Меши, отобранные после обновления позиций вершин буферной геометрии

const OrbitControls = THREE.OrbitControls // CDN shim

// Helper to create mesh with buffer geom
const createGeo = (initialY, color) => {
  const geometry = new THREE.BufferGeometry()
  const vertices = new Float32Array([
    0, initialY, 0,
    0, initialY + 1, 0,
    0, initialY, 1,
    0, initialY, 0,
    0, initialY + 1, 0,
    1, initialY, 0
  ])
  geometry.setAttribute('position', new THREE.BufferAttribute(vertices, 3));
  const material = new THREE.MeshBasicMaterial({
    color: color,
    side: THREE.DoubleSide
  })
  mesh = new THREE.Mesh(geometry, material)
  // Note: Setting frustumCulled to false always allows this to be seen, but I don't this object to always be seen
  // mesh.frustumCulled = false

  scene.add(mesh)
  return mesh
}

const scene = new THREE.Scene()
const camera = new THREE.PerspectiveCamera(30, window.innerWidth / window.innerHeight, 0.1, 100)
let controls
const greenMesh = createGeo(10, 0x00FF00) // Set Green at 0,10,0
const redMesh = createGeo(0, 0xFF0000) // Set red at 0,0,0, then update to 0,10,0

const renderer = new THREE.WebGLRenderer({antialias: true})
renderer.setSize(window.innerWidth, window.innerHeight)
renderer.setAnimationLoop(() => {
  controls.update()
  greenMesh.rotation.y += 0.1
  redMesh.rotation.y -= 0.1
  renderer.render(scene, camera)
})
document.body.appendChild(renderer.domElement)

controls = new OrbitControls(camera, renderer.domElement)
camera.position.set(15, -20, 15)
controls.target.set(0, 10, 0)
window.onresize = function() {
  camera.aspect = window.innerWidth / window.innerHeight
  camera.updateProjectionMatrix()
  renderer.setSize(window.innerWidth, window.innerHeight)
}

scene.add(new THREE.AxesHelper(100))

// Update red mesh to same position as green mesh
setTimeout(() => {
  redMesh.geometry.attributes.position.setXYZ(0, 0, 10, 0)
  redMesh.geometry.attributes.position.setXYZ(1, 0, 11, 0)
  redMesh.geometry.attributes.position.setXYZ(2, 0, 10, 1)
  redMesh.geometry.attributes.position.setXYZ(3, 0, 10, 0)
  redMesh.geometry.attributes.position.setXYZ(4, 0, 11, 0)
  redMesh.geometry.attributes.position.setXYZ(5, 1, 10, 0)

  // As per - https://threejs.org/docs/#manual/en/introduction/How-to-update-things
  redMesh.geometry.attributes.position.needsUpdate = true
  redMesh.geometry.computeBoundingBox()
  // When zooming / panning, red mesh is not always visible
}, 2000)

<script src = "https://cdn.jsdelivr.net/npm/[email protected]/build/three.min.js"></script>
<script src = "https://cdn.jsdelivr.net/npm/[email protected]/examples/js/controls/OrbitControls.min.js"></script>