IFC 4.3.2.20240128 (IFC4X3_ADD2) under development

4.1.7.1.2.4 Single Survey Line

Geometry representation of a single survey line. It can be a 2D or a 3D line, therefore using IfcPolyline, or IfcIndexedPolyCurve, or IfcGradientCurve, or IfcCompositeCurve

The following diagram shows the generic classes and relationships used when applying this concept. In addition, concepts may have particular importance to common or standardised industry practices and scenarios. For these specific usage scenarios, the table below shows a recommended list of general usage patterns that users may adopt.

G IfcAnnotation IfcAnnotation 1. GlobalId [1:1] 2. OwnerHistory [0:1] 3. Name [0:1] 4. Description [0:1]      HasAssignments [0:?]      Nests [0:1]      IsNestedBy [0:?]      HasContext [0:1]      IsDecomposedBy [0:?]      Decomposes [0:1]      HasAssociations [0:?] 5. ObjectType [0:1]      IsDeclaredBy [0:1]      Declares [0:?]      IsTypedBy [0:1]      IsDefinedBy [0:?] 6. ObjectPlacement [0:1] 7. Representation [0:1]      ReferencedBy [0:?]      PositionedRelativeTo [0:?]      ReferencedInStructures [0:?] 8. PredefinedType [0:1]      ContainedInStructure [0:1] IfcProductDefinitionShape IfcProductDefinitionShape 1. Name [0:1] 2. Description [0:1] 3. Representations [1:?]      ShapeOfProduct [1:?]      HasShapeAspects [0:?] IfcAnnotation:Representation1->IfcProductDefinitionShape:IfcProductDefinitionShape0 constraint_2 =.SURVEY. IfcAnnotation:PredefinedType1->constraint_2:constraint0 IfcShapeRepresentation IfcShapeRepresentation 1. ContextOfItems [1:1] Identifier 2. RepresentationIdentifier [0:1] Type 3. RepresentationType [0:1] Items 4. Items [1:?]      RepresentationMap [0:1]      LayerAssignments [0:?]      OfProductRepresentation [0:?]      OfShapeAspect [0:1] IfcProductDefinitionShape:Representations1->IfcShapeRepresentation:IfcShapeRepresentation0 IfcGeometricRepresentationContext IfcGeometricRepresentationContext 1. ContextIdentifier [0:1] 2. ContextType [0:1]      RepresentationsInContext [0:?] 3. CoordinateSpaceDimension [1:1] 4. Precision [0:1] 5. WorldCoordinateSystem [1:1] 6. TrueNorth [0:1]      HasSubContexts [0:?]      HasCoordinateOperation [0:1] IfcShapeRepresentation:ContextOfItems1->IfcGeometricRepresentationContext:IfcGeometricRepresentationContext0 IfcLabel_0 IfcLabel IfcShapeRepresentation:RepresentationIdentifier1->IfcLabel_0:IfcLabel0 IfcLabel_1 IfcLabel IfcShapeRepresentation:RepresentationType1->IfcLabel_1:IfcLabel0 IfcPolyline IfcPolyline      LayerAssignment [0:1]      StyledByItem [0:1] 1. Points [2:?] IfcShapeRepresentation:Items1->IfcPolyline:IfcPolyline0 IfcIndexedPolyCurve IfcIndexedPolyCurve      LayerAssignment [0:1]      StyledByItem [0:1] 1. Points [1:1] 2. Segments [1:?] 3. SelfIntersect [0:1] IfcShapeRepresentation:Items1->IfcIndexedPolyCurve:IfcIndexedPolyCurve0 IfcGradientCurve IfcGradientCurve      LayerAssignment [0:1]      StyledByItem [0:1] 1. Segments [1:?] 2. SelfIntersect [1:1] 3. BaseCurve [1:1] 4. EndPoint [0:1] IfcShapeRepresentation:Items1->IfcGradientCurve:IfcGradientCurve0 IfcCompositeCurve IfcCompositeCurve      LayerAssignment [0:1]      StyledByItem [0:1] 1. Segments [1:?] 2. SelfIntersect [1:1] IfcShapeRepresentation:Items1->IfcCompositeCurve:IfcCompositeCurve0 constraint_0 ='Annotation' IfcLabel_0->constraint_0 constraint_1 ='Curve' IfcLabel_1->constraint_1
Figure 4.1.7.1.2.4.A

General Usage

ApplicableEntity
IfcAnnotation
Table 4.1.7.1.2.4.B

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