3D 随机生成房子，HTML代码在线实时编辑、实时预览

index.html

style.css

app.js

package.json

index.html

            
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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 互动场景</title>
    <link rel="stylesheet" href="style.css">
</head>
<body>
    <div id="canvas-container"></div>
    <script type="module" src="app.js"></script>
</body>
</html>

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style.css

            
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            /* 代码由 AI.笔COOL Agent 生成 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    overflow: hidden;
    background-color: #000;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

#canvas-container {
    width: 100vw;
    height: 100vh;
    display: block;
}

/* 简单的加载提示 */
#loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #fff;
    font-size: 1.2rem;
    pointer-events: none;
    transition: opacity 0.5s ease;
}

body.loaded #loading {
    opacity: 0;
}

/* UI 覆盖层样式 */
#ui-layer {
    position: absolute;
    top: 20px;
    left: 20px;
    color: #fff;
    z-index: 10;
    pointer-events: none;
}

h1 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

p {
    font-size: 0.9rem;
    opacity: 0.8;
    max-width: 300px;
}

/* 控制面板样式 */
#controls {
    position: absolute;
    bottom: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 15px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    z-index: 10;
    pointer-events: auto;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.control-group {
    margin-bottom: 10px;
}

.control-group:last-child {
    margin-bottom: 0;
}

label {
    display: block;
    margin-bottom: 5px;
    font-size: 0.85rem;
}

input[type="range"] {
    width: 150px;
    cursor: pointer;
}

button {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background 0.2s;
}

button:hover {
    background: #45a049;
}

button.reset {
    background: #f44336;
    margin-left: 10px;
}

button.reset:hover {
    background: #d32f2f;
}

/* 移动端适配 */
@media (max-width: 768px) {
    #controls {
        bottom: 10px;
        right: 10px;
        left: 10px;
        padding: 10px;
    }
    
    input[type="range"] {
        width: 100%;
    }
    
    h1 {
        font-size: 1.2rem;
    }
}

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app.js

            
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            /* 代码由 AI.笔COOL Agent 生成 */
import * as THREE from 'three';
import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls.js';

// 场景、相机、渲染器配置
const scene = new THREE.Scene();
scene.background = new THREE.Color(0x87CEEB); // 天空蓝背景
scene.fog = new THREE.Fog(0x87CEEB, 20, 100); // 添加雾效增加深度感

const camera = new THREE.PerspectiveCamera(60, window.innerWidth / window.innerHeight, 0.1, 1000);
camera.position.set(0, 15, 30);

const renderer = new THREE.WebGLRenderer({ antialias: true });
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.shadowMap.enabled = true;
renderer.shadowMap.type = THREE.PCFSoftShadowMap;
document.getElementById('canvas-container').appendChild(renderer.domElement);

// 控制器
const controls = new OrbitControls(camera, renderer.domElement);
controls.enableDamping = true;
controls.dampingFactor = 0.05;
controls.maxPolarAngle = Math.PI / 2 - 0.05; // 防止相机低于地面
controls.minDistance = 10;
controls.maxDistance = 50;

// 灯光系统
const ambientLight = new THREE.AmbientLight(0xffffff, 0.4);
scene.add(ambientLight);

const dirLight = new THREE.DirectionalLight(0xffffff, 0.8);
dirLight.position.set(20, 40, 20);
dirLight.castShadow = true;
dirLight.shadow.mapSize.width = 2048;
dirLight.shadow.mapSize.height = 2048;
dirLight.shadow.camera.near = 0.5;
dirLight.shadow.camera.far = 100;
dirLight.shadow.camera.left = -30;
dirLight.shadow.camera.right = 30;
dirLight.shadow.camera.top = 30;
dirLight.shadow.camera.bottom = -30;
scene.add(dirLight);

