Three.js前端3D开发：使用 CSS3DRenderer 渲染全景图

import * as THREE from 'three';
import { CSS3DRenderer, CSS3DObject } from 'three/examples/jsm/renderers/CSS3DRenderer.js';
import { GLTFLoader } from 'three/examples/jsm/loaders/GLTFLoader.js';
 
let scene, camera, renderer, labelRenderer;
let mesh, label;
 
init();
animate();
 
function init() {
    scene = new THREE.Scene();
    scene.background = new THREE.Color(0xeeeeee);
 
    camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
    camera.position.set(0, 2, 5);
 
    renderer = new THREE.WebGLRenderer({ antialias: true });
    renderer.setSize(window.innerWidth, window.innerHeight);
    document.body.appendChild(renderer.domElement);
 
    labelRenderer = new CSS3DRenderer();
    labelRenderer.setSize(window.innerWidth, window.innerHeight);
    labelRenderer.domElement.style.position = 'absolute';
    labelRenderer.domElement.style.top = 0;
    document.body.appendChild(labelRenderer.domElement);
 
    // 加载GLTF模型（假设有一个包含全景图的模型）
    const loader = new GLTFLoader();
    loader.load('path/to/model.gltf', (gltf) => {
        mesh = gltf.scene;
        scene.add(mesh);
 
        // 创建CSS3DObject对象，并关联全景图标签
        label = new CSS3DObject(document.querySelector('.panorama-label'));
        label.position.set(0, 0, 0);
        scene.add(label);
 
        // 更新全景图标签的位置与模型对齐
        function updateLabelPosition() {
            const position = mesh.position;
            label.position.set(position.x, position.y, position.z);
            label.rotation.set(mesh.rotation.x, mesh.rotation.y, mesh.rotation.z);
        }
        mesh.addEventListener('update', updateLabelPosition);
        updateLabelPosition();
    });
 
    function onWindowResize() {
        camera.aspect = window.innerWidth / window.innerHeight;
        camera.updateProjectionMatrix();
 
        renderer.setSize(window.innerWidth, window.innerHeight);
        labelRenderer.setSize(window.innerWidth, window.innerHeight);
    }
    window.addEventListener('resize', onWindowResize, false);
}
 
function animate() {
    requestAnimationFrame(