20232.9.12今天我学习了如何使用vue2+three制作一个3d图形，效果：

 首先安装：

npm install three

相关代码： 

<!--3d基础版，实现单个3d图形-->
<template>
  <div>
    <div id="content"/>
  </div>
</template>
<script>
import * as THREE from 'three'

export default {
  data() {
    return {
      scene: null,//场景
      camera: null,//照相机
      renderer: null,//渲染器
      mesh: null,//物体
      light: null,//灯光
      num: 0,//增加物体
    }
  },
  mounted() {
    this.init()
  },
  methods: {
    init() {
      // 创建场景
      this.createScene()
      // 创建照相机
      this.createCamera()
      // 创建渲染器
      this.createRenderer()
      // 创建灯光
      this.createLight()
      // 创建物体
      this.createMesh()
      // 触发
      this.render()
      this.animation()
    },
    // 创建场景
    createScene() {
      this.scene = new THREE.Scene()
    },
    // 创建照相机
    createCamera() {
      this.camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 1000)
      this.camera.position.set(200, 200, 200)
      this.camera.lookAt(this.scene.position)
    },
    // 创建渲染器
    createRenderer() {
      this.renderer = new THREE.WebGLRenderer()
      this.renderer.setSize(window.innerWidth, window.innerHeight)
      this.renderer.setClearColor(new THREE.Color(0xffffff))
      document.getElementById('content').appendChild(this.renderer.domElement)
    },
    // 创建灯光
    createLight() {
      this.light = new THREE.DirectionalLight({
        color: 'red'
      })
      this.light.position.set(100, 100, 100)
      this.scene.add(this.light)
    },
    // 创建物体
    createMesh() {
      const geometry = new THREE.BoxGeometry(30, 30, 30)
      const material = new THREE.MeshLambertMaterial({
        color: 0x0000ff
      })
      this.mesh = new THREE.Mesh(geometry, material)
      this.scene.add(this.mesh)
      this.render()
    },
    //触发
    render() {
      this.renderer.render(this.scene, this.camera)
    },
    animation() {
      let time = new Date() * 0.001;
      // 对物体旋转
      // this.mesh.position.set(100 * Math.cos(time), 100 * Math.sin(time), 0)
      // 对照相机旋转
      // this.camera.position.set(100 * Math.cos(time), 100 * Math.sin(time), 0)
      // this.camera.lookAt(this.scene.position)
      this.render()
      requestAnimationFrame(this.animation)
    }
  }
}
</script>