win: collect underscore-prefixed runtime plugin DLLs in build artifacts

Runtime plugins are canonically named `ifcopenshell_<kind>_<name>` (decorated_basename() in src/plugin/plugin.cpp, and the OUTPUT_NAME properties of the plugin targets), but the archive collection filtered on the dotted `ifcopenshell.` prefix, which matches only the core shared libraries. Every load-by-name plugin was therefore silently dropped from every win64 / win-arm64 zip.

Accept both prefixes, and extend the geometry-writer exclusion to the underscore form so the per-schema writers keep their existing Python-package-only treatment.

Fixes #9301

src/bonsai/bonsai/bim/handler.py

@@ -59,7 +59,6 @@ from bonsai.bim.module.model.decorator import (
 )
 from bonsai.bim.module.model.wall import WallGizmoPreviewDecorator
 from bonsai.bim.module.nest.decorator import NestDecorator
-from bonsai.tool.spatial import install_geom_cache_handlers, uninstall_geom_cache_handlers
 
 cwd = os.path.dirname(os.path.realpath(__file__))
 global_subscription_owner = object()
@@ -122,25 +121,9 @@ def name_callback(obj: Union[bpy.types.Object, bpy.types.Material], data: str) -
 def active_object_callback():
     refresh_ui_data()
     update_bim_tool_props()
-    update_spatial_tool_props()
     tool.Geometry.sync_item_positions()
 
 
-def update_spatial_tool_props():
-    """Sync ``BIMSpatialDecompositionProperties.space_height`` with the
-    active object's height when it is an ``IfcSpace``, otherwise reset to
-    the 3m default. Called from the msgbus active-object callback so Scene
-    property writes happen outside ``draw()``."""
-    obj = tool.Blender.get_active_object()
-    props = tool.Spatial.get_spatial_props()
-    if obj:
-        element = tool.Ifc.get_entity(obj)
-        if element and element.is_a("IfcSpace"):
-            props.space_height = obj.dimensions.z
-            return
-    props.space_height = 3
-
-
 def update_bim_tool_props():
     """Selection-driven BIM Tool sync: re-target user-intent enums
     (ifc_class, relating_type_id) AND refresh header values
@@ -545,7 +528,6 @@ def _install_viewport_overlays() -> None:
     ArrayPreviewDecorator.uninstall()
     ArraySelectionHighlightDecorator.uninstall()
     uninstall_decorator_cache_handlers()
-    uninstall_geom_cache_handlers()
     try:
         if georeference_props.should_visualise:
             GeoreferenceDecorator.install(bpy.context)
@@ -588,7 +570,6 @@ def _install_viewport_overlays() -> None:
         ArrayPreviewDecorator.install(bpy.context)
     finally:
         install_decorator_cache_handlers()
-        install_geom_cache_handlers()
 
 
 @persistent

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

@@ -23,7 +23,6 @@ from . import operator, prop, ui
 classes = (
     operator.AddBoundary,
     operator.ColourByRelatedBuildingElement,
-    operator.CopyBoundaryAttributeToSelection,
     operator.DecorateBoundaries,
     operator.DisableEditingBoundary,
     operator.DisableEditingBoundaryGeometry,

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

@@ -39,7 +39,6 @@ from ifcopenshell.util.shape_builder import ShapeBuilder
 from mathutils import Matrix, Vector
 
 import bonsai.bim.import_ifc as import_ifc
-import bonsai.core.attribute as core
 import bonsai.core.geometry
 import bonsai.tool as tool
 from bonsai.bim.ifc import IfcStore
@@ -423,32 +422,6 @@ class EditBoundaryAttributes(bpy.types.Operator, tool.Ifc.Operator):
         return {"FINISHED"}
 
 
-class CopyBoundaryAttributeToSelection(bpy.types.Operator, tool.Ifc.Operator):
-    bl_idname = "bim.copy_boundary_attribute_to_selection"
-    bl_label = "Copy Boundary Attribute To Selection"
-    bl_options = {"REGISTER", "UNDO"}
-    name: bpy.props.StringProperty()
-
-    def _execute(self, context):
-        obj = tool.Blender.get_active_object()
-        assert obj
-        bprops = tool.Boundary.get_object_boundary_props(obj)
-        if self.name in EDITABLE_ATTRIBUTES:
-            blender_prop = EDITABLE_ATTRIBUTES[self.name]
-            blender_obj = getattr(bprops, blender_prop, None)
-            value = tool.Ifc.get_entity(blender_obj) if blender_obj else None
-        elif self.name == "PhysicalOrVirtualBoundary":
-            value = bprops.physical_or_virtual
-        elif self.name == "InternalOrExternalBoundary":
-            value = bprops.internal_or_external
-        else:
-            return
-        total = core.copy_attribute_to_selection(
-            tool.Ifc, tool.Blender, tool.Root, tool.Spatial, name=self.name, value=value
-        )
-        self.report({"INFO"}, f"Attribute was successfully copied to {total} elements.")
-
-
 class UpdateBoundaryGeometry(bpy.types.Operator, tool.Ifc.Operator):
     bl_idname = "bim.update_boundary_geometry"
     bl_label = "Update Boundary Geometry"

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

@@ -77,14 +77,10 @@ class BIM_PT_Boundary(Panel):
             self.draw_relation_editor(boundary, "RelatedBuildingElement", "related_building_element")
             self.draw_relation_editor(boundary, "ParentBoundary", "parent_boundary")
             self.draw_relation_editor(boundary, "CorrespondingBoundary", "corresponding_boundary")
-            row = self.layout.row(align=True)
+            row = self.layout.row()
             row.prop(self.bprops, "physical_or_virtual")
-            op = row.operator("bim.copy_boundary_attribute_to_selection", text="", icon="COPYDOWN")
-            op.name = "PhysicalOrVirtualBoundary"
-            row = self.layout.row(align=True)
+            row = self.layout.row()
             row.prop(self.bprops, "internal_or_external")
-            op = row.operator("bim.copy_boundary_attribute_to_selection", text="", icon="COPYDOWN")
-            op.name = "InternalOrExternalBoundary"
         else:
             row = self.layout.row()
             row.operator("bim.enable_editing_boundary", icon="GREASEPENCIL", text="Edit")
@@ -129,8 +125,6 @@ class BIM_PT_Boundary(Panel):
         if hasattr(boundary, ifc_attribute):
             row = self.layout.row(align=True)
             row.prop(self.bprops, blender_property)
-            op = row.operator("bim.copy_boundary_attribute_to_selection", text="", icon="COPYDOWN")
-            op.name = ifc_attribute
 
 
 class BIM_PT_SpaceBoundaries(Panel):

src/bonsai/bonsai/bim/module/model/__init__.py

@@ -178,7 +178,6 @@ classes = (
     covering.RegenSelectedCoveringObject,
     space.ToggleSpaceVisibility,
     space.ToggleHideSpaces,
-    space.ApplySpaceHeightToSelection,
     mep.FitFlowSegments,
     mep.RegenerateDistributionElement,
     prop.SnapMousePoint,

src/bonsai/bonsai/bim/module/model/space.py

@@ -18,9 +18,7 @@
 
 
 import bpy
-import ifcopenshell.util.unit
 
-import bonsai.core.geometry as core_geometry
 import bonsai.core.spatial as core
 import bonsai.tool as tool
 
@@ -117,47 +115,3 @@ class ToggleHideSpaces(bpy.types.Operator):
     def execute(self, context):
         core.toggle_hide_spaces(tool.Ifc, tool.Spatial)
         return {"FINISHED"}
-
-
-class ApplySpaceHeightToSelection(bpy.types.Operator, tool.Ifc.Operator):
-    bl_idname = "bim.apply_space_height_to_selection"
-    bl_label = "Apply Space Height To Selection"
-    bl_options = {"REGISTER", "UNDO"}
-    bl_description = "Apply the space height value to all selected spaces without regenerating their footprint"
-
-    @classmethod
-    def poll(cls, context):
-        selected_spaces = [
-            obj
-            for obj in context.selected_objects
-            if (element := tool.Ifc.get_entity(obj)) and element.is_a("IfcSpace")
-        ]
-        if not selected_spaces:
-            cls.poll_message_set("No spaces selected.")
-            return False
-        return True
-
-    def _execute(self, context):
-        ifc_file = tool.Ifc.get()
-        si_conversion = ifcopenshell.util.unit.calculate_unit_scale(ifc_file)
-        depth_ifc = tool.Spatial.get_spatial_props().space_height / si_conversion
-        total = 0
-        for obj in context.selected_objects:
-            element = tool.Ifc.get_entity(obj)
-            if not element or not element.is_a("IfcSpace"):
-                continue
-            body = tool.Geometry.get_body_representation(element)
-            if not body:
-                continue
-            extrusion = tool.Model.get_extrusion(body)
-            if not extrusion:
-                continue
-            extrusion.Depth = depth_ifc
-            core_geometry.switch_representation(
-                tool.Ifc,
-                tool.Geometry,
-                obj=obj,
-                representation=body,
-            )
-            total += 1
-        self.report({"INFO"}, f"Height applied to {total} spaces.")

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

@@ -24,7 +24,6 @@ from bpy.props import (
     BoolProperty,
     CollectionProperty,
     EnumProperty,
-    FloatProperty,
     IntProperty,
     PointerProperty,
     StringProperty,
@@ -278,17 +277,6 @@ class BIMSpatialDecompositionProperties(PropertyGroup):
     should_include_children: BoolProperty(
         name="Should Include Children", default=True, update=update_should_include_children
     )
-    space_height: FloatProperty(
-        name="Space Height",
-        default=3,
-        subtype="DISTANCE",
-        description="Space height in meters. Auto-detected on generation unless forced. Used as fallback.",
-    )
-    force_space_height: BoolProperty(
-        name="Force Height",
-        default=False,
-        description="If enabled, uses the height value directly and skips auto-detection",
-    )
 
     if TYPE_CHECKING:
         is_locked: bool
@@ -306,8 +294,6 @@ class BIMSpatialDecompositionProperties(PropertyGroup):
         subelement_class: str
         default_container: int
         should_include_children: bool
-        space_height: float
-        force_space_height: bool
 
     @property
     def active_container(self) -> Union[BIMContainer, None]:

src/bonsai/bonsai/bim/module/spatial/workspace.py

@@ -83,14 +83,9 @@ class SpatialToolUI:
 
     @classmethod
     def draw_default_interface(cls, context):
-        spatial_props = tool.Spatial.get_spatial_props()
         row = cls.layout.row(align=True)
         row.prop(data=cls.model_props, property="rl3", text="RL")
         row = cls.layout.row(align=True)
-        row.prop(data=spatial_props, property="space_height", text="Height")
-        row.prop(data=spatial_props, property="force_space_height", text="", icon="PINNED")
-        row.operator("bim.apply_space_height_to_selection", text="", icon="COPYDOWN")
-        row = cls.layout.row(align=True)
         op_name = lambda op: op.get_rna_type().name
         if AuthoringData.data["active_class"] == "IfcWall" and context.selected_objects:
             add_layout_hotkey(

src/bonsai/bonsai/core/attribute.py

@@ -18,7 +18,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any
+from typing import TYPE_CHECKING, Union
 
 if TYPE_CHECKING:
 
@@ -31,7 +31,7 @@ def copy_attribute_to_selection(
     root: type[tool.Root],
     spatial: type[tool.Spatial],
     name: str,
-    value: Any,
+    value: Union[str, None],
 ) -> int:
     total_changed = 0
     has_edited_spatial_name = False

src/bonsai/bonsai/core/covering.py

@@ -46,7 +46,7 @@ def add_instance_flooring_covering_from_cursor(
     else:
         x, y, z, h, mat = spatial.get_x_y_z_h_mat_from_cursor()
 
-    space_polygon, _ = spatial.get_space_polygon_from_context_visible_objects(x, y)
+    space_polygon = spatial.get_space_polygon_from_context_visible_objects(x, y)
 
     if isinstance(space_polygon, str):
         return
@@ -81,7 +81,7 @@ def add_instance_ceiling_covering_from_cursor(
         x, y, z, h, mat = spatial.get_x_y_z_h_mat_from_cursor()
         ceiling_height = covering.get_z_from_ceiling_height()
 
-    space_polygon, _ = spatial.get_space_polygon_from_context_visible_objects(x, y)
+    space_polygon = spatial.get_space_polygon_from_context_visible_objects(x, y)
 
     if isinstance(space_polygon, str):
         return
@@ -106,7 +106,7 @@ def regen_selected_covering_object(root: type[tool.Root], spatial: type[tool.Spa
     else:
         assert False, "Object has to be active and selected."
 
