Class Edge

Represents an undirected edge of a {PlanarGraph}. An undirected edge in fact simply acts as a central point of reference for two opposite DirectedEdges. Usually a client using a PlanarGraph will subclass Edge to add its own application-specific data and methods.

Inheritance
Object
GraphComponent
Edge
LineMergeEdge
PolygonizeEdge
Inherited Members
Namespace: NetTopologySuite.Planargraph
Assembly: NetTopologySuite.dll
Syntax
public class Edge : GraphComponent

Constructors

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Edge()

Constructs an Edge whose DirectedEdges are not yet set. Be sure to call SetDirectedEdges(DirectedEdge, DirectedEdge).

Declaration
public Edge()
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Edge(DirectedEdge, DirectedEdge)

Constructs an Edge initialized with the given DirectedEdges, and for each DirectedEdge: sets the Edge, sets the symmetric DirectedEdge, and adds this Edge to its from-Node.

Declaration
public Edge(DirectedEdge de0, DirectedEdge de1)
Parameters
Type Name Description
DirectedEdge de0
DirectedEdge de1

Fields

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dirEdge

The two DirectedEdges associated with this Edge.

Declaration
protected DirectedEdge[] dirEdge
Field Value
Type Description
DirectedEdge[]

Properties

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IsRemoved

Tests whether this component has been removed from its containing graph.

Declaration
public override bool IsRemoved { get; }
Property Value
Type Description
Boolean
Overrides

Methods

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GetDirEdge(Node)

Returns the DirectedEdge that starts from the given node, or null if the node is not one of the two nodes associated with this Edge.

Declaration
public DirectedEdge GetDirEdge(Node fromNode)
Parameters
Type Name Description
Node fromNode
Returns
Type Description
DirectedEdge
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GetDirEdge(Int32)

Returns one of the DirectedEdges associated with this Edge.

Declaration
public DirectedEdge GetDirEdge(int i)
Parameters
Type Name Description
Int32 i

0 or 1.
Returns
Type Description
DirectedEdge
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GetOppositeNode(Node)

If node is one of the two nodes associated with this Edge, returns the other node; otherwise returns null.

Declaration
public Node GetOppositeNode(Node node)
Parameters
Type Name Description
Node node
Returns
Type Description
Node
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SetDirectedEdges(DirectedEdge, DirectedEdge)

Initializes this Edge's two DirectedEdges, and for each DirectedEdge: sets the Edge, sets the symmetric DirectedEdge, and adds this Edge to its from-Node.

Declaration
public void SetDirectedEdges(DirectedEdge de0, DirectedEdge de1)
Parameters
Type Name Description
DirectedEdge de0
DirectedEdge de1