UE5 USplineComponent

FTransform USplineComponent::GetTransformAtTime(float Time, ESplineCoordinateSpace::Type CoordinateSpace, bool bUseConstantVelocity, bool bUseScale) const
{
	if (Duration == 0.0f)
	{
		return FTransform::Identity;
	}

	if (bUseConstantVelocity)
	{
		return GetTransformAtDistanceAlongSpline(Time / Duration * GetSplineLength(), CoordinateSpace, bUseScale);
	}
	else
	{
		const int32 NumPoints = SplineCurves.Position.Points.Num();
		const int32 NumSegments = bClosedLoop ? NumPoints : NumPoints - 1;
		const float TimeMultiplier = NumSegments / Duration;
		return GetTransformAtSplineInputKey(Time * TimeMultiplier, CoordinateSpace, bUseScale);
	}
}