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create/src/Mod/Arch/importIFClegacy.py
Roy-043 544bd1e7ea Arch: implement new get_param functions 
Additionally 2 Arch_Window bugs were fixed:
* If the W1 value was changed the box tracker was not repositioned relative to the cursor.
* The WindowColor was not applied because of a typo in the code. De current default color is quite dark BTW.

Note that all dimensional values that were not really defaults, but just the last entered values, have been removed from preferences-archdefaults.ui. As a result the layout looks a bit strange. That will be improved in a next PR.
2024-01-18 15:43:15 +01:00

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#***************************************************************************
#* Copyright (c) 2011 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 *
#* *
#***************************************************************************
# WARNING ##################################################################
# #
# This module is deprecated and will be removed in a future version #
# #
############################################################################
import FreeCAD, Arch, Draft, os, sys, time, Part, DraftVecUtils, uuid, math, re
from draftutils import params
from draftutils.translate import translate
__title__="FreeCAD IFC importer"
__author__ = "Yorik van Havre"
__url__ = "https://www.freecad.org"
# config
subtractiveTypes = ["IfcOpeningElement"] # elements that must be subtracted from their parents
SCHEMA = "http://www.steptools.com/support/stdev_docs/ifcbim/ifc4.exp" # only for internal parser
MAKETEMPFILES = False # if True, shapes are passed from ifcopenshell to freecad through temp files
DEBUG = True # this is only for the python console, this value is overridden when importing through the GUI
SKIP = ["IfcBuildingElementProxy","IfcFlowTerminal","IfcFurnishingElement"] # default. overwritten by the GUI options
IFCLINE_RE = re.compile("#(\d+)[ ]?=[ ]?(.*?)\((.*)\);[\\r]?$")
APPLYFIX = True # if true, the ifcopenshell bug-fixing function is applied when saving files
# end config
# supported ifc products (export only):
supportedIfcTypes = ["IfcSite", "IfcBuilding", "IfcBuildingStorey", "IfcBeam", "IfcBeamStandardCase",
"IfcChimney", "IfcColumn", "IfcColumnStandardCase", "IfcCovering", "IfcCurtainWall",
"IfcDoor", "IfcDoorStandardCase", "IfcMember", "IfcMemberStandardCase", "IfcPlate",
"IfcPlateStandardCase", "IfcRailing", "IfcRamp", "IfcRampFlight", "IfcRoof",
"IfcSlab", "IfcStair", "IfcStairFlight", "IfcWall","IfcSpace",
"IfcWallStandardCase", "IfcWindow", "IfcWindowStandardCase", "IfcBuildingElementProxy",
"IfcPile", "IfcFooting", "IfcReinforcingBar", "IfcTendon"]
# TODO : shading device not supported?
if open.__module__ in ['__builtin__','io']:
pyopen = open # because we'll redefine open below
def open(filename,skip=None):
"called when freecad opens a file"
docname = os.path.splitext(os.path.basename(filename))[0]
doc = FreeCAD.newDocument(docname)
doc.Label = docname
FreeCAD.ActiveDocument = doc
getConfig()
read(filename,skip)
return doc
def insert(filename,docname,skip=None):
"called when freecad wants to import a file"
try:
doc = FreeCAD.getDocument(docname)
except NameError:
doc = FreeCAD.newDocument(docname)
FreeCAD.ActiveDocument = doc
getConfig()
read(filename,skip)
return doc
def getConfig():
"Gets Arch IFC import preferences"
global SKIP, CREATE_IFC_GROUPS, ASMESH, PREFIX_NUMBERS, FORCE_PYTHON_PARSER, SEPARATE_OPENINGS, SEPARATE_PLACEMENTS, JOINSOLIDS, AGGREGATE_WINDOWS
IMPORT_IFC_FURNITURE = False
ASMESH = ["IfcFurnishingElement"]
CREATE_IFC_GROUPS = params.get_param_arch("createIfcGroups")
FORCE_PYTHON_PARSER = params.get_param_arch("forceIfcPythonParser")
DEBUG = params.get_param_arch("ifcDebug")
SEPARATE_OPENINGS = params.get_param_arch("ifcSeparateOpenings")
SEPARATE_PLACEMENTS = params.get_param_arch("ifcSeparatePlacements")
PREFIX_NUMBERS = params.get_param_arch("ifcPrefixNumbers")
JOINSOLIDS = params.get_param_arch("ifcJoinSolids")
AGGREGATE_WINDOWS = params.get_param_arch("ifcAggregateWindows")
skiplist = params.get_param_arch("ifcSkip")
if skiplist:
SKIP = skiplist.split(",")
asmeshlist = params.get_param_arch("ifcAsMesh")
if asmeshlist:
ASMESH = asmeshlist.split(",")
def getIfcOpenShell():
"locates and imports ifcopenshell"
global IFCOPENSHELL5
global IfcImport
IFCOPENSHELL5 = False
try:
import IfcImport
except ImportError:
try:
import ifc_wrapper as IfcImport
except ImportError:
FreeCAD.Console.PrintMessage(translate("Arch","Couldn't locate IfcOpenShell")+"\n")
return False
else:
IFCOPENSHELL5 = True
return True
else:
if hasattr(IfcImport,"IfcFile"):
IFCOPENSHELL5 = True
return True
def read(filename,skip=None):
"Parses an IFC file"
# parsing the IFC file
t1 = time.time()
processedIds = []
skipIds = skip
if not skipIds:
skipIds = []
elif isinstance(skipIds,int):
skipIds = [skipIds]
if getIfcOpenShell() and not FORCE_PYTHON_PARSER:
# use the IfcOpenShell parser
# preparing IfcOpenShell
if DEBUG: global ifcObjects,ifcParents
ifcObjects = {} # a table to relate ifc id with freecad object
ifcParents = {} # a table to relate ifc id with parent id
if SEPARATE_OPENINGS:
if not IFCOPENSHELL5:
if hasattr(IfcImport,"DISABLE_OPENING_SUBTRACTIONS"):
IfcImport.Settings(IfcImport.DISABLE_OPENING_SUBTRACTIONS,True)
else:
SKIP.append("IfcOpeningElement")
useShapes = False
if IFCOPENSHELL5:
useShapes = True
if hasattr(IfcImport,"clean"):
IfcImport.clean()
elif hasattr(IfcImport,"USE_BREP_DATA"):
IfcImport.Settings(IfcImport.USE_BREP_DATA,True)
useShapes = True
else:
if DEBUG: print("Warning: IfcOpenShell version very old, unable to handle Brep data")
# opening file
if IFCOPENSHELL5:
global ifc
ifc = IfcImport.open(filename)
objects = ifc.by_type("IfcProduct")
num_lines = len(objects)
relations = ifc.by_type("IfcRelAggregates") + ifc.by_type("IfcRelContainedInSpatialStructure") + ifc.by_type("IfcRelVoidsElement")
if not objects:
print("Error opening IFC file")
return
else:
num_lines = sum(1 for line in pyopen(filename))
if not IfcImport.Init(filename):
print("Error opening IFC file")
return
# processing geometry
idx = 0
while True:
objparentid = []
if IFCOPENSHELL5:
obj = objects[idx]
idx += 1
objid = int(str(obj).split("=")[0].strip("#"))
objname = obj.get_argument(obj.get_argument_index("Name"))
objtype = str(obj).split("=")[1].split("(")[0]
for r in relations:
if r.is_a("IfcRelAggregates"):
for c in getAttr(r,"RelatedObjects"):
if str(obj) == str(c):
objparentid.append(int(str(getAttr(r,"RelatingObject")).split("=")[0].strip("#")))
elif r.is_a("IfcRelContainedInSpatialStructure"):
for c in getAttr(r,"RelatedElements"):
if str(obj) == str(c):
objparentid.append(int(str(getAttr(r,"RelatingStructure")).split("=")[0].strip("#")))
elif r.is_a("IfcRelVoidsElement"):
if str(obj) == str(getAttr(r,"RelatedOpeningElement")):
objparentid.append(int(str(getAttr(r,"RelatingBuildingElement")).split("=")[0].strip("#")))
else:
if hasattr(IfcImport, 'GetBrepData'):
obj = IfcImport.GetBrepData()
else:
obj = IfcImport.Get()
objid = obj.id
idx = objid
objname = obj.name
objtype = obj.type
objparentid.append(obj.parent_id)
if DEBUG: print("["+str(int((float(idx)/num_lines)*100))+"%] parsing ",objid,": ",objname," of type ",objtype)
# retrieving name
n = getCleanName(objname,objid,objtype)
# skip IDs
if objid in skipIds:
if DEBUG: print(" skipping because object ID is in skip list")
nobj = None
# skip types
elif objtype in SKIP:
if DEBUG: print(" skipping because type is in skip list")
nobj = None
# check if object was already processed, to workaround an ifcopenshell bug
elif objid in processedIds:
if DEBUG: print(" skipping because this object was already processed")
else:
# build shape
shape = None
if useShapes:
shape = getShape(obj,objid)
# walls
if objtype in ["IfcWallStandardCase","IfcWall"]:
nobj = makeWall(objid,shape,n)
# windows
elif objtype in ["IfcWindow","IfcDoor"]:
nobj = makeWindow(objid,shape,n)
# structs
elif objtype in ["IfcBeam","IfcColumn","IfcSlab","IfcFooting"]:
nobj = makeStructure(objid,shape,objtype,n)
# roofs
elif objtype in ["IfcRoof"]:
nobj = makeRoof(objid,shape,n)
# furniture
elif objtype in ["IfcFurnishingElement"]:
nobj = FreeCAD.ActiveDocument.addObject("Part::Feature",n)
nobj.Shape = shape
# sites
elif objtype in ["IfcSite"]:
nobj = makeSite(objid,shape,n)
# floors
elif objtype in ["IfcBuildingStorey"]:
nobj = Arch.makeFloor(name=n)
nobj.Label = n
# floors
elif objtype in ["IfcBuilding"]:
nobj = Arch.makeBuilding(name=n)
nobj.Label = n
# spaces
elif objtype in ["IfcSpace"]:
nobj = makeSpace(objid,shape,n)
elif shape:
# treat as dumb parts
if DEBUG: print("Fixme: Shape-containing object not handled: ",objid, " ", objtype)
nobj = FreeCAD.ActiveDocument.addObject("Part::Feature",n)
nobj.Label = n
nobj.Shape = shape
else:
# treat as meshes
if DEBUG: print("Warning: Object without shape: ",objid, " ", objtype)
if hasattr(obj,"mesh"):
if not hasattr(obj.mesh, 'verts'):
obj = IfcImport.Get() # Get triangulated rep of same product
me,pl = getMesh(obj)
nobj = FreeCAD.ActiveDocument.addObject("Mesh::Feature",n)
nobj.Label = n
