(program,name));const location=uniforms.get(name);if(location===null)return;if(args[0] instanceof Float32Array)gl.uniform3fv(location,args[0]);else gl['uniform'+args.length+'f'](location,...args);};
 function resize(){const r=canvas.getBoundingClientRect();canvas.width=Math.max(1,Math.round(Math.min(r.width,850)));canvas.height=Math.max(1,Math.round(canvas.width/(r.width/Math.max(1,r.height))));gl.viewport(0,0,canvas.width,canvas.height);uniform('uResolution',canvas.width,canvas.height);repaint();}
 const observer=new ResizeObserver(resize);observer.observe(canvas);cleanups.push(()=>{observer.disconnect();gl.deleteBuffer(buffer);gl.deleteProgram(program);gl.deleteShader(vs);gl.deleteShader(fs);});resize();return {gl,program,buffer,uniform,resize};}
try{
function renderPreset(dt){stage.dataset.trigger=value('trigger');const duration=number('duration'),delay=number('delay'),total=duration+delay*2;let progress=number('progress')/100;if(dt){progress=clamp(progress+dt*1000/total);if(progress===1)stop();$('[data-control="progress"]').value=String(progress*100);}const preset=value('preset'),reverse=value('order')==='reverse',targets=value('targets');$$('[data-target]').forEach((node,i)=>{const selected=targets==='all'||(targets==='first'&&i===0)||(targets==='last'&&i===2),order=reverse?2-i:i,p=selected&&!isReduced?clamp((progress*total-order*delay)/duration):1,ease=1-Math.pow(1-p,3);node.style.opacity=String(preset==='reveal'?p:1);node.style.transform=preset==='scale'?'scale('+(.65+.35*ease)+')':'translateY('+((1-ease)*65*(preset==='stagger'&&i%2?-1:1))+'px)';});$('[data-tracks]').innerHTML=['Orbit','Stack','Fold'].map((name,i)=>{const order=reverse?2-i:i;return '<div class="timeline-row"><span>'+name+'</span><div class="timeline-line"><div class="timeline-block" style="left:'+(order*delay/total*100)+'%;width:'+(duration/total*100)+'%"></div><i class="timeline-cursor" style="left:'+(progress*100)+'%"></i></div></div>';}).join('');setText('[data-value="progress"]',Math.round(progress*100));setText('[data-readout]','TRIGGER / '+value('trigger').toUpperCase()+'\nPRESET / '+preset.toUpperCase()+'\nDURATION / '+total+'ms\nPLAYHEAD / '+Math.round(progress*total)+'ms');}
function launchPreset(){stop();$('[data-control="progress"]').value=isReduced?'100':'0';repaint();start();}
listen('trigger',launchPreset);on($('[data-event-surface]'),'pointerenter',()=>{if(value('trigger')==='hover')launchPreset();});on($('[data-event-surface]'),'focusin',()=>{if(value('trigger')==='hover')launchPreset();});on(window,'scroll',()=>{if(value('trigger')!=='scroll'||isReduced)return;stop();const r=stage.getBoundingClientRect(),distance=Math.max(1,stage.offsetHeight-innerHeight);$('[data-control="progress"]').value=String(clamp(-r.top/distance)*100);repaint();},{passive:true});install(renderPreset);
}catch(error){report(error);}
requestAnimationFrame(()=>requestAnimationFrame(()=>{if(preview.status!=='error'){preview.status='mounted';document.body.dataset.previewStatus='mounted';parent.postMessage({type:'sg-preview-ready',id},'*');observe();setTimeout(observe,700);}}));
})();</script></body></html>
styles.css독립 구현
파일 저장 

/* Generated by scripts/build-codrops-article-studies.mjs.
MIT License

Copyright (c) 2026 StyleGallery contributors

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Scope: independently authored study HTML, CSS, JavaScript, shaders and SVG only. Original articles, source projects, brands, artwork and screenshots are excluded. Their licenses and acquisition dispositions are unchanged.
*/

