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ifc_psets.py
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ifc_psets.py
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# ***************************************************************************
# * *
# * Copyright (c) 2023 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 General Public License (GPL) *
# * as published by the Free Software Foundation; either version 3 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 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 *
# * *
# ***************************************************************************
"""This NativeIFC module deals with properties and property sets"""
import re
import FreeCAD
import ifc_tools
def has_psets(obj):
"""Returns True if an object has attached psets"""
element = ifc_tools.get_ifc_element(obj)
psets = getattr(element, "IsDefinedBy", [])
if psets and [p for p in psets if p.is_a("IfcRelDefinesByProperties")]:
# TODO verify too if these psets are not already there
return True
psets = getattr(element, "HasProperties", [])
if psets:
return True
return False
def get_psets(element):
"""Returns a dictionary of dictionaries representing the
properties of an element in the form:
{ pset_name : { property_name : IfcType(value), ... }, ... }"""
result = {}
psets = getattr(element, "IsDefinedBy", [])
psets = [p for p in psets if p.is_a("IfcRelDefinesByProperties")]
psets = [p.RelatingPropertyDefinition for p in psets]
if not psets:
psets = getattr(element, "HasProperties", [])
for pset in psets:
pset_dict = {}
if pset.is_a("IfcPropertySet"):
for prop in pset.HasProperties:
pset_dict[prop.Name] = str(prop.NominalValue)
if pset.is_a("IfcMaterialProperties"):
for prop in pset.Properties:
pset_dict[prop.Name] = str(prop.NominalValue)
elif pset.is_a("IfcElementQuantity"):
# TODO implement quantities
pass
if pset_dict:
result[pset.Name] = pset_dict
return result
def get_pset(psetname, element):
"""Returns an IfcPropertySet with the given name"""
psets = getattr(element, "IsDefinedBy", [])
psets = [p for p in psets if p.is_a("IfcRelDefinesByProperties")]
for p in psets:
pset = p.RelatingPropertyDefinition
if pset.Name == psetname:
return pset
return None
def show_psets(obj):
"""Shows the psets attached to the given object as properties"""
element = ifc_tools.get_ifc_element(obj)
if not element:
return
psets = get_psets(element)
for gname, pset in psets.items():
for pname, pvalue in pset.items():
oname = pname
ptype, value = pvalue.split("(", 1)
value = value.strip(")")
value = value.strip("'")
pname = re.sub("[^0-9a-zA-Z]+", "", pname)
if pname[0].isdigit():
pname = "_" + pname
ttip = (
ptype + ":" + oname
) # setting IfcType:PropName as a tooltip to desambiguate
while pname in obj.PropertiesList:
# print("DEBUG: property", pname, "(", value, ") already exists in", obj.Label)
pname += "_"
if ptype in [
"IfcPositiveLengthMeasure",
"IfcLengthMeasure",
"IfcNonNegativeLengthMeasure",
]:
obj.addProperty("App::PropertyDistance", pname, gname, ttip)
elif ptype in ["IfcVolumeMeasure"]:
obj.addProperty("App::PropertyVolume", pname, gname, ttip)
elif ptype in ["IfcPositivePlaneAngleMeasure", "IfcPlaneAngleMeasure"]:
obj.addProperty("App::PropertyAngle", pname, gname, ttip)
value = float(value)
while value > 360:
value = value - 360
elif ptype in ["IfcMassMeasure"]:
obj.addProperty("App::PropertyMass", pname, gname, ttip)
elif ptype in ["IfcAreaMeasure"]:
obj.addProperty("App::PropertyArea", pname, gname, ttip)
elif ptype in ["IfcCountMeasure", "IfcInteger"]:
obj.addProperty("App::PropertyInteger", pname, gname, ttip)
value = int(value.strip("."))
