code: function init() {
    /**
     * Animation loop
     */
    function animate() {
      // render
      controls.update();
      renderer.render(scene, camera);
  
      // request new frame
      requestAnimationFrame(function() {
        animate();
      });
    }
  
    // renderer
    threeD = document.getElementById('r3d');
    renderer = new THREE.WebGLRenderer({
      antialias: true,
    });
    renderer.setSize(threeD.clientWidth, threeD.clientHeight);
    renderer.setClearColor(0x212121, 1);
  
    threeD.appendChild(renderer.domElement);
  
    // scene
    scene = new THREE.Scene();
    // camera
    camera = new CamerasOrthographic(
      threeD.clientWidth / -2,
      threeD.clientWidth / 2,
      threeD.clientHeight / 2,
      threeD.clientHeight / -2,
      0.1,
      10000
    );
  
    // controls
    controls = new ControlsOrthographic(camera, threeD);
    controls.staticMoving = true;
    controls.noRotate = true;
    camera.controls = controls;
  
    animate();
  }
docs: Init the scene