*{box-sizing:border-box}html{color-scheme:dark}html,body{margin:0;min-height:100%}body{background:var(--paper,#0c1321);color:var(--ink,#f4f3e9);font-family:Arial,Helvetica,sans-serif}button,input,select{font:inherit}button,select,input{min-width:0}button{background:transparent;border:1px solid #ffffff40;border-radius:999px;color:inherit;cursor:pointer;min-height:40px;padding:10px 16px}button:hover{background:#ffffff15}button[aria-pressed=true]{background:var(--accent,#dbff78);border-color:transparent;color:#122014}button:disabled{cursor:default;opacity:.6}button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,a:focus-visible{outline:3px solid var(--accent,#dbff78);outline-offset:4px}input,select{accent-color:var(--accent,#dbff78)}select,input[type=text],input[type=number]{background:#132235;border:1px solid #ffffff50;border-radius:7px;color:#fff;min-height:38px;padding:8px;width:100%}input[type=range]{display:block;min-height:30px;width:100%}a{color:inherit}svg{display:block;max-width:100%}h1,h2,p,figure{margin:0}h1{font-size:clamp(36px,6.5vw,78px);font-weight:500;letter-spacing:-.06em;line-height:.99}h2{font-size:24px;font-weight:500;letter-spacing:-.025em}p{line-height:1.55}.study{isolation:isolate;min-height:100vh;padding:clamp(18px,3.8vw,48px)}.masthead{align-items:center;display:flex;flex-wrap:wrap;font:10px/1.5 ui-monospace,monospace;gap:16px;justify-content:space-between;letter-spacing:.11em;margin-bottom:35px;text-transform:uppercase}.masthead strong{font-size:12px;letter-spacing:-.02em}.intro{display:grid;gap:18px;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);margin-bottom:30px;align-items:end}.intro p{color:var(--muted,#b7c7d4);font-size:13px;max-width:38em}.eyebrow{color:var(--accent,#dbff78);font:10px/1.4 ui-monospace,monospace;letter-spacing:.14em;margin-bottom:12px;text-transform:uppercase}.workbench{display:grid;gap:20px;grid-template-columns:minmax(0,1fr) 230px}.visual{background:var(--surface,#101d2b);border:1px solid #ffffff20;border-radius:20px;min-width:0;overflow:hidden;position:relative}.drawing{height:auto;width:100%}.art-canvas{aspect-ratio:1.55;display:block;height:auto;width:100%}.panel{align-content:start;display:grid;gap:17px}.control{display:grid;font-size:11px;gap:7px;min-width:0}.control>span{display:flex;gap:10px;justify-content:space-between}.control output{color:var(--accent,#dbff78);font-family:ui-monospace,monospace}.controls{display:flex;flex-wrap:wrap;gap:8px}.readout{background:#ffffff09;border:1px solid #ffffff18;border-radius:12px;font:11px/1.7 ui-monospace,monospace;overflow-wrap:anywhere;padding:14px;white-space:pre-line}.legend{align-items:center;display:flex;flex-wrap:wrap;font:10px/1.6 ui-monospace,monospace;gap:16px;padding:16px 20px}.legend i{background:var(--accent,#dbff78);border-radius:50%;display:inline-block;height:6px;margin-right:6px;width:6px}.contract{border-top:1px solid #ffffff20;color:var(--muted,#b7c7d4);font-size:11px;margin-top:28px;padding-top:18px}.contract summary{color:var(--ink,#f4f3e9);cursor:pointer;font-size:12px}.contract p{margin-top:10px;max-width:90ch}.motion-bar{align-items:center;border-top:1px solid #ffffff20;display:flex;flex-wrap:wrap;font-size:11px;gap:12px;justify-content:space-between;margin-top:26px;padding-top:18px}.motion-bar label{align-items:center;display:flex;gap:8px}.feedback{color:var(--muted,#b7c7d4);font:11px/1.5 ui-monospace,monospace;min-height:18px}.visually-hidden{clip-path:inset(50%);height:1px;overflow:hidden;position:absolute;width:1px}[hidden]{display:none!important}.stage-note{background:#07111ac9;bottom:18px;color:#dfe8f0;font:11px/1.5 ui-monospace,monospace;left:18px;max-width:calc(100% - 36px);padding:8px 12px;position:absolute;z-index:2}.big-number{font-size:clamp(70px,14vw,180px);letter-spacing:-.08em;line-height:1}.plain-list{display:grid;gap:12px;list-style:none;margin:0;padding:0}.plain-list li{border-bottom:1px solid #ffffff20;padding:12px 0}.tabs{display:flex;flex-wrap:wrap;gap:7px}.tabs button{font-size:11px}.two{display:grid;gap:20px;grid-template-columns:1fr 1fr}.code-sample{color:#c9ecbe;font:11px/1.7 ui-monospace,monospace;overflow:auto;white-space:pre-wrap}.fallback{padding:30px}.fallback p{max-width:38ch}.static-gallery{display:none}.study[data-reduced=true] .static-gallery{display:grid}.study[data-reduced=true] .animated-story{display:none}.study[data-reduced=true] *{animation:none!important;transition:none!important}body[data-preview-status=error] .feedback{color:#ffbba3}@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;scroll-behavior:auto!important;transition:none!important}}@media(max-width:700px){.intro{grid-template-columns:1fr}.workbench{grid-template-columns:1fr}.panel{grid-template-columns:repeat(2,minmax(0,1fr))}.panel>.readout,.panel>.controls{grid-column:1/-1}.masthead{margin-bottom:26px}.two{grid-template-columns:1fr}}@media(max-width:380px){.panel{gap:12px}.control{font-size:10px}.panel button{font-size:11px;padding:9px 12px}.legend{gap:8px;padding:12px}.visual{border-radius:13px}}