nobj.Mesh = me
nobj.Placement = pl
else:
if DEBUG: print("Error: Skipping object without mesh: ",objid, " ", objtype)
# registering object number and parent
if objparentid:
ifcParents[objid] = []
for p in objparentid:
ifcParents[objid].append([p,not (objtype in subtractiveTypes)])
ifcObjects[objid] = nobj
processedIds.append(objid)
if IFCOPENSHELL5:
if idx >= len(objects):
break
else:
if not IfcImport.Next():
break
# processing non-geometry and relationships
parents_temp = dict(ifcParents)
import ArchCommands
#print(parents_temp)
while parents_temp:
id, comps = parents_temp.popitem()
for c in comps:
parent_id = c[0]
additive = c[1]
if (id <= 0) or (parent_id <= 0):
# root dummy object
parent = None
elif parent_id in ifcObjects:
parent = ifcObjects[parent_id]
# check if parent is a subtraction, if yes parent to grandparent
if parent_id in ifcParents:
for p in ifcParents[parent_id]:
if p[1] == False:
grandparent_id = p[0]
if grandparent_id in ifcObjects:
parent = ifcObjects[grandparent_id]
else:
# creating parent if needed
if IFCOPENSHELL5:
obj = ifc.by_id(parent_id)
parentid = int(str(obj).split("=")[0].strip("#"))
parentname = obj.get_argument(obj.get_argument_index("Name"))
parenttype = str(obj).split("=")[1].split("(")[0]
else:
obj = IfcImport.GetObject(parent_id)
parentid = obj.id
parentname = obj.name
parenttype = obj.type
#if DEBUG: print("["+str(int((float(idx)/num_lines)*100))+"%] parsing ",parentid,": ",parentname," of type ",parenttype)
n = getCleanName(parentname,parentid,parenttype)
if parentid <= 0:
parent = None
elif parenttype == "IfcBuildingStorey":
parent = Arch.makeFloor(name=n)
parent.Label = n
elif parenttype == "IfcBuilding":
parent = Arch.makeBuilding(name=n)
parent.Label = n
elif parenttype == "IfcSite":
parent = Arch.makeSite(name=n)
parent.Label = n
elif parenttype == "IfcWindow":
parent = Arch.makeWindow(name=n)
parent.Label = n
elif parenttype == "IfcProject":
parent = None
else:
if DEBUG: print("Fixme: skipping unhandled parent: ", parentid, " ", parenttype)
parent = None
# registering object number and parent
if not IFCOPENSHELL5:
if parent_ifcobj.parent_id > 0:
ifcParents[parentid] = [parent_ifcobj.parent_id,True]
parents_temp[parentid] = [parent_ifcobj.parent_id,True]
if parent and (not parentid in ifcObjects):
ifcObjects[parentid] = parent
# attributing parent
if parent and (id in ifcObjects):
if ifcObjects[id] and (ifcObjects[id].Name != parent.Name):
if additive:
if DEBUG: print("adding ",ifcObjects[id].Name, " to ",parent.Name)
ArchCommands.addComponents(ifcObjects[id],parent)
else:
if DEBUG: print("removing ",ifcObjects[id].Name, " from ",parent.Name)
ArchCommands.removeComponents(ifcObjects[id],parent)
if not IFCOPENSHELL5:
IfcImport.CleanUp()
else:
# use only the internal python parser
FreeCAD.Console.PrintWarning(translate("Arch","IfcOpenShell not found or disabled, falling back on internal parser.")+"\n")
schema=getSchema()
if schema:
if DEBUG: print("opening",filename,"...")
ifc = IfcDocument(filename,schema=schema)
else:
FreeCAD.Console.PrintWarning(translate("Arch","IFC Schema not found, IFC import disabled.")+"\n")
return None
t2 = time.time()
if DEBUG: print("Successfully loaded",ifc,"in %s s" % ((t2-t1)))
# getting walls
for w in ifc.getEnt("IfcWallStandardCase"):
nobj = makeWall(w)
# getting windows and doors
for w in (ifc.getEnt("IfcWindow") + ifc.getEnt("IfcDoor")):
nobj = makeWindow(w)
# getting structs
for w in (ifc.getEnt("IfcSlab") + ifc.getEnt("IfcBeam") + ifc.getEnt("IfcColumn") \
+ ifc.getEnt("IfcFooting")):
nobj = makeStructure(w)
# getting floors
for f in ifc.getEnt("IfcBuildingStorey"):
group(f,ifc,"Floor")
# getting buildings
for b in ifc.getEnt("IfcBuilding"):
group(b,ifc,"Building")
# getting sites
for s in ifc.getEnt("IfcSite"):
group(s,ifc,"Site")
if DEBUG: print("done parsing. Recomputing...")
FreeCAD.ActiveDocument.recompute()
t3 = time.time()
if DEBUG: print("done processing IFC file in %s s" % ((t3-t1)))
return None
def getCleanName(name,ifcid,ifctype):
"Get a clean name from an ifc object"
#print("getCleanName called",name,ifcid,ifctype)
n = name
if not n:
n = ifctype
if PREFIX_NUMBERS:
n = "ID"+str(ifcid)+" "+n
#for c in ",.!?;:":
# n = n.replace(c,"_")
return n
def makeWall(entity,shape=None,name="Wall"):
"makes a wall in the freecad document"
try:
if shape:
# use ifcopenshell
if isinstance(shape,Part.Shape):
body = FreeCAD.ActiveDocument.addObject("Part::Feature",name+"_body")
body.Shape = shape
else:
body = FreeCAD.ActiveDocument.addObject("Mesh::Feature",name+"_body")
body.Mesh = shape
wall = Arch.makeWall(body,name=name)
wall.Label = name
if DEBUG: print(" made wall object ",entity,":",wall)
return wall
# use internal parser
if DEBUG: print("=====> making wall",entity.id)
placement = wall = wire = body = width = height = None
placement = getPlacement(entity.ObjectPlacement)
if DEBUG: print(" got wall placement",entity.id,":",placement)
width = entity.getProperty("Width")
height = entity.getProperty("Height")
if width and height:
if DEBUG: print(" got width, height ",entity.id,":",width,"/",height)
for r in entity.Representation.Representations:
if r.RepresentationIdentifier == "Axis":
wire = getWire(r.Items,placement)
wall = Arch.makeWall(wire,width,height,align="Center",name="Wall"+str(entity.id))
else:
if DEBUG: print(" no height or width properties found...")
for r in entity.Representation.Representations:
if r.RepresentationIdentifier == "Body":
for b in r.Items:
if b.type == "IFCEXTRUDEDAREASOLID":
norm = getVector(b.ExtrudedDirection)
norm.normalize()
wire = getWire(b.SweptArea,placement)
wall = Arch.makeWall(wire,width=0,height=b.Depth,name="Wall"+str(entity.id))
wall.Normal = norm
if wall:
if DEBUG: print(" made wall object ",entity.id,":",wall)
return wall
if DEBUG: print(" error: skipping wall",entity.id)
return None
except Exception:
if DEBUG: print(" error: skipping wall",entity)
return None
def makeWindow(entity,shape=None,name="Window"):
"makes a window in the freecad document"
try:
if shape:
# use ifcopenshell
if isinstance(shape,Part.Shape):
window = Arch.makeWindow(name=name)
window.Shape = shape
window.Label = name
if DEBUG: print(" made window object ",entity,":",window)
return window
# use internal parser
if DEBUG: print("=====> making window",entity.id)
placement = window = wire = body = width = height = None
placement = getPlacement(entity.ObjectPlacement)
if DEBUG: print("got window placement",entity.id,":",placement)
width = entity.getProperty("Width")
height = entity.getProperty("Height")
for r in entity.Representation.Representations:
if r.RepresentationIdentifier == "Body":
for b in r.Items:
if b.type == "IFCEXTRUDEDAREASOLID":
wire = getWire(b.SweptArea,placement)
window = Arch.makeWindow(wire,width=b.Depth,name=objtype+str(entity.id))
if window:
if DEBUG: print(" made window object ",entity.id,":",window)
return window
if DEBUG: print(" error: skipping window",entity.id)
return None
except Exception:
if DEBUG: print(" error: skipping window",entity)
return None
def makeStructure(entity,shape=None,ifctype=None,name="Structure"):
"makes a structure in the freecad document"
try:
if shape:
# use ifcopenshell
if isinstance(shape,Part.Shape):
body = FreeCAD.ActiveDocument.addObject("Part::Feature",name+"_body")
body.Shape = shape
else:
body = FreeCAD.ActiveDocument.addObject("Mesh::Feature",name+"_body")
body.Mesh = shape
structure = Arch.makeStructure(body,name=name)
structure.Label = name
if ifctype == "IfcBeam":
structure.Role = "Beam"
elif ifctype == "IfcColumn":
structure.Role = "Column"
elif ifctype == "IfcSlab":
structure.Role = "Slab"
elif ifctype == "IfcFooting":
structure.Role = "Foundation"
if DEBUG: print(" made structure object ",entity,":",structure," (type: ",ifctype,")")
return structure
# use internal parser
if DEBUG: print("=====> making struct",entity.id)
placement = structure = wire = body = width = height = None
placement = getPlacement(entity.ObjectPlacement)
if DEBUG: print("got window placement",entity.id,":",placement)
width = entity.getProperty("Width")
height = entity.getProperty("Height")
for r in entity.Representation.Representations:
if r.RepresentationIdentifier == "Body":
for b in r.Items:
if b.type == "IFCEXTRUDEDAREASOLID":
wire = getWire(b.SweptArea,placement)
structure = Arch.makeStructure(wire,height=b.Depth,name=objtype+str(entity.id))
if structure:
if DEBUG: print(" made structure object ",entity.id,":",structure)
return structure
if DEBUG: print(" error: skipping structure",entity.id)
return None
except Exception:
if DEBUG: print(" error: skipping structure",entity)
return None
def makeSite(entity,shape=None,name="Site"):
"makes a site in the freecad document"
try:
body = None
if shape:
# use ifcopenshell
if isinstance(shape,Part.Shape):
body = FreeCAD.ActiveDocument.addObject("Part::Feature",name+"_body")
body.Shape = shape
else:
body = FreeCAD.ActiveDocument.addObject("Mesh::Feature",name+"_body")
body.Mesh = shape
site = Arch.makeSite(name=name)
site.Label = name
if body:
site.Terrain = body
if DEBUG: print(" made site object ",entity,":",site)
return site
except Exception:
return None
