Exporter IFCUtils Class

System Object
Autodesk.Revit.DB.IFC ExporterIFCUtils

	Name	Description
	AddClippingsToBaseExtrusion
	AddValueString	Adds a string value to a built-in parameter.
	AreSolidsEqual	Determines whether two solids are identical, potentially offset from each other.
	CanExportWallGeometryAsExtrusion	Identifies if the base geometry of the wall can be represented as an extrusion.
	CollectGeometryInfo(ExporterIFC, IFCGeometryInfo, GeometryObject, XYZ, Boolean)	Collects all the target geometry from the input geometry object and adds it as IFC handles to the IFCInfo.
	CollectGeometryInfo(ExporterIFC, IFCGeometryInfo, GeometryObject, XYZ, Boolean, Transform)	Collects all the target geometry from the input geometry object and adds it as IFC handles to the IFCInfo.
	ComputeAreaOfCurveLoops
	ComputeRoofProjectedArea	Returns the projected area of the room, unscaled.
	ComputeSubcomponents	Splits a roof or floor element composed of planar surfaces into a set of roughly vertical extruded loops of uniform depth if possible.
	CreateAlternateGUID	Creates a GUID for the given element.
	CreateGUID	Creates a randomized GUID.
	CreateProjectLevelGUID	Creates a GUID from Revit project for given GUIDType.
	CreateSubElementGUID	Creates a consistent GUID for an IFC entity related to a Revit element. A "related" sub-element is one that is unique for a given type of element, and can therefore by identified by a simple index value (e.g. PSet_Wall_Common property set for a wall.) The index value 0 is reserved, as this would generate the GUID of the element itself. A listing of known sub-elements is contained in IFCSubElementEnums.cs; it is expected that this list would be maintained up-to-date, instead of passing arbitrary values into this function.
	EndExportInternal	Use the internal Revit implementation to relate elements at the end of export.
	ExportExtrudedSlabOpenings
	ExportSlabAsExtrusion
	GetAttachedColumns	Obtains a list of columns known to Revit as intersecting with this wall.
	GetConnectedWalls	Obtains the IFC-specific information regarding the connections between this wall and other elements.
	GetDoor2DArcsFromFamily	Gets the arcs associated with the plan view of a door.
	GetElevationProfile	Obtains the curve loops which bound the wall's elevation profile.
	GetGeometryFromInplaceWall	Obtains a special snapshot of the geometry of an in-place wall element suitable for export.
	GetGlobal2DDirectionHandles	Obtains the handles representing the cardinal directions in 2D.
	GetGlobal2DOriginHandle	Obtains the handle representing the 2D origin.
	GetGlobal3DDirectionHandles	Obtains the handles representing the cardinal directions in 3D.
	GetGlobal3DOriginHandle	Obtains the handle representing the 3D origin.
	GetInstanceCutoutFromWall	Gets the curve loop corresponding to the hole in the wall made by the instance.
	GetLegacyCurtainSubElements	Gets the sub elements from a legacy curtain element.
	GetLegacyStairOrRampComponents	Gets the components of a stair or ramp.
	GetLegacyStairsProperties	Returns one or more properties for legacy (created in R2012 or before) Stairs.
	GetLevelIdByHeight	Gets the level if by the height of the element.
	GetLoopsFromTopBottomFace	Gets the curve loop(s) that represent the bottom or top face of the wall, usable to create an extrusion for the wall geometry.
	GetMinSymbolHeight	Obtains the minimum height of the given FamilySymbol.
	GetMinSymbolWidth	Obtains the minimum width of the given FamilySymbol.
	GetNumBuildingStoreys	Obsolete. Returns the number of non-empty, non-duplicate building stories in the file.
	GetOpeningData	Gets the openings data from the element.
	GetOriginalSymbol	Returns the original family symbol of this family instance, before the instance is modified by joins, cuts, coping, extensions, or other post-processing.
	GetRelativeLocalPlacementOffsetTransform	Obtains the relative transform between two IfcLocalPlacement handles.
	GetRoofComponents	Gets the components of roof slabs.
	GetRoomBoundaryAsCurveLoopArray	Obtains the spatial element boundary curves as an array of CurveLoops, needed for processing into IFC-specific elements later.
	GetTransformForDoorOrWindow	Obtains the transform for the door or window instance.
	GetUnscaledTransform	Obtains the unscaled transform from an IfcLocalPlacement handle.
	GetUnscaledTransformWithoutFixOfDirection	Obtains the unscaled transform from an IfcLocalPlacement handle without fix of direction.
	GetWallBaseOffset	Obtains the base offset of the wall.
	GetWallTrimmedCurve	Obtains the curve of the wall trimmed or extended according to the end conditions of the wall.
	HasElevationProfile	Identifies if the wall has a sketched elevation profile.
	IsCurveFromOtherElementSketch	Identifies if the given curve element is generated by another element's sketch, or if it represents an independent curve element accessible directly by the user.
	IsCurveLoopConvexWithOpenings	Checks if the region bounded by the input curve loop can be represented as the subtraction of 0 or more convex polygons from a base convex polygon.
	IsWallBaseRectangular	Identifies if the wall's base can be represented by a direct thickening of the wall's base curve.
	IsWallCompletelyClipped	Determines if the input wall is completely removed by interaction with other elements within the given range.
	IsWallJoinedToTop	Checks if wall is joined to top.
	SetGlobal2DDirectionHandles	Sets the handles representing the cardinal directions in 2D.
	SetGlobal2DOriginHandle	Sets the handle representing the 2D origin.
	SetGlobal3DDirectionHandles	Sets the handles representing the cardinal directions in 3D.
	SetGlobal3DOriginHandle	Sets the handle representing the 3D origin.
	SortCurveLoops
	TransformAndScalePoint	Converts a point from global Revit coordinates to current IFC coordinates, including scale.
	TransformAndScaleVector	Converts a vector from global Revit coordinates to current IFC coordinates, including scale.
	UsesInstanceGeometry	Identifies if the family instance has its own geometry, or uses the symbol's geometry with a transform.
	ValidateCurveLoops

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This class contains special API utilities needed to enable the implementation of the client application for IFC export. Some of these utilities will be needed temporarily while the code for IFC export is migrated into the export client. These temporary interfaces are likely to change in upcoming Revit releases.

Reference