JSFiddle - React, Tailwind, and code Playground

by realhunts

HTML

<script src="http://threejs.org/build/three.min.js"></script>
<script src="http://threejs.org/examples/js/controls/OrbitControls.js"></script>

JavaScript

// a basic three.js scene

var container, renderer, scene, camera, controls;
function computeFaceCentroids( geometry ) {

    var f, fl, face;

    for ( f = 0, fl = geometry.faces.length; f < fl; f ++ ) {

        face = geometry.faces[ f ];
        face.centroid = new THREE.Vector3( 0, 0, 0 );

        if ( face instanceof THREE.Face3 ) {

            face.centroid.add( geometry.vertices[ face.a ] );
            face.centroid.add( geometry.vertices[ face.b ] );
            face.centroid.add( geometry.vertices[ face.c ] );
            face.centroid.divideScalar( 3 );

        } else if ( face instanceof THREE.Face4 ) {

            face.centroid.add( geometry.vertices[ face.a ] );
            face.centroid.add( geometry.vertices[ face.b ] );
            face.centroid.add( geometry.vertices[ face.c ] );
            face.centroid.add( geometry.vertices[ face.d ] );
            face.centroid.divideScalar( 4 );

        }

    }

}

init();
animate();

function init() {

    // renderer
    renderer = new THREE.WebGLRenderer({
        antialias: false
    });
    renderer.setSize(window.innerWidth, window.innerHeight);
    renderer.setClearColor(0xccccff);
    container = document.createElement('div');
    document.body.appendChild(container);
    container.appendChild(renderer.domElement);

    // scene
    scene = new THREE.Scene();

    // camera
    camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 1, 10000);
    camera.position.set(0, 200, 800);
    camera.lookAt(scene.position);

    // (camera) controls
    // mouse controls: left button to rotate, 
    //    mouse wheel to zoom, right button to pan
    controls = new THREE.OrbitControls(camera, renderer.domElement);

    // light    
    var light = new THREE.PointLight(0xffffff);
    light.position.set(100, 250, 250);
    scene.add(light);

    // mesh
    var sphereGeometry = new THREE.BoxGeometry(100, 100, 100);
    var sphereMaterial = new THREE.MeshLambertMaterial({
      ...