def makeSpace(entity,shape=None,name="Space"):
"makes a space in the freecad document"
try:
if shape:
# use ifcopenshell
if isinstance(shape,Part.Shape):
space = Arch.makeSpace(name=name)
space.Label = name
body = FreeCAD.ActiveDocument.addObject("Part::Feature",name+"_body")
body.Shape = shape
space.Base = body
body.ViewObject.hide()
if DEBUG: print(" made space object ",entity,":",space)
return space
except Exception:
return None
def makeRoof(entity,shape=None,name="Roof"):
"makes a roof in the freecad document"
try:
if shape:
# use ifcopenshell
if isinstance(shape,Part.Shape):
roof = Arch.makeRoof(name=name)
roof.Label = name
roof.Shape = shape
if DEBUG: print(" made roof object ",entity,":",roof)
return roof
except Exception:
return None
# geometry helpers ###################################################################
def getMesh(obj):
"gets mesh and placement from an IfcOpenShell object"
if IFCOPENSHELL5:
return None,None
print("fixme: mesh data not yet supported") # TODO implement this with OCC tessellate
import Mesh
meshdata = []
print(obj.mesh.faces)
print(obj.mesh.verts)
f = obj.mesh.faces
v = obj.mesh.verts
for i in range(0, len(f), 3):
face = []
for j in range(3):
vi = f[i+j]*3
face.append([v[vi],v[vi+1],v[vi+2]])
meshdata.append(face)
print(meshdata)
me = Mesh.Mesh(meshdata)
# get transformation matrix
m = obj.matrix
mat = FreeCAD.Matrix(m[0], m[3], m[6], m[9],
m[1], m[4], m[7], m[10],
m[2], m[5], m[8], m[11],
0, 0, 0, 1)
pl = FreeCAD.Placement(mat)
return me,pl
def getShape(obj,objid):
"gets a shape from an IfcOpenShell object"
#print("retrieving shape from obj ",objid)
import Part
sh=Part.Shape()
brep_data = None
if IFCOPENSHELL5:
try:
if hasattr(IfcImport,"SEW_SHELLS"):
ss = IfcImport.SEW_SHELLS
else:
ss = 0
if SEPARATE_OPENINGS and hasattr(IfcImport,"DISABLE_OPENING_SUBTRACTIONS"):
if SEPARATE_PLACEMENTS and hasattr(IfcImport,"DISABLE_OBJECT_PLACEMENT"):
brep_data = IfcImport.create_shape(obj,IfcImport.DISABLE_OPENING_SUBTRACTIONS | IfcImport.DISABLE_OBJECT_PLACEMENT | ss)
else:
brep_data = IfcImport.create_shape(obj,IfcImport.DISABLE_OPENING_SUBTRACTIONS | ss)
else:
if SEPARATE_PLACEMENTS and hasattr(IfcImport,"DISABLE_OBJECT_PLACEMENT"):
brep_data = IfcImport.create_shape(obj,IfcImport.DISABLE_OBJECT_PLACEMENT | ss)
else:
brep_data = IfcImport.create_shape(obj, ss)
except Exception:
print("Unable to retrieve shape data")
else:
brep_data = obj.mesh.brep_data
if brep_data:
try:
if MAKETEMPFILES:
import tempfile
th,tf = tempfile.mkstemp(suffix=".brp")
of = pyopen(tf,"wb")
of.write(brep_data)
of.close()
os.close(th)
sh = Part.read(tf)
os.remove(tf)
else:
sh.importBrepFromString(brep_data)
except Exception:
print(" error: malformed shape")
return None
else:
if IFCOPENSHELL5 and SEPARATE_PLACEMENTS:
p = getPlacement(getAttr(obj,"ObjectPlacement"))
if p:
sh.Placement = p
if not sh.Solids:
# try to extract a solid shape
if sh.Faces:
try:
if DEBUG: print(" malformed solid. Attempting to fix...")
shell = Part.makeShell(sh.Faces)
if shell:
solid = Part.makeSolid(shell)
if solid:
sh = solid
except Exception:
if DEBUG: print(" failed to retrieve solid from object ",objid)
else:
if DEBUG: print(" object ", objid, " doesn't contain any geometry")
if not IFCOPENSHELL5:
m = obj.matrix
mat = FreeCAD.Matrix(m[0], m[3], m[6], m[9],
m[1], m[4], m[7], m[10],
m[2], m[5], m[8], m[11],
0, 0, 0, 1)
sh.Placement = FreeCAD.Placement(mat)
# if DEBUG: print("getting Shape from ",obj)
#print("getting shape: ",sh,sh.Solids,sh.Volume,sh.isValid(),sh.isNull())
#for v in sh.Vertexes: print(v.Point)
if sh:
if not sh.isNull():
return sh
return None
def getPlacement(entity):
"returns a placement from the given entity"
if not entity:
return None
if DEBUG: print(" getting placement ",entity)
if IFCOPENSHELL5:
if isinstance(entity,int):
entity = ifc.by_id(entity)
entitytype = str(entity).split("=")[1].split("(")[0].upper()
entityid = int(str(entity).split("=")[0].strip("#"))
else:
entitytype = entity.type.upper()
entityid = entity.id
pl = None
if entitytype == "IFCAXIS2PLACEMENT3D":
x = getVector(getAttr(entity,"RefDirection"))
z = getVector(getAttr(entity,"Axis"))
if not(x) or not(z):
return None
y = z.cross(x)
loc = getVector(getAttr(entity,"Location"))
m = DraftVecUtils.getPlaneRotation(x,y,z)
pl = FreeCAD.Placement(m)
pl.move(loc)
elif entitytype == "IFCLOCALPLACEMENT":
pl = getPlacement(getAttr(entity,"PlacementRelTo"))
relpl = getPlacement(getAttr(entity,"RelativePlacement"))
if pl and relpl:
pl = relpl.multiply(pl)
elif relpl:
pl = relpl
elif entitytype == "IFCCARTESIANPOINT":
loc = getVector(entity)
pl = FreeCAD.Placement()
pl.move(loc)
if DEBUG: print(" made placement for ",entityid,":",pl)
return pl
def getAttr(entity,attr):
"returns the given attribute from the given entity"
if IFCOPENSHELL5:
if isinstance(entity,int):
entity = ifc.by_id(entity)
i = entity.get_argument_index(attr)
return entity.get_argument(i)
else:
return getattr(entity,attr)
def getVector(entity):
"returns a vector from the given entity"
if not entity:
return None
if DEBUG: print(" getting point from ",entity)
if IFCOPENSHELL5:
if isinstance(entity,int):
entity = ifc.by_id(entity)
entitytype = str(entity).split("=")[1].split("(")[0].upper()
else:
entitytype = entity.type.upper()
if entitytype == "IFCDIRECTION":
DirectionRatios = getAttr(entity,"DirectionRatios")
if len(DirectionRatios) == 3:
return FreeCAD.Vector(tuple(DirectionRatios))
else:
return FreeCAD.Vector(tuple(DirectionRatios+[0]))
elif entitytype == "IFCCARTESIANPOINT":
Coordinates = getAttr(entity,"Coordinates")
if len(Coordinates) == 3:
return FreeCAD.Vector(tuple(Coordinates))
else:
return FreeCAD.Vector(tuple(Coordinates+[0]))
return None
# below is only used by the internal parser #########################################
def getSchema():
"retrieves the express schema"
custom = params.get_param_arch("CustomIfcSchema")
if custom:
if os.path.exists(custom):
if DEBUG: print("Using custom schema: ",custom.split(os.sep)[-1])
return custom
p = None
p = os.path.join(FreeCAD.ConfigGet("UserAppData"),SCHEMA.split(os.sep)[-1])
if os.path.exists(p):
return p
import ArchCommands
p = ArchCommands.download(SCHEMA)
if p:
return p
return None
def group(entity,ifc,mode=None):
"gathers the children of the given entity"
# only used by the internal parser
try:
if DEBUG: print("=====> making group",entity.id)
placement = None
placement = getPlacement(entity.ObjectPlacement)
if DEBUG: print("got cell placement",entity.id,":",placement)
subelements = ifc.find("IFCRELCONTAINEDINSPATIALSTRUCTURE","RelatingStructure",entity)
subelements.extend(ifc.find("IFCRELAGGREGATES","RelatingObject",entity))
elts = []
for s in subelements:
if hasattr(s,"RelatedElements"):
s = s.RelatedElements
if not isinstance(s,list): s = [s]
elts.extend(s)
elif hasattr(s,"RelatedObjects"):
s = s.RelatedObjects
if not isinstance(s,list): s = [s]
elts.extend(s)
elif hasattr(s,"RelatedObject"):
s = s.RelatedObject
if not isinstance(s,list): s = [s]
elts.extend(s)
print("found dependent elements: ",elts)
groups = [['Wall',['IfcWallStandardCase'],[]],
['Window',['IfcWindow','IfcDoor'],[]],
['Structure',['IfcSlab','IfcFooting','IfcBeam','IfcColumn'],[]],
['Floor',['IfcBuildingStorey'],[]],
['Building',['IfcBuilding'],[]],
['Furniture',['IfcFurnishingElement'],[]]]
for e in elts:
for g in groups:
for t in g[1]:
if e.type.upper() == t.upper():
if hasattr(FreeCAD.ActiveDocument,g[0]+str(e.id)):
g[2].append(FreeCAD.ActiveDocument.getObject(g[0]+str(e.id)))
print("groups:",groups)
comps = []
if CREATE_IFC_GROUPS:
if DEBUG:wprint("creating subgroups")
for g in groups:
if g[2]:
if g[0] in ['Building','Floor']:
comps.extend(g[2])
else:
fcg = FreeCAD.ActiveDocument.addObject("App::DocumentObjectGroup",g[0]+"s")
for o in g[2]:
fcg.addObject(o)
comps.append(fcg)
else:
for g in groups:
comps.extend(g[2])
label = entity.Name
name = mode + str(entity.id)
cell = None
if mode == "Site":
cell = Arch.makeSite(comps,name=name)
elif mode == "Floor":
cell = Arch.makeFloor(comps,name=name)
elif mode == "Building":
cell = Arch.makeBuilding(comps,name=name)
if label and cell:
cell.Label = label
except Exception:
if DEBUG: print("error: skipping group ",entity.id)
def getWire(entity,placement=None):
"returns a wire (created in the freecad document) from the given entity"
# only used by the internal parser
if DEBUG: print("making Wire from :",entity)
if not entity: return None
if entity.type == "IFCPOLYLINE":
pts = []
for p in entity.Points:
pts.append(getVector(p))
return Draft.getWire(pts,placement=placement)
elif entity.type == "IFCARBITRARYCLOSEDPROFILEDEF":
pts = []
for p in entity.OuterCurve.Points:
pts.append(getVector(p))
return Draft.getWire(pts,closed=True,placement=placement)
# EXPORT ##########################################################
def export(exportList,filename):
"called when freecad exports a file"
global ifcw
ifcw = None
try:
import IfcImport as ifcw
except ImportError:
try:
import ifc_wrapper as ifcw
except ImportError:
FreeCAD.Console.PrintError(translate("Arch","Error: IfcOpenShell is not installed")+"\n")
print("""importIFC: ifcOpenShell is not installed. IFC export is unavailable.