.composer{background:#20242a}.composer-surface{padding:30px}.composer-label{color:#d7ccb4;font:10px ui-monospace,monospace;letter-spacing:.13em;margin-bottom:35px}.form-set{display:grid;gap:20px;grid-template-columns:repeat(3,minmax(0,1fr))}.form-set article{min-width:0}.form-set h2{font:24px Georgia,serif;margin:18px 0 6px}.form-set p{color:#bcc8c8;font-size:11px}.form-art{aspect-ratio:.8;background:#c7c1ac;overflow:hidden;position:relative}.form-art::before,.form-art::after{content:'';position:absolute}.form-orbit::before{border:25px solid #b6603b;border-radius:50%;height:70%;left:12%;top:13%;transform:rotate(-28deg) scaleX(.62);width:80%}.form-orbit::after{background:#343e37;border-radius:50%;height:25%;left:40%;top:38%;width:30%}.form-stack{background:repeating-linear-gradient(-23deg,#2f5150 0 24px,#83a496 25px 33px,#c6bd9f 34px 62px)}.form-fold{background:conic-gradient(from 70deg at 22% 45%,#efc89b 0 20%,#a84337 20% 50%,#d99055 50% 75%,#dfb68d 75%)}.timeline-rows{border-top:1px solid #ffffff25;padding:20px 25px}.timeline-row{align-items:center;display:grid;font:9px ui-monospace,monospace;gap:15px;grid-template-columns:40px 1fr;margin:8px 0}.timeline-line{background:#ffffff0c;height:18px;position:relative}.timeline-block{background:#d8dd9c;border-radius:3px;height:100%;position:absolute}.timeline-cursor{border-left:1px solid white;height:24px;position:absolute;top:-3px}.scroll-sample{color:#bbc8cb;font-size:11px;margin-top:15px}.study[data-trigger=scroll] .scroll-sample{min-height:70vh}.composer-surface:focus-visible{outline:3px solid #dbff78;outline-offset:-4px}@media(max-width:420px){.composer-surface{padding:20px}.form-set{gap:9px}.form-set h2{font-size:21px}.form-set p{font-size:10px}}

@media(max-height:550px) and (min-width:500px){
.study{padding:18px}.masthead{font-size:8px;gap:10px;margin-bottom:16px}.masthead strong{font-size:10px}.intro{gap:18px;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);margin-bottom:18px}.intro h1{font-size:34px}.intro p{font-size:10px;line-height:1.5}.intro .eyebrow{font-size:8px;margin-bottom:8px}.workbench{gap:16px;grid-template-columns:minmax(0,1fr) 174px}.panel{gap:10px;grid-template-columns:1fr}.panel .control{font-size:9px;gap:3px}.panel .control input[type=range]{min-height:22px}.panel select,.panel input[type=text],.panel input[type=number]{font-size:10px;min-height:31px;padding:6px}.panel .controls{gap:5px}.panel button{font-size:9px;min-height:30px;padding:7px 10px}.panel .readout{font-size:8px;padding:10px}.art-canvas{aspect-ratio:auto!important;height:250px;object-fit:contain}.legend{font-size:8px;gap:8px;padding:10px 13px}.stage-note{bottom:12px;font-size:8px;left:12px;padding:5px 8px}.type-lab{min-height:280px;padding:23px}.type-heading{font-size:36px}.particle-rack{height:80px}.type-rule{font-size:7px}.bounce-lab>.drawing{height:230px;object-fit:contain}.track-graph{padding:9px 16px}.track-graph svg{height:43px}.member-lab{min-height:300px;padding:18px}.member-heading h2{font-size:24px}.member-collage{height:180px}.member-total .counter{font-size:52px}.member-total>span{font-size:7px}.member-card span{font-size:6px;padding:4px}.composer-surface{padding:20px}.composer-label{font-size:8px;margin-bottom:20px}.form-set{gap:10px}.form-set h2{font-size:20px;margin-top:12px}.form-set p{font-size:9px}.timeline-rows{padding:12px 17px}.mascot-lab>.drawing{height:250px;object-fit:contain}.pose-strip{padding:10px 14px}.pose-marker{font-size:8px;padding:6px 0}.fit-stage{min-height:270px;padding:20px}.fit-stage canvas{max-height:235px}.tree-columns{grid-template-columns:125px minmax(0,1fr);min-height:320px}.tree-inspector{padding:17px 12px}.tree-inspector pre{font-size:8px;margin-top:18px}.tree-rules{display:none}.tree-preview{min-height:0;padding:14px}.tree-width-label,.tree-caption{font-size:7px}.fixture-copy h2{font-size:1.6em}.fixture-copy p{font-size:.65em}.fixture-output{gap:10px;padding:12px}.fixture-art{max-height:90px}.semantic-lab{grid-template-columns:110px minmax(0,1fr);min-height:320px}.node-list{flex-direction:column;padding:12px 7px}.node-list button{font-size:8px;gap:5px;padding:9px 7px}.node-list button small{font-size:7px}.semantic-preview{padding:14px}.semantic-fixture{padding:8px}.semantic-fixture h2{font-size:27px}.semantic-fixture p{font-size:10px}.semantic-art{height:75px}.markup-panel{padding:15px}.markup-panel pre{font-size:8px}.plant-lab{padding:18px}.plant-heading h2{font-size:28px}.plant-heading span{font-size:8px}.plant-illustration{margin:-60px 0 -8px}.plant-illustration svg{height:250px}.plant-callouts{gap:5px}.plant-callouts button{font-size:7px;min-height:28px;padding:7px}.plant-feature,.care-plan{font-size:10px}.orbit-lab{min-height:300px}.orbit-camera{height:270px}.orbit-ring{height:170px;width:110px}.orbit-card{height:170px;width:110px}.orbit-foot{font-size:8px;padding:10px 14px}.botanical-window{aspect-ratio:1.5}.window-label h2{font-size:29px}.window-label span{font-size:8px}.gold-lab{padding:18px}.gold-heading h2{font-size:28px;margin-top:9px}.gold-heading>span,.gold-total>span{font-size:7px}.gold-lab>svg{height:175px;margin:-27px 0 -6px}.gold-total{padding-top:9px}.gold-total output{font-size:43px}.gold-disclaimer{font-size:9px}.story-controls{gap:10px;grid-template-columns:repeat(4,minmax(0,1fr));padding:10px 0;position:relative}.story-controls .control{font-size:8px}.story-controls input[type=range]{min-height:20px}.story-controls>.controls{grid-column:auto}.story-controls button{font-size:8px;min-height:27px;padding:6px 8px}.story-pin{top:10px}.story-pin>.visual{min-height:270px}.story-pin .art-canvas{height:270px}.story-copy{bottom:20px;left:20px;max-width:255px}.story-chapter h2{font-size:29px;margin:8px 0}.story-chapter p{font-size:10px}.story-chapter>span{font-size:8px}.moon-lab{aspect-ratio:auto;min-height:270px}.moon-progress,.cylinder-energy,.terrain-coordinates{font-size:8px}.story-skip{font-size:9px;margin-bottom:10px}.reading-chapter{grid-template-columns:1fr 1fr}.motion-bar{margin-top:18px}
}
함께 쓰는 파일 5개 보기
script.js독립 구현
파일 저장 

