HAxis sos

2018-08-11 16:46:35 +02:00
commit 510654f8a1
480 changed files with 54126 additions and 0 deletions
--- a/Plugins/PolishBuildings/Source/PolishBuildings.Build.cs
+++ b/Plugins/PolishBuildings/Source/PolishBuildings.Build.cs
@@ -0,0 +1,54 @@
+// Copyright 1998-2014 Epic Games, Inc. All Rights Reserved.
+
+using UnrealBuildTool;
+
+public class PolishBuildings : ModuleRules
+{
+	public PolishBuildings(TargetInfo Target)
+	{
+        PrivateIncludePaths.AddRange(
+            new string[] {
+				"Private",
+                "Private/PolishBuildingsTool",
+                "Private/BuildingsProxyTool"
+            }
+        );
+
+        PrivateIncludePathModuleNames.AddRange(
+			new string[] {
+				"AssetRegistry",
+                "ContentBrowser",
+                "Documentation",
+                "LevelEditor",
+                "MeshUtilities",
+                "PropertyEditor",
+                "RawMesh",
+                "WorkspaceMenuStructure"
+			}
+		);
+
+		PrivateDependencyModuleNames.AddRange(
+			new string[] {
+				"Core",
+				"CoreUObject",
+				"Engine",
+                "InputCore",
+				"Slate",
+				"SlateCore",
+                "EditorStyle",
+				"UnrealEd",
+			}
+		);
+
+		DynamicallyLoadedModuleNames.AddRange(
+			new string[] {
+				"AssetRegistry",
+                "ContentBrowser",
+                "Documentation",
+                "LevelEditor",
+                "MeshUtilities",
+                "PropertyEditor"
+			}
+		);
+	}
+}
--- a/Plugins/PolishBuildings/Source/Private/BuildingsProxyTool/BuildingsProxyTool.cpp
+++ b/Plugins/PolishBuildings/Source/Private/BuildingsProxyTool/BuildingsProxyTool.cpp
@@ -0,0 +1,128 @@
+// Copyright 1998-2014 Epic Games, Inc. All Rights Reserved.
+
+#include "PolishBuildingsPrivatePCH.h"
+#include "BuildingsProxyTool.h"
+#include "SBuildingsProxyDialog.h"
+#include "MeshUtilities.h"
+#include "ContentBrowserModule.h"
+#include "AssetRegistryModule.h"
+#include "Engine/StaticMeshActor.h"
+#include "Engine/StaticMesh.h"
+#include "Engine/Selection.h"
+
+
+#define LOCTEXT_NAMESPACE "BuildingsProxyTool"
+
+
+TSharedRef<SWidget> FBuildingsProxyTool::GetWidget()
+{
+	return SNew(SBuildingsProxyDialog, this);
+}
+
+
+FText FBuildingsProxyTool::GetTooltipText() const
+{
+	return LOCTEXT("BuildingsProxyToolTooltip", "Harvest geometry from selected actors and merge them into single mesh.");
+}
+
+
+FString FBuildingsProxyTool::GetDefaultPackageName() const
+{
+	FString PackageName;
+
+	USelection* SelectedActors = GEditor->GetSelectedActors();
+
+	// Iterate through selected actors and find first static mesh asset
+	// Use this static mesh path as destination package name for a merged mesh
+	for (FSelectionIterator Iter(*SelectedActors); Iter; ++Iter)
+	{
+		AActor* Actor = Cast<AActor>(*Iter);
+		if (Actor)
+		{
+			TInlineComponentArray<UStaticMeshComponent*> SMComponets;
+			Actor->GetComponents<UStaticMeshComponent>(SMComponets);
+			for (UStaticMeshComponent* Component : SMComponets)
+			{
+				if (Component->StaticMesh)
+				{
+					PackageName = FPackageName::GetLongPackagePath(Component->StaticMesh->GetOutermost()->GetName());
+					PackageName += FString(TEXT("/PROXY_")) + Component->StaticMesh->GetName();
+					break;
+				}
+			}
+		}
+
+		if (!PackageName.IsEmpty())
+		{
+			break;
+		}
+	}
+
+	if (PackageName.IsEmpty())
+	{
+		PackageName = FPackageName::FilenameToLongPackageName(FPaths::GameContentDir() + TEXT("PROXY"));
+		PackageName = MakeUniqueObjectName(NULL, UPackage::StaticClass(), *PackageName).ToString();
+	}
+
+	return PackageName;
+}
+
+
+bool FBuildingsProxyTool::RunMerge(const FString& PackageName)
+{
+	TArray<AActor*> Actors;
+	TArray<UObject*> AssetsToSync;
+
+	//Get the module for the proxy mesh utilities
+	IMeshUtilities& MeshUtilities = FModuleManager::Get().LoadModuleChecked<IMeshUtilities>("MeshUtilities");
+
+	USelection* SelectedActors = GEditor->GetSelectedActors();
+	for (FSelectionIterator Iter(*SelectedActors); Iter; ++Iter)
+	{
+		AActor* Actor = Cast<AActor>(*Iter);
+		if (Actor)
+		{
+			Actors.Add(Actor);
+		}
+	}
+
+	if (Actors.Num())
+	{
+		GWarn->BeginSlowTask(LOCTEXT("BuildingsProxy_CreatingProxy", "Creating Mesh Proxy"), true);
+		GEditor->BeginTransaction(LOCTEXT("BuildingsProxy_Create", "Creating Mesh Proxy"));
+
+		FVector ProxyLocation = FVector::ZeroVector;
+
+		FCreateProxyDelegate ProxyDelegate;
+		ProxyDelegate.BindLambda(
+			[]( const FGuid Guid, TArray<UObject*>& InAssetsToSync )
+		{
+			//Update the asset registry that a new static mash and material has been created
+			if ( InAssetsToSync.Num() )
+			{
+				FAssetRegistryModule& AssetRegistry = FModuleManager::Get().LoadModuleChecked<FAssetRegistryModule>( "AssetRegistry" );
+				int32 AssetCount = InAssetsToSync.Num();
+				for ( int32 AssetIndex = 0; AssetIndex < AssetCount; AssetIndex++ )
+				{
+					AssetRegistry.AssetCreated( InAssetsToSync[AssetIndex] );
+					GEditor->BroadcastObjectReimported( InAssetsToSync[AssetIndex] );
+				}
+
+				//Also notify the content browser that the new assets exists
+				FContentBrowserModule& ContentBrowserModule = FModuleManager::Get().LoadModuleChecked<FContentBrowserModule>( "ContentBrowser" );
+				ContentBrowserModule.Get().SyncBrowserToAssets( InAssetsToSync, true );
+			}
+		} );
+
+		FGuid JobGuid = FGuid::NewGuid();
+		MeshUtilities.CreateProxyMesh( Actors, ProxySettings, NULL, PackageName, JobGuid, ProxyDelegate );
+
+		GEditor->EndTransaction();
+		GWarn->EndSlowTask();
+	}
+
+	return true;
+}
+
+
+#undef LOCTEXT_NAMESPACE
--- a/Plugins/PolishBuildings/Source/Private/BuildingsProxyTool/BuildingsProxyTool.h
+++ b/Plugins/PolishBuildings/Source/Private/BuildingsProxyTool/BuildingsProxyTool.h
@@ -0,0 +1,25 @@
+// Copyright 1998-2014 Epic Games, Inc. All Rights Reserved.
+#pragma once
+
+#include "IPolishBuildingsTool.h"
+
+/**
+* Mesh Proxy Tool
+*/
+class FBuildingsProxyTool : public IPolishBuildingsTool
+{
+	friend class SBuildingsProxyDialog;
+
+public:
+
+	// IMergeActorsTool interface
+	virtual TSharedRef<SWidget> GetWidget() override;
+	virtual FName GetIconName() const override { return "PolishBuildings.BuildingsProxyTool"; }
+	virtual FText GetTooltipText() const override;
+	virtual FString GetDefaultPackageName() const override;
+	virtual bool RunMerge(const FString& PackageName) override;
+
+private:
+
+	FMeshProxySettings ProxySettings;
+};
--- a/Plugins/PolishBuildings/Source/Private/BuildingsProxyTool/SBuildingsProxyDialog.cpp
+++ b/Plugins/PolishBuildings/Source/Private/BuildingsProxyTool/SBuildingsProxyDialog.cpp
@@ -0,0 +1,614 @@
+// Copyright 1998-2015 Epic Games, Inc. All Rights Reserved.
