656 lines
25 KiB
Python
656 lines
25 KiB
Python
#***************************************************************************
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#* *
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#* Copyright (c) 2011 *
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#* Yorik van Havre <yorik@uncreated.net> *
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#* *
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#* This program is free software; you can redistribute it and/or modify *
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#* it under the terms of the GNU Lesser General Public License (LGPL) *
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#* as published by the Free Software Foundation; either version 2 of *
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#* the License, or (at your option) any later version. *
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#* for detail see the LICENCE text file. *
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#* *
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#* This program is distributed in the hope that it will be useful, *
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#* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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#* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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#* GNU Library General Public License for more details. *
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#* *
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#* You should have received a copy of the GNU Library General Public *
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#* License along with this program; if not, write to the Free Software *
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#* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
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#* USA *
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#* *
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#***************************************************************************
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import ifcReader, FreeCAD, Arch, Draft, os, sys, time, Part, DraftVecUtils
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from DraftTools import translate
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__title__="FreeCAD IFC importer"
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__author__ = "Yorik van Havre"
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__url__ = "http://free-cad.sourceforge.net"
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# config
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subtractiveTypes = ["IfcOpeningElement"] # elements that must be subtracted from their parents
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SCHEMA = "http://www.steptools.com/support/stdev_docs/express/ifc2x3/ifc2x3_tc1.exp"
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# end config
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if open.__module__ == '__builtin__':
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pyopen = open # because we'll redefine open below
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def open(filename):
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"called when freecad opens a file"
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docname = os.path.splitext(os.path.basename(filename))[0]
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doc = FreeCAD.newDocument(docname)
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doc.Label = decode(docname)
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FreeCAD.ActiveDocument = doc
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getConfig()
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read(filename)
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return doc
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def insert(filename,docname):
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"called when freecad wants to import a file"
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try:
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doc = FreeCAD.getDocument(docname)
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except:
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doc = FreeCAD.newDocument(docname)
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FreeCAD.ActiveDocument = doc
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getConfig()
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read(filename)
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return doc
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def getConfig():
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"Gets Arch IFC import preferences"
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global CREATE_IFC_GROUPS, IMPORT_IFC_FURNITURE, DEBUG, SKIP, PREFIX_NUMBERS, FORCE_PYTHON_PARSER, SEPARATE_OPENINGS
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CREATE_IFC_GROUPS = False
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IMPORT_IFC_FURNITURE = False
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DEBUG = False
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SKIP = ["IfcSpace","IfcBuildingElementProxy","IfcFlowTerminal"]
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PREFIX_NUMBERS = False
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FORCE_PYTHON_PARSER = False
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SEPARATE_OPENINGS = False
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p = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Arch")
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CREATE_IFC_GROUPS = p.GetBool("createIfcGroups")
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IMPORT_IFC_FURNITURE = p.GetBool("importIfcFurniture")
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FORCE_PYTHON_PARSER = p.GetBool("forceIfcPythonParser")
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DEBUG = p.GetBool("ifcDebug")
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SEPARATE_OPENINGS = p.GetBool("ifcSeparateOpenings")
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PREFIX_NUMBERS = p.GetBool("ifcPrefixNumbers")
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skiplist = p.GetString("ifcSkip")
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if skiplist:
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SKIP = skiplist.split(",")
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def getIfcOpenShell():
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"locates and imports ifcopenshell"
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try:
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global IfcImport
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import IfcImport
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except:
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FreeCAD.Console.PrintMessage(str(translate("Arch","Couldn't locate IfcOpenShell\n")))
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return False
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else:
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return True
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def read(filename):
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"Parses an IFC file"
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# parsing the IFC file
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t1 = time.time()
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num_lines = sum(1 for line in pyopen(filename))
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if getIfcOpenShell() and not FORCE_PYTHON_PARSER:
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# use the IfcOpenShell parser
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# preparing IfcOpenShell
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if DEBUG: global ifcObjects,ifcParents
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ifcObjects = {} # a table to relate ifc id with freecad object