/* Generated by scripts/build-codrops-article-studies.mjs.
MIT License

Copyright (c) 2026 StyleGallery contributors

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Scope: independently authored study HTML, CSS, JavaScript, shaders and SVG only. Original articles, source projects, brands, artwork and screenshots are excluded. Their licenses and acquisition dispositions are unchanged.
*/
(() => {
'use strict';
const id="codrops-ad4839b98322",stage=document.querySelector('.study');
const preview=window.__STYLEGALLERY_PREVIEW__={id,status:'loading',errors:[]};
const report=error=>{const message=error instanceof Error?error.message:String(error);if(!preview.errors.includes(message))preview.errors.push(message);preview.status='error';document.body.dataset.previewStatus='error';parent.postMessage({type:'sg-preview-error',id,message},'*');const feedback=document.querySelector('[data-feedback]');if(feedback)feedback.textContent=message;};
addEventListener('error',event=>report(event.error||event.message));addEventListener('unhandledrejection',event=>report(event.reason));
const $=selector=>stage.querySelector(selector),$$=selector=>[...stage.querySelectorAll(selector)];
const value=key=>$('[data-control="'+key+'"]').value,number=key=>Number(value(key));
const clamp=(x,a=0,b=1)=>Math.max(a,Math.min(b,x)),lerp=(a,b,t)=>a+(b-a)*t;
const setText=(selector,text)=>{const node=$(selector);if(node)node.textContent=text;};
const media=matchMedia('(prefers-reduced-motion: reduce)');
let isReduced=media.matches,playing=false,time=0,draw=()=>{},raf=0,last=0,disposed=false;
const cleanups=[],on=(target,type,fn,options)=>{target.addEventListener(type,fn,options);cleanups.push(()=>target.removeEventListener(type,fn,options));};
const listen=(key,fn)=>on($('[data-action="'+key+'"]'),'click',fn);
const repaint=()=>{if(!disposed){try{draw(0);}catch(error){report(error);}}};
const loop=now=>{raf=0;if(disposed||!playing||isReduced)return;const dt=Math.min((now-last)/1000,.05);last=now;time+=dt;try{draw(dt);}catch(error){report(error);stop();return;}raf=requestAnimationFrame(loop);};
function stop(){playing=false;cancelAnimationFrame(raf);raf=0;$$('[data-play]').forEach(button=>{button.setAttribute('aria-pressed','false');button.textContent=isReduced?'Static view active':'Play motion';});}
function start(){if(isReduced)return;playing=true;last=performance.now();$$('[data-play]').forEach(button=>{button.setAttribute('aria-pressed','true');button.textContent='Pause motion';});if(!raf)raf=requestAnimationFrame(loop);}
function applyMotionPreference(){isReduced=media.matches||$('[data-static]').checked;stage.dataset.reduced=String(isReduced);if(isReduced)stop();$$('[data-play]').forEach(button=>{button.disabled=isReduced;button.textContent=playing?'Pause motion':isReduced?'Static view active':'Play motion';});repaint();}
function install(render){draw=render;applyMotionPreference();}
const observe=()=>{const root=document.getElementById('root'),elements=[...root.querySelectorAll('*')],rect=root.getBoundingClientRect();parent.postMessage({type:'sg-preview-observation',id,diagnostics:{textLength:root.textContent.trim().length,elementCount:elements.length,visibleElementCount:elements.filter(element=>{const r=element.getBoundingClientRect(),s=getComputedStyle(element);return r.width>0&&r.height>0&&s.display!=='none'&&s.visibility!=='hidden'&&Number(s.opacity)!==0;}).length,images:[],canvases:$$('canvas').map(c=>({width:c.width,height:c.height})),rootRect:{width:rect.width,height:rect.height},documentWidth:document.documentElement.scrollWidth,viewportWidth:innerWidth}},'*');};
on(media,'change',applyMotionPreference);on($('[data-static]'),'change',applyMotionPreference);
$$('[data-play]').forEach(button=>on(button,'click',()=>playing?stop():start()));
$$('[data-control]').forEach(input=>on(input,'input',()=>{const output=$('[data-value="'+input.dataset.control+'"]');if(output)output.textContent=input.value;if(input.dataset.control!=='story')repaint();}));
on(document,'visibilitychange',()=>{if(document.hidden)stop();});
on(window,'pagehide',()=>{disposed=true;stop();cleanups.forEach(fn=>fn());});
function canvas2D(selector,width=900,height=580){const canvas=$(selector);canvas.width=width;canvas.height=height;const context=canvas.getContext('2d');if(!context)throw Error('A 2D drawing surface is unavailable.');return {canvas,ctx:context,width,height};}
