IFC 4.4.0.0 build 20261005 (IFC4X4_DEV_20260525) ⚠ buildingSMART Working Draft. All content is under development.

8.9.6.4 IfcBuildAxes

8.9.6.4.1 Semantic definition

{ .extDef}

8.9.6.4.2 Formal representation

FUNCTION IfcBuildAxes
(Axis, RefDirection : IfcDirection)
: LIST [3:3] OF IfcDirection;
LOCAL
D1, D2 : IfcDirection;
END_LOCAL;
D1 := NVL(IfcNormalise(Axis), IfcRepresentationItem() || IfcGeometricRepresentationItem () || IfcDirection([0.0,0.0,1.0]));
D2 := IfcFirstProjAxis(D1, RefDirection);
RETURN ([D2, IfcNormalise(IfcCrossProduct(D1,D2))\IfcVector.Orientation, D1]);
END_FUNCTION;

8.9.6.4.3 References

IfcAxis2Placement3D

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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