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.api
+import ifcopenshell.util.constraint
+import ifcopenshell.util.date
+import ifcopenshell.util.resource
+
+
+def calculate_resource_usage(file: ifcopenshell.file, resource: ifcopenshell.entity_instance) -> None:
+    """Calculates the number of resources required to perform scheduled work on a task.
+
+    :param resource: The IfcConstructionResource to calculate the usage for.
+    :return: None
+    """
+
+    if ifcopenshell.util.constraint.is_attribute_locked(resource, "Usage.ScheduleUsage"):
+        return
+    if not resource.Usage or not resource.Usage.ScheduleWork:
+        return
+
+    task = ifcopenshell.util.resource.get_task_assignments(resource)
+    if not task or not task.TaskTime:
+        return
+
+    if not task.TaskTime.DurationType or task.TaskTime.DurationType == "WORKTIME":
+        hours_per_day = 8
+    else:
+        hours_per_day = 24
+
+    task_duration = ifcopenshell.util.date.ifc2datetime(task.TaskTime.ScheduleDuration)
+    seconds = task_duration.days * hours_per_day * 60 * 60
+    seconds += task_duration.seconds
+
+    person_hours = ifcopenshell.util.date.ifc2datetime(resource.Usage.ScheduleWork)
+
+    required_resources = person_hours.total_seconds() / seconds
+    resource.Usage.ScheduleUsage = float(required_resources)