three.js 画动态直线

// 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);

// 创建一条直线
const points = [
    new THREE.Vector3(-10, 0, 0),
    new THREE.Vector3(10, 0, 0)
];
const geometry = new THREE.BufferGeometry().setFromPoints(points);
const material = new THREE.LineBasicMaterial({ color: 0x00ff00 });
const line = new THREE.Line(geometry, material);
scene.add(line);

camera.position.z = 5;

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

    // 更新直线的起点或终点
    points[0].x += 0.01;
    geometry.attributes.position.needsUpdate = true;

    renderer.render(scene, camera);
}

animate();