examples/geometries_slice/geometries_slice.js
function init() {
  /**
   * Animation loop
   */
  function animate() {
    updateGeometries();
    render();

    // request new frame
    requestAnimationFrame(function() {
      animate();
    });
  }

  // renderer
  threeD = document.getElementById('r3d');
  renderer = new THREE.WebGLRenderer({
    antialias: true,
  });
  renderer.setSize(threeD.offsetWidth, threeD.offsetHeight);
  renderer.setClearColor(0x353535, 1);
  renderer.setPixelRatio(window.devicePixelRatio);
  threeD.appendChild(renderer.domElement);

  // stats
  stats = new Stats();
  threeD.appendChild(stats.domElement);

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

  // camera
  camera = new THREE.PerspectiveCamera(
    45,
    threeD.offsetWidth / threeD.offsetHeight,
    0.01,
    10000000
  );
  camera.position.x = 150;
  camera.position.y = 150;
  camera.position.z = 100;

  // controls
  controls = new ControlsTrackball(camera, threeD);
  controls.rotateSpeed = 1.4;
  controls.zoomSpeed = 1.2;
  controls.panSpeed = 0.8;
  controls.noZoom = false;
  controls.noPan = false;
  controls.dynamicDampingFactor = 0.3;

  particleLight = new THREE.Mesh(
    new THREE.SphereGeometry(2, 8, 8),
    new THREE.MeshBasicMaterial({ color: 0xfff336 })
  );
  scene.add(particleLight);

  animate();
}
function init() {
  /**
   * Animation loop
   */
  function animate() {
    updateGeometries();
    render();

    // request new frame
    requestAnimationFrame(function() {
      animate();
    });
  }

  // renderer
  threeD = document.getElementById('r3d');
  renderer = new THREE.WebGLRenderer({
    antialias: true,
  });
  renderer.setSize(threeD.offsetWidth, threeD.offsetHeight);
  renderer.setClearColor(0x353535, 1);
  renderer.setPixelRatio(window.devicePixelRatio);
  threeD.appendChild(renderer.domElement);

  // stats
  stats = new Stats();
  threeD.appendChild(stats.domElement);

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

  // camera
  camera = new THREE.PerspectiveCamera(
    45,
    threeD.offsetWidth / threeD.offsetHeight,
    0.01,
    10000000
  );
  camera.position.x = 150;
  camera.position.y = 150;
  camera.position.z = 100;

  // controls
  controls = new ControlsTrackball(camera, threeD);
  controls.rotateSpeed = 1.4;
  controls.zoomSpeed = 1.2;
  controls.panSpeed = 0.8;
  controls.noZoom = false;
  controls.noPan = false;
  controls.dynamicDampingFactor = 0.3;

  particleLight = new THREE.Mesh(
    new THREE.SphereGeometry(2, 8, 8),
    new THREE.MeshBasicMaterial({ color: 0xfff336 })
  );
  scene.add(particleLight);

  animate();
}
Initialize the scene