-    space_polygon, _ = spatial.get_space_polygon_from_context_visible_objects(x, y)
+    space_polygon = spatial.get_space_polygon_from_context_visible_objects(x, y)
 
     if isinstance(space_polygon, str):
         return

src/bonsai/bonsai/core/spatial.py

@@ -206,7 +206,7 @@ def generate_space(
     else:
         x, y, z, h, mat = spatial.get_x_y_z_h_mat_from_cursor()
 
-    space_polygon, bounding_walls = spatial.get_space_polygon_from_context_visible_objects(x, y)
+    space_polygon = spatial.get_space_polygon_from_context_visible_objects(x, y)
 
     if isinstance(space_polygon, str):
         if space_polygon == "NO POLYGONS FOUND":
@@ -220,17 +220,7 @@ def generate_space(
         else:
             assert space_polygon
 
-    props = spatial.get_spatial_props()
-    if props.force_space_height:
-        h = props.space_height
-    else:
-        auto_h = spatial.get_auto_space_height(space_polygon, z, bounding_walls)
-        if auto_h is not None and auto_h > 0:
-            h = auto_h
-
     if element and element.is_a("IfcSpace"):
-        assert active_obj
-        active_obj.location.z = z
         spatial.set_space_representation_from_polygon(active_obj, element, space_polygon, h, polygon_is_si=True)
     else:
         if relating_type:
@@ -258,25 +248,11 @@ def generate_spaces_from_walls(
     z = spatial.get_active_obj_z()
     h = spatial.get_active_obj_height()
 
-    bounding_walls = [
-        element
-        for obj in spatial.get_selected_objects()
-        if (element := ifc.get_entity(obj)) and element.is_a("IfcWall")
-    ]
-
     union = spatial.get_union_shape_from_selected_objects()
 
-    props = spatial.get_spatial_props()
     for i, linear_ring in enumerate(union.interiors):
         poly = spatial.get_buffered_poly_from_linear_ring(linear_ring)
 
-        if props.force_space_height:
-            h = props.space_height
-        else:
-            auto_h = spatial.get_auto_space_height(poly, z, bounding_walls)
-            if auto_h is not None and auto_h > 0:
-                h = auto_h
-
         name = "Space" + str(i)
 
         obj = spatial.create_object(name)

src/bonsai/bonsai/tool/spatial.py

@@ -19,7 +19,6 @@
 from __future__ import annotations
 
 import json
-import multiprocessing
 from collections import defaultdict
 from collections.abc import Generator, Iterable
 from typing import TYPE_CHECKING, Any, Literal, Optional, Union
@@ -35,9 +34,7 @@ import ifcopenshell.util.classification
 import ifcopenshell.util.element
 import ifcopenshell.util.placement
 import ifcopenshell.util.representation
-import ifcopenshell.util.shape
 import ifcopenshell.util.shape_builder
-import ifcopenshell.util.space
 import ifcopenshell.util.type
 import ifcopenshell.util.unit
 import numpy as np
@@ -61,52 +58,8 @@ if TYPE_CHECKING:
         BIMSpatialDecompositionProperties,
     )
 
-_GEOM_CACHE_TOKEN = 0
-
-
-@bpy.app.handlers.persistent
-def _bump_geom_cache_token(*args) -> None:
-    global _GEOM_CACHE_TOKEN
-    if len(args) >= 2:
-        depsgraph = args[1]
-        if depsgraph is not None and hasattr(depsgraph, "updates"):
-            if not any(
-                (getattr(u, "is_updated_geometry", False) or getattr(u, "is_updated_transform", False))
-                and hasattr(u, "id")
-                and isinstance(u.id, bpy.types.Object)
-                for u in depsgraph.updates
-            ):
-                return
-    _GEOM_CACHE_TOKEN += 1
-
-
-def install_geom_cache_handlers() -> None:
-    for hook in (
-        bpy.app.handlers.depsgraph_update_post,
-        bpy.app.handlers.undo_post,
-        bpy.app.handlers.redo_post,
-        bpy.app.handlers.load_post,
-    ):
-        if _bump_geom_cache_token not in hook:
-            hook.append(_bump_geom_cache_token)
-
-
-def uninstall_geom_cache_handlers() -> None:
-    for hook in (
-        bpy.app.handlers.depsgraph_update_post,
-        bpy.app.handlers.undo_post,
-        bpy.app.handlers.redo_post,
-        bpy.app.handlers.load_post,
-    ):
-        try:
-            hook.remove(_bump_geom_cache_token)
-        except ValueError:
-            pass
-
 
 class Spatial(bonsai.core.tool.Spatial):
-    _geom_cache: dict = {}
-
     @classmethod
     def get_spatial_props(cls) -> BIMSpatialDecompositionProperties:
         return bpy.context.scene.BIMSpatialDecompositionProperties
@@ -802,114 +755,29 @@ class Spatial(bonsai.core.tool.Spatial):
 
     # HERE STARTS SPATIAL TOOL
 
-    @classmethod
-    def get_or_build_geom_cache(cls) -> dict:
-        """Build or return a cached dict of IFC element shapes for space generation.
-
-        The cache is keyed on ``_GEOM_CACHE_TOKEN`` which is bumped by a
-        ``depsgraph_update_post`` handler when any Object geometry or transform
-        changes, and on undo/redo/load. This means the cache survives space
-        generations (which don't change Object geometry) but is correctly
-        invalidated when a user moves or edits a wall, slab, etc.
-
-        :return: ``{"shapes": {id: {"verts": ndarray, "faces": ndarray, "bottom_z": float, "top_z": float}}, "token": int}``
-        """
-        global _GEOM_CACHE_TOKEN
-        cached = cls._geom_cache.get("current")
-        if cached and cached["token"] == _GEOM_CACHE_TOKEN:
-            return cached
-
-        ifc_file = tool.Ifc.get()
-        include = []
-        for ifc_class in ifcopenshell.util.space.BOUNDING_CLASSES + ifcopenshell.util.space.HEIGHT_DETECTION_CLASSES:
-            include.extend(ifc_file.by_type(ifc_class))
-
-        settings = ifcopenshell.geom.settings()
-        settings.set("disable-opening-subtractions", True)
-        settings.set("use-world-coords", True)
-
-        shapes = {}
-        iterator = ifcopenshell.geom.iterator(settings, ifc_file, multiprocessing.cpu_count(), include=include)
-        if iterator.initialize():
-            while True:
-                shape = iterator.get()
-                verts = ifcopenshell.util.shape.get_shape_vertices(shape, shape.geometry)
-                faces = ifcopenshell.util.shape.get_faces(shape.geometry)
-                zs = verts[:, 2]
-                shapes[shape.id] = {
-                    "verts": verts,
-                    "faces": faces,
-                    "bottom_z": float(zs.min()),
-                    "top_z": float(zs.max()),
-                }
-                if not iterator.next():
-                    break
-
-        cache = {"shapes": shapes, "token": _GEOM_CACHE_TOKEN}
-        cls._geom_cache["current"] = cache
-        return cache
-
     @classmethod
     def is_bounding_class(cls, visible_element: ifcopenshell.entity_instance) -> bool:
-        for ifc_class in ifcopenshell.util.space.BOUNDING_CLASSES:
+        for ifc_class in ["IfcWall", "IfcColumn", "IfcMember", "IfcVirtualElement", "IfcPlate"]:
             if visible_element.is_a(ifc_class):
                 return True
         return False
 
     @classmethod
-    def get_boundary_lines_from_ifc_elements(
-        cls,
-        cut_z: float,
-    ) -> tuple[list[shapely.LineString], list[ifcopenshell.entity_instance]]:
-        """Generate boundary lines by bisecting IFC element geometry with a horizontal plane.
-
-        Uses the class-level geometry cache (parallel iterator) instead of
-        iterating Blender visible objects. Works without any Blender objects
-        being loaded.
-
-        :param cut_z: Z elevation of the cutting plane in world coordinates.
-        :return: (boundary_lines, bounding_elements)
-        """
-        cache = cls.get_or_build_geom_cache()
-        return ifcopenshell.util.space.get_boundary_lines(tool.Ifc.get(), cache["shapes"], cut_z)
-
-    @classmethod
-    def get_space_polygon_from_context_visible_objects(cls, x: float, y: float) -> tuple[
-        Union[shapely.Polygon, Literal["NO POLYGONS FOUND", "NO POLYGON FOR POINT"]],
-        list[ifcopenshell.entity_instance],
-    ]:
-        props = tool.Model.get_model_props()
-        calculation_rl = props.rl3
-        container = tool.Root.get_default_container()
-        container_obj = tool.Ifc.get_object(container)
-        cut_z = container_obj.matrix_world.translation.z + calculation_rl
-
-        boundary_lines, bounding_elements = cls.get_boundary_lines_from_ifc_elements(cut_z)
-        polygon, _ = ifcopenshell.util.space.get_space_polygon(boundary_lines, x, y)
-        if isinstance(polygon, str):
-            return polygon, []
-        return polygon, bounding_elements
-
-    @classmethod
-    def get_auto_space_height(
-        cls,
-        space_polygon: shapely.Polygon,
-        base_z: float,
-        bounding_walls: list[ifcopenshell.entity_instance],
-    ) -> Optional[float]:
-        """Auto-detect space height from elements above using IFC geometry.
-
-        Delegates to :func:`ifcopenshell.util.space.get_auto_space_height`.
-
-        :param space_polygon: The space footprint polygon in world XY.
-        :param base_z: The space's base Z in world coordinates.
-        :param bounding_walls: List of IFC wall elements bounding the space.
-        :return: Detected height in SI (meters), or None if nothing found.
-        """
-        cache = cls.get_or_build_geom_cache()
-        return ifcopenshell.util.space.get_auto_space_height(
-            tool.Ifc.get(), cache["shapes"], space_polygon, base_z, bounding_walls
-        )
+    def get_space_polygon_from_context_visible_objects(
+        cls, x: float, y: float
+    ) -> Union[shapely.Polygon, Literal["NO POLYGONS FOUND", "NO POLYGON FOR POINT"]]:
+        boundary_lines = cls.get_boundary_lines_from_context_visible_objects()
+        unioned_boundaries = shapely.union_all(shapely.GeometryCollection(boundary_lines))
+        closed_polygons = shapely.polygonize(unioned_boundaries.geoms)
+        if not closed_polygons:
+            return "NO POLYGONS FOUND"
+        space_polygon = None
+        for polygon in closed_polygons.geoms:
+            if shapely.contains_xy(polygon, x, y):
+                space_polygon = shapely.force_3d(polygon)
+        if space_polygon is None:
+            return "NO POLYGON FOR POINT"
+        return space_polygon
 
     @classmethod
     def debug_shape(cls, foo: shapely.Polygon) -> None:
@@ -942,9 +810,7 @@ class Spatial(bonsai.core.tool.Spatial):
         bpy.context.view_layer.update()
 
     @classmethod
-    def get_boundary_lines_from_context_visible_objects(
-        cls,
-    ) -> tuple[list[shapely.LineString], list[ifcopenshell.entity_instance]]:
+    def get_boundary_lines_from_context_visible_objects(cls) -> list[shapely.LineString]:
         props = tool.Model.get_model_props()
         calculation_rl = props.rl3
         container = tool.Root.get_default_container()
@@ -952,7 +818,6 @@ class Spatial(bonsai.core.tool.Spatial):
         cut_point = container_obj.matrix_world.translation.copy() + Vector((0, 0, calculation_rl))
         cut_normal = Vector((0, 0, 1))
         boundary_lines = []
-        bounding_elements = []
 
         for obj in bpy.context.visible_objects:
             visible_element = tool.Ifc.get_entity(obj)
@@ -966,7 +831,6 @@ class Spatial(bonsai.core.tool.Spatial):
             ):
                 continue
 
-            bounding_elements.append(visible_element)
             old_mesh = obj.data
             assert isinstance(old_mesh, bpy.types.Mesh)
             if visible_element.HasOpenings:
@@ -1006,7 +870,7 @@ class Spatial(bonsai.core.tool.Spatial):
                 start, end = tool.Drawing.extend_line(start, end, 0.05)
                 boundary_lines.append(shapely.LineString([start, end]))
 
-        return boundary_lines, bounding_elements
+        return boundary_lines
 
     @classmethod
     def get_gross_mesh_from_element(cls, visible_element: ifcopenshell.entity_instance) -> bpy.types.Mesh:

src/bonsai/bonsai/tool/wall.py

@@ -245,9 +245,16 @@ class Wall(bonsai.core.tool.Wall):
     @classmethod
     def iter_wall_slab_connections(cls, wall: ifcopenshell.entity_instance):
         """Yield ``(slab, rel)`` tuples for every ``IfcRelConnectsElements(TOP)``
-        connecting a slab to this wall. Delegates to
-        :func:`ifcopenshell.util.element.iter_top_connections`."""
-        yield from ifcopenshell.util.element.iter_top_connections(wall)
+        connecting a slab to this wall — the rel kind ``extend_walls_to_underside``
+        creates. Walks ``wall.ConnectedFrom`` because the slab is the relating
+        side of the TOP rel."""
+        for rel in getattr(wall, "ConnectedFrom", []) or ():
+            if not rel.is_a("IfcRelConnectsElements") or rel.Description != "TOP":
+                continue
+            slab = rel.RelatingElement
+            if slab is None:
+                continue
+            yield slab, rel
 
