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  3. FLODUtilities

FLODUtilities

Unreal Engine C++ API Reference > Developer > SkeletalMeshUtilitiesCommon

References

   
Module SkeletalMeshUtilitiesCommon
Header /Engine/Source/Developer/SkeletalMeshUtilitiesCommon/Public/LODUtilities.h
Include #include "LODUtilities.h"

Syntax

class FLODUtilities

Constructors

No constructors are accessible with public or protected access.

Functions

  Type Name Description
Public function Static void Before building skeletalmesh base LOD (LOD index 0) using MeshUtilities.BuildSkeletalMesh, we want to adjust the imported faces material index to point on the correct sk material.
Public function Static void

BuildMorphTargets ( USkeletalMesh* SkeletalMesh,
FSkeletalMeshImportData& ImportData,
int32 LODIndex,
bool ShouldImportNormals,
bool ShouldImportTangents,
bool bUseMikkTSpace,
const FOverlappingThresholds& Thresholds
)

 Build the morph targets for the specified LOD.
Public function Static void When any skeletalmesh LOD get imported or re-imported, we want to have common code to set all materials data.
Public function Static void

ProcessImportMeshInfluences ( const int32 WedgeCount,
TArray< SkeletalMeshImportData::FRawBoneInfluence >& Influences,
const FString& MeshName
)

 Process and update the vertex Influences using the predefined wedges
Public function Static void

RefreshLODChange ( const USkeletalMesh* SkeletalMesh
)

 Refresh LOD Change
Public function Static void

RegenerateAllImportSkinWeightProfileData ( FSkeletalMeshLODModel& LODModelDest,
int32 BoneInfluenceLimit,
const ITargetPlatform* TargetPlatform
)

 Re-generate all (editor-only) skin weight profile, used whenever we rebuild the skeletal mesh data which could change the chunking and bone indices
Public function Static void

RegenerateDependentLODs ( USkeletalMesh* SkeletalMesh,
int32 LODIndex,
const ITargetPlatform* TargetPlatform
)

 Regenerate LOD that are dependent of LODIndex
Public function Static bool

RegenerateLOD ( USkeletalMesh* SkeletalMesh,
const ITargetPlatform* TargetPlatform,
int32 NewLODCount,
bool bRegenerateEvenIfImported,
bool bGenerateBaseLOD
)

 Regenerate LODs of the mesh
Public function Static void

RemoveLOD ( FSkeletalMeshUpdateContext& UpdateContext,
int32 DesiredLOD
)

 Removes a particular LOD from the SkeletalMesh.
Public function Static void

RemoveLODs ( FSkeletalMeshUpdateContext& UpdateContext,
const TArray< int32 >& DesiredLODs
)

 Removes the specified LODs from the SkeletalMesh.
Public function Static void Reorder the material slot array to follow the base LOD section order.
Public function Static void

RestoreClothingFromBackup ( USkeletalMesh* SkeletalMesh,
TArray< ClothingAssetUtils::FClothingAssetMeshBinding >& ClothingBindings,
const int32 LODIndex
)

  
Public function Static void  
Public function Static bool

SetCustomLOD ( USkeletalMesh* DestinationSkeletalMesh,
USkeletalMesh* SourceSkeletalMesh,
const int32 LodIndex,
const FString& SourceDataFilename
)

 Add or change the LOD data specified by LodIndex with the content of the sourceSkeletalMesh.
Public function Static void

SimplifySkeletalMeshLOD ( FSkeletalMeshUpdateContext& UpdateContext,
int32 DesiredLOD,
const ITargetPlatform* TargetPlatform,
bool bRestoreClothing,
FThreadSafeBool* OutNeedsPackageDirtied
)

 Simplifies the static mesh based upon various user settings for DesiredLOD.
Public function Static bool

StripLODGeometry ( USkeletalMesh* SkeletalMesh,
const int32 LODIndex,
UTexture2D* TextureMask,
const float Threshold
)

 This function will strip all triangle in the specified LOD that don't have any UV area pointing on a black pixel in the TextureMask.
Public function Static void  
Public function Static void

