swirling circles experiment

css screen saver style animation transform rotate translate

by trentHarlem

HTML

<div class="grid-container">
  <div class="canvas grid-item tl">
    <div class="circle is-first"></div>
    <div class="circle is-second"></div>
    <div class="circle is-third"></div>
    <div class="circle is-fourth"></div>
    <div class="circle is-fifth"></div>
    <div class="circle is-sixth"></div>
    <div class="circle is-seventh"></div>
    <div class="circle is-eighth"></div>
    <div class="meetingPoint"></div>
  </div>

  <div class="canvas grid-item tr">
    <div class="circle is-first"></div>
    <div class="circle is-second"></div>
    <div class="circle is-third"></div>
    <div class="circle is-fourth"></div>
    <div class="circle is-fifth"></div>
    <div class="circle is-sixth"></div>
    <div class="circle is-seventh"></div>
    <div class="circle is-eighth"></div>
    <div class="meetingPoint"></div>
  </div>

  <div class="center">
    <div class="canvas grid-item bl">
      <div class="circle is-first"></div>
      <div class="circle is-second"></div>
      <div class="circle is-third"></div>
      <div class="circle is-fourth"></div>
      <div class="circle is-fifth"></div>
      <div class="circle is-sixth"></div>
      <div class="circle is-seventh"></div>
      <div class="circle is-eighth"></div>
      <div class="meetingPoint"></div>
    </div>
  </div>


  <div class="canvas grid-item br">
    <div class="circle is-first"></div>
    <div class="circle is-second"></div>
    <div class="circle is-third"></div>
    <div class="circle is-fourth"></div>
    <div class="circle is-fifth"></div>
    <div class="circle is-sixth"></div>
    <div class="circle is-seventh"></div>
    <div class="circle is-eighth"></div>
    <div class="meetingPoint"></div>
  </div>

  <div class="canvas5 grid-item c">
    <div class="circle is-first"></div>
    <div class="circle is-second"></div>
    <div class="circle is-third"></div>
    <div class="circle is-fourth"></div>
    <div class="circle is-fifth"></div>
    <div class="circle is-sixth"></div>
   ...

CSS

/* credit: https://codepen.io/juan-antonio-ledesma/pen/MWZNvwM */

:root {
  --background-color: #1b1b2c;
  --main-color: #0ff;
  --main-color-2: #00f;
  --meeting-point-color: #7fffff;
  --canvas-size: 68vmin;
  --canvas-max-size: 500px;
  --circle-size: 8vmin;
  --animation-duration: 30000ms;
  --rotate-duration: 9000ms;
  --blur-amount: 0.5rem;
}

body {
  margin: 0;
  /* display: grid; */
  /* place-items: center; */
  min-height: 100vh;
  background-color: var(--background-color);
}


/* .container {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: 1fr 1fr 1fr;
grid-template-areas:
    "tl none tr"
    "none c none"
    "bl none br";
} */

.c {
   grid-area: c;
}

.canvas {
  width: var(--canvas-size);
  height: var(--canvas-size);
  max-width: var(--canvas-max-size);
  max-height: var(--canvas-max-size);
  animation: rotate var(--rotate-duration) linear infinite;
  filter: blur(var(--blur-amount));
}

.tl {
  grid-area: tl;
  animation: rotate var(--rotate-duration) linear infinite;
}

.tr {
  grid-area: tr;
  animation: rotate var(--rotate-duration) ease-in-out infinite both;
}

.bl {
  grid-area: bl;
  animation: rotate var(--rotate-duration) linear infinite;
}

.br {
  grid-area: br;
  animation: rotate var(--rotate-duration) linear infinite;
}

/* .canvas3,
.canvas4 {
  display: grid;
  position: relative;
  width: var(--canvas-size);
  height: var(--canvas-size);
  max-width: var(--canvas-max-size);
  max-height: var(--canvas-max-size);
  animation: rotate var(--rotate-duration) linear infinite;
  filter: blur(var(--blur-amount));
} */

@keyframes rotate {
  0% {
    transform: rotate(0deg);
    filter: blur(var(--blur-amount));
  }

  50% {
    filter: blur(0rem)
  }

  100% {
    transform: rotate(359deg);
    filter: blur(var(--blur-amount));
  }
}


.circle {
  position: absolute;
  width: var(--circle-size);
  height: var(--circle-size);
  background-color: var(--main-color2);
  border-radius: 50%;
  box-shadow: 0 0...

JavaScript

/* const canvas = document.getElementById('canvas') */
/* const ctx = canvas.getContext("2d") */
/* ctx.globalCompositeOperation = "overlay"; */