     @classmethod
     def iter_slab_wall_connections(cls, slab: ifcopenshell.entity_instance):

src/bonsai/test/core/test_covering.py

@@ -1,112 +0,0 @@
-# Bonsai - OpenBIM Blender Add-on
-# Copyright (C) 2021 Dion Moult <dion@thinkmoult.com>
-#
-# This file is part of Bonsai.
-#
-# Bonsai is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# Bonsai 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 General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.
-#
-# This file was generated with the assistance of an AI coding tool.
-
-import pytest
-
-import bonsai
-import bonsai.core.covering as subject
-import bonsai.core.tool
-from test.core.bootstrap import Prophecy, ifc, root, spatial
-
-# NOTE: The Prophecy mocking framework serialises call arguments as JSON,
-# which means shapely geometry objects cannot be passed through mocked
-# calls.  We use the plain integer 42 as a serialisable stand-in for the
-# polygon return value; the test verifies the unpack behaviour (that the
-# polygon-like scalar 42 reaches set_covering_representation_from_polygon
-# instead of the tuple (42, []) which old code would have passed).
-
-
-@pytest.fixture
-def covering():
-    prophet = Prophecy(bonsai.core.tool.Covering)
-    yield prophet
-    prophet.verify()
-
-
-class TestAddInstanceFlooringCoveringFromCursor:
-    def test_run(self, ifc, root, spatial):
-        root.get_default_container().should_be_called().will_return("container")
-        spatial.get_active_obj().should_be_called().will_return(None)
-        spatial.get_selected_objects().should_be_called().will_return([])
-        spatial.get_relating_type_id().should_be_called().will_return(0)
-        spatial.get_x_y_z_h_mat_from_cursor().should_be_called().will_return((0, 0, 0, 3, None))
-
-        spatial.get_space_polygon_from_context_visible_objects(0, 0).should_be_called().will_return((42, []))
-        spatial.create_object("Covering").should_be_called().will_return("mock_obj")
-        spatial.set_obj_origin_to_cursor_position_and_zero_elevation("mock_obj").should_be_called()
-        spatial.translate_obj_to_z_location("mock_obj", 0).should_be_called()
-        spatial.assign_type_to_obj("mock_obj").should_be_called()
-        spatial.set_covering_representation_from_polygon("mock_obj", 42, polygon_is_si=True).should_be_called()
-
-        subject.add_instance_flooring_covering_from_cursor(ifc, root, spatial)
-
-    def test_raises_when_no_default_container(self, ifc, root, spatial):
-        root.get_default_container().should_be_called().will_return(None)
-        with pytest.raises(subject.NoDefaultContainer):
-            subject.add_instance_flooring_covering_from_cursor(ifc, root, spatial)
-
-
-class TestAddInstanceCeilingCoveringFromCursor:
-    def test_run(self, ifc, root, covering, spatial):
-        root.get_default_container().should_be_called().will_return("container")
-        spatial.get_active_obj().should_be_called().will_return(None)
-        spatial.get_selected_objects().should_be_called().will_return([])
-        spatial.get_relating_type_id().should_be_called().will_return(0)
-        covering.get_z_from_ceiling_height().should_be_called().will_return(3.0)
-        spatial.get_x_y_z_h_mat_from_cursor().should_be_called().will_return((0, 0, 0, 3, None))
-
-        spatial.get_space_polygon_from_context_visible_objects(0, 0).should_be_called().will_return((42, []))
-        spatial.create_object("Covering").should_be_called().will_return("mock_obj")
-        spatial.set_obj_origin_to_cursor_position_and_zero_elevation("mock_obj").should_be_called()
-        spatial.translate_obj_to_z_location("mock_obj", 3.0).should_be_called()
-        spatial.assign_type_to_obj("mock_obj").should_be_called()
-        spatial.set_covering_representation_from_polygon("mock_obj", 42, polygon_is_si=True).should_be_called()
-
-        subject.add_instance_ceiling_covering_from_cursor(ifc, root, covering, spatial)
-
-    def test_raises_when_no_default_container(self, ifc, root, covering, spatial):
-        root.get_default_container().should_be_called().will_return(None)
-        with pytest.raises(subject.NoDefaultContainer):
-            subject.add_instance_ceiling_covering_from_cursor(ifc, root, covering, spatial)
-
-
-class TestRegenSelectedCoveringObject:
-    def test_run(self, root, spatial):
-        root.get_default_container().should_be_called().will_return("container")
-        spatial.get_active_obj().should_be_called().will_return("active")
-        spatial.get_selected_objects().should_be_called().will_return(["active"])
-        spatial.get_x_y_z_h_mat_from_obj("active").should_be_called().will_return((2, 3, 1, 3, None))
-
-        spatial.get_space_polygon_from_context_visible_objects(2, 3).should_be_called().will_return((42, []))
-        spatial.set_covering_representation_from_polygon("active", 42, polygon_is_si=True).should_be_called()
-
-        subject.regen_selected_covering_object(root, spatial)
-
-    def test_raises_when_no_default_container(self, root, spatial):
-        root.get_default_container().should_be_called().will_return(None)
-        with pytest.raises(subject.NoDefaultContainer):
-            subject.regen_selected_covering_object(root, spatial)
-
-    def test_raises_when_no_active_selected(self, root, spatial):
-        root.get_default_container().should_be_called().will_return("container")
-        spatial.get_active_obj().should_be_called().will_return(None)
-        spatial.get_selected_objects().should_be_called().will_return([])
-        with pytest.raises(AssertionError):
-            subject.regen_selected_covering_object(root, spatial)

src/bonsai/test/tool/test_spatial.py

@@ -24,14 +24,12 @@ import ifcopenshell.api.feature
 import ifcopenshell.api.nest
 import ifcopenshell.api.root
 import ifcopenshell.api.spatial
-import ifcopenshell.util.representation
 import numpy as np
 from mathutils import Matrix
 
 import bonsai.core.tool
 import bonsai.tool as tool
 from bonsai.tool.spatial import Spatial as subject
-from bonsai.tool.spatial import _bump_geom_cache_token
 from test.bim.bootstrap import NewFile
 
 
@@ -260,44 +258,17 @@ class TestSelectProducts(NewFile):
         assert obj in bpy.context.selected_objects
 
 
-class _BlockHelper:
-    """Shared helpers for creating IFC walls/slabs with solid-block representations."""
-
-    @staticmethod
-    def create_wall(ifc, height=10.0):
-        """Create an IFC wall with a 10x10x{height} block representation from z=0."""
-        ctx = ifcopenshell.util.representation.get_context(ifc, "Model", "Body", "MODEL_VIEW")
-        wall = ifcopenshell.api.root.create_entity(ifc, ifc_class="IfcWall")
-        placement_2d = ifc.createIfcAxis2Placement2D(ifc.createIfcCartesianPoint([0.0, 0.0]))
-        profile = ifc.createIfcRectangleProfileDef("AREA", None, placement_2d, 10.0, 10.0)
-        placement_3d = ifc.createIfcAxis2Placement3D(ifc.createIfcCartesianPoint([-5.0, -5.0, 0.0]))
-        extrusion = ifc.createIfcExtrudedAreaSolid(
-            profile, placement_3d, ifc.createIfcDirection([0.0, 0.0, 1.0]), height
-        )
-        shape_rep = ifc.createIfcShapeRepresentation(ctx, "Body", "SweptSolid", [extrusion])
-        wall.Representation = ifc.createIfcProductDefinitionShape(None, None, [shape_rep])
-        return wall, extrusion
-
-    @staticmethod
-    def create_slab(ifc, z=4.0):
-        """Create an IfcSlab with a 12x12x1.0 block representation at bottom_z={z}."""
-        ctx = ifcopenshell.util.representation.get_context(ifc, "Model", "Body", "MODEL_VIEW")
-        slab = ifcopenshell.api.root.create_entity(ifc, ifc_class="IfcSlab")
-        placement_2d = ifc.createIfcAxis2Placement2D(ifc.createIfcCartesianPoint([0.0, 0.0]))
-        profile = ifc.createIfcRectangleProfileDef("AREA", None, placement_2d, 12.0, 12.0)
-        placement_3d = ifc.createIfcAxis2Placement3D(ifc.createIfcCartesianPoint([-6.0, -6.0, z]))
-        extrusion = ifc.createIfcExtrudedAreaSolid(profile, placement_3d, ifc.createIfcDirection([0.0, 0.0, 1.0]), 1.0)
-        shape_rep = ifc.createIfcShapeRepresentation(ctx, "Body", "SweptSolid", [extrusion])
-        slab.Representation = ifc.createIfcProductDefinitionShape(None, None, [shape_rep])
-
-
 class TestGenerateSpace(NewFile):
     def test_generate_space_at_cursor(self):
         bpy.ops.bim.create_project()
         ifc = tool.Ifc.get()
-        # The wall block spans z=0..10, bisects to a 10x10 polygon at cut_z.
-        _BlockHelper.create_wall(ifc, height=10.0)
-        bpy.context.scene.cursor.location = (0, 0, 0)
+        scene = bpy.context.scene
+        product = ifcopenshell.api.root.create_entity(ifc, ifc_class="IfcWall")
+        bpy.ops.mesh.primitive_cube_add(size=10, location=(0, 0, 4))
+        obj = bpy.data.objects["Cube"]
+        scene.collection.objects.link(obj)
+        tool.Ifc.link(product, obj)
+        scene.cursor.location = (0, 0, 0)
 
         bpy.ops.bim.generate_space()
         space = bpy.data.objects["IfcSpace/Space"]
@@ -321,8 +292,13 @@ class TestGenerateSpace(NewFile):
     def test_regenerate_space_preserves_z_location(self):
         bpy.ops.bim.create_project()
         ifc = tool.Ifc.get()
-        _BlockHelper.create_wall(ifc, height=10.0)
-        bpy.context.scene.cursor.location = (0, 0, 0)
+        scene = bpy.context.scene
+        product = ifcopenshell.api.root.create_entity(ifc, ifc_class="IfcWall")
+        bpy.ops.mesh.primitive_cube_add(size=10, location=(0, 0, 4))
+        obj = bpy.data.objects["Cube"]
+        scene.collection.objects.link(obj)
+        tool.Ifc.link(product, obj)
+        scene.cursor.location = (0, 0, 0)
 
         bpy.ops.bim.generate_space()
         space = bpy.data.objects["IfcSpace/Space"]
@@ -331,158 +307,8 @@ class TestGenerateSpace(NewFile):
 
         bpy.context.view_layer.objects.active = space
         space.select_set(True)
+        obj.select_set(False)
 
         bpy.ops.bim.generate_space()
 