+
+#include "PolishBuildingsPrivatePCH.h"
+#include "SBuildingsProxyDialog.h"
+#include "Dialogs/DlgPickAssetPath.h"
+#include "SNumericEntryBox.h"
+#include "STextComboBox.h"
+#include "BuildingsProxyTool/BuildingsProxyTool.h"
+
+#define LOCTEXT_NAMESPACE "SBuildingsProxyDialog"
+
+
+void SBuildingsProxyDialog::Construct(const FArguments& InArgs, FBuildingsProxyTool* InTool)
+{
+	Tool = InTool;
+	check(Tool != nullptr);
+
+	CuttingPlaneOptions.Add(MakeShareable(new FString(TEXT("+X"))));
+	CuttingPlaneOptions.Add(MakeShareable(new FString(TEXT("+Y"))));
+	CuttingPlaneOptions.Add(MakeShareable(new FString(TEXT("+Z"))));
+	CuttingPlaneOptions.Add(MakeShareable(new FString(TEXT("-X"))));
+	CuttingPlaneOptions.Add(MakeShareable(new FString(TEXT("-Y"))));
+	CuttingPlaneOptions.Add(MakeShareable(new FString(TEXT("-Z"))));
+
+	TextureResolutionOptions.Add(MakeShareable(new FString(TEXT("64"))));
+	TextureResolutionOptions.Add(MakeShareable(new FString(TEXT("128"))));
+	TextureResolutionOptions.Add(MakeShareable(new FString(TEXT("256"))));
+	TextureResolutionOptions.Add(MakeShareable(new FString(TEXT("512"))));
+	TextureResolutionOptions.Add(MakeShareable(new FString(TEXT("1024"))));
+	TextureResolutionOptions.Add(MakeShareable(new FString(TEXT("2048"))));
+
+	CreateLayout();
+}
+
+BEGIN_SLATE_FUNCTION_BUILD_OPTIMIZATION
+void SBuildingsProxyDialog::CreateLayout()
+{
+	int32 TextureResEntryIndex = FindTextureResolutionEntryIndex( Tool->ProxySettings.MaterialSettings.TextureSize.X );
+	int32 LightMapResEntryIndex = FindTextureResolutionEntryIndex( Tool->ProxySettings.LightMapResolution );
+	TextureResEntryIndex = FMath::Max( TextureResEntryIndex, 0 );
+	LightMapResEntryIndex = FMath::Max( LightMapResEntryIndex, 0 );
+
+	this->ChildSlot
+	[
+		SNew(SVerticalBox)
+			
+		+SVerticalBox::Slot()
+		.AutoHeight()
+		.HAlign(HAlign_Center)
+		.VAlign(VAlign_Center)
+		.Padding(10)
+		[
+			// Simplygon logo
+			SNew(SImage)
+			.Image(FEditorStyle::GetBrush("BuildingsProxy.SimplygonLogo"))
+		]
+			
+		+SVerticalBox::Slot()
+		.AutoHeight()
+		[
+			SNew(SBorder)
+			.BorderImage(FEditorStyle::GetBrush("ToolPanel.GroupBorder"))
+			[
+				// Proxy options
+				SNew(SVerticalBox)
+
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew(SHorizontalBox)
+					+SHorizontalBox::Slot()
+					.FillWidth(0.5f)
+					.VAlign(VAlign_Center)
+					[
+						SNew(STextBlock)
+						.Text(LOCTEXT("OnScreenSizeLabel", "On Screen Size (pixels)"))
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+						.ToolTipText( GetPropertyToolTipText( GET_MEMBER_NAME_CHECKED( FMeshProxySettings, ScreenSize ) ) )
+					]
+					+ SHorizontalBox::Slot()
+					.FillWidth(0.5f)
+					.HAlign(HAlign_Left)
+					.VAlign(VAlign_Center)
+					[
+						SNew(SBox)
+						.HAlign(HAlign_Fill)
+						.MinDesiredWidth(100.0f)
+						.MaxDesiredWidth(100.0f)
+						[
+							SNew(SNumericEntryBox<int32>)
+							.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+							.MinValue(40)
+							.MaxValue(1200)
+							.MinSliderValue(40)
+							.MaxSliderValue(1200)
+							.AllowSpin(true)
+							.Value(this, &SBuildingsProxyDialog::GetScreenSize)
+							.OnValueChanged(this, &SBuildingsProxyDialog::ScreenSizeChanged)
+						]
+					]
+				]
+
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew(SHorizontalBox)
+					+SHorizontalBox::Slot()
+					.FillWidth(0.5f)
+					.VAlign(VAlign_Center)
+					[
+						SNew(STextBlock)
+						.Text(LOCTEXT("MergeDistanceLabel", "Merge Distance (pixels)"))
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+						.ToolTipText( GetPropertyToolTipText( GET_MEMBER_NAME_CHECKED( FMeshProxySettings, MergeDistance ) ) )
+					]
+					+ SHorizontalBox::Slot()
+					.FillWidth(0.5f)
+					.HAlign(HAlign_Left)
+					.VAlign(VAlign_Center)
+					[
+						SNew(SBox)
+						.HAlign(HAlign_Fill)
+						.MinDesiredWidth(100.0f)
+						.MaxDesiredWidth(100.0f)
+						[
+							SNew(SNumericEntryBox<int32>)
+							.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+							.MinValue(0)
+							.MaxValue(300)
+							.MinSliderValue(0)
+							.MaxSliderValue(300)
+							.AllowSpin(true)
+							.Value(this, &SBuildingsProxyDialog::GetMergeDistance)
+							.OnValueChanged(this, &SBuildingsProxyDialog::MergeDistanceChanged)
+						]
+					]
+				]
+
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew(SHorizontalBox)
+					+SHorizontalBox::Slot()
+					.FillWidth(0.5f)
+					.VAlign(VAlign_Center)
+					[
+						SNew(STextBlock)
+						.Text(LOCTEXT("TextureResolutionLabel", "Texture Resolution"))
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+					]
+					+ SHorizontalBox::Slot()
+					.FillWidth(0.5f)
+					.HAlign(HAlign_Left)
+					.VAlign(VAlign_Center)
+					[
+						SNew(STextComboBox)
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+						.OptionsSource(&TextureResolutionOptions)
+						.InitiallySelectedItem( TextureResolutionOptions[TextureResEntryIndex] )
+						.OnSelectionChanged(this, &SBuildingsProxyDialog::SetTextureResolution)
+					]
+				]
+
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew( SHorizontalBox )
+					+ SHorizontalBox::Slot()
+					.FillWidth( 0.5f )
+					.VAlign( VAlign_Center )
+					[
+						SNew(STextBlock)
+						.Text( LOCTEXT( "LightMapResolutionLabel", "LightMap Resolution" ) )
+						.Font( FEditorStyle::GetFontStyle( "StandardDialog.SmallFont" ) )
+						.ToolTipText( GetPropertyToolTipText( GET_MEMBER_NAME_CHECKED( FMeshProxySettings, LightMapResolution ) ) )
+					]
+					+ SHorizontalBox::Slot()
+					.FillWidth( 0.5f )
+					.HAlign( HAlign_Left )
+					.VAlign( VAlign_Center )
+					[
+						SNew( STextComboBox )
+						.Font( FEditorStyle::GetFontStyle( "StandardDialog.SmallFont" ) )
+						.OptionsSource( &TextureResolutionOptions )
+						.InitiallySelectedItem( TextureResolutionOptions[LightMapResEntryIndex] )
+						.OnSelectionChanged( this, &SBuildingsProxyDialog::SetLightMapResolution )
+					]
+				]
+
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew(SHorizontalBox)
+					+SHorizontalBox::Slot()
+					.FillWidth(0.5f)
+					.VAlign(VAlign_Center)
+					.Padding(0.0, 0.0, 3.0, 0.0)
+					[
+						SNew( STextBlock )
+						.Text( LOCTEXT( "HardAngleLabel", "Hard Edge Angle" ) )
+						.Font( FEditorStyle::GetFontStyle( "StandardDialog.SmallFont" ) )
+						.ToolTipText( GetPropertyToolTipText( GET_MEMBER_NAME_CHECKED( FMeshProxySettings, HardAngleThreshold ) ) )
+					]
+					+SHorizontalBox::Slot()
+					.FillWidth(0.5f)
+					.HAlign(HAlign_Left)
+					.VAlign(VAlign_Center)
+					[
+						SNew(SBox)
+						.HAlign(HAlign_Fill)
+						.MinDesiredWidth(100.0f)
+						.MaxDesiredWidth(100.0f)
+						[
+							SNew(SNumericEntryBox<float>)
+							.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+							.MinValue(0.f)
+							.MaxValue(180.f)
+							.MinSliderValue(0.f)
+							.MaxSliderValue(180.f)
+							.AllowSpin(true)
+							.Value(this, &SBuildingsProxyDialog::GetHardAngleThreshold)
+							.OnValueChanged(this, &SBuildingsProxyDialog::HardAngleThresholdChanged)
+							.IsEnabled(this, &SBuildingsProxyDialog::HardAngleThresholdEnabled)
+						]
+					]
+				]
+
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew(SCheckBox)
+					.Type(ESlateCheckBoxType::CheckBox)
+					.IsChecked( this, &SBuildingsProxyDialog::GetRecalculateNormals )
+					.OnCheckStateChanged( this, &SBuildingsProxyDialog::SetRecalculateNormals )
+					.Content()
+					[
+						SNew( STextBlock )
+						.Text( LOCTEXT( "RecalcNormalsLabel", "Recalculate Normals" ) )
+						.Font( FEditorStyle::GetFontStyle( "StandardDialog.SmallFont" ) )
+						.ToolTipText( GetPropertyToolTipText( GET_MEMBER_NAME_CHECKED( FMeshProxySettings, bRecalculateNormals ) ) )
+					]
+				]
+
+				+ SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding( FEditorStyle::GetMargin( "StandardDialog.ContentPadding" ) )
+				[
+					SNew( SCheckBox )
+					.Type( ESlateCheckBoxType::CheckBox )
+					.IsChecked(this, &SBuildingsProxyDialog::GetUseClippingPlane)
+					.OnCheckStateChanged(this, &SBuildingsProxyDialog::SetUseClippingPlane)
+					.Content()
+					[
+						SNew(STextBlock)
+						.Text(LOCTEXT("ClippingPlaneLabel", "Use Clipping Plane"))
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+					]
+				]
+
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew(SHorizontalBox)
+					+SHorizontalBox::Slot()
+					.VAlign(VAlign_Center)
+					.FillWidth(0.5f)
+					[
+						SNew(SHorizontalBox)
+						+SHorizontalBox::Slot()
+						.AutoWidth()
+						[
+							SNew(SBox)
+							.MinDesiredWidth(30)
+							[
+								SNullWidget::NullWidget
+							]
+						]
+						+SHorizontalBox::Slot()
+						.AutoWidth()
+						.HAlign(HAlign_Left)
+						[
+							SNew(STextBlock)
+							.IsEnabled(this, &SBuildingsProxyDialog::UseClippingPlaneEnabled)
+							.Text(LOCTEXT("ClippingAxisLabel", "Clipping Axis"))
+							.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+							.ToolTipText( GetPropertyToolTipText( GET_MEMBER_NAME_CHECKED( FMeshProxySettings, AxisIndex ) ) )
+						]
+					]
+					+SHorizontalBox::Slot()
+					.FillWidth(0.5f)
+					.HAlign(HAlign_Left)
+					.VAlign(VAlign_Center)
+					.Padding(8.0, 0.0, 8.0, 0.0)
+					[
+						SNew(STextComboBox)
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+						.OptionsSource(&CuttingPlaneOptions)
+						.InitiallySelectedItem(CuttingPlaneOptions[0])
+						.OnSelectionChanged(this, &SBuildingsProxyDialog::SetClippingAxis)
+						.IsEnabled(this, &SBuildingsProxyDialog::UseClippingPlaneEnabled)
+					]
+				]
+
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew(SHorizontalBox)
+					+SHorizontalBox::Slot()
+					.FillWidth(0.5f)
+					.VAlign(VAlign_Center)
+					.Padding(0.0, 0.0, 3.0, 0.0)
+					[
+						SNew(SHorizontalBox)
+						+SHorizontalBox::Slot()
+						.AutoWidth()
+						[
+							SNew(SBox)
+							.MinDesiredWidth(30)
+							[
+								SNullWidget::NullWidget
+							]
+						]
+						+SHorizontalBox::Slot()
+						.HAlign(HAlign_Left)
+						.AutoWidth()
+						[
+							SNew(STextBlock)
+							.Text(LOCTEXT("PlaneLevelLabel", "Plane level"))
+							.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+							.IsEnabled(this, &SBuildingsProxyDialog::UseClippingPlaneEnabled)
+							.ToolTipText( GetPropertyToolTipText( GET_MEMBER_NAME_CHECKED( FMeshProxySettings, ClippingLevel ) ) )
+						]
+					]
+					+SHorizontalBox::Slot()
+					.FillWidth(0.5f)
+					.HAlign(HAlign_Left)
+					[
+						SNew(SBox)
+						.HAlign(HAlign_Fill)
+						.MinDesiredWidth(100.0f)
