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8.9.6.23 IfcSecondProjAxis

8.9.6.23.1 Semantic definition

{ .extDef}

8.9.6.23.2 Formal representation

FUNCTION IfcSecondProjAxis
(ZAxis, XAxis, Arg: IfcDirection)
: IfcDirection;
LOCAL
YAxis : IfcVector;
V : IfcDirection;
Temp : IfcVector;
END_LOCAL;
IF NOT EXISTS(Arg) THEN
V := IfcRepresentationItem() || IfcGeometricRepresentationItem () || IfcDirection([0.0,1.0,0.0]);
ELSE
V := Arg;
END_IF;
Temp := IfcScalarTimesVector(IfcDotProduct(V, ZAxis), ZAxis);
YAxis := IfcVectorDifference(V, Temp);
Temp := IfcScalarTimesVector(IfcDotProduct(V, XAxis), XAxis);
YAxis := IfcVectorDifference(YAxis, Temp);
YAxis := IfcNormalise(YAxis);
RETURN(YAxis.Orientation);
END_FUNCTION;

8.9.6.23.3 References

IfcBaseAxis

Edit on Github

3 contributor(s):
Last change: Improve definition split (#876) * bring back headers headers were previously removed by mistake, now bringing them back * add new lines and rename the tag add the word 'short' in it * unify newlines make exactly one newline before and two after the tag * resolving typos Because bringing back headers required to go back in time to previous version, I'm now re-resolving the issues: #861, #860, #856 by ArturTomczak on 2024-07-16T16:07:28+02:00

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