function createGL(canvas,fragment,vertex){const gl=canvas.getContext('webgl',{alpha:false,antialias:true,preserveDrawingBuffer:true});if(!gl){canvas.hidden=true;const fallback=$('[data-gl-fallback]');if(fallback)fallback.hidden=false;throw Error('WebGL is unavailable. The study explanation and controls remain readable.');}
 const shader=(type,source)=>{const s=gl.createShader(type);gl.shaderSource(s,source);gl.compileShader(s);if(!gl.getShaderParameter(s,gl.COMPILE_STATUS))throw Error(gl.getShaderInfoLog(s));return s;};
 const vs=shader(gl.VERTEX_SHADER,vertex||'attribute vec2 aPosition;varying vec2 vUv;void main(){vUv=aPosition*.5+.5;gl_Position=vec4(aPosition,0.,1.);}'),fs=shader(gl.FRAGMENT_SHADER,fragment),program=gl.createProgram();gl.attachShader(program,vs);gl.attachShader(program,fs);gl.linkProgram(program);if(!gl.getProgramParameter(program,gl.LINK_STATUS))throw Error(gl.getProgramInfoLog(program));gl.useProgram(program);
 const buffer=gl.createBuffer();gl.bindBuffer(gl.ARRAY_BUFFER,buffer);if(!vertex){gl.bufferData(gl.ARRAY_BUFFER,new Float32Array([-1,-1,1,-1,-1,1,-1,1,1,-1,1,1]),gl.STATIC_DRAW);const location=gl.getAttribLocation(program,'aPosition');gl.enableVertexAttribArray(location);gl.vertexAttribPointer(location,2,gl.FLOAT,false,0,0);}
 const uniforms=new Map(),uniform=(name,...args)=>{if(!uniforms.has(name))uniforms.set(name,gl.getUniformLocation(program,name));const location=uniforms.get(name);if(location===null)return;if(args[0] instanceof Float32Array)gl.uniform3fv(location,args[0]);else gl['uniform'+args.length+'f'](location,...args);};
 function resize(){const r=canvas.getBoundingClientRect();canvas.width=Math.max(1,Math.round(Math.min(r.width,850)));canvas.height=Math.max(1,Math.round(canvas.width/(r.width/Math.max(1,r.height))));gl.viewport(0,0,canvas.width,canvas.height);uniform('uResolution',canvas.width,canvas.height);repaint();}
 const observer=new ResizeObserver(resize);observer.observe(canvas);cleanups.push(()=>{observer.disconnect();gl.deleteBuffer(buffer);gl.deleteProgram(program);gl.deleteShader(vs);gl.deleteShader(fs);});resize();return {gl,program,buffer,uniform,resize};}
try{
function renderPreset(dt){stage.dataset.trigger=value('trigger');const duration=number('duration'),delay=number('delay'),total=duration+delay*2;let progress=number('progress')/100;if(dt){progress=clamp(progress+dt*1000/total);if(progress===1)stop();$('[data-control="progress"]').value=String(progress*100);}const preset=value('preset'),reverse=value('order')==='reverse',targets=value('targets');$$('[data-target]').forEach((node,i)=>{const selected=targets==='all'||(targets==='first'&&i===0)||(targets==='last'&&i===2),order=reverse?2-i:i,p=selected&&!isReduced?clamp((progress*total-order*delay)/duration):1,ease=1-Math.pow(1-p,3);node.style.opacity=String(preset==='reveal'?p:1);node.style.transform=preset==='scale'?'scale('+(.65+.35*ease)+')':'translateY('+((1-ease)*65*(preset==='stagger'&&i%2?-1:1))+'px)';});$('[data-tracks]').innerHTML=['Orbit','Stack','Fold'].map((name,i)=>{const order=reverse?2-i:i;return '<div class="timeline-row"><span>'+name+'</span><div class="timeline-line"><div class="timeline-block" style="left:'+(order*delay/total*100)+'%;width:'+(duration/total*100)+'%"></div><i class="timeline-cursor" style="left:'+(progress*100)+'%"></i></div></div>';}).join('');setText('[data-value="progress"]',Math.round(progress*100));setText('[data-readout]','TRIGGER / '+value('trigger').toUpperCase()+'\nPRESET / '+preset.toUpperCase()+'\nDURATION / '+total+'ms\nPLAYHEAD / '+Math.round(progress*total)+'ms');}
function launchPreset(){stop();$('[data-control="progress"]').value=isReduced?'100':'0';repaint();start();}
listen('trigger',launchPreset);on($('[data-event-surface]'),'pointerenter',()=>{if(value('trigger')==='hover')launchPreset();});on($('[data-event-surface]'),'focusin',()=>{if(value('trigger')==='hover')launchPreset();});on(window,'scroll',()=>{if(value('trigger')!=='scroll'||isReduced)return;stop();const r=stage.getBoundingClientRect(),distance=Math.max(1,stage.offsetHeight-innerHeight);$('[data-control="progress"]').value=String(clamp(-r.top/distance)*100);repaint();},{passive:true});install(renderPreset);
}catch(error){report(error);}
requestAnimationFrame(()=>requestAnimationFrame(()=>{if(preview.status!=='error'){preview.status='mounted';document.body.dataset.previewStatus='mounted';parent.postMessage({type:'sg-preview-ready',id},'*');observe();setTimeout(observe,700);}}));
})();
LICENSE독립 구현
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MIT License

