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  3. USkelMeshDNAUtils

USkelMeshDNAUtils

A utility class for updating SkeletalMesh joints, base mesh, morph targets and skin weights according to DNA data.

API > API/Plugins > API/Plugins/RigLogicModule

A utility class for updating SkeletalMesh joints, base mesh, morph targets and skin weights according to DNA data. After the update, the render data is re-chunked.

   
Name USkelMeshDNAUtils
Type class
Header File /Engine/Plugins/Animation/RigLogic/Source/RigLogicModule/Public/SkelMeshDNAUtils.h
Include Path #include "SkelMeshDNAUtils.h"

Syntax

UCLASS (MinimalAPI, Transient)  
class USkelMeshDNAUtils : public UObject

Inheritance Hierarchy

Constructors

Name Remarks Include Path Unreal Specifiers

USkelMeshDNAUtils ( const FObjectInitializer& ObjectInitializer
)

   SkelMeshDNAUtils.h  

Functions

Public

Static

Name Remarks Include Path Unreal Specifiers

static FVector ConvertDNAVertexToUE4CoordSystem ( FVector InVertexPositionInDNA
)

 Converts DNA vertex coordinates to UE4 coordinate system SkelMeshDNAUtils.h  

static FVector ConvertUE4CoordSystemToDNAVertex ( FVector InVertexPositionInUE4
)

 Converts UE4 coordinate system to DNA vertex coordinates SkelMeshDNAUtils.h  
Prepare context object that will allow mapping of DNA structures extracted from DNAAsset to SkelMesh ones for updating SkelMeshDNAUtils.h  
Prepare context object that will allow mapping of DNA structures to SkelMesh ones for updating SkelMeshDNAUtils.h  

static void GetLODRange ( ELodUpdateOption InUpdateOption,
const int32& InLODNum,
int32& OutLODStart,
int32& OutLODRangeSize
)

   SkelMeshDNAUtils.h  

static UDNAAsset * GetMeshDNA ( USkeletalMesh* InSkelMesh
)

 Gets the DNA asset embedded in the mesh SkelMeshDNAUtils.h  

static void RebuildRenderData ( USkeletalMesh* InSkelMesh
)

 Rechunks the mesh after the updateRebuilds render data from LODModel and inits resources. SkelMeshDNAUtils.h  

static void RebuildRenderData_VertexPosition ( USkeletalMesh* InSkelMesh,
bool InRebuildTangents
)

 Re-initialize vertex positions for rendering after the update, and optionally tangents SkelMeshDNAUtils.h  

static void UpdateBaseMesh ( USkeletalMesh* InSkelMesh,
IDNAReader* InDNAReader,
FDNAToSkelMeshMap* InDNAToSkelMeshMap,
ELodUpdateOption InUpdateOption
)

 Updates the base mesh vertex positions for all mesh sections of all LODs, using the data from DNA file NOTE: Not calling RebuildRenderData automatically, it needs to be called explicitly after the first update As the topology doesn't change, for subsequent updates it can be ommited to gain performance SkelMeshDNAUtils.h  

static void UpdateJointBehavior ( USkeletalMeshComponent* InSkelMeshComponent
)

 Update joint behavior NOTE: DNAAsset->SetBehaviorReader needs to be called before this SkelMeshDNAUtils.h  

static void UpdateJoints ( USkeletalMesh* InSkelMesh,
IDNAReader* InDNAReader,
FDNAToSkelMeshMap* InDNAToSkelMeshMap
)

 Updates the positions, orientation and scale in the joint hierarchy using the data from DNA file SkelMeshDNAUtils.h  

static void UpdateMorphTargets ( USkeletalMesh* InSkelMesh,
IDNAReader* InDNAReader,
FDNAToSkelMeshMap* InDNAToSkelMeshMap,
ELodUpdateOption InUpdateOption
)

 Updates the morph targets for all mesh sections of LODs, using the data from DNA file SkelMeshDNAUtils.h  

static void UpdateSkinWeights ( USkeletalMesh* InSkelMesh,
IDNAReader* InDNAReader,
FDNAToSkelMeshMap* InDNAToSkelMeshMap,
ELodUpdateOption InUpdateOption
)

 Updates the skin weights for all LODs using the data from DNA file SkelMeshDNAUtils.h  

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