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  3. FStaticMeshOperations

FStaticMeshOperations

API > API/Runtime > API/Runtime/StaticMeshDescription

   
Name FStaticMeshOperations
Type class
Header File /Engine/Source/Runtime/StaticMeshDescription/Public/StaticMeshOperations.h
Include Path #include "StaticMeshOperations.h"

Syntax

class FStaticMeshOperations

Derived Classes

Structs

Name Remarks
FAppendSettings  
FGenerateUVOptions  

Enums

Public

Name Remarks
EGenerateUVMethod  

Functions

Static

Name Remarks Include Path Unreal Specifiers

static bool AddUVChannel ( FMeshDescription& MeshDescription
)

 Add a UV channel to the MeshDescription. StaticMeshOperations.h  

static void AppendMeshDescription ( const FMeshDescription& SourceMesh,
FMeshDescription& TargetMesh,
FAppendSettings& AppendSettings
)

   StaticMeshOperations.h  

static void AppendMeshDescriptions ( const TArray< const FMeshDescription* >& SourceMeshes,
FMeshDescription& TargetMesh,
FAppendSettings& AppendSettings
)

   StaticMeshOperations.h  

static void ApplyTransform ( FMeshDescription& MeshDescription,
const FMatrix& Transform,
bool bApplyCorrectNormalTransform
)

   StaticMeshOperations.h  

static void ApplyTransform ( FMeshDescription& MeshDescription,
const FTransform& Transform,
bool bApplyCorrectNormalTransform
)

 Transforms the MeshDescription data using the provided transform. StaticMeshOperations.h  

static void AreNormalsAndTangentsValid ( const FMeshDescription& MeshDescription,
bool& bHasInvalidNormals,
bool& bHasInvalidTangents
)

   StaticMeshOperations.h  

static void BuildWeldedVertexIDRemap ( const FMeshDescription& MeshDescription,
const float WeldingThreshold,
TMap< FVertexID, FVertexID >& OutVertexIDRemap
)

   StaticMeshOperations.h  

static void ComputeMikktTangents ( FMeshDescription& MeshDescription,
bool bIgnoreDegenerateTriangles
)

 Compute tangent and Bi-Normal using mikkt space for every vertex in the mesh description. StaticMeshOperations.h  

static void ComputePolygonTangentsAndNormals ( FMeshDescription& MeshDescription,
float ComparisonThreshold
)

 Set the polygon tangent, normal, binormal and polygonCenter for all polygons in the mesh description. StaticMeshOperations.h  

static FSHAHash ComputeSHAHash ( const FMeshDescription& MeshDescription,
bool bSkipTransientAttributes
)

 Computes the SHA hash of all the attributes values in the MeshDescription. StaticMeshOperations.h  

static void ComputeTangentsAndNormals ( FMeshDescription& MeshDescription,
EComputeNTBsFlags ComputeNTBsOptions
)

 Recompute any invalid normal, tangent or Bi-Normal for every vertex in the mesh description with the given options. StaticMeshOperations.h  

static void ComputeTriangleTangentsAndNormals ( FMeshDescription& MeshDescription,
float ComparisonThreshold,
const TCHAR* DebugName
)

 Set the triangle tangent, normal, binormal and triangleCenter for all triangles in the mesh description. StaticMeshOperations.h  

static void ConvertFromRawMesh ( const FRawMesh& SourceRawMesh,
FMeshDescription& DestinationMeshDescription,
const TMap< int32, FName >& MaterialMap,
bool bSkipNormalsAndTangents,
const TCHAR* DebugName
)

 Convert old FRawMesh format to MeshDescription. StaticMeshOperations.h  

static void ConvertHardEdgesToSmoothGroup ( const FMeshDescription& SourceMeshDescription,
TArray< uint32 >& FaceSmoothingMasks
)

   StaticMeshOperations.h  

static void ConvertSmoothGroupToHardEdges ( const TArray< uint32 >& FaceSmoothingMasks,
FMeshDescription& DestinationMeshDescription
)

   StaticMeshOperations.h  

static void ConvertToRawMesh ( const FMeshDescription& SourceMeshDescription,
FRawMesh& DestinationRawMesh,
const TMap< FName, int32 >& MaterialMap
)

 Convert this mesh description into the old FRawMesh format. StaticMeshOperations.h  

static bool CreateLightMapUVLayout ( FMeshDescription& MeshDescription,
int32 SrcLightmapIndex,
int32 DstLightmapIndex,
int32 MinLightmapResolution,
ELightmapUVVersion LightmapUVVersion,
const FOverlappingCorners& OverlappingCorners
)

 Find and pack UV charts for lightmap. StaticMeshOperations.h  

static void DetermineEdgeHardnessesFromVertexInstanceNormals ( FMeshDescription& MeshDescription,
float Tolerance
)