Copyright (c) 2026 StyleGallery contributors

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Scope: independently authored study HTML, CSS, JavaScript, shaders and SVG only. Original articles, source projects, brands, artwork and screenshots are excluded. Their licenses and acquisition dispositions are unchanged.
NOTES.md독립 구현
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# An event is a beginning.

Independent article case study. Domain: website consumer / Design Engineering presentation.

A consumer-owned event adapter launches one preset evaluator. Duration, delay and order define track offsets; the scrubber can inspect the same timeline without firing its trigger.

## Attribution and evidence

Studied: [Kirki Sets a New Standard for WordPress Animations & Interactions](https://tympanus.net/codrops/2025/12/22/kirki-wordpress-interactions/), . Article SHA-256: 070d4550c551c51b7310941c66749d303b4194e6633bc56eb86aafdf1586c2c4. Analysis SHA-256: 10f43d79ff2ef509dd5db02b04f9bd65192e6e22f840b98439b3ee7fb6b176d1. Source revision: 6140f73f409856ade6064d0c9e19594e0a449104759779870a7f8a1f027eb978. The revision hashes the article/analysis hashes, the analyst principle and code-block evidence references; it identifies studied evidence, not a claim that the original demo executes.

Original acquisition: unresolved. Original license: unverified. originalSourceAcquired: false. The URL now resolves to the Kirki interaction-library/timeline article. The public workflow has no code blocks or original provider project export; Pro feature boundaries do not justify excluding the whole article.

No original article prose, code, artwork, source project or screenshot is distributed here. The authored-code MIT notice applies only to the independent implementation. Show the general event/timeline mechanism and label it as an independent study. Do not imply equivalence with the complete commercial editor.

## Initial state and controls

Choose what starts a sequence, which objects it affects, and how their timing overlaps. The sample content stays semantic and independent of the effect.

The page starts stationary. Play motion, where present, advances this study’s presentation until paused; text, bounce, portrait, orbit, strand and mascot motion loops, while the event composer stops at its endpoint. Scroll studies advance through ordinary document scroll or their chapter buttons. Static view stops time-based motion; manual controls still inspect values. The three scroll studies instead show every chapter in ordinary reading flow. Pointer parallax centers its decorative layers.