Note: IFC export currently requires an experimental version of IfcOpenShell
available from https://github.com/aothms/IfcOpenShell""")
return
if (not hasattr(ifcw,"IfcFile")) and (not hasattr(ifcw,"file")):
FreeCAD.Console.PrintError(translate("Arch","Error: your IfcOpenShell version is too old")+"\n")
print("""importIFC: The version of ifcOpenShell installed on this system doesn't
have IFC export capabilities. IFC export currently requires an experimental
version of IfcOpenShell available from https://github.com/aothms/IfcOpenShell""")
return
import Arch,Draft
# creating base IFC project
getConfig()
scaling = params.get_param_arch("IfcScalingFactor")
exporttxt = params.get_param_arch("IfcExportList")
forcebrep = params.get_param_arch("ifcExportAsBrep")
application = "FreeCAD"
ver = FreeCAD.Version()
version = ver[0]+"."+ver[1]+" build"+ver[2]
owner = FreeCAD.ActiveDocument.CreatedBy
company = FreeCAD.ActiveDocument.Company
project = FreeCAD.ActiveDocument.Name
ifc = IfcWriter(filename,project,owner,company,application,version)
txt = []
# get all children and reorder list to get buildings and floors processed first
objectslist = Draft.get_group_contents(exportList, walls=True,
addgroups=True)
objectslist = Arch.pruneIncluded(objectslist)
sites = []
buildings = []
floors = []
groups = {}
others = []
for obj in objectslist:
otype = Draft.getType(obj)
if otype == "Site":
sites.append(obj)
elif otype == "Building":
buildings.append(obj)
elif otype == "Floor":
floors.append(obj)
elif otype == "Group":
groups[obj.Name] = []
else:
others.append(obj)
objectslist = buildings + floors + others
if DEBUG: print("adding ", len(objectslist), " objects")
global unprocessed
unprocessed = []
# process objects
for obj in objectslist:
otype = Draft.getType(obj)
name = str(obj.Label)
parent = Arch.getHost(obj)
gdata = None
fdata = None
placement = None
color = None
representation = None
descr = None
extra = None
# setting the IFC type
if hasattr(obj,"Role"):
ifctype = obj.Role.replace(" ","")
elif otype == "Foundation":
ifctype = "Footing"
elif otype == "Rebar":
ifctype = "ReinforcingBar"
elif otype == "Undefined":
ifctype = "BuildingElementProxy"
elif otype.startswith("Part::"):
ifctype = "BuildingElementProxy"
else:
ifctype = otype
# getting the "Force BREP" flag
brepflag = False
if hasattr(obj,"IfcAttributes"):
if "FlagForceBrep" in obj.IfcAttributes:
if obj.IfcAttributes["FlagForceBrep"] == "True":
brepflag = True
if DEBUG: print("Adding " + obj.Label + " as Ifc" + ifctype)
# writing IFC data
if obj.isDerivedFrom("App::DocumentObjectGroup"):
# getting parent building
if parent:
parent = ifc.findByName("IfcBuilding",str(parent.Label))
if otype == "Site":
print(" Skipping (not implemented yet)") # TODO manage sites
elif otype == "Building":
ifc.addBuilding( name=name )
elif otype == "Floor":
ifc.addStorey( building=parent, name=name )
elif obj.isDerivedFrom("Part::Feature"):
# get color
if FreeCAD.GuiUp:
color = obj.ViewObject.ShapeColor[:3]
# get parent floor
if parent:
parent = ifc.findByName("IfcBuildingStorey",str(parent.Label))
# get representation
if (not forcebrep) and (not brepflag):
gdata = getIfcExtrusionData(obj,scaling,SEPARATE_OPENINGS)
#if DEBUG: print(" extrusion data for ",obj.Label," : ",gdata)
if not gdata:
fdata = getIfcBrepFacesData(obj,scaling)
#if DEBUG: print(" brep data for ",obj.Label," : ",fdata)
if not fdata:
if obj.isDerivedFrom("Part::Feature"):
print(" Error retrieving the shape of object ", obj.Label)
unprocessed.append(obj)
continue
else:
if DEBUG: print(" No geometry")
else:
if DEBUG: print(" Brep")
else:
if DEBUG: print(" Extrusion")
if gdata:
# gdata = [ type, profile data, extrusion data, placement data ]
placement = ifc.addPlacement(origin=gdata[3][0],xaxis=gdata[3][1],zaxis=gdata[3][2])
if gdata[0] == "polyline":
representation = ifc.addExtrudedPolyline(gdata[1], gdata[2], color=color)
elif gdata[0] == "circle":
representation = ifc.addExtrudedCircle(gdata[1], gdata[2], color=color)
elif gdata[0] == "ellipse":
representation = ifc.addExtrudedEllipse(gdata[1], gdata[2], color=color)
elif gdata[0] == "composite":
representation = ifc.addExtrudedCompositeCurve(gdata[1], gdata[2], color=color)
else:
print("debug: unknown extrusion type")
elif fdata:
representation = [ifc.addFacetedBrep(f, color=color) for f in fdata]
# create ifc object
ifctype = "Ifc" + ifctype
if hasattr(obj,"Description"):
descr = obj.Description
if otype == "Wall":
if gdata:
if gdata[0] == "polyline":
ifctype = "IfcWallStandardCase"
elif otype == "Structure":
if ifctype in ["IfcSlab","IfcFooting"]:
extra = ["NOTDEFINED"]
elif otype == "Window":
extra = [obj.Width.Value*scaling, obj.Height.Value*scaling]
elif otype == "Space":
extra = ["ELEMENT","INTERNAL",getIfcElevation(obj)]
elif otype.startswith("Part::"):
extra = ["ELEMENT"]
if not ifctype in supportedIfcTypes:
if DEBUG: print(" Type ",ifctype," is not supported yet. Exporting as IfcBuildingElementProxy instead")
ifctype = "IfcBuildingElementProxy"
extra = ["ELEMENT"]
product = ifc.addProduct( ifctype, representation, storey=parent, placement=placement, name=name, description=descr, extra=extra )
if product:
# removing openings
if SEPARATE_OPENINGS and gdata:
for o in obj.Subtractions:
print("Subtracting ",o.Label)
fdata = getIfcBrepFacesData(o,scaling,sub=True)
representation = [ifc.addFacetedBrep(f, color=color) for f in fdata]
p2 = ifc.addProduct( "IfcOpeningElement", representation, storey=product, placement=None, name=str(o.Label), description=None)
# writing text log
spacer = ""
for i in range(36-len(obj.Label)):
spacer += " "
txt.append(obj.Label + spacer + ifctype)
# adding object to group, if any
for g in groups.keys():
group = FreeCAD.ActiveDocument.getObject(g)
if group:
for o in group.Group:
if o.Name == obj.Name:
groups[g].append(product)
else:
unprocessed.append(obj)
else:
if DEBUG: print("Object type ", otype, " is not supported yet.")
# processing groups
for name,entities in groups.items():
if entities:
o = FreeCAD.ActiveDocument.getObject(name)
if o:
if DEBUG: print("Adding group ", o.Label, " with ",len(entities)," elements")
grp = ifc.addGroup( entities, o.Label )
ifc.write()
if exporttxt:
import time, os
txtstring = "List of objects exported by FreeCAD in file\n"
txtstring += filename + "\n"
txtstring += "On " + time.ctime() + "\n"
txtstring += "\n"
txtstring += str(len(txt)) + " objects exported:\n"
txtstring += "\n"
txtstring += "Nr Name Type\n"
txtstring += "\n"
for i in range(len(txt)):
idx = str(i+1)
sp = ""
for j in range(8-len(idx)):
sp += " "
txtstring += idx + sp + txt[i] + "\n"
txtfile = os.path.splitext(filename)[0]+".txt"
f = pyopen(txtfile,"wb")
f.write(txtstring)
f.close()
FreeCAD.ActiveDocument.recompute()
if unprocessed:
print("\nWARNING: " + str(len(unprocessed)) + " objects were not exported (stored in importIFC.unprocessed):")
for o in unprocessed:
print(" " + o.Label)
def getTuples(data,scale=1,placement=None,normal=None,close=True):
"""getTuples(data,[scale,placement,normal,close]): returns a tuple or a list of tuples from a vector
or from the vertices of a shape. Scale can indicate a scale factor"""
rnd = False
import Part
if isinstance(data,FreeCAD.Vector):
if placement:
data = placement.multVec(data)
if rnd:
data = DraftVecUtils.rounded(data)
return (data.x*scale,data.y*scale,data.z*scale)
elif isinstance(data,Part.Shape):
t = []
if len(data.Wires) == 1:
import Part,DraftGeomUtils
data = Part.Wire(Part.__sortEdges__(data.Wires[0].Edges))
verts = data.Vertexes
try:
c = data.CenterOfMass
v1 = verts[0].Point.sub(c)
v2 = verts[1].Point.sub(c)
if DraftVecUtils.angle(v2,v1,normal) >= 0:
# inverting verts order if the direction is couterclockwise
verts.reverse()
except Exception:
pass
for v in verts:
pt = v.Point
if placement:
if not placement.isIdentity():
pt = placement.multVec(pt)
if rnd:
pt = DraftVecUtils.rounded(pt)
t.append((pt.x*scale,pt.y*scale,pt.z*scale))
if close: # faceloops must not be closed, but ifc profiles must.
t.append(t[0])
else:
print("Arch.getTuples(): Wrong profile data")
return t
def getIfcExtrusionData(obj,scale=1,nosubs=False):
"""getIfcExtrusionData(obj,[scale,nosubs]): returns a closed path (a list of tuples), a tuple expressing an extrusion
vector, and a list of 3 tuples for base position, x axis and z axis. Or returns None, if a base loop and
an extrusion direction cannot be extracted. Scale can indicate a scale factor."""