+						.MaxDesiredWidth(100.0f)
+						[
+							SNew(SNumericEntryBox<float>)
+							.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+							.Value(this, &SBuildingsProxyDialog::GetClippingLevel)
+							.OnValueChanged(this, &SBuildingsProxyDialog::ClippingLevelChanged)
+							.IsEnabled(this, &SBuildingsProxyDialog::UseClippingPlaneEnabled)
+						]
+					]
+				]
+
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew(SCheckBox)
+					.Type(ESlateCheckBoxType::CheckBox)
+					.IsChecked(this, &SBuildingsProxyDialog::GetExportNormalMap)
+					.OnCheckStateChanged(this, &SBuildingsProxyDialog::SetExportNormalMap)
+					.Content()
+					[
+						SNew(STextBlock)
+						.Text(LOCTEXT("ExportNormalMapLabel", "Export Normal Map"))
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+					]
+				]
+
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew(SCheckBox)
+					.Type(ESlateCheckBoxType::CheckBox)
+					.IsChecked(this, &SBuildingsProxyDialog::GetExportMetallicMap)
+					.OnCheckStateChanged(this, &SBuildingsProxyDialog::SetExportMetallicMap)
+					.Content()
+					[
+						SNew(STextBlock)
+						.Text(LOCTEXT("ExportMetallicMapLabel", "Export Metallic Map"))
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+					]
+				]
+
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew(SCheckBox)
+					.Type(ESlateCheckBoxType::CheckBox)
+					.IsChecked(this, &SBuildingsProxyDialog::GetExportRoughnessMap)
+					.OnCheckStateChanged(this, &SBuildingsProxyDialog::SetExportRoughnessMap)
+					.Content()
+					[
+						SNew(STextBlock)
+						.Text(LOCTEXT("ExportRoughnessMapLabel", "Export Roughness Map"))
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+					]
+				]
+
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew(SCheckBox)
+					.Type(ESlateCheckBoxType::CheckBox)
+					.IsChecked(this, &SBuildingsProxyDialog::GetExportSpecularMap)
+					.OnCheckStateChanged(this, &SBuildingsProxyDialog::SetExportSpecularMap)
+					.Content()
+					[
+						SNew(STextBlock)
+						.Text(LOCTEXT("ExportSpecularMapLabel", "Export Specular Map"))
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+					]
+				]
+			]
+		]
+	];
+}
+END_SLATE_FUNCTION_BUILD_OPTIMIZATION
+
+int32 SBuildingsProxyDialog::FindTextureResolutionEntryIndex( int32 InResolution ) const
+{
+	FString ResolutionStr = TTypeToString<int32>::ToString( InResolution );
+
+	int32 Result = TextureResolutionOptions.IndexOfByPredicate( [&]( const TSharedPtr<FString>& Entry )
+	{
+		return ( ResolutionStr == *Entry );
+	} );
+
+	return Result;
+}
+
+FText SBuildingsProxyDialog::GetPropertyToolTipText( const FName& PropertyName ) const
+{
+	UProperty* Property = FMeshProxySettings::StaticStruct()->FindPropertyByName( PropertyName );
+	if ( Property )
+	{
+		return Property->GetToolTipText();
+	}
+
+	return FText::GetEmpty();
+}
+
+//Screen size
+TOptional<int32> SBuildingsProxyDialog::GetScreenSize() const
+{
+	return Tool->ProxySettings.ScreenSize;
+}
+
+void SBuildingsProxyDialog::ScreenSizeChanged(int32 NewValue)
+{
+	Tool->ProxySettings.ScreenSize = NewValue;
+}
+
+//Recalculate normals
+ECheckBoxState SBuildingsProxyDialog::GetRecalculateNormals() const
+{
+	return Tool->ProxySettings.bRecalculateNormals ? ECheckBoxState::Checked: ECheckBoxState::Unchecked;
+}
+
+void SBuildingsProxyDialog::SetRecalculateNormals(ECheckBoxState NewValue)
+{
+	Tool->ProxySettings.bRecalculateNormals = (NewValue == ECheckBoxState::Checked);
+}
+
+//Hard Angle Threshold
+bool SBuildingsProxyDialog::HardAngleThresholdEnabled() const
+{
+	if(Tool->ProxySettings.bRecalculateNormals)
+	{
+		return true;
+	}
+
+	return false;
+}
+
+TOptional<float> SBuildingsProxyDialog::GetHardAngleThreshold() const
+{
+	return Tool->ProxySettings.HardAngleThreshold;
+}
+
+void SBuildingsProxyDialog::HardAngleThresholdChanged(float NewValue)
+{
+	Tool->ProxySettings.HardAngleThreshold = NewValue;
+}
+
+//Merge Distance
+TOptional<int32> SBuildingsProxyDialog::GetMergeDistance() const
+{
+	return Tool->ProxySettings.MergeDistance;
+}
+
+void SBuildingsProxyDialog::MergeDistanceChanged(int32 NewValue)
+{
+	Tool->ProxySettings.MergeDistance = NewValue;
+}
+
+//Clipping Plane
+ECheckBoxState SBuildingsProxyDialog::GetUseClippingPlane() const
+{
+	return Tool->ProxySettings.bUseClippingPlane ? ECheckBoxState::Checked: ECheckBoxState::Unchecked;
+}
+
+void SBuildingsProxyDialog::SetUseClippingPlane(ECheckBoxState NewValue)
+{
+	Tool->ProxySettings.bUseClippingPlane = (NewValue == ECheckBoxState::Checked);
+}
+
+bool SBuildingsProxyDialog::UseClippingPlaneEnabled() const
+{
+	if(Tool->ProxySettings.bUseClippingPlane)
+	{
+		return true;
+	}
+	return false;
+}
+
+void SBuildingsProxyDialog::SetClippingAxis(TSharedPtr<FString> NewSelection, ESelectInfo::Type SelectInfo )
+{
+	//This is a ugly hack, but it solves the problem for now
+	int32 AxisIndex = CuttingPlaneOptions.Find(NewSelection);
+	//FMessageDialog::Debugf(*FString::Printf(TEXT("%d"), AxisIndex ));
+	if(AxisIndex < 3)
+	{
+		Tool->ProxySettings.bPlaneNegativeHalfspace = false;
+		Tool->ProxySettings.AxisIndex = AxisIndex;
+		return;
+	}
+	else
+	{
+		Tool->ProxySettings.bPlaneNegativeHalfspace = true;
+		Tool->ProxySettings.AxisIndex = AxisIndex - 3;
+		return;
+	}
+}
+
+TOptional<float> SBuildingsProxyDialog::GetClippingLevel() const
+{
+	return Tool->ProxySettings.ClippingLevel;
+}
+
+void SBuildingsProxyDialog::ClippingLevelChanged(float NewValue)
+{
+	Tool->ProxySettings.ClippingLevel = NewValue;
+}
+
+//Texture Resolution
+void SBuildingsProxyDialog::SetTextureResolution(TSharedPtr<FString> NewSelection, ESelectInfo::Type SelectInfo)
+{
+	int32 Resolution = 512;
+	TTypeFromString<int32>::FromString(Resolution, **NewSelection);
+	FIntPoint TextureSize(Resolution, Resolution);
+	
+	Tool->ProxySettings.MaterialSettings.TextureSize = TextureSize;
+}
+
+void SBuildingsProxyDialog::SetLightMapResolution( TSharedPtr<FString> NewSelection, ESelectInfo::Type SelectInfo )
+{
+	int32 Resolution = 256;
+	TTypeFromString<int32>::FromString( Resolution, **NewSelection );
+
+	Tool->ProxySettings.LightMapResolution = Resolution;
+}
+
+ECheckBoxState SBuildingsProxyDialog::GetExportNormalMap() const
+{
+	return Tool->ProxySettings.MaterialSettings.bNormalMap ? ECheckBoxState::Checked : ECheckBoxState::Unchecked;
+}
+
+void SBuildingsProxyDialog::SetExportNormalMap(ECheckBoxState NewValue)
+{
+	Tool->ProxySettings.MaterialSettings.bNormalMap = ( NewValue == ECheckBoxState::Checked );
+}
+
+ECheckBoxState SBuildingsProxyDialog::GetExportMetallicMap() const
+{
+	return Tool->ProxySettings.MaterialSettings.bMetallicMap ? ECheckBoxState::Checked : ECheckBoxState::Unchecked;
+}
+
+void SBuildingsProxyDialog::SetExportMetallicMap(ECheckBoxState NewValue)
+{
+	Tool->ProxySettings.MaterialSettings.bMetallicMap = ( NewValue == ECheckBoxState::Checked );
+}
+
+ECheckBoxState SBuildingsProxyDialog::GetExportRoughnessMap() const
+{
+	return Tool->ProxySettings.MaterialSettings.bRoughnessMap ? ECheckBoxState::Checked : ECheckBoxState::Unchecked;
+}
+
+void SBuildingsProxyDialog::SetExportRoughnessMap(ECheckBoxState NewValue)
+{
+	Tool->ProxySettings.MaterialSettings.bRoughnessMap = ( NewValue == ECheckBoxState::Checked );
+}
+
+ECheckBoxState SBuildingsProxyDialog::GetExportSpecularMap() const
+{
+	return Tool->ProxySettings.MaterialSettings.bSpecularMap ? ECheckBoxState::Checked : ECheckBoxState::Unchecked;
+}
+
+void SBuildingsProxyDialog::SetExportSpecularMap(ECheckBoxState NewValue)
+{
+	Tool->ProxySettings.MaterialSettings.bSpecularMap = ( NewValue == ECheckBoxState::Checked );
+}
+
+
+#undef LOCTEXT_NAMESPACE
--- a/Plugins/PolishBuildings/Source/Private/BuildingsProxyTool/SBuildingsProxyDialog.h
+++ b/Plugins/PolishBuildings/Source/Private/BuildingsProxyTool/SBuildingsProxyDialog.h
@@ -0,0 +1,75 @@
+// Copyright 1998-2015 Epic Games, Inc. All Rights Reserved.
+
+#pragma once
+
+class FBuildingsProxyTool;
+
+/*-----------------------------------------------------------------------------
+	SBuildingsProxyDialog
+-----------------------------------------------------------------------------*/
+class SBuildingsProxyDialog : public SCompoundWidget
+{
+public:
+	SLATE_BEGIN_ARGS(SBuildingsProxyDialog)
+	{
+	}
+	SLATE_END_ARGS()
+
+public:
+	/** SWidget functions */
+	void Construct(const FArguments& InArgs, FBuildingsProxyTool* InTool);
+
+protected:
+	/** ScreenSize accessors */
+	TOptional<int32> GetScreenSize() const;
+	void ScreenSizeChanged(int32 NewValue);		//used with editable text block (Simplygon)
+
+	/** Recalculate Normals accessors */
+	ECheckBoxState GetRecalculateNormals() const;
+	void SetRecalculateNormals(ECheckBoxState NewValue);
+
+	/** Hard Angle Threshold accessors */
+	TOptional<float> GetHardAngleThreshold() const;
+	bool HardAngleThresholdEnabled() const;
+	void HardAngleThresholdChanged(float NewValue);
+
+	/** Hole filling accessors */
+	TOptional<int32> GetMergeDistance() const;
+	void MergeDistanceChanged(int32 NewValue);
+
+	/** Clipping Plane accessors */
+	ECheckBoxState GetUseClippingPlane() const;
+	void SetUseClippingPlane(ECheckBoxState NewValue);
+	bool UseClippingPlaneEnabled() const;
+	void SetClippingAxis(TSharedPtr<FString> NewSelection, ESelectInfo::Type SelectInfo);
+	TOptional<float> GetClippingLevel() const;
+	void ClippingLevelChanged(float NewValue);
+
+	/** TextureResolution accessors */
+	void SetTextureResolution(TSharedPtr<FString> NewSelection, ESelectInfo::Type SelectInfo);
+	void SetLightMapResolution( TSharedPtr<FString> NewSelection, ESelectInfo::Type SelectInfo );
+
+	/** Export material properties acessors **/
+	ECheckBoxState GetExportNormalMap() const;
+	void SetExportNormalMap(ECheckBoxState NewValue);
+	ECheckBoxState GetExportMetallicMap() const;
+	void SetExportMetallicMap(ECheckBoxState NewValue);
+	ECheckBoxState GetExportRoughnessMap() const;
+	void SetExportRoughnessMap(ECheckBoxState NewValue);
+	ECheckBoxState GetExportSpecularMap() const;
+	void SetExportSpecularMap(ECheckBoxState NewValue);
+
+private:
+	/** Creates the geometry mode controls */
+	void CreateLayout();
+
+	int32 FindTextureResolutionEntryIndex( int32 InResolution ) const;
+	FText GetPropertyToolTipText( const FName& PropertyName ) const;
+
+private:
+	FBuildingsProxyTool* Tool;
+
+	TArray< TSharedPtr<FString> >	CuttingPlaneOptions;
+	TArray< TSharedPtr<FString> >	TextureResolutionOptions;
+};
+
--- a/Plugins/PolishBuildings/Source/Private/PolishBuildingsModule.cpp
+++ b/Plugins/PolishBuildings/Source/Private/PolishBuildingsModule.cpp
@@ -0,0 +1,162 @@
+// Copyright 1998-2014 Epic Games, Inc. All Rights Reserved.
