1. Epic GamesDeveloper
  3. UNearestNeighborModel

UNearestNeighborModel

The nearest neighbor model.

API > API/Plugins > API/Plugins/NearestNeighborModel

Inheritance Hierarchy

References

   
Module NearestNeighborModel
Header /Engine/Plugins/Animation/MLDeformer/NearestNeighborModel/Source/NearestNeighborModel/Public/NearestNeighborModel.h
Include #include "NearestNeighborModel.h"

Syntax

UCLASS&40;&41;  
class UNearestNeighborModel : public UMLDeformerMorphModel

Remarks

The nearest neighbor model. This model contains the PCA basis of the cloth vertex deltas and a small set of cloth for nearest neighbor search. Given a new pose, the pre-trained neural network first predicts the PCA coefficients of the vertex deltas. Then this model uses the predicted PCA coeffcients to find a nearest neighbor in the small cloth set. The total vertex delta is computed by vertex_delta = mean_delta + pca_basis * pca_coeff + nearest_neighbor_delta To prevent popping, a time filtering is applied on predicted vertex deltas. The vertex delta at time t is computed by vertex_delta(t) = decay_factor * vertex_delta(t-1) + (1 - decay_factor) * vertex_delta The cloth can be separated into several parts (e.g. shirt, pants...). The nearest neighbor search is carried out separately for each part. The pca basis and the nearest neighbor data are compressed into morph targets.

Variables

  Type Name Description
Protected variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite int32 BasisSmoothIter  
Protected variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite int32 BatchSize  
Protected variable UProperty bool bClothPartDataValid  
Protected variable UProperty bool bMorphTargetDataValid  
Protected variable UProperty bool bNearestNeighborDataValid  
Protected variable UProperty Category, EditAnywhere BlueprintReadWrite bool bRecomputeDeltas  
Protected variable UProperty Category, EditAnywhere BlueprintReadWrite bool bRecomputePCA  
Protected variable UProperty Category, EditAnywhere BlueprintReadWrite bool bUseDualQuaternionDeltas  
Protected variable UProperty Category, EditAnywhere BlueprintReadWrite bool bUseFileCache  
Protected variable UProperty Category, EditAnywhere BlueprintReadWrite bool bUseInputMultipliers  
Protected variable UProperty TArray< FClothPartData > ClothPartData  
Protected variable UProperty Category, EditAnywhere BlueprintReadWrite TArray< FClothPartEditorData > ClothPartEditorData  
Protected variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite float DecayFactor  
Protected variable UProperty Category, EditAnywhere BlueprintReadWrite FString FileCacheDirectory  
Protected variable UProperty Category, EditAnywhere BlueprintReadWrite TArray< int32 > HiddenLayerDims  
Protected variable UProperty Category BlueprintReadOnly visibleanywhere int32 InputDim  
Protected variable UProperty Category, EditAnywhere BlueprintReadWrite TArray< FVector3f > InputMultipliers  
Protected variable UProperty Category BlueprintReadWrite TArray< float > InputsMax  
Protected variable UProperty Category BlueprintReadWrite TArray< float > InputsMin  
Protected variable UProperty Category, EditAnywhere BlueprintReadWrite int32 KMeansPartId  
Protected variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite float LearningRate  
Protected variable UProperty Category, Meta BlueprintReadOnly visibleanywhere float MorphDataSize  
Protected variable UProperty Category, EditAnywhere BlueprintReadWrite TArray< FSkeletonCachePair > NearestNeighborData  
Protected variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite float NearestNeighborOffsetWeight  
Protected variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite int32 NumClusters  
Protected variable UProperty Category, EditAnywhere, Meta BlueprintReadWrite int32 NumEpochs  
Protected variable UProperty Category BlueprintReadOnly visibleanywhere int32 OutputDim  
Protected variable UProperty Category, Meta BlueprintReadOnly visibleanywhere float SavedNetworkSize  
Protected variable UProperty Category, EditAnywhere BlueprintReadWrite TArray< TObjectPtr< UAnimSequence > > SourceAnims  

Constructors

  Type Name Description
Public function  

UNearestNeighborModel ( const FObjectInitializer& ObjectInitializer
)

  

Functions

  Type Name Description
Public function Virtual UMLDeformerInputInfo *  
Public function Virtual Const FString  

Overridden from UMLDeformerMorphModel

  Type Name Description
Public function Virtual UMLDeformerModelInstance *  
Public function Virtual Const bool  
Public function Virtual void  

Overridden from UMLDeformerGeomCacheModel

  Type Name Description
Public function Virtual void

Serialize ( FArchive& Archive
)

  

Constants

Name Description
NearestNeighborNumFloatsPerBone  
NearestNeighborNumFloatsPerCurve  

Ask questions and help your peers Developer Forums

Write your own tutorials or read those from others Learning Library

On this page