/
exportIFC.py
2272 lines (2066 loc) · 94.3 KB
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exportIFC.py
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# ***************************************************************************
# * Copyright (c) 2014 Yorik van Havre <yorik@uncreated.net> *
# * *
# * This program is free software; you can redistribute it and/or modify *
# * it under the terms of the GNU Lesser General Public License (LGPL) *
# * as published by the Free Software Foundation; either version 2 of *
# * the License, or (at your option) any later version. *
# * for detail see the LICENCE text file. *
# * *
# * This program is distributed in the hope that it will be useful, *
# * but WITHOUT ANY WARRANTY; without even the implied warranty of *
# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
# * GNU Library General Public License for more details. *
# * *
# * You should have received a copy of the GNU Library General Public *
# * License along with this program; if not, write to the Free Software *
# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
# * USA *
# * *
# ***************************************************************************
from __future__ import print_function
__title__ = "FreeCAD IFC export"
__author__ = "Yorik van Havre","Jonathan Wiedemann","Bernd Hahnebach"
__url__ = "https://www.freecadweb.org"
import six
import os
import time
import tempfile
import math
import FreeCAD
import Part
import Draft
import Arch
import DraftVecUtils
import ArchIFCSchema
import exportIFCHelper
from DraftGeomUtils import vec
from importIFCHelper import dd2dms
from importIFCHelper import decode
## @package exportIFC
# \ingroup ARCH
# \brief IFC file format exporter
#
# This module provides tools to export IFC files.
if open.__module__ in ['__builtin__','io']:
pyopen = open
# pyopen is used in exporter to open a file in Arch
# ************************************************************************************************
# ********** templates and other definitions ****
# specific FreeCAD <-> IFC slang translations
translationtable = {
"Foundation":"Footing",
"Floor":"BuildingStorey",
"Rebar":"ReinforcingBar",
"HydroEquipment":"SanitaryTerminal",
"ElectricEquipment":"ElectricAppliance",
"Furniture":"FurnishingElement",
"Stair Flight":"StairFlight",
"Curtain Wall":"CurtainWall",
"Pipe Segment":"PipeSegment",
"Pipe Fitting":"PipeFitting",
"VisGroup":"Group",
"Undefined":"BuildingElementProxy",
}
# the base IFC template for export
ifctemplate = """ISO-10303-21;
HEADER;
FILE_DESCRIPTION(('ViewDefinition [CoordinationView]'),'2;1');
FILE_NAME('$filename','$timestamp',('$owner','$email'),('$company'),'IfcOpenShell','IfcOpenShell','');
FILE_SCHEMA(('$ifcschema'));
ENDSEC;
DATA;
#1=IFCPERSON($,$,'$owner',$,$,$,$,$);
#2=IFCORGANIZATION($,'$company',$,$,$);
#3=IFCPERSONANDORGANIZATION(#1,#2,$);
#4=IFCAPPLICATION(#2,'$version','FreeCAD','118df2cf_ed21_438e_a41');
#5=IFCOWNERHISTORY(#3,#4,$,.ADDED.,$now,#3,#4,$now);
#6=IFCDIRECTION((1.,0.,0.));
#7=IFCDIRECTION((0.,0.,1.));
#8=IFCCARTESIANPOINT((0.,0.,0.));
#9=IFCAXIS2PLACEMENT3D(#8,#7,#6);
#10=IFCDIRECTION((0.,1.,0.));
#12=IFCDIMENSIONALEXPONENTS(0,0,0,0,0,0,0);
#13=IFCSIUNIT(*,.LENGTHUNIT.,$,.METRE.);
#14=IFCSIUNIT(*,.AREAUNIT.,$,.SQUARE_METRE.);
#15=IFCSIUNIT(*,.VOLUMEUNIT.,$,.CUBIC_METRE.);
#16=IFCSIUNIT(*,.PLANEANGLEUNIT.,$,.RADIAN.);
#17=IFCMEASUREWITHUNIT(IFCPLANEANGLEMEASURE(0.017453292519943295),#16);
#18=IFCCONVERSIONBASEDUNIT(#12,.PLANEANGLEUNIT.,'DEGREE',#17);
ENDSEC;
END-ISO-10303-21;
"""
# ************************************************************************************************
# ********** get the prefs, available in import and export ****************
def getPreferences():
"""retrieves IFC preferences"""
p = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Arch")
if FreeCAD.GuiUp and p.GetBool("ifcShowDialog",False):
import FreeCADGui
FreeCADGui.showPreferences("Import-Export",1)
ifcunit = p.GetInt("ifcUnit",0)
f = 0.001
u = "metre"
if ifcunit == 1:
f = 0.00328084
u = "foot"
#if ifcunit == "inch":
