CFx SDK Documentation 2026 SP0
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OdIfc2x_final::IfcSlab Class Reference

#include <IfcSlabAutoImpl.h>

Inheritance diagram for OdIfc2x_final::IfcSlab:
OdIfc2x_final::IfcBuildingElement OdIfc2x_final::IfcElement OdIfc2x_final::IfcProduct OdIfc2x_final::IfcObject OdIfc2x_final::IfcRoot OdIfc2x_final::OdIfc2x_FinalInstance OdIfc::OdIfcInstance

Public Member Functions

IfcSlabTypeEnum getPredefinedType () const
 
void setPredefinedType (IfcSlabTypeEnum PredefinedType)
 
 IfcSlab ()
 
virtual OdResult inFields (OdDAI::OdSpfFilerBase *rdFiler) override
 
virtual OdResult outFields (OdDAI::OdSpfFilerBase *wrFiler) override
 
virtual OdDAI::Entity * getInstanceType () const override
 
virtual OdRxValue getAttr (const char *attrName) const override
 
virtual void unsetAttr (const char *explicitAttrName) override
 
virtual bool testAttr (const char *explicitAttrName) const override
 
virtual bool putAttr (const char *explicitAttrName, const OdRxValue &val) override
 
virtual bool isKindOf (OdIfc::OdIfcEntityType entityType) const override
 
virtual OdIfc::OdIfcEntityType type () const override
 
virtual OdRxValue getAttr (const OdIfc::OdIfcAttribute attrDef) const override
 
virtual void unsetAttr (const OdIfc::OdIfcAttribute explicitAttrDef) override
 
virtual bool testAttr (const OdIfc::OdIfcAttribute explicitAttrDef) const override
 
virtual bool putAttr (const OdIfc::OdIfcAttribute explicitAttrDef, const OdRxValue &val) override
 
- Public Member Functions inherited from OdIfc2x_final::IfcBuildingElement
void getInvProvidesBoundaries (OdDAIObjectIds &ProvidesBoundaries) const
 
void getInvHasOpenings (OdDAIObjectIds &HasOpenings) const
 
void getInvFillsVoids (OdDAIObjectIds &FillsVoids) const
 
- Public Member Functions inherited from OdIfc2x_final::IfcElement
const OdAnsiString & getTag () const
 
void setTag (const OdAnsiString &Tag)
 
void getInvConnectedTo (OdDAIObjectIds &ConnectedTo) const
 
void getInvConnectedFrom (OdDAIObjectIds &ConnectedFrom) const
 
void getInvContainedInStructure (OdDAIObjectIds &ContainedInStructure) const
 
 IfcElement ()
 
- Public Member Functions inherited from OdIfc2x_final::IfcProduct
const OdDAIObjectId & getObjectPlacement () const
 
void setObjectPlacement (const OdDAIObjectId &ObjectPlacement)
 
const OdDAIObjectId & getRepresentation () const
 
void setRepresentation (const OdDAIObjectId &Representation)
 
void getInvReferencedBy (OdDAIObjectIds &ReferencedBy) const
 
- Public Member Functions inherited from OdIfc2x_final::IfcObject
const OdAnsiString & getObjectType () const
 
void setObjectType (const OdAnsiString &ObjectType)
 
void getInvIsDefinedBy (OdDAIObjectIds &IsDefinedBy) const
 
void getInvHasAssociations (OdDAIObjectIds &HasAssociations) const
 
void getInvHasAssignments (OdDAIObjectIds &HasAssignments) const
 
void getInvDecomposes (OdDAIObjectIds &Decomposes) const
 
void getInvIsDecomposedBy (OdDAIObjectIds &IsDecomposedBy) const
 
 IfcObject ()
 
- Public Member Functions inherited from OdIfc2x_final::IfcRoot
OdDAI::CompressedGUID getGlobalId () const
 
void setGlobalId (OdDAI::CompressedGUID GlobalId)
 
const OdDAIObjectId & getOwnerHistory () const
 
void setOwnerHistory (const OdDAIObjectId &OwnerHistory)
 
const OdAnsiString & getName () const
 
void setName (const OdAnsiString &Name)
 
const OdAnsiString & getDescription () const
 
void setDescription (const OdAnsiString &Description)
 
 IfcRoot ()
 
- Public Member Functions inherited from OdIfc::OdIfcInstance
 ODRX_DECLARE_MEMBERS (OdIfcInstance)
 
 OdIfcInstance ()
 
