UnrealEngineUWP/Engine/Source/Runtime/AnimGraphRuntime/Public/AnimNodes/AnimNode_ApplyAdditive.h

// Copyright 1998-2017 Epic Games, Inc. All Rights Reserved.

#pragma once

#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "Animation/AnimNodeBase.h"
#include "Animation/InputScaleBias.h"
#include "AnimNode_ApplyAdditive.generated.h"

USTRUCT()
struct ANIMGRAPHRUNTIME_API FAnimNode_ApplyAdditive : public FAnimNode_Base
{
	GENERATED_USTRUCT_BODY()

	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=Links)
	FPoseLink Base;

	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=Links)
	FPoseLink Additive;

	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=Settings, meta=(PinShownByDefault))
	mutable float Alpha;

	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=Settings)
	FInputScaleBias AlphaScaleBias;

	/* 
	 * Max LOD that this node is allowed to run
	 * For example if you have LODThreadhold to be 2, it will run until LOD 2 (based on 0 index)
	 * when the component LOD becomes 3, it will stop update/evaluate
	 * currently transition would be issue and that has to be re-visited
	 */
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = Performance, meta=(DisplayName="LOD Threshold"))
	int32 LODThreshold;

	UPROPERTY(Transient)
	float ActualAlpha;

public:	
	FAnimNode_ApplyAdditive();

	// FAnimNode_Base interface
	virtual void Initialize(const FAnimationInitializeContext& Context) override;
	virtual void CacheBones(const FAnimationCacheBonesContext& Context) override;
	virtual void Update(const FAnimationUpdateContext& Context) override;
	virtual void Evaluate(FPoseContext& Output) override;
	virtual void GatherDebugData(FNodeDebugData& DebugData) override;
	// End of FAnimNode_Base interface

};