# f = 0.03937008
# not yet implemented, and I don't even know if it is interesting to do it.
# the only real use of these units is to make revit choose which mode to work with
preferences = {
'DEBUG': p.GetBool("ifcDebug",False),
'CREATE_CLONES': p.GetBool("ifcCreateClones",True),
'FORCE_BREP': p.GetBool("ifcExportAsBrep",False),
'STORE_UID': p.GetBool("ifcStoreUid",True),
'SERIALIZE': p.GetBool("ifcSerialize",False),
'EXPORT_2D': p.GetBool("ifcExport2D",True),
'FULL_PARAMETRIC': p.GetBool("IfcExportFreeCADProperties",False),
'ADD_DEFAULT_SITE': p.GetBool("IfcAddDefaultSite",False),
'ADD_DEFAULT_STOREY': p.GetBool("IfcAddDefaultStorey",False),
'ADD_DEFAULT_BUILDING': p.GetBool("IfcAddDefaultBuilding",True),
'IFC_UNIT': u,
'SCALE_FACTOR': f,
'GET_STANDARD': p.GetBool("getStandardType",False)
}
if hasattr(ifcopenshell,"schema_identifier"):
schema = ifcopenshell.schema_identifier
elif hasattr(ifcopenshell,"version") and (float(ifcopenshell.version[:3]) >= 0.6):
# v0.6 onwards allows to set our own schema
schema = ["IFC4", "IFC2X3"][FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Arch").GetInt("IfcVersion",0)]
else:
schema = "IFC2X3"
preferences["SCHEMA"] = schema
return preferences
# ************************************************************************************************
# ********** export IFC ****************
def export(exportList,filename,colors=None,preferences=None):
"""export(exportList,filename,colors=None,preferences=None) -- exports FreeCAD contents to an IFC file.
colors is an optional dictionary of objName:shapeColorTuple or objName:diffuseColorList elements
to be used in non-GUI mode if you want to be able to export colors."""
try:
global ifcopenshell
import ifcopenshell
except:
FreeCAD.Console.PrintError("IfcOpenShell was not found on this system. IFC support is disabled\n")
FreeCAD.Console.PrintMessage("Visit https://www.freecadweb.org/wiki/Arch_IFC to learn how to install it\n")
return
if preferences is None:
preferences = getPreferences()
# process template
version = FreeCAD.Version()
owner = FreeCAD.ActiveDocument.CreatedBy
email = ''
if ("@" in owner) and ("<" in owner):
s = owner.split("<")
owner = s[0].strip()
email = s[1].strip(">")
global template
template = ifctemplate.replace("$version",version[0]+"."+version[1]+" build "+version[2])
if preferences['DEBUG']: print("Exporting an",preferences['SCHEMA'],"file...")