 ~OdIfcInstance ()
 
bool isInstanceOf (OdIfcEntityType entityType) const
 
IfcOpResult resolved ()
 
void resolve (IfcOpResult resolved, void *resPtr)
 
void unresolve ()
 
virtual void setGsNode (OdGsCache *pGsNode)
 
virtual OdGsCachegsNode () const
 
virtual OdUInt32 subSetAttributes (OdGiDrawableTraits *traits) const
 
virtual bool subWorldDraw (OdGiWorldDraw *wd) const
 
virtual OdDbStub * ownerId () const
 

Protected Attributes

OdDAI::Enum m_PredefinedType
 
- Protected Attributes inherited from OdIfc2x_final::IfcElement
OdAnsiString m_Tag
 
- Protected Attributes inherited from OdIfc2x_final::IfcProduct
OdDAIObjectId m_ObjectPlacement
 
OdDAIObjectId m_Representation
 
- Protected Attributes inherited from OdIfc2x_final::IfcObject
OdAnsiString m_ObjectType
 
- Protected Attributes inherited from OdIfc2x_final::IfcRoot
OdDAI::CompressedGUID m_GlobalId
 
OdDAIObjectId m_OwnerHistory
 
OdAnsiString m_Name
 
OdAnsiString m_Description
 
- Protected Attributes inherited from OdIfc::OdIfcInstance
voidm_resPtr
 
IfcOpResult m_resolved
 

Additional Inherited Members

- Static Public Member Functions inherited from OdIfc::OdIfcInstance
static const OdGePoint3dasPoint3d (const OdIfcInstance *inst)
 
static const OdGePoint2dasPoint2d (const OdIfcInstance *inst)
 
static const OdGeVector3dasVector3d (const OdIfcInstance *inst)
 
static const OdGeVector2dasVector2d (const OdIfcInstance *inst)
 
static const OdGeMatrix2dasMatrix2d (const OdIfcInstance *inst)
 
static const OdGeMatrix3dasMatrix3d (const OdIfcInstance *inst)
 
static OdIfcCompoundPtr asCompound (OdSmartPtr< OdIfcInstance > inst)
 
static const OdCmEntityColorasRgbColor (const OdIfcInstance *inst)
 

Detailed Description

A slab is a component of the construction that can enclose a space vertically. The slab can provide the lower support (floor) or upper construction (roof slab) in any space in a building. Only the core or constructional part of this construction is considered to be a slab. The upper finish (flooring, roofing) and the lower finish (ceiling, suspended ceiling) are considered to be coverings. A special type of slab is the landing, described as a floor section to which one or more stair flights or ramp flights connect.

There are two main representations for slab occurrences: IfcSlab with IfcMaterialLayerSetUsage is used for all occurrences of slabs, that are prismatic and where the thickness parameter can be fully described by the IfcMaterialLayerSetUsage. These slabs are always represented geometrically by a 'SweptSolid' geometry (or by a 'Clipping' geometry based on 'SweptSolid'), if a 3D geometric representation is assigned IfcSlab without IfcMaterialLayerSetUsage is used for all other occurrences of slabs, particularly for slabs with changing thickness, or slabs with non planar surfaces, and slabs having only 'SweptSolid' or 'Brep' geometry, or if a more parametric representation is not intended

The image below illustrates a 'Clipping' geometric representation with definition of a roof slab using advanced geometric representation. The profile is extruded non-perpendicular and the slab body is clipped at the eave.

<IMAGE ifcslab_advanced-layout1>

For polygonal slabs, the following interpretation of dimension parameter applies: IfcArbitraryClosedProfileDef.OuterCurve: closed bounded curve interpreted as area (or foot print) of the slab.

The image below illustrates the slab body extrusion.

<IMAGE ifcslab_standard-layout1>

  • Element Decomposition - A slab can be decomposed into parts such as for structural framing and covering panels or topping. For efficiency, each part can reuse geometry using the mapped geometry concept. The image below illustrates how a timber construction slab decomposed into parts.

<IMAGE ifcslab-floor>

The image below illustrates section showing a slab made from precast hollow core panels.

<IMAGE ifcslab-aggregation>

This concept can be applied to the following resources: IfcBuildingElementPart - Parts for other elements IfcBeam - Precast hollow core planks or double tee beams in concrete construction, or joists and bearers in timber construction IfcCovering - Concrete or topping screeds IfcPlate - Used for metal decks at the base of slabs or sheathing

  • Element Voiding - The image below illustrates openings within an aggregated slab which are directly assigned to IfcSlab using IfcRelVoidsElement pointing to IfcOpeningElement and apply to all aggregated parts. If individual parts have cutting and other voiding features, then the decomposed parts have a separate voiding relationship IfcRelVoidsElement pointing to IfcVoidingFeature.

