Merge branch 'v0.8.0' into ifcmax/initial-refresh

.github/workflows/build_win.yml

@@ -36,7 +36,7 @@ jobs:
         with:
           repository: IfcOpenShell/build-outputs
           path: ${{ matrix.deps_dir }}
-          ref: windows-${{ matrix.arch }}
+          ref: ${{ matrix.build_branch }}
           lfs: true
           token: ${{ secrets.BUILD_REPO_TOKEN }}
 

.github/workflows/ci-ifcopenshell-docker.yml

@@ -91,7 +91,7 @@ jobs:
         lfs: true
     
     - name: Download 
-      uses: actions/download-artifact@v8.0.0
+      uses: actions/download-artifact@v8.0.1
       with:
         # Artifact name
         name: ifcos-artifacts

.gitignore

@@ -115,3 +115,9 @@ dev_environment.bat
 
 src/ifcopenshell-python/ifcopenshell/express/*.exp
 src/ifcopenshell-python/ifcopenshell/express/*.exp.cache.dat
+
+
+# temp files from AI coding tools
+*.claude
+*.py.tmp*
+*.json.tmp*

pyproject.toml

@@ -3,9 +3,9 @@ name = "IfcOpenShell"
 version = "0.0.0"
 dependencies = [
     "black==26.3.1",
-    "ruff==0.15.5",
+    "ruff==0.15.6",
     "poethepoet",
-    "gersemi==0.26.0",
+    "gersemi==0.26.1",
 ]
 
 [tool.black]

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

@@ -83,7 +83,6 @@ class BIM_PT_bsdd(Panel):
             row = self.layout.row()
             row.operator("bim.load_bsdd_dictionaries")
 
-
 class BIM_UL_bsdd_dictionaries(UIList):
     def draw_item(
         self,

src/bonsai/bonsai/bim/module/drawing/decoration.py

@@ -1787,7 +1787,7 @@ class CutDecorator:
 
         # Handle both old float64 and new float32 checksums for version compatibility
         rot_checksum_bytes: bytes = eval(DecoratorData.camera_rotation_checksum)
-        rot_check = tool.Blender.np_frombuffer_legacy(rot_checksum_bytes, 9)
+        rot_check = tool.Blender.np_frombuffer_legacy(rot_checksum_bytes, 9).reshape(3, 3)
         rot_real = tool.Blender.np_array_legacy(obj.matrix_world.to_3x3())
         rot_dot = np.dot(rot_check, rot_real.T)
         angle_rad = np.arccos(np.clip((np.trace(rot_dot) - 1) / 2, -1, 1))

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

@@ -3305,9 +3305,8 @@ class AddTextLiteral(bpy.types.Operator):
                 attr.data_type = "string"
                 attr.string_value = literal_attr_values[attr_name]
 
-        box_alignment_mask = [False] * 9
+        literal_props.align_vertical = "bottom"
-        box_alignment_mask[6] = True  # bottom_left box_alignment
+        literal_props.align_horizontal = "left"
-        literal_props.box_alignment = box_alignment_mask
         return {"FINISHED"}
 
 
@@ -4178,10 +4177,7 @@ class SelectSimilarTextLiteralValue(bpy.types.Operator):
                                     should_select = True
                                     break
                         elif self.attribute_type == "box_alignment":
-                            box_alignment_attr = next(
+                            if literal.get_box_alignment() == self.literal_value:
-                                (attr for attr in literal.attributes if attr.name == "BoxAlignment"), None
-                            )
-                            if box_alignment_attr and box_alignment_attr.string_value == self.literal_value:
                                 should_select = True
                                 break
 

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

@@ -673,20 +673,6 @@ class BIMCameraProperties(PropertyGroup):
         return ortho_scale, aspect_ratio
 
 
-DEFAULT_BOX_ALIGNMENT = [False] * 6 + [True] + [False] * 2
-BOX_ALIGNMENT_POSITIONS = [
-    "top-left",
-    "top-middle",
-    "top-right",
-    "middle-left",
-    "center",
-    "middle-right",
-    "bottom-left",
-    "bottom-middle",
-    "bottom-right",
-]
-
-
 class ElementValueRow(PropertyGroup):
     """Represents a single element value row with category, key, and formatted value"""
 