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ifcParents = {} # a table to relate ifc id with parent id
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if not IMPORT_IFC_FURNITURE:
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SKIP.append("IfcFurnishingElement")
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if hasattr(IfcImport,"DISABLE_OPENING_SUBTRACTIONS") and SEPARATE_OPENINGS:
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IfcImport.Settings(IfcImport.DISABLE_OPENING_SUBTRACTIONS,True)
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else:
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SKIP.append("IfcOpeningElement")
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useShapes = False
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if hasattr(IfcImport,"USE_BREP_DATA"):
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IfcImport.Settings(IfcImport.USE_BREP_DATA,True)
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useShapes = True
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else:
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if DEBUG: print "Warning: IfcOpenShell version very old, unable to handle Brep data"
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# processing geometry
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if IfcImport.Init(filename):
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while True:
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obj = IfcImport.Get()
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if DEBUG: print "["+str(int((float(obj.id)/num_lines)*100))+"%] parsing ",obj.id,": ",obj.name," of type ",obj.type
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meshdata = []
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# retrieving name
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n = getName(obj)
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# skip types
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if obj.type in SKIP:
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if DEBUG: print "skipping because type is in skip list"
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nobj = None
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else:
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# build shape
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shape = None
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if useShapes:
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shape = getShape(obj)
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# walls
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if obj.type in ["IfcWallStandardCase","IfcWall"]:
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nobj = makeWall(obj.id,shape,n)
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# windows
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elif obj.type in ["IfcWindow","IfcDoor"]:
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nobj = makeWindow(obj.id,shape,n)
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# structs
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elif obj.type in ["IfcBeam","IfcColumn","IfcSlab","IfcFooting"]:
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nobj = makeStructure(obj.id,shape,n)
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# roofs
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elif obj.type in ["IfcRoof"]:
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nobj = makeRoof(obj.id,shape,n)
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# furniture
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elif obj.type in ["IfcFurnishingElement"]:
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nobj = FreeCAD.ActiveDocument.addObject("Part::Feature",n)
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nobj.Shape = shape
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# sites
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elif obj.type in ["IfcSite"]:
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nobj = makeSite(obj.id,shape,n)
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elif shape:
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# treat as dumb parts
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#if DEBUG: print "Fixme: Shape-containing object not handled: ",obj.id, " ", obj.type
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nobj = FreeCAD.ActiveDocument.addObject("Part::Feature",n)
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nobj.Shape = shape
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else:
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# treat as meshes
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if DEBUG: print "Warning: Object without shape: ",obj.id, " ", obj.type
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me,pl = getMesh(obj)
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nobj = FreeCAD.ActiveDocument.addObject("Mesh::Feature",n)
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nobj.Mesh = me
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nobj.Placement = pl
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# registering object number and parent
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if obj.parent_id > 0:
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ifcParents[obj.id] = [obj.parent_id,not (obj.type in subtractiveTypes)]
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ifcObjects[obj.id] = nobj
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if not IfcImport.Next():
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break
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# processing non-geometry and relationships
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parents_temp = dict(ifcParents)
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import ArchCommands
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while parents_temp:
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id, c = parents_temp.popitem()
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parent_id = c[0]
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additive = c[1]
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if (id <= 0) or (parent_id <= 0):
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# root dummy object
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parent = None
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elif parent_id in ifcObjects:
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parent = ifcObjects[parent_id]
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# check if parent is a subtraction, if yes parent to grandparent
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if parent_id in ifcParents:
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if ifcParents[parent_id][1] == False:
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grandparent_id = ifcParents[parent_id][0]
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if grandparent_id in ifcObjects:
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parent = ifcObjects[grandparent_id]
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else:
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# creating parent if needed
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parent_ifcobj = IfcImport.GetObject(parent_id)
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if DEBUG: print "["+str(int((float(parent_ifcobj.id)/num_lines)*100))+"%] parsing ",parent_ifcobj.id,": ",parent_ifcobj.name," of type ",parent_ifcobj.type
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n = getName(parent_ifcobj)
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if parent_ifcobj.id <= 0:
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parent = None
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elif parent_ifcobj.type == "IfcBuildingStorey":
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parent = Arch.makeFloor(name=n)
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elif parent_ifcobj.type == "IfcBuilding":
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parent = Arch.makeBuilding(name=n)
