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基于传统JS技术栈的 Mars3D🌎功能示例

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功能示例项目,是基于Mars3D 平台做的一个按每个单独功能进行单页面展示、并且支持修改编辑代码实时运行的一个演示功能的系统。
主要用于开发人员学习了解 Mars3D 每个功能的使用、用于业务人员了解体验 Mars3D 具备的功能点。

首先建议您学习浏览一遍我们功能示例的源码(源码中会有大量注释),阅读源码时可以结合查阅API文档来理解类及方法的作用和参数说明等。

项目介绍

这是一个基于原生JS开发的 Mars3D 功能示例 演示项目。

> 如果您不熟悉原生JS,也可以阅读:功能示例Vue版功能示例React版

项目特性

  • 独立页面:每一个页面是一个单独的示例,依赖少,独立运行。
  • 适合不同技术栈: 原生JS开发, 适合不同技术栈用户理解

视频讲解

建议先看一遍视频讲解,再实际操作,您可以新页面查看高清视频

下载运行项目

下载代码

git clone git@github.com:marsgis/mars3d-es5-example.git
  • Gitee:国内码云,下载速度快些。
git clone git@gitee.com:marsgis/mars3d-es5-example.git

image

运行环境

运行前建议从http://mars3d.cn/download.html下载最新mars3d类库后覆盖至lib/目录下,更新mars3d为最新版本。

运行方式1:使用vscode及其插件

在任意开发编辑器(如vscode等)或http服务器(如node、nginx、tomcat、IIS等)下直接运行浏览index.html或example目录下各对应示例页面即可。

建议使用VScode工具打开代码目录(请参考开发环境搭建教程安装好VScode 及 Live Server插件),运行index.html页面即可。

如果只想浏览单个示例,也可以参考下图通过Live Server访问对应示例的页面
image

运行方式2:运行npm命令

首次运行前安装依赖

npm install

//或使用代理
npm i --registry=http://registry.taobao.org

启动开发环境

npm run serve

编译构建

npm run build //编译后生成在dist目录,拷贝出去发布即可
npm run serve:dist  //测试dist运行状态

// 或者将dist文件夹发布在自己的服务数据上

运行效果

在线体验

image

如何反馈问题?

  • 发现您发现项目中存在的问题或者需要优化的地方;
  • 如果您有一些自己全新编写的示例,希望也开源与大家分享。

提交方式:
- 欢迎在github或gitee上提交PR
- 如果对git不熟悉,也可以整理示例代码发送邮件到 wh@marsgis.cn 由我们来整理集成。

项目架构

主要目录说明

mars3d-es5-example
│───config              列表配置信息及截图
│───example             示例代码,每个示例页面可以单独运行【重要】
│───css                 公共CSS样式文件
│───img                 公共图片文件
│───js                  公共JS文件
│───lib                 示例依赖的类库
│   └─include-lib.js    lib类库统一配置文件
│───widgets             基础项目模块资源,便于演示部分示例
└───index.html          列表页(访问入口)

与示例相关的2个主要目录是:examplelib

include-lib.js文件说明

我们当前原生JS版本功能示例页面,第三方类库及我们的sdk类库都存放在lib目录下,每个目录均有README.md文件说明该类库的github地址、官网和用途等信息。

image

为了方便切换和引入第3方lib,我们编写了一个独立的js文件include-lib.js来统一调用使用第3方lib,在需要的页面按下面方式引入lib:
html <!--第三方lib--> <script type="text/javascript" src="/lib/include-lib.js" libpath="/lib/" include="font-awesome,mars3d"></script>
该方式等价于(如不习惯include-lib.js,也可以改为下面演示的直接引入方式):

<!--对应font-awesome-->
<link rel="stylesheet" href="/lib/fonts/font-awesome/css/font-awesome.min.css">

<!--对应turf-->
<script type="text/javascript" src="/lib/turf/turf.min.js"></script>

<!--对应mars3d-->
<link rel="stylesheet" href="/lib/Cesium/Widgets/widgets.css">
<script type="text/javascript" src="/lib/Cesium/Cesium.js"></script>
<link rel="stylesheet" href="/lib/mars3d/mars3d.css">
<script type="text/javascript" src="/lib/mars3d/mars3d.js"></script>

添加新的示例

复制example\00_model.html文件后改名,并修改代码即可。

阅读示例源码和调试学习

示例的目的是演示平台的每个功能点,可以按需求或兴趣去学习每一个示例,
- (1)学习中可以查询相关类的API文档
- (2)尝试修改源码中参数、方法等,来体验不同的呈现效果。

开发中常见问题

1. 局域网离线使用时注意事项

平台所有代码层面来说支持离线运行和使用的,但需要注意的是离线时的地图服务的相关处理。

如果局域网内有相关地形、卫星底图服务可以按内网服务类型和URL地址替换下config.json构造Map的代码中的默认地形和底图。

如果局域网内没有相关服务,可以按下面处理:
- 修改config.json中terrain配置中,将已有的"show": true配置,改为"show": false
- 修改config.json中basemaps数组配置中,将已有的"show": true的图层,将该值改为"show": false ,并将单张图片或离线地图加上"show": true,并修改相关URL地址。
- 您也可以参考教程发布三维数据服务进行部署离线地图服务,里面也有一些示例离线数据。

Mars3D 是什么

Mars3D平台色宁科技研发的一款基于 WebGL 技术实现的三维客户端开发平台,基于Cesium优化提升与B/S架构设计,支持多行业扩展的轻量级高效能GIS开发平台,能够免安装、无插件地在浏览器中高效运行,并可快速接入与使用多种GIS数据和三维模型,呈现三维空间的可视化,完成平台在不同行业的灵活应用。

> Mars3D平台可用于构建无插件、跨操作系统、 跨浏览器的三维 GIS 应用程序。平台使用 WebGL 来进行硬件加速图形化,跨平台、跨浏览器来实现真正的动态大数据三维可视化。通过 Mars3D产品可快速实现浏览器和移动端上美观、流畅的三维地图呈现与空间分析。

相关网站

版权说明

  1. Mars3D平台由色宁科技自主研发,拥有所有权利。
  2. 任何个人或组织可以在遵守相关要求下可以免费无限制使用。
编辑 | blame | 历史 | 原始文档
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