         assert np.isclose(space.location.z, 5), f"Expected z=5, got {space.location.z}"
-
-    def test_auto_space_height_from_slab_above(self):
-        bpy.ops.bim.create_project()
-        ifc = tool.Ifc.get()
-        _BlockHelper.create_wall(ifc, height=10.0)
-        _BlockHelper.create_slab(ifc, z=4.0)
-        bpy.context.scene.cursor.location = (0, 0, 0)
-
-        bpy.ops.bim.generate_space()
-        space = bpy.data.objects["IfcSpace/Space"]
-        assert np.isclose(space.dimensions.z, 4, atol=0.1), f"Expected height ~4, got {space.dimensions.z}"
-
-    def test_forced_space_height(self):
-        bpy.ops.bim.create_project()
-        ifc = tool.Ifc.get()
-        _BlockHelper.create_wall(ifc, height=10.0)
-        bpy.context.scene.cursor.location = (0, 0, 0)
-
-        spatial_props = tool.Spatial.get_spatial_props()
-        spatial_props.force_space_height = True
-        spatial_props.space_height = 5
-        bpy.ops.bim.generate_space()
-        space = bpy.data.objects["IfcSpace/Space"]
-        assert np.isclose(space.dimensions.z, 5, atol=0.1), f"Expected height 5, got {space.dimensions.z}"
-
-    def test_auto_space_height_fallback_no_slab(self):
-        bpy.ops.bim.create_project()
-        ifc = tool.Ifc.get()
-        _BlockHelper.create_wall(ifc, height=10.0)
-        bpy.context.scene.cursor.location = (0, 0, 0)
-
-        spatial_props = tool.Spatial.get_spatial_props()
-        spatial_props.force_space_height = False
-        bpy.ops.bim.generate_space()
-        space = bpy.data.objects["IfcSpace/Space"]
-        assert space.dimensions.z > 0, f"Expected positive height, got {space.dimensions.z}"
-
-    def test_apply_space_height_to_selection(self):
-        bpy.ops.bim.create_project()
-        ifc = tool.Ifc.get()
-        _BlockHelper.create_wall(ifc, height=10.0)
-        bpy.context.scene.cursor.location = (0, 0, 0)
-
-        bpy.ops.bim.generate_space()
-        space = bpy.data.objects["IfcSpace/Space"]
-
-        spatial_props = tool.Spatial.get_spatial_props()
-        spatial_props.space_height = 6
-        bpy.context.view_layer.objects.active = space
-        space.select_set(True)
-
-        bpy.ops.bim.apply_space_height_to_selection()
-        bpy.context.view_layer.update()
-        assert np.isclose(space.dimensions.z, 6, atol=0.1), f"Expected height 6, got {space.dimensions.z}"
-
-    def test_cache_survives_second_generation(self):
-        bpy.ops.bim.create_project()
-        ifc = tool.Ifc.get()
-        _BlockHelper.create_wall(ifc, height=10.0)
-        bpy.context.scene.cursor.location = (0, 0, 0)
-
-        bpy.ops.bim.generate_space()
-        space1 = bpy.data.objects["IfcSpace/Space"]
-        height1 = space1.dimensions.z
-
-        bpy.ops.bim.generate_space()
-        space2 = bpy.data.objects["IfcSpace/Space"]
-        height2 = space2.dimensions.z
-
-        assert np.isclose(height1, height2, atol=0.1), f"Cache changed height: {height1} vs {height2}"
-
-    def test_regenerate_after_wall_height_change(self):
-        bpy.ops.bim.create_project()
-        ifc = tool.Ifc.get()
-        wall, extrusion = _BlockHelper.create_wall(ifc, height=10.0)
-        bpy.context.scene.cursor.location = (0, 0, 0)
-
-        bpy.ops.bim.generate_space()
-        space = bpy.data.objects["IfcSpace/Space"]
-        original_height = space.dimensions.z
-
-        # Modify the IFC representation to change the wall height.
-        extrusion.Depth = 15.0
-        _bump_geom_cache_token()
-
-        bpy.context.view_layer.objects.active = space
-        space.select_set(True)
-
-        bpy.ops.bim.generate_space()
-        new_height = space.dimensions.z
-        assert new_height != original_height or new_height > 0
-
-    def test_regenerate_space_from_centered_cube_representation(self):
-        bpy.ops.bim.create_project()
-        ifc = tool.Ifc.get()
-        _BlockHelper.create_wall(ifc, height=10.0)
-        scene = bpy.context.scene
-        scene.cursor.location = (0, 0, 0)
-
-        # Create a space with a unit cube PolygonalFaceSet centered at local origin.
-        ctx = ifcopenshell.util.representation.get_context(ifc, "Model", "Body", "MODEL_VIEW")
-        points = ifc.createIfcCartesianPointList3D(
-            [
-                (-0.5, -0.5, -0.5),
-                (-0.5, -0.5, 0.5),
-                (-0.5, 0.5, -0.5),
-                (-0.5, 0.5, 0.5),
-                (0.5, -0.5, -0.5),
-                (0.5, -0.5, 0.5),
-                (0.5, 0.5, -0.5),
-                (0.5, 0.5, 0.5),
-            ]
-        )
-        faces = [
-            ifc.createIfcIndexedPolygonalFace([1, 2, 4, 3]),
-            ifc.createIfcIndexedPolygonalFace([3, 4, 8, 7]),
-            ifc.createIfcIndexedPolygonalFace([7, 8, 6, 5]),
-            ifc.createIfcIndexedPolygonalFace([5, 6, 2, 1]),
-            ifc.createIfcIndexedPolygonalFace([3, 7, 5, 1]),
-            ifc.createIfcIndexedPolygonalFace([8, 4, 2, 6]),
-        ]
-        face_set = ifc.createIfcPolygonalFaceSet(points, closed=True, faces=faces)
-        shape_rep = ifc.createIfcShapeRepresentation(ctx, "Body", "Tessellation", [face_set])
-
-        space_element = ifcopenshell.api.root.create_entity(ifc, ifc_class="IfcSpace")
-        space_element.Representation = ifc.createIfcProductDefinitionShape(None, None, [shape_rep])
-
-        bpy.ops.mesh.primitive_cube_add(size=1, location=(0, 0, 5))
-        obj = bpy.data.objects["Cube"]
-        scene.collection.objects.link(obj)
-        tool.Ifc.link(space_element, obj)
-        bpy.context.view_layer.update()
-        obj.name = "MySpace"
-
-        # Check the cube's world bottom Z before regeneration.
-        bottom_z = (obj.matrix_world @ Vector(obj.bound_box[0])).z
-        assert np.isclose(bottom_z, 4.5), f"Expected bottom_z=4.5, got {bottom_z}"
-
-        # Regenerate the space.
-        bpy.context.view_layer.objects.active = obj
-        obj.select_set(True)
-        bpy.ops.bim.generate_space()
-
-        mesh = obj.data
-        assert isinstance(mesh, bpy.types.Mesh)
-        verts = [v.co.z for v in mesh.vertices]
-        min_z = min(verts)
-        max_z = max(verts)
-        assert min_z >= 0, f"Expected extrusion to start at local z>=0, got min_z={min_z}"
-        assert max_z > 0, f"Expected extrusion to have positive height, got max_z={max_z}"
-        assert np.isclose(obj.location.z, 4.5, atol=0.01), f"Expected location.z=4.5, got {obj.location.z}"

src/ifcopenshell-python/ifcopenshell/api/alignment/create.py

@@ -51,10 +51,6 @@ def create(
 
     If geometric representations are created, the alignment stationing referent is also created using the start_station value. IfcReferent.ObjectPlacement
     is required for linear positiion elements and IfcLinearPlacement is defined relative to alignment curve geometry.
-    This referent's Name follows the same "<alignment name> <station>" convention update_key_point_referents() uses
-    for its own key-point referents (e.g. "MyAlignment 49+00.00"), so that every referent nested under an alignment
-    is identifiable by name alone, without needing to inspect its Pset_Stationing or placement to know which
-    alignment it belongs to.
 
     :param file:
     :param name: name assigned to IfcAlignment.Name
@@ -90,7 +86,7 @@ def create(
     if include_geometry:
         _create_geometric_representation(file, alignment)
 
-    referent_name = f"{name} {ifcopenshell.util.alignment.station_as_string(file, start_station)}"
+    referent_name = ifcopenshell.util.alignment.station_as_string(file, start_station)
     referent = ifcopenshell.api.alignment.add_stationing_referent(file, referent_name, alignment, 0.0, start_station)
 
     for layout in alignment_layouts:

src/ifcopenshell-python/ifcopenshell/api/alignment/create_as_polyline.py

@@ -128,11 +128,6 @@ def create_as_polyline(
 
     The IfcAlignment is aggreated to IfcProject
 
-    The stationing referent created from start_station has Name "<alignment name> <station>"
-    (e.g. "MyAlignment 49+00.00"), the same convention update_key_point_referents() and
-    create() use for their own referents, so every referent nested under an alignment is
-    identifiable by name alone.
-
     :param file:
     :param name: name assigned to IfcAlignment.Name
     :param points: sequence of points defining the polyline
@@ -147,8 +142,8 @@ def create_as_polyline(
     _create_polyline_representation(file, alignment, points)
 
     # define stationing
-    referent_name = f"{alignment.Name} {ifcopenshell.util.alignment.station_as_string(file, start_station)}"
-    referent = ifcopenshell.api.alignment.add_stationing_referent(file, referent_name, alignment, 0.0, start_station)
+    name = ifcopenshell.util.alignment.station_as_string(file, start_station)
+    referent = ifcopenshell.api.alignment.add_stationing_referent(file, name, alignment, 0.0, start_station)
 
     # IFC 4.1.4.1.1 Alignment Aggregation To Project
     project = file.by_type("IfcProject")[0]

src/ifcopenshell-python/ifcopenshell/api/alignment/update_key_point_referents.py

@@ -115,19 +115,11 @@ def update_key_point_referents(
     get_stationing_nest) -- key-point referents never belong in either of those.
 
     :param layout: IfcAlignmentHorizontal, IfcAlignmentVertical, or IfcAlignmentCant
-    :param rel_nests: an existing IfcRelNests to (re)populate; its RelatingObject must be an
-        IfcAlignment (TypeError is raised otherwise), but need not be the IfcAlignment that
-        directly nests `layout` -- passing an ancestor's own IfcRelNests is supported
-        specifically so that a vertical/cant layout living under a child IfcAlignment (per CT
-        4.1.4.4.1.2, once a second vertical layout is added) can still have its key-point
-        referents named after and nested to the top-level parent alignment, matching how the
-        alignment's horizontal key points are named, rather than a generic "Child of X" name.
-        When `rel_nests` is given, `rel_nests.RelatingObject` -- not `layout`'s own direct
-        parent -- is used for both the created referents' Name and the returned IfcRelNests. If
-        omitted, a new IfcRelNests is always created and related to `layout`'s own direct
-        parent alignment -- there is no implicit search for or reuse of a previously created
-        nest. Callers who want to regenerate into an existing nest must pass it back in
-        explicitly via `rel_nests`.
+    :param rel_nests: an existing IfcRelNests to (re)populate; its RelatingObject must be the
+        IfcAlignment that nests `layout` (TypeError is raised otherwise). If omitted, a new
+        IfcRelNests is always created and related to that IfcAlignment -- there is no implicit
+        search for or reuse of a previously created nest. Callers who want to regenerate into an
+        existing nest must pass it back in explicitly via `rel_nests`.
     :param clear: if True, deletes all IfcReferent currently in rel_nests.RelatedObjects (and their
         Pset_Stationing) before regenerating. If False (default), new referents are appended to
         whatever already exists -- no deduplication.
@@ -163,25 +155,17 @@ def update_key_point_referents(
             f"Expected entity type to be one of {[_ for _ in expected_types]}, instead received {layout.is_a()}"
         )
 
-    layout_alignment = ifcopenshell.api.alignment.get_alignment(layout)
-    if layout_alignment is None:
+    alignment = ifcopenshell.api.alignment.get_alignment(layout)
+    if alignment is None:
         raise ValueError(f"{layout.is_a()} #{layout.id()} is not nested under an IfcAlignment.")
 
-    # `alignment` is used below for referent naming (and as the fallback-placement basis) --
-    # it defaults to layout's own direct parent, but an explicitly passed rel_nests overrides
-    # it with rel_nests.RelatingObject instead (see the rel_nests docstring above). Station
-    # computation always uses layout_alignment, unaffected by this -- get_alignment_start_station
-    # already walks up to the true top-level alignment's own stationing referent regardless of
-    # which (possibly child) alignment it's given.
     if rel_nests is not None:
         if not rel_nests.RelatingObject.is_a("IfcAlignment"):
             raise TypeError(
                 f"Expected rel_nests.RelatingObject to be IfcAlignment, instead received "
                 f"{rel_nests.RelatingObject.is_a()}"
             )
-        alignment = rel_nests.RelatingObject
     else:
-        alignment = layout_alignment
         rel_nests = file.createIfcRelNests(
             GlobalId=ifcopenshell.guid.new(), RelatingObject=alignment, RelatedObjects=()
         )
@@ -201,7 +185,7 @@ def update_key_point_referents(
         )
         return rel_nests
 
-    start_station = ifcopenshell.api.alignment.get_alignment_start_station(file, layout_alignment)
+    start_station = ifcopenshell.api.alignment.get_alignment_start_station(file, alignment)
     curve = ifcopenshell.api.alignment.get_layout_curve(layout)
     is_horizontal = layout.is_a("IfcAlignmentHorizontal")
 

src/ifcopenshell-python/ifcopenshell/api/sequence/create_baseline.py

@@ -28,7 +28,7 @@ import ifcopenshell.util.sequence
 
 def create_baseline(
     file: ifcopenshell.file, work_schedule: ifcopenshell.entity_instance, name: Optional[str] = None
-) -> ifcopenshell.entity_instance:
+) -> None:
     """Creates a baseline for your Work Schedule
 
     Using a IfcWorkSchdule having PredefinedType=PLANNED,
@@ -42,7 +42,7 @@ def create_baseline(
     * Same Construction Resources
     * Same Resource Relationships
 
-    :param work_schedule: The planned work schedule to baseline
+    :param work_schedule: The planned work_schedule to baseline
     :param name: baseline work schedule name
     :return: The baseline work_schedule
 
@@ -51,7 +51,7 @@ def create_baseline(
     .. code:: python
 
         # We have a Work Schedule
-        planned_work_schedule = ifcopenshell.api.sequence.add_work_schedule(model, name="Planned Construction Schedule")
+        planned_work_schedule = WorkSchedule(name="Design new feature",predefinedType="PLANNED", deadline="2023-03-01")
 
         # And now we have a baseline for our Work Schedule
         baseline_work_schedule = ifcopenshell.api.sequence.create_baseline(file, work_schedule=planned_work_schedule, name="Baseline 1")
@@ -64,23 +64,24 @@ def create_baseline(
 class Usecase:
     file: ifcopenshell.file
 
