ZoomGesture.h

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// Copyright 2024 Lost in Game Studio. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "TwoFingerGestureBase.h"
#include "ZoomGesture.generated.h"
 
DECLARE_DYNAMIC_MULTICAST_DELEGATE_ThreeParams(FTwoFingerGestureSignature, float, Delta, float, CurrentOffset, FVector2D, Direction);

UCLASS()
class TOUCHINTERFACE_API UZoomGesture : public UTwoFingerGestureBase
{
    GENERATED_BODY()
 
public:
    UZoomGesture();
 
    virtual void Initialization_Implementation() override;
 
    virtual void OnGestureStarted_Implementation(const TArray<FGestureData>& GestureData) override;
 
    virtual void OnGestureUpdated_Implementation(const TArray<FGestureData>& GestureData) override;
 
    virtual void OnGestureEnded_Implementation(const TArray<FGestureData>& GestureData) override;
 
    UPROPERTY(Category="Zoom Gesture", BlueprintAssignable)
    FTwoFingerGestureSignature OnZoom;
 
private:
    UPROPERTY(Category="Zoom Gesture", EditAnywhere, BlueprintReadOnly, meta=(AllowPrivateAccess="true"))
    float MinimumDeltaToSendEvent;
 
    float LastZoomOffset;
    float StartOffsetBetweenFinger;
};