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#rb ryan.schmidt michael.balzer #rnx #jira none #preflight 61f435dd74510448a6865d14 #ROBOMERGE-AUTHOR: lonnie.li #ROBOMERGE-SOURCE: CL 18777332 in //UE5/Release-5.0/... via CL 18780413 via CL 18780555 #ROBOMERGE-BOT: UE5 (Release-Engine-Test -> Main) (v903-18687472) [CL 18780558 by lonnie li in ue5-main branch]
78 lines
2.1 KiB
C++
78 lines
2.1 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 "BaseBehaviors/BehaviorTargetInterfaces.h"
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#include "DynamicMesh/DynamicMeshAABBTree3.h"
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#include "GroupTopology.h"
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#include "BaseTools/SingleSelectionMeshEditingTool.h"
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#include "MeshBoundaryToolBase.generated.h"
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PREDECLARE_USE_GEOMETRY_CLASS(FDynamicMesh3);
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class UPolygonSelectionMechanic;
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class USingleClickInputBehavior;
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/**
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* Base class for tools that do things with a mesh boundary. Provides ability to select mesh boundaries
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* and some other boilerplate code.
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* TODO: We can refactor to make the HoleFiller tool inherit from this.
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*/
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UCLASS()
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class MESHMODELINGTOOLSEXP_API UMeshBoundaryToolBase : public USingleSelectionMeshEditingTool
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{
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GENERATED_BODY()
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public:
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virtual bool HasCancel() const override { return true; }
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virtual bool HasAccept() const override { return true; }
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// CanAccept() needs to be provided by child.
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virtual void Setup() override;
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virtual void OnShutdown(EToolShutdownType ShutdownType) override;
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virtual void Render(IToolsContextRenderAPI* RenderAPI) override;
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protected:
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TSharedPtr<FDynamicMesh3, ESPMode::ThreadSafe> OriginalMesh;
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// Used for hit querying
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UE::Geometry::FDynamicMeshAABBTree3 MeshSpatial;
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UPROPERTY()
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TObjectPtr<UPolygonSelectionMechanic> SelectionMechanic = nullptr;
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// A variant of group topology that considers all triangles one group, so that group edges are boundary
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// edges in the mesh.
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class FBasicTopology : public UE::Geometry::FGroupTopology
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{
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public:
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FBasicTopology(const FDynamicMesh3* Mesh, bool bAutoBuild) :
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FGroupTopology(Mesh, false)
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{
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if (bAutoBuild)
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{
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// Virtual func resolution doesn't work in constructors. Though we're not currently
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// overriding RebuildTopology, let's do the proper thing in case we get copy-pasted
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// somewhere where we do.
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RebuildTopology();
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}
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}
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int GetGroupID(int TriangleID) const override
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{
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return Mesh->IsTriangle(TriangleID) ? 1 : 0;
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}
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};
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TUniquePtr<FBasicTopology> Topology;
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// Override in the child to respond to new loop selections.
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virtual void OnSelectionChanged() {};
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};
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