UKismetMathLibrary::NotEqual_MatrixMatrix
#include "Kismet/KismetMathLibrary.h"
Access: public
Specifiers: staticBlueprintPure
Description
Returns true if any element of matrix A differs from the corresponding element of B by more than the given tolerance. The logical inverse of EqualEqual_MatrixMatrix.
Caveats & Gotchas
- • The function returns true as soon as any single element differs beyond tolerance — it does not indicate which elements differ or by how much.
- • Like EqualEqual_MatrixMatrix, this is a raw element comparison. Matrices that are semantically equivalent transforms (same orientation, same position) but differ only in scale will return true (not equal).
Signature
static UE_INL_API bool NotEqual_MatrixMatrix(const FMatrix& A, const FMatrix& B, float Tolerance = 1.e-4f)Parameters
| Name | Type | Description | Default |
|---|---|---|---|
| A | const FMatrix& | The first matrix to compare. | — |
| B | const FMatrix& | The second matrix to compare. | — |
| Tolerance | float | Per-element error tolerance for the comparison. | 1.e-4f |
Return Type
bool Example
Dirty-check a cached bone matrix before updating C++
if (UKismetMathLibrary::NotEqual_MatrixMatrix(NewBoneMatrix, CachedBoneMatrix))
{
CachedBoneMatrix = NewBoneMatrix;
UpdateSkinning();
}Version History
Introduced in: 4.0
| Version | Status | Notes |
|---|---|---|
| 5.6 | stable | — |
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