elif ptype in ["IfcReal"]:
obj.addProperty("App::PropertyFloat", pname, gname, ttip)
value = float(value)
elif ptype in ["IfcBoolean", "IfcLogical"]:
obj.addProperty("App::PropertyBool", pname, gname, ttip)
if value in [".T."]:
value = True
else:
value = False
elif ptype in [
"IfcDateTime",
"IfcDate",
"IfcTime",
"IfcDuration",
"IfcTimeStamp",
]:
obj.addProperty("App::PropertyTime", pname, gname, ttip)
else:
obj.addProperty("App::PropertyString", pname, gname, ttip)
# print("DEBUG: setting",pname, ptype, value)
setattr(obj, pname, value)
def edit_pset(obj, prop, value=None):
"""Edits the corresponding property"""
pset = obj.getGroupOfProperty(prop)
ttip = obj.getDocumentationOfProperty(prop)
if value is None:
value = getattr(obj, prop)
ifcfile = ifc_tools.get_ifcfile(obj)
element = ifc_tools.get_ifc_element(obj)
pset_exist = get_psets(element)
if ttip.startswith("Ifc") and ":" in ttip:
target_prop = ttip.split(":", 1)[-1]
else:
# no tooltip set - try to build a name
prop = prop.rstrip("_")
prop_uncamel = re.sub(r"(\w)([A-Z])", r"\1 \2", prop)
prop_unslash = re.sub(r"(\w)([A-Z])", r"\1\/\2", prop)
target_prop = None
if pset in pset_exist:
if not target_prop:
if prop in pset_exist[pset]:
target_prop = prop
elif prop_uncamel in pset_exist[pset]:
target_prop = prop_uncamel
elif prop_unslash in pset_exist[pset]:
target_prop = prop_unslash
if target_prop:
value_exist = pset_exist[pset][target_prop].split("(", 1)[1][:-1].strip("'")
if value_exist in [".F.", ".U."]:
value_exist = False
elif value_exist in [".T."]:
value_exist = True
elif isinstance(value, int):
value_exist = int(value_exist.strip("."))
elif isinstance(value, float):
value_exist = float(value_exist)
elif isinstance(value, FreeCAD.Units.Quantity):
if value.Unit.Type == "Angle":
value_exist = float(value_exist)
while value_exist > 360:
value_exist = value_exist - 360
value_exist = FreeCAD.Units.Quantity(float(value_exist), value.Unit)
if value == value_exist:
return False
else:
FreeCAD.Console.PrintLog(
"IFC: property changed for "
+ obj.Label
+ " ("
+ str(obj.StepId)
+ ") : "
+ str(target_prop)
+ " : "
+ str(value)
+ " ("
+ str(type(value))
+ ") -> "
+ str(value_exist)
+ " ("
+ str(type(value_exist))
+ ")\n"
)
pset = get_pset(pset, element)
else:
pset = ifc_tools.api_run("pset.add_pset", ifcfile, product=element, name=pset)
if not target_prop:
target_prop = prop
ifc_tools.api_run(
"pset.edit_pset", ifcfile, pset=pset, properties={target_prop: value}
)
# TODO manage quantities
return True
def load_psets(obj):
"""Recursively loads psets of child objects"""
show_psets(obj)
if isinstance(obj, FreeCAD.DocumentObject):
group = obj.Group
else:
group = obj.Objects
for child in group:
load_psets(child)
def add_pset(obj, psetname):
"""Adds a pset with the given name to the given object"""
ifcfile = ifc_tools.get_ifcfile(obj)
element = ifc_tools.get_ifc_element(obj)
if ifcfile and element:
pset = ifc_tools.api_run(
"pset.add_pset", ifcfile, product=element, name=psetname
)
return pset
def add_property(ifcfile, pset, name, value=""):
"""Adds a property with the given name to the given pset. The type is deduced from
the value: string is IfcLabel, True/False is IfcBoolean, number is IfcLengthMeasure.
To force a certain type, value can also be an IFC element such as IfcLabel"""
ifc_tools.api_run("pset.edit_pset", ifcfile, pset=pset, properties={name: value})