[IfcOpenShell-Python] How to update an ifc2x3 to ifc4 with a script?

M by Martin156131 on 7 Feb 2023, edited 8 Feb 2023 #

So in BlenderBIM there is the possibility to update an ifc2x3 to ifc4

What is the command behind it? so that can be used for an script?

T by theoryshaw on 7 Feb 2023 # +4 votes

does this get you started?

M by Martin156131 on 8 Feb 2023 #

Thanks @theoryshaw

So it was the recipe https://github.com/IfcOpenShell/IfcOpenShell/blob/v0.7.0/src/ifcpatch/ifcpatch/recipes/Migrate.py

M by Martin156131 on 8 Feb 2023, edited 8 Feb 2023 # +1 votes

So i wrote that little script. The varibale path_to_directory is just a directory, the script takes all the ifc file in a given directory and tries to make an IFC4 and optimize a litte bit.


import ifcpatch

import ifcopenshell

from pathlib import Path


for path in path_to_directory.glob("*.ifc"):

    abs_path = path.resolve()

    name = path.name

    model = ifcopenshell.open(abs_path)

    output = ifcpatch.execute({"input": name, 

                  "file": model,"recipe": "Migrate", "arguments": ["IFC4"]})



    new_name_ifc4 =  f"IFC4-{name}"

    path_to_new = new_Folder / new_name_ifc4

    ifcpatch.write(output, str(path_to_new))



    output_2 = ifcpatch.execute({"input": new_name_ifc4,"file": output, "recipe": "RecycleNonRootedElements", "arguments": []})



    name_ifc4_opt =  f"Opt-IFC4-{name}"



    path_to_new = new_Folder / name_ifc4_opt



    ifcpatch.write(output,  str(path_to_new))