Initial control values:

| Control key | Value |
| --- | --- |
| trigger | click |
| preset | reveal |
| targets | all |
| duration | 800 |
| delay | 180 |
| order | forward |
| progress | 100 |

## Running and editing

Open index.html directly. It contains all runtime code and visuals and needs no package install, account, network, remote asset or browser-origin storage. Edit its inline style and script to change the downloaded page. styles.css and script.js are reference copies of the inline source; changing those copies alone does not change the running page. Repository regeneration overwrites index.html and all generated copies, including any manual edits. Keep a separate copy when editing a download. The repository authoring modules in vendor/codrops-article-studies/scenes-*.mjs and runtime.mjs regenerate these copies through node scripts/build-codrops-article-studies.mjs. Repository regeneration also needs the private source evidence; downloaded-page execution does not.

## Verification boundary

This generation passed the captured article/analysis hash checks, exact ID membership, local canonical Markdown anchor/hash checks, implementation-symbol checks, JavaScript parsing, semantic main/title counts, duplicate-ID checks and runtime URL/storage exclusion. The manifest codeFiles entries identify every emitted file by SHA-256. Each code symbol is a searchable named function, not a claimed executed call trace. Proposed checks are in KNOWLEDGE.json. runtime_verified: false. SG artifact capture proves only a recorded initial render; no interactive runtime, keyboard, accessibility, comfort or performance result is claimed.

Manual Chrome interaction is blocked by extension UI in this session. No alternate browser-control route was used. Preview sizing is native responsive width. Initial-render captures are tracked separately at site/artifacts/full-import/preview-posters/index.json and site/artifacts/full-import/preview-posters/visual-review.json in the repository. No capture receipt is bundled with this download. The bounded initial-render matrix requests all 21 studies at 320 pixels and three representative studies at 1280 pixels; the separate poster surface is 640 × 420. The authored CSS also adapts at 375 and 768 pixels, without claiming those widths were captured. A width request does not mean that capture exists or passed. Motion starts on explicit playback; system reduced motion and the Static view switch stop it.

consumer_reference: consumer-reference/agent-native/registry.json
KNOWLEDGE.json독립 구현
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[
  {
    "id": "codrops-ad4839b98322-article-0",
    "source": "motion/interruption-and-retargeting.md",
    "anchor": "reusable-method",
    "sourceSha256": "8b733e239fa3a1b2472b14bd2c1dbbdb7ea19b32e085e3cf3be148f001ccb2ea",
    "title": "13 / Interaction & timeline composer · launchPreset",
    "principle": "Repeated activation replaces the presentation playhead while keeping one active animation loop and unchanged target content.",
    "application": "A consumer-owned event adapter launches one preset evaluator. Duration, delay and order define track offsets; the scrubber can inspect the same timeline without firing its trigger. This binding describes the authored study and does not verify the original project.",
    "code": [
      {
        "file": "vendor/codrops-article-studies/records/codrops-ad4839b98322/script.js",
        "symbol": "launchPreset",
        "explanation": "The named local function implements this mechanism in the downloadable standalone page; its source hash is listed in codeFiles."
      }
    ],
    "checks": [
      {
        "id": "codrops-ad4839b98322-launchPreset",
        "action": "Trigger twice quickly, change the preset, then scrub to 100.",
        "expected": "Only the current preset is evaluated, all targets reach their final state, and semantic content remains unchanged."
      }
    ],
    "runtime_verified": false
  },
  {
    "id": "codrops-ad4839b98322-article-1",
    "source": "design-engineering/component-contract.md",
    "anchor": "contract-template",
    "sourceSha256": "79e496160e28ab26397d2c5b68075fd14c732d13002ff6c6e41c031d86cac039",
    "title": "13 / Interaction & timeline composer · renderPreset",
    "principle": "Trigger adapters and target selection are separate from timing; a visible native button reaches the same launch function as hover/focus.",
    "application": "A consumer-owned event adapter launches one preset evaluator. Duration, delay and order define track offsets; the scrubber can inspect the same timeline without firing its trigger. This binding describes the authored study and does not verify the original project.",
    "code": [
      {
        "file": "vendor/codrops-article-studies/records/codrops-ad4839b98322/script.js",
        "symbol": "renderPreset",
        "explanation": "The named local function implements this mechanism in the downloadable standalone page; its source hash is listed in codeFiles."
      }
    ],
    "checks": [
      {
        "id": "codrops-ad4839b98322-renderPreset",
        "action": "Select Pointer / keyboard focus, focus the preview, and activate Trigger sequence.",
        "expected": "Both paths launch the same preset; changing target selection leaves unselected content at its endpoint."
      }
    ],
    "runtime_verified": false
  },
  {
    "id": "codrops-ad4839b98322-article-2",
    "source": "motion/accessible-motion.md",
    "anchor": "preference-changes-during-work",
    "sourceSha256": "db0ad692d5bb3103a3cbe13ec08dbe5cf12552aed7ecf2c93b1d7cc0b8a34b8b",
    "title": "13 / Interaction & timeline composer · applyMotionPreference",
    "principle": "One effective preference owns CSS and script playback. The initial view is stationary, and manual controls retain the study values.",
    "application": "A consumer-owned event adapter launches one preset evaluator. Duration, delay and order define track offsets; the scrubber can inspect the same timeline without firing its trigger. This binding describes the authored study and does not verify the original project.",
    "code": [
      {
        "file": "vendor/codrops-article-studies/records/codrops-ad4839b98322/script.js",
        "symbol": "applyMotionPreference",
        "explanation": "The named local function implements this mechanism in the downloadable standalone page; its source hash is listed in codeFiles."
      }
    ],
    "checks": [
      {
        "id": "codrops-ad4839b98322-applyMotionPreference",
        "action": "Enable Static view during playback, then adjust the visible native controls.",
        "expected": "Playback stops, its button is disabled while the preference applies, and the current values remain inspectable without continuous motion."
      }
    ],
    "runtime_verified": false
  }
]
RETRIEVAL-LOG.md독립 구현
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# Retrieval log

