MeshToLandscape.h

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// Copyright (c) 2026 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 <util/ue-header-guard-begin.h>
#include "CoreMinimal.h"
#include "Modules/ModuleManager.h"
#include "EngineMinimal.h"
#include <util/ue-header-guard-end.h>
 
#include "MeshToLandscape.generated.h"
 
class ALandscape;
class ULandscapeComponent;
class AStaticMeshActor;
class UStaticMeshComponent;
 
USTRUCT(BlueprintType)
struct CARLA_API FHitDisplacementEntry
{
    GENERATED_BODY()
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "MeshToLandscapeUtil")
    FString Pattern;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "MeshToLandscapeUtil")
    double Displacement;
};
 
UCLASS(BlueprintType)
class CARLA_API UMeshToLandscapeUtil :
    public UBlueprintFunctionLibrary
{
    GENERATED_BODY()
 
    static void FilterByClassList(
        TArray<UActorComponent*>& Components,
        const TArray<UClass*>& Blacklist,
        const TArray<UClass*>& Whitelist);
 
    static void FilterInvalidStaticMeshComponents(
        TArray<UActorComponent*>& Components);
 
    static void FilterStaticMeshComponentsByVariance(
        TArray<UActorComponent*>& Components,
        double MaxZVariance);
 
    static void FilterComponentsByPatterns(
        TArray<UActorComponent*>& Components,
        const TArray<FString>& PatternWhitelist,
        const TArray<FString>& PatternBlacklist);
 
public:
 
    UFUNCTION(BlueprintCallable, Category="CarlaTools")
    static ALandscape* ConvertMeshesToLandscape(
        const TArray<UActorComponent*>& Components,
        int32 SubsectionSizeQuads,
        int32 NumSubsections,
        int32 SampleFrequency,
        const TArray<FHitDisplacementEntry>& HitDisplacementMap);
 
    UFUNCTION(BlueprintCallable, Category="CarlaTools", meta=(WorldContext="WorldContextObject"))
    static void EnumerateLandscapeLikeStaticMeshComponents(
        UObject* WorldContextObject,
        const TArray<FString>& PatternWhitelist,
        const TArray<FString>& PatternBlacklist,
        const TArray<UClass*>& ClassWhitelist,
        const TArray<UClass*>& ClassBlacklist,
        double MaxZVariance,
        TArray<UActorComponent*>& OutComponents);
 
};