RadarChart/RadarChartWidget.h at main · HardCrabS/RadarChart · GitHub

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#pragma once

#include "CoreMinimal.h"
#include "Blueprint/UserWidget.h"
#include "RadarChartWidget.generated.h"


UCLASS()
class RADARCHARTPROJECT_API URadarChartWidget : public UUserWidget
{
	GENERATED_BODY()

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

    UFUNCTION(BlueprintCallable)
    void SetAxisValue(const FName& AxisName, float Value);
    UFUNCTION(BlueprintCallable)
    void StartFilledPolygonAnimation(const TMap<FName, float>& AxesDiff);
protected:
    virtual void NativeTick(const FGeometry& MyGeometry, float InDeltaTime) override;
    virtual int32 NativePaint(
        const FPaintArgs& Args,
        const FGeometry& AllottedGeometry,
        const FSlateRect& MyCullingRect,
        FSlateWindowElementList& OutDrawElements,
        int32 LayerId,
        const FWidgetStyle& InWidgetStyle,
        bool bParentEnabled
    ) const override;
private:
    void SyncEditorData();

    void DrawWiredPolygon(const FGeometry& AllottedGeometry, FSlateWindowElementList& OutDrawElements, int32 LayerId, float Scale) const;
    void DrawAxes(const FGeometry& AllottedGeometry, FSlateWindowElementList& OutDrawElements, int32 LayerId) const;
    void DrawFilledPolygon(const FGeometry& AllottedGeometry, FSlateWindowElementList& OutDrawElements, int32 LayerId, const FWidgetStyle& InWidgetStyle) const;
    void DrawFilledPolygonOutline(const FGeometry& AllottedGeometry, FSlateWindowElementList& OutDrawElements, int32 LayerId, const FWidgetStyle& InWidgetStyle) const;
    void DrawRadarChart(const FGeometry& AllottedGeometry, FSlateWindowElementList& OutDrawElements, int32 LayerId) const;
    float GetAxisValue(const FName& Axis) const;
private:
    UPROPERTY(EditAnywhere, Category = "Appearance")
    FSlateBrush Brush;
    UPROPERTY(EditAnywhere, Category = "Appearance", meta = (ToolTip = "Filled polygon vertices brush"))
    FSlateBrush DotBrush;
    UPROPERTY(EditAnywhere, Category = "Chart")
    bool bDrawFilledPolygon = true;
    UPROPERTY(EditAnywhere, Category = "Chart",
        meta = (ToolTip = "Draw marks with specified steps", EditCondition = "!bDrawFilledPolygon"))
    bool bDrawValueMarks = true;
    UPROPERTY(EditAnywhere, Category = "Chart",
        meta = (EditCondition = "!bDrawFilledPolygon && bDrawValueMarks", ClampMin = "0.1", ClampMax = "0.5"))
    float MarkingStep = 0.2f;
    UPROPERTY(EditAnywhere, Category = "Chart")
    int32 NumAxes = 5;
    UPROPERTY(EditAnywhere, Category = "Chart", meta = (ToolTip = "Normalized values per axis [0..1]"))
    TMap<FName, float> AxesValuesMap;
    UPROPERTY(EditAnywhere, Category = "Chart")
    FLinearColor OutlineColor = FLinearColor(0.f, 0.8f, 1.f, 1.f);
    UPROPERTY(EditAnywhere, Category = "Chart")
    FLinearColor FilledOutlineColor = FLinearColor(0.8f, 0.1f, 0.1f, 1.f);
    UPROPERTY(EditAnywhere, Category = "Chart")
    float OutlineThickness = 2.f;
    UPROPERTY(EditAnywhere, Category = "Chart")
    float AnimDuration = 3.f;

    UPROPERTY()
    TArray<FVector2f> AxisDirections;
    UPROPERTY()
    TArray<FName> AxesOrderFromTop;

    // --- Filled polygon animation ---
    TMap<FName, float> StartValuesMap;
    TMap<FName, float> DiffValuesMap;
    float AnimElapsed = 0.f;
    bool bAnimating = false;
    // --- --- ---
};