three.js 多个场景转换

// 初始化场景、相机和渲染器
const scene1 = new THREE.Scene();
const scene2 = new THREE.Scene();
const camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
const renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);

// 添加一些基本对象到场景1
const geometry1 = new THREE.BoxGeometry();
const material1 = new THREE.MeshBasicMaterial({ color: 0x00ff00 });
const cube1 = new THREE.Mesh(geometry1, material1);
scene1.add(cube1);

// 添加一些基本对象到场景2
const geometry2 = new THREE.SphereGeometry();
const material2 = new THREE.MeshBasicMaterial({ color: 0xff0000 });
const sphere2 = new THREE.Mesh(geometry2, material2);
scene2.add(sphere2);

// 设置初始场景
let currentScene = scene1;

// 渲染循环
function animate() {
    requestAnimationFrame(animate);
    // 更新当前场景中的对象（如果有必要）
    // 例如：cube1.rotation.x += 0.01;
    renderer.render(currentScene, camera);
}
animate();

// 切换场景的函数
function switchScene(newScene) {
    currentScene = newScene;
}

// 示例：点击按钮切换场景
document.getElementById('switchButton').addEventListener('click', () => {
    if (currentScene === scene1) {
        switchScene(scene2);
    } else {
        switchScene(scene1);
    }
});