Add UI for pset overrides without the need to create a CSV.

src/ifcblenderexport/blenderbim/__init__.py

@@ -61,6 +61,8 @@ if bpy is not None:
         operator.UnassignPset,
         operator.AddPset,
         operator.RemovePset,
+        operator.AddOverridePset,
+        operator.RemoveOverridePset,
         operator.AddMaterialPset,
         operator.RemoveMaterialPset,
         operator.AddDocument,

src/ifcblenderexport/blenderbim/export_ifc.py

@@ -7,6 +7,7 @@ import os
 from pathlib import Path
 from mathutils import Vector, Matrix
 from .helper import SIUnitHelper
+from . import schema
 import ifcopenshell
 import addon_utils
 
@@ -408,6 +409,18 @@ class IfcParser():
             self.rel_defines_by_pset.setdefault(
                 '{}/{}'.format(pset.name, pset.file), []).append(product)
 
+        for pset in obj.BIMObjectProperties.override_psets:
+            pset_key = '{}/{}'.format(pset.name, obj.name)
+            raw = {p.name: p.string_value for p in pset.properties if p.string_value}
+            if not raw:
+                continue
+            self.psets[pset_key] = {
+                'ifc': None,
+                'raw': raw,
+                'attributes': { 'Name': pset.name }
+            }
+            self.rel_defines_by_pset.setdefault(pset_key, []).append(product)
+
         for document in obj.BIMObjectProperties.documents:
             self.rel_associates_document_object.setdefault(
                 document.file, []).append(product)
@@ -943,10 +956,9 @@ class IfcParser():
 
 
 class IfcExporter():
-    def __init__(self, ifc_export_settings, ifc_schema, ifc_parser, qto_calculator):
+    def __init__(self, ifc_export_settings, ifc_parser, qto_calculator):
         self.template_file = '{}template.ifc'.format(ifc_export_settings.schema_dir)
         self.ifc_export_settings = ifc_export_settings
-        self.ifc_schema = ifc_schema
         self.ifc_parser = ifc_parser
         self.qto_calculator = qto_calculator
 
@@ -1206,7 +1218,7 @@ class IfcExporter():
                 })
 
     def create_pset_properties(self, pset):
-        if pset['attributes']['Name'] in self.ifc_schema.psets:
+        if pset['attributes']['Name'] in schema.ifc.psets:
             return self.create_templated_pset_properties(pset)
         return self.create_custom_pset_properties(pset)
 
@@ -1222,7 +1234,7 @@ class IfcExporter():
 
     def create_templated_pset_properties(self, pset):
         properties = []
-        templates = self.ifc_schema.psets[pset['attributes']['Name']]['HasPropertyTemplates']
+        templates = schema.ifc.psets[pset['attributes']['Name']]['HasPropertyTemplates']
         for name, data in templates.items():
             if name not in pset['raw']:
                 continue
@@ -1250,13 +1262,13 @@ class IfcExporter():
         return properties
 
     def cast_to_base_type(self, var_type, value):
-        if var_type not in self.ifc_schema.type_map:
+        if var_type not in schema.ifc.type_map:
             return value
-        elif self.ifc_schema.type_map[var_type] == 'float':
+        elif schema.ifc.type_map[var_type] == 'float':
             return float(value)
-        elif self.ifc_schema.type_map[var_type] == 'integer':
+        elif schema.ifc.type_map[var_type] == 'integer':
             return int(value)
-        elif self.ifc_schema.type_map[var_type] == 'bool':
+        elif schema.ifc.type_map[var_type] == 'bool':
             return True if value.lower() in ['1', 't', 'true', 'yes', 'y', 'uh-huh'] else False
         return str(value)
 
