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#rb Tyson.Brochu #rnx #jira UE-126076 #preflight 616f23439f18020001d76b25 #ROBOMERGE-AUTHOR: semion.piskarev #ROBOMERGE-SOURCE: CL 17884530 in //UE5/Release-5.0/... via CL 17884547 #ROBOMERGE-BOT: STARSHIP (Release-Engine-Staging -> Release-Engine-Test) (v883-17842818) #ROBOMERGE[STARSHIP]: UE5-Main [CL 17884554 by semion piskarev in ue5-release-engine-test branch]
88 lines
3.1 KiB
C++
88 lines
3.1 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreMinimal.h"
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#include "DynamicMesh/DynamicMeshAABBTree3.h"
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#include "GeometryBase.h"
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#include "PolyEditActivityContext.generated.h"
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PREDECLARE_GEOMETRY(class FDynamicMesh3);
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PREDECLARE_GEOMETRY(class FDynamicMeshChange);
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PREDECLARE_GEOMETRY(struct FGroupTopologySelection);
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PREDECLARE_GEOMETRY(class FGroupTopology);
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class FToolCommandChange;
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class UPolyEditCommonProperties;
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class UPolygonSelectionMechanic;
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class UMeshOpPreviewWithBackgroundCompute;
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UCLASS()
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class MESHMODELINGTOOLS_API UPolyEditActivityContext : public UObject
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{
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GENERATED_BODY()
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public:
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UPROPERTY()
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TObjectPtr<UPolyEditCommonProperties> CommonProperties;
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/**
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* The CurrentMesh is the authoritative current version of the mesh, which would be baked back
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* to the asset on accept.
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*/
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TSharedPtr<UE::Geometry::FDynamicMesh3, ESPMode::ThreadSafe> CurrentMesh;
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/**
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* The mesh stored in the preview is not authoritative. It may be altered in various ways as the
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* user previews potential changes, and may be reset back to CurrentMesh if an activity
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* is cancelled.
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*/
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UPROPERTY()
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TObjectPtr<UMeshOpPreviewWithBackgroundCompute> Preview;
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/**
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* The activity should update CurrentTopology and MeshSpatial if it alters CurrentMesh.
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*/
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TSharedPtr<UE::Geometry::FGroupTopology, ESPMode::ThreadSafe> CurrentTopology;
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TSharedPtr<UE::Geometry::FDynamicMeshAABBTree3, ESPMode::ThreadSafe> MeshSpatial;
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bool bTriangleMode = false;
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/**
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* The activity may use the selection mechanic to get (or alter) the current selection, though
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* if selection is just being changed at the end of the activity, it should probably be done
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* through EmitCurrentMeshChangeAndUpdate so that it is lumped with the same undo transaction.
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*/
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UPROPERTY()
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TObjectPtr<UPolygonSelectionMechanic> SelectionMechanic;
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/**
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* Given a change to CurrentMesh (already applied and stored in MeshChangeIn), use this
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* function to properly emit it from the host. Be aware that the host will update any
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* related data structures at this time (spatial, preview, etc) so that state is consistent
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* with undo/redo.
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*/
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TUniqueFunction<void (const FText& TransactionLabel,
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TUniquePtr<UE::Geometry::FDynamicMeshChange> MeshChangeIn,
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const UE::Geometry::FGroupTopologySelection& OutputSelection,
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bool bGroupTopologyChanged)>
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EmitCurrentMeshChangeAndUpdate;
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/**
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* If an activity starts running, it should use this function to have the host emit an
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* appropriate undoable transaction with the given transaction label.
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*/
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TUniqueFunction<void(const FText& TransactionLabel)> EmitActivityStart;
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/**
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* Gets broadcast when the CurrentMesh is modified by an undo/redo transaction emitted via
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* EmitCurrentMeshChangeAndUpdate. Only activities that issue multiple transactions via
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* EmitCurrentMeshChangeAndUpdate during the same invocation need to use this, since a
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* transaction that ends immediately after the call will not have to deal with the undo.
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*/
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DECLARE_MULTICAST_DELEGATE_OneParam(FOnUndoRedo, bool bGroupTopologyChanged);
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FOnUndoRedo OnUndoRedo;
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};
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