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README.md

IfcPatch

Utility for applying modification recipes to IFC files. IfcPatch enables programmatic editing and correction of IFC models through a collection of patches that can fix common issues, migrate data, or transform models.

Available Recipes

Alignment and Linear Placement

  • AddGeometricRepresentationToAlignment - Add geometric representations to alignment elements
  • AddLinearPlacementFallbackPosition - Add fallback positions for linear placements
  • AddZeroLengthSegmentToAlignment - Add zero-length segments to alignments
  • PatchStationReferentPosition - Patch station referent positions

Data Conversion and Migration

  • AGS2IFC - Convert AGS (geotechnical) data to IFC
  • ConvertLengthUnit - Convert between length units
  • ConvertNestToAggregate - Convert nesting relationships to aggregations
  • ConvertPropertiesToQuantities - Convert properties to quantities
  • Migrate - Migrate between IFC schema versions

Element Extraction and Manipulation

  • ExtractElements - Extract specific elements into a new model
  • ExtractPropertiesToSQLite - Export properties to SQLite database
  • Ifc2Sql - Convert IFC to SQL database
  • TessellateElements - Tessellate elements into triangulated geometry

Fixing Software-Specific Issues

  • FixArchiCADToRevitDoorSwings - Fix door swing orientation from ArchiCAD for Revit
  • FixArchiCADToRevitSpaces - Fix space data from ArchiCAD for Revit
  • FixRevit2025TINs - Fix TIN (Triangulated Irregular Network) issues from Revit 2025
  • FixRevitClassificationCodeTypes - Fix classification code data types from Revit
  • FixRevitTINs - Fix TIN issues from Revit

Geometry and Representation

  • AssignConstituentFractions - Assign fractions to material constituents
  • DowngradeIndexedPolyCurve - Convert indexed poly curves to simpler representations
  • RemoveSiteRepresentation - Remove geometric representation from site elements

Merging and Optimization

  • MergeDuplicateTypes - Merge duplicate element types
  • MergeProjects - Merge multiple IFC projects
  • MergeStyles - Merge duplicate styles
  • Optimise - Optimize file size and structure
  • PurgeData - Remove unused data from model

Spatial and Coordinate Systems

  • OffsetObjectPlacements - Offset object placement coordinates
  • OffsetStoreyElevations - Offset storey elevations
  • ResetAbsoluteCoordinates - Reset absolute coordinates to origin
  • ResetSpatialElementLocations - Reset spatial element locations
  • SetFalseOrigin - Set a false origin for coordinates
  • SetRefElevation - Set reference elevation
  • SetWorldCoordinateSystem - Set world coordinate system
  • SplitByBuildingStorey - Split model by building storeys

Utilities

  • RecycleNonRootedElements - Remove or recycle non-rooted elements
  • RegenerateGlobalIds - Regenerate GlobalId values for elements
  • RemoveRevitUniformatClassification - Remove Revit Uniformat classification
  • UnsharePsets - Unshare property sets between elements