<IMAGE ifcslab_element_voiding>

<IMAGE ifcslab_materialusage-01>

It is illegal to assign an IfcMaterialLayerSetUsage to an IfcSlab. Only the subtype IfcSlabStandardCase supports this concept

  • Material Set - This concept can be applied to the following resources: LoadBearing Insulation
  • Object Typing - This concept can be applied to the following resources: IfcSlabType
  • Product Assignment - This concept can be applied to the following resources: IfcStructuralSurfaceMember - An idealized structural member corresponding to the slab IfcTask - A task for operating on the slab
  • Property Sets for Objects - Pset_ConcreteElementGeneral Pset_PrecastConcreteElementFabrication Pset_PrecastConcreteElementGeneral Pset_PrecastSlab Pset_ReinforcementBarPitchOfSlab Pset_SlabCommon Pset_TrackBase (only applies to BASESLAB) Pset_CessBetweenRails (only applies to TRACKSLAB) Pset_EmbeddedTrack (only applies to TRACKSLAB) Pset_SlabTypeTrackSlab (only applies to TRACKSLAB)
  • Quantity Sets - This concept can be applied to the following resources: Qto_SlabBaseQuantities
  • Spatial Containment - The IfcSlab, as any subtype of IfcBuildingElement, can participate alternatively in one of the two different containment relationships: the Spatial Containment (defined here) the Element Composition
  • Surface Geometry - The 'Surface' can be used to define a surfacic model of the building (e.g. for analytical purposes, or for reduced Level of Detail representation).

Definition at line 150 of file Ifc2x_Final/IfcSlabAutoImpl.h.

Constructor & Destructor Documentation

◆ IfcSlab()

OdIfc2x_final::IfcSlab::IfcSlab ( )

Default constructor for the IfcSlab class.

Member Function Documentation

◆ getAttr() [1/2]

virtual OdRxValue OdIfc2x_final::IfcSlab::getAttr ( const char * attrName) const
overridevirtual

Returns an attribute value for the specified attribute name.

Parameters
attrName[in] Name of an attribute to query.
Returns
OdRxValue object that represents a generic variant type value.

Reimplemented from OdIfc2x_final::IfcBuildingElement.

◆ getAttr() [2/2]

virtual OdRxValue OdIfc2x_final::IfcSlab::getAttr ( const OdIfc::OdIfcAttribute attrDef) const
overridevirtual

Returns an attribute value for the specified attribute definition.

Parameters
attrDef[in] Attribute definition to query.
Returns
OdRxValue object that represents a generic variant type value.

Reimplemented from OdIfc2x_final::IfcBuildingElement.

◆ getInstanceType()

virtual OdDAI::Entity * OdIfc2x_final::IfcSlab::getInstanceType ( ) const
overridevirtual

Returns a type of a class instance.

Returns
Pointer to the <exref target=https://docs.opendesign.com/tkernel_api_cpp/OdDAI__Entity.html>>OdDAI::Entity</exref> type that determines an entity definition within a schema.

Reimplemented from OdIfc2x_final::IfcBuildingElement.

◆ getPredefinedType()

IfcSlabTypeEnum OdIfc2x_final::IfcSlab::getPredefinedType ( ) const

Returns the value of PredefinedType attribute. This attribute represents predefined generic type for a slab that is specified in an enumeration. There can be a property set specified specifically for the predefined types.

Returns
Returns the value of PredefinedType attribute.
Remarks
The PredefinedType is only used if no IfcSlabType is assigned, providing its own IfcSlabType.PredefinedType IFC2x CHANGE The attribute has been changed into an OPTIONAL attribute

◆ inFields()

virtual OdResult OdIfc2x_final::IfcSlab::inFields ( OdDAI::OdSpfFilerBase * rdFiler)
overridevirtual

Reads object's data from the specified filer.

Parameters
rdFiler[in] Pointer to a filer from which to read the data.
Returns
A value of OdResult type that contains the result of the method execution.

Reimplemented from OdIfc2x_final::IfcBuildingElement.

◆ isKindOf()

virtual bool OdIfc2x_final::IfcSlab::isKindOf ( OdIfc::OdIfcEntityType entityType) const
overridevirtual

Checks whether the specified instance is the object derived from or belongs to this class.

