JSFiddle - React, Tailwind, and code Playground

by Travnik

HTML

<!-- Import maps polyfill -->
<!-- Remove this when import maps will be widely supported -->
<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>
    
<script type="importmap">
	{
		"imports": {
			"three": "https://unpkg.com/three/build/three.module.js"
		}
	}
</script>

CSS

body {
	  margin: 0;
}

JavaScript

import * as THREE from 'three';

// init

const camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 0.01, 10 );
camera.position.z = 1;

const scene = new THREE.Scene();

const texture = new THREE.DataTexture(new Uint8Array(2048*2048*4),2048,2048);
texture.image.data.fill(255);
texture.needsUpdate = true;


const geometry = new THREE.BoxGeometry( 0.2, 0.2, 0.2 );
const material = new THREE.MeshBasicMaterial({map:texture});

const mesh = new THREE.Mesh( geometry, material );
scene.add( mesh );

const renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.setAnimationLoop( animation );
document.body.appendChild( renderer.domElement );

function randomizeTexture(){
	const n = 2048*2048;
  for(let i=0; i<n; i++){
  	const address = i*4;
    
    texture.image.data[address] = Math.floor(Math.random()*255); 
    texture.image.data[address+1] = Math.floor(Math.random()*255); 
    texture.image.data[address+2] = Math.floor(Math.random()*255);
  }
  
  texture.needsUpdate = true;
  console.log('Randomized Texture');
}

window.addEventListener('click',randomizeTexture);

// animation

function animation( time ) {

	mesh.rotation.x = time / 2000;
	mesh.rotation.y = time / 1000;

	renderer.render( scene, camera );

}