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G17 · 动态流图

实时滚动序列的 Glance 真实参考实现。示例结论为“并发用户，实时流动”，副标题已经把图例、单位或时间口径写在图旁：每 300 毫秒加入一个新读数 · 窗口保留最近 50 个点 · 点击重新开始

技术档案

项目 约定
数据形状 实时滚动序列
场合 直播/大屏
读者时间 动画
渲染引擎 ECharts
交互与动效 滚入视野初始化，点击图表重播；保留原 gallery 的 tooltip 与动画
示例来源行 DYNAMIC DATA · MONO-FANCY4 · LIVE OPS

实现与使用边界

  • 页面直接复用 gallery 中 “Concurrent users, streaming” 的卡片结构和同名渲染块，没有按截图重新绘制。
  • 标题、副标题、图形、来源行四件套保持原样；数据编码、比例关系、灰阶和动画节奏由原实现决定。
  • 使用时只替换数据与文案，并保持“实时滚动序列”这一数据契约；若数据本体改变，应回到总目录重新选型。
  • 颜色限于 Mono 灰阶，面积编码继续使用平方根换算；柱长、位置与角度编码不得断轴或视觉夸大。

模板来源：Lieflat Charts G17 Dynamic Stream，真实骨架取自 templates/glance-gallery.html 的 “Concurrent users, streaming” 卡片与对应渲染块。

g17-dynamic-stream.html —— 自包含单页源码 
<!doctype html>
<html lang="zh-CN">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width,initial-scale=1" />
<title>Lieflat Charts — G17 动态流图</title>
<script src="https://cdn.jsdelivr.net/npm/chart.js@4"></script>
<script src="https://cdn.jsdelivr.net/npm/echarts@6/dist/echarts.min.js"></script>
<link rel="stylesheet" href="../../../../vendor/fonts/fonts.css">
<style>
  :root{--bg:#F0EFEB;--dark:#1C1C1A;--ink:#1C1C1A;--muted:#8F8E88;--faint:#C6C5BF;--grid:#DEDDD6}
  *{margin:0;padding:0;box-sizing:border-box}
  body{background:var(--bg);font-family:'Inter',sans-serif;color:var(--ink);padding:40px;-webkit-font-smoothing:antialiased}
  .grid2{display:grid;grid-template-columns:1fr 1fr;gap:22px;max-width:1400px;margin:0 auto}
  .card{background:var(--bg);border-radius:24px;padding:28px 28px 20px}
  .card.dark{background:var(--dark);color:#F0EFEB}
  .card.dark .sub{color:#8F8E88}
  .card.dark .src{color:#55554F}
  h2{font-weight:700;font-size:16.5px;letter-spacing:-.02em;margin-bottom:3px}
  .sub{font-size:11.5px;color:var(--muted);margin-bottom:14px}
  .src{font-size:9.5px;color:var(--faint);margin-top:10px;letter-spacing:.08em;font-weight:500}
  .ch{height:320px}
  .wrap{position:relative;height:320px}
  svg text{font-family:'Inter',sans-serif}
  .pop{transform-box:fill-box;transform-origin:center;animation:pop .5s cubic-bezier(.2,.7,.3,1.3) both}
  @keyframes pop{from{transform:scale(0)}to{transform:none}}

  .pagehead{max-width:1400px;margin:0 auto 26px;padding:0 4px}
  .pagehead h1{font-size:22px;letter-spacing:-.02em;font-weight:800}
  .pagehead p{font-size:12px;color:#8F8E88;margin-top:5px;line-height:1.7}
  .pagehead .badge{margin:0 2px}
  .badge{display:inline-block;font-size:9px;font-weight:700;letter-spacing:.08em;
    padding:3px 10px;border-radius:99px;margin-bottom:10px}
  .badge.del{background:#1C1C1A;color:#F0EFEB}
  .badge.pick{border:1.5px solid #1C1C1A;color:#1C1C1A}
  .badge.pair{border:1px dashed #B0AFA9;color:#8F8E88}
  .card.dark .badge.del{background:#F0EFEB;color:#1C1C1A}
  .card.dark .badge.pick{border-color:#F0EFEB;color:#F0EFEB}
  .card.dark .badge.pair{border-color:#55554F;color:#8F8E88}

  html,body{min-height:100%;margin:0}
  body{display:grid;place-items:center;padding:28px}
  .pagehead{display:none}
  .grid2{display:block;width:min(100%,920px);max-width:920px;margin:0 auto}
  .card,.card.wide{display:block;width:100%;min-height:520px;padding:38px 42px 24px}
  .card .split{grid-template-columns:minmax(190px,250px) 1fr}
  .wiki-code{display:inline-block;margin-bottom:12px;padding:4px 11px;border:1px dashed #B0AFA9;border-radius:99px;color:#8F8E88;font-size:10px;font-weight:700;letter-spacing:.08em}
  .card.dark .wiki-code{border-color:#55554F}
  @media(max-width:620px){
    body{padding:10px}
    .card,.card.wide{min-height:500px;padding:26px 18px 20px}
    .card .split{display:block}
    .card .note,.card .legend{display:none}
  }
</style>

