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> Unreal Engine API Reference > Runtime > MeshDescription > FMeshAttributeArraySetBase

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FMeshAttributeArraySetBase

This is the base class for an attribute array set.

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Inheritance Hierarchy

FMeshAttributeArraySetBase

TMeshAttributeArraySet

TAttributeIndicesArray

References

Module	MeshDescription
Header	/Engine/Source/Runtime/MeshDescription/Public/MeshAttributeArray.h
Include	#include "MeshAttributeArray.h"

Syntax

class FMeshAttributeArraySetBase

Remarks

This is the base class for an attribute array set. An attribute array set is a container which holds attribute arrays, one per attribute index. Many attributes have only one index, while others (such as texture coordinates) may want to define many.

All attribute array set instances will be of derived types; this type exists for polymorphism purposes, so that they can be managed by a generic TUniquePtr<FMeshAttributeArraySetBase>.

In general, we avoid accessing them via virtual dispatch by insisting that their type be passed as a template parameter in the accessor. This can be checked against the Type field to ensure that we are accessing an instance by its correct type.

Variables

	Name	Description
EMeshAttributeF...	Flags	Implementation-defined attribute name flags
int32	NumElements	Number of elements in each index
uint32	Type	Type of the attribute array (based on the tuple element index from AttributeTypes)

Constructors

	Name	Description
	FMeshAttributeArraySetBase ( const uint32 InType, const EMeshAttributeFlags InFlags, const int32 InNumberOfElements )	Constructor

Destructors

	Name	Description
	~FMeshAttributeArraySetBase()	Virtual interface

Functions

	Name	Description
TUniquePtr< ...	Clone()
EMeshAttribu...	GetFlags()	Get the flags for this attribute array set
uint32	GetHash()
int32	GetNumElements()	Return number of elements each attribute index has
int32	GetNumIndices()
uint32	GetType()	Get the type index of this attribute array set
bool	HasType()	Determine whether this attribute array set is of the given type
void	Initialize ( const int32 Count )
void	Insert ( const int32 Index )
void	InsertIndex ( const int32 Index )
void	Remap ( const TSparseArray< int32 >& Index... )
void	Remove ( const int32 Index )
void	RemoveIndex ( const int32 Index )
void	Serialize ( FArchive& Ar )
void	SetFlags ( const EMeshAttributeFlags InFlags )	Set the flags for this attribute array set
void	SetNumIndices ( const int32 NumIndices )

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