 Determine the edge hardnesses from existing normals StaticMeshOperations.h  

static void FindOverlappingCorners ( FOverlappingCorners& OverlappingCorners,
const FMeshDescription& MeshDescription,
float ComparisonThreshold
)

 Find all overlapping vertex using the threshold in the mesh description. StaticMeshOperations.h  

static void FlipPolygons ( FMeshDescription& MeshDescription
)

 Flip the facing for a set of input polygons. StaticMeshOperations.h  

static void GenerateBoxUV ( const FMeshDescription& MeshDescription,
const FUVMapParameters& Params,
TMap< FVertexInstanceID, FVector2D >& OutTexCoords
)

 Generate box UV mapping for the MeshDescription StaticMeshOperations.h  

static void GenerateCylindricalUV ( FMeshDescription& MeshDescription,
const FUVMapParameters& Params,
TMap< FVertexInstanceID, FVector2D >& OutTexCoords
)

 Generate cylindrical UV mapping for the MeshDescription StaticMeshOperations.h  

static void GeneratePlanarUV ( const FMeshDescription& MeshDescription,
const FUVMapParameters& Params,
TMap< FVertexInstanceID, FVector2D >& OutTexCoords
)

 Generate planar UV mapping for the MeshDescription StaticMeshOperations.h  

static bool GenerateUniqueUVsForStaticMesh ( const FMeshDescription& MeshDescription,
int32 TextureResolution,
bool bMergeIdenticalMaterials,
TArray< FVector2D >& OutTexCoords
)

 Create some UVs from the specified mesh description data. StaticMeshOperations.h  

static bool GenerateUV ( const FMeshDescription& MeshDescription,
const FGenerateUVOptions& Options,
TArray< FVector2D >& OutTexCoords
)

 Generate UV coordinates from the specified mesh description data. StaticMeshOperations.h  

static int32 GetUniqueVertexCount ( const FMeshDescription& MeshDescription
)

 Return the number of unique vertices, unique vertices are the result of welding all similar vertex instances (position, UV, tangent space, color,...) StaticMeshOperations.h  

static int32 GetUniqueVertexCount ( const FMeshDescription& MeshDescription,
const FOverlappingCorners& OverlappingCorners
)

   StaticMeshOperations.h  

static int32 GetUVChartCount ( FMeshDescription& MeshDescription,
int32 SrcLightmapIndex,
ELightmapUVVersion LightmapUVVersion,
const FOverlappingCorners& OverlappingCorners
)

 Find all charts in the mesh description. StaticMeshOperations.h  

static void HasInvalidVertexInstanceNormalsOrTangents ( const FMeshDescription& MeshDescription,
bool& bHasInvalidNormals,
bool& bHasInvalidTangents
)

 Check the mesh description's vertex instance normals and tangents to see if any of the values are invalid (e.g. nearly zero or they contain a NaN). StaticMeshOperations.h  

static bool HasVertexColor ( const FMeshDescription& MeshDescription
)

   StaticMeshOperations.h  

static bool InsertUVChannel ( FMeshDescription& MeshDescription,
int32 UVChannelIndex
)

 Insert a UV channel at the given index to the MeshDescription. StaticMeshOperations.h  

static void RecomputeNormalsAndTangentsIfNeeded ( FMeshDescription& MeshDescription,
EComputeNTBsFlags ComputeNTBsOptions
)

 Make sure all normals and tangents are valid. If not, recompute them. StaticMeshOperations.h  

static bool RemoveUVChannel ( FMeshDescription& MeshDescription,
int32 UVChannelIndex
)

 Remove the UV channel at the given index from the MeshDescription. StaticMeshOperations.h  

static void ReorderMeshDescriptionPolygonGroups ( const FMeshDescription& SourceMeshDescription,
FMeshDescription& DestinationMeshDescription,
TOptional< const FString > UnmatchMaterialNameWarning,
TOptional< const FString > DestinationPolygonGroupCountDifferFromSource_Msg
)

 Reorder the destination mesh description polygon groups in the same order has the source mesh description polygon groups. StaticMeshOperations.h  

static void SwapPolygonPolygonGroup ( FMeshDescription& MeshDescription,
int32 SectionIndex,
int32 TriangleIndexStart,
int32 TriangleIndexEnd,
bool bRemoveEmptyPolygonGroup
)

 Move some polygon to a new PolygonGroup(section) SectionIndex: The target section we want to assign the polygon. StaticMeshOperations.h  

static bool ValidateAndFixData ( FMeshDescription& MeshDescription,
const FString& DebugName
)

 Verify the mesh data does not contain any NAN or INF float value, if such a case happen the value are set to zero or identity for matrix or quat. StaticMeshOperations.h  

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