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https://github.com/IfcOpenShell/IfcOpenShell.git
synced 2026-08-16 02:24:30 +00:00
ifccityjson: temporary fix until CJIO can build its LOD dictionary again
This commit is contained in:
Laurens Oostwegel
@@ -15,12 +15,14 @@
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with ifccityjson. If not, see <http://www.gnu.org/licenses/>.
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import os
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import copy
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import ifcopenshell
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import ifcopenshell.api
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from geometry import GeometryIO
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from datetime import datetime
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import os
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JSON_TO_IFC = {
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"Building": ["IfcBuilding"],
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@@ -126,20 +128,9 @@ class Cityjson2ifc:
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if not self.city_model.has_metadata() or "presentLoDs" not in self.city_model.j["metadata"]:
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self.city_model.update_metadata()
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self.IFC_representation_sub_contexts = {}
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for lod in self.city_model.j["metadata"]["presentLoDs"]:
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# TODO in ifcopenshell.api.context.add_context add support for UserDefinedTargetView
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# self.IFC_representation_sub_contexts[str(lod)] = ifcopenshell.api.run("context.add_context", self.IFC_model,
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# **{"context": "Model",
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# "subcontext": "Body",
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# "target_view": "USERDEFINED",
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# "UserDefinedTargetView":str(lod)})
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self.IFC_representation_sub_contexts[str(lod)] = self.IFC_model.create_entity("IfcGeometricRepresentationSubContext",
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**{"ContextType": "Model",
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"ContextIdentifier": "Body",
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"TargetView": "USERDEFINED",
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"ParentContext": self.IFC_representation_context,
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"UserDefinedTargetView": "LOD" + str(lod)})
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# create IFC representation subcontexts from lods
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self.create_representation_sub_contexts()
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self.IFC_site = ifcopenshell.api.run("root.create_entity", self.IFC_model,
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**{"ifc_class": "IfcSite",
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@@ -149,6 +140,25 @@ class Cityjson2ifc:
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"RelatedObjects": [self.IFC_site],
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"RelatingObject": self.IFC_project})
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def create_representation_sub_contexts(self):
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self.IFC_representation_sub_contexts = {}
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for lod in self.city_model.j["metadata"]["presentLoDs"]:
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self.IFC_representation_sub_contexts[str(lod)] = self.create_representation_sub_context(lod)
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def create_representation_sub_context(self, lod):
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# TODO in ifcopenshell.api.context.add_context add support for UserDefinedTargetView
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# self.IFC_representation_sub_contexts[str(lod)] = ifcopenshell.api.run("context.add_context", self.IFC_model,
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# **{"context": "Model",
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# "subcontext": "Body",
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# "target_view": "USERDEFINED",
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# "UserDefinedTargetView":str(lod)})
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return self.IFC_model.create_entity("IfcGeometricRepresentationSubContext",
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**{"ContextType": "Model",
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"ContextIdentifier": "Body",
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"TargetView": "USERDEFINED",
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"ParentContext": self.IFC_representation_context,
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"UserDefinedTargetView": "LOD" + str(lod)})
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def create_owner_history(self):
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actor = self.IFC_model.createIfcActorRole("ENGINEER", None, None)
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person = self.IFC_model.createIfcPerson("Oostwegel", None, "L.J.N.", None, None, None, (actor,))
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@@ -178,24 +188,27 @@ class Cityjson2ifc:
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file = self.properties["file_destination"] + lod + self.properties["file_extension"]
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self.IFC_model.write(file)
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IFC_copied_model = ifcopenshell.open(file)
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IFC_copied_model_sub_contexts = IFC_copied_model.by_type('IfcGeometricRepresentationSubContext')
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for sub_context in IFC_copied_model_sub_contexts:
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print(sub_context)
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if sub_context.id() == sub_context_id:
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continue
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else:
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elements = IFC_copied_model.get_inverse(sub_context)
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for element in elements:
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IFC_copied_model.remove(element)
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IFC_copied_model.remove(sub_context)
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representations_in_context = sub_context.RepresentationsInContext
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for element in representations_in_context:
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IFC_copied_model.remove(element)
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# slow:
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# ifcopenshell.api.run("geometry.remove_representation", IFC_copied_model, representation=element)
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ifcopenshell.api.run("context.remove_context", IFC_copied_model, context=sub_context)
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IFC_copied_model.write(file)
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del IFC_copied_model
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def create_IFC_classes(self):
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parents_children_relations = {"IfcSite": {'Parent': self.IFC_site, 'Children': []}}
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geometries = {}
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for obj_id, obj in self.city_model.get_cityobjects().items():
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# CityJSON type to class
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mapping = JSON_TO_IFC[obj.type]
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IFC_class = mapping[0]
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@@ -210,9 +223,6 @@ class Cityjson2ifc:
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if "name_attribute" in self.properties and self.properties["name_attribute"] in obj.attributes:
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IFC_name = obj.attributes[self.properties["name_attribute"]]
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# geometry_lod
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lod = 0
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geometry = None
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if len(obj.geometry) == 0:
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print(f"Warning: Object {obj_id} has no geometry.")
