IfcOpenShell/src/ifccityjson

IFCCityJSON

Converter for CityJSON files and IFC. Currently only supports one-way conversion from CityJSON to IFC.

-- WARNING --

IFCCityJSON only came into being 14/04/2021. Be prepared for lots of bugs, unfinished implementations and little to no documentation!

Dependencies

• IfcOpenShell (also IfcOpenShell api is needed)
• CJIO

Usage of IFCCityJSON

Following command will execute a conversion from CityJSON to IFC

python ifccityjson.py [-i input file] [-o output file] [-n name of identification attribute]

The example file that could be used is example/3D_BAG_example.json

python ifccityjson.py -i example/3DBAG_example.json -o example/3DBAG_example.ifc -n identificatie

Implemented geometries

• "MultiPoint"
• "MultiLineString"
• "MultiSurface"
• "CompositeSurface"
• "Solid": exterior shell
• "Solid": interior shell
• "MultiSolid"
• "CompositeSolid"
• "GeometryInstance"

TODO

• CityJSON Attributes as IFC properties in 'CityJSON_attributes' pset
• Implement georeferencing
• Do not use template IFC for new IFC file, but make IFC file from scratch
• Create mapping to IFC for all CityJSON object types & semantic surfaces
• Implement conversion of all geometries
• Implement conversion of all LODs instead of online the most detailed