Files
UnrealEngine/Engine/Plugins/MeshPainting/Source/MeshPaintingToolset/Public/MeshPaintGeometryCollectionAdapter.h
2025-05-18 13:04:45 +08:00

87 lines
4.1 KiB
C++

// Copyright Epic Games, Inc. All Rights Reserved.
#pragma once
#include "BaseMeshPaintComponentAdapter.h"
#include "MeshPaintComponentAdapterFactory.h"
#include "UObject/WeakObjectPtr.h"
class UBodySetup;
class UGeometryCollection;
class UGeometryCollectionComponent;
class UTexture;
class UGeometryCollection;
class UMeshComponent;
//////////////////////////////////////////////////////////////////////////
// FMeshPaintGeometryAdapterForSkeletalMeshes
class MESHPAINTINGTOOLSET_API FMeshPaintGeometryCollectionComponentAdapter : public FBaseMeshPaintComponentAdapter
{
public:
static void InitializeAdapterGlobals();
static void AddReferencedObjectsGlobals(FReferenceCollector& Collector);
static void CleanupGlobals();
/** Start IMeshPaintGeometryAdapter Overrides */
virtual bool Construct(UMeshComponent* InComponent, int32 InMeshLODIndex) override;
virtual ~FMeshPaintGeometryCollectionComponentAdapter();
virtual bool Initialize() override;
virtual void OnAdded() override;
virtual void OnRemoved() override;
virtual bool IsValid() const override;
virtual bool SupportsTexturePaint() const override { return IsValid(); }
virtual bool SupportsTextureColorPaint() const override { return false; }
virtual bool SupportsVertexPaint() const override { return IsValid(); }
virtual int32 GetNumUVChannels() const override;
virtual bool LineTraceComponent(struct FHitResult& OutHit, const FVector Start, const FVector End, const struct FCollisionQueryParams& Params) const override;
virtual void QueryPaintableTextures(int32 MaterialIndex, int32& OutDefaultIndex, TArray<struct FPaintableTexture>& InOutTextureList) override;
virtual void ApplyOrRemoveTextureOverride(UTexture* SourceTexture, UTexture* OverrideTexture) const override;
virtual void AddReferencedObjects(FReferenceCollector& Collector) override;
virtual void PreEdit() override;
virtual void PostEdit() override;
virtual void GetTextureCoordinate(int32 VertexIndex, int32 ChannelIndex, FVector2D& OutTextureCoordinate) const override;
virtual void GetVertexColor(int32 VertexIndex, FColor& OutColor, bool bInstance = true) const override;
virtual void SetVertexColor(int32 VertexIndex, FColor Color, bool bInstance = true) override;
virtual FMatrix GetComponentToWorldMatrix() const override;
/** End IMeshPaintGeometryAdapter Overrides */
/** Start FBaseMeshPaintGeometryAdapter Overrides */
virtual bool InitializeVertexData();
/** End FBaseMeshPaintGeometryAdapter Overrides */
protected:
/** Delegate called when geometry collection is changed on the component */
FDelegateHandle GeometryCollectionChangedHandle;
/** Geometry Collection component represented by this adapter */
TWeakObjectPtr<UGeometryCollectionComponent> GeometryCollectionComponent;
bool bSavedShowBoneColors = false;
// Texture override state
UE::MeshPaintingToolset::FDefaultTextureOverride TextureOverridesState;
/// Get the underlying UGeometryCollection from the component, as a non-const object
/// Caller must have already validated that the component weak pointer is still valid (as this is called per-vertex)
UGeometryCollection* GetGeometryCollectionObject() const;
void OnGeometryCollectionChanged();
// Like IsValid() but does not verify that the cached data matches
bool HasValidGeometryCollection() const;
// TODO: Store a LOD index if/when GeometryCollection supports LODs
};
//////////////////////////////////////////////////////////////////////////
// FMeshPaintGeometryAdapterForSkeletalMeshesFactory
class MESHPAINTINGTOOLSET_API FMeshPaintGeometryCollectionComponentAdapterFactory : public IMeshPaintComponentAdapterFactory
{
public:
virtual TSharedPtr<IMeshPaintComponentAdapter> Construct(UMeshComponent* InComponent, int32 InMeshLODIndex) const override;
virtual void InitializeAdapterGlobals() override { FMeshPaintGeometryCollectionComponentAdapter::InitializeAdapterGlobals(); }
virtual void AddReferencedObjectsGlobals(FReferenceCollector& Collector) override { FMeshPaintGeometryCollectionComponentAdapter::AddReferencedObjectsGlobals(Collector); }
virtual void CleanupGlobals() override { FMeshPaintGeometryCollectionComponentAdapter::CleanupGlobals(); }
};