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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]
73 lines
2.1 KiB
C++
73 lines
2.1 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "FlipPolygon.h"
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#include "EditableMesh.h"
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#include "Framework/Commands/UICommandInfo.h"
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#include "IMeshEditorModeEditingContract.h"
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#include "ScopedTransaction.h"
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#define LOCTEXT_NAMESPACE "MeshEditorMode"
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void UFlipPolygonCommand::RegisterUICommand( FBindingContext* BindingContext )
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{
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UI_COMMAND_EXT( BindingContext, /* Out */ UICommandInfo, "FlipPolygon", "Flip", "Flip the currently selected polygons.", EUserInterfaceActionType::Button, FInputChord( EKeys::F, EModifierKey::Shift ) );
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}
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void UFlipPolygonCommand::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> > MeshesAndPolygons;
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MeshEditorMode.GetSelectedMeshesAndPolygons( MeshesAndPolygons );
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if ( MeshesAndPolygons.Num() == 0 )
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{
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return;
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}
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const FScopedTransaction Transaction( LOCTEXT( "UndoFlipPolygon", "Flip Polygon" ) );
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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.GetSelectedMeshesAndPolygons( MeshesAndPolygons );
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// Deselect the elements because the selection visual needs to be updated
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MeshEditorMode.DeselectMeshElements( MeshesAndPolygons );
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// Flip selected polygons
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for( const auto& MeshAndPolygons : MeshesAndPolygons )
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{
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UEditableMesh* EditableMesh = MeshAndPolygons.Key;
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EditableMesh->StartModification( EMeshModificationType::Final, EMeshTopologyChange::TopologyChange );
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static TArray<FPolygonID> PolygonsToFlip;
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PolygonsToFlip.Reset();
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for( const FMeshElement& PolygonElement : MeshAndPolygons.Value )
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{
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const FPolygonID PolygonID( PolygonElement.ElementAddress.ElementID );
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PolygonsToFlip.Add( PolygonID );
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}
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EditableMesh->FlipPolygons( PolygonsToFlip );
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EditableMesh->EndModification();
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MeshEditorMode.TrackUndo( EditableMesh, EditableMesh->MakeUndo() );
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}
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// Re-select the elements to update the selection visual
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for ( const auto& MeshAndPolygons : MeshesAndPolygons )
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{
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MeshEditorMode.SelectMeshElements( MeshAndPolygons.Value );
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}
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}
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#undef LOCTEXT_NAMESPACE
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