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  3. TDynamicMeshTriangleAttribute

TDynamicMeshTriangleAttribute

[TDynamicMeshTriangleAttribute](API\Runtime\GeometryCore\DynamicMesh\TDynamicMeshTriangleAttribute) is an add-on to a [FDynamicMesh3](API\Runtime\GeometryCore\DynamicMesh\FDynamicMesh3) that allows for per-triangle 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/DynamicMeshTriangleAttribute.h
Include #include "DynamicMesh/DynamicMeshTriangleAttribute.h"

Syntax

template<typename AttribValueType, int AttribDimension>  
class TDynamicMeshTriangleAttribute : public UE::Geometry::TDynamicAttributeBase< FDynamicMesh3 >

Remarks

TDynamicMeshTriangleAttribute is an add-on to a FDynamicMesh3 that allows for per-triangle storage of an attribute value.

The FDynamicMesh3 mesh topology operations (eg split/flip/collapse edge, poke face, etc) can be mirrored to the overlay via OnSplitEdge(), etc.

Variables

  Type Name Description
Protected variable TDynamicVector< AttribValueType > AttribValues List of per-triangle attribute values
Protected variable FDynamicMesh3 * ParentMesh The parent mesh this overlay belongs to

Constructors

  Type Name Description
Public function   Create an empty overlay
Public function  

TDynamicMeshTriangleAttribute ( FDynamicMesh3* ParentMeshIn,
bool bAutoInit
)

 Create an overlay for the given parent mesh

Functions

  Type Name Description
Public function void

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

  
Public function void

Copy ( const TDynamicMeshTriangleAttribute< AttribValueType, AttribDimension >& Copy
)

 Set this overlay to contain the same arrays as the copy overlay
Public function Virtual bool Accessors/Queries
Public function void

CopyValue ( int FromTriangleID,
int ToTriangleID
)

 Copy the attribute value at FromTriangleID to ToTriangleID
Public function Virtual AttribValueType  
Public function FDynamicMesh3 *  
Public function Const const FDynamicMesh3 *  
Public function Const void

GetValue ( int TriangleID,
AsType& Data
)

 Get the element at a given index
Public function Const void

GetValue ( int TriangleID,
AttribValueType* Data
)

 Get the element at a given index
Public function void

Initialize ( AttribValueType InitialValue
)

 Initialize the attribute values to the given max triangle ID
Public function Const bool

IsBorderEdge ( int EdgeID,
bool bMeshBoundaryIsBorder
)

 Returns true if the parent-mesh edge is a "Seam" in this overlay
Public function Const bool

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

 Returns true if this AttributeSet is the same as Other.
Public function Virtual Const FDynamicMeshAttributeBase *

MakeCompactCopy ( const FCompactMaps& CompactMaps,
FDynamicMesh3* ParentMeshIn
)

  
Public function Virtual Const FDynamicMeshAttributeBase *

MakeCopy ( FDynamicMesh3* ParentMeshIn
)

  
Public function Virtual Const FDynamicMeshAttributeBase *

MakeNew ( FDynamicMesh3* ParentMeshIn
)

  
Public function void

ResizeAttribStoreIfNeeded ( int TriangleID
)

  
Public function void

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

 Serialize to and from an archive.
Public function void

SetNewValue ( int NewTriangleID,
const AttribValueType* Data
)

  
Public function void

SetValue ( int TriangleID,
const AttribValueType* Data
)

 Set the element at a given index
Public function void

SetValue ( int TriangleID,
const AsType& Data
)

 Set the element at a given index

Overridden from TDynamicAttributeBase

  Type Name Description
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 Const TUniquePtr< FDynamicMeshAttributeChangeBase >  
Public function Virtual void Update the overlay to reflect an edge collapse in the parent mesh
Public function Virtual void Update the overlay to reflect an edge flip in the parent mesh
Public function Virtual void Update the overlay to reflect an edge merge in the parent mesh
Public function Virtual void

OnNewTriangle ( int TriangleID,
bool bInserted
)

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

OnSplitVertex ( const DynamicMeshInfo::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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