3d 地球与卫星绕地飞行

1 创建场景
2 创建相机
3 创建地球模型
4 创建卫星中心
5 创建卫星圆环及卫星
6 创建控制器
7 创建渲染器

<template><div class="home3dMap" id="home3dMap"></div>
</template><script>
import * as THREE from 'three'
import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls'
export default {name:"home3dMap",data(){return {scene:null,		//场景camera:null,   //相机meshMaterial:null,  //网络模型controls:null,  //控制器renderer:null,  //渲染器satellites:[],   //卫星（数组） }},components:{},created(){},beforeDestroy(){},mounted(){//初始化this.init();},methods:{init(){this.createScene();   //创建场景this.createMesh();    //创建几何体this.createLight();   //创建光源this.createCamera();  //创建相机this.createRender();  //创建渲染器this.createControls();   //创建轨道控制器this.animate();},//创建场景createScene(){let scene = new THREE.Scene();this.scene = scene;},//创建几何体createMesh(){//地球let geometry = new THREE.SphereGeometry( 70, 32, 16);let earthImgSrc = require('@/assets/img/home/home3dMapBackground.png');//材质let earthMater = new THREE.MeshPhongMaterial({map: new THREE.TextureLoader().load(earthImgSrc),transparent:true,depthWrite:false,});//网络模型对象 -- 地球let meshMaterial = new THREE.Mesh(geometry,earthMater);//地球模型this.meshMaterial = meshMaterial;//添加到场景中this.scene.add(meshMaterial);//添加圆环this.initSatellite(meshMaterial);},//添加圆环initSatellite(meshMaterial){//返回一个卫星和轨道的组合体// satelliteSize/卫星大小   satelliteRadius/卫星旋转半径   rotation	/组合体的旋转方向     speed/卫星运动速度// 圆环图片let sadImgSrc = require('@/assets/img/control/satellite.png');//循环卫星   假设有3颗卫星for(let i=0; i<3; i++){let satelliteSize = 12,satelliteRadius=0,rotation={x:0,y:0,z:0},speed=0;if(i==0){satelliteRadius = 80;rotation.x = -Math.PI * 0.35;rotation.y = Math.PI * 0.25;rotation.z = 0;speed = 0.004;}else if(i==1){satelliteRadius =100;rotation.x = -Math.PI * 0.35;rotation.y = -Math.PI * 0.2;rotation.z = 0;speed = 0.005;}else{satelliteRadius = 86;rotation.x = -Math.PI * 0.25;rotation.y = Math.PI * 0.15;rotation.z = 0;speed = 0.003;}//卫星中心let earthGeometry = new THREE.SphereGeometry(0,0,0); //材质let earthMater = new THREE.MeshPhongMaterial({color:0xa0a0a0,});let centerMesh = new THREE.Mesh(earthGeometry,earthMater);//卫星圆环let circleGeometry = new THREE.RingGeometry(satelliteRadius, satelliteRadius + 0.3, 100, 1);//材质let circleMater = new THREE.MeshBasicMaterial({color:0xffffff,side: THREE.DoubleSide})//网络模型对象 -- 卫星圆环let track = new THREE.Mesh(circleGeometry,circleMater);let satellite = new THREE.Sprite(new THREE.SpriteMaterial({map: new THREE.TextureLoader().load(sadImgSrc),blending: THREE.AdditiveBlending}));//卫星大小satellite.scale.x = satellite.scale.y = satellite.scale.z = 12;//卫星旋转半径satellite.position.set(satelliteRadius, 0, 0);let pivotPoint = new THREE.Object3D();pivotPoint.add(satellite);pivotPoint.add(track);//卫星中心模型添加卫星对象centerMesh.add(pivotPoint);centerMesh.rotation.set(rotation.x, rotation.y, rotation.z);//添加到场景中this.scene.add(centerMesh);//添加卫星this.satellites.push({satellite:centerMesh, speed:speed, address:rotation});}},//创建光源createLight(){// 环境光const ambientLight = new THREE.AmbientLight(0xcccccc, 2)this.scene.add(ambientLight)// 平行光let directionalLight = new THREE.DirectionalLight(0xffffff, 0.2)directionalLight.position.set(1, 0.2, 0).normalize()// 平行光2let directionalLight2 = new THREE.DirectionalLight(0xff2ffff, 0.2)directionalLight2.position.set(1, 0.2, 0.1).normalize()this.scene.add(directionalLight)this.scene.add(directionalLight2)// 平行光3let directionalLight3 = new THREE.DirectionalLight(0xffffff, 0)// 开启阴影directionalLight3.castShadow = true// 设置光边界// directionalLight3.shadow.camera.top = 18// directionalLight3.shadow.camera.bottom = -10// directionalLight3.shadow.camera.left = -52// directionalLight3.shadow.camera.right = 12this.scene.add(directionalLight3)},//创建相机createCamera(){//渲染区域  宽高为  960/685let camera = new THREE.PerspectiveCamera(60, 960 / 685, 1, 10000)//设置相机位置camera.position.set(50, -10, 200)//设置相机方向camera.lookAt(0, 0, 0)this.camera = camera;this.scene.add(this.camera);},//创建渲染器createRender(){let element = document.getElementById("home3dMap");//创建渲染器let renderer = new THREE.WebGLRenderer({antialias:true, alpha:true})renderer.setSize(960,685)   //设置渲染区域尺寸renderer.shadowMap.enabled = true;   //显示阴影renderer.shadowMap.type = THREE.PCFSoftShadowMap;renderer.setClearColor(0x3f3f3f, 0);   //设置背景颜色this.renderer = renderer;element.appendChild(this.renderer.domElement)},//创建轨道控制器createControls(){let controls = new OrbitControls(this.camera, this.renderer.domElement);controls.enableDamping = true;controls.maxZoom = Infinity;this.controls = controls;},//循环animate(){this.controls.update();  //控制阻尼器//地球自传this.meshMaterial.rotation.y += 0.0015;this.renderer.render(this.scene, this.camera);for(let i=0; i<this.satellites.length; i++){this.satellites[i].satellite.rotation.z -= this.satellites[i].speed;}requestAnimationFrame(this.animate.bind(this));},},
}
</script><style>.home3dMap{width:100%;height:100%;}
</style>