Changes in release 19.0 (2021-07-19)

• Version 19 release.

• Updated with support for IFC 4x3 RC4 with the latest entities for bridge and rail design.

• Reads and writes IfcDistributionControlElement.ControlElementId for IFC2x3 but supresses it in IFC4 for both root and subtypes.

Changes in release 18.1 (2019-10-28)

• Version 18 Service Pack One release.

• Added support for IFC 4x2 with new bridge design entities and modifications to the grid and linear placement entities.

• IfclibSchemaType values now sorted into ascending IFC version release date. The ifclib_schema_other value is above the newest recognized IFC version.

• Relax type of IfcRelConnectsPortToElement.RelatedElement attribute from IfcDistributionElement back to the IfcElement supertype used by IFC2x3. Some systems create data with BuildingProxy elements, which are not of the subtype.

Changes in release 18.0 (2018-10-01)

• Version 18 release.

• The C++ class for IfcTriangulatedFaceSet now has both the current PnIndex (list of ints) field and the older NormalIndex field (list of list of ints). Only the PhIndex field will be written. When reading, the NormalIndex field will be set if the file uses a list of list of integers, otherwise the PhIndex field will be set.

• Added the following #defines for testing with the preprocessor.
  • IFCLIB_SCHEMA_MERGED
  • IFCLIB_SCHEMA_HAS_IFC2X2
  • IFCLIB_SCHEMA_HAS_IFC2X3
  • IFCLIB_SCHEMA_HAS_IFC4
  • IFCLIB_SCHEMA_HAS_IFC4X1

Changes in release 17.3 (2018-05-18)

• Update schema to IFC4x1 final version, which adds the following new entities for infrastructure alignment.
  • IfcAlignment
  • IfcAlignment2DHorizontal
  • IfcAlignment2DHorizontalSegment
  • IfcAlignment2DSegment
  • IfcAlignment2DVerSegCircularArc
  • IfcAlignment2DVerSegLine
  • IfcAlignment2DVerSegParabolicArc
  • IfcAlignment2DVertical
  • IfcAlignment2DVerticalSegment
  • IfcAlignmentCurve
  • IfcCircularArcSegment2D
  • IfcCurveSegment2D
  • IfcDistanceExpression
  • IfcLineSegment2D
  • IfcLinearPlacement
  • IfcLinearPositioningElement
  • IfcOffsetCurve
  • IfcOffsetCurveByDistances
  • IfcOrientationExpression
  • IfcPositioningElement
  • IfcReferent
  • IfcSectionedSolid
  • IfcSectionedSolidHorizontal
  • IfcTransitionCurveSegment2D
  • IfcTriangulatedIrregularNetwork

• Added IfcElectricalElement to support older 2x3 files.

Changes in release 17.2 (2018-04-12)

• Add back IfcElectricDistributionPoint entity and supporting enum, which was the only flow controller subtype in IFC2x3 before being replaced by many subtypes in IFC4.

Changes in release 17.1 (2017-12-29)

• IFC schema update to Addendum 2 TC1, which corrects some EXPRESS rules and adds IfcSurfaceCurve to the IfcCurveOnSurface select type.

• Update for roselib ABI changes, and retirement of custom all-atts ctors. Use the default ctor and individual attribute set functions to populate objects.

Changes in release 17.0 (2017-04-07)

• Updated schema for IFC4 Addendum 2

Changes in release 16.7 (2016-07-19)

• Updated schema for IFC4 Addendum 2

Changes in release 16.6 (2016-06-01)

• Update for ST-Developer v16 SP4

Changes in release 16.5 (2016-04-18)

• IfcSurfaceStyleShading gained an optional attribute moved from a subtyle in ifc4_add1. Supressing warnings about the extra attribute when reading or writing IFC 2x3 data.

