课堂表现散点分布图
在课堂表现场景中完成散点分布图：包含真实内容、可操作控件、清晰状态反馈和跨尺寸布局。
启用 JavaScript 后可编辑、运行和保存此案例。固定源码如下：
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<title>课堂表现散点分布图</title>
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<main class="page">
<header class="mast"><div><span class="eyebrow">art-deco / 散点分布图 / INTERMEDIATE</span><h1>课堂表现散点分布图</h1><p class="intro">在课堂表现场景中完成散点分布图：包含真实内容、可操作控件、清晰状态反馈和跨尺寸布局。</p></div><span class="scenario">课堂表现</span></header>
<div class="composition-studio"><div class="studio-ruler" aria-hidden="true"></div><section class="demo" aria-label="课堂表现散点分布图交互区域"><section id="atlasShell" class="atlas-shell" data-atlas-mode="brief"><header class="atlas-head"><div><span class="eyebrow">课堂表现 / ATLAS DOSSIER</span><h2>散点分布图样本图谱</h2><p>用图谱式样本页重新包裹主案例，分离样本索引、追踪视图、交接注释和现场记录。</p></div><div class="atlas-controls"><div class="atlas-modes"><button class="action primary" type="button" data-atlas-mode="brief">简报</button><button class="action" type="button" data-atlas-mode="trace">追踪</button><button class="action" type="button" data-atlas-mode="handoff">交接</button></div><output id="atlasState">等待建立样本</output></div></header><div class="atlas-body"><aside class="atlas-index"><ol class="atlas-chapters"><li><button type="button" data-atlas-card="0" aria-pressed="true"><span>01</span><strong>课堂表现提醒</strong><small>检查状态变化是否可见</small></button></li><li><button type="button" data-atlas-card="1" aria-pressed="false"><span>02</span><strong>课堂表现收藏</strong><small>确认键盘与点击入口一致</small></button></li><li><button type="button" data-atlas-card="2" aria-pressed="false"><span>03</span><strong>课堂表现概览</strong><small>观察布局在窄屏下是否回退</small></button></li><li><button type="button" data-atlas-card="3" aria-pressed="false"><span>04</span><strong>课堂表现计划</strong><small>记录当前复核结论</small></button></li></ol><label>版面倍率<input id="atlasZoom" type="range" min="82" max="132" value="100"><output id="atlasZoomValue">100%</output></label><label>采样焦点<select id="atlasFocus"><option value="0">课堂表现提醒</option><option value="1">课堂表现收藏</option><option value="2">课堂表现概览</option><option value="3">课堂表现计划</option></select></label><button id="atlasCapture" class="action primary" type="button">收录样本</button><dl class="atlas-meta"><div><dt>收录数</dt><dd id="atlasCount">0</dd></div><div><dt>当前焦点</dt><dd id="atlasCurrent">课堂表现提醒</dd></div><div><dt>复核模式</dt><dd id="atlasModeLabel">简报</dd></div></dl></aside><section class="atlas-stage"><div class="atlas-summary"><article data-active="true"><span>Sample</span><strong>课堂表现提醒</strong><p>检查状态变化是否可见</p></article><article><span>Trace</span><strong>课堂表现收藏</strong><p>确认键盘与点击入口一致</p></article><article><span>Signal</span><strong>课堂表现概览</strong><p>观察布局在窄屏下是否回退</p></article><article><span>Handoff</span><strong>课堂表现计划</strong><p>记录当前复核结论</p></article></div><div id="atlasCoreShell" class="atlas-core-shell"><div class="workflow-session"><header class="session-command"><div><span class="eyebrow">课堂表现 SESSION</span><h2>课堂表现计时台</h2></div><output id="workflowSessionClock">00:45</output><label>回合时长<input id="workflowSessionLength" type="range" min="15" max="90" step="15" value="45"><span>秒</span></label><button id="workflowSessionToggle" class="action primary" type="button">开始保存视图</button></header><div id="workflowSessionProgress" role="progressbar" aria-label="课堂表现进度" aria-valuemin="0" aria-valuemax="100" aria-valuenow="0"><i></i></div><section id="workflowCore" class="workflow-core session-stage" data-session-phase="ready" tabindex="-1"><!-- 11DZ_CORE_START:drawing-data-viz-scatter-plot --><div class="drawing-pattern drawing-pattern-5"><div class="canvas-shell"><canvas id="artboard" width="900" height="440" aria-label="散点分布图画布" aria-describedby="canvasDescription"></canvas><div class="canvas-tools panel"><span class="eyebrow">CANVAS MODE 6</span><h2>散点分布图</h2><label>复杂度 <input id="canvasAmount" type="range" min="4" max="28" value="25"></label><button id="redrawCanvas" class="action primary" type="button">重新绘制</button><p id="canvasDescription" class="muted">深色画布使用两种高对比色绘制散点分布图，复杂度滑块决定图形数量；画面完全在浏览器本地生成。