Changing types of a dumb wall now auto updates their wall thicknesses

src/blenderbim/blenderbim/bim/ifc.py

@@ -47,6 +47,19 @@ class IfcStore:
             IfcStore.schema = ifcopenshell.ifcopenshell_wrapper.schema_by_name(IfcStore.file.schema)
         return IfcStore.schema
 
+    @staticmethod
+    def get_element(id_or_guid):
+        if isinstance(id_or_guid, int):
+            map_object = IfcStore.id_map
+        else:
+            map_object = IfcStore.guid_map
+        try:
+            obj = map_object[id_or_guid]
+            obj.type  # In case the object has been deleted, this triggers an exception
+        except:
+            return
+        return obj
+
     @staticmethod
     def link_element(element, obj):
         IfcStore.id_map[element.id()] = obj

src/blenderbim/blenderbim/bim/module/geometry/operator.py

@@ -200,11 +200,12 @@ class SwitchRepresentation(bpy.types.Operator):
             if self.oprops.ifc_definition_id not in VoidData.products:
                 VoidData.load(IfcStore.get_file(), self.oprops.ifc_definition_id)
             for opening_id in VoidData.products[self.oprops.ifc_definition_id]:
-                if opening_id in IfcStore.id_map:
-                    opening = IfcStore.id_map[opening_id]
-                    modifier = self.element_obj.modifiers.new("IfcOpeningElement", "BOOLEAN")
-                    modifier.operation = "DIFFERENCE"
-                    modifier.object = opening
+                opening = IfcStore.get_element(opening_id)
+                if not opening:
+                    continue
+                modifier = self.element_obj.modifiers.new("IfcOpeningElement", "BOOLEAN")
+                modifier.operation = "DIFFERENCE"
+                modifier.object = opening
         else:
             for modifier in self.element_obj.modifiers:
                 if modifier.type == "BOOLEAN" and "IfcOpeningElement" in modifier.name:

src/blenderbim/blenderbim/bim/module/model/operator.py

@@ -735,7 +735,6 @@ class DumbWallGenerator:
         element = self.file.by_id(obj.BIMObjectProperties.ifc_definition_id)
         pset = ifcopenshell.api.run("pset.add_pset", self.file, product=element, name="EPset_Parametric")
         ifcopenshell.api.run("pset.edit_pset", self.file, pset=pset, properties={"Engine": "BlenderBIM.DumbWall"})
-        ifcopenshell.api.run("material.assign_material", self.file, product=element, type="IfcMaterialLayerSetUsage")
         MaterialData.load(self.file)
         obj.select_set(True)
         return obj

src/blenderbim/blenderbim/bim/module/parametric/operator.py

@@ -106,7 +106,7 @@ def calculate_dumb_quantities(usecase_path, ifc_file, **settings):
 
 
 class DumbWallPlaner:
-    def regenerate_dumb_wall_thicknesses(self, usecase_path, ifc_file, **settings):
+    def regenerate_wall_thicknesses_from_layer(self, usecase_path, ifc_file, **settings):
         self.unit_scale = ifcopenshell.util.unit.calculate_unit_scale(ifc_file)
         layer = settings["layer"]
         thickness = settings["attributes"].get("LayerThickness")
@@ -114,7 +114,7 @@ class DumbWallPlaner:
             return
         delta_thickness = thickness - layer.LayerThickness
         for layer_set in layer.ToMaterialLayerSet:
-            total_thickness = sum([l.LayerThickness for l in layer_set.MaterialLayers]) * self.unit_scale
+            total_thickness = sum([l.LayerThickness for l in layer_set.MaterialLayers])
             if not total_thickness:
                 continue
             for inverse in ifc_file.get_inverse(layer_set):
@@ -131,14 +131,27 @@ class DumbWallPlaner:
                         for element in rel.RelatedObjects:
                             self.regenerate_wall_thickness(element, delta_thickness)
 
+    def regenerate_wall_thicknesses_from_type(self, usecase_path, ifc_file, **settings):
+        self.unit_scale = ifcopenshell.util.unit.calculate_unit_scale(ifc_file)
+        new_material = ifcopenshell.util.element.get_material(settings["relating_type"])
+        if not new_material.is_a("IfcMaterialLayerSet"):
+            return
+        obj = IfcStore.get_element(settings["related_object"].id())
+        if not obj:
+            return
+        current_thickness = obj.dimensions.y / self.unit_scale
+        new_thickness = sum([l.LayerThickness for l in new_material.MaterialLayers])
+        if current_thickness == new_thickness:
+            return
+        self.regenerate_wall_thickness(settings["related_object"], new_thickness - current_thickness)
+
     def regenerate_wall_thickness(self, element, delta_thickness):
         parametric = ifcopenshell.util.element.get_psets(element).get("EPset_Parametric")
         if not parametric or parametric["Engine"] != "BlenderBIM.DumbWall":
             return
-        try:
-            obj = IfcStore.id_map[element.id()]
-            obj.name # In case the object has been deleted
-        except:
+
+        obj = IfcStore.get_element(element.id())
+        if not obj:
             return
 
         bm = bmesh.new()
@@ -206,6 +219,9 @@ class ActivateParametricEngine(bpy.types.Operator):
             "geometry.add_representation", IfcStore.get_file(), calculate_dumb_quantities
         )
         ifcopenshell.api.add_pre_listener(
-            "material.edit_layer", IfcStore.get_file(), DumbWallPlaner().regenerate_dumb_wall_thicknesses
+            "material.edit_layer", IfcStore.get_file(), DumbWallPlaner().regenerate_wall_thicknesses_from_layer
+        )
+        ifcopenshell.api.add_pre_listener(
+            "type.assign_type", IfcStore.get_file(), DumbWallPlaner().regenerate_wall_thicknesses_from_type
         )
         return {"FINISHED"}

src/blenderbim/blenderbim/bim/module/spatial/operator.py

@@ -38,7 +38,7 @@ class AssignContainer(bpy.types.Operator):
 
             aggregate_collection = bpy.data.collections.get(related_element.name)
 
-            relating_structure_obj = IfcStore.id_map.get(relating_structure)
+            relating_structure_obj = IfcStore.get_element(relating_structure)
             relating_collection = None
             if relating_structure_obj:
                 relating_collection = bpy.data.collections.get(relating_structure_obj.name)

src/blenderbim/blenderbim/bim/module/type/operator.py

@@ -5,6 +5,7 @@ import ifcopenshell.api
 from blenderbim.bim.ifc import IfcStore
 from ifcopenshell.api.type.data import Data
 from ifcopenshell.api.geometry.data import Data as GeometryData
+from ifcopenshell.api.material.data import Data as MaterialData
 
 
 class AssignType(bpy.types.Operator):
@@ -31,6 +32,7 @@ class AssignType(bpy.types.Operator):
             )
             Data.load(IfcStore.get_file(), oprops.ifc_definition_id)
             GeometryData.load(IfcStore.get_file(), oprops.ifc_definition_id)
+            MaterialData.load(IfcStore.get_file(), oprops.ifc_definition_id)
             representation_ids = GeometryData.products[oprops.ifc_definition_id]
             if not representation_ids:
                 pass # TODO: clear geometry? Make void? Make none type?
@@ -44,6 +46,7 @@ class AssignType(bpy.types.Operator):
                 bpy.ops.bim.switch_representation(obj=related_object.name, ifc_definition_id=representation_id)
 
         bpy.ops.bim.disable_editing_type(obj=related_object.name)
+        MaterialData.load(self.file)
         return {"FINISHED"}