WidgetTransform.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "Math/TransformCalculus2D.h"
#include "Rendering/SlateRenderTransform.h"
#include "WidgetTransform.generated.h"
 
USTRUCT(BlueprintType)
struct FWidgetTransform
{
    GENERATED_USTRUCT_BODY()
 
public:
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=Transform, meta=( Delta = "1" ))
    FVector2D Translation;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=Transform, meta=( UIMin = "-5", UIMax = "5", Delta = "0.05" ))
    FVector2D Scale;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=Transform, meta=( UIMin = "-89", ClampMin = "-89", UIMax = "89", ClampMax = "89", Delta = "1" ))
    FVector2D Shear;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category=Transform, meta=( UIMin = "-180", UIMax = "180", Delta = "1" ))
    float Angle;
 
public:
 
    FWidgetTransform()
        : Translation(FVector2D::ZeroVector)
        , Scale(FVector2D::UnitVector)
        , Shear(FVector2D::ZeroVector)
        , Angle(0)
    {
    }
 
    FWidgetTransform(const FVector2D& InTranslation, const FVector2D& InScale, const FVector2D& InShear, float InAngle)
        : Translation(InTranslation)
        , Scale(InScale)
        , Shear(InShear)
        , Angle(InAngle)
    {
    }
 
    bool IsIdentity() const
    {
        const static FWidgetTransform Identity;
 
        return Identity == *this;
    }
 
    inline bool operator==( const FWidgetTransform &Other ) const
    {
        return Scale == Other.Scale && Shear == Other.Shear && Angle == Other.Angle && Translation == Other.Translation;
    }
 
    inline bool operator!=( const FWidgetTransform& Other ) const
    {
        return !( *this == Other );
    }
 
    inline FSlateRenderTransform ToSlateRenderTransform() const
    {
        return ::Concatenate(
            FScale2D(Scale),
            FShear2D::FromShearAngles(Shear),
            FQuat2D(FMath::DegreesToRadians(Angle)),
            FVector2D(Translation));
    }
};