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FMeshConnectedComponents

[FMeshConnectedComponents](API\Runtime\GeometryCore\FMeshConnectedComponents) calculates Connected Components of a Mesh, or sub-regions of a Mesh.

API > API/Runtime > API/Runtime/GeometryCore

FMeshConnectedComponents calculates Connected Components of a Mesh, or sub-regions of a Mesh. By default the actual mesh connectivity is used, but an optional connectivity predicate can be provided to specify when two elements should be considered connected.

   
Name FMeshConnectedComponents
Type class
Header File /Engine/Source/Runtime/GeometryCore/Public/Selections/MeshConnectedComponents.h
Include Path #include "Selections/MeshConnectedComponents.h"

Syntax

class FMeshConnectedComponents

Constructors

Name Remarks Include Path Unreal Specifiers

FMeshConnectedComponents ( const FDynamicMesh3* MeshIn
)

   Selections/MeshConnectedComponents.h  

Structs

Name Remarks
FComponent Connected Component found by one of the calculation functions

Variables

Public

Name Type Remarks Include Path Unreal Specifiers
Components TIndirectArray< FComponent > List of Connected Components that have been found by one of the calculation functions Selections/MeshConnectedComponents.h  
Mesh const FDynamicMesh3 *   Selections/MeshConnectedComponents.h  

Functions

Public

Name Remarks Include Path Unreal Specifiers

auto begin ()

   Selections/MeshConnectedComponents.h  

auto begin ()

 DO NOT USE DIRECTLY STL-like iterators to enable ranged-based for loop support (forwarding TIndirectArray declarations) Selections/MeshConnectedComponents.h  

auto end ()

   Selections/MeshConnectedComponents.h  

auto end ()

   Selections/MeshConnectedComponents.h  

void FindConnectedTriangles ( TFunctionRef< bool(int)> IndexFilterFunc,
TFunction< bool(int32, int32)> TrisConnectedPredicate
)

 Find all connected triangle components of a subset of triangles of the Mesh and store in Components array. Selections/MeshConnectedComponents.h  

void FindConnectedTriangles ( const TArray< int >& TriangleROI,
TFunction< bool(int32, int32)> TrisConnectedPredicate
)

 Find all connected triangle components of a subset of triangles of the Mesh and store in Components array. Selections/MeshConnectedComponents.h  

void FindConnectedTriangles ( TFunction< bool(int32, int32)> TrisConnectedPredicate
)

 Calculation functions. Selections/MeshConnectedComponents.h  

void FindConnectedVertices ( TFunctionRef< bool(int)> IndexFilterFunc,
TFunction< bool(int32, int32)> VertsConnectedPredicate
)

 Find all connected vertex components of a subset of vertices of the Mesh and store in Components array. Selections/MeshConnectedComponents.h  

void FindConnectedVertices ( const TArray< int >& VertexROI,
TFunction< bool(int32, int32)> VertsConnectedPredicate
)

 Find all connected vertex components of a subset of vertices of the Mesh and store in Components array. Selections/MeshConnectedComponents.h  

void FindConnectedVertices ( TFunction< bool(int32, int32)> VertsConnectedPredicate
)

 Find all connected vertex components of the Mesh and store in Components array. Selections/MeshConnectedComponents.h  

void FindTrianglesConnectedToSeeds ( const TArray< int >& SeedTriangles,
TFunction< bool(int32, int32)> TrisConnectedPredicate
)

 Find all connected triangle components that contain one or more Seed Triangles and store in Components array. Selections/MeshConnectedComponents.h  

void FindVerticesConnectedToSeeds ( const TArray< int >& SeedVertices,
TFunction< bool(int32, int32)> VertsConnectedPredicate
)

 Find all connected vertex components that contain one or more Seed Vertices and store in Components array. Selections/MeshConnectedComponents.h  

const FComponent & GetComponent ( int32 Index
) const

   Selections/MeshConnectedComponents.h  

FComponent & GetComponent ( int32 Index
)

   Selections/MeshConnectedComponents.h  

int32 GetLargestIndexByCount()

   Selections/MeshConnectedComponents.h  

bool InitializeFromTriangleComponents ( const TArray< TArray< int32 > >& ComponentLists,
bool bValidateIDs
)

 Initialize the internal FComponent list from the input ComponentLists, skipping any empty input lists Selections/MeshConnectedComponents.h  

bool InitializeFromTriangleComponents ( TArray< TArray< int32 > >& ComponentLists,
bool bMoveSubLists,
bool bValidateIDs
)

 Initialize the internal FComponent list from the input ComponentLists, skipping any empty input lists Selections/MeshConnectedComponents.h  

bool InitializeFromVertexComponents ( TArray< TArray< int32 > >& ComponentLists,
bool bMoveSubLists,
bool bValidateIDs
)

 Initialize the internal FComponent list from the input ComponentLists, skipping any empty input lists Selections/MeshConnectedComponents.h  

bool InitializeFromVertexComponents ( const TArray< TArray< int32 > >& ComponentLists,
bool bValidateIDs
)

 Initialize the internal FComponent list from the input ComponentLists, skipping any empty input lists Selections/MeshConnectedComponents.h  

int32 Num()

 Query functions. Only valid to call after a Calculation function has been called. Selections/MeshConnectedComponents.h  

void SortByCount ( bool bLargestFirst
)

 Sort the Components array by component element count Selections/MeshConnectedComponents.h  

Protected

Name Remarks Include Path Unreal Specifiers

void FindTriComponent ( FComponent* Component,
TArray< int32 >& ComponentQueue,
TArray< uint8 >& ActiveSet,
TFunctionRef< bool(int32, int32)> TriConnectedPredicate
)

   Selections/MeshConnectedComponents.h  

void FindTriComponent ( FComponent* Component,
TArray< int32 >& ComponentQueue,
TArray< uint8 >& ActiveSet
)

   Selections/MeshConnectedComponents.h  

void FindTriComponents ( FInterval1i ActiveRange,
TArray< uint8 >& ActiveSet,
TFunction< bool(int32, int32)> TriConnectedPredicate
)

 Internal functions to calculate ROI Selections/MeshConnectedComponents.h  

void FindTriComponents ( const TArray< int32 >& SeedList,
TArray< uint8 >& ActiveSet,
TFunction< bool(int32, int32)> TriConnectedPredicate
)

   Selections/MeshConnectedComponents.h  

void FindVertComponent ( FComponent* Component,
TArray< int32 >& ComponentQueue,
TArray< uint8 >& ActiveSet,
TFunctionRef< bool(int32, int32)> VertsConnectedPredicate
)

   Selections/MeshConnectedComponents.h  

void FindVertComponent ( FComponent* Component,
TArray< int32 >& ComponentQueue,
TArray< uint8 >& ActiveSet
)

   Selections/MeshConnectedComponents.h  

void FindVertComponents ( FInterval1i ActiveRange,
TArray< uint8 >& ActiveSet,
TFunction< bool(int32, int32)> VertsConnectedPredicate
)

   Selections/MeshConnectedComponents.h  

void FindVertComponents ( const TArray< int32 >& SeedList,
TArray< uint8 >& ActiveSet,
TFunction< bool(int32, int32)> VertsConnectedPredicate
)

   Selections/MeshConnectedComponents.h  

void RemoveFromActiveSet ( const FComponent* Component,
TArray< uint8 >& ActiveSet
)

   Selections/MeshConnectedComponents.h  

Static

Name Remarks Include Path Unreal Specifiers

static void GrowToConnectedEdges ( const FDynamicMesh3& Mesh,
const TArray< int >& InputROI,
TSet< int >& ResultROI,
TArray< int32 >* QueueBuffer,
TFunctionRef< bool(int32, int32)> CanGrowPredicate
)

 Utility function to expand an edge selection to all edges considered "connected". Selections/MeshConnectedComponents.h  

static void GrowToConnectedTriangles ( const FDynamicMesh3* Mesh,
const TArray< int >& InputROI,
TSet< int >& ResultROI,
TArray< int32 >* QueueBuffer,
TFunctionRef< bool(int32, int32)> CanGrowPredicate
)

 Utility function to expand a triangle selection to all triangles considered "connected". Selections/MeshConnectedComponents.h  

static void GrowToConnectedTriangles ( const FDynamicMesh3* Mesh,
const TArray< int >& InputROI,
TArray< int >& ResultROI,
TArray< int32 >* QueueBuffer,
TSet< int32 >* DoneBuffer,
TFunctionRef< bool(int32, int32)> CanGrowPredicate
)

 Utility function to expand a triangle selection to all triangles considered "connected". Selections/MeshConnectedComponents.h  

static void GrowToConnectedVertices ( const FDynamicMesh3& Mesh,
const TArray< int >& InputROI,
TSet< int >& ResultROI,
TArray< int32 >* QueueBuffer,
TFunctionRef< bool(int32, int32)> CanGrowPredicate
)

 Utility function to expand a vertex selection to all vertices considered "connected". Selections/MeshConnectedComponents.h  

Operators

Name Remarks Include Path Unreal Specifiers

FComponent & operator[] ( int32 Index
)

   Selections/MeshConnectedComponents.h  

const FComponent & operator[] ( int32 Index
) const

   Selections/MeshConnectedComponents.h  

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