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elif parent_ifcobj.type == "IfcSite":
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parent = Arch.makeSite(name=n)
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elif parent_ifcobj.type == "IfcWindow":
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parent = Arch.makeWindow(name=n)
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else:
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if DEBUG: print "Fixme: skipping unhandled parent: ", parent_ifcobj.id, " ", parent_ifcobj.type
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parent = None
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# registering object number and parent
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if parent_ifcobj.parent_id > 0:
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ifcParents[parent_ifcobj.id] = [parent_ifcobj.parent_id,True]
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parents_temp[parent_ifcobj.id] = [parent_ifcobj.parent_id,True]
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if parent and (not parent_ifcobj.id in ifcObjects):
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ifcObjects[parent_ifcobj.id] = parent
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# attributing parent
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if parent and (id in ifcObjects):
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if ifcObjects[id]:
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if additive:
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ArchCommands.addComponents(ifcObjects[id],parent)
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else:
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ArchCommands.removeComponents(ifcObjects[id],parent)
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IfcImport.CleanUp()
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else:
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# use only the internal python parser
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FreeCAD.Console.PrintWarning(str(translate("Arch","IfcOpenShell not found, falling back on internal parser.\n")))
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schema=getSchema()
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if schema:
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if DEBUG: global ifc
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if DEBUG: print "opening",filename,"..."
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ifc = ifcReader.IfcDocument(filename,schema=schema,debug=DEBUG)
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else:
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FreeCAD.Console.PrintWarning(str(translate("Arch","IFC Schema not found, IFC import disabled.\n")))
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return None
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t2 = time.time()
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if DEBUG: print "Successfully loaded",ifc,"in %s s" % ((t2-t1))
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# getting walls
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for w in ifc.getEnt("IfcWallStandardCase"):
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nobj = makeWall(w)
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# getting windows and doors
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for w in (ifc.getEnt("IfcWindow") + ifc.getEnt("IfcDoor")):
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nobj = makeWindow(w)
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# getting structs
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for w in (ifc.getEnt("IfcSlab") + ifc.getEnt("IfcBeam") + ifc.getEnt("IfcColumn") \
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+ ifc.getEnt("IfcFooting")):
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nobj = makeStructure(w)
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# getting floors
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for f in ifc.getEnt("IfcBuildingStorey"):
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group(f,ifc,"Floor")
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# getting buildings
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for b in ifc.getEnt("IfcBuilding"):
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group(b,ifc,"Building")
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# getting sites
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for s in ifc.getEnt("IfcSite"):
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group(s,ifc,"Site")
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if DEBUG: print "done parsing. Recomputing..."
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FreeCAD.ActiveDocument.recompute()
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t3 = time.time()
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if DEBUG: print "done processing IFC file in %s s" % ((t3-t1))
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return None
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def getName(ifcobj):
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"Get a clean name from an ifc object"
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n = ifcobj.name
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if not n:
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n = ifcobj.type
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if PREFIX_NUMBERS:
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n = "ID"+str(ifcobj.id)+" "+n
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#for c in ",.!?;:":
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# n = n.replace(c,"_")
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return n
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def makeWall(entity,shape=None,name="Wall"):
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"makes a wall in the freecad document"
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try:
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if shape:
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# use ifcopenshell
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body = FreeCAD.ActiveDocument.addObject("Part::Feature","WallBody")
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body.Shape = shape
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wall = Arch.makeWall(body,name=name)
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wall.Label = name
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if DEBUG: print "made wall object ",entity,":",wall
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return wall
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# use internal parser
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if DEBUG: print "=====> making wall",entity.id
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placement = wall = wire = body = width = height = None
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placement = getPlacement(entity.ObjectPlacement)
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if DEBUG: print "got wall placement",entity.id,":",placement
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width = entity.getProperty("Width")
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height = entity.getProperty("Height")
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if width and height:
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if DEBUG: print "got width, height ",entity.id,":",width,"/",height
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for r in entity.Representation.Representations:
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if r.RepresentationIdentifier == "Axis":
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wire = getWire(r.Items,placement)
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wall = Arch.makeWall(wire,width,height,align="Center",name="Wall"+str(entity.id))
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else:
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if DEBUG: print "no height or width properties found..."
