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  3. FStaticMeshOperations

FStaticMeshOperations

API > API/Runtime > API/Runtime/StaticMeshDescription

Inheritance Hierarchy

References

   
Module StaticMeshDescription
Header /Engine/Source/Runtime/StaticMeshDescription/Public/StaticMeshOperations.h
Include #include "StaticMeshOperations.h"

Syntax

class FStaticMeshOperations

Functions

  Type Name Description
Public function Static bool

AddUVChannel ( FMeshDescription& MeshDescription
)

 Add a UV channel to the MeshDescription.
Public function Static void

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

  
Public function Static void

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

  
Public function Static void

ApplyTransform ( FMeshDescription& MeshDescription,
const FMatrix& Transform
)

 Transforms the MeshDescription data using the provided transform.
Public function Static void

ApplyTransform ( FMeshDescription& MeshDescription,
const FTransform& Transform
)

 Transforms the MeshDescription data using the provided transform.
Public function Static void

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

  
Public function Static void

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

  
Public function Static void

ComputeMikktTangents ( FMeshDescription& MeshDescription,
bool bIgnoreDegenerateTriangles
)

 Compute tangent and Bi-Normal using mikkt space for every vertex in the mesh description.
Public function Static FSHAHash

ComputeSHAHash ( const FMeshDescription& MeshDescription,
bool bSkipTransientAttributes
)

 Computes the SHA hash of all the attributes values in the MeshDescription.
Public function 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.
Public function 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.
Public function Static void

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

 Convert old FRawMesh format to MeshDescription.
Public function Static void

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

  
Public function Static void

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

  
Public function Static void

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

 Convert this mesh description into the old FRawMesh format.
Public function Static bool

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

 Find and pack UV charts for lightmap.
Public function Static void Determine the edge hardnesses from existing normals
Public function Static void

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

 Find all overlapping vertex using the threshold in the mesh description.
Public function Static void

FlipPolygons ( FMeshDescription& MeshDescription
)

 Flip the facing for a set of input polygons.
Public function Static void

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

 Generate box UV mapping for the MeshDescription
Public function Static void

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

 Generate cylindrical UV mapping for the MeshDescription
Public function Static void

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

 Generate planar UV mapping for the MeshDescription
Public function Static bool

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

 Create some UVs from the specified mesh description data.
Public function 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,...)
Public function Static int32

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

 Return the number of unique vertices, unique vertices are the result of welding all similar vertex instances (position, UV, tangent space, color,...)
Public function Static int32

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

 Find all charts in the mesh description.
Public function Static bool

HasVertexColor ( const FMeshDescription& MeshDescription
)

  
Public function Static bool

InsertUVChannel ( FMeshDescription& MeshDescription,
int32 UVChannelIndex
)

 Insert a UV channel at the given index to the MeshDescription.
Public function Static void

RecomputeNormalsAndTangentsIfNeeded ( FMeshDescription& MeshDescription,
EComputeNTBsFlags ComputeNTBsOptions
)

 Make sure all normals and tangents are valid. If not, recompute them.
Public function Static bool

RemoveUVChannel ( FMeshDescription& MeshDescription,
int32 UVChannelIndex
)

 Remove the UV channel at the given index from the MeshDescription.
Public function 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.
Public function 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.

Classes

  Type Name Description
Public struct FAppendSettings    

Deprecated Functions

  Type Name Description
Public function Static void

ComputePolygonTangentsAndNormals ( FMeshDescription& MeshDescription,
float ComparisonThreshold
)

 Please use ComputeTriangleTangentsAndNormals() instead.

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