// Copyright Epic Games, Inc. All Rights Reserved.

/**
 * Import data and options used when importing a static mesh from fbx
 */

#pragma once

#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "Factories/FbxMeshImportData.h"
#include "FbxStaticMeshImportData.generated.h"

class UStaticMesh;

UCLASS(BlueprintType, config = EditorPerProjectUserSettings, AutoExpandCategories = (Options), MinimalAPI)
class UFbxStaticMeshImportData: public UFbxMeshImportData
{
    GENERATED_UCLASS_BODY()

    /** The LODGroup to associate with this mesh when it is imported */
    UPROPERTY(EditAnywhere, BlueprintReadWrite, config, AdvancedDisplay, Category = Mesh, meta = (ImportType = "StaticMesh"))
    FName StaticMeshLODGroup;

    /** Specify how vertex colors should be imported */
    UPROPERTY(EditAnywhere, BlueprintReadWrite, AdvancedDisplay, config, Category = Mesh, meta = (OBJRestrict = "true", ImportType = "StaticMesh"))
    TEnumAsByte<EVertexColorImportOption::Type> VertexColorImportOption;

    /** Specify override color in the case that VertexColorImportOption is set to Override */
    UPROPERTY(EditAnywhere, BlueprintReadWrite, AdvancedDisplay, config, Category = Mesh, meta = (OBJRestrict = "true", ImportType = "StaticMesh"))
    FColor VertexOverrideColor;

    /** Disabling this option will keep degenerate triangles found.  In general you should leave this option on. */
    UPROPERTY(EditAnywhere, BlueprintReadWrite, AdvancedDisplay, config, Category = Mesh, meta = (ImportType = "StaticMesh", ReimportRestrict = "true"))
    uint32 bRemoveDegenerates : 1;

    /** Required for PNT tessellation but can be slow. Recommend disabling for larger meshes. */
    UPROPERTY(EditAnywhere, BlueprintReadWrite, AdvancedDisplay, config, Category = Mesh, meta = (ImportType = "StaticMesh", ReimportRestrict = "true"))
    uint32 bBuildAdjacencyBuffer : 1;

    UPROPERTY(EditAnywhere, BlueprintReadWrite, AdvancedDisplay, config, Category = Mesh, meta = (ImportType = "StaticMesh", ReimportRestrict = "true"))
    uint32 bBuildReversedIndexBuffer : 1;

    UPROPERTY(EditAnywhere, BlueprintReadWrite, config, AdvancedDisplay, Category = Mesh, meta = (ImportType = "StaticMesh", ReimportRestrict = "true"))
    uint32 bGenerateLightmapUVs : 1;

    /** If checked, one convex hull per UCX_ prefixed collision mesh will be generated instead of decomposing into multiple hulls */
    UPROPERTY(EditAnywhere, BlueprintReadWrite, AdvancedDisplay, config, Category = Mesh, meta = (OBJRestrict = "true", ImportType = "StaticMesh"))
    uint32 bOneConvexHullPerUCX : 1;

    /** If checked, collision will automatically be generated (ignored if custom collision is imported or used). */
    UPROPERTY(EditAnywhere, BlueprintReadWrite, config, Category = Mesh, meta = (OBJRestrict = "true", ImportType = "StaticMesh", DisplayName = "Generate Missing Collision"))
    uint32 bAutoGenerateCollision : 1;

    /** For static meshes, enabling this option will combine all meshes in the FBX into a single monolithic mesh in Unreal */
    UPROPERTY(EditAnywhere, BlueprintReadWrite, AdvancedDisplay, config, Category = Mesh, meta = (ToolTip = "If enabled, combines all meshes into a single mesh", ImportType = "StaticMesh"))
    uint32 bCombineMeshes : 1;

    /** Gets or creates fbx import data for the specified static mesh */
    static UFbxStaticMeshImportData* GetImportDataForStaticMesh(UStaticMesh* StaticMesh, UFbxStaticMeshImportData* TemplateForCreation);

    bool CanEditChange(const FProperty* InProperty) const override;
};