IFC 4.3.2.20251031 (IFC4X3_ADD2) under development

4.2.2.1.1 Arc Segment

下图展示了应用此概念时使用的通用类和关系。

G <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCurveSegment.htm'>IfcCurveSegment</a> 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] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCircle.htm'>IfcCircle</a> IfcCircle      LayerAssignment [0:1]      StyledByItem [0:1] 1. Position [1:1] 2. Radius [1:1] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCurveSegment.htm'>IfcCurveSegment</a>:ParentCurve1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCircle.htm'>IfcCircle</a>:IfcCircle0 IfcLengthMeasure_0 IfcLengthMeasure <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCurveSegment.htm'>IfcCurveSegment</a>:SegmentStart1->IfcLengthMeasure_0:IfcLengthMeasure0 IfcLengthMeasure_1 IfcLengthMeasure <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCurveSegment.htm'>IfcCurveSegment</a>:SegmentLength1->IfcLengthMeasure_1:IfcLengthMeasure0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcPositiveLengthMeasure.htm'>IfcPositiveLengthMeasure</a> IfcPositiveLengthMeasure <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCircle.htm'>IfcCircle</a>:Radius1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcPositiveLengthMeasure.htm'>IfcPositiveLengthMeasure</a>:IfcPositiveLengthMeasure0
Figure 4.2.2.1.1.A

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