Monitor Chart Drawing: Hairline Animation

Monitor Chart Drawing

A hairline isometric monitor on its stand: a line chart wipes across the screen from left to right, then the accent end point pops on a spring. The chart lives in the screen plane, so it stays square.

Also known as: hairline isometric, isometric monitor animation, line chart draw animation css.

Color Base size 16px Dark background

HTML

<div class="hln-monitor-chart" role="img" aria-label="A monitor drawing a line chart">
  <svg viewBox="-110 -60 220 120" aria-hidden="true">
    <g transform="translate(-12.4 6.2) scale(1.08)">
      <g><polygon points="-2.24,17.6 -2.16,17.19 -1.92,16.79 -1.53,16.42 -1,16.1 9,11.1 9.64,10.84 10.38,10.64 11.17,10.52 12,10.48 12.83,10.52 13.62,10.64 14.36,10.84 15,11.1 31,19.1 31.53,19.42 31.92,19.79 32.16,20.19 32.24,20.6 32.24,23 32.16,23.41 31.92,23.81 31.53,24.18 31,24.5 21,29.5 20.36,29.76 19.62,29.96 18.83,30.08 18,30.12 17.17,30.08 16.38,29.96 15.64,29.76 15,29.5 -1,21.5 -1.53,21.18 -1.92,20.81 -2.16,20.41 -2.24,20"/><polygon points="31,19.1 31.53,19.42 31.92,19.79 32.16,20.19 32.24,20.6 32.16,21.01 31.92,21.41 31.53,21.78 31,22.1 21,27.1 20.36,27.36 19.62,27.56 18.83,27.68 18,27.72 17.17,27.68 16.38,27.56 15.64,27.36 15,27.1 -1,19.1 -1.53,18.78 -1.92,18.41 -2.16,18.01 -2.24,17.6 -2.16,17.19 -1.92,16.79 -1.53,16.42 -1,16.1 9,11.1 9.64,10.84 10.38,10.64 11.17,10.52 12,10.48 12.83,10.52 13.62,10.64 14.36,10.84 15,11.1"/></g>
      <g><polygon points="13,17.1 19,20.1 19,0.1 13,-2.9"/><polygon points="22,18.6 19,20.1 19,0.1 22,-1.4"/><polygon points="16,-4.4 22,-1.4 19,0.1 13,-2.9"/></g>
      <g><polygon points="-18,-38.5 -17.95,-38.96 -17.81,-39.36 -17.58,-39.68 -17.27,-39.9 -14.27,-41.4 -13.89,-41.52 -13.46,-41.54 -12.99,-41.45 -12.5,-41.25 38.5,-15.75 38.99,-15.46 39.46,-15.08 39.89,-14.63 40.27,-14.13 40.58,-13.6 40.81,-13.05 40.95,-12.51 41,-12 41,17 40.95,17.46 40.81,17.86 40.58,18.18 40.27,18.4 37.27,19.9 36.89,20.02 36.46,20.04 35.99,19.95 35.5,19.75 -15.5,-5.75 -15.99,-6.04 -16.46,-6.42 -16.89,-6.87 -17.27,-7.37 -17.58,-7.9 -17.81,-8.45 -17.95,-8.99 -18,-9.5"/><polygon points="35.5,19.75 35.99,19.95 36.46,20.04 36.89,20.02 37.27,19.9 37.58,19.68 37.81,19.36 37.95,18.96 38,18.5 38,-10.5 37.95,-11.01 37.81,-11.55 37.58,-12.1 37.27,-12.63 36.89,-13.13 36.46,-13.58 35.99,-13.96 35.5,-14.25 -15.5,-39.75 -15.99,-39.95 -16.46,-40.04 -16.89,-40.02 -17.27,-39.9 -17.58,-39.68 -17.81,-39.36 -17.95,-38.96 -18,-38.5 -18,-9.5 -17.95,-8.99 -17.81,-8.45 -17.58,-7.9 -17.27,-7.37 -16.89,-6.87 -16.46,-6.42 -15.99,-6.04 -15.5,-5.75"/></g>
      <g transform="matrix(1 .5 0 -1 -18 -7)"><rect class="hln-monitor-chart-l" x="2.5" y="2.5" width="51" height="29" rx="1"/><polyline class="hln-monitor-chart-ln" points="7,9 13,12.5 19,10.5 25,16 31,14.5 37,20.5 43,19 49,26"/><rect class="hln-monitor-chart-w hln-monitor-chart-wipe" x="6" y="7.6" width="44.5" height="20.6"/><line class="hln-monitor-chart-l" x1="7" y1="11" x2="49" y2="11"/><line class="hln-monitor-chart-l" x1="7" y1="17" x2="49" y2="17"/><line class="hln-monitor-chart-l" x1="7" y1="23" x2="49" y2="23"/><line class="hln-monitor-chart-l" x1="7" y1="7" x2="49" y2="7"/><line x1="7" y1="29" x2="16" y2="29"/><rect class="hln-monitor-chart-l" x="42" y="28" width="7" height="2" rx="1"/><g class="hln-monitor-chart-dot"><circle class="hln-monitor-chart-af" cx="49" cy="26" r="1.3"/></g></g>
    </g>
  </svg>
</div>

