Merge actors for building and material definition

Unreal/CarlaUE4/Plugins/Carla/Source/Carla/Actor/ActorDefinition.h

@@ -65,3 +65,22 @@ struct FVehicleActorDefinition
   UPROPERTY(EditAnywhere, BlueprintReadWrite)
   TArray<FColor> colors;
 };
+
+/// A definition of a Procedural Building Material with all the variation of colors.
+USTRUCT(BlueprintType)
+struct FProceduralBuildingActorDefinition
+{
+  GENERATED_BODY()
+
+  /// A list of comma-separated tags.
+  UPROPERTY(EditAnywhere, BlueprintReadWrite)
+  FString Tags;
+
+  /// The base material
+  UPROPERTY(EditAnywhere, BlueprintReadWrite)
+  UMaterial* Material;
+
+  /// Colors represent the avaliable colors for each material
+  UPROPERTY(EditAnywhere, BlueprintReadWrite)
+  TArray<FColor> Tints;
+};

Unreal/CarlaUE4/Plugins/CarlaTools/Source/CarlaTools/CarlaTools.Build.cs

@@ -88,7 +88,8 @@ public class CarlaTools : ModuleRules
         "Networking",
         "Sockets",
         "RHI",
-        "RenderCore"
+        "RenderCore",
+        "MeshMergeUtilities"
 				// ... add private dependencies that you statically link with here ...	
 			}
 			);

Unreal/CarlaUE4/Plugins/CarlaTools/Source/CarlaTools/Private/ProceduralBuildingUtilities.cpp

@@ -0,0 +1,42 @@
+// Copyright (c) 2017 Computer Vision Center (CVC) at the Universitat Autonoma de Barcelona (UAB). This work is licensed under the terms of the MIT license. For a copy, see <https://opensource.org/licenses/MIT>.
+
+
+#include "ProceduralBuildingUtilities.h"
+
+#include "AssetRegistryModule.h"
+#include "FileHelpers.h"
+#include "IMeshMergeUtilities.h"
+#include "MeshMergeModule.h"
+#include "UObject/Class.h"
+
+void AProceduralBuildingUtilities::GenerateImpostor()
+{
+  // Not implemented yet.
+}
+
+void AProceduralBuildingUtilities::CookProceduralBuildingToMesh(const FString& DestinationPath)
+{
+  TArray<UPrimitiveComponent*> Components;
+  this->GetComponents(Components, false);
+
+  UWorld* World = this->GetWorld();
+
+  FMeshMergingSettings MeshMergeSettings;
+  TArray<UObject*> AssetsToSync;
+
+  FVector NewLocation;
+  const float ScreenAreaSize = TNumericLimits<float>::Max();
+
+  const IMeshMergeUtilities& MeshUtilities = FModuleManager::Get().LoadModuleChecked<IMeshMergeModule>("MeshMergeUtilities").GetUtilities();
+  MeshUtilities.MergeComponentsToStaticMesh(Components, World, MeshMergeSettings, nullptr, nullptr, DestinationPath, AssetsToSync, NewLocation, ScreenAreaSize, true);
+
+
+  for(UObject* ObjectToSave : AssetsToSync)
+  {
+    FAssetRegistryModule::AssetCreated(ObjectToSave);
+    UPackage* ObjectPackage = ObjectToSave->GetPackage();
+    ObjectPackage->MarkPackageDirty();
+  }
+
+  FEditorFileUtils::SaveDirtyPackages(false, false, true, false, true, false, nullptr);
+}

Unreal/CarlaUE4/Plugins/CarlaTools/Source/CarlaTools/Public/ProceduralBuildingUtilities.h

@@ -0,0 +1,26 @@
+// Copyright (c) 2017 Computer Vision Center (CVC) at the Universitat Autonoma de Barcelona (UAB). This work is licensed under the terms of the MIT license. For a copy, see <https://opensource.org/licenses/MIT>.
+
+#pragma once
+
+#include "CoreMinimal.h"
+#include "EditorUtilityActor.h"
+#include "ProceduralBuildingUtilities.generated.h"
+
+struct FIntRect;
+
+/**
+ * 
+ */
+UCLASS()
+class CARLATOOLS_API AProceduralBuildingUtilities : public AEditorUtilityActor
+{
+  GENERATED_BODY()
+
+public:
+  UFUNCTION(BlueprintCallable, Category="Procedural Building Utilities")
+  void GenerateImpostor();
+
+  UFUNCTION(BlueprintCallable, Category="Procedural Building Utilities")
+  void CookProceduralBuildingToMesh(const FString& DestinationPath);
+
+};