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IFCtoLBD.py
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from datetime import datetime
import ifcopenshell as ios
import Namespace
import os
import re
global baseURI
inputFile = ""
targetFile = ""
includeBuildingElements = True
includeBuildingProperties = True
includeQuantities = True
includeGeometry = False
def convertIFCSPFtoTTL(inputFile, outputFile):
inputFile = inputFile
outputFile = outputFile
now = datetime.now()
current_time = now.strftime('%Y%m%d_%H%M%S')
DEFAULT_PATH = "http://linkedbuildingdata.net/ifc/resources" + current_time + "/"
global baseURI
baseURI = DEFAULT_PATH
#reading file - IfcSpfReader
model = ios.open(inputFile)
f = open(outputFile, "w")
writeTTLFileContent(model,f)
f.close()
def writeTTLFileContent(model, file):
file.write(writeTTLHeader())
file.write(writeLBDinstances(model,file))
def print_properties(properties, output):
for name, value in properties.items():
if name == "id":
continue
name = cleanString(name)
output += ";\n"
if isinstance(value, int):
output += "\tprops:"+name+" \""+ str(value) +"\"^^xsd:int "
elif isinstance(value, float):
output += "\tprops:"+name+" \""+ str(value) +"\"^^xsd:double "
else:
output += "\tprops:"+name+" \""+ str(value) +"\"^^xsd:string "
return output
""" def print_quantities(quantities, output):
for name, value in quantities.items():
if name == "id":
continue
name = cleanString(name)
output += ";\n"
if isinstance(value, int):
output += "\tprops:"+name+" \""+ str(value) +"\"^^xsd:int "
elif isinstance(value, float):
output += "\tprops:"+name+" \""+ str(value) +"\"^^xsd:double "
else:
output += "\tprops:"+name+" \""+ str(value) +"\"^^xsd:string "
return output """
def cleanString(name):
name = ''.join(x for x in name.title() if not x.isspace())
name = name.replace('\\', '')
name = name.replace('/', '')
return name
def writeTTLHeader():
s = "# baseURI: " + baseURI + "\n"
s+= "@prefix inst: <" + baseURI + "> .\n"
s+= "@prefix rdf: <" + Namespace.RDF + "> .\n"
s+= "@prefix rdfs: <" + Namespace.RDFS + "> .\n"
s+= "@prefix xsd: <" + Namespace.XSD + "> .\n"
s+= "@prefix bot: <" + Namespace.BOT + "> .\n"
s+= "@prefix beo: <" + Namespace.BEO + "> .\n"
s+= "@prefix mep: <" + Namespace.MEP + "> .\n"
s+= "@prefix geom: <" + Namespace.GEOM + "> .\n"
s+= "@prefix props: <" + Namespace.PROPS + "> .\n\n"
s+= "inst: rdf:type <http://www.w3.org/2002/07/owl#Ontology> .\n\n"
return s
def writeLBDinstances(model, f):
output = ""
output += writeSites(model,f)
output += writeBuildings(model,f)
output += writeStoreys(model,f)
output += writeSpaces(model,f)
output += writeElements(model,f)
output += writeInterfaces(model,f)
output += writeZones(model,f)
return output
def writeSites(model,f):
output = ""
for s in model.by_type("IfcSite"):
output += "inst:site_"+str(s.id()) + "\n"
output += "\ta bot:Site ;" + "\n"
if(s.Name):
output += "\trdfs:label \""+s.Name+"\"^^xsd:string ;" + "\n"
if(s.Description):
output += "\trdfs:comment \""+s.Description+"\"^^xsd:string ;" + "\n"
output += "\tbot:hasGuid \""+ ios.guid.expand(s.GlobalId) +"\"^^xsd:string ;" + "\n" # bot:hasGuid no such property in the bot ontology？
output += "\tprops:hasCompressedGuid \""+ s.GlobalId +"\"^^xsd:string "
for reldec in s.IsDecomposedBy:
if reldec is not None:
for b in reldec.RelatedObjects:
output += ";\n"
output += "\tbot:hasBuilding inst:building_"+ str(b.id()) + " "
if(includeBuildingProperties):
site_psets = ios.util.element.get_psets(s)
for name, properties in site_psets.items():
output = print_properties(properties, output)
output += ". \n\n"
return output
def writeBuildings(model,f):
output = ""
for b in model.by_type("IfcBuilding"):
output += "inst:building_"+str(b.id()) + "\n"
output += "\ta bot:Building ;" + "\n"
if(b.Name):
output += "\trdfs:label \""+b.Name+"\"^^xsd:string ;" + "\n"
if(b.Description):
output += "\trdfs:comment \""+b.Description+"\"^^xsd:string ;" + "\n"
output += "\tbot:hasGuid \""+ ios.guid.expand(b.GlobalId) +"\"^^xsd:string ;" + "\n"
output += "\tprops:hasCompressedGuid \""+ b.GlobalId +"\"^^xsd:string "
for reldec in b.IsDecomposedBy:
if reldec is not None:
for st in reldec.RelatedObjects:
output += ";\n"
output += "\tbot:hasStorey inst:storey_"+ str(st.id()) + " "
if(includeBuildingProperties):
psets = ios.util.element.get_psets(b)
for name, properties in psets.items():
output = print_properties(properties, output)
output += ". \n\n"
return output
def writeStoreys(model,f):
output = ""
for b in model.by_type("IfcBuildingStorey"):
output += "inst:storey_"+str(b.id()) + "\n"
output += "\ta bot:Storey ;" + "\n"
if(b.Name):
output += "\trdfs:label \""+b.Name+"\"^^xsd:string ;" + "\n"
if(b.Description):
output += "\trdfs:comment \""+b.Description+"\"^^xsd:string ;" + "\n"
output += "\tbot:hasGuid \""+ ios.guid.expand(b.GlobalId) +"\"^^xsd:string ;" + "\n"
output += "\tprops:hasCompressedGuid \""+ b.GlobalId +"\"^^xsd:string "
for reldec in b.IsDecomposedBy:
if reldec is not None:
for st in reldec.RelatedObjects:
output += ";\n"
output += "\tbot:hasSpace inst:space_"+ str(st.id()) + " "
for relcontains in b.ContainsElements:
if relcontains is not None:
for st in relcontains.RelatedElements:
output += ";\n"
output += "\tbot:containsElement inst:element_"+ str(st.id()) + " "
if(includeBuildingProperties):
psets = ios.util.element.get_psets(b)
for name, properties in psets.items():
output = print_properties(properties, output)
output += ". \n\n"
return output
def writeSpaces(model,f):
output = ""
for b in model.by_type("IfcSpace"):
output += "inst:space_"+str(b.id()) + "\n"
output += "\ta bot:Space ;" + "\n"
if(b.Name):
output += "\trdfs:label \""+b.Name+"\"^^xsd:string ;" + "\n"
if(b.Description):
output += "\trdfs:comment \""+b.Description+"\"^^xsd:string ;" + "\n"
output += "\tbot:hasGuid \""+ ios.guid.expand(b.GlobalId) +"\"^^xsd:string ;" + "\n"
output += "\tprops:hasCompressedGuid \""+ b.GlobalId +"\"^^xsd:string "
for relbounded in b.BoundedBy:
if relbounded is not None:
st = relbounded.RelatedBuildingElement
output += ";\n"
output += "\tbot:adjacentElement inst:element_"+ str(st.id()) + " "
for relcontains in b.ContainsElements:
if relcontains is not None:
counter = 0
for st in relcontains.RelatedElements:
if counter == 0:
output += ";\n"
output += "\tbot:containsElement inst:element_"+ str(st.id()) + " "
counter+=1
else:
output += ", inst:element_"+ str(st.id()) + " "
counter+=1
if(includeBuildingProperties):
psets = ios.util.element.get_psets(b)
for name, properties in psets.items():
