Arch: misc improvements to IFC importer
* Fixed progress bar * Import can now be aborted by pressing ESC * No intermediary Extrusion object is created for Walls and Structures * When a base profile has only linear edges, create a draft wire instead of face * Fixed placement bug in shared profiles
This commit is contained in:
Yorik van Havre
@@ -721,10 +721,10 @@ class _Roof(ArchComponent.Component):
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rn += 1
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if obj.RidgeLength.Value != rl:
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obj.RidgeLength = rl
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print(str(rn)+" ridge edges in roof "+obj.Name)
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#print(str(rn)+" ridge edges in roof "+obj.Name)
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if obj.BorderLength.Value != bl:
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obj.BorderLength = bl
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print(str(bn)+" border edges in roof "+obj.Name)
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#print(str(bn)+" border edges in roof "+obj.Name)
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ArchComponent.Component.computeAreas(self,obj)
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@@ -35,8 +35,8 @@ import os,time,tempfile,uuid,FreeCAD,Part,Draft,Arch,math,DraftVecUtils
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#
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# This module provides tools to import and export IFC files.
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DEBUG = False
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ADDDEFAULTSTOREY = True
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DEBUG = False # Set to True to see debug messages. Otherwise, totally silent
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ADDDEFAULTSTOREY = False # If True, an exported file will ALWAYS have at least one storey
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if open.__module__ in ['__builtin__','io']:
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pyopen = open # because we'll redefine open below
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@@ -79,6 +79,7 @@ translationtable = { "Foundation":"Footing",
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"Pipe Fitting":"PipeFitting"
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}
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# the base IFC template for export
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ifctemplate = """ISO-10303-21;
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HEADER;
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FILE_DESCRIPTION(('ViewDefinition [CoordinationView]'),'2;1');
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@@ -112,6 +113,9 @@ END-ISO-10303-21;
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def decode(filename,utf=False):
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"turns unicodes into strings"
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if isinstance(filename,unicode):
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# workaround since ifcopenshell currently can't handle unicode filenames
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if utf:
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@@ -124,6 +128,9 @@ def decode(filename,utf=False):
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def doubleClickTree(item,column):
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"a double-click callback function for the IFC explorer tool"
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txt = item.text(column)
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if "Entity #" in txt:
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eid = txt.split("#")[1].split(":")[0]
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@@ -134,7 +141,9 @@ def doubleClickTree(item,column):
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def getPreferences():
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"""retrieves IFC preferences"""
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global DEBUG, PREFIX_NUMBERS, SKIP, SEPARATE_OPENINGS
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global ROOT_ELEMENT, GET_EXTRUSIONS, MERGE_MATERIALS
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global MERGE_MODE_ARCH, MERGE_MODE_STRUCT, CREATE_CLONES
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@@ -170,6 +179,7 @@ def getPreferences():
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def explore(filename=None):
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"""explore([filename]): opens a dialog showing
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the contents of an IFC file. If no filename is given, a dialog will
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pop up to choose a file."""
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@@ -196,6 +206,7 @@ def explore(filename=None):
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print("File not found")
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return
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# draw the widget contents
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ifc = ifcopenshell.open(filename)
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global tree
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tree = QtGui.QTreeWidget()
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@@ -328,6 +339,7 @@ def explore(filename=None):
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def open(filename,skip=[],only=[],root=None):
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"opens an IFC file in a new document"
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docname = os.path.splitext(os.path.basename(filename))[0]
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@@ -339,6 +351,7 @@ def open(filename,skip=[],only=[],root=None):
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def insert(filename,docname,skip=[],only=[],root=None):
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"""insert(filename,docname,skip=[],only=[],root=None): imports the contents of an IFC file.
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skip can contain a list of ids of objects to be skipped, only can restrict the import to
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certain object ids (will also get their children) and root can be used to
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@@ -362,13 +375,16 @@ def insert(filename,docname,skip=[],only=[],root=None):
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if DEBUG: print("done.")