UnbindClothingAndBackup ( USkeletalMesh* SkeletalMesh,
TArray< ClothingAssetUtils::FClothingAssetMeshBinding >& ClothingBindings,
const int32 LODIndex
)

  
Public function Static bool

UpdateAlternateSkinWeights ( USkeletalMesh* SkeletalMeshDest,
const FName& ProfileNameDest,
int32 LODIndexDest,
const IMeshUtilities::MeshBuildOptions& Options
)

 This function apply the skinning weights from the saved imported skinning weight data to the destination skeletal mesh.
Public function Static bool

UpdateAlternateSkinWeights ( USkeletalMesh* SkeletalMeshDest,
const FName& ProfileNameDest,
USkeletalMesh* SkeletalMeshSrc,
int32 LODIndexDest,
int32 LODIndexSrc,
const IMeshUtilities::MeshBuildOptions& Options
)

 This function apply the skinning weights from asource skeletal mesh to the destination skeletal mesh.
Public function Static bool

UpdateAlternateSkinWeights ( FSkeletalMeshLODModel& LODModelDest,
FSkeletalMeshImportData& ImportDataDest,
USkeletalMesh* SkeletalMeshDest,
const FReferenceSkeleton& RefSkeleton,
const FName& ProfileNameDest,
int32 LODIndexDest,
const IMeshUtilities::MeshBuildOptions& Options
)

  
Public function Static bool

UpdateLODInfoVertexAttributes ( USkeletalMesh* InSkeletalMesh,
int32 InSourceLODIndex,
int32 InTargetLODIndex,
bool bInCopyAttributeValues
)

 Build the vertex attributes

Classes

  Type Name Description
Public struct FSkeletalMeshMatchImportedMaterialsParameters Structure to pass all the needed parameters to do match the material when importing a skeletal mesh LOD.  

Deprecated Functions

  Type Name Description
Public function Static bool Restore the LOD imported model to the last imported data.
Public function Static bool

UpdateAlternateSkinWeights ( USkeletalMesh* SkeletalMeshDest,
const FName& ProfileNameDest,
USkeletalMesh* SkeletalMeshSrc,
int32 LODIndexDest,
int32 LODIndexSrc,
FOverlappingThresholds OverlappingThresholds,
bool ShouldImportNormals,
bool ShouldImportTangents,
bool bUseMikkTSpace,
bool bComputeWeightedNormals
)

 Please use the new overloads of UpdateAlternateSkinWeights that take an IMeshUtilities::MeshBuildOptions. Note that IMeshUtilities::MeshBuildOptions::bComputeNormals/Tangents has the opposite meaning of ShouldImportNormals/Tangents.
Public function Static bool

UpdateAlternateSkinWeights ( USkeletalMesh* SkeletalMeshDest,
const FName& ProfileNameDest,
int32 LODIndexDest,
FOverlappingThresholds OverlappingThresholds,
bool ShouldImportNormals,
bool ShouldImportTangents,
bool bUseMikkTSpace,
bool bComputeWeightedNormals
)

 Please use the new overloads of UpdateAlternateSkinWeights that take an IMeshUtilities::MeshBuildOptions. Note that IMeshUtilities::MeshBuildOptions::bComputeNormals/Tangents has the opposite meaning of ShouldImportNormals/Tangents.
Public function Static bool

UpdateAlternateSkinWeights ( FSkeletalMeshLODModel& LODModelDest,
FSkeletalMeshImportData& ImportDataDest,
USkeletalMesh* SkeletalMeshDest,
const FReferenceSkeleton& RefSkeleton,
const FName& ProfileNameDest,
int32 LODIndexDest,
FOverlappingThresholds OverlappingThresholds,
bool ShouldImportNormals,
bool ShouldImportTangents,
bool bUseMikkTSpace,
bool bComputeWeightedNormals
)

 Please use the new overloads of UpdateAlternateSkinWeights that take an IMeshUtilities::MeshBuildOptions. Note that IMeshUtilities::MeshBuildOptions::bComputeNormals/Tangents has the opposite meaning of ShouldImportNormals/Tangents.

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