example/ripples/index.html

<head>
  <style> body { margin: 0; } </style>

  <script type="importmap">{ "imports": {
    "three": "https://esm.sh/three",
    "three/addons/": "https://esm.sh/three/examples/jsm/"
  }}</script>

<!--  <script type="module"> import * as THREE from 'three'; window.THREE = THREE;</script>-->
<!--  <script src="../../dist/three-globe.js" defer></script>-->
</head>

<body>
  <div id="globeViz"></div>

  <script type="module">
    import ThreeGlobe from 'https://esm.sh/three-globe?external=three';
    import * as THREE from 'https://esm.sh/three';
    import { TrackballControls } from 'three/addons/controls/TrackballControls.js?external=three';

    // Gen random data
    const N = 10;
    const gData = [...Array(N).keys()].map(() => ({
      lat: (Math.random() - 0.5) * 180,
      lng: (Math.random() - 0.5) * 360,
      maxR: Math.random() * 20 + 3,
      propagationSpeed: (Math.random() - 0.5) * 20 + 1,
      repeatPeriod: Math.random() * 2000 + 200
    }));

    const colorInterpolator = t => `rgba(255,100,50,${1-t})`;

    const Globe = new ThreeGlobe()
      .globeImageUrl('//unpkg.com/three-globe/example/img/earth-dark.jpg')
      .bumpImageUrl('//unpkg.com/three-globe/example/img/earth-topology.png')
      .ringsData(gData)
      .ringColor(() => colorInterpolator)
      .ringMaxRadius('maxR')
      .ringPropagationSpeed('propagationSpeed')
      .ringRepeatPeriod('repeatPeriod');

    // Setup renderer
    const renderer = new THREE.WebGLRenderer();
    renderer.setSize(window.innerWidth, window.innerHeight);
    document.getElementById('globeViz').appendChild(renderer.domElement);

    // Setup scene
    const scene = new THREE.Scene();
    scene.add(Globe);
    scene.add(new THREE.AmbientLight(0xcccccc, Math.PI));
    scene.add(new THREE.DirectionalLight(0xffffff, 0.6 * Math.PI));

    // Setup camera
    const camera = new THREE.PerspectiveCamera();
    camera.aspect = window.innerWidth/window.innerHeight;
    camera.updateProjectionMatrix();
    camera.position.z = 500;

    // Add camera controls
    const tbControls = new TrackballControls(camera, renderer.domElement);
    tbControls.minDistance = 101;
    tbControls.rotateSpeed = 5;
    tbControls.zoomSpeed = 0.8;

    // Kick-off renderer
    (function animate() { // IIFE
      // Frame cycle
      tbControls.update();
      renderer.render(scene, camera);
      requestAnimationFrame(animate);
    })();
  </script>
</body>