IFC 4.3.x development

8.8.3.33 IfcSectionedSolid

Change log

IFC4X1

added

8.8.3.33.1 Semantic definitions at the entity

An IfcSectionedSolid is an abstract base type for solids constructed by sweeping potentially variable cross sections along a directrix.

8.8.3.33.1 Attributes

# Attribute Type Description
IfcRepresentationItem
LayerAssignmentSET [0:1] OF IfcPresentationLayerAssignment FOR AssignedItemsAssignment 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.
StyledByItem SET [0:1] OF IfcStyledItem FOR Item 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.
IfcGeometricRepresentationItem
IfcSolidModel
Dim INVALID The space dimensionality of this class, it is always 3.
IfcSectionedSolid
1 Directrix IfcCurve The curve used to define the sweeping operation.
2 CrossSections LIST [2:?] OF IfcProfileDef List of cross sections in sequential order along the Directrix.

8.8.3.33.2 Entity inheritance

dot_inheritance IfcSectionedSolidHorizontal IfcSectionedSolidHorizontal IfcSectionedSolid IfcSectionedSolid IfcSectionedSolidHorizontal->IfcSectionedSolid IfcSolidModel IfcSolidModel IfcSectionedSolid->IfcSolidModel IfcSolidModel_children 4 more... IfcSolidModel_children->IfcSolidModel IfcGeometricRepresentationItem IfcGeometricRepresentationItem IfcSolidModel->IfcGeometricRepresentationItem IfcGeometricRepresentationItem_children 24 more... IfcGeometricRepresentationItem_children->IfcGeometricRepresentationItem IfcRepresentationItem IfcRepresentationItem IfcGeometricRepresentationItem->IfcRepresentationItem IfcRepresentationItem_children 3 more... IfcRepresentationItem_children->IfcRepresentationItem

8.8.3.33.3 Formal representations

ENTITY IfcSectionedSolid
 ABSTRACT SUPERTYPE OF (ONEOF
	(IfcSectionedSolidHorizontal))
 SUBTYPE OF (IfcSolidModel);
	Directrix : IfcCurve;
	CrossSections : LIST [2:?] OF IfcProfileDef;
 WHERE
	DirectrixIs3D : Directrix.Dim = 3;
	ConsistentProfileTypes : SIZEOF(QUERY(temp <* CrossSections | CrossSections[1].ProfileType <> temp.ProfileType)) = 0;
	SectionsSameType : SIZEOF(QUERY(temp <* CrossSections | TYPEOF(CrossSections[1]) :<>: TYPEOF(temp))) = 0;
END_ENTITY;