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  3. TDynamicVertexAttribute

TDynamicVertexAttribute

[TDynamicVertexAttribute](API\Runtime\GeometryCore\DynamicMesh\TDynamicVertexAttribute) provides per-vertex storage of an attribute value

API > API/Runtime > API/Runtime/GeometryCore > API/Runtime/GeometryCore/DynamicMesh

Inheritance Hierarchy

References

   
Module GeometryCore
Header /Engine/Source/Runtime/GeometryCore/Public/DynamicMesh/DynamicVertexAttribute.h
Include #include "DynamicMesh/DynamicVertexAttribute.h"

Syntax

template<typename AttribValueType, int AttribDimension, typename ParentType>  
class TDynamicVertexAttribute : public UE::Geometry::TDynamicAttributeBase< ParentType >

Remarks

TDynamicVertexAttribute provides per-vertex storage of an attribute value

Variables

  Type Name Description
Protected variable TDynamicVector< AttribValueType > AttribValues List of per-vertex attribute values
Protected variable ParentType * Parent The parent object (e.g. mesh, point set) this attribute belongs to

Constructors

  Type Name Description
Public function   Create an empty overlay
Public function  

TDynamicVertexAttribute ( ParentType* ParentIn,
bool bAutoInit
)

 Create an attribute for the given parent

Destructors

  Type Name Description
Public function Virtual    

Functions

  Type Name Description
Public function void

CompactCopy ( const FCompactMaps& CompactMaps,
const TDynamicVertexAttribute< AttribValueType, AttribDimension, ParentType >& ToCopy
)

  
Public function void

Copy ( const TDynamicVertexAttribute< AttribValueType, AttribDimension, ParentType >& Copy
)

 Set this overlay to contain the same arrays as the copy overlay
Public function void

CopyValue ( int FromVertexID,
int ToVertexID
)

 Copy the attribute value at FromVertexID to ToVertexID
Public function Virtual AttribValueType  
Public function Const const ParentType *  
Public function ParentType *  
Public function Const void

GetValue ( int VertexID,
AsType& Data
)

 Get the element at a given index
Public function Const void

GetValue ( int VertexID,
AttribValueType* Data
)

 Get the element at a given index
Public function void

Initialize ( AttribValueType InitialValue
)

 Initialize the attribute values with InitialValue, and resize to the parent mesh's max vertex ID
Public function Const bool

IsSameAs ( const TDynamicVertexAttribute< AttribValueType, AttribDimension, ParentType >& Other,
bool bIgnoreDataLayout
)

 Returns true if this AttributeSet is the same as Other.
Public function void

ResizeAttribStoreIfNeeded ( int VertexID
)

  
Public function void

Serialize ( FArchive& Ar,
const FCompactMaps* CompactMaps,
bool bUseCompression
)

 Serialize to and from an archive.
Protected function Virtual void

SetAttributeFromBary ( int SetAttribute,
int AttributeA,
int AttributeB,
int AttributeC,
const FVector3d& BaryCoords
)

 Set the value at an Attribute to be a barycentric interpolation of three other Attributes
Protected function Virtual void

SetAttributeFromLerp ( int SetAttribute,
int AttributeA,
int AttributeB,
double Alpha
)

 Set the value at an Attribute to be a linear interpolation of two other Attributes
Public function void

SetNewValue ( int NewVertexID,
const AttribValueType* Data
)

  
Public function void

SetValue ( int VertexID,
const AttribValueType* Data
)

 Set the element at a given index
Public function void

SetValue ( int VertexID,
const AsType& Data
)

 Set the element at a given index

Overridden from TDynamicAttributeBase

  Type Name Description
Public function Virtual Const bool

CheckValidity ( bool bAllowNonmanifold,
EValidityCheckFailMode FailMode
)

 Check validity of attribute
Public function Virtual void

CompactInPlace ( const FCompactMaps& CompactMaps
)

 Compact the attribute in place
Public function Virtual bool

CopyIn ( int RawID,
void* Buffer,
int BufferSize
)

 Generic function to copy data in to an attribute; it's up to the derived class to map RawID to chunks of attribute data
Public function Virtual Const bool

CopyOut ( int RawID,
void* Buffer,
int BufferSize
)

 Generic function to copy data out of an attribute; it's up to the derived class to map RawID to chunks of attribute data
Public function Virtual bool

CopyThroughMapping ( const TDynamicAttributeBase< ParentType >* Source,
const FMeshIndexMappings& Mapping
)

 Accessors/Queries
Public function Virtual Const TDynamicAttributeBase< ParentType > *

MakeCompactCopy ( const FCompactMaps& CompactMaps,
ParentType* ParentIn
)

 Allocate a new compact copy of the attribute layer, optionally with a different parent.
Public function Virtual Const TDynamicAttributeBase< ParentType > *

MakeCopy ( ParentType* ParentIn
)

 Allocate a new copy of the attribute layer, optionally with a different parent
Public function Virtual Const TDynamicAttributeBase< ParentType > *

MakeNew ( ParentType* ParentIn
)

 Allocate a new empty instance of the same type of attribute layer
Public function Virtual Const TUniquePtr< TDynamicAttributeChangeBase< ParentType > >  
Public function Virtual void Update the overlay to reflect an edge collapse in the parent
Public function Virtual void Update the overlay to reflect an edge flip in the parent
Public function Virtual void Update the overlay to reflect an edge merge in the parent
Public function Virtual void Update to reflect a vertex merge that does not resolve as a collapse or edge merge (i.e. a vertex merge that resolves as bowtie creation).
Public function Virtual void

OnNewVertex ( int VertexID,
bool bInserted
)

  
Public function Virtual void Update the overlay to reflect a face poke in the parent
Public function Virtual void Update the overlay to reflect an edge split in the parent
Public function Virtual void

OnSplitVertex ( const FDynamicMesh3::FVertexSplitInfo& SplitInfo,
const TArrayView< const int >& TrianglesToUpdate
)

 Update the overlay to reflect a vertex split in the parent

Typedefs

Name Description
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