// 材质定义
const groundMaterial = new THREE.MeshStandardMaterial({
    color: 0x4caf50,
    roughness: 0.8,
    metalness: 0.1
});

const buildingMaterials = [
    new THREE.MeshStandardMaterial({ color: 0xff7043, roughness: 0.5 }), // 红砖
    new THREE.MeshStandardMaterial({ color: 0x42a5f5, roughness: 0.5 }), // 蓝瓦
    new THREE.MeshStandardMaterial({ color: 0xffeb3b, roughness: 0.5 }), // 黄窗
    new THREE.MeshStandardMaterial({ color: 0x8d6e63, roughness: 0.6 })  // 木色
];

const treeTrunkMaterial = new THREE.MeshStandardMaterial({ color: 0x795548, roughness: 0.9 });
const treeLeavesMaterial = new THREE.MeshStandardMaterial({ color: 0x2e7d32, roughness: 0.8 });

// 创建地形
const groundGeometry = new THREE.PlaneGeometry(100, 100, 32, 32);
const positionAttribute = groundGeometry.attributes.position;
for (let i = 0; i < positionAttribute.count; i++) {
    const x = positionAttribute.getX(i);
    const y = positionAttribute.getY(i);
    // 简单的噪声模拟地形起伏
    const z = Math.sin(x * 0.1) * 0.5 + Math.cos(y * 0.1) * 0.5 + Math.random() * 0.1;
    positionAttribute.setZ(i, z);
}
groundGeometry.computeVertexNormals();
const ground = new THREE.Mesh(groundGeometry, groundMaterial);
ground.rotation.x = -Math.PI / 2;
ground.receiveShadow = true;
scene.add(ground);

// 创建建筑生成器
function createBuilding(x, z, width, height, depth, colorIndex) {
    const group = new THREE.Group();
    
    // 主体
    const geometry = new THREE.BoxGeometry(width, height, depth);
    const material = buildingMaterials[colorIndex % buildingMaterials.length];
    const mesh = new THREE.Mesh(geometry, material);
    mesh.position.y = height / 2;
    mesh.castShadow = true;
    mesh.receiveShadow = true;
    group.add(mesh);
    
    // 屋顶
    const roofHeight = height * 0.2;
    const roofGeometry = new THREE.ConeGeometry(Math.max(width, depth) * 0.8, roofHeight, 4);
    const roofMaterial = new THREE.MeshStandardMaterial({ color: 0x333333 });
    const roof = new THREE.Mesh(roofGeometry, roofMaterial);
    roof.position.y = height + roofHeight / 2;
    roof.rotation.y = Math.PI / 4;
    roof.castShadow = true;
    group.add(roof);
    
    // 窗户 (简单模拟)
    const windowGeo = new THREE.PlaneGeometry(width * 0.2, height * 0.15);
    const windowMat = new THREE.MeshStandardMaterial({ 
        color: 0xffffcc, 
        emissive: 0xffffcc, 
        emissiveIntensity: 0.2 
    });
    
    for (let i = 0; i < 3; i++) {
        const window1 = new THREE.Mesh(windowGeo, windowMat);
        window1.position.set(0, height * 0.3 + i * height * 0.2, depth / 2 + 0.01);
        group.add(window1);
        
        const window2 = new THREE.Mesh(windowGeo, windowMat);
        window2.position.set(0, height * 0.3 + i * height * 0.2, -depth / 2 - 0.01);
        window2.rotation.y = Math.PI;
        group.add(window2);
    }

    group.position.set(x, 0, z);
    scene.add(group);
    return group;
}

// 创建树木生成器
function createTree(x, z, scale = 1) {
    const group = new THREE.Group();
    
    // 树干
    const trunkGeo = new THREE.CylinderGeometry(0.3 * scale, 0.4 * scale, 2 * scale, 8);
    const trunk = new THREE.Mesh(trunkGeo, treeTrunkMaterial);
    trunk.position.y = 1 * scale;
    trunk.castShadow = true;
    group.add(trunk);
    
