First Commit

2026-05-31 10:17:09 +07:00
commit 17a9c69379
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+# IfcOpenShell - IFC toolkit and geometry engine
+# Copyright (C) 2021 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
+
+
+def remove_cost_value(
+    file: ifcopenshell.file, parent: ifcopenshell.entity_instance, cost_value: ifcopenshell.entity_instance
+) -> None:
+    """Removes a cost value
+
+    The cost value may be assigned either to a cost item, a construction
+    resource, or another cost value (i.e. it is a subcomponent of a cost)
+
+    :param parent: The IfcCostItem, IfcConstructionResource, or IfcCostValue
+        that the IfcCostValue is assigned to.
+    :param cost_value: The IfcCostValue that you want to remove
+    :return: None
+
+    Example:
+
+    .. code:: python
+
+        schedule = ifcopenshell.api.cost.add_cost_schedule(model)
+        item = ifcopenshell.api.cost.add_cost_item(model, cost_schedule=schedule)
+
+        # This cost item will have a unit cost of 5 and a volume of 3
+        value = ifcopenshell.api.cost.add_cost_value(model, parent=item)
+        ifcopenshell.api.cost.edit_cost_value(model, cost_value=value,
+            attributes={"AppliedValue": 5.0})
+
+        ifcopenshell.api.cost.remove_cost_value(model, parent=item, cost_value=value)
+    """
+    if file.get_total_inverses(cost_value) == 1:
+        file.remove(cost_value)
+        # TODO deep purge
+    elif parent.is_a("IfcCostItem"):
+        values = list(parent.CostValues)
+        values.remove(cost_value)
+        parent.CostValues = values if values else None
+    elif parent.is_a("IfcConstructionResource"):
+        values = list(parent.BaseCosts)
+        values.remove(cost_value)
+        parent.BaseCosts = values if values else None
+    elif parent.is_a("IfcCostValue"):
+        components = list(parent.Components)
+        components.remove(cost_value)
+        parent.Components = components if components else None