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20252453-T-424 项目
Cover
Contents
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions, and abbreviated terms
4 Fundamental concepts and assumptions
5 Core data schemas
6 Shared element data schemas
7 Domain specific data schemas
8 Resource definition data schemas
A Computer interpretable listings
B Alphabetical listings
C Inheritance listings
D Diagrams
E Examples
F Change logs
Bibliography
Index
4.2.2.1.1 圆弧段(Arc Segment)
下图展示了应用此概念时使用的通用类和关系。
<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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