maptalks+three.js+vue webpack實現二維地圖上貼三維模型操作
我們不是走在坑裡就是走在前往坑的路上_(:зゝ∠)_
最終效果如圖:(地圖上新增一個“三維地圖”的toolbar按鈕,點選後在二維地圖上貼上建好的三維模型點選顯示彈框)
以下都在已經引入並且初始化maptalks地圖的基礎上,如何引入使用maptalks可以檢視以下文章
https://www.jb51.net/article/192983.htm
1、安裝maptalks.three包
npm install maptalks.three
2、安裝three包
npm install three
3、安裝obj-loader和mtl-loader包
npm i --save three-obj-mtl-loader
4、引入model模型檔案到public下(放在這裡是因為打包後讀取路徑問題,目前發現放在這裡才能在打包後正確讀取)
5、Vue頁面程式碼
引入包
import * as THREE from 'three' import * as maptalks from 'maptalks' import { ThreeLayer } from 'maptalks.three' import { MTLLoader,OBJLoader } from 'three-obj-mtl-loader'
初始化的地圖物件是
this.map
下面是渲染三維模型的方法
// 渲染三維 draw3D() { const that = this // 三維地圖 var three_flag = false // ///單體化互動開始 var INTERSECTED this.map.on('click',function(e) { // console.log(e) var raycaster = new THREE.Raycaster() var mouse = new THREE.Vector2() const camera = threeLayer.getCamera() const scene = threeLayer.getScene() if (!scene) return const size = that.map.getSize() const width = size.width; const height = size.height mouse.x = (e.containerPoint.x / width) * 2 - 1 mouse.y = -((e.containerPoint.y) / height) * 2 + 1 raycaster.setFromCamera(mouse,camera) raycaster.linePrecision = 3 var intersects = raycaster.intersectObjects(scene.children,true) // var intersects = raycaster.intersectObject(points); if (!intersects) return if (Array.isArray(intersects) && intersects.length === 0) return console.log(intersects) // 這裡我們操作第一個相交的物體 if (intersects.length > 0) { if (INTERSECTED != intersects[0].object) { if (INTERSECTED) { // INTERSECTED.material.color.setHex(INTERSECTED.currentHex); // INTERSECTED.scale.set(1,1,1); if (INTERSECTED.material.length === undefined) { INTERSECTED.material.color.setHex(INTERSECTED.currentHex) } else { for (var i = 0; i < INTERSECTED.material.length; i++) { INTERSECTED.material[i].color.setHex(INTERSECTED.currentHex) } } } INTERSECTED = intersects[0].object // 設定相交的第一個物體的顏色 // INTERSECTED.currentHex = INTERSECTED.material[0].color.getHex(); INTERSECTED.currentHex = 16777215 // 將該物體設為隨機的其他顏色 // INTERSECTED.material.opacity = 0.2; // INTERSECTED.material.transparent = true; // INTERSECTED.material.opacity = 0.2; // INTERSECTED.material.needsUpdate = true; // INTERSECTED.material.transparent = false; // INTERSECTED.material.color.setHex(0xff0000); if (INTERSECTED.material.length === undefined) { INTERSECTED.material.color.setHex(0x1E90FF) } else { for (var i = 0; i < INTERSECTED.material.length; i++) { INTERSECTED.material[i].color.setHex(0x1E90FF) } } } // ////////////// var lonlat = e.coordinate if (true) { var options = { 'autoOpenOn': 'null',// set to null if not to open window when clicking on map 'single': true,'width': 410,'height': 190,'custom': true,'autoCloseOn': 'click','dy': -316,'content': '<div class="content build-content">' + '<div class="pop-img"><img src="http://pde56fqkk.bkt.clouddn.com/1544760152593.jpg"/><p class="pop-name build-pop-name" id="viewDetial"><span class="text-ellipsis" title="浦軟大廈">浦軟大廈</span><a>詳情<i class="el-icon-arrow-right"></i></a></p></div>' + '<div class="pop-txt"><ul><li>入駐企業:<span>12 家</span> </li><li>登記人員:<span>1000 人</span> </li><li>今日訪客:<span>100 人</span> </li><li>登記車輛:<span>500 輛</span> </li><li>實時人數:<span>0 人</span> </li><li>監控點位:<span>0 個</span> </li><li>人臉門禁:<span>0 個</span> </li><li>消防設施:<span>0 個</span></li></ul></div>' + '</div>' } var infoWindow = new maptalks.ui.InfoWindow(options) infoWindow.addTo(that.map).show(lonlat) } } else { // 當射線離開的時候變為原來的顏色 if (INTERSECTED) { // INTERSECTED.material.color.set(INTERSECTED.currentHex); if (INTERSECTED.material.length === undefined) { INTERSECTED.material.color.setHex(INTERSECTED.currentHex) } else { for (var i = 0; i < INTERSECTED.material.length; i++) { INTERSECTED.material[i].color.setHex(INTERSECTED.currentHex) } // INTERSECTED.scale.set(1,1); } } INTERSECTED = null } threeLayer.renderScene() }) function closeBox() { var theClose = document.getElementById('close_id') var cont = document.getElementById('infow') cont.style.display = 'none' } // ///單體化互動結束 // the ThreeLayer to draw buildings // //ThreeLayer初始化 var threeLayer = new ThreeLayer('t_forbcmp',{ forceRenderOnMoving: true,forceRenderOnRotating: true,animation: true }) threeLayer.prepareToDraw = function(gl,scene,camera) { var me = this // var light = new THREE.PointLight(0xffffff); // camera.add(light); // let axes=new THREE.AxesHelper(200000000); // scene.add(axes); var light0 = new THREE.DirectionalLight('#ffffff',0.5) light0.position.set(800,800,800).normalize() light0.castShadow = true camera.add(light0) // 環境光 var light01 = new THREE.AmbientLight('#f7fdf9') light01.castShadow = true scene.add(light01) // var light1 = new THREE.DirectionalLight("#ffffff"); // light1.position.set(-800,-800,800).normalize(); // light1.castShadow = true; // camera.add(light1); // 測試載入obj和mtl貼圖 // addmtlLoaderTest(13.438186479666001,52.530305072175594); // addmtlLoaderTestforMTL(13.436186479666001,52.530305072175594); // 相對路徑引數,var mtlPath = process.env.BASE_URL + 'model/obj/' var mtlName = '3d_puruan_new.mtl' var objPath = process.env.BASE_URL + 'model/obj/' var objName = '3d_puruan3.obj' var objlon = 121.60499979860407 var objlat = 31.20150084741559 addLoaderForObj(objlon,objlat,mtlPath,mtlName,objPath,objName) } threeLayer.addTo(that.map).hide() // ////////////////載入模型相關 // 載入obj+mtl function addLoaderForObj(lon,lat,objName) { const me = threeLayer const scene = me.getScene() const scale = -0.0007 var mtlLoader = new MTLLoader() // 載入貼圖mtl mtlLoader.setPath(mtlPath) mtlLoader.load(mtlName,function(materials) { materials.preload() var objLoader = new OBJLoader() objLoader.setMaterials(materials) // 載入模型obj Math.PI*3/2 objLoader.setPath(objPath) objLoader.load(objName,function(object) { object.traverse(function(child) { if (child instanceof THREE.Mesh) { child.scale.set(scale,scale,scale) child.rotation.set(-Math.PI / 2,Math.PI,0) // 賦予基礎材質的顏色,無色(0xFFFFFF)除錯色0x0000FF for (var i = 0; i < child.material.length; i++) { child.material[i].color.setHex(0x0000FF) } } }) var v = threeLayer.coordinateToVector3(new maptalks.Coordinate(lon,lat)) object.position.set(v.x,v.y,0) scene.add(object) mtlLoaded = true threeLayer.renderScene() }) // var mm = new THREE.MeshPhongMaterial({color:0xFF0000}); // objLoader.setMaterials( mm ); // objLoader.setMaterials(materials); }) } var toolbar = new maptalks.control.Toolbar({ position: { 'right': 40,'bottom': 40 },items: [ { item: '二三維圖層切換',click: function() { if (three_flag === false) { that.map.animateTo({ center: [121.6050804009,31.2015354151],zoom: 18,pitch: 45 },{ duration: 2000 }) threeLayer.show() three_flag = true } else { that.map.animateTo({ center: [121.6050804009,pitch: 0 },{ duration: 2000 }) threeLayer.hide() three_flag = false } console.log('obj模型') } } ] }).addTo(this.map) }
上面這段程式碼需要注意的是模型資料檔案的讀取路徑
// 相對路徑引數,var mtlPath = process.env.BASE_URL + 'model/obj/' var mtlName = '3d_puruan_new.mtl' var objPath = process.env.BASE_URL + 'model/obj/' var objName = '3d_puruan3.obj'
關於process.env.BASE_URL的值可以在vue.config.js裡自定義設定(cli3.0)
baseUrl: process.env.NODE_ENV === 'production' ? '/bcmp-web/' : '/',
關於draw3D的程式碼我沒有進行詳細的解釋,如果需要會出一個詳細版的方法使用介紹
補充知識:Vue npm安裝Vue常用依賴,axios、element ui、mockjs
新增axios依賴:
npm install axios
新增element-ui:
npm i element-ui -S
新增 mockjs:
npm install mockjs
以上這篇maptalks+three.js+vue webpack實現二維地圖上貼三維模型操作就是小編分享給大家的全部內容了,希望能給大家一個參考,也希望大家多多支援我們。