output = print_properties(properties, output)
#if(includeQuantities):
# qsets = ios.util.element.get_qsets(b)
# for name, quantities in qsets.items():
# output = print_quantities(quantities, output)
output += ". \n\n"
return output
def writeZones(model,f):
output = ""
for z in model.by_type("ifcZone"):
output += "inst:space_" + str(z.id()) + "\n"
output += "\ta bot:Zone ;" + "\n"
if(z.Name):
output += "\trdfs:label \""+z.Name+"\"^^xsd:string ;" + "\n"
if(z.Description):
output += "\trdfs:comment \""+z.Description+"\"^^xsd:string ;" + "\n"
output += "\tprops:hasGuid \""+ ios.guid.expand(z.GlobalId) +"\"^^xsd:string ;" + "\n"
output += "\tprops:hasCompressedGuid \""+ z.GlobalId +"\"^^xsd:string "
for reldec in z.IsDecomposedBy:
if reldec is not None:
for sp in reldec.RelatedObjects:
output += ";\n"
output += "\tbot:hasSpace inst:space_"+ str(sp.id()) + " "
if(includeBuildingProperties):
psets = ios.util.element.get_psets(z)
for name, properties in psets.items():
output = print_properties(properties, output)
output += ". \n\n"
return output
def writeElements(model,f):
output = ""
for b in model.by_type("IfcElement"):
output += "inst:element_"+str(b.id()) + "\n"
output += "\ta bot:Element ;" + "\n"
if(b.Name):
output += "\trdfs:label \""+b.Name+"\"^^xsd:string ;" + "\n"
if(b.Description):
output += "\trdfs:comment \""+b.Description+"\"^^xsd:string ;" + "\n"
output += "\tbot:hasGuid \""+ ios.guid.expand(b.GlobalId) +"\"^^xsd:string ;" + "\n"
output += "\tprops:hasCompressedGuid \""+ b.GlobalId +"\"^^xsd:string "
for relvoids in b.HasOpenings:
if relvoids is not None:
st = relvoids.RelatedOpeningElement
for relfills in st.HasFillings:
if relfills is not None:
filler = relfills.RelatedBuildingElement
output += ";\n"
output += "\tbot:hostsElement inst:element_"+ str(filler.id()) + " "
for relvoids in b.HasOpenings:
if relvoids is not None:
st = relvoids.RelatedOpeningElement
for relfills in st.HasFillings:
if relfills is not None:
filler = relfills.RelatedBuildingElement
output += ";\n"
output += "\tbot:hostsElement inst:element_"+ str(filler.id()) + " "
if(includeBuildingProperties):
psets = ios.util.element.get_psets(b)
for name, properties in psets.items():
output = print_properties(properties, output)
output += ". \n\n"
return output
def writeInterfaces(model,f):
output = ""
for b in model.by_type("IfcRelSpaceBoundary"):
output += "inst:interface_"+str(b.id()) + "\n"
output += "\ta bot:Interface ;" + "\n"
if(b.Name):
output += "\trdfs:label \""+b.Name+"\"^^xsd:string ;" + "\n"
if(b.Description):
output += "\trdfs:comment \""+b.Description+"\"^^xsd:string ;" + "\n"
output += "\tbot:hasGuid \""+ ios.guid.expand(b.GlobalId) +"\"^^xsd:string ;" + "\n"
output += "\tprops:hasCompressedGuid \""+ b.GlobalId +"\"^^xsd:string "
sp = b.RelatingSpace
el = b.RelatedBuildingElement
if sp is not None:
output += ";\n"
output += "\tbot:interfaceOf inst:space_"+ str(sp.id()) + " "
if el is not None:
output += ";\n"
output += "\tbot:interfaceOf inst:element_"+ str(el.id()) + " "
output += ". \n\n"
return output
if __name__ == '__main__':
folder = r'./Sample/'
fname = "Case600-0209.ifc"
ifpath = os.path.abspath(folder+fname)
ofpath = os.path.abspath(folder+(fname[:-4])+".ttl")
convertIFCSPFtoTTL(ifpath, ofpath)