Fix error toggling boundary decorations after one was removed #6088

src/bonsai/bonsai/bim/module/boundary/prop.py

@@ -70,7 +70,7 @@ class BIMObjectBoundaryProperties(PropertyGroup):
 
 
 class BIMBoundaryProperties(PropertyGroup):
-    boundaries: bpy.props.CollectionProperty(type=ObjProperty)
+    boundaries: bpy.props.CollectionProperty(type=ObjProperty, description="Decorated boundaries")
 
     if TYPE_CHECKING:
         boundaries: bpy.types.bpy_prop_collection_idprop[ObjProperty]

src/bonsai/bonsai/tool/boundary.py

@@ -96,3 +96,8 @@ class Boundary(bonsai.core.tool.Boundary):
     @classmethod
     def undecorate_boundary(cls, obj: bpy.types.Object) -> None:
         obj.show_in_front = False
+        props = cls.get_boundary_props()
+        for i in reversed(range(len(props.boundaries))):
+            if props.boundaries[i].obj == obj:
+                props.boundaries.remove(i)
+                break

src/bonsai/bonsai/tool/geometry.py

@@ -195,6 +195,7 @@ class Geometry(bonsai.core.tool.Geometry):
             return bonsai.core.drawing.remove_drawing(tool.Ifc, tool.Drawing, drawing=element)
         elif element.is_a("IfcRelSpaceBoundary"):
             ifcopenshell.api.run("boundary.remove_boundary", tool.Ifc.get(), boundary=element)
+            tool.Boundary.undecorate_boundary(obj)
             return bpy.data.objects.remove(obj)
         elif element.is_a("IfcGridAxis"):
             is_last_axis = False