THREEjs -裁剪纹理，而不是拉伸以适合

// 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);

// 加载纹理
const textureLoader = new THREE.TextureLoader();
textureLoader.load('path/to/your/texture.jpg', function(texture) {
    // 设置纹理的重复和偏移
    texture.wrapS = THREE.RepeatWrapping;
    texture.wrapT = THREE.RepeatWrapping;
    texture.repeat.set(0.5, 0.5); // 只显示纹理的一半
    texture.offset.set(0.25, 0.25); // 从纹理的中心开始显示

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

    // 创建几何体并应用材质
    const geometry = new THREE.PlaneGeometry(5, 5);
    const mesh = new THREE.Mesh(geometry, material);
    scene.add(mesh);

    // 设置相机位置
    camera.position.z = 10;

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