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.obj to .ifc 3DBAGViewer and BlenderBIM

  1. C by Coen on 10 Aug 2021, edited 3 Oct 2021 # +2 votes

    This is not really a bug report or question, but more knowledge sharing about the cool stuff Blender BIM is capable of. I can't imagine Revit handling this so well.

    In the Netherlands there is a 3D BAG Viewer, it's a university/governmental institute which provides 3D building information of the Netherlands.

    They made it possible to download this information in several formats. I downloaded a tile and imported the .obj format into Blender.

    They provide a manual on how to get a correct .obj import

    https://docs.3dbag.nl/nl/delivery/obj/

    I tried exporting the whole geometry as an IfcBuildingElementProxy and it worked flawless.

    In a few seconds I had the entire geometry in IFC to scale.

    Next cool step would to find out how to assign the information from the 3DBAG viewer to IFC and split the geometry objects out by number to IfcBuilding.

  2. L by LaurensJN on 10 Aug 2021 # +2 votes
  3. L by LaurensJN on 10 Aug 2021 # +1 votes

    If you'd like to do it in a more visual way, I'd suggest using the Blender Up3date plugin and again download data as CityJSON. It splits all buildings on (1) IDs without geometries (2) every LOD gets a separate object. From there you could use the BlenderBIM addon to convert all buildings to IFC (and maybe even preserve metadata, that .obj files do not have!).

  4. B by bitacovir on 10 Aug 2021 # +1 votes

    I encourage you to write tutorials or some documentation in our wiki about how to do these kind of workflows.

  5. M by magicalcloud_75 on 3 Oct 2021, edited 3 Oct 2021 #

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