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how to convert an ifc file into citygml file ?

2021-05-20
2021-05-22
  • FatimaZahra TOUILE

    Hi everybody, i hope you re fine .
    I need to develop a web app that can convert any ifc file uploaded into cityGML format in order to visualize it on 3D Map( Cesium) . Any suggestions about how to proceed ?

    Thank you

     

    Last edit: FatimaZahra TOUILE 2021-05-20
  • Thomas Krijnen

    Thomas Krijnen - 2021-05-21

    Strictly speaking CityGML is a very different format from IFC (slide 20 https://www.slideshare.net/berlotti/citygml-extension-for-bim-and-ifc) so you need a lot of geometric processing to split the solid body geometries in IFC to a closed shell of surfaces for CityGML. Have a look at https://github.com/tudelft3d/ifc2citygml that aims to do this using CGAL.

     
    • FatimaZahra TOUILE

      Thank you for your reply .
      for the GitHub repository i really do not understand the code ? and how can i link it with the web app ?

       
  • Thomas Krijnen

    Thomas Krijnen - 2021-05-22

    for the GitHub repository i really do not understand the code

    It takes some time to get familiar with CGAL. It's an advanced C++ library that depends a lot on templates.

    how can i link it with the web app ?

    I imagine some sort of task queue that would run the conversion.

     

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