@@ -789,40 +775,38 @@ def get_category_items_with_counts(self, context):
 
 
 class LiteralProps(PropertyGroup):
-    def set_box_alignment(self, new_value):
-        markers = new_value.count(True)
-        if not markers:
-            return
-
-        if markers > 1:
-            prev_value = self.get("box_alignment", DEFAULT_BOX_ALIGNMENT)
-            # looking for the first value changed to positive
-            first_changed_value = next((i for i in range(9) if new_value[i] and new_value[i] != prev_value[i]), None)
-
-            # if nothing have changed we just keep the previous value
-            if first_changed_value is None:
-                return
-            new_value = [False] * 9
-            new_value[first_changed_value] = True
-
-        self["box_alignment"] = new_value
-        position_string = BOX_ALIGNMENT_POSITIONS[next(i for i in range(9) if new_value[i])]
-        self.attributes["BoxAlignment"].set_value(position_string)
-
-    def get_box_alignment(self):
-        return self.get("box_alignment", DEFAULT_BOX_ALIGNMENT)
-
     attributes: CollectionProperty(name="Attributes", type=Attribute)
-    box_alignment: BoolVectorProperty(
-        name="Box alignment", size=9, set=set_box_alignment, get=get_box_alignment, default=DEFAULT_BOX_ALIGNMENT
-    )
     ifc_definition_id: IntProperty(name="IFC definition ID", default=0)
+    align_horizontal: EnumProperty(
+        items=[
+            ("left", "Left", "", "ALIGN_LEFT", 0),
+            ("middle", "Middle", "", "ALIGN_CENTER", 1),
+            ("right", "Right", "", "ALIGN_RIGHT", 2),
+        ],
+        default="left",
+        name="Horizontal Alignment",
+    )
+    align_vertical: EnumProperty(
+        items=[
+            ("top", "Top", "", "ALIGN_TOP", 0),
+            ("middle", "Middle", "", "ALIGN_MIDDLE", 1),
+            ("bottom", "Bottom", "", "ALIGN_BOTTOM", 2),
+        ],
+        default="middle",
+        name="Vertical Alignment",
+    )
+
+    def get_box_alignment(self) -> str:
+        alignment = self.align_vertical + "-" + self.align_horizontal
+        if alignment == "middle-middle":
+            alignment = "center"
+        return alignment
 
     def get_literal_edited_data(self) -> dict[str, str]:
         text_data = {
             "CurrentValue": self.attributes["Literal"].string_value,
             "Literal": self.attributes["Literal"].string_value,
-            "BoxAlignment": self.attributes["BoxAlignment"].string_value,
+            "BoxAlignment": self.get_box_alignment(),
         }
         return text_data
 
@@ -860,12 +844,19 @@ class LiteralProps(PropertyGroup):
     if TYPE_CHECKING:
         attributes: bpy.types.bpy_prop_collection_idprop[Attribute]
         value: str
-        box_alignment: tuple[bool, bool, bool, bool, bool, bool, bool, bool, bool]
         ifc_definition_id: int
+        align_horizontal: str
+        align_vertical: str
         element_value_rows: bpy.types.bpy_prop_collection_idprop[ElementValueRow]
         category_for_adding: str
 
 
+def update_text_alignment(self, context):
+    for literal_props in self.literals:
+        literal_props.align_horizontal = self.align_horizontal
+        literal_props.align_vertical = self.align_vertical
+
+
 class BIMTextProperties(PropertyGroup):
     is_editing: BoolProperty(name="Is Editing", default=False)
     literals: CollectionProperty(name="Literals", type=LiteralProps)
@@ -899,6 +890,7 @@ class BIMTextProperties(PropertyGroup):
         ],
         default="left",
         name="Horizontal Alignment",
+        update=update_text_alignment,
     )
     align_vertical: EnumProperty(
         items=[
@@ -908,6 +900,7 @@ class BIMTextProperties(PropertyGroup):
         ],
         default="middle",
         name="Vertical Alignment",
+        update=update_text_alignment,
     )
 
     if TYPE_CHECKING:

