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vue2.0項(xiàng)目集成Cesium的實(shí)現(xiàn)方法

更新時(shí)間：2019年07月30日 11:07:03 作者：林珞

這篇文章主要介紹了vue2.0項(xiàng)目集成Cesium的實(shí)現(xiàn)方法，文中通過(guò)示例代碼介紹的非常詳細(xì)，對(duì)大家的學(xué)習(xí)或者工作具有一定的參考學(xué)習(xí)價(jià)值，需要的朋友們下面隨著小編來(lái)一起學(xué)習(xí)學(xué)習(xí)吧

安裝cesium

在已有項(xiàng)目中執(zhí)行,

npm i cesium

修改配置

build/webpack.base.conf.js

1、定義 Cesium 源碼路徑

const cesiumSource = '../node_modules/cesium/Source'

'use strict'
const path = require('path')
const utils = require('./utils')
const config = require('../config')
const vueLoaderConfig = require('./vue-loader.conf')
//--cesium--配置
const cesiumSource = '../node_modules/cesium/Source';

2、在output 里加入sourcePrefix: ' ' 讓webpack 正確處理多行字符串

3、配置 amd參數(shù)

4、module中在rules后添加 unknownContextCritical: false,

module.exports = {
  context: path.resolve(__dirname, '../'),
  entry: {
    app: ["babel-polyfill", './src/main.js']
  },
  output: {
    path: config.build.assetsRoot,
    filename: '[name].js',
    publicPath: process.env.NODE_ENV === 'production' ?
      config.build.assetsPublicPath : config.dev.assetsPublicPath,
    //--cesium--配置------------------------------------
    sourcePrefix: ' '
  },
  //--cesium--配置----------------------------------------
  amd:{
    toUrlUndefined: true
  },
  resolve: {
    extensions: ['.js', '.vue', '.json'],
    alias: {
      'vue$': 'vue/dist/vue.esm.js',
      '@': resolve('src'),
      //--cesium--配置
      'cesium': path.resolve(__dirname, cesiumSource)
    }
  },
  module: {
    rules: [
    ...
    ],
    //--cesium--配置-------------------------------------
    //unknownContextRegExp: /^.\/.*$/
    unknownContextCritical: false,
  }
}

build/webpack.dev.conf.js

1、定義 Cesium 源碼路徑和Cesium Workers 路徑

const cesiumSource = 'node_modules/cesium/Source'
const cesiumWorkers = '../Build/Cesium/Workers'

（注意這里的 node_modules 與webpack.base.conf.js的不同，前面沒有../）

2、定義CESIUM_BASE_URL變量

3、在plugins 中加入下面插件,拷貝靜態(tài)資源

plugins: [
  new webpack.DefinePlugin({
   'process.env': require('../config/dev.env'),
   //--cesium--配置-------------------------------------------
   'CESIUM_BASE_URL': JSON.stringify('') 
  }),
  new webpack.HotModuleReplacementPlugin(),
  new webpack.NamedModulesPlugin(), // HMR shows correct file names in console on update.
  new webpack.NoEmitOnErrorsPlugin(),
  // https://github.com/ampedandwired/html-webpack-plugin
  new HtmlWebpackPlugin({
   filename: 'index.html',
   template: 'index.html',
   inject: true
  }),
  //--cesium--配置---------------------------------------------
  new CopyWebpackPlugin([ { from: path.join(cesiumSource, cesiumWorkers), to: 'Workers' } ]),   //flag
  new CopyWebpackPlugin([ { from: path.join(cesiumSource, 'Assets'), to: 'Assets' } ]),
  new CopyWebpackPlugin([ { from: path.join(cesiumSource, 'Widgets'), to: 'Widgets' } ]),
  new CopyWebpackPlugin([ { from: path.join(cesiumSource, 'ThirdParty/Workers'), to: 'ThirdParty/Workers' } ]),
  new CopyWebpackPlugin([ { from: 'ThirdParty', to: 'ThirdParty' } ]),

  // copy custom static assets
  new CopyWebpackPlugin([
   {
    from: path.resolve(__dirname, '../static'),
    to: config.dev.assetsSubDirectory,
    ignore: ['.*']
   }
  ])
 ]

build/webpack.prod.conf.js

1、定義

 const cesiumSource = 'node_modules/cesium/Source';
 const cesiumWorkers = '../Build/Cesium/Workers';

2、定義'CESIUM_BASE_URL'變量

3、在plugins 中加入下面插件,拷貝靜態(tài)資源

plugins: [
  // http://vuejs.github.io/vue-loader/en/workflow/production.html
  new webpack.DefinePlugin({
   'process.env': env,
   //--cesium--配置--------------------------------------
   'CESIUM_BASE_URL': JSON.stringify('static')
  }),
  ...
  new HtmlWebpackPlugin({
    ...
  },
  //--cesium--配置--------------------------------------
  new CopyWebpackPlugin([ { from: path.join(cesiumSource, cesiumWorkers), to: 'static/Workers' } ]),//flag
  new CopyWebpackPlugin([ { from: path.join(cesiumSource, 'Assets'), to: 'static/Assets' } ]),
  new CopyWebpackPlugin([ { from: path.join(cesiumSource, 'Widgets'), to: 'static/Widgets' } ]),
  new CopyWebpackPlugin([ { from: path.join(cesiumSource, 'ThirdParty/Workers'), to: 'ThirdParty/Workers' } ]),
  new CopyWebpackPlugin([ { from: 'ThirdParty', to: 'ThirdParty' } ]),
  ...

ThirdParty

在項(xiàng)目根目錄新建文件夾ThirdParty，放入draco_decoder.wasm文件，在加載gltf模型文件需要用到

以上就是本文的全部?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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