AnimNode_ScaleChainLength.h

Go to the documentation of this file.

// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "BoneIndices.h"
#include "BoneContainer.h"
#include "BonePose.h"
#include "BoneControllers/AnimNode_SkeletalControlBase.h"
#include "AnimNode_ScaleChainLength.generated.h"
 
class USkeletalMeshComponent;
 
UENUM(BlueprintType)
enum class EScaleChainInitialLength : uint8
{
    FixedDefaultLengthValue,
    Distance,
    /* Use animated chain length (length in local space of every bone from 'ChainStartBone' to 'ChainEndBone' */
    ChainLength,
};
 
USTRUCT(BlueprintInternalUseOnly)
struct FAnimNode_ScaleChainLength : public FAnimNode_Base
{
    GENERATED_USTRUCT_BODY()
 
    UPROPERTY(EditAnywhere, Category = Links)
    FPoseLink InputPose;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = ScaleChainLength, meta = (PinHiddenByDefault))
    float DefaultChainLength;
 
    UPROPERTY(EditAnywhere, Category = ScaleChainLength)
    FBoneReference ChainStartBone;
 
    UPROPERTY(EditAnywhere, Category = ScaleChainLength)
    FBoneReference ChainEndBone;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = ScaleChainLength, meta = (PinShownByDefault))
    FVector TargetLocation;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = Settings, meta = (PinShownByDefault))
    float Alpha;
 
    float ActualAlpha;
 
    UPROPERTY(EditAnywhere, Category = Settings)
    FInputScaleBias AlphaScaleBias;
 
    UPROPERTY(EditAnywhere, Category = ScaleChainLength)
    EScaleChainInitialLength ChainInitialLength;
 
    bool bBoneIndicesCached;
 
    TArray<FCompactPoseBoneIndex> ChainBoneIndices;
 
public:
    ANIMGRAPHRUNTIME_API FAnimNode_ScaleChainLength();
 
    // FAnimNode_Base interface
    ANIMGRAPHRUNTIME_API virtual void Initialize_AnyThread(const FAnimationInitializeContext& Context) override;
    ANIMGRAPHRUNTIME_API virtual void Update_AnyThread(const FAnimationUpdateContext& Context) override;
    ANIMGRAPHRUNTIME_API virtual void CacheBones_AnyThread(const FAnimationCacheBonesContext& Context) override;
    ANIMGRAPHRUNTIME_API virtual void Evaluate_AnyThread(FPoseContext& Output) override;
    ANIMGRAPHRUNTIME_API virtual void GatherDebugData(FNodeDebugData& DebugData) override;
    // End of FAnimNode_Base interface
 
protected:
    ANIMGRAPHRUNTIME_API double GetInitialChainLength(FCompactPose& InLSPose, FCSPose<FCompactPose>& InCSPose) const;
};