Threejs 中使用HTML融合、交互CSS2DObject对象

import * as THREE from 'three';
import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls.js';
import { CSS2DRenderer, CSS2DObject } from 'three/examples/jsm/renderers/CSS2DRenderer.js';
 
let camera, scene, renderer, labelRenderer, controls;
let mesh;
 
init();
animate();
 
function init() {
    camera = new THREE.PerspectiveCamera(70, window.innerWidth / window.innerHeight, 0.01, 10);
    camera.position.set(0.5, 0.5, 0.5);
 
    scene = new THREE.Scene();
 
    // 创建一个立方体
    let geometry = new THREE.BoxGeometry(0.2, 0.2, 0.2);
    mesh = new THREE.Mesh(geometry, new THREE.MeshNormalMaterial());
    scene.add(mesh);
 
    // 创建CSS2DRenderer
    labelRenderer = new CSS2DRenderer();
    labelRenderer.setSize(window.innerWidth, window.innerHeight);
    labelRenderer.domElement.style.position = 'absolute';
    labelRenderer.domElement.style.top = 0;
    document.body.appendChild(labelRenderer.domElement);
 
    // 创建2D标签对象
    let label = document.createElement('div');
    label.style.color = 'white';
    label.innerHTML = 'Hello Three.js!';
    let labelObject = new CSS2DObject(label);
    labelObject.position.set(0.5, 0.5, 0);
    scene.add(labelObject);
 
    renderer = new THREE.WebGLRenderer({ antialias: true });
    renderer.setPixelRatio(window.devicePixelRatio);
    renderer.setSize(window.innerWidth, window.innerHeight);
    document.body.appendChild(renderer.domElement);
 
    // 添加轨道控制器
    controls = new OrbitControls(camera, renderer.domElement);
    controls.enableDamping = true;
 
    // 监听窗口大小变化
    window.addEventListener('resize', onWindowResize, false);
}
 
function animate() {
    requestAnimationFrame(animate);
    render();
}
 
function render() {
    controls.update();
    mesh.rotation.x += 0.01;
    mesh.rotation.y += 0.005;
    renderer.render(scene, camera);
    labelRenderer.render(scene, camera);
}
 
function onWindowResize() {
    camera.aspect = window.innerWidth / window.innerHeight;
    camera.updateProjectionMatrix();
    renderer.setSize(window.inn