Class Ifc4::IfcFeatureElementAddition

Nested Relationships

This class is a nested type of Struct Ifc4.

Inheritance Relationships

Base Type

Derived Type

Class Documentation

class Ifc4::IfcFeatureElementAddition : public Ifc4::IfcFeatureElement

Definition from IAI: A specialization of the general feature element, that represents an existence dependent element which modifies the shape and appearance of the associated master element. The IfcFeatureElementAddition offers the ability to handle shape modifiers as semantic objects within the IFC object model that add to the shape of the master element.

HISTORY New entity in Release IFC2x Edition 2. NOTE The entity is introduced as an upward compatible extension of the IFC2x platform. It is an intermediate abstract supertype without defining its own explicit attributes.

The IfcFeatureElementAddition is associated to its master element by virtue of the objectified relationship IfcRelProjectsElement. This relationship implies a Boolean ‘union’ operation between the shape of the master element and the shape of the addition feature.

Containment use definition

The containment to the spatial structure is defined at the level of the supertype IfcFeatureElement

Geometry Use Definitions

The geometric representation of IfcFeatureElementAddition is given by the IfcProductDefinitionShape, allowing multiple geometric representations.

Local Placement

The local placement for IfcFeatureElementAddition is defined in its supertype IfcProduct. It is defined by the IfcLocalPlacement, which defines the local coordinate system that is referenced by all geometric representations. The local placement is always defined in relation to the local placement of the element to which the feature element is added:

The PlacementRelTo relationship of IfcLocalPlacement shall point to the local placement of the same IfcElement, which is used in the HasAdditionFeature.RelatingElement inverse attribute.

Shape Representation

The geometry use definitions for the shape representation of the IfcFeatureElementAddition is given at the level of its subtypes.

Subclassed by Ifc4::IfcProjectionElement

Public Types

typedef IfcTemplatedEntityList<IfcFeatureElementAddition> list

Public Functions

IfcTemplatedEntityList<IfcRelProjectsElement>::ptr ProjectsElements() const
const IfcParse::entity &declaration() const
IfcFeatureElementAddition(IfcEntityInstanceData *e)
IfcFeatureElementAddition(std::string v1_GlobalId, ::Ifc4::IfcOwnerHistory *v2_OwnerHistory, boost::optional<std::string> v3_Name, boost::optional<std::string> v4_Description, boost::optional<std::string> v5_ObjectType, ::Ifc4::IfcObjectPlacement *v6_ObjectPlacement, ::Ifc4::IfcProductRepresentation *v7_Representation, boost::optional<std::string> v8_Tag)

Public Static Functions

const IfcParse::entity &Class()