 cubeGeo = new THREE.BoxGeometry(cubeSize, cubeSize, cubeSize);
    const cubeMat = new THREE.MeshPhongMaterial({color: '#8AC'});
    const mesh = new THREE.Mesh(cubeGeo, cubeMat);
    mesh.position.set(cubeSize + 1, cubeSize / 2, 0);
    scene.add(mesh);
  }
  {
    const sphereRadius = 3;
    const sphereWidthDivisions = 32;
    const sphereHeightDivisions = 16;
    const sphereGeo = new THREE.SphereGeometry(sphereRadius, sphereWidthDivisions, sphereHeightDivisions);
    const sphereMat = new THREE.MeshPh