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API > API/Runtime > API/Runtime/Engine > API/Runtime/Engine/UBlueprintSpringMathLibrary
Description
Interpolates the value InOutRotation towards TargetRotation using a critically damped spring via an intermediate state - producing a more S-shaped curve. The velocity of InOutRotation is stored in InOutAngularVelocity in deg/s.
| Name | CriticalDoubleSpringDampQuat |
| Type | function |
| Header File | /Engine/Source/Runtime/Engine/Classes/Kismet/BlueprintSpringMathLibrary.h |
| Include Path | #include "Kismet/BlueprintSpringMathLibrary.h" |
| Source | /Engine/Source/Runtime/Engine/Private/BlueprintSpringMathLibrary.cpp |
UFUNCTION (BlueprintCallable, Meta=(Category="Math|Spring", AutoCreateRefTerm="TargetRotation"))
static void CriticalDoubleSpringDampQuat
(
FQuat & InOutRotation,
FVector & InOutAngularVelocity,
FQuat & InOutIntermediateRotation,
FVector & InOutIntermediateAngularVelocity,
const FQuat & TargetRotation,
float DeltaTime,
float SmoothingTime
)
Parameters
| Name | Remarks |
|---|---|
| InOutRotation | The value to be damped |
| InOutAngularVelocity | The speed of the value to be damped in deg/s |
| InOutIntermediateRotation | The intermediate state of the double spring |
| InOutIntermediateAngularVelocity | The intermediate velocity of the double spring |
| TargetRotation | The goal to damp towards |
| SmoothingTime | The smoothing time to use for the spring. Longer times lead to more damped behaviour. A time of 0 will snap InOutRotation to TargetRotation |
| DeltaTime | Timestep in seconds |