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global ROOT_ELEMENT, parametrics
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if root:
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ROOT_ELEMENT = root
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#global ifcfile # keeping global for debugging purposes
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filename = decode(filename,utf=True)
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ifcfile = ifcopenshell.open(filename)
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# set default ifcopenshell optionss to work in brep mode
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from ifcopenshell import geom
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settings = ifcopenshell.geom.settings()
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settings.set(settings.USE_BREP_DATA,True)
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@@ -378,6 +394,8 @@ def insert(filename,docname,skip=[],only=[],root=None):
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settings.set(settings.DISABLE_OPENING_SUBTRACTIONS,True)
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if SPLIT_LAYERS and hasattr(settings,"APPLY_LAYERSETS"):
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settings.set(settings.APPLY_LAYERSETS,True)
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# gather easy entity types
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sites = ifcfile.by_type("IfcSite")
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buildings = ifcfile.by_type("IfcBuilding")
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floors = ifcfile.by_type("IfcBuildingStorey")
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@@ -385,7 +403,6 @@ def insert(filename,docname,skip=[],only=[],root=None):
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openings = ifcfile.by_type("IfcOpeningElement")
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annotations = ifcfile.by_type("IfcAnnotation")
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materials = ifcfile.by_type("IfcMaterial")
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profiles = {} # to store reused extrusion profiles {ifcid:fcobj,...}
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if DEBUG: print("Building relationships table...",end="")
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@@ -403,6 +420,8 @@ def insert(filename,docname,skip=[],only=[],root=None):
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mattable = {} # { objid:matid }
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sharedobjects = {} # { representationmapid:object }
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parametrics = [] # a list of imported objects whose parametric relationships need processing after all objects have been created
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profiles = {} # to store reused extrusion profiles {ifcid:fcobj,...}
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for r in ifcfile.by_type("IfcRelContainedInSpatialStructure"):
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additions.setdefault(r.RelatingStructure.id(),[]).extend([e.id() for e in r.RelatedElements])
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for r in ifcfile.by_type("IfcRelAggregates"):
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@@ -471,7 +490,8 @@ def insert(filename,docname,skip=[],only=[],root=None):
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tp.append(product)
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products = tp
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if only: # only import a list of IDs and their children
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# only import a list of IDs and their children
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if only:
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ids = []
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while only:
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currentid = only.pop()
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@@ -502,7 +522,7 @@ def insert(filename,docname,skip=[],only=[],root=None):
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pid = product.id()
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guid = product.GlobalId
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ptype = product.is_a()
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if DEBUG: print(count,"/",len(products)," creating object #",pid," : ",ptype,end="")
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if DEBUG: print(count,"/",len(products),"object #"+str(pid),":",ptype,end="")
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# checking for full FreeCAD parametric definition, overriding everything else
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@@ -517,6 +537,8 @@ def insert(filename,docname,skip=[],only=[],root=None):
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else:
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print("failed.",end="")
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# no parametric data, we go the good old way
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name = str(ptype[3:])
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if product.Name:
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name = product.Name.encode("utf8")
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@@ -567,6 +589,8 @@ def insert(filename,docname,skip=[],only=[],root=None):
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else:
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sharedobjects[bid] = None
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store = bid
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# additional setting for structural entities
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if hasattr(settings,"INCLUDE_CURVES"):
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if structobj:
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settings.set(settings.INCLUDE_CURVES,True)
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@@ -576,25 +600,26 @@ def insert(filename,docname,skip=[],only=[],root=None):
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cr = ifcopenshell.geom.create_shape(settings,product)
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brep = cr.geometry.brep_data
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except:
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pass # IfcOpenShell will yield an error if a given product has no shape, but we don't care
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pass # IfcOpenShell will yield an error if a given product has no shape, but we don't care, we're brave enough
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if brep:
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if DEBUG: print(" ",str(len(brep)/1000),"k ",end="")
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if DEBUG: print(" "+str(len(brep)/1000)+"k ",end="")
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shape = Part.Shape()
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shape.importBrepFromString(brep)
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shape.importBrepFromString(brep,False)
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shape.scale(1000.0) # IfcOpenShell always outputs in meters
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shape.scale(1000.0) # IfcOpenShell always outputs in meters, we convert to mm, the freecad internal unit
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if not shape.isNull():
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if FITVIEW_ONIMPORT and FreeCAD.GuiUp:
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# add to the global boundbox
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try:
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bb = shape.BoundBox
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# if DEBUG: print(' ' + str(bb),end="")
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except:
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bb = None
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if DEBUG: print(' BB could not be computed',end="")
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if bb.isValid():
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if bb and bb.isValid():
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if not overallboundbox:
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overallboundbox = bb
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if not overallboundbox.isInside(bb):
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@@ -602,6 +627,8 @@ def insert(filename,docname,skip=[],only=[],root=None):
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overallboundbox.add(bb)
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if (MERGE_MODE_ARCH > 0 and archobj) or structobj:
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# additional tweaks when not using Arch objects
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if ptype == "IfcSpace": # do not add spaces to compounds
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if DEBUG: print("skipping space ",pid,end="")
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elif structobj:
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@@ -613,11 +640,13 @@ def insert(filename,docname,skip=[],only=[],root=None):
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if DEBUG: print(shape.Solids," ",end="")
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baseobj = shape
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else:
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# create base shape object
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if clone:
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if DEBUG: print("clone ",end="")
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else:
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if GET_EXTRUSIONS:
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ex = Arch.getExtrusionData(shape)
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ex = Arch.getExtrusionData(shape) # is this an extrusion?