Understood as: preserve all 21 original catalog IDs and acquisition dispositions while independently implementing each article’s technical principle as a consumer-owned case study.

SG discover and workflow read from site-compiler revision 6deb1970c80ed113b90be8d6ca617616bbe336c4; workflow SHA-256 0318a99707293af423e52b99b40cf1d87d9c7725e3ab06c5a231e3946f2bebb9. Stage 3 handoff is the primary implementation brief. No original scene assets or source files are reused.

Read-only canonical traversal:
1. AGENTS.md
2. README.md
3. DOMAINS.md
4. GOVERNANCE.md
5. design-engineering/index.md
6. motion/index.md
7. design-engineering/component-contract.md
8. design-engineering/state-management/patterns/derived-state.md
9. design-engineering/native-interaction-contracts.md
10. motion/accessible-motion.md
11. motion/rendering-and-performance.md
12. motion/interruption-and-retargeting.md
13. motion/interaction-recipes.md

Applied canonical sections and current-authoring hashes are recorded in KNOWLEDGE.json. No design-terminology records are relied on. External references within canonical guidance were not independently rechecked by this implementation lane; only the local sections and article capture identities were checked. Root Layout corpus, Game UI, provider integrations and publisher export claims were rejected as outside this lane.

BEHIND THE EXAMPLE

이 장면을 만드는 원리

  1. Motion

    13 / Interaction & timeline composer · launchPreset

    Repeated activation replaces the presentation playhead while keeping one active animation loop and unchanged target content.

    이 예제에서는
    A consumer-owned event adapter launches one preset evaluator. Duration, delay and order define track offsets; the scrubber can inspect the same timeline without firing its trigger. This binding describes the authored study and does not verify the original project.
    코드와 함께 확인하기

    코드에서 찾기

    • launchPresetscript.js

      The named local function implements this mechanism in the downloadable standalone page; its source hash is listed in codeFiles.

    전체 코드로 이동

    직접 해보기

    1. Trigger twice quickly, change the preset, then scrub to 100.

      살펴볼 변화Only the current preset is evaluated, all targets reach their final state, and semantic content remains unchanged.

  2. Design Engineering

    13 / Interaction & timeline composer · renderPreset

    Trigger adapters and target selection are separate from timing; a visible native button reaches the same launch function as hover/focus.

    이 예제에서는
    A consumer-owned event adapter launches one preset evaluator. Duration, delay and order define track offsets; the scrubber can inspect the same timeline without firing its trigger. This binding describes the authored study and does not verify the original project.
    코드와 함께 확인하기

    코드에서 찾기

    • renderPresetscript.js

      The named local function implements this mechanism in the downloadable standalone page; its source hash is listed in codeFiles.

    전체 코드로 이동

    직접 해보기

    1. Select Pointer / keyboard focus, focus the preview, and activate Trigger sequence.

      살펴볼 변화Both paths launch the same preset; changing target selection leaves unselected content at its endpoint.

  3. Motion

    13 / Interaction & timeline composer · applyMotionPreference

    One effective preference owns CSS and script playback. The initial view is stationary, and manual controls retain the study values.

    이 예제에서는
    A consumer-owned event adapter launches one preset evaluator. Duration, delay and order define track offsets; the scrubber can inspect the same timeline without firing its trigger. This binding describes the authored study and does not verify the original project.
    코드와 함께 확인하기

    코드에서 찾기

    • applyMotionPreferencescript.js

      The named local function implements this mechanism in the downloadable standalone page; its source hash is listed in codeFiles.

    전체 코드로 이동

    직접 해보기

    1. Enable Static view during playback, then adjust the visible native controls.

      살펴볼 변화Playback stops, its button is disabled while the preference applies, and the current values remain inspectable without continuous motion.