CURVEMODE = "PARAMETER" # For trimmed curves. CARTESIAN or PARAMETER
if hasattr(obj,"Additions"):
if obj.Additions:
# TODO provisorily treat objs with additions as breps
return None
if hasattr(obj,"Subtractions") and not nosubs:
if obj.Subtractions:
return None
if hasattr(obj,"Proxy"):
if hasattr(obj.Proxy,"getProfiles"):
p = obj.Proxy.getProfiles(obj,noplacement=True)
v = obj.Proxy.getExtrusionVector(obj,noplacement=True)
if (len(p) == 1) and v:
p = p[0]
r = FreeCAD.Placement()
#b = p.CenterOfMass
r = obj.Proxy.getPlacement(obj)
#b = obj.Placement.multVec(FreeCAD.Vector())
#r.Rotation = DraftVecUtils.getRotation(v,FreeCAD.Vector(0,0,1))
d = [r.Base,DraftVecUtils.rounded(r.Rotation.multVec(FreeCAD.Vector(1,0,0))),DraftVecUtils.rounded(r.Rotation.multVec(FreeCAD.Vector(0,0,1)))]
#r = r.inverse()
#print("getExtrusionData: computed placement:",r)
import Part
if len(p.Edges) == 1:
if isinstance(p.Edges[0].Curve,Part.Circle):
# Circle profile
r1 = p.Edges[0].Curve.Radius*scale
return "circle", [getTuples(p.Edges[0].Curve.Center,scale), r1], getTuples(v,scale), d
elif isinstance(p.Edges[0].Curve,Part.Ellipse):
# Ellipse profile
r1 = p.Edges[0].Curve.MajorRadius*scale
r2 = p.Edges[0].Curve.MinorRadius*scale
return "ellipse", [getTuples(p.Edges[0].Curve.Center,scale), r1, r2], getTuples(v,scale), d
curves = False
for e in p.Edges:
if isinstance(e.Curve,Part.Circle):
curves = True
elif not isinstance(e.Curve,Part.LineSegment):
print("Arch.getIfcExtrusionData: Warning: unsupported edge type in profile")
if curves:
# Composite profile
ecurves = []
last = None
import DraftGeomUtils
edges = Part.__sortEdges__(p.Edges)
for e in edges:
if isinstance(e.Curve,Part.Circle):
import math
follow = True
if last:
if not DraftVecUtils.equals(last,e.Vertexes[0].Point):
follow = False
last = e.Vertexes[0].Point
else:
last = e.Vertexes[-1].Point
else:
last = e.Vertexes[-1].Point
p1 = math.degrees(-DraftVecUtils.angle(e.Vertexes[0].Point.sub(e.Curve.Center)))
p2 = math.degrees(-DraftVecUtils.angle(e.Vertexes[-1].Point.sub(e.Curve.Center)))
da = DraftVecUtils.angle(e.valueAt(e.FirstParameter+0.1).sub(e.Curve.Center),e.Vertexes[0].Point.sub(e.Curve.Center))
if p1 < 0:
p1 = 360 + p1
if p2 < 0:
p2 = 360 + p2
if da > 0:
follow = not(follow)
if CURVEMODE == "CARTESIAN":
# BUGGY
p1 = getTuples(e.Vertexes[0].Point,scale)
p2 = getTuples(e.Vertexes[-1].Point,scale)
ecurves.append(["arc",getTuples(e.Curve.Center,scale),e.Curve.Radius*scale,[p1,p2],follow,CURVEMODE])
else:
verts = [vertex.Point for vertex in e.Vertexes]
if last:
if not DraftVecUtils.equals(last,verts[0]):
verts.reverse()
last = e.Vertexes[0].Point
else:
last = e.Vertexes[-1].Point
else:
last = e.Vertexes[-1].Point
ecurves.append(["line",[getTuples(vert,scale) for vert in verts]])
return "composite", ecurves, getTuples(v,scale), d
else:
# Polyline profile
return "polyline", getTuples(p,scale), getTuples(v,scale), d
return None
def getIfcBrepFacesData(obj,scale=1,sub=False,tessellation=1):
"""getIfcBrepFacesData(obj,[scale,tessellation]): returns a list(0) of lists(1) of lists(2) of lists(3),
list(3) being a list of vertices defining a loop, list(2) describing a face from one or
more loops, list(1) being the whole solid made of several faces, list(0) being the list
of solids inside the object. Scale can indicate a scaling factor. Tessellation is the tessellation
factor to apply on curved faces."""
shape = None
if sub:
if hasattr(obj,"Proxy"):
if hasattr(obj.Proxy,"getSubVolume"):
shape = obj.Proxy.getSubVolume(obj)
if not shape:
if hasattr(obj,"Shape"):
if obj.Shape:
if not obj.Shape.isNull():
#if obj.Shape.isValid():
shape = obj.Shape
elif hasattr(obj,"Terrain"):
if obj.Terrain:
if hasattr(obj.Terrain,"Shape"):
if obj.Terrain.Shape:
if not obj.Terrain.Shape.isNull():
if obj.Terrain.Shape.isValid():
shape = obj.Terrain.Shape
if shape:
import Part
sols = []
if shape.Solids:
dataset = shape.Solids
else:
dataset = shape.Shells
print("Warning! object contains no solids")
for sol in shape.Solids:
s = []
curves = False
for face in sol.Faces:
for e in face.Edges:
if not isinstance(e.Curve,Part.LineSegment):
curves = True
if curves:
tris = sol.tessellate(tessellation)
for tri in tris[1]:
f = []
for i in tri:
f.append(getTuples(tris[0][i],scale))
s.append([f])
else:
for face in sol.Faces:
f = []
f.append(getTuples(face.OuterWire,scale,normal=face.normalAt(0,0),close=False))
for wire in face.Wires:
if wire.hashCode() != face.OuterWire.hashCode():
f.append(getTuples(wire,scale,normal=DraftVecUtils.neg(face.normalAt(0,0)),close=False))
s.append(f)
sols.append(s)
return sols
return None
def getIfcElevation(obj):
"""getIfcElevation(obj): Returns the lowest height (Z coordinate) of this object"""
if obj.isDerivedFrom("Part::Feature"):
b = obj.Shape.BoundBox
return b.ZMin
return 0
def explore(filename=None):
"explore the contents of an ifc file in a Qt dialog"
if not filename:
from PySide import QtGui
filename = QtGui.QFileDialog.getOpenFileName(QtGui.QApplication.activeWindow(),'Open IFC file',None,'IFC files (*.ifc *.IFC)')
if filename:
filename = filename[0]
if filename:
getConfig()
schema=getSchema()
d = explorer(filename,schema)
d.show()
return d
# IfcReader #############################################
class IfcSchema:
SIMPLETYPES = ["INTEGER", "REAL", "STRING", "NUMBER", "LOGICAL", "BOOLEAN"]
NO_ATTR = ["WHERE", "INVERSE","WR2","WR3", "WR4", "WR5", "UNIQUE", "DERIVE"]
def __init__(self, filename):
self.filename = filename
if not os.path.exists(filename):
filename = FreeCAD.getUserMacroDir(True) + os.sep + filename
if not os.path.exists(filename):
raise ImportError("no IFCSchema file found!")
self.file = open(self.filename)
self.data = self.file.read()
self.types = self.readTypes()
self.entities = self.readEntities()
if DEBUG: print("Parsed from schema %s: %s entities and %s types" % (self.filename, len(self.entities), len(self.types)))
def readTypes(self):
"""
Parse all the possible types from the schema,
returns a dictionary Name -> Type
"""
types = {}
for m in re.finditer("TYPE (.*) = (.*);", self.data):
typename, typetype = m.groups()
if typetype in self.SIMPLETYPES:
types[typename] = typetype
else:
types[typename] = "#" + typetype
return types
def readEntities(self):
"""
Parse all the possible entities from the schema,
returns a dictionary of the form:
{ name: {
"supertype": supertype,
"attributes": [{ key: value }, ..]
