JSFiddle - React, Tailwind, and code Playground

by gerdonabbink

HTML

<script src="https://rawgit.com/mrdoob/three.js/dev/build/three.min.js"></script>
<script src="https://rawgit.com/chandlerprall/ThreeCSG/master/ThreeCSG.js"></script>

JavaScript

var scene = new THREE.Scene();
var camera = new THREE.PerspectiveCamera(95, window.innerWidth / window.innerHeight, 0.1, 1000);

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

var outerGeometry = new THREE.CylinderGeometry(2, 2, 5, 360, 1);
var innerGeometry = new THREE.CylinderGeometry(1.5, 1.5, 5, 360, 1);
var material = new THREE.MeshNormalMaterial({
  color: 0x00ff00,
  side: THREE.DoubleSide
});

var outerCylinder = new ThreeBSP(outerGeometry);
var innerCylinder = new ThreeBSP(innerGeometry);

var hollowedCylinder = innerCylinder.union(outerCylinder);

scene.add(hollowedCylinder.toMesh(material));

camera.position.y = 5;
camera.position.z = 5;
camera.lookAt(0, 0, 0);

function animate() {
  requestAnimationFrame(animate);
  renderer.render(scene, camera);
}
animate();