一个3D文字项目，HTML代码在线实时编辑、实时预览

index.html

main.js

package.json

            
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            <!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>3D文字自动旋转效果，不支持中文自定义文字</title>
    <style>
        body {
            margin: 0;
            padding: 0;
            overflow: hidden;
            background: #000;
            font-family: 'Arial', sans-serif;
        }
        canvas {
            display: block;
        }
        .loading {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            color: white;
            font-size: 24px;
        }
    </style>
</head>
<body>
    <div class="loading">载入中...</div>
    <!-- 引入Three.js库 -->
    <script src="https://cdn.jsdelivr.net/npm/three@0.132.2/build/three.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/three@0.132.2/examples/js/controls/OrbitControls.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/three@0.132.2/examples/js/loaders/FontLoader.js"></script>
    <!-- 引入主JavaScript文件 -->
    <script src="main.js"></script>
</body>
</html>

            
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            const scene = new THREE.Scene();
const camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
camera.position.z = 100;

const renderer = new THREE.WebGLRenderer({ antialias: true });
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.setPixelRatio(window.devicePixelRatio);
document.body.appendChild(renderer.domElement);

setTimeout(() => {
    document.querySelector('.loading').style.display = 'none';
}, 1000);

// 光源
const ambientLight = new THREE.AmbientLight(0xffffff, 0.5);
scene.add(ambientLight);

const directionalLight = new THREE.DirectionalLight(0xffffff, 1);
directionalLight.position.set(1, 1, 1);
scene.add(directionalLight);

const pointLight = new THREE.PointLight(0x00ffff, 1, 100);
pointLight.position.set(20, 20, 20);
scene.add(pointLight);

// 粒子背景
const particleCount = 2000;
const particles = new THREE.BufferGeometry();
const posArray = new Float32Array(particleCount * 3);
const colorArray = new Float32Array(particleCount * 3);

for (let i = 0; i < particleCount * 3; i += 3) {
    posArray[i] = (Math.random() - 0.5) * 500;
    posArray[i + 1] = (Math.random() - 0.5) * 500;
    posArray[i + 2] = (Math.random() - 0.5) * 500;
    
    colorArray[i] = Math.random();
    colorArray[i + 1] = Math.random();
    colorArray[i + 2] = Math.random();
}

particles.setAttribute('position', new THREE.BufferAttribute(posArray, 3));
particles.setAttribute('color', new THREE.BufferAttribute(colorArray, 3));

const particleMaterial = new THREE.PointsMaterial({
    size: 0.5,
    vertexColors: true,
    transparent: true,
    opacity: 0.8
});

const particleSystem = new THREE.Points(particles, particleMaterial);
scene.add(particleSystem);

// 3D文字
let textMesh;
const createText = () => {
    const loader = new THREE.FontLoader();
    loader.load('https://cdn.jsdelivr.net/npm/three@0.132.2/examples/fonts/helvetiker_regular.typeface.json', (font) => {
        const textGeometry = new THREE.TextGeometry('3D jiang feng', {
            font: font,
            size: 20,
            height: 10,
            curveSegments: 12,
            bevelEnabled: true,
            bevelThickness: 1,
            bevelSize: 1,
            bevelOffset: 0,
            bevelSegments: 5
        });
        
        textGeometry.center();
        
        const textMaterial = new THREE.MeshPhongMaterial({
            color: 0x00ffff,
            emissive: 0x006666,
            shininess: 100,
            specular: 0xffffff
        });
        
        textMesh = new THREE.Mesh(textGeometry, textMaterial);
        scene.add(textMesh);
    });
};

createText();

const controls = new THREE.OrbitControls(camera, renderer.domElement);
controls.enableDamping = true;
controls.dampingFactor = 0.05;

// 旋转控制变量
let autoRotate = true;
let lastInteractionTime = Date.now();
const rotationSpeed = 0.005;

// 重置自动旋转计时器
const resetAutoRotateTimer = () => {
    lastInteractionTime = Date.now();
    autoRotate = false;
};

// 事件监听器
window.addEventListener('mousedown', resetAutoRotateTimer);
window.addEventListener('mousemove', resetAutoRotateTimer);
window.addEventListener('touchstart', resetAutoRotateTimer);
window.addEventListener('touchmove', resetAutoRotateTimer);
window.addEventListener('wheel', resetAutoRotateTimer);

window.addEventListener('resize', () => {
    camera.aspect = window.innerWidth / window.innerHeight;
    camera.updateProjectionMatrix();
    renderer.setSize(window.innerWidth, window.innerHeight);
});

// 动画循环
const animate = () => {
    requestAnimationFrame(animate);
    
    // 检查是否需要恢复自动旋转
    const currentTime = Date.now();
    if (!autoRotate && currentTime - lastInteractionTime > 3000) {
        autoRotate = true;
    }
    
    // 自动旋转
    if (autoRotate && textMesh) {
        textMesh.rotation.y += rotationSpeed;
    }
    
    controls.update();
    
    // 粒子动画
    const positions = particles.attributes.position.array;
    for (let i = 0; i < positions.length; i += 3) {
        positions[i] += (Math.random() - 0.5) * 0.2;
        positions[i + 1] += (Math.random() - 0.5) * 0.2;
        positions[i + 2] += (Math.random() - 0.5) * 0.2;
    }
    particles.attributes.position.needsUpdate = true;
    
    renderer.render(scene, camera);
};

animate();

            
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            {
  "dependencies": {
    "three": "0.173.0"
  }
}

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