UKismetMathLibrary::GetTAU
#include "Kismet/KismetMathLibrary.h"
Access: public
Specifiers: staticUFUNCTIONBlueprintPure
Description
Returns τ (tau), the full-circle constant equal to 2π (~6.28318). Useful when working with full rotations in radians without having to write 2.0 * PI everywhere.
Caveats & Gotchas
- • Less universally recognised than π — when working with teammates unfamiliar with τ, using 2.0 * GetPI() with an explanatory comment may be more maintainable.
- • Like GetPI, prefer the compile-time constant UE_TWO_PI in performance-critical C++ code instead of calling a function.
Signature
static UE_INL_API double GetTAU();Return Type
double Example
Wrap an angle to [0, 2π) C++
double AngleRad = FMath::Fmod(SomeAngle, UKismetMathLibrary::GetTAU());
if (AngleRad < 0.0) AngleRad += UKismetMathLibrary::GetTAU();Tags
Version History
Introduced in: 4.0
| Version | Status | Notes |
|---|---|---|
| 5.6 | stable | — |
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