IfcPlanarBox

Natural language names
Umgrenzungsfläche
Planar Box
Boite planaire
Change log
ItemSPFXMLChangeDescription
IFC2x3 to IFC4 4.0.0.0
    IfcPlanarBoxMOVEDSchema 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
#AttributeTypeCardinalityDescription G
3PlacementIfcAxis2Placement 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 IfcPlanarExtent IfcGeometricRepresentationItem IfcRepresentationItem
Attribute inheritance
#AttributeTypeCardinalityDescriptionG
IfcRepresentationItem
LayerAssignmentIfcPresentationLayerAssignment
@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
StyledByItemIfcStyledItem
@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
IfcPlanarExtent
1SizeInXIfcLengthMeasure The extent in the direction of the x-axis. X
2SizeInYIfcLengthMeasure The extent in the direction of the y-axis. X
IfcPlanarBox
3PlacementIfcAxis2Placement 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
XML 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;

Link to EXPRESS-G diagram EXPRESS-G diagram

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