ComponentSourceInterfaces.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Math/UnrealMath.h"
#include "Misc/Optional.h"
#include "Templates/Function.h"
 
// predeclarations
class AActor;
class UActorComponent;
class UPrimitiveComponent;
struct FMeshDescription;
class UMaterialInterface;
struct FHitResult;
struct FComponentMaterialSet;
 
class FPrimitiveComponentTarget
{
public:
    virtual ~FPrimitiveComponentTarget(){}
 
    FPrimitiveComponentTarget( UPrimitiveComponent* Component ): Component( Component ){}
 
    INTERACTIVETOOLSFRAMEWORK_API virtual bool IsValid() const;
 
    INTERACTIVETOOLSFRAMEWORK_API AActor* GetOwnerActor() const;
 
    INTERACTIVETOOLSFRAMEWORK_API UPrimitiveComponent* GetOwnerComponent() const;
 
    INTERACTIVETOOLSFRAMEWORK_API int32 GetNumMaterials() const;
 
    INTERACTIVETOOLSFRAMEWORK_API UMaterialInterface* GetMaterial(int32 MaterialIndex) const;
 
    INTERACTIVETOOLSFRAMEWORK_API virtual void GetMaterialSet(FComponentMaterialSet& MaterialSetOut, bool bAssetMaterials = false) const;
 
    INTERACTIVETOOLSFRAMEWORK_API FTransform GetWorldTransform() const;
 
    INTERACTIVETOOLSFRAMEWORK_API bool HitTest(const FRay& WorldRay, FHitResult& OutHit) const;
 
    INTERACTIVETOOLSFRAMEWORK_API void SetOwnerVisibility(bool bVisible) const;
 
 
    virtual bool HasSameSourceData(const FPrimitiveComponentTarget& OtherTarget) const = 0;
 
    INTERACTIVETOOLSFRAMEWORK_API virtual void CommitMaterialSetUpdate(const FComponentMaterialSet& MaterialSet, bool bApplyToAsset);
 
 
    struct FCommitParams
    {
        FMeshDescription* MeshDescription{ nullptr };
    };
    using  FCommitter  = TFunction< void( const FCommitParams& ) >;
    virtual FMeshDescription* GetMesh() = 0;
    virtual void CommitMesh( const FCommitter& ) = 0;
 
    UPrimitiveComponent* Component{};
};
 
class FComponentTargetFactory
{
public:
    virtual ~FComponentTargetFactory(){}
    virtual bool CanBuild( UActorComponent* Candidate ) = 0;
    virtual TUniquePtr<FPrimitiveComponentTarget> Build( UPrimitiveComponent* PrimitiveComponent ) = 0;
};
 
INTERACTIVETOOLSFRAMEWORK_API int32 AddComponentTargetFactory( TUniquePtr<FComponentTargetFactory> Factory );
 
 
INTERACTIVETOOLSFRAMEWORK_API FComponentTargetFactory* FindComponentTargetFactoryByKey(int32 Key);
 
 
INTERACTIVETOOLSFRAMEWORK_API bool RemoveComponentTargetFactoryByKey(int32 Key);
 
 
INTERACTIVETOOLSFRAMEWORK_API void RemoveAllComponentTargetFactoryies();
 
 
INTERACTIVETOOLSFRAMEWORK_API TUniquePtr<FPrimitiveComponentTarget> MakeComponentTarget(UPrimitiveComponent* Component);
 
 
INTERACTIVETOOLSFRAMEWORK_API bool CanMakeComponentTarget(UActorComponent* Component);