skybox的地板在THREE.js中旋转了180度

// 创建场景和相机
var scene = new THREE.Scene();
var camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);

// 创建立方体几何体
var geometry = new THREE.BoxGeometry(10, 10, 10);

// 加载纹理贴图
var textureLoader = new THREE.TextureLoader();
var floorTexture = textureLoader.load('floor.jpg');
var ceilingTexture = textureLoader.load('ceiling.jpg');
var wallTexture = textureLoader.load('wall.jpg');

// 创建材质并应用纹理贴图
var material = [
  new THREE.MeshBasicMaterial({ map: wallTexture }),   // 墙壁
  new THREE.MeshBasicMaterial({ map: wallTexture }),   // 墙壁
  new THREE.MeshBasicMaterial({ map: ceilingTexture }), // 天花板
  new THREE.MeshBasicMaterial({ map: floorTexture }),   // 地板
  new THREE.MeshBasicMaterial({ map: wallTexture }),   // 墙壁
  new THREE.MeshBasicMaterial({ map: wallTexture })    // 墙壁
];
var cube = new THREE.Mesh(geometry, material);

// 将立方体添加到场景中
scene.add(cube);

// 设置相机位置
camera.position.z = 20;

// 渲染场景
var renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);

// 旋转地板180度
cube.rotation.x = Math.PI;

function animate() {
  requestAnimationFrame(animate);
  renderer.render(scene, camera);
}
animate();