Parameters
entityType[in] Entity to check.
Returns
true if the specified instance is the object derived from or belongs to this class, false otherwise.

Reimplemented from OdIfc2x_final::IfcBuildingElement.

◆ outFields()

virtual OdResult OdIfc2x_final::IfcSlab::outFields ( OdDAI::OdSpfFilerBase * wrFiler)
overridevirtual

Writes object's data the the specified filer.

Parameters
wrFiler[in] Pointer to a filer to which to write the data.
Returns
A value of OdResult type that contains the result of the method execution.

Reimplemented from OdIfc2x_final::IfcBuildingElement.

◆ putAttr() [1/2]

virtual bool OdIfc2x_final::IfcSlab::putAttr ( const char * explicitAttrName,
const OdRxValue & val )
overridevirtual

Sets the specified attribute with a given value.

Parameters
explicitAttrName[in] Explicit name of the attribute to set.
val[in] Value to set.
Returns
true if the value is successfully set for the specified attribute, false otherwise.

Reimplemented from OdIfc2x_final::IfcBuildingElement.

◆ putAttr() [2/2]

virtual bool OdIfc2x_final::IfcSlab::putAttr ( const OdIfc::OdIfcAttribute explicitAttrDef,
const OdRxValue & val )
overridevirtual

Sets the specified attribute with a given value.

Parameters
explicitAttrDef[in] Explicit attribute definition to set.
val[in] Value to set.
Returns
true if the value is successfully set for the specified attribute, false otherwise.

Reimplemented from OdIfc2x_final::IfcBuildingElement.

◆ setPredefinedType()

void OdIfc2x_final::IfcSlab::setPredefinedType ( IfcSlabTypeEnum PredefinedType)

Sets the value of PredefinedType attribute. This attribute represents predefined generic type for a slab that is specified in an enumeration. There can be a property set specified specifically for the predefined types.

Parameters
PredefinedType[in] Predefined type to set.
Remarks
The PredefinedType is only used if no IfcSlabType is assigned, providing its own IfcSlabType.PredefinedType IFC2x CHANGE The attribute has been changed into an OPTIONAL attribute

◆ testAttr() [1/2]

virtual bool OdIfc2x_final::IfcSlab::testAttr ( const char * explicitAttrName) const
overridevirtual

Checks whether the specified attribute is set.

Parameters
explicitAttrName[in] Explicit name of the attribute to test.
Returns
true if the specified attribute is set, false otherwise.

Reimplemented from OdIfc2x_final::IfcBuildingElement.

◆ testAttr() [2/2]

virtual bool OdIfc2x_final::IfcSlab::testAttr ( const OdIfc::OdIfcAttribute explicitAttrDef) const
overridevirtual

Checks whether the specified attribute is set.

Parameters
explicitAttrDef[in] Attribute definition to test.
Returns
true if the specified attribute is set, false otherwise.

Reimplemented from OdIfc2x_final::IfcBuildingElement.

◆ type()

virtual OdIfc::OdIfcEntityType OdIfc2x_final::IfcSlab::type ( ) const
overridevirtual

Returns the type of this entity.

Returns
A value of the <exref target=https://docs.opendesign.com/tkernel_api_cpp/OdIfc__OdIfcEntityType.html>>OdIfc::OdIfcEntityType</exref> type that represents type of this entity.

Reimplemented from OdIfc2x_final::IfcBuildingElement.

◆ unsetAttr() [1/2]

virtual void OdIfc2x_final::IfcSlab::unsetAttr ( const char * explicitAttrName)
overridevirtual

Resets a value for the specified attribute.

Parameters
explicitAttrName[in] Explicit name of the attribute to reset.

Reimplemented from OdIfc2x_final::IfcBuildingElement.

◆ unsetAttr() [2/2]

virtual void OdIfc2x_final::IfcSlab::unsetAttr ( const OdIfc::OdIfcAttribute explicitAttrDef)
overridevirtual

Resets a value for the specified attribute.

Parameters
explicitAttrDef[in] Explicit definition that represents an attribute to reset.

Reimplemented from OdIfc2x_final::IfcBuildingElement.

Member Data Documentation

◆ m_PredefinedType

OdDAI::Enum OdIfc2x_final::IfcSlab::m_PredefinedType
protected

Definition at line 297 of file Ifc2x_Final/IfcSlabAutoImpl.h.


The documentation for this class was generated from the following file: