UKismetMathLibrary::NotEqual_Vector2DVector2D

function Engine Blueprint Since 4.0

#include "Kismet/KismetMathLibrary.h"

Access: public Specifiers: staticUFUNCTIONBlueprintPure

Description

Returns true if vector A is not approximately equal to vector B, within a per-component tolerance. The tolerance-aware inverse of EqualEqual_Vector2DVector2D.

Caveats & Gotchas

• The default tolerance of 1e-4 mirrors EqualEqual_Vector2DVector2D. If you're pairing calls, keep tolerances consistent to avoid asymmetric results.
• Returns true if either component differs by more than ErrorTolerance, not the Euclidean distance. A vector far on one axis but close on the other will still be 'not equal'.

Signature

static UE_INL_API bool NotEqual_Vector2DVector2D(FVector2D A, FVector2D B, float ErrorTolerance = 1.e-4f);

Parameters

Name	Type	Description	Default
A	FVector2D	The first vector.	—
B	FVector2D	The second vector.	—
ErrorTolerance	float	The maximum per-component difference for vectors to still be considered equal.	1.e-4f

Return Type

bool

Example

Branch on position change in a tick C++

if (UKismetMathLibrary::NotEqual_Vector2DVector2D(CurrentPos, LastPos, 0.5f))
{
    OnPositionChanged();
    LastPos = CurrentPos;
}

Version History

Introduced in: 4.0

Version	Status	Notes
5.6	stable	—

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