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

@@ -781,33 +781,10 @@ class BIM_PT_text(Panel):
             if other_attributes:
                 bonsai.bim.helper.draw_attributes(other_attributes, box)
 
-            row = box.row(align=True)
+            row = box.row()
-            cols = [row.column(align=True) for j in range(3)]
+            row.label(text="Alignment")
-            for j in range(9):
+            row.prop(literal_props, "align_horizontal", text="", expand=True)
-                cols[j % 3].prop(
+            row.prop(literal_props, "align_vertical", text="", expand=True)
-                    literal_props,
-                    "box_alignment",
-                    text="",
-                    index=j,
-                    icon="RADIOBUT_ON" if literal_props.box_alignment[j] else "RADIOBUT_OFF",
-                )
-
-            col = row.column(align=True)
-            alignment_label_row = col.row(align=True)
-            alignment_label_row.label(text="    Text box alignment:")
-
-            box_alignment_value = (
-                literal_props.attributes[
-                    next(
-                        (idx for idx, attr in enumerate(literal_props.attributes) if attr.name == "BoxAlignment"),
-                        -1,
-                    )
-                ].string_value
-                if any(attr.name == "BoxAlignment" for attr in literal_props.attributes)
-                else "N/A"
-            )
-
-            col.label(text=f"    {box_alignment_value}")
 
     def draw(self, context):
         obj = context.active_object

src/bonsai/bonsai/bim/module/material/data.py

@@ -102,7 +102,6 @@ class MaterialsData:
             if (style_name := s.Name) is not None
         ]
         results = natsorted(results, key=lambda i: i[1])
-        results.insert(0, ("-", "No Surface Style", ""))
         return results
 
     @classmethod

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

@@ -210,14 +210,15 @@ class AssignMaterialToSelected(bpy.types.Operator, tool.Ifc.Operator):
     bl_idname = "bim.assign_material_to_selected"
     bl_label = "Assign Material To Selected"
     bl_description = (
-        "Assign currently selected material in Materials UI to the selected objects.\n\n"
+        "Assign currently selected material in Materials UI to the selected objects.\n"
-        "ALT+CLICK to assign material as a usage."
+        "Occurrences automatically get usages for layer/profile sets.\n\n"
+        "ALT+CLICK to assign without a usage."
     )
     bl_options = {"REGISTER", "UNDO"}
     material: bpy.props.IntProperty(name="Material IFC ID")
-    assign_as_usage: bpy.props.BoolProperty(
+    should_auto_assign_usage: bpy.props.BoolProperty(
-        name="Assign Material As A Usage",
+        name="Auto Assign Usage",
-        default=False,
+        default=True,
         options={"SKIP_SAVE"},
     )
 
@@ -230,25 +231,19 @@ class AssignMaterialToSelected(bpy.types.Operator, tool.Ifc.Operator):
 
     def invoke(self, context, event):
         if event.type == "LEFTMOUSE" and event.alt:
-            material_class = tool.Ifc.get().by_id(self.material).is_a()
+            self.should_auto_assign_usage = False
-            if material_class not in ("IfcMaterialProfileSet", "IfcMaterialLayerSet"):
-                self.report({"ERROR"}, f"{material_class} cannot be assigned as a usage.")
-                return {"CANCELLED"}
-            self.assign_as_usage = True
         return self.execute(context)
 
     def _execute(self, context):
         material = tool.Ifc.get().by_id(self.material)
         objects = tool.Blender.get_selected_objects()
-        material_type = material.is_a()
-        if self.assign_as_usage:
-            material_type += "Usage"
         core.assign_material(
             tool.Ifc,
             tool.Material,
-            material_type=material_type,
+            material_type=material.is_a(),
             objects=objects,
             material=material,
+            should_auto_assign_usage=self.should_auto_assign_usage,
         )
 
 

