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- Mesh editor commands no longer use class default objects - Tweaked some internal functions to make them more general purpose #rb none [CL 3428862 by Mike Fricker in Dev-Geometry branch]
110 lines
3.2 KiB
C++
110 lines
3.2 KiB
C++
// Copyright 1998-2016 Epic Games, Inc. All Rights Reserved.
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#include "SplitEdge.h"
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#include "IMeshEditorModeEditingContract.h"
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#include "IMeshEditorModeUIContract.h"
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#include "UICommandInfo.h"
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#include "EditableMesh.h"
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#include "MeshElement.h"
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#include "MultiBoxBuilder.h"
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#include "UICommandList.h"
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#include "ViewportInteractor.h"
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#define LOCTEXT_NAMESPACE "MeshEditorMode"
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void USplitEdgeCommand::RegisterUICommand( FBindingContext* BindingContext )
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{
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UI_COMMAND_EXT( BindingContext, /* Out */ UICommandInfo, "SplitEdge", "Split Edge Mode", "Set the primary action to split edges.", EUserInterfaceActionType::RadioButton, FInputChord() );
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}
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bool USplitEdgeCommand::TryStartingToDrag( IMeshEditorModeEditingContract& MeshEditorMode, UViewportInteractor* ViewportInteractor )
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{
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bool bHaveEdge = false;
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// Figure out what to split
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MeshEditorMode.GetSelectedMeshesAndEdges( /* Out */ SplitEdgeMeshesAndEdgesToSplit );
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SplitEdgeSplitList.Reset();
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if( SplitEdgeMeshesAndEdgesToSplit.Num() > 0 )
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{
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for( auto& MeshAndEdges : SplitEdgeMeshesAndEdgesToSplit )
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{
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UEditableMesh* EditableMesh = MeshAndEdges.Key;
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const TArray<FMeshElement>& EdgeElements = MeshAndEdges.Value;
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// Figure out where to split
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FEdgeID ClosestEdgeID = FEdgeID::Invalid;
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float Split = 0.0f;
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const bool bFoundSplit = MeshEditorMode.FindEdgeSplitUnderInteractor( ViewportInteractor, EditableMesh, EdgeElements, /* Out */ ClosestEdgeID, /* Out */ Split );
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if( bFoundSplit )
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{
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SplitEdgeSplitList.Add( Split );
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bHaveEdge = true;
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break;
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}
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}
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}
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return bHaveEdge;
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}
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void USplitEdgeCommand::ApplyDuringDrag( IMeshEditorModeEditingContract& MeshEditorMode, UViewportInteractor* ViewportInteractor )
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{
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if( SplitEdgeMeshesAndEdgesToSplit.Num() > 0 && SplitEdgeSplitList.Num() > 0 )
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{
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MeshEditorMode.DeselectAllMeshElements();
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static TArray<FMeshElement> MeshElementsToSelect;
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MeshElementsToSelect.Reset();
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for( auto& MeshAndEdges : SplitEdgeMeshesAndEdgesToSplit )
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{
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UEditableMesh* EditableMesh = MeshAndEdges.Key;
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verify( !EditableMesh->AnyChangesToUndo() );
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const TArray<FMeshElement>& EdgeElements = MeshAndEdges.Value;
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for( const FMeshElement& EdgeElement : EdgeElements )
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{
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const FEdgeID EdgeID( EdgeElement.ElementAddress.ElementID );
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static TArray<FVertexID> NewVertexIDs;
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NewVertexIDs.Reset();
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EditableMesh->SplitEdge( EdgeID, SplitEdgeSplitList, /* Out */ NewVertexIDs );
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// Select all of the new vertices that were created by splitting the edge
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{
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for( const FVertexID NewVertexID : NewVertexIDs )
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{
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FMeshElement MeshElementToSelect;
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{
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MeshElementToSelect.Component = EdgeElement.Component;
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MeshElementToSelect.ElementAddress.SubMeshAddress = EdgeElement.ElementAddress.SubMeshAddress;
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MeshElementToSelect.ElementAddress.ElementType = EEditableMeshElementType::Vertex;
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MeshElementToSelect.ElementAddress.ElementID = NewVertexID;
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}
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// Queue selection of this new element. We don't want it to be part of the current action.
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MeshElementsToSelect.Add( MeshElementToSelect );
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}
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}
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}
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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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}
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#undef LOCTEXT_NAMESPACE
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