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if ex:
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# check for extrusion profile
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baseface = None
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@@ -633,31 +662,45 @@ def insert(filename,docname,skip=[],only=[],root=None):
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# reuse existing profile
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print("shared extrusion ",end="")
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baseface = profiles[profileid]
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# calculate delta placement between stored profile and this one
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addplacement = FreeCAD.Placement()
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addplacement.Rotation = FreeCAD.Rotation(baseface.Shape.Faces[0].normalAt(0,0),ex[0].Faces[0].normalAt(0,0))
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addplacement.Base = addplacement.Rotation.multVec(ex[0].CenterOfMass.sub(baseface.Shape.CenterOfMass))
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r = FreeCAD.Rotation(baseface.Shape.Faces[0].normalAt(0,0),ex[0].Faces[0].normalAt(0,0))
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if r.Angle > 0.000001:
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# use shape methods to easily obtain a correct placement
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ts = Part.Shape()
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ts.rotate(DraftVecUtils.tup(baseface.Shape.CenterOfMass), DraftVecUtils.tup(r.Axis), math.degrees(r.Angle))
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addplacement = ts.Placement
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d = ex[0].CenterOfMass.sub(baseface.Shape.CenterOfMass)
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if d.Length > 0.000001:
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addplacement.move(d)
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if not baseface:
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print("extrusion ",end="")
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baseface = FreeCAD.ActiveDocument.addObject("Part::Feature",name+"_footprint")
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# bug in ifcopenshell? Some faces of a shell may have non-null placement
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# workaround to remove the bad placement: exporting/reimporting as step
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if not ex[0].Placement.isNull():
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import tempfile
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fd, tf = tempfile.mkstemp(suffix=".stp")
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ex[0].exportStep(tf)
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f = Part.read(tf)
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os.close(fd)
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os.remove(tf)
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import DraftGeomUtils
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if DraftGeomUtils.hasCurves(ex[0]) or len(ex[0].Wires) != 1:
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# curves or holes? We just make a Part face
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baseface = FreeCAD.ActiveDocument.addObject("Part::Feature",name+"_footprint")
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# bug in ifcopenshell? Some faces of a shell may have non-null placement
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# workaround to remove the bad placement: exporting/reimporting as step
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if not ex[0].Placement.isNull():
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import tempfile
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fd, tf = tempfile.mkstemp(suffix=".stp")
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ex[0].exportStep(tf)
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f = Part.read(tf)
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os.close(fd)
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os.remove(tf)
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else:
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f = ex[0]
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baseface.Shape = f
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else:
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f = ex[0]
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baseface.Shape = f
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# no hole and no curves, we make a Draft Wire instead
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baseface = Draft.makeWire([v.Point for v in ex[0].Wires[0].OrderedVertexes],closed=True)
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if profileid:
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profiles[profileid] = baseface
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baseobj = FreeCAD.ActiveDocument.addObject("Part::Extrusion",name+"_body")
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baseobj.Base = baseface
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if addplacement:
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baseobj.Placement.Rotation = addplacement.Rotation
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baseobj.Placement.move(addplacement.Base)
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# apply delta placement (stored profile)
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baseobj.Placement = addplacement
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baseobj.Dir = addplacement.Rotation.inverted().multVec(ex[1])
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else:
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baseobj.Dir = ex[1]
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@@ -706,14 +749,24 @@ def insert(filename,docname,skip=[],only=[],root=None):
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print("failed to compute placement ",)
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else:
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obj = getattr(Arch,"make"+freecadtype)(baseobj=baseobj,name=name)
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if freecadtype in ["Wall","Structure"] and baseobj and baseobj.isDerivedFrom("Part::Extrusion"):
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# remove intermediary extrusion for types that can extrude themselves
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obj.Base = baseobj.Base
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obj.Placement = obj.Placement.multiply(baseobj.Placement)
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obj.Height = baseobj.Dir.Length
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obj.Normal = FreeCAD.Vector(baseobj.Dir).normalize()
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bn = baseobj.Name
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FreeCAD.ActiveDocument.removeObject(bn)
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if (freecadtype in ["Structure","Wall"]) and not baseobj:
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# remove sizes to prevent auto shape creation
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# remove sizes to prevent auto shape creation for types that don't require a base object
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obj.Height = 0
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obj.Width = 0
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obj.Length = 0
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if store:
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sharedobjects[store] = obj
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obj.Label = name
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if DEBUG: print(": "+obj.Label+" ",end="")
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if hasattr(obj,"Description") and hasattr(product,"Description"):
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if product.Description:
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obj.Description = product.Description
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@@ -724,7 +777,7 @@ def insert(filename,docname,skip=[],only=[],root=None):
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if product.Elevation:
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obj.Placement.Base.z = product.Elevation * 1000
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# setting role
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# setting IFC role
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try:
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if hasattr(obj,"IfcRole"):
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@@ -763,7 +816,7 @@ def insert(filename,docname,skip=[],only=[],root=None):
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elif (MERGE_MODE_ARCH == 1 and archobj) or (MERGE_MODE_STRUCT == 0 and not archobj):
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# non-parametric Arch objects
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# non-parametric Arch objects (just Arch components with a shape)
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if ptype in ["IfcSite","IfcBuilding","IfcBuildingStorey"]:
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for freecadtype,ifctypes in typesmap.items():
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@@ -891,7 +944,13 @@ def insert(filename,docname,skip=[],only=[],root=None):
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annotations.append(product)
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break
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progressbar.next()
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try:
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progressbar.next(True)
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except(RuntimeError):
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print("Aborted.")
