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FEdgeSpan

Sequential lists of vertices/edges in a mesh that is _not_ closed.

API > API/Runtime > API/Runtime/GeometryCore

Sequential lists of vertices/edges in a mesh that is not closed. If the list is closed it should be an FEdgeLoop

   
Name FEdgeSpan
Type class
Header File /Engine/Source/Runtime/GeometryCore/Public/EdgeSpan.h
Include Path #include "EdgeSpan.h"

Syntax

class FEdgeSpan

Constructors

Name Remarks Include Path Unreal Specifiers

FEdgeSpan ( const FDynamicMesh3* mesh,
const TArray< int >& vertices,
const TArray< int >& edges
)

 Initialize EdgeSpan with the given vertices and edges EdgeSpan.h  

FEdgeSpan ( const FDynamicMesh3* mesh
)

   EdgeSpan.h  
  EdgeSpan.h  

Variables

Public

Name Type Remarks Include Path Unreal Specifiers
bBowtiesCalculated bool If true, then BowtieVertices list is valid EdgeSpan.h  
BowtieVertices TArray< int > List of bowtie vertices. This list is only valid if bBowtiesCalculated = true. EdgeSpan.h  
Edges TArray< int > Ordered list of edges forming the EdgeSpan EdgeSpan.h  
Mesh const FDynamicMesh3 * The Mesh that contains this EdgeSpan EdgeSpan.h  
Vertices TArray< int > Ordered list of vertices forming the EdgeSpan EdgeSpan.h  

Functions

Public

Name Remarks Include Path Unreal Specifiers

void CalculateBowtieVertices()

 Populate the BowtieVertices member EdgeSpan.h  

bool CheckValidity ( EValidityCheckFailMode FailMode
) const

 Exhaustively check that verts and edges of this EdgeSpan are consistent. This is quite expensive. EdgeSpan.h  

int FindNearestVertexIndex ( const FVector3d& QueryPoint
) const

   EdgeSpan.h  

int FindVertexIndex ( int VertexID
) const

   EdgeSpan.h  

FAxisAlignedBox3d GetBounds()

   EdgeSpan.h  

int GetEdgeCount()

   EdgeSpan.h  

void GetPolyline ( FPolyline3d& PolylineOut
) const

 Extract Polyline from Mesh based on vertex list EdgeSpan.h  

void GetSubspansByAngle ( double AngleThresholdDeg,
int32 MinSpanSize,
TArray< FEdgeSpan >& OutSpans
) const

 Split a single EdgeSpan into multiple subspans based on an edge angle threshold. EdgeSpan.h  

FVector3d GetVertex ( int SpanIndex
) const

   EdgeSpan.h  

int GetVertexCount()

   EdgeSpan.h  

void Initialize ( const FDynamicMesh3* mesh,
const TArray< int >& vertices,
const TArray< int >& edges,
const TArray< int >* BowtieVerticesIn
)

 Initialize the loop data EdgeSpan.h  

void InitializeFromEdges ( const FDynamicMesh3* MeshIn,
const TArray< int >& EdgesIn
)

 Construct an FEdgeSpan from a list of edges of the mesh EdgeSpan.h  

void InitializeFromEdges ( const TArray< int >& EdgesIn
)

 Construct an FEdgeSpan from a list of edges of the mesh EdgeSpan.h  

bool InitializeFromVertices ( const FDynamicMesh3* MeshIn,
const TArray< int >& VerticesIn,
bool bAutoOrient
)

 Construct EdgeSpan from list of vertices of mesh EdgeSpan.h  

bool InitializeFromVertices ( const TArray< int >& VerticesIn,
bool bAutoOrient
)

 Construct EdgeSpan from list of vertices of mesh EdgeSpan.h  

bool IsBoundaryspan ( const FDynamicMesh3* TestMesh
) const

   EdgeSpan.h  

bool IsInternalspan()

   EdgeSpan.h  

void Reverse()

 Reverse order of vertices and edges in span EdgeSpan.h  

void SetBowtieVertices ( const TArray< int >& Bowties
)

 Set the bowtie vertices EdgeSpan.h  

bool SetCorrectOrientation()

 If any edges if the span are on a mesh boundary, we can check that the span is oriented such that it corresponds with the boundary edges, and if not, reverse it. EdgeSpan.h  

Static

Name Remarks Include Path Unreal Specifiers

static void VertexSpanToEdgeSpan ( const FDynamicMesh3* Mesh,
const TArray< int >& VertexSpan,
TArray< int >& OutEdgeSpan
)

 Utility function to convert a vertex span to an edge span EdgeSpan.h  

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