JSFiddle - React, Tailwind, and code Playground

by EliasHasle

HTML

<script src="https://threejs.org/build/three.min.js"></script>
<script src="https://threejs.org/examples/js/controls/OrbitControls.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/dat-gui/0.7.6/dat.gui.min.js"></script>

CSS

body {
	background-color: #000;
	margin: 0px;
	overflow: hidden;
}

JavaScript

// Simple three.js example

var mesh1, mesh2, renderer, scene, camera, controls;

class ModStandardMaterial extends THREE.MeshStandardMaterial {
	constructor(pars) {
  	super(pars);
    
    var myUniform = {value: 0.5};
    Object.defineProperty(this, "myUniform", {
    	get() {return myUniform.value;},
      set(value) {myUniform.value = value;}
    });
    
    this.onBeforeCompile = shader => {
      shader.uniforms.myUniform = myUniform;      
    	shader.fragmentShader = shader.fragmentShader.replace("void main() {", "uniform float myUniform;void main() {").replace("vec4 diffuseColor = vec4( diffuse, opacity );", "vec4 diffuseColor = vec4( 1.-myUniform*diffuse, opacity );");
    };    
  }
}

init();
animate();

function init() {

    // renderer
    renderer = new THREE.WebGLRenderer();
    renderer.setSize( window.innerWidth, window.innerHeight );
    document.body.appendChild( renderer.domElement );

    // scene
    scene = new THREE.Scene();
    
    // camera
    camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 10000 );
    camera.position.set( 20, 20, 20 );

    // controls
    controls = new THREE.OrbitControls( camera, renderer.domElement );
    
    // ambient
    scene.add( new THREE.AmbientLight( 0x222222 ) );
    
    // light
    var light = new THREE.DirectionalLight( 0xffffff, 1 );
    light.position.set( 20, 20, 0 );
    scene.add( light );
    
    // axes
    scene.add( new THREE.AxesHelper( 20 ) );

    // geometry
    var geometry = new THREE.SphereGeometry( 5, 24, 16 );
    
    // material1
    var material1 = new THREE.MeshStandardMaterial( {
        color: 0x00ffff, 
        transparent: true,
        opacity: 0.7,
    } );
    
    // mesh
    mesh1 = new THREE.Mesh( geometry, material1 );
    mesh1.position.z = 5;
    scene.add( mesh1 );
        
    // material2
    var material2 = new ModStandardMaterial( {
        color: 0x00ffff, 
        transparent: true,
        opacity: 0.7,
    } );
   ...