Skip to content

Implement a automatic BIM(IFC model) to Geo(CityJSON model) conversion for one building

Notifications You must be signed in to change notification settings

YitongXia/BIM_processing

Folders and files

NameName
Last commit message
Last commit date

Latest commit

 

History

14 Commits
 
 
 
 
 
 

Repository files navigation

BIM_processing

This program is a collaboration with Fengyan Zhang(zmocheng@gmail.com), I am mainly responsible for the Convex Hull algorithm, Fengyan is responsible for the algorithm of splitting into individual OBJs and transforming into Polyhedra. Thanks Fengyan!

This program is to implement a automatic BIM(IFC model) to Geo(CityJSON model) conversion for one building. It is implemented in C++ with CGAL library, and Niels Lohmann’s JSON for Modern C++ library.

The workflow of the program is illstrated below: workflow

the original Ifc file looks like:

kit file kit file2

We use IfcConvert to convert IFC model to OBJ model:

IfcConvert --include+=entities IfcSlab IfcDoor IfcWindow IfcWall --weld-vertices --orient-shells --validate KIT.ifc KIT.obj

(KIT.ifc is the self-defined filename)

The outer shell and the inner shell looks like:

shell inner_shell

tips: this program is more suitable for buildings with only one floor.

About

Implement a automatic BIM(IFC model) to Geo(CityJSON model) conversion for one building

Topics

Resources

Stars

Watchers

Forks

Releases

No releases published

Packages

No packages published