IfcPlanarBox

Item	SPF	XML	Change	Description
IFC2x3 to IFC4
IfcPlanarBox			MOVED	Schema changed from IFCPRESENTATIONRESOURCE to IFCPRESENTATIONDEFINITIONRESOURCE.

Semantic definitions at the entity

Entity definition

A planar box specifies an arbitrary rectangular box and its location in a two dimensional Cartesian coordinate system. If the planar box is used within a three-dimensional coordinate system, it defines the rectangular box within the XY plane.

NOTE Entity adapted from planar_box defined in ISO10303-46

HISTORY New entity in IFC2x2.

Attribute definitions

#	Attribute	Type	Cardinality	Description	C
3	Placement	IfcAxis2Placement	[1:1]	The IfcAxis2Placement positions a local coordinate system for the definition of the rectangle. The origin of this local coordinate system serves as the lower left corner of the rectangular box. NOTE In case of a 3D placement by IfcAxisPlacement3D the IfcPlanarBox is defined within the xy plane of the definition coordinate system.	X

Inherited definitions from supertypes

Entity inheritance

Attribute inheritance

#	Attribute	Type	Cardinality	Description	C
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.	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.	X
IfcGeometricRepresentationItem
IfcPlanarExtent
1	SizeInX	IfcLengthMeasure	[1:1]	The extent in the direction of the x-axis.	X
2	SizeInY	IfcLengthMeasure	[1:1]	The extent in the direction of the y-axis.	X
IfcPlanarBox
3	Placement	IfcAxis2Placement	[1:1]	The IfcAxis2Placement positions a local coordinate system for the definition of the rectangle. The origin of this local coordinate system serves as the lower left corner of the rectangular box. NOTE In case of a 3D placement by IfcAxisPlacement3D the IfcPlanarBox is defined within the xy plane of the definition coordinate system.	X

Formal representations

XSD Specification

 <xs:element name="IfcPlanarBox" type="ifc:IfcPlanarBox" substitutionGroup="ifc:IfcPlanarExtent" nillable="true"/>

 <xs:complexType name="IfcPlanarBox">

  <xs:complexContent>

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

    <xs:sequence>

     <xs:element name="Placement">

      <xs:complexType>

       <xs:group ref="ifc:IfcAxis2Placement"/>

      </xs:complexType>

     </xs:element>

    </xs:sequence>

   </xs:extension>

  </xs:complexContent>

 </xs:complexType>

EXPRESS Specification


ENTITY IfcPlanarBox

 SUBTYPE OF (IfcPlanarExtent);

  Placement : IfcAxis2Placement;

END_ENTITY;

 EXPRESS-G diagram

	Umgrenzungsfläche
	Planar Box
	Boite planaire