+
+#include "PolishBuildingsPrivatePCH.h"
+#include "SPolishBuildingsToolbar.h"
+#include "ModuleManager.h"
+#include "WorkspaceMenuStructureModule.h"
+#include "PolishBuildingsTool.h"
+#include "BuildingsProxyTool.h"
+#include "SDockTab.h"
+
+#define LOCTEXT_NAMESPACE "PolishBuildingsModule"
+
+
+static const FName PolishBuildingsTabName = FName("PolishBuildings");
+
+/**
+ * Merge Actors module
+ */
+class FPolishBuildingsModule : public IPolishBuildingsModule
+{
+public:
+
+	/**
+	 * Called right after the module DLL has been loaded and the module object has been created
+	 */
+	virtual void StartupModule() override;
+
+	/**
+	 * Called before the module is unloaded, right before the module object is destroyed.
+	 */
+	virtual void ShutdownModule() override;
+
+	/**
+	 * Register an IPolishBuildingsTool with the module, passing ownership to it
+	 */
+	virtual bool RegisterPolishBuildingsTool(TUniquePtr<IPolishBuildingsTool> Tool) override;
+
+	/**
+	 * Unregister an IPolishBuildingsTool with the module
+	 */
+	virtual bool UnregisterPolishBuildingsTool(IPolishBuildingsTool* Tool) override;
+
+
+private:
+
+	/** Creates the dock tab widget used by the tab manager */
+	TSharedRef<SDockTab> CreatePolishBuildingsTab(const FSpawnTabArgs& Args);
+
+private:
+
+	/** Pointer to the toolbar widget */
+	TWeakPtr<SPolishBuildingsToolbar> PolishBuildingsToolbarPtr;
+
+	/** List of registered PolishBuildingsTool instances */
+	TArray<TUniquePtr<IPolishBuildingsTool>> PolishBuildingsTools;
+};
+
+IMPLEMENT_MODULE(FPolishBuildingsModule, PolishBuildings);
+
+
+TSharedRef<SDockTab> FPolishBuildingsModule::CreatePolishBuildingsTab(const FSpawnTabArgs& Args)
+{
+	// Build array of PolishBuildingsTool raw pointers
+	TArray<IPolishBuildingsTool*> ToolsToRegister;
+	for (const auto& MergeActorTool : PolishBuildingsTools)
+	{
+		check(MergeActorTool.Get() != nullptr);
+		ToolsToRegister.Add(MergeActorTool.Get());
+	}
+
+	// Construct toolbar widget
+	TSharedRef<SPolishBuildingsToolbar> PolishBuildingsToolbar =
+		SNew(SPolishBuildingsToolbar)
+		.ToolsToRegister(ToolsToRegister);
+
+	// Construct dock tab
+	TSharedRef<SDockTab> DockTab =
+		SNew(SDockTab)
+		.TabRole(ETabRole::NomadTab)
+		[
+			PolishBuildingsToolbar
+		];
+
+	// Keep weak pointer to toolbar widget
+	PolishBuildingsToolbarPtr = PolishBuildingsToolbar;
+
+	return DockTab;
+}
+
+
+void FPolishBuildingsModule::StartupModule()
+{
+	FGlobalTabmanager::Get()->RegisterNomadTabSpawner(PolishBuildingsTabName, FOnSpawnTab::CreateRaw(this, &FPolishBuildingsModule::CreatePolishBuildingsTab))
+		.SetDisplayName(LOCTEXT("TabTitle", "Polish Buildings"))
+		.SetTooltipText(LOCTEXT("TooltipText", "Open the Polish Buildings tab."))
+		.SetGroup(WorkspaceMenu::GetMenuStructure().GetLevelEditorCategory())
+		.SetIcon(FSlateIcon(FEditorStyle::GetStyleSetName(), "ClassViewer.TabIcon"));
+		// This is still experimental in the editor, so it's added specifically in FMainMenu for now.
+		// When no longer experimental, remove the below.
+		//.SetAutoGenerateMenuEntry(false);
+
+	// Register built-in merging tools straight away
+	ensure(RegisterPolishBuildingsTool(MakeUnique<FPolishBuildingsTool>()));
+
+	IMeshUtilities* MeshUtilities = FModuleManager::Get().LoadModulePtr<IMeshUtilities>("MeshUtilities");
+	if (MeshUtilities != nullptr && MeshUtilities->GetMeshMergingInterface() != nullptr)
+	{
+		// Only register BuildingsProxyTool if Simplygon is available
+		ensure(RegisterPolishBuildingsTool(MakeUnique<FBuildingsProxyTool>()));
+	}
+}
+
+
+void FPolishBuildingsModule::ShutdownModule()
+{
+	if (FSlateApplication::IsInitialized())
+	{
+		FGlobalTabmanager::Get()->UnregisterNomadTabSpawner(PolishBuildingsTabName);
+	}
+}
+
+
+bool FPolishBuildingsModule::RegisterPolishBuildingsTool(TUniquePtr<IPolishBuildingsTool> Tool)
+{
+	if (Tool.Get() != nullptr && !PolishBuildingsTools.Contains(MoveTemp(Tool)))
+	{
+		PolishBuildingsTools.Add(MoveTemp(Tool));
+		
+		// If a tool is added while the toolbar widget is active, update it accordingly
+		TSharedPtr<SPolishBuildingsToolbar> PolishBuildingsToolbar = PolishBuildingsToolbarPtr.Pin();
+		if (PolishBuildingsToolbar.IsValid())
+		{
+			PolishBuildingsToolbar->AddTool(Tool.Get());
+		}
+
+		return true;
+	}
+
+	return false;
+}
+
+
+bool FPolishBuildingsModule::UnregisterPolishBuildingsTool(IPolishBuildingsTool* Tool)
+{
+	if (Tool != nullptr)
+	{
+		if (PolishBuildingsTools.RemoveAll([=](const TUniquePtr<IPolishBuildingsTool>& Ptr) { return Ptr.Get() == Tool; }) > 0)
+		{
+			TSharedPtr<SPolishBuildingsToolbar> PolishBuildingsToolbar = PolishBuildingsToolbarPtr.Pin();
+			if (PolishBuildingsToolbar.IsValid())
+			{
+				PolishBuildingsToolbar->RemoveTool(Tool);
+			}
+
+			return true;
+		}
+	}
+	return false;
+}
+
+
+#undef LOCTEXT_NAMESPACE
--- a/Plugins/PolishBuildings/Source/Private/PolishBuildingsPrivatePCH.h
+++ b/Plugins/PolishBuildings/Source/Private/PolishBuildingsPrivatePCH.h
@@ -0,0 +1,6 @@
+// Copyright 1998-2014 Epic Games, Inc. All Rights Reserved.
+
+#pragma once
+
+#include "UnrealEd.h"
+#include "IPolishBuildingsModule.h"
--- a/Plugins/PolishBuildings/Source/Private/PolishBuildingsTool/PolishBuildingsTool.cpp
+++ b/Plugins/PolishBuildings/Source/Private/PolishBuildingsTool/PolishBuildingsTool.cpp
@@ -0,0 +1,149 @@
+// Copyright 1998-2014 Epic Games, Inc. All Rights Reserved.
+
+#include "PolishBuildingsPrivatePCH.h"
+#include "PolishBuildingsTool.h"
+#include "SPolishBuildingsDialog.h"
+#include "PropertyEditorModule.h"
+#include "Engine/TextureLODSettings.h"
+#include "RawMesh.h"
+#include "Engine/StaticMeshActor.h"
+#include "Engine/StaticMesh.h"
+#include "Engine/Selection.h"
+#include "SystemSettings.h"
+#include "Engine/TextureLODSettings.h"
+#include "ContentBrowserModule.h"
+#include "AssetRegistryModule.h"
+#include "ScopedTransaction.h"
+
+#define LOCTEXT_NAMESPACE "PolishBuildingsTool"
+
+
+FPolishBuildingsTool::FPolishBuildingsTool()
+	: bReplaceSourceActors(false)
+	, bExportSpecificLOD(false)
+	, ExportLODIndex(0)
+{}
+
+
+TSharedRef<SWidget> FPolishBuildingsTool::GetWidget()
+{
+	return SNew(SPolishBuildingsDialog, this);
+}
+
+
+FText FPolishBuildingsTool::GetTooltipText() const
+{
+	return LOCTEXT("PolishBuildingsToolTooltip", "Harvest geometry from selected actors and merge grouping them by materials.");
+}
+
+
+FString FPolishBuildingsTool::GetDefaultPackageName() const
+{
+	FString PackageName = FPackageName::FilenameToLongPackageName(FPaths::GameContentDir() + TEXT("SM_MERGED"));
+
+	USelection* SelectedActors = GEditor->GetSelectedActors();
+	// Iterate through selected actors and find first static mesh asset
+	// Use this static mesh path as destination package name for a merged mesh
+	for (FSelectionIterator Iter(*SelectedActors); Iter; ++Iter)
+	{
+		AActor* Actor = Cast<AActor>(*Iter);
+		if (Actor)
+		{
+			FString ActorName = Actor->GetName();
+			PackageName = FString::Printf(TEXT("%s_%s"), *PackageName, *ActorName);
+			break;
+		}
+	}
+
+	if (PackageName.IsEmpty())
+	{
+		PackageName = MakeUniqueObjectName(NULL, UPackage::StaticClass(), *PackageName).ToString();
+	}
+
+	return PackageName;
+}
+
+
+bool FPolishBuildingsTool::RunMerge(const FString& PackageName)
+{
+	IMeshUtilities& MeshUtilities = FModuleManager::Get().LoadModuleChecked<IMeshUtilities>("MeshUtilities");
+	USelection* SelectedActors = GEditor->GetSelectedActors();
+	TArray<AActor*> Actors;
+	TArray<ULevel*> UniqueLevels;
+	for (FSelectionIterator Iter(*SelectedActors); Iter; ++Iter)
+	{
+		AActor* Actor = Cast<AActor>(*Iter);
+		if (Actor)
+		{
+			Actors.Add(Actor);
+			UniqueLevels.AddUnique(Actor->GetLevel());
+		}
+	}
+
+	// This restriction is only for replacement of selected actors with merged mesh actor
+	if (UniqueLevels.Num() > 1 && bReplaceSourceActors)
+	{
+		FText Message = NSLOCTEXT("UnrealEd", "FailedToPolishBuildingsSublevels_Msg", "The selected actors should be in the same level");
+		OpenMsgDlgInt(EAppMsgType::Ok, Message, NSLOCTEXT("UnrealEd", "FailedToPolishBuildings_Title", "Unable to merge actors"));
+		return false;
+	}
+
+	int32 TargetMeshLOD = bExportSpecificLOD ? ExportLODIndex : INDEX_NONE;
+	FVector MergedActorLocation;
+	TArray<UObject*> AssetsToSync;
+	// Merge...
