globe.gl
Version:
UI component for Globe Data Visualization using ThreeJS/WebGL
62 lines (53 loc) • 1.78 kB
HTML
<head>
<style>
body { margin: 0; }
#time {
position: absolute;
bottom: 8px;
left: 8px;
color: lightblue;
font-family: monospace;
}
</style>
<script src="//cdn.jsdelivr.net/npm/globe.gl"></script>
<!-- <script src="../../dist/globe.gl.js"></script>-->
</head>
<body>
<div id="globeViz"></div>
<div id="time"></div>
<script type="module">
import { MeshLambertMaterial } from 'https://esm.sh/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 world = new Globe(document.getElementById('globeViz'))
.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 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);
world.tilesData([solarTile]);
timeEl.textContent = new Date(dt).toLocaleString();
requestAnimationFrame(animate);
})()
);
</script>
</body>