@@ -1551,11 +1563,11 @@ class IfcExporter():
             )
 
     def get_product_attribute_type(self, product_class, attribute_name):
-        element_schema = self.ifc_schema.elements[product_class]
+        element_schema = schema.ifc.elements[product_class]
         for a in element_schema['attributes']:
             if a['name'] == attribute_name:
                 return a['type']
-        if element_schema['parent'] in self.ifc_schema.elements:
+        if element_schema['parent'] in schema.ifc.elements:
             return self.get_product_attribute_type(element_schema['parent'], attribute_name)
         return None
 

src/ifcblenderexport/blenderbim/import_ifc.py

@@ -7,9 +7,7 @@ import time
 import mathutils
 import multiprocessing
 from .helper import SIUnitHelper
-from .schema import IfcSchema
-
-ifc_schema = IfcSchema()
+from . import schema
 
 class MaterialCreator():
     def __init__(self, ifc_import_settings):
@@ -402,8 +400,8 @@ class IfcImporter():
 
     def add_element_attributes(self, element, obj):
         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']]
+        if element.is_a() in schema.ifc.elements:
+            applicable_attributes = [a['name'] for a in schema.ifc.elements[element.is_a()]['attributes']]
             for key, value in attributes.items():
                 if key not in applicable_attributes \
                         or value is None:

src/ifcblenderexport/blenderbim/operator.py

@@ -8,10 +8,10 @@ from . import export_ifc
 from . import import_ifc
 from . import cut_ifc
 from . import sheeter
+from . import schema
 from bpy_extras.io_utils import ImportHelper
 from itertools import cycle
 from mathutils import Vector
-from .schema import IfcSchema
 
 class ExportIFC(bpy.types.Operator):
     bl_idname = "export.ifc"
@@ -54,9 +54,8 @@ class ExportIFC(bpy.types.Operator):
                     ]
                 })
         ifc_parser = export_ifc.IfcParser(ifc_export_settings)
-        ifc_schema = IfcSchema()
         qto_calculator = export_ifc.QtoCalculator()
-        ifc_exporter = export_ifc.IfcExporter(ifc_export_settings, ifc_schema, ifc_parser, qto_calculator)
+        ifc_exporter = export_ifc.IfcExporter(ifc_export_settings, ifc_parser, qto_calculator)
         ifc_exporter.export()
         ifc_export_settings.logger.info('Export finished in {:.2f} seconds'.format(time.time() - start))
         return {'FINISHED'}
@@ -323,6 +322,32 @@ class RemovePset(bpy.types.Operator):
         return {'FINISHED'}
 
 
+class AddOverridePset(bpy.types.Operator):
+    bl_idname = 'bim.add_override_pset'
+    bl_label = 'Add Override Pset'
+
+    def execute(self, context):
+        pset_name = bpy.context.active_object.BIMObjectProperties.override_pset_name
+        if pset_name not in schema.ifc.psets:
+            return {'FINISHED'}
+        pset = bpy.context.active_object.BIMObjectProperties.override_psets.add()
+        pset.name = pset_name
+        for prop_name in schema.ifc.psets[pset_name]['HasPropertyTemplates'].keys():
+            prop = pset.properties.add()
+            prop.name = prop_name
+        return {'FINISHED'}
+
+
+class RemoveOverridePset(bpy.types.Operator):
+    bl_idname = 'bim.remove_override_pset'
+    bl_label = 'Remove Override Pset'
+    pset_index: bpy.props.IntProperty()
+
+    def execute(self, context):
+        bpy.context.active_object.BIMObjectProperties.override_psets.remove(self.pset_index)
+        return {'FINISHED'}
+
+
 class AddMaterialPset(bpy.types.Operator):
     bl_idname = 'bim.add_material_pset'
     bl_label = 'Add Material Pset'

src/ifcblenderexport/blenderbim/prop.py

@@ -3,7 +3,7 @@ import os
 import csv
 from pathlib import Path
 from . import export_ifc
-from .schema import IfcSchema
+from . import schema
 import bpy
 from bpy.types import PropertyGroup
 from bpy.app.handlers import persistent
@@ -18,8 +18,6 @@ from bpy.props import (
 
 cwd = os.path.dirname(os.path.realpath(__file__))
 
