Connecting Spaces of a Stair

alfasst

I was trying to find connected spaces using IfcOpenShell. But I couldn't find a way to extract the spaces connected by a stair. I am using the FZK Haus as the sample file. I have tried the geometry tree approach and was able to find the bottom space connected but not the top space.

Andrej730

@alfasst said:
I was trying to find connected spaces using IfcOpenShell. But I couldn't find a way to extract the spaces connected by a stair. I am using the FZK Haus as the sample file. I have tried the geometry tree approach and was able to find the bottom space connected but not the top space.

Hi! Can you please show the code that didn't worked?
Just tested the code below with bounding box selection:

import ifcopenshell

ifc_file = ifcopenshell.open(r"AC20-FZK-Haus.ifc")

import multiprocessing
import ifcopenshell.geom
from pprint import pprint


def check_intersections(ifc_file):
    tree = ifcopenshell.geom.tree()
    settings = ifcopenshell.geom.settings()
    iterator = ifcopenshell.geom.iterator(
        settings, ifc_file, multiprocessing.cpu_count()
    )
    if iterator.initialize():
        while True:
            tree.add_element(iterator.get_native())
            if not iterator.next():
                break

    element = ifc_file.by_type("IfcStair")[0]
    pprint(tree.select_box(element))


[#59290=IfcSlab('2RGlQk4xH47RHK93zcTzUL',#12,'Slab-033',$,$,#59253,#59286,'DA0A17AC-B773-47AC-99-C5-D390C73AD5CC',.FLOOR.),
 #33774=IfcSpace('0Lt8gR_E9ESeGH5uY_g9e9',#12,'5',$,$,#33683,#33769,'Wohnen',.ELEMENT.,$,$),
 #59365=IfcOpeningElement('16PF6khT5_p$Z03P73inyv',#12,'Slab Opening',$,$,#59331,#59361,$,$),
 #39432=IfcMember('1qMEiq1Qz6guq8g1GCODiJ',#12,'Sparren-34',$,$,#39415,#39428,'3A999AF6-1C12-413A-89-B2-BF4A3CAEAD63',$),
 #39186=IfcMember('1NBDw_i_jD$u7IjvwmbPmx',#12,'Sparren-32',$,$,#39169,#39182,'62D6313A-B4FB-45BF-B3-97-10D01124A4F9',$),
 #39309=IfcMember('2DH$OLoObDkAtwqVzNdUnS',#12,'Sparren-33',$,$,#39292,#39305,'E4FF91FA-3AE7-4591-8D-5F-61E57F7BA5DE',$),
 #14502=IfcStair('38a9vdh9bF5Qg28GWyHhlr',#12,'Wendeltreppe',$,$,#502,#14498,'79A67A01-C95B-4209-86-9A-74983B65305C',$),
 #59753=IfcSlab('2IxUUNUVPB6Ob$eicCfP2N',#12,'Dach-2',$,$,#59716,#59749,'BD6D9414-37DF-40A8-88-40-301A32A9A5B5',.ROOF.),
 #49831=IfcRailing('0o5vgCKyTBzO5$QJcI2YDP',#12,'',$,$,#40768,#49827,'00000000-0000-0000-00-00-000000000000',.HANDRAIL.),
 #76214=IfcSpace('2dQFggKBb1fOc1CqZDIDlx',#12,'7',$,$,#76123,#76209,'Galerie',.ELEMENT.,$,$)]

check_intersections(ifc_file)

alfasst

@Andrej730 Thanks. This code is working. I think the part that is not working in my code is where i specified IfcSpace as include items.

        iterator = ifcopenshell.geom.iterator(
            settings, ifc_file, multiprocessing.cpu_count(),  include=("IfcSpace")
        )

But if i remove the include parameter, it is working. Thanks again.