AnimNode_BlendBoneByChannel.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "Animation/AnimNodeBase.h"
#include "Animation/InputScaleBias.h"
#include "BoneContainer.h"
#include "AnimNode_BlendBoneByChannel.generated.h"
 
USTRUCT(BlueprintInternalUseOnly)
struct FBlendBoneByChannelEntry
{
    GENERATED_USTRUCT_BODY()
 
    
    UPROPERTY(EditAnywhere, Category = Blend)
    FBoneReference SourceBone;
    
    UPROPERTY(EditAnywhere, Category = Blend)
    FBoneReference TargetBone;
 
    UPROPERTY(EditAnywhere, Category = Blend)
    bool bBlendTranslation;
 
    UPROPERTY(EditAnywhere, Category = Blend)
    bool bBlendRotation;
 
    UPROPERTY(EditAnywhere, Category = Blend)
    bool bBlendScale;
 
    FBlendBoneByChannelEntry()
        : bBlendTranslation(true)
        , bBlendRotation(true)
        , bBlendScale(true)
    {
    }
};
 
USTRUCT(BlueprintInternalUseOnly)
struct FAnimNode_BlendBoneByChannel : public FAnimNode_Base
{
    GENERATED_USTRUCT_BODY()
 
public:
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = Links)
    FPoseLink A;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = Links)
    FPoseLink B;
 
    UPROPERTY(EditAnywhere, Category = Blend, meta = (DisplayAfter = "AlphaScaleBias"))
    TArray<FBlendBoneByChannelEntry> BoneDefinitions;
 
private:
    // Array of bone entries, that has been validated to be correct at runtime.
    // So we don't have to perform validation checks per frame.
    TArray<FBlendBoneByChannelEntry> ValidBoneEntries;
 
public:
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = Settings, meta = (PinShownByDefault, DisplayAfter = "B"))
    float Alpha;
 
private:
    float InternalBlendAlpha;
 
public:
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = Settings)
    FInputScaleBias AlphaScaleBias;
 
    UPROPERTY(EditAnywhere, Category = Blend)
    TEnumAsByte<EBoneControlSpace> TransformsSpace;
 
private:
    bool bBIsRelevant;
 
public:
    FAnimNode_BlendBoneByChannel()
        : Alpha(0.0f)
        , InternalBlendAlpha(0.0f)
        , TransformsSpace(EBoneControlSpace::BCS_BoneSpace)
        , bBIsRelevant(false)
    {
    }
 
    // FAnimNode_Base interface
    ANIMGRAPHRUNTIME_API virtual void Initialize_AnyThread(const FAnimationInitializeContext& Context) override;
    ANIMGRAPHRUNTIME_API virtual void CacheBones_AnyThread(const FAnimationCacheBonesContext& Context) override;
    ANIMGRAPHRUNTIME_API virtual void Update_AnyThread(const FAnimationUpdateContext& Context) override;
    ANIMGRAPHRUNTIME_API virtual void Evaluate_AnyThread(FPoseContext& Output) override;
    ANIMGRAPHRUNTIME_API virtual void GatherDebugData(FNodeDebugData& DebugData) override;
    // End of FAnimNode_Base interface
};