-ifc_schema = IfcSchema()
-
 diagram_scales_enum = []
 products_enum = []
 profiledef_enum = []
@@ -53,7 +51,7 @@ def setDefaultProperties(scene):
 def getIfcPredefinedTypes(self, context):
     global types_enum
     if len(types_enum) < 1:
-        for name, data in ifc_schema.elements.items():
+        for name, data in schema.ifc.elements.items():
             if name != self.ifc_class.strip():
                 continue
             for attribute in data['attributes']:
@@ -106,14 +104,14 @@ def getIfcProducts(self, context):
 def getIfcClasses(self, context):
     global classes_enum
     if len(classes_enum) < 1:
-        classes_enum.extend([(e, e, '') for e in getattr(ifc_schema, self.ifc_product)])
+        classes_enum.extend([(e, e, '') for e in getattr(schema.ifc, self.ifc_product)])
     return classes_enum
 
 
 def getProfileDef(self, context):
     global profiledef_enum
     if len(profiledef_enum) < 1:
-        profiledef_enum.extend([(e, e, '') for e in getattr(ifc_schema, 'IfcParameterizedProfileDef')])
+        profiledef_enum.extend([(e, e, '') for e in getattr(schema.ifc, 'IfcParameterizedProfileDef')])
     return profiledef_enum
 
 
@@ -206,9 +204,9 @@ def getApplicableAttributes(self, context):
     global attributes_enum
     attributes_enum.clear()
     if '/' in context.active_object.name \
-            and context.active_object.name.split('/')[0] in ifc_schema.elements:
+            and context.active_object.name.split('/')[0] in schema.ifc.elements:
         attributes_enum.extend([(a['name'], a['name'], '') for a in
-            ifc_schema.elements[context.active_object.name.split('/')[0]]['attributes']
+            schema.ifc.elements[context.active_object.name.split('/')[0]]['attributes']
             if self.attributes.find(a['name']) == -1])
     return attributes_enum
 
@@ -217,12 +215,12 @@ def getApplicableMaterialAttributes(self, context):
     global materialattributes_enum
     materialattributes_enum.clear()
     if '/' in context.active_object.name \
-            and context.active_object.name.split('/')[0] in ifc_schema.elements:
+            and context.active_object.name.split('/')[0] in schema.ifc.elements:
         material_type = context.active_object.BIMObjectProperties.material_type
         if material_type[-3:] == 'Set':
             material_type = material_type[0:-3]
         materialattributes_enum.extend([(a['name'], a['name'], '') for a in
-            ifc_schema.IfcMaterialDefinition[material_type]['attributes']
+            schema.ifc.IfcMaterialDefinition[material_type]['attributes']
             if self.attributes.find(a['name']) == -1])
     return materialattributes_enum
 
@@ -230,7 +228,7 @@ def getApplicableMaterialAttributes(self, context):
 def refreshProfileAttributes(self, context):
     while len(context.active_object.active_material.BIMMaterialProperties.profile_attributes) > 0:
         context.active_object.active_material.BIMMaterialProperties.profile_attributes.remove(0)
-    for attribute in ifc_schema.IfcParameterizedProfileDef[self.profile_def]['attributes']:
+    for attribute in schema.ifc.IfcParameterizedProfileDef[self.profile_def]['attributes']:
         profile_attribute = context.active_object.active_material.BIMMaterialProperties.profile_attributes.add()
         profile_attribute.name = attribute['name']
 
@@ -384,6 +382,7 @@ class Attribute(PropertyGroup):
 class Pset(PropertyGroup):
     name: StringProperty(name="Name")
     file: StringProperty(name="File")
+    properties: CollectionProperty(name="Properties", type=Attribute)
 
 class Document(PropertyGroup):
     file: StringProperty(name="File")
@@ -406,6 +405,8 @@ class BIMObjectProperties(PropertyGroup):
     applicable_documents: EnumProperty(items=getApplicableDocuments, name="Available Documents")
     classifications: CollectionProperty(name="Classifications", type=Classification)
     material_type: EnumProperty(items=getMaterialTypes, name="Material Type")
+    override_psets: CollectionProperty(name="Override Psets", type=Pset)
+    override_pset_name: StringProperty(name="Override Pset Name")
 
 
 class BIMMaterialProperties(PropertyGroup):

src/ifcblenderexport/blenderbim/schema.py

@@ -1,6 +1,7 @@
 import os
 import json
 import ifcopenshell
+from pathlib import Path
 
 cwd = os.path.dirname(os.path.realpath(__file__))
 
