MovieScenePiecewiseEnumBlenderSystem.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "EntitySystem/MovieSceneBlenderSystem.h"
#include "EntitySystem/MovieSceneCachedEntityFilterResult.h"
#include "EntitySystem/MovieSceneEntitySystem.h"
#include "HAL/Platform.h"
#include "Systems/MovieSceneBlenderSystemHelper.h"
#include "UObject/ObjectMacros.h"
#include "UObject/UObjectGlobals.h"
 
#include "MovieScenePiecewiseEnumBlenderSystem.generated.h"
 
class UObject;
 
namespace UE
{
namespace MovieScene
{
 
struct FSimpleBlenderEnumResultTraits
{
    static void ZeroAccumulationBuffer(TArrayView<TSimpleBlendResult<uint8>> Buffer)
    {
        FMemory::Memzero(Buffer.GetData(), sizeof(TSimpleBlendResult<uint8>) * Buffer.Num());
    }
 
    static void AccumulateResult(TSimpleBlendResult<uint8>& InOutValue, uint8 Contributor)
    {
        InOutValue.Value = Contributor;
        ++InOutValue.NumContributors;
    }
 
    static uint8 BlendResult(const TSimpleBlendResult<uint8>& InResult)
    {
        return InResult.Value;
    }
};
 
} // namespace MovieScene
} // namespace UE
 
UCLASS(MinimalAPI)
class UMovieScenePiecewiseEnumBlenderSystem : public UMovieSceneBlenderSystem
{
public:
 
    GENERATED_BODY()
 
    MOVIESCENETRACKS_API UMovieScenePiecewiseEnumBlenderSystem(const FObjectInitializer& ObjInit);
 
    MOVIESCENETRACKS_API virtual void OnRun(FSystemTaskPrerequisites& InPrerequisites, FSystemSubsequentTasks& Subsequents) override;
 
private:
 
    UE::MovieScene::TSimpleBlenderSystemImpl<uint8, UE::MovieScene::FSimpleBlenderEnumResultTraits> Impl;
};