UKismetMathLibrary::GetSlopeDegreeAngles
#include "Kismet/KismetMathLibrary.h"
Access: public
Specifiers: staticUFUNCTIONBlueprintPure
Description
Decomposes a floor normal into separate pitch and roll angles, relative to an actor's right vector and a reference up vector. Used to lean or tilt a character or object to match sloped ground.
Caveats & Gotchas
- • MyRightYAxis, FloorNormal, and UpVector must all be unit (normalized) vectors — passing non-normalized input silently produces incorrect angles rather than an error.
- • The output is split into pitch and roll rather than a single slope angle, so it only makes sense in a context where the actor has a well-defined right axis (e.g. a character capsule), not for arbitrary objects.
- • This has no return value; both outputs must be read via the reference parameters, which in Blueprint appear as separate output pins.
Signature
static void GetSlopeDegreeAngles(const FVector& MyRightYAxis, const FVector& FloorNormal, const FVector& UpVector, float& OutSlopePitchDegreeAngle, float& OutSlopeRollDegreeAngle)Parameters
| Name | Type | Description | Default |
|---|---|---|---|
| MyRightYAxis | const FVector& | Right (Y) direction unit vector of the actor standing on the slope. | — |
| FloorNormal | const FVector& | Unit normal vector of the floor surface. | — |
| UpVector | const FVector& | Up vector of the reference frame (typically world up). | — |
| OutSlopePitchDegreeAngle | float& | Receives the slope's pitch angle in degrees. | — |
| OutSlopeRollDegreeAngle | float& | Receives the slope's roll angle in degrees. | — |
Return Type
void Example
Tilt a character mesh to match ground slope C++
FVector RightAxis = GetActorRightVector();
FVector FloorNormal = HitResult.ImpactNormal;
float Pitch, Roll;
UKismetMathLibrary::GetSlopeDegreeAngles(RightAxis, FloorNormal, FVector::UpVector, Pitch, Roll);
GetMesh()->SetRelativeRotation(FRotator(Pitch, 0.f, Roll));Version History
Introduced in: unknown
| Version | Status | Notes |
|---|---|---|
| 5.6 | stable | — |
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