Deleting openings or voided elements now also remove openings.

src/blenderbim/blenderbim/bim/__init__.py

@@ -1,4 +1,3 @@
-
 # BlenderBIM Add-on - OpenBIM Blender Add-on
 # Copyright (C) 2020, 2021 Dion Moult <dion@thinkmoult.com>
 #
@@ -87,6 +86,7 @@ classes = [
     operator.SetViewportShadowFromSun,
     operator.LinkIfc,
     operator.SnapSpacesTogether,
+    operator.OverrideDelete,
     prop.StrProperty,
     prop.Attribute,
     prop.BIMProperties,
@@ -105,16 +105,20 @@ classes = [
 for mod in modules.values():
     classes.extend(mod.classes)
 
+
 def menu_func_export(self, context):
     self.layout.operator(operator.ExportIFC.bl_idname, text="Industry Foundation Classes (.ifc/.ifczip/.ifcjson)")
 
+
 def menu_func_import(self, context):
     self.layout.operator(operator.ImportIFC.bl_idname, text="Industry Foundation Classes (.ifc/.ifczip/.ifcxml)")
 
+
 def on_register(scene):
     handler.setDefaultProperties(scene)
     bpy.app.handlers.depsgraph_update_post.remove(on_register)
 
+
 def register():
     for cls in classes:
         bpy.utils.register_class(cls)
@@ -141,6 +145,7 @@ def register():
     for mod in modules.values():
         mod.register()
 
+
 def unregister():
     for cls in reversed(classes):
         bpy.utils.unregister_class(cls)

src/blenderbim/blenderbim/bim/operator.py

@@ -1,4 +1,3 @@
-
 # BlenderBIM Add-on - OpenBIM Blender Add-on
 # Copyright (C) 2020, 2021 Dion Moult <dion@thinkmoult.com>
 #
@@ -31,8 +30,8 @@ from . import import_ifc
 from . import schema
 from blenderbim.bim.ifc import IfcStore
 from bpy_extras.io_utils import ImportHelper
-from mathutils import Vector, Matrix, Euler, geometry
-from math import radians, degrees, atan, tan, cos, sin
+from mathutils import Vector, Matrix, Euler
+from math import radians
 
 
 class ExportIFC(bpy.types.Operator):
@@ -726,3 +725,38 @@ class CopyAttributeToSelection(bpy.types.Operator):
                 a.name() for a in self.schema.declaration_by_name(ifc_class).all_attributes()
             ]
         return self.applicable_attributes_cache[ifc_class]
+
+
+class OverrideDelete(bpy.types.Operator):
+    bl_idname = "object.delete"
+    bl_label = "Delete"
+
+    @classmethod
+    def poll(cls, context):
+        return context.active_object is not None
+
+    def execute(self, context):
+        if IfcStore.get_file():
+            return IfcStore.execute_ifc_operator(self, context)
+        for obj in context.selected_objects:
+            bpy.data.objects.remove(obj)
+        return {"FINISHED"}
+
+    def invoke(self, context, event):
+        return context.window_manager.invoke_confirm(self, event)
+
+    def _execute(self, context):
+        for obj in context.selected_objects:
+            if obj.BIMObjectProperties.ifc_definition_id:
+                element = IfcStore.get_file().by_id(obj.BIMObjectProperties.ifc_definition_id)
+                if element.is_a("IfcOpeningElement"):
+                    self.delete_opening_element(element)
+                elif element.HasOpenings:
+                    for rel in element.HasOpenings:
+                        self.delete_opening_element(rel.RelatedOpeningElement)
+            bpy.data.objects.remove(obj)
+        return {"FINISHED"}
+
+    def delete_opening_element(self, element):
+        obj = IfcStore.get_element(element.VoidsElements[0].RelatingBuildingElement.id())
+        bpy.ops.bim.remove_opening(opening_id=element.id(), obj=obj.name)

src/blenderbim/test/bim/module/void/test_operator.py

@@ -75,3 +75,36 @@ class TestRemoveOpening(test.bim.bootstrap.NewFile):
         Then the object "IfcWall/Cube" has "8" vertices
         And the object "Cube" is not an IFC element
         """
+
+    @test.bim.bootstrap.scenario
+    def test_removing_an_opening_using_deletion(self):
+        return """
+        Given an empty IFC project
+        When the object "Cube" is selected
+        And I set "scene.BIMRootProperties.ifc_class" to "IfcWall"
+        And I press "bim.assign_class"
+        And I add a cube of size "1" at "1,0,0"
+        And the object "IfcWall/Cube" is selected
+        And additionally the object "Cube" is selected
+        And I press "bim.add_opening(opening='Cube', obj='IfcWall/Cube')"
+        And the object "IfcOpeningElement/Cube" is selected
+        And I delete the selected objects
+        Then the object "IfcWall/Cube" has no boolean difference by "IfcOpeningElement/Cube"
+        And the object "IfcWall/Cube" is not voided by "Cube"
+        """
+
+    @test.bim.bootstrap.scenario
+    def test_removing_an_opening_indirectly_by_deleting_its_building_element(self):
+        return """
+        Given an empty IFC project
+        When the object "Cube" is selected
+        And I set "scene.BIMRootProperties.ifc_class" to "IfcWall"
+        And I press "bim.assign_class"
+        And I add a cube of size "1" at "1,0,0"
+        And the object "IfcWall/Cube" is selected
+        And additionally the object "Cube" is selected
+        And I press "bim.add_opening(opening='Cube', obj='IfcWall/Cube')"
+        And the object "IfcWall/Cube" is selected
+        And I delete the selected objects
+        Then the object "Cube" is not an IFC element
+        """