CSS

.hln-monitor-chart {
  --c: var(--hln-color, #ff4f2e);
  font-size: var(--hln-size, 16px);
  position: relative;
  display: grid;
  place-items: center;
  width: 22em;
  height: 12em;
  border-radius: 0.75em;
  background: #f6f5f1;
  overflow: hidden;
}
.hln-monitor-chart svg {
  width: 100%;
  height: 100%;
  overflow: visible;
  fill: #ffffff;
  stroke: #1c1d21;
  stroke-width: 1.25;
  stroke-linejoin: round;
  stroke-linecap: round;
}
.hln-monitor-chart svg * {
  vector-effect: non-scaling-stroke;
}
.hln-monitor-chart polyline {
  fill: none;
}
.hln-monitor-chart .hln-monitor-chart-l {
  stroke: #9a9ca3;
}
.hln-monitor-chart .hln-monitor-chart-w {
  fill: #ffffff;
  stroke: none;
}
.hln-monitor-chart .hln-monitor-chart-af {
  fill: var(--c);
  stroke: var(--c);
}
.hln-monitor-chart .hln-monitor-chart-wipe {
  transform-box: fill-box;
  transform-origin: 100% 50%;
  transform: scaleX(0);
  animation: hln-monitor-chart-wipe 5.5s infinite;
}
.hln-monitor-chart .hln-monitor-chart-ln {
  animation: hln-monitor-chart-ln 5.5s infinite;
}
.hln-monitor-chart .hln-monitor-chart-dot {
  transform-box: fill-box;
  transform-origin: 50% 50%;
  animation: hln-monitor-chart-dot 5.5s infinite;
}
@keyframes hln-monitor-chart-wipe {
  0% { transform: scaleX(1); }
  9.09% { transform: scaleX(1); animation-timing-function: cubic-bezier(.65,0,.35,1); }
  34.55% { transform: scaleX(0); }
  89.09% { transform: scaleX(0); }
  89.45% { transform: scaleX(1); }
  100% { transform: scaleX(1); }
}
@keyframes hln-monitor-chart-ln {
  0% { opacity: 1; }
  83.64% { opacity: 1; animation-timing-function: cubic-bezier(.65,0,.35,1); }
  88.18% { opacity: 0; }
  90% { opacity: 0; }
  90.91% { opacity: 1; }
  100% { opacity: 1; }
}
@keyframes hln-monitor-chart-dot {
  0% { transform: scale(0); }
  32.73% { transform: scale(0); animation-timing-function: linear(0, 0.035, 0.125, 0.247, 0.384, 0.524, 0.655, 0.771, 0.87, 0.948, 1.008, 1.05, 1.077, 1.091, 1.095, 1.091, 1.083, 1.071, 1.058, 1.045, 1.032, 1.021, 1.012, 1.005, 0.999, 0.995, 0.993, 0.991, 0.991, 0.991, 0.992, 0.993, 1); }
  43.64% { transform: scale(1); }
  83.64% { transform: scale(1); animation-timing-function: cubic-bezier(.65,0,.35,1); }
  88.18% { transform: scale(0); }
  100% { transform: scale(0); }
}
@media (prefers-reduced-motion: reduce) {
  .hln-monitor-chart * {
    animation: none !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hln-monitor-chart, .hln-monitor-chart *, .hln-monitor-chart::before, .hln-monitor-chart::after, .hln-monitor-chart *::before, .hln-monitor-chart *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

Customizing this snippet

Color: set --hln-color on the element or a parent. Currently previewing #3b82f6.
Base size: set --hln-size. Every other dimension is in em, so the whole thing scales together. Currently previewing 16px.
Speed: change the duration on the transition or animation shorthand. Staggered delays are relative, so they keep their rhythm.
Reduced motion: the rule at the end of the CSS turns the motion off for people who asked their OS for less of it. Keep it.

Monitor Chart Drawing

HTML

CSS

Customizing this snippet

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