UKismetMathLibrary::FTruncVector2D

function Engine Blueprint Since 5.0

#include "Kismet/KismetMathLibrary.h"

Access: public Specifiers: staticUFUNCTIONBlueprintPure

Description

Truncates each component of a 2D float vector toward zero, returning an integer 2D vector. Mirrors FTruncVector for the 2D case.

Caveats & Gotchas

• Returns FIntVector2, which was added in UE 5.0. Code targeting UE 4.x cannot use this function; use manual casting instead.
• Like FTruncVector, truncation is toward zero — -1.7 becomes -1, not -2. This can cause unexpected off-by-one errors when mapping negative screen or tile coordinates to grid indices.

Signature

static UE_INL_API FIntVector2 FTruncVector2D(const FVector2D& InVector2D);

Parameters

Name	Type	Description	Default
InVector2D	const FVector2D&	The 2D floating-point vector to truncate.	—

Return Type

FIntVector2

Example

Convert a 2D UI position to a tile index C++

FVector2D CursorPos = GetCursorPosition(); // e.g. (145.7f, -32.3f)
FIntVector2 TileIndex = UKismetMathLibrary::FTruncVector2D(CursorPos / TileSize);
// TileIndex.X == 145/TileSize, TileIndex.Y == -32/TileSize (truncated toward zero)

Version History

Introduced in: 5.0

Version	Status	Notes
5.6	stable	—

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