three.js一步一步来--如何画出一个逃跑的圆柱体

代码如下

<template>
  <div style="1000px; height:800px">
    <p>逃跑的圆柱体</p>
    <div ref="myBody" id="canvas-frame" style="1000px; height:800px" />
  </div>
</template>

<script>
import * as THREE from 'three'
import { OBJLoader, MTLLoader } from 'three-obj-mtl-loader'
import { CSS2DRenderer, CSS2DObject } from 'three-css2drender'
export default {
  data() {
    return {
      scene: new THREE.Scene(), // 场景
      camera: new THREE.PerspectiveCamera(
        45,
        window.innerWidth / window.innerHeight,
        1,
        10000
      ), // 透视相机
      renderer: new THREE.WebGLRenderer(), // 渲染器
      geometry: new THREE.Geometry(), // 设置物体
      material: new THREE.LineBasicMaterial({ vertexColors: true }), // 设置材料
      cube: {}, // 合起来
      // 开始设置线条
      light: new THREE.DirectionalLight(0xff0000, 1.0, 0)
    }
  },
  mounted() {
    this.threeStart()
  },
  methods: {
    initThree() {
      const width = this.$refs.myBody.clientWidth
      const height = this.$refs.myBody.clientHeight
      this.renderer = new THREE.WebGLRenderer({ antialias: true })
      this.renderer.setSize(width, height)
      this.$refs.myBody.appendChild(this.renderer.domElement)
      this.renderer.setClearColor(0xffffff, 1.0)
    },
    initCamera() {
      this.camera = new THREE.PerspectiveCamera(130, 1.5, 1, 10000)
      this.camera.position.x = 0
      this.camera.position.y = 0
      this.camera.position.z = 600
      this.camera.up.x = 0
      this.camera.up.y = 1
      this.camera.up.z = 0
      this.camera.lookAt(0, 0, 0)
    },
    initScene() {
      this.scene = new THREE.Scene()
    },
    initLight() {
      var light = new THREE.AmbientLight(0xffffff)
      light.position.set(100, 100, 200)
      this.scene.add(light)
      var light1 = new THREE.PointLight(0x00ff00)
      light1.position.set(0, 0, 300)
      this.scene.add(light1)
    },
    initObject() {
      var geometry = new THREE.CylinderGeometry(80, 100, 400)
      var material = new THREE.MeshLambertMaterial({ color: 0x32d3eb })
      var mesh = new THREE.Mesh(geometry, material)
      this.scene.add(mesh)
    },
    animation() {
      this.camera.position.x = this.camera.position.x += 3
      this.camera.position.y = this.camera.position.y += 3
      this.renderer.render(this.scene, this.camera)
      requestAnimationFrame(this.animation)
    },
    threeStart() {
      this.initThree()
      this.initCamera()
      this.initScene()
      this.initLight()
      this.initObject()
      this.animation()
    },
    consoleObj() {
      console.log(THREE.REVISION)
      console.log(OBJLoader)
      console.log(MTLLoader)
      console.log(CSS2DRenderer)
      console.log(CSS2DObject)
    }
  }
}
</script>
<style lang="less" scoped>
#canvas_frame {
  border: none;
  cursor: pointer;
   100%;
  height: 600px;
  background-color: #eeeeee;
}
</style>