-    def execute(
-        self, work_schedule: ifcopenshell.entity_instance, name: Union[str, None]
-    ) -> ifcopenshell.entity_instance:
-        if work_schedule.PredefinedType != "PLANNED":
-            raise ValueError("Only a PLANNED work schedule can be baselined.")
+    def execute(self, work_schedule: ifcopenshell.entity_instance, name: Union[str, None]) -> None:
+        # create work schedule
+        if not work_schedule.PredefinedType == "PLANNED":
+            return
         baseline_work_schedule = ifcopenshell.api.sequence.add_work_schedule(
-            self.file, name=name or work_schedule.Name, predefined_type="BASELINE"
+            self.file, name=work_schedule.Name, predefined_type="BASELINE"
         )
+        baseline_work_schedule.Name = name
         self.create_baseline_reference(work_schedule, baseline_work_schedule)
         for summary_task in ifcopenshell.util.sequence.get_root_tasks(work_schedule):
-            current, duplicate = ifcopenshell.api.sequence.duplicate_task(self.file, task=summary_task)
+            res = ifcopenshell.api.sequence.duplicate_task(self.file, task=summary_task)
+            assert isinstance(res, list)
+            current, duplicate = res
             ifcopenshell.api.control.assign_control(
                 self.file, relating_control=baseline_work_schedule, related_objects=[duplicate[0]]
             )
             for i, task in enumerate(current):
                 self.create_baseline_reference(task, duplicate[i])
-        return baseline_work_schedule
 
     def create_baseline_reference(
         self, relating_object: ifcopenshell.entity_instance, related_object: ifcopenshell.entity_instance

src/ifcopenshell-python/ifcopenshell/util/alignment.py

@@ -69,21 +69,21 @@ def station_as_string(file: ifcopenshell.file, sta: float):
     Returns a stringized version of a station. Example 100.0 is 1+00.00 as a stationing string.
     If the project units are SI-based, the string is in the format xxx+yyy.zzz
     If the project units are Emperial-based, the string is in the format xx+yy.zz
-
     :param station: the station to be stringized
     :return: stringized station
     """
 
     unit_type = ifcopenshell.util.unit.get_project_unit(file, "LENGTHUNIT")
-    project_unit_to_metres = ifcopenshell.util.unit.calculate_unit_scale(file)
     if unit_type.is_a("IfcConversionBasedUnit"):
-        # xx+yy.zz display is inherently foot-based, regardless of which foot variant
-        # (international vs. US survey, etc.) the project's own unit actually is.
-        station = sta * project_unit_to_metres / 0.3048
+        station = ifcopenshell.util.unit.convert(
+            sta, from_unit=unit_type.Name, from_prefix=None, to_unit="foot", to_prefix=None
+        )
         plus_seperator = 2
         precision = 2
     else:
-        station = sta * project_unit_to_metres
+        station = ifcopenshell.util.unit.convert(
+            sta, from_unit=unit_type.Name, from_prefix=unit_type.Prefix, to_unit="meter", to_prefix=None
+        )
         plus_seperator = 3
         precision = 3
 

src/ifcopenshell-python/ifcopenshell/util/element.py

@@ -2007,24 +2007,3 @@ def get_material_profiles(element: ifcopenshell.entity_instance) -> list[Priorit
         )
         for material_profile in material.MaterialProfiles
     ]
-
-
-def iter_top_connections(
-    element: ifcopenshell.entity_instance,
-) -> Generator[tuple[ifcopenshell.entity_instance, ifcopenshell.entity_instance], None, None]:
-    """Yield ``(connected_element, rel)`` tuples for every
-    ``IfcRelConnectsElements`` with ``Description == "TOP"`` connecting
-    to this element.
-
-    Walks ``element.ConnectedFrom`` because the connecting element (e.g. a
-    slab) is the relating side of the TOP relationship.
-
-    :param element: The IFC element (typically a wall).
-    :return: Generator of ``(connected_element, rel)`` tuples.
-    """
-    for rel in getattr(element, "ConnectedFrom", []) or ():
-        if not rel.is_a("IfcRelConnectsElements") or rel.Description != "TOP":
-            continue
-        connected = rel.RelatingElement
-        if connected is not None:
-            yield connected, rel

src/ifcopenshell-python/ifcopenshell/util/shape.py

@@ -752,81 +752,3 @@ def get_total_edge_length(geometry: W.triangulation) -> float:
     vertices = get_vertices(geometry)
     vertices = vertices[get_edges(geometry)]
     return np.linalg.norm(vertices[:, 1] - vertices[:, 0], axis=1).sum().item()
-
-
-def _extend_line(start: np.ndarray, end: np.ndarray, distance: float) -> tuple[np.ndarray, np.ndarray]:
-    """Extend a line segment by a fixed distance on both ends.
-
-    :param start: (x, y) or (x, y, z) array.
-    :param end: (x, y) or (x, y, z) array.
-    :param distance: Distance to extend on each end.
-    :return: (new_start, new_end) arrays.
-    """
-    direction = end - start
-    norm = np.linalg.norm(direction)
-    if norm == 0:
-        return start, end
-    offset = distance * (direction / norm)
-    return start - offset, end + offset
-
-
-def bisect_mesh_plane_vf(
-    verts: npt.NDArray[np.float64],
-    faces: npt.NDArray[np.int32],
-    plane_z: float,
-    *,
-    precision: int = 3,
-    extend: float = 0.0,
-) -> list:
-    """Intersect a triangulated mesh with a horizontal Z plane.
-
-    All faces are processed at once via numpy broadcasting for performance.
-
-    :param verts: (n, 3) array of vertices in world coordinates.
-    :param faces: (m, 3) array of triangle vertex indices.
-    :param plane_z: Z elevation of the horizontal cutting plane.
-    :param precision: Decimal places to round intersection point coordinates to.
-    :param extend: Distance to extend each segment on both ends, to ensure
-        overlap with neighbouring segments for polygon closure.
-    :return: List of (start_xy, end_xy) tuples where each coordinate is (x, y).
-    """
-    if len(faces) == 0:
-        return []
-    v0 = verts[faces[:, 0]]
-    v1 = verts[faces[:, 1]]
-    v2 = verts[faces[:, 2]]
-    d0 = v0[:, 2] - plane_z
-    d1 = v1[:, 2] - plane_z
-    d2 = v2[:, 2] - plane_z
-    straddle = ~((np.minimum(np.minimum(d0, d1), d2) > 0) | (np.maximum(np.maximum(d0, d1), d2) < 0))
-    if not np.any(straddle):
-        return []
-    idx = np.where(straddle)[0]
-    d0s, d1s, d2s = d0[idx], d1[idx], d2[idx]
-    v0s, v1s, v2s = v0[idx], v1[idx], v2[idx]
-
-    def _edge_intersections(va, vb, da, db):
-        mask = da * db < 0
-        diff = da - db
-        diff = np.where(diff == 0, 1.0, diff)
-        t = np.where(mask, da / diff, 0.0)
-        pts = va + t[:, np.newaxis] * (vb - va)
-        return pts, mask
-
-    p01, m01 = _edge_intersections(v0s, v1s, d0s, d1s)
-    p12, m12 = _edge_intersections(v1s, v2s, d1s, d2s)
-    p20, m20 = _edge_intersections(v2s, v0s, d2s, d0s)
-
-    segments = []
-    for i in range(len(idx)):
-        pts_xy = []
-        for pt, mask in ((p01[i], m01[i]), (p12[i], m12[i]), (p20[i], m20[i])):
-            if mask:
-                pts_xy.append((round(float(pt[0]), precision), round(float(pt[1]), precision)))
-        if len(pts_xy) == 2 and pts_xy[0] != pts_xy[1]:
-            if extend > 0:
-                s, e = _extend_line(np.array(pts_xy[0]), np.array(pts_xy[1]), extend)
-                segments.append((s.tolist(), e.tolist()))
-            else:
-                segments.append(pts_xy)
-    return segments

src/ifcopenshell-python/ifcopenshell/util/space.py

@@ -1,246 +0,0 @@
-# IfcOpenShell - IFC toolkit and geometry engine
-# Copyright (C) 2026 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/>.
-
-"""Blender-independent utilities for space geometry generation.
-
-These functions operate on IFC geometry data (vertices, faces, element
-relationships) without requiring any Blender objects to be loaded. They are
-used by Bonsai's space generation pipeline but can also be used standalone
-for IFC analysis.
-"""
-
-from __future__ import annotations
-
-from typing import Optional, Union
-
-import ifcopenshell
-import ifcopenshell.util.element
-import ifcopenshell.util.shape
-import shapely
-
-BOUNDING_CLASSES = ("IfcWall", "IfcColumn", "IfcMember", "IfcVirtualElement", "IfcPlate")
-HEIGHT_DETECTION_CLASSES = ("IfcSlab", "IfcRoof")
-
-
-def get_boundary_lines(
-    ifc_file: ifcopenshell.file,
-    shapes: dict,
-    cut_z: float,
-    bounding_classes: tuple = BOUNDING_CLASSES,
-) -> tuple[list[shapely.LineString], list[ifcopenshell.entity_instance]]:
-    """Generate boundary lines by bisecting IFC element geometry with a horizontal plane.
-
-    :param ifc_file: The IFC file.
-    :param shapes: Dict of element shapes keyed by element id, as produced by
-        a geometry cache. Each entry must have ``verts`` (n,3 ndarray),
-        ``faces`` (m,3 ndarray), ``bottom_z`` (float), ``top_z`` (float).
-    :param cut_z: Z elevation of the cutting plane in world coordinates.
-    :param bounding_classes: IFC classes to treat as space-bounding elements.
-    :return: ``(boundary_lines, bounding_elements)`` where boundary_lines is a
-        list of shapely LineString segments and bounding_elements is a list of
-        IFC entity instances that intersect the cutting plane.
-    """
-    boundary_lines: list[shapely.LineString] = []
-    bounding_elements: list[ifcopenshell.entity_instance] = []
-
-    for element_id, shape_data in shapes.items():
-        element = ifc_file.by_id(element_id)
-        if not any(element.is_a(cls) for cls in bounding_classes):
-            continue
-        if cut_z <= shape_data["bottom_z"] or cut_z >= shape_data["top_z"]:
-            continue
-        bounding_elements.append(element)
-        segments = ifcopenshell.util.shape.bisect_mesh_plane_vf(
-            shape_data["verts"], shape_data["faces"], cut_z, precision=3, extend=0.05
-        )
-        for start, end in segments:
-            boundary_lines.append(shapely.LineString([start, end]))
-
-    return boundary_lines, bounding_elements
-
-
-def get_space_polygon(
-    boundary_lines: list[shapely.LineString],
-    x: float,
-    y: float,
-) -> tuple[Union[shapely.Polygon, str], list]:
-    """Assemble boundary lines into closed polygons and find the one containing (x, y).
-
-    :param boundary_lines: List of shapely LineString segments forming a planar graph.
-    :param x: X coordinate of the point to test.
-    :param y: Y coordinate of the point to test.
-    :return: ``(polygon, [])`` on success, or ``("NO POLYGONS FOUND", [])`` /
-        ``("NO POLYGON FOR POINT", [])`` on failure. The second element is
-        reserved for bounding elements (returned by the caller from
-        :func:`get_boundary_lines`).
-    """
-    unioned = shapely.union_all(shapely.GeometryCollection(boundary_lines))
-    closed_polygons = shapely.polygonize(unioned.geoms)
-    if not closed_polygons:
-        return "NO POLYGONS FOUND", []
-    for polygon in closed_polygons.geoms:
-        if shapely.contains_xy(polygon, x, y):
-            return shapely.force_3d(polygon), []
-    return "NO POLYGON FOR POINT", []
-
-
-def get_auto_space_height(
-    ifc_file: ifcopenshell.file,
-    shapes: dict,
-    space_polygon: shapely.Polygon,
-    base_z: float,
-    bounding_walls: list[ifcopenshell.entity_instance],
-) -> Optional[float]:
-    """Auto-detect space height from elements above using IFC geometry.
-
-    Detection priority:
-    1. ``IfcRelConnectsElements`` (TOP) connections on bounding walls
-    2. ``IfcSlab`` / ``IfcRoof`` elements above with XY overlap to the space polygon
-    3. Minimum wall top Z of bounding walls
-
-    :param ifc_file: The IFC file.
-    :param shapes: Dict of element shapes keyed by element id (see :func:`get_boundary_lines`).
-    :param space_polygon: The space footprint polygon in world XY.
-    :param base_z: The space's base Z in world coordinates.
-    :param bounding_walls: List of IFC wall elements bounding the space.
-    :return: Detected height in meters, or ``None`` if nothing found.
-    """
-    height = get_height_from_top_connections(ifc_file, shapes, bounding_walls, base_z, space_polygon)
-    if height is not None and height > 0:
-        return height
-
-    height = get_height_from_elements_above(ifc_file, shapes, space_polygon, base_z)
-    if height is not None and height > 0:
-        return height
-
-    height = get_height_from_wall_tops(shapes, bounding_walls, base_z)
-    if height is not None and height > 0:
-        return height
-
-    return None
-
-
-def get_height_from_top_connections(
-    ifc_file: ifcopenshell.file,
-    shapes: dict,
-    bounding_walls: list[ifcopenshell.entity_instance],
-    base_z: float,
-    space_polygon: shapely.Polygon,
-) -> Optional[float]:
-    """Find the lowest bottom face of elements connected to bounding walls via IfcRelConnectsElements(TOP).
-
-    :param ifc_file: The IFC file.
-    :param shapes: Dict of element shapes keyed by element id.
-    :param bounding_walls: List of IFC wall elements.
-    :param base_z: The space's base Z in world coordinates.
-    :param space_polygon: The space footprint polygon in world XY.
-    :return: Height in meters, or ``None``.
-    """
-    lowest_min_z: Optional[float] = None
-    for wall_element in bounding_walls:
-        for connected_element, _rel in ifcopenshell.util.element.iter_top_connections(wall_element):
-            if not (connected_element.is_a("IfcSlab") or connected_element.is_a("IfcRoof")):
-                continue
-            shape_data = shapes.get(connected_element.id())
-            if not shape_data:
-                continue
-            min_z = shape_data["bottom_z"]
-            if min_z <= base_z:
-                continue
-            verts = shape_data["verts"]
-            element_box = shapely.box(
-                float(verts[:, 0].min()),
-                float(verts[:, 1].min()),
-                float(verts[:, 0].max()),
-                float(verts[:, 1].max()),
-            )
-            if not element_box.intersects(space_polygon):
-                continue
-            if lowest_min_z is None or min_z < lowest_min_z:
-                lowest_min_z = min_z
-    if lowest_min_z is not None:
-        return lowest_min_z - base_z
-    return None
-
-
-def get_height_from_elements_above(
-    ifc_file: ifcopenshell.file,
-    shapes: dict,
-    space_polygon: shapely.Polygon,
-    base_z: float,
-    height_classes: tuple = HEIGHT_DETECTION_CLASSES,
-) -> Optional[float]:
-    """Find the lowest IfcSlab / IfcRoof above whose XY bbox overlaps the space polygon.
-
-    :param ifc_file: The IFC file.
-    :param shapes: Dict of element shapes keyed by element id.
-    :param space_polygon: The space footprint polygon in world XY.
-    :param base_z: The space's base Z in world coordinates.
-    :param height_classes: IFC classes to consider as ceiling elements.
-    :return: Height in meters, or ``None``.
-    """
-    lowest_min_z: Optional[float] = None
-    for ifc_class in height_classes:
-        for element in ifc_file.by_type(ifc_class):
-            shape_data = shapes.get(element.id())
-            if not shape_data:
-                continue
-            min_z = shape_data["bottom_z"]
-            if min_z <= base_z:
-                continue
-            verts = shape_data["verts"]
-            element_box = shapely.box(
-                float(verts[:, 0].min()),
-                float(verts[:, 1].min()),
-                float(verts[:, 0].max()),
-                float(verts[:, 1].max()),
-            )
-            if not element_box.intersects(space_polygon):
-                continue
-            if lowest_min_z is None or min_z < lowest_min_z:
-                lowest_min_z = min_z
-    if lowest_min_z is not None:
-        return lowest_min_z - base_z
-    return None
-
-
-def get_height_from_wall_tops(
-    shapes: dict,
-    bounding_walls: list[ifcopenshell.entity_instance],
-    base_z: float,
-) -> Optional[float]:
-    """Find the minimum wall top Z among bounding walls.
-
-    :param shapes: Dict of element shapes keyed by element id.
-    :param bounding_walls: List of IFC wall elements.
-    :param base_z: The space's base Z in world coordinates.
-    :return: Height in meters, or ``None``.
-    """
-    lowest_top_z: Optional[float] = None
-    for wall_element in bounding_walls:
-        shape_data = shapes.get(wall_element.id())
-        if not shape_data:
-            continue
-        max_z = shape_data["top_z"]
-        if max_z <= base_z:
-            continue
-        if lowest_top_z is None or max_z < lowest_top_z:
-            lowest_top_z = max_z
-    if lowest_top_z is not None:
-        return lowest_top_z - base_z
-    return None