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progressbar.stop()
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FreeCAD.ActiveDocument.recompute()
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return
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progressbar.stop()
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FreeCAD.ActiveDocument.recompute()
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@@ -974,6 +1033,8 @@ def insert(filename,docname,skip=[],only=[],root=None):
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if MERGE_MODE_ARCH == 3:
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# One compound per storey
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if DEBUG: print("Joining Arch shapes...",end="")
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for host,children in additions.items(): # Arch
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@@ -1013,7 +1074,7 @@ def insert(filename,docname,skip=[],only=[],root=None):
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if DEBUG and first:
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print("")
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first = False
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if DEBUG: print(" subtracting ",objects[subtraction[0]].Label, " from ", objects[subtraction[1]].Label)
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if DEBUG: print(" subtracting",objects[subtraction[0]].Label, "from", objects[subtraction[1]].Label)
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Arch.removeComponents(objects[subtraction[0]],objects[subtraction[1]])
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if DEBUG: FreeCAD.ActiveDocument.recompute()
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@@ -1030,7 +1091,7 @@ def insert(filename,docname,skip=[],only=[],root=None):
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# avoid huge fusions
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print("more than 10 shapes to add: skipping.")
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else:
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if DEBUG: print(" adding ",len(cobs), " object(s) to ", objects[host].Label)
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if DEBUG: print(" adding",len(cobs), "object(s) to", objects[host].Label)
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Arch.addComponents(cobs,objects[host])
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if DEBUG: FreeCAD.ActiveDocument.recompute()
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@@ -1173,7 +1234,11 @@ def insert(filename,docname,skip=[],only=[],root=None):
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class recycler:
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"a mechanism to reuse ifc entities if needed"
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"the compression engine - a mechanism to reuse ifc entities if needed"
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# this object has some methods identical to corresponding ifcopenshell methods,
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# but it checks if a similar entity already exists before creating a new one
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# to compress a new type, just add the necessary method here
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def __init__(self,ifcfile):
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@@ -1287,6 +1352,7 @@ class recycler:
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self.transformationoperators[key] = c
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return c
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def export(exportList,filename):
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@@ -1423,6 +1489,8 @@ def export(exportList,filename):
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continue
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if (Draft.getType(obj) == "BuildingPart") and hasattr(obj,"IfcRole") and (obj.IfcRole == "Undefined"):
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ifctype = "IfcBuildingStorey" # export BuildingParts as Storeys if their type wasn't explicitely set
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if (Draft.getType(obj) == "BuildingPart") and hasattr(obj,"IfcRole") and (obj.IfcRole == "Building"):
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ifctype = "IfcBuilding"
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# export grids
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@@ -1784,41 +1852,44 @@ def export(exportList,filename):
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treated = []
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defaulthost = []
