three-globe
Version:
Globe data visualization as a ThreeJS reusable 3D object
102 lines (86 loc) • 3.16 kB
HTML
<head>
<script type="importmap">{ "imports": {
"three": "https://esm.sh/three",
"three/": "https://esm.sh/three/"
}}</script>
<!-- <script type="module"> import * as THREE from 'three'; window.THREE = THREE;</script>-->
<!-- <script src="../../dist/three-globe.js" defer></script>-->
<style>
body { margin: 0; }
#time {
position: absolute;
bottom: 8px;
left: 8px;
color: lightblue;
font-family: monospace;
}
</style>
</head>
<body>
<div id="globeViz"></div>
<div id="time"></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/examples/jsm/controls/TrackballControls.js?external=three';
import * as solar from 'https://esm.sh/solar-calculator';
const VELOCITY = 9; // minutes per frame
const sunPosAt = dt => {
const day = new Date(+dt).setUTCHours(0, 0, 0, 0);
const t = solar.century(dt);
const longitude = (day - dt) / 864e5 * 360 - 180;
return [longitude - solar.equationOfTime(t) / 4, solar.declination(t)];
};
let dt = +new Date();
const solarTile = { pos: sunPosAt(dt) };
const timeEl = document.getElementById('time');
const Globe = new ThreeGlobe()
.globeImageUrl('//cdn.jsdelivr.net/npm/three-globe/example/img/earth-dark.jpg')
.tilesData([solarTile])
.tileLng(d => d.pos[0])
.tileLat(d => d.pos[1])
.tileAltitude(0.005)
.tileWidth(180)
.tileHeight(180)
.tileUseGlobeProjection(false)
.tileMaterial(() => new THREE.MeshLambertMaterial({ color: '#ffff00', opacity: 0.3, transparent: true }))
.tilesTransitionDuration(0);
// animate time of day
requestAnimationFrame(() =>
(function animate() {
dt += VELOCITY * 60 * 1000;
solarTile.pos = sunPosAt(dt);
Globe.tilesData([solarTile]);
timeEl.textContent = new Date(dt).toLocaleString();
requestAnimationFrame(animate);
})()
);
// Setup renderer
const renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.setPixelRatio(window.devicePixelRatio);
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>