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for r in entity.Representation.Representations:
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if r.RepresentationIdentifier == "Body":
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for b in r.Items:
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if b.type == "IFCEXTRUDEDAREASOLID":
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norm = getVector(b.ExtrudedDirection)
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norm.normalize()
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wire = getWire(b.SweptArea,placement)
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wall = Arch.makeWall(wire,width=0,height=b.Depth,name="Wall"+str(entity.id))
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wall.Normal = norm
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if wall:
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if DEBUG: print "made wall object ",entity.id,":",wall
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return wall
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if DEBUG: print "error: skipping wall",entity.id
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return None
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except:
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if DEBUG: print "error: skipping wall",entity.id
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return None
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def makeWindow(entity,shape=None,name="Window"):
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"makes a window in the freecad document"
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try:
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if shape:
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# use ifcopenshell
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window = Arch.makeWindow(name=name)
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window.Shape = shape
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window.Label = name
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if DEBUG: print "made window object ",entity,":",window
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return window
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# use internal parser
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if DEBUG: print "=====> making window",entity.id
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placement = window = wire = body = width = height = None
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placement = getPlacement(entity.ObjectPlacement)
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if DEBUG: print "got window placement",entity.id,":",placement
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width = entity.getProperty("Width")
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height = entity.getProperty("Height")
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for r in entity.Representation.Representations:
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if r.RepresentationIdentifier == "Body":
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for b in r.Items:
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if b.type == "IFCEXTRUDEDAREASOLID":
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wire = getWire(b.SweptArea,placement)
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window = Arch.makeWindow(wire,width=b.Depth,name=objtype+str(entity.id))
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if window:
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if DEBUG: print "made window object ",entity.id,":",window
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return window
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if DEBUG: print "error: skipping window",entity.id
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return None
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except:
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if DEBUG: print "error: skipping window",entity.id
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return None
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def makeStructure(entity,shape=None,name="Structure"):
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"makes a structure in the freecad document"
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try:
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if shape:
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# use ifcopenshell
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sh = FreeCAD.ActiveDocument.addObject("Part::Feature","StructureBody")
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sh.Shape = shape
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structure = Arch.makeStructure(sh,name=name)
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structure.Label = name
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if DEBUG: print "made structure object ",entity,":",structure
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return structure
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# use internal parser
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if DEBUG: print "=====> making struct",entity.id
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placement = structure = wire = body = width = height = None
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placement = getPlacement(entity.ObjectPlacement)
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if DEBUG: print "got window placement",entity.id,":",placement
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width = entity.getProperty("Width")
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height = entity.getProperty("Height")
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for r in entity.Representation.Representations:
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if r.RepresentationIdentifier == "Body":
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for b in r.Items:
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if b.type == "IFCEXTRUDEDAREASOLID":
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wire = getWire(b.SweptArea,placement)
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structure = Arch.makeStructure(wire,height=b.Depth,name=objtype+str(entity.id))
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if structure:
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if DEBUG: print "made structure object ",entity.id,":",structure
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return structure
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if DEBUG: print "error: skipping structure",entity.id
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return None
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except:
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if DEBUG: print "error: skipping structure",entity.id
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return None
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def makeSite(entity,shape=None,name="Site"):
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"makes a site in the freecad document"
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try:
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if shape:
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# use ifcopenshell
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site = Arch.makeSite(name=name)
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site.Label = name
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body = FreeCAD.ActiveDocument.addObject("Part::Feature",name+"_body")
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body.Shape = shape
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site.Terrain = body
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if DEBUG: print "made site object ",entity,":",site
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return site
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except:
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return None
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def makeRoof(entity,shape=None,name="Roof"):
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"makes a roof in the freecad document"
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try:
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if shape:
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# use ifcopenshell
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roof = Arch.makeRoof(name=name)
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roof.Label = name
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roof.Shape = shape
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if DEBUG: print "made roof object ",entity,":",roof
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return roof
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except:
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return None
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# geometry helpers ###################################################################
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def getMesh(obj):
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"gets mesh and placement from an IfcOpenShell object"
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import Mesh
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f = obj.mesh.faces
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v = obj.mesh.verts
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for i in range(0, len(f), 3):
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face = []
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for j in range(3):
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vi = f[i+j]*3
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face.append([v[vi],v[vi+1],v[vi+2]])
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meshdata.append(face)
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me = Mesh.Mesh(meshdata)
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# get transformation matrix
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m = obj.matrix
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mat = FreeCAD.Matrix(m[0], m[3], m[6], m[9],
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m[1], m[4], m[7], m[10],
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m[2], m[5], m[8], m[11],
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0, 0, 0, 1)
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pl = FreeCAD.Placement(mat)
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return me,pl
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def getShape(obj):
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"gets a shape from an IfcOpenShell object"
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import StringIO,Part
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sh=Part.Shape()
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sh.importBrep(StringIO.StringIO(obj.mesh.brep_data))
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if not sh.Solids:
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# try to extract a solid shape
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if sh.Faces:
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try:
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if DEBUG: print "Malformed solid. Attempting to fix..."