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@@ -220,11 +230,16 @@ class Cityjson2ifc:
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IFC_shape_representations = []
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for geometry in obj.geometry:
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lod = geometry.lod
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if str(lod) != '1.3': # TODO: split LODS
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continue
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if str(lod) not in self.IFC_representation_sub_contexts:
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self.IFC_representation_sub_contexts[str(lod)] = self.create_representation_sub_context(lod)
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IFC_geometry, shape_representation_type = None, None
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# representation = self.create_IFC_LOD_representation(obj, geometry)
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if geometry and geometry.surfaces:
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IFC_semantic_surface_children = self.create_IFC_semantic_surface_children(geometry, lod)
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if geometry:
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IFC_semantic_surface_children.extend(self.create_IFC_semantic_surface_children(geometry, lod))
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elif geometry:
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IFC_geometry, shape_representation_type = self.geometry.create_IFC_geometry(self.IFC_model,
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geometry)
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if IFC_geometry:
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@@ -264,17 +279,10 @@ class Cityjson2ifc:
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self.create_property_set(obj.attributes, IFC_object)
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for parent, parent_children in parents_children_relations.items():
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if parent == "IfcSite":
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self.IFC_model.create_entity("IfcRelAggregates",
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**{"GlobalId": ifcopenshell.guid.new(),
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"RelatedObjects": parent_children['Children'],
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"RelatingObject": parent_children['Parent']})
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continue
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self.IFC_model.create_entity("IfcRelContainedInSpatialStructure",
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self.IFC_model.create_entity("IfcRelAggregates",
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**{"GlobalId": ifcopenshell.guid.new(),
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"RelatedElements": parent_children['Children'],
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"RelatingStructure": parent_children['Parent']}
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"RelatedObjects": parent_children['Children'],
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"RelatingObject": parent_children['Parent']}
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)
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def create_IFC_semantic_surface_children(self, geometry, lod):
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@@ -289,6 +297,7 @@ class Cityjson2ifc:
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surface_geometry = self.geometry.create_IFC_surface(self.IFC_model, geometry, surface_id)
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if surface_geometry:
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IFC_shape_representation =self.create_IFC_shape_representation(surface_geometry, 'brep', lod)
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child_data["Representation"] = self.IFC_model.create_entity("IfcProductDefinitionShape",
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Representations=[IFC_shape_representation])
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IFC_semantic_surface_children.append(self.IFC_model.create_entity(IFC_child_class, **child_data))
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@@ -306,31 +315,8 @@ class Cityjson2ifc:
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return shape_representation
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def create_property_set(self, CJ_attributes, IFC_entity):
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IFC_object_properties = []
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for property, val in CJ_attributes.items():
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if val == None:
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continue
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if len(CJ_attributes) == 0:
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return
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if type(val) == int:
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IFC_type = "IfcInteger"
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elif type(val) == float:
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IFC_type = "IfcReal"
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elif type(val) == bool:
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IFC_type = "IfcBoolean"
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else:
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IFC_type = "IfcText"
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IFC_object_properties.append(
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self.IFC_model.createIfcPropertySingleValue(property, property,
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self.IFC_model.create_entity(IFC_type, val), None)
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)
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property_set = self.IFC_model.createIfcPropertySet(ifcopenshell.guid.new(),
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self.properties["owner_history"],
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"CityJSON_attributes",
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None,
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IFC_object_properties)
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self.IFC_model.createIfcRelDefinesByProperties(ifcopenshell.guid.new(),
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self.properties["owner_history"],
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None, None, [IFC_entity],
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property_set)
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pset = ifcopenshell.api.run("pset.add_pset", self.IFC_model, product=IFC_entity, name="CityJSON_attributes")
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ifcopenshell.api.run("pset.edit_pset", self.IFC_model, pset=pset, properties=CJ_attributes)
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