</p></div></div><section class="drawing-controller scatter-controller"><header><span class="eyebrow">CLUSTER LAB</span><h3>课堂表现散点聚类</h3></header><label>聚类算法<select id="scatterClusterMode"><option value="density">密度分组</option><option value="distance">距离分组</option><option value="manual">手动分组</option></select></label><label>抖动幅度<input id="scatterJitter" type="range" min="0" max="30" value="12" data-core-bridge="drawing-data-viz-scatter-plot"><output id="scatterJitterValue">12</output></label><button id="scatterResample" class="action" type="button">重新采样</button><dl><div><dt>样本批次</dt><dd id="scatterBatch">1</dd></div><div><dt>簇数量</dt><dd id="scatterClusters">3</dd></div></dl></section></div><!-- 11DZ_CORE_END --></section><footer class="session-log"><strong id="workflowSessionScore">0 个交互检查点</strong><ol id="workflowSessionLaps" aria-label="回合记录"></ol></footer></div></div><ol id="atlasLog" class="atlas-log"><li>等待第一条图谱样本</li></ol></section></div></section><p id="status" class="status" role="status" aria-live="polite"></p></section></div>
</main>
<script>
'use strict';
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const scatterMode=document.querySelector('#scatterClusterMode');const scatterJitter=document.querySelector('#scatterJitter');const scatterModel=new Map([['batch',1],['clusters',3],['jitter',12]]);function renderScatterModel(){scatterModel.set('jitter',Number(scatterJitter.value));scatterModel.set('clusters',{density:3,distance:4,manual:2}[scatterMode.value]);document.querySelector('#scatterJitterValue').textContent=scatterModel.get('jitter');document.querySelector('#scatterBatch').textContent=scatterModel.get('batch');document.querySelector('#scatterClusters').textContent=scatterModel.get('clusters');canvas.dataset.drawingFactor=String(.65+scatterModel.get('clusters')*.15);canvas.dataset.drawingShift=String(scatterModel.get('batch')*19+scatterModel.get('jitter'));drawCanvas();}scatterMode.addEventListener('change',renderScatterModel);scatterJitter.addEventListener('input',renderScatterModel);document.querySelector('#scatterResample').addEventListener('click',()=>{scatterModel.set('batch',scatterModel.get('batch')+1);renderScatterModel();announce('散点样本已重新采集并聚类');});renderScatterModel();
/* 11DZ_CORE_SCRIPT_END */
const workflowBridgeSpec={"name":"drawing-data-viz-scatter-plot","selector":"[data-core-bridge=\"drawing-data-viz-scatter-plot\"]","mode":"range","key":"ArrowRight"};const workflowBridgeCore=document.querySelector('#workflowCore');const workflowBridgeControl=workflowBridgeCore.querySelector(workflowBridgeSpec.selector);if(!workflowBridgeControl)throw new Error('Missing core bridge: '+workflowBridgeSpec.name);const workflowBridgeControlledId=workflowBridgeControl.getAttribute('aria-controls');const workflowBridgeControlled=workflowBridgeControlledId?document.getElementById(workflowBridgeControlledId):null;workflowBridgeCore.dataset.workflowBridge=workflowBridgeSpec.name;workflowBridgeCore.dataset.workflowVersion='0';function workflowBridgeSerialize(){const visualNode=workflowBridgeCore.firstElementChild||workflowBridgeCore;const visual=getComputedStyle(visualNode);const outputs=[...workflowBridgeCore.querySelectorAll('output,[role="status"],[aria-live],meter,progress')].map(node=>node.textContent.trim()+'|'+node.getAttribute('aria-valuenow')+'|'+node.getAttribute('value'));const canvas=[...workflowBridgeCore.querySelectorAll('canvas')].map(node=>{try{return node.toDataURL().slice(-160);}catch{return 'canvas-unavailable';}});return JSON.stringify({html:workflowBridgeCore.innerHTML,status:statusOutput.textContent,outputs,canvas,visual:[visual.display,visual.visibility,visual.opacity,visual.transform,visual.filter,visual.backgroundColor,visual.width,visual.height],scroll:workflowBridgeSpec.mode==='scroll'?workflowBridgeControl.scrollTop:null});}let workflowBridgeLastEffect=workflowBridgeSerialize();function workflowBridgeSummary(){const label=(workflowBridgeControl.getAttribute('aria-label')||workflowBridgeControl.textContent||workflowBridgeControl.value||workflowBridgeSpec.name).trim().replace(/\s+/g,' ').slice(0,72);return label+' · 核心版本 '+workflowBridgeCore.dataset.workflowVersion;}function workflowBridgeCommit(){const effect=workflowBridgeSerialize();if(effect===workflowBridgeLastEffect)return {changed:false,summary:workflowBridgeSummary()};workflowBridgeLastEffect=effect;workflowBridgeCore.dataset.workflowVersion=String(Number(workflowBridgeCore.dataset.workflowVersion||0)+1);return {changed:true,summary:workflowBridgeSummary()};}function workflowBridgeScheduleCommit(){queueMicrotask(workflowBridgeCommit);setTimeout(workflowBridgeCommit,0);}workflowBridgeControl.addEventListener("input",workflowBridgeScheduleCommit);workflowBridgeControl.addEventListener('change',workflowBridgeScheduleCommit);const workflowBridgeStateTargets=new Set(workflowBridgeCore.querySelectorAll('dialog'));if(workflowBridgeControlled&&workflowBridgeCore.contains(workflowBridgeControlled))workflowBridgeStateTargets.add(workflowBridgeControlled);workflowBridgeStateTargets.forEach(target=>['close','cancel','toggle'].forEach(eventName=>target.addEventListener(eventName,workflowBridgeScheduleCommit)));function workflowBridgeActivate(){workflowBridgeControl.focus();const step=Number(workflowBridgeControl.step)||1;const min=workflowBridgeControl.min===''?-Infinity:Number(workflowBridgeControl.min);const max=workflowBridgeControl.max===''?Infinity:Number(workflowBridgeControl.max);let next=Math.min(max,Math.max(min,(Number(workflowBridgeControl.value)||0)+step));if(next===Number(workflowBridgeControl.value))next=Math.max(min,Number(workflowBridgeControl.value)-step);workflowBridgeControl.value=String(next);workflowBridgeControl.dispatchEvent(new Event('input',{bubbles:true}));workflowBridgeControl.dispatchEvent(new Event('change',{bubbles:true}));const result=workflowBridgeCommit();setTimeout(workflowBridgeCommit,0);return result;}function workflowBridgeReset(){workflowBridgeCore.dataset.workflowVersion='0';workflowBridgeLastEffect=workflowBridgeSerialize();}
const workflowSessionCore=document.querySelector('#workflowCore');const workflowSessionToggle=document.querySelector('#workflowSessionToggle');const workflowSessionLength=document.querySelector('#workflowSessionLength');const workflowSessionState={phase:'ready',elapsed:0,limit:Number(workflowSessionLength.value),checkpoints:[],timer:null};function workflowSessionFormat(seconds){return String(Math.floor(seconds/60)).padStart(2,'0')+':'+String(seconds%60).padStart(2,'0');}function workflowSessionDrive(){const percent=Math.min(100,Math.round(workflowSessionState.elapsed/workflowSessionState.limit*100));document.querySelector('#workflowSessionClock').textContent=workflowSessionFormat(Math.max(0,workflowSessionState.limit-workflowSessionState.elapsed));const progress=document.querySelector('#workflowSessionProgress');progress.setAttribute('aria-valuenow',String(percent));progress.querySelector('i').style.width=percent+'%';workflowSessionCore.dataset.sessionPhase=workflowSessionState.phase;document.querySelector('#workflowSessionScore').textContent=workflowSessionState.checkpoints.length+' 个交互检查点';}function workflowSessionLap(label){workflowSessionState.checkpoints.push({label,at:workflowSessionState.elapsed});const item=document.createElement('li');item.textContent=label+' · '+workflowSessionFormat(workflowSessionState.elapsed);document.querySelector('#workflowSessionLaps').append(item);workflowSessionDrive();}function workflowSessionStop(complete=false){clearInterval(workflowSessionState.timer);workflowSessionState.timer=null;workflowSessionState.phase=complete?'complete':'paused';workflowSessionToggle.textContent=complete?'重新开始':'继续回合';workflowSessionToggle.setAttribute('aria-pressed','false');workflowSessionDrive();announce(complete?'课堂表现回合完成':'回合已暂停');}function workflowSessionStart(){if(workflowSessionState.phase==='complete'){workflowSessionState.elapsed=0;workflowSessionState.checkpoints=[];document.querySelector('#workflowSessionLaps').replaceChildren();}workflowSessionState.phase='running';workflowSessionToggle.textContent='暂停回合';workflowSessionToggle.setAttribute('aria-pressed','true');const bridge=workflowBridgeActivate();workflowSessionLap(bridge.summary);clearInterval(workflowSessionState.timer);workflowSessionState.timer=setInterval(()=>{workflowSessionState.elapsed+=1;if(workflowSessionState.elapsed>=workflowSessionState.limit){workflowSessionStop(true);return;}workflowSessionDrive();},1000);workflowSessionDrive();announce('课堂表现回合已开始 · '+bridge.summary);}workflowSessionToggle.addEventListener('click',()=>workflowSessionState.phase==='running'?workflowSessionStop():workflowSessionStart());workflowSessionLength.addEventListener('input',()=>{workflowSessionState.limit=Number(workflowSessionLength.value);workflowSessionState.elapsed=Math.min(workflowSessionState.elapsed,workflowSessionState.limit);workflowSessionDrive();});workflowSessionCore.addEventListener('keydown',event=>{if(event.key==='Enter'||event.key===' '){workflowSessionLap('键盘操作');}});workflowSessionCore.addEventListener('click',event=>{if(event.target.closest('[data-core-bridge]'))workflowSessionLap('核心操作 · '+workflowBridgeSummary());});document.addEventListener('visibilitychange',()=>{if(document.hidden&&workflowSessionState.phase==='running')workflowSessionStop();});workflowSessionDrive();
workflowBridgeReset();
const atlasShell=document.querySelector('#atlasShell');const atlasState=document.querySelector('#atlasState');const atlasZoom=document.querySelector('#atlasZoom');const atlasZoomValue=document.querySelector('#atlasZoomValue');const atlasFocus=document.querySelector('#atlasFocus');const atlasCurrent=document.querySelector('#atlasCurrent');const atlasCount=document.querySelector('#atlasCount');const atlasModeLabel=document.querySelector('#atlasModeLabel');const atlasCards=[...document.querySelectorAll('[data-atlas-card]')];const atlasSummary=[...document.querySelectorAll('.atlas-summary article')];const atlasLog=document.querySelector('#atlasLog');const atlasModeButtons=[...atlasShell.querySelectorAll('[data-atlas-mode]')];const atlasNotes=["课堂表现提醒","课堂表现收藏","课堂表现概览","课堂表现计划"];const atlasCore=document.querySelector('#workflowCore');let atlasCaptures=0;function atlasSetActive(index){atlasCards.forEach((button,buttonIndex)=>button.setAttribute('aria-pressed',String(buttonIndex===index)));atlasSummary.forEach((card,cardIndex)=>{if(cardIndex===index)card.setAttribute('data-active','true');else card.removeAttribute('data-active');});atlasCurrent.textContent=atlasNotes[index]||atlasNotes[0]||'未命名焦点';}function atlasRender(reason){const version=atlasCore?.dataset.workflowVersion||'0';const zoom=Number(atlasZoom.value);const active=Math.min(atlasNotes.length-1,Number(atlasFocus.value)||0);atlasShell.style.setProperty('--atlas-zoom',String(zoom));atlasZoomValue.textContent=zoom+'%';atlasCount.textContent=String(atlasCaptures);atlasSetActive(active);atlasModeLabel.textContent={brief:'简报',trace:'追踪',handoff:'交接'}[atlasShell.dataset.atlasMode]||'简报';atlasState.textContent=reason+' · 核心版本 '+version;}atlasModeButtons.forEach(button=>button.addEventListener('click',()=>{atlasModeButtons.forEach(item=>item.classList.toggle('primary',item===button));atlasShell.dataset.atlasMode=button.dataset.atlasMode;atlasRender('已切换到'+button.textContent);announce('图谱模式：'+button.textContent);}));atlasCards.forEach((button,index)=>button.addEventListener('click',()=>{atlasFocus.value=String(index);atlasRender('已切换样本焦点');announce('图谱焦点：'+atlasNotes[index]);}));atlasZoom.addEventListener('input',()=>{atlasRender('版面倍率已更新');announce('图谱倍率 '+atlasZoom.value+'%');});atlasFocus.addEventListener('change',()=>{atlasRender('已切换采样焦点');announce('采样焦点：'+atlasNotes[Number(atlasFocus.value)||0]);});document.querySelector('#atlasCapture').addEventListener('click',()=>{const index=Math.min(atlasNotes.length-1,Number(atlasFocus.value)||0);const note=atlasNotes[index]||atlasNotes[0]||'未命名焦点';const version=atlasCore?.dataset.workflowVersion||'0';atlasCaptures+=1;const item=document.createElement('li');item.textContent='样本 '+atlasCaptures+' · '+note+' · 核心版本 '+version;const empty=atlasLog.querySelector('li')?.textContent==='等待第一条图谱样本';if(empty)atlasLog.replaceChildren(item);else atlasLog.prepend(item);while(atlasLog.children.length>6)atlasLog.lastElementChild.remove();atlasRender('已收录样本 '+atlasCaptures);announce('已收录样本 '+atlasCaptures+' · '+note);});atlasCore?.addEventListener('focusin',()=>atlasRender('主案例获得焦点'));atlasCore?.addEventListener('click',()=>atlasRender('主案例发生交互'));atlasRender('等待建立样本');
</script>
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