UKismetMathLibrary::Hypotenuse

function Engine Blueprint Since 4.0

#include "Kismet/KismetMathLibrary.h"

Access: public Specifiers: staticUFUNCTIONBlueprintPure

Description

Returns the length of the hypotenuse of a right-angled triangle given its two legs (sqrt(Width^2 + Height^2)). Useful for computing 2D distances without constructing a vector.

Caveats & Gotchas

• This computes a 2D distance only — for 3D Euclidean distance use FVector::Dist or UKismetMathLibrary::VSize instead.
• Internally uses FMath::Sqrt(Width*Width + Height*Height); for very large inputs the intermediate squaring can overflow to infinity before the sqrt, producing incorrect results. FMath::Hypot (if available) uses a numerically stable algorithm — prefer that in precision-critical code.

Signature

static ENGINE_API double Hypotenuse(double Width, double Height);

Parameters

Name	Type	Description	Default
Width	double	The horizontal leg of the right triangle.	—
Height	double	The vertical leg of the right triangle.	—

Return Type

double

Example

Compute 2D screen distance between two UI elements C++

FVector2D PosA(100.0f, 200.0f);
FVector2D PosB(400.0f, 600.0f);
double Dist = UKismetMathLibrary::Hypotenuse(PosB.X - PosA.X, PosB.Y - PosA.Y);
// Dist == 500.0

Version History

Introduced in: 4.0

Version	Status	Notes
5.6	stable	—

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