src/ifcopenshell-python/ifcopenshell/util/unit.py

@@ -962,8 +962,7 @@ def convert_file_length_units(ifc_file: ifcopenshell.file, target_units: str = "
         )
 
     unit_assignment = get_unit_assignment(file_patched)
-    # UnitType not available on IfcMonetaryUnit
-    unit_assignment.Units = [new_length, *(u for u in unit_assignment.Units if getattr(u, 'UnitType', None) != new_length.UnitType)]
+    unit_assignment.Units = [new_length, *(u for u in unit_assignment.Units if u.UnitType != new_length.UnitType)]
     if not file_patched.get_total_inverses(old_length):
         ifcopenshell.util.element.remove_deep2(file_patched, old_length)
 

src/ifcopenshell-python/test/api/alignment/test_add_stationing_to_alignment.py

@@ -52,7 +52,7 @@ def test_add_stationing_to_alignment():
     referent = stationing_nest.RelatedObjects[0]
 
     assert referent.PredefinedType == "STATION"
-    assert referent.Name == "TestAlignment 2+000.000"
+    assert referent.Name == "2+000.000"
     assert ifcopenshell.util.element.get_pset(element=referent, name="Pset_Stationing")
     assert ifcopenshell.util.element.get_pset(element=referent, name="Pset_Stationing", prop="Station") == 2000.0
     assert referent.ObjectPlacement != None

src/ifcopenshell-python/test/api/alignment/test_create.py

@@ -22,39 +22,6 @@ import pytest
 import ifcopenshell.api.alignment
 import ifcopenshell.api.context
 import ifcopenshell.api.unit
-import ifcopenshell.util.element
-
-
-def test_create_stationing_referent_name_includes_alignment_name():
-    """create() creates an initial stationing IfcReferent from start_station
-    (see add_stationing_referent()). Its Name must include the alignment's
-    own name, the same "<alignment name> <station>" convention
-    update_key_point_referents() uses for its own referents -- otherwise
-    this referent is indistinguishable by name alone from the same-named
-    referent of any OTHER alignment in the same file, unlike every other
-    referent in the model."""
-    file = ifcopenshell.file(schema="IFC4X3_ADD2")
-    project = file.createIfcProject(GlobalId=ifcopenshell.guid.new(), Name="Test")
-    length = ifcopenshell.api.unit.add_conversion_based_unit(file, name="foot")
-    ifcopenshell.api.unit.assign_unit(file, units=[length])
-    geometric_representation_context = ifcopenshell.api.context.add_context(file, context_type="Model")
-    ifcopenshell.api.context.add_context(
-        file,
-        context_type="Model",
-        context_identifier="Axis",
-        target_view="MODEL_VIEW",
-        parent=geometric_representation_context,
-    )
-
-    alignment = ifcopenshell.api.alignment.create(file, "TestAlignment", start_station=4900.0)
-
-    referents = [
-        r
-        for r in ifcopenshell.util.element.get_components(alignment)
-        if r.is_a("IfcReferent") and ifcopenshell.util.element.get_pset(r, name="Pset_Stationing", prop="Station") == 4900.0
-    ]
-    assert len(referents) == 1
-    assert referents[0].Name == "TestAlignment 49+00.00"
 
 try:
     ifcopenshell.file(schema="IFC4")

src/ifcopenshell-python/test/api/alignment/test_create_as_polyline.py

@@ -21,7 +21,6 @@ import pytest
 
 import ifcopenshell.api.alignment
 import ifcopenshell.api.unit
-import ifcopenshell.util.element
 
 try:
     ifcopenshell.file(schema="IFC4X3")
@@ -50,16 +49,7 @@ def test_create_as_polyline():
         file.createIfcCartesianPoint((-585.0, 3275.2, 56.2)),
     ]
 
-    alignment = ifcopenshell.api.alignment.create_as_polyline(file, "A1", points, start_station=100.0)
+    alignment = ifcopenshell.api.alignment.create_as_polyline(file, "A1", points)
     curve = ifcopenshell.api.alignment.get_curve(alignment)
     assert curve.is_a("IfcPolyline")
     assert len(curve.Points) == 10
-
-    # stationing referent's Name must include the alignment's own name, the
-    # same "<alignment name> <station>" convention create() and
-    # update_key_point_referents() use -- previously this reassigned the
-    # local `name` variable (shadowing the "A1" parameter) to just the bare
-    # station string, losing the alignment name entirely.
-    referents = [r for r in ifcopenshell.util.element.get_components(alignment) if r.is_a("IfcReferent")]
-    assert len(referents) == 1
-    assert referents[0].Name == "A1 0+100.000"

src/ifcopenshell-python/test/api/alignment/test_update_key_point_referents.py

@@ -373,41 +373,6 @@ def test_start_station_composes_for_child_alignment():
     assert stations == pytest.approx([100.0, 600.0, 900.0])
 
 
-def test_rel_nests_from_ancestor_used_for_naming_and_nesting():
-    """A vertical layout living under a child alignment (once a second vertical layout is
-    added, per CT 4.1.4.4.1.2) can still have its key-point referents named after and nested
-    to an ancestor alignment's own rel_nests -- e.g. the same one already holding that
-    ancestor's horizontal key points -- rather than the child's generic "Child of X" name."""
-    file = _new_file()
-    alignment = ifcopenshell.api.alignment.create(file, "A1", include_vertical=False, start_station=100.0)
-    horizontal = ifcopenshell.api.alignment.get_horizontal_layout(alignment)
-    horizontal_nest = ifcopenshell.api.alignment.update_key_point_referents(file, horizontal)
-    horizontal_count = len(horizontal_nest.RelatedObjects)
-
-    ifcopenshell.api.alignment.add_vertical_layout(file, alignment)
-    ifcopenshell.api.alignment.add_vertical_layout(file, alignment)  # forces the child-alignment split
-    child_alignment = alignment.IsDecomposedBy[0].RelatedObjects[-1]
-    child_vertical = ifcopenshell.api.alignment.get_vertical_layout(child_alignment)
-
-    dp = file.createIfcAlignmentVerticalSegment(
-        StartDistAlong=0.0,
-        HorizontalLength=500.0,
-        StartHeight=10.0,
-        StartGradient=0.01,
-        EndGradient=0.01,
-        PredefinedType="CONSTANTGRADIENT",
-    )
-    ifcopenshell.api.alignment.create_layout_segment(file, child_vertical, dp)
-
-    result = ifcopenshell.api.alignment.update_key_point_referents(file, child_vertical, rel_nests=horizontal_nest)
-
-    assert result == horizontal_nest
-    assert result.RelatingObject == alignment
-    assert len(result.RelatedObjects) == horizontal_count + 2
-    assert all(r.Name.startswith("A1 ") for r in result.RelatedObjects)
-    assert not any("Child of" in r.Name for r in result.RelatedObjects)
-
-
 def test_returns_ifc_rel_nests():
     file = _new_file()
     alignment = _build_alignment(file)
@@ -434,5 +399,4 @@ test_cant_layout_boundary_labels()
 test_no_real_segments_produces_no_referents()
 test_single_real_segment_produces_only_boundary_labels()
 test_start_station_composes_for_child_alignment()
-test_rel_nests_from_ancestor_used_for_naming_and_nesting()
 test_returns_ifc_rel_nests()

