IfcLinearAxisWithInclination

Item	SPF	XML	Change	Description
IFC4x2 to IFC4x3_RC1
IfcLinearAxisWithInclination			ADDED

Semantic definitions at the entity

Entity definition

An IfcLinearAxisWithInclination is a linear geometric representation item, which is defined based on a 3D curve and additional geometric representation that defines the lateral inclination profile based on the curve. This lateral inclination profile does not change the shape of the curve, but may have effect when the curve is used for linear placement or creating other geometric representation items.

Attribute definitions

#	Attribute	Type	Cardinality	Description	G
1	Directrix	IfcCurve			X
2	Inclinating	IfcAxisLateralInclination		The lateral inclination profile for linear axis.	X

Inherited definitions from supertypes

Entity inheritance

Attribute inheritance

#	Attribute	Type	Cardinality	Description	G
IfcRepresentationItem
	LayerAssignment	IfcPresentationLayerAssignment @AssignedItems	S[0:1]	Assignment of the representation item to a single or multiple layer(s). The LayerAssignments can override a LayerAssignments of the IfcRepresentation it is used within the list of Items. IFC2x3 CHANGE The inverse attribute LayerAssignments has been added. IFC4 CHANGE The inverse attribute LayerAssignment has been restricted to max 1. Upward compatibility for file based exchange is guaranteed.	X
	StyledByItem	IfcStyledItem @Item	S[0:1]	Reference to the IfcStyledItem that provides presentation information to the representation, e.g. a curve style, including colour and thickness to a geometric curve. IFC2x3 CHANGE The inverse attribute StyledByItem has been added.	X
IfcGeometricRepresentationItem
IfcLinearAxisWithInclination
1	Directrix	IfcCurve			X
2	Inclinating	IfcAxisLateralInclination		The lateral inclination profile for linear axis.	X

Formal representations

XML Specification

 <xs:element name="IfcLinearAxisWithInclination" type="ifc:IfcLinearAxisWithInclination" substitutionGroup="ifc:IfcGeometricRepresentationItem" nillable="true"/>

 <xs:complexType name="IfcLinearAxisWithInclination">

  <xs:complexContent>

   <xs:extension base="ifc:IfcGeometricRepresentationItem">

    <xs:sequence>

     <xs:element name="Directrix" type="ifc:IfcCurve" nillable="true"/>

     <xs:element name="Inclinating" type="ifc:IfcAxisLateralInclination" nillable="true"/>

    </xs:sequence>

   </xs:extension>

  </xs:complexContent>

 </xs:complexType>

EXPRESS Specification


ENTITY IfcLinearAxisWithInclination

 SUBTYPE OF (IfcGeometricRepresentationItem);

  Directrix : IfcCurve;

  Inclinating : IfcAxisLateralInclination;

END_ENTITY;

 EXPRESS-G diagram