UKismetMathLibrary::Matrix_GetTransposed
#include "Kismet/KismetMathLibrary.h"
Access: public
Specifiers: staticBlueprintPure
Description
Returns the transpose of the matrix (rows and columns swapped). For a pure rotation matrix (orthonormal, no scale), the transpose equals the inverse.
Caveats & Gotchas
- • The transpose is only equal to the inverse for orthonormal rotation matrices (determinant = ±1, no scale, no shear). If the matrix has any scale, using the transpose as an inverse will produce wrong results.
- • Transposing is frequently used to convert between row-major and column-major matrix conventions when interfacing with OpenGL or shader constants that expect column vectors.
Signature
static UE_INL_API FMatrix Matrix_GetTransposed(const FMatrix& M)Parameters
| Name | Type | Description | Default |
|---|---|---|---|
| M | const FMatrix& | The matrix to transpose. | — |
Return Type
FMatrix Example
Invert a pure rotation matrix cheaply via transpose C++
// Only valid when M is a pure rotation (determinant == 1, no scale)
FMatrix InverseRotation = UKismetMathLibrary::Matrix_GetTransposed(RotationOnlyMatrix);Version History
Introduced in: 4.0
| Version | Status | Notes |
|---|---|---|
| 5.6 | stable | — |
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