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  3. FPolygroupSet

FPolygroupSet

Polygroup sets can be stored in multiple places.

API > API/Plugins > API/Plugins/DynamicMesh > API/Plugins/DynamicMesh/Polygroups

References

   
Module DynamicMesh
Header /Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/Polygroups/PolygroupSet.h
Include #include "Polygroups/PolygroupSet.h"

Syntax

struct FPolygroupSet

Remarks

Polygroup sets can be stored in multiple places. The default location is in the per-triangle group integer stored directly on a FDynamicMesh3. Additional layers may be stored in the FDynamicMeshAttributeSet. Future iterations could store packed polygroups in other places, store them in separate arrays, and so on. FPolygroupSet can be used to abstract these different cases, by providing a standard Polygroup Get/Set API.

To support unique Polygroup ID allocation, FPolygroupSet calculates the maximum GroupID on creation, and updates this maximum across SetGroup() calls. AllocateNewGroupID() can be used to provide new unused GroupIDs. For consistency with FDynamicMesh3, MaxGroupID is set such that all GroupIDs are less than MaxGroupID

Variables

  Type Name Description
Public variable int32 GroupLayerIndex  
Public variable int32 MaxGroupID  
Public variable const FDynamicMesh3 * Mesh  
Public variable const FDynamicMeshPolygroupAttribute * PolygroupAttrib  

Constructors

  Type Name Description
Public function  

FPolygroupSet ( const FDynamicMesh3* MeshIn
)

 Initialize a PolygroupSet for the given Mesh, and standard triangle group layer
Public function  

FPolygroupSet ( const FPolygroupSet* CopyIn
)

 Initialize a PolygroupSet by copying an existing PolygroupSet
Public function  

FPolygroupSet ( const FDynamicMesh3* MeshIn,
FPolygroupLayer GroupLayer
)

 Initialize a PolygroupSet for the given Mesh, and standard triangle group layer
Public function  

FPolygroupSet ( const FDynamicMesh3* MeshIn,
const FDynamicMeshPolygroupAttribute* PolygroupAttribIn
)

 Initialize a PolygroupSet for given Mesh and specific Polygroup attribute layer
Public function  

FPolygroupSet ( const FDynamicMesh3* MeshIn,
int32 PolygroupLayerIndex
)

 Initialize a PolygroupSet for given Mesh and specific Polygroup attribute layer, found by index.
Public function  

FPolygroupSet ( const FDynamicMesh3* MeshIn,
FName AttribName
)

 Initialize a PolygroupSet for given Mesh and specific Polygroup attribute layer, found by name.

Functions

  Type Name Description
Public function int32 Allocate a new unused PolygroupID by incrementing the MaxGroupID member
Public function Const int32

GetGroup ( int32 TriangleID
)

  
Public function const FDynamicMesh3 *

GetMesh ()

  
Public function const FDynamicMeshPolygroupAttribute *  
Public function Const int32  
Public function Const int32

GetTriangleGroup ( int32 TriangleID
)

  
Public function void Calculate the current maximum PolygroupID used in the active set and store in MaxGroupID member
Public function void

SetGroup ( int32 TriangleID,
int32 NewGroupID,
FDynamicMesh3& WritableMesh
)

 Set the PolygroupID for a TriangleID

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