}}
"""
entities = {}
# Regexes must be greedy to prevent matching outer entity and end_entity strings
# Regexes have re.DOTALL to match newlines
for m in re.finditer("ENTITY (.*?)END_ENTITY;", self.data, re.DOTALL):
entity = {}
raw_entity_str = m.groups()[0]
entity["name"] = re.search("(.*?)[;|\s]", raw_entity_str).groups()[0].upper()
subtypeofmatch = re.search(".*SUBTYPE OF \((.*?)\);", raw_entity_str)
entity["supertype"] = subtypeofmatch.groups()[0].upper() if subtypeofmatch else None
# find the shortest string matched from the end of the entity type header to the
# first occurrence of a NO_ATTR string (when it occurs on a new line)
inner_str = re.search(";(.*?)$", raw_entity_str, re.DOTALL).groups()[0]
attrs_str = min([inner_str.partition("\r\n "+a)[0] for a in self.NO_ATTR])
attrs = []
for am in re.finditer("(.*?) : (.*?);", attrs_str, re.DOTALL):
name, attr_type = [s.replace("\r\n\t","") for s in am.groups()]
attrs.append((name, attr_type))
entity["attributes"] = attrs
entities[entity["name"]] = entity
return entities
def getAttributes(self, name):
"""
Get all attributes af an entity, including supertypes
"""
ent = self.entities[name]
attrs = []
while ent is not None:
this_ent_attrs = copy.copy(ent["attributes"])
this_ent_attrs.reverse()
attrs.extend(this_ent_attrs)
ent = self.entities.get(ent["supertype"], None)
attrs.reverse()
return attrs
def capitalize(self, name):
"returns a capitalized version of a type"
if name.upper() in self.data.upper():
i1 = self.data.upper().index(name.upper())
i2 = i1 + len(name)
name = self.data[i1:i2]
return name
class IfcFile:
"""
Parses an ifc file given by filename, entities can be retrieved by name and id
The whole file is stored in a dictionary (in memory)
"""
entsById = {}
entsByName = {}
def __init__(self, filename,schema):
self.filename = filename
self.schema = IfcSchema(schema)
self.file = open(self.filename)
self.entById, self.entsByName, self.header = self.read()
self.file.close()
if DEBUG: print("Parsed from file %s: %s entities" % (self.filename, len(self.entById)))
def getEntityById(self, id):
return self.entById.get(id, None)
def getEntitiesByName(self, name):
return self.entsByName.get(name, None)
def read(self):
"""
Returns 2 dictionaries, entById and entsByName
"""
entById = {}
entsByName = {}
header = 'HEADER '
readheader = False
for line in self.file:
e = self.parseLine(line)
if e:
entById[int(e["id"])] = e
ids = e.get(e["name"],[])
ids.append(e["id"])
entsByName[e["name"]] = list(set(ids))
elif 'HEADER' in line:
readheader = True
elif readheader:
if 'ENDSEC' in line:
readheader = False
else:
header += line
return [entById, entsByName, header]
def parseLine(self, line):
"""
Parse a line
"""
m = IFCLINE_RE.search(line) # id,name,attrs
if m:
id, name, attrs = m.groups()
id = id.strip()
name = name.strip()
attrs = attrs.strip()
else:
return False
return {"id": id, "name": name, "attributes": self.parseAttributes(name, attrs)}
def parseAttributes(self, ent_name, attrs_str):
"""
Parse the attributes of a line
"""
parts = []
lastpos = 0
while lastpos < len(attrs_str):
newpos = self.nextString(attrs_str, lastpos)
parts.extend(self.parseAttribute(attrs_str[lastpos:newpos-1]))
lastpos = newpos
schema_attributes = self.schema.getAttributes(ent_name)
assert len(schema_attributes) == len(parts), \
"Expected %s attributes, got %s (entity: %s" % \
(len(schema_attributes), len(parts), ent_name)
attribute_names = [a[0] for a in schema_attributes]
return dict(zip(attribute_names, parts))
def parseAttribute(self, attr_str):
"""
Map a single attribute to a python type (recursively)
"""
parts = []
lastpos = 0
while lastpos < len(attr_str):
newpos = self.nextString(attr_str, lastpos)
s = attr_str[lastpos:newpos-1]
if (s[0] == "(" and s[-1] == ")"): # list, recurse
parts.append(self.parseAttribute(s[1:-1]))
else:
try:
parts.append(float(s)) # number, any kind
except ValueError:
if s[0] == "'" and s[-1] == "'": # string
parts.append(s[1:-1])
elif s == "$":
parts.append(None)
else:
parts.append(s) # ref, enum or other
lastpos = newpos
return parts
def nextString(self, s, start):
"""
Parse the data part of a line
"""
parens = 0
quotes = 0
for pos in range(start,len(s)):
c = s[pos]
if c == "," and parens == 0 and quotes == 0:
return pos+1
elif c == "(" and quotes == 0:
parens += 1
elif c == ")" and quotes == 0:
parens -= 1
elif c == "\'" and quotes == 0:
quotes = 1
elif c =="\'" and quotes == 1:
quotes = 0
return len(s)+1
class IfcEntity:
"a container for an IFC entity"
def __init__(self,ent,doc=None):
self.data = ent
self.id = int(ent['id'])
self.type = ent['name'].upper().strip(",[]()")
self.attributes = ent['attributes']
self.doc = doc
def __repr__(self):
return str(self.id) + ' : ' + self.type + ' ' + str(self.attributes)
def getProperties(self):
return self.doc.find('IFCRELDEFINESBYPROPERTIES','RelatedObjects',self)
def getProperty(self,propName):
"finds the value of the given property or quantity in this object, if exists"
propsets = self.doc.find('IFCRELDEFINESBYPROPERTIES','RelatedObjects',self)
if not propsets: return None
propset = []
for p in propsets:
if hasattr(p.RelatingPropertyDefinition,"HasProperties"):
propset.extend(p.RelatingPropertyDefinition.HasProperties)
elif hasattr(p.RelatingPropertyDefinition,"Quantities"):
propset.extend(p.RelatingPropertyDefinition.Quantities)
for prop in propset:
if prop.Name == propName:
print("found valid",prop)
if hasattr(prop,"LengthValue"):
return prop.LengthValue
elif hasattr(prop,"AreaValue"):
return prop.AreaValue
elif hasattr(prop,"VolumeValue"):
return prop.VolumeValue
elif hasattr(prop,"NominalValue"):
return prop.NominalValue
return None
def getAttribute(self,attr):
"returns the value of the given attribute, if exists"
if hasattr(self,attr):
return self.__dict__[attr]
return None
class IfcDocument:
"an object representing an IFC document"
def __init__(self,filename,schema="IFC2X3_TC1.exp"):
f = IfcFile(filename,schema)
self.filename = filename
self.data = f.entById
self.Entities = {0:f.header}
for k,e in self.data.items():
eid = int(e['id'])
self.Entities[eid] = IfcEntity(e,self)
if DEBUG: print(len(self.Entities),"entities created. Creating attributes...")
for k,ent in self.Entities.items():
if DEBUG: print("attributing entity ",ent)
if hasattr(ent,"attributes"):
for k,v in ent.attributes.items():
if DEBUG: print("parsing attribute: ",k," value ",v)
if isinstance(v,str):
val = self.__clean__(v)
elif isinstance(v,list):
val = []
for item in v:
if isinstance(item,str):
val.append(self.__clean__(item))
else:
val.append(item)
else:
val = v
setattr(ent,k.strip(),val)
if DEBUG: print("Document successfully created")
def __clean__(self,value):
"turns an attribute value into something usable"
try:
val = value.strip(" ()'")
if val[:3].upper() == "IFC":
if "IFCTEXT" in val.upper():
l = val.split("'")
if len(l) == 3: val = l[1]
elif "IFCBOOLEAN" in value.upper():
l = val.split(".")
if len(l) == 3: val = l[1]
if val.upper() == "F": val = False
elif val.upper() == "T": val = True
elif "IFCREAL" in val.upper():
l = val.split("(")
if len(l) == 2: val = float(l[1].strip(")"))
else:
if '#' in val:
if "," in val:
val = val.split(",")
l = []
for subval in val:
if '#' in subval:
s = subval.strip(" #")
if DEBUG: print("referencing ",s," : ",self.getEnt(int(s)))
l.append(self.getEnt(int(s)))
val = l
else:
val = val.strip()
val = val.replace("#","")
if DEBUG: print("referencing ",val," : ",self.getEnt(int(val)))
val = self.getEnt(int(val))
if not val:
val = value
except Exception:
if DEBUG: print("error parsing attribute",value)
val = value
return val
def __repr__(self):
return "IFC Document: " + self.filename + ', ' + str(len(self.Entities)) + " entities "
def getEnt(self,ref):
"gets an entity by id number, or a list of entities by type"
if isinstance(ref,int):
if ref in self.Entities:
return self.Entities[ref]
elif isinstance(ref,str):
l = []
ref = ref.upper()
for k,ob in self.Entities.items():
if hasattr(ob,"type"):
if ob.type == ref:
l.append(ob)
return l
return None
def search(self,pat):
"searches entities types for partial match"
l = []
pat = pat.upper()
for k,ob in self.Entities.items():
if hasattr(ob,"type"):
if pat in ob.type:
if not ob.type in l:
l.append(ob.type)
return l
def find(self,pat1,pat2=None,pat3=None):
'''finds objects in the current IFC document.
arguments can be of the following form:
- (pattern): returns object types matching the given pattern (same as search)
- (type,property,value): finds, in all objects of type "type", those whose
property "property" has the given value
'''
if pat3:
bobs = self.getEnt(pat1)
obs = []
for bob in bobs:
if hasattr(bob,pat2):
if bob.getAttribute(pat2) == pat3:
obs.append(bob)
return obs
elif pat1:
ll = self.search(pat1)
obs = []
for l in ll:
obs.extend(self.getEnt(l))
return obs
return None
def explorer(filename,schema="IFC2X3_TC1.exp"):
"returns a PySide dialog showing the contents of an IFC file"
from PySide import QtCore,QtGui
ifc = IfcDocument(filename,schema)
schema = IfcSchema(schema)
tree = QtGui.QTreeWidget()
tree.setColumnCount(3)
tree.setWordWrap(True)
tree.header().setDefaultSectionSize(60)
tree.header().resizeSection(0,60)
tree.header().resizeSection(1,30)
tree.header().setStretchLastSection(True)
tree.headerItem().setText(0, "ID")
tree.headerItem().setText(1, "")
tree.headerItem().setText(2, "Item and Properties")
bold = QtGui.QFont()
bold.setWeight(75)
bold.setBold(True)
#print(ifc.Entities)
for i in ifc.Entities.keys():
e = ifc.Entities[i]
item = QtGui.QTreeWidgetItem(tree)
if hasattr(e,"id"):
item.setText(0,str(e.id))
if e.type in ["IFCWALL","IFCWALLSTANDARDCASE"]:
item.setIcon(1,QtGui.QIcon(":icons/Arch_Wall_Tree.svg"))
elif e.type in ["IFCCOLUMN","IFCBEAM","IFCSLAB","IFCFOOTING"]:
item.setIcon(1,QtGui.QIcon(":icons/Arch_Structure_Tree.svg"))
elif e.type in ["IFCSITE"]:
item.setIcon(1,QtGui.QIcon(":icons/Arch_Site_Tree.svg"))
elif e.type in ["IFCBUILDING"]:
item.setIcon(1,QtGui.QIcon(":icons/Arch_Building_Tree.svg"))
elif e.type in ["IFCSTOREY"]:
item.setIcon(1,QtGui.QIcon(":icons/Arch_Floor_Tree.svg"))
elif e.type in ["IFCWINDOW"]:
item.setIcon(1,QtGui.QIcon(":icons/Arch_Window_Tree.svg"))
elif e.type in ["IFCROOF"]:
item.setIcon(1,QtGui.QIcon(":icons/Arch_Roof_Tree.svg"))
elif e.type in ["IFCEXTRUDEDAREASOLID","IFCCLOSEDSHELL"]:
item.setIcon(1, QtGui.QIcon(":/icons/Part_3D_object.svg"))
elif e.type in ["IFCFACE"]:
item.setIcon(1,QtGui.QIcon(":icons/Draft_SwitchMode.svg"))
elif e.type in ["IFCARBITRARYCLOSEDPROFILEDEF","IFCPOLYLOOP"]:
item.setIcon(1,QtGui.QIcon(":icons/Draft_Draft.svg"))
item.setText(2,str(schema.capitalize(e.type)))
item.setFont(2,bold);
for a in e.attributes.keys():
if hasattr(e,a):
if not a.upper() in ["ID", "GLOBALID"]:
v = getattr(e,a)
if isinstance(v,IfcEntity):
t = "Entity #" + str(v.id) + ": " + str(v.type)
elif isinstance(v,list):
t = ""
else:
t = str(v)
t = " " + str(a) + " : " + str(t)
item = QtGui.QTreeWidgetItem(tree)
item.setText(2,str(t))
if isinstance(v,list):
for vi in v:
if isinstance(vi,IfcEntity):
t = "Entity #" + str(vi.id) + ": " + str(vi.type)
else:
t = vi
t = " " + str(t)
item = QtGui.QTreeWidgetItem(tree)
item.setText(2,str(t))
d = QtGui.QDialog()
d.setObjectName("IfcExplorer")
d.setWindowTitle("Ifc Explorer")
d.resize(640, 480)
layout = QtGui.QVBoxLayout(d)
layout.addWidget(tree)
return d
# IfcWriter ########################################
class _tempEntityHolder:
"""a temporary object to store entity references
to be made into something nicer later..."""