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shell = Part.makeShell(sh.Faces)
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if shell:
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solid = Part.makeSolid(shell)
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if solid:
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sh = solid
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except:
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if DEBUG: print "failed to retrieve solid from object ",obj.id
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else:
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if DEBUG: print "object ", obj.id, " doesn't contain any face"
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m = obj.matrix
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mat = FreeCAD.Matrix(m[0], m[3], m[6], m[9],
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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
|
|
return sh
|
|
|
|
# below is only used by the internal parser #########################################
|
|
|
|
def decode(name):
|
|
"decodes encoded strings"
|
|
try:
|
|
decodedName = (name.decode("utf8"))
|
|
except UnicodeDecodeError:
|
|
try:
|
|
decodedName = (name.decode("latin1"))
|
|
except UnicodeDecodeError:
|
|
FreeCAD.Console.PrintError(str(translate("Arch", "Error: Couldn't determine character encoding\n")))
|
|
decodedName = name
|
|
return decodedName
|
|
|
|
def getSchema():
|
|
"retrieves the express schema"
|
|
p = None
|
|
p = os.path.join(FreeCAD.ConfigGet("UserAppData"),SCHEMA.split('/')[-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 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: print "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:
|
|
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 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)
|
|
|
|
def getPlacement(entity):
|
|
"returns a placement from the given entity"
|
|
# only used by internal parser
|
|
if DEBUG: print "getting placement ",entity
|
|
if not entity: return None
|
|
pl = None
|
|
if entity.type == "IFCAXIS2PLACEMENT3D":
|
|
x = getVector(entity.RefDirection)
|
|
z = getVector(entity.Axis)
|
|
y = z.cross(x)
|
|
loc = getVector(entity.Location)
|
|
m = DraftVecUtils.getPlaneRotation(x,y,z)
|
|
pl = FreeCAD.Placement(m)
|
|
pl.move(loc)
|
|
elif entity.type == "IFCLOCALPLACEMENT":
|
|
pl = getPlacement(entity.PlacementRelTo)
|
|
relpl = getPlacement(entity.RelativePlacement)
|
|
if pl and relpl:
|
|
pl = relpl.multiply(pl)
|
|
elif relpl:
|
|
pl = relpl
|
|
elif entity.type == "IFCCARTESIANPOINT":
|
|
loc = getVector(entity)
|
|
pl = FreeCAD.Placement()
|
|
pl.move(loc)
|
|
if DEBUG: print "made placement for",entity.id,":",pl
|
|
return pl
|
|
|
|
def getVector(entity):
|
|
"returns a vector from the given entity"
|
|
# only used by internal parser
|
|
if DEBUG: print "getting point from",entity
|
|
if entity.type == "IFCDIRECTION":
|
|
if len(entity.DirectionRatios) == 3:
|
|
return FreeCAD.Vector(tuple(entity.DirectionRatios))
|
|
else:
|
|
return FreeCAD.Vector(tuple(entity.DirectionRatios+[0]))
|
|
elif entity.type == "IFCCARTESIANPOINT":
|
|
if len(entity.Coordinates) == 3:
|
|
return FreeCAD.Vector(tuple(entity.Coordinates))
|
|
else:
|
|
return FreeCAD.Vector(tuple(entity.Coordinates+[0]))
|
|
return None
|