/*
* @Author: namidame
* @Description: A Heatmap Generate Plugin, Supports Heightmap, Texture Coordinate Points And Geographic Location Data.
* @Date: 2023/03/24
*/

#pragma once

#include "CoreMinimal.h"
#include "ProceduralMeshComponent.h"
#include "GameFramework/Actor.h"
#include "Materials/MaterialInstanceDynamic.h"
#include "Curves/CurveFloat.h"
#include "Engine/Texture2D.h"
#include "HeatMapActor.generated.h"

UENUM(BlueprintType)
enum class E_HeatMapType : uint8
{
	NONE,
	HEIGHT_MAP,
	POINT_HEIGHT_DATA,
	GEO_DATA,
};

UCLASS()
class HEATMAP_API AHeatMapActor : public AActor
{
	GENERATED_BODY()
	
public:	
	// Sets default values for this actor's properties
	AHeatMapActor();

protected:
	// Called when the game starts or when spawned
	virtual void BeginPlay() override;

public:	
	// Called every frame
	virtual void Tick(float DeltaTime) override;

	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=HeatMap)
	UProceduralMeshComponent* MapMesh;

	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=HeatMap)
	UMaterialInterface* HeatMapActorMaterial;

	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=HeatMap)
	UTexture2D* HeightMapTexture;

	UFUNCTION(BlueprintCallable, Category=HeatMap)
	void CreateMapMesh(FVector2D mapSize);

	UFUNCTION(BlueprintCallable, Category=HeatMap)
	void CreateWithHeightMap(UTexture2D* texture, FVector2D mapSize);

	UFUNCTION(BlueprintCallable, Category=HeatMap)
	void CreateWithData(const TArray<FColor>& colorArr, FVector2D textureSize, FVector2D mapSize);

	UFUNCTION(BlueprintCallable, Category=HeatMap)
	void setMaterialLerpScale(float scale);

	UFUNCTION(BlueprintCallable, Category=HeatMap)
	void setMaterialHeightScale(float scale);

	UFUNCTION(BlueprintCallable, Category=HeatMap)
	void setMaterialOpacity(float opacity);
	
	static TArray<FColor> GetColorDataFromTexture(UTexture2D* texture, FVector2D textureSize);
	TArray<FColor> GetColorDataFromPointHeightMap(const TMap<FVector2D, float> &map, FVector2D texture_size, int32 influenceSize);

	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=HeatMap)
	FVector2D TextureSize;

	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=HeatMap)
	FVector2D MapSize;

	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=HeatMap)
	FVector2D MapSecment;
	
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=HeatMap)
	float LerpScale;
	
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=HeatMap)
	float HeightScale;
	
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=HeatMap)
	float Opacity;
	
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=HeatMap)
	int32 InfluenceSize;
	
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=HeatMap)
	UCurveFloat* InfluenceCurve;

	UFUNCTION(BlueprintCallable, Category=HeatMap)
	void setMapSecment(FVector2D secment);

	UFUNCTION(BlueprintCallable, Category=HeatMap)
	void setMapSize(FVector2D size);

	UFUNCTION(BlueprintCallable, Category=HeatMap)
	void CreateWithPointHeightValue(const TMap<FVector2D, float> &map, FVector2D texture_size, FVector2D map_size, bool isGeoData);
		
	UFUNCTION(BlueprintCallable, Category=HeatMap)
	void CreateWithGeoInfoMap(const TMap<FVector, float> &map);

	UFUNCTION(BlueprintCallable, Category=HeatMap)
	void AddPointHeightValue(const FVector2D &pos, float value);

	UFUNCTION(BlueprintCallable, Category=HeatMap)
	void DeletePointHeightValue(const FVector2D& pos);

	UFUNCTION(BlueprintCallable, Category=HeatMap)
	void setPointInfluenceSize(int32 size);

	UFUNCTION(BlueprintCallable, Category=HeatMap)
	void ReGenerateMapAndMaterial();

	UFUNCTION(BlueprintCallable, Category=HeatMap)
	void setMapGeoLocation(FVector loc);

	UFUNCTION(BlueprintCallable, Category=HeatMap)
	TMap<FVector2D, float> ConvertGeoValueMapToUnrealValueMap(const TMap<FVector, float>& map);
protected:
	UPROPERTY(BlueprintReadWrite, Category=HeatMap)
	UMaterialInstanceDynamic* Material;
	
	// 高度图点集数据
	UPROPERTY(BlueprintReadWrite, Category=HeatMap)
	TMap<FVector2D, float> PointHeightValueMap;

	// 地理点数据
	UPROPERTY(BlueprintReadWrite, Category=HeatMap)
	TMap<FVector, float> GeoInfoMap;
	
	UPROPERTY(BlueprintReadWrite, Category=HeatMap)
	E_HeatMapType m_type;

	UFUNCTION(BlueprintCallable, Category=HeatMap)
	FVector ConvertGeoGraphicToEngine(FVector location);
};