Openings are no longer loaded when loading fresh IFC projects

src/ifcopenshell-python/ifcopenshell/api/geometry/add_boolean.py

@@ -0,0 +1,63 @@
+# IfcOpenShell - IFC toolkit and geometry engine
+# Copyright (C) 2022 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of IfcOpenShell.
+#
+# IfcOpenShell is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# IfcOpenShell is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with IfcOpenShell.  If not, see <http://www.gnu.org/licenses/>.
+
+import ifcopenshell.util.unit
+
+
+class Usecase:
+    def __init__(self, file, **settings):
+        self.file = file
+        self.settings = {
+            "representation": None,
+            "operator": "DIFFERENCE",
+            # The XY plane is the clipping boundary and +Z is removed.
+            "matrix": None,  # A matrix to define a clipping half space solid.
+        }
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        self.settings["unit_scale"] = ifcopenshell.util.unit.calculate_unit_scale(self.file)
+        self.settings["representation"].RepresentationType = "Clipping"
+        result = self.create_half_space_solid()
+        items = []
+        for item in self.settings["representation"].Items:
+            items.append(self.file.createIfcBooleanResult(self.settings["operator"], item, result))
+        self.settings["representation"].Items = items
+
+    def create_half_space_solid(self):
+        clipping = self.settings["matrix"]
+        return self.file.createIfcHalfSpaceSolid(
+            self.file.createIfcPlane(
+                self.file.createIfcAxis2Placement3D(
+                    self.file.createIfcCartesianPoint(
+                        (
+                            self.convert_si_to_unit(clipping[0][3]),
+                            self.convert_si_to_unit(clipping[1][3]),
+                            self.convert_si_to_unit(clipping[2][3]),
+                        )
+                    ),
+                    self.file.createIfcDirection((clipping[0][2], clipping[1][2], clipping[2][2])),
+                    self.file.createIfcDirection((clipping[0][0], clipping[1][0], clipping[2][0])),
+                )
+            ),
+            False,
+        )
+
+    def convert_si_to_unit(self, co):
+        return co / self.settings["unit_scale"]

src/ifcopenshell-python/ifcopenshell/api/geometry/remove_boolean.py

@@ -0,0 +1,53 @@
+# IfcOpenShell - IFC toolkit and geometry engine
+# Copyright (C) 2022 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of IfcOpenShell.
+#
+# IfcOpenShell is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# IfcOpenShell is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with IfcOpenShell.  If not, see <http://www.gnu.org/licenses/>.
+
+import ifcopenshell.util.element
+
+
+class Usecase:
+    def __init__(self, file, **settings):
+        self.file = file
+        self.settings = {"item": None}
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        item = None
+        for inverse in self.file.get_inverse(self.settings["item"]):
+            if inverse.is_a("IfcBooleanResult"):
+                item = inverse
+                break
+
+        representation = self.get_representation(item)
+
+        first_operand = item.FirstOperand
+        second_operand = item.SecondOperand
+        for inverse in self.file.get_inverse(item):
+            ifcopenshell.util.element.replace_attribute(inverse, item, first_operand)
+        self.file.remove(item)
+        ifcopenshell.util.element.remove_deep2(self.file, second_operand)
+
+        if not [i for i in representation.Items if i.is_a("IfcBooleanResult")]:
+            representation.RepresentationType == "SweptSolid"
+
+    def get_representation(self, item):
+        for inverse in self.file.get_inverse(item):
+            if inverse.is_a("IfcShapeRepresentation"):
+                return inverse
+            elif inverse.is_a("IfcRepresentationItem"):
+                return self.get_representation(inverse)