ifc-schedule

Construction scheduling as a borrowed view over the IFC model: work plans and schedules, tasks and task times, sequences with lag, calendars, recurrence and events, plus the sequence graph and a deterministic execution order. Dates and durations are returned as authored (ISO 8601 strings, or IFC2X3 date records and time measures), not computed.

cargo add ifc-schedule

The openbim-ifc facade also provides it behind its schedule feature.

• API documentation: docs.rs/ifc-schedule
• Reference page: openbimrs.github.io/ifc
• Source and issues: github.com/openbimrs/ifc

Design notes

• The crate depends on ifc-model and, for the bundled release tables, ifc-schema. The tables lay out the records the *_with_owner_history writers author in the model's declared release (#202), and the task, work-control, sequence, assignment, calendar and event readers find every attribute by name in that release's table (#212, #234), so IFC4X3's IfcWorkTime.StartDate/FinishDate read as IFC4's Start/Finish. A header they cannot bind (IFC4X1, IFC4X2, several schemas) is refused with ScheduleReadError.
• A task's times are its IfcTaskTime or IfcTaskTimeRecurring in IFC4 and IFC4X3 (Task::time, TaskTime::recurrence), and in IFC2X3 the IfcScheduleTimeControl its IfcRelAssignsTasks names (Task::schedule_time_controls) (#235).