three.js添加点击事件

// 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);

// 添加一个简单的立方体到场景中
const geometry = new THREE.BoxGeometry();
const material = new THREE.MeshBasicMaterial({ color: 0x00ff00 });
const cube = new THREE.Mesh(geometry, material);
scene.add(cube);

camera.position.z = 5;

// 创建Raycaster实例
const raycaster = new THREE.Raycaster();
const mouse = new THREE.Vector2();

// 添加点击事件监听器
window.addEventListener('click', onMouseClick, false);

function onMouseClick(event) {
    // 将鼠标位置归一化为设备坐标
    mouse.x = (event.clientX / window.innerWidth) * 2 - 1;
    mouse.y = -(event.clientY / window.innerHeight) * 2 + 1;

    // 更新射线
    raycaster.setFromCamera(mouse, camera);

    // 检测与物体的交点
    const intersects = raycaster.intersectObjects(scene.children);

    if (intersects.length > 0) {
        console.log('点击了物体:', intersects[0].object);
        // 在此处添加更多处理逻辑，如改变物体颜色等
        intersects[0].object.material.color.set(0xff0000);
    }
}

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