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> Unreal Engine API Reference > Runtime > Core > Math > FMatrix > FMatrix::InverseTransformVector

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FMatrix::InverseTransformVector

Transform a direction vector by the inverse of this matrix - will not take into account translation part.

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References

Module	Core
Header	/Engine/Source/Runtime/Core/Public/Math/Matrix.h
Include	#include "Math/Matrix.h"
Source	/Engine/Source/Runtime/Core/Public/Math/Matrix.inl

Syntax

FVector InverseTransformVector
(
const FVector & V
) const

Remarks

Transform a direction vector by the inverse of this matrix - will not take into account translation part. If you want to transform a surface normal (or plane) and correctly account for non-uniform scaling you should use TransformByUsingAdjointT with adjoint of matrix inverse.

Faster version of InverseTransformVector that assumes no scaling. WARNING: Will NOT work correctly if there is scaling in the matrix.

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