UKismetMathLibrary::FTruncVector

function Engine Blueprint Since 4.0

#include "Kismet/KismetMathLibrary.h"

Access: public Specifiers: staticUFUNCTIONBlueprintPure

Description

Truncates each component of a float vector toward zero, returning an integer vector. For example, -1.7 becomes -1 and 2.8 becomes 2.

Caveats & Gotchas

• Truncation is toward zero, not toward negative infinity — this is different from floor behaviour for negative values (-1.7 truncates to -1, not -2). Use FFloor if you need floor semantics.
• The result is an FIntVector (32-bit signed integers). Input vectors with components outside the int32 range will overflow silently.

Signature

static UE_INL_API FIntVector FTruncVector(const FVector& InVector);

Parameters

Name	Type	Description	Default
InVector	const FVector&	The floating-point vector to truncate.	—

Return Type

FIntVector

Example

Convert a world position to a grid cell coordinate C++

FVector WorldPos = GetActorLocation();
FIntVector GridCell = UKismetMathLibrary::FTruncVector(WorldPos / GridCellSize);
// GridCell.X, GridCell.Y, GridCell.Z are the integer grid indices

Version History

Introduced in: 4.0

Version	Status	Notes
5.6	stable	—

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