template = template.replace("$ifcschema",preferences['SCHEMA'])
template = template.replace("$owner",owner)
template = template.replace("$company",FreeCAD.ActiveDocument.Company)
template = template.replace("$email",email)
template = template.replace("$now",str(int(time.time())))
template = template.replace("$filename",os.path.basename(filename))
template = template.replace("$timestamp",str(time.strftime("%Y-%m-%dT%H:%M:%S", time.gmtime())))
if hasattr(ifcopenshell,"version"):
template = template.replace("IfcOpenShell","IfcOpenShell "+ifcopenshell.version)
templatefilehandle,templatefile = tempfile.mkstemp(suffix=".ifc")
of = pyopen(templatefile,"w")
if six.PY2:
template = template.encode("utf8")
of.write(template)
of.close()
os.close(templatefilehandle)
# create IFC file
global ifcfile, surfstyles, clones, sharedobjects, profiledefs, shapedefs
ifcfile = ifcopenshell.open(templatefile)
ifcfile = exportIFCHelper.writeUnits(ifcfile,preferences["IFC_UNIT"])
history = ifcfile.by_type("IfcOwnerHistory")[0]
objectslist = Draft.getGroupContents(exportList,walls=True,addgroups=True)
annotations = []
for obj in objectslist:
if obj.isDerivedFrom("Part::Part2DObject"):
annotations.append(obj)
elif obj.isDerivedFrom("App::Annotation") or (Draft.getType(obj) == "DraftText"):
annotations.append(obj)
elif obj.isDerivedFrom("Part::Feature"):
if obj.Shape:
if obj.Shape.Edges and (not obj.Shape.Faces):
annotations.append(obj)
# clean objects list of unwanted types
objectslist = [obj for obj in objectslist if obj not in annotations]
objectslist = Arch.pruneIncluded(objectslist,strict=True)
objectslist = [obj for obj in objectslist if Draft.getType(obj) not in ["Dimension","Material","MaterialContainer","WorkingPlaneProxy"]]
if preferences['FULL_PARAMETRIC']:
objectslist = Arch.getAllChildren(objectslist)
# create project and context
contextCreator = exportIFCHelper.ContextCreator(ifcfile, objectslist)
context = contextCreator.model_view_subcontext
project = contextCreator.project
objectslist = [obj for obj in objectslist if obj != contextCreator.project_object]
if Draft.getObjectsOfType(objectslist, "Site"): # we assume one site and one representation context only
decl = Draft.getObjectsOfType(objectslist, "Site")[0].Declination.getValueAs(FreeCAD.Units.Radian)
contextCreator.model_context.TrueNorth.DirectionRatios = (math.cos(decl+math.pi/2), math.sin(decl+math.pi/2))
# define holders for the different types we create
products = {} # { Name: IfcEntity, ... }
subproducts = {} # { Name: IfcEntity, ... } for storing additions/subtractions and other types of subcomponents of a product
surfstyles = {} # { (r,g,b): IfcEntity, ... }
clones = {} # { Basename:[Clonename1,Clonename2,...] }
sharedobjects = {} # { BaseName: IfcRepresentationMap }
count = 1
groups = {} # { Host: [Child,Child,...] }
profiledefs = {} # { ProfileDefString:profiledef,...}
shapedefs = {} # { ShapeDefString:[shapes],... }
spatialelements = {} # {Name:IfcEntity, ... }
# reusable entity system
global ifcbin
ifcbin = exportIFCHelper.recycler(ifcfile)
# build clones table
if preferences['CREATE_CLONES']:
for o in objectslist:
b = Draft.getCloneBase(o,strict=True)
if b:
clones.setdefault(b.Name,[]).append(o.Name)
#print("clones table: ",clones)
#print(objectslist)
# testing if more than one site selected (forbidden in IFC)
# TODO: Moult: This is not forbidden in IFC.
if len(Draft.getObjectsOfType(objectslist,"Site")) > 1:
FreeCAD.Console.PrintError("More than one site is selected, which is forbidden by IFC standards. Please export only one site by IFC file.\n")
return
# products
for obj in objectslist:
# getting generic data
name = getText("Name",obj)
description = getText("Description",obj)
uid = getUID(obj,preferences)
ifctype = getIfcTypeFromObj(obj)
if ifctype == "IfcGroup":
groups[obj.Name] = [o.Name for o in obj.Group]
