vue threejs显示辅助线

要在Vue中使用Three.js，并显示辅助线，可以按照以下步骤进行操作：

1. 安装Three.js和vue-threejs库

npm install three vue-threejs --save

2. 在Vue组件中导入Three.js和vue-threejs库

import Vue from 'vue'
import * as THREE from 'three'
import { ThreeBSP } from 'three-js-csg-es6'
import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls.js'
import { DragControls } from 'three/examples/jsm/controls/DragControls.js'
import { TransformControls } from 'three/examples/jsm/controls/TransformControls.js'
import { GLTFLoader } from 'three/examples/jsm/loaders/GLTFLoader.js'
import { OBJLoader } from 'three/examples/jsm/loaders/OBJLoader.js'
import { MTLLoader } from 'three/examples/jsm/loaders/MTLLoader.js'
import { VueThreejs } from 'vue-threejs'

3. 在Vue组件中使用VueThreejs组件，并添加辅助线

<template>
  <vue-threejs :renderer="renderer" :camera="camera" :scene="scene" :width="width" :height="height" :clearColor="0xffffff">
    <template slot-scope="{ renderer, camera, scene, width, height }">
      <OrbitControls :camera="camera" :renderer="renderer" :enableDamping="true" />
      <axes-helper :size="100" />
      <grid-helper :size="100" :divisions="10" />
      <!-- Your 3D objects here -->
    </template>
  </vue-threejs>
</template>

4. 运行Vue应用，即可看到带有辅助线的Three.js场景

new Vue({
  el: '#app',
  components: {
    VueThreejs
  },
  data() {
    return {
      width: window.innerWidth,
      height: window.innerHeight,
      renderer: null,
      camera: null,
      scene: null
    }
  },
  mounted() {
    this.init()
  },
  methods: {
    init() {
      this.renderer = new THREE.WebGLRenderer({ antialias: true })
      this.renderer.setSize(this.width, this.height)
      document.body.appendChild(this.renderer.domElement)

      this.camera = new THREE.PerspectiveCamera(75, this.width / this.height, 0.1, 1000)
      this.camera.position.z = 10

      this.scene = new THREE.Scene()
    }
  }
})