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for floor in Draft.getObjectsOfType(objectslist,"Floor")+Draft.getObjectsOfType(objectslist,"BuildingPart"):
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objs = Draft.getGroupContents(floor,walls=True)
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objs = Arch.pruneIncluded(objs)
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children = []
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for c in objs:
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if c.Name in products.keys():
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if (Draft.getType(floor) == "Floor") or (hasattr(floor,"IfcRole") and floor.IfcRole != "Building"):
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objs = Draft.getGroupContents(floor,walls=True)
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objs = Arch.pruneIncluded(objs)
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children = []
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for c in objs:
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if c.Name in products.keys():
|
||||
if not (c.Name in treated):
|
||||
children.append(products[c.Name])
|
||||
treated.append(c.Name)
|
||||
f = products[floor.Name]
|
||||
if children:
|
||||
ifcfile.createIfcRelContainedInSpatialStructure(ifcopenshell.guid.compress(uuid.uuid1().hex),history,'StoreyLink','',children,f)
|
||||
floors.append(f)
|
||||
defaulthost = f
|
||||
for building in Draft.getObjectsOfType(objectslist,"Building")+Draft.getObjectsOfType(objectslist,"BuildingPart"):
|
||||
if (Draft.getType(building) == "Building") or (hasattr(building,"IfcRole") and building.IfcRole == "Building"):
|
||||
objs = Draft.getGroupContents(building,walls=True,addgroups=True)
|
||||
objs = Arch.pruneIncluded(objs)
|
||||
children = []
|
||||
childfloors = []
|
||||
for c in objs:
|
||||
if not (c.Name in treated):
|
||||
children.append(products[c.Name])
|
||||
treated.append(c.Name)
|
||||
f = products[floor.Name]
|
||||
if children:
|
||||
ifcfile.createIfcRelContainedInSpatialStructure(ifcopenshell.guid.compress(uuid.uuid1().hex),history,'StoreyLink','',children,f)
|
||||
floors.append(f)
|
||||
defaulthost = f
|
||||
for building in Draft.getObjectsOfType(objectslist,"Building"):
|
||||
objs = Draft.getGroupContents(building,walls=True,addgroups=True)
|
||||
objs = Arch.pruneIncluded(objs)
|
||||
children = []
|
||||
childfloors = []
|
||||
for c in objs:
|
||||
if not (c.Name in treated):
|
||||
if c.Name != building.Name: # getGroupContents + addgroups will include the building itself
|
||||
if c.Name in products.keys():
|
||||
if Draft.getType(c) in ["Floor","BuildingPart"]:
|
||||
childfloors.append(products[c.Name])
|
||||
treated.append(c.Name)
|
||||
elif not (c.Name in treated):
|
||||
children.append(products[c.Name])
|
||||
treated.append(c.Name)
|
||||
b = products[building.Name]
|
||||
if children:
|
||||
ifcfile.createIfcRelContainedInSpatialStructure(ifcopenshell.guid.compress(uuid.uuid1().hex),history,'BuildingLink','',children,b)
|
||||
if childfloors:
|
||||
ifcfile.createIfcRelAggregates(ifcopenshell.guid.compress(uuid.uuid1().hex),history,'BuildingLink','',b,childfloors)
|
||||
buildings.append(b)
|
||||
#defaulthost = b
|
||||
if c.Name != building.Name: # getGroupContents + addgroups will include the building itself
|
||||
if c.Name in products.keys():
|
||||
if Draft.getType(c) in ["Floor","BuildingPart"]:
|
||||
childfloors.append(products[c.Name])
|
||||
treated.append(c.Name)
|
||||
elif not (c.Name in treated):
|
||||
children.append(products[c.Name])
|
||||
treated.append(c.Name)
|
||||
b = products[building.Name]
|
||||
if children:
|
||||
ifcfile.createIfcRelContainedInSpatialStructure(ifcopenshell.guid.compress(uuid.uuid1().hex),history,'BuildingLink','',children,b)
|
||||
if childfloors:
|
||||
ifcfile.createIfcRelAggregates(ifcopenshell.guid.compress(uuid.uuid1().hex),history,'BuildingLink','',b,childfloors)
|
||||
buildings.append(b)
|
||||
if not defaulthost and not ADDDEFAULTSTOREY:
|
||||
defaulthost = b
|
||||
for site in Draft.getObjectsOfType(objectslist,"Site"):
|
||||
objs = Draft.getGroupContents(site,walls=True,addgroups=True)
|
||||
objs = Arch.pruneIncluded(objs)
|
||||
@@ -1832,8 +1903,8 @@ def export(exportList,filename):
|
||||
childbuildings.append(products[c.Name])
|
||||
treated.append(c.Name)
|
||||
sites.append(products[site.Name])
|
||||
if not defaulthost:
|
||||
defaulthost = products[site.Name]
|
||||
#if not defaulthost:
|
||||
#defaulthost = products[site.Name]
|
||||
if not sites:
|
||||
if DEBUG: print("No site found. Adding default site")
|
||||
sites = [ifcfile.createIfcSite(ifcopenshell.guid.compress(uuid.uuid1().hex),history,"Default Site",'',None,None,None,None,"ELEMENT",None,None,None,None,None)]
|
||||
|
||||
Reference in New Issue
Block a user