threejs object arrays

//main.js

import './style.css'

import * as THREE from 'three';

import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls';

// Setup

const scene = new THREE.Scene();

const camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);

const renderer = new THREE.WebGLRenderer({

  canvas: document.querySelector('#bg'),

});

renderer.setPixelRatio(window.devicePixelRatio);

renderer.setSize(window.innerWidth, window.innerHeight);

camera.position.setZ(30);

renderer.render(scene, camera);

const geometry = new THREE.TorusGeometry(10, 3, 16, 100);

const material = new THREE.MeshStandardMaterial({ color: 0xFF6347 });

const torus = new THREE.Mesh(geometry, material);

scene.add(torus);

const pointLight = new THREE.PointLight(0xffffff);

pointLight.position.set(20, 20, 20);

const ambientLight = new THREE.AmbientLight(0xffffff);

scene.add(pointLight, ambientLight);

const lightHelper = new THREE.PointLightHelper(pointLight);

const gridHelper = new THREE.GridHelper(200, 50);

scene.add(lightHelper, gridHelper);

const controls = new OrbitControls(camera, renderer.domElement);

function addStar() {

  const geometry = new THREE.SphereGeometry(0.25, 24, 24);

  const material = new THREE.MeshStandardMaterial({ color: 0xffffff });

  const star = new THREE.Mesh(geometry, material);

  const [x, y, z] = Array(3).fill().map(() => THREE.MathUtils.randFloatSpread(100))

  star.position.set(x, y, z);

  scene.add(star);

}

Array(200).fill().forEach(addStar);

function animate() {

  requestAnimationFrame(animate);

  torus.rotation.x += 0.01;

  torus.rotation.y += 0.005;

  torus.rotation.z += 0.01;

  controls.update();

  renderer.render(scene, camera);

}

animate()

reference:

https://www.youtube.com/watch?v=oHXkgWuHrc8

https://chuanshuoge3.blogspot.com/2022/02/threejs-lighting.html