IfcIO v0.7.0

Major Additions & Capabilities

• IfcOpenShell-Compatible Query Selector Engine (IfcSelector / IfcIO.Query):
  • Declarative filtering syntax matching IfcOpenShell query selectors:
    • Entity types (IfcWall, IFCWALLSTANDARDCASE, *).
    • Spatial hierarchy containers (#Level 1, @Level 2).
    • Property, attribute, and quantity filters with operators: =, !=, *=, ^=, $=, >, <, >=, <=, and existence checks ([LoadBearing=TRUE], [FireRating>=60], [Name*='Conc']).
    • Comma-separated union lists (IfcWall, IfcColumn).
  • Native integration: model.Select(query) and element extension method element.Matches(query, model).
• Model Repair, Cleanup, Coordinate Shifting & Merging Recipes (IfcPatch / IfcIO.Patch):
  • Direct 100% managed .NET implementation of IfcOpenShell ifcpatch recipe architecture.
  • Purge: removes unreferenced, empty, and duplicate property sets, quantity sets, and orphaned empty storeys.
  • ResetCoordinates: detects large absolute UTM/Civil coordinates (> 10,000m) and centers geometry at local (0, 0, 0) to eliminate 32-bit/64-bit floating point precision jitter.
  • OffsetCoordinates: translates all 3D mesh vertices by an offset vector.
  • Extract: slices a subset of elements matching an IfcSelector query into a new, self-contained IFC model preserving spatial hierarchy, units, and materials.
  • Merge: combines multiple IFC models into a single coordinated model, reconciling storeys by name and elevation and re-indexing IDs sequentially.
• buildingSMART Information Delivery Specification (IDS 1.0) Audit Engine (IfcIdsValidator / IfcIO.Validation.Ids):
  • Implements the buildingSMART IDS 1.0 specification standard mirroring IfcOpenShell / IfcTester audit pipelines.
  • Validates <applicability> criteria (entities, properties, materials) and <requirements> facets (properties with minOccurs/values, materials, attributes like Name, Tag, Description).
  • Direct BCF 2.1 integration: report.SaveBcf(path) exports compliance issues and failed element GUIDs into a standard .bcfzip for BIM issue tracking in Revit, Solibri, and BIMcollab.
• Tabular Property CSV Roundtrip Bridge (IfcCsvBridge / IfcIO.Model):
  • Mirroring ifccsv functionality in pure managed .NET.
  • ExportCsv: exports element metadata and custom property set parameters to delimiter-separated spreadsheets (.csv).
  • ImportCsv: bulk property updates and additions back into IFC model elements matched by GlobalId or Id.
• CLI Enhancements (IfcIO.Cli):
  • ifcio query <model.ifc> <selector>: inspect elements matching selector query.
  • ifcio patch <model.ifc> -o <out.ifc> [--purge] [--reset-coords] [--offset X,Y,Z] [--extract <query>]: run model repair and coordinate recipes.
  • ifcio validate-ids <model.ifc> <audit.ids> [--bcf <issues.bcfzip>]: perform automated IDS 1.0 audit and export BCF topics.
  • ifcio export-csv <model.ifc> -o <out.csv> [--props P1,P2]: export tabular property schedules.
  • ifcio import-csv <model.ifc> --csv <in.csv> -o <out.ifc>: import modified property parameters into an IFC model.