three.js 添加交互

// 初始化场景、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);

// 添加一个立方体
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;

// 鼠标点击事件处理
const raycaster = new THREE.Raycaster();
const mouse = new THREE.Vector2();

function onMouseClick(event) {
    // 将鼠标位置归一化
    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('点击到了物体:', intersects[0].object);
        // 可以在这里添加更多的交互逻辑
    }
}

window.addEventListener('click', onMouseClick, false);

// 渲染循环
function animate() {
    requestAnimationFrame(animate);
    cube.rotation.x += 0.01;
    cube.rotation.y += 0.01;
    renderer.render(scene, camera);
}
animate();