+	{
+		FScopedSlowTask SlowTask(0, LOCTEXT("MergingActorsSlowTask", "Merging actors..."));
+		SlowTask.MakeDialog();
+		
+		MeshUtilities.MergeActors(Actors, MergingSettings, NULL, PackageName, TargetMeshLOD, AssetsToSync, MergedActorLocation);
+	}
+
+	if (AssetsToSync.Num())
+	{
+		FAssetRegistryModule& AssetRegistry = FModuleManager::Get().LoadModuleChecked<FAssetRegistryModule>("AssetRegistry");
+		int32 AssetCount = AssetsToSync.Num();
+		for (int32 AssetIndex = 0; AssetIndex < AssetCount; AssetIndex++)
+		{
+			AssetRegistry.AssetCreated(AssetsToSync[AssetIndex]);
+			GEditor->BroadcastObjectReimported(AssetsToSync[AssetIndex]);
+		}
+
+		//Also notify the content browser that the new assets exists
+		FContentBrowserModule& ContentBrowserModule = FModuleManager::Get().LoadModuleChecked<FContentBrowserModule>("ContentBrowser");
+		ContentBrowserModule.Get().SyncBrowserToAssets(AssetsToSync, true);
+
+		// Place new mesh in the world
+		if (bReplaceSourceActors)
+		{
+			UStaticMesh* MergedMesh = nullptr;
+			if (AssetsToSync.FindItemByClass(&MergedMesh))
+			{
+				const FScopedTransaction Transaction(LOCTEXT("PlaceMergedActor", "Place Merged Actor"));
+				UniqueLevels[0]->Modify();
+
+				UWorld* World = UniqueLevels[0]->OwningWorld;
+				FActorSpawnParameters Params;
+				Params.OverrideLevel = UniqueLevels[0];
+				FRotator MergedActorRotation(ForceInit);
+								
+				AStaticMeshActor* MergedActor = World->SpawnActor<AStaticMeshActor>(MergedActorLocation, MergedActorRotation, Params);
+				MergedActor->GetStaticMeshComponent()->StaticMesh = MergedMesh;
+				MergedActor->SetActorLabel(AssetsToSync[0]->GetName());
+
+				// Remove source actors
+				/*
+				for (AActor* Actor : Actors)
+				{
+					Actor->Destroy();
+				}
+				*/
+			}
+		}
+	}
+
+	return true;
+}
+
+
+#undef LOCTEXT_NAMESPACE
--- a/Plugins/PolishBuildings/Source/Private/PolishBuildingsTool/PolishBuildingsTool.h
+++ b/Plugins/PolishBuildings/Source/Private/PolishBuildingsTool/PolishBuildingsTool.h
@@ -0,0 +1,35 @@
+// Copyright 1998-2014 Epic Games, Inc. All Rights Reserved.
+#pragma once
+
+#include "IPolishBuildingsTool.h"
+#include "MeshUtilities.h"
+
+/**
+ * Mesh Merging Tool
+ */
+class FPolishBuildingsTool : public IPolishBuildingsTool
+{
+	friend class SPolishBuildingsDialog;
+
+public:
+
+	FPolishBuildingsTool();
+
+	// IPolishBuildingsTool interface
+	virtual TSharedRef<SWidget> GetWidget() override;
+	virtual FName GetIconName() const override { return "PolishBuildings.PolishBuildingsTool"; }
+	virtual FText GetTooltipText() const override;
+	virtual FString GetDefaultPackageName() const override;
+	virtual bool RunMerge(const FString& PackageName) override;
+
+private:
+
+	/** Current mesh merging settings */
+	FMeshMergingSettings MergingSettings;
+
+	/** Whether to replace source actors with a merged actor in the world */
+	bool bReplaceSourceActors;
+
+	bool bExportSpecificLOD;
+	int32 ExportLODIndex;
+};
--- a/Plugins/PolishBuildings/Source/Private/PolishBuildingsTool/SPolishBuildingsDialog.cpp
+++ b/Plugins/PolishBuildings/Source/Private/PolishBuildingsTool/SPolishBuildingsDialog.cpp
@@ -0,0 +1,520 @@
+// Copyright 1998-2015 Epic Games, Inc. All Rights Reserved.
+
+#include "PolishBuildingsPrivatePCH.h"
+#include "SPolishBuildingsDialog.h"
+#include "Dialogs/DlgPickAssetPath.h"
+#include "STextComboBox.h"
+#include "RawMesh.h"
+#include "PolishBuildingsTool/PolishBuildingsTool.h"
+
+#define LOCTEXT_NAMESPACE "SPolishBuildingsDialog"
+
+//////////////////////////////////////////////////////////////////////////
+// SPolishBuildingsDialog
+
+SPolishBuildingsDialog::SPolishBuildingsDialog()
+{
+}
+
+BEGIN_SLATE_FUNCTION_BUILD_OPTIMIZATION
+void SPolishBuildingsDialog::Construct(const FArguments& InArgs, FPolishBuildingsTool* InTool)
+{
+	Tool = InTool;
+	check(Tool != nullptr);
+
+	// Setup available resolutions for lightmap and merged materials
+	const int32 MinTexResolution = 1 << FTextureLODGroup().MinLODMipCount;
+	const int32 MaxTexResolution = 1 << FTextureLODGroup().MaxLODMipCount;
+	for (int32 TexRes = MinTexResolution; TexRes <= MaxTexResolution; TexRes*=2)
+	{
+		LightMapResolutionOptions.Add(MakeShareable(new FString(TTypeToString<int32>::ToString(TexRes))));
+		MergedMaterialResolutionOptions.Add(MakeShareable(new FString(TTypeToString<int32>::ToString(TexRes))));
+	}
+
+	Tool->MergingSettings.TargetLightMapResolution = FMath::Clamp(Tool->MergingSettings.TargetLightMapResolution, MinTexResolution, MaxTexResolution);
+	Tool->MergingSettings.MaterialSettings.TextureSize.X = FMath::Clamp( Tool->MergingSettings.MaterialSettings.TextureSize.X, MinTexResolution, MaxTexResolution );
+	Tool->MergingSettings.MaterialSettings.TextureSize.Y = FMath::Clamp( Tool->MergingSettings.MaterialSettings.TextureSize.Y, MinTexResolution, MaxTexResolution );
+
+	// Setup available UV channels for an atlased lightmap
+	for (int32 Index = 0; Index < MAX_MESH_TEXTURE_COORDS; Index++)
+	{
+		LightMapChannelOptions.Add(MakeShareable(new FString(TTypeToString<int32>::ToString(Index))));
+	}
+
+	for (int32 Index = 0; Index < MAX_STATIC_MESH_LODS; Index++)
+	{
+		ExportLODOptions.Add(MakeShareable(new FString(TTypeToString<int32>::ToString(Index))));
+	}
+
+	// Create widget layout
+	this->ChildSlot
+	[
+		SNew(SVerticalBox)
+
+		+SVerticalBox::Slot()
+		.AutoHeight()
+		.Padding(0,2,0,0)
+		[
+			// Lightmap settings
+			SNew(SBorder)
+			.BorderImage(FEditorStyle::GetBrush("ToolPanel.GroupBorder"))
+			[
+				SNew(SVerticalBox)
+									
+				// Enable atlasing
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew(SCheckBox)
+					.Type(ESlateCheckBoxType::CheckBox)
+					.IsChecked(this, &SPolishBuildingsDialog::GetGenerateLightmapUV)
+					.OnCheckStateChanged(this, &SPolishBuildingsDialog::SetGenerateLightmapUV)
+					.Content()
+					[
+						SNew(STextBlock)
+						.Text(LOCTEXT("AtlasLightmapUVLabel", "Generate Lightmap UVs"))
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+					]
+				]
+					
+				// Target lightmap channel / Max lightmap resolution
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew(SHorizontalBox)
+
+					+SHorizontalBox::Slot()
+					.AutoWidth()
+					.VAlign(VAlign_Center)
+					[
+						SNew(STextBlock)
+						.IsEnabled(this, &SPolishBuildingsDialog::IsLightmapChannelEnabled)
+						.Text(LOCTEXT("TargetLightMapChannelLabel", "Target Channel:"))
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+					]
+
+					+SHorizontalBox::Slot()
+					.AutoWidth()
+					.VAlign(VAlign_Center)
+					.Padding(4,0,4,0)
+					[
+						SNew(STextComboBox)
+						.IsEnabled( this, &SPolishBuildingsDialog::IsLightmapChannelEnabled )
+						.OptionsSource(&LightMapChannelOptions)
+						.InitiallySelectedItem(LightMapChannelOptions[Tool->MergingSettings.TargetLightMapUVChannel])
+						.OnSelectionChanged(this, &SPolishBuildingsDialog::SetTargetLightMapChannel)
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+					]
+
+					+SHorizontalBox::Slot()
+					.AutoWidth()
+					.VAlign(VAlign_Center)
+					[
+						SNew(STextBlock)
+						.IsEnabled(this, &SPolishBuildingsDialog::IsLightmapChannelEnabled)
+						.Text(LOCTEXT("TargetLightMapResolutionLabel", "Target Resolution:"))
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+					]
+												
+					+SHorizontalBox::Slot()
+					.AutoWidth()
+					.VAlign(VAlign_Center)
+					.Padding(4,0,4,0)
+					[
+						SNew(STextComboBox)
+						.IsEnabled( this, &SPolishBuildingsDialog::IsLightmapChannelEnabled )
+						.OptionsSource(&LightMapResolutionOptions)
+						.InitiallySelectedItem(LightMapResolutionOptions[FMath::FloorLog2(Tool->MergingSettings.TargetLightMapResolution)])
+						.OnSelectionChanged(this, &SPolishBuildingsDialog::SetTargetLightMapResolution)
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+					]
+				]
+			]
+		]
+
+		// Other merging settings
+		+SVerticalBox::Slot()
+		.AutoHeight()
+		.Padding(0,2,0,0)
+		[
+			SNew(SBorder)
+			.BorderImage(FEditorStyle::GetBrush("ToolPanel.GroupBorder"))
+			[
