MeshMergingSettings.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "Engine/MaterialMerging.h"
#include "MeshMergingSettings.generated.h"
 
 
UENUM()
enum class EMeshLODSelectionType : uint8
{
    // Whether or not to export all of the LODs found in the source meshes
    AllLODs = 0 UMETA(DisplayName = "Use all LOD levels", ScriptName="AllLods;AllLODs"),
    // Whether or not to export all of the LODs found in the source meshes
    SpecificLOD = 1 UMETA(DisplayName = "Use specific LOD level"),
    // Whether or not to calculate the appropriate LOD model for the given screen size
    CalculateLOD = 2 UMETA(DisplayName = "Calculate correct LOD level"),
    // Whether or not to use the lowest-detail LOD
    LowestDetailLOD = 3 UMETA(DisplayName = "Always use the lowest-detail LOD (i.e. the highest LOD index)")
};
 
UENUM()
enum class EMeshMergeType : uint8
{
    MeshMergeType_Default,
    MeshMergeType_MergeActor
};
 
UENUM()
enum class EUVOutput : uint8
{
    DoNotOutputChannel,
    OutputChannel
};
 
USTRUCT(Blueprintable)
struct FMeshMergingSettings
{
    GENERATED_USTRUCT_BODY()
 
    
    UPROPERTY(EditAnywhere, AdvancedDisplay, BlueprintReadWrite, Category = MeshSettings, meta=(ClampMax = 4096, EditCondition = "!bComputedLightMapResolution", DisplayAfter="bGenerateLightMapUV", DisplayName="Target Lightmap Resolution"))
    int32 TargetLightMapResolution;
 
    UPROPERTY(EditAnywhere, Category = MeshSettings, meta=(DisplayAfter="bBakeVertexDataToMesh"))
    EUVOutput OutputUVs[8]; // Should be MAX_MESH_TEXTURE_COORDS but as this is an engine module we cant include RawMesh
 
    UPROPERTY(EditAnywhere, Category = MaterialSettings, BlueprintReadWrite, meta = (EditCondition = "bMergeMaterials", DisplayAfter="bMergeMaterials"))
    FMaterialProxySettings MaterialSettings;
 
    UPROPERTY(EditAnywhere, Category = MaterialSettings, meta=(DisplayAfter="MaterialSettings"))
    int32 GutterSize;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = MeshSettings, meta = (DisplayAfter="bBakeVertexDataToMesh", DisplayName = "LOD Selection Type"))
    EMeshLODSelectionType LODSelectionType;
 
    UPROPERTY(EditAnywhere, Category = MeshSettings, BlueprintReadWrite, meta = (DisplayAfter="LODSelectionType", EditCondition = "LODSelectionType == EMeshLODSelectionType::SpecificLOD", ClampMin = "0", ClampMax = "7", UIMin = "0", UIMax = "7", EnumCondition = 1))
    int32 SpecificLOD;
 
    UPROPERTY(EditAnywhere, AdvancedDisplay, BlueprintReadWrite, Category = MeshSettings, meta=(DisplayName="Generate Lightmap UV"))
    uint8 bGenerateLightMapUV:1;
 
    UPROPERTY(EditAnywhere, AdvancedDisplay, BlueprintReadWrite, Category = MeshSettings, meta=(DisplayName="Computed Lightmap Resolution"))
    uint8 bComputedLightMapResolution:1;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = MeshSettings)
    uint8 bPivotPointAtZero:1;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = MeshSettings)
    uint8 bMergePhysicsData:1;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = MeshSettings)
    uint8 bMergeMeshSockets : 1;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = MaterialSettings, meta=(EditCondition="LODSelectionType == EMeshLODSelectionType::LowestDetailLOD || LODSelectionType == EMeshLODSelectionType::SpecificLOD"))
    uint8 bMergeMaterials:1;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = MeshSettings)
    uint8 bBakeVertexDataToMesh:1;
 
    UPROPERTY(EditAnywhere, Category = MaterialSettings, BlueprintReadWrite, meta = (EditCondition = "bMergeMaterials"))
    uint8 bUseVertexDataForBakingMaterial:1;
 
    UPROPERTY(Category = MaterialSettings, EditAnywhere, BlueprintReadWrite, meta = (EditCondition = "bMergeMaterials"))
    uint8 bUseTextureBinning:1;
 
    UPROPERTY(EditAnywhere, Category = MaterialSettings)
    uint8 bReuseMeshLightmapUVs:1;
 
    UPROPERTY(EditAnywhere, Category = MaterialSettings)
    uint8 bMergeEquivalentMaterials:1;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = LandscapeCulling)
    uint8 bUseLandscapeCulling:1;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = MeshSettings)
    uint8 bIncludeImposters:1;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = MeshSettings)
    uint8 bSupportRayTracing : 1;
 
    UPROPERTY(EditAnywhere, Category = MeshSettings)
    uint8 bAllowDistanceField:1;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = NaniteSettings)
    FMeshNaniteSettings NaniteSettings;
 
#if WITH_EDITORONLY_DATA
    UPROPERTY()
    uint8 bImportVertexColors_DEPRECATED:1;
 
    UPROPERTY()
    uint8 bCalculateCorrectLODModel_DEPRECATED:1;
 
    UPROPERTY()
    uint8 bExportNormalMap_DEPRECATED:1;
 
    UPROPERTY()
    uint8 bExportMetallicMap_DEPRECATED:1;
 
    UPROPERTY()
    uint8 bExportRoughnessMap_DEPRECATED:1;
 
    UPROPERTY()
    uint8 bExportSpecularMap_DEPRECATED:1;
 
    UPROPERTY()
    uint8 bCreateMergedMaterial_DEPRECATED : 1;
 
    UPROPERTY()
    int32 MergedMaterialAtlasResolution_DEPRECATED;
 
    UPROPERTY()
    int32 ExportSpecificLOD_DEPRECATED;
 
    UPROPERTY()
    uint8 bGenerateNaniteEnabledMesh_DEPRECATED : 1;
 
    UPROPERTY()
    float NaniteFallbackTrianglePercent_DEPRECATED; 
#endif
 
    EMeshMergeType MergeType;
 
    ENGINE_API FMeshMergingSettings();
 
#if WITH_EDITORONLY_DATA
    void PostSerialize(const FArchive& Ar);
#endif
};
 
template<>
struct TStructOpsTypeTraits<FMeshMergingSettings> : public TStructOpsTypeTraitsBase2<FMeshMergingSettings>
{
#if WITH_EDITORONLY_DATA
    enum
    {
        WithPostSerialize = true,
    };
#endif
};