科技感十足的大波浪动画（three.js）

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no" />
  <title>大波浪动画</title>
  <style type="text/css">
  body {
    margin: 0;
    background: #203260;
    overflow: hidden;
  }
  </style>
</head>

<body>
  <div id="m-points"></div>
  <script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.js"></script>
  <script src="https://cdn.bootcss.com/three.js/r56/three.js"></script>
  <script type="text/javascript">
  var SEPARATION = 100,
    AMOUNTX = 50,
    AMOUNTY = 50;

  var container;
  var camera,
    scene,
    renderer;

  var particles,
    particle,
    count = 0;

  var mouseX = 0,
    mouseY = 0;

  var windowHalfX = window.innerWidth / 2;
  var windowHalfY = window.innerHeight / 2;


  function init(dom) {
    container = dom
    camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 1, 10000);
    camera.position.z = 1000;
    scene = new THREE.Scene();
    particles = new Array();
    var PI2 = Math.PI * 2;
    var material = new THREE.ParticleCanvasMaterial({
      color: '#3c78d8',
      program: function(context) {
        context.beginPath();
        context.arc(0, 0, 1, 0, PI2, true);
        context.fill();
      }
    });
    var i = 0;
    for (var ix = 0; ix < AMOUNTX; ix++) {
      for (var iy = 0; iy < AMOUNTY; iy++) {
        particle = particles[i++] = new THREE.Particle(material);
        particle.position.x = ix * SEPARATION - ((AMOUNTX * SEPARATION) / 2);
        particle.position.z = iy * SEPARATION - ((AMOUNTY * SEPARATION) / 2);
        scene.add(particle);
      }
    }
    renderer = new THREE.CanvasRenderer();
    renderer.setSize(window.innerWidth, window.innerHeight);
    container.appendChild(renderer.domElement);
    document.addEventListener('mousemove', onDocumentMouseMove, false);
    document.addEventListener('touchstart', onDocumentTouchStart, false);
    document.addEventListener('touchmove', onDocumentTouchMove, false);
    window.addEventListener('resize', onWindowResize, false);
  }

  function onWindowResize() {
    windowHalfX = window.innerWidth / 2;
    windowHalfY = window.innerHeight / 2;
    camera.aspect = window.innerWidth / window.innerHeight;
    camera.updateProjectionMatrix();
    renderer.setSize(window.innerWidth, window.innerHeight);
  }

  function onDocumentMouseMove(event) {
    mouseX = event.clientX - windowHalfX;
    mouseY = event.clientY - windowHalfY;
  }

  function onDocumentTouchStart(event) {
    if (event.touches.length === 1) {
      event.preventDefault();
      mouseX = event.touches[0].pageX - windowHalfX;
      mouseY = event.touches[0].pageY - windowHalfY;
    }
  }

  function onDocumentTouchMove(event) {
    if (event.touches.length === 1) {
      event.preventDefault();
      mouseX = event.touches[0].pageX - windowHalfX;
      mouseY = event.touches[0].pageY - windowHalfY;
    }
  }

  function animate() {
    requestAnimationFrame(animate);
    render();
  }

  function render() {
    camera.position.x += (mouseX - camera.position.x) * .05;
    camera.position.y += (-mouseY - camera.position.y) * .05;
    camera.lookAt(scene.position);
    var i = 0;
    for (var ix = 0; ix < AMOUNTX; ix++) {
      for (var iy = 0; iy < AMOUNTY; iy++) {
        particle = particles[i++];
        particle.position.y = (Math.sin((ix + count) * 0.3) * 50) + (Math.sin((iy + count) * 0.5) * 50);
        particle.scale.x = particle.scale.y = (Math.sin((ix + count) * 0.3) + 1) * 2 + (Math.sin((iy + count) * 0.5) + 1) * 2;
      }
    }
    renderer.render(scene, camera);
    count += 0.1;
  }
  let renderAnimation = (container) => {
    init(container);
    animate();
  }
  let domContainer = document.getElementById('m-points')
  let a = renderAnimation(domContainer)
  </script>
</body>

</html>
科技感十足的大波浪动画（three.js）

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