src/ifcopenshell-python/test/api/sequence/test_create_baseline.py

@@ -1,146 +0,0 @@
-# IfcOpenShell - IFC toolkit and geometry engine
-# Copyright (C) 2026 IfcOpenShell contributors
-#
-# 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.
-
-
-import pytest
-
-import ifcopenshell.api.root
-import ifcopenshell.api.sequence
-import ifcopenshell.util.sequence
-import test.bootstrap
-
-
-class TestCreateBaseline(test.bootstrap.IFC4):
-    def create_planned_schedule(self, name="Design & Build"):
-        ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcProject")
-        return ifcopenshell.api.sequence.add_work_schedule(self.file, name=name, predefined_type="PLANNED")
-
-    def test_returns_the_created_baseline_schedule(self):
-        planned = self.create_planned_schedule()
-        root_task = ifcopenshell.api.sequence.add_task(self.file, work_schedule=planned, name="Design")
-
-        baseline = ifcopenshell.api.sequence.create_baseline(self.file, work_schedule=planned, name="Baseline 1")
-
-        assert baseline.is_a("IfcWorkSchedule")
-        assert baseline.Name == "Baseline 1"
-        assert baseline.PredefinedType == "BASELINE"
-        baseline_roots = ifcopenshell.util.sequence.get_root_tasks(baseline)
-        assert [task.Name for task in baseline_roots] == [root_task.Name]
-        assert baseline_roots != [root_task]
-
-    def test_falls_back_to_the_planned_schedule_name(self):
-        planned = self.create_planned_schedule()
-
-        baseline = ifcopenshell.api.sequence.create_baseline(self.file, work_schedule=planned)
-
-        assert baseline.Name == "Design & Build"
-
-    def test_leaves_the_name_null_when_both_names_are_omitted(self):
-        planned = self.create_planned_schedule()
-        planned.Name = None
-
-        baseline = ifcopenshell.api.sequence.create_baseline(self.file, work_schedule=planned)
-
-        assert baseline.Name is None
-
-    def test_rejects_a_non_planned_schedule(self):
-        ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcProject")
-        actual = ifcopenshell.api.sequence.add_work_schedule(self.file, predefined_type="ACTUAL")
-
-        with pytest.raises(ValueError):
-            ifcopenshell.api.sequence.create_baseline(self.file, work_schedule=actual)
-
-    def test_baselines_a_schedule_without_tasks(self):
-        planned = self.create_planned_schedule()
-
-        baseline = ifcopenshell.api.sequence.create_baseline(self.file, work_schedule=planned, name="Baseline 1")
-
-        assert ifcopenshell.util.sequence.get_root_tasks(baseline) == []
-
-    def test_baselines_every_root_task(self):
-        planned = self.create_planned_schedule()
-        ifcopenshell.api.sequence.add_task(self.file, work_schedule=planned, name="Design")
-        ifcopenshell.api.sequence.add_task(self.file, work_schedule=planned, name="Construction")
-
-        baseline = ifcopenshell.api.sequence.create_baseline(self.file, work_schedule=planned, name="Baseline 1")
-
-        baseline_roots = ifcopenshell.util.sequence.get_root_tasks(baseline)
-        assert sorted(task.Name for task in baseline_roots) == ["Construction", "Design"]
-
-    def test_baselines_nested_tasks(self):
-        planned = self.create_planned_schedule()
-        root_task = ifcopenshell.api.sequence.add_task(self.file, work_schedule=planned, name="Construction")
-        ifcopenshell.api.sequence.add_task(self.file, parent_task=root_task, name="Foundations")
-        ifcopenshell.api.sequence.add_task(self.file, parent_task=root_task, name="Superstructure")
-
-        baseline = ifcopenshell.api.sequence.create_baseline(self.file, work_schedule=planned, name="Baseline 1")
-
-        baseline_root = ifcopenshell.util.sequence.get_root_tasks(baseline)[0]
-        nested = ifcopenshell.util.sequence.get_nested_tasks(baseline_root)
-        assert sorted(task.Name for task in nested) == ["Foundations", "Superstructure"]
-        assert len(self.file.by_type("IfcTask")) == 6
-
-    def test_baselines_task_attributes_and_times(self):
-        planned = self.create_planned_schedule()
-        task = ifcopenshell.api.sequence.add_task(
-            self.file, work_schedule=planned, name="Foundations", identification="A1", description="Pour concrete"
-        )
-        ifcopenshell.api.sequence.add_task_time(self.file, task=task)
-        ifcopenshell.api.sequence.edit_task_time(
-            self.file, task_time=task.TaskTime, attributes={"ScheduleDuration": "P5D"}
-        )
-
-        baseline = ifcopenshell.api.sequence.create_baseline(self.file, work_schedule=planned, name="Baseline 1")
-
-        baseline_task = ifcopenshell.util.sequence.get_root_tasks(baseline)[0]
-        assert baseline_task.Identification == "A1"
-        assert baseline_task.Description == "Pour concrete"
-        assert baseline_task.TaskTime != task.TaskTime
-        assert baseline_task.TaskTime.ScheduleDuration == "P5D"
-
-    def test_baselines_sequence_relationships_between_tasks(self):
-        planned = self.create_planned_schedule()
-        root_task = ifcopenshell.api.sequence.add_task(self.file, work_schedule=planned, name="Construction")
-        predecessor = ifcopenshell.api.sequence.add_task(self.file, parent_task=root_task, name="Foundations")
-        successor = ifcopenshell.api.sequence.add_task(self.file, parent_task=root_task, name="Superstructure")
-        ifcopenshell.api.sequence.assign_sequence(self.file, relating_process=predecessor, related_process=successor)
-
-        baseline = ifcopenshell.api.sequence.create_baseline(self.file, work_schedule=planned, name="Baseline 1")
-
-        baseline_root = ifcopenshell.util.sequence.get_root_tasks(baseline)[0]
-        nested = {task.Name: task for task in ifcopenshell.util.sequence.get_nested_tasks(baseline_root)}
-        rels = nested["Foundations"].IsPredecessorTo
-        assert len(rels) == 1
-        assert rels[0].RelatedProcess == nested["Superstructure"]
-
-    def test_references_the_planned_schedule_and_tasks(self):
-        planned = self.create_planned_schedule()
-        root_task = ifcopenshell.api.sequence.add_task(self.file, work_schedule=planned, name="Construction")
-        subtask = ifcopenshell.api.sequence.add_task(self.file, parent_task=root_task, name="Foundations")
-
-        baseline = ifcopenshell.api.sequence.create_baseline(self.file, work_schedule=planned, name="Baseline 1")
-
-        baseline_root = ifcopenshell.util.sequence.get_root_tasks(baseline)[0]
-        baseline_subtask = ifcopenshell.util.sequence.get_nested_tasks(baseline_root)[0]
-        references = {
-            rel.RelatingObject: list(rel.RelatedObjects) for rel in self.file.by_type("IfcRelDefinesByObject")
-        }
-        assert references[planned] == [baseline]
-        assert references[root_task] == [baseline_root]
-        assert references[subtask] == [baseline_subtask]
-
-    def test_reuses_the_existing_reference_for_further_baselines(self):
-        planned = self.create_planned_schedule()
-
-        first = ifcopenshell.api.sequence.create_baseline(self.file, work_schedule=planned, name="Baseline 1")
-        second = ifcopenshell.api.sequence.create_baseline(self.file, work_schedule=planned, name="Baseline 2")
-
-        assert len(planned.Declares) == 1
-        assert list(planned.Declares[0].RelatedObjects) == [first, second]

src/ifcopenshell-python/test/util/test_alignment.py

@@ -86,69 +86,7 @@ def _test_us_stations():
 
 
 @pytest.mark.skipif(not IFC4X3_AVAILABLE, reason="IFC4X3 not available")
-def _test_custom_named_conversion_based_unit_stations():
-    """Regression test: station_as_string() must work for an
-    IfcConversionBasedUnit whose Name isn't one of the fixed set
-    ifcopenshell.util.unit.si_conversions recognises (e.g. a project that,
-    reasonably, names its foot-based unit something other than the bare
-    "foot" IfcOpenShell's own add_conversion_based_unit() produces -- for
-    instance to distinguish the US survey foot, 1200/3937 m exactly, from
-    the international foot, 0.3048 m exactly, which differ by ~2 ppm and
-    are NOT interchangeable once a project is tied to a US state plane CRS,
-    virtually all of which are defined in US survey feet).
-
-    Previously, station_as_string() converted via
-    ifcopenshell.util.unit.convert(), which looks up the conversion factor
-    BY NAME in si_conversions -- silently substituting a factor of 1.0
-    (i.e. treating the value as if it were already in the display unit) for
-    any unrecognised name, rather than raising an error. For a project unit
-    like "US survey foot" this inflated every station string by the
-    project-unit<->metre ratio (~3.28x), even though the underlying
-    Pset_Stationing.Station numeric value written by
-    ifcopenshell.api.alignment.create()/update_key_point_referents was
-    correct throughout -- only the display text was wrong.
-    """
-    file = ifcopenshell.file(schema="IFC4X3_ADD2")
-    project = file.createIfcProject(GlobalId=ifcopenshell.guid.new(), Name="Test")
-
-    # Hand-built rather than via add_conversion_based_unit(), since that
-    # API also resolves its conversion factor by name (si_conversions) and
-    # can't produce a custom name paired with a specific factor.
-    si_unit = file.createIfcSIUnit(UnitType="LENGTHUNIT", Name="METRE")
-    value_component = file.create_entity("IfcReal", wrappedValue=1200.0 / 3937.0)  # US survey foot, exact
-    conversion_factor = file.createIfcMeasureWithUnit(value_component, si_unit)
-    exponents = file.createIfcDimensionalExponents(1, 0, 0, 0, 0, 0, 0)
-    length = file.createIfcConversionBasedUnit(exponents, "LENGTHUNIT", "US survey foot", conversion_factor)
-    ifcopenshell.api.unit.assign_unit(file, units=[length])
-
-    # US survey foot and international foot differ by ~2 ppm. At small
-    # station values that's invisible at 2-decimal-place precision, so
-    # these match _test_us_stations()'s "foot" case exactly.
-    s = sta.station_as_string(file, 0.0)
-    assert s == "0+00.00"
-
-    s = sta.station_as_string(file, 100.00)
-    assert s == "1+00.00"
-
-    s = sta.station_as_string(file, -100.00)
-    assert s == "-1+00.00"
-
-    # At a large enough station, ~2 ppm DOES become visible at 2 decimal
-    # places (123456.789 * 2e-6 =~ 0.25) -- this is the real, correct US
-    # survey foot vs. international foot difference, not a bug. Before the
-    # fix, the name-based lookup's silent 1.0 fallback inflated this same
-    # input by ~3.28x to "1234+57.036" -> "4050+82.90"-ish territory, wildly
-    # different from either correct answer -- so this still exercises the
-    # regression, it's just not identical to the "foot" case's value.
-    s = sta.station_as_string(file, 123456.789)
-    assert s == "1234+57.04"
-
-    s = sta.station_as_string(file, -123456.789)
-    assert s == "-1234+57.04"
-
-
 def test_station_as_string():
     _test_si_stations()
     _test_si_stations_millimeter()
     _test_us_stations()
-    _test_custom_named_conversion_based_unit_stations()

src/ifcopenshell-python/test/util/test_element.py

@@ -1392,47 +1392,3 @@ class TestCopyDeepIFC4(test.bootstrap.IFC4):
         element2 = subject.copy_deep(self.file, element)
         assert element2.Segments[0][0] == (1, 2)
         assert element2.Segments[1][0] == (3, 4)
-
-
-class TestIterTopConnections(test.bootstrap.IFC4):
-    def test_yields_top_connected_element(self):
-        wall = ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcWall")
-        slab = ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcSlab")
-        rel = self.file.createIfcRelConnectsElements(
-            GlobalId=ifcopenshell.guid.new(),
-            RelatingElement=slab,
-            RelatedElement=wall,
-            Description="TOP",
-        )
-        results = list(subject.iter_top_connections(wall))
-        assert len(results) == 1
-        assert results[0][0] == slab
-        assert results[0][1] == rel
-
-    def test_returns_empty_when_no_connections(self):
-        wall = ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcWall")
-        assert list(subject.iter_top_connections(wall)) == []
-
-    def test_filters_non_top_description(self):
-        wall = ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcWall")
-        slab = ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcSlab")
-        self.file.createIfcRelConnectsElements(
-            GlobalId=ifcopenshell.guid.new(),
-            RelatingElement=slab,
-            RelatedElement=wall,
-            Description="BOTTOM",
-        )
-        assert list(subject.iter_top_connections(wall)) == []
-
-    def test_filters_non_rel_connects_elements(self):
-        wall = ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcWall")
-        slab = ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcSlab")
-        self.file.createIfcRelConnectsPathElements(
-            GlobalId=ifcopenshell.guid.new(),
-            RelatingElement=slab,
-            RelatedElement=wall,
-            Description="ATPATH",
-            RelatingConnectionType="ATPATH",
-            RelatedConnectionType="ATPATH",
-        )
-        assert list(subject.iter_top_connections(wall)) == []

src/ifcopenshell-python/test/util/test_shape.py

@@ -1,97 +0,0 @@
-# IfcOpenShell - IFC toolkit and geometry engine
-# Copyright (C) 2026 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 numpy as np
-
-import ifcopenshell.util.shape as subject
-
-
-def _cube_verts_faces(size=2.0, z_offset=0.0):
-    """Build a triangulated cube as (verts, faces) numpy arrays."""
-    s = size / 2
-    verts = np.array(
-        [
-            [-s, -s, -s + z_offset],
-            [s, -s, -s + z_offset],
-            [s, s, -s + z_offset],
-            [-s, s, -s + z_offset],
-            [-s, -s, s + z_offset],
-            [s, -s, s + z_offset],
-            [s, s, s + z_offset],
-            [-s, s, s + z_offset],
-        ],
-        dtype=np.float64,
-    )
-    faces = np.array(
-        [
-            [0, 1, 2],
-            [0, 2, 3],
-            [4, 6, 5],
-            [4, 7, 6],
-            [0, 4, 5],
-            [0, 5, 1],
-            [1, 5, 6],
-            [1, 6, 2],
-            [2, 6, 7],
-            [2, 7, 3],
-            [3, 7, 4],
-            [3, 4, 0],
-        ],
-        dtype=np.int32,
-    )
-    return verts, faces
-
-
-class TestBisectMeshPlaneVf:
-    def test_bisect_at_mid_height(self):
-        verts, faces = _cube_verts_faces(size=2.0)
-        segments = subject.bisect_mesh_plane_vf(verts, faces, plane_z=0.0)
-        assert len(segments) >= 4
-        for start, end in segments:
-            assert len(start) == 2
-            assert len(end) == 2
-
-    def test_bisect_above_mesh_returns_empty(self):
-        verts, faces = _cube_verts_faces(size=2.0)
-        segments = subject.bisect_mesh_plane_vf(verts, faces, plane_z=10.0)
-        assert segments == []
-
-    def test_bisect_below_mesh_returns_empty(self):
-        verts, faces = _cube_verts_faces(size=2.0)
-        segments = subject.bisect_mesh_plane_vf(verts, faces, plane_z=-10.0)
-        assert segments == []
-
-    def test_bisect_with_extend(self):
-        verts, faces = _cube_verts_faces(size=2.0)
-        segments_no_extend = subject.bisect_mesh_plane_vf(verts, faces, plane_z=0.0, extend=0.0)
-        segments_extend = subject.bisect_mesh_plane_vf(verts, faces, plane_z=0.0, extend=0.05)
-        assert len(segments_extend) == len(segments_no_extend)
-        for (s_ext, e_ext), (s_no, e_no) in zip(segments_extend, segments_no_extend):
-            assert abs(s_ext[0] - s_no[0]) >= 0.04 or abs(s_ext[1] - s_no[1]) >= 0.04
-
-    def test_bisect_empty_faces(self):
-        verts = np.array([[0, 0, 0], [1, 0, 0], [0, 1, 0]], dtype=np.float64)
-        faces = np.array([], dtype=np.int32).reshape(0, 3)
-        assert subject.bisect_mesh_plane_vf(verts, faces, plane_z=0.0) == []
-
-    def test_bisect_precision(self):
-        verts, faces = _cube_verts_faces(size=2.0)
-        segments = subject.bisect_mesh_plane_vf(verts, faces, plane_z=0.0, precision=6)
-        for start, end in segments:
-            for coord in start + end:
-                assert round(coord, 6) == coord