</head>
<body>
<main class="grid2">
<div class="card">
    <span class="wiki-code">GLANCE 快读型 · G17</span>
    <h2>并发用户，实时流动</h2>
    <div class="sub">每 300 毫秒加入一个新读数 · 窗口保留最近 50 个点 · 点击重新开始</div>
    <div class="ch" id="stream"></div>
    <div class="src">DYNAMIC DATA · MONO-FANCY4 · LIVE OPS</div>
  </div>
</main>
<script>
// ── shared Mono tokens ──
const INK='#1C1C1A',PAPER='#F0EFEB',MUTED='#8F8E88',GRID='#DEDDD6';
const L=['#1C1C1A','#4A4944','#6A6963','#8F8E88','#B0AFA9','#C6C5BF'];
const LAD=['#1C1C1A','#4A4944','#8F8E88','#B0AFA9','#D8D7D1'];
const tipLight={backgroundColor:INK,borderWidth:0,textStyle:{color:PAPER,fontFamily:'Inter',fontSize:12},padding:[10,14]};
const tipDark={backgroundColor:PAPER,borderWidth:0,textStyle:{color:INK,fontFamily:'Inter',fontSize:12},padding:[10,14]};
const rnd=(i,k)=>((i*73856093)^(k*19349663))%1000/1000; // deterministic

// ── unified reveal: every chart waits to be scrolled into view; click replays.
//    fn charts manage their own timers via keep(); they're cleared on replay.
const timers={};
const obsReveal=(id,fn)=>{
  const el=document.getElementById(id);
  const go=()=>{(timers[id]||[]).forEach(clearInterval);timers[id]=[];fn(el)};
  const io=new IntersectionObserver(es=>{
    if(es[0].isIntersecting){go();io.disconnect()}
  },{threshold:.35});
  io.observe(el);
  el.style.cursor='pointer';
  el.addEventListener('click',go);
};
const keep=(id,t)=>{(timers[id]=timers[id]||[]).push(t)};
const eReveal=(id,opt)=>obsReveal(id,el=>{
  const g=echarts.getInstanceByDom(el)||echarts.init(el);
  g.clear();g.setOption(opt);
});
const cjs={};
const cReveal=(id,mkCfg)=>obsReveal(id,el=>{
  cjs[id]?.destroy();
  cjs[id]=new Chart(el,mkCfg());
});

Chart.defaults.color=MUTED;
Chart.defaults.font.family='Inter';
Chart.defaults.font.size=10.5;
Chart.defaults.borderColor=GRID;
Chart.defaults.plugins.legend.display=false;
Chart.defaults.plugins.tooltip.backgroundColor=INK;
Chart.defaults.plugins.tooltip.titleColor='#F0EFEB';
Chart.defaults.plugins.tooltip.bodyColor='#A5A49E';
Chart.defaults.plugins.tooltip.padding=12;
Chart.defaults.plugins.tooltip.cornerRadius=12;
Chart.defaults.plugins.tooltip.displayColors=false;

// ════ mono-fancy4 · 2: dynamic data stream ════
(()=>{
const WIN=50;
obsReveal('stream',el=>{
  const g=echarts.getInstanceByDom(el)||echarts.init(el);
  g.clear();
  let t=0,v=64;
  const data=[];
  for(;t<WIN;t++){v=Math.max(30,v+(rnd(t+1,7)-.48)*9);data.push(Math.round(v))}
  const draw=()=>g.setOption({
    animation:true,animationDuration:0,animationDurationUpdate:260,animationEasingUpdate:'linear',
    tooltip:{...tipLight,valueFormatter:x=>x+'k users'},
    grid:{left:14,right:58,top:44,bottom:20},
    xAxis:{type:'category',data:data.map((_,i)=>t-WIN+i),boundaryGap:false,
      axisLine:{show:false},axisTick:{show:false},axisLabel:{show:false},splitLine:{show:false}},
    yAxis:{show:false,min:20,max:130},
    series:[{
      type:'line',data:[...data],smooth:.45,symbol:'none',
      lineStyle:{color:INK,width:2.4},
      endLabel:{show:true,fontFamily:'Inter',fontSize:14,fontWeight:800,color:INK,
        formatter:p=>p.value+'k'},
      areaStyle:{color:{type:'linear',x:0,y:0,x2:0,y2:1,
        colorStops:[{offset:0,color:'rgba(28,28,26,.16)'},{offset:1,color:'rgba(28,28,26,0)'}]}},
    }],
    graphic:[{type:'group',left:16,top:10,children:[
      {type:'circle',shape:{cx:5,cy:5,r:4},style:{fill:'#4A4944'}},
      {type:'text',style:{text:'LIVE',x:16,y:0,font:'800 11px Inter',fill:INK}},
    ]}],
  });
  draw();
  keep('stream',setInterval(()=>{
    v=Math.max(30,Math.min(125,v+(rnd(t+1,7)-.48)*9));
    data.push(Math.round(v));data.shift();t++;
    draw();
  },300));
});
})();
</script>
</body>
</html>