    // 树叶 (多层圆锥)
    const leafSizes = [2.5, 2.0, 1.5];
    const leafHeights = [3.5, 4.5, 5.5];
    
    leafSizes.forEach((size, i) => {
        const leafGeo = new THREE.ConeGeometry(size * scale, 1.5 * scale, 8);
        const leaf = new THREE.Mesh(leafGeo, treeLeavesMaterial);
        leaf.position.y = leafHeights[i] * scale;
        leaf.castShadow = true;
        group.add(leaf);
    });
    
    group.position.set(x, 0, z);
    scene.add(group);
    return group;
}

// 随机散布建筑和树木
function random(min, max) {
    return Math.random() * (max - min) + min;
}

const buildings = [];
const trees = [];

// 生成市中心区域
for (let i = 0; i < 15; i++) {
    const x = random(-15, 15);
    const z = random(-15, 15);
    const w = random(2, 4);
    const h = random(4, 10);
    const d = random(2, 4);
    buildings.push(createBuilding(x, z, w, h, d, i));
}

// 生成郊区树木
for (let i = 0; i < 30; i++) {
    const angle = random(0, Math.PI * 2);
    const radius = random(20, 45);
    const x = Math.cos(angle) * radius;
    const z = Math.sin(angle) * radius;
    trees.push(createTree(x, z, random(0.8, 1.5)));
}

// 生成中心广场装饰
const centerPlazaGeo = new THREE.CylinderGeometry(5, 5, 0.1, 32);
const centerPlazaMat = new THREE.MeshStandardMaterial({ color: 0xcccccc });
const centerPlaza = new THREE.Mesh(centerPlazaGeo, centerPlazaMat);
centerPlaza.position.y = 0.1;
centerPlaza.receiveShadow = true;
scene.add(centerPlaza);

// 交互控制逻辑
let speed = 1;
let rotationSpeed = 1;
const speedSlider = document.getElementById('speed-slider');
const rotSlider = document.getElementById('rot-slider');

if (speedSlider) {
    speedSlider.addEventListener('input', (e) => {
        speed = parseFloat(e.target.value);
    });
}

if (rotSlider) {
    rotSlider.addEventListener('input', (e) => {
        rotationSpeed = parseFloat(e.target.value);
    });
}

// 动画循环
const clock = new THREE.Clock();

function animate() {
    requestAnimationFrame(animate);
    
    const time = clock.getElapsedTime();
    
    // 缓慢旋转整个场景或调整视角（如果启用了自动旋转）
    // 这里我们让相机稍微环绕，增加动态感
    camera.position.x = Math.sin(time * 0.1 * rotationSpeed) * 30;
    camera.position.z = Math.cos(time * 0.1 * rotationSpeed) * 30;
    camera.lookAt(0, 5, 0);
    
    controls.update();
    renderer.render(scene, camera);
}

// 窗口大小调整处理
window.addEventListener('resize', () => {
    camera.aspect = window.innerWidth / window.innerHeight;
    camera.updateProjectionMatrix();
    renderer.setSize(window.innerWidth, window.innerHeight);
});

// 启动
animate();

// 添加UI控制逻辑（如果存在）
const resetBtn = document.getElementById('reset-camera');
if (resetBtn) {
    resetBtn.addEventListener('click', () => {
        camera.position.set(0, 15, 30);
        camera.lookAt(0, 0, 0);
        controls.reset();
    });
}

// 添加场景说明文本
const uiLayer = document.getElementById('ui-layer');
if (uiLayer) {
    uiLayer.innerHTML = `
        <h1>3D 互动场景</h1>
        <p>拖动旋转视角，滚轮缩放。场景包含随机生成的建筑与树木，带有动态光影效果。</p>
    `;
}

// 添加控制面板
const controlsDiv = document.getElementById('controls');
if (controlsDiv) {
    controlsDiv.innerHTML = `
        <div class="control-group">
            <label for="speed-slider">漫游速度</label>
            <input type="range" id="speed-slider" min="0.1" max="2" step="0.1" value="1">
        </div>
        <div class="control-group">
            <label for="rot-slider">旋转速度</label>
            <input type="range" id="rot-slider" min="0.1" max="2" step="0.1" value="1">
        </div>
        <div class="control-group">
            <button id="reset-camera">重置视角</button>
        </div>
    `;
}

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package.json

注意：新添加的依赖包首次加载可能会报错，稍后再次刷新即可

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

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预览

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