three贴图地面，雾气，克隆，贴图，打印所有模型，模型光源

import * as THREE from 'three';
import { GLTFLoader } from 'three/examples/jsm/loaders/GLTFLoader'
import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls'
import { PerspectiveCamera } from 'three/src/cameras/PerspectiveCamera'

雾气
scene.fog = new THREE.Fog(0xffffff, 10, 1500);

地面
const geometry = new THREE.PlaneGeometry( 10000, 10000);
const texture = new THREE.TextureLoader().load('/static/grass.jpg');
texture.wrapS = THREE.RepeatWrapping;
texture.wrapT = THREE.RepeatWrapping;
texture.repeat.set( 100, 100 );
const grassMaterial = new THREE.MeshBasicMaterial({map: texture});
const grass = new THREE.Mesh( geometry, grassMaterial );
grass.rotation.x = -0.5 * Math.PI;
scene.add( grass );

克隆
var box = new THREE.BoxGeometry(10,10,10);//创建一个立方体几何对象
var material = new THREE.MeshLambertMaterial({color:0x0000ff});//材质对象
var mesh = new THREE.Mesh(box,material);
var mesh2 = mesh.clone();//克隆网格模型
mesh.translateX(20);
scene.add(mesh,mesh2);

克隆模型
var group = new THREE.Group();
//加载模型
var loader = new GLTFLoader();
loader.load( '/static/gltf/wuxuanxian/aa/a.gltf', function ( gltf ) {
	gltf.scene.position.set(0, 13, 0);
	gltf.scene.rotation.set(4.65, 0, 0);
	group.add(gltf.scene)
	//克隆group对象
	var dade = group.clone();
	dade.translateX(50);
	scene.add(group,dade);
}, undefined, function ( error ) {
	console.error( error );
});

贴图
var box = new THREE.BoxGeometry(10,10,10);//创建一个立方体几何对象
//贴图
const texturea = new THREE.TextureLoader().load('/static/wood.jpg');
texturea.wrapS = THREE.RepeatWrapping;
texturea.wrapT = THREE.RepeatWrapping;
texturea.repeat.set( 2, 2 );
//贴图结束
const materials = new THREE.MeshBasicMaterial({map: texturea});
var mesh = new THREE.Mesh(box,materials);
var mesh2 = mesh.clone();//克隆网格模型
mesh.translateX(20);
scene.add(mesh,mesh2);

gltf贴图
var group = new THREE.Group();
/加载模型
var loader = new GLTFLoader();
loader.load( 'https://a.amap.com/jsapi_demos/static/gltf-online/shanghai/scene.gltf', function ( gltf ) {
	let model = gltf.scene;
	model.position.set(0, 13, 0);
	model.rotation.set(0, 0, 0);
	//遍历模型的每一部分
	//traverse这个方法可以遍历调用者和调用者的所有后代
	//所以这里的o就是模型的每一部分
	model.traverse((o) => {
		//将图片作为纹理加载
		let explosionTexture = new THREE.TextureLoader().load(
			'/static/wood.jpg'
		);
		//调整纹理方向,默认为真。翻转图像的Y轴以匹配WebGL纹理坐标空间。
		//此处不需要反转，当然也可以试试反转以后什么效果
		explosionTexture.flipY = false;
		//将纹理图生成基础网格材质(meshBasicMaterial)
		const material = new THREE.MeshBasicMaterial({
			map: explosionTexture
		});
		//给模型每部分上材质
		o.material = material;
	});
	//加载外部模型时候基本上都是一个组合对象.
	group.add(model)
	scene.add(group);
}, undefined, function ( error ) {
	console.error( error );
});

打印所有模型
//加载模型
var loader = new GLTFLoader();
loader.load( 'https://a.amap.com/jsapi_demos/static/gltf-online/shanghai/scene.gltf', function ( gltf ) {
    // 打印所有的模型
	console.log(dumpObject(gltf.scene).join('\n'));
}, undefined, function ( error ) {
	console.error( error );
});
// 获取模型中所有的模型
function dumpObject(obj, lines = [], isLast = true, prefix = '') {
	const localPrefix = isLast ? '└─' : '├─';
	lines.push(`${prefix}${prefix ? localPrefix : ''}${obj.name || '*no-name*'} [${obj.type}]`);
	const newPrefix = prefix + (isLast ? '  ' : '│ ');
	const lastNdx = obj.children.length - 1;
	obj.children.forEach((child, ndx) => {
		const isLast = ndx === lastNdx;
		dumpObject(child, lines, isLast, newPrefix);
	});
	return lines;
}

gltf和obj一样的模型大小控制

//模型大小控制
let model = gltf.scene;
model.scale.set(100, 100, 100);


// 添加模型
function initModel() {
	var mtlLoader = new THREE.MTLLoader();
	mtlLoader.setPath("assets/models/obj_mtl/")
	mtlLoader.load('city.mtl', function(materials) {
		materials.preload();
 
		var objLoader = new THREE.OBJLoader();
		objLoader.setMaterials(materials);
		objLoader.load('assets/models/obj_mtl/city.obj', function(object) {
			mesh = object;
			mesh.scale.set(3, 3, 3);
			mesh.position.set(18, 0, 18);
			scene.add(mesh);
		});
	});
}

obj贴图

    obj(){
		let mesh;
		var group = new THREE.Group();
		var mtlLoader = new MTLLoader();
		mtlLoader.load('/static/1519.mtl', function(materials) {
			materials.preload();
			var objLoader = new OBJLoader();
			objLoader.setMaterials(materials);
			objLoader.load('/static/1519.obj', function(object) {
				mesh = object;
				mesh.scale.set(2, 2, 2);
				mesh.position.set(0, 0, 0);
				mesh.traverse((o) => {
					//将图片作为纹理加载
					let explosionTexture = new THREE.TextureLoader().load(
						'/static/wood.jpg'
					);
					//调整纹理方向,默认为真。翻转图像的Y轴以匹配WebGL纹理坐标空间。
					//此处不需要反转，当然也可以试试反转以后什么效果
					explosionTexture.flipY = false;
					//将纹理图生成基础网格材质(meshBasicMaterial)
					const material = new THREE.MeshBasicMaterial({
						map: explosionTexture
					});
					//给模型每部分上材质
					o.material = material;
				});
				scene.add(mesh);
			});
		});
	},

模型光源

// 基础光源，并应用到场景(用到模型)
scene.add(new THREE.AmbientLight("#ffffff", 1.5));