UE 5.1

Hi,

So I’m facing the eternal gimbal lock problem.

I have a camera pawn than user can control on pitch, yaw and roll and of course, the gimbal lock prevents the user to pass the limits for rotation on pitch and roll.

So I tried to use quaternions to solve that issue but my code does not seem to work.

```
void ACameraPawn::ControllerRotateYawAndPitch(const FInputActionValue& Value)
{
FVector2D LookAxisVector = Value.Get<FVector2D>();
if(Controller==nullptr) return;
UE_LOG(LogTemp,Warning,TEXT("PITCH INPUT RECEIVED, Y IS / %f, X IS / %f"), LookAxisVector.Y,LookAxisVector.X);
//The Add Controller Pitch Input does not pass 90 and -90 degres because of gimbal lock.
//AddControllerPitchInput(LookAxisVector.Y* BaseLookUpRate * GetWorld()->GetDeltaSeconds() * CustomTimeDilation);
FRotator CurrentRotator{LookAxisVector.Y,0,0};
FQuat NewQuatRotation=URotationHelpers::Euler_To_Quaternion(CurrentRotator);
URotationHelpers::AddActorLocalRotationQuat(this,NewQuatRotation);
}
```

And the static functions that are supposed to handle the quaternion conversion :

```
FQuat URotationHelpers::Euler_To_Quaternion(FRotator Current_Rotation)
{
FQuat q; // Declare output quaternion
float yaw = Current_Rotation.Yaw * PI / 180; // Convert degrees to radians
float roll = Current_Rotation.Roll * PI / 180;
float pitch = Current_Rotation.Pitch * PI / 180;
double cy = cos(yaw * 0.5);
double sy = sin(yaw * 0.5);
double cr = cos(roll * 0.5);
double sr = sin(roll * 0.5);
double cp = cos(pitch * 0.5);
double sp = sin(pitch * 0.5);
q.W = cy * cr * cp + sy * sr * sp;
q.X = cy * sr * cp - sy * cr * sp;
q.Y = cy * cr * sp + sy * sr * cp;
q.Z = sy * cr * cp - cy * sr * sp;
return q; // Return the quaternion of the input Euler rotation
}
void URotationHelpers::AddActorLocalRotationQuat(AActor* Actor, const FQuat& Delta_Rotation)
{
if (Actor)
{
Actor->AddActorLocalRotation (Delta_Rotation);
UE_LOG(LogTemp,Warning,TEXT("RotationHelpers is rotating the actor "));
}
}
```

Currently the code does not event make the pitch move even though the input values are well received and I have no clues as to why.

Thank you in advance.