IFC 4.3.0.1 (IFC4X3) development

4.7.7.3.1.3 Ellipse Profile Definition

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

G IfcEllipseProfileDef IfcEllipseProfileDef 1. ProfileType [1:1] 2. ProfileName [0:1]      HasExternalReference [0:?]      HasProperties [0:?] 3. Position [0:1] 4. SemiAxis1 [1:1] 5. SemiAxis2 [1:1] IfcProfileTypeEnum IfcProfileTypeEnum IfcEllipseProfileDef:ProfileType1->IfcProfileTypeEnum:IfcProfileTypeEnum0 IfcLabel IfcLabel IfcEllipseProfileDef:ProfileName1->IfcLabel:IfcLabel0 IfcAxis2Placement2D IfcAxis2Placement2D      LayerAssignment [0:1]      StyledByItem [0:1] 1. Location [1:1] 2. RefDirection [0:1] IfcEllipseProfileDef:Position1->IfcAxis2Placement2D:IfcAxis2Placement2D0 IfcPositiveLengthMeasure_0 IfcPositiveLengthMeasure IfcEllipseProfileDef:SemiAxis11->IfcPositiveLengthMeasure_0:IfcPositiveLengthMeasure0 IfcPositiveLengthMeasure_1 IfcPositiveLengthMeasure IfcEllipseProfileDef:SemiAxis21->IfcPositiveLengthMeasure_1:IfcPositiveLengthMeasure0 IfcCartesianPoint IfcCartesianPoint      LayerAssignment [0:1]      StyledByItem [0:1] 1. Coordinates [1:3] IfcAxis2Placement2D:Location1->IfcCartesianPoint:IfcCartesianPoint0 IfcDirection IfcDirection      LayerAssignment [0:1]      StyledByItem [0:1] 1. DirectionRatios [2:3] IfcAxis2Placement2D:RefDirection1->IfcDirection:IfcDirection0
Figure 4.7.7.3.1.3.A

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