+				SNew(SVerticalBox)
+
+				// LOD to export
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew(SHorizontalBox)
+
+					+SHorizontalBox::Slot()
+					.AutoWidth()
+					.VAlign(VAlign_Center)
+					[
+						SNew(SCheckBox)
+						.Type(ESlateCheckBoxType::CheckBox)
+						.IsChecked(this, &SPolishBuildingsDialog::GetExportSpecificLODEnabled)
+						.OnCheckStateChanged(this, &SPolishBuildingsDialog::SetExportSpecificLODEnabled)
+						.Content()
+						[
+							SNew(STextBlock)
+							.IsEnabled(this, &SPolishBuildingsDialog::IsExportSpecificLODEnabled)
+							.Text(LOCTEXT("TargetMeshLODIndexLabel", "Export specific LOD:"))
+							.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+						]
+					]
+					
+					+SHorizontalBox::Slot()
+					.AutoWidth()
+					.VAlign(VAlign_Center)
+					.Padding(4,0,4,0)
+					[
+						SNew(STextComboBox)
+						.IsEnabled(this, &SPolishBuildingsDialog::IsExportSpecificLODEnabled)
+						.OptionsSource(&ExportLODOptions)
+						.InitiallySelectedItem(ExportLODOptions[Tool->ExportLODIndex])
+						.OnSelectionChanged(this, &SPolishBuildingsDialog::SetExportSpecificLODIndex)
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+					]
+				]
+					
+				// Vertex colors
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew(SCheckBox)
+					.Type(ESlateCheckBoxType::CheckBox)
+					.IsChecked(this, &SPolishBuildingsDialog::GetImportVertexColors)
+					.OnCheckStateChanged(this, &SPolishBuildingsDialog::SetImportVertexColors)
+					.Content()
+					[
+						SNew(STextBlock)
+						.Text(LOCTEXT("ImportVertexColorsLabel", "Import Vertex Colors"))
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+					]
+				]
+
+				// Pivot at zero
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew(SCheckBox)
+					.Type(ESlateCheckBoxType::CheckBox)
+					.IsChecked(this, &SPolishBuildingsDialog::GetPivotPointAtZero)
+					.OnCheckStateChanged(this, &SPolishBuildingsDialog::SetPivotPointAtZero)
+					.Content()
+					[
+						SNew(STextBlock)
+						.Text(LOCTEXT("PivotPointAtZeroLabel", "Pivot Point At (0,0,0)"))
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+					]
+				]
+
+				// Replace source actors
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew(SCheckBox)
+					.Type(ESlateCheckBoxType::CheckBox)
+					.IsChecked(this, &SPolishBuildingsDialog::GetReplaceSourceActors)
+					.OnCheckStateChanged(this, &SPolishBuildingsDialog::SetReplaceSourceActors)
+					.Content()
+					[
+						SNew(STextBlock)
+						.Text(LOCTEXT("ReplaceSourceActorsLabel", "Replace Source Actors"))
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+					]
+				]
+				
+				// Merge physics data
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew(SCheckBox)
+					.Type(ESlateCheckBoxType::CheckBox)
+					.IsChecked(this, &SPolishBuildingsDialog::GetMergePhyisicData)
+					.OnCheckStateChanged(this, &SPolishBuildingsDialog::SetMergePhyisicData)
+					.Content()
+					[
+						SNew(STextBlock)
+						.Text(LOCTEXT("MergePhysicsDataLabel", "Merge Physics Data"))
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+					]
+				]
+
+				// Merge materials
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew(SCheckBox)
+					.Type(ESlateCheckBoxType::CheckBox)
+					.IsChecked(this, &SPolishBuildingsDialog::GetMergeMaterials)
+					.OnCheckStateChanged(this, &SPolishBuildingsDialog::SetMergeMaterials)
+					.Content()
+					[
+						SNew(STextBlock)
+						.Text(LOCTEXT("MergeMaterialsLabel", "Merge Materials"))
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+					]
+				]
+				// Export normal map
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew(SCheckBox)
+					.Type(ESlateCheckBoxType::CheckBox)
+					.IsChecked(this, &SPolishBuildingsDialog::GetExportNormalMap)
+					.OnCheckStateChanged(this, &SPolishBuildingsDialog::SetExportNormalMap)
+					.IsEnabled(this, &SPolishBuildingsDialog::IsMaterialMergingEnabled)
+					.Content()
+					[
+						SNew(STextBlock)
+						.Text(LOCTEXT("ExportNormalMapLabel", "Export Normal Map"))
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+					]
+				]
+				// Export metallic map
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew(SCheckBox)
+					.Type(ESlateCheckBoxType::CheckBox)
+					.IsChecked(this, &SPolishBuildingsDialog::GetExportMetallicMap)
+					.OnCheckStateChanged(this, &SPolishBuildingsDialog::SetExportMetallicMap)
+					.IsEnabled(this, &SPolishBuildingsDialog::IsMaterialMergingEnabled)
+					.Content()
+					[
+						SNew(STextBlock)
+						.Text(LOCTEXT("ExportMetallicMapLabel", "Export Metallic Map"))
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+					]
+				]
+				// Export roughness map
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew(SCheckBox)
+					.Type(ESlateCheckBoxType::CheckBox)
+					.IsChecked(this, &SPolishBuildingsDialog::GetExportRoughnessMap)
+					.OnCheckStateChanged(this, &SPolishBuildingsDialog::SetExportRoughnessMap)
+					.IsEnabled(this, &SPolishBuildingsDialog::IsMaterialMergingEnabled)
+					.Content()
+					[
+						SNew(STextBlock)
+						.Text(LOCTEXT("ExportRoughnessMapLabel", "Export Roughness Map"))
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+					]
+				]
+				// Export specular map
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew(SCheckBox)
+					.Type(ESlateCheckBoxType::CheckBox)
+					.IsChecked(this, &SPolishBuildingsDialog::GetExportSpecularMap)
+					.OnCheckStateChanged(this, &SPolishBuildingsDialog::SetExportSpecularMap)
+					.IsEnabled(this, &SPolishBuildingsDialog::IsMaterialMergingEnabled)
+					.Content()
+					[
+						SNew(STextBlock)
+						.Text(LOCTEXT("ExportSpecularMapLabel", "Export Specular Map"))
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+					]
+				]
+				
+				// Merged texture size
+				+SVerticalBox::Slot()
+				.AutoHeight()
+				.Padding(FEditorStyle::GetMargin("StandardDialog.ContentPadding"))
+				[
+					SNew(SHorizontalBox)
+					+SHorizontalBox::Slot()
+					.AutoWidth()
+					.VAlign(VAlign_Center)
+					[
+						SNew(STextBlock)
+						.IsEnabled(this, &SPolishBuildingsDialog::IsMaterialMergingEnabled)
+						.Text(LOCTEXT("MergedMaterialAtlasResolutionLabel", "Merged Material Atlas Resolution:"))
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+					]
+												
+					+SHorizontalBox::Slot()
+					.AutoWidth()
+					.VAlign(VAlign_Center)
+					.Padding(4,0,4,0)
+					[
+						SNew(STextComboBox)
+						.IsEnabled(this, &SPolishBuildingsDialog::IsMaterialMergingEnabled)
+						.OptionsSource(&MergedMaterialResolutionOptions)
+						.InitiallySelectedItem( MergedMaterialResolutionOptions[FMath::FloorLog2( Tool->MergingSettings.MaterialSettings.TextureSize.X )] )
+						.OnSelectionChanged(this, &SPolishBuildingsDialog::SetMergedMaterialAtlasResolution)
+						.Font(FEditorStyle::GetFontStyle("StandardDialog.SmallFont"))
+					]
+				]														
+			]
+		]
+	];
+}
+END_SLATE_FUNCTION_BUILD_OPTIMIZATION
+
+ECheckBoxState SPolishBuildingsDialog::GetGenerateLightmapUV() const
+{
+	return (Tool->MergingSettings.bGenerateLightMapUV ? ECheckBoxState::Checked : ECheckBoxState::Unchecked);
+}
+
+void SPolishBuildingsDialog::SetGenerateLightmapUV(ECheckBoxState NewValue)
+{
+	Tool->MergingSettings.bGenerateLightMapUV = (ECheckBoxState::Checked == NewValue);
+}
+
+bool SPolishBuildingsDialog::IsLightmapChannelEnabled() const
+{
+	return Tool->MergingSettings.bGenerateLightMapUV;
+}
+
+void SPolishBuildingsDialog::SetTargetLightMapChannel(TSharedPtr<FString> NewSelection, ESelectInfo::Type SelectInfo)
+{
+	TTypeFromString<int32>::FromString(Tool->MergingSettings.TargetLightMapUVChannel, **NewSelection);
+}
+
+void SPolishBuildingsDialog::SetTargetLightMapResolution(TSharedPtr<FString> NewSelection, ESelectInfo::Type SelectInfo)
+{
+	TTypeFromString<int32>::FromString(Tool->MergingSettings.TargetLightMapResolution, **NewSelection);
+}
+
+ECheckBoxState SPolishBuildingsDialog::GetExportSpecificLODEnabled() const
+{
