THREEJS -带自定义UV贴图的缓冲区几何体

// 引入THREE.JS库
import * as THREE from 'three';

// 创建场景、相机和渲染器
const scene = 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);

// 创建一个立方体的顶点数据
const vertices = new Float32Array([
    // x, y, z
    -1, -1, 1,
    1, -1, 1,
    1, 1, 1,
    -1, 1, 1,
    // ... 其他面的顶点
]);

// 创建UV坐标
const uvs = new Float32Array([
    0, 0,
    1, 0,
    1, 1,
    0, 1,
    // ... 其他面的UV
]);

// 创建索引数据（定义三角形）
const indices = new Uint16Array([
    0, 1, 2, 0, 2, 3,
    // ... 其他面的索引
]);

// 创建缓冲区几何体
const geometry = new THREE.BufferGeometry();
geometry.setAttribute('position', new THREE.BufferAttribute(vertices, 3));
geometry.setAttribute('uv', new THREE.BufferAttribute(uvs, 2));
geometry.setIndex(new THREE.BufferAttribute(indices, 1));

// 加载纹理
const textureLoader = new THREE.TextureLoader();
const texture = textureLoader.load('path/to/your/texture.jpg');

// 创建材质并应用纹理
const material = new THREE.MeshBasicMaterial({ map: texture });

// 创建网格并添加到场景
const mesh = new THREE.Mesh(geometry, material);
scene.add(mesh);

// 设置相机位置
camera.position.z = 5;

// 渲染循环
function animate() {
    requestAnimationFrame(animate);
    renderer.render(scene, camera);
}
animate();