#pragma once

#include "CoreMinimal.h"
#include "Camera/CameraActor.h"
#include "CameraCaptureActor.generated.h"


#define CAMERA_WIDTH_NUMS		3
#define CAMERA_HEIGHTH_NUMS		3

const int32 AtlasGridX = 3;
const int32 AtlasGridY = 3;
const int32 ViewWidth = 1024;
const int32 ViewHeight = 1024;



UENUM(BlueprintType)
enum class EViewDistribution : uint8
{
    LinearHorizontal UMETA(DisplayName = "Linear Horizontal"),
    Circular UMETA(DisplayName = "Circular")
};


class USceneCaptureComponent2D;
class UTextureRenderTarget2D;



UCLASS()
class CAMERACAPTURE_API ACameraCaptureActor : public ACameraActor
{
    GENERATED_BODY()

public:
    ACameraCaptureActor();

    USceneCaptureComponent2D* GetViewCapture() { return ViewCapture; }
    UTextureRenderTarget2D* GetViewRT() { return ViewRT; }

    void CaptureNow();

    // ===== 多视图参数 =====

    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "MultiView")
    int32 ViewCount = 1;

    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "MultiView")
    float Baseline = 5.0f; // cm

    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "MultiView")
    EViewDistribution Distribution = EViewDistribution::LinearHorizontal;

    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "MultiView")
    bool bCaptureEveryFrame = true;

protected:
    virtual void BeginPlay() override;

#if WITH_EDITOR
    virtual void PostEditChangeProperty(FPropertyChangedEvent& PropertyChangedEvent) override;
#endif



private:

    void BuildViewCaptures();
    void UpdateViewTransforms(const int32 Index);
    void CaptureViews();

private:

    UPROPERTY(VisibleAnywhere, BlueprintReadOnly, meta = (AllowPrivateAccess = "true"))
    TObjectPtr<USceneCaptureComponent2D> ViewCapture;

    UPROPERTY(Transient)
    TObjectPtr<UTextureRenderTarget2D> ViewRT;

};