three.js 线移动

// 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);

// 创建一条线
const material = new THREE.LineBasicMaterial({ color: 0x00ff00 });
const points = [];
for (let i = 0; i < 100; i++) {
    points.push(new THREE.Vector3(i * 0.1, Math.sin(i * 0.2) * 5, 0));
}
const geometry = new THREE.BufferGeometry().setFromPoints(points);
const line = new THREE.Line(geometry, material);
scene.add(line);

camera.position.z = 15;

// 动画函数
function animate() {
    requestAnimationFrame(animate);

    // 更新线的位置
    const positions = line.geometry.attributes.position.array;
    for (let i = 0; i < positions.length; i += 3) {
        positions[i] -= 0.01; // 向左移动
        if (positions[i] < -5) positions[i] = 5; // 循环移动
    }
    line.geometry.attributes.position.needsUpdate = true;

    renderer.render(scene, camera);
}

animate();