Three加载3D模型贴图
Three加载3D模型贴图
准备阶段
- 3D模型
- three 库文件
- 纹理图片
相关资料
- 官方开发文档： https://threejs.org/docs
- 官网编辑3D模型：https://threejs.org/editor/ 可以在这里创建一个3D模型导出
gltf或obj都可以 - 纹理图片：https://3dtextures.me/ 、https://ambientcg.com/view?id=Bricks075A
- 官网示例代码：https://github.com/mrdoob/three.js/
- 学习 three.js 代码（第四版）：https://github.com/PacktPublishing/Learn-Three.js-Fourth-edition
- web 浮动面板控制器：https://lil-gui.georgealways.com/#
效果图
核心代码
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>房屋平面室内图</title>
</head>
<body>
</body>
<script type="importmap">
{
"imports": {
"three":"/js/three.module.js",
"three/addons/": "/examples/jsm/"
}
}
</script>
<script type="module">
import GUI from 'https://cdn.jsdelivr.net/npm/lil-gui@0.18/+esm';
import * as THREE from 'three';
// 加载 gltf 模型
import {
GLTFLoader
} from 'three/addons/loaders/GLTFLoader.js';
// 加载 obj 模型
import {
OBJLoader
} from 'three/addons/loaders/OBJLoader.js';
// 轨道控制器
import {
OrbitControls
} from 'three/addons/controls/OrbitControls.js';
// 创建场景
const scene = new THREE.Scene();
// 创建透视相机
const camera = new THREE.PerspectiveCamera(50, window.innerWidth / window.innerHeight, 0.1, 1000)
camera.position.set(0, 20, 200)
camera.scale.x = 1
camera.scale.y = 1
camera.scale.z = 1
// camera.zoom=0.5
// 更新相机
camera.updateProjectionMatrix()
// 创建渲染器，透明背景
const renderer = new THREE.WebGLRenderer({
alpha: true
});
// 场景灯光
const directionalLight = new THREE.DirectionalLight()
directionalLight.penumbra = 0.4
directionalLight.position.set(10, 14, 5)
directionalLight.distance = 0
directionalLight.castShadow = true
directionalLight.intensity = 1
directionalLight.shadow.camera.near = 1
directionalLight.shadow.camera.far = 25
directionalLight.shadow.camera.right = 10
directionalLight.shadow.camera.left = -10
directionalLight.shadow.camera.top = 10
directionalLight.shadow.camera.bottom = -10
directionalLight.shadow.mapSize.width = 2048
directionalLight.shadow.mapSize.height = 2048
directionalLight.shadow.bias = -0.01
scene.add(directionalLight);
// 纹理可以加载。TextureLoader
const textureLoader = new THREE.TextureLoader();
textureLoader.load('/assets/wood/floor-parquet-pattern-172292.jpg', (loaded) => {
loaded.encoding = THREE.sRGBEncoding
scene.background = loaded
scene.environment = null
})
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
const gui = new GUI();
const obj = {
left: '/model/textures/12.jpg',
right: '/model/textures/12.jpg',
bottom: '/model/textures/9.jpg',
back: '/model/textures/13.jpg',
bed: '/model/textures/5.jpg',
table: '/model/textures/1.jpg',
}
const mm = {
'material1': '/model/textures/1.jpg',
'material2': '/model/textures/2.png',
'material3': '/model/textures/3.jpg',
'material4': '/model/textures/4.png',
'material5': '/model/textures/5.jpg',
'material6': '/model/textures/6.jpg',
'material7': '/model/textures/7.jpg',
'material8': '/model/textures/8.jpg',
'material9': '/model/textures/9.jpg',
'material10': '/model/textures/10.jpg',
'material11': '/model/textures/11.jpg',
'material12': '/model/textures/12.jpg',
'material13': '/model/textures/13.jpg',
'material14': '/model/textures/14.jpg',
}
const folder = gui.addFolder( 'textures' );
folder.add(obj, 'left', mm)
folder.add(obj, 'right', mm)
folder.add(obj, 'bottom', mm)
folder.add(obj, 'back', mm)
folder.add(obj, 'bed', mm)
folder.add(obj, 'table', mm)
folder.onChange(event => {
console.log(event)
const key = event.property;
const value = event.value;
const mesh = scene.getObjectByName(key);
if (mesh) {
const material = new THREE.MeshBasicMaterial({
map: textureLoader.load(value)
});
mesh.material = material;
mesh.castShadow=true;
}
});
const backgroundColor = gui.addFolder( 'scene' );
backgroundColor.add({'backGround':'White'},'backGround', ['White', 'Black', 'Null', 'Color', 'Texture','自定义纹理', 'Cubemap'])
.onChange((event) => handleBackgroundChange(event, scene))
const handleBackgroundChange = (setting, scene) => {
switch (setting) {
case 'White':
scene.background = new THREE.Color(0xffffff)
break
case 'Black':
scene.background = new THREE.Color(0x000000)
break
case 'Null':
scene.background = null
break
case 'Color':
scene.background = new THREE.Color(0x44ff44)
break
case 'Texture':
textureLoader.load('/assets/wood/abstract-antique-backdrop-164005.jpg', (loaded) => {
loaded.encoding = THREE.sRGBEncoding
scene.background = loaded
scene.environment = null
})
break
case '自定义纹理':
textureLoader.load('/assets/wood/floor-parquet-pattern-172292.jpg', (loaded) => {
loaded.encoding = THREE.sRGBEncoding
scene.background = loaded
scene.environment = null
})
break
case 'Cubemap':
textureLoader.load('/assets/equi.jpeg', (loaded) => {
loaded.mapping = THREE.EquirectangularReflectionMapping
scene.background = loaded
scene.environment = loaded
})
break
default:
break
}
}
const loader = new GLTFLoader();
// 滑轨控制
const controller = new OrbitControls(camera, renderer.domElement)
controller.enableDamping = true
controller.dampingFactor = 0.05
controller.minDistance = 1
controller.maxDistance = 100
controller.minPolarAngle = 0
controller.maxPolarAngle = Math.PI
loader.load(
'/model/plan_room.gltf',
function(gltf) {
gltf.scene.traverse(function(child) {
if (child instanceof THREE.Mesh) {
// 加载模型时，添加对于的纹理贴图
for (let key in obj) {
if (child.name === key) {
const material = new THREE.MeshBasicMaterial({
map: textureLoader.load(obj[key])
});
child.material = material;
continue;
}
}
}
})
gltf.scene.scale.x = 0.5
gltf.scene.scale.y = 0.5
gltf.scene.scale.z = 0.5
scene.add(gltf.scene);
},
function(xhr) {
console.log((xhr.loaded / xhr.total * 100) + '% loaded');
},
function(error) {
console.error(error);
}
);
function animate() {
requestAnimationFrame(animate);
controller.update();
renderer.render(scene, camera);
}
animate();
</script>
</html>
源码传送
下载:https://864000.lanzouy.com/ipX7D0woxeqf 密码:3bi0
根目录执行
http-server -p9001浏览器访问http://127.0.0.1:9001
C:\Users\mac\OneDrive\three-1>http-server -p9001
Starting up http-server, serving ./
http-server version: 14.1.1
http-server settings:
CORS: disabled
Cache: 3600 seconds
Connection Timeout: 120 seconds
Directory Listings: visible
AutoIndex: visible
Serve GZIP Files: false
Serve Brotli Files: false
Default File Extension: none
Available on:
http://192.168.31.156:9001
http://127.0.0.1:9001
哇！又赚了一天人民币