continue
# handle assemblies (arrays, app::parts, references, etc...)
assemblyElements = []
if ifctype == "IfcArray":
if obj.ArrayType == "ortho":
clonedeltas = []
for i in range(obj.NumberX):
clonedeltas.append(obj.Placement.Base+(i*obj.IntervalX))
for j in range(obj.NumberY):
if j > 0:
clonedeltas.append(obj.Placement.Base+(i*obj.IntervalX)+(j*obj.IntervalY))
for k in range(obj.NumberZ):
if k > 0:
clonedeltas.append(obj.Placement.Base+(i*obj.IntervalX)+(j*obj.IntervalY)+(k*obj.IntervalZ))
#print("clonedeltas:",clonedeltas)
for delta in clonedeltas:
representation,placement,shapetype = getRepresentation(
ifcfile,
context,
obj.Base,
forcebrep=(getBrepFlag(obj.Base,preferences)),
colors=colors,
preferences=preferences,
forceclone=delta
)
subproduct = createProduct(
ifcfile,
obj.Base,
getIfcTypeFromObj(obj.Base),
getUID(obj.Base,preferences),
history,
getText("Name",obj.Base),
getText("Description",obj.Base),
placement,
representation,
preferences)
assemblyElements.append(subproduct)
ifctype = "IfcElementAssembly"
elif ifctype == "IfcApp::Part":
for subobj in [FreeCAD.ActiveDocument.getObject(n[:-1]) for n in obj.getSubObjects()]:
representation,placement,shapetype = getRepresentation(
ifcfile,
context,
subobj,
forcebrep=(getBrepFlag(subobj,preferences)),
colors=colors,
preferences=preferences
)
subproduct = createProduct(
ifcfile,
subobj,
getIfcTypeFromObj(subobj),
getUID(subobj,preferences),
history,
getText("Name",subobj),
getText("Description",subobj),
placement,
representation,
preferences)
assemblyElements.append(subproduct)
ifctype = "IfcElementAssembly"
# export grids
if ifctype in ["IfcAxis","IfcAxisSystem","IfcGrid"]:
ifcaxes = []
ifcpols = []
if ifctype == "IfcAxis":
# make sure this axis is not included in something else already
standalone = True
for p in obj.InList:
if hasattr(p,"Axes") and (obj in p.Axes):
if p in objectslist:
axgroups = []
standalone = False
break
if standalone:
axgroups = [obj.Proxy.getAxisData(obj)]
else:
axgroups = obj.Proxy.getAxisData(obj)
if not axgroups:
continue
ifctype = "IfcGrid"
for axg in axgroups:
ifcaxg = []
for ax in axg:
p1 = ifcbin.createIfcCartesianPoint(tuple(FreeCAD.Vector(ax[0]).multiply(preferences['SCALE_FACTOR'])[:2]))
p2 = ifcbin.createIfcCartesianPoint(tuple(FreeCAD.Vector(ax[1]).multiply(preferences['SCALE_FACTOR'])[:2]))
pol = ifcbin.createIfcPolyline([p1,p2])
ifcpols.append(pol)
axis = ifcfile.createIfcGridAxis(ax[2],pol,True)
ifcaxg.append(axis)
if len(ifcaxes) < 3:
ifcaxes.append(ifcaxg)
else:
ifcaxes[2] = ifcaxes[2]+ifcaxg # IfcGrid can have max 3 axes systems
u = None
v = None
w = None
if ifcaxes:
u = ifcaxes[0]
if len(ifcaxes) > 1:
v = ifcaxes[1]
if len(ifcaxes) > 2:
w = ifcaxes[2]
if u and v:
if preferences['DEBUG']: print(str(count).ljust(3)," : ", ifctype, " (",str(len(ifcpols)),"axes ) : ",name)
xvc = ifcbin.createIfcDirection((1.0,0.0,0.0))
zvc = ifcbin.createIfcDirection((0.0,0.0,1.0))
ovc = ifcbin.createIfcCartesianPoint((0.0,0.0,0.0))
gpl = ifcbin.createIfcAxis2Placement3D(ovc,zvc,xvc)
plac = ifcbin.createIfcLocalPlacement(gpl)
cset = ifcfile.createIfcGeometricCurveSet(ifcpols)
#subc = ifcfile.createIfcGeometricRepresentationSubContext('FootPrint','Model',context,None,"MODEL_VIEW",None,None,None,None,None)
srep = ifcfile.createIfcShapeRepresentation(context,'FootPrint',"GeometricCurveSet",ifcpols)
pdef = ifcfile.createIfcProductDefinitionShape(None,None,[srep])
grid = ifcfile.createIfcGrid(uid,history,name,description,None,plac,pdef,u,v,w)
products[obj.Name] = grid
count += 1