@@ -15,7 +16,10 @@ class IfcSchema():
             'IfcParameterizedProfileDef'
         ]
         self.elements = {}
-        self.property_file = ifcopenshell.open(os.path.join(self.schema_dir, 'IFC4_ADD2.ifc'))
+        self.property_files = []
+        property_paths = Path(self.schema_dir).glob('Pset_*.ifc')
+        for path in property_paths:
+            self.property_files.append(ifcopenshell.open(path))
         self.psets = {}
         self.qtos = {}
         self.load()
@@ -29,10 +33,13 @@ class IfcSchema():
         with open(os.path.join(self.schema_dir, 'ifc_types_IFC4.json')) as f:
             self.type_map = json.load(f)
 
-        for property in self.property_file.by_type('IfcPropertySetTemplate'):
-            if property.Name[0:4] == 'Qto_':
-                # self.qtos.append({ })
-                pass
-            else:
-                self.psets[property.Name] = {
-                    'HasPropertyTemplates': {p.Name: p for p in property.HasPropertyTemplates}}
+        for property_file in self.property_files:
+            for property in property_file.by_type('IfcPropertySetTemplate'):
+                if property.Name[0:4] == 'Qto_':
+                    # self.qtos.append({ })
+                    pass
+                else:
+                    self.psets[property.Name] = {
+                        'HasPropertyTemplates': {p.Name: p for p in property.HasPropertyTemplates}}
+
+ifc = IfcSchema()

src/ifcblenderexport/blenderbim/schema/Pset_Custom.ifc

@@ -0,0 +1,14 @@
+ISO-10303-21;
+HEADER;
+FILE_DESCRIPTION((),'2;1');
+FILE_NAME('Pset_Custom.ifc','2020-01-01T00:00:00',(),(),'Sample','Sample',$);
+FILE_SCHEMA(('IFC4'));
+ENDSEC;
+
+DATA;
+#1= IFCPROPERTYSETTEMPLATE('05N2Dhepb9ouTCSmWBh22D',$,'Custom_Pset','An example custom pset.',.PSET_TYPEDRIVENOVERRIDE.,'IfcObject',(#2,#3));
+#2= IFCSIMPLEPROPERTYTEMPLATE('37EpTDq4v96gTZh196BBXQ',$,'NumericProperty','An example numeric property',.P_SINGLEVALUE.,'IfcCountMeasure','',$,$,$,$,.READWRITE.);
+#3= IFCSIMPLEPROPERTYTEMPLATE('22H7CzDvz1XfVHKkGWoYUK',$,'StringProperty','An example string property',.P_SINGLEVALUE.,'IfcLabel','',$,$,$,$,.READWRITE.);
+ENDSEC;
+
+END-ISO-10303-21;

src/ifcblenderexport/blenderbim/ui.py

@@ -54,6 +54,19 @@ class BIM_PT_object(Panel):
         row = layout.row()
         row.prop(props, 'psets')
 
+        row = layout.row(align=True)
+        row.prop(props, 'override_pset_name', text='')
+        row.operator('bim.add_override_pset')
+
+        for index, pset in enumerate(props.override_psets):
+            row = layout.row(align=True)
+            row.prop(pset, 'name', text='')
+            row.operator('bim.remove_override_pset', icon='X', text='').pset_index = index
+            for prop in pset.properties:
+                row = layout.row(align=True)
+                row.prop(prop, 'name', text='')
+                row.prop(prop, 'string_value', text='')
+
         layout.label(text="Documents:")
         row = layout.row(align=True)
         row.prop(props, 'applicable_documents', text='')