IFC import now supports IFC attributes

src/ifcblenderexport/io_export_ifc/import_ifc.py

@@ -1,8 +1,19 @@
 from . import ifcopenshell
 from .ifcopenshell import geom
 import bpy
+import os
+import json
 import mathutils
 
+cwd = os.path.dirname(os.path.realpath(__file__)) + os.path.sep
+
+class IfcSchema():
+    def __init__(self):
+        with open('{}ifc_elements_IFC4.json'.format(cwd + 'schema/')) as f:
+            self.elements = json.load(f)
+
+ifc_schema = IfcSchema()
+
 class MaterialCreator():
     def __init__(self):
         self.mesh = None
@@ -107,6 +118,7 @@ class IfcImporter():
         return '{}/{}'.format(element.is_a(), element.Name)
 
     def create_object(self, element):
+        print('Creating object {}'.format(element))
         if element.is_a('IfcOpeningElement'):
             return
 
@@ -122,8 +134,6 @@ class IfcImporter():
         if mesh is None:
             mesh = self.create_mesh(element, shape)
             self.meshes[mesh_name] = mesh
-        else:
-            print('we reused a mesh!')
 
         for association in element.HasAssociations:
             if association.is_a('IfcRelAssociatesMaterial'):
@@ -140,6 +150,18 @@ class IfcImporter():
         matrix.transpose()
         object.matrix_world = matrix
 
+        attributes = element.get_info()
+        if element.is_a() in ifc_schema.elements:
+            applicable_attributes = [a['name'] for a in ifc_schema.elements[element.is_a()]['attributes']]
+            for key, value in attributes.items():
+                if key not in applicable_attributes \
+                    or value is None:
+                    continue
+                attribute = object.BIMObjectProperties.attributes.add()
+                attribute.name = key
+                attribute.data_type = 'string'
+                attribute.string_value = str(value)
+
         if hasattr(element, 'ContainedInStructure') \
             and element.ContainedInStructure \
             and element.ContainedInStructure[0].RelatingStructure:
@@ -147,6 +169,7 @@ class IfcImporter():
             if structure_name in self.spatial_structure_elements:
                 self.spatial_structure_elements[structure_name]['blender'].objects.link(object)
         else:
+            print('Warning: this object is outside the spatial hierarchy')
             bpy.context.scene.collection.objects.link(object)
 
     def get_representation_id(self, element):

src/ifcblenderexport/io_export_ifc/operator.py

@@ -183,7 +183,9 @@ class ApproveClass(bpy.types.Operator):
         with open(bpy.context.scene.BIMProperties.data_dir + 'audit.txt', 'a') as file:
             for object in bpy.context.selected_objects:
                 file.write('Then the element {} is an {}\n'.format(
-                    object['IfcGlobalId'], object.name.split('/')[0]))
+                    object.BIMObjectProperties.attributes[
+                        object.BIMObjectProperties.attributes.find('GlobalId')].string_value,
+                    object.name.split('/')[0]))
         return {'FINISHED'}
 
 class RejectClass(bpy.types.Operator):
@@ -194,7 +196,9 @@ class RejectClass(bpy.types.Operator):
         with open(bpy.context.scene.BIMProperties.data_dir + 'audit.txt', 'a') as file:
             for object in bpy.context.selected_objects:
                 file.write('Then the element {} is an {}\n'.format(
-                    object['IfcGlobalId'], bpy.context.scene.BIMProperties.ifc_class))
+                    object.BIMObjectProperties.attributes[
+                        object.BIMObjectProperties.attributes.find('GlobalId')].string_value,
+                    bpy.context.scene.BIMProperties.ifc_class))
         return {'FINISHED'}
 
 class RejectElement(bpy.types.Operator):
@@ -205,7 +209,9 @@ class RejectElement(bpy.types.Operator):
         with open(bpy.context.scene.BIMProperties.data_dir + 'audit.txt', 'a') as file:
             for object in bpy.context.selected_objects:
                 file.write('Then the element {} should not exist because {}\n'.format(
-                    object['IfcGlobalId'], bpy.context.scene.BIMProperties.qa_reject_element_reason))
+                    object.BIMObjectProperties.attributes[
+                        object.BIMObjectProperties.attributes.find('GlobalId')].string_value,
+                    bpy.context.scene.BIMProperties.qa_reject_element_reason))
         return {'FINISHED'}
 
 class SelectAudited(bpy.types.Operator):
@@ -216,8 +222,9 @@ class SelectAudited(bpy.types.Operator):
         with open(bpy.context.scene.BIMProperties.data_dir + 'audit.txt') as file:
             for line in file:
                 for object in bpy.context.visible_objects:
-                    if 'IfcGlobalId' in object.keys() \
+                    index = object.BIMObjectProperties.attributes.find('GlobalId')
-                        and object['IfcGlobalId'] == line.split(' ')[3]:
+                    if index != -1 \
+                        and object.BIMObjectProperties.attributes[index].string_value == line.split(' ')[3]:
                         object.select_set(True)
         return {'FINISHED'}