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

8.9.6.10 IfcDotProduct

8.9.6.10.1 Semantic definition

{ .extDef}

8.9.6.10.2 Formal representation

FUNCTION IfcDotProduct
(Arg1, Arg2 : IfcDirection)
: REAL;
LOCAL
Scalar : REAL;
Vec1, Vec2 : IfcDirection;
Ndim : INTEGER;
END_LOCAL;
IF NOT EXISTS (Arg1) OR NOT EXISTS (Arg2) THEN
Scalar := ?;
ELSE
IF (Arg1.Dim <> Arg2.Dim) THEN
Scalar := ?;
ELSE
BEGIN
Vec1 := IfcNormalise(Arg1);
Vec2 := IfcNormalise(Arg2);
Ndim := Arg1.Dim;
Scalar := 0.0;
REPEAT i := 1 TO Ndim;
Scalar := Scalar + Vec1.DirectionRatios[i]*Vec2.DirectionRatios[i];
END_REPEAT;
END;
END_IF;
END_IF;
RETURN (Scalar);
END_FUNCTION;

8.9.6.10.3 References

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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