continue
if ifctype not in ArchIFCSchema.IfcProducts.keys():
ifctype = "IfcBuildingElementProxy"
# getting the representation
representation,placement,shapetype = getRepresentation(
ifcfile,
context,
obj,
forcebrep=(getBrepFlag(obj,preferences)),
colors=colors,
preferences=preferences
)
if preferences['GET_STANDARD']:
if isStandardCase(obj,ifctype):
ifctype += "StandardCase"
if preferences['DEBUG']:
print(str(count).ljust(3)," : ", ifctype, " (",shapetype,") : ",name)
# creating the product
product = createProduct(
ifcfile,
obj,
ifctype,
uid,
history,
name,
description,
placement,
representation,
preferences)
products[obj.Name] = product
if ifctype in ["IfcBuilding","IfcBuildingStorey","IfcSite","IfcSpace"]:
spatialelements[obj.Name] = product
# gather assembly subelements
if assemblyElements:
ifcfile.createIfcRelAggregates(
ifcopenshell.guid.new(),
history,
'Assembly',
'',
products[obj.Name],
assemblyElements
)
if preferences['DEBUG']: print(" aggregating",len(assemblyElements),"object(s)")
# additions
if hasattr(obj,"Additions") and (shapetype in ["extrusion","no shape"]):
for o in obj.Additions:
r2,p2,c2 = getRepresentation(ifcfile,context,o,colors=colors,preferences=preferences)
if preferences['DEBUG']: print(" adding ",c2," : ",o.Label)
l = o.Label
if six.PY2:
l = l.encode("utf8")
prod2 = ifcfile.createIfcBuildingElementProxy(
ifcopenshell.guid.new(),
history,
l,
None,
None,
p2,
r2,
None,
"ELEMENT"
)
subproducts[o.Name] = prod2
ifcfile.createIfcRelAggregates(
ifcopenshell.guid.new(),
history,
'Addition',
'',
product,
[prod2]
)
# subtractions
guests = []
for o in obj.InList:
if hasattr(o,"Hosts"):
for co in o.Hosts:
if co == obj:
if o not in guests:
guests.append(o)
if hasattr(obj,"Subtractions") and (shapetype in ["extrusion","no shape"]):
for o in obj.Subtractions + guests:
r2,p2,c2 = getRepresentation(ifcfile,context,o,subtraction=True,colors=colors,preferences=preferences)
if preferences['DEBUG']: print(" subtracting ",c2," : ",o.Label)
l = o.Label
if six.PY2:
l = l.encode("utf8")
prod2 = ifcfile.createIfcOpeningElement(
ifcopenshell.guid.new(),
history,
l,
None,
None,
p2,
r2,
None
)
subproducts[o.Name] = prod2
ifcfile.createIfcRelVoidsElement(
ifcopenshell.guid.new(),
history,
'Subtraction',
'',
product,
prod2
)
# properties
ifcprop = False
if hasattr(obj,"IfcProperties"):
if obj.IfcProperties:
ifcprop = True
if isinstance(obj.IfcProperties,dict):
# IfcProperties is a dictionary (FreeCAD 0.18)
psets = {}
for key,value in obj.IfcProperties.items():
pset, pname, ptype, pvalue = getPropertyData(key,value,preferences)
if pvalue is None:
if preferences['DEBUG']: print(" property ", pname," ignored because no value found.")
continue
p = ifcbin.createIfcPropertySingleValue(str(pname),str(ptype),pvalue)
psets.setdefault(pset,[]).append(p)
for pname,props in psets.items():
pset = ifcfile.createIfcPropertySet(
ifcopenshell.guid.new(),
history,
pname,
None,
props
)
ifcfile.createIfcRelDefinesByProperties(
ifcopenshell.guid.new(),
history,
None,
None,
[product],
pset
)
elif obj.IfcProperties.TypeId == 'Spreadsheet::Sheet':
# IfcProperties is a spreadsheet (deprecated)
sheet = obj.IfcProperties
propertiesDic = {}
categories = []
n = 2
cell = True
while cell is True:
if hasattr(sheet,'A'+str(n)):
cat = sheet.get('A'+str(n))
key = sheet.get('B'+str(n))
tp = sheet.get('C'+str(n))
if hasattr(sheet,'D'+str(n)):
val = sheet.get('D'+str(n))
else:
val = ''
if six.PY2 and isinstance(key, six.text_type):
key = key.encode("utf8")
else:
key = str(key)
