1.引入包三个包

npm i three
npm i three-obj-mtl-loader
npm i orbitcontrols

第三个是辅助控制缩放 移动的

2.在vue 组件内 import文件

3.在mound钩子函数内调用

文件

let that = this;
			this.windowHalfX = window.innerWidth / 2;
			this.windowHalfY = window.innerHeight / 2;

			let divs = document.createElement('div');
			this.container = document.querySelector('.Modal');
			this.container.appendChild(divs);
			// 场景
			this.scene = new THREE.Scene();
			// 相机
			this.camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 1, 1000);
			this.camera.position.z = 1.5;
			// 灯光
			var light = new THREE.AmbientLight('#deebf7', 0.9); // soft white light
			this.scene.add(light);
			// 渲染器
			this.renderer = new THREE.WebGLRenderer();
			this.renderer.setSize(window.innerWidth, window.innerHeight);
			// this.renderer.setClearColor(0xb9d3ff, 1); //设置背景颜色
			divs.appendChild(this.renderer.domElement);

			var onProgress = function(xhr) {
				if (xhr.lengthComputable) {
					var percentComplete = (xhr.loaded / xhr.total) * 100;
					console.log(Math.round(percentComplete, 2) + '% downloaded');
				}
			};
			var onError = function(xhr) {
				console.log(xhr)
			};

			var MTLLoaders = new MTLLoader();
			var OBJLoaders = new OBJLoader();



			var textureLoader = new THREE.TextureLoader();
			MTLLoaders.load('https://xxxxxxxxx.com/18559677286/mesh.mtl', (materials) =>{
				console.log(materials);
				materials.preload();
				// OBJLoaders.setMaterials(materials)
				OBJLoaders.load(
					'https://xxxxxxxxx.com/18559677286/mesh.obj',
					(object)=> {
						console.log(object);
						// 设置旋转中心点
						object.children[0].geometry.computeBoundingBox();
						object.children[0].geometry.center();
						object.scale.set(3, 3, 3);
						object.position.y = 0;
						// this.scene.add(materials);
						this.scene.add(object);
						this.renderer.render(this.scene, this.camera);
						// requestAnimationFrame(anime);

						textureLoader.load('https://xxxxxxxxx/18559677286/mesh.png', (texture)=> {
							console.log(texture, object);
							object.children[0].material.map = texture;
							// object.children[1].material.map = texture;
							object.children[0].material.needsUpdate = true;
							// object.children[1].material.needsUpdate = true;
							this.scene.add(object);
							this.renderer.render(this.scene, this.camera);
						});
					},
					onProgress,
					onError
				);
			});

			window.addEventListener('resize', onWindowResize, false);
			const controls = new OrbitControls(this.camera, this.renderer.domElement)
			controls.enableDamping = true
			controls.dampingFactor = 0.25
			controls.enableZoom = false
			controls.addEventListener('change', render); //监听鼠标、键盘事件

			function onWindowResize() {
				windowHalfX = window.innerWidth / 2;
				windowHalfY = window.innerHeight / 2;
				this.camera.aspect = window.innerWidth / window.innerHeight;
				this.camera.updateProjectionMatrix();
				this.renderer.setSize(window.innerWidth, window.innerHeight);
			}

			function render() {
				that.camera.lookAt(that.scene.position);
				that.renderer.render(that.scene, that.camera);
			}
			render();

4.效果图

部分加载报错

在node_module > three-obj-mtl-loader > index.js中找到第543行并注释掉。在 545行重新定义loader
原代码:

新修改

另：HTML页面使用three加载obj文件和mtl文件