Json管道数据生成模型

• 部分json管道数据无法直接识别到FVS中，需要转换为网格模型再导出为glb模型
• 需要先处理json数据，通过qgis编辑并导出dxf格式，再导入到blender中生成网格，处理材质后导出glb模型SON转模型，必然可以通过手动来进行转化：

  • 优点：完全是自己可控的，并且需要哪些字段就转化哪些字段，对于不需要的，忽略即可；并且继承关系也会一目了然

  • 缺点：麻烦，并且容易出错；

  下面是我之前针对上面的数据，写的JSON转Model的模型类：

• 三. json_serializable
• json_serializable是dart官方推荐和提供的JSON转Model的方式：
•  
• 一个自动化源代码生成器来为你生成 JSON 序列化数据模板；
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• 由于序列化数据代码不再需要手动编写或者维护，你可以将序列化 JSON 数据在运行时的异常风险降到最低；
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• 第一步：添加相关的依赖
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• 依赖分为项目依赖（dependencies），开发依赖（dev_dependencies）:
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• 注意：需要执行flutter pub get确保我们的项目中有这些依赖
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