def __init__(self):
self.refs = []
holder = _tempEntityHolder()
def uid():
"""returns a suitable GlobalID"""
u = str(uuid.uuid4())[:22]
u = u.replace("-","_")
return u
def now(string=False):
"returns a suitable Ifc Time"
if string:
return time.strftime("%Y-%m-%dT%H:%M:%S", time.gmtime())
else:
return int(time.time())
def getPropertyNames(entity):
"""getPropertyNames(entity): Returns a dictionary with
the numbers and names of the pythonproperties available for
this entity"""
ents = {}
if hasattr(entity,"get_argument_count"):
l = entity.get_argument_count()
else:
l = len(entity)
for i in range(l):
ents[i] = entity.get_argument_name(i)
return ents
def getTuple(vec):
"""getTuple(vec): returns a tuple from other coordinate
structures: tuple, list, 3d vector, or occ vertex"""
def fmt(t):
t = float(t)
t = round(t,Draft.precision())
return t
if isinstance(vec,tuple):
return tuple([fmt(v) for v in vec])
elif isinstance(vec,list):
return tuple([fmt(v) for v in vec])
elif hasattr(vec,"x") and hasattr(vec,"y") and hasattr(vec,"z"):
return (fmt(vec.x),fmt(vec.y),fmt(vec.z))
elif hasattr(vec,"X") and hasattr(vec,"Y") and hasattr(vec,"Z"):
return (fmt(vec.X),fmt(vec.Y),fmt(vec.Z))
def getValueAndDirection(vec):
"""getValueAndDirection(vec): returns a length and a tuple
representing a normalized vector from a tuple"""
pre = Draft.precision()
vec = getTuple(vec)
length = round(math.sqrt(vec[0]**2 + vec[1]**2 + vec[2]**2),pre)
ratio = 1/length
x = round(vec[0]*ratio,pre)
y = round(vec[1]*ratio,pre)
z = round(vec[2]*ratio,pre)
normal = (x,y,z)
return length,normal
def create(ifcdoc=None,ifcname=None,arguments=[]):
"""create(ifcdoc,ifcname,[arguments]):creates an entity
of the given name in the given document and optionally
gives it an ordered list of arguments"""
if hasattr(ifcw,"Entity"):
entity = ifcw.Entity(ifcname)
else:
entity = ifcw.entity_instance(ifcname)
if ifcdoc:
ifcdoc.add(entity)
# this is a temporary hack while ifcopenshell has no ref counting
holder.refs.append(entity)
if not isinstance(arguments,list):
arguments = [arguments]
for i in range(len(arguments)):
arg = arguments[i]
if isinstance(arg,tuple):
if len(arg) in [2,3]:
if hasattr(ifcw,"Doubles"):
arg = ifcw.Doubles(arg)
else:
arg = ifcw.doubles(arg)
entity.set_argument(i,arg)
return entity
class IfcWriter(object):
"""IfcWriter([filepath,name,owner,organization,application,version])
Creates an empty IFC document."""
def __init__(self,filepath="",name="",owner="",organization="",application="Python IFC exporter",version="0.0"):
if hasattr(ifcw,"IfcFile"):
self._fileobject = ifcw.IfcFile()
else:
self._fileobject = ifcw.file()
self._person = create(self._fileobject,"IfcPerson",[None,None,"",None,None,None,None,None])
self._org = create(self._fileobject,"IfcOrganization",[None,"",None,None,None])
pno = create(self._fileobject,"IfcPersonAndOrganization",[self._person,self._org,None])
app = create(self._fileobject,"IfcApplication",[self._org,version,application,uid()])
self._owner = create(self._fileobject,"IfcOwnerHistory",[pno,app,None,"ADDED",None,pno,app,now()])
axp = self.addPlacement(local=False)
dim0 = create(self._fileobject,"IfcDirection",getTuple((0,1,0)))
self._repcontext = create(self._fileobject,"IfcGeometricRepresentationContext",['Plan','Model',3,1.E-05,axp,dim0])
dim1 = create(self._fileobject,"IfcDimensionalExponents",[0,0,0,0,0,0,0])
dim2 = create(self._fileobject,"IfcSIUnit",[dim1,"LENGTHUNIT","MILLI","METRE"])
dim3 = create(self._fileobject,"IfcSIUnit",[dim1,"AREAUNIT",None,"SQUARE_METRE"])
dim4 = create(self._fileobject,"IfcSIUnit",[dim1,"VOLUMEUNIT",None,"CUBIC_METRE"])
dim6 = create(self._fileobject,"IfcSIUnit",[dim1,"PLANEANGLEUNIT",None,"RADIAN"])
dim7 = create(None,"IfcPlaneAngleMeasure",[1.745E-2])
dim8 = create(self._fileobject,"IfcMeasureWithUnit",[dim7,dim6])
dim9 = create(self._fileobject,"IfcConversionBasedUnit",[dim1,"PLANEANGLEUNIT","DEGREE",dim8])
units = create(self._fileobject,"IfcUnitAssignment",[[dim2,dim3,dim4,dim9]])
self.Project = create(self._fileobject,"IfcProject",[uid(),self._owner,None,None,None,None,None,[self._repcontext],units])
self.Site = None
self._storeyRelations = {}
self.BuildingProducts = []
self.Storeys = []
self.Buildings = []
self.FilePath = filepath
self.Owner = owner
self.Organization = organization
self.Name = name
def __repr__(self):
return "IFC document " + self.Name #+ " containing " + str(len(holder)) + " entities"
def __setattr__(self,key,value):
if value:
if key == "Owner":
self._person.set_argument(2,str(value))
elif key == "Organization":
self._org.set_argument(1,str(value))
elif key == "Name":
self.Project.set_argument(2,str(value))
self.__dict__.__setitem__(key,value)
def findByName(self,ifctype,name):
"finds an entity of a given ifctype by name"
objs = self._fileobject.by_type(ifctype)
for obj in objs:
if hasattr(obj,"get_argument_count"):
l = obj.get_argument_count()
else:
l = len(obj)
for i in range(l):
if obj.get_argument_name(i) == "Name":
if obj.get_argument(i) == name:
return obj
return None
def write(self,fp=None):
"writes the document to its file"
if fp:
path = fp
else:
path = self.FilePath
if path:
try:
self._fileobject.write(path)
if APPLYFIX:
print("IfcWriter: Applying fix...")
self._fix(path)
except Exception:
print("IfcWriter: Error writing to "+path)
else:
print("IfcWriter: Successfully written to "+path)
else:
print("IfcWriter: Error: File path is not defined, unable to save")
def _fix(self,path):
"hack to fix early bugs in ifcopenshell"
import os
if os.path.exists(path):
f = pyopen(path,"rb")
lines = []
for l in f.readlines():
if "(=IFC" in l:
# adding an ifc entity without ID adds an unwanted = sign
l = l.replace("(=IFC","(IFC")
elif "IFCSIUNIT" in l:
# no way to insert * character
l = l.replace("IFCSIUNIT(#12,","IFCSIUNIT(*,")
lines.append(l)
f.close()
f = pyopen(path,"wb")
for l in lines:
f.write(l)
f.close()
def union(self,solids):
"""union(solids): creates a boolean union between all the solids of the list"""
if len(solids) == 1:
return solids[0]
else:
s1 = solids.pop(0)
s2 = solids.pop(0)
base = create(self._fileobject,"IfcBooleanResult",["UNION",s1,s2])
for s in solids:
base = create(self._fileobject,"IfcBooleanResult",["UNION",base,s])
return base
def addPlacement(self,reference=None,origin=(0,0,0),xaxis=(1,0,0),zaxis=(0,0,1),local=True,flat=False):
"""addPlacement([reference,origin,xaxis,zaxis,local]): adds a placement. origin,
xaxis and zaxis can be either tuples or 3d vectors. If local is False, a global
placement is returned, otherwise a local one."""