Changes in release 16.4 (2015-09-21)

• Update for ST-Developer v16 SP3

Changes in release 16.3 (2015-07-24)

• Update the IFC schema to Addendum 1. Most changes are minor clarifications such as descriptive WHERE names or changing a primitive value to an IFC typedef, such as REAL -> IfcReal. The IfcCartesianPointList2D and IfcIndexedPolyCurve entities are new, and to pull in some supporting TYPES and FUNCTIONS.

Changes in release 16.2 (2015-04-29)

• Rebuild for ST-Developer Service Pack #2

Changes in release 16.1 (2015-04-01)

• Corrected case-sensitive comparison issue that caused schema initialization issues on Linux, AIX, Solaris, and HPUX.

• Add aliases for reading old types that were removed in IFC4. These are simple subtypes with no extra fields, so just handle them as instances of the supertype.
  • IfcBezierCurve => IfcBsplineCurve
  • IfcRationalBezierCurve => IfcBsplineCurve
  • Ifc2DCompositeCurve => IfcCompositeCurve

• Added automatic migration support for types that have extra attributes in IFC4 but no other significant structural changes. The extra fields are present when writing IFC4 but not used when writing the file as IFC2x3 or IFC2x2. There are no longer warnings about missing fields when reading these types in IFC2x3 data.
  • IfcBeam
  • IfcBuildingElementPart
  • IfcClassification
  • IfcClassificationReference
  • IfcColumn
  • IfcCurtainWall
  • IfcCurveStyle
  • IfcDiscreteAccessory
  • IfcDiscreteAccessoryType
  • IfcDistributionChamberElement
  • IfcDistributionPort
  • IfcDocumentReference
  • IfcDoor
  • IfcDoorLiningProperties
  • IfcFastener
  • IfcFastenerType
  • IfcFillAreaStyle
  • IfcFurnitureType
  • IfcGrid
  • IfcIShapeProfileDef
  • IfcLibraryReference
  • IfcMaterial
  • IfcMaterialLayer
  • IfcMaterialLayerSet
  • IfcMaterialLayerSetUsage
  • IfcMechanicalFastener
  • IfcMechanicalFastenerType
  • IfcMember
  • IfcMetric
  • IfcOpeningElement
  • IfcPlate
  • IfcProjectOrder
  • IfcProjectionElement
  • IfcPropertyBoundedValue
  • IfcPropertyTableValue
  • IfcQuantityArea
  • IfcQuantityCount
  • IfcQuantityLength
  • IfcQuantityTime
  • IfcQuantityVolume
  • IfcQuantityWeight
  • IfcRampFlight
  • IfcReinforcingMesh
  • IfcStairFlight
  • IfcStructuralCurveConnection
  • IfcStructuralCurveMember
  • IfcStructuralPointConnection
  • IfcSystemFurnitureElementType
  • IfcTable
  • IfcTelecomAddress
  • IfcTendonAnchor
  • IfcTextStyle
  • IfcWall
  • IfcWallStandardCase
  • IfcWindow
  • IfcWindowLiningProperties
  • IfcZone

Changes in release 16.0 (2014-03-26)

Changes in release 15.6 (2014-01-30)

• Updated builtin schema initialization to work with multiple copies.

• Rebuild for ROSE library updates in Beta 6

Changes in release 15.5 (2013-09-09)

• Rebuild for ROSE library updates in Beta 5

Changes in release 15.4 (2013-05-20)

• Rebuild for ROSE library updates in Beta 4

Changes in release 15.3 (2013-04-11)

• Updated to the final production release of the IFC4 schema.

• Changed name of library and package to ifcbim, following the naming style used with the stpcad and stpman libraries.

Changes in release 15.2 (2012-10-17)

• Added DLL versions of the library to the release.

• Updated documentation with ported sample programs from ifc2x3. The IFC4 schema adds some new intermediate select types in some fields and many entities have new attributes at the end.

Changes in release 15.1 (2012-10-16)

• Internal release

Changes in release 15.0 (2012-10-16)

• Initial version, built from IFC4 RC4 for use with ST-Developer 15

• Added additional ifclib_* functions to handle file reading from other versions of the IFC schema. This will be needed for working with the many IFC 2x3 implementations.