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  3. FEdgeSpan

FEdgeSpan

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

API > API/Runtime > API/Runtime/GeometryCore

References

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

Syntax

class FEdgeSpan

Remarks

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

Variables

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

Constructors

  Type Name Description
Public function    
Public function  

FEdgeSpan ( const FDynamicMesh3* mesh
)

  
Public function  

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

 Initialize EdgeSpan with the given vertices and edges

Functions

  Type Name Description
Public function void Populate the BowtieVertices member
Public function Const bool Exhaustively check that verts and edges of this EdgeSpan are consistent. This is quite expensive.
Public function Const int

FindNearestVertexIndex ( const FVector3d& QueryPoint
)

  
Public function Const int

FindVertexIndex ( int VertexID
)

  
Public function Const FAxisAlignedBox3d  
Public function Const int  
Public function Const void

GetPolyline ( FPolyline3d& PolylineOut
)

 Extract Polyline from Mesh based on vertex list
Public function Const FVector3d

GetVertex ( int SpanIndex
)

  
Public function Const int  
Public function void

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

 Initialize the loop data
Public function void

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

 Construct an FEdgeSpan from a list of edges of the mesh
Public function void

InitializeFromEdges ( const TArray< int >& EdgesIn
)

 Construct an FEdgeSpan from a list of edges of the mesh
Public function bool

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

 Construct EdgeSpan from list of vertices of mesh
Public function bool

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

 Construct EdgeSpan from list of vertices of mesh
Public function Const bool

IsBoundaryspan ( const FDynamicMesh3* TestMesh
)

  
Public function Const bool  
Public function void

Reverse ()

 Reverse order of vertices and edges in span
Public function void

SetBowtieVertices ( const TArray< int >& Bowties
)

 Set the bowtie vertices
Public function bool 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.
Public function Static void

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

 Utility function to convert a vertex span to an edge span

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