what is three js

1import * as THREE from './js/three.module.js';
2
3let camera, scene, renderer;
4let geometry, material, mesh;
5
6init();
7
8function init() {
9
10	camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 0.01, 10 );
11	camera.position.z = 1;
12
13	scene = new THREE.Scene();
14
15	geometry = new THREE.BoxGeometry( 0.2, 0.2, 0.2 );
16	material = new THREE.MeshNormalMaterial();
17
18	mesh = new THREE.Mesh( geometry, material );
19	scene.add( mesh );
20
21	renderer = new THREE.WebGLRenderer( { antialias: true } );
22	renderer.setSize( window.innerWidth, window.innerHeight );
23	renderer.setAnimationLoop( animation );
24	document.body.appendChild( renderer.domElement );
25
26}
27
28function animation( time ) {
29
30	mesh.rotation.x = time / 2000;
31	mesh.rotation.y = time / 1000;
32
33	renderer.render( scene, camera );
34
35}