UKismetMathLibrary::Matrix_TransformPosition

function Engine Blueprint Since 4.0

#include "Kismet/KismetMathLibrary.h"

Access: public Specifiers: staticBlueprintPure

Description

Transforms a 3D position vector by the matrix, including the translation component. Returns an FVector4 (homogeneous result). Equivalent to multiplying FVector4(V, 1) by the matrix.

Caveats & Gotchas

• The return type is FVector4, not FVector. If you need a 3D position back, extract XYZ from the result (W should be 1 for a non-projective transform matrix, but check it).
• Unlike Matrix_TransformVector, this includes translation — use it for points in space, not for direction vectors (where translation should be ignored).

Signature

static UE_INL_API FVector4 Matrix_TransformPosition(const FMatrix& M, FVector V)

Parameters

Name	Type	Description	Default
M	const FMatrix&	The transform matrix to apply.	—
V	FVector	The 3D position to transform. Internally treated as a homogeneous point (W=1).	—

Return Type

FVector4

Example

Transform a world position by a local-to-world matrix C++

FVector LocalPoint(100.f, 0.f, 50.f);
FVector4 WorldPoint4 = UKismetMathLibrary::Matrix_TransformPosition(LocalToWorldMatrix, LocalPoint);
FVector WorldPoint(WorldPoint4.X, WorldPoint4.Y, WorldPoint4.Z);

Version History

Introduced in: 4.0

Version	Status	Notes
5.6	stable	—

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