+	return (Tool->bExportSpecificLOD ? ECheckBoxState::Checked : ECheckBoxState::Unchecked);
+}
+
+void SPolishBuildingsDialog::SetExportSpecificLODEnabled(ECheckBoxState NewValue)
+{
+	Tool->bExportSpecificLOD = (NewValue == ECheckBoxState::Checked);
+}
+
+bool SPolishBuildingsDialog::IsExportSpecificLODEnabled() const
+{
+	return Tool->bExportSpecificLOD;
+}
+
+void SPolishBuildingsDialog::SetExportSpecificLODIndex(TSharedPtr<FString> NewSelection, ESelectInfo::Type SelectInfo)
+{
+	TTypeFromString<int32>::FromString(Tool->ExportLODIndex, **NewSelection);
+}
+
+ECheckBoxState SPolishBuildingsDialog::GetImportVertexColors() const
+{
+	return ( Tool->MergingSettings.bBakeVertexData ? ECheckBoxState::Checked : ECheckBoxState::Unchecked );
+}
+
+void SPolishBuildingsDialog::SetImportVertexColors(ECheckBoxState NewValue)
+{
+	Tool->MergingSettings.bBakeVertexData = ( ECheckBoxState::Checked == NewValue );
+}
+
+ECheckBoxState SPolishBuildingsDialog::GetPivotPointAtZero() const
+{
+	return (Tool->MergingSettings.bPivotPointAtZero ? ECheckBoxState::Checked : ECheckBoxState::Unchecked);
+}
+
+void SPolishBuildingsDialog::SetPivotPointAtZero(ECheckBoxState NewValue)
+{
+	Tool->MergingSettings.bPivotPointAtZero = (ECheckBoxState::Checked == NewValue);
+}
+
+ECheckBoxState SPolishBuildingsDialog::GetReplaceSourceActors() const
+{
+	return (Tool->bReplaceSourceActors ? ECheckBoxState::Checked : ECheckBoxState::Unchecked);
+}
+
+void SPolishBuildingsDialog::SetReplaceSourceActors(ECheckBoxState NewValue)
+{
+	Tool->bReplaceSourceActors = (ECheckBoxState::Checked == NewValue);
+}
+
+ECheckBoxState SPolishBuildingsDialog::GetMergePhyisicData() const
+{
+	return (Tool->MergingSettings.bMergePhysicsData ? ECheckBoxState::Checked : ECheckBoxState::Unchecked);
+}
+
+void SPolishBuildingsDialog::SetMergePhyisicData(ECheckBoxState NewValue)
+{
+	Tool->MergingSettings.bMergePhysicsData = (ECheckBoxState::Checked == NewValue);
+}
+
+bool SPolishBuildingsDialog::IsMaterialMergingEnabled() const
+{
+	return Tool->MergingSettings.bMergeMaterials;
+}
+
+ECheckBoxState SPolishBuildingsDialog::GetMergeMaterials() const
+{
+	return (Tool->MergingSettings.bMergeMaterials ? ECheckBoxState::Checked : ECheckBoxState::Unchecked);
+}
+
+void SPolishBuildingsDialog::SetMergeMaterials(ECheckBoxState NewValue)
+{
+	Tool->MergingSettings.bMergeMaterials = (ECheckBoxState::Checked == NewValue);
+}
+
+ECheckBoxState SPolishBuildingsDialog::GetExportNormalMap() const
+{
+	return ( Tool->MergingSettings.MaterialSettings.bNormalMap ? ECheckBoxState::Checked : ECheckBoxState::Unchecked );
+}
+
+void SPolishBuildingsDialog::SetExportNormalMap(ECheckBoxState NewValue)
+{
+	Tool->MergingSettings.MaterialSettings.bNormalMap = ( ECheckBoxState::Checked == NewValue );
+}
+
+ECheckBoxState SPolishBuildingsDialog::GetExportMetallicMap() const
+{
+	return ( Tool->MergingSettings.MaterialSettings.bMetallicMap ? ECheckBoxState::Checked : ECheckBoxState::Unchecked );
+}
+
+void SPolishBuildingsDialog::SetExportMetallicMap(ECheckBoxState NewValue)
+{
+	Tool->MergingSettings.MaterialSettings.bMetallicMap = ( ECheckBoxState::Checked == NewValue );
+}
+
+ECheckBoxState SPolishBuildingsDialog::GetExportRoughnessMap() const
+{
+	return ( Tool->MergingSettings.MaterialSettings.bRoughnessMap ? ECheckBoxState::Checked : ECheckBoxState::Unchecked );
+}
+
+void SPolishBuildingsDialog::SetExportRoughnessMap(ECheckBoxState NewValue)
+{
+	Tool->MergingSettings.MaterialSettings.bRoughnessMap = ( ECheckBoxState::Checked == NewValue );
+}
+
+ECheckBoxState SPolishBuildingsDialog::GetExportSpecularMap() const
+{
+	return ( Tool->MergingSettings.MaterialSettings.bSpecularMap ? ECheckBoxState::Checked : ECheckBoxState::Unchecked );
+}
+
+void SPolishBuildingsDialog::SetExportSpecularMap(ECheckBoxState NewValue)
+{
+	Tool->MergingSettings.MaterialSettings.bSpecularMap = ( ECheckBoxState::Checked == NewValue );
+}
+
+void SPolishBuildingsDialog::SetMergedMaterialAtlasResolution(TSharedPtr<FString> NewSelection, ESelectInfo::Type SelectInfo)
+{
+	TTypeFromString<int32>::FromString( Tool->MergingSettings.MaterialSettings.TextureSize.X, **NewSelection );
+	TTypeFromString<int32>::FromString( Tool->MergingSettings.MaterialSettings.TextureSize.Y, **NewSelection );
+}
+
+
+#undef LOCTEXT_NAMESPACE
--- a/Plugins/PolishBuildings/Source/Private/PolishBuildingsTool/SPolishBuildingsDialog.h
+++ b/Plugins/PolishBuildings/Source/Private/PolishBuildingsTool/SPolishBuildingsDialog.h
@@ -0,0 +1,86 @@
+// Copyright 1998-2015 Epic Games, Inc. All Rights Reserved.
+#pragma once
+
+class FPolishBuildingsTool;
+
+/*-----------------------------------------------------------------------------
+   SPolishBuildingsDialog
+-----------------------------------------------------------------------------*/
+class SPolishBuildingsDialog : public SCompoundWidget
+{
+public:
+	SLATE_BEGIN_ARGS(SPolishBuildingsDialog)
+	{
+	}
+
+	SLATE_END_ARGS()
+
+public:
+	/** **/
+	SPolishBuildingsDialog();
+
+	/** SWidget functions */
+	void Construct(const FArguments& InArgs, FPolishBuildingsTool* InTool);
+
+private:
+
+	/** Called when the Merge button is clicked */
+	FReply OnMergeClicked();
+
+	/**  */
+	ECheckBoxState GetGenerateLightmapUV() const;
+	void SetGenerateLightmapUV(ECheckBoxState NewValue);
+
+	/** Target lightmap channel */
+	bool IsLightmapChannelEnabled() const;
+	void SetTargetLightMapChannel(TSharedPtr<FString> NewSelection, ESelectInfo::Type SelectInfo);
+	void SetTargetLightMapResolution(TSharedPtr<FString> NewSelection, ESelectInfo::Type SelectInfo);
+
+	/**  */
+	ECheckBoxState GetExportSpecificLODEnabled() const;
+	void SetExportSpecificLODEnabled(ECheckBoxState NewValue);
+	bool IsExportSpecificLODEnabled() const;
+	void SetExportSpecificLODIndex(TSharedPtr<FString> NewSelection, ESelectInfo::Type SelectInfo);
+		
+	/**  */
+	ECheckBoxState GetImportVertexColors() const;
+	void SetImportVertexColors(ECheckBoxState NewValue);
+
+	/**  */
+	ECheckBoxState GetPivotPointAtZero() const;
+	void SetPivotPointAtZero(ECheckBoxState NewValue);
+
+	ECheckBoxState GetReplaceSourceActors() const;
+	void SetReplaceSourceActors(ECheckBoxState NewValue);
+
+	ECheckBoxState GetMergePhyisicData() const;
+	void SetMergePhyisicData(ECheckBoxState NewValue);
+	
+	/** Material merging */
+	bool IsMaterialMergingEnabled() const;
+	ECheckBoxState GetMergeMaterials() const;
+	void SetMergeMaterials(ECheckBoxState NewValue);
+
+	ECheckBoxState GetExportNormalMap() const;
+	void SetExportNormalMap(ECheckBoxState NewValue);
+
+	ECheckBoxState GetExportMetallicMap() const;
+	void SetExportMetallicMap(ECheckBoxState NewValue);
+
+	ECheckBoxState GetExportRoughnessMap() const;
+	void SetExportRoughnessMap(ECheckBoxState NewValue);
+
+	ECheckBoxState GetExportSpecularMap() const;
+	void SetExportSpecularMap(ECheckBoxState NewValue);
+
+	void SetMergedMaterialAtlasResolution(TSharedPtr<FString> NewSelection, ESelectInfo::Type SelectInfo);
+	
+private:
+
+	FPolishBuildingsTool* Tool;
+
+	TArray<TSharedPtr<FString>>	ExportLODOptions;
+	TArray<TSharedPtr<FString>>	LightMapResolutionOptions;
+	TArray<TSharedPtr<FString>>	LightMapChannelOptions;
+	TArray<TSharedPtr<FString>>	MergedMaterialResolutionOptions;
+};
--- a/Plugins/PolishBuildings/Source/Private/SPolishBuildingsToolbar.cpp
+++ b/Plugins/PolishBuildings/Source/Private/SPolishBuildingsToolbar.cpp
@@ -0,0 +1,219 @@
+// Copyright 1998-2014 Epic Games, Inc. All Rights Reserved.
+
+#include "PolishBuildingsPrivatePCH.h"
+#include "SPolishBuildingsToolbar.h"
+#include "LevelEditor.h"
+#include "IDocumentation.h"
+#include "ContentBrowserModule.h"
+
+#define LOCTEXT_NAMESPACE "SPolishBuildingsToolbar"
+
+
+//////////////////////////////////////////////////////////////
+
+void SPolishBuildingsToolbar::Construct(const FArguments& InArgs)
+{
+	// Important: We use raw bindings here because we are releasing our binding in our destructor (where a weak pointer would be invalid)
+	// It's imperative that our delegate is removed in the destructor for the level editor module to play nicely with reloading.