if six.PY2 and isinstance(tp, six.text_type):
tp = tp.encode("utf8")
else:
tp = str(tp)
#tp = tp.encode("utf8")
if tp in ["IfcLabel","IfcText","IfcIdentifier",'IfcDescriptiveMeasure']:
val = val.encode("utf8")
elif tp == "IfcBoolean":
if val == 'True':
val = True
else:
val = False
elif tp == "IfcInteger":
val = int(val)
else:
val = float(val)
unit = None
#unit = sheet.get('E'+str(n))
if cat in categories:
propertiesDic[cat].append({"key":key,"tp":tp,"val":val,"unit":unit})
else:
propertiesDic[cat] = [{"key":key,"tp":tp,"val":val,"unit":unit}]
categories.append(cat)
n += 1
else:
cell = False
for cat in propertiesDic:
props = []
for prop in propertiesDic[cat]:
if preferences['DEBUG']:
print("key",prop["key"],type(prop["key"]))
print("tp",prop["tp"],type(prop["tp"]))
print("val",prop["val"],type(prop["val"]))
if tp.lower().startswith("ifc"):
props.append(ifcbin.createIfcPropertySingleValue(prop["key"],prop["tp"],prop["val"]))
else:
print("Unable to create a property of type:",tp)
if props:
pset = ifcfile.createIfcPropertySet(
ifcopenshell.guid.new(),
history,cat,
None,
props
)
ifcfile.createIfcRelDefinesByProperties(
ifcopenshell.guid.new(),
history,
None,
None,
[product],
pset
)
if hasattr(obj,"IfcData"):
if obj.IfcData:
ifcprop = True
#if preferences['DEBUG'] : print(" adding ifc attributes")
props = []
for key in obj.IfcData:
if not (key in ["attributes", "complex_attributes", "IfcUID", "FlagForceBrep"]):
# (deprecated) properties in IfcData dict are stored as "key":"type(value)"
r = obj.IfcData[key].strip(")").split("(")
if len(r) == 1:
tp = "IfcText"
val = r[0]
else:
tp = r[0]
val = "(".join(r[1:])
val = val.strip("'")
val = val.strip('"')
#if preferences['DEBUG']: print(" property ",key," : ",val.encode("utf8"), " (", str(tp), ")")
if tp in ["IfcLabel","IfcText","IfcIdentifier",'IfcDescriptiveMeasure']:
if six.PY2:
val = val.encode("utf8")
elif tp == "IfcBoolean":
if val == ".T.":
val = True
else:
val = False
elif tp == "IfcInteger":
val = int(val)
else:
val = float(val)
props.append(ifcbin.createIfcPropertySingleValue(str(key),str(tp),val))
if props:
pset = ifcfile.createIfcPropertySet(
ifcopenshell.guid.new(),
history,
'PropertySet',
None,
props
)
ifcfile.createIfcRelDefinesByProperties(
ifcopenshell.guid.new(),
history,
None,
None,
[product],
pset
)
if not ifcprop:
#if preferences['DEBUG'] : print("no ifc properties to export")
pass
# Quantities
if hasattr(obj,"IfcData"):
quantities = []
if ("ExportHeight" in obj.IfcData) and obj.IfcData["ExportHeight"] and hasattr(obj,"Height"):
quantities.append(ifcfile.createIfcQuantityLength('Height',None,None,obj.Height.Value*preferences['SCALE_FACTOR']))
if ("ExportWidth" in obj.IfcData) and obj.IfcData["ExportWidth"] and hasattr(obj,"Width"):
quantities.append(ifcfile.createIfcQuantityLength('Width',None,None,obj.Width.Value*preferences['SCALE_FACTOR']))
if ("ExportLength" in obj.IfcData) and obj.IfcData["ExportLength"] and hasattr(obj,"Length"):
quantities.append(ifcfile.createIfcQuantityLength('Length',None,None,obj.Length.Value*preferences['SCALE_FACTOR']))
if ("ExportHorizontalArea" in obj.IfcData) and obj.IfcData["ExportHorizontalArea"] and hasattr(obj,"HorizontalArea"):
quantities.append(ifcfile.createIfcQuantityArea('HorizontalArea',None,None,obj.HorizontalArea.Value*(preferences['SCALE_FACTOR']**2)))
if ("ExportVerticalArea" in obj.IfcData) and obj.IfcData["ExportVerticalArea"] and hasattr(obj,"VerticalArea"):
quantities.append(ifcfile.createIfcQuantityArea('VerticalArea',None,None,obj.VerticalArea.Value*(preferences['SCALE_FACTOR']**2)))