src/ifcopenshell-python/test/util/test_space.py

@@ -1,186 +0,0 @@
-# IfcOpenShell - IFC toolkit and geometry engine
-# Copyright (C) 2026 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.api.geometry
-import ifcopenshell.api.root
-import ifcopenshell.geom
-import ifcopenshell.guid
-import ifcopenshell.util.shape
-import ifcopenshell.util.space as subject
-import pytest
-import shapely
-import test.bootstrap
-
-
-def _build_shapes_dict(ifc_file, elements):
-    """Build a shapes dict as expected by ifcopenshell.util.space functions."""
-    settings = ifcopenshell.geom.settings()
-    settings.set("disable-opening-subtractions", True)
-    settings.set("use-world-coords", True)
-    shapes = {}
-    for element in elements:
-        shape = ifcopenshell.geom.create_shape(settings, element)
-        verts = ifcopenshell.util.shape.get_shape_vertices(shape, shape.geometry)
-        faces = ifcopenshell.util.shape.get_faces(shape.geometry)
-        zs = verts[:, 2]
-        shapes[element.id()] = {
-            "verts": verts,
-            "faces": faces,
-            "bottom_z": float(zs.min()),
-            "top_z": float(zs.max()),
-        }
-    return shapes
-
-
-def _add_extruded_body(ifc_file, element, coords_2d, depth, z_offset=0.0):
-    """Add a body representation (extruded polyline) to an element."""
-    if not ifc_file.by_type("IfcProject"):
-        ifcopenshell.api.root.create_entity(ifc_file, ifc_class="IfcProject")
-    ctx = ifc_file.createIfcGeometricRepresentationContext(
-        ContextType="Model",
-        CoordinateSpaceDimension=3,
-        Precision=1e-5,
-        WorldCoordinateSystem=ifc_file.createIfcAxis2Placement3D(
-            ifc_file.createIfcCartesianPoint((0.0, 0.0, 0.0)),
-            ifc_file.createIfcDirection((0.0, 0.0, 1.0)),
-            ifc_file.createIfcDirection((1.0, 0.0, 0.0)),
-        ),
-    )
-    sub_ctx = ifc_file.createIfcGeometricRepresentationSubContext(
-        ContextIdentifier="Body",
-        ContextType="Model",
-        ParentContext=ctx,
-        TargetView="MODEL_VIEW",
-    )
-    pts = [ifc_file.createIfcCartesianPoint((float(x), float(y))) for x, y in coords_2d]
-    polyline = ifc_file.createIfcPolyline(pts)
-    profile = ifc_file.create_entity("IfcArbitraryClosedProfileDef", ProfileType="CURVE", OuterCurve=polyline)
-    placement = ifc_file.createIfcAxis2Placement3D(
-        ifc_file.createIfcCartesianPoint((0.0, 0.0, z_offset)),
-        ifc_file.createIfcDirection((0.0, 0.0, 1.0)),
-        ifc_file.createIfcDirection((1.0, 0.0, 0.0)),
-    )
-    direction = ifc_file.createIfcDirection((0.0, 0.0, 1.0))
-    solid = ifc_file.createIfcExtrudedAreaSolid(profile, placement, direction, depth)
-    rep = ifc_file.create_entity(
-        "IfcShapeRepresentation",
-        ContextOfItems=sub_ctx,
-        RepresentationIdentifier="Body",
-        RepresentationType="SweptSolid",
-        Items=[solid],
-    )
-    ifcopenshell.api.geometry.assign_representation(ifc_file, product=element, representation=rep)
-
-
-class TestGetBoundaryLines(test.bootstrap.IFC4):
-    def test_returns_segments_for_intersecting_walls(self):
-        wall = ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcWall")
-        _add_extruded_body(self.file, wall, [[-5, -5], [5, -5], [5, 5], [-5, 5]], 3.0)
-        shapes = _build_shapes_dict(self.file, [wall])
-        lines, bounding = subject.get_boundary_lines(self.file, shapes, cut_z=1.0)
-        assert len(lines) > 0
-        assert wall in bounding
-
-    def test_skips_elements_not_intersecting_plane(self):
-        wall = ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcWall")
-        _add_extruded_body(self.file, wall, [[-1, -1], [1, -1], [1, 1], [-1, 1]], 1.0)
-        shapes = _build_shapes_dict(self.file, [wall])
-        lines, bounding = subject.get_boundary_lines(self.file, shapes, cut_z=10.0)
-        assert lines == []
-        assert bounding == []
-
-    def test_skips_non_bounding_classes(self):
-        slab = ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcSlab")
-        _add_extruded_body(self.file, slab, [[-1, -1], [1, -1], [1, 1], [-1, 1]], 1.0)
-        shapes = _build_shapes_dict(self.file, [slab])
-        lines, bounding = subject.get_boundary_lines(self.file, shapes, cut_z=0.5)
-        assert slab not in bounding
-
-
-class TestGetSpacePolygon(test.bootstrap.IFC4):
-    def test_finds_containing_polygon(self):
-        lines = [
-            shapely.LineString([(0, 0), (10, 0)]),
-            shapely.LineString([(10, 0), (10, 10)]),
-            shapely.LineString([(10, 10), (0, 10)]),
-            shapely.LineString([(0, 10), (0, 0)]),
-        ]
-        polygon, _ = subject.get_space_polygon(lines, 5, 5)
-        assert not isinstance(polygon, str)
-        assert polygon.area == pytest.approx(100)
-
-    def test_no_polygons_found(self):
-        polygon, _ = subject.get_space_polygon([], 0, 0)
-        assert polygon == "NO POLYGONS FOUND"
-
-    def test_no_polygon_for_point(self):
-        lines = [
-            shapely.LineString([(0, 0), (10, 0)]),
-            shapely.LineString([(10, 0), (10, 10)]),
-            shapely.LineString([(10, 10), (0, 10)]),
-            shapely.LineString([(0, 10), (0, 0)]),
-        ]
-        polygon, _ = subject.get_space_polygon(lines, 50, 50)
-        assert polygon == "NO POLYGON FOR POINT"
-
-
-class TestGetAutoSpaceHeight(test.bootstrap.IFC4):
-    def test_height_from_top_connection(self):
-        wall = ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcWall")
-        slab = ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcSlab")
-        _add_extruded_body(self.file, wall, [[-5, -5], [5, -5], [5, 5], [-5, 5]], 3.0)
-        _add_extruded_body(self.file, slab, [[-5, -5], [5, -5], [5, 5], [-5, 5]], 0.3, z_offset=3.0)
-        self.file.createIfcRelConnectsElements(
-            GlobalId=ifcopenshell.guid.new(),
-            RelatingElement=slab,
-            RelatedElement=wall,
-            Description="TOP",
-        )
-        shapes = _build_shapes_dict(self.file, [wall, slab])
-        space_polygon = shapely.box(-5, -5, 5, 5)
-        height = subject.get_auto_space_height(self.file, shapes, space_polygon, 0.0, [wall])
-        assert height is not None
-        assert height == pytest.approx(3.0, abs=0.1)
-
-    def test_height_from_elements_above_without_top_connection(self):
-        wall = ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcWall")
-        slab = ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcSlab")
-        _add_extruded_body(self.file, wall, [[-5, -5], [5, -5], [5, 5], [-5, 5]], 3.0)
-        _add_extruded_body(self.file, slab, [[-5, -5], [5, -5], [5, 5], [-5, 5]], 0.3, z_offset=3.0)
-        shapes = _build_shapes_dict(self.file, [wall, slab])
-        space_polygon = shapely.box(-5, -5, 5, 5)
-        height = subject.get_auto_space_height(self.file, shapes, space_polygon, 0.0, [wall])
-        assert height is not None
-        assert height == pytest.approx(3.0, abs=0.1)
-
-    def test_height_from_wall_tops_when_no_slab(self):
-        wall = ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcWall")
-        _add_extruded_body(self.file, wall, [[-5, -5], [5, -5], [5, 5], [-5, 5]], 3.0)
-        shapes = _build_shapes_dict(self.file, [wall])
-        space_polygon = shapely.box(-5, -5, 5, 5)
-        height = subject.get_auto_space_height(self.file, shapes, space_polygon, 0.0, [wall])
-        assert height is not None
-        assert height == pytest.approx(3.0, abs=0.1)
-
-    def test_returns_none_when_no_elements_above(self):
-        wall = ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcWall")
-        _add_extruded_body(self.file, wall, [[-5, -5], [5, -5], [5, 5], [-5, 5]], 3.0)
-        shapes = _build_shapes_dict(self.file, [wall])
-        space_polygon = shapely.box(-100, -100, -90, -90)
-        height = subject.get_auto_space_height(self.file, shapes, space_polygon, 0.0, [])
-        assert height is None

win/build-all-win.py

@@ -53,6 +53,16 @@ QT_DEPLOYMENT_DLLS = {
     "vulkan-1.dll",
 }
 QT_CONF = "[Paths]\nPrefix = .\n"
+# Runtime plugins are canonically prefixed with 'ifcopenshell_' (see
+# decorated_basename() in src/plugin/plugin.cpp and the OUTPUT_NAME properties of
+# the plugin targets, e.g. 'ifcopenshell_parse_schema_ifc${schema}'), while the
+# core shared libraries keep the dotted 'ifcopenshell.' names. Match both so the
+# load-by-name plugins are not silently dropped from the archives.
+IFC_RUNTIME_PLUGIN_PREFIXES = ("ifcopenshell.", "ifcopenshell_")
+# Per-schema geometry writers ship with the Python package only, not next to the
+# executables. 'ifcopenshell.geometry.writer.' covers the core library, the
+# underscore form covers the per-schema plugins.
+IFC_GEOMETRY_WRITER_PREFIXES = ("ifcopenshell.geometry.writer.", "ifcopenshell_geometry_writer_")
 
 
 def run(command: list[str]) -> None:
@@ -153,6 +163,19 @@ def trace_runtime_dependencies(roots: set[Path], candidates: set[Path]) -> set[P
     return resolved
 
 
+def is_geometry_writer(file: Path) -> bool:
+    return file.name.startswith(IFC_GEOMETRY_WRITER_PREFIXES)
+
+
+def collect_ifc_runtime_plugins(dlls: set[Path], dependencies: set[Path]) -> set[Path]:
+    """IfcOpenShell plugins are loaded by name at runtime, so dumpbin cannot discover them."""
+    return {
+        d
+        for d in (dlls - dependencies)
+        if d.name.startswith(IFC_RUNTIME_PLUGIN_PREFIXES) and not is_geometry_writer(d)
+    }
+
+
 def is_qt_deployment_dll(file: Path) -> bool:
     name = file.name.lower()
     return name.startswith("qt") or name.startswith("d3dcompiler_") or name in QT_DEPLOYMENT_DLLS
@@ -223,11 +246,7 @@ def archive_executables() -> None:
     exes = {file for file in bin_files if file.suffix.lower() == ".exe"}
     dlls = {file for file in bin_files if file.suffix.lower() == ".dll"}
     dependencies = trace_runtime_dependencies(exes, dlls)
-    ifc_runtime_plugins = {
-        d
-        for d in (set(dlls) - dependencies)
-        if d.name.startswith("ifcopenshell.") and not d.name.startswith("ifcopenshell.geometry.writer.")
-    }
+    ifc_runtime_plugins = collect_ifc_runtime_plugins(dlls, dependencies)
     qt_deployment_files = collect_qt_deployment_files(install_dir)
 
     for file in sorted(exes):
@@ -267,12 +286,8 @@ def archive_python_package(python_version: str, python_path: Path) -> None:
     exes = {file for file in bin_files if file.suffix.lower() == ".exe"}
     dlls = {file for file in bin_files if file.suffix.lower() == ".dll"}
     dependencies = trace_runtime_dependencies(exes, dlls)
-    ifc_runtime_plugins = {
-        d
-        for d in (set(dlls) - dependencies)
-        if d.name.startswith("ifcopenshell.") and not d.name.startswith("ifcopenshell.geometry.writer.")
-    }
-    geometry_writing = {f for f in bin_files if f.name.startswith("ifcopenshell.geometry.writer.")}
+    ifc_runtime_plugins = collect_ifc_runtime_plugins(dlls, dependencies)
+    geometry_writing = {f for f in bin_files if is_geometry_writer(f)}
 
     python_version_major_minor = "".join(python_version.split(".")[:2])
     site_packages = python_path / "Lib" / "site-packages"