markdown 带有anime.js的SVG球体动画

Posted 2021-05-05

<div class="animation-wrapper">
  <div class="sphere-animation">
    <svg class="sphere" viewBox="0 0 440 440" stroke="rgba(80,80,80,.35)">
      <defs>
        <linearGradient id="sphereGradient" x1="5%" x2="5%" y1="0%" y2="15%">
          <stop stop-color="#373734" offset="0%"/>
          <stop stop-color="#242423" offset="50%"/>
          <stop stop-color="#0D0D0C" offset="100%"/>
        </linearGradient>
      </defs>
      <path d="M361.604 361.238c-24.407 24.408-51.119 37.27-59.662 28.727-8.542-8.543 4.319-35.255 28.726-59.663 24.408-24.407 51.12-37.269 59.663-28.726 8.542 8.543-4.319 35.255-28.727 59.662z"/>
      <path d="M360.72 360.354c-35.879 35.88-75.254 54.677-87.946 41.985-12.692-12.692 6.105-52.067 41.985-87.947 35.879-35.879 75.254-54.676 87.946-41.984 12.692 12.692-6.105 52.067-41.984 87.946z"/>
      <path d="M357.185 356.819c-44.91 44.91-94.376 68.258-110.485 52.149-16.11-16.11 7.238-65.575 52.149-110.485 44.91-44.91 94.376-68.259 110.485-52.15 16.11 16.11-7.239 65.576-52.149 110.486z"/>
      <path d="M350.998 350.632c-53.21 53.209-111.579 81.107-130.373 62.313-18.794-18.793 9.105-77.163 62.314-130.372 53.209-53.21 111.579-81.108 130.373-62.314 18.794 18.794-9.105 77.164-62.314 130.373z"/>
      <path d="M343.043 342.677c-59.8 59.799-125.292 91.26-146.283 70.268-20.99-20.99 10.47-86.483 70.269-146.282 59.799-59.8 125.292-91.26 146.283-70.269 20.99 20.99-10.47 86.484-70.27 146.283z"/>
      <path d="M334.646 334.28c-65.169 65.169-136.697 99.3-159.762 76.235-23.065-23.066 11.066-94.593 76.235-159.762s136.697-99.3 159.762-76.235c23.065 23.065-11.066 94.593-76.235 159.762z"/>
      <path d="M324.923 324.557c-69.806 69.806-146.38 106.411-171.031 81.76-24.652-24.652 11.953-101.226 81.759-171.032 69.806-69.806 146.38-106.411 171.031-81.76 24.652 24.653-11.953 101.226-81.759 171.032z"/>
      <path d="M312.99 312.625c-73.222 73.223-153.555 111.609-179.428 85.736-25.872-25.872 12.514-106.205 85.737-179.428s153.556-111.609 179.429-85.737c25.872 25.873-12.514 106.205-85.737 179.429z"/>
      <path d="M300.175 299.808c-75.909 75.909-159.11 115.778-185.837 89.052-26.726-26.727 13.143-109.929 89.051-185.837 75.908-75.908 159.11-115.778 185.837-89.051 26.726 26.726-13.143 109.928-89.051 185.836z"/>
      <path d="M284.707 284.34c-77.617 77.617-162.303 118.773-189.152 91.924-26.848-26.848 14.308-111.534 91.924-189.15C265.096 109.496 349.782 68.34 376.63 95.188c26.849 26.849-14.307 111.535-91.923 189.151z"/>
      <path d="M269.239 267.989c-78.105 78.104-163.187 119.656-190.035 92.807-26.849-26.848 14.703-111.93 92.807-190.035 78.105-78.104 163.187-119.656 190.035-92.807 26.849 26.848-14.703 111.93-92.807 190.035z"/>
      <path d="M252.887 252.52C175.27 330.138 90.584 371.294 63.736 344.446 36.887 317.596 78.043 232.91 155.66 155.293 233.276 77.677 317.962 36.521 344.81 63.37c26.85 26.848-14.307 111.534-91.923 189.15z"/>
      <path d="M236.977 236.61C161.069 312.52 77.867 352.389 51.14 325.663c-26.726-26.727 13.143-109.928 89.052-185.837 75.908-75.908 159.11-115.777 185.836-89.05 26.727 26.726-13.143 109.928-89.051 185.836z"/>
      <path d="M221.067 220.7C147.844 293.925 67.51 332.31 41.639 306.439c-25.873-25.873 12.513-106.206 85.736-179.429C200.6 53.786 280.931 15.4 306.804 41.272c25.872 25.873-12.514 106.206-85.737 179.429z"/>
      <path d="M205.157 204.79c-69.806 69.807-146.38 106.412-171.031 81.76-24.652-24.652 11.953-101.225 81.759-171.031 69.806-69.807 146.38-106.411 171.031-81.76 24.652 24.652-11.953 101.226-81.759 171.032z"/>
      <path d="M189.247 188.881c-65.169 65.169-136.696 99.3-159.762 76.235-23.065-23.065 11.066-94.593 76.235-159.762s136.697-99.3 159.762-76.235c23.065 23.065-11.066 94.593-76.235 159.762z"/>
      <path d="M173.337 172.971c-59.799 59.8-125.292 91.26-146.282 70.269-20.991-20.99 10.47-86.484 70.268-146.283 59.8-59.799 125.292-91.26 146.283-70.269 20.99 20.991-10.47 86.484-70.269 146.283z"/>
      <path d="M157.427 157.061c-53.209 53.21-111.578 81.108-130.372 62.314-18.794-18.794 9.104-77.164 62.313-130.373 53.21-53.209 111.58-81.108 130.373-62.314 18.794 18.794-9.105 77.164-62.314 130.373z"/>
      <path d="M141.517 141.151c-44.91 44.91-94.376 68.259-110.485 52.15-16.11-16.11 7.239-65.576 52.15-110.486 44.91-44.91 94.375-68.258 110.485-52.15 16.109 16.11-7.24 65.576-52.15 110.486z"/>
      <path d="M125.608 125.241c-35.88 35.88-75.255 54.677-87.947 41.985-12.692-12.692 6.105-52.067 41.985-87.947C115.525 43.4 154.9 24.603 167.592 37.295c12.692 12.692-6.105 52.067-41.984 87.946z"/>
      <path d="M109.698 109.332c-24.408 24.407-51.12 37.268-59.663 28.726-8.542-8.543 4.319-35.255 28.727-59.662 24.407-24.408 51.12-37.27 59.662-28.727 8.543 8.543-4.319 35.255-28.726 59.663z"/>
    </svg>
  </div>
</div>

