previously it required to save external style attributes to preview the changes, now it's couple clicks saved if you want to preview different blender materials for your styles
Examples:
1) active shading type = EXTERNAL, now after changing it's SHADING attributes and accepting the changes, it will reload EXTERNAL shading back since it's the one that's active.
2) active shading type = SHADING, after adding EXTERNAL shader will reload SHADING style to the material.
Mentioned in #4593
The error message was (it was trying to access curves from the original mesh instead of dummy curve object):
```
Error: Python: Traceback (most recent call last):
File "\blenderbim\bim\module\geometry\operator.py", line 46, in execute
IfcStore.execute_ifc_operator(self, context)
File "\blenderbim\bim\ifc.py", line 349, in execute_ifc_operator
result = getattr(operator, "_execute")(context)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "\blenderbim\bim\module\geometry\operator.py", line 169, in _execute
core.add_representation(
File "\blenderbim\core\geometry.py", line 52, in add_representation
representation = ifc.run(
^^^^^^^^
File "\blenderbim\tool\ifc.py", line 34, in run
return ifcopenshell.api.run(command, IfcStore.get_file(), **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "\blenderbim\libs\site\packages\ifcopenshell\api\__init__.py", line 172, in run
result = usecase_class(ifc_file, **settings).execute()
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "\blenderbim\libs\site\packages\ifcopenshell\api\geometry\add_representation.py", line 73, in execute
return self.create_plan_representation()
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "\blenderbim\libs\site\packages\ifcopenshell\api\geometry\add_representation.py", line 170, in create_plan_representation
return self.create_annotation2d_representation()
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "\blenderbim\libs\site\packages\ifcopenshell\api\geometry\add_representation.py", line 833, in create_annotation2d_representation
items = [self.file.createIfcGeometricCurveSet(self.create_curves(is_2d=True))]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "\blenderbim\libs\site\packages\ifcopenshell\api\geometry\add_representation.py", line 492, in create_curves
curves = self.create_curves_from_curve_ifc2x3(is_2d=is_2d, curve_object_data=dummy.data)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "\blenderbim\libs\site\packages\ifcopenshell\api\geometry\add_representation.py", line 575, in create_curves_from_curve_ifc2x3
for spline in self.settings["geometry"].splines:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'Mesh' object has no attribute 'splines'
```
it was failing with something very verbose:
```
File "\blenderbim\bim\module\project\operator.py", line 1239, in execute
db = ifcpatch.execute(
^^^^^^^^^^^^^^^^^
File "\blenderbim\libs\site\packages\ifcpatch\__init__.py", line 80, in execute
patcher.patch()
File "\blenderbim\libs\site\packages\ifcpatch\recipes\ExtractPropertiesToSQLite.py", line 137, in patch
properties.append([i, "IFC Material", f"Layer {idx + 1} Name", item.Name])
^^^^^^^^^
File "\blenderbim\libs\site\packages\ifcopenshell\entity_instance.py", line 197, in __getattr__
raise AttributeError(
AttributeError: entity instance of type 'IFC2X3.IfcMaterialLayer' has no attribute 'Name'
Error: Python: Traceback (most recent call last):
File "\blenderbim\bim\module\project\operator.py", line 1239, in execute
db = ifcpatch.execute(
^^^^^^^^^^^^^^^^^
File "\blenderbim\libs\site\packages\ifcpatch\__init__.py", line 80, in execute
patcher.patch()
File "\blenderbim\libs\site\packages\ifcpatch\recipes\ExtractPropertiesToSQLite.py", line 137, in patch
properties.append([i, "IFC Material", f"Layer {idx + 1} Name", item.Name])
^^^^^^^^^
File "\blenderbim\libs\site\packages\ifcopenshell\entity_instance.py", line 197, in __getattr__
raise AttributeError(
AttributeError: entity inTraceback (most recent call last):
File "\Temp\tmpdggt3syt.py", line 9, in <module>
run()
File "\Temp\tmpdggt3syt.py", line 5, in run
bpy.ops.bim.load_linked_project(filepath="/Dormitory-ARC.ifc", false_origin="0,0,0")
File "\Blender\4.1\scripts\modules\bpy\ops.py", line 109, in __call__
ret = _op_call(self.idname_py(), kw)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
RuntimeError: Error: Python: Traceback (most recent call last):
File "\blenderbim\bim\module\project\operator.py", line 1239, in execute
db = ifcpatch.execute(
^^^^^^^^^^^^^^^^^
File "\blenderbim\libs\site\packages\ifcpatch\__init__.py", line 80, in execute
patcher.patch()
File "\blenderbim\libs\site\packages\ifcpatch\recipes\ExtractPropertiesToSQLite.py", line 137, in patch
properties.append([i, "IFC Material", f"Layer {idx + 1} Name", item.Name])
^^^^^^^^^
File "\blenderbim\libs\site\packages\ifcopenshell\entity_instance.py", line 197, in __getattr__
raise AttributeError(
AttributeError: entity instance of type 'IFC2X3.IfcMaterialLayer' has no attribute 'Name'
Location: \Blender\4.1\scripts\modules\bpy\ops.py:109
... truncatedUnregistered Snippets Library
BMAX Connector - UnRegistred!
An error occurred while processing your IFC.
Traceback (most recent call last):
File "\blenderbim\bim\module\project\operator.py", line 949, in execute
self.link_ifc()
File "\blenderbim\bim\module\project\operator.py", line 991, in link_ifc
self.link_blend(blend_filepath)
File "\blenderbim\bim\module\project\operator.py", line 953, in link_blend
with bpy.data.libraries.load(filepath, link=True) as (data_from, data_to):
OSError: load: \Dormitory-ARC.ifc.cache.blend failed to open blend file
Error: Python: Traceback (most recent call last):
File "\blenderbim\bim\module\project\operator.py", line 949, in execute
self.link_ifc()
File "\blenderbim\bim\module\project\operator.py", line 991, in link_ifc
self.link_blend(blend_filepath)
File "\blenderbim\bim\module\project\operator.py", line 953, in link_blend
with bpy.data.libraries.load(filepath, link=True) as (data_from, data_to):
OSError: load: \Dormitory-ARC.ifc.cache.blend failed to open blend file
Location: \Blender\4.1\scripts\modules\bpy\ops.py:109
Traceback (most recent call last):
File "\blenderbim\bim\module\project\operator.py", line 870, in execute
bpy.ops.bim.load_link(filepath=filepath, false_origin=self.false_origin)
File "\Blender\4.1\scripts\modules\bpy\ops.py", line 109, in __call__
ret = _op_call(self.idname_py(), kw)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
RuntimeError: Error: Python: Traceback (most recent call last):
File "\blenderbim\bim\module\project\operator.py", line 949, in execute
self.link_ifc()
File "\blenderbim\bim\module\project\operator.py", line 991, in link_ifc
self.link_blend(blend_filepath)
File "\blenderbim\bim\module\project\operator.py", line 953, in link_blend
with bpy.data.libraries.load(filepath, link=True) as (data_from, data_to):
OSError: load: \Dormitory-ARC.ifc.cache.blend failed to open blend file
Location: \Blender\4.1\scripts\modules\bpy\ops.py:109
```
Dion Moult