if ("ExportVolume" in obj.IfcData) and obj.IfcData["ExportVolume"] and obj.isDerivedFrom("Part::Feature"):
quantities.append(ifcfile.createIfcQuantityVolume('Volume',None,None,obj.Shape.Volume*(preferences['SCALE_FACTOR']**3)))
if quantities:
eltq = ifcfile.createIfcElementQuantity(
ifcopenshell.guid.new(),
history,
"ElementQuantities",
None,
"FreeCAD",quantities
)
ifcfile.createIfcRelDefinesByProperties(
ifcopenshell.guid.new(),
history,
None,
None,
[product],eltq
)
if preferences['FULL_PARAMETRIC']:
# exporting all the object properties
FreeCADProps = []
FreeCADGuiProps = []
FreeCADProps.append(ifcbin.createIfcPropertySingleValue("FreeCADType","IfcText",obj.TypeId))
FreeCADProps.append(ifcbin.createIfcPropertySingleValue("FreeCADName","IfcText",obj.Name))
sets = [("App",obj)]
if hasattr(obj,"Proxy"):
if obj.Proxy:
FreeCADProps.append(ifcbin.createIfcPropertySingleValue("FreeCADAppObject","IfcText",str(obj.Proxy.__class__)))
if FreeCAD.GuiUp:
if obj.ViewObject:
sets.append(("Gui",obj.ViewObject))
if hasattr(obj.ViewObject,"Proxy"):
if obj.ViewObject.Proxy:
FreeCADGuiProps.append(
ifcbin.createIfcPropertySingleValue(
"FreeCADGuiObject",
"IfcText",
str(obj.ViewObject.Proxy.__class__)
)
)
for realm,ctx in sets:
if ctx:
for prop in ctx.PropertiesList:
if not(prop in ["IfcProperties","IfcData","Shape","Proxy","ExpressionEngine","AngularDeflection","BoundingBox"]):
try:
ptype = ctx.getTypeIdOfProperty(prop)
except AttributeError:
ptype = "Unknown"
itype = None
ivalue = None
if ptype in ["App::PropertyString","App::PropertyEnumeration"]:
itype = "IfcText"
ivalue = getattr(ctx,prop)
elif ptype == "App::PropertyInteger":
itype = "IfcInteger"
ivalue = getattr(ctx,prop)
elif ptype == "App::PropertyFloat":
itype = "IfcReal"
ivalue = float(getattr(ctx,prop))
elif ptype == "App::PropertyBool":
itype = "IfcBoolean"
ivalue = getattr(ctx,prop)
elif ptype in ["App::PropertyVector","App::PropertyPlacement"]:
itype = "IfcText"
ivalue = str(getattr(ctx,prop))
elif ptype in ["App::PropertyLength","App::PropertyDistance"]:
itype = "IfcReal"
ivalue = float(getattr(ctx,prop).getValueAs("m"))
elif ptype == "App::PropertyArea":
itype = "IfcReal"
ivalue = float(getattr(ctx,prop).getValueAs("m^2"))
elif ptype == "App::PropertyLink":
t = getattr(ctx,prop)
if t:
itype = "IfcText"
ivalue = "FreeCADLink_" + t.Name
else:
if preferences['DEBUG']: print("Unable to encode property ",prop," of type ",ptype)
if itype:
# TODO add description
if realm == "Gui":
FreeCADGuiProps.append(ifcbin.createIfcPropertySingleValue("FreeCADGui_"+prop,itype,ivalue))
else:
FreeCADProps.append(ifcbin.createIfcPropertySingleValue("FreeCAD_"+prop,itype,ivalue))
if FreeCADProps:
pset = ifcfile.createIfcPropertySet(
ifcopenshell.guid.new(),
history,'FreeCADPropertySet',
None,
FreeCADProps
)
ifcfile.createIfcRelDefinesByProperties(
ifcopenshell.guid.new(),
history,
None,
None,
[product],
pset
)
if FreeCADGuiProps:
pset = ifcfile.createIfcPropertySet(
ifcopenshell.guid.new(),
history,
'FreeCADGuiPropertySet',
None,
FreeCADGuiProps
)
ifcfile.createIfcRelDefinesByProperties(
ifcopenshell.guid.new(),
history,
None,
None,
[product],
pset
)
count += 1
# relationships
sites = []
buildings = []
floors = []
treated = []
defaulthost = []
# buildingParts can be exported as any "normal" IFC type. In that case, gather their elements first
# if ifc type is "Undefined" gather elements too
for bp in Draft.getObjectsOfType(objectslist,"BuildingPart"):
if bp.IfcType not in ["Site","Building","Building Storey","Space"]:
if bp.Name in products:
subs = []
for c in bp.Group:
if c.Name in products:
subs.append(products[c.Name])
treated.append(c.Name)
if subs:
ifcfile.createIfcRelAggregates(
ifcopenshell.guid.new(),
history,
'Assembly',
'',
products[bp.Name],
subs
)
# storeys
for floor in Draft.getObjectsOfType(objectslist,"Floor")+Draft.getObjectsOfType(objectslist,"BuildingPart"):
if (Draft.getType(floor) == "Floor") or (hasattr(floor,"IfcType") and floor.IfcType == "Building Storey"):
objs = Draft.getGroupContents(floor,walls=True,addgroups=True)
objs = Arch.pruneIncluded(objs)
objs.remove(floor) # getGroupContents + addgroups will include the floor itself
buildingelements, spaces = [], []
for c in objs:
if c.Name in products and c.Name not in treated:
prod = products[c.Name]
if prod.is_a()=='IfcSpace':
spaces.append(prod)
else:
buildingelements.append(prod)
treated.append(c.Name)
f = products[floor.Name]
if buildingelements:
ifcfile.createIfcRelContainedInSpatialStructure(
ifcopenshell.guid.new(),
history,
'StoreyLink',
'',
buildingelements,
f
)
if spaces:
ifcfile.createIfcRelAggregates(
ifcopenshell.guid.new(),
history,
'StoreyLink',
'',
f,
spaces
)
floors.append(f)
defaulthost = f
# buildings
for building in Draft.getObjectsOfType(objectslist,"Building")+Draft.getObjectsOfType(objectslist,"BuildingPart"):
if (Draft.getType(building) == "Building") or (hasattr(building,"IfcType") and building.IfcType == "Building"):
objs = Draft.getGroupContents(building,walls=True,addgroups=True)
objs = Arch.pruneIncluded(objs)
children = []
childfloors = []
for c in objs:
if not (c.Name in treated):
if c.Name != building.Name: # getGroupContents + addgroups will include the building itself
if c.Name in products.keys():
if Draft.getType(c) in ["Floor","BuildingPart","Space"]:
childfloors.append(products[c.Name])
treated.append(c.Name)
elif not (c.Name in treated):
children.append(products[c.Name])
treated.append(c.Name)
b = products[building.Name]
if children:
ifcfile.createIfcRelContainedInSpatialStructure(
ifcopenshell.guid.new(),
history,
'BuildingLink',
'',
children,
b
)
if childfloors:
ifcfile.createIfcRelAggregates(
ifcopenshell.guid.new(),
history,
'BuildingLink',
'',
b,
childfloors
)
buildings.append(b)
if not defaulthost and not preferences['ADD_DEFAULT_STOREY']:
defaulthost = b
# sites
for site in exportIFCHelper.getObjectsOfIfcType(objectslist, "Site"):
objs = Draft.getGroupContents(site,walls=True,addgroups=True)
objs = Arch.pruneIncluded(objs)
children = []
childbuildings = []
for c in objs:
if c.Name != site.Name: # getGroupContents + addgroups will include the building itself
if c.Name in products.keys():
if not (c.Name in treated):
if Draft.getType(c) == "Building":
childbuildings.append(products[c.Name])
treated.append(c.Name)
sites.append(products[site.Name])
# add default site, building and storey as required
if not sites:
if preferences['ADD_DEFAULT_SITE']:
if preferences['DEBUG']: print("No site found. Adding default site")
sites = [ifcfile.createIfcSite(
ifcopenshell.guid.new(),
history,"Default Site",
'',
None,
None,
None,
None,
"ELEMENT",
None,
None,
None,
None,
None
)]
if sites:
ifcfile.createIfcRelAggregates(
ifcopenshell.guid.new(),
history,
'ProjectLink',
'',
project,sites
)
if not buildings:
if preferences['ADD_DEFAULT_BUILDING']:
if preferences['DEBUG']: print("No building found. Adding default building")
buildings = [ifcfile.createIfcBuilding(
ifcopenshell.guid.new(),
history,
"Default Building",
'',
None,
None,
None,
None,