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

@@ -118,12 +118,17 @@ class BIM_PT_materials(Panel):
             row.operator("bim.edit_material", text="Save Material", icon="CHECKMARK").material = ifc_definition_id
             row.operator("bim.disable_editing_material", text="", icon="CANCEL")
         elif self.props.editing_material_type == "STYLE":
-            row = self.layout.row(align=True)
+            if MaterialsData.data["styles"]:
-            row.prop(self.props, "contexts", text="")
+                row = self.layout.row(align=True)
-            prop_with_search(row, self.props, "styles", text="")
+                row.prop(self.props, "contexts", text="")
-            row = self.layout.row(align=True)
+                prop_with_search(row, self.props, "styles", text="")
-            row.operator("bim.edit_material_style", text="Assign Style", icon="CHECKMARK")
+                row = self.layout.row(align=True)
-            row.operator("bim.disable_editing_material", text="", icon="CANCEL")
+                row.operator("bim.edit_material_style", text="Assign Style", icon="CHECKMARK")
+                row.operator("bim.disable_editing_material", text="", icon="CANCEL")
+            else:
+                row = self.layout.row(align=True)
+                row.label(text="No Styles Found")
+                row.operator("bim.disable_editing_material", text="", icon="CANCEL")
 
 
 class BIM_PT_object_material(Panel):

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

@@ -262,7 +262,7 @@ class BIM_PT_object_psets(Panel):
 
         row = self.layout.row(align=True)
         prop_with_search(row, props, "pset_name", text="")
-        if props.pset_name != "BBIM_BSDD" and not props.pset_name.startswith(tool.Bsdd.identifier_url):
+        if props.pset_name != "BBIM_BSDD" and not props.pset_name.startswith(tool.Bsdd.identifier_url()):
             op = row.operator("bim.add_pset", icon="ADD", text="")
             op.obj = obj.name
             op.obj_type = "Object"

src/bonsai/bonsai/core/material.py

@@ -113,6 +113,7 @@ def assign_material(
     material_type: Union[str, None],
     objects: list[bpy.types.Object],
     material: Optional[ifcopenshell.entity_instance] = None,
+    should_auto_assign_usage: bool = True,
 ) -> None:
     """Assign material to the provided objects.
 
@@ -121,12 +122,18 @@ def assign_material(
     """
     material_type = material_type or material_tool.get_object_ui_material_type()
     material = material or material_tool.get_object_ui_active_material()
+    can_be_usage = should_auto_assign_usage and material_type in ("IfcMaterialLayerSet", "IfcMaterialProfileSet")
     for obj in objects:
         element = ifc.get_entity(obj)
         if not element:
             continue
 
-        ifc.run("material.assign_material", products=[element], type=material_type, material=material)
+        if can_be_usage and not material_tool.is_type_product(element):
+            element_material_type = material_type + "Usage"
+        else:
+            element_material_type = material_type
+
+        ifc.run("material.assign_material", products=[element], type=element_material_type, material=material)
         assigned_material = material_tool.get_material(element)
         assert assigned_material  # Type checker.
 
@@ -136,7 +143,7 @@ def assign_material(
             material_tool.add_material_to_set(material_set=material, material=default_material)
         elif material_tool.is_a_material_set(assigned_material):
             material_tool.add_material_to_set(material_set=assigned_material, material=material)
-        material_tool.ensure_material_assigned(elements=[element], material_type=material_type, material=material)
+        material_tool.ensure_material_assigned(elements=[element], material_type=element_material_type, material=material)
 
 
 def unassign_material(ifc: type[tool.Ifc], material_tool: type[tool.Material], objects: list[bpy.types.Object]) -> None:

src/bonsai/bonsai/core/tool.py

@@ -580,6 +580,7 @@ class Material:
     def import_material_definitions(cls, material_type: str): pass
     def is_a_flow_segment(cls, element): pass
     def is_a_material_set(cls, material): pass
+    def is_type_product(cls, element): pass
     def is_editing_materials(cls): pass
     def is_material_used_in_sets(cls, material): pass
     def load_material_attributes(cls, material): pass

src/bonsai/bonsai/tool/bsdd.py

@@ -36,11 +36,23 @@ if TYPE_CHECKING:
 
 
 class Bsdd(bonsai.core.tool.Bsdd):
-    identifier_url = "https://identifier.buildingsmart.org"
+    default_identifier_url = "https://identifier.buildingsmart.org"
+    default_api_url = "https://api.bsdd.buildingsmart.org/api/"
     client = bsdd.Client()
     bsdd_classes: dict[str, dict] = {}
     bsdd_properties: dict[str, dict] = {}
 
