Agreement on the valid value range for the angle in revolved area solids.
Based on IFC2x3
Initiator Official buildinSMART IFC2x3 CV2.0 certification programme
Effects Coordination View 2.0
Date 2010 09
For the Angle attribute of IfcRevolvedAreaSolid the agreements are made:
* the value range of Angle is 0 (exclusive) .. 360 (inclusive) if the unit type is 'degree', or 0π (exclusive) .. 2π (inclusive) if the unit type is RADIAN.
* therefore all values have to be positive