<template>  <div class="container" ref="container">
  </div></template>
<script >import * as THREE from "three";import { ref } from "vue";//添加一个轨道控制器import { OrbitControls} from "three/examples/jsm/controls/OrbitControls";//导入动画库import gsap from "gsap";//导入dat.guiimport * as dat from "dat.gui";

export default {  name: 'App',  data() {    return {      renderer: null,      scene: null,      camera: null,      cube: null,      clock: null,      animate1: null,      controls: null,      gui: null    }  },  mounted() {    //1.创建场景
    const scene = new THREE.Scene();
    //2.创建相机(透视相机)    /**     * 构造器     * PerspectiveCamera( fov : Number, aspect : Number, near : Number, far : Number )     * fov — 摄像机视锥体垂直视野角度     * aspect — 摄像机视锥体长宽比     * near — 摄像机视锥体近端面     * far — 摄像机视锥体远端面     */    const camera = new THREE.PerspectiveCamera(    75,    window.innerWidth / window.innerHeight,    0.1,    1000    );    //设置相机位置:x,y,z轴位置    camera.position.set(0,0,10);    //添加相机到场景中    scene.add(camera);    this.scene=scene;this.camera=camera;
    //设置cube纹理加载器    const cubeTextureLoader = new THREE.CubeTextureLoader();    const envMapTexture =  cubeTextureLoader.load([      "static/textures/environmentMaps/1/px.jpg",      "static/textures/environmentMaps/1/nx.jpg",      "static/textures/environmentMaps/1/py.jpg",      "static/textures/environmentMaps/1/ny.jpg",      "static/textures/environmentMaps/1/pz.jpg",      "static/textures/environmentMaps/1/nz.jpg",    ]);
    //创建物体    const sphereGeometry = new THREE.SphereBufferGeometry(1,20,20);    //创建材质    const material = new THREE.MeshStandardMaterial({  /*    metalness: 0.7,//金属      roughness: 0.1,//光滑 */   //   envMap: envMapTexture,    }
    );    const sphere = new THREE.Mesh(sphereGeometry,material);    //球体投射阴影    sphere.castShadow = true;    scene.add(sphere);
    const planeGeometry = new THREE.PlaneBufferGeometry(10,10);    const plane = new THREE.Mesh(planeGeometry,material);    plane.position.set(0,-1,0);    plane.rotation.x = -Math.PI/2;    //接收阴影    plane.receiveShadow = true;    scene.add(plane);





//标准材质必须要有光    //添加灯光    //环境光    const light = new THREE.AmbientLight(0xffffff,0.5);//0.1强度    scene.add(light);
    //直线光源    const directionalLight = new THREE.DirectionalLight;    directionalLight.position.set(10,10,10);    directionalLight.castShadow= true;//开启阴影渲染    scene.add(directionalLight);



    //4.初始化渲染器    const renderer = new THREE.WebGLRenderer();      //设置渲染器的尺寸大小    renderer.setSize(window.innerWidth,window.innerHeight);    //开启场景中的阴影贴图    renderer.shadowMap.enabled = true;
    this.renderer=renderer;      //将webgl渲染的canvas内容添加到div      //document.body.append(renderer.domElement);    this.$refs['container'].appendChild(renderer.domElement);

      //使用渲染器，通过相机将场景渲染进来      renderer.render(scene,camera);
    //5.创建轨道控制器    const  controls = new OrbitControls(camera,renderer.domElement);    //设置控制器阻尼，让控制器更有真实效果，必须在动画循环调用update    controls.enableDamping = true;    this.controls=controls;
    //6.添加坐标轴辅助器      //size -- (可选的) 表示代表轴的线段长度. 默认为 1.    const axesHelper = new THREE.AxesHelper( 5 );    scene.add( axesHelper );
    //双击控制屏幕进入全屏、退出全屏    window.addEventListener("dblclick",()=>{      const fullScreenElement =document.fullscreenElement;
      if(!fullScreenElement){        //让画布对象全屏        this.renderer.domElement.requestFullscreen();      }else{        //退出全屏，使用document对象        document.exitFullscreen();      }
    })
    //监听画面变化，更新渲染画面    window.addEventListener("resize",()=>{      console.log("画面变化了");      //更新摄像头      this.camera.aspect = window.innerWidth /window.innerHeight;      //更新摄像机的投影矩阵      this.camera.updateProjectionMatrix();      //更新渲染器      this.renderer.setSize(window.innerWidth,window.innerHeight);      //设置渲染器的像素比      this.renderer.setPixelRatio(window.devicePixelRatio);
    })
    this.renders();  },  methods: {    renders(){

       this.controls.update();       this.renderer.render(this.scene,this.camera);    //  requestAnimationFrame(this.renders());//此行代码会出现threejs requestAnimationFrame 导致的call stack超出上限的问题       requestAnimationFrame(this.renders.bind(this));
    },
  }}</script>
<style>  *{    margin: 0;    padding: 0;  }.container{  height: 100vh;  width: 100vw;  background-color: #f0f0f0;}</style>