Really barebones UI to list space boundaries.

src/blenderbim/blenderbim/bim/__init__.py

@@ -31,6 +31,7 @@ if bpy is not None:
         "sequence": None,
         "group": None,
         "structural": None,
+        "boundary": None,
         "material": None,
         "style": None,
         "layer": None,

src/blenderbim/blenderbim/bim/module/boundary/__init__.py

@@ -0,0 +1,14 @@
+import bpy
+from . import ui
+
+classes = (
+    ui.BIM_PT_boundary,
+)
+
+
+def register():
+    pass
+
+
+def unregister():
+    pass

src/blenderbim/blenderbim/bim/module/boundary/ui.py

@@ -0,0 +1,34 @@
+import bpy
+import blenderbim.bim.helper
+from bpy.types import Panel, UIList
+from blenderbim.bim.ifc import IfcStore
+from ifcopenshell.api.boundary.data import Data
+
+
+class BIM_PT_boundary(Panel):
+    bl_label = "IFC Space Boundaries"
+    bl_idname = "BIM_PT_boundary"
+    bl_options = {"DEFAULT_CLOSED"}
+    bl_space_type = "PROPERTIES"
+    bl_region_type = "WINDOW"
+    bl_context = "object"
+
+    @classmethod
+    def poll(cls, context):
+        if not context.active_object:
+            return False
+        props = context.active_object.BIMObjectProperties
+        if not props.ifc_definition_id:
+            return False
+        if IfcStore.get_file().by_id(props.ifc_definition_id).is_a() not in ["IfcSpace", "IfcExternalSpatialElement"]:
+            return False
+        return True
+
+    def draw(self, context):
+        self.oprops = context.active_object.BIMObjectProperties
+        if not Data.is_loaded:
+            Data.load(IfcStore.get_file())
+        for boundary_id in Data.spaces.get(self.oprops.ifc_definition_id, []):
+            boundary = Data.boundaries[boundary_id]
+            row = self.layout.row()
+            row.label(text=f"{boundary_id}", icon="GHOST_ENABLED")

src/blenderbim/blenderbim/bim/module/structural/ui.py

@@ -47,6 +47,7 @@ def draw_boundary_condition_editable_ui(layout, props):
         if attribute.is_optional:
             row.prop(attribute, "is_null", icon="RADIOBUT_OFF" if attribute.is_null else "RADIOBUT_ON", text="")
 
+
 def draw_boundary_condition_read_only_ui(layout, boundary_condition_data):
     for key, value in boundary_condition_data.items():
         if key == "id" or key == "type" or value == None:
@@ -59,7 +60,6 @@ def draw_boundary_condition_read_only_ui(layout, boundary_condition_data):
             row.label(text=str(value))
 
 
-
 class BIM_PT_structural_boundary_conditions(Panel):
     bl_label = "IFC Structural Boundary Conditions"
     bl_idname = "BIM_PT_structural_boundary_conditions"
@@ -231,7 +231,9 @@ class BIM_PT_structural_connection(Panel):
                 row.prop(self.props, "ccs_z_angle", text="Z Angle")
             else:
                 row = self.layout.row()
-                row.operator("bim.enable_editing_structural_connection_cs", text="Edit Connection CS", icon="GREASEPENCIL")
+                row.operator(
+                    "bim.enable_editing_structural_connection_cs", text="Edit Connection CS", icon="GREASEPENCIL"
+                )
         else:
             row = self.layout.row()
             row.label(text="TODO")
@@ -417,7 +419,6 @@ class BIM_PT_structural_load_cases(Panel):
         )
 
 
-
 class BIM_UL_structural_activities(UIList):
     def draw_item(self, context, layout, data, item, icon, active_data, active_propname):
         if item:
@@ -444,9 +445,7 @@ class BIM_PT_structural_loads(Panel):
         self.props = context.scene.BIMStructuralProperties
 
         row = self.layout.row(align=True)
-        row.label(
+        row.label(text="{} Structural Loads Found".format(len(Data.structural_loads)), icon="GHOST_ENABLED")
-            text="{} Structural Loads Found".format(len(Data.structural_loads)), icon="GHOST_ENABLED"
-        )
         if self.props.is_editing_loads:
             row.prop(self.props, "structural_load_types", text="")
             row.operator("bim.add_structural_load", text="", icon="ADD").ifc_class = self.props.structural_load_types

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

@@ -0,0 +1,33 @@
+class Data:
+    is_loaded = False
+    boundaries = {}
+    spaces = {}
+
+    @classmethod
+    def purge(cls):
+        cls.is_loaded = False
+        cls.boundaries = {}
+        cls.spaces = {}
+
+    @classmethod
+    def load(cls, file):
+        cls._file = file
+        for boundary in cls._file.by_type("IfcRelSpaceBoundary"):
+            data = boundary.get_info()
+            data["RelatingSpace"] = data["RelatingSpace"].id() if data["RelatingSpace"] else None
+            data["RelatedBuildingElement"] = (
+                data["RelatedBuildingElement"].id() if data["RelatedBuildingElement"] else None
+            )
+            del data["ConnectionGeometry"]
+            if cls._file.schema == "IFC2X3":
+                pass
+            else:
+                if boundary.is_a("IfcRelSpaceBoundary1stLevel"):
+                    data["ParentBoundary"] = data["ParentBoundary"].id() if data["ParentBoundary"] else None
+                if boundary.is_a("IfcRelSpaceBoundary2ndLevel"):
+                    data["CorrespondingBoundary"] = (
+                        data["CorrespondingBoundary"].id() if data["CorrespondingBoundary"] else None
+                    )
+            cls.boundaries[boundary.id()] = data
+            cls.spaces.setdefault(data["RelatingSpace"], []).append(boundary.id())
+        cls.is_loaded = True