RepositionableTransformGizmo.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
 
#include "BaseGizmos/CombinedTransformGizmo.h"
#include "InteractiveGizmoBuilder.h"
#include "ToolContextInterfaces.h"
 
#include "RepositionableTransformGizmo.generated.h"
 
class IToolContextTransactionProvider;
class UTransformProxy;
 
UCLASS(MinimalAPI)
class URepositionableTransformGizmoBuilder : public UCombinedTransformGizmoBuilder
{
    GENERATED_BODY()
 
public:
 
    INTERACTIVETOOLSFRAMEWORK_API virtual UInteractiveGizmo* BuildGizmo(const FToolBuilderState& SceneState) const override;
};
 
 
UCLASS(MinimalAPI)
class URepositionableTransformGizmo : public UCombinedTransformGizmo
{
    GENERATED_BODY()
 
public:
 
    INTERACTIVETOOLSFRAMEWORK_API virtual void SetActiveTarget(UTransformProxy* Target, IToolContextTransactionProvider* TransactionProvider = nullptr) override;
 
    INTERACTIVETOOLSFRAMEWORK_API virtual void SetWorldAlignmentFunctions(
        TUniqueFunction<bool()>&& ShouldAlignTranslationIn,
        TUniqueFunction<bool(const FRay&, FVector&)>&& TranslationAlignmentRayCasterIn) override;
 
    INTERACTIVETOOLSFRAMEWORK_API virtual void SetPivotAlignmentFunctions(
        TUniqueFunction<bool()>&& ShouldAlignPivotIn,
        TUniqueFunction<bool(const FRay&, FVector&)>&& PivotAlignmentRayCasterIn);
protected:
 
    TUniqueFunction<bool()> ShouldAlignPivot = []() { return false; };
    TUniqueFunction<bool(const FRay&, FVector&)> PivotAlignmentRayCaster = [](const FRay&, FVector&) {return false; };
 
    TArray<UInteractiveGizmo*> PivotAlignmentGizmos;
 
    UPROPERTY()
    TObjectPtr<UGizmoTransformChangeStateTarget> RepositionStateTarget;
 
    // Helper functions
    INTERACTIVETOOLSFRAMEWORK_API void ModifyPivotAxisGizmo(UInteractiveGizmo* SubGizmoIn);
    INTERACTIVETOOLSFRAMEWORK_API void ModifyPivotPlaneGizmo(UInteractiveGizmo* SubGizmoIn);
    INTERACTIVETOOLSFRAMEWORK_API void ModifyPivotRotateGizmo(UInteractiveGizmo* SubGizmoIn);
private:
    void ModifyPivotFreeTranslationGizmo(UInteractiveGizmo* SubGizmoIn);
    void ModifyPivotFreeRotationGizmo(UInteractiveGizmo* SubGizmoIn);
};