Figure 8 — Bloss Transition Segment
The Bloss transition segment is a special case of a fifht order spiral where the curvature rate of change is a cubic function and the terms are dependent on the length L measured from the inflection point. The parameter value is defined as the deflection i.e. bearing angle &Theta.
Only the cubic and quadratic terms are populated with the following values: QubicTerm = L/³√2 QuadraticTerm = L/√3
Figure 8 illustrates an instance diagram.
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Figure 8 — Bloss Transition Segment |
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<Rules>
<AttributeRule AttributeName="ParentCurve">
<EntityRules>
<EntityRule EntityName="IfcThirdOrderPolynomialSpiral">
<AttributeRules>
<AttributeRule AttributeName="QubicTerm">
<EntityRules>
<EntityRule EntityName="IfcLengthMeasure" />
</EntityRules>
</AttributeRule>
<AttributeRule AttributeName="QuadraticTerm">
<EntityRules>
<EntityRule EntityName="IfcLengthMeasure" />
</EntityRules>
</AttributeRule>
</AttributeRules>
</EntityRule>
</EntityRules>
</AttributeRule>
</Rules>
</ConceptTemplate>
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