VideoDisplaySurface.h

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/*****************************
 Copyright 2015 (c) Leonardo Malave. All rights reserved.
 
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 THIS SOFTWARE IS PROVIDED BY Leonardo Malave ''AS IS'' AND ANY EXPRESS OR IMPLIED
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#pragma once

#include "GameFramework/Actor.h"
#include "IVideoSource.h"
#include "VideoDisplaySurface.generated.h"

/**
 * This is a surface (ShapePlane mesh) that can display video from a camera
 */
UCLASS()
class AVideoDisplaySurface : public AActor
{
	GENERATED_BODY()


public:
	AVideoDisplaySurface(const class FPostConstructInitializeProperties& PCIP);

	// mesh to use
	UPROPERTY(VisibleDefaultsOnly, BlueprintReadOnly, Category = AugmentedReality)
    TSubobjectPtr<UStaticMeshComponent> VideoSurfaceMesh;

	UPROPERTY(VisibleAnywhere, BlueprintReadWrite, Category = AugmentedReality)
	float PreferredDistanceInMeters;


    UFUNCTION(BlueprintCallable, Category = AugmentedReality)
    uint16 GetWidthToDistanceRatio();
    
    UFUNCTION(BlueprintCallable, Category = AugmentedReality)
    uint16 GetHeightToDistanceRatio();

    void Init(IVideoSource* VideoSource);

protected:

	UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category = AugmentedReality)
    UTexture2D* VideoTexture;

	/** Update texture region from https://wiki.unrealengine.com/Dynamic_Textures */
	void UpdateTextureRegions(UTexture2D* Texture, int32 MipIndex, uint32 NumRegions, FUpdateTextureRegion2D* Regions, uint32 SrcPitch, uint32 SrcBpp, uint8* SrcData, bool bFreeData);

	//UFUNCTION(BlueprintCallable, Category = AugmentedReality)
    //void CreateVideoTexture();

	UFUNCTION(BlueprintCallable, Category = AugmentedReality)
    void UpdateVideoFrame();

	virtual void Tick(float DeltaTime) override;
    
	virtual void BeginPlay() override;

	virtual void EndPlay(const EEndPlayReason::Type EndPlayReason) override;

	void InitVideoMaterialTexture();

	FVector GetWorldLocationFromPixelCoordinates(FVector2D PixelCoordinates);
		
	UPROPERTY()
	TArray<FColor> VideoFrameData;

	FUpdateTextureRegion2D *VideoTextureRegion;

	UMaterialInstanceDynamic *VideoMaterial;

    IVideoSource* VideoSource;

private:
	
	
};