MovieSceneCameraCutTrackInstance.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "EntitySystem/BuiltInComponentTypes.h"
#include "EntitySystem/TrackInstance/MovieSceneTrackInstance.h"
#include "UObject/ObjectMacros.h"
 
#include "MovieSceneCameraCutTrackInstance.generated.h"
 
#define UE_API MOVIESCENETRACKS_API
 
class IMovieScenePlayer;
class UMovieSceneCameraCutSection;
 
namespace UE::MovieScene
{ 
    class FCameraCutViewportPreviewer;
    struct FCameraCutAnimator; 
    struct FCameraCutPlaybackCapability;
    struct FOnCameraCutUpdatedParams;
    struct FSequenceInstance;
 
    // Backwards compatibilty wrapper for camera cut playback capability.
    struct FCameraCutPlaybackCapabilityCompatibilityWrapper
    {
        FCameraCutPlaybackCapabilityCompatibilityWrapper(const FSequenceInstance& SequenceInstance);
 
        bool ShouldUpdateCameraCut();
        void OnCameraCutUpdated(const FOnCameraCutUpdatedParams& Params);
#if WITH_EDITOR
        bool ShouldRestoreEditorViewports();
#endif
 
        FCameraCutPlaybackCapability* CameraCutCapability;
        IMovieScenePlayer* Player;
    };
}
 
UCLASS(MinimalAPI)
class UMovieSceneCameraCutTrackInstance : public UMovieSceneTrackInstance
{
    GENERATED_BODY()
 
public:
#if WITH_EDITOR
    static UE_API void ToggleCameraCutLock(UMovieSceneEntitySystemLinker* Linker, bool bEnableCameraCuts, bool bRestoreViewports);
#endif
 
private:
    UE_API virtual void OnInitialize() override;
    UE_API virtual void OnAnimate() override;
    UE_API virtual void OnEndUpdateInputs() override;
    UE_API virtual void OnDestroyed() override;
 
private:
    struct FCameraCutCache
    {
        TWeakObjectPtr<> LastLockedCamera;
        FMovieSceneTrackInstanceInput LastInput;
    };
 
    struct FCameraCutInputInfo
    {
        FMovieSceneTrackInstanceInput Input;
        float GlobalStartTime = 0.f;
    };
 
    FCameraCutCache CameraCutCache;
    TArray<FCameraCutInputInfo> SortedInputInfos;
 
#if WITH_EDITOR
    TUniquePtr<UE::MovieScene::FCameraCutViewportPreviewer> ViewportPreviewer;
#endif
 
private:
 
    friend struct UE::MovieScene::FCameraCutAnimator;
};
 
#undef UE_API