在Three.js中使用lineTo和curveTo制作线条动画

// 创建场景
var scene = new THREE.Scene();

// 创建相机
var camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
camera.position.z = 5;

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

// 创建线条的几何体
var geometry = new THREE.Geometry();
geometry.vertices.push(new THREE.Vector3(-2, 0, 0)); // 添加起点
geometry.vertices.push(new THREE.Vector3(0, 2, 0)); // 添加控制点
geometry.vertices.push(new THREE.Vector3(2, 0, 0)); // 添加终点

// 创建线条的材质
var material = new THREE.LineBasicMaterial({ color: 0x00ff00 });

// 创建线条对象
var line = new THREE.Line(geometry, material);

// 将线条对象添加到场景中
scene.add(line);

// 动画循环
function animate() {
    requestAnimationFrame(animate);

    // 旋转线条对象
    line.rotation.x += 0.01;
    line.rotation.y += 0.01;

    // 渲染场景
    renderer.render(scene, camera);
}

// 开始动画循环
animate();