+
+	FLevelEditorModule& LevelEditor = FModuleManager::GetModuleChecked<FLevelEditorModule>("LevelEditor");
+	LevelEditor.OnActorSelectionChanged().AddRaw(this, &SPolishBuildingsToolbar::OnActorSelectionChanged);
+
+	RegisteredTools = InArgs._ToolsToRegister;
+
+	ChildSlot
+	[
+		SNew(SVerticalBox)
+
+		+ SVerticalBox::Slot()
+		.AutoHeight()
+		.HAlign(HAlign_Left)
+		.Padding(0, 0, 0, 0)
+		[
+			SAssignNew(ToolbarContainer, SBorder)
+			.BorderImage(FEditorStyle::GetBrush("NoBorder"))
+			.Padding(FMargin(4, 0, 0, 0))
+		]
+
+		+ SVerticalBox::Slot()
+		.FillHeight(1.0f)
+		.Padding(2, 0, 0, 0)
+		[
+			SNew(SBorder)
+			.BorderImage(FEditorStyle::GetBrush("ToolPanel.GroupBorder"))
+			.Padding(0.f)
+			.IsEnabled(this, &SPolishBuildingsToolbar::GetContentEnabledState)
+			[
+				SNew(SVerticalBox)
+
+				+ SVerticalBox::Slot()
+				.FillHeight(1.0f)
+				.Padding(4, 4, 4, 4)
+				[
+					SNew(SScrollBox)
+					+SScrollBox::Slot()
+					[
+						SAssignNew(InlineContentHolder, SBox)
+					]
+				]
+
+				+ SVerticalBox::Slot()
+				.AutoHeight()
+				.HAlign(HAlign_Right)
+				.Padding(4, 4, 10, 4)
+				[
+					SNew(SButton)
+					.Text(LOCTEXT("PolishBuildings", "Merge Actors"))
+					.OnClicked(this, &SPolishBuildingsToolbar::OnPolishBuildingsClicked)
+				]
+			]
+		]
+	];
+
+	UpdateToolbar();
+
+	// Update selected actor state for the first time
+	GUnrealEd->UpdateFloatingPropertyWindows();
+}
+
+
+SPolishBuildingsToolbar::~SPolishBuildingsToolbar()
+{
+	FLevelEditorModule& LevelEditor = FModuleManager::GetModuleChecked<FLevelEditorModule>("LevelEditor");
+	LevelEditor.OnActorSelectionChanged().RemoveAll(this);
+}
+
+
+void SPolishBuildingsToolbar::OnActorSelectionChanged(const TArray<UObject*>& NewSelection, bool bForceRefresh)
+{
+	SelectedObjects = NewSelection;
+	bIsContentEnabled = (NewSelection.Num() > 0);
+}
+
+
+void SPolishBuildingsToolbar::OnToolSelectionChanged(const ECheckBoxState NewCheckedState, int32 ToolIndex)
+{
+	if (NewCheckedState == ECheckBoxState::Checked)
+	{
+		CurrentlySelectedTool = ToolIndex;
+		UpdateInlineContent();
+	}
+}
+
+
+ECheckBoxState SPolishBuildingsToolbar::OnIsToolSelected(int32 ToolIndex) const
+{
+	return (CurrentlySelectedTool == ToolIndex) ? ECheckBoxState::Checked : ECheckBoxState::Unchecked;
+}
+
+
+FReply SPolishBuildingsToolbar::OnPolishBuildingsClicked()
+{
+	if (CurrentlySelectedTool >= 0 && CurrentlySelectedTool < RegisteredTools.Num())
+	{
+		const FString DefaultPackageName = RegisteredTools[CurrentlySelectedTool]->GetDefaultPackageName();
+		const FString DefaultPath = FPackageName::GetLongPackagePath(DefaultPackageName);
+		const FString DefaultName = FPackageName::GetShortName(DefaultPackageName);
+
+		// Initialize SaveAssetDialog config
+		FSaveAssetDialogConfig SaveAssetDialogConfig;
+		SaveAssetDialogConfig.DialogTitleOverride = LOCTEXT("CreateMergedActorTitle", "Create Merged Actor");
+		SaveAssetDialogConfig.DefaultPath = DefaultPath;
+		SaveAssetDialogConfig.DefaultAssetName = DefaultName;
+		SaveAssetDialogConfig.ExistingAssetPolicy = ESaveAssetDialogExistingAssetPolicy::AllowButWarn;
+
+		FContentBrowserModule& ContentBrowserModule = FModuleManager::LoadModuleChecked<FContentBrowserModule>("ContentBrowser");
+		FString SaveObjectPath = ContentBrowserModule.Get().CreateModalSaveAssetDialog(SaveAssetDialogConfig);
+		if (!SaveObjectPath.IsEmpty())
+		{
+			const FString PackageName = FPackageName::ObjectPathToPackageName(SaveObjectPath);
+
+			RegisteredTools[CurrentlySelectedTool]->RunMerge(PackageName);
+		}
+	}
+
+	return FReply::Handled();
+}
+
+
+bool SPolishBuildingsToolbar::GetContentEnabledState() const
+{
+	return bIsContentEnabled;
+}
+
+
+void SPolishBuildingsToolbar::AddTool(IPolishBuildingsTool* Tool)
+{
+	check(!RegisteredTools.Contains(Tool));
+	RegisteredTools.Add(Tool);
+	UpdateToolbar();
+}
+
+
+void SPolishBuildingsToolbar::RemoveTool(IPolishBuildingsTool* Tool)
+{
+	int32 IndexToRemove = RegisteredTools.Find(Tool);
+	if (IndexToRemove != INDEX_NONE)
+	{
+		RegisteredTools.RemoveAt(IndexToRemove);
+
+		if (CurrentlySelectedTool > IndexToRemove)
+		{
+			CurrentlySelectedTool--;
+		}
+		UpdateToolbar();
+	}
+}
+
+
+void SPolishBuildingsToolbar::UpdateToolbar()
+{
+	const ISlateStyle& StyleSet = FEditorStyle::Get();
+
+	TSharedRef<SHorizontalBox> HorizontalBox =
+		SNew(SHorizontalBox);
+
+	for (int32 ToolIndex = 0; ToolIndex < RegisteredTools.Num(); ToolIndex++)
+	{
+		const IPolishBuildingsTool* Tool = RegisteredTools[ToolIndex];
+
+		HorizontalBox->AddSlot()
+		.Padding(StyleSet.GetMargin("EditorModesToolbar.SToolBarButtonBlock.Padding"))
+		[
+			SNew(SCheckBox)
+			.Style(&StyleSet, "EditorModesToolbar.ToggleButton")
+			.OnCheckStateChanged(this, &SPolishBuildingsToolbar::OnToolSelectionChanged, ToolIndex)
+			.IsChecked(this, &SPolishBuildingsToolbar::OnIsToolSelected, ToolIndex)
+			.Padding(StyleSet.GetMargin("EditorModesToolbar.SToolBarButtonBlock.CheckBox.Padding"))
+			.ToolTip(IDocumentation::Get()->CreateToolTip(Tool->GetTooltipText(), nullptr, FString(), FString()))
+			[
+				SNew(SImage)
+				.Image(StyleSet.GetBrush(Tool->GetIconName()))
+			]
+		];
+	}
+
+	TSharedRef<SBorder> ToolbarContent =
+		SNew(SBorder)
+		.Padding(0)
+		.BorderImage(StyleSet.GetBrush("NoBorder"))
+		[
+			HorizontalBox
+		];
+
+	ToolbarContainer->SetContent(ToolbarContent);
+
+	UpdateInlineContent();
+}
+
+
+void SPolishBuildingsToolbar::UpdateInlineContent()
+{
+	if (CurrentlySelectedTool >= 0 && CurrentlySelectedTool < RegisteredTools.Num())
+	{
+		InlineContentHolder->SetContent(RegisteredTools[CurrentlySelectedTool]->GetWidget());
+	}
+}
+
+
+#undef LOCTEXT_NAMESPACE
--- a/Plugins/PolishBuildings/Source/Private/SPolishBuildingsToolbar.h
+++ b/Plugins/PolishBuildings/Source/Private/SPolishBuildingsToolbar.h
@@ -0,0 +1,83 @@
+// Copyright 1998-2014 Epic Games, Inc. All Rights Reserved.
+
+#pragma once
+
+class IPolishBuildingsTool;
+
+//////////////////////////////////////////////////////////////////////////
+// SPolishBuildingsToolbar
+
+class SPolishBuildingsToolbar : public SCompoundWidget
+{
+public:
+
+	SLATE_BEGIN_ARGS(SPolishBuildingsToolbar) {}
+		SLATE_ARGUMENT(TArray<IPolishBuildingsTool*>, ToolsToRegister)
+	SLATE_END_ARGS()
+
+	/**
+	 * Construct the widget
+	 *
+	 * @param	InArgs			A declaration from which to construct the widget
+	 */
+	void Construct(const FArguments& InArgs);
+
+	/** Constructor */
+	SPolishBuildingsToolbar()
+		: CurrentlySelectedTool(0)
+	{}
+
+	/** Destructor */
+	virtual ~SPolishBuildingsToolbar();
+
+	/** Add a new tool to the toolbar */
+	void AddTool(IPolishBuildingsTool* Tool);
+
+	/** Remove an existing tool from the toolbar */
+	void RemoveTool(IPolishBuildingsTool* Tool);
+
+
+private:
+
+	/** Called when the level actor selection changes */
+	void OnActorSelectionChanged(const TArray<UObject*>& NewSelection, bool bForceRefresh);
+
+	/** Called when the currently selected tool changes */
+	void OnToolSelectionChanged(const ECheckBoxState NewCheckedState, int32 ToolIndex);
+
+	/** Called to determine whether a toolbox widget is selected or not */
+	ECheckBoxState OnIsToolSelected(int32 ToolIndex) const;
+
+	/** Called when the Merge Actors button is clicked */
+	FReply OnPolishBuildingsClicked();
+
+	/** Determine whether the widget content is enabled or not */
+	bool GetContentEnabledState() const;
+
+	/** Update the toolbar container based on the currently registered tools */
+	void UpdateToolbar();
+
+	/** Updates the inline content widget for the current tool */
+	void UpdateInlineContent();
+
+
+private:
+
+	/** List of registered tool instances */
+	TArray<IPolishBuildingsTool*> RegisteredTools;
+
+	/** Index of currently selected tool */
+	int32 CurrentlySelectedTool;
+
+	/** List of currently selected objects */
+	TArray<UObject*> SelectedObjects;
+
+	/** Whether the merge actors tool panel is enabled or not */
+	bool bIsContentEnabled;
+
+	/** The container holding the toolbar */
+	TSharedPtr<SBorder> ToolbarContainer;
+
+	/** Inline content area for different tool modes */
+	TSharedPtr<SBox> InlineContentHolder;
+};
--- a/Plugins/PolishBuildings/Source/Public/IPolishBuildingsModule.h
+++ b/Plugins/PolishBuildings/Source/Public/IPolishBuildingsModule.h
@@ -0,0 +1,33 @@
+// Copyright 1998-2014 Epic Games, Inc. All Rights Reserved.
+#pragma once
+
+#include "ModuleManager.h"
+#include "IPolishBuildingsTool.h"
+
+
+/**
+ * Merge Actors module interface
+ */
+class IPolishBuildingsModule : public IModuleInterface
+{
+
+public:
+
+	/**
+	 * Get reference to the Merge Actors module instance
+	 */
+	static inline IPolishBuildingsModule& Get()
+	{
+		return FModuleManager::LoadModuleChecked<IPolishBuildingsModule>("PolishBuildings");
+	}
+
+	/**
+	 * Register an IPolishBuildingsTool with the module, passing ownership to it
+	 */
+	virtual bool RegisterPolishBuildingsTool(TUniquePtr<IPolishBuildingsTool> Tool) = 0;
+
+	/**
+	 * Unregister an IPolishBuildingsTool with the module
+	 */
+	virtual bool UnregisterPolishBuildingsTool(IPolishBuildingsTool* Tool) = 0;
+};
--- a/Plugins/PolishBuildings/Source/Public/IPolishBuildingsTool.h
+++ b/Plugins/PolishBuildings/Source/Public/IPolishBuildingsTool.h
@@ -0,0 +1,43 @@
+// Copyright 1998-2014 Epic Games, Inc. All Rights Reserved.
+#pragma once
+
+/**
+* Merge Actors tool interface
+*/
+class IPolishBuildingsTool
+{
+
+public:
+
+	/** Virtual destructor */
+	virtual ~IPolishBuildingsTool() {}
+
+	/**
+	 * Gets the widget instance associated with this tool
+	 */
+	virtual TSharedRef<SWidget> GetWidget() = 0;
+
+	/**
+	 * Get the name of the icon displayed in the Merge Actors toolbar
+	 */
+	virtual FName GetIconName() const = 0;
+
+	/**
+	 * Get Tooltip text displayed in the Merge Actors toolbar
+	 */
+	virtual FText GetTooltipText() const = 0;
+
+	/**
+	 * Get default name for the merged asset package
+	 */
+	virtual FString GetDefaultPackageName() const = 0;
+
+	/**
+	 * Perform merge operation
+	 *
+	 * @param	PackageName		Long package name of the asset to create
+	 * @return	true if the merge succeeded
+	 */
+	virtual bool RunMerge(const FString& PackageName) = 0;
+
+};