ExporterIFCUtils

Public Class

A class that contains utilities needed to implement Revit’s version of the IFC export client application.

Inheritance Hierarchy

System.Object
Autodesk.Revit.DB.IFC.ExporterIFCUtils

Assembly: RevitAPIIFC (in RevitAPIIFC.dll) Version: 25.0.0.0 (25.0.0.0)

Syntax

public static class ExporterIFCUtils

The ExporterIFCUtils type exposes the following members.

Methods

Name

Description

Public Method
Static Member

AddClippingsToBaseExtrusion

Public Method
Static Member

AddValueString

Adds a string value to a built-in parameter.

Public Method
Static Member

AreSolidsEqual

Determines whether two solids are identical, potentially offset from each other.

Public Method
Static Member

CanExportWallGeometryAsExtrusion

Identifies if the base geometry of the wall can be represented as an extrusion.

Public Method
Static Member
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.

Public Method
Static Member
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.

Public Method
Static Member

ComputeAreaOfCurveLoops

Public Method
Static Member

ComputeRoofProjectedArea

Returns the projected area of the room, unscaled.

Public Method
Static Member

ComputeSubcomponents

Splits a roof or floor element composed of planar surfaces into a set of roughly vertical extruded loops of uniform depth if possible.

Public Method
Static Member

CreateAlternateGUID

Creates a GUID for the given element.

Public Method
Static Member

CreateGUID

Creates a randomized GUID.

Public Method
Static Member

CreateProjectLevelGUID

Creates a GUID from Revit project for given GUIDType.

Public Method
Static Member

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.

Public Method
Static Member

EndExportInternal

Use the internal Revit implementation to relate elements at the end of export.

Public Method
Static Member

ExportExtrudedSlabOpenings

Public Method
Static Member

ExportSlabAsExtrusion

Public Method
Static Member

GetAttachedColumns

Obtains a list of columns known to Revit as intersecting with this wall.

Public Method
Static Member

GetConnectedWalls

Obtains the IFC-specific information regarding the connections between this wall and other elements.

Public Method
Static Member

GetDoor2DArcsFromFamily

Gets the arcs associated with the plan view of a door.

Public Method
Static Member

GetElevationProfile

Obtains the curve loops which bound the wall’s elevation profile.

Public Method
Static Member

GetGeometryFromInplaceWall

Obtains a special snapshot of the geometry of an in-place wall element suitable for export.

Public Method
Static Member

GetGlobal2DDirectionHandles

Obtains the handles representing the cardinal directions in 2D.

Public Method
Static Member

GetGlobal2DOriginHandle

Obtains the handle representing the 2D origin.

Public Method
Static Member

GetGlobal3DDirectionHandles

Obtains the handles representing the cardinal directions in 3D.

Public Method
Static Member

GetGlobal3DOriginHandle

Obtains the handle representing the 3D origin.

Public Method
Static Member
GetIFCClassName

Obsolete.
Obtains the IFC class name associated to the given element for the current export.

Public Method
Static Member
GetIFCClassNameByCategory

Obsolete.
Obtains the IFC class name associated to a given category id for the current export.

Public Method
Static Member
GetIFCType

Obsolete.
Obtains the IFC type associated to the given element for the current export.

Public Method
Static Member

GetInstanceCutoutFromWall

Gets the curve loop corresponding to the hole in the wall made by the instance.

Public Method
Static Member

GetLegacyCurtainSubElements

Gets the sub elements from a legacy curtain element.

Public Method
Static Member

GetLegacyStairOrRampComponents

Gets the components of a stair or ramp.

Public Method
Static Member

GetLegacyStairsProperties

Returns one or more properties for legacy (created in R2012 or before) Stairs.

Public Method
Static Member

GetLevelIdByHeight

Gets the level if by the height of the element.

Public Method
Static Member
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.

Public Method
Static Member

GetMinSymbolHeight

Obtains the minimum height of the given FamilySymbol.

Public Method
Static Member

GetMinSymbolWidth

Obtains the minimum width of the given FamilySymbol.

Public Method
Static Member

GetNumBuildingStoreys

Returns the number of non-empty, non-duplicate building stories in the file.

Public Method
Static Member

GetOpeningData

Gets the openings data from the element.

Public Method
Static Member

GetOriginalSymbol

Returns the original family symbol of this family instance, before the instance is modified by joins, cuts, coping, extensions, or other post-processing.

Public Method
Static Member

GetRelativeLocalPlacementOffsetTransform

Obtains the relative transform between two IfcLocalPlacement handles.

Public Method
Static Member

GetRoofComponents

Gets the components of roof slabs.

Public Method
Static Member

GetRoomBoundaryAsCurveLoopArray

Obtains the spatial element boundary curves as an array of CurveLoops, needed for processing into IFC-specific elements later.

Public Method
Static Member

GetTransformForDoorOrWindow

Obtains the transform for the door or window instance.

Public Method
Static Member

GetUnscaledTransform

Obtains the unscaled transform from an IfcLocalPlacement handle.

Public Method
Static Member

GetUnscaledTransformWithoutFixOfDirection

Obtains the unscaled transform from an IfcLocalPlacement handle without fix of direction.

Public Method
Static Member

GetWallBaseOffset

Obtains the base offset of the wall.

Public Method
Static Member

GetWallTrimmedCurve

Obtains the curve of the wall trimmed or extended according to the end conditions of the wall.

Public Method
Static Member

HasElevationProfile

Identifies if the wall has a sketched elevation profile.

Public Method
Static Member

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.

Public Method
Static Member
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.

Public Method
Static Member

IsWallBaseRectangular

Identifies if the wall’s base can be represented by a direct thickening of the wall’s base curve.

Public Method
Static Member

IsWallCompletelyClipped

Determines if the input wall is completely removed by interaction with other elements within the given range.

Public Method
Static Member

IsWallJoinedToTop

Checks if wall is joined to top.

Public Method
Static Member

SetGlobal2DDirectionHandles

Sets the handles representing the cardinal directions in 2D.

Public Method
Static Member

SetGlobal2DOriginHandle

Sets the handle representing the 2D origin.

Public Method
Static Member

SetGlobal3DDirectionHandles

Sets the handles representing the cardinal directions in 3D.

Public Method
Static Member

SetGlobal3DOriginHandle

Sets the handle representing the 3D origin.

Public Method
Static Member

SortCurveLoops

Public Method
Static Member

TransformAndScalePoint

Converts a point from global Revit coordinates to current IFC coordinates, including scale.

Public Method
Static Member

TransformAndScaleVector

Converts a vector from global Revit coordinates to current IFC coordinates, including scale.

Public Method
Static Member
UsesInstanceGeometry

Identifies if the family instance has its own geometry, or uses the symbol’s geometry with a transform.

Public Method
Static Member

ValidateCurveLoops

Remarks

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.