#include <ComposableCameraComputeDistanceToActorNode.h>

Inherits: UComposableCameraComputeNodeBase

Example compute node: measures the distance between two actors at camera activation and publishes the result.

Typical use case: at activation time, compute the distance between the player and a target, then feed that into downstream camera nodes to scale a boom arm length, set an initial FOV, or pick a blend weight — values that are sampled once and held stable for the camera's lifetime.

Inputs:

• ActorA (Actor): first actor (e.g. the player pawn)

• ActorB (Actor): second actor (e.g. the look-at target)

Outputs:

• Distance (Float): Euclidean distance between the two actors

• Direction (Vector3D): unit direction from ActorA to ActorB

Public Methods¶

ExecuteBeginPlay¶

virtual

virtual void ExecuteBeginPlay()

Execute this compute node's one-shot work.

Called from AComposableCameraCameraBase::BeginPlayCamera, after every node on the camera (both camera nodes and compute nodes) has already had Initialize() / OnInitialize_Implementation() run. By the time this fires, OwningCamera / OwningPlayerCameraManager / RuntimeDataBlock are all wired, so GetInputPinValue / SetOutputPinValue / Get/SetInternalVariable are all safe to use.

The outgoing camera pose (the pose the previous camera was evaluating before this one became active) is available via OwningPlayerCameraManager->GetCurrentCameraPose() — this is the same value AActor::BeginPlay used to pass into BeginPlayCamera as a parameter before Step 4a removed that argument.

Plain virtual (not a BlueprintNativeEvent) for 4a. If Blueprint authoring of compute nodes becomes a requirement later, promote this to a BlueprintNativeEvent following the same OnFoo / OnFoo_Implementation pattern used by OnInitialize and OnTickNode on the parent class.

GetPinDeclarations_Implementation¶

virtual const

virtual void GetPinDeclarations_Implementation(TArray< FComposableCameraNodePinDeclaration > & OutPins) const