function fitElementToParent(el, padding) {
  var timeout = null;
  function resize() {
    if (timeout) clearTimeout(timeout);
    anime.set(el, {scale: 1});
    var pad = padding || 0;
    var parentEl = el.parentNode;
    var elOffsetWidth = el.offsetWidth - pad;
    var parentOffsetWidth = parentEl.offsetWidth;
    var ratio = parentOffsetWidth / elOffsetWidth;
    timeout = setTimeout(anime.set(el, {scale: ratio}), 10);
  }
  resize();
  window.addEventListener('resize', resize);
}

var sphereAnimation = (function() {

  var sphereEl = document.querySelector('.sphere-animation');
  var spherePathEls = sphereEl.querySelectorAll('.sphere path');
  var pathLength = spherePathEls.length;
  var hasStarted = false;
  var aimations = [];

  fitElementToParent(sphereEl);

  var breathAnimation = anime({
    begin: function() {
      for (var i = 0; i < pathLength; i++) {
        aimations.push(anime({
          targets: spherePathEls[i],
          stroke: {value: ['rgba(255,75,75,1)', 'rgba(80,80,80,.35)'], duration: 500},
          translateX: [2, -4],
          translateY: [2, -4],
          easing: 'easeOutQuad',
          autoplay: false
        }));
      }
    },
    update: function(ins) {
      aimations.forEach(function(animation, i) {
        var percent = (1 - Math.sin((i * .35) + (.0022 * ins.currentTime))) / 2;
        animation.seek(animation.duration * percent);
      });
    },
    duration: Infinity,
    autoplay: false
  });

  var introAnimation = anime.timeline({
    autoplay: false
  })
  .add({
    targets: spherePathEls,
    strokeDashoffset: {
      value: [anime.setDashoffset, 0],
      duration: 3900,
      easing: 'easeInOutCirc',
      delay: anime.stagger(190, {direction: 'reverse'})
    },
    duration: 2000,
    delay: anime.stagger(60, {direction: 'reverse'}),
    easing: 'linear'
  }, 0);

  var shadowAnimation = anime({
      targets: '#sphereGradient',
      x1: '25%',
      x2: '25%',
      y1: '0%',
      y2: '75%',
      duration: 30000,
      easing: 'easeOutQuint',
      autoplay: false
    }, 0);

  function init() {
    introAnimation.play();
    breathAnimation.play();
    shadowAnimation.play();
  }
  
  init();

})();

<script src="https://codepen.io/juliangarnier/pen/75efae7724dbc3c055e918057fc4aca5"></script>

body {
  display: flex;
  justify-content: center;
  align-items: center;
  position: absolute;
  width: 100%;
  height: 100vh;
}

.animation-wrapper {
  width: 50%;
  padding-bottom: 50%;
}

.sphere-animation {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 580px;
  height: 580px;
  margin: -290px 0 0 -290px;
}

.sphere path {
  fill: url(#sphereGradient);
  stroke-width: 1px;
  stroke: rgba(80,80,80,.35);
  backface-visibility: hidden;
}

@media (min-width: 500px) {
  .sphere path {
    stroke-width: .4px;
  }
}

<link href="https://codepen.io/juliangarnier/pen/75efae7724dbc3c055e918057fc4aca5" rel="stylesheet" />

SVG sphere animation with anime.js
----------------------------------
Made for https://animejs.com

A [Pen](https://codepen.io/juliangarnier/pen/LMrRNW) by [Julian Garnier](https://codepen.io/juliangarnier) on [CodePen](https://codepen.io).

[License](https://codepen.io/juliangarnier/pen/LMrRNW/license).