if flat:
xvc = create(self._fileobject,"IfcDirection",getTuple(xaxis)[:2])
ovc = create(self._fileobject,"IfcCartesianPoint",getTuple(origin)[:2])
gpl = create(self._fileobject,"IfcAxis2Placement2D",[ovc,xvc])
else:
xvc = create(self._fileobject,"IfcDirection",getTuple(xaxis))
zvc = create(self._fileobject,"IfcDirection",getTuple(zaxis))
ovc = create(self._fileobject,"IfcCartesianPoint",getTuple(origin))
gpl = create(self._fileobject,"IfcAxis2Placement3D",[ovc,zvc,xvc])
if local:
lpl = create(self._fileobject,"IfcLocalPlacement",[reference,gpl])
return lpl
else:
return gpl
def addSite(self,placement=None,name="Site",description=None,latitude=None,longitude=None,elevation=None,landtitlenumber=None,address=None):
"""makeSite(ifcdoc,project,owner,[placement,name,description]): creates a site
in the given ifc document"""
if self.Site:
return
if not placement:
placement = self.addPlacement()
self.Site = create(self._fileobject,"IfcSite",[uid(),self._owner,str(name),description,None,placement,None,None,"ELEMENT",latitude,longitude,elevation,landtitlenumber,address])
self._relate(self.Project,self.Site)
def addBuilding(self,placement=None,name="Default building",description=None):
"""addBuilding([placement,name,description]): adds a building"""
if not placement:
placement = self.addPlacement()
if not self.Site:
self.addSite()
bdg = create(self._fileobject,"IfcBuilding",[uid(),self._owner,str(name),description,None,placement,None,None,"ELEMENT",None,None,None])
self._relate(self.Site,bdg)
self.Buildings.append(bdg)
return bdg
def addStorey(self,building=None,placement=None,name="Default storey",description=None):
"""addStorey([building,placement,name,description]): adds a storey"""
if not placement:
placement = self.addPlacement()
sto = create(self._fileobject,"IfcBuildingStorey",[uid(),self._owner,str(name),description,None,placement,None,None,"ELEMENT",None])
if not building:
if self.Buildings:
building = self.Buildings[0]
else:
building = self.addBuilding()
self._relate(building,sto)
self.Storeys.append(sto)
return sto
def addGroup(self,entities,name="Default group",description=None):
"""addGroup(entities,[name,description]): adds a group with the given entities"""
if not isinstance(entities,list):
entities = [entities]
gro = create(self._fileobject,"IfcGroup",[uid(),self._owner,str(name),description,None])
rel = create(self._fileobject,"IfcRelAssignsToGroup",[uid(),self._owner,str(name)+"-relation",None,entities,"PRODUCT",gro])
return gro
def _relate(self,container,entities):
"""relate(container,entities): relates the given entities to the given
container"""
if not isinstance(entities,list):
entities = [entities]
if container.is_a("IfcBuildingStorey"):
sid = container.get_argument(0)
if sid in self._storeyRelations:
prods = self._storeyRelations[sid].get_argument(4)
self._storeyRelations[sid].set_argument(4,prods+entities)
else:
rel = create(self._fileobject,"IfcRelContainedInSpatialStructure",[uid(),self._owner,'StoreyLink','',entities,container])
self._storeyRelations[sid] = rel
else:
if entities[0].is_a("IfcOpeningElement"):
create(self._fileobject,"IfcRelVoidsElement",[uid(),self._owner,'Opening','',container,entities[0]])
else:
create(self._fileobject,"IfcRelAggregates",[uid(),self._owner,'Relationship','',container,entities])
def addProduct(self,elttype,shapes,storey=None,placement=None,name="Unnamed element",description=None,extra=None):
"""addProduct(elttype,representations,[storey,placement,name,description,extra]): creates an element of the given type
(IfcWall, IfcBeam, etc...) with the given attributes, plus the given extra attributes."""
elttype = str(elttype)
if not extra:
extra = []
if not description:
description = None
if not placement:
placement = self.addPlacement()
representations = self.addRepresentations(shapes)
prd = create(self._fileobject,"IfcProductDefinitionShape",[None,None,representations])
try:
elt = create(self._fileobject,elttype,[uid(),self._owner,name,description,None,placement,prd,None]+extra)
except Exception:
print("unable to create an ",elttype, " with attributes: ",[uid(),self._owner,str(name),description,None,placement,prd,None]+extra)
try:
if hasattr(ifcw,"Entity"):
o = ifcw.Entity(elttype)
else:
o = ifcw.entity_instance(elttype)
print("supported attributes are: ")
print(getPropertyNames(o))
except Exception:
print("unable to create an element of type '"+elttype+"'")
print("WARNING: skipping object '"+name+"' of type "+elttype)
return None
self.BuildingProducts.append(elt)
if not storey:
if self.Storeys:
storey = self.Storeys[0]
else:
storey = self.addStorey()
self._relate(storey,elt)
return elt
def addRepresentations(self,shapes):
"""addRepresentations(shapes,[solidType]): creates a representation from the given shape"""
solidType = "Brep"
if not isinstance(shapes,list):
if shapes.is_a("IfcExtrudedAreaSolid"):
solidType = "SweptSolid"
shapes = [shapes]
reps = [create(self._fileobject,"IfcShapeRepresentation",[self._repcontext,'Body',solidType,[shape for shape in shapes]])]
return reps
def addColor(self,rgb,rep):
"""addColor(rgb,rep): adds a RGB color definition tuple (float,float,float) to a given representation"""
col = create(self._fileobject,"IfcColourRgb",[None]+list(rgb))
ssr = create(self._fileobject,"IfcSurfaceStyleRendering",[col,None,None,None,None,None,None,None,"FLAT"])
iss = create(self._fileobject,"IfcSurfaceStyle",[None,"BOTH",[ssr]])
psa = create(self._fileobject,"IfcPresentationStyleAssignment",[[iss]])
isi = create(self._fileobject,"IfcStyledItem",[rep,[psa],None])
return isi
def addProfile(self,ifctype,data,curvetype="AREA"):
"""addProfile(ifctype,data): creates a 2D profile of the given type, with the given
data as arguments, which must be formatted correctly according to the type."""
# Expected ifctype and corresponding data formatting:
# IfcPolyLine: [ (0,0,0), (2,1,0), (3,3,0) ] # list of points
# IfcCompositeCurve: [ ["line",[ (0,0,0), (2,1,0) ] ], # list of points
# ["arc", (0,0,0), 15, [0.76, 3.1416], True, "PARAMETER"] # center, radius, [trim1, trim2], SameSense, trimtype
# ... ]
# IfcCircleProfileDef: [ (0,0,0), 15 ] # center, radius
# IfcEllipseProfileDef: [ (0,0,0), 15, 7 ] # center, radiusX, radiusY
if ifctype == "IfcPolyline":
pts = [create(self._fileobject,"IfcCartesianPoint",getTuple(p)[:2]) for p in data]
pol = create(self._fileobject,"IfcPolyline",[pts])
profile = create(self._fileobject,"IfcArbitraryClosedProfileDef",[curvetype,None,pol])
elif ifctype == "IfcCompositeCurve":
curves = []
for curve in data:
cur = None
if curve[0] == "line":
pts = [create(self._fileobject,"IfcCartesianPoint",getTuple(p)[:2]) for p in curve[1]]
cur = create(self._fileobject,"IfcPolyline",[pts])
elif curve[0] == "arc":
pla = self.addPlacement(origin=curve[1],local=False,flat=True)
cir = create(self._fileobject,"IfcCircle",[pla,curve[2]])
if curve[5] == "CARTESIAN":
# BUGGY! Impossible to add cartesian points as "embedded" entity
trim1 = create(None,"IfcCartesianPoint",getTuple(curve[3][0])[:2])
trim2 = create(None,"IfcCartesianPoint",getTuple(curve[3][1])[:2])
else:
trim1 = create(None,"IfcParameterValue",[curve[3][0]])
trim2 = create(None,"IfcParameterValue",[curve[3][1]])
cur = create(self._fileobject,"IfcTrimmedCurve",[cir,[trim1],[trim2],curve[4],curve[5]])
if cur:
seg = create(self._fileobject,"IfcCompositeCurveSegment",["CONTINUOUS",True,cur])
curves.append(seg)
ccu = create(self._fileobject,"IfcCompositeCurve",[curves,False])
profile = create(self._fileobject,"IfcArbitraryClosedProfileDef",[curvetype,None,ccu])
else:
if not isinstance(data,list):
data = [data]
p = self.addPlacement(local=False,flat=True)
profile = create(self._fileobject,ifctype,[curvetype,None,p]+data)
return profile
def addExtrusion(self,profile,extrusion,placement=None):
"""addExtrusion(profile,extrusion,[placement]): makes an
extrusion of the given polyline with the given extrusion vector"""
if not placement:
placement = self.addPlacement(local=False)
value,norm = getValueAndDirection(extrusion)
edir = create(self._fileobject,"IfcDirection",[norm])
solid = create(self._fileobject,"IfcExtrudedAreaSolid",[profile,placement,edir,value])
return solid
def addExtrudedPolyline(self,points,extrusion,placement=None,color=None):
"""addExtrudedPolyline(points,extrusion,[placement,color]): makes an extruded polyline
from the given points and the given extrusion vector"""
pol = self.addProfile("IfcPolyline",points)
if not placement:
placement = self.addPlacement(local=False)
exp = self.addExtrusion(pol,extrusion,placement)
if color:
self.addColor(color,exp)
return exp
def addExtrudedCircle(self,data,extrusion,placement=None,color=None):
"""addExtrudedCircle(data,extrusion,[placement,color]): makes an extruded circle
from the given data (center,radius) and the given extrusion vector"""
cir = self.addProfile("IfcCircleProfileDef",data[1])
if not placement:
placement = self.addPlacement(origin=data[0],local=False)
exp = self.addExtrusion(cir,extrusion,placement)
if color:
self.addColor(color,exp)
return exp
def addExtrudedEllipse(self,data,extrusion,placement=None,color=None):
"""addExtrudedEllipse(data,extrusion,[placement,color]): makes an extruded ellipse
from the given data (center,radiusx,radiusy) and the given extrusion vector"""
cir = self.addProfile("IfcEllipseProfileDef",[data[1],data[2]])
if not placement:
placement = self.addPlacement(origin=data[0],local=False)
exp = self.addExtrusion(cir,extrusion,placement)
if color:
self.addColor(color,exp)
return exp
def addExtrudedCompositeCurve(self,curves,extrusion,placement=None,color=None):
"""addExtrudedCompositeCurve(curves,extrusion,[placement,color]): makes an extruded polyline
from the given curves and the given extrusion vector"""
if not placement:
placement = self.addPlacement(local=False)
ccu = self.addProfile("IfcCompositeCurve",curves)
exp = self.addExtrusion(ccu,extrusion,placement)
if color:
self.addColor(color,exp)
return exp
def addFace(self,face):
"""addFace(face): creates a face from the given face data (a list of lists of points).
The first is the outer wire, the next are optional inner wires. They must be reversed in order"""
ifb = []
idx = 0
for f in face:
pts = []
for p in f:
#print(p)
if p in self.fpoints:
#print(self.fpoints.index(p))
#print(self.frefs)
pts.append(self.frefs[self.fpoints.index(p)])
else:
pt = create(self._fileobject,"IfcCartesianPoint",getTuple(p))
pts.append(pt)
self.fpoints.append(p)
self.frefs.append(pt)
#print(pts)
loop = create(self._fileobject,"IfcPolyLoop",[pts])
if idx == 0:
fb = create(self._fileobject,"IfcFaceOuterBound",[loop,True])
else:
fb = create(self._fileobject,"IfcFaceBound",[loop,True])
ifb.append(fb)
idx += 1
iface = create(self._fileobject,"IfcFace",[ifb])
return iface
def addFacetedBrep(self,faces,color=None):
"""addFacetedBrep(self,faces,[color]): creates a faceted brep object from the given list
of faces (each face is a list of lists of points, inner wires are reversed)"""
self.fpoints = []
self.frefs = []
#print("adding ",len(faces)," faces")
#print(faces)
ifaces = [self.addFace(face) for face in faces]
sh = create(self._fileobject,"IfcClosedShell",[ifaces])
brp = create(self._fileobject,"IfcFacetedBrep",[sh])
if color:
self.addColor(color,brp)
return brp
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