IFC 4.3.0.1 (IFC4X3) development

4.7.1.2.7 Linear Segment

The following diagram shows the generic classes and relationships used when applying this concept.

G IfcCurveSegment IfcCurveSegment      LayerAssignment [0:1]      StyledByItem [0:1] 1. Transition [1:1]      UsingCurves [1:?] 2. Placement [1:1] 3. SegmentStart [1:1] 4. SegmentLength [1:1] 5. ParentCurve [1:1] IfcPolyline IfcPolyline      LayerAssignment [0:1]      StyledByItem [0:1] 1. Points [2:?] IfcCurveSegment:ParentCurve1->IfcPolyline:IfcPolyline0 IfcLine IfcLine      LayerAssignment [0:1]      StyledByItem [0:1] 1. Pnt [1:1] 2. Dir [1:1] IfcCurveSegment:ParentCurve1->IfcLine:IfcLine0 IfcParameterValue_0 IfcParameterValue IfcCurveSegment:SegmentStart1->IfcParameterValue_0:IfcParameterValue0 IfcParameterValue_1 IfcParameterValue IfcCurveSegment:SegmentLength1->IfcParameterValue_1:IfcParameterValue0
Figure 4.7.1.2.7.A

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