UKismetMathLibrary::Vector2DInterpTo

function Engine Blueprint Since 4.0

#include "Kismet/KismetMathLibrary.h"

Access: public Specifiers: staticBlueprintPure

Description

Smoothly moves a 2D position toward a target using exponential interpolation. Produces a spring-like ease-out that slows as it approaches the target.

Caveats & Gotchas

• The interpolation is frame-rate dependent in that it uses DeltaTime directly. Unlike FMath::Lerp, passing a large DeltaTime can overshoot the target; the function internally clamps to prevent this.
• Setting InterpSpeed to 0 causes an immediate snap to Target regardless of DeltaTime.

Signature

static UE_INL_API FVector2D Vector2DInterpTo(FVector2D Current, FVector2D Target, float DeltaTime, float InterpSpeed);

Parameters

Name	Type	Description	Default
Current	FVector2D	Current position.	—
Target	FVector2D	Target position to move toward.	—
DeltaTime	float	Time elapsed since the last frame.	—
InterpSpeed	float	Interpolation speed; 0 snaps instantly to the target.	—

Return Type

FVector2D

Example

Smoothly follow a UI cursor toward mouse position C++

// In Tick or TickComponent
CursorPosition = UKismetMathLibrary::Vector2DInterpTo(
    CursorPosition,
    TargetMousePosition,
    DeltaTime,
    8.f
);

Version History

Introduced in: 4.0

Version	Status	Notes
5.6	stable	—

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