See #1676. Deleting space boundaries now also removes connection geometry.

src/blenderbim/blenderbim/tool/geometry.py

@@ -71,6 +71,9 @@ class Geometry(blenderbim.core.tool.Geometry):
             return
         if element.is_a("IfcAnnotation") and element.ObjectType == "DRAWING":
             return blenderbim.core.drawing.remove_drawing(tool.Ifc, tool.Drawing, drawing=element)
+        if element.is_a("IfcRelSpaceBoundary"):
+            ifcopenshell.api.run("boundary.remove_boundary", tool.Ifc.get(), boundary=element)
+            return bpy.data.objects.remove(obj)
         if obj.users_collection and obj.users_collection[0].name == obj.name:
             parent = ifcopenshell.util.element.get_aggregate(element)
             if not parent:

src/ifcopenshell-python/ifcopenshell/api/boundary/remove_boundary.py

@@ -0,0 +1,51 @@
+# IfcOpenShell - IFC toolkit and geometry engine
+# Copyright (C) 2023 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of IfcOpenShell.
+#
+# IfcOpenShell is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# IfcOpenShell is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with IfcOpenShell.  If not, see <http://www.gnu.org/licenses/>.
+
+import ifcopenshell.util.element
+
+
+class Usecase:
+    def __init__(self, file, boundary=None):
+        """Removes a space boundary
+
+        The relating space or related building element is untouched. Only the
+        boundary and its connection geometry is removed.
+
+        :param boundary: The IfcRelSpaceBoundary you want to remove.
+        :type boundary: ifcopenshell.entity_instance.entity_instance
+        :return: None
+        :rtype: None
+
+        Example:
+
+            # A boring boundary with no geometry. Note that this boundary is
+            # invalid and does not relate to any space or building element.
+            boundary = ifcopenshell.api.run("root.create_entity", model, ifc_class="IfcRelSpaceBoundary")
+
+            # Let's remove it!
+            ifcopenshell.api.run("grid.remove_grid_axis", model, axis=axis_2)
+        """
+        self.file = file
+        self.settings = {"boundary": boundary}
+
+    def execute(self):
+        geometry = self.settings["boundary"].ConnectionGeometry
+        if geometry:
+            self.settings["boundary"].ConnectionGeometry = None
+            ifcopenshell.util.element.remove_deep2(self.file, geometry)
+        self.file.remove(self.settings["boundary"])

src/ifcopenshell-python/ifcopenshell/api/grid/remove_grid_axis.py

@@ -37,7 +37,7 @@ class Usecase:
             axis_1 = ifcopenshell.api.run("grid.create_grid_axis", model,
                 axis_tag="1", uvw_axes="VAxes", grid=grid)
 
-            # Let's create a third so we can remvoe it later
+            # Let's create a third so we can remove it later
             axis_2 = ifcopenshell.api.run("grid.create_grid_axis", model,
                 axis_tag="2", uvw_axes="VAxes", grid=grid)
 

src/ifcopenshell-python/ifcopenshell/api/root/remove_product.py

@@ -105,7 +105,7 @@ class Usecase:
                 else:
                     ifcopenshell.api.run("type.unassign_type", self.file, related_object=self.settings["product"])
             elif inverse.is_a("IfcRelSpaceBoundary"):
-                self.file.remove(inverse)
+                ifcopenshell.api.run("boundary.remove_boundary", self.file, boundary=inverse)
             elif inverse.is_a("IfcRelFillsElement"):
                 self.file.remove(inverse)
             elif inverse.is_a("IfcRelVoidsElement"):

src/ifcopenshell-python/test/api/boundary/test_remove_boundary.py

@@ -0,0 +1,35 @@
+# IfcOpenShell - IFC toolkit and geometry engine
+# Copyright (C) 2023 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of IfcOpenShell.
+#
+# IfcOpenShell is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# IfcOpenShell is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with IfcOpenShell.  If not, see <http://www.gnu.org/licenses/>.
+
+import test.bootstrap
+import ifcopenshell.api
+
+
+class TestRemoveBoundary(test.bootstrap.IFC4):
+    def test_run(self):
+        boundary = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcRelSpaceBoundary")
+        ifcopenshell.api.run("boundary.remove_boundary", self.file, boundary=boundary)
+        assert not self.file.by_type("IfcRelSpaceBoundary")
+
+    def test_removing_connection_geometry(self):
+        geometry = self.file.createIfcConnectionSurfaceGeometry()
+        boundary = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcRelSpaceBoundary")
+        boundary.ConnectionGeometry = geometry
+        ifcopenshell.api.run("boundary.remove_boundary", self.file, boundary=boundary)
+        assert not self.file.by_type("IfcRelSpaceBoundary")
+        assert not self.file.by_type("IfcConnectionSurfaceGeometry")