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28d3d740dd
Second batch of remaining Engine copyright updates. #rnx #rb none #jira none [CL 10871196 by Ryan Durand in Main branch]
123 lines
4.2 KiB
C++
123 lines
4.2 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "RemoveVertex.h"
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#include "IMeshEditorModeEditingContract.h"
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#include "IMeshEditorModeUIContract.h"
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#include "Framework/Commands/UICommandInfo.h"
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#include "EditableMesh.h"
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#include "MeshElement.h"
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#include "ScopedTransaction.h"
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#include "Framework/MultiBox/MultiBoxBuilder.h"
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#include "Framework/Commands/UICommandList.h"
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#define LOCTEXT_NAMESPACE "MeshEditorMode"
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void URemoveVertexCommand::RegisterUICommand( FBindingContext* BindingContext )
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{
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UI_COMMAND_EXT( BindingContext, /* Out */ UICommandInfo, "RemoveVertex", "Remove", "Attempts to remove the selected vertex, keeping the polygon intact.", EUserInterfaceActionType::Button, FInputChord( EKeys::BackSpace ) );
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}
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void URemoveVertexCommand::Execute( IMeshEditorModeEditingContract& MeshEditorMode )
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{
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if( MeshEditorMode.GetActiveAction() != NAME_None )
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{
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return;
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}
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static TMap< UEditableMesh*, TArray<FMeshElement> > MeshesWithVerticesToRemove;
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MeshEditorMode.GetSelectedMeshesAndVertices( MeshesWithVerticesToRemove );
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// @todo mesheditor: Only if one vertex is selected, for now. It gets a bit confusing when performing this operation
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// with more than one vertex selected. However, it can be very useful when collapsing away vertices that don't share any
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// common polygons, so we should try to support it.
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if( MeshesWithVerticesToRemove.Num() != 1 )
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{
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const auto& FirstMeshWithVertices = MeshesWithVerticesToRemove.CreateConstIterator();
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if( FirstMeshWithVertices->Get<1>().Num() != 1 )
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{
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return;
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}
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}
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FScopedTransaction Transaction( LOCTEXT( "UndoRemoveVertex", "Remove Vertex" ) );
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MeshEditorMode.CommitSelectedMeshes();
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// Refresh selection (committing may have created a new mesh instance)
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MeshEditorMode.GetSelectedMeshesAndVertices( MeshesWithVerticesToRemove );
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// Deselect the mesh elements before we delete them. This will make sure they become selected again after undo.
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MeshEditorMode.DeselectMeshElements( MeshesWithVerticesToRemove );
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TArray<FMeshElement> MeshElementsToSelect;
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for( const auto& MeshAndElements : MeshesWithVerticesToRemove )
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{
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UEditableMesh* EditableMesh = MeshAndElements.Key;
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EditableMesh->StartModification( EMeshModificationType::Final, EMeshTopologyChange::TopologyChange );
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const TArray<FMeshElement>& VertexElementsToRemove = MeshAndElements.Value;
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for( const FMeshElement& VertexElementToRemove : VertexElementsToRemove )
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{
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const FVertexID VertexID( VertexElementToRemove.ElementAddress.ElementID );
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{
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bool bWasVertexRemoved = false;
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FEdgeID NewEdgeID = FEdgeID::Invalid;
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EditableMesh->TryToRemoveVertex( VertexID, /* Out */ bWasVertexRemoved, /* Out */ NewEdgeID );
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if( bWasVertexRemoved )
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{
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// Select the new edge
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FMeshElement NewEdgeMeshElement;
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{
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NewEdgeMeshElement.Component = VertexElementToRemove.Component;
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NewEdgeMeshElement.ElementAddress = VertexElementToRemove.ElementAddress;
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NewEdgeMeshElement.ElementAddress.ElementType = EEditableMeshElementType::Edge;
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NewEdgeMeshElement.ElementAddress.ElementID = NewEdgeID;
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}
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MeshElementsToSelect.Add( NewEdgeMeshElement );
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}
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else
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{
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// Couldn't remove the vertex
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// @todo mesheditor: Needs good user feedback when this happens
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// @todo mesheditor: If this fails, it will already potentially have created a new instance. To be 100% correct, it needs to do a prepass
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// to determine whether the operation can complete successfully before actually doing it.
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}
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}
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}
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EditableMesh->EndModification();
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MeshEditorMode.TrackUndo( EditableMesh, EditableMesh->MakeUndo() );
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}
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MeshEditorMode.SelectMeshElements( MeshElementsToSelect );
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}
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void URemoveVertexCommand::AddToVRRadialMenuActionsMenu( IMeshEditorModeUIContract& MeshEditorMode, FMenuBuilder& MenuBuilder, TSharedPtr<FUICommandList> CommandList, const FName TEMPHACK_StyleSetName, class UVREditorMode* VRMode )
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{
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if( MeshEditorMode.GetMeshElementSelectionMode() == EEditableMeshElementType::Vertex )
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{
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MenuBuilder.AddMenuEntry(
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LOCTEXT( "VRRemoveVertex", "Remove" ),
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FText(),
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FSlateIcon( TEMPHACK_StyleSetName, "MeshEditorMode.VertexRemove" ),
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MakeUIAction( MeshEditorMode ),
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NAME_None,
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EUserInterfaceActionType::CollapsedButton
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);
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}
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}
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#undef LOCTEXT_NAMESPACE
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