UKismetMathLibrary::Matrix_GetInverse
#include "Kismet/KismetMathLibrary.h"
Access: public
Specifiers: staticBlueprintPure
Description
Returns the inverse of the matrix. The header notes it handles nil (singular) matrices. Multiplying M by its inverse should yield the identity matrix.
Caveats & Gotchas
- • If the matrix is singular (determinant near zero), the result is a zero matrix (or may be undefined) rather than throwing. Always check Matrix_GetDeterminant first if you're not sure the matrix is invertible.
- • For pure rotation matrices (no scale, no shear), Matrix_GetTransposed is equivalent to the inverse but significantly cheaper — prefer it when you know the matrix is orthonormal.
Signature
static UE_INL_API FMatrix Matrix_GetInverse(const FMatrix& M)Parameters
| Name | Type | Description | Default |
|---|---|---|---|
| M | const FMatrix& | The matrix to invert. | — |
Return Type
FMatrix Example
Build a world-to-local matrix from a local-to-world matrix C++
FMatrix LocalToWorld = Actor->GetActorTransform().ToMatrixWithScale();
FMatrix WorldToLocal = UKismetMathLibrary::Matrix_GetInverse(LocalToWorld);
// Convert a world-space point to local space
FVector4 LocalPoint = UKismetMathLibrary::Matrix_TransformPosition(WorldToLocal, WorldSpacePoint);See Also
Version History
Introduced in: 4.0
| Version | Status | Notes |
|---|---|---|
| 5.6 | stable | — |
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