+    @classmethod
+    def identifier_url(cls) -> str:
+        """Derives the identifier base URL from the current client baseurl.
+        Falls back to the standard bSDD identifier URL when using the default API."""
+        if cls.client.baseurl == cls.default_api_url:
+            return cls.default_identifier_url
+        from urllib.parse import urlparse
+
+        parsed = urlparse(cls.client.baseurl)
+        return f"{parsed.scheme}://{parsed.netloc}"
+
     @classmethod
     def get_bsdd_props(cls) -> BIMBSDDProperties:
         assert (scene := bpy.context.scene)
@@ -269,7 +281,7 @@ class Bsdd(bonsai.core.tool.Bsdd):
         for obj in tool.Blender.get_selected_objects(include_active=True):
             if element := tool.Ifc.get_entity(obj):
                 for reference in ifcopenshell.util.classification.get_references(element):
-                    if (uri := reference.Location) and uri.startswith(cls.identifier_url):
+                    if (uri := reference.Location) and uri.startswith(cls.identifier_url()):
                         classes.add((reference[1] or reference[2] or "Unnamed", uri))
 
         dictionary_uris = (
@@ -383,7 +395,7 @@ class Bsdd(bonsai.core.tool.Bsdd):
     def get_applicable_psets(cls, element: ifcopenshell.entity_instance):
         uris = set()
         for reference in ifcopenshell.util.classification.get_references(element):
-            if (uri := reference.Location) and uri.startswith(cls.identifier_url):
+            if (uri := reference.Location) and uri.startswith(cls.identifier_url()):
                 uris.add(uri)
         psets = set()
         for uri in uris:
@@ -399,7 +411,7 @@ class Bsdd(bonsai.core.tool.Bsdd):
     def is_applicable(cls, pset_uri: str, element: ifcopenshell.entity_instance) -> bool:
         uris = set()
         for reference in ifcopenshell.util.classification.get_references(element):
-            if (uri := reference.Location) and uri.startswith(cls.identifier_url):
+            if (uri := reference.Location) and uri.startswith(cls.identifier_url()):
                 uris.add(uri)
         class_uri, pset_name = pset_uri.rsplit("#", 1)
         return class_uri in uris

src/bonsai/bonsai/tool/drawing.py

@@ -603,6 +603,10 @@ class Drawing(bonsai.core.tool.Drawing):
         props = tool.Drawing.get_text_props(obj)
         for literal_props in props.literals:
             literal_data = bonsai.bim.helper.export_attributes(literal_props.attributes)
+            alignment = literal_props.align_vertical + "-" + literal_props.align_horizontal
+            if alignment == "middle-middle":
+                alignment = "center"
+            literal_data["BoxAlignment"] = alignment
             literals.append(literal_data)
         return literals
 
@@ -1176,22 +1180,26 @@ class Drawing(bonsai.core.tool.Drawing):
 
     @classmethod
     def import_text_attributes(cls, obj: bpy.types.Object) -> None:
-        from bonsai.bim.module.drawing.prop import BOX_ALIGNMENT_POSITIONS
-
         props = cls.get_text_props(obj)
         props.literals.clear()
 
         ifc_literals = cls.get_text_literal(obj, return_list=True)
         assert isinstance(ifc_literals, list)
+
+        if ifc_literals:
+            first_alignment = getattr(ifc_literals[0], "BoxAlignment", None) or "bottom-left"
+            if first_alignment == "center":
+                first_alignment = "middle-middle"
+            props.align_vertical, props.align_horizontal = first_alignment.split("-")
+
         for ifc_literal in ifc_literals:
             literal_props = props.literals.add()
             bonsai.bim.helper.import_attributes(ifc_literal, literal_props.attributes)
 
-            box_alignment_mask = [False] * 9
+            alignment = getattr(ifc_literal, "BoxAlignment", None) or "bottom-left"
-            position_string = literal_props.attributes["BoxAlignment"].string_value
+            if alignment == "center":
-            box_alignment_mask[BOX_ALIGNMENT_POSITIONS.index(position_string)] = True
+                alignment = "middle-middle"
-
+            literal_props.align_vertical, literal_props.align_horizontal = alignment.split("-")
-            literal_props.box_alignment = box_alignment_mask  # pyright: ignore[reportAttributeAccessIssue]
             literal_props.ifc_definition_id = ifc_literal.id()
 
         from bonsai.bim.module.drawing.data import DecoratorData

src/bonsai/bonsai/tool/material.py

@@ -226,6 +226,10 @@ class Material(bonsai.core.tool.Material):
             "IfcMaterialProfileSet",
         ]
 
+    @classmethod
+    def is_type_product(cls, element: ifcopenshell.entity_instance) -> bool:
+        return element.is_a("IfcTypeProduct")
+
     @classmethod
     def add_material_to_set(
         cls, material_set: ifcopenshell.entity_instance, material: ifcopenshell.entity_instance

src/bonsai/bonsai/tool/polyline.py

@@ -533,9 +533,12 @@ class Polyline(bonsai.core.tool.Polyline):
             polyline_data = polyline_data[0]
         polyline_points = polyline_data.polyline_points
         if polyline_points:
-            # Avoids creating two points at the same location
+            # Avoids creating two points at the same location.
-            for point in polyline_points[1:]:  # The first can be repeated to form a wall loop
+            # The only exception is repeating the first point to close a loop (requires >= 3 existing points).
+            for i, point in enumerate(polyline_points):
                 if (x, y, z) == (point.x, point.y, point.z):
+                    if i == 0 and len(polyline_points) >= 3:
+                        continue
                     return "Cannot create two points at the same location"
             # Avoids creating overlapping edges
             if len(polyline_points) > 1:

src/bonsai/test/tool/test_drawing.py

@@ -666,10 +666,13 @@ class TestImportTextAttributes(NewFile):
 
         literal_props = props.literals[0]
         assert literal_props.ifc_definition_id == item.id()
-        assert literal_props.box_alignment[:] == tuple([False] * 6 + [True] + [False] * 2)
         assert literal_props.attributes["Literal"].string_value == "Literal"
         assert literal_props.attributes["Path"].enum_value == "RIGHT"
         assert literal_props.attributes["BoxAlignment"].string_value == "bottom-left"
+        assert literal_props.align_vertical == "bottom"
+        assert literal_props.align_horizontal == "left"
+        assert props.align_vertical == "bottom"
+        assert props.align_horizontal == "left"
 
 
 class TestReplaceTextLiteralVariables(NewFile):

src/ifcgeom/Iterator.cpp

@@ -620,17 +620,7 @@ const IfcGeom::Element* IfcGeom::Iterator::get_object(int id) {
 		}
 	} catch (const std::exception& e) {
 		Logger::Error(e);
-	}
+	} catch (...) {
-#ifdef IFOPSH_WITH_OPENCASCADE
-	catch (const Standard_Failure& e) {
-		if (e.GetMessageString() && strlen(e.GetMessageString())) {
-			Logger::Error(e.GetMessageString());
-		} else {
-			Logger::Error("Unknown error returning product");
-		}
-	}
-#endif
-	catch (...) {
 		Logger::Error("Unknown error returning product");
 	}
 
@@ -645,18 +635,7 @@ const IfcUtil::IfcBaseClass* IfcGeom::Iterator::create() {
 	} catch (const std::exception& e) {
 		Logger::Error(e);
 		had_error_processing_elements_ = true;
-	}
+	} catch (...) {
-#ifdef IFOPSH_WITH_OPENCASCADE
-	catch (const Standard_Failure& e) {
-		if (e.GetMessageString() && strlen(e.GetMessageString())) {
-			Logger::Error(e.GetMessageString());
-		} else {
-			Logger::Error("Unknown error creating geometry");
-		}
-		had_error_processing_elements_ = true;
-	}
-#endif
-	catch (...) {
 		Logger::Error("Unknown error creating geometry");
 		had_error_processing_elements_ = true;
 	}

src/ifcgeom/Iterator.h

@@ -68,10 +68,6 @@
 #include "../ifcgeom/abstract_mapping.h"
 #include "../ifcgeom/GeometrySerializer.h"
 
-#ifdef IFOPSH_WITH_OPENCASCADE
-#include <Standard_Failure.hxx>
-#endif
-
 #include <boost/algorithm/string.hpp>
 
 #include <map>

src/ifcgeom/kernels/opencascade/OpenCascadeKernel.h

@@ -56,6 +56,21 @@
 #include "../../../ifcgeom/taxonomy.h"
 #include "../../../ifcgeom/ConversionSettings.h"
 
+namespace {
+template <typename Fn>
+bool handle_occt_exception(Fn&& fn) {
+    try {
+        return std::forward<Fn>(fn)();
+    } catch (const Standard_Failure& e) {
+        if (e.GetMessageString() && strlen(e.GetMessageString())) {
+            throw std::runtime_error(e.GetMessageString());
+		} else {
+            throw std::runtime_error("Unknown error creating geometry");
+		}
+    }
+}
+}
+
 namespace IfcGeom {
 
 class IFC_GEOMLIBRARY_API OpenCascadeKernel : public ifcopenshell::geometry::kernels::AbstractKernel {

src/ifcgeom/kernels/opencascade/boolean_result.cpp

@@ -84,6 +84,7 @@ namespace {
 }
 
 bool OpenCascadeKernel::convert_impl(const taxonomy::boolean_result::ptr br, ConversionResults& results) {
+    return handle_occt_exception([&]() -> bool {
 	bool valid_result = false;
 	bool first = true;
 	const double tol = settings_.get<settings::Precision>().get();
@@ -196,4 +197,5 @@ bool OpenCascadeKernel::convert_impl(const taxonomy::boolean_result::ptr br, Con
 	));
 
 	return true;
+    });
 }

src/ifcgeom/kernels/opencascade/extrusion.cpp

@@ -72,6 +72,8 @@ bool OpenCascadeKernel::convert(const taxonomy::extrusion::ptr extrusion, TopoDS
 }
 
 bool OpenCascadeKernel::convert_impl(const taxonomy::extrusion::ptr extrusion, IfcGeom::ConversionResults& results) {
+    return handle_occt_exception([&]() -> bool {
+
 	TopoDS_Shape shape;
 	if (!convert(extrusion, shape)) {
 		return false;
@@ -84,4 +86,6 @@ bool OpenCascadeKernel::convert_impl(const taxonomy::extrusion::ptr extrusion, I
 		extrusion->surface_style
 	));
 	return true;
+
+	});
 }

src/ifcgeom/kernels/opencascade/face.cpp

@@ -599,6 +599,8 @@ bool OpenCascadeKernel::convert(const taxonomy::face::ptr face, TopoDS_Shape& re
 }
 
 bool OpenCascadeKernel::convert_impl(const taxonomy::face::ptr face, IfcGeom::ConversionResults& results) {
+    return handle_occt_exception([&]() -> bool {
+
 	TopoDS_Shape shape;
 	if (!convert(face, shape)) {
 		return false;
@@ -609,4 +611,6 @@ bool OpenCascadeKernel::convert_impl(const taxonomy::face::ptr face, IfcGeom::Co
 		face->surface_style
 	));
 	return true;
+
+	});
 }

src/ifcgeom/kernels/opencascade/loft.cpp

@@ -427,6 +427,8 @@ bool OpenCascadeKernel::convert(const taxonomy::loft::ptr loft, TopoDS_Shape& re
 }
 
 bool OpenCascadeKernel::convert_impl(const taxonomy::loft::ptr loft, IfcGeom::ConversionResults& results) {
+    return handle_occt_exception([&]() -> bool {
+
 	TopoDS_Shape shape;
 	if (!convert(loft, shape)) {
 		return false;
@@ -438,4 +440,6 @@ bool OpenCascadeKernel::convert_impl(const taxonomy::loft::ptr loft, IfcGeom::Co
 		loft->surface_style
 	));
 	return true;
+
+    });
 }

src/ifcgeom/kernels/opencascade/loop.cpp

@@ -378,6 +378,8 @@ bool OpenCascadeKernel::convert(const taxonomy::loop::ptr loop, TopoDS_Wire& wir
 }
 
 bool OpenCascadeKernel::convert_impl(const taxonomy::loop::ptr loop, IfcGeom::ConversionResults& results) {
+    return handle_occt_exception([&]() -> bool {
+
 	TopoDS_Wire shape;
 	if (!convert(loop, shape)) {
 		return false;
@@ -389,9 +391,13 @@ bool OpenCascadeKernel::convert_impl(const taxonomy::loop::ptr loop, IfcGeom::Co
 		loop->surface_style
 	));
 	return true;
+
+	});
 }
 
 bool OpenCascadeKernel::convert_impl(const taxonomy::edge::ptr edge, IfcGeom::ConversionResults& results) {
+    return handle_occt_exception([&]() -> bool {
+
 	TopoDS_Wire shape = boost::get<TopoDS_Wire>(convert_curve(edge));
 
 	results.emplace_back(ConversionResult(
@@ -400,4 +406,6 @@ bool OpenCascadeKernel::convert_impl(const taxonomy::edge::ptr edge, IfcGeom::Co
 		edge->surface_style
 	));
 	return true;
+
+	});
 }

src/ifcgeom/kernels/opencascade/shell.cpp

@@ -107,6 +107,8 @@ bool OpenCascadeKernel::convert(const taxonomy::shell::ptr l, TopoDS_Shape& shap
 }
 
 bool OpenCascadeKernel::convert_impl(const taxonomy::shell::ptr shell, IfcGeom::ConversionResults& results) {
+    return handle_occt_exception([&]() -> bool {
+
 	TopoDS_Shape shape;
 	if (!convert(shell, shape)) {
 		return false;
@@ -118,4 +120,6 @@ bool OpenCascadeKernel::convert_impl(const taxonomy::shell::ptr shell, IfcGeom::
 		shell->surface_style
 	));
 	return true;
+
+	});
 }

src/ifcgeom/kernels/opencascade/solid.cpp

@@ -102,6 +102,8 @@ bool OpenCascadeKernel::convert(const taxonomy::solid::ptr solid, TopoDS_Shape&
 }
 
 bool OpenCascadeKernel::convert_impl(const taxonomy::solid::ptr solid, IfcGeom::ConversionResults& results) {
+    return handle_occt_exception([&]() -> bool {
+
 	TopoDS_Shape shape;
 	if (!convert(solid, shape)) {
 		return false;
@@ -113,4 +115,6 @@ bool OpenCascadeKernel::convert_impl(const taxonomy::solid::ptr solid, IfcGeom::
 		solid->surface_style
 	));
 	return true;
+
+	});
 }

src/ifcgeom/kernels/opencascade/sweep_along_curve.cpp

@@ -308,6 +308,8 @@ bool OpenCascadeKernel::convert(const taxonomy::sweep_along_curve::ptr scs, Topo
 }
 
 bool OpenCascadeKernel::convert_impl(const taxonomy::sweep_along_curve::ptr scs, IfcGeom::ConversionResults& results) {
+    return handle_occt_exception([&]() -> bool {
+
 	TopoDS_Shape shape;
 	// For tiny radii occt will fail building the sweep, in which case we enlarge the inputs to occt, and add a scale matrix to the output
 	bool enlarged = false;
@@ -352,4 +354,6 @@ bool OpenCascadeKernel::convert_impl(const taxonomy::